Catheter introduction set
US4772264A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 23, 1986 |
| Grant date | Sep 20, 1988 |
| Priority date | — |
| Expiry date | Jun 23, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M25/0606
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A catheter introduction set for introducing a catheter tube into blood vessels such as veins and arteries, includes a hollow needle, a catheter tube surrounding a flexible safety guide tube extending through the needle passageway. The guide tube is initially retracted. The needle will be inserted into a vein or artery and the guide tube provides an immediate feedback of blood at its remote end, thus indicating the needle is inside a blood vessel. After the needle has pierced the blood vessel, the safety guide tube is advanced into the lumen of the blood vessel to provide a guide for sliding the catheter tube into the pierced vessel and permitting retraction of the needle. The capillary tube requires little blood pressure to provide the blood feedback indicating that a vessel has been pierced, which makes the unit suitable use in for small veins, as well as arteries. When the catheter tube has been guided into the vessel, the needle and the guide tube are withdrawn, leaving the catheter tube in place. The end connector on the catheter tube has a clip for adhesive tape to be applied to the skin for quickly and easily holding the catheter tube in position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.