A bipolar coagulation forceps

Abstract

The application discloses a bipolar electrocoagulation forceps, comprising a main forceps head, a sliding rod, a sleeve, a handle and a light, the end of the sleeve is arranged in the handle, the sliding rod is arranged in the sleeve in a sliding mode, the main forceps head comprises two sub forceps heads, the main forceps head is arranged at the front end of the sleeve, the opening and closing of the two sub forceps heads are controlled by the sliding of the sliding rod, the light is arranged at the front end of the sleeve, and a liquid suction channel is formed between the sleeve and the sliding rod. Through the cooperation and optimization of the main forceps head, the integrated light and the liquid suction channel, the clinical applicability and operation efficiency of the bipolar electrocoagulation forceps are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a medical instrument, in particular to a bipolar electrocoagulation forceps. BACKGROUND

[0002] Since the bipolar electrocoagulation technology was applied in clinical practice in the mid-20th century, it has become an indispensable hemostatic tool in modern surgical operations. Its working principle is to denature tissue proteins through the current between two electrodes, achieving hemostatic effect. Compared with monopolar electrocoagulation, the bipolar system has the advantages of controllable current path and small tissue damage range, and is particularly suitable for delicate surgical fields such as neurosurgery and microsurgery. However, with the development of minimally invasive surgery and precision medicine, the traditional bipolar electrocoagulation forceps gradually exposes obvious shortcomings in terms of illumination, coagulation efficiency and fluid management.

[0003] Inadequate intraoperative illumination: In deep or narrow surgical fields, external light sources are easily blocked, resulting in dim surgical field and affecting operation accuracy. Low coagulation efficiency: The traditional forceps head design is simple, and the forceps head is wide, resulting in energy concentration and low electrocoagulation efficiency. Fluid interference: The accumulation of blood, tissue fluid or irrigation fluid during the operation affects the operation field of view and electrocoagulation effect, and the traditional solution relies on external suction equipment, but the additional equipment occupies surgical space. Therefore, it is necessary to propose a bipolar electrocoagulation forceps to improve surgical efficiency, shorten operation time and reduce the risk of complications caused by unclear vision or low electrocoagulation efficiency. SUMMARY

[0004] The purpose of the present application is to solve the problems in the background art, and to provide a bipolar electrocoagulation forceps.

[0005] The above technical purpose of the present application is realized by the following technical scheme:

[0006] A bipolar electrocoagulation forceps, comprising a main forceps head, a sliding rod, a sleeve, a handle and a light, the end of the sleeve is arranged in the handle, the sliding rod is slidingly arranged in the sleeve, the main forceps head comprises two sub-forceps heads, the main forceps head is arranged at the front end of the sleeve, the sliding rod controls the opening and closing of the two sub-forceps heads by sliding forward and backward, the light is arranged at the front end of the sleeve, and a suction channel is formed between the sleeve and the sliding rod.

[0007] By sliding the sliding rod forward and backward in the sleeve, the opening and closing of the sub-forceps head is controlled, the electrocoagulation efficiency is improved, the surgical area is irradiated by the light, the problem of external light source blocking is avoided, the clear visibility of deep or narrow surgical field is ensured, the operation accuracy is improved, the blood, tissue fluid or irrigation fluid can be removed in real time during electrocoagulation through the suction channel, the influence of liquid accumulation on the field of view is avoided, the operation interruption is reduced, the operation fluency and efficiency are improved, and thus the clinical applicability and operation efficiency of the bipolar electrocoagulation forceps are significantly improved through the synergistic optimization of the main forceps head, integrated lighting and suction channel.

[0008] The bipolar electrocoagulation forceps can be used for laparoscopic cholecystectomy and appendectomy in general surgery, thoracoscopic lobectomy and mediastinal tumor resection in thoracic surgery, laparoscopic myomectomy and total hysterectomy in gynecology and obstetrics, continuous laparoscopic renal cyst decompression and transurethral resection of the prostate in urology, and intracranial tumor minimally invasive surgery and spinal minimally invasive surgery in neurosurgery.

[0009] Preferably, the width of the sub-clamp head gradually decreases along the direction from the bottom to the head. The smaller the width of the embedded head of the present application, the higher the current density, the faster the energy concentration and the temperature rise, thereby achieving efficient electrocoagulation.

