Angle-adjustable nucleus pulposus bite forceps

Abstract

The invention discloses an adjustable angle nucleus pulposus biting forceps, belonging to the field of medical instruments. It comprises a fixed handle, characterized in that a movable handle is rotatably connected to the fixed handle, an elastic component is arranged between the fixed handle and the movable handle, a forceps body is fixedly connected to the right end of the fixed handle, a hollow block is rotatably connected to the right end of the forceps body, a circular plate is fixedly connected to the right end of the hollow block, a hollow column is rotatably connected to the right end of the circular plate, and a fixed rod is rotatably connected to the inner wall of the hollow column in a front-to-back symmetrical manner. When the angle of the forceps head needs to be adjusted to meet different practical operation requirements, the connecting rod is rotated by turning the knob, the connecting rod can drive the worm gear and the first connecting shaft to rotate through the worm, the first connecting shaft can drive the connecting column to rotate, the second T-shaped slider slides in the T-shaped slide groove, and the connecting column drives the hollow block, the hollow column and the forceps head to swing, so as to achieve the purpose of adjusting the angle of the forceps head, so that the forceps head swings to a suitable angle to meet different practical operation requirements.

Description

Technical Field

[0001] The invention relates to the field of medical instruments, and more particularly to a pair of angle-adjustable nucleus pulposus biting forceps. Background Art

[0002] Nucleus pulposus forceps are commonly used in discectomy or other spinal surgeries. Its main function is to grasp and remove the nucleus pulposus tissue of the intervertebral disc that has prolapsed or degenerated. The surgeon can control the opening and closing of the jaws through the handle to clamp the nucleus pulposus tissue and remove it to decompress the spinal canal.

[0003] Nucleus pulposus forceps are usually made of stainless steel and have sharp jaws and long handles. However, in actual use, since the forceps rod cannot be bent, the decompression range of the jaws deep into the intervertebral space to clamp the nucleus pulposus tissue is limited, which brings inconvenience to the operator and may lead to incomplete decompression of the intervertebral space and even cause recurrence of intervertebral disc herniation in patients after surgery. Summary of the invention

[0004] In view of the problem that the nucleus pulposus biting forceps existing in the prior art cannot be bent during actual use, the decompression range of the jaws penetrating deep into the intervertebral space to clamp the nucleus pulposus tissue is limited, which brings inconvenience to the operator and may result in incomplete decompression of the intervertebral space and even cause recurrence of intervertebral disc herniation in patients after surgery. The purpose of the present invention is to provide a nucleus pulposus biting forceps with adjustable angle.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] The cam is connected with the movable handle on the fixed handle, and an elastic component is arranged between the fixed handle and the movable handle, and the right end of the fixed handle is fixedly connected with the clamp body, and the right end of the clamp body is rotatably connected with the hollow block, and the right end of the hollow block is fixedly connected with a circular plate, and the right end of the circular plate is rotatably connected with the hollow column, and the inner wall of the hollow column is symmetrically rotatably connected with a fixed rod, and the upper ends of the two fixed rods are fixedly connected with a first gear, and the upper end of the first gear is fixedly connected with a clamp head, and the inner bottom wall of the hollow column is fixedly connected with a support plate, and the upper end of the support plate is slidably connected with a rack plate, and the rack plate and the two first gears are meshed with each other, and the left end of the rack plate is fixedly connected with a first cylinder, and the left end of the first cylinder is fixedly connected with a first T-shaped slider, and the left end of the first cylinder is rotatably connected with the second cylinder through the first T-shaped slider, and the left end of the second cylinder is fixedly connected with a connecting rope, and the connecting rope is inserted in the hollow block and the clamp body;

[0007] The right end of the pliers body is rotatably connected to a connecting column, two arc-shaped blocks are fixedly connected inside the connecting column, the left end of the hollow block is fixedly connected to the connecting column, and the left end of the pliers body is symmetrically fixedly connected to a second T-shaped slider up and down. A T-shaped sliding groove that cooperates with the connecting column is provided on the connecting column, and the connecting rope slides through the two arc-shaped blocks.

[0008] Optionally, a first connecting shaft is fixedly connected to the inner top wall of the connecting column, a worm gear is fixedly connected to the outer surface of the first connecting shaft, a connecting rod is rotatably connected to the middle part of the caliper body, both left and right ends of the connecting rod pass through the caliper body, a knob is fixedly connected to the left end of the connecting rod, a worm is fixedly connected to the right end of the connecting rod, the worm is meshed with the worm gear, and a limit assembly for limiting the worm is provided on the caliper body.

