CN218220300U

CN218220300U - Electrode needle

Info

Publication number: CN218220300U
Application number: CN202221950890.9U
Authority: CN
Inventors: 陈强; 王志青; 邵文煜; 朱洋丽
Original assignee: Zhejiang Curaway Medical Technology Co ltd
Current assignee: Zhejiang Curaway Medical Technology Co ltd
Priority date: 2022-07-27
Filing date: 2022-07-27
Publication date: 2023-01-06
Anticipated expiration: 2032-07-27

Abstract

The utility model belongs to the technical field of medical equipment, a electrode needle is disclosed, including the pjncture needle, the outer parcel of pjncture needle has the insulating layer, and the syringe needle of pjncture needle exposes outside the insulating layer, and the insulating layer overcoat has the handle, and pjncture needle one end is fixed in the handle, and the insulating layer part at least exposes outside the handle, has the spout on the handle, has slider in the spout, insulating layer and slider fixed connection, slider have the buckle, and the buckle can the joint in the spout, restriction slider's removal. The utility model discloses a buckle can the joint in the draw-in groove of handle, as long as press down when needs remove and turn round, can press the unblock with the buckle under the draw-in groove, push away through promoting and turn round suitable position, loosen and push away to turn round and can connect the buckle in another draw-in groove again to restriction slider's removal has ensured that insulating layer parcel length does not take place the skew, has the indicateing arm on the slider, conveniently observes the promotion position that pushes away the handle, has improved operation precision and security.

Description

Electrode needle

Technical Field

The utility model belongs to the technical field of medical equipment, especially, relate to an electrode needle.

Background

In the field of tumor therapy, radio Frequency Ablation (RFA) and irreversible electroporation ablation (npa) technologies are receiving more and more attention as novel tumor therapy methods. At present, when the Radio Frequency Ablation (RFA) and the irreversible electroporation are adopted for ablation therapy, an electrode needle is needed to be used, the electrode needle is inserted into a focus part of a human body, and the electrode is utilized to generate resistance electrothermal effect in tissues, so that tumor cells are dried and necrotized, and the purpose of treating tumors is achieved. Tumors of different sizes need to be treated by adopting electrode working ends of different lengths, the existing electrode needle adopts an outer insulating sleeve, and the length of the electrode working end is changed by the extension and contraction of the insulating sleeve, so that the purpose of treating tumors of different sizes is achieved. In the existing radio frequency ablation electrode needle, an insulating layer is sleeved on the outer side of a puncture needle; the rear end of the insulating layer is fixedly connected with the sliding device, and the radio frequency ablation electrode needle can treat multiple tumors with different volumes, however, when the insulating layer of the conventional electrode needle reaches a specified position, the indication mark is not clear, the sliding device cannot be fixed, and the electrode needle can slide and shift the insulating layer in the treatment process, so that the problem of incomplete or excessive tumor treatment is caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electrode needle to the insulating layer position of solving current electrode needle is difficult for fixing, takes place the technical problem that the skew influences treatment easily.

In order to achieve the above purpose, the utility model discloses a specific technical scheme as follows:

the utility model provides an electrode needle, includes the pjncture needle, the outer parcel of pjncture needle has the insulating layer, the insulating layer overcoat has the handle, pjncture needle one end is fixed in the handle, the insulating layer is at least partly exposed outside the handle, the spout has on the handle, slider has in the spout, insulating layer and slider fixed connection, slider has buckle and indicateing mark, the buckle can the joint in the spout, restriction slider's removal, the indicateing mark instruction the position that slider removed.

Further, slider including pushing away to turn round, push away to turn round the connecting piece and set up the slider in the handle, the elastic component has on the slider, the buckle has on the elastic component, push away to turn round through pushing away the elastic component fixed connection who turns round on connecting piece and the slider, a plurality of draw-in grooves have in the spout of handle, push away to turn round protruding on the plane at the spout place of handle, the buckle joint is in one of them draw-in groove of spout, when pushing down the turn round, the buckle is pushed down along with the elastic component, arranges in the handle cavity of spout bottom, promotes to push away to turn round this moment, the buckle moves in the handle cavity, when moving to suitable position, loosens and pushes away to turn round, the buckle pops out and arranges in another draw-in groove of handle and restricts slider's removal.

Furthermore, the sliding part is provided with a through hole for penetrating the puncture needle, the inner wall of the through hole is fixedly connected with the tail end of the insulating layer, and the insulating layer moves along with the sliding part.

Furthermore, the handle comprises a hollow handle body and handle caps fixed at two ends of the handle body, the handle caps are divided into a handle top cap and a handle bottom cap, a guide hole is formed in the middle of the handle top cap and used for penetrating through the puncture needle and the insulating layer, the puncture needle penetrates through the hollow handle body through the through hole and penetrates through the sliding device, a lead hole is formed in the middle of the handle bottom cap, the tail end of the puncture needle is connected with a lead, and the lead is led out from the lead hole of the handle bottom cap.

Furthermore, the tail end of the puncture needle is connected with a metal compression joint sheet, the metal compression joint sheet is connected with a lead, and the lead is led out from the tail end of the handle.

Furthermore, the tail end of the handle body is provided with a glue pouring groove, the joint of the puncture needle and the lead is positioned in the glue pouring groove, and the joint of the puncture needle and the lead is fixed with the handle body through glue pouring.

Furthermore, the sliding part is provided with an indicator, the indicator protrudes above a plane where a sliding groove of the handle is located, the clamping grooves on the sliding groove are T-shaped scale grooves, the clamping grooves are connected to form scale strips, and along with the movement of the sliding part, the indicator moves on the scale strips to indicate the moving distance of the current insulating layer.

Further, the number of the clamping grooves is 13, and the spacing distance between every two clamping grooves is 5mm.

Furthermore, the puncture needle comprises a needle head and a needle body part, wherein the topmost end of the needle head is provided with three oblique cutting planes, and the outer peripheral surface of the joint of the needle head and the needle body part is provided with an oblique cutting groove.

Furthermore, the electrode needle comprises a power connector, the power connector is connected with a lead, and the power connector is connected with an external power supply.

The utility model discloses an electrode needle has following advantage: the handle of the electrode needle of the utility model is provided with a chute, a plurality of T-shaped clamping grooves are connected to form a scale strip in the chute, the sliding device is provided with a buckle which can be clamped in the clamping groove of the handle, when the electrode needle needs to be moved, the buckle can be pressed and unlocked below the clamping groove as long as a push button on the sliding device is pressed, the push button is pushed to a proper position, the buckle can be clamped in another clamping groove again by loosening the push button, thereby limiting the movement of the sliding device, ensuring that the wrapping length of an insulating layer is not deviated, ensuring that the exposed part of an electrode tip is not changed in the operation process, and ensuring the accuracy of the operation; the last indicateing arm that has of slider removes in the spout along with slider, conveniently observes the promotion position that pushes away the handle, is convenient for adjust the length of pjncture needle work end, the utility model discloses an electrode needle can the accurate multiple tumour that melts different volumes, has improved operation precision and security.

Drawings

Fig. 1 is a schematic view of the overall structure of the electrode needle of the present invention;

FIG. 2 is a schematic view of the cross-sectional structure of the electrode needle of the present invention;

fig. 3 is a schematic structural view of the sliding device of the electrode needle of the present invention;

FIG. 4 is a schematic view of the chute structure of the present invention;

FIG. 5 is a schematic view of the structure of the needle head of the puncture needle of the present invention;

the notation in the figure is: 1. puncturing needles; 11. a chamfer plane; 12. obliquely cutting a groove; 2. an insulating layer; 3. a handle; 31. a handle body; 321. A handle top cap; 322. a handle bottom cap; 33. a metal crimping piece; 34. a glue pouring groove; 35. a chute; 351. a card slot; 4. a sliding device; 41. pushing and twisting; 42. a push-button connector; 43. a slider; 431. an elastic member; 432. buckling; 433. an indicator mark; 434. a through hole; 5. a wire; 6. and a power supply connector.

Detailed Description

In order to better understand the purpose, structure and function of the present invention, the following description will be made in detail with reference to the accompanying drawings.

As shown in figure 1, the utility model discloses an electrode needle, including pjncture needle 1, pjncture needle 1 wraps up there is insulating layer 2, and during operation, the syringe needle of pjncture needle 1 exposes outside insulating layer 2, as the electrode work end that the radio frequency melts. The handle 3 is sleeved outside the insulating layer 2, one end of the puncture needle 1 is fixed in the handle 3, and at least part of the insulating layer 2 is exposed out of the handle 3. The handle 3 is provided with a sliding groove 35, the sliding device 4 is arranged in the sliding groove 35, the sliding device 4 is fixedly connected with the insulating layer 2 in the handle 3, the sliding device 4 is pushed to change the wrapping length of the insulating layer 2 on the puncture needle 1, so that the electrode action length of the needle head of the puncture needle 1 is changed, the larger the length is, the larger the tumor treatment area is, and the purpose of treating tumors with different sizes is achieved.

As shown in fig. 2, the handle 3 includes a hollow handle body 31 and caps fixed to both ends of the handle body 31, the caps are divided into a top cap 321 and a bottom cap 322, the top cap 321 is fixed to one end of the handle body 31 by adhesion, and the bottom cap 322 is fixed to the other end of the handle body 31 by adhesion. The crown cap 321 has a guide hole in the middle for passing the puncture needle 1 and the insulating layer 2, and the puncture needle 1 penetrates the slider 4 through the hollow stem body 31. The middle of the handle bottom cap 322 is provided with a lead hole, the electrode needle also comprises a metal compression joint sheet 33, the metal compression joint sheet 33 is positioned at the joint of the tail end of the handle body 31 and the handle bottom cap 322, the tail end of the puncture needle 1 is connected with the metal compression joint sheet 33, the metal compression joint sheet 33 is connected with the lead 5, the lead 5 is led out from the lead hole of the handle bottom cap 322, the tail end of the handle body 31 is provided with a glue filling groove 34, the joint of the puncture needle 1 and the lead 5 is positioned in the glue filling groove 34, the connecting part of the puncture needle 1 and the lead 5 is fixed with the handle body 31 by glue filling, and the metal compression joint sheet 33 is adopted to connect the lead and the puncture needle 1 and the lead 5 are fixed by glue filling, so that a good sealing effect can be achieved.

As shown in fig. 3 and 4, the sliding device 4 includes a push button 41, a push button connector 42, and a sliding member 43 disposed in the handle, the sliding member 43 has a through hole 434 for passing through the puncture needle 1, the inner wall of the through hole 434 is fixedly connected to the end of the insulating layer 2, and the insulating layer 2 moves together with the sliding member 43. The sliding part 43 is provided with an elastic part 431, the elastic part 431 is provided with a buckle 432, the push button 41 is fixedly connected with the elastic part 431 on the sliding part 43 through a push button connecting piece 42, the sliding groove 35 of the handle 3 is internally provided with a plurality of clamping grooves 351, the push button 41 is protruded on the plane of the sliding groove 35 of the handle 3, and under a normal state, the buckle 432 is clamped in one of the clamping grooves 351 of the sliding groove 35 to limit the movement of the sliding device 4; when the push button 41 is pressed, the elastic member 431 is pressed, the buckle 432 is pressed along with the elastic member 431 and is placed in the handle cavity at the bottom of the sliding groove 35, the push button 41 is pushed at the moment, the buckle 432 moves in the handle cavity, and when the push button 41 is moved to a proper position, the push button 41 is released, and the buckle 432 is popped out and placed in the other clamping groove 351 of the handle 3.

The sliding member 43 has an indicator 433, and the indicator 433 protrudes above the plane of the sliding slot 35 of the handle 3. The clamping grooves 351 in the sliding grooves 35 are T-shaped scale grooves, and the clamping grooves 351 are connected to form scale strips. As the slider 43 moves, the indicator 433 moves on the scale bar, indicating the distance of movement of the insulating layer 2 at present.

As shown in fig. 5, the puncture needle 1 comprises a needle head and a needle body part, the topmost end of the needle head is provided with three inclined cuts 11, the outer peripheral surface of the joint of the needle head and the needle body part is provided with an inclined cutting groove 12, and the inclined cutting groove 12 is used for facilitating ultrasonic images.

The electrode needle 1 further comprises a power connector 6, the power connector 6 is connected with the lead 5, and the power connector 6 is connected with an external power supply.

When a doctor uses the electrode needle for treatment, fingers press the push button 41, the elastic part 431 connected with the push button 41 moves downwards, the buckle 432 on the elastic part 431 is positioned in the handle cavity at the bottom of the sliding groove 35, the fingers move the push button 41 forwards to drive the whole sliding device 4 to move forwards so that the insulating layer 2 reaches a specified position, and the indicator 433 on the sliding device 4 displays the displacement distance of the insulating layer 2 (the indicator 433 can indicate the axial distance of the insulating layer 2 from the top end of the needle head); the push button 41 is released by the finger, the buckle 432 is clamped in one of the clamping grooves 351, the indicator 433 is convexly arranged on the other clamping groove 351, the push button 41 cannot move back and forth at the moment, and a doctor can insert the puncture needle 1 into a tumor area of a human body for treatment. The protruding sign that locates on draw-in groove 351 of indicateing sign 433 indicates more clearly, and slider 4 and draw-in groove 351 adopt the buckle to connect, can guarantee when using electrode needle 1 in the treatment process, and slider 4 can not produce the back-and-forth movement in handle 3, and insulating layer 2 can not take place the skew.

The push button 41 is pushed backwards, the sliding device 4 moves backwards, the indicator 433 moves backwards from the front clamping groove 351 to one clamping groove 351, the buckle 432 moves backwards from the front clamping groove 351 to one clamping groove 351, the sliding device 4 drives the insulating layer 2 to move backwards for 5mm in the sliding groove 35 of the handle 3, the length of the working end, covered by the insulating layer 2, of the puncture needle 1 is shortened for 5mm, and the length of the working end of the puncture needle 1 is adjusted for 5mm. Similarly, the sliding device 4 is moved forwards, the indicator 433 moves forwards from the position of the next clamping groove 351, the buckle 432 moves forwards from the position of the next clamping groove 351, the sliding device 4 drives the insulating layer 2 to move forwards by 5mm in the sliding groove 35 of the handle 3, the length of the working end of the puncture needle 1 covered by the insulating layer 2 is enlarged by 5mm, and the length of the working end of the puncture needle 1 is adjusted to be reduced by 5mm. The length of the working end of the puncture needle 1 is adjusted accordingly, so that the length adjusting range of the working end of the puncture needle 1 can be 5mm-40mm. An external power supply is connected, the radio frequency ablation therapeutic apparatus is started, the working end of the puncture needle 1 is enabled to perform stepping ablation nearby important tissues and organs, multiple tumors with different volumes are accurately ablated, and the safety is improved.

The sliding device 4 is provided with an indicator 433, the indicator 433 being highlighted on the runner 35 of the handle. The first gear push button 41 is pushed forwards, and the indicator 433 moves forwards 5mm in the chute; two grades of buttons 41 that push away are promoted backward, and indicator 433 moves 10mm backward at spout 35, and indicator 433 conveniently observes the pushing position who pushes away handle 41, is convenient for adjust the length of pjncture needle 1 work end, and the multiple tumour of different volumes is ablated to the accuracy, improves the security.

The quantity of the clamping grooves 351 in the sliding groove 35 is 13, scale values are arranged on the side edges of the scale bars and respectively represent 5mm, 10mm, 15 mm, 20 mm, 25 mm, 30mm, 35 mm and 40mm, the first-gear push button 41 is pushed forwards, the indicator 433 moves forwards by one clamping groove 351, and the length of the working end, covered by the insulating layer 2, of the puncture needle 1 is reduced by 5mm. The six-gear push button 41 is pushed forwards, the indicator 433 moves the six clamping grooves 351 forwards, the length of the working end, covered by the insulating layer 2, of the puncture needle 1 is reduced by 30mm, at the moment, the length of the working end of the puncture needle 1 is adjusted to be only 5mm, and multiple tumors with small size can be ablated accurately.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims

1. The utility model provides an electrode needle, includes pjncture needle (1), pjncture needle (1) outer parcel has insulating layer (2), insulating layer (2) overcoat has handle (3), pjncture needle (1) one end is fixed in handle (3), insulating layer (2) at least part exposes outside handle (3), spout (35) have on handle (3), slider (4) have in spout (35), insulating layer (2) and slider (4) fixed connection, its characterized in that, slider (4) have buckle (432) and indicator (433), buckle (432) can the joint in spout (35), restriction slider (4)'s removal, indicator (433) indicate the position that slider (4) removed.

2. The electrode needle as claimed in claim 1, wherein the sliding device (4) comprises a push button (41), a push button connector (42) and a sliding part (43) arranged in the handle (3), the sliding part (43) is provided with an elastic part (431), the elastic part (431) is provided with a buckle (432), the push button (41) is fixedly connected with the elastic part (431) on the sliding part (43) through the push button connector (42), the sliding groove (35) of the handle (3) is provided with a plurality of clamping grooves (351), the push button (41) protrudes out of the plane of the sliding groove (35) of the handle (3), the buckle (432) is clamped in one clamping groove (351) of the sliding groove (35), when the push button (41) is pressed down, the buckle (432) is pressed down along with the elastic part (431) and is arranged in the handle cavity at the bottom of the sliding groove (35), the push button (41) moves in the handle cavity, when the push button (41) moves to a proper position, the push button (41) is arranged in the other sliding device (432) to limit the movement of the handle (3).

3. The electrode needle according to claim 2, wherein the slider (43) has a through-hole (434) for passing the puncture needle (1), an inner wall of the through-hole (434) is fixedly connected to a distal end of the insulating layer (2), and the insulating layer (2) moves together with the slider (43).

4. The electrode needle according to claim 1, wherein the handle (3) comprises a hollow handle body (31) and handle caps fixed at both ends of the handle body (31), the handle caps are divided into a handle top cap (321) and a handle bottom cap (322), the handle top cap (321) has a guide hole in the middle for passing through the puncture needle (1) and the insulation layer (2), the puncture needle (1) passes through the hollow handle body (31) through the sliding device (4) through a through hole (434), the handle bottom cap (322) has a lead hole in the middle, the end of the puncture needle (1) is connected with a lead wire (5), and the lead wire (5) is led out from the lead hole of the handle bottom cap (322).

5. The electrode needle according to claim 4, characterized in that the tip of the puncture needle (1) is connected with a metal crimping piece (33), the metal crimping piece (33) is connected with a lead wire (5), and the lead wire (5) is led out from the tip of the handle (3).

6. The electrode needle as claimed in claim 4 or 5, wherein the handle (31) has a glue-pouring groove (34) at the end, the connection part of the puncture needle (1) and the lead (5) is located in the glue-pouring groove (34), and the connection part of the puncture needle (1) and the lead (5) is fixed with the handle (31) by glue-pouring.

7. The electrode needle as claimed in claim 2, wherein the sliding member (43) is provided with an indicator (433), the indicator (433) protrudes above a plane of a sliding groove (35) of the handle (3), a plurality of clamping grooves (351) on the sliding groove (35) are T-shaped scale grooves, the clamping grooves (351) are connected to form scale bars, and the indicator (433) moves on the scale bars along with the movement of the sliding member (43) to indicate the current moving distance of the insulating layer (2).

8. The electrode needle as claimed in claim 7, wherein the number of the catching grooves (351) is 13, and a spaced distance between each catching groove (351) is 5mm.

9. The electrode needle according to claim 1, wherein the puncture needle (1) comprises a needle head and a needle body portion, the needle head has three chamfered surfaces (11) at the uppermost end, and the outer peripheral surface of the junction of the needle head and the needle body portion has a chamfered groove (12).

10. The electrode needle according to claim 4, characterized in that the puncture needle (1) comprises a power supply connector (6), the power supply connector (6) is connected with the lead (5), and the power supply connector (6) is connected with an external power supply.