System and method for automatically adjusting an external ventricular drain
US11617870B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 2020 |
| Grant date | Apr 4, 2023 |
| Priority date | — |
| Expiry date | Jan 27, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2230/62
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A control system and method for automatically adjusting the height of an external ventricular drain from a patient. The height of a pole supporting the bag into which the fluid is drained can be varied, increased or decreased, as driven by a motor. A drip chamber and collection bag that receive the fluid from the patient are attached to the height variable pole. An external fluid pressure tube is coupled to the patient at one end and to a pressure sensor at the other. The pressure sensor is coupled to the height variable pole. The system includes a feedback loop that adjusts the height of the external ventricular drain (EVD) to match the height of the patient's head. As the patient's head moves up or down, the variable height pole moves up and down a corresponding distance to maintain the patient's intracranial or intraspinal pressure, and therefore the cerebrospinal fluid (CSF) drainage rate, at a preset value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.