External fixator for repairing fractures

• US 5,658,283 A
• Filed: 09/17/1996
• Issued: 08/19/1997
• Est. Priority Date: 02/15/1995
• Status: Expired due to Term

• Current Assignee: Acumed Llc (Berkshire Hathaway Incorporated)
• Original Assignee: Randall J. Huebner
• Inventors: Huebner, Randall J.
• Primary Examiner(s): Buiz, Michael
• Assistant Examiner(s): Shai, Daphna
• Application Number:
  US08/715,017
• Time in Patent Office: 336 Days
• Field of Search: 606/54, 606/55, 606/57, 606/59, 606/105, 606/62, 606/67
• US Class Current: 606/57
• CPC Class Codes: A61B 17/60 for external osteosynthesis, e.g. distractors, contractors
• CPC Class Codes: A61B 17/6425 specially adapted to be fitted across a bone joint
• CPC Class Codes: A61B 17/6458 with pin-clamps fixed at ends of connecting element
• CPC Class Codes: A61B 17/7208 Flexible pins, e.g. ENDER pins
• CPC Class Codes: A61B 17/7291 for small bones, e.g. in the foot, ankle, hand or wrist
• CPC Class Codes: A61B 50/00 Containers, covers, furniture or holders specially adapted for surgical or diagnostic appliances or instruments, e.g. sterile covers drapes specially adapted for instruments A61B46/10

Abstract

A fixation device for repairing a fracture of a bone having a medullary canal, where the device includes a radial transcutaneous pin configured to be mounted generally radially to the bone on a first side of the fracture and the radial transcutaneous pin includes an external free end. The device further includes an axial transcutaneous pin configured to enter the bone on a second side of the fracture and extend axially down the medullary canal with the axial transcutaneous pin including an external free end. An external member is configured to extend between the free ends of the pins and secure them relative to each other.

Claims

1. A fixation device for repairing a fracture of a bone having a medullary canal, the device comprising:

a radial transcutaneous pin configured to be mounted generally radially to the bone on a first side of the fracture, the radial transcutaneous pin including an external free end;

an axial transcutaneous pin configured to enter the bone on a second side of the fracture and extend axially down the medullary canal, the axial transcutaneous pin including an external free end; and

an external member configured to extend between the free ends of the pins and secure them relative to each other, and where the axial and radial pins are non-intersecting and are adapted to be coupled to one another subcutaneously through their mutual engagement with the bone only.

2. The fixation device of claim 1, wherein the axial transcutaneous pin includes a generally U-shaped transcutaneous section.

3. The fixation device of claim 1, further comprising a cover substantially enveloping the external member and external free ends of the pins.

4. The fixation device of claim 1, further including a second radial transcutaneous pin.

5. The fixation device of claim 1, wherein the bone is the radius and the fracture is located at the distal end of the radius.

6. The fixation device of claim 5, wherein the axial transcutaneous pin is configured to be installed through the distal end of the radius and extend proximally across the fracture.

7. The fixation device of claim 1, wherein the axial transcutaneous pin is configured to extend through the medullary canal across the fracture.

8. A fixation device use in repairing a fracture of a patient'"'"'s bone, where the bone has a medullary canal, the device comprising:

a first intermedullary portion configured to extend longitudinally through a section of the medullary canal of the bone and span the fracture;

an external member configured to be disposed external to the patient;

a first transcutaneous portion configured to extend from the external member through the bone to the first intermedullary portion on a first side of the fracture; and

a second transcutaneous portion configured to extend between and couple the external member and the bone on a second side of the fracture where the second transcutaneous portion and the first intermedullary portion are non-intersecting and the bone on the second side of the fracture can be manipulated relative to the bone on the first side of the fracture by moving the second transcutaneous portion relative to the first transcutaneous portion when the portions are engaged with the bone.

9. The fixation device of claim 8, wherein the first intermedullary portion takes the form of an intermedullary rod, and the first transcutaneous portion is a pin connected to the rod.

10. The fixation device of claim 8, further including a second intermedullary portion adapted to extend axially down the medullary canal, wherein the second transcutaneous portion is configured to extend fxom the external member through the bone to the second intermedullary portion and the first and second intermedullary portions are non-intersecting.

11. The fixation device of claim 8, wherein the second transcutaneous section includes a radial transcutaneous pin configured to be mounted in the bone generally radially to the medullary canal.

12. The fixation device of claim 8, wherein the external member is articulated to allow the positions of the transcutaneous sections to be adjusted relative to each other.

13. The fixation device of claim 8, wherein the transcutaneous sections, are clamped to the external member.

14. A fixation device for repairing a fracture of a bone having a medullary canal, the device comprising:

a radial transcutaneous pin configured to be mounted generally radially to the bone on a first side of the fracture, the radial transcutaneous pin including an external free end;

an axial transcutaneous pin configured to enter the bone on a second side of the fracture and extend axially down the medullary canal, the axial transcutaneous pin including an external free end, where the radial and axial pins are non-intersecting; and

an external member configured to extend between the free ends of the pins and to secure them in an adjustable orientation relative to each other.

15. The fixation device of claim 14, wherein the external member is articulated to allow the free ends to be manipulated relative to each other to allow the bone on the first side of the fracture to be manipulated relative to the bone on the second side of the fracture.

16. The fixation device of claim 14, further including a second radial transcutaneous pin configured to be mounted generally radially to the bone on the first side of the fracture, the second radial transcutaneous pin including an external free to be secured by the external member.