US20040122448A1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cardiac devices and methods for percutaneous repair of atrioventricular valves
Assignee: General Hospital Corp
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Filing: 2003-08-13
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Granted: —
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Expires: 2023-08-13
Abstract
Abstract Novel apparatus and minimally invasive methods to treat The present invention provides methods and devices for grasping, stabilizing an d fastening of cardiac valve leaflets to treat atrioventricular valve regurgitation, particularly mitral valve regurgitation, in the context of prolapse and/or flail mitral valve. Independent leaflet grasping elements provide the ability to reposition the leaflets for fastening and enough stability to prevent leaflet movement during fastening.
Inventors
- 👤 Robert Levine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:50
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/00234; A61B17/064; A61B17/068; A61B17/0682; A61B17/0644; A61B2017/00238; A61B2017/00243; A61B2017/00743; A61B2017/00778; A61B2017/00783; A61B2017/00831; A61B2017/00867; A61B17/30; A61B2017/306
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
87 words
1 . A device for repairing a cardiac valve, comprising: a catheter assembly configured to pass from the remote vasculature of a patient to a position within the heart adjacent the cardiac valve; a pair of maneuverable grasping elements independently translatable through the catheter assembly, the grasping elements reversibly and radially extendable from the catheter assembly to capture and reposition portions of two valve leaflets into an apposed position; and fastening mechanism translatable through the catheter assembly to secure the stabilized portions of the two valve leaflets.
Claim 2
Dependent Claim
87 words
1 . A device for repairing a cardiac valve, comprising: a catheter assembly configured to pass from the remote vasculature of a patient to a position within the heart adjacent the cardiac valve; a pair of maneuverable grasping elements independently translatable through the catheter assembly, the grasping elements reversibly and radially extendable from the catheter assembly to capture and reposition portions of two valve leaflets into an apposed position; and fastening mechanism translatable through the catheter assembly to secure the stabilized portions of the two valve leaflets.
Claim 3
Dependent Claim
31 words
2 . The device of claim 1 , wherein the catheter assembly comprises a single catheter having a curved distal end so as to enable valve access retrograde via the aorta.
Claim 4
Dependent Claim
23 words
3 . The device of claim 2 , wherein the distal end is composed at least in part of a shape memory material.
Claim 5
Dependent Claim
53 words
4 . The device of claim 1 , wherein the catheter assembly is comprised of a pair of slidably linked catheters, one of the grasping elements disposed in each catheter, and wherein each catheter includes at least one side port through which the fastening mechanism is extendable and disengagable from the catheter assembly.
Claim 6
Dependent Claim
31 words
5 . The device of claim 1 , wherein the fastening mechanism is radially extendable and disengagable from the catheter assembly through at least one side port of the catheter assembly.
Claim 7
Dependent Claim
29 words
6 . The device of claim 5 , wherein the fastening mechanism comprises a staple or rivet insertable through each of the captured leaflet portions without displacing the leaflets.
Claim 8
Dependent Claim
23 words
7 . The device of claim 5 , wherein the fastening mechanism is composed at least in part of a shape memory material.
Claim 9
Dependent Claim
46 words
8 . The device of claim 5 , further comprising a rectractable portion of the catheter assembly proximate the at least one side port, in its retracted state creating a notch in the catheter assembly through which the fastening mechanism is disengagable from the catheter assembly.
Claim 10
Dependent Claim
39 words
9 . The device of claim 1 , wherein each of the grasping elements extends from the distal end of the catheter assembly with reverse deformation so as to clip a ventricular surface of one of the valve leaflets.
Claim 11
Dependent Claim
59 words
10 . The device of claim 9 , further comprising: a pair of steerable grasping elements independently translatable through the catheter assembly, each grasping element reversibly and radially extendable from one of at least two opposed side ports in the catheter assembly with an adjustable deformation so as to grasp an atrial surface of one of the valve leaflets.
Claim 12
Dependent Claim
44 words
11 . The device of claim 1 , wherein each of the grasping elements extends from one of at least two opposed side ports in the catheter assembly with a deformation so as to clip a ventricular surface of one of the valve leaflets.
Claim 13
Dependent Claim
43 words
12 . The device of claim 1 , wherein each of the grasping elements extends from one of at least two opposed side ports in the catheter assembly with an adjustable deformation so as to grasp an atrial surface of the valve leaflets.
Claim 14
Dependent Claim
24 words
13 . The device of claim 12 , wherein a pair of operable jaws are disposed on each distal end of the grasping elements.
Claim 15
Dependent Claim
22 words
14 . The device of claim 12 , wherein a suction assembly is disposed on each distal end of the grasping elements.
Claim 16
Dependent Claim
22 words
15 . The device of claim 1 , wherein the grasping elements are composed at least in part of shape memory material.
Claim 17
Dependent Claim
22 words
16 . The device of claim 1 , further comprising an introducer catheter for advancing the catheter assembly toward the cardiac valve.
Claim 18
Dependent Claim
31 words
17 . The device of claim 16 , wherein the introducer catheter further comprises a directing arm through which the catheter assembly is maneuverable to a position proximate the cardiac valve.
Claim 19
Dependent Claim
29 words
18 . The device of claim 16 , wherein the introducer catheter further comprises a means for temporarily stabilizing the position of the introducer catheter within the left ventricle.
Claim 20
Dependent Claim
40 words
19 . The device of claim 18 , wherein the stabilization means comprises one or more contact elements reversibly extendable from the introducer catheter so as to contact an internal surface of the heart cavity at one or more points.
Claim 21
Dependent Claim
22 words
20 . The device of claim 19 , wherein the one or more contact elements are composed of shape memory elastic material.
Claim 22
Dependent Claim
24 words
21 . The device of claim 1 , further comprising an imaging device oriented so as to image a region near the cardiac valve.
Claim 23
Dependent Claim
55 words
22 . The device of claim 1 , further comprising: a capture triggering mechanism including one or more sensors for detecting the position of the valve leaflets with respect to the grasping elements, wherein the grasping elements extend in response to an indication that the leaflets are within a predetermined distance from the grasping elements.
Claim 24
Dependent Claim
75 words
23 . A method for repairing a cardiac valve, comprising the steps of: advancing a catheter assembly from the remote vasculature of a patient to a position within the heart adjacent the cardiac valve; independently capturing and stabilizing in an apposed position two valve leaflets via a pair of grasping elements translated through the catheter assembly; fastening the two valve leaflets at one or more points; and disengaging the catheter assembly from the valve leaflets.
Claim 25
Dependent Claim
75 words
23 . A method for repairing a cardiac valve, comprising the steps of: advancing a catheter assembly from the remote vasculature of a patient to a position within the heart adjacent the cardiac valve; independently capturing and stabilizing in an apposed position two valve leaflets via a pair of grasping elements translated through the catheter assembly; fastening the two valve leaflets at one or more points; and disengaging the catheter assembly from the valve leaflets.
Claim 26
Dependent Claim
66 words
24 . The method of claim 23 , wherein the catheter assembly is advanced via a pathway selected from the group consisting of: retrograde via the aterial system into the left ventricle, through the venous system and right atrium into the left atrium across the atrial septum, directly through a wall of the heart, and percutaneously through a small incision in the chest wall and pericardium.
Claim 27
Dependent Claim
67 words
25 . The method of claim 23 , wherein the capturing step further comprises the steps of: positioning each grasping element composed at least in part of shape memory material proximate the cardiac valve; and reversibly extruding the grasping elements from the catheter assembly, each grasping element reversibly and radially extending from the catheter assembly so as to clip a portion of one of the valve leaflets.
Claim 28
Dependent Claim
69 words
26 . The method of claim 25 , wherein the capturing step further comprises the steps of: positioning each grasping element proximate the cardiac valve; reversibly and radially extending each of the grasping elements through one of at least two opposed side ports in the catheter assembly; steering each grasping element to a position proximate an atrial surface of one of the valve leaflets; and grasping the atrial surface.
Claim 29
Dependent Claim
24 words
27 . The method of claim 23 , further comprising the step of temporarily stabilizing the position of the catheter assembly within the heart.
Claim 30
Dependent Claim
24 words
28 . The method of claim 23 , further comprising the step of imaging a region near the cardiac valve during the repair method.
Claim 31
Dependent Claim
18 words
29 . The method of claim 28 , wherein the imaging comprises transducing ultrasound energy to the region.
Claim 32
Dependent Claim
23 words
30 . The method of claim 29 , wherein the ultrasound energy is transduced from the chest surface, esophagus, or within the heart.
Claim 33
Dependent Claim
28 words
31 . The method of claim 29 , wherein the ultrasound energy transduced from within the heart is provided by an ultrasound transducer positioned proximate the cardiac valve.
Claim 34
Dependent Claim
27 words
32 . The method of claim 23 , further comprising the step of: triggering the independent capturing of each leaflet based on sensor output indicating leaflet position.
References Cited (Backward Citations)
US4686965A
Cited
US5395367A
Cited
US6129758A
Cited
US6530913B1
Cited
US6269819B1
Cited
US6770083B2
Cited
US6461366B1
Cited
US6165183A
Cited
US6695866B1
Cited
US6352503B1
Cited
US6402679B1
Cited
US6355030B1
Cited
US6432039B1
Cited
US20020013571A1
Cited
US6629534B1
Cited
US6752813B2
Cited
US6312447B1
Cited
US6626930B1
Cited
US20020161378A1
Cited
US6575971B2
Cited
US20030120341A1
Cited
US6540666B1
Cited
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