CN217853069U

CN217853069U - Biopsy ablation device

Info

Publication number: CN217853069U
Application number: CN202220895625.9U
Authority: CN
Inventors: 胡晓勇; 龙家超; 孔棉花; 赖燊
Original assignee: Shenzhen Niumai Technology Co ltd
Current assignee: Shenzhen Niumai Technology Co ltd
Priority date: 2021-05-21
Filing date: 2022-04-18
Publication date: 2022-11-22
Anticipated expiration: 2032-04-18
Also published as: CN218009937U; CN217611354U; CN218009799U; CN216628692U; CN216628691U; CN218009939U

Abstract

The utility model discloses a biopsy ablation device, which comprises an external tube body, a biopsy needle and an ablation needle, wherein the rear end of the ablation needle is provided with a first handle part, and the external tube body can be respectively matched with the biopsy needle and the ablation needle; a connecting end is connected to the rear end of the outer tube body, a second handle part is arranged at the rear end of the biopsy needle, a first connecting part is arranged on the connecting end, a second connecting part is arranged on the second handle part, and a third connecting part is arranged on the first handle part; the first connecting part can be detachably connected with the second connecting part or the third connecting part; the ablation needle is hollow inside to form an inner channel, a through pipe is arranged in the inner channel, a first fluid passage is formed in the through pipe, a second fluid passage is formed between the through pipe and the ablation needle, and the first fluid passage is communicated with the second fluid passage through the front end of the through pipe. The biopsy ablation device has more functions and can adapt to the actual demand in the process of tumor treatment.

Description

Biopsy ablation device

Technical Field

The utility model belongs to the field of medical equipment, concretely relates to biopsy melts device.

Background

Biopsy needles are a common medical device that is used to sample human tissue, are a common tool in clinical diagnosis, and are more commonly used in the detection of tumors.

During the use process, the biopsy needle needs to be inserted into human tissue, and the human tissue is sampled through the relative movement between the biopsy needle of the biopsy needle and the external tube body.

However, the existing biopsy needle has single function, can only be used for sampling human tissues, and cannot meet the requirements of clinical multiple functions.

Disclosure of Invention

An object of the utility model is to provide a biopsy melts device, biopsy melts device function is more, can adapt to the actual demand of tumour treatment in-process.

The biopsy ablation device comprises an external tube body, a biopsy needle and an ablation needle, wherein a first handle part is arranged at the rear end of the ablation needle, and the external tube body can be respectively matched with the biopsy needle and the ablation needle; a connecting end is connected to the rear end of the outer tube body, a second handle part is arranged at the rear end of the biopsy needle, a first connecting part is arranged on the connecting end, a second connecting part is arranged on the second handle part, and a third connecting part is arranged on the first handle part; the first connecting part can be detachably connected with the second connecting part or the third connecting part; the ablation needle is hollow inside to form an inner channel, a through pipe is arranged in the inner channel, a first fluid passage is formed in the through pipe, a second fluid passage is formed between the through pipe and the ablation needle, and the first fluid passage is communicated with the second fluid passage through the front end of the through pipe.

In one embodiment, the first handle portion is hollow to form a sliding cavity, an adjusting member is arranged in the sliding cavity, the ablation needle is fixedly connected with the adjusting member, at least two positioning notches are arranged in the longitudinal direction of the first handle portion, and a positioning elastic sheet is arranged on the adjusting member and matched with the positioning notches.

In one embodiment, the ablation needle body is made of a conductive material, a conductive layer is formed on the outer surface of the needle body, the handle is made of an insulating material, and an insulating film layer is arranged on the outer surface of the needle body and divides the conductive layer into at least two conductive sections.

In one embodiment, the adjusting piece comprises a sliding block and a button, and the sliding block is fixedly connected with the button; the first handle portion is provided with a sliding groove, the sliding block is arranged in the sliding cavity, and the button extends out of the sliding groove.

In one embodiment, the first handle portion includes a handle body and a detaching head, the handle body and the detaching head are connected, and the sliding groove is provided on the handle body and extends to a front end of the handle body.

In one embodiment, a lead wire is arranged at the rear end of the first handle part and is in conductive connection with the ablation needle; the rear end of the first handle part is provided with an air duct which is communicated with the through pipe.

In one embodiment, at least two fastening protrusions are arranged on the connecting end head, and the first connecting part is the fastening protrusion; the second handle part is provided with at least two buckle notches, the second connecting part is the buckle notch, and the buckle bulge is matched with the buckle notch.

In one embodiment, at least two fastening protrusions are arranged on the connecting end head, and the first connecting part is the fastening protrusion; the first handle part is provided with at least two buckle defects, the third connecting part is the buckle defect, and the buckle bulge is matched with the buckle defect.

In one embodiment, the front end of the biopsy needle has a first pointed end, the biopsy needle is provided with a biopsy recess located at a rear position of the front end, and the outer tube closes or opens the biopsy recess when the biopsy needle is slidably engaged with the outer tube.

In one embodiment, the second handle includes an outer shell, a slider, an elastic member and a loading part, the slider is mounted on the outer shell and can be in sliding fit with the outer shell, the biopsy needle is fixedly connected with the slider and the loading part at the same time, the elastic member is arranged between the slider and the outer shell, a locking part is arranged in the longitudinal sliding direction of the slider and the outer shell, and an unlocking part is arranged on the loading part and corresponds to the locking part.

The utility model provides a technical scheme has following advantage and effect:

the external tube body of the biopsy ablation device can move axially relative to the biopsy needle, and after the front end of the biopsy ablation device is inserted into human tissues, a small amount of human tissues can be taken out from the biopsy concave part through the relative movement between the external tube body and the biopsy needle for pathological detection; on the other hand, the biopsy needle is internally provided with a hollow inner channel, a through pipe is arranged in the inner channel to form a first fluid passage and a second fluid passage, a fluid-shaped cooling medium can be injected into the through pipe and is used for carrying out low-temperature ablation operation on the biopsy needle and the peripheral human tissues thereof, and the biopsy ablation needle has more functions and can better adapt to clinical requirements.

Drawings

Fig. 1 is a schematic view of a biopsy ablation device according to a first embodiment of the present invention;

fig. 2 is a cross-sectional view of a biopsy ablation device according to a first embodiment of the present invention;

fig. 3 is an exploded view of the biopsy ablation device according to a first embodiment of the present invention;

fig. 4 is a diagram illustrating a first state of use of the biopsy ablation device according to a first embodiment of the present invention;

FIG. 5 is a diagram illustrating a first embodiment of the present invention, illustrating a second state of use of the biopsy ablation device;

fig. 6 is an enlarged cross-sectional view of the ablation needle engaged with the outer tube according to the first embodiment of the present invention;

fig. 7 is a top view of the base according to the first embodiment of the present invention;

fig. 8 is a perspective view of the base according to the first embodiment of the present invention;

fig. 9 is a structural diagram of the loading part in the first embodiment of the invention;

fig. 10 is a structural diagram of the insulation sleeve and the connection terminal according to the first embodiment of the present invention;

fig. 11 is an external view of the biopsy ablation device according to the second embodiment of the present invention;

fig. 12 is an enlarged cross-sectional view of the ablation needle engaged with the outer tube according to the second embodiment of the present invention;

description of the reference numerals:

11. an outer tube body 111, an insulating sleeve 112, an extraction sleeve 12, a biopsy needle 13, an ablation needle 131, an insulating film layer 132, a conductive section,

21. connecting tip 22, second handle 221, front cover 2211, hinge axis 222, outer housing 2221, base 223, sliding piece 224, loading piece 225, elastic piece 226, locking piece 227, unlocking piece 228, annular lug 229, pull handle,

23. a first handle part 2301, a first lead wire 2302, a second lead wire 234, a disassembly head 235, an air duct 24, a sliding conductive part,

31. the clamping buckle protrusion 32 and the clamping buckle gap,

42. an adjusting piece 421, a sliding block 422, a button 43, a positioning spring piece 44 and a positioning notch,

51. a first tip, 52, a biopsy recess, 53, a second tip,

60. inner channel, 61, heating element, 62, through tube, 621, first fluid passage, 622, second fluid passage.

Detailed Description

In order to facilitate an understanding of the invention, specific embodiments thereof will be described in more detail below with reference to the accompanying drawings.

As used herein, "first and second" \ 8230 "are used unless otherwise indicated or defined and are used merely to distinguish between names and do not denote any particular quantity or order.

As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items, unless specified or otherwise defined.

It should be noted that "fixed to" or "connected to" in this document may be directly fixed to or connected to one element or may be indirectly fixed to or connected to one element.

Example one

As shown in fig. 1 to 10, the biopsy ablation device includes an outer tube 11, a biopsy needle 12, an ablation needle 13; the outer tube 11 can be fitted with a biopsy needle 12 and an ablation needle 13, respectively.

