METHOD AND APPARATUS FOR DEFLECTING A SCREW-IN LEAD
First Claim
1. A deflectable guidewire system comprising:
- a deflectable guidewire having a guidewire portion and a handle mounted at a proximal end of the guidewire portion;
an attachment mounted rotatably around the deflectable guidewire portion and slidable longitudinally relative to the handle, the attachment comprising means for coupling the attachment to a proximal end of a lead in which the guidewire portion is inserted, and a proximally extending member slidably and rotatably located in the distally facing recess of the handle.
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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.
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Citations
22 Claims
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1. A deflectable guidewire system comprising:
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a deflectable guidewire having a guidewire portion and a handle mounted at a proximal end of the guidewire portion; an attachment mounted rotatably around the deflectable guidewire portion and slidable longitudinally relative to the handle, the attachment comprising means for coupling the attachment to a proximal end of a lead in which the guidewire portion is inserted, and a proximally extending member slidably and rotatably located in the distally facing recess of the handle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A deflectable guidewire system, comprising:
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a deflectable guidewire having a guidewire portion and a handle mounted at a proximal end of the guidewire portion, the handle comprising a distally extending member; an attachment mounted rotatably around the deflectable guidewire portion and slidable longitudinally relative to the handle, the attachment comprising means for coupling the attachment to a proximal end of a lead in which the guidewire portion is inserted and a member slidably and rotatably located around the distally extending member of the handle. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A deflectable guidewire system, comprising:
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a deflectable guidewire having a guidewire portion and a handle mounted at a proximal end of the guidewire portion; the handle, comprising; a rotatable knob mounted around the deflectable guidewire portion and comprising internal threading and a distal facing recess; and a slider comprising external threading engaging the internal threading of the knob and means to prevent rotational movement of the slider relative to the handle, the slider moving longitudinally with respect to the handle in response to rotation of the knob; and an attachment mounted rotatably around the deflectable guidewire portion and slidable longitudinally relative to the handle, the attachment comprising means for coupling the attachment to a proximal end of a lead in which the guidewire portion is inserted, and a proximally extending member slidably and rotatably located in the distally facing recess of the knob.
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20. A straight element system comprising:
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a deflectable straight element having a straight element portion and a handle mounted at a proximal end of the straight element portion; an attachment mounted rotatably around the deflectable straight element portion and slidable longitudinally relative to the handle, the attachment comprising means for coupling the attachment to a proximal end of a lead in which the straight element portion is inserted, and a proximally extending member slidably and rotatably located in the distally facing recess of the handle. - View Dependent Claims (21, 22)
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Specification