A treatment needle device
By incorporating a graphite heating element and conductive circuit at the needle tip, combined with a polytetrafluoroethylene positioning support and a temperature measuring unit, the problems of low heating efficiency and stability in traditional treatment needles are solved, achieving rapid heating and safe heating, thereby improving treatment efficacy and service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI SHUXIN TECH DEV CO LTD
- Filing Date
- 2025-01-20
- Publication Date
- 2026-06-19
AI Technical Summary
Traditional heating methods for therapeutic needles result in slow temperature rise at the needle tip, low heating efficiency, and issues with the stability of the tail material and insulation design, affecting service life and safety.
The device employs a heating element at the needle tip, using graphite material and a conductive circuit to directly heat the needle tip. Combined with a PTFE positioning support and a temperature measuring unit, it achieves rapid heating and precise temperature control, while ensuring safety through insulation design.
Rapid heating of the needle tip is achieved, improving heating efficiency, enhancing connection stability and safety, avoiding energy loss and structural deformation, and ensuring operational safety.
Smart Images
Figure CN224369957U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of needle-type medical devices, specifically relating to a therapeutic needle device. Background Technology
[0002] With the development of medical technology, the requirements for needle-type medical devices are becoming increasingly stringent, such as improving precision, reducing patient pain, and increasing therapeutic efficacy. In particular, driven by minimally invasive surgery and precision medicine, higher requirements have been placed on the design of therapeutic needles.
[0003] Currently, traditional therapeutic needles typically have an electric current applied to the tail end, which is then transferred to a heating element at the tip via a conductor, utilizing the Joule heating effect to raise the temperature of the heating element. However, this heating method has drawbacks. The heat must be transferred from the tail end to the tip via a heat conductor, resulting in a slow temperature rise at the tip, making it difficult to quickly reach the desired temperature, leading to low heating efficiency and consequently affecting treatment effectiveness. Secondly, this tail-end heating method places high demands on the stability, durability, and material compatibility of the conductor and heating element to prevent malfunctions or temperature fluctuations during operation. Furthermore, overheating can cause premature deformation or aging of the tail material, affecting the needle's lifespan and safety. Finally, the heating element must be insulated during use to prevent burns to the operator.
[0004] Therefore, in order to address the above problems, there is an urgent need for a treatment needle device that can achieve rapid heating, uniform heating, precise temperature control, and heat insulation protection during operation. Utility Model Content
[0005] The main purpose of this invention is to provide a treatment needle device that can directly generate heat at the needle tip, accelerate the heating of the treatment needle device, and allow heat to accumulate rapidly at the needle tip.
[0006] The technical solution adopted by this utility model is as follows:
[0007] The needle includes a needle body extending longitudinally, the needle body having a needle tip portion located on a distal side and a needle tail portion located on a proximal side, characterized in that:
[0008] The needle body includes a first conductive portion near the needle tail, a second conductive portion near the needle tip, and a heating portion disposed within the second conductive portion.
[0009] The end of the first conductive part is insulated from the end of the second conductive part, and the end of the first conductive part near the second conductive part is electrically connected to the heating part.
[0010] The second conductive part has a hollow cavity, and the heating part is installed in the cavity and electrically connected to the second conductive part. The heating part is in thermal contact with the second conductive part at least at the needle tip of the needle body.
[0011] The first conductive part and the second conductive part are adapted to be connected to an external power source and together with the heating part to form a conductive circuit, so that the heating part is heated by the current flowing through the conductive circuit, thereby heating the second conductive part, so as to heat at least the tip of the needle body.
[0012] Furthermore, the heating element is made of graphite material.
[0013] Furthermore, the first conductive portion and the second conductive portion together generally form the outer contour of the needle body, and an insulating member is provided at the connection between the first conductive portion and the second conductive portion to electrically insulate the first conductive portion and the second conductive portion.
[0014] Furthermore, it also includes a first insulating shell, which is sleeved outside the first conductive part and the second conductive part, and at least the needle tip of the needle body extends out of the first insulating shell.
