CN118948418A - Tumor ablation needle with fixed-point temperature measurement function and use method thereof - Google Patents
Tumor ablation needle with fixed-point temperature measurement function and use method thereof Download PDFInfo
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- CN118948418A CN118948418A CN202411340268.XA CN202411340268A CN118948418A CN 118948418 A CN118948418 A CN 118948418A CN 202411340268 A CN202411340268 A CN 202411340268A CN 118948418 A CN118948418 A CN 118948418A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/02—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1402—Probes for open surgery
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00577—Ablation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
- A61B2018/00791—Temperature
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/02—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques
- A61B2018/0293—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques using an instrument interstitially inserted into the body, e.g. needle
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B2018/1405—Electrodes having a specific shape
- A61B2018/1425—Needle
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Abstract
The invention relates to a tumor ablation needle with a fixed-point temperature measurement function and a use method thereof, wherein the tumor ablation needle comprises an ablation needle body with a needle point; an ablation working area with a set length is arranged on the ablation needle body, and the head end of the ablation working area is set to be away from the tail end of the needle point; the ablation needle comprises an ablation needle body, and is characterized in that two groups of temperature sensor assemblies are arranged on the ablation needle body, the two groups of temperature sensor assemblies are respectively located on two sides of the ablation working area, each group of temperature sensor assemblies comprises a plurality of temperature sensors, and the plurality of temperature sensors are distributed at intervals along the length direction of the ablation needle body. The invention can monitor the temperature change around the working area of the ablation needle in real time so as to judge the ablation range.
Description
Technical Field
The invention relates to the technical field of medical appliances, in particular to a tumor ablation needle with a fixed-point temperature measurement function and a use method thereof.
Background
Ablation refers to the process of guiding by an imaging device, inserting a specially designed ablation needle into a tumor part, and necrosis of the tumor is caused by the operation of the ablation needle. Currently mainstream physical ablation techniques include thermal ablation techniques (e.g., radio frequency ablation techniques) and cold ablation techniques. Nowadays, ablation has been widely applied to various tumors (such as bone tumor, soft tissue tumor and solid organ tumor) and has good application effect, especially in malignant tumor.
However, how to control the range of tumor ablation is an important problem in the ablation treatment process, the purpose of tumor reduction is difficult to achieve due to the fact that the ablation range is too small, surrounding normal tissues are damaged due to the fact that the ablation range is too large, and how to monitor the ablation range in real time, ensure that the target area reaches the ablation temperature and simultaneously ensure that adjacent important tissue structures are not damaged is always a problem to be solved in the ablation process.
Disclosure of Invention
Aiming at the problems, the invention aims to provide a tumor ablation needle with a fixed-point temperature measurement function and a use method thereof, which can monitor the temperature change around the working area of the ablation needle in real time so as to judge the ablation range.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
The tumor ablation needle with the fixed-point temperature measurement function comprises an ablation needle body with a needle point; an ablation working area with a set length is arranged on the ablation needle body, and the head end of the ablation working area is set to be away from the tail end of the needle point;
the ablation needle comprises an ablation needle body, and is characterized in that two groups of temperature sensor assemblies are arranged on the ablation needle body, the two groups of temperature sensor assemblies are respectively located on two sides of the ablation working area, each group of temperature sensor assemblies comprises a plurality of temperature sensors, and the plurality of temperature sensors are distributed at intervals along the length direction of the ablation needle body.
The tumor ablation needle is preferably provided with a distance L between a plurality of temperature sensors in each group; the distance between the temperature sensor near the head end of the ablation working region and the head end of the ablation working region is L/2; and the distance from the temperature sensor near the tail end of the ablation working region to the tail end of the ablation working region is L/2.
The tumor ablation needle, preferably, the L is in the range of 5-15mm.
The tumor ablation needle is preferably provided with an ablation working area with a set length of A, wherein the range of A is 10-30mm.
The application method of the tumor ablation needle with the fixed-point temperature measurement function comprises the following steps:
The method comprises the steps that two groups of temperature sensor assemblies are respectively arranged on an ablation needle body at two sides of an ablation working area, each group of temperature sensor assemblies comprises a plurality of temperature sensors, the plurality of temperature sensors are sequentially distributed at intervals along the length direction of the ablation needle body, the distance between the plurality of temperature sensors of each group is L, the distance between the temperature sensor close to the head end of the ablation working area and the head end of the ablation working area is L/2, and the distance between the temperature sensor close to the tail end of the ablation working area and the tail end of the ablation working area is L/2;
numbering a plurality of temperature sensors from the needle point to the tail end of the ablation needle body;
placing the ablation working region within a target range;
and returning data through temperature sensors of different measuring points to obtain temperature data of a position at a specific distance from an ablation working area, and observing the temperature change condition of each measuring point to determine whether the ablation environment is reached.
