Patent ID: 11918410
Assignee: SMITHS MEDICAL ASD, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 11:
12. A needle comprising a shaft extending along a longitudinal axis having an outer circumferential wall, a proximal end and a distal end including a sharp tip, at least one continuous groove having one and other walls orthogonal to each other spirally wound about the outer circumferential wall of the shaft from at least adjacent the sharp tip to a predetermined distance away from the sharp tip, the one and other orthogonal walls formed onto the outer circumferential wall at a tilt angle (α) toward the proximal end of the shaft, the one wall closer to the outer circumferential wall formed at an angle (β) relative to the longitudinal axis, the angle (β) resulting from subtraction of the tilt angle (α) from a would be neutral position of the walls wherein the one and other walls each are angled at approximately 45° from the longitudinal axis, wherein the angle (β) affects the desired angle at which the needle is inserted into a subject under ultrasound im aging.