WO2018092380A1 - Dispositif cpap - Google Patents

Dispositif cpap Download PDF

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Publication number
WO2018092380A1
WO2018092380A1 PCT/JP2017/030804 JP2017030804W WO2018092380A1 WO 2018092380 A1 WO2018092380 A1 WO 2018092380A1 JP 2017030804 W JP2017030804 W JP 2017030804W WO 2018092380 A1 WO2018092380 A1 WO 2018092380A1
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WO
WIPO (PCT)
Prior art keywords
case
air
housing
opening
fan unit
Prior art date
Application number
PCT/JP2017/030804
Other languages
English (en)
Japanese (ja)
Inventor
中田　佑希
貴敏 井ノ口
康宏 飛内
松下　裕樹
Original Assignee
日本電産コパル電子株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日本電産コパル電子株式会社 filed Critical 日本電産コパル電子株式会社
Priority to CN201790001421.3U priority Critical patent/CN210331307U/zh
Publication of WO2018092380A1 publication Critical patent/WO2018092380A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes

Definitions

  • Embodiments of the present invention relate to a CPAP (Continuous Positive Airway Pressure) device applied to, for example, treatment of sleep apnea syndrome.
  • CPAP Continuous Positive Airway Pressure
  • the CPAP device is a device that sends an air flow of constant pressure generated by a fan into the airway via a pipe and a mask or nasal cannula attached to the patient's nose. For this reason, a turbofan and a drive circuit for driving the turbofan are provided in the CPAP device (see, for example, Patent Document 1 and Patent Document 2).
  • JP 2013-150684 A Japanese Unexamined Patent Publication No. 2016-34409
  • the electronic components included in the drive circuit each have a rated temperature, and the turbo fan performance can be maintained by operating within the rated temperature range. If the performance of the turbofan is degraded, it will not be possible to supply a constant pressure air flow to the mask or nasal cannula.
  • the CPAP device housing provided with the drive circuit needs to prevent water from entering from the outside.
  • the present invention is intended to provide a CPAP device capable of efficiently and sufficiently cooling a drive circuit.
  • a CPAP device includes a first housing part provided between an air inlet and an outlet, and a second housing part adjacent to the first housing part. And a branch channel that is provided in the first housing portion, sucks air from the air inlet, discharges it from the outlet, and guides a part of the air sucked from the air inlet to the second housing portion
  • a fan unit provided in the second housing part and driving the fan unit; an opening provided in the housing for guiding the air in the second housing part to the outside of the housing; Are provided.
  • the present invention provides a CPAP device capable of efficiently and sufficiently cooling a drive circuit.
  • FIG. 4 is a cross-sectional view taken along line IV-IV shown in FIG. 2. Sectional drawing which takes out and shows a part of fan unit shown in FIG.
  • the block diagram which shows schematically the structure of the control system of the CPAP apparatus which concerns on this embodiment.
  • a CPAP device 10 as a blower unit includes a first case 11 and a second case 12 as housings.
  • the first case 11 is attached to the upper part of the second case 12.
  • the upper portion of the second case 12 has a shape in which both end portions in the short direction protrude outward from the bottom portion.
  • a turbo fan described later is provided in the first case 11 and the second case 12.
  • An air intake port 13 is provided on one side surface in the longitudinal direction of the second case 12, and an air discharge port is provided on the side surface opposite to the air intake port 13 of the first case 11 and the second case 12.
  • a discharge unit 15 having 14 is provided. Air sucked from the intake port 13 by the turbofan is discharged from the discharge port 14 at a constant pressure.
  • One end of a pipe (not shown) is attached to the discharge port 14. The other end of the pipe is provided with a mask or nasal cannula (not shown), and the mask or nasal cannula is attached to the patient's nose.
  • various cables 16 for power supply and interface are provided in the vicinity of the discharge unit 15 on the side surfaces of the first case 11 and the second case 12 where the discharge unit 15 is provided.
  • FIG. 2 shows a state where the first case 11 of FIG. 1 is removed.
  • an inner case 43 is provided in the second case 12, and a first accommodating portion 12-1 and a second accommodating portion 12-2 are provided in the upper portion of the inner case 43. It has been.
  • a partition plate 43a is provided substantially around the first housing portion 12-1, and the first housing portion 12-1 and the second housing portion 12-2 are partitioned by the partition plate 43a.
  • partition plate 43a partitions the first storage portion 12-1 and the second storage portion 12-2.
  • the fan unit 17 configured by a turbo fan is provided in the first housing portion 12-1.
  • a printed circuit board 29 is provided in the second housing portion 12-2.
  • a drive circuit 41 for driving the fan unit 17, a control unit 40 that controls the drive circuit 41, a differential pressure sensor 24, a pressure sensor 26, and the like are disposed on the printed circuit board 29.
  • the drive circuit 41 includes a heat generating component such as a plurality of power MOS transistors 41a, for example.
  • the arrangement of the control unit 40 and the drive circuit 41 is not limited to this, and can be modified.
  • FIG. 3 is an exploded view of the main part of FIG. 2, and FIG. 4 shows a cross section taken along line IV-IV of FIG. 3 and 4, some parts are omitted for convenience of explanation.
  • a recess 12 a is provided in the second case 12, and the recess 12 a communicates with the intake port 13.
  • a filter 51 made of a porous material is provided inside the air inlet 13, and a silencer 42 made of a sound absorbing material is provided in the recess 12 a.
  • the silencer 42 has a recess 42a in which a portion facing the air inlet 13 is opened.
  • the recess 12 a that houses the silencer 42 is covered by the inner case 43.
  • the partition plate 43a of the inner case 43 has a plurality of notches 43c, 43d, and 43e, and bushes 46, 47, and 48 made of, for example, silicon rubber are fitted into these notches 43c, 43d, and 43e.
  • the partition plate (not shown) of the first case 11 also has a plurality of notch portions (not shown) to which the bushes 46, 47, 48 are fitted, corresponding to the notch portions 43c, 43d, 43e.
  • the bush 46 is connected to the first tube 19, the second tube 20, the differential pressure generating member 32, and the pressure sensor 26 connected to the differential pressure generating member 32 and the differential pressure sensor 24.
  • the third tube 21 is inserted and is a part that seals between the first housing portion 12-1 and the second housing portion 12-2.
  • the bush 47 is a component that is connected to the fan unit 17 and introduces cooling air into the second accommodating portion 12-2.
  • the bush 48 is a component that seals between the first housing portion 12-1 and the second housing portion 12-2 through insertion of a lead wire (not shown) that connects the fan unit 17 and the drive circuit 41.
  • An opening 43b is provided in a portion of the inner case 43 located inside the partition plate 43a.
  • a silencer 44 formed of a sound absorbing material is provided on a portion located on the outer side and a portion located on the inner side of the partition plate 43a of the inner case 43.
  • the silencer 44 is provided on the lower surface of the inner case 43, and the portion located inside the partition plate 43a corresponds to the opening 43b of the inner case 43 as shown in FIG. An opening 44a is provided.
  • the opening 43b of the inner case 43 and the opening 44a of the silencer 44 are disposed so as to face a part of the recess 42a of the silencer 42, and the opening 44a of the silencer 44 disposed in the opening 43b of the inner case 43
  • the fan unit 17 is attached.
  • a printed circuit board 29 is provided in a portion of the inner case 43 located outside the partition plate 43a.
  • an intake chamber 45 is formed between the silencer 44 and the recess 42 a of the silencer 42 in a state where the inner case 43 is attached in the second case 12.
  • the intake chamber 45 communicates with the intake port 13 through a filter 51, and the intake port 17 a of the fan unit 17 disposed in the opening portion 43 b of the inner case 43 and the opening portion 44 a of the silencer 44 in the intake chamber 45. Is placed.
  • the blowout port 17b of the fan unit 17 is connected to the discharge unit 15 through a joint 18.
  • a rectifying plate 31 and a differential pressure generating member 32 that generates a differential pressure in the air flow are arranged inside the joint 18.
  • the rectifying plate 31 has, for example, a plurality of rectifying fins, and the differential pressure generating member 32 has a plurality of holes. Detailed description of the rectifying plate 31 and the differential pressure generating member 32 is omitted for convenience of description.
  • the discharge unit 15 is provided with one end of a first tube 19, a second tube 20, and a third tube 21.
  • the first tube 19 is a tube that guides the pressure (high pressure) on the upstream side of the differential pressure generating member 32 to the differential pressure sensor 24, and the second tube 20 is the pressure (low pressure) on the downstream side of the differential pressure generating member 32.
  • the third tube 21 is a tube that guides the pressure (low pressure) on the downstream side of the differential pressure generating member 32 to the pressure sensor 26.
  • the other ends of the first tube 19 and the second tube 20 pass through the bush 46 provided in the partition plate 43a and are connected to the differential pressure sensor 24 via the connectors 22 and 23.
  • the differential pressure sensor 24 is discharged from the discharge port 14 by detecting the pressure difference between the upstream side and the downstream side of the differential pressure generating member 32 introduced by the first tube 19 and the second tube 20. Detect air flow.
  • the other end of the third tube 21 passes through a bush 46 provided in the partition plate 43a and is connected to a first port (pressure port) described later of the pressure sensor 26 via the connector 25.
  • the pressure sensor 26 detects the pressure of the air discharged from the discharge port 14.
  • a fourth tube 27 is connected to a later-described second port (atmospheric release port) of the pressure sensor 26.
  • a connector 28 is provided at the other end of the fourth tube 27.
  • the connector 28 is connected to a protrusion 52 disposed on the lower surface 12b of the second case 12 shown in FIG.
  • the protrusion 52 has an opening 53 that penetrates the lower surface 12 b of the case 12. That is, the fourth tube 27 and the connector 28 open the pressure sensor 26 to the atmosphere via the opening 53.
  • the pressure sensor 26 detects the pressure of the air discharged from the discharge port 14 by detecting the air pressure downstream of the differential pressure generating member 32 introduced by the third tube 21.
  • the differential pressure sensor 24 and the pressure sensor 26 are arranged on a printed circuit board 29.
  • the printed circuit board 29 is further provided with various cables 16 for power supply and interface, a power switch 30 and the like.
  • the fan unit 17 has a function of discharging the air sucked from the suction port 17a from the discharge port 14 and cooling the inside of the first case 11 and the second case 12.
  • FIG. 5 shows a part of the fan unit 17 taken out.
  • the fan unit 17 is configured by a turbo fan as a centrifugal fan (blower), for example.
  • the fan unit 17 includes an intake port 17a, a blowout port 17b (not shown in FIG. 5), a motor 17c, an intake chamber 17e, a turbo fan 17f, a branch channel 17g, and an opening 17h. It has.
  • the motor 17c is, for example, a coreless motor, and includes a permanent magnet 17m provided on the fixed shaft 17l and a coil 17n provided on the rotor 17d.
  • the intake chamber 17e is provided between the intake port 17a and the outlet port 17b.
  • the fan 17f is disposed in the intake chamber 17e and is attached to the rotor 17d.
  • the diversion channel 17g is a passage for guiding a part of the air in the intake chamber 17e to the outside of the fan unit 17 from the opening 17h.
  • the shunt path 17g is formed, for example, between the cover 17i of the fan unit 17 and the case 17k of the motor 17c. That is, the inside of the cover 17i has a concentric cylindrical portion 17j, and a branch flow path 17g is formed between the cylindrical portion 17j and the case 17k of the motor 17c, and between the cylindrical portion 17j and the cover 17i.
  • the shape of the diversion channel 17g is not limited to this, and can be deformed.
  • the opening 17h is disposed on the side of the cover 17i on the side opposite to the outlet 17b.
  • a part of the air taken into the intake chamber 17e from the intake port 17a with the operation of the motor 17c and the fan 17f shown in FIG. 5 is provided in the opening 17h through the branch flow path 17g as shown by a broken line. Guided to the bush 47.
  • an opening 50 is provided in the second housing portion 12-2 of the second case 12.
  • the opening 50 has a function as an exhaust port for discharging the air in the second accommodating portion 12-2.
  • the opening 50 is provided on a downward surface (hereinafter referred to as a lower surface) 12 b at, for example, an edge of the recess 12 a of the second case 12. That is, the opening 50 is provided on the lower surface 12 b of the second case 12 in order to prevent, for example, water applied on the first case 11 from entering the second case 12.
  • a cover 12c arranged at a predetermined interval from the opening 50 may be provided inside the second case 12.
  • the cover 12c can also be provided outside the second case 12.
  • the arrangement position of the opening 50 is preferably a position away from the intake port 13 in order to prevent warm air from being sucked from the intake port 13. Thereby, the cooling efficiency in the second case 12 can be improved.
  • FIG. 6 schematically shows the configuration of the control system of the CPAP device 10.
  • the differential pressure sensor 24, the pressure sensor 26, the power switch 30, and the drive circuit 41 are connected to the control unit 40, and the fan unit 17 is connected to the drive circuit 41.
  • the controller 40 calculates the flow rate of air generated from the fan unit 17 based on the differential pressure detected by the differential pressure sensor 24. Further, the control unit 40 controls the drive circuit 41 based on the calculated air flow rate and the air flow pressure detected by the pressure sensor 26 to control the rotational speed of the fan unit 17. In this way, the control unit 40 detects the patient's breathing state based on the change in the air flow rate and pressure detected by the differential pressure sensor 24 and the pressure sensor 26, and according to the patient's breathing state, Air having a predetermined flow rate and pressure can be sent out from the discharge port 14.
  • the air sucked from the intake port 13 shown in FIG. 4 is guided through the filter 51 into the recess 42 a as an intake chamber, and the fan unit 17. From the intake port 17a to the intake chamber 17e. The air in the intake chamber 17e is guided from the blowout port 17b to the discharge port 14 through the rectifying plate 31 and the differential pressure generating member 32, and is discharged from the discharge port 14 with a predetermined pressure.
  • the air guided from the intake chamber 17e shown in FIG. 5 to the branch flow path 17g is discharged to the second accommodating portion 12-2 through the bush 47 provided in the opening portion 17h.
  • the air discharged from the bush 47 to the second accommodating portion 12-2 flows through the second accommodating portion 12-2 and onto the printed circuit board 29 as indicated by the broken arrow.
  • Heating components such as the provided power MOS transistor 40 a are cooled and discharged from the opening 50 to the outside of the first case 11 and the second case 11.
  • the first case 11 and the second case 12 have the first storage portion 12-1 and the second storage portion 12-2 partitioned by the partition plate 43a, and the first The fan unit 17 accommodated in the accommodating portion 12-1 has a diversion channel 17g that diverts a part of the air discharged from the discharge port 14, and the diverted air passes through the bush 47 and is supplied to the second flow path 17g.
  • Heating components such as the power MOS transistor 40a provided in the housing portion 12-2 and provided in the second housing portion 12-2 are cooled. For this reason, it is possible to efficiently and sufficiently cool the heat generating component by using a part of the air discharged from the fan unit 17.
  • the second case 12 has an opening 50, and air used for cooling in the second housing portion 12-2 is supplied from the opening 50 to the first case 11 and the second case 11. It is discharged to the outside.
  • the drive circuit such as the power MOS transistor 40a can be efficiently and sufficiently cooled. Therefore, the drive circuit can be operated within the rated temperature range, the drive circuit performance can be prevented from being lowered, and the drive force of the fan unit 17 can be prevented from being lowered. It is possible to discharge from the discharge port 14.
  • the opening 50 is provided on the lower surface 12b of the second case 12. For this reason, for example, it is possible to prevent water applied on the first case 11 from entering the first and second cases 12-1 and 12-2.
  • the opening 50 is provided at a position away from the air inlet 13. For this reason, it is possible to reduce the intake of air warmed by the cooling of the drive circuit 41 from the intake port 13, and it is possible to intake fresh air from the intake port 13.
  • the present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying constituent elements without departing from the scope of the invention in the implementation stage.
  • various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above embodiments. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.
  • the CPAP device according to the embodiment of the present invention can be applied to the treatment of sleep apnea syndrome.
  • DESCRIPTION OF SYMBOLS 10 ... CPAP apparatus, 11 ... 1st case (housing), 12 ... 2nd case (housing), 12-1 ... 1st accommodating part, 12-2 ... 2nd accommodating part, 12b ... Lower surface, 13 DESCRIPTION OF SYMBOLS ... Intake port, 14 ... Discharge port, 17 ... Fan unit, 17g ... Split flow path, 40 ... Control part, 43a ... Partition plate, 50 ... Opening part.