The front end of the biopsy needle 12 is provided with a first tip 51, and the front end of the ablation needle 13 is provided with a second tip 53; the external tube 11 comprises an insulating sleeve 111 and an extraction sleeve 112, the insulating sleeve 111 is sleeved outside the extraction sleeve 112 and is simultaneously bonded with a connection end 21 at the rear end of the insulating sleeve 111, a second handle 22 is arranged at the rear end of the biopsy needle 12, a first handle 23 is arranged at the rear end of the ablation needle 13, a first connection part is arranged on the connection end 21, a second connection part is arranged on the second handle 22, and a third connection part is arranged on the first handle 23; first connecting portion can with the connection can be dismantled to the second connecting portion, first connecting portion can with the connection can be dismantled to the third connecting portion, and specific connection structure is as follows:

two buckle bulges 31 are arranged on the connecting end head 21, and the first connecting part is the buckle bulges 31; the second handle 22 is provided with two snap notches 32, the second connecting portion is the snap notch 32, and the snap protrusion 31 is matched with the snap notch 32. The rear end of the connecting end 21 is provided with a positioning head, the buckle protrusion 31 is arranged at the front end of the positioning head, the front end of the second handle 22 is provided with an insertion hole, the positioning head corresponds to the insertion hole, and the buckle notch 32 is arranged at the outer side of the insertion hole. Through the cooperation between buckle arch 31 and the buckle lack, can realize connect end 21 with can dismantle between the second handle 22 is connected after the rear end of connecting end 21 is equipped with the location head, can make between them connection more reliable through this location head.

Similarly, two fastening protrusions 31 are arranged on the connecting end 21, and the first connecting part is the fastening protrusion 31; two snap notches 32 are arranged on the first handle portion 23, the third connecting portion is the snap notch 32, and the snap protrusion 31 is matched with the snap notch 32. The rear end of the connecting end 21 is provided with a positioning head, the buckle protrusion 31 is arranged at the front end of the positioning head, the front end of the first handle portion 23 is provided with an insertion hole, the positioning head corresponds to the insertion hole, and the buckle notch 32 is arranged outside the insertion hole.

A front cover 221 is provided at the front end of the second handle 22, the front cover 221 is movably connected to the front end of the second handle 22 by a hinge shaft 2211, and the front cover 221 is used for covering the connection tip 21 when the connection tip 21 is connected to the second handle 22. When the connection end 21 is connected to the second handle 22, the front cover 221 covers the connection end 21 for convenient operation.

The biopsy ablation device of the embodiment comprises an outer tube body 11, a biopsy needle 12 and an ablation needle 13; the connecting end 21 at the rear end of the outer tube 11 is connected with the second handle 22 at the rear end of the biopsy needle 12, and at this time, the outer tube 11 is matched with the biopsy needle 12, and the biopsy ablation device can be used as a biopsy extraction device for extracting human tissues to perform biopsy (as shown in fig. 4); the connecting end 21 at the rear end of the outer tube 11 is connected to the first handle 23 at the rear end of the ablation needle 13, and the outer tube 11 is engaged with the ablation needle 13, so that the biopsy ablation device can be used as an ablation device for ablating a specific part (such as a tumor) of a human tissue (as shown in fig. 5).

A removal head 35 is provided at the front section of the first shank portion 23 to facilitate insertion of the connection end piece 21.

The second handle 22 includes an outer housing 222, a slider 223, an elastic member 225 and a loading member 224, wherein two opposite sides of the outer housing 222 are respectively provided with an annular ear 228, a base 2221 is fixedly disposed in the outer housing 222, the slider 223 is mounted on the base 2221 of the outer housing 222 and can be slidably fitted with respect to the base 2221, the biopsy needle 12 is fixedly connected with the slider 223 and the loading member 224 at the same time, the elastic member 225 is disposed between the slider 223 and the base 2221, a locking portion 226 is disposed in a longitudinal sliding direction of the slider 223 and the base 2221, an unlocking portion 227 is disposed on the loading member 224, and the unlocking portion 227 corresponds to the locking portion 226. The biopsy needle 12 is provided with a biopsy recess 52, the biopsy recess 52 is located at a rear side position of the front end, and when the biopsy needle 12 is slidably engaged with the outer tube 11, the outer tube 11 closes or opens the biopsy recess 52.

The external tube 11 of the biopsy ablation device can move axially relative to the biopsy needle 12, and after the front end of the biopsy ablation device is inserted into human tissues, a small amount of human tissues can be taken out of the biopsy concave part 52 for pathological detection through the relative movement between the external tube 11 and the biopsy needle 12; the operation mode is as follows:

the operator holds the ring-shaped ear 228 with one hand and pulls the pull handle 229 of the loading part 224 with the other hand, the loading part 224 pulls the sliding part 223 and the biopsy needle 12 connected with the sliding part 223 and moves backwards against the elastic force of the elastic part 225, when the sliding part 223 moves to the set position, the locking part 226 locks the two positions, at this time, the biopsy concave part 52 of the biopsy needle 12 is closed by the outer tube body 11, the front end of the biopsy ablation device is inserted into the human tissue, the loading part 224 is pushed forwards to enable the biopsy needle 12 to reach the lifted position, and the biopsy concave part 52 is exposed, when the loading part 224 is pushed to a certain position, the unlocking part 227 at the front end of the loading part 224 unlocks the locking part 226, the sliding part 223 rapidly moves backwards under the action of the elastic part 225 and drives the biopsy needle 12 to rapidly move backwards, the human tissue in the biopsy concave part 52 is kept inside the outer tube body 11 through the cutting action of the outer tube body 11, and the biopsy device is drawn out, and the extracted human tissue can be pathologically detected.

The outer surface of the ablation needle 13 is provided with an insulating film layer 131, the insulating film layer 131 divides the conductive layer into at least two conductive sections 132, when electric field pulse ablation is carried out, each conductive section 132 forms an ablation electric field, the ablation area is divided through each separated ablation electric field, the defect caused by the fact that the ablation area is too large is avoided, the temperature of the ablation area is prevented from rising, the ablation area is controlled more easily, damage to normal human tissues is reduced, when large tumors are ablated, needle withdrawing is not needed, layout is carried out again, tumor cell transfer is reduced, and operation risk is greatly reduced.

The first handle part 23 is hollow to form a sliding cavity, an adjusting part 42 is arranged in the sliding cavity, the adjusting part 42 comprises a sliding block 421 and a button 422, and the sliding block 421 is fixedly connected with the button 422; the ablation needle 13 is fixedly connected with the adjusting member 42, a sliding groove is formed in the first handle portion 23, the sliding block 421 is arranged in the sliding cavity, and the button 422 extends out of the sliding groove. At least two positioning notches 44 are arranged in the longitudinal direction of the first handle part 23, a positioning elastic sheet 43 is arranged on the adjusting part 42, and the positioning elastic sheet 43 is matched with the positioning notches 44. In this embodiment, the exposed length of the ablation needle 13 can be adjusted by adjusting the longitudinal position of the adjustment member 42. After the ablation needle 13 is adjusted in place, the positioning elastic sheet 43 is loosened and positioned through the positioning notch 44, so that the ablation needle 13 is prevented from randomly and longitudinally moving.

The rear end of the first handle 23 is provided with a first lead wire 231, the first lead wire 231 is connected with the ablation needle 13 in a conductive manner, and the first handle 23 can be provided with high-voltage pulse power through the first lead wire 231, the specific structure of the structure is shown in fig. 3, a sliding conductive member 24 is arranged in the first handle 23, the sliding conductive member 24 is connected with the first lead wire 231 in a conductive manner, the ablation needle 13 and the sliding conductive member 24 are always in a conductive manner and can move relative to the sliding conductive member 24, when the longitudinal position of the ablation needle 13 is adjusted through the adjusting member 42, the conductive connection between the first lead wire 231 and the ablation needle 13 cannot be disconnected, and the overall structure is more reliable and stable after the sliding conductive member 24 is arranged.

The body of the ablation needle 13 is made of a conductive material and forms a conductive layer on the outer surface of the body, the handle is made of an insulating material, and an insulating film 131 is arranged on the outer surface of the body, and the insulating film 131 divides the conductive layer into at least two conductive segments 132.

Example two

As shown in fig. 9 to 10, in the present embodiment, a second lead 2302 is further provided at the rear end of the first handle 23, an inner channel 60 is formed in the ablation needle 13 in a hollow manner, the front end of the inner channel 60 is closed, the inner channel 60 is located at a position close to the rear end of the tip of the ablation needle 12, a duct 62 and a heating element 61 are provided in the inner channel 60, power can be supplied to the heating element 61 through the second lead 2302, and ablation is performed by heating the heating element 61 at a high temperature.

The principle is the same as the first embodiment, and is not described herein again.

EXAMPLE III

As shown in fig. 9 to 11, in the present embodiment, an inner channel 60 is formed in the ablation needle 13, a through tube 62 is disposed in the inner channel 60, a first fluid passage 621 is formed in the through tube 62, a second fluid passage 622 is formed between the through tube 62 and the ablation needle 13, and the first fluid passage 621 and the second fluid passage 622 communicate with each other through the front end of the through tube 62. Meanwhile, an air duct 235 is arranged at the rear end of the first handle part 23, and gaseous or liquid refrigerant is provided to the first fluid passage 621 through the air duct 235, so that low-temperature ablation of gas can be realized through an ablation needle.

The biopsy ablation device of the present embodiment can be used as a biopsy extraction device for extracting human tissue for biopsy (as shown in fig. 4); the connecting end 21 at the rear end of the outer tube 11 is connected to the first handle 23 at the rear end of the ablation needle 13, and the outer tube 11 is engaged with the ablation needle 13, and the biopsy ablation device can be used as an ablation device for ablating a specific part (such as a tumor) of a human tissue (as shown in fig. 10).

The purpose of the above embodiments is to reproduce and derive the technical solutions of the present invention exemplarily, and to describe the technical solutions, the purposes and the effects of the present invention completely, which aims to make the public understand the disclosure of the present invention more thoroughly and comprehensively, and not to limit the protection scope of the present invention.

The above examples are not intended to be exhaustive list of the present invention, and there may be many other embodiments not listed. Any replacement and improvement made on the basis of not violating the concept of the utility model belong to the protection scope of the utility model.

Claims

1. The biopsy ablation device is characterized by comprising an external tube body, a biopsy needle and an ablation needle,

the rear end of the ablation needle is provided with a first handle part, and the external tube body can be respectively matched with the biopsy needle and the ablation needle; a connecting end is connected to the rear end of the outer tube body, a second handle part is arranged at the rear end of the biopsy needle, a first connecting part is arranged on the connecting end, a second connecting part is arranged on the second handle part, and a third connecting part is arranged on the first handle part; the first connecting part can be detachably connected with the second connecting part or the third connecting part;

the ablation needle is hollow inside to form an inner channel, a through pipe is arranged in the inner channel, a first fluid passage is formed in the through pipe, a second fluid passage is formed between the through pipe and the ablation needle, and the first fluid passage is communicated with the second fluid passage through the front end of the through pipe.

2. The biopsy ablation device of claim 1,

the hollow first handle part forms a sliding cavity, an adjusting part is arranged in the sliding cavity, the ablation needle is fixedly connected with the adjusting part, at least two positioning notches are arranged in the longitudinal direction of the first handle part, and a positioning elastic sheet is arranged on the adjusting part and matched with the positioning notches.

3. The ablation device of claim 2 wherein the body of the ablation needle is formed of an electrically conductive material and an electrically conductive layer is formed on an outer surface of the body, the handle is formed of an insulating material, and an insulating membrane layer is disposed on the outer surface of the body and separates the electrically conductive layer into at least two electrically conductive segments.

4. The ablation device of claim 3 wherein said adjustment member comprises a slider and a button, said slider fixedly attached to said button; the first handle portion is provided with a sliding groove, the sliding block is arranged in the sliding cavity, and the button extends out of the sliding groove.

5. The ablation device of claim 4 wherein said first handle portion includes a handle body and a removal head, said handle body and said removal head being connected, said runner being provided on said handle body and extending to a forward end of said handle body.

6. The ablation device of any one of claims 1 to 5 wherein a lead is provided at the rear end of the first handle portion, the lead being in conductive communication with the ablation needle; the rear end of the first handle part is provided with an air duct which is communicated with the through pipe.

7. The biopsy ablation device of any one of claims 1-5,

at least two buckle bulges are arranged on the connecting end head, and the first connecting part is the buckle bulge; the second handle part is provided with at least two buckle notches, the second connecting part is the buckle notch, and the buckle bulge is matched with the buckle notch.

8. The biopsy ablation device of any one of claims 1-5,

at least two buckle bulges are arranged on the connecting end head, and the first connecting part is the buckle bulge; the first handle part is provided with at least two buckle notches, the third connecting part is the buckle notch, and the buckle protrusion is matched with the buckle notch.

9. The biopsy ablation device of any one of claims 1-5,

the front end of the biopsy needle is provided with a first tip end, the biopsy needle is provided with a biopsy concave part, the biopsy concave part is located at the rear side position of the front end, and when the biopsy needle is matched with the outer tube body in a sliding mode, the outer tube body closes or opens the biopsy concave part.

10. The biopsy ablation device of any one of claims 1 to 5, wherein the second handle comprises an outer housing, a slider mounted on the outer housing and slidably engaged with respect to the outer housing, a resilient member secured to the slider and the loading member, and an unlocking member disposed between the slider and the outer housing, wherein a locking portion is disposed in a longitudinal sliding direction of the slider and the outer housing, and an unlocking portion is disposed on the loading member and corresponds to the locking portion.