Thoracolumbar intervertebral disc dissector for total thoracolumbar vertebra resection

Abstract

The present application belongs to the technical field of medical apparatus and discloses a thoracolumbar disc disarticulator special for thoracolumbar vertebral body total resection, which comprises a handle, the outer surface of the handle is fixedly sleeved with an anti-skid ring, the middle part of the bottom end of the handle is fixedly installed with an extension plate, and the rear side of the inner middle end of the extension plate is fixedly sleeved with a limiting rod. The limiting rod, the first gear, the toothed plate, the inclined rod and the movable block are arranged, when the hexagonal handle is rotated, the threaded rod is rotated, since the outer surface of the threaded rod and the inner surface of the movable block are threadedly sleeved, with the rotation of the threaded rod, the movable block moves with one end of the inclined rod, so that the other end of the inclined rod generates a pushing force on the rectangular block, the rectangular block moves with the two toothed plates in opposite directions, so that the toothed plate and the first gear are separated, and then the first gear is pushed to adjust the position of the first gear and is fixed by the toothed plate after the adjustment.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of medical devices, and specifically relates to a thoracolumbar disc dissector special for thoracolumbar vertebra total resection. BACKGROUND

[0002] Thoracolumbar vertebra refers to the collective term of thoracic vertebra and lumbar vertebra, both of which are important components of the human spine, and have different structural and functional characteristics. Thoracolumbar vertebra collectively supports the upper body of the human body, enabling the human body to maintain a normal standing and walking posture. Thoracic vertebra is connected with the ribs to form the thoracic cage, which protects the organs in the thoracic cavity such as the heart and lungs. Lumbar vertebra protects important structures such as spinal cord and nerve roots.

[0003] During the thoracolumbar vertebra total resection surgery, in order to improve the efficiency of the surgery, a corresponding thoracolumbar disc dissector needs to be used to assist in the dissection operation. However, the existing thoracolumbar disc dissector has a fixed structure design between the blade and the handle in the actual use process, so that the relative position between the blade and the handle is not adjustable, and the length of the dissector is fixed. Due to the particularity of the surgical site, the fixed structure design limits the depth of the blade into the human body during the surgery, thereby limiting the application range of the thoracolumbar disc dissector. Moreover, the handle may block the line of sight, which brings inconvenience to the surgery. Therefore, it is necessary to improve it. SUMMARY

[0004] The present application aims to provide a thoracolumbar disc dissector special for thoracolumbar vertebra total resection to solve the problems raised in the background.

[0005] In order to achieve the above object, the present application provides the following technical scheme: The thoracolumbar disc dissector special for thoracolumbar vertebra body total cutting includes a handle, the outer surface of the handle is fixedly sleeved with an anti-skid ring, the middle part of the bottom end of the handle is fixedly installed with an extension plate, the rear side of the inner middle end of the extension plate is fixedly sleeved with a limiting rod, the top of the outer surface of the limiting rod is movably sleeved with a first gear, the inner surfaces of the left and right ends of the extension plate are movably sleeved with toothed plates respectively, the number of the toothed plates is two, the tops of the opposite sides of the two toothed plates are movably connected with the left and right sides of the outer surface of the first gear respectively, the tops of the two toothed plates are fixedly installed with rectangular blocks respectively, the outer surface of the rectangular block and the inner surface of the top end of the extension plate are movably sleeved, the inner part of the rectangular block is movably sleeved with a round rod, the outer surface of the round rod and the inner surface of the top end of the extension plate are fixedly sleeved, the top end of the rectangular block is hingedly connected with an inclined rod, the other end of the inclined rod is hingedly connected with a movable block, the outer surface of the movable block and the inner surface of the bottom end of the handle are movably sleeved, the inner part of the movable block is threadedly sleeved with a threaded rod, the outer surface of the threaded rod and the inner surface of the middle end of the handle are movably sleeved, the top of the outer surface of the threaded rod is fixedly sleeved with a hexagonal handle, and the outer surface of the hexagonal handle and the inner surface of the handle are movably sleeved.

