A temperature-controlled soft tissue high-frequency welding instrument

Abstract

The present invention discloses a temperature-controlled soft tissue high-frequency welding instrument, which belongs to the field of soft tissue welding technology. The instrument comprises a handle and a front end portion, wherein an execution portion is provided on the front end portion, and the execution portion comprises an electrocoagulation mechanism and a negative pressure generating mechanism; the electrocoagulation mechanism comprises a holder assembly, a pen unit, and a snap assembly. During surgery, heat energy at the pen unit is transferred in real time to a bimetallic structure in the holder assembly through a heat-inducing structure. When the pen unit portion is overheated and reaches the operating temperature of the bimetallic structure, the deformed bimetallic structure drives a release structure to eject the card structure originally clipped in the slot. Subsequently, under the elastic tension of the elastic contraction structure, the overheated pen unit is quickly retracted into the negative pressure chamber during surgery, thereby effectively avoiding thermal damage to the soft tissue when hemostasis is performed on the soft tissue at the wound during surgery, which is beneficial to the patient's postoperative recovery.

Description

Technical Field

[0001] The present invention relates to the technical field of soft tissue welding, and more particularly to a temperature-controlled soft tissue high-frequency welding instrument. Background Art

[0002] A high-frequency electrocoagulation pen is a type of high-frequency soft tissue welding instrument. It uses human protein cells as the welding material. To use the pen, first connect the pen's cable to the power output port of the high-frequency device. Then, enter all welding parameters into the device and adjust the current to different intensities for different tissues to achieve temperature control. The high-frequency current emitted by the pen rapidly raises the temperature of the wound tissue to 60°C-100°C, causing protein denaturation and coagulation, thereby sealing blood vessels and lymphatic vessels, preventing blood outflow and achieving hemostasis.

[0003] When the existing high-frequency electrocoagulation pen is actually used, it is easy for the pen tip to overheat due to the long operation time. In addition, during the operation, the doctor who is highly focused usually finds it difficult to detect the abnormal temperature of the pen tip in time. This makes it easy for the doctor to cause thermal damage to the patient's wound tissue when using the high-frequency electrocoagulation pen to stop bleeding, which affects the patient's postoperative recovery.

[0004] In view of this, we propose a temperature-controlled soft tissue high-frequency welding instrument. Summary of the Invention

[0005] Technical problem to be solved: The purpose of the present invention is to provide a temperature-controlled soft tissue high-frequency welding instrument to solve the technical problems raised in the above-mentioned background technology.

[0006] Technical solution: The technical solution of the present invention provides a temperature-controlled soft tissue high-frequency welding instrument, comprising a handle portion and a front end portion connected to the end of the handle portion, the front end portion being provided with an execution portion, the execution portion comprising an electrocoagulation mechanism and a negative pressure generating mechanism, and the front end portion being provided with a negative pressure chamber and a sliding chamber respectively;

[0007] The electrocoagulation mechanism includes a holder assembly located in the sliding chamber, a pen head unit located in the negative pressure chamber, and a snap assembly arranged on the side wall of the front end portion;

[0008] The card holder assembly includes a base unit, which is provided with a card slot, in which a tripping structure and a C-shaped bimetallic structure are respectively provided. The base unit is also provided with an elastic contraction structure connected to the sliding chamber;

[0009] The pen tip unit includes an end structure and a heat-conducting structure, and one end of the heat-conducting structure is connected to the end structure, and the other end is connected to the bimetallic structure;

[0010] The snap-on assembly includes a clamping head structure that is slidably inserted on the side wall of the front end portion and can be movably clamped into the interior of the clamping slot, and a sliding variable resistance structure that is electrically connected to the negative pressure generating mechanism;

[0011] The sliding resistance variable structure comprises a moving end module connected to the clamping head structure and a static end module connected to the side wall of the front end portion.

[0012] As an optional solution of the technical solution of the document of the present invention, the base unit includes a base body sliding in the sliding chamber, and the card slot is provided on the base body;

[0013] An extension seat is connected to the base body, and a straight groove adapted to the extension seat and connected to the sliding chamber is opened on the side wall of the front end portion corresponding to the position of the extension seat. The end of the extension seat away from the base body passes through the straight groove and slides in the straight groove;

[0014] The elastic contraction structure is a tension spring located in the sliding chamber, one end of the tension spring is connected to the end of the base body, and the other end is connected to the end of the sliding chamber.

[0015] As an optional solution of the technical solution of the present invention, the bimetallic strip structure includes a C-shaped bimetallic strip in a C-shaped structure;

[0016] One end of the C-shaped bimetallic strip is connected to the bottom wall of the slot, and the other end is connected to an outer insulation sleeve. A heat-conducting metal strip is connected to the inner cavity of the outer insulation sleeve, and the heat-conducting metal strip is connected to the surface of the C-shaped bimetallic strip on the side close to the C-shaped bimetallic strip.

[0017] As an optional solution of the technical solution of the document of the present invention, the tripping structure includes a pushing head located in the card slot;

[0018] A limit slider is connected to the side wall of the ejector head, and a first return spring is connected to the limit slider;

[0019] A guide longitudinal groove is provided on the side wall of the card slot, and the end of the limit slider away from the push head extends into the guide longitudinal groove, and the limit slider slides in the guide longitudinal groove;

[0020] One end of the first return spring away from the limiting slider is connected to the end of the guide longitudinal groove;

[0021] When the first return spring in the tripping structure is in a fully compressed state, the end of the ejecting head is flush with the surface of the base body.

[0022] As an optional solution of the technical solution of the document of the present invention, the tip structure includes a pen head and a pen body located in the negative pressure chamber, and the end of the pen body is connected to the heat-insulating tailstock;

[0023] The end of the pen head is connected to a heat-conducting fixing seat, and the end of the heat-conducting fixing seat away from the pen head is connected to the end of the heat-insulating tail seat away from the pen shaft. The heat-conducting fixing seat is also connected to a temperature sensor.

[0024] One end of the pen shaft away from the heat-insulating tailstock passes through the negative pressure chamber into the sliding chamber and is connected with the base body in the base unit.

[0025] As an optional solution of the technical solution of the present invention, the heat-conducting structure includes a flexible insulation layer, and a heat-conducting metal wire is provided inside the flexible insulation layer;

[0026] One end of the flexible insulation layer is connected to the end of the outer insulation sleeve, and the other end is respectively inserted into the base body, the pen holder and the heat-insulating tail seat, and is connected to the end of the heat-conducting fixing seat;

[0027] One end of the heat-conducting metal wire passes through the side wall of the flexible heat-insulating layer and is connected to the heat-conducting metal sheet, and the other end is connected to the end of the corresponding heat-conducting fixing seat.

[0028] As an optional solution of the technical solution of the document of the present invention, the clamping head structure includes a clamping head portion, and the end of the clamping head portion is connected to a second return spring;

[0029] The clamping portion is slidably inserted on the side wall of the front end portion, and one end of the clamping portion away from the second return spring can be movably buckled into the interior of the clamping slot.

[0030] As an optional solution of the technical solution of the present invention, the static end module includes an insulating cylinder seat connected to the side wall of the front end portion and arranged around the outer periphery of the clamping head portion;

[0031] The outer surface of the insulating cylinder seat is spirally wound with a resistance wire;

[0032] A vertical slot is provided on the side wall of the insulating cylinder seat;

[0033] The insulating cylinder seat is also connected to a fixed terminal;

[0034] The dynamic end module includes a horizontal insulating rod connected to the side wall of the card head. A passive elastic piece is connected to the end of the horizontal insulating rod away from the card head, and the free end of the passive elastic piece passes through the vertical slot and is tightly attached to the surface of the resistance wire.

[0035] As an optional solution of the technical solution of the present invention, the snap assembly further includes an outer cover shell connected to the side wall of the front end portion and covering the outside of the clamping portion and the insulating cylinder seat;

[0036] A pull handle is slidably inserted into the outer cover at a position corresponding to the clamping head, and one end of the pull handle close to the clamping head is connected to the end of the clamping head;

[0037] One end of the second return spring away from the clamping portion is connected to the end of the inner cavity of the outer cover shell.

[0038] As an optional solution of the technical solution of the present invention, the negative pressure generating mechanism includes an outer flow guide cover, the bottom of the outer flow guide cover is connected to a support seat, the input end of the outer flow guide cover is connected to a negative pressure hose, and the end of the negative pressure hose away from the outer flow guide cover is connected to the side wall of the front end portion and is in communication with the negative pressure chamber;

[0039] A negative pressure fan is connected to the opening at the output end of the outer guide cover;

[0040] The resistance wire, passive spring and fixed terminal in the static end module are all electrically connected to the negative pressure fan in the negative pressure generating mechanism.

[0041] Beneficial effects: One or more technical solutions provided in the technical solution of the present invention have at least the following technical effects or advantages: 1. During the operation, the heat energy at the pen head unit is transferred to the bimetallic structure in the holder assembly in real time through the heat-conducting structure. When the pen head unit is overheated and reaches the operating temperature of the bimetallic structure, the deformed bimetallic structure drives the tripping structure to push out the card structure originally clamped in the slot. Subsequently, under the elastic tension of the elastic contraction structure, the overheated pen head unit can be quickly retracted into the negative pressure chamber during the operation, thereby effectively avoiding thermal damage to the soft tissue at the wound when stopping bleeding during the operation, which is beneficial to the patient's postoperative recovery.

[0042] 2. During the operation, when the pen head unit overheats and triggers the pen head unit to quickly retract into the negative pressure chamber during the operation, it serves as a reminder, so that the doctor can understand the status of the pen head unit at the first time during the operation, and can quickly shut down the electrocoagulation pen unit when the pen head unit overheats to achieve cooling of the electrocoagulation pen unit.

[0043] 3. The smoke generated during the process of stopping bleeding on the soft tissue of the wound by the heated pen head unit is continuously sucked into the negative pressure chamber under the suction of the negative pressure fan in the negative pressure generating mechanism, so as to avoid the smoke generated during the electrocoagulation hemostasis process obstructing the doctor's vision, making it difficult for the doctor to accurately judge the part of the wound to be hemostatic, and helping the doctor to complete the hemostasis work on the soft tissue of the wound more efficiently and accurately.

[0044] 4. When the overheated pen head unit retracts into the negative pressure chamber, under the action of the negative pressure suction of the negative pressure generating mechanism, the airflow flowing into the negative pressure chamber will gather near the pen head unit, thereby improving the efficiency of heat exchange, thereby helping to enhance the cooling effect of the overheated pen head unit, improving the cooling efficiency, thereby shortening the cooling time of the pen head unit, and allowing the device with overheated pen head unit to be put into use again quickly. In addition, when the pen head unit overheats and causes the deformed bimetallic strip structure to drive the tripping structure to eject the card head structure originally clamped in the card slot, the card head structure drives the passive spring in the dynamic end module to The surface of the resistance wire in the static end module slides, which increases the number of turns of the coil between the fixed terminal and the passive spring piece, increases the resistance value, and causes the output power of the negative pressure fan to decrease accordingly. When the card head structure is completely detached from the card slot and retracts into the negative pressure chamber under the elastic tension of the elastic contraction structure, under the limiting action of the base body, the distance between the passive spring piece and the fixed terminal no longer changes, so that the power of the negative pressure generating mechanism is reduced during the retraction of the overheated pen head unit into the negative pressure chamber. This ensures the cooling effect of the overheated pen head unit while saving energy.

[0045] 5. The temperature of the pen head is indirectly monitored in real time through the temperature sensor connected to the heat-conducting fixing seat. The temperature sensor then transmits the detection signal to the external main controller. When the pen head unit retracts into the negative pressure chamber, the medical staff can always understand the temperature of the pen head in the pen head unit through the numerical value displayed on the main controller display. When the temperature of the pen head drops to an appropriate range, the base unit located in the sliding chamber is driven to move through the extension seat. When the base body in the base unit is against the end of the sliding chamber, the clamping head is aligned with the slot, and under the action of the second reset spring force, the clamping head in the clamping head structure is quickly clamped into the slot, realizing the clamping fixation of the base unit, making it convenient for the operator to readjust the retracted pen head unit to the extended state, thereby facilitating the continuation of subsequent electrocoagulation hemostasis work. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0047] Figure 2 For the present invention Figure 1 A partial enlarged schematic diagram of part A.

[0048] Figure 3 It is a side view of the overall structure of the present invention.

[0049] Figure 4 For the present invention Figure 3 A partial enlarged schematic diagram of part B.

[0050] Figure 5It is a schematic diagram of the structure inside the front end portion of the present invention.

[0051] Figure 6 For the present invention Figure 5 A partial enlarged schematic diagram of part D in the middle.

[0052] Figure 7 For the present invention Figure 6 A partial enlarged schematic diagram of part E in the middle.

[0053] Figure 8 For the present invention Figure 7 A partial enlarged schematic diagram of part G in the middle.

