JP6401931B2 - Infusion device - Google Patents

Description

  The present invention relates to an infusion device that is used for medical purposes, for example, when a medical solution is continuously supplied to a vein in a drip state.

  As an infusion pump or an infusion device used for this type of medical use, a plurality of inventions are known techniques. As a first known technique, a mechanism for selectively stopping the flow of fluid through an elastic tube (infusion tube) is formed in the base for holding the tube and communicated with the tube. A slide clamp that can be slidably attached to the base, movably between a closed position and an open position, and an opening formed in the slide clamp for receiving the tube; A substantially constricted region formed, wherein the constricted region closes the tube to stop fluid flow through the tube when the slide clamp is in the closed position; and a substantially open formed in the opening. An open area that allows fluid to flow through the tube when the slide clamp is in the open position, and a cantilevered flexible locking arm attached to the base. Having a tab and biased to the locking position, where the locking arm engages the slide clamp and prevents movement of the slide clamp from the closed position to the open position. And the tab is movable so as to bend toward the release position, in which the locking arm is removed from the slide clamp and the slide clamp is subsequently moved from the closed position to the open position. This is a mechanism having a flexible locking arm that allows movement (see Patent Document 1).

  In the mechanism for stopping the flow of liquid according to the first known technique, the entire infusion device is not shown, but prior to opening the door, the latch is released and the hook on the latch is on the slide clamp. Engaging with the protrusion, partially pulls the slide clamp from the base member, thereby closing the tube. This prevents free flow of fluid into the tube when the door is opened after the pump and the pump is inoperable. When the door is closed to resume pump operation, the boss on the door presses on the release tab, followed by the latch mechanism engaging and pushing the slide clamp into engagement with the base member, thereby causing the tube to Allows opening. This allows the pump to operate and allows fluid to flow through the tube, but when the infusion device is fitted with a slide clamp with the pumping tube and the infusion tube attached up and down Then, it is recognized that the slide clamp keeps the injection tube closed.

Further, according to the second known technique, when the door attached to the housing of the medical fluid infusion pump with the first hinge is opened, the flow stop closes the elastic tube (infusion tube), and the door is closed. A device for controlling the flow stop so that the flow stop allows flow through the elastic tube when the flow stop is in contact with the base of the flow stop for holding the elastic tube and slidably attached to the base And a sliding clamp configured to move between a closed arrangement that engages the tube and closes the elastic tube and a flow arrangement that allows flow through the elastic tube; The second hinge is closer to the pump mechanism in a direction perpendicular to the first hinge pivot axis and the second hinge pivot axis from the position of the first hinge. Placed on the platen, but the platen Disposed between the clamp and moving the door to the housing side, the door is engaged with the sliding clamp to move the sliding clamp to the flow arrangement, and the platen is connected to the main body and the main body of the platen. A flow stop actuating portion disposed away from the body portion as an extension of the portion, so that the body portion of the platen is piped to the medical fluid infusion pump while the platen is pivoted to the housing side by movement of the door And the flow stop actuating part contacts the flow stop before the slide clamp moves to the flow arrangement (see Patent Document 2).

  In the device according to the second known technology, the elastic tube (infusion tube) is divided into three parts, between the fluid source and the upstream fixture, between the upstream fixture and the non-flow-proof tower, and the tower. The slide clamps provided on the stoppers are individually attached between the injection needles, and the pressure plate attached with the second hinge presses the release tab toward the tower side to close the intravenous tube. From the open position to the open position, the sliding clamp is pulled back by engaging the fixed projection of the fixed arm.

  Further, a third known technique is an infusion device in which the infusion pump performs a pumping action on an actuated portion extending along the infusion pump in the infusion tube, and the actuated portion has a specified tension. In the non-relaxed state, the first and second portions of the infusion tube that are upstream and downstream of the affected portion of the infusion tube are arranged upstream and downstream of the infusion pump. First and second positioning means for positioning at the respective positions, first and second detection means for detecting that the first and second positioning means are in the positioning state, and This is an infusion device comprising a control means for operating the infusion pump only when the detection is performed by both the first and second detection means (see Patent Document 3).

  Also in the infusion device according to the third known technique, the infusion tube is divided into a plurality of parts, between the drip tube and the first positioning tool, between the first positioning tool and the second positioning tool, and second. Are separately connected between the positioning tool and the connecting cylinder, and between the connecting cylinder and the winged needle, and the actuated portion of the infusion tube has a prescribed cross-sectional area and is pumped from the infusion pump to the pump. Since the operation can be performed reliably, over-administration of infusion by free flow in the infusion tube and under-administration of infusion by an infusion tube with a small cross-sectional area can be prevented, and infusion with a high precision flow rate can be reliably performed. . Further, since the structure of the exhaust part after use is simple and the volume is small, the use cost is low and the waste is not bulky.

Japanese Patent No. 3133640 Japanese Patent No. 4394833 JP 2007-236597 A

  The elastic tube or the infusion tube according to any one of the first, second, and third known technologies is separately cut to a required length between the drip tube (fluid source), a plurality of positioning tools, and a patient needle. However, depending on the model of the infusion pump or infusion device used, the interval and length of each part differ, so only a special infusion tube formed according to the model can be used. It is necessary to classify a number of infusion tubes according to the type of device and complement each other.In addition, in the case of an emergency, the infusion device used cannot be mistaken for an infusion tube. Due to the communication with the nurse, there is a problem that it is necessary to start over by mistake.

In the above-described known techniques 1 and 2, in the mechanism for stopping the flow of fluid, it is essential to attach a slide clamp (sliding clamp) provided on the base (base) to the infusion device at a position where the infusion tube is closed. When the door is closed, the sliding clamp is moved in the front-rear direction to be in the open state. Prior to opening the door, the latch is released and the hook on the latch slides. Engage with the projection on the clamp and pull the slide clamp partially from the base member, thereby closing the tube, and it is necessary to check the state before and after installing the infusion tube , Operability or workability is poor, there is a problem in dealing with emergencies, and there is a work that cuts the infusion tube and connects it to the connection tool, which raises the manufacturing cost And it has a.

Further, in the infusion device according to the third known technique, as in the prior art, the infusion tube must be confirmed to be attached when the infusion tube is attached, and the knob is also pinched when removing the infusion tube. After all, the operability or workability is poor and there is a problem in dealing with emergencies.

  Therefore, in the infusion device according to the publicly known technology, it is possible to reduce the manufacturing cost by eliminating the operation of cutting the infusion tube and connecting it to the connection tool, and there is no act of confirming the state of the infusion tube when being attached to the infusion device. However, there is a problem to be solved in order to be able to always wear it in an appropriate state and to cope with an emergency situation.

The present invention provides at least a peristaltic pump, a body part having an attachment part for positioning and attaching an infusion tube, a door attached to the body part so as to be openable and closable, and a specific means for solving the above problems . A lock lever having a locking portion, a lever hook, and a protrusion is attached to the inside, and the infusion tube can be opened and closed via the cassette member by the locking action and unlocking action of the lock lever. as in the a infusion device, said infusion tube is continuous tube of one seamless, the said cassette member of the upper positioning member and a lower positioning member mounted to the tube to the mounting portion of the main body portion An infusion device is provided that is slidably attached to the main body .

  In the infusion device according to the present invention, the lock lever includes a columnar arm portion and a wall-shaped handle portion, and a lever hook and a protrusion are provided in parallel inside the handle portion; It is included as an additional requirement that it is spring biased in a direction that rotates in the direction and returns to rotation.

According to the infusion device of the present invention, the infusion tube is a single continuous tube without a joint , and the upper positioning member that is attached to the attachment portion of the main body and the cassette member that is the lower positioning member. It can be slidably attached to the main body, can be set without joints , and a lock lever having a latching portion, a lever hook, and a protrusion is attached to the inside of the door so that the lock lever can be locked and unlocked. The infusion tube can be opened and closed by moving the cassette clamp of the cassette member in an oblique direction by the action, and the initial state of the infusion tube, that is, the cassette member is closed or opened. In any of these states, it can be immediately attached to the infusion device, and the lock lever can be locked. In inevitably in the open state can be used, an effect that excellent stability and urgency.

  In addition, the infusion device according to the present invention can use an infusion tube that is fixed or slidably attached at a set interval without substantial seams or joints, and the infusion tube is provided on the lock lever. Because it can be done with the lever hooks and projections, it is easy to manufacture as an accessory part and reduce costs, and when attaching to or removing from the infusion device mounting part, it can be easily and accurately attached without various checks or operations. , And an excellent effect of being removable.

According to the infusion device of the present invention, the infusion tube is a single continuous tube without a joint , and the upper positioning member that is attached to the attachment portion of the main body and the cassette member that is the lower positioning member. It can be fixed or slidably mounted at a set interval, can be set substantially without joints , and a lock lever having a locking portion, a lever hook, and a projection is attached to the door, and the locking action of the lock lever The infusion tube can be opened and closed by moving the cassette clamp of the cassette member obliquely by the unlocking action, and the initial state of the infusion tube, that is, the cassette member is closed. In either open or open state, it can be immediately attached to the infusion device and the locking lever locked By the state inevitably in the open state can be used, an effect that excellent stability and urgency.

  The present invention will be described based on the illustrated embodiment. 1 to 6, the infusion device according to the present invention has a fixed control panel 2 and an openable / closable door 3 attached to the front surface of the main body 1, and the door 3 has a lock lever on the front side. 4 is attached so that it can be operated (pulled up to the front side), and the control panel 2 has a setting button, a numerical value input button 5 and the like necessary for the control, and a display unit 6 and the like on which setting contents and operation status are displayed Is provided in the same manner as in the conventional example.

  As shown in FIG. 2, a peristaltic pump 7 is provided on the inner side of the door 3, and a mounting portion 9 to which the infusion tube 8 is positioned and attached at a required interval above and below the peristaltic pump 7. 10 and a pin-shaped locking member 11 that locks the tip of the lock lever 4 on the side surface on the control panel 2 side. In addition, the side surface of the main body portion 1 is provided with a socket portion 12 to which a communication cable is connected, and a handle portion 13 that can be raised and lowered on the upper surface side so that the infusion device can be easily carried. On the inner side, a holding portion 14 for holding and holding the infusion tube 8 in a stable state is provided at a position corresponding to the peristaltic pump 7, a concave portion 15 in which the lock lever 4 is accommodated, and a free end portion (lower end portion) of the lock lever 4. A window portion 16 is provided that can be lifted or stowed by placing a finger on it.

  An example of the infusion tube 8 is as shown in FIGS. 3 (a), 3 (b) and 4, at least a continuous infusion tube 8 without a seam at least in a portion that passes or is set in the infusion device. Is used. That is, the upper positioning member 17 for positioning and attaching one continuous infusion tube 8 to the infusion device and the cassette member 18 as the lower positioning member are fixed or slid (sliding) at a set interval with respect to the infusion tube 8. It is attached as possible.

  As shown in FIG. 3B, the cassette member 18 is fitted or engaged with the cassette body 18a and the guide portion of the cassette body 18a so as to be slidable obliquely in the direction indicated by the arrow. The cassette body 18a is provided with an attachment portion 19 to the main body 1 and an insertion hole 20 for the infusion tube 8, and the infusion tube 8 is loosely fitted into the cassette clamp 18b. It has an insertion hole 21 and a slit-shaped clamping part 22 continuous to the insertion hole 21, and symmetrical inclined parts 23 and 24 are formed at both ends. In addition, although not shown in figure, the connection tool to an infusion tube and the connection tool to an infusion needle are provided in the both ends of the infusion tube 8 which has required length.

  As shown in FIG. 2, when the infusion tube 8 in which the upper positioning member 17 and the cassette member 18 as the lower positioning member are attached to the required positions is attached to the main body 1, the upper positioning member 17 is attached to the attachment portion. The cassette member 18 is attached by being inserted into the attachment portion 10 formed inside the main body 1, and the interval between the upper positioning member 17 and the cassette member 18 is a set interval. However, if the interval is short, the cassette member 18 may be slightly lowered and inserted into the mounting portion 10, and if the interval is long, after both positioning members are attached, It is only necessary to pull the infusion tube 8 up and down, and by doing so, the infusion tube 8 is placed on the surface of the peristaltic pump 7. It can be accurately positioned in direct contact. In short, the infusion tube 8 has no seam, and preferably only at least one of the positioning members can slide.

Further, as shown in FIGS. 5 and 6, the lock lever 4 is formed in a columnar shape having a narrow width and protruding upward, and protrudes upward from one side surface below the arm 25. And a lower handle 26 formed in the shape of a large and thin wall, and a shaft hole 27 is provided near the tip of the arm 25 to be attached to the door 3 so as to be rotatable (operable). A hook-like locking portion 28 is formed in a series so as to protrude inside the arm portion 25.

A lever hook 29 is rotatably mounted on the inner side of the lower end of the handle portion 26 at a position substantially corresponding to the position of the arm portion 25 via a shaft portion 30, and a coil spring 31 is attached to the shaft portion 30. 29 is always biased so as to be positioned in the horizontal direction. In other words, the lever hook 29 rotates from the horizontal position counterclockwise (downward), but does not rotate upward from the horizontal position. The inside of the hook portion of the lever hook 29 is formed in the inclined portion 32. Further, an inverted L-shaped projection 33 is provided in the lower end inside the handle portion 26 in a parallel state at the same level as the lever hook 29, and the interval between the projection 33 and the lever hook 29 is the same as that of the cassette member 18. It substantially corresponds to the length of the cassette clamp 18b, and the projection 33 and the lever hook 29 cause the cassette clamp 18b to move from the liquid stop position (closed state) to the liquid passage position (open state) and the cassette body 18a. It is slid from the liquid passing position to the liquid stopping position. The lock lever 4 is attached to the door 3 by a pin-shaped shaft 34 so as to be able to rotate.

The use of the infusion device of the present invention thus configured will be described.
First, as shown in FIG. 2, the door 3 of the main body 1 in the infusion device is opened and the infusion tube 8 is set. In this case, the positions of the upper positioning member 17 and the cassette member 18 which is the lower positioning member are set in advance based on the infusion device to be used, and the cassette clamp 18b of the cassette member 18 is also set to the liquid stop position (closed state). It is set and inserted into the determined attachment parts 9 and 10, respectively, and the door 3 is closed to hold the infusion tube 8 in a stable state, and further, the lock lever 4 is operated to be pushed down and locked. To secure the door 3 safely.

  When the lock lever 4 is operated to fix the door 3, as shown in FIGS. 7 to 10, when the handle portion 26 is pushed down, the hook-shaped locking portion 28 becomes the pin-shaped locking member 11. The lever hook 29 and the protrusion 33 provided on the inner side of the handle portion 26 are inserted into the main body 1 side, and one protrusion 33 contacts the inclined portion 23 of the cassette clamp 18b in the liquid stop position (closed state). The cassette clamp 18b is moved obliquely upward in the left direction (arrow b) in FIG. 9 by the pressing force (arrow a) by being pressed, and the insertion hole 21 and the insertion hole 20 of the cassette body 18a overlap. As a result, the closed state of the infusion tube 8 is released, and the infusion tube 8 is brought into an open state in which the medicinal solution flows. At the same time, the peristaltic pump 7 is operated to appropriately send the medicinal solution. The other lever hook 29 is inserted into the main body 1 as it is and is locked to the left end of the cassette clamp 18b that has moved, and as shown in FIGS. 8 and 10, a lock lever is used to open the door 3. 4 is removed, the lever hook 29 acts on the inclined portion 24 of the cassette clamp 18b, and is moved diagonally downward (arrow d) to the right by the pulling force (arrow c). Even if the infusion tube 8 is closed and the infusion tube 8 is removed from the main body 1, the free flow of the medicinal solution disappears. This is an extremely normal use.

  In any case, when the lock lever 4 is locked, the pressing force pushes the cassette clamp 18b through the protrusion 33 in the diagonal direction instead of the lateral direction, so the cassette clamp 18b moves smoothly and smoothly without any trouble. In addition, when the lock lever 4 is released, a pulling force is applied to the cassette clamp 18b in a diagonally forward direction, so that the cassette clamp 18b can be moved smoothly and smoothly to the closed state. In short, the moving force of the cassette clamp 18b to the open state and the closed state can be saved.

Further, if the infusion tube 8 in which the upper positioning member 17 and the cassette member 18 which is the lower positioning member are set in advance is different from the actual infusion device based on the infusion device scheduled to be used, the positioning member The positional relationship may not match. In such a case, conventionally, a new infusion device suitable for the infusion tube has to be brought in, or an infusion tube suitable for the infusion device has to be prepared from the beginning, and workability has been poor. . By the way, in this invention, since the positioning member of the infusion tube 8 is attached to the set interval so as to be fixed or slidable, it can be easily aligned and attached on the spot, or attached to the infusion tube 8. The cassette member 18 has a lock lever in a state in which the door 3 is closed regardless of whether the initial state before being mounted on the main body 1 is the liquid stop position (closed state) or the liquid passage position (open state). 4, the cassette clamp 18b is moved and the infusion tube 8 is inevitably opened. When the lock lever 4 is removed to open the door 3, the cassette clamp 18b is moved and the infusion tube 8 is moved. Will inevitably be closed.

  Even in an emergency use, the cassette member 18 attached to the infusion tube 8 can be fixed or partially slid at a set interval regardless of the initial state before the cassette member 18 is attached to the main body 1. As long as it is slid as appropriate, or a positioning member is attached to the attachment portions 9 and 10 and the tube 8 is pulled up and down, it can be brought into an appropriate state, and if the door 3 is closed and the lock lever 4 is locked. Even if the cassette member 18 is in the open state, the drip operation can be performed immediately, and even if the cassette member 18 is set in the open state, that is, the cassette clamp 18b is positioned on the left side, the lever hook 29 remains on the shaft 30. Since it is rotatably attached, its tip is inserted into the main body 1 while contacting the lower surface of the cassette clamp 18b, and the hook portion is It is to engage the inclined portion 24 of the set clamp 18b. That is, the inclined portion 32 inside the hook portion is hooked on the inclined portion 24 of the cassette clamp 18b when locked.

The infusion device according to the present invention includes at least a peristaltic pump 7, a main body portion 1 having attachment portions 9 and 10 for positioning and attaching an infusion tube 8, and a door 3 attached to the main body portion 1 so as to be openable and closable. Since the infusion tube 8 is a seamless tube, the infusion tube 8 can be fixed or slid at a set interval between the upper positioning member 17 attached to the tube and the cassette member 18 as the lower positioning member. By fixing, even if the mounting interval between the upper positioning member 17 and the cassette member 18 does not coincide with the mounting portions 9 and 10 of the main body 1 in the initial stage, it can be easily adjusted and mounted in the field. Therefore, workability is improved. Further, a lock lever 4 having an engaging portion 28, a lever hook 29, and a protrusion 33 on the inside is attached to the door 3, and the lock member 4 is locked and unlocked via the cassette member 18. Thus, in the infusion tube system in which the tube is cut for each conventional positioning member and connected via a connector, the infusion tube 8 can be opened and closed. When there is even a slight difference in dimensions between them, it becomes unusable, but in the present invention, it can be easily and accurately attached, and it can be used in an emergency situation, so it can be widely used as many infusion devices. is there.

DESCRIPTION OF SYMBOLS 1 Main body part 2 Control panel 3 Door 4 Lock lever 5 Input button 6 Display part 7 Peristaltic pump 8 Infusion tube 9, 10 Attachment part 11 Locking member 12 Socket part 13 Handle part 14 Holding part 15 Recessed part 16 Window part 17 Upper positioning member 18 cassette member 18a cassette body 18b cassette clamp 19 mounting part 20, 21 insertion hole 22 clamping part 23, 24 inclined part 25 arm part 26 handle 27 shaft hole 28 locking part 29 lever hook 30 shaft part 31 coil spring 32 inclined part 33 Projection 34 Pin-shaped shaft

Claims (3)

At least a peristaltic pump, a main body portion having an attachment portion for positioning and attaching the infusion tube, a door attached to the main body portion so as to be openable and closable , an inner locking portion, a lever hook, and a protrusion. An infusion device in which an infusion tube can be brought into an open state and a closed state via a cassette member by attaching a lock lever having the lock lever and a lock action and an unlocking action of the lock lever,
The infusion tube is one continuous tube seamless, the said cassette member of the upper positioning member and a lower positioning member mounted to the tube to the mounting portion of the main body portion slidably mounted to said main body portion An infusion device characterized by that . The infusion device according to claim 1, wherein the lock lever includes a columnar arm portion and a wall-shaped handle portion, and a lever hook and a protrusion are provided in parallel inside the handle portion. 3. The infusion device according to claim 1, wherein the lever hook is rotated in one direction and is spring-biased in a direction to return the rotation.

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