Syringe apparatus with a fluid reservoir for injection and aspiration of fluids
First Claim
1. A syringe apparatus for transmitting a fluid comprising:
- (a) a first syringe having a generally hollow tube and a plunger for displacement within the hollow tube, the hollow tube having a fluid port for transmitting fluid relative to the hollow tube and the plunger having a piston in sealing engagement with the hollow tube and an actuator for effecting longitudinal displacement of the piston within the hollow tube to provide fluid transmission through the fluid port;
(b) a second syringe for containing the fluid;
(c) a flexible connecting tube with a first end and a second end, the first end being connected with the second syringe;
(d) a valve having an outside port for transmitting fluid, a reservoir port connected with the second end of the connecting tube, and a syringe port connected with the fluid port of the hollow tube, the valve providing a first fluid flow path between the reservoir port and the syringe port and a second fluid flow path between the syringe port and the outside port and the valve having a selector for alternatively selecting the first and second fluid flow paths; and
(e) a hypodermic needle connected with the outside port of the valve so that the valve rigidly holds the hypodermic needle in fixed position relative to the first syringe.
2 Assignments
0 Petitions
Accused Products
Abstract
A syringe apparatus is provided having a first control syringe with a hypodermic needle for injecting medication into a patient. A three-way stopcock interconnects the first syringe with the hypodermic needle and also interconnects the first syringe with a second reservoir syringe. A handle lever on the stopcock may be positioned to provide a first fluid flow path between the first syringe and the hypodermic needle to permit injection of medication into the patient. The handle lever of the stopcock may alternatively be positioned to provide a second fluid flow path to permit the first syringe to be refilled with medication from the second reservoir syringe for subsequent injection into the patient. The refilling of the first syringe from the reservoir syringe may be effected without removal of the needle from the patient and without disassembly of the first syringe.
-
Citations
22 Claims
-
1. A syringe apparatus for transmitting a fluid comprising:
-
(a) a first syringe having a generally hollow tube and a plunger for displacement within the hollow tube, the hollow tube having a fluid port for transmitting fluid relative to the hollow tube and the plunger having a piston in sealing engagement with the hollow tube and an actuator for effecting longitudinal displacement of the piston within the hollow tube to provide fluid transmission through the fluid port; (b) a second syringe for containing the fluid; (c) a flexible connecting tube with a first end and a second end, the first end being connected with the second syringe; (d) a valve having an outside port for transmitting fluid, a reservoir port connected with the second end of the connecting tube, and a syringe port connected with the fluid port of the hollow tube, the valve providing a first fluid flow path between the reservoir port and the syringe port and a second fluid flow path between the syringe port and the outside port and the valve having a selector for alternatively selecting the first and second fluid flow paths; and (e) a hypodermic needle connected with the outside port of the valve so that the valve rigidly holds the hypodermic needle in fixed position relative to the first syringe. - View Dependent Claims (2, 3, 4)
-
-
5. A method for administering a fluid to a patient comprising:
-
(a) providing a valve having a first port, a second port, and a third port and a manual actuator handle movable between at least a first position providing a first fluid flow path through the valve and at least a second position providing a second fluid flow path through the valve; (b) connecting a hypodermic needle to the first port; (c) connecting a container holding the fluid to be administered to the second port; (d) connecting a first syringe to the third port; (e) moving the actuator handle to the first position to select the first fluid flow path through the valve between the second port and the third port; (f) actuating the first syringe after moving the actuator handle to the first position so that the fluid from the container flows through the first fluid flow path and fills the first syringe to a selected level; (g) moving the actuator handle to the second position to select the second fluid flow path through the valve between the first port and the third port; (h) inserting the hypodermic needle into a patient; and (i) actuating the first syringe after moving the actuator handle to the second position so that the fluid in the first syringe flows through the second fluid flow path and is thereby administered through the hypodermic needle to the patient. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12)
-
-
13. A method for aspirating a fluid from a patient comprising:
-
(a) providing a valve having a first port, a second port, and a third port and having first and second fluid flow paths through the valve; (b) connecting a hypodermic needle to the first port; (c) connecting a container for holding aspirated fluid to the second port; (d) connecting a syringe to the third port; (e) selecting the second fluid flow path through the valve between the first port and the third port; (f) inserting the hypodermic needle into the patient; (g) actuating the syringe so that fluid in the patient flows through the second fluid flow path and fills the syringe to a selected level; (h) selecting the first fluid flow path through the valve between the second port and the third port; and (i) actuating the syringe so that the fluid from the syringe flows through the first fluid flow path and fills the container to a selected level. - View Dependent Claims (14, 15)
-
-
16. A method for transmitting a fluid comprising:
-
(a) providing a first fluid flow path between a reservoir container and a syringe having a hollow tube and a plunger, the first fluid flow path allowing fluid to be transmitted between the reservoir container and the hollow tube; (b) providing a second fluid flow path between the syringe and a fluid directing means for directing fluid flow, the second fluid flow path allowing fluid to be transmitted between the hollow tube and the fluid directing means; (c) positioning the fluid directing means at a selected position; (d) alternatively selecting the first and second fluid flow paths; (e) retracting the plunger so that fluid flows into the hollow tube along a selected one of the first and second fluid flow paths; and (f) engaging the plunger into the hollow tube so that fluid flows out of the hollow tube along the selected one of the first and second fluid flow paths. - View Dependent Claims (17)
-
-
18. A syringe apparatus for transmitting a fluid comprising:
-
(a) a first syringe having a generally hollow tube and a plunger for displacement within the hollow tube, the hollow tube having a fluid port for transmitting fluid relative to the hollow tube and the plunger having a piston in sealing engagement with the hollow tube and an actuator for effecting longitudinal displacement of the piston within the hollow tube to provide fluid transmission through the fluid port; (b) a reservoir for holding the fluid; (c) a hypodermic needle; and (d) a valve having an outside port connected with the hypodermic needle, for transmitting fluid, a reservoir port connected with the reservoir, and a syringe port connected with the fluid port of the hollow tube, the valve rigidly holding the hypodermic needle in fixed position relative to the first syringe and providing a first fluid flow path between the reservoir port and the syringe port and a second fluid flow path between the syringe port and the outside port, and the valve having a selector for alternatively selecting the first and second fluid flow paths. - View Dependent Claims (19, 20, 21, 22)
-
Specification