Double cylinder lavage syringe

Claim 2

A syringe for internal lavage, comprising, an injection cylinder and discharge cylinder, each cylinder having an inlet and an outlet, means for connecting a tube to be inserted into a patient to said outlet of said injection cylinder and to said inlet of said discharge cylinder to allow flow to and from the patient, each of said inlets and outlets having a check valve therein, an injection piston in said injection cylinder and a discharge piston in said discharge cylinder, said pistons each having an inward stroke wherein said check valves in said inlets of said cylinders are closed and said check valves in said outlets of said cylinders are open, said pistons each having an outward stroke wherein said check valves in said inlets of said cylinders are open and said check valves in said outlets of said cylinders are closed, and means for manually operating said pistons simultaneously.

Claim 3

A syringe according to claim 1 wherein said inlet in said injection cylinder is adapted for connection to a source of injection fluid, wherein said outlet of said injection cylinder is adapted for connection to a tube, wherein said inlet of said discharge cylinder is adapted for connection to a tube, and wherein said outlet of said discharge cylinder is adapted for connection to a discharge reservoir.

Claim 4

A syringe according to claim 1 wherein said cylinders are parallel with each other, a flexible tube is connected to said connecting means for insertion into a patient''s stomach, and another tube is connected to said inlet of said injection cylinder to allow cold liquid to flow directly from a reservoir therefor into said injection cylinder.

Claim 5

A syringe according to claim 3 wherein said outlet of said injection cylinder and said inlet of said discharge cylinder are adjacent each other at the ends of said cylinders opposite said manual operating means.

Claim 6

A syringe according to claim 1 wherein said manual operating means comprise a handle.

Claim 7

A syringe for internal lavage of a patient''s stomach with ice water, comprising, an injection cylinder and a discharge cylinder disposed adjacent each other and parallel with each other, said injection cylinder having a first orifice at one end thereof, said discharge cylinder having a second orifice at one end thereof adjacent said first orifice, a check valve in said first orifice arranged to allow ice water flow from said injection cylinder, a check valve in said second orifice arranged to allow stomach fluid flow into said discharge cylinder, a hollow flexible tube means adapted to be swallowed by the patient connected to said first and second orifices to allow fluid into and from the stomach, a third orifice adjaceNt the end of said injection cylinder having said first orifice, and a fourth orifice in said discharge cylinder adjacent the end thereof having said second orifice, a check valve in said third orifice arranged to allow ice water flow into said injection cylinder, passageway means connected to said third orifice and extending to a reservoir of ice water for conveying ice water directly to said injection cylinder for injection into the stomach, and a check valve in said fourth orifice arranged to allow stomach fluid flow out of said discharge cylinder, a pair of pistons, each in a respective one of said cylinders disposed parallel with each other, and a handle connected to said pistons for manually moving same axially and simultaneously in said cylinders.

Claim 8

A syringe for internal lavage of a patient''s stomach with ice water, comprising, an injection cylinder and a discharge cylinder disposed adjacent each other and parallel with each other, said injection cylinder having a first orifice at one end thereof, said discharge cylinder having a second orifice at one end thereof adjacent said first orifice, a check valve in said first orifice arranged to allow ice water flow from said injection cylinder, a check valve in said second orifice arranged to allow stomach fluid flow into said discharge cylinder, a hollow flexible tube means adapted to be swallowed by the patient connected to said first and second orifices to allow fluid into and from the stomach, a third orifice adjaceNt the end of said injection cylinder having said first orifice, and a fourth orifice in said discharge cylinder adjacent the end thereof having said second orifice, a check valve in said third orifice arranged to allow ice water flow into said injection cylinder, passageway means connected to said third orifice and extending to a reservoir of ice water for conveying ice water directly to said injection cylinder for injection into the stomach, and a check valve in said fourth orifice arranged to allow stomach fluid flow out of said discharge cylinder, a pair of pistons, each in a respective one of said cylinders disposed parallel with each other, and a handle connected to said pistons for manually moving same axially and simultaneously in said cylinders.