초록 ▼

An autotransfuser includes, in a single receptacle, a pair of chambers separated by a common wall. Each receptacle can alternately perform a blood infusion or blood collection function. Each chamber includes at least three inlets/outlets, a blood inlet, a blood outlet and an air inlet. In some embod

An autotransfuser includes, in a single receptacle, a pair of chambers separated by a common wall. Each receptacle can alternately perform a blood infusion or blood collection function. Each chamber includes at least three inlets/outlets, a blood inlet, a blood outlet and an air inlet. In some embodiments of the invention the air inlet serves alternately to couple either an air or a pressure source on the one hand or a vacuum source on the other hand to the corresponding chamber. In other embodiments of the invention, the air inlet comprises a vacuum inlet and a separate air or pressure inlet. A disk like device or valve manifold is arranged for rotatable movement adjacent the inlets/outlets. The disk like device includes four channels, one for each of air or pressure, vacuum, blood inlet and blood infusion. Each channel includes a port for coupling to external tubing and at least one channel end. The channel ends are located in the disk like device so that by rotating the disk like device to two distinct positions, one or the other of the functions can be performed by each chamber. A robust blood valve is also disclosed which has a float element of density to allow it to float in a pool of human blood and a significant closure force of about ten grams.

대표청구항 ▼

An autotransfusing device comprising: a pair of blood collecting and reinfusing chambers each with rigid walls, each chamber including a blood inlet, a blood outlet and air inlet means including at least an air inlet, all said inlets and outlets of a chamber located in a substantially planar wall; r

An autotransfusing device comprising: a pair of blood collecting and reinfusing chambers each with rigid walls, each chamber including a blood inlet, a blood outlet and air inlet means including at least an air inlet, all said inlets and outlets of a chamber located in a substantially planar wall; rotatable channeled means operatively associated with each of said chambers and rotatable relative thereto, said rotatable channeled means including a channel and a port for each of blood collection and blood infusion functions as well as a channel and a port for a vacuum source and an air channel; said blood collection channel having a inlet coupled to said blood collection port and at least one blood collection channel end; said blood infusion channel having an outlet coupled to said blood infusion port and at least one blood infusion channel end; said vacuum channel coupled at one end to said vacuum port and having, in addition at least one vacuum channel end; said air channel coupled at one end to said air port and having, in addition at least one air channel end; said channel ends are located in said rotatable channeled means so that with said rotatable channeled means in one operative position an air inlet and blood inlet of a first of said chambers coordinate in space with a vacuum channel end and a blood collection end, respectively; and a blood infusion end and an air channel end coordinate in space with an air inlet and said blood outlet, respectively of a second of said chambers.