# US 8,783,488 B2 · Fluid reservoir > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,783,488 B2 - Document ID: US8783488B2 - Status: Granted - Kind: B2 - Application number: 13/383,355 - Filed: 2010-06-07 - Published: 2012-07-26 - Granted: 2014-07-22 - Earliest claimed: 2009-07-11 - Assignees: Thinxxs Microtechnology AG - Applicants: Lutz Weber - Inventors: Lutz Weber - Web page: https://patentgrep.com/patent/US8783488B2 ## CPC - B65D 81/268: {the absorber being enclosed in a small pack, e.g. bag, included in the package} - B01L 3/502707: {characterised by the manufacture of the container or its components} - B01L 3/52: {Containers specially adapted for storing or dispensing a reagent (B01L3/02 takes precedence; storing or dispensing test elements G01N33/4875; automated reagent dispensing G01N35/1002)} - B65D 75/36: one sheet or blank being recessed and the other formed of relatively stiff flat sheet material, e.g. blister packages {, the recess or recesses being preformed (B65D73/0057, B65D73/0092 take precedence)} - B65D 81/266: {for absorbing gases, e.g. oxygen absorbers or desiccants (B65D51/244, B65D51/30 take precedence)} - B01L 2200/0684: Venting, avoiding backpressure, avoid gas bubbles - B01L 2200/16: Reagents, handling or storing thereof - B01L 2300/0867: Multiple inlets and one sample wells, e.g. mixing, dilution - B01L 2400/0481: squeezing of channels or chambers - B01L 2400/0683: mechanically breaking a wall or membrane within a channel or chamber - B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES - B01L: CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE ## Abstract The invention relates to a fluid reservoir, in particular a fluid reservoir to be integrated into a miniaturized flow cell, comprising a reservoir space, which is enclosed by two bodies (6,7) that lie against each other in a fluid-tight manner. According to the invention, in addition to a stored liquid (9), a solid filling body (12) that fills the remaining reservoir space is arranged in the reservoir space. A part of the reservoir space filled by the stored liquid is preferably bounded predominately by one of the two bodies (6,7) and the solid filling body (12). ## Claims ### Claim 1 A fluid reservoir in a miniaturized flow cell, comprising: two bodies, one of the bodies having an indentation, the bodies being arranged to rest against each other in a fluid-tight manner so as to enclose a reservoir space in the indentation by covering the indentation in the one body with the other of the bodies; and, a solid filling body arranged in the reservoir space, in addition to a stored liquid, so that the solid filling body fills out a remaining capacity of the reservoir space not occupied by the liquid, and prevents formation of a residual air cushion caused by a curved liquid meniscus when covering the indentation with the other of the bodies, the solid filling body being a separate element from the two bodies. ### Claim 2 (depends on 1) The fluid reservoir according to claim 1, wherein a portion of the reservoir space filled out by the stored liquid is predominately delimited by one of the two bodies and the solid filling body. ### Claim 3 (depends on 1) The fluid reservoir according to claim 1, wherein the two bodies are connected to each other. ### Claim 4 (depends on 3) The fluid reservoir according to claim 3, wherein the two bodies are welded and/or glued together. ### Claim 5 (depends on 1) The fluid reservoir according to claim 1, wherein the two bodies rest against each other in a fluid-tight manner with plane surfaces, and the filling body has a surface that is flush with the plane surfaces. ### Claim 6 (depends on 1) The fluid reservoir according to claim 1, wherein at least one of the two bodies is formed by a foil. ### Claim 7 (depends on 6) The fluid reservoir according to claim 6, wherein the foil has a deformable bulge that forms the reservoir space. ### Claim 8 (depends on 1) The fluid reservoir according to claim 1, wherein the filling body is connected to one of the two bodies, and protrudes from the one body into the indentation forming the reservoir space. ### Claim 9 (depends on 1) The fluid reservoir according to claim 1, wherein a volume of a portion of the reservoir space filled out by the stored liquid is small in relation to a total volume of the reservoir space. ### Claim 10 (depends on 7) The fluid reservoir according to claim 7, wherein the filling body has a surface adapted to a die for deforming the bulge for pressing out the stored liquid. ### Claim 11 (depends on 7) The fluid reservoir according to claim 7, wherein the filling body forms a tool for producing an outlet opening, wherein the tool can be actuated by deforming the bulge. ### Claim 12 (depends on 11) The fluid reservoir according to claim 11, wherein the filling body comprises a mandrel and/or forms a slide. ### Claim 13 (depends on 1) The fluid reservoir according to claim 1, wherein the filling body is a body which melts at room temperature. ### Claim 14 (depends on 1) The fluid reservoir according to claim 1, wherein the filling body interacts with the liquid. ### Claim 15 (depends on 1) The fluid reservoir according to claim 1, wherein the filling body has a hydrophilic surface. ### Claim 16 (depends on 1) The fluid reservoir according to claim 1, wherein the liquid is at least partially degassed prior to inclusion in the reservoir space. ### Claim 17 (depends on 1) The fluid reservoir according to claim 1, wherein the filling body is suitable for picking up residual air. ### Claim 18 (depends on 1) The fluid reservoir according to claim 1, wherein the filling body is constructed of several parts. ### Claim 19 (depends on 7) The fluid reservoir according to claim 7, wherein the reservoir space has a stepped attachment that is filled out by the filling body up to a border area. ### Claim 20 (depends on 1) The fluid reservoir according to claim 1, wherein the filling body has a breakthrough, channel or a slot for conducting the liquid to a reservoir outlet.