Patents by Inventor Brendan J. McCrea
Brendan J. McCrea has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20120193018Abstract: A method for forming a self-expanding stent-graft, including coupling a shape memory member to a polymer cladding to form a polymer clad member, disposing a length of the polymer clad member in an overlapping helical manner about a longitudinal axis, joining and sealing adjacent overlapping regions of the polymer clad member to form a stent-graft, manipulating the stent-graft from a first diameter to a second diameter smaller than the first diameter, and loading the stent-graft into a restraining sheath at the second diameter, the restraining sheath preventing expansion of the stent-graft from the second diameter to the first diameter.Type: ApplicationFiled: March 29, 2012Publication date: August 2, 2012Applicant: BARD PERIPHERAL VASCULAR, INC.Inventors: Christopher E. Banas, Tarun J. Edwin, Brendan J. McCrea, Rajagopal R. Kowligi
-
Publication number: 20120145318Abstract: A method for making an encapsulated stent includes providing a first seamless unsintered ePTFE tube, providing a second seamless unsintered ePTFE tube, positioning a balloon-expandable stent between the first and second ePTFE tubes to form an assembly, disposing an ePTFE interlayer member between the first and second ePTFE tubes, and joining the first ePTFE tube to the second ePTFE tube through openings in a wall of the stent by applying first pressure, and then heat, to the assembly.Type: ApplicationFiled: February 17, 2012Publication date: June 14, 2012Inventors: Brendan J. McCrea, Tarun J. Edwin, Christopher E. Banas
-
Publication number: 20110315305Abstract: A method for making a radially expandable stent-graft, including positioning a radially expandable stent member concentrically over a first polymeric member, locating a second polymeric member concentrically over the stent member and first polymeric member, and joining the first polymeric member to the second polymeric member through interstices of the stent member at selective locations to form slip planes between the first and second polymeric members. The slip planes accommodate movement of the stent between the polymeric members to facilitate compression of the stent graft to a low profile.Type: ApplicationFiled: September 2, 2011Publication date: December 29, 2011Applicant: C. R. BARD, INC.Inventors: Tarun J. Edwin, Scott L. Randall, Brendan J. McCrea, Christopher E. Banas
-
Publication number: 20110196473Abstract: A method for making an encapsulated stent includes providing a first seamless unsintered ePTFE tube, providing a second seamless sintered ePTFE tube, positioning a self-expanding stent between the first and second ePTFE tubes to form an assembly, disposing an ePTFE interlayer member between the first and second ePTFE tubes, and joining the first ePTFE tube to the second ePTFE tube through openings in a wall of the stent by applying first pressure, and then heat, to the assembly.Type: ApplicationFiled: April 15, 2011Publication date: August 11, 2011Applicant: Bard Peripheral Vascular, Inc.Inventors: Brendan J. McCrea, Tarun J. Edwin, Christopher E. Banas
-
Publication number: 20090311132Abstract: A method for forming a self-expanding stent-graft, including coupling a shape memory member to a polymer cladding to form a polymer clad member, winding a length of the polymer clad member about a mandrel so that adjacent windings include regions of polymer cladding that overlap, heating the wound polymer clad member to join and seal the overlapping regions to one another, manipulating the stent-graft from a first diameter to a second diameter smaller than the first diameter, and loading the stent-graft into a restraining sheath, wherein the restraining sheath prevents the stent-graft from reverting to the first diameter.Type: ApplicationFiled: August 24, 2009Publication date: December 17, 2009Applicant: C.R. Bard, Inc.Inventors: Christopher E. Banas, Tarun J. Edwin, Brendan J. McCrea, Rajagopal R. Kowligi
-
Publication number: 20090125092Abstract: A method for making an encapsulated stent includes providing a first seamless unsintered ePTFE tube, providing a second seamless sintered ePTFE tube, positioning a self-expanding stent between the first and second ePTFE tubes to form an assembly, and joining the first ePTFE tube to the second ePTFE tube through openings in a wall of the stent by applying first pressure, and then heat, to the assembly.Type: ApplicationFiled: November 17, 2008Publication date: May 14, 2009Applicant: C.R. Bard, Inc.Inventors: Brendan J. McCrea, Tarun J. Edwin, Christopher E. Banas
-
Patent number: 7122050Abstract: A delivery mechanism for an implantable stent which provides a high mechanical advantage to the surgeon and convenient operation so as to facilitate smooth withdrawal of an outer catheter sheath following placement of the stent in the desired location within the patient's vessel. Preferred embodiments include a moving rail actuated by a V-shaped lever, a hydraulic actuator, a rack and pinion drive, and a power screw system. The delivery mechanism has a movable member that is attached to the outer catheter sheath so that actuating the mechanism results in an incremental movement of the moveable member, which in turn results in an incremental movement of the outer catheter sheath. Once the outer catheter sheath is retracted from the stent, the stent is deployed into the patient's vessel and the remaining parts of the mechanism, including an inner tube, an atraumatic tip, and a stabilizing element, are easily removed.Type: GrantFiled: February 4, 2003Date of Patent: October 17, 2006Assignee: Bard Peripheral Vascular, Inc.Inventors: Scott L. Randall, Christopher J. Brooks, Brendan J. McCrea, Donald Van Royen
-
Patent number: 6797217Abstract: Shape memory alloy and elastically self-expanding endoluminal stents which are at least partially encapsulated in a substantially monolithic expanded polytetrafluorethylene (“ePTFE”) covering. An endoluminal stent, which has a reduced diametric dimension for endoluminal delivery and a larger in vivo final diametric diameter is encapsulated in an ePTFE covering which circumferentially covers both the luminal and abluminal walls along at least a portion of the longitudinal extent of the endoluminal stent. The endoluminal stent is fabricated from a shape memory alloy which exhibits either shape memory or pseudoelastic properties or from an elastic material having an inherent spring tension.Type: GrantFiled: September 12, 2002Date of Patent: September 28, 2004Assignee: Bard Peripheral Vascular, Inc.Inventors: Brendan J. McCrea, Tarun J. Edwin, Christopher E. Banas
-
Patent number: 6790226Abstract: An endoluminal prosthesis for implantation within a body lumen to maintain luminal patency, including a support structure and a polymer component, which may be in the form of a wire member joined to a polymer cladding. The support structure may be formed of shape memory alloys, which exhibit either shape memory or pseudoelastic properties, or from an elastic material having an inherent spring tension such as spring steel, braided stainless steel wire, or composite materials, such as woven or braided carbon fibers. The polymer cladding may be formed from a variety of suitable materials.Type: GrantFiled: May 15, 2001Date of Patent: September 14, 2004Assignee: Bard Peripheral Vascular, Inc.Inventors: Tarun J. Edwin, Rajagopal R. Kowligi, Brendan J. McCrea, Christopher E. Banas
-
Patent number: 6758858Abstract: Shape memory alloy and elastically self-expanding endoluminal stents which are at least partially encapsulated in a substantially monolithic expanded polytetrafluorethylene (“ePTFE”) covering. An endoluminal stent, which has a reduced diametric dimension for endoluminal delivery and a larger in vivo final diametric diameter is encapsulated in an ePTFE covering which circumferentially covers both the luminal and abluminal walls along at least a portion of the longitudinal extent of the endoluminal stent. The endoluminal stent is fabricated from a shape memory alloy which exhibits either shape memory or pseudoelastic properties or from an elastic material having an inherent spring tension.Type: GrantFiled: October 24, 2001Date of Patent: July 6, 2004Assignee: Bard Peripheral Vascular, Inc.Inventors: Brendan J. McCrea, Tarun J. Edwin, Christopher E. Banas
-
Publication number: 20030216805Abstract: An endoluminal vascular device having a plurality of predetermined boding locations between respective first and second covering members to selectively encapsulate a support member. Selective bonding between the first and second covering members results in unbonded slip pockets to accommodate movement of the support member. Such a configuration allows compression of the support member with minimal force and also promotes a low profile of the compressed device. Unbonded regions of the covering members also encourage enhanced cellular penetration for rapid healing and can be configured to hold bioactive substances that diffuse through the covering members.Type: ApplicationFiled: April 9, 2003Publication date: November 20, 2003Inventors: Tarun J. Edwin, Scott L. Randall, Brendan J. McCrea, Christopher E. Banas
-
Publication number: 20030201058Abstract: A method for making an endoluminal prosthesis for implantation within a body lumen to maintain luminal patency, the prothesis including a support structure, such as a wire member, and a polymer component, such as a polymer cladding. The method may include joining a wire member to a polymer cladding, helically wrapping a length of the joined support wire member and polymer cladding such that adjacent windings of the polymer cladding have overlapping regions, and heating the joined support wire member and polymer cladding above the melt point of the polymer cladding.Type: ApplicationFiled: May 8, 2003Publication date: October 30, 2003Inventors: Christopher E. Banas, Tarun J. Edwin, Brendan J. McCrea, Rajagopal R. Kowligi
-
Publication number: 20030144671Abstract: A delivery mechanism for an implantable stent which provides a high mechanical advantage to the surgeon and convenient operation so as to facilitate smooth withdrawal of an outer catheter sheath following placement of the stent in the desired location within the patient's vessel. Preferred embodiments include a moving rail actuated by a V-shaped lever, a hydraulic actuator, a rack and pinion drive, and a power screw system. The delivery mechanism has a movable member that is attached to the outer catheter sheath so that actuating the mechanism results in an incremental movement of the moveable member, which in turn results in an incremental movement of the outer catheter sheath. Once the outer catheter sheath is retracted from the stent, the stent is deployed into the patient's vessel and the remaining parts of the mechanism, including an inner tube, an atraumatic tip, and a stabilizing element, are easily removed.Type: ApplicationFiled: February 4, 2003Publication date: July 31, 2003Inventors: Christopher J. Brooks, Brendan J. McCrea, Scott L. Randall, Donald Van Royen
-
Patent number: 6547814Abstract: A method for selectively bonding layers of polymeric material, especially expanded polytetrafluoroethylene (ePTFE), to create endoluminal vascular devices. In a preferred method the selective bonding is achieved by applying pressure to selected areas using a textured mandrel. This permits a stent device to be encapsulated between two layers of ePTFE with unbonded slip pockets to accommodate movement of the structural members of the stent. This allows stent compression with minimal force and promotes a low profile of the compressed device. Unbonded regions of ePTFE allow enhanced cellular penetration for rapid healing and can also contain bioactive substance that will diffuse through the ePTFE to treat the vessel wall.Type: GrantFiled: January 16, 2001Date of Patent: April 15, 2003Assignee: IMPRA, Inc.Inventors: Tarun J. Edwin, Scott L. Randall, Brendan J. McCrea, Christopher E. Banas
-
Patent number: 6527552Abstract: A dental prophylaxis angle is provided having a body having a sleeve sized for fitting the nose of a dental handpiece, a drive part comprising a drive shaft extending into the sleeve and a drive member on the drive shaft. A driven part comprising a driven part shaft. The drive and driven parts has axes of rotation which are at substantial angles to each other. The drive part shaft is sized for gripping by a gripping mechanism in the handpiece. The drive member has a forward surface and a post extending from its forward surface. The drive part post is sized to limit end play of the drive part. Additionally, the drive part post has a shallow cavity formed in a forward surface thereof to reduce the contact area of the post with the driven part shaft, and to provide a reservoir for lubricant in the angle.Type: GrantFiled: June 13, 2001Date of Patent: March 4, 2003Assignee: Young Dental Manufacturing I, L.L.C.Inventors: Gerald R. Loddeke, Brendan J. McCrea
-
