US3736598A - Prosthetic cardiac valve - Google Patents
Prosthetic cardiac valve Download PDFInfo
- Publication number
- US3736598A US3736598A US3736598DA US3736598A US 3736598 A US3736598 A US 3736598A US 3736598D A US3736598D A US 3736598DA US 3736598 A US3736598 A US 3736598A
- Authority
- US
- United States
- Prior art keywords
- legs
- ring
- valve
- framework
- flanges
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS 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
- A61F2/00—Filters 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
- A61F2/02—Prostheses implantable into the body
- A61F2/24—Heart 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
- A61F2/2412—Heart 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 with soft flexible valve members, e.g. tissue valves shaped like natural valves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7837—Direct response valves [i.e., check valve type]
- Y10T137/7879—Resilient material valve
- Y10T137/788—Having expansible port
- Y10T137/7882—Having exit lip
- Y10T137/7885—Multiple slit
Definitions
- ABSTRACT A prosthetic aortic or pulmonary valve for permanent cardiac implantation into the natural valve root having a framework which is made from sheet woven of knitted textile fabric material and which consists of an annular ring with three equiangularly spaced projecting legs which extend substantially parallel to one another in the axial direction from the ring.
- Each leg is folded about its longitudinal center line so that the side edges of the legs form radially outwardly projecting flanges, the adjacent flanges of adjacent legs merging through curves into the portion of the ring lying between those two legs whereby a substantially U- shaped continuous outwardly projecting flange is formed between each pair of the three pairs of ad jacent legs.
- the framework supports three separate cusps made of thin flexible impermeable sheet material, each cusp having a substantially U-shaped edge which overlies one of the substantially U-shaped flanges and is bonded to it, and a free edge which extends between the free ends of the corresponding pair of legs and has a length substantially equivalent to one .third of the internal diameter of the framework ring.
- Our present consideration is the provision of a prosthetic aortic or pulmonary valve for permanent implantation in the aortic or pulmonary root where new cusps have to be provided for co-operation with the natural sinus bulges in the root wall.
- a prosthetic valve in which the cusps were provided by arcuate portions of a unitary cylinder or suitable flexible material, the cylinder being supported by a rigid metallic or plastic skeleton including a ring to which one end of the cylinder is attached and defines the upstream diameter of the valve and three prongs extending axially downstream from the ring at 120 intervals, the wall of the cylinder being secured to the prongs to define the axial edges of the cusps.
- the downstream end of the cylinder then provides the free edges of the cusps extending between the tips of the three prongs and these edges open into a circular configuration when the valve is open and meet one another along three equiangularly spaced radii when the valve is closed.
- a prosthetic aortic or pulmonary valve for permanent cardiac implantation into the natural valve root has a framework which is made from sheet woven or knitted textile fabric material and which consists of an annular ring with three equiangularly spaced projecting legs which extend substantially parallel to one another in the axial direction from the ring, each leg being folded about its longitudinally center line so that the side edges of the legs form radially outwardly projecting flanges, the adjacent flanges of adjacent legs merging through curves into the portion of the ring lying between those two legs whereby a substantially U-shaped continuous outwardly projecting flange is formed between each pair of the three pairs of adjacent legs; the framework supporting three separate cusps made of thin flexible impermeable sheet material, each cusp having a substantially U-shaped edge which overlies one of the substantially U-shaped flanges and is bonded to it, and a free edge which extends between the free ends of the corresponding pair of legs and has a length slightly greater than one
- This new arrangement has the advantage that it may be stitched in position in the natural valve root wall by stitches passing through each of the U-shaped flanges and the overlying edges of the cusps.
- the cusps as well as the framework are then'positively stitched in position.
- the framework being made of a fabric, provides adequate support for the cusps and is able to conform to the particular shape of a particular natural valve wall, and also to follow the natural dilation and contraction of the valve wall during the blood pumping cycle, both without appreciable irritation.
