A tumor ablation needle with fixed-point temperature measurement function

Abstract

The present invention relates to a tumor ablation needle with a fixed-point temperature measurement function and a method for using the same, wherein the tumor ablation needle comprises an ablation needle body having a needle tip; the ablation needle body is provided with an ablation working area of ​​a set length, and the head end of the ablation working area is set at a distance from the tail end of the needle tip; the ablation needle body is provided with two groups of temperature sensor assemblies, the two groups of temperature sensor assemblies are respectively located on both sides of the ablation working area, each group of the temperature sensor assemblies comprises a plurality of temperature sensors, and the plurality of temperature sensors are spaced apart along the length direction of the ablation needle body. The present invention can monitor the temperature changes around the ablation needle working area in real time to determine the ablation range.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a tumor ablation needle with a fixed-point temperature measurement function. Background Art

[0002] Ablation refers to inserting a specially designed ablation needle into the local tumor under the guidance of imaging equipment, and causing tumor necrosis through the operation of the ablation needle. The current mainstream physical ablation technologies include thermal ablation technology (such as radiofrequency ablation technology) and cold ablation technology. Nowadays, ablation has been widely used in various tumors (such as bone tumors, soft tissue tumors, and tumors of various solid organs) and has achieved good application results, especially in malignant tumors.

[0003] However, how to control the range of tumor ablation is an important issue in the ablation treatment process. If the ablation range is too small, it is difficult to achieve the purpose of tumor reduction, while if the ablation range is too large, it will cause damage to the surrounding normal tissues. How to monitor the ablation range in real time, ensure that the target area reaches the ablation temperature while ensuring that the adjacent important tissue structures are not damaged is always an urgent problem to be solved during the ablation process. Summary of the invention

[0004] In view of the above problems, the purpose of the present invention is to provide a tumor ablation needle with a fixed-point temperature measurement function, which can monitor the temperature changes around the working area of ​​the ablation needle in real time to determine the ablation range.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] The tumor ablation needle with a fixed-point temperature measurement function described in the present invention comprises an ablation needle body with a needle tip; an ablation working area of ​​a set length is arranged on the ablation needle body, and the head end of the ablation working area is set at a distance from the tail end of the needle tip; two groups of temperature sensor assemblies are arranged on the ablation needle body, and the two groups of temperature sensor assemblies are respectively located on both sides of the ablation working area, each group of the temperature sensor assemblies includes a plurality of temperature sensors, and the plurality of temperature sensors are spaced apart along the length direction of the ablation needle body.

[0007] For the tumor ablation needle, preferably, the distance between several temperature sensors in each group is L; the distance between the temperature sensor near the beginning of the ablation working area and the beginning of the ablation working area is L / 2; the distance between the temperature sensor near the end of the ablation working area and the end of the ablation working area is L / 2.

[0008] For the tumor ablation needle, preferably, the range of L is 5-15 mm.

[0009] For the tumor ablation needle, preferably, the set length of the ablation working area is A, and the range of A is 10-30 mm.

[0010] The method for using the tumor ablation needle with a fixed-point temperature measurement function of the present invention comprises the following steps:

[0011] Two groups of temperature sensor assemblies are respectively arranged on the ablation needle body on both sides of the ablation working area, each group of temperature sensor assemblies includes a plurality of temperature sensors, and the plurality of temperature sensors are sequentially spaced and distributed along the length direction of the ablation needle body, and the distance between the plurality of temperature sensors in each group is L, the temperature sensor close to the head end of the ablation working area is at a distance of L / 2 from the head end of the ablation working area, and the temperature sensor close to the tail end of the ablation working area is at a distance of L / 2 from the tail end of the ablation working area;

[0012] Numbering the plurality of temperature sensors from the needle tip to the tail end of the ablation needle body;

[0013] Place the ablation work area within the target range;

[0014] The temperature sensors at different measuring points transmit data back to obtain the temperature data at a specific distance from the ablation working area, and observe the temperature changes at each measuring point to determine whether the ablation environment is reached.

[0015] The method of use, preferably, observing the temperature change of each measuring point to determine whether the ablation environment is reached, specifically comprises the following steps:

[0016] Observe the temperature changes of the two temperature sensors near the beginning and end of the ablation working area to determine whether the ablation target temperature has been reached;

[0017] If during the ablation process, the temperature of the temperature measuring point of the temperature sensor far away from the end of the ablation working area exceeds the set temperature range, the ablation should be stopped in time;

[0018] The temperature changes in and around the target area can be monitored through the temperature measuring points of other temperature sensors to determine whether the ablation range meets the requirements.

[0019] In the method of use, preferably, the temperature of the temperature measuring point of the temperature sensor far away from the tail end of the ablation working area exceeds a set temperature range of 10-45°C.

[0020] The present invention adopts the above technical solution, which has the following advantages:

[0021] The present invention can provide temperature distribution data of different areas based on the temperature measurement of sites at specific distances from the ablation working area, thereby realizing the description of the ablation range; at the same time, by positioning the temperature measurement points around the temperature-sensitive tissue area, the regional temperature can be closely monitored to avoid damage; in addition, the temperature measurement function is integrated into the ablation needle, which can realize the multifunctionality of a single needle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the following detailed description of the preferred embodiment.The drawings are only for the purpose of illustrating the preferred embodiments and are not to be construed as limiting the invention.

[0023] Throughout the drawings, the same reference numerals are used to denote the same components. In the drawings:

[0024] Figure 1 It is a schematic diagram of the structure of the tumor ablation needle with a fixed-point temperature measurement function according to the present invention;

[0025] Figure 2 It is a schematic diagram of the ablation state of the present invention.

[0026] The reference numerals in the figures are as follows:

[0027] 1-ablation needle body; 2-ablation working area; 3-temperature sensor. DETAILED DESCRIPTION

[0028] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0029] The present invention provides a tumor ablation needle with a fixed-point temperature measurement function. A plurality of temperature sensors are arranged at different measuring points on the ablation needle body, and the plurality of temperature sensors are divided into two groups, which are respectively arranged on both sides of the ablation working area; thereby, temperature distribution data of different areas can be measured and provided, thereby realizing the description of the ablation range.

[0030] like Figure 1As shown, the tumor ablation needle with a fixed-point temperature measurement function provided by the present invention comprises an ablation needle body 1 with a needle tip; an ablation working area 2 of a set length is arranged on the ablation needle body 1, and the head end of the ablation working area 2 is set at a distance from the tail end of the needle tip; two groups of temperature sensor assemblies are arranged on the ablation needle body 1, and the two groups of temperature sensor assemblies are respectively located on both sides of the ablation working area 2, and each group of temperature sensor assemblies includes a plurality of temperature sensors 3, and the plurality of temperature sensors 3 are spaced apart along the length direction of the ablation needle body 1.

[0031] In the above embodiment, preferably, the distance between the several temperature sensors 3 in each group is L; the distance between the temperature sensor 3 near the head end of the ablation working area 2 and the head end 2 of the ablation working area is L / 2; the distance between the temperature sensor 3 near the tail end of the ablation working area 2 and the tail end of the ablation working area 2 is L / 2.

[0032] In the above embodiment, preferably, L is in the range of 5-15 mm.

[0033] In the above embodiment, preferably, the set length of the ablation working area is A, and the range of A is 10-30 mm.

[0034] like Figure 2 As shown, the present invention also provides a method for using a tumor ablation needle with a fixed-point temperature measurement function, comprising the following steps:

[0035] S1. Two groups of temperature sensor assemblies are respectively arranged on the ablation needle body on both sides of the ablation working area, each group of temperature sensor assemblies includes a plurality of temperature sensors, and the plurality of temperature sensors are sequentially spaced and distributed along the length direction of the ablation needle body, and the distance between the plurality of temperature sensors in each group is L, the temperature sensor close to the head end of the ablation working area is at a distance of L / 2 from the head end of the ablation working area, and the temperature sensor close to the tail end of the ablation working area is at a distance of L / 2 from the tail end of the ablation working area;

[0036] S2. Numbering a plurality of the temperature sensors from the needle tip to the tail end of the ablation needle body;

[0037] S3. Under the guidance of X-ray fluoroscopy, the ablation needle is inserted from the front of the vertebral body through the pedicle, and the ablation working area is placed within the tumor range;

[0038] S4. The temperature sensors at different measuring points transmit data back to obtain the temperature data at a specific distance from the ablation working area, and observe the temperature changes at each measuring point to determine whether the ablation environment is reached.

