Patents by Inventor Mark L. Mathis
Mark L. Mathis 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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Patent number: 6793673Abstract: An assembly for effecting the condition of a mitral valve annulus includes a mitral valve therapy device, a coupling structure carried by the device, a catheter, a second coupling structure, and a locking member. To implant the device, the device is first releasably locked to a pushing member by the coupling structures and the locking member. When the device is positioned within the coronary sinus adjacent the mitral valve annulus and deployed, the coupling structures may be released from each other by the release of the locking member.Type: GrantFiled: December 26, 2002Date of Patent: September 21, 2004Assignee: Cardiac Dimensions, Inc.Inventors: Leonard Kowalsky, Gregory D. Nieminen, Ryan H. Braxtan, Mark L. Mathis
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Publication number: 20040158321Abstract: There is disclosed a method of implanting a mitral valve therapy device in a patient's coronary sinus adjacent the patient's mitral valve annulus. The method includes the steps of positioning the mitral valve therapy device within the coronary sinus of the patient adjacent to the mitral valve annulus, evaluating effectiveness of the device, and assessing arterial perfusion of the heart.Type: ApplicationFiled: February 12, 2003Publication date: August 12, 2004Applicant: Cardiac Dimensions, Inc.Inventors: David G. Reuter, Mark L. Mathis
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Patent number: 6773446Abstract: A delivery apparatus for a self-expanding stent is disclosed. The apparatus has an outer sheath forming an elongated tubular member having distal and proximal ends and an inside and outside diameter. The apparatus also includes an inner shaft located coaxially within the outer sheath. The inner shaft has a distal end, a proximal end and longitudinal axis extending therebetween. At least a portion of the inner shaft is made from a flexible coiled member. The shaft preferably includes a stop attached thereto, the stop being proximal to the distal end of the sheath. Lastly, the apparatus includes a self-expanding stent located within the outer sheath, wherein the stent makes frictional contact with the outer sheath and the shaft is disposed coaxially within a lumen of the stent. During deployment of the stent, the stent makes contact with the stop.Type: GrantFiled: August 2, 2000Date of Patent: August 10, 2004Assignee: Cordis CorporationInventors: Clifford J. Dwyer, Luis A. Davila, Frederick Feller, III, Mark L. Mathis, David J. Wilson
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Publication number: 20040153147Abstract: A mitral valve annulus reshaping device includes at least a portion that is formed of a biocompatible shape memory alloy SMA having a characteristic temperature, Af, that is preferably below body temperature. The device is constrained in an unstable martensite (UM) state while being introduced through a catheter that passes through the venous system and into the coronary sinus of the heart. The reshaping device is deployed adjacent to the mitral valve annulus of the heart as it is forced from the catheter. When released from the constraint of the catheter, the SMA of the device at least partially converts from the UM state to an austenitic state and attempts to change to a programmed shape that exerts a force on the adjacent tissue and modifies the shape of the annulus. The strain of the SMA can be varied when the device is within the coronary sinus.Type: ApplicationFiled: February 3, 2003Publication date: August 5, 2004Applicant: Cardiac Dimensions, Inc.Inventor: Mark L. Mathis
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Publication number: 20040153052Abstract: An assembly for effecting the condition of a mitral valve of a heart includes a mitral valve therapy device, a guide wire, and a guide tube. The mitral valve therapy device is configured to reshape the mitral valve annulus of the heart when placed within the coronary sinus adjacent the mitral valve annulus. The guide wire is configured to be fed into the coronary sinus of the heart adjacent the mitral valve annulus. The guide tube has a distal end, a proximal end, and a lumen extending between the distal end and the proximal end. The guide tube further includes a side port, intermediate the distal and proximal ends which communicates with the lumen. This permits the guide tube to be slidingly received on the guide wire with the guide wire extending from the distal end, through the lumen, and out the side port. In use, the guide tube is slid along the guide wire into the coronary sinus.Type: ApplicationFiled: September 10, 2003Publication date: August 5, 2004Applicant: Cardiac Dimensions, Inc.Inventor: Mark L. Mathis
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Publication number: 20040127980Abstract: An assembly for effecting the condition of a mitral valve annulus includes a mitral valve therapy device, a coupling structure carried by the device, a catheter, a second coupling structure, and a locking member. To implant the device, the device is first releasably locked to a pushing member by the coupling structures and the locking member. When the device is positioned within the coronary sinus adjacent the mitral valve annulus and deployed, the coupling structures may be released from each other by the release of the locking member.Type: ApplicationFiled: December 26, 2002Publication date: July 1, 2004Applicant: Cardiac Dimensions, Inc.Inventors: Leonard Kowalsky, Gregory D. Nieminen, Ryan H. Braxtan, Mark L. Mathis
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Publication number: 20040111095Abstract: A system for selectively deploying a medical device includes a cartridge that is engageable with a proximal end of a delivery catheter that is routed to a desired location in a patient's body. An advancement mechanism is provided for advancing the medical device out of the cartridge and into the delivery catheter for deploying the medical device at the desired location in the patient's body.Type: ApplicationFiled: December 5, 2002Publication date: June 10, 2004Applicant: Cardiac Dimensions, Inc.Inventors: Lucas S. Gordon, Mark L. Mathis, Greg Nieminen
