WO2022171181A1 - 气管导管的交换引导套件及应用 - Google Patents
气管导管的交换引导套件及应用 Download PDFInfo
- Publication number
- WO2022171181A1 WO2022171181A1 PCT/CN2022/075882 CN2022075882W WO2022171181A1 WO 2022171181 A1 WO2022171181 A1 WO 2022171181A1 CN 2022075882 W CN2022075882 W CN 2022075882W WO 2022171181 A1 WO2022171181 A1 WO 2022171181A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- joint
- inner rod
- connecting piece
- rod core
- core
- Prior art date
Links
- 238000002627 tracheal intubation Methods 0.000 claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 238000000926 separation method Methods 0.000 description 7
- 238000009423 ventilation Methods 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 206010036790 Productive cough Diseases 0.000 description 4
- 210000003802 sputum Anatomy 0.000 description 4
- 208000024794 sputum Diseases 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000012377 drug delivery Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000001647 drug administration Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 210000003437 trachea Anatomy 0.000 description 2
- 206010002091 Anaesthesia Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000037005 anaesthesia Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 210000004877 mucosa Anatomy 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 230000028327 secretion Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
Definitions
- the present invention relates to the technical field of medical devices.
- Endotracheal intubation is the insertion of an endotracheal tube into a patient's trachea, which is widely used in medical rescue and surgical anesthesia.
- Tracheal intubation involves the use of a tracheal tube for intubation and tube replacement. Since the traditional tracheal tube is relatively soft as an intubation tube, a guide core is usually required for intubation and tube replacement.
- the endotracheal intubation guide core is mainly used clinically to shape the endotracheal tube during the process of endotracheal intubation, so that the shape of the endotracheal tube can be inserted into the airway more smoothly.
- the tracheal intubation guide core currently used clinically is usually composed of a tube body and a metal wire made of medical polymer material, which is disposable, convenient to produce and inexpensive.
- the traditional tracheal intubation guide core is generally limited to shaping and has a relatively single function, which makes it difficult to meet some special operations and purposes in clinical applications.
- the length of the catheter guide core is often a constant value, and the length cannot be adjusted. When the length is not enough, it is difficult to meet the actual intubation needs. If the length is too long, the intubation operation is affected. , it will inevitably involve the conversion between various catheters, and the exchange guide cores currently used are almost all kinds of simple plastic rods, with a single model, poor versatility, and inconvenient operation during catheter conversion.
- the traditional tracheal intubation guide core is hard in texture, which may not only damage the airway mucosa, but also has poor flexibility and cannot be shaped, which affects the operation.
- Chinese patent zl201420398744.9 discloses a ventilated endotracheal intubation guiding device, which uses the guiding front end of a guiding rod body that can emit light to pre-guide, And ventilation can be performed at the same time as the intubation operation.
- Chinese patent zl201420569663.0 discloses a sprayable pre-guide rod for endotracheal intubation.
- the connecting tube at the end of the guide rod is connected with a medical syringe, so that the guide rod can administer medicine to a patient during intubation.
- the purpose of the present invention is to overcome the deficiencies of the prior art, and to provide an exchange guide kit for a tracheal tube and its application.
- the tracheal tube exchange guide kit provided by the present invention includes an inner rod core, an outer hose and a connecting assembly, the outer hose includes a fixed section and a movable section, and the connecting assembly includes a first connecting piece, a second connecting piece and a joint, and is connected with the joint through the joint.
- the connection or separation of the first connecting piece and the second connecting piece makes the movable section of the outer hose in different working states, and has the characteristics of strong versatility, good flexibility, flexible adjustment, convenient operation and easy access.
- an exchange guide kit for an endotracheal tube comprising an inner rod core, an outer hose and a connecting assembly
- the outer hose includes a fixed section fixedly mounted on the inner rod core and a movable section that is sleeved on the inner rod core and can move relative to the inner rod core
- the connecting assembly includes a first connecting piece installed on the fixed section, a second connecting piece installed on the movable section, and a second connecting piece sleeved on the inner rod core.
- a joint on the rod core for connecting the first connecting piece and the second connecting piece includes an upper joint and a lower joint, the upper joint is used for connecting or separating with the first connecting piece, and the lower joint Used to connect or separate from the second connecting piece; when the joint is separated from the first connecting piece and connected to the second connecting piece, the joint, the second connecting piece and the movable section of the outer hose can be integrated into the inner rod core It moves up and is limited by the limiting structure on the inner rod core, so that the movable section of the outer hose is pulled out relative to the inner rod core to maintain the connection with the inner rod core when extending, and the pulled out outer hose moves
- the segments can form flexible guide segments.
