Measuring and testing – Sampler – sample handling – etc. – With constituent separation
Patent
1983-11-02
1985-12-24
Swisher, S. Clement
Measuring and testing
Sampler, sample handling, etc.
With constituent separation
7386444, 7386491, 422101, 422102, G01N 108
Patent
active
045598371
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This present invention relates to a disposable receiver for the collection, preservation, transportation and preparation of faeces for the parasitological examination.
The preparation of faeces for the parasitological examination, named concentration technics, differs largely from one laboratory to the other, according to the laboratory's conditions and conveniences. The most used concentration technics involve the following phases:
1. Collection of a sample of faeces which is transferred to the receiver - usually a little can or plastic or glass container - which is then taken to the laboratory;
2. Transference of a portion of faeces into a flask or cup containing water;
3. Dilution of the faeces in the water, through agitation;
4. Filtration of the diluted faeces through a gauze or a plastic or wire net; and
5. Spontaneous sedimentation of the filtered product in a cone-shaped cup, or by centrifugation in a test tube.
During each of the above phases, the material is handled openly, using several devices, mainly improvised or adapted ones. The various methods proposed for enrichment of the samples to be examined (Faust, Willis, Baermann, Kato, MIFC, Ritchie, Rugai, AMS III, and direct examination), did not bother in simplifying such handling of the samples, which causes the operation to be troublesome, fastidious and anti-hygienical.
SUMMARY OF THE INVENTION
It is one of the objects of the present invention, to provide a receiver operative to eliminate several inconveniences which appear during the faeces collection and concentration phases. This result is achieved through the inclusion, in only one receiver, of all the necessary devices for the collection and concentration, which will then take place in a closed receiver.
Another object of this invention is to provide a receiver which is also disposable, formed by a minimum number of components, which can be manufactured easily and at low costs.
The novel features which are considered as characteristic for the invention are set forth in particular in the appended claims. The invention itself, however, both as to its construction and its method of operation, together with additonal objects and advantages thereof, will be best understood from the following description of specific embodiments when read in connection with the accopanying drawing.
BRIEF DESCRIPTION OF THE DRAWING
FIG. 1 is a longitudinal section view of the receiver; and
FIG. 2 is a partial perspective view of the faeces collector stick.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The device for collection and concentration of faeces comprises a semi-flexible plastic receiver, indicated by a number 1 on the attached drawing; a cap with special characteristics is denoted by numberal 2, which is fastenable to the mouth of the receiver through a thread 4, and a collecting-filtering device 3.
The cap 2 is internally concavous and is perforated at its centre 5, where a spout 6 is projected externally, forming a funnel; the spout 6 is closed by a cap 7; in the whole perimeter of cap 2 there is an internal ring-shaped salience 8, where the collecting-filtering device 3 is fastened by pressure.
The collecting-filtering device is a stick 9, which widens at one of its edges to form the sieve 10, and on the other edge to form the collector 11.
The border 12 of the sieve 10 is fastened to the cap 2, by pressure, on the already mentioned internal salience 8. The sieve 10 has orifices, with adequate dimensions, and is reinforced to avoid excessive flexibility. The other edge of the stick widens to form a device to collect the adequate amount of faeces, as indicated at 11' in FIG. 2.
HANDLING INSTRUCTIONS
by the cap and pressing in its longitudinal direction the faecal matter; and close; centrifuge tube, or even another cup. The diluted and filtered faeces will then fall into the tube or cup. Such process can be speeded up by pressing the sides of the receiver; and throw away;
ADVANTAGES
way, the bad odour spread throughout the room by handling the faeces is
REFERENCES:
patent: 2835246 (1958-05-01), Boettger
patent: 3203576 (1965-08-01), Wout et al.
patent: 3518164 (1970-06-01), Andelin et al.
patent: 3811326 (1974-05-01), Sokol
patent: 4221225 (1980-09-01), Sloan
patent: 4300404 (1981-11-01), Mehl et al.
patent: 4357240 (1982-11-01), Mehra et al.
Striker Michael J.
Swisher S. Clement
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