Rotatable lead introducer
First Claim
1. A device for rotating and inserting an electrode of a lead into body tissue to be stimulated, the device comprising:
- a) an elongate shaft having a proximal portion and a distal portion;
b) a first distal member pivotally coupled to the elongate shaft distal portion;
c) a second distal member rotatably coupled to the first distal member;
d) wherein the second distal member includes a portion for releasably engaging the electrode;
e) a rotatable tube having a proximal portion and a distal portion, the tube disposed around the elongate shaft and rotatably flexibly coupled over the first distal member pivotal coupling to the second distal member;
g) a first elongate member having a distal region operably coupled to the second distal member portion for releasably engaging the electrode and having a proximal portion actuable from the device proximal portion to release the electrode; and
h) a second elongate member having a distal region operably coupled to the first or second distal member for causing the first distal member to pivot relative to the elongate shaft, and having a proximal portion actuable from the device proximal portion.
9 Assignments
0 Petitions
Accused Products
Abstract
Minimally invasive introducers and methods that can be used for rotationally securing devices within the human body. Introducers can include a distal element for releasably engaging a lead head controllable from a proximal control located outside of the body. An inner stem can extend between a proximal portion and a distal portion, and be pivotally and rotatably coupled to the distal lead engagement mechanism. An outer tube can be rotatably disposed over the inner stem and be flexibly coupled over the pivot to rotationally drive the distal element. A helical epicardial-myocardial lead electrode can be secured and oriented straight ahead and introduced through a port or small incision with the introducer in a straight configuration. The introducer can then be bent and rotated to screw the helical electrode into the heart.
614 Citations
20 Claims
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1. A device for rotating and inserting an electrode of a lead into body tissue to be stimulated, the device comprising:
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a) an elongate shaft having a proximal portion and a distal portion; b) a first distal member pivotally coupled to the elongate shaft distal portion; c) a second distal member rotatably coupled to the first distal member; d) wherein the second distal member includes a portion for releasably engaging the electrode; e) a rotatable tube having a proximal portion and a distal portion, the tube disposed around the elongate shaft and rotatably flexibly coupled over the first distal member pivotal coupling to the second distal member; g) a first elongate member having a distal region operably coupled to the second distal member portion for releasably engaging the electrode and having a proximal portion actuable from the device proximal portion to release the electrode; and h) a second elongate member having a distal region operably coupled to the first or second distal member for causing the first distal member to pivot relative to the elongate shaft, and having a proximal portion actuable from the device proximal portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A device for rotating and inserting an electrode of a lead into body tissue to be stimulated, the device comprising:
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a) an elongate shaft having a proximal portion and a distal portion; b) a hinge having a proximal portion coupled to the elongate shaft distal portion, and a distal portion; c) a lead grasping member rotatably coupled to the hinge distal portion; d) wherein the lead grasping member includes jaws configured and dimensioned to releasably grasp the lead, and an internal camming surface coupled to the jaws; e) a camming element disposed within the lead grasping member and biased to apply force to the camming surface to open the jaws; f) a first elongate member having a distal region coupled to the camming element to reduce the bias when the first elongate member is proximally retracted, and a proximal portion actuatable from the device proximal portion; g) a second elongate element having a distal region operably coupled to the hinge distal portion and a proximal region actuatable from the device proximal portion; and h) a tube rotatably disposed over the elongate shaft and rotatably coupled to the lead grasping member over the hinge. - View Dependent Claims (19, 20)
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Specification