CN105662662A - Fusion cage lifting driving mechanism - Google Patents
Fusion cage lifting driving mechanism Download PDFInfo
- Publication number
- CN105662662A CN105662662A CN201610211542.2A CN201610211542A CN105662662A CN 105662662 A CN105662662 A CN 105662662A CN 201610211542 A CN201610211542 A CN 201610211542A CN 105662662 A CN105662662 A CN 105662662A
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- Prior art keywords
- sandwich
- fusion device
- spiral shell
- hole
- core
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/4455—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30537—Special structural features of bone or joint prostheses not otherwise provided for adjustable
Abstract
The invention relates to a fusion cage lifting driving mechanism. The fusion cage lifting driving mechanism comprises a screw core, a sandwich, a jacket, a sheath and a fixture block, wherein the sandwich sheathes the screw core and is connected with the screw core by virtue of a screw thread, the first end of the screw core is used for being connected with a screw of a fusion cage, the first end of the sandwich is used for being connected with a sliding block, an upper plate or a lower plate of the fusion cage, the jacket sheaths the sandwich and is close to the first end of the sandwich, the jacket is in threaded connection with the sandwich, the sheath sheathes the sandwich and is close to the second end of the sandwich, the sheath and the sandwich are in sliding fit, a clamping slot is formed in the sheath, an annular groove is formed in the screw core at a position corresponding to the clamping slot, and the fixture block penetrates through the clamping slot to be arranged on the annular groove. The jacket is rotated to enable the sandwich to clamp the sliding block, upper plate or lower plate of the fusion cage, so that the whole fusion cage lifting driving mechanism is stably connected with the fusion cage; and the screw core rotates to drive the screw to rotate, so that height between the upper plate and the lower plate which are connected with the sliding block is increased or reduced.
Description
Technical field
The present invention relates to medical instruments field, particularly to a kind of fusion device lift drive mechanism.
Background technology
In daily life, owing to the reasons such as tumor, fracture, infection cause that the case that vertebral body damages happens occasionally, when treating these patients, the mode adopted at present is to implant a fusion device between the vertebral body damaged, osseous tissue is made to produce creeping substitution, thus repairing the vertebral body of damage, but traditional threaded fusion cage height is fixed, and the intervertebral height of human body can vary with each individual, threaded fusion cage operation cannot be suitable for the different intervertebral heights of different patient by regulating the height of threaded fusion cage, thus cannot be made to be suitable for the intervertebral height of human body completely. Generally there is the fusion device of height adjusting function; screw rod is adopted to drive two slide blocks to draw close or separate; the height between the upper plate being connected with slide block, lower plate is made to increase or reduce; realize fusion device height change, so how drive rotating and ensureing the overall difficult problem being steadily needs and solving of fusion device of screw rod.
Summary of the invention
Based on this, it is necessary to for the defect of prior art, it is provided that a kind of fusion device lift drive mechanism, the screw rod of fusion device can not only be driven to rotate, and in screw rod rotation process, fusion device is overall steadily.
Its technical scheme is as follows:
A kind of fusion device lift drive mechanism, spiral shell core, sandwich, chuck, overcoat and fixture block, described sandwich is set in outside spiral shell core and threadeds with spiral shell core, first end of described spiral shell core is for being connected with the screw rod of fusion device, first end of described sandwich is for the slide block with fusion device, upper plate or lower plate connect, described chuck is set in outside sandwich and near sandwich the first end, described chuck is threadeded with sandwich, described overcoat is set in outside sandwich and near sandwich the second end, described overcoat and sandwich are slidably matched, described outer putting offers draw-in groove, the position that described spiral shell core is corresponding with described draw-in groove is provided with cannelure, described fixture block is fastened on described cannelure through draw-in groove.
Its further technical scheme is as follows:
Described fusion device lift drive mechanism also includes handle and the torque force limiting device being arranged on handle, and the second end of described spiral shell core stretches out described overcoat, and the second end of spiral shell core is connected with described handle.
The core section outer surface that described sandwich is corresponding with overcoat is polyhedral, is provided with the polygonal hole mated with sandwich in described overcoat, the polyhedral core section of described sandwich and the polygonal hole shiding matching of overcoat.
The hole wall that described overcoat coordinates with sandwich is provided with the first groove or the first projection, and the outer wall of described sandwich is provided with the second projection or the second groove with the first male cooperation that are slidably matched with the first groove.
First end of described sandwich has dug holding tank, and the diapire of described holding tank offers the through hole being through to sandwich the second end, and the sidewall of described holding tank offers at least one opening extending to sandwich the first end end face.
The sidewall of described holding tank offers two described openings, first end of described opening is pre-small post-large horn-like, the holding tank of sandwich clamps the folder holder in the slide block of fusion device, upper plate or lower plate, the surface that described folder holder contacts with holding tank is the inclined-plane mated with described opening, and described chuck rotates and makes sandwich locking folder holder.
First end of described spiral shell core offers the first bar-shaped trough that the screw rod with fusion device mates, and the first end of described handle offers the second bar-shaped trough that the second end with spiral shell core mates.
Described spiral shell core is stepped, spiral shell core near the diameter of the core section of its first end less than the diameter of core section near its second end, described sandwich is stepped, sandwich near the diameter of the core section of its first end less than the diameter of core section near its second end, described chuck is set in outside the core section that sandwich diameter is little, and described overcoat is set in outside the core section that sandwich diameter is big.
Described through hole is shoulder hole, described shoulder hole includes the first hole and the second hole that are interconnected, described first hole is near the first end of sandwich, described second hole is near the second end of sandwich, the inwall in the second hole is provided with the screw thread mated with spiral shell core, and described spiral shell core sequentially passes through the second hole, the first hole and is placed in sandwich.
Described chuck is stepped, and chuck is near the diameter of the core section of its first end less than the diameter of core section near its second end, and the big core section of described chuck diameter is provided with clamping position.
Advantage or principle to preceding solution illustrate below:
Above-mentioned fusion device lift drive mechanism, first end of spiral shell core is connected with the screw rod of fusion device, first end of sandwich and the slide block of fusion device, upper plate or lower plate connect, rotating chuck makes sandwich clamp the slide block of described fusion device, upper plate or lower plate, it is connected so that whole fusion device lift drive mechanism is firm with fusion device, spiral shell core rotates and drives screw rod to rotate, thus driving two slide blocks coordinated with screw flight to draw close or separate, make the upper plate being connected with slide block, height between lower plate increases or reduces, and it is stuck on draw-in groove and cannelure owing to being provided with fixture block, described spiral shell core rotates phase to overcoat rotation, when the first end of sandwich is connected with the slide block of fusion device, sandwich can horizontally slip by overcoat relatively, slide steadily, to adapt to the change of slide position.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of fusion device lift drive mechanism described in the embodiment of the present invention;
Fig. 2 is the profile of fusion device lift drive mechanism described in the embodiment of the present invention;
Fig. 3 is the schematic diagram of sandwich described in the embodiment of the present invention;
Fig. 4 is the schematic diagram of spiral shell core described in the embodiment of the present invention;
Fig. 5 is the assembling schematic diagram of sandwich described in the embodiment of the present invention, spiral shell core and handle;
Fig. 6 is fusion device lift drive mechanism described in the embodiment of the present invention and fusion device generalized section;
Fig. 7 is the fusion device schematic diagram of one of which structure;
Fig. 8 is the fusion device schematic diagram of another kind of structure.
Description of reference numerals:
1a (1b), slide block, 1c, nut, 11a (22b) (33c), folder holder, 2a (2b) (2c), lower plate, 3a (3b) (3c), upper plate, 4a (4b) (4c), screw rod, 10, spiral shell core, 110, cannelure, 120, the first bar-shaped trough, 20, sandwich, 210, holding tank, 220, through hole, 230, opening, 30, chuck, 310, clamping position, 40, overcoat, 410, draw-in groove, 50, fixture block, 60, handle, 610, the second bar-shaped trough, 70, torque force limiting device.
Detailed description of the invention
If Fig. 1 is to shown in 5, a kind of fusion device lift drive mechanism, spiral shell core 10, sandwich 20, chuck 30, overcoat 40 and fixture block 50, described sandwich 20 is set in outside spiral shell core 10 and threadeds with spiral shell core 10, first end of described spiral shell core 10 is for being connected with the screw rod of fusion device, first end of described sandwich 20 is for the slide block with fusion device, upper plate or lower plate connect, first end of sandwich 20 described in Fig. 6 is connected with the folder holder 11a on the slide block 1a of fusion device, in Fig. 7, the lower plate 2b of fusion device is provided with folder holder 22b, in Fig. 8, the upper plate 3c of fusion device is provided with folder holder 33c, according to what actual fused device folder restitope was put, difference is set, first end of described sandwich 20 also can be connected with folder holder 22b or folder holder 33c, described chuck 30 is set in outside sandwich 20 and near sandwich 20 first end, described chuck 30 is threadeded with sandwich 20, described overcoat 40 is set in outside sandwich 20 and near sandwich 20 second end, described overcoat 40 is slidably matched with sandwich 20, described overcoat 40 offers draw-in groove 410, the position that described spiral shell core 10 is corresponding with described draw-in groove 410 is provided with cannelure 110, described fixture block 50 is fastened on described cannelure 110 through draw-in groove 410.
Described state fusion device lift drive mechanism, first end of spiral shell core 10 and the screw rod 4a of fusion device, screw rod 4b or screw rod 4c connects, first end of sandwich 20 and the slide block 1a of fusion device, upper plate 3c or lower plate 2b connects, rotating chuck 30 makes sandwich 20 clamp the folder holder 11a on the slide block 1a of described fusion device, the folder holder 22b on folder holder 33c or lower plate 2b on upper plate 3c, it is connected so that whole fusion device lift drive mechanism is firm with fusion device, spiral shell core 10 rotates and drives screw rod to rotate, thus driving two slide blocks coordinated with screw flight to draw close or separate, make the upper plate being connected with slide block, height between lower plate increases or reduces, and it is stuck on draw-in groove 410 and cannelure 110 owing to being provided with fixture block 50, described spiral shell core 10 rotates phase to overcoat 40 rotation, when the first end of sandwich 20 is connected with the slide block of fusion device, sandwich 20 can horizontally slip by overcoat 40 relatively, slide steadily, to adapt to the change of slide position. in Fig. 6 sandwich 20 then with slide block synchronizing moving, in Fig. 7 folder holder in lower plate, owing to lower plate maintains static, the relative screw rod not shift position of sandwich 20, it is connected with the folder holder 2b in lower plate by arranging sandwich 20, makes screw rod lighter in rotary course, and make upper plate keep fixed position with lower plate.
As shown in Figure 1, 2, described fusion device lift drive mechanism also includes handle 60 and the torsion that is arranged on handle 60 limits 70 devices, and the second end of described spiral shell core 10 stretches out described overcoat 40, and the second end of spiral shell core 10 is connected with described handle 60. Driving spiral shell core 10 to rotate by rotary handle 60, described torque force limiting device 70 is to limit torsion, and console lift degree, namely when reaching certain dynamics, it is impossible to twisting, it is to avoid handle 60 rotates excessively, can be selected for ratchet etc. as torque force limiting device 70.
As shown in Figure 2,3, the core section outer surface that described sandwich 20 is corresponding with overcoat 40 is polyhedral, is provided with the polygonal hole mated with sandwich 20 in described overcoat 40, the polyhedral core section of described sandwich 20 and the polygonal hole shiding matching of overcoat 40. The polyhedral core section of sandwich 20 described in the present embodiment is hexahedron shape, can certainly be other shapes, such as pentahedron, heptahedron etc., hexagonal hole, pentagon hole or the heptagon hole mated with sandwich 20 it is correspondingly provided with in described overcoat 40, the inner surface of described overcoat 40 and polyhedral core section shiding matching, so arranging makes the relative overcoat 40 of sandwich 20 to horizontally slip, without rotating.
