Patent US2402063A successfully refreshed from Google Patents.
US20070100440A1
Active / In Force
US
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Device for the implantation and fixation of prosthetic valves
Assignee: Jvt Research & Development Corp
•
Filing: 2006-10-30
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Granted: —
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Expires: 2026-10-30
Abstract
Abstract A device for the transvascular implantation and fixation of prosthetic heart valves having a self-expanding heart valve stent ( 10 ) with a prosthetic heart valve ( 11 ) at its proximal end is introducible into a patient's main artery. With the objective of optimizing such a device to the extent that the prosthetic heart valve ( 11 ) can be implanted into a patient in a minimally-invasive procedure, to ensure optimal positioning accuracy of the prosthesis ( 11 ) in the patient's ventricle, the device includes a self-expanding positioning stent ( 20 ) introducible into an aortic valve positioned within a patient. The positioning stent is configured separately from the heart valve stent ( 10 ) so that the two stents respectively interact in their expanded states such that the heart valve stent ( 10 ) is held by the positioning stent ( 20 ) in a position in the patient's aorta relative the heart valve predefinable by the positioning stent ( 20 ).
Inventors
- 👤 Hans-Reiner Figulla
- 👤 Markus Ferrari
- 👤 Christoph Damm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:41
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2412; A61F2/2418; A61F2/2409; A61F2/2427; A61F2/243; A61F2/2433; A61F2/2436; A61F2/82; A61F2/95; A61F2/958; A61F2002/9528; A61F2210/00; A61F2210/0014; A61F2220/00; A61F2220/0025; A61F2230/00; A61F2230/0002; A61F2230/0028; A61F2230/0054; A61F2250/00; A61F2250/0058; A61F2250/006
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
123 words
1 . A device for the transvascular implantation and fixation of prosthetic heart valves having a self-expanding heart valve stent introducible through a blood vessel of a patient which exhibits a prosthetic heart valve at its proximal end, wherein the device furthermore comprises a self-expanding positioning stent introducible into the pockets of a patient's diseased heart valve which is configured separately from the heart valve stent, and the positioning stent and the heart valve stent are configured so as to respectively interact in their expanded states such that the heart valve stent is held by the positioning stent in a position within the ventricular outflow tract and the arteries close to the patient's heart predefinable by the positioning stent relative the heart valve.
Claim 2
Dependent Claim
123 words
1 . A device for the transvascular implantation and fixation of prosthetic heart valves having a self-expanding heart valve stent introducible through a blood vessel of a patient which exhibits a prosthetic heart valve at its proximal end, wherein the device furthermore comprises a self-expanding positioning stent introducible into the pockets of a patient's diseased heart valve which is configured separately from the heart valve stent, and the positioning stent and the heart valve stent are configured so as to respectively interact in their expanded states such that the heart valve stent is held by the positioning stent in a position within the ventricular outflow tract and the arteries close to the patient's heart predefinable by the positioning stent relative the heart valve.
Claim 3
Dependent Claim
45 words
2 . The device according to claim 1 , wherein the heart valve stent is configured to be reversibly expandable and collapsible, and said heart valve stent is collapsible upon an external manipulation and withdrawable from the positioning stent by means of an explantation catheter.
Claim 4
Dependent Claim
63 words
3 . The device according to claim 1 or 2 , wherein the positioning stent exhibits an anchorage on its proximal end, in particular anchoring supports, and the anchoring supports are configured such that the positioning stent self-positions into a predefinable position in its expanded state with respect to the patient's heart valve and is held there by means of the anchoring supports.
Claim 5
Dependent Claim
59 words
4 . The device according to claim 3 , wherein the anchoring supports exhibit at least one support strut configured so as to self-position in the pockets of the patient's heart valve in the expanded state of the positioning stent and thus fix the orientation of the positioning stent relative the heart valve in the axial and horizontal directions.
Claim 6
Dependent Claim
32 words
5 . The device according to claim 3 , wherein the positioning stent furthermore exhibits pretensioning elements in order to radially pretension the positioning stent in the position fixed by the anchorage.
Claim 7
Dependent Claim
60 words
6 . The device according claim 3 , wherein the heart valve stent is configured such that the prosthetic heart valve in its expanded state presses the patient's heart valve against the vascular wall, whereby the at least one anchorage of the positioning stent is positioned between the vascular wall and the heart valve expanded by the prosthetic heart valve.
Claim 8
Dependent Claim
95 words
7 . The device according to claim 1 or 2 , wherein the positioning stent comprises at least one engaging element; the heart valve stent comprises at least one retaining element, and in the expanded state of the positioning stent and the fully expanded state of the heart valve stent, the at least one retaining element forms a positive connection with the at least one engaging element of the positioning stent in order to position and hold by means of the positioning stent the prosthetic heart valve in the position defined by the positioning stent.
Claim 9
Dependent Claim
36 words
8 . The device according to claim 7 , wherein the heart valve stent is configured to be reversibly expandable and collapsible, and the positive connection with the positioning stent is disengaged in the collapsed state.
Claim 10
Dependent Claim
61 words
9 . The device according to claim 1 , wherein explantation elements are further provided on the heart valve stent, and said explantation elements work in concert with the heart valve stent such that when the explantation elements are externally manipulated, the positive connection between the heart valve stent and the positioning stent is disengaged and the heart valve stent collapses.
Claim 11
Dependent Claim
50 words
10 . The device according to claim 9 , wherein the explantation elements are configured such that they are engageable by a catheter, and retracting the explantation elements in the catheter disengages the positive connection between the heart valve stent and the positioning stent, whereupon the heart valve stent collapses.
Claim 12
Dependent Claim
45 words
11 . The device according to any one of claims 8 to 10 , wherein the heart valve stent is accommodated in a collapsed state in a cartridge connectable to a catheter, and said heart valve stent is releasable upon a predefinable motion of cartridge.
Claim 13
Dependent Claim
44 words
12 . The device according to claim 11 , wherein a predefinable first motion of the cartridge will only release the prosthetic heart valve to expand, and the retaining element is releasable upon at least one second subsequent motion of the cartridge and/or catheter.
Claim 14
Dependent Claim
33 words
13 . The device according to claim 1 or 2 , wherein the positioning stent further comprises anchoring elements, in particular hooks, in order to anchor the positioning stent in its predefinable position.
Claim 15
Dependent Claim
39 words
14 . The device according to claim 1 or 2 , wherein the heart valve stent further comprises anchoring elements, in particular hooks, in order to anchor the heart valve stent in the position defined by the positioning stent.
Claim 16
Dependent Claim
33 words
15 . The device according to claim 1 or 2 , wherein the positioning stent further comprises markers, in particular x-ray markers, in order to facilitate spatial orientation when inserting said positioning stent.
Claim 17
Dependent Claim
58 words
16 . The device according to claim 1 or 2 , wherein the heart valve stent is configured such that it does not assume its fully expanded state, in which both the prosthetic heart valve as well as the retaining elements are released, until the heart valve stent has positioned into the position predefined by the positioning stent.
Claim 18
Dependent Claim
49 words
17 . The device according to claim 1 or 2 , wherein the positioning stent and/or the heart valve stent further exhibit guide means which are configured such that the heart valve stent is independently guided within the expanded positioning stent into the position predefinable by the positioning stent.
Claim 19
Dependent Claim
56 words
18 . The device according to claim 17 , wherein the guide means are configured as elements tapering to the distal end of the positioning stent and/or the heart valve stent so as to realize a self-adjustment of the heart valve stent in the positioning stent and thus into the position predefined by the positioning stent.
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