WO2016101860A1 - Infusion flowing speed adjuster - Google Patents

Abstract

An infusion flowing speed adjuster guides a liquid by using a fixed base (1) or the fixed base (1) and an adjusting rod (2). The adjusting rod (2) is moved along an adjusting rod channel to adjust a cross-sectional area of a liquid flow channel for infusion at a speed adjustment location, so as to change an infusion flowing speed in an infusion apparatus. The adjusting rod channel inside the fixed base (1) is used to implement fixation of the adjusting rod (2), so as to achieve more desirable positioning after setting of a flowing speed is completed, so that a flowing speed does not drift, an operation process is simple, and control of a flowing speed is more precise. The adjuster meets current clinical use habits and multiple application environments, ensures infusion safety, and is applicable to normal infusion. When the adjuster is applied to infusion of a high-viscosity or high-precipitation liquid such as a blood product, vein nutrition, and manna sugar, a clogging probability can be further reduced, and the adjuster is used in the field of medical instruments.

Description

Infusion flow rate regulator Technical field

The present invention relates to the field of medical devices, and in particular to an infusion flow rate regulator.

Background technique

Infusion therapy is an important clinical treatment. Infusion therapy is applied to infusion sets or infusion pumps of various types of infusion regulators for different occasions.

The basic principle of the conventional infusion regulator is basically the same. Basically, a pulley is arranged outside the infusion catheter, and the infusion catheter is mainly squeezed by a pulley to change its shape, thereby changing the cross-sectional area of the liquid flow channel, that is, The cross-sectional area of the infusion catheter flow channel is varied to adjust the infusion flow rate.

The ordinary infusion regulator can be operated with one hand, which can realize the stepless adjustment of the infusion flow rate. However, since the infusion catheter is a flexible and smooth surface hose, the pulley will be moved from the set position or even pushed away during the infusion process. Completely slipping, the infusion flow rate is out of control, and the infusion flow rate exceeding the predetermined speed clinically causes serious medical accidents such as heart failure and death, which poses a major safety hazard. Clinically, by increasing the number of nursing staff inspections and proofreading times, the infusion flow rate drift can be found and corrected in time to avoid the hazards of the above situation, but the method significantly increases the workload of the nursing staff.

At the same time, because the infusion catheter has elasticity and the infusion catheter will be deformed after being squeezed for a long time, it cannot be restored to its original state. In clinical practice, the cross-sectional area of the infusion conduit is not predictable, so that the operator cannot follow the pulley. Position to determine the cross-sectional area of the infusion catheter after the infusion catheter is squeezed, and thus can not determine the infusion flow rate, each adjustment The operator needs to cooperate with the timer for multiple times to achieve the expected value, which is time-consuming and labor-intensive and does not have a large error, increasing the workload of the nursing staff, especially when the clinical infusion workload is large, increasing the waiting time of the patient, delaying treatment. The adjustment of the flow depends more on the operator's experience than on the flow regulator itself, which cannot be applied when precise control of the infusion flow rate is required.

The conventional conventional flow setting type infusion set adopts a liquid flow channel whose preset cross-sectional area continuously changes and has a fixed shape, and the fixed base liquid outlet communicates with the fixed base liquid inlet through the liquid flow channel, and the liquid is fixed through the fixed base. The cross-sectional area of the corresponding liquid flow channel between the mouth and the fixed base outlet port is different, and the purpose of adjusting the infusion flow rate is achieved.

The flow setting type infusion regulator can realize the stepless adjustment of the infusion flow rate, which can solve the infusion flow rate drift, but the process is complicated, requires two-hand operation, and the production cost is high, and the flow rate scale is a circular curved surface design, which needs manual rotation to observe the flow rate. Scale, it is not convenient for nurses to inspect the infusion. When infusion of high viscosity or high-precipitation liquid such as blood products, intravenous nutrition, mannitol, etc., the cross-sectional area of the predetermined liquid flow channel is small and the stroke is long, and it is easy to block, so it is difficult to popularize clinically.

In clinical practice, the volume of a single drop of different liquids will vary, generally between 0.043 and 0.05 ml, and special drugs will exceed this range. The existing flow setting regulator can not meet the change of the single drop volume of the liquid medicine. Therefore, when the clinical infusion is performed, it is more accurate to operate according to the "drip". The clinical in general is to refer to the infusion flow rate of the single drop volume of the different medical liquids by the nursing staff. Adjustment.

Infusion pumps are commonly used when precise control of the infusion flow rate is required, but the infusion pump needs to be used in the presence of a power source, which is inconvenient to carry, expensive, unfavorable, and has been operated. Complex, not intuitive and simple.

Summary of the invention

It is an object of the present invention to provide an infusion flow rate regulator that is convenient to operate and that can more accurately control the infusion flow rate.

The technical solution adopted by the present invention is:

An infusion flow rate adjuster comprises a fixed base with a fixed base inlet and a fixed base outlet, and an adjustment rod mounted on the fixed base; the fixed base is connected to the fixed base inlet and the fixed base a liquid flow passage between the liquid ports; an adjusting rod passage communicating with the liquid flow passage is disposed on the fixed base; a movable adjusting rod is arranged in the adjusting rod passage, and a watertight seal between the adjusting rod and the adjusting rod passage; The overlapping portion area of the bottom shape of the adjusting rod and the cross-sectional shape of the liquid flow path adjusts the cross-sectional area through which the liquid flow path passes for the liquid.

An infusion flow rate adjuster comprises a fixed base with a fixed base inlet and a fixed base outlet, and an adjustment rod mounted on the fixed base; the fixed base is connected to the adjustment rod inlet and the fixed base a liquid flow channel between the liquid ports; a fixed rod channel disposed on the fixed base with the liquid flow channel; a movable adjusting rod in the adjusting rod channel, a watertight seal between the adjusting rod and the adjusting rod channel; Providing an adjusting rod inlet port and an adjusting rod outlet opening communicating with the fixed base liquid outlet; adjusting the liquid flow passage for liquid passage by adjusting an area of the overlapping portion of the bottom shape of the adjusting rod and the cross-sectional shape of the liquid flow passage Cross-sectional area.

Further as an improvement of the technical solution of the present invention, the adjustment rod passage is disposed perpendicular to the liquid flow path.

Further, as an improvement of the technical solution of the present invention, the liquid flow channel is a groove provided in the interior of the fixed base or a groove for adjusting the side wall of the rod channel.

Further as an improvement of the technical solution of the present invention, the liquid flow path is a groove which is spaced apart, or a groove whose cross-sectional area continuously changes.

