A puncture needle with temperature measurement function for use with a tumor ablation needle

Abstract

The present invention relates to a puncture needle with a temperature measurement function for use in conjunction with a tumor ablation needle, comprising: a first component for puncturing and positioning at the tumor site of a patient and for accommodating the ablation needle to provide a working area for the ablation needle; a second component sleeved outside the first component for measuring the temperature at different positions of the tumor under pressing; and a third component sleeved outside the second component for protecting the second component. The present invention can measure the spatial temperature in the ablation working area, so as to accurately map the ablation range.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a puncture needle with a temperature measurement function for use in conjunction with a tumor ablation needle. Background Art

[0002] Ablation treatment refers to a treatment method in which a special ablation needle is inserted into the local tumor through the guidance of imaging equipment, and the tumor is necrotized by different methods. Currently, the mainstream physical ablation treatment technologies include thermal ablation technologies (such as radiofrequency ablation technology) and cryoablation technology. Ablation treatment has been widely applied to various tumors (such as bone tumors, soft tissue tumors, and solid organ tumors) and has achieved good application effects, especially playing a good therapeutic role in the palliative treatment of malignant tumors.

[0003] How to control the ablation range of tumors 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 has always been a difficult point and research hotspot in ablation treatment.

[0004] Measuring the temperature change in the area around the ablation needle is a good means to monitor the ablation range. However, most of the existing technologies linearly measure the temperature around the ablation needle and cannot measure the temperature at different spatial positions around the ablation needle to form the concept of a temperature field, thus unable to intuitively judge the ablation range. Summary of the Invention

[0005] In view of the above problems, the purpose of the present invention is to provide a puncture needle with a temperature measurement function for use in conjunction with a tumor ablation needle, which can measure the spatial temperature in the ablation working area, thereby accurately mapping the ablation range.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] The present invention provides a puncture needle with a temperature measurement function for use in conjunction with a tumor ablation needle, comprising: a first component for puncturing and positioning at the tumor site of a patient and for accommodating the ablation needle to provide a working area for the ablation needle; a second component sleeved outside the first component for measuring the temperature at different positions of the tumor under pressing; and a third component sleeved outside the second component for protecting the second component.

[0008] Preferably, for the puncture needle, the first component includes a first tubular structure and a tip, the tip being disposed at one end of the first tubular structure; a constriction recessed towards its central axis is provided at a position of the first tubular structure near the tip, so that the first tubular structure forms a hollowed-out area, and the connection area between the tip and the first tubular structure forms a frustum-like structure.

[0009] For the puncture needle described above, preferably, the second component includes a second tubular structure, an elastic metal rod, and a circular ring connecting member; a plurality of the elastic metal rods are circumferentially arranged around the central axis of the second tubular structure at the bottom of the second tubular structure, and a first end of the elastic metal rod is connected to the bottom of the second tubular structure, and a second end thereof is connected to the circular ring connecting member; the second tubular structure with a plurality of the elastic metal rods and the circular ring connecting member is sleeved outside the first tubular structure, so that the circular ring connecting member abuts against the frustum-shaped structure, and the elastic metal rod is opposite to the isthmus of the first tubular structure; when the second tubular structure is pressed, the elastic metal rod can be bent into an arch shape.

[0010] For the puncture needle described above, preferably, a plurality of temperature sensors are uniformly arranged along the length of each elastic metal rod, and the temperature sensors are used to measure the temperature of the tumor.

[0011] For the puncture needle described above, preferably, the first tubular structure extends out of the second tubular structure by a set length.

[0012] For the puncture needle described above, preferably, the length of the elastic metal rod is greater than the length of the isthmus.

[0013] For the puncture needle described above, preferably, the third component includes a third tubular structure, the third tubular structure is sleeved outside the second tubular structure with a plurality of the elastic metal rods and the circular ring connecting member, and a first end of the third tubular structure abuts against the frustum-shaped structure.

[0014] For the puncture needle described above, preferably, it further includes a handle, the handle is arranged on the outer wall of the third tubular structure, and the handle is close to the second end of the third tubular structure.

[0015] Due to the adoption of the above technical solutions, the present invention has the following advantages:

[0016] (1) By introducing an elastic metal rod, the present invention can construct a temperature measurement space matrix in the ablation working area to accurately map the ablation range.

[0017] (2) With a multi-component structure, the present invention can work in different application scenarios. For example, during bone puncture, the third component can protect the temperature sensors and elastic metal rods of the second component from being damaged; the closed design in front of the first component can prevent the ablation needle from overshooting and causing damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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 the purpose of showing the preferred embodiments and are not to be considered as limiting the present invention. Throughout the drawings, like reference numerals represent like components. In the drawings:

[0019] Figure 1 is the assembly drawing of the puncture needle with temperature measurement function according to the present invention;

[0020] Figure 2 is Figure 1 the sectional view of;

[0021] Figure 3 is Figure 2 the enlarged schematic view of part A in;

[0022] Figure 4 is the schematic view of the first component in the present invention;

[0023] Figure 5 is the schematic view of the second component in the present invention;

[0024] Figure 6 is Figure 5 the enlarged schematic view of part B in;

[0025] Figure 7 is the schematic view of the second component after being pressed in the present invention;

[0026] Figure 8 is the schematic view of the third component in the present invention;

[0027] The reference numerals in the figure are as follows:

[0028] 1 - the first component; 101 - the first tubular structure; 102 - the tip; 103 - the isthmus; 2 - the second component; 201 - the second tubular structure; 202 - the elastic metal rod; 203 - the circular ring connecting piece; 204 - the temperature sensor; 3 - the third component; 301 - the third tubular structure; 302 - the handle. Detailed Embodiments

[0029] The exemplary embodiments of the present invention will be described in more detail below with reference to the drawings. Although the exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present invention can be more thoroughly understood and the scope of the present invention can be completely conveyed to those skilled in the art.

[0030] The present invention provides a puncture needle with a temperature measurement function for use in conjunction with a tumor ablation needle. By introducing an elastic metal rod, a temperature measurement space matrix can be constructed in the ablation working area to accurately map the ablation range.

[0031] As Figures 1 to 3 shown, the puncture needle with a temperature measurement function for use in conjunction with a tumor ablation needle provided by the present invention includes: a first component 1 for puncturing and positioning at the tumor site of a patient; a second component 2 sleeved outside the first component 1 for measuring the temperature at different positions of the tumor under pressing; and a third component 3 sleeved outside the second component 2 for protecting the second component 2.

[0032] In the above embodiment, preferably, as Figure 4 shown, the first component 1 includes a first tubular structure 101 and a tip 102, and the tip 102 is provided at one end of the first tubular structure 101; an isthmus 103 recessed towards its central axis is provided at a position of the first tubular structure 101 close to the tip, so that the first tubular structure 101 forms a hollowed-out area, and a stepped structure is formed at the connection area between the tip 102 and the first tubular structure 101; of course, the tip 102 and the first tubular structure 101 can be integrally formed.

[0033] In the above embodiment, preferably, as Figure 5 and Figure 6 shown, the second component 2 includes a second tubular structure 201, an elastic metal rod 202, and a circular ring connector 203; a plurality of elastic metal rods 202 are circumferentially arranged around the central axis of the tubular structure 201 at the bottom of the second tubular structure 201, and the first end of the elastic metal rod 202 is connected to the bottom of the second tubular structure 201, and its second end is connected to the circular ring connector 203; the second tubular structure 201 with a plurality of elastic metal rods 202 and the circular ring connector 203 is sleeved outside the first tubular structure 101, so that the circular ring connector 203 abuts against the stepped structure, and the elastic metal rod 202 is opposite to the isthmus 103 of the first tubular structure 101; when the second tubular structure 201 is pressed, the elastic metal rod 202 can be bent into an arch shape (see Figure 7 ).

[0034] In the above embodiment, preferably, as Figure 6 shown, a plurality of temperature sensors 204 are uniformly arranged along the length of each elastic metal rod 202, and the temperature sensors 204 are used to measure the temperature of the tumor.

