CN218943486U - Reduction instrument for spinal surgery - Google Patents
Reduction instrument for spinal surgery Download PDFInfo
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- CN218943486U CN218943486U CN202223363322.1U CN202223363322U CN218943486U CN 218943486 U CN218943486 U CN 218943486U CN 202223363322 U CN202223363322 U CN 202223363322U CN 218943486 U CN218943486 U CN 218943486U
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Abstract
The utility model relates to the field of medical equipment, and discloses a resetting device for spinal surgery, which comprises a first telescopic adjusting piece and a second telescopic adjusting piece, wherein a first adjusting rod is movably arranged on the second telescopic assembly, and the first adjusting rod is axially fixed on the second telescopic assembly; the outer wall of the first fixing component is provided with a positioning rod, the outer wall of the positioning rod is movably sleeved with a second adjusting rod, and the first adjusting rod and the second adjusting rod are arranged in parallel and are positioned on the same side of the first fixing component; the ends of the first adjusting rod and the second adjusting rod on the same side are respectively provided with external threads matched with the internal threads of the nuts of the pedicle screws. According to the utility model, after the first adjusting rod, the second adjusting rod and pedicle screws on two vertebrae are fixed, the distance between the first adjusting rod and the second adjusting rod is controlled by controlling the telescopic length of the first adjusting rod, so that the distance between the dislocated vertebrae and the normal vertebrae can be adjusted, the front and back position adjustment of the dislocated vertebrae can be realized, and the dislocated vertebrae can be ensured to be reset to physiological positions.
Description
Technical Field
The utility model relates to the field of medical equipment, in particular to a reduction instrument for spinal surgery.
Background
In spinal surgery, the deformity is corrected by implanting pedicle screws or hooks to support bone or other tissue, holding the tissue in place. Pedicle screws are surgically secured to the vertebrae and connected with connecting members (bone anchor plates/rods) to support or hold the segments in place.
Usually, before fixing a bone fixing sheet and pedicle screws, a reduction device is needed to reduce the dislocation or abnormal bending spine segment in advance; however, the existing resetting apparatus is often a simple traction hook which stretches into between two adjacent spines with dislocation or abnormal bending, and the dislocation or abnormal bending spine is manually pulled, so that the resetting apparatus with the structure needs manual pulling by medical staff, thereby not only being inconvenient for force application, but also being difficult for judging the pulling amount; moreover, the existing traction machinery can only realize unidirectional adjustment between vertebrations, such as the interval between vertebrations; front-back adjustment and interval adjustment cannot be achieved at the same time.
Disclosure of Invention
Based on the problems, the utility model provides the reduction instrument for spinal surgery, which not only can realize the adjustment of the distance between the misplaced vertebra and the normal vertebra, but also can realize the adjustment of the front and back positions of the misplaced vertebra.
In order to solve the technical problems, the utility model adopts the following technical scheme:
a resetting device for spinal surgery comprises a first telescopic adjusting piece, wherein the first telescopic adjusting piece comprises a first fixing component and a first telescopic component which are arranged in a matched mode; the first telescopic component is provided with a second telescopic regulating component, the second telescopic regulating component comprises a second fixed component and a second telescopic component which are arranged in a matched mode, the second telescopic component is movably provided with a first regulating rod, the first regulating rod is axially fixed on the second telescopic component, and the first regulating rod is provided with a rotary handle for rotating the first regulating rod along the circumferential direction; the outer wall of the first fixed component is provided with a positioning rod, the outer wall of the positioning rod is movably sleeved with a second adjusting rod, and the second adjusting rod is perpendicular to the first telescopic component in the telescopic direction; the end head of the positioning rod is provided with a limiting block with the diameter larger than that of the positioning rod, and a groove matched with the limiting block is formed in the second adjusting rod; the first adjusting rod and the second adjusting rod are arranged in parallel and are positioned on the same side of the first fixing component; the ends of the first adjusting rod and the second adjusting rod on the same side are respectively provided with external threads matched with the internal threads of the nuts of the pedicle screws.
Further, the fixing component of the first telescopic adjusting piece comprises a telescopic cylinder and an adjusting bolt, the first telescopic component comprises a telescopic rod, two ends of the telescopic cylinder are opened, one end of the telescopic rod is inserted into the telescopic cylinder, and the other end of the telescopic rod is positioned outside the telescopic cylinder; the inner wall of the telescopic cylinder is provided with a guide groove along the axis, and the outer wall of the telescopic rod is provided with a guide block matched with the guide groove; the end of the telescopic rod inserted into the telescopic cylinder is provided with a threaded hole along the axial direction, one end of the adjusting bolt extends into the telescopic cylinder and is connected with the threaded hole in a matched manner, and the other end of the adjusting bolt is positioned outside the telescopic cylinder; the inner wall of the telescopic cylinder is provided with a first necking section which protrudes inwards at the position corresponding to the adjusting screw, and the outer wall of the adjusting screw is provided with a first limiting groove matched with the first necking section along the circumferential direction.
Further, the second fixing component of the second telescopic adjusting component comprises a sleeve arranged on the first telescopic component, the second telescopic component comprises an inner cylinder, the inner cylinder is movably arranged in the sleeve through threads, and two ends of the inner cylinder are located outside the sleeve.
Further, the first adjusting rod is inserted into the inner cylinder, and two ends of the first adjusting rod are positioned outside the inner cylinder; the inner wall of the inner cylinder is provided with a necking section II protruding inwards at a position corresponding to the first adjusting rod, and the outer wall of the first adjusting rod is provided with a limiting groove II matched with the necking section along the circumferential direction.
Further, an adjusting handle capable of rotating the adjusting rod II along the circumferential direction is arranged on the adjusting rod II.
Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, after the first adjusting rod, the second adjusting rod and pedicle screws on two vertebrae are fixed, the distance between the first adjusting rod and the second adjusting rod is controlled by controlling the telescopic length of the first adjusting rod, so that the distance between the dislocated vertebrae and the normal vertebrae can be adjusted, the front and back position adjustment of the dislocated vertebrae can be realized, and the dislocated vertebrae can be ensured to be reset to physiological positions.
Drawings
FIG. 1 is a schematic illustration of a spinal surgical reduction instrument according to one embodiment;
FIG. 2 is a perspective view of a reduction instrument for spinal surgery without an inner barrel and a second adjustment rod according to an embodiment;
wherein: 1. an adjusting rod I; 2. rotating the handle; 3. a positioning rod; 4. a limiting block; 5. a groove; 6. a telescopic cylinder; 7. an adjusting bolt; 8. a guide groove; 9. a guide block; 10. a threaded hole; 11. an adjusting rod II; 12. necking the first section; 13. a first limit groove; 14. a second necking section; 15. a limiting groove II; 16. adjusting the handle; 17. pedicle screws; 18. a sleeve; 19. an inner cylinder.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present utility model, the present utility model will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present utility model and the descriptions thereof are for illustrating the present utility model only and are not to be construed as limiting the present utility model.
Examples:
referring to fig. 1 and 2, a reduction instrument for spinal surgery comprises a first telescopic adjusting member, wherein the first telescopic adjusting member comprises a first fixing component and a first telescopic component which are arranged in a matched manner; the first telescopic component is provided with a second telescopic regulating component, the second telescopic regulating component comprises a second fixed component and a second telescopic component which are arranged in a matched mode, the second telescopic component is movably provided with a first regulating rod 1, the first regulating rod 1 is axially fixed on the second telescopic component, the first regulating rod 1 is provided with a rotary handle 2, and the first regulating rod 1 is used for rotating the first regulating rod 1 along the circumferential direction; the outer wall of the first fixed component is provided with a positioning rod 3, the outer wall of the positioning rod 3 is movably sleeved with a second adjusting rod 11, and the second adjusting rod 11 is perpendicular to the first telescopic component in the telescopic direction; the end of the positioning rod 3 is provided with a limiting block 4 with the diameter larger than that of the positioning rod 3, and a groove 5 matched with the limiting block 4 is arranged in the second adjusting rod 11; the first adjusting rod 1 and the second adjusting rod 11 are arranged in parallel and are positioned on the same side of the first fixing component; the ends of the same side of the first adjusting rod 1 and the second adjusting rod 11 are respectively provided with external threads matched with the internal threads of the nuts of the pedicle screws 17.
In this embodiment, the first adjusting rod 1 and the second adjusting rod 11 are disposed in parallel on the same side of the first fixing component, the second adjusting rod 11 is perpendicular to the first telescopic component, and the first telescopic adjusting component is used for adjusting the distance between the first adjusting rod 1 and the second adjusting rod 11. When the dislocated spine needs to be reset (aiming at the situation that the dislocation is serious and surgical intervention is needed to be reset), two pedicle screws 17 are arranged on the dislocated spine and the other non-dislocated spine in advance, and the non-dislocated spine is used for playing a role of limiting the bearing force; then the external thread at the end of the second regulating rod 11 is screwed into the nail head thread of the pedicle screw 17; and then the first telescopic adjusting piece is controlled to enable the first adjusting rod 1 and the pedicle screw 17 on the dislocated vertebra to be at the same height, then the second telescopic adjusting piece is controlled to enable the front end of the first adjusting rod 1 to be close to the nail head of the pedicle screw 17 on the dislocated vertebra, and finally the front end of the first adjusting rod 1 is screwed into the nail head thread of the pedicle screw 17 on the dislocated vertebra through external threads by rotating the rotating handle 2 of the first adjusting rod 1. At this time, the first telescopic adjusting piece is adjusted again to adjust the distance between the two vertebrae, the second telescopic adjusting piece is adjusted again to adjust the staggered vertebrae back and forth, after the staggered vertebrae reach the physiological position, a fixing rod is applied between the two pedicle screws 17 to reset the staggered vertebrae, and the pulling amount can be determined through the rotation number of the rotary handle 2, so that the reset is easy to precisely control. And then the adjusting rod I1 and the adjusting rod II 11 are respectively rotated reversely, the adjusting rod I1 and the adjusting rod II 11 can be separated from the corresponding pedicle screws 17, and finally, limit bolts are applied in the nail head threads of the pedicle screws 17, so that the fixing rod and the two pedicle screws 17 can be fixed into an integral structure.
In this embodiment, the fixing component of the first telescopic adjusting piece comprises a telescopic cylinder 6 and an adjusting bolt 7, the first telescopic component comprises a telescopic rod, two ends of the telescopic cylinder 6 are open, one end of the telescopic rod is inserted into the telescopic cylinder 6, and the other end of the telescopic rod is positioned outside the telescopic cylinder 6; the inner wall of the telescopic cylinder 6 is provided with a guide groove 8 along the axis, and the outer wall of the telescopic rod is provided with a guide block 9 matched with the guide groove 8; the end of the telescopic rod inserted into the telescopic cylinder 6 is provided with a threaded hole 10 along the axial direction, one end of the adjusting bolt 7 extends into the telescopic cylinder 6 and is connected with the threaded hole 10 in a matched manner, and the other end of the adjusting bolt 7 extends out of the telescopic cylinder 6; the inner wall of the telescopic cylinder 6 is provided with a first necking section 12 protruding inwards at the position corresponding to the adjusting bolt 7, and the outer wall of the adjusting bolt 7 is provided with a first limiting groove 13 matched with the first necking section 12 along the circumferential direction. The first necking section 12 is matched with the first limiting groove 13, so that the adjusting bolt 7 and the telescopic cylinder 6 can be fixed relatively, and under the interaction of the guide groove 8 and the guide block 9, the first telescopic rod is driven to stretch out and draw back by rotating the adjusting bolt 7, so that the distance between the first adjusting rod 1 and the second adjusting rod 11 is adjusted.
In this embodiment, the second fixing component of the telescopic adjusting component comprises a sleeve 18 arranged on the first telescopic component, the second telescopic component comprises an inner cylinder 19, the inner cylinder 19 is movably arranged in the sleeve 18 through threads, and two ends of the inner cylinder 19 are both positioned outside the sleeve 18. By rotating the inner cylinder 19, a pitch adjustment of the adjustment rod 1 relative to the vertebra (or the pedicle screw 17 applied in the displaced vertebra) can be achieved.
In the embodiment, a first adjusting rod 1 is inserted into an inner cylinder 19, and two ends of the first adjusting rod 1 are positioned outside the inner cylinder 19; the inner wall of the inner cylinder 19 is provided with a necking section II 14 protruding inwards at the position corresponding to the regulating rod I1, and the outer wall of the regulating rod I1 is provided with a limiting groove II 15 matched with the necking section along the circumferential direction. Through the cooperation of necking down section two 14 and spacing groove two 15, can guarantee to rotate and adjust pole one 1, can not produce relative displacement between pole one 1 and the inner tube 19, can guarantee to reset dislocation vertebra.
It should be noted that the first telescopic adjusting member is a mechanism capable of adjusting the distance between the first adjusting rod 1 and the second adjusting rod 11, such as a telescopic rod; the second telescopic adjusting piece is a mechanism capable of adjusting the distance between the first adjusting rod 1 and the vertebra. The telescopic adjusting mechanism capable of realizing the functions is also applicable to the utility model.
The adjusting lever two 11 in the embodiment is provided with the adjusting handle 16 capable of rotating the adjusting lever two 11 along the circumferential direction, so that medical staff can conveniently rotate the adjusting lever two 11, and time and labor are saved.
