CN218419988U - Puncture cannula assembly for interventional therapy - Google Patents

Abstract

The utility model discloses an intervene treatment with puncture sleeve subassembly, this subassembly includes pjncture needle, syringe needle, optionally, adds interior sleeve pipe between pjncture needle and syringe needle. The utility model discloses a puncture cannula subassembly can be more effectual injects the medicine into focus department, can also avoid the medicine to be diluted by the body fluid, guarantees the effect of treatment.

Description

Puncture cannula assembly for interventional therapy

Technical Field

The utility model belongs to the technical field of medical instrument, especially, relate to an intervene treatment and use thimble assembly.

Background

Interventional therapy is a new subject which is developed rapidly in recent years and integrates image diagnosis and clinical therapy, and is a minimally invasive therapy which is carried out by introducing specific instruments into a diseased part of a human body through natural pores or tiny wounds of the human body by using puncture needles, catheters and other interventional instruments under the guidance and monitoring of digital subtraction angiography, CT, ultrasound, magnetic resonance and other imaging devices.

There are many drugs for interventional therapy, such as anhydrous ethanol, docetaxel, paclitaxel, doxorubicin, cyclophosphamide, etc. Taking absolute ethyl alcohol injection as an example, the principle of injection therapy of liver cancer is that under the guidance of B-ultrasonic or CT, chemical ablation agents such as ethyl alcohol are injected into vascular endothelial cells in the center and near the tumor, so that the liver cancer cells are rapidly dehydrated, and protein is coagulated and denatured, thereby destroying the tumor cells; meanwhile, endothelial cells of the vascular wall in the tumor tissue are also degenerated and necrotized, and then thrombosis is formed, so that the tumor is ischemic and necrotized.

The percutaneous injection medicine therapy needle for clinical treatment at present comprises a therapy needle, an extension tube and an induction tube, and has the main defects that: although the focus can be injected with drugs, the problem is caused that during the puncture process, body fluid can enter the therapy needle, so that the drugs are diluted, and the treatment effect is not ideal! There is therefore a need for a puncture cannula assembly that ensures that the drug is not diluted for use in interventional procedures.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an intervene treatment with puncture sleeve subassembly to solve the problem that proposes in the above-mentioned background art.

In order to realize the purpose, the utility model adopts the technical proposal that:

a puncture cannula assembly for interventional therapy comprises a puncture needle and an injection needle, and an inner cannula is optionally arranged between the puncture needle and the injection needle; the puncture needle consists of a puncture needle core and a puncture needle core connecting seat; wherein the puncture needle core is of a hollow structure, the front end of the puncture needle core is closed, and the tail end of the puncture needle core is provided with a connecting seat; the injection needle consists of an injection needle core, an injection needle core connecting seat and a fibrous conduit; wherein the injection needle core is a hollow structure, the outer diameter of the injection needle core is smaller than the inner diameter of the puncture needle core, the head of the injection needle core is easy to penetrate, and the tail end of the injection needle core is provided with a connecting seat and is connected with the fibrous conduit;

further, the front end of the puncture needle is sealed, the end part of the puncture needle core is directly sealed by adopting a medical degradable material, optionally, the front end is sealed by adopting an inner sleeve with one sealed end to be combined with the puncture needle, and the puncture needle and the inner sleeve are shorter than the injection needle in length.

Furthermore, the length of the injection needle is larger than that of the puncture needle, so that the injection needle can conveniently penetrate through the closed end of the puncture needle to reach a focus part.

Furthermore, the head of the injection needle is easy to penetrate, and is a slotted triangular cone or a flat opening on the head, so that the liquid medicine can be conveniently and effectively injected into a focus part.

Furthermore, the thickness of the closed end of the puncture needle is controlled to be 0.01 to 3mm, so that the injection needle is easy to penetrate.

Further, the front ends of the puncture needle core connecting seat and the injection needle core connecting seat are inserted into the tails of the puncture needle core and the injection needle core in an interference fit manner, and the rear ends of the puncture needle core connecting seat and the injection needle core connecting seat 22 are used for connecting with an injector or a fibrous catheter.

