Pump set with safety interlock
First Claim
1. A pump set for use in a pumping apparatus having a control system for controlling operation of the pumping apparatus to supply fluid to a patient through the pump set loaded in the pumping apparatus, a source of electromagnetic radiation operatively connected to the control system of the pumping apparatus for emitting electromagnetic radiation, an electromagnetic radiation detector operatively connected to the control system for providing an indication that the pump set is properly loaded on the pumping apparatus, the pump set comprising:
- a conduit for carrying fluid to a patient;
an electromagnetic radiation propagation affecting member associated with the conduit and is adapted for mounting in the pumping apparatus in the path of the electromagnetic radiation from the source of electromagnetic radiation, the propagation affecting member comprising a body defining a fluid passage in communication with the conduit for passing fluid through the body, the fluid passage having an axis, the body including a light transmitting portion projecting generally radially from the fluid passage, the light transmitting portion being formed of a material that transmits electromagnetic radiation, the light transmitting portion including at least one interposing surface and at least one channel located closer to the axis of the fluid passage than the interposing surface, the channel defining a reflection surface generally disposed on a radially outward side of the channel.
3 Assignments
0 Petitions
Accused Products
Abstract
A pump set for use with a pump to deliver a supply of liquid to a patient. The feeding set has a conduit for the nutrient liquid and a safety interlock device associated with the conduit. The pumping apparatus has a pumping device and a control system for controlling operation of the pump. An electromagnetic radiation source is operatively connected to the control system of the pump for emitting an electromagnetic radiation signal in a direction for striking the safety interlock device of the feeding set. The safety interlock device is adapted to affect the direction of the electromagnetic radiation. An electromagnetic radiation detector is operatively connected to the control system for receiving the electromagnetic radiation signal when the direction is affected by the safety interlock device, and providing an indication to the control system that the feeding set conduit is properly positioned in the feeding pump.
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Citations
31 Claims
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1. A pump set for use in a pumping apparatus having a control system for controlling operation of the pumping apparatus to supply fluid to a patient through the pump set loaded in the pumping apparatus, a source of electromagnetic radiation operatively connected to the control system of the pumping apparatus for emitting electromagnetic radiation, an electromagnetic radiation detector operatively connected to the control system for providing an indication that the pump set is properly loaded on the pumping apparatus, the pump set comprising:
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a conduit for carrying fluid to a patient; an electromagnetic radiation propagation affecting member associated with the conduit and is adapted for mounting in the pumping apparatus in the path of the electromagnetic radiation from the source of electromagnetic radiation, the propagation affecting member comprising a body defining a fluid passage in communication with the conduit for passing fluid through the body, the fluid passage having an axis, the body including a light transmitting portion projecting generally radially from the fluid passage, the light transmitting portion being formed of a material that transmits electromagnetic radiation, the light transmitting portion including at least one interposing surface and at least one channel located closer to the axis of the fluid passage than the interposing surface, the channel defining a reflection surface generally disposed on a radially outward side of the channel. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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- 2. A pump set as set forth in 1 wherein the body has a generally axially facing surface, and the channel extends axially inward from the axially facing surface.
- 17. A safety interlock for use in a medical device having a control system for controlling operation of the medical device, a source of electromagnetic radiation operatively connected to the control system of the medical device for emitting electromagnetic radiation, an electromagnetic radiation detector operatively connected to the control system for providing an indication that the safety interlock is properly loaded on the medical device, the safety interlock comprising an electromagnetic radiation propagation affecting member associated with the conduit and adapted for mounting in the medical device in the path of the electromagnetic radiation from the source of electromagnetic radiation, the propagation affecting member comprising a body defining a fluid passage in communication with the conduit for passing fluid through the body, the fluid passage having an axis, the body including a light transmitting portion projecting generally radially from the fluid passage, the light transmitting portion being formed of a material that transmits electromagnetic radiation, the light transmitting portion including at least one interposing surface and at least one channel located closer to the axis of the fluid passage than the interposing surface, the channel defining a reflection surface generally disposed on a radially outward side of the channel.
- 18. A safety interlock as set forth in 17 wherein the body has a generally axially facing surface and the channel extends axially inward from the axially facing surface.
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31. A pumping system comprising:
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pumping apparatus having a control system for controlling operation of the pumping apparatus to supply fluid to a patient through a pump set loaded in the pumping apparatus, a source of electromagnetic radiation operatively connected to the control system of the pumping apparatus for emitting electromagnetic radiation, an electromagnetic radiation detector operatively connected to the control system for providing an indication that the pump set is properly loaded on the pumping apparatus;
the pump set comprising;a conduit for carrying fluid to a patient, an electromagnetic radiation propagation affecting member associated with the conduit and adapted for mounting in the pumping apparatus in the path of the electromagnetic radiation from the source of electromagnetic radiation, the propagation affecting member comprising a body defining a fluid passage in communication with the conduit for passing fluid through the body, the fluid passage having an axis, the body including a light transmitting portion projecting generally radially from the fluid passage, the light transmitting portion being formed of a material that transmits electromagnetic radiation, the light transmitting portion including at least one interposing surface and at least one channel located closer to the axis of the fluid passage than the interposing surface, the channel defining a reflection surface generally disposed on a radially outward side of the channel.
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Specification