[0009] Optionally, the limiting assembly includes a rectangular block, a rectangular groove is provided on the caliper body, the rectangular block is slidably connected to the inner wall of the rectangular groove, the upper end of the rectangular block is fixedly connected to a second connecting shaft, the second connecting shaft is slidably inserted into the caliper body, the upper end of the second connecting shaft is fixedly connected to a pulling block, a second spring is fixedly connected between the inner wall of the rectangular groove and the rectangular block, the second spring is sleeved on the outside of the second connecting shaft, the lower end of the rectangular block is fixedly connected to a first pin, and the connecting rod is provided with a socket that cooperates with the first pin.

[0010] Optionally, the inner wall of the hollow column is fixedly connected with a gear ring, the inner wall of the hollow column is fixedly connected with a limit plate, the middle part of the limit plate is rotatably connected with a hollow rod, the right end of the hollow rod is fixedly connected with a second gear, and the second gear is meshed with the gear ring.

[0011] Optionally, a connecting rod is slidably connected to the middle part of the pliers body, one end of the connecting rod is slidably inserted in the hollow rod, the connecting rod is symmetrically provided with placement grooves in the upper and lower parts, the inner walls of the two placement grooves are slidably connected with triangular blocks, a first spring is fixedly connected between the inner walls of the placement grooves and the triangular blocks, a stopper is symmetrically fixedly connected to the inner wall of the hollow rod in the upper and lower parts, the vertical surface of the triangular block contacts the vertical surface of the stopper, and the left end of the connecting rod is fixedly connected with a cross block.

[0012] Optionally, the ends of the two triangular blocks that are close to each other are fixedly connected to the same fixing rope, the outer surface of the fixing rope is fixedly connected to a pull rope, the left end of the pull rope passes through the connecting column, the clamp body and the fixed handle, the left end of the pull rope is fixedly connected to a ring, and the fixed handle is provided with a fixing component for fixing the connecting rod.

[0013] Optionally, the fixing assembly includes a fixing plate, which is fixedly connected to the left end of the fixing handle, the left end of the fixing plate is rotatably connected to a disc, the left end of the fixing handle is slidably connected to a mounting block, a sliding groove is provided in the middle of the mounting block, the inner wall of the sliding groove is slidably connected to a sliding block, the rear end of the sliding block is fixedly connected to a handle, the handle is slidably inserted into the mounting block, a third spring is fixedly connected between the inner wall of the sliding groove and the sliding block, the upper end of the sliding block is fixedly connected to a connecting plate, the connecting plate is slidably inserted into the mounting block, the right end of the connecting plate is fixedly connected to an insertion rod, and the disc is provided with a plurality of second slots that cooperate with the insertion rod.

[0014] Optionally, a fixing block is fixedly connected to the inner wall of the hollow column, a first rubber block is fixedly connected to the left end of the fixing block, a second rubber block is fixedly connected to the right end of the second gear, and the second rubber block is in close contact with the first rubber block.

[0015] Optionally, the elastic component includes a first spring sheet and a second spring sheet, the first spring sheet is fixedly connected to a side of the fixed handle close to the movable handle, the second spring sheet is fixedly connected to a side of the movable handle close to the fixed handle, a U-shaped opening is provided at the top end of the first spring sheet, and the top end of the second spring sheet is engaged in the U-shaped opening.

[0016] Optionally, the middle part of the fixed handle is rotatably connected to the first wire wheel and the second wire wheel, the connecting rope passes around the first wire wheel and the second wire wheel in sequence, the right end of the movable handle is fixedly connected to a protective shell, a wire groove is opened in the movable handle, the connecting rope passes through the protective shell and the wire groove in sequence, and one end of the connecting rope is fixedly connected to the bottom end of the movable handle.

[0017] Compared with the prior art, the technical solution provided by the present invention has at least the following beneficial effects:

[0018] In the above scheme, by setting a connecting column, a second T-shaped slider and a T-shaped slide groove, when it is necessary to adjust the angle of the pliers head to adapt to different actual operation requirements, the connecting rod is rotated by the knob, and the connecting rod can drive the worm gear and the first connecting shaft to rotate through the worm, and the first connecting shaft can drive the connecting column to rotate, and the second T-shaped slider slides in the T-shaped slide groove, and the connecting column drives the hollow block, the hollow column and the pliers head to swing, thereby achieving the purpose of adjusting the angle of the pliers head, so that the pliers head can swing to a suitable angle to adapt to different actual operation requirements.

[0019] By setting a second gear and a gear ring, when the pliers head needs to be rotated to adapt to different actual needs, the connecting rod and the hollow rod can be driven to rotate by rotating the cross block, and the hollow rod can drive the gear ring to rotate through the second gear, and the gear ring drives the hollow column to rotate on the circular plate, so as to rotate the pliers head to a suitable angle position. After rotating to a suitable angle, the nucleus pulposus biting forceps can be used conveniently.

