Instrument for loosening and cutting through the intima of a blood vessel, and a method therefor
First Claim
Patent Images
1. An instrument for treating a blood vessel comprising:
- means for loosening the intima or tunica which lines the inside of a blood vessel wall from the blood vessel wall, the means for loosening comprising an open-ended loosening ring having a longitudinal axis;
a second ring;
means for cutting through the intima or tunica passing through the rings;
means for supporting the loosening ring;
means for supporting the second ring; and
means for moving the rings with respect to each other along a path transverse to the longitudinal axis of the loosening ring through the relative movement of the means for supporting the loosening and second rings thereby causing the cutting means to cut the intima or tunica passing through the rings.
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Abstract
The invention relates to an instrument for treating a blood vessel, comprising: a loosening ring of such a form as to pass between the wall of the blood vessel and the intima or tunica, which lines the inside of a blood vessel wall, for loosening the intima or tunica from the inside of the blood vessel wall; a cutting ring for cutting through and severing the loose intima at a predetermined distance within the blood vessel; and support elements for supporting the loosening and cutting rings.
37 Citations
17 Claims
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1. An instrument for treating a blood vessel comprising:
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means for loosening the intima or tunica which lines the inside of a blood vessel wall from the blood vessel wall, the means for loosening comprising an open-ended loosening ring having a longitudinal axis; a second ring; means for cutting through the intima or tunica passing through the rings; means for supporting the loosening ring; means for supporting the second ring; and means for moving the rings with respect to each other along a path transverse to the longitudinal axis of the loosening ring through the relative movement of the means for supporting the loosening and second rings thereby causing the cutting means to cut the intima or tunica passing through the rings. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for loosening the intima from a blood vessel and for cutting through and severing the intima at a determined distance comprising:
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making an incision in the blood vessel; placing an instrument in the blood vessel between the blood vessel wall and the intima; moving the instrument through the blood vessel to a distal position, whereby the intima is loosened from the blood vessel wall over a determined distance; cutting through and severing the intima from the blood vessel wall at the distal position without the need to make a second incision in the blood vessel; said cutting through and severing step carried out using an instrument within the blood vessel; and wherein the instrument placing step is carried out using an instrument comprising means for loosening the intima or tunica which lines the inside of a blood vessel wall from the blood vessel wall, the means for loosening comprising a loosening ring having a longitudinal axis;
a second ring;
means for cutting through the intima or tunica passing through the rings;
means for supporting the loosening ring;
means for supporting the second ring; and
means for moving the rings with respect to each other along a path transverse to the longitudinal axis of the loosening ring through the relative movement of the means for supporting the loosening and second rings. - View Dependent Claims (13)
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14. An instrument for treating a blood vessel comprising:
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a base assembly; first and second elongate members, each of the elongate members having a proximal end and a distal end defining a length therebetween, the proximal ends of the elongate members mounted to the base assembly; an open-ended loosening ring attached to the distal end of the first elongate member for loosening a length of intimal lining of a blood vessel from the blood vessel wall; a cutting ring attached to the distal end of the second elongate member; and means for moving the loosening and cutting rings relative to one another along a cutting path transverse to the lengths of the elongate members from an aligned orientation to an offset orientation to sever any tissue passing through the rings. - View Dependent Claims (15, 16, 17)
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Specification