US2015057654A1PendingUtilityA1
Catheter Apparatuses, Systems, and Methods for Renal Neuromodulation
Assignee: MEDTRONIC ARDIAN LUXEMBOURGPriority: Apr 26, 2010Filed: Jun 26, 2014Published: Feb 26, 2015
Est. expiryApr 26, 2030(~3.7 yrs left)· nominal 20-yr term from priority
A61B 2018/00875A61B 2018/00821A61B 2018/00815A61B 2018/00714A61B 2018/00577A61B 2018/00511A61B 2018/00404A61B 18/20A61B 18/1815A61B 18/082A61B 18/0206A61B 2018/1861A61B 2018/00744A61B 2018/00642A61B 2018/00434A61B 18/1492A61B 18/10A61B 18/02A61B 2018/00023A61B 2018/00791A61M 2205/0266A61M 2025/0183A61B 2018/00011A61B 2018/00214A61F 5/0013A61B 2018/00494A61M 25/0152
58
PatentIndex Score
0
Cited by
0
References
0
Claims
Abstract
Catheter apparatuses, systems, and methods for achieving renal neuromodulation by intravascular access are disclosed herein. One aspect of the present application, for example, is directed to apparatuses, systems, and methods that incorporate a catheter treatment device comprising an elongated shaft. The elongated shaft is sized and configured to deliver an energy delivery element to a renal artery via an intravascular path. Thermal or electrical renal neuromodulation may be achieved via direct and/or via indirect application of thermal and/or electrical energy to heat or cool, or otherwise electrically modulate, neural fibers that contribute to renal function, or of vascular structures that feed or perfuse the neural fibers.
Claims
exact text as granted — not AI-modified1 - 44 . (canceled)
45 . A catheter assembly, comprising:
an elongated shaft having a proximal region and a distal region, wherein the distal region is configured for intravascular delivery to a renal artery of a human patient; a pre-shaped curved member associated with the distal region, wherein the pre-shaped curved member includes a first portion and a second portion and is transformable between a low-profile configuration and an expanded configuration, and wherein, in the expanded configuration, the first portion has a first radius of curvature and the second portion has a second radius of curvature that is different than the first radius of curvature; and an energy delivery element carried by the pre-shaped curved member, wherein, in the expanded configuration, the pre-shaped curved member is configured to position the energy delivery element in apposition with an inner wall of the renal artery.
46 . The catheter assembly of claim 45 wherein the first portion has a first length, and wherein, when the pre-shaped curved member is in the expanded configuration, the first radius of curvature varies along at least a portion of the first length.
47 . The catheter assembly of claim 45 wherein the second portion has a second length, and wherein, when the pre-shaped curved member is in the expanded configuration, the second radius of curvature varies along at least a portion of the second length.
48 . The catheter assembly of claim 45 wherein the first portion has a first length and the second portion has a second length, and wherein, when the pre-shaped curved member is in the expanded configuration:
the first radius of curvature varies along at least a portion of the first length; and
the second radius of curvature varies along at least a portion of the second length.
49 . The catheter assembly of claim 45 wherein the first portion has a first length, and wherein, when the pre-shaped curved member is in the expanded configuration, the first radius of curvature is constant along the first length.
50 . The catheter assembly of claim 45 wherein the first radius of curvature is between 3.5 cm and 11.5 cm.
51 . The catheter assembly of claim 45 wherein the first radius of curvature is between 5 cm and 6 cm.
52 . The catheter assembly of claim 45 wherein the first portion forms a first angle with the elongated shaft between 30 degrees and 135 degrees.
53 . The catheter assembly of claim 52 wherein the first radius of curvature (R O C 1 ) is determined by the equation:
R
O
C
1
=
360
×
(
L
1
)
2
π
×
(
180
-
α1
)
.
wherein L1 is the first length and α1 is the first angle.
54 . The catheter assembly of claim 45 wherein the second portion has a second length, and wherein, when the pre-shaped curved member is in the expanded configuration, the second radius of curvature is constant along the second length.
55 . The catheter assembly of claim 54 wherein the second radius of curvature is between 7 mm and 16 mm.
56 . The catheter assembly of claim 54 wherein the second radius of curvature is between 7 mm and 9 mm.
57 . The catheter assembly of claim 54 wherein the second portion forms a second angle with the first portion between 75 degrees and 135 degrees.
58 . The catheter assembly of claim 57 wherein the second radius of curvature (R O C 2 ) is determined by the equation:
R
O
C
2
=
360
×
(
L
2
)
2
π
×
(
180
-
α2
)
.
wherein L2 is the second length and α2 is the second angle.
59 . The catheter assembly of claim 45 wherein the first portion has a first length and the second portion has a second length less than the first length.
60 . The catheter assembly of claim 45 , further comprising a third portion having a third radius of curvature different than the first radius of curvature and the second radius of curvature.
61 . The catheter assembly of claim 60 wherein the third portion has a third length, and wherein, when the pre-shaped curved member is in the expanded configuration, the third radius of curvature varies along at least a portion of the third length.
62 . The catheter assembly of claim 60 wherein the third portion has a third length, and wherein, when the pre-shaped curved member is in the expanded configuration, the third radius of curvature is constant along the third length.
63 . The catheter assembly of claim 62 wherein the third radius of curvature is between 1 mm and 6 mm.
64 . The catheter assembly of claim 63 wherein the third portion forms a third angle with the second portion between 75 degrees and 135 degrees.
65 . The catheter assembly of claim 64 wherein the third radius of curvature (R O C 3 ) is determined by the equation:
R
O
C
3
=
360
×
(
L
3
)
2
π
×
(
180
-
α3
)
.
wherein L3 is the third length and α3 is the third angle.
66 . The catheter assembly of claim 60 wherein:
the first portion has a first length;
the second portion has a second length; and
the third portion has a third length,
wherein the first, second, and third lengths are different.
67 . The catheter assembly of claim 60 wherein:
the first portion has a first length;
the second portion has a second length less than the first length; and
the third portion has a third length less than the second length.
68 . The catheter assembly of claim 45 wherein the energy delivery element is a single electrode.
69 . The catheter assembly of claim 45 wherein the energy delivery element extends from a distal end of the pre-shaped curved member.
70 . The catheter assembly of claim 45 wherein a portion of the pre-shaped curved member is linear.
71 . A catheter assembly, comprising:
an elongated shaft having a proximal region and a distal region, wherein the distal region is configured for intravascular delivery to a renal artery of a human patient; and a pre-shaped curved member associated with the distal region, wherein—
the pre-shaped curved member includes a first portion extending from the elongated shaft and a second portion extending from the first portion,
the pre-shaped curved member is transformable between a low-profile configuration and an expanded configuration, and wherein, in the expanded configuration—
the first portion forms a first angle with the elongated shaft; and
the second portion forms a second angle with the first portion different than the first angle;
an energy delivery element carried by the pre-shaped curved member, wherein, in the expanded configuration, the pre-shaped curved member is configured to position the energy delivery element in apposition with an inner wall of the renal artery.
72 . The catheter assembly of claim 71 wherein the pre-shaped curved member further includes a third portion extending from the second portion, and wherein, in the expanded configuration, the third portion forms a third angle with the second portion.
73 . The catheter assembly of claim 72 wherein the third angle is different than the first and second angles.Join the waitlist — get patent alerts
Track US2015057654A1 — get alerts on status changes and closely related new filings.
We store only your email — no account needed. See our privacy policy.