US20050043759A1 — Tubular patent foramen ovale (PFO) closure device…

Claim 1

Independent Claim 74 words

1 . An occluder for a defect adapted to be introduced into the body through the vasculature, the occluder having a proximal side and a distal side that cooperate to close the defect, at least one of the proximal and distal sides of the occluder including slits axially formed in the tube to form struts, wherein adjacent slits are offset and the struts form petals when the axially length of the tube is shortened.

Claim 2

Dependent Claim 74 words

1 . An occluder for a defect adapted to be introduced into the body through the vasculature, the occluder having a proximal side and a distal side that cooperate to close the defect, at least one of the proximal and distal sides of the occluder including slits axially formed in the tube to form struts, wherein adjacent slits are offset and the struts form petals when the axially length of the tube is shortened.

Claim 3

Dependent Claim 25 words

2 . The occluder according to claim 1 wherein the slits in the occluder extend along an line parallel to the axis of the tube.

Claim 4

Dependent Claim 22 words

3 . The occluder according to claim 1 wherein the slits in the occluder extend along a helical line along the tube.

Claim 5

Dependent Claim 41 words

4 . The occluder of claim 1 wherein a catch system is adapted to secure the occluder in a deployed position such that the occluder is not secured during delivery and becomes secured in its delivery profile during the delivery process.

Claim 6

Dependent Claim 44 words

5 . The occluder of claim 4 wherein the catch system comprises catch elements that cooperate with a passageway within the occluder such that occluder becomes secured in a deployed state when a portion of the occluder tube is positioned between the catch elements.

Claim 7

Dependent Claim 13 words

6 . The occluder of claim 5 wherein the catch elements are balls.

Claim 8

Dependent Claim 52 words

7 . The occluder of claim 1 wherein the both the proximal side of the occluder and the distal side of the occluder have loops formed by struts and the occluder is adapted to be secured in the heart with tissue between the proximal side and the distal side of the occluder.

Claim 9

Dependent Claim 38 words

8 . The occluder of claim 1 wherein a locking member comprises two locking pieces which are adapted to hold the occluder in the deployed state when the locking pieces cooperate with the central member of the occluder.

Claim 10

Dependent Claim 35 words

9 . The occluder of claim 1 wherein the occluder includes a central portion and the central portion is angled with respect to the plane of the loops of the occluder in the deployed state.

Claim 11

Dependent Claim 25 words

10 . The occluder of claim 9 wherein the angle between the central tube and occluder in the deployed state is not approximately 90 degrees.

Claim 12

Dependent Claim 18 words

11 . The occluder of claim 1 wherein the occluder further comprises tissue scaffolding attached to the loops.

Claim 13

Dependent Claim 29 words

12 . The occluder of claim 1 wherein the loops are formed by slits in a tube and the loops have varying cross section because of the offset slits.

Claim 14

Dependent Claim 90 words

13 . An occluder for a defect comprising a tube adapted to be introduced into the body through the vasculature, the occluder having a proximal side and a distal side that cooperate to close the defect, at least one of the proximal and distal sides include an arrangement of struts according to the pattern: n struts for a first axial distance, 2n slits for a second axial distance, and n struts for a third axial distance, whereby loops are formed from the struts by the axial shortening of the tube.

Claim 15

Dependent Claim 90 words

13 . An occluder for a defect comprising a tube adapted to be introduced into the body through the vasculature, the occluder having a proximal side and a distal side that cooperate to close the defect, at least one of the proximal and distal sides include an arrangement of struts according to the pattern: n struts for a first axial distance, 2n slits for a second axial distance, and n struts for a third axial distance, whereby loops are formed from the struts by the axial shortening of the tube.

Claim 16

Dependent Claim 19 words

14 . The occluder of claim 13 wherein the first, second and third axial distances are approximately the same.

Claim 17

Dependent Claim 23 words

15 . The occluder of claim 13 wherein the second axial distance is greater than either the first or the second axial distance.

Claim 18

Dependent Claim 52 words

16 . The occluder of claim 13 wherein the both the proximal side of the occluder and the distal side of the occluder have loops formed by struts and the occluder is adapted to be secured in the heart with tissue between the proximal side and the distal side of the occluder.

Claim 19

Dependent Claim 37 words

17 . The occluder of claim 16 wherein a catch element is adapted to secure the occluder in a deployed position such that the occluder is not secured during delivery and becomes secured during the delivery process.

Claim 20

Dependent Claim 42 words

18 . The occluder of claim 16 wherein the catch system comprises balls that cooperate with a passageway within the occluder such that occluder becomes secured in a deployed state when a portion of the occluder tube is positioned between the balls.

Claim 21

Dependent Claim 42 words

19 . The occluder of claim 13 further comprising a locking member that includes at least two locking pieces which are adapted to hold the occluder in the deployed state when the locking pieces cooperate with the central member of the occluder.

Claim 22

Dependent Claim 35 words

20 . The occluder of claim 13 wherein the occluder includes a central portion and the central portion is angled with respect to the plane of the loops of the occluder in the deployed state.

Claim 23

Dependent Claim 25 words

21 . The occluder of claim 13 wherein the angle between the central tube and occluder in the deployed state is not approximately 90 degrees.

Claim 24

Dependent Claim 18 words

22 . The occluder of claim 13 wherein the occluder further comprises tissue scaffolding attached to the loops.

Claim 25

Dependent Claim 21 words

23 . The occluder of claim 13 wherein the tube is formed of a sheet that is rolled into a tube.

Claim 26

Dependent Claim 33 words

24 . The occluder of claim 13 wherein the n is 2 and the tube splits into a hemispherical section and then splits into a quarter section and rejoins to a hemispherical section.

Claim 27

Dependent Claim 20 words

25 . The occluder of claim 13 wherein the loops twist when the axial length of the tube is reduced.

Claim 28

Dependent Claim 125 words

26 . An occluder for a defect comprising a tube, a proximal side of the tube adapted to be disposed on the proximal side of the defect and a distal side of the tube adapted to be disposed on the distal side of the defect, a plurality of struts formed from the tube on one of the proximal and distal sides of the tube by a series of slits disposed in the tube along an axial direction, wherein the struts have first length that has a cross-section comprising half the tube, a second length that is split into a cross-section of the tube comprising a quarter of the tube and then a third length that is split into a cross-section comprising half of the tube.

Claim 29

Dependent Claim 125 words

26 . An occluder for a defect comprising a tube, a proximal side of the tube adapted to be disposed on the proximal side of the defect and a distal side of the tube adapted to be disposed on the distal side of the defect, a plurality of struts formed from the tube on one of the proximal and distal sides of the tube by a series of slits disposed in the tube along an axial direction, wherein the struts have first length that has a cross-section comprising half the tube, a second length that is split into a cross-section of the tube comprising a quarter of the tube and then a third length that is split into a cross-section comprising half of the tube.

Claim 30

Dependent Claim 19 words

27 . The occluder of claim 26 wherein the first, second and third axial distances are approximately the same.

Claim 31

Dependent Claim 23 words

28 . The occluder of claim 26 wherein the second axial distance is greater than either the first or the second axial distance.

Claim 32

Dependent Claim 52 words

29 . The occluder of claim 26 wherein the both the proximal side of the occluder and the distal side of the occluder have loops formed by struts and the occluder is adapted to be secured in the heart with tissue between the proximal side and the distal side of the occluder.

Claim 33

Dependent Claim 41 words

30 . The occluder of claim 29 wherein a catch system is adapted to secure the occluder in a deployed position such that the occluder is not secured in a deployed state during delivery and becomes secured during the delivery process.

Claim 34

Dependent Claim 43 words

31 . The occluder of claim 30 wherein the catch sytem comprises catch elements that cooperate with a passageway within the occluder such that occluder becomes locked in a deployed state when a portion of the occluder tube is positioned between the balls.

Claim 35

Dependent Claim 13 words

32 . The occluder of claim 31 wherein the catch elements are balls.

Claim 36

Dependent Claim 208 words

33 . A method for deploying an occluding member that includes a series of loops formed by struts in a tube, the struts being formed by a series of offset slits which are configured to form loops when the axial length of the occluder is shortened, the steps comprising: a) inserting a catheter into a lumen of the body for delivering the occluder, the catheter including a delivery system, b) deploying a distal end of the occluder by pulling on the delivery wire so that the distal part of the occluder forms loops which are disposed along a surface around a defect to be occluded, c) pulling a catch element through an axially central passage of the occluder to lock the distal part of the device in a deployed state, d) deploying a proximal end of the occluder by pulling on the delivery wire so that the proximal part of the occluder forms loops which are disposed along a second surface around the defect to be occluded, e) pulling the catch element through an axially central passage of the occluder to secure proximal part of the device in a deployed state, and, f) disengaging the delivery wire from the occluder and removing the catheter from the delivery location.

Claim 37

Dependent Claim 208 words

33 . A method for deploying an occluding member that includes a series of loops formed by struts in a tube, the struts being formed by a series of offset slits which are configured to form loops when the axial length of the occluder is shortened, the steps comprising: a) inserting a catheter into a lumen of the body for delivering the occluder, the catheter including a delivery system, b) deploying a distal end of the occluder by pulling on the delivery wire so that the distal part of the occluder forms loops which are disposed along a surface around a defect to be occluded, c) pulling a catch element through an axially central passage of the occluder to lock the distal part of the device in a deployed state, d) deploying a proximal end of the occluder by pulling on the delivery wire so that the proximal part of the occluder forms loops which are disposed along a second surface around the defect to be occluded, e) pulling the catch element through an axially central passage of the occluder to secure proximal part of the device in a deployed state, and, f) disengaging the delivery wire from the occluder and removing the catheter from the delivery location.

Claim 38

Dependent Claim 72 words

34 . The method of claim 33 wherein the catch element is a ball and the occluder has a central passage that is configured to secure the ball in the deployed state, wherein, step c) further comprises pulling the ball through the central passage and securing the occluder by adapting the ball and passageway to allow for passage through the central passageway toward the proximal direction and not in the distal direction.

Claim 39

Dependent Claim 78 words

35 . The method of claim 33 wherein the catch element is a ball and the occluder has a central passage that is configured to secure the ball in the deployed state , wherein, step e further comprises pulling the ball through the central passage and securing the occluder by adaping the ball and the passageway to allow for the passage of the ball through the central passageway toward the proximal direction and not in the distal direction.

Claim 40

Dependent Claim 55 words

36 . The method of claim 33 wherein the central passageway has multiple diameters so that a force required to pull the ball through the central passageway to secure the device at step c) is different than the force required to pull the ball through the central passageway to lock the device in step e).

Claim 41

Dependent Claim 21 words

37 . The method of claim 33 where in the occluder is adapted to be delivered as a PFO closure device.

Claim 42

Dependent Claim 65 words

38 . The method of claim 33 wherein at least one of the proximal and distal sides of the tube forming the occluder includes slits axially formed in the tube that form struts, wherein adjacent slits are offset and the struts form petals when the axially length of the tube is shortened and the process of deployment includes shortening the tube along its axial length.

Claim 43

Dependent Claim 55 words

39 . An occluder formed of a tube with slits axially disposed in the tube and extending to the end of the tube, the slits form struts between the slits, wherein when the tube is axially shortened, loops are formed by the struts and the struts are joined at the end to form the loops.

Claim 44

Dependent Claim 55 words

39 . An occluder formed of a tube with slits axially disposed in the tube and extending to the end of the tube, the slits form struts between the slits, wherein when the tube is axially shortened, loops are formed by the struts and the struts are joined at the end to form the loops.

Claim 45

Dependent Claim 14 words

40 . The occluder of claim 39 wherein the struts are joined by adhesive.

Claim 46

Dependent Claim 14 words

41 . The occluder of claim 39 wherein the struts are joined by welding.

Claim 47

Dependent Claim 26 words

42 . The occluder of claim 39 wherein the struts have axially facing ends and the axially facing ends are welded together to form the loops.

Tubular patent foramen ovale (PFO) closure device with catch system

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