WO2021174815A1 - 分腔式鼻吸管 - Google Patents

分腔式鼻吸管 Download PDF

Info

Publication number
WO2021174815A1
WO2021174815A1 PCT/CN2020/117716 CN2020117716W WO2021174815A1 WO 2021174815 A1 WO2021174815 A1 WO 2021174815A1 CN 2020117716 W CN2020117716 W CN 2020117716W WO 2021174815 A1 WO2021174815 A1 WO 2021174815A1
Authority
WO
WIPO (PCT)
Prior art keywords
pipe
cavity
nasal
split
nasal suction
Prior art date
Application number
PCT/CN2020/117716
Other languages
English (en)
French (fr)
Inventor
王泽智
关鸿杰
张根荣
Original Assignee
深圳市量子氢生物技术有限公司
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 深圳市量子氢生物技术有限公司 filed Critical 深圳市量子氢生物技术有限公司
Publication of WO2021174815A1 publication Critical patent/WO2021174815A1/zh

Links

Images

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
    • A61M16/06—Respiratory or anaesthetic masks
    • A61M16/0666—Nasal cannulas or tubing
    • A61M16/0672—Nasal cannula assemblies for oxygen therapy
    • 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
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/12—Preparation of respiratory gases or vapours by mixing different gases

Definitions

  • the invention relates to a split-cavity nasal suction tube.
  • the purpose of the present invention is to provide a split-cavity nasal suction tube, which can prevent one gas from flowing back into the storage container of the other gas along the other pipe, so as to prevent the two gases from entering the storage container of the other gas. Mix before use.
  • the split-cavity nasal suction tube includes a first pipe, a second pipe, and a pipe joint.
  • the pipe joint is provided with two cavities that are not connected to each other.
  • the two cavities are connected to the first pipe and the The respective outlet ends of the second pipes are inserted and fitted, and the outer wall of the pipe joint is provided with two nasal suction pipes, each of the cavities is matched with one nasal suction pipe, and the nasal suction pipe is matched with the pipe The cavity is connected.
  • the side walls of the air outlet ends of the first pipe and the second pipe are both provided with air outlet holes, and the air outlet holes communicate with the air inlet end of the nasal cavity suction tube.
  • the inner end of the lumen has a cylindrical shape, and the air outlet end of the first pipe/second pipe is inserted into the inner end of the lumen.
  • a ventilation gap is left between the air outlet end of the first pipe/second pipe and the inner end of the lumen, and the air inlet end of the nasal cavity suction tube is arranged at the air outlet end of the first pipe/second pipe Between the inner end of the tube cavity, the air inlet end of the nasal cavity suction tube communicates with the ventilation gap.
  • the pipe joint has a straight tubular shape, and a partition is provided inside the pipe joint, and the partition divides the inside of the pipe joint into two lumens that are not connected to each other.
  • first pipe, the second pipe, and the pipe joint are all made of soft rubber material.
  • the outer wall of the pipe joint is fixedly provided with a gripping piece.
  • the present invention has the following beneficial effects:
  • the two cavities are respectively mated with the respective outlet ends of the first pipe and the second pipe, and each of the cavities is matched with a nasal suction tube, nasal suction tube and The matched tube cavity is connected, so the transportation process of the first pipeline and the second pipeline from the respective storage container (air source) to the air outlet of the two nasal suction tubes is independent of each other, and one of the gases cannot be carried along
  • the other pipe flows countercurrently and enters the storage container (gas source) of another gas, so as to prevent the two gases from mixing before use.
  • Figure 1 is a perspective view of a split-cavity nasal suction tube
  • Figure 2 is a partial view of Figure 1;
  • Figure 3 is a partial perspective view of the connection of the first pipe, the second pipe and the pipe joint;
  • Figure 4 is a partial view of the first pipe and the second pipe
  • Figure 5 is a cross-sectional view corresponding to Figure 3;
  • Figure 6 is a partial perspective view of the connection of the first pipe, the second pipe and the pipe joint in an alternative embodiment
  • Fig. 7 is a cross-sectional view corresponding to Fig. 6.
  • a split-cavity nasal suction tube including a first pipe 1, a second pipe 2 and a pipe joint 3.
  • Two lumens that are not connected to each other are provided inside the pipe joint 3 (refer to FIG. 5 and FIG. 7), and the two lumens are respectively mated with the outlet ends of the first pipe 1 and the second pipe 2 respectively.
  • the outer wall of the pipe joint 3 is provided with two nasal suction tubes 4, and the two nasal suction tubes 4 are respectively used for inserting into the two nostrils of the nose.
  • Each tube cavity is matched with a nasal cavity suction tube 4, and the nasal cavity suction tube 4 communicates with the matched tube cavity.
  • the pipe joint 3 is provided with two lumens that are not connected to each other (refer to Figures 5 and 7), the two lumens are respectively mated with the respective outlet ends of the first pipe 1 and the second pipe 2, and each The lumen is matched with a nasal suction tube 4, and the nasal suction tube 4 communicates with the matched lumen, so that the first pipe 1 and the second pipe 2 go from their respective storage containers (air source) to the air outlets of the two nasal suction pipes 4
  • the transportation process at the location is independent of each other, and one of the gases cannot flow backward along the other pipe and enter the storage container of the other gas (at the gas source), so as to avoid the mixing of the two gases before use.
  • the side walls of the outlet ends of the first pipe 1 and the second pipe 2 are both provided with an outlet hole 5, and the outlet hole 5 communicates with the inlet end of the nasal cavity suction tube 4.
  • the inner end of the lumen is cylindrical in shape, and the air outlet end of the first pipe 1/second pipe 2 is inserted into the inner end of the lumen.
  • the air outlet 5 of the first tube 1 / second tube 2 is just along the air inlet end of the nasal cavity suction tube 4
  • the pipes are aligned in the axial direction. Therefore, it is only necessary to rotate the first pipe 1/second pipe 2 relative to the pipe joint 3 until the air outlet 5 of the nasal suction tube 4 is aligned with the air inlet end of the nasal suction tube 4 in the circumferential direction of the pipe.
  • the air hole 5 communicates with the air inlet end of the nasal suction tube 4. Since the outlet end of the first pipe 1 / second pipe 2 is inserted into the inner end of the lumen, the effective contact area between the outer wall of the first pipe 1 / second pipe 2 and the inner wall of the lumen is larger, and the connection reliability is higher.
  • the pipe joint 3 is in a straight tube shape, and a partition 32 is provided inside the pipe joint 3.
  • the partition 32 divides the inside of the pipe joint 3 into two lumens that are not connected to each other.
  • the first pipe 1, the second pipe 2 and the pipe joint 3 are all made of soft rubber material.
  • the contour of the inner wall of the lumen corresponds to the outer wall of the first pipe 1 / the second pipe 2, and the inner wall of the lumen
  • the hole diameter is slightly smaller than the outer wall hole diameter of the first pipe 1 / second pipe 2 so that the first pipe 1 / second pipe 2 can form an interference fit with the lumen to improve the reliability of the pipe connection.
  • the outer wall of the pipe joint 3 is fixedly provided with a gripping piece 6 which can be grasped by the user by hand.
  • a ventilation gap 33 is left between the outlet end of the first pipe 1/second pipe 2 and the inner end of the lumen, and the air inlet end of the nasal cavity suction tube 4 is provided in the first pipe 1/ Between the air outlet end of the second pipe 2 and the inner end of the lumen, the air inlet end of the nasal cavity suction tube 4 communicates with the ventilation gap 33.
  • the air outlet end of the first tube 1 / second tube 2 does not need to be inserted into the inner end of the lumen, which facilitates the connection between the first tube 1 / second tube 2 and the lumen.

Landscapes

  • 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)
  • Otolaryngology (AREA)
  • External Artificial Organs (AREA)

Abstract

一种分腔式鼻吸管，包括第一管道（1）、第二管道（2）和管道接头（3），管道接头（3）内部设有两个互不连通的管腔，两个管腔分别与第一管道（1）和第二管道（2）各自的出气端插接配合，管道接头（3）的外壁设有两个鼻腔吸管（4），每个管腔匹配于一个鼻腔吸管（4），鼻腔吸管（4）和与之匹配的管腔连通。第一管道（1）与第二管道（2）从各自的存放容器(气源处)至两个鼻腔吸管（4）的出气口处的输送过程是相互独立的，其中一种气体不可能沿另一根管道逆流而进入另一种气体的存放容器(气源处)，从而避免两种气体在使用前混合。

Description

分腔式鼻吸管 技术领域
本发明涉及一种分腔式鼻吸管。
背景技术
在治疗或保健过程中，有时需要将两种气体即混即用，如在麻醉过程中：为便于调控麻醉气体的用量，麻醉气体(一氧化二氮)和呼吸所需的氧气是分别输给患者的，而不会预先将一氧化二氮与氧气混合后存放。又如氢气治疗过程：由于氢气与氧气混合后存放存在危险性，用于治疗或保健用的氢气和呼吸所需的氧气也是分别输给患者的，而不会预先将氢气与氧气混合后存放。两种气体分别需要两根管道来输送，而现有技术中，该两根管道的输出端是连通的，在特定的意外状况下，其中一种气体有可能沿另一根管道逆流流入另一种气体的存放容器，使该两种气体在使用前混合，从而影响后续使用或带来危险性。
发明内容
为了克服现有技术的不足，本发明的目的在于提供一种分腔式鼻吸管，其能够避免其中一种气体沿另一根管道逆流进入另一种气体的存放容器，从而避免两种气体在使用前混合。
本发明的目的采用如下技术方案实现：
分腔式鼻吸管，包括第一管道、第二管道和管道接头，所述管道接头内部设有两个互不连通的管腔，两个所述管腔分别与所述第一管道和所述第二管道各自的出气端插接配合，所述管道接头的外壁设有两个鼻腔吸管，每个所述管腔匹配于一个所述鼻腔吸管，所述鼻腔吸管和与之匹配的所述管腔连通。
具体地，所述第一管道和所述第二管道的出气端侧壁均设有出气孔，所述 出气孔与所述鼻腔吸管的进气端连通。
具体地，所述管腔的里端形状呈圆柱体状，所述第一管道/第二管道的出气端插至所述管腔的里端。
具体地，所述第一管道/第二管道的出气端与所述管腔的里端之间留有通气间隙，所述鼻腔吸管的进气端设于第一管道/第二管道的出气端与所述管腔的里端之间，所述鼻腔吸管的进气端与所述通气间隙连通。
具体地，所述管道接头呈直管状，所述管道接头内部设有分隔部，所述分隔部将所述管道接头的内部分为两个互不连通的管腔。
具体地，所述第一管道、所述第二管道和所述管道接头均由软胶材质制成。
具体地，所述管道接头的外壁固定地设有抓持片。
相比现有技术，本发明的有益效果在于：
由于管道接头内部设有两个互不连通的管腔，两个管腔分别与第一管道和第二管道各自的出气端插接配合，且每个管腔匹配于一个鼻腔吸管，鼻腔吸管和与之匹配的管腔连通，因而第一管道与第二管道从各自的存放容器(气源处)至两个鼻腔吸管的出气口处的输送过程是相互独立的，其中一种气体不可能沿另一根管道逆流而进入另一种气体的存放容器(气源处)，从而避免两种气体在使用前混合。
附图说明
图1为分腔式鼻吸管的立体视图；
图2为图1的局部视图；
图3为第一管道、第二管道和管道接头连接处的局部透视图；
图4为第一管道、第二管道的局部视图；
图5为图3所对应的剖切视图；
图6为替代实施方式中的第一管道、第二管道和管道接头连接处的局部透视图；
图7为图6所对应的剖切视图。
图中：1、第一管道；2、第二管道；3、管道接头；32、分隔部；33、通气间隙；4、鼻腔吸管；5、出气孔；6、抓持片。
具体实施方式
下面，结合附图以及具体实施方式，对本发明做进一步描述，需要说明的是，在不相冲突的前提下，以下描述的各实施例之间或各技术特征之间可以任意组合形成新的实施例。
见图1至图7，分腔式鼻吸管，包括第一管道1、第二管道2和管道接头3。管道接头3内部设有两个互不连通的管腔(参考图5、图7)，两个管腔分别与第一管道1和第二管道2各自的出气端插接配合。管道接头3的外壁设有两个鼻腔吸管4，两个鼻腔吸管4分别用于插入鼻子的两个鼻孔。每个管腔匹配于一个鼻腔吸管4，鼻腔吸管4和与之匹配的管腔连通。
由于管道接头3内部设有两个互不连通的管腔(参考图5、图7)，两个管腔分别与第一管道1和第二管道2各自的出气端插接配合，且每个管腔匹配于一个鼻腔吸管4，鼻腔吸管4和与之匹配的管腔连通，因而第一管道1与第二管道2从各自的存放容器(气源处)至两个鼻腔吸管4的出气口处的输送过程是相互独立的，其中一种气体不可能沿另一根管道逆流而进入另一种气体的存放容器(气源处)，从而避免两种气体在使用前混合。
具体地，结合图3、图4，第一管道1和第二管道2的出气端侧壁均设有出气孔5，出气孔5与鼻腔吸管4的进气端连通。
具体地，结合图3至图5，管腔的里端形状呈圆柱体状，第一管道1/第二管 道2的出气端插至管腔的里端。作为优选技术方案，当第一管道1/第二管道2的出气端插至管腔的里端时，第一管道1/第二管道2的出气孔5刚好与鼻腔吸管4的进气端沿管道的轴向对齐，因而，只需相对管道接头3将第一管道1/第二管道2转动至其出气孔5与鼻腔吸管4的进气端沿管道的周向对齐后，即可以使出气孔5与鼻腔吸管4的进气端连通。由于第一管道1/第二管道2的出气端插至管腔的里端，第一管道1/第二管道2外壁与管腔内壁的有效接触面积较大，其连接可靠性较高。
具体地，见图5、图7，管道接头3呈直管状，管道接头3内部设有分隔部32，分隔部32将管道接头3的内部分为两个互不连通的管腔。
具体地，第一管道1、第二管道2和管道接头3均由软胶材质制成，作为优选，管腔的内壁轮廓与第一管道1/第二管道2外壁相应，且管腔的内壁孔径略小于第一管道1/第二管道2的外壁孔径，使得第一管道1/第二管道2能与管腔形成过盈配合，以提高管道连接可靠性。
具体地，管道接头3的外壁固定地设有抓持片6，抓持片6可供使用者用手抓持。
作为替代实施方式，对比图6、图7，第一管道1/第二管道2的出气端与管腔的里端之间留有通气间隙33，鼻腔吸管4的进气端设于第一管道1/第二管道2的出气端与管腔的里端之间，鼻腔吸管4的进气端与通气间隙33连通。以此替代实施方式，第一管道1/第二管道2的出气端无需插至管腔的里端，因而更便于第一管道1/第二管道2与管腔的接驳。
上述实施方式仅为本发明的优选实施方式，不能以此来限定本发明保护的范围，本领域的技术人员在本发明的基础上所做的任何非实质性的变化及替换均属于本发明所要求保护的范围。

