US 11,304,816 B2Granted

Glenoid bone graft retention plate

AssigneeBrent Andrew Ponce

InventorsBrent Andrew Ponce, Eugene Willis Brabston, Amit Mukesh Momaya

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Abstract

A bone graft retention plate for implantation into a human glenoid and provides stabilization and compression of bony graft material is disclosed. The plate includes channels or apertures for suture or polymer retention cerclage that exhibit curved, smooth surfaces within the plate to allow the retention cerclage to pass through the plate while limiting friction and thus protecting the integrity of the retention means. The plate also includes surface features, such as spikes and posts, to provide further stabilization and implantation positioning. The plate features result in the distribution of forces across the surface area of a bone graft and achieve satisfactory compression of the bone graft against the glenoid without using fixation screws. An associated implantation technique uses a cerclage of suture or tape to bind the implant within the glenoid and may be employed in both open and arthroscopic surgical procedures.

Claims21

Dependent claims

A bone graft retention plate for compressing bone graft material against a target glenoid area, comprising:

a. a rigid plate body having an upper and lower surface, said rigid plate body having a generally rectangular shape;
b. a recessed portion in said upper surface defining a suture anchoring path disposed generally within the center of said rigid plate body, wherein said suture anchoring path includes two separate downward descending passageways extending from said upper surface to said lower surface;
c. wherein said two separate downward descending passageways form in said lower surface at least one post depending downward from said lower surface for positioning said rigid plate body onto said bone graft material;
d. an anchoring suture positioned through said suture anchoring path and adapted to form a cerclage around a portion of human bone for securing said retention plate and bone graft material against said glenoid area;
and
e. wherein said rigid plate body further defines a first recessed portion in said upper surface configured to receive a tool and positioned substantially at the center of said upper surface, wherein said first recessed portion is connected to said two separate downward descending passageways, and wherein said two separate downward descending passageways are connected within said rigid plate body via a slot recessed in said upper surface.

3 more elements

A bone graft retention plate, comprising:

a. a rigid plate body having upper and lower surfaces and bounded by generally perpendicular sides;
b. a pair of smooth walled anchor passageways disposed within said rigid plate body and connecting said upper and lower surfaces, said pair of smooth walled anchor passageways including lower portions depending downward from said lower surface to form at least one hollow positioning post;
c. an anchoring suture positioned within said pair of smooth walled anchor passageways and configured to form a cerclage within a portion of glenoid bone;
d. wherein said air of smooth walled anchor passageways are configured to reduce friction of said anchoring suture when pulled therethrough;
e. a plurality of spikes depending downward from said lower surface of said rigid plate body for provisional fixation against a shaped mass of glenoid suitable bone graft material;
and
f. wherein said rigid plate body further defines a first recessed portion in said upper surface configured to receive a tool and positioned substantially at the center of said upper surface, wherein said first recessed portion is connected to said pair of smooth walled anchor passageways, and wherein said pair of smooth walled anchor passageways are connected within said rigid plate body via a slot recessed in said upper surface.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/006,370Filed 28 Aug 2020 · us provisional application
Priority: 16 Oct 2019
Published: US 2021/0113343 A122 Apr 2021
Granted: 19 Apr 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

A61F 2/4081
For shoulders: glenoid components, e.g. cups
A61F 2/2846
Bones: support means for bone substitute or for bone graft implants, e.g. membranes or plates for covering bone defects
A61F 2002/285
Support means for bone substitute or for bone graft implants, e.g. membranes or plates for covering bone defects: fixation appliances for…
A61F 2002/30461
Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements: sutured, ligatured or stitched

Family

Application62/916,135Us provisional application · filed 16 Oct 2019
US 2021/0113343 A1Pre-grant publication · published 22 Apr 2021
US 11,304,816 B2This patent

From the US filing history. Foreign family members aren’t listed.

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