Patent Application
20140004023
The present invention relates generally to functional pipette tips and, more particularly, to devices for storing and transporting the same.
Pipetters having a manually or automatically driven piston are configured to aspirate and dispense small volumes of fluid with relatively high accuracy. Conventionally, a disposable tip is placed onto an aspirating end of the pipetter to reduce cross-contamination of sample, reagents, and so forth by replacing the tip after each use.
More recently, tips have been provided functionality. That is, some tips include filters or membranes to filter the aspirated fluid while it is dispensed. In still other tips, the walls lining a lumen within the tip are coated with one or more functional groups or are otherwise treated to segregate dispersants, solutes, particulates, and/or functionally-active molecules from the fluid. In any case, these functionalized tips provide functions in addition to the aspiration/dispensing function performed by conventional pipette tips.
However, some of these functional tips require specific storage conditions in order to maintain the intended functionality. For instance, some functional tips may require dry atmosphere or specified percentage humidity. Other functional tips may require a solvent bath to maintain functionality or even a water bath to maintain a minimum humidity, particularly while the tips are stored within the drying environment of a refrigerator.
Additionally, the functional pipettes may require special handling to reduce contact or close proximity with other pipettes or that contain fragile elements therein (such as a ceramic filter or magnetic particles specifically arranged for an intended purpose) that may break or become dislodged at impact if dropped or if jarred by an adjacent pipette tip or tray.
As a result, there remains a need for devices to ensure the safe transport of functional pipette tips. The device should promote ease of use by providing access to the pipette tips while protecting the functionality of the tips during storage and/or shipment.
The present invention overcomes the foregoing problems and other shortcomings, drawbacks, and challenges of known conventional pipette tip packaging. While the invention will be described in connection with certain embodiments, it will be understood that the invention is not limited to these embodiments. To the contrary, this invention includes all alternatives, modifications, and equivalents as may be included within the spirit and scope of the present invention.
According to one embodiment of the present invention, a blister package for a plurality of pipette tips comprises a support block with a plurality of molded pockets that extends into the support block from a first wall. The plurality of pockets is configured to receive the plurality of pipette tips. At least one reservoir located within the support block at a distal end of and in fluid communication with at least one of the plurality of pockets. A closure member closes the plurality of pockets within the support block.
Another embodiment of the present invention is directed to a blister package that includes a support block having a plurality of molded pockets therein. Each of the plurality of molded pockets extend into the support block from a first wall and receives a respective one of the plurality of pipette tips. A closure member, comprising a sealing strip, is configured to fluidically seal the plurality of pockets within the support block.
Still another embodiment of the present invention is directed to a pipette tip blister package that includes a plurality of pipette tips having an active antibody associated therewith and a support block. The support block includes a joined first and second pieces, each of which includes an inner surface configured to be positioned adjacent to the inner surface of the other piece and a plurality of cavities extending into the inner surface. When the first and second pieces are joined, respective ones of the pluralities of cavities form a pocket configured to support a pipette tip therein. At least one reservoir is located within the support block, at a distal end of and in fluid communication with the pockets. The reservoir includes a buffer solution therein that is configured to maintain the activity of the antibody. A closure member closes the pockets within the support block.
One embodiment of the present invention is directed to a blister package that includes a support block. A plurality of molded pockets extend from a first wall. There is a recess within the first wall such that the plurality of pockets extends into the support block from the recess. A closure member is received by the recess and configured to close the plurality of pockets.
The above and other objects and advantages of the present invention shall be made apparent from the accompanying drawings and the descriptions thereof.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present invention and, together with a general description of the invention given above, and the detailed description of the embodiments given below, serve to explain the principles of the present invention.
Turning now to the figures, and in particular to
With reference now to both of
Each of the front and back pieces 26, 28 includes a top wall 30a, 30b, a bottom wall 32a, 32b, and two side walls 34a, 36a, 34b, 36b therebetween with a laterally-extending lip 38a, 38b surrounding the perimetric edge of the walls 30a, 30b, 32a, 32b, 34a, 36a, 34b, 36b. Molded, inner walls 40a, 40b are recessed with respect to the lips 38a, 38b and include pluralities of cavities 42a, 42b formed while molding the front and back pieces 26, 28. Respective ones of the cavities 42a, 42b, when the first and second pieces 26, 28 are joined, form a pocket 43 that is shaped and sized to receive a pipette tip 12. Accordingly, the support block 29 would include a plurality of pockets 43, formed by the joined pluralities of cavities 42a, 42b. The cavities 42a, 42b may extend outwardly from the inner walls 40a, 40b toward a plane defined by the lips 38a, 38b of the front and back pieces 26, 28 and are hollow or concaved with respect to the inner surfaces 44a, 44b of the front and back pieces 26, 28.
