Disposable microwave ablation needle
By introducing a guide sleeve and filter in the microwave ablation needle, the problem of slow cooling fluid flow speed and easy clogging is solved, achieving more stable coolant flow and more efficient microwave ablation treatment.
Patent Information
- Application Number
- CN202420361506.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-27
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-02-27
AI Technical Summary
During the use of existing microwave ablation needles, the cooling water flows slowly and the internal flow pipeline is narrow, which is prone to blockage due to tiny impurities in the coolant, which affects the use effect.
A disposable microwave ablation needle is designed, including a housing, ablation needle, an ablation needle, a guide sleeve, a filter mesh and a solenoid valve. The guide sleeve is used to move the ablation needle body in a direction, the filter is located in the cooling chamber to filter impurities in the coolant, and the solenoid valve is used to adjust the flow rate of the coolant with a temperature sensor.
Through the directional movement of the guide sleeve and the filtering function of the filter screen, the blockage problems caused by impurities of coolant are avoided, the fluidity and stability of the coolant are improved, and the normal operation of the microwave ablation needle is ensured.
Smart Images
Figure CN222604668U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of microwave ablation treatment equipment, in particular to a disposable microwave ablation needle. Background Art
[0002] Microwave ablation has rapidly developed into a major method in clinical tumor treatment. It can directly puncture the microwave needle into the tumor site under the guidance of modern images such as B-ultrasound or CT. The polar molecules in the tissue move at high speed under the action of the microwave field, rub against each other to generate heat, and quickly heat up in the tumor. When the temperature rises to about 60 degrees, the cancer cell protein denatures and coagulates, leading to irreversible necrosis, and inactivates the tumor in situ. It has the remarkable characteristics of minimally invasive, precise, efficient and low toxic and side effects. During the use of existing microwave ablation needles, the cooling water flows slowly inside the needle body, and the flow channel inside the microwave ablation needle is narrow. When tiny impurities enter the cooling water, it is easy to cause blockage, affecting the subsequent use effect. Utility Model Content
[0003] The purpose of the utility model is to provide a disposable microwave ablation needle to solve the above technical solution.
[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0005] A disposable microwave ablation needle, characterized in that it includes a shell, an ablation needle body is arranged in the shell, the ablation needle body is connected to an ablation needle head, a guide sleeve is arranged on the part of the ablation needle body located in the shell, a filter screen is arranged between the guide sleeve and the shell, the filter screen is located in the cooling cavity of the shell, a fixed frame is arranged outside the filter screen, the fixed frame is welded to the guide sleeve, and the ablation needle body moves in the shell along the setting direction of the guide sleeve.
[0006] The utility model is further arranged that the cooling chamber comprises a liquid inlet chamber and a liquid outlet chamber, the liquid inlet chamber is connected with a liquid inlet joint, the liquid outlet chamber is connected with a liquid outlet joint, and the liquid inlet joint is connected with a solenoid valve.
[0007] The utility model is further provided that a plurality of temperature sensors are arranged on the ablation needle, and the temperature sensors are evenly distributed on the side surfaces of the ablation needle.
[0008] The utility model is further arranged that the number of the filter screens arranged in the liquid inlet cavity is 3.
[0009] The utility model is further arranged that the number of the filter screens arranged in the liquid outlet cavity is 3.
[0010] The utility model is further configured that a protective shell connected to the housing is arranged outside the ablation needle, and the ablation needle is extended out of the protective shell for use.
[0011] The beneficial effects of the utility model are as follows: a guide sleeve is provided for the directional movement of the ablation needle body and the ablation needle head, thereby playing a guiding role; secondly, a filter screen is provided for filtering impurities in the coolant to avoid clogging of the pipeline; the guide sleeve and the fixed frame of the filter screen are fixedly connected by welding to improve the stability of the filter screen; in addition, a solenoid valve is provided to adjust the flow rate of the coolant and cooperate with the temperature detection of the temperature sensor, thereby adjusting different flow rates according to different temperatures. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:
[0013] Figure 1 It is a side view of an embodiment of the utility model.
