WO2018103813A1

WO2018103813A1 - Multi-part respiratory mask, associated nose connection element and associated combination of a tube connection element and of a coupling element

Info

Publication number: WO2018103813A1
Application number: PCT/EP2016/079736
Authority: WO
Inventors: Liselotte Werner; Julia Weishäupl; Paul SCHMITGEN
Original assignee: Medin Medical Innovations Gmbh
Priority date: 2016-12-05
Filing date: 2016-12-05
Publication date: 2018-06-14

Abstract

The present invention creates a multi-part respiratory mask (1) to support the respiration of a patient, comprising an elastic nose connection element (3) having a nose space (R) for receiving, at least in some sections, the patient's nose and a receiving space (A) bordering thereon for receiving a rigid coupling element (2); a rigid y-shaped tube connection element (1) having a first branch (la) with a gas inlet channel (Kl), a second branch (1b) with a gas outlet channel (K2) for connecting a gas flushing device and a third branch (1c) for connecting the rigid coupling element (2); and the rigid coupling element (2), in which the third branch (1c) of the tube connection element (1) is rotatably locked and which is also clamped in a non-rotatable manner in the receiving space (A) of the nose connection element (3).

Description

Multi-part respiratory mask, associated nose connection element and associated combination of a hose connection element and a coupling element

The present invention relates to a multi-part respiratory mask for supporting the breathing of a patient, in particular a respiratory mask for premature babies and toddlers, as well as an associated nose connection element and an associated combination of a hose connection element and a coupling element.

Respiratory masks are used, among other things, for breathing support in intensive care units. These respiratory masks are designed in different sizes and shapes for the typical nasal shapes, so that essentially a form-fitting respiratory mask is available for each nasal shape. The respiratory mask has a connection area for connection to a respiratory pump. A T-shaped adapter piece connects the connection area with two tubes of the ventilation pump for the supply and removal of respiratory gases. The ventilation pump is permanently active so that a continuous flow of air flows through both hoses.

The connection tube between the connection area of the respiratory mask and the branch of the T-shaped adapter piece is flushed by the active breathing of a patient. When breathing in, air flows from the ventilation pump through the connection tube into the ventilation mask. When exhaling, the lung forces the spent air through the connection tube towards the respiratory pump against the air pressure of the ventilation pump, where it is entrained by the continuous air flow. In such. When breathing in, the patient breathes the used air left in the connection tube after the last exhalation. In premature babies and infants, the lung volume is low, as well as in patients with lung damage. The proportion of inhaled spent air is not negligible in such patients. The impending lack of oxygen is compensated by increasing the oxygen content in the respiratory gases.

The use of such a respiratory mask, therefore, requires determining the patient's lung volume to adjust the oxygen content individually with respect to the air consumed in the connection tube. The use of such respiratory masks is therefore very complicated.

Furthermore, in such respiratory masks the connection area, the T-shaped adapter piece and the hoses are rigidly connected. As the patient moves, a tensile load may be applied to the tubing causing the respiratory mask to no longer be tight against the patient's nose. The functionality of the respiratory mask is then no longer guaranteed.

Respiratory masks are known for example from US 2006/0032500 AI, US 2005/0165334 AI and EP 2 428 244 AI.

On this basis, it is an object of the present invention to provide an improved multi-part respiratory mask, which has a stable structure and at the same time a good adaptability to the patient and high reliability.

This object is achieved by a multi-part respiratory mask with the features of patent claim 1, an associated Nose connection element with the features of claim 11 and an associated combination of a hose connection element and a coupling element with the features of claim 14.

Accordingly, a multi-part respiratory mask for respiratory support of a patient is provided with an elastic nasal connecting element with a nasal cavity for at least partially receiving the nose of the patient and an adjacent receiving space for receiving a rigid coupling element; a rigid y-shaped hose connection element having a first branch with a gas inlet channel, a second branch with a gas outlet channel for connecting a gas purging device and a third branch for connecting the rigid coupling element; and the rigid coupling element, in which, on the one hand, the third branch of the hose connection element is rotatably locked and which, on the other hand, is non-rotatably jammed in the receiving space of the nose connection element.

