Blood collection tube holder with discharge needle displacement member
Inventors
Assignees
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Publication Number
US-11000217-B2
Publication Date
2021-05-11
Expiration Date
Abstract
A medical device configured as a blood collection tube holder, the device having a body with two spaced-apart, oppositely facing, coaxially aligned needles including a forwardly facing venipuncture needle and a rearwardly facing fluid discharge needle, the two needles being held by first and second needle holders separated by a compressible fluid seal defining part of a fluid path between the two needles and the two needle holders. The body also includes a discharge needle displacement member that is manually repositioned following removal of the last blood tube holder so that the discharge needle displacement member contacts the second needle holder and displaces the second needle holder and the fluid discharge needle laterally inside the body to initiate retraction of the venipuncture needle into a rearwardly projecting needle retraction chamber.
Core Innovation
The blood collection tube holder is configured for use with a stoppered blood collection tube to draw and collect blood. It includes two spaced-apart, oppositely facing, coaxially aligned needles inside a molded plastic body. A forwardly projecting venipuncture needle is held by a rearwardly biased needle holder, and a rearwardly facing fluid discharge needle is held by a second needle holder.
Following use to draw and collect blood, manual pressure on the touch surface moves the discharge needle displacement member transversely to the fluid flow path. This displaces the fluid discharge needle laterally and aligns the rearwardly biased needle holder with the needle retraction chamber, initiating retraction of the venipuncture needle. The chamber closed end releasably engages the laterally extending flange using a projection and aperture.
Claims Coverage
The relevant claims include one independent claim and two dependent claims covering four inventive features.
Molded body with opposed coaxial needles
A molded plastic body holds two spaced-apart, oppositely facing, coaxially aligned needles: a forwardly projecting venipuncture needle held by a rearwardly biased needle holder and a rearwardly facing fluid discharge needle held by a second needle holder.
Transverse displacement member initiating needle retraction
A discharge needle displacement member slidably engages the body and has a rearwardly projecting needle retraction chamber and a touch surface. After blood collection, manual pressure moves the member transversely to the fluid flow path, displaces the fluid discharge needle laterally, and aligns the needle holder with the retraction chamber to initiate retraction of the venipuncture needle.
Releasable engagement of the flange and chamber
The laterally extending flange and the closed end of the needle retraction chamber are configured to be releasably engageable prior to and during use of the holder to draw and collect blood.
Projection-and-aperture engagement
A dependent claim specifies a rearwardly facing projection on the closed end of the needle retraction chamber that releasably engages a cooperatively sized and aligned aperture in the laterally extending flange.
The claims cover the holder opposed coaxial needles, its manually operated transverse displacement member that initiates venipuncture needle retraction, and releasable engagement between the chamber end and flange, including a projection-and-aperture arrangement.
Stated Advantages
The described device reduces needle-stick and blood-borne pathogen exposure.
Documented Applications
The blood collection tube holder is configured for use with a stoppered blood collection tube to draw and collect blood.
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