- the fabric from which the framework is formed is a fine uncut terylene which may be coated with silicone rubber.
- Velour has the advantage of pro viding a rough surface into which the natural tissue will grow and knit.
- the legs and ring of the framework may be cut as an integral piece from the fabric, the legs then being bent out of the plane of the ring before having the cusps attached to them.
- each of the cusps from a fine woven or. knitted terylene fabric coated with silicone rubber.
- the U-shaped edge of each cusp may be bonded to the complementary flange of the framework by means of a suitable medical quality thermoplastic bonding agent such as silicone rubber.
- FIG. 1 is a downstream end elevation of the valve shown in the closed position
- FIG. 2 is a side elevation of the valve in the closed position
- FIG. 3 is a view corresponding to FIG. 1 but showing the valve open;
- FIG. 4 is a view corresponding to FIG. 2 but showing the valve open
- FIG. 5 is a partially broken away perspective view of the valve in position in a natural aortic root.
- FIG. 6 is a section taken on the line VI-VI in FIG. 5.
- the valve has a framework 7 consisting of a ring with three equiangularly spaced axially extending legs 8, made from terylene velour coated with silicone rubber.
- the ring and legs are folded to provide outwardly projecting flanges 9 each of which is of U-shaped configuration and is continuous between a corresponding pair of adjacent legs 8.
- the length of the free straight edge 12 of each cusp 10 is slightly greater than one third of the circumference of the ring 7 so that when the valve is open, as shown in FIG. 3, the cusps define a substantially cylindrical passage 13 for laminar flow through the valve, but when in the closed position shown in FIG. 1, they meet one another along equiangularly spaced radial planes 14of abutment to close the flow passage
- the ring 7 Prior to implantation the ring 7 is manufactured with an extension 15. However immediately before sliding the valve into the position in the aortic root the extension 15 is trimmed back, for example to the chain dotted line shown in FIGS. 2 and 4, substantially level with the bases of the Us of the flanges 9.
- FIGS. 5 and 6 illustrate the valve sutured into a natural aortic root 16 provided with three natural sinus bulges 17.
- the prosthetic valve is secured in the aortic rent by means of stitches 18 which pass through the flanges 9'and overlapping edges of the cusps l0, and the aortic wall.
- the U-shape of each flange 9 corresponds substantially to the U-shape of the line of contact with the natural tissue around the bottom and sides of each sinus 17.
- the flanges 9 provide a most convenient means for suturing the valve to the natural tissue and since the legs 8 and ring 7 are made of extremely pliable fabric, the valve produces the minimum of irritation likely to lead to trauma.
- a prosthetic pulmonary valve will be constructed and implanted in a directly analogous manner to that described.
- a prosthetic cardiac arterial valve for permanent cardiac implantation into the natural valve root, said of adjacent legs merging through curves into the portion of said ring lying therebetween whereby a substantially U-shaped continuous outwardly projecting flange is formed between each pair of the three pairs of said adjacent legs; said framework supporting three separate cusps made of thin flexible impermeable sheet material, each cusp having a substantially U-shaped edge which overlies one of said substantially Ushaped flanges and is bonded thereto, and a free edge which extends between the free ends of the corresponding pair of said legs and has a length substantially equivalent to one third of the internal circumference of said framework ring.
- each cusp is made from a fine terylene fabric coated with silicone rubber.
Abstract
A prosthetic aortic or pulmonary valve for permanent cardiac implantation into the natural valve root having a framework which is made from sheet woven of knitted textile fabric material and which consists of an annular ring with three equiangularly spaced projecting legs which extend substantially parallel to one another in the axial direction from the ring. Each leg is folded about its longitudinal center line so that the side edges of the legs form radially outwardly projecting flanges, the adjacent flanges of adjacent legs merging through curves into the portion of the ring lying between those two legs whereby a substantially U-shaped continuous outwardly projecting flange is formed between each pair of the three pairs of adjacent legs. The framework supports three separate cusps made of thin flexible impermeable sheet material, each cusp having a substantially U-shaped edge which overlies one of the substantially U-shaped flanges and is bonded to it, and a free edge which extends between the free ends of the corresponding pair of legs and has a length substantially equivalent to one third of the internal diameter of the framework ring.
