POSITIONING AND DETACHING IMPLANTS
First Claim
Patent Images
1. An assembly for deploying an implant into an aneurysm, comprising:
- a tubular member having (a) a member lumen in the tubular member and (b) an opening at a distal end portion of the tubular member;
a coil implant configured for placement into an aneurysm and having (a) a coil;
(b) a coil lumen extending longitudinally within the coil; and
(c) a securing member (i) extending within the coil lumen, (ii) coupled to the coil at a distal region of the securing member, and (iii) having an enlarged proximal portion larger than, and positioned distal to, the opening; and
an elongate member extending in the member lumen, through the opening, and coupled to the enlarged portion;
wherein proximal movement of the elongate member relative to the distal end portion results in the enlarged portion contacting the distal end portion and separating from the elongate member.
2 Assignments
0 Petitions
Accused Products
Abstract
Intravascular implant systems and methods of positioning and detaching implants are described. One such system carries an implant by retaining an engagement member in a position proximal to an aperture at a distal end of the delivery system. The engagement member is retained proximal to the aperture by an elongate member that is coupled to the implant. Once the implant is in a desired implant position, the elongate member is released from the engagement member, and the implant is allowed to move away from the delivery system.
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Citations
64 Claims
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1. An assembly for deploying an implant into an aneurysm, comprising:
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a tubular member having (a) a member lumen in the tubular member and (b) an opening at a distal end portion of the tubular member; a coil implant configured for placement into an aneurysm and having (a) a coil;
(b) a coil lumen extending longitudinally within the coil; and
(c) a securing member (i) extending within the coil lumen, (ii) coupled to the coil at a distal region of the securing member, and (iii) having an enlarged proximal portion larger than, and positioned distal to, the opening; andan elongate member extending in the member lumen, through the opening, and coupled to the enlarged portion; wherein proximal movement of the elongate member relative to the distal end portion results in the enlarged portion contacting the distal end portion and separating from the elongate member. - 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)
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26. A method for deploying an implant into an aneurysm, comprising:
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advancing in a patient'"'"'s vasculature; (i) a tubular member comprising (a) a member lumen in the tubular member and (b) an opening at a distal end portion of the tubular member; (ii) a coil implant configured for placement into an aneurysm and comprising (a) a coil;
(b) a coil lumen extending longitudinally within the coil; and
(c) a securing member (i) extending within the coil lumen, (ii) coupled to the coil at a distal region of the securing member, and (iii) having an enlarged proximal portion larger than, and positioned distal to, the opening; and(iii) an elongate member extending in the member lumen, through the opening, and coupled to the enlarged portion; and withdrawing the elongate member proximally relative to the tubular member, to release the coil at an aneurysm, the enlarged portion thereby (i) contacting the end portion and (ii) separating from the elongate member. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33)
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34. A method, of forming an attachment coupling of an implant assembly, comprising:
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plastically deforming a proximal portion of a coil implant, implantable in an aneurysm, onto an elongate member to create a friction coupling between the proximal portion and the elongate member; wherein the proximal portion is positioned distal to an opening at a distal end portion of a tubular member through which the elongate member extends. - View Dependent Claims (35, 36)
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37. A method, of forming an attachment coupling of an implant assembly, comprising:
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forming a joint between a proximal portion of a coil implant, implantable in an aneurysm, and an elongate member; wherein a tensile strength of the joint is less than (a) a tensile strength of the proximal portion and (b) a tensile strength of the elongate member; wherein the coupling proximal portion is positioned distal to an opening at a distal end portion of a tubular member through which the elongate member extends. - View Dependent Claims (38, 39)
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40. An assembly for deploying an implant into an aneurysmal space in a vessel in a patient'"'"'s body, comprising:
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a tubular member having (a) a member lumen in the tubular member and (b) an opening at a distal end portion of the tubular member; a coil implant having an enlarged portion positioned in the member lumen proximal to the opening; and an elongate member extending in the lumen, the elongate member having a distal segment that extends, in the member lumen, past part of the enlarged portion and contacts a distal-facing surface of the enlarged portion, thereby retaining the enlarged portion in the member lumen; wherein proximal movement of the elongate member relative to the end portion results in deformation of the distal segment to release the enlarged portion from the member lumen. - View Dependent Claims (41, 42, 43, 44, 45, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58)
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46. The assembly of 40, wherein the distal segment extends around opposed surfaces of the enlarged portion.
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59. A method for deploying an implant into an aneurysm, comprising:
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positioning in a patient'"'"'s vasculature; (i) a tubular member having (a) a member lumen in the tubular member and (b) an opening at a distal end portion of the tubular member; (ii) a coil implant having an enlarged portion positioned in the member lumen proximal to the opening; and (iii) an elongate member extending in the lumen, the elongate member having a distal segment that extends past part of the enlarged portion, in the member lumen, and contacts a distal-facing surface of the enlarged portion, thereby retaining the enlarged portion in the member lumen; and moving the elongate member proximally relative to the tubular member to deform the distal segment, thereby releasing the enlarged portion from the member lumen.
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60. A system for placing an implant in an aneurysm, comprising:
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a tubular member having (a) a member lumen in the tubular member and (b) an opening at a distal end portion of the tubular member; a coil implant configured for placement in an aneurysm and having an enlarged portion positioned in the member lumen proximal to the opening; and a elongate member extending in the lumen and having an expandable body (a) positioned at least partially distal to the enlarged portion in the lumen and (b) expandable distal to the enlarged portion to retain the enlarged portion in the lumen. - View Dependent Claims (61, 62, 63, 64)
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Specification