According to the actual requirements, core section outer surface corresponding with overcoat 40 for described sandwich 20 can not also be arranged to polyhedral, but the first groove or the first projection are set on the hole wall that described overcoat 40 coordinates with sandwich 20, the outer wall of described sandwich 20 arranges the second projection or the second groove with the first male cooperation that are slidably matched with the first groove, so that sandwich 20 can slide by overcoat 40 relatively, without rotating.
Such as Fig. 3, shown in 6, first end of described sandwich 20 has dug holding tank 210, the diapire of described holding tank 210 offers the through hole 220 being through to sandwich 20 second end, the sidewall of described holding tank 210 offers at least one opening 230 extending to sandwich 20 first end end face. Described folder holder 11a, folder holder 22b or folder holder 33c are placed in described holding tank 210, are easy to clamp holder by described opening 230 1 aspect, make the bore of holding tank 210 that miniature deformation can occur on the other hand, it is simple to clamping folder holder. The sidewall of holding tank 210 described in the present embodiment offers two described openings 230, first end of described opening 230 is pre-small post-large horn-like, the holding tank 210 of sandwich 20 clamps the folder holder 11a of fusion device, folder holder 22b or folder holder 33c, the surface that described folder holder contacts with holding tank 210 is the inclined-plane mated with described opening 230, and described chuck 30 rotates and makes sandwich 20 locking folder holder. The front end sleeve of described sandwich 20 is in folder holder, the surface contacted with holding tank 210 due to folder holder 11a, folder holder 22b or folder holder 33c is inclined-plane, the front end of sandwich 20 offers the opening 230 along its axial direction, first end of opening 230 is pre-small post-large horn-like, so chuck 30 constantly oppresses the sandwich 20 of opening 230 both sides while rotating towards folder holder, make sandwich 20 locking folder holder, reversely rotate chuck 30, unclamp sandwich 20, it is simple to dismounting.
As shown in Figure 4, in the present embodiment, the first end of described spiral shell core 10 offers the first bar-shaped trough 120 that the screw rod with fusion device mates, and the first end of described handle 60 offers the second bar-shaped trough 610 that the second end with spiral shell core 10 mates. One end that described spiral shell core 10 is connected with handle 60, in the kidney-shaped mated with described second bar-shaped trough 610, makes spiral shell core 10 and handle 60 link, does not relatively rotate between the two. Corresponding, one end that screw rod 4a, screw rod 4b or screw rod 4c are connected with spiral shell core 10, in the kidney-shaped mated with described first bar-shaped trough 120, makes screw rod and spiral shell core 10 link, does not relatively rotate between the two.
As shown in Figure 4, described spiral shell core 10 is stepped, spiral shell core 10 near the diameter of the core section of its first end less than the diameter of core section near its second end, as shown in Figure 2,3, described sandwich 20 is stepped, sandwich 20 is near the diameter of the core section of its first end less than the diameter of core section near its second end, and described chuck 30 is set in outside the core section that sandwich 20 diameter is little, and described overcoat 40 is set in outside the core section that sandwich 20 diameter is big.Described through hole 220 is shoulder hole, described shoulder hole includes the first hole and the second hole that are interconnected, described first hole is near the first end of sandwich 20, described second hole is near the second end of sandwich 20, the inwall in the second hole is provided with the screw thread mated with spiral shell core 10, and described spiral shell core 10 sequentially passes through the second hole, the first hole and is placed in sandwich 20. So arranging makes spiral shell core 10 be limited in sandwich 20, and is easy to draw-in groove 410 and cannelure 110 are carried out para-position, it is simple to install, on the other hand the size of the screw rod with folder holder for adapting to fusion device. Described chuck 30 is stepped, chuck 30 near the diameter of the core section of its first end less than the diameter of core section near its second end, and the big core section of described chuck 30 diameter is provided with clamping position 310, on the one hand for adapting to fusion device size, the opposing party strengthens the intensity of clamping position 310, by clamping the clamping position 310 of chuck 30, convenient drive presss from both sides holder rotation, it is achieved degree of tightness sandwich 20.
