Catheter with stent and method for the production of a catheter with stent
First Claim
1. A catheter system for introducing and implanting a stent in a body comprising:
- a catheter member having first and second ends, said first end having an inflatable portion, a lumen in fluid communication with said inflatable portion and said second end to provide means for inflating said inflatable portion;
an expandable stent member capable of permanent deformation when expanded, at least a portion of said stent member being attached to said inflatable portion by a bond, whereby upon inflation of said inflatable portion said bond is release from said stent to permit deployment of said stent member and removal of said catheter member.
3 Assignments
0 Petitions
Accused Products
Abstract
A catheter system for the introduction and implantation of a stent comprises a catheter (1) with an expandable portion (2) at its one end, elements at the opposite catheter end intended for communication with means for expanding the expandable portion, and a stent (3) made of a material to which a permanent deformation is imparted when the catheter is expanded until the desired insertion diameter is reached, said stent (3) being arranged around the expandable portion (2) of the catheter, where the stent (3) is adhesively connected to the expandable portion (2) of the catheter with adhesion forces between stent and support which are less powerful than the shear forces with which the expandable portion (2) of the catheter influences the adhesive connection when said portion is expanded, all of the above being obtainable by a method whereby the stent (3) is arranged around the expandable portion (2) of the catheter, the catheter surface is softened, e.g. by heating, whereupon the stent (3) is depressed into the catheter surface.
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Citations
24 Claims
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1. A catheter system for introducing and implanting a stent in a body comprising:
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a catheter member having first and second ends, said first end having an inflatable portion, a lumen in fluid communication with said inflatable portion and said second end to provide means for inflating said inflatable portion;
an expandable stent member capable of permanent deformation when expanded, at least a portion of said stent member being attached to said inflatable portion by a bond, whereby upon inflation of said inflatable portion said bond is release from said stent to permit deployment of said stent member and removal of said catheter member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18, 19, 20)
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15. A method for producing a catheter system for introducing and implanting a stent member, said method comprising the steps of:
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(i) positioning an expandable, permanently 5 deformable tubular shaped stent member around an inflatable portion of a catheter member;
(ii) softening the surface of said inflatable portion; and
(iii) allowing the softened surface to return to its original unsoftened state, thereby adhering to said stent member.
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21. A method for producing a catheter system for introducing and implanting a stent, said method comprising the steps of:
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(i) positioning an expandable, permanently deformable, tubular shaped stent around an inflatable portion of a catheter member; and
(ii) forming an adhesive bond at at least a point of contact between said stent and said inflatable portion, said bond having an elastic modulus which is sufficiently lower than the elastic modulus of the stent and sufficiently similar to the elastic modulus of said inflatable portion such that upon expansion of said inflatable portion said bond will be released from said stent but not from said inflatable portion. - View Dependent Claims (22, 23, 24)
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Specification