CN112933341B - Anesthesia device for pain department - Google Patents

Abstract

The invention provides an anesthesia device for pain department, comprising an anesthesia needle, an angle adjustment mechanism and a clamping and positioning mechanism; the angle adjustment mechanism includes a base, a first adjustment plate and a second adjustment plate, the base and the first adjustment plate are hingedly connected, and the first adjustment plate is hingedly connected. The lower side of an adjustment plate and the second adjustment plate are connected by a rotating shaft; the clamping and positioning mechanism has a clamping structure for clamping the anesthesia needle tube, and the clamping structure includes a base plate mounted on the second adjustment plate, and the middle of the base plate is provided with a clamping structure. There is a through hole for the anesthesia needle to pass through, four sliding rails are evenly distributed around the circumference of the through hole on the base plate, sliding blocks are arranged on the sliding rails, and one end of each sliding block close to the through hole is connected with a clamping part , the four clamping parts are used to jointly clamp the anesthesia needle. The present invention can be adjusted to an appropriate height and angle at any time, so as to be able to adapt to the needs of different injection angles, and avoid the situation that the medical staff shakes hands and causes the injection angle to be misplaced.

Description

Anesthesia device for pain department

technical field

The invention relates to the technical field of medical equipment, in particular to an anesthesia device for pain department.

Background technique

Pain has been listed by modern medicine as the fifth vital sign after respiration, pulse, blood pressure and body temperature. Some chronic pain is itself a disease (such as trigeminal neuralgia, post-herpetic neuralgia, etc.). Long-term local pain will form complex local pain syndrome or central pain, making ordinary pain very severe and difficult to treat, leading to dysfunction of various systems of the body, lowered immunity and various complications, even disability or disability. endanger the patient's life. In the treatment of pain department, anesthesia is one of the commonly used treatment methods.

In the prior art, an anesthesia puncture needle is required for clinical anesthesia puncture. The existing anesthesia puncture needle has neither a guiding device nor a power assist device, and the direction and strength are completely controlled by the medical staff. Due to the small size of the puncture needle, it is difficult to grasp the appropriate angle when puncturing a relatively hard tissue site or obliquely puncturing it, and the puncture wound is large, which is easy to cause more pain to the patient. At present, there are also puncture fixators that can solve these problems, but when adjusting the injection angle of the puncture needle and fixing the injection needle, experienced doctors basically rely on the feel of the needle. In practice, the puncture feel is a relatively unclear concept. Experience is related to the patient's physique and cannot be used as a formal operating guide. Even experienced surgeons will inevitably puncture the medial cortex and damage the spinal cord or nerve roots.

Therefore, how to provide an anesthesia device for pain department with a simple structure, which can easily adjust the injection angle and realize the fixation of the injection needle has become a technical problem to be solved by those skilled in the art.

SUMMARY OF THE INVENTION

In view of the deficiencies in the prior art, the present invention proposes an anesthesia device for pain department, including:

anesthesia needle;

The angle adjustment mechanism includes a base, a first adjustment plate and a second adjustment plate, the base and the first adjustment plate are hingedly connected, and the lower sides of the first adjustment plate and the second adjustment plate are connected by a rotating shaft;

A clamping and positioning mechanism, the clamping and positioning mechanism has a clamping structure for clamping the anesthesia needle tube, the clamping structure includes a base plate mounted on the second adjusting plate, and the middle part of the base plate is provided with a hole for the anesthesia needle tube to pass through. There are four sliding rails evenly distributed around the circumference of the through hole on the base plate, sliding blocks are arranged on the sliding rails, and two adjacent sliding blocks are connected by a connecting rod. The two ends of the connecting rod pass through two sliding blocks respectively; one end of each sliding block close to the through hole is connected with a clamping part, and the four clamping parts are used to jointly clamp the anesthesia needle; one of the sliding blocks is far away from the through hole One end is connected with a linear drive device.

In this way, the application only needs to easily rotate the first adjustment plate and the second adjustment plate, and can adjust to the appropriate height and angle at any time, so as to be able to adapt to the needs of different injection angles, and the anesthesia needle is fixed by the clamping and positioning mechanism, It avoids the situation where the medical staff is shaking and causes the injection angle to be misplaced, and the medical staff does not need to hold it by hand all the time, which reduces the labor intensity of the medical staff.

Further, two symmetrical first hinge ears are arranged on the base, a first hinge shaft is rotatably arranged between the two first hinge ears, and a connecting sleeve is sleeved on the first hinge shaft, and the The outer side of the connecting sleeve is fixedly connected with the first regulating plate.

In this way, it is not only convenient to adjust the injection angle, but also the first adjustment plate and the second adjustment plate are relatively stable after the angle is adjusted, reducing the possibility of accidental dislocation.

Further, the connecting rod includes a central shaft and a shaft sleeve, one end of the shaft sleeve is open and the other end is closed, and both ends of the central shaft are respectively slidably inserted into the inner cavity of the shaft sleeve from the open end of the shaft sleeve; Wherein, both ends of the shaft sleeve penetrate through the sliding block.

In this way, under the condition that one linear drive device can make the four sliding blocks move in the direction of the through hole simultaneously, the stability between two adjacent sliding blocks is also improved.

Further, the end of the central shaft protrudes outward to form a limiting portion, and the open end of the shaft sleeve protrudes inwardly to form a blocking portion, and the blocking portion cooperates with the limiting portion to restrict the central shaft from detaching from the shaft. set.

In this way, it is ensured that the shaft sleeve will not be separated from the central axis, so that the linkage between the four sliders can be performed stably and continuously.

Further, a chute is recessed on the base plate at the position between the corresponding two adjacent sliders, and the length direction of the chute is perpendicular to the length direction of the central axis; A sliding rod is connected to the side, and the lower end of the sliding rod is inserted in the sliding groove and can slide on the sliding groove.

Further, the rear end of the clamping part is connected to the slider, the rear part of the clamping part is formed into a column shape, and the front part of the clamping part is formed into a cone shape.

In this way, the front parts of the four clamping parts can achieve a better clamping effect.

Further, the linear drive device includes:

The cylinder body is a cylindrical structure with an open front end, the rear end of the cylinder body is fixedly connected with the second regulating plate, a piston rod is arranged inside the cylinder body, and the rear end of the piston rod is A piston is connected, the piston is slidably connected with the inner wall of the cylinder body, and the outer surface of the piston rod is provided with a multi-threaded thread; wherein, at the opening of the cylinder body, there is a multi-threaded thread matching with the piston rod. a screw sleeve, the front end of the piston rod passes through the screw sleeve and protrudes out of the cylinder, and the front end of the piston rod is fixedly connected with a turntable, and the front side of the turntable is rotatably connected with the slider;

A limit assembly, the limit assembly includes a connection sleeve and a limit sleeve; the connection sleeve is sleeved on the part of the piston rod located outside the cylinder, and the front end of the connection sleeve is connected to the The rear side of the turntable is connected in rotation; the limiting sleeve is sleeved on the connecting sleeve and can slide on the connecting sleeve along its axial direction; wherein, the front end of the limiting sleeve Several fixing rods are provided, and the axis of the fixing rod is parallel to the axis of the piston rod, and the front end of the screw sleeve is provided with a fixing hole matched with the fixing rod.

When the linear drive device of the present application is in use, since the cooperation between the fixing rod and the fixing hole will make the relative position of the limiting sleeve and the cylinder block fixed, it is necessary to use the axial direction between the limiting sleeve and the connecting sleeve first. Sliding fit, push the limit sleeve forward, so as to control the fixed rod on the limit sleeve away from the fixed hole on the cylinder body to achieve the purpose of unlocking; The cooperation of the threaded sleeve at the opening of the body enables the piston rod to slide along the inner wall of the cylinder, thereby controlling the movement of the slider; after the clamping parts of the four sliders complete the clamping of the anesthesia needle tube, loosen the limit sleeve , so that the fixing rod on the limit sleeve is inserted backward into the fixing hole on the cylinder to complete the locking; in this way, the locking and unlocking of the vertical telescopic device can be realized only by controlling the sliding of the limit sleeve, and at this time, The piston rod does not rotate with the screw sleeve, and the position of the turntable in the axial direction remains unchanged, that is, the present application can realize the unlocking of the linear drive device while ensuring that the clamping degree of the clamping part to the slider is not changed, and the The clamping degree of the clamping part to the slider is fixed to ensure the stability of clamping.

Further, the outer wall surface of the connecting sleeve is provided with a guide groove extending axially along the connecting sleeve, and the inner wall surface of the limiting sleeve is provided with a guide rod matched with the guiding groove; The connecting sleeve is also sleeved with a spring, the rear end of the spring is fixedly connected with the front end of the limiting sleeve, and the front end of the spring is fixedly connected with the rear side of the turntable; The side is provided with an installation groove matching the outer edge of the front end of the connection sleeve, and the front end of the connection sleeve is inserted in the installation groove.

Further, a handle is provided on the outer wall of the limiting sleeve, and the handle is arranged along the radial direction of the limiting sleeve.

In this way, when the linear drive device needs to be unlocked, push the limit sleeve forward to compress the spring; when the linear drive device needs to be locked, loosen the limit sleeve, and the limit sleeve will return to the spring. The fixing rod can be inserted into the fixing hole faster and more conveniently under the force to complete the locking; moreover, the connection between the turntable and the connecting sleeve can be realized, and at the same time, rotating the turntable will not drive the connecting sleeve to rotate together.

Further, the base includes a bowl-shaped frame, a flexible sealing frame and a suction cup, a flexible sealing frame is installed on the lower side of the bowl-shaped frame, a suction cup is evenly installed in the flexible sealing frame along its circumferential direction, and the side of the flexible sealing frame facing away from the suction cup is installed. connected to the first adjustment plate.

In this way, by fixing the base in a proper position by the suction cup, the relative position of the base and the human body will not change greatly, so that the overall structure is more stable in use.

Description of drawings

In order to describe the specific embodiments of the present invention more clearly, the accompanying drawings required for the specific embodiments will be briefly introduced below. In all the drawings, elements or sections are not necessarily drawn to actual scale.

1 is a schematic structural diagram of an anesthesia device for pain department provided by the present invention;

Fig. 2 is the structural representation of the base provided by the present invention;

3 is a schematic structural diagram of an angle adjustment mechanism provided by the present invention;

4 is a schematic structural diagram of a clamping and positioning mechanism provided by the present invention;

5 is a schematic structural diagram of a connecting rod in the clamping and positioning mechanism provided by the present invention;

6 is a schematic structural diagram of a linear drive device provided by the present invention;

Fig. 7 is in Fig. 6, the sectional structure schematic diagram of the screw sleeve part;

FIG. 8 is a schematic structural diagram of the limiting assembly provided by the present invention.

Reference number:

1- Anesthesia needle;

2-angle adjustment mechanism, 21-base, 211-bowl frame, 212-flexible sealing frame, 213-suction cup, 22-first adjustment plate, 23-second adjustment plate, 24-first hinge ear, 25-th a connecting sleeve;

3-Clamping and positioning mechanism, 30-Clamping structure, 301-Substrate, 302-Slide rail, 303-Slider, 304-Link, 3041-Central shaft, 3042-Sleeve, 305-Clamping part, 306- Chute, 307-Slide bar;

4-Linear drive device, 41-Cylinder block, 42-Limiting assembly, 421-Connecting sleeve, 422-Limiting sleeve, 423-Fixing rod, 424-Fixing hole, 425-Guiding groove, 426-Guiding rod, 427-spring, 428-handle, 43-piston rod, 44-nut, 45-turntable.

Detailed ways

Embodiments of the technical solutions of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only used to more clearly illustrate the technical solutions of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

Example: As shown in FIG. 1 , an anesthesia device for pain department includes an anesthesia needle 1 , an angle adjustment mechanism 2 and a clamping and positioning mechanism 3 .

As shown in FIGS. 1 and 3 , the angle adjustment mechanism 2 includes a base 21 , a first adjustment plate 22 and a second adjustment plate 23 , the base 21 and the first adjustment plate 22 are hingedly connected, and the first adjustment plate 22 and The lower side of the second regulating plate 23 is connected by a rotating shaft.

As shown in FIG. 1 and FIG. 4 , the clamping and positioning mechanism 3 has a clamping structure 30 for clamping the anesthesia needle tube 1 . The clamping structure 30 includes a base plate 301 mounted on the second adjusting plate 23 . The middle of the base plate 301 is provided with a through hole for the anesthesia needle tube 1 to pass through. There are four sliding rails 302 evenly distributed around the through hole on the base plate 301, and sliding blocks are arranged on the sliding rails 302. 303, two adjacent sliders 303 are connected by a connecting rod 304, two ends of the connecting rod 304 respectively pass through the two sliders 303; each slider 303 is connected with a clamping portion 305 at one end close to the through hole, The four clamping parts 305 are used to jointly clamp the anesthesia needle tube 1 ; a linear driving device 4 is connected to one end of the sliding block 303 away from the through hole.

In this way, the application only needs to easily rotate the first adjustment plate and the second adjustment plate, and can adjust to the appropriate height and angle at any time, so as to be able to adapt to the needs of different injection angles, and the anesthesia needle is fixed by the clamping and positioning mechanism, It avoids the situation where the medical staff is shaking and causes the injection angle to be misplaced, and the medical staff does not have to hold it by hand all the time, which reduces the labor intensity of the medical staff.

Wherein, as shown in FIG. 3 , two symmetrical first hinge ears 24 are provided on the base 21 , and a first hinge shaft is rotatably disposed between the two first hinge ears 24 , and the first hinge shaft is arranged on the base 21 . A connecting sleeve 25 is set in the sleeve, and the outer side of the connecting sleeve 25 is fixedly connected with the first regulating plate 22 .

In this way, it is not only convenient to adjust the injection angle, but also the first adjustment plate and the second adjustment plate are relatively stable after the angle is adjusted, reducing the possibility of accidental dislocation.

4 and 5 , the connecting rod 304 includes a central shaft 3041 and a shaft sleeve 3042. One end of the shaft sleeve 3042 is open and the other end is closed. The open end of the shaft sleeve 3042 is slidably inserted into the inner cavity of the shaft sleeve 3042 ; the two ends of the shaft sleeve 3042 penetrate the slider 303 . The end of the central shaft 3041 protrudes outward to form a limiting portion (not shown), and the opening end of the shaft sleeve 3042 protrudes inwardly to form a blocking portion (not shown). The blocking portion and the limiting portion It is matched to restrict the central shaft 3041 from being separated from the shaft sleeve, which ensures that the shaft sleeve will not be separated from the central shaft, so that the linkage between the four sliders can be performed stably and continuously. Wherein, a chute 306 is recessed on the base plate 301 at the position between the corresponding two adjacent sliders 303, and the longitudinal direction of the chute 306 is perpendicular to the longitudinal direction of the central axis 3041; A sliding rod 307 is connected to the lower side of the shaft 3041 , and the lower end of the sliding rod 307 is inserted into the sliding groove 306 and can slide on the sliding groove 306 .

In this way, under the condition that one linear drive device can make the four sliding blocks move in the direction of the through hole simultaneously, the stability between two adjacent sliding blocks is also improved.

As shown in FIG. 4 , the rear end of the clamping portion 305 is connected to the slider 303 , the rear portion of the clamping portion 305 is formed into a column shape, and the front portion of the clamping portion 305 is formed into a cone shape. In this way, the front parts of the four clamping parts can achieve a better clamping effect.

Wherein, as shown in FIG. 6 and FIG. 7 , the linear drive device 4 includes a cylinder block 41 and a limit assembly 42 . The cylinder 41 is a cylindrical structure with an open front end, and the rear end of the cylinder 41 is fixedly connected to the second adjusting plate 23 . A piston rod 43 is arranged inside the cylinder 41 . The piston rod 43 The rear end is connected with a piston (not shown), the piston is slidably connected with the inner wall of the cylinder 41, and the outer surface of the piston rod 43 is provided with multiple threads; There is a screw sleeve 44 matched with the multi-thread of the piston rod 43, the front end of the piston rod 43 passes through the screw sleeve 44 and protrudes out of the cylinder 41, and the front end of the piston rod 43 is fixed A turntable 45 is connected, and the front side of the turntable 45 is rotatably connected with the slider.

As shown in FIGS. 6 , 7 and 8 , the limiting assembly 42 includes a connecting sleeve 421 and a limiting sleeve 422 ; the connecting sleeve 421 is sleeved on the piston rod 43 and located on the cylinder 41 . On the outer part, and the front end of the connecting sleeve 421 is rotatably connected with the rear side of the turntable 45 . The limiting sleeve 422 is sleeved on the connecting sleeve 421 and can slide on the connecting sleeve 421 along its axial direction; wherein, the front end of the limiting sleeve 422 is provided with several fixing rods 423 , and the axis of the fixing rod 423 is parallel to the axis of the piston rod 43 , and the front end of the screw sleeve 44 is provided with a fixing hole 424 matched with the fixing rod 423 .

When the linear drive device of the present application is in use, since the cooperation between the fixing rod and the fixing hole will make the relative position of the limiting sleeve and the cylinder block fixed, it is necessary to use the axial direction between the limiting sleeve and the connecting sleeve first. Sliding fit, push the limit sleeve forward, so as to control the fixed rod on the limit sleeve away from the fixed hole on the cylinder body to achieve the purpose of unlocking; The cooperation of the threaded sleeve at the opening of the body enables the piston rod to slide along the inner wall of the cylinder, thereby controlling the movement of the slider; after the clamping parts of the four sliders complete the clamping of the anesthesia needle tube, loosen the limit sleeve , so that the fixing rod on the limit sleeve is inserted backward into the fixing hole on the cylinder to complete the locking; in this way, the locking and unlocking of the vertical telescopic device can be realized only by controlling the sliding of the limit sleeve, and at this time, The piston rod does not rotate with the screw sleeve, and the position of the turntable in the axial direction remains unchanged, that is, the present application can realize the unlocking of the linear drive device while ensuring that the clamping degree of the clamping part to the slider is not changed, and the The clamping degree of the clamping part to the slider is fixed to ensure the stability of clamping.

Wherein, as shown in FIGS. 6 , 7 and 8 , the outer wall surface of the connecting sleeve 421 is provided with a guide groove 425 extending axially along the connecting sleeve 421 . A guide rod 426 that cooperates with the guide groove 425 is arranged on the wall surface; a spring 427 is also sleeved on the connecting sleeve 421 , and the rear end of the spring 427 is fixedly connected with the front end of the limiting sleeve 421 . The front end of the spring 427 is fixedly connected to the rear side of the turntable 45; the rear side of the turntable 45 is provided with a mounting groove (not shown) that matches the front end outer edge of the connecting sleeve 421. The front end of the cylinder 421 is inserted into the installation groove; wherein, a handle 428 is provided on the outer wall of the limiting sleeve 421 , and the handle 428 is arranged along the radial direction of the limiting sleeve 421 .

In this way, when the linear drive device needs to be unlocked, push the limit sleeve forward to compress the spring; when the linear drive device needs to be locked, loosen the limit sleeve, and the limit sleeve will return to the spring. The fixing rod can be inserted into the fixing hole faster and more conveniently under the force to complete the locking; moreover, the connection between the turntable and the connecting sleeve can be realized, and at the same time, rotating the turntable will not drive the connecting sleeve to rotate together.

Wherein, as shown in FIG. 2 , the base 21 includes a bowl-shaped frame 211 , a flexible sealing frame 212 and a suction cup 213 , a flexible sealing frame 212 is installed on the lower side of the bowl-shaped frame 211 , and the inside of the flexible sealing frame 212 is uniform along its circumference. A suction cup 213 is installed, and the side of the flexible sealing frame 212 facing away from the suction cup 213 is connected to the first regulating plate 22 .

In this way, by fixing the base in a proper position by the suction cup, the relative position of the base and the human body will not change greatly, so that the overall structure is more stable in use.

The above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that the foregoing embodiments can still be used for The recorded technical solutions are modified, or some or all of the technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and should be included in the The invention is within the scope of the claims and description.

Claims (8)

1. An anesthesia apparatus for pain management, comprising:

an anesthetic needle tube;

the angle adjusting mechanism comprises a base, a first adjusting plate and a second adjusting plate, wherein the base is hinged with the first adjusting plate, and the lower sides of the first adjusting plate and the second adjusting plate are connected through a rotating shaft;

the clamping and positioning mechanism is provided with a clamping structure for clamping an anesthetic needle tube, the clamping structure comprises a base plate arranged on a second adjusting plate, a through hole for the anesthetic needle tube to pass through is formed in the middle of the base plate, four sliding rails are uniformly distributed on the base plate around the through hole, sliding blocks are arranged on the sliding rails in a sliding mode, two adjacent sliding blocks are connected through a connecting rod, and two ends of the connecting rod respectively penetrate through the two sliding blocks; one end of each sliding block close to the through hole is connected with a clamping part, and the four clamping parts are used for clamping the anesthetic needle tube together; one end of one of the slide blocks, which is far away from the through hole, is connected with a linear driving device;

the connecting rod comprises a central shaft and a shaft sleeve, one end of the shaft sleeve is open, the other end of the shaft sleeve is closed, and two ends of the central shaft are respectively inserted into an inner cavity of the shaft sleeve in a sliding mode from the open end of the shaft sleeve; wherein, both ends of the shaft sleeve penetrate through the sliding block; the end part of the central shaft protrudes outwards to form a limiting part, the opening end of the shaft sleeve protrudes inwards to form a blocking part, and the blocking part and the limiting part are matched to limit the central shaft to be separated from the shaft sleeve.

2. The anesthesia apparatus for the pain department according to claim 1, wherein the base is provided with two symmetrical first hinge lugs, a first hinge shaft is rotatably arranged between the two first hinge lugs, the first hinge shaft is sleeved with a connecting sleeve, and the outer side of the connecting sleeve is fixedly connected with the first adjusting plate.

3. The anesthesia apparatus for the pain department according to claim 1, wherein a sliding groove is concavely provided at a position between two corresponding adjacent sliding blocks on the base plate, and a longitudinal direction of the sliding groove is perpendicular to a longitudinal direction of the central shaft; the lower side of the central shaft is connected with a sliding rod, and the lower end of the sliding rod is inserted into the sliding groove and can slide on the sliding groove.

4. The anesthesia apparatus for the pain department according to claim 1, wherein the rear end of the grip portion is connected to the slider, and the rear portion of the grip portion is formed in a cylindrical shape and the front portion of the grip portion is formed in a conical shape.

5. The anesthesia apparatus for the pain department according to claim 1, wherein the linear driving means comprises:

the cylinder body is of a cylindrical structure with an opening at the front end, the rear end of the cylinder body is fixedly connected with the second adjusting plate, a piston rod is arranged inside the cylinder body, the rear end of the piston rod is connected with a piston, the piston is connected with the inner wall of the cylinder body in a sliding manner, and multiple threads are distributed on the outer surface of the piston rod; the opening of the cylinder body is provided with a threaded sleeve matched with the multi-thread of the piston rod, the front end of the piston rod penetrates through the threaded sleeve and extends out of the cylinder body, the front end of the piston rod is fixedly connected with a rotary table, and the front side of the rotary table is rotatably connected with a sliding block;

the limiting assembly comprises a connecting sleeve and a limiting sleeve; the connecting sleeve is sleeved on the part of the piston rod, which is positioned outside the cylinder body, and the front end of the connecting sleeve is rotationally connected with the rear side of the turntable; the limiting sleeve is sleeved on the connecting sleeve and can slide on the connecting sleeve along the axial direction of the connecting sleeve; the front end of the limiting sleeve is provided with a plurality of fixing rods, the axes of the fixing rods are parallel to the axis of the piston rod, and the front end of the threaded sleeve is provided with fixing holes matched with the fixing rods.

6. The anesthesia apparatus for the pain department as claimed in claim 5, wherein the outer wall surface of the connecting sleeve is provided with a guide groove extending along the axial direction of the connecting sleeve, and the inner wall surface of the limiting sleeve is provided with a guide rod matching with the guide groove; the connecting sleeve is also sleeved with a spring, the rear end of the spring is fixedly connected with the front end of the limiting sleeve, and the front end of the spring is fixedly connected with the rear side of the turntable; the rear side of the turntable is provided with a mounting groove matched with the outer edge of the front end of the connecting sleeve, and the front end of the connecting sleeve is inserted into the mounting groove.

7. The anesthesia apparatus for the pain department as claimed in claim 5, wherein a handle is provided on an outer wall surface of said limiting sleeve, said handle being provided along a radial direction of said limiting sleeve.

8. The anesthesia apparatus for the pain department according to claim 1, wherein the base comprises a bowl-shaped frame, a flexible sealing frame and suction cups, the flexible sealing frame is mounted on the lower side of the bowl-shaped frame, the suction cups are uniformly mounted in the flexible sealing frame along the circumferential direction of the flexible sealing frame, and one side of the flexible sealing frame, which is far away from the suction cups, is connected with the first adjusting plate.

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