CN113144370B

CN113144370B - Quantitative injection device for operation local anesthesia medicament

Info

Publication number: CN113144370B
Application number: CN202110391841.XA
Authority: CN
Inventors: 陈玉芬; 张志娟; 王丹; 刘发生; 张仁生; 李玉兰
Original assignee: Minqin County People's Hospital
Current assignee: Minqin County People's Hospital
Priority date: 2021-04-13
Filing date: 2021-04-13
Publication date: 2023-04-07
Anticipated expiration: 2041-04-13
Also published as: CN113144370A

Abstract

The invention discloses a quantitative injection device of a medicine for local anesthesia in an operation, which relates to the technical field of medical auxiliary equipment and comprises a bottom plate, an electric telescopic rod, a cantilever and an injection mechanism, wherein the top wall of the bottom plate is fixedly provided with the electric telescopic rod, the side wall of the electric telescopic rod is fixedly provided with a driving motor, the driving motor is fixedly arranged on the top wall of the bottom plate, the side wall of the electric telescopic rod is fixedly provided with a fixed seat, the side wall of the fixed seat is provided with a mounting plate through a bolt, the side wall of the mounting plate is fixedly provided with the cantilever, the end part of the cantilever is provided with the injection mechanism, the cantilever is adopted to drive the injection mechanism to move, the multidimensional movement of the injection mechanism is realized, the injection process is more stable, the driving mechanism is arranged in the injection mechanism, the driving mechanism adopts an air pump as driving force, the medical personnel can conveniently control the injection rate of the medicine, and a pair of auxiliary cylinders is symmetrically arranged on two sides of a needle cylinder, so that different medicine liquids can be injected into the same position of a patient.

Description

Quantitative injection device for operation local anesthesia medicament

Technical Field

The invention relates to the technical field of medical auxiliary equipment, in particular to a quantitative injection device for a local anesthetic for an operation.

Background

Local anesthesia, also known as regional anesthesia, refers to the application of local anesthetics to body parts under the conscious state of the patient, so that the sensory nerve conduction function of a certain part of the body is temporarily blocked, the motor nerve conduction remains intact or is blocked to different degrees at the same time, the blocking should be completely reversible without any tissue damage, and the local anesthesia has the advantages of simplicity, convenience, safety, patient conscious, few complications and little influence on the physiological function of the patient.

When part of anesthetic is injected, because the working parts are different, the needed anesthetic is not only the same, and some patients may have severe stabbing pain or burning pain, and in order to relieve the pain, before part of anesthetic is injected, sterile normal saline is pre-injected locally, so as to relieve the pain of the patients, the patients need to be punctured for multiple times, on one hand, the multiple puncturing operation can bring great pain to the patients, on the other hand, the multiple puncturing operation cannot accurately ensure that the injection positions are the same, so that the relieving effect of the normal saline is greatly reduced, meanwhile, in the existing anesthetic injection device, the anesthetic is injected by pushing the piston to press in, because the diffusion speed of the anesthetic is slow and multiple injections are needed, when medical personnel hold the injector to inject, when the piston rod is pushed, the hand stability is poor, the feeding amount is not easy to control, and the shaking is easy to generate, so that the pain of the patients is increased.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide a quantitative injection device for a local anesthetic for operation, which realizes the injection of liquid medicine for multiple times at the same puncture position and greatly relieves the pain of a patient.

In order to achieve the purpose, the invention provides the following technical scheme: including bottom plate, electric telescopic handle, cantilever and injection mechanism, fixed mounting has electric telescopic handle on the roof of bottom plate to fixed mounting has driving motor on electric telescopic handle's the lateral wall, and driving motor fixed mounting is on the roof of bottom plate, and fixed mounting has the fixing base on electric telescopic handle's the lateral wall simultaneously, and the mounting panel is installed to the bolt on the lateral wall of fixing base, and fixed mounting has the cantilever on the lateral wall of mounting panel, and wherein injection mechanism is installed to the tip of cantilever.

As a further scheme of the invention: the injection mechanism comprises a fixing column, a driving column and a needle cylinder, wherein a fixing groove is formed in the right side end of the fixing column, the driving column is slidably mounted in the fixing groove, a push rod is slidably mounted on the left side wall of the fixing groove, the right side end of the push rod is fixedly mounted on the side wall of the driving column, a driving groove is formed in the driving rod, a driving mechanism is arranged in the driving groove, the needle cylinder is sleeved in the driving groove, a plurality of mounting holes are formed in the end portion of the left side of the fixing column, and the fixing column is mounted at the end portion of a cantilever through a mounting hole bolt.

As a further scheme of the invention: the driving mechanism comprises a fixed pipe, a telescopic pipe and a push block, wherein the fixed pipe is fixedly arranged on the left side wall of the driving groove, the other end of the fixed pipe is fixedly arranged inside the partition plate, the partition plate is fixedly arranged on the side wall of the driving groove, the fixed pipe is positioned at one end of the partition plate and fixedly connected with the telescopic pipe, the other end of the telescopic pipe is fixedly arranged on the left side wall of the push block, an air outlet pipe and an air inlet pipe are symmetrically arranged on the upper side wall and the lower side wall of the fixed pipe, the other end of the air inlet pipe is connected with a first one-way valve, the first one-way valve is fixedly arranged on the bottom wall of the fixed column, the other end of the first one-way valve is connected with an air pump through a connecting air pipe, the air pump is fixedly arranged on the top wall of the bottom plate, the other end of the air outlet pipe extends out of the side wall of the fixed column, the extending end of the air outlet pipe is connected with a second one-way valve, and the second one-way valve is fixedly arranged on the top wall of the fixed column.

As a further scheme of the invention: the bottom fixed mounting of fixed column has positioning mechanism, and positioning mechanism includes third check valve and inflater, and wherein third check valve fixed mounting is on the left side wall of riser, riser fixed mounting is on the diapire of fixed column, and fixed mounting has the inflater on the right side wall of riser, and the gas outlet and the third check valve intercommunication of inflater are in the same place, and the end of giving vent to anger of third check valve passes through the collecting pipe and links together with the connecting gas pipe simultaneously, has seted up the observation window on the outer wall of fixed column simultaneously, and the observation window is located actuating mechanism directly over.

As a further scheme of the invention: the utility model discloses a syringe, including cylinder, division board, piston, connecting rod, push pedal, a pair of baffle box, a pair of conduit, the right side end of two baffle boxes is in the same place through converging the groove intercommunication, converge the other end of groove and syringe needle intercommunication together, syringe needle fixed mounting is on the right-hand member lateral wall of cylinder, and two supplementary cylinders are installed to the symmetry on the upper and lower both sides wall of cylinder, the inside slidable mounting of supplementary cylinder has the stripper bar, wherein the one end fixed mounting that the stripper bar was kept away from to supplementary cylinder has the catheter, fixed mounting is close to on the lateral wall of supplementary cylinder on the fourth check valve simultaneously, the output and the liquid storage chamber intercommunication of fourth check valve are in the same place, and the input fixed mounting of fourth check valve has chucking mechanism, the fourth check valve passes through chucking mechanism and links together with the catheter.

As a further scheme of the invention: the chucking mechanism includes a connecting cylinder, a convex block and a clamping rod, connecting cylinder fixed mounting is at the input of fourth check valve, wherein the internal diameter of connecting cylinder is the same with the external diameter of catheter, left side groove has been seted up on the left side inner wall of connecting cylinder simultaneously, the inside slidable mounting in left side groove has the convex block, wherein the convex block passes through extrusion spring and left side groove intercommunication together, and first draw-in groove has been seted up to the symmetry on the left side wall of catheter, the diameter of first draw-in groove is the same with the diameter of convex block, right through-hole has been seted up on the right side inner wall of connecting cylinder simultaneously, right through-hole and left side groove are on same straight line, and slidable mounting has the clamping rod in the right through-hole, the right-hand member fixed mounting of clamping rod has the arm-tie, the arm-tie links together through the outer wall of a pair of take-up spring and connecting cylinder, wherein the symmetry has seted up the second draw-in groove on the right side outer wall of catheter, the diameter of second draw-in groove and clamping rod is the same.

As a further scheme of the invention: the inside fixed mounting of fixed pipe has the telescopic link, and the other end of telescopic link links together with the lateral wall of ejector pad, and the winding has round reset spring on the outer wall of flexible pipe simultaneously, and reset spring's both ends are fixed mounting respectively on the lateral wall of ejector pad and baffle.

As a further scheme of the invention: fixed mounting has a plurality of sliders on the outer wall of drive post, and slider slidable mounting has seted up the internal thread on the tip inner wall in drive groove simultaneously on the lateral wall of fixed slot for the screw thread installation cylinder to the inside fixed mounting in drive groove has the stopper, and the through-hole has been seted up to the inside of stopper, and the diameter of through-hole is the same with the diameter of ejector pad.

As a further scheme of the invention: the needle head is kept away from to the cylinder on a lateral wall fixed external screw thread that has seted up, external screw thread and internal thread match each other, the inside slidable mounting of guiding gutter has the sealing rod simultaneously, the tip of sealing rod stretches out from the lateral wall of cylinder.

As a still further scheme of the invention: the utility model discloses a wheel, including mounting panel, bracing piece, electric telescopic handle, universal wheel, self-locking function, the diapire of mounting panel is last to rotate and to be installed the bracing piece, and the other end fixed mounting of bracing piece is on electric telescopic handle's outer wall to install a plurality of universal wheels on the diapire of bottom plate, the wheel that has self-locking function is chooseed for use to the universal wheel.

Compared with the prior art, the invention has the beneficial effects that: the invention is provided with a cantilever, an injection mechanism is fixedly arranged at the end part of the cantilever, the cantilever is adopted to drive the injection mechanism to move and fix, the invention is suitable for fixing requirements of different anesthesia positions, and the cantilever is adopted to replace the traditional handheld fixing mode, the injection process is more stable, the device is prevented from shaking, meanwhile, a needle cylinder is driven by a driving mechanism, the driving mechanism adopts an air pump as driving force, and is convenient for medical personnel to control the injection rate of liquid medicine.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the injection mechanism of the present invention.

Fig. 3 is a schematic view of the driving column structure of the present invention.

Fig. 4 is a schematic view of the internal mechanism of the driving mechanism of the present invention.

Fig. 5 is a schematic view of the syringe structure according to the present invention.

Fig. 6 is a partial enlarged view of the invention at a.

