WO2014166135A1 - 多腔道一体式双重防误吸引流型喉罩 - Google Patents

多腔道一体式双重防误吸引流型喉罩 Download PDF

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Publication number
WO2014166135A1
WO2014166135A1 PCT/CN2013/075249 CN2013075249W WO2014166135A1 WO 2014166135 A1 WO2014166135 A1 WO 2014166135A1 CN 2013075249 W CN2013075249 W CN 2013075249W WO 2014166135 A1 WO2014166135 A1 WO 2014166135A1
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Prior art keywords
laryngeal mask
drainage
suction
cavity
hole
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PCT/CN2013/075249
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English (en)
French (fr)
Inventor
张�成
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浙江曙光科技有限公司
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Publication of WO2014166135A1 publication Critical patent/WO2014166135A1/zh

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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
    • A61M16/04—Tracheal tubes
    • A61M16/0434—Cuffs
    • A61M16/0445—Special cuff forms, e.g. undulated
    • 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
    • A61M16/04—Tracheal tubes
    • A61M16/0402—Special features for tracheal tubes not otherwise provided for
    • A61M16/0409—Special features for tracheal tubes not otherwise provided for with mean for closing the oesophagus
    • 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
    • A61M16/04—Tracheal tubes
    • A61M16/0402—Special features for tracheal tubes not otherwise provided for
    • A61M16/0415—Special features for tracheal tubes not otherwise provided for with access means to the stomach
    • 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
    • A61M16/04—Tracheal tubes
    • A61M16/0486—Multi-lumen tracheal tubes

Definitions

  • the present invention relates to a cannula for a trachea, and more particularly to a laryngeal mask. Background technique
  • the laryngeal mask was a device that was invented and pioneered by Brain in 1983, using a transglottic ventilation.
  • the first one is the standard laryngeal mask airway, which is also the most commonly used laryngeal mask airway in the clinic. Its basic structure includes a cuff, a supervisor and
  • the inflation tube for inflating the sac is generally provided with a venting chamber in the main tube, and the venting hole is provided on the capsular, the venting chamber is connected with the venting hole, and the inflation tube is connected with the sac. In use, the sac is firstly drained by the inflation tube.
  • the laryngeal mask is mainly used to maintain the function of the respiratory tract and cannot be drained; the second type is a laryngeal mask with a drainage tube, due to the human trachea And the esophagus meets at the throat. After the throat is placed, the end of the sac is generally located at the entrance of the esophagus.
  • the laryngeal mask with the drainage tube is generally provided with a drainage hole at the end of the capsular, and another introduction Drainage tube communicating to the hole, so that the drainage tube can be in communication with the human body after implantation laryngeal mask esophagus, draining operation can be performed while building air duct; third is dedicated intubation guide the laryngeal mask airway.
  • a drainage type throat disclosed by the applicant in the prior application No. 201210299776.9, the application publication No. CN102784431A, and the application publication date being November 21, 2012. cover.
  • the patient often produces varying degrees of sputum or other secretions, which requires the insertion of a suction tube to attract and export it.
  • the current laryngeal masks generally do not have a special suction structure, so the operation of inserting the suction tube must be additionally added during the use of the laryngeal mask, or the suction is not timely or can not be fully sucked. Inserting the suction tube is not only inconvenient, inefficient, but may cause mucosal irritation or damage. If the attraction is not timely or insufficient, it will seriously hinder the normal ventilation of the laryngeal mask or hinder the patient's spontaneous breathing before waking up. In addition, during the sucking process, since the medium is sucked away, it is actually necessary to perform ventilation at the sucking position to decompress;
  • the existing laryngeal mask generally its inflatable tube is separate from the main tube, so that the laryngeal mask will be inconvenient during the insertion process, and at the same time
  • the vertical inflation tube also easily causes certain damage to the mucous membrane
  • the entire cannula path is an angle that is approximately right angled.
  • the cross-sectional shape of the main pipe is generally circular or irregular, as the applicant's previously filed application number is 201210299776.9, the application publication number is CN102784431A, and the application publication date is November 21, 2012.
  • a drainage type laryngeal mask disclosed in the Chinese invention patent application has a cross section of the main pipe which is irregular.
  • the main body of the laryngeal mask has a wide width in the direction of opening and closing of the oral cavity, and has a small opening degree or a narrow cavity.
  • the patient's orthodontic circular or irregular shape of the laryngeal mask has a large insertion resistance and is not easy to intubate. If the doctor uses a forceful cannula, it may cause mucosal damage;
  • the current general laryngeal mask, the connection between the main tube and the cap and the cap are linear.
  • the entire cannula path is an angle of approximately right angle through the oral cannula to the throat.
  • the end of the cuff is easy to withstand the upper palate, and it is not easy to intubate.
  • the doctor needs to extend the inlet cavity by hand to lift the cuff to assist the intubation, and the operation time is relatively speaking. It is not convenient to intubate at the same time; when the front end of the capsular is against the upper jaw, if the doctor uses the forceful intubation, it is easy to cause mucosal damage;
  • the general laryngeal mask is mainly used for airway ventilation.
  • the laryngeal mask of the existing intubable intubation tube generally has no guiding structure at the position of the vent hole of the cap.
  • the tracheal intubation is replaced, the tracheal intubation is difficult to be accurately inserted into the airway, and the operation is inconvenient. And it takes a long time for intubation. Summary of the invention
  • the technical problem to be solved by the present invention is to provide a multi-chamber integrated double anti-missing suction type laryngeal mask which is easy to intubate and which can reduce the risk of inhalation of the reflux by the reflux.
  • the multi-chamber integrated double anti-missing flow type laryngeal mask comprises a main pipe, a cap is connected to the end of the main pipe, a vent hole is arranged on the cuff, a drainage hole is arranged at the end of the cuff, and a ventilation cavity is arranged in the main pipe.
  • a channel and an esophageal drainage channel the ventilation channel is in communication with the venting hole, and the esophageal drainage channel is in communication with the drainage hole, wherein the second drainage channel is further disposed in the main tube
  • a second drainage hole is disposed on the inner wall of the main pipe near the vent hole, and the second drainage channel is in communication with the second drainage hole, and the end of the main pipe is bent toward a side where the vent hole is located.
  • the multi-chamber integrated double anti-missing flow type laryngeal mask of the present invention wherein the main end has a bending angle of 9 ⁇ -179°.
  • the multi-chamber integrated double anti-missing suction type laryngeal mask of the present invention wherein the inner wall surface of the main end is provided with a guiding block, the guiding block is located at an exit position of the ventilation channel, and the guiding block is adjacent to the ventilation cavity
  • the end surface of one end of the track is a sloped surface, and the sloped surface and the inner wall surface of the air passage channel together form a bent guiding surface directed to the vent hole.
  • the multi-chamber integrated double anti-missing flow type laryngeal mask of the present invention wherein the cross-sectional profile of the main pipe is elliptical or oblong, and the long axis direction of the ellipse or the oblong is opposite to the plane of the main pipe vertical.
  • the multi-chamber integrated double anti-missing suction type laryngeal mask of the present invention wherein the main tube is further provided with a charging and discharging air passage, and the charging and discharging air passage is in communication with the capsule cavity of the cap.
  • the multi-chamber integrated double anti-missing suction type laryngeal mask further comprises a charging and discharging gas joint, and the charging and discharging gas joint comprises a connecting pipe, an indicating air bag and a check valve connected in series, the indicating air bag and the check valve A gas discharge valve is disposed on the connecting pipe, and the connecting pipe is in communication with the charging and discharging air passage.
  • the multi-chamber integrated double anti-missing suction type laryngeal mask further comprises a suction joint pipe, and the suction joint pipe communicates with the second drainage channel, and the suction adjustment hole is provided on the pipe wall of the suction joint pipe to attract A plugging head is also connected to the joint pipe.
  • the multi-chamber integrated double anti-missing suction type laryngeal mask of the present invention wherein the suction joint tube and the connecting tube are integrated.
  • the multi-chamber integrated double anti-missing suction type laryngeal mask of the present invention wherein the suction joint tube is connected with a nozzle back cover through a flexible connecting member.
  • the multi-chamber integrated double anti-missing suction type laryngeal mask of the present invention is different from the prior art in that a second drainage channel is also provided in the main body of the multi-chamber integrated double anti-missing suction type laryngeal mask.
  • the main pipe is provided with a second drainage hole on the inner wall adjacent to the vent hole, and the second drainage channel is in communication with the second drainage hole, so that the suction operation can be performed from the position of the vent hole through the second drainage channel and the second drainage hole.
  • the end of the main tube of the multi-channel integrated double anti-missing flow type laryngeal mask of the present invention is bent toward the side where the vent hole is located, and the hood is deflated before being inserted into the laryngeal mask.
  • the capsule is changed, since the cap is attached to the end of the main tube, the deformed one will also bend along with the bending section of the main tube, so that the non-linear structure with the bending can reduce the front end of the laryngeal mask when the cannula is inserted.
  • the body of the human body The probability of arrival makes it easier to insert the laryngeal mask and reduce intubation damage.
  • the bending angle of the main end of the multi-chamber integrated double anti-missing flow type laryngeal mask is 9 ⁇ ⁇ 179°
  • the shape of the structure conforming to the throat is convenient for intubation; when the guide block is provided on the inner wall of the main end of the multi-channel integrated double anti-missing flow type laryngeal mask, the multi-channel integrated double prevention of the present invention can be achieved
  • the mis-sucking flow type laryngeal mask has the function of inserting the gas cannula.
  • the bending guide surface formed by the guiding block and the ventilation channel can guide the tracheal cannula to bend and point to the vent hole, thereby facilitating accurate guiding.
  • the tracheal cannula is inserted into the trachea;
  • the cross-sectional profile of the main tube of the multi-chamber integrated double anti-missing flow type laryngeal mask of the present invention is elliptical or oblong, and the long axis direction of the ellipse or the oblong is opposite to the plane of the main tube When it is vertical, when the cannula is intubated, the short axis direction of the main section is in the opening and closing direction of the oral cavity.
  • the width of the main tube in the opening and closing direction of the oral cavity is narrower, the resistance at the time of intubation can be reduced, and it is more suitable for
  • the patient has a small degree of oral opening or a narrow cavity;
  • the multi-chamber integrated double anti-missing flow type laryngeal mask has a filling and releasing air passage in the main body, and a cavity for filling and releasing the air channel and the cap
  • the cap can be filled and deflated by the filling and deflation channel integrated with the main tube, and the intubation damage can be reduced.
  • the multi-chamber integrated double anti-missing flow type laryngeal mask of the present invention includes the attracting joint tube
  • the suction joint tube is used for connecting the suction machine, and the suction adjustment hole on the suction joint tube can be used for the finger gap contact to sense the suction force of the suction machine, thereby facilitating the adjustment of the attractive force, and when the suction force of the suction machine is adjusted, the sealing is blocked.
  • the head seals the suction adjusting hole;
  • the multi-channel integrated double anti-missing flow type laryngeal mask has a more concentrated pipeline and convenient operation when the suction joint pipe and the connecting pipe are integrated; the multi-channel integrated double prevention of the invention
  • FIG. 1 is a back view of the multi-chamber integrated double anti-missing suction type laryngeal mask of the present invention when the hidden cavity is not shown;
  • FIG. 2 is a rear view of the multi-chamber integrated double anti-missing flow type laryngeal mask of the present invention showing a hidden cavity;
  • Figure 3 is a front elevational view of the first embodiment of the multi-channel integrated double error-proof suction type laryngeal mask of the present invention
  • Figure 4 is a cross-sectional view taken along line A-A of Figure 1;
  • Figure 5 is a side elevational view of the first embodiment of the multi-channel integrated double anti-missing suction type laryngeal mask of the present invention after the right half pipe section and the component connected to the right half pipe section of the main pipe are omitted;
  • Figure 6 is a cross-sectional view of the main body of the first embodiment of the multi-channel integrated double error-proof suction flow type laryngeal mask of the present invention. detailed description
  • the first embodiment of the multi-chamber integrated double anti-missing flow type laryngeal mask of the present invention shown in FIG. 1 includes the embodiment.
  • Main tube 1 the end of the main tube 1 is connected with a cuff 2, and the cuff 2 is provided with a vent hole 21 (see Fig. 3).
  • the main tube 1 is provided with a venting channel 11 and an esophageal drainage channel 12,
  • the venting channel 11 is in communication with the venting opening 21, and the end of the capsular 2 is provided with a drainage hole 22, and the esophageal drainage channel 12 is in communication with the drainage hole 22.
  • the main tube 1 is further provided with a charging and discharging air passage 13
  • the second drainage channel 14 the filling and deflation channel 13 is in communication with the capsule cavity of the capsular 2
  • the second drainage hole 141 is disposed on the inner wall of the main pipe 1 near the vent hole 21, and the second drainage channel 14 and the first drainage channel 14
  • the two drain holes 141 are in communication.
  • the charge and discharge air passage 13 and the suction second flow passage 14 of the present embodiment are integrally formed with the main pipe 1, so that the second drainage passage 14 can be attracted.
  • the machine is connected to drain from the position of the second drainage hole 141 to prevent aspiration. Further, as shown in Fig.
  • the end of the main pipe 1 is bent toward the side where the vent hole 21 is located, and the bent portion 16 is shown in Fig. 5.
  • the bending angle of the end of the main pipe 1 is 150°, that is, the angle between the bending section 16 and the right pipe section of the bending section 16 is 150°, and the angle may be any angle between 9 ⁇ and 179°.
  • the charging and discharging air passage 13 is not necessary, that is, the charging and discharging air can be separately charged and discharged by a charging and discharging air pipe as in the prior art, instead of A charge and discharge passage 13 is provided in the main pipe 1.
  • a guide block 15 is disposed on the inner wall surface of the end of the main pipe 1, and the guide block 15 is located at the exit position of the air passage 11 and the end surface of the guide block 15 near the end of the air passage 11 is a slope.
