Needle assembly and temperature measuring needle
By designing the force-applying component and notch structure of the needle assembly, the tip and the front of the needle bar can be bent, solving the problem that existing temperature measuring needles cannot be bent, and enabling temperature detection of important organs and bone locations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LEAPMED MEDICAL TECH
- Filing Date
- 2024-12-16
- Publication Date
- 2026-04-14
AI Technical Summary
Existing temperature-measuring needles cannot be bent, making it difficult to detect temperatures in locations blocked by vital organs, bones, etc.
A needle assembly was designed, including a needle tip, a needle bar, and a force-applying component. By setting notches in the force-applying component and the front of the needle bar, the needle tip and the front of the needle bar are allowed to bend in a specified direction. Combined with the rigid straightening function of the inner needle, the needle tip can be flexibly adjusted.
It enables the needle to bend in a specified direction to meet different surgical and temperature measurement needs, and can puncture into locations blocked by vital organs, bones, etc. for temperature detection.
Smart Images
Figure CN224112751U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, specifically to a needle assembly and a temperature measuring needle. Background Technology
[0002] Thermal ablation is an image-guided technique in which a microwave (or radiofrequency) ablation needle is percutaneously inserted into the tumor lesion. The tumor cells are coagulated and killed by heat, thus achieving the goal of tumor treatment.
[0003] The medical community generally considers 42.5℃-43℃ to be the optimal temperature for tumor cell death, with 45℃ considered the upper limit of a safe treatment temperature. Exceeding this safe temperature can damage surrounding vital tissues, especially the spinal cord and nerve tissue, due to the heat generated during microwave ablation. Conversely, excessively low temperatures can not only result in weak treatment effects but may also accelerate the spread of cancer cells. Therefore, accurate temperature monitoring is crucial during tumor ablation. A thermometer needle is a temperature-measuring device used in conjunction with the ablation needle during tumor ablation. The thermometer needle contains a thermocouple for temperature measurement. However, existing thermometer needles are inflexible, making it difficult to measure temperatures in locations obstructed by vital organs, bones, or other obstacles that prevent direct puncture. Utility Model Content
[0004] To address at least one of the problems mentioned in the background art, this utility model provides a needle assembly and a temperature measuring needle, which can bend the needle tip in a specified direction as needed to meet surgical requirements.
[0005] The specific technical solution provided by this utility model is as follows:
[0006] In a first aspect, a needle assembly is provided, including a needle tip, a needle shaft, and a force-applying component. The needle tip is fixed to the front end of the needle shaft, the needle shaft has an inner cavity communicating with the needle tip, the force-applying component is disposed in the inner cavity, the front part of the needle shaft has a notch communicating with the inner cavity, the force-applying component connects the needle tip and / or the front end of the inner cavity, and the force-applying component drives the needle tip and the front part of the needle shaft to bend together toward one side of the notch by applying a rearward force.
[0007] By means of the above technical solution, the needle assembly of this utility model, by setting a force-applying component and a notch at the front of the needle shaft, when the force-applying component applies force backward, under the guidance of the notch, the force-applying component can drive the needle tip and the front of the needle shaft to bend together in one direction of the notch. The direction of one side of the notch is a preset direction. Before the operation, the orientation of the notch can be adjusted by rotating the needle assembly, thereby adjusting the preset direction to match the specified direction of bending of the needle assembly required during the operation, thus meeting different surgical needs; the needle tip of the needle assembly of this utility model can bend in a specified direction to meet the needs of the operation.
[0008] As a preferred embodiment of the above scheme, the cross-section of the notch is a groove-shaped structure, which includes a groove opening and a groove bottom. The width of the groove opening is greater than the width of the groove bottom. The force-applying component drives the needle head and the front part of the needle bar to bend together in the direction from the groove bottom to the groove opening by applying force backward.
[0009] As a preferred embodiment of the above solution, the needle assembly further includes an inner needle, which is a rigid inner needle. The inner needle is slidably disposed in the inner cavity and abuts against the side wall of the inner cavity. The force-applying component includes a pull rod, which is slidably inserted through the inner needle.
[0010] As a preferred embodiment of the above solution, the force-applying component further includes a first pull block disposed on one side of the needle bar, the front end of the pull rod being connected to the needle tip and / or the side wall of the front end of the inner cavity, and the rear end of the pull rod extending out of the inner needle and connecting to the first pull block.
[0011] As a preferred embodiment of the above solution, the needle assembly further includes a handle, the needle bar is fixedly connected to the handle, a first pull block is slidably disposed on the handle, and the first pull block is provided with a first gripping part protruding from the handle.
[0012] As a preferred embodiment of the above solution, the handle is provided with a first slide groove, the first pull block is inserted into the first slide groove, the first pull block extends out of the first slide groove and is provided with a first gripping part.
[0013] As a preferred embodiment of the above solution, the needle assembly further includes a second pull block disposed on one side of the needle bar, with one end of the inner needle extending out of the inner cavity and connected to the second pull block.
[0014] As a preferred embodiment of the above solution, the needle assembly further includes a handle, the needle bar is fixedly connected to the handle, and a second pull block is slidably disposed on the handle, with a second gripping part protruding from the handle on the second pull block.
[0015] As a preferred embodiment of the above solution, the handle is provided with a second slide groove, the second pull block is inserted into the second slide groove, the second pull block extends out of the second slide groove and is provided with a second gripping part.
[0016] Secondly, a temperature measuring needle is provided, including the needle assembly and temperature measuring element as described above, wherein the temperature measuring element is disposed in the inner cavity and the temperature measuring end of the temperature measuring element is close to the needle tip.
[0017] By employing the above technical solution, the temperature measuring needle of this utility model, through the setting of a force-applying component and a notch at the front of the needle shaft, allows the force-applying component to bend the needle tip and the front of the needle shaft together towards one side of the notch when applying force backward, guided by the notch. Thus, during tumor ablation, the temperature measuring needle is used to detect the temperature of the ablated tissue. The needle tip can bend and puncture locations obstructed by vital organs, bones, etc., for temperature measurement. The direction of one side of the notch is a preset direction, which can be adjusted by rotating the needle assembly before surgery to adjust the orientation of the notch, thereby matching the specified direction of the temperature measurement location during surgery, thus meeting the temperature measurement needs of different locations. The temperature measuring needle of this utility model can bend towards locations obstructed by vital organs, bones, etc., to achieve temperature measurement, thereby meeting different temperature measurement requirements. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the structure of the temperature measuring needle of this utility model;
[0020] Figure 2 for Figure 1 A top-view structural diagram;
[0021] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along line AA;
[0022] Figure 4 for Figure 3 A partial structural diagram.
[0023] Figure 5 This is a partial structural diagram of the needle bar of this utility model;
[0024] Figure 6 for Figure 1 A schematic diagram of the handle when it is partially cut apart. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0026] It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," "upper," "lower," "inner," "outer," and "bottom," etc., used in this specification to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0027] As described in the background section, thermal ablation is an image-guided technique in which a microwave (or radiofrequency) ablation needle is percutaneously inserted into the tumor lesion. The tumor cells are coagulated and necrotic through heat, thus achieving the therapeutic goal.
[0028] The principle behind microwave ablation electrodes is to treat diseases by applying microwave energy to tissues. It works by transmitting microwave energy into the tissue, causing it to reach high temperatures, thereby ablating tumors and killing cancer cells. Microwave ablation electrodes deliver microwave energy to the patient's body through conductive materials, typically metals such as copper or aluminum. During transmission, the microwave energy is converted into heat energy by the tissue's resistance, raising the tissue temperature and achieving the therapeutic effect.
[0029] Radiofrequency ablation technology mainly relies on radiofrequency therapy devices with ablation and cutting functions, and its treatment mechanism is mainly thermal effect. When radiofrequency current flows through human tissue, the rapid change of electromagnetic field causes polarized water molecules in the tissue to move at high speed, generating heat (i.e., endogenous thermal effect), which causes the water inside and outside the cells to evaporate, dry, shrink and slough off, resulting in aseptic necrosis, thereby achieving the purpose of treatment.
[0030] The medical community generally considers 42.5℃-43℃ to be the optimal temperature for tumor cell death, with 45℃ considered the upper limit for safe treatment. Exceeding this safe temperature can damage surrounding vital tissues, especially the spinal cord and nerve tissue, due to the heat generated during microwave ablation. Conversely, excessively low temperatures can weaken the therapeutic effect and potentially accelerate the spread of cancer cells. Therefore, accurate temperature monitoring is crucial during tumor ablation. A thermometer needle is a device used in conjunction with an ablation needle during tumor ablation. The thermometer needle contains a thermocouple for temperature measurement. It detects whether the tumor surface has been heated to a specified temperature, determining whether all tumor tissue has been killed, while also preventing excessive heating of the ablation needle and damage to normal tissue. Existing thermometer needles are inflexible, making it difficult to measure temperatures in locations obstructed by vital organs or bones. The thermometer needle of this invention allows the needle tip to bend and puncture locations blocked by vital organs or bones during tumor ablation, thus meeting diverse temperature measurement needs. The embodiments of this utility model are described in detail below, wherein the preceding part in the embodiments of this utility model refers to... Figure 3 The arrow in the image points upwards. Figure 5 The direction of the arrow in the image.
[0031] Example 1
[0032] See Figure 3 This utility model provides a needle assembly, including a needle tip 1, a needle shaft 2, and a force-applying component 3. The needle tip 1 is fixed to the front end of the needle shaft 2. The needle shaft 2 has an inner cavity 21 communicating with the needle tip 1. The force-applying component 3 is disposed in the inner cavity 21. The front part of the needle shaft 2 has a notch 22 communicating with the inner cavity 21. The force-applying component 3 connects the needle tip 1 and / or the side wall of the front end of the inner cavity 21. The force-applying component 3, by applying a rearward force, causes the needle tip 1 and the front part of the needle shaft to bend together towards one side of the notch 22 (not shown). The front part of the needle shaft is made of a flexible material that can be bent, and the needle tip 1 is the needle tip portion.
[0033] See Figure 4 , Figure 5The notch 22 has a groove-like cross-section, including a groove opening 221 and a groove bottom 222. The width of the groove opening 221 is greater than the width of the groove bottom 222. The force-applying component 3 applies force backward, causing the front parts of the needle tip 1 and the needle bar 2 to bend together in the direction from the groove bottom 222 to the groove opening 221. The notch 22 guides the bending direction of the front parts of the needle tip 1 and the needle bar 2. The direction from the groove bottom 222 to the groove opening 221 is the opening direction of the notch 22. In this embodiment, the opening direction of the notch 22 is upward. The width of the groove opening 221 is greater than the width of the groove bottom 222, so that when the front part of the needle bar is deformed by the force-applying component, there is sufficient distance between the two sides of the groove opening 221, making it less likely to be squeezed together, thereby improving the bending effect of the front part of the needle bar. In this embodiment, there are multiple notches 22, and the notches 21 are evenly distributed along the axial direction of the needle bar at the front part of the needle bar. The groove-like structure is approximately trapezoidal or triangular; see [link to documentation]. Figure 5 Viewed from the side, the multiple notches 22 together with the front part of the needle bar between the notches 22 form a serrated structure. In other embodiments, the groove structure may also be rectangular or other shapes.
[0034] See Figures 1-3 The needle assembly also includes an inner needle 4, which is a rigid inner needle, such as a stainless steel inner needle. The inner needle 4 is used to straighten the bent needle tip 1 and the front part of the needle bar after temperature measurement. The inner needle 4 is slidably disposed in the inner cavity 21 and abuts against the side wall of the inner cavity 21. The axial direction of the inner needle 4 coincides with the axial direction of the needle bar 2. The force-applying component 3 includes a pull rod 31, which slidably passes through the inner needle 4. The force-applying component 3 also includes a first pull block 32 disposed on one side of the needle bar 2. The front end of the pull rod 31 is connected to the needle tip 1 and / or the side wall of the front end of the inner cavity 21, and the rear end of the pull rod 31 extends out of the inner needle 4 and is connected to the first pull block 32. In this embodiment, the front end of the pull rod 31 is connected to the needle tip 1, and the pull rod 31 causes the needle tip 1 and the front part of the needle bar to bend by pulling the needle tip 1. The needle assembly also includes a handle 5, the needle bar 2 is fixedly connected to the handle 5, and the first pull block 32 is slidably disposed on the handle 5. The first pull block 32 is provided with a first gripping part 321 protruding from the handle 5. The handle 5 has a first groove 51, and a first pull block 32 is inserted into the first groove 51. The first pull block 32 extends out of the first groove 51 and has a first gripping part 321. The needle assembly also includes a second pull block 6 disposed on one side of the needle bar 2. One end of the inner needle 4 extends out of the inner cavity 21 and is connected to the second pull block 6. The second pull block 6 is slidably disposed on the handle 5, and the second pull block 6 has a second gripping part 61 protruding from the handle 5. The handle 5 has a second groove 52, and the second pull block 6 is inserted into the second groove 52. The second pull block 6 extends out of the second groove 52 and has a second gripping part 61.
[0035] See Figure 3 , Figure 6In this embodiment, the handle 5 has a cavity 53. The front end of the handle 5 is provided with a first through hole 54 communicating with the cavity 53. The rear end of the needle bar 2 passes through the first through hole 54, extends into the cavity 53, and is fixed on the inner wall of the first through hole 54. The first pull block 32 and the second pull block 6 are arranged side by side in the cavity 53. The second pull block 6 is provided with a second through hole 62. The rear end of the inner needle 4 passes through the needle bar 2, passes through the second through hole 62, and is fixed on the inner wall of the second through hole 62. The first groove 51 and the second groove 52 are arranged side by side on the upper end of the handle 5 and communicate with the cavity 53. The first grip part 321 and the second grip part 61 are arranged side by side against the upper end surface of the handle 5. The first grip part 321 and the second grip part 61 are push-pull handles. The first grip part 321 and the second grip part 61 can be set as indicators of the bending direction of the needle 1. For example, in this embodiment, the needle 1 bends upward, and the first grip part 321 and the second grip part 61 are set on the upper end surface of the handle 5. In other embodiments, if the opening direction of the notch 22 is to the left (right), the first grip part 321 and the second grip part 61 are set on the left (right) end surface of the handle 5. In this way, the bending direction of the needle 1 and the front of the needle bar can be intuitively understood.
[0036] The needle 1 and the front of the needle bar are initially straight. The first grip 321 is used to drive the first pull block 32 to move backward, thereby causing the pull rod 31 to pull the needle 1 and the front of the needle bar backward to bend. An elastic structure (not shown) can be provided between the first grip 321 or the first pull block 32 and the handle 5, so that after the first grip 321 is released, the pull rod 31 can automatically return to its original position under the elastic force of the elastic structure, thereby driving the needle 1 and the front of the needle bar to return to their original position. The second grip 61 is used to drive the second pull block 6 to move backward, thereby causing the inner needle 4 to move backward without rigidly restricting the front of the needle bar, which facilitates the bending of the front of the needle bar. An elastic structure (not shown) can also be provided between the second grip 61 or the second pull block 6 and the handle 5, so that after the temperature measurement is completed, after the second grip 61 is released, the inner needle 4 can automatically return to its original position under the elastic force of the elastic structure, straightening the bent front of the needle bar and the needle 1. The second pull block 6 is directly opposite the inner needle 4. The first pull block 32 is located on one side of the inner needle 4 and the second pull block 6. In order to facilitate connection with the pull rod 31 that passes through the inner needle 4, the rear end of the first pull block 32 is provided with an L-shaped extension block 322. One end of the extension block 322 is directly opposite the rear side of the inner needle 4 and the second pull block 6. The rear end of the pull rod 31 passes through the rear end of the inner needle 4 and is fixed on the extension block 322.
[0037] In this embodiment, when the needle assembly is in use, the second pull block 6 is first pushed backward by the second gripping part 61. The second pull block 6 moves backward along the second slide groove 52 and drives the inner needle 4 to move backward along the inner cavity. After the inner needle 4 moves backward, the front part of the needle bar is not rigidly restricted, which facilitates the bending of the front part of the needle bar. Then, the first pull block 32 is pushed backward by the first gripping part 321. The first pull block 32 moves backward along the first slide groove 51 and drives the pull rod 31 to move backward. Under the guidance of the notch 22, the pull rod 31 pulls the needle tip 1 and the front part of the needle bar together to bend in one direction of the notch 22. The direction of one side of the notch 22 is a preset direction. Before the operation, the orientation of the notch 22 can be adjusted by rotating the needle assembly to adjust the preset direction to match the specified direction of bending of the needle assembly during the operation, thereby meeting different surgical needs. At the end of the operation, the first gripping part 321 and the second gripping part 61 are pushed forward at the same time. Since the inner needle 4 is a rigid inner needle, the front part of the needle bar and the needle tip 1 can be straightened under the action of the inner needle 4. The needle tip 1 of this utility model needle assembly can be bent in a specified direction to meet surgical needs.
[0038] Example 2
[0039] See Figures 1-4 This utility model provides a temperature measuring needle, including the needle assembly, temperature measuring element 7, sheath 8 and interface 9 as described above. The temperature measuring element 7 is disposed in the inner cavity 21, and the temperature measuring end of the temperature measuring element 7 is close to the needle tip 1. The interface 9 is connected to the wire 10. One end of the wire 10 is connected to the temperature measuring element 7 on the handle 5. The sheath 8 is sleeved on the outside of the needle rod 2 and fixedly connected to the needle rod 2. The axis of the sheath 8 coincides with the axis of the needle rod 2 and the inner needle 4. The front end of the needle rod 2 and the needle tip 1 extend out of the sheath 8. At the same time, the sheath 8 covers the notch 22 of the needle rod 2. The front part of the sheath 8 is made of a flexible material, such as PE material. When the needle tip 1 and the front part of the needle rod are bent, the front part of the sheath 8 also bends. The rear end of the sheath 8 passes through the first through hole 54 of the handle 5 and is fixed on the inner wall of the first through hole 54. The temperature measuring element 7 includes a temperature measuring wire 71 and a temperature measuring sensor 72. The temperature measuring sensor 72 is the temperature measuring end of the temperature measuring element 7. The temperature measuring wire 71 passes through the inner needle 4. The front end of the temperature measuring wire 71 passes through the inner needle 4 and connects to the temperature measuring sensor 72. The rear end of the temperature measuring wire 71 passes through the rear end of the inner needle 4 and connects to the wire 10 of the interface 9.
[0040] In this embodiment, when the temperature measuring needle is in use, the second pull block 6 is first pushed backward by the second grip 61. The second pull block 6 moves backward along the second slide groove 52 and drives the inner needle 4 to move backward along the inner cavity 21. The inner needle 4 moves backward along the temperature measuring element 7, while the temperature measuring element 7 remains stationary. After the inner needle 4 moves backward, there is no rigid restriction on the front part of the needle rod, which facilitates the bending of the front part of the needle rod. Then, the first pull block 32 is pushed backward by the first grip 321. The first pull block 32 moves backward along the first slide groove 51 and drives the pull rod 31 to move backward. Guided by the notch 22, the pull rod 31 pulls the needle tip 1 and the front part of the needle rod together to bend towards one side of the notch 22. The front part of the temperature measuring element 7 also bends together. In this way, when performing tumor ablation, the temperature measuring needle is used to detect the temperature of the ablated tissue. The needle 1 can bend and puncture locations obstructed by vital organs, bones, etc., for temperature measurement by the temperature measuring element 7. One side of the notch 22 has a preset direction. Before surgery, the orientation of the notch 22 can be adjusted by rotating the needle assembly to match the specified direction of the temperature measurement location during surgery, thus meeting the temperature measurement needs of different locations. The needle 1 of this invention can bend to locations obstructed by vital organs, bones, etc., to achieve temperature measurement, thus meeting different temperature measurement requirements. At the end of the surgery, the first gripping part 321 and the second gripping part 61 are pushed forward simultaneously. Since the inner needle 4 is a rigid inner needle, its action straightens the front part of the needle shaft and the needle 1. The needle 1 of this invention's needle assembly can bend in a specified direction to meet surgical needs.
[0041] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.
[0042] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
Claims
1. A needle assembly, characterized in that, The device includes a needle (1), a needle bar (2), and a force-applying component (3). The needle (1) is fixed to the front end of the needle bar (2). The needle bar (2) has an inner cavity (21) communicating with the needle (1). The force-applying component (3) is disposed in the inner cavity (21). The front part of the needle bar (2) has a notch (22) communicating with the inner cavity (21). The force-applying component (3) connects the front end of the needle (1) and / or the inner cavity (21). The force-applying component (3) causes the front part of the needle (1) and the needle bar (2) to bend together toward one side of the notch (22) by applying a force backward.
2. The needle assembly according to claim 1, characterized in that, The cross-section of the notch (22) is a groove structure, which includes a groove opening (221) and a groove bottom (222). The width of the groove opening (221) is greater than the width of the groove bottom (222). The force-applying member (3) applies force backward to drive the front part of the needle tip (1) and the needle bar (2) to bend together towards the groove bottom (222) in the direction pointing to the groove opening (221).
3. The needle assembly according to claim 1, characterized in that, It also includes an inner needle (4), which is a rigid inner needle. The inner needle (4) is slidably disposed in the inner cavity (21) and abuts against the side wall of the inner cavity (21). The force-applying member (3) includes a pull rod (31), which is slidably inserted through the inner needle (4).
4. The needle assembly according to claim 3, characterized in that, The force-applying component (3) further includes a first pull block (32) disposed on one side of the needle bar (2). The front end of the pull rod (31) is connected to the side wall of the front end of the needle (1) and / or the inner cavity (21). The rear end of the pull rod (31) extends out of the inner needle (4) and is connected to the first pull block (32).
5. The needle assembly according to claim 4, characterized in that, It also includes a handle (5), the needle bar (2) is fixedly connected to the handle (5), the first pull block (32) is slidably disposed on the handle (5), and the first pull block (32) is provided with a first gripping part (321) protruding from the handle (5).
6. The needle assembly according to claim 5, characterized in that, The handle (5) is provided with a first slide groove (51), the first pull block (32) is inserted into the first slide groove (51), the first pull block (32) extends out of the first slide groove (51) and is provided with the first grip part (321).
7. The needle assembly according to claim 3, characterized in that, It also includes a second pull block (6) disposed on one side of the needle bar (2), one end of the inner needle (4) extends out of the inner cavity (21) and is connected to the second pull block (6).
8. The needle assembly according to claim 7, characterized in that, It also includes a handle (5), the needle bar (2) is fixedly connected to the handle (5), the second pull block (6) is slidably disposed on the handle (5), and the second pull block (6) is provided with a second gripping part (61) protruding from the handle (5).
9. The needle assembly according to claim 8, characterized in that, The handle (5) is provided with a second slide groove (52), the second pull block (6) is inserted into the second slide groove (52), the second pull block (6) extends out of the second slide groove (52) and is provided with a second grip part (61).
10. A temperature measuring needle, characterized in that, Includes a temperature measuring element (7) and a needle assembly as described in any one of claims 1-9, wherein the temperature measuring element (7) is disposed in the inner cavity (21) and the temperature measuring end of the temperature measuring element (7) is close to the needle tip (1).