Cervical spinous process fixing device, operating device and fixing system

Abstract

The invention discloses a cervical vertebra spinous process fixing device which comprises a first fixing plate and a second fixing plate, two first through holes are formed in the first fixing plate, two second through holes are formed in the second fixing plate, a locking rod is arranged between the first through holes and the second through holes in a penetrating mode, and positioning protrusions and sharp protrusions are arranged on the first fixing plate and the second fixing plate. The invention further discloses an operating device which comprises two operating rods hinged to each other, clamping plates are connected to the clamping ends of the two operating rods, positioning grooves, movable clamping arms and fixed clamping arms are arranged on the two clamping plates, and the movable clamping arms can be driven by a driving structure to get close to or get away from the fixed clamping arms. The invention further discloses a cervical vertebra spinous process fixing system comprising the cervical vertebra spinous process fixing device and an operation device. According to the cervical spine process fixing device, the operation device and the fixing system, spinous processes of three adjacent vertebral bodies of the cervical vertebra can be mutually fixed.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a device for fixing the spinous process of the cervical vertebra. Background Art

[0002] During cervical fusion surgery, it is often necessary to fix the spinous processes of three adjacent cervical vertebrae (e.g., vertebrae 4-6 or vertebrae 5-7) to limit and stabilize the spacing between the spinous processes, relieve compressed nerves and blood vessels, and alleviate the patient's pain and discomfort. However, existing technology lacks a fixation device capable of fixing the spinous processes of three adjacent cervical vertebrae. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a cervical spinous process fixation device, an operating device and a fixation system, which can fix the spinous processes of three adjacent cervical vertebrae to each other.

[0004] The cervical spinous process fixing device in the present invention includes a first fixing plate and a second fixing plate arranged relatively to each other, the first fixing plate and the second fixing plate are both strip plates, two first through holes are arranged at intervals along the length direction on the first fixing plate, and two second through holes are arranged at intervals along the length direction on the second fixing plate, the two first through holes are arranged one-to-one with the two second through holes, a locking rod is inserted between the first through hole and the corresponding second through hole, one end of the locking rod is clamped in the first through hole, and the other end of the locking rod is connected to the second through hole by a locking nail, pointed protrusions are provided on the two opposite sides of the first fixing plate and the second fixing plate, a first positioning protrusion is provided on the side of the first fixing plate away from the second fixing plate, and a second positioning protrusion is provided on the side of the second fixing plate away from the first fixing plate.

[0005] The cervical spinous process fixation device of the present invention, wherein the first through hole includes a hemispherical portion and a frustum portion that are interconnected, the hemispherical portion and the frustum portion are arranged in sequence along the direction from the first fixing plate to the second fixing plate, the hemispherical portion and the frustum portion are coaxially arranged, the aperture of the hemispherical portion gradually increases along the direction from the second fixing plate to the first fixing plate, and the aperture of the frustum portion gradually increases along the direction from the first fixing plate to the second fixing plate, the locking rod includes a head and a rod portion that are interconnected, the head is spherical and matches the hemispherical portion of the first through hole, the aperture of the hemispherical portion and the frustum portion is smaller than the outer diameter of the locking rod head and larger than the outer diameter of the rod portion, the rod portion of the locking rod passes through the hemispherical portion and the frustum portion of the first through hole in sequence and is inserted into the second through hole, and the head of the locking rod is clamped in the hemispherical portion of the first through hole.

[0006] The cervical spinous process fixation device of the present invention, wherein the first positioning protrusions are provided in two, the two first positioning protrusions are both semi-cylindrical, the axial directions of the two first positioning protrusions are arranged along the width direction of the first fixing plate, the two first positioning protrusions are respectively arranged in one-to-one correspondence with the two first through holes, and the two first through holes respectively penetrate the respectively corresponding first positioning protrusions, and the second positioning protrusions are provided in two, the two second positioning protrusions are both semi-cylindrical, the axial directions of the two second positioning protrusions are arranged along the width direction of the second fixing plate, the two second positioning protrusions are respectively arranged in one-to-one correspondence with the two second through holes, and the two second through holes respectively penetrate the respectively corresponding second positioning protrusions.

[0007] The cervical spinous process fixation device of the present invention, wherein the two second positioning protrusions of the second fixing plate are provided with threaded holes, the threaded holes are arranged along the axial direction of the second positioning protrusion and are connected to the second through hole passing through the second positioning protrusion, and the threaded holes are threadedly connected with locking nails, and the locking nails in the two threaded holes are respectively abutted against the locking rod portions in the two second through holes.

[0008] In the cervical spinous process fixation device of the present invention, both long side ends of the first fixation plate are provided with first clamping grooves, and both long side ends of the second fixation plate are provided with second clamping grooves.

[0009] The operating device of the present invention includes two mutually hinged operating rods, the hinge parts of the two operating rods are located between the two ends of the two operating rods, the two operating rods are arranged in an X shape, one end of the two operating rods is a clamping end, the other end of the two operating rods is a gripping end, and the two clamping ends are connected to a clamping plate, and the two clamping plates are respectively a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are arranged opposite to each other, a first positioning groove is provided on the side of the first clamping plate opposite to the second clamping plate, a second positioning groove is provided on the side of the second clamping plate opposite to the first clamping plate, and a first fixing clamp is provided on the side of the first clamping plate opposite to the second clamping plate An arm and a first movable clamping arm, the first fixed clamping arm is fixedly provided on the first clamping plate, the first movable clamping arm is slidably provided on the first clamping plate, a first driving structure is provided on the first clamping plate, the first driving structure can drive the first movable clamping arm to slide along the first clamping plate towards or away from the first fixed clamping arm, a second fixed clamping arm and a second movable clamping arm are provided on the side of the second clamping plate opposite to the first clamping plate, the second fixed clamping arm is fixedly provided on the second clamping plate, the second movable clamping arm is slidably provided on the second clamping plate, a second driving structure is provided on the second clamping plate, the second driving structure can drive the second movable clamping arm to slide along the second clamping plate towards or away from the second fixed clamping arm.

[0010] The operating device of the present invention, wherein the first clamping plate is provided with a first strip slide groove on the side opposite to the second clamping plate, the first movable clamping arm is slidably arranged in the first strip slide groove, the first driving structure includes a first screw, the first screw is rotatably installed in the first strip slide groove, the axial direction of the first screw is the same as the length direction of the first strip slide groove, the first movable clamping arm is threadedly connected to the first screw, the first fixed clamping arm is fixedly arranged on the first clamping plate at one end of the first strip slide groove, the end of the first screw away from the first fixed clamping arm extends to the outside of the first clamping plate and is connected to the first rotating handle, and the first clamping plate is provided with an end of the first rotating handle connected to the clamping end.

[0011] The operating device of the present invention, wherein the side of the second clamping plate opposite to the first clamping plate is provided with a second strip slide groove, the second movable clamping arm is slidably arranged in the second strip slide groove, the second driving structure includes a second screw, the second screw is rotatably installed in the second strip slide groove, the axial direction of the second screw is the same as the length direction of the second strip slide groove, the second movable clamping arm is threadedly connected to the second screw, the second fixed clamping arm is fixedly provided on the second clamping plate at one end of the second strip slide groove, the end of the second screw away from the second fixed clamping arm extends to the outside of the second clamping plate and is connected to the second rotating handle, and the second clamping plate is provided with a second rotating handle at one end connected to the clamping end.

[0012] The operating device of the present invention, wherein the first positioning groove is a semi-cylindrical groove passing through the first clamping plate, the axial direction of the first positioning groove is the same as the axial direction of the first screw and the length direction of the first strip slide, the first positioning groove is set as two, and the two first positioning grooves are respectively arranged on the opposite sides of the first strip slide, the second positioning groove is a semi-cylindrical groove passing through the second clamping plate, the axial direction of the second positioning groove is the same as the axial direction of the second screw and the length direction of the second strip slide, the second positioning groove is set as two, and the two second positioning grooves are respectively arranged on the opposite sides of the second strip slide.

[0013] The cervical spinous process fixation system in the present invention includes the above-mentioned cervical spinous process fixation device and the above-mentioned operating device, the first fixing plate is clamped between the first movable clamping arm and the first fixed clamping arm of the first clamping plate, the side of the first clamping plate opposite to the second clamping plate abuts on the side of the first fixing plate away from the second fixing plate, the first positioning protrusion is located in the first positioning groove, the second fixing plate is clamped between the second movable clamping arm and the second fixed clamping arm of the second clamping plate, the side of the second clamping plate opposite to the first clamping plate abuts on the side of the second fixing plate away from the first fixing plate, and the second positioning protrusion is located in the second positioning groove.

[0014] The difference between the present invention and the prior art is that the present invention can fix the spinous processes of three adjacent vertebrae of the cervical spine to each other. When in use, the two locking rods are respectively inserted into the two first through holes of the first fixing plate, and then the first fixing plate is placed between the first fixed clamping arm and the first movable clamping arm of the first clamping plate, and the side of the first fixing plate provided with the first positioning protrusion is abutted against the side of the first clamping plate provided with the first positioning groove, and the first positioning protrusion is located in the first positioning groove. At this time, one end of the locking rod is located in the first through hole and will not slip out of the first through hole due to the obstruction of the first clamping plate. Then, the first movable clamping arm is driven by the first driving structure to slide close to the first fixed clamping arm until the first fixing plate is clamped between the first movable clamping arm and the first fixed clamping arm. Then, the second fixing plate is placed between the second fixed clamping arm and the second movable clamping arm of the second clamping plate, and the side of the second fixing plate provided with the second positioning protrusion is abutted against the side of the second clamping plate provided with the second positioning groove, and the second positioning protrusion is located in the second positioning groove. Then, the second movable clamping arm is driven by the second driving structure to close The second fixed clamping arm slides close to the second fixed clamping arm until the second fixed plate is clamped between the second movable clamping arm and the second fixed clamping arm, then the holding ends of the two operating rods are held, the holding end of one operating rod and the first clamping plate and the first fixed plate thereon are placed on the left side of the spinous process of the cervical vertebra to be fixed, the clamping end of the other operating rod and the second clamping plate and the second fixed plate thereon are placed on the right side of the spinous process of the cervical vertebra to be fixed, then the holding ends of the two operating rods are moved closer to each other, so that the clamping ends of the two operating rods are also moved closer to each other, during this process, the two locking rods are respectively passed through the three The gaps between the three vertebrae (there are two gaps between the three vertebrae, and the two locking rods pass through the two gaps respectively), and the other ends of the two locking rods are respectively inserted into the two second through holes of the second fixing plate, and the two clamping ends continue to move closer to each other until the sharp protrusion on the first fixing plate penetrates the left side of the spinous process and the sharp protrusion on the second fixing plate penetrates the right side of the spinous process, and then the other ends of the two locking rods are fixedly connected to the two second through holes by locking nails, so that the two fixing plates fix the spinous processes of the three adjacent cervical vertebrae to each other. Then, the first movable clamping arm is made to slide away from the first fixed clamping arm through the first driving structure to release the first fixed plate, and the second movable clamping arm is made to slide away from the second fixed arm through the second driving structure to release the second fixed plate. Then, the gripping ends of the two operating rods are made to move away from each other, and the clamping ends of the two operating rods are also made to move away from each other. Then, the two clamping ends drive the first clamping plate and the second clamping plate to move away from each other, that is, the first clamping plate is separated from the first fixed plate, and the second clamping plate is separated from the second fixed plate. Finally, the operating device is withdrawn. It can be seen that the present invention can fix the spinous processes of three adjacent cervical vertebrae to each other.

[0015] The present invention will be further described below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of the cervical spinous process fixation device of the present invention;

[0017] Figure 2 is a top view of the cervical spinous process fixation device of the present invention;

[0018] Figure 3 It is a left side view of the cervical spinous process fixation device of the present invention;

[0019] Figure 4 It is a right side view of the cervical spinous process fixation device of the present invention;

[0020] Figure 5 This is a front view of the first fixing plate and the locking rod in the present invention;

[0021] Figure 6 A top view of the first fixing plate and the locking rod of the present invention;

[0022] Figure 7 It is a left side view of the first fixing plate and the locking rod in the present invention;

[0023] Figure 8 It is a right side view of the first fixing plate and the locking rod in the present invention;

[0024] Figure 9 Schematic diagram of the connection between the locking rod and the first fixing plate in the present invention;

[0025] Figure 10 This is a front view of the second fixing plate in the present invention;

[0026] Figure 11 is a top view of the second fixing plate in the present invention;

[0027] Figure 12 It is a left side view of the second fixing plate in the present invention;