Further, the puncture cannula assembly can be used for injecting drugs during interventional therapy, and the injected drugs include but are not limited to absolute ethyl alcohol, docetaxel, paclitaxel, doxorubicin, cyclophosphamide and the like.

Furthermore, the inner sleeve is of a hollow structure, the front end of the inner sleeve is closed, the rear end of the inner sleeve is opened, the outer diameter of the inner sleeve is smaller than the inner diameter of the puncture needle and larger than the inner diameter of the injection needle, and the inner sleeve and the puncture needle core can be used in a nested mode.

Furthermore, the outer walls of the puncture needle core and the inner sleeve are provided with marking lines.

The utility model has the advantages as follows:

the utility model discloses a to the closure of puncture needle front end, ensured that the syringe needle can't get into inside the syringe needle at puncture in-process body fluid.

The utility model discloses a to the thickness control of puncture needle blind end, make the syringe needle easily pierce through, both avoided absolute ethyl alcohol to be diluted by the body fluid, also guaranteed the effect of treatment, the through focus.

The utility model can easily penetrate and disperse the head of the injection needle, and is a grooved triangular cone or a flat opening on the head, so that the liquid medicine can be effectively injected into the focus.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of embodiment 2 of the present invention;

labeled as: 1 puncture needle, which consists of a 11 puncture needle core and a 12 puncture needle core connecting seat; 2 the injection needle consists of an injection needle core 21, an injection needle core connecting seat 22 and a fibrous catheter 23; 3 inner sleeve (one end closed).

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the scope of the present invention.

Example 1:

as shown in fig. 1, a puncture cannula assembly for interventional therapy comprises a puncture needle 1, a needle 2 and an inner cannula 3. The puncture needle 1 consists of a puncture needle core 11 and a puncture needle core connecting seat 12; wherein the puncture needle core 11 is a hollow structure, the front end is closed, and the tail end is provided with a connecting seat 12; the injection needle 2 consists of an injection needle core 21, an injection needle core connecting seat 22 and a fibrous conduit 23; the injection needle core 21 is a hollow structure, the outer diameter of the injection needle core is smaller than the inner diameter of the puncture needle core, the front end of the injection needle core is sharp, the head part of the injection needle core is a slotted triangular cone, and the tail end of the injection needle core is provided with a connecting seat 22 which is connected with a fibrous conduit 23. The inner sleeve 3 is closed at one end and open at the other end. The closed front end of the puncture needle is formed by nesting the puncture needle and an inner sleeve 3.

In the puncture cannula assembly, the puncture needle core is made of stainless steel materials, and the inner cannula is made of biodegradable materials.

The utility model discloses an operating method: firstly, an inner sleeve 3 and a puncture needle 1 are combined in an embedded mode, the inner sleeve 3 is inserted into a puncture needle core, the puncture needle core and a marking line on the outer wall of an inner sleeve are combined, the closed end of the inner sleeve is guaranteed to be basically level with the needle point of the puncture needle core, the effect of closing the front end of the puncture needle is achieved, then the puncture part is determined to puncture under the guidance of B ultrasonic or CT, after the puncture needle reaches a focus position, an injection needle which is connected with an injector and is filled with medicines penetrates through the closed end of the inner sleeve to be inserted into the focus, and the medicines can be ejected in an umbrella shape during injection through a triangular conical needle head with a groove, so that treatment is completed, and the effect of dilution of body fluid on the medicines is further avoided, and the curative effect is influenced.

Example 2:

as shown in fig. 2, a puncture cannula assembly for interventional therapy comprises a puncture needle 1 and a needle 2. The puncture needle 1 consists of a puncture needle core 11 and a puncture needle core connecting seat 12; wherein the puncture needle core 11 is a hollow structure, the front end is closed, and the tail end is provided with a connecting seat 12; the injection needle 2 consists of an injection needle core 21, an injection needle core connecting seat 22 and a fibrous conduit 23; the injection needle core 21 is a hollow structure, the outer diameter of the injection needle core is smaller than the inner diameter of the puncture needle core, the head of the injection needle core is provided with a flat opening, and the tail end of the injection needle core is provided with a connecting seat 22 which is connected with a fibrous conduit 23.

In the puncture cannula assembly, the puncture needle core is made of medical degradable plastic materials.

The utility model discloses an operating method:

the puncture position is determined to puncture under the guidance of B-ultrasonic or CT, after the puncture needle 1 with the closed front end reaches the focus position, the injection needle 2 which is connected with an injector and is provided with medicine penetrates the closed end from the puncture needle 1 to be inserted into the focus, and the medicine can be evenly sprayed out during injection through the needle head with the flat opening, thereby completing the treatment, and further avoiding the dilution of the medicine by body fluid to influence the curative effect.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the scope of the present invention in any way, and all technical solutions obtained by using equivalent substitution and the like fall within the scope of the present invention.

The utility model discloses the part that does not relate to all is the same with prior art or can adopt prior art to realize.

Claims (9)

1. A puncture cannula assembly for interventional therapy is characterized in that:

including pjncture needle (1), syringe needle (2), optionally, add interior sleeve pipe (3) between pjncture needle and syringe needle, pjncture needle (1) comprises puncture nook closing member (11) and puncture nook closing member connecting seat (12), and wherein puncture nook closing member (11) is hollow structure, and the front end is sealed, and the tail end is equipped with connecting seat (12), can connect the syringe, syringe needle (2) comprise syringe nook closing member (21), syringe nook closing member connecting seat (22) and fibrous pipe (23), and wherein syringe nook closing member (21) is hollow structure, and its external diameter is less than the internal diameter of puncture nook closing member, and syringe needle core head easily pierces through, and the tail end is equipped with connecting seat (22) to be connected with fibrous pipe (23), interior sleeve pipe (3) are one end and seal, one end opening.

2. A puncture cannula assembly for interventional therapy according to claim 1, characterized in that the puncture needle (1) is closed at its front end, the end of the puncture needle core is directly closed with a medical degradable material, optionally, a cannula (3) with one end closed is combined with the puncture needle to realize the front end closure, and the puncture needle (1) and the cannula (3) are shorter than the injection needle (2).

3. A puncture cannula assembly for interventional procedures according to claim 1, characterized in that the length of the injection needle (2) is greater than the length of the puncture needle (1) to facilitate penetration of the puncture needle closed end to the lesion site.

4. A puncture cannula assembly for interventional therapy according to claim 1, characterized in that the head of the injection needle (2) is easily penetrated and dispersed, and is a slotted triangular cone or a flat head opening, so as to facilitate the effective injection of the medical solution into the lesion site.

5. A puncture cannula assembly for interventional therapy according to claim 1, characterized in that the thickness of the closed end of the puncture needle (1) is controlled to be 0.01mm to 3mm for easy penetration of the injection needle (2).

6. The puncture cannula assembly for interventional therapy according to claim 1, wherein the front ends of the puncture needle core connecting seat (12) and the injection needle core connecting seat (22) are inserted into the tail portions of the puncture needle core (11) and the injection needle core (21) in an interference fit manner, and the rear ends of the puncture needle core connecting seat (12) and the injection needle core connecting seat (22) are used for connecting with an injector or a fibrous catheter.

7. The interventional procedure cannula assembly of claim 1, wherein the insertion device is configured for injection of a drug during an interventional procedure, the drug being absolute ethanol, docetaxel, paclitaxel, doxorubicin, or cyclophosphamide.

8. The puncture cannula assembly for interventional therapy according to claim 1, characterized in that the inner cannula (3) is a hollow structure with a closed front end and a thickness controlled within 0.01mm to 3mm, and an open rear end, and the outer diameter of the inner cannula is smaller than the inner diameter of the puncture needle (1) and larger than the inner diameter of the injection needle (2), and can be used in a nested manner with the puncture needle core.

9. A puncture cannula assembly for interventional therapy according to claim 1, wherein the puncture needle core (11) and the inner cannula (3) are provided with marking lines on the outer wall.

Images