ENDOSCOPIC ROTARY ACCESS NEEDLE
First Claim
1. A device for forming a passage in tissue, comprising:
- a substantially flexible elongate shaft having distal end and a proximal end, said distal end terminating in a circumferentially extending sharpened tissue-cutting edge; and
a control member interfacing with said proximal end of said elongate shaft to selectively impart a rotary motion thereto.
1 Assignment
0 Petitions
Accused Products
Abstract
Various methods and devices are provided for cutting an opening through tissue. In one embodiment, a tissue-penetrating device is provided and includes a flexible elongate needle shaft that has a distal end with a circumferentially extending tissue-cutting edge formed thereon. A proximal end of the elongate needle shaft interfaces with a rotary control member for selectively applying a rotary motion to the elongate needle shaft. When the rotating tissue-cutting edge is brought into contact with target tissue, the tissue-cutting edge cuts an opening through the tissue. The device may have a stylet that has a blunt end that can be adjusted to protrude out of the distal end of the elongate needle shaft out beyond the tissue-cutting edge and is biased inward into the elongate needle shaft when the blunt end is brought into contact with the tissue to expose the tissue-cutting edge to the tissue. The stylet may be used as a guide wire after the hole has been cut through the tissue. An outer sheath may be provided to selectively cover the distal end of the elongate needle shaft and blunt end of the stylet. The outer sheath may have a selectively expandable member thereon that may be used to expand the cut hole
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Citations
22 Claims
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1. A device for forming a passage in tissue, comprising:
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a substantially flexible elongate shaft having distal end and a proximal end, said distal end terminating in a circumferentially extending sharpened tissue-cutting edge; and a control member interfacing with said proximal end of said elongate shaft to selectively impart a rotary motion thereto. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A device for forming a passage in tissue, comprising:
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a handle assembly; a substantially flexible elongate shaft having distal end and a proximal end portion, said distal end terminating in a circumferentially extending sharpened tissue-cutting edge; and a thumbwheel rotatably supported by said handle assembly and coupled to said proximal end portion of said elongate shaft to enable a rotary motion to be applied thereto. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A method for forming a passage through tissue, comprising:
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inserting a flexible elongate shaft that has a distal end with circumferentially extending sharpened tissue-cutting edge formed thereon through a body lumen such that a proximal end portion of the flexible elongate shaft protrudes out of the body lumen; contacting a target tissue within the body with the circumferentially extending tissue-cutting edge; and applying a rotary motion to the proximal end portion of the flexible elongate shaft to cause the circumferential tissue-cutting edge to cut through the target tissue. - View Dependent Claims (19, 20, 21, 22)
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Specification