Resources Contact Us Home
Catheter set

Image Number 2 for United States Patent #4451256.

In order to keep the opening for inserting a catheter into a blood vessel as small as possible, a catheter insertion tube is used which coaxially surrounds the puncturing canula and consists, at least in a circumferential area and/or at least along a portion of its length, of one or several dilatable or expandable areas permitting enlargement of its internal diameter. The diameter of the catheter insertion tube, at the front end where it is inserted into the blood vessel, is approximately equal or smaller than the outer diameter of the catheter. The catheter insertion tube is expandable at least over the front or forward portion of its length by the catheter. The catheter insertion tube i removable from the puncture over the catheter while the catheter is advanced into the puncture and is tighty sealed by the catheter because the catheter has an external diameter equal to or larger than the puncture previously occupied by the insertion tube.

  Recently Added Patents
Waterproof wound protector
Polymer compositions and nonwoven compositions prepared therefrom
Laminar library screen
Identification of websites that break out of frames
Method and apparatuses for solving weighted planar graphs
Routing of data including multimedia between electronic devices
High-speed comparator with asymmetric frequency response
  Randomly Featured Patents
Unsaturated polyester compositions and their use
Bundled transmission control protocol connections
Disc type information storage and retrieval system
Air-to-air heat pump
Method and apparatus for organizing storing and retrieving information to administer a sewer system
Adaptive sampling region for a region editing tool
Welded vehicle wheel
Semiconductor device
Capacitor-mounted circuit board
Chalcogenide electrochemical cell