1
Rick L Shockey, Robert A Van Tassel: Intravascular drug delivery dilatation catheter. Schneider, Haugen and Nikolai, February 19, 1991: US04994033 (444 worldwide citation)

An intravascular catheter designed to apply a liquid medicament or other substance to a stenotic lesion as the blood vessel is undergoing dilatation to facilitate the restoration and long-term maintenance of patency to the blood vessel. It comprises three concentrically arranged flexible plastic tub ...


2
Robert A Van Tassel, Robert G Hauser: Barrier device for ostium of left atrial appendage. Atritech, Jeffrey H Ingerman, Fish & Neave, April 22, 2003: US06551303 (377 worldwide citation)

A membrane applied to the ostium of an atrial appendage for blocking blood from entering the atrial appendage which can form blood clots therein is disclosed. The membrane also prevents blood clots in the atrial appendage from escaping therefrom and entering the blood stream which can result in a bl ...


3
Robert A Van Tassel, Mark A Rydell, Gilmore T Schjeldahl: Catheter with soft deformable tip. Angiomedics Corporation, Orrin M Haugen, Thomas J Nikolai, Douglas L Tschida, July 30, 1985: US04531943 (316 worldwide citation)

A catheter for insertion in a body orifice or blood vessel comprising an elongated tubular body with a soft, symmetrically deformable member on the distal end thereof for decreasing the likelihood of injury to body tissue upon the insertion and removal thereof. In one embodiment, the tip member comp ...


4
Robert A Van Tassel, Joshua Makower, Robert J Thatcher: Surgical depth measuring instrument and method. Schneider, Haugen and Nikolai, March 8, 1994: US05292309 (259 worldwide citation)

A device for measuring the depth below skin level of a blood vessel that has been punctured in the course of a catheterization or other interventional vascular procedure comprises a tubular member having a proximal end and a distal end portion that is preferably tapered to a small outer diameter. Th ...


5
Joshua Makower, Robert S Schwartz, David R Holmes, Robert A Van Tassel: Percutaneous in-situ coronary bypass method and apparatus. TransVascular, Robert D Buyan, Stout Uxa Buyan & Mullins, September 4, 2001: US06283983 (234 worldwide citation)

Methods and devices for percutaneous, in situ coronary bypass wherein a tissue puncturing catheter is used to form blood flow paths between an artery and an adjacent vein such that arterial blood will flow through a segment of the adjacent vein, thereby bypassing a lesion in the artery. The tissue p ...


6
Robert A Van Tassel, David R Holmes, Robert S Schwartz: Self-sealing vascular access device. Tricardia L L C, Haugen and Nikolai P A, March 17, 1998: US05728132 (212 worldwide citation)

An instrument for achieving rapid hemostasis at the conclusion of a catheterization procedure comprises a device for injecting a fluid hemostatic agent into a puncture wound that is operatively associated with a conventional introducer sheath component of the introducer used to gain access to a bloo ...


7
Robert A Van Tassel, Robert G Hauser: Barrier device for ostium of left atrial appendage. Atritech, Jeffrey H Ingerman, Fish & Neave, May 4, 2004: US06730108 (189 worldwide citation)

A membrane applied to the ostium of an atrial appendage for blocking blood from entering the atrial appendage which can form blood clots therein is disclosed. The membrane also prevents blood clots in the atrial appendage from escaping therefrom and entering the blood stream which can result in a bl ...


8
Robert A Van Tassel, David R Holmes Jr, Robert S Schwartz: Implantable device for promoting repair of a body lumen. TriCardia, Inskeep IP Group, June 26, 2007: US07235096 (145 worldwide citation)

An implantable stent having surface features adapted to promote an organized growth pattern of infiltrating cells when implanted in a tubular organ is provided. The surface features comprise depressions, pores, projections, pleats, channels or grooves in the stent body and are designed to increase t ...


9
Robert S Schwartz, Robert A Van Tassel: Venous valvuloplasty device and method. TriCardia, Inskeep Intellectual Property Group, August 23, 2005: US06932838 (97 worldwide citation)

A device 10 and method for replacing or restoring competence to incompetent valves. The device 10 is inserted percutaneously or surgically and is preferably constructed of a material capable of promoting cellular ingrowth such that, eventually, native biologic tissue completely covers the device 10 ...


10
Robert S Schwartz, Robert A Van Tassel, David R Holmes: Syringe system. Tricardia, Inskeep IP Group, November 29, 2005: US06969373 (86 worldwide citation)

A medical device is provided having a needle or a catheter, insertable into a living body, which defines a plurality of holes in fluid communication with a central lumen. The holes may be of various patterns located and angled to create a desired injectate cloud pattern when an injectate is forced t ...