CN211156224U

CN211156224U - Electrode needle assembly

Info

Publication number: CN211156224U
Application number: CN201921773206.2U
Authority: CN
Inventors: 王海峰
Original assignee: Remedicine Co ltd
Current assignee: Shanghai Ruidao Medical Technology Co ltd
Priority date: 2019-10-21
Filing date: 2019-10-21
Publication date: 2020-08-04
Anticipated expiration: 2029-10-21

Abstract

The present application provides an electrode needle assembly. The electrode needle assembly includes: the electrode comprises a handle, an electrode needle body and a lead, wherein the handle is of a hollow structure, and the electrode needle body penetrates through the handle through the hollow structure; the handle comprises a handle body and a handle cap, a guide hole is formed at one end of the handle body, the needle tip end of the electrode needle body is exposed to the outside through the guide hole, and a first clamping part is arranged at the other end of the handle body; one end of the handle cap is provided with a second clamping part matched with the first clamping part, and the first clamping part and the second clamping part are clamped together to form a dead lock; the other end of the handle cap is provided with a lead hole, the tail end of the electrode needle body is connected with a lead, and the lead is led out from the lead hole. The electrode needle assembly provided by the embodiment of the application is convenient to install, clean and sanitary, and is not easy to open after installation is completed, so that secondary utilization is effectively avoided.

Description

Electrode needle assembly

Technical Field

The application relates to the technical field of medical instruments, in particular to an electrode needle assembly.

Background

Cancer is a major disease that endangers human health. In the field of tumor treatment, irreversible electroporation has attracted extensive attention from researchers in bioelectricity fields at home and abroad due to its advantages of rapidness, controllability, visibility, selectivity, nonthermomechanics and the like, and is gradually applied to clinical treatment of tumors.

The therapeutic mechanism of the irreversible electroporation technology is that a high-voltage power supply and a pulse generator generate high-voltage ultrashort nanosecond pulses, the ultrashort pulses with certain frequency are emitted, electric energy is released in a pulse electric field mode through an electrode, and electric field energy is transmitted to tumor tissues through an electrode needle to enable tumor cells to generate irreversible electroporation and die. Among them, the electrode needle is a key component for treating tumors by the irreversible electroporation technology, and plays a crucial role in the irreversible electroporation effect.

SUMMERY OF THE UTILITY MODEL

The present application provides an electrode needle assembly, including: the electrode comprises a handle, an electrode needle body and a lead, wherein the handle is of a hollow structure, and the electrode needle body penetrates through the handle through the hollow structure; the handle comprises a handle body and a handle cap, a guide hole is formed at one end of the handle body, the needle tip of the electrode needle body is exposed to the outside through the guide hole, and a first clamping part is arranged at the other end of the handle body; one end of the handle cap is provided with a second clamping part matched with the first clamping part, and the first clamping part and the second clamping part are clamped together to form a dead buckle; the other end of the handle cap is provided with a lead hole, the tail end of the electrode needle body is connected with the lead, and the lead is led out from the lead hole.

Further, the electrode needle assembly further includes: a connecting pipe; the connecting pipe is sleeved on the tail end of the electrode needle body and the lead, so that the tail end of the electrode needle body is connected with the lead.

Furthermore, a boss is arranged on the inner wall of one end of the handle body, which forms the guide hole, and the connecting pipe is abutted against the boss.

Furthermore, the surface of connecting pipe has 2 at least pressing muscle, press the muscle to be located the connecting pipe cover is located the one end of wire.

Furthermore, one of the first clamping part and the second clamping part is a buckle, the other is a rib, and the rib is located on the inner wall of the handle.

Further, the buckle is in a barb shape.

Further, the convex edge is of an annular structure.

Further, the length of the handle is 90mm-100 mm.

Further, the diameter of the handle is 3mm-9.2 mm.

