Radio frequency coagulation cutting device capable of switching between single pole and double poles

Abstract

The radio frequency coagulation cutting device comprises a radio frequency electrode clamp, a clamp head, a steering mechanism and a clamp body, the steering mechanism comprises a steering knob, a rotating body, a shaft sleeve and a fixing sleeve, the rear portion of the rotating body is sleeved with the shaft sleeve, clamping grooves are formed in the corresponding positions of the exterior of the shaft sleeve and the interior of the fixing sleeve, and the rotating body is sleeved with the clamping grooves. Clamping springs are arranged in clamping grooves at corresponding positions outside the shaft sleeve and inside the fixing sleeve, the outer wall of the fixing sleeve is connected with the inner wall of the clamp body, the front portion of the rotating body is sleeved with a steering knob, the front end of the rotating body is connected with the tail end of the clamp head, and a wire penetrating hole is formed in the rotating body. According to the utility model, the direction of the clamp head of the radio frequency electrode clamp can be adjusted through the steering mechanism according to different conditions so as to adapt to the clamping of a part to be treated under different conditions; according to the utility model, single-pole and double-pole switching can be carried out by using a single radio frequency electrode clamp, so that a single-pole radio frequency coagulation and cutting operation and a double-pole radio frequency coagulation and cutting operation can be conveniently carried out.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and particularly relates to a radiofrequency coagulation and cutting device capable of single-pole and bipolar switching, which is applicable to switching between single-pole and bipolar modes with a single radiofrequency electrode forceps, facilitating single-pole radiofrequency coagulation and cutting operations and bipolar radiofrequency coagulation and cutting operations. Background Technique

[0002] The radiofrequency coagulation and cutting system capable of single-pole and bipolar switching integrates advanced electronic control technology and radiofrequency energy output technology. By precisely controlling the output mode and parameters of radiofrequency energy, it realizes efficient and safe cutting and coagulation of tissues during the operation. This system is widely used in various surgical fields that require radiofrequency coagulation and cutting technology, such as cardiac surgery, respiratory medicine, and gastroenterology. Especially in surgeries that require precise control of the thermal damage range and operation time, its advantages are particularly obvious.

[0003] The existing technologies mainly include traditional single-pole and bipolar radiofrequency coagulation and cutting systems. The single-pole system forms a current loop through the working electrode and the dispersive electrode, but it is prone to cause thermal damage to the surrounding tissues and the risk of electric shock; the bipolar system forms a local loop between the two electrodes, reducing thermal damage but lacking flexibility, and in some specific surgical scenarios, such as when large-scale tissue cutting is required, the bipolar mode may not meet the requirements. At the same time, traditional electrocoagulation forceps and coagulation and cutting knives are both rigid and limited in length, and cannot adapt to environments such as the digestive tract. Content of the Utility Model

[0004] The purpose of the utility model is to provide a radiofrequency coagulation and cutting device capable of single-pole and bipolar switching in view of the above problems existing in the prior art.

[0005] The above object of the utility model is achieved by the following technical means:

[0006] A radiofrequency coagulation and cutting device capable of single-pole and bipolar switching includes a radiofrequency electrode forceps. The radiofrequency electrode forceps includes a forceps body, a steering mechanism, and a forceps head. The steering mechanism includes a steering knob, a rotating body, a shaft sleeve, and a fixing sleeve. The rear part of the rotating body is sleeved with the shaft sleeve. Claw slots are provided at corresponding positions on the outer part of the shaft sleeve and the inner part of the fixing sleeve. A snap ring is arranged in the claw slots at corresponding positions on the outer part of the shaft sleeve and the inner part of the fixing sleeve. The outer wall of the fixing sleeve is connected to the inner wall of the forceps body. The front part of the rotating body is sleeved with the steering knob. The front end of the rotating body is connected to the end of the forceps head. A wire through hole is opened on the rotating body.

[0007] As described above, the clamp head includes a fixed clamp head, a movable clamp head, an insulating hose, a spring tube, and a wire tube. The fixed clamp head includes a fixed jaw at the front and a fixed block at the tail. The movable clamp head includes a movable jaw and a transmission tube. The movable jaw and the transmission tube are fixedly connected in a V shape. The turning point of the movable jaw and the transmission tube is hinged to the fixed block. The front end of the wire tube is fixedly connected to the transmission tube. The spring tube is sleeved outside the wire tube and the fixed block. The front end of the spring tube is fixedly connected to the fixed jaw. The insulating hose is sleeved and fixed outside the spring tube. The ends of the insulating hose and the spring tube are both fixedly connected to the front end of the rotating body.

