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
Systems and methods for documenting medical findings of a physical examination
Systems and methods for velocity profile based approach to point control
Image erasing apparatus and recording medium conveying method for image erasing apparatus
Leg mounted portable computer
Interactive program guide systems and processes
Measurement protocol for a medical technology apparatus
Circuit board and display panel assembly having the same
  Randomly Featured Patents
Means for in-place automated calibration of optically-based thickness sensor
Apparatus for adjusting the concentration of oil in a water-containing oil material
Sensor system with plasmonic nano-antenna array
Image displaying apparatus
Task scheduling in an event driven environment
Panel for displaying large size articles
Non-glossing thermoformed film
Beta-nucleated propylene copolymer
Overload protection in a motor control system
Domestic refrigerator having a compartment supplied with an oxygen starved gas and process for feeding such a compartment