CN219579014U - Sectional type ablation needle - Google Patents
Sectional type ablation needle Download PDFInfo
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- CN219579014U CN219579014U CN202222614901.2U CN202222614901U CN219579014U CN 219579014 U CN219579014 U CN 219579014U CN 202222614901 U CN202222614901 U CN 202222614901U CN 219579014 U CN219579014 U CN 219579014U
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- needle
- needle bar
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- head
- ablation
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Abstract
The utility model relates to an ablation needle, which comprises a needle rod and a needle head, wherein the needle head comprises a pointed end and a blunt end, the needle rod is fixedly connected with the blunt end, and the needle head is made of a heat conducting material and is characterized in that: the needle bar comprises a first needle bar and a second needle bar, the first needle bar and the second needle bar are through pipes, and the first needle bar and the second needle bar are fixedly connected; the first needle bar and the second needle bar are made of different materials, and the materials of the needle head and the first needle bar can resist electrochemical corrosion; the utility model comprises the manufacturing method of the ablation needle: processing platinum iridium alloy into a needle head with a puncture tip, wherein a pointed head and a blunt head are respectively formed at two ends of the needle head; machining the outer surface of the blunt tip into a configuration having an annular groove; overlapping and welding the first needle bar and the annular groove to enable the blunt end of the needle head to be flush with the surface of the first needle bar; welding the first needle bar and the second needle bar to form smooth transition on the outer surfaces of the first needle bar and the second needle bar; the electrochemical corrosion is not generated in the process of electric ablation, and the three-section structure is adopted, so that the processing is convenient.
Description
Technical Field
The utility model belongs to the field of medical appliances, and particularly relates to a sectional type ablation needle.
Background
Tumor ablation is widely used as a method for treating tumors by modern medical treatment, and in the treatment process, essential treatment equipment comprises an ablation needle; in a broad sense, the ablation needles are mainly divided into a thermal ablation needle, a cryoablation needle and an electric ablation needle, and the ablation needles combined by a plurality of ablation modes also have specific application; the most commonly used material of the ablation needle is stainless steel, but when the ablation is performed, the stainless steel material can generate electric corrosion so as to generate electrochemical products harmful to human bodies, so that the position of the electric ablation needle where the electrochemical ablation occurs is selected from materials which do not generate electric corrosion, and platinum or platinum alloy is often used as a substitute material of the stainless steel in the prior art.
In electrochemical treatment of cancer, authors: xin Yoling, xu Bangning, first page 9: the electrode needle is made of platinum capable of preventing electrolysis, and is made into hard needle and elastic soft needle according to clinical requirement, its diameter is about 0.5-0.7 mm, and its length is 10-15-20 cm, and every electrode needle is covered with correspondent plastic tube so as to implement the functions of insulating and protecting health tissue.
In the clinical effects of electrochemical treatment on middle and late stage lung cancer, the treatment methods are described in the middle and solar friendly hospitals Xin Yoling, ge Bingsheng, liu Dere, guo Yongqing, dan Bin and Li Jinghong: the ZAY-6B type electrochemical therapeutic apparatus and BK92 type electrochemical therapeutic apparatus developed in China and a platinum electrode needle with the diameter of 0.7x165mm are applied;
in the book of electrochemical treatment tumor foundation and clinic, the authors: li Kaihua, song Xiuqi, tang Bujian, chapter 4, pages 47, 48: and (II) the electrode material for treatment adopts platinum-based alloy, and platinum iridium 18 and platinum iridium 20 are suitable, so that the electrode material is hard, has certain penetrating power and large surface area, and can be used in quite important organs.
In summary, the existing ablation needle is made of the whole platinum or platinum alloy material, but the cost is always in a higher position in industrial production due to the high price of platinum or platinum alloy, and the production cost is high.
Disclosure of Invention
The utility model discloses a sectional type ablation needle, which aims to solve the problem that the cost of the existing whole platinum or platinum alloy electric ablation needle is too high.
In order to solve the problems, the utility model provides a segmented ablation needle, which comprises a needle rod and a needle head, wherein the needle head comprises a pointed end and a blunt end, the needle rod is fixedly connected with the blunt end of the needle head, the needle head is made of a heat-conducting material, the needle rod comprises a first needle rod and a second needle rod, the first needle rod and the second needle rod are through pipes, and the first needle rod and the second needle rod are fixedly connected; the first needle bar and the second needle bar are made of different materials, and the materials of the needle head and the first needle bar are not corroded electrochemically after electrolysis.
Further, the first needle bar conducts heat.
Further, the needle and/or the first needle bar are made of platinum or platinum alloy materials.
Further, the needle head and the first needle bar are of an integral structure.
Further, the diameters of the first needle bar and the second needle bar are different, and the surfaces of the first needle bar and the second needle bar form smooth transition.
Further, the blunt end of the needle head is provided with an annular groove, and the first needle rod is lapped on the annular groove to enable the surface to be flush.
Further, the second needle bar is fixedly connected with the needle head, a connecting groove is formed at the connecting position, and the first needle bar is fixed in the connecting groove.
Further, at least one insulating ring is arranged on the ablation needle, the insulating ring is fixed between the needle head and the first needle bar and/or between the first needle bar and the second needle bar, and at least part of the surface of the second needle bar of the ablation needle is provided with an electric insulating layer.
The utility model has the following advantages: (1) The needle head and the first needle rod are made of materials which do not generate electrochemical corrosion, so that the electrochemical ablation is safe and does not cause the electrochemical corrosion injury to the human body;
(2) The sectional structure is convenient to process, the yield is high, the use amount of platinum or platinum alloy is reduced, and the production cost is reduced.
Drawings
FIG. 1 is a schematic perspective view of a sequential ablation needle of the utility model
FIG. 2 is a schematic cross-sectional view of a sequential ablation needle of the utility model
FIG. 3 is a schematic cross-sectional view of a sequential ablation needle with an insulation layer in accordance with the present utility model
FIG. 4 is a schematic cross-sectional view of an insulating ring ablation needle of the utility model
FIG. 5 is a schematic perspective view of a sleeved ablation needle of the utility model
FIG. 6 is a schematic cross-sectional view of a sleeved ablation needle of the utility model
FIG. 7 is a schematic perspective view of a needle of the present utility model
In the figure: 1-sequential ablation needle, 101-needle, 1011-tip, 1012-annular groove, 1013-needle socket, 102-first needle bar, 1021-insulating ring, 103-second needle bar, 1031-first insulating layer, 1032-second insulating layer, 2-insulating ring ablation needle, 201-sleeved needle bar, 202-lapped needle bar, 3-sleeved ablation needle
Detailed Description
The utility model is composed of three-section structure, including needle head, first needle bar and second needle bar, wherein the focus is on the first needle bar, the material of the first needle bar is the heat conduction material which does not produce electrochemical corrosion, for example: platinum or a platinum alloy. In the selection of the needle, the preferred material is also a thermally conductive material that does not cause galvanic corrosion, and in use, the needle cooperates with the first shaft to act on the target area. The needle head is divided into a pointed head and a blunt head, wherein the pointed head is preferably a triangular pointed head, which is beneficial to complete puncture under the condition of small diameter.
The surface of the ablation needle is provided with an insulating layer in the use process, the main insulating types of the insulating layer comprise thermal insulation and/or electric insulation, the insulating layer is mainly arranged on the outer surface of the second needle bar, but a part of the outer surface of the first needle bar can be provided with a corresponding insulating layer, the insulating layer can be in a spraying and coating mode or a sleeving mode through a thin sleeve, the optimal mode is to avoid uneven surface of the ablation needle, and the method can be realized by adjusting the diameter difference between the first needle bar and the second needle bar; the first needle bar can also be heat-conducting, and the implementation structure for combining electric and cold ablation is generally determined by the length of the first needle bar and the cryoablation effect which is expected by adopting the utility model.
The first needle bar and the second needle bar can be of the same diameter or different diameters, and the following embodiments are shown in the form of the same diameter, but the utility model does not mean that the following embodiments can only use two needle bars of the same diameter; for example, the first needle shaft may be of a smaller diameter, which may be less harmful to the human body when the penetration procedure is performed into the target area, while the second needle shaft may be of a larger diameter, which may provide more and more complex functional structures, such as larger heat exchange areas, more electrode wires, etc., within the needle shaft.
