Longitudinal vertebral body clamping device

Abstract

The utility model discloses a longitudinal vertebral body clamp device which comprises a clamp body, the clamp body comprises a first clamp handle and a second clamp handle which are oppositely arranged and movably connected, the clamping end of the first clamp handle and the clamping end of the second clamp handle are each provided with a thin handle claw, and a plurality of corresponding inserting holes are formed in the first clamp handle and the second clamp handle at intervals. A connecting piece is detachably arranged between the inserting holes of the first plier handle and the second plier handle, so that positioning matching between the inserting holes in different positions of the first plier handle and the second plier handle is achieved. The clamp is used for longitudinally clamping and turning over the centrum and can adapt to centrum heights of different sizes, the clamping faces of the two thin handle claws are kept parallel as much as possible, the clamping area is increased, the clamping force is evenly distributed, the centrum can be firmly and stably clamped, and the centrum can be well turned over and taken out; in addition, the maximum transverse surgery operation space is reserved while the centrum is longitudinally clamped, and the surgery safety and the surgery efficiency of centrum monolith resection or sagittal resection are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a longitudinal vertebral clamp device. Background Art

[0002] Maintaining adequate surgical margins of normal tissue during spinal tumor resection is crucial. Therefore, posterior en bloc vertebral resection or sagittal vertebral resection has become a crucial method for the clinical radical treatment of spinal tumors. Protecting the spinal cord and nerves is crucial during this procedure. The most common procedure for damaging the spinal cord and nerves is clamping the intact vertebral body after it is severed from surrounding tissue and then flipping it out to remove it. Due to extremely limited space, unstable clamping of the vertebral body, the inability to flip it out, and the need to change the clamping position and instruments can cause irreversible compression and impact damage to the spinal cord, which is the most severe and therefore the most dangerous. If the vertebral body is clamped transversely (i.e., clamping the vertebral body on both sides along the circumference), the clamping tools occupy the already very limited transverse space, risk further damage to the spinal cord nerves, and make flipping the vertebral body difficult to remove. Currently, there are no dedicated longitudinal vertebral clamping tools for this type of surgery. Each surgeon performs this procedure based on their own experience using a patchwork of existing instruments and materials, resulting in a high risk of intraoperative spinal cord damage. Utility Model Content

[0003] In order to solve the deficiencies in the prior art, the utility model provides a longitudinal vertebral clamp device for longitudinally clamping and flipping the vertebral body. The connecting piece is detachably arranged at different insertion hole positions on the first clamp handle and the second clamp handle, so as to adjust the opening distance between the first clamp handle and the second clamp handle to adapt to vertebral heights of different sizes, so that the clamping surfaces of the two thin handle claws are kept as parallel as possible, the clamping area of ​​the vertebral body is increased, and the clamping force of the thin handle claws on the vertebral body is distributed as evenly as possible; the utility model can firmly and stably clamp the vertebral body and flip and remove the vertebral body well, and leave the maximum horizontal surgical operation space while clamping the vertebral body longitudinally; the two thin handle claws can also be disassembled and inserted longitudinally into the intervertebral space, which can be used in operations where the space is extremely narrow. The angle is also relatively tricky, which increases the scope of application; it avoids squeezing of surrounding tissues, greatly improving the safety and efficiency of such operations, improving the coordination efficiency between the surgeon and the assistant, and improving the safety and efficiency of vertebral body resection or sagittal resection; the locking mechanism can fix the distance between the first clamp handle and the second clamp handle, and no manpower is required to maintain the clamping action. During the operation, it is only necessary to hold the clamp body steady, which can save manpower for continuous and stable clamping. Moreover, the clamping force between the first clamp handle and the second clamp handle can be flexibly adjusted as needed, and the clamping force between the two thin handle claws can be kept consistent and uniform, effectively preventing the risk of vertebral body crushing due to excessive clamping force or displacement and slippage due to insufficient clamping force, ensuring safety and reliability during the operation.