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  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

En tant que boîtier, un premier logement 11 et un second logement 12 comprennent une première section de logement 12-1 disposée entre une entrée d'air 13 et une sortie 14, et une seconde section de logement 12-2 adjacente à la première section de logement 12-1. Une unité de ventilateur 17 est disposée à l'intérieur de la première section de logement 12-1, aspire l'air de l'entrée 13 et évacue l'air de la sortie 14, et a un trajet d'écoulement divisé 17g qui guide dans la seconde section de logement 12-2 une partie de l'air aspiré à partir de l'entrée 13. Un circuit de commande 41 est disposé dans la seconde section de logement 12-2, et commande l'unité de ventilateur 17. Une ouverture 50 est disposée dans le boîtier et guide l'air à l'intérieur de la seconde section de logement 12-2 vers l'extérieur du boîtier.
PCT/JP2017/030804 2016-11-15 2017-08-28 Dispositif cpap WO2018092380A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201790001421.3U CN210331307U (zh) 2016-11-15 2017-08-28 Cpap装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016-222293 2016-11-15
JP2016222293A JP2018078996A (ja) 2016-11-15 2016-11-15 Ｃｐａｐ装置

Publications (1)

Publication Number Publication Date
WO2018092380A1 true WO2018092380A1 (fr) 2018-05-24

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PCT/JP2017/030804 WO2018092380A1 (fr) 2016-11-15 2017-08-28 Dispositif cpap

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JP (1) JP2018078996A (fr)
CN (1) CN210331307U (fr)
WO (1) WO2018092380A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10859523B2 (en) 2017-09-15 2020-12-08 Ngk Spark Plug Co., Ltd. Gas sensor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4894194U (fr) * 1972-02-09 1973-11-10
JPH08503863A (ja) * 1992-09-18 1996-04-30 ピエール メディカル エス．アー． 呼吸補助装置
JPH11113809A (ja) * 1997-10-08 1999-04-27 Matsushita Electric Ind Co Ltd 電気掃除機
JP2015110149A (ja) * 2003-06-20 2015-06-18 レスメド・リミテッドＲｅｓＭｅｄＬｉｍｉｔｅｄ 加湿器を備えた呼吸可能なガス供給装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4894194U (fr) * 1972-02-09 1973-11-10
JPH08503863A (ja) * 1992-09-18 1996-04-30 ピエール メディカル エス．アー． 呼吸補助装置
JPH11113809A (ja) * 1997-10-08 1999-04-27 Matsushita Electric Ind Co Ltd 電気掃除機
JP2015110149A (ja) * 2003-06-20 2015-06-18 レスメド・リミテッドＲｅｓＭｅｄＬｉｍｉｔｅｄ 加湿器を備えた呼吸可能なガス供給装置

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Publication number Publication date
JP2018078996A (ja) 2018-05-24
CN210331307U (zh) 2020-04-17

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