CN216628691U - Electric field pulse ablation device - Google Patents
Electric field pulse ablation device Download PDFInfo
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- CN216628691U CN216628691U CN202121545507.7U CN202121545507U CN216628691U CN 216628691 U CN216628691 U CN 216628691U CN 202121545507 U CN202121545507 U CN 202121545507U CN 216628691 U CN216628691 U CN 216628691U
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Abstract
The utility model discloses an electric field pulse ablation device, which comprises a seat body, wherein at least two ablation needles are arranged on the seat body and arranged in parallel, each ablation needle is made of a conductive material, the front end of the ablation needle is an insertion end, the rear end of the ablation needle is a guide connection end, and the ablation needle is hollow to form a temperature adjusting channel. The utility model can effectively reduce the risk of ablation.
Description
Technical Field
The utility model belongs to the field of medical instruments, and particularly relates to an electric field pulse ablation device.
Background
Ablation therapy is a common treatment mode in tumor treatment, and has the effect of generating necrosis of cells in a tumor through temperature, chemical modes and the like.
Temperature ablation can be classified as cold field or thermal field ablation, which is used to dehydrate and form ice crystals in the cells of the secondary tumor, or to thermally coagulate and necrose the secondary tumor. However, due to the influence of heat conduction, the above ablation methods are all liable to affect the surrounding tissues and cause damage to the surrounding normal tissues, especially in the case of surrounding blood vessels or nerves, thereby greatly increasing the risk of operation.
Based on the above, an electric field pulse ablation method has been developed, which forms a high-voltage electric field pulse in the region to be ablated and pierces the cell membrane to cause the necrosis of tumor cells, and which can avoid all the defects caused by temperature ablation, so that the effect is very obvious.
However, the existing electric field pulse ablation device has the following defects:
1. the existing electric field pulse ablation device mostly adopts unipolar ablation needles, when ablation is carried out, the electric field pulse ablation device with each unipolar needle needs to be inserted into a region to be ablated in a substep manner, then the electric field pulse ablation device is electrified, an ablation electric field region is formed between two (unipolar) electric field pulse ablation devices, and then ablation treatment is carried out on tissue to be ablated.
2. When ablation is carried out, an electric field can be formed between the ablation needles, and current flow is formed on the ablation needles, so that heat can be generated, the precise control of ablation temperature cannot be realized, and the risk of ablation is increased.
Disclosure of Invention
The utility model aims to provide an electric field pulse ablation device which can effectively reduce the risk of ablation.
The electric field pulse ablation device comprises a seat body, wherein at least two ablation needles are arranged on the seat body and arranged in parallel, each ablation needle is made of a conductive material, the front end of each ablation needle is an insertion end, the rear end of each ablation needle is a guide connection end, and the inside of each ablation needle is hollow to form a temperature adjusting channel.
In one embodiment, an air cooling pipe is arranged in the temperature adjusting channel.
In one embodiment, a heating element is arranged in the tempering channel.
In one embodiment, a heating element is disposed within the air-cooled duct.
In one embodiment, a temperature sensing element is arranged in the tempering channel.
In one embodiment, the seat body is provided with a mounting hole; at least one of the ablation needles is movably arranged in the mounting hole and is connected with the rotating mechanism at the position close to the rear end, and the front end of the ablation needle is deviated to the side part relative to the rear end.
In one embodiment, the ablation needle comprises a first straight section, a second straight section and an offset transition section, the first straight section and the second straight section are along the longitudinal direction of the ablation needle, the offset transition section is located between the first straight section and the second straight section, and the front end of the offset transition section is offset to the side part relative to the rear end of the offset transition section.
In one embodiment, at least two ablation needles are movably arranged in the mounting hole at the front position and are connected with the rotating mechanism at the rear position.
In one embodiment, the seat body comprises a main seat and an outer insulating layer positioned in front of the main seat, the outer insulating layer is sleeved on the ablation needle, and a longitudinal adjusting device is arranged between the main seat and the outer insulating layer.
In one embodiment, an adjusting sleeve is arranged between the main seat and the outer insulating layer, an adjusting nut is arranged on the outer insulating layer, a matching adjusting thread is arranged between the adjusting sleeve and the adjusting nut, and the longitudinal adjusting device comprises an adjusting sleeve and an adjusting nut.
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, 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, an outer insulating layer is arranged outside each ablation needle, and the outer insulating layer wraps each ablation needle.
The technical scheme provided by the utility model has the following advantages and effects:
1. the electric field pulse ablation device comprises at least two ablation needles, wherein the at least two ablation needles are arranged on a seat body, and when the at least two ablation needles are inserted into a region to be ablated through the seat body at one time; because at least two ablation needles are arranged on the seat body in parallel, when the ablation device is inserted, the distance and the angle between the ablation needles can be effectively ensured, and the ablation effect is improved.
2. The ablation needle is hollow inside to form a temperature regulation channel, the temperature of the ablation needle (and surrounding tissues) can be reduced through a cooling medium (such as a gaseous cooling medium), the temperature of the ablation needle (and surrounding tissues) can be increased through other media, and a temperature control element (such as a heating wire) can be arranged in the temperature regulation channel to increase the temperature of the ablation needle (and surrounding tissues).
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and, together with the description, serve to explain the principles and effects of the utility model.
Unless otherwise specified or defined, the same reference numerals in different figures refer to the same or similar features, and different reference numerals may be used for the same or similar features.
FIG. 1 is a block diagram of an electric field pulse ablation device according to a first embodiment of the present invention;
FIG. 2 is a cross-sectional view of the electric-field-pulse ablation device in accordance with a first embodiment of the present invention;
FIG. 3 is an exploded view of the electric-field-pulse ablation device in a closed position, in accordance with a first embodiment of the present invention;
FIG. 4 is an exploded view of the electric-field-pulse ablation device in an open state, in accordance with a first embodiment of the present invention;
FIG. 5 is a cross-sectional view of the rear seat in accordance with a first embodiment of the present invention;
FIG. 6 is a top view of the rear seat in accordance with a first embodiment of the present invention;
FIG. 7 is a cross-sectional view of the front seat according to a first embodiment of the present invention;
FIG. 8 is a top view of the front seat in accordance with one embodiment of the present invention;
FIG. 9 is a block diagram of the adjusting knob according to the first embodiment of the present invention;
FIG. 10 is a cross-sectional view of the adjustment knob according to a first embodiment of the present invention;
FIG. 11 is a structural diagram of an adjusting pin according to a first embodiment of the present invention;
FIG. 12 is a block diagram of the electric-field-pulse ablation device, according to a second embodiment of the present invention;
FIG. 13 is an exploded view of the electric-field-impulse ablation device, in accordance with a second embodiment of the present invention;
FIG. 14 is a cross-sectional view of the electric field pulse ablation device in a retracted state, in accordance with a second embodiment of the present invention;
FIG. 15 is a cross-sectional view of the electric field pulse ablation device in an extended and open configuration, in accordance with a second embodiment of the present invention;
FIG. 16 is a cross-sectional view of the electric field pulse ablation device in an extended and closed position, in accordance with a second embodiment of the present invention;
FIG. 17 is a cross-sectional view of an adjustment sleeve according to a second embodiment of the present invention;
FIG. 18 is a cross-sectional view of the lower nut of the second embodiment of the present invention;
FIG. 19 is a sectional view of a front seat in accordance with a second embodiment of the present invention;
FIG. 20 is a partial cross-sectional view of the electric-field-pulse ablation device in accordance with a third embodiment of the utility model;
FIG. 21 is a partial enlarged view of FIG. 20;
FIG. 22 is a block diagram of the electric field pulse ablation device in accordance with a fourth embodiment of the present invention;
FIG. 23 is an enlarged cross-sectional view of FIG. 22;
FIG. 24 is a block diagram of the electric field pulse ablation device in accordance with a fifth embodiment of the present invention;
FIG. 25 is an exploded view of the electric field impulse ablation device, in accordance with a fifth embodiment of the present invention;
