In the case of a grid plate 1 based on lead-coated copper metal mesh 2 having a lead current-carrying tab 8, which is cast directly thereon, the region of the mesh grid which is covered by the plastic extrusion coating 3 is pressed flat around the casting-on point, in order to make it possible to close the mould halves for casting of the lead tab via the grid, and to prevent lead flowing into the ...

The disposable flexible pouch for collecting and filtering blood has two inner chambers separated from each other by a filtering screen (11), a first chamber being connected to the outside by an outlet opening for the filtered blood and a second chamber being connected to the outside by an inlet opening for the blood to be processed. The pouch is formed from two superposed walls (1, 2) made of a f...

An infusion catheter having a catheter shaft with a distal end, an inflatable and contractible balloon provided adjacent the distal end but spaced therefrom, a blood passage with two openings for passing blood through the balloon, and first and second lumens. The first lumen communicating with the balloon to inflate and contract the balloon, and the second lumen including a medicine discharge port...

A filter medium having high stiffness is provided. The filter is a nonwoven web of conjugate fibers which has a Frazier permeability above 200 CFM, an NaCl efficiency above 75 percent, a Gurley Stiffness above 700 mg, and a SEP value of above 80. The conjugate fibers may be polyolefin, more particularly polypropylene and polyethylene in a side-by-side configuration. The medium may be made into a f...

The expansion anchor comprises a shaft (1) which exhibits, at its rear end, means for fastening an object and, at its front end, a cross-sectionally reduced portion (3) with an adjoining expansion cone (4), and it further comprises an expansion sleeve (5) which is pushed over the said portion and has longitudinal slits (6) and locking elements (7) which project beyond the diameter of the expansion...

Aqueous solutions, which are contaminated by hydrogen sulphide, hydrogen cyanide and ammonia, are adjusted to a pH of about 3 or less directly after their formation to remove the contaminants and are treated in a stripping column with an inert gas. Thereupon, the pH of the solution is increased to about 10 or more and it is treated again in a second stripping column with an inert gas.