Further, as an improvement of the technical solution of the present invention, the adjusting rod is intercepted by changing the length and/or the angle of the bottom embedded liquid flow channel, and the bottom shape of the adjusting rod is matched with the cross-sectional shape of the liquid flow channel, and the liquid flow channel can be completely completed. Cut off.

Further, as an improvement of the technical solution of the present invention, the adjusting rod is provided with at least one circular through hole, and the adjusting rod adjusts the flow velocity by changing the area of the intersection portion between the circular through hole and the cross section of the liquid flow passage by the vertical movement.

Further, as an improvement of the technical solution of the present invention, the adjusting rod is provided with an inner hollow hollow cavity, and the adjusting rod is provided with a liquid discharging passage communicating with the hollow cavity, and the liquid discharging passage is integrally formed with the adjusting rod, and the liquid discharging passage is perpendicular to the adjusting rod.

Further, as an improvement of the technical solution of the present invention, the fixed base liquid outlet and the adjusting rod channel are disposed in the same channel.

Further, as an improvement of the technical solution of the present invention, the adjusting rod is provided with at least one closed ring, and the closing ring protrudes between the surface of the adjusting rod and the adjusting rod passage to achieve sealing.

Further as an improvement of the technical solution of the present invention, the closed ring has a semicircular or trapezoidal cross section.

Further, as an improvement of the technical solution of the present invention, the upper surface of the fixed base is provided with a blocking outer ring surrounding the outer periphery of the adjusting rod passage, and the auxiliary pressing plate is disposed around the outer periphery of the adjusting rod and can be embedded in the outer ring of the blocking outer ring to closely contact the inner wall of the outer ring. Barrier inner ring, the barrier outer ring and A barrier gasket is provided between the barrier inner rings.

Further, as an improvement of the technical solution of the present invention, the top end of the adjusting rod is provided with an auxiliary pressing plate, the adjusting rod passage protrudes from the upper surface of the fixed base, and a return spring is arranged between the auxiliary pressing plate and the fixed base.

Further, as an improvement of the technical solution of the present invention, an auxiliary fixing plate and a moving pressing plate are arranged above the auxiliary pressing plate, one end of the moving pressing plate is placed above the auxiliary pressing plate, and the other end of the moving pressing plate is hingedly fixed on the adjusting fixing seat, and the fixing seat is adjusted The utility model is provided with a chute, wherein the chute is provided with a pulley which can move horizontally along the chute, and the bottom of the pulley is pressed against the moving platen, and the driving platen is gradually pressed down by the auxiliary pressing plate during the sliding process of the pulley.

Further, as an improvement of the technical solution of the present invention, a limit wheel coaxially disposed with the pulley is fixed on the pulley, and a plurality of cut-off card positions are arranged above or below the sliding slot, and the limit wheel is embedded in the cut-off card position during the sliding process of the pulley to be fixed. Pulleys, both ends of the chute are provided with pulley stops.

Further, as an improvement of the technical solution of the present invention, the adjustment fixing seat is provided with a flow rate tick line disposed along the axial direction of the chute.

Further, as an improvement of the technical solution of the present invention, the top of the adjusting rod is provided with an adjusting wheel, and the fixed base is provided with a limiting stopper protruding from the surface of the fixed base and placed on the top of the adjusting wheel, and the adjusting rod is adjusted by the rotating adjusting wheel. The length and/or angle within the rod channel and the flow channel.

Further, as an improvement of the technical solution of the present invention, a fixed positioning chassis is disposed on the fixed base, and a positioning groove is disposed along the upper surface of the positioning chassis, and at least one positioning protrusion is disposed below the adjusting wheel, and the adjusting wheel is embedded by the positioning protrusion Positioning in the positioning groove.

Further, as an improvement of the technical solution of the present invention, a positioning circle is provided on the positioning chassis. The sub-changing positioning groove, the positioning protrusion is embedded in each positioning groove while adjusting the length of the adjusting rod extending into the liquid flow channel.

Further, as an improvement of the technical solution of the present invention, the adjusting rod and the adjusting rod passage are connected by screwing.

Further, as an improvement of the technical solution of the present invention, the adjusting wheel is provided with a flow rate calibration line provided around the adjusting wheel.

Further, as an improvement of the technical solution of the present invention, the two sides of the fixed base are provided with a regulating valve groove, and the top end of the adjusting rod is provided with a pawl that is wrapped around the fixed base and closely adheres to the groove wall.

Further as an improvement of the technical solution of the present invention, the top end of the adjusting rod is provided with an adjusting ring.

Further, as an improvement of the technical solution of the present invention, the two opposite adjusting valve grooves are provided with a plurality of adjusting teeth from top to bottom, and the adjusting rod top end extends downwardly to cover the adjusting teeth which are fixed on both sides of the fixed base. Two pawls are placed opposite each other.

Further as an improvement of the technical solution of the present invention, the width of the two regulating valve grooves is larger than the width between the two pawls.

Further, as an improvement of the technical solution of the present invention, a locking card position is provided between the fixed base and the adjusting rod.

Further, as an improvement of the technical solution of the present invention, the fixing base and the adjusting rod are integrally formed, or the fixing base and the adjusting rod are independently arranged from each other.

Further, as an improvement of the technical solution of the present invention, the fixing base and the adjusting rod are integrally connected by the bendable connecting belt.

The invention has the beneficial effects that the infusion flow rate adjuster passes through the fixed base or the fixed bottom The seat and the adjusting rod are used for liquid guiding, and the cross-sectional area of the liquid flow channel for the infusion at the speed regulating position is adjusted by adjusting the movement of the rod along the adjusting rod channel, thereby changing the infusion flow rate in the infusion device, and the device passes through the fixed base. The adjustment rod channel realizes the adjustment rod fixing, so that the flow rate can be better positioned after the flow setting is completed, the flow rate does not drift and the operation process is simple, the flow rate control is more accurate, and the clinical current use habits and various application environments are ensured, and the infusion safety is ensured. It can be applied to conventional infusion, and it can reduce the chance of clogging when it is applied to high-viscosity or high-precipitation liquid infusion such as blood products, intravenous nutrition and mannitol.

