CN113456928A

CN113456928A - Push type high-pressure syringe

Info

Publication number: CN113456928A
Application number: CN202110773125.8A
Authority: CN
Inventors: 王宇飞; 李松徽; 黄建敬
Original assignee: Guangzhou Youwo Medical Equipment Co ltd
Current assignee: Guangzhou Youwo Medical Equipment Co ltd
Priority date: 2021-07-08
Filing date: 2021-07-08
Publication date: 2021-10-01
Anticipated expiration: 2041-07-08
Also published as: CN113456928B

Abstract

The invention discloses a pressing type high-pressure syringe, relates to medical instruments, and provides a scheme aiming at the problems that intermediate consumables and medicine are required to be consumed in the prior art. The method comprises the following steps: a machine head; a pressing mechanism is arranged in the machine head; a contraction cavity for accommodating the soft bag is arranged in the pressing mechanism, and the contraction cavity is provided with a soft bag connector for fixing a liquid outlet of the soft bag and an injection end for communicating the soft bag liquid outlet with the machine head; at least one side of the contraction cavity is provided with a first pressure cavity, the first pressure cavity is externally connected with a pressure pump through a first pressure conduit, and the first pressure cavity is used for pressing the contraction cavity to extrude the soft bag. The injection device has the advantages that 1, the soft bag is directly communicated with the injection end, and intermediate consumables are not consumed; 2. only one time of sterilization is needed when the soft bag is communicated with the injection end, so that the operation is convenient; 3. no transfer process loss exists, and the utilization rate of the noble-valence contrast agent is improved; 4. the contrast agent can be stored and transported by using a soft bag, so that the technical difficulty of falling and breaking resistance is reduced; 5. further reducing the production cost of the container.

Description

Push type high-pressure syringe

Technical Field

The invention relates to a medical instrument, in particular to a pressing type high-pressure injector.

Background

When an injection into a human body is required, a high-pressure injector is often used, for example, to inject a contrast medium at the time of TC examination. At present, contrast media are stored in hard bottles and are transferred to the injection end of a high-pressure injector through middle consumables such as hoses, syringes and the like.

The disadvantages are that: 1. the consumption of intermediate consumables is increased, and the cost of a medical institution is increased; 2. the operation is complicated, and the consumables are required to be sterilized independently every time the consumables are plugged and unplugged; 3. the transfer process inevitably causes medicine loss, and the contrast agent has high value and is an important factor for controlling the cost; 4. in order to prevent falling and breaking, the hard bottle needs to be additionally provided with shockproof consumables in storage and transportation, and the enterprise cost is increased; 5. the hard bottle is generally made of glass or pp materials, and the manufacturing cost is high.

Disclosure of Invention

The present invention is directed to a push type high pressure syringe, which solves the above problems of the prior art.

The invention relates to a push type high-pressure syringe, which comprises: a machine head; a pressing mechanism is arranged in the machine head; a contraction cavity for accommodating the soft bag is arranged in the pressing mechanism, and the contraction cavity is provided with a soft bag joint, a liquid outlet for fixing the soft bag and an injection end for communicating the soft bag liquid outlet with the machine head; at least one side of the contraction cavity is provided with a first pressure cavity which is externally connected with a pressure pump through a first pressure conduit, and the first pressure cavity is used for pressing the contraction cavity to extrude the soft bag.

The pressing type high-pressure syringe has the advantage of solving 5 problems in the prior art. 1. The soft bag is directly communicated with the injection end, and intermediate consumables are not consumed; 2. only one time of sterilization is needed when the soft bag is communicated with the injection end, so that the operation is convenient; 3. no transfer process loss exists, and the utilization rate of the noble-valence contrast agent is improved; 4. the contrast agent can be stored and transported by using a soft bag, so that the technical difficulty of falling and breaking resistance is reduced; 5. the use of a flexible bag as the container also further reduces the production cost of the container.

The contraction cavity and the first pressure cavity are sealed and divided through a first elastic membrane. Provides a specific pressing structure, and soft contact is beneficial to explosion prevention of a soft bag.

The other side of the contraction cavity, which is opposite to the first pressure cavity, is also provided with a second pressure cavity, the second pressure cavity is externally connected with a pressure pump through a second pressure conduit, and the second pressure cavity is used for pressing the contraction cavity to extrude the soft bag. The advantage lies in that both sides are exerted pressure simultaneously and are pressed more stably to the soft bag.

The contraction cavity and the second pressure cavity are sealed and divided through a second elastic membrane. Further provides a concrete pressing structure, and soft contact at two sides is more favorable for explosion prevention of the soft bag.

