1. Field of the Invention
The present invention relates to an attachment device with straps for holding a ventilator mask on the head of a user.
2. Description of the Related Art
Attachment devices for ventilator masks are known in the art. In particular, head covering devices are known in a variety of embodiments. They consist of straps that are brought together at the neck and are joined with the mask in such a way that they are fastened to the mask at three points. In this regard, the main concern is especially proper seating of the mask, which is often achieved at the expense of the comfort of the patient. A mask of this type is described in DE 101 58 066.
Also well known are ventilator masks or head masks that essentially surround the chin region in much the same manner as, for example, equestrian riding helmets. The ear and cheek region of the wearer is relieved with this type of design. A ventilator mask that is fastened in this way is described in DE 103 38 169 A1.
The head mask fastening devices or attachment devices known from the prior art are essentially fabricated in such a way that their fit is based on the joining of individual, two-dimensional parts. Weld seams, gluing seams, or other types of seams that result from this joining can be elevated and thus cause irritation or pressure points on the contact surfaces or on points on the head of the wearer.
Proceeding from this prior art, the object of the present invention is to create an attachment device for ventilator masks that is improved with respect to individual physiognomic and functional adaptability.
In accordance with the invention, this object is met by virtue of the fact that the straps are joined with a central section, where at least two strap ends extend away from the central section towards the ventilator mask, and where the central section rests on the head of the wearer and is at least partially adapted to the shape of the wearer's head.
A further object of the present invention is to improve a method for producing an attachment device for fastening a ventilator mask on the head of a wearer in such a way that an attachment device is produced which visually indicates correct placement of the ventilator mask on the head of the wearer. In accordance with the invention, this object is met by virtue of the fact that the ventilator mask is provided with a central section and a system of straps with at least two strap ends, wherein at least two of the strap ends extend away from the central section towards the ventilator mask, the straps are joined with the central section which rests on the head of the wearer, and the central section is preformed, so that it is at least partially adapted to the shape of the wearer's head.
The invention concerns an attachment device for fastening a ventilator mask on the head of a wearer. It includes a central section, which rests, for example, against the back of the wearer's head when the wearer is using the mask, and a system of straps that is joined with the central section. This system of straps holds the ventilator mask by virtue of the fact that the ends of the straps are joined with the mask. The central section is preformed and adapted to the shape of the back of the wearer's head, so that an optimum fit of the attachment device is obtained. As a result of the large contact surface area of the central section, tensile forces that are exerted by the straps and the mask on the head of the wearer are optimally absorbed. Alternatively or additionally to the placement on the back of the head, placement on the chin is also possible. In this case, the central section is adapted to the shape of the chin.
One specific embodiment of the invention concerns the preformed central section, which is made of a textile fabric that is soft and comfortable and pleasant to wear on the scalp and facial skin and at the same time is suitable for being permanently adapted to the shape of the wearer's head by performing. An advantageous aspect of this is that individual attachment devices are obtained. The shape of the central section can be individually adapted to the shape of the wearer's head. Once its has been thermally preformed, the central section permanently retains the desired geometry and yet keeps its flexibility, since the straps can be variably adjusted. This provides the advantage that the mask can be worn pleasantly and comfortably.
In another specific embodiment, the device is made from a single tubular piece of textile that has likewise been permanently thermally preformed, so that seams and joints in the area of the back of the head and on the cheeks and temples of the wearer are completely avoided, which offers the advantage that wearing the mask does not produce any pressure points or friction points on the head of the wearer.
In addition, some specific embodiments of the invention pertain to an attachment device produced from several parts, such that the various parts of the attachment device are operatively connected with one another in such a way that different fits are produced. The attachment device produced in this way has the advantage of great flexibility. Either the attachment device can be adapted to several wearers, or one and the same wearer can optimally adapt the attachment device to his individual physiognomy according to his varying situation.
In accordance with another specific embodiment of the invention, the attachment device has a central section with a recess that constitutes a basic geometric form. Alternatively, a basic geometric form can be mounted or applied here in the vicinity of the attachment device. This then also serves as a tensile force indicator. This results in the advantage that when tensile force is applied, this basic geometric form is deformed in such a way that the deformation can be used as a measure of the applied tensile force. If too much tensile force is applied, the basic geometric form is deformed, which induces the wearer to loosen the straps in such a way that the deformation is reversed until, ideally, the original basic geometric form is restored.
Other embodiments of the invention concern methods for producing the above-described attachment device of the invention. One method in accordance with the invention concerns the fabrication of the attachment device from a single part. This offers the advantage of a seamless or almost seamless attachment device.