[0020] By setting the triangular block and the stopper, the connecting rod and the hollow rod need to be separated before adjusting the angle of the pliers head, otherwise it will affect the angle adjustment of the pliers head. The pull rope is pulled by the circular ring, and the pull rope pulls the fixed rope. The fixed rope pulls the two triangular blocks and the stopper so that they do not contact the stopper, and the connecting rod can be pulled out of the hollow rod. When the hollow column and the pliers head need to be rotated to a certain angle, the cross block is pushed to drive the connecting rod to move, so that one end of the connecting rod is reinserted into the hollow rod. In this process, the stopper presses the triangular block into the placement groove, and the first spring is compressed. When the triangular block passes through the stopper, the triangular block pops out under the action of the first spring, and the stopper limits the triangular block and the connecting rod, so that the hollow rod and the connecting rod can be quickly plugged in and fixed.

[0021] By setting a connecting rope, a first wire wheel and a second wire wheel, when it is necessary to clamp the patient's tissue part through the two forceps heads, the fixed handle and the movable handle are held by hand, and the movable handle is pressed toward the fixed handle, and the elastic component is compressed. Since one end of the connecting rope is fixedly connected to the bottom end of the movable handle, pressing the movable handle can drive the rack plate to move through the connecting rope, and the rack plate clamps the two forceps heads toward the middle through the first gears on both sides. When the connecting rope is being pulled, the first wire wheel and the second wire wheel play a guiding role, so that the connecting rope can form a pulling effect on the hollow rod, which is convenient for the use of the nucleus pulposus biting forceps. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 It is a schematic diagram of a top cross-sectional structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the second T-shaped slider of the present invention;

[0026] Figure 4 It is a schematic diagram of the structure of the limit assembly of the present invention;

[0027] Figure 5 It is a schematic diagram of the front cross-sectional structure of the clamp body, hollow block and hollow column of the present invention;

[0028] Figure 6 It is a schematic structural diagram of the pliers head, the first rubber block and the second rubber block of the present invention;

[0029] Figure 7 It is a schematic diagram of the front cross-sectional structure of the hollow rod and the connecting rod of the present invention;

[0030] Figure 8 It is a schematic diagram of the fixing rope and the pulling rope structure of the present invention;

[0031] Fig. 9 It is a schematic diagram of the structure of the fixing assembly of the present invention;

[0032] Fig.10 It is a schematic structural diagram of the first wire pulley and the second wire pulley of the present invention.

[0033] [Reference Signs]

[0034] 101, fixed handle; 102, movable handle; 103, clamp body; 104, hollow block; 105, round plate; 106, hollow column; 107, fixed rod; 108, first gear; 109, clamp head; 110, support plate; 111, rack plate; 112, first cylinder; 113, first T-shaped slider; 114, second cylinder; 115, connecting rope; 201, connecting column; 202 , second T-shaped slider; 203, T-shaped slide; 204, first connecting shaft; 205, worm gear; 206, connecting rod; 207, knob; 208, worm; 209, gear ring; 210, limit plate; 211, hollow rod; 212, second gear; 213, connecting rod; 214, placement groove; 215, triangular block; 216, first spring; 217, stopper; 218, fixing rope; 2 19. Pull rope; 220. Ring; 221. Fixed block; 222. First rubber block; 223. Second rubber block; 224. First spring piece; 225. Second spring piece; 226. U-shaped mouth; 227. First wire wheel; 228. Second wire wheel; 229. Protective shell; 230. Wire groove; 231. Cross block; 232. Arc block; 300. Limiting assembly; 301. Rectangular block; 302. Rectangular groove; 303. Second connecting shaft; 304. Pull block; 305. Second spring; 306. First latch; 307. Socket; 400. Fixed assembly; 401. Fixed plate; 402. Disc; 403. Mounting block; 404. Sliding groove; 405. Sliding block; 406. Handle; 407. Third spring; 408. Connecting plate; 409. Insert rod; 410. Second slot.