  • the slope and the inner wall surface of the venting passage 11 together form a bent guiding surface directed toward the venting opening 21, so that the endotracheal tube can be conveniently inserted from the venting passage 11.
  • the cross-sectional profile of the main pipe 1 has an elliptical shape.
  • the long axis direction of the ellipse is perpendicular to the plane in which the main pipe 1 is located, that is, when the cuff 2 is placed in the human throat.
  • the long axis direction of the ellipse corresponds to the human lip line or the long axis direction of the ellipse is perpendicular to the direction of the human mouth opening and closing.
  • the width of the main pipe 1 in the direction in which the person's mouth is opened and closed is narrow.
  • the shape of the cross-sectional profile of the main pipe 1 may also be an oblong shape (the oblong shape is not shown in the drawing, similar to the shape of a playground track of a general school), that is, a combination of a rectangle and two semicircles The shape, the diameter of the two semicircles coincides with the two short sides of the rectangle, so that the cross section of the main pipe can be made narrower.
  • the embodiment further includes a suction joint pipe 3, and the suction joint pipe 3 communicates with the second drainage channel 14, and the suction adjustment hole 31 is provided on the pipe wall of the suction joint pipe 3.
  • a plugging head 32 is also connected to the suction joint pipe 3.
  • the embodiment further includes an inflation joint 4 including a connecting tube 41, an indication airbag 42 and a check valve 43 which are sequentially connected in series, and indicates a connection line between the airbag 42 and the check valve 43.
  • the connecting pipe 41 is in communication with the charging and discharging air passage 13.
  • the suction joint pipe 3 and the connecting pipe 41 are of a unitary structure.
  • the cable 34 is connected to the nozzle back cover 33 (the cord can be replaced by a soft plastic or other flexible connector).
  • This embodiment is similar to the existing laryngeal mask in use, first opening the deflation valve to deflate the capsular 2, and manually assisting the squeezing of the sac 2, closing the deflation valve again, and then holding the hood 2 from the hand 1
  • the patient's mouth is inserted into the throat, and then the inflator is inflated into the cuff 2 through the filling and deflation channel 13, and the cuff 2 is bulged and adhered to the laryngeal tissue, and the venting hole 21 of the cuff 2 is facing the human trachea.
  • the inlet, and the drainage hole 22 is facing the entrance of the human esophagus. Then, general ventilation and drainage operations can be performed.
  • the nozzle back cover 33 is opened, the suction head of the suction machine is connected to the rear end nozzle of the suction joint pipe 3, and then the suction machine is started.
  • the finger gradually approaches or blocks the suction adjusting hole 31 at the position of the suction adjusting hole 31 to feel the attractive force, thereby adjusting the attractive force of the suction machine, and the suction adjusting hole 31 is blocked by the sealing head 32 after the adjustment is appropriate, and further The suction prevention operation is performed from the position of the vent hole 21 by the suction machine through the second drainage channel 14 and the second drainage hole 141.
  • the suction joint pipe 3 and the inflation joint 4 are not essential, and they mainly serve as a connection and an auxiliary function, irrespective of the technical problem to be solved by the present invention.

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Abstract

多腔道一体式双重防误吸引流型喉罩涉及的是一种能够降低反流物误吸入气道风险的、易进行插管的喉罩。多腔道一体式双重防误吸引流型喉罩包括主管（1），主管（1）的末端连接有罩囊（2），罩囊（2）上设有通气孔（21），罩囊（2）的末端设有引流孔（22），主管（1）内设有通气腔道（11）和食管引流腔道（12），通气腔道（11）与通气孔（21）连通，食管引流腔道（12）与引流孔（22）连通，其中所述主管（1）内还设有第二引流腔道（14），主管（1）上在靠近通气孔（21）的内壁上设有第二引流孔（141），第二引流腔道（14）与第二引流孔（141）连通，主管（1）的末端向着通气孔（21）所在的一侧弯折。

Description

多腔道一体式双重防误吸引流型喉罩
技术领域
本发明涉及一种气管用插管， 特别是涉及一种喉罩。 背景技术
喉罩是 Brain在 1983年发明并首先提倡使用的一种采用声门外方式通气的装置。 为了提 高喉罩的临床应用效果， 目前已有三种类型的喉罩： 第一种是标准型喉罩通气道， 它也是目 前临床最为常用的喉罩通气道， 其基本结构有罩囊、 主管和为罩囊充气的充气管， 主管内一 般设有通气腔， 罩囊上设有通气孔， 通气腔与通气孔连通， 充气管与罩囊连通， 在使用时先 由充气管抽干罩囊内的空气， 罩囊变瘪， 待将喉罩插入喉部之后再由充气管向罩囊内注入规 定量的空气从而使罩囊重新鼓起， 鼓起后的罩囊能够与人体的咽喉部位组织进行较好的贴合 而形成密封， 进而通气腔与人体气管连通， 这种喉罩主要用于维持呼吸道功能， 不能进行引 流操作； 第二种是带有引流管的喉罩， 由于人的气管和食管在喉部汇合， 在置入喉部后罩囊 的末端一般位于食管的入口处， 带有引流管的喉罩一般在罩囊的末端设置引流孔， 另设有引 流管连通至引流孔， 这样在置入喉罩后引流管能与人体食管连通， 从而能够在建立通气道的 同时进行引流操作； 第三种是引导气管插管的专用喉罩通气道。 关于引流型喉罩的结构， 可 以参见本申请人在之前提出的申请号为 201210299776.9、 申请公布号为 CN102784431A、 申 请公布日为 2012年 11月 21 日的中国发明专利申请公开的一种引流型喉罩。
尽管目前的喉罩相比最初发明的喉罩在功能上进行了一定的改进， 但是目前的喉罩功能 设计也并不完善， 在有些方面仍存在缺陷， 具体描述如下：
1、 喉罩在使用过程中， 病人往往会产生不同程度的痰液或其他分泌物， 这就需要插入吸 痰管而将其吸引导出。 目前的喉罩一般不带有专门吸痰的构造， 所以要么得在喉罩的使用过 程中额外增加插入吸痰管的操作步骤， 要么吸痰不及时或者不能充分吸痰。 插吸痰管不仅操 作不便、 效率低， 而且可能会造成粘膜剌激或损伤。 而若吸引不及时或不充分， 严重的会阻 碍喉罩正常通气或阻碍病人苏醒前的自主呼吸。 另外， 吸痰过程中， 由于介质被吸走， 实际 上也需要在吸痰位置处进行通气以减压；
2、 现有的喉罩， 一般其充气管与主管是分开的， 这样喉罩在插入过程会不方便， 同时分 立的充气管也容易对粘膜造成一定的损伤；
3、 类似于前述 2中的问题， 若将一个喉罩集结多个功能， 如吸痰、 减压、 弓 I流， 则需要 多个不同用途的管道分别进行吸痰、 减压、 引流， 多个不同用途的管道若不构成一体结构， 其不仅妨碍插入过程， 而且易造成损伤；
4、 当喉罩插管时， 通过口腔插管至喉部， 整个插管路径是一个近似直角的角度。 现有的 喉罩， 其主管横截面形状一般为圆形或不规则形状， 如本申请人在之前提出的申请号为 201210299776.9、 申请公布号为 CN102784431A、 申请公布日为 2012年 11月 21 日的中国发 明专利申请公开的一种引流型喉罩， 其主管横截面即是不规则的， 这种喉罩的主管在口腔开 合方向上的宽度较宽， 对于口腔张开度较小或腔道窄小的病人， 圆形或不规则形状主管的喉 罩插入阻力较大， 不易插管， 若医生用力插管的话可能造成粘膜损伤；
5、 目前一般的喉罩， 其主管与罩囊的连接部位和罩囊均呈直线型。 而当喉罩插管时， 通 过口腔插管至喉部， 整个插管路径是一个近似直角的角度。 插管时， 在罩囊通过上下颚过程 中， 罩囊末端很容易顶住上颚， 不易插管， 通常需要医生通过用手稍微伸进口腔托起罩囊以 辅助插管， 操作时间相对来说要长， 同时插管也不方便； 当罩囊前端顶住上颚时， 若医生用 力插管容易造成粘膜损伤；
6、 目前在使用引流型喉罩对病人进行反流物吸引时， 需要插入一根胃管或吸引管进入食 道， 但是如果病人反流物较多， 插胃管或吸引管不够及时， 也会导致反流误吸造成通气困难， 操作时间较长， 也会对患者造成损害；
7、 目前一般的喉罩主要用于气道通气， 没有设置专门的内窥镜通道， 因此有些需要内窥 镜手术的病人就不能选择使用喉罩进行手术， 而需要选择通过气管插管进行通气或者切开口 而插入内窥镜， 这样增加了病人的痛苦， 损伤也较大；
8、 目前现有的可插气管插管的喉罩， 其罩囊的通气孔位置处一般无导向结构， 在更换气 管插管时， 气管插管很难准确的插入至气道中， 操作不方便， 且耗费较长的插管时间。 发明内容
本发明要解决的技术问题是提供一种能够降低反流物误吸入气道风险的、 易进行插管的 多腔道一体式双重防误吸引流型喉罩。
本发明多腔道一体式双重防误吸引流型喉罩， 包括主管， 主管的末端连接有罩囊， 罩囊 上设有通气孔， 罩囊的末端设有引流孔， 主管内设有通气腔道和食管引流腔道， 通气腔道与 所述通气孔连通， 食管引流腔道与所述引流孔连通， 其中所述主管内还设有第二引流腔道， 所述主管上在靠近通气孔的内壁上设有第二引流孔， 第二引流腔道与第二引流孔连通， 所述 主管的末端向着所述通气孔所在的一侧弯折。
本发明多腔道一体式双重防误吸引流型喉罩， 其中所述主管末端的弯折角度为 9Γ -179° 。
本发明多腔道一体式双重防误吸引流型喉罩， 其中所述主管末端的内壁壁面上设有导向 块， 导向块位于所述通气腔道的出口位置， 导向块上靠近所述通气腔道的一端的端面为斜面， 所述斜面和所述通气腔道的内壁壁面共同构成一个指向所述通气孔的弯折引导面。
本发明多腔道一体式双重防误吸引流型喉罩， 其中所述主管的横截面轮廓的形状为椭圆 形或长圆形， 所述椭圆或长圆的长轴方向与所述主管所在的平面垂直。
本发明多腔道一体式双重防误吸引流型喉罩， 其中所述主管内还设有充放气腔道， 充放 气腔道与所述罩囊的囊腔连通。
本发明多腔道一体式双重防误吸引流型喉罩， 其还包括充放气接头， 充放气接头包括依 次串联的连接管、指示气囊和单向阀， 所述指示气囊和单向阀之间的连接管路上设有放气阀， 所述连接管与所述充放气腔道连通。
本发明多腔道一体式双重防误吸引流型喉罩， 其还包括吸引接头管， 吸引接头管与所述 第二引流腔道连通， 吸引接头管的管壁上设有吸力调节孔， 吸引接头管上还连接有封堵头。
本发明多腔道一体式双重防误吸引流型喉罩， 其中所述吸引接头管与所述连接管为一体 结构。
本发明多腔道一体式双重防误吸引流型喉罩， 其中所述吸引接头管上通过柔性连接件连 接有管口后盖。
本发明多腔道一体式双重防误吸引流型喉罩与现有技术不同之处在于本发明多腔道一体 式双重防误吸引流型喉罩中主管内还设有第二引流腔道， 主管上在靠近通气孔的内壁上设有 第二引流孔， 第二引流腔道与第二引流孔连通， 这样能够通过第二引流腔道和第二引流孔从 通气孔位置处进行吸引操作， 当病人反流物较多时， 通过第二引流腔对反流物进行引流， 避 免反流误吸造成病人通气困难， 降低了反流物误吸入气道的风险， 实现了反流物和胃容物的 双重防误吸， 另外本发明多腔道一体式双重防误吸引流型喉罩中主管的末端向着通气孔所在 的一侧弯折， 在插入喉罩前， 对罩囊放气使罩囊变瘪后， 由于罩囊连接在主管的末端， 所以 变瘪后的也会随着主管的弯折段弯折， 这样带有弯折的非直线型结构能够减少插管时喉罩前 端与人体上颚的相抵几率， 从而能够更容易将喉罩插入， 且减少插管损伤。
本发明多腔道一体式双重防误吸引流型喉罩中主管末端的弯折角度为 9Γ 〜179° 时， 较 符合喉部的组织形状， 方便插管； 本发明多腔道一体式双重防误吸引流型喉罩中主管末端的 内壁壁面上设有导向块时， 能够使本发明多腔道一体式双重防误吸引流型喉罩具备插气管插 管的功能， 在插入气管插管时， 导向块与通气腔道构成的弯折引导面能够引导气管插管弯折 并指向通气孔， 从而便于准确地引导气管插管插入气管中； 本发明多腔道一体式双重防误吸 引流型喉罩中主管的横截面轮廓的形状为椭圆形或长圆形， 椭圆或长圆的长轴方向与主管所 在的平面垂直时， 在插管时， 主管截面的短轴方向在在口腔的开合方向上， 由于主管在口腔 的开合方向上的宽度更窄， 所以可以减小插管时的阻力， 更适用于口腔张开度较小或腔道窄 小的病人； 本发明多腔道一体式双重防误吸引流型喉罩中主管内设有充放气腔道， 充放气腔 道与罩囊的囊腔连通时， 能够通过与主管一体的充放气腔道对罩囊进行充放气， 可以减少插 管损伤； 本发明多腔道一体式双重防误吸引流型喉罩中包括有吸引接头管时， 吸引接头管用 于连接吸引机， 吸引接头管上的吸力调节孔能够用于手指间隙接触从而感应吸引机的吸力大 小， 从而方便调节吸引力， 当吸引机的吸引力调整好后， 由封堵头将吸力调节孔封堵； 本发 明多腔道一体式双重防误吸引流型喉罩中吸引接头管与连接管为一体结构时管线更集中， 便 于操作； 本发明多腔道一体式双重防误吸引流型喉罩中吸引接头管上通过柔性连接件连接有 管口后盖时， 不需要接吸引机时可由管口后盖将吸引接头管的管口封闭。
下面结合附图对本发明多腔道一体式双重防误吸引流型喉罩作进一步说明。 附图说明
图 1为本发明多腔道一体式双重防误吸引流型喉罩第 -个实施例未显示隐藏腔道时的背 面视图；
图 2为本发明多腔道一体式双重防误吸引流型喉罩第 -个实施例显示隐藏腔道时的背面 视图；
图 3为本发明多腔道一体式双重防误吸引流型喉罩第- 个实施例的正面视图； 图 4为图 1中的 A-A剖面视图；
图 5为本发明多腔道一体式双重防误吸引流型喉罩第 -个实施例略去主管右半管段和与 主管右半管段相连的零部件之后的侧面视图；
图 6为本发明多腔道一体式双重防误吸引流型喉罩第- 个实施例中主管的剖视图。 具体实施方式
如图 1所示的本发明多腔道一体式双重防误吸引流型喉罩第一个实施例， 本实施例包括 主管 1， 主管 1的末端连接有罩囊 2， 罩囊 2上设有通气孔 21 (参见图 3 )， 如图 2所示， 主 管 1 内设有通气腔道 11和食管引流腔道 12， 通气腔道 11与通气孔 21连通， 罩囊 2的末端 设有引流孔 22， 食管引流腔道 12与引流孔 22连通， 在本实施例中， 主管 1内还设有充放气 腔道 13和第二引流腔道 14， 充放气腔道 13与罩囊 2的囊腔连通， 主管 1上在靠近通气孔 21 的内壁上设有第二引流孔 141， 第二引流腔道 14与第二引流孔 141连通。 这样本实施例的起 充放气作用的充放气腔道 13和起吸引作用的第二引流腔道 14就均与主管 1呈一体结构了， 这样就能将第二引流腔道 14与吸引机连通而从第二引流孔 141位置处引流， 从而防误吸。另 外， 如图 5所示， 主管 1的末端向着通气孔 21所在的一侧弯折， 图 5中示出了弯折段 16。 这样当罩囊 2放气变瘪时其形状也会像弯折段 16—样弯折。本实施例中主管 1末端的弯折角 度为 150° ，即弯折段 16与弯折段 16右边管段的夹角为 150° ，该角度还可以为 9Γ 至 179° 之间的任意角度。本实施例中，为解决本发明所要解决的问题，充放气腔道 13并不是必须的， 即可以像现有技术一样由一条充放气管单独对罩囊 2进行充放气， 而不是非得在主管 1内设 置充放气腔道 13。
进一步地， 如图 3所示， 主管 1末端的内壁壁面上设有导向块 15， 导向块 15位于通气 腔道 11的出口位置， 导向块 15上靠近通气腔道 11的一端的端面为斜面， 参见图 6， 该斜面 和通气腔道 11的内壁壁面共同构成一个指向通气孔 21的弯折引导面， 这样可以便利地从通 气腔道 11内插入气管插管。
进一步地， 如图 4所示， 主管 1的横截面轮廓的形状为椭圆形， 参见图 5， 该椭圆的长 轴方向与主管 1所在的平面垂直， 也就是说当罩囊 2置入人体喉部后， 该椭圆的长轴方向与 人的嘴唇线对应或者说该椭圆的长轴方向与人的口腔开合方向垂直。 这样， 主管 1在人的口 腔开合方向上的宽度就比较窄。 另外， 主管 1的横截面轮廓的形状还可以为长圆形 （长圆形 在图中未示出，类似于一般学校的操场跑道的形状），即一个矩形与两个半圆形组合后的形状， 两个半圆的直径分别与矩形的两条短边重合， 这样同样能够达到主管横截面更狭长的作用。
进一步地， 参见图 1、 图 2和图 3， 本实施例还包括吸引接头管 3， 吸引接头管 3与第二 引流腔道 14连通， 吸引接头管 3的管壁上设有吸力调节孔 31， 吸引接头管 3上还连接有封 堵头 32。 如图 1所示， 本实施例还包括充气接头 4， 充气接头 4包括依次串联的连接管 41、 指示气囊 42和单向阀 43， 指示气囊 42和单向阀 43之间的连接管路上设有放气阀 （放气阀 在图中未示出， 起其的作用是当需要对罩囊放气时给出一个放气出口， 当不需要放气时将该 放气出口堵住， 其可以参见申请号为 201210299776.9的专利申请中的放气阀）， 连接管 41与 充放气腔道 13连通。 本实施例中吸引接头管 3与连接管 41为一体结构。 吸引接头管 3上通 过线绳 34连接有管口后盖 33 (线绳可以由软塑料或者其它柔性连接件替代）。
本实施例在使用时与现有喉罩相似， 先打开放气阀对罩囊 2放气， 并用手辅助捏瘪罩囊 2， 将放气阀重新关上， 然后手持主管 1将罩囊 2从病人口腔插入喉部， 之后由充气装置经充 放气腔道 13向罩囊 2内充气， 罩囊 2鼓起并与喉部组织贴合， 此时罩囊 2的通气孔 21正对 人体气管的进口， 且引流孔 22正对人体食管的进口。接着就即可以进行一般的通气操作和引 流操作。 本实施例可以在需要从第二引流孔 141引流时（或者事先）将管口后盖 33打开， 将 吸引机的吸引头与吸引接头管 3的后端管口相连， 然后启动吸引机， 用手指在吸力调节孔 31 位置处逐渐接近或封堵吸力调节孔 31以感觉吸引力的大小， 从而调整吸引机的吸引力， 在调 整合适后由封堵头 32将吸力调节孔 31封堵， 进而由吸引机通过第二引流腔道 14、 第二引流 孔 141从通气孔 21位置进行防误吸引流操作。
本实施例中， 吸引接头管 3和充气接头 4并不是必须的， 它们主要起连接和辅助作用， 与本发明要解决的技术问题无关。
以上所述的实施例仅仅是对本发明的优选实施方式进行描述， 并非对本发明的范围进行 限定， 在不脱离本发明设计精神的前提下， 本领域普通技术人员对本发明的技术方案作出的 各种变形和改进， 均应落入本发明权利要求书确定的保护范围内。

Claims

权 利 要 求 书
1、 一种多腔道一体式双重防误吸引流型喉罩， 包括主管 （1)， 主管 （1) 的末端连接有 罩囊 （2)， 罩囊 （2) 上设有通气孔 （21)， 罩囊 （2) 的末端设有引流孔 （22)， 主管 （1) 内 设有通气腔道 （11)和食管引流腔道 （12)， 通气腔道 （11) 与所述通气孔 （21) 连通， 食管 引流腔道 （12) 与所述引流孔（22)连通， 其特征在于： 所述主管 （1) 内还设有第二引流腔 道 （14)， 所述主管 （1) 上在靠近通气孔 （21) 的内壁上设有第二引流孔 （141)， 第二引流 腔道 （14) 与第二引流孔 （141) 连通， 所述主管 （1) 的末端向着所述通气孔 （21) 所在的 一侧弯折。
2、 根据权利要求 1所述的多腔道一体式双重防误吸引流型喉罩， 其特征在于： 所述主管 (1) 末端的弯折角度为 9Γ ~179° 。
3、 根据权利要求 2所述的多腔道一体式双重防误吸引流型喉罩， 其特征在于： 所述主管 (1) 末端的内壁壁面上设有导向块 （15)， 导向块 （15) 位于所述通气腔道 （11) 的出口位 置， 导向块 （15) 上靠近所述通气腔道 （11) 的一端的端面为斜面， 所述斜面和所述通气腔 道 （11) 的内壁壁面共同构成一个指向所述通气孔 （21) 的弯折引导面。
4、 根据权利要求 3所述的多腔道一体式双重防误吸引流型喉罩， 其特征在于： 所述主管 (1) 的横截面轮廓的形状为椭圆形或长圆形， 所述椭圆或长圆的长轴方向与所述主管 （1) 所在的平面垂直。
5、 根据权利要求 4所述的多腔道一体式双重防误吸引流型喉罩， 其特征在于： 所述主管 (1) 内还设有充放气腔道 （13)， 充放气腔道 （13) 与所述罩囊 （2) 的囊腔连通。
6、 根据权利要求 5所述的多腔道一体式双重防误吸引流型喉罩， 其特征在于： 还包括充 放气接头（4)， 充放气接头（4)包括依次串联的连接管（41)、指示气囊（42)和单向阀（43)， 所述指示气囊 （42) 和单向阀 （43) 之间的连接管路上设有放气阀， 所述连接管 （41) 与所 述充放气腔道 （13) 连通。
7、 根据权利要求 6所述的多腔道一体式双重防误吸引流型喉罩， 其特征在于： 还包括吸 引接头管 （3)， 吸引接头管 （3) 与所述第二引流腔道 （14) 连通， 吸引接头管 （3) 的管壁 上设有吸力调节孔 （31)， 吸引接头管 （3) 上还连接有封堵头 （32)。
8、 根据权利要求 7所述的多腔道一体式双重防误吸引流型喉罩， 其特征在于： 所述吸引 接头管 （3) 与所述连接管 （41) 为一体结构。
9、 根据权利要求 8所述的多腔道一体式双重防误吸引流型喉罩， 其特征在于： 所述吸引 接头管 （3) 上通过柔性连接件连接有管口后盖 （33)t
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