Cold and hot mixed treatment surgical instrument
By designing a surgical instrument for combined hot and cold therapy, and integrating a temperature control mechanism and electrode head, the problems of limited functionality and inaccurate temperature monitoring in existing instruments are solved, enabling multifunctional surgical operations and improving surgical efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHENGDU ANJIECHANG MEDICAL TECH CO LTD
- Filing Date
- 2025-01-16
- Publication Date
- 2026-04-24
AI Technical Summary
Existing surgical instruments have limited functionality, require frequent replacements, increase surgical time and space usage, and lack accurate temperature monitoring, which may harm patients.
Design a surgical instrument for combined cryotherapy and thermotherapy, which combines a temperature control mechanism and an electrode head to achieve temperature regulation and real-time monitoring of the electrode head, and performs multifunctional surgical operations by combining high-frequency energy and cryotherapy.
It reduces the frequency of instrument changes, improves surgical efficiency, reduces space occupation, achieves precise energy output, reduces patient harm, and shortens recovery time.
Smart Images
Figure CN224155744U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical devices, and more specifically, to a surgical instrument for combined hot and cold therapy. Background Technology
[0002] Currently, in clinical surgical treatments such as lung surgery, different instruments and energy devices are typically used for ablation, resection, vaporization, coagulation, and cryotherapy. Existing surgical instruments are often single-function, with each instrument generally performing only one function. To perform different procedures, it is necessary to switch between multiple surgical instruments during the operation.
[0003] The inventors discovered in their research that existing surgical instruments for lung surgery have at least the following drawbacks:
[0004] Frequent changes to instruments and energy devices not only increase surgical time but also occupy a significant amount of operating room space, while also increasing the workload of instrument management, cleaning, and disinfection. Furthermore, existing instruments lack precise temperature monitoring of the lesion site during treatment, making it difficult to achieve controllable energy output and potentially causing significant harm to the patient. Utility Model Content
[0005] The objectives of this invention include, for example, providing a surgical instrument for combined hot and cold therapy, which can shorten the time required for frequent changes of surgical instruments and improve surgical efficiency; by reducing the number of surgical instruments, the space occupied in the operating room is reduced, and the workload of surgical instrument management and cleaning and disinfection is improved; at the same time, it can also obtain the electrode head temperature in real time, enabling precise energy output and good treatment results.
[0006] The embodiments of this utility model can be implemented as follows:
[0007] In a first aspect, this utility model provides a surgical instrument for combined hot and cold therapy, comprising:
[0008] The device comprises a handle, a sheath, an electrode head, a temperature control mechanism, and a temperature detector; the proximal end of the sheath is connected to the handle, and the electrode head is connected to the distal end of the sheath; the temperature control mechanism is mounted on the handle and partially located inside the sheath, and is used to heat or cool the electrode head; the temperature detector is mounted inside the electrode head and is used to acquire the temperature of the electrode head.
[0009] In an optional embodiment, the temperature control mechanism includes a high-frequency electrical connector and a conductive tube, both of which are mounted on the handle. The high-frequency electrical connector is electrically connected to the conductive tube. The conductive tube passes through the sheath and is electrically connected to the electrode head.
[0010] In an optional embodiment, the electrode head is provided with an expansion cavity with an opening that is connected to the lumen of the sheath; the distal end of the conductive tube extends into the expansion cavity, the diameter of the expansion cavity being larger than the inner diameter of the conductive tube; the proximal end of the conductive tube is provided with a gas supply connector for introducing high-pressure carbon dioxide.
[0011] In an optional embodiment, the temperature control mechanism further includes a positioning ring with conductive properties, the positioning ring being installed inside the expansion cavity and electrically connected to the electrode head, the conductive tube passing through the positioning ring; the positioning ring is provided with a return section communicating with the expansion cavity, the return section communicating with the lumen of the sheath; the temperature detector or a wire connected to the temperature detector passing through the positioning ring.
[0012] In an optional embodiment, the reflux section is configured as a groove on the outer ring surface of the positioning ring, and the groove opening contacts the inner wall surface of the electrode head.
