1
Wilfried Schael: Blood flow monitoring and control apparatus. Dr Eduard Fresenius Chemisch Pharmazeutische Industrie KG Apparatebau KG, W G Fasse, W W Roberts, November 4, 1980: US04231366 (111 worldwide citation)

The present blood flow monitoring and control apparatus is especially use in connection with the so-called single needle technique, for example, for treatments such as dialysis, perfusion, or diafiltration. The blood pressure control is accomplished by a measuring chamber including a pressure equali ...


2
Wilfried Schael: Peritoneal dialysis apparatus. Dr Eduard Fresenius Chemisch pharmazeutische Industrie KG Apparatebau KG, W G Fasse, D F Gould, December 23, 1980: US04240408 (94 worldwide citation)

In peritoneal dialysis apparatus, flushing liquid is pumped into a supply vessel (4) which is then emptied into the body cavity through a valve (5) and a catheter (6). The supply vessel is then refilled while the cavity is drained back through the catheter into a receptacle (11) of the same weight a ...


3
Wilfried Schael: Apparatus for fluid balancing under sterile conditions. Dr Eduard Fresenius Chemisch pharmazeutische Industrie KG Apparatebau KG, W G Fasse, D F Gould, June 30, 1981: US04275726 (62 worldwide citation)

Apparatus for removing fluid from and supplying fluid to the human body in substantially equal quantities includes a double tube pump (1), a measuring chamber (2), and a supply container (4), the pump being arranged to deliver fluid from the supply container to the body by a line (13) while removing ...


4
Johannes G Schindler, Wilfried Schal: Electrochemical measuring electrode. Dr Eduard Fresenius Chemisch pharmazeutische Industrie KG Apparatebau KG, Omri M Behr, Martin Sachs, March 17, 1981: US04256561 (41 worldwide citation)

An electrochemical measuring electrode has an ion-selective membrane and direct potential take off via an electron conductor. A diffusion barrier layer is provided between the membrane and the electron conductor for the purpose of reducing or eliminating the sensitivity to faults which can be caused ...


5
Bernd Mathieu: Separator for an ultracentrifuge. Dr Eduard Fresenius Chemisch pharmazeutische Industrie KG Apparatebau KG, Andrus Sceales Starke & Sawall, May 18, 1982: US04330080 (38 worldwide citation)

A separator shaped like a plate, for an ultracentrifuge, comprises centrally arranged inlet and outlet nipples (5, 6, 7, 8) opening axially outwardly. A ring channel (11) is arranged near the circumference of the plate (1) and extends along or near substantially the entire circumference. One end, th ...


6
Wilfried Schael: Apparatus for periodically rinsing body cavities, particularly the abdominal cavity. Dr Eduard Fresenius Chemisch pharmazeutische Industrie KG Apparatebau KG, W G Fasse, D F Gould, February 24, 1981: US04252115 (30 worldwide citation)

Apparatus for rinsing body cavities includes a double tube pump (1) for simultaneously pumping fluid into a storage vessel (4) for subsequent feed through a catheter (K) and pumping discharged fluid from a measuring vessel (9) at the same rate, so that surplus fluid with the discharge can be measure ...


7
Horst Ewert, Wilfried Schael: Indicator and limit value alarm device. Dr Eduard Fresenius Chemisch pharmazeutische Industrie KG Apparatebau KG, W G Fasse, D F Gould, February 17, 1981: US04251769 (27 worldwide citation)

The present electronic indicator or display device is equipped with adjustable upper and/or lower limit value markers to provide a respective alarm if such limit values are exceeded or not reached. The display itself comprises an electronic circuit and optical display elements such as light emitting ...


8
Wilfried Schael, Jan Erik Sigdell, Gerd E Krick: Apparatus for the mass transfer between two media. Dr Eduard Fresenius Chemisch Pharmazeutische Industrie KG Apparatebau KG, W G Fasse, D F Gould, February 27, 1979: US04141835 (27 worldwide citation)

The present mass transfer apparatus between two media is especially adapted to blood dialysis. To assure an undisturbed flow of the blood through the dialyser and to avoid coagulation all flow channels are shaped to avoid dead corners and choking zones so that the blood is prevented from forming wak ...


9
Jan Erik Sigdell: Hollow fiber dialyser. Dr Eduard Fresenius Chemisch pharmazeutische Industrie KG Apparatebau KG, W G Fasse, D F Gould, October 30, 1979: US04172794 (25 worldwide citation)

A hollow fiber dialyser comprises a webbing of hollow fibers. A loose warp hread at each end of a webbing wound on a core, acts as a wick barrier to prevent sealant from leaking into the interstices between the hollow fibers. A tight warp thread nearest the open ends of the fibers pinches off the fr ...


10
Johannes G Schindler, Wilfried Schal: Ion selective sensor and method of making such sensor. Dr Eduard Fresenius Chemisch pharmazeutische Industrie KG Apparatebau KG, Omri M Behr, December 30, 1980: US04242191 (13 worldwide citation)

An ion-sensitive sensor has an electron-conducting electrode and a membrane for determining the selectivity which is arranged to come into contact with a medium to be analyzed. The membrane is applied to an ion-conducting layer of glass which is in connection with the electron-conducting electrode v ...