- the second connecting piece and the movable section of the outer hose can be pulled out relative to the inner rod core and then separated from the inner rod core.
- an opening is provided at the rear end of the outer flexible flexible section, and the outer flexible flexible section conducts ventilation and/or exerts an attractive force through the opening.
- the conversion joint also includes a conversion joint, one end of the conversion joint is connected with the second connecting piece, and the other end is connected with the interface of the external equipment; when the second connecting piece and the movable section of the outer hose are separated from the inner rod core, the The conversion adapter is connected to the aforementioned external equipment.
- the limiting structure is arranged at the rear end of the inner rod core and corresponding to the joint.
- the limiting structure passes through the limiting structure.
- the bit structure restricts movement of the joint to prevent separation of the active section of the outer hose from the inner rod core.
- the limiting structure is a protrusion arranged on the inner rod core, and the outer diameter of the protrusion is larger than the inner diameter of the lower joint of the joint and smaller than the inner diameter of the outer hose, when the lower joint is inside When the rod core moves to the protruding position, it is blocked by the protrusion to prevent the joint from separating from the inner rod core.
- first connector and the second connector are both threaded connectors; a first cavity is formed between the first connector and the inner rod core to accommodate the upper joint, and the inner wall of the first cavity is An inner thread is provided, the outer surface of the upper joint is provided with an outer thread matching the inner thread; a second cavity is formed between the second connecting piece and the inner rod core to accommodate the lower joint, the first The inner wall of the second cavity is provided with an inner thread, and the outer surface of the lower joint is provided with an outer thread matched with the inner thread.
- the joint further includes an intermediate portion connecting the upper joint and the lower joint, and the outer diameter of the intermediate portion, the outer diameter of the first connector and the outer diameter of the second connector are the same.
- one or more elastic bodies are arranged on the inner wall of the joint, the inner side of the elastic body is in contact with the outer surface of the inner rod core, and the outer side of the elastic body is in contact with the inner surface of the joint, and the joint can be limited by the elastic body anywhere in the core.
- the present invention also provides an endotracheal intubation assembly, comprising an endotracheal tube and an endotracheal tube guide core, wherein the endotracheal tube guide core is any one of the aforementioned exchange guide kits.
- the present invention has the following advantages and positive effects due to the adoption of the above technical solutions, as an example: the tracheal tube exchange guide kit includes an inner rod core, an outer hose and a connecting assembly, and the outer hose includes a fixed section and a movable section, the connection assembly includes a first connector, a second connector and a joint, and the joint is connected to or separated from the first connector and the second connector so that the outer hose movable section is in different working states, the present invention It has the characteristics of strong versatility, good flexibility, flexible adjustment, convenient operation and easy access.
- FIG. 1 is a schematic structural diagram of an exchange guide kit for a tracheal tube according to an embodiment of the present invention.
- FIG. 2 is a schematic structural diagram of the connection assembly provided by the embodiment of the present invention when each part is separated.
- FIG. 3 is a schematic structural diagram of the joint provided by the embodiment of the present invention when the joint is separated from the first connector and connected with the second connector.
- FIG. 4 is a schematic structural diagram of a limit structure and a joint matching limit provided by an embodiment of the present invention.
- FIG. 5 is a schematic structural diagram of a joint provided by an embodiment of the present invention when the joint is connected to the first connector and separated from the second connector.
- FIG. 6 is a schematic structural diagram of the second connecting piece and the movable section after being separated from the inner rod core according to an embodiment of the present invention.
- FIG. 7 is a schematic structural diagram of an endotracheal intubation assembly provided by an embodiment of the present invention.
- exchange guide kit 100 inner rod core 110, limiting structure 111; outer hose 120, fixed section 121, movable section 122, opening 122a; connecting assembly 130, first connecting piece 131, first cavity Body 131a, female thread 131b, second connector 132, second cavity 132a, female thread 132b, joint 133, upper joint 1331, male thread 1331a, lower joint 1332, male thread 1332a; conversion joint 140; tracheal tube 200.
- FIG. 1 it is a schematic structural diagram of an exchange guide kit for a tracheal tube provided by an embodiment of the present invention.
- the exchange guide kit 100 includes an inner rod core 110 , an outer hose 120 and a connecting assembly 130 .
- the inner rod core 110 is preferably a medical metal strip, such as a stainless steel wire rod, which can provide a supporting force when the endotracheal tube is inserted.
