Abbott Laboratories Corporation

Aloka Co., Ltd.

Masaaki Takeda

Yuko Kato

Hitomi Katagi

Junichi Kawanabe

Gregory A Bielarczyk

Rosie L Magee

Brent A Pelletier

Takayoshi Saito

In an improvement of a nozzle tip for a pipetting apparatus which is adapted to be removably attached to a nozzle base of the pipetting apparatus, the nozzle tip includes a head portion having an opening adapted to fit onto the nozzle base, a cylindrical portion extending downward from the head portion, a tip portion provided on the lower side of the cylindrical portion and having a tip opening for aspirating and dispensing a liquid, the tip portion having a diameter smaller than the diameter of the cylindrical portion, and a step portion formed between the cylindrical portion and the tip portion. A plurality of fins are integrally formed from the lower end portion of the cylindrical portion to the peripheral surface of the tip portion through the step portion with the same spacing in a circumferential direction for making the insertion of the nozzle tip into an upper opening of a target container smoothly and for structurally reinforcing the step portion.

Nozzle tip for pipetting apparatus

Pipetting apparatus with clot detection

Embodiments described herein provide a pipetting apparatus with leak detection and a method for detecting a leak. In one embodiment, an automatic pipetting apparatus comprises a nozzle having a lower end portion through which a fluid sample is aspirated and dispensed by changes in air pressure supplied to the nozzle. A piping system operatively connects the nozzle to a pump for supplying the air pressure to the nozzle. A pressure sensor is operatively connected with the piping system for measuring internal pressure in the piping system. An XYZ robot is operatively connected with the nozzle for three-dimensionally moving the nozzle between an aspirating position of the fluid sample and a dispensing position. A leak detector is operatively connected with the pressure sensor for detecting a leak in the piping system based upon a measured result obtained by measuring the internal pressure in the piping system with the pressure sensor while the nozzle, which has aspirated a predetermined volume of the fluid sample, is being moved between the aspirating position and the dispensing position by the robot.

Automatic pipetting apparatus with leak detection and method of

Liquid aspirating method

Pipetting apparatus

Method for pipetting a blood sample

Growing community of inventors

Mitaka, Japan

Masaaki Takeda