CN102652691A - Microwave ablation needle and method for accurately positioning puncture depth of microwave ablation needle - Google Patents
Microwave ablation needle and method for accurately positioning puncture depth of microwave ablation needle Download PDFInfo
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- CN102652691A CN102652691A CN2012100844913A CN201210084491A CN102652691A CN 102652691 A CN102652691 A CN 102652691A CN 2012100844913 A CN2012100844913 A CN 2012100844913A CN 201210084491 A CN201210084491 A CN 201210084491A CN 102652691 A CN102652691 A CN 102652691A
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- ablation needle
- microwave ablation
- positioning ring
- microwave
- needle
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- 238000002679 ablation Methods 0.000 title claims abstract description 113
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000012212 insulator Substances 0.000 claims abstract description 4
- 230000003902 lesion Effects 0.000 claims abstract description 3
- 239000000853 adhesive Substances 0.000 claims description 8
- 230000001070 adhesive effect Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 4
- 230000035515 penetration Effects 0.000 claims description 4
- 238000002591 computed tomography Methods 0.000 claims description 3
- 238000002604 ultrasonography Methods 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims 2
- 230000008018 melting Effects 0.000 claims 2
- 239000000155 melt Substances 0.000 claims 1
- -1 polytetrafluoroethylene Polymers 0.000 abstract 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract 1
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract 1
- 206010028980 Neoplasm Diseases 0.000 description 6
- 238000010317 ablation therapy Methods 0.000 description 3
- 238000002560 therapeutic procedure Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002059 diagnostic imaging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The invention provides a microwave ablation needle and a method for accurately positioning the puncture depth of the microwave ablation needle. The microwave ablation needle comprises an ablation needle head, an ablation needle tube and a handle, wherein a polytetrafluoroethylene insulator is arranged between the ablation needle head and one end of the ablation needle tube, the other end of the ablation needle tube is connected with the head part of the handle, and the outside surface of the ablation needle tube is provided with scale lines; in addition, the microwave ablation needle also comprises a positioning ring, the positioning ring is attached to the ablation needle tube, and the position of the positioning ring, on the ablation needle tube, can be adjusted. The method comprises the following steps: determining the position of a lesion away from a body surface skin; calculating the required puncture depth of the microwave ablation needle; selecting a microwave ablation needle with an appropriate length; moving the positioning ring to a corresponding position of the scale lines on the ablation needle tube; and carrying out puncturing by using the microwave ablation needle until the positioning ring touches the body surface skin. By using the microwave ablation needle and the method disclosed by the invention, the actual puncture depth of the ablation needle head can be accurately positioned, thereby preventing the occurrence of wrong puncture.
Description
Technical Field
The invention relates to a microwave ablation needle, in particular to a microwave ablation needle capable of being accurately positioned.
Background
With the development of medical imaging technology, under the guidance of images, the microwave ablation therapy of tumors is a new method for tumor therapy, which is to insert a microwave therapy needle into the tumor tissue of a human body under the guidance of B-ultrasonic images or CT images to perform thermal ablation therapy on the tumors. The microwave ablation therapy is a high-efficiency, rapid and uniform heating method for tumor tissues, thorough thermal coagulation, convenient use and safety, and has been widely applied to clinic for many years.
Currently, a needle rod scale mark indication mode is mainly adopted in the market for a microwave ablation needle positioning method for indicating the puncture depth of the microwave ablation needle during an operation. However, this approach has the following drawbacks: 1. the scale mark has no obvious indication and can not be seen at a glance, and the time for positioning the puncture depth of the microwave ablation needle is increased; 2. doctors need to puncture while counting the scale lines on the needle rod, so that mistakes are easy to make; 3. during operation, the microwave ablation needle can deflect and slide down due to the turning of a patient or the body movement required in the operation.
In view of this, how to design a microwave ablation needle, which can accurately position the puncture depth of the microwave ablation needle and prevent the microwave ablation needle from deflecting and sliding down, is a problem that those in the industry need to solve urgently.
Disclosure of Invention
Aiming at the defects that the microwave ablation needle is inconvenient to accurately position the puncture depth and errors are easy to cause in the prior art, the invention provides the microwave ablation needle and the method for accurately positioning the puncture depth thereof.
According to one aspect of the present invention, there is provided a microwave ablation needle, including an ablation needle head, an ablation needle tube and a handle, wherein a tetrafluoro insulator is disposed between the ablation needle head and one end of the ablation needle tube, and the other end of the ablation needle tube is connected to a head of the handle, wherein scale marks are disposed on an outer surface of the ablation needle tube, and the microwave ablation needle includes:
the positioning ring is attached to the ablation needle tube, and the position of the positioning ring on the ablation needle tube can be adjusted.
Preferably, the positioning ring has an adhesive force with the ablation needle cannula.
Preferably, the positioning ring is made of a rubber material.
According to one aspect of the invention, a method for accurately positioning the puncture depth of a microwave ablation needle is provided, which is characterized by comprising the following steps:
determining the position of a focus from the body surface skin;
calculating the depth of the microwave ablation needle needing to be punctured;
selecting a microwave ablation needle with a proper length;
moving the positioning ring to the position corresponding to the scale mark on the ablation needle tube; and
and puncturing until the positioning ring touches the body surface skin.
Preferably, the location of the lesion from the body surface skin is determined by B-ultrasound or CT scanning.
Preferably, the depth of the ablation needle puncture is the distance between the positioning ring and the ablation needle tip.
The invention has the advantages that: the positioning ring is arranged on the microwave ablation needle tube and used for accurately positioning the puncture depth of the ablation needle, and the ablation needle tube can be fixed by utilizing the adhesive force of the positioning ring, so that the ablation needle tube is prevented from deflecting and sliding downwards.
Drawings
The various aspects of the present invention will become more apparent to the reader after reading the detailed description of the invention with reference to the attached drawings. Wherein,
FIG. 1 shows a schematic structural view of a microwave ablation needle in accordance with an aspect of the present invention.
FIG. 2 illustrates a flow chart of a method for accurately locating the penetration depth of a microwave ablation needle in accordance with another aspect of the present invention.
The specific implementation mode is as follows:
embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
FIG. 1 shows a schematic structural view of a microwave ablation needle in accordance with an aspect of the present invention. Referring to fig. 1, the microwave ablation needle includes an ablation needle head 10, an ablation needle tube 11, a handle 12 and a positioning ring 13. Wherein, the ablation needle tube 10 is connected with the ablation needle tube 11, a tetrafluoro insulator 14 is arranged between one end of the ablation needle tube 11 and the ablation needle tube 10, and the other end of the ablation needle tube 11 is connected with the head of the handle 12. The outer surface of the ablation needle tube 11 is provided with scale lines 15. The positioning ring 13 has a strong adhesive force with the ablation needle tube 11, the positioning ring 13 can be attached to the ablation needle tube 11, and the positioning ring 13 can be moved along the ablation needle tube 11 to a proper position for calibrating and limiting the depth of the ablation needle inserted into the body. The material of the positioning ring 13 may be a rubber material, but is not limited thereto. Because the positioning ring 13 has strong adhesion with the ablation needle tube 11, when the positioning ring 13 is moved to the corresponding position, the positioning ring can be attached to the ablation needle tube 11 and is not easy to slide off. Moreover, the strong adhesive force between the positioning ring 13 and the ablation needle tube 11 can fix the position of the ablation needle tube 11 during the operation, thereby preventing the ablation needle tube 11 from deflecting and sliding down.
FIG. 2 illustrates a flow chart of a method for accurately locating the penetration depth of a microwave ablation needle in accordance with another aspect of the present invention. Referring to fig. 2 in combination with fig. 1, the method for accurately positioning the puncture depth of the microwave ablation needle comprises the following steps:
step S1: and determining the position of the focus from the body surface skin. Firstly, the position of the focus from the body surface skin is scanned through the image. Specifically, the position of the focus from the body surface skin can be obtained after B-ultrasonic or CT scanning and positioning.
Step S2: and calculating the required puncture depth of the microwave ablation needle. And then, calculating the depth of the microwave ablation needle needing to be punctured according to the position of the focus obtained by image scanning and the body surface skin.
Step S3: and selecting a microwave ablation needle with a proper length. Next, an ablation needle having an appropriate length is selected according to the depth of penetration required by the microwave ablation needle.
Step S4: and moving the positioning ring to the position corresponding to the scale mark on the ablation needle tube. Then, according to the depth of the microwave ablation needle to be punctured, the positioning ring 13 is moved to the corresponding position on the scale mark 15, and because the positioning ring 13 and the ablation needle tube 11 have strong adhesive force, when the positioning ring 13 is moved to the corresponding position, the positioning ring can be attached to the ablation needle tube 11 and is not easy to slide off.
Step S5: puncture until the positioning ring touches the skin of the body surface. Finally, the microwave ablation needle is used for puncturing the position of the focus until the positioning ring 13 completely contacts the skin of the body surface, and the ablation needle head 10 completely reaches the target position inside the focus so as to achieve the ablation effect on the tumor. Due to the existence of the positioning ring 13, the actual puncture depth of the ablation needle is the distance between the positioning ring 13 and the ablation needle head 10, so that the ablation needle can be prevented from further puncturing, the puncture depth of the ablation needle can be better determined, and the damage to the interior of the body of a patient caused by over-puncturing of the ablation needle can be avoided. In addition, the strong adhesive force between the positioning ring 13 and the ablation needle tube 11 can fix the position of the ablation needle tube 11 during the operation, so as to prevent the ablation needle tube 11 from deflecting and sliding down.
The invention has the advantages that: the positioning ring is arranged on the microwave ablation needle tube and used for accurately positioning the puncture depth of the ablation needle, and the ablation needle tube can be fixed by utilizing the adhesive force of the positioning ring, so that the ablation needle tube is prevented from deflecting and sliding downwards.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a microwave ablation needle, is including melting the syringe needle, melting needle tubing and handle, melt the syringe needle with it is equipped with the tetrafluoro insulator to melt between the one end of needle tubing, the other end that melts the needle tubing connect in the head of handle, its characterized in that, it is provided with the scale mark on the surface of needle tubing to melt, microwave ablation needle includes:
the positioning ring is attached to the ablation needle tube, and the position of the positioning ring on the ablation needle tube can be adjusted.
2. A microwave ablation needle according to claim 1 wherein an adhesive force is provided between the retaining ring and the ablation needle tube.
3. A microwave ablation needle according to claim 1 wherein the retaining ring is made of a rubber material.
4. A method for accurately positioning the penetration depth of a microwave ablation needle as claimed in any one of claims 1 to 3, comprising the steps of:
determining the position of a focus from the body surface skin;
calculating the depth of the microwave ablation needle needing to be punctured;
selecting a microwave ablation needle with a proper length;
moving the positioning ring to the position corresponding to the scale mark on the ablation needle tube; and
and puncturing until the positioning ring touches the body surface skin.
5. The method of claim 4, wherein the location of the lesion from the body surface skin is determined by a B-mode ultrasound or CT scan.
6. The method of claim 4 or 5, wherein the ablation needle penetrates to a depth that is the distance between the positioning ring and the ablation needle tip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100844913A CN102652691A (en) | 2012-03-27 | 2012-03-27 | Microwave ablation needle and method for accurately positioning puncture depth of microwave ablation needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100844913A CN102652691A (en) | 2012-03-27 | 2012-03-27 | Microwave ablation needle and method for accurately positioning puncture depth of microwave ablation needle |
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| Publication Number | Publication Date |
|---|---|
| CN102652691A true CN102652691A (en) | 2012-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012100844913A Pending CN102652691A (en) | 2012-03-27 | 2012-03-27 | Microwave ablation needle and method for accurately positioning puncture depth of microwave ablation needle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115349949A (en) * | 2022-08-31 | 2022-11-18 | 深圳市人民医院 | Thyroid microwave thermal ablation needle with skin breaking function |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200998311Y (en) * | 2006-09-29 | 2008-01-02 | 南京康友微波能应用研究所 | Microwave melting needle |
| CN101156804A (en) * | 2006-12-14 | 2008-04-09 | 南京康友微波能应用研究所 | Temperature control microwave melt needle |
| CN101224137A (en) * | 2007-10-30 | 2008-07-23 | 南京康友微波能应用研究所 | Ablation needle for 915MHz energy-gathering microwave |
| CN101711705A (en) * | 2009-11-18 | 2010-05-26 | 南京康友微波能应用研究所 | Microwave ablation needle and microwave ablation therapeutic apparatus thereof |
| US20110118723A1 (en) * | 2009-11-17 | 2011-05-19 | Bsd Medical Corporation | Microwave coagulation applicator and system |
| EP2345454A1 (en) * | 2010-01-13 | 2011-07-20 | Vivant Medical, Inc. | Ablation device with user interface at device handle and system including same |
| US20110295245A1 (en) * | 2010-05-25 | 2011-12-01 | Vivant Medical, Inc. | Flow Rate Verification Monitor for Fluid-Cooled Microwave Ablation Probe |
-
2012
- 2012-03-27 CN CN2012100844913A patent/CN102652691A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200998311Y (en) * | 2006-09-29 | 2008-01-02 | 南京康友微波能应用研究所 | Microwave melting needle |
| CN101156804A (en) * | 2006-12-14 | 2008-04-09 | 南京康友微波能应用研究所 | Temperature control microwave melt needle |
| CN101224137A (en) * | 2007-10-30 | 2008-07-23 | 南京康友微波能应用研究所 | Ablation needle for 915MHz energy-gathering microwave |
| US20110118723A1 (en) * | 2009-11-17 | 2011-05-19 | Bsd Medical Corporation | Microwave coagulation applicator and system |
| CN101711705A (en) * | 2009-11-18 | 2010-05-26 | 南京康友微波能应用研究所 | Microwave ablation needle and microwave ablation therapeutic apparatus thereof |
| EP2345454A1 (en) * | 2010-01-13 | 2011-07-20 | Vivant Medical, Inc. | Ablation device with user interface at device handle and system including same |
| US20110295245A1 (en) * | 2010-05-25 | 2011-12-01 | Vivant Medical, Inc. | Flow Rate Verification Monitor for Fluid-Cooled Microwave Ablation Probe |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115349949A (en) * | 2022-08-31 | 2022-11-18 | 深圳市人民医院 | Thyroid microwave thermal ablation needle with skin breaking function |
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Application publication date: 20120905 |