FLEXIBLE EMBOLIC DEVICE DELIVERY SYSTEM
First Claim
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1. A device for releasing an embolic assembly at a target site in a vessel of a patient, comprising:
- a core wire comprising a first electrically-conductive substance that is at least partially fixedly encased in a first non-conductive substance and has a proximal and a distal end, its proximal end being connected to an electrical signal generator;
a flexible member having a proximal and a distal end, its proximal end being coupled to the distal end of the core wire;
an embolic assembly having a proximal and a distal end, its proximal end being operatively coupled to the distal end of the flexible member; and
an electrolytic detachment site located between the proximal end of the embolic assembly and a distal end of the first non-conductive substance,wherein the flexible member comprises a first loop interlinked with a second loop, the first loop having a first and a second end, both of which are operatively coupled to the distal end of the core wire, a distal portion of which is optionally bare, and the second loop having a first and a second end, both of which are operatively coupled to the proximal end of the embolic assembly.
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Abstract
The present invention provides an embolic assembly delivery apparatus having superior flexibility characteristics at its distal end, that is, at the point of attachment of the embolic assembly to the delivery apparatus. It also provides a method of using the apparatus to deliver an embolic assembly to a target site in a patient'"'"'s body.
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Citations
6 Claims
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1. A device for releasing an embolic assembly at a target site in a vessel of a patient, comprising:
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a core wire comprising a first electrically-conductive substance that is at least partially fixedly encased in a first non-conductive substance and has a proximal and a distal end, its proximal end being connected to an electrical signal generator; a flexible member having a proximal and a distal end, its proximal end being coupled to the distal end of the core wire; an embolic assembly having a proximal and a distal end, its proximal end being operatively coupled to the distal end of the flexible member; and an electrolytic detachment site located between the proximal end of the embolic assembly and a distal end of the first non-conductive substance, wherein the flexible member comprises a first loop interlinked with a second loop, the first loop having a first and a second end, both of which are operatively coupled to the distal end of the core wire, a distal portion of which is optionally bare, and the second loop having a first and a second end, both of which are operatively coupled to the proximal end of the embolic assembly. - View Dependent Claims (2, 3, 4)
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5. A device for releasing an embolic assembly at a target site in a vessel of a patient, comprising:
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a core wire comprising a first electrically-conductive substance that is at least partially fixedly encased in a first non-conductive substance and has a proximal and a distal end, its proximal end being connected to an electrical signal generator; a flexible member having a proximal and a distal end, its proximal end being coupled to the distal end of the core wire; an embolic assembly having a proximal and a distal end, its proximal end being operatively coupled to the distal end of the flexible member; and an electrolytic detachment site located between the proximal end of the embolic assembly and a distal end of the first non-conductive substance, wherein the flexible member comprises a second wire and a third wire, the second wire comprising a second electrically-conductive substance which may be the same as, or different than, the first electrically-conductive substance, the second wire having a proximal end forming a first helical coil segment and a distal end forming a first loop segment, the first helical coil segment being fixedly coupled to the distal end of the core wire, and the third wire comprising a third electrically-conductive substance which is different than the second electrically-conductive substance, the third wire having a proximal end forming a second loop segment interlinked with the first loop segment of the second wire, and a distal end forming a second helical coil segment that is fixedly encased in a second non-conductive substance with the proximal end of the embolic assembly. - View Dependent Claims (6)
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Specification