Claims (7)

  1. 分腔式鼻吸管，其特征在于：包括第一管道、第二管道和管道接头，所述管道接头内部设有两个互不连通的管腔，两个所述管腔分别与所述第一管道和所述第二管道各自的出气端插接配合，所述管道接头的外壁设有两个鼻腔吸管，每个所述管腔匹配于一个所述鼻腔吸管，所述鼻腔吸管和与之匹配的所述管腔连通。
  2. 根据权利要求1所述的分腔式鼻吸管，其特征在于：所述第一管道和所述第二管道的出气端侧壁均设有出气孔，所述出气孔与所述鼻腔吸管的进气端连通。
  3. 根据权利要求1所述的分腔式鼻吸管，其特征在于：所述管腔的里端形状呈圆柱体状，所述第一管道/第二管道的出气端插至所述管腔的里端。
  4. 根据权利要求1所述的分腔式鼻吸管，其特征在于：所述第一管道/第二管道的出气端与所述管腔的里端之间留有通气间隙，所述鼻腔吸管的进气端设于第一管道/第二管道的出气端与所述管腔的里端之间，所述鼻腔吸管的进气端与所述通气间隙连通。
  5. 根据权利要求1所述的分腔式鼻吸管，其特征在于：所述管道接头呈直管状，所述管道接头内部设有分隔部，所述分隔部将所述管道接头的内部分为两个互不连通的管腔。
  6. 根据权利要求1所述的分腔式鼻吸管，其特征在于：所述第一管道、所述第二管道和所述管道接头均由软胶材质制成。
  7. 根据权利要求1所述的分腔式鼻吸管，其特征在于：所述管道接头的外壁固定地设有抓持片。
PCT/CN2020/117716 2020-03-04 2020-09-25 分腔式鼻吸管 WO2021174815A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010143205.0 2020-03-04
CN202010143205.0A CN111330130A (zh) 2020-03-04 2020-03-04 分腔式鼻吸管

Publications (1)

Publication Number Publication Date
WO2021174815A1 true WO2021174815A1 (zh) 2021-09-10

Family

ID=71174124

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/117716 WO2021174815A1 (zh) 2020-03-04 2020-09-25 分腔式鼻吸管

Country Status (2)

Country Link
CN (1) CN111330130A (zh)
WO (1) WO2021174815A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111330130A (zh) * 2020-03-04 2020-06-26 深圳市量子氢生物技术有限公司 分腔式鼻吸管

