RECIPROCATING RASPS FOR USE IN AN ORTHOPAEDIC SURGICAL PROCEDURE

• US 20180193037A1
• Filed: 03/08/2018
• Published: 07/12/2018
• Est. Priority Date: 12/31/2009
• Status: Active Grant

• Current Assignee: Depuy Synthes Products Incorporated (Johnson & Johnson)
• Original Assignee: Depuy Synthes Products Incorporated (Johnson & Johnson)
• Inventors: Anthony, Sarah M., Klotz, Conrad L., Lappin, Kyle E., Flamion, Van A., Surma, Gabriel M., Surma, Joanna L., Iannotti, Joseph P.
• Granted Patent: US 11,160,564 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 17/1659 Surgical rasps, files, planes, or scrapers
• CPC Class Codes: A61B 17/1666 for the acetabulum
• CPC Class Codes: A61B 17/1684 for the shoulder
• CPC Class Codes: A61B 17/1735 for rasps or chisels
• CPC Class Codes: A61B 17/1746 for the acetabulum
• CPC Class Codes: A61B 17/1778 for the shoulder
• CPC Class Codes: A61F 2/34 Acetabular cups
• CPC Class Codes: A61F 2/4081 Glenoid components, e.g. cups

Abstract

Reciprocating rasps for the surgical preparation of the bone prior to the implantation of a glenoid or acetabular component with complex geometry are disclosed. Surgical methods for the use of such reciprocating rasps are also disclosed. Some of the methods include inserting a guide pin into the glenoid of the patient, advancing a reciprocating surgical rasp over the guide pin, reciprocating the surgical rasp so as to abrade bone tissue to form a cavity shaped to receive the glenoid component, and implanting the glenoid component in the cavity.

Claims

1. (canceled)

2. A reciprocating rasp surgical instrument for use in the surgical preparation of a glenoid of a patient prior to implantation of a glenoid prosthesis, the reciprocating rasp surgical instrument comprising:

a shaft having a first end configured to be secured in a chuck of a reciprocating tool, and

a cutting head coupled to a second end of the shaft, the cutting head having (i) a wedge-shaped body extending between a base and an end, the base of the wedge-shaped body including a pair of planar edges and a pair of curved edges joining the planar edges, and (ii) a cutting surface extending from the base to the end of the wedge-shaped body and including a plurality of cutting teeth arranged in a geometry that corresponds with a geometry of the glenoid prosthesis.

3. The reciprocating rasp surgical instrument of claim 2, further comprising a bore extending from an opening in the end of the wedge-shaped body to an opening in the base of the wedge-shaped body.

4. The reciprocating rasp surgical instrument of claim 3, wherein the opening in the end of the wedge-shaped body is formed as a V-shaped notch configured to guide a guide pin into the bore formed in the wedge-shaped body.

5. The reciprocating rasp surgical instrument of claim 3, further comprising an elongated bore extending through the shaft and having a longitudinal axis that extends along a longitudinal axis of the bore in the cutting head.

6. The reciprocating rasp surgical instrument of claim 4, further comprising a window formed in the shaft and open to the elongated bore.

7. The reciprocating rasp surgical instrument of claim 2, wherein the cutting surface includes:

a lead cutting section formed at the end of the wedge-shaped body,

a pair of planar cutting sections extending from the planar edges of the base to the lead cutting section, and

a pair of curved cutting sections extending from the curved edges of the base to the lead cutting section, the curved cutting sections joining the planar cutting sections.

8. The reciprocating rasp surgical instrument of claim 7, wherein the plurality of cutting teeth includes a plurality of curved cutting teeth on each of the curved cutting sections.

9. The reciprocating rasp surgical instrument of claim 2, further comprising a depth stop secured to the cutting head and configured to bottom out on the glenoid of the patient.

10. The reciprocating rasp surgical instrument of claim 9, wherein the depth stop includes a flange extending from the cutting head.

11. A surgical instrument system comprising:

a guide pin configured to be inserted into a glenoid of a patient,

a surgical rasp configured to be advanced along the guide pin, the surgical rasp having a cutting head with (i) a wedge-shaped body extending between a base and an end, the base of the wedge-shaped body and (ii) a cutting surface formed on the wedge-shaped body and including a plurality of cutting teeth arranged in a geometry to surgically prepare a wedge-shaped vault in the glenoid of the patient, and

a glenoid prosthesis having a body sized and shaped to receive a humeral head, a keel extending from the body and having a wedge-shape that corresponds to the wedge-shaped body of the surgical rasp.

12. The reciprocating rasp surgical instrument of claim 11, further comprising a bore extending from an opening in the end of the wedge-shaped body to an opening in the base of the wedge-shaped body, the bore being sized to receive the guide pin.

13. The reciprocating rasp surgical instrument of claim 12, wherein the opening in the end of the wedge-shaped body is formed as a V-shaped notch configured to guide the guide pin into the bore formed in the wedge-shaped body.

14. The reciprocating rasp surgical instrument of claim 12, further comprising an elongated bore extending through the shaft and having a longitudinal axis that extends along a longitudinal axis of the bore in the cutting head, the elongated bore being sized to receive the guide pin.

15. The reciprocating rasp surgical instrument of claim 14, further comprising a window formed in the shaft and open to the elongated bore.

16. The reciprocating rasp surgical instrument of claim 11, wherein the cutting surface includes:

a lead cutting section formed at the end of the wedge-shaped body,

a pair of planar cutting sections extending from the planar edges of the base to the lead cutting section, and

a pair of curved cutting sections extending from the curved edges of the base to the lead cutting section, the curved cutting sections joining the planar cutting sections.

17. The reciprocating rasp surgical instrument of claim 16, wherein the plurality of cutting teeth includes a plurality of curved cutting teeth on each of the curved cutting sections.

18. The reciprocating rasp surgical instrument of claim 11, further comprising a depth stop secured to the cutting head and configured to bottom out on the glenoid of the patient.

19. The reciprocating rasp surgical instrument of claim 18, wherein the depth stop includes a flange extending from the cutting head.