Operating forceps for temporal-mandibular arthroscopic glide membrane chondroma operation

Abstract

The invention relates to the technical field of surgical instruments, in particular to operating forceps for temporal-mandibular arthroscopic glide membrane chondroma surgery, which comprise a forceps head assembly, a rotating sleeve, a fixed block, an arc-shaped rod, a gas-driven unit and an adjustable elbow, the forceps head assembly is a working end of the operating forceps; the rotating sleeve is of a cylindrical structure and is fixedly arranged at the tail of the tong head assembly. The fixed block is fixedly arranged at one end of the rotating sleeve away from the tong head assembly; one end of the arc-shaped rod is fixedly connected with the fixed block, and the axis of the arc-shaped rod and the axis of the rotating sleeve are collinear; the gas driving unit is arranged on one side of the arc-shaped rod and used for driving the arc-shaped rod to rotate around the axis of the arc-shaped rod. The adjustable bent pipe is arranged on the side, away from the tong head assembly, of the rotating sleeve. The device can meet the path requirement of a complex anatomical space, can improve the lesion tissue removal efficiency through angle adjustment, greatly reduces the secondary operation frequency, and gives consideration to the operation flexibility and the removal accuracy at the same time.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of surgical instruments, in particular to a surgical forceps for temporomandibular joint arthroscopic synovial chondroma surgery. BACKGROUND

[0002] The existing surgical forceps are classified according to structures and mainly divided into straight-line type and corner type, but in many surgeries, the shape of the surgical forceps is always fixed, and cannot adapt to the corresponding surgical scene.

[0003] A minimally invasive needle holding forceps for adjustable angle transnasal endoscopic surgery is disclosed in Chinese Patent No. CN218247282U, which comprises a first hand grip and a limiting plate, the inside of the first hand grip is provided with a nano anti-slip layer, and the front end of the first hand grip is provided with a first forceps arm, the inside of the first forceps arm is provided with an adjusting assembly for adjusting the angle, the adjusting assembly comprises a latch, a transmission shaft, a push plate and a support plate, the end of the latch is provided with a transmission shaft, and the end of the transmission shaft is provided with a push plate, the upper end of the push plate is provided with a support plate, the left and right ends of the first forceps arm are provided with sliding channels, and the upper end of the sliding channel is provided with a sliding block, the right end of the sliding block is provided with a connecting block, and the right end of the connecting block is provided with a forceps handle torsional spring, the left end of the first forceps arm is provided with a storage battery, the limiting plate is installed on the inside upper end of the first forceps arm, the right side of the first hand grip is connected with a second hand grip through a spring, the upper end of the second hand grip is provided with a second forceps arm, and the top end of the second forceps arm is provided with a placing frame, and the left front end of the placing frame is provided with a support arm.

[0004] The above scheme can adjust the angle of the forceps mouth according to the needs, and can also be applied to the surgical forceps, but due to the large structure of the driving forceps mouth adjustment, the application range is small in the actual surgical process, such as when performing temporomandibular joint arthroscopic synovial chondroma surgery, when cleaning the lesion in the medial sulcus, the surgical forceps head needs to be bent and enter the medial sulcus downward for cleaning, but there is no surgical forceps that meets the requirements in the prior art, and even if the surgical forceps head can be bent, when the lesion tissue is cleaned, the clamping angle of the forceps head will deviate from the lesion position, the existing treatment method is to adjust the position of the surgical forceps so that the clamping angle of the forceps head can adapt to the lesion position, but the operation difficulty is large, and the lesion tissue cannot be completely cleaned. SUMMARY

[0005] To solve the above problems, the utility model provides a kind of surgery forceps for temporomandibular joint arthroscopy under synovial chondroma surgery, the cooperative structure of adjustable elbow pipe, rotating sleeve and jaw assembly is integrated, and the accurate operation of surgery forceps in narrow space such as medial gutter of temporomandibular joint is realized: adjustable elbow pipe can be bent flexibly by control button, and jaw assembly is driven to smoothly and deeply enter narrow lesion area from initial straight state, the problem that traditional instrument is difficult to reach target position due to structural limitation is solved;Rotating sleeve can drive jaw assembly to rotate under the drive of gas drive unit, to ensure that its occlusal surface is perpendicular to lesion tissue, to maximize single clamping range to reduce residual.

