Agitating – With weighing
Patent
1996-04-25
1997-04-29
Cooley, Charles E.
Agitating
With weighing
366208, B01F 1100
Patent
active
056241852
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
This invention relates to a device which can be used to effect mixing of liquids.
SUMMARY OF THE INVENTION
A particular application of the invention relates to a device which can be utilised during blood collection to facilitate the mixing of the blood being collected with an anticoagulant in such a way that the blood components to not become segregated. It should be appreciated however, that the invention need not be limited in its scope to such an application.
Accordingly, the invention resides in a mixing means comprising a central support, a transverse member extending to each side of the central support, a platform supported from the transverse member to be pivotable about a substantially horizontal first pivot axis and about a second pivot axis which is transverse to the first pivot axis, a drive motor supported from the transverse member having an upright drive shaft which is coupled to the platform whereby rotation of the drive shaft causes joint pivotal movement of the platform about the first and second pivot axes and whereby the spacing between the drive shaft and platform is not affected by the loading on the platform, wherein the loading on the central support by the transverse member is substantially balanced, a portion of the transverse member to each side of the centeral portion being resiliently deflectable in proportion to the weight of the contents of the platform, a measuring means provided to measure the degree of deflection of the portions to provide an indication of the weight and/or volume of the contents of the platform.
According to a preferred feature of the invention said platform is configured to receive a receptacle in the form of a closed bag formed of a flexible material. Preferably the platform is formed as a tray having upstanding sides.
The invention will be more fully understood in the light of the following description of one specific embodiment. The description is made with reference to the accompanying drawings of which:
BRIEF DESCRIPTION OF THE FIGURES OF THE DRAWING
FIG. 1 is an isometric view of a blood collection monitoring apparatus according to the embodiment;
FIG. 2 is a sectional side elevation of the base portion of the embodiment;
FIG. 3 is a sectional end elevation of the base according to the embodiment; and
FIG. 4 is an isometric view of the tray support of the embodiment.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The embodiment is directed towards a device which can be used for the collection of blood and monitoring such collection.
According to a further preferred feature of invention the drive means comprises a substantially vertical upright drive shaft having a laterally extending support element, said platform being provided with a downwardly depending member pivotally engagable with the support element whereby rotation of the drive shaft causes said joint pivotal movement of the platform.
According to the preferred feature of the invention the interconnection between the support and the base incorporate a weight sensing and measuring means.
The embodiment comprises a housing 10 having a lower portion 11 which accommodates a support tray 12 and a drive means for causing reciprocation of the tray. The housing further comprises an upper portion 13 which extends upwardly from one side of the base 11 and accommodates an appropriate control switch 14, a display 15, and flow line support 16. Both the lower and upper portion 11 and 13 accommodate the control circuitry for the device.
The lower portion 11 is essentially cubic in configuration and is provided with an open upper face 17. The support tray 12 is configured such that it is received within the upper face 17 and is supported to be able to be caused to pivot about two substantially horizontal perpendicular axes in the open face 17. The tray 12 is formed with an upper face which is recessed in a manner such that it will support a blood collection bag and will prevent substantial movement of the bag on the tray as a result of the cyclic tilting action of the tra
REFERENCES:
patent: 1602196 (1926-10-01), Iverson et al.
patent: 2552188 (1951-05-01), Krause et al.
patent: 2757375 (1956-07-01), Rieutord et al.
patent: 3607478 (1971-09-01), Henninges et al.
patent: 3698494 (1972-10-01), Gaudin
patent: 4026531 (1977-05-01), Luchsinger et al.
patent: 4125335 (1978-11-01), Blume et al.
Derwent Abstracts Accession No. 22532C/13, Class J02, JP,A, 5020626 (Mochida Pharm. KK) 14 Feb. 1978.
Cooley Charles E.
Max-Medical Pty Ltd.
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