Balloon compressor for internal fixation of bone fractures

• US 5,423,850 A
• Filed: 11/17/1993
• Issued: 06/13/1995
• Est. Priority Date: 10/01/1993
• Status: Expired due to Term

• Current Assignee: Medtronic Spine LLC (Medtronic Plc)
• Original Assignee: Berger J. Lee
• Inventors: Berger, J. Lee
• Primary Examiner(s): Pellegrino, Stephen C.
• Assistant Examiner(s): Lewis, William W.
• Application Number:
  US08/153,030
• Time in Patent Office: 573 Days
• Field of Search: 606/191, 606/192, 606/194, 606/195, 606/60-62, 604/95-104, 604/164, 128/DIG. 20
• US Class Current: 606/192
• CPC Class Codes: A61B 17/7225 for bone compression
• CPC Class Codes: A61B 17/7266 with fingers moving radially outwardly
• CPC Class Codes: A61B 17/7275 with expanding cylindrical parts
• CPC Class Codes: A61B 2017/00557 inflatable A61B2017/22051 takes precedence

Abstract

The present invention is directed toward a method for performing an internal fixation of fractures of tubular bones using a balloon catheter fixation device which is guided and transported through the medullary canal and fracture site of the bone by a plurality of guide wires mounted in said balloon catheter fixation device and once placed in position in the bone inflated inside the bone and tightened by applying pressure on the catheter outside of the bone to apply a compression force across the fracture site enhancing the stability of the fractured bone and promoting osseous healing.

Claims

1. A method of setting a fractured bone by compression comprising the steps of:

a) cutting an aperture into one portion of the fractured bone away from the site of the fracture allowing communication with the medullary canal of the bone;

b) inserting a balloon catheter device and catheter guide wire means through the aperture cut in the bone into the medullar cavity of the bone;

c) transporting the balloon catheter in the medullary canal of the bone past the fracture site by use of the catheter guide wire means to a point distal from the fractured site;

d) inflating the balloon of the balloon catheter device to its maximum diameter so that the balloon catheter device is held securely in place by the positive pressure of the balloon applied to the intramedullary walls of the bone; and

e) tensioning the attached catheter with the fixed balloon in place by securing the catheter under tension to holding means to align the fracture and compress the proximal and distal portions of the fractured bone together.

2. The method of claim 1 including the step of;

f) securing the catheter firmly to the bone at the insertion site with a fastener device.

3. The method of claim 2 wherein said securing step uses a screw as the securing device.

4. The method of claim 2 wherein said securing step uses a bolt as the securing device.

5. The method of claim 2 wherein said securing step uses a post as the securing device.

6. The method of claim 1 wherein said cutting step uses an bone awe to cut the aperture.

7. The method of claim 1 wherein said cutting step uses a bone drill to cut the aperture.

8. An assembly for setting a fractured bone comprising a balloon catheter with tubing, said balloon catheter defining an inflation section which inflates when said balloon catheter is pressurized and a plurality of throughgoing lumens, a guide wire mounted in each of said lumens, said inflation section being inflated in a fractured bone portion to fixedly engage said bone segment and anchor means adapted mounted in another fractured bone portion distal from said fractured bone portion, said anchor means being secured to said catheter tubing to hold said balloon catheter in a tensioned condition which provides compression on the fracture site of fractured bone portions.

9. The assembly of claim 8 including a calibrated force measuring device secured to said tubing to measure the compression force on said balloon catheter.

10. The assembly of claim 8 including a pressure monitoring means connected to said balloon catheter to measure the pressure of the inflated balloon of said balloon catheter.

11. The assembly of claim 8 wherein said balloon catheter is a plastic extruded material.

12. The assembly of claim 11 wherein said catheter tubing is elastic and constructed of plastic.

13. The assembly of claim 8 wherein said holding means is a hollow post with holding means.

14. The assembly of claim 8 wherein said balloon portion of said balloon catheter has an outer wall which is ridged.

15. The assembly of claim 8 wherein said balloon portion of said balloon catheter has an outer wall which is smooth.

16. The assembly of claim 8 wherein said balloon portion of said balloon catheter has an outer wall which is fluted.

17. The assembly of claim 8 wherein said balloon catheter defines two lumens.

18. The assembly of claim 8 wherein said balloon catheter defines at a least three lumens.

19. The assembly of claim 8 wherein said guide wires are removably mounted in said lumens.

20. The assembly of claim 8 wherein said guide wires are secured in said lumens.