This new Radio Frequency IDentification Tag (RFID) based system enables upper-limb prosthetic users to switch grasp modes in multi-articulating hands (Bebionic and iLimb) by simply moving their prosthesis close to an RFID tag. These tags can be placed near an object that they frequently grasp (i.e. telephone, computer mouse, keyboard, etc.) or on their clothing or jewelry. Once the MORPH antenna in the prosthesis detects an RFID tag, it automatically switches the hand to a pre-determined grasp pattern. The prosthetic user no longer needs to depend on muscle triggers alone to switch grasps. A tag can also be used to turn off the hand to accommodate the user who wants to maintain a grasp, such as holding a beverage container or briefcase. The standard MORPH is used with the iLimb hand to select one of the four pre-defined grasps. The MORPH+ is used with the Bebionic hand to access the hand controller directly and can select up to 10 grasps. (MORPH™ is a trademark of Infinite Biomedical Technologies)
LTI specializes in integrating iLimb and Bebionic hands into prosthetic systems using the most advanced technology. The new MORPH system provides another tool for prosthetists to use when fitting a patient with limited myoelectric signals, such as bilateral amputees or those with shoulder disarticulations. For more information about this innovative prosthetic technology, contact LTI at 800-437-0024.
FlexCells™ Added to Line of LTI Batteries
Liberating Technologies has a line of 7.4 volt lithium-polymer batteries for upper-limb prosthetic applications. They range in capacity from 450 to 750 mAH and vary in size and shape to enable them to fit into most prostheses. However, sometimes space constraints require a battery that can be shaped to the inside curvature of the forearm and therefore, LTI is now supplying FlexCell™ batteries for these applications. FlexCells are just 3.3 mm thick and are available in increments of 550 mAH. Since the cells can be combined, the capacities actually range from 550 to 2200 mAH and are suitable for most upper-limb prostheses. They are supplied with a low-profile intelligent on/off module with fuel gauge, a thin recharge module, and magnetic charge connector. Magnetic wall chargers are supplied with all FlexCell kits. (FlexCell™ is a trademark of Infinite Biomedical Technologies)
LTI specializes in integrating various components into prosthetic systems using the most advanced technology. FlexCell batteries provide another option for prosthetists to use when fitting a patient with limited space or a challenging fabrication. For more information about this innovative prosthetic technology, contact LTI at 800-437-0024.
New Bebionic V3 Prosthetic Hand
The latest Bebionic hand, the version 3 has been released. This new multi-articulating prosthetic hand builds on the previous Bebionic V2 hand. It has several improvements to increase strength and durability, including an aluminum chassis at the MCP joints, steel channel finger linkages, redesigned mechanical finger fuses, more robust thumb base. It also has soft finger palps and a wider thumb for improved grasp. Additionally, the V3 hand has new grasp patterns including; precision grip, improved tripod grip, mouse grip and trigger grip - now 14 functional hand positions are provided. The wireless programming module has been moved from the wrist to inside the hand and the bebalance™ software has been simplified.
LTI specializes in integrating the Bebionic hand with other products like the Boston Digital Arm System for trans-humeral patients. For more information about these new and innovative prosthetic devices, contact LTI at 800-437-0024
New iLimb Ultra-Revolution Prosthetic Hand
The newest iLimb hand, the Ultra-Revolution, has been announced. This builds on the iLimb Ultra Hand design, but the Revolution provides another unique feature – a powered rotating thumb. The thumb automatically shifts from lateral to opposition grasp, thus eliminating the need for the user to involve their sound-side hand. This hand still has the varigrip and the auto-grasp features and since each finger has individual stall current detection, the hand conforms to the shape of the object that it is grasping. Revolution and Ultra hands are available with three wrist options; a QD wrist, Flex-wrist or Multi-flex wrist. The Biosim™ mobile control application is also unique. This enables the user to access 24 grasp patterns through a mobile device app. The Touch Care™ system is also available. This provides extended warranty coverage and support, an iPod/Touch with the Biosim app and replacement iLimb Active Skins as well as a courtesy hand if required during servicing.
LTI specializes in integrating the iLimb hands with other products like the Boston Digital Arm System for trans-humeral patients. For more information about these new and innovative prosthetic devices, contact LTI at 800-437-0024.
Boston Digital Arm featured in Targeted Muscle Reinnervation presentation at AAAS Meeting
An upper-limb prosthesis using Targeted Muscle Reinnervation was demonstrated by Dr. Todd Kuiken at the recent American Association for the Advancement of Science (AAAS) meeting. This prosthesis featured a new pattern recognition system with the LTI Boston Digital Arm. This innovative technology provides greater dexterity and better control than traditional prostheses. It uses input signals from reinnervated muscles and interprets the pattern of these signals to determine the user's desired movement.
to view this presentation, click this link: http://www.eurekalert.org/aaasnewsroom/2011/watchbriefing.php?page=3
New Locking Humeral Rotator
LTI announces the new exoskeletal Locking Humeral Rotator for use with both conventional elbows and the Boston Digital Arm System. Friction joints are often set with either too much or too little friction to be useful for all tasks. A locking humeral joint enables the user to position the forearm easily when unlocked, then lock it in place. This humeral rotator allows the user to keep the lock in free movement (unlocked) or locked in one of 24 locking positions - every 15 degrees. The joint allows up to 340 degrees of humeral rotation, weighs just 170 grams and is relatively low profile, only 1½” high. In addition to the lock activator tabs on the sides of the joint itself, an optional Bowden cable lock activation system is also available.
