EP0664107A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Vascular prosthesis and device for its application
Assignee: Individual
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Filing: 1995-01-16
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Granted: —
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Expires: 2015-01-16
Abstract
Abstract Vascular prosthesis (1) for the substitution or internal lining of blood vessels of medium and large diameter and to a device for its application which includes a tubular body (2) of biocompatible material that is associated with, at least at one longitudinal end, at least one body at annular development (3), that is disposed substantially coaxial to the tubular body (2) and that is radially expandible for the engagement of the tract of the tubular body (2), which contains the body at annular development (3), against the inner walls of a blood vessel (4) proximal to the segment of the vessel to be substituted, or internally lined, with the prosthesis (1). The body at annular development includes at least one loop (5,6) of at least one wire (7,8) elastically flexible, which is slideably mounted on a support (9) associated to a lateral portion of the tubular body (2). This wire (7,8) is slideable with respect to the support (2) mentioned before to vary the amplitude of the loop (5,6) and tools are predisposed to contrast the wire (7,8) sliding in respect to the support (2) in order to maintain the expansion or contraction, given to the loop (5,6) by means of the controlled sliding of the wire (7,8) relatively to the support (2), at ceasing of the force generating the sliding.
Inventors
- 👤 Stefano Nazari
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 23:29
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61F2/07; A61F2/95; A61F2/9517; A61F2/82; A61F2/86; A61F2/89; A61F2002/075; A61F2002/828; A61F2002/9505; A61F2002/9511
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
189 words
Vascular prosthesis for the substitution or internal lining of blood vessels of medium or large diameter, characterized by the fact of comprising a tubular body made of biocompatible material including, in proximity of one of its longitudinal ends, at least one body at annular development disposed substantially coaxial to said tubular body and radially expandible for the engagement of the tract of said tubular body, containing said body at annular development, against the internal walls of a blood vessel proximal to the segment to be substituted or internally lined, with the prosthesis, said body at annular development being constituted of at least one loop of at least one wire elastically flexible mounted slidingly on a support associated to a lateral portion of said tubular body, said wire being sliding relatively to said support in order to vary the amplitude of said loop, tools being provided for contrast of the sliding of said wire relatively to said support in order to maintain the expansion or contraction, given to said loop by the controlled sliding of said wire relatively to said support, at the ceasing of the force generating the sliding.
Claim 2
Dependent Claim
39 words
Vascular prosthesis, according to claim 1, characterized by the fact that said tubular body presents an other body at annular development, realized in the same way as said body at annular development, in correspondence of the other longitudinal end.
Claim 3
Dependent Claim
134 words
Vascular prosthesis, according to one or more previous claims, characterized by the fact that said body at annular development is constituted by at least two loops of two wires elastically flexible mounted slidingly each on a support associated to a lateral portion of said tubular body, the two supports being sited in zones of said tubular body diametrically opposite one to the other, each wire of said wires being slidable relatively to the corresponding support in order to vary the amplitude of the related loop, tools being provided for contrast of the sliding of said wires relatively to said supports in order to maintain the expansion or the contraction, given to said loops by means of the controlled sliding of said wires relatively to said support, at ceasing of the force generating the sliding.
Claim 4
Dependent Claim
123 words
Vascular prosthesis, according to one or more previous claims, characterized by the fact that said wire describes, internally to said tract of the tubular body, a double loop with a first tract coming out from said support along a direction inclined in respect to a plane which is transversal to said tubular body, with a second tract at annular development linked to said support in a zone spaced from the zone of coming out of said first tract, said second tract of the double loops developing in a plane substantially perpendicular to the axis of said tubular body, and with a third tract coming back into said support in a zone proximal to the zone of coming out of the said first tract.
Claim 5
Dependent Claim
56 words
Vascular prosthesis, according to one or more previous claims, characterized by the fact that at least a wire includes two wires describing each a double loop with said first tract, said second tract and said third tract, the double loops of said two wires being spaced between them parallel to the axis of said tubular body.
Claim 6
Dependent Claim
30 words
Vascular prosthesis, according to one or more of the above claims, characterized by the fact of including tools for positioning of one said double loops in respect to the other.
Claim 7
Dependent Claim
54 words
Vascular prosthesis, according to one or more of the above claims, characterized by the fact that said tools for positioning include segments of wire connecting between them the second tract of said double loops in order to keep them in planes substantially parallel between them and perpendicular to the axis of said tubular body.
Claim 8
Dependent Claim
51 words
Vascular prosthesis, according to one or more of the above claims, characterized by the fact that said support is constituted by a body substantially cylindric sited with its axis substantially parallel to the axis of said tubular body, said wires coming out laterally from said support to make said double loops.
