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1. US5824063 - Method of replacing atrioventricular heart valves using flexible tubes

Office
United States of America
Application Number 08749335
Application Date 14.11.1996
Publication Number 5824063
Publication Date 20.10.1998
Grant Number 5824063
Grant Date 20.10.1998
Publication Kind A
IPC
A61F 2/24
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
2Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
02Prostheses implantable into the body
24Heart valves
A61F 2/00
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
2Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
A61L 27/36
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
27Materials for prostheses or for coating prostheses
36containing ingredients of undetermined constitution or reaction products thereof
CPC
A61L 27/3843
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
27Materials for ; grafts or; prostheses or for coating ; grafts or; prostheses
36containing ingredients of undetermined constitution or reaction products thereof ; , e.g. transplant tissue, natural bone, extracellular matrix
38containing added animal cells
3839characterised by the site of application in the body
3843Connective tissue
A61F 2/0095
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
2Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
0095Packages or dispensers for prostheses or other implants
A61F 2/2412
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
2Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
02Prostheses implantable into the body
24Heart valves ; ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
2412with soft flexible valve members, e.g. tissue valves shaped like natural valves
A61L 27/3604
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
27Materials for ; grafts or; prostheses or for coating ; grafts or; prostheses
36containing ingredients of undetermined constitution or reaction products thereof ; , e.g. transplant tissue, natural bone, extracellular matrix
3604characterised by the human or animal origin of the biological material, e.g. hair, fascia, fish scales, silk, shellac, pericardium, pleura, renal tissue, amniotic membrane, parenchymal tissue, fetal tissue, muscle tissue, fat tissue, enamel
A61L 27/3629
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
27Materials for ; grafts or; prostheses or for coating ; grafts or; prostheses
36containing ingredients of undetermined constitution or reaction products thereof ; , e.g. transplant tissue, natural bone, extracellular matrix
3604characterised by the human or animal origin of the biological material, e.g. hair, fascia, fish scales, silk, shellac, pericardium, pleura, renal tissue, amniotic membrane, parenchymal tissue, fetal tissue, muscle tissue, fat tissue, enamel
3629Intestinal tissue, e.g. small intestinal submucosa
A61L 27/3641
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
27Materials for ; grafts or; prostheses or for coating ; grafts or; prostheses
36containing ingredients of undetermined constitution or reaction products thereof ; , e.g. transplant tissue, natural bone, extracellular matrix
3641characterised by the site of application in the body
Applicants COX; JAMES L.
Inventors Cox James L.
Agents Cox Boyd D.
Title
(EN) Method of replacing atrioventricular heart valves using flexible tubes
Abstract
(EN)

This invention comprises a method of using tubular material to replace an atrioventricular (AV) heart valve (i.e., a mitral or tricuspid valve, positioned between an atrial chamber and a ventricular chamber) during cardiac surgery. Preferably, the tubular material should be inherently tubular; i.e., it should be created in tubular form from its inception, rather than by using a longitudinal suture line or other seam to convert a flat sheet of material into a tubular shape. Suitable tubular materials include (1) biocompatible synthetic materials which are manufactured in tubular form, by methods such as extrusion or coating a cylindrical molding device, using material which is sufficiently thin and flexible to serve as leaflets in AV heart valves; and (2) a segment of submucosal tissue harvested from a small intestine, either from the patient who is undergoing the cardiac surgery, or from an animal or human cadaver if the harvested tissue is properly treated to reduce antigenicity. To create a replacement AV valve, the inlet of the tubular segment is sutured to the mitral or tricuspid valve annulus, after the native valve leaflets have been removed. The outlet end of the tube is trimmed or sculpted into leaflets, and the distal ends of the leaflets are sutured to papillary muscles in the ventricle, in a manner which causes the leaflets to "approximate" (close together), during systolic contraction of the heart, in a configuration that resembles the line of commissure created by healthy native leaflets. This generates flow patterns that closely duplicate the flow patterns of native AV valves.