KEVIN A MANSMANN, MD
Medical Practice at Lancaster Ave, Paoli, PA

6530956, Mar 11, 2003

Sep 10, 1999

09/393522

Kevin A. Mansmann - Paoli PA 19301

A61F 230

623 1811

A load-sharing resorbable scaffold is used to help transplanted chondrocytes or other cells generate new cartilage in a damaged joint such as a knee, hip, or shoulder. These scaffolds use two distinct matrix materials. One is a relatively stiff matrix material, designed to withstand and resist a compressive articulating load placed on the joint during the convalescent period, shortly after surgery. Due to the requirement for relatively high stiffness, this material must be denser and have less pore space than other matrices, so it will not be able to support highly rapid cell proliferation and cartilage secretion. The second material comprises a more open and porous matrix, designed to promote maximal rapid generation of new cartilage. In one preferred geometric arrangement, the stiffer matrix material is used to provide an outer rim and one or more internal runners, all of which can distribute a compressive load between them. The rim and runners create a cluster of internal cell-growing compartments, which are filled with the porous and open matrix material to encourage rapid cell reproduction and cartilage generation.

6629997, Oct 7, 2003

Mar 27, 2001

09/818811

Kevin A. Mansmann - Paoli PA 19301

A61F 208

623 1412

A device for surgical implantation to replace damaged tissue in a joint (such as a meniscus in a knee) is created from a hydrogel that is reinforced by a three-dimensional flexible fibrous mesh. In a meniscal implant, the mesh is exposed at one or more locations around the periphery, to provide anchoring attachments that can be sutured, pinned, or otherwise securely affixed to tissue that surrounds the implant. The fibrous mesh should extend throughout most of the thickness of the hydrogel, to create an “interpenetrating network” (IPN) of fibers modelled after certain types of natural body tissues. Articulating surfaces which will rub and slide against cartilage should be coated with a hydrogel layer that is completely smooth and nonabrasive, and made of a material that remains constantly wet. This composite structure provides a meniscal implant with improved strength, performance, and wettability compared to implants of the prior art. This type of implant may also be useful in repairing other joints, such as shoulders, wrists, ankles, or elbows, and in repairing injured or diseased hands, fingers, feet, or toes.

2004013, Jul 8, 2004

Oct 2, 2003

10/677444

Kevin Mansmann - Paoli PA, US

A61F002/28

623/014120, 623/023510, 623/023500

A permanent non-resorbable implant allows surgical replacement of cartilage in articulating joints, using a hydrogel material (such as a synthetic polyacrylonitrile polymer) reinforced by a flexible fibrous matrix. Articulating hydrogel surface(s) are chemically treated to provide a negative electrical charge that emulates the negative charge of natural cartilage, and also can be treated with halogenating, cross-linking, or other chemical agents for greater strength. For meniscal-type implants, the reinforcing matrix can extend out from the peripheral rim of the hydrogel, to allow secure anchoring to soft tissue such as a joint capsule. For bone-anchored implants, a porous anchoring layer enables tissue ingrowth, and a non-planer perforated layer can provide a supportive interface between the hard anchoring material and the softer hydrogel material.

2005028, Dec 29, 2005

Apr 14, 2005

11/105677

Kevin Mansmann - Paoli PA, US

A61F002/00

424423000

Hydrogel devices for surgical implantation to replace damaged cartilage in a mammalian joint (such as a knee, hip, shoulder, etc.) are disclosed, with one or more of the following enhancements: (1) articulating surfaces that have been given negative surface charge densities that emulate natural cartilage and that interact with positively charged components of synovial fluid; (2) anchoring systems with affixed pegs that will lock into accommodating receptacles, which will be anchored into hard bone before the implant is inserted into a joint; (3) a three-dimensional reinforcing mesh made of strong but flexible fibers, embedded within at least a portion of the hydrogel.

2013019, Jul 25, 2013

Jan 20, 2012

13/355276

KEVIN A. MANSMANN - Paoli PA, US

A61B 17/04

606232

Knotless suture anchors are disclosed for surgical use, which contain one or more types of ratcheting mechanisms that will allow a surgeon to pull a suture strand through an anchor device in one direction, without allowing the suture strand to travel or creep backward, in the other direction. This will allow a surgeon to emplace a number of such anchors in hard bone(s) or soft tissue(s), during installation of an implant device, while the various suture strands remain loose and do not interfere with proper positioning of the implant. When the implant device is roughly in position, the surgeon can gently “snug” all of the suture strands (which preferably should be braided, to provide a non-smooth surface that will enable a stronger and more secure grip by the ratcheting mechanism), so that they will all reach a moderate plateau of gentle yet firm tension. After the surgeon has ensured that the implant is in proper position, with all of the anchoring sutures in a “snug” status, a series of final tightening and tensioning steps can be carried out on all of the suture strands.

2009013, May 21, 2009

Nov 30, 2005

12/067654

Kevin A. Mansmann - Paoli PA, US
Alvin A. Potter - Glen Mills PA, US

A61F 2/08, A61F 2/02, A61B 17/58

623 1412, 623 1111, 606300

Surgical implants for replacing cartilage are provided with hydrogel polymers affixed to anchors made of “shape-memory” materials, such as nitinol alloys. These implants can be flexed, allowing them to be inserted into joints arthroscopically. After insertion, an implant will return to its manufactured size and shape, and can be anchored to bone or other tissue. The anchoring components can grip and hold hydrogels or other soft polymers by means of an interface of porous fabric. The fabric can support a reinforcing mesh embedded within the soft polymer, and its bottom surface can promote tissue ingrowth, leading to stronger anchoring. Two or more porous layers can enclose a soft polymer, for purposes such as sustained drug release or holding transplanted cells.

2007029, Dec 20, 2007

Jun 19, 2006

11/471090

Kevin A. Mansmann - Paoli PA, US

A61F 2/30, A61F 2/38, A61B 17/16

623 1412, 623 2016, 606 79

Surgical implants use combined anchoring components to replace meniscal or labral cartilage, in ways that provide strong reinforcement while emulating natural anchoring. An arc-shaped polymer segment is coupled to an anchoring rim made of shape-memory material, which will fit into a groove prepared in a bone surface using specialized tools. A fabric material or anchoring ring is provided above the polymer segment, and can be secured to a knee capsule or other soft tissue. Fabric strips can extend out from the tips of the polymer arc, for additional anchoring. An additional polymer segment can also be provided to replace a hyaline cartilage layer, with a porous bottom surface to promote tissue ingrowth. By using peripheral rather than central anchoring, such implants can be given very high strength and stbility, to last for multiple decades.

2013019, Jul 25, 2013

Apr 23, 2012

13/452980

Kevin A. Mansmann - Paoli PA, US

A61F 2/08

623 1412

Flexible cartilage-replacing implants are disclosed that use either or both of () enlarged peripheral rim components, and/or () elongated flexible reinforcing members that are embedded around the peripheral edge of an implant device. These types of anchoring devices, especially when used in combination, can provide flexible implants that can be implanted arthroscopically into synovial joints, for complete replacement of damaged cartilage segments.

2007011, May 24, 2007

Sep 15, 2006

11/521939

Kevin Mansmann - Paoli PA, US

A61B 17/00

606080000

Surgical tools are disclosed for minimally-invasive planing of bone surfaces that will support prosthetic implants, such as cartilage-repair implants. Such planing tools must create smooth surfaces that will closely fit the anchoring surface of an implant. Such tools can use a rotating cylindrical burr, partially covered by a cowl having adjustable components to control grinding depth and bone curvature. Burrs can be mounted on the ends of rotating shafts, or they can be angled, using drive-coupling interfaces. In other embodiments, shaver or burr tools can be supplemented by accessory-type devices (such as suction tubes, cautery tips, and pinchers) that can be extended beyond the normal working tip of a tool, to enable additional functions that will be useful during surgery.