Patents Assigned to Kensey Nash Corporation
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Patent number: 7316678Abstract: An intra-luminal device for the extraction of occlusive or partially occlusive material is disclosed. Said device comprises a novel catheter extension which minimizes cavitation of extracted fluids and also allows the better navigation of tortuous lumens or vasculature.Type: GrantFiled: March 28, 2003Date of Patent: January 8, 2008Assignee: Kensey Nash CorporationInventors: John E. Nash, Gregory Walters
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Patent number: 7264624Abstract: A system and method of use for effecting the bypass or other anastomosis, connection, or port in a portion of a native blood vessel, duct, lumen or other tubular organ within the body of a living being. The system includes a connector assembly and a deployment instrument for carrying the device to the desired position within the vessel, duct, lumen or tubular organ. The system includes a piercer-dilator instrument to form an opening in the wall of the vessel, duct, lumen or tubular organ into which a connector assembly may be deployed by the deployment instrument. The connector assembly may be at least partially formed of a resorbable material and includes movable members for securing it to the tissue of the vessel, duct, lumen or tubular organ contiguous with the opening. Other components may be included in the device for expediting the procedure, with or without the use of sutures.Type: GrantFiled: July 11, 2005Date of Patent: September 4, 2007Assignee: Kensey Nash CorporationInventors: John E Nash, Douglas G Evans, David M Hoganson
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Publication number: 20070135842Abstract: A percutaneously insertable system for sealing punctures in blood vessels includes an element that is percutaneously insertable into and deplorable within a blood vessel, a thread-like member attached to the element that passes through the wall of the blood vessel and arresting element movable on the thread and into engagement with the other surface of the blood vessel thereby to seal the opening.Type: ApplicationFiled: January 26, 2007Publication date: June 14, 2007Applicant: KENSEY NASH CORPORATIONInventors: Wouter Van de Moer, Rienk Rienks
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Patent number: 7226425Abstract: An apparatus for modulating the pressure of a fluid such as a gas within the expandable portion of a guide wire catheter. The apparatus features a means for controllably gripping and releasing the open, proximal end of a tubular guide wire, means for introducing a fluid to a desired pressure and volume into the expandable portion of the tubular guide wire through the open end, and, while maintaining the pressure and volume of fluid in the tubular guide wire, a means for sealing the open end of said tubular guide wire to seal the fluid in the tubular guide wire. In a preferred embodiment, the apparatus also features a deflation tool for re-opening the sealed tubular guide wire and letting the fluid out. In a particularly preferred embodiment, the pressure and volume of fluid in the tubular guide wire is maintained by utilizing an apparatus to crimp the end of the tubular guide wire, effectively sealing the inside bore of the tubular guide wire.Type: GrantFiled: September 20, 2005Date of Patent: June 5, 2007Assignee: Kensey Nash CorporationInventors: Mark Eberhart, William T. Fisher, John E. Nash, Dennis M. Sauro
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Publication number: 20070118072Abstract: A system and method for opening a lumen in an occluded blood vessel, e.g., a coronary bypass graft, of a living being's vascular system. The system introduces an infusate liquid at a first flow rate to the occluded portion of the blood vessel, and withdraws that liquid and some blood at a second and higher flow rate. This action creates a differential flow in the occluded blood vessel portion and thereby prevent particles of occlusive material from flowing into any upstream blood vessel or downstream blood vessel in said living being's vascular system.Type: ApplicationFiled: January 26, 2007Publication date: May 24, 2007Applicant: Kensey Nash CorporationInventor: John Nash
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Patent number: 7214765Abstract: This invention includes malleable, biodegradable, fibrous compositions for application to a tissue site in order to promote or facilitate new tissue growth. One aspect of this invention is a fibrous component that provides unique mechanical and physical properties. The invention may be created by providing a vessel containing a slurry, said slurry comprising a plurality of natural or synthetic polymer fibers and at least one suspension fluid, wherein the polymer fibers are substantially evenly dispersed and randomly oriented throughout the volume of the suspension fluid; applying a force, e.g., centrifugal, to said vessel containing said slurry, whereupon said force serves to cause said polymer fibers to migrate through the suspension fluid and amass at a furthest extent of the vessel, forming a polymer material, with said polymer material comprising polymer fibers of sufficient length and sufficiently viscous, interlaced, or interlocked to retard dissociation of said polymer fibers.Type: GrantFiled: July 8, 2005Date of Patent: May 8, 2007Assignee: Kensey Nash CorporationInventors: Timothy A. Ringeisen, William Christian Wattengel
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Patent number: 7169168Abstract: A percutaneously insertable system for sealing punctures in blood vessels includes an element that is percutaneously insertable into and deplorable within a blood vessel, a thread-like member attached to the element that passes through the wall of the blood vessel and arresting element movable on the thread and into engagement with the other surface of the blood vessel thereby to seal the opening.Type: GrantFiled: August 21, 2003Date of Patent: January 30, 2007Assignee: Kensey Nash CorporationInventors: Wouter Matthijs Muijs Van De Moer, Rienk Rienks
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Patent number: 7166133Abstract: An implant for deployment in select locations or select tissue for regeneration of tissue is disclosed. The implant comprising collagen and or other bio-resorbable materials, where the implant may also be used for therapy delivery. Additionally, the implant may be “matched” to provide the implant with similar physical and/or chemical properties as the host tissue.Type: GrantFiled: June 13, 2002Date of Patent: January 23, 2007Assignee: Kensey Nash CorporationInventors: Douglas G. Evans, Scott M. Goldman, Russell T. Kronengold
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Patent number: 7156880Abstract: An implantable material for deployment in select locations or select tissue for tissue regeneration is disclosed. The implant comprises collagen, ceramics, and or other bio-resorbable materials or additives, where the implant may also be used for therapy delivery. Additionally, the implant may be “matched” to provide the implant with similar physical and/or chemical properties as the host tissue.Type: GrantFiled: August 14, 2003Date of Patent: January 2, 2007Assignee: Kensey Nash CorporationInventors: Douglas G. Evans, Scott M. Goldman, Russell T. Kronengold
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Patent number: 7048696Abstract: An apparatus for modulating the pressure of a fluid such as a gas within the expandable portion of a guide wire catheter. A preferred embodiment apparatus features a means for controllably gripping and releasing the open, proximal end of a tubular guide wire, means for introducing a fluid to a desired pressure and volume into the expandable portion of the tubular guide wire through the open end, and, while maintaining the pressure and volume of fluid in the tubular guide wire, a means for introducing a sealing member into the open end of said tubular guide wire to seal the fluid in the tubular guide wire. In a particularly preferred embodiment, the apparatus also features a deflation tool for piercing the seal and letting the fluid out. Using this apparatus, the tubular guide wire can be re-sealed and re-opened as necessary.Type: GrantFiled: June 2, 2005Date of Patent: May 23, 2006Assignee: Kensey Nash CorporationInventors: Mark Eberhart, William T. Fisher, John E. Nash, Dennis M. Sauro
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Patent number: 7049348Abstract: Devices and processes (e.g., improved Plasticized Melt Flow processes (PMF) or improved Phase Separation Polymer Concentration (PSPC), etc.) used to make resorbable and non-resorbable structures for treating and/or healing of tissue defects are disclosed. Among the advantages of using these improved processes are the preservation of molecular weight and the broadening of the processing conditions for temperature sensitive polymers and therapies This reduction in processing temperature, pressure and time can help to preserve the molecular weight and/or integrity of the final product or any additive incorporated therein. The present invention relates to an improved porous implant wherein the pores of the implant present a second modeling material on their surfaces. This second material provides a textured or roughened face to the internal surfaces of pores.Type: GrantFiled: August 15, 2002Date of Patent: May 23, 2006Assignee: Kensey Nash CorporationInventors: Douglas G Evans, Jeffrey C Kelly, Todd M DeWitt
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Patent number: 7004914Abstract: An apparatus for modulating the pressure of a fluid such as a gas within the expandable portion of a guide wire catheter. In one embodiment, the pressure and volume of fluid in the tubular guide wire is maintained by utilizing an apparatus to crimp the end of the tubular guide wire, effectively sealing the inside bore of the tubular guide wire. Here, a deflation tool might be employed to sever the crimp from the rest of the tubular guide wire, unsealing the bore of the tubular guide wire. Using this apparatus, the tubular guide wire can be re-sealed and re-opened as necessary.Type: GrantFiled: October 3, 2002Date of Patent: February 28, 2006Assignee: Kensey Nash CorporationInventors: Mark Eberhart, William T. Fisher, John E. Nash, Dennis M. Sauro
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Patent number: 6974862Abstract: This invention includes malleable, biodegradable, fibrous compositions for application to a tissue site in order to promote or facilitate new tissue growth. One aspect of this invention is a fibrous component (e.g., collagen, chitosan, alginate, hyaluronic acid, poly-lactic acid, poly-capralactone, and polyurethane) that provides unique mechanical and physical properties. The invention may be created by providing a vessel containing a slurry, said slurry comprising a plurality of natural or synthetic polymer fibers and at least one suspension fluid, wherein the polymer fibers are substantially evenly dispersed and randomly oriented throughout the volume of the suspension fluid; applying a force, e.g.Type: GrantFiled: June 20, 2003Date of Patent: December 13, 2005Assignee: Kensey Nash CorporationInventors: Timothy A. Ringeisen, W. Christian Wattengel
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Patent number: 6955681Abstract: A transmyocardial revascularization system including a plurality of inserts formed of a material to elicit a healing response in tissue of the myocardium and deployment instruments and associated components for deploying the inserts into the wall of the myocardium. The inserts are arranged to be disposed within respective lumens or channels in the wall of the myocardium. The inserts can take various forms, e.g., be solid members, tubular members, or porous members, and may be resorbable, partially resorbable or non-resorbable. In some embodiments the inserts are arranged to be left in place within the channels in the wall of the myocardium to result in plural lumens which enable blood to flow therethrough and into contiguous capillaries. The deployment instruments are arranged to pierce the tissue of the myocardium from either the endocardium or the epicardium to insert the inserts into the myocardium, depending on the particular deployment instrument used.Type: GrantFiled: November 21, 2002Date of Patent: October 18, 2005Assignee: Kensey Nash CorporationInventors: Douglas G. Evans, John E. Nash
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Patent number: 6936056Abstract: A system and method for opening a lumen in an occluded blood vessel, e.g., a coronary bypass graft, of a living being. The system comprises an atherectomy catheter having a working head, e.g., a rotary impacting impeller, and a debris extraction sub-system. The atherectomy catheter is located within a guide catheter. The working head is arranged to operate on, e.g., impact, the occlusive material in the occluded vessel to open a lumen therein, whereupon some debris may be produced. The debris extraction sub-system introduces an infusate liquid at a first flow rate adjacent the working head and withdraws that liquid and some blood at a second and higher flow rate, through the guide catheter to create a differential flow adjacent the working head, whereupon the debris is withdrawn in the infusate liquid and blood for collection outside the being's body.Type: GrantFiled: January 31, 2003Date of Patent: August 30, 2005Assignee: Kensey Nash CorporationInventors: John E. Nash, William T. Fisher, Charles W. Dodson, Jr., John Michael Henderson, Joseph W. Kaufmann
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Patent number: 6926707Abstract: A tubular instrument including a hollow wall portion and a connector arranged to be used with a guide-wire. The guide-wire has a distal end portion and a proximal end portion, the distal end portion of the guide-wire is arranged to be extended to some interior position within the body of a living being, with the proximal end portion of the guide-wire being located outside the being's body. The connector is located at the distal end of the instrument and is arranged to be readily manipulated by a twisting action to connect the instrument onto the guide-wire for sliding movement therealong.Type: GrantFiled: January 28, 2003Date of Patent: August 9, 2005Assignee: Kensey Nash CorporationInventors: John E. Nash, William T. Fisher, H. Michael Cunningham, Gregory Walters
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Patent number: 6923820Abstract: A system and method of use for effecting the bypass or other anastomosis, connection, or port in a portion of a native blood vessel, duct, lumen or other tubular organ within the body of a living being. The system includes a connector assembly and a deployment instrument for carrying the device to the desired position within the vessel, duct, lumen or tubular organ. The system includes a piercer-dilator instrument to form an opening in the wall of the vessel, duct, lumen or tubular organ into which a connector assembly may be deployed by the deployment instrument. The connector assembly may be at least partially formed of a resorbable material and includes movable members for securing it to the tissue of the vessel, duct, lumen or tubular organ contiguous with the opening. Other components may be included in the device for expediting the procedure, with or without the use of sutures.Type: GrantFiled: February 19, 2002Date of Patent: August 2, 2005Assignee: Kensey Nash CorporationInventors: John E. Nash, Douglas G. Evans, David M. Hoganson
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Publication number: 20050159726Abstract: A transmyocardial revascularization system including a plurality of inserts formed of a material to elicit a healing response in tissue of the myocardium and deployment instruments and associated components for deploying the inserts into the wall of the myocardium. The inserts are arranged to be disposed within respective lumens or channels in the wall of the myocardium. The inserts can take various forms, e.g., be solid members, tubular members, or porous members, and may be resorbable, partially resorbable or non-resorbable. In some embodiments the inserts are arranged to be left in place within the channels in the wall of the myocardium to result in plural lumens which enable blood to flow therethrough and into contiguous capillaries. The deployment instruments are arranged to pierce the tissue of the myocardium from either the endocardium or the epicardium to insert the inserts into the myocardium, depending on the particular deployment instrument used.Type: ApplicationFiled: March 9, 2005Publication date: July 21, 2005Applicant: Kensey Nash CorporationInventors: Douglas Evans, John Nash
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Patent number: 6905505Abstract: A system and method for opening a lumen in an occluded blood vessel, e.g., a coronary bypass graft, of a living being. The system comprises an atherectomy catheter having a working head, e.g., a rotary impacting impeller, and a debris extraction sub-system. The atherectomy catheter is located within a guide catheter. The working head is arranged to operate on, e.g., impact, the occlusive material in the occluded vessel to open a lumen therein, whereupon some debris may be produced. The debris extraction sub-system introduces an infusate liquid at a first flow rate adjacent the working head and withdraws that liquid and some blood at a second and higher flow rate, through the guide catheter to create a differential flow adjacent the working head, whereupon the debris is withdrawn in the infusate liquid and blood for collection outside the being's body.Type: GrantFiled: April 12, 2002Date of Patent: June 14, 2005Assignee: Kensey Nash CorporationInventors: John E. Nash, William T. Fisher, Charles W. Dodson, Jr.
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Publication number: 20050096723Abstract: A method for opening a lumen in an occluded blood vessel, e.g., a coronary bypass graft, of a living being. The method entails using an instrument to deploy the stent at occlusive material within the blood vessel to open the lumen, whereupon some debris may be produced. Operating a debris extraction system for removing debris during deployment of the stent.Type: ApplicationFiled: November 1, 2004Publication date: May 5, 2005Applicant: Kensey Nash CorporationInventors: John Nash, William Fisher, Charles Dodson