CN210494783U

CN210494783U - Disposable anti-reflux injection needle for endoscope

Info

Publication number: CN210494783U
Application number: CN201920042549.5U
Authority: CN
Inventors: 张锋; 陈敏芳
Original assignee: First Hospital of Jiaxing
Current assignee: First Hospital of Jiaxing
Priority date: 2019-01-10
Filing date: 2019-01-10
Publication date: 2020-05-12
Anticipated expiration: 2029-01-10

Abstract

The utility model provides a disposable anti-refluence syringe needle for scope, include syringe needle (8) for the scope, first input tube (2), second input tube (5) and output tube (4), the front end of first input tube is linked together with the tail end of output tube, the front end of second input tube is linked together with the tail end of output tube, the front end of output tube is continuous syringe needle for the scope, there is one check valve (3) of opening to the infusion direction in the first input tube, there is one check valve (7) of opening to the infusion direction in the second input tube. The first input tube and the second input tube are respectively connected with the iodized oil injector and the tissue glue injector, when the sandwich injection method is operated, the one-way valves in the first input tube and the second input tube can automatically finish the separation of the liquid medicine in the injection needle and the liquid medicine in the injector when respectively pushing the iodized oil and the tissue glue, the operation time can be saved, the required liquid medicine is ensured to quickly enter the blood vessel through the injection needle, and the treatment effect is achieved.

Description

Disposable anti-reflux injection needle for endoscope

Technical Field

The utility model relates to a structure of a medical appliance, in particular to a disposable anti-reflux injection needle for an endoscope.

Background

When treating fundoplical esophageal varices endoscopically, it is sometimes necessary to block variceal veins by injecting a tissue gel intravenously using a "sandwich injection method. The existing injection needle for the disposable endoscope is not provided with a tee joint, so that two people are required to operate and connect and cooperate to alternately use two injectors to inject when injecting tissue glue: the injection needle is prefilled with 1mL of iodized oil, a vein injection point is selected after a doctor enters a microscope, the injection needle penetrates into a vein and uniformly injects 0.5-2 mL/point of mixed liquid of 1: 1 of iodized oil and a tissue adhesive, the injection is carried out while the milliliter number is reported, after the tissue adhesive is pushed, the injector which is well pumped with the iodized oil is quickly connected, then the 1.2mL of iodized oil is pushed to push the mixed liquid of the tissue adhesive in the injection needle into the vein, and the tissue adhesive can immediately generate polymerization reaction when meeting water, electrolyte solution or blood to form hard solid polymer to block the varicose vein, thereby achieving the treatment effect. The two people need to be matched quickly, and the action needs to be accurate and quick during operation so as to avoid the blockage of the injection needle. If the three-way is installed on the injection needle, the operation can be completed by one person: one inlet of the three-way switch is connected with the iodized oil injector, the other inlet of the three-way switch is connected with the tissue glue injector, and an operator needs to manually rotate the three-way switch to switch after pushing the tissue glue. At present, no disposable endoscope injection needle capable of completing the operation without manually rotating a three-way switch exists.

Disclosure of Invention

The utility model aims at providing a disposable structure of preventing flowing backwards syringe needle for scope, do not need manual rotatory three way switch just can accomplish "sandwich injection method operation.

The disposable anti-reflux injection needle for the endoscope comprises an injection needle for the endoscope, a first input tube, a second input tube and an output tube, wherein the front end of the first input tube is communicated with the tail end of the output tube, the front end of the second input tube is communicated with the tail end of the output tube, the front end of the output tube is connected with the injection needle for the endoscope, a first one-way valve which is opened towards the infusion direction is arranged in the first input tube, and a second one-way valve which is opened towards the infusion direction is also arranged in the second input tube.

When the injection needle for the disposable anti-reflux endoscope is used for carrying out sandwich injection method operation, the first input tube and the second input tube are respectively connected with the iodized oil injector and the tissue glue injector, and the first input tube and the second input tube are respectively provided with the one-way valve, so that when the iodized oil and the tissue glue are respectively pushed, the separation of liquid medicine in the injection needle and liquid medicine in the injector can be automatically finished, the time for rotating the three-way switch or the connection time for the matching operation of two persons is saved, the required liquid medicine can be ensured to quickly enter blood vessels through the injection needle, and the treatment effect is achieved.

Drawings

FIG. 1 is an overall structure view of the disposable anti-reverse flow endoscopic injection needle of the present invention;

FIG. 2 is a first block diagram of a tee in a disposable anti-reflux endoscopic injection needle;

FIG. 3 is a side cross-sectional view of a first one-way valve;

FIG. 4 is a front view of the one-way valve shown in FIG. 3;

FIG. 5 is a side cross-sectional view of a second one-way valve;

FIG. 6 is a front elevational view of the one-way valve illustrated in FIG. 5;

FIG. 7 is a second structure view of the tee in the disposable anti-reflux endoscopic injection needle:

FIG. 8 is a view showing the construction of the four-way joint in the disposable anti-reflux endoscopic injection needle;

fig. 9 is a five-way structure diagram of the injection needle for the disposable anti-reflux endoscope.

Detailed Description

As shown in figures 1 and 2, the disposable anti-reflux endoscope injection needle comprises an endoscope injection needle 8, a first input tube 2, a second input tube 5 and an output tube 4, wherein the front end of the first input tube is communicated with the tail end of the output tube, the front end of the second input tube is communicated with the tail end of the output tube, the first input tube, the second input tube and the output tube form a tee joint, the front end of the output tube 4 is connected with the endoscope injection needle 8, and 9 is a needle point. The first inlet pipe 2 is provided with a first one-way valve 3 which is opened towards the transfusion direction, and the second inlet pipe 5 is provided with a second one-way valve 7 which is opened towards the transfusion direction. In the figure, 1 is a connecting nut for the inlet of the

first input pipe

2, and 6 is a connecting nut for the inlet of the second input pipe 5.

The first input tube 2 and the second input tube 5 of the injection needle for the disposable anti-reflux endoscope are respectively connected with an iodized oil injector and a tissue glue injector, in the operation process of a sandwich injection method, liquid medicine can only flow into the output tube 4 through the one-

way valve

3 or 7 and can not flow reversely, when the iodized oil and the tissue glue are respectively pushed, the liquid in the injection needle can be automatically separated from the liquid in the injector by the one-

way valve

3 or 7, the valve does not need to be rotated manually, the connection time of two-person operation or the time of rotating the three-way switch is saved, the operation can be faster, and a good treatment effect is achieved.

The one-way valve in the disposable anti-reflux endoscope injection needle can be of two types, one type is a structure shown in figures 3 and 4, and is a semi-spherical flap 11 fixed on a tube wall 10, the semi-spherical flap is divided into three and four flaps, and the three flaps in the figure can only be opened in one direction. The other is the structure shown in fig. 5 and 6, which is a disk 13 with a hole in the center, the periphery of the disk is fixed with the pipe wall 10, the surface of the disk 13 on the side of the output pipe is covered with a membrane 12, and the membrane 12 can only be opened in one direction.

The first inlet pipe 2, the second inlet pipe 5 and the outlet pipe 4 in fig. 1 and 2 are connected to form a T-shaped structure. The first inlet pipe 2, the second inlet pipe 5 and the outlet pipe 4 may also be connected in a Y-shaped configuration as shown in fig. 7.

The three-way joint formed by the input pipe and the output pipe can also be made into an independent part and combined with the injection needle when in use.

The three-way component in the disposable anti-reflux endoscope injection needle can also be applied to severe patients needing to be pumped by a micropump by using various medicines, and can effectively prevent blood from flowing back due to cracking at the joint of the piezometer tube and the three-way; can also be used when temporarily adding drugs during anesthesia.

As shown in fig. 8, the disposable anti-reflux endoscope injection needle can further comprise a third input tube 15, the front end of the third input tube is communicated with the tail end of the output tube 4, and a third one-way valve 16 which opens towards the transfusion direction is arranged in the third input tube 15. In this configuration, three inlet pipes and three outlet pipes form a cross-section, and in the figure 14, the connecting nut for the inlet of the third inlet pipe 15 is shown.

As shown in fig. 9, the disposable anti-reflux endoscope injection needle may further comprise a fourth inlet tube 18, a front end of which is communicated with a rear end of the outlet tube 4, and a fourth one-way valve 19 opened in the infusion direction is provided in the fourth inlet tube 18. In this configuration, four inlet pipes and four outlet pipes form a five-way joint, and 17 is a connecting nut for the inlet of the fourth inlet pipe 18.

The four-way or five-way valve shown in fig. 8 and 9 can be made into an independent part, and can also be used for other occasions that more than two medicines are injected respectively.

The input tube and the output tube of the injection needle for the disposable anti-reflux endoscope can be made of transparent plastics, so that the flowing state and position of liquid medicine can be observed conveniently during injection.

Claims

1. The utility model provides a disposable anti-refluence syringe needle for scope, include syringe needle (8) for the scope, characterized by still includes first input tube (2), second input tube (5) and output tube (4), the front end of first input tube is linked together with the tail end of output tube, the front end of second input tube is linked together with the tail end of output tube, syringe needle (8) for the scope are being even connected to the front end of output tube (4), there is first check valve (3) of opening to the infusion direction in first input tube (2), there is second check valve (7) of opening to the infusion direction in second input tube (5).

2. A disposable anti-reflux endoscope injection needle according to claim 1, characterized in that it further comprises a third inlet tube (15), the front end of which communicates with the rear end of the outlet tube (4), the third inlet tube (15) having a third one-way valve (16) opening in the direction of infusion.

3. A disposable anti-reflux endoscope injection needle according to claim 2, characterized in that it further comprises a fourth inlet tube (18) whose front end is in communication with the rear end of the outlet tube (4), the fourth inlet tube (18) having a fourth one-way valve (19) opening in the direction of infusion.