By this structure, a multi-part respiratory mask can be created, which has a soft, elastic nasal connecting element, which can be applied sealingly against the patient, rigid pivotal elements, realized by the coupling element and the hose connection element, ensure a high level of functional reliability. Due to this rotatability of the hose connection element with respect to the coupling element, the gas outlet and the gas inlet can follow a movement of the patient, whereby connection tubes between the ventilation mask and the gas purging device can be kept draft-free. This ensures a secure fit of the respiratory mask on the patient's nose. The non-rotatable clamping of the coupling element in the Nasenanschlusselement also increases the reliability because the nasal connection element can not detach from the coupling element and also the gas opening of the coupling element can not be closed by a movement of the patient, and further reduces the volume of spent breathing gas in the anteroom in front of the nose to a nearly negligible value.

Advantageous embodiments and further developments of the respiratory mask are specified in the subclaims and the embodiments.

According to a preferred embodiment, the y-shaped hose connection element has an inner dividing wall which continuously separates the gas inlet duct and the gas outlet duct in the first, second and third branches. This further reduces the volume of the vestibule.

According to a further preferred embodiment, the coupling element has a hollow cylindrical area for receiving the third branch and an adjacent thereto hollow spherical area with a gas opening for clamping in the receiving cavities of the nasal connection element. So you can easily on the one hand a hinge joint and on the other hand a

Realize clamping connection.

According to a further preferred embodiment, the third branch of the hose connection element extends in the hollow-cylindrical region of the coupling element as far as the hollow-spherical region. This also further reduces the volume of the vestibule. According to a further preferred embodiment, the third branch of the hose connection element has outer ribs which are latched to corresponding inner ribs of the hollow cylindrical region of the coupling element. Thus, a simple locking mechanism can be realized.

According to a further preferred embodiment, the hollow-spherical region has a first projection, which is mounted in a corresponding groove of the receiving space. This is how a turnstile can be realized.

According to a further preferred embodiment, the hollow-spherical region has a second projection, which is supported on an inner wall of the receiving space. This further increases the security of the connection between the nose connection element and the coupling element.

According to a further preferred embodiment, the nose connection element has a first region with a coupling opening, through which the coupling element can be inserted into the receiving space for clamping, and has a second region adjacent thereto with a nose opening, the coupling opening and the nose opening are arranged substantially perpendicular to each other. This geometry is anatomically advantageous.

According to a further preferred embodiment, a carrying strap connecting element is provided, which has an insertion opening, through which the first region of the nosepiece element is inserted, wherein the carrying strap connecting element is held non-rotatably between the coupling element and the second region of the nose connecting element. In this way, the carrying strap connection element can be separated from the nose connection element and made correspondingly more stable. According to a further preferred embodiment, the carrying strap connecting element has a first carrying belt connecting region and a second carrying belt connecting region, which are connected to one another via a connecting web region, the first carrying belt connecting region having the insertion opening. Thus, an effective breakpoint arrangement can be created with a plurality of breakpoints distributed over the patient's face.

The present invention will be explained below with reference to preferred embodiments and the accompanying drawings. In the drawing show:

Fig. La) - d) show various views of a preferred embodiment of a composite multi-part respirator according to the present invention, and Fig. 1a) shows a perspective view; Fig. Lb) is a front view, Fig. Lc) is a back view and Figure ld) is a side view.

Fig. 2 is a perspective view of the various

Elements of the multi-part respiratory mask according to Fig la) -d) in the disassembled state;

3a), 3b) detailed views of the hose connection element of the multi-part respiratory mask according to FIG. 1a) -d), specifically FIG. 3a) in cross-section and FIG. 3b) in rear view;

Fig. 4a), b) detailed views of the coupling element of the multi-part respiratory mask according to Fig la) -d), and Although Fig. 4a) in a perspective view and Fig. 4b) in cross section; and

5a) - c) detailed views of the nasal connecting element of the multi-part respiratory mask according to FIG. 1a) -d), FIG. 5a) in perspective view, FIG. 5b) in cross section and FIG. 5c) in rear view.

In the figures, the same reference numerals designate the same or functionally identical elements.

Figures la) - d) show various views of a preferred embodiment of a composite multi-part respiratory mask according to the present invention, and Figure la) is a perspective view; Fig. Lb) is a front view, Fig. Lc) is a back view and Fig. Ld) is a side view.