FIG. 26 is an enlarged view of a fifth embodiment of the present invention, showing the electric-field-pulse ablation device in a closed position;
FIG. 27 is an enlarged, fragmentary view of a fifth embodiment of the utility model, with the electric-field-pulse ablation device in an open position;
FIG. 28 is a block diagram of the electric field pulse ablation device in accordance with a sixth embodiment of the present invention;
FIG. 29 is a block diagram of an electric field pulse ablation device in accordance with a seventh embodiment of the present invention;
FIG. 30 is an enlarged view in partial section of FIG. 29;
FIG. 31 is a block diagram of an electric field pulse ablation device in accordance with an eighth embodiment of the present invention;
FIG. 32 is an enlarged, fragmentary view of an eighth embodiment of the utility model, the electric-field-pulse ablation device in a closed position;
FIG. 33 is an enlarged partial view of the electric-field-pulse ablation device in an open position, in accordance with an eighth embodiment of the present invention;
description of the reference numerals:
10. a seat body 11, a main seat 111, a rear seat 1111, a window 1112, an arc-shaped guide groove,
112. front seat 113, positioning hole 114, top end spring 13, outer conduit 131, guide block 132, adjusting nut 14, inner cavity 15, adjusting sleeve 151, internal thread 152, external thread 153, lower nut 1531, middle hole 154, pin hole 16, mounting hole 17, connecting thread,
20. a rotating mechanism, 201, a first gear, 202, a second gear, 23, an adjusting knob, 231, raised grains, 232, a limiting rod, 24, an adjusting pin shaft, 241, an adjusting hole, 242, a fixing nut, 243, a fixing thread, 244, a limiting end, 245, a cylindrical section, 246, a rotating matching section,
40. the ablation needle 41, the first straight section 42, the second straight section 43, the offset transition section 44, the insulating film layer 441, the conductive section 45, the temperature adjusting channel 451, the heating wire 452, the inner insulating tube 453 and the outer insulating layer.
Detailed Description
In order to facilitate an understanding of the utility model, specific embodiments thereof will be described in more detail below with reference to the accompanying drawings.
Unless specifically stated or otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In the case of a real-world scenario incorporating the technical solution of the present invention, all technical and scientific terms used herein may also have meanings corresponding to the purpose of achieving the technical solution of the present invention.
As used herein, unless otherwise specified or defined, "first" and "second" … are used merely for name differentiation 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 will be understood that when an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present; when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present.
As used herein, unless otherwise specified or defined, the terms "comprises," "comprising," and "comprising" are used interchangeably to refer to the term "comprising," and are used interchangeably herein.
It is needless to say that technical contents or technical features which are contrary to the object of the present invention or clearly contradicted by the object of the present invention should be excluded.
Example one
As shown in fig. 1 to 11, the electric field pulse ablation device includes a holder body 10, two ablation needles 40 are disposed on the holder body 10, the two ablation needles 40 are disposed in parallel, each ablation needle 40 is made of a conductive material, the front end of the ablation needle 40 is an insertion end, a tip portion is disposed at the insertion end, and the rear end of the ablation needle 40 is a guide connection end.
The base 10 includes a main base 11 and an outer catheter 13 located in front of the main base 11, and the outer catheter 13 is sleeved on the ablation needle 40. The main seat 11 comprises a rear seat 111 and a front seat 112, the rear seat 111 is connected with the front seat 112 through a connecting thread 17, an inner cavity 14 is formed between the rear seat 111 and the front seat 112, two mounting holes 16 are formed in the front seat 112, a guide block 131 is arranged in the outer catheter 13, two mounting holes 16 are also formed in the guide block 131, the two ablation needles 40 movably penetrate through the mounting holes 16, and the position close to the rear end is connected with the rotating mechanism 20. An outer insulating layer 453 is disposed outside each of the two ablation needles 40, the two outer insulating layers 453 wrap the ablation needles 40, and the front ends of the ablation needles 40 are exposed.
