초록 ▼

Apparatus for storing, mixing, and dispensing a two-component bone cement includes a first component supply section, a mixing section, and a drive base. One or more ampules of the first (liquid) component, provided within the first component supply section, are broken or cut when a lever is rotated.

Apparatus for storing, mixing, and dispensing a two-component bone cement includes a first component supply section, a mixing section, and a drive base. One or more ampules of the first (liquid) component, provided within the first component supply section, are broken or cut when a lever is rotated. The second (powder) component is provided within the mixing section. During the mixing process, a vacuum is applied within the mixing section, assisting in the delivery of the first component through a filter while preventing the passage of broken glass or plastic from the ampules. Mixing is done by a pair of paddles and a helical spring rotating within the mixing station, being driven in one direction, or in alternating opposite directions of rotation, by the drive base. The resulting mixture is dispensed by placing the mixing station, without the drive base and the first component supply section, into a dispensing gun, which drives a shaft moving a piston within the mixing section to dispense the mixture through a dispensing tube while collapsing the helical spring. A plug within the piston is pushed through the dispensing tube to clear the mixture remaining therein. In an alternative arrangement, mixing occurs under vacuum conditions in a bowl having an internal surface similarly scraped with a flexible wire.

대표청구항 ▼

[ I claim:] [2.] Apparatus for dispensing a liquid component of a mixture, with said liquid component being held within an ampule, into a mixing chamber, wherein said apparatus comprises:a supply section housing extending around said ampule;ampule holding means for holding said ampule within said su

[ I claim:] [2.] Apparatus for dispensing a liquid component of a mixture, with said liquid component being held within an ampule, into a mixing chamber, wherein said apparatus comprises:a supply section housing extending around said ampule;ampule holding means for holding said ampule within said supply section housing;ampule opening means for opening said ampule within said ampule holding means to release said liquid component therein; anda dispensing section including a tube for dispensing said liquid component into said mixing chamber, wherein said dispensing section extends around said ampule;a filter extending across said tube, preventing passage therethrough of residue from walls of said ampule after opening while permitting passage therethrough of said liquid component and wherein said supply section housing includes an externally visible member which is deflected by a vacuum established within said mixing chamber when said liquid component is pulled through said filter.