In Fig. La) - lb) reference numeral 100 denotes a respiratory mask, which consists of a hose connection element 1, a

Coupling element 2, a nose terminal element 3, and a strap connecting element 4 is composed.

The hose connecting element 1, the coupling element 2, and the carrying belt connecting element 4 are made of a relatively rigid material, such as Teflon or a similar

Plastic, manufactured to ensure their stability. The nose connection element 3 is made of a soft, elastic material, preferably silicone o.Ä. The elasticity of the nose connecting element 3 allows a good ANPAS ^"sung to the face of a patient (not shown). The nose connection element 3 has a nose space R for at least partially receiving the nose of the patient and an adjacent receiving space A for receiving the rigid coupling element 2.

The rigid Y-shaped hose connection element 1 has a first branch la with a gas inlet channel Kl, a second branch 1b with a gas outlet channel K2 for connecting a (not shown) gas purging device and a third branch lc for connecting the rigid coupling element 2.

The rigid coupling element 2 is on the one hand rotatably locked with the third branch lc of the hose connection element 1 and on the other hand non-rotatably jammed in the receiving space A of the nasal connection element 3. The entrapment can be realized by the rubber elasticity of the nasal connection element 3 via a correspondingly dimensioned coupling opening 3c.

The carrying strap connecting element 4 has a semicircular insertion opening 4d, through which a first, beak-shaped region 3a of the nasal connecting element 3 is inserted, which likewise has a semicircular cross section.

The carrying belt connecting element 4 furthermore has a first belt connecting region 4a and a second belt connecting region 4c, which are connected to one another via a connecting web region 4b.

The first belt connecting portion 4a has the semicircular insertion hole 4d in this example. With such a structure, the carrying belt connecting member 4 is non-rotatably supported or clamped between the coupling member 2 and a second portion 3b of the nose terminal member 3 having a nose opening 3f. The coupling opening 3c and the nostril 3f are arranged substantially perpendicular to each other.

Reference numerals 3d and 3e denote optional reinforcing ribs of the nose terminal element 3.

The first belt connecting portion 4a has two holes for carrying straps in the example shown, whereas the second belt connecting portion 4c has three holes 40 for carrying straps. In this way, the strap connection element 4 can be decoupled from the nose connection element 3 and stored stable and provided with a corresponding arrangement of holes 40 which define attachment points or stopping points in the region of the patient's face.

The coupling element 2 has a hollow-cylindrical region 2 a and a hollow-spherical region 2 d adjoining thereto with a gas opening OE which, in the assembled state, is directed onto the nasal space R. Reference numeral 2d denotes an (optional) reinforcing portion between the hollow cylindrical portion 2a and the hollow spherical portion 2b.

With particular reference to FIG. 1b), a groove N1 is provided on the inner wall W of the nasal connection element 3, in which a first projection AI of the hollow spherical portion 2b engages, so that twisting of the hollow spherical portion 2d in the receiving space A is prevented, which undesirably prevents a closure could cause the gas opening OE.

As shown in Fig. Lc), the hollow spherical portion 2b in addition to a second projection A2, which is supported on the inner wall W of the nasal connection element 3, so that a release of the coupling element 2 can be prevented even better from the nasal connection element 3. Fig. 2 shows a perspective view of the various elements of the multi-part respiratory mask according to Fig. La) -d) in the disassembled state.

As shown in FIG. 2, the respiratory mask 100 can be broken down into the four mentioned parts hose connection element 1, coupling element 2, nose connection element 3 and carrying strap connection element 4. In this context, it should be mentioned that the latching connection between the hollow cylindrical region 2 a and the third branch 1 c of the hose connection element 1 can be made more difficult to release than the connection between the hollow spherical region 2 b and the receiving space A of the nose connection element 3.

3a), 3b) show detailed views of the hose connection element of the multi-part respiratory mask according to FIG. 1a) -d), namely FIG. 3a) in cross-section and FIG. 3b) in the rear view.

As shown in FIG. 3 a), the hose connection element 1 has an inner dividing wall T, which continuously divides the gas inlet duct K 1 and the gas outlet duct K 2 in the first, second and third branches 1 a, 1 b, 1 c, thus minimizing the volume of the antechamber hold.

The third branch 1c of the hose connection element 1 has outer ribs R1, R2, R3 in ring form, which are latched to corresponding inner ribs R4, R5, R6 of the hollow cylindrical region 2a of the coupling element 2.

In the latched state, the third branch 1c of the hose connection element 1 extends in the hollow cylindrical region 2a of the coupling element 2 as far as the hollow core, on the example shown. gel-shaped area 2b, which further reduces the volume of the vestibule.

4a), b) show detailed views of the coupling element of the multi-part respiratory mask according to FIG. 1a) -d), FIG. 4a) in a perspective view and FIG. 4b) in cross-section.

In Fig. 4a), b), the structure of the coupling element 2 is shown in detail, in particular the arrangement of the first projection AI and the second projection A2, and the insertion opening 2c for the hose connection element 1 and the line course in the hollow spherical portion 2b, which in the connection Angled at the inserted hollow cylindrical portion 2a through the gas opening OE into the nasal cavity R, to be directed directly at the nose of the patient.

5a) -c) show detailed views of the nasal connecting element of the multi-part respiratory mask according to FIG. 1a) -d), FIG. 5a) in a perspective view, FIG. 5b) in cross section and FIG. 5c) in a rear view.

In particular, in Fig. 5a) - c) at the nostril 3f sealing lips LI, L2 can be seen, which further improve the seal on the patient's face.

Although the present invention has been described above in relation to a preferred embodiment, it is not limited thereto, but variously modifiable.

In particular, the illustrated geometries are only exemplary and variable. The clamping, detent and joint connections can be realized in many different conventional ways. Although in the embodiment described above, a separate strap connecting member is provided which is inserted on the beak-shaped first portion of the Nasenanschlussele- element and is separated or held between the second region and the coupling element, this is not mandatory. Depending on the expected load corresponding to the age of the patient, as in the prior art, shoulder strap connections can be integrated into the nose connection element.

The arrangement of the projections of the hemispherical portion of the coupling element and its geometry are also only exemplary. In particular, it is also possible to provide a reverse geometry in which the receiving region has projections and the hemispherical region of the coupling element has grooves or a combination of mutual projections and grooves.

LIST OF REFERENCE NUMBERS

100 respiratory mask

1 hose connection element la first branch

lb second branch

lc third branch

Kl gas inlet duct

K2 gas outlet duct

T partition

AI first overhang

A2 second projection

Rl, R2, R3 outer ribs

2 coupling element

2a hollow cylindrical area

2b hollow spherical area

2c insertion opening

2d gain area

OE gas opening

AI first overhang

A2 second projection

R4, R5, R6 inner ribs

3 Nasenanschlusselement 3a first area

3b second area

3c coupling opening

3d, 3e reinforcing ribs

3f nostril

R nose room

A recording room Nl groove

W inner wall

L2, L2 sealing lips

4 carrying strap connection element

4a first carrier connection area

4b connecting bridge area

4c second strap connection area

4d insertion opening

40 holes for carrying straps

Claims

claims

1. A multi-part respiratory mask {100) for supporting the breathing of a patient, comprising: an elastic nose connection element (3) with a nose space (R) for at least partially receiving the nose of the patient and an adjacent receiving space <A) for receiving a rigid coupling element (2} a rigid y-shaped hose connection element {1} having a first branch (1a) with a gas inlet channel (K1), a second branch (1b) with a gas outlet channel (K2) for connecting a gas purging device and a third branch (1c) for connecting the rigid coupling element (2), and the rigid coupling element (2) in which on the one hand, the third branch (lc) of the hose connection element (1) is rotatably locked and on the other hand in the receiving space (A) of the nasal connection element (3) is non-rotatably clamped ,

2. Multi-part respiratory mask (100) according to claim 1, characterized in that the y-shaped hose connection element (1) has an inner partition (T), which the gas inlet channel (Kl) and the gas outlet channel (K2) in the first, second and third branch (la, lb, lc) separates continuously.

