Assembly Comprising A Ring For Attachment In A Passage Surrounded By Body Tissue As Well As An Applicator For Fitting The Ring In The Passage
First Claim
1. Assembly comprising:
- a ring having anchoring elements for attaching the ring in a passage surrounded by body tissue, in particular blood vessel tissue;
an applicator for fitting the ring in the passage;
in which the anchoring elements have an anchoring position in which they protrude outwardly with respect to the ring; and
in which the anchoring elements comprise a memory material, such as a memory metal or memory polymer, and are designed so that they can be bent from an anchoring position counter to a spring force into a fitting position and can be frozen in this fitting position by a temperature treatment in order to bend the anchoring elements back from the fitting position by the effect of this spring force into the anchoring position when a predetermined threshold is exceeded; and
in which the applicator is provided distally with a carrier for carrying the ring;
characterized in that,the assembly is provided with an influencing system for influencing the temperature of the anchoring elements of the ring carried by the carrier in such a way that the anchoring elements bend back from the fitting position to the anchoring position by increasing the temperature of the anchoring elements to above the threshold temperature.
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Accused Products
Abstract
The present invention relates to an assembly comprising: a ring having anchoring elements for attaching the ring in a passage surrounded by body tissue, in particular blood vessel tissue. An applicator for fitting the ring in the passage; in which the anchoring elements have an anchoring position in which they protrude with respect to the ring, and in which the anchoring elements comprise a memory material, such as a memory metal or memory polymer, and are designed so that they can be bent from an anchoring position counter to a spring force into a fitting position and can be frozen in this fitting position by a temperature treatment in order to bend the anchoring elements back from the fitting position by the effect of this spring force into the anchoring position when a predetermined threshold temperature is exceeded, and in which the applicator is provided distally with a carrier for carrying the ring. The assembly according to the invention is provided with an influencing system for influencing the temperature of the anchoring elements of the ring carried by the carrier in such a way that the anchoring elements bend back from the fitting position to the anchoring position by increasing the temperature of the anchoring elements to above the threshold temperature.
483 Citations
40 Claims
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1. Assembly comprising:
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a ring having anchoring elements for attaching the ring in a passage surrounded by body tissue, in particular blood vessel tissue; an applicator for fitting the ring in the passage; in which the anchoring elements have an anchoring position in which they protrude outwardly with respect to the ring; and in which the anchoring elements comprise a memory material, such as a memory metal or memory polymer, and are designed so that they can be bent from an anchoring position counter to a spring force into a fitting position and can be frozen in this fitting position by a temperature treatment in order to bend the anchoring elements back from the fitting position by the effect of this spring force into the anchoring position when a predetermined threshold is exceeded; and in which the applicator is provided distally with a carrier for carrying the ring;
characterized in that,the assembly is provided with an influencing system for influencing the temperature of the anchoring elements of the ring carried by the carrier in such a way that the anchoring elements bend back from the fitting position to the anchoring position by increasing the temperature of the anchoring elements to above the threshold temperature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 38, 39, 40)
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29. (canceled)
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30. (canceled)
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31. Heart valve prosthesis comprising:
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a ring member for attachment to body tissue surrounding said ring; one, two, or more valve leaflets arranged inside the ring-member; and a constriction system having anchoring pins for penetrating into the body tissue, the anchoring pins being arranged around the circumference of the ring member and adapted to move, when the pins have fully penetrated into the body tissue, the pins from a first penetrated position in a radial inward direction to a second penetrated position to constrict the body tissue. - View Dependent Claims (32, 33, 34, 35, 36, 37)
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Specification