Jaws HD Prehensor

Jaws HD Prehensor


JAWS is your answer to the many challenges persons with a hand absence face. JAWS is unique and powerfully functional. JAWS is a heavy duty, voluntary opening, prehensile-style, terminal device.

JAWS can be used with and without a cable harness system for versatility. JAWS can be mounted to a “myo” or electric arm with a special myo to body powered adapter. JAWS was conceived by amputee Bob Radocy, CEO of TRS prosthetics. Bob kept receiving inquiries from persons missing a hand, especially those using “myo” or electric hands frustrated with the electric technology’s performance but not wanting to go full voluntary closing, body power with a harness system. These individuals wanted to hold tools, handles, ride ATVs and snowmobiles, as well as other “off road” and “on water” vehicles like jet skis. Additionally there was a need to safely control and steer drivable farm and ranch equipment. JAWS was conceptualized with these needs “in mind” and over a period of two years was designed and developed. The uses for JAWS are endless.

JAWS uses “Vector” mechanics and technology. Vector technology was championed by Dr. Lawrence Carlson beginning in the 1990s into the 2000s. Dr. Carlson is a professor emeritus of mechanical engineering from the University of Colorado at Boulder. Vector technology allows the grip force of the prosthesis to be easily adjusted in force by changing the direction through which the spring force acts. This adjustability provides significant versatility, as well as the ability to achieve much higher gripping forces than are available in most voluntary opening terminal devices. Bob, who has worked closely with Dr. Carlson on the vector technology, took the concept and embedded it into JAWS. Combining the vector technology into a heavy duty gripping terminal device proved to be the perfect “match” of concepts.




  • • “Vector technology”… variable gripping force.
  • • “User” controlled, simple shift lever adjustment.
  • • Cable operated or manually operated.
  • • Snaps “On and Off”. Never locks!
  • • “Heavy Duty Performer” for excellent control
  • • Perfect for shovels, rakes, tool handles
  • • Exceptional freedom and control for work vehicles, “OFF Road” vehicles and activities like ATVs, Snowmobiles, Motocross, Trail Riding, Mountain Biking & Jet Skiing.
  • • Winter friendly! Water friendly!.
  • • Replaceable flexible shaft simulates wrist action.
  • • Mounts to all mechanical, USA prosthetic wrists.



  • • Made in the USA!
  • • “L Code” L6721



Product Documents

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All TRS products, including videos, parts and accessories are available from professional, certified prosthetic facilities. Additionally certain medical clinics and rehabilitation hospitals have prosthetic departments through which TRS technology is available.

Persons interested in comprehensive prosthetic service and care should always utilize the services of a certified prosthetist. Prosthetic facilities handle the coordination of your personal health insurance coverage, conduct billing for services and facilitate “Clinical Trials and Field Evaluations” of TRS products. Importantly these facilities and professionals ensure that your prosthetic technology and hardware is totally compatible, properly installed and aligned for optimal operation. TRS can help with referrals to certified prosthetic facilities that are familiar with TRS technology, in your area.



Hours of operation:

Monday-Thursday 7:30am-4:00pm MST
Friday 7:30am-12:00pm MST

Closed Holidays: New Year’s Day, Good Friday, Memorial Day, Independence Day, Labor Day, Thanksgiving Day and the day after, Christmas Day.

TRS DIRECT — 1.800.279.1865

TRS offers direct limited retail sales to consumers on specialized products (Listed below). Sports and recreational products and accessories and specific replacement parts are available directly from TRS. TRS does not bill insurance companies and all sales under this program are final. Products sold under this TRS Direct program cannot be returned. TRS accepts MasterCard and VISA payments.

Below is a list of products available directly from TRS:

• Barrage
• Cobra(s)
• Ski TD’s
• Dragon
• Helix
• HP Hoopster
• Jump Rope and Adapter
• Lamprey
• Mountain Master
• Multi D
• Power Play
• Raptor
• Swinger
• Golf Eagle TD
• Golf Pro
• Grand Slam Baseball Bat Adapter
• Hi Fly Fielder and Jr.
• Pinch Hitter Baseball Bat Adapter
• Freestyle Swim Device
• Amp-U-Pod Camera Adapter
• Hustler Pool Accessory
• Guitar Adapters
• Violin Adapter
• Drum Adapter
• Slap Shot Hockey
• Black Iron Lite
• Black Iron Master
• Black Iron Trainer
• Rebound Basketball Accessory
• Criterium Bicycle Handlebar Adapter
• Shroom Tumbler
• Single-Handed Bike Brake Lever
• Kahuna Surf
• Swim T.D.
• Hammerhead Kayak T.D.
• Replacement GRIP 3 Fingers/Gripping Surfaces
• GRIP Device Rebuild/Reconditioning Services

Custom Product Development services:


TRS products are available in Canada through a distribution arrangement with Myrdal Orthopedic Technologies (MOT) of Winnipeg, Manitoba. MOT serves prosthetic and orthotic facilities throughout Canada and stocks a broad variety of TRS products. MOT coordinates the “Customs Clearance” required on prosthetic goods imported into Canada.

MOT Toll Free In Canada 877.395.0081


TRS also can sell to consumers who prefer a direct relationship and have the financial means to purchase via M/C or VISA. Customs clearances, Customs fees and VAT are the responsibility of the purchasing customer.




Fillauer Europe distributes TRS products throughout Scandinavia, the UK and many European countries. Fillauer Europe network and contacts in Europe are:

UK Ortho Europe & Steeper
Holland & Belgium Loth Fabenim, Nettie van Velzen, [email protected]
France OKO Solutions SAS, Alexandre Okorokoff, [email protected]
Germany Ortho Neuhof
Spain & Portugal EMO, Leopoldo, [email protected]
Switzerland FREY
Italy Simona Rosa, [email protected]
Austria Ortho Neuhof
Denmark, Sweden Fillauer Europe
Norway, Finland Fillauer Europe



TRS is seeking stocking distributors in countries not currently served by our current distributors. Contact Bob Radocy directly at [email protected] to open up a dialogue about what may be possible.

TRS offers a generous, one time, discount program for new distributors enabling the purchase of a complete line of production quality samples.


TRS can sell product directly to consumers outside the USA, via M/C or VISA. Customs clearances, customs tariffs, etc. are the responsibility of the purchasing customer. Make inquiries to:


TRS – Therapeutic Recreational Services
3090 Sterling Circle, Studio A,
Boulder, CO 80301

Phone 303.444.4720
Fax 303.444.5372

Bob Radocy, President
[email protected]

Linda Martin
[email protected]

Client Testimonials

TRS shipping is closed on the last two business days in June and December for inventory purposes. All orders received on those days will be processed after inventory is complete on the first business day in July and January.