Reciprocating rasps for use in an orthopaedic surgical procedure

• US 8,506,569 B2
• Filed: 11/30/2010
• Issued: 08/13/2013
• Est. Priority Date: 12/31/2009
• Status: Active Grant

• Current Assignee: Depuy Synthes Products Incorporated (Johnson & Johnson)
• Original Assignee: DePuy Synthes Products LLC (Johnson & Johnson)
• Inventors: Keefer, Ryan C., Anthony, Sarah M., Klotz, Conrad L., Lappin, Kyle E., Flamion, Van A., Caywood, James A., Amaral, Francisco A., Fortin, Michael J., Surma, Gabriel M., Surma, Joanna L.
• Primary Examiner(s): Truong, Kevin T
• Assistant Examiner(s): KAMIKAWA, TRACY L
• Application Number:
  US12/956,914
• Publication Number:
  US 20110213372A1
• Time in Patent Office: 987 Days
• Field of Search: 606 79- 81, 606/84, 606/85, 606/167, 606/170, 606/171, 606/177, 407/29.1, 407/29.14, 407/65, 451/179, 451/358, 451/359
• US Class Current: 606/85
• CPC Class Codes: A61B 17/16 Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans arthroscopic bone cutters A61B17/320016; dental implant drills potentially for other surgical use A61C8/0089; bone grinders A61F2/4644, A22C17/06; A61B17/1662 takes precedence over all other subgroups except A61B17/17
• CPC Class Codes: A61B 17/1604 Chisels; Rongeurs; Punches; Stamps
• CPC Class Codes: A61B 17/1613 Component parts
• CPC Class Codes: A61B 17/1615 Drill bits, i.e. rotating tools extending from a handpiece to contact the worked material
• CPC Class Codes: A61B 17/1617 with mobile or detachable parts
• CPC Class Codes: A61B 17/162 Chucks or tool parts which are to be held in a chuck
• CPC Class Codes: A61B 17/1659 Surgical rasps, files, planes, or scrapers
• CPC Class Codes: A61B 17/1662 for particular parts of the body
• CPC Class Codes: A61B 17/1664 for the hip
• CPC Class Codes: A61B 17/1666 for the acetabulum
• CPC Class Codes: A61B 17/1668 for the upper femur A61B17/164 takes precedence
• 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: A61B 17/32 Surgical cutting instruments A61B18/042 takes precedence; suture cutters A61B17/0467; instruments for ligaturing or cutting A61B17/128; instruments for rupturing the amniotic membrane A61B17/4208; specially adapted knives for eye surgery A61F9/0133
• CPC Class Codes: A61B 17/32002 with continuously rotating, oscillating or reciprocating cutting instruments
• CPC Class Codes: A61B 2017/320004 abrasive
• CPC Class Codes: A61B 2017/320008 Scrapers
• CPC Class Codes: A61F 2/34 Acetabular cups
• CPC Class Codes: A61F 2/4081 : Glenoid components, e.g. cups
• CPC Class Codes: A61F 2/4684 : Trial or dummy prostheses
• CPC Class Codes: A61F 2002/30736 : Augments or augmentation pieces, e.g. wedges or blocks for bridging a bone defect

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. A reciprocating rasp for use in the surgical preparation of an acetabulum includes a shaft having a first end configured to be secured in a chuck of a reciprocating tool, and a cutting head secured to a second end of the shaft. The cutting head includes a cutting surface having a plurality of cutting teeth arranged in a geometry that corresponds with a geometry of the acetabular component, and an alignment guide that is devoid of cutting teeth and configured to cooperate with a complementary alignment guide of an acetabular trial instrument when the cutting head is secured to the second end of the shaft.

Claims

1. A reciprocating rasp surgical instrument for use in the surgical preparation of an acetabulum of a patient prior to implantation of a prosthetic acetabular component, the reciprocating rasp comprising:

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

a cutting head secured to a second end of the shaft, the cutting head comprising (i) a cutting surface having a plurality of cutting teeth arranged in a geometry that corresponds with a geometry of the acetabular component, and (ii) an alignment guide that is devoid of cutting teeth and configured to cooperate with a complementary alignment guide of an acetabular trial instrument when the cutting head is secured to the second end of the shaft, wherein the cutting head is half-hemispherically shaped and comprises (i) a lateral surface, (ii) a posterior surface extending medially from the lateral surface, both the lateral surface and the posterior surface being devoid of cutting teeth, and (iii) a curved medial cutting surface that mates with both the lateral surface and the posterior surface, and the alignment guide comprises an elongated groove formed in the posterior surface of the cutting head.

2. The reciprocating rasp surgical instrument of claim 1, wherein the complementary alignment guide of the acetabular trial instrument includes a tongue, and wherein the elongated groove is configured to receive the tongue of the acetabular trial instrument.

3. The reciprocating rasp surgical instrument of claim 1, wherein the shaft is detachable from the cutting head.