ADJUSTABLE CONNECTOR AND DEAD SPACE REDUCTION
First Claim
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1. An analyte monitoring system comprising:
- a fluidic system in fluid communication with a source of bodily fluid in a patient, said fluidic system being configured to obtain a sample of bodily fluid from the source;
a spectroscopic sample cell in fluid communication with said fluidic system and configured to receive said sample of bodily fluid;
an analyte detection system coupled to the spectroscopic sample cell through a transparent window, said analyte detection system spectroscopically analyzing the sample of bodily fluid or a component of the sample of bodily fluid;
a fluid infusion system; and
a patient connector comprising a spring loaded self adjusting extender tube,wherein the analyte detection system is configured to estimate the concentration of an analyte in said sample of the bodily fluid or a component of the sample of the bodily fluid;
wherein the fluidic system is fluidically connected to the source of bodily fluid in the patient through the patient connector, said patient connector configured to provide a continuous flow path.
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Abstract
Methods and systems for determining the concentration of one or more analytes from a sample such as blood or plasma are described. The systems described herein can be configured to withdraw a certain volume of sample from a source of bodily fluid, direct a first portion of the withdrawn sample to an analyte monitoring system and return a second portion of the sample to the patient. The analyte monitoring system can be connected to the source of bodily fluid via a connector that is configured to maintain uniform velocity across the connector and reduce the dead space volume.
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Citations
29 Claims
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1. An analyte monitoring system comprising:
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a fluidic system in fluid communication with a source of bodily fluid in a patient, said fluidic system being configured to obtain a sample of bodily fluid from the source; a spectroscopic sample cell in fluid communication with said fluidic system and configured to receive said sample of bodily fluid; an analyte detection system coupled to the spectroscopic sample cell through a transparent window, said analyte detection system spectroscopically analyzing the sample of bodily fluid or a component of the sample of bodily fluid; a fluid infusion system; and a patient connector comprising a spring loaded self adjusting extender tube, wherein the analyte detection system is configured to estimate the concentration of an analyte in said sample of the bodily fluid or a component of the sample of the bodily fluid; wherein the fluidic system is fluidically connected to the source of bodily fluid in the patient through the patient connector, said patient connector configured to provide a continuous flow path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An accommodating connector configured to reduce leaks and improve fluid flow between a medical device and a source of body fluid, the accommodating connector comprising:
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a first inlet/outlet; a second inlet/outlet; and a force-exerting structure having a stiffness; wherein the accommodating connector is configured to connect to a mating connector that is attached to a source of bodily fluid; and wherein the force-exerting structure is configured to exert a force on an inner portion of the mating connector in a contact region and firmly seat the first or second inlet/outlet against the inner portion of the mating connector such that a dead space between the first or second inlet/outlet and the inner portion of the mating connector is reduced. - View Dependent Claims (20, 21, 22, 23)
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24. A system for eliminating dead space and improving fluid flow through medical connectors, the system comprising:
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an outer portion comprising at least one standard-facing end; an inner portion comprising an extended flow passageway; and an actuating member that is situated between the outer and the inner portion and configured to move the inner portion toward or away from the outer portion thereby causing the extended flow passageway to approach an inner portion of any of a variety of standard connectors having different depths.
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25. A extendable medical connector for reducing dead space and improving fluid flow, the connector comprising:
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a standard-facing end comprising; a standard-facing outer portion; and a standard-facing inner portion comprising an extended flow passageway; an opposite end comprising; an opposite outer portion comprising a first pushing surface; and a receiving opening configured to receive a regular flow passageway; the standard-facing outer portion and the opposite outer portion together comprising an outer housing; a second pushing surface facing the first pushing surface; the extended flow passageway configured to connect to the regular flow passageway to form a combined flow passageway configured to move with the second pushing surface; a force exerting member is situated between the first and second pushing surfaces and configured to simultaneously exert a force against both of these pushing surfaces to thereby urge the first pushing surface (along with the outer housing) away from the second pushing surface (along with the combined inner portion), thereby causing the extended flow passageway to approach—
and the inner portion of the standard-facing end to more firmly seat against—
an inner portion of any of a variety of standard connectors having different depths.
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26. A penetrating connector configured to be positioned along a fluid line between a medical device and a source of body fluid to allow fluid flow while reducing leaks, the connector comprising
first and second openings at either end of the connector, the openings configured to: -
allow fluid communication—
through the connector—
between the medical device and the source of body fluid; andcooperate with openings of other connecting devices to assist in forming mating complexes at either side end of the connector, at least one of the mating complexes having an enlarged space; an extender tube having a first cross-sectional width, the extender tube configured to; convey the fluid along a fluid pathway that extends at least part of the way between the first and second openings; and penetrate through at least one of the mating complexes while bypassing the enlarged space, which has a cross sectional width that is wider than the first cross-sectional width; confine fluid within its walls to prevent the fluid from flowing out into the enlarged space of the mating complex; and abut an opening of one of the other connecting devices such that fluid flows directly between the extender tube and the opening of the other connecting device; and a force-exerting structure that uses a resilient property to improve a seal, the seal located where the extender tube abuts the opening of the other connecting device. - View Dependent Claims (27, 28, 29)
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Specification