When used with the Boston Digital Arm System, this Locking Humeral Rotator replaces the standard friction lamination collar assembly (BE 302). When used with conventional prostheses, the mounting plate has a 3/8" hole to accept an elbow mounting stud, like the Hosmer Elbow.
M-Fingers for Partial Hands
Liberating Technologies introduces the new Partial M-Fingers to augment the full M-fingers for partial hand kit. This kit consists of dexterous fingers, a multi-position friction thumb and mounting plates for use in a mechanical hand assembly. The fingers and thumb have urethane over-molds to provide better grasp and molded-in finger nails for picking up small objects. The fingers are actuated by a Spectra cable that crosses the wrist and is controlled by simple wrist flexion. Each finger independently conforms to the shape of the object it is grasping, thus allowing for multiple grasp patterns. M-Fingers are available in a variety of lengths and colors and can be customized to meet the specific needs of the patient. M-Fingers are normally built onto a silicone partial hand socket with the appropriate number of fingers and finger sizes to match the sound-side hand. This fabrication can be done by the local practitioner or through one of several qualified central fabrication facilities.
LTI Locking Shoulder Joint Wins Design Award
The new LTI Locking Shoulder Joint was the winner of this years Gold Engineering Award from Product Design and Development Magazine. It has been redesigned to provide more strength and greater resistance to wear. Made from high strength aerospace alloys, the joint is a durable and yet light-weight (143 grams). The shoulder swings in a natural arc during gait, but it can be locked in 36 positions, or every 10°. The joint can be left in either the free-swing or locked mode. The user can free the joint manually or by using an optional nudge control. A powered unlock option (shown in photo) was announced in 2009. Abduction/adduction is achieved through a second hinge with adjustable friction. The LTI Locking Shoulder Joint can be used in both endo- and exo-skeletal prosthetic systems.
The L-codes approved in January 1, 2003 apply to this new shoulder joint:
- Upper extremity addition, shoulder joint, multipositional locking, flexion, adjustable abduction friction control, for use with body powered or external powered system
Boston Arm on Good Morning America and Oprah Winfrey Shows
On September 14, 2006 Claudia Mitchell appeared on Good Morning America and on October 14, on the Oprah Winfrey Show. Ms. Mitchell, a high-level unilateral amputee, demonstrated her sophisticated prosthesis and her ability to operate several joints simultaneously in a coordinated movement. Unlike traditional prostheses, her state-of-the-art prosthetic system is a complex assembly of components from around the world. The foundation however, is a Boston Digital Arm System from LTI. It provides the power and manages all of the devices in the system; hand, wrist flexion/extension, pro/supination, elbow flexion, etc.
Ms. Mitchell underwent targeted reinnervation surgery at the Rehabilitation Institute of Chicago earlier this year, enabling her to produce 10 muscle signals to operate her prosthesis. LTI Remote Electrodes acquire signals from these 10 sites and the Boston Digital Arm System’s micro-computer receives these signals and determines which motors to run. Based on the individual signal strengths, it also sets the speed of each device. As a result, she can operate up to five devices simultaneously giving her broader capabilities, greater efficiency and more natural motion than conventional prosthetic systems.
New Electrode Options
Liberating Technologies now offers two options for prosthetic myoelectrodes: traditional cased electrodes similar to the Bock 13E200 and remote electrodes. Both have excellent performance with high sensitivity, good ambient noise immunity (50 and 60 Hz filtering), on-board gain adjustment and competitive pricing. The cased electrode (SEA200) enables practitioners to use traditional myoelectric signal acquisition methods. This electrode kit comes with both lamination and thermoplastic dummies. The remote electrode (DC200) is designed for use where space is limited and cosmesis is critical. This electrode-amplifier is thin and can be concealed in the cavity between the inner and outer sockets with shielded wires leading to separate metal electrodes in the socket. The metal electrodes are available in three sizes/shapes to get the optimum myoelectric signal for the particular fitting. LTI stocks both of these products and the associated cables and connectors to make them compatible with Bock and other manufacturer’s systems
Boston Arm on Good Morning America and the Today Show
On June 30, 2005, Jessie Sullivan, a shoulder-level bilateral amputee, demonstrated his state-of-the-art prosthetic system to the nation on Good Morning America. He grasped a bottle of water and brought it to his lips to show the dexterity he has with this unique prosthetic system.
Dr. Todd Kuiken and his team at the Rehabilitation Institute of Chicago, transplanted nerves from Mr. Sullivan’s arm to muscles on his chest. Once these nerves reattached, his chest was mapped for muscle signals and LTI electrodes were placed over sites that represented muscles previously in his arm. The micro-computer in the Boston Digital Arm detects these signals and manages the operation of the various prosthetic motors. It not only determines which device to operate, but based on the muscle signals, it also determines the desired speed and direction. Because Mr. Sullivan has eight independent myoelectric inputs, he can run his prosthetic devices simultaneously for greater efficiency and more natural movements.
The prosthetic system consists of a Boston Digital Arm as the elbow joint and control platform for the five additional powered joints: a humeral rotator, shoulder joint, hand, wrist flexion and wrist rotation. The system was built through a collaborative effort between the Rehabilitation Institute of Chicago, Liberating Technologies, Inc. and Northwestern University. It is the most sophisticated upper-limb prosthetic system ever fit to a patient with more degrees of freedom than previously provided.