CN219763475U - Injection syringe - Google Patents

Abstract

The utility model discloses an injector, which comprises an injection cylinder, wherein one end of the injection cylinder is provided with a push rod, the other end of the injection cylinder is detachably connected with the proximal end of a thrombolysis catheter, the front end of a liquid storage cavity of the injection cylinder is provided with a two-way check valve, a liquid inlet channel and an injection channel which are communicated with the liquid storage cavity are formed through the two-way check valve, the push rod slides in the direction away from the other end, the two-way check valve closes the injection channel, the liquid storage cavity is communicated with the liquid inlet channel, liquid medicine enters the liquid storage cavity, the push rod slides in the direction close to the other end, the two-way check valve closes the liquid inlet channel, the liquid storage cavity is communicated with the injection channel, and the liquid medicine is injected into the catheter from the liquid storage cavity. The injector provided by the utility model has the advantages of simple structure, low cost, convenience in use and strong practicability.

Description

Injection syringe

Technical Field

The utility model relates to an injector, which can be used for injecting liquid medicine when the catheter contact thrombolysis operation is used for treating thrombus.

Background

The catheter contact thrombolysis is usually used for plugging the tail end of a catheter, and the liquid medicine is filled into a human body in a pressurized injection mode, so that the pulse flow of the liquid medicine from the side hole of the catheter is ensured, the flowing liquid medicine washes the affected part, and finally the purpose of dissolving thrombus is achieved.

At present, most of thrombus thrombolysis catheter devices are filled with liquid medicine through a hand-push injector, a relatively slender catheter is connected in front of the device, when the hand-push injector is used for thrombolysis treatment of blood, the pressure is small, uncontrollable and incapable of being continuously operated for a long time, so that thrombolysis effect is affected, and the hand-push handle is long in time and high in frequency, has high operation strength, and is easy for medical staff to be tired.

In order to solve the above problems, the prior art discloses an injector with publication number CN214807467U and an automatic injection device for catheter thrombolysis with publication number CN218279738U, and the above devices are convenient and fast to use, but have relatively complex structure, high manufacturing cost and poor practicality.

Disclosure of Invention

The utility model provides an injector, which is simple in structure, low in production cost and convenient to use by improving the existing injection device.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the utility model provides an injector, includes the injection tube, the one end of injection tube sets up the push rod, and the other end of injection tube can be dismantled with the proximal end of thrombolysis pipe and be connected, the stock solution chamber front end of injection tube sets up two-way check valve, through two-way check valve forms feed liquor runner and the injection runner with the stock solution chamber intercommunication, the push rod is to keeping away from the direction of the other end slides, two-way check valve closes the injection runner, the stock solution chamber is with feed liquor runner intercommunication, the liquid medicine gets into the stock solution chamber, the push rod is to being close to the direction of the other end slides, two-way check valve closes the feed liquor runner, stock solution chamber and injection runner intercommunication, the liquid medicine is poured into the pipe from the stock solution chamber.

Preferably, the outer end part of the push rod is provided with a handle, so that the operation is convenient.

Preferably, one end of the injection cylinder is provided with a detachable end cover, the push rod penetrates through the center of the end cover, the other end of the push rod is provided with a piston, and the piston slides in the liquid storage cavity.

Preferably, the end cover protrudes out of the syringe design, which is convenient for one-hand operation and limits the piston from sliding out of the liquid storage cavity.

Preferably, a spring is sleeved at one end of the push rod, and the piston returns after pulse pouring is realized by pressing the push rod.

Preferably, one end of the injection cylinder is provided with an injection tube cavity and a liquid inlet tube cavity, the injection tube cavity comprises a horizontal section and a vertical section which are integrally formed, a two-way check valve is arranged at the joint of the vertical section and the liquid inlet tube cavity, and a pipeline at the front end of the liquid storage cavity is communicated with the two-way check valve.

Preferably, the other end of the injection tube is detachably connected with the proximal end of the thrombolysis catheter by a 6% luer connector.

Preferably, the end part of the liquid inlet pipe cavity is provided with a 6% luer connector which is detachably connected with a syringe or a liquid storage bag.

Preferably, the injection cylinder is provided with a hanging lug, and the hanging lug is provided with a detachable elastic rubber ring for fastening the injector, in particular to a plug-in injector.

The utility model has the beneficial effects that:

by adopting the technical scheme, the liquid medicine is effectively controlled to flow unidirectionally along the passage by arranging the bidirectional check valve at the flow passage, so that backflow is prevented; when the device is operated, the handle is pressed, the piston push rod can return due to the arrangement of the spring, and pulse pouring can be realized by continuous pressing; the design of the handle and the limit cover is convenient for single-hand operation, and is easy and labor-saving.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art and the advantageous effects of the present utility model, the drawings required in the embodiments or the description of the prior art will be briefly described, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other structures may be obtained according to the structures shown in the drawings without inventive effort to those skilled in the art.

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a cross-sectional view of the present utility model.

Fig. 3 is a schematic view of a liquid inlet structure.

Fig. 4 is a schematic view of an injection structure.

Reference numerals illustrate: the syringe comprises a syringe barrel-1, a hanging lug-2, an elastic rubber ring-3, an end cover-4, a push rod-5, a handle-6, a spring-7, a 6% luer connector-8, a 6% luer connector-9, a piston-10, a two-way check valve-11, a liquid inlet pipe cavity-12, a liquid storage cavity-13 and an injection pipe cavity-14.

Detailed Description

Specific examples of the utility model:

as shown in fig. 1-4, the injector of the present embodiment is used in combination with a thrombolytic catheter, and the specific structure comprises a syringe 1, a hanger 2, an elastic rubber ring 3, an end cover 4, a push rod 5, a handle 6, a spring 7, a first 6% luer connector 8, a second 6% luer connector 9, a piston 10, a two-way check valve 11, a liquid inlet pipe cavity 12, a liquid storage cavity 13 and an injection pipe cavity 14.

The one end of syringe 1 sets up push rod 5, and the other end of syringe can dismantle with the proximal end of thrombolysis pipe and be connected, the stock solution chamber 13 front end of syringe sets up two-way check valve 11, through two-way check valve forms feed liquor runner and the injection runner with the stock solution chamber intercommunication, the push rod is to keeping away from the direction of the other end slides, two-way check valve closes the injection runner, the stock solution chamber communicates with the feed liquor runner, and the liquid medicine gets into the stock solution chamber, the push rod is to being close to the direction of the other end slides, two-way check valve closes the feed liquor runner, stock solution chamber and injection runner intercommunication, the liquid medicine is poured into the pipe from the stock solution chamber.

The outer end of the push rod is provided with a handle 6.

One end of the injection cylinder is provided with a detachable end cover 4, the push rod penetrates through the center of the end cover, the other end of the push rod is provided with a piston, and the piston slides in the liquid storage cavity.

The end cap protrudes from the syringe design.

And one end of the push rod is also sleeved with a spring 7, and the piston returns after pulse pouring is realized by pressing the push rod.

One end of the injection tube is provided with an injection tube cavity 14 and a liquid inlet tube cavity 12, the injection tube cavity comprises a horizontal section and a vertical section which are integrally formed, a two-way check valve is arranged at the joint of the vertical section and the liquid inlet tube cavity, the two-way check valve in the embodiment adopts a cylindrical silica gel valve, the cylindrical silica gel valve is arranged in a cavity at the joint of the vertical section and the liquid inlet tube cavity, and a pipeline at the front end of the liquid storage cavity is communicated with the cavity.

The syringe lumen 14 terminates in a 6% luer fitting one, through which the syringe barrel is removably connected to the proximal end of the thrombolytic catheter.

The end of the liquid inlet pipe cavity is provided with a second 6% luer connector, and the injection cylinder is detachably connected with the injector or the liquid storage bag through the second 6% luer connector.

The injection tube is provided with a hanging lug, and the hanging lug is provided with a detachable elastic rubber ring which is used for providing upward force when being connected with the plug-in type injector so as to enable the connection to be tighter.

The working principle of the utility model is as follows:

the injection cylinder 1 is formed by injection molding of polypropylene, the two-way check valve is a cylindrical silica gel valve so as to control the liquid medicine to flow unidirectionally, backflow is prevented, the handle is pressed once, and medicines firstly enter the liquid storage cavity along the liquid inlet passage and then are infused to a target position along the injection passage.

When the catheter contact thrombolysis operation is carried out, the first 6% luer connector is connected with a thrombolysis catheter, the second 6% luer connector is connected with a syringe or a liquid storage bag filled with thrombolytic medicine, the handle is pressed, when the push rod slides towards the direction far away from the other end of the injection cylinder, the two-way check valve closes the injection flow channel, the liquid storage cavity is communicated with the liquid inlet flow channel, the thrombolytic medicine enters the liquid storage cavity, the push rod slides towards the direction near the proximal end of the catheter, the two-way check valve closes the liquid inlet flow channel, the liquid storage cavity is communicated with the injection flow channel, and the thrombolytic medicine is injected into the catheter from the liquid storage cavity.

The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the scope of the utility model, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.

Claims (8)

1. The utility model provides an injector, its characterized in that, includes the injection tube, the one end of injection tube sets up the push rod, and the other end of injection tube can be dismantled with the proximal end of thrombolysis pipe and be connected, the liquid storage chamber front end of injection tube sets up two-way check valve, through two-way check valve forms the feed liquor runner and the injection runner with the liquid storage chamber intercommunication, the spring is established to the one end cover of push rod, the push rod is to keeping away from the direction of other end slides, two-way check valve closes the injection runner, liquid storage chamber and feed liquor runner intercommunication, the liquid medicine gets into the liquid storage chamber, the push rod is to being close to the direction of other end slides, two-way check valve closes the feed liquor runner, liquid storage chamber and injection runner intercommunication, the liquid medicine is injected into the pipe from the liquid storage chamber, the one end of injection tube sets up injection tube chamber, feed liquor tube chamber, injection tube chamber includes integrated into horizontal segment, vertical segment, and vertical segment and feed liquor tube junction set up two-way check valve, the pipeline intercommunication of liquid storage chamber front end sets up two-way check valve.

2. The syringe of claim 1, wherein the outer end of the push rod is provided with a handle.

3. The syringe of claim 2, wherein one end of the syringe barrel is provided with a removable end cap, the push rod is disposed through the center of the end cap, and the other end of the push rod is provided with a piston, and the piston slides in the liquid storage cavity.

4. A syringe according to claim 3, wherein the end cap protrudes from the syringe design.

5. The syringe of claim 4, wherein the other end of the syringe barrel is removably connected to the proximal end of the thrombolytic catheter with a 6% luer fitting.

6. The syringe of claim 5, wherein the inlet lumen end is provided with a 6% luer fitting.

7. The syringe of claim 6, wherein the syringe barrel is provided with a hanging ring, and a detachable elastic rubber ring is arranged on the hanging ring.

8. The syringe of claim 7, wherein the bi-directional check valve comprises a cylindrical silicone valve.