Patent ID: 8992456
Filing Date: 2015-03-31
Classification: A61B,A61M

Abstract:
1. A device for removing cerebrospinal fluid (CSF) from a CSF space within a patient's body by monitoring signals from a CSF space pressure sensor, an outlet pressure sensor and a CSF fluid flow rate sensor, the device comprising: a pump having a pump inlet and a pump outlet; an inlet tube having a first end coupled to the pump inlet and a second end in fluid communication with the CSF space within the patient's body; an antechamber defined on the pump, the antechamber being in fluid communication with the pump inlet, the antechamber positioned to collect a sample of CSF fluid traveling into the pump from the tube; a needle stop disposed in the antechamber; device control circuitry disposed on the pump; a CSF space pressure input disposed on the device control circuitry configured to acquire a CSF space pressure input signal from the CSF space pressure sensor, wherein the CSF space pressure input signal is representative of pressure in the CSF space; an outlet pressure sensor input disposed on the device control circuitry operable to acquire an outlet pressure input signal from the outlet pressure sensor; a CSF fluid flow rate input disposed on the device control circuitry operable to acquire a CSF fluid flow rate input signal from the CSF fluid flow rate sensor; and a processor disposed on the device control circuitry configured to receive and process the CSF space pressure input signal, the outlet pressure signal, and the CSF fluid flow rate signal; wherein the device control circuitry is selectively programmable in a first mode to instruct the pump to extract CSF fluid from the CSF space in response to detecting a predetermined level of the CSF space pressure input signal; wherein the device control circuitry is selectively programmable in a second mode to instruct the pump to extract CSF fluid from the CSF space in response to detecting a predetermined level of the outlet pressure signal; and wherein the device control circuitry is selectively programmable in a third mode to instruct the pump to extract CSF fluid from the CSF space in response to detecting a predetermined level of the CSF fluid flow rate signal.