Claim 9
Dependent Claim
76 words
Vascular prosthesis, according to one or more of the above claims, characterized by the fact that the ends of the wires make said loops come out from an axial end of said support and are jointly associated to a little cylinder block of manoeuvre of said wires, said little cylinder block of manoeuvre being mobile at command relatively to said support for the sliding of said wires causing a variation of the amplitude of said loops.
Claim 10
Dependent Claim
90 words
Vascular prosthesis, according to one or more of the above claims, characterized by the fact that said loops of the wires and at least the portion of said support involved by said loops is connected with a first portion of said tubular body, said first portion being constituted by a segment of prosthesis disposed at annular shape and radially expandible, said first portion being associated to the axial end of a second portion substantially cylindric of said tubular body disposed substantially coaxially to the annular disposition of said first portion.
Claim 11
Dependent Claim
46 words
Vascular prosthesis, according to one or more of the above claims, characterized by the fact that said little cylinder block of manoeuvre and the portion of said wires extending from said little cylinder block of manoeuvre to said support are disposed externally to said tubular body.
Claim 12
Dependent Claim
23 words
Vascular prosthesis, according to one or more of the above claims, characterized by the fact that said wires are of harmonic stainless steel.
Claim 13
Dependent Claim
176 words
Device for the application, without the blood flow interruption, of a vascular prosthesis according to one or more of the above claims, characterized by the fact of including a tubular support flexible insertable into the lumen of a blood vessel distal to the tract to be substituted or internally lined with said prosthesis, said tubular support being provided, at its distal end predisposed to be inserted into the blood vessel, of retaining tools of said support and, at its proximal end, predisposed to lie externally to said vessel, of command tools connected, through tools sliding internally to said tubular support, to said at least one wire for its sliding relatively to said support for a variation of the amplitude of said at least one loop for the radial expansion or contraction of said body at annular development, being predisposed tools for deactivation of said tools of retaining of said support and said tools of connection being releasable at command by said at least one wire for the leaving in place of the prosthesis after its application.
Claim 14
Dependent Claim
23 words
Device, according to the claim 13, characterized by the fact of comprising tools of guidance of the prosthesis internally to the blood vessel.
Claim 15
Dependent Claim
50 words
Device according to one or more of the above claims, characterized by the fact that said guiding tools include a cable of guidance connected with one of its ends to said tubular support and axially crossing the prosthesis, the opposite end of said cable of guidance supporting an ogival body.
Claim 16
Dependent Claim
62 words
Device according to one or more of the above claims, characterized by the fact that said tubular support is inserted in such a way that is slidable axially, blood-tightly, internally to a tube partially insertable into said vessel or in lateral branch of said vessel that can be occluded around said tube for the blood tightness during the insertion of the prosthesis
Claim 17
Dependent Claim
80 words
Device according to one or more of the above claims, characterized by the fact that said retaining tools include a retaining cable slidable internally to said tubular support, said retaining cable connecting with its distal end said tubular support to said support, said retaining cable coming out with its proximal end from said tubular support externally to the vessel and being slidable at command along said tubular support to release said support from the distal end of said tubular support.
Claim 18
Dependent Claim
73 words
Device according to one or more of the above claims, characterized by the fact that said command tools include at least one handle connected with the proximal end of said tubular support and connected to said at least one wire by a cable sited slidingly internally to said tubular support, said handle being axially movable relatively to said tubular support for the sliding of said at least one wire relatively to said support.
Claim 19
Dependent Claim
144 words
Device according to one or more of the above claims, characterized by the fact that said command tools include a first handle and a second handle connected to the proximal end of said tubular support, said first handle being connected to a first cable extending internally to said tubular support till to a little cylinder block of manoeuvre fixed to that at least one wire and said second handle being connected to a second cable extending internally to said tubular support and connecting said first cable to said little cylinder block of manoeuvre, said first and second handle being jointly movable relatively to said tubular support for the sliding of said at least one wire relatively to said support or individually to the release of said cable from said little cylinder block of manoeuvre for the leaving of the prosthesis internally to the vessel.
Claim 20
Dependent Claim
31 words
Device according to one or more of the above claims, characterized by the fact of including tools for the fixation of the prosthesis to the lateral surface of said tubular support.
Claim 21
Dependent Claim
70 words
Device according to one or more of the above claims, characterized by the fact that said fixation tools include a fixing button-hole connected to said prosthesis and insertable into a fissure defined in the lateral surface of said tubular support, said button-hole being crossable by said retaining cable for the retention removable, at the action of removal of said retaining cable, of said prosthesis in proximity of said tubular body.
Claim 22
Dependent Claim
31 words
Device according to one or more of the above claims, characterized by the fact of including tools for tightness interposed between said cables and the internal surface of said tubular support.
References Cited (Backward Citations)
DE2805749A1
Cited
EP0544485A1
Cited
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