In this embodiment, the telescopic tube 6, the sleeve 18 and the second adjusting rod 11 are assembled at the mounting position of the internal rotating assembly in a half ring+screw manner to form an integral structure with a limiting mechanism.
The above is an embodiment of the present utility model. The foregoing embodiments and the specific parameters of the embodiments are only for clarity of description of the utility model and are not intended to limit the scope of the utility model, which is defined by the appended claims, and all equivalent structural changes made in the description and drawings of the utility model are intended to be included in the scope of the utility model.
Claims (5)
1. A reduction instrument for spinal surgery, characterized in that: the telescopic adjusting piece comprises a fixed component I and a telescopic component I which are arranged in a matched mode; the first telescopic component is provided with a second telescopic regulating component, the second telescopic regulating component comprises a second fixed component and a second telescopic component which are matched, the second telescopic component is movably provided with a first regulating rod (1), the first regulating rod (1) is axially fixed on the second telescopic component, and the first regulating rod (1) is provided with a rotary handle (2) for rotating the first regulating rod (1) along the circumferential direction; the outer wall of the first fixed component is provided with a positioning rod (3), the outer wall of the positioning rod (3) is movably sleeved with a second adjusting rod (11), and the second adjusting rod (11) is perpendicular to the first telescopic component in telescopic direction; the end of the positioning rod (3) is provided with a limiting block (4) with the diameter larger than that of the positioning rod (3), and a groove (5) matched with the limiting block (4) is formed in the second adjusting rod (11); the first adjusting rod (1) and the second adjusting rod (11) are arranged in parallel and are positioned on the same side of the first fixing component; the end heads on the same side of the first adjusting rod (1) and the second adjusting rod (11) are respectively provided with external threads matched with the internal threads of the nuts of the pedicle screws (17).
2. A spinal surgical reduction apparatus as recited in claim 1, wherein: the fixing component of the first telescopic adjusting piece comprises a telescopic cylinder (6) and an adjusting bolt (7), the first telescopic component comprises a telescopic rod, two ends of the telescopic cylinder (6) are opened, one end of the telescopic rod is inserted into the telescopic cylinder (6), and the other end of the telescopic rod is positioned outside the telescopic cylinder (6); a guide groove (8) is formed in the inner wall of the telescopic cylinder (6) along the axis, and a guide block (9) matched with the guide groove (8) is arranged on the outer wall of the telescopic rod; the end of the telescopic rod inserted into the telescopic cylinder (6) is provided with a threaded hole (10) along the axial direction, one end of the adjusting bolt (7) extends into the telescopic cylinder (6) and is connected with the threaded hole (10) in a matched manner, and the other end of the adjusting bolt (7) extends out of the telescopic cylinder (6); the inner wall of the telescopic cylinder (6) is provided with a first necking section (12) protruding inwards at a position corresponding to the adjusting bolt (7), and the outer wall of the adjusting bolt (7) is provided with a first limiting groove (13) matched with the first necking section (12) along the circumferential direction.
3. A spinal surgical reduction apparatus as recited in claim 1, wherein: the second fixing component of the telescopic adjusting piece comprises a sleeve (18) arranged on the first telescopic component, the second telescopic component comprises an inner cylinder (19), the inner cylinder (19) is movably arranged in the sleeve (18) through threads, and two ends of the inner cylinder (19) are located outside the sleeve (18).
4. A spinal surgical reduction apparatus as recited in claim 3, wherein: the first adjusting rod (1) is inserted into the inner cylinder (19), and two ends of the first adjusting rod (1) are positioned at the outer side of the inner cylinder (19); the inner wall of the inner cylinder (19) is provided with a necking section II (14) protruding inwards at a position corresponding to the adjusting rod I (1), and the outer wall of the adjusting rod I (1) is provided with a limiting groove II (15) matched with the necking section along the circumferential direction.
5. A spinal surgical reduction apparatus according to any one of claims 1-4, wherein: the second adjusting rod (11) is provided with an adjusting handle (16) capable of rotating the second adjusting rod (11) along the circumferential direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223363322.1U CN218943486U (en) | 2022-12-08 | 2022-12-08 | Reduction instrument for spinal surgery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223363322.1U CN218943486U (en) | 2022-12-08 | 2022-12-08 | Reduction instrument for spinal surgery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218943486U true CN218943486U (en) | 2023-05-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223363322.1U Active CN218943486U (en) | 2022-12-08 | 2022-12-08 | Reduction instrument for spinal surgery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218943486U (en) |
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2022
- 2022-12-08 CN CN202223363322.1U patent/CN218943486U/en active Active
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