Mixing and distribution device for fixing paste, particularly for multicomponent bone cement
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Abstract
A mixing and distribution device for fixing paste, for multicomponent bone cement, comprising a box-like body that forms internally a receptacle closed in an upper region by a detachable and fluid-tight lid, inside which devices for mixing components of the fixing paste are accommodated and are coupled to a piston that forms a venting chamber toward the lid and a mixing chamber toward the bottom of the receptacle; the mixing chamber is connected to a channel for distributing bone cement, controlled by valve devices, and the venting chamber is connected to a venting channel associated with suction devices. The mixing devices are constituted by longitudinally elongated mixing blades arranged so as to slide within complementary through slots formed in the piston; a rotation pivot is locked coaxially on the piston and is arranged so that it can slide through a corresponding fluid-tight hole formed in the lid.
18 Citations
56 Claims
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1-28. -28. (canceled)
- 29. A mixing and distribution device for fixing paste, particularly for multicomponent bone cement, comprising a box-like body that forms internally a receptacle that is closed in an upper region by a detachable and substantially fluid-tight lid, inside which means for mixing the components of the fixing paste are accommodated, said mixing means being coupled to a piston that forms, inside said receptacle, a venting chamber toward said lid and a mixing chamber toward the bottom of said receptacle, said mixing chamber being connected to a channel for distributing bone cement, which is controlled by valve means, said venting chamber being instead connected to a venting channel, which can be functionally associated with suction means, said mixing means being constituted by longitudinally elongated mixing blades that are arranged so as to slide within complementary through slots formed in said piston, a rotation pivot being further locked coaxially on said piston and being arranged so that it can slide through a corresponding fluid-tight hole formed in said lid, said rotation pivot being associable with corresponding rotation means that can be operated by a user during the mixing of the multicomponent paste, said device further comprising a handgrip for a single hand of the user, with which means for the translational motion of said rotation pivot together with said piston toward the bottom of said receptacle are associated, said means being actuatable with the same hand associated with said handgrip, said venting and mixing chambers being mutually connected for the passage of gaseous fluids.
Specification