Pedicle screw having a removable rod coupling
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61B-017/70
A61B-017/68
A61B-017/56
출원번호
US-0017023
(2016-02-05)
등록번호
US-9526527
(2016-12-27)
발명자
/ 주소
Zhang, Hong
Sucato, Dan
출원인 / 주소
Globus Medical, Inc.
인용정보
피인용 횟수 :
0인용 특허 :
83
초록▼
The present invention provides a pedicle screw for spinal fixation having a bone fastener portion a permanent rod coupling, a breakaway portion connected to the permanent rod coupling and a temporary rod coupling. A permanent rod can be positioned in the permanent rod coupling and a temporary rod ca
The present invention provides a pedicle screw for spinal fixation having a bone fastener portion a permanent rod coupling, a breakaway portion connected to the permanent rod coupling and a temporary rod coupling. A permanent rod can be positioned in the permanent rod coupling and a temporary rod can be positioned in the temporary rod coupling and when the temporary rod is not needed the temporary rod coupling can be removed by separation at a breakaway portion.
대표청구항▼
1. A pedicle screw for spinal fixation comprising: a bone fastener portion, wherein the bone fastener portion is at least partially threaded;a permanent rod coupling comprising:a bottom surface connected to the bone fastener portion, a middle section positioned between the bottom surface and a top s
1. A pedicle screw for spinal fixation comprising: a bone fastener portion, wherein the bone fastener portion is at least partially threaded;a permanent rod coupling comprising:a bottom surface connected to the bone fastener portion, a middle section positioned between the bottom surface and a top surface, a lateral rod opening in a portion of the middle section adapted to receive a permanent rod, a threaded bore that extends from the top surface into the lateral rod opening, a permanent rod fastener mated to fit the threaded bore to extend into the lateral rod opening, wherein the permanent rod fastener can engage a permanent rod positioned in the lateral rod opening, and a transition region on a portion of the top surface;a breakaway portion in the transition region;a temporary rod coupling connected to the transition region, wherein the temporary rod coupling comprises a temporary rod channel adapted to receive a temporary rod, an upper threaded opening that extends into the temporary rod channel, and an upper rod fastener mated to the upper threaded opening, wherein the upper rod fastener can engage the temporary rod positioned in the temporary rod channel;wherein the permanent rod is positioned in the lateral rod opening and secured by the permanent rod fastener, wherein the permanent rod can be inserted into the lateral rod opening along a direction which is transverse to a longitudinal axis of the permanent rod and transverse to a longitudinal axis of the bone fastener portion, and the temporary rod is temporarily positioned in the temporary rod channel and secured by the upper rod fastener and when the temporary rod is not needed the temporary rod coupling can be removed at the transition region by separation at the breakaway portion to leave the top surface. 2. The screw of claim 1, wherein the permanent rod fastener, the upper rod fastener or both are threaded. 3. The screw of claim 1, wherein the lateral rod opening and the temporary rod channel are generally perpendicular. 4. The screw of claim 1, wherein the temporary rod channel and the bone fastener portion are generally parallel. 5. The screw of claim 1, wherein the lateral rod opening and the bone fastener portion are generally perpendicular. 6. The screw of claim 1, wherein the permanent rod fastener, the upper rod fastener or both further comprise a locking pin to prevent movement. 7. The screw of claim 1, wherein the bone fastener is permanently attached to the permanent rod coupling. 8. The screw of claim 1, wherein the bone fastener is semi-permanently attached to the permanent rod coupling to allow the permanent rod coupling to be positioned at a variable angle relative to the bone fastener. 9. A method of spinal fixation using pedicle screws comprising the steps of: fastening two or more pedicle screws into two or more vertebra, wherein the each of the two or more pedicle screws comprise:a bone fastener portion;a permanent rod coupling comprising a bottom surface connected to the bone fastener portion, a middle section positioned between the bottom surface and a top surface, a lateral rod opening in a portion of the middle section adapted to receive a permanent rod, a threaded bore that extends from the top surface into the lateral rod opening, a permanent rod fastener mated to the threaded bore to extend into the lateral rod opening, wherein the permanent rod fastener can engage a permanent rod positioned in the lateral rod opening, and a transition region on a portion of the top surface; a breakaway portion in the transition region;a temporary rod coupling connected to the transition region, wherein the temporary rod coupling comprises a temporary rod channel adapted to receive a temporary rod, an upper threaded opening that extends into the temporary rod channel, and an upper rod fastener mated to the upper threaded opening, wherein the upper rod fastener can engage the temporary rod positioned in the temporary rod channel;interconnecting the two or more pedicle screws by securing the permanent rod in the lateral rod opening of at least two of the two or more pedicle screws, wherein the permanent rod can be inserted into the lateral rod opening along a direction which is transverse to a longitudinal axis of the permanent rod and transverse to a longitudinal axis of the bone fastener portion, securing the temporary rod in the temporary rod channel of at least two of the two or more pedicle screws, or both; and removing the temporary rod from the temporary rod channel. 10. The method of claim 9, further comprising the step of breaking the temporary rod coupling at the breakaway portion of the transition region to leave the top surface. 11. The method of claim 9, wherein the permanent rod fastener, the upper rod fastener or both engage the temporary, permanent or both rods. 12. The method of claim 9, wherein the lateral rod opening and the temporary rod channel are generally perpendicular. 13. The method of claim 9, wherein the temporary rod channel and the bone fastener portion are generally parallel. 14. The method of claim 9, wherein the lateral rod opening and the bone fastener portion are generally perpendicular. 15. The method of claim 9, wherein the permanent rod fastener, the upper rod fastener or both further comprise a locking pin to prevent movement. 16. The method of claim 9, wherein the bone fastener is permanently attached to the permanent rod coupling. 17. The method of claim 9, wherein the bone fastener is semi-permanently attached to the permanent rod coupling to allow the permanent rod coupling to be positioned at a variable angle relative to the bone fastener. 18. A pedicle screw kit for spinal fixation comprising: two or more pedicle screws, wherein each of the two or more pedicle screws comprise:a bone fastener portion, wherein the bone fastener portion is at least partially threaded;a permanent rod coupling comprising a bottom surface connected to the bone fastener portion, a middle section positioned between the bottom surface and a top surface, a lateral rod opening in a portion of the middle section adapted to receive a permanent rod, a threaded bore that extends from the top surface into the lateral rod opening, a permanent rod fastener mated to fit the threaded bore to extend into the lateral rod opening, wherein the permanent rod fastener can engage a permanent rod positioned in the lateral rod opening, and a transition region on a portion of the top surface;a breakaway portion in the transition region; a temporary rod coupling connected to the transition region, wherein the temporary rod coupling comprises a temporary rod channel adapted to receive a temporary rod, an upper threaded opening that extends into the temporary rod channel, and an upper rod fastener mated to the upper threaded opening, wherein the upper rod fastener can engage the temporary rod positioned in the temporary rod channel;wherein the permanent rod is positioned in the lateral rod opening and secured by the permanent rod fastener, wherein the permanent rod can be inserted into the lateral rod opening along a direction which is transverse to a longitudinal axis of the permanent rod and transverse to a longitudinal axis of the bone fastener portion, and the temporary rod is temporarily positioned in the temporary rod channel and secured by the upper rod fastener and when the temporary rod is not needed the temporary rod coupling can be removed at the transition region by separation at the breakaway portion to leave the top surface. 19. The kit of claim 18, further comprising a breakaway tool adapted to fit the temporary rod coupling to break off the temporary rod coupling.
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이 특허에 인용된 특허 (83)
Ralph, James D.; Tatar, Stephen L.; Troxell, Thomas N., Adjustable bone plate.
Von Hoff Daniel D. (San Antonio TX) Kuhn John G. (San Antonio TX) Leighton Paul W. (Thiensdille WI) Wakeman Howard M. (Thiensdille WI), Intramedullary catheter.
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