US Patent No. 10,111,690

ARTHRODESIS IMPLANT AND BUTTRESSING APPARATUS AND METHOD


Patent No. 10,111,690
Issue Date October 30, 2018
Title Arthrodesis Implant And Buttressing Apparatus And Method
Inventorship Gregory S. Anderson, Sandy, UT (US)
Brock Johnson, Draper, UT (US)
Louis Monaco, Salt Lake City, UT (US)
Assignee Orthopro LLC, Salt Lake City, UT (US)

Claim of US Patent No. 10,111,690

1. A method of arthrodesis, the method comprising:providing an anchor, comprising a monolithic, homogeneously formed structure, comprising
a first end comprising a first prong and a second prong extending longitudinally along a first longitudinal axis, the first prong containing first barbs facing outward in a first radial direction, the second prong containing second barbs facing outward in a second radial direction opposite the first radial direction such that a first plane bisects the first prong and the second prong and the first barbs and the second barbs along the first longitudinal axis, the first prong and the second prong separated by a first open slot, the first open slot having a first mid-plane equally spaced between the first prong and the second prong, the first mid-plane orthogonal to the first plane;
a second end comprising a third prong and a fourth prong extending longitudinally along a second longitudinal axis, the third prong provided with third barbs extending outward therefrom in a third radial direction, the fourth prong containing fourth barbs extending in a fourth radial direction opposite the third radial direction, such that a second plane bisects the third prong and the fourth prong and the third barbs and the fourth barbs along the second longitudinal axis, the third prong and the fourth prong separated by a second open slot, the second open slot having a second mid-plane equally spaced between the third prong and the fourth prong, the second mid-plane orthogonal to the second plane, the second mid-plane rotated 90 degrees about the second longitudinal axis with respect to the first mid-plane, and
a neck, extending longitudinally between the first and second ends, the neck having an engagement region;
accessing a head of a proximal phalangeal joint of a subject;
accessing a base of an intermediate phalangeal joint of the subject;
forming a first interface surface by resecting the head;
forming a second interface surface by resecting the base;
drilling a first pilot in the head through the first interface surface;
drilling a second pilot in the base through the second interface surface;
inserting the first end into one of the first and second pilots;
fitting a buttressing tool to the engagement region, the buttressing tool having a handle portion, an anchor receiving portion, and a corner joining the handle portion and the anchor receiving portion such that the anchor receiving portion is disposed at an oblique angle with respect to the handle portion, wherein the anchor receiving portion of the buttressing tool has a thickness, the thickness being less than a pitch between adjacent first barbs along the first prong; and
placing the first and second interface surfaces in contact by urging the second end into the other of the first and second pilots, wherein the buttressing tool resists insertion of the first end farther into the one of the first and second pilots during the urging of the second end into the other of the first and second pilots.