It would be readily appreciated from the disclosure herein that the front and back pieces 26, 28 may be molded to package any number of pipette tips, the pipette tips being various shapes and sizes. Furthermore, it would be readily appreciated that the designation of front and back pieces 26, 28 is arbitrary and for purposes of discussion herein. In fact, envisaged embodiments may have a single mold such that two pieces resulting from the same mold may be used as front and back pieces 26, 28. Further still, and although not specifically shown, it would be readily appreciated that the blister packet 10 may be molded as a unitary structure.
The front and back pieces 26, 28 of the blister pack 10 may be joined together, with the inner surfaces 44a, 44b proximately positioned and facing one another, by one or more joining techniques, including for example, ultrasonic welding, epoxy, and polymeric cements. If desired, one or more bubbles 50 or indicia may be provided to ensure proper alignment of the front piece 26 with the back piece 28 during the joining process.
With reference now to
It would be understood, from the disclosure and teachings provided herein, the reservoir 56 may be formed as an extension of the pocket 43 and does not include residual volume of conventional packages of which the pipette tip does not expand or extend the full length of the pocket. For example, in one embodiment, each reservoir 56 extends from a tapered distal end of a respective pocket 43, with the reservoir 56 having a generally constant diameter along its length.
Further to the use of fluids to protect pipette tip functionality, the blister pack 10 further includes a closure member 60, specifically shown in one embodiment as a sealing strip 62 that is configured to fluidically seal the plurality of pipette tips 12 within the support block 29. In illustrative embodiment of
The adhesive strip 54 then forms the fluid-tight seal between the cover strip 48 and the support block 29. The adhesive strip 54, one example of which being vinyl tape, may be applied to and extend around the support block 29, including the top, bottom, and side walls 30a, 30b, 32a, 32b, 34a, 36a, 34b, 36b and between the lips 38a, 38b. While various adhesives may be used, vinyl tape provides the benefit of being highly conformable and easily and cleanly removable without leaving residue that retains or is itself, contaminants. The adhesive strip 54 may be used in a manner similar to a hinge in that the adhesive strip 54 with the cover strip 48 may be removed from the plurality of pipette tips 12 but remain operably coupled to the support block 29 via adhesive strip 54 attached to the side walls 34a, 36a, 34b, 36b.
In other embodiments of the present invention, although not specifically illustrated herein, one of the front and back pieces 26, 28 may include a closure member 60 that is a molded and hinged cover. The hinged cover may then be configured to move between a sealed position, in which the hinged cover resides over the plurality of pipette tips and forms a fluid-tight seal with the support block 29, and a vented position, in which the hinged cover is rotated away from the plurality of pipette tips.
In still other embodiments of the present invention, each of the top walls 30a, 30b of the front and back pieces 26, 28 may include a shelf 46a, 46b such that when the inner surfaces 44a, 44b are positioned together, the shelves 46a, 46b form a recess that is in communication with each of the pockets 43. The recess 46a, 46b is configured to receive the cover strip 48 such that the cover strip 48 is flush with the top walls 30a, 30b.
As result of the sealing strip 62 (for example, the cover strip 48 and the adhesive strip 54) the blister package 10 is suitable for storage under ambient environment or under refrigeration, for example, down to about 4° C., without the pipette tip 12 being subject to drying out or contamination.
In use, and with reference now to
In other embodiments of the present invention, although not specifically shown herein, a multi-channel pipetter may be used rather than a single channel pipetter, as shown. In that regard, multi-channel pipetters may include two-channels or more, but more typically will be no greater than the number of tips provided within the blister package. To facilitate use with multi-channel pipetters, the tips may be constructed or molded with a spacing that is in accordance with the Society for Biomolecular Standards (“SBS”) and/or with dimensions that are customary to multi-channel pipetters and/or robotic systems, for example, 9 mm multi-pipette nose spacing.
While the present invention has been illustrated by description of various embodiments, and while those embodiments have been described in some detail, they are not intended to restrict or in any way limit the scope of the disclosed invention. Additional advantages and modifications will readily appear to those skilled in the art. The various features of the present invention may be used alone or in any combination depending on the needs and preferences of the user. This has been a description of the present invention, along with methods of practicing the present invention as currently known.