[0054] Figure 9 For the present invention Figure 6 A partial enlarged schematic diagram of part F in the middle.

[0055] Figure 10 For the present invention Figure 5 A partial enlarged schematic diagram of part C in the middle.

[0056] Figure 11 It is a partial cross-sectional view of the pen holder, the heat-insulating tailstock and the heat-conducting fixing seat in the present invention.

[0057] Figure 12 For the present invention Figure 11 A partial enlarged schematic diagram of part H in the middle.

[0058] Description of the numbers in the figure:

[0059] 10. Handle;

[0060] 20. front end;

[0061] 301. Pen body; 302. Outer cover; 303. Negative pressure hose; 304. Outer guide cover; 305. Heat-conducting fixing seat; 306. Pen head; 307. Heat-insulating tail seat; 308. Negative pressure fan; 309. Tension spring; 310. Insulating cylinder seat; 311. Resistance wire; 312. Base body; 313. Extension seat; 315. Limiting slider; 316. Pulling handle; 318. Clamping head; 319. Pushing head; 320. C-type bimetallic strip; 321. Outer insulation sleeve; 322. Heat-conducting metal sheet; 323. Flexible insulation layer; 324. Heat-conducting metal wire; 325. Passive spring; 326. Fixed terminal; 327. Temperature sensor. DETAILED DESCRIPTION

[0062] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0063] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0064] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0065] Reference Figure 1 、 Figure 3 、 Figure 5 and Figure 6 The embodiment of the present invention provides a temperature-controlled soft tissue high-frequency welding instrument, comprising a handle portion 10 and a front end portion 20 connected to the end of the handle portion 10. The front end portion 20 is provided with an execution portion, which includes an electrocoagulation mechanism and a negative pressure generating mechanism. A negative pressure chamber and a sliding chamber are respectively provided inside the front end portion 20, and one end of the negative pressure chamber is connected to the atmosphere.

[0066] The electrocoagulation mechanism includes a holder assembly located in the sliding chamber, a pen head unit located in the negative pressure chamber, and a snap assembly provided on the side wall of the front end portion 20;

[0067] The card holder assembly includes a base unit, which is provided with a card slot, in which a tripping structure and a C-shaped bimetallic structure are respectively provided. The base unit is also provided with an elastic contraction structure connected to the sliding chamber;

[0068] The pen tip unit includes an end structure and a heat-conducting structure, and one end of the heat-conducting structure is connected to the end structure, and the other end is connected to the bimetallic structure;

[0069] The snap assembly includes a clamping head structure that is slidably inserted on the side wall of the front end portion 20 and can be movably clamped into the interior of the clamping slot, and a sliding variable resistance structure that is electrically connected to the negative pressure generating mechanism;

[0070] The sliding resistance structure includes a moving end module connected to the clamp structure and a static end module connected to the side wall of the front end portion 20 .

[0071] During the operation, the heat energy at the pen head unit is transferred to the bimetallic structure in the card holder assembly in real time through the heat-conducting structure. When the pen head unit is overheated and reaches the operating temperature of the bimetallic structure, the deformed bimetallic structure drives the tripping structure to push out the card head structure that was originally clamped in the card slot. Then, under the elastic tension of the elastic contraction structure, the overheated pen head unit can be quickly retracted into the negative pressure chamber during the operation, thereby effectively avoiding thermal damage to the soft tissue at the wound when stopping bleeding during the operation, which is beneficial to the patient's postoperative recovery.

[0072] During the operation, when the pen head unit overheats and triggers the pen head unit to quickly retract into the negative pressure chamber during the operation, it serves as a reminder, so that the doctor can understand the status of the pen head unit at the first time during the operation, and can quickly shut down the electrocoagulation pen unit if the pen head unit overheats to achieve cooling of the electrocoagulation pen unit.

[0073] Reference Figure 5 and Figure 6 , an embodiment of the present invention provides a temperature-controlled soft tissue high-frequency welding instrument, wherein the base unit includes a base body 312 that slides in a sliding chamber, and a card slot is provided on the base body 312;

[0074] An extension seat 313 is connected to the base body 312. A straight groove is formed on the side wall of the front end portion 20 at a position corresponding to the extension seat 313, which is adapted to the extension seat 313 and connected to the sliding chamber. The end of the extension seat 313 away from the base body 312 passes through the straight groove and slides within the straight groove.

[0075] The elastic contraction structure is a tension spring 309 located in the sliding chamber, and one end of the tension spring 309 is connected to the end of the base body 312, and the other end is connected to the end of the sliding chamber.

