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Patient interface systems

a technology for patient interfaces and interfaces, applied in the field of patient interfaces, can solve problems such as health risks, lack of stability, and improvement or decrease of comfort or effectiveness, and achieve the effect of improving manufacturability and improving ease-of-us

Inactive Publication Date: 2010-09-16
RESMED LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0027]One aspect relates to providing comfortable, stable, effective, unobtrusive patient interface systems for delivering a supply of air at positive pressure to the entrance of a patient's airways. Another aspect relates to a patient interface system that fits a wide range of patients, has improved manufacturability and improved ease-of-use.
[0028]Another aspect relates to providing patient interface systems where forces applied to the patient interface structure, such as from tube drag forces or movement of the patient, does not disrupt the seal between the patient interface structure and the patient's airways.
[0030]A further aspect relates to patient interface systems in which tension of the seal positioning and stabilizing structure may be set with a lesser regard to overcoming tube drag as the effects of tube drag are isolated from disrupting the seal via decoupling. Thus in accordance with this aspect, the tension of the seal positioning and stabilizing structure may be reduced and patient comfort increased.
[0032]Another aspect of the present technology is a conforming patient interface structure that reduces the number of, or does not include, rigid components. For example, in one form the patient interface does not include a rigid frame.
[0035]Another aspect of the present technology is a stabilizing structure that directs a seal effecting force to a region close to the sealing surface, e.g. the base of the nose. A force close to the sealing surface reduces a bending arm.

Problems solved by technology

Apparently subtle changes may improve or decrease comfort or effectiveness.
While millions of people suffer from the condition of sleep disordered breathing, many fail to comply with therapy because of problems with comfort, ease of use, stability, leak, and obtrusiveness, and thus expose themselves to health risks.
Whilst some smaller patient interfaces (such as some nasal puffs, and some nasal prongs) may be less obtrusive than larger masks (such as a full-face mask) they can suffer from a lack of stability.
This can lead to excessive forces on sensitive regions of the face, resulting in discomfort to the patient.

Method used

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Examples

Experimental program
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Effect test

first embodiment

3.2.4.1 Patient Interface Structure Including Linking Element—First Embodiment

[0167]Referring to FIGS. 8a and 8b, a patient interface structure according 32 according to another sample embodiment may comprise a seal 2 comprising a nozzle assembly 3 having nasal pillows 4. The patient interface structure 32 may include an optional linking portion or element 47 configured to link tension forces applied by the seal positioning and stabilizing structure from one side of the patient interface structure 32 to the other side in order to isolate forces applied by the seal positioning and stabilizing structure at the top portion 6t of the flexible base 6, and thereby isolate tube drag forces at the lower portion 6l of the flexible base 6 of the patient interface structure 32. By isolating forces in such a way, the sealing zones 8a of the nasal pillows 4 of the seal 2 are stabilized against the patient's nares in use. In some forms of the technology, there may be no physical linking element. ...

second embodiment

3.2.4.2 Patient Interface Structure Including Linking Element—Second Embodiment

[0173]As shown in the sample embodiment of the patient interface structure shown in FIG. 8a, the linking element 47 may extend across the entire top portion 6t of the flexible base 6, from connector 50 to connector 50, and including the entire width. See, for example, W1 in FIG. 17a. According to another sample embodiment of the patient interface structure 32 shown in FIG. 8c, the linking element 47 may extend over a section, or sections, of the top portion 6t of the flexible base 6, for example only the section of the top portion 6t between the nasal pillows 4. The linking element 47 may cover a fraction of the width of the top portion 6t, for example half the width. The tension linking element 47 may cover a section, or sections, of the top portion 6t as long as it is sufficient to isolate the forces as described above.

third embodiment

3.2.4.3 Patient Interface Structure Including Linking Element—Third Embodiment

[0174]Referring to FIG. 8d, the linking element may be formed as a series of ridges 47a. The number of ridges 47a may be determined in order to sufficiently isolate forces as described above. As shown in FIG. 8d, the ridges 47a may be provided to the top portion 6t only between the nasal pillows 4. The ridges 47a may be thicker than the top portion 6t. The ridges 47a may be generally circular or rectangular or any other shape. The ridges 47a may extend upwards and / or downwards from the top portion 6t. The ridges 47a may also be formed from a material of higher hardness than that used to form top portion 6t, for example higher durometer silicone, or metal. The ridges 47a may be formed in one piece with the patient interface structure 32, or may be retrofitted to the patient interface structure 32. For example, the linking element, e.g. the ridges 47a, may be adhesively attached to the patient interface stru...

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Abstract

A headgear for positioning a patient interface structure for delivering a pressurized flow of breathable gas to the airways of a patient includes at least one flexible strap loop which is attachable to the patient interface structure by a forked region of the at least one strap loop that is mountable on the patient interface structure. The at least one strap loop positions the patient interface structure on the face of the patient. The forked region includes two forks adapted to be attached to an upper and lower portion on the patient interface structure. The two forks are connected by a bridge so that the forked region is divided into a first region and a second region, and the first region is mountable on the patient interface structure. An elbow for a patient interface system for delivering a flow of breathable gas to a patient includes a first portion having a first end configured to be connected to the patient interface system; and a second portion having a second end configured to be connected to a tube that delivers the flow of breathable gas. An outer circumferential wall includes a plurality of perpendicular steps formed therein and a plurality of vent holes are provided perpendicular to the plurality of perpendicular steps.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation-in-part of International Application PCT / AU2008 / 001557, filed Oct. 22, 2008, which claims priority to Australian Applications 2007905737 and 2007906276, filed Oct. 22, 2007 and Nov. 16, 2007, respectively, and U.S. application Ser. Nos. 61 / 031,173 and 61 / 129,982, filed Feb. 25, 2008 and Aug. 4, 2008, respectively, the entire contents of each being incorporated herein by reference. This application is also a continuation-in-part of U.S. application Ser. No. 29 / 335,698, filed Apr. 20, 2009, the entire contents of which are incorporated herein by reference.FIELD OF THE INVENTIONS[0002]The inventions relate to patient interfaces for delivery of respiratory therapy to a patient. Examples of such therapies include Continuous Positive Airway Pressure (CPAP), Non-Invasive Positive Pressure Ventilation (NIPPV), and Variable Positive Airway Pressure (VPAP). The therapy is used for treatment of various respiratory ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61M16/06A61M16/08B23P17/04B29C43/32
CPCA61M16/06A61M16/0666A61M16/0683Y10T29/49826A61M2210/0618A61M16/0611A61M16/0816A61M16/0825A61M16/0622A61M16/0875A61M2205/0216
Inventor RUMMERY, GERARD MICHAELHENRY, ROBERT EDWARDHILL, PHOEBE KATHERINEHURST, ANDREWNURSE, PHILIP MICHAEL
Owner RESMED LTD
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