Bone implants

Patent metadata

Field	Value
Publication number	US-10179015-B2
Application number	US-201514815900-A
Country	US
Kind code	B2
Filing date	Jul 31, 2015
Priority date	Aug 1, 2014
Publication date	Jan 15, 2019
Grant date	Jan 15, 2019

Abstract

The present disclosure provides various embodiments that may comprise an implant, to an instrument for implantation of the latter and to a method for manufacturing this implant which includes an elongated body between a free end and a head along a longitudinal axis on the one hand and turns of at least one threading on at least one portion of said body in proximity to the free end, along the longitudinal axis on the other hand, characterized in that the body includes a longitudinal internal conduit in at least one portion along the longitudinal axis, obtained by at least one first central machining operation parallel to the longitudinal axis and at least one second machining operation in a so-called transverse plane, not parallel to the longitudinal axis and crossing the wall of the body as far as the longitudinal internal conduit by making windows communicating between said longitudinal internal conduit and the outside of the body while preserving at least one portion of said turns and the wall of the body behind the turns, and preserving non-machined portions on the perimeter of said body.

First claim

The invention claimed is:

1. A bone implant comprising a body elongated along a longitudinal axis between a first end of the body and a second end of the body, the body comprising a rounded exterior surface portion disposed proximal to the first end and having a rounded cross-section transverse to the longitudinal axis;
a head comprising a peripheral lower surface including a spherical portion, the head disposed proximal to the second end of the body;
a bore extending through at least a portion of the body along the longitudinal axis and opening through the first end of the body;
a window disposed along the body and forming an opening extending from the bore through the rounded exterior surface portion, with the opening comprising a sharpened edge configured for cutting bone during rotation of the body about the longitudinal axis; and
a thread winding around at least a portion of the rounded exterior surface portion.

2. A bone implant comprising a body elongated a longitudinal axis between a first end of the body and a second end of the body, the body comprising a rounded exterior surface portion disposed proximal to the first end and having a rounded cross-section transverse to the longitudinal axis;
a head integrally formed with the body and disposed proximal to the second end of the body, the head including a major diameter larger than the rounded cross-section;
a bore extending through at least a portion of the body along the longitudinal axis and opening through the first end of the body;
a window disposed along the body and forming an opening extending from the bore through the rounded exterior surface portion, with the window comprising a cutting edge positioned to engage an adjacent bone during rotation of the body around the longitudinal axis; and
a thread winding around at least a portion of the rounded exterior surface portion with a portion of the thread extending over the window.

3. The implant of claim 2 in which the body has a substantially frustoconical shape.

4. The implant of claim 3 in which the thread has a perimeter that is substantially cylindrical.

5. The implant of claim 2 comprising plural windows aligned along an axis substantially parallel to the longitudinal axis.

6. A bone implant comprising:
a body elongated along a longitudinal axis between a first end of the body and a second end of the body, the body comprising a rounded exterior surface portion disposed proximal to the first end and having a rounded cross-section transverse to the longitudinal axis;
a head integrally formed with the body and disposed proximal to the second end of the body, the head including a major diameter larger than the rounded cross-section;
a bore extending through at least a portion of the body along the longitudinal axis and opening through the first end of the body;
a thread winding around at least a portion of the rounded exterior surface portion of the body; and
a plurality of windows disposed along a portion of the body and forming openings between the thread winding extending from the bore through the rounded exterior surface portion, each window of the plurality of windows incrementally increasing in size from a proximal end to a distal end of the portion of the body.

Assignees

• Ldr Medical

Inventors

• Lavigne Christophe
• Richard Patrick
• Mercier Alexis
• Lequette Samuel

Classifications

• A61B17/0642

  for bones, e.g. for osteosynthesis or connecting tendon to bone · CPC title

• A61B17/8605

  Heads, i.e. proximal ends projecting from bone · CPC title

• A61B17/7098

  wherein the implant is permeable or has openings, e.g. fenestrated screw (hollow surgical screws A61B17/864) · CPC title

• A61B17/864 Primary

  hollow, e.g. with socket or cannulated · CPC title

• A61B17/8625

  Shanks, i.e. parts contacting bone tissue · CPC title