CN214860047U

CN214860047U - Push type syringe

Info

Publication number: CN214860047U
Application number: CN202120767382.6U
Authority: CN
Inventors: 程娅
Original assignee: LU'AN PEOPLE'S HOSPITAL
Current assignee: LU'AN PEOPLE'S HOSPITAL
Priority date: 2021-04-14
Filing date: 2021-04-14
Publication date: 2021-11-26
Anticipated expiration: 2031-04-14

Abstract

The utility model belongs to the technical field of syringes, in particular to a push type syringe, which comprises an injection tube, a piston and a piston shaft which are arranged in the injection tube, wherein a containing tube is fixedly arranged at the front end part of the injection tube, one end of the injection tube, which is close to the containing tube, is filled with a latex filling layer, the containing tube is movably connected with the piston through a piston rod, and the rear end of the piston rod is movably connected with a handle through a movable connecting piece; the syringe in this application can guarantee that the syringe needle can be taken in and hold a section of thick bamboo after the use, and need not to cover the syringe needle cap, has avoided the syringe among the prior art to cover the syringe needle cap after using and can arouse the syringe needle problem of stabbing, through arranging of latex filling layer and sealing rubber pad in addition, can also prevent dust pollution and the remaining problem of syringe needle liquid medicine in the external environment when the syringe needle is accomodate, just the utility model discloses simple structure, reasonable in design is convenient for realize.

Description

Push type syringe

Technical Field

The utility model belongs to the technical field of the syringe, concretely relates to push type syringe.

Background

The injector is composed of a syringe with a small hole at the front end and a piston core rod matched with the syringe, and is used for injecting a small amount of liquid or gas into an area which cannot be accessed by other methods or extracting the liquid or the gas from the area, when the core rod is pulled out, the liquid or the gas is sucked from the small hole at the front end of the syringe, and when the core rod is pushed in, the liquid or the gas is extruded.

Folding and unfolding device

In the use process of the existing syringe, a needle head at the front end of the syringe is detachable, liquid medicine needs to be extracted firstly before injection, the needle head is connected with a syringe nipple, a needle cap of the needle head needs to be removed firstly, the needle head is easy to stab when the syringe is sleeved after the medicine extraction is finished, the use is inconvenient, and the loss and the pollution of the injection needle are easy to cause; particularly, when an animal experiment is carried out, the same medicine is injected into an animal body at intervals sometimes, and if a conventional injector is used, an injection cap needs to be covered after each use, so that pollution and other people are prevented from being injured, operation steps are increased, and injection efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a push type syringe, which solves the problems that the prior syringe can cause puncture of the needle head and residual pollution of the needle head when the syringe cap is covered after the use is finished.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

a push type injector comprises an injection tube, a piston and a piston shaft, wherein the piston and the piston shaft are arranged in the injection tube, a containing tube is fixedly arranged at the front end part of the injection tube, a latex filling layer is filled at one end, close to the containing tube, of the injection tube, the containing tube is movably connected with the piston through a piston rod, and the rear end of the piston rod is provided with a handle through a movable connecting piece;

the front end of the piston rod is detachably connected with a needle head, an expansion spring is sleeved on the piston rod, and the rear end of the piston rod penetrates through the piston shaft and extends to the outside;

the movable connecting piece comprises a threaded connecting piece fixedly connected with the piston rod, and an outer movable sleeve and an inner movable sleeve which are sleeved on the outer side of the threaded connecting piece.

As a further optimization of the present invention, the accommodating barrel comprises an injector nipple, the front end of the injector nipple is provided with a sealing groove through a sealing rubber pad, and the injector nipple is provided with an accommodating groove for accommodating the needle.

As a further optimization scheme of the utility model, the front end of the inner cavity of the injection tube and the latex filling layer is arranged between the pistons

As a further optimization scheme of the utility model, offer the side opening that is used for absorbing the liquid medicine on the lateral wall of piston rod, just the side opening is located latex filling layer rear end in the injection tube.

As a further optimization scheme of the utility model, the nipple of the injector is detachably sleeved with a nipple cap for sealing.

As a further optimization scheme of the utility model, expanding spring's one end with a terminal surface fixed connection of piston, expanding spring's the other end with the lateral wall fixed connection of piston rod.

As a further optimization scheme of the utility model, outer movable sleeve with one side fixed arrangement of handle, interior movable sleeve with the outer end fixed arrangement of piston shaft, interior movable sleeve with movable block between the outer movable sleeve.

The beneficial effects of the utility model reside in that:

the syringe in this application can guarantee that the syringe needle can be taken in and hold a section of thick bamboo after the use, and need not to cover the syringe needle cap, has avoided the syringe among the prior art to cover the syringe needle cap after using and can arouse the syringe needle problem of stabbing, through arranging of latex filling layer and sealing rubber pad in addition, can also prevent dust pollution and the remaining problem of syringe needle liquid medicine in the external environment when the syringe needle is accomodate, just the utility model discloses simple structure, reasonable in design is convenient for realize.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic sectional view of the accommodating cylinder of the present invention;

FIG. 3 is a schematic sectional view of the movable connection member of the present invention;

fig. 4 is a sectional view of the needle of the present invention retracted into the accommodating cylinder.

In the figure: 1. an injection tube; 2. liquid medicine; 3. a latex filler layer; 4. a receiving cylinder; 5. a piston rod; 6. a movable connecting piece; 7. a handle; 8. a tension spring; 9. a piston; 10. a side hole; 41. a syringe nipple; 42. a needle head; 43. a sealing groove; 44. sealing the rubber pad; 45. a nipple cap; 61. a threaded connection; 62. an outer movable sleeve; 63. an inner movable sleeve.

Detailed Description

The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.

Example 1

As shown in fig. 1, a push type injector comprises an injection tube 1, a piston 9 and a piston shaft arranged in the injection tube 1, wherein a containing cylinder 4 is fixedly arranged at the front end of the injection tube 1, a latex filling layer 3 is filled at one end of the injection tube 1 close to the containing cylinder 4, the containing cylinder 4 is movably connected with the piston 9 through a piston rod 5, and the rear end of the piston rod 5 is provided with a handle 7 through a movable connecting piece 6;

the front end of the piston rod 5 is detachably connected with a needle 42, the piston rod 5 is sleeved with an extension spring 8, the rear end of the piston rod 5 penetrates through a piston shaft and extends to the outside, and the movable connecting piece 6 controls the moving direction of the piston rod 5 through the control handle 7 so as to control the position of the needle 42 in the accommodating barrel 4, so that medical staff can conveniently contact with the needle as little as possible, and puncture is avoided;

the movable connecting piece 6 comprises a threaded connecting piece 61 fixedly connected with the piston rod 5, and an outer movable sleeve 62 and an inner movable sleeve 63 which are sleeved outside the threaded connecting piece 61.

It should be noted that the threaded connector 61 includes a screw and a screw cap connected by a thread, when the handle 7 is rotated, the piston rod 5 is driven to move towards the front end of the syringe 1, the expansion spring 8 is gradually expanded, the needle 42 is slowly ejected from the accommodating cylinder 4, the side hole just reaches the position shown in fig. 1, and at this time, the screw and the screw of the threaded connector 61 are completely separated, so that the liquid medicine can be sucked by pulling the handle 7.

The advantage of providing the extension spring 8 is that: the needle head is prevented from being hidden in the accommodating barrel 4 and not being ejected out when the threaded connecting piece 61 is slipped or damaged, so that on one hand, the liquid medicine in the syringe can not be injected out, and the waste of the liquid medicine caused by the damage of equipment is prevented; on the other hand, the needle 42 can be taken out for reuse even if the threaded connector 61 is damaged in view of the fact that the needle 42 can be reused.

Specifically, the accommodating barrel 4 includes a syringe nipple 41, a sealing groove 43 is arranged at the front end of the syringe nipple 41 through a sealing rubber pad 44, an accommodating groove for accommodating the needle 42 is formed in the syringe nipple 41, and the sealing rubber pad 44 is arranged to prevent dust from entering the accommodating barrel 4 and polluting the needle 42.

Specifically, latex filling layer 3 has been arranged between 1 inner chamber front end of injection tube and the piston 9, and the setting of latex filling layer 3 prevents that pillow needle 42 and piston rod 5's junction from direct and 1 interior contact of injection tube, and the bacterium that leaves when can stop to change needle 42 like this produces the pollution to the liquid medicine.

Specifically, a side hole 10 for sucking the liquid medicine is formed in the side wall of the piston rod 5, and the side hole 10 is located in the injection tube 1 at the rear end of the latex filling layer 3.

Specifically, a nipple cap 45 for sealing is detachably sleeved on the syringe nipple 41.

Specifically, one end of the extension spring 8 is fixedly connected with one end face of the piston 9, and the other end of the extension spring 8 is fixedly connected with the side wall of the piston rod 5.

