Wonderful MBEH-2

The MBEH-2 belongs in prosthetic and orthotic clinics, limb-fitting centres and upper-limb rehabilitation services that fit powered hands to people with a short stump of the arm. Prosthetists build it into the wearer's prosthesis, technicians handle the assembly at the bench, and occupational therapists work with the wearer as they learn the muscle contractions that open the fingers and turn the wrist.

Its place in a fitting programme comes from the wrist. Because the hand rotates through 360° under myoelectric control, therapy sessions can centre on the turning tasks of a normal day. Typical examples are pouring water from a jug into a glass, turning a key in a front door, twisting the lid of a jar, and bringing a spoon to the mouth at a comfortable angle. Each of these asks the hand to rotate while the arm holds its position, which is the movement the MBEH-2 is built to provide.

For wearers with a short residual limb, a light hand matters at every stage, from first fitting to daily wear. At 0.28 kg the hand adds little mass at the end of a short lever, and the aluminium and carbon fibre frame accounts for that low figure. The three-finger form suits wearers who favour a simple, functional grip, while the five-finger form gives a fuller hand shape for those who want it.

The options let a clinic tailor the hand to a person's routine. Waterproofing suits kitchen and washroom work, anti-EMI protection suits wearers who carry a mobile phone close to the limb, and the two-dimension function can be added to the hand where the fitting calls for it. Rehabilitation teams can then plan training around the tasks a given wearer cares about most.

The arm stays still while the hand turns

Rotation happens at the wrist, so the shoulder and trunk stay settled while an object is angled. The forearm holds its place and the hand alone changes orientation, which keeps movements small and quiet in company.

Pouring at a natural angle

Tipping a jug or kettle depends on a steady turn of the hand. With 360° of muscle-controlled rotation, the wearer can tilt the spout gradually and stop at the angle the pour needs.

Keys turned at the lock

A key needs a twist once it is in the lock. The MBEH-2 supplies that twist at the wrist, so the wearer can stand at the door in an ordinary posture and turn the key as anyone would.

Jar lids and door handles within reach

Opening a jar and working a door handle both rely on rotation. Because the wrist turns either way, the wearer can loosen a lid or turn a handle in the direction the task calls for.

Mealtimes with an angled spoon

Bringing food to the mouth is easier when the spoon can be tilted level. Rotating the hand under muscle control lets the wearer adjust the spoon's angle at the table without lifting the elbow high.

A light hand for a short residual limb

At 0.28 kg, the MBEH-2 keeps the weight at the end of a short stump low. That matters through a full day of wear, when every gram is carried on a short lever.

A finger count that suits the wearer

Choosing three fingers or five allows the fitting to follow the person's priorities. One wearer may want a straightforward working grip, while another wants a hand that reads as a hand at a glance.

Options matched to daily life

Waterproofing, anti-EMI protection and the two-dimension function are each available as options. A clinic can specify only what the wearer's routine calls for, whether that involves water, a phone in the pocket, or both.

Two degrees of freedom

Finger action and wrist rotation are the two controlled movements of the MBEH-2. Together they let the hand both grip an object and change its angle.

360° wrist rotation

The wrist travels through a full circle. Any orientation a task demands sits within that range.

Right and left rotation

Turning is available in both directions. A lid that loosens one way and a key that turns the other are equally within its range.

Myoelectric finger actions

Opening and closing of the fingers responds to the electrical signals of the wearer's own muscle contractions, giving the grip a direct link to the wearer's intent.

Myoelectric wrist control

Rotation answers the same muscle signals that drive the fingers. A single control approach governs both degrees of freedom.

Three-finger configuration

This form concentrates on a functional grip. It carries the full wrist rotation and finger control of the hand.

Five-finger configuration

For wearers who want a complete hand shape, five fingers are available. Rotation and finger control are the same in this form.

Aluminium in the frame

Aluminium contributes to the structure of the hand. It keeps the frame light while giving it a metal core.

Carbon fibre in the frame

Carbon fibre forms part of the construction alongside the aluminium. The pairing brings the finished hand to a low mass.

Mass of 0.28 kg

The complete hand weighs 0.28 kg, which is 280 g. That figure is what the wearer carries at the end of the limb throughout the day.

Designed for a short stump of the arm

The MBEH-2 is intended for wearers with a short residual arm. Its light build and wrist rotation both serve that group directly.

Waterproof option

A waterproof version can be specified. It suits a routine with time spent at a sink, a basin or a kitchen counter.

Anti-EMI option

Protection against electromagnetic interference is available for the myoelectric control. It shields the hand's response from mobile phones and similar devices.

Two-dimension function option

The two-dimension function for the hand is the third option on the MBEH-2. It is added to the standard hand when the fitting calls for it.

The MBEH-2 suits clinics fitting people with a short stump of the arm who want their everyday turning tasks to happen at the hand. Its case rests on one movement: a wrist that rotates through 360° in either direction on muscle command, so pouring, unlocking a door, opening a jar or angling a spoon can be done with the arm held still. The choice of three or five fingers lets a fitting follow the wearer's own priorities, and the three options let it follow their routine. For a wearer who values calm, compact movement with the arm at rest, this hand is a strong fit. It weighs 0.28 kg in aluminium and carbon fibre.