Implant system
First Claim
1. A self-expansible structure, for implantation in a body cavity, said structure comprising:
- a generally tubular outline;
a nominal length;
a nominal diameter; and
a transition diameter, at which a constrained behavior of said structure changes so that;
at a constraining diameter smaller than said transition diameter, said structure conforms to the constraint by decreasing the structure'"'"'s diameter, to below the nominal diameter, and elongating beyond the nominal length, and at a constraining diameter larger than said transition diameter but smaller than the nominal diameter, said structure conforms to the constraint by decreasing the structure'"'"'s diameter below the nominal diameter, while substantially maintaining the nominal length, wherein;
said structure is operable for insertion into a body cavity, via a catheter, having a catheter inner diameter smaller than said transition diameter, by decreasing the structure'"'"'s diameter, while elongating, and said structure is operable for implantation in the body cavity, having a cavity inner diameter greater than said transition diameter but smaller than the nominal diameter, by decreasing the structure'"'"'s nominal diameter, while substantially maintaining the nominal length.
1 Assignment
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Accused Products
Abstract
A self-expansible structure for implantation in a body cavity is provided. The structure has a generally tubular outline, a nominal length, a nominal diameter, and a unique behavior under constraint. The unique behavior is expressed by a transition diameter, at which a constrained behavior of the structure changes so that, at a constraining diameter smaller than the transition diameter, the structure conforms to the constraint by decreasing the structure'"'"'s diameter, to below the nominal diameter, and elongating beyond the nominal length, while at a constraining diameter larger than the transition diameter but smaller than the nominal diameter, the structure conforms to the constraint by decreasing the structure'"'"'s diameter below the nominal diameter, while substantially maintaining the nominal length. Thus, the structure is operable for insertion into a body cavity, via a catheter, having a catheter inner diameter smaller than the transition diameter, by decreasing the structure'"'"'s diameter, and elongating, and the structure is operable for implantation in the body cavity, having a cavity inner diameter greater than the transition diameter but smaller than the nominal diameter, by decreasing the structure'"'"'s nominal diameter, while substantially maintaining the nominal length. The value of the transition diameter may be varied and controlled by the manner of constraining in the catheter, during insertion.
In the preferred embodiment, the structure is formed of two closed wire constructions, shaped as symmetric wings, and has no exposed tips. The structure may be a stent. Alternatively, the structure may be an anchor, for mounting an incorporeal device thereon.
73 Citations
74 Claims
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1. A self-expansible structure, for implantation in a body cavity, said structure comprising:
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a generally tubular outline;
a nominal length;
a nominal diameter; and
a transition diameter, at which a constrained behavior of said structure changes so that;
at a constraining diameter smaller than said transition diameter, said structure conforms to the constraint by decreasing the structure'"'"'s diameter, to below the nominal diameter, and elongating beyond the nominal length, and at a constraining diameter larger than said transition diameter but smaller than the nominal diameter, said structure conforms to the constraint by decreasing the structure'"'"'s diameter below the nominal diameter, while substantially maintaining the nominal length, wherein;
said structure is operable for insertion into a body cavity, via a catheter, having a catheter inner diameter smaller than said transition diameter, by decreasing the structure'"'"'s diameter, while elongating, and said structure is operable for implantation in the body cavity, having a cavity inner diameter greater than said transition diameter but smaller than the nominal diameter, by decreasing the structure'"'"'s nominal diameter, while substantially maintaining the nominal length. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. An implant system, comprising:
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a self-expansible structure, for implantation in a body cavity, said structure comprising;
a generally tubular outline;
a nominal length;
a nominal diameter; and
a transition diameter, at which a constrained behavior of said structure changes so that;
at a constraining diameter smaller than said transition diameter, said structure conforms to the constraint by decreasing the structure'"'"'s diameter below the nominal diameter and elongating beyond the nominal length, and at a constraining diameter larger than said transition diameter but smaller than the nominal diameter, said structure conforms to the constraint by decreasing the structure'"'"'s diameter below the nominal diameter, while substantially maintaining the nominal length, wherein;
said structure is operable for insertion into a body cavity, via a catheter, having a catheter inner diameter smaller than said transition diameter, by decreasing the structure'"'"'s diameter, while elongating, and said structure is operable for implantation in the body cavity, having a cavity inner diameter greater than said transition diameter but smaller than the nominal diameter, by decreasing the structure'"'"'s nominal diameter, while substantially maintaining the nominal length; and
an intracorporeal device, mounted on said self-expansible structure and adapted for performing a physiologically related task at the body cavity. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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45. A retrieval system, comprising:
