**4.3 Design of supports to avoid pressure zones in the body segments**

The average qualification for this criterion was very good, although we insist on reviewing any pressure zones.

### **4.4 Materials used for creation the stander**

The testers expressed that they look tough and that they are suitable for durability and strength. Another evaluator requested a technical sheet of the stander and the value of the resistance of the materials. The grade point average for this criterion was very good. One of the elements highlighted in the structure was the use of a special weld, which guarantee safety in the different joints of the standing frame.

### **4.5 Structural strength of the staircase**

In this item, the evaluators stated that the design and manufacture guaranties the resistance of the stanchion and suggested performing load-bearing tests for a more generalized use. The grade point average for this criterion was very good.

Considering that the structural resistance of the prototype is fundamental, the researchers consulted with a mechanical engineer to make a 3D modeling, in which a simulation was intended to find resistance values and critical points in the structure. Regarding the load-bearing test, when manufacturing the prototype, a static test with a weight of 100 kg was performed for 24 hours, finding that the structures did not suffer any damage. However, to conduct other types of tests, it must have another manufactured stanchion, which is available only to measure with what applied force it could suffer some damage.

### **4.6 Weight of the staircase**

The evaluators stated that it is a bit heavy, however it is much lighter than other types of stanchions that do not have an electric motorization system; They also expressed that another type of material such as aluminum could reduce the weight. The grade point average for this criterion was very good.

### **4.7 Ease of handling**

In this evaluation criterion, the evaluators stated that they are concerned about children with spina bifida who have attention and coordination difficulties, they stated that the regulatory system could be improved to make it easier for the family to manipulate, modifying it to a system of pin commonly used on crutches and canes; it is also required to improve transportability. The grade point average for this criterion was very good.

### **4.8 Expansion capacity in the different segments whereas loads is produced**

The experts expressed that the stander offers wide possibilities to adjust the size in different parts of it, although some adjustments are required to improve the expansion capacity in the seat. The grade point average for this criterion was excellent.

### **4.9 Stander dimensions**

The experts stated that they were adequate to achieve difficult accesses, although, if it does not risk stability, it would be preferable to shorten it a bit; another expert said he finds it a bit cumbersome to fit into an average car. The rating for this criterion was very good.

**83**

*Design of a Standing Device for Children with Spinal Dysraphysm*

The grade point average for this criterion was very good.

**4.12 What other evaluation item would you formulate?**

reviewed at the time of series production.

**4.10 Esthetic appearance in shape, textures, accessories, colors, among others**

The evaluators stated that the colors were very striking, had very special details and colors with a specific objective. The grade point average for this criterion was

The stander met the hygiene requirements set by the researchers and evaluators.

The experts proposed the following form evaluation criteria for the stander:

In the same way, the group of experts made the following contributions from the

• Check the push bar, as safety concerns for the people accompanying the child, their companions or caregivers. Regarding this recommendation, the researchers proceeded to shorten the bar by 30 cm, to avoid accidents in

• Consider foot deformities, specifically the tendency to clubfoot, added to the absence or little sensitivity in relation to the footrest. Here, the patient has an AFO type orthosis, which favors the stabilization of these segments, even more so when acquiring the bipedal position. However, this aspect should be

• Pelvic belt and foot safety at 45°, with Velcro: regarding the angulation of the pelvic belt, it would be necessary to do it in the case in which the prototype only offered the possibility of maintaining the sitting position, however, when also assisting the position bipedal, a position must be found that ensures stability in

• Abductor stop: the population with altered tone requires this help. This modifi-

• Wider wheels: for the rear wheels, it is possible to carry out this modification, however for the front wheel it would involve a considerable increase in friction, which would not allow the user to easily direct the movement of the

• Modification of the command panel: one of the evaluators considers that it is necessary to change some buttons, so that they are easier for the user to understand. Regarding this, the researchers performed a previous test, with

cation is intended to be conducted in subsequent prototypes.

stander, consequently a complete change in steering system.

*DOI: http://dx.doi.org/10.5772/intechopen.97758*

**4.11 Ease off cleaning the staircase**

• Durability of materials

• Manipulation by the family

• Inquire about costs

open questions:

other people.

both positions.

very good.
