Remotely activated piezoelectric pump for delivery of biological agents to the intervertebral disc and spine
US8827986B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2009 |
| Grant date | Sep 9, 2014 |
| Priority date | — |
| Expiry date | Nov 30, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2210/1003
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A remotely activated piezoelectric pump for delivery of biological agents to the intervertebral disc and spine in order to achieve spinal fusion. A spinal pump is implanted on the vertebrae of a patient and a spinal cage is inserted in between two adjacent vertebrae after removal of the vertebrae disc. A piezoelectric motor drives the pump and pushes osteogenetic agent through the spinal cage and into a sponge disposed within the cage. The pump is charged by an external removable induction belt worn by the patient. Delivery duration and delivery frequency may be changed before implantation of the spine pump according to the specific needs of the patient. The current device employs a mathematical model that enables the regulation as well as attenuation of the bone fusion process by extending and generalizing the model to enhance and optimize the delivery of osteogenetic agent in a regulated manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.