Chondral defect repair

• US 8,251,998 B2
• Filed: 02/12/2008
• Issued: 08/28/2012
• Est. Priority Date: 08/16/2006
• Status: Active Grant

• Current Assignee: Biomet Manufacturing, LLC (Zimmer Biomet Holdings, Inc.)
• Original Assignee: Biomet Sports Medicine LLC (Zimmer Biomet Holdings, Inc.)
• Inventors: Hoeppner, Jacy C., Stone, Kevin T.
• Primary Examiner(s): Truong, Kevin T
• Assistant Examiner(s): Chang, Olivia C
• Application Number:
  US12/029,861
• Publication Number:
  US 20080132932A1
• Time in Patent Office: 1,659 Days
• Field of Search: 606 92- 95, 606/177, 606/185, 128/898
• US Class Current: 606/79
• CPC Class Codes: A61B 17/1604 Chisels; Rongeurs; Punches; Stamps
• CPC Class Codes: A61B 17/320016 Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes A61B10/0233, A61B17/29, A61B17/3207 take precedence
• CPC Class Codes: A61B 17/3472 for bones, e.g. intraosseus injections
• CPC Class Codes: A61B 17/3496 Protecting sleeves or inner probes; Retractable tips for protecting body piercing guide needles A61M25/0612
• CPC Class Codes: A61B 2017/00969 used for transplantation

Abstract

A tissue repair device. The tissue repair device includes a tubular shaft having a longitudinal bore for delivering biological material to a soft tissue defect, and an awl having a distal end configured for microfracturing bone underlying the defect. The tubular shaft and the awl are movable relative to one another such that the awl is at least partially positioned within the longitudinal bore of the tubular shaft.

Claims

1. A method of repairing a chondral defect of a bone, the method comprising:

engaging a distal end of a delivery tube to the defect;

positioning only a distal tip of an awl outside the distal end of the delivery tube, the awl remaining in a longitudinal inner bore of the delivery tube;

microfracturing the bone with the distal tip of the awl;

positioning the distal tip of the awl into the delivery tube; and

delivering biological material into the defect through a longitudinal passage formed between an outer surface of the awl in the delivery tube and an inner surface of the inner bore of the delivery tube while the awl remains in the delivery tube.

2. The method of claim 1, wherein the awl has a D-shaped cross-section and the inner bore has a circular cross-section, such that the longitudinal passage is formed between the D-shaped cross-section of the awl and the circular cross-section of the inner bore of the delivery tube.

3. A method of repairing a chondral defect of a joint bone, the method comprising:

making an arthroscopic incision to the joint bone;

exposing a chondral defect;

engaging a distal tip of a delivery tube of a tissue repair device to the defect;

exposing only a distal tip of an awl coupled to the tissue repair device outside the distal tip of the delivery tube and into the joint bone with the awl remaining in an inner bore of the delivery tube;

microfracturing the bone underlying the defect with the distal tip of the awl;

enclosing the distal tip of the awl into the inner bore of the delivery tube;

delivering biological material through a longitudinal passage defined between an inner surface of the delivery tube and an outer surface of the awl with the awl in the inner bore of the delivery tube;

removing the delivery tube from the incision; and

closing the incision.

4. The method of claim 3, further comprising delivering biological material into the delivery tube through an access port communicating with the delivery tube.

5. The method of claim 3, wherein exposing the distal tip of the awl coupled to the tissue repair device outside the distal tip of the delivery tube includes moving a slider coupled to the awl in a forward position.

6. The method of claim 5, wherein enclosing the distal tip of the awl into the delivery tube includes moving a slider coupled to the awl to a rearward position and retracting the distal tip of the awl into the delivery tube.

7. The method of claim 3, wherein exposing the distal tip of the awl coupled to the tissue repair device outside the distal tip of the delivery tube includes moving a slider coupled to the delivery tube in a rearward position.

8. The method of claim 3, further comprising removing tissue from the defect.

9. The method of claim 3, further comprising harvesting autologous material from the patient.

10. The method of claim 3, wherein the awl has a D-shaped cross-section and the inner bore has a circular cross-section, such that the passage is formed between the D-shaped cross-section of the awl and the circular cross-section of the inner bore of the delivery tube.

11. A method of repairing a chondral defect of a bone, the method comprising:

exposing a chondral defect;

engaging a distal end of a delivery tube to the defect;

moving a slider coupled to an awl to extend a distal tip of the awl beyond the distal end of the delivery tube to microfracture the bone with the distal tip of the awl with the awl remaining in the delivery tube;

moving the slider to retract the distal tip of the awl into the delivery tube; and

delivering biological material to the defect through a longitudinal passage formed between an outer surface of the awl and an inner surface of the delivery tube while the awl is in the delivery tube.

12. The method of claim 11, further comprising making an arthroscopic incision to the chondral defect;

removing the delivery tube from the incision; and

closing the incision.

13. The method of claim 11, further comprising delivering biological material into the delivery tube through an access port communicating with the delivery tube.

14. The method of claim 13, further comprising coupling a delivery device to the access port to deliver the biological material.

15. The method of claim 11, wherein the passage is formed between an outer longitudinal channel defined by the awl and the inner bore of the delivery tube.

16. The method of claim 11, wherein the awl has a D-shaped cross-section and the delivery tube has a circular cross-section such that the passage is formed between the D-shaped cross-section of the awl and the circular cross-section of the inner bore of the delivery tube.

17. The method of claim 11, wherein moving the slider includes moving the slider toward the distal end of the delivery tube to extend the distal tip of the awl beyond the distal end of the delivery tube and moving the slider proximally relative to the delivery tube to retract the distal tip of the awl into the delivery tube.