WO1996009801A1

WO1996009801A1 - Disc and joint protection belt

Info

Publication number: WO1996009801A1
Application number: PCT/FR1995/001247
Authority: WO
Inventors: Gérard MOISAN
Original assignee: Moisan Gerard
Priority date: 1994-09-29
Filing date: 1995-09-28
Publication date: 1996-04-04
Also published as: FR2725127B1; FR2725127A1

Abstract

A functional disc and joint protection belt comprising a rear portion curved according to size, two straps 4-8 cm wide that are straight for men and curved for women, an abdominal support guard protecting the buckle, and a pull tab, the length of said belt varying with each size. The curved rear portion fits the male or female pelvis. The belt axis is at the L5-S1 level for men and at the L4-L5 level for women. The man's belt leaves the iliac crests exposed and covers lumbar vertebrae L4-S3 while the woman's covers L4-S2.

Description

The present invention relates to a DISC PROTECTION BELT AND

ARTICULAR, during manual handling, while respecting the physiology of movement of the lumbar spine and pelvis.

1. L4 L5 AND L5 S1 disc prevention (lumbago disc, L4 L5 disc pain, L5 S1, low back pain L5 and S1, herniated disc of L4-L5 and L5-S1), by improving muscle performance abdominal diaphragm couple whose role is to improve the pressure in the abdominal box, in order to reduce disc stress.

2. Reduction of muscle spasms in the spinal column.

3. Protection of the posterior articulars L4 on L5 and L5 on S1, by reducing the lateral rotation flexion, thanks to the abdominal box which increased its pressure and slows down the movements of the posterior articulars during manual handling.

4. Protection of the sacroiliac joints, by improving ligament stability, linked to the girdling of the two iliums in the sacrum.

5. Improvement of the stability of the L4 vertebra on L5, of L5 on S1, of L4 and L5 with iliums, of L5 with the sacrum.

6. Respect for the physiology of movement during manual handling.

The state of the prior art highlighting the problem posed:

Until today, belts have been used as an indication to immobilize the spine to treat pain (patent FR 2,650,239) or to press on painful points (patent

FR 2 589 723 and patent EP 00 77 760).

These are belts for the sick; The restraint is achieved by a large whalebone at the back (to immobilize the lumbar region and the sacrum) and a high elastic band at the front. The rear compression hinders the professional gesture, the elastic at the front slows down the abdominal respiratory work and the compression belt moves during movements; these constraints are in contradiction with the rules of ergonomics.

When bending, during handling, the belt rises, because it is not attached to the pants.

The indication is therefore restraint during work stoppages (in the same way as a neck brace, a reinforced knee brace than a reinforced ankle) and is not intended to protect the lumbar spine during work.

The “orthopedic” belt does not take into account the various pathologies linked to handling, its role is rest of the spine by restraint.

The rules of ergonomics not being respected the handlers use very little the compression belt.

The weight belts are too high. • THE PATHOLOGY :

Manual handling leads to posterior L4-L5 and L5-S1 disc tears ranging from

• disc lumbago, "in lumbago disc,

• disc sciatica,

• herniated disc

• PHYSIOLOGY: Doctor KAPANDJI (articular physiology) explains (among others) that in manual handling the diaphragm and the abdominals, contract synergistically, to increase the pressure in the abdominal lumbar box, thanks to this effect, the tension, lumbar muscles decrease and therefore lower disc compression

• THE WORK BELT:

The work belt must not only respect the physiology of the abdominals and the diaphragm but must improve physiology

I took again the pπncipe of the belts of weightlifting, for this invention,

To improve the muscular role of the abdominal diaphragm which is to increase the pressure, in order to decrease the disc compression and to decrease the intensity of the contraction of the lumbar muscles, the working belt must be inelastic Doctor KAPANDJI, explains that the torque work abdominal diaphragm decreases by 50% at level D12 L1 the compression on the discs, by 30% at level L5 S1 In order to improve the function of posterior disc decompression, at level L4-L5 and L5-S1 (pathological areas , during handling) the work belt rests on a honzontale at the level of L5-S1 (axis of the belt)

By placing the work belt at this level, I reduce the disc compression (muscle couple + work belt, during handling), at level L4-L5 and L5-S1, Indeed, during the effort the descent of the diaphragm, (which makes piston), makes a descent of the abdominal viscera, and the abdominals (the transverse) realize a brake in order to increase the pressure, the working belt comes to improve the muscular output of the couple abdominal diaphragm at level L4-L5 and L5-S1 by clearly improving the brake on swelling (the belt strengthens the function of the transverse) Weightlifters know this propnété and always wear a belt above L3 (L3 corresponds to the size), because they lift the loads on the back straight, during squats or deadlifts According to the invention the belt results in a reduction in the disc stresses L4-L5 and L5-

S1 by an improvement in the muscular yield of the abdominal diaphragm couple, during handling efforts.

• THE PATHOLOGY :

Manual handling results in muscle spasms and strong spinal tension.

The isometric and isometric eccentric contractions during semi-leaning positions are maintained for a long time, disrupting circulation in the spinal muscles, due to an accumulation of waste (lactic acid).

• PHYSIOLOGY:

The physiology of the muscle couple decreases the tension of the spinal muscles and the greater the abdominal diaphragm muscle output is, the more the tension decreases (Doctor KAPANDJI).

• THE WORK BELT:

The work belt according to the invention must respect the physiology of the spinal muscles, but must reduce the power of their contraction, in order to save man during handling; the working belt increasing the physiology of the abdominal diaphragm couple will cause a reduction in the tension of the spinal muscles.

During manual handling, the tension of the spinal muscles is reduced, in proportion to the effort, hence saving muscle energy and at the same time, further reduce disc compression.

• THE PATHOLOGY:

Manual handling can give joint damage L4 on L5 and L5 on S1. These joint injuries are:

• “Structural disturbances with reflex functional consequences” CH DOWNING 1923. These disturbances which can be linked to repeated manual handling, significant efforts with load, postural stresses, and movements of the joints then go so far as to exceed the limits. of their physiology and create lesions which are described in:

- simple lesions of flexion or extension, - combined lesions of type I N.SD.RG.

N.SG.RD. type II F RD SD or F RG SG

E RD SD or E RG SG

NB N = neutrality, SD and SG = right and left side-bending, F = bending, RD and

RG = right and left rotation, E = extension

• PHYSIOLOGY:

The physiology of the abdominal box, brings us a new element during handling, the diaphragm-abdominal couple by contracting will achieve an "abdominal box" which slows the lateral flexion rotation and slows the lateral extension rotation and therefore already naturally protects the posterior joints

• THE WORK BELT:

The work belt according to the invention respects the physiologist of the lumbar spine and reduces the risk of "joint damage" because by increasing the box effect, the belt reduces the joint amplitudes of FLEXION-LATERAL-ROTATION or EXTENSION-

LATERALE-ROTATION, during handling

The work belt according to the invention slows "excess" mobility linked to handling

• THE PATHOLOGY :

Manual handling leads to minor articular lesions of the iliums and especially of the sacrum lesions of which the origin may be primary, they are described in iliac lesions of the posterior ilium left or right, right or left anterior ilium, lesions of the sacral sacrum anterior bilateral, bilateral posterior sacrum, unilateral anterior sacrum, unilateral posterior sacrum, torsional sacrum G / G or D / DG / D or D / G

• PHYSIOLOGY:

The pelvis serves as a point of attachment for the lower limbs that support it, on the other hand it serves as a fulcrum for everything above it All the physiology of an individual harmonizes around the pelvis , thanks to the powerful ligaments which ensure the stability of the sacroiliac joints, also to the power of tendon and muscle insertions Each sacroiliac joint is dependent on ligament tensions, unequal pressures and more or less significant muscular reactions. At the level of the pelvis, two forces seek to balance each other: - an ascending force, - a descending force.

These two forces passing through the two sacroiliac joints. The sacrum plays the role of a platform to absorb these pressures, its aim is to distribute and balance these pressures, to absorb all movements, handling with loads, bad positions in professional activity; the sacro iliac uses its own mobility.

• THE WORK BELT:

The work belt according to the invention by its strapping at the sacroiliac level behind, increases the stability of the sacroiliac muscles during handling; the line of the working belt corresponds to the directions of the sacroiliac ligaments (especially the axile ligament which is one of the most important), moreover when the employee handles increasingly heavier, the stabilizing effect of the two sacroiliacs increases.

Indeed, during efforts in handling, the diaphragm piston inflates the belly in proportion to the effort and as the belt is non elastic the piston effect works in synergy with the belt plus the transverse and the effect of belt increases with l intensity of effort and in proportion to effort.

THE L4 + L5 STABILIZED BELT + THE SACRUM + THE ILIUMS DURING EXERCISE: The rear part of the belt, due to its shape and positioning, considerably improves ligament stability (ilio-lumbar ligaments, sacroiliac ligaments) during exercise, thanks to the belt which increases proportionally.

