CN213431703U

CN213431703U - Special operating handle of medicine dispensing machine

Info

Publication number: CN213431703U
Application number: CN202021864531.2U
Authority: CN
Inventors: 不公告发明人
Original assignee: Shijiazhuang Ruixiang Electronic Technology Co ltd
Current assignee: Shijiazhuang Bopu Information Technology Co.,Ltd.
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-06-15
Anticipated expiration: 2030-08-31

Abstract

The utility model discloses a special operating handle for a dispensing machine, which comprises a handle body, wherein an air inlet button and an air exhaust button are assembled on the handle body, the air inlet button and the air exhaust button are respectively and electrically connected with a PLC, an air pipe is inserted into one end of the handle body and is connected with an air filter arranged at the other end of the handle body, one end of the air filter, which is far away from the handle body, is detachably connected with a connector, and the handle body is detachably connected with a needle cylinder body through the connector; the connector comprises a connecting sleeve which is connected with the handle body and is in socket joint with the syringe body, the syringe body is provided with a flange connected with the connecting sleeve, and a limiting tightening mechanism used for tightening the flange is movably constructed on the connecting sleeve. The utility model discloses a dismouting is convenient, improves operating handle's life simultaneously, and prevents the purpose that the leakproofness of operating handle and filter equipment junction reduces. The utility model is suitable for a medical technical field who nurses dispensing equipment.

Description

Special operating handle of medicine dispensing machine

Technical Field

The utility model belongs to the technical field of doctorsing and nurses dispensing equipment, specifically speaking relates to a special operating handle of dispensing machine.

Background

At present, in nurse's the field of dispensing, because a large amount of repeated operations of dispensing of needs every day, and the process of dispensing all is in the environment that exposes, in order to reduce nurse's working strength, the medicine that reduces simultaneously to be equipped with is in clean environment, adopts electronic or pneumatic dispensing equipment to connect medicine dissolving device (syringe), and application mechanical transmission or pneumatic drive cylinder body aspirate the liquid medicine, and then has realized reducing nurse's working strength, aseptic technique's purpose. However, the filter device of the existing dispensing equipment is inconvenient to replace, and the filter device needs to be integrally disassembled to be disposed as medical waste, so that the cost is too high, and the service life of the operating handle is too low due to hard frequent disassembly and assembly, and meanwhile, the sealing performance of the joint of the operating handle and the filter device is affected.

SUMMERY OF THE UTILITY MODEL

The utility model provides a special operating handle of medicine dispensing machine for realize that the dismouting is convenient, improve operating handle's life simultaneously, and prevent the purpose that the leakproofness of operating handle and filter equipment junction reduces.

In order to achieve the above object, the utility model adopts the following technical scheme:

an air inlet button and an air exhaust button are assembled on the handle body and are respectively electrically connected with a PLC (programmable logic controller), an air pipe is inserted into one end of the handle body and is connected with an air filter arranged at the other end of the handle body, one end, far away from the handle body, of the air filter is detachably connected with a connector, and the handle body is detachably connected with a needle cylinder body through the connector; the connector comprises a connecting sleeve which is connected with the handle body and is in socket joint with the syringe body, the syringe body is provided with a flange connected with the connecting sleeve, and a limiting tightening mechanism used for tightening the flange is movably constructed on the connecting sleeve.

Furthermore, the limiting tightening mechanism comprises a control sleeve sleeved outside the connecting sleeve, assembling holes are formed in the connecting sleeve at intervals along the circumferential direction of the connecting sleeve, limiting beads are assembled in the assembling holes respectively, and abutting parts capable of abutting against the limiting beads to enable the limiting beads to protrude out of the inner wall of the connecting sleeve are formed on the inner wall of the control sleeve; a limiting plate extending outwards along the radial direction of the connecting sleeve is constructed on the connecting sleeve, and when one end of the control sleeve, which is far away from the syringe body, abuts against the limiting plate, the abutting part is separated from the limitation of the limiting ball; the connecting sleeve is provided with a boss which extends outwards along the radial direction of the connecting sleeve, the connecting sleeve is sleeved with a spring of which two ends are abutted against the boss and the abutting part, and when the spring is abutted against the outer side of the limiting bead, the spring is in a compressed state or a free state.

Furthermore, a sealing part matched with the flange end part of the syringe body is formed on the inner wall of the connecting sleeve along the radial direction inwards; and a sealing element is arranged on the surface of the sealing part sealed with the flange.

Furthermore, the air filter comprises a first air passing piece and a second air passing piece which are detachably connected together and form an assembly cavity, the first air passing piece and the second air passing piece are respectively communicated with the outside through a first communication channel and a second communication channel which are arranged on respective bodies, a filtering membrane is movably assembled in the assembly cavity, and a first pressure relief channel and a second pressure relief channel which are used for balancing the pressure of the syringe body are respectively formed on the end walls of the two air passing pieces which form the assembly cavity; when the gas enters the assembly cavity from the first communicating channel, the filtering membrane is attached to the second pressure relief channel and the second communicating channel, and the gas filtered by the filtering membrane enters the syringe body through the second communicating channel; when gas enters the assembly cavity from the first communication channel and the pressure in the syringe body is smaller than the pressure in the assembly cavity or is vacuum, the filter membrane deforms and is attached to the second communication channel, and meanwhile the second pressure relief channel communicates the syringe body with the assembly cavity; when the gas is pumped out of the assembly cavity through the first communicating channel, the filtering membrane is attached to the first pressure relief channel and the first communicating channel, and the gas filtered by the filtering membrane is pumped out of the syringe body through the first communicating channel; when the gas is pumped out of the assembly cavity through the first communication channel and the pressure in the needle cylinder body is greater than the pressure in the assembly cavity; the filtering membrane deforms and is attached to the first communicating channel, and meanwhile the first pressure relief channel communicates the needle cylinder body with the assembling cavity.

Further, the first air passing part comprises a first body with a first connecting part, the first connecting part is connected with the second air passing part, and a joint pipe communicated with the first communication channel is constructed on the first body.

Further, first communicating channel is close to a plurality of concentric annuluses on the terminal surface of assembly chamber including constructing in first body, just a plurality of annuluses communicate each other and communicate in the adapter tube through a plurality of slots, and the annular outside that just is located the outer lane on first body is constructed with first annular protruding, filtration membrane and the protruding cooperation of first annular and separate annular and assembly chamber.

Furthermore, the second air passing part comprises a second body with a second connecting part, the second connecting part is connected with the first air passing part, and a plurality of air holes communicated with the assembling cavity through a second communicating channel are formed in the second body.

Furthermore, the second communicating channel comprises a plurality of plate-shaped bodies which are uniformly constructed on the end face of the second body close to one end of the assembly cavity, a second annular bulge which surrounds the plate-shaped bodies and the air holes is constructed on the second body, and the filtering membrane is matched with the second annular bulge and separates the plate-shaped bodies from the assembly cavity.

Furthermore, the first air passing part and the second air passing part are made of metal or plastic materials.

Furthermore, the one end of cylinder body is sealed and is constructed at this end and has the syringe needle connector, in the other end department of cylinder body is constructed and is followed its radial outside flange that extends, the flange stretches into in the operating handle and fixed with handle body circumference, and the annular sealed recess has been seted up to the one end that keeps away from the syringe needle connector in the flange, the axis coincidence of sealed recess and cylinder body, and sealed recess communicates through the hollow position of location mouth with the cylinder body.

The utility model discloses owing to adopted foretell structure, it compares with prior art, and the technical progress who gains lies in: the utility model discloses the handle body passes through the connector fixed cylinder body, and cylinder body cartridge is in the adapter sleeve to tighten the flange on the cylinder body through spacing tightening mechanism, and operating personnel realizes the fixed or separation of adapter sleeve and cylinder body through controlling spacing tightening mechanism, and then realizes that cylinder body and adapter sleeve are connected more conveniently, adopts flange circumference to seal simultaneously, also can adopt circumference seal and end face seal mutually combined's way, and then improves the leakproofness of connecting; the handle body, the air filter, the connector and the syringe body can be disassembled, so that the assembly and the replacement and maintenance of each part are convenient; to sum up, the utility model discloses a dismouting is convenient, improves operating handle's life simultaneously, and prevents the purpose that the leakproofness of operating handle and filter equipment junction reduces.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

FIG. 1 is a schematic structural view of the connection between the operating handle connector and the syringe body according to the embodiment of the present invention;

FIG. 2 is an exploded view of the structure of FIG. 1;

fig. 3 is a schematic structural diagram of an embodiment of the present invention;

fig. 4 is a schematic structural view of the embodiment of the present invention;

FIG. 5 is a schematic structural view of a first air passing member according to an embodiment of the present invention;

fig. 6 is a schematic structural view of the first air passing member at another angle according to the embodiment of the present invention;

fig. 7 is a structural bottom view of the first air passing member according to the embodiment of the present invention;

FIG. 8 is a schematic structural view of a second air passing member according to an embodiment of the present invention;

fig. 9 is a schematic structural view of the second air passing member at another angle according to the embodiment of the present invention;

FIG. 10 is a top view of a second air passage member according to an embodiment of the present invention;

FIG. 11 is a cross-sectional view of an axial configuration of an embodiment of the present invention with a filter membrane removed;

fig. 12 is a sectional view of an axial structure of an embodiment of the present invention;

FIG. 13 is a cross-sectional view of the axial configuration of the embodiment of the present invention as gas normally enters the syringe body through the filter membrane;

FIG. 14 is a sectional view of the axial structure of the embodiment of the present invention in a situation where there is a large pressure difference between the fitting chamber and the syringe body when gas enters the fitting chamber;

FIG. 15 is an enlarged view of the structure of portion A in FIG. 14;

FIG. 16 is a cross-sectional view of the axial structure of the embodiment of the present invention as gas is normally drawn through the filter membrane and out of the syringe body;

FIG. 17 is a sectional view of the axial structure of the embodiment of the present invention in a situation where the assembly chamber and the syringe body have a large pressure difference when gas is pumped out of the assembly chamber;

FIG. 18 is an enlarged view of the portion B in FIG. 17;

FIG. 19 is a schematic view of the structure of the syringe body according to the embodiment of the present invention;

fig. 20 is a structural sectional view of an embodiment of the present invention;

fig. 21 is a schematic structural diagram of an embodiment of the present invention;

fig. 22 is another schematic structural diagram of the embodiment of the present invention;

FIG. 23 is a schematic structural view of a syringe body according to an embodiment of the present invention;

fig. 24 is a schematic structural view of a sealing member according to an embodiment of the present invention;

figure 25 is a sectional view of the syringe body according to the embodiment of the present invention.

Labeling components: 1-syringe body, 2-needle head connector, 3-flange, 4-annular clamping groove, 5-sealing groove, 6-positioning opening, 7-rubber ring body, 8-sealing protrusion, 9-positioning protrusion, 10-connecting sleeve, 11-control sleeve, 12-limiting bead, 13-abutting part, 14-retainer ring, 15-spring, 16-limiting plate, 17-sealing part, 18-thread sleeve, 19-anti-slip thread, 20-fixing part, 22-slot, 23-assembly part, 24-handle body, 25-air inlet button, 26-air exhaust button, 27-air pipe, 100-first air passing part, 101-first body, 102-first connecting part, 103-joint pipe, 104-air passage, 105-a first annular bulge, 106-a spacer ring, 107-a ring groove, 108-a groove, 109-a reinforcing plate, 200-a second gas passing piece, 201-a second body, 202-a second connecting part, 203-an assembling lug, 204-a second annular bulge, 205-an air hole, 206-a plate body, 207-an installing groove, 300-an assembling cavity and 400-a filtering membrane.

Detailed Description

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the invention.

The utility model discloses a special operating handle of medicine dispensing machine, as shown in fig. 1-2, including handle body 24, be equipped with air inlet button 25 and bleed button 26 on handle body 24, and air inlet button 25 and bleed button 26 electricity respectively connect PLC, trachea 27 has been inserted to handle body 24's one end, and trachea 27 stretches into in handle body 24 and is connected with the air cleaner who installs in the handle body 24 other end, and air cleaner keeps away from handle body 24's one end and can dismantle and be connected with the connector, and handle body 24 can dismantle through the connector and connect syringe body 1. Specifically, the connector comprises a connecting sleeve 10 connected with the handle body 24 and connected with the syringe body 1 in a socket-and-spigot manner, the syringe body 1 is provided with a flange 3 connected with the connecting sleeve 10, and a limiting tightening mechanism for tightening the flange 3 is movably constructed on the connecting sleeve 10. The utility model discloses a theory of operation and advantage lie in: the utility model discloses handle body 24 passes through connector fixed needle cylinder body 1, and needle cylinder body 1 cartridge is in adapter sleeve 10 to tighten flange 3 on the needle cylinder body 1 through spacing tightening mechanism, and operating personnel realizes the fixed or separation of adapter sleeve 10 and needle cylinder body 1 through controlling spacing tightening mechanism, and then realizes that the connection of needle cylinder body 1 and adapter sleeve 10 is more convenient, adopts flange 3 circumferential seal simultaneously, also can adopt circumferential seal and end face seal mutually combined method, and then improves the leakproofness of connecting; the handle body 24, the air filter, the connector and the syringe body 1 can be disassembled, so that the assembly and the replacement and maintenance of each part are convenient; to sum up, the utility model discloses a dismouting is convenient, improves handle body 24's life simultaneously, and prevents the purpose that the leakproofness of handle body 24 and filter equipment junction reduces.

As a preferred embodiment of the present invention, as shown in fig. 19 to 25, the connecting head comprises the connecting sleeve 10 and the limiting tightening mechanism, the connecting sleeve 10 is connected with the handle body 24 and is socket-connected with the syringe body 1, wherein the syringe body 1 has the flange 3 connected with the connecting sleeve 10, and the limiting tightening mechanism is movably configured on the connecting sleeve 10 and is used for tightening the flange 3, thereby realizing the fixation of the syringe body 1. The working principle and the advantages of the embodiment are as follows: the connecting device is fixed with the handle body 24, the needle cylinder body 1 is inserted into the connecting sleeve 10, the flange 3 on the needle cylinder body 1 is tightened through the limiting tightening mechanism, an operator controls the limiting tightening mechanism to fix or separate the connecting sleeve 10 and the needle cylinder body 1, and then the connection between the needle cylinder body 1 and the connecting sleeve 10 is more convenient, meanwhile, the flange 3 is circumferentially sealed, and a method of mutually combining circumferential sealing and end face sealing can be adopted, so that the connection tightness is improved; in summary, the present embodiment has the characteristics of being able to rapidly assemble and disassemble the syringe body and improving the sealing performance between the syringe body and the handle body 24.

As a preferred embodiment of the present invention, as shown in fig. 20, the spacing tightening mechanism includes a control sleeve 11 sleeved outside the connecting sleeve 10, assembling holes are uniformly opened on the connecting sleeve 10 along the circumference thereof, spacing beads 12 are respectively assembled in each assembling hole, an abutting portion 13 is constructed on the inner wall of the control sleeve 11, when the abutting portion 13 abuts on each spacing bead 12, the spacing beads 12 protrude out of the inner wall of the connecting sleeve 10 and are clamped in an annular clamping groove 4 opened on the circumferential surface of the flange 3, so as to realize the fixed connection of the syringe body 1. Through the control sleeve 11 of the axial activity along adapter sleeve 10 for control sleeve 11 and spacing pearl 12 butt or separation, and then realize the fixed connection or the connection release to the flange 3 of syringe body 1. In the embodiment, in order to limit the upper and lower sliding limits of the control sleeve 11, a limiting plate 16 extending outwards along the radial direction of the connecting sleeve 10 is configured, and when one end of the control sleeve 11 away from the syringe body 1 abuts on the limiting plate 16, the abutting part 13 is separated from the limitation of the limiting bead 12; a retainer ring 14 is arranged on the outer wall of the connecting sleeve 10 close to one end of the syringe body 1, and when the control sleeve 11 is contacted with the retainer ring 14, the abutting part 13 is abutted against the outer side of the limiting bead 12, so that the limiting bead 12 is clamped in the annular groove of the flange 3. In order to facilitate the return of the control sleeve 11, a boss extending outward in the radial direction is configured on the connecting sleeve 10, a spring 15 is sleeved on the connecting sleeve 10, two ends of the spring 15 are respectively abutted against the boss and the abutting part 13, when the abutting part 13 is abutted against the outer side of the limiting bead 12, the spring 15 is in a compression state or a free state, so that the control sleeve 11 is always kept in a state of being abutted against the retainer ring 14 under the action of non-external force, and the situation that the syringe body 1 is loosened or separated from the connecting sleeve 10 in the using process is avoided. In order to avoid the unstable holding phenomenon of the operator during the sliding of the control sleeve 11, the present embodiment is configured with a grid-shaped anti-slip pattern 19 on the outer surface of the control sleeve 11.

As a preferred embodiment of the present invention, the connection mode between the syringe body 1 and the present invention is various, and the present embodiment is implemented by enumerating the following modes:

first, as shown in fig. 20, a sealing portion 17 is formed on the inner wall of the connecting sleeve 10 along the radial direction inward thereof, the sealing portion 17 is engaged with the end of the flange 3 of the cylinder body 1, and a sealing member is provided on the surface of the sealing portion 17 sealed with the flange 3 in order to improve sealability.

Secondly, as shown in fig. 2, a fitting 23 for sealing the end of the flange 3 of the cylinder body 1 is engaged with the inside of the connecting sleeve 10, the fitting 23 abuts against the corresponding end of the handle body 24, and a sealing member is fitted between the fitting 23 and the flange 3 of the cylinder body 1.

Thirdly, as shown in fig. 1-2, the connection sleeve 10 is clamped at the corresponding end of the handle body 24, or the connection sleeve 10 is clamped at the air filter detachably connected with the handle body 24, a claw is configured on the connection sleeve 10, and a mounting groove 207 for clamping the claw is configured at the end of the handle body 24 or the air filter. The air filter and the handle body 24 are detachably connected by a screw connection or the like, or the air filter and the handle body 24 are integrally formed.

As a preferred embodiment of the present invention, the connection mode with the handle body 24 of the present invention is multiple, and the following connection mode is preferred: firstly, a thread sleeve 18 is formed at one end of the connecting sleeve 10 far away from the syringe body 1, and the thread sleeve 18 is in threaded connection with the end part of the handle body 24; secondly, at one end of the connecting sleeve 10 far away from the syringe body 1 is a fixing part 20, and the corresponding end of the fixing part 20 and the handle body 24 is constructed into an integrally formed structure.

The utility model also discloses a dispense and use medicine dissolving cylinder, as shown in fig. 5, including

cylinder body

1, 1 one end of this cylinder body is sealed, and be constructed with syringe needle connector 2 at this end, a erection joint for the syringe needle, another department at cylinder body 1 is constructed with along its radial outside flange 3 that extends, medical personnel insert handle body 24 with cylinder body 1's flange 3, this flange 3 stretches into in handle body 24 and fixed with 24 circumference joints of handle body, annular sealed recess 5 has been seted up to the one end of keeping away from syringe needle connector 2 at flange 3, this sealed recess 5 and cylinder body 1's axis coincidence, and sealed recess 5 is through the hollow position intercommunication of locating port 6 with cylinder body 1.

As a preferred embodiment of the present invention, in order to facilitate the production, the cost input and the liquid level observation in the syringe body 1, the needle head connector 2 and the flange 3 are made of an integrally formed polyethylene material.

As a preferred embodiment of the present invention, as shown in fig. 5, in order to further limit the axial rotation of the syringe body 1 and the handle body 24 and improve the connection and sealing strength between the syringe body 1 and the handle body 24, the number of the positioning holes 6 is at least two and is uniformly arranged along the circumferential direction of the flange 3.

As a preferred embodiment of the present invention, a ring groove 4 extending radially inward is formed on the circumferential surface of the flange 3, and the flange 3 is connected to the handle body 24 via the ring groove 4. Install foretell connector on the handle body 24, this connector passes through the joint and realizes being connected with cylinder body 1 in ring groove 4, like this because cylinder body 1 is fixed with 24 annular joints of handle body for the joint strength of the two improves, and then improves handle body 24's life, and connects back cylinder body 1 and is bound by the connector and can't take place axial motion, and then has ensured its leakproofness with handle body 24.

The utility model also discloses a special sealing member with dissolve medicine cylinder matched with, as shown in fig. 6-7, including rubber ring body 7, this rubber ring body 7 is fixed on handle body 24, is constructed along its axially extended annular sealed arch 8 in the inboard of rubber ring body 7, and the position department corresponding with location mouth 6 on sealed arch 8 constructs the location arch 9, and when the terminal surface of rubber ring body 7 was hugged closely on the flange 3 terminal surface in the sealed recess 5 outside, sealed arch 8 and location arch 9 inlayed respectively and were established in sealed recess 5 and location mouth 6.

As a preferred embodiment of the present invention, the cross section of the rubber ring body 7 is rectangular, so that the rubber ring body 7 and the end surface of the flange 3 are in surface-to-surface contact, and the sealing performance between the syringe body 1 and the rubber ring body 7 is further improved.

As a preferred embodiment of the present invention, the syringe body 1 is marked with the sub alignment line, and the handle body 24 is provided with the main alignment line, so that when the syringe body 1 is inserted into the handle body 24 and the sub alignment line and the main alignment line are inserted into the main alignment line, the sealing protrusion 8 and the positioning protrusion 9 are respectively inserted into the sealing groove 5 and the positioning hole 6. The problem that medical personnel can not accurately position in the process of inserting the needle cylinder body 1 into the operation joint is avoided, and after the needle cylinder body 1 is inserted into a preset position, the position of the needle cylinder body is the best angle for observing the liquid level of the medical personnel.

