CN112568986B

CN112568986B - Vertebral plate distraction and prosthesis implantation device

Info

Publication number: CN112568986B
Application number: CN202011602809.3A
Authority: CN
Inventors: 王彩梅; 孙宇; 闫伟
Original assignee: Beijing AK Medical Co Ltd
Current assignee: Beijing AK Medical Co Ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2022-04-12
Anticipated expiration: 2040-12-29
Also published as: CN112568986A

Abstract

The invention provides a vertebral plate distraction and prosthesis implantation device, which comprises: the opening component comprises an opening main body and an overturning part, the opening main body is provided with a first opening part, the overturning part is provided with a second opening part arranged corresponding to the first opening part, and the overturning part can overturn relative to the opening main body so as to adjust the opening angle between the first opening part and the second opening part; the clamping component is movably arranged on the distraction main body and is provided with a clamping part used for clamping the prosthesis. Through the technical scheme that this application provided, can solve the unable problem of realizing implanting the prosthesis when strutting the gap among the prior art.

Description

Vertebral plate distraction and prosthesis implantation device

Technical Field

The invention relates to the technical field of medical instruments, in particular to a vertebral plate distraction and prosthesis implantation device.

Background

Spinal laminoplasty, which is an operation method for expanding the spinal canal by cutting one or both sides of the vertebral plate through a surgical operation to displace the vertebral plate to the posterior and lateral sides, is commonly used to treat severe cervical spinal stenosis, cervical posterior longitudinal ligament ossification, multi-segmented myelopathy, and the like.

Spinal laminoplasty opens the lamina into two "door" shapes, can enlarge the sagittal diameter of the spinal canal, and conform to the cylindrical structure of the spinal column, so that the spinal cord obtains even decompression. In clinic, after exposing bilateral vertebral plates from the posterior surgical approach of cervical vertebra, cutting off all spinous processes of the portal according to a plan, opening the vertebral plates from the center from bottom to top, cutting off ligaments (including ligamentum flavum, interspinous ligament and supraspinal ligament) above and below the portal in a transverse way, respectively making bone grooves from two sides 5mm away from the midline, leaving 2mm of bone as loose leaves, inserting a wide periosteum stripper into the separation part of the spinous processes and twisting 90 degrees, and then standing up the vertebral plates at two sides. Then sewing the top of the ligamentum flavum and the joint capsule by a fine silk thread and a small round needle, sewing each ligamentum flavum at two sides, leaving a bone window of about 10mm, covering with a fat sheet taken from the subcutaneous part, dividing the cut spinous process into small strips, placing the small strips at the loose leaf part, sewing the bottom layer muscle, placing a negative pressure drainage tube, and sewing in layers.

Because the double door needs to perform incision on both sides of the vertebral plate, the gap is opened to lift the spinous process, and a prosthesis is added in the gap and is matched with the vertebral plate for connection and fixation, which is commonly called 'roof-lifting operation'. In the prior art, it is not possible to implant a prosthesis while distracting the gap.

Disclosure of Invention

The invention provides a vertebral plate distraction and prosthesis implantation device, which aims to solve the problem that the prosthesis cannot be implanted while a gap is distracted in the prior art.

The invention provides a vertebral plate distraction and prosthesis implantation device, which comprises: the opening component comprises an opening main body and an overturning part, the opening main body is provided with a first opening part, the overturning part is provided with a second opening part arranged corresponding to the first opening part, and the overturning part can overturn relative to the opening main body so as to adjust the opening angle between the first opening part and the second opening part; the clamping component is movably arranged on the distraction main body and is provided with a clamping part used for clamping the prosthesis.

Further, the distraction assembly further comprises: the first end position of the first connecting piece is adjustably arranged on the spreading main body, and the overturning piece is hinged with the second end of the first connecting piece; the driving part is in driving connection with the overturning part to drive the overturning part to relatively prop open the main body to move and overturn.

Further, the strutting assembly further comprises a first pin shaft, an arc-shaped groove is formed in the side wall of the strutting main body and is located on the rear side of the first strutting portion, the arc-shaped groove gradually upwarps in the direction close to the first strutting portion, and the first pin shaft penetrates through the first end of the first connecting piece and the arc-shaped groove.

Further, the driving part includes: the transmission piece is movably arranged on the spreading main body, and the first end of the transmission piece is hinged with one end, far away from the second spreading part, of the turnover piece; the driving piece can rotate relative to the spreading main body, the axis of the driving piece coincides with or is parallel to the axis of the transmission piece, and the driving piece is in threaded fit with the second end of the transmission piece.

Further, strut the main part and have first mounting hole, the first end of driving piece is rotationally worn to establish in first mounting hole, and the first end of driving piece is provided with the external screw thread, and the second end of driving piece is provided with the internal thread, and the second end of driving piece is located the outside of first mounting hole in order to form first operation end.

Furthermore, the vertebral plate distraction and prosthesis implantation device further comprises a limiting part, a limiting groove is arranged on the side wall of the driving part, the limiting groove extends along the circumferential direction of the driving part, and the limiting part is movably arranged on the distraction main body in a penetrating way and corresponds to the limiting groove.

Further, the clamping assembly includes: the push-pull rod is movably arranged on the distraction main body; the clamping scissors are arranged on the push-pull rod, and the clamping part is arranged on the clamping scissors.

Furthermore, the clamping assembly further comprises a second connecting piece and a second pin shaft, one end of the second connecting piece is connected with one of the clamping scissors and the push-pull rod, and the other end of the second connecting piece is hinged with the other of the clamping scissors and the push-pull rod through the second pin shaft.

Furthermore, the vertebral plate distraction and prosthesis implantation device also comprises a rotation stopping structure, wherein the rotation stopping structure is arranged between the push-pull rod and the distraction component so as to limit the push-pull rod to rotate relative to the distraction component.

Furthermore, the push-pull rod is movably arranged in the opening component in a penetrating mode, the first end of the push-pull rod is arranged close to the first opening portion, the clamping scissors are located at the first end of the push-pull rod, and the second end of the push-pull rod is located on the outer side of the opening component to form a second operation end.

By applying the technical scheme of the invention, the vertebral plate distraction and prosthesis implantation device comprises a distraction assembly and a clamping assembly, wherein the distraction assembly comprises a distraction main body and a turnover part, and the clamping assembly is movably arranged on the distraction main body. Firstly, the turnover part is turned over relative to the distraction main body to adjust the opening angle between the first distraction part and the second distraction part, the first distraction part and the second distraction part can be matched to distract the gap, then the clamping part of the clamping assembly is used for clamping the prosthesis, and then the clamping assembly moves relative to the distraction main body to complete the implantation of the prosthesis. The utility model has the advantages of utilize and strut subassembly and centre gripping subassembly to cooperate, can strut the gap while implant the false body, satisfy the user demand.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 illustrates an exploded view of a lamina distracting and prosthetic implant device provided in accordance with an embodiment of the present invention;

FIG. 2 illustrates a schematic structural view of a lamina distracting and prosthetic implant device according to an embodiment of the present invention;

FIG. 3 illustrates a schematic structural view of a lamina distracting and prosthetic implant device according to an embodiment of the present invention;

FIG. 4 illustrates a cross-sectional view of a lamina distraction and prosthetic implant device according to an embodiment of the invention;

FIG. 5 illustrates a schematic structural view of a lamina distracting and prosthetic implant device according to an embodiment of the present invention;

FIG. 6 illustrates a cross-sectional view of a lamina distraction and prosthetic implant device according to an embodiment of the invention;

FIG. 7 is a schematic structural view of a lamina distracting and prosthetic implant device according to an embodiment of the present invention;

figure 8 illustrates a cross-sectional view of a lamina distraction and prosthetic implant device provided in accordance with an embodiment of the invention.

Wherein the figures include the following reference numerals:

10. a distraction assembly; 11. opening the main body; 111. a first spreader portion; 112. an arc-shaped slot; 113. a first mounting hole; 114. a first stop boss; 12. a turnover piece; 121. a second distracting portion; 122. a second stop boss; 13. a first connecting member; 14. a drive section; 141. a transmission member; 1411. an internal thread; 142. a drive member; 1421. an external thread; 1422. a first operation end; 1423. a limiting groove; 1424. a second mounting hole; 15. a first pin shaft; 20. a clamping assembly; 21. a clamping portion; 22. a push-pull rod; 221. a second operation terminal; 222. a rotation stopping surface; 23. clamping scissors; 24. a second connecting member; 25. a second pin shaft; 40. a rotation stopping structure; 50. a guide structure; 51. a guide groove; 52. and a guide post.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-8, an embodiment of the present invention provides a lamina distracting and prosthetic implant device that includes a distracting assembly 10 and a clamping assembly 20. The opening component 10 includes an opening main body 11 and an overturning member 12, the opening main body 11 has a first opening portion 111, the overturning member 12 has a second opening portion 121 corresponding to the first opening portion 111, and the overturning member 12 can be overturned relative to the opening main body 11 to adjust an opening angle between the first opening portion 111 and the second opening portion 121. The first spreading portion 111 and the second spreading portion 121 are engaged with each other to spread the gap. In this embodiment, the clamping assembly 20 is movably disposed to the distracting body 11, the clamping assembly 20 having a clamping portion 21 for clamping the prosthesis. The prosthesis may be delivered using the clamping assembly 20.

By applying the vertebral plate distraction and prosthesis implantation device provided by the embodiment, the turnover part 12 is firstly turned over relative to the distraction main body 11 to adjust the opening angle between the first distraction part 111 and the second distraction part 121, the first distraction part 111 and the second distraction part 121 can be used for matching to distract the gap, then the prosthesis is clamped by the clamping part 21 of the clamping component 20, and then the clamping component 20 moves relative to the distraction main body 11, so that the prosthesis implantation is completed. The distraction component 10 is matched with the clamping component 20, so that the prosthesis can be implanted while a gap is distracted, and the use requirement is met.

In the present embodiment, the movement means a movement in the axial direction of the distraction body 11.

As shown in fig. 1, in the present embodiment, the distracting assembly 10 further includes a first connecting member 13 and a driving portion 14, a first end of the first connecting member 13 is adjustably disposed on the distracting main body 11, the tilting member 12 is hinged to a second end of the first connecting member 13, and the driving portion 14 is drivingly connected to the tilting member 12 to drive the tilting member 12 to move and tilt relative to the distracting main body 11.

When the vertebral plate needs to be stretched, the first stretching portion 111 and the second stretching portion 121 are inserted into the gap, the driving portion 14 is used for driving the turnover part 12 to move relative to the stretching main body 11, and in the moving process of the turnover part 12, as the turnover part 12 is hinged to the second end of the first connecting part 13, under the action of the driving portion 14, the turnover part 12 can stretch the main body 11 to turn over relative to the stretching main body, so that the spinous process can move backwards while the gap is stretched, and the intervertebral foramen can be enlarged.

As shown in fig. 1, 2 and 7, the distraction assembly 10 further includes a first pin 15, an arc-shaped groove 112 is disposed on a side wall of the distraction main body 11, the arc-shaped groove 112 is located at a rear side of the first distraction portion 111, the arc-shaped groove 112 is tilted upward gradually in a direction close to the first distraction portion 111, and the first pin 15 is inserted into the first end of the first connecting member 13 and the arc-shaped groove 112. In the process that the driving part 14 drives the turning part 12 to move relative to the distraction main body 11, the first end of the first connecting part 13 can slide in the arc-shaped groove 112 through the first pin 15, and because the turning part 12 is hinged to the second end of the first connecting part 13, the turning part 12 can relatively distract the main body 11 and overturn while moving relative to the distraction main body 11, so that the spinous process can move backwards while distracting the gap. In this embodiment, the first pin 15 and the first connecting member 13 are of an integral structure.

In the present embodiment, the first spreading portion 111 is located at the front end of the spreading main body 11, the second spreading portion 121 is located at the front end of the turning member 12, the driving portion 14 is drivingly connected to the rear end of the turning member 12, and the hinge point between the second end of the first connecting member 13 and the turning member 12 is located between the front end of the turning member 12 and the rear end of the turning member 12.

Wherein, the radius of arc wall 112 is between 12mm to 14mm, and the arc length of arc wall 112 is between 7mm to 9mm, can guarantee that the gap struts enough big size and guarantees that the spinous process moves backward enough big distance. Specifically, the width of the arc-shaped groove 112 is 2 mm.

By adjusting the center position, radius, arc length and other parameters of the arc-shaped groove 112, the motion trajectory of the second opening portion 121 of the turnover part 12 can be controlled, and thus various use requirements can be met. In this embodiment, the lamina can be raised 6mm or 8mm using the lamina distractor and prosthetic implant device.

As shown in fig. 1 and 2, the driving portion 14 includes a transmission member 141 and a driving member 142, the transmission member 141 is movably disposed on the spreading body 11, a first end of the transmission member 141 is hinged to an end of the turning member 12 away from the second spreading portion 121, the driving member 142 is rotatable relative to the spreading body 11, an axis of the driving member 142 is coincident with or parallel to an axis of the transmission member 141, and the driving member 142 is in threaded engagement with a second end of the transmission member 141. When the driving member 142 rotates relative to the spreading main body 11, the driving member 142 can drive the transmission member 141 to translate relative to the spreading main body 11 through the threaded structure, and then the transmission member 141 can drive the turning member 12 to move and turn relative to the spreading main body 11.

In the present embodiment, the upper surface of the transmission member 141 is attached to the lower surface of the spreading body 11, and the transmission member 141 can translate along the axial direction of the spreading body 11.

As shown in fig. 1, the spreading body 11 has a first mounting hole 113, a first end of the driving member 142 is rotatably disposed in the first mounting hole 113, a first end of the driving member 142 is provided with an external thread 1421, a second end of the transmission member 141 is provided with an internal thread 1411, and the second end of the driving member 142 is located outside the first mounting hole 113 to form a first operating end 1422. A sleeve is disposed at the second end of the transmission member 141, the sleeve has an internal thread 1411, and the first end of the driving member 142 is disposed in the sleeve. By rotating the first operation end 1422, the rotation driving member 142 can be realized, which is convenient for operation.

As shown in fig. 1, the vertebral plate distraction and prosthesis implantation device further includes a limiting member, a limiting groove 1423 is disposed on the sidewall of the driving member 142, the limiting groove 1423 extends along the circumferential direction of the driving member 142, and the limiting member movably penetrates through the distraction main body 11 and is disposed corresponding to the limiting groove 1423. When the limiting element is located outside the limiting groove 1423, the driving element 142 can move and rotate relative to the spreading main body 11, and when the limiting element is inserted into the limiting groove 1423, the driving element 142 can rotate relative to the spreading main body 11. The limiting member is engaged with the limiting groove 1423 to limit the driving member 142, so as to prevent the driving member 142 from being separated from the first mounting hole 113.

As shown in fig. 1 and 2, in the present embodiment, the clamping assembly 20 includes a push-pull rod 22 and a clamping scissors 23, the push-pull rod 22 is movably disposed on the distracting body 11, the clamping scissors 23 are disposed on the push-pull rod 22, and the clamping portion 21 is disposed on the clamping scissors 23. By pushing and pulling the push-pull rod 22, the holding scissors 23 on the push-pull rod 22 can be driven to move, and the prosthesis can be transported by the holding scissors 23.

The push-pull rod 22 is movably disposed through the expansion assembly 10, a first end of the push-pull rod 22 is disposed near the first expansion portion 111, the holding scissors 23 are disposed at the first end of the push-pull rod 22, a second end of the push-pull rod 22 is disposed outside the expansion assembly 10 to form a second operation end 221, and the second operation end 221 is used for facilitating a user to operate.

As shown in fig. 1, in the present embodiment, the driving member 142 has a second mounting hole 1424, and the push-pull rod 22 is movably disposed through the second mounting hole 1424. By adopting the structure, the assembly space required by the clamping assembly 20 can be reduced, the integration level of the device is improved, and the miniaturization of the device is convenient to realize.

Specifically, the second mounting hole 1424 is coaxially disposed with the first mounting hole 113.

As shown in fig. 1, the clamping assembly 20 further includes a second connecting member 24 and a second pin 25, one end of the second connecting member 24 is connected to the clamping scissors 23, and the other end of the second connecting member 24 is hinged to the push-pull rod 22 through the second pin 25. The holding scissors 23 can rotate relative to the push-pull rod 22 through the second pin shaft 25, so as to adjust the pitch angle of the holding portion 21, and facilitate the implantation of the prosthesis into the human body.

In other embodiments, one end of the second connecting member 24 may be connected to the push-pull rod 22, and the other end of the second connecting member 24 may be hinged to the holding scissors 23 by a second pin 25.

In this embodiment, the vertebral plate distraction and prosthesis implantation device further includes a rotation stopping structure 40, and the rotation stopping structure 40 is disposed between the push-pull rod 22 and the distraction assembly 10 to limit the rotation of the push-pull rod 22 relative to the distraction assembly 10, so as to ensure that the clamping scissors 23 do not rotate relative to the distraction assembly 10, thereby ensuring the stability of the prosthesis during transportation.

As shown in fig. 1, the rotation-stopping surface 222 is provided on the side wall of the push-pull rod 22, and the rotation-stopping surface 222 is provided at an end of a screw by providing a stopper such as a screw on the spreading body 11, and the rotation-stopping of the push-pull rod 22 can be realized by the cooperation of the screw and the rotation-stopping surface 222.

In this embodiment, the expanding component 10 and the clamping component 20 are both symmetrical structures, and the symmetry line of the clamping component 20 is parallel to the symmetry line of the expanding component 10, so that the operation is convenient, and the accuracy of the operation is ensured.

As shown in fig. 1, the lamina distractor device further includes a guide structure 50, the guide structure 50 being disposed between the driver 141 and the distracting body 11. When the transmission member 141 moves relative to the spreading body 11, the transmission member 141 can be guided by the guide structure 50.

Wherein, guide structure 50 includes guide way 51 and guide post 52, and guide way 51 sets up on one of driving medium 141 and distraction body 11, and guide way 51 extends along the axial direction of distraction body 11, and guide post 52 sets up on the other of driving medium 141 and distraction body 11, and guide post 52 is movably worn to establish in guide way 51.

Moreover, when the driving member 142 rotates relative to the transmission member 141, the guiding groove 51 and the guiding post 52 cooperate to restrict the transmission member 141 from rotating relative to the spreading body 11, so as to ensure the transmission member 141 to move horizontally relative to the spreading body 11.

In order to limit the depth of the vertebral plate distraction device inserted into the vertebral plate gap, a first stopping boss 114 is arranged on the distraction main body 11, a second stopping boss 122 is arranged on the turnover part 12, the first stopping boss 114 is positioned behind the first distraction part 111, and the second stopping boss 122 is positioned behind the second distraction part 121.

In order to ensure the contact firmness of the vertebral plate distraction device and the bone, anti-slip structures are arranged on the first distraction part 111 and the second distraction part 121. In this embodiment, the anti-slip structure is a plurality of tooth-shaped bosses.

In this embodiment, the front end of the distraction main body 11 includes two support arms parallel to each other, the first distraction portion 111 is disposed on each of the two support arms, the vertebral plate distraction device includes two turning parts 12, and the two turning parts 12 are disposed on the two support arms respectively, so as to ensure the stability.

Wherein the lamina distractor further comprises an angle indicator, the angle indicator being provided on the flipper 12. The angle at which the flip 12 is opened with respect to the distracting body 11 can be displayed by the angle indicator. In other embodiments, the angle indicator may be provided on the spreading body 11, or on both the spreading body 11 and the flipper 12.

Specifically, the angle indicator includes an angle indicating plate provided on the flip 12, and an upper surface of the angle indicating plate is an inclined surface. When the turning member 12 is turned to a predetermined angle with respect to the spreading main body 11, the upper surface of the angle indicating plate is parallel to the lower surface of the spreading main body 11, so as to prompt the user that the turning member 12 is turned in place. The angle indicator may be a component with an angle scale provided on the distracting body 11 and/or the flipper 12.

In this embodiment, the lamina distractor and prosthetic implant device is adapted for use in an internal spinal fixation procedure.

Through the device that this embodiment provided, can strut the gap while with prosthetic implantation, can also realize the vertebral plate and strut the effect of predetermined width, reach promotion (6mm, 8mm) vertebral plate, and then satisfy the user demand.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A lamina distracting and prosthetic implant device, comprising:

the stretching assembly (10) comprises a stretching main body (11) and an overturning part (12), wherein the stretching main body (11) is provided with a first stretching part (111), the overturning part (12) is provided with a second stretching part (121) arranged corresponding to the first stretching part (111), and the overturning part (12) can overturn relative to the stretching main body (11) so as to adjust the opening angle between the first stretching part (111) and the second stretching part (121);

a gripping assembly (20) movably arranged on the distraction body (11), the gripping assembly (20) having a gripping portion (21) for gripping a prosthesis;

the distractor assembly (10) further comprises:

the first end position of the first connecting piece (13) is adjustably arranged on the distraction body (11), and the turnover piece (12) is hinged with the second end of the first connecting piece (13);

the driving part (14) is in driving connection with the overturning part (12) so as to drive the overturning part (12) to move and overturn relative to the spreading main body (11);

the strutting assembly (10) further comprises a first pin shaft (15), an arc-shaped groove (112) is formed in the side wall of the strutting main body (11), the arc-shaped groove (112) is located on the rear side of the first strutting portion (111), the arc-shaped groove (112) gradually upwarps in the direction close to the first strutting portion (111), and the first pin shaft (15) penetrates through the first end of the first connecting piece (13) and the arc-shaped groove (112);

the clamping assembly (20) comprises:

a push-pull rod (22) movably disposed on the distracting body (11);

the clamping scissors (23) are arranged on the push-pull rod (22), and the clamping portion (21) is arranged on the clamping scissors (23).

2. The laminar distraction and prosthetic implant device according to claim 1, wherein said drive portion (14) comprises:

the transmission piece (141) is movably arranged on the expanding main body (11), and a first end of the transmission piece (141) is hinged with one end, far away from the second expanding part (121), of the overturning piece (12);

the driving piece (142) can rotate relative to the opening main body (11), the axis of the driving piece (142) is coincident with or parallel to the axis of the transmission piece (141), and the driving piece (142) is in threaded fit with the second end of the transmission piece (141).

3. The lamina distraction and prosthetic implant device of claim 2, wherein the distraction body (11) has a first mounting hole (113), the first end of the driving member (142) is rotatably disposed through the first mounting hole (113), the first end of the driving member (142) is provided with external threads (1421), the second end of the driving member (141) is provided with internal threads (1411), and the second end of the driving member (142) is located outside the first mounting hole (113) to form a first operating end (1422).

4. The device according to claim 2, further comprising a limiting member, wherein a limiting groove (1423) is disposed on a sidewall of the driving member (142), the limiting groove (1423) extends along a circumferential direction of the driving member (142), and the limiting member is movably disposed on the distracting body (11) and corresponding to the limiting groove (1423).

5. The laminar distraction and prosthetic implant device according to claim 1, wherein the clamping assembly (20) further comprises a second connector (24) and a second pin (25), one end of the second connector (24) being connected to one of the clamping shears (23) and the push-pull rod (22), and the other end of the second connector (24) being hinged to the other of the clamping shears (23) and the push-pull rod (22) by the second pin (25).

6. The lamina distraction and prosthetic implant device of claim 1, further comprising a rotation stop structure (40), the rotation stop structure (40) being disposed between the push-pull rod (22) and the distraction assembly (10) to limit rotation of the push-pull rod (22) relative to the distraction assembly (10).

7. The lamina distraction and prosthetic implant device of claim 1, wherein the push-pull rod (22) is movably disposed through the distraction assembly (10), a first end of the push-pull rod (22) is positioned proximate to the first distraction portion (111), the clamping shears (23) are positioned at the first end of the push-pull rod (22), and a second end of the push-pull rod (22) is positioned outside of the distraction assembly (10) to form a second operative end (221).