BLOOD TRANSFER SHIELD AND METHODS OF USE
20230414450 ยท 2023-12-28
Inventors
Cpc classification
A61M2039/1083
HUMAN NECESSITIES
A61M2039/1088
HUMAN NECESSITIES
A61J1/20
HUMAN NECESSITIES
International classification
Abstract
Systems and methods for shielded fluid transfer are provided. A fluid transfer shield is provided to facilitate transferring fluid from a first container to a secondary container. The fluid transfer shield includes a shield having an exterior and defining an interior space, a first port extending from the exterior of the shield, the first port configured to be fluidly coupled to the first container, and a second port extending opposite the first port and into the interior space of the shield so that the shield laterally surrounds the second port, the second port configured to be fluidly coupled to the secondary container. A passageway is provided that extends between the first port and the second port to fluidly couple the first container and the secondary container when the first container is fluidly coupled to the first port and the secondary container is fluidly coupled to the second port.
Claims
1. A fluid transfer shield to facilitate transferring fluid from a first container to a secondary container, the fluid transfer shield comprising: a shield having an exterior and defining an interior space; a first port extending from the exterior of the shield, the first port configured to be fluidly coupled to the first container; a second port extending opposite the first port and into the interior space of the shield so that the shield laterally surrounds the second port, the second port configured to be fluidly coupled to the secondary container; and a passageway extending between the first port and the second port to fluidly couple the first container and the secondary container when the first container is fluidly coupled to the first port and the secondary container is fluidly coupled to the second port.
2. The fluid transfer shield of claim 1, wherein the second port includes a relief path to allow airflow from the interior space to or from at least one of the passage or the second port.
3. The fluid transfer shield of claim 2, wherein the relief path is formed by a pair of planar faces on opposing sides of the second port, the pair of planar faces configured to form a channel between an exterior surface of the second port and an interior surface of the secondary container when the secondary container is engaged with the second port.
4. The fluid transfer shield of claim 1, further comprising a flange extending radially from the exterior of the shield proximate to a base of the shield.
5. The fluid transfer shield of claim 4, wherein first and second support ribs extend from the exterior of the shield to the flange to rigidly support the flange.
6. The fluid transfer shield of claim 4, wherein a perimeter of fluid transfer shield that includes the shield and the flange adjacent to the base of the shield forms an oblong footprint.
7. The fluid transfer shield of claim 1, wherein the second port includes an interior surface that defines the passageway and an exterior surface, the exterior surface having a tapered geometry so that a distal end of the second port is narrower than a proximal end of the second port.
8. The fluid transfer shield of claim 1, wherein the first port includes a female Luer lock connector configured to receive a syringe having a male Luer lock connector as the first container to fluidly couple the syringe to the first port via the female Luer lock connector.
9. The fluid transfer shield of claim 1, wherein the second port extends between approximately 7 millimeters and 11 millimeters into the interior space of the shield and the shield defines a body height between approximately 16 millimeters and 24 millimeters.
10. The fluid transfer shield of claim 1, wherein an opening diameter of the shield is between approximately 14 millimeters and 22 millimeters and an overall height of the fluid transfer shield in an axial direction is between approximately 22 millimeters and 33 millimeters.
11. A blood transfer shield for fluidly coupling a syringe and a secondary container, the blood transfer shield comprising: a shield having a cylindrical body and a base that defines an opening at a first end of the cylindrical body; a passageway extending through the cylindrical body of the shield, the passageway formed at a second end of the cylindrical body opposite the base; and a first port that forms a first end of the passageway, the first port configured to securely engage the syringe to fluidly couple the syringe to the passageway.
12. The blood transfer shield of claim 11, further comprising a second port that forms a second end of the passageway, the second port laterally surrounded by the shield.
13. The blood transfer shield of claim 12, wherein the second port defines an exterior surface opposite the passageway, the exterior surface configured to be inserted into an opening of a secondary container to fluidly couple the secondary container with the passageway.
14. The blood transfer shield of claim 13, wherein the exterior surface includes a first pair of faces and a second pair of faces, the first pair of faces configured as curved surfaces that extend along the second port in an axial direction and the second pair of faces configured as flat surfaces that extend along the second port in the axial direction.
15. The blood transfer shield of claim 14, wherein the second pair of faces are configured to form an air relief channel with an opening of the secondary container when the secondary container is fluidly coupled with the passageway.
16. The blood transfer shield of claim 11, further comprising: a flange extending radially from the cylindrical body of the shield adjacent to the opening; and first and second buttresses extending downward from the second end of the cylindrical body to the flange.
17. The blood transfer shield of claim 11, wherein the shield comprises a semi-translucent polymer.
18. The blood transfer shield of claim 12, wherein the first port and the second port are each tapered so that a respective distal end is narrower than a respective proximal end of the first and second ports.
19. A method of transferring blood from a first container to a secondary container, the method comprising: drawing blood into the first container; fluidly coupling the first container to a first port of a blood transfer shield, the first port extending from an exterior surface of the blood transfer shield; fluidly coupling the secondary container to a second port of the blood transfer shield, the second port extending within an interior space defined by a lateral side wall of a shield of the blood transfer shield; and expelling blood from the first container into the secondary container via a passageway extending between the first port and the second port.
20. The method of claim 19, wherein fluidly coupling the first container to the secondary container includes twisting the first container relative to the blood transfer shield.
Description
BRIEF DESCRIPTION OF DRAWINGS
[0024] The disclosure will be better understood and features, aspects, and advantages other than those set forth above will become apparent when consideration is given to the following detailed description thereof. Such detailed description makes reference to the following drawings which may not be drawn to scale.
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DETAILED DESCRIPTION
[0047] It is to be understood that the present disclosure is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. The systems and methods described herein are capable of other configurations and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of including, comprising, or having and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Unless specified or limited otherwise, the terms mounted, connected, supported, and coupled and variations thereof are used broadly and encompass both direct and indirect mountings, connections, supports, and couplings. Further, connected and coupled are not restricted to physical or mechanical connections or couplings.
[0048] Also as used herein, unless otherwise specified or limited, directional terms are presented only with regard to the particular configuration and perspective described. For example, reference to features or directions as horizontal, vertical, front, rear, left, right, and so on are generally made with reference to a particular figure or example and are not necessarily indicative of an absolute orientation or direction. However, relative directional terms for a particular configuration may generally apply to alternative orientations of that configuration. For example, front and rear directions or features (or right and left directions or features, and so on) may be generally understood to indicate relatively opposite directions or features.
[0049] As used herein in the context of activities or engagement of components, unless otherwise specified or limited, manual refers to the use of human hands. In some cases, manual engagement or activity can include direct manual engagement or activity: i.e., engagement or activity directly conducted by a user's hands (e.g., a user grasping or manipulating an object by hand). In some cases, manual engagement or activity can include engagement or activity via a non-powered hand tool (e.g., pliers).
[0050] The following discussion is presented to enable a person skilled in the art to make and use configurations of the present disclosure. Various modifications to the illustrated configurations will be readily apparent to those skilled in the art, and the generic principles herein can be applied to other configurations and applications without departing from configurations of the present disclosure. Thus, configurations of the disclosure are not intended to be limited to configurations shown, but are to be accorded the widest scope consistent with the principles and features disclosed herein. The following detailed description is to be read with reference to the figures, in which like elements in different figures have like reference numerals. The figures, which are not necessarily to scale, depict selected configurations and are not intended to limit the scope of configurations of the disclosure. Skilled artisans will recognize the examples provided herein have many useful alternatives and fall within the scope of configurations of the disclosure
[0051] As noted above, in some instances, it may be necessary to transfer fluid, such as blood, from a syringe to a secondary container. In the practice of phlebotomy where a relatively small amount of blood is taken from a patient (e.g., pediatric or elderly phlebotomy), the obtained blood does not pass through a closed transfer system. Instead, donor blood is often extracted via a syringe. The donor blood can then be transferred to a secondary container for testing or transport, such as a microtainer (e.g., BD Microtainer) or a blood gas syringe. The transfer process from the donor syringe to the secondary container can expose the user (e.g., a healthcare worker) or the immediate environment to the blood via unwanted or unintentional blood spray. Other risks associated with the transfer process can include needle stick, which can increase the chances of blood borne pathogen exposure.
[0052] Configurations of the present disclosure can address these and other risks associated with blood transfer. Generally, configurations of the disclosure provide a fluid transfer shield. The fluid transfer shield can be configured as a blood transfer shield and can provide a fluid coupling between a first container and a second container. For example, a first container, such as a syringe (e.g., a donor syringe, a phlebotomy syringe, etc.) having blood contained therein can be coupled to a first port of the transfer shield and a secondary container, such as a microtainer, can be coupled to a second port of the transfer shield to fluidly couple the first container and the secondary container. The fluid transfer shield can allow blood from the first container to be safely deposited into the second container while generally reducing or containing unwanted blood spray.
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[0054] In the illustrated configuration, the shield 104 defines a generally cylindrical geometry. However, other geometries are possible, such as, for example, flared or conical. In this regard, the base 108 of the shield 104 is generally circular and the shield 104 defines an interior space 114 opposite the exterior 112. The body 102 further includes a first port 116 positioned and generally extending from the exterior 112 of the shield 104 and a second port 118 positioned and generally extending within the interior space 114 of the shield 104.
[0055] Also shown in
[0056] Opposite the base 108 of the shield 104, the first port 116 extends from a top 120 of the body 102. The first port 116 can be configured as a cylindrical projection with a tapered side wall. In some configurations, the first port 116 can include a Luer lock. In general, Luer locks can provide a standardized system of small-scale fluid fittings for making leak-free or leak-resistant connections between a male-taper fitting and a mating female part. Mating female Luer locks can often be found on medical laboratory instruments, including syringe tips (e.g., hypodermic syringe tips) needles, and stopcocks. In this regard, the first port 116 can include a female Luer lock connector configured to fluidly couple the first port 116 to a first container, such as a donor syringe. However, it should be appreciated that other connection types are possible, including geometries that provide a snap fit, an interference fit, a threaded connection, or other connections configured to provide a leak-free or leak-resistant coupling.
[0057] The second port 118 is fluidly coupled to the first port 116 and extends within the interior space 114 of the shield 104 opposite the first port 116. Notably, as further illustrated in
[0058] With continued reference to
[0059] In use, a secondary container, such as a test tube or microtainer can be secured to the second port 118 to receive fluid, such as blood, from a syringe coupled to the first port 116 via the passageway 128. In particular, the secondary container can be fluidly coupled to the second port 118 so that the second port 118 extends into an opening of the secondary container (i.e., the exterior surface 126 can be inserted into the secondary container). When the second port 118 is fluidly coupled to the secondary container, the second pair of faces 132 can provide a relief path (e.g., an opening, a channel, etc.). The relief path can effectively release air from the secondary container during a fluid transfer process so that the fluid flows smoothly (e.g., without a vacuum or pressure interruption) from a syringe into the secondary container.
[0060] With reference to
[0061] In general, the fluid transfer shield 100 can define certain geometric ratios that advantageously promote usability and functionality. For example, certain height and width dimensions, particularly height and width ratios, can provide a user with comfortable and intuitive grip position and orientation such that a user may be able to quickly and efficiently couple the fluid transfer shield 100 to a donor syringe and a secondary container. In one example, a height and width ratio of the fluid transfer shield 100 can promote single-handed use, such that a user can actuate a plunger of a donor syringe (e.g., via a thumb) coupled to the fluid transfer shield while simultaneously gripping the fluid transfer shield 100 with the same hand (e.g., index and middle fingers at the first and second flanges 106). In some embodiments, the height and width ratio of the shield 104 may be 1:1 to promote a certain grip, such as, for example, a thumb and a first finger can secure the fluid transfer shield 100 to a first container at the first port 116 and a second finger can help secure a secondary container to the fluid transfer shield at the second port 118.
[0062] Other advantageous dimensional ratios of the fluid transfer shield 100 can include the diameter of the base 108 of the shield 104 and the height of the shield 104 in combination with the length that the second port 118 extends into the interior space 114 of the shield 104. These and other ratios, for example, can provide a sufficient shielding zone so that blood or other fluid is transferred into a secondary container without spraying onto or near the user, while the overall fluid transfer shield 100 maintains a size to comfortably fit in and average-sized adult hand. In this regard, a ratio of the height of the shield 104 to the length of the secondary container may be preferably between approximately 1:3 and 1:2 so that about one third to one half of the secondary container is laterally covered by the shield 104 in the axial direction when coupled to the second port 118. However, in other embodiments, such as when a fluid transfer shield similar to the fluid transfer shield 100 is used in the transfer of urine, for example, only 10% of the length of a secondary container may be laterally surrounded by the shield 104 to sufficiently transfer fluid between first and second containers.
[0063] In this regard,
TABLE-US-00001 h.sub.1 (mm) h.sub.2 (mm) h.sub.3 (mm) d.sub.1 (mm) d.sub.2 (mm) d.sub.3 (mm) th.sub.1 (mm) w.sub.1 (mm) 9.5 18 27.5 4.31 4.31 18 1 34
[0064] The dimensions above refer generally to different heights, widths, and diameters of the fluid transfer shield 100. For example, h.sub.1 can correspond to the length that the second port 118 extends into the interior space 114 of the shield 104, h.sub.2 can correspond to the length of the passageway 128, h.sub.3 can correspond to the overall height of the fluid transfer shield 100, including the shield 104 and the first port 116, d.sub.1 can correspond to the diameter of the passageway 128 at a distal end of the first port 116, d.sub.2 can correspond to the diameter of the passageway 128 at a distal end of the second port 118, d.sub.3 can correspond to the opening diameter of the shield 104 at the base 108, th.sub.1 can correspond to the thickness of the body 102 at the top 120 of the fluid transfer shield 100, and w.sub.1 can correspond to an over width of the body 102 extending between each of the flanges 106 (i.e., in the longer direction of the oblong footprint). It should be appreciated that additional dimensions of the fluid transfer shield 100 can be interpolated from the dimensions outlined in
h.sub.b=h.sub.3h.sub.2+h.sub.1+th.sub.1
[0065] Referring now to
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[0067] In use, the user 144 can grip the shield 104 of the fluid transfer shield 100 at the exterior 112 on either sides of the flanges 106 and support webs 110. The general oblong shape of the fluid transfer shield 100 near the base 108 of the shield 104 provides a grip geometry that can be conducive to securely coupling the syringe 146 and the first port 116. For example, the flanges 106 can provide a point of leverage when the user rotates the fluid transfer shield 100 relative to the syringe.
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[0072] Like the fluid transfer shield 100, the shield 204 of the fluid transfer shield 200 laterally surrounds the second port 218, which extends into an interior space of the shield opposite the first port 216. The fluid transfer shield 200 can be operated in substantially the same manner as the fluid transfer shield 100, and can be used with first and second containers similarly to those illustrated in
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[0074] With reference to
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[0076] Further illustrated in each of
[0077] Thus, while the invention has been described above in connection with particular configurations and examples, the invention is not necessarily so limited, and that numerous other embodiments, examples, uses, modifications and departures from the embodiments, examples and uses are intended to be encompassed by the claims attached hereto. The entire disclosure of each patent and publication cited herein is incorporated by reference, as if each such patent or publication were individually incorporated by reference herein.