The rotating mechanism 20 comprises a first gear 201, a second gear 202, an adjusting knob 23 and an adjusting pin shaft 24, wherein two adjusting rods 232 are arranged on the adjusting knob 23, two arc-shaped guide grooves 1112 are arranged on the rear seat 111, and when the adjusting knob 23 rotates, the circumference of the adjusting knob is limited by the two arc-shaped guide grooves 1112, so that the adjusting knob 23 can only rotate within a certain angle; the first gear 201, the second gear 202 and the adjusting pin 24 are located in the inner cavity 14, the outer side of the adjusting knob 23 is provided with concave-convex grains 231, the number of the second gear 202 is two, the rotating shafts of the first gear 201 and the second gear 202 are inserted into the positioning hole 113 and can rotate relative to the positioning hole 113, the positions close to the rear ends of the two ablation needles 40 are fixedly connected with the second gear 202, and the first gear 201 is located between the two second gears 202 and is meshed with the two second gears 202. The adjusting pin shaft 24 is of a hexagonal structure, the rear end of the adjusting pin shaft has a fixing thread 243, the lower end of the adjusting pin shaft is a limiting end 244, the middle section of the adjusting pin shaft has a cylindrical section 245 and a rotating matching section 246, the limiting end 244 is clamped in the front seat 112 and is circumferentially connected with the adjusting pin shaft 24 through the first gear 201, the rear side of the rear seat 111 is provided with an adjusting hole 241, the outer end of the adjusting pin shaft 24 penetrates through the adjusting hole 241, the outer end of the adjusting pin shaft 24 is circumferentially connected with the adjusting knob 23 through a fixing nut 242, the cylindrical section 245 is matched with the adjusting hole 241, the rotating matching section 246 is a hexagonal nut which is matched with the adjusting knob 23, and when the adjusting knob 23 rotates, the adjusting pin shaft 24 drives the first gear 201 to rotate.
The two ablation needles 40 are movably arranged in the mounting hole 16 near the front end, and are connected with the rotating mechanism 20 near the rear end, and the first gear 201 can be driven to rotate through the adjusting knob 23 and the adjusting pin shaft 24, so as to drive the two second gears 202 to rotate, thereby achieving the purpose of rotating the two ablation needles 40. A window 1111 is provided at a side of the rear seat 111 for passing a wire connected to the ablation needle 40 therethrough without affecting the operation of the adjustment knob 23. A tip spring 114 is provided at the rear end of the ablation needle, and the wire is connected to the ablation needle 40 through the tip spring 114.
The front ends of the two ablation needles 40 are laterally offset with respect to the rear ends thereof, specifically, the ablation needle 40 includes a first straight section 41, a second straight section 42 and an offset transition section 43, the first straight section 41 and the second straight section 42 are along the longitudinal direction of the ablation needle 40, the offset transition section 43 is located between the first straight section 41 and the second straight section 42, and the front end of the offset transition section 43 is laterally offset with respect to the rear end thereof. And the positions of the first straight section 41, the second straight section 42 and the offset transition section 43 of each ablation needle 40 correspond. Accordingly, the outer insulation 453 also includes a first straight section 41, a second straight section 42, and an offset transition section 43.
When the two ablation needles 40 are controlled to rotate by the adjusting knob 23, the distance between the second straight sections 42 at the front ends of the two ablation needles 40 can be changed, so as to control the opening and closing of the two ablation needles 40, please compare fig. 3 and 4, the size of the electric field pulse ablation device when being inserted into a human body can be reduced by the structure, which is very beneficial to the minimally invasive effect during the ablation operation, and after being inserted into the human body, the ablation distance of the two ablation needles 40 can be controlled by the operation at the rear end, so as to control the ablation area and the ablation electric field, based on the structure, the electric field pulse ablation device of the present embodiment can adopt the following two electric field pulse ablation methods:
a method of electric field pulse ablation, the method comprising the steps of:
simultaneously advancing two parallel ablation needles 40 to the area to be ablated;
electrifying the body of the ablation needle 40;
an ablation electric field region is formed between the two ablation needles 40, and ablation treatment is performed on tissue to be ablated through the electric field ablation region.
A method of electric field pulse ablation, the method comprising the steps of:
advancing two parallel ablation needles 40 to the area to be ablated;
adjusting the distance between the two ablation needles 40 by rotating the two ablation needles 40;
electrifying the body of the ablation needle 40;
an ablation electric field region is formed between the two ablation needles 40, and ablation treatment is performed on tissue to be ablated through the electric field ablation region.
The electric field pulse ablation device has the following advantages:
1. the electric field pulse ablation device comprises two ablation needles 40, wherein the two ablation needles 40 are arranged on the seat body 10, and when the electric field pulse ablation device is inserted, the two ablation needles 40 can be inserted into an area to be ablated through the seat body 10 at one time; because the two ablation needles 40 are arranged on the base 10 in parallel, when the ablation device is inserted, the distance and the angle between the ablation needles 40 can be effectively ensured, and the ablation effect is improved.
2. The two ablation needles 40 are arranged on the seat body 10, so that the two ablation needles 40 can be conveniently sent into an area to be ablated during an ablation operation, a large wound does not need to be cut open on a human body, a minimally invasive operation can be better realized, and postoperative recovery of a patient is facilitated.
3. The distance between the two ablation needles 40 of the electric field pulse ablation device can be conveniently adjusted, the rear end of the electric field pulse ablation device can be operated without taking the electric field pulse ablation device out of a human body, secondary injury to a patient is reduced, and the distance between the two ablation needles 40 can be conveniently adjusted.
4. The holder body 10 comprises a main holder 11 and an outer catheter 13 positioned in front of the main holder 11, the outer catheter 13 is sleeved on the ablation needle 40, so that when the ablation needle 40 is inserted, the ablation needle 40 can be prevented from injuring surrounding tissues, and the safety is higher.
It is to be understood that the number of the ablation needles 40 is not limited to two in the present embodiment.
Example two
As shown in fig. 12 to 19, in the present embodiment, the housing 10 further includes an adjusting sleeve 15 and a lower nut 153 at the front end, the adjusting sleeve 15 is provided with a pin hole 154 at the rear end, a clamping ring 1121 is disposed on the front seat 112, and after the fixing pin passes through the pin hole 154 and the clamping ring 1121, the front seat 112 is connected with the adjusting sleeve 15, the lower nut 153 is arranged at the front end position of the adjusting sleeve 15, the rear end of the outer conduit 13 is provided with the adjusting nut 132, the inner wall of the adjusting sleeve 15 is provided with an internal thread 151, the outer wall of the adjusting nut 132 is provided with an external thread 152, the outer guide tube 13 passes through a middle hole 1531 of the lower nut 153, the adjusting nut 132 at the rear end thereof is engaged with the adjusting sleeve 15 through the internal thread 151 and the external thread 152, so that the outer guide pipe 13 is rotated relative to the adjusting sleeve 15, the exposed length of the outer catheter 13 can be adjusted, so as to adjust the length of the ablation needle 40 exposed out of the outer catheter 13. The electric field pulse ablation device of the embodiment can adopt the following electric field pulse ablation method:
a method of electric field pulse ablation, the method comprising the steps of:
after passing through the puncture cannula of the endoscope;
advancing two parallel ablation needles 40 to the area to be ablated;
adjusting the longitudinal position of the outer catheter 13 in front of the main seat 11 relative to the two ablation needles 40, and further adjusting the exposed length of the front ends of the two ablation needles 40 relative to the outer catheter 13;
inserting the ablation probe with the adjusted needle spacing into the tissue to be ablated;
performing electrical ablation on the body of the ablation needle 40;
an ablation electric field region is formed between the two ablation needles 40, and ablation treatment is performed on tissue to be ablated through the electric field ablation region.
The electric field pulse ablation device can be connected with a puncture cannula of a laparoscope, and is conveniently used in laparoscopic surgery.
EXAMPLE III
In the present embodiment, as shown in fig. 20 and 21, the ablation needle 40 has a conductive material and a conductive layer formed on the outer surface of the needle body, and an insulating film layer 44 is disposed on the outer surface of the needle body, and the insulating film layer 44 separates the conductive layer into at least two conductive segments. The electric field pulse ablation device of the embodiment can adopt the following electric field pulse ablation method:
an electric field pulse ablation method, comprising the steps of:
inserting the ablation needle 40 into the tissue to be ablated;
energizing a needle body of the ablation needle 40;
the needle body forms at least two ablation electric field areas in the tissue to be ablated through at least two conductive sections of the needle body, and the tissue to be ablated is subjected to ablation treatment through the at least two electric field ablation areas.
The insulation film layer 44 is arranged on the body of the ablation needle 40 of the electric field pulse ablation device, the insulation film layer 44 divides the conductive layer into at least two conductive sections, and the generation of overcurrent and thermal effect can be avoided under the condition that an ablation area is large.