Description
United States Patent 1191 Bellhouse et al.
[54] PROSTHETIC CARDIAC VALVE [76] Inventors: Brian John Bellhouse, The Ridings, lslip near Oxford; Francis Hewitt Bellhouse, 34 Hill Rise, Old Woodstock, both of England 22 Filed: June 10,1971
[21] Appl. No.: 151,740
[52] US. Cl ..3/l, 3/DIG. 3, 137/525.1 [51] Int.Cl ..A61f1/22,F16k 15/14 [58] Field of Search ..3/l DIG. 3;
[ 56] References Cited UNITED STATES PATENTS 3,197,788 8/1965 Segger ..3 1
OTHER PUBLICATIONS The Direct Approach for the Correction of Aortic lnsufficiency" by Charles A. Hufnagel, Journal of the American Medical Association, Vol. 178, No. 3,0ct. 21, 1961, pp. 275-279.
A Prefabricated Semirigid Tricusp Aortic Valve Prosthesis" by E. A. Hessel et a], Journal of Thoracic & Cardiovascular Surgery, Vol. 54, No. 2, August 1967, pp. 227-241 relied upon.
A Pseudoendocardium For Implantable Blood Pumps by D. Liot ta et al. Trans. Amer. Soc. Artif. lnt. Organs, Vol. XI], 1966, pp. 129--] 34.
1 51 June 5, 1973 Comparative Study of Cardiac and Vascular Implants in Relation to Thrombosis by C. A. Hufnagel et al. Surgery, Vol. 61, No. 1, January, 1967 pp. 11-16.
Primary Examiner-Richard A. Gaudet Assistant Examiner-Ronald L. Frinks Attorneyl-lolcombe, Wetherill & Brisebois [57] ABSTRACT A prosthetic aortic or pulmonary valve for permanent cardiac implantation into the natural valve root having a framework which is made from sheet woven of knitted textile fabric material and which consists of an annular ring with three equiangularly spaced projecting legs which extend substantially parallel to one another in the axial direction from the ring. Each leg is folded about its longitudinal center line so that the side edges of the legs form radially outwardly projecting flanges, the adjacent flanges of adjacent legs merging through curves into the portion of the ring lying between those two legs whereby a substantially U- shaped continuous outwardly projecting flange is formed between each pair of the three pairs of ad jacent legs. The framework supports three separate cusps made of thin flexible impermeable sheet material, each cusp having a substantially U-shaped edge which overlies one of the substantially U-shaped flanges and is bonded to it, and a free edge which extends between the free ends of the corresponding pair of legs and has a length substantially equivalent to one .third of the internal diameter of the framework ring.
6 Claims, 6 Drawing Figures 1 PROSTHETIC CARDIAC VALVE As explained in some detail in U.S. Pat. No. 3,608,097, our research haspersuad ed us that the aortic valve of the human heart is a tricuspid valve which, when the blood is pumped from the left ventricle opens fully to allow the laminar flow of the blood. The three cusps of the valve cooperate with the three sinus bulges in the aortic wall to provide chambers which are open to the flow of blood through openings where the free ends of the cusps terminate short of the distal, that is downstream, ends of the sinuses. At this point the shoulders formed by the ends of the sinuses intercept part of the flow through the valve with the result that vortices, tending to urge the cusps to the closed position, are set up in the chambers. These vortices continue when the blood flow through the valve decelerates at the end of systole with the result that the cusps are moved almost to their closed position before there is any appreciable backflow. We believe that these conditions also exist in the pulmonary valve of the right ventricle and also in the aortic and pulmonary valves of many animals other than humans.
Our present consideration is the provision of a prosthetic aortic or pulmonary valve for permanent implantation in the aortic or pulmonary root where new cusps have to be provided for co-operation with the natural sinus bulges in the root wall.
In the earlier application a prosthetic valve was disclosed in which the cusps were provided by arcuate portions of a unitary cylinder or suitable flexible material, the cylinder being supported by a rigid metallic or plastic skeleton including a ring to which one end of the cylinder is attached and defines the upstream diameter of the valve and three prongs extending axially downstream from the ring at 120 intervals, the wall of the cylinder being secured to the prongs to define the axial edges of the cusps. The downstream end of the cylinder then provides the free edges of the cusps extending between the tips of the three prongs and these edges open into a circular configuration when the valve is open and meet one another along three equiangularly spaced radii when the valve is closed. This construction, although providing the basis for a practical prosthetic valve-has two disadvantages. It is difficult to stitch .the prongs adequately to the natural valve wall between the sinus bulges and the provision of the rigid skeleton encourages movement between the skeleton and the flexible aortic root, and emphasizes the fact that the prosthetic valve is a foreign body.
In accordance with the present invention a prosthetic aortic or pulmonary valve for permanent cardiac implantation into the natural valve root has a framework which is made from sheet woven or knitted textile fabric material and which consists of an annular ring with three equiangularly spaced projecting legs which extend substantially parallel to one another in the axial direction from the ring, each leg being folded about its longitudinally center line so that the side edges of the legs form radially outwardly projecting flanges, the adjacent flanges of adjacent legs merging through curves into the portion of the ring lying between those two legs whereby a substantially U-shaped continuous outwardly projecting flange is formed between each pair of the three pairs of adjacent legs; the framework supporting three separate cusps made of thin flexible impermeable sheet material, each cusp having a substantially U-shaped edge which overlies one of the substantially U-shaped flanges and is bonded to it, and a free edge which extends between the free ends of the corresponding pair of legs and has a length slightly greater than one third of the internal circumference of the framework ring.
This new arrangement has the advantage that it may be stitched in position in the natural valve root wall by stitches passing through each of the U-shaped flanges and the overlying edges of the cusps. The cusps as well as the framework are then'positively stitched in position. The framework, being made of a fabric, provides adequate support for the cusps and is able to conform to the particular shape of a particular natural valve wall, and also to follow the natural dilation and contraction of the valve wall during the blood pumping cycle, both without appreciable irritation.
Preferably the fabric from which the framework is formed is a fine uncut terylene which may be coated with silicone rubber. Velour has the advantage of pro viding a rough surface into which the natural tissue will grow and knit. The legs and ring of the framework may be cut as an integral piece from the fabric, the legs then being bent out of the plane of the ring before having the cusps attached to them.
At present we prefer to make each of the cusps from a fine woven or. knitted terylene fabric coated with silicone rubber. The U-shaped edge of each cusp may be bonded to the complementary flange of the framework by means of a suitable medical quality thermoplastic bonding agent such as silicone rubber.
One example of a prosthetic aortic valve, constructed in accordance with the invention, and its use, are illustrated in the accompanying drawings, in which:
FIG. 1 is a downstream end elevation of the valve shown in the closed position;
FIG. 2 is a side elevation of the valve in the closed position;
FIG. 3 is a view corresponding to FIG. 1 but showing the valve open;
FIG. 4 is a view corresponding to FIG. 2 but showing the valve open;
FIG. 5 is a partially broken away perspective view of the valve in position in a natural aortic root; and,
FIG. 6 is a section taken on the line VI-VI in FIG. 5.