[0076] Reference Figures 5 to 7 , an embodiment of the present invention provides a temperature-controlled soft tissue high-frequency welding instrument, the clamping head structure includes a clamping head 318, and the end of the clamping head 318 is connected to a second return spring;

[0077] The clamping portion 318 is slidably inserted into the side wall of the front end portion 20 , and one end of the clamping portion 318 away from the second return spring can be movably locked into the inside of the clamping slot.

[0078] Reference Figure 5 、 Figure 6 and Figure 9 The embodiment of the present invention provides a temperature-controlled soft tissue high-frequency welding instrument, wherein the static end module includes an insulating cylinder seat 310 connected to the side wall of the front end portion 20 and arranged around the outer periphery of the clamping portion 318;

[0079] The outer spiral of the insulating cylinder seat 310 is wound with a resistance wire 311;

[0080] A vertical slot is provided on the side wall of the insulating cylinder seat 310;

[0081] The insulating cylinder seat 310 is also connected to a fixed terminal 326;

[0082] The active end module includes a horizontal insulating rod connected to the side wall of the clamping portion 318 , and a passive elastic piece 325 is connected to one end of the horizontal insulating rod away from the clamping portion 318 , and the free end of the passive elastic piece 325 passes through the vertical slot and is tightly attached to the surface of the resistance wire 311 .

[0083] Reference Figure 1 、 Figure 3 、 Figure 5 、 Figure 6 , an embodiment of the present invention provides a temperature-controlled soft tissue high-frequency welding instrument, the snap assembly further includes an outer cover shell 302 connected to the side wall of the front end portion 20 and covering the clamping portion 318 and the outside of the insulating cylinder seat 310;

[0084] A pull handle 316 is slidably inserted into the outer housing 302 at a position corresponding to the clamping portion 318 , and one end of the pull handle 316 close to the clamping portion 318 is connected to the end of the clamping portion 318 ;

[0085] One end of the second return spring away from the clamping portion 318 is connected to the inner end of the outer housing 302 .

[0086] Reference Figure 1 、 Figure 3 and Figure 4 The embodiment of the present invention provides a temperature-controlled soft tissue high-frequency welding instrument, wherein the negative pressure generating mechanism includes an outer flow guide cover 304, a support base is connected to the bottom of the outer flow guide cover 304, a negative pressure hose 303 is connected to the input end of the outer flow guide cover 304, and the end of the negative pressure hose 303 away from the outer flow guide cover 304 is connected to the side wall of the front end portion 20 and is in communication with the negative pressure chamber;

[0087] A negative pressure fan 308 is connected to the output opening of the outer air guide cover 304;

[0088] The resistance wire 311 , the passive spring 325 and the fixed terminal 326 in the static end module are all electrically connected to the negative pressure fan 308 in the negative pressure generating mechanism.

[0089] The smoke generated during the process of stopping bleeding on the soft tissue at the wound by the heated pen head unit is continuously sucked into the negative pressure chamber under the suction of the negative pressure fan 308 in the negative pressure generating mechanism, so as to avoid the smoke generated during the electrocoagulation hemostasis process obstructing the doctor's vision, making it difficult for the doctor to accurately judge the part of the wound to be hemostatically controlled, and helping the doctor to complete the hemostasis work on the soft tissue at the wound more efficiently and accurately.

[0090] Reference Figures 5 to 8 The embodiment of the present invention provides a temperature-controlled soft tissue high-frequency welding instrument, wherein the bimetallic strip structure includes a C-shaped bimetallic strip 320, wherein the C-shaped bimetallic strip 320 is a C-shaped bimetallic strip, and the operating temperature of the bimetallic strip is 100°C to 160°C.

[0091] One end of the C-shaped bimetallic strip 320 is connected to the bottom wall of the slot, and the other end is connected to an outer insulation sleeve 321. The outer insulation sleeve 321 is made of a high-temperature resistant insulation material. A heat-conducting metal strip 322 is connected to the inner cavity of the outer insulation sleeve 321. The side of the heat-conducting metal strip 322 closest to the C-shaped bimetallic strip 320 is connected to the surface of the C-shaped bimetallic strip 320. The outer insulation sleeve 321 insulates the heat-conducting metal strip 322.

