Method of finding a thigh support having geometry, rigidity, and elasticity for most optimal blood circulation in the lower extremities of a seated person

Abstract

A method of finding a thigh support for most optimal blood circulation in the lower extremities of a seated person consisting of measuring a blood-circulation parameter such as blood-flow velocity through the lower extremities of a seated person under different seating conditions, including those with or without the use of any thigh-supporting means. It has been proven that with the use of a thigh-supporting means, the measured blood-circulating parameter was much better than in a person seated without the use of a thigh-supporting means. Blood-flow velocity through the lower extremities of a person seated on the aforementioned seating device was measured by determining the Doppler shift in the frequency of returning ultrasound waves.

Description

FIELD OF THE INVENTION[0001]The present invention relates to the field of ergonomics and, more specifically, to the method of finding a thigh support for the most optimal blood circulation in the lower extremities of a seated person.BACKGROUND OF THE INVENTION[0002]Sitting is the most frequent body posture: we sit at work, at school, in the car, on the bus, on the train, in an airplane, and so on. Those who are wheelchair-bound are in seated positions for an entire day.[0003]A seat should take the weight off one's feet in order to lessen stress on the legs, and the seat should provide some postural stability while one works or relaxes. One should also be able to relax muscles that are at rest.[0004]Seat height should not be so high that the occupant's legs are left dangling. This would mean that there would be pressure on the soft tissues under the thighs. This pressure can interfere with the return of blood from the lower limbs, which may cause tingling and numbness in the thighs d...

AI Technical Summary

Benefits of technology

The method quantitatively demonstrates improved blood circulation in seated individuals when using the optimized thigh support, identifying the most effective geometry, rigidity, and elasticity for enhanced circulation compared to unsupported seating.

Problems solved by technology

This pressure can interfere with the return of blood from the lower limbs, which may cause tingling and numbness in the thighs due to pressure on blood vessels and nerves.

At the same time, there exists an opinion that prolonged travel in a seated position can cause venous stasis, which means loss of proper function of the veins that carry blood back to the heart from a person's legs.

This means that the legs of a seated person are to a greater extent subject to tingling and numbness in the thighs caused by pressure on blood vessels and nerves.

However, since the G-seat Gel Cushion is substantially flat, the problem is solved only partially.

The above-described thigh support does not solve the aforementioned problem of localized pressure on the thigh surfaces at the edge of the transverse thigh support and, instead, only shifts the position of the edge.

However, all of these devices are permanently built into the structure of the seat, operate with the use of complicated and expensive mechanisms, and change only vertical and angular positions of the transverse thigh support.

However, this statement is qualitative because no one has tried to measure the degree to which use of such support can improve blood circulation in the legs of a seated person nor the geometry, rigidity, or elasticity required of such thigh support for the most optimal blood circulation.

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