Stephen James Field,Richard Hingley,Stephen James Lodge,Thomas Cuthbert Mills
申请号：
US13914684
公开号：
US20130281835A1
申请日:
2013.06.11
申请国别(地区):
US
年份:
2013
代理人:
摘要：
An embryo transfer catheter or other medical device has a shaft extruded with two layers. The outer layer is relatively thick and contains gas bubbles sufficient to increase the visibility of the catheter under ultrasound observation but with a density that allows material within the catheter to be viewed by the eye. The inner layer is relatively thin and is free of bubbles so that it provides a smooth bore to the catheter.
