Device for guiding endotracheal catheter

Abstract

The utility model discloses a device for guiding an endotracheal catheter, which comprises a shaft and a handle, and the handle is configured to be detachably connected with the shaft; the shaft comprises a far-side shaft part, a near-side shaft part and a control line; the proximal shaft portion comprises a proximal shaft portion body, a tip portion, the distal shaft portion and the proximal shaft portion are joined by a joining connection, and the control wire is at least partially disposed within the proximal shaft portion and configured to deform the tip portion; the proximal shaft part is a hollow tube body, and the optical capturing device is configured to be installed in an end face cavity of the tail end part; a first contact disposed on the shaft, the first contact being connected to a first cable connected to the optical capturing device; a second contact disposed in the handle and connected to a second cable connected to the display device; after the shaft is installed in the handle, the first contact is connected with the second contact, so that the first cable is connected with the second cable, and power is supplied to the optical capturing device to enable the optical capturing device to transmit images to the display device. According to the utility model, the insertion visualization of the guiding device is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of endotracheal tube guiding devices, in particular to a device for guiding an endotracheal tube. Background Art

[0002] Many surgical procedures are often performed while the patient is under general anesthesia. During these procedures, the patient is given a series of medications that cause loss of consciousness and muscle paralysis. The medications that cause loss of consciousness and muscle paralysis can also interfere with the patient's ability to breathe. Therefore, patients are often intubated during these procedures so that the patient can be connected to an external ventilator or breathing circuit. Patients with non-surgical conditions that require increased oxygen delivery may also be intubated. In other situations, endotracheal intubation may also be used.

[0003] During endotracheal intubation, an endotracheal tube is placed in the patient's airway. Typically, the endotracheal tube is advanced through the patient's nose or mouth into the patient's trachea, and then connected to an external ventilator or breathing circuit, which can then breathe for the patient, delivering oxygen to the patient's lungs.

[0004] The patient's vocal cords and the space between them form the entrance to the trachea, and these structures are also called the glottis. The glottis can be seen from and accessed through the pharynx. The pharynx is part of the upper airway and is located behind the patient's mouth and below the patient's nasal cavity. The mouth and nasal cavity meet in the pharynx. In addition, the esophagus and glottis can be accessed through the pharynx. During the intubation process, the endotracheal tube must be carefully advanced through the patient's pharynx and placed through the vocal cords into the trachea. In addition, it is critical that the endotracheal tube is placed at the appropriate depth when it is placed into the trachea. If it is placed shallowly in the trachea, it may fall out. If it is placed too deep, only one lung may be ventilated, resulting in poor oxygen delivery to the blood or over-ventilation of the ventilated lung and under-ventilation of the non-ventilated lung. All of these can result in injury or death to the patient.

[0005] The intubation process interferes with the patient's ability to breathe and, in turn, deliver oxygen to the body independently. If the patient is deprived of oxygen for more than two to three minutes, tissue damage may occur, which may result in death or permanent brain damage. Therefore, the intubation process must be performed quickly and accurately.

[0006] To solve the above problems, CN111936191 A discloses an introducer for use with an endotracheal intubation system, comprising a shaft, the shaft comprising: a proximal shaft portion; a distal shaft portion, the distal shaft portion comprising a distal tip portion extending from the shaft portion, the shaft comprising a plurality of qualitative depth assessment bands, each depth assessment band having a color or pattern visually different from an adjacent depth assessment band, and the tip having a circular shape and a closed end; and a control line, the control line at least partially disposed in both the distal shaft portion and the proximal shaft portion, and configured to maintain the tip portion of the proximal shaft portion in a bent configuration; a handle, the handle being detachably connected to the proximal shaft portion. The introducer allows medical professionals to quickly, accurately and safely properly position an endotracheal tube in a normal or difficult airway, and allows medical professionals to quickly, accurately and safely properly perform an endotracheal tube replacement procedure.

[0007] CN111936191 A discloses an introducer that facilitates the insertion and replacement of an endotracheal tube. However, since this operation is to push the endotracheal tube through the patient's nose or mouth into the patient's trachea, in order to perform an accurate insertion operation and make the insertion position accurate and meet the requirements during this advancement and insertion process, a visual environment must be provided for the operation, such as collecting real-time images of the insertion environment through a camera and a light source, so that the operator can accurately perform the insertion operation under a visual state. However, the currently disclosed guide devices generally do not have an integrated camera device. In order to perform a visual operation for the insertion operation of such a guide device, an independent image acquisition device is required to cooperate with the operation. Another medical device, such as a laryngoscope, is usually used to capture the image.

