CN219000527U

CN219000527U - Electrode needle

Info

Publication number: CN219000527U
Application number: CN202222351026.3U
Authority: CN
Inventors: 罗中宝; 顾庆华; 张星光
Original assignee: Shanghai Remedicine Co ltd
Current assignee: Shanghai Ruidao Medical Technology Co ltd
Priority date: 2022-09-05
Filing date: 2022-09-05
Publication date: 2023-05-12
Anticipated expiration: 2032-09-05

Abstract

The electrode needle comprises an electrode needle body, a handle, an outer sleeve and a driving assembly, wherein the outer sleeve is sleeved outside the electrode needle body; the driving assembly is arranged in the handle, the driving assembly is fixedly connected with the outer sleeve, and the outer sleeve is driven to axially move along the electrode needle body when the driving assembly is acted on so as to adjust the exposed length of the electrode needle body. The exposed length of the electrode needle body can be adjusted through the movement of the outer sleeve so as to adapt to focuses of different sizes.

Description

Electrode needle

Technical Field

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

Background

Traditional cancer treatment methods, recently developed thermal ablation therapies characterized by minimally invasive ablation, particle implantation and other ablation therapies are limited in clinical application due to limitations of factors such as indications, contraindications, treatment side effects, thermal effects and the like. In recent years, with the continued development of pulsed bioelectricity, electric field pulses have received widespread attention for their non-thermal, minimally invasive biomedical utility and are increasingly being used in clinical treatment of tumors. Such minimally invasive therapies often require ablation treatment through a needle to reach a focal region within the body.

The exposed length of the electrode needle commonly used in the current treatment is fixed, and in the operation process, operators are required to select the electrode needle with the corresponding model according to the size of the focus of different patients, so that the process of selecting the needle model in the treatment is complicated, and the operation intensity of the operators is increased.

Disclosure of Invention

It is an object of the present application to provide an electrode needle to solve the problem that the exposed length of the electrode needle body is not adjustable.

According to one aspect of the present application, there is provided an electrode needle comprising an electrode needle body, a handle, characterized in that the electrode needle further comprises:

the outer sleeve is sleeved outside the electrode needle body;

the driving assembly is arranged in the handle, is fixedly connected with the outer sleeve and drives the outer sleeve to axially move along the electrode needle body when being acted on so as to adjust the exposed length of the electrode needle body.

In some embodiments, the handle comprises a first handle shell and a second handle shell, wherein the first handle shell is in butt joint with the second handle shell, a first sliding groove is formed at the butt joint position of the first handle shell and the second handle shell, and the driving assembly slides along the first sliding groove to enable the outer sleeve to axially move along the electrode needle body.

In some embodiments, the driving assembly includes an adjusting button, an adjusting fixing seat and a first elastic member, wherein the adjusting button is connected with the adjusting fixing seat through the first elastic member, and the adjusting fixing seat is fixedly connected with the outer sleeve.

In some embodiments, the outer surface of the first handle shell is provided with a plurality of length scale marks, and the first handle shell comprises scale grooves corresponding to the plurality of length scale marks and a second chute communicated with the scale grooves; the driving assembly further comprises a scale indicator connected with the adjusting button; wherein, when the adjusting button is acted on, the scale indicator moves from the scale groove to the second chute and moves along the second chute; and when the adjusting button stops being acted, the scale indicator moves to a scale position in the scale groove, and the length scale mark corresponding to the scale position in the length scale marks represents the current exposed length of the electrode needle body.

In some embodiments, the adjustment button is integrally formed with or fixedly connected to the scale indicator.

In some embodiments, the handle further comprises a knob assembly disposed at one of the first handle housing and the second handle housing distal from the working end of the electrode needle body; the knob assembly comprises a sequence number knob, and a plurality of sequence number identifiers are arranged on the outer surface of the sequence number knob; the first handle shell comprises a sequence number window, a current sequence number mark which is rotatably arranged on the sequence number knob can be displayed through the sequence number window, and the current sequence number mark is used for marking the electrode needle.

In some embodiments, the knob assembly further comprises a tail cap, a second resilient member, and a ball; the tail cap is internally provided with a plurality of hole sites, wherein the number of the hole sites arranged in the tail cap is the same as the number of the serial number marks arranged on the outer surface of the serial number knob; the second elastic piece is arranged in the serial number knob; the second elastic piece is connected with the tail cap through the ball, wherein one part of the ball is positioned in the second elastic piece, and the other part of the ball is positioned in a hole site of the tail cap; when the serial number knob is rotated, the ball and the second elastic piece leave from the current hole position of the tail cap and turn into the next hole position of the tail cap.

In some embodiments, the handle further comprises a front cap mounted to one of the first handle housing and the second handle housing proximate the working end of the electrode needle body.

In some embodiments, the electrode needle further comprises an energy input assembly, an output of the energy input assembly being electrically connected to the electrode needle body.

In some embodiments, the electrode needle further comprises a connector, the energy input assembly comprises a plug cable, one end of the plug cable is connected with the electrode needle body via the connector, and the other end of the plug cable receives external energy through a cable connection.

In some embodiments, the connecting piece is disposed in the handle, the electrode needle body is inserted into one end hole of the connecting piece through one end of the handle, and the output end of the energy input assembly is inserted into the other end hole of the connecting piece through the other end of the handle.

Compared with the prior art, the electrode needle provided by the application comprises an electrode needle body, a handle, an outer sleeve and a driving assembly, wherein the outer sleeve is sleeved outside the electrode needle body; the driving assembly is arranged in the handle, the driving assembly is fixedly connected with the outer sleeve, and the outer sleeve is driven to axially move along the electrode needle body when the driving assembly is acted on so as to adjust the exposed length of the electrode needle body. The exposed length of the electrode needle body can be adjusted through the movement of the outer sleeve so as to adapt to focuses of different sizes.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings, in which:

FIG. 1 shows a schematic diagram of an electrode needle structure according to one embodiment of the present application;

FIG. 2 illustrates an exploded view of an electrode needle according to one embodiment of the present application;

FIG. 3 shows a schematic view of the handle structure of an electrode needle according to one embodiment of the present application;

FIG. 4 shows a schematic view of a handle structure of an electrode needle according to another embodiment of the present application;

FIG. 5 illustrates a cross-sectional schematic view of a knob assembly according to one embodiment of the present application.

The same or similar reference numbers in the drawings refer to the same or similar parts.

Reference numerals

1. Electrode needle body

2. Handle

21. First handle shell

22. Second handle shell

23. Knob assembly

231. Sequence number knob

232. Tail cap

233. Second elastic piece

234. Ball bearing

24. Front cap

3. Outer sleeve

4. Driving assembly

41. Adjusting button

42. First elastic piece

43. Adjusting fixing seat

44. Scale indicator

5. Energy input assembly

6. Connecting piece

7. First chute

8. Second chute

9. Scale groove

10. Sequence number window

Detailed Description

The present application is described in further detail below with reference to the accompanying drawings.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above" and "over" a second feature includes both the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Referring to fig. 1, the application provides an electrode needle which comprises an electrode needle body 1 and a handle 2. The electrode needle also comprises an outer sleeve 3, and the outer sleeve 3 is sleeved outside the electrode needle body 1. In some embodiments, the outer sleeve 3 is made of an insulating material, including but not limited to polyimide. In some embodiments, the length of the outer sleeve 3 is less than the length of the electrode needle body 1. When the electrode needle is not used, the outer sleeve 3 can completely cover the part of the electrode needle body 1, which is exposed out of the handle 2, so that the exposed part of the electrode needle body 1 is protected. In some embodiments, the end of the outer sleeve near the working end of the electrode needle body 1 may be straight or may be a beveled tip.

The electrode needle also comprises a driving component 4, wherein the driving component 4 is arranged in the handle 2, the driving component 4 is fixedly connected with the outer sleeve 3, and the outer sleeve 3 is driven to axially move along the electrode needle body 1 when the driving component 4 is acted on so as to adjust the exposed length of the electrode needle body. In some embodiments, the drive assembly 4 is disposed within the handle 2 including the drive assembly 4 being housed within the handle 2. In some embodiments, the exposed length of the electrode needle 1 refers to the length of the portion of the electrode needle 1 not covered by the outer sleeve 3. In some embodiments, the position of the electrode needle body 1 is fixed, and the driving assembly 4 drives the outer sleeve 3 to move axially along the electrode needle body 1, so that the position of the electrode needle body 1 covered by the outer sleeve 3 is changed, thereby changing the exposed length of the electrode needle body.

Fig. 2 is an exploded view of an electrode needle provided in an embodiment of the present application, fig. 3 is a schematic view of a handle structure of the electrode needle provided in an embodiment of the present application, referring to fig. 2 and fig. 3, in some embodiments, the handle 2 includes a first handle shell 21 and a second handle shell 22, where the first handle shell 21 is in butt joint with the second handle shell 22, the first handle shell 21 and the second handle shell 22 form a first chute 7 at a butt joint position, and the driving assembly 4 slides along the first chute to enable the outer sleeve 3 to axially move along the electrode needle body 1. For example, the end of the first handle shell 21 that is in butt-joint connection with the second handle shell 22 is in a "concave" structure, and the end of the first handle shell that is in a "concave" structure is in butt-joint connection to form the first chute 7. The driving assembly 4 is arranged in the handle 2 through the first chute 7. The driving component 4 moves along the first sliding groove 7 when being acted on, so as to drive the outer sleeve 3 to move along the axial direction of the electrode needle body 1.

Fig. 4 is a schematic structural diagram of a handle according to another embodiment of the present application, referring to fig. 2 to 4, the driving assembly 4 includes an adjusting button 41, an adjusting fixing seat 43 and a first elastic member 42, wherein the adjusting button 41 is connected with the adjusting fixing seat 43 through the first elastic member 42, and the adjusting fixing seat 43 is fixedly connected with the outer sleeve 3. In some embodiments, the first resilient member 42 comprises one or more springs. The two ends of the first elastic member are respectively connected with the adjusting button 41 and the adjusting fixing seat 43. In some embodiments, the adjusting fixing seat 43 is provided with an outer sleeve hole, and the outer sleeve 3 is inserted into the outer sleeve hole to be fixedly connected with the adjusting fixing seat 43.

In some embodiments, the outer surface of the first handle shell 21 is provided with a plurality of length scale marks, and the first handle shell 21 comprises scale grooves 9 corresponding to the plurality of length scale marks and a second chute 8 communicated with the scale grooves; the drive assembly 4 further comprises a scale indicator 44 connected to the adjustment button; wherein, when the adjusting button 41 is acted on, the scale indicator 44 moves from the scale groove to the second chute 8 and moves along the second chute 8; when the adjusting button 41 stops being acted on, the scale indicator 44 moves to a scale position in the scale groove 9, and a length scale mark corresponding to the scale position in the plurality of length scale marks represents the current exposed length of the electrode needle body. In some embodiments, the plurality of length scale markings match an adjustable range of exposed lengths corresponding to the electrode needle body 1. For example, if the adjustable range is 0-40mm and the minimum adjustment length is 5mm, the plurality of length scale markings corresponds to 0, 5, 10, 15, …, 40. In some embodiments, the scale groove 9 includes a plurality of scale bits, each of the plurality of scale bits corresponding to one of the plurality of length scale marks. In some embodiments the adjustment button 41 is integrally formed or fixedly attached to the scale indicator 44. In some embodiments, when the adjusting button 41 is pressed, the first elastic member 42 contracts to displace the scale indicator 44, and moves down the scale groove to the second sliding groove 8 and along the second sliding groove 8. When the adjustment button 41 is acted on to slide along the first chute 7, the scale indicator 44 also slides along the second chute 8 simultaneously. When the adjustment is made to the desired exposed length, the adjustment button 41 stops being applied, and the scale indicator 44 moves to the corresponding scale position in the scale groove with the return of the first elastic member 42. The length scale mark corresponding to the scale position is the current exposed length of the electrode needle body 1. In this embodiment, the adjusting button 41 to be acted on for sliding adjustment is separately provided with the length scale mark, so that the adjustment inaccuracy caused by shielding the length scale mark when the user adjusts through the adjusting button 41 is avoided. And, when the adjustment of the exposed length of the electrode needle body 1 is not performed, the scale indicator 44 is located in a scale position of a length scale mark corresponding to the current exposed length of the electrode needle body 1, and the scale position can limit the scale indicator 44, so that the influence of other factors on the driving assembly 4 on the exposed length of the electrode needle body 1 is avoided, and the adjustment precision is affected.

Referring to fig. 5, in some embodiments, the handle further includes a knob assembly 23, and the knob assembly 23 is disposed at one end of the first handle housing 21 and the second handle housing 22 away from the working end of the electrode needle body 1; the knob assembly 23 comprises a serial number knob 231, and a plurality of serial number identifiers are arranged on the outer surface of the serial number knob 231; the first handle shell 21 is provided with a serial number window 10, and a current serial number identifier of the serial number knob 231 which is rotatably arranged can be displayed through the serial number window 10, and the current serial number identifier is used for marking the electrode needle. In some embodiments, the serial number identification includes, but is not limited to, identification of numbers, letters, or combinations thereof. The serial number window is an opening in the first handle shell 21, and the opening is close to one end of the first handle shell 21 away from the working end of the electrode needle body 1. The electrode pin is marked by setting the knob assembly 23 to align the required serial number mark with the serial number window so as to expose the serial number mark through the serial number window. For example, if the serial number identifier is a digital identifier, and the number "1" in the serial number identifier is aligned to the serial number window, the serial number window may display the number "1", and the electrode needle may be marked as a 1-number electrode needle, so that the electrode needle is marked and confusion is avoided. In some embodiments, the knob assembly 23 may be fixedly connected or movably connected to the first handle shell 21 and the second handle shell 22. The knob assembly 23 is movably connected with the first handle shell 21 and the second handle shell 22, so that the knob assembly 23 can be rotated and adjusted, and the adjustment of the serial number identifier currently displayed by the serial number window can be performed based on the requirement.

In some embodiments, referring to fig. 2-5, the knob assembly 23 further includes a tail cap 232, a second elastic member 233, and a ball 234; a plurality of hole sites are arranged in the tail cap 232, wherein the number of the hole sites arranged in the tail cap 232 is the same as the number of the serial number marks arranged on the outer surface of the serial number knob 231; the second elastic member 233 is disposed in the serial number knob 231, and is connected to the tail cap 232 through the ball 234, wherein a part of the ball 234 is disposed in the second elastic member 233, and another part of the ball 234 is disposed in the hole of the tail cap 232; when the serial number knob 231 is rotated, the balls 234 and the second elastic member 233 are moved away from the current hole site of the tail cap 232 and are rotated into the next hole site of the tail cap 232. In some embodiments, the balls 234 are made of a steel material. The second elastic member 233 includes a spring. In some embodiments, a plurality of hole sites are uniformly distributed at one end of the tail cap 232 connected to the serial number knob 231, and the number of the hole sites is the same as the number of serial number marks on the outer surface of the serial number knob 231. In some embodiments, a hole is provided in the end surface of the serial number knob 231 connected to the tail cap 232, and an end of the second elastic member 233 remote from the ball 234 is provided in the hole. When the serial number knob 231 is coupled to the tail cap 232, the portion of the ball 234 exposed from the second elastic member 233 may be inserted into a hole in the tail cap 232. When the serial number knob 231 is rotated, the hole in the serial number knob is displaced, so as to drive the ball 234 and the second elastic member 233 to rotate from the current hole of the tail cap 232 to the next hole of the tail cap 232. Through the arrangement of the tail cap 232 hole site, the serial number knob 231 not only has an operational paragraph feel when being rotated, but also plays a role in fixing when stopping rotating, and the displayed serial number mark is ensured not to be changed randomly.

In some embodiments, the handle 2 further includes a front cap 24, and the front cap 24 is mounted to one end of the first handle shell 21 and the second handle shell 22 near the working end of the electrode needle body. In some embodiments, the front cap 24 is further provided with a small hole for the electrode needle body 1 and the outer sleeve 3 to pass through.

In some embodiments, the electrode needle further comprises an energy input assembly 5, and an output end of the energy input assembly 5 is electrically connected with the electrode needle body 1. In some embodiments, the energy input assembly 5 includes, but is not limited to, a plug cable, an energy storage assembly, or a wireless energy input assembly. For example, if the energy input assembly includes a plug cable having one end receiving external energy and the other end electrically connected to the electrode needle body 1, the external energy is conducted to the electrode needle body 1 to perform ablation work. For another example, if the energy input assembly 5 includes an energy storage assembly, the energy storage assembly may store energy for offline use by wired or wireless energy charging, and the energy storage assembly is electrically connected to the electrode needle body 1 to directly provide energy for ablation. For another example, if the energy input assembly 5 includes a wireless energy input assembly, the wireless energy input assembly receives external energy wirelessly and then supplies energy to the ablation of the electrode needle through the electrical connection with the electrode needle body 1.

In some embodiments, the electrode needle further comprises a connector 6, and the energy input assembly 5 comprises a plug cable, one end of which is connected to the electrode needle body 1 via the connector 6, and the other end of which is connected to an external energy generating device. In some embodiments, the connector is a copper connector. In some embodiments, the external energy generating device includes, but is not limited to, a pulse generator, a radio frequency generator, or a microwave generator. The electrode needle is connected with an external energy generating device through a plug cable to receive external energy for ablation.

In some embodiments, the connecting piece 6 is disposed in the handle 2, the electrode needle body 1 is inserted into one end hole of the connecting piece through one end of the handle 2, and the output end of the energy input assembly 5 is inserted into the other end hole of the connecting piece 6 through the other end of the handle 2. For example, the electrode needle body 1 is inserted into a hole at one end of the connecting member 6 through one end of the handle 2 where the front cap 24 is provided, the output end of the energy input assembly 5 is inserted into a hole at the other end of the connecting member 6 through one end of the handle 2 where the knob assembly 23 is provided, and the energy input assembly 5 is electrically connected to the electrode needle body 1 through the connecting member 6.

It will be evident to those skilled in the art that the present application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is evident that the word "comprising" does not exclude other elements or steps, and that the singular does not exclude a plurality. A plurality of units or means recited in the apparatus claims can also be implemented by means of one unit or means in software or hardware. The terms "first," "second," and the like are used to denote a name, but not to denote any particular order.

Claims

1. An electrode needle comprising an electrode needle body, a handle, characterized in that the electrode needle further comprises:

the outer sleeve is sleeved outside the electrode needle body;

2. The electrode needle of claim 1, wherein the handle comprises a first handle housing and a second handle housing, wherein the first handle housing is in abutting connection with the second handle housing, the first handle housing and the second handle housing forming a first runner at the abutting connection, the drive assembly sliding along the first runner to move the outer sleeve axially along the electrode needle body.

3. The electrode needle of claim 2, wherein the drive assembly comprises an adjustment button, an adjustment holder, and a first elastic member, wherein the adjustment button is connected with the adjustment holder through the first elastic member, and the adjustment holder is fixedly connected with the outer sleeve.

4. The electrode needle of claim 3, wherein the outer surface of the first handle shell is provided with a plurality of length scale marks, and the first handle shell comprises scale grooves corresponding to the plurality of length scale marks and a second chute communicated with the scale grooves;

the driving assembly further comprises a scale indicator connected with the adjusting button;

wherein, when the adjusting button is acted on, the scale indicator moves from the scale groove to the second chute and moves along the second chute; and when the adjusting button stops being acted, the scale indicator moves to a scale position in the scale groove, and the length scale mark corresponding to the scale position in the length scale marks represents the current exposed length of the electrode needle body.

5. The electrode needle of any one of claims 2 to 4, wherein the handle further comprises a knob assembly disposed at one of the first and second handle shells distal from the working end of the electrode needle body;

the knob assembly comprises a sequence number knob, and a plurality of sequence number identifiers are arranged on the outer surface of the sequence number knob;

the first handle shell comprises a sequence number window, a current sequence number mark which is rotatably arranged on the sequence number knob can be displayed through the sequence number window, and the current sequence number mark is used for marking the electrode needle.

6. The electrode needle of claim 5, wherein the knob assembly further comprises a tail cap, a second resilient member, and a ball;

the tail cap is internally provided with a plurality of hole sites, wherein the number of the hole sites arranged in the tail cap is the same as the number of the serial number marks arranged on the outer surface of the serial number knob;

the second elastic piece is arranged in the serial number knob;

the second elastic piece is connected with the tail cap through the ball, wherein one part of the ball is positioned in the second elastic piece, and the other part of the ball is positioned in a hole site of the tail cap; when the serial number knob is rotated, the ball and the second elastic piece leave from the current hole position of the tail cap and turn into the next hole position of the tail cap.

7. The electrode needle of any one of claims 2 to 4, wherein the handle further comprises a front cap mounted to one of the first and second handle shells proximate the working end of the electrode needle body.

8. The electrode needle of any one of claims 1 to 4, further comprising an energy input assembly, an output of the energy input assembly being electrically connected to the electrode needle body.

9. The electrode needle of claim 8, further comprising a connector, wherein the energy input assembly comprises a plug cable, one end of the plug cable is connected to the electrode needle body via the connector, and the other end of the plug cable is connected to an external energy generating device.

10. The electrode needle of claim 9, wherein the connector is disposed within the handle, the electrode needle body is inserted into one end aperture of the connector through one end of the handle, and the output end of the energy input assembly is inserted into the other end aperture of the connector through the other end of the handle.