[0035] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0036] The following is a detailed description of an adjustable angle nucleus pulposus bite forceps provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0037] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0038] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0039] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0040] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0041] like Figures 1 to 10As shown, an embodiment of the present invention provides an adjustable angle nucleus pulposus biting forceps, comprising a fixed handle 101, characterized in that a movable handle 102 is rotatably connected to the fixed handle 101, an elastic component is provided between the fixed handle 101 and the movable handle 102, a clamp body 103 is fixedly connected to the right end of the fixed handle 101, a hollow block 104 is rotatably connected to the right end of the clamp body 103, a circular plate 105 is fixedly connected to the right end of the hollow block 104, a hollow column 106 is rotatably connected to the right end of the circular plate 105, a fixed rod 107 is rotatably connected to the inner wall of the hollow column 106 in a front-to-back symmetrical manner, and the upper ends of the two fixed rods 107 are fixedly connected to the first gear 108 The upper end of the first gear 108 is fixedly connected to a clamp head 109, the inner bottom wall of the hollow column 106 is fixedly connected to a support plate 110, the upper end of the support plate 110 is slidably connected to a rack plate 111, the rack plate 111 is meshed with the two first gears 108, the left end of the rack plate 111 is fixedly connected to a first cylinder 112, the left end of the first cylinder 112 is fixedly connected to a first T-shaped slider 113, the left end of the first cylinder 112 is rotatably connected to a second cylinder 114 through the first T-shaped slider 113, the left end of the second cylinder 114 is fixedly connected to a connecting rope 115, and the connecting rope 115 is inserted into the hollow block 104 and the clamp body 103.

[0042] The right end of the clamp body 103 is rotatably connected to a connecting column 201, and two arc blocks 232 are fixedly connected to the connecting column 201. The left end of the hollow block 104 is fixedly connected to the connecting column 201. The left end of the clamp body 103 is symmetrically fixedly connected to a second T-shaped slider 202. A T-shaped groove 203 that cooperates with the connecting column 201 is provided on the connecting column 201, and the connecting rope 115 slides through the two arc blocks 232.

[0043] When the nucleus pulposus tissue needs to be clamped out, the surgeon can control the opening and closing of the jaws of the movable handle 102. When the movable handle 102 approaches the fixed handle 101, the elastic component is compressed and the elastic potential energy increases, so that the fixed handle 101 drives the connecting rope 115 to contract, and the connecting rope 115 drives the second cylinder 114, so that the second cylinder 114 drives the first cylinder 112 through the first T-shaped slider 113, and the first cylinder 112 drives the rack plate 111 to move to the left end. When the rack plate 111 moves, it drives the two first gears 108, so that the two first gears 108 simultaneously drive the two forceps heads 109 to move to the left end to clamp the nucleus pulposus tissue. When the angle of the pliers head 109 needs to be adjusted according to actual operation, the pliers head 109 needs to be bent, and the knob 207 is turned so that the knob 207 drives the connecting rod 206, and the connecting rod 206 drives the worm 208 to rotate. The worm 208 drives the worm wheel 205 while rotating, so that the worm wheel 205 drives the first connecting shaft 204, and the first connecting shaft 204 drives the connecting column 201 to rotate. The connecting column 201 drives the hollow block 104 and the hollow column 106 while rotating, so that the pliers head 109 is bent at a suitable angle to extend into the patient's intervertebral space to clamp the nucleus pulposus tissue, which is convenient for the operator to operate and avoid incomplete decompression of the intervertebral space, which leads to recurrence of intervertebral disc herniation in the patient after surgery.

[0044] like Figure 2 As shown, the inner top wall of the connecting column 201 is fixedly connected with a first connecting shaft 204, the outer surface of the first connecting shaft 204 is fixedly connected with a worm gear 205, the middle part of the caliper body 103 is rotatably connected with a connecting rod 206, both left and right ends of the connecting rod 206 pass through the caliper body 103, the left end of the connecting rod 206 is fixedly connected with a knob 207, the right end of the connecting rod 206 is fixedly connected with a worm 208, the worm 208 is meshed with the worm gear 205, and a limit assembly 300 for limiting the worm 208 is provided on the caliper body 103.

[0045] When the angle of the pliers head 109 needs to be adjusted according to actual operation needs, the pliers head 109 needs to be bent and the knob 207 is turned so that the knob 207 drives the connecting rod 206, and the connecting rod 206 drives the worm 208 to rotate. The worm 208 drives the worm wheel 205 while rotating, so that the worm wheel 205 drives the first connecting shaft 204, and the first connecting shaft 204 drives the connecting column 201 to rotate. The connecting column 201 drives the hollow block 104 and the hollow column 106 while rotating, so that the pliers head 109 is bent at a suitable angle to extend into the patient's intervertebral space to clamp the nucleus pulposus tissue, which is convenient for the operator to operate and avoid incomplete decompression of the intervertebral space, which leads to recurrence of intervertebral disc herniation in the patient after surgery.

