IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0238532
(2008-09-26)
|
등록번호 |
US-8241285
(2012-08-14)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
30 인용 특허 :
46 |
초록
▼
Clamping devices and methods for external fixation systems include a post component having a yaw axis and a clamping system secured to the post component and rotatable about the yaw axis. The clamping system includes a outer jaw and a inner jaw having an inner surface facing the outer jaw. The outer
Clamping devices and methods for external fixation systems include a post component having a yaw axis and a clamping system secured to the post component and rotatable about the yaw axis. The clamping system includes a outer jaw and a inner jaw having an inner surface facing the outer jaw. The outer and inner jaws together form an opening for receiving a fixation element of the external fixation system. The inner jaw and outer jaw have a roll axis alignable with a longitudinal axis of the fixation element. The clamping system and post component are rotatable about the roll axis. The inner jaw also includes a cylindrical outer-facing surface. The devices also include a base component having a cylindrical concave surface having a pitch axis. The concave surface of the base component interfaces with the cylindrical outer facing component on the inner jaw. The outer and inner jaws being rotatable relative to the base and the post component about the pitch axis.
대표청구항
▼
1. A clamping device for an external fixation system, comprising: a first clamping system, a second clamping system, and a post component extending into the first and second clamping system;the first clamping system comprising a first outer jaw;a first inner jaw having an inner surface facing the ou
1. A clamping device for an external fixation system, comprising: a first clamping system, a second clamping system, and a post component extending into the first and second clamping system;the first clamping system comprising a first outer jaw;a first inner jaw having an inner surface facing the outer jaw, the outer and inner jaws together forming an opening for receiving a first fixation element of the external fixation system, the first inner jaw including a substantially cylindrical outer clamp surface having splines formed thereon; anda first base component having a concave surface interfacing with the first inner jaw and an opposing bottom facing surface, the concave surface of the first base component including splines thereon, the splines of the first inner jaw interdigitating with the splines of the first base component;the second clamping system comprising a second outer jaw;a second inner jaw having an inner surface facing the second outer jaw, the second outer and second inner jaws together forming a second opening for receiving a second fixation element of the external fixation system; anda second base component having a concave surface interfacing with the second inner jaw and an opposing bottom facing surface,the concave surface of the first base component facing away from the concave surface of the second base component, and the opposing bottom facing surface of the first component being in selective engagement with the opposing bottom facing surface of the second component. 2. The clamping device of claim 1, further including a bias member biasing the first outer and first inner jaw to an open bar-receiving position. 3. The clamping device of claim 1, wherein the first inner jaw includes a central bore formed therein, the central bore receiving the post component and being shaped to permit articulation relative to the post component in a transverse direction and being shaped to substantially limit articulation relative to the post component in a longitudinal direction. 4. The clamping device of claim 3, wherein the first outer jaw includes a non-symmetrical central bore, the central bore formed therein, the central bore receiving the post component and being shaped to permit a first amount of articulation relative to the post component in a transverse direction and being shaped to permit a second amount of articulation relative to the post component in a longitudinal direction, the amount of permitted articulation in the transverse direction being greater than the amount of permitted articulation in the longitudinal direction. 5. The clamping device of claim 1, comprising a trigger system that releases the first outer and first inner jaw from an open bar-receiving condition to a provisionally locked condition. 6. The clamping device of claim 5, wherein the trigger system comprises a release component and a biasing element that biases the release component toward the provisionally locked condition. 7. The clamping device of claim 6, wherein the release component includes first and second grasping elements connected by a transversely extending bar that interfaces with a biasing element and with the outer jaw. 8. The clamping device of claim 5, wherein the trigger system comprises a release component attached to the first inner jaw, the release component slidingly engaging the first outer jaw to bias the outer jaw to the provisionally locked condition. 9. The clamping device of claim 1, including a tightening component configured to simultaneously compress the first and second clamping systems to securely place the first and second clamping systems in a locked condition. 10. The clamping device of claim 9, wherein the tightening component is a first tightening component associated with the first clamping system, the clamping device further comprising a second tightening component associated with the second clamping system, wherein each of the first and second tightening components are configured such that either tightening component will simultaneously compress the first and second clamping systems to securely place the first and second clamping systems in a locked condition. 11. The clamping device of claim 1, including a spherical portion disposed about the post component, the spherical portion interfacing with the first outer jaw and facing toward the first base member. 12. The clamping device of claim 1, wherein the concave surface of the base component has an axis, and wherein the first inner jaw includes a central bore sized to permit axial translation of the inner jaw along the axis. 13. The clamping device of claim 1, comprising a release slide having an angled surface that interfaces with an angled surface of the first outer jaw, such that translational movement of the release slide in a first direction permits the outer jaw to open and such that translational movement of the release slide in an opposing direction forces the outer jaw to a provisionally locked condition. 14. A clamping device for an external fixation system, comprising: a post component having a yaw axis,a first clamping system secured to the post component and rotatable about the yaw axis, the first clamping system comprising a first outer jaw;a first inner jaw having an inner surface facing the outer jaw, the first outer and first inner jaws together forming an opening for receiving a first fixation element of the external fixation system, the first inner jaw and first outer jaw having a roll axis alignable with a longitudinal axis of the fixation element, the first clamping system and post component being rotatable about the roll axis, the first inner jaw also having a cylindrical outer-facing surface; anda first base component having a cylindrical concave surface having a pitch axis, the concave surface of the first base component interfacing with the cylindrical outer-facing surface on the first inner jaw, the first outer and first inner jaws being rotatable relative to the first base component and the post component about the pitch axis;a second clamping system secured to the post component and rotatable about the yaw axis, the second clamping system having a second outer jaw, a second inner jaw, and a second base component, the first base component having splines that selectively interdigitate with splines of the second base component; anda bias member that biases the first and second base components away from each other. 15. The clamping device of claim 14, including a spherical portion disposed about the post component and interfacing with the first outer jaw, the first outer jaw being articulatable with respect to the spherical portion, the spherical portion having a center point, the pitch axis of the first base component passing through or near to the center point. 16. The clamping device of claim 14, wherein the first outer and first inner jaws are movable between an open bar-receiving position and a clamped, closed-position, the clamping device further comprising a bias member biasing the first outer and first inner jaw to an open bar-receiving position. 17. The clamping device of claim 14, wherein the first inner jaw includes a central bore formed therein, the central bore receiving the post component and being shaped to permit articulation relative to the post component in a transverse direction and being shaped to substantially limit articulation relative to the post component in a longitudinal direction. 18. The clamping device of claim 17, wherein the first outer jaw includes a non-symmetrical central bore, the central bore formed therein, the central bore receiving the post component and being shaped to permit a first amount of articulation relative to the post component in a transverse direction and being shaped to permit a second amount of articulation relative to the post component in a longitudinal direction, the amount of permitted articulation in the transverse direction being greater than the amount of permitted articulation in the longitudinal direction. 19. The clamping device of claim 14, comprising a trigger system that releases the first outer and first inner jaw from an open bar-receiving condition to a provisionally locked condition. 20. The clamping device of claim 19, wherein the trigger system comprises a release component and a biasing element that biases the release component toward the provisionally locked condition. 21. The clamping device of claim 20, wherein the release component includes first and second grasping elements connected by a transversely extending bar that interfaces with a biasing element and with the outer jaw. 22. The clamping device of claim 19, wherein the trigger system comprises a release component attached to the first inner jaw, the release component slidingly engaging the first outer jaw to bias the outer jaw to the provisionally locked condition. 23. The clamping device of claim 14, including a tightening component interfacing with the post component, the tightening component being configured to compress the first clamping system to securely place the first clamping system in a locked condition. 24. The clamping device of claim 14, including a spherical portion disposed about the post component, the spherical portion interfacing with the first outer jaw and facing toward the first base member. 25. The clamping device of claim 14, wherein the concave surface of the base component has an axis, and wherein the first inner jaw includes a central bore sized to permit axial translation of the inner jaw along the axis. 26. The clamping device of claim 14, comprising a release slide having an angled surface that interfaces with an angled surface of the first outer jaw, such that translational movement of the release slide in a first direction permits the outer jaw to open and such that translational movement of the release slide in an opposing direction forces the outer jaw to a provisionally locked condition. 27. The clamping device of claim 14, including a tightening component configured in a manner that an action of tightening the tightening component simultaneously locks both the first and second clamping systems. 28. The clamping device of claim 27, wherein the tightening component is a first tightening component associated with the first clamping system, the clamping device further comprising a second tightening component associated with the second clamping system, wherein each of the first and second tightening components are configured in a manner that an action of tightening one of the tightening components simultaneously locks both the first and second clamping systems. 29. A clamping device for an external fixation system, comprising: a post component having a yaw axis;a first clamping system secured to the post component and rotatable about the yaw axis, the first clamping system comprising a first outer jaw;a first inner jaw having an inner surface facing the outer jaw, the first outer and first inner jaws together forming an opening for receiving a first fixation element of the external fixation system, the first inner jaw and first outer jaw having a roll axis alignable with a longitudinal axis of the fixation element, the first clamping system and post component being rotatable about the roll axis, the first inner jaw also having a cylindrical outer-facing surface; anda first base component having a cylindrical concave surface having a pitch axis, the concave surface of the first base component interfacing with the cylindrical outer-facing surface on the first inner jaw, the first outer and first inner jaws being rotatable relative to the first base component and the post component about the pitch axiswherein the cylindrical surface of the first inner jaw includes splines formed thereon, andwherein the cylindrical concave surface of the first base component includes splines thereon, the splines of the first inner jaw interdigitating with the splines of the first base component. 30. The clamping device of claim 29, wherein the first outer and first inner jaws are movable between an open bar-receiving position and a clamped, closed-position, the clamping device further comprising a bias member biasing the first outer and first inner jaw to an open bar-receiving position. 31. The clamping device of claim 29, wherein the first inner jaw includes a central bore formed therein, the central bore receiving the post component and being shaped to permit articulation relative to the post component in a transverse direction and being shaped to substantially limit articulation relative to the post component in a longitudinal direction. 32. The clamping device of claim 31, wherein the first outer jaw includes a non-symmetrical central bore, the central bore formed therein, the central bore receiving the post component and being shaped to permit a first amount of articulation relative to the post component in a transverse direction and being shaped to permit a second amount of articulation relative to the post component in a longitudinal direction, the amount of permitted articulation in the transverse direction being greater than the amount of permitted articulation in the longitudinal direction. 33. The clamping device of claim 29, comprising a trigger system that releases the first outer and first inner jaw from an open bar-receiving condition to a provisionally locked condition. 34. The clamping device of claim 33, wherein the trigger system comprises a release component and a biasing element that biases the release component toward the provisionally locked condition. 35. The clamping device of claim 34, wherein the release component includes first and second grasping elements connected by a transversely extending bar that interfaces with a biasing element and with the outer jaw. 36. The clamping device of claim 33, wherein the trigger system comprises a release component attached to the first inner jaw, the release component slidingly engaging the first outer jaw to bias the outer jaw to the provisionally locked condition. 37. The clamping device of claim 29, including a tightening component interfacing with the post component, the tightening component being configured to compress the first clamping system to securely place the first clamping system in a locked condition. 38. The clamping device of claim 29, including a spherical portion disposed about the post component, the spherical portion interfacing with the first outer jaw and facing toward the first base member. 39. The clamping device of claim 29, wherein the concave surface of the base component has an axis, and wherein the first inner jaw includes a central bore sized to permit axial translation of the inner jaw along the axis. 40. The clamping device of claim 29, comprising a release slide having an angled surface that interfaces with an angled surface of the first outer jaw, such that translational movement of the release slide in a first direction permits the outer jaw to open and such that translational movement of the release slide in an opposing direction forces the outer jaw to a provisionally locked condition. 41. The clamping device of claim 29, comprising a second clamping system secured to the post component and rotatable about the yaw axis, the second clamping system having a second outer jaw, a second inner jaw, and a second base component, the first base component having splines that selectively interdigitate with splines of the second base component; and a bias member that biases the first and second base components away from each other.
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