US20040034411A1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Percutaneously delivered heart valve and delivery means thereof
Assignee: Medtronic 3F Therapeutics Inc
•
Filing: 2002-08-16
•
Granted: —
•
Expires: 2022-08-16
Abstract
Abstract This invention discloses a percutaneous delivered heart valve and delivery means thereof, wherein the percutaneous delivered heart valve is a twistedly foldable heart valve prosthesis comprising a generally cylindrical support element with a diameter, wherein the support element is twistedly foldable to a smaller diameter, a flexible heart valve with a plurality of valvular leaflets releasably attached to said support element, and a receptacle having a plurality of connecting members secured to the cylindrical support element, wherein the receptacle is releasably matched to an expanding element capable of untwisting the receptacle adapted for un-twisting and unfolding said heart valve.
Inventors
- 👤 Rodolfo Quijano
- 👤 Hosheng Tu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:23
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2427; A61F2/243; A61F2/2412; A61F2/2418
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
83 words
1 . A method for minimally invasively delivering a foldable heart valve prosthesis into a patient, the foldable heart valve prosthesis comprising a twistedly foldable support element and a heart valve releasably secured to said support element, said method comprising: twistedly folding said support element with the secured heart valve within a lumen of a delivery apparatus; delivering said delivery apparatus to a target valvular annulus of the patient; and un-twisting said support element to unfold and deploy said heart valve in place.
Claim 2
Dependent Claim
83 words
1 . A method for minimally invasively delivering a foldable heart valve prosthesis into a patient, the foldable heart valve prosthesis comprising a twistedly foldable support element and a heart valve releasably secured to said support element, said method comprising: twistedly folding said support element with the secured heart valve within a lumen of a delivery apparatus; delivering said delivery apparatus to a target valvular annulus of the patient; and un-twisting said support element to unfold and deploy said heart valve in place.
Claim 3
Dependent Claim
15 words
2 . The method of claim 1 , wherein the delivery apparatus comprises a catheter.
Claim 4
Dependent Claim
39 words
3 . The method of claim 2 , wherein the delivery step is carried out with said catheter through an opening selected from a group consisting of a carotid artery, ajugular vein, a subclavian vein, and a body vessel.
Claim 5
Dependent Claim
15 words
4 . The method of claim 1 , wherein the delivery apparatus comprises a cannula.
Claim 6
Dependent Claim
23 words
5 . The method of claim 4 , wherein the delivery step is carried out with said cannula through a percutaneous intercostal penetration.
Claim 7
Dependent Claim
48 words
6 . The method of claim 5 further comprising a step of removing at least a portion of a patient's heart valve by means of a cutting tool introduced through the percutaneous intercostal penetration and through an internal penetration on a cardiac wall before the twistedly folding step.
Claim 8
Dependent Claim
24 words
7 . The method of claim 5 , wherein the step of removing is carried out by providing radiofrequency energy to the cutting tool.
Claim 9
Dependent Claim
45 words
8 . The method of claim 5 further comprising a step of fastening the unfolded heart valve within the valvular annulus by means of an instrument introduced through the percutaneous intercostal penetration and through an internal penetration on a cardiac wall after the un-twisting step.
Claim 10
Dependent Claim
20 words
9 . The method of claim 1 further comprising a step of removing the support element after the un-twisting step.
Claim 11
Dependent Claim
92 words
10 . A twistedly foldable heart valve prosthesis to replace a diseased valve of a patient comprising: a generally cylindrical support element with a diameter, wherein the support element is twistedly foldable to a smaller diameter; a flexible heart valve with a plurality of valvular leaflets releasably attached to said support element; and a receptacle having a plurality of connecting members secured to the cylindrical support element, wherein the receptacle is releasably matched to an expanding element capable of matching and untwisting the receptacle adapted for un-twisting and unfolding said heart valve.
Claim 12
Dependent Claim
92 words
10 . A twistedly foldable heart valve prosthesis to replace a diseased valve of a patient comprising: a generally cylindrical support element with a diameter, wherein the support element is twistedly foldable to a smaller diameter; a flexible heart valve with a plurality of valvular leaflets releasably attached to said support element; and a receptacle having a plurality of connecting members secured to the cylindrical support element, wherein the receptacle is releasably matched to an expanding element capable of matching and untwisting the receptacle adapted for un-twisting and unfolding said heart valve.
Claim 13
Dependent Claim
20 words
11 . The heart valve prosthesis of claim 10 , wherein the flexible heart valve is made of tissue material.
Claim 14
Dependent Claim
28 words
12 . The heart valve prosthesis of claim 11 , wherein the tissue material is pericardium tissue selected from a group consisting of equine, bovine, porcine, and ovine.
Claim 15
Dependent Claim
24 words
13 . The heart valve prosthesis of claim 11 , wherein the tissue material is chemically treated to reduce antigenicity of said tissue material.
Claim 16
Dependent Claim
33 words
14 . The heart valve prosthesis of claim 13 , wherein the tissue material is chemically treated with a chemical selected from a group consisting of glutaraldehyde, formaldehyde, dialdehyde starch, and polyepoxy compounds.
Claim 17
Dependent Claim
33 words
15 . The heart valve prosthesis of claim 10 , wherein the flexible heart valve is made of a material selected from a polymer group consisting of silicone, polyurethane, latex, and mixture thereof.
Claim 18
Dependent Claim
34 words
16 . The heart valve prosthesis of claim 10 , wherein the cylindrical support element further comprises a plurality of anchoring members for anchoring said support element onto annular tissue of the diseased valve.
Claim 19
Dependent Claim
25 words
17 . The heart valve prosthesis of claim 16 , wherein the anchoring members are triggered for facing outwardly when the support element is untwisted.
Claim 20
Dependent Claim
18 words
18 . The heart valve prosthesis of claim 10 , wherein the diseased valve is an aortic valve.
Claim 21
Dependent Claim
18 words
19 . The heart valve prosthesis of claim 10 , wherein the diseased valve is a pulmonary valve
Claim 22
Dependent Claim
18 words
20 . The heart valve prosthesis of claim 10 , wherein the diseased valve is an atrioventricular valve.
Claim 23
Dependent Claim
74 words
21 . The heart valve prosthesis of claim 11 , wherein said flexible heart valve is an atrioventricular valve comprising a plurality of cusps, each cusp having a semicircular tip edge and two generally straight side edges that are joined at said semicircular tip edge, wherein each of said straight side edges is trimmed and configured at an angle of about less than 20 degrees from a reference central longitudinal line of said cusp.
Claim 24
Dependent Claim
40 words
22 . The heart valve prosthesis of claim 10 , wherein the expanding element is made of a material selected from a group consisting of polyethylene, polypropylene, polycarbonate, nylon, polytetrafluoroethylene, polyurethane, stainless steel, Nitinol, titanium, polyimide, polyester, and mixture thereof.
Claim 25
Dependent Claim
33 words
23 . The heart valve prosthesis of claim 10 , wherein the support element is made of a material selected from a group consisting of stainless steel, Nitinol, titanium, gold, and shape-memory material.
Claim 26
Dependent Claim
71 words
24 . A method for minimally invasively delivering a foldable heart valve into a patient, said method comprising: folding said valve within a lumen of delivery means for delivering said valve to a target valvular annulus of the patient; and unfolding said valve in place by a balloon catheter, wherein a differentially expandable balloon of the balloon catheter is configured to expand the folded heart valve into an oval unfolded valve.
Claim 27
Dependent Claim
71 words
24 . A method for minimally invasively delivering a foldable heart valve into a patient, said method comprising: folding said valve within a lumen of delivery means for delivering said valve to a target valvular annulus of the patient; and unfolding said valve in place by a balloon catheter, wherein a differentially expandable balloon of the balloon catheter is configured to expand the folded heart valve into an oval unfolded valve.
Claim 28
Dependent Claim
40 words
25 . The method of claim 24 , wherein said differentially expandable balloon comprises a longitudinal axis, a major traverse axis and a minor traverse axis, the major traverse axis being at least 10% longer than the minor traverse axis.
Claim 29
Dependent Claim
23 words
26 . The method of claim 24 , wherein said differentially expandable balloon is delivered through a percutaneous intercostal penetration of the patient.
Claim 30
Dependent Claim
37 words
27 . The method of claim 24 , wherein said differentially expandable balloon is delivered through an opening selected from a group consisting of a carotid artery, a jugular vein, a subclavian vein, and a body vessel.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.