Device for closing a septal defect
First Claim
1. An apparatus for permanently closing off a septal defect, the apparatus comprising:
- a. a plug comprising a polymeric material which is cured or hardened in situ, said plug being unitary in construction and having a first end and a second end, the plug being directly introduced into the area of a septal defect;
b. a catheter having a first end and a second end, the catheter being adapted to carry and release the plug;
c. means for releasably securing the plug to the catheter;
whereby the plug is delivered to the defect area by the catheter, placed in the septal defect, released from the catheter and cured or hardened in situ, whereby the hardened plug remains, plugging the defect.
2 Assignments
0 Petitions
Accused Products
Abstract
A device for closing off a septal defect including a polymeric self-hardening material in a specific conformation which is delivered by a catheter device to the area of defect either directly on the cardiac tissue or into a balloon which spans both surfaces of the defect, and hardened in-situ by change in pH or ionic concentration, organic solvents, by permeation of a secondary material capable of precipitation, or by exposure to heat, light or laser energy. In blood, the device may be hardened through photopolymerization or a cooperative effect of coagulation, precipitation or ionization. The device can be made of biodegradable material impregnated with growth factors, mitogenic factors or other determinants which can improve tissue growth such that tissue ingrowth can occur over a period of time. The catheter itself may be an ultrasonic imaging catheter.
1175 Citations
46 Claims
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1. An apparatus for permanently closing off a septal defect, the apparatus comprising:
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a. a plug comprising a polymeric material which is cured or hardened in situ, said plug being unitary in construction and having a first end and a second end, the plug being directly introduced into the area of a septal defect; b. a catheter having a first end and a second end, the catheter being adapted to carry and release the plug; c. means for releasably securing the plug to the catheter;
whereby the plug is delivered to the defect area by the catheter, placed in the septal defect, released from the catheter and cured or hardened in situ, whereby the hardened plug remains, plugging the defect. - View Dependent Claims (2, 3, 4, 5, 6, 16)
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7. An apparatus for closing off a septal defect, the apparatus comprising:
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a. a plug having a first end and a second end, the plug being directly introduced into the area of a septal defect; and b. a catheter having a first end and a second end, the catheter being adapted to carry and release the plug, said catheter including a corkscrew at its second end whereby the plug is releasably secured thereto; whereby the plug is delivered to the defect area by the catheter, placed in the septal defect and released from the catheter so it remains, plugging the defect.
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8. An apparatus for closing off a septal defect, the apparatus comprising:
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a. a plug having a first end and a second end, the plug being directly introduced into the area of a septal defect; b. a catheter having a first end and a second end, the catheter being adapted to carry and release the plug, said catheter further comprising a threaded protrusion at its second end adapted to mate with a threaded bore located at the first end of the plug, whereby the plug is releasably secured to the catheter; whereby the plug is delivered to the defect area by the catheter, placed in the septal defect and released from the catheter so it remains, plugging the defect.
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9. An apparatus for closing off a septal defect, the apparatus comprising:
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a. a plug having a first end and a second end, said plug comprising a balloon filled with polymeric foam, the plug being directly introduced into the area of a septal defect; b. a catheter having a first end and a second end, the catheter being adapted to carry and release the plug; c. means for releasably securing the plug to the catheter; whereby the plug is delivered to the defect area by the catheter, placed in the septal defect and released from the catheter so it remains, plugging the defect. - View Dependent Claims (10, 11, 12)
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13. An apparatus for closing off a septal defect, the apparatus comprising:
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a. a plug having a first end and a second end, the plug being directly introduced into the area of a septal defect, said plug further comprising; i. a dual-lobed balloon made of polymeric material; and ii. a liquid solution which is introduced into the balloon at an elevated temperature and hardens into a gel upon cooling in-situ to body temperature; b. a catheter having a first end and a second end, the catheter being adapted to carry and release the plug; c. means for releasably securing the plug to the catheter; whereby the plug is delivered to the defect area by the catheter, placed in the septal defect and released from the catheter so it remains, plugging the defect. - View Dependent Claims (14, 15, 17, 18)
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19. An apparatus for closing off a septal defect, the apparatus comprising;
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a. a catheter having a first end and a second end, the catheter including at its second end a balloon having a specific conformation adapted to fit securely into the defect upon being positioned therein and substantially close it, b. a plug having a first end and a second end, the plug comprising a sleeve which encases the balloon, said catheter being adapted to carry and release the plug, said plug being directly introduced into the area of a septal defect, said sleeve further being made of a deformable polymeric material, said sleeve being permanently deformed by the balloon within the defect in the shape of a plug, leaving the defect substantially plugged after deflation and removal of the balloon; whereby the plug is delivered to the defect area by the catheter, placed in the septal defect and released from the catheter so it remains, plugging the defect. - View Dependent Claims (20, 21, 22, 23)
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24. An apparatus for closing off a septal defect, the apparatus comprising:
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a. a catheter having a first end and a second end, said catheter including at its second end a balloon having a specific conformation adapted to fit securely into the defect upon being positioned therein and substantially close it; b. a plug having a first end and a second end, the plug being directly introduced into the area of a septal defect, the catheter being adapted to carry and release the plug, the plug comprising a deformable sleeve-like mesh of a bioabsorbable polymeric material, the mesh contacting the surrounding surface area of the septal defect when the balloon is inserted therein and inflated, said sleeve-like mesh encasing the balloon for delivery thereof, whereby the sleeve-like mesh may be delivered to the defect and permanently deployed by the balloon, leaving a mesh across the defect after deflation and removal of the balloon. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 38)
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35. An apparatus for closing off a septal defect, the apparatus comprising:
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a. a plug having a first end and a second end, said plug comprising a compressible polymeric foam made of a bioabsorbable material that reacts to heat, light, alterations in pH or chemical reactants, the plug being directly introduced into the area of a septal defect; b. a catheter having a first end and a second end, the catheter being adapted to carry and release the plug; c. means for releasably securing the plug to the catheter; whereby the plug is delivered to the defect area by the catheter, placed in the septal defect and released from the catheter so it remains, plugging the defect. - View Dependent Claims (36, 37, 39, 40, 41, 42, 43)
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44. An apparatus for closing off a septal defect, the apparatus comprising:
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a. a plug having a first end and a second end, said plug being made of a bioabsorbable polymeric material that reacts to light and is hardened by photopolymerization, the plug being directly introduced into the area of a septal defect; b. a catheter having a first end and a second end, the catheter being adapted to carry and release the plug; c. means for releasably securing the plug to the catheter; whereby the plug is delivered to the defect area by the catheter, placed in the septal defect and released from the catheter so it remains, plugging the defect.
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45. An apparatus for permanently closing off a septal defect, the apparatus comprising:
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a. a plug comprising a polymeric material which is cured or hardened in situ, said plug being unitary in construction and having a first end and a second end, the plug being directly introduced into the area of a septal defect; b. a catheter having a first end and a second end, the catheter being adapted to carry and release the plug; c. means for releasably securing the plug to the catheter;
whereby the plug is delivered to the defect area by the catheter, placed in the septal defect, released from the catheter and cured or hardened in situ, whereby the hardened plug remains, plugging the defect. - View Dependent Claims (46)
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Specification