CZ6518U1 - Fixing means - Google Patents

Description

Technical field

The technical solution relates to a fixation device - a splint or mattress, designed especially for gentle stabilization and fixation of the human or animal body eg in fractures, examinations or surgical interventions.

Background Art

Nowadays, in addition to the classical fixation means, the so-called vacuum fixation splints and mattresses are known, which are many times useful means for gentle stabilization and fixation of the body, based on the principle of morphology of compressible materials. The principle is that the bulk material in the enclosure has the ability to adapt to the body shape in any position. After shaping the fixation plate, respectively. the mattress to the desired shape is then evacuated with the closed bulk material and the initially loose polymer is reinforced to form a compact body impression. By discharging air into the evacuated space, the polymer filling becomes loose again.

Well-known vacuum fixation splints and mattresses from individual manufacturers usually only differ:

- shape

- used packaging or even bulk material

- the type of valves and the evacuation means used.

From the technical point of view, the material of the packaging, which closes the bulk material and the solution of the valves for evacuation of the inner space of the packaging, is essential. In this respect, it should be noted that the solutions of existing vacuum fixing plates and mattresses cannot be considered optimal. Classic foil materials, event. conventional polymeric coated fabrics do not guarantee to the requisite air impermeability or bond strength (most often circumferential welds) of the package. They are also not optimal in terms of the fixative properties.

Similarly, the existing valve design resembling conventional metal valves for gas closures and their not always tightly sealed to the casing is similar. The essence of the technical solution

In order to overcome the above-mentioned drawbacks of the prior art, the fixing means according to the present invention contributes. This fixation means, like the existing fixation splints and the mattress, is formed by a sheet of flexible material which closes at least part of its internal volume with bulk material and is provided with at least one vacuum valve to evacuate air from the interior of the package containing the bulk material, possibly also with another valve pressurized to inflate further, respectively. other separate interior spaces of the package.

-1CZ 6518 Ul

The essence of the technical solution is that the flat flexible material of the package is a textile material provided with at least a double base polyurethane coating and a coating of polyvinyl chloride, loose material enclosed in the inner space of this package is a lightweight polymer with a bulk density of 40 to kg / m ³ with antistatic treatment and at least one vacuum valve, optionally also at least one overpressure valve, is housed in a plastic sleeve that is airtightly bonded to the packaging material from the inside.

Furthermore, it is advantageous if the bulk material inside the package is housed in separate, separate chambers of an auxiliary inner container formed by stitching at least two layers of flexible sheet material of the inner package with stitches at a distance of 20 to 30 mm, and further at intervals given by integer multiples of that distance wherein the distance is proportional to the total thickness of the fixation plate.

In another advantageous so-called two-chamber design, combining a substantially vacuum and overpressure plate in one product, a polymeric film-based interlayer is formed inside and attached to the inside of the package to form two separate spaces - a vacuum chamber with a vacuum valve and a plenum chamber. pressure relief valve.

From the point of view of tightness, it is advantageous if the plastic sleeve is for receiving a vacuum or a vacuum. I of the pressure relief valve on its inner cylindrical surface is provided with a sealing ring.

The plastic sleeve together with the vacuum valve may be covered with a textile backing from the inside of the packaging enclosing the bulk material.

Regarding the design of the valves, the vacuum valve is preferably formed by a body and a cap which are connected to each other by a screw connection and sealed by a seal, wherein a membrane with a cut-out flap is detachably attached to the bottom of the lid and a locking button is located on the top of the lid.

The pressure relief valve is also preferably formed by a body and a lid which are connected to each other by a screw connection and sealed by a seal. Inside the valve body is a releasably fastened diaphragm with a cut-out flap and on the upper part of the lid there is again a locking button.

The aforementioned combination of material composition and structural design of the fixation means, respectively. its individual parts largely optimizes its utility properties. The multilayered polyurethane plug increases the adhesion of the polyvinylchloride textile and thus the quality of the high frequency peripheral weld of the package. The weld then has higher strength and durability.

The use of a loose bulk polymer with a high bulk density and with antistatic treatment guarantees high resistance of the polymer to pressure deformations and thus an increase in the functional properties of the fixing means.

-2CZ 6518 Ul

An embodiment in which the particulate polymer is disposed in separate, separate chambers of the auxiliary inner shell allows for easy and effective application of the compositions even in a non-horizontal position. At the same time, it significantly increases the fixation strength of the composition used.

The use of the above-mentioned valves ensures long-term vacuum maintenance for vacuum fixing plates and mattresses, effective protection against spontaneous opening, resistance to damage in extreme conditions, easy and simple handling.

The connection of the coated fabric with the plastic sleeve is firm and airtight.

BRIEF DESCRIPTION OF THE DRAWINGS

To illustrate the nature of the technical solution in greater detail, the attached drawings, where:

FIG. 1 is a cross-sectional view of a vacuum fixing means with loose bulk material and a vacuum valve;

FIG. 2 is a sectional view of a vacuum fixation means with a vacuum valve and a bulk material disposed in the chambers of the auxiliary container;

FIG. 3 is a cross-sectional view of a two-chamber vacuum-pressure fixative with free-flowing bulk material;

FIG. 4 is a cross-sectional view of a two-chamber vacuum-pressurized fixation means with bulk material disposed in the chambers of the auxiliary container;

Fig. 5 - Connection detail of the plastic valve sleeve to the housing; Fig. 6 is a sectional view of a vacuum valve; Fig. 7 is a sectional view of a pressure relief valve; Fig. 8 - detail of the valve diaphragm.