The valve has a framework 7 consisting of a ring with three equiangularly spaced axially extending legs 8, made from terylene velour coated with silicone rubber. The ring and legs are folded to provide outwardly projecting flanges 9 each of which is of U-shaped configuration and is continuous between a corresponding pair of adjacent legs 8. Three similar cusps 10, each of substantially D shape and made of ten denier knitted terylene coated with silicone rubber, overlap and are bonded with a silicone rubber adhesive each by an edge 11 to a corresponding one of the flanges 9. The length of the free straight edge 12 of each cusp 10 is slightly greater than one third of the circumference of the ring 7 so that when the valve is open, as shown in FIG. 3, the cusps define a substantially cylindrical passage 13 for laminar flow through the valve, but when in the closed position shown in FIG. 1, they meet one another along equiangularly spaced radial planes 14of abutment to close the flow passage.
Prior to implantation the ring 7 is manufactured with an extension 15. However immediately before sliding the valve into the position in the aortic root the extension 15 is trimmed back, for example to the chain dotted line shown in FIGS. 2 and 4, substantially level with the bases of the Us of the flanges 9.
FIGS. 5 and 6 illustrate the valve sutured into a natural aortic root 16 provided with three natural sinus bulges 17. During implantation the prosthetic valve is secured in the aortic rent by means of stitches 18 which pass through the flanges 9'and overlapping edges of the cusps l0, and the aortic wall. It will be appreciated that the U-shape of each flange 9 corresponds substantially to the U-shape of the line of contact with the natural tissue around the bottom and sides of each sinus 17. In FIG. 5 the flow from the left ventricle of the heart will be upwardly through the valve and because the free edges 12 of the cusps terminate short of the distal ends of the sinuses l7, hemispherical vortices, indicated by the curled arrow in FIG. 5, will be set up as described in our earlier U.S. patent. Consequently during systole, the valve will open and provide an uninterrupted cylindrical passageway for laminar blood flow but as soon as the flow decelerates, the vortices cause the cusps to fold inwards and close substantially immediately.
The flanges 9 provide a most convenient means for suturing the valve to the natural tissue and since the legs 8 and ring 7 are made of extremely pliable fabric, the valve produces the minimum of irritation likely to lead to trauma.
A prosthetic pulmonary valve will be constructed and implanted in a directly analogous manner to that described.
We claim:
1. A prosthetic cardiac arterial valve for permanent cardiac implantation into the natural valve root, said of adjacent legs merging through curves into the portion of said ring lying therebetween whereby a substantially U-shaped continuous outwardly projecting flange is formed between each pair of the three pairs of said adjacent legs; said framework supporting three separate cusps made of thin flexible impermeable sheet material, each cusp having a substantially U-shaped edge which overlies one of said substantially Ushaped flanges and is bonded thereto, and a free edge which extends between the free ends of the corresponding pair of said legs and has a length substantially equivalent to one third of the internal circumference of said framework ring.
2. A valve according to claim 1, wherein said fabric from which said framework is formed is a fine uncut terylene velour.
3. A valve according to claim 2, wherein said velour is coated with silicone rubber.
4. A valve according to claim '1, wherein said legs and said ring of said framework are cut as an integral piece from said fabric.
5. A valve according to claim 1, wherein each cusp is made from a fine terylene fabric coated with silicone rubber.
6. A valve according to claim 5, in which said terylene fabric is a ten denier warp knitted fabric.
Claims (6)
1. A prosthetic cardiac arterial valve for permanent cardiac implantation into the natural valve root, said valve having a framework made from sheet textile fabric material and consisting of an annular ring with three equiangularly spaced projecting legs which extend substantially parallel to one another in the axial direction from said ring, each leg being folded about a longitudinal center line so that side edges of said legs form radially outwardly projecting flanges, the adjacent flanges of adjacent legs merging through curves into the portion of said ring lying therebetween whereby a substantially U-shaped continuous outwardly projecting flange is formed between each pair of the three pairs of said adjacent legs; said framework supporting three separate cusps made of thin flexible impermeable sheet material, each cusp having a substantially U-shaped edge which overlies one of said substantially U-shaped flanges and is bonded thereto, and a free edge which extends between the free ends of the correSponding pair of said legs and has a length substantially equivalent to one third of the internal circumference of said framework ring.
2. A valve according to claim 1, wherein said fabric from which said framework is formed is a fine uncut terylene velour.
3. A valve according to claim 2, wherein said velour is coated with silicone rubber.
4. A valve according to claim 1, wherein said legs and said ring of said framework are cut as an integral piece from said fabric.
5. A valve according to claim 1, wherein each cusp is made from a fine terylene fabric coated with silicone rubber.
6. A valve according to claim 5, in which said terylene fabric is a ten denier warp knitted fabric.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15174071A | 1971-06-10 | 1971-06-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3736598A true US3736598A (en) | 1973-06-05 |
Family
ID=22540060
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US3736598D Expired - Lifetime US3736598A (en) | 1971-06-10 | 1971-06-10 | Prosthetic cardiac valve |
Country Status (1)
Country | Link |
---|---|
US (1) | US3736598A (en) |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2807467A1 (en) * | 1977-02-23 | 1978-08-24 | Robert Bernard Davis | VALVE PROSTHESIS |
US4192020A (en) * | 1975-05-07 | 1980-03-11 | Washington University | Heart valve prosthesis |
US4245358A (en) * | 1979-01-24 | 1981-01-20 | Manoutcher Moasser | Nontraumatic prosthetic valve with magnetic closure |
US4275469A (en) * | 1979-12-13 | 1981-06-30 | Shelhigh Inc. | Prosthetic heart valve |
US4291420A (en) * | 1973-11-09 | 1981-09-29 | Medac Gesellschaft Fur Klinische Spezialpraparate Mbh | Artificial heart valve |
US4297749A (en) * | 1977-04-25 | 1981-11-03 | Albany International Corp. | Heart valve prosthesis |
US4339831A (en) * | 1981-03-27 | 1982-07-20 | Medtronic, Inc. | Dynamic annulus heart valve and reconstruction ring |
US4417360A (en) * | 1981-07-31 | 1983-11-29 | Manoutchehr Moasser | Nontraumatic prosthetic valve with magnetic closure |
US4473423A (en) * | 1982-05-03 | 1984-09-25 | University Of Utah | Artificial heart valve made by vacuum forming technique |
US4510628A (en) * | 1982-05-03 | 1985-04-16 | University Of Utah | Artificial heart valve made by vacuum forming technique |
US4851000A (en) * | 1987-07-31 | 1989-07-25 | Pacific Biomedical Holdings, Ltd. | Bioprosthetic valve stent |
EP0515324A1 (en) * | 1991-05-24 | 1992-11-25 | SORIN BIOMEDICA CARDIO S.p.A. | A cardiac valve prosthesis, particularly for replacement of the aortic valve |
US5500014A (en) * | 1989-05-31 | 1996-03-19 | Baxter International Inc. | Biological valvular prothesis |
US6126686A (en) * | 1996-12-10 | 2000-10-03 | Purdue Research Foundation | Artificial vascular valves |
US20070100435A1 (en) * | 2003-04-24 | 2007-05-03 | Cook Incorporated | Artificial prostheses with preferred geometries |
US20070260327A1 (en) * | 2003-04-24 | 2007-11-08 | Case Brian C | Artificial Valve Prosthesis with Improved Flow Dynamics |
US8038708B2 (en) | 2001-02-05 | 2011-10-18 | Cook Medical Technologies Llc | Implantable device with remodelable material and covering material |
US8075615B2 (en) | 2006-03-28 | 2011-12-13 | Medtronic, Inc. | Prosthetic cardiac valve formed from pericardium material and methods of making same |
CN101349356B (en) * | 2007-07-16 | 2012-07-25 | 周俊 | One-way elastic valve and fluid delivery device used thereby |
US9314333B2 (en) | 2011-05-26 | 2016-04-19 | On-X Life Technologies, Inc. | Heart valve sewing cuff |
