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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) |
|
출원번호 | US-0482388 (2009-06-10) |
등록번호 | US-8287539 (2012-10-16) |
발명자 / 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 | 피인용 횟수 : 22 인용 특허 : 520 |
A bone fixation device is provided with an elongate body having a longitudinal axis and having a first state in which at least a portion of the body is flexible and a second state in which the body is generally rigid, an actuateable gripper disposed at a distal location on the elongated body, and an
A bone fixation device is provided with an elongate body having a longitudinal axis and having a first state in which at least a portion of the body is flexible and a second state in which the body is generally rigid, an actuateable gripper disposed at a distal location on the elongated body, and an actuator operably connected to the gripper to deploy the gripper from a retracted configuration to an expanded configuration. Methods of repairing a fracture of a bone are also disclosed. One such method comprises inserting a bone fixation device into an intramedullary space of the bone to place at least a portion of an elongate body of the fixation device in a flexible state on one side of the fracture and at least a portion of a hub on another side of the fracture, and operating an actuator to deploy at least one gripper of the fixation device to engage an inner surface of the intramedullary space to anchor the fixation device to the bone.
1. A bone fixation device comprising: an elongate body having a longitudinal axis and a flexible-to-rigid portion, the flexible-to-rigid portion being flexible in a first state and being generally rigid in a second state which allows the elongate body to go between a flexible state and a rigid state
1. A bone fixation device comprising: an elongate body having a longitudinal axis and a flexible-to-rigid portion, the flexible-to-rigid portion being flexible in a first state and being generally rigid in a second state which allows the elongate body to go between a flexible state and a rigid state;an actuatable bone engaging mechanism disposed within the elongate body, wherein the bone engaging mechanism comprises a gripper having at least one bendable member such that as the gripper is actuated, the bendable member pivots away from the longitudinal axis of the elongate body and the gripper is deployed from a retracted configuration to an engaged configuration; andan actuator operably connected to the bone engaging mechanism to actuate the bone engaging mechanism from a disengaged configuration to the engaged configuration, wherein the actuator comprises a first ramped surface that is slideably coupled to an interior surface of the bendable member of the gripper, wherein proximally moving the first ramped surface of the actuator causes the first ramped surface to slideably engage the interior surface of said bendable member at an angle thereby pivoting the bendable member of the gripper away from the longitudinal axis away from the elongate body to deploy the bone engaging mechanism into the engaged configuration. 2. The bone fixation device of claim 1 wherein the actuator is operably connected to the elongate body to change the elongate body from its flexible state to its rigid state. 3. The bone fixation device of claim 1 wherein the actuator is rotatable with respect to the bone engaging mechanism. 4. The bone fixation device of claim 1, the elongate body further comprising a drive member positioned proximally to the flexible-to-rigid portion of the elongate body and threadably engaged with the actuator. 5. The bone fixation device of claim 4 wherein the actuator, having a first interface surface, is disposed at least partially within the flexible-to-rigid portion of the elongate body such that the first interface surface is distal to the flexible-to-rigid portion of the elongate body. 6. The bone fixation device of claim 5, wherein by rotating the drive member, the first interface surface of the actuator and the drive member are drawn together thereby applying a compressive force to at least a portion of the elongate body along the longitudinal axis changing the elongate body from its flexible state to its rigid state. 7. The bone fixation device of claim 1 wherein the elongate body changes from its flexible state to its rigid state when a compressive force is applied to at least a portion of the elongate body along the longitudinal axis. 8. The bone fixation device of claim 1 wherein the flexible-to-rigid portion of the elongate body defines at least one cut having a thickness that is disposed at least partially around the circumference of the elongate body, and wherein the elongate body changes from its flexible state to its rigid state when the thickness of at least a portion of the cut is reduced. 9. The bone fixation device of claim 1 wherein the flexible-to-rigid portion of the elongate body is disposed at a location on the elongate body proximal to the bone engaging mechanism. 10. The bone fixation device of claim 1 wherein the flexible-to-rigid portion of the elongate body is disposed at a location on the elongate body distal to the bone engaging mechanism. 11. The bone fixation device of claim 1, wherein the actuator is a guidewire and the elongate body defines a cannula, wherein the cannula is sized and configured to receive the guidewire. 12. The bone fixation device of claim 11, wherein the guidewire comprises a first guidewire surface at the distal end of the guidewire and the guidewire is disposed at least partially within the flexible-to-rigid portion of the elongate body such that the first guidewire surface is distal to the flexible-to-rigid portion of the elongate body. 13. The bone fixation device of claim 12, the elongate body further comprising a drive member positioned proximally to the flexible-to-rigid portion of the elongate body and threadably engaged with the guidewire. 14. The bone fixation device of claim 13, wherein by rotating the drive member, the first guidewire surface and the drive member are drawn together thereby applying a compressive force to at least a portion of the elongate body along the longitudinal axis changing the elongate body from its flexible state to its rigid state. 15. The bone fixation device of claim 1 wherein the gripper comprises more than one bendable member, such that as the gripper is actuated each member pivots away from the longitudinal axis. 16. The bone fixation device of claim 1, the elongate body further comprising a drive member positioned proximally to the gripper and threadably engaged with the actuator. 17. The bone fixation device of claim 16, wherein by rotating the drive member, the first ramped surface of the actuator and the drive member are drawn together, such that the first ramped surface moves against the bendable member thereby pivoting the bendable member of the gripper away from the longitudinal axis. 18. The bone fixation device of claim 1, wherein the gripper is a first gripper disposed at a distal location within the elongate body, andthe bone engaging mechanism further comprising a second gripper, the second gripper is disposed at a proximal location within the elongate body,wherein the second gripper comprises at least one bendable member, the bendable member of the second gripper pivoting outside and away from the longitudinal axis of the elongate body when the second gripper is actuated. 19. The bone fixation device of claim 18, the elongate body further comprising a drive member and a second interface surface, wherein the drive member is coupled to the second gripper and the second interface surface is positioned distally to the second gripper. 20. The bone fixation device of claim 19, wherein by rotating the drive member a first distance the drive member moves the second gripper against the second interface surface, thereby pivoting the bendable member of the second gripper away from the longitudinal axis. 21. The bone fixation device of claim 20, wherein by rotating the drive member a second distance, the drive member moves the second gripper toward the proximal end of the device without further pivoting the bendable member of the second gripper away from the longitudinal axis. 22. The bone fixation device of claim 21, wherein the first gripper and the second gripper are drawn toward one another, thereby approximating a fracture in a bone. 23. The bone fixation device of claim 18 wherein each of the bendable members extends toward the distal end of the elongate body. 24. The bone fixation device of claim 18 wherein the flexible-to-rigid portion of the elongate body is disposed at a location on the elongate body distal to both the first and second grippers. 25. The bone fixation device of claim 24, the elongate body further comprising a drive member positioned proximally to the flexible-to-rigid portion of the elongate body and threadably engaged with the actuator. 26. The bone fixation device of claim 18 wherein the flexible-to-rigid portion of the elongate body is disposed at a location on the elongate body proximal to the first gripper and distal to the second gripper.
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