| 摘要 |
A transparent flat circular rigid plate a minimum of three inches in diameter with a minimum of four holes clustered around a central point and sized to closely fit vacutainer tubes with hole cover plates rotatably installed to cover any unused holes. With one or more vacutainer tubes installed the tubes may be held firmly in one hand underneath the plate thereby enabling a user to insert a hypodermic needle to fill a vacutainer tube and remove the hypodermic needle without lifting the vacutainer tube so as to be able to fill all installed vacutainer tubes safely and with minimum effort.
|