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Publication number: 20040106939Abstract: This invention is an improved method and kit for producing a desired channel or pathway in the interlamellar space in the corneal stroma for inserting a biocompatible material. The biocompatible polymer may be an intrastromal corneal ring (ICR). The method involves the use of clockwise and counter-clockwise dissectors, and optionally channel connectors and finish channel connectors. The kit contains clockwise and counter-clockwise dissectors and optionally channel connectors, finish channel connectors and probes.Type: ApplicationFiled: May 20, 2003Publication date: June 3, 2004Inventors: Mark L. Mathis, John A. Scholl, Robert A. Proudfoot, Thomas A. Silvestrini
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Patent number: 6743219Abstract: A delivery apparatus for self-expanding stents may be utilized to safely deliver stents to a target site. The apparatus has an outer sheath forming an elongated tubular member having distal and proximal ends and an inside and outside diameter. The apparatus also includes an inner shaft located coaxially within the outer sheath. The inner shaft has a distal end, a proximal end and a longitudinal axis extending therebetween. At least a portion of the inner shaft is made from a flexible coiled member. The shaft preferably includes a stop attached thereto, the stop being proximal to the distal end of the sheath. Lastly, the apparatus includes a self-expanding stent located within the outer sheath, wherein the stent makes frictional contact with the outer sheath and the shaft is disposed coaxially within a lumen of the stent. During deployment of the stent, the stent makes contact with the stop.Type: GrantFiled: August 2, 2000Date of Patent: June 1, 2004Assignee: Cordis CorporationInventors: Clifford J. Dwyer, Luis A. Davila, Frederick Feller, III, Mark L. Mathis, David J. Wilson
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Publication number: 20040010305Abstract: An intravascular support device includes a support or reshaper wire, a proximal anchor and a distal anchor. The support wire engages a vessel wall to change the shape of tissue adjacent the vessel in which the intravascular support is placed. The anchors and support wire are designed such that the vessel in which the support is placed remains open and can be accessed by other devices if necessary. The device provides a minimal metal surface area to blood flowing within the vessel to limit the creation of thrombosis. The anchors can be locked in place to secure the support within the vessel.Type: ApplicationFiled: May 2, 2003Publication date: January 15, 2004Applicant: Cardiac Dimensions, Inc.Inventors: Clifton A. Alferness, John M. Adams, Mark L. Mathis, David G. Reuter, Cruz Beeson, Leonard Kowalsky
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Publication number: 20030236569Abstract: An intravascular support device includes a support or reshaper wire, a proximal anchor and a distal anchor. The support wire engages a vessel wall to change the shape of tissue adjacent the vessel in which the intravascular support is placed. The anchors and support wire are designed such that the vessel in which the support is placed remains open and can be accessed by other devices if necessary. The device provides a minimal metal surface area to blood flowing within the vessel to limit the creation of thrombosis. The anchors can be locked in place to secure the support within the vessel.Type: ApplicationFiled: May 2, 2003Publication date: December 25, 2003Applicant: Cardiac Dimensions, Inc.Inventors: Mark L. Mathis, Leonard Kowalsky, David G. Reuter, Cruz Beeson
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Publication number: 20030225454Abstract: An intravascular support device includes a support or reshaper wire, a proximal anchor and a distal anchor. The support wire engages a vessel wall to change the shape of tissue adjacent the vessel in which the intravascular support is placed. The anchors and support wire are designed such that the vessel in which the support is placed remains open and can be accessed by other devices if necessary. The device provides a minimal metal surface area to blood flowing within the vessel to limit the creation of thrombosis. The anchors can be locked in place to secure the support within the vessel.Type: ApplicationFiled: May 2, 2003Publication date: December 4, 2003Applicant: Cardiac Dimensions, Inc.Inventors: Mark L. Mathis, Gregory D. Nieminen, David G. Reuter
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Publication number: 20030212453Abstract: An anchor anchors a therapeutic device having an elongated body within a body lumen. The anchor includes a fixation member carried on the device which is adjustable from a first configuration that permits placement of the device in the body lumen to a second configuration that anchors the device within the body lumen. The anchor further includes a lock that locks the fixation member in the second configuration. The fixation member may be locked in any one of a plurality of intermediate points between the first configuration and a maximum second configuration.Type: ApplicationFiled: May 8, 2002Publication date: November 13, 2003Applicant: Cardiac Dimensions, Inc.Inventors: Mark L. Mathis, Leonard Kowalsky, David G. Reuter, Cruz Beeson
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Publication number: 20030171806Abstract: A mitral valve therapy device effects the condition of a mitral valve annulus of a heart. The device includes an elongated member dimensioned to be placed in the coronary sinus of the heart adjacent the mitral valve annulus. The elongated member is flexible when placed in the heart in a first orientation to position the device in the coronary sinus adjacent the mitral valve annulus and relatively inflexible when rotated into a second orientation after the device is positioned in the coronary sinus adjacent to the mitral valve annulus to substantially straighten and increase the radius of curvature of the mitral valve annulus.Type: ApplicationFiled: March 11, 2002Publication date: September 11, 2003Applicant: Cardiac Dimensions, Inc.Inventors: Mark L. Mathis, Gregory D. Nieminen
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Publication number: 20030144697Abstract: A device effects the mitral valve annulus geometry of a heart. The device includes a first anchor configured to be positioned within and anchored to the coronary sinus of the heart adjacent the mitral valve annulus within the heart and a second anchor configured to be positioned within the coronary sinus of the heart proximal to the first anchor and adjacent the mitral valve annulus within the heart. The second anchor, when deployed, anchors against distal movement and is moveable in a proximal direction. The device further includes a connecting member having a fixed length permanently attached to the first and second anchors. As a result, when the first and second anchors are within the coronary sinus with the first anchor anchored in the coronary sinus, the second anchor may be displaced proximally to effect the geometry of the mitral valve annulus and released to maintain the effect on the mitral valve geometry.Type: ApplicationFiled: January 30, 2002Publication date: July 31, 2003Applicant: Cardiac Dimensions, Inc.Inventors: Mark L. Mathis, Gregory D. Nieminen, David G. Reuter
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Publication number: 20030105520Abstract: A device, system, and method effects mitral valve annulus geometry of a heart. The device includes a first anchor configured to be positioned within and fixed to the coronary sinus of the heart adjacent the mitral valve annulus within the heart. A cable is fixed to the first anchor and extends proximately therefrom and slidingly through a second anchor which is positioned and fixed in the heart proximal to the first anchor. A lock locks the cable to the second anchor when tension is applied to the cable for effecting the mitral valve annulus geometry.Type: ApplicationFiled: December 5, 2001Publication date: June 5, 2003Applicant: Cardiac Dimensions, Inc.Inventors: Clifton A. Alferness, John M. Adams, Mark L. Mathis, David G. Reuter
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Patent number: 6565584Abstract: This invention is an improved method and kit for producing a desired channel or pathway in the interlamellar space in the corneal stroma for inserting a biocompatible material. The biocompatible polymer may be an intrastromal corneal ring (ICR). The method involves the use of clockwise and counter-clockwise dissectors, and optionally channel connectors and finish channel connectors. The kit contains clockwise and counter-clockwise dissectors and optionally channel connectors, finish channel connectors and probes.Type: GrantFiled: October 20, 1997Date of Patent: May 20, 2003Assignee: Addition Technology, Inc.Inventors: Mark L. Mathis, John A. Scholl, Robert A. Proudfoot, Thomas A. Silvestrini
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Publication number: 20030083538Abstract: A mitral valve therapy device and method treats dilated cardiomyopathy. The device is configured to be placed in the coronary sinus of a heart adjacent to the mitral valve annulus. The device includes a force distributor that distributes an applied force along a pericardial wall of the coronary sinus, and a force applier that applies the applied force to one or more discrete portions of a wall of the coronary sinus adjacent to the mitral valve annulus to reshape the mitral valve annulus in a localized manner.Type: ApplicationFiled: November 1, 2001Publication date: May 1, 2003Applicant: Cardiac Dimensions, Inc.Inventors: John M. Adams, David G. Reuter, Mark L. Mathis, Scott J. Wolf
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Publication number: 20030074054Abstract: A stent having marker tabs formed from a micro-alloyed combination of materials provides for more precise placement and post-procedural visualization in a vessel, by increasing the radiopacity of the stent under X-ray fluoroscopy. A unique micro-alloying process is utilized to form the tabs, comprising a first alloy and a second alloy, wherein one of these alloys is radiopaque. This substantially eliminates the possibility of galvanic action between the tab and the stent. This process is also applicable to other medical devices.Type: ApplicationFiled: November 8, 2002Publication date: April 17, 2003Inventors: Thomas Duerig, Mark L. Mathis, Alan Roy Pelton, Dieter Stoeckel
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Publication number: 20030018343Abstract: The present invention involves medical devices, and also the delivery systems used to convey them to a desired location for treatment and then deploy them in position. Of course, it is desirable for many reasons to reduce the amount of stress or loading in the compressed medical device. Less stress generally means the device is more flexible during delivery, less friction during deployment, less possibility of device failure. Also, less stress may indicate the delivery system can obtain a longer shelf life, needs to support less expansive force, and can be designed with greater flexibility and smaller dimensions to reach smaller and more delicate anatomy. The novel technique of the present invention includes intentionally “over-compressing” the stent or other medical device to a size slightly smaller than eventually desired, using much greater pressure, and then “relaxing” the stent by allowing it to expand slightly to the desired initial size.Type: ApplicationFiled: July 23, 2001Publication date: January 23, 2003Inventor: Mark L. Mathis