Cardiac vein lead and guide catheter
First Claim
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1. A medical electrical lead system, comprising:
- a catheter extending from a proximal segment to a flexible distal segment, the distal segment having a first distal end;
a lead, insertable within the catheter, extending from a proximal end to a second distal end;
an engaging member positioned along the second distal end and engaged against the first distal end when the lead is inserted within the catheter, the engaging member transferring force exerted at the proximal end of the lead to the flexible distal segment and advancing the flexible distal segment from a first position to a second position, wherein the flexible distal segment is scored to form a plurality of cut portions, each of the plurality of cut portions extending about the flexible distal segment from a first end to a second end and including a non-cut portion positioned between the first end and the second end.
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Abstract
A guide catheter and medical lead are provided wherein the lead may be used as a pull wire to steer the guide catheter. The guide catheter is provided with a flexible distal segment and the lead is provided with a distal engaging member, which may also serve as an electrode. The distal engaging member interacts with the distal catheter end such that traction applied to the proximal lead end causes flexion of the distal segment of the catheter to advance the flexible distal segment between a non-flexed position and a flexed position, allowing the catheter to be steered around obstacles.
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Citations
7 Claims
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1. A medical electrical lead system, comprising:
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a catheter extending from a proximal segment to a flexible distal segment, the distal segment having a first distal end;
a lead, insertable within the catheter, extending from a proximal end to a second distal end;
an engaging member positioned along the second distal end and engaged against the first distal end when the lead is inserted within the catheter, the engaging member transferring force exerted at the proximal end of the lead to the flexible distal segment and advancing the flexible distal segment from a first position to a second position, wherein the flexible distal segment is scored to form a plurality of cut portions, each of the plurality of cut portions extending about the flexible distal segment from a first end to a second end and including a non-cut portion positioned between the first end and the second end. - View Dependent Claims (2, 3)
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4. A medical electrical lead system, comprising:
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a catheter extending from a proximal segment to a flexible distal segment, the distal segment having a first distal end;
a lead, insertable within the catheter, extending from a proximal end to a second distal end;
an engaging member positioned along the second distal end and engaged against the first distal end when the lead is inserted within the catheter, the engaging member transferring force exerted at the proximal end of the lead to the flexible distal segment and advancing the flexible distal segment from a first position to a second position, further comprising a strengthening member, fixedly attached to the engaging member, transferring the force exerted at the proximal end of the lead to the engaging member. - View Dependent Claims (5, 6, 7)
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Specification