In the usage method, preferably, the observation of the temperature change condition of each measuring point to determine whether the ablation environment is reached specifically includes the following steps:
Observing the temperature change conditions of two temperature sensors close to the head end and the tail end of the ablation working area, and determining whether the temperature of the ablation target is reached;
if the temperature of the temperature measuring point of the temperature sensor far away from the tail end of the ablation working area exceeds the set temperature range in the ablation process, stopping the ablation in time;
Temperature change in the target area and at the edge can be monitored through temperature measuring points of other temperature sensors so as to judge whether the ablation range meets the requirement.
In the use method, preferably, the temperature of the temperature measuring point of the temperature sensor far away from the tail end of the ablation working area exceeds the set temperature range of 10-45 ℃.
Due to the adoption of the technical scheme, the invention has the following advantages:
According to the invention, the temperature distribution data of different areas can be provided according to the measurement of the temperature of the site at a specific distance from the ablation working area, so that the description of the ablation range is realized; meanwhile, the temperature measuring points are positioned around the temperature sensitive tissue area to closely detect the temperature of the area, so that damage is avoided; in addition, the temperature measuring function is integrated in the ablation needle, so that the single needle multifunction can be realized.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Like parts are designated with like reference numerals throughout the drawings. In the drawings:
FIG. 1 is a schematic view of a tumor ablation needle with a fixed-point thermometry function according to the present invention;
Fig. 2is a schematic diagram of the ablation state of the present invention.
The reference numerals in the figures are as follows:
1-an ablation needle body; 2-ablating a working area; 3-temperature sensor.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The invention provides a tumor ablation needle with a fixed-point temperature measurement function, which is characterized in that a plurality of temperature sensors are arranged at different measuring points on an ablation needle body, and are divided into two groups and are respectively arranged at two sides of an ablation working area; therefore, temperature distribution data of different areas can be measured and provided, and the description of the melting range is realized.
As shown in fig. 1, the tumor ablation needle with the fixed-point temperature measurement function provided by the invention comprises an ablation needle body 1 with a needle point; an ablation working area 2 with a set length is arranged on the ablation needle body 1, and the head end of the ablation working area 2 is set to be away from the tail end of the needle point; the ablation needle body 1 is provided with two groups of temperature sensor assemblies, the two groups of temperature sensor assemblies are respectively located at two sides of the ablation working area 2, each group of temperature sensor assemblies comprises a plurality of temperature sensors 3, and the plurality of temperature sensors 3 are distributed at intervals along the length direction of the ablation needle body 1.
In the above-described embodiment, it is preferable that the distance between the several temperature sensors 3 of each group is L; the distance from the temperature sensor 3 near the head end of the ablation working region 2 to the head end 2 of the ablation working region is L/2; the temperature sensor 3 near the tail end of the ablation working region 2 is at a distance L/2 from the tail end of the ablation working region 2.
In the above embodiment, L is preferably in the range of 5-15mm.
In the above embodiment, the set length of the ablation working region is preferably a, which ranges from 10 to 30mm.
As shown in fig. 2, the invention further provides a method for using the tumor ablation needle with the function of fixed-point temperature measurement, which comprises the following steps:
S1, two groups of temperature sensor assemblies are respectively arranged on ablation needle bodies at two sides of an ablation working area, each group of temperature sensor assemblies comprises a plurality of temperature sensors, the plurality of temperature sensors are sequentially distributed at intervals along the length direction of the ablation needle body, the distance between the plurality of temperature sensors of each group is L, the distance between the temperature sensor close to the head end of the ablation working area and the head end of the ablation working area is L/2, and the distance between the temperature sensor close to the tail end of the ablation working area and the tail end of the ablation working area is L/2;
S2, numbering a plurality of temperature sensors from the needle point to the tail end of the ablation needle body;
S3, penetrating an ablation needle from the front of the vertebral body through the pedicle of vertebral arch under the guidance of X-ray fluoroscopy, and placing an ablation working area in a tumor range;
And S4, returning data through temperature sensors of different measuring points to obtain temperature data of a position at a specific distance from an ablation working area, and observing temperature change conditions of the measuring points to determine whether an ablation environment is achieved.
In the foregoing embodiment, preferably, the observing the temperature change condition of each measuring point to determine whether the ablation environment is reached specifically includes the following steps:
(1) Observing the temperature change conditions of two temperature sensors (namely in a tumor area) close to the head end and the tail end of an ablation working area, and determining whether the temperature of an ablation target is reached;
(2) The temperature measuring point of the temperature sensor far away from the tail end of the ablation working area is positioned at the root of the pedicle and is close to the nerve hole and the rear dura mater so as to monitor the temperature change around the nerve, and if the temperature around the nerve exceeds a set temperature range in the ablation process, the ablation should be stopped in time;
(3) Temperature change in the tumor area and at the edge can be monitored through temperature measuring points of other temperature sensors so as to judge whether the ablation range meets the requirement.
The temperature of the part with different distances from the ablation working area is judged through the temperatures of different temperature measuring points, so that the temperature condition of the tumor area is judged, and if the temperature reaches the ablation temperature range, the ablation range is judged to meet the requirement.
In the above embodiment, it is preferable that the set temperature range exceeded by the nerve surrounding temperature is 10-45 ℃.
In the present invention, the portion closer to the tip of the needle tip is the leading end, and the portion farther from the tip of the needle tip is the trailing end.
Example 1:
The invention provides an ablation needle with a multipoint temperature measurement function, as shown in fig. 1. The area A is an ablation working area, B1, B2, B3, B4, B5 and B6 are temperature sensors, the temperature sensors are sequentially arranged from the tip of the puncture needle to the rear, the distances between B1 and B2, between B2 and B3, between B4 and B5 and between B5 and B6 are L, and the distances from the B3 and B4 to the edge of the ablation working area are L/2 respectively; after the ablation is started, temperature data at a position at a specific distance from the ablation area can be obtained by returning data through the temperature sensor.
Taking the example of vertebral tumor ablation for illustration, the tumor is located in the anterior vertebral body. An ablation needle is inserted into the front of the vertebral body from the rear direction of the vertebral pedicle under the guidance of X-ray fluoroscopy, and an ablation working area is placed in the range of the tumor. At the moment, the temperature change condition in the tumor area can be monitored by the B3 and B4 temperature measuring points to determine whether the temperature of the ablation target is reached (the temperature of the ablation target depends on different ablation modes); the temperature measuring points B1, B2 and B5 can monitor the temperature change in the tumor area and the edge so as to judge whether the ablation range meets the requirement; b6 temperature measuring points are positioned at the root of the pedicle and close to the nerve holes and the rear dura mater, so that the temperature change around the nerve can be monitored. After the ablation is started, the temperature change condition of each temperature measuring point is observed to determine whether the ablation aim is achieved, and meanwhile, as the tolerable temperature of the nerve is 10-45 ℃, if the temperature of the B6 temperature measuring point exceeds the temperature interval in the ablation process, the ablation can be stopped in time, and the occurrence of nerve injury is avoided.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (7)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202411340268.XA CN118948418B (en) | 2024-09-25 | 2024-09-25 | A tumor ablation needle with fixed-point temperature measurement function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202411340268.XA CN118948418B (en) | 2024-09-25 | 2024-09-25 | A tumor ablation needle with fixed-point temperature measurement function |
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| CN118948418A true CN118948418A (en) | 2024-11-15 |
| CN118948418B CN118948418B (en) | 2025-06-06 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070066968A1 (en) * | 2005-09-21 | 2007-03-22 | Norbert Rahn | Temperature probe for insertion into the esophagus |
| CN102438538A (en) * | 2009-05-21 | 2012-05-02 | 东丽株式会社 | Ablation catheter with balloon, and ablation catheter system with balloon |
| US20140243808A1 (en) * | 2013-02-26 | 2014-08-28 | Cpsi Holdings Llc | Ablation probe with deployable sensors |
| CN112472288A (en) * | 2020-12-14 | 2021-03-12 | 上海优医基微能医疗科技有限公司 | Electrode needle with ablation boundary temperature measurement suitable for tumor treatment |
| CN115252116A (en) * | 2022-08-14 | 2022-11-01 | 南京瑞波医学科技有限公司 | Miniature ablation needle head |
| US20230210591A1 (en) * | 2020-04-21 | 2023-07-06 | Alexander McLellan | Temperature sensing catheter |
-
2024
- 2024-09-25 CN CN202411340268.XA patent/CN118948418B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070066968A1 (en) * | 2005-09-21 | 2007-03-22 | Norbert Rahn | Temperature probe for insertion into the esophagus |
| CN102438538A (en) * | 2009-05-21 | 2012-05-02 | 东丽株式会社 | Ablation catheter with balloon, and ablation catheter system with balloon |
| US20140243808A1 (en) * | 2013-02-26 | 2014-08-28 | Cpsi Holdings Llc | Ablation probe with deployable sensors |
| US20230210591A1 (en) * | 2020-04-21 | 2023-07-06 | Alexander McLellan | Temperature sensing catheter |
| CN112472288A (en) * | 2020-12-14 | 2021-03-12 | 上海优医基微能医疗科技有限公司 | Electrode needle with ablation boundary temperature measurement suitable for tumor treatment |
| CN115252116A (en) * | 2022-08-14 | 2022-11-01 | 南京瑞波医学科技有限公司 | Miniature ablation needle head |
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| CN118948418B (en) | 2025-06-06 |
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