Resources Contact Us Home
Catheter sheath with longitudinal seam

Image Number 2 for United States Patent #4921479.

An improved removable expandable sheath for aiding in the introduction of catheters into the body which is fabricated from a semi-stiff plastic with memory formed in a tubular configuration with a longitudinal slit or non-joined seam extending along the entire length of the sheath and where the tubular structure with slit is coiled about its longitudinal axis so that its tubular wall overlaps itself in its native state. On exertion of an internal force directed outward, the tubular sheath enlarges its effective diameter by uncoiling to the extent necessary to accommodate a catheter inserted therein. The memory inherent in the material of the sheath keeps the wall of the sheath snugly around the catheter to afford guidance of the catheter into a blood vessel.

  Recently Added Patents
Opportunistic modem
Heteroleptic iridium complexes as dopants
Electric connection box
Method and apparatus for networked modems
Image processing apparatus and image processing method
Differentiated PSIP table update interval technology
  Randomly Featured Patents
Computer enclosure with drive bracket
Construction kit educational aid and toy
Integrated control module for use in a dual clutch transmission having integrated shift actuator position sensors
Pipe coupling
Apparatus to sense and control compressor operation in an HVAC system
Pump or compressor unit
Preparation of veratryl cyanide
Semiconductor device
Method and apparatus for zero drift compensation in a leak detector using a trace gas detector circuit