Example four
As shown in fig. 22 and 23, in the present embodiment, the ablation needle 40 is hollow to form a temperature adjusting channel 45, the temperature of the ablation needle 40 (and surrounding tissues) can be reduced by a cooling medium (such as a gaseous cooling medium), the temperature of the ablation needle 40 (and surrounding tissues) can be increased by other media, and a temperature control element (such as a heating wire 451) can be disposed in the temperature adjusting channel 45 to increase the temperature of the ablation needle 40 (and surrounding tissues). In this embodiment, an inner insulating tube 452 is provided in the temperature adjusting passage 45, and a heating wire 451 is provided in the inner insulating tube 452, so that heating ablation or the like can be performed. A temperature sensing element may also be disposed within the channel for sensing the temperature of the ablation needle 40 (and surrounding tissue). Or an air-cooled tube is provided in the temperature adjustment passage 45 for air-cooled ablation.
EXAMPLE five
As shown in fig. 24 to 27, in the present embodiment, three ablation needles 40 are provided, and the three ablation needles 40 are uniformly distributed on the holder body 10 in the circumferential direction, compared to the second embodiment, the main difference of the present embodiment is that the number of the ablation needles 40 is different, and it can be understood that, according to the requirement, the number of the ablation needles 40 can also be four or more. The principle is the same as the first embodiment, and is not described herein again.
EXAMPLE six
As shown in fig. 28, compared with the fifth embodiment, the present embodiment has an insulating film layer 44 on the outer surface of the pin body, and the insulating film layer 44 separates the conductive layer into at least two conductive segments. The differences are as in the third embodiment, and are not described herein again.
EXAMPLE seven
As shown in fig. 29 and 30, in the present embodiment, compared with the fifth embodiment, an inner insulating tube 452 is provided in the temperature adjusting passage 45, and a heating wire 451 is provided in the inner insulating tube 452, so as to perform operations such as heat ablation. A temperature sensing element may also be disposed within the channel for sensing the temperature of the ablation needle 40 (and surrounding tissue). Or an air-cooling pipe is arranged in the temperature adjusting channel 45 for air-cooling ablation. The differences are described in the fourth embodiment, and are not described herein again.
Example eight
As shown in fig. 31 to 33, in the present embodiment, an ablation needle 40 is further disposed between the ablation needles 40 on the side portion, and the ablation needle 40 is in a straight rod shape and is located at a radial center position of the holder body 10. That is, the ablation needle 40 located at the central position is in a straight rod shape, the three ablation needles 40 located at the circumferential outer side are in a bent shape, and when the adjustment is performed by the adjusting knob 23, the three ablation needles 40 at the circumferential outer side can be opened or closed, and the ablation needle 40 at the middle part does not rotate or move.
The above embodiments are provided to illustrate, reproduce and deduce the technical solutions of the present invention, and to fully describe the technical solutions, the objects and the effects of the present invention, so as to make the public more thoroughly and comprehensively understand the disclosure of the present invention, and not to limit the protection scope of the present invention.
The above examples are not intended to be exhaustive of the utility model and there may be many other embodiments not listed. Any alterations and modifications without departing from the spirit of the utility model are within the scope of the utility model.
Claims (12)
1. The electric field pulse ablation device is characterized by comprising a seat body, wherein at least two ablation needles are arranged on the seat body and arranged in parallel, each ablation needle is made of a conductive material, the front end of each ablation needle is an insertion end, the rear end of each ablation needle is a guide connection end, and the inside of each ablation needle is hollow to form a temperature regulation channel.
2. The electric field pulse ablation device of claim 1 wherein an air-cooled tube is disposed within said temperature-regulating passageway.
3. The electric field pulse ablation device of claim 1 wherein a heating element is disposed within said temperature-regulating passageway.
4. The electric field pulse ablation device of claim 2, wherein a heating element is disposed within the gas-cooled tube.
5. The electric field pulse ablation device of claim 1 wherein a temperature sensing element is disposed within said temperature-regulating passageway.
6. The electric field pulse ablation device according to any one of claims 1 to 5, wherein the holder body is provided with a mounting hole; at least one of the ablation needles is movably arranged in the mounting hole and is connected with the rotating mechanism at the position close to the rear end, and the front end of the ablation needle is deviated to the side part relative to the rear end.
