Humeral spiral blade
First Claim
Patent Images
1. An implant for a bone said implant comprising:
- a body member having a lateral portion and a medial portion and a helically twisted blade extending along the body and having a longitudinal axis;
said lateral portion having a circumferential collar extending in a plane perpendicular to said longitudinal axis; and
said circumferential collar having an attachment element for attaching a tissue fastener for repairing tissue surrounding the bone, said circumferential collar having a central hole configured with threads to releasably engage a tool for positioning the implant in the bone.
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Accused Products
Abstract
An osteosynthetic implant for use in treating fractures to the head and neck of the humerus. The implant includes a body, a helically twisted blade having an oblate cross section, and a circumferential collar having a plurality of attachment points for sutures.
124 Citations
20 Claims
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1. An implant for a bone said implant comprising:
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a body member having a lateral portion and a medial portion and a helically twisted blade extending along the body and having a longitudinal axis;
said lateral portion having a circumferential collar extending in a plane perpendicular to said longitudinal axis; and
said circumferential collar having an attachment element for attaching a tissue fastener for repairing tissue surrounding the bone, said circumferential collar having a central hole configured with threads to releasably engage a tool for positioning the implant in the bone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
first and second cutting regions; and
a transverse axis, said first and second cutting regions asymmetrically disposed about said transverse axis.
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8. The implant of claim 7 wherein said first and second cutting regions further comprise cutting edges, said cutting edges forming an angle of about thirty degrees to said transverse axis.
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9. The implant of claim 8 wherein said first and second cutting regions further comprise an angled cutting surface.
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10. The implant of claim 9 wherein said angled cutting surfaces form an angle of from about five to sixty degrees with respect to said longitudinal axis.
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11. The implant of claim 1 wherein the lateral portion of the helically twisted blade is twisted about one fourth turn with respect to the medial portion.
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12. An osteosynthetic apparatus for fixing a broken humerus comprising:
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the implant of claim 1;
a securing member comprising an elongated nail having a proximal securing portion configured to occupy an upper portion of the humeral shaft and a distal portion configured to occupy a lower portion of the humeral shaft; and
the proximal securing portion having at least one longitudinal bore configured to accommodate the implant.
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13. The apparatus of claim 12 wherein the circumferential collar includes a plurality of holes suitable for anchoring a suture.
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14. A method for fixing a broken humerus having a head comprising:
implanting the implant of claim 1 in the humerus with the medial portion of the twisted blade inside the head of the humerus.
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15. The method of claim 14 further comprising anchoring soft tissue to the implant utilizing sutures secured to the attachment element.
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16. An implant for a humerus said implant comprising:
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a body member having a lateral portion and a medial portion and a helically twisted blade extending along the body and having a longitudinal axis, and wherein the body member further comprises a central portion between the lateral and medial portions, the central portion having a cross section and a maximum thickness adjacent said longitudinal axis and which gradually tapers to a minimum thickness apart from said longitudinal axis;
said lateral portion having a circumferential collar extending in a plane perpendicular to said longitudinal axis; and
said circumferential collar having an attachment element for attaching a tissue fastener for repairing tissue surrounding the humerus. - View Dependent Claims (17, 18, 19, 20)
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Specification