[0004] In order to achieve the above-mentioned purpose, the present invention is realized through the following technical solutions:

[0005] The utility model provides a longitudinal vertebral clamping device, including a clamp body, the clamp body including a first clamp handle and a second clamp handle arranged opposite to each other, the first clamp handle and the second clamp handle being movably connected so that the clamping ends of the first clamp handle and the second clamp handle have different spacings, the clamping ends of the first clamp handle and the second clamp handle are both provided with thin handle claws, a plurality of corresponding sockets are both provided on the first clamp handle and the second clamp handle at intervals, and a detachable connecting piece is provided between the sockets of the first clamp handle and the second clamp handle to achieve positioning and matching between the sockets at different positions of the first clamp handle and the second clamp handle.

[0006] A first anti-slip structure is provided on the clamping surface of the thin handle claw;

[0007] or / and the thin handle claw is in a rectangular oval shape;

[0008] Or / and the thickness of the thin handle claw is 3±1 mm, the length is 30±5 mm, and the width is 20±5 mm.

[0009] The first anti-slip structure provided on the clamping surface of the thin handle claw is a plurality of nail bodies.

[0010] There are three nail bodies arranged on the clamping surface of the thin handle claw, and the three nail bodies 31 form three vertices of an equilateral triangle, wherein one nail body is located at one end close to the clamp body, and two nail bodies are located at one end away from the clamp body.

[0011] The first pliers handle and the second pliers handle both include a clamping portion, a connecting portion and a handle portion connected in sequence, and the angle between the clamping portion and the connecting portion, and the angle between the connecting portion and the handle portion are both obtuse angles. The thin handle claw is arranged at the end of the clamping portion away from the connecting portion, and the socket is arranged at the connecting portion between the first pliers handle and the second pliers handle.

[0012] A locking mechanism is also provided between the first clamp handle and the second clamp handle to fix the clamping distance between the first clamp handle and the second clamp handle, and the locking mechanism includes a locking link, and a sliding groove provided along the length direction of the handle parts of the first clamp handle and the second clamp handle. The two ends of the locking link are respectively provided with a first sliding member and a second sliding member adapted to the sliding grooves of the first clamp handle and the second clamp handle, and the first sliding member and / or the second sliding member are movably connected to the locking link, and a locking nut is also provided on the locking link to fix the first sliding member and / or the second sliding member movably connected to the locking link on the locking link.

[0013] The sliding member includes a column and blocking blocks arranged at both ends of the column. The column is slidably arranged in the slide groove. The blocking blocks are located on both sides of the slide groove, and the width of the blocking blocks is greater than the opening width of the slide groove; the blocking blocks at one end of the first sliding member or / and the second sliding member movably connected to the locking link are provided with a hole groove for the locking link to pass through.

[0014] An anti-slip stopper is provided at the end of the slide groove, and the anti-slip stopper is threadedly connected to the slide groove.

[0015] The length of the nail body arranged on the clamping surface of the thin handle claw is 4±1 mm.

[0016] The angle between the clamping portion and the connecting portion is 120°;

[0017] Or / and the clamping portion and the handle portion are both straight rod-shaped and arranged in parallel;

[0018] Or / and the clamping portion is an arc-shaped structure convex outward;

[0019] or / and the length of the clamping portion of the first clamp handle and the second clamp handle is 4-6 cm;

[0020] or / and the length of the connecting portion between the first pliers handle and the second pliers handle is 6±1 cm;

[0021] or / and the length of the handle portion of the first pliers handle and the second pliers handle is 7±2 cm;

[0022] Or / and the handle portions of the first pliers handle and the second pliers handle are provided with a second anti-slip structure.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The utility model provides adjustable sockets on the first and second handles, and the connecting pieces are arranged at different socket positions to adjust the opening distance between the first and second handles to adapt to the heights of vertebrae of different sizes, so that the clamping surfaces of the two thin handle claws are kept as parallel as possible, thereby increasing the clamping area of ​​the vertebrae and distributing the clamping force of the thin handle claws on the vertebrae as evenly as possible. The utility model can be used for longitudinal clamping and flipping of vertebrae of different sizes, can firmly and stably clamp vertebrae of different sizes and can flip and remove the vertebrae well, and can leave the maximum space while clamping the vertebrae longitudinally. Horizontal surgical operation space; the setting of the detachable connecting part can also make the two thin handle claws on the first clamp handle and the second clamp handle able to be used simultaneously or separately, and can be applied to positions where the space is extremely narrow and the angles are relatively tricky during surgery, thereby improving the scope of application; the utility model adopts the two thin handle claws on the first clamp handle and the second clamp handle to be inserted into the intervertebral space at the same time or separately, which can avoid squeezing the surrounding tissues, greatly improving the safety and efficiency of such operations, improving the coordination efficiency between the surgeon and the assistant, and improving the safety and efficiency of en bloc vertebral resection or sagittal resection.

[0025] 2. The first anti-slip structure is provided on the clamping surface of the thin handle claw of the utility model, which can prevent the vertebral body from falling off, slipping and rotating, thereby improving the clamping force of the vertebral body and improving the safety and efficiency of the operation.

[0026] 3. The first anti-slip structure of the thin handle claws on the first and second clamp handles of the utility model is a three-nail design in an equilateral triangle structure, which can firmly clamp the vertebral body to prevent the vertebral body from shifting or slipping during the clamping process.

[0027] 4. The first and second clamp handles of the present invention both include a clamping portion, a connecting portion, and a handle portion that are sequentially connected. The angles between the clamping portion and the connecting portion, and the angles between the connecting portion and the handle portion are both obtuse angles, which can avoid obstruction and maximize the surgical operation space.

[0028] 5. The locking mechanism of the utility model can fix the first clamp handle and the second clamp handle, and no manpower is needed to maintain the clamping action. During the operation, it is only necessary to hold the clamp body steady, which can save manpower for continuous and stable clamping. Moreover, the clamping force between the first clamp handle and the second clamp handle can be flexibly adjusted as needed, and the clamping force between the two thin handle claws can be kept consistent and uniform, effectively preventing the risk of vertebral crushing due to excessive clamping force or displacement and slippage due to insufficient clamping force, thereby ensuring safety and reliability during the operation.

[0029] 6. The anti-slip blocking arrangement of the present invention further ensures that the first sliding member and the second sliding member will not accidentally slip out of the slide groove after being adjusted into place, thereby improving the clamping stability and reliability of the present invention.

[0030] 7. The specific size design of the clamp body and the thin handle claws of the utility model can better adapt to the longitudinal clamping of the vertebral body, and can also avoid obstruction as much as possible, thereby maximizing the surgical operation space. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Attachment Figure 1 It is a structural diagram of the present utility model.

[0032] Attachment Figure 2 This is a schematic structural diagram of the clamping portion of the present invention being in the shape of a straight rod.

[0033] Attachment Figure 3 It is a structural schematic diagram of the utility model in which the clamping portion is an arc-shaped structure protruding outward.

[0034] Attachment Figure 4 It is a structural diagram of the locking mechanism of the utility model.

[0035] The numbers shown in the accompanying drawings are: 1. first clamp handle; 11. clamping part; 12. connecting part; 13. handle part; 14. slide groove; 2. second clamp handle; 3. thin handle claw; 31. nail body; 4. socket; 5. connecting part; 51. fastening nut; 6. locking rod; 61. first sliding part; 611. column; 612. blocking block; 613. hole groove; 62. second sliding part; 63. locking nut; 7. anti-slip blocking. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the specific embodiments of the present invention. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the present invention belongs. The words "first", "second" and similar terms used in the utility model specification and claims of the present utility model patent do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0038] The two handles of existing clamps are generally hinged. When clamping the vertebral body, there is an angle between the clamping surfaces of the two clamp handles, that is, the clamping distance is the smallest at the end of the clamping surface away from the hinge position, and the closer to the hinge position, the greater the distance between the two clamping surfaces. Therefore, the clamping force on the vertebral body is generally concentrated on the end of the clamping surface away from the hinge position, and the clamping area is also relatively small, which can easily cause the vertebral body to fall off, slip and rotate. In actual surgery, the operating space is extremely narrow and the angles are often tricky. It is impossible to insert the two clamp handles at the same time, and sometimes they need to be handled one at a time. Moreover, the clamps cannot be replaced or added during the operation, and a stable position must be maintained, because the vertebral body is tightly pressed against the spinal cord and nerves, which will be damaged if not handled properly.

[0039] In order to solve the above problems, Figure 1 As shown, the utility model provides a longitudinal vertebral clamp device, including a clamp body, the clamp body including a first clamp handle 1 and a second clamp handle 2 arranged opposite to each other, the first clamp handle 1 and the second clamp handle 2 being movably connected so that the clamping ends of the first clamp handle 1 and the second clamp handle 2 have different spacings, the clamping ends of the first clamp handle 1 and the second clamp handle 2 are both provided with thin handle claws 3, the first clamp handle 1 and the second clamp handle 2 are both provided with a plurality of corresponding sockets 4 at intervals, and illustratively, the number of the sockets 4 can be set to 9, and a detachable connector 5 is provided between the sockets 4 of the first clamp handle 1 and the second clamp handle 2 to achieve positioning and matching between the sockets 4 at different positions of the first clamp handle 1 and the second clamp handle 2. The connector 5 can be a pin, and by adjusting the pin at different positions of the sockets 4 of the first clamp handle 1 and the second clamp handle 2, the distance between the clamping parts 11 can be adjusted to adapt to different vertebral heights. Preferably, a detachable fastening nut 51 is provided at the insertion end of the bolt, and the fastening nut 51 is tightened after the bolt passes through the insertion holes 4 of the first clamp handle 1 and the second clamp handle 2 to prevent the bolt from falling.

[0040] When the present invention is in use, the thin handle claws 3 of the first pliers handle 1 and the second pliers handle 2 are longitudinally inserted into the intervertebral space (longitudinal insertion, that is, along the longitudinal extension direction of the spine, the thin handle claws of the first pliers handle and the second pliers handle are respectively located on the upper and lower sides of the vertebral body), and the two thin handle claws 3 are used to clamp the vertebral body. The present invention adopts an insertion-type longitudinal entry into the intervertebral space, which can avoid squeezing the surrounding tissues; because the first pliers handle 1 and the second pliers handle 2 are detachably connected by the connecting piece 5, the thin handle claws 3 of the first pliers handle 1 and the second pliers handle 2 can be inserted into the intervertebral space successively or simultaneously, which can be used in extremely narrow spaces and tricky angles during surgery, thereby improving the scope of application and flexibility of use; the connecting piece 5 is detachably arranged in the corresponding jacks 4 at different positions on the first pliers handle 1 and the second pliers handle 2, and the first pliers handle 1 and the second pliers handle can be adjusted. The clamping spacing between the two thin handle claws 3 on the handle 2 is adapted to the height of vertebrae of different sizes, so that the two thin handle claws 3 can be kept in a parallel state as much as possible, and the contact area with the vertebrae is increased, so that the clamping force of the thin handle claws 3 on the vertebrae is distributed as evenly as possible, thereby improving the clamping stability of the vertebrae and ensuring the safety and reliability during the operation; the utility model is inserted into the intervertebral space longitudinally to avoid squeezing the surrounding tissues, and can be used for longitudinal clamping and flipping of vertebrae of different sizes. It can firmly and stably clamp vertebrae of different sizes and flip and remove the vertebrae well, and while clamping the vertebrae longitudinally, it leaves the largest horizontal surgical operation space, which greatly improves the safety and efficiency of such operations, improves the cooperation efficiency between the surgeon and the assistant, and improves the surgical safety and efficiency of en bloc vertebral resection or sagittal resection.

[0041] In a possible embodiment, a first anti-slip structure is provided on the clamping surface of the thin handle claw 3 to increase the friction with the vertebral body, prevent the vertebral body from falling off, slipping and rotating, and further improve the clamping stability of the vertebral body.

[0042] In a possible embodiment, the first anti-slip structure provided on the clamping surface of the thin handle claw 3 is a plurality of nail bodies 31, which increases the holding force between the two thin handle claws 3 and the friction force on the vertebral body, plays a stable anti-slip role in the clamping and flipping of the vertebral body, and prevents the vertebral body from falling off, slipping and rotating in the middle.

[0043] In one possible embodiment, three nail bodies 31 are provided on the clamping surface of the thin shank jaw 3. The three nail bodies 31 form the three vertices of an equilateral triangle, with one nail body 31 located at the end closest to the clamp body and two nail bodies 31 located at the end away from the clamp body. The arrangement of three nail bodies 31 can firmly clamp the vertebral body and prevent displacement or slippage of the vertebral body during clamping.

[0044] In one possible embodiment, the first handle 1 and the second handle 2 each include a clamping portion 11, a connecting portion 12, and a handle portion 13, which are connected in sequence. The angles between the clamping portion 11 and the connecting portion 12, and the angles between the connecting portion 12 and the handle portion 13 are both obtuse. The thin handle claw 3 is provided at the end of the clamping portion 11 facing away from the connecting portion 12, and the insertion hole 4 is provided at the connecting portion 12 between the first handle 1 and the second handle 2. This can avoid obstruction and maximize the surgical operating space.

[0045] Furthermore, a locking mechanism is provided between the first clamp handle 1 and the second clamp handle 2 to fix the clamping distance between the first clamp handle 1 and the second clamp handle 2. The locking mechanism includes a locking link 6, and a slide groove 14 provided along the length direction of the handle portion 13 of the first clamp handle 1 and the second clamp handle 2. The length of the locking link 6 can be set to about 10 cm ± 2 cm, and the length of the slide groove 14 of the handle portion 13 of the first clamp handle 1 and the second clamp handle 2 can be set to about 4 cm ± 1 cm. The two ends of the locking link 6 are respectively provided with a first sliding member 61 and a second sliding member 62 adapted to the slide groove 14 of the first clamp handle 1 and the second clamp handle 2. The first sliding member 61 and / or the second sliding member 62 are movably connected to the locking link 6. A locking nut 63 is also provided on the locking link 6, and the locking nut 63 is threadedly connected to the locking link 6 so that the first sliding member 61 and / or the second sliding member 62 movably connected to the locking link 6 are fixed on the locking link 6.

[0046] The setting of the locking mechanism can fix the first clamp handle 1 and the second clamp handle 2, and no manpower is needed to maintain the clamping action. During the operation, it is only necessary to hold the clamp body steady, which can save manpower for continuous and stable clamping; and the clamping force between the first clamp handle 1 and the second clamp handle 2 can be flexibly adjusted and maintained stably and durably as needed, and the clamping force between the two thin handle claws 3 can be kept consistent and uniform, effectively preventing the risk of vertebral crushing caused by excessive clamping force or displacement and slippage caused by insufficient clamping force, further ensuring the safety and reliability of the operation.

[0047] like Figure 2 、 Figure 3 As shown, one end of the locking link 6 is fixedly connected to the first sliding member 61, and the other end is slidably connected to the second sliding member 62 and can pass through the second sliding member 62. Two locking nuts 63 are threadedly arranged on both sides of the second sliding member 62 so that the second sliding member 62 can be fixed on the locking link 6.

[0048] The locking nut 63 can limit the length of the locking link 6 between the first clamp handle 1 and the second clamp handle 2 to prevent the locking link 6 from moving. After locking, the clamping action can be maintained, ensuring the durability and stability of the clamping action. During the operation, it is only necessary to hold the handle portion 13 firmly. Moreover, the clamping force will be uniform, and the vertebral body will not be excessively crushed or insufficiently clamped to cause displacement and slippage, thereby ensuring the safety and reliability of the operation. The first sliding member 61 and the second sliding member 62 are detachably arranged on the first clamp handle 1 and the second clamp handle 2, and the locking nut 63 is detachable and can be installed on the locking link 6 at any time, so that the first clamp handle 1 and the second clamp handle 2 of the clamp body can be used simultaneously or separately, thereby improving the flexibility of the utility model.

[0049] In one possible embodiment, Figure 4 As shown, the first sliding member 61 and the second sliding member 62 both include a column 611 and blocking blocks 612 arranged at both ends of the column 611. The column 611 is slidably arranged in the slide groove 14, and the blocking blocks 612 are located on both sides of the slide groove 14. The width of the blocking blocks 612 is greater than the opening width of the slide groove 14, which effectively prevents the first sliding member 61 and the second sliding member 62 from accidentally falling out of the slide groove 14; a hole groove 613 for the locking link 6 to pass through is provided on the blocking block 612 at one end of the first sliding member 61 or / and the second sliding member 62 movably connected to the locking link 6.

[0050] Preferably, the blocking block 612 at the first end of the column 611 is fixedly connected to the column 611, and the blocking block 612 at the second end of the column 611 is threadedly connected to the column 611, and the locking link 6 is disposed on the blocking block 612 fixedly connected to the column 611. The blocking block 612 at the second end of the column 611 is threadedly connected to the column 611, which facilitates flexible adjustment of the spacing between the two blocking blocks 612, facilitating the movement of the first and second sliding members 61, 62 within the chute 14, and allowing the positions of the first and second sliding members 61, 62 to be fixed by tightening the blocking block 612 when needed.

[0051] Further, such as Figure 2 、 Figure 3 As shown, an anti-slip stopper 7 is provided at the end of the slide groove 14, and the anti-slip stopper 7 is threadedly connected to the slide groove 14. The anti-slip stopper 7 fixes the first sliding member 61 and the second sliding member 62 in the slide groove 14, further ensuring that the first sliding member 61 and the second sliding member 62 will not accidentally slip out of the slide groove 14 after being adjusted into place, thereby improving the clamping stability and reliability of the utility model.

[0052] Furthermore, the length of the nail body 31 provided on the clamping surface of the thin shank claw 3 is 4±1 mm;

[0053] Furthermore, the thin handle claw 3 is in a rectangular oval shape with smooth edges to reduce damage to surrounding tissues.

[0054] Furthermore, the thin handle claw 3 has a thickness of 3±1 mm, a length of 30±5 mm, and a width of 20±5 mm.

[0055] Furthermore, the angle between the clamping portion 11 and the connecting portion 12 is 120°; to avoid obstruction, the arrangement of the clamping portion 11 and the connecting portion 12 maximizes the surgical operation space.

[0056] Furthermore, the clamping portion 11 and the handle portion 13 are both straight rod-shaped and arranged in parallel; or the clamping portion 11 is an arc-shaped structure convex outward; if necessary, it can be temporarily bent according to the intraoperative situation.

[0057] Furthermore, the length of the clamping portion 11 of the first clamp handle 1 and the second clamp handle 2 is 4-6 cm.

[0058] Furthermore, the length of the connecting portion 12 between the first clamp handle 1 and the second clamp handle 2 is 6±1 cm.

[0059] Furthermore, the length of the handle portion 13 of the first pliers handle 1 and the second pliers handle 2 is 7±2 cm. The handle portion 13 is thicker than the connecting portion 12. The handle portion 13 is designed to be flat and cylindrical, and can also be roughened to prevent slipping.

[0060] The specific size design of the first clamp handle 1, the second clamp handle 2, and the thin handle claw 3 can better adapt to the longitudinal clamping of the vertebral body, avoid obstruction as much as possible, and maximize the surgical operation space.

[0061] Furthermore, the handle portion 13 of the first pliers handle 1 and the second pliers handle 2 is provided with a second anti-slip structure. The second anti-slip structure can be a plurality of anti-slip protrusions and anti-slip grooves provided on the outer peripheral surface of the handle portion 13, or a rough surface design is adopted to prevent slipping.

