Hapo HD – Back Exoskeleton for Forward-Bending Work

The Hapo HD is a passive exoskeleton, meaning it is entirely mechanical. It contains no motor, no battery and no electronic sensor: its assistance relies solely on a set of leaf springs housed in a back casing. This technology reproduces the role of an artificial muscle, with no electrical power at all.

The principle is simple and robust. When the user bends forward, the leaf springs deform and store the energy of the flexion. On straightening up, they release this energy to accompany the trunk's movement, alongside the lumbar muscles. The back is thus relieved precisely where it is most heavily loaded, without the user having to think about anything: the assistance is automatic and proportional to the amplitude of the flexion.

Choosing a passive exoskeleton like the Hapo HD has several concrete advantages in the field. First, there is no recharging to manage: no battery to watch, no downtime, no charging schedule at the end of a shift. The device is operational at all times, over a whole day or across several successive shifts. Second, the absence of electronic components makes it particularly light, reliable and resistant. It tolerates dust, humidity and temperature variations (from -10 °C to +40 °C), which makes it suited to industrial, logistics, agricultural or construction-site environments.

This simplicity also has a direct effect on maintenance and running costs. A passive exoskeleton has far fewer parts that can fail than a motorized model. There is no sensor to recalibrate, no software to update, no battery cycle that degrades over time. Maintenance comes down mainly to cleaning the textile elements and periodically checking the straps and springs.

Conversely, an active (motorized) exoskeleton can deliver stronger, programmable assistance, but at the price of more weight, limited range and a clearly higher budget. For the vast majority of tasks involving repeated trunk bending and moderate load carrying, the Hapo HD's mechanical assistance offers the best balance between effectiveness, comfort and simplicity.

In short, the Hapo HD is a passive device with no battery and no complex maintenance, designed to fit durably into the movements of everyday professional life. It acts as smart, silent lumbar support that accompanies the body without ever constraining it, and that contributes to the prevention of musculoskeletal disorders (MSDs) without imposing any electrical logistics on the company.

The Hapo HD back exoskeleton weighs about 1.13 kg, making it one of the lightest lumbar-support devices in its category. This featherweight is made possible by the use of ultra-light, strong materials: a technical stretch textile, reinforced straps and composite-material leaf springs housed in a compact casing.

Weight is an essential criterion for equipment meant to be worn for hours. An exoskeleton that is too heavy ends up tiring its user and being abandoned: it is one of the first causes of giving up on this kind of equipment. With a little over a kilogram cleverly distributed over the shoulders and thighs, the Hapo HD goes unnoticed. The load is not concentrated at a single point, but distributed along the device, which avoids pressure points and feelings of heaviness.

The Hapo HD goes on like a backpack. Two straps pass over the shoulders and two cuffs position themselves on the thighs; the whole is linked by the back casing containing the springs. This architecture transfers part of the lumbar effort to the thighs, while staying compact. The user keeps freedom of movement and can chain tasks without hindrance.

The device's lightness also plays a role in its acceptance by teams. When an operator tries an exoskeleton for the first time, the immediate feeling of comfort largely determines their buy-in. A light device that does not heat up (no motor), does not squeeze and does not hinder walking is far more easily adopted over the long term. And it is precisely regular use that produces a real benefit in preventing back pain.

To put this weight in context, the Hapo HD measures about 120 cm in length, 38 cm in width and 12 cm in height. It therefore stays compact when stored, and can be carried easily from one workstation or site to another. Its Oeko-Tex certified stretch textile also guarantees the absence of harmful substances in contact with the skin, an important point for equipment worn over work clothes all day.

Ultimately, these 1.13 kg reflect a genuine design choice: offering effective lumbar assistance without weighing the user down. It is this balance between lightness, comfort and mechanical support that makes the Hapo HD a lasting ally against back fatigue and the musculoskeletal disorders linked to forward-bent postures.

The Hapo HD is designed for all activities that involve repeated or prolonged trunk bending, as well as carrying and putting down loads. As soon as a workstation requires bending forward regularly, the device is useful by relieving the lumbar area with every movement.

In logistics and order picking, it accompanies operators who pick up, lift and put down packages all day. In industry and production, it helps people working on low lines, workbenches or bulky parts that require stooping. On building sites and in construction, it supports the back when handling materials, formwork or tasks done at floor level.

The agricultural and environmental sector benefits just as much from the Hapo HD: harvesting, planting, pruning, packing, bent-over work on low crops… so many movements where the lower back is heavily loaded. Care and health trades (care assistants, laundry staff, patient transport) also find valuable support during transfers and mobility assistance, which often involve bending toward the patient or the load.

The common point to all these uses is the forward-bent posture, one of the most harmful for the lumbar spine when repeated hundreds of times a day. Every unassisted flexion loads the paravertebral muscles and increases pressure on the intervertebral discs. Over time, this accumulation promotes low-back pain, chronic fatigue and musculoskeletal disorders (MSDs), the leading cause of recognized occupational diseases.

By returning part of the effort on straightening up, the Hapo HD reduces this load. It does not replace good handling practice, but complements it: it acts as a mechanical safety net that limits the fatigue accumulated over the whole workstation. Operators generally report a “less heavy” back at the end of the day, and quicker recovery.

The Hapo HD is particularly relevant for workstations where flexion is frequent but not constant, that is, alternated with walking or moving around. Its lightness and freedom of movement in fact let you go from the bent position to walking without constraint. Conversely, for very specific tasks (arms overhead, head-up work, purely static support), other models in the Hapo range, such as the UP, the FRONT or the NECK, will be more suitable.

To determine whether the Hapo HD precisely matches your workstations, the ideal is still to analyze the movements performed and the frequency of flexions: it is this mapping that lets you target the situations where the exoskeleton will bring the most benefit in terms of prevention and comfort at work.

No. The Hapo HD was designed to preserve a great deal of freedom of movement and only comes into play when it is useful. Unlike a rigid support belt that permanently blocks the lower back, the exoskeleton only provides assistance at the moment of trunk flexion and straightening. The rest of the time — walking, rotating, arm movements — the user keeps their full natural range.

This discretion comes directly from its mechanical architecture. The leaf springs are only triggered by flexion: as long as the user stands upright or moves around, they stay at rest and offer no resistance. The assistance is therefore progressive and proportional: the greater the trunk tilt, the stronger the support on straightening. This “on-demand” behavior avoids the feeling of being restrained or pulled backward.

The Hapo HD goes on like a backpack, with two straps at the shoulders and two cuffs at the thighs. The support points are deliberately kept away from the joints so as not to hinder hip flexion or walking. The user can therefore alternate easily between the bent position, standing and moving, which is essential at workstations where handling and travel follow one another.

Wearing comfort also plays a role in this absence of hindrance. The stretch textile follows the body's movements, and the distribution of the load over the shoulders and thighs avoids pressure points. Since the device contains no motor, it does not heat up or vibrate: it stays silent and neutral throughout the shift. Many users say they forget it after a few minutes.

A short adaptation period should nevertheless be expected. As with any protective equipment, the first days are used to adjust the straps correctly and get used to the feeling of support when straightening. An adjustment suited to your build is decisive: too loose, the device loses effectiveness; too tight, it can feel constraining. Once the fit is found, any hindrance felt is minimal, even nil.

This freedom of movement is precisely what promotes lasting adoption of the exoskeleton by teams. A device you can keep on without constraint all day will actually be worn; and it is regular use that produces the sought-after benefit in preventing lower-back pain and musculoskeletal disorders. By limiting fatigue without limiting movement, the Hapo HD reconciles back protection with efficiency at work.

The Hapo HD exoskeleton has a 2-year warranty. This warranty covers spring breakage as well as manufacturing defects in the textile elements, that is, the two components essential to the device's proper operation. It reflects the confidence of the French manufacturer Ergosanté in the robustness of its product and the quality of its assembly.

This two-year duration is consistent with intensive professional use. The leaf springs, which are the heart of the assistance, are sized to withstand a very large number of flexion and straightening cycles without loss of performance. The stretch textile, Oeko-Tex certified, is selected to withstand daily wear, friction and washing, while guaranteeing the absence of harmful substances in contact with the skin.

To benefit fully from the warranty, it is generally recommended to register the product with the manufacturer after purchase and to keep proof of purchase. As with any protective equipment, the warranty applies within the framework of use in accordance with the instructions: respect for the conditions of use (dry environment, temperature range from -10 °C to +40 °C) and appropriate maintenance. Damage resulting from abnormal use, modification of the device or lack of maintenance is not covered.

Beyond the warranty itself, the Hapo HD was designed to last and be repaired. Its passive design, with no electronics or battery, removes the main causes of failure of motorized equipment: no cell that degrades, no electronic board, no software to maintain. The wear parts (straps, textile elements) can be maintained, and the springs are designed for high longevity. This approach reduces the total cost of ownership over the product's lifetime.

Reliability is in fact a central argument for companies deploying exoskeletons at scale: equipment that rarely fails, is simple to maintain and is guaranteed for two years limits interruptions and secures the investment in a musculoskeletal disorder (MSD) prevention approach. The warranty is therefore not just commercial protection: it reflects a robust, French, certified design.

If there is a problem during the warranty period, you should contact the reseller or the manufacturer with the serial number and a description of the problem. It is then handled according to the manufacturer's conditions, which handles parts tracking and device maintenance.

Yes. The Hapo HD is designed and made in France by Ergosanté, a company that has developed a complete range of mechanical exoskeletons meant to preserve the body at work. This French anchoring is officially recognized: the device carries the Made in France label, awarded after verification by French customs.

This local manufacturing is not just a marketing argument: it comes with genuine biomechanics research. Hapo exoskeletons are developed from the study of professional postures and movements, so that the mechanical assistance respects the body's natural movements. The Hapo HD is an illustration: its leaf springs have been calibrated to accompany trunk flexion and straightening precisely, without hindering other movements.

Beyond Made in France, the Hapo HD meets several demanding certifications. It complies with the CE Machinery Directive 2006/42/EC, which guarantees compliance with essential health and safety requirements. It is produced within an ISO 9001 quality framework, a sign of rigor and consistency in manufacturing. Its textile benefits from Oeko-Tex certification, which attests to the absence of harmful substances. The manufacturer is also engaged in an EcoVadis approach on corporate social and environmental responsibility (CSR).

For a company, choosing an exoskeleton made in France has several concrete advantages. The proximity of the manufacturer makes it easier to follow up, to get spare parts and to maintain the equipment, which secures the investment over time. It also simplifies exchanges in case of technical questions, deployment support or after-sales service, without the delays and uncertainties of a distant supply chain.

French manufacturing finally fits a logic of quality and durability. Production requirements, materials control and traceability contribute to the product's reliability, and therefore to its longevity. For organizations attentive to their impact, the French origin and the manufacturer's CSR commitment can also be a selection criterion aligned with their responsible-purchasing policy.

In short, the Hapo HD combines a claimed and certified French origin, a solid base of standards (CE, ISO 9001, Oeko-Tex) and a CSR approach. It is a device designed, tested and produced in France to answer concretely the challenges of preventing musculoskeletal disorders in professional environments.