The pressing mechanism is also provided with an air inlet pipe and an air outlet pipe which are respectively communicated with the contraction cavity; the end parts of the air inlet pipe and the exhaust pipe, which are far away from the shrinkage cavity, are connected into an air path system, and the air path system is used for monitoring the air pressure difference of the air inlet pipe and the air outlet pipe in and out of the shrinkage cavity so as to judge the pressing fit degree of the shrinkage cavity to the soft bag. The method has the advantages that the goodness of fit change in the pressing process is monitored in real time, wrinkles are likely to appear in the pressing process due to contact, and the wrinkles can be found in time, so that the pressing pressure is adjusted to perform fine adjustment. In addition, whether the soft bag is installed stably can be checked when the soft bag is just installed.

The air inlet pipe is communicated with one end of the shrinkage cavity, which is far away from the soft bag joint, and the air outlet pipe is communicated with one end of the shrinkage cavity, which is near to the soft bag joint. A specific access structure of a gas circuit system is provided.

The pressing mechanism comprises a first cover body positioned at the upper part and a second cover body positioned at the lower part; the first cover body and the second cover body are detachably connected, and the first cover body and the second cover body jointly enclose the shrinkage cavity; one side of the first cover body close to the second cover body is provided with a first pressure cavity. Provided is a specific pressing mechanism mounting structure.

The first cover body and the second cover body are fixed or detached through a locking mechanism. Further provided is a specific pressing mechanism mounting structure.

The locking mechanism is a clamp or a buckle. Provides a specific locking mechanism implementation structure and is convenient to operate.

Drawings

FIG. 1 is a schematic view of a push type high pressure syringe according to the present invention.

Fig. 2 is a sectional view taken along line a-a in fig. 1.

Fig. 3 is a partially enlarged schematic view of fig. 2.

FIG. 4 is a schematic view showing the use state of the high-pressure syringe of the present invention.

Fig. 5 is a schematic view of the state of fig. 4 in which the contraction chamber is further compressed.

Reference numerals:

100-machine head;

200-a pressing mechanism, 201-a contraction cavity, 202-an air inlet pipe, 203-an air outlet pipe, 204-a locking mechanism and 205-a soft bag connector;

210-a first cover, 211-a first elastic membrane, 212-a first pressure chamber, 213-a first pressure conduit;

220-a second cover body, 221-a second elastic membrane, 222-a second pressure chamber, 223-a second pressure conduit;

300-soft bag.

Detailed Description

As shown in fig. 1-3, the structure of the push type high pressure syringe of the present invention includes a handpiece 100, and a push mechanism 200 disposed in the handpiece 100.

The pressing mechanism 200 includes a first cover 210 and a second cover 220 that are separable from each other. The first cover 210 and the second cover 220 are locked or unlocked by the locking mechanism 204, and the locking mechanism 204 may be a snap or a clip. The first cover 210 has a first pressure chamber 212 therein, and a lower end surface of the first cover 220 is closed by a first elastic film 211. In contrast, the second cover 220 has a second pressure chamber 222 therein, and the upper end surface of the second cover 210 is closed by a second elastic film 221. The first elastic membrane 211 and the second elastic membrane 221 may be flexible soft membranes such as silicone membrane or rubber membrane. Enclosed between first pressure chamber 212 and second pressure chamber 222 is a contracting chamber 201 for receiving and pressurizing a flexible bag 300. The shrinkage cavity 201 is provided with a soft bag connector 205 for fixing a liquid outlet of the soft bag 300 and for communicating the liquid outlet of the soft bag 300 with an injection end of the handpiece 100.

The external pressure pump is connected to the first pressure chamber 212 via a first pressure conduit 213 and to the second pressure chamber 222 via a second pressure conduit 223. The pressure pump is used for pressurizing or depressurizing the first pressure chamber 212 and/or the second pressure chamber 222, and the pressure pump can be a liquid pump or an air pump according to the use requirement, wherein the liquid pump is preferred. The pressure pump may be mounted within handpiece 100 or may be mounted external to handpiece 100.