US10940167B2 (en) | 2012-02-10 | 2021-03-09 | Cvdevices, Llc | Methods and uses of biological tissues for various stent and other medical applications |
US11406495B2 (en) | 2013-02-11 | 2022-08-09 | Cook Medical Technologies Llc | Expandable support frame and medical device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3197788A (en) * | 1962-04-23 | 1965-08-03 | Inst Of Medical Sciences | Prosthetic valve for cardiac surgery |
-
1971
- 1971-06-10 US US3736598D patent/US3736598A/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3197788A (en) * | 1962-04-23 | 1965-08-03 | Inst Of Medical Sciences | Prosthetic valve for cardiac surgery |
Non-Patent Citations (4)
Title |
---|
A Prefabricated Semirigid Tricusp Aortic Valve Prosthesis by E. A. Hessel et al, Journal of Thoracic & Cardiovascular Surgery, Vol. 54, No. 2, August, 1967, pp. 227 241 relied upon. * |
A Pseudoendocardium For Implantable Blood Pumps by D. Liotta et al. Trans. Amer. Soc. Artif. Int. Organs, Vol. XII, 1966, pp. 129 134. * |
Comparative Study of Cardiac and Vascular Implants in Relation to Thrombosis by C. A. Hufnagel et al. Surgery, Vol. 61, No. 1, January, 1967 pp. 11 16. * |
The Direct Approach for the Correction of Aortic Insufficiency by Charles A. Hufnagel, Journal of the American Medical Association, Vol. 178, No. 3, Oct. 21, 1961, pp. 275 279. * |
Cited By (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4291420A (en) * | 1973-11-09 | 1981-09-29 | Medac Gesellschaft Fur Klinische Spezialpraparate Mbh | Artificial heart valve |
US4192020A (en) * | 1975-05-07 | 1980-03-11 | Washington University | Heart valve prosthesis |
DE2807467A1 (en) * | 1977-02-23 | 1978-08-24 | Robert Bernard Davis | VALVE PROSTHESIS |
US4297749A (en) * | 1977-04-25 | 1981-11-03 | Albany International Corp. | Heart valve prosthesis |
US4245358A (en) * | 1979-01-24 | 1981-01-20 | Manoutcher Moasser | Nontraumatic prosthetic valve with magnetic closure |
US4275469A (en) * | 1979-12-13 | 1981-06-30 | Shelhigh Inc. | Prosthetic heart valve |
US4339831A (en) * | 1981-03-27 | 1982-07-20 | Medtronic, Inc. | Dynamic annulus heart valve and reconstruction ring |
US4417360A (en) * | 1981-07-31 | 1983-11-29 | Manoutchehr Moasser | Nontraumatic prosthetic valve with magnetic closure |
US4473423A (en) * | 1982-05-03 | 1984-09-25 | University Of Utah | Artificial heart valve made by vacuum forming technique |
US4510628A (en) * | 1982-05-03 | 1985-04-16 | University Of Utah | Artificial heart valve made by vacuum forming technique |
US4851000A (en) * | 1987-07-31 | 1989-07-25 | Pacific Biomedical Holdings, Ltd. | Bioprosthetic valve stent |
US5500014A (en) * | 1989-05-31 | 1996-03-19 | Baxter International Inc. | Biological valvular prothesis |
EP0515324A1 (en) * | 1991-05-24 | 1992-11-25 | SORIN BIOMEDICA CARDIO S.p.A. | A cardiac valve prosthesis, particularly for replacement of the aortic valve |
US5713953A (en) * | 1991-05-24 | 1998-02-03 | Sorin Biomedica Cardio S.P.A. | Cardiac valve prosthesis particularly for replacement of the aortic valve |
US6126686A (en) * | 1996-12-10 | 2000-10-03 | Purdue Research Foundation | Artificial vascular valves |
US8038708B2 (en) | 2001-02-05 | 2011-10-18 | Cook Medical Technologies Llc | Implantable device with remodelable material and covering material |
