Patents by Inventor Keith E. Myers
Keith E. Myers 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).
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Publication number: 20100100176Abstract: A method and device for reducing paravalvular leakage upon implantation of a replacement heart valve is provided. The valve assembly includes a tissue or bioprosthetic heart valve attached to an anchoring structure. The anchoring structure includes an inlet rim that is substantially C-shaped in cross section to form a concave landing zone. The anchoring structure self-seats when implanted in the sinus of a patient with the proximal and distal ends of the C-shaped inlet rim pushed against the aorta to effectively prevent paravalvular leakage.Type: ApplicationFiled: October 21, 2009Publication date: April 22, 2010Applicant: ATS Medical, Inc.Inventors: David Elizondo, Andrzej M. Malewicz, Matthew W. Weston, Keith E. Myers
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Publication number: 20090326524Abstract: A method of cutting tissue for use as an implantable medical device employs a laser cutting system. The laser cutting system is computer controlled and includes a laser combined with a motion system. The laser precisely cuts segments out of source tissue according to predetermined pattern as designated by the computer. The cutting energy of the laser is selected so that the cut edges of the tissue segments are fused, melted or welded to discourage delamination or fraying, but communication of thermal energy into the segment beyond the edge is minimized to avoid damaging the tissue adjacent the edge.Type: ApplicationFiled: August 27, 2009Publication date: December 31, 2009Applicant: 3F Therapeutics, IncInventors: Douglas S. Cali, Keith E. Myers
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Patent number: 7594974Abstract: A method of cutting material for use in an implantable medical device employs a plotted laser cutting system. The laser cutting system is computer controlled and includes a laser combined with a motion system. The laser precisely cuts segments out of source material according to a predetermined pattern as designated by the computer. The segments are used in constructing implantable medical devices. The cutting energy of the laser is selected so that the cut edges of the segments are melted to discourage delamination or fraying, but communication of thermal energy into the segment beyond the edge is minimized to avoid damaging the segment adjacent the edge.Type: GrantFiled: December 8, 2004Date of Patent: September 29, 2009Assignee: 3F Therapeutics, Inc.Inventors: Douglas S. Cali, Keith E. Myers
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Publication number: 20090188900Abstract: A method of cutting material for use in an implantable medical device employs a plotted laser cutting system. The laser cutting system is computer controlled and includes a laser combined with a motion system. The laser precisely cuts segments out of source material according to predetermined pattern as designated by the computer. The segments are used in constructing implantable medical devices. The cutting energy of the laser is selected so that the cut edges of the segments are melted to discourage delamination or fraying, but communication of thermal energy into the segment beyond the edge is minimized to avoid damaging the segment adjacent the edge.Type: ApplicationFiled: February 13, 2009Publication date: July 30, 2009Applicant: 3F Therapeutics, Inc.Inventors: Douglas S. Cali, Keith E. Myers
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Patent number: 7101396Abstract: Methods and systems for minimally invasive replacement of a valve. The system includes a collapsible valve and anchoring structure, devices and methods for expanding the valve anchoring structure, adhesive means to seal the valve to the surrounding tissue, a catheter-based valve sizing and delivery system, native valve removal means, and a temporary valve and filter assembly to facilitate removal of debris material. The valve assembly comprises a valve and anchoring structure for the valve, dimensioned to fit substantially within the valve sinus.Type: GrantFiled: October 6, 2003Date of Patent: September 5, 2006Assignee: 3F Therapeutics, Inc.Inventors: Jason Artof, Tuoc Tan Nguyen, Keith E. Myers
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Patent number: 7044966Abstract: Methods and systems for minimally invasive replacement of a valve. The system includes a collapsible valve and anchoring structure, devices and methods for expanding the valve anchoring structure, adhesive means to seal the valve to the surrounding tissue, a catheter-based valve sizing and delivery system, native valve removal means, and a temporary valve and filter assembly to facilitate removal of debris material. The valve assembly comprises a valve and anchoring structure for the valve, dimensioned to fit substantially within the valve sinus.Type: GrantFiled: October 6, 2003Date of Patent: May 16, 2006Assignee: 3F Therapeutics, Inc.Inventors: Oleg Svanidze, Keith E. Myers
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Patent number: 6872226Abstract: A method of cutting material for use in an implantable medical device employs a plotted laser cutting system. The laser cutting system is computer controlled and includes a laser combined with a motion system. The laser precisely cuts segments out of source material according to a predetermined pattern as designated by the computer. The segments are used in constructing implantable medical devices. The cutting energy of the laser is selected so that the cut edges of the segments are melted to discourage delamination or fraying, but communication of thermal energy into the segment beyond the edge is minimized to avoid damaging the segment adjacent the edge.Type: GrantFiled: July 26, 2002Date of Patent: March 29, 2005Assignee: 3F Therapeutics, Inc.Inventors: Douglas S. Cali, Keith E. Myers
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Publication number: 20040117009Abstract: An improved prosthetic mitral valve is provided having advantageous hemodynamic performance, nonthrombogenicity, and durability. The valve includes a valve body having an inflow annulus and an outflow annulus. Commissural attachment locations are disposed adjacent the outflow annulus. An anterior leaflet and a posterior leaflet of the valve are shaped differently from one another. The inflow annulus preferably is scalloped so as to have a saddle-shaped periphery having a pair of relatively high portions separated by a pair of relatively low portions. The anterior high portion preferably is vertically higher than the posterior high portion.Type: ApplicationFiled: September 23, 2003Publication date: June 17, 2004Inventors: Douglas S. Cali, Keith E. Myers, Brian Biancucci, Jason Artof, Christine T. Nguyen, Rodolfo C. Quijano
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Patent number: 6019739Abstract: An annulus sizer measures the size of a valve annulus during annuloplasty surgery. The annulus sizer includes a sizing portion for measuring the valve annulus and a coupling portion for attaching to a handle. The coupling portion is disposed on a proximal surface of the sizing portion. The sizing portion has a thickness on the order of about 0.1 inch. This relatively small thickness of the sizer facilitates minimally invasive annuloplasty surgery. For example, the sizer may be inserted through a relatively small intercostal incision. In addition, the relatively thin sizing portion minimizes optical distortion. The coupling portion may be disposed on the sizing portion at a location which is offset from the center of the sizer, thereby defining an enlarged viewing area. The coupling portion may have threading to engage with threading of the handle to ensure secure attachment.Type: GrantFiled: June 18, 1998Date of Patent: February 1, 2000Assignee: Baxter International Inc.Inventors: Richard S. Rhee, Keith E. Myers, Jerry L. Jackman
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Patent number: 6020196Abstract: Disclosed herein are methods for harvesting adipose tissue so as to preserve an increased population of viable microvascular endothelial cells. Adipose tissue containing microvascular endothelial cells is harvested using a collection apparatus incorporating an elongate cannula having apertures with tissue cutting edges. A sub-ambient pressure is applied to a lumen in the cannula to draw the adipose tissue through the aperture where it is then severed using the cutting edge to disrupt the connective adipose matrix. This harvesting provides a cleaner, more homogeneous sample of adipose tissue, thereby increasing the population of viable microvascular endothelial cells obtained through further processing. Rapid and easy methods for the further homogenization of the harvested adipose tissue are also disclosed.Type: GrantFiled: March 6, 1998Date of Patent: February 1, 2000Assignee: Baxter International Inc.Inventors: Can B. Hu, Keith E. Myers, Robert C. Peterson
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Patent number: 5880242Abstract: A solution containing a nonpolymeric epoxy compound for cross linking biological tissues and bioprosthetic materials prepared thereby. The nonpolymeric epoxy compound has the general structural formula:R.sub.1 --CH.sub.2 --O--X--O--CH.sub.2 --R.sub.2wherein, X is a straight chain aliphatic hydrocarbon having at least four (4) and no more than five (5) carbon atoms bonded directly to one another, said straight chain aliphatic hydrocarbon being devoid of side branches and having terminal carbon atoms at either end thereof, the terminal carbon atoms at the ends of said straight chain aliphatic hydrocarbon being bonded to the oxygen atoms shown in the foregoing general formula, wherein at least one of the terminal groups R.sub.1, or R.sub.2 is an epoxy group and the other of said terminal groups R.sub.1 or R.sub.2 is either a) an epoxy group, or b) an aldehyde group. One preferred crosslinking agent of the above general formula is 1,4, butanediol diglycidyl ether.Type: GrantFiled: August 19, 1997Date of Patent: March 9, 1999Assignee: Baxter International Inc.Inventors: Can B. Hu, Keith E. Myers, Diana Nguyen-Thien-Nhon, Ralph Kafesjian
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Patent number: 5744360Abstract: Disclosed herein are methods for harvesting adipose tissue so as to preserve an increased population of viable microvascular endothelial cells. Adipose tissue containing microvascular endothelial cells is harvested using a collection apparatus incorporating an elongate cannula having apertures with tissue cutting edges. A sub-ambient pressure is applied to a lumen in the cannula to draw the adipose tissue through the aperture where it is then severed using the cutting edge to disrupt the connective adipose matrix. This harvesting provides a cleaner, more homogeneous sample of adipose tissue, thereby increasing the population of viable microvascular endothelial cells obtained through further processing. Rapid and easy methods for the further homogenization of the harvested adipose tissue are also disclosed.Type: GrantFiled: May 9, 1996Date of Patent: April 28, 1998Assignee: Baxter International Inc.Inventors: Can B. Hu, Keith E. Myers, Robert C. Peterson
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Patent number: RE42818Abstract: A method of cutting material for use in an implantable medical device employs a plotted laser cutting system. The laser cutting system is computer controlled and includes a laser combined with a motion system. The laser precisely cuts segments out of source material according to a predetermined pattern as designated by the computer. The segments are used in constructing implantable medical devices. The cutting energy of the laser is selected so that the cut edges of the segments are melted to discourage delamination or fraying, but communication of thermal energy into the segment beyond the edge is minimized to avoid damaging the segment adjacent the edge.Type: GrantFiled: April 22, 2010Date of Patent: October 11, 2011Assignee: 3F Therapeutics, Inc.Inventors: Douglas S. Cali, Keith E. Myers