[0028] Figure 13 It is a right side view of the second fixing plate in the present invention;

[0029] Figure 14 It is a front view of the operating device of the present invention;

[0030] Figure 15 This is a front view of the first clamping plate in the present invention;

[0031] Figure 16 A top view of the first clamping plate of the present invention;

[0032] Figure 17 It is a right side view of the first clamping plate in the present invention;

[0033] Figure 18For the Figure 17 Cross-sectional view along line AA;

[0034] Figure 19 This is a front view of the second clamping plate in the present invention;

[0035] Figure 20 is a top view of the second clamping plate in the present invention;

[0036] Figure 21 It is a left side view of the second clamping plate in the present invention;

[0037] Figure 22 For the Figure 21 Cross-sectional view along the midline BB;

[0038] Figure 23 This is a front view of the cervical spinous process fixation system of the present invention;

[0039] Figure 24 For the Figure 23 C-direction view in;

[0040] Figure 25 For the Figure 23 D-direction view in;

[0041] Figure 26 This is a top view of the cervical spinous process fixation device in the present invention in use.

[0042] In the figure: 1, first fixing plate; 2, second fixing plate; 3, first positioning protrusion; 4, second positioning protrusion; 5, spike; 6, locking rod; 7, first clamping groove; 8, second clamping groove; 9, locking pin; 10, first through hole; 11, second through hole; 12, hemispherical portion; 13, frustum portion; 14, head; 15, rod; 16, threaded hole; 17, operating rod; 18, gripping end; 19, clamping end; 20, pin; 21, first rotating handle; 22, first movable clamping arm; 23, first clamping plate; 24, first fixing Clamping arm; 25. Second rotating handle; 26. Second movable clamping arm; 27. Second clamping plate; 28. Second fixed clamping arm; 29. First screw; 30. First positioning groove; 31. First strip slide; 32. First bearing; 33. Second positioning groove; 34. Second strip slide; 35. Second bearing; 36. Fourth vertebra; 37. Fifth vertebra; 38. Sixth vertebra; 39. Vertebral body; 40. Spinous process of fourth vertebra; 41. Spinous process of fifth vertebra; 42. Spinous process of sixth vertebra; 43. Spinous process. DETAILED DESCRIPTION

[0043] like Figure 1 As shown, combined with Figure 2-13As shown, the cervical spinous process fixation device in the present invention includes a first fixing plate 1 and a second fixing plate 2 arranged relatively to each other, and the first fixing plate 1 and the second fixing plate 2 are both strip plates, and two first through holes 10 are arranged at intervals along the length direction on the first fixing plate 1, and two second through holes 11 are arranged at intervals along the length direction on the second fixing plate 2, and the two first through holes 10 are arranged one-to-one with the two second through holes 11, and a locking rod 6 is inserted between the first through hole 10 and the corresponding second through hole 11, one end of the locking rod 6 is clamped in the first through hole 10, and the other end of the locking rod 6 is fixedly connected to the second through hole 11 by a locking nail 9, and pointed protrusions 5 are provided on the two opposite sides of the first fixing plate 1 and the second fixing plate 2, and a first positioning protrusion 3 is provided on the side of the first fixing plate 1 away from the second fixing plate 2, and a second positioning protrusion 4 is provided on the side of the second fixing plate 2 away from the first fixing plate 1.

[0044] The first positioning protrusion 3 and the pointed protrusion 5 are fixed on two opposite side surfaces of the first fixing plate 1 , respectively. The second positioning protrusion 4 and the pointed protrusion 5 are fixed on two opposite side surfaces of the second fixing plate 2 , respectively.

[0045] The first fixing plate 1 and the second fixing plate 2 are arranged vertically in width direction and horizontally in length direction. Figure 3 、 4 As shown in Figures 7, 8, 12 and 13, one long side end of the first fixing plate 1 and the second fixing plate 2 (the upper long side end shown in the figure) are both arc-shaped and concave inward, and the other long side end of the first fixing plate 1 and the second fixing plate 2 (the lower long side end shown in the figure) are both arc-shaped and convex outward, that is, the first fixing plate 1 and the second fixing plate 2 are both arc-shaped straight strips, which can better fit the cervical vertebrae.

[0046] like Figure 9As shown, the cervical spinous process fixation device of the present invention, wherein the first through hole 10 includes a hemispherical portion 12 and a truncated cone portion 13 that are interconnected, and the hemispherical portion 12 and the truncated cone portion 13 are arranged in sequence along the direction from the first fixing plate 1 to the second fixing plate 2, that is, the hemispherical portion 12 is arranged close to the side of the first fixing plate 1 away from the second fixing plate 2, and the truncated cone portion 13 is arranged close to the side of the first fixing plate 1 facing the second fixing plate 2, the hemispherical portion 12 and the truncated cone portion 13 are coaxially arranged, and the aperture of the hemispherical portion 12 gradually increases along the direction from the second fixing plate 2 to the first fixing plate 1, and the truncated cone portion 13 is arranged coaxially. The aperture of the frustum portion 13 gradually increases in the direction from the first fixed plate 1 to the second fixed plate 2. The locking rod 6 includes a head 14 and a rod 15 connected to each other. The head 14 is spherical and matches the hemispherical portion 12 of the first through hole 10. The aperture of the connection between the hemispherical portion 12 and the frustum portion 13 is smaller than the outer diameter of the head 14 of the locking rod 6 and larger than the outer diameter of the rod 15. The rod 15 of the locking rod 6 passes through the hemispherical portion 12 and the frustum portion 13 of the first through hole 10 in sequence and is inserted into the second through hole 11. The head 14 of the locking rod 6 is clamped in the hemispherical portion 12 of the first through hole 10.

[0047] Since the aperture at the connection between the hemispherical portion 12 and the frustum portion 13 is smaller than the outer diameter of the head portion 14 of the locking rod 6 and larger than the outer diameter of the rod portion 15, the aperture at the connection between the hemispherical portion 12 and the frustum portion 13 is the minimum aperture of the first through hole 10, so the rod portion 15 of the locking rod 6 can pass through the hemispherical portion 12 and the frustum portion 13 of the first through hole 10 in sequence, while the head portion 14 will not pass from the hemispherical portion 12 into the frustum portion 13, but will be clamped in the hemispherical portion 12.