[0006] As preferred in the present application, the outer surface of the first gear is fixedly installed with a fixed plate located outside the extension plate, and the inner part of the middle end of the fixed plate is movably sleeved with a round shaft.

[0007] As preferred in the present application, the left side of the outer surface of the round shaft is fixedly sleeved with a tool shank, the outer surface of the tool shank and the outer surface of the fixed plate are movably connected, the right side of the outer surface of the round shaft is fixedly sleeved with a second gear, and the outer surface of the second gear and the inner surface of the fixed plate are movably sleeved.

[0008] As preferred in the present application, the right side of the outer surface of the second gear is movably connected with a long rod, the right end of the long rod penetrates through the fixed plate and extends to the outside of the fixed plate, the inner part of the right end of the long rod is fixedly sleeved with a short rod, the outer surface of the short rod is movably sleeved with a rotating frame, the outer surface of the rotating frame and the outer surface of the fixed plate are movably connected, and the right side of the top end of the rotating frame is fixedly installed with a push piece.

[0009] As preferred in the present application, the right end of the inner part of the long rod is movably sleeved with a fixed block, the right end of the fixed block and the right side inner wall of the fixed plate are fixedly connected, the left end of the fixed block is fixedly installed with a first spring, and the other end of the first spring is fixedly installed on the left side inner wall of the long rod.

[0010] As preferred in the present application, the bottom end of the tool shank is fixedly installed with a blade, and the inner part of the right end of the blade is fixedly sleeved with a visible lens.

[0011] As preferred of the present application, the right side of the blade tip is fixedly provided with a clamping plate, the outer surface of the clamping plate is movably sleeved with the inner surface of the bottom end of the handle, the left end of the clamping plate is fixedly provided with a connecting rod, and the outer surface of the connecting rod is movably sleeved with the inner surface of the bottom of the left end of the handle.

[0012] As preferred of the present application, the inside of the connecting rod is provided with a rectangular slot, the inside of the rectangular slot is movably sleeved with a clamping block, and the right end of the clamping block is movably connected with the left end of the handle.

[0013] As preferred of the present application, the rear end of the inside of the clamping block is movably sleeved with a T-shaped block, the right end of the T-shaped block is fixedly connected with the left end of the handle, the front end of the T-shaped block is fixedly provided with a second spring, and the other end of the second spring is fixedly connected with the inner surface of the clamping block.

[0014] The present application has the following advantages:

[0015] 1、The present application is provided with a limiting rod, a first gear, a toothed plate, an inclined rod and a movable block, when the hexagonal handle is rotated, the threaded rod is rotated, since the outer surface of the threaded rod is threadedly sleeved with the inner surface of the movable block, with the rotation of the threaded rod, the movable block moves with one end of the inclined rod, so that the other end of the inclined rod pushes the rectangular block, the rectangular block moves with the two toothed plates, so that the toothed plates and the first gear are separated, then the first gear is pushed to adjust the position of the first gear, and after the adjustment, the toothed plates are used to fix the first gear, so that the length of the disconnector can be adjusted.

[0016] 2、The present application is provided with a circular shaft, a second gear, a long rod, a rotating frame and a first spring, when the tab is pushed, the rotating frame rotates around the short rod, since the short rod is movably sleeved in the inside of the rotating frame, with the rotation of the rotating frame, the short rod moves with the long rod and compresses the first spring, when the rotating frame rotates by 90 degrees, the long rod is released from the fixing of the second gear, when the handle is rotated, the handle rotates with the second gear and the blade around the circular shaft, so that the angle and direction of the blade are adjusted, which is convenient for cutting the intervertebral disc.