Patent number: 6514261Abstract: A delivery mechanism for an implantable stent which provides a high mechanical advantage to the surgeon and convenient operation so as to facilitate smooth withdrawal of an outer catheter sheath following placement of the stent in the desired location within the patient's vessel. Preferred embodiments include a moving rail actuated by a V-shaped lever, a hydraulic actuator, a rack and pinion drive, and a power screw system. The delivery mechanism has a movable member that is attached to the outer catheter sheath so that actuating the mechanism results in an incremental movement of the moveable member, which in turn results in an incremental movement of the outer catheter sheath. Once the outer catheter sheath is retracted from the stent, the stent is deployed into the patient's vessel and the remaining parts of the mechanism, including an inner tube, an atraumatic tip, and a stabilizing element, are easily removed.Type: GrantFiled: September 30, 1999Date of Patent: February 4, 2003Assignee: Impra, Inc.Inventors: Scott L. Randall, Brendan J. McCrea, Christopher J. Brooks, Donald Van Royen
-
Publication number: 20030006528Abstract: Shape memory alloy and elastically self-expanding endoluminal stents which are at least partially encapsulated in a substantially monolithic expanded polytetrafluorethylene (“ePTFE”) covering. An endoluminal stent, which has a reduced diametric dimension for endoluminal delivery and a larger in vivo final diametric diameter is encapsulated in an ePTFE covering which circumferentially covers both the luminal and abluminal walls along at least a portion of the longitudinal extent of the endoluminal stent. The shape memory endoluminal stent is fabricated from a shape memory alloy which exhibits either shape memory or pseudoelastic properties or from an elastic material having an inherent spring tension.Type: ApplicationFiled: September 12, 2002Publication date: January 9, 2003Inventors: Tarun J. Edwin, Brendan J. McCrea, Christopher E. Banas
-
Publication number: 20020192618Abstract: A dental prophylaxis angle is provided having a body having a sleeve sized for fitting the nose of a dental handpiece, a drive part comprising a drive shaft extending into the sleeve and a drive member on the drive shaft. A driven part comprising a driven part shaft. The drive and driven parts has axes of rotation which are at substantial angles to each other. The drive part shaft is sized for gripping by a gripping mechanism in the handpiece. The drive member has a forward surface and a post extending from its forward surface. The drive part post is sized to limit end play of the drive part. Additionally, the drive part post has a shallow cavity formed in a forward surface thereof to reduce the contact area of the post with the driven part shaft, and to provide a reservoir for lubricant in the angle.Type: ApplicationFiled: June 13, 2001Publication date: December 19, 2002Applicant: Young Dental Manufacturing I, L.L.C.Inventors: Gerald R. Loddeke, Brendan J. McCrea
-
Patent number: 6451047Abstract: Shape memory alloy and elastically self-expanding endoluminal stents 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 larger in vivo final diametric diameter, is encapsulated in an ePTFE covering which circumferentially covers both the luminal and abluminal walls along at least a portion of the longitudinal extent of the endoluminal stent. The shape memory endoluminal stent is fabricated from a shape memory alloy which exhibits either shape memory or pseudoelastic properties or from an elastic material having an inherent spring tension.Type: GrantFiled: April 9, 1997Date of Patent: September 17, 2002Assignee: Impra, Inc.Inventors: Brendan J. McCrea, Tarun J. Edwin, Christopher E. Banas
-
Publication number: 20020038143Abstract: Shape memory alloy and elastically self-expanding endoluminal stents which are at least partially encapsulated in a substantially monolithic expanded polytetrafluorethylene (“ePTFE”) covering. An endoluminal stent, which has a reduced diametric dimension for endoluminal delivery and a larger in vivo final diametric diameter is encapsulated in an ePTFE covering which circumferentially covers both the luminal and abluminal walls along at least a portion of the longitudinal extent of the endoluminal stent. The shape memory endoluminal stent is fabricated from a shape memory alloy which exhibits either shape memory or pseudoelastic properties or from an elastic material having an inherent spring tension.Type: ApplicationFiled: October 24, 2001Publication date: March 28, 2002Inventors: Brendan J. McCrea, Tarun J. Edwin, Christopher E. Banas