[0092] Reference Figures 5 to 7 , an embodiment of the present invention provides a temperature-controlled soft tissue high-frequency welding instrument, wherein the tripping structure includes a pushing head 319 located in a card slot;

[0093] The side wall of the ejecting head 319 is connected to a limit slider 315 , and the limit slider 315 is connected to a first return spring;

[0094] A guide longitudinal groove is provided on the side wall of the card slot, and the end of the limit slider 315 away from the push-up head 319 extends into the guide longitudinal groove, and the limit slider 315 slides in the guide longitudinal groove;

[0095] One end of the first return spring away from the limiting slider 315 is connected to the end of the guide longitudinal groove;

[0096] When the first return spring in the tripping structure is in a fully compressed state, the end of the pushing head 319 is flush with the surface of the base body 312 .

[0097] Reference Figure 1 , Figure 2 , Figure 10 and Figure 11The embodiment of the present invention provides a temperature-controlled soft tissue high-frequency welding instrument, wherein the tip structure includes a pen head 306 and a pen shaft 301 located in a negative pressure chamber. The end of the pen shaft 301 is connected to a heat-insulating tailstock 307, which is made of a heat-insulating material.

[0098] The end of the pen head 306 is connected to a heat-conducting fixing seat 305, and the end of the heat-conducting fixing seat 305 away from the pen head 306 is connected to the end of the heat-insulating tail seat 307 away from the pen shaft 301. The heat-conducting fixing seat 305 is made of heat-conducting material.

[0099] The heat-conducting fixing seat 305 is also connected to a temperature sensor 327, and the temperature sensor 327 is a wireless temperature sensor;

[0100] The handle 10 is provided with a button for controlling the opening and closing of the pen head 306 in the end structure (such as Figure 1 as well as Figure 3 shown).

[0101] One end of the pen shaft 301 away from the heat-insulating tailstock 307 passes through the negative pressure chamber into the sliding chamber and is connected to the base body 312 in the base unit.

[0102] Reference Figures 5 to 8 、 Figure 10 as well as Figure 11 The embodiment of the present invention provides a temperature-controlled soft tissue high-frequency welding instrument, wherein the heat-conducting structure includes a flexible heat-insulating layer 323, which is made of a flexible high-temperature resistant heat-insulating material. A heat-conducting metal wire 324 is provided inside the flexible heat-insulating layer 323, and the heat-conducting metal wire 324 is insulated by the flexible heat-insulating layer 323;

[0103] One end of the flexible insulation layer 323 is connected to the end of the outer insulation sleeve 321, and the other end is respectively inserted into the base body 312, the pen body 301 and the insulation tail seat 307, and is connected to the end of the heat-conducting fixing seat 305;

[0104] One end of the heat-conducting metal wire 324 passes through the side wall of the flexible insulation layer 323 and is connected to the heat-conducting metal sheet 322 , and the other end is connected to the end of the corresponding heat-conducting fixing seat 305 .

[0105] When the pen tip 306 is in operation, the heat generated is transferred to the heat-conducting mounting 305. The heat is then continuously conducted through the heat-conducting wire 324 in the heat-conducting structure to the heat-conducting metal strip 322 in the bimetallic structure. The heat is then continuously conducted by the heat-conducting metal strip 322 to the C-shaped bimetallic strip 320. When the temperature at the pen tip 306 reaches the operating temperature of the C-shaped bimetallic strip 320, the free end of the C-shaped bimetallic strip 320 gradually deforms, driving the push-up head 319 in the tripping structure to move. This process causes the first return spring to gradually transition from a relaxed state to a compressed state. When the first return spring is fully compressed, the end of the push-up head 319 is flush with the surface of the base body 312, and the clamping head 318, which was originally locked in the clamping slot, is completely released from the clamping slot. When the temperature acting on the C-shaped bimetallic strip 320 drops below its operating temperature, the C-shaped bimetallic strip 320 gradually returns to its initial state.

[0106] When the end structure is completely retracted into the negative pressure chamber, the end of the clamping portion 318 is pressed tightly against the surface of the base body 312 under the action of the elastic force of the second return spring.

