SU86228A1 - Functional and cosmetic prosthesis for leg humes - Google Patents

Description

Known prostheses with active flexion of the elbow and fingers with pronation and supination of the hand. However, they do not have the kinematic similarity of a living hand and use only the muscular resources of a disabled person to an insignificant degree.

In the proposed prosthesis, these deficiencies are eliminated by the fact that in the kinematically, the active functions of the prosthesis are divided into groups in relation to planes in which their movement coincides along the movements of the natural arm, and in accordance with this subdivision, muscle in the same directions, and therefore easily automating the control of the prosthesis.

FIG. 1 is a schematic view of the prosthesis, front view; pas figs. 2 - side view; in fig. 3, 4, 5, 6, 7, 8, 9 and 10 - s. schemes of control elements: prosthesis; pas figs. 11 - brush view.

The prosthetic arm (Fig. 1) is attached to the body of the disabled person with a splint chest waist /, on which the visor of the upper arm 2 is rigidly fixed. sagittal plane, and the other axis 4. serving to pull the shoulder forward, located in the frontal plane and inclined iodine angle of 45 ° to the sagittal plane. On a biaxial shcharpire fixed arm 5 of the shoulder, the upper and lower halves of which are connected by a bearing 6, allowing rotation of the shoulder. The lower half of the humeral lever 5 is hinged to the forearm 7 lever, carrying the hinge 8 at its lower end, providing palmar flexion and supronational movements for the wrist 9. .9 is equipped with movable (in phalanxes) fingers interlocked in pairs: the second with the third and the fourth with the fifth to provide a tight girth of the object. Axis of fixed-igarnir first

No. 86228- 2 fingers set at an angle of 30 ° to the plane of the palm. The prosthesis is equipped with locks for the elbow and fingers and for the shoulder in the propirovanny position. To control the prosthesis, eight tons of grams are used, partially enclosed in spiral shells and actuated by body movements. Th 10 hectares (Fig. 3) to move the shoulder to the side go from the splint harnessed belt to the lower half of the shoulder. It is driven by the trunk of the trunk in the direction of a healthy arm. A ha // (fig. 4) for moving the shoulder forward comes from the points b of the splinted harnessed body with the connection of the ends of the cables at the point a. It is activated by rotation of the body, and to the right (during the amputation of the left hand). T he 12 (fig. 5) to take the shoulder back, goes from the upper half of the shoulder through the rollers and to the point l of the hip suit, located near the spine; acts as a rotation of the body to the left. Th ha 13 (fig. 6) for supining the shoulder, goes from the lower bearing ring 6 to the point in the upper arm. Acts lifting padplech stump up. Th 14 (fig. 7) for the palm rest of the hand goes from the radial hinge ring to the point e of the chest belt. Acts by the movement of the chest increased amplitude. Th 15 (Fig. 8) for supining the brush goes from the ray of the ray-hinge through the roller d to the point g of the lower edge of the upper arm. Acts by moving the lower corner of the scapula stump from the spine to the shoulder. The ha 16 (fig. 9) for pronation of the hand goes from the ray of the ray-hinge to the point z of the lower edge and extends. Acts by moving the lower corner of the scapula to the spine. Th 17 (fig. 10) for bending fingers of a hand goes from blocked fingers (fig. 11) through a roller oic to a point h above the shoulder girdle. Operates from the movement of the upper angle of the scapula's blade forward.

Subject invention

1. Functional-cosmetic prosthesis of the arm when the shoulder is worn out, consisting of pivotally connected hands with movable fingers, forearm and shoulders, and equipped for inclining the prosthesis to the body of a disabled person with a half-arm, and for controlling the prosthesis eight, In order to give the active functions of the prosthesis the most complete coincidence with the movements of the living arm and in order to automate the mastery of the prosthesis control, the shoulder hinge in the prosthesis is biaxial, with the axis p inclined in the frontal plane d 45 °, and for controlling the selected group protezo.m mpnts operating under the same movements of the living arms.

2. The form of the prosthesis according to n. 1, that is, in order to ensure a tight girth of the object with the fingers, the latter are blocked in pairs: the second with the third and fourth with.

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