Radio frequency closed catheter with model storage function

Abstract

The utility model provides a radio frequency closed catheter with a model storage function, which relates to the technical field of medical instruments and comprises a catheter body and a handle component, the handle component comprises a shell, a circuit board is arranged in the shell, a temperature measuring chip is arranged on the circuit board, and the catheter body comprises an insertion section and a non-insertion section. A heating element is arranged outside one end, far away from the shell, of the insertion section, the heating element is connected with the circuit board, a thermocouple is arranged in the insertion section, one end of the thermocouple is in contact with the heating element, and the other end of the thermocouple is connected with the circuit board. According to the utility model, the real-time temperature of the cold end of the thermocouple can be measured through the temperature measuring chip, and cold end compensation can be conveniently carried out on the thermocouple according to the measured real-time temperature of the cold end of the thermocouple, so that the accuracy of the thermocouple for measuring the temperature of the heating element is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a radio frequency closed catheter with a model storage function. Background Art

[0002] Radiofrequency occlusion catheters are highly effective, safe, and non-invasive medical devices for treating varicose veins and other venous conditions. They typically consist of a catheter, a radiofrequency generator, a switch, a Luer adapter, a connecting cable, and a cable connector. The catheter is a flexible tube that is inserted into the patient's body and delivers radiofrequency energy into the vein. The radiofrequency generator controls the output of radiofrequency energy and can be adjusted as needed.

[0003] For example, Chinese patent application number CN221285889U discloses an intravenous radiofrequency closure catheter comprising an insertion section, a handle assembly, and a cable assembly. The insertion section comprises a treatment section and a non-treatment section, the treatment section comprising a ball head, a PI tube, a support PEEK tube, an FEP heat shrink tubing, a heating wire, and a thermocouple. The support PEEK tube is disposed on the outside of the PI tube. The heating wire and the thermocouple are disposed on the outside and inside of the support PEEK tube, respectively. The support PEEK tube is provided with at least one single-sided hole extending through the inside and outside of the tube. The thermocouple's temperature sensing probe extends through the single-sided hole and contacts the starting end of a double-row, parallel-wound heating wire. The FEP heat shrink tubing is disposed on the outside of the heating wire. The heating wire of the present invention is arranged in a double-row, parallel-wound manner, which improves energy output density while maintaining good flexibility at the front end of the catheter, making it easier to pass during surgery. Furthermore, the thermocouple is disposed between the heating wires, and the thermocouple temperature sensing probe is in close contact with the heating wires, providing more direct thermal feedback and facilitating timely and accurate feedback.

[0004] The thermoelectric potential of a thermocouple depends not only on the hot-end temperature but also on the cold-end temperature. Only when the cold-end temperature remains constant can the thermoelectric potential accurately reflect the hot-end temperature. Since thermocouples operate in different environments, the cold-end temperature will also vary accordingly. The above solution does not measure the cold-end temperature of the thermocouple, and changes in the cold-end temperature can affect the accuracy of the thermocouple temperature measurement. Utility Model Content

[0005] The utility model provides a radiofrequency closed catheter with a model storage function, which is used to solve the technical problem that the current radiofrequency closed catheter does not measure the cold end temperature of the thermocouple and the change of the cold end temperature will affect the accuracy of the thermocouple temperature measurement.

[0006] To solve the above technical problems, the utility model discloses a radio frequency closed catheter with a model storage function, comprising: a catheter body and a handle assembly, the handle assembly comprising a shell, a circuit board disposed inside the shell, a temperature measurement chip disposed on the circuit board, the catheter body comprising an insertion section and a non-insertion section, one end of the non-insertion section of the catheter body being connected to the shell, a heating element being disposed on the outside of an end of the insertion section away from the shell, the heating element being connected to the circuit board, a thermocouple being disposed inside the insertion section, one end of the thermocouple being in contact with the heating element, and the other end of the thermocouple being connected to the circuit board.

[0007] Preferably, a data storage chip is provided on the circuit board, and the data storage chip stores the model of the catheter body.

[0008] Preferably, scale lines are evenly arranged on the outer surface of the insertion section.

[0009] Preferably, an indication section is provided at one end of the insertion section close to the non-insertion section.

[0010] Preferably, the non-insertion section is close to an adjustment block at one end of the insertion section, and the inner wall of the adjustment block is slidably connected to the outer portion of the non-insertion section.

[0011] Preferably, a threaded hole is provided inside the adjustment block, a pressure rod is provided in the threaded hole, the pressure rod is perpendicular to the non-insertion section, an external thread is provided on the outer wall of the pressure rod, the outer wall of the pressure rod is threadedly connected to the inner wall of the threaded hole, the pressure rod extends away from one end of the non-insertion section to the outside of the threaded hole and a knob is provided.

[0012] Preferably, a Luer adapter is provided outside the shell, and one end of the Luer adapter is connected to the catheter body.

[0013] Preferably, a connecting cable is provided outside the shell, one end of the connecting cable is connected to the circuit board, and the other end of the connecting cable is provided with an instrument cable connector, which adopts a 7-core connector.

[0014] Preferably, a catheter sheath is provided at the connection between the shell and the non-insertion section, and the catheter sheath is provided on the outside of the non-insertion section.

[0015] Preferably, a switch is provided on the circuit board, and a button corresponding to the switch is provided on the housing.

[0016] The technical solution of the present invention has the following advantages: The present invention provides a radiofrequency closed catheter with a model storage function, which relates to the field of medical device technology and includes a catheter body and a handle assembly. The handle assembly includes a housing, a circuit board disposed within the housing, and a temperature measurement chip disposed on the circuit board. The catheter body includes an insertion section and a non-insertion section. One end of the non-insertion section of the catheter body is connected to the housing. A heating element is disposed externally at one end of the insertion section away from the housing, the heating element is connected to the circuit board. A thermocouple is disposed within the insertion section, one end of the thermocouple contacts the heating element, and the other end of the thermocouple is connected to the circuit board. In the present invention, the temperature measurement chip can measure the real-time temperature of the cold end of the thermocouple. Based on the measured real-time temperature of the cold end of the thermocouple, cold-end compensation of the thermocouple is facilitated, thereby improving the accuracy of the thermocouple's measurement of the temperature of the heating element.

[0017] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be achieved and obtained by the devices particularly pointed out in the written description and the drawings.

[0018] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of a radiofrequency closed catheter with a model storage function according to the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the regulating block in the utility model;

[0022] Figure 3 This is a schematic diagram of the internal structure of the adjustment block in the utility model.

[0023] In the figure: 1. Catheter body; 2. Shell; 3. Heating element; 4. Scale line; 5. Indicator segment; 6. Adjustment block; 7. Pressure rod; 8. Knob; 9. Luer adapter; 10. Connecting cable; 11. Instrument cable connector; 12. Catheter sheath; 13. Button. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0025] In addition, in the present invention, descriptions such as "first" and "second" are only used for descriptive purposes and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but this must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0026] Example 1

[0027] The present invention provides a radiofrequency closed catheter with a model storage function, such as Figure 1-Figure 3 As shown, it includes: a catheter body 1 and a handle assembly, the handle assembly includes a shell 2, a circuit board is arranged in the shell 2, and a temperature measurement chip is arranged on the circuit board. The catheter body 1 includes an insertion section and a non-insertion section. One end of the non-insertion section of the catheter body 1 is connected to the shell 2, and a heating element 3 is arranged on the outside of the end of the insertion section away from the shell 2. The heating element 3 is connected to the circuit board. A thermocouple is arranged in the insertion section, one end of the thermocouple is in contact with the heating element 3, and the other end of the thermocouple is connected to the circuit board.

[0028] The working principle and beneficial effects of the above technical solution are as follows: the catheter body 1 includes an insertion section and a non-insertion section, the insertion section is used to insert into the patient's position to be treated, and then the heating element 3 is started. The heating element 3 can use a heating wire, and the heating element 3 can heat the position to be treated for treatment. When the heating element 3 is working, the thermocouple arranged inside the catheter body 1 contacts the heating element 3 through the temperature sensing probe, thereby measuring the temperature of the heating element 3, providing a reference for adjusting the temperature. The cold end of the thermocouple is connected to the temperature measuring chip on the circuit board. The temperature measuring chip uses an existing temperature measuring chip. The temperature measurement chip can measure the real-time temperature of the cold end of the thermocouple. Based on the measured real-time temperature of the cold end of the thermocouple, it is convenient to perform cold end compensation on the thermocouple. The cold end compensation can compensate for the cold end temperature of the thermocouple through a cold end compensation module. The cold end compensation module is arranged in the shell 2. The cold end compensation module is connected to the cold end of the thermocouple. The cold end compensation module adopts an existing device and will not be described here. By measuring the cold end temperature of the thermocouple, it can provide a reference for cold end compensation, which is convenient for temperature compensation of the cold end of the thermocouple, thereby improving the accuracy of the thermocouple's temperature measurement of the heating element 3.

[0029] Example 2

[0030] On the basis of the above embodiment 1, a data storage chip is provided on the circuit board, and the data storage chip stores the model of the catheter body 1 .

[0031] The working principle and beneficial effects of the above technical solution are as follows: the model of the catheter body 1 is stored in the data storage chip. After installing different catheter bodies 1, the circuit board is connected to the host, and the host can obtain the model of the catheter body 1. The host stores the maximum power parameters that the model can withstand, and outputs corresponding power for different catheter body 1 models, so that the output power does not exceed the maximum power that the model can withstand, greatly improving the safety of operation and output.

[0032] Example 3

[0033] On the basis of Example 1 or 2, as Figure 1 As shown, scale marks 4 are evenly arranged on the outer surface of the insertion section.

[0034] The working principle and beneficial effects of the above technical solution are as follows: the insertion length of the insertion section can be intuitively judged through the scale line 4, which facilitates the adjustment of the position of the insertion section and improves the reliability of treatment.

[0035] Example 4

[0036] On the basis of any one of Examples 1-3, Figure 1 As shown, an indication section 5 is provided at one end of the insertion section close to the non-insertion section.

[0037] The working principle and beneficial effects of the above technical solution are as follows: the length of the heating element 3 is set to be various, and the length of the heating element 3 is different, so the indication interval of the indication segment 5 is different, such as Figure 1 As shown, the length of the insertion section is L1, the length of the heating element 3 is L2, and the length of the indicating section 5 is L3. When the heating element 3 is 3 cm, the indicating spacing of the indicating section 5 is correspondingly set to 2.5 cm. When the heating element 3 is 7 cm, the indicating spacing of the indicating section 5 is correspondingly set to 6.5 cm. The indicating section 5 can be used to distinguish the length of the heating element 3, which is convenient for operation.

[0038] Example 5

[0039] On the basis of any one of Examples 1-4, Figure 1-Figure 3 As shown, the non-insertion section is close to an adjustment block 6 at one end of the insertion section, and the inner wall of the adjustment block 6 is slidably connected to the outer portion of the non-insertion section;

[0040] A threaded hole is provided inside the adjusting block 6, and a pressure rod 7 is provided in the threaded hole. The pressure rod 7 is perpendicular to the non-insertion section. An external thread is provided on the outer wall of the pressure rod 7. The outer wall of the pressure rod 7 is threadedly connected to the inner wall of the threaded hole. The pressure rod 7 extends away from one end of the non-insertion section to the outside of the threaded hole and a knob 8 is provided.

[0041] The working principle and beneficial effects of the above technical solution are as follows: the adjustment block 6 can slide outside the non-insertion section to adjust the position of the adjustment block 6. The adjustment block 6 plays a role of limiting. The user can not only judge the model of the catheter body 1 according to the position of the adjustment block 6, but also control the insertion length of the insertion section to prevent the insertion section from being inserted too deeply and causing harm to the patient, thereby improving the safety of the use of the catheter body 1. After the position of the adjustment block 6 is adjusted, the knob 8 is turned, and the knob 8 drives the pressure rod 7 to rotate in the threaded hole, so that the pressure rod 7 contacts the outer wall of the non-insertion section. At this time, the position of the adjustment block 6 is fixed to prevent people from accidentally touching and sliding and causing position changes, thereby improving accuracy. By rotating the knob 8 in the opposite direction, the pressure rod 7 can be separated from the outer wall of the non-insertion section, and the position of the adjustment block 6 can be readjusted to improve flexibility.

[0042] Example 6

[0043] On the basis of any one of Examples 1-5, Figure 1 As shown, a Luer adapter 9 is provided outside the housing 2 , and one end of the Luer adapter 9 is connected to the catheter body 1 .

[0044] The working principle and beneficial effects of the above technical solution are: the Luer adapter 9 can be connected to an external device, so as to facilitate the supply of liquid such as saline into the catheter body 1.

[0045] Example 7

[0046] On the basis of any one of Examples 1-6, Figure 1 As shown, a connecting cable 10 is provided outside the housing 2 , one end of the connecting cable 10 is connected to the circuit board, and the other end of the connecting cable 10 is provided with an instrument cable connector 11 , which is a 7-core connector.

[0047] The working principle and beneficial effects of the above technical solution are as follows: the circuit board can be connected to an external radiofrequency ablation device through the instrument connection connector at one end of the connecting cable 10, and the radiofrequency ablation device outputs radiofrequency energy to achieve energy and signal transmission.

[0048] Example 8

[0049] On the basis of any one of Examples 1-7, Figure 1 As shown, a catheter sheath 12 is provided at the connection between the housing 2 and the non-insertion section, and the catheter sheath 12 is sleeved on the outside of the non-insertion section.

[0050] The working principle and beneficial effects of the above technical solution are as follows: the catheter sheath 12 can protect the connection between the shell 2 and the non-insertion section, improve the reliability of the connection between the shell 2 and the non-insertion section, and extend the service life of the catheter body 1. The outer part of the shell 2 adopts an ergonomic design, which is convenient for users to grasp.

[0051] Example 9

[0052] On the basis of any one of Examples 1-8, Figure 1 As shown, a switch is provided on the circuit board, and a button 13 corresponding to the switch is provided on the housing 2.

[0053] The working principle and beneficial effects of the above technical solution are as follows: when the circuit board is powered on, the switch can be turned on and off by pressing the button 13, thereby controlling the heating element 3 to be turned on or off, thereby realizing the control function.

[0054] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations 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, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0055] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0056] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with this field, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A radiofrequency closed catheter with a model storage function, characterized in that: include: A catheter body (1) and a handle assembly, the handle assembly comprising a housing (2), a circuit board being arranged in the housing (2), a temperature measuring chip being arranged on the circuit board, the catheter body (1) comprising an insertion section and a non-insertion section, one end of the non-insertion section of the catheter body (1) being connected to the housing (2), a heating element (3) being arranged outside an end of the insertion section away from the housing (2), the heating element (3) being connected to the circuit board, a thermocouple being arranged in the insertion section, one end of the thermocouple being in contact with the heating element (3), and the other end of the thermocouple being connected to the circuit board.

2. The radiofrequency sealing catheter with model storage function according to claim 1, characterized in that: A data storage chip is provided on the circuit board, and the data storage chip stores the model of the catheter body (1).

3. The radiofrequency sealing catheter with model storage function according to claim 1, characterized in that: Scale lines (4) are evenly arranged on the outer surface of the insertion section.

4. The radiofrequency sealing catheter with model storage function according to claim 1, characterized in that: An indication section (5) is provided at one end of the insertion section close to the non-insertion section.

5. The radiofrequency sealing catheter with model storage function according to claim 1, characterized in that: The non-insertion section is close to an adjustment block (6) at one end of the insertion section, and the inner wall of the adjustment block (6) is slidably connected to the outside of the non-insertion section.

6. The radiofrequency sealing catheter with model storage function according to claim 5, characterized in that: A threaded hole is provided inside the adjusting block (6), a pressure rod (7) is provided in the threaded hole, the pressure rod (7) is perpendicular to the non-insertion section, an outer wall of the pressure rod (7) is provided with an external thread, the outer wall of the pressure rod (7) is threadedly connected to the inner wall of the threaded hole, and the pressure rod (7) extends away from one end of the non-insertion section to the outside of the threaded hole and is provided with a knob (8).

7. The radiofrequency sealing catheter with model storage function according to claim 1, characterized in that: A Luer adapter (9) is provided outside the housing (2), and one end of the Luer adapter (9) is communicated with the catheter body (1).

8. The radiofrequency sealing catheter with model storage function according to claim 1, characterized in that: A connecting cable (10) is provided outside the housing (2), one end of the connecting cable (10) is connected to the circuit board, and an instrument cable connector (11) is provided at the other end of the connecting cable (10), and the instrument cable connector (11) adopts a 7-core connector.

9. The radiofrequency sealing catheter with model storage function according to claim 1, characterized in that: A catheter sheath (12) is provided at the connection between the shell (2) and the non-insertion section, and the catheter sheath (12) is sleeved on the outside of the non-insertion section.

10. The radiofrequency sealing catheter with model storage function according to claim 1, characterized in that: A switch is provided on the circuit board, and a button (13) corresponding to the switch is provided on the housing (2).

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