Example 1

The 1-chamber (vacuum) fixing means shown in Figures 1 and 2 is formed by a wrapper 1 of textile material provided with a double base polyurethane coating and a coating of polyvinyl chloride. Straight in the package 2 (see FIG. 1) or in separate chambers of the auxiliary inner container 6 formed by stitching two layers of polyamide fabric with stitches at a distance of 25 mm and then at intervals given by integer multiples of this distance (see FIG. 2). bulk material 2 is stored. This material is expanded polystyrene with a bulk density of 40 to 90 kg / m with antistatic particle treatment. A vacuum valve 2 is housed in a plastic sleeve 5 which is welded to the shell material 2 ^{by the} ring 9 of plasticized polyvinyl chloride (see detail in FIG. 5) from the inside, and a plastic sleeve 5 is on its inner cylindrical surface (for insertion). valve) is provided with a sealing ring 7.

In the arrangement with leveled using loose bulk material 2 of Fig. 1 is a plastic sleeve 5 together with the vacuum valve 2 ^e j ² inside the casing 2 is covered textile Washer 8.

-3CZ 6518 Ul

The vacuum valve 2 (see FIG. 6) is formed by a body 13 and a cap 14. which are connected to each other by a screw connection and sealed by a seal 15 (sealing ring). A membrane 16 with a cut-out flap 17 is attached to the lower portion of the cap 14 by means of 2 screws 19 with washers 20 (the detail of the membrane is shown in FIG. 8). A locking button 18 is then provided on the top of the cap 14.

Example 2

In the two-chamber (vacuum-pressurized) fixing means - see FIGS. 3 and 4, an intermediate layer 10 on the basis of a plasticized PVC foil is placed with it and circumferentially connected thereto, forming two separate spaces - a vacuum chamber 11 with bulk material and a vacuum a valve 2 ^{and a} plenum 12 with a relief valve 4.

The material of the casing 1, the bulk material 2, the construction of the vacuum valve 2 and the connection of the two valves with the casing by the plastic sleeve 5 are identical to Example 2 ·

Also alternatives for depositing bulk material 2 directly in package 2 (see FIG. 3) or in separate chambers of auxiliary inner package 6 (formed by stitching two layers of polyamide fabric with stitches at a distance of 25 mm) and then at intervals given by integer multiples of that the distances (see Fig. 4) are analogous.

The pressure relief valve 2 (see FIG. 7) is formed by a body 13 and a cap 21 which are connected to each other by a screw connection and sealed by a seal 15 (sealing ring). A diaphragm 16 with a cut-out flap 17 is attached to the body 14 by means of 2 screws 19 with washers 20 (the detail of the diaphragm is shown in FIG. 8). A locking button 18 is then provided on the top of the cap 14.

Claims (9)

PROTECTION REQUIREMENTS 1. A fixing means, in particular for gentle stabilization and fixation of a human or animal body, comprising a package of sheet compliant material which encloses at least a portion of its interior bulk material and is provided with at least one vacuum valve to evacuate air from the interior of the bulk material containing bulk material. eventually also by another pressure relief valve for inflating the next, resp. further separated inner compartments of the container, characterized in that the sheet compliant material of the container (1) is a textile material provided with at least double base polyurethane coating and a coating of polyvinyl chloride, the bulk material (2) enclosed in the inner space of the container (1) having a bulk density of 40 to 90 kg / m ^{1 * 3} with antistatic particle treatment and at least one vacuum valve (3) or at least one pressure relief valve (4) is housed in a plastic sleeve (5) which is airtightly connected from the inside to the packaging material (1). -4GB 6518 Ul Fixing means according to claim 1, characterized in that the bulk material (2) is contained within the container (1) in individual, mutually separated chambers of the auxiliary inner container (6) formed by stitching at least two layers of the flexible sheet material of the inner container (6). ) stitches at a distance (s) of 20 to 30 mm and further at intervals given by integer multiples of this distance (s), the distance (s) being proportional to the total thickness (t) of the fixative. Fixing means according to claim 1 or 2, characterized in that an intermediate layer (10) based on a polymer foil, which forms two separate spaces - a vacuum chamber (11) with a vacuum valve, is mounted and connected circumferentially inside the package (1). (3) and a plenum chamber (12) with a plenum valve (4). Fixing means according to claim 1, characterized in that the plastic sleeve (5) is provided with a sealing ring (7) on its inner cylindrical surface. Fixing means according to claim 1, characterized in that the plastic sleeve (5) together with the vacuum valve (3) is covered by a textile backing (8) from the inside of the container (1) enclosing the bulk material (2). Fixing means according to claim 1, characterized in that the vacuum valve (3) is formed by a body (13) and a cap (14) which are connected to each other by a screw connection and sealed by a seal (15), a diaphragm (16) with a die-cut flap (17) is detachably connected and a locking button (18) is placed on the upper part of the lid (14). Fixing means according to claim 1, characterized in that the pressure relief valve (4) is formed by a body (13) and a cap (14) which are connected to each other by a screw connection and sealed by a seal (15), the diaphragm (16) is detachably attached with the die-cut flap (17) and a locking button (18) is placed on the upper part of the lid (14). Fixing means according to claim 6, characterized in that the body (13) and / or the cap (14) of the vacuum valve (3) is made of a polymeric material. Fixing means according to claim 7, characterized in that the body (13) and / or the cap (14) of the pressure relief valve (4) is made of a polymeric material. 7 drawings