CN101856260B - Dynamic non-fusion connector - Google Patents
Dynamic non-fusion connector Download PDFInfo
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- CN101856260B CN101856260B CN2010102067309A CN201010206730A CN101856260B CN 101856260 B CN101856260 B CN 101856260B CN 2010102067309 A CN2010102067309 A CN 2010102067309A CN 201010206730 A CN201010206730 A CN 201010206730A CN 101856260 B CN101856260 B CN 101856260B
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- fusion connector
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Abstract
The invention relates to a dynamic non-fusion connector which belongs to the field of medical apparatuses. The dynamic non-fusion connector is matched with spinal screws and used for treating diseases of spinal instability, deformity, spondylolisthesis, spinal canal stenosis, fracture, and the like. The dynamic non-fusion connector comprises a spring shaft (1), a limit sleeve (2), a limit core (3), a stud (4) and a fixed shaft (5) and is characterized in that the left end of the spring shaft (1) adopts a polished rod design and is provided with an internal thread through hole, and the right end of the spring shaft (1) adopts an annular spring structure and is provided with a step hole, and gaps and small circular holes are arranged among rings of the annular spring structure; and a tapered face, a step cylinder surface and a notch are arranged on the outer surface of the limit sleeve (2), and a step through-hole is arranged in the center of the limit sleeve (2). An application method of the dynamic on-fusion connector comprises the following steps of: firstly determining the embedded depth and orientation of the spinal screws and the length of the dynamic non-fusion connector, drilling a hole, holding the spinal screw, embedding into a vertebral body, embedding other spinal screws, then embedding the dynamic non-fusion connector, screwing a top thread in, and compressing the dynamic non-fusion connector to a final locking position so as to realize the dynamic non-fusion fixing of a system.
Description
Technical field
The present invention relates to a kind of dynamic non-fusion connector, belong to medical instruments field, this dynamic non-fusion connector and spinal column nail are used, and are used to treat diseases such as unstable spine, deformity, slippage, spinal canal stenosis, fracture.
Background technology
Diseases such as unstable spine, deformity, slippage, spinal canal stenosis, fracture cause serious inconvenience for people's life and social work.Unstable spine can produce local low back pain and the false radiating pain on the axial plane, and radiating pain and delayed ischemic neurological deficits.Diseases such as orthopaedics therapy unstable spine, deformity, slippage, spinal canal stenosis, fracture when carrying out posterior approach, adopt nail-stick system to implement internal fixation: the USS spinal column general-purpose system of AO SYTHNES more; The CD HORIZON system of Medtronic Sofamor Danek etc.That these apparatuses have is safe and reliable, stable performance, characteristics such as simple to operate, but be that converged fixed, intervertebral mobility are seriously limited, spinal column adjacent segment degeneration seriously, higher relatively drawbacks such as complication.
Summary of the invention
The present invention under the prerequisite that keeps the prior art advantage, overcomes its drawback just, and a kind of suitable state human body type is provided, and has the advantage of reasonable, safe and reliable, simple to operate, the dynamic non-converged fixed of structure, advanced design.
Technical scheme of the present invention is following:
Dynamic non-fusion connector; Form by spring shaft (1), stop collar (2), spacing core (3), double-screw bolt (4), fixed axis (5); It is characterized in that: spring shaft (1) left end designs for polished rod and internal thread through hole is arranged; The right-hand member inner surface has stepped hole, and right-hand member is the ring-spring structure, and there is small sircle hole gapped and junction between adjacent ring; Stop collar (2) outer surface has the conical surface and step cylinder; Left end has 4 places to be uniformly distributed with fluting along the conical surface, and the center is a step through-hole, in stop collar (2), spacing core (3), fixed axis (5) the inserting spring axle (1); Spring shaft (1), stop collar (2), fixed axis (5) are fixed together through double-screw bolt (4); Dynamic non-fusion connector axially can stretch and reverse, and side direction can be crooked, can realize transshipping limit function through stop collar (2), spacing core (3).
Spring shaft (1): right-hand member is the ring-spring structure, and there is small sircle hole gapped and junction between adjacent ring, and certain mobility can be provided, and realizes dynamic non-converged fixed, and spring shaft (1) can be designed plurality of specifications.
Stop collar (2): outer surface has the conical surface and step cylinder; Left end has 4 places to be uniformly distributed with fluting along the conical surface; The center is a step through-hole, and in stop collar (2), spacing core (3), fixed axis (5) the inserting spring axle (1), spring shaft (1), stop collar (2), fixed axis (5) are fixed together through double-screw bolt (4); Certain mobility is provided, realizes dynamic non-converged fixed.
Spacing core (3): left end has circular arc chamfering, annular groove, and the annular groove right ends is the conical surface, and the left end end face has a word groove, and right-hand member has screw thread, annular groove, step, and spacing core (3) can be designed plurality of specifications as required.
Fixed axis (5): shaft-like for step, fixed axis (5) can be designed plurality of specifications as required.
Through diagnosis such as CT or X-ray vertebra disease before the art; Implement the vertebra posterior approach: the intervertebral disc and the vertebral body sections of excision or cleaning damage, confirm that according to patient main suit and diagnostic result needs fixed-segment, used implant comprise the size and the quantity of spinal column nail and dynamic non-fusion connector.At first confirm the degree of depth and orientation that the spinal column nail is implanted, and the length of dynamic non-fusion connector, on vertebral body, implement boring, hold and get the spinal column nail, make in its firm embedding vertebral body, use the same method and implant other spinal column nails; Implant and adjust dynamic non-fusion connector to the appropriate location; Be screwed into jackscrew successively, compress dynamic non-fusion connector, realize the dynamic non-converged fixed of system to final locked position.
Dynamic non-fusion connector can provide certain mobility and provide the way of escape enough supports, and histocompatibility is good, and is wear-resistant.Through the support near the mobility and the way of escape of physiological status is provided, control causes the abnormal movement of pain, thereby reaches relieve clinical symptoms and prevent that carrying out property of regression from increasing the weight of, even promotes the purpose that intervertebral disc is repaired.
Reasonable, safe and reliable, simple to operate, the dynamic non-converged fixed of dynamic non-fusion connector structure, advanced design are suitable for the orthopaedics clinical application.Dynamic non-fusion connector can be eliminated the ABNORMAL STRESS that causes intervertebral disc source property lumbago through providing near the displacement of conduction of the load of physiological status and control abnormity, alleviating pain, and can alleviate even avoid the regression of adjacent segment.
Description of drawings
Fig. 1 is a dynamic non-fusion connector structure chart of the present invention.
Fig. 2 is the structure chart of spring shaft of the present invention (1).
Fig. 3 is the ring spring unfolding assumption diagram of spring shaft of the present invention (1).
Fig. 4 is stop collar of the present invention (a 2) structure chart.
Fig. 5 is spacing core of the present invention (a 3) structure chart.
Fig. 6 is double-screw bolt of the present invention (a 4) structure chart.
Fig. 7 is fixed axis of the present invention (a 5) structure chart.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described further.
Dynamic non-fusion connector; Form by spring shaft (1), stop collar (2), spacing core (3), double-screw bolt (4), fixed axis (5); It is characterized in that: spring shaft (1) left end designs for polished rod and internal thread through hole is arranged; The right-hand member inner surface has stepped hole, and right-hand member is the ring-spring structure, and there is small sircle hole gapped and junction between adjacent ring; Stop collar (2) outer surface has the conical surface and step cylinder; Left end has 4 places to be uniformly distributed with fluting along the conical surface, and the center is a step through-hole, in stop collar (2), spacing core (3), fixed axis (5) the inserting spring axle (1); Spring shaft (1), stop collar (2), fixed axis (5) are fixed together through double-screw bolt (4); Dynamic non-fusion connector axially can stretch and reverse, and side direction can be crooked, can realize transshipping limit function through stop collar (2), spacing core (3).At first confirm the degree of depth and orientation that the spinal column nail is implanted, and the length of dynamic non-fusion connector, on vertebral body, hole, hold and get the spinal column nail, make in its firm embedding vertebral body, use the same method and implant other spinal column nails; Implant and adjust dynamic non-fusion connector to the appropriate location; Be screwed into jackscrew successively, compress dynamic non-fusion connector, realize the dynamic non-converged fixed of system to final locked position.
Claims (3)
1. dynamic non-fusion connector; Form by spring shaft (1), stop collar (2), spacing core (3), double-screw bolt (4), fixed axis (5); It is characterized in that: spring shaft (1) left end designs for polished rod and internal thread through hole is arranged; The right-hand member inner surface has stepped hole, and right-hand member is the ring-spring structure, and there is small sircle hole gapped and junction between adjacent ring; Stop collar (2) outer surface has the conical surface and step cylinder; Left end has 4 places to be uniformly distributed with fluting along the conical surface, and the center is a step through-hole, in stop collar (2), spacing core (3), fixed axis (5) the inserting spring axle (1); Spring shaft (1), stop collar (2), fixed axis (5) are fixed together through double-screw bolt (4); Dynamic non-fusion connector axially can stretch and reverse, and side direction can be crooked, can realize transshipping limit function through stop collar (2), spacing core (3).
2. dynamic non-fusion connector according to claim 1; It is characterized in that described spacing core (3) left end has circular arc chamfering, annular groove; And the annular groove right ends is the conical surface; The left end end face has a word groove, and right-hand member has screw thread, annular groove, step, and spacing core (3) is designed plurality of specifications as required.
3. dynamic non-fusion connector according to claim 1 is characterized in that, described fixed axis (5) is that step is shaft-like, and fixed axis (5) is designed plurality of specifications as required.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102067309A CN101856260B (en) | 2010-06-23 | 2010-06-23 | Dynamic non-fusion connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102067309A CN101856260B (en) | 2010-06-23 | 2010-06-23 | Dynamic non-fusion connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101856260A CN101856260A (en) | 2010-10-13 |
| CN101856260B true CN101856260B (en) | 2012-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102067309A Active CN101856260B (en) | 2010-06-23 | 2010-06-23 | Dynamic non-fusion connector |
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| Country | Link |
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| CN (1) | CN101856260B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101732084A (en) * | 2008-11-06 | 2010-06-16 | 郑诚功 | Minimally invasive intervertebral fusion cage and implanting device |
| CN201692035U (en) * | 2010-06-23 | 2011-01-05 | 北京市富乐科技开发有限公司 | Dynamic non-fusion connector |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003047441A1 (en) * | 2001-12-07 | 2003-06-12 | Mathys Medizinaltechnik Ag | Damping element |
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2010
- 2010-06-23 CN CN2010102067309A patent/CN101856260B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101732084A (en) * | 2008-11-06 | 2010-06-16 | 郑诚功 | Minimally invasive intervertebral fusion cage and implanting device |
| CN201692035U (en) * | 2010-06-23 | 2011-01-05 | 北京市富乐科技开发有限公司 | Dynamic non-fusion connector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101856260A (en) | 2010-10-13 |
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Effective date of registration: 20160217 Address after: 100021 Beijing city Chaoyang District Huawei bohuanhuayuan No. nine building No. 7 803 Patentee after: Hu Huanyu Address before: 101204 West Beijing District of Pinggu City Mafang Industrial Zone No. 50 Patentee before: Beijing Fule Science & Technology Development Co., Ltd. Patentee before: Hu Huanyu |
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Address after: 101204 West Beijing District of Pinggu City Mafang Industrial Zone No. 50 Patentee after: Hu Huanyu Address before: 100021 Beijing city Chaoyang District Huawei bohuanhuayuan No. nine building No. 7 803 Patentee before: Hu Huanyu |
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Effective date of registration: 20210111 Address after: 101204 West Beijing District of Pinggu City Mafang Industrial Zone No. 50 Patentee after: BEIJING FULE SCIENCE & TECHNOLOGY DEVELOPMENT Co.,Ltd. Address before: 101204 West Beijing District of Pinggu City Mafang Industrial Zone No. 50 Patentee before: Hu Huanyu |
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