As shown in the figure: 1. a bottom plate, 2, an electric telescopic rod, 3, a fixed seat, 4, a mounting plate, 5, a cantilever, 6, a fixed column, 7, a driving column, 8, a syringe, 9, an air pump, 10, a driving motor, 11, a universal wheel, 12, a supporting rod, 13, a connecting air pipe, 14, a fixed groove, 15, a mounting hole, 16, a push rod, 17, an auxiliary cylinder, 18, a needle head, 19, a driving groove, 20, a slide block, 21, a fixed pipe, 22, an extension pipe, 23, a push block, 24, a clapboard, 25, an air outlet pipe, 26, an air inlet pipe, 27, a limiting block, 28, a first one-way valve, 29, a second one-way valve, 30, an air filter, 31, an internal thread, 32 and a vertical plate, 33, a third check valve, 34, a collecting pipe, 35, an inflator, 36, an expansion rod, 37, a partition plate, 38, a fourth check valve, 39, a liquid guide pipe, 40, a piston, 41, a connecting rod, 42, a push plate, 43, an auxiliary rod, 44, a limiting block, 45, a sliding groove, 46, an extrusion rod, 47, a flow guide groove, 48, a collecting groove, 49, a sealing rod, 50, a connecting cylinder, 51, a left side groove, 52, a bump, 53, an extrusion spring, 54, a first clamping groove, 55, a right through hole, 56, a clamping rod, 57, a pull plate, 58, a tensioning spring, 59, a second clamping groove, 60, an observation window, 61, a return spring, 62 and external threads.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 6, in an embodiment of the present invention, a quantitative injection device for local anesthesia in an operation includes a bottom plate 1, an electric telescopic rod 2, a cantilever 5 and an injection mechanism, the top wall of the bottom plate 1 is fixedly provided with the electric telescopic rod 2, the side wall of the electric telescopic rod 2 is fixedly provided with a driving motor 10, the driving motor 10 is fixedly provided on the top wall of the bottom plate 1, the driving motor 10 controls the electric telescopic rod 2 to perform telescopic motion for adjusting the height of the device, meanwhile, the side wall of the electric telescopic rod 2 is fixedly provided with a fixing base 3, the side wall of the fixing base 3 is provided with a mounting plate 4 by a bolt, and the side wall of the mounting plate 4 is fixedly provided with the cantilever 5, wherein the end of the cantilever 5 is provided with the injection mechanism, the cantilever 5 is adopted to drive the injection mechanism to perform motion, so as to achieve multidimensional motion of the injection mechanism, thereby satisfying injection requirements of different parts, the applicability is stronger, meanwhile, the bottom wall of the mounting plate 4 is rotatably provided with a support rod 12, the other end of the support rod 12 is fixedly provided on the outer wall of the electric telescopic rod 2, the mounting plate 12 is used for assisting in supporting the mounting plate 4, thereby increasing the stability of the injection mechanism, and the universal wheels 11 are provided with a plurality of universal wheels 11, thereby facilitating the use of the self-locking device, and satisfying different scenes of the self-locking device.

Referring to fig. 2, it can be seen that: injection mechanism includes fixed column 6, drive post 7 and cylinder 8, wherein fixed slot 14 has been seted up to the right side end of fixed column 6, drive post 7 slidable mounting is in fixed slot 14, slidable mounting has push rod 16 on the left side wall of fixed slot 14 simultaneously, the right side end fixed mounting of push rod 16 is on the lateral wall of drive post 7, it carries out horizontal motion to drive actuating lever 7 through push rod 16, and what the inside of actuating lever 7 was seted up has drive slot 19, be provided with actuating mechanism in the drive slot 19, wherein cylinder 8 covers the inside at drive slot 19, carry out the injection operation through actuating mechanism drive cylinder 8, compare with traditional manual injection mode, the injection mode that adopts actuating mechanism has made things convenient for medical personnel to control the liquid medicine quantity, more accurate of quantity, a plurality of mounting holes 15 have been seted up to the left side tip of fixed column 6 simultaneously, fixed column 6 passes through mounting hole 15 bolt-mounting at the tip of cantilever 5.

The driving mechanism comprises a fixed pipe 21, an extension pipe 22 and a push block 23, wherein the fixed pipe 21 is fixedly arranged on the left side wall of a driving groove 19, the other end of the fixed pipe 21 is fixedly arranged inside a partition plate 24, the partition plate 24 is fixedly arranged on the side wall of the driving groove 19, the fixed pipe 21 is positioned at one end of the partition plate 24 and fixedly connected with the extension pipe 22, the other end of the extension pipe 22 is fixedly arranged on the left side wall of the push block 23, an air outlet pipe 25 and an air inlet pipe 26 are symmetrically arranged on the upper side wall and the lower side wall of the fixed pipe 21, the other end of the air inlet pipe 26 is connected with a first one-way valve 28, the first one-way valve 28 is fixedly arranged on the bottom wall of a fixed column 6, the other end of the first one-way valve 28 is connected with an air pump 9 through a connecting air pipe 13, the air outlet pipe 9 is fixedly arranged on the top wall of the bottom plate 1, the other end of the air outlet pipe 25 extends out of the side wall of the fixed column 6, the second one-way valve 29 is connected with the top wall of the fixed column, the top wall of the fixed pipe 28 is fixedly arranged on the top wall of the fixed column 6, the fixed pipe 21, the extension pipe 36 is connected with a push block 23, the outer wall of the push block 23, a return spring 61 is connected with the extension pipe 23, and a return spring 61 for returning the extension pipe 23, and a return spring for returning the extension spring 23, and a return spring 61 for returning the extension spring 23, and a return spring for returning the extension of the extension pipe 23; in the working process, the air pump 9 is started to inject air into the fixed tube 21 through the first one-way valve 28, the second one-way valve 29 is closed at the moment, so that the push block 23 is driven to extend towards the right side to push the needle cylinder 8 to perform injection operation, after the injection is completed, the air pump 9 is stopped, the push block 23 resets under the action of the reset spring 61, at the moment, the air in the fixed tube 21 is discharged from the second one-way valve 29, and the reset of the push block 23 is realized.

Preferably, fixed mounting has a plurality of sliders 20 on the outer wall of actuating column 7, slider 20 slidable mounting is on the lateral wall of fixed slot 14, realize the slidable mounting to actuating column 7 through slider 20, drive and seted up internal thread 31 on the tip inner wall of groove 19 simultaneously, be used for threaded mounting syringe 8, and the inside fixed mounting of actuating groove 19 has stopper 27, the through-hole has been seted up to stopper 27's inside, the diameter of through-hole is the same with the diameter of ejector pad 23, shelter from the protection to actuating mechanism through stopper 27, avoid because operating personnel's maloperation, and cause actuating mechanism's damage.

The bottom of the fixed column 6 is fixedly provided with a positioning mechanism, the positioning mechanism comprises a third one-way valve 33 and an inflator 35, the third one-way valve 33 is fixedly installed on the left side wall of a vertical plate 32, the vertical plate 32 is fixedly installed on the bottom wall of the fixed column 6, the inflator 35 is fixedly installed on the right side wall of the vertical plate 32, an air outlet of the inflator 35 is communicated with the third one-way valve 33, an air outlet end of the third one-way valve 33 is connected with a connecting air pipe 13 through a confluence pipe 34, an observation window 60 is formed in the outer wall of the fixed column 6, the observation window 60 is located right above the driving mechanism, before a driving process, an operator injects air into the fixed pipe 21 through the inflator 35 to drive the push block 23 to move horizontally, the push block 23 is contacted with the needle cylinder 8, auxiliary positioning of the driving mechanism is achieved, driving work of the driving mechanism by a subsequent air pump 9 is facilitated, and quantitative injection is more facilitated.

Wherein, the inside of the syringe 8 is fixedly provided with a partition plate 37, the syringe is divided into an upper liquid storage cavity and a lower liquid storage cavity by the partition plate 37, the liquid storage cavities are internally and slidably provided with pistons 34, the left side wall of the piston 34 is fixedly provided with a connecting rod 41, the other end of the connecting rod 41 extends out of the side wall of the syringe 8, the extending ends of the two connecting rods 41 are connected together by a push plate 42, the pistons 34 are driven by the push plate 42 to move horizontally, a pair of material guide grooves 47 are arranged in one side wall of the syringe 8 far away from the connecting rod 41, the right side ends of the two material guide grooves 47 are communicated together by a confluence groove 48, the other end of the confluence groove 48 is communicated with the syringe needle 18, the syringe needle 18 is fixedly arranged on the right side wall of the syringe 8, and the upper and lower two side walls of the syringe 8 are symmetrically provided with two auxiliary barrels 17, the inside slidable mounting of supplementary section of thick bamboo 17 has the extrusion stem 46, wherein the one end fixed mounting that supplementary section of thick bamboo 17 kept away from extrusion stem 46 has catheter 39, the horizontal motion through extrusion stem 46 realizes advancing of supplementary section of thick bamboo 17, go out the liquid, fixed mounting has fourth check valve 38 on the lateral wall that syringe 8 is close to supplementary section of thick bamboo 17 simultaneously, the output and the stock solution chamber of fourth check valve 38 communicate together, and the input fixed mounting of fourth check valve 38 has chucking mechanism, fourth check valve 38 links together through chucking mechanism and catheter 39, thereby with the leading-in stock solution intracavity of the inside liquid medicine of supplementary section of thick bamboo 17, realize the injection operation, make things convenient for medical personnel to inject multiple liquid medicine to patient, avoid puncturing patient's skin repeatedly in the multiple injection process, reduce patient's painful sense.