[0062] The patient lies prone during the operation, and the vertical clamping of the vertebral body is changed to left and right clamping relative to the surgeon. The clamping height is adjustable, and after grasping it firmly, it can be rotated and pulled. The two can also be used in combination to adapt to different movements. Its use in vertebral body resection and vertebral dislocation resection surgery greatly reduces the chance and degree of spinal nerve damage when the vertebral body is removed.

[0063] The method for using the longitudinal vertebral body clamping device of the utility model comprises the following steps:

[0064] (1) Separate the thin claws 3 of the first and second handles 1 and 2 and insert them longitudinally into the intervertebral space. According to the size of the vertebral body, select the corresponding sockets 4 on the first and second handles 1 and 2 to install the connector 5 so that the clamping surfaces of the two thin claws 3 of the first and second handles 4 and 2 remain substantially parallel.

[0065] Alternatively, according to the size of the vertebral body, select the corresponding sockets 4 on the first handle 4 and the second handle 2 to install the connecting piece 5, and then insert the thin handle claws of the first handle 1 and the second handle 2 into the intervertebral space longitudinally; when selecting the corresponding sockets 4, it is also necessary to keep the clamping surfaces of the two thin handle claws 3 of the first handle 4 and the second handle 2 basically parallel when clamping the vertebral body.

[0066] (2) Optionally, the distance between the first clamp handle 1 and the second clamp handle 2 is fixed by a locking mechanism. Specifically, the following steps may be included:

[0067] After the first clamp handle 1 and the second clamp handle 2 are connected by the connecting member 5 and the fastening nut 51 is fastened to the connecting member 5, the first sliding member 61 and the second sliding member 62 are respectively installed in the sliding groove 14 of the first clamp handle 1 and the second clamp handle 2, and moved into place (according to the setting of the blocking block 612 on the column 611 of the first sliding member 61 and the second sliding member 62, when the blocking block 612 at the second end of the column 611 is threadedly connected to the column 611, when the first sliding member 61 and the second sliding member 62 are moved, the blocking block 612 can be loosened, and when the first sliding member 61 and the second sliding member 62 are After moving into place, tighten the blocking block 612); while maintaining the clamping distance between the first clamp handle 4 and the second clamp handle 2, tighten the locking nuts 63 on both sides of the first sliding member 61 and / or the second sliding member 62 on the locking link 6 to fix the first sliding member 61 and / or the second sliding member 62 on the locking link 6, so that the clamping distance between the first clamp handle 1 and the second clamp handle 2 can be maintained; tighten the anti-slip block 7 on the slide groove 14 of the first clamp handle 1 and the second clamp handle 2 to fix the first sliding member 61 and the second sliding member 62 in the slide groove 14 to prevent the locking mechanism from falling off.

[0068] The method of using the longitudinal vertebral clamp device of the present invention can selectively separate the thin handle claws 3 of the first clamp handle 1 and the second clamp handle 2 or simultaneously insert them longitudinally into the intervertebral space according to the actual situation of the surgical position, so as to avoid squeezing the surrounding tissues and improve the safety and efficiency of the operation. It can also be used in positions where the space is extremely narrow and the angles are relatively tricky during surgery, thereby increasing the scope of application. After adjusting the distance between the first clamp handle 1 and the second clamp handle 2, the first clamp handle 1 and the second clamp handle 2 can be optionally fixed by a locking mechanism. During long-term clamping operations, manpower is saved for continuous and stable clamping, so that the clamping surfaces of the two thin handle claws 3 are kept as basically parallel as possible, and the clamping force between the two thin handle claws 3 is kept consistent and uniform, thereby preventing the risk of vertebral crushing due to excessive clamping force or displacement and slippage due to insufficient clamping force, thereby ensuring safety and reliability during the operation.

[0069] Those skilled in the art should understand that the above-mentioned specific embodiments are merely examples and not limitations. Various modifications, combinations, partial combinations and replacements can be made to the embodiments of the present invention according to design requirements and other factors. As long as they are within the scope of the attached claims or their equivalents, they fall within the scope of rights to be protected by the present invention.

Claims

1. A longitudinal vertebral body clamping device, comprising a clamp body, characterized in that: The pliers body includes a first pliers handle and a second pliers handle arranged opposite to each other, and the first pliers handle and the second pliers handle are movably connected so that the clamping ends of the first pliers handle and the second pliers handle have different spacings, and the clamping ends of the first pliers handle and the second pliers handle are both provided with thin handle claws, and the first pliers handle and the second pliers handle are both provided with multiple corresponding sockets at intervals, and a detachable connecting piece is provided between the sockets of the first pliers handle and the second pliers handle to achieve positioning and matching between the sockets at different positions of the first pliers handle and the second pliers handle.

2. A longitudinal vertebral clamping device according to claim 1, characterized in that: A first anti-slip structure is provided on the clamping surface of the thin handle claw; or / and the thin handle claw is in a rectangular oval shape; Or / and the thickness of the thin handle claw is 3±1 mm, the length is 30±5 mm, and the width is 20±5 mm.

3. A longitudinal vertebral clamping device according to claim 2, characterized in that: The first anti-slip structure provided on the clamping surface of the thin handle claw is a plurality of nail bodies.

4. A longitudinal vertebral clamping device according to claim 3, characterized in that: There are three nail bodies arranged on the clamping surface of the thin handle claw, and the three nail bodies form three vertices of an equilateral triangle, one nail body is located at one end close to the clamp body, and two nail bodies are located at one end away from the clamp body.

5. A longitudinal vertebral clamping device according to claim 1, characterized in that: The first pliers handle and the second pliers handle both include a clamping portion, a connecting portion and a handle portion connected in sequence, and the angle between the clamping portion and the connecting portion, and the angle between the connecting portion and the handle portion are both obtuse angles. The thin handle claw is arranged at the end of the clamping portion away from the connecting portion, and the socket is arranged at the connecting portion between the first pliers handle and the second pliers handle.

6. A longitudinal vertebral body clamping device according to claim 5, characterized in that: A locking mechanism is also provided between the first clamp handle and the second clamp handle to fix the clamping distance between the first clamp handle and the second clamp handle, and the locking mechanism includes a locking link, and a sliding groove provided along the length direction of the handle parts of the first clamp handle and the second clamp handle. The two ends of the locking link are respectively provided with a first sliding member and a second sliding member adapted to the sliding grooves of the first clamp handle and the second clamp handle, and the first sliding member and / or the second sliding member are movably connected to the locking link, and a locking nut is also provided on the locking link to fix the first sliding member and / or the second sliding member movably connected to the locking link on the locking link.

7. A longitudinal vertebral clamping device according to claim 6, characterized in that: The sliding member includes a column and blocking blocks provided at both ends of the column. The column is slidably provided in the slide groove. The blocking blocks are located on both sides of the slide groove, and the width of the blocking blocks is greater than the opening width of the slide groove. The blocking blocks at one end of the first sliding member or / and the second sliding member movably connected to the locking link are provided with a hole groove for the locking link to pass through. Or / and an anti-slip stopper is provided at the end of the chute, and the anti-slip stopper is threadedly connected to the chute.

8. A longitudinal vertebral body clamping device according to claim 3, characterized in that: The length of the nail body arranged on the clamping surface of the thin handle claw is 4±1 mm.

9. A longitudinal vertebral body clamping device according to claim 5, characterized in that: The angle between the clamping portion and the connecting portion is 120°; Or / and the clamping portion and the handle portion are both straight rod-shaped and arranged in parallel; Or / and the clamping portion is an arc-shaped structure convex outward; or / and the length of the clamping portion of the first clamp handle and the second clamp handle is 4-6 cm; or / and the length of the connecting portion between the first pliers handle and the second pliers handle is 6±1 cm; or / and the length of the handle portion of the first pliers handle and the second pliers handle is 7±2 cm; Or / and the handle portions of the first pliers handle and the second pliers handle are provided with a second anti-slip structure.

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