Braided hemostasis shaft for improved torsional response
AssigneeBoston Scientific Scimed, Inc.
InventorsShawn Ryan, Kevin John Wilcox, Oliver Gorst
Life of this patent
Estimating the term…
Abstract
A medical insertion device includes an elongated shaft extending from a proximal end to a distal end and having flexibility sufficient for insertion through a working channel of an endoscope along a tortuous path. The elongated shaft includes a coil extending from the proximal end to the distal end and having a channel extending longitudinally therethrough and a braided portion extending around a portion of the coil, the braided portion including a plurality of lines wound together such that first and second ones of the lines intersect to enclose a predetermined angle therebetween, the angle being between 25 and 55 degrees.
Claims18
A medical device, comprising:
- a clip including a capsule extending from a proximal end to a distal end and at least two arms at least partially received within the capsule;
- a bushing having a distal end releasably coupled to a proximal end of the capsule;
- an elongated shaft coupled to a proximal end of the bushing, the elongated shaft including:
- a coil extending from a proximal end thereof to a distal end thereof coupled to a proximal end of the bushing, the coil having a channel extending longitudinally therethrough;
- and
- a braided portion extending around a portion of the coil, the braided portion including a plurality of lines wound together such that first and second ones of the lines intersect to enclose a predetermined angle therebetween when viewed from a direction orthogonal to an axis of the elongated shaft, the angle being at least 25 degrees and less than 50 degrees, wherein a diameter of filaments of the first one of the lines is different from a diameter of filaments of the second one of the lines;
- and
- a handle coupled to the clip via a control wire.
A method for deploying a clipping device in a living body, comprising the steps of:
- advancing an elongate member to a target position in a living body, the elongate member extending from a handle at a proximal end to a distal end coupled to a proximal end of a bushing, a distal end of the bushing releasably coupled to a capsule, the elongate member having a first channel extending longitudinally therethrough, the elongated member including a coil extending from the proximal end to the distal end and a braided portion extending over a portion of the coil the braided portion formed of a plurality of lines braided together such that first and second ones of the lines intersect to enclose a predetermined angle therebetween, the angle being at least 25 degrees and less than 50 degrees, wherein a diameter of filaments of the first one of the lines is different from a diameter of filaments of the second one of the lines;
- moving a clip distally out of the capsule, the clip including a pair of arms biased toward an open tissue-receiving configuration, the clip being coupled to the handle via a control wire;
- rotating the handle to cause a corresponding rotation of the clip;
- and
- actuating the control wire to draw the clip proximally into the capsule closing the arms over a target tissue.
Dependencies are inferred from the claim text.