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jaeco WREX Setup Instructions

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WREX

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Summary of Contents for jaeco WREX

  • Page 1 Setup Instructions WREX...
  • Page 2 WREX Mobile Arm Support The WREX was developed with an NIH grant. Special thanks to Tariq Rahman; PhD. Senior Research Engineer and Head (302) 651-6831 and Whitney Sample; Research Design Engineer (302) 651-6868, Pediatric Engineering Research Lab Department of Bio Medical Research A.I.

  • Page 3: Table Of Contents

    3-1: Select and Pre-fit Forearm Support 3-2: Attach Forearm Support to WREX Arm 3-3: Measure and Preset Humeral Elevating Links Section 4: Fitting and Adjustments with Client 4-1: Attaching the WREX Arm to the Wheelchair Mount 4-1: WREX Arm Attachment 4-2: Position WREX Shoulder Joint...

  • Page 4: Section 1: Parts Description

    Section Part Description...

  • Page 5: Mount Parts Description

    JAECO WREX Mount Parts Description MR-10 Mount Adapter Attachment Hole Moveable Jaw Locking Knob Jaw Locking Set Screw Arm Mount Shaft Base Clamp screw Alignment Pin Mount Screw Arm Clamp Reinforcement Washer 3 inch Arm MR-7 Mount Adapter Joint Pin...
  • Page 6 JAECO WREX Arm Parts Description Pitch Mount Shaft Elevator J-Link Pitch Pivot Elbow Pivot Pitch Pivot Cover Elbow J-Link Pitch Link Band Cradle Roll Pivot Forearm Pivot Lateral Stop Forearm Link Shoulder Link Slide Saddle WREX Level Band Spool Pivot...

  • Page 7: Section 2 Mount Attachment

    Section Mount Attachment...
  • Page 8 Mount Base Attachment The WREX can be attached to most common wheelchairs and mobility seating systems utilizing one of the three Mount Bases provided with the arm. These are the same attachment systems that are the basis of our JAECO Mount Relocator.

  • Page 9: 2-2: Mount Link Attachment

    Mount Link Attachment The Mount Link for the WREX is designed so that each of the three articulation; at the Mount Base, at the Link Joint and at the Pitch Mount Shaft can pivot 360 degrees. This will allow for the ability to...

  • Page 10: 2-3: Preparing Mount Base

    MR-10 Mount Base Installation Alignment Slot MR-10 Mount Adapter Moveable Jaw Arm Mount Base Locking Set Screws Locking Knob Base Clamp Screws Preparing Mount Base 1. Orient the Arm Mount Base as in illustration above. Insert the Mount Base Screw (supplied with Arm Mount Base) thru the Attachment Hole to the MR-10 Mount Adapter.

  • Page 11: 2-4: Mount Base Attachment

    Locking Knob. 6. Preposition the Mount Links so that the Shaft Mount Base that receives the Pitch Mount Shaft is located in the lateral 1/3 of the clients torso on the side which you intend to use the WREX Arm.
  • Page 12 7. Snug but do not tighten the six Clamp Screws using the large T-Wrench. Add enough tension so that the joints do not move easily but can be repositioned if required to optimize the arm alignment. Note: Do not tighten the Clamp Locking Set Screws at this time.

  • Page 13: 2-6: Preparing Mount Base

    MR-8 Mount Base Installation For use on some Invacare and Motion Concept Seating Systems T-Nut MR-8 Mount Base Adapter T-Nut Screws Alignment Slot Arm Mount Base Locking Knob Attachment Hole Preparing Mount Base 1. Locate and mark an area 2 to 8 inches below the clients shoulder on the Keyed Back Post of the wheelchair.
  • Page 14 Mount Base Attachment 1. Using the large T-Wrench loosen, Do not remove, the two T-Nut Screws on the MR-8 Mount Adapter. 2. Insert the T-Nut into Keyed Back Post channel and position the MR-8 Mount Adapter at the marked location (see Preparing Mount Base #1). Tighten the two T-Nut screws.

  • Page 15: 2-8: Optional Side Attachment

    Optional Side Attachment 1. Using the large T-Wrench loosen, Do not remove, the two T-Nut Screws on the Mount Adapter. 2. Insert the T-Nut into Keyed Back Post channel and position the MR-8 Mount Adapter at the marked location (see Preparing Mount Base #1).
  • Page 16 Shaft Base that receives the Pitch Mount Shaft is located in the lateral 1/3 of the clients torso on the side which you intend to use the WREX Arm. 7. Snug but do not tighten the six Clamp Screws using the Large T-Wrench. Add enough...

  • Page 17: Mount Screw

    MR-7 Mount Base Installation For use on some Permobil and Other Seating Systems Mount Screw MR-7 Arm Mount Base Mount Base Alignment Slot Adapter Reinforcement Washer Locking Knob Attachment Hole Preparing Backrest and Mount Base 1. Remove backrest cushion. 2. Tape the template on the back of the backrest 1 ½ to 2 inches down from upper edge and as close to the midline as possible.

  • Page 18: Pitch Mount Shaft

    Locking Knob. 9. Preposition the Mount Links so that the Mount Shaft Base that receives the Pitch Mount Shaft is located in the lateral 1/3 of the clients torso on the side which you intend to use the WREX Arm. 2-11...

  • Page 19: Pitch Pivot

    Note: Check to insure the Clamp Screws are accessible. If they are not complete the steps on page 2-13. 10. Snug but do not tighten the six Clamp Screws using the Large T-Wrench. Add enough tension so that the joints do not move easily but can be repositioned if required to optimize the arm alignment.

  • Page 20: 2-13: Rotating Mount Arms

    Rotating Mount Arms 1. Lay the Mount Arm flat on work surface. 2. Using the large T-Wrench remove the two Clamp Screws and the Arm Clamp from the 4 inch Mount Arm. 3. Rotate the 3 inch Arm and position the 4 inch Mount Arm onto the Joint Pin as shown.

  • Page 21: Section 3: Wrex Arm Setup

    Section WREX Arm Setup...

  • Page 22: 3-1: Measuring And Presetting Arm Components

    Measuring and Presetting Arm Components The WREX is designed for optimum functionality when all of its exoskeletal articulations can approximate the patients anatomical joints. Although this can not be exact, careful measurement and pre-fitting of the arm components will maximize the outcome.

  • Page 23: 3-1: Select And Pre-Fit Forearm Support

    3. Remove the clients arm from the Forearm Support. Attach Forearm Support to WREX Arm 1. While depressing the button on the side of the Forearm Support Slide Saddle. 2. Slide the L-Bar into the Slide Saddle from the top.

  • Page 24: 3-3: Measure And Preset Humeral Elevating Links

    Record this measurement. 2. Lay the WREX arm flat on a work surface. 3. Using the medium T-Wrench remove the Four screws that connect the sections of the upper and lower Humeral Elevating Links 3.

  • Page 25: Section 4: Fitting And Adjustments With Client

    Section Fitting and Adjustments with Client...

  • Page 26: Pitch Link

    3. Slide the Pitch Link into the square hole of the Pitch Pivot. Note: The WREX arm is designed to have as little friction as possible at all of its articulations. For client safety please be sure to control the entire device as...

  • Page 27: Shoulder Link

    Position WREX Shoulder Joint Pitch Pivot Adjustment 1. Using the large T-Wrench, while supporting the WREX arm, loosen the screw on the Pitch Pivot adjustor. 2. With the aid of the Bubble Level position the Pitch Link so that it is horizontal and parallel to the floor.

  • Page 28: Roll Pivot Adjustment

    Roll Pivot Adjustment 1. Using the large T-Wrench loosen the screw for the Roll Pivot Adjustment. 2. With the aid of the bubble level roll the adjustment medially or laterally until the bubble is centered. 3. Tighten the Roll Pivot Adjuster Screw. 4.

  • Page 29: Upper Humeral Pivot

    Place the Clients Arm into the WREX Because the WREX operates with band tension it must carefully be handled during arm placement to prevent injury 1. With one hand support the WREX arm under the Forearm Support. 2. Using your other hand lift the clients arm with his/her elbow flexed and place it in the Forearm Support.

  • Page 30: Band Spool

    The optimal number of bands allows for the client to move through their maximal range of movement. The client must be able to return to starting location to avoid the arm floating in space without control. JAECO supplies three sizes of elastic bands: Blue: Large Red: Medium Beige: Light Note: Start with the largest bands then use the smaller bands to “fine tune”...

  • Page 31: Basic Adjustment For Functionality

    Only make one adjustment at a time (example: if the client is having trouble reaching across their body at and forward. Adjust one or the other to optimize that movement before working on the next) Give the client the opportunity to use the WREX multiple times before making major adjustments...

  • Page 32: Desired Functional Outcomes Of The Wrex

    – Adjusting glasses – Etc. Removing the Arm from the WREX Because the WREX operates with band tension it must carefully be handled during arm removal to prevent injury • Secure Forearm support with one hand holding in place •...

  • Page 33: Finalizing Setup

    • Make adjustments as necessary to achieve functional use. Secure the Settings Evaluate the WREX with a variety of activities. When you and the client are satisfied with the overall function, secure the settings. Insure all knobs are tight. Using the large T-Wrench insure all screws are tight.
  • Page 34 WREX Product Numbers JWREX-1-L: WREX Arm left (Forearm Support sold Separately) JWREX-1-R: WREX Arm right (Forearm Support sold Separately) Forearm Support Size Chart WFS-6: Ex.Small Elbow to wrist crease length: Minimum - 6" Maximum - 7-1/2" WFS-8: Small Elbow to wrist crease length: Minimum - 8-1/2" Maximum - 9-1/2"...
  • Page 35 6 in. Pediatric WFS-8 8 in. Small WFS-9 9 in. Medium WFS-10 10 in. Large FSC-1 Custom: Supply measurements Custom Forearm Support Measurements Forearm Length Wrist Circumference Forearm Circumference 4-10 (501) 623-5944 * Fax: (501) 623-0159 * Email: info@jaeco-orthopedic.com * Web: www.jaeco-orthopedic.com...
  • Page 36 214 Drexel Hot Springs, AR 71901 Ph: 501-623-5944 Fax: 501-623-0159 Email: info@jaeco-orthopedic.com www.jaeco-orthopedic.com January 18, 2007...

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