CN2283466Y - Clamping type spine internal fixator - Google Patents
Clamping type spine internal fixator Download PDFInfo
- Publication number
- CN2283466Y CN2283466Y CN 96223825 CN96223825U CN2283466Y CN 2283466 Y CN2283466 Y CN 2283466Y CN 96223825 CN96223825 CN 96223825 CN 96223825 U CN96223825 U CN 96223825U CN 2283466 Y CN2283466 Y CN 2283466Y
- Authority
- CN
- China
- Prior art keywords
- clamp
- connecting rod
- auxiliary
- main part
- pedicle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 30
- 210000002421 cell wall Anatomy 0.000 claims description 3
- 201000010099 disease Diseases 0.000 abstract description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 3
- 238000001356 surgical procedure Methods 0.000 abstract description 2
- 230000001225 therapeutic effect Effects 0.000 abstract 1
- 238000000641 cold extrusion Methods 0.000 description 5
- 238000002161 passivation Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 206010017076 Fracture Diseases 0.000 description 1
- 206010023509 Kyphosis Diseases 0.000 description 1
- 208000007623 Lordosis Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 208000020307 Spinal disease Diseases 0.000 description 1
- 240000002299 Symphytum officinale Species 0.000 description 1
- 235000005865 Symphytum officinale Nutrition 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 210000000080 chela (arthropods) Anatomy 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000037231 joint health Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 206010041569 spinal fracture Diseases 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 210000000115 thoracic cavity Anatomy 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
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- Surgical Instruments (AREA)
Abstract
The utility model belongs to a therapeutic device in bone surgery. Two main clamp pieces are sheathed on a connecting rod of the fixing device. Auxiliary clamp pieces are sheathed on rods of the main clamp pieces, and the inner part of grooves of the auxiliary clamp pieces, which face the connecting rod, are provided with screws of vertebral pedicle bones. The screws of vertebral pedicle bones are screwed on the rods of the main clamp pieces to make the parts fixedly connected with each other by locking nuts. Before the locking nuts are screwed down, the main clamp pieces can move and rotate relatively to the connecting rod, the auxiliary clamp pieces can be rotate relative to the main clamp pieces, and the screws of vertebral pedicle bones can move in the grooves. The utility model has the advantages of simple structure and convenient use. When the utility model is used for treating the diseases of spinal columns, the screws of vertebral pedicle bones can be adjusted in three-dimensional space.
Description
This utility model relates to the device for the treatment of bone or joint in a kind of Orthopeadic Surgery.Be mainly used in the basic fixed of spinal column, comprise the operative treatment of diseases such as being used for spinal trauma, spinal fusion and tumor of spine.
Existing spinal fixation device, it is comparatively permanent to use in facing the disease operation as enlightening gram nail (Dick), and enlightening gram nail can be realized three-dimensional moving, but structure is too complicated, and its locking needs 4 nuts and 2 afterburning dishes to realize, thereby operation is also complicated.Another kind of internal fixation of spine device commonly used at present is the functional spinal reduction fixture device, it is fixing that this holder can be used for that spinal fracture is fixed, rectification of lordosis and kyphosis deformity, spondylolishesis etc. reset, structure is also fairly simple, but it can only move in two-dimensional space, because the partial fracture of spinal column, condition of illness such as wound and slippage, convex protrusion are Protean, often occur in the three dimensions, and therefore the use of this device is subjected to certain restriction.
The purpose of this utility model is, pedicle of vertebral arch bone screw adjustable clamp-type spinal column internal fixation device in three dimensions when a kind of simple in structure, easy to use, treatment spinal disease is provided.
