US 12,350,456 B2
Automatic in vitro diagnostic medical device for intraventricular drainage
Joshua Medow, Verona, WI (US); Yue Yang Mo, New Berlin, WI (US); Saketh Challa, Sharon, MA (US); Amber Rollette, Beloit, WI (US); Andrew Budde, Hartland, WI (US); and Ronnie Alramahi, Madison, WI (US)
Assigned to Wisconsin Alumni Research Foundation, Madison, WI (US)
Filed by Wisconsin Alumni Research Foundation, Madison, WI (US)
Filed on Oct. 15, 2021, as Appl. No. 17/502,286.
Prior Publication US 2023/0123678 A1, Apr. 20, 2023
Int. Cl. A61M 27/00 (2006.01); A61M 39/28 (2006.01)
CPC A61M 27/006 (2013.01) [A61M 39/28 (2013.01); A61M 2027/004 (2013.01); A61M 2205/3344 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A cerebrospinal fluid (CSF) drainage system used to treat an abnormal accumulation of CSF in a brain or spinal cord of a patient, comprising:
a medical tubing connectable to a catheter implanted within the brain or spinal cord of the patient with a proximal portion of the catheter within the brain or spinal cord opposite a distal portion of the catheter attachable to the medical tubing and configured to divert CSF out of the brain or spinal cord to the medical tubing;
a pressure sensor communicating with the medical tubing and configured to produce a pressure signal representing an intracranial pressure;
a flow controller communicating with the medical tubing to conduct excess CSF through the medical tubing in a first state and to prevent the excess CSF from passing through the medical tubing in a second state;
an elastic balloon positioned between the brain or spinal cord of the patient and the flow controller to accumulate CSF by elastically changing volume; and
a driver control circuit communicating with the pressure sensor and the flow controller and operating to control the flow of excess CSF from the elastic balloon as a continuous function of the pressure signal within a pressure range.