An exhaust pipe 203 is arranged at one end of the pressing mechanism 200 close to the soft bag joint 205, and an air inlet pipe 202 is arranged at the other end far away from the soft bag joint 205. Preferably, the intake pipe 202 and the exhaust pipe 203 penetrate the first elastic membrane 211 and the second elastic membrane 221, respectively. For example, the air inlet pipe 202 penetrates the second elastic membrane 221, and the air outlet pipe 203 penetrates the first elastic membrane 211; or conversely, the exhaust pipe 203 penetrates the second elastic membrane 221, and the intake pipe 202 penetrates the first elastic membrane 211. The other ends of the exhaust pipe 203 and the air inlet pipe 202 are respectively connected to an air circuit system, and the air circuit system is used for monitoring the air pressure difference entering and exiting the shrinkage cavity 201 so as to judge the pressing fit degree of the shrinkage cavity 201 to the soft bag 300. When the goodness of fit is higher, the air resistance is larger, and the pressure difference between the inlet and the outlet is larger.

As shown in FIGS. 4 and 5, the operation of the push type high pressure syringe according to the present invention is as follows, the first cover 210 and the second cover 220 are disassembled, and the flexible bag 300 is placed in the contraction cavity 201. After the first cover 210 and the second cover 220 are assembled, they are fixed by the locking mechanism 204. The gas circuit system is started circularly, and the pressure difference between the two ends of the contraction cavity 201 is monitored in real time. The pressure pump is activated to pressurize first pressure chamber 212 and/or second pressure chamber 222 as desired. First elastic membrane 211 and/or second elastic membrane 221 are pressed toward retraction cavity 201, thereby forcing contrast media from flexible bag 300 out to the injection end. After injection, the pressure in the first pressure chamber 212 and/or the second pressure chamber 222 is released, and the air circuit system is stopped. The locking mechanism 204 is released, the first cover 210 is removed, the used flexible bag 300 is removed, and the pressing mechanism 200 is reloaded to be reset for the next operation.

It will be apparent to those skilled in the art that various other changes and modifications may be made in the above-described embodiments and concepts and all such changes and modifications are intended to be within the scope of the appended claims.

Claims

1. A push type high pressure syringe comprising: a handpiece (100); it is characterized in that a pressing mechanism (200) is arranged in the machine head (100);

a contraction cavity (201) used for accommodating the soft bag (300) is arranged in the pressing mechanism (200), and the contraction cavity (201) is provided with a soft bag connector (205) used for fixing a liquid outlet of the soft bag (300) and an injection end used for communicating the liquid outlet of the soft bag (300) with the machine head (100);

at least one side of the shrinkage cavity (201) is provided with a first pressure cavity (212), the first pressure cavity (212) is externally connected with a pressure pump through a first pressure conduit (213), and the first pressure cavity (212) is used for pressing the shrinkage cavity (201) to extrude the soft bag (300).

2. The push type high pressure syringe as claimed in claim 1, wherein the contracting chamber (201) is sealed and divided from the first pressure chamber (212) by a first elastic membrane (211).

3. The push type high pressure syringe as claimed in claim 1, wherein a second pressure chamber (222) is further provided on the opposite side of the contracting chamber (201) from the first pressure chamber (212), the second pressure chamber (222) is externally connected to a pressure pump through a second pressure conduit (223), and the second pressure chamber (222) is used for pushing the contracting chamber (201) to squeeze the flexible bag (300).

4. The push type high pressure syringe as claimed in claim 3, wherein the contracting chamber (201) is sealed and divided from the second pressure chamber (222) by a second elastic membrane (221).

5. The push type high pressure syringe of claim 1, wherein the push mechanism (200) further comprises an air inlet tube (202) and an air outlet tube (203) respectively connected to the contracting cavity (201); the end parts of the air inlet pipe (202) and the air outlet pipe (203) far away from the contraction cavity (201) are connected into an air path system, and the air path system is used for monitoring the air pressure difference entering and exiting the contraction cavity (201) so as to judge the pressing fit degree of the contraction cavity (201) to the soft bag (300).

6. The push type high pressure syringe as claimed in claim 5, wherein the air inlet tube (202) is connected to the end of the contraction cavity (201) far away from the soft bag connector (205), and the air outlet tube (203) is connected to the end of the contraction cavity (201) near the soft bag connector (205).

7. The push type high pressure syringe of claim 1 wherein the push mechanism (200) comprises a first cap (210) at an upper portion and a second cap (220) at a lower portion; the first cover body (210) and the second cover body (220) are detachably connected, and the first cover body (210) and the second cover body (220) jointly enclose the shrinkage cavity (201); a first pressure cavity (212) is arranged on one side of the first cover body (210) close to the second cover body (220).

8. The push type high pressure syringe of claim 7 wherein the first cap (210) and the second cap (220) are fixed or removable by a locking mechanism (204).

9. The push type high pressure syringe of claim 8 wherein the locking mechanism (204) is a clip.

10. The push type high pressure syringe of claim 8 wherein the locking mechanism (204) is a snap fit.