United States Patent 3459189
Inventors:
Alley, Ralph D.
Sheridan, David S.
Publication Date:
08/05/1969
International Classes:
A61B17/34; A61M25/01; A61M25/06; A61B17/34
US Patent References:
| 3313299 | Intravascular catheter with coaxial puncturing means | | | |