Specifically, the outer movable sleeve 62 is fixedly arranged on one side of the handle 7, the inner movable sleeve 63 is fixedly arranged on the outer end of the piston shaft, the inner movable sleeve 63 is movably clamped with the outer movable sleeve 62, the inner movable sleeve 63 and the outer movable sleeve 62 are arranged to limit the separation of the threaded connecting piece 61, and the inner movable sleeve 63 and the outer movable sleeve 62 can transmit pulling force to act on the piston rod 9 to achieve the purpose of sucking liquid medicine when the handle 7 is pulled.

As can be seen from a comparison of fig. 1 and 4, the length of the protrusion of the movable connection element 6 when the needle 42 is ejected is greater than the length of the protrusion of the needle 42 when it is retracted into the cartridge 4, due to the different needle positions.

It should be noted that when the needle 42 is ejected as shown in fig. 1, the handle 7 is pulled to suck the liquid medicine, and the nut and the screw of the threaded connector 61 are completely disengaged, so that the position of the needle 42 does not move with the position of the handle 7 in the state of the inner cylinder of the syringe.

The working principle is as follows: when the liquid medicine needs to be extracted, the injection tube 1 is as shown in fig. 4, the needle 42 is in the containing cavity of the containing tube 41, the telescopic spring 8 is in a compressed state at the moment, when the handle 7 is rotated, due to the existence of the threaded connecting piece 61, the outer movable sleeve 62 is movably clamped with the inner movable sleeve 63, so that when the handle 7 is rotated again, the piston rod 5 is driven to move towards the front end of the injection tube 1, the telescopic spring 8 is gradually stretched, the needle 42 is slowly popped out from the containing tube 4, the side hole just reaches the position shown in fig. 1 at the moment, the nut and the screw rod of the threaded connecting piece 61 are completely separated at the moment, so that the liquid medicine can be sucked by pulling the handle 7, after the injection tube is used, the piston 9 is only required to be pushed to the foremost end in the injection tube 1, at the moment, the nut and the screw rod of the threaded connecting piece 61 are lapped, and by rotating the handle 7, the piston rod 5 is driven to move towards the rear end of the injection tube 1, at this time, the extension spring 8 is gradually compressed, the needle 42 is slowly retracted into the accommodating barrel 1, and finally the nipple cap 45 is sleeved, so that the problems of needle puncture and residual needle pollution during use are avoided.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. The utility model provides a push type syringe, includes injection cylinder (1), locates piston (9) and the piston axle in injection cylinder (1), its characterized in that: a containing cylinder (4) is fixedly arranged at the front end part of the injection cylinder (1), a latex filling layer (3) is filled at one end of the injection cylinder (1) close to the containing cylinder (4), the containing cylinder (4) is movably connected with the piston (9) through a piston rod (5), and the rear end of the piston rod (5) is provided with a handle (7) through a movable connecting piece (6);

the front end of the piston rod (5) is detachably connected with a needle head (42), an expansion spring (8) is sleeved on the piston rod (5), and the rear end of the piston rod (5) penetrates through the piston shaft and extends to the outside;

the movable connecting piece (6) comprises a threaded connecting piece (61) fixedly connected with the piston rod (5), and an outer movable sleeve (62) and an inner movable sleeve (63) which are sleeved outside the threaded connecting piece (61).

2. The push type syringe of claim 1 wherein: the accommodating barrel (4) comprises an injector nipple (41), a sealing groove (43) is arranged at the front end of the injector nipple (41) through a sealing rubber pad (44), and an accommodating groove for accommodating the needle (42) is formed in the injector nipple (41).

3. The push type syringe of claim 2 wherein: the nipple (41) of the injector is detachably sleeved with a nipple cap (45) for sealing.

4. The push type syringe of claim 1 wherein: one end of the telescopic spring (8) is fixedly connected with one end face of the piston (9), and the other end of the telescopic spring (8) is fixedly connected with the side wall of the piston rod (5).

5. The push type syringe of claim 1 wherein: the outer movable sleeve (62) is fixedly arranged on one side of the handle (7), the inner movable sleeve (63) is fixedly arranged on the outer end of the piston shaft, and the inner movable sleeve (63) is movably clamped with the outer movable sleeve (62).

6. The push type syringe of claim 1 wherein: and an emulsion filling layer (3) is arranged between the front end of the inner cavity of the injection tube (1) and the piston (9).

7. The push type syringe of claim 1 wherein: a side hole (10) used for sucking liquid medicine is formed in the side wall of the piston rod (5), and the side hole (10) is located in the injection cylinder (1) at the rear end of the latex filling layer (3).