The present invention provides a medical safety device for holding a container. The medical safety device is used to hold the container while extracting liquid by a syringe from the container. The medical safety device includes a main body having an opening for an interior. The interior has a retention space configured for retaining a container. In addition, the main body includes a plunger having a retention surface configured for contacting and retaining a container in the retention space. The plunger slides up and down within the retention space. Two handles are affixed to opposing sides of the main body. The plunger and retention surface applies force to the container positioned within the retention space sufficient to hold the container in place within the retention space. The plunger may be biased down into the retention space by a spring attached to the plunger.