[0046] like Figure 4As shown, the limit assembly 300 includes a rectangular block 301, a rectangular groove 302 is provided on the pliers body 103, the rectangular block 301 is slidably connected to the inner wall of the rectangular groove 302, the upper end of the rectangular block 301 is fixedly connected to a second connecting shaft 303, the second connecting shaft 303 is slidably inserted into the pliers body 103, the upper end of the second connecting shaft 303 is fixedly connected to a pull block 304, a second spring 305 is fixedly connected between the inner wall of the rectangular groove 302 and the rectangular block 301, the second spring 305 is sleeved on the outside of the second connecting shaft 303, the lower end of the rectangular block 301 is fixedly connected to a first latch 306, and the connecting rod 206 is provided with a socket 307 that cooperates with the first latch 306.

[0047] When the angle of the connecting column 201 needs to be adjusted, the pull block 304 is pulled upward so that the pull block 304 drives the second connecting shaft 303, and the second connecting shaft 303 drives the rectangular block 301, so that the second spring 305 is compressed, and the rectangular block 301 drives the first pin 306 to leave the socket 307 on the connecting rod 206. Then, the user turns the knob 207 so that the knob 207 drives the connecting rod 206 to adjust the angle of the connecting column 201. After the adjustment is completed, the pull block 304 is released, and the second spring 305 rebounds, so that the rectangular block 301 drives the first pin 306 to be inserted into the socket 307 to re-restrict the connecting rod 206.

[0048] like Figure 5 As shown, the inner wall of the hollow column 106 is fixedly connected with a gear ring 209, the inner wall of the hollow column 106 is fixedly connected with a limit plate 210, the middle part of the limit plate 210 is rotatably connected with a hollow rod 211, the right end of the hollow rod 211 is fixedly connected with a second gear 212, and the second gear 212 is meshed with the gear ring 209.

[0049] When the forceps head 109 needs to be rotated, the connecting rod 213 is horizontally inserted into the middle of the hollow rod 211, and the connecting rod 213 is connected to the stop block 217. Then, the cross block 231 is twisted so that the cross block 231 drives the connecting rod 213, and the connecting rod 213 drives the hollow rod 211 to rotate, so that the hollow rod 211 drives the second gear 212, and the second gear 212 drives the gear ring 209, so that the gear ring 209 drives the hollow column 106 to rotate, and the hollow column 106 rotates while driving the forceps head 109, so as to facilitate the removal of nucleus pulposus tissue at different angles.

[0050] like Figure 7 and Figure 8As shown, the middle part of the pliers body 103 is slidably connected with a connecting rod 213, one end of the connecting rod 213 is slidably inserted in the hollow rod 211, and the connecting rod 213 is symmetrically provided with placement grooves 214 at the upper and lower parts, and the inner walls of the two placement grooves 214 are slidably connected with triangular blocks 215, and a first spring 216 is fixedly connected between the inner walls of the placement grooves 214 and the triangular blocks 215, and the inner wall of the hollow rod 211 is symmetrically fixedly connected with a stopper 217 at the upper and lower parts, and the vertical surface of the triangular block 215 contacts the vertical surface of the stopper 217, and the left end of the connecting rod 213 is fixedly connected with a cross block 231.

[0051] When it is necessary to connect the connecting rod 213 with the stop block 217, the cross block 231 is pushed to the right side so that the cross block 231 drives the connecting rod 213 so that the connecting rod 213 is horizontally inserted into the middle part of the hollow rod 211. Since the triangular block 215 is compressed into the placement groove 214, the first spring 216 is in a compressed state. When the connecting rod 213 is inserted into the hollow rod 211 and passes through the stop block 217, when the triangular block 215 of the connecting rod 213 passes through the stop block 217, the first spring 216 rebounds so that the triangular block 215 pops out and fits against the side wall of the stop block 217, thereby connecting the connecting rod 213.

[0052] like Figure 8 and Fig. 9 As shown, the ends of the two triangular blocks 215 that are close to each other are fixedly connected to the same fixing rope 218, and the outer surface of the fixing rope 218 is fixedly connected to a pull rope 219. The left end of the pull rope 219 passes through the connecting column 201, the clamp body 103 and the fixed handle 101. The left end of the pull rope 219 is fixedly connected to a ring 220. The fixed handle 101 is provided with a fixing component 400 for fixing the connecting rod 213.

[0053] When the connection rod 213 needs to be released, the ring 220 is pulled to drive the pull rope 219, and the pull rope 219 drives the fixing rope 218. Under the pulling force of the fixing rope 218, the triangular block 215 can slide into the placement groove 214, thereby releasing the connection with the connection rod 213 and facilitating the subsequent connection of the connection rod 213.