- the outer hose 120 includes a fixed section 121 fixedly mounted on the inner rod core 110 and a movable section 122 sleeved on the inner rod core 110 and capable of moving relative to the inner rod core 110 .
- the outer hose 120 has a hollow and flexible tube structure, preferably a medical PVC tube, and both ends of the tube are closed.
- the outer diameter of the outer hose is less than 3mm, and the wall thickness is preferably between 0.3-0.5mm, preferably 0.4mm.
- the outer wall of the outer hose 120 may also be provided with a scale marking line, which is convenient for the operator to know the insertion depth during operation.
- the outer hose 120 is divided into a fixed section 121 and a movable section 122 .
- the fixed section 121 can be installed at one end of the inner rod core 110 by various fixed connection methods such as hot melt, adhesive, snap connection, screw connection, etc.
- the fixed connection method should not be used as a limitation of the present invention.
- the movable section 122 is sleeved on the inner rod core 110 . Since the inner diameter of the tube is larger than the outer diameter of the inner rod core 110 , the movable section can move on the inner rod core 110 .
- the inner rod core 110 is further provided with a limiting structure to limit the movement of the movable section 122, so that the movable section 122 can maintain connection with the inner rod core 110 when it is pulled out relative to the inner rod core 110 to extend.
- the outer hose movable section 122 is used as a packaging sleeve for the inner rod core 110 when it is not extended, and can be used as a flexible guide section when changing the tube after being pulled out and extended. During the tube changing operation, the outer hose movable section 122 Insert the end into the endotracheal tube to be replaced.
- the limit is achieved through the cooperation between the connecting component 130 and the limit structure 111 .
- the connecting assembly 130 may include a first connecting piece 131 installed on the fixed section 121, a second connecting piece 132 installed on the movable section 122, and sleeved on the inner rod core 110 for connecting the aforementioned The joint 133 of the first connector and the second connector.
- the first connecting piece 131 can be sleeved on the inner rod core and fixedly installed at the connection between the fixing section 121 and the inner rod core 110
- the second connecting piece 132 can be sleeved on the inner rod core 110 and can move on the inner rod core 110
- the joint 133 is also sleeved on the inner rod core 110 and arranged between the first connecting piece 131 and the second connecting piece 132
- the joint 133 can also be inside Rod core 110 moves up.
- the connector 133 may include an upper connector 1331 and a lower connector 1332 , and the upper connector 1331 is used for connecting with the first connector 131
- the lower joint 1332 is used for connection or separation with the second connecting piece 132 . That is to say, when the joint 133 is in use, it can be detachably connected to the fixed section through the first connecting piece, and can also be detachably connected to the movable section through the second connecting piece.
- the detachable connection mode may be one or more of various connection modes such as screw connection, snap connection, and adsorption connection.
- first connecting member 131 and the second connecting member 132 can both be screwed connecting members.
- a first cavity 131 a is formed between the first connector 131 and the inner rod core 110 to accommodate the upper joint 1331
- the inner wall of the first cavity 131 a is provided with internal threads 131b
- the outer surface of the upper joint 1331 is provided with an outer thread 1331a matching the inner thread 131b
- a tight threaded connection is achieved through the outer thread 1331a and the inner thread 131b.
- a second cavity 132a is formed between the second connecting piece 132 and the inner rod core 110 to accommodate the lower joint 1332, the inner wall of the second cavity 132a is provided with internal threads 132b, and the lower joint 1332
- the outer surface is provided with an outer thread 1332a matching the inner thread 132b, and a tight screw connection is achieved through the outer thread 1332a and the inner thread 132b.
- the joint 133 may further include a middle part connecting the upper joint 1331 and the lower joint 1332 , and the outer diameter of the middle part is the same as that of the first connecting piece 131 and the outer diameter of the second connecting piece 132 .
- the outer diameter is the same, so that the joint parts can form a smoother outer surface after connecting.
- the joint 133 when the joint 133 is separated from the first connecting piece 131 and connected with the second connecting piece 132 , as shown in FIG. 3 , the joint 133 , the second connecting piece 132 and the outer hose movable section 122 can be integrated together It moves on the inner rod core 110 and is limited by the limiting structure 111 on the inner rod core 110 , so that the movable section of the outer hose is pulled out relative to the inner rod core to maintain the connection with the inner rod core when extending.
- the limiting structure 111 is disposed at the rear end of the inner rod core 110 and is disposed corresponding to the joint 133 , and the joint 133 , the second connecting piece 132 and the outer hose movable section 122 are integrally relative to the inner rod core.
- the movement of the joint 133 is restricted by the limiting structure 111 to prevent the joint 133 , the second connecting piece 132 and the movable section 122 of the outer hose from being separated from the inner rod core. In this way, the reliability of the connection is improved, and the failure to extend the guide rod caused by the separation of the movable section of the outer hose from the inner rod core during operation is avoided.
- the limiting structure 111 is preferably a protrusion disposed on the inner rod core, and the outer diameter of the protrusion is larger than the inner diameter of the lower joint 1332 of the joint 133 and is smaller than the inner diameter of the outer hose, so that when the joint 133, the second connecting piece 132 and the movable section of the outer hose 122 move on the inner rod core 110 as a whole, the lower joint 1332 of the joint 133 reaches the convex position, because The outer diameter of the bulge is larger than the inner diameter of the lower joint 1332, and the bulge cannot pass through the lower joint 1332. Due to the blocking of the bulge by the lower joint, the joint is prevented from separating from the inner rod core, thereby avoiding the outer hose Separation of the active segment from the inner rod core.
- the protrusions are raised blocks, raised rings or raised segments.
- one or more elastic bodies may also be provided on the inner wall of the joint 133, the elastic bodies are arranged between the inner rod core and the joint, the inner side of the elastic body is in contact with the outer surface of the inner rod core 110, and the elastic body The outer side is in contact with the inner surface of the joint 133, and the joint can be limited on the inner rod core by the deformation performance of the elastic body.
- the limit of the elastic body is released, The joint is movable relative to the inner rod core.
- the operator can limit the joint to any position of the inner rod through the elastic body according to the actual length, so as to limit the movable section of the outer hose connected with the joint to any position of the inner rod.
- the elastomer is a silica gel block or a silica gel tube or a silica gel ring.
- the joint 133 can also be connected to the first connecting piece 131 and separated from the second connecting piece 132 .
- the second connecting piece The piece 132 and the outer flexible flexible section 122 can also be pulled out relative to the inner rod core and then separated from the inner rod core, as shown in FIG. 6 . That is, the joint 133 is separated from the second connecting piece 132 so that the joint 133 releases the blocking of the limiting structure (protrusion), and the inner diameter of the second connecting piece 132 should allow the limiting structure 111 on the inner rod core Through this, the inner rod core can be separated from the second connecting piece 132 and the outer flexible flexible section 122 .
- one or more openings may be provided at the rear end of the outer flexible flexible section 122 as ventilation holes and/or suction holes, so that the outer flexible flexible section can be ventilated and/or sucked through the openings. / or exert attraction.
- the movable section of the outer flexible tube can be used for ventilation and/or suction, such as connecting an oxygen producing device for ventilation and oxygen absorption, or connecting a suction and suction device.
- the sputum device removes respiratory secretions or foreign bodies, or connects to the drug delivery device for drug delivery, etc.
- corresponding to the second connector 132 may further include a conversion connector 140 , one end of the conversion connector 140 can be connected with the second connector 132 , and the other end of the conversion connector 140 It is connected to the interface of the external device.
- the aforementioned external equipment is connected through the conversion joint.
- Said external equipment by way of example but not limitation, such as oxygen generating equipment, sputum suction equipment, drug delivery equipment and so on.
- the above technical solution further realizes the disassembly and separation of the movable section of the outer hose and the inner rod core through the connecting assembly.
- the cleaning and replacement of the movable section and the inner core have the characteristics of strong versatility, good flexibility, flexible adjustment and convenient operation.
- FIG. 7 another embodiment of the present invention provides an endotracheal intubation assembly.
- the endotracheal tube assembly includes an endotracheal tube 200 and an endotracheal tube guide core, and the endotracheal tube guide core is the exchange guide set 100 in the previous embodiment.
- the exchange guide set in the original state is used as the intubation guide core, and the tracheal tube is shaped during the tracheal intubation, so that the shape of the tracheal tube can be inserted into the airway more smoothly.
- the connecting assembly first operate the connecting assembly to separate the joint from the first connecting piece, so as to separate the outer flexible flexible section from the outer flexible fixed section, and then align the outer flexible flexible section with respect to the inner rod core Pull out to extend.
- the joint, the second connecting piece and the movable section of the outer hose move together on the inner rod core as a whole, until the limit structure on the inner rod core limits the joint.
- the outer flexible flexible section of the hose forms a flexible guide section.
- the end of the active section of the outer hose into the tracheal tube to be replaced (that is, the tracheal tube that has entered the airway), and extend into the middle and lower sections of the trachea; then, exit the tracheal tube to be replaced, and keep the exchange guide kit; Finally, the new tracheal tube to be inserted is put into the exchange guide kit, and the airway is inserted under its support to complete the tracheal tube replacement.
- the connection between the joint and the second connecting piece can be released so that the second connecting piece and the movable section of the outer hose can be connected to the inner rod.
- the core is separated, and then, the interface of the second connector and the external device is connected through the conversion joint, and ventilation and oxygen absorption, sputum suction and/or drug administration are performed through the opening at the tail end of the movable section of the outer hose.
- the tracheal tube 200 is preferably made of soft resin and has a spiral steel wire in the wall, and the length of the exchange guide rod 100 is greater than the length of the tracheal tube 200 .
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- Emergency Medicine (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)
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Abstract
Description
Claims (10)
- 一种气管导管的交换引导套件,其特征在于:包括内棒芯、外软管和连接组件,所述外软管包括固定安装在内棒芯上的固定段和套设在内棒芯上能够相对于内棒芯移动的活动段;所述连接组件包括安装在固定段上的第一连接件、安装在活动段上的第二连接件和套设在内棒芯上用于连接前述第一连接件和第二连接件的接头,所述接头包括上部接头和下部接头,所述上部接头用于与所述第一连接件连接或分离,所述下部接头用于与所述第二连接件连接或分离;当接头与第一连接件分离且与第二连接件连接时,所述接头、第二连接件和外软管活动段能够整体在内棒芯上移动并通过内棒芯上的限位结构进行限位,使得外软管活动段相对于内棒芯拉出以延长时保持与内棒芯的连接,所述拉出后的外软管活动段能够形成柔性引导段。
- 根据权利要求 1 所述的交换引导套件,其特征在于:当接头与第一连接件连接且与第二连接件分离时,所述第二连接件和外软管活动段能够相对于内棒芯拉出后与所述内棒芯分离。
- 根据权利要求 1 或 2 所述的交换引导套件,其特征在于:在外软管活动段的尾端设置有开孔,外软管活动段通过所述开孔进行通气和 / 或施加吸引力。
- 根据权利要求 3 所述的交换引导套件,其特征在于:还包括转化接头,所述转化接头的一端与第二连接件连接,另一端与外部设备的接口连接;当所述第二连接件和外软管活动段与内棒芯分离时,通过所述转化接头连接前述外部设备。
- 根据权利要求 1 所述的交换引导套件,其特征在于:所述限位结构设置在内棒芯的尾端并对应着所述接头设置,在接头、第二连接件和外软管活动段整体相对于内棒芯拉出时,通过所述限位结构限制接头的移动从而防止外软管活动段与所述内棒芯分离。
- 根据权利要求 5 所述的交换引导套件,其特征在于:所述限位结构为设置在内棒芯上的凸起,凸起的外径尺寸大于所述接头的下部接头的内径尺寸且小于所述外软管的内径尺寸,当下部接头在内棒芯上运动到凸起位置时被所述凸起阻挡以防止接头与所述内棒芯分离。
- 根据权利要求 1 或 2 或 4 或 5 或 6 中任一项所述的交换引导套件,其特征在于:所述第一连接件和第二连接件均为螺纹连接件;所述第一连接件与内棒芯之间形成第一腔体以容纳所述上部接头,所述第一腔体内壁设置有外螺纹,所述上部接头外表面设置有与所述外螺纹匹配的内螺纹;所述第二连接件与内棒芯之间形成第二腔体以容纳所述下部接头,所述第二腔体内壁设置有外螺纹,所述下部接头外表面设置有与所述外螺纹匹配的内螺纹。
- 根据权利要求 7 所述的交换引导套件,其特征在于:所述接头还包括连接所述上部接头和下部接头的中间部,所述中间部的外径尺寸、第一连接件的外径尺寸和第二连接件的外径尺寸相同。
- 根据权利要求 7 所述的交换引导套件,其特征在于:所述接头内壁上设置有一个或多个弹性体,所述弹性体内侧与内棒芯外表面接触,所述弹性体外侧与接头内表面接触,通过所述弹性体能够将接头限位在内棒芯的任意位置。
- 一种气管插管组件,包括气管导管和气管导管引导芯,其特征在于:所述气管导管引导芯为权利要求 1-9 中任一项所述的交换引导套件。
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CN202120370709.6 | 2021-02-11 | ||
CN202120370709.6U CN215231273U (zh) | 2021-02-11 | 2021-02-11 | 气管导管的交换引导套件及应用 |
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