3. Multi-part respiratory mask (100) according to claim 1 or 2, characterized in that the coupling element (2) has a hollow cylindrical portion (2a) for receiving the third

Having branches (lc) and an adjacent hollow spherical portion (2b) with a gas opening (OE) for clamping in the receiving space (A) of the nose terminal element (3).

4. Multi-part respiratory mask (100) according to claim 3, characterized in that extending the third branch (lc) of the hose connection element (1) in the hollow cylindrical portion (2a) of the coupling element (2) to the hollow spherical portion (2b).

5. Multi-part respiratory mask (100) according to any one of claims 3 or 4, characterized in that the third branch (lc) of the hose connection element (1) outer ribs (Rl, R2, R3) which with corresponding inner ribs (R4, R5, R6 ) of the hollow cylindrical portion (2a) of the coupling element (2) are latched.

6. Multi-part respiratory mask (100) according to claim 3, 4 or 5, characterized in that the hollow-spherical region (2b) has a first projection (AI) which is mounted in a corresponding groove (Nl) of the receiving space (A).

7. Multi-part respiratory mask (100) according to claim 3, 4, 5 or 6, characterized in that the hollow spherical area (2b) has a second projection (A2) which is supported on an inner wall (W) of the receiving space (A).

8. Multi-part respiratory mask (100) according to any one of the preceding claims, characterized in that the Nasenan- closing element (3) has a first region (3a) with a coupling opening (3c) through which the coupling element (2) in the receiving space (A ) is insertable for jamming, and having a second region (3b) adjacent thereto with a nose opening (3f), wherein the coupling opening (3c) and the nose opening (3f) are arranged substantially perpendicular to each other.

9. Multi-part respiratory mask (100) according to claim 8, characterized in that a carrying strap connection element (4) is provided, which has an insertion opening (4d) through which the first region (3a) of the nasal connection element (3) is inserted, and that Support strap connection element (4) between the coupling element (2) and the second region (3b) of the nose connection element (3) is non-rotatably supported.

10. The multi-part respiratory mask (100) according to claim 9, characterized in that the carrying strap connection element (4) has a first strap connection region (4a) and a second strap connection region (4c) which are interconnected via a connecting web region (4b), wherein the first strap connection region (4a) has the insertion opening (4d).

11. Nasal connection element (3) for use for a multi-part respiratory mask (100) according to one of claims 1 to 10.

12. nasal connecting element (3) according to claim 11, characterized in that it comprises a first region (3a) with a

Coupling opening (3c), through which the coupling element (2) is insertable into the receiving space (A) for clamping, and a second region (3b) with a nose opening (3f) adjacent thereto, the coupling opening (3c) and the nose opening (3f) are arranged substantially perpendicular to each other.

13. nose connection element (3) according to claim 11 or 12,

characterized in that it is made of silicone.

14. A combination of a hose connection element (1) and a coupling element (2) for use for a multi-part respiratory mask (100) according to one of claims 1 to 10.

15. A combination according to claim 14, characterized in that the y-shaped hose connection element (1) has an inner partition (T), which the gas inlet channel (Kl) and the gas outlet channel {K2) in the first, second and third branch (la, 1b , lc) separates continuously.

16. A combination according to claim 14 or 15, characterized in that the coupling element (2) has a hollow cylindrical portion (2a) for receiving the third branch (lc) and eΧΠΘΠ clci ran adjacent hollow spherical portion (2b) with a gas opening (OE) for clamping in the receiving space (A) of the nose-connecting element (3).

17. A combination according to claim 16, characterized in that extending the third branch (lc) of the hose connection element (1) in the hollow cylindrical portion of the coupling element (2) to the hollow spherical portion (2b).

18. A combination according to claim 16 or 17, characterized in that the third branch (lc) of the hose connection element (1) outer ribs (Rl, R2, R3) which with corresponding inner ribs (R4, R5, R6) of the hollow cylindrical portion (2a ) of the coupling element (2) are latched.

19. Combination according to claim 16, 17 or 18, characterized in that the hollow-spherical region (2b) has a first projection (AI), which is mounted in a corresponding groove (Nl) of the receiving space (A).

20. Multi-part respiratory mask according to claim 16, 17, 18 or 19, characterized in that the hollow-spherical region (2b) has a second projection (A2) which is supported on an inner wall (W) of the receiving space (A).