Twist-down implant delivery technologies
First Claim
Patent Images
1. A system for treating a body organ, the system comprising:
- an elongate member having a distal portion;
a prosthesis comprising a near end, a far end and a structure extending therebetween, where the structure comprises a mesh, lattice, or woven structure having an untwisted configuration and a twisted reduced diameter configuration after rotation of the near and far ends relative to one another in a first direction, the prosthesis further comprising a plurality of near mating portions comprising a plurality of projections extending from one of said ends of said prosthesis and a plurality of far mating portions comprising a plurality of projections extending from the other one of said ends of said prosthesis, the prosthesis structure being in said twisted reduced diameter configuration and releaseably mounted on said elongate member through said near and far mating portions; and
a near seat receiving the near mating portions of the prosthesis and a far seat receiving the far mating portions of the prosthesis, said near and far seats being coupled to said elongate member, wherein the near and far mating portions of the prosthesis are nested with the near and far seats such that the near and far ends of the prosthesis are restrained from rotating in a second direction to maintain the prosthesis structure in said twisted reduced diameter configuration.
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Abstract
Medical devices and methods for delivery or implantation of tubular prostheses within hollow body organs and vessels or other luminal anatomy are disclosed. A prosthesis is held in a compressed from upon an inner wire of a delivery guide by twisting the device. The subject technologies may be used in the treatment of atherosclerosis in stenting procedures or for other purposes.
623 Citations
70 Claims
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1. A system for treating a body organ, the system comprising:
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an elongate member having a distal portion; a prosthesis comprising a near end, a far end and a structure extending therebetween, where the structure comprises a mesh, lattice, or woven structure having an untwisted configuration and a twisted reduced diameter configuration after rotation of the near and far ends relative to one another in a first direction, the prosthesis further comprising a plurality of near mating portions comprising a plurality of projections extending from one of said ends of said prosthesis and a plurality of far mating portions comprising a plurality of projections extending from the other one of said ends of said prosthesis, the prosthesis structure being in said twisted reduced diameter configuration and releaseably mounted on said elongate member through said near and far mating portions; and a near seat receiving the near mating portions of the prosthesis and a far seat receiving the far mating portions of the prosthesis, said near and far seats being coupled to said elongate member, wherein the near and far mating portions of the prosthesis are nested with the near and far seats such that the near and far ends of the prosthesis are restrained from rotating in a second direction to maintain the prosthesis structure in said twisted reduced diameter configuration. - 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, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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41. A system for treating a body organ, the system comprising:
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an elongate member having a distal portion; a prosthesis comprising a near end, a far end and a structure extending therebetween, where the structure comprises a mesh, lattice, or woven structure having an untwisted configuration and a twisted reduced diameter configuration after rotation of the near and far ends relative to one another in a first direction, the prosthesis further comprising near mating portions and far mating portions, the prosthesis structure being in said twisted reduced diameter configuration and releaseably mounted on said elongate member through said near and far mating portions; and a near seat receiving the near mating portions of the prosthesis and a far seat receiving the far mating portions of the prosthesis, said near and far seats being coupled to said elongate member, wherein the near and far mating portions of the prosthesis are nested with the near and far seats such that the near and far ends of the prosthesis are restrained from rotating in a second direction to maintain the prosthesis structure in said twisted reduced diameter configuration; wherein the near and far seats each comprise a respective geometry shaped to receive the near and far mating portions respectively; and wherein the near mating portions of the prosthesis comprises a plurality of near projections and the far mating portions of the prosthesis comprises a plurality of far projections, wherein the near projections extend from the near end of the prosthesis and the far projections extend from the far end of the prosthesis, and wherein the near seat geometry comprises a plurality of openings shaped to receive at least one of the near projections and wherein the far seat geometry comprises a plurality of openings shaped to receive at least one of the far projections. - View Dependent Claims (42, 43, 44, 45)
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46. A stent delivery system comprising:
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an elongate stent delivery member having a proximal end and a distal end, said elongate stent delivery member adapted for manipulation through vasculature; a self-expanding non-coil type stent comprising a plurality of closed cells and having a first end, a second end, and structure extending between said first and second ends, said self-expanding stent being twistable from an untwisted tubular configuration where a portion of the stent has a first diameter and said first and second ends have a first relative position to a twisted configuration upon rotation of at least one of said stent ends relative to the other to change said first relative position of said first and second stent ends and to reduce the diameter of said portion of said stent, said self-expanding stent surrounding a portion of said elongate member and being releasably secured thereto while being maintained in said twisted configuration. - View Dependent Claims (47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62)
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63. A stent delivery system comprising:
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an elongate stent delivery member having a proximal end and a distal end, said elongate stent delivery member adapted for manipulation through vasculature; and a self-expanding non-coil type stent comprising a plurality of closed cells, said self-expanding stent having an untwisted tubular configuration and a twisted configuration where the stent is under torsion and has a reduced profile, said stent being releasably secured to said elongate stent delivery member in said twisted reduced profile configuration. - View Dependent Claims (64, 65, 66, 67, 68, 69, 70)
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Specification