Multi-chamber blood collection device and related systems and methods
A blood collection device may include a tubular container, which may include a closed end and an open end opposite the closed end. The blood collection device may include a plug sealing the open end and a partition within the tubular container. The partition may separate the tubular container into a first chamber and a second chamber. The first chamber and the second chamber may be evacuated such that a pressure within the first chamber and a pressure within the second chamber are lower than ambient pressure and equal to each other. In response to blood being drawn into the first chamber, the pressure within the first chamber may increase, and the partition may slide towards the closed end such that a size of the first chamber increases and a size of the second chamber decreases.
1. A blood collection device, comprising:
a tubular container comprising a closed end and an open end opposite the closed end;
a plug sealing the open end; and
a partition and another partition within the tubular container, wherein the partition and the other partition separate the tubular container into a first chamber, a second chamber, and a third chamber,
wherein the first chamber is disposed between the plug and the partition, the second chamber is disposed between the partition and the other partition, and the third chamber is disposed between the other partition and the closed end,
wherein the first chamber, the second chamber, and the third chamber are evacuated such that a pressure within the first chamber, a pressure within the second chamber, and a pressure within the third chamber are lower than ambient pressure,
wherein the partition and the other partition are impermeable to air and the first chamber, the second chamber, and the third chamber are airtight, and
wherein in response to coupling the blood collection device to a blood collection set the pressure within the first chamber is configured to increase, and the partition is configured to slide toward the closed end such that the size of the first chamber increases and the size of the second chamber decreases.
2. A method of blood collection, comprising:
inserting a needle of a blood collection set into a vasculature of a patient, wherein the blood collection set comprises:
a hub;
the needle extending distally beyond the hub;
an adapter, comprising a cannula and an elastomeric sheath, wherein the elastomeric sheath is coupled to the adapter and envelopes the cannula;
an extension tube, comprising a distal end coupled to the hub and a proximal end coupled to the adapter;
coupling a blood collection device to the blood collection set by inserting the cannula into the blood collection device, wherein the blood collection device comprises:
a tubular container comprising a closed end and an open end opposite the closed end;
a plug sealing the open end; and
a partition and another partition within the tubular container, wherein the partition and the other partition separate the tubular container into a first chamber, a second chamber, and a third chamber,
wherein the first chamber is disposed between the plug and the partition, wherein the second chamber is disposed between the partition and the other partition, and the third chamber is disposed between the other partition and the closed end,
wherein the first chamber, the second chamber, and the third chamber are evacuated such that a pressure within the first chamber, a pressure within the second chamber, and a pressure within the third chamber are lower than ambient pressure, and
wherein the partition and the other partition are impermeable to air and the first chamber, the second chamber, and the third chamber are airtight; and
wherein in response to coupling the blood collection device to the blood collection set the pressure within the first chamber increases, and the partition slides towards the closed end such that the size of the first chamber increases and the size of the second chamber decreases.