In summary, as shown in fig. 7, in the present embodiment, the flange 3 is connected to the handle body 24, so that the strength of the connection between the butterfly wing at the tail end of the existing syringe body 1 and the handle body 24 is increased, and the connection is convenient, and meanwhile, since the syringe body 1 is circumferentially fixed by the flange 3 and the end face of the flange 3 is used for sealing, the problem of mutual influence between the fixation and the sealing due to the two-in-one function of sealing and connecting the end face of the existing syringe body is avoided; moreover, due to the arrangement of the sealing groove 5, the positioning opening 6 and a special sealing piece, the sealing between the syringe body 1 and the handle body 24 is changed in a step-type gradient manner, so that the sealing capability is improved and the service life is prolonged; the matching of the positioning opening 6 and the positioning bulge 9 increases the strength of the syringe body 1 and the handle body 24 on one hand, and positions the syringe body 1 on the other hand, so that a nurse can observe scales on the syringe body 1 conveniently, and the syringe body 1 and the handle body 24 are prevented from rotating axially; therefore, the utility model provides a problem that cylinder body cartridge is inconvenient, leakproofness reduces.

As a preferred embodiment of the present invention, as shown in fig. 3 to 18, the air filter includes a first air passing member 100 and a second air passing member 200, the first air passing member 100 and the second air passing member 200 are detachably connected to each other, an assembly chamber 300 is formed therebetween, the first air passing member 100 and the second air passing member 200 communicate the assembly chamber 300 with the outside through a first communicating channel and a second communicating channel formed on the respective bodies, respectively, a filtering membrane 400 is movably assembled in the assembly chamber 300, and a first pressure relief channel and a second pressure relief channel for balancing the pressure of the syringe body are respectively formed on the end walls of the first air passing member 100 and the second air passing member 200 constituting the assembly chamber 300. The first air passing part 100 and the second air passing part 200 are made of metal or plastic materials. The working principle and the advantages of the embodiment are as follows: because the filter membrane 400 of the present embodiment is movably assembled in the assembly chamber 300 formed by the first gas passing piece 100 and the second gas passing piece 200; during the pumping of the liquid medicine, the filtering membrane 400 has four actions: first, as shown in fig. 13, when the liquid medicine in the syringe body is injected into the target medicine bottle or medicine bag, and the pressure difference between the piston of the syringe body and the pressure in the assembly chamber 300 is small, the filtering membrane 400 is attached to the second pressure release channel and the second communication channel, the gas filtered by the filtering membrane 400 enters the syringe body through the second communication channel, and pushes the piston to push out the liquid medicine in the syringe body; secondly, as shown in fig. 16, when the gas is pumped out of the assembly chamber 300 through the first communication channel, and the pressure difference between the piston of the syringe body and the pressure in the assembly chamber 300 is small, the filter membrane 400 is attached to the first pressure relief channel and the first communication channel, the gas filtered by the filter membrane 400 is pumped out of the syringe body through the first communication channel, so that the piston moves integrally with the pulling force of the gas, and the syringe body pumps the liquid medicine; thirdly, as shown in fig. 14-15, when the gas enters the assembly chamber 300 through the first communication channel and the pressure in the syringe body is smaller than the pressure in the assembly chamber 300 or is a vacuum, the filter membrane 400 deforms and adheres to the second communication channel, and the second pressure release channel communicates the syringe body with the assembly chamber 300, so that the pressures of the syringe body and the assembly chamber 300 are balanced or nearly balanced, and then the first action is completed; fourthly, as shown in fig. 17 to 18, when the air is drawn out of the assembly chamber 300 through the first communicating channel and the suction force is not balanced with the pressure in the syringe body, the filtering membrane 400 is deformed and attached to the first communicating channel, and the first pressure-releasing channel communicates the syringe body with the assembly chamber 300, so that the pressures of the syringe body and the assembly chamber 300 are balanced or nearly balanced, and then the above-mentioned second action is completed; in the embodiment, the first gas passing piece 100 and the second gas passing piece 200 are detachably connected, so that the filtering membrane 400 can be conveniently and periodically replaced, and the filtering membrane 400 can be replaced according to the use times, thereby avoiding the problems of resource waste and large cost investment caused by the conventional integral replacement; in summary, the present embodiment solves the problem that the piston in the syringe body cannot be driven to move due to the large front-back pressure difference of the filtering membrane 400, and the pumping of the liquid medicine cannot be completed, and simultaneously achieves the purpose of reducing the investment cost.

As a preferred embodiment of the present invention, as shown in fig. 5, the first gas passing member 100 includes a first body 101, the first body 101 has a first connecting portion 102 having a cylindrical shape, an external bolt is formed on a circumferential surface of the first connecting portion 102, and the first connecting portion 102 is screwed with the second gas passing member 200, so that the first gas passing member 100 and the second gas passing member 200 are attached and detached and the filtering membrane 400 is replaced. In the present embodiment, the first body 101 is provided with a joint tube 103 communicating with the first communicating channel, the hollow part of the joint tube 103 is an air channel 104, and the joint tube 103 is connected with a gas pipe. In order to reduce the weight of the handle body 24 held by the medical staff and save the material investment, the first body 101 is a shell-shaped structure, a reinforced connecting member is configured between the joint pipe 103 and the shell-shaped structure, the reinforced connecting member comprises a sleeve body configured on the shell structure and used for sleeving the joint pipe 103, and a plurality of reinforcing plates 109 are configured between the sleeve body and the joint pipe 103 for improving the connecting strength of the joint pipe 103.

As a preferred embodiment of the present invention, as shown in fig. 6 to 7, the first communicating channel includes a plurality of concentric ring grooves 107 formed on an end surface of the first body 101 near the assembling chamber 300, and the ring grooves 107 communicate with each other and with the joint pipe 103 via a plurality of grooves 108, a spacer ring 106 is formed between the adjacent ring grooves 107, and each groove 108 communicates the ring groove 107 divided by the spacer ring 106 and is formed to extend radially outward from the center of the first body 101. A first annular projection 105 is configured on the first body 101, outside the annular groove 107 of the outermost ring, and the rim of the filter membrane 400 cooperates with the first annular projection 105 and separates the annular groove 107 from the assembly chamber 300. When gas is pumped out of the assembly chamber 300 through the first communication passage and the suction force is not balanced with the pressure in the syringe body, the filter membrane 400 is deformed, as shown in fig. 17 to 18, thereby preventing the piston from moving effectively. The first air passing member 100 of the present embodiment is an integrally formed structure, so that the mass production thereof and the strength of the finished product are effectively ensured.

As a preferred embodiment of the present invention, as shown in fig. 8, the second air passing member 200 includes a second body 201, the second body 201 has a second connecting portion 202, the second body 201 is a sleeve-shaped structure with a radial cross section being circular, one end of the sleeve-shaped structure far away from the first body 101 is closed, and a plurality of air holes 205 are uniformly opened at the one end, the air holes 205 are communicated with the assembly cavity 300 through a second communicating channel, the second connecting portion 202 is an internal thread formed on an inner wall of the sleeve-shaped structure, and the second connecting portion 202 is in threaded connection with the first air passing member 100. The second communicating channel of this embodiment includes a plurality of plate-like bodies 206, the plate-like bodies 206 are uniformly configured on an end surface of the second body 201 near the fitting chamber 300, the second body 201 is configured with a second annular protrusion 204 which surrounds both the plate-like body 206 and the air hole 205 therein, and the edge of the filter membrane 400 is engaged with the second annular protrusion 204 and separates the plate-like body 206 from the fitting chamber 300. The second body 201 of the present embodiment is configured with a fitting ear 203, and the first air passing member 100 abuts on the fitting ear 203 through the connection of the second connecting portion 202. When gas enters the assembly cavity 300 through the first communication channel and the pressure in the syringe body is smaller than the pressure in the assembly cavity 300 or is vacuum, as shown in fig. 14-15, the filtering membrane 400 deforms, so that the pressure of the syringe body and the pressure in the assembly cavity 300 are balanced or nearly balanced, and the situation that the piston cannot effectively move is avoided. The second air passing member 200 of the present embodiment is an integrally formed structure, so as to facilitate mass production thereof and ensure the connection strength with the first air passing member 100. The second body 201 of the present embodiment is configured with a mounting groove 207 at an end portion thereof away from the mounting chamber 300 for mounting the connector of the syringe body.

Finally, it should be noted that: 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. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the protection of the claims of the present invention.

Claims

1. The utility model provides a special operating handle of medicine dispensing machine which characterized in that: the air filter is detachably mounted at one end of the handle body, a connector is detachably connected at one end, away from the handle body, of the air filter, and the handle body is detachably connected with the needle cylinder body through the connector; the connector comprises a connecting sleeve connected with the handle body and in socket connection with the syringe body, the syringe body is provided with a flange connected with the connecting sleeve, and a limiting tightening mechanism for tightening the flange is movably constructed on the connecting sleeve; a sealing part matched with the flange end part of the syringe body is formed on the inner wall of the connecting sleeve along the radial direction inwards; a sealing element is arranged on the surface of the sealing part sealed with the flange; the syringe comprises a syringe body, a handle body, a needle head connector, a flange and a sealing groove, wherein one end of the syringe body is closed and is constructed with the needle head connector at the end, the other end of the syringe body is constructed with the flange which extends outwards along the radial direction of the syringe body, the flange extends into the operating handle and is fixed with the handle body in the circumferential direction, one end of the flange, which is far away from the needle head connector, is provided with the annular sealing groove, the sealing groove is superposed with the axis of the syringe body, and the sealing groove is communicated with the hollow part of.

