CONNECTING SOCKET AND ROTARY SLEEVE FOR RESPIRATION

Abstract

Disclosed is a respiratory device comprising a connecting socket which is inserted at least partially into a rotary sleeve and is latched thereto. The connecting socket and the rotary sleeve are disposed between a respiration hose and a patient interface, the connecting socket having an external diameter which is smaller than the internal diameter of the rotary sleeve. The rotary sleeve comprises on its inner side latching elements which engage in latching elements on the external diameter of the socket.

Claims

1. A respiratory device, wherein the respiratory device comprises a connecting socket which is inserted at least partially into a rotary sleeve and is latched thereto, the connecting socket and the rotary sleeve being disposed between a respiration hose and a patient interface, the connecting socket having an external diameter which is smaller than an internal diameter of the rotary sleeve, and the rotary sleeve comprising on its inner side latching elements that engage in latching elements on the external diameter of the socket.

2. The device of claim 1, wherein the socket intrudes with at least 30% of its length into the rotary sleeve.

3. The device of claim 1, wherein the socket intrudes with at least 60% of its length into the rotary sleeve.

4. The device of claim 1, wherein the socket intrudes with at least 80% of its length into the rotary sleeve.

5. The device of claim 1, wherein the rotary sleeve comprises on its inner wall a stop for the socket.

6. The device of claim 1, wherein the respiration hose comprises a hose coupling having an internal diameter which is greater than an external diameter of the rotary sleeve.

7. The device of claim 1, wherein the rotary sleeve is conical, so that an external diameter of the rotary sleeve widens up to an end that faces the connecting socket.

8. The device of claim 1, wherein the rotary sleeve has a conical inner face.

9. The device of claim 1, wherein the rotary sleeve has symmetrical extensions (lugs) of a one-piece (unitary) outer wall.

10. The device of claim 9, wherein the lugs comprise on their inner wall an undercut or latching portion which serves for the latching to the socket.

11. The device of claim 1, wherein the rotary sleeve has an internal diameter which is smaller than the external diameter of the connecting socket.

12. The device of claim 1, wherein the external diameter of the connecting socket widens conically.

13. The device of claim 1, wherein the socket, for the latching to the rotary sleeve, comprises a circumferential bevel or a step in its outer wall.

14. The device of claim 13, wherein the socket tapers behind the step and has an external diameter which is smaller than the external diameter of the connecting socket.

15. The device of claim 13, wherein the socket tapers behind the step and has an external diameter which is smaller than a conically widened external diameter of the connecting socket.

16. The device of claim 10, wherein the lugs reach with the undercut over the step to thereby form a snap joint between rotary sleeve and socket.

17. The device of claim 1, wherein an axial displacement between the rotary sleeve and the socket is avoided by an end stop in the rotary sleeve, against which end stop the socket butts.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following drawings illustrate the structure of a hose attachment to a patient interface. In the drawings:

[0022] FIG. 1 shows a connecting socket with rotary sleeve and respiration hose;

[0023] FIG. 2 is a sectional representation of the structure;

[0024] FIG. 3 is an exploded representation of the structure;

[0025] FIG. 4 shows the rotary sleeve connected to the connecting socket;

[0026] FIG. 5 is a sectional view through rotary sleeve and connecting socket;

[0027] FIG. 6 shows a rotary sleeve.

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS

[0028] The particulars shown herein are by way of example and for purposes of illustrative discussion of the embodiments of the present invention only and are presented in the cause of providing what is believed to be the most useful and readily understood description of the principles and conceptual aspects of the present invention. In this regard, no attempt is made to show details of the present invention in more detail than is necessary for the fundamental understanding of the present invention, the description in combination with the drawings making apparent to those of skill in the art how the several forms of the present invention may be embodied in practice.

[0029] For the respiration, the hose (1), at whose ends is found a hose coupling (I a), is connected on the patient side, via a rotary sleeve (2) and a connecting socket (6), to the patient interface (4) (not represented). The hose coupling (1a) of the respiration hose (1) is slipped over the conically slightly thickening outer wall (5) of the rotary sleeve (2), to the point where it is tightly fitted. To this end, the hose coupling (1a) has an internal diameter D6 which is greater than the external diameter D5 of the rotary sleeve (2). The rotary sleeve has, for instance, a conically slightly thickening outer wall (5), so that the external diameter D5 of the rotary sleeve (2) slowly widens up to the end (8) facing the connecting socket.

[0030] The rotary sleeve has, for instance, in addition to the conical outer face (5), also a conical inner face (7). This is configured so as to correspond with the socket (6) of the elbow connection (3) and, by virtue of a slight play, enables the smooth turning function of the components. The rotary sleeve (2) has symmetrical extensions (8) of the one-piece (unitary) casing, which can be referred to as lugs. The lugs (8) have an internally arranged undercut (9) or hook portion, which serves for the latching to the socket (6). The socket (6) has for the latching a circumferential bevel or a step (10) on the surface, behind which step the socket tapers slightly, with the external diameter D1. The rotary sleeve (2) has an internal diameter D4 which is smaller than the external diameter D3 of the connecting socket (6).

[0031] The lugs (8) reach with the undercut over the step (10) and thus form a snap joint between rotary sleeve (2) and socket (6). The connecting socket (6) has, for instance, a conical surface, which results in the external diameter D3 being smaller than the external diameter D2.

[0032] An axial displacement between the rotary sleeve (2) and the socket is avoided by an end stop (11), against which the socket (6) of the elbow connection (3) can maximally move, in the rotary sleeve (2). The details of the snap joint (undercut 9 and bevel 10), as well as the end stop (11), are evident in the sectional representation. The undercut (9) on the lugs (8) is represented in the detailed view, FIG. 6, of the rotary sleeve (2).

[0033] If the connection between hose (t) and mask (4) is to be broken, it is sufficient to pull on the hose coupling (1a) or the hose (1) and the snap joint between socket (6) and rotary sleeve (2) releases. The hose coupling (1a), however, still sits securely on the rotary sleeve (2). If, however, the connection between hose coupling (1a) and rotary sleeve (2) is to be released, for example for cleaning purposes, then the two extended lugs (8) additionally serve as holding or gripping surfaces. For the removal of the hose, the rotary sleeve is grasped via the lugs (8) and so simultaneously secures the snap joint—through the pressure on the lugs—when the hose (1) is pulled off the rotary sleeve (2) by slight bending of the hose coupling (1a).

[0034] As a result of the long, smooth overlap region between the rotary sleeve (2) and the socket, substantially fewer leaks occur than with the known, slotted snap joints. To this end, the connecting socket (6) is inserted at least with about 30% of its length, e.g., at least about 40% of its length, at least about 50% of its length, or at least about 60% of its length, into the rotary sleeve (2).

[0035] While the present invention has been described with reference to exemplary embodiments, it is understood that the words which have been used herein are words of description and illustration, rather than words of limitation. Changes may be made, within the purview of the appended claims, as presently stated and as amended, without departing from the scope and spirit of the present invention in its aspects. Although the present invention has been described herein with reference to particular means, materials and embodiments, the present invention is not intended to be limited to the particulars disclosed herein; rather, the present invention extends to all functionally equivalent structures, methods and uses, such as are within the scope of the appended claims.

REFERENCE NUMERALS

[0036] 1 respiration hose with [0037] 1a hose coupling [0038] 2 rotary sleeve [0039] 3 elbow connection with ball joint [0040] 4 respiration mask (not represented) [0041] 5 outer face of the rotary sleeve (2) [0042] 6 socket [0043] 7 inner face of the rotary sleeve (2) [0044] 8 lug [0045] 9 undercut [0046] 10 bevel, step [0047] 11 stop