[0048] Due to the presence of the hemispherical portion 12 and the truncated cone portion 13, the locking rod 6 can be adjusted in direction relative to the axial direction of the hemispherical portion 12 and the truncated cone portion 13, as shown in FIG. Figure 9 As shown, when the rod portion 15 of the locking rod 6 is axially offset relative to the hemispherical portion 12 and the frustum portion 13 (at this time, the head 14 of the locking rod 6 slides in the hemispherical portion 12), when the rod portion 15 abuts against the side wall of the frustum portion 13, the locking rod 6 is offset to a maximum angle, which is set to 7.5 degrees.

[0049] like Figure 1-7As shown in , 10-11, and 13, the cervical spinous process fixation device of the present invention, wherein the first positioning protrusions 3 are set as two, the two first positioning protrusions 3 are semi-cylindrical, the axial directions of the two first positioning protrusions 3 are arranged along the width direction of the first fixing plate 1, the two first positioning protrusions 3 are arranged in one-to-one correspondence with the two first through holes 10, and the two first through holes 10 respectively penetrate the corresponding first positioning protrusions 3 respectively, and the second positioning protrusions 4 are set as two, the two second positioning protrusions 4 are semi-cylindrical, the axial directions of the two second positioning protrusions 4 are arranged along the width direction of the second fixing plate 2, the two second positioning protrusions 4 are arranged in one-to-one correspondence with the two second through holes 11 respectively, and the two second through holes 11 respectively penetrate the corresponding second positioning protrusions 4.

[0050] The first positioning protrusion 3 is integrally formed with the first fixing plate 1, and the second positioning protrusion 4 is also integrally formed with the second fixing plate 2. As described above, the width directions of the first fixing plate 1 and the second fixing plate 2 are both arranged vertically, while the axial direction of the first positioning protrusion 3 is arranged along the width direction of the first fixing plate 1, that is, the axial direction of the first positioning protrusion 3 is arranged vertically, while the axial direction of the second positioning protrusion 4 is arranged along the width direction of the second fixing plate 2, that is, the axial direction of the second positioning protrusion 4 is arranged vertically.

[0051] like Figure 2 、 4 As shown in Figures 1 and 11, a cervical spinous process fixation device according to the present invention is provided with a threaded hole 16 at each of the two second positioning protrusions 4 of the second fixing plate 2. The threaded hole 16 is arranged along the axial direction of the second positioning protrusion 4 and is connected to the second through hole 11 that passes through the second positioning protrusion 4. A locking nail 9 is connected to the inner thread of the threaded hole 16. The locking nail 9 in the two threaded holes 16 respectively abuts against the rod portion 15 of the locking rod 6 in the two second through holes 11, that is, the locking nail 9 locks and fixes one end of the rod portion 15 of the locking rod 6 in the second through hole 11. In this embodiment, a threaded hole 16 is provided only at one end of the second positioning protrusion 4 (i.e., the upper end in the figure), that is, the threaded hole 16 is provided at the long side end of the second fixing plate 2 that is inwardly arc-shaped and recessed (i.e., the upper long side end of the second fixing plate 2 in the figure).

[0052] like Figure 3 、 4 As shown in Figures 7, 8, 12 and 13, the cervical spinous process fixation device of the present invention, wherein the two long side ends of the first fixing plate 1 (the upper long side end and the lower long side end shown in the figure) are both provided with a first clamping groove 7; the two long side ends of the second fixing plate 2 (the upper long side end and the lower long side end shown in the figure) are both provided with a second clamping groove 8.

[0053] like Figure 14 As shown, combined with Figure 15-22As shown, the operating device of the present invention includes two mutually hinged operating rods 17, and the hinged parts of the two operating rods 17 are located between the two ends of the two operating rods 17 (that is, the hinged part is located between the two ends of one operating rod 17 and also between the two ends of the other operating rod 17). The two operating rods 17 are arranged in an X shape, that is, the two operating rods 17 are arranged in a clamp shape, and the two operating rods 17 are hinged by a pin 20. One end of the two operating rods 17 is a clamping end 19, and the other end of the two operating rods 17 is a gripping end 18. The two clamping ends 19 are connected to a clamping plate, and the two clamping plates are straight plates. The two clamping plates are respectively a first clamping plate 23 and a second clamping plate 27. The first clamping plate 23 and the second clamping plate 27 are arranged opposite to each other. A first positioning groove 30 is provided on the side of the first clamping plate 23 opposite to the second clamping plate 27, and a second positioning groove 33 is provided on the side of the second clamping plate 27 opposite to the first clamping plate 23. A first fixed clamping arm 24 and a first movable clamping arm 22 are provided on the side of the first clamping plate 23 opposite to the second clamping plate 27. The first fixed clamping arm 24 is fixedly provided on the first clamping plate 23, the first movable clamping arm 22 is slidably arranged on the first clamping plate 23, and the first clamping plate 23 is provided with a first driving structure, and the first driving structure can drive the first movable clamping arm 22 to slide along the first clamping plate 23 towards or away from the first fixed clamping arm 24, and the second clamping plate 27 is provided with a second fixed clamping arm 28 and a second movable clamping arm 26 on the side opposite to the first clamping plate 23, the second fixed clamping arm 28 is fixed on the second clamping plate 27, and the second movable clamping arm 26 is slidably arranged on the second clamping plate 27, and the second clamping plate 27 is provided with a second driving structure, and the second driving structure can drive the second movable clamping arm 26 to slide along the second clamping plate 27 towards or away from the second fixed clamping arm 28.

[0054] The operating device of the present invention, such as Figure 17 、 18 As shown, a first strip-shaped slot 31 is provided on the side of the first clamping plate 23 opposite to the second clamping plate 27, and the first movable clamping arm 22 is slidably arranged in the first strip-shaped slot 31, and the first driving structure includes a first screw 29, and the first screw 29 is rotatably installed in the first strip-shaped slot 31, and the axial direction of the first screw 29 is the same as the length direction of the first strip-shaped slot 31, and both are arranged vertically. The first movable clamping arm 22 is threadedly connected to the first screw 29, and the first fixed clamping arm 24 is fixedly provided on the first clamping plate 23 at one end of the first strip-shaped slot 31 (the lower end shown in the figure), and the first fixed clamping arm 24 is located below the first movable clamping arm 22, and the end of the first screw 29 away from the first fixed clamping arm 24 (the upper end shown in the figure) extends to the outside of the first clamping plate 23 and is fixedly connected to the first rotating handle 21, as shown Figure 14 、 23 As shown in FIG. 24 , one end (the upper end shown in the figure) of the first clamping plate 23 provided with the first rotating handle 21 is fixedly connected to the clamping end 19 .

[0055] The first screw rod 29 is rotatably mounted in the first strip-shaped chute 31 via a first bearing 32. When the first screw rod 29 is rotated by the first rotating handle 21, the first movable clamping arm 22 is slidably mounted in the first strip-shaped chute 31 and is restrained by the first strip-shaped chute 31. Therefore, the first movable clamping arm 22 does not rotate along with the first screw rod 29. Moreover, since the first movable clamping arm 22 is threadedly connected to the first screw rod 29, the first movable clamping arm 22 can only slide along the first strip-shaped chute 31. Since the first fixed clamping arm 24 is fixed to the first clamping plate 23 at the lower end of the first strip-shaped chute 31, the first movable clamping arm 22 can slide downwardly toward the first fixed clamping arm 24 or upwardly away from the first fixed clamping arm 24 along the first strip-shaped chute 31. This enables the first driving structure to drive the first movable clamping arm 22 to slide along the first clamping plate 23 toward or away from the first fixed clamping arm 24.

[0056] The operating device of the present invention, such as Figure 21 、 22 As shown, a second strip-shaped slot 34 is provided on the side of the second clamping plate 27 opposite to the first clamping plate 23, and the second movable clamping arm 26 is slidably arranged in the second strip-shaped slot 34, and the second driving structure includes a second screw, which is rotatably installed in the second strip-shaped slot 34, and the axial direction of the second screw is the same as the length direction of the second strip-shaped slot 34. Both are arranged vertically, and the second movable clamping arm 26 is threadedly connected to the second screw, and the second fixed clamping arm 28 is fixedly provided on the second clamping plate 27 at one end of the second strip-shaped slot 34 (the lower end shown in the figure), and the second fixed clamping arm 28 is located below the second movable clamping arm 26, and the end of the second screw away from the second fixed clamping arm 28 (the upper end shown in the figure) extends to the outside of the second clamping plate 27 and is fixedly connected to the second rotating handle 25, as shown Figure 14 、 23 As shown in FIG. 25 , one end (the upper end shown in the figure) of the second clamping plate 27 provided with the second rotating handle 25 is fixedly connected to the clamping end 19 .

[0057] The second screw is rotatably mounted in the second strip-shaped chute 34 via a second bearing 35. When the second screw is rotated by the second rotating handle 25, the second movable clamping arm 26 slides in the second strip-shaped chute 34 and is restrained by the second strip-shaped chute 34. Therefore, the second movable clamping arm 26 does not rotate with the second screw. Moreover, since the second movable clamping arm 26 is threadedly connected to the second screw, the second movable clamping arm 26 can only slide along the second strip-shaped chute 34. Since the second fixed clamping arm 28 is fixed to the second clamping plate 27 at the lower end of the second strip-shaped chute 34, the second movable clamping arm 26 can slide downwardly toward the second fixed clamping arm 28 or upwardly away from the second fixed clamping arm 28 along the second strip-shaped chute 34. This enables the second driving structure to drive the second movable clamping arm 26 to slide along the second clamping plate 27 toward or away from the second fixed clamping arm 28.

[0058] The operating device of the present invention, such as Figure 16 、 17 As shown, the first positioning groove 30 is a semi-cylindrical groove that passes through the first clamping plate 23, which matches the shape of the first positioning protrusion 3 of the first fixing plate 1 (the first positioning protrusion 3 is semi-cylindrical). The axial direction of the first positioning groove 30 is the same as the axial direction of the first screw 29 and the length direction of the first strip chute 31. All three are arranged vertically, and the first positioning groove 30 passes through the first clamping plate 23 vertically. There are two first positioning grooves 30, and the two first positioning grooves 30 are respectively arranged on opposite sides of the first strip chute 31. Figure 20 、 21 As shown, the second positioning groove 33 is a semi-cylindrical groove that penetrates the second clamping plate 27 and matches the shape of the second positioning protrusion 4 of the second fixing plate 2 (the second positioning protrusion 4 is semi-cylindrical). The axial direction of the second positioning groove 33 is the same as the axial direction of the second screw and the length direction of the second strip-shaped slide 34. All three are arranged vertically, and the second positioning groove 33 vertically penetrates the second clamping plate 27. There are two second positioning grooves 33, and the two second positioning grooves 33 are respectively located on opposite sides of the second strip-shaped slide 34.

[0059] Since the axial directions of the first positioning groove 30 and the first positioning protrusion 3 are both arranged vertically and their shapes match, the first positioning protrusion 3 can be placed in the first positioning groove 30. Similarly, since the axial directions of the second positioning groove 33 and the second positioning protrusion 4 are both arranged vertically and their shapes match, the second positioning protrusion 4 can be placed in the second positioning groove 33.

[0060] like Figure 23 As shown, combined with Figure 24 、 25As shown, the cervical spinous process fixation system in the present invention includes the above-mentioned cervical spinous process fixation device and the above-mentioned operating device, the first fixing plate 1 is clamped between the first movable clamping arm 22 and the first fixed clamping arm 24 of the first clamping plate 23, and the side of the first clamping plate 23 opposite to the second clamping plate 27 abuts on the side of the first fixing plate 1 away from the second fixing plate 2, that is, the side of the first clamping plate 23 provided with the first positioning groove 30, the first strip slide groove 31, the first movable clamping arm 22 and the first fixed clamping arm 24 abuts on the side of the first fixing plate 1 provided with the first positioning protrusion 3, and the first positioning protrusion 3 is located in the first positioning groove 30. The second fixed plate 2 is clamped between the second movable clamping arm 26 and the second fixed clamping arm 28 of the second clamping plate 27, and the side of the second clamping plate 27 opposite to the first clamping plate 23 abuts on the side of the second fixed plate 2 away from the first fixed plate 1, that is, the side of the second clamping plate 27 provided with the second positioning groove 33, the second strip slide groove 34, the second movable clamping arm 26 and the second fixed clamping arm 28 abuts on the side of the second fixed plate 2 provided with the second positioning protrusion 4, and the second positioning protrusion 4 is located in the second positioning groove 33.

