Claims
- 1. A fixture mount for disposition between the adjacent end of a rotatable member and the adjacent end of an aligned implant and for transmitting there between torque of a magnitude less than a damaging torque that would cause damage to the implant, said fixture mount comprising:
an elongate body having a first end portion for engaging the adjacent end of the rotatable member and a second end portion for engaging the adjacent end of the implant; a first mating element on said body for releasably engaging one of the adjacent ends, said first mating element engaging said one end and transmitting torque applied by the rotatable member when the applied torque is less than a first predetermined value, and disengaging from said one end and ceasing to transmit torque when the applied torque exceeds said first predetermined value, said first predetermined value being less than the implant-damaging torque.
- 2. The fixture mount of claim 1 further comprising:
a second mating element on said body for releasably engaging the other one of said adjacent ends, said second mating element engaging said other end and transmitting torque applied by the rotatable member when the applied torque is less than a second predetermined value, and disengaging from said other end and ceasing to transmit torque when the applied torque exceeds said second predetermined value, said second predetermined value being higher than said first predetermined value and less than the implant-damaging torque.
- 3. The fixture mount of claim 2 wherein said first mating element is on said first end portion of said body and releasably engages the adjacent end of the rotatable member and said second mating element is on said second end portion of said body and releasably engages the adjacent end of the implant.
- 4. The fixture mount of claim 2 wherein said second predetermined torque is at least 30% higher than said first predetermined torque.
- 5. The fixture mount of claim 1 wherein said first mating element comprises a socket, and wherein said socket deforms to the extent that it disengages from said one end and ceases to transmit torque when said first predetermined torque is applied.
- 6. The fixture mount of claim 1 wherein said first mating element comprises an extending portion, and where said extending portion deforms to the extent that it disengages from said one end and ceases to transmit torque when said first predetermined torque is applied.
- 7. The fixture mount of claim 5 wherein said socket comprises a recess having a polygonal shape in cross section when torque less than said first predetermined torque is applied.
- 8. The fixture mount of claim 5 wherein said socket comprises an array of recesses.
- 9. The fixture mount of claim 1 wherein said first mating element comprises a socket having a frustoconical shaped inner surface.
- 10. The fixture mount of claim 1 wherein said first mating element comprises an extending portion having a frustoconical shaped outer surface.
- 11. The fixture mount of claim 1 wherein said first mating element comprises an array of extending portions that deform when said first predetermined torque is applied.
- 12. The fixture mount of claim 8 wherein the rotatable member includes a segment that is received within said socket, and wherein said recesses of said socket have a depth more than one and a half times as long as the segment of the rotatable member that is received within said socket.
- 13. The fixture mount of claim 1 wherein said first predetermined torque is less than 55% of the damaging torque.
- 14. A fixture mount for transmitting torque between the end of a rotatable member and the end of an aligned implant and limiting the transmitted torque to a value that is less than a damaging torque that would cause damage to the implant, said fixture mount comprising:
an elongate body having an end portion for engaging the aligned end of the rotatable member and an end portion for engaging the aligned end of the implant; a first of said end portions being deformable to releasably engage one of the adjacent ends, said deformable end portion engaging said one end and transmitting torque applied by the rotatable member when the applied torque is less than a first predetermined value that is less than the damaging torque, and disengaging from said one end and ceasing to transmit torque when the applied torque exceeds said first predetermined value.
- 15. The fixture mount of claim 14 where said deformable end portion undergoes elastic deformation upon application of said first predetermined torque.
- 16. The fixture mount of claim 15 wherein said deformable end portion is made of a material having an elongation percentage of at least 50 and a modulus of elasticity less than 45 Gpa.
- 17. The fixture mount of claim 14 wherein the second of said end portions is deformable to releasably engage the other one of the adjacent ends, said second end portion engaging said other one end and transmitting applied torque when the applied torque is less than a second predetermined value, and disengaging from said other end and ceasing to transmit torque when the applied torque exceeds said second predetermined value, said second predetermined value being greater than said first predetermined value by at least 30% and being less than the damaging torque.
- 18. The fixture mount of claim 17 wherein said elongate body is made of a plastic having an elongation percentage greater than 60 and a modulus of elasticity less than 10 Gpa.
