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US 2016/0100846 A1Published application
Surgical blade for use with an acetabular cup remover to remove bone around acetabular cup
AssigneeStryker Ireland Ltd.
InventorsJulie Motherway, Kevin O'Flynn
Life of this patent
Estimating the term…
Abstract
A surgical blade (180) designed for use with an acetabular cup remover (30). The blade includes a body (182) from which teeth (190) extend distally forward. The body and teeth are disposed around the section of a sphere. On each side of the longitudinal axis of the blade body there is an outer tooth and at least two inner teeth. The teeth are further shaped so that one each side of the longitudinal axis through the blade body there are at least two adjacent inner teeth that have rake surfaces located along axes that, extending from the outer surface of the blade body to the inner surface of the blade body, do not intersect.
Claims25
A blade for use with an acetabular cup remover, said blade including:
- a body, said body having:
- opposed inner and outer surfaces;
- the inner surface being directed towards the acetabular cup against which the blade is placed;
- proximal and distal ends;
- sides that extend between the ends;
- a longitudinal axis that extends between the proximal and distal ends;
- a longitudinal center plane that extends through the longitudinal axis;
- and a lateral axis that extends between the sides and, wherein said body is at least partially curved so that, at least adjacent the distal end of said blade body, both the longitudinal axis and the lateral axis of said blade body are curved;
- a coupling feature attached to the proximal end of the body that cooperates with a complementary coupling feature of the acetabular cup remover so as to removably hold the blade to the acetabular cup remover;
- and
- teeth that project forward the distal end of the blade body, each tooth having:
- an outer surface adjacent the blade body outer surface;
- an inner surface adjacent the blade body inner surface;
- a rake surface;
- a clearance surface and a cutting edge, wherein at least a plurality of teeth are further defined so that the rake surfaces and the clearance surfaces of the teeth meet to define the cutting edges of said teeth and wherein on each side of the longitudinal center plane of the blade body, there is:
- an outer tooth spaced furthest from the longitudinal center plane;
- and
- a plurality of inner teeth spaced closer to the longitudinal center plane, the plurality of inner teeth including:
- at least one inner tooth that has a rake surface that is located on an axis that, extending from the outer surface of the tooth to the inner surface of the tooth, extends away from the longitudinal center plane or at least one inner tooth that has a rake surface that is located on axis that, extending from the outer surface of the tooth to the inner surface of the tooth, extends towards the longitudinal center plane;
- and at least two adjacent inner teeth having rake surfaces located on axes that, extending from the outer surfaces of the teeth to the inner surfaces of the teeth, do not intersect.
17 more elements
2-3. (canceled)
A blade for use with an acetabular cup remover, said blade including:
- a body, said body having:
- opposed inner and outer surfaces;
- the inner surface being directed towards the acetabular cup against which the blade is placed;
- proximal and distal ends;
- sides that extend between the ends;
- a longitudinal axis that extends between the proximal and distal ends;
- a longitudinal center plane that extends through the longitudinal axis;
- and a lateral axis that extends between the sides and, wherein said body is at least partially curved so that, at least adjacent the distal end of said blade body, both the longitudinal axis and the lateral axis of said blade body are curved;
- a coupling feature attached to the proximal end of the body that cooperates with a complementary coupling feature of the acetabular cup remover so as to removably hold the blade to the acetabular cup remover;
- and
- teeth that project forward the distal end of the blade body, each tooth having:
- an outer surface adjacent the blade body outer surface;
- an inner surface adjacent the blade body inner surface;
- a rake surface;
- a clearance surface and a cutting edge, wherein at least a plurality of teeth are further defined so that the rake surfaces and the clearance surfaces of the teeth meet to define the cutting edges of said teeth and wherein on each side of the longitudinal center plane of said blade body, there is:
- an outer tooth spaced furthest from the longitudinal center plane;
- and
- a plurality of inner teeth spaced closer to the longitudinal center plane, said plurality of inner teeth including:
- at least one inner tooth that has a rake surface that is located on an axis that, extending from the outer surface of the tooth to the inner surface of the tooth, extends away from the longitudinal center plane;
- and at least one inner tooth that has a rake surface that is located on axis that, extending from the outer surface of the tooth to the inner surface of the tooth, extends towards the longitudinal center plane.
17 more elements
Dependencies are inferred from the claim text.