US20090276040A1
Active / In Force
US
⏱️ 1.5 years remaining
Device and method for replacing mitral valve
Assignee: Edwards Lifesciences Corp
•
Filing: 2008-05-01
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Granted: —
•
Expires: 2028-05-01
Abstract
Abstract A prosthetic mitral valve assembly and method of inserting the same is disclosed. In certain disclosed embodiments, the prosthetic mitral valve assembly has a flared upper end and a tapered portion to fit the contours of the native mitral valve. The prosthetic mitral valve assembly can include a stent or outer support frame with a valve mounted therein, The assembly can be adapted to expand radially outwardly and into contact with the native tissue to create a pressure fit. One embodiment of a method includes positioning the mitral valve assembly below the annulus such that the annulus itself can restrict the assembly from moving in an upward direction towards the left atrium. The mitral valve assembly is also positioned so that the leaflets of the mitral valve hold the assembly to prevent downward movement of the assembly towards the left ventricle.
Inventors
- 👤 Stanton Rowe
- 👤 Mark Chau
- 👤 Son V. Nguyen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:07
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2412; A61F2/2418; A61B; A61B17/00; A61B17/04; A61B17/0401; A61F2/2427; A61F2/2436; A61F2/2442; A61F2/2454; A61F2/82; A61F2/86; A61F2/90; A61L; A61L27/00; A61L27/36; A61L27/3604; A61L27/3625; A61L27/50; A61B17/00234; A61B2017/00238; A61B2017/00243; A61B2017/0417; A61B2017/0496; A61F2/2457; A61F2210/00; A61F2210/0014; A61F2220/00; A61F2220/0008; A61F2220/0016; A61F2230/00; A61F2230/0002; A61F2230/0028; A61F2230/0054; A61F2230/0063; A61F2230/0067; A61F2230/0073; A61F2230/0078; A61F2250/00; A61F2250/0014; A61F2250/0039; A61L2430/00; A61L2430/20
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
80 words
1 . A prosthetic mitral valve assembly, comprising: a radially-expandable stent including a first portion sized to be held in place by leaflets of a native mitral valve and a second portion having a flared end, the flared end sized to implant above or below an annulus of the mitral valve with a pressure or friction fit, wherein the stent tapers from the flared end to an opposite end of the stent; and a valve portion coupled to the stent
Claim 2
Dependent Claim
80 words
1 . A prosthetic mitral valve assembly, comprising: a radially-expandable stent including a first portion sized to be held in place by leaflets of a native mitral valve and a second portion having a flared end, the flared end sized to implant above or below an annulus of the mitral valve with a pressure or friction fit, wherein the stent tapers from the flared end to an opposite end of the stent; and a valve portion coupled to the stent
Claim 3
Dependent Claim
48 words
2 . The prosthetic mitral valve assembly of claim 1 , wherein the mitral valve assembly is adapted to expand into contact with the native mitral valve tissue to create the pressure or friction fit and secure the mitral valve assembly in a fixed position in the heart.
Claim 4
Dependent Claim
21 words
3 . The prosthetic mitral valve assembly of claim 1 , wherein the valve portion includes a bicuspid or tricuspid valve.
Claim 5
Dependent Claim
22 words
4 . The prosthetic mitral valve assembly of claim 3 , wherein the bicuspid valve includes two leaflets that differ in size.
Claim 6
Dependent Claim
22 words
5 . The prosthetic mitral valve assembly of claim 4 , further including tension members coupled between the leaflets and the stent.
Claim 7
Dependent Claim
30 words
6 . The prosthetic mitral valve assembly of claim 5 , wherein the tension members are coupled at different heights, relative to one another, along a length of the stent.
Claim 8
Dependent Claim
19 words
7 . The prosthetic mitral valve assembly of claim 1 , wherein the stent has a truncated conical shape.
Claim 9
Dependent Claim
24 words
8 . The prosthetic mitral valve assembly of claim 1 wherein the stent includes a non-uniform, cross-sectional shape conforming to the native mitral valve.
Claim 10
Dependent Claim
17 words
9 . The prosthetic mitral valve assembly of claim 1 , wherein the flared end is scalloped.
Claim 11
Dependent Claim
28 words
10 . The prosthetic mitral valve assembly of claim 1 , wherein the prosthetic mitral valve assembly is held in place without clamping onto tissue surrounding the assembly.
Claim 12
Dependent Claim
28 words
11 . The prosthetic mitral valve assembly of claim 1 , wherein the stent includes external prongs to assist in holding the prosthetic mitral valve assembly in place.
Claim 13
Dependent Claim
35 words
12 . The prosthetic mitral valve assembly of claim 1 , wherein the stent and the valve portion are collapsible to a reduced diameter for insertion into the heart on a delivery catheter for implantation.
Claim 14
Dependent Claim
41 words
13 . The prosthetic mitral valve assembly of claim 1 , further including a tether coupled to the stent on one end thereof the tether being configured to couple the stent to a portion of the heart remote from the stent.
Claim 15
Dependent Claim
42 words
14 . The prosthetic mitral valve assembly of claim 11 wherein the valve portion further includes prosthetic leaflets and further including tension members coupled to the prosthetic leaflets for preventing the prosthetic leaflets from everting and reducing stresses induced by ventricular contraction.
Claim 16
Dependent Claim
43 words
15 . The prosthetic mitral valve assembly of claim 14 , wherein the tension members are coupled to the prosthetic leaflets at a first end of the tension members and coupled at an opposite end to the stent or to a patient's heart.
Claim 17
Dependent Claim
41 words
16 . The prosthetic mitral valve assembly of claim 14 , wherein the tension members are coupled to the stent at a first end of the tension members and coupled at an opposite end to a portion of the patient's heart.
Claim 18
Dependent Claim
134 words
17 . A method of implanting a prosthetic mitral heart valve, comprising: inserting a prosthetic mitral valve assembly in a collapsed state into a heart using a delivery catheter; expanding the mitral valve assembly; and positioning the mitral valve assembly within a native valve so that solely pressure exerted radially outward by the mitral valve assembly holds the mitral valve assembly in position; wherein positioning the mitral valve assembly includes pulling the mitral valve assembly from the left atrium so that a flared end of the mitral valve assembly sits below an annulus of the native mitral valve and wherein the mitral valve assembly is held in place solely through radial outward pressure from the mitral valve assembly and contact between the native mitral valve leaflets and the outer surface of the valve assembly.
Claim 19
Dependent Claim
134 words
17 . A method of implanting a prosthetic mitral heart valve, comprising: inserting a prosthetic mitral valve assembly in a collapsed state into a heart using a delivery catheter; expanding the mitral valve assembly; and positioning the mitral valve assembly within a native valve so that solely pressure exerted radially outward by the mitral valve assembly holds the mitral valve assembly in position; wherein positioning the mitral valve assembly includes pulling the mitral valve assembly from the left atrium so that a flared end of the mitral valve assembly sits below an annulus of the native mitral valve and wherein the mitral valve assembly is held in place solely through radial outward pressure from the mitral valve assembly and contact between the native mitral valve leaflets and the outer surface of the valve assembly.
Claim 20
Dependent Claim
33 words
18 . The method of claim 17 , wherein inserting includes inserting the catheter through an apex of the heart into the left ventricle, through the mitral valve and into the left atrium.
Claim 21
Dependent Claim
82 words
19 . An apparatus for replacement of a mitral valve, comprising: a stent having an upper end, a lower end, and an aperture there through extending from the upper to the lower end; a valve having a plurality of leaflets mounted within the stent; and at least one tension member connected at one end to at least one of the leaflets and connected at another end to the stent to lessen the amount of stress transferred to the at least one leaflet.
Claim 22
Dependent Claim
82 words
19 . An apparatus for replacement of a mitral valve, comprising: a stent having an upper end, a lower end, and an aperture there through extending from the upper to the lower end; a valve having a plurality of leaflets mounted within the stent; and at least one tension member connected at one end to at least one of the leaflets and connected at another end to the stent to lessen the amount of stress transferred to the at least one leaflet.
Claim 23
Dependent Claim
30 words
20 . The apparatus of claim 19 , wherein the stent has prongs on an outer surface thereof to assist in securing the stent when in contact with native tissue.
Claim 24
Dependent Claim
15 words
21 . The apparatus of claim 19 , wherein the valve is bicuspid or tricuspid.
Claim 25
Dependent Claim
17 words
22 . The apparatus of claim 19 , wherein the bicuspid valve includes leaflets of different sizes.
Claim 26
Dependent Claim
17 words
23 . The apparatus of claim 19 , wherein the upper end of the stent is scalloped.
Claim 27
Dependent Claim
24 words
24 . The apparatus of claim 19 , wherein the stent and the valve are collapsible for insertion into the heart on a catheter.
Claim 28
Dependent Claim
40 words
25 . The apparatus of claim 19 , wherein the at least one tension member comprises a plurality of tension members, each having a first end connected to one of the leaflets and a second end connected to the valve.
References Cited (Backward Citations)
US3409013A
Cited
US3587115A
Cited
US3548417A
Cited
US3671979A
Cited
US3657744A
Cited
US3714671A
Cited
US3755823A
Cited
US4035849A
Cited
US4106129A
Cited
US4056854A
Cited
US4297749A
Cited
US4222126A
Cited
US4265694A
Cited
US4574803A
Cited
US4343048A
Cited
US4373216A
Cited
US4339831A
Cited
US4470157A
Cited
US4345340A
Cited
US4406022A
Cited
US4655771A
Cited
US4655771B1
Cited
US4605407A
Cited
US4535483A
Cited
US4612011A
Cited
US4787899A
Cited
US5026366A
Cited
US4592340A
Cited
US4979939A
Cited
US4643732A
Cited
US4759758A
Cited
US4797901A
Cited
US4733665A
Cited
US4733665B1
Cited
US4733665C2
Cited
US4922905A
Cited
US4692164A
Cited
US4878906A
Cited
US4777951A
Cited
US4883458A
Cited
US4878495A
Cited
US4796629A
Cited
US4829990A
Cited
US4851001A
Cited
US5032128A
Cited
US5080668A
Cited
US5007896A
Cited
US4856516A
Cited
US4966604A
Cited
US4994077A
Cited
US5609626A
Cited
US5500014A
Cited
US5047041A
Cited
US4986830A
Cited
US5089015A
Cited
US5591185A
Cited
US5037434A
Cited
US5085635A
Cited
US5152771A
Cited
US5282847A
Cited
US5607464A
Cited
US5360444A
Cited
US5295958A
Cited
US5443446A
Cited
US5167628A
Cited
US5397351A
Cited
US5545214A
Cited
US5370685A
Cited
US5756476A
Cited
US5163953A
Cited
US5332402A
Cited
US5549665A
Cited
US5545209A
Cited
US5480424A
Cited
US5728068A
Cited
US5554185A
Cited
US5716417A
Cited
US5571175A
Cited
US6027525A
Cited
US5855601A
Cited
US5855602A
Cited
US5749890A
Cited
US5957949A
Cited
US5855597A
Cited
US5925063A
Cited
US6299637B1
Cited
US6440164B1
Cited
US7329278B2
Cited
US7018408B2
Cited
US6458153B1
Cited
US6358277B1
Cited
US6730118B2
Cited
US6726715B2
Cited
US7101395B2
Cited
US6997950B2
Cited
US7175656B2
Cited
US20070016286A1
Cited
US20050240200A1
Cited
US20060195183A1
Cited
US20060287716A1
Cited
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