US9421096B2 (en) | 2003-04-24 | 2016-08-23 | Cook Medical Technologies Llc | Artificial valve prosthesis with improved flow dynamics |
US7717952B2 (en) * | 2003-04-24 | 2010-05-18 | Cook Incorporated | Artificial prostheses with preferred geometries |
US20070260327A1 (en) * | 2003-04-24 | 2007-11-08 | Case Brian C | Artificial Valve Prosthesis with Improved Flow Dynamics |
US8221492B2 (en) | 2003-04-24 | 2012-07-17 | Cook Medical Technologies | Artificial valve prosthesis with improved flow dynamics |
US20070100435A1 (en) * | 2003-04-24 | 2007-05-03 | Cook Incorporated | Artificial prostheses with preferred geometries |
US8075615B2 (en) | 2006-03-28 | 2011-12-13 | Medtronic, Inc. | Prosthetic cardiac valve formed from pericardium material and methods of making same |
US9331328B2 (en) | 2006-03-28 | 2016-05-03 | Medtronic, Inc. | Prosthetic cardiac valve from pericardium material and methods of making same |
CN101349356B (en) * | 2007-07-16 | 2012-07-25 | 周俊 | One-way elastic valve and fluid delivery device used thereby |
US9314333B2 (en) | 2011-05-26 | 2016-04-19 | On-X Life Technologies, Inc. | Heart valve sewing cuff |
US9788947B2 (en) | 2011-05-26 | 2017-10-17 | On-X Life Technologies, Inc. | Heart valve sewing cuff |
US10695169B2 (en) | 2011-05-26 | 2020-06-30 | On-X Life Technologies, Inc. | Heart valve sewing cuff |
US10940167B2 (en) | 2012-02-10 | 2021-03-09 | Cvdevices, Llc | Methods and uses of biological tissues for various stent and other medical applications |
US11406495B2 (en) | 2013-02-11 | 2022-08-09 | Cook Medical Technologies Llc | Expandable support frame and medical device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3736598A (en) | Prosthetic cardiac valve | |
CN109561961B (en) | Artificial valve and artificial valve implantation method | |
US6143024A (en) | Annuloplasty ring having flexible anterior portion | |
US6716241B2 (en) | Venous valve and graft combination | |
US5139515A (en) | Ascending aortic prosthesis | |
US6231602B1 (en) | Aortic annuloplasty ring | |
CA2391234C (en) | Smooth ventricular assist device conduit | |
JP3701198B2 (en) | Suture ring with improved ring fusion | |
US5855602A (en) | Heart valve prosthesis | |
US5928281A (en) | Tissue heart valves | |
US3656185A (en) | Cardiac valvular support prosthesis | |
ES2310598T3 (en) | MANUFACTURING PROCEDURE OF A VALVULAR PROTESIS FOR THE HEART. | |
CA2991854A1 (en) | A valvular sleeve for valvular prostheses and corresponding device | |
CN107530168A (en) | There are the apparatus and method of the pacemaker ratio reduced in cardiac valves replacement | |
US8932344B2 (en) | Aortic conduit configured with terminal ends having neosinuses of valsalva | |
JP2003509116A (en) | Mitral annulus ring and method | |
US3534411A (en) | Cloth covered heart valve | |
CN101917933A (en) | An implantable mechanical heart valve assembly | |
CN102670333A (en) | Aortic valve stent with coronary artery and conveyor of same | |
EP0071610B1 (en) | Cardiac valvular bioprosthesis and the method of manufacture thereof | |
KR20190099289A (en) | Artificial valve | |
CN1701770B (en) | Elastic artificial biological heart valve | |
CN210019797U (en) | Artificial blood vessel with valve | |
RU2541043C2 (en) | Tricuspid valve prosthesis | |
US6063115A (en) | Cardiac assistance system |