7. The electric field pulse ablation device of claim 6, wherein the ablation needle comprises a first straight section, a second straight section and an offset transition section, the first straight section and the second straight section are along the longitudinal direction of the ablation needle, the offset transition section is located between the first straight section and the second straight section, and the front end of the offset transition section is offset to the side relative to the rear end of the offset transition section.
8. The electric field impulse ablation device of claim 6, wherein at least two of said ablation needles are movably disposed in said mounting hole at a forward position and are connected to said rotation mechanism at a rearward position.
9. The device of claim 5, wherein the holder comprises a main holder and an outer insulating layer disposed in front of the main holder, the outer insulating layer is disposed over the ablation needle, and a longitudinal adjustment device is disposed between the main holder and the outer insulating layer.
10. The electric field impulse ablation device of claim 9, wherein an adjustment sleeve is disposed between said main holder and said outer insulating layer, an adjustment nut is disposed on said outer insulating layer, a mating adjustment thread is disposed between said adjustment sleeve and said adjustment nut, and said longitudinal adjustment means comprises an adjustment sleeve and an adjustment nut.
11. The electric field impulse ablation device according to any one of claims 1 to 5, wherein the body of said ablation needle is made of an electrically conductive material and an electrically conductive layer is formed on the outer surface of the body, and an insulating film layer is provided on the outer surface of the body and divides said electrically conductive layer into at least two electrically conductive segments.
12. The electric field impulse ablation device of any one of claims 1 through 5, wherein an outer insulation layer is provided outside each of said ablation needles, said outer insulation layer surrounding each of said ablation needles.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110558428 | 2021-05-21 | ||
| CN2021105584288 | 2021-05-21 |
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| CN202121545507.7U Active CN216628691U (en) | 2021-05-21 | 2021-07-07 | Electric field pulse ablation device |
| CN202121623051.1U Active CN216628692U (en) | 2021-05-21 | 2021-07-16 | Electric field pulse ablation device |
| CN202220736651.7U Active CN218009799U (en) | 2021-05-21 | 2022-03-30 | Biopsy device and biopsy ablation device |
| CN202220832751.XU Active CN217611354U (en) | 2021-05-21 | 2022-04-11 | Ablation device and sampling biopsy ablation device |
| CN202220895625.9U Active CN217853069U (en) | 2021-05-21 | 2022-04-18 | Biopsy ablation device |
| CN202220958585.8U Active CN218009939U (en) | 2021-05-21 | 2022-04-24 | Electric field pulse ablation device, electric field pulse ablation system and electric field pulse ablation needle |
| CN202221061279.0U Active CN218009937U (en) | 2021-05-21 | 2022-05-05 | Tissue ablation device and tissue biopsy ablation device |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121623051.1U Active CN216628692U (en) | 2021-05-21 | 2021-07-16 | Electric field pulse ablation device |
| CN202220736651.7U Active CN218009799U (en) | 2021-05-21 | 2022-03-30 | Biopsy device and biopsy ablation device |
| CN202220832751.XU Active CN217611354U (en) | 2021-05-21 | 2022-04-11 | Ablation device and sampling biopsy ablation device |
| CN202220895625.9U Active CN217853069U (en) | 2021-05-21 | 2022-04-18 | Biopsy ablation device |
| CN202220958585.8U Active CN218009939U (en) | 2021-05-21 | 2022-04-24 | Electric field pulse ablation device, electric field pulse ablation system and electric field pulse ablation needle |
| CN202221061279.0U Active CN218009937U (en) | 2021-05-21 | 2022-05-05 | Tissue ablation device and tissue biopsy ablation device |
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| CN116138870B (en) * | 2023-02-28 | 2024-07-05 | 上海澍能医疗科技有限公司 | Biopsy and ablation device, biopsy and ablation system |
| CN117918946A (en) * | 2024-02-23 | 2024-04-26 | 绵阳立德电子股份有限公司 | Conformal radio frequency ablation electrode |
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2021
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| Publication number | Publication date |
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| CN217853069U (en) | 2022-11-22 |
| CN217611354U (en) | 2022-10-21 |
| CN218009937U (en) | 2022-12-13 |
| CN218009799U (en) | 2022-12-13 |
| CN218009939U (en) | 2022-12-13 |
| CN216628692U (en) | 2022-05-31 |
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