[0107] When the overheated pen head unit retracts into the negative pressure chamber, under the action of the negative pressure suction of the negative pressure generating mechanism, the air flow flowing into the negative pressure chamber will gather near the pen head unit, thereby improving the efficiency of heat exchange, and then helping to enhance the cooling effect of the overheated pen head unit, improving the cooling efficiency, thereby shortening the cooling time of the pen head unit, and allowing the device with overheated pen head unit to be put into use again quickly. In addition, when the pen head unit is overheated and the deformed bimetallic strip structure drives the tripping structure to eject the card head structure originally clamped in the card slot, the card head structure drives the passive spring piece 325 in the dynamic end module to release the resistance wire 3 in the static end module. 11 surface slides, so that the number of turns of the coil received between the fixed terminal 326 and the passive spring piece 325 increases, and the resistance value increases, so that the output power of the negative pressure fan 308 also decreases. When the card head structure is completely detached from the card slot and retracts into the negative pressure chamber under the elastic tension of the elastic contraction structure, under the limiting action of the base body 312, the distance between the passive spring piece 325 and the fixed terminal 326 no longer changes, so that the power of the negative pressure generating mechanism is reduced during the retraction of the overheated pen head unit into the negative pressure chamber. This ensures the cooling effect of the overheated pen head unit while saving energy.

[0108] The temperature of the pen head 306 is indirectly monitored in real time through the temperature sensor 327 connected to the heat-conducting fixing seat 305, and the temperature sensor 327 then transmits the detection signal to the external main controller. When the pen head unit retracts into the negative pressure chamber, medical staff can always understand the temperature of the pen head 306 in the pen head unit through the numerical value displayed on the main controller display screen. When the temperature of the pen head 306 drops to an appropriate range, the base unit located in the sliding chamber is driven to move through the extension seat 313. When the base body 312 in the base unit is against the end of the sliding chamber, the clamping head 318 is aligned with the clamping slot, and under the action of the second reset spring force, the clamping head 318 in the clamping head structure is quickly clamped into the clamping slot, thereby realizing the clamping fixation of the base unit, making it convenient for the operator to readjust the retracted pen head unit to the extended state, thereby facilitating the continuation of subsequent electrocoagulation hemostasis work.

[0109] The main controller mentioned in this article can be a conventional known device for controlling a computer, etc., and will not be described in detail here.

[0110] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A temperature-controlled soft tissue high-frequency welding instrument, characterized in that: It comprises a handle portion (10) and a front end portion (20) connected to the end of the handle portion (10), wherein the front end portion (20) is provided with an execution portion, wherein the execution portion comprises an electrocoagulation mechanism and a negative pressure generating mechanism, and a negative pressure chamber and a sliding chamber are respectively provided inside the front end portion (20); The electrocoagulation mechanism comprises a holder assembly located in the sliding chamber, a pen head unit located in the negative pressure chamber, and a snap assembly arranged on the side wall of the front end portion (20); The card holder assembly includes a base unit, the base unit is provided with a card slot, the card slot is provided with a tripping structure and a bimetallic structure in a C-shaped structure, and the base unit is also provided with an elastic contraction structure connected to the sliding chamber; The pen tip unit includes an end structure and a heat-conducting structure, and one end of the heat-conducting structure is connected to the end structure, and the other end is connected to the bimetallic structure; The snap assembly comprises a clamping head structure that is slidably inserted on the side wall of the front end portion (20) and can be movably clamped into the interior of the clamping slot, and a sliding variable resistance structure that is electrically connected to the negative pressure generating mechanism; The sliding resistance variable structure comprises a dynamic end module connected to the clamping head structure and a static end module connected to the side wall of the front end portion (20); The base unit comprises a base body (312) sliding in the sliding chamber, and the card slot is provided on the base body (312); An extension seat (313) is connected to the base body (312), and a straight groove adapted to the extension seat (313) and connected to the sliding chamber is provided at a position corresponding to the side wall of the front end portion (20) and the extension seat (313). The end of the extension seat (313) away from the base body (312) passes through the straight groove and slides in the straight groove. The elastic contraction structure is a tension spring (309) located in the sliding chamber, and one end of the tension spring (309) is connected to the end of the base body (312), and the other end is connected to the end of the sliding chamber; The bimetallic strip structure comprises a C-shaped bimetallic strip (320); One end of the C-shaped bimetallic strip (320) is connected to the bottom wall of the slot, and the other end is connected to an outer heat-insulating sleeve (321); a heat-conducting metal strip (322) is connected to the inner cavity of the outer heat-insulating sleeve (321), and the heat-conducting metal strip (322) is connected to the surface of the C-shaped bimetallic strip (320) on the side close to the C-shaped bimetallic strip (320); The tripping structure includes a pushing head (319) located in the slot; A limiting slider (315) is connected to the side wall of the pushing head (319), and a first return spring is connected to the limiting slider (315); A guide longitudinal groove is provided on the side wall of the slot, and one end of the limiting slider (315) away from the pushing head (319) extends into the guide longitudinal groove, and the limiting slider (315) slides in the guide longitudinal groove; One end of the first return spring away from the limiting slider (315) is connected to the end of the guide longitudinal groove; When the first return spring in the tripping structure is in a fully compressed state, the end of the pushing head (319) is flush with the surface of the base body (312).

2. The temperature-controlled soft tissue high-frequency welding instrument according to claim 1, characterized in that: The tip structure comprises a pen head portion (306) and a pen shaft portion (301) located in the negative pressure chamber, and the end of the pen shaft portion (301) is connected to a heat-insulating tailstock (307); The end of the pen head (306) is connected to a heat-conducting fixing seat (305), and the end of the heat-conducting fixing seat (305) away from the pen head (306) is connected to the end of the heat-insulating tail seat (307) away from the pen shaft (301), and the heat-conducting fixing seat (305) is also connected to a temperature sensor (327); One end of the pen shaft portion (301) away from the heat-insulating tailstock (307) passes through the negative pressure chamber into the sliding chamber and is connected to the base body (312) in the base unit.

3. The temperature-controlled soft tissue high-frequency welding instrument according to claim 2, characterized in that: The heat-conducting structure comprises a flexible heat-insulating layer (323), wherein a heat-conducting metal wire (324) is provided inside the flexible heat-insulating layer (323); One end of the flexible insulation layer (323) is connected to the end of the outer insulation sleeve (321), and the other end is sequentially inserted into the base body (312), the pen shaft (301), and the heat-insulating tailstock (307), and is connected to the end of the heat-conducting fixing seat (305); One end of the heat-conducting metal wire (324) passes through the side wall of the flexible heat-insulating layer (323) and is connected to the heat-conducting metal sheet (322), and the other end is connected to the end of its corresponding heat-conducting fixing seat (305).

4. The temperature-controlled soft tissue high-frequency welding instrument according to claim 1, characterized in that: The clamping head structure comprises a clamping head portion (318), and an end portion of the clamping head portion (318) is connected to a second return spring; The clamping portion (318) is slidably inserted on the side wall of the front end portion (20), and the end of the clamping portion (318) away from the second return spring can be movably buckled into the interior of the clamping slot.

5. The temperature-controlled soft tissue high-frequency welding instrument according to claim 4, characterized in that: The static end module includes an insulating cylinder seat (310) connected to the side wall of the front end portion (20) and arranged around the outer periphery of the clamping portion (318); The insulating cylinder seat (310) is spirally wound with a resistance wire (311); A vertical slot is provided on the side wall of the insulating cylinder seat (310); The insulating cylinder seat (310) is also connected to a fixed terminal (326); The active end module comprises a horizontal insulating rod connected to the side wall of the clamping portion (318); a passive spring piece (325) is connected to one end of the horizontal insulating rod away from the clamping portion (318); and a free end of the passive spring piece (325) passes through the vertical slot and is closely attached to the surface of the resistance wire (311).

6. The temperature-controlled soft tissue high-frequency welding instrument according to claim 5, characterized in that: The snap-on assembly further comprises an outer cover (302) connected to the side wall of the front end portion (20) and covering the outside of the clamping portion (318) and the insulating cylinder seat (310); A pull handle rod (316) is slidably inserted into the outer cover shell (302) at a position corresponding to the clamping head (318), and one end of the pull handle rod (316) close to the clamping head (318) is connected to the end of the clamping head (318); One end of the second return spring away from the clamping portion (318) is connected to the inner cavity end of the outer cover shell (302).

7. The temperature-controlled soft tissue high-frequency welding instrument according to claim 6, characterized in that: The negative pressure generating mechanism comprises an outer flow guide cover (304), the bottom of the outer flow guide cover (304) is connected to a support seat, the input end of the outer flow guide cover (304) is connected to a negative pressure hose (303), and the end of the negative pressure hose (303) away from the outer flow guide cover (304) is connected to the side wall of the front end portion (20) and communicates with the negative pressure chamber; A negative pressure fan (308) is connected to the output opening of the outer flow guide cover (304); The resistance wire (311), the passive spring (325), and the fixed terminal (326) in the static end module are all electrically connected to the negative pressure fan (308) in the negative pressure generating mechanism.

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