[0008] As described above, the clamp body is a hollow structure. A fixed handle is provided at the end of the clamp body. A chute is provided on the inner wall of the clamp body. A slider is provided in the chute. A strip hole is also provided on the clamp body. The direction of the strip hole is the same as the direction of the chute. One end of the pushing handle is fixedly connected to the slider. The other end of the pushing handle passes through the strip hole and extends to the outside of the clamp body. An electrode copper sleeve is also provided in the clamp body. The outer wall of the electrode copper sleeve is fixedly connected to the inner wall of the clamp body. The front end of the electrode copper sleeve is connected to the fixed sleeve. The rear end of the wire tube passes through the wire through hole of the rotating body and the electrode copper sleeve in sequence, and then is movably connected to the slider.

[0009] As described above, the direction of the chute is arranged along the axial direction of the wire tube. The wire through hole on the rotating body is also arranged along the axial direction of the wire tube.

[0010] As described above, an electrode seat mounting hole is also provided on the clamp body. An electrode seat is provided in the electrode seat mounting hole. A first receiving electrode and a second receiving electrode are provided in the electrode seat. The first receiving electrode is connected to the electrode copper sleeve. A conductive plug is also provided on the electrode seat. One end of the conductive plug is connected to the second receiving electrode. An elastic tube sleeve is sleeved outside the conductive plug. One end of the elastic tube sleeve is fixedly connected to the electrode seat. A wire connection hole is provided on the wire tube. The other end of the elastic tube sleeve is connected to the wire connection hole.

[0011] As described above, a wire is provided in the wire tube. One end of the wire passes through the wire connection hole and is connected to the other end of the conductive plug. The other end of the wire passes through the front end of the wire tube and the transmission tube, and then is connected to the movable jaw.

[0012] The utility model has the following beneficial effects compared with the prior art:

[0013] (1) The utility model can perform single-pole and double-pole switching with a single radiofrequency electrode clamp, which is convenient for performing monopolar radiofrequency coagulation resection surgery and bipolar radiofrequency coagulation resection surgery;

[0014] (2) The utility model is provided with a steering mechanism, which can adjust the direction of the clamp head of the radiofrequency electrode clamp according to different situations to adapt to the clamping of the treatment site under different situations;

[0015] (3) The pliers head part of the present utility model is also provided with an insulating hose, which can adapt to the complex environment in the digestive tract and pass through the narrow areas in the digestive tract;

[0016] (4) The present utility model can control the opening and closing of the pliers head by pushing the handle, which is convenient for clamping treatment of the part to be treated. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is a schematic diagram of the structure of the pliers body of the present utility model;

[0019] Figure 3 is a schematic diagram of the structure of the pliers head of the present utility model;

[0020] Reference numerals and corresponding component names:

[0021] 1 - main body; 2 - pliers body; 3 - pliers head; 4 - negative electrode plate; 5 - radio frequency electrode pliers; 6 - fixed handle; 7 - push handle; 8 - slider; 9 - steering knob; 10 - rotating body; 11 - fixed jaw; 12 - movable jaw; 13 - insulating hose; 14 - spring tube; 15 - transmission tube; 16 - wire tube; 17 - electrode base; 18 - conductive plug; 19 - electrode copper sleeve; 20 - switch button; 21 - single - pole switching button; 22 - bipolar switching button; 23 - first output port; 24 - second output port; 25 - negative electrode plate port; 26 - wire; 27 - fixed block; 28 - fixed sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to facilitate the understanding and implementation of the present utility model by those of ordinary skill in the art, the present utility model will be further described in detail below in conjunction with embodiments. The embodiments described herein are only used to illustrate and explain the present utility model and are not intended to limit the present utility model.

[0023] Embodiment 1:

[0024] As Figures 1 to 3As shown in the figure, a radiofrequency coagulation cutting device capable of single and bipolar switching includes a radiofrequency electrode forceps 5. The radiofrequency electrode forceps 5 includes a forceps body 2, a steering mechanism, and a forceps head 3. The steering mechanism includes a steering knob 9, a rotating body 10, a bushing, and a fixed sleeve 28. A bushing is sleeved on the rear part of the rotating body 10. Card slots are provided at corresponding positions on the outer part of the bushing and the inner part of the fixed sleeve 28. A circlip is provided in the card slots at corresponding positions on the outer part of the bushing and the inner part of the fixed sleeve 28. The outer wall of the fixed sleeve 28 is threadedly connected to the inner wall of the forceps body 2. The rotating body 10 and the bushing can rotate circumferentially relative to the fixed sleeve 28. A steering knob 9 is sleeved on the front part of the rotating body 10. The front end of the rotating body 10 is connected to the end of the forceps head 3. A wire perforation is provided on the rotating body 10.

[0025] As an implementable manner, the rotating body 10 and the bushing are connected by interference fit. The outer part of the bushing and the inner wall of the fixed sleeve 28 are connected by clearance fit. Lubricating oil is provided between the fixed sleeve 28 and the bushing to facilitate the rotation of the rotating body 10 and the bushing relative to the fixed sleeve 28. The circlip can prevent the axial movement of the rotating body 10 and the bushing. By rotating the steering knob 9, the rotating body 10 is driven to rotate, and the rotating body 10 drives the circumferential rotation of the forceps head 3.

[0026] The forceps head 3 includes a fixed forceps head, a movable forceps head, an insulating hose 13, a spring tube 14, and a wire tube 16. The fixed forceps head includes a fixed jaw 11 at the front and a fixed block 27 at the tail. The fixed jaw 11 is connected to the fixed block 27. The movable forceps head includes a movable jaw 12 and a transmission tube 15. The movable jaw 12 and the transmission tube 15 are fixedly connected in a V shape. The turning point of the movable jaw 12 and the transmission tube 15 is hinged to the fixed block 27. The front end of the wire tube 16 is fixedly connected to the transmission tube 15. The spring tube 14 is sleeved outside the wire tube 16 and the fixed block 27. The front end of the spring tube 14 is fixedly connected to the fixed jaw 11. The insulating hose 13 is sleeved and fixed outside the spring tube 14. The ends of the insulating hose 13 and the spring tube 14 are both fixedly connected to the front end of the rotating body 10.

[0027] The movable jaw 12 can rotate around the hinge point, so that the movable jaw 12 and the fixed jaw 11 open or close. When the movable jaw 12 and the fixed jaw 11 are closed, the fixed jaw 11 and the movable jaw 12 are tightly engaged on the contact surface; the spring tube 14 plays a role in connection, support and conduction; the insulating hose 13 can adapt to the complex environment in the digestive tract and pass through the narrow area in the digestive tract.

[0028] The pliers body 2 is a hollow structure. A fixed handle 6 is provided at the end of the pliers body 2. A chute is provided on the inner wall of the pliers body 2, and a slider 8 is arranged in the chute. The slider 8 can slide reciprocally along the chute. A strip-shaped hole is also formed in the pliers body 2, and the direction of the strip-shaped hole is the same as that of the chute. One end of the push handle 7 is fixedly connected to the slider 8, and the other end of the push handle 7 passes through the strip-shaped hole and extends to the outside of the pliers body 2. An electrode copper sleeve 19 is also arranged in the pliers body 2. The outer wall of the electrode copper sleeve 19 is fixedly connected to the inner wall of the pliers body 2. The front end of the electrode copper sleeve 19 is connected to the fixed sleeve 28. The rear end of the wire conduit 16 sequentially passes through the wire through hole of the rotating body 10 and the electrode copper sleeve 19, and then is movably connected to the slider 8. The slider 8 can perform circumferential rotation.

[0029] As an implementable manner, a bearing is arranged in the slider 8. The outer ring of the bearing is fixedly connected to the slider 8, and the inner ring of the bearing is fixedly connected to one end of the wire conduit 16.

[0030] The direction of the chute is arranged along the axial direction of the wire conduit 16, and the wire through hole on the rotating body 10 is also arranged along the axial direction of the wire conduit 16.

[0031] The fixed handle 6 is convenient for picking up the entire radiofrequency electrode pliers 5, and the push handle 7 is convenient for pushing the wire conduit 16 forward or pulling it backward. When pushing the push handle 7 forward, the push handle 7 drives the slider 8 to move forward, and the slider 8 drives the wire conduit 16 to push the transmission tube 15 forward, so that the movable jaw 12 and the fixed jaw 11 open; when pulling the push handle 7 backward, the push handle 7 drives the slider 8 to move backward, and the slider 8 drives the wire conduit 16 to pull the transmission tube 15 backward, so that the movable jaw 12 and the fixed jaw 11 close.

[0032] An electrode seat mounting hole is also formed in the pliers body 2. An electrode seat 17 is arranged in the electrode seat mounting hole. A first receiving electrode and a second receiving electrode are arranged in the electrode seat 17. The first receiving electrode is connected to the electrode copper sleeve 19. A conductive plug 18 is also arranged on the electrode seat 17. One end of the conductive plug 18 is fixedly connected to the second receiving electrode. An elastic tube sleeve is sleeved outside the conductive plug 18. One end of the elastic tube sleeve is fixedly connected to the electrode seat 17. A wire connection hole is formed in the wire conduit 16. The other end of the elastic tube sleeve is connected to the wire connection hole. A wire 26 is arranged in the wire conduit 16. One end of the wire 26 passes through the wire connection hole and is connected to the other end of the conductive plug 18. The other end of the wire 26 passes through the front end of the wire conduit 16 and the transmission tube 15, and then is connected to the movable jaw 12.

[0033] It further includes a main unit 1 and a negative electrode plate 4. A switch button 20, a monopolar switching button 21, a bipolar switching button 22, a first output port 23, a second output port 24, and a negative electrode plate port 25 are provided on the main unit 1. The negative electrode plate port 25 is connected to the negative electrode plate 4 through a signal line. The first receiving electrode of the electrode base 17 is connected to the first output port 23 through a signal line, and the second receiving electrode of the electrode base 17 is connected to the second output port 24 through a signal line.

[0034] The rotating body 10, the bushing, the spring tube 14, and the fixing sleeve 28 are all made of conductive materials. The wire tube 16, the transmission tube 15, the fixing block 27, the pliers body 2, the steering knob 9, and the elastic tube sleeve are all made of insulating materials. The elastic tube sleeve has elasticity, so as to ensure that when the wire tube 16 moves forward or backward, it will not affect the electrode base 17.

[0035] The main unit 1 can adopt a radio frequency generator main unit of model BBT-RF-001. When the monopolar switching button 21 is pressed, the main unit 1 is in the monopolar output mode, and the high-frequency current is output through the first output port 23 and the negative electrode plate port 25; when the bipolar switching button 22 is pressed, the main unit 1 is in the bipolar output mode, and the high-frequency current is output through the first output port 23 and the second output port 24.

[0036] When the bipolar output mode is adopted, the high-frequency current is transmitted to the fixed jaw 11 through the first receiving electrode, the electrode copper sleeve 19, the rotating body 10, and the spring tube 14. The high-frequency current also reaches the movable jaw 12 through the second receiving electrode and the wire 26. The high-frequency current forms a path between the movable jaw 12 and the fixed jaw 11, and the energy is concentrated on the clamping parts of the movable jaw 12 and the fixed jaw 11.

[0037] When the monopolar output mode is adopted, the high-frequency current forms a path between the forceps head 3 and the negative electrode plate 4.

[0038] The working principle of the present utility model is as follows:

[0039] When the monopolar mode is used, first pull the push handle 7 backward to close the movable jaw 12 and the fixed jaw 11, then send the forceps head 3 into the part of the patient to be treated, place the negative electrode plate 4 at the corresponding part of the patient, then turn on the main unit 1 and switch to the monopolar output mode. The high-frequency current is conducted to the target tissue at the part to be treated through the forceps head 3, realizing cutting, ablation, and blood coagulation of deep tissues.

[0040] When using the bipolar mode, insert the forceps head 3 into the treatment site of the patient, turn the steering knob 9 to adjust the direction of the forceps head 3, then push the push handle 7 forward to open the movable jaw 12 and the fixed jaw 11, so as to clamp the treatment site. Then, pull the push handle 7 backward to close the movable jaw 12 and the fixed jaw 11. Then, turn on the main unit 1 and switch to the bipolar output mode. The high-frequency current forms a path between the movable jaw 12 and the fixed jaw 11, enabling the energy to act concentratedly on the clamping area and achieving precise treatment of superficial tissues.

