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
Atmospheric treater with roller confined discharge chamber
Native NAD-dependent GAPDH replaced with NADP-dependent GAPDH plus NADK
Normalized contextual performance metric for the assessment of fatigue-related incidents
Redundant parallel operation of motor vehicle electrical system generators
Methods for measuring media performance associated with adjacent track interference
Bitter taste receptors
Catalyst compositions for hydroformylation reaction and hydroformylation process using the same
  Randomly Featured Patents
Portable external power-supplying device
Image processing method and device, and imaging apparatus using the image processing device
Focused ion beam microlathe
Cleaning card
Roller bearing with a retainer having voids for containing grease
Zoom lens device with zooming position detector
Method and device for access communication/control
Method for configuring a defibrillator
Optical relay for a microscope and a back aperture viewer therefor
Watch and strap