US 12,005,215 B2 · Flow reducer

Abstract

The application relates to a hydrocephalus valve for draining CSF from the ventricle systems of patients. The valve has a housing with a housing interior and at least one first passage for admission and/or discharge. The valve has at least one body provided in the housing interior. The body is designed to move in at least one direction. At least one adjusting unit is provided. The application aims to improve tried-and-tested existing valves. To achieve this, the adjusting unit is designed to adjust at least one drainage rate in the passage, and to allow the drainage rate to be adjusted between 1 ml per hour and 1000 ml per hour at a pressure at the hydrocephalus valve of 20 cm water column, in order to slow or accelerate, by means of this adjustment, a change in pressure in the ventricle system that results from the drainage.

Claims28

Dependent claims

A hydrocephalus valve for draining fluid from a ventricular system of a patient, comprising:

a casing (200) having a casing interior (201);
a passage (300) extending in a passage direction (302) for draining fluid,
a body (500, 506, 1152) which is arranged in the casing interior (201), wherein the body (500, 506, 1152) is movable in the passage direction;
an adjusting unit (700, 704, 706);
and
an adjustable gap (600) arranged around the body within the passage,
wherein the adjusting unit (700, 704, 706) is configured
to move the body along the passage direction (302) into a defined position,
in which the adjustable gap is permanently open, and thereby adjust a drainage rate in the passage between 1 ml per hour and 1000 ml per hour in order to slow or accelerate a change in pressure in the ventricular system resulting from the drainage, and
wherein the body remains in the defined position independently of the pressure in the ventricular system.

7 more elements

Dependencies are inferred from the claim text.

Flow reducer

Life of this patent

Flow reducer

Life of this patent

Abstract

Claims28