[0017] 3、The present application is provided with a connecting rod, a rectangular slot, a clamping block, a T-shaped block and a second spring, when the clamping block is pulled, the clamping block moves along the outer surface of the T-shaped block and compresses the second spring, so that the clamping block and the rectangular slot are separated, when the blade is pulled out, the blade moves with the clamping plate and the connecting rod along the inner surface of the bottom end of the handle, so that the blade and the handle can be quickly disassembled, which improves the convenience of the use of the thoracolumbar intervertebral disc disconnector. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1Structure schematic view of the present application;

[0019] Figure 2 Structure schematic view of the present application;

[0020] Figure 3 Structure schematic view of the present application;

[0021] Figure 4 Structure schematic view of the present application;

[0022] Figure 5 Structure schematic view of the present application; Figure 1 Structure schematic view of the present application; Structure schematic view of the present application;

[0023] Structure schematic view of the present application; Figure 6 Structure schematic view of the present application; Figure 2 Structure schematic view of the present application; Structure schematic view of the present application;

[0024] Structure schematic view of the present application; Figure 7 Structure schematic view of the present application; Figure 3 Structure schematic view of the present application; Structure schematic view of the present application;

[0025] Structure schematic view of the present application; Figure 8 Structure schematic view of the present application; Figure 4 Structure schematic view of the present application; Structure schematic view of the present application;

[0026] Structure schematic view of the present application; Figure 9 Structure schematic view of the present application; Figure 4 Structure schematic view of the present application.

[0027] In the figure: 1, handle; 2, anti-skid ring; 3, extension plate; 4, limiting rod; 5, first gear; 6, toothed plate; 7, rectangular block; 8, round rod; 9, inclined rod; 10, movable block; 11, threaded rod; 12, hexagonal handle; 13, fixed plate; 14, round shaft; 15, knife handle; 16, second gear; 17, long rod; 18, short rod; 19, rotating frame; 20, push piece; 21, fixed block; 22, first spring; 23, knife piece; 24, visual lens; 25, clamping plate; 26, connecting rod; 27, rectangular groove; 28, clamping block; 29, T-shaped block; 30, second spring. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0029] As Figures 1 to 9As shown, the thoracolumbar disc dissector for thoracolumbar vertebral body total resection provided by the embodiment of the present application comprises a handle 1, the outer surface of the handle 1 is fixedly sleeved with an anti-skid ring 2, the middle part of the bottom end of the handle 1 is fixedly installed with an extension plate 3, the rear side of the inner part of the middle end of the extension plate 3 is fixedly sleeved with a limiting rod 4, the top part of the outer surface of the limiting rod 4 is movably sleeved with a first gear 5, the inner surfaces of the left and right ends of the extension plate 3 are movably sleeved with toothed plates 6 respectively, the number of the toothed plates 6 is two, the top parts of the opposite sides of the two toothed plates 6 are movably connected with the left and right sides of the outer surface of the first gear 5 respectively, the top ends of the two toothed plates 6 are fixedly installed with rectangular blocks 7 respectively, the outer surface of the rectangular block 7 is movably sleeved with the inner surface of the top end of the extension plate 3, the inner part of the rectangular block 7 is movably sleeved with a round rod 8, the outer surface of the round rod 8 is fixedly sleeved with the inner surface of the top end of the extension plate 3, the top end of the rectangular block 7 is hingedly connected with an inclined rod 9, the other end of the inclined rod 9 is hingedly connected with a movable block 10, the outer surface of the movable block 10 is movably sleeved with the inner surface of the bottom end of the handle 1, the inner part of the movable block 10 is threadedly sleeved with a threaded rod 11, the outer surface of the threaded rod 11 is movably sleeved with the inner surface of the middle end of the handle 1, the top part of the outer surface of the threaded rod 11 is fixedly sleeved with a hexagonal handle 12, the outer surface of the hexagonal handle 12 is movably sleeved with the inner surface of the handle 1.

[0030] Due to the existence of the anti-skid ring 2, the holding of the handle 1 will be facilitated, when the hexagonal handle 12 is rotated, the threaded rod 11 will be rotated, so that the movable block 10 which is threadedly sleeved with the threaded rod 11 will move along the inner surface of the bottom end of the handle 1 with the inclined rod 9, and then a pushing force will be generated on the other end of the inclined rod 9 to the rectangular block 7, so that the rectangular block 7 will move along the outer surface of the round rod 8 with the two toothed plates 6 in opposite directions, so that the locking of the toothed plates 6 to the first gear 5 can be released, when the position of the first gear 5 is adjusted, the hexagonal handle 12 is rotated again, the toothed plates 6 are reset, and then the position of the first gear 5 can be locked by means of the toothed plates 6, so that the adjustment of the position of the first gear 5 and the fixation after the adjustment can be realized, so that the adjustment of the length of the dissector can be realized.

