US20040098121A1
Expired / Lapsed
US
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Patent foramen ovale (PFO) closure with magnetic force
Assignee: NMT Medical Inc
•
Filing: 2003-11-07
•
Granted: —
•
Expires: 2023-11-07
Abstract
Abstract Magnetic force, preferably with one or more permanent magnets, is used to hold together flaps of tissue inside the body, particularly flaps of a PFO. A device or magnets within a device can be retrieved such that no permanent implant is left behind.
Inventors
- 👤 Steven Opolski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:51
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/0057; A61B2017/00575; A61B2017/00592; A61B2017/00606; A61B2017/00615; A61B2017/00831; A61B2017/00876
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
65 words
1 . A method comprising using magnetic force to hold together septum primum and septum secundum of a patent foramen ovale (PFO), including providing on one side of the PFO a first magnet and on the other side of the PFO a block such that the block and the first magnet have a magnetically attractive force to compress septum primum and septum secundum between them.
Claim 2
Dependent Claim
65 words
1 . A method comprising using magnetic force to hold together septum primum and septum secundum of a patent foramen ovale (PFO), including providing on one side of the PFO a first magnet and on the other side of the PFO a block such that the block and the first magnet have a magnetically attractive force to compress septum primum and septum secundum between them.
Claim 3
Dependent Claim
24 words
2 . The method of claim 1 , wherein one or more magnets are introduced to one side of a PFO through a catheter.
Claim 4
Dependent Claim
15 words
3 . The method of claim 1 , wherein the block is a second magnet.
Claim 5
Dependent Claim
22 words
4 . The method of claim 3 , wherein the first and second magnets are held in respective first and second sheaths.
Claim 6
Dependent Claim
17 words
5 . The method of claim 4 , wherein the first and second sheaths are coupled together.
Claim 7
Dependent Claim
29 words
6 . The method of claim 4 , wherein the first and second magnets are coupled together with a flexible material that passes between septum primum and septum secundum.
Claim 8
Dependent Claim
34 words
7 . The method of claim 4 , wherein the first magnet is one of a plurality of magnets within a conduit to produce a flexible magnetic structure on one side of the PFO.
Claim 9
Dependent Claim
38 words
8 . The method of claim 7 , wherein the plurality of magnets within a conduit and a structure including the second magnet are coupled together with a flexible material that passes between septum primum and septum secundum.
Claim 10
Dependent Claim
20 words
9 . The method of claim 1 , wherein the one side of the PFO has a plurality of magnets.
Claim 11
Dependent Claim
46 words
10 . The method of claim 1 , including providing one or more magnets on the one side of a PFO, and further comprising removing the one or more magnets after septum primum and septum secundum have started in-growth around a conduit for holding the magnets.
Claim 12
Dependent Claim
21 words
11 . The method of claim 10 , wherein the magnets are provided in a conduit adapted to discourages tissue in-growth.
Claim 13
Dependent Claim
31 words
12 . The method of claim 1 , including providing one or more magnets on one side of a PFO and leaving the one or more magnets in the body indefinitely.
Claim 14
Dependent Claim
53 words
13 . The method of claim 1 , including providing one or more magnets on one side of a PFO, wherein at least one magnet is a distal end of a spoke of a device with a hub and at least two spokes, with the proximal end of the spokes at the hub.
Claim 15
Dependent Claim
38 words
14 . The method of claim 1 , wherein one or more magnets are provided to a side of the PFO in an inner sheath within an outer sheath, the inner sheath being removable from the outer sheath.
Claim 16
Dependent Claim
18 words
15 . The method of claim 14 , wherein the outer sheath is adapted to encourage tissue in-growth
Claim 17
Dependent Claim
18 words
16 . The method of claim 14 , wherein the outer sheath is made of a bioresorbable material.
Claim 18
Dependent Claim
30 words
17 . The method of claim 16 , wherein the one or more magnets are introduced in a first procedure, and the inner sheath is removed in a second procedure.
Claim 19
Dependent Claim
64 words
18 . A patent foramen ovale (PFO) closure device comprising a first magnet and a block, the block and the first magnet having an attractive force, the device being deployable in a living body such that the first magnet and the block are on opposite sides of the PFO, and use magnetic force to hold together septum primum and septum secundum of the PFO.
Claim 20
Dependent Claim
64 words
18 . A patent foramen ovale (PFO) closure device comprising a first magnet and a block, the block and the first magnet having an attractive force, the device being deployable in a living body such that the first magnet and the block are on opposite sides of the PFO, and use magnetic force to hold together septum primum and septum secundum of the PFO.
Claim 21
Dependent Claim
15 words
19 . The device of claim 18 , wherein the block includes a second magnet.
Claim 22
Dependent Claim
22 words
20 . The device of claim 19 , wherein the first and second magnets are held in respective first and second sheaths.
Claim 23
Dependent Claim
17 words
21 . The device of claim 20 , wherein the first and second sheaths are coupled together.
Claim 24
Dependent Claim
33 words
22 . The device of claim 21 , wherein the sheaths are coupled with a connector adapted to extend from one side of a PFO to another between septum primum and septum secundum.
Claim 25
Dependent Claim
19 words
23 . The device of claim 20 , wherein the first and second sheaths are within an outer sheath.
Claim 26
Dependent Claim
18 words
24 . The device of claim 23 , wherein the outer sheath is adapted to encourage tissue in-growth.
Claim 27
Dependent Claim
18 words
25 . The device of claim 23 , wherein the outer sheath is made of a bioresorbable material.
Claim 28
Dependent Claim
25 words
26 . The device of claim 19 , wherein the device includes a plurality of magnets in a conduit to form a flexible magnetic structure.
Claim 29
Dependent Claim
44 words
27 . The device of claim 18 , further comprising a catheter for delivering the closure device, the closure device being movable from a delivery position in which the device can be provided within the catheter to a deployed position in the living body.
Claim 30
Dependent Claim
34 words
28 . The device of claim 18 , wherein the device has an outer container and an inner container for holding one or more magnets, the inner container being removable from the outer container.
Claim 31
Dependent Claim
26 words
29 . The device of claim 28 , wherein the outer sheath is adapted to encourage in-growth, and the inner container is adapted to inhibit in-growth.
Claim 32
Dependent Claim
27 words
30 . The device of claim 29 , wherein the inner and outer sheaths are adapted to inhibit and encourage in-growth by the use of different materials.
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