# US 10,478,200 B2 · Glenoid resurfacing system and method

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- Number: US 10,478,200 B2
- Document ID: US10478200B2
- Status: Granted
- Kind: B2
- Application number: 15/606,643
- Filed: 2017-05-26
- Published: 2018-05-17
- Granted: 2019-11-19
- Earliest claimed: 2009-04-17
- Assignees: Arthrosurface Incorporated
- Applicants: Arthrosurface Incorporated
- Inventors: George Sikora; Steven W. Ek
- Web page: https://patentgrep.com/patent/US10478200B2

## CPC

- A61B 17/1684: {for the shoulder}
- A61F 2/4081: {Glenoid components, e.g. cups}
- A61F 2002/30233: {Stepped cylinders, i.e. having discrete diameter changes}
- A61F 2002/30818: {castellated or crenellated}
- A61F 2002/30879: {Ribs}
- A61F 2002/30881: {Circumferential ribs, flanges or fins}
- A61F 2002/30884: {Fins or wings, e.g. longitudinal wings for preventing rotation within the bone cavity}
- A61F 2230/0069: cylindrical
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)

## Abstract

The present disclosure relates to a system and method for repairing an articular surface. A guide pin may be secured to an articular surface of a glenoid, wherein the guide pin defines a working axis and the working axis is positioned at an angle α relative to the articular surface, wherein angle α is less than or equal to 90 degrees. An excision device may be advanced over the guide pin, wherein the excision device includes a cannulated shaft and at least one cutter, wherein the at least one cutter is generally aligned in a single plane. A generally hemi-spherical excision site may be formed with the excision device within the articular surface of the glenoid.

## Claims

### Claim 1

A method for repairing a defect on a portion of an articular surface of a patient's glenoid, said method comprising:
advancing an excision device along a working axis and said working axis is positioned at an angle α relative to the articular surface, wherein angle α is less than or equal to 90 degrees, wherein said excision device includes a shaft and at least one cutter extending radially outwardly from said shaft, wherein said at least one cutter is generally aligned in a single plane extending along a longitudinal axis of said shaft; and
rotating said excision device about said working axis to form a generally hemi-spherical excision site within the articular surface of the glenoid.

### Claim 2 (depends on 1)

The method of claim 1, wherein said excision device is configured to be disposed at said angle α relative to the articular surface, wherein 90 degrees≥α≥45 degrees.

### Claim 3 (depends on 1)

The method of claim 1, further comprising:
securing a guide pin to said articular surface of said glenoid proximate to said defect, wherein said guide pin defines said working axis; and
advancing an excision device over said guide pin.

### Claim 4 (depends on 1)

The method of claim 1, wherein said defect is disposed proximate to a perimeter of said articular surface and wherein said excision site extends to said perimeter.

### Claim 5 (depends on 4)

The method of claim 4, wherein said defect comprises a missing portion of said perimeter of said articular surface.

### Claim 6 (depends on 1)

The method of claim 1, wherein said at least one cutter includes a first cutter and a second cutter, which extend generally radially outwardly from the shaft at an angle of approximately 180 degrees from each other.

### Claim 7 (depends on 1)

The method of claim 1, wherein said at least one cutter has a cross-sectional thickness of 0.5 mm to 3.0 mm.

### Claim 8

A method for repairing a defect on a portion of an articular surface of a patient's glenoid, said method comprising:
advancing an excision device along a working axis and said working axis is positioned at an angle α relative to the articular surface, wherein angle α is selected to avoid contact with a corresponding humerous, wherein said excision device includes a shaft and at least one cutter extending radially outwardly from said shaft, wherein said at least one cutter is generally aligned in a single plane extending along a longitudinal axis of said shaft; and
rotating said excision device about said working axis to form a generally hemi-spherical excision site within the articular surface of the glenoid.

### Claim 9

A system for repairing a defect on a portion of an articular surface of a patient's glenoid, said system comprising:
an excision device including:
a shaft configured to be advanced along a working axis, and
at least one cutter configured to form a generally hemispherical excision site in said glenoid about said working axis, wherein said at least one cutter has a cross-sectional thickness of 0.5 mm to 3.0 mm and said at least one cutter includes a cutting surface having a generally arcuate shape sweeping towards a proximal end of said shaft; and
an implant including a load bearing surface and a bone facing surface, wherein said load bearing surface exhibits a contour substantially corresponding to the contour of the articular surface and said generally hemi-spherical bone facing surface is configured to be received in said generally hemispherical excision site.

### Claim 10 (depends on 9)

The system of claim 9, further comprising a guide pin configured to be secured into bone beneath the articular surface of the glenoid, wherein said guide pin is configured to be disposed at an angle α relative to said articular surface, wherein angle α is <90 degrees.

### Claim 11 (depends on 9)

The system of claim 9, further comprising a guide pin configured to be secured into bone beneath the articular surface of the glenoid, wherein said guide pin is configured to be disposed at an angle α relative to said articular surface, wherein 90 degrees≥α≥45 degrees.

### Claim 12 (depends on 9)

The system of claim 9, wherein said at least one cutter includes a first cutter and a second cutter, wherein said first and second cutters extend generally radially outwardly from said cannulated shaft at an angle approximately 180 degrees from each other.

### Claim 13 (depends on 9)

The system of claim 9, wherein an overall radius Re of said at least one cutter defines a radius of said excision site created by said excision device.

### Claim 14 (depends on 13)

The system of claim 13, wherein said overall radius Re substantially corresponds to a radius Ri of said implant.

### Claim 15 (depends on 9)

The system of claim 9, wherein a depth D of said at least one cutter defines a height of said excision site created by said excision device.

### Claim 16 (depends on 15)

The system of claim 15, wherein said depth D substantially corresponds to a height H of said implant.

### Claim 17 (depends on 9)

The system of claim 9, wherein said load bearing surface comprises a beveled region disposed about a perimeter of said load bearing surface.

### Claim 18 (depends on 9)

The system of claim 9, wherein said bone facing surface comprises at least one lip, protrusion and/or rib configured to increase a mechanical connection between said implant and bone within said excision site.

### Claim 19 (depends on 9)

The system of claim 9, wherein said implant comprises at least one keel extending generally outwardly from said bone facing surface.

### Claim 20 (depends on 19)

The system of claim 19, wherein said at least one keel includes a protrusion disposed about a distal end of a base region.

### Claim 21 (depends on 1)

The method of claim 1, wherein said excision device is configured to be disposed at said angle α relative to the articular surface, wherein angle α is <90 degrees.