| 摘要 |
A prosthetic knee provides security and stability, particularly to low activity users, household and limited community ambulators, single and/or slow speed ambulators, and those with little voluntary control, while also balancing walking (dynamic) performance for low activity users. The prosthetic knee includes a housing, parallel anterior links, a posterior link, and a chassis. The geometry of the links and their relationship to one another allow for low voluntary control, shortening of mid-swing, which reduces stumbling risk, and geometric stability in stance. The anterior links are particularly oriented, sized and located to provide for stability. The anterior links both extend above the posterior link and substantially below the posterior link. The prosthetic knee includes a friction adjustment mechanism, a stability adjustment mechanism, and an adjustable extension assist mechanism. |
| 主权项 |
1. A prosthetic knee, comprising:
a pair of anterior links; a posterior link; a housing connecting the pair of anterior links and the posterior link, the anterior links connected to the housing at first upper pivot points, and the posterior link connected to the housing at a second upper pivot point; a chassis connecting the pair of anterior links and the posterior link, the anterior links connected to the chassis at first lower pivot points, and the posterior link connected to the chassis at a second lower pivot point; a stability adjustment mechanism accessible from a front side of the housing, the stability adjustment mechanism having a stop element extending from a rear side of the housing and engageable with the posterior link between the second upper and lower pivot points, and a friction adjustment screw accessible from the front side of the housing and connected to the stop element; wherein the stop element defines a rounded tip defining a consistent and smooth surface contact for the posterior link to strike, thereby easing use of the prosthetic knee as it enters maximum extension and reducing any noise. |
