Dialysis apparatus for purifying fluid substances
OwnerPaul-Johny Johanssoninventor
Life of this patent
Estimating the term…
Abstract
A dialysis apparatus for purifying a fluid substance, particularly blood, containing contaminants which are diffused through semi-permeable diaphragms into a purification liquid. The apparatus comprises first plates having planar surfaces respectively disposed between opposing second plates provided with bosses on the surfaces facing the planar surfaces of the first plates. A plurality of these plates is alternately assembled into a stack with a diaphragm arranged between the opposite surfaces of the first and second plates. Portions of the clamped diaphragm are forced between the bosses of the second plates a predetermined distance to define two channels for the circulation of the two fluids.
Claims14
A dialysis apparatus embodying interleaved plates and flexible semi-permeable diaphragms for purifying a fluid, preferably blood, which contains contaminants that are caused to diffuse out through the semi-permeable diaphragms into a purification fluid, to remove the contaminating substances, said apparatus comprising:
- at least one first type plate element (1) with at least one planar work surface (2);
- at least one second type plate element (11) with an interrupted non-planar work surface formed by a plurality of upstanding bosses (13) to collectively help define at least one passage system (12) relative to said second plate element work surface;
- said first plate element work surface extending coextensively with and fully across said passage system;
- a relatively flexible semi-permeable diaphragm (25) having a medial portion thereof positioned to lie between and to sealingly separate the respective plate element work surfaces (2, 13) from one another;
- said diaphragm (25) being sandwiched and held against the planar work surface (2) of said first plate element (1) by the bosses (13) of said second plate element (11);
- said diaphragm disposed so as to form and define first fluid-flow passages (26) between said diaphragm (25) and planar work surface (2), and to form second fluid-flow passages (27) between said diaphragm and said bossed work surfaces (13);
- said first passages (26) adapted to convey one of the fluids, and said second passages (27) adapted to convey the other of said fluids;
- and
- wherein the first plate element (1) is somewhat smaller peripherally than said second plate element (11), and the latter is provided with transversely extending peripheral edge flanges (24) defining a generally recessed area within said peripheral edge flanges (24) corresponding essentially to the area of said first plate element (1) for receiving a membrane-covered first plate element (1) therein, and for facilitating proper orienting and securing said first plate element (1) in relation to said second plate element (11).
A dialysis apparatus embodying interleaved plates with flexible semi-permeable diaphragm means interposed between opposed faces of said interleaved plates, for purifying a contaminated fluid substance, such as blood, whereby the contaminants are diffusible through the semi-permeable diaphragm means into a purifying fluid, said apparatus comprising in combination:
- a. first and second sets of different types of generally planar flow plate elements disposed in clamped parallel relation to one another, and including
- 1. at least one plate element of a first type;
- 2. at least one pair of second type plate elements;
- b. said first type plate element being interleaved in slightly spaced apart relation and peripherally sealed by said diaphragm means relative to said second type plate elements interposed therebetween;
- c. said different types of flow plates having operatively engageable cooperative surface means to form therebetween on opposite sides of said first type plate element an interrupted flow passage system in at least generally medial portions thereof;
- d. said diaphragm means including a diaphragm member having at least medial portions which are deformable to a predeterminable extent and disposed so as to form and define between respective of said cooperative surface means within said flow passage system both first and second fluid-flow passages through which passages said fluid to be purified and said purification fluid are separately conveyable;
- e. said interleaved plate elements each having separate sets of intercommunicating fluid passages which also intercommunicate with and form part of said interrupted flow passage system of paragraph (c);
- said separate sets of intercommunicating flow passages adapted to convey into and out of said apparatus the respective fluid to be purified and the purification fluid, in a non-intermingling character;
- f. said first type flow plate element being of an overall lesser size than said second type flow plate elements;
- and
- g. said second type flow plate elements having elongated marginal boss means projecting transversely a limited extent and positioned so as to orient and form recessed planar pocket means for receiving said first type flow plate therein in fluid sealed relation by said membrane means and for facilitating correct interleaved parallel and predetermined relative relationship of said flow plate elements.
Dependencies are inferred from the claim text.