[0061] The first movable clamping arm 22 of the first clamping plate 23 is clamped in the first clamping groove 7 at the upper long side end (i.e., the long side end that is inwardly curved and concave) of the first fixed plate 1. The first fixed clamping arm 24 of the first clamping plate 23 is clamped in the first clamping groove 7 at the lower long side end (i.e., the long side end that is outwardly curved and convex) of the first fixed plate 1. The second movable clamping arm 26 of the second clamping plate 27 is clamped in the second clamping groove 8 at the upper long side end (i.e., the long side end that is inwardly curved and concave) of the second fixed plate 2. The second fixed clamping arm 28 of the second clamping plate 27 is clamped in the second clamping groove 8 at the lower long side end (i.e., the long side end that is outwardly curved and convex) of the second fixed plate 2.

[0062] Through the mutual cooperation between the first positioning protrusion 3 and the first positioning groove 30, and the mutual cooperation between the second positioning protrusion 4 and the second positioning groove 33, the first fixing plate 1 and the second fixing plate 2 can be arranged relative to each other, and the two first through holes 10 on the first fixing plate 1 can be arranged in a one-to-one correspondence with the two second through holes 11 on the second fixing plate 2. Since each first through hole 10 is provided with a locking rod 6, the two locking rods 6 can be arranged in a one-to-one correspondence with the two second through holes 11. Through the clamping of the first fixing plate 1 by the first movable clamping arm 22 and the first fixed clamping arm 24, and the clamping of the second fixing plate 2 by the second movable clamping arm 26 and the second fixed clamping arm 28, the first fixing plate 1 and the second fixing plate 2 can be maintained in a relative arrangement.

[0063] The difference between the present invention and the prior art is that the present invention can fix the spinous processes 43 of the three adjacent vertebrae 39 of the cervical spine to each other. When in use, the two locking rods 6 are respectively inserted into the two first through holes 10 of the first fixing plate 1, and then the first fixing plate 1 is placed between the first fixed clamping arm 24 and the first movable clamping arm 22 of the first clamping plate 23, and the side surface of the first fixing plate 1 with the first positioning protrusion 3 is abutted against the side surface of the first clamping plate 23 with the first positioning groove 30, and the two first positioning protrusions 3 are respectively located in the two first positioning grooves 30. At this time, one end of the locking rod 6 is located in the first The first movable clamping arm 22 is in the through hole 10, and will not slip out of the first through hole 10 due to the obstruction of the first clamping plate 23. Then, the first movable clamping arm 22 is driven by the first driving structure to slide close to the first fixed clamping arm 24. Specifically, the first screw 29 is rotated by the first rotating handle 21 to allow the first movable clamping arm 22 to slide downward close to the first fixed clamping arm 24 until the first fixed plate 1 is clamped between the first movable clamping arm 22 and the first fixed clamping arm 24. At this time, the first movable clamping arm 22 is clamped in the first clamping groove 7 at the upper long side end of the first fixed plate 1, and the first fixed clamping arm 24 is clamped in the first clamping groove 7 at the lower long side end of the first fixed plate 1. Then place the second fixed plate 2 between the second fixed clamping arm 28 and the second movable clamping arm 26 of the second clamping plate 27, and let the side of the second fixed plate 2 with the second positioning protrusion 4 be against the side of the second clamping plate 27 with the second positioning groove 33, and let the two second positioning protrusions 4 be respectively located in the two second positioning grooves 33, and then drive the second movable clamping arm 26 to slide close to the second fixed clamping arm 28 through the second driving structure. Specifically, rotate the second screw through the second rotating handle 25 to allow the second movable clamping arm 26 to slide downward close to the second fixed clamping arm 28 until the second fixed plate 2 is clamped between the second movable clamping arm 26 and the second fixed clamping arm 28. At this time, the second movable clamping arm 26 is clamped in the second clamping groove 8 at the upper long side end of the second fixed plate 2, and the second fixed clamping arm 28 is clamped in the second clamping groove 8 at the lower long side end of the second fixed plate 2.

[0064] Next, for patients who need surgery, they need to lie on the operating table, expose the posterior cervical spine, that is, the spinous process 43 of the cervical spine faces upward, and then hold the grip ends 18 of the two operating rods 17, as shown in FIG. Figure 23 As shown, the holding end 18 is located at the top, the clamping end 19 is located at the bottom, and the end of the clamping plate with a rotating handle (the end is fixedly connected to the clamping end 19) is arranged upward. At this time, the end of the clamping plate with a rotating handle is the upper end, and the end without a rotating handle is the lower end. The movable clamping arm is located above the fixed clamping arm, so the upper long side end of the fixed plate clamped by the movable clamping arm and the fixed clamping arm is arranged upward, and the lower long side end is arranged downward (that is, arranged towards the cervical vertebrae).

[0065] Afterwards, the clamping end 19 of one operating rod 17 and the first clamping plate 23 and the first fixing plate 1 thereon are placed on the left side of the spinous process 43 of the cervical vertebra to be fixed, and the clamping end 19 of the other operating rod 17 and the second clamping plate 27 and the second fixing plate 2 thereon are placed on the right side of the spinous process 43 of the cervical vertebra to be fixed, and then the gripping ends 18 of the two operating rods 17 are moved closer to each other, so that the clamping ends 19 of the two operating rods 17 are also moved closer to each other. During this process, the two locking rods 6 are respectively passed through the gaps between the three vertebrae 39 (there are two gaps between the three vertebrae 39, and the two locking rods 6 are respectively passed through the two gaps), and the locking rods 6 are adjusted relative to each other. The first through hole 10 is offset in the axial direction (the axial direction of the hemispherical portion 12 and the truncated cone portion 13) so that the other ends of the two locking rods 6 are respectively inserted into the two second through holes 11 of the second fixing plate 2, and the two clamping ends 19 continue to move closer to each other until the spike 5 on the first fixing plate 1 penetrates the left side of the spinous process 43 and the spike 5 on the second fixing plate 2 penetrates the right side of the spinous process 43. The spike 5 can enhance the firmness of the fixation, and then the other ends of the two locking rods 6 are fixedly connected to the two second through holes 11 by the locking nail 9. In this way, the two fixing plates 1 and 2 fix the spinous processes 43 of the three adjacent cervical vertebrae 39 to each other. Figure 26 As shown, the arc-shaped structure of the first fixing plate 1 and the second fixing plate 2 (i.e., the upper long side of the fixing plate is arc-shaped and concave inward, and the lower long side is arc-shaped and convex outward) can match the natural direction of the spinous processes 43 of the three vertebrae 39. The first movable clamping arm 22 is then driven by the first driving structure to slide away from the first fixed clamping arm 24 and release the first fixed plate 1. Specifically, the first screw 29 is rotated by the first rotating handle 21 to allow the first movable clamping arm 22 to slide upward away from the first fixed clamping arm 24 and release the first fixed plate 1. The second movable clamping arm 26 is driven by the second driving structure to slide away from the second fixed arm and release the second fixed plate 2. Specifically, the second screw is rotated by the second rotating handle 25 to allow the second movable clamping arm 26 to slide upward away from the second fixed clamping arm 28 and release the second fixed plate 2. Then, the gripping ends 18 of the two operating rods 17 are moved away from each other. At the same time, the clamping ends 19 of the two operating rods 17 are also moved away from each other. As a result, the two clamping ends 19 drive the first clamping plate 23 and the second clamping plate 27 to also move away from each other, that is, the first clamping plate 23 is separated from the first fixed plate 1, and the second clamping plate 27 is separated from the second fixed plate 2. Finally, the operating device can be withdrawn. It can be seen that the present invention can mutually fix the spinous processes 43 of three adjacent vertebral bodies 39 of the cervical spine. Figure 26As shown, this embodiment fixes the spinous process 40 of the fourth vertebra 36, the spinous process 41 of the fifth vertebra 37 and the spinous process 42 of the sixth vertebra 38 of the cervical spine, the first fixing plate 1 is fixed to the left side of the spinous process 43 of the above-mentioned vertebra 39, the second fixing plate 2 is fixed to the right side of the spinous process 43 of the above-mentioned vertebra 39, and a locking rod 6 passes through the gap between the fourth vertebra 36 and the fifth vertebra 37, and the other locking rod 6 passes through the gap between the fifth vertebra 37 and the sixth vertebra 38.

[0066] As described above, the movable clamping arm is located above the fixed clamping arm, that is, the fixed clamping arm is arranged closer to the cervical vertebra than the movable clamping arm. In order to prevent the lower ends of the first clamping plate 23 and the second clamping plate 27 from contacting the cervical vertebra to generate resistance and hinder the two fixing plates 1 and 2 from being fixed on the spinous process 43 or the two clamping plates 23 and 27 from being separated from the two fixing plates 1 and 2 respectively, the first fixed clamping arm 24 and the second fixed clamping arm 28 are fixed to the lower ends of the first clamping plate 23 and the second clamping plate 27 respectively, and both are extended downward for a distance. In this way, the first fixed clamping arm 24 is lower than the lower end of the first clamping plate 23, and the second fixed clamping arm 28 is lower than the lower end of the second clamping plate 27. Figure 17 、 21 As shown. Figure 24 、 25As shown, since the first fixed clamping arm 24 and the second fixed clamping arm 28 are respectively lower than the lower ends of the first clamping plate 23 and the second clamping plate 27, the first fixed plate 1 is clamped between the first movable clamping arm 22 and the first fixed clamping arm 24. Similarly, after the second fixed plate 2 is clamped between the second movable clamping arm 26 and the second fixed clamping arm 28, the lower long side end of the second fixed plate 2 is also lower than the lower end of the second clamping plate 27. In this way, when the two fixed plates 1 and 2 are fixed on the spinous process 43, the lower long sides of the first fixed plate 1 and the second fixed plate 2 will contact the cervical vertebra, while the lower ends of the first clamping plate 23 and the second clamping plate 27 will not contact the cervical vertebra. Therefore, the lower ends of the two clamping plates 23 and 27 will not generate resistance due to contact with the cervical vertebra, which will hinder the two fixed plates 1 and 2 from being fixed on the spinous process 43 or the two clamping plates 23 and 27 from being separated from the two fixed plates 1 and 2 respectively. Since the first fixing clamp arm 24 is located in the first clamping groove 7 at the lower long side end of the first fixing plate 1, and the second fixing clamp arm 28 is located in the second clamping groove 8 at the lower long side end of the second fixing plate 2, when the first fixing plate 1 and the second fixing plate 2 are fixed on the spinous process 43, or when the first clamping plate 23 and the second clamping plate 27 are separated from the first fixing plate 1 and the second fixing plate 2 respectively, the lower long sides of the first fixing plate 1 and the second fixing plate 2 will contact the cervical vertebrae, and the first fixing clamp arm 24 and the second fixing clamp arm 28 will not contact the cervical vertebrae to generate resistance and hinder the fixing of the two fixing plates 1 and 2 on the spinous process 43 or the separation of the two clamping plates 23 and 27 from the two fixing plates 1 and 2 respectively. For the first clamping plate 23, its lower end and the first fixing clamping arm 24 provided thereon are the parts closest to the cervical vertebrae. If the lower end and the first fixing clamping arm 24 provided thereon do not contact the cervical vertebrae, then other parts of the first clamping plate 23 will not contact the cervical vertebrae either. Similarly, for the second clamping plate 27, its lower end and the second fixing clamping arm 28 provided thereon are the parts closest to the cervical vertebrae. If the lower end and the second fixing clamping arm 28 provided thereon do not contact the cervical vertebrae, then other parts of the second clamping plate 27 will not contact the cervical vertebrae either. In summary, when the two clamping plates 23 and 27 are fixed to the spinous processes 43 to fix them, or when the two clamping plates 23 and 27 are separated from the two fixing plates 1 and 2 after the spinous processes 43 are fixed, the two clamping plates 23 and 27 can avoid contact with the cervical vertebrae, generating resistance and thus hindering the relevant surgical operation.

[0067] It should be noted that the directions or positional relationships indicated by terms such as "center", "up", "down", "front", "back", "left", "right", and "middle" are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0068] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0069] The embodiments described above are merely descriptions of preferred implementations of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A cervical spinous process fixation device, characterized in that: The lock assembly comprises a first fixing plate and a second fixing plate arranged opposite to each other, the first fixing plate and the second fixing plate are both strip plates, two first through holes are arranged at intervals along the length direction on the first fixing plate, and two second through holes are arranged at intervals along the length direction on the second fixing plate, the two first through holes are arranged one-to-one with the two second through holes, a locking rod is inserted between the first through hole and the corresponding second through hole, one end of the locking rod is clamped in the first through hole, and the other end of the locking rod is connected to the second through hole by a locking nail, pointed protrusions are provided on the two opposite sides of the first fixing plate and the second fixing plate, a first positioning protrusion is provided on the side of the first fixing plate away from the second fixing plate, and a second positioning protrusion is provided on the side of the second fixing plate away from the first fixing plate.

2. The cervical spinous process fixation device according to claim 1, characterized in that: The first through hole includes a hemispherical portion and a frustum portion that are interconnected, and the hemispherical portion and the frustum portion are arranged in sequence along the direction from the first fixed plate to the second fixed plate. The hemispherical portion and the frustum portion are coaxially arranged, and the aperture of the hemispherical portion gradually increases along the direction from the second fixed plate to the first fixed plate, and the aperture of the frustum portion gradually increases along the direction from the first fixed plate to the second fixed plate. The locking rod includes a head and a rod portion that are connected to each other, and the head is spherical and matches the hemispherical portion of the first through hole. The aperture of the hemispherical portion and the frustum portion is smaller than the outer diameter of the locking rod head and larger than the outer diameter of the rod portion. The rod portion of the locking rod passes through the hemispherical portion and the frustum portion of the first through hole in sequence and is inserted into the second through hole. The head of the locking rod is clamped in the hemispherical portion of the first through hole.

3. The cervical spinous process fixation device according to claim 2, characterized in that: There are two first positioning protrusions, and the two first positioning protrusions are both semi-cylindrical. The axial directions of the two first positioning protrusions are both arranged along the width direction of the first fixing plate. The two first positioning protrusions are respectively arranged in one-to-one correspondence with the two first through holes, and the two first through holes respectively penetrate the corresponding first positioning protrusions. There are two second positioning protrusions, and the two second positioning protrusions are both semi-cylindrical. The axial directions of the two second positioning protrusions are both arranged along the width direction of the second fixing plate. The two second positioning protrusions are respectively arranged in one-to-one correspondence with the two second through holes, and the two second through holes respectively penetrate the corresponding second positioning protrusions.

4. The cervical spinous process fixation device according to claim 3, characterized in that: The two second positioning protrusions of the second fixing plate are both provided with threaded holes, which are arranged along the axial direction of the second positioning protrusion and connected to the second through hole passing through the second positioning protrusion. Locking pins are threadedly connected in the threaded holes, and the locking pins in the two threaded holes are respectively in contact with the locking rod parts in the two second through holes.

5. The cervical spinous process fixation device according to claim 4, characterized in that: Both long side ends of the first fixing plate are provided with a first clamping groove, and both long side ends of the second fixing plate are provided with a second clamping groove.

6. An operating device, characterized in that: The two operating rods are hinged to each other, and the hinge parts of the two operating rods are located between the two ends of the two operating rods. The two operating rods are arranged in an X shape. One end of the two operating rods is a clamping end, and the other end of the two operating rods is a gripping end. The two clamping ends are connected to a clamping plate, and the two clamping plates are respectively a first clamping plate and a second clamping plate. The first clamping plate and the second clamping plate are arranged opposite to each other. A first positioning groove is provided on the side of the first clamping plate opposite to the second clamping plate, and a second positioning groove is provided on the side of the second clamping plate opposite to the first clamping plate. A first fixed clamping arm and a first movable clamping arm are provided on the side of the first clamping plate opposite to the second clamping plate. The movable clamping arm, the first fixed clamping arm is fixedly provided on the first clamping plate, the first movable clamping arm is slidably provided on the first clamping plate, a first driving structure is provided on the first clamping plate, the first driving structure can drive the first movable clamping arm to slide along the first clamping plate towards or away from the first fixed clamping arm, a second fixed clamping arm and a second movable clamping arm are provided on the side of the second clamping plate opposite to the first clamping plate, the second fixed clamping arm is fixedly provided on the second clamping plate, the second movable clamping arm is slidably provided on the second clamping plate, a second driving structure is provided on the second clamping plate, the second driving structure can drive the second movable clamping arm to slide along the second clamping plate towards or away from the second fixed clamping arm.

7. The operating device according to claim 6, characterized in that: The first clamping plate is provided with a first strip slide groove on the side opposite to the second clamping plate, and the first movable clamping arm is slidably arranged in the first strip slide groove, and the first driving structure includes a first screw, and the first screw is rotatably installed in the first strip slide groove, and the axial direction of the first screw is the same as the length direction of the first strip slide groove, and the first movable clamping arm is threadedly connected to the first screw, and the first fixed clamping arm is fixedly arranged on the first clamping plate at one end of the first strip slide groove, and the end of the first screw away from the first fixed clamping arm extends to the outside of the first clamping plate and is connected to the first rotating handle, and the first clamping plate is provided with an end of the first rotating handle connected to the clamping end.

8. The operating device according to claim 7, characterized in that: The second fixing mechanism is installed in the fixing mechanism, and the fixing mechanism has the advantages of small size and large size, and the fixing mechanism can be easily installed in the fixing mechanism, and the fixing mechanism can be easily installed in the fixing mechanism.

9. The operating device according to claim 8, characterized in that: The first positioning groove is a semi-cylindrical groove passing through the first clamping plate, and the axial direction of the first positioning groove is the same as the axial direction of the first screw and the length direction of the first strip slide. There are two first positioning grooves, and the two first positioning grooves are respectively arranged on opposite sides of the first strip slide. The second positioning groove is a semi-cylindrical groove passing through the second clamping plate, and the axial direction of the second positioning groove is the same as the axial direction of the second screw and the length direction of the second strip slide. There are two second positioning grooves, and the two second positioning grooves are respectively arranged on opposite sides of the second strip slide.

10. A cervical spinous process fixation system, characterized in that: It includes the cervical spinous process fixation device described in any one of claims 1 to 5 and the operating device described in any one of claims 6 to 9, the first fixing plate is clamped between the first movable clamping arm and the first fixed clamping arm of the first clamping plate, the side of the first clamping plate opposite to the second clamping plate abuts on the side of the first fixing plate away from the second fixing plate, the first positioning protrusion is located in the first positioning groove, the second fixing plate is clamped between the second movable clamping arm and the second fixed clamping arm of the second clamping plate, the side of the second clamping plate opposite to the first clamping plate abuts on the side of the second fixing plate away from the first fixing plate, and the second positioning protrusion is located in the second positioning groove.

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