The technical scheme that realizes this utility model purpose is (referring to Fig. 1 to Figure 10), this holder has connecting rod (1) and 2 pedicle of vertebral arch bone screw (2), its construction features is, also have 2 clamp main parts (3), clamp auxiliary (4) and locking nut (5), on the caliper of clamp main part (3) (32) be provided with through hole (34) and with the perpendicular bar that is provided with screw thread (31) of axis of this through hole (34), clamp main part (3) is enclosed within on the connecting rod (1) by its through hole (34), clamp auxiliary (4) is provided with through hole (43) and towards the groove (44) of connecting rod (1), clamp auxiliary (4) is enclosed within on the bar (31) of clamp main part (3) by its through hole (43), and screwing fixingly by locking nut (5), the part of pedicle of vertebral arch bone screw (2) nail section is located in the groove (44) of clamp auxiliary (4).Before locking nut (5) was screwed, clamp main part (3) can move and rotate with respect to connecting rod (1), and clamp auxiliary (4) can rotate relative to clamp main part (3), and pedicle of vertebral arch bone screw (2) can move in groove (44).
Above-mentioned connecting rod (1) is a screw rod, the groove (44) of clamp auxiliary (4) is a circular groove, and the axis of the axis of circular groove (44) and clamp auxiliary (4) through hole (43) is an orthogonal space different surface beeline, pedicle of vertebral arch bone screw (2) contacts with the cell wall and the connecting rod (1) of the groove (44) of clamp auxiliary (4), and the end face towards connecting rod (1) of clamp auxiliary (4) is provided with and the contacted tooth of connecting rod (1) (41).
The tooth (41) of above-mentioned clamp auxiliary (4) is located on the projection (42), the convex shoulder of the caliper (32) that links to each other with bar (31) of clamp main part (3) is provided with locating surface (33), and the inner face of the projection (42) of clamp auxiliary (4) is corresponding with the locating surface (33) of clamp main part (3).
The upper end of above-mentioned pedicle of vertebral arch bone screw (2) is provided with common closely-pitched external screw thread, and the lower end is provided with tapered thread, and the intracavity of upper end is provided with common fine thread, and upper end is an outer-hexagonal nut head.
The utlity model has positive effect: (1) this utility model is simple in structure, has that volume is little, in light weight, convenience operation, compares with enlightening gram nail and can shorten operating time about 1/4.(2) operation this utility model moves the adjusting space and can reach three-dimensional, can finish compressing (i.e. extruding), disperse diversified corrections such as (promptly drawing back), and the ridge awl is resetted accurately, fixes safe and reliable.(3) this utility model also can be used for the treatment of low level thoracic vertebra and lumbar vertebra, has enlarged sanatory field.
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is the vertical view of Fig. 1, and left part wherein is the A-A cutaway view of Fig. 1.
Fig. 3 is the left view of Fig. 1, and top wherein is the B-B cutaway view of Fig. 1.
Fig. 4 is a kind of structural representation of this utility model clamp main part.
Fig. 5 is the upward view of Fig. 4.
Fig. 6 is the right view of Fig. 4.
Fig. 7 is a kind of structural representation of this utility model clamp auxiliary.
Fig. 8 is the upward view of Fig. 7.
Fig. 9 is the C-C cutaway view of Fig. 7.
Figure 10 is that the D at I place of Fig. 7 is to enlarged diagram.
Figure 11 is the sketch map that this utility model pedicle of vertebral arch bone screw is screwed in spinal column.
Figure 12 is installed to sketch map on the pedicle of vertebral arch bone screw for the connecting rod that will connect clamp main part and clamp auxiliary by release link.
Figure 13 for use reduction instrument and normal ring disperser operation this utility model with adjust between vertebra distance up and down and about the sketch map of distance.
Figure 14 adjusts pedicle of vertebral arch bone screw position in the clamp auxiliary for using spinal column reach reduction instrument, thereby makes the sketch map that longitudinal separation obtains adjusting between vertebrae.
Below in conjunction with drawings and Examples, application examples this utility model is further described.
Embodiment 1
See Fig. 1 to Figure 10,
Each part material of present embodiment is made by medical stainless steel 317L.Make it to strengthen through cold extrusion with φ 6 bars, Vehicle Processing screw thread then polishes passivation again and promptly makes as shown in Figure 1 to Figure 3 connecting rod (1).Make locking nut (5) as shown in the figure with bar through cold extrusion, the processing of turnning and milling pincers, polishing passivation.Polish passivation with bar again through the processing of cold extrusion, turnning and milling and make as shown in the figure pedicle of vertebral arch bone screw (2).The upper end of pedicle of vertebral arch bone screw (2) is provided with common closely-pitched external screw thread, and the lower end is provided with tapered thread, and the intracavity of upper end is provided with common fine thread, and upper end is an outer-hexagonal nut head.Bar with φ 19 mills and is processed into square stock through cold extrusion, plane, and again through eccentric fixture Vehicle Processing rod (31), bar (31) is provided with the M5 screw thread; Get out through hole (34) then, mill the outerplanar of processing caliper (32), file out locating surface (33), polish passivation at last again and promptly make the clamp main part (3) of Fig. 4 to shape shown in Figure 6.Mill and be processed into square stock through cold extrusion, plane with φ 9 bars, on square stock, get out through hole (43), mill and be processed into circular groove (44) and projection (42), compress tooth (41) on the end face outwardly of projection (42) is polished passivation again and is promptly made the clamp auxiliary (4) of Fig. 7 to shape shown in Figure 10.
During installation, 2 clamp main parts (3) are enclosed within on the connecting rod (1) by its through hole (34), be enclosed within 2 clamp auxiliaries (4) on the bar (31) of corresponding clamp main part (3) respectively by its through hole (43), and screw respectively with 2 locking nuts (5), the upper end of pedicle of vertebral arch bone screw (2) is located in the circular groove (44) of clamp auxiliary (4) and its nail body contacts with the cell wall and the connecting rod (1) of groove (44).At last locking nut (5) is screwed and each part is fixedly linked.The tooth (41) of clamp auxiliary (4) contact with connecting rod (1) and the locating surface (33) of the inner face of the projection (42) of clamp auxiliary (4) and clamp main part (3) corresponding.Screw that locking nut (5) is preceding, clamp main part (3) can move and rotate with respect to connecting rod (1), clamp auxiliary (4) can rotate relative to clamp main part (3), pedicle of vertebral arch bone screw (2) can move in groove (44).
All the other are with embodiment 1, and difference is that each part material therefor is a titanium alloy.
Application examples
See Figure 11 to Figure 14,
During use, 1. on the contiguous healthy joint of compromised spine joint, hole.2. see Figure 11, the termination is had in the inner chamber of externally threaded release link (61) screw-in pedicle of vertebral arch bone screw (2) upper end, put wrench (62), again pedicle of vertebral arch bone screw (2) is screwed in the joint of having holed in the rear end of release link (61).3. see Figure 12,2 method is with in another root pedicle of vertebral arch bone screw implantable bone set by step, the connecting rod (1) that connects 2 clamp main parts (3) and clamp auxiliary (4), be enclosed within the upper end of corresponding pedicle of vertebral arch bone screw (2) by release link (61) by the through hole (43) on the clamp auxiliary (4).4. see Figure 13, clamping release link (61) with reduction instrument (71) is determined the distance between the 2 pedicle of vertebral arch bone screw in clamp member place (2) upper end, adjust the knob on the band disperser (72) then, because of clamp auxiliary (4) can rotate with respect to the bar (31) of clamp main part (3), so make the distance up and down that can make between the joint obtain adjusting.Again because clamp main part (3) can rotate with respect to connecting rod (1), thus difference that can be by bore angle when boring, the effect of adding reduction instrument (71) and band disperser (72) adjust between the joint about distance.5. see Figure 14, remove reduction instrument (71) and band disperser (72), on release link (61), load onto spinal column reach reduction instrument (8).Regulate lift-bolt (81), mainly mobile with respect to clamp auxiliary (4), the joint of spinal column is moved forward and backward, thereby make spinal column obtain adjusting because of pedicle of vertebral arch bone screw (2).6. after joint is adjusted to the right place, screw locking nut (5) with the hexagon wrench, promptly finished spinal column reset and fixing.
Claims (4)
1, a kind of clamp-type spinal column internal fixation device, have connecting rod (1) and 2 pedicle of vertebral arch bone screw (2), it is characterized in that, also have 2 clamp main parts (3), clamp auxiliary (4) and locking nut (5), the caliper (32) of clamp main part (3) be provided with through hole (34) and with the perpendicular bar that is provided with screw thread (31) of axis of this through hole (34), clamp main part (3) is enclosed within on the connecting rod (1) by its through hole (34), clamp auxiliary (4) is provided with through hole (43) and towards the groove (44) of connecting rod (1), clamp auxiliary (4) is enclosed within on the bar (31) of clamp main part (3) by its through hole (43), and screwing fixingly by locking nut (5), the part of pedicle of vertebral arch bone screw (2) nail section is located in the groove (44) of clamp auxiliary (4); Before locking nut (5) was screwed, clamp main part (3) can move and rotate with respect to connecting rod (1), and clamp auxiliary (4) can rotate relative to clamp main part (3), and pedicle of vertebral arch bone screw (2) can move in groove (44).
2, clamp-type spinal column internal fixation device according to claim 1, it is characterized in that, connecting rod (1) is a screw rod, the groove (44) of clamp auxiliary (4) is a circular groove, and the axis of the axis of circular groove (44) and clamp auxiliary (4) through hole (43) is an orthogonal space different surface beeline, pedicle of vertebral arch bone screw (2) contacts with the cell wall and the connecting rod (1) of the groove (44) of clamp auxiliary (4), and the end face towards connecting rod (1) of clamp auxiliary (4) is provided with and the contacted tooth of connecting rod (1) (41).
3, clamp-type spinal column internal fixation device according to claim 2, it is characterized in that, the tooth (41) of clamp auxiliary (4) is located on the projection (42), the convex shoulder of the caliper (32) that links to each other with bar (31) of clamp main part (3) is provided with locating surface (33), and the inner face of the projection (42) of clamp auxiliary (4) is corresponding with the locating surface (33) of clamp main part (3).
4, clamp-type spinal column internal fixation device according to claim 1 is characterized in that, the upper end of pedicle of vertebral arch bone screw (2) is provided with common closely-pitched external screw thread, and the lower end is provided with tapered thread, and the intracavity of upper end is provided with common fine thread, and upper end is an outer-hexagonal nut head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96223825 CN2283466Y (en) | 1996-10-08 | 1996-10-08 | Clamping type spine internal fixator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96223825 CN2283466Y (en) | 1996-10-08 | 1996-10-08 | Clamping type spine internal fixator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2283466Y true CN2283466Y (en) | 1998-06-10 |
Family
ID=33902948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96223825 Expired - Fee Related CN2283466Y (en) | 1996-10-08 | 1996-10-08 | Clamping type spine internal fixator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2283466Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101686843B (en) * | 2007-07-12 | 2012-08-08 | Ldr医疗公司 | Transverse spinal linking device and system |
| CN103519874A (en) * | 2013-10-22 | 2014-01-22 | 宋西正 | External fixing device for minimally invasive spine leverage reduction |
-
1996
- 1996-10-08 CN CN 96223825 patent/CN2283466Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101686843B (en) * | 2007-07-12 | 2012-08-08 | Ldr医疗公司 | Transverse spinal linking device and system |
| CN103519874A (en) * | 2013-10-22 | 2014-01-22 | 宋西正 | External fixing device for minimally invasive spine leverage reduction |
| CN103519874B (en) * | 2013-10-22 | 2017-02-08 | 宋西正 | External fixing device for minimally invasive spine leverage reduction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |