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다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0288454 (2008-10-21) |
등록번호 | US-8911477 (2014-12-16) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
|
인용정보 | 피인용 횟수 : 0 인용 특허 : 288 |
A dynamic fixation medical implant having at least two bone anchors includes a dynamic longitudinal connecting member assembly having the following features: a pair of elongate segments, each segment having at least one and up to a plurality of integral fins axially extending therefrom; an inner cab
A dynamic fixation medical implant having at least two bone anchors includes a dynamic longitudinal connecting member assembly having the following features: a pair of elongate segments, each segment having at least one and up to a plurality of integral fins axially extending therefrom; an inner cable fixed to one of the elongate segments and slidingly received in the other elongate segment; a molded spacer that substantially surrounds the fins and may partially or substantially surround the abutment plates; a bumper; a crimp ring; and optional sleeves having abutment plates and fins for placement between elongate segments.
1. In a medical implant assembly having at least two bone attachment structures cooperating with a longitudinal connecting member, the improvement wherein the longitudinal connecting member comprises: a) first and second rigid segments, each rigid segment having a cylindrical end plate with an enlar
1. In a medical implant assembly having at least two bone attachment structures cooperating with a longitudinal connecting member, the improvement wherein the longitudinal connecting member comprises: a) first and second rigid segments, each rigid segment having a cylindrical end plate with an enlarged radius and an integral fin extending axially therefrom, the fins being in circumferentially spaced and overlapping relationship, the second rigid segment having a through bore extending axially therethrough;b) a single inner core with a first end fixed to the first rigid segment and extending entirely through the through bore of the second rigid segment, the inner core overlapping each of the fins, the inner core being at least somewhat elastic; andc) a molded elastomeric spacer substantially surrounding each end plate, the fins and a portion of the inner core. 2. The improvement of claim 1 wherein the fin of each segment is a first fin and including a second fin on each segment. 3. The improvement of claim 1 further comprising an elastic bumper receiving the inner core through a bumper through bore near a second end of the inner core. 4. The improvement of claim 3 wherein at least one of the elastic bumper and the molded elastomeric spacer is held in a compressed state by a structure fixed to the inner core second end. 5. The improvement of claim 4 wherein the structure fixed to the inner core second end is a crimping ring. 6. The improvement of claim 1 wherein the inner core is pre-tensioned. 7. The improvement of claim 1 further comprising a rigid sleeve disposed between the first and second rigid segments, the sleeve having a lumen extending axially therethrough, the inner core slidingly received entirely through the lumen, the molded elastomeric spacer including first and second portions, the first portion attaching the first rigid segment to the sleeve and the second portion attaching the second rigid segment to the sleeve. 8. The improvement of claim 7 wherein the sleeve has at least one integral fin extending axially therefrom. 9. The improvement of claim 7 wherein the sleeve has at least two integral fins extending from opposite ends of the sleeve. 10. In a medical implant assembly having at least two bone attachment structures cooperating with a longitudinal connecting member, the improvement wherein the longitudinal connecting member comprises: a) first and second rigid elongate segments, the segments aligned along a central axis, each segment having a cylindrical end-plate with at least one integral fin extending axially therefrom and radially from the axis, the fins being in circumferentially spaced, overlapping relation along the axis;b) a single inner cable fixed to the end of the first segment and extending between the fins and entirely through the second segment along the central axis, the inner cable being at least somewhat elastic; andc) a molded elastomeric spacer substantially surrounding each end-plate, each fin and a portion of the inner cable overlapping the fins. 11. The improvement of claim 10 wherein the at least one fin is a plurality of fins. 12. The improvement of claim 10 wherein the at least one fin is at least a pair of fins on each elongate segment, the fins of the first segment disposed between the fins of the second segment. 13. The improvement of claim 12 wherein the fins are in substantially equal spaced relation to one another. 14. The improvement of claim 10 wherein the at least one fin has a concave surface. 15. The improvement of claim 14 wherein the concave surface faces outwardly away from the axis. 16. The improvement of claim 10 wherein the molded elastomeric spacer surrounds each end plate. 17. In a medical implant assembly having at least three bone anchors cooperating with a longitudinal connecting member, the improvement wherein the longitudinal connecting member comprises: a) a rigid first elongate member having a first longitudinal axis, the first elongate member being sized and shaped for attachment to at least one bone anchor, the elongate member having a first end plate and a first curvate fin fixed to the end plate, the curvate fin extending along the first axis and radially outward from the first axis;b) a rigid second elongate member having a second longitudinal axis, the second elongate member being sized and shaped for attachment to at least one bone anchor, the second elongate member having a first axial through bore, a second end plate and a second curvate fin fixed to the second end plate, the second curvate fin extending along the second axis and radially outward from the second axis; the first and second fins being circumferentially spaced from each other;c) a rigid sleeve sized and shaped for attachment to at least one bone anchor, the sleeve disposed between the first and second elongate members, the sleeve having a second axial through bore, third and fourth end plates, a third curvate fin extending from the third plate and a fourth curvate fin extending from the fourth plate;d) a first molded elastomeric spacer surrounding the first and third end plates and holding the first and third fins in substantially spaced relation with one another;e) a second molded elastomeric spacer surrounding the second and fourth end plates and holding the second and fourth fins in substantially spaced relation to one another; andf) a single elastic inner cable with a first end fixed to the first elongate member adjacent to the first end plate and slidingly received through the first and second through bores. 18. The improvement of claim 17 further comprising a) an elastic bumper slidingly received on the inner cable near a second end thereof; andb) a crimping structure abutting the bumper and fixed to the inner cable second end. 19. The improvement of claim 17 wherein the first fin is a plurality of fins and the third fin is a plurality of fins, each first fin being at least partially disposed between a pair of third fins. 20. The improvement of claim 17 where in the second fin is a plurality of fins and the fourth fin is a plurality of fins, each second fin being at least partially disposed between a pair of fourth fins. 21. A medical implant assembly having at least two bone attachment structures cooperating with a longitudinal connecting member, wherein the longitudinal connecting member comprises: a) an anchor member portion having a first rigid segment in locked engagement with one of at least two bone attachment structures, the first rigid segment including a radially extending end plate, the anchor member portion having a single tensionable elastic inner core extension of reduced diameter, the core extension having first and second ends and extending from the first rigid segment end plate along a substantially central axis of the longitudinal connecting member, the core extension first end being fixed to an aperture in the end plate;b) a second rigid segment having a through bore extending entirely therethrough, the core extension being received within the through bore, in slidable relationship therewith and extending completely therethrough, the second rigid segment being in a locked engagement with the other of the at least two bone attachment structures;c) at least one compressible outer member having the core extension extending entirely therethrough, the outer member being positioned between the at least two bone attachment structures, surrounding the end plate and being in compressive engagement with the second rigid segment, the outer member being made of a moldable material;d) at least one elastic bumper positioned around the core extension and in slidable relation therewith, the bumper having non-overlapping compressive engagement with the second rigid segment, the bumper being positioned opposite the outer member; ande) an end ring compressed against the bumper with a non-overlapping engagement and secured to a second end of the core extension, whereby the inner core extension is at least partially tensioned; whereinf) when in use, the core extension is in tension due to the elastic compression of the compressible outer member and the bumper, thereby providing a dynamic stabilization connecting member for the at least two bone attachment structures; and whereing) the anchor member first rigid segment and the second rigid segment have spaced apart and opposed axial extending structure with overlapping compressive engagement on opposite ends of the at least one compressible outer member for torsion and shear control of the second rigid segment with respect to the anchor member. 22. The assembly according to claim 21, wherein a) the compressible outer member overlaps the first rigid segment. 23. The assembly according to claim 21, wherein a) the compressible outer member overlaps the second rigid segment. 24. A medical implant assembly having at least two bone attachment structures cooperating with a longitudinal connecting member, wherein the longitudinal connecting member comprises: a) a first rigid bone attachment portion with first and second ends, the second end having an aperture extending axially therein toward the first end;b) a second rigid bone attachment portion with third and fourth ends and a through bore extending axially entirely therethrough so as to join the third and fourth ends; the second and third ends each include at least one curvate fin extending axially therefrom, the fins being spaced and overlapping with each other;c) an inner core having a body with fifth and sixth ends, the fifth end being received within the aperture and fixed therein, the body extending through the second bone attachment portion through bore such that the sixth end is disposed outside of the fourth end; andd) a compressible molded outer sleeve covering the second and third ends and at least a portion of the body; whereine) the inner core is tensioned such that the outer sleeve is compressed at the second and third ends. 25. The longitudinal connecting member according to claim 24, further comprising: a) a plug end attached to the inner core fifth end; whereinb) the fifth end is fixed within the aperture by a press fit. 26. The longitudinal connecting member according to claim 24, further comprising: a) a threaded annular tap; whereinb) the aperture includes a thread sized and shaped to cooperate with the threaded annular tap so as to fix the fifth end within the aperture. 27. The longitudinal connecting member according to claim 24, wherein: a) the inner core is a cord. 28. The longitudinal connecting member according to claim 24, wherein: a) the inner core is at least partially elastic. 29. The longitudinal connecting member according to claim 24, wherein: a) the connecting member includes a longitudinal axis and the inner core extends along the axis between the fins. 30. A medical implant assembly having at least two bone attachment structures cooperating with a longitudinal connecting member, wherein the longitudinal connecting member comprises: a) a first elongate bone attachment portion with a first integral end plate at one end, the end plate having an aperture extending axially therein, the first portion being attached to at least one bone attachment structure;b) a second elongate bone attachment portion with a second integral end plate and a through bore extending axially entirely therethrough, the second portion being attached to a second bone attachment structure;c) a core member having a core end received within the aperture of the first portion and fixed therein, the core member extending entirely through the through bore of the second bone attachment portion bore;d) an extension extending axially from each endplate;e) a compressible outer sleeve overlapping the extensions from the end plates;f) an end ring received on and fixed to the core member;g) a bumper received on the core member between the second bone attachment portion and the end ring; andh) the core member being tensioned such that the outer sleeve is compressed against the end plates and the bumper is compressed between the end ring and the second bone attachment portion. 31. A medical implant assembly having at least two bone attachment structures cooperating with a longitudinal connecting member, wherein the longitudinal connecting member comprises: a) a first rigid bone attachment portion with first and second ends, the second end having an aperture extending axially therein toward the first end and a structure extending longitudinally outward therefrom;b) a second rigid bone attachment portion with third and fourth ends and a through bore extending axially entirely therethrough so as to join the third and fourth ends;c) an inner core having a body with fifth and sixth ends, the fifth end being received within the aperture and fixed therein and overlapped by the longitudinally extending structure, the body extending through the second bone attachment portion through bore such that the sixth end is disposed outside of the fourth end; andd) a compressible outer sleeve covering the longitudinally extending structure and at least a portion of the body; the second and third ends each include at least one extending structure therefrom, each structure being spaced apart and overlapped by the outer sleeve; whereine) the inner core is tensioned such that the outer sleeve is compressed at the second and third ends. 32. The longitudinal connecting member according to claim 31, wherein: a) the connecting member includes a longitudinal axis and the inner core is flexible.
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