Devices and monitoring systems for locating a blood vessel
US9114226B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2009 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | Aug 15, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M29/02
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Devices detect and assist in the avoidance of blood vessels during a surgical procedure, to avoid rupturing these blood vessels. Devices may be any penetration sensor device, such as a dilator sensor device, a hollow needle sensor device, or a trocar sensor device, which penetrates the skin and subcutaneous layers to reach a target location inside the body. The penetration sensor device includes a sensor probe which can make optical measurements to determine various parameters of the tissue at the tip of the sensor probe. These parameters may include an optical signal level returned from tissue contacting the tip of the sensor probe, an oxygen saturation level of the tissue, a total hemoglobin concentration, a blood flow, and a pulse. Based on these parameters, the presence or absence of a blood vessel at the tip of the penetration sensor device can be determined while the device travels towards the target location for surgery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.