NASAL DEVICES WITH VARIABLE LEAK PATHS, NASAL DEVICES WITH ALIGNERS, AND NASAL DEVICES WITH FLAP VALVE PROTECTORS
Improved passive resistance nasal devices for treating a patient (and particularly, but not exclusively, a sleeping patient) that inhibit exhalation more than inhalation. For example, described herein are passive-resistance nasal devices having a variable sized opening leak path that change the size of the leak path opening depending on the pressure extended across the nasal device. Also described herein are passive nasal devices including a deployable insertion guide member. Also described herein are passive nasal devices including an extension member to hold the airflow resistor portion of the nasal device slightly apart from the subject's nose, even as the nasal device itself may be secured against the nose or nostril openings. Methods of operating these nasal devices and methods of treating patients using these devices are also described.
1 - 34 . (canceled)
35 . A passive-resistance nasal device, the device comprising:
an airflow resistor configured to provide a resistance to exhalation that is greater than the resistance to inhalation; and
a variable opening leak path through the device configured so that the size of the leak path opening increases as expiratory pressure increases and decreases as expiratory pressure decreases.
36 . The device of claim 35 , wherein the nasal device is configured to have a resistance to exhalation that is between about 0.002 and about 0.25 cm H 2 O/(mL/sec) when measured at 100 mL/sec.
37 . The device of claim 35 , wherein the device is an adhesive nasal device comprising an adhesive holdfast configured to secure the airflow resistor in communication with one or both nostrils.
38 . The device of claim 35 , wherein the variable opening leak path comprises a flexible membrane.
39 . The device of claim 35 , wherein the variable opening leak path comprises a pair of membranes, wherein at least one of the membranes is configured to slide relative to the other as expiratory pressure increases and decreases.
40 . The device of claim 35 , further wherein the variable opening comprises a membrane having a spiral of curved cuts.
41 . The device of claim 35 wherein the airflow resistor comprises at least one flap valve.
42 . The device of claim 35 comprising a holdfast region configured to secure the device in communication with both nostrils.
43 . A passive resistance nasal device for use while sleeping, the device comprising:
an airflow resistor configured to provide a resistance to exhalation that is greater than the resistance to inhalation; and
a variable opening leak path comprising a membrane having a plurality of cuts forming leak path openings through the membrane arranged in an approximately circular array and configured so that the size of the leak path openings increase as expiratory pressure increases and decreases as expiratory pressure decreases.
44 . The device of claim 43 , wherein the nasal device is configured to have a resistance to exhalation that is between about 0.002 and about 0.25 cm H 2 O/(mL/sec) when measured at 100 mL/sec.
45 . The device of claim 43 , wherein the device is an adhesive nasal device comprising an adhesive holdfast configured to secure the airflow resistor in communication with one or both nostrils.
46 . The device of claim 43 , wherein the membrane of the variable opening leak path comprises a flexible membrane.
47 . The device of claim 43 , wherein the airflow resistor comprises at least one flap valve.
48 . The device of claim 43 , comprising a holdfast region configured to secure the device in communication with both nostrils.
49 . A method of treating a sleeping patient, the method comprising:
applying a passive nasal device in communication with one or both of the patient's nostrils without covering the patient's mouth;
inhibiting exhalation through the patient's nose more than inhalation through the nose; and
changing the size of a leak path opening through the nasal device during exhalation based on the pressure applied across the nasal device during exhalation.
50 . The method of claim 49 , wherein applying comprises adhesively applying the nasal device.
51 . The method of claim 49 , wherein inhibiting exhalation comprises closing a flap valve during exhalation.
52 . The method of claim 49 , wherein changing the size of the leak path comprises expanding an array of leak path openings configured so that the size of the leak path openings increase as expiratory pressure increases and decreases as expiratory pressure decreases.
53 . The method of claim 49 , wherein changing the size of the leak path comprises expanding or collapsing an array of spiral of curved cuts so that the size of the leak path openings increase as expiratory pressure increases and decreases as expiratory pressure decreases.
54 . The method of claim 49 , wherein changing the size of the leak path comprises sliding a first membrane relative to second membrane as expiratory pressure increases to open the leak path.