Fig. 6 is the assembling section of fusion device lift drive mechanism and fusion device, fusion device upper plate 3a in this figure, the slide block 1a of lower plate 2a and left and right is engaged each other by the tooth on inclined-plane and coordinates, sandwich 20 is enclosed within folder holder 11a, rotate screw rod 4a, drive and Tong Bu with two slide block 1a of its threaded engagement draw close to centre, upwards jack-up upper plate 3a and/or downwards jack-up lower plate 2a gradually, upper plate 3a and lower plate 2a is strutted, so that the distance between upper plate 3a and lower plate 2a increases, rotate backward screw rod 4a, two slide block 1a are driven to synchronize to move laterally, the distance between upper plate 3a and lower plate 2a is made to reduce, realize altitude mixture control, it is suitable for the different intervertebral heights of different patient, drive the fusion device of this structure, described sandwich 20 is mobile with the movement of upper plate 3c. driving the fusion device of this structure, described sandwich 20 is mobile with the movement of slide block 1a.
Fusion device shown in Fig. 7, its upper plate 3b, lower plate 2b is connected by the elevating lever of two cross-articulation with the slide block 1b of left and right, sandwich 20 is enclosed within folder holder 22b, rotate screw rod 4b, drive and Tong Bu with two slide block 1b of its threaded engagement draw close to centre, thus driving two elevating levers to rotate, upper plate 3b and lower plate 2b is strutted, so that the distance between upper plate 3b and lower plate 2b increases, rotate backward screw rod 4b, two slide block 1b are driven to synchronize to move laterally, upper 3b plate is drawn close with lower plate 2b, so that the distance between upper plate 3b and lower plate 2b reduces, realize altitude mixture control, it is suitable for the different intervertebral heights of different patient. driving the fusion device of this structure, if lower plate 2b position is fixed, then described relative spiral shell core 10 position of sandwich 20 is fixed.
Fusion device shown in Fig. 8, its screw rod 4c one end is spacing on lower plate 2c rotationally, the other end is threadeded with nut 1c, and nut 1c is connected with upper plate 3c, upper plate 3c and lower plate 2c engages cooperation by the tooth in inclined plane, sandwich 20 is enclosed within folder holder 33c, rotate screw rod 4c, drive and Tong Bu with the nut 1c of its threaded engagement draw close in the middle of screw rod, thus driving upper plate 3c to rise along the inclined plane of lower plate 2c, the height between upper plate 3c and lower plate 2c is made to increase, rotate backward screw rod 4c, nut 1c is driven to synchronize to move to away from the direction in the middle of screw rod, thus driving upper plate 3c to decline along the inclined plane of lower plate 2c, the height between upper plate 3c and lower plate 2c is made to reduce, realize altitude mixture control, it is suitable for the different intervertebral heights of different patient, drive the fusion device of this structure, described sandwich 20 is mobile with the movement of upper plate 3c.
Each technical characteristic of embodiment described above can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics is absent from contradiction, all it is considered to be the scope that this specification is recorded.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention. It should be pointed out that, for the person of ordinary skill of the art, without departing from the inventive concept of the premise, it is also possible to making some deformation and improvement, these broadly fall into protection scope of the present invention. Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a fusion device lift drive mechanism, it is characterized in that, spiral shell core, sandwich, chuck, overcoat and fixture block, described sandwich is set in outside spiral shell core and threadeds with spiral shell core, first end of described spiral shell core is for being connected with the screw rod of fusion device, first end of described sandwich is for the slide block with fusion device, upper plate or lower plate connect, described chuck is set in outside sandwich and near sandwich the first end, described chuck is threadeded with sandwich, described overcoat is set in outside sandwich and near sandwich the second end, described overcoat and sandwich are slidably matched, described outer putting offers draw-in groove, the position that described spiral shell core is corresponding with described draw-in groove is provided with cannelure, described fixture block is fastened on described cannelure through draw-in groove.
2. fusion device lift drive mechanism as claimed in claim 1, it is characterised in that it also includes handle and the torque force limiting device being arranged on handle, and the second end of described spiral shell core stretches out described overcoat, and the second end of spiral shell core is connected with described handle.
3. fusion device lift drive mechanism as claimed in claim 1 or 2, it is characterized in that, the core section outer surface that described sandwich is corresponding with overcoat is polyhedral, is provided with the polygonal hole mated with sandwich in described overcoat, the polyhedral core section of described sandwich and the polygonal hole shiding matching of overcoat.
4. fusion device lift drive mechanism as claimed in claim 1 or 2, it is characterized in that, the hole wall that described overcoat coordinates with sandwich is provided with the first groove or the first projection, and the outer wall of described sandwich is provided with the second projection or the second groove with the first male cooperation that are slidably matched with the first groove.
5. fusion device lift drive mechanism as claimed in claim 1 or 2, it is characterized in that, first end of described sandwich has dug holding tank, the diapire of described holding tank offers the through hole being through to sandwich the second end, the sidewall of described holding tank offers at least one opening extending to sandwich the first end end face.
6. fusion device lift drive mechanism as claimed in claim 5, it is characterized in that, the sidewall of described holding tank offers two described openings, first end of described opening is pre-small post-large horn-like, the holding tank of sandwich clamps the folder holder in the slide block of fusion device, upper plate or lower plate, the surface that described folder holder contacts with holding tank is the inclined-plane mated with described opening, and described chuck rotates and makes sandwich locking folder holder.
7. fusion device lift drive mechanism as claimed in claim 2, it is characterised in that the first end of described spiral shell core offers the first bar-shaped trough that the screw rod with fusion device mates, and the first end of described handle offers the second bar-shaped trough that the second end with spiral shell core mates.
8. fusion device lift drive mechanism as claimed in claim 1 or 2, it is characterized in that, described spiral shell core is stepped, spiral shell core near the diameter of the core section of its first end less than the diameter of core section near its second end, described sandwich is stepped, sandwich is near the diameter of the core section of its first end less than the diameter of core section near its second end, and described chuck is set in outside the core section that sandwich diameter is little, and described overcoat is set in outside the core section that sandwich diameter is big.
9. fusion device lift drive mechanism as claimed in claim 5, it is characterized in that, described through hole is shoulder hole, described shoulder hole includes the first hole and the second hole that are interconnected, described first hole is near the first end of sandwich, described second hole is near the second end of sandwich, and the inwall in the second hole is provided with the screw thread mated with spiral shell core, and described spiral shell core sequentially passes through the second hole, the first hole and is placed in sandwich.
10. fusion device lift drive mechanism as claimed in claim 1 or 2, it is characterized in that, described chuck is stepped, and chuck is near the diameter of the core section of its first end less than the diameter of core section near its second end, and the big core section of described chuck diameter is provided with clamping position.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610211542.2A CN105662662B (en) | 2016-04-05 | 2016-04-05 | Fusion device lift drive mechanism |
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| CN201610211542.2A CN105662662B (en) | 2016-04-05 | 2016-04-05 | Fusion device lift drive mechanism |
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| CN105662662B CN105662662B (en) | 2018-06-26 |
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| US10888356B2 (en) | 2013-05-13 | 2021-01-12 | Neo Medical S.A. | Orthopedic implant kit |
| CN106166092A (en) * | 2016-08-31 | 2016-11-30 | 广州爱锘德医疗器械有限公司 | Lift threaded fusion cage and for driving the operator of lifting threaded fusion cage |
| CN106308984A (en) * | 2016-08-31 | 2017-01-11 | 广州爱锘德医疗器械有限公司 | Bidirectional lifting fusion cage and rotating mechanism used for driving bidirectional lifting fusion cage |
| CN106308984B (en) * | 2016-08-31 | 2018-09-14 | 广州爱锘德医疗器械有限公司 | Bidirectional up-down fusion device and rotating mechanism for driving Bidirectional up-down fusion device |
| US11628070B2 (en) | 2018-02-26 | 2023-04-18 | Neo Medical Sa | Spine cage holder |
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