[0013] In an optional embodiment, there are multiple reflux sections, which are arranged at intervals in the circumferential direction of the positioning ring; the temperature detector or the wire connected to the temperature detector passes through one of the multiple reflux sections.
[0014] In an optional embodiment, the conductive tube and the sheath cooperate to define an annular reflux cavity, which is connected to the expansion cavity; the handle is provided with an exhaust channel, which is connected to the annular reflux cavity.
[0015] In an optional embodiment, the handle is equipped with an exhaust connector that connects to the exhaust passage.
[0016] In an optional embodiment, the conductive tube passes through the exhaust channel.
[0017] In an optional embodiment, the temperature detector includes a temperature probe and a wire, the temperature probe being located inside the electrode head, the wire being connected to the temperature probe, and the wire passing through the sheath and extending out of the handle.
[0018] The beneficial effects of this utility model embodiment include, for example:
[0019] In summary, the cryo-thermal hybrid treatment surgical instrument provided in this embodiment, through its use in conjunction with the electrode head, allows the temperature control mechanism to adjust the electrode head temperature in real time, enabling the temperature to rise or fall. When the electrode head temperature rises, it can perform ablation, resection, vaporization, and coagulation operations. When the electrode head temperature drops, it can perform cryotherapy. By incorporating a temperature detector at the electrode head, real-time temperature monitoring of the electrode head and the lesion site can be achieved during the procedure. This monitoring data is then fed back to the main unit of the temperature control mechanism for real-time energy output parameter matching, achieving controllable and detectable energy output, reducing harm to the patient, improving treatment quality, and facilitating earlier patient discharge. Attached Figure Description
[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of a cryotherapy surgical instrument according to an embodiment of this application;
[0022] Figure 2 This is a cross-sectional schematic diagram of a cryo-thermal hybrid treatment surgical instrument according to an embodiment of this application;
[0023] Figure 3 for Figure 2 A magnified view of a portion of the image;
[0024] Figure 4 This is a schematic diagram of the handle according to an embodiment of this application;
[0025] Figure 5 This is a schematic diagram of the electrode head according to an embodiment of this application;
[0026] Figure 6 This is a schematic diagram of the positioning ring according to an embodiment of this application.
[0027] icon:
[0028] 100-Handle; 101-First hole; 102-Second hole; 103-Exhaust channel; 110-Exhaust connector; 111-Exhaust port; 200-Sheath; 201-Annular reflux chamber; 300-Electrode head; 301-Expansion chamber; 400-Temperature control mechanism; 410-High frequency electrical connector; 420-Conductive tube; 430-Positioning ring; 431-Positioning hole; 432-Groove; 500-Temperature detector; 510-Temperature probe; 520-Wire. Detailed Implementation
[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0032] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product is usually placed during use, they are only for the convenience of describing this utility model 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 this utility model.
[0033] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0034] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.
[0035] Lung surgery typically involves the use of various instruments and energy devices for procedures such as ablation, resection, vaporization, coagulation, and cryotherapy. Because existing surgical instruments are often limited in function, with each instrument typically performing only one function, multiple instruments must be switched during the procedure to perform different operations. This not only makes the surgical process cumbersome and inefficient, but also results in a large number of instruments occupying significant operating room space and hindering instrument management. Furthermore, effective temperature monitoring of the surgical instruments is difficult, leading to poor treatment outcomes.
[0036] In view of this, the designers have provided a surgical instrument for combined hot and cold therapy, which is easy to operate, efficient, and effective; at the same time, the surgical instrument is easy to manage.
[0037] Please refer to Figures 1-6 This embodiment provides a surgical instrument for combined hot and cold therapy, including a handle 100, a sheath 200, an electrode head 300, a temperature control mechanism 400, and a temperature detector 500. The proximal end of the sheath 200 is connected to the handle 100, and the electrode head 300 is connected to the distal end of the sheath 200. The temperature control mechanism 400 is installed in the handle 100 and partially located inside the sheath 200. The temperature control mechanism 400 is used to heat or cool the electrode head 300. The temperature detector 500 is installed inside the electrode head 300 and is used to obtain the temperature of the electrode head 300.
[0038] As described above, the operating principle of the hot and cold hybrid treatment surgical instrument in this embodiment is as follows:
[0039] The electrode head 300 can be inserted into the lesion site using an endoscope. The temperature of the electrode head 300 can be adjusted using the temperature control mechanism 400 according to the surgical needs. For example, the electrode head 300 can be heated to output high-frequency energy, enabling ablation, resection, vaporization, and coagulation of the lesion tissue. Conversely, the temperature control mechanism 400 can also be used to cool the electrode head 300, allowing for cryotherapy of the lesion tissue at lower temperatures. In this way, the temperature control mechanism 400, in conjunction with the electrode head 300, can adjust the temperature of the electrode head 300 as needed to achieve different surgical treatment objectives, eliminating the need for frequent insertion and removal of multiple surgical instruments, significantly reducing surgical difficulty and improving efficiency. The reduced number of surgical instruments also simplifies management by requiring less space. Meanwhile, during the surgery, the temperature of the electrode head 300 is obtained in real time by the temperature detector 500. This allows the energy output of the temperature control mechanism 400 to be adjusted according to the temperature feedback from the temperature detector 500, making it less likely for high temperature to damage the patient's body, reducing harm to the patient, improving treatment effectiveness, and shortening the recovery time.
[0040] The following embodiments illustrate the details of the hot and cold hybrid treatment surgical instrument of this application by way of example.
[0041] Please refer to Figure 1 and Figure 4In this embodiment, optionally, the handle 100 is provided with a first hole 101 and a second hole 102, which are perpendicularly arranged and connected. One end of the first hole 101 is located at the proximal end of the handle 100, and the other end of the first hole 101 is located at the distal end of the handle 100. One end of the second hole 102 is connected to the first hole 101, and the connection point between the two is located between the proximal and distal ends of the handle 100.
[0042] Meanwhile, an exhaust connector 110 is installed near the first hole 101. The exhaust connector 110 is connected to the first hole 101. The exhaust connector 110 can be a tubular structure. An exhaust port 111 is provided on the tube wall of the exhaust connector 110. There can be multiple exhaust ports 111, which can be arranged at intervals around the axis of the exhaust connector 110. Each exhaust port 111 can be a circular hole.
[0043] In this embodiment, optionally, the proximal end of the sheath 200 is fixed to the distal end of the handle 100, and the lumen of the sheath 200 communicates with the first hole 101. It should be understood that the proximal end of the sheath 200 can directly connect to the distal end of the handle 100, or the proximal end of the sheath 200 can be inserted into the first hole 101 of the handle 100. The connection method between the sheath 200 and the handle 100 is flexible and easy to assemble. When the sheath 200 is inserted into the first hole 101, the contact area between the sheath 200 and the handle 100 is large, resulting in a firm and reliable fit.
[0044] It is worth noting that the sheath 200 and the handle 100 can be fixed together by means of bonding, welding, screwing, etc. Both the handle 100 and the sheath 200 can be made of plastic material, which is convenient for injection molding.
[0045] Please refer to Figure 1 and Figure 5 In this embodiment, optionally, the electrode head 300 is provided with an expansion cavity 301 with an opening. The opening is located at the proximal end of the electrode head 300, and the proximal end of the electrode head 300 is connected to the distal end of the sheath tube 200, so that the expansion cavity 301 communicates with the lumen of the sheath tube 200 through the opening. The electrode head 300 can be welded, bonded, or threaded to the sheath tube 200, and the fixing method between the electrode head 300 and the sheath tube 200 is flexible. In addition, in order to reduce the damage to tissues caused by the step, after the electrode head 300 and the sheath tube 200 are connected, the connection position between the electrode head 300 and the sheath tube 200 is smoothly transitioned, that is, the outer peripheral surface of the electrode head 300 and the outer peripheral surface of the sheath tube 200 are approximately located on the same cylindrical surface, without forming a step structure.
[0046] It should be understood that the electrode head 300 is made of conductive material, which allows current to pass through, thereby enabling high-frequency energy output.
[0047] Please refer to Figures 1-3In this embodiment, optionally, the temperature control mechanism 400 includes a high-frequency electrical connector 410, a conductive tube 420, and a positioning ring 430. The high-frequency electrical connector 410 is installed inside and extends out of the second hole 102 of the handle 100. The high-frequency electrical connector 410 is used for electrical connection with the socket of the energy device, and the energy device can output high-frequency current through the high-frequency electrical connector 410. The high-frequency electrical connector 410 is electrically connected to the conductive tube 420. For example, the conductive tube 420 can be directly inserted into the high-frequency electrical connector 410, with the outer wall of the conductive tube 420 in contact with the high-frequency electrical connector 410, resulting in a large contact area and good conductivity. The conductive tube 420 is a hollow tube, which is inserted into the sheath 200, the first hole 101, and the exhaust connector 110. The tube wall of the conductive tube 420 has a gap with the inner wall of the sheath 200 to form an annular reflux cavity 201. The wall of the conductive tube 420 and the inner wall of the exhaust connector 110 are spaced to form an annular exhaust channel 103. The proximal end of the annular return cavity 201 is connected to the distal end of the exhaust channel 103, and the exhaust channel 103 is connected to the exhaust port 111.
[0048] Please refer to Figure 6 Meanwhile, the positioning ring 430 is made of conductive material. The positioning ring 430 can be circular, with a positioning hole 431 in its center. The positioning hole 431 can be located within the circular hole and is coaxial with the positioning ring 430. Multiple grooves 432 are also provided on the outer ring surface of the positioning ring 430. Each groove 432 can be an arc-shaped through groove, and the grooves 432 are evenly spaced along the circumference of the positioning ring 430. The positioning ring 430 is embedded in the expansion cavity 301 of the electrode head 300, and the openings of the grooves 432 are sealed by the inner wall of the electrode head 300. A conductive tube 420 passes through the positioning hole 431, with its distal end extending into the expansion cavity 301 and its proximal end extending out of the exhaust connector 110. Furthermore, the inner diameter of the conductive tube 420 is smaller than the diameter of the expansion cavity 301. The conductive tube 420 is electrically connected to the positioning ring 430, and the positioning ring 430 is electrically connected to the electrode head 300. When the electrode head 300 is fixed in the sheath tube 200, the proximal side of the groove 432 is connected to the annular reflux cavity 201, and the distal side of the groove 432 is connected to the expansion cavity 301. Thus, the annular reflux cavity 201 is connected to the expansion cavity 301 through the groove 432.
[0049] With this design, when high-frequency energy needs to be input into the electrode head 300 for ablation, resection, vaporization, coagulation, or other procedures, the high-frequency connector 410 is electrically connected to the energy device. The energy device outputs a high-frequency current, which is then transmitted through the high-frequency connector 410 to the conductive tube 420, then through the conductive tube 420 to the positioning ring 430, and finally to the electrode head 300, enabling high-frequency energy output. When the electrode head 300 is needed for cryotherapy, the conductive tube 420 is connected to a high-pressure carbon dioxide source. High-pressure carbon dioxide is input into the expansion chamber 301 through the conductive tube 420. Due to the large inner diameter of the expansion chamber 301, the high-pressure carbon dioxide expands and cools down after entering the expansion chamber 301 from the conductive tube 420, thus cooling the electrode head 300. This utilizes the Joule-Thomson principle, allowing the cooled electrode head 300 to perform cryotherapy. After expansion, carbon dioxide can flow from groove 432 to annular reflux chamber 201, then enter exhaust channel 103, and be discharged from exhaust port 111.
[0050] Optionally, the temperature detector 500 includes a temperature probe 510 and a wire 520. The temperature probe 510 is located inside the electrode head 300, and the wire 520 is connected to the temperature probe 510. The wire 520 passes through the sheath 200, the exhaust channel 103, and the exhaust connector 110, and extends beyond the proximal end of the exhaust connector 110. The wire 520 makes efficient use of the lumen of the sheath 200 and is compactly arranged. Furthermore, the wire 520 or the temperature probe 510 passes through one of the multiple grooves 432, thereby placing the temperature probe 510 within the expansion cavity 301 of the electrode head 300, resulting in more accurate temperature data. A plug can be provided at the proximal end of the wire 520, which can be connected to an energy device to provide power transmission, and the information acquired by the temperature probe 510 can be stored in the energy device.
[0051] It should be understood that the cryo-thermal hybrid treatment surgical instrument provided in this embodiment, through the cooperation of the temperature control mechanism 400 and the electrode head 300, can adjust the temperature of the electrode head 300 as needed, thereby realizing surgical treatment in different scenarios. Frequent instrument changes are unnecessary during surgery, simplifying the surgical procedure, reducing the management of instruments and equipment in the operating room, and lowering the workload of instrument cleaning and disinfection. It saves time switching surgical instruments, shortens surgical time, and improves treatment efficiency. Simultaneously, the combination of high-frequency energy and the freezing principle can effectively inhibit scar hyperplasia in the bronchi.
[0052] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A cold-heat mixed treatment surgical instrument, characterized in that, include: The device comprises a handle (100), a sheath (200), an electrode head (300), a temperature control mechanism (400), and a temperature detector (500); the proximal end of the sheath (200) is connected to the handle (100), and the electrode head (300) is connected to the distal end of the sheath (200); the temperature control mechanism (400) is mounted on the handle (100) and partially located inside the sheath (200), and the temperature control mechanism (400) is used to heat or cool the electrode head (300); the temperature detector (500) is mounted inside the electrode head (300) and is used to obtain the temperature of the electrode head (300).
2. The surgical instrument for combined hot and cold therapy according to claim 1, characterized in that: The temperature control mechanism (400) includes a high-frequency electrical connector (410) and a conductive tube (420). Both the high-frequency electrical connector (410) and the conductive tube (420) are installed on the handle (100). The high-frequency electrical connector (410) is electrically connected to the conductive tube (420). The conductive tube (420) is inserted into the sheath (200) and is electrically connected to the electrode head (300).
3. The surgical instrument for combined hot and cold therapy according to claim 2, characterized in that: The electrode head (300) is provided with an expansion cavity (301) with an opening, the opening being connected to the lumen of the sheath (200); the distal end of the conductive tube (420) extends into the expansion cavity (301), the diameter of the expansion cavity (301) being larger than the inner diameter of the conductive tube (420); the proximal end of the conductive tube (420) is provided with a gas supply connector, the gas supply connector being used to introduce high-pressure carbon dioxide.
4. The surgical instrument for combined hot and cold therapy according to claim 3, characterized in that: The temperature control mechanism (400) further includes a positioning ring (430) with conductive properties. The positioning ring (430) is installed in the expansion cavity (301) and electrically connected to the electrode head (300). The conductive tube (420) passes through the positioning ring (430). The positioning ring (430) is provided with a return section that communicates with the expansion cavity (301). The return section communicates with the lumen of the sheath tube (200). The temperature detector (500) or the wire (520) connected to the temperature detector (500) passes through the positioning ring (430).
5. The surgical instrument for combined hot and cold therapy according to claim 4, characterized in that: The return section is configured as a groove (432) on the outer ring surface of the positioning ring (430), and the groove (432) is in contact with the inner wall surface of the electrode head (300).
6. The surgical instrument for combined hot and cold therapy according to claim 5, characterized in that: The number of reflux sections is multiple, and the multiple reflux sections are arranged at intervals in the circumferential direction of the positioning ring (430); the temperature detector (500) or the wire (520) connected to the temperature detector (500) passes through one of the multiple reflux sections.
7. The surgical instrument for combined hot and cold therapy according to any one of claims 3-6, characterized in that: The conductive tube (420) and the sheath (200) cooperate to define an annular reflux cavity (201), which is connected to the expansion cavity (301); the handle (100) is provided with an exhaust channel (103), which is connected to the annular reflux cavity (201).
8. The surgical instrument for combined hot and cold therapy according to claim 7, characterized in that: An exhaust connector (110) connected to the exhaust passage (103) is installed on the handle (100).
9. The surgical instrument for combined hot and cold therapy according to claim 7, characterized in that: The conductive tube (420) is inserted into the exhaust channel (103).
10. The surgical instrument for combined hot and cold therapy according to claim 1, characterized in that: The temperature detector (500) includes a temperature probe (510) and a wire (520). The temperature probe (510) is located inside the electrode head (300). The wire (520) is connected to the temperature probe (510). The wire (520) passes through the sheath (200) and extends out of the handle (100).