[0031] The outer surface of the first gear 5 is fixedly installed with a fixed plate 13 which is located outside the extension plate 3, the inner part of the middle end of the fixed plate 13 is movably sleeved with a round shaft 14.

[0032] The inner surface of the fixed plate 13 and the outer surface of the round shaft 14 are smooth, so that the rotation of the round shaft 14 along the inner part of the middle end of the fixed plate 13 will not be stuck.

[0033] The left side of the outer surface of the round shaft 14 is fixedly sleeved with a tool shank 15, the outer surface of the tool shank 15 is movably connected with the outer surface of the fixed plate 13, the right side of the outer surface of the round shaft 14 is fixedly sleeved with a second gear 16, the outer surface of the second gear 16 is movably sleeved with the inner surface of the fixed plate 13.

[0034] When rotating the handle 15, the handle 15 will rotate the second gear 16 through the round shaft 14.

[0035] The outer surface of the second gear 16 is movably connected with a long rod 17, the right end of the long rod 17 extends to the outside of the fixed plate 13 through the fixed plate 13, the inside of the right end of the long rod 17 is fixedly sleeved with a short rod 18, the outer surface of the short rod 18 is movably sleeved with a rotating frame 19, the outer surface of the rotating frame 19 is movably connected with the outer surface of the fixed plate 13, the right side of the top end of the rotating frame 19 is fixedly installed with a push piece 20.

[0036] When the push piece 20 is pushed, the rotating frame 19 will rotate around the short rod 18, so that the long rod 17 is driven by the short rod 18 to move towards the rotating frame 19, so that the long rod 17 can be unlocked from the rotating position of the second gear 16.

[0037] The right end of the inside of the long rod 17 is movably sleeved with a fixed block 21, the right end of the fixed block 21 is fixedly connected with the right side inner wall of the fixed plate 13, the left end of the fixed block 21 is fixedly installed with a first spring 22, the other end of the first spring 22 is fixedly installed on the left side inner wall of the long rod 17.

[0038] When the long rod 17 moves along the outer surface of the fixed block 21, the first spring 22 will be compressed, and under the restoring action of the first spring 22, the long rod 17 will be forced to return to its original position.

[0039] The bottom end of the handle 15 is fixedly installed with a blade 23, the inside of the right end of the blade 23 is fixedly sleeved with a visible lens 24.

[0040] The right end of the blade 23 is blunt and has an inclined surface, so as to separate the paraspinal tissue and the ventral large blood vessels, and the existence of the visible lens 24 can see the ventral large blood vessels of the vertebral body, so as to avoid injuring the large blood vessels.

[0041] The right side of the top end of the blade 23 is fixedly installed with a clamping plate 25, the outer surface of the clamping plate 25 is movably sleeved with the inner surface of the bottom end of the handle 15, the left end of the clamping plate 25 is fixedly installed with a connecting rod 26, the outer surface of the connecting rod 26 is movably sleeved with the inner surface of the left end bottom of the handle 15.

[0042] Due to the existence of the clamping plate 25 and the connecting rod 26, the connection between the blade 23 and the handle 15 will be positioned.

[0043] The inside of the connecting rod 26 is provided with a rectangular slot 27, the inside of the rectangular slot 27 is movably sleeved with a clamping block 28, the right end of the clamping block 28 is movably connected with the left end of the handle 15.

[0044] The front side of the bottom end of the clamping block 28 is a slope, and the rectangular groove 27 and the clamping block 28 are matched to lock the position of the connecting rod 26.

[0045] The rear end of the clamping block 28 is movably sleeved with a T-shaped block 29, the right end of the T-shaped block 29 is fixedly connected with the left end of the handle 15, and the front end of the T-shaped block 29 is fixedly installed with a second spring 30, and the other end of the second spring 30 is fixedly connected with the inner surface of the clamping block 28.