[0041] It should be noted that the embodiments described in the present invention are only illustrative examples of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A radiofrequency coagulation and cutting device capable of single - bipolar switching, comprising a radiofrequency electrode forceps (5), characterized in that, The radio frequency electrode forceps (5) includes a forceps body (2), a steering mechanism, and a forceps head (3). The steering mechanism includes a steering knob (9), a rotating body (10), a shaft sleeve, and a fixing sleeve (28). A shaft sleeve is sleeved on the rear part of the rotating body (10). Card slots are provided at corresponding positions on the outer part of the shaft sleeve and the inner part of the fixing sleeve (28). A circlip is arranged in the card slots at corresponding positions on the outer part of the shaft sleeve and the inner part of the fixing sleeve (28). The outer wall of the fixing sleeve (28) is connected to the inner wall of the forceps body (2). A steering knob (9) is sleeved on the front part of the rotating body (10). The front end of the rotating body (10) is connected to the end of the forceps head (3). A wire through hole is formed on the rotating body (10).

2. The radiofrequency coagulation and cutting device capable of single - double pole switching according to claim 1, wherein, The forceps head (3) includes a fixed forceps head, a movable forceps head, an insulating hose (13), a spring tube (14), and a wire tube (16). The fixed forceps head includes a fixed jaw (11) at the front part and a fixed block (27) at the tail part. The movable forceps head includes a movable jaw (12) and a transmission tube (15). The movable jaw (12) and the transmission tube (15) are fixedly connected into a V shape. The turning point of the movable jaw (12) and the transmission tube (15) is hinged to the fixed block (27). The front end of the wire tube (16) is fixedly connected to the transmission tube (15). The spring tube (14) is sleeved outside the wire tube (16) and the fixed block (27). The front end of the spring tube (14) is fixedly connected to the fixed jaw (11). The insulating hose (13) is sleeved and fixed outside the spring tube (14). The ends of the insulating hose (13) and the spring tube (14) are both fixedly connected to the front end of the rotating body (10).

3. The radiofrequency coagulation and cutting device capable of single and bipolar switching according to claim 2, characterized in that, The forceps body (2) is of a hollow structure. A fixed handle (6) is arranged at the end of the forceps body (2). A sliding groove is arranged on the inner wall of the forceps body (2). A slider (8) is arranged in the sliding groove. A strip hole is also formed on the forceps body (2). The direction of the strip hole is the same as that of the sliding groove. One end of a pushing handle (7) is fixedly connected to the slider (8). The other end of the pushing handle (7) passes through the strip hole and extends outside the forceps body (2). An electrode copper sleeve (19) is also arranged in the forceps body (2). The outer wall of the electrode copper sleeve (19) is fixedly connected to the inner wall of the forceps body (2). The front end of the electrode copper sleeve (19) is connected to the fixing sleeve (28). The rear end of the wire tube (16) passes through the wire through hole of the rotating body (10) and the electrode copper sleeve (19) in sequence, and then is movably connected to the slider (8).

4. The radiofrequency coagulation and cutting device capable of single-pole and bipolar switching according to claim 3, characterized in that, The direction of the sliding groove is arranged along the axial direction of the wire tube (16). The wire through hole on the rotating body (10) is also arranged along the axial direction of the wire tube (16).

5. The radiofrequency coagulation and cutting device capable of single-pole and bipolar switching according to claim 4, wherein, An electrode seat mounting hole is also formed on the forceps body (2). An electrode seat (17) is arranged in the electrode seat mounting hole. A first receiving electrode and a second receiving electrode are arranged in the electrode seat (17). The first receiving electrode is connected to the electrode copper sleeve (19). A conductive plug (18) is also arranged on the electrode seat (17). One end of the conductive plug (18) is connected to the second receiving electrode. An elastic tube sleeve is sleeved outside the conductive plug (18). One end of the elastic tube sleeve is fixedly connected to the electrode seat (17). A wire connection hole is formed on the wire tube (16). The other end of the elastic tube sleeve is connected to the wire connection hole.

6. The radiofrequency coagulation and cutting device capable of single-pole and bipolar switching according to claim 5, wherein A wire (26) is arranged in the conduit (16). One end of the wire (26) passes through the wire connection hole and is connected to the other end of the conductive plug (18), and the other end of the wire (26) passes through the front end of the conduit (16) and the drive tube (15) and is then connected to the movable jaw (12).

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