Ergonomic pipette tip and adapters
First Claim
1. An ergonomic pipette tip comprising:
- at least one upper portion made from a first material having an inwardly facing sealing surface defining a central receiving cavity and providing a surface for sealing engagement with a pipetter barrel inserted into said receiving cavity, at least one mechanical stop extending inwardly from said sealing surface, said at least one mechanical stop having an upper face for limiting downward penetration of the pipetter barrel into said receiving cavity, and at least one lower portion made from a second material having a pipette tip cavity in communication with said receiving cavity including an apex end for receiving fluid, said pipette tip cavity for holding said fluid.
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Accused Products
Abstract
An ergonomically designed pipette tip that can be securely mounted to a barrel of a pipetter yet is designed to substantially reduce the axial force necessary to install and eject the pipette tip from the pipetter. An improved pipette tip that includes the addition of a second elastomeric material and cooperative means for insuring uniform interference and depth of penetration of the pipetter barrel as successive barrels are inserted and ejected. Also disclosed is an improved multiple-tip configuration with similar features as the ergonomic pipette tip that can be mounted to multiple barrels of a multi-pipetter as one tip instead of 8 or 12 individual tips. The secondary elastomeric material allows for better sealing and eliminates alignment issues, high installation and ejection requirements while reducing the hand and thumb forces that due to repeated use will sometimes result in repetitive stress injury.
64 Citations
25 Claims
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1. An ergonomic pipette tip comprising:
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at least one upper portion made from a first material having an inwardly facing sealing surface defining a central receiving cavity and providing a surface for sealing engagement with a pipetter barrel inserted into said receiving cavity, at least one mechanical stop extending inwardly from said sealing surface, said at least one mechanical stop having an upper face for limiting downward penetration of the pipetter barrel into said receiving cavity, and at least one lower portion made from a second material having a pipette tip cavity in communication with said receiving cavity including an apex end for receiving fluid, said pipette tip cavity for holding said fluid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An ergonomic pipette tip comprising:
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at least one elastomeric upper portion having an inwardly facing sealing surface, at least one mechanical stop, and an inwardly extending flange, said sealing surface defining a central receiving cavity, said sealing surface for sealing engagement with a pipetter barrel inserted in said receiving cavity, said at least one mechanical stop extending inwardly from said sealing surface and having a lower face, said flange having an upwardly facing top surface spaced from and in substantially parallel alignment with said lower face of said mechanical stop, and at least one lower portion having a pipette tip cavity in communication with said receiving cavity, said lower portion having an outwardly extending top lip disposed in locking engagement between said lower face of said mechanical stop and said top surface of said flange forming a mechanical locking joint between said upper and lower portions. - View Dependent Claims (18)
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19. An ergonomic pipette tip comprising:
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at least one upper portion having a longitudinal axis, an inwardly facing sealing surface, and an inside bottom edge portion, said sealing surface defining a central receiving cavity, said sealing surface for sealing engagement with a pipetter barrel disposed in said receiving cavity, said inside bottom edge portion having an inwardly facing surface disposed generally in parallel relation to said longitudinal axis and a bottom face disposed generally in perpendicular relation to said longitudinal axis, and at least one lower portion having a pipette tip cavity and an upper edge portion, said pipette tip cavity in communication with said receiving cavity, said upper edge portion having a top face and an outward facing surface, said top face coupled to said bottom face of said upper portion, and said outward facing surface coupled to said inwardly facing surface of said upper portion, forming thereby a joint between said upper and lower portions. - View Dependent Claims (20, 21)
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22. An ergonomic pipette tip device comprising:
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at least one elastomeric upper portion each having an inwardly facing sealing surface defining a center cavity, said sealing surface for sealing engagement with a pipetter barrel inserted into said center cavity; and
a plurality of substantially rigid lower portions each having a pipette tip cavity in communication with said center cavity, at least one of said lower portions having an upper edge portion having a top face, said top face having an inner portion extending inwardly from said sealing surface of said upper portion, said inner portion forming a perimeter ledge for limiting downward penetration of the pipetter barrel into said center cavity of said upper portion. - View Dependent Claims (23, 24, 25)
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Specification