1
Steve A Herweck, Theodore Karwoski, Paul Martakos: Manually separable multi-lumen vascular graft. Atrium Medical Corporation, Lahive & Cockfield, March 30, 1993: US05197976 (223 worldwide citation)

A vascular prosthesis has a plurality of tubular structures, each of which is manually separable from the others. Each tube structure has a biocompatible exterior surface and a lumen of predetermine diameter. Fluid, such as blood, is channelled through the lumina upon implantation in an arterial or ...


2
Steve A Herweck, Theodore Karwoski, Paul Martakos: Implantable prosthetic device for the delivery of a bioactive material. Atrium Medical Corporation, Lahive & Cockfield, May 2, 1995: US05411550 (155 worldwide citation)

An implantable prosthetic device for sustained release of a bioactive material into a fluid flow pathway of a patient comprises a body adapted for attachment to the fluid flow pathway. The body defines a primary lumen for accommodating fluid flow therethrough and at least one secondary lumen at leas ...


3
Steve A Herweck, Theodore Karwoski, Paul Martakos: Implantable prosthetic device having integral patency diagnostic indicia. Atrium Medical Corporation, Lahive & Cockfield, June 14, 1994: US05320100 (141 worldwide citation)

An implantable prosthetic device comprises a remotely detectible component disposed in the body forming the device for allowing the device to be detected by x-ray, ultrasonic, or MRI imaging. By disposing at least two remotely detectible components in the body of the device, the effective flow diame ...


4
Steve A Herweck, Peter Gingras, Paul Martakos, Theodore Karwoski: Expandable shielded vessel support. Atrium Medical Corporation, Lahive & Cockfield, January 4, 2000: US06010529 (101 worldwide citation)

A radially expandable support body is enveloped within a cocoon. In a preferred construction, the support is a stent, and a tube of polymeric material, e.g. polytetrafluoroethylene (PTFE), passes through the interior of the stent body and is turned back upon itself over the stent to form a cuff. The ...


5
Steve A Herweck, Peter H Gingras, Paul Martakos, Theodore Karwoski: Expandable fluoropolymer device for delivery of therapeutic agents and method of making. Atrium Medical Corporation, Lahive & Cockfield, October 18, 2005: US06955661 (96 worldwide citation)

A radially expandable fluid delivery device for delivering a fluid to a treatment site within the body is disclosed. The fluid delivery device is constructed of a microporous, biocompatible fluoropolymer material having a microstructure that can provide a controlled, uniform, low-velocity fluid dist ...


6
Jonathan L Goodwin, Peter H Gingras, Steve A Herweck: Self-forming prosthesis for repair of soft tissue defects. Atrium Medical Corporation, Lahive & Cockfield, May 23, 2000: US06066776 (94 worldwide citation)

A prosthesis is provided that is advantageously used to fill a soft tissue or muscle defect, such as an inquinal or femoral hernia. In a first aspect of the invention, multiple layers of a flexible, mesh material are attach together at a finite number of joins. A tab is placed at the geometric cente ...


7
Ryan A Amara, Peter H Gingras, Theodore Karwoski, Steve A Herweck: Pile mesh prosthesis. Atrium Medical Corporation, Lahive & Cockfield, August 31, 2004: US06783554 (94 worldwide citation)

A method and apparatus relating to a biocompatible soft tissue implant is disclosed. The implant, in the form of a prosthesis, is constructed of a knitted pile mesh material arranged into either a 3-dimensional structure or a planar shape or structure. The material or fabric includes a plurality of ...


8
Steve A Herweck, Theodore Karwoski, Paul Martakos: Self-sealing implantable vascular graft. Atrium Medical Corporation, Lahive & Cockfield, March 9, 1993: US05192310 (88 worldwide citation)

An implantable self-sealing vascular graft device comprises an implantable tubular body defining a primary lumen and at least one secondary lumen, the lumina sharing a common side wall. The primary lumen is adapted for attachment to the vascular system of the patient to accommodate blood flow theret ...


9
Steve A Herweck, Theodore Karwoski: Elasticization of microporous woven tubes. Atrium Medical Corporation, Lahive & Cockfield, March 24, 1987: US04652263 (86 worldwide citation)

Disclosed are the product and method for making a macroscopically smooth, microporous, flexible, elastic tubular prosthetic device from a substantially non-elastic woven fabric tube. The method involves axially compressing the substantially non-elastic tube on a tight fitting cylindrical mandrel so ...


10
Peter Gingras, Paul Martakos, Theodore Karwoski, Steve A Herweck: Vascular endoprosthesis and method. Atrium Medical Corporation, Lahive & Cockfield, July 20, 1999: US05925074 (83 worldwide citation)

A vascular endoprosthesis is formed of a tubular liner preform with a continuous surface and having a diameter smaller than that of an intended vessel. The liner is inserted to a treatment site, and its sheet material undergoes a radially-directed expansion to a final size that fits the vessel. Inse ...