[0046] The T-shaped block 29 limits the movement of the clamping block 28, and the second spring 30 enables the clamping block 28 to move along the outer surface of the T-shaped block 29 and return to the original position.

[0047] Working principle and use process:

[0048] Firstly, when the length of the thoracolumbar disc disjunctor is too short, the operator rotates the hexagonal handle 12, so that the threaded rod 11 rotates, thereby the movable block 10 sleeved with the threaded rod 11 moves along the inner surface of the bottom end of the handle 1, and the other end of the inclined rod 9 pushes the rectangular block 7, thereby the two toothed plates 6 move away from each other along the outer surface of the round rod 8 until the toothed plates 6 and the first gear 5 are completely separated, then the operator pushes the handle 15, so that the handle 15 moves along the outer surface of the limiting rod 4 through the fixed plate 13 until the handle 15 moves to the appropriate position, then the operator reverses the hexagonal handle 12, so that the toothed plates 6 return to the original position to lock the position of the first gear 5, so as to adjust the position of the handle 15 and the blade 23 and fix the position after adjustment, thereby adjusting the length of the disjunctor.

[0049] When the angle of the blade 23 needs to be adjusted, the operator pushes the push piece 20, so that the rotating frame 19 rotates around the short rod 18 as the axis, at this time, with the rotation of the rotating frame 19, the short rod 18 moves along with the long rod 17 towards the rotating frame 19 and compresses the first spring 22, when the rotating frame 19 rotates by ninety degrees, the long rod 17 will be separated from the second gear 16, then the operator pushes the blade 23, so that the blade 23 rotates around the circular shaft 14 as the axis along with the circular shaft 14, the handle 15 and the second gear 16 until the blade 23 rotates to the appropriate angle, at this time, the operator pushes the push piece 20 again, so that the rotating frame 19 returns to the original position, and under the restoring action of the first spring 22, the long rod 17 re-embeds into the tooth groove in the outer surface of the second gear 16, thereby locking the rotating position of the second gear 16, the handle 15 and the blade 23, so as to adjust the angle and direction of the blade 23, thereby facilitating the cutting of the disc.

[0050] When the blade 23 needs to be disassembled, the operator pulls the clamping block 28, so that the clamping block 28 moves along the outer surface of the T-shaped block 29 and compresses the second spring 30, thereby separating the clamping block 28 from the rectangular slot 27 and releasing the locking of the connecting rod 26 by the clamping block 28, and then the operator pulls the blade 23, so that the blade 23 is separated from the inner part of the handle 15 together with the clamping plate 25 and the connecting rod 26, thereby realizing the quick disassembly of the blade 23. When the blade 23 is installed, since the right side of the bottom end of the clamping block 28 is a slope, the operator only needs to align the clamping plate 25 and the connecting rod 26 with the inner surface of the bottom end of the handle 15 and push the connecting rod 26 towards the handle 15, so that the connecting rod 26 extrudes the slope of the clamping block 28, thereby moving the clamping block 28 and compressing the second spring 30. Under the restoring action of the second spring 30, when the clamping block 28 is aligned with the rectangular slot 27, the clamping block 28 will return to the original position and be embedded in the rectangular slot 27, so that the connection and installation between the blade 23 and the handle 15 are completed, thereby improving the convenience of using the thoracolumbar disc disarticulator.

[0051] It should be noted that the relative terms such as first and second, etc. are used herein only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0052] Although the embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A thoracolumbar intervertebral disc transection device specifically for total thoracolumbar vertebral body resection, including a handle (1), characterized in that: An anti-slip ring (2) is fixedly sleeved on the outer surface of the grip (1). An extension plate (3) is fixedly installed at the middle of the bottom end of the grip (1). A limit rod (4) is fixedly sleeved on the rear side of the middle of the inner end of the extension plate (3). A first gear (5) is movably sleeved on the top of the outer surface of the limit rod (4). Toothed plates (6) are movably sleeved on the inner surfaces of the left and right ends of the extension plate (3). There are two toothed plates (6). The tops of the opposite sides of the two toothed plates (6) are respectively meshed with the left and right sides of the outer surface of the first gear (5). A rectangular block (7) is fixedly installed on the top of the two toothed plates (6). The outer surface of the rectangular block (7) and the inner surface of the top of the extension plate (3) are movably sleeved. The rectangular block (7) is movably fitted with a round rod (8), the outer surface of the round rod (8) is fixedly fitted with the inner surface of the top of the extension plate (3), the top of the rectangular block (7) is hinged with a diagonal rod (9), the other end of the diagonal rod (9) is hinged with a movable block (10), the outer surface of the movable block (10) is movably fitted with the inner surface of the bottom end of the handle (1), the movable block (10) is threaded with a threaded rod (11), the outer surface of the threaded rod (11) is movably fitted with the inner surface of the middle end of the handle (1), the top of the outer surface of the threaded rod (11) is fixedly fitted with a hexagonal handle (12), the outer surface of the hexagonal handle (12) is movably fitted with the inner surface of the handle (1); A fixing plate (13) located outside the extension plate (3) is fixedly installed on the outer surface of the first gear (5), and a round shaft (14) is movably sleeved inside the middle end of the fixing plate (13). A tool holder (15) is fixedly sleeved on the left side of the outer surface of the round shaft (14), and the outer surface of the tool holder (15) is movably connected to the outer surface of the fixing plate (13). A second gear (16) is fixedly sleeved on the right side of the outer surface of the round shaft (14), and the outer surface of the second gear (16) is movably sleeved to the inner surface of the fixing plate (13). The blade (23) is fixedly installed at the bottom of the handle (15), and a viewing lens (24) is fixedly sleeved inside the right end of the blade (23).

2. The thoracolumbar intervertebral disc transection device for total thoracolumbar vertebral body resection according to claim 1, characterized in that: A long rod (17) is movably connected to the right side of the outer surface of the second gear (16). The right end of the long rod (17) passes through the fixed plate (13) and extends to the outside of the fixed plate (13). A short rod (18) is fixedly sleeved inside the right end of the long rod (17). A rotating frame (19) is movably sleeved on the outer surface of the short rod (18). The outer surface of the rotating frame (19) is movably connected to the outer surface of the fixed plate (13). A paddle (20) is fixedly installed on the right side of the top of the rotating frame (19).

3. The thoracolumbar intervertebral disc transection device for total thoracolumbar vertebral body resection according to claim 2, characterized in that: A fixing block (21) is movably sleeved on the right end of the long rod (17). The right end of the fixing block (21) is fixedly connected to the right inner wall of the fixing plate (13). A first spring (22) is fixedly installed on the left end of the fixing block (21). The other end of the first spring (22) is fixedly installed on the left inner wall of the long rod (17).

4. The thoracolumbar intervertebral disc transection device for total thoracolumbar vertebral body resection according to claim 1, characterized in that: A clamping plate (25) is fixedly installed on the right side of the top of the blade (23). The outer surface of the clamping plate (25) is movably connected to the inner surface of the bottom of the handle (15). A connecting rod (26) is fixedly installed on the left end of the clamping plate (25). The outer surface of the connecting rod (26) is movably connected to the inner surface of the bottom left end of the handle (15).

5. The thoracolumbar intervertebral disc transection device for total thoracolumbar vertebral body resection according to claim 4, characterized in that: The connecting rod (26) has a rectangular groove (27) inside, and a locking block (28) is movably fitted inside the rectangular groove (27). The right end of the locking block (28) is movably connected to the left end of the handle (15).

6. The thoracolumbar intervertebral disc transection device for total thoracolumbar vertebral body resection according to claim 5, characterized in that: The rear end of the card block (28) is movably sleeved with a T-shaped block (29). The right end of the T-shaped block (29) is fixedly connected to the left end of the knife handle (15). The front end of the T-shaped block (29) is fixedly installed with a second spring (30). The other end of the second spring (30) is fixedly connected to the inner surface of the card block (28).

Images