DRAWINGS

The present invention will be further described below in conjunction with the accompanying drawings:

Figure 1 is a front elevational view showing the internal structure of the liquid flow passage in the full circulation state in the first embodiment of the present invention;

Figure 2 is a front elevational view showing the internal structure of the first embodiment of the present invention in a fully closed state;

Figure 3 is a front elevational view showing the structure of the fixed base in the first embodiment of the present invention;

4 is a schematic view showing the external structure marked with a scale according to the first embodiment of the present invention;

Figure 5 is a schematic view showing the overall structure of a chute using parallel rails in the first embodiment of the present invention;

6 is a schematic overall structural view of a second embodiment of the present invention after a cut-off card is disposed in a chute;

Figure 7 is a schematic view showing the structural state of the liquid flow passage in the full circulation state of the inside of the adjusting rod in the third embodiment of the present invention;

Figure 8 is a flow chart of the inside of the adjusting rod in the third embodiment of the present invention Schematic diagram of the structural state of the fully closed state of the track;

9 is a schematic structural view of a fixed base when the liquid outlet of the fixed base and the adjusting rod channel are disposed in the same channel in the third embodiment of the present invention;

Figure 10 is a schematic view showing the overall structure of an adjusting rod in a third embodiment of the present invention;

Figure 11 is a schematic view showing the overall structure of the liquid flow channel in the full circulation state in the fourth embodiment of the present invention;

Figure 12 is a schematic view showing the overall structure of the liquid flow channel in the fully closed state in the fourth embodiment of the present invention;

Figure 13 is a plan view showing the structure of the adjusting rod in the fourth embodiment of the present invention;

Figure 14 is a front elevational view showing the structure of the adjusting rod in the fourth embodiment of the present invention;

Figure 15 is a front elevational view showing the structure of a fixed base in a fourth embodiment of the present invention;

Figure 16 is a plan view showing the structure of a fixed base according to a fourth embodiment of the present invention;

Figure 17 is a plan view showing the overall structure of a scale line in a fourth embodiment of the present invention;

Figure 18 is a front elevational view showing the entire structure of the liquid flow path in the fully circulated state in the fifth embodiment of the present invention;

Figure 19 is a side view showing the entire structure of the liquid flow path in a flow state in the fifth embodiment of the present invention;

Figure 20 is a side view showing the entire structure of a sixth embodiment of the present invention;

Figure 21 is a front elevational view showing the structure of the fixed base in the fifth and sixth embodiments of the present invention;

Figure 22 is a front elevational view showing the entire structure of the liquid flow channel in the fully closed state in the fifth and sixth embodiments of the present invention;

Figure 23 is a front elevational view showing the entire structure of the fixing base in the fifth and sixth embodiments of the present invention;

Figure 24 is a schematic view showing the overall structure of the adjusting rod and the pawl in the sixth embodiment of the present invention;

Figure 25 is a schematic view showing the structure of a first embodiment of the through hole provided in the adjusting rod of the present invention;

Figure 26 is a schematic view showing the structure of a second embodiment of the through hole provided in the adjusting rod of the present invention;

Figure 27 is a schematic view showing the integrated assembly of the embodiment of the present invention;

28 is a schematic view of an integrated assembly process of an embodiment of the present invention.

detailed description

1 to 28, the present invention is an infusion flow rate adjuster comprising a fixed base 1 provided with a fixed base inlet port and a fixed base liquid outlet, and an adjustment rod 2 mounted on the fixed base 1; the fixed base 1 a liquid flow channel 11 connected between the fixed base liquid inlet and the fixed base liquid outlet; the fixed base 1 is provided with an adjusting rod passage 12 communicating with the liquid flow passage 11; The movable adjusting rod 2, the watertight seal between the adjusting rod 2 and the adjusting rod passage 12; adjusting the liquid flow passage 11 for liquid passage by adjusting the overlapping portion area of the bottom shape of the adjusting rod 2 and the cross-sectional shape of the liquid flow passage 11. Cross-sectional area.

An infusion flow rate adjuster comprises a fixed base 1 provided with a fixed base inlet and a fixed base outlet, and an adjustment rod 2 mounted on the fixed base 1; the fixed base is connected to the adjustment rod inlet and a liquid flow passage 11 between the liquid outlets of the fixed base; the fixed base 1 is provided with an adjusting rod passage 12 communicating with the liquid flow passage 11; the adjusting rod passage 12 is provided with a movable adjusting rod 2, the adjusting rod 2 and the adjusting The rod channel 12 is watertightly sealed; the adjusting rod 2 is provided with an adjusting rod inlet port and an adjusting rod outlet port communicating with the fixed base liquid outlet; by adjusting the bottom shape of the adjusting rod 2 and the liquid flow channel 11 Section shape The overlap portion area adjusts the cross-sectional area of the liquid flow path 11 through which the liquid passes.

The infusion flow rate adjuster performs liquid guiding by fixing the base 1 or the fixed base 1 and the adjusting rod 2, and moves the adjusting rod 2 along the adjusting rod passage 11 to adjust the cross section of the liquid flow path 11 for infusion at the speed regulating position. The area, thereby changing the infusion flow rate in the infusion device, the device is fixed by the adjustment rod channel in the fixed base, so that the flow rate can be set better after the flow rate setting is completed, the flow rate does not drift and the operation process is simple, and the flow rate is controlled. More accurate, in line with the current clinical habits, a variety of application environments, to ensure the safety of infusion, can be applied to conventional infusion, applied to blood products, intravenous nutrition, mannitol and other high viscosity or high precipitation liquid infusion, more Can reduce the chance of blockage.

As a preferred embodiment of the invention, the adjustment rod channel 12 is disposed perpendicular to the flow channel 11.

As a preferred embodiment of the present invention, the liquid flow path 11 is a groove provided inside the fixed base 1 or a groove for adjusting the side wall of the rod channel.

As a preferred embodiment of the present invention, the liquid flow path 11 is a groove having an interval distribution or a groove having a continuously varying cross-sectional area. As a preferred embodiment of the present invention, the adjusting rod 2 is intercepted by changing the length and/or the angle of the bottom embedded liquid flow path 11, and the bottom shape of the adjusting rod 2 is fitted to the cross-sectional shape of the liquid flow path 11, and the liquid can be circulated. The passage 11 is completely shut off, and when the shape of the bottom of the adjustment rod 2 and the cross-sectional shape of the liquid flow path 11 are zero, the liquid flow path 11 can flow through the liquid to the maximum flow.

As a preferred embodiment of the present invention, the adjusting rod 2 is provided with at least one circular through hole 21, and the adjusting rod 2 adjusts the flow velocity by changing the area of the intersection between the circular through hole 21 and the cross section of the liquid flow path 11 by vertical movement. .

As a preferred embodiment of the present invention, the adjustment rod 2 is provided with a semi-open bottom structure, and the adjustment rod 2 changes the cross section between the semi-open bottom structure and the liquid flow passage 11 by rotating the shaft along the axis of the adjustment rod passage 12. Partial area size to adjust the flow rate.

As a preferred embodiment of the present invention, the adjusting rod 2 is provided with an inner hollow hollow cavity 22, and the adjusting rod 2 is provided with a liquid discharging passage 23 communicating with the hollow cavity 22, and the liquid discharging passage 23 is integrally formed with the adjusting rod 2, and the liquid is discharged. The passage 23 is perpendicular to the adjustment rod 2.

As a preferred embodiment of the present invention, the fixed base liquid outlet and the adjustment rod passage 12 are disposed in the same passage.

As a preferred embodiment of the invention, the adjustment rod 2 is provided with at least one closure ring 24 which protrudes between the surface of the adjustment rod 2 and the adjustment rod passage 12 for sealing.

As a preferred embodiment of the invention, the closed loop 24 is semi-circular or trapezoidal in cross section.

As a preferred embodiment of the present invention, the upper surface of the fixed base 1 is provided with a blocking outer ring 121 surrounding the periphery of the adjusting rod passage 12, and the auxiliary pressing plate is provided around the periphery of the adjusting rod 2 and can be embedded in the blocking outer ring 121. The inner ring 122 is blocked from the inner wall of the outer ring 121, and a barrier gasket 123 is disposed between the outer ring 121 and the inner ring 122.

As a preferred embodiment of the present invention, the top end of the adjusting rod 2 is provided with an auxiliary pressing plate 3, and the adjusting rod passage 12 protrudes from the upper surface of the fixed base 1, and a return spring 31 is disposed between the auxiliary pressing plate 3 and the fixed base 1.

As a preferred embodiment of the present invention, the auxiliary fixing plate 3 is provided with an adjusting fixing seat 4 and a moving pressing plate 41. One end of the moving pressing plate 41 is placed above the auxiliary pressing plate 3, and the other end of the moving pressing plate 41 is hingedly fixed to the adjusting fixing seat 4 Above, the adjustment fixing seat 4 is provided The chute 42 is provided with a pulley 43 horizontally movable along the chute 42. The bottom of the pulley 43 is pressed against the moving platen 41. During the sliding process of the pulley 43, the pressing plate is gradually pressed down to press the auxiliary platen 3.

As a preferred embodiment of the present invention, a limit wheel disposed coaxially with the pulley 43 is fixed to the pulley 43. A plurality of cut-off latches 44 are disposed above or below the chute 42, and the limit wheel is embedded and blocked during the sliding process of the pulley 43. The card position 44 can fix the pulley 43.

As a preferred embodiment of the present invention, the chute 42 is provided with pulley stops 45 at both ends.

As a preferred embodiment of the present invention, the adjustment mount 4 is provided with a flow rate calibration line disposed along the axial direction of the chute 42.

As a first embodiment of the present invention, a fixed-shaped liquid flow channel 11 is disposed in the fixed base 1, and the fixed base liquid inlet and the fixed base liquid outlet are connected through the liquid flow channel 11, and the regulator is provided with a liquid circulation changeable The adjustment rod 2 of the inner diameter of the channel 11.

The flow passage 11 is a fixed-shaped groove that communicates with the adjustment rod passage 12. At least one of the flow passages 11 is provided, and the liquid flow passages 11 are preferably spaced-apart grooves or grooves having a continuously varying cross-sectional area. In particular, the flow channel 11 can be all or a portion of the groove, and the cross section of the groove can be triangular, trapezoidal, semi-circular, rectangular or other shape.

The fixed base 1 accommodates a pipe respectively connecting the fixed base inlet port and the fixed base liquid outlet, and the fixed base inlet port and the fixed base liquid outlet are connected through the liquid flow channel 11; or the fixed base 1 and the adjusting rod 2 are respectively respectively The pipeline is connected with the fixed base inlet port and the fixed base outlet port, and the adjusting rod inlet port and the fixed base outlet port are connected through the liquid flow channel 11.

The fixed base 1 is provided with an adjustment fixing seat 4 in which a sliding groove 42 is accommodated, and the arrangement of the adjustment fixing seat 4 can well fix the components of the pulley 43, the moving platen 41 and the like.

In the above adjuster, both ends of the chute 42 on the adjusting fixing base 4 are provided with a cut-off card position 44 for limiting the displacement of the pulley 43. The cut-off card position 44 is arranged to cooperate with the movable platen 41 by the excessive displacement of the restriction pulley 43, and the maximum displacement of the pulley 43 can be well defined, and the limitation of the auxiliary plate by the moving platen 41 is matched, which is more convenient to operate, reducing misoperation and avoiding adjustment. Stick 2 is out.

The infusion regulator is provided with an adjustment rod 2 which can change position and change the cross-sectional area of the flow channel 11 with different positions. The adjustment rod 2 is preferably provided with an adjustment rod 2 in a hermetic structure, or an open or semi-open structure adjustment rod 2, or an adjustment rod 2 having a hollow structure, and the like.

The adjusting rod 2 adopts a cylindrical shape, and the outer diameter of the adjusting rod 2 is greater than or equal to the inner diameter of the adjusting rod passage 12, and can be pressed into the adjusting rod passage 12 with a little force during installation, so that the adjusting rod 2 and the adjusting rod passage 12 can closely cooperate with each other. To avoid liquid leakage and leakage, the adjusting rod 2 can also adopt a rectangular parallelepiped or other shape, and the outer diameter of the adjusting rod 2 is slightly larger than or equal to the inner diameter of the adjusting rod passage 12, so that the adjusting rod 2 can be broken without being easily installed.

The adjustment rod 2 is provided with an outwardly bulging closure ring 24, at least one of which is a complete closed loop surrounding the adjustment rod 2, disposed at the rear of the adjustment rod 2, the outer diameter of the closure ring 24 being larger than the outer diameter of the adjustment rod 2. The closure ring 24 is preferably provided with two or more, and the arrangement of the closure ring 24 provides for a better seal between the adjustment rod 2 and the adjustment rod passage 12. The cross section of the closure ring 24 is preferably semi-circular, or it may be trapezoidal or other shape.

When the fixed base 1 is provided with a fixed base liquid inlet and a fixed base liquid outlet respectively connected to the infusion pipe, the fixed base liquid inlet and the fixed base liquid outlet pass through the fixed base 1 When the flow passages 11 are in communication, the adjustment rod 2 is preferably designed in a closed configuration, or the adjustment rod 2 is in an open or semi-open configuration.

When the adjusting rod 2 is in a closed structure, when the adjusting rod 2 is in different positions, the adjusting rod 2 intersects the liquid flow path 11, the intersecting cross-sectional area is at least zero, and the entire liquid flow path 11 is covered at the maximum. Accordingly, the cross-sectional area of the liquid flow path 11 is successively decreased to zero from the maximum value. Preferably, the movement trajectory of the adjustment rod 2 is sequentially deviated in one direction, such as increasing from top to bottom, such that the cross-sectional area of the adjustment rod 2 and the liquid flow path 11 sequentially increases or decreases. When the infusion flow rate is adjusted, the infusion flow rate can be sequentially increased or decreased, and the infusion flow rate can be conveniently adjusted.

When the adjusting rod 2 adopts an open or semi-open structure, the adjusting rod 2 is provided with a circular through hole 21, and the circular through hole 21 is provided with one or a distribution of intervals and different apertures. When the circular through hole 21 is one, the circular through hole 21 corresponds to the liquid flow path 11, and the corresponding cross-sectional area is at least zero, and the maximum is equal to the entire liquid flow path 11. When the circular through holes 21 are arranged with a spacing distribution and different apertures, the circular through holes 21 of different apertures correspond to the liquid flow path 11, and the corresponding cross-sectional area is at least zero, and the maximum is equal to the entire liquid flow path 11. The movement trajectory of the adjustment rod 2 is sequentially deviated in one direction, as in order from top to bottom, such that the circular cross-hole 21 on the adjustment rod 2 and the corresponding cross-sectional area of the liquid flow passage 11 are sequentially increased or decreased. When the infusion flow rate is adjusted, the infusion flow rate can be sequentially increased or decreased to facilitate the infusion to adjust the flow rate. The circular through hole 21 may have a semicircular, tubular or other shape in cross section.

The fixed base 1 is provided with a fixed base liquid inlet connected to the infusion pipe, and the adjusting rod 2 is provided with an adjusting rod liquid outlet connected to the infusion pipe, and the adjusting rod 2 is provided with a fixed base liquid outlet The adjusting rod inlet port and the adjusting rod outlet port are connected, and the adjusting rod inlet port and the fixed base outlet port are connected through the liquid flow channel 11 on the fixed base 1. At this time, the adjusting rod 2 preferably adopts a hollow structure, and the wall of the adjusting rod 2 can adopt a completely closed manner, and an opening is arranged at the end of the adjusting rod 2, and the speed adjusting manner is similar to the adjusting rod 2 adopting a closed structure, or the adjusting rod 2 is provided with a circular passage. The hole 21 and the circular through hole 21 are provided with one or an arrangement of spaced apart and different apertures, and the speed adjustment mode is similar to the adjustment rod 2 adopting an open or semi-open structure.

The fixed base 1 can also be provided with a fixed base liquid outlet connected to the infusion pipe, the adjusting rod 2 is provided with an adjusting rod inlet port communicating with the infusion pipe, and the adjusting rod 2 is provided with an adjusting rod connected to the fixed base inlet port. The mouth and the adjusting rod outlet port, the adjusting rod 2 adopts a hollow structure, and the fixed base liquid inlet port and the adjusting rod liquid outlet port are still connected through the liquid flow channel 11 on the fixed base 1, and the connection relationship of each channel can be similarly changed.

The adjusting rod 2 can adjust the infusion flow rate alone or in combination with a single groove as the liquid flow path 11, or can adjust the infusion flow rate together with two or more grooves as the liquid flow path 11, or even more than one adjusting rod 2 The infusion flow rate is adjusted in conjunction with various combinations of more than one groove as the flow channel 11.

When two or more adjustment rods 2 are used, the adjustment rods 2 may have the same structure or different structures. It is even possible to employ two or more structural patterns of the same structure or different structures on the same adjustment rod 2. In this way, the cross-sectional area of the flow channel 11 can be adjusted more precisely, and the infusion flow rate can be more precisely adjusted.

The adjusting rod 2 extends rearwardly out of the auxiliary plate for restricting the disengagement of the elastic member and the adjustment of the adjusting rod 2 by the movement of the pressing plate 41. The auxiliary plate preferably has an upper circular arc shape to facilitate correspondence with the movable platen 41 at different angles. a push between the adjustment rod 2 and the fixed base 1 The return spring 31 is separated from the two.

The adjuster is provided with a movable platen 41 which is fixed to the holder on the side of the hinge position of the movable platen 41, the corresponding auxiliary plate below, the upper corresponding pulley 43, and a high-friction hard non-deformable material. The moving platen 41 is moved about the fixed axis of the moving platen 41. The setting of the moving platen enlarges the adjustment movement distance of the adjustment rod 2, makes the infusion flow rate adjustment smoother, improves the speed regulation performance of the infusion regulator, and also avoids the inflow velocity drift of the pulley 43 due to inactive sliding.

The adjuster is provided with a movable outer peripheral pulley 93 with a non-slip groove. The arrangement of the pulley 43 is very convenient for the operator to adjust the infusion flow rate. The pulley 43 is provided with a pulley shaft symmetrically disposed on both sides of the pulley 43. The retainer is provided with a chute 42 for moving the pulley shaft, and the chute 42 can effectively control the movement track of the pulley shaft. When the chute 42 adopts the one-side or double-side wavy guide rail mode, the discontinuous constant speed adjustment of the flow rate of the liquid flow passage 11 can be realized. When the chute 42 is in the form of a parallel rail, the flow passage 11 can be adjusted steplessly at a constant speed, and the infusion flow rate can be adjusted more easily.

The adjuster is provided with a scale panel and a flow rate indicator. The scale panel is fixed on the fixed base 1. The corresponding flow rate indicator moves synchronously with the pulley 43, and the two cooperate to indicate the infusion flow rate and the infusion flow state of the infusion set. Between the adjusting rod 2 and the fixed base 1, there is provided a blocking device for preventing internal components such as the adjusting rod 2 and the adjusting rod passage 12 from communicating with the outside.

The barrier device is composed of a barrier inner ring 122, a barrier gasket 123, and a barrier outer ring 121. Other barrier structures such as flexible barrier films can also be used. The adjusting wheel is provided with a blocking inner ring 122 surrounding the adjusting rod 2, which is circular, and the blocking inner ring 122 is preferably the same axis as the adjusting rod 2. A barrier gasket 123 is disposed between the barrier inner ring 122 and the barrier outer ring 121 to block the gasket 123 is annular and placed on the fixing groove of the barrier gasket 123 blocking the outer ring 121 to serve as a sealing function.

The fixed base 1 is provided with a blocking outer ring 121 which is tightly sleeved and blocks the inner ring 122 and has a sealing groove 123 fixing groove. The barrier outer ring 121 is preferably circular in shape and has the same axis as the adjustment rod passage 12. The barrier device can also adopt a flexible barrier film. One side of the flexible barrier film is fixed on the auxiliary plate, and the other side is fixed on the fixed base 1 and surrounds the adjustment rod 2, the adjustment rod passage 12 and the elastic member. The barrier inner ring 122, the barrier gasket 123 and the barrier outer ring 121 cooperate to effectively separate the internal components from the outside, and the application of the blocking device can well prevent the internal components such as the adjusting rod 2 and the adjusting rod passage 12 from communicating with the outside. Internal components such as the adjustment rod 2 and the adjustment rod passage 12 are kept sterile during use. The application of the barrier device also maintains the positional state of the adjustment rod 2 and the adjustment rod passage 12 well.

As a preferred embodiment of the present invention, the top of the adjusting rod 2 is provided with an adjusting wheel 5, and the fixed base 1 is provided with a limiting member 51 protruding from the surface of the fixed base 1 and placed on the top of the adjusting wheel 5, by rotating the adjusting wheel 5 The length and/or angle of the adjustment rod 2 into the adjustment rod passage 12 and the flow passage 11 is adjusted.

As a preferred embodiment of the present invention, the fixed base 1 is provided with a ring positioning chassis 52. A positioning groove is arranged along the upper surface of the positioning chassis 52. At least one positioning protrusion is disposed below the adjusting wheel 5. The adjusting wheel 5 passes through The positioning protrusion is embedded in the positioning groove for positioning.

As a preferred embodiment of the present invention, the positioning chassis 52 is provided with a positioning groove whose height is sequentially changed. The positioning protrusion is embedded in each positioning groove while adjusting the length and angle of the adjusting rod 2 extending into the liquid flow channel 11. .

As a preferred embodiment of the present invention, the positioning chassis 52 is provided with a positioning groove with a continuously varying height. The positioning protrusions are embedded in different height positioning grooves while adjusting the length and angle of the adjusting rod extending into the liquid flow channel 11. .

As a preferred embodiment of the invention, the adjustment rod 2 is connected to the adjustment rod passage 12 by a screw.

As a preferred embodiment of the invention, the adjustment wheel 5 is provided with a flow rate tick line provided around the adjustment wheel 5.

As an embodiment of the present invention, the adjusting rod passage 12 is provided with an internal thread, and the adjusting rod 2 is provided with an external thread. The fixed base 1 is provided with a limiting member 51 for defining the displacement of the adjusting rod 2. The setting of the limiting member 51 can well define the maximum displacement of the adjusting rod 2, facilitate the manipulation, reduce the erroneous operation and prevent the adjusting rod 2 from coming off.

The infusion regulator is provided with an adjusting rod 2 which can change the position and change the cross-sectional area of the liquid flow channel 11 with different positions, an adjusting rod 2 which is a closed structure, or an adjusting rod 2 which is an open or semi-open structure, or a hollow structure Adjustment rod 2. The adjusting rod 2 adopts a cylindrical shape, and the outer diameter of the adjusting rod 2 is greater than or equal to the inner diameter of the adjusting rod passage 12, and can be pressed into the adjusting rod passage 12 with a little force during installation, so that the adjusting rod and the adjusting rod passage 12 can closely cooperate with each other to avoid Seepage and leakage. The adjustment rod 2 can also be in the shape of a rectangular parallelepiped or other shape. Preferably, the outer diameter of the adjusting rod 2 is slightly larger than or equal to the inner diameter of the adjusting rod passage 12, so that the adjusting rod 2 can be broken without being easily installed.

Adjusting the internal thread on the rod passage 12 and the external thread on the adjusting rod can facilitate the speed regulation, and can better match the adjusting rod 2 and the adjusting rod passage 12 to each other, thereby better avoiding leakage and leakage. .

When the adjusting rod 2 is in a closed structure, when the adjusting rod 2 is in different positions, the adjusting rod 2 intersects the liquid flow path 11, the intersecting cross-sectional area is at least zero, and the entire liquid flow path 11 is covered at the maximum. Accordingly, the cross-sectional area of the liquid flow path 11 is successively decreased to zero from the maximum value. Preferably, the movement trajectory of the adjustment rod 2 is sequentially deviated in one direction, such as increasing from top to bottom, such that the cross-sectional area of the adjustment rod 2 and the liquid flow path 11 sequentially increases or decreases. When the infusion flow rate is adjusted, the infusion flow rate can be sequentially increased or decreased, and the infusion flow rate can be conveniently adjusted.

When the adjusting rod 2 adopts an open or semi-open structure, the adjusting rod 2 is provided with a groove, and the groove is provided with one or a distribution of intervals and different apertures. When the groove is one, the groove corresponds to the liquid flow path 11, and the corresponding cross-sectional area is at least zero, and the maximum is equal to the entire liquid flow path 11. When the grooves are arranged with a spacing distribution and different apertures, the grooves of different apertures correspond to the liquid flow channel 11, the corresponding cross-sectional area is at least zero, and the maximum is equal to the entire liquid flow channel 11. Preferably, the movement trajectory of the adjustment rod 2 is sequentially deviated in one direction, as in order from top to bottom, such that the corresponding cross-sectional area of the groove on the adjustment rod 2 and the liquid flow channel 11 is sequentially increased or decreased. When the infusion flow rate is adjusted, the infusion flow rate can be sequentially increased or decreased to facilitate the infusion to adjust the flow rate. The cross-sectional area of the groove can be semi-circular, tubular or other shape.

The adjusting rod 2 extends outwardly from the adjusting wheel 5. The adjusting wheel 5 is entirely in the shape of a disk. The center of the adjusting wheel 5 is arranged on the adjusting rod 2. The adjusting rod 2 serves as the rotating shaft of the adjusting wheel 5. When adjusting the flow rate, the adjusting wheel 5 is adjusted. The adjusting rod 2 is pivoted and rotates relative to the fixed base 1. The adjusting wheel 5 extends upwardly with an adjusting wheel fixing shaft, and the fixing base 1 is provided with a fixing device for accommodating the adjusting wheel fixing shaft hole. Adjustable wheel fixing shaft and retainer settings for good fixed adjustment Round 5.

The fixed base 1 extends outwardly with a positioning chassis 52. The adjusting wheel 5 serves as a positioning movable plate, and a positioning device is disposed between the positioning chassis 52 and the positioning movable plate. The positioning device may be a matching positioning protrusion and a positioning groove.

Preferably, the positioning device is a hemispherical protrusion and a hemispherical depression which are matched with each other, and the positioning device is a matching protrusion and a stepped height-changing depression, or the positioning device is a matching protrusion and a continuous height change. Depression.

Preferably, there are multiple sets of positioning devices. The setting of the positioning device can indicate whether the speed regulation is in place, facilitate the setting of the flow rate, avoid errors during adjustment, and affect the progress of the infusion. The positioning device can also be set to ensure that the flow rate will not drift easily after the flow rate is set. The height of the positioning groove sequentially changes in one direction, such as increasing from top to bottom, such that the cross-sectional area of the circular through hole 21 and the liquid flow path 11 on the adjusting rod 2 sequentially increases or decreases. When the flow rate is adjusted, the flow rate can be sequentially increased or decreased to facilitate the adjustment of the flow rate.

As a preferred embodiment, the positioning groove is distributed in a stepwise manner along the circumference, and the height of the central point of the positioning groove is gradually decreased in the clockwise direction. When the adjusting wheel 5 rotates, the positioning protrusion cooperates with the corresponding positioning groove to drive the adjustment. The rod 2 is displaced accordingly to achieve the purpose of setting the flow rate.

When the positioning groove adopts a depression having a stepped height variation, discontinuous constant speed adjustment of the flow rate of the liquid flow channel 11 can be achieved. When the positioning groove adopts a depression having a continuous height change, the stepless constant speed adjustment of the liquid flow path 11 can be realized, and the flow rate can be adjusted more easily.

The above regulator is provided with a scale panel and a flow rate indicator. The scale panel is fixed on the fixed base 1, and the corresponding flow rate indicator moves synchronously with the adjustment wheel 5, and the two cooperate to indicate Read the infusion flow rate and infusion flow status of the infusion set. Between the adjusting rod 2 and the fixed base 1, there is provided a blocking device for preventing internal components such as the adjusting rod 2 and the adjusting rod passage 12 from communicating with the outside.

As a preferred embodiment of the present invention, the fixed base 1 is provided with adjusting valve grooves on both sides thereof, and the top end of the adjusting rod 2 is provided with a pawl 6 which is wrapped around the fixed base 1 and is closely attached to the groove wall.

As a preferred embodiment of the present invention, the top end of the adjustment rod 2 is provided with an adjustment ring 61.

As a preferred embodiment of the present invention, the two opposite adjusting valve grooves are provided with a plurality of adjusting teeth 62 from top to bottom, and the top end of the adjusting rod 2 extends downwardly to adjust the outer surface of the fixing base 1 to be fastened on both sides. Two pawls 6 are disposed opposite each other on the teeth 62.

As a preferred embodiment of the invention, the width of the two adjustment valve grooves is greater than the width between the two pawls 6.

As a preferred embodiment of the present invention, a locking latch is provided between the fixed base 1 and the adjustment rod 2. The setting of the locking card position can well define the maximum displacement of the adjusting rod 2, which is convenient for manipulation and reduces misoperation.

As a preferred embodiment of the present invention, the fixed base 1 and the adjusting rod 2 are integrally formed, or the fixed base 1 and the adjusting rod 2 are disposed independently of each other.

As a preferred embodiment of the invention, the fixed base 1 and the adjusting rod 2 are integrally connected by a bendable connecting strip 7.

The integrated production of the connecting belt can reduce the product precision error caused by different injection molding conditions, and improve the matching ratio of the adjusting rod 2 and the adjusting rod passage 12.

As another embodiment of the present invention, the fixed base 1 is provided with a regulating valve groove, when When the adjustment valve groove is a wave-shaped groove, the different adjustment valve grooves have different distances from the upper plane of the adjustment rod passage 12 on the fixed base 1. The adjusting valve groove is distributed in a wave shape, the lengths of the different adjusting valve grooves are the same, the two sides are arranged in parallel, and the pawls 6 are respectively fixed with the corresponding adjusting valve grooves. The adjacent adjusting valve grooves have different distances from the upper surface of the fixed rod passage 12 of the fixed base 1 in a direction, such as increasing from top to bottom, so that the adjusting rod 2 can be adjusted when the infusion flow rate is adjusted. Increasing or decreasing the adjustment displacement in sequence makes it easy to adjust the infusion flow rate. The cross section of the adjustment valve groove may be toothed, stepped, wavy or other shape. The groove of the regulating valve groove is matched with the arrangement of the different structural adjusting rods 2, and the discontinuous constant speed adjustment of the infusion flow rate of the liquid flow channel 11 can be realized.

When the regulating valve groove is a groove extending in a plane, the regulating valve groove is preferably rectangular, and the two sides are arranged in parallel symmetry, and the pawls 6 are respectively fixed with the corresponding regulating valve grooves. In particular, the adjacent regulating valve grooves have different distances from the upper surface of the fixed rod passage 12 of the fixed base 1 in a direction, such as increasing from top to bottom, so that when the infusion flow rate is adjusted, the The adjustment rod 2 sequentially increases or decreases the adjustment displacement to facilitate adjustment of the infusion flow rate. The cross section of the adjustment valve groove may be a straight line, an arc or other shape. When the adjusting valve groove is arranged with the groove of the extended plane and the sealing structure adjusting rod 2, the stepless constant speed adjustment of the infusion flow rate of the liquid flow channel 11 can be realized, and the infusion flow rate can be adjusted more easily.

The adjusting rod 2 is provided with a pawl 6 which is interlocked with the adjusting rod 2. The fixed base 1 is provided with a regulating valve groove, and the adjusting rod 2 is provided with a pawl 6 which cooperate with each other to determine the position of the adjusting rod 2. The adjusting valve groove is preferably two paths, and the pawl 6 is preferably two. The spacing between the two adjusting valve grooves is greater than the spacing between the corresponding two pawls 6, so that the pawl 6 can more easily grasp the adjusting valve groove, Strengthen the robustness of both operations. Preferably, the combination position of the two has a combination of two or more. Adjustment The combination of the valve groove and the pawl 6 can facilitate the setting of the infusion flow rate, and can also ensure that the infusion flow rate drifts without changing easily after setting the infusion flow rate. The cross-section of the pawl 6 may be "L" shaped, rectangular, triangular, semi-circular or other shape, and the flow rate regulating valve is provided with an adjustment ring 61 that facilitates gripping and operation of the flow rate regulating valve.

The invention is of course not limited to the embodiments described above, and equivalent variations or substitutions may be made by those skilled in the art without departing from the spirit of the invention, and such equivalents or alternatives are included in the claims of the present application. Within the limits.

Claims (21)

An infusion flow rate regulator characterized by: The utility model comprises a fixed base provided with a fixed base liquid inlet and a fixed base liquid outlet, and an adjusting rod mounted on the fixed base; a liquid flow channel connected between the fixed base inlet port and the fixed base liquid outlet of the fixed base; The fixed base is provided with an adjusting rod passage communicating with the liquid flow passage; a movable adjusting rod is arranged in the adjusting rod passage, and the adjusting rod and the adjusting rod passage are watertightly sealed; The cross-sectional area through which the liquid passage passes for the liquid flow passage is adjusted by adjusting the area of the overlapping portion of the shape of the bottom of the adjusting rod and the sectional shape of the liquid flow path. An infusion flow rate regulator characterized by: The utility model comprises a fixed base provided with a fixed base liquid inlet and a fixed base liquid outlet, and an adjusting rod mounted on the fixed base; The fixed base is provided with a liquid flow channel connected between the adjusting rod inlet and the fixed base outlet; The fixed base is provided with an adjusting rod passage communicating with the liquid flow passage; a movable adjusting rod is arranged in the adjusting rod passage, and the adjusting rod and the adjusting rod passage are watertightly sealed; The adjusting rod is provided with an adjusting rod inlet opening and an adjusting rod outlet opening communicating with the liquid outlet of the fixed base; By adjusting the overlap between the shape of the bottom of the adjustment rod and the cross-sectional shape of the flow channel Partial area adjusts the cross-sectional area of the flow channel for liquid to pass through. The infusion flow rate adjuster according to claim 1 or 2, wherein the adjustment rod passage is disposed perpendicular to the liquid flow path. The infusion flow rate adjuster according to claim 3, wherein the liquid flow path is a groove provided inside the fixed base or a groove for adjusting a side wall of the rod channel. The infusion flow rate adjuster according to claim 4, wherein said adjusting rod is intercepted by changing a length and/or an angle of the bottom embedded liquid flow path, the bottom shape of said adjusting rod and the cross section of the liquid flow path The shape fits to completely shut off the flow channel. The infusion flow rate adjuster according to claim 4, wherein said adjusting rod is provided with at least one circular through hole, and said adjusting rod changes between the circular through hole and the cross section of the liquid flow path by vertical movement The area of the intersection is adjusted to adjust the flow rate. The infusion flow rate adjuster according to claim 2, wherein the adjusting rod is provided with an inner hollow hollow cavity, and the adjusting rod is provided with a liquid discharging passage communicating with the hollow cavity, and the liquid discharging passage is The adjustment rod is integrally formed, and the discharge passage is perpendicular to the adjustment rod. The infusion flow rate adjuster according to any one of claims 5 to 7, wherein the adjusting rod is provided with at least one closed ring protruding from the surface of the adjusting rod and the adjusting rod passage to achieve sealing. The closed ring has a semicircular or trapezoidal cross section. The infusion flow rate adjuster according to any one of claims 5 to 7, wherein The upper surface of the fixed base is provided with a blocking outer ring surrounding the outer periphery of the adjusting rod passage, and the auxiliary pressing plate is disposed under the barrier surrounding the outer side of the adjusting rod and can be embedded in the outer ring of the blocking outer ring. A ring, a barrier gasket is disposed between the barrier outer ring and the barrier inner ring. The infusion flow rate adjuster according to claim 5 or 6, wherein the top end of the adjusting rod is provided with an auxiliary pressing plate, and the adjusting rod passage protrudes from the upper surface of the fixed base, and between the auxiliary pressing plate and the fixed base A return spring is provided. The infusion flow rate adjuster according to claim 10, wherein the auxiliary pressure plate is provided with an adjustment fixing seat and a movable pressure plate, one end of the movable pressure plate is placed above the auxiliary pressure plate, and the other of the movable pressure plate One end is hingedly fixed on the adjusting fixing seat, and the adjusting fixing seat is provided with a sliding slot, wherein the sliding slot is provided with a pulley horizontally movable along the sliding slot, and the bottom of the pulley is pressed against the moving pressing plate, the pulley During the sliding process, the driving pressure plate is gradually pressed down to the auxiliary pressure plate. The infusion flow rate adjuster according to claim 11, wherein a limit wheel disposed coaxially with the pulley is fixed on the pulley, and a plurality of cut-off latches are arranged above or below the chute, the pulley During the sliding process, the limit wheel is embedded in the cut-off card position to fix the pulley, and the two ends of the chute are provided with a pulley stop position. The infusion flow rate adjuster according to claim 11 or 12, wherein the adjustment fixing seat is provided with a flow rate calibration line disposed along the axial direction of the chute. The infusion flow rate adjuster according to claim 5 or 6, wherein the top of the adjusting rod is provided with an adjusting wheel, and the fixing base is provided with a limit protruding from the surface of the fixed base and placed on the top of the adjusting wheel. a stopper that is adjusted by rotating the adjustment wheel The length and/or angle of the adjustment rod into the adjustment rod channel and the flow channel. The infusion flow rate adjuster according to claim 14, wherein the fixed base is provided with a circle of positioning chassis, and a positioning groove is arranged along the upper surface of the positioning chassis, and the adjusting wheel is provided below the adjusting wheel. At least one positioning protrusion, the adjusting wheel is positioned by being embedded in the positioning groove by the positioning protrusion. The infusion flow rate adjuster according to claim 15, wherein the positioning chassis is provided with a positioning groove whose height is sequentially changed, and the positioning protrusion is embedded in each positioning groove while adjusting the adjustment rod extension. The length into the flow channel. The infusion flow rate adjuster according to claim 16, wherein said adjusting rod and said adjusting rod passage are screwed. The infusion flow rate adjuster according to claim 5 or 6, wherein the fixed base is provided with adjusting valve grooves on both sides thereof, and the top end of the adjusting rod is provided with an adjusting ring, and the adjusting rod top is downward Extending a pawl that is wrapped around the fixed base and adheres to the wall of the groove. The infusion flow rate adjuster according to claim 18, wherein two opposite adjusting valve grooves are provided with a plurality of adjusting teeth from top to bottom, and are connected with the top end of the adjusting rod to be covered with a fixed base. The two outer pawls are oppositely disposed on the adjusting teeth on both sides, and the width of the two adjusting valve grooves is greater than the width between the two pawls. The infusion flow rate adjuster according to claim 18, wherein the fixed base and the adjustment rod are integrally formed, or the fixed base and the adjustment rod are independently disposed from each other. Infusion flow rate according to any one of claims 1 or 2 or 4 to 7. The adjuster is characterized in that: the fixed base and the adjusting rod are integrally connected by a bendable connecting strip.

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