[0039] In the above embodiment, preferably, observing the temperature change of each measuring point to determine whether the ablation environment is reached specifically includes the following steps:

[0040] (1) Observe the temperature changes of the two temperature sensors near the beginning and end of the ablation working area (i.e., within the tumor area) to determine whether the ablation target temperature has been reached;

[0041] (2) The temperature sensor, which is far away from the tail end of the ablation working area, is located at the root of the pedicle, close to the nerve foramen and the posterior dura mater to monitor the temperature changes around the nerve. If the temperature around the nerve exceeds the set temperature range during the ablation process, the ablation should be stopped immediately;

[0042] (3) The temperature changes in the tumor area and at the edge can be monitored through the temperature measurement points of other temperature sensors to determine whether the ablation range meets the requirements.

[0043] It should be noted that the temperature of different measuring points is used to judge the temperature of parts at different distances from the ablation working area, so as to judge the temperature of the tumor area. If the temperature reaches the ablation temperature range, it means that the ablation range meets the requirements.

[0044] In the above embodiment, preferably, the set temperature range that the temperature around the nerve exceeds is 10-45°C.

[0045] It should be noted that, 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.

[0046] Embodiment 1:

[0047] The present invention proposes an ablation needle with a multi-point temperature measurement function, such as Figure 1 As shown. Area A is the ablation work area, B1, B2, B3, B4, B5 and B6 are temperature sensors, which are arranged from the tip of the puncture needle to the back, with the spacing between B1 and B2, between B2 and B3, between B4 and B5, and between B5 and B6 being L, and the distance from B3 and B4 to the edge of the ablation work area being L / 2; after ablation begins, the temperature data at a specific distance from the ablation area can be obtained by transmitting data back from the temperature sensor.

[0048] Taking vertebral tumor ablation as an example, the tumor is mostly located in the anterior vertebral body. Under the guidance of X-ray fluoroscopy, the ablation needle is inserted from the pedicle from the back to the front of the vertebral body, and the ablation work area is placed within the tumor range. At this time, the B3 and B4 temperature measuring points can monitor the temperature changes in the tumor area to determine whether the ablation target temperature has been reached (the ablation target temperature depends on different ablation methods); the B1, B2 and B5 temperature measuring points can monitor the temperature changes in and around the tumor area to determine whether the ablation range has met the requirements; the B6 temperature measuring point is located at the root of the pedicle, close to the neural foramen and the posterior dura mater, and can monitor the temperature changes around the nerve. After the ablation begins, observe the temperature changes at each temperature measuring point to determine whether the ablation purpose has been achieved. At the same time, since the nerve can tolerate a temperature of 10-45°C, if the temperature of the B6 temperature measuring point exceeds this temperature range during the ablation process, the ablation can be stopped in time to avoid nerve damage.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tumor ablation needle with a fixed-point temperature measurement function, characterized in that: An ablation needle body including a needle tip; The ablation needle body is provided with an ablation working area of ​​a set length, and the head end of the ablation working area is at a set distance from the tail end of the needle tip; Two groups of temperature sensor components are arranged on the ablation needle body, and the two groups of temperature sensor components are respectively located on both sides of the ablation working area, and each group of temperature sensor components includes 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 plurality of temperature sensors are numbered; the number of the temperature sensors is greater than or equal to four; and data is transmitted back through temperature sensors at different measuring points; The distance between the temperature sensors in each group is L; the distance between the temperature sensor near the head end of the ablation working area and the head end of the ablation working area is L / 2; the distance between the temperature sensor near the tail end of the ablation working area and the tail end of the ablation working area is L / 2; The range of L is 5-15 mm; The set length of the ablation working area is A, and the range of A is 10-30 mm.

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