Preferably, a lateral wall of the needle head 18 of the syringe 8 is fixedly provided with an external thread 62, the external thread 62 is matched with the internal thread 31, so that the syringe 8 is installed in the driving groove 19 in a threaded manner, the fixed installation of the syringe 8 is completed, meanwhile, the sealing rod 49 is installed inside the guide groove 47 in a sliding manner, the end part of the sealing rod 49 extends out of the lateral wall of the syringe 8, the sealing rod 49 is used for sealing and isolating the guide groove 47, and the auxiliary barrel 17 is prevented from injecting liquid into the liquid storage cavity, and the liquid medicine flows out of the guide groove 47.

The clamping mechanism comprises a connecting cylinder 50, a convex block 52 and a clamping rod 56, the connecting cylinder 50 is fixedly installed at the input end of the fourth one-way valve 38, the inner diameter of the connecting cylinder 50 is the same as the outer diameter of the liquid guide tube 39, a left side groove 51 is formed in the inner wall of the left side of the connecting cylinder 50, the convex block 52 is installed in the left side groove 51 in a sliding mode, the convex block 52 is communicated with the left side groove 51 through an extrusion spring 53, a first clamping groove 54 is symmetrically formed in the left side wall of the liquid guide tube 39, the diameter of the first clamping groove 54 is the same as that of the convex block 52, a right through hole 55 is formed in the inner wall of the right side of the connecting cylinder 50, the right through hole 55 and the left side groove 51 are in the same straight line, the clamping rod 56 is installed in the right through hole 55 in a sliding mode, a pulling plate 57 is fixedly installed at the right end of the clamping rod 56, the pulling plate 57 is connected with the outer wall of the connecting cylinder 50 through a pair of tensioning springs 58, a second clamping groove 59 is symmetrically formed in the outer wall of the right side of the liquid guide tube 39, and the diameter of the second clamping groove 59 is the clamping rod 56; in the installation process of the catheter 39, the bump 52 and the clamping rod 56 are respectively pressed in the first clamping groove 54 and the second clamping groove 59 through the extrusion spring 53 and the tensioning spring 58, so that the catheter 39 is installed, when the catheter 39 needs to be disassembled, the pull plate 57 is pulled outwards, the clamping rod 56 is pulled out from the second clamping groove 59, the catheter 39 can be pulled out from the connecting cylinder 50, and the disassembly is more convenient.

According to the above preferred embodiment provided by the present invention, the working principle of the present invention is as follows: firstly, the liquid medicine is pumped into the auxiliary cylinder 17, then the liquid guide tube 39 is tightly clamped at the input end of the fourth one-way valve 38, meanwhile, the needle cylinder 8 is installed at the end part of the driving column 7 in a threaded mode, the liquid medicine to be injected is injected into the needle cylinder 8 from the auxiliary cylinder 17, then the end part of the push block 23 and the end part of the push plate 42 are contacted together by pressing the inflator 35 through the observation window 60, finally, an operator moves the device to a proper position, pushes the push rod 16 to insert the needle head 18 into the body of a patient, finally, the air pump 9 is started to drive the driving mechanism to work, the liquid medicine inside the needle cylinder 8 is injected into the body of the patient, after the medicine on one side is completed, the liquid medicine inside the other auxiliary cylinder 17 is injected into the needle cylinder 8, the operation is repeated, the liquid medicine injection on the same position can be achieved for multiple times, the damage caused by multiple times of puncture is greatly reduced, meanwhile, the liquid medicine is guaranteed to act on the same position, and the matching work effect between the medicines is better.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof.

Claims

1. The utility model provides a medicine ration injection device for operation local anesthesia, includes bottom plate (1), electric telescopic handle (2), cantilever (5) and injection mechanism, its characterized in that: the injection device is characterized in that an electric telescopic rod (2) is fixedly mounted on the top wall of the bottom plate (1), a driving motor (10) is fixedly mounted on the side wall of the electric telescopic rod (2), the driving motor (10) is fixedly mounted on the top wall of the bottom plate (1), meanwhile, a fixed seat (3) is fixedly mounted on the side wall of the electric telescopic rod (2), a mounting plate (4) is mounted on the side wall of the fixed seat (3) through bolts, a cantilever (5) is fixedly mounted on the side wall of the mounting plate (4), and an injection mechanism is mounted at the end part of the cantilever (5);

the injection mechanism comprises a fixed column (6), a driving column (7) and a needle cylinder (8), wherein a fixed groove (14) is formed in the right side end of the fixed column (6), the driving column (7) is slidably mounted in the fixed groove (14), a push rod (16) is slidably mounted on the left side wall of the fixed groove (14), the right side end of the push rod (16) is fixedly mounted on the side wall of the driving column (7), a driving groove (19) is formed in the driving column (7), a driving mechanism is arranged in the driving groove (19), the needle cylinder (8) is sleeved in the driving groove (19), a plurality of mounting holes (15) are formed in the left side end portion of the fixed column (6), and the fixed column (6) is mounted at the end portion of the cantilever (5) through mounting holes (15) in a bolt mode;

the driving mechanism comprises a fixed pipe (21), an expansion pipe (22) and a push block (23), the fixed pipe (21) is fixedly installed on the left side wall of a driving groove (19), the other end of the fixed pipe (21) is fixedly installed inside a partition plate (24), the partition plate (24) is fixedly installed on the side wall of the driving groove (19), meanwhile, the fixed pipe (21) is located at one end of the partition plate (24) and fixedly connected with the expansion pipe (22), the other end of the expansion pipe (22) is fixedly installed on the left side wall of the push block (23), an air outlet pipe (25) and an air inlet pipe (26) are symmetrically installed on the upper side wall and the lower side wall of the fixed pipe (21), the other end of the air inlet pipe (26) is connected with a first one-way valve (28), the first one-way valve (28) is fixedly installed on the bottom wall of a fixed column (6), the other end of the first one-way valve (28) is connected with an air pump (9) through a connecting air pipe (13), the air pump (9) is fixedly installed on the top wall of a bottom plate (1), the other end of the air outlet pipe (25) extends out of the second one-way valve (29), and the top wall of the second one-way valve (29) is installed on the top wall of the fixed column (6).

2. A quantitative injection device for surgical local anesthetic, according to claim 1, characterized in that: the bottom fixed mounting of fixed column (6) has positioning mechanism, positioning mechanism includes third check valve (33) and inflater (35), wherein third check valve (33) fixed mounting is on the left side wall of riser (32), riser (32) fixed mounting is on the diapire of fixed column (6), and fixed mounting has inflater (35) on the right side wall of riser (32), the gas outlet and third check valve (33) the intercommunication of inflater (35) are in the same place, the end of giving vent to anger of third check valve (33) links together through collecting pipe (34) and connecting trachea (13) simultaneously, observation window (60) have been seted up on the outer wall of fixed column (6) simultaneously, observation window (60) are located actuating mechanism directly over.

3. A quantitative injection device for surgical local anesthetic, according to claim 1, characterized in that: a partition plate (37) is fixedly arranged in the needle cylinder (8) and is divided into an upper liquid storage cavity and a lower liquid storage cavity by the partition plate (37), a piston (40) is arranged in the liquid storage cavity in a sliding way, a connecting rod (41) is fixedly arranged on the left side wall of the piston (40), the other end of the connecting rod (41) extends out of the side wall of the needle cylinder (8), wherein the extending ends of the two connecting rods (41) are connected together through a push plate (42), meanwhile, a pair of guide grooves (47) are formed in one side wall of the needle cylinder (8) far away from the connecting rod (41), the right side ends of the two guide grooves (47) are communicated together through a converging groove (48), the other end of the converging groove (48) is communicated with the needle head (18), the needle head (18) is fixedly arranged on the side wall of the right end of the needle cylinder (8), two auxiliary barrels (17) are symmetrically arranged on the upper side wall and the lower side wall of the needle cylinder (8), an extrusion rod (46) is arranged in the auxiliary barrels (17) in a sliding way, wherein one end of the auxiliary cylinder (17) far away from the extrusion rod (46) is fixedly provided with a liquid guide pipe (39), meanwhile, a fourth one-way valve (38) is fixedly arranged on the side wall of the needle cylinder (8) close to the auxiliary cylinder (17), the output end of the fourth one-way valve (38) is communicated with the liquid storage cavity, and the input end of the fourth one-way valve (38) is fixedly provided with a clamping mechanism, and the fourth one-way valve (38) is connected with the catheter (39) through the clamping mechanism.

4. A quantitative injection device for surgical local anesthetic, according to claim 3, characterized in that: the clamping mechanism comprises a connecting cylinder (50), a convex block (52) and a clamping rod (56), the connecting cylinder (50) is fixedly installed at the input end of the fourth one-way valve (38), the inner diameter of the connecting cylinder (50) is identical to the outer diameter of the liquid guide pipe (39), a left side groove (51) is formed in the inner wall of the left side of the connecting cylinder (50), the convex block (52) is installed in the left side groove (51) in a sliding mode, the convex block (52) is communicated with the left side groove (51) through an extrusion spring (53), first clamping grooves (54) are symmetrically formed in the left side wall of the liquid guide pipe (39), the diameter of the first clamping grooves (54) is identical to that of the convex block (52), a right through hole (55) is formed in the inner wall of the right side of the connecting cylinder (50), the right through hole (55) and the left side groove (51) are in the same straight line, the clamping rod (56) is installed in the right through hole (55) in a sliding mode, a pulling plate (57) is fixedly installed at the right end of the clamping rod (56), the pulling plate (57) is connected with the outer wall of the connecting cylinder (50) through a pair of tensioning spring (58), and a second clamping rod (59) is symmetrically formed in the outer wall of the second clamping groove (59) and is identical to the second clamping rod (59).

5. A quantitative injection device for surgical local anesthetic, according to claim 1, characterized in that: the inside fixed mounting of fixed pipe (21) has telescopic link (36), and the other end of telescopic link (36) links together with the lateral wall of ejector pad (23), and the winding has round reset spring (61) on the outer wall of flexible pipe (22) simultaneously, and the both ends of reset spring (61) are fixed mounting respectively on the lateral wall of ejector pad (23) and baffle (24).

6. A quantitative injection device for surgical local anesthetic, according to claim 3, characterized in that: fixed mounting has a plurality of sliders (20) on the outer wall of drive column (7), and slider (20) slidable mounting has seted up internal thread (31) on the tip inner wall of driving groove (19) simultaneously on the lateral wall of fixed slot (14), is used for thread mounting cylinder (8) to the inside fixed mounting in driving groove (19) has stopper (27), and the through-hole has been seted up to the inside of stopper (27), and the diameter of through-hole diameter and ejector pad (23) is the same.

7. The quantitative injection device for the operation local anesthetic according to claim 6, wherein: the needle head (18) is kept away from to cylinder (8) on the lateral wall fixed external screw thread (62) of having seted up, external screw thread (62) and internal thread (31) match each other, and the inside slidable mounting of guiding gutter (47) has sealing rod (49) simultaneously, and the tip of sealing rod (49) stretches out from the lateral wall of cylinder (8).

8. The quantitative injection device for the operation local anesthetic according to claim 1, wherein: the utility model discloses a wheel, including mounting panel (4), the diapire of mounting panel (4) is last to rotate and to be installed bracing piece (12), and the other end fixed mounting of bracing piece (12) is on the outer wall of electric telescopic handle (2) to install a plurality of universal wheels (11) on the diapire of bottom plate (1), universal wheel (11) select for use the wheel that has self-locking function.