[0015] Furthermore, it also includes a first conductive spring and a second conductive spring; the first conductive spring is disposed on the first insulating shell and contacts the first conductive part to electrically connect the first conductive part to one pole of an external power source; the second conductive spring is disposed on the first insulating shell and contacts the second conductive part to electrically connect the second conductive part to the other pole of an external power source.
[0016] Furthermore, it also includes a temperature measuring unit, which includes a temperature measuring spring disposed on the first insulating shell and a thermocouple fixed to the temperature measuring spring, wherein the temperature measuring spring is in thermal contact with the second conductive part.
[0017] Furthermore, it also includes a second insulating shell, which is sleeved outside the first insulating shell, and at least the needle tip of the needle body extends out of the second insulating shell.
[0018] Furthermore, the needle body is configured to be able to be inserted into or pulled out of the first insulating housing and the second insulating housing by moving along the longitudinal direction.
[0019] Furthermore, it also includes a positioning support member disposed in the cavity of the second conductive part. The positioning support member is sleeved on the heating part at least at the connection between the heating part and the first conductive part, and the positioning support member is fixedly connected to the end of the first conductive part near the second conductive part to strengthen the connection between the heating part and the first conductive part. The end of the first conductive part near the second conductive part is inserted into the heating part in the positioning support member to achieve an electrical connection with the heating part.
[0020] Furthermore, the positioning support is made of polytetrafluoroethylene (PTFE).
[0021] Compared with the prior art, the present invention has the following advantages:
[0022] 1. By directly heating the heating element, the heating element and the tip of the needle at the distal end of the needle body can be rapidly heated, achieving the purpose of tip heating and avoiding the problems of energy loss and low heating efficiency in traditional treatment needles that are electrically heated at the tail.
[0023] 2. By using graphite as the material for the heating element, rapid heating of the heating element is achieved because graphite has excellent electrical and thermal conductivity and is easy to process into small shapes.
[0024] 3. By using polytetrafluoroethylene (PTFE) as the material for the positioning support, when the treatment needle device needs to deal with high temperature or rapid temperature difference changes, the PTFE positioning support can maintain stable performance, avoid structural deformation or performance degradation due to temperature, and enhance the connection stability between the first conductive part and the heating part.
[0025] 4. By setting up a temperature measuring unit, real-time temperature detection and feedback are achieved, making it convenient for operators to adjust the working temperature according to the actual situation. Attached Figure Description
[0026] Figure 1 This is a partial structural schematic diagram of the treatment needle device without a shell according to an embodiment of the present invention;
[0027] Figure 2 This is an overall cross-sectional view of the treatment needle device with a housing according to an embodiment of the present invention;
[0028] Figure 3 This is a partial perspective view of a treatment needle device without a shell, according to an embodiment of the present invention.
[0029] Figure 4 This is a partial perspective view of a treatment needle device with a shell according to an embodiment of the present invention.
[0030] In the figure, 1-first conductive part; 11-main body section; 12-transition section; 2-second conductive part; 3-heating part; 4-isolation component; 5-positioning support component; 6-first insulating shell; 7-second insulating shell; 8-first conductive spring; 9-second conductive spring; 10-temperature measuring unit. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. However, the embodiments described below are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0032] Please refer to Figure 1 and 2 The treatment needle device of this embodiment includes a needle body extending longitudinally. The needle body is generally tubular and has a needle tip located distally and a needle tail located proximally. The needle body includes a first conductive part 1 near the needle tail, a second conductive part 2 near the needle tip, and a heating part 3 disposed within the second conductive part. The second conductive part 2 is a hollow structure with an internal cavity. It can be seen that in this embodiment, the first conductive part 1 and the second conductive part 2, which are connected to each other, constitute the general outer contour of the needle body. The distal end of the first conductive part 1 (i.e., the end near the second conductive part 2) is insulatedly connected to the proximal end of the second conductive part 2, and the distal end of the first conductive part 1 is inserted into the proximal end of the heating part 3. Specifically, both the first conductive part 1 and the second conductive part 2 can be made of stainless steel or other suitable conductive materials.
[0033] It should be noted that in this embodiment, "proximal end" refers to the end that is closer to the operator during the normal use of the treatment needle device, while "distal end" refers to the end that is farther away from the operator; and the first conductive part 1 is closer to the operator than the second conductive part 2 and the heating part 3.
[0034] Please refer to Figure 1 and 2 The heating element 3 is installed inside the cavity of the second conductive element 2 and is electrically connected to the second conductive element 2, and the heating element 3 is in thermal contact with the second conductive element 2 at least at the needle tip of the needle body. Specifically, as shown... Figure 2 As clearly shown, the second conductive part 2 can be made into a narrower diameter at the needle tip, so that the second conductive part 2 is in close contact with the heating part 3 inside, thereby forming a stable electrical connection and thermal contact. In other embodiments, the close contact between the second conductive part 2 and the heating part 3 can also be achieved by increasing the diameter of the heating part 3 at the needle tip.
[0035] It is understandable that the distal end of the first conductive part 1 can be configured to facilitate insertion into the proximal end of the heating part 3 and improve the connection stability between the two, such as a pointed structure.
[0036] In actual operation, the working principle of the treatment needle device of this embodiment is as follows: the heating part 3 is connected to the first conductive part 1 and the second conductive part 2 respectively, and the first conductive part 1 and the second conductive part 2 are insulated from each other. The first conductive part 1 and the second conductive part 2 are suitable for connection to an external power source. Therefore, when the external power source is turned on, the first conductive part 1, the second conductive part 2, the heating part 3 and the external power source together form a conductive circuit. The first conductive part 1 and the second conductive part 2 serve as the conductors of the circuit, while the heating part 3 serves as the load of the circuit. The current flows through the first conductive part 1, the heating part 3 and the second conductive part 2 in sequence, completing the heating of the heating part 3. At the same time, the tip of the needle also rises synchronously with the temperature of the distal end of the heating part 3, thereby realizing tip heating.
[0037] By directly heating the heating part 3, the heating part 3 and the needle tip located at its distal end can be rapidly heated, thus achieving the purpose of tip heating. This avoids the problems of energy loss and low heating efficiency in traditional treatment needles that are heated by electricity at the tail end, thereby effectively improving the therapeutic effect of the treatment needle device.
[0038] In this embodiment, the heating element 3 is made of graphite. Since graphite has excellent electrical and thermal conductivity and is easily processed into small shapes, using graphite as the material for the heating element 3 further improves the heating efficiency and therapeutic effect of the treatment needle device.
[0039] Please continue to refer to Figure 1 An insulating member 4 is provided at the connection between the first conductive part 1 and the second conductive part 2 to electrically insulate the first conductive part 1 and the second conductive part 2, thereby preventing a short circuit between the first conductive part 1 and the second conductive part 2 after the power is turned on. The material of the insulating member 4 can be one or more insulating materials selected from insulating plastic, insulating adhesive, and insulating tape. In this embodiment, insulating plastic is used.
[0040] Specifically, the insulating member 4 is sleeved on the outer periphery of the distal end of the first conductive part 1 and surrounds the inner periphery of the proximal end of the second conductive part 2 to form an insulated connection between the first conductive part 1 and the second conductive part 2. In this embodiment, the connection between the first conductive part 1 and the second conductive part 2 can be configured as a step, that is, the first conductive part 1 includes a main body segment 11 and a transition segment 12 sequentially from proximal to distal along its length direction, wherein the outer diameter of the main body segment 11 is larger than the outer diameter of the transition segment 12; the insulating member 4 is arranged around the distal end of the main body segment 11 and extends along the length direction of the transition segment 12, covering the outer periphery of the transition segment 12, and filling the gaps formed between the second conductive part 2 and the main body segment 11 and the transition segment 12 respectively, thereby forming a good insulation between the first conductive part 1 and the second conductive part 2, ensuring the normal operation of the treatment needle device after power is turned on.
[0041] Please continue to refer to Figure 1 The cavity of the second conductive part 2 is provided with a positioning support 5. The positioning support 5 is generally tubular and is sleeved on the outside of the heating part 3 at least at the connection between the heating part 3 and the first conductive part 1. The proximal end of the positioning support 5 is fixedly connected to the distal end of the first conductive part 1 (for example, sleeved on the pointed structure at the distal end of the first conductive part 1). The distal end of the positioning support 5 can be located near the contact point between the heating part 3 and the second conductive part 2.
[0042] Specifically, the positioning support 5 in this embodiment can be made of polytetrafluoroethylene (PTFE). Since PTFE is easily drawn into an ultra-fine tubular structure while maintaining stable mechanical properties, the PTFE tube can maintain stable performance when the treatment needle device needs to handle high temperature or rapid temperature changes, avoiding structural deformation or performance degradation due to temperature effects, and strengthening the connection stability between the first conductive part 1 and the heating part 3.
[0043] Please refer to Figure 2 The treatment needle device of this embodiment also includes a first insulating shell 6, specifically, the first insulating shell 6 is a plastic inner tube. The first insulating shell 6 is sleeved outside the first conductive part 1 and the second conductive part 2, and at least the needle tip of the needle body extends out of the first insulating shell 6; specifically, as shown... Figure 2 As clearly shown, the second conductive part 2 and the heating part 3 installed inside it extend at least partially out of the first insulating housing 6.
[0044] Please continue to refer to Figure 2 The treatment needle device of this embodiment also includes a second insulating shell 7 sleeved outside the first insulating shell 6. Specifically, the second insulating shell 7 is a plastic outer tube. The second insulating shell 7 fits tightly with the first insulating shell 6, thereby providing good support for the first insulating shell 6.
[0045] Please refer to Figure 3 and Figure 4 The treatment needle device of this embodiment also includes a first conductive spring 8 and a second conductive spring 9. The first conductive spring 8 contacts the first conductive part 1 to electrically connect the first conductive part 1 to one pole (e.g., the positive pole) of an external power source, and the second conductive spring 9 contacts the second conductive part 2 to electrically connect the second conductive part 2 to the other pole (e.g., the negative pole) of an external power source.
[0046] In this embodiment, the first insulating housing 6 is provided with receiving cavities (not shown in the figure) for accommodating the first conductive spring 8, the second conductive spring 9, and the temperature measuring spring 81, respectively, so as to fix the corresponding springs in the first insulating housing 6. The first insulating housing 6 not only serves to fix the springs, but also prevents the outer surfaces of the first conductive part 1 and the second conductive part 2, except for the spring contact points, from contacting the springs, effectively avoiding short circuits and thus improving the safety of the device.
[0047] Please continue to refer to Figure 3 and Figure 4 The treatment needle device of this embodiment also includes a temperature measuring unit 10, which further includes a temperature measuring spring disposed on the first insulating shell 6 and a thermocouple fixed to the temperature measuring spring. The temperature measuring spring is in contact with the second conductive part 2.
[0048] Since temperature is a key factor affecting the working state, material stability, and durability of the treatment needle device, monitoring its operating temperature is particularly important. After the treatment needle device is activated, the second conductive part 2 heats up due to electricity, transferring heat to the temperature-sensing spring. This allows the thermocouple to detect the temperature change of the spring. The thermocouple is further connected to an external temperature-sensing circuit. The temperature-sensing circuit detects the temperature signal from the thermocouple and converts it into an electrical signal. After processing the signal, the circuit outputs the temperature information, thus achieving real-time temperature detection and feedback. This allows the operator to adjust the operating temperature according to the actual situation.
[0049] The needle body is configured to be inserted into or withdrawn from the first insulating housing 6 and the second insulating housing 7 by longitudinal movement. When the needle body is inserted into the first insulating housing 6 and the second insulating housing 7, the first conductive part 1 and the second conductive part 2 respectively contact the first conductive spring 8 and the second conductive spring 9, while the temperature measuring spring of the temperature measuring unit 10 contacts the second conductive part 2, thereby allowing the treatment needle device to function normally. The first conductive spring 8, the second conductive spring 9, and the temperature measuring spring are preferably elastic to ensure good electrical contact, especially after repeated insertion and withdrawal of the needle body.
[0050] Although this application has been described with reference to specific embodiments, those skilled in the art should recognize that the above embodiments are only used to illustrate this application, and various equivalent changes or substitutions can be made without departing from the spirit of this application. Therefore, any changes or modifications to the above embodiments within the scope of the essential spirit of this application will fall within the scope of this application.
Claims
1. A therapeutic needle device comprising a needle body extending longitudinally, the needle body having a needle tip portion located at a distal end and a needle tail portion located at a proximal end, characterized in that: The needle body includes a first conductive portion near the needle tail, a second conductive portion near the needle tip, and a heating portion disposed within the second conductive portion. The end of the first conductive part is insulated from the end of the second conductive part, and the end of the first conductive part near the second conductive part is electrically connected to the heating part. The second conductive part has a hollow cavity, and the heating part is installed in the cavity and electrically connected to the second conductive part. The heating part is in thermal contact with the second conductive part at least at the needle tip of the needle body. The first conductive part and the second conductive part are adapted to be connected to an external power source and together with the heating part to form a conductive circuit, so that the heating part is heated by the current flowing through the conductive circuit, thereby heating the second conductive part, so as to heat at least the tip of the needle body.
2. The treatment needle device according to claim 1, characterized in that, The heating element is made of graphite material.
3. The treatment needle device according to claim 1, characterized in that, The first conductive portion and the second conductive portion together generally form the outer contour of the needle body. An isolation member is provided at the connection between the first conductive portion and the second conductive portion to electrically insulate the first conductive portion and the second conductive portion.
4. The treatment needle device according to claim 1, characterized in that, It also includes a first insulating shell, which is sleeved outside the first conductive part and the second conductive part, and at least the needle tip of the needle body extends out of the first insulating shell.
5. The treatment needle device according to claim 4, characterized in that, It also includes a first conductive spring and a second conductive spring; The first conductive spring is disposed on the first insulating shell and in contact with the first conductive part, so as to electrically connect the first conductive part to one pole of an external power source; The second conductive spring is disposed on the first insulating shell and contacts the second conductive part to electrically connect the second conductive part to the other pole of an external power source.
6. The treatment needle device according to claim 4, characterized in that, It also includes a temperature measuring unit, which includes a temperature measuring spring disposed on the first insulating shell and a thermocouple fixed to the temperature measuring spring, wherein the temperature measuring spring is in thermal contact with the second conductive part.
7. The treatment needle device according to any one of claims 4-6, characterized in that, It also includes a second insulating shell, which is sleeved outside the first insulating shell, and at least the needle tip of the needle body extends out of the second insulating shell.
8. The treatment needle device according to claim 7, characterized in that, The needle is configured to be able to be inserted into or pulled out of the first insulating housing and the second insulating housing by moving along the longitudinal direction.
9. The treatment needle device according to claim 1, characterized in that, It also includes a positioning support member disposed in the cavity of the second conductive part. The positioning support member is sleeved on the heating part at least at the connection between the heating part and the first conductive part, and the positioning support member is fixedly connected to the end of the first conductive part near the second conductive part to strengthen the connection between the heating part and the first conductive part. The end of the first conductive part near the second conductive part is inserted into the heating part in the positioning support member to achieve an electrical connection with the heating part.
10. The treatment needle device according to claim 9, characterized in that, The positioning support is made of polytetrafluoroethylene.