Threaded insert for implant
AssigneeHowmedica Osteonics Corp.
InventorsAlvin Perez, Philip Harris Frank
Life of this patent
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Abstract
Disclosed herein are implants with threaded inserts and methods for attaching the same to the implants. The threaded insert may define a first external dimension and include an internally threaded hole to receive a fastener. The implant may include a receiving hole with a proximal portion having a proximal diameter and a distal portion having a distal diameter. The distal diameter may be greater than the proximal diameter and substantial the same as the first dimension of the insert to secure the insert in the receiving hole. A method of attaching a threaded insert to a receiving hole of an implant with an insertion tool is also disclosed.
Claims20
An implant comprising:
- a body having a hole extending therethrough along a first longitudinal axis, the hole having a distal portion with a distal diameter and a proximal portion with a proximal diameter, the distal diameter being greater than the proximal diameter;
- and
- an insert configured to be housed within the hole of the body, the insert having a proximal face and a distal face with an external wall extending therebetween, an aperture extending from the proximal face to the distal face along a second longitudinal axis, the aperture having internal threads configured to threadingly engage a fastener,
- wherein at least a first dimension of the external wall measured normal to the hole is greater than the proximal diameter and substantially the same as the distal diameter such that the insert when housed with the hole of the body is located in the distal portion.
An implant comprising:
- a body having at least one throughbore extending along a first longitudinal axis, the throughbore having a proximal recess with a first diameter and a distal recess with a second diameter greater than the first diameter;
- an insert having a proximal face and a distal face with an external wall extending therebetween, the insert having an aperture extending from the proximal face to the distal face along a second longitudinal axis, the aperture having internal threads configured to threadingly engage a fastener,
- wherein at least a first dimension of the external wall measured normal to the throughbore is greater than the first diameter and substantially the same as the second diameter, and
- wherein the insert when housed with the throughbore of the body is located entirely within the distal recess such that both the proximal and distal faces of the insert are located within the distal recess.
A method of attaching an insert to an implant body, the insert having a proximal face and a distal face with an external wall extending therebetween, a first hole extending from the proximal face to the distal face along a first longitudinal axis, the first hole having internal threads to receive and threadingly engage with a fastener, the implant body having a receiving hole extending along a second longitudinal axis, the second hole having a distal portion with a distal diameter and a proximal portion with a proximal diameter, the distal diameter being greater than the proximal diameter, wherein at least a first dimension of the external wall measured normal to the first hole is greater than the proximal diameter and substantially the same as the distal diameter, wherein a lip separates the proximal portion from the distal portion, the method comprising the steps of:
- placing the insert at a distal end of a receiving hole in the implant body;
- placing an insertion tool through the receiving hole and threadingly engaging a distal end of an insertion tool with the insert, the insertion tool having external threads to threadingly engage with the internal threads of the insertion tool;
- and
- advancing the insert in the distal portion by rotating the insertion tool in a first direction until the proximal face of the insert contacts the lip.
Dependencies are inferred from the claim text.