[0008] Therefore, it is a practical need and has corresponding significance to develop a guiding device integrated with a camera device to solve the above-mentioned defects or problems so that the guiding device can be more conveniently used for performing insertion operations. Utility Model Content

[0009] The purpose of the utility model is to overcome the shortcomings and defects of the prior art and to provide a device for guiding an endotracheal tube integrated with an optical capture device, so as to facilitate doctors to perform the insertion operation of the guiding device.

[0010] A device for guiding an endotracheal tube comprises a shaft and a handle, wherein the handle is configured to be detachably connected to the shaft; the shaft comprises a distal shaft portion, a proximal shaft portion and a control line; the distal shaft portion and the proximal shaft portion are combined by a connecting member and allow the distance between the distal shaft portion and the proximal shaft portion to be adjusted, the proximal shaft portion comprises a proximal shaft portion body and a terminal portion, the control line is at least partially disposed in the proximal shaft portion and the distal shaft portion, and is configured to deform the terminal portion; the proximal shaft portion is a hollow tube, and the device for guiding an endotracheal tube further comprises:

[0011] an optical capture device configured to be mounted in the end surface cavity of the distal end portion;

[0012] a first contact point connected to a first cable connected to the optical capture device, arranged on the shaft, and moving synchronously with the proximal shaft portion when the proximal shaft portion is separated from the distal shaft portion;

[0013] a second contact, the second contact being connected to a second cable connected to a display device, being arranged on a limit connection mechanism of the shaft in the handle, and moving synchronously with the proximal shaft portion;

[0014] After the shaft is installed in the handle, the first contact is connected to the second contact, so that the first cable is connected to the second cable to power the optical capture device, and the optical capture device transmits image data to the display device for display.

[0015] Optionally, the first contact is connected to a flexible circuit board connected to the first cable, and is connected to the first cable through the flexible circuit board.

[0016] Optionally, the combined connector includes a proximal shaft connecting portion connected to the proximal shaft portion and a distal shaft connecting portion connected to the distal shaft portion, and the first contact is arranged on the proximal shaft connecting portion.

[0017] Optionally, the limiting connection mechanism includes a proximal shaft limiting connection mechanism, the second contact is assembled on the proximal shaft limiting connection mechanism, the proximal shaft limiting connection mechanism can slide in the handle, and the proximal shaft connecting part cooperates with the proximal shaft limiting connection mechanism.

[0018] Optionally, the proximal shaft limiting connection mechanism is installed inside a mounting frame arranged in the handle and slidingly cooperates with the mounting frame.

[0019] Optionally, the first cable is arranged in a hollow cavity of the proximal shaft portion.

[0020] Optionally, a bending retaining mechanism is further included, wherein the bending retaining mechanism is installed in the hollow cavity of the proximal shaft portion and is configured to keep the terminal portion in a predetermined bending configuration in an original state.

[0021] Optionally, the bending maintaining mechanism includes a spring, one end of which is connected to the terminal portion, and the other end of which is connected to the distal side of the proximal shaft portion body.

[0022] Optionally, the terminal end portion includes a snake tube, and the proximal shaft portion body includes a hypotube, and the hypotube is connected to the snake tube via a hollow connecting column, and the snake tube and the hypotube are located inside, and a continuous surface is arranged on their outside to wrap them inside.

[0023] Optionally, the handle has a grip, and the handle includes a battery compartment, in which a power supply battery is placed.

[0024] The utility model provides a device for guiding an endotracheal tube (hereinafter referred to as a guiding device). Since an optical capture device is integrated in the end surface of the terminal portion of the proximal shaft portion, since the first contact is arranged on the shaft, and the second contact is arranged in the handle, the handle and the shaft are detachably connected. With such a design, when the shaft is separated from the handle, the cables (such as data cables and power cables) of the optical capture device will be disconnected, and when the shaft and the handle are combined together, the cables of the optical capture device will be connected, which is convenient for doctors to operate and use. During the process of inserting the guiding device, an image of the glottis position of the patient can be captured by the optical capture device and displayed by a display device. The doctor observes the display screen in real time, providing a visualized insertion picture for the doctor's operation, and facilitating the doctor's operation of inserting the guiding device. After the insertion operation is in place and the operation is completed, the handle is removed, and only the shaft of the guiding device is retained in the patient's body. At this time, the endotracheal tube to be guided is inserted from the distal end of the distal shaft portion of the shaft of the guiding device, and moves along the shaft body of the shaft until it enters the patient's body. After reaching a predetermined position in the human body, the insertion guidance of the endotracheal tube is completed.

[0025] The guide device of the present invention has a handle that can be removed, and after the handle is removed, the cables (such as data cables and power cables) of the optical capture device will be disconnected. In this way, after the doctor observes the guide device through the visual screen and places it in place at the patient's sound position, when it is necessary to guide the insertion of the endotracheal tube, after the handle is removed, there will be no exposed cables, or there will be no problem that the cables cannot be disconnected from the power supply device and the display device, which affects the insertion of the endotracheal tube. It is equivalent to retaining only one axis of the guide device without any external interference that affects the insertion of the endotracheal tube, thereby facilitating the insertion of the endotracheal tube. In addition, since the optical capture device is integrated, the insertion operation of the guide device is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a front view schematic diagram of the device for guiding an endotracheal tube of the utility model.

[0027] Figure 2 It is a side view schematic diagram of a device for guiding an endotracheal tube according to the utility model.

[0028] Figure 3 It is an exploded view of the device for guiding an endotracheal tube of the present invention.

[0029] Figure 4 This is a schematic diagram of the handle of the utility model being in a first position after being combined with the shaft.

[0030] Figure 5 It is a schematic diagram of the handle of the utility model being in the second position after being combined with the shaft.

[0031] Figure 6 It is a schematic diagram of the arrangement of the first contact points on the connecting member of the present invention.

[0032] Figure 7 It is a schematic diagram of the connection between the flexible printed circuit board arranged with the first contact point and the first cable of the present invention.

[0033] Figure 8 This is a schematic diagram of the arrangement of the second contact of the utility model on the proximal shaft limiting connection mechanism.

[0034] Fig. 9 It is a schematic diagram of the connection between the proximal shaft limiting connection mechanism and the mounting frame of the utility model.

[0035] Fig.10 It is a cross-sectional schematic diagram of the connection between the proximal shaft limiting connection mechanism and the mounting frame of the utility model.

[0036] Fig.11 It is a schematic diagram of the proximal shaft limiting connection mechanism of the utility model after being moved out of the mounting frame.

[0037] Fig.12 It is a schematic diagram of the base of the proximal shaft portion formed by connecting the hypotube and the snake tube of the utility model.

[0038] Fig.13 It is a schematic diagram of the interior of the proximal shaft portion of the present invention.

[0039] Fig.14 It is a schematic diagram of the bending deformation of the terminal end portion of the proximal shaft portion of the present invention.

[0040] Fig.15 It is a schematic diagram of the bending maintaining mechanism inside the proximal shaft portion of the present invention.

[0041] Fig.16 It is a schematic diagram of the distal shaft portion of the shaft of the present invention after the internal support strip is exposed.

[0042] Fig.17 It is a schematic diagram of the combined connecting piece of the utility model. DETAILED DESCRIPTION

[0043] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0044] A device for guiding an endotracheal tube in an embodiment of the utility model relates to a bougie that can be used with an endotracheal intubation system, also known as a catheter or a stylet, an introducer or an endotracheal tube guiding device, which is a slender bougie used to guide the placement of an endotracheal intubation tube or another device.

[0045] In some cases, the endotracheal tube of the intubated patient needs to be replaced with a new endotracheal tube. The method for this replacement process involves placing a catheter or stylet through an existing endotracheal tube until the end of the catheter or stylet enters the trachea. Then, remove the existing endotracheal tube above the catheter or stylet while leaving the catheter or stylet in place. Then the new endotracheal tube is placed on the catheter or stylet. Then the new endotracheal tube is advanced on the catheter or stylet until the end of the new endotracheal tube is correctly placed in the trachea. Then remove the catheter or stylet from the patient. Then, the new endotracheal tube is connected to an external ventilator or breathing circuit. Then, the ventilator can breathe for the patient, thereby delivering oxygen to the patient's lungs.

[0046] Many potential complications may occur during the endotracheal tube replacement procedure. For example, the tip of the catheter or stylet can cause trauma to the trachea and lungs, which may cause injury or death to the patient. Poor depth control of the tip of the catheter or stylet during the endotracheal tube replacement procedure is a contributing factor to such trauma to the trachea or lungs. Another additional potential complication is the accidental removal of the tip of the replacement catheter or stylet from the trachea during the endotracheal tube replacement procedure. This may result in the new endotracheal tube not entering the trachea, resulting in failed intubation and causing injury or death to the patient.

[0047] In the above-mentioned endotracheal intubation process, in order to facilitate the doctor to perform the insertion operation or control the insertion depth and reduce the insertion damage to the patient, a visual device is generally used to provide an image or picture of the insertion process for visual insertion operation. For example, in the prior art, in order to achieve insertion visualization, especially the insertion visualization of the guide device, an independent device such as a laryngoscope is usually used to capture the image. The doctor captures the image through the laryngoscope and observes the insertion process so as to accurately insert the guide device into place and prevent damage to the patient, such as the technology disclosed in CN110022923A and the technology disclosed in CN111936191.

[0048] like Figure 1 As shown, a device for guiding an endotracheal tube according to an embodiment of the utility model comprises a shaft 100 and a handle 200, wherein the handle 200 is configured to be detachably connected to the shaft 100; the shaft 100 comprises a distal shaft portion 120, a proximal shaft portion 110 and a control line 160; the distal shaft portion and the proximal shaft portion are combined by a connecting member 140 and allow adjustment of the distance between the distal shaft portion and the proximal shaft portion; the proximal shaft portion 110 comprises a proximal shaft portion body 102 and a terminal portion 101, wherein the control line 160 is at least partially disposed in the proximal shaft portion and the distal shaft portion and is configured to deform the terminal portion 101; the proximal shaft portion 102 is a hollow tube, and the device for guiding an endotracheal tube further comprises:

[0049] an optical capture device 130, wherein the optical capture device 130 is configured to be mounted in an end surface cavity of the terminal portion 101;

[0050] A first contact 151 is arranged on the shaft 100, and when the proximal portion is separated from the distal portion, the first contact 151 moves synchronously with the proximal portion, and the first contact 151 is connected to a first cable 152 connected to the optical capture device 130;

[0051] A second contact 272 is arranged on the limit connection mechanism of the shaft in the handle 200, the second contact 272 is connected to a second cable 273 connected to the display device 300, and when the proximal part is separated from the distal shaft part, the second contact 272 moves synchronously with the proximal shaft part;

[0052] After the shaft 100 is installed in the handle 200 and is fixed by a limiting connection mechanism, the first contact 151 is connected to the second contact 272, so that the first cable 152 is connected to the second cable 273, and the optical capture device 130 is powered, and the optical capture device 130 can transmit image data to the display device 300 for display.

[0053] In the present application, the shaft 100 can be connected to the handle 200, and the handle 200 can be located at the midpoint of the shaft 100, or at a position far enough from the terminal portion so that the guide device can be placed at a sufficient depth in the patient's body. The handle 200 is configured to hinge the terminal portion 101 of the guide device of the present application after being positioned in the patient's body to deform or bend it, and the control line 160 is configured to deform the terminal portion 101 of the proximal shaft portion 110 when the control line 160 is pulled in the distal direction of the proximal shaft portion 110. In some embodiments, the distal end of the control line 160 is connected to the distal shaft portion 120, and its proximal end is connected to the terminal portion 101 of the proximal shaft portion 110.

[0054] Since the first contact is arranged on the shaft and the second contact is arranged on the limiting connection mechanism of the shaft in the handle, the handle and the shaft are detachably connected. When the shaft is separated from the handle, the cables of the optical capture device (such as the data cable and the power cable) will be disconnected, and when the shaft is combined with the handle, the cables of the optical capture device (such as the data cable and the power cable) will be connected, so that the data cable and the power cable are connected, which is convenient for doctors to operate and use. During the process of inserting the guide device, the image of the glottis position of the patient is captured by the optical capture device and displayed by the display device. The doctor observes the display screen in real time, providing a visual insertion picture for the doctor's operation, which is convenient for the doctor to insert the guide device. After the insertion operation is in place and the operation is completed, the handle is removed, and only the guide device is retained in the patient's body. At this time, the endotracheal tube to be guided is inserted from the distal end of the distal shaft of the guide device and moves along the shaft body of the shaft until it enters the patient's body. After reaching the predetermined position in the human body, the insertion guidance of the endotracheal tube is completed.

