# US 10,441,698 B2 · Substitution fluid pump integrated in a dialysis machine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,441,698 B2 - Document ID: US10441698B2 - Status: Granted - Kind: B2 - Application number: 14/734,695 - Filed: 2015-06-09 - Published: 2015-12-17 - Granted: 2019-10-15 - Earliest claimed: 2014-06-12 - Assignees: B. Braun Avitum AG - Applicants: B. Braun Avitum AG - Inventors: Henrik Wolff; Bjoern Broeker - Web page: https://patentgrep.com/patent/US10441698B2 ## CPC - A61M 1/1621: {Constructional aspects thereof (semi-permeable membranes for separation processes characterised by their properties B01D69/00; semi permeable membranes characterised by their material B01D71/00)} - A61M 1/16: with membranes - A61M 1/168: {Sterilisation or cleaning before or after use} - A61M 1/1682: {both machine and membrane module, i.e. also the module blood side} - A61M 1/3434: {with pre-dilution and post-dilution} - A61M 1/3465: {using dialysate as substitution fluid} - A61M 1/3601: {Extra-corporeal circuits in which the blood fluid passes more than once through the treatment unit} - A61M 1/3649: {using dialysate as priming or rinsing liquid} - A61M 2205/3337: Controlling, regulating pressure or flow by means of a valve by-passing a pump - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} ## Abstract A dialysis machine comprising internal fluidics, wherein the internal fluidics includes a dialysis fluid pump for pumping dialysis fluid from a dialysis fluid reservoir through a dialysis fluid feed line to a dialyzer and from the dialyzer through a dialysis fluid drain line to a waste reservoir, a substitution fluid pump for supplying dialysis fluid through a substitution fluid feed line as substitution fluid to an extracorporeal hose system including ports on the patient side and coupling means for connecting the extracorporeal hose system to the internal fluidics is disclosed. ## Claims ### Claim 1 A dialysis machine comprising internal fluidics, the internal fluidics including the following components: a dialysis fluid pump adapted to pump dialysis fluid from a dialysis fluid reservoir through a dialysis fluid feed line to a dialyzer and from the dialyzer through a dialysis fluid drain to a waste reservoir or to a waste line; a substitution fluid pump adapted to supply dialysis fluid through a substitution fluid feed line to an extracorporeal blood conduit system having patient-side ports; coupling means configured to connect the extracorporeal blood conduit system to the internal fluidics, the internal fluidics having a drain line comprising a first drain line and a second drain line running parallel to the first drain line; the internal fluidics further comprising a substitution fluid feed line comprising a first substitution fluid feed line and a second substitution fluid feed line running parallel to the first substitution fluid feed line; the coupling means comprising coupling elements formed on each of the first drain line, second drain line, first substitution fluid feed line and second substitution fluid feed line, each coupling element configured to connect to the extracorporeal blood conduit system. ### Claim 2 (depends on 1) The dialysis machine according to claim 1, wherein the drain line also leads to the dialysis fluid drain. ### Claim 3 (depends on 1) The dialysis machine according to claim 1, wherein the first drain line and the second drain line fluid-communicate via a shut-off valve. ### Claim 4 (depends on 1) The dialysis machine according to claim 1, wherein the substitution fluid feed line fluid-communicates with the drain line via a shut-off valve. ### Claim 5 (depends on 1) The dialysis machine according to claim 1, wherein an air separator is arranged in the drain line. ### Claim 6 (depends on 1) The dialysis machine according to claim 1, wherein the substitution fluid pump is arranged upstream of a branch to the coupling means, and wherein a control valve is arranged downstream of the branch for selectively controlling at least one of pre-dilution or post-dilution and is employed in each substitution fluid feed line. ### Claim 7 A dialysis machine comprising: a hollow casing including internal fluidics inside the hollow casing, the internal fluidics including the following components: a dialysis fluid pump adapted to pump dialysis fluid from a dialysis fluid reservoir through a feed line to a dialyzer and from the dialyzer through a dialysis fluid drain to a waste reservoir or to a waste line, a substitution fluid line branching off from the feed line for feeding dialysis fluid from the internal fluidics to an extracorporeal blood conduit system including patient-side ports, at least one first coupling means arranged on a side of the hollow casing of the dialysis machine and between the extracorporeal blood conduit system and the substitution fluid line, wherein the at least one first coupling means is in fluid communication with the substitution fluid line so as to couple the extracorporeal blood conduit system to the substitution fluid line, a drain line having a second coupling means, the second coupling means configured to further connect the extracorporeal blood conduit system to the internal fluidics, wherein the drain line leads from the second coupling means to the waste reservoir or to the waste line, the drain line configured to drain fluid from the extracorporeal blood conduit system, a substitution fluid pump adapted to supply the dialysis fluid through the substitution fluid line to the extracorporeal blood conduit system; a first cover for the at least one first coupling means, the first cover positionable in an open state to provide access to the at least one first coupling means to connect the internal fluidics to the extracorporeal blood conduit system, and a closed state for covering the at least one first coupling means; and a second cover for the second coupling means, the second cover positionable in an open state to provide access to the second coupling means to connect the internal fluidics to the extracorporeal blood conduit system, and a closed state for covering the second coupling means; wherein, when the first cover and the second cover are in their respective closed states, a sealed volume fluid-connection with the at least one first coupling means and the second coupling means of the drain line is formed, forming a short-circuit flow path through which the substitution fluid line is fluid-connected to the drain line. ### Claim 8 (depends on 7) The dialysis machine according to claim 7, wherein the drain line connects the extracorporeal blood conduit system to the waste reservoir. ### Claim 9 (depends on 7) The dialysis machine according to claim 7, wherein the cover in the closed state is in sealing contact with one casing side. ### Claim 10 (depends on 7) The dialysis machine according to claim 7, wherein the cover is a flap-type and is manually operable. ### Claim 11 (depends on 7) The dialysis machine according to claim 7, wherein the sealed volume surrounds the at least one first coupling means and the second coupling means of the drain line. ### Claim 12 (depends on 9) The dialysis machine according to claim 9, wherein the one casing side is a machine front face.