THE BELT RESPECTS THE PHYSIOLOGY OF THE LUMBAR COLUMN:

The movements of lateral rotation bending, lateral rotation extension, are respected. When walking the work belt respects the pelvic movement of the ilium, going from the posterior ilium to the anterior ilium. RESULT OF ELECTROMYOGRAPHY:

The electromyography of the abdominals confirms that the muscular output of the abdominal diaphragm couple is improved with a working belt during manual handling for a load of 40 Kg lifted on the ground. WORKS CARRIED OUT BY PROFESSOR TOULOUSE, functional exploration department of Rennes Pontchaillou CHR.

In fact, the EMG of the abdominals is less rich with the working belt during the deadlift of a 40 Kg load: the belt strengthens the abdominals and the role of the muscle couple is very improved, with energy savings muscular. These results are perfectly in line with muscular physiology (principle of our physiology: balance, comfort, economy.

RESULT OF ELECTROMYOGRAPHY - DOCTOR POUYET NEUROLOGIST:

For a load lifting on the ground (10Kg, 20Kg, 30Kg, 40Kg) electromyography of a great right and a sacro lumbar mass right at the same time.

CONCLUSION OF THE POUYET INDUSTRY:

The electromyographic tracing is less rich at the level of the abdominal wall with the work belt; there is no significant change in the lumbar muscles.

LOADER RESULTS:

The load is easier to lift because the stability of the lumbar region is significantly improved, thanks to the improvement of the muscular output of the abdominal diaphragm couple.

A FUNCTIONAL PROTECTION AND PREVENTION BELT.

With reference to these drawings:

=> Figure 1 represents the flat view of the men's work belt,

=> Figure 2 represents the profile view of the man's work belt, => Figure 3 represents the belt in a frontal plane, positioned on the lumbar region of a man,

= Figure 4 represents the belt in a sagittal plane, positioned on the lumbar region of a man,

= Figure 5 represents the inner man belt against passers-by, with its fixings, = Figure 6 represents the flat view of the female model,

=> Figure 7 represents the profile view of the female model,

=> Figure 8 frontal plan of the female model,

= Figure 9 sagittal plan of the female model,

=> Figure 10 internal face of the female model, => Figure 11, electromyogram of the abdominals with belt,

=> Figure 12, electromyogram of the abdominals, without belt,

= Lift from the ground, without belt: fig 13A (20Kg), fig 13C and 13E (30Kg), fig 14A and 14C

(40Kg),

=> Lift from the ground with belt: fig 13B (20Kg), Fig 13D and 13F (30Kg), fig 14B and 14D (40Kg),

The men's belt includes: => A rear part (1), => Two branches (2) and (3), = A buckle plastron (4), = A tongue (5),

The belt according to the invention:

= A curve AA which corresponds to the shape of the cone (the rear part of the pelvis) at the line spacing L5-S1; the radius of the circle, on the flat belt, is between 45 cm and

1.10 m. = The branches (2) and (3) are straight and have a length adapted to each size, their height (h2) is between 4 and 8 cm. = * The vertical median axis 00, corresponds to the projection of the spine and thorns of the sacrum.

=> The center 01, corresponds to the line spacing L5-S1. => The rear part (1) has a height (h1), covering the distance from L4 to S3

=> On the upper bitter half (above the axis AA) there are points 6 and 7, corresponding to the posterior edge of the left and right iliac crest = The lower half of the bitter part, below the axis (AA) is composed of a part approaching the horizontal 8 and 9 and a portion 10 on the right and 11 on the left, going up to point M (middle of the distance OL), points 12 and 13 are respectively the middle of OM => The branch (2) is straight, perpendicular to the axis MM, the height h2 of the branch is approximately 5 cm (this height allows the bending of the hips, during the squats in the job),

= The plastron (4) largely covers the buckle on its arπere face and gives a good point of support for abdominal work during efforts, = The buckle or buckle extends over the height (h2) of the belt,

=> The branch (3) is straight, perpendicular to the axis (MM), the height (h2) is identical to the branch (2), the branch (3) has an extension of 20 to 25 cm, which is a pull tab, to put the belt and allows the purchaser of the belt who is gaining weight, to have the "extension" Maintaining the pull and adjustment tab is done by two passers-by passing at the foot of the loop and a loop on the slide

=> The arπère part presents an angleα, compared to the vertical, in a sagittal plane ranging between five and twenty degrees

= There is an inner belt, which performs the counter pass of the pants, so that the belt stays in its place, during handling, the height of the inner belt and compπse between two and four cm in height = There are different sizes - 38-40-42

. .44-46-48 - 50-52-54 => The curvature AA has its smaller radius, for small sizes, the curvature AA has its larger radius for large sizes => Branches (2) and (3 ) are straight

= Points (6) and (7) are closer together for small sizes = »Points (6) and (7) are more apart for large sizes = The distance OL left and OL right, corresponds to the size of l 'buyer = -> (h2) is approximately 6 cm for sizes 48-50-52-54, the buckle being wider, the faceplate is larger The women's work belt includes:

= A rear part (1), => Two arms (2) and (3), = A buckle faceplate (4), => A tongue (5).