[0035] In the above embodiment, preferably, the first tubular structure 101 extends out of the second tubular structure 201 by a set length, thereby facilitating the pressing of the second tubular structure 201.

[0036] In the above embodiments, preferably, the length of the elastic metal rod 202 is greater than the length of the isthmus 103.

[0037] In the above embodiments, preferably, as Figure 8 shown, the third component 3 includes a third tubular structure 301. The third tubular structure 301 is sleeved outside the second tubular structure 201 with a plurality of elastic metal rods 202 and a circular ring connector 203, and the first end of the third tubular structure 301 abuts against the frustum-shaped structure.

[0038] In the above embodiments, preferably, the present invention further includes a handle 302. The handle 302 is arranged on the outer wall of the third tubular structure 301 and is close to the second end of the third tubular structure 301. Thus, the handle can facilitate the extraction of the third tubular structure 301.

[0039] The working process of the present invention is as follows:

[0040] During use, first puncture the tumor site with the assembled puncture needle, and then pull out the third component from the needle tail to expose the first component with the second component; push forward the second tubular structure 201 of the second component to bend a plurality of elastic metal rods 202 outward in the front temperature measurement area to form a lantern-like structure, so that the temperature sensors are located at different spatial positions at the front end of the puncture needle; as the pushing length is different, the bending degree of the metal rods is different, and the vertical distance of the temperature sensor from the central axis will also change, so that the sensors can be located at different spatial positions; insert the ablation needle from inside the first component to the front so that the working area is located at the fence-like structure to perform sufficient heat exchange with the surrounding tumor tissue. After ablation starts, the temperature data and temperature-space data of the working area can be obtained by the temperature sensors transmitting data back.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A puncture needle with a temperature measurement function used in conjunction with a tumor ablation needle, characterized in that: include: A first component is used for puncturing and positioning at a tumor site of a patient and for accommodating an ablation needle to provide a working area for the ablation needle; A second component is mounted outside the first component and is used to measure the temperature of different positions of the tumor under pressure; A third component is sleeved outside the second component and is used to protect the second component; The first component includes a first tubular structure and a tip, wherein the tip is disposed at one end of the first tubular structure; The first tubular structure is provided with an isthmus recessed toward its central axis at a position close to the tip, so that the first tubular structure forms a hollow area, and the connecting area between the tip and the first tubular structure forms a terrace-like structure; The second component includes a second tubular structure, an elastic metal rod and a circular ring connector; A plurality of the elastic metal rods are circumferentially arranged around the central axis of the tubular structure at the bottom of the second tubular structure, and the first ends of the elastic metal rods are connected to the bottom of the second tubular structure, and the second ends of the elastic metal rods are connected to the annular connector; The second tubular structure with a plurality of the elastic metal rods and the circular connecting piece is sleeved outside the first tubular structure, so that the circular connecting piece abuts against the table-shaped structure, and the elastic metal rod faces the isthmus of the first tubular structure; when the second tubular structure is pressed, the elastic metal rod can be bent into an arch shape; Several temperature sensors are evenly arranged along the length of each elastic metal rod, and the temperature sensors are used to measure the temperature of the tumor, so that the temperature sensors can be located in different spatial positions at the front end of the puncture needle to form a lantern-like structure and construct a temperature measurement space matrix.

2. The puncture needle according to claim 1, characterized in that: The first tubular structure extends out of the second tubular structure by a set length.

3. The puncture needle according to claim 1, characterized in that: The length of the elastic metal rod is greater than the length of the isthmus.

4. The puncture needle according to claim 1, characterized in that: The third component comprises a third tubular structure, which is sleeved outside the second tubular structure with a plurality of elastic metal rods and annular connectors, and a first end of the third tubular structure abuts against the table-like structure.

5. The puncture needle according to claim 4, characterized in that: It also includes a handle, which is arranged on the outer wall of the third tubular structure and is close to the second end of the third tubular structure.

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