In the utility model, the needle head is fixedly connected with the first needle bar, the preferred fixing mode is welding, and the welding mode adopted by the utility model can possibly cause the conditions of insufficient strength and cutter leakage and cutter breakage in the using process, so that lap welding is the preferred welding mode used by the utility model, and the welding mode of lap welding can be replaced by the welding mode of the lap welding of the part (between the first needle bar and the second needle bar) displayed by butt welding in the attached drawing. With reference to fig. 7, a needle portion of the present utility model is shown in fig. 7, wherein the outer surface of the blunt tip includes an annular groove, i.e., a lap groove, for lap welding.
A preferred needle should also have a needle recess 1013 as shown in fig. 7, which allows the heat transfer capability of the needle to be enhanced while minimizing the loss of overall strength of the needle recess 1013.
The utility model has two processing methods, the first one: comprises a needle head, a first needle bar and a second needle bar which are welded and fixed in sequence; processing platinum iridium alloy into a needle head with a puncture tip, wherein a pointed head and a blunt head are respectively formed at two ends of the needle head; machining the outer surface of the blunt tip into a configuration having an annular groove; overlapping and welding the first needle bar and the annular groove to enable the blunt end of the needle head to be flush with the surface of the first needle bar; and welding the first needle bar and the second needle bar to form smooth transition between the outer surfaces of the first needle bar and the second needle bar.
Second kind: comprises a needle head, a first needle bar and a second needle bar; processing platinum iridium alloy into a needle head with a puncture tip, wherein a pointed head and a blunt head are respectively formed at two ends of the needle head; machining the outer surface of the blunt tip into a configuration having an annular groove; machining the outer surface of the second needle bar into a structure with an annular groove; one end of the first needle bar is sleeved on the annular groove of the second needle bar, and the other end of the first needle bar is sleeved on the annular groove of the blunt tip and fixed by welding, so that the outer surfaces of the blunt tip, the first needle bar and the second needle bar form smooth transition.
The utility model is explained in detail below by way of examples:
example 1: referring to fig. 1 and 2, fig. 1 is a schematic perspective view of a sequential ablation needle 1 according to the present utility model, and fig. 2 is a schematic cross-sectional view of a sequential ablation needle according to the present utility model, which includes a needle 101, a first needle shaft 102 and a second needle shaft 103, wherein the needle 101 and the first needle shaft 102 are preferably made of a thermally conductive material that does not cause galvanic corrosion, such as: platinum and/or platinum alloys; because the first needle bar 102 does not need to be pierced, a softer material, such as carbon fiber, can be selected, and the alternative materials with the above characteristics can be applied to the present utility model; the first insulation layer 1031 shown in fig. 2 may be an electrically insulating layer (in the form of a sleeve or coating) or an insulating layer as needed to control the extent of electrical and/or cryoablation; in this embodiment, the needle 101 and the first needle shaft 102 are both conductive structures, so that after the electrical leads are connected, the needle can be used for electrochemical treatment, electric heating and/or electrochemical information acquisition (temperature or impedance); referring to fig. 3, a second insulating layer 1032 is shown in fig. 3 as being disposed at the proximal end of the sequential ablation needle 1, and when both the first insulating layer 1031 and the second insulating layer 1032 are electrically insulating layers, energizing the sequential ablation needle 1 can cause the sequential ablation needle 1 to form a multi-electrode structure; the needle head comprises a tip 1011 and a blunt tip, the tip 1011 can be a conical tip, or can be any replaceable sharp tip such as a triangular tip, the blunt tip is sequentially connected with the first needle bar and the second needle bar in series for fixation, the serial connection mode is preferably welding fixation, particularly preferred welding is performed by lap welding, particularly referring to fig. 7, fig. 7 is a perspective view of the needle head 101, an annular groove 1012 is arranged on the surface of the blunt tip, the blunt tip is welded and fixed with one end of the first needle bar 102 by the annular groove 1012, the first needle bar 102 is welded and fixed with one end of the second needle bar 103, and the two parts can be welded and fixed by butt welding, lap welding or other common welding modes. Needle recess 1013 is also shown to provide better heat transfer, but this construction is not required.
The first needle bar 102 and the second needle bar 103 are hollow bars, fluid can be introduced into the hollow bars, and specifically, low-temperature fluid or high-temperature fluid can be used for cryoablation, thermal ablation or target zone rewarming, and one common structure is that a fluid throttle tube (refrigeration by using the joule thomson principle) is arranged in the first needle bar 102 and the second needle bar 103 for cryoablation, and the form is used as a common means in the prior art, and can be applied to the present embodiment and the subsequent embodiments in the same way, and is not repeated in the present utility model.
In this embodiment, the electrical connection structure for electrical ablation may refer to the electrode wire in the drawings, or may adopt a direct connection from outside, etc., and the existing disclosed electrical connection method should be incorporated into the present utility model, which will not be described in detail in the following embodiments.
Example 2: referring to fig. 4, fig. 4 is a schematic cross-sectional view of an insulating ring ablation needle 2 of the present utility model, which is different from the sequential ablation needle 1 in that at least one insulating ring 1021 is provided between a needle head 101, a first needle bar 102 and a second needle bar 103, and in the state of two insulating rings 1021 is shown in fig. 4, so that the needle head 101, the first needle bar 102 and the second needle bar are electrically insulated from each other, and when the needle head 101 and the first needle bar 102 are respectively connected by the same or different electric wires, the needle head 101 and the first needle bar 102 can synchronously or asynchronously output electric energy with the same or opposite polarity, and can also output pulse energy with different frequencies; the second pin 103 may be made of an electrically insulating material or may be provided with an electrically insulating layer on the surface in the same manner as the first insulating layer 1031 in embodiment 1, not necessarily according to the structure shown in the schematic diagram.
Example 3: referring to fig. 5 and 6, fig. 5 is a perspective view of the bell-type ablation needle 3 of the present utility model, and fig. 6 is a cross-sectional view of the bell-type ablation needle 3 of the present utility model, unlike embodiment 1, comprising a bell-type needle bar 201 and a lap-type needle bar 202 instead of the first needle bar 102 and the second needle bar 103, one end of the lap-type needle bar 202 is provided with an annular notch, and the bell-type needle bar 201 is bell-fixed in the annular notch of the lap-type needle bar 202 so that the surfaces are flush; the needle 101 is fixedly connected with the overlapping needle bar 202, preferably by lap welding, and the main advantage of the structure is that when the sleeved needle bar 201 is made of the same material as the first needle bar 102, the material is possibly damaged due to small strength, and the overall strength of the embodiment is enhanced by making the overlapping needle bar 202 made of a material with rigidity higher than that of the sleeved needle bar 201.
Claims (8)
1. A segmented ablation needle comprising a needle shaft and a needle head, characterized in that: the needle head comprises a pointed end and a blunt end, the needle rod is fixedly connected with the blunt end of the needle head, the needle head is made of a heat conduction material and comprises a first needle rod and a second needle rod, the first needle rod and the second needle rod are through pipes, and the first needle rod and the second needle rod are fixedly connected; the first needle bar and the second needle bar are made of different materials, and the materials of the needle head and the first needle bar are not corroded electrochemically after electrolysis.
2. The segmented ablation needle of claim 1, wherein: the first needle bar conducts heat.
3. The segmented ablation needle of claim 1, wherein: the needle and/or the first needle bar are made of platinum or platinum alloy materials.
4. The segmented ablation needle of claim 1, wherein: the needle head and the first needle bar are of an integrated structure.
5. The segmented ablation needle of claim 1, wherein: the diameters of the first needle bar and the second needle bar are different, and the surfaces of the first needle bar and the second needle bar form smooth transition.
6. The segmented ablation needle of claim 1, wherein: the blunt end of the needle head is provided with an annular groove, and the first needle bar is lapped on the annular groove to enable the surface to be flush.
7. The segmented ablation needle of claim 1, wherein: the second needle bar is fixedly connected with the needle head, a connecting groove is formed at the connecting position, and the first needle bar is fixed in the connecting groove.
8. The segmented ablation needle of any of claims 1-7, wherein: the ablation needle is provided with at least one insulation ring, the insulation ring is fixed between the needle head and the first needle bar and/or between the first needle bar and the second needle bar, and at least part of the surface of the second needle bar is provided with an electric insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222614901.2U CN219579014U (en) | 2022-09-30 | 2022-09-30 | Sectional type ablation needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222614901.2U CN219579014U (en) | 2022-09-30 | 2022-09-30 | Sectional type ablation needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219579014U true CN219579014U (en) | 2023-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222614901.2U Active CN219579014U (en) | 2022-09-30 | 2022-09-30 | Sectional type ablation needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219579014U (en) |
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2022
- 2022-09-30 CN CN202222614901.2U patent/CN219579014U/en active Active
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