Blood contaminant sequestration device with one-way air valve and air-permeable blood barrier with closure mechanism
Inventors
Rogers, Bobby E. • Kang, Gino • Stroup, David Karl • Cochran, Jonas Dean • Deptala, Arthur • Detloff, John • Pogue, Lonnie • Macowski, Brian
Assignees
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Publication Number
US-11744494-B2
Publication Date
2023-09-05
Expiration Date
Abstract
Blood sample optimization systems and methods are described that reduce or eliminate contaminates in collected blood samples, which in turn reduces or eliminates false positive readings in blood cultures or other testing of collected blood samples. A blood sample optimization system can include a blood sequestration device located between a patient needle and a sample needle. The blood sequestration device can include a sequestration chamber for sequestering an initial, potentially contaminated aliquot of blood, and may further include a sampling channel that bypasses the sequestration chamber to convey likely uncontaminated blood between the patient needle and the sample needle after the initial aliquot of blood is sequestered in the sequestration chamber.
Core Innovation
The invention describes a blood sample optimization device that includes an inlet port, a junction coupled with the inlet port, and a chamber connected with the inlet port via the junction. The chamber is configured to allow air to be displaced by a first portion of blood entering the inlet port, through the junction, and into the chamber, and to at least temporarily contain some of the first portion of blood therein.
The device includes an outlet port and a sampling channel with a proximal end connected with the inlet port via the diverter junction and a distal end connected with the outlet port. The sampling channel is configured to convey subsequent portions of blood from the junction to the outlet port after the first portion of blood has entered the chamber, so that a second portion of blood flows into the sampling channel and to the outlet port.
The housing houses and defines the inlet port, the junction, the outlet port, the chamber, and the sampling channel. Further refinements described in the partial content include a vent configured to allow air to be displaced and a closure configured to inhibit air from entering after the first portion of blood displaces the air, as well as embodiments that include a moving part shifting between positions and being held by a locking mechanism until the chamber is filled.
Claims Coverage
The partial content includes three independent claims (clm-00001, clm-00015, and clm-00030). Across these claims, the coverage focuses on air displacement by a first portion of blood in a chamber, subsequent blood conveyed through a sampling channel to an outlet port, and additional vent-closure and position-changing/locking features.
Air displacement in a chamber with a diverter junction
A blood sample optimization device includes an inlet port, a junction coupled with the inlet port, and a chamber connected with the inlet port via the junction, where the chamber is configured to allow air to be displaced by a first portion of blood entering the inlet port, through the junction, and into the chamber.
Subsequent blood conveyed through a sampling channel to an outlet port after first-portion entry
The device includes an outlet port and a sampling channel having a proximal end connected with the inlet port via the diverter junction and a distal end connected with the outlet port, where the sampling channel is configured to convey subsequent portions of blood from the junction to the outlet port after the first portion of blood has entered the chamber.
Housing defining inlet, junction, outlet, chamber, and sampling channel
A housing houses and defines the inlet port, the junction, the outlet port, the chamber, and the sampling channel.
Vented chamber with subsequent portion flowing into the sampling channel
A housing defining an inlet port, a junction coupled with the inlet port, an outlet port, a chamber connected with the junction, and a sampling channel connected with the junction and the outlet port, where the chamber has a vent configured to allow air to be displaced by a first portion of blood entering the inlet port, through the junction, and into the chamber such that a second portion of blood flows into the sampling channel and to the outlet port.
Temporarily containing first portion of blood in the chamber while displacing air
A blood sample optimization device includes a chamber configured to at least temporarily contain some of the first portion of blood therein while the chamber is configured to allow air to be displaced by a first portion of blood entering the inlet port and into the chamber.
Vent closure and anti-air reentry as chamber air displacement feature
A chamber configured to allow air to be displaced by a first portion of blood entering the inlet port and into the chamber, together with the vent having a closure configured to inhibit air from entering the chamber after a first portion of blood displaces the air.
Bypassing the chamber for subsequent blood portions via junction routing and a sampling channel
A junction configured to route a first portion of blood into a chamber and route a second portion of blood through a sampling channel by bypassing the chamber.
Locking mechanism governing movement of a moving part between positions
A blood sample optimization device includes a locking mechanism that holds a moving part in a first position until a chamber is filled, and is configured to be overcome to move the moving part to a second position by providing force to overcome the lock.
Across clm-00001, clm-00015, and clm-00030, the independent-claim core is the combination of a chamber that displaces air by a first portion of blood and a sampling channel that conveys subsequent portions of blood to an outlet port after that first portion enters the chamber, all defined by a housing. Dependent refinements in the partial content additionally emphasize vent closure to inhibit air reentry, junction routing that bypasses the chamber for subsequent blood, and a movable part held by a locking mechanism until the chamber is filled.
Stated Advantages
Documented Applications
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