[0054] like Fig. 9As shown, the fixing assembly 400 includes a fixing plate 401, which is fixedly connected to the left end of the fixing handle 101, and the left end of the fixing plate 401 is rotatably connected to a disc 402, and the left end of the fixing handle 101 is slidably connected to a mounting block 403, a sliding groove 404 is provided in the middle of the mounting block 403, and a sliding block 405 is slidably connected to the inner wall of the sliding groove 404, and a handle 406 is fixedly connected to the rear end of the sliding block 405, and the handle 406 is slidably inserted on the mounting block 403, and a third spring 407 is fixedly connected between the inner wall of the sliding groove 404 and the sliding block 405, and the upper end of the sliding block 405 is fixedly connected to a connecting plate 408, and the connecting plate 408 is slidably inserted on the mounting block 403, and the right end of the connecting plate 408 is fixedly connected to an insertion rod 409, and a plurality of second slots 410 cooperating with the insertion rod 409 are provided on the disc 402.

[0055] When the pliers head 109 needs to be rotated, the handle 406 is pulled, so that the handle 406 drives the sliding block 405, the third spring 407 is compressed, and the sliding block 405 also drives the connecting plate 408, so that the connecting plate 408 drives the insertion rod 409 to leave the second slot 410 on the disk 402, and then, the cross block 231 is twisted, so that the cross block 231 drives the connecting rod 213 to rotate the pliers head 109. After the rotation is completed, the handle 406 is released, and the third spring 407 rebounds, so that the sliding block 405 drives the connecting plate 408, and the connecting plate 408 drives the insertion rod 409 to be inserted into the second slot 410 on the disk 402 to fix the connecting rod 213 and prevent the connecting rod 213 from rotating.

[0056] like Figure 6 As shown, a fixing block 221 is fixedly connected to the inner wall of the hollow column 106 , a first rubber block 222 is fixedly connected to the left end of the fixing block 221 , a second rubber block 223 is fixedly connected to the right end of the second gear 212 , and the second rubber block 223 is in close contact with the first rubber block 222 .

[0057] The first rubber block 222 and the second rubber block 223 are closely attached to each other, so that the friction between the second gear 212 and the fixing block 221 can be increased, thereby limiting the second gear 212 and preventing the second gear 212 from rotating at will.

[0058] like Fig.10 As shown, the elastic component includes a first spring piece 224 and a second spring piece 225. The first spring piece 224 is fixedly connected to a side of the fixed handle 101 close to the movable handle 102, and the second spring piece 225 is fixedly connected to a side of the movable handle 102 close to the fixed handle 101. A U-shaped opening 226 is provided at the top end of the first spring piece 224, and the top end of the second spring piece 225 is engaged in the U-shaped opening 226.

[0059] By providing the first elastic piece 224 and the U-shaped opening 226 , the application range of the device can be expanded, so that it can be adapted to nucleus pulposus tissues of different shapes and sizes, thereby improving the flexibility of surgical operations.

[0060] like Fig.10 As shown, the middle part of the fixed handle 101 is rotatably connected to the first wire wheel 227 and the second wire wheel 228, and the connecting rope 115 passes around the first wire wheel 227 and the second wire wheel 228 in sequence. The right end of the movable handle 102 is fixedly connected to a protective shell 229, and a wire groove 230 is opened in the movable handle 102. The connecting rope 115 passes through the protective shell 229 and the wire groove 230 in sequence, and one end of the connecting rope 115 is fixedly connected to the bottom end of the movable handle 102.

[0061] The connecting rope 115 can be guided by the first wire wheel 227 and the second wire wheel 228, and the connecting rope 115 can be protected by the protective shell 229 to prevent the connecting rope 115 from being exposed to the outside. The wire groove 230 can improve the stability of the connecting rope 115 to ensure that the connecting rope 115 remains compact and fixed. The connecting rope 115 can be pulled by pulling the movable handle 102.

[0062] The working process provided by the present invention is as follows:

