CN211433271U

CN211433271U - Electrode needle and subassembly flexible, flexible to use of easily buckling

Info

Publication number: CN211433271U
Application number: CN201922032102.2U
Authority: CN
Inventors: 陈永刚; 孙婷婷
Original assignee: Hangzhou Ruidi Biotechnology Co ltd
Current assignee: Hangzhou Ruidi Biotechnology Co ltd
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-09-08
Anticipated expiration: 2029-11-21

Abstract

The utility model relates to the field of ablation equipment manufacturing, the electrode needle intensity of the existing ablation equipment is large, the resistance of needle insertion and needle pushing after bending is large, the utility model provides an electrode needle which is flexible and can be used flexibly, which is characterized in that a groove section is arranged on the electrode needle, the groove section is composed of a plurality of grooves, the grooves extend along the circumferential direction of the electrode needle, and the grooves are arranged around the electrode needle; when the electrode needle is bent, the width of the groove on the outer side of the bent part is increased, the width of the groove on the inner side of the bent part is reduced, the strength is low, the bending is easy, and the electrode needle is more flexible in use.

Description

Electrode needle and subassembly flexible, flexible to use of easily buckling

Technical Field

The utility model relates to an ablation equipment manufacturing field, more specifically say that a flexible, the nimble electrode needle of use and subassembly.

Background

Irreversible electroporation is a new technique that can effectively ablate tumors. It is a tissue ablation technique that creates permanent nanopores in the cell membrane by a very short and strong electric field, allowing cell death by perturbing cell homeostasis. This approach results in apoptosis rather than necrosis of cells caused by other thermal-fusion, radiation-based ablation techniques. Irreversible electroporation has advantages not found in other ablation techniques, including selectivity for tissue ablation, destruction of "cells", and no damage to vessel walls, nerves, trachea and bronchi, bile ducts, bowel tubes, ureters.

Most of the existing irreversible electroporation operations are performed under the guidance of body surface ultrasound, percutaneous puncture is performed to the focus of a patient, or an ultrasonic endoscope enters a body through a natural channel of a human body to be close to the focus area, the distance between the focus and an ultrasonic probe is shortened, and the ablation position and angle can be controlled and adjusted in real time more clearly. When entering into the internal focus area of being close through human natural passageway through ultrasonic endoscope, because human natural passageway inflection for the electrode needle that melts adopts metallic conductor, it is when ultrasonic endoscope anterior segment is crooked, because elasticity resilience is great itself, therefore the electrode needle when the bending is flexible, resistance between its and the pipe wall of section of thick bamboo utmost point or sheath pipe can increase, is difficult for advancing needle or push away the needle, the condition of auto-lock appears even.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the electrode needle is difficult to insert or push the needle after bending because of intensity is big among the above-mentioned prior art is overcome, provide a flexible, use nimble electrode needle and subassembly.

In order to achieve the above object, the utility model discloses a following technical scheme can realize: the electrode needle is easy to bend and flexible to use, and is characterized in that a groove section is arranged on the electrode needle and consists of a plurality of grooves, the grooves extend along the circumferential direction of the electrode needle, and the grooves are arranged around the electrode needle; when the electrode needle is bent, the width of the groove on the outer side of the bent part is increased, and the width of the groove on the inner side of the bent part is reduced.

Above-mentioned technical scheme through set up the slot on the lateral wall, changes the intensity of electrode needle, makes it can be softer, flexible, and is more nimble when using. When the electrode needle with the structure passes through a narrow natural channel of a human body, such as a digestive tract, the electrode needle can reach a far end from a narrow part of the digestive tract, and successfully probe the narrow part and a mucous membrane of a far-end lumen or a focus at the far end.

The utility model discloses further preferred scheme does: the grooves are formed by laser engraving.

The utility model discloses further preferred scheme does: the grooves are in a continuous spiral shape or alternate arc line shapes on the side wall of the electrode needle.

The utility model discloses further preferred scheme does: the electrode needle is in a hollow tubular shape.

The utility model discloses further preferred scheme does: the groove penetrates through the tube wall of the electrode needle.

The utility model discloses further preferred scheme does: the grooves are in alternate arc sections, and the angle corresponding to each arc section is 90-270 degrees.

The utility model discloses further preferred scheme does: the groove sections are in axial direction, and the distance between two adjacent grooves is gradually increased, equal or gradually reduced.

The utility model discloses further preferred scheme does: the width of the groove is smaller than the distance between two adjacent grooves, and the width of the groove is 0.008-0.02 mm.

The utility model discloses further preferred scheme does: the distance between the groove section and the needle point of the electrode needle is 1mm-20 mm.

The utility model discloses another aspect still provides a flexible, use nimble electrode needle subassembly, including outer sheath pipe, a section of thick bamboo utmost point and core utmost point, the core utmost point has adopted foretell electrode needle, the electrode needle is located a section of thick bamboo utmost point.

To sum up, the utility model discloses following beneficial effect has: the electrode needle that this scheme adopted is easily crooked, uses in a flexible way, and is little at the bending department resistance, easy needle insertion or push away the needle.

Drawings

FIG. 1 is a schematic structural view of example 1.

Fig. 2 is an enlarged view at a in fig. 1.

FIG. 3 is a side view of embodiment 1.

In the figure: 1. an electrode needle; 11. a trench segment; 12. and (4) a groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications without inventive contribution to the present embodiment as required after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Example 1:

as shown in fig. 1 and 3, a flexible and flexible electrode needle is shown, and the electrode needle 1 has a hollow tubular shape, i.e., a thin wall shape. The electrode needle 1 is provided with a groove section 11, the distance from the groove section 11 to the needle point of the electrode needle 1 is 1mm-20mm, and an appropriate specification is selected according to actual conditions, wherein 10mm is taken as an example in the embodiment. The groove section 11 is formed by a plurality of grooves 12, the grooves 12 extending along the circumference of the electrode needle 1, and the grooves 12 arranged around the electrode needle 1 (see fig. 2 for details). If the electrode needle 1 is cut and flattened along the axial direction, the groove 12 is perpendicular to the axial direction (cutting line) or forms an included angle with the axial direction. The groove segments 11 are axially equally spaced between two adjacent grooves 12 (the spacing may be gradually increased or decreased according to practical circumstances, and will not be described in detail here). The width of the groove 12 is smaller than the distance between two adjacent grooves 12, the width of the groove 12 is 0.008-0.02mm, and 0.008mm is adopted in the embodiment.

When the electrode needle 1 is bent, the width of the groove 12 outside the bend is increased, and the width of the groove 12 inside the bend is decreased.

In this embodiment, the groove 12 is formed by laser engraving and the groove 12 penetrates through the wall of the electrode needle 1. The grooves 12 are formed in alternate arc segments (which may also be formed in a continuous spiral shape, and are not described in detail herein) on the sidewall of the electrode needle 1.

The grooves 12 are formed in alternate arc segments, and the angle corresponding to each arc segment is 90-270 degrees, and 270 degrees is taken as an example in this embodiment.

Example 2:

a flexible and user-friendly electrode needle assembly comprises an outer sheath, a barrel pole and a core pole, wherein the core pole adopts an electrode needle 1 as described in embodiment 1, and the electrode needle 1 is positioned in the barrel pole.

Claims

1. The electrode needle is easy to bend and flexible to use, and is characterized in that a groove section (11) is arranged on the electrode needle (1), the groove section (11) is formed by a plurality of grooves (12), the grooves (12) extend along the circumferential direction of the electrode needle (1), and the grooves (12) are arranged around the electrode needle (1); when the electrode needle (1) is bent, the width of the groove (12) on the outer side of the bent part is increased, and the width of the groove (12) on the inner side of the bent part is reduced.

2. The electrode needle according to claim 1, wherein: the groove (12) is formed by laser engraving.

3. The electrode needle according to claim 1 or 2, wherein: the grooves (12) are in a continuous spiral shape or alternate arc line shapes on the side wall of the electrode needle (1).

4. The electrode needle according to claim 3, wherein: the electrode needle (1) is in a hollow tubular shape.

5. The electrode needle according to claim 4, wherein: the groove (12) penetrates through the tube wall of the electrode needle (1).

6. The electrode needle according to claim 5, wherein: the grooves (12) are in alternate arc sections, and the angle corresponding to each arc section is 90-270 degrees.

7. The electrode needle according to claim 6, wherein: the groove sections (11) are arranged in the axial direction, and the distance between two adjacent grooves (12) is gradually increased, equal or gradually reduced.

8. The electrode needle according to claim 7, wherein: the width of the groove (12) is smaller than the distance between two adjacent grooves (12), and the width of the groove (12) is 0.008-0.02 mm.

9. The electrode needle according to claim 1, wherein: the distance between the groove section (11) and the needle point of the electrode needle (1) is 1mm-20 mm.

10. A flexible, user-friendly electrode needle assembly comprising an outer sheath, a barrel and a core, wherein the core is an electrode needle (1) according to any of claims 1 to 9, and the electrode needle (1) is located in the barrel.