Nozzle apparatus for sampling and dispensing specimen

Details Nozzle apparatus for sampling and dispensing specimen Nozzle apparatus for sampling and dispensing specimen

1996-08-30

1998-03-31

Buiz, Michael

Measuring and testing

Sampler, sample handling, etc.

Capture device

73863, 73864, 7386411, 7386473, G01N 3510

Patent

active

057341141

ABSTRACT:
A nozzle apparatus for sampling-dispensing a specimen comprises a nozzle body and an annular elastic bag made of an elastic member and formed to cover the outer circumferential surface at the distal end portion of the nozzle body such that fluid such as air can be sealed in the inner space of the elastic bag. When a specimen sampling-dispensing tip is mounted to the nozzle apparatus, fluid is supplied into the elastic bag, with the distal end portion of the nozzle body kept inserted into a mounting section of the tip, so as to expand the elastic bag such that the outer circumferential surface of the bag is pressed against the inner circumferential surface of the mounting section of the tip so as to ensure a hermetic contact therebetween. When the tip is detached from the nozzle body, the fluid within the elastic bag is discharged so as to shrink the bag and, thus, to cause the outer circumferential surface of the bag to be moved away from the inner circumferential surface of the mounting section of the tip, thereby to move the distal end portion of the nozzle body from within the mounting section of the specimen sampling-dispensing tip.

REFERENCES:
patent: 4747316 (1988-05-01), Rabinovich
patent: 4783108 (1988-11-01), Fukuyama et al.
patent: 5406856 (1995-04-01), Kuhn

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