Weight activated brake knee with manual lock (16 pages)
Summary of Contents for ST&G 1322 AP
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Instructions for 1322 AP / AL Polycentric Pneumatic 4 Bar Knee ST&G USA Corp. Phone: (714) 524-0663 2691 Saturn St. Fax: (714) 364-8113 Brea, CA 92821 www.stngco.com...
1. Description and purpose These instructions are for use by the practitioner. The 1322 AP / AL knee is to be used exclusively as part of a lower limb prosthesis. Recommended for amputees k2 to K3. Weight limit for a user is up to 125kg / 275lbs ...
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2. Construction Principal Parts Frame Aluminum Alloy, Brass, Stainless Steel, Steel Knee Aluminum Alloy, Stainless Steel Knee control Various materials principally Aluminum Alloy Stainless Steel, Poly Urethane, Pneumatic Cylinder Fig. 1 (a) Posterior View (b) Anterior View c) Lateral View of Knee Unit...
3. Function Adjustable spring extension assist Independently adjustable pneumatic flexion and extension resistances. Pyramid and Knee Disarticulation mounting options. • Built-in bearings which allow for ultra smooth walking movement • Frame construction made of superlight aluminum alloy •...
5. Maintenance Maintenance must be carried out by qualified personnel. Bi-Annual inspection is recommended. Check for visual defects that may affect proper function. A loaner system is available should servicing be required. The wearer should be advised: Any changes in performance of this device must be reported to the Clinician / Practitioner.
7. Alignment and Set-Up Users be aware of potential finger trap hazard Fig. 2b Fig. 2a Fig. 2c...
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BENCH ALIGNMENT: Note: 4-bar knees inherently are very stable due to the geometry built into each design. This is commonly referred to as the Instant Knee Center (IKC). The IKC point when doing bench alignment, will fall behind the traditional TKA line that we will reference.
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8 Knee Adjustment 8.1 Flexion / Extension Adjustment Swing Phase Pneumatic setting is pre-set from the factory. Extension or flexion adjustment is only needed if the clinician finds the wearer shows a need for higher or lower walking speeds. Swing Phase Control Adjustment: It is advisable to adjust flexion before extension for optimum walking symmetry.
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8.2 Extension Assist Adjustment Loosen set screw prior to any adjustment to Extension Assist! Tighten back up after adjustment is made! Use 6mm driver and turn clockwise to increase extension assist. Turn screw anti- clockwise to reduce the extension assist. After inserting pylon, apply Loctite 242 to pinch bolt and torque 12Nm using 5mm driver.
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9 Maintenance of Knee Unit 9.1 Servicing Flexion and Extension Stop Bumpers Use a small screw driver to pick out the rubber bumpers on the back of knee head. Apply glue to new ones and insert back into knee head. Use a small screw driver to pick out the extension stop rubber bumper on knee level adjusting...
10 Warranty Warranted for 2 years from the date of invoice by ST&G. The user should be aware that changes or modifications not approved will void the warranty. 11 Liability The manufacturer recommends using the device only under the specified conditions and for the intended purposes.
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ST&G USA Corporation www.stngco.com e-mail: info@stngco.com 2691 Saturn Street, Brea, CA 92821, USA Tel: 1-714-524-0663 Fax: 1-714-364-8113 1322IFU Rev. B (01-16-18)