| 摘要 |
There is disclosed a medical needle comprising a needle shaft that defines a longitudinal axis, a tip formed at one end of the shaft, and an ultrasonic reflector formed in an outer surface of the needle shaft. The reflector comprises a first reflector surface that is at an angle of no more than 35° to the longitudinal axis of the shaft and that faces towards the tip, and at least one additional reflector surface that forms an angle to the first reflector surface within the range of 75° to 105°, and that is substantially concave in a direction towards the first reflector surface. |