- 19. A fixture mount for engagement with a rotatable member of a drive tool and the coronal end of an implant for transmitting to the implant torque of a magnitude that is less than a damaging torque that would cause damage to the implant, said fixture mount comprising:
an elongate body having a first end portion for engaging the rotatable member and a second end portion for engaging the coronal end of the implant; a first mating element on said first end portion of said body for releasably interconnecting with a first corresponding mating element on the rotatable member; a second mating element on said second end portion of said body for releasably interconnecting with a second corresponding mating element on the coronal end of the implant; at least one of said end portions of said body being made from a material having an elongation percentage of at least 50 and being configured to deform to the extent that it disengages from its corresponding mating element and ceases to transmit torque when a torque applied to said body by the rotatable member exceeds a first predetermined torque.
- 20. The fixture mount of claim 19 wherein said first and second end portions are each made from a material having an elongation percentage of at least 50; and
wherein the other of said end portions of said body is configured to transmit to the implant torque applied to said body by the rotatable member when the torque is less than a second predetermined torque that is greater than said first predetermined torque, and to deform to the extent that it disengages from its corresponding mating element and ceases to transmit torque when the torque applied to said body exceeds said second predetermined torque.
- 21. The fixture mount of claim 19 wherein said first end portion is made of a material having an elongation percentage greater than 60 and a modulus of elasticity less than 10 Gpa.
- 22. The fixture mount of claim 21 wherein said entire body is made of plastic.
- 23. The fixture mount of claim 21 wherein said mating element on said first end portion of said body comprises a socket for receiving and matingly engaging with at least one extension of the corresponding mating element on the rotatable member.
- 24. The fixture mount of claim 23 wherein said socket comprises a single recess having a noncircular cross section.
- 25. The fixture mount of claim 23 wherein said socket comprises an array of recesses.
- 26. The fixture mount of claim 25 wherein at least one of said recesses in said array is a slotted opening.
- 27. The fixture mount of claim 21 wherein said mating element on said first end portion of said body comprises at least one extending member for matingly engaging the corresponding mating element on the rotatable member.
- 28. The fixture mount of claim 25 wherein said recesses of said array have a depth of at least one and one half times the length of the extensions of the corresponding mating element on the rotatable member.
- 29. A fixture mount for engagement with a rotatable member of a drive tool and the coronal end of an implant for transmitting to the implant torque that is applied by the rotatable member, said fixture mount comprising:
an elongate body having a central axis and first end portion for engaging the rotatable member and a second end portion for engaging the coronal end of the implant; a first mating element on said first end portion of said body for releasably interconnecting with a first corresponding mating element on the rotatable member; a second mating element on said second end portion of said body for releasably interconnecting with a second corresponding mating element on the coronal end of the implant; said first mating element comprising a non planar surface disposed about said axis and adapted to engage a correspondingly shaped nonplanar surface on the rotatable member, and to transmit to the implant torque applied to said body by the rotatable member when the torque is less than a first predetermined torque and to slide against the nonplanar surface of the rotatable member and cease to transmit torque when the applied torque exceeds said first predetermined torque.
- 30. The fixture mount of claim 29 wherein said first mating element comprises a socket having a frustoconical shaped inner surface for engaging the rotatable member.
- 31. The fixture mount of claim 29 wherein said first mating element comprises an extending member having a frustoconical shaped outer surface for engaging the rotatable member.
- 32. The fixture mount of claim 29 wherein said first mating element comprises an extending member having a generally cylindrical outer surface for engaging the rotatable member.
- 33. The fixture mount of claim 29 wherein said first mating element comprises a socket having a generally cylindrical inner surface for engaging the rotatable member.
- 34. The fixture mount of claim 29 wherein said second mating element deforms upon application of a second predetermined torque that is different than said first predetermined torque and, upon deformation, disengages from said second corresponding mating element on the implant.
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application claims benefit of priority of U.S. Provisional Application Serial No. 60/322,620, filed Sep. 26, 2001.
Provisional Applications (1)
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Number |
Date |
Country |
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60322620 |
Sep 2001 |
US |