Compared with the prior art, the electrode needle handle has the advantages that the handle body and the handle cap are designed to be connected in a buckling mode, the electrode needle body is conveniently installed in the handle, foreign objects do not need to be used in the installation process, and the electrode needle handle is clean and sanitary. And first block portion and second block portion card form the dead lock together for after the installation of electrode needle body is accomplished, handle body and handle cap are very difficult to be opened again, prevent that electrode needle subassembly from being used after by reutilization, are favorable to the processing of medical waste.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the invention.

FIG. 1 is a cross-sectional view of an electrode needle assembly shown in an exemplary embodiment of the present application;

FIG. 2 is a cross-sectional view of a handle construction shown in an exemplary embodiment of the present application;

FIG. 3 is a schematic view of a shank body according to an exemplary embodiment of the present application;

FIG. 4 is a schematic illustration of a cap construction according to an exemplary embodiment of the present application;

FIG. 5 is a schematic diagram illustrating a connection between an electrode pin body and a lead wire using a connection tube according to an exemplary embodiment of the present application;

FIG. 6 is a cross-sectional view of a shank body construction shown in an exemplary embodiment of the present application;

FIG. 7 is a structural cross-sectional view of a crown cap shown in an exemplary embodiment of the present application;

FIG. 8 is a cross-sectional view of a snap-fit connection shown in an exemplary embodiment of the present application;

FIG. 9 is a cross-sectional view of another snap-fit connection shown in an exemplary embodiment of the present application.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

When the irreversible electroporation technology is used for tumor treatment, the electrode needle is used as a key component and plays a crucial role in the irreversible electroporation effect. Among them, the installation of electrode needle is very important. At present, when the electrode needle is installed, the electrode needle body is inserted into the handle in an inserting mode, so that the electrode needle is simple and convenient, but not firm enough and is easy to loosen. Or the electrode needle body and the handle are fixed by glue, so the electrode needle body is easily polluted, and the cleanness and the sanitation are not enough.

Based on this, this application embodiment provides an electrode needle subassembly for the installation of electrode needle is simple firm, clean health. And after the electrode needle body is installed, the handle body and the handle cap are difficult to open again, so that the electrode needle assembly is prevented from being reused after being used, and the treatment of medical waste is facilitated. An electrode needle assembly of an embodiment of the present application is shown in fig. 1.

Fig. 1 is a structural sectional view of an electrode needle assembly according to an exemplary embodiment of the present application. The electrode needle subassembly includes handle 1, electrode needle body 2 and wire 3, and wherein, handle 1 is hollow structure, and electrode needle body 2 runs through handle 1 through this hollow structure. In the present embodiment, the handle 1 includes a handle 11 and a cap 12, and referring to fig. 2, a guide hole 13 is formed at one end of the handle 11, the needle tip of the electrode needle body 2 is exposed to the outside through the guide hole 13, and a first engaging portion 111 is formed at the other end of the handle 11. One end of the handle cap 12 has a second engaging portion 121 engaged with the first engaging portion 111, and the first engaging portion 111 and the second engaging portion 121 are engaged together to form a dead lock. The other end of the handle cap 12 is provided with a lead hole 14, the end of the electrode needle body 2 is connected with the lead wire 3, and the lead wire 3 is led out from the lead hole 14.

In this embodiment, the handle 11 and the cap 12 are separated before the electrode needle assembly is mounted, so as to facilitate the mounting of the electrode needle body 2, please refer to fig. 3 and 4. When mounting, the lead wire 3 can be inserted into the lead hole 14 of the cap 12 and led out from the other end of the cap 12, and the lead wire 3 and the end of the electrode needle body 2 are connected to transmit electric power. The needle tip of the electrode needle body 2 passes through the handle body 11 and is exposed to the outside from the guide hole 13, and the diameter of the guide hole 13 is matched with that of the electrode needle body 2, so that the function of fixing the electrode needle body 2 can be achieved. The shank body 11 and the crown 12 are then tightly coupled by snapping the first engaging portion 111 and the second engaging portion 121 together.

