Crimping tool

Patent metadata

Field	Value
Publication number	US-9532824-B2
Application number	US-201213628343-A
Country	US
Kind code	B2
Filing date	Sep 27, 2012
Priority date	Sep 28, 2011
Publication date	Jan 3, 2017
Grant date	Jan 3, 2017

Abstract

A crimping tool for producing a polyaxial bone anchoring device ( 1, 1′ ) is provided. The crimping tool includes at least one tip holder having a crimping tip and an inclined passage and an actuating member having at least an inclined leg, wherein the inclination of the inclined passage corresponds to the inclination of the inclined leg.

First claim

What is claimed is:

1. A crimping tool for assembling a polyaxial bone anchoring device, the crimping tool comprising:
a tip holder having an inclined passage and comprising a crimping tip;
an actuating member having an inclined leg; and
a tip guide being fixedly mounted with respect to the actuating member,
wherein the tip holder is movably guided by the tip guide,
wherein the inclination of the inclined passage corresponds to the inclination of the inclined leg, and
wherein the actuating member is configured to move between a first position and a second position, and the inclined leg extends farther into or farther through the tip guide in the second position than in the first position.

2. The crimping tool according to claim 1 , wherein the inclined passage is cylindrical.

3. The crimping tool according to claim 1 , further comprising two tip holders each having the inclined passage and comprising the crimping tip.

4. The crimping tool according to claim 3 , wherein the actuating member has two inclined legs.

5. The crimping tool according to claim 3 , wherein the crimping tips point at each other.

6. The crimping tool according to claim 3 , wherein the inclined passages are in line with the inclined legs.

7. The crimping tool according to claim 3 , further comprising a plurality of tip guides fixedly mounted with respect to the actuating member,
wherein the tip holders are movably guided by the tip guides such that the tip holders are configured to move towards each other for crimping a bone anchoring device.

8. The crimping tool according to claim 7 , wherein the inclined legs are movably guided by the tip guides such that the inclined legs actuate the tip holders.

9. The crimping tool according to claim 3 , wherein the crimping tips are positioned within the tip holders by a press-fit arrangement.

10. The crimping tool according to claim 1 , wherein movement of the tip holder is actuated by the actuating member.

11. The crimping tool according to claim 1 , wherein the actuating member is actuated by a lever.

12. The crimping tool according to claim 1 , further comprising a receiving part holder for supporting a receiving part of a bone anchoring device.

13. The crimping tool according to claim 1 , further comprising a shaft holder for supporting a shaft of a bone anchoring device.

14. The crimping tool according to claim 1 , wherein the inclined passage extends in a first direction,
wherein the tip holder is configured to move in a second direction, and
wherein an angle between the first direction and the second direction is less than 90°.

15. The crimping tool according to claim 1 , further comprising a holder comprising a positioning pin extending in a first direction,
wherein the crimping tip is configured to move along a plane in a second direction transverse to the first direction, and
wherein the positioning pin extends through the plane on which the crimping tip moves.

16. The crimping tool according to claim 15 , wherein the holder further comprises second and third positioning pins each extending in the first direction and being offset from the positioning pin.

17. The crimping tool according to claim 16 , wherein the positioning pin, the second positioning pin, and third positioning pin are arranged in a triangle shape.

18. The crimping tool according to claim 1 , further comprising a lever configured to actuate the actuating member,
wherein a free end of the inclined leg is a different distance from an end of the inclined passage in the second position than in the first position.

19. The crimping tool according to claim 1 , wherein the inclined leg extends farther into or farther through the inclined passage in the second position than in the first position.

20. The crimping tool according to claim 1 , wherein the tip guide comprises a passage, the tip holder being arranged in the passage of the tip guide.

21. The crimping tool according to claim 20 , wherein the passage of the tip guide extends in a first direction,
wherein the tip guide further comprises a second passage crossing the passage, and
wherein the inclined leg extends at least partially into the second passage.

22. A crimping tool for assembling a polyaxial bone anchoring device, the crimping tool comprising:
a frame;
a plurality of tip holders mounted to the frame, each of the tip holders comprising a crimping tip, the crimping tips being movable in a first direction from a first position wherein the crimping tips are spaced apart from each other to a second position wherein the crimping tips are spaced closer to each other than in the first position;
an actuating member mounted to the frame and being movable in a second direction transverse to the first direction, the actuating member configured to engage the tip holders to move the crimping tips from the first position to the second position; and
a holder mounted to the frame, the holder comprising a positioning pin having an axis extending in a third direction transverse to the first and second directions and being configured to hold a polyaxial bone anchoring device between the crimping tips,
wherein the crimping tips are arranged on a plane to be pointing at each other, the plane extending in the first and second directions,
wherein the positioning pin extends through the plane in the third direction, and
wherein the crimping tips are closer to the positioning pin in the second position than in the first position.

23. The crimping tool according to claim 22 , wherein the positioning pin is arranged equidistant from the crimping tips.

Assignees

• Biedermann Technologies Gmbh

Inventors

• Biedermann Lutz
• Pohl Gerhard

Classifications

• A61B17/7037

  wherein pivoting is blocked when the rod is clamped · CPC title

• A61B17/8863 Primary

  Apparatus for shaping or cutting osteosynthesis equipment by medical personnel · CPC title

• A61B17/56 Primary

  Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor · CPC title

• B21D3/00

  Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts (straightening of well casings in situ E21B; {straightening rails or rail joints E01B31/08}) · CPC title

• B21D53/24

  nuts or like thread-engaging members · CPC title