Ring-shaped cuff for measurement of blood pressure
US7427268B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2004 |
| Grant date | Sep 23, 2008 |
| Priority date | — |
| Expiry date | Aug 18, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/02233
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A closed blood pressure cuff including a ring-shaped inflatable bladder having an inner portion for making direct contact with a user's arm and an outer portion having a fixed circumference outside the inner portion. The bladder is formed of non-distensible material, preferably by joining a tubular starting element. The inner portion of the bladder is not constrained during inflation and thus can readily conform to a subject's limb, the outer portion accommodating an upper limit of arm circumference within the cuff. The cuff may include a stiffener attached to the outer portion of the bladder to automatically adjust the shape of the bladder during inflation. The stiffener may be in the form of a continuous layer or may comprise a plurality of axial ribs, allowing the cuff to be folded when not in use. The cuff may be generally cylindrical or may be tapered.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.