JPH10314307A - Treating device for intermittent positive pressure ventilation therapy - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve wearing or removing performance of a nose mask and safety in wearing by substantially forming a support body out of a fabric with breathability thereof in a specified range and a stretching rate under a specified load in a specified range mask to promote the transpiration and radiation of sweat on skin. SOLUTION: A material composing a support body of a nose mask in a treating device for an intermittent positive pressure ventilation therapy is a flexible fabric and tight application thereof on a head part is necessary. To reduce sultriness in the summer seasons, at least breathability exceeding 60 cc/cm<2> .sec. is necessary for maintaining comfortableness in wearing. On the other hand, the breathability can not be limited expediently viewed from the comfortableness. But it is necessary to apply the stretchability of the fabric in a fixed range, below 360 cc/cm<2> .sec. The stretching rate of the fabric of the support body of the nose mask should be 50-200% under a load of 1.5 Kg/cm. This is necessary to obtain a wearing or removing performance and safety in mounting during the turning on user's side in bed, hence, reducing a pressure that may be felt during the wearing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a treatment device for intermittent positive pressure ventilation therapy. More specifically, the present invention relates to a treatment device for intermittent positive pressure ventilation therapy which is less stuffy even when worn, has no discomfort, and has excellent wearing stability.

[0002]

2. Description of the Related Art In recent years, for patients with acute or chronic respiratory failure, it is necessary to avoid the need for intubation or tracheostomy, to assist ventilation only during nighttime sleep or short time and nighttime during daytime, or to perform intubation ventilation. Intermittent positive pressure ventilation with nasal masks has been used for assisted ventilation during respiratory withdrawal in patients with difficulty withdrawal. This method is mainly used for thoracic disorders with symptoms of hypercapnia caused mainly by alveolar hypoventilation,
COPD, a treatment for diseases such as neuromuscular diseases,
This is a therapy used to complement hypoventilation due to hypotonia in the auxiliary respiratory muscles during nighttime sleep, especially during REM (REM) sleep.

[0003] The respirator nasal mask used in this treatment method needs to cover the entire nose, adhere to the surrounding face, and maintain airtightness. The nasal mask intermittent positive pressure ventilation therapy uses this nasal mask to intermittently apply a positive pressure to a human airway from a respirator to increase alveolar ventilation. Here, in order to maintain the close contact between the nasal mask and the face not only when the person is awake but also during sleep, the structure of the nasal mask and the structure of the support that holds the nasal mask from the head are important. However, the material of the conventional support has low air permeability and tends to be stuffy, so that many patients have eczema under the support in summer use. In addition, since the stretch rate of the material of the support is low, it is necessary to support with excessive pressure in order to obtain sufficient airtightness and wearing stability of the nasal mask. It caused discomfort. Further, if the area of the head covered by the support is too large, heat dissipation from the skin and evaporation of sweat are impeded, leading to the discomfort of the wearer.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems and to improve the air permeability and moisture permeability of a head support of a nasal mask which is a treatment tool for intermittent positive pressure ventilation therapy. Improves the detachability and wearing stability of the nasal mask by promoting the transpiration and transpiration of sweat on the skin, reducing discomfort such as sultry heat and eczema, and improving the stretchability of the support material. As a result of intensive research and development for the purpose of causing the present invention, the present invention has been achieved.

[0005]

That is, according to the present invention, an object of the present invention is to provide a therapeutic device for intermittent positive pressure ventilation therapy comprising a nasal mask and a support for the nasal mask, wherein the support has an air permeability. Intermittent positive pressure ventilation characterized by being substantially composed of a fabric having a rate of 50 to 200% when the load is equivalent to a load of 1.5 kg / 5 cm and has a stretch rate of 60 to 360 cc / cm ² · sec. Achieved by therapeutic treatment devices.

The material constituting the nasal mask support in the therapeutic device for intermittent positive pressure ventilation therapy of the present invention is a flexible fabric such as a knitted fabric, a woven fabric, or a non-woven fabric. In order to reduce the summer heat, the air permeability measured by at least the JIS-L-1096-6.27A method (Fragile method) must be 60 cc / cm ^2.
It is necessary to maintain the wearing comfort for at least sec. More preferably, the air permeability is 100 cc /
When it is at least cm ² · sec, the dissipation of sweat and body heat to the outside air is promoted, which leads to further improvement in comfort. On the other hand, if the air permeability is less than 60 cc / cm ² · sec, the possibility of eczema on the skin due to sweating and stagnation during hot summer nights is significantly increased. The upper limit of the air permeability of the material constituting the nasal mask support of the present invention is not limited in terms of comfort, but the fabric imparts a certain range of stretchability of the fabric and withstands the load as the support. , And thus has certain limits. Thus, the air permeability of the fabric constituting the support is 360 cc / cm ² ·
sec or less, preferably 300 cc / cm ² · sec or less.

The stretch rate of the cloth of the nasal mask support is 50 to 2 when the load is equivalent to a load of 1.5 kg / 5 cm.
It is necessary that the content be 00% to provide detachability and mounting stability when turning over while sleeping, and to reduce the feeling of pressure during mounting as much as possible. The preferred stretch rate of the fabric is 6
0 to 150%.

[0008] Although it depends on the size and shape of the head of the nose mask wearer, when the stretch rate of this support is less than 50% in a general adult, the joint between the nose mask and the head support is removed. In addition to being unable to attach and detach, the nasal mask may be misaligned due to movement or body movement during sleep, hindering the tightness of the nasal mask, or wearing the head support too tightly to avoid it Because of this, the discomfort due to pressure is a problem. The nasal mask head support has an air permeability of 60c first.
It has been stated that it is necessary to be at least c / cm ² · sec, but one means for achieving this air permeability is to use a mesh knitted fabric. A mesh knitted fabric is a knitted fabric in which an opening is formed by means such as needle removal during knitting of a knitted fabric, and breathability is remarkably improved. With the mesh knitted fabric, it is possible to achieve high ventilation according to the opening area, even with a knitted fabric having a ground thickness, in addition to stretchability.

On the other hand, in order to cover a spherical solid such as a head with a two-dimensional flat cloth without wrinkling, a gather is formed on one cloth or a plurality of cloths are stuck together. It is necessary to construct a three-dimensional shape. In the present invention, it is desirable to sew one or several stretch fabrics and stitch them together to form a cap that covers the shape of the head in conformity with the shape of the head. . Here, the coverage area of the head support of the nasal mask will be described. Although the larger the area covered, the more stable the wearing of the nasal mask, the excessively large covered part promotes a feeling of oppression, cramping, and oppression, causing discomfort.

Therefore, head supports having various covering areas were manufactured and subjected to a practical wear test. When the covering area of the head was 300 cm ² or less, many of the wearing patients felt discomfort. It turned out to be difficult. By the way, 300cm ²
In the head support of the nasal mask with a coverage area of more than
It was found that although the wearing stability was good, it was easy to feel discomfort such as oppression and stuffiness and heat.

On the other hand, if the coated surface is too small, the function as a support is impaired, so that the surface area is advantageously 100 cm ² or more, usually preferably 120 cm ² or more. Further, the support of the present invention has a structure such that its end can be attached to a mask. For ease of wearing or removing, compatibility with the shape of the head and stability when wearing,
The support is usually attached to the mask by three to six, preferably four to five ends, which are commercially available as planar fasteners (specifically "velcro fasteners" or "magic tapes"). It is convenient to be connected.

[0012]

The present invention will be described below in detail with reference to examples. Examples 1 to 3 Using polyester 30 denier / 12 filaments and polyetherester stretch yarn 40 denier single yarn,
Using a 28G warp knitting machine, a mesh knitted fabric having a basis weight of 59 g / m ² was knitted. Using this knitted fabric, FIG. 3 (Example 1), FIG.
A support having the shape shown in (Example 2) and FIG. 5 (Example 3) was produced.

Comparative Examples 1 and 2 FIG. 6 (Comparative Example 1) using a double tricot (using a 24G warp knitting machine) using a 66-nylon / cotton blend yarn.
And a support having the shape shown in FIG. 7 (Comparative Example 2).

Comparative Example 3 A support having a shape shown in FIG. 8 was prepared using a tricot using 66-nylon filament yarn.

Evaluation of Actual Wear The supports prepared in Examples 1 to 3 and Comparative Examples 1 to 3 were each applied to the mask shown in FIG. 1 at five end portions as shown in FIG. (Only three of the four ends except the uppermost part) were tested. That is, the results (average values) of the evaluation of the detachability, stability, and comfort by wearing each support by six subjects were shown in the following three stages. ：: good △: normal ×: bad

In Examples 1, 2 and 3, the air permeability, the stretch rate and the head covering area of the mask support were within the specified range of the present invention.
Both the wearing stability and the wearing comfort were good. Here, Example 3 is a support having a three-dimensional structure formed by bonding. However, since the mask support of Comparative Example 1 has a large head covering area, the wearing stability is good, but conversely, the wearing comfort is poor due to the low air permeability of the material. Furthermore, since the stretch ratio of the material is low, the detachability is also reduced. Comparative Example 2 is Comparative Example 1
This is a model that uses the same material as above and reduces only the covering area to 42%, but the air permeability of the material remains low,
There is an improvement in comfort due to the reduced area covered. Lastly, the mask support of Comparative Example 3 has a moderate coverage, although the air permeability and the stretch rate have not reached the specified values, but has a large coverage area, and thus the evaluation of comfort is lowered.

[0017]

[Table 1]

[0018]

According to the present invention, there is provided a therapeutic instrument for intermittent positive pressure ventilation, which has excellent breathability and moisture permeability, and which is easy to attach and detach and has excellent stability and a comfortable wearing feeling when worn.

[Brief description of the drawings]

FIG. 1 is a front view of a nasal mask of a treatment device for intermittent positive pressure ventilation therapy.

FIG. 2 is a sketch drawing in which the mask support of Example 1 is mounted on the nasal mask of FIG.

FIG. 3 is a schematic view of a mask support according to the first embodiment of the present invention.

FIG. 4 is a schematic view of a mask support according to a second embodiment of the present invention.

FIG. 5 is a schematic view of a mask support according to a third embodiment of the present invention.

FIG. 6 is a sketch of a mask support of Comparative Example 1.

FIG. 7 is a sketch of a mask support of Comparative Example 2.

FIG. 8 is a sketch of a mask support of Comparative Example 3.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hook part of planar fastener 2 Loop part of planar fastener 3 Fabric part of support

Claims (4)

[Claims] 1. An intermittent positive pressure ventilation treatment device comprising a nasal mask and a support for the nasal mask, wherein the support has an air permeability of 60 to 360 cc / cm ² · sec and 1.5.
Stretch rate at the time of load equivalent to kg / 5cm load is 50 ~
A treatment device for intermittent positive pressure ventilation therapy, which is substantially constituted by a fabric having 200%. 2. The therapeutic device for intermittent positive pressure ventilation therapy according to claim 1, wherein the fabric is a knitted mesh. 3. The treatment device for intermittent positive pressure ventilation therapy according to claim 1, wherein the fabric has a sewn portion by stitching. 4. The head covering area of the fabric is 100 to 300.
The therapeutic device for intermittent positive pressure ventilation therapy according to claim 1, 2 or 3, which has a size of cm ² .