System for detecting air
First Claim
Patent Images
1. A syringe for use in an angiographic injector of a type having a syringe holder;
- the syringe comprising;
(a) a syringe body having a distal end and a proximal end;
the syringe body defining a pumping chamber and an inlet port;
(b) a syringe end wall located at the distal end of said syringe body having a flat face for mating engagement with the syringe holder;
said end wall defining an outlet port; and
(c) a syringe plunger located in said pumping chamber adapted for reciprocal motion between a position proximate to said proximal end and said distal end.
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Accused Products
Abstract
A dual port syringe has an upper port for connection to a fluid reservoir and a lower port for delivery of the medical fluid under pressure to a patient. A first valve is connected between the fluid reservoir and the upper port, and second valve is connected between the lower port and the patient. During a fill operation, a piston is moved within the syringe to drawn fluid from the reservoir into the syringe through the upper port. During injection operation, the piston moves in an opposite direction to force fluid out of the syringe through the lower port.
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Citations
25 Claims
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1. A syringe for use in an angiographic injector of a type having a syringe holder;
- the syringe comprising;
(a) a syringe body having a distal end and a proximal end;
the syringe body defining a pumping chamber and an inlet port;
(b) a syringe end wall located at the distal end of said syringe body having a flat face for mating engagement with the syringe holder;
said end wall defining an outlet port; and
(c) a syringe plunger located in said pumping chamber adapted for reciprocal motion between a position proximate to said proximal end and said distal end. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18, 19, 20)
- the syringe comprising;
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12. An injection system comprising:
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(a) a syringe including a barrel defining a pumping chamber, a longitudinal axis, and at least one port for providing fluid-flow communication with said pumping chamber;
said barrel having a distal end and a proximal end;
(i) said distal end including a flat wall section normal to said central, longitudinal axis;
(ii) said syringe including a plunger constructed and arranged within said pumping chamber for reciprocal motion between a position adjacent to said proximal end and said distal end; and
(b) a syringe holder arrangement including;
(i) a mounting chamber body constructed and arranged to hold said syringe;
said mounting chamber body including a loading end for receipt of said syringe;
(ii) a door member movable relative to said body to allow for selective opening and closing of said loading end of said mounting chamber body;
(A) said door member defining a flat, planar surface for abutting engagement with said flat wall section of said syringe.
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21. A method for mounting a syringe comprising steps of:
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(a) positioning a syringe through a front aperture in a syringe holder arrangement; and
(b) pivoting a door of the syringe holder arrangement to close the front aperture and abut a front face of the syringe. - View Dependent Claims (22, 23, 24)
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25. A method for using a syringe comprising steps of:
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(a) providing a syringe including a pumping chamber and a plunger;
(b) inserting an actuator into the plunger; and
(c) deforming the plunger to preclude further use by removing the actuator from the plunger.
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Specification