Method and apparatus for deflecting a screw-in lead
First Claim
1. A system for deflecting a lead, comprising:
- a deflectable stylet having a stylet portion comprising an outer tubular member and a tension member mounted within the outer tubular member and coupled to the outer member;
a handle;
a rotational knob mounted at a distal end of the handle, the rotational knob having a distal facing opening to accept passage of the deflectable stylet therethrough;
a slider disposed within the handle, the slider being coupled to the deflectable stylet and being coupled to the rotatational knob, wherein the slider is advanced or retracted longitudinally within the handle by rotation of the knob to in turn cause deflection of the deflectable stylet;
an attachment mounted for rotation within the distal face opening of the rotational knob, the attachment having a bore to accept therein a proximal end of a lead into which the deflectable stylet is inserted; and
means for coupling the attachment to the proximal end of the lead, wherein the lead is rotated by rotation of the attachment.
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Accused Products
Abstract
A deflectable stylet system optimized for use in conjunction with a lead of the type having a fixation helix that is screwed into body tissue by rotation of the lead'"'"'s connector pin is disclosed. The system includes an attachment that is rotatable and longitudinally slidable with respect to the handle of a deflectable stylet. A lead coupled to the attachment may be moved longitudinally with respect to a stylet to account for slight variances in the lead length. In one embodiment, the attachment couples to the lead via a pushbutton mechanism that can be locked to the lead using one hand. The attachment may be rotated to thereby rotate the lead connector. This allows for retraction and extension of a retractable fixation helix, and for further attachment or detachment of a fixation helix to adjacent tissue. In one embodiment, the attachment may be longitudinally rigidly positioned in predetermined locations with respect to the handle. According to another aspect of the system, a deflection device is coupled to the handle to facilitate deflection of the stylet. In one embodiment, this deflection device may be rotatably and/or slidably activated to accomplish the stylet deflection. The system allows a user to adjust lead length with respect to the stylet length, and to further perform stylet deflection and lead rotation all with one hand.
23 Citations
8 Claims
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1. A system for deflecting a lead, comprising:
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a deflectable stylet having a stylet portion comprising an outer tubular member and a tension member mounted within the outer tubular member and coupled to the outer member; a handle; a rotational knob mounted at a distal end of the handle, the rotational knob having a distal facing opening to accept passage of the deflectable stylet therethrough; a slider disposed within the handle, the slider being coupled to the deflectable stylet and being coupled to the rotatational knob, wherein the slider is advanced or retracted longitudinally within the handle by rotation of the knob to in turn cause deflection of the deflectable stylet; an attachment mounted for rotation within the distal face opening of the rotational knob, the attachment having a bore to accept therein a proximal end of a lead into which the deflectable stylet is inserted; and means for coupling the attachment to the proximal end of the lead, wherein the lead is rotated by rotation of the attachment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification