Oscillating rasp for use in an orthopaedic surgical procedure
First Claim
1. An oscillating surgical rasp for use in the surgical preparation of a glenoid of a patient prior to implantation of an augmented glenoid prosthesis, the oscillating surgical rasp comprising:
- an attachment head configured to be secured in a chuck of an oscillating tool, anda cutting head secured to the attachment head, the cutting head comprising a cutting surface extending posteriorly from a longitudinal axis of the oscillating surgical rasp, the cutting surface having a plurality of cutting teeth arranged in a geometry that, when oscillated along a predetermined path in contact with the glenoid of the patient, corresponds with the geometry of the augmented glenoid prosthesis, wherein;
the plurality of cutting teeth of the cutting head comprises a superior cutting tooth and an inferior cutting tooth that is positioned inferiorly relative to the superior cutting tooth,an anterior end of the superior cutting tooth is spaced apart from an anterior end of the inferior cutting tooth by a first distance, anda posterior end of the superior cutting tooth is spaced apart from a posterior end of the inferior cutting tooth by a second distance that is shorter than the first distance.
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Accused Products
Abstract
Oscillating 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 oscillating rasps are also disclosed. The oscillating rasp includes an attachment head configured to be secured in a chuck of an oscillating tool, and a cutting head secured to the attachment head. The cutting head includes a cutting surface extending posteriorly from the longitudinal axis of the oscillating surgical rasp. The cutting surface has a plurality of cutting teeth arranged in a geometry that, when oscillated along a predetermined path in contact with the glenoid of the patient, corresponds with the geometry of the augmented glenoid prosthesis.
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Citations
20 Claims
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1. An oscillating surgical rasp for use in the surgical preparation of a glenoid of a patient prior to implantation of an augmented glenoid prosthesis, the oscillating surgical rasp comprising:
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an attachment head configured to be secured in a chuck of an oscillating tool, and a cutting head secured to the attachment head, the cutting head comprising a cutting surface extending posteriorly from a longitudinal axis of the oscillating surgical rasp, the cutting surface having a plurality of cutting teeth arranged in a geometry that, when oscillated along a predetermined path in contact with the glenoid of the patient, corresponds with the geometry of the augmented glenoid prosthesis, wherein; the plurality of cutting teeth of the cutting head comprises a superior cutting tooth and an inferior cutting tooth that is positioned inferiorly relative to the superior cutting tooth, an anterior end of the superior cutting tooth is spaced apart from an anterior end of the inferior cutting tooth by a first distance, and a posterior end of the superior cutting tooth is spaced apart from a posterior end of the inferior cutting tooth by a second distance that is shorter than the first distance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An orthopaedic surgical instrument assembly for use in the surgical preparation of a glenoid of a patient prior to implantation of an augmented glenoid prosthesis, the surgical instrument assembly comprising:
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an oscillating surgical rasp comprising (i) an attachment head configured to be secured in a chuck of an oscillating tool, and (ii) a cutting head secured to attachment head, the cutting head comprising a cutting surface extending posteriorly from a longitudinal axis of the oscillating surgical rasp, the cutting surface having a plurality of cutting teeth arranged in a geometry that, when oscillated along a predetermined path in contact with the glenoid of the patient, corresponds with the geometry of the augmented glenoid prosthesis, and a rasp guide having a guide surface configured to guide the oscillating surgical rasp during operation thereof along the predetermined path in contact with the glenoid of the patient and an anchor surface that is opposite the guide surface and configured to be secured to the glenoid of the patient, wherein the guide surface of the rasp guide is concave. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification