Expandable transluminal graft prosthesis for repairs of aneurysm and method for implanting
First Claim
1. A device for grafting a prosthesis to a wall of a lumen, said device comprising:
- a) a tubular introducer sheath having a longitudinal bore;
b) a prosthesis comprising a tubular graft having a longitudinal bore and disposed in the longitudinal bore of said tubular introducer sheath, said graft being expandable radially to substantially conform to an interior wall of a lumen;
a self expanding spring assembly having a compressed state and attached to said tubular graft for expanding said graft so that it substantially conforms to an interior wall of a lumen after said introducer sheath has been removed from said self expanding spring assembly, said introducer sheath containing said self expanding spring assembly in said compressed state when said spring assembly is positioned in said longitudinal bore of said introducer sheath; and
anchoring means for attaching said graft to an interior wall of a lumen;
c) tubular carrier means having a longitudinal bore and disposed in the longitudinal bore of said tubular graft, said carrier means also having a plurality of apertures;
d) central control means for maintaining an axial position of said prosthesis during removal of said introducer sheath, said central control means being disposed in the longitudinal bore of said tubular carrier means; and
e) mooring loops engaging said prosthesis and passing through said apertures in said tubular carrier means to engage said central control means.
1 Assignment
0 Petitions
Accused Products
Abstract
A transluminal grafting system for grafting a prosthesis to the wall of a lumen includes a tubular graft provided with spring assemblies and anchoring barbs. The prothesis is mounted on an apertured tubular carrier and a central control means is inserted into the bore of the apertured carrier. Mooring loops are attached to the prothesis, pass through the apertures of the tubular carrier, and engage the central control means. An introducer sheath covers the system for smooth insertion into a lumen. When the graft has been positioned, the central control means maintains the axial position of the prosthesis. When the introducer sheath is pulled, the prostheis is exposed and the spring assemblies return to an expanded state and anchor the graft against the internal wall of the lumen.
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Citations
24 Claims
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1. A device for grafting a prosthesis to a wall of a lumen, said device comprising:
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a) a tubular introducer sheath having a longitudinal bore; b) a prosthesis comprising a tubular graft having a longitudinal bore and disposed in the longitudinal bore of said tubular introducer sheath, said graft being expandable radially to substantially conform to an interior wall of a lumen; a self expanding spring assembly having a compressed state and attached to said tubular graft for expanding said graft so that it substantially conforms to an interior wall of a lumen after said introducer sheath has been removed from said self expanding spring assembly, said introducer sheath containing said self expanding spring assembly in said compressed state when said spring assembly is positioned in said longitudinal bore of said introducer sheath; and anchoring means for attaching said graft to an interior wall of a lumen; c) tubular carrier means having a longitudinal bore and disposed in the longitudinal bore of said tubular graft, said carrier means also having a plurality of apertures; d) central control means for maintaining an axial position of said prosthesis during removal of said introducer sheath, said central control means being disposed in the longitudinal bore of said tubular carrier means; and e) mooring loops engaging said prosthesis and passing through said apertures in said tubular carrier means to engage said central control means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for engrafting a prosthesis to a wall of a lumen comprising the steps of:
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a) providing an access to the lumen; b) providing a device for engrafting said prosthesis comprising; a tubular introducer sheath having a longitudinal bore; a tubular graft having a longitudinal bore and disposed in the longitudinal bore of said tubular introducer sheath, said graft being expandable radially to substantially conform to an interior wall of a lumen; a self expanding spring assembly having a compressed state and attached to said tubular graft for expanding said graft so that it substantially conforms to an interior wall of a lumen when said introducer sheath has been removed from said self expanding spring assembly, said introducer sheath containing said self expanding spring assembly in said compressed state when said spring assembly is positioned in said longitudinal bore of said introducer sheath; anchoring means for attaching said graft to an interior wall of a lumen; tubular carrier means having a longitudinal bore and disposed in the longitudinal bore of said tubular graft, said tubular carrier means also having a plurality of apertures; central control means for maintaining an axial position of said prosthesis during removal of said introducer sheath, said central control means being disposed in the longitudinal bore of said tubular carrier means; and mooring loops engaging said prosthesis and passing through said apertures in said tubular carrier means to engage said central control means; c) inserting said device into said access and urging said device to a desired location within the lumen; d) withdrawing said tubular introducer sheath to expose said prosthesis; e) allowing said self expanding spring assembly to self expand and substantially conform at least a portion of said graft to an interior wall of the lumen after said introducer sheath has been removed from said self expanding spring assembly; f) disengaging said central control means from said mooring loops; and g) removing said tubular introducer sheath, carrier means, and central control means.