Another method in accordance with the invention concerns the production of the attachment device with the use of a thermal performing process or molding. This has the advantage that the section of the attachment device produced by means of molding maintains the permanently preformed geometry. Methods in accordance with the invention include the individual measurement of a wearer's head.
Further embodiments of the invention and some of the advantages associated with these and other embodiments are clarified and made more understandable by the following detailed description and the accompanying drawings. Objects or parts illustrated in the drawings that are essentially the same or very similar are provided with the same reference numbers.
The various features of novelty which characterize the invention are pointed out with particularity in the claims annexed to and forming a part of the disclosure. For a better understanding of the invention, its operating advantages, specific objects attained by its use, reference should be had to the drawing and descriptive matter in which there are illustrated and described preferred embodiments of the invention.
In the drawing:
a is a three-dimensional view of an attachment device that is produced as a single piece from a tubular section and has one recess.
b is a three-dimensional view of an attachment device that is produced as a single piece from a tubular section and has two recesses.
c shows an alternative embodiment of the three-dimensionally illustrated, single-piece attachment device from
d is the three-dimensional view of an attachment device that is produced as a single piece from a tubular section, wherein four strap ends are produced by cutting vertically through an upper transverse web and a lower transverse web.
a is a side view of a wearer with the attachment device in place.
b is a three-dimensional view of a wearer with both the ventilator mask and attachment device in place.
a is a schematic front view of a two-part attachment device arranged in such a way that four strap ends are made available for securing the ventilator mask.
b shows the attachment device of
c is a top view of an attachment device produced from two symmetric blanks and an inserted middle section.
a is a top view of a blank for producing an attachment device with four strap ends, and
c shows an alternative geometry from that of the attachment device shown in
d is a schematic top view of an attachment device produced from two symmetric blanks, wherein the blanks are joined with each other by a lace.
a is a schematic top view of a blank and a central section for forming an attachment device.
b is a top view of the attachment device produced from two symmetric blanks and a central section according to
c shows a blank and a central section for forming an attachment device.
d is a top view of the attachment device produced from two symmetric blanks and a central section according to
e shows a blank and a central section for forming an attachment device.
f is a top view of the attachment device produced from two symmetric blanks and a central section according to
The explanations which follow shall define the terms used in the specification and the claims.
A “ventilator mask” is a ventilating device for supplying respiratory gas via the nose and/or mouth. The ventilator mask can be designed accordingly as a full mask or as a partial mask, which covers only the nose and is designated a nasal mask.
An “attachment device” is a device that serves to position and secure the ventilator mask on the face of the user. One of the functional properties of the attachment device is that it makes it possible to secure the mask on the face with a sufficiently tight seal that gas flowing into or out of the mask does not escape to the outside through the sealing edge of the mask but rather flows in and out only through the gas supply and gas discharge devices provided for this purpose.
The “central section” of an attachment device of the invention is defined as the area of the attachment device that rests against the back of the wearer's head. It can extend over several parts that form the attachment device and can have different shapes and sizes.
A “preform” is a workpiece on which a shaping technique is used to impress a permanently retained three-dimensional geometry on the initially two-dimensional workpiece. Well-known shaping techniques include especially thermal shaping techniques, such as the hot-pressing method or molding. It lends permanent dimensional stability to the workpiece.
A “tensile force indicator” is a visual indicator function that makes it clear how much force is acting on the attachment device at the back of the head.
The specific embodiments of the present invention involve, for example, attachment devices with which the ventilator masks, such as masks for CPAP therapy (continuous positive airway pressure therapy) for the treatment of apnea, can be fastened on the head.
All of the attachment devices of the invention have a system of straps with at least two, but usually more than two, strap ends, with which the ventilator mask can be securely placed on the head of the wearer by three-point, four-point, or five-point fastening. The attachment device basically has a central section, which is joined with a system of straps in such a way that the ends of the straps are directed away from the central section, which rests on the head of the wearer, and towards the ventilator mask. The central section has a key position, because the tensile forces arising from the mask become focused in the central section. Therefore, it is at least partially adapted to the shape of the wearer's head, so that the best possible fit of the attachment device is obtained, and thus the ventilator mask can develop full functionality but without being felt as uncomfortable while being worn for long overnight periods and without causing friction points. The central section that rests on the head of the wearer can have different sizes in different embodiments.
The attachment device illustrated in
Straps—parts three and four—with strap ends 3 are attached to the areas of the central section 2 near the temples. Each of these strap ends 3 is also joined with itself to form a loop 12. There are a total four loops 12. They are provided for the purpose of holding corresponding fastening devices on the ends of the straps or directly on the ventilator mask.
The strap material in the present case is sewn onto the central section 2. It also functions as a friction fastener, so that when the strap ends are passed through a fastening device, e.g., an eye, provided on the ventilator mask, and are then bent backwards, a friction joint is produced. The ventilator mask is thus secured in its position on the wearer's face.
Due to the large contact surface area between the central section 2 and the back of the head, the attachment device comes to rest smoothly against the head without any pressure points. The straps fastened to the central section 2 are made of soft textile material. They absorb the tension of the mask without provoking pressure points and friction.
The attachment device shown in
The strap ends shown in
In principle, the fastening devices of the attachment device can comprise more than one part. In this case, one part, for example, a clip or hook, can be engaged by the loop and remain there, while a second part, i.e., the counterpart of the clip or hook, is located on the mask. To secure the mask on the face, it is then merely necessary to join the first parts with the corresponding second parts.
The attachment devices of the invention can be made of textile material. The textile materials can be natural or synthetic fabrics or mixtures of the two. Finally, it is also possible for the attachment device to consist wholly or partly of natural or synthetic elastomers. Thus, it is possible, for example, for the central section, which fits against the back of the head, to be made of a washable natural textile, while the system of straps that rests against the chin or forehead can be made of a plastic or polymer, which, advantageously, can be easily cleaned by quickly wiping it. This has been found to be advantageous especially because nighttime sweating or salivation do not then make it necessary to wash the whole attachment device.
In the present case, the recess 7′ has the shape of a large ellipse that extends from one ear to the other and exposes the area from the forehead to the chin. A transverse web of material is left at the level of the chin and at the level of the forehead. If the transverse webs are cut vertically, four strap ends 3 are obtained, as illustrated, for example, in the embodiment shown in
The attachment device shown in
The attachment devices shown in
The attachment device of the invention can be constructed with two parts or multiple parts.
The connection between the two parts 14 and 15 is produced by passing the strap end 13 of the first part 15 through the strap loop 5 of the second part 14, as indicated by arrow a in
The joining of the parts 15 and 14 results in an attachment device with four strap ends 3, which can be passed through eyes provided on the ventilator mask in order to secure the ventilator mask on the face of the wearer. Instead of direct fastening to the mask by means of eyes, the two-part or multiple-part systems described above, such as clips, can be used. How far the strap ends are pulled through the associated eyes can be flexibly designed. This has the advantage that the wearer of the ventilator mask can adapt the mask to his physiognomy to ensure comfortable and functional seating of the mask during the night.
The illustrated combination of two parts can be used modularly, as is apparent from
a to 7c also show an attachment device produced from two parts.
a to 9e also show attachment devices that consist basically of two or three parts. The attachment device illustrated in
The embodiment shown in
The parts used in
In principle, the blanks 15″ can also be produced by die cutting or other methods.
The parts for producing the attachment devices according to
The attachment devices illustrated in
The strap shown in
The attachment devices illustrated in
a to 11h show attachment devices with four strap ends 3. The central sections 2, which are identified by broken lines, have a different design in each case.
In another advantageous embodiment, as shown in
To join the attachment device with the ventilator mask, it is possible, for example, to provide the ends of the straps with a fastening device, as shown in
As an example,
b shows a fastening device designed as a snap-in locking device 23, in which the latch 28 of the first part 25 has been engaged with the closer opening of the second part 26, so that the other openings 27 are available for passing the strap ends 3 through them.
c shows a fastening device with a design that is similar to but shorter than the design shown in
The projections 24 present in all of
To achieve optimal adaptation of the geometry of the preformed central sections of the attachment devices in accordance with the invention to the head of the wearer, the geometry of the head can be determined, for example, by a scanning method, and then electronically stored and processed. The data obtained in this way can then be used to carry out the performing process. After performing processes, especially thermal processes, such as the well-known process of molding, have been completed, the molded part remains permanently three-dimensionally deformed. This results in a dimensionally stable attachment device that can withstand even frequent washing cycles. Well-known types of molding apparatus already provide for the recording and processing of the necessary data with respect to the shape to be molded; they are already well known to those skilled in the art.
While specific embodiments of the invention have been described in detail to illustrate the inventive principles, it will be understood that the invention may be embodied otherwise without departing from such principles.
Number | Date | Country | Kind |
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10 2006 050 725.8 | Oct 2006 | DE | national |