[0014] 10. Shell; 20. Ablation needle body; 30. Ablation needle; 40. Guide sleeve; 50. Filter; 60. Cooling chamber; 601. Liquid outlet chamber; 602. Liquid inlet chamber; 70. Liquid inlet connector; 80. Liquid outlet connector; 90. Solenoid valve; 100. Temperature sensor; 110. Protective shell; DETAILED DESCRIPTION
[0015] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.
[0016] like Figure 1 As shown, the utility model is a disposable microwave ablation needle, comprising a shell 10, wherein an ablation needle body 20 is arranged in the shell 10, wherein the ablation needle body 20 is connected to an ablation needle head 30, and a guide sleeve 40 is arranged at the portion of the ablation needle body 20 located in the shell 10, and a filter screen 50 is arranged between the guide sleeve 40 and the shell 10, wherein the filter screen 50 is located in a cooling cavity 60 of the shell, and a fixed frame is arranged outside the filter screen 50, wherein the fixed frame is welded to the guide sleeve 40, and the ablation needle body 20 moves in the shell 10 along the setting direction of the guide sleeve 40.
[0017] Preferably, the cooling chamber 60 includes a liquid inlet chamber 602 and a liquid outlet chamber 601 , the liquid inlet chamber 602 is connected to a liquid inlet joint 70 , the liquid outlet chamber 601 is connected to a liquid outlet joint 80 , and the liquid inlet joint 70 is connected to a solenoid valve 90 .
[0018] Preferably, a plurality of temperature sensors 100 are disposed on the ablation needle 30 , and the temperature sensors 100 are evenly distributed on the side surface of the ablation needle 30 .
[0019] Preferably, the number of the filter screens 50 disposed in the liquid inlet cavity 602 is three.
[0020] Preferably, the number of the filter screens 50 disposed in the liquid outlet cavity 601 is three.
[0021] Preferably, a protective shell 110 connected to the housing 10 is disposed outside the ablation needle 30 , and the ablation needle 30 is extended out of the protective shell 110 for use.
[0022] In the utility model, a guide sleeve 40 is provided for the directional movement of the ablation needle body 20 and the ablation needle head 30, and plays a guiding role. Secondly, a filter screen 50 is provided for filtering impurities in the coolant to avoid clogging of the pipeline. The guide sleeve 40 and the fixed frame of the filter screen 50 are fixedly connected by welding to improve the stability of the filter screen 50. In addition, a solenoid valve 90 is provided to adjust the flow rate of the coolant to cooperate with the temperature detection of the temperature sensor 100, and different flow rates can be adjusted according to different temperatures.
[0023] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.
[0024] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.
[0025] The above description shows and describes several preferred embodiments of the utility model, but as mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.
Claims
1. A disposable microwave ablation needle, characterized in that: It includes a shell, an ablation needle body is arranged in the shell, the ablation needle body is connected to an ablation needle head, a guide sleeve is arranged on the part of the ablation needle body located in the shell, a filter screen is arranged between the guide sleeve and the shell, the filter screen is located in the cooling cavity of the shell, a fixed frame is arranged outside the filter screen, the fixed frame is welded to the guide sleeve, and the ablation needle body moves in the shell along the setting direction of the guide sleeve.
2. A disposable microwave ablation needle according to claim 1, characterized in that: The cooling chamber comprises a liquid inlet chamber and a liquid outlet chamber, the liquid inlet chamber is connected to a liquid inlet joint, the liquid outlet chamber is connected to a liquid outlet joint, and the liquid inlet joint is connected to a solenoid valve.
3. The disposable microwave ablation needle according to claim 1, characterized in that: The ablation needle is provided with a plurality of temperature sensors, and the temperature sensors are evenly distributed on the side surfaces of the ablation needle.
4. A disposable microwave ablation needle as claimed in claim 2, characterized in that: The number of the filter screens arranged in the liquid inlet cavity is 3.
5. The disposable microwave ablation needle according to claim 2, characterized in that: The number of the filter screens arranged in the liquid outlet cavity is 3.
6. The disposable microwave ablation needle according to claim 1, characterized in that: A protective shell connected to the housing is arranged outside the ablation needle, and the ablation needle extends out of the protective shell for use.