SUPERELASTIC MEDICAL INSTRUMENT
1 Assignment
0 Petitions
Accused Products
Abstract
Certain aspects relate to a superelastic medical instrument that of bending elastically through the tortuous pathways of an endoscope, returning to a straight shape upon deployment from the endoscope, and deploying straight along the axis of the end of the bronchoscope (within a tolerated margin) to distances of 2 cm or more.
137 Citations
42 Claims
-
1-19. -19. (canceled)
-
20. A method of obtaining a tissue biopsy, the method comprising:
-
positioning a distal end of a working channel of an endoscope adjacent to a desired biopsy site; advancing a tubular jacket through the working channel, the jacket including a biopsy needle assembly positioned within the jacket, the biopsy needle assembly comprising; a needle formed from a superelastic alloy, the needle including; a body portion extending from a distal end of the needle to a proximal end of the needle, and an inner surface of the needle forming a lumen extending through at least a portion of the body portion to an opening in the distal end, wherein the lumen and the opening are configured to acquire a tissue biopsy; and an elongate shaft attached at the proximal end of the needle; actuating a first linear motion of a proximal end the elongate shaft to drive extension of at least a portion of the needle out of the jacket into the biopsy site; acquiring a tissue sample from the biopsy site through the opening of the needle; and actuating a second linear motion of the proximal end the elongate shaft to drive retraction of the needle out of the biopsy site. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 31, 32, 33, 34)
-
-
28-30. -30. (canceled)
-
35. A method of obtaining a tissue biopsy, the method comprising:
-
positioning a distal end of a working channel of an endoscope adjacent to a desired biopsy site; advancing a biopsy needle formed from a superelastic alloy through the working channel, the biopsy needle comprising; a body portion extending from a distal end of the needle to a proximal end of the biopsy needle, and an inner surface of the biopsy needle forming a lumen extending through at least a portion of the body portion to an opening in the distal end, wherein the lumen and the opening are configured to acquire a tissue biopsy; driving extension of at least a portion of the biopsy needle into the biopsy site; acquiring a tissue sample from the biopsy site through the opening of the biopsy needle; and driving retraction of the biopsy needle out of the biopsy site. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42)
-
Specification