Patent ID: 11957465
Assignee: REDDROP DX, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. An apparatus comprising:
a blood collection module comprising:
a proximal portion comprising a vacuum generation chamber formed in a base, a vacuum piston, a precompressed volume expansion spring, and an enclosure with a slot for a slide latch in a top surface of the enclosure relative to the base;
a distal portion comprising a blood collection chamber formed in the base and configured to collect blood from a collection site in skin of a subject;
a concave mid portion formed in the enclosure between the proximal portion and the distal portion of the enclosure to facilitate secure holding of the blood collection module between two digits of a hand, the concave mid portion further comprising a pressure equalization channel formed in the base and configured to distribute reduced air pressure generated within the vacuum generation chamber to the blood collection chamber, and to a transfer module when the transfer module is coupled to the blood collection module;
a sealing surface at a bottom surface of the base that is configured to stably seal the blood collection module to the skin around the collection site;
a lancet carrier disposed within the distal portion and comprising a plurality of linearly-arranged lancet strips;
the slide latch with a top portion comprising a tab that protrudes up through the slot and a bottom portion of the slide latch comprising a plurality of blocking elements that unblock an upward expansion relative to the base, of a precompressed collar spring and of the precompressed volume expansion spring in response to repositioning of the plurality of blocking elements via a sliding motion of the slide latch,
wherein, in response to a sliding motion of the tab of the slide latch through the slot to a first predetermined distance in a distal direction the precompressed collar spring is unblocked from expanding upward relative to the base, and in response triggers a lancet carrier spring to fire the lancet carrier with the plurality of linearly-arranged lancet strips to momentarily puncture and retract from a plurality of rows of blood extraction slits in the skin of the subject at the collection site,
wherein, in response to a sliding motion of the tab of the slide latch through the slot to a second predetermined distance in the distal direction, the precompressed volume expansion spring that biases the vacuum piston is unblocked from expanding upward relative to the base and in response begins a vacuum generation of the reduced air pressure within the vacuum generation chamber that is distributed to the blood collection chamber, and to the transfer module when the transfer module is coupled to the blood collection module; and
an angled transfer port disposed at the distal portion of the blood collection module and configured to allow the blood to flow from the collection site through a non-microfluidic blood flow channel with greater than submillimeter channel dimensions to the transfer module when coupled, the angled transfer port extending outward from the blood collection module and being angled away from the subject at an acute angle of between 10 and 45 degrees relative to the sealing surface that seals the base to the skin of the subject such that when the transfer module is coupled, an outer wall of the transfer module is also angled away from the skin of the subject at the acute angle of between 10 and 45 degrees relative to the sealing surface,
wherein, in response to the plurality of rows of blood extraction slits being produced, the blood and components therein are guided to flow from an opening in the sealing surface through the non-microfluidic blood flow channel to the transfer module when coupled via the angled transfer port.