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a self-expansible structure, for implantation in a body cavity, said structure comprising;
a generally tubular outline;
a nominal length;
a nominal diameter; and
a transition diameter, at which a constrained behavior of said structure changes so that;
at a constraining diameter smaller than said transition diameter, said structure conforms to the constraint by decreasing the structure'"'"'s diameter below the nominal diameter and elongating beyond the nominal length, and at a constraining diameter larger than said transition diameter but smaller than the nominal diameter, said structure conforms to the constraint by decreasing the structure'"'"'s diameter below the nominal diameter, while substantially maintaining the nominal length, wherein;
said structure is operable for insertion into a body cavity, via a catheter, having a catheter inner diameter smaller than said transition diameter, by decreasing the structure'"'"'s diameter, while elongating, and said structure is operable for implantation in the body cavity, having a cavity inner diameter greater than said transition diameter but smaller than the nominal diameter, by decreasing the structure'"'"'s nominal diameter, while substantially maintaining the nominal length, wherein;
said structure includes at least one inner component for engaging with a retrieval instrument, and said retrieval system includes a retrieval instrument, mounted on a retrieval catheter, adapted for percutaneous insertion into the body cavity, for engaging with said inner component and for retrieving said structure. - View Dependent Claims (46)
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47. A method of implanting a self-expansible structure, comprising:
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providing a self-expansible structure, for implantation in a body cavity, said structure comprising;
a generally tubular outline;
a nominal length;
a nominal diameter; and
a transition diameter, at which a constrained behavior of said structure changes so that;
at a constraining diameter smaller than said transition diameter, said structure conforms to the constraint by decreasing the structure'"'"'s diameter below the nominal diameter and elongating beyond the nominal length, and at a constraining diameter larger than said transition diameter but smaller than the nominal diameter, said structure conforms to the constraint by decreasing the structure'"'"'s diameter below the nominal diameter, while substantially maintaining the nominal length;
constraining said structure within a catheter, having a catheter diameter smaller than said transition diameter, wherein said structure conforms to said catheter by decreasing the structure'"'"'s diameter and elongating;
inserting said catheter and structure to a body cavity, having a cavity diameter larger than said transition diameter but smaller than the nominal diameter; and
deploying said structure in the body cavity, wherein said structure conforms to the cavity by decreasing the structure'"'"'s diameter, while substantially maintaining the nominal length. - View Dependent Claims (48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68)
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69. A self-expansible structure, for implantation in a body cavity, wherein said self-expansible structure is formed of at least one closed wire construction, thus having no exposed tips.
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70. A self-expansible structure, for implantation in a body cavity, wherein said self-expansible structure is symmetric with respect to a plane, orthogonal to a length axis of said structure and crossing said length axis at a point of midlength of said structure.
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71. A self-expansible structure, for implantation in a body cavity, wherein;
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said self-expansible structure is formed of at least one closed wire construction, thus having no exposed tips; and
said self-expansible structure is symmetric with respect to a plane, orthogonal to a length axis of said structure and crossing said length axis at a point of midlength of said structure.
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72. An implant system comprising:
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a self-expansible structure, for implantation in a body cavity, wherein said self-expansible structure is formed of at least one closed wire construction, thus having no exposed tips; and
an intracorporeal device, mounted on said self-expansible structure and adapted for performing a physiologically related task at the body cavity.
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73. An implant system comprising:
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a self-expansible structure, for implantation in a body cavity, wherein said self-expansible structure is symmetric with respect to a plane, orthogonal to a length axis of said structure and crossing said length axis at a point of midlength of said structure; and
an intracorporeal device, mounted on said self-expansible structure and adapted for performing a physiologically related task at the body cavity.
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74. An implant system comprising:
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a self-expansible structure, for implantation in a body cavity, wherein;
said self-expansible structure is formed of at least one closed wire construction, thus having no exposed tips; and
said self-expansible structure is symmetric with respect to a plane, orthogonal to a length axis of said structure and crossing said length axis at a point of midlength of said structure; and
an intracorporeal device, mounted on said self-expansible structure and adapted for performing a physiologically related task at the body cavity.
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Specification