Apparatus for removing an elongated structure implanted in biological tissue
First Claim
Patent Images
1. A lead removal apparatus for removing an implanted lead from a patient, comprising:
- an elongated proximal portion capable of having both a first configuration and a second configuration; and
a distal portion, connected to said proximal portion, including an expandable portion adapted to engage said implanted lead;
wherein the first configuration includes a compacted, pre-formed shape, said compacted, pre-formed shape being constrainable into the second configuration, the second configuration being sufficiently straight in shape to permit passage thereover by a medical device having a passageway extending therethrough.
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Accused Products
Abstract
Disclosed is a lead removal apparatus for removing an implanted pacemaker or defibrillator lead from the heart. The lead removal apparatus includes a proximal handle that further includes a proximal portion, such as an elongate section of intertwined wire, having a compact, pre-formed first configuration, such as one or more coiled loops. The compact shape permits the operator to utilize the proximal portion without requiring the assistance of a second person to help keep it within the sterile field during a procedure. The operator is thus able to constrain or uncoil the proximal portion into a second configuration that is sufficiently straight such that a medical device, such as a dilator sheath, can be advanced thereover to help separate the lead from scar tissue along the vein path. The proximal portion may include sufficient resiliency to substantially return to the first configuration once the sheath has been advanced.
92 Citations
28 Claims
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1. A lead removal apparatus for removing an implanted lead from a patient, comprising:
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an elongated proximal portion capable of having both a first configuration and a second configuration; and
a distal portion, connected to said proximal portion, including an expandable portion adapted to engage said implanted lead;
wherein the first configuration includes a compacted, pre-formed shape, said compacted, pre-formed shape being constrainable into the second configuration, the second configuration being sufficiently straight in shape to permit passage thereover by a medical device having a passageway extending therethrough. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A lead removal apparatus for removing an implanted lead from a patient, comprising:
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an elongated proximal portion capable of having both a first configuration and a second configuration; and
a distal portion, connected to said proximal portion, including an expandable portion adapted to engage said implanted lead;
wherein the first configuration includes one or more coiled loops having a shape memory, said proximal portion having a shape memory being constrainable into the second configuration, the second configuration being sufficiently straight in shape to permit passage thereover by a medical device having a passageway extending therethrough. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A lead removal apparatus for removing an implanted lead from a patient, comprising:
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an elongated proximal portion comprising a length of intertwined wire measuring at least 40 cm, said elongated proximal portion capable of having both a first configuration and a second; and
a distal portion, connecting to said proximal portion, including an expandable portion adapted to engage said implanted lead;
wherein the first configuration includes a plurality of coiled loops having a shape memory, said plurality of coiled loops having a shape memory being constrainable into the second configuration, the second configuration being sufficiently straight in shape to permit passage thereover by a medical device having a passageway extending therethrough; and
wherein said elongated proximal portion has a tendency to resiliently reassume the first configuration once the proximal portion is no longer being constrained into the second configuration. - View Dependent Claims (25, 26, 27)
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28. A lead removal apparatus for removing an implanted lead from a patient, comprising:
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an elongated proximal portion capable of having both a first configuration and a second configuration;
a distal portion, connected to said proximal portion, including expandable means for engaging said implanted lead; and
actuator means for activating the expandable means for effecting the engaging of said implanted lead;
wherein the first configuration includes a compacted, pre-formed shape, said compacted, pre-formed shape being constrainable into the second configuration, the second configuration being sufficiently straight in shape to permit passage thereover by a medical device having a passageway extending therethrough.
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Specification
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Current AssigneeCook Medical Incorporated (Cook Group Incorporated)
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Original AssigneeCook Vascular Incorporated (Cook Group Incorporated)
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InventorsGoode, Louis B.
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Primary Examiner(s)EVANISKO, GEORGE ROBERT
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Application NumberUS09/859,555Publication NumberTime in Patent Office992 DaysField of Search607/115, 607/119, 607/122, 606/1, 606/108US Class Current607/119CPC Class CodesA61N 1/056 Transvascular endocardial e...A61N 1/057 Anchoring means; Means for ...A61N 2001/0578 having means for removal or...
