1
Anne Nina Bynon, Sandra M Cundy, Rajagopal R Kowligi: Dual supported intraluminal graft. Impra, David G Rosenbaum, September 16, 1997: US05667523 (419 worldwide citation)

A dual supported intraluminal graft comprising a biocompatible flexible layer sandwiched between two structural support layers. The preferred embodiment comprises a first structural support, such as a stent, which is concentrically retained within a tubular shaped PTFE graft which is concentrically ...


2
Ramon Berguer, Robert C Farnan, William M Colone, Rajagopal R Kowligi, Linda V Della Corna, Joseph B Sinnott: Blood vessel patch. Impra, Cahill Sutton & Thomas, March 31, 1992: US05100422 (300 worldwide citation)

A vascular patch for closing an incision in a blood vessel includes a base layer of expanded polytetrafluoroethylene (PTFE) having an outer coating of an elastomeric, biocompatible material such as polyurethane to minimize suture hole bleeding. Suture guidelines are formed upon the ablumenal side of ...


3
Linda V Della Corna, Robert C Farnan, William M Colone, Rajagopal R Kowligi: Longitudinally compliant vascular graft. Impra, Cahill Sutton & Thomas, September 11, 1990: US04955899 (222 worldwide citation)

A longitudinally compliant PTFE graft is provided by compressing at least a portion of a porous PTFE tube along its longitudinal axis and coating at least the outer wall of the compressed portion of the PTFE tube with a biocompatible elastomer for allowing the compressed portion of the tube to be st ...


4
Mark T Gaterud, Rajagopal R Kowligi, Fariba Khalilifard, Christopher E Banas: Method and apparatus for balloon expandable stent-graft delivery. Impra, David G Rosenbaum, June 4, 1996: US05522882 (179 worldwide citation)

A stent-graft delivery system which includes a catheter, an expandable balloon having non-tapered ends positioned near the distal end of the catheter, a stent circumferentially positioned around a center of the balloon, and a graft circumferentially positioned around the stent. The balloon configura ...


5
Rajagopal R Kowligi, Robert C Farnan, William M Colone, Linda V Della Corna, Joseph B Sinnott: Non-porous coated PTFE graft. Impra, Cahill Sutton & Thomas, October 6, 1992: US05152782 (164 worldwide citation)

A non-porous coated PTFE graft includes a PTFE tube having a conventional porous inner cylindrical wall and a non-porous elastomeric coating applied over at least a portion of the outer cylindrical wall of the PTFE tube to render such portion of the outer cylindrical wall non-porous. The elastomeric ...


6
Christopher E Banas, Rajagopal R Kowligi, Roy H Tang: Covered endoluminal stent and method of assembly. IMPRA a subsidiary of C R Bard, Todd W Wight, Morrison & Foerster, April 10, 2001: US06214039 (93 worldwide citation)

A radially expandable endoluminal covered stent assembly and a method and apparatus for making the same. A longitudinally and radially expanded polytetrafluoroethylene tubular graft is circumferentially engaged about one or more radially expandable stents and is retained thereon by a radial recoil f ...


7
Christopher E Banas, Tarun J Edwin, Brendan J McCrea, Rajagopal R Kowligi: Helically supported graft. IMPRA a subsidiary of C R Bard, Todd W Wight, Morrison & Foerster, July 24, 2001: US06264684 (84 worldwide citation)

Shape memory alloy and elastically self-expanding endoluminal support structures which are at least partially encapsulated in a substantially monolithic expanded polytetrafluoroethylene (“ePTFE”) covering. An endoluminal stent, which has a reduced diametric dimension for endoluminal delivery and a l ...


8
Ramon Berguer, Robert C Farnan, William M Colone, Rajagopal R Kowligi, Linda V Della Corna, Joseph B Sinnott: Blood vessel patch. Impra, Cahill Sutton & Thomas, April 14, 1992: US05104400 (76 worldwide citation)

A vascular patch for closing an incision in a blood vessel includes a base layer of expanded polytetrafluoroethylene (PTFE) having an outer coating of an elastomeric, biocompatible material such as polyurethane to minimize suture hole bleeding. Suture guidelines are formed upon the ablumenal side of ...


9
Rajagopal R Kowligi, John M Bibeau, Howard H Taylor: Textured, porous, expanded PTFE. IMPRA, David G Rosenbaum, November 14, 1995: US05466509 (53 worldwide citation)

A more porous PTFE is obtained by impressing a pattern into extruded PTFE and then expanding the PTFE. The pattern can be impressed by knurling or, preferably, by rolling the sheet between rollers having a pseudo-random pattern formed on the surface of the roller. The uniformity of the pores is cont ...


10
Charles F Bosse, Rajagopal R Kowligi: Uniformly expanded PTFE film. Impra, Cahill Sutton & Thomas, June 14, 1994: US05321109 (44 worldwide citation)

A uniformly expanded PTFE film is provided by extruding a PTFE film and gripping the unexpanded film about its periphery with a number of symmetrically disposed gripping members each equidistant from the center of the film. The extruded PTFE film is heated to a temperature in the range of 200-300 de ...