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1455690A (zh) * 2000-06-13 2003-11-12 斯科特实验室公司 无面罩供给吸入气体混合物以及气体取样的装置和方法
CN102762250A (zh) * 2009-09-03 2012-10-31 呼吸科技公司 用于包括具有夹带端口和/或压力特征的非密封通气界面的无创通气的方法、系统和装置
US20160175548A1 (en) * 2013-08-06 2016-06-23 Fisher & Paykel Healthcare Limited Infant cpap device, interface and system
CN108355219A (zh) * 2012-12-04 2018-08-03 马林克罗特医疗产品知识产权公司 用于在氧化氮递送期间对给药的稀释最小化的套管
CN109803707A (zh) * 2016-08-11 2019-05-24 费雪派克医疗保健有限公司 可塌缩导管、患者接口和头戴具连接器
WO2019211834A1 (en) * 2018-04-29 2019-11-07 Yeda Research And Development Co. Ltd. Non-obstructive nasal cannula
CN110770163A (zh) * 2017-02-27 2020-02-07 第三极股份有限公司 用于移动生成一氧化氮的系统和方法
CN111330130A (zh) * 2020-03-04 2020-06-26 深圳市量子氢生物技术有限公司 分腔式鼻吸管

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019051245A1 (en) * 2017-09-08 2019-03-14 Vapotherm, Inc. BIFURCATED CANNULA DEVICE
CN212651203U (zh) * 2020-03-04 2021-03-05 深圳市量子氢生物技术有限公司 分腔式鼻吸管

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1455690A (zh) * 2000-06-13 2003-11-12 斯科特实验室公司 无面罩供给吸入气体混合物以及气体取样的装置和方法
CN102762250A (zh) * 2009-09-03 2012-10-31 呼吸科技公司 用于包括具有夹带端口和/或压力特征的非密封通气界面的无创通气的方法、系统和装置
CN108355219A (zh) * 2012-12-04 2018-08-03 马林克罗特医疗产品知识产权公司 用于在氧化氮递送期间对给药的稀释最小化的套管
US20160175548A1 (en) * 2013-08-06 2016-06-23 Fisher & Paykel Healthcare Limited Infant cpap device, interface and system
CN109803707A (zh) * 2016-08-11 2019-05-24 费雪派克医疗保健有限公司 可塌缩导管、患者接口和头戴具连接器
CN110770163A (zh) * 2017-02-27 2020-02-07 第三极股份有限公司 用于移动生成一氧化氮的系统和方法
WO2019211834A1 (en) * 2018-04-29 2019-11-07 Yeda Research And Development Co. Ltd. Non-obstructive nasal cannula
CN111330130A (zh) * 2020-03-04 2020-06-26 深圳市量子氢生物技术有限公司 分腔式鼻吸管

Also Published As

Publication number Publication date
CN111330130A (zh) 2020-06-26

Similar Documents

Publication Publication Date Title
JP4348182B2 (ja) 通常とは異なる呼吸導管を有する呼吸回路、及び新鮮ガスを最適に利用するシステム及び装置
JP6284513B2 (ja) 呼吸器具及びアダプタ
US6571794B1 (en) Multi-lumen hose for respirators
US4336798A (en) Medical corrugated respiratory tube
US20120125332A1 (en) Apparatus, systems, and methods for respiratory therapy
AU2001278321B2 (en) Universal respiratory device coupler
US20220339388A1 (en) Dual-connector wye piece
JP2000516514A (ja) 換気装置
JP2005525145A (ja) 医療用コネクタ
US20040231675A1 (en) Method and apparatus for transnasal ventilation
JP2018520824A (ja) 気道を処置するためのシステムおよび方法
WO2021174815A1 (zh) 分腔式鼻吸管
US9861777B2 (en) Apparatus for control of oxygen and/or air flow to nasal prongs
CN212651203U (zh) 分腔式鼻吸管
US20110265798A1 (en) Medical device tube having spaced lumens and an associated ported adapter
US20210023320A1 (en) Laryngeal mask airway
US20100116271A1 (en) Apparatus and methods for simultaneous delivery of oxygen and inhaled medication
US11793958B2 (en) Needle based precision venturi flow-generator for positive pressure ventilation
US9027562B1 (en) Flow metering connector and system for oxygen or air flow supply to nasal cannula
CN215386744U (zh) 一种气管套管封堵训练器
CN215426749U (zh) 一种减少死腔量的婴儿麻醉螺纹管
CN216653075U (zh) 一种适用于多种供氧系统的麻醉面罩
CN219921774U (zh) 一种用于雾化给药的雾化接头
CN209751852U (zh) 用于气切手术后气道湿化和给氧的设备
CN205084036U (zh) 单腔高流量鼻导管

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20923629

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 14.02.2023)

122 Ep: pct application non-entry in european phase

Ref document number: 20923629

Country of ref document: EP

Kind code of ref document: A1