In this embodiment, the handle body 11 and the handle cap 12 are designed to be in a snap connection manner, so that the electrode needle body 2 can be conveniently installed in the handle 1 without using foreign objects in the installation process, and the electrode needle is clean and sanitary. And the first clamping part 111 and the second clamping part 121 are clamped together to form a dead lock, so that the handle body 11 and the handle cap 12 are difficult to open again after the electrode needle body 2 is installed, the electrode needle assembly is prevented from being reused after being used, and the disposal of medical waste is facilitated.

In an alternative embodiment, the electrode needle assembly may further include a connection tube 4, as shown in fig. 5, the connection tube 4 is fitted over the distal end of the electrode needle body 2 and the lead wire 3 such that the distal end of the electrode needle body 2 is connected to the lead wire 3. In this embodiment, the connection tube 4 is made of a conductive material, the diameter of the inner space thereof is matched with the diameter of the electrode needle body 2, one end of the connection tube 4 is fitted over the end of the electrode needle body 2, and the other end of the connection tube 4 is inserted into the lead wire 3 and then the connection tube 4 is compressed so that the electrode needle body 2 and the lead wire 3 are fixed to the connection tube 4. So that the electric energy in the lead wire 3 can be transmitted to the electrode needle body 2 through the connection tube 4. This embodiment makes being connected of electrode needle body 2 and wire 3 become convenient and fast more through addding connecting pipe 4, and connecting pipe 4 can be in the same place electrode needle body 2 and wire 3 firm for energy transmission on the electrode needle body 2 is more stable.

Preferably, the outer surface of the connection tube 4 has at least 2 pressing ribs 41. With continued reference to fig. 5, the pressing rib 41 is located at one end of the connecting tube 4 sleeved on the conducting wire 3. Specifically, the pressing ribs 41 may be symmetrically disposed about a center line of the connection pipe 4. Like this, when connecting wire 3, behind wire 3 inserts connecting pipe 4, through compressing tightly pressing muscle 41, can be very light fix wire 3 in connecting pipe 4, compress tightly the in-process moreover, owing to press the effect of muscle 41, be difficult to press the deformation (if flat, broken skin etc.) with connecting pipe 4, can keep the original shape of connecting pipe 4, also can guarantee wire 3's electric conductive property.

In another alternative embodiment, the inner wall of the handle 11 at the end forming the guiding hole 13 has a boss 15, please refer to fig. 6, the connecting tube 4 is supported on the boss 15. Thus, the electrode needle 2 can be further fixed, and the electrode needle 2 is prevented from shaking back and forth.

In another alternative embodiment, one of the first engaging portion 111 and the second engaging portion 121 is a buckle, and the other is a rib, and the rib is located on the inner wall of the handle 1. That is, when the first engaging portion 111 is a buckle, the second engaging portion 121 is a rib, that is: the buckle is positioned on the handle body 11, and the convex rib is positioned on the inner wall of the handle cap 12. Alternatively, the second engaging portion 121 may be a snap, and the first engaging portion 111 may be a rib, that is: the buckle is positioned on the handle cap 12, and the convex rib is positioned on the inner wall of the handle body 11. In the embodiment of the present application, the first engaging portion 111 is taken as a catch, and the second engaging portion 121 is taken as a rib, for example, and reference is made to fig. 3, 6, and 7. In this embodiment, the first engaging portion 111 has a guiding slope, and when the handle 11 is engaged with the cap 12, the elastic arm of the first engaging portion 111 is deformed and pressed in, and slides down through the second engaging portion 121 under the guiding slope, and the first engaging portion 111 is engaged with the second engaging portion 121 by the resilient force, so that the handle 11 and the cap 12 form a dead lock, are tightly coupled, and are not easily opened.

In another alternative embodiment, the handle 11 and the first engaging portion 111 are integrally formed, and the cap 12 and the second engaging portion 121 are integrally formed, which is beneficial to mold opening and cost saving.

Alternatively, the catch may be in the form of a barb in this embodiment, and the rib may also have a barb configuration that mates with the catch, as shown in fig. 8. When the buckle is engaged with the rib in this embodiment, the engaging surface has a certain angle, so that the first engaging portion 111 and the second engaging portion 121 are engaged more firmly, and further the handle body 11 and the handle cap 12 are combined more tightly, and at this time, if the handle body 11 and the handle cap 12 are forcibly opened, the handle 1 is damaged. Therefore, the electrode needle assembly can be effectively prevented from being reused after use, and the treatment of medical waste is facilitated.

Alternatively, the rib in this embodiment may be a ring-shaped structure, with continued reference to fig. 7. Fig. 7 is a sectional view of the cap 12, in which the protruding ridge is located on the inner wall of the cap 12 to form a protruding ridge ring, the protruding ridge ring and the cap 12 can be integrally formed, and the protruding ridge is of an annular structure, so that the mold opening structure is simple, the production precision is reduced, and the product competitiveness is improved.

In another alternative embodiment, the first engaging portion 111 and the second engaging portion 121 may also be a combination of a buckle and a slot, and the slot is located on the inner wall of the handle 11. Namely: the first engaging portion 111 is a snap, and the second engaging portion 121 is a slot, as shown in fig. 9. Alternatively, the second engaging portion 121 is a snap, and the first engaging portion 111 is a slot. In practical applications, the first engaging portion 111 and the second engaging portion 121 may be in other engaging structures such that the first engaging portion 111 and the second engaging portion 121 form a dead lock when they are engaged together.

Preferably, the length of the handle 1 in the embodiment of the present application may be 90mm to 100 mm. For example, the length of the handle 1 is 90mm at the minimum and 100mm at the maximum, so that the length of the electrode needle 2 can be better matched.

Preferably, the diameter of the handle 1 in the embodiment of the present application may be 3mm to 9.2 mm. Specifically, the maximum diameter of the handle 1 can be 9 +/-0.2 mm, and the minimum diameter of the handle 1 can be 3.2 +/-0.2 mm, so that the handle can be more conveniently held.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the present application, and that various changes in form and details may be made therein without departing from the spirit and scope of the present application in practice.

Claims

1. An electrode needle assembly, comprising: the electrode comprises a handle, an electrode needle body and a lead, wherein the handle is of a hollow structure, and the electrode needle body penetrates through the handle through the hollow structure;

the handle comprises a handle body and a handle cap, a guide hole is formed at one end of the handle body, the needle tip of the electrode needle body is exposed to the outside through the guide hole, and a first clamping part is arranged at the other end of the handle body;

one end of the handle cap is provided with a second clamping part matched with the first clamping part, and the first clamping part and the second clamping part are clamped together to form a dead buckle;

the other end of the handle cap is provided with a lead hole, the tail end of the electrode needle body is connected with the lead, and the lead is led out from the lead hole.

2. The electrode needle assembly of claim 1, further comprising: a connecting pipe;

the connecting pipe is sleeved on the tail end of the electrode needle body and the lead, so that the tail end of the electrode needle body is connected with the lead.

3. The electrode needle assembly according to claim 2, wherein a boss is formed on an inner wall of the handle body at an end where the guide hole is formed, and the connection tube abuts against the boss.

4. The electrode needle assembly according to claim 2, wherein the outer surface of the connection tube has at least 2 pressing ribs, and the pressing ribs are located at one end of the connection tube sleeved on the lead.

5. The electrode needle assembly according to claim 1, wherein one of the first engaging portion and the second engaging portion is a snap and the other is a rib, and the rib is located on an inner wall of the handle.

6. The electrode needle assembly of claim 5, wherein the catch is barb-shaped.

7. The electrode needle assembly of claim 5, wherein the rib is an annular structure.

8. The electrode needle assembly of claim 1, wherein the handle body is integrally formed with the first engaging portion and the cap is integrally formed with the second engaging portion.

9. The electrode needle assembly according to any one of claims 1 to 8, wherein the handle has a length of 90mm to 100 mm.

10. The electrode needle assembly according to any one of claims 1 to 8, wherein the handle has a diameter of 3mm to 9.2 mm.