[0055] In some embodiments, the first contact 151 is connected to the flexible circuit board 150, the flexible circuit board 150 is connected to the first cable 152, the first cable 152 is connected to the optical capture device 130, after the data line and the power line of the cable are connected, the optical capture device 130 can transmit the image data to the display device 300 for display, and the flexible circuit board 150 is arranged on the shaft 100. In some embodiments, it is arranged on the connecting member 140 of the shaft 100.

[0056] In some embodiments, the combined connector 140 includes a proximal shaft connecting portion 141 and a distal shaft connecting portion 142, which are connected and fixed to the proximal shaft body 102 and the distal shaft body respectively. The two parts of the combined connector 140 are in contact and abut against each other in the initial state. Under the action of opposite external pulling forces, they can be separated, and can automatically reset to the initial state when there is no external pulling force. Preferably, the flexible circuit board 150 is arranged on the proximal shaft connecting portion 141, and the first contact 151 connected thereto is exposed to facilitate connection with the second contact 272. When the proximal portion 110 moves apart relative to the distal shaft portion 120, the first contact 151 and the proximal shaft connecting portion 141 move synchronously with the proximal shaft portion 110 in the same direction.

[0057] In some embodiments, the distal shaft portion 120 includes a long sheet-like matrix 121 for reinforcement. The matrix 121 is a sheet-like, long strip structure that passes through the distal shaft connection portion 142 of the coupling connector 140 and enters the interior of the proximal shaft connection portion 141. Fig.17 As shown, the base 121 and the distal shaft connection part 142 are fixed by a pin 146 to form a whole. The distal shaft connection part 142 is fixed to the base 121, and a limiting pin 147 is radially installed inside the proximal shaft connection part 141. The proximal shaft connection part 141 has a sliding cavity inside, which can slide along the base 121 and can be relatively displaced with the distal shaft connection part 142, and the displacement is limited by the limiting pin 147.

[0058] In some embodiments, the second contact 272 is assembled on the proximal shaft limit connection mechanism 270 inside the handle 200, and the proximal shaft limit connection mechanism 270 can slide in the handle 200; the proximal shaft limit connection mechanism 270 cooperates with the proximal shaft connection portion 141 of the combined connector 140, and after the proximal shaft connection portion 141 of the combined connector 140 is installed in the upper limit position of the proximal shaft limit connection mechanism 270, the first contact 151 and the second contact 272 will contact and be electrically connected accordingly. At this time, the cable of the optical capture device is connected to the display device, and signals or data can be transmitted to the display device, and the display device is powered. In some embodiments, the proximal shaft limiting connection mechanism 270 has a limiting mechanism 271, which is arranged separately and protrudes from the surface of the proximal shaft limiting connection mechanism 270, and is located on both sides of the second contact 272, and cooperates with the limiting groove 143 on the outer surface of the proximal shaft connection part 141. After the proximal shaft connection part 141 is installed, it only has a vertical degree of freedom relative to the proximal shaft limiting connection mechanism 270. After limiting in this way, the proximal shaft limiting connection mechanism 270 can move synchronously with the proximal shaft part, and during the displacement process, the electrical contact connection between the first contact and the second contact is always guaranteed and will not be disconnected.

[0059] In some embodiments, the interior of the handle 200 has a distal shaft limiting connection mechanism 260 for limiting the distal shaft connection portion 142, which includes a groove with openings at both ends, and the inner wall of the groove has a limiting protrusion (not marked), which cooperates with the concave surfaces 145 on both side surfaces of the distal shaft connection portion 142 to limit the distal shaft connection portion 142 to prevent it from moving forward synchronously with the proximal shaft connection portion 142 under the operation of the handle. Under the limitation, the distal shaft connection portion 142 remains motionless in the installed fixed position. The distal shaft limiting mechanism 260 can also adopt other types of limiting structures, such as a pin-hole matching limiting structure, etc., but is not limited to this. The above is only an optional embodiment.

[0060] Since the proximal shaft limiting connection mechanism and the distal shaft limiting connection mechanism each have a limiting protrusion corresponding to the combined connection piece, after the combined connection piece is arranged in the handle, the proximal shaft connection part 141 and the distal shaft connection part 142 thereof will be limited by the proximal shaft limiting connection mechanism and the distal shaft limiting connection mechanism respectively, and during the insertion operation, the distal shaft connection part 142 is limited by the distal shaft limiting connection mechanism and maintained in the installed fixed position, and the proximal shaft connection part 141 and the proximal shaft limiting connection mechanism move forward synchronously under the action of the trigger, so that during the insertion operation, when the trigger is operated, the contact points between the first circuit board and the second circuit board will not be disconnected, but will always maintain a contact state, and will not affect the insertion visualization process.

[0061] In some embodiments, the handle has a proximal shaft body limiting mechanism 250 inside, which is a groove-shaped structure with two ends open, and is used to limit the left and right directions of the proximal shaft body 110.

[0062] In some embodiments, the proximal shaft limiting connection mechanism 270 is installed inside the mounting frame 280 arranged in the handle, and slides with the mounting frame 280 to enable the proximal shaft limiting connection mechanism 270 to slide inside the handle. The mounting frame 280 is fixed inside the handle and can be a rectangular frame. The interior of the mounting frame 280 can be matched with the protrusions 274 on opposite sides of the proximal shaft limiting connection mechanism 270 through the slide groove structure 281 to form a sliding friction structure, a sliding matching structure, or other sliding matching structures, without limitation thereto, and the above is only an optional embodiment.

[0063] In some embodiments, the first contact is a planar contact, and the second contact is a contact with a convex structure, which can facilitate contact and conduction between the first contact and the second contact and prevent poor contact.

[0064] In the present application, the optical capture device is a device for capturing images. In some embodiments, the optical capture device is a camera or an image capture sensor (such as a charge coupled device or a complementary metal oxide semiconductor). In some embodiments, the optical capture device is a digital camera. In other embodiments, the optical capture device is an optical fiber. In some further embodiments, the optical capture device is a reflector. Some further embodiments of the optical capture device are also possible, where a light source illuminates the glottis of a patient, and the optical capture device captures an optical representation of the glottis of a patient, such as an image, a video, or a light wave.

[0065] The optical capture device includes or is integrated with a light source, which is a device configured to emit or guide light toward the glottis. In some embodiments, the light source is configured to generate light. In other embodiments, the light source is configured to reflect light. Examples of the light source include light emitting diodes, incandescent bulbs, optical fibers, and reflectors.

[0066] The display device is configured to display the video, image or light wave captured by the optical capture device. In some embodiments, the display device includes a screen. In some embodiments, the display device is connected to the second circuit board through a cable, and is electrically connected to the power module, such as a battery, through a power line, and is powered by the battery. The display device can be connected through the second circuit board and the first circuit board through the contact, and the optical capture device and its light source are powered, and the image transmitted by the optical capture device is received at the same time. In some embodiments, the optical capture device can also be connected to the power module through a power line, and the power module is directly powered, and it is only connected to the display device through a data line for data transmission. In other embodiments, the display device and the handle are formed as one body. In some embodiments, the display device and the handle are arranged separately, and the handle leads to a cable electrically connected to the second circuit board for connecting to the display device, such as a power line and a data line, and then connected to the display device through the lead-out cable.

[0067] In some embodiments, the data signal may be transmitted wirelessly without including a data line. For example, in some embodiments, the video or image captured by the optical capture device is wirelessly transmitted to the display device, such as using a wireless signal transmission device to transmit the signal or image. In other embodiments, the image captured by the optical capture device may also be transmitted to the display device through one or more reflectors.

[0068] In some embodiments, the display device is a liquid crystal display. In other embodiments, the display device is a light emitting diode display or a cathode ray tube, or a touch screen display. In some embodiments, the display device is the surface of a reflector. Other embodiments of the display device are also possible. The display device is operable to receive a signal representing an image captured by the optical capture device and display the image.

[0069] In some embodiments, the proximal shaft portion is a hollow tube as a whole, and the tube body is configured as a hollow tube body to facilitate the arrangement of the cable of the optical capture device. After the cable is arranged in the tube cavity, it is concealed in the hollow cavity of the proximal shaft portion and is not exposed. As a whole, the proximal shaft portion of the shaft used to insert into the patient's body does not affect the insertion operation, and it is convenient to arrange the optical capture device, such as directly loading the optical capture device into the cavity fixed at the terminal portion and then fixing it. For example, if it is fixed by bonding, the optical capture device will not be exposed and is integrated in the terminal portion and not exposed. In some embodiments, the shape of the optical capture device is cylindrical, wherein, in some embodiments, the cross-sectional shape of the cavity of the end face of the terminal portion where the optical capture device is placed is adapted to the outer shape of the optical capture device, so that the cylindrical optical capture device can be well fixed and will not protrude from the end face of the terminal portion, forming a concealed installation.

[0070] In some embodiments, the proximal shaft portion 110 includes a continuous outer surface, the continuous outer surface wraps the base tube of the proximal shaft portion on the outside, such as using a medical rubber material to form the continuous outer surface, and preferably forming it as one piece, and the distal shaft portion may also include a continuous outer surface, wrapping the base body 121 of the distal shaft portion 120 on the outside, such as using a medical rubber material to form the continuous outer surface, and preferably forming it as one piece. In some embodiments, the terminal portion 101 includes a snake bone tube 1011 or a similar tube body, which is arranged inside as the base tube of the terminal portion of the proximal shaft portion, and the proximal shaft body 102 includes a hypotube 1021 or a similar medical tube body, which is arranged inside as the base tube of the proximal shaft body of the proximal shaft portion, and a continuous surface is arranged on the outside for wrapping.

[0071] In some embodiments, the guide device further includes a bending holding mechanism 170, which is installed in the hollow cavity of the proximal shaft portion 110 and is configured to keep the terminal portion 101 in a predetermined bending configuration in the original state, that is, in the initial state, the terminal portion 101 of the proximal shaft portion maintains a certain bending shape, rather than a straight shape, such as an arc shape. In some embodiments, the bending holding mechanism is implemented by a spring installed in the hollow cavity of the proximal shaft portion, and its structure includes a spring 171, one end of the spring is connected to the terminal portion 101, and the other end is connected to the proximal shaft The spring is connected to the distal side of the part 110, and the spring can also be realized by other similar elastomers. By leveraging the force of the spring, the terminal portion of the proximal shaft portion can be maintained in a curved configuration of a predetermined shape. In some embodiments, pull wires 172 are connected to both ends of the spring, and the pull wires 172 are connected to the terminal portion 101 and the distal side of the proximal shaft portion. Optionally, the pull wire and the proximal shaft portion are fixed by a fixing pin 105, and the fixing pin is installed through the proximal shaft portion. The pull wire at the other end of the spring can be welded to the tube body of the terminal portion (such as the snake bone tube 1011) or fixed in other ways.

[0072] In some embodiments, the snake tube 1011 of the terminal portion 101 is connected to the hypotube 1021 of the proximal shaft portion 102 through a hollow connecting column 103. The terminal portion 101 can maintain a certain bending configuration under the action of the bending holding mechanism, such as being biased along a first direction, and during the insertion operation, the control line in the shaft is moved in the distal direction by the operating handle, so that the terminal portion can be bent and deformed in a second direction opposite to the first direction, such as Fig.14 As shown, different deformation bending is achieved according to the tension of the control line.

[0073] In some embodiments, when the trigger 210 of the handle is actuated, the proximal shaft connection portion 141 of the combined connector 140 and the proximal shaft limiting connection mechanism 270 connected thereto move together in the handle 200 from an initial position to a target position, while the distal shaft connection portion 142 remains stationary under the action of the distal shaft limiting connection mechanism 260, thereby achieving separation and isolation of the proximal shaft connection portion and the distal shaft connection portion, and at the same time, the control line 160 is pulled to achieve deformation and bending control of the terminal portion 101. After the trigger 210 is reset, under the action of the bending maintaining mechanism 170, it returns to the initial position, the control line 160 is no longer tightened, and the terminal portion 101 is reset to the initial arc-shaped bending state.

[0074] In some embodiments, the upper end of the trigger 210 of the handle 200 adopts a matching structure (such as a U-shaped structure), which can be connected to the proximal shaft connection portion 141, and can be combined with the flat portion 144 on the surface of the proximal shaft connection portion 141. When it rotates, it can drive the proximal shaft connection portion 141 to move. When it rotates, it can drive the proximal shaft connection portion 141 and the proximal shaft portion 110 to move in a direction away from the distal shaft portion 120 ( Figure 1 The right side shown in the figure) causes the end portion 101 to be deformed or changed in shape in one or more directions. In use, after the handle is removed or removed from the guide device, the endotracheal tube can be passed through the guide device.

[0075] In some embodiments, the trigger can be any type of input device that causes an action to occur based on receiving an input. Other examples of the trigger can include buttons, control rods, joysticks, touch screens, etc. The trigger can be configured to be in various positions based on the input received. For example, the trigger can be configured to be in a first position (e.g., an initial static position) based on not receiving a force or input, in a second position (e.g., a deployed target position) based on receiving a force, or in any position between the first position and the second position. When in the second position, the user may be applying force against the trigger of the handle. The second position can be defined as the position when the trigger has reached its maximum movement position. In this case, the additional force applied in the same direction may no longer move the trigger. For example, the second position may occur when the movement of the trigger is blocked or stopped due to the trigger docking against the handle of the handle.

[0076] In some embodiments, the handle has an upper shell 220, and the upper shell and the lower shell 230 can be combined with a buckle structure to form a detachable structure that is easy to disassemble. The part of the upper shell used to fix the shaft can be opened to facilitate the installation, fixing and removal of the guide device. After the upper shell and the lower shell are buckled and fixed, the installed shaft can be limited at the upper end. After the shaft is installed in the handle, when the trigger 210 of the handle is rotated, the proximal shaft portion 110 moves forward ( Figure 1 As shown on the right side, the control line 160 is tightened, so that the terminal end 101 of the proximal shaft portion 110 of the control guide device can be bent and deformed.

[0077] In some embodiments, the lower housing 230 of the handle 200 has a handle 240, and the handle 240 includes a battery compartment (not shown) inside, and a power supply battery (not shown) is placed in the battery compartment to power the optical capture device and the display device. The battery is a rechargeable battery or a disposable, non-rechargeable battery, or other power supply.

[0078] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model.

[0079] Therefore, no matter from which point of view, the embodiments should be regarded as illustrative and non-restrictive, and the scope of the present invention is limited by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0080] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A device for guiding an endotracheal tube, comprising a shaft and a handle, wherein the handle is configured to be detachably connected to the shaft; the shaft comprises a distal shaft portion, a proximal shaft portion and a control wire; the distal shaft portion and the proximal shaft portion are connected by a connecting member and allow the distance between the distal shaft portion and the proximal shaft portion to be adjusted; the proximal shaft portion comprises a proximal shaft portion body and a terminal portion, the control wire is at least partially disposed in the proximal shaft portion and the distal shaft portion, and is configured to deform the terminal portion; characterized in that The proximal shaft portion is a hollow tube, and the device for guiding the endotracheal tube further comprises: an optical capture device configured to be mounted in the end surface cavity of the distal end portion; a first contact point connected to a first cable connected to the optical capture device, arranged on the shaft, and moving synchronously with the proximal shaft portion when the proximal shaft portion is separated from the distal shaft portion; a second contact, the second contact being connected to a second cable connected to a display device, being arranged on a limit connection mechanism of the shaft in the handle, and moving synchronously with the proximal shaft portion; After the shaft is fixed in the handle, the first contact is connected to the second contact, so that the first cable is connected to the second cable to power the optical capture device, and the optical capture device transmits image data to the display device for display.

2. The device for guiding an endotracheal tube according to claim 1, characterized in that: The first contact is connected to a flexible circuit board connected to the first cable, and is connected to the first cable through the flexible circuit board.

3. The device for guiding an endotracheal tube according to claim 1, characterized in that: The combined connector includes a proximal shaft connection portion connected to the proximal shaft portion and a distal shaft connection portion connected to the distal shaft portion, and the first contact is arranged on the proximal shaft connection portion.

4. The device for guiding an endotracheal tube according to claim 3, characterized in that: The limiting connection mechanism includes a proximal shaft limiting connection mechanism, the second contact is assembled on the proximal shaft limiting connection mechanism, the proximal shaft limiting connection mechanism can slide in the handle, and the proximal shaft connecting part cooperates with the proximal shaft limiting connection mechanism.

5. The device for guiding an endotracheal tube according to claim 4, characterized in that: The proximal shaft limiting connection mechanism is installed inside a mounting frame arranged in the handle and is slidably matched with the mounting frame.

6. The device for guiding an endotracheal tube according to claim 1, characterized in that: The terminal end portion includes a snake tube, and the proximal shaft portion body includes a hