Adjustable devices for the occlusion of cardiac defects

• US 5,284,488 A
• Filed: 12/23/1992
• Issued: 02/08/1994
• Est. Priority Date: 12/23/1992
• Status: Expired due to Fees

• Current Assignee: Eleftherios B. Sideris
• Original Assignee: Eleftherios B. Sideris
• Inventors: Sideris, Eleftherios B.
• Primary Examiner(s): Pellegrino, Stephen C.
• Assistant Examiner(s): SCHMIDT, JEFFREY
• Application Number:
  US07/995,817
• Time in Patent Office: 412 Days
• Field of Search: 606/213, 606/215, 606/216, 606/200, 606/232, 606/151, 606/157, 606/1, 128/887, 128/899, 623/1, 623/11
• US Class Current: 606/213
• CPC Class Codes: A61B 17/0057 Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect sutures A61B17/04; closing rectum or urethra near body surface A61F2/0009
• CPC Class Codes: A61B 2017/00575 for closure at remote site, e.g. closing atrial septum defects
• CPC Class Codes: A61B 2017/00592 Elastic or resilient implements
• CPC Class Codes: A61B 2017/00606 Implements H-shaped in cross-section, i.e. with occluders on both sides of the opening
• CPC Class Codes: A61B 90/39 Markers, e.g. radio-opaque or breast lesions markers

Abstract

An intravascular prostheses is delivered transarterially or transvenously to occlude cardiac defects. The defects, which may include the patent ductus arteriosus, the ventricular septal defect and the atrial septal defect. The prostheses is a device having a distal occluder attached to a string and a proximal occluder connected to the string. The occluders are delivered to the heart by known methods. With the distal occluder on the distal side of the defect and the proximal occluder on the proximal side of the defect the occluders are adjusted according to the thickness of the heart structure at the defect. In one embodiment the adjustment is by moving the distal occluder over a series of knots or buttons in the string. In another embodiment the proximal occluder is connected to the distal occluder by an elastic string so that the elastic tension of the strings bring the occluders into position. A radiopaque button is placed upon the string to aid positioning the occluders.

Claims

1. An intracardiac percutaneously deliverable device for the repair of heart defects comprising:

a) an occluder, said occluder including;

i) a foldable foam resin disk,

ii) a coated wire skeleton in the form of an X sutured to the foam disk,

iii) an adjustable loop sutured to the center of the wire skeleton,

b) said adjustable loop is formed by

i) a first loop, connected to said wire skeleton

ii) a middle loop, connected to said first loop

iii) a terminal small loop, connected to said middle loop, and

iv) a radiopaque button attached between two of the loops of said adjustable loop

c) a counter-occluder

d) a loading wire, wherein said loading wire is a fluorocarbon resin coated hollow wire,

e) a long double thread going through the terminal small loop, into one end and through the hollow wire, and tied at the other end of the hollow wire;

wherein the counter-occluder may be pushed along the loading wire toward the occluder and stop at a distance adjusted according the length or thickness of the occluded structure.

2. An intracardiac percutaneously deliverable device for the repair of heart defects comprising:

a) a distal folding disk made of polyurethane or woven fabric on a wire skeleton,

b) a proximal folding disk made of polyurethane or woven fabric on a wire skeleton,

c) the distal folding disk is connected to the proximal folding disk by an elastic thread and a NYLON security thread,

d) the elastic thread has a length of 1-2 mm at rest and 10 mm under tension and the NYLON thread has a length of 10 mm,

e) a release wire, connected to a 1 mm suture loop which is connected to the bottom of the proximal disk.

3. A method of occluding a heart defect through a heart structure comprising the steps of:

a) attaching a distal occluder to a string having a series of buttons,

b) connecting a proximal occluder to the string,

c) placing the distal occluder on a distal side of the heart structure,

d) placing the proximal occluder on a proximal side of the heart structure, and

e) adjusting a length of string between the disks to the approximate thickness of the heart structure by

f) moving the proximal occluder over the series of buttons on the string until the occluders are in the occluding position, thereby

g) holding the distal occluder in an occluding position over the defect on the distal side, and

h) holding the proximal occluder in an occluding position over the defect on the proximal side.

4. A method of occluding a heart defect through a heart structure comprising the steps of:

a) attaching a distal occluder to an elastic string,

b) connecting a proximal occluder to the elastic string,

c) placing the distal occluder on a distal side of the heart structure,

d) placing the proximal occluder on a proximal side of the heart structure, and

e) adjusting a length of string between the disks to the approximate thickness of the heart structure by

f) stretching the elastic string to position the proximal occluder, thereby

g) holding the distal occluder in an occluding position over the defect on the distal side, and

h) holding the proximal occluder in an occluding position over the defect on the proximal side.