The belt according to the invention:

=> An AA curve at L4-L5; the radius of the circle is between 45 cm and 1.10 m. => The branches (2) and (3) have the same curve as AA, so that the belt molds better to the female anatomy and to the physiology of the small pelvis (monthly pelvic congestion).

=> Axis 00 corresponds to the projection of the spine and thorns of the sacrum. = Center 01, corresponds to line spacing L4-L5. = The rear part (1) has a height (h1), covering the distance from L4 to S2.

Compared to the male belt the female belt does not reveal the iliac crests, so that the visceral and vertebral physiology are respected. => The lower half of the rear part below the axis AA is made up of a part approaching the horizontal 8 and 9 and a portion 10 on the right and 11 on the left going up approximately 4 cm, further than point M (middle of the distance OL). => The branches (2) and (3) have the same curve as the rear part (1). The height (h2) of the branches varies between 4 and 7 cm, depending on the size. => The plastron (4) largely covers the buckle on its rear face and gives a good point of support for abdominal work during efforts. => The buckle or buckle extends over the height (h2) of the belt. = -> The branch (3) has a pull tab of 20 to 25 cm; the tongue is held in place by a loop at the foot of the loop and a loop on the slide. => The rear part has an angle α with respect to the vertical, in the sagittal plane between five and twenty degrees. => There is an inner belt, which carries out the counter passing of the pants, the skirt, the dress, so that the belt stays in its place, during handling; the height of the inner belt is between two and four centimeters in height; this inner belt is flush with the upper edge of the belt. = For sizes:

- 36-38-40. 42-44-46

- 48-50-52 => The curve AA has a smaller radius for small sizes. The AA curve has its largest radius for large sizes. => The distance OL left and OL right corresponds to the size of the person. => (h2) is smaller for small sizes and is larger for large sizes.

The material of the man and woman belt must adapt to the pelvic step (for example leather is well suited because it has a lender); the buckle has two barbs for a good distribution of forces (you can use self-gripping or a fantasy).

A few ventilation holes or open spaces to reduce sweating (especially when it is very hot).

The three rules of our physiology:

- Balance

- Comfort

- Economy are respected.

Respect for muscular and visceral joint physiology gives good transparency at the cerebral level (no constraints).

Claims

1) Disc and joint protection belt, for manual handling, non-elastic, characterized in that it has a curved rear part, the central axis of which corresponds to the line between the fifth lumbar vertebra and the first vertebra of the sacrum for men and between the fourth and fifth lumbar vertebrae for women, whose radii of the curve are between 45 cm and 1.10 m depending on the size. The rear part has a height between L4 and S3 (men's belt), between L4 and S2 (women's belt). Two branches (2) and (3) of height (h2) between 4cm and 8 cm, which are straight (men's belt), which are curved

(woman's belt). The rear part is perforated to prevent sweating.

2) Disc and joint protection belt according to claim (1) characterized in that the upper half comprises two points 6 and 7 corresponding to the posterior edge of the two iliac crests (male belt only). 3) Disc and joint protection belt according to claim (1) and (2), characterized in that the lower half comprises a part close to the horizontal, 8 to the right and 9 to the left, then a part 10 and 11 , going up towards the point M on the left and on the right.

4) Disc and joint protection belt according to any one of the preceding claims, characterized by the rear part which has an angle α, with respect to the vertical, in the sagittal plane of between five and twenty degrees.

5) Disc and joint protection belt according to any one of the preceding claims, characterized by a plastron which protects the rear face of the buckle and gives a good point of support for abdominal work during manual handling.

6) Disc and joint protection belt according to any one of the preceding claims, characterized by a pull and adjustment tab for size and effort.

7) Disc and joint protection belt according to any one of the preceding claims, characterized by a few passers-by on the internal face which guide the belt against passers-by.

8) Disc and joint protection belt according to any one of the preceding claims, characterized by a belt against loops whose curve is identical to the axis AA and does not allow the belt to go up or down during handling.

9) Disc and joint protection belt according to any one of the preceding claims, characterized by a loop or buckle which extends over the height h2 of the belt. 10) Disc and joint protection belt according to any one of the preceding claims, characterized by two loops for the pull and adjustment tab; a loop at the foot of the loop and a loop on a slide.