US20020183841A1 — Method and apparatus for reducing mitral regurgit…

Claim 1

Independent Claim 193 words

1 . Apparatus for reducing mitral regurgitation, said apparatus comprising: a cinching device comprising a distal anchor, a proximal anchor and a flexible body extending therebetween, said distal anchor being adapted to be positioned distal to the distal end of the coronary sinus and the proximal anchor being adapted to be positioned at the coronary ostium, with the flexible body extending through said coronary sinus between said distal anchor and said proximal anchor, and further wherein at least one of said distal anchor and said proximal anchor is configured for ratcheting action relative to said flexible body, whereby the length of body between said distal anchor and said proximal anchor may be reduced, whereby when said distal anchor is positioned distal to said distal end of said coronary sinus and said proximal anchor is positioned at said coronary ostium, with the flexible body extending through said coronary sinus between said distal anchor and said proximal anchor, and said body is thereafter cinched so as to reduce the length of body between said distal anchor and said proximal anchor, a force may be exerted on the posterior annulus so as to reduce mitral regurgitation.

Claim 2

Dependent Claim 193 words

1 . Apparatus for reducing mitral regurgitation, said apparatus comprising: a cinching device comprising a distal anchor, a proximal anchor and a flexible body extending therebetween, said distal anchor being adapted to be positioned distal to the distal end of the coronary sinus and the proximal anchor being adapted to be positioned at the coronary ostium, with the flexible body extending through said coronary sinus between said distal anchor and said proximal anchor, and further wherein at least one of said distal anchor and said proximal anchor is configured for ratcheting action relative to said flexible body, whereby the length of body between said distal anchor and said proximal anchor may be reduced, whereby when said distal anchor is positioned distal to said distal end of said coronary sinus and said proximal anchor is positioned at said coronary ostium, with the flexible body extending through said coronary sinus between said distal anchor and said proximal anchor, and said body is thereafter cinched so as to reduce the length of body between said distal anchor and said proximal anchor, a force may be exerted on the posterior annulus so as to reduce mitral regurgitation.

Claim 3

Dependent Claim 29 words

2 . Apparatus according to claim 1 wherein said distal anchor is adapted to be set in the pericardial space adjacent to the distal end of the coronary sinus.

Claim 4

Dependent Claim 33 words

3 . Apparatus according to claim 1 wherein said distal anchor is adapted to be set in the intervening tissue located between the pericardial space and the distal end of the coronary sinus.

Claim 5

Dependent Claim 56 words

4 . Apparatus according to claim 1 wherein said proximal anchor comprises a plurality of radial projections formed on said filament and a head having a central opening therein, the size and construction of said radial projections and said central opening being coordinated so as to enable a ratcheting action between said filament and said head.

Claim 6

Dependent Claim 23 words

5 . Apparatus according to claim 4 wherein said head has a plurality of additional openings therein so as to pass blood therethrough.

Claim 7

Dependent Claim 21 words

6 . Apparatus according to claim 1 wherein said system further comprises a delivery catheter sized to receive said cinching device.

Claim 8

Dependent Claim 18 words

7 . Apparatus according to claim 1 wherein said system further comprises a guidewire and a delivery catheter.

Claim 9

Dependent Claim 20 words

8 . Apparatus according to claim 7 wherein said cinching device comprises a central lumen for receiving said guidewire therein.

Claim 10

Dependent Claim 40 words

9 . Apparatus according to claim 1 wherein said system further comprises a delivery catheter sized to receive said cinching device, and further wherein said cinching device comprises a sharp tip at its distal end, distal to said distal anchor.

Claim 11

Dependent Claim 15 words

10 . Apparatus according to claim 1 wherein said distal anchor comprises an inflatable balloon.

Claim 12

Dependent Claim 193 words

11 . A method for reducing mitral regurgitation, said method comprising the steps of: providing a cinching device comprising a distal anchor, a proximal anchor and a flexible body extending therebetween, said distal anchor being adapted to be positioned distal to the distal end of the coronary sinus and the proximal anchor being adapted to be positioned at the coronary ostium, with the flexible body extending through said coronary sinus between said distal anchor and said proximal anchor, and further wherein at least one of said distal anchor and said proximal anchor is configured for ratcheting action relative to said flexible body, whereby the length of body between said distal anchor and said proximal anchor may be reduced; positioning said distal anchor distal to said distal end of said coronary sinus and positioning said proximal anchor at said coronary ostium, with the flexible body extending through said coronary sinus between said distal anchor and said proximal anchor; and cinching said body so as to reduce the length of body between said distal anchor and said proximal anchor, whereby a force may be exerted on the posterior annulus so as to reduce mitral regurgitation.

Claim 13

Dependent Claim 193 words

11 . A method for reducing mitral regurgitation, said method comprising the steps of: providing a cinching device comprising a distal anchor, a proximal anchor and a flexible body extending therebetween, said distal anchor being adapted to be positioned distal to the distal end of the coronary sinus and the proximal anchor being adapted to be positioned at the coronary ostium, with the flexible body extending through said coronary sinus between said distal anchor and said proximal anchor, and further wherein at least one of said distal anchor and said proximal anchor is configured for ratcheting action relative to said flexible body, whereby the length of body between said distal anchor and said proximal anchor may be reduced; positioning said distal anchor distal to said distal end of said coronary sinus and positioning said proximal anchor at said coronary ostium, with the flexible body extending through said coronary sinus between said distal anchor and said proximal anchor; and cinching said body so as to reduce the length of body between said distal anchor and said proximal anchor, whereby a force may be exerted on the posterior annulus so as to reduce mitral regurgitation.

Claim 14

Dependent Claim 27 words

12 . A method according to claim 11 wherein said distal anchor is set in the pericardial space adjacent to the distal end of the coronary sinus.

Claim 15

Dependent Claim 31 words

13 . A method according to claim 11 wherein said distal anchor is set in the intervening tissue located between the pericardial space and the distal end of the coronary sinus.

Claim 16

Dependent Claim 72 words

14 . A method according to claim 11 wherein said proximal anchor comprises a plurality of radial projections formed on said body and a head having a central opening therein, the size and construction of said radial projections and said opening being coordinated so as to enable a ratcheting action between said body and said head, and further wherein cinching said body is achieved by moving said head relative to said body.

Claim 17

Dependent Claim 23 words

15 . A method according to claim 14 wherein said head has a plurality of openings therein so as to pass blood therethrough.

Claim 18

Dependent Claim 22 words

16 . A method according to claim 11 wherein said cinching device is carried to the coronary sinus inside a delivery catheter.

Claim 19

Dependent Claim 21 words

17 . A method according to claim 11 wherein said cinching device is carried to the coronary sinus over a guidewire.

Claim 20

Dependent Claim 19 words

18 . Apparatus according to claim 1 wherein said distal anchor has an external surface which promotes blood clotting.

Claim 21

Dependent Claim 23 words

19 . Apparatus according to claim 8 wherein said central lumen collapses upon itself to prevent blood leakage from one chamber to another.

Claim 22

Dependent Claim 32 words

20 . A method according to claim 11 wherein said distal anchor is set through the myocardium tissue and into the left ventrical adjacent to the distal end of the coronary sinus.

Method and apparatus for reducing mitral regurgitation

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