# US 2019/0167929 A1 · Methods and Systems for the Treatment of Sleep Apnea

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- Number: US 2019/0167929 A1
- Document ID: US20190167929A1
- Status: Published application
- Kind: A1
- Application number: 16/210,681
- Filed: 2018-12-05
- Published: 2019-06-06
- Earliest claimed: 2017-12-06
- Assignees: Fresca Medical, Inc.
- Applicants: Fresca Medical Inc.
- Inventors: John Cox; Ed McCarthy; Richard Ewers
- Web page: https://patentgrep.com/patent/US20190167929A1

## CPC

- A61M 16/0066: {Blowers or centrifugal pumps}
- A61B 5/4818: {Sleep apnoea}
- A61M 16/0069: {the speed thereof being controlled by respiratory parameters, e.g. by inhalation}
- A61M 16/024: {including calculation means, e.g. using a processor}
- A61F 5/56: Devices for preventing snoring
- A61M 16/0672: {Nasal cannula assemblies for oxygen therapy}
- A61M 16/203: {Proportional}
- A61M 2016/0036: {in the breathing tube and used in both inspiratory and expiratory phase}
- A61M 2016/0039: {in the inspiratory circuit}
- A61M 2205/3553: remote, e.g. between patient's home and doctor's office
- A61M 2205/3592: using telemetric means, e.g. radio or optical transmission
- A61M 2205/505: Touch-screens; Virtual keyboard or keypads; Virtual buttons; Soft keys; Mouse touches
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)

## Abstract

A blower for the treatment of a patient's sleep apnea is disclosed. The blower includes a start/stop button, an air pump, and a processor connected to the start/stop button and air pump. A user may input a sleep period (Tsleep), an ultimate therapeutic pressure (TP) and an acclimation period (Nset). The processor performs an acclimation procedure to ease the patient in to the use of the positive airway pressure (PAP) system over the selected acclimation period.

## Claims

### Claim 1

A blower for the treatment of a patient's sleep apnea, the blower comprising:
a start/stop button;
an air pump;
a processor connected to the start/stop button and air pump, the processor configured to perform an acclimation procedure with the following steps:
a. set a sleep period (Tsleep), an ultimate therapeutic pressure (TP), an acclimation period (Nset), and setting a day counter (Nday);
b. When the patient presses the start/stop button:
i. begin a timer (T);
ii. set the air pump to deliver air pressure at a pressure based on ((Nday/Nset)×TP);
iii. when patient presses start/stop button while performing step (b)(ii):
(A) Stop delivering air pressure;
(B) Pause T, and
(C) If T<Tsleep, then return to step (b).
(D) If T>=than Tsleep, and Nset>=Nday, then reset T, increase Nday and return to step (b).

### Claim 2 (depends on 1)

The blower of claim 1, wherein the processor is further configured to perform the following steps after (b)(iii)(D): if T>=than Tsleep, and Nset<Nday, then exit acclimation procedure.

### Claim 3 (depends on 1)

The blower of claim 1, wherein the processor is further configured to perform the following steps:
set a ramp period (Tramp1) and a pre-ramp period (Tpr);
step (b)(ii) further comprises:
allow Tpr to elapse, then:
i. Start a second timer T2
ii. Set the air pump to deliver air pressure at a pressure based on ((Nday/Nset)×(T2/Tramp1)×TP);
iii. When T2>=Tramp1 then set the air pump to deliver air pressure at a pressure based on ((Nday/Nset)×TP).

### Claim 4 (depends on 1)

The blower of claim 1, wherein the processor sets Tsleep, TP, and Nset based on a user's input.

### Claim 5 (depends on 1)

The blower of claim 1, wherein Tsleep is set between 4 and 8 hours.

### Claim 6 (depends on 1)

The blower of claim 1, wherein TP is set between 4 and 20 CM H20.

### Claim 7 (depends on 1)

The blower of claim 1, wherein Nset is set between 3 and 14 days.

### Claim 8 (depends on 3)

The blower of claim 3, wherein the processor sets Tramp and Tpr based on a user's input.

### Claim 9 (depends on 3)

The blower of claim 3, wherein either or both of Tramp and Tpr are set between 0.25 and 1.5 hours.

### Claim 10 (depends on 1)

The blower of claim 1, further comprising a flow detector connected to the processor and adapted to measure the airflow delivered to the patient, wherein the processor is further configured to perform the following steps:
measure the air flow over a first period;
measure the air flow over a second period;
detect an apnea or hypopnea event based on a deviation between the measured air flows;
adjust the TP based on the detected apnea or hypopnea event.

### Claim 11

A blower for the treatment of a patient's sleep apnea, the blower comprising:
a start/stop button;
an air pump;
a processor connected to the start/stop button and air pump, the processor adapted to perform an acclimation procedure comprised of the following steps:
a. receiving a sleep period (Tsleep), an ultimate therapeutic pressure (TP), and an acclimation period (Nset);
b. wait for a patient to press the start/stop button, and once pressed setting the set the air pump to deliver air pressure at a pressure based on ((Nday/Nset)×TP);
c. when the patient presses the start stop button after step (b), determining if:
i. Tsleep has elapsed since the patients press of the start/stop button from step (b), if so increment a counter N, stop delivering air pressure and return to step (b);
ii. Tsleep has not elapsed since the patients press of the start/stop button from step (b), if so then determine if the day counter N exceeds the acclimation period:
i. If so, then stop delivering air pressure and exit acclimation procedure.
ii. If not, then stop delivering air pressure and return to step (b).

### Claim 12 (depends on 11)

The blower of claim 11, wherein step (a) comprises receiving a ramp period (Tramp1) and a pre-ramp period (Tpr), and step (b) further comprises:
allowing Tpr to elapse before delivering air pressure; and
when air pressure is delivered it is ramped up to and plateaued at the value of ((Nday/Nset)×TP) over Tramp1.

### Claim 13 (depends on 11)

The blower of claim 11, wherein the processor receives Tsleep, TP, and Nset based on a user's input.

### Claim 14 (depends on 11)

The blower of claim 11, wherein Tsleep is set between 4 and 8 hours.

### Claim 15 (depends on 11)

The blower of claim 11, wherein TP is set between 4 and 20 CM H20.

### Claim 16 (depends on 11)

The blower of claim 11, wherein Nset is set between 3 and 14 days.

### Claim 17 (depends on 12)

The blower of claim 12, wherein the processor receives Tramp1 and Tpr based on a user's input.

### Claim 18 (depends on 12)

The blower of claim 12, wherein either or both of Tramp1 and Tpr are set between 0.25 and 1.5 hours.

### Claim 19 (depends on 11)

The blower of claim 11, further comprising a flow detector connected to the processor and adapted to measure the airflow delivered to the patient, wherein the processor is further configured to perform the following steps:
measure the air flow over a first period;
measure the air flow over a second period;
detect an apnea or hypopnea event based on a deviation between the measured air flow overs;
adjust the TP based on the detected apnea or hypopnea event.