[0010] The opposite sides of the two sub-clamp heads are provided with racks along the length direction, and the two racks are engaged in staggered manner. When the racks are engaged in staggered manner, the contact points of the sub-clamp heads with the tissue increase, so that the current is more evenly distributed on the tissue, allowing more tissue to be simultaneously heat coagulation, thereby improving the efficiency of electrocoagulation; and the interlaced racks can better fix the tissue, preventing the tissue from sliding during electrocoagulation, ensuring the accuracy of the electrocoagulation site, reducing repeated operations, and indirectly improving efficiency.

[0011] Preferably, the outer side of the sleeve is further provided with a fixing tube, the illuminating lamp is fixed on the front wall of the fixing tube, and a smoke suction channel is formed between the fixing tube and the sleeve. The smoke suction channel can suck smoke in real time, avoid smoke accumulation affecting the field of vision, reduce operation interruption, improve operation fluency and efficiency, and also reduce the interference of smoke on the illuminating lamp.

[0012] Preferably, a three-way valve is arranged in the handle, the three-way valve is divided into an inlet, a liquid outlet and a smoke outlet, the liquid suction channel and the smoke suction channel are connected with the inlet of the three-way valve, and a control handle of the three-way valve is located on the outer side of the handle. By controlling the control handle to control whether the inlet is connected with the liquid outlet or the smoke outlet, the smoke suction and the liquid suction can be processed separately, the independent smoke suction channel can process the smoke preferentially, the mixture of smoke and liquid is avoided to be condensed into mist and remain, the blood and exudate can be removed through the liquid suction channel as needed, and therefore the clear surgical field of vision can be maintained at all times.

[0013] Preferably, the front end of the sleeve is provided with two symmetrical extension plates, the two sub-clamp heads are hinged through fixing pins, the front end of one of the sub-clamp heads is hinged with the front end of the sliding rod through a fixing pin, and the other sub-clamp head is hinged with the extension plate through a fixing pin, so that the opening and closing of the main clamp head can be controlled by moving the sliding rod forward and backward.

[0014] Preferably, the handle is internally provided with a front and back movement control mechanism, the front and back movement control mechanism comprises a hand-held part, a fixed block, the top of the hand-held part is provided with a fixed hole, the fixed block is rotatably arranged in the fixed hole, the side wall of the hand-held part close to the sliding rod is provided with a limiting groove for facilitating the sliding rod to pass through and move forward and backward, the end of the sliding rod is arranged in the fixed block, the part of the hand-held part located in the handle is provided with a supporting shaft for facilitating the rotation of the hand-held part, the hand-held part and the handle are scissor-shaped, the sleeve is limited on the handle and cannot move forward and backward, but can only rotate.

[0015] When the hand-held part rotates along the supporting shaft, the sleeve cannot move forward and backward, so that the sliding rod moves forward and backward.

[0016] Preferably, the end of the fixed tube is fixed with a rotating ring, the fixed tube and the rotating ring are in communication with each other, the rotating ring and the sleeve are fixedly connected through the fixed strip, and the smoking hole is formed between the two fixed strips. The end of the rotating ring is closed and connected with the sleeve to prevent smoke leakage, and the end of the sleeve is sealed with the sliding rod through the piston to ensure that the sliding rod can move while preventing liquid leakage. The piston sealing is a prior art, and therefore will not be described in detail.

[0017] The rotating ring can drive the main jaw to rotate, accurately adapt to a complex operation field, multi-angle hemostasis, reduce instrument replacement and tissue traction, improve electrocoagulation effect, reduce heat damage risk, optimize operation efficiency, and enhance surgical safety, and is especially suitable for minimally invasive and narrow space operation.

[0018] Preferably, the end of the sliding rod is formed with a limiting ring, and the fixed block is formed with a clamping groove for preventing the limiting ring from moving forward and backward, so that the rotation of the sliding rod is ensured and the sliding rod is prevented from falling off the fixed block.

[0019] Preferably, the bottom of the supporting shaft is further provided with a rotation angle control mechanism, the rotation angle control mechanism comprises a shell, a ratchet, a clamping pawl, an opening pawl, a clamping compression spring, an opening compression spring and a rotating extrusion block, the shell is fixed on the handle, the ratchet is rotatably fixed on the inner bottom of the shell through a bearing, the supporting shaft is fixed on the top of the ratchet, the clamping pawl and the opening pawl are located on the lower part of the ratchet and are matched with the ratchet, the clamping compression spring is arranged between the clamping pawl and the side wall of the shell, the opening compression spring is arranged between the opening pawl and the side wall of the shell, the rotating extrusion block is arranged between the clamping pawl and the opening pawl, the bottom of the rotating extrusion block is provided with a rotating rod, the rotating rod is located on the outer wall of the handle, and one end of the clamping pawl and the opening pawl is hinged with the shell, and the other end is a free end.

[0020] The present application can keep the opening degree unchanged by rotating the rotating rod to make the rotating extrusion block extrude the opening pawl, so that the opening pawl cannot contact the ratchet wheel, and then closing the handheld part, so that the ratchet wheel can rotate clockwise, and when the required closing angle is adjusted, the closing angle can be kept unchanged, the opening degree can be kept, when the clamping is needed, only the rotating rod is rotated to make the rotating extrusion block extrude the opening pawl, so that the opening pawl cannot contact the ratchet wheel, and then closing the handheld part, so that the ratchet wheel can rotate clockwise, and when the required closing angle is adjusted, the closing angle can be kept unchanged, the opening degree can be kept, which can reduce the influence of operator fatigue, ensure accurate clamping of blood vessels, optimize energy transmission efficiency, and reduce the risk of thermal damage to surrounding tissues, especially suitable for long-time fine operation, significantly improve the safety and reliability of operation, and further improve the efficiency of operation.

[0021] In summary, the beneficial effects of the present application are:

[0022] 1. The sliding rod slides forward and backward in the sleeve to control the opening and closing of the main clamp head, improve the efficiency of electrocoagulation, and the illumination lamp irradiates the operation area to avoid the problem of external light source blocking, ensure the clear visibility of deep or narrow operation field, improve the operation accuracy, and the liquid suction channel can suck blood, tissue fluid or irrigation fluid in real time during electrocoagulation, avoid the influence of liquid accumulation on the visual field, reduce the interruption of operation, improve the smoothness and efficiency of operation, so that the cooperation of the main clamp head, integrated illumination and liquid suction channel can significantly improve the clinical applicability and operation efficiency of the bipolar electrocoagulation forceps;

[0023] 2. The smaller the width of the embedded head of the present application, the higher the current density, the faster the energy concentration and temperature rise, so as to realize efficient electrocoagulation;

[0024] 3. The present application controls the connection of the inlet and outlet with the smoke outlet by controlling the handle, so that the smoke and liquid can be processed separately, the independent smoke suction channel can preferentially process smoke (especially during continuous electrocoagulation), avoid the mixture of smoke and liquid after condensation into mist, affect the clarity of the visual field under the microscope, and the blood / effusion can be removed as needed through the liquid suction channel, so as to maintain a clear surgical field at all times;

[0025] 4. The present application rotates the rotating rod to make the rotating extrusion block extrude the clamping pawl, so that the clamping pawl cannot contact the ratchet wheel, then open the hand-held part, so that the ratchet wheel can be counterclockwise rotated, when adjusted to the required opening angle, the ratchet wheel is clamped by the clamping pawl, the angle can be kept unchanged, the opening degree is kept, when clamping is needed, only the rotating rod is rotated to make the rotating extrusion block extrude the opening pawl, so that the opening pawl cannot contact the ratchet wheel, then the hand-held part is closed, so that the ratchet wheel can be clockwise rotated, when adjusted to the required closing angle, the closing angle is kept, the fatigue influence of the operator can be reduced, the precise clamping of the blood vessel is ensured, the energy transmission efficiency is optimized, the risk of thermal damage to the surrounding tissue is reduced, it is especially suitable for long time fine operation, the operation safety and reliability are significantly improved, and the operation efficiency is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic diagram of the whole application;

[0027] Figure 2 is an enlarged schematic diagram of A of the present application Figure 1 ;

[0028] Figure 3 is a schematic diagram of the connection of the main clamp head and the sliding rod of the present application;

[0029] Figure 4 is a schematic diagram of the inside of the handle of the present application;

[0030] Figure 5 is a top view schematic diagram of the fixed block of the present application;

[0031] Figure 6 is a schematic diagram of the hand-held part of the present application;

[0032] Figure 7 is a sectional view schematic diagram of the whole application;

[0033] Figure 8 is an enlarged schematic diagram of B of the present application Figure 7 ;

[0034] Figure 9 is an enlarged schematic diagram of C of the present application Figure 7 ;

[0035] Figure 10 is a sectional view schematic diagram of the connection of the sliding rod, the sleeve, the fixed strip and the rotating ring of the present application;

[0036] Figure 11 is a schematic diagram of the whole rotating angle control mechanism of the present application;

[0037] Figure 12 is a front view schematic diagram of the rotating angle control mechanism of the present application;

[0038] Figure 13 This is a schematic diagram showing the position of the rotating rod of the present invention on the back of the housing;

[0039] Figure 14 This is a schematic diagram showing the racks of the present invention being staggered.

[0040] 1. Main clamp head; 11. Sub-clamp head; 2. Sliding rod; 3. Sleeve; 4. Handle; 5. Lighting lamp; 6. Suction channel; 30. Fixing tube; 60. Smoke channel; 41. Three-way valve; 411. Inlet; 412. Liquid outlet; 413. Smoke outlet; 31. Extension plate; 40. Forward and backward movement control mechanism; 401. Handheld part; 402. Fixing block; 404. Limiting groove; 405. Support shaft; 32. Rotating ring; 312. Smoke hole; 21. Limiting ring; 406. Slot; 7. Rotation angle control mechanism; 71. Housing; 72. Ratchet; 73. Clamping pawl; 74. Opening pawl; 75. Clamping compression spring; 77. Opening compression spring; 76. Rotating squeezing block; 78. Rotating rod. Detailed Implementation

[0041] The following specific embodiments are merely illustrative of the present invention and are not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of the present invention.

[0042] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0043] Example

[0044] like Figures 1-2 As shown, a bipolar electrocoagulation forceps includes a main clamp head 1, a sliding rod 2, a sleeve 3, a handle 4, and a lighting lamp 5. The end of the sleeve 3 is located inside the handle 4, and the sliding rod 2 is slidably located inside the sleeve 3. The main clamp head 1 includes two sub-clamp heads 11, which are located at the front end of the sleeve 3. The sliding rod 2 controls the opening and closing of the two sub-clamp heads 11 by sliding back and forth. The lighting lamp 5 is located at the front end of the sleeve 3. A suction channel 6 is formed between the sleeve 3 and the sliding rod 2. The width of the sub-clamp heads 11 gradually decreases from the bottom to the head. Each of the two sub-clamp heads 11 has a rack 110 on its opposite side along the length direction. The two racks are staggered and interlocked to prevent slippage during clamping.

[0045] like Figure 9 As shown, a fixing tube 30 is also provided on the outside of the sleeve 3, and the lighting lamp 5 is fixed on the front wall of the fixing tube 30. A smoking channel 60 is formed between the fixing tube 30 and the sleeve 3.

[0046] like Figure 4As shown, the handle 4 is provided with a three-way valve 41, which is divided into an inlet 411, a liquid outlet 412 and a smoke outlet 413. The liquid suction channel 6 and the smoke suction channel 60 are both connected to the inlet of the three-way valve 41. The control handle of the three-way valve 41 is located on the outside of the handle 4.

[0047] like Figure 3 As shown, the front end of the sleeve 3 is provided with two symmetrical extension plates 31, and the two sub-clamp heads 11 are hinged by a fixing pin. The front end of one sub-clamp head 11 is hinged to the front end of the sliding rod 2 by a fixing pin, and the other sub-clamp head 11 is hinged to the extension plate 31 by a fixing pin.

[0048] like Figures 4-6 As shown, the handle 4 is provided with a forward and backward movement control mechanism 40. The forward and backward movement control mechanism 40 includes a hand-held part 401 and a fixing block 402. The top of the hand-held part 401 is provided with a fixing hole 403. The fixing block 402 is rotatably disposed in the fixing hole 403. The side wall of the hand-held part 401 near the sliding rod 2 is provided with a limiting groove 404 to facilitate the sliding rod 2 to pass through and move forward and backward. The end of the sliding rod 2 is disposed in the fixing block 402. The part of the hand-held part 401 located inside the handle is provided with a support shaft 405 to facilitate the rotation of the hand-held part 401. The end of the sliding rod 2 is formed with a limiting ring 21. The fixing block 402 is formed with a slot 406 to prevent the limiting ring 21 from moving forward and backward.

[0049] like Figure 9 As shown, a rotating ring 32 is fixed to the end of the fixed tube 30. The fixed tube 30 and the rotating ring 32 are in communication with each other. The rotating ring 32 and the sleeve 3 are fixedly connected by a fixing strip 311. A smoking hole 312 is formed between the two fixing strips 311. The end of the rotating ring 32 is closedly connected to the sleeve 3.

[0050] like Figures 11-13As shown, the bottom of the support shaft 405 is also provided with a rotation angle control mechanism 7, which comprises a housing 71, a ratchet wheel 72, a clamping pawl 73, an opening pawl 74, a clamping compression spring 75, an opening compression spring 77, and a rotating extrusion block 76. The housing 71 is fixed on the handle 4, the ratchet wheel 72 is rotatably fixed on the inner bottom of the housing 71 through a bearing, the support shaft 405 is fixed on the top of the ratchet wheel 72, the clamping pawl 73 and the opening pawl 74 are located on the lower part of the ratchet wheel 72 and cooperate with the ratchet wheel 72, the clamping compression spring 75 is arranged between the clamping pawl 73 and the side wall of the housing 71, the opening compression spring 77 is arranged between the opening pawl 74 and the side wall of the housing 71, and the rotating extrusion block 76 is arranged between the clamping pawl 73 and the opening pawl 74. The bottom of the rotating extrusion block 76 is provided with a rotating rod 78, which is located on the outer wall of the handle 4. One end of the clamping pawl 73 and the opening pawl 74 is hinged to the housing 71, and the other end is a free end.

[0051] Working principle: as Figures 1-14As shown, in use, by rotating the rotating rod 78 to make the rotating extrusion block 76 extrude the clamping pawl 73, so that the clamping pawl 73 cannot contact the ratchet wheel 72, then open the hand-held part 401, the sliding rod 2 moves forward, and the hand-held part 401 is opened, and the ratchet wheel 72 can be counterclockwise rotated due to the engagement of the opening pawl 74, when the main jaw 1 is adjusted to the required opening angle, the ratchet wheel 72 cannot be clockwise rotated due to the lack of space for the opening pawl 74 to rotate, and the opening pawl 74 is engaged in the counterclockwise direction, so that the angle cannot be changed at will, so that the main jaw 1 can maintain the angle unchanged, maintain the opening degree, prevent the sudden closing caused by accidental operation such as hand slip from causing surgical risks or the sudden opening degree from affecting the surrounding tissues, when clamping is needed, only need to rotate the rotating rod 78 to make the rotating extrusion block 76 extrude the opening pawl 74, so that the opening pawl 74 cannot contact the ratchet wheel 72, then close the hand-held part 401, the sliding rod 2 moves backward, and the ratchet wheel 72 can be clockwise rotated due to the engagement of the clamping pawl 73, when the main jaw 1 is closed to the required opening angle, the ratchet wheel 72 cannot be counterclockwise rotated due to the lack of space for the clamping pawl 73 to rotate, and the clamping pawl 73 is engaged in the clockwise direction, so that the angle cannot be changed at will, so that the main jaw 1 can maintain the angle unchanged, maintain the closing angle, prevent the over-closing caused by accidental operation such as hand slip from causing excessive heat damage or the opening degree being too large to achieve the effect of electrocoagulation, which can reduce the fatigue of the operator, when lighting is needed, only need to turn on the illuminating lamp to illuminate the surgical area, avoid the problem of external light source blocking, ensure the clear visibility of deep or narrow surgical field, and improve the surgical precision, when smoking is needed, the three-way valve 41 is rotated to the smoke outlet 413, so that the smoke is discharged from the smoke outlet 413 through the smoke suction channel 60, when liquid suction is needed, the three-way valve 41 is rotated to the liquid outlet 412, so that the liquid is discharged from the liquid outlet 412 through the liquid suction channel 6, so that the smoke suction and liquid suction can be processed separately, and the clear surgical field is always maintained, thereby ensuring the efficiency of the operation with the embedded head.

Claims

1. A bipolar electrocautery clamp, characterized in that, It includes a main clamp head (1), a sliding rod (2), a cannula (3), a handle (4), and a light (5). The end of the cannula (3) is located inside the handle (4). The sliding rod (2) is slidably located inside the cannula (3). The main clamp head (1) includes two sub-clamp heads (11). The main clamp head (1) is located at the front end of the cannula (3). The sliding rod (2) controls the opening and closing of the two sub-clamp heads (11) by sliding back and forth. The light (5) is located at the front end of the cannula (3). A liquid suction channel (6) is formed between the cannula (3) and the sliding rod (2). The outer side of the sleeve (3) is also provided with a fixing tube (30), and the lighting lamp (5) is fixed on the front wall of the fixing tube (30). A smoking channel (60) is formed between the fixing tube (30) and the sleeve (3). The handle (4) is provided with a three-way valve (41), which is divided into an inlet (411), a liquid outlet (412) and a smoke outlet (413). The liquid suction channel (6) and the smoke suction channel (60) are both connected to the inlet of the three-way valve (41). The control handle of the three-way valve (41) is located on the outside of the handle (4). The sleeve (3) has two symmetrical extension plates (31) at the front end, and two sub-clamp heads (11) are hinged by a fixing pin. The front end of one sub-clamp head (11) is hinged to the front end of the sliding rod (2) by a fixing pin, and the other sub-clamp head (11) is hinged to the extension plate (31) by a fixing pin. The handle (4) is provided with a forward and backward movement control mechanism (40), which includes a hand-held part (401) and a fixing block (402). The top of the hand-held part (401) is provided with a fixing hole (403), and the fixing block (402) is rotatably disposed in the fixing hole (403). The side wall of the hand-held part (401) near the sliding rod (2) is provided with a limiting groove (404) to facilitate the sliding rod (2) to pass through and move forward and backward. The end of the sliding rod (2) is disposed in the fixing block (402). The part of the hand-held part (401) located inside the handle is provided with a support shaft (405) to facilitate the rotation of the hand-held part (401). The bottom of the support shaft (405) is also provided with a rotation angle control mechanism (7). The rotation angle control mechanism (7) includes a housing (71), a ratchet (72), a clamping pawl (73), an opening pawl (74), a clamping compression spring (75), an opening compression spring (77), and a rotating squeezing block (76). The housing (71) is fixed on the handle (4). The ratchet (72) is rotatably fixed to the inner bottom of the housing (71) by a bearing. The support shaft (405) is fixed to the top of the ratchet (72). The clamping pawl (73) is rotatably fixed to the bottom of the housing (71). Both the 73 and the opening pawl (74) are located at the lower part of the ratchet (72) and cooperate with the ratchet (72). The clamping compression spring (75) is located between the clamping pawl (73) and the side wall of the housing (71). The opening compression spring (77) is located between the opening pawl (74) and the side wall of the housing (71). The rotating squeezing block (76) is located between the clamping pawl (73) and the opening pawl (74). The bottom of the rotating squeezing block (76) is provided with a rotating rod (78). The rotating rod (78) is located on the outer wall of the handle (4). The end of the fixed tube (30) is fixed with a rotating ring (32). The fixed tube (30) and the rotating ring (32) are in communication with each other. The rotating ring (32) and the sleeve (3) are fixedly connected by a fixing strip (311). A smoking hole (312) is formed between the two fixing strips (311).

2. The bipolar electrocoagulation clamp according to claim 1, characterized in that, The width of the sub-clamp head (11) gradually decreases along the direction from the bottom to the head.

3. The bipolar electrocoagulation clamp according to claim 1, characterized in that, The clamping pawl (73) and the opening pawl (74) are hinged at one end to the housing (71) and at the other end to be free.

4. The bipolar electrocoagulation clamp according to claim 1, characterized in that, The end of the sliding rod (2) is formed with a limiting ring (21), and the fixing block (402) is formed with a groove (406) to prevent the limiting ring (21) from moving back and forth.

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