2. The special operating handle for the dispensing machine according to claim 1, wherein: the limiting tightening mechanism comprises a control sleeve sleeved outside the connecting sleeve, assembling holes are formed in the connecting sleeve at intervals along the circumferential direction of the connecting sleeve, limiting beads are assembled in the assembling holes respectively, and abutting parts capable of abutting against the limiting beads to enable the limiting beads to protrude out of the inner wall of the connecting sleeve are constructed on the inner wall of the control sleeve; a limiting plate extending outwards along the radial direction of the connecting sleeve is constructed on the connecting sleeve, and when one end of the control sleeve, which is far away from the syringe body, abuts against the limiting plate, the abutting part is separated from the limitation of the limiting ball; the connecting sleeve is provided with a boss which extends outwards along the radial direction of the connecting sleeve, the connecting sleeve is sleeved with a spring of which two ends are abutted against the boss and the abutting part, and when the spring is abutted against the outer side of the limiting bead, the spring is in a compressed state or a free state.

3. The special operating handle for the dispensing machine according to claim 1, wherein: the air filter comprises a first air passing piece and a second air passing piece which are detachably connected together and form an assembly cavity, the first air passing piece and the second air passing piece are respectively communicated with the outside through a first communication channel and a second communication channel which are arranged on respective bodies, a filtering membrane is movably assembled in the assembly cavity, and a first pressure relief channel and a second pressure relief channel which are used for balancing the pressure of the syringe body are respectively formed on the end walls of the first air passing piece and the second air passing piece which form the assembly cavity; when the gas enters the assembly cavity from the first communicating channel, the filtering membrane is attached to the second pressure relief channel and the second communicating channel, and the gas filtered by the filtering membrane enters the syringe body through the second communicating channel; when gas enters the assembly cavity from the first communication channel and the pressure in the syringe body is smaller than the pressure in the assembly cavity or is vacuum, the filter membrane deforms and is attached to the second communication channel, and meanwhile the second pressure relief channel communicates the syringe body with the assembly cavity; when the gas is pumped out of the assembly cavity through the first communicating channel, the filtering membrane is attached to the first pressure relief channel and the first communicating channel, and the gas filtered by the filtering membrane is pumped out of the syringe body through the first communicating channel; when the gas is pumped out of the assembly cavity through the first communication channel and the pressure in the needle cylinder body is greater than the pressure in the assembly cavity; the filtering membrane deforms and is attached to the first communicating channel, and meanwhile the first pressure relief channel communicates the needle cylinder body with the assembling cavity.

4. The special operating handle for the dispensing machine according to claim 3, wherein: the first gas passing piece comprises a first body with a first connecting part, the first connecting part is connected with the second gas passing piece, and a joint pipe communicated with the first communication channel is constructed on the first body.

5. The special operating handle for the dispensing machine according to claim 3, wherein: first communicating channel is close to a plurality of endocentric annuluses on the terminal surface of assembly chamber including constructing in first body, just a plurality of annuluses communicate each other and communicate in the adapter tube through a plurality of slots, and the annular outside that just is located the outer lane on first body is constructed with first annular arch, filtration membrane and the protruding cooperation of first annular and separate annular and assembly chamber.

6. The special operating handle for the dispensing machine according to claim 3, wherein: the second air passing part comprises a second body with a second connecting part, the second connecting part is connected with the first air passing part, and a plurality of air holes communicated with the assembling cavity through a second communicating channel are formed in the second body.

7. The special operating handle for the dispensing machine according to claim 6, wherein: the second communicating channel comprises a plurality of plate-shaped bodies which are uniformly constructed on the end face of the second body close to one end of the assembly cavity, a second annular bulge which surrounds the plate-shaped bodies and the air holes in the second body is constructed on the second body, and the filtering membrane is matched with the second annular bulge and separates the plate-shaped bodies from the assembly cavity.

8. The special operating handle for the dispensing machine according to claim 3, wherein: the first air passing part and the second air passing part are made of metal or plastic materials.