Prosthetic joint

摘要

A prosthesis joint including a base, a coupling element for attachment to a body part or a prosthesis section, which is attached to the base, and an attachment device for attachment to a prosthesis device, which is coupled to the base and pivotable around at least one axis. A locking device is coupled to the coupling element and operates to selectively block and enable movement of the attachment device with respect to the base providing locked and unlocked positions, respectively. A retention element is carried by at least one of the base and coupling elements and is elastically pre-stressed against the attachment device to provide a retention force for the attachment device so as to resist undesired pivoting movement.

主权项

1. A prosthesis joint comprising:
a base; a coupling element coupled to the base and configured for attaching the base to a body part or another prosthesis component attached to the body part; an attachment device attached to the base and configured for attaching the base to a prosthesis device, the attachment device pivotable around at least one axis, the attachment device including a gear element having a circumference and a plurality of recesses formed at one location around the circumference of the gear element and a plurality of indentations formed at another location around the circumference of the gear element; a locking device coupled to the coupling element and operative to selectively block and enable pivoting movement of the attachment device with respect to the base, providing locked and unlocked positions, respectively, the locking device including locking guides that engage the gear element recesses in the locked position creating stop positions and disengage from the gear element recesses in the unlocked position; and a retention element coupled to at least one of the base and coupling element, the retention element elastically pre-stressed against the gear element to provide a retention force for the attachment device so as to resist pivoting movement, the retention device including at least one elastic cord or rod that engages at least one of the plurality of indentations, gripping the gear element, wherein the indentations are aligned with the recesses, such that the attachment device resists pivoting movement when the locking device is unlocked at the stop positions; and wherein the pre-stressing of the retention element is sufficient to prevent pivoting of the attachment device by the force of gravity when the locking device is in the unlocked position.