[0063] When the present invention is in use, the surgeon can control the opening and closing of the jaws of the movable handle 102. When the movable handle 102 approaches the fixed handle 101, the first spring sheet 224 and the second spring sheet 225 are compressed and the elastic potential energy increases, so that the fixed handle 101 drives the connecting rope 115 to contract, and the connecting rope 115 drives the second cylinder 114, so that the second cylinder 114 drives the first cylinder 112 through the first T-shaped slider 113, and the first cylinder 112 drives the rack plate 111 to move to the left end. When the rack plate 111 moves, it drives the two first gears 108, so that the two first gears 108 simultaneously drive the two pliers heads 109 to move to the left end to clamp the nucleus pulposus tissue. When it is necessary to adjust the pliers heads 109 according to actual operation needs When the pliers head 109 is bent, the pull block 304 is first pulled upward, so that the pull block 304 drives the second connecting shaft 303, and the second connecting shaft 303 drives the rectangular block 301, so that the second spring 305 is compressed, and the rectangular block 301 drives the first latch 306 to leave the socket 307 on the connecting rod 206, and then, the knob 207 is turned, so that the knob 207 drives the connecting rod 206, so that the connecting rod 206 drives the worm 208 to rotate, and the worm 208 rotates while driving the worm wheel 205, so that the worm wheel 205 drives the first connecting shaft 204, and the first connecting shaft 204 drives the connecting column 201 to rotate, and the connecting column 201 rotates while driving the hollow block 104 and the hollow column 106, so that the pliers head 10 9 is bent at a suitable angle and inserted into the intervertebral space of the patient to clamp the nucleus pulposus tissue. When it is necessary to restrict the connecting rod 206, the pull block 304 is released, and the second spring 305 rebounds, so that the rectangular block 301 drives the first pin 306 to be inserted into the socket 307 to restrict the connecting rod 206. When the clamp head 109 needs to be rotated to adapt to different actual needs, the handle 406 is pulled, so that the handle 406 drives the sliding block 405, and the third spring 407 is compressed. The sliding block 405 also drives the connecting plate 408, so that the connecting plate 408 drives the insertion rod 409 to leave the second slot 410 on the disc 402, and then the cross block 231 is pushed to the right, so that the cross block 231 drives the connecting rod 213, so that the connecting rod 213 is horizontally inserted into the hollow rod 211. In the middle part, since the triangular block 215 is compressed into the placement groove 214, the first spring 216 is in a compressed state. When the connecting rod 213 is inserted into the hollow rod 211 and passes through the stopper 217, when the triangular block 215 of the connecting rod 213 passes through the stopper 217, the first spring 216 rebounds to make the triangular block 215 pop out and fit with the side wall of the stopper 217, thereby connecting the connecting rod 213. Subsequently, the connecting rod 213 and the hollow rod 211 can be driven to rotate by rotating the cross block 231. The hollow rod 211 can drive the gear ring 209 to rotate through the second gear 212. The gear ring 209 drives the hollow column 106 to rotate on the circular plate 105, and the pliers head 109 is rotated to a suitable angle. After rotating to a suitable angle, the nucleus pulposus biting forceps can be used conveniently.The second rubber block 223 on the second gear 212 and the first rubber block 222 are closely attached to each other, so that the friction between the second gear 212 and the fixed block 221 can be increased, so that the second gear 212 can be restricted to prevent the second gear 212 from rotating at will. When it is necessary to restrict the connecting rod 213, the handle 406 is released, and the third spring 407 rebounds, so that the sliding block 405 drives the connecting plate 408, and the connecting plate 408 drives the insertion rod 409 to be inserted into the second slot 410 on the disc 402 to fix the connecting rod 213 and prevent the connecting rod 213 from rotating. When it is necessary to release the connection of the connecting rod 213, the ring 220 is pulled to drive the pull rope 219, and the pull rope 219 drives the fixing rope 218. Under the tension of the fixing rope 218, the triangular block 215 can slide into the placement groove 214, and the connection with the connecting rod 213 is released, which is convenient for the subsequent connection of the connecting rod 213.

[0064] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0065] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An adjustable angle nucleus pulposus forceps, comprising a fixed handle, characterized in that: The fixed handle is connected to a movable handle, an elastic component is provided between the fixed handle and the movable handle, one end of the fixed handle is fixedly connected to a pliers body, the right end of the pliers body is rotatably connected to a hollow block, the right end of the hollow block is fixedly connected to a circular plate, the right end of the circular plate is rotatably connected to a hollow column, and the inner wall of the hollow column is symmetrically rotatably connected to a fixed rod; The upper ends of the two fixed rods are fixedly connected to the first gear, the upper end of the first gear is fixedly connected to the clamp head, the inner bottom wall of the hollow column is fixedly connected to a support plate, the upper end of the support plate is slidably connected to a rack plate, the rack plate and the two first gears are meshed with each other, the left end of the rack plate is fixedly connected to the first cylinder, the left end of the first cylinder is fixedly connected to the first T-shaped slider, the left end of the first cylinder is rotatably connected to the second cylinder through the first T-shaped slider, the left end of the second cylinder is fixedly connected to a connecting rope, the other end of the connecting rope is fixedly connected to the bottom end of the movable handle, and the connecting rope is inserted in the hollow block and the clamp body; The right end of the clamp body is rotatably connected to a connecting column, two arc-shaped blocks are fixedly connected in the connecting column, the left end of the hollow block is fixedly connected to the connecting column, and the left end of the clamp body is symmetrically fixedly connected to a second T-shaped slider, and the connecting column is provided with a T-shaped sliding groove that cooperates with the connecting column, and the connecting rope slides through the two arc-shaped blocks; The inner top wall of the connecting column is fixedly connected with a first connecting shaft, the outer surface of the first connecting shaft is fixedly connected with a worm gear, the middle part of the caliper body is rotatably connected with a connecting rod, both left and right ends of the connecting rod penetrate the caliper body, the left end of the connecting rod is fixedly connected with a knob, the right end of the connecting rod is fixedly connected with a worm, and the worm is meshed with the worm gear; The inner wall of the hollow column is fixedly connected with a gear ring, the inner wall of the hollow column is fixedly connected with a limit plate, the middle part of the limit plate is rotatably connected with a hollow rod, the right end of the hollow rod is fixedly connected with a second gear, and the second gear is meshed with the gear ring; The middle part of the clamp body is slidably connected with a connecting rod, one end of the connecting rod is slidably inserted in the hollow rod, the connecting rod is symmetrically provided with placement grooves, the inner walls of the two placement grooves are slidably connected with triangular blocks, a first spring is fixedly connected between the inner walls of the placement grooves and the triangular blocks, the inner wall of the hollow rod is symmetrically fixedly connected with a stopper, the vertical surface of the triangular block contacts the vertical surface of the stopper, and the left end of the connecting rod is fixedly connected with a cross block; The ends of the two triangular blocks that are close to each other are fixedly connected to the same fixing rope, and the outer surface of the fixing rope is fixedly connected to a pull rope. The left end of the pull rope passes through the connecting column, the clamp body and the fixed handle. The left end of the pull rope is fixedly connected to a ring, and the fixed handle is provided with a fixing component for fixing the connecting rod.

2. The adjustable angle nucleus pulposus forceps according to claim 1, characterized in that: The caliper body is provided with a limit assembly for limiting the worm, the limit assembly includes a rectangular block, a rectangular groove is provided on the caliper body, the rectangular block is slidably connected to the inner wall of the rectangular groove, the upper end of the rectangular block is fixedly connected to a second connecting shaft, the second connecting shaft is slidably inserted into the caliper body, the upper end of the second connecting shaft is fixedly connected to a pulling block, a second spring is fixedly connected between the inner wall of the rectangular groove and the rectangular block, the second spring is sleeved on the outside of the second connecting shaft, the lower end of the rectangular block is fixedly connected to a first pin, and the connecting rod is provided with a socket that cooperates with the first pin.

3. The adjustable angle nucleus pulposus forceps according to claim 2, characterized in that: The fixing assembly includes a fixing plate, which is fixedly connected to the left end of the fixing handle, the left end of the fixing plate is rotatably connected to a disc, the left end of the fixing handle is slidably connected to a mounting block, a sliding groove is provided in the middle of the mounting block, the inner wall of the sliding groove is slidably connected to a sliding block, the rear end of the sliding block is fixedly connected to a handle, the handle is slidably inserted into the mounting block, a third spring is fixedly connected between the inner wall of the sliding groove and the sliding block, the upper end of the sliding block is fixedly connected to a connecting plate, the connecting plate is slidably inserted into the mounting block, the right end of the connecting plate is fixedly connected to an insertion rod, and a plurality of second slots cooperating with the insertion rods are provided on the disc.

4. The adjustable angle nucleus pulposus forceps according to claim 3, characterized in that: A fixing block is fixedly connected to the inner wall of the hollow column, a first rubber block is fixedly connected to the left end of the fixing block, and a second rubber block is fixedly connected to the right end of the second gear, and the second rubber block is in close contact with the first rubber block.

5. The adjustable angle nucleus pulposus forceps according to claim 4, characterized in that: The elastic component includes a first spring sheet and a second spring sheet. The first spring sheet is fixedly connected to a side of the fixed handle close to the movable handle, and the second spring sheet is fixedly connected to a side of the movable handle close to the fixed handle. A U-shaped opening is provided at the top of the first spring sheet, and the top of the second spring sheet is engaged in the U-shaped opening.

6. The adjustable angle nucleus pulposus forceps according to claim 1, characterized in that: The middle part of the fixed handle is rotatably connected to the first wire wheel and the second wire wheel, and the connecting rope passes around the first wire wheel and the second wire wheel in sequence. The right end of the movable handle is fixedly connected to a protective shell, and a wire groove is opened in the movable handle. The connecting rope passes through the protective shell and the wire groove in sequence.

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