[0006] To solve the above problems, the utility model provides a kind of surgery forceps for temporomandibular joint arthroscopy under synovial chondroma surgery, the cooperative structure of adjustable elbow pipe, rotating sleeve and jaw assembly is integrated, and the accurate operation of surgery forceps in narrow space such as medial gutter of temporomandibular joint is realized: adjustable elbow pipe can be bent flexibly by control button, and jaw assembly is driven to smoothly and deeply enter narrow lesion area from initial straight state, the problem that traditional instrument is difficult to reach target position due to structural limitation is solved;Rotating sleeve can drive jaw assembly to rotate under the drive of gas drive unit, to ensure that its occlusal surface is perpendicular to lesion tissue, to maximize single clamping range to reduce residual. Jaw assembly is the working end of surgery forceps. Rotating sleeve is cylindrical structure and is fixedly arranged at the tail of jaw assembly. Fixed block is fixedly arranged at the end of rotating sleeve away from jaw assembly. One end of arc-shaped rod is fixedly connected with fixed block, and the axis of arc-shaped rod is collinear with the axis of rotating sleeve. Gas drive unit is arranged on one side of arc-shaped rod and is used to drive arc-shaped rod to rotate around the axis of arc-shaped rod. Adjustable elbow pipe is arranged on the side of rotating sleeve away from jaw assembly.

[0007] Preferably, gas drive unit includes arc-shaped shell and opening. Arc-shaped shell is arranged on one end of rotating sleeve around the axis of rotating sleeve, arc-shaped rod extends into arc-shaped shell and is in sliding fit with arc-shaped shell, and the end of arc-shaped rod in arc-shaped shell and arc-shaped shell form gas drive cavity. Opening is formed on the side wall of arc-shaped shell and is in communication with gas drive cavity.

[0008] Preferably, jaw assembly includes lower clamp, rotating groove, upper clamp and rotating unit. Lower clamp is fixedly arranged at the end of rotating sleeve. Rotating groove is circular structure and is formed in lower clamp. One end of upper clamp is rotatably arranged in rotating groove. Rotating unit is arranged on one side of rotating groove and is used to drive upper clamp to rotate.

[0009] Preferably, rotating unit includes arc-shaped slot and arc-shaped tooth. Arc-shaped slot is formed on one side of rotating groove, and a plurality of meshing teeth are evenly formed on the end of upper clamp located in rotating groove. Arc-shaped tooth is rotatably arranged in arc-shaped slot around the axis of arc-shaped slot, and arc-shaped tooth is in meshing engagement with meshing teeth on upper clamp.

[0010] Preferably, the first traction rope and the second traction rope are respectively arranged at two ends of the arc-shaped tooth.

[0011] Preferably, the rotating unit further comprises a first extension sleeve, a second extension sleeve, a first traction disc and a second traction disc. The first extension sleeve is arranged in the rotating sleeve along the extension direction of the rotating sleeve. The second extension sleeve is arranged in parallel with one side of the first extension sleeve. The first traction disc is arranged in the first extension sleeve along the extension direction of the first extension sleeve, and the end of the first traction rope away from the arc-shaped tooth is fixedly arranged on the first traction disc. The second traction disc is arranged in the second extension sleeve along the extension direction of the second extension sleeve, and the end of the second traction rope away from the arc-shaped tooth is fixedly arranged on the second traction disc, and the first extension sleeve is communicated with the second extension sleeve.

[0012] Preferably, a rubber ring is sleeved on the periphery of the first traction disc and the second traction disc.

[0013] Preferably, an embedded shell is arranged at one end of the rotating sleeve, the embedded shell is embedded in the rotating sleeve and rotates with the rotating sleeve, a partition plate is fixedly arranged in the embedded shell, the embedded shell is divided into a first air cavity and a second air cavity by the partition plate, the first extension sleeve is communicated with the first air cavity, and the second extension sleeve is communicated with the second air cavity.

[0014] Preferably, two limiting blocks are fixedly arranged at the bottom of the rotating sleeve, the included angle between the two limiting blocks is less than 180 degrees, and the two limiting blocks are located on both sides of the partition plate and limit the partition plate.

[0015] Preferably, a fixed ring is fixedly arranged in the adjustable elbow, and the fixed ring is fixedly connected with the embedded shell.

[0016] The beneficial effects of the present application compared with the prior art are: 1. The present application realizes precise operation of the surgical forceps in the medial space of the temporomandibular joint and the like narrow space by integrating the cooperative structure of the adjustable elbow, the rotating sleeve and the jaw assembly: the adjustable elbow can be flexibly bent by the control button, driving the jaw assembly to smoothly and deeply enter the narrow lesion area from the initial straight state, solving the problem that the traditional instrument is difficult to reach the target position due to structural limitations; the rotating sleeve can drive the jaw assembly to rotate under the drive of the air driving unit, ensuring that the occlusal surface of the jaw assembly is perpendicular to the lesion tissue, maximizing the single clamping range to reduce the residual; the cooperation of the three can not only adapt to the path requirements of the complex anatomical space, but also improve the efficiency of lesion tissue removal through angle adjustment, greatly reducing the frequency of secondary operation, while considering the operation flexibility and removal accuracy, significantly optimizing the implementation effect of the arthroscopic synovial chondroma surgery of the temporomandibular joint.

[0017] 2. By the linkage design of the air source type driving system and the arc-shaped rod, traction rope and other components, the stable and controllable adjustment of the jaw assembly angle and the opening and closing action are realized: the air drive unit drives the arc-shaped rod to slide through the change of air pressure, and drives the rotating sleeve to accurately adjust the angle of the jaw; the second pump body controls the traction rope to pull the arc-shaped teeth through the air pressure conduction of two air cavities and two extension sleeves, to realize the stable opening and closing of the upper and lower clamps. This full pneumatic control mode avoids the infection risk caused by the leakage of the hydraulic system, and the rubber ring sealing and the sub-cavity plate structure guarantee the efficiency of air pressure conduction, so that the jaw can flexibly adjust the posture in a narrow space and stably complete the clamping action, improving the safety and reliability of the operation.

[0018] 3. Through the optimization of the limiting block, embedded shell and other detailed structures, the stability and adaptability of the instrument in complex operation are further guaranteed: the limiting block limits the rotation angle of the rotating sleeve, ensures that the sub-cavity plate always maintains unobstructed air path, and avoids the functional failure caused by excessive angle adjustment; the cooperation of the embedded shell and the fixed ring makes the air path assembly fixed when the rotating sleeve rotates, ensuring the continuity of air pressure driving. These designs make the surgical forceps meet the flexibility requirements of the medial gutter of the temporomandibular joint surgery while always maintaining structural stability, reducing the risk of tissue damage caused by instrument shaking or jamming during operation, and providing reliable protection for delicate surgical operations. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a perspective view of a surgical forceps for a synovial chondroma surgery under a temporomandibular joint arthroscopy according to the present application.

[0020] Figure 2 is a cutaway perspective view of a surgical forceps for a synovial chondroma surgery under a temporomandibular joint arthroscopy according to the present application.

[0021] Figure 3 is a perspective view of a surgical forceps for a synovial chondroma surgery under a temporomandibular joint arthroscopy according to the present application. Figure 2 is a partial enlarged view of position A in the surgical forceps for a synovial chondroma surgery under a temporomandibular joint arthroscopy according to the present application.

[0022] Figure 4 is a perspective view of a surgical forceps for a synovial chondroma surgery under a temporomandibular joint arthroscopy according to the present application, after removing the control handle and the adjustable elbow.

[0023] Figure 5 is a partial enlarged view of position B in the surgical forceps for a synovial chondroma surgery under a temporomandibular joint arthroscopy according to the present application. Figure 4

[0024] Figure 6 is a perspective view of a jaw assembly of a surgical forceps for a synovial chondroma surgery under a temporomandibular joint arthroscopy according to the present application.

[0025] Figure 7 ​It is the cross section perspective view of the jaw assembly of the surgical forceps for the synovial chondroma surgery under the temporomandibular joint arthroscopy.

[0026] Figure 8 It is the cross section perspective view of the jaw assembly of the surgical forceps for the synovial chondroma surgery under the temporomandibular joint arthroscopy. Figure 7 The local enlarged view of the C in the middle.

[0027] Figure 9 It is the cross section perspective view of the jaw assembly of the surgical forceps for the synovial chondroma surgery under the temporomandibular joint arthroscopy. Figure 7 The local enlarged view of the D in the middle.

[0028] Figure 10 It is the exploded view of the jaw assembly of the surgical forceps for the synovial chondroma surgery under the temporomandibular joint arthroscopy.

[0029] The label in the figure is: 1, jaw assembly; 11, lower clamp; 111, rotating groove; 12, upper clamp; 13, rotating unit; 131, arc-shaped groove; 132, arc-shaped tooth; 133, first traction rope; 134, second traction rope; 135, first extension sleeve; 136, second extension sleeve; 137, first traction disc; 138, second traction disc; 139, rubber ring; 14, embedded shell; 141, cavity plate; 142, air vent; 15, limiting block; 16, fixed ring; 2, rotating sleeve; 21, fixed block; 22, arc-shaped rod; 23, air drive unit; 231, arc-shaped shell; 232, opening; 233, connecting pipe; 3, adjustable elbow; 4, control handle. DETAILED DESCRIPTION

[0030] In order to further understand the features, technical means and specific purposes and functions achieved by the present application, the present application will be described in further detail below with reference to the drawings and specific embodiments.

[0031] Referring to Figures 1-3 , Figure 9 and Figure 10 : a surgical forceps for the synovial chondroma surgery under the temporomandibular joint arthroscopy, comprising a jaw assembly 1, a rotating sleeve 2, a fixed block 21, an arc-shaped rod 22, an air drive unit 23 and an adjustable elbow 3; The jaw assembly 1 is the working end of the surgical forceps; The rotating sleeve 2 is a cylindrical structure and is fixedly arranged at the tail of the jaw assembly 1; The fixed block 21 is fixedly arranged at the end of the rotating sleeve 2 away from the jaw assembly 1; One end of the arc-shaped rod 22 is fixedly connected with the fixed block 21, and the axis of the arc-shaped rod 22 is collinear with the axis of the rotating sleeve 2; The air drive unit 23 is arranged on one side of the arc-shaped rod 22 and is used to drive the arc-shaped rod 22 to rotate around the axis of the arc-shaped rod 22; The adjustable elbow pipe 3 is arranged at the side of the rotating sleeve 2 away from the jaw assembly 1.

[0032] In the current surgical instrument system, the surgical forceps, as the basic and core operating tool, has certain functional adaptability, that is, it can adjust the jaw angle according to the basic needs of the surgical operation, and can also be matched with other auxiliary instruments or technologies for surgical operation process, but from the actual clinical application scene, the short board in the design significantly restricts the use effect. Among them, the structure size of the driving jaw angle adjustment is too large, which is one of the core problems. This design defect directly leads to the fact that the surgical forceps are greatly reduced in application range in the operation scene with limited operation space, and it is difficult to meet the requirements of instrument flexibility and space adaptability for fine surgery.

[0033] Taking the typical fine surgery of synovial chondromatosis under temporomandibular joint arthroscopy as an example, the operation area of this surgery is concentrated in the temporomandibular joint, which is an anatomical structure with complex structure and narrow space. Especially when cleaning the lesion tissue in the medial sulcus, the precision and form adaptability of the instrument are required. From the operation logic, in order to effectively remove the lesion tissue in the medial sulcus, the head of the surgical forceps needs to be flexibly bent and accurately inserted into the narrow space of the medial sulcus to ensure that the jaw can directly act on the lesion area. However, the surgical forceps in the existing technical system cannot meet this key operation requirement, either the head cannot realize the bending angle conforming to the operation path, or the bending structure will interfere with the surrounding tissue in the narrow space, resulting in that the instrument cannot reach the lesion position smoothly.

[0034] Even if part of the surgical forceps can realize the bending of the head through special design, in the subsequent operation of removing the lesion tissue, new problems still emerge: such as the actual clamping angle of the jaw head often deviates from the target position of the lesion tissue, resulting in that the lesion tissue cannot be completely removed. The generation of this deviation is on the one hand due to the lack of sufficient stability of the bending structure in the operation process, which leads to the fact that the posture of the jaw head is easily affected by external force and deviates; on the other hand, due to the limited surgical field of view, the operator cannot accurately judge the relative position of the jaw head and the lesion tissue in real time, which further aggravates the positioning deviation.

[0035] In view of this problem, the existing clinical operation adopts a treatment method of repeatedly adjusting the overall position of the surgical forceps to try to correct the clamping position of the forceps head to the lesion position. However, this treatment method has obvious disadvantages: first, the operation difficulty is extremely great, the adjustment process requires the operator to have extremely high hand stability and operation proficiency, and multiple adjustments consume a large amount of operation time and prolong the operation cycle; second, even after multiple adjustments, it is difficult to completely ensure that the forceps head can accurately align with the lesion tissue, and it is easy to cause incomplete removal of the lesion tissue. The lesion tissue that is not completely removed not only may affect the operation treatment effect, but also may increase the risk of postoperative recurrence, which poses a potential threat to the postoperative recovery and long-term health of the patient.

[0036] In order to avoid the above situation, the structure of the existing surgical forceps is optimized and designed, so that the surgical forceps in the present application can be bent as needed and inserted into the medial sulcus, and the cutting angle of the forceps head assembly 1 can also be adjusted, so that the forceps head assembly 1 can completely clamp the lesion tissue in the medial sulcus, reducing the probability of residual lesion components in the medial sulcus. The specific structure and working process of the present application are as follows: A control handle 4 is arranged at the end of the adjustable elbow pipe 3 away from the rotating sleeve 2, and a button is arranged on the control handle 4. By pressing the button, the adjustable elbow pipe 3 is bent. The adjustable elbow pipe 3 is a prior art and has various forms, which can be selected as needed during production. In use, first hold the handle of the surgical forceps, at this time the adjustable elbow pipe 3 is in a straight line structure, then extend the forceps head assembly 1 near the medial sulcus, press the button to make the adjustable elbow pipe 3 bend, and the forceps head assembly 1 arranged at the end of the adjustable elbow pipe 3 is gradually driven by the adjustable elbow pipe 3 to penetrate into the medial sulcus. When the forceps head assembly 1 reaches the lesion tissue position in the medial sulcus, the adjustable elbow pipe 3 stops bending. Then observe the angle relationship between the forceps head assembly 1 and the lesion tissue in the medial sulcus. The forceps head assembly 1 has a biting surface when clamping the lesion tissue. When the biting surface is perpendicular to the lesion tissue, the lesion tissue area that can be clamped by the forceps head assembly 1 is the largest. Therefore, when the biting surface and the lesion tissue are in a non-perpendicular state, the lesion tissue cannot be completely clamped by the forceps head assembly 1, that is, the lesion tissue close to the forceps head assembly 1 can be completely clamped by the forceps head assembly 1, but the lesion tissue away from the forceps head assembly 1 cannot be clamped by the forceps head assembly 1, resulting in residual lesion tissue after clamping by the forceps head assembly 1, which requires secondary clamping of the residual lesion tissue. The operation time is long, and the probability of residual lesion tissue is high. In the present application, the forceps head assembly 1 can be rotated under the driving of the rotating sleeve 2, so that the biting surface in the forceps head assembly 1 can be perpendicular to the lesion tissue, so that the lesion tissue area clamped by the forceps head assembly 1 in a single operation reaches the maximum, reduces the blind area when clamping the lesion tissue, reduces the number of secondary clamping, shortens the operation time, and reduces the probability of residual lesion tissue.

[0037] Reference Figures 4-6and Figure 10 The gas driving unit 23 comprises an arc-shaped shell 231 and an opening 232; The arc-shaped shell 231 is arranged at one end of the rotating sleeve 2 around the axis of the rotating sleeve 2, the arc-shaped rod 22 extends into the arc-shaped shell 231 and is in sliding fit with the arc-shaped shell 231, and a gas driving cavity is formed between the end of the arc-shaped rod 22 in the arc-shaped shell 231 and the arc-shaped shell 231. The opening 232 is arranged on the side wall of the arc-shaped shell 231 and is in communication with the gas driving cavity.

[0038] A connecting pipe 233 in communication with the gas driving cavity is arranged on the opening 232, the connecting pipe 233 is used for supplying gas into the arc-shaped shell 231 or extracting gas from the arc-shaped shell 231, a first pump body is arranged on one side of the connecting pipe 233, when the connecting pipe 233 extracts air from the arc-shaped shell 231, the arc-shaped rod 22 slides into the arc-shaped shell 231, when the connecting pipe 233 fills air from the outside into the arc-shaped shell 231, the arc-shaped rod 22 slides out of the arc-shaped shell 231, the arc-shaped rod 22 slides in the arc-shaped shell 231 to make the rotating sleeve 2 rotate, and then the jaw assembly 1 rotates, so that the occlusal surface on the jaw assembly 1 can completely match the lesion assembly.

[0039] Referring to Figure 7 and Figure 8 The jaw assembly 1 comprises a lower clamp 11, a rotating groove 111, an upper clamp 12 and a rotating unit 13. The lower clamp 11 is fixedly arranged at the end of the rotating sleeve 2. The rotating groove 111 is in circular structure and is arranged in the lower clamp 11. One end of the upper clamp 12 is rotatably arranged in the rotating groove 111. The rotating unit 13 is arranged on one side of the rotating groove 111 and is used for driving the upper clamp 12 to rotate.

[0040] When the upper clamp 12 rotates in the rotating groove 111, the included angle between the extension direction of the upper clamp 12 and the extension direction of the lower clamp 11 continuously changes, when the extension direction of the upper clamp 12 is parallel to the extension direction of the lower clamp 11, the occlusal surface is formed between the upper clamp 12 and the lower clamp 11.

[0041] Referring to Figure 8 The rotating unit 13 comprises an arc-shaped groove 131 and an arc-shaped tooth 132. The arc-shaped groove 131 is arranged on one side of the rotating groove 111, and a plurality of meshing teeth are uniformly arranged on the end of the upper clamp 12 in the rotating groove 111. The arc-shaped tooth 132 is rotatably arranged in the arc-shaped groove 131 around the axis of the arc-shaped groove 131, and the arc-shaped tooth 132 is in meshing fit with the meshing teeth on the upper clamp 12.

[0042] By setting the rotating arc-shaped teeth 132 in the arc-shaped slot 131, the upper clamp 12 is rotated by the rotation of the arc-shaped teeth 132, so that the upper clamp 12 and the lower clamp 11 are opened or closed, and the upper clamp 12 and the lower clamp 11 are closed to form a bite surface.

[0043] With reference to Figure 8 The first traction rope 133 and the second traction rope 134 are respectively arranged at two ends of the arc-shaped teeth 132.

[0044] One end of the first traction rope 133 is fixedly connected with one end of the arc-shaped teeth 132, and one end of the second traction rope 134 is fixedly connected with the other end of the arc-shaped teeth 132. When the upper clamp 12 and the lower clamp 11 need to be opened, the second traction rope 134 pulls the arc-shaped teeth 132, and the first traction rope 133 is in a following state, and when the upper clamp 12 and the lower clamp 11 need to be closed, the first traction rope 133 pulls the arc-shaped teeth 132, and the second traction rope 134 is in a following state.

[0045] With reference to Figure 8 And Figure 9 The rotating unit 13 further comprises a first extension sleeve 135, a second extension sleeve 136, a first traction disc 137 and a second traction disc 138. The first extension sleeve 135 is arranged in the rotating sleeve 2 along the extension direction of the rotating sleeve 2. The second extension sleeve 136 is arranged on one side of the first extension sleeve 135 in parallel. The first traction disc 137 is arranged in the first extension sleeve 135 in sliding mode along the extension direction of the first extension sleeve 135, and the end of the first traction rope 133 away from the arc-shaped teeth 132 is fixedly arranged on the first traction disc 137. The second traction disc 138 is arranged in the second extension sleeve 136 in sliding mode along the extension direction of the second extension sleeve 136, and the end of the second traction rope 134 away from the arc-shaped teeth 132 is fixedly arranged on the second traction disc 138, and the first extension sleeve 135 is communicated with the second extension sleeve 136.

[0046] The second pump body is further arranged in the surgical forceps, the first extension sleeve 135 is communicated with the second extension sleeve 136 through the second pump body, when the gas in the first extension sleeve 135 is extracted, the first traction disc 137 slides into the first extension sleeve 135, at the same time, the second pump body discharges the gas extracted from the first extension sleeve 135 into the second extension sleeve 136, so that the second traction disc 138 in the second extension sleeve 136 gradually moves towards the arc-shaped teeth 132 under the action of the gas pressure, thereby achieving the driving of the arc-shaped teeth 132.

[0047] It is worth noting that the second pump body is a gas source type pump body, because the surgical forceps need to be inserted into the medial sulcus to treat the lesion tissue during the operation. If there is a leak between the first extension sleeve 135 and the first traction disc 137 or between the second extension sleeve 136 and the second traction disc 138, only air leakage will occur. If a hydraulic pump body is used, when there is a leak between the first extension sleeve 135 and the first traction disc 137 or between the second extension sleeve 136 and the second traction disc 138, the liquid used to drive the first traction disc 137 or the second traction disc 138 to move will flow out and be located inside the rotating sleeve 2, but there is still a possibility that the liquid will flow into the patient's wound, which can easily cause the patient to develop an infection after the operation. Therefore, using a gas source type pump body can reduce the risk of surgery.

[0048] With reference to Figure 9 : A rubber ring 139 is sleeved on the periphery of the first traction disc 137 and the second traction disc 138.

[0049] By sleeving the rubber ring 139 on the outside of the first traction disc 137 and the second traction disc 138, it is ensured that the first traction disc 137 will not rotate slowly when sliding in the first extension sleeve 135 or the second traction disc 138 will not rotate slowly when sliding in the second extension sleeve 136 due to air leakage.

[0050] With reference to Figure 9 : An embedded shell 14 is arranged at one end of the rotating sleeve 2, the embedded shell 14 is embedded in the rotating sleeve 2 and rotates with the rotating sleeve 2, a partition plate 141 is fixedly arranged in the embedded shell 14, the embedded shell 14 is divided into a first gas cavity and a second gas cavity by the partition plate 141, the first extension sleeve 135 communicates with the first gas cavity, and the second extension sleeve 136 communicates with the second gas cavity.

[0051] Ventilation openings 142 are arranged on the first cavity and the second cavity, and the ventilation openings 142 on the first cavity and the ventilation openings 142 on the second cavity are respectively communicated with two ends of the second pump body. Since the rotating sleeve 2 can rotate around its own axis, the jaw assembly 1 arranged at the end of the rotating sleeve 2 also rotates with the rotating sleeve 2, but the upper clamp 12 and the lower clamp 11 in the jaw assembly 1 need to be driven by the arc-shaped teeth 132 during clamping, so the inner-embedded shell 14 needs to be arranged in the rotating sleeve 2, and the cavity-division plate 141 is arranged in the inner-embedded shell 14 to divide the inner-embedded shell 14 into a first gas cavity and a second gas cavity, so that the first extension sleeve 135 is communicated with the first gas cavity, the second extension sleeve 136 is communicated with the second gas cavity, and the inner-embedded shell 14 does not rotate at all. By arranging the inner-embedded shell 14 and the cavity-division plate 141, it is ensured that when the rotating sleeve 2 rotates, the second pump body can still draw out the gas in the first extension sleeve 135 through the first gas cavity or discharge the air in the second extension sleeve 136 into the first extension sleeve 135 through the first gas cavity, and similarly, the second pump body can also draw out the gas in the second extension sleeve 136 through the second gas cavity or discharge the air in the first extension sleeve 135 into the second extension sleeve 136 through the second gas cavity. It is realized that after the angle of the jaw assembly 1 is adjusted during actual operation, the upper clamp 12 and the lower clamp 11 in the jaw assembly 1 can still be smoothly opened or closed.

[0052] With reference to Figure 9 Two limiting blocks 15 are fixedly arranged at the bottom of the rotating sleeve 2, the included angle between the two limiting blocks 15 is less than 180 degrees, and the two limiting blocks 15 are located on the two sides of the cavity-division plate 141 and limit the cavity-division plate 141.

[0053] When the jaw assembly 1 is in the initial position, the cavity-division plate 141 is located in the middle position of the two limiting blocks 15, and the two limiting blocks 15 are mutually symmetrical about the cavity-division plate 141. During actual operation, when the jaw assembly 1 is sent into the inner side ditch by the adjustable elbow pipe 3 and stopped at the side of the lesion tissue, if there is an inclination between the occlusal surface on the jaw assembly 1 and the lesion tissue, the included angle between the occlusal surface and the lesion tissue is less than 90 degrees, so the angle of the rotating sleeve 2 during adjustment of the jaw assembly 1 is less than 90 degrees, and the two limiting blocks 15 limit the cavity-division plate 141 during rotation, so that the first cavity is always communicated with the first extension sleeve 135, and the second cavity is always communicated with the second extension sleeve 136.

[0054] With reference to Figure 9 and Figure 10 A fixed ring 16 is fixedly arranged in the inside of the adjustable elbow pipe 3, and the fixed ring 16 is fixedly connected with the inner-embedded shell 14.

[0055] The inner-embedded shell 14 is fixed by the fixed ring 16, so that the inner-embedded shell 14 does not rotate when the rotating sleeve 2 rotates.

[0056] Working principle: before using the arthroscopic synovial chondroma surgery forceps, the instrument inspection and initial state setting should be completed: confirm that the components of the forceps head assembly 1, the rotating sleeve 2, the arc-shaped rod 22 and other components are connected perfectly, the rubber ring 139 around the first and second traction discs 138 is not damaged, avoid air leakage when driving by air pressure, at the same time, check that the second pump body, the connecting pipe 233 and the air vent 142 are unobstructed to prevent airway blockage; ensure that the adjustable bend pipe 3 is in a straight structure, the lower clamp 11 of the forceps head assembly 1 is fixed, the upper clamp 12 and the lower clamp 11 are in an open state, and the partition plate 141 in the embedded shell 14 is located in the middle of the two limiting blocks 15, laying a foundation for subsequent operation.

[0057] During formal operation, first hold the control handle 4 at the end of the adjustable bend pipe 3, slowly extend the adjustable bend pipe 3 with the forceps head assembly 1 in a straight line state into the medial gutter near the temporomandibular joint of the patient, avoid touching normal tissues during the process in combination with the arthroscopic field of view; when the forceps head assembly 1 approaches the lesion, press the button on the control handle 4 to drive the adjustable bend pipe 3 to bend, so that the forceps head assembly 1 extends to the deep part of the medial gutter under the drive of the bend pipe, until the arthroscope shows that it reaches the front of the lesion, and the button is released to stop bending.

[0058] Subsequently, the angle between the occlusal surface of the forceps head assembly 1 and the lesion is observed through the arthroscope, if it is not perpendicular, the air-driven unit 23 is started to adjust: when clockwise adjustment is needed, the first pump body extracts the gas in the arc-shaped shell 231 through the connecting pipe 233, so that the arc-shaped rod 22 slides into the arc-shaped shell 231 and drives the rotating sleeve 2 and the forceps head assembly 1 to rotate clockwise; when counterclockwise adjustment is needed, the arc-shaped rod 22 is pushed out by inflating the arc-shaped shell 231, driving the related components to rotate counterclockwise. During adjustment, the embedded shell 14 does not rotate due to the fixation of the fixed ring 16 in the adjustable bend pipe 3, the partition plate 141 rotates with the rotating sleeve 2 and is limited by the limiting block 15 to rotate an angle less than 90°, ensuring that the gas cavity is in communication with the extension sleeve, until the occlusal surface is perpendicular to the lesion, and the air-driven unit 23 stops working.

[0059] Subsequently, the second pump body is started, the second traction disc 138 is pushed to slide by inflating the second extension sleeve 136 through the second gas cavity, at the same time, the first pump body extracts the gas of the first extension sleeve 135 to make the first traction disc 137 slide, the first traction rope 133 rotates the arc-shaped teeth 132, drives the upper clamp 12 to move closer to the fixed lower clamp 11, until the occlusal surface closes to clamp the lesion, during this process, the rubber ring 139 ensures air tightness, and the second pump body avoids liquid leakage and infection. After confirming the stable clamping, the adjustable bend pipe 3 can be restored to a straight line by pressing the button, and then the forceps head assembly 1 and the lesion are slowly withdrawn and removed, if there is residual, repeat the positioning, adjustment and clamping process.

[0060] After the operation, the second pump body is reversely operated to inflate the first extension sleeve 135 and extract the gas in the second extension sleeve 136, so that the upper clamp 12 is opened and the jaw assembly 1 is released; then the gas driving unit 23 is controlled to turn the jaw assembly 1 back to the initial position, the adjustable elbow 3 is adjusted to restore the straight line, and finally the surgical forceps are cleaned and disinfected for subsequent use.

[0061] The above embodiments only express one or several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as the limitation of the protection scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A surgical forceps for a synovial chondroma surgery under a temporomandibular joint arthroscopy, characterized by, The utility model relates to a surgical forceps, including jaw assembly (1), rotating sleeve (2), fixed block (21), arc rod (22), gas drive unit (23) and adjustable elbow (3); Jaw assembly (1) is the working end of surgical forceps; Rotating sleeve (2) is the cylindrical structure and is fixedly arranged at the tail of jaw assembly (1); Fixed block (21) is fixedly arranged at the end of rotating sleeve (2) away from jaw assembly (1); One end of arc rod (22) is fixedly connected with fixed block (21), and the axis of arc rod (22) is collinear with the axis of rotating sleeve (2); Gas drive unit (23) is arranged at one side of arc rod (22) and is used for driving arc rod (22) to rotate around the axis of arc rod (22); Adjustable elbow (3) is arranged at one side of rotating sleeve (2) away from jaw assembly (1).

2. The arthroscopic condyloma pincer according to claim 1, wherein, Gas drive unit (23) includes arc shell (231) and opening (232); Arc shell (231) is arranged at one end of rotating sleeve (2) around the axis of rotating sleeve (2), arc rod (22) extends into arc shell (231) and is in sliding fit with arc shell (231), and the end of arc rod (22) in arc shell (231) forms gas drive cavity between arc shell (231); Opening (232) is formed in the side wall of arc shell (231), and opening (232) is communicated with gas drive cavity.

3. The arthroscopic condyloma pincer according to claim 1, wherein, Jaw assembly (1) includes lower clamp (11), rotating groove (111), upper clamp (12) and rotating unit (13); Lower clamp (11) is fixedly arranged at the end of rotating sleeve (2); Rotating groove (111) is circular structure and is formed in lower clamp (11); One end of upper clamp (12) is rotatably arranged in rotating groove (111); Rotating unit (13) is arranged at one side of rotating groove (111) and is used for driving upper clamp (12) to rotate.

4. The arthroscopic condyloma pincer according to claim 3, wherein, Rotating unit (13) includes arc slot (131) and arc tooth (132); Arc slot (131) is formed at one side of rotating groove (111), and a plurality of meshing teeth are evenly formed on the end of upper clamp (12) in rotating groove (111); Arc tooth (132) is rotatably arranged in arc slot (131) around the axis of arc slot (131), and arc tooth (132) is engaged with the meshing tooth on upper clamp (12).

5. The arthroscopic condyloma pincer according to claim 4, wherein the condyloma pincer is characterized by, First traction rope (133) and second traction rope (134) are arranged at both ends of arc tooth (132) respectively.

6. The arthroscopic condyloma pincer according to claim 5, wherein, Rotating unit (13) further includes first extension sleeve (135), second extension sleeve (136), first traction disc (137) and second traction disc (138); First extension sleeve (135) is arranged in rotating sleeve (2) along the extension direction of rotating sleeve (2); Second extension sleeve (136) is arranged in parallel at one side of first extension sleeve (135); First traction disc (137) is slidably arranged in first extension sleeve (135) along the extension direction of first extension sleeve (135), and the end of first traction rope (133) away from arc tooth (132) is fixedly arranged on first traction disc (137); The second traction disc (138) is arranged in the second extension sleeve (136) in sliding mode along the extension direction of the second extension sleeve (136), the end of the second traction rope (134) away from the arc-shaped teeth (132) is fixedly arranged on the second traction disc (138), and the first extension sleeve (135) is communicated with the second extension sleeve (136).

7. The arthroscopic condyloma pincer according to claim 6, wherein the condyloma pincer is characterized by, The first traction disc (137) and the second traction disc (138) are sleeved with rubber rings (139) on the periphery.

8. The arthroscopic condyloma pincer according to claim 6, wherein, An inner embedding shell (14) is arranged at one end of the rotating sleeve (2), the inner embedding shell (14) is embedded in the rotating sleeve (2) and rotationally matched with the rotating sleeve (2), a cavity dividing plate (141) is fixedly arranged in the inner embedding shell (14), the cavity dividing plate (141) divides the inner embedding shell (14) into a first air cavity and a second air cavity, the first extension sleeve (135) is communicated with the first air cavity, and the second extension sleeve (136) is communicated with the second air cavity.

9. The arthroscopic condyloma pincer according to claim 8, wherein, Two limiting blocks (15) are fixedly arranged at the bottom of the rotating sleeve (2), the included angle between the two limiting blocks (15) is less than 180 degrees, and the two limiting blocks (15) are respectively located on the two sides of the cavity dividing plate (141) and limit the cavity dividing plate (141).

10. The arthroscopic condyloma pincer according to claim 8, wherein the condyloma pincer is characterized by, A fixing ring (16) is fixedly arranged in the adjustable elbow (3), and the fixing ring (16) is fixedly connected with the inner embedding shell (14).

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