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10. A transluminal arrangement for positioning a prosthesis assembly at a particular position on a wall of a lumen, comprising:
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an introducer sheath having a longitudinal bore therein; a prosthesis assembly including a graft having a longitudinal bore and a self expanding spring assembly having a compressed state, said introducer sheath containing said self expanding spring assembly in said compressed state when said self expanding spring assembly is positioned in said longitudinal bore of said introducer sheath, said self expanding spring assembly radially expanding said graft to substantially conform said graft at a particular position on an interior wall of a lumen after said prosthesis assembly has been positioned in the lumen and said self expanding spring assembly has been released from said compressed state; and means positioned in said bore of said graft for retaining said prosthesis assembly at the particular position in the lumen when withdrawing said introducer sheath from said self expanding spring assembly and releasing said self expanding spring assembly from said compressed state. - View Dependent Claims (11, 12, 18, 19, 20)
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13. A method of transluminally positioning a prosthesis assembly at a particular position on an interior wall of a lumen, comprising the steps of:
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providing access to a lumen; providing an introducer sheath having a longitudinal bore; providing a prosthesis assembly positioned in said longitudinal bore of said introducer sheath and including a graft having a longitudinal bore and a self expanding spring assembly having a compressed state, said introducer sheath containing said self expanding spring assembly in said compressed state when said spring assembly is positioned in said longitudinal bore of said introducer sheath, said self expanding spring assembly radially expanding said graft to substantially conform said graft at a particular position on an interior wall of a lumen after said prosthesis assembly has been positioned in the lumen and said introducer sheath has been withdrawn from said prosthesis assembly releasing said self expanding spring assembly from said compressed state; providing means positioned in said bore of said graft for retaining said prosthesis assembly at the particular position in the lumen; positioning said introducer sheath and said prosthesis assembly positioned in said bore of said introducer sheath through said access to the particular position in the lumen; and withdrawing said introducer sheath from said prosthesis assembly positioned at the particular position in the lumen.
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14. A transluminal arrangement for positioning at a particular position on a wall of a lumen a prosthesis assembly released from an introducer sheath, said transluminal arrangement comprising:
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means for retaining said prosthesis assembly at the particular position in the lumen, said prosthesis assembly including a graft having a longitudinal bore and a self expanding spring assembly having a compressed state, said means for retaining being positioned in said bore of said graft, said introducer sheath containing said self expanding spring assembly in said compressed state when said spring assembly is positioned in said introducer sheath, said self expanding spring assembly radially expanding said graft to substantially conform said graft at a particular position on an interior wall of a lumen after said prosthesis assembly has been positioned in the lumen and said self expanding spring assembly has been released from said compressed state; and means for releasing said prosthesis assembly from said retaining means when positioned at the particular position in the lumen.
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- 15. A transluminal arrangement for transluminally positioning a prosthesis assembly (1,12,31) of predetermined shape and size at a particular position on an internal wall (20) of a lumen, said prosthesis assembly comprising a graft (1) associated with a self expanding spring assembly (12,31) having a compressed state, said transluminal arrangement comprising an outer sheath (4) having a longitudinal bore for surrounding said prosthesis assembly when the latter is located at the particular position, and means (39,39'"'"',21, 26) for retaining said prosthesis assembly at the particular position while said outer sheath is being removed, characterized in that said retaining means has connected thereto an attachment arrangement (39,39'"'"') to be temporarily attached to said prosthesis assembly at least one position remote from a proximal end of said prosthesis assembly and in that said outer sheath maintains said self expanding spring assembly in said compressed state when said self expanding spring assembly is positioned in said longitudinal bore of said outer sheath.
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23. An arrangement for transluminally positioning a prosthesis assembly at a particular position on an internal wall of a lumen, said assembly comprising a graft associated with self expanding spring apparatus having a compressed state, said arrangement comprising an outer sheath having a longitudinal bore for surrounding the said assembly when the latter is at the said particular position and for maintaining said self expanding spring apparatus in said compressed state when said self expanding spring apparatus is positioned in said longitudinal bore of said outer sheath, means for ensuring that the prosthesis assembly is maintained at the said particular position during removal of the outer sheath, said arrangement further comprising releasing means for disabling the ensuring means after the outer sheath has been withdrawn from the self expanding spring apparatus and released said self expanding spring apparatus from said compressed state and the prosthesis assembly has self expanded to the internal wall of the lumen at said particular position.
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24. An arrangement for transluminally positioning a prosthesis assembly at a particular position on an internal wall of a lumen, said assembly comprising a graft associated with self expanding spring apparatus having a compressed state, said arrangement comprising an outer sheath having a longitudinal bore for surrounding the said assembly when the latter is at the said particular position, said outer sheath containing said self expanding spring apparatus in said compressed state when said spring apparatus is positioned in said longitudinal bore of said outer sheath, means for restraining axial movement of the prosthesis assembly during at least partial removal of the outer sheath, and means for disabling the restraining means after the outer sheath has been withdrawn from the self expanding spring apparatus and released said self expanding spring apparatus from said compressed state and the prosthesis assembly has self expanded to the said internal wall.
Specification