Steven Wesley Ek, 5916 Cedar Point Rd, Durham, NH 03824

6520964, Feb 18, 2003

May 1, 2001

09/846657

Steven J. Tallarida - Mansfield MA
Steven W. Ek - Bolton MA

STD Manufacturing, Inc. - Stoughton MA

A61B 1756

606 71, 623 2021, 623 2018, 623 2014, 606 69

The present invention provides tools and methods for mapping and measuring the articular surface of a joint (or of any bony surface) and for fabricating a prosthetic device based on this recorded data. In one embodiment, once the defect of the chondral surface has been identified, a guide pin is inserted arthroscopically. A fixation screw is driven into the subchondral bone in relation to a reference axis that is approximately central to the defect, the fixation device also serving to define a tangent point to the surrounding articular surface. A further cylindrical proximal extension of the screw that eventually serves as a fixation element for the surface prosthetic is concealed with a cover or plug. The depth positioning of the cover or plug establishes an origin or reference point for all future measuring, cutting, and prosthetic machining operations. A measuring tool having a static post that establishes the axial location of origin is inserted on the reference axis.

6610067, Aug 26, 2003

Dec 17, 2001

10/024077

Steven J. Tallarida - Mansfield MA
Steven W. Ek - Bolton MA

ArthroSurface, Incorporated - Stoughton MA

A61B 1758

606102, 606 79

A generic bone implant, or set of standardized implants, is created based on using a guide device to develop an axis normal to an articular surface of bone and collecting only one or two data points. A generic cutting tool is used to cut the bone to a point where a generic implant can be used. Several improved tools relating to the procedure for using such an implant, as well as methods for using implants consistent with the invention are further described, including: single-axis and biaxial drill guide tools and methods, generic single-axis implant methods and devices, generic biaxial implant methods and devices, tools and methods for holding or delivering an implant, removal or revision tools and methods, digital measuring systems and methods, and set of measuring gauges for determining the appropriate implant dimensions.

6679917, Jan 20, 2004

Jun 4, 2002

10/162533

Steven W. Ek - Bolton MA

ArthroSurface, Incorporated - Stoughton MA

A61F 238

623 2014, 623 2018

An implant for installation into a portion of an articular surface includes a protrusion configured to cover an un-excised portion of articular surface proximate to the implant. Another implant may form a cavity to allow the un-excised portion of articular surface to remodel over a perimeter edge of the implant. The implant may also include indentations such as grooves to promote articular cartilage remodeling over a portion of the load bearing surface of the implant. An elongated or non-round implant is also provided having two opposing concentric arcuate shaped sides, as well as a method to seat such an implant in an articular surface. A method for seating an implant without cutting articular cartilage is also provided.

6746483, Jun 8, 2004

Mar 16, 2000

09/526960

Ray Bojarski - Attleboro MA
Paul Alexander Torrie - Marblehead MA
Fraser Harvie - East Kilbride, GB
Steven Ek - Bolton MA

Smith Nephew, Inc. - Memphis TN

A61F 208

623 1314, 623 1315

Sheaths for implantable fixation devices have a flexible body with a perforated wall, and an interior of the body is sized and shaped to receive the fixation device. Sheaths include a plurality of flexible or inflexible tubes arranged to form a ring, where the central cavity defined by the ring is sized and shaped to receive the fixation device.

7029479, Apr 18, 2006

Feb 6, 2003

10/360228

Steven J. Tallarida - Mansfield MA, US
Steven W. Ek - Bolton MA, US

ArthroSurface, Inc. - Franklin MA

A61B 17/58

606102, 606 79

The present invention provides tools and methods for mapping and measuring the articular surface of a joint (or of any bony surface) and for fabricating a prosthetic device based on this recorded data. In one embodiment, once the defect of the chondral surface has been identified, a guide pin is inserted arthroscopically. A fixation screw is driven into the subchondral bone in relation to a reference axis that is approximately central to the defect, the fixation device also serving to define a tangent point to the surrounding articular surface. A further cylindrical proximal extension of the screw that eventually serves as a fixation element for the surface prosthetic is concealed with a cover or plug. The depth positioning of the cover or plug establishes an origin or reference point for all future measuring, cutting, and prosthetic machining operations. A measuring tool having a static post that establishes the axial location of origin is inserted on the reference axis.

7163541, Jan 16, 2007

Dec 3, 2002

10/308718

Steven Ek - Bolton MA, US

Arthrosurface Incorporated - Stoughton MA

A61B 17/56

606 96

A tibial resurfacing system is provided that includes a drill guide, bone chisel and implant. In one aspect, the system includes a drill guide that includes a targeting ring and a bore section for creating an axis through the tibia to the superior tibial surface in the vicinity of the targeting ring. In another aspect, a bone chisel is provided that includes a bone-cutting end, having a transverse angle creating an elliptical bone-cutting face. In another aspect, an implant is provided that includes an angled bearing element formed of a cylindrical member having a first end defining a load-bearing surface, and a second end. The first end is formed at an angle that creates an elliptical face of the first end.

7311702, Dec 25, 2007

Jan 21, 2003

10/348396

Steven J. Tallarida - Mansfield MA, US
Scott M. Epstein - Natick MA, US
Kenneth Eliasen - Bridgewater MA, US
Steven Ek - Bolton MA, US

STD Manufacturing, Inc. - Stoughton MA

A61B 18/04

606 33, 607 96, 607100, 607101, 607156, 600373, 600427, 600439

A catheter based delivery system may be used for both therapeutic and diagnostic applications. The catheter based delivery system includes a catheter having a distal end. The distal end of the catheter includes several electrodes that can emit a radio frequency waveform, and may receive a signal representative of an impedance of material in the exposed to the radio frequency waveform. The radio frequency waveform may also be applied to ablate specifically targeted material exposed to the radio frequency waveform. The several electrodes may be configured as an antenna.

7407512, Aug 5, 2008

Jun 8, 2004

10/862573

Raymond A. Bojarski - Attleboro MA, US
Paul Alexander Torrie - Marblehead MA, US
Fraser Harvie - Scotland, GB
Steven W. Ek - Bolton MA, US

Smith & Nephew, Inc. - Memphis TN

A61F 2/08

623 1314, 623 1315

Sheaths for implantable fixation devices and methods of using the sheaths are disclosed. Sheaths have a flexible body with a perforated wall, and an interior of the body is sized and shaped to receive the fixation device. Sheaths include a plurality of flexible or inflexible tubes arranged to form a ring, where the central cavity defined by the ring is sized and shaped to receive the fixation device.