System and method for heart valve replacement
First Claim
1. A prosthetic heart valve replacement system for valve replacement in a patient'"'"'s valve annulus during surgery, enabling a reduction of time duration that the patient is subjected to a heart-lung machine during prosthetic heart valve replacement, comprising:
- a first outer anchoring ring which is flanged and fastened to the patient'"'"'s heart valve annulus during surgery, and a second inner valve ring which is flanged and to which a prosthetic heart valve is attached outside of the patient, such as by suturing;
the second inner valve ring being configured to be assembled to be captively and snugly held concentrically inside of said first outer anchoring ring,wherein said first outer anchoring ring and said second inner valve ring are made of material which remains noncorrosive even when subjected to prolonged use inside of the patient'"'"'s heart, and wherein the first outer anchoring ring and the second inner valve ring each have a generally tubular configuration with a horizontal inwardly projecting flange at one end, the second inner valve ring being configured to be circumferentially resilient when compressed radially inwards, so as to be captively held within the first outer anchoring ring upon assembly.
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Abstract
A prosthetic heart valve replacement system and method aim to reduce the time duration of the patient on the heart-lung machine during surgery. In one embodiment, the invention uses a two rings (e.g., of Titanium) comprising a first outer anchoring ring installed in a first step in the patient annulus, e.g., by stapling (e.g., using Nitinol® staples), and a second inner valve ring which has apertures and to which the sewing cuff of prosthetic heart valve (e.g., of Dacron) is sutured around the sewing cuff. The suturing is expediently completed outside of the patient'"'"'s body, parallel with the stapling of the anchoring ring in the patient annulus. The inner valve ring may have circumferential resiliency. The inner valve ring along with the fastened/sutured prosthetic valve is installed snugly (in a second step) to be captively retained concentrically within the already installed outer anchoring ring, to complete the heart valve replacement.
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Citations
16 Claims
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1. A prosthetic heart valve replacement system for valve replacement in a patient'"'"'s valve annulus during surgery, enabling a reduction of time duration that the patient is subjected to a heart-lung machine during prosthetic heart valve replacement, comprising:
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a first outer anchoring ring which is flanged and fastened to the patient'"'"'s heart valve annulus during surgery, and a second inner valve ring which is flanged and to which a prosthetic heart valve is attached outside of the patient, such as by suturing;
the second inner valve ring being configured to be assembled to be captively and snugly held concentrically inside of said first outer anchoring ring,wherein said first outer anchoring ring and said second inner valve ring are made of material which remains noncorrosive even when subjected to prolonged use inside of the patient'"'"'s heart, and wherein the first outer anchoring ring and the second inner valve ring each have a generally tubular configuration with a horizontal inwardly projecting flange at one end, the second inner valve ring being configured to be circumferentially resilient when compressed radially inwards, so as to be captively held within the first outer anchoring ring upon assembly. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A two-ring prosthetic heart valve replacement system for valve replacement in a patient'"'"'s heart valve annulus during surgery, enabling a reduction of time duration that the patient is subjected to a heart-lung machine during the prosthetic heart valve replacement, comprising:
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a first outer anchoring ring with a tubular configuration with a shelf at one end and a radially inwardly projecting flange integrally formed at the other end of the tubular configuration, said first outer ring being separately stapled, fastened and installed in the patient'"'"'s heart valve annulus during surgery; and
,a second inner valve ring which is also provided with an open tubular configuration and an integrally formed radially inwardly extending apertured flange configured for attachment to the prosthetic heart valve such as by suturing which is done outside of the patient; said second inner valve ring being permanently sutured to the prosthetic heart valve and being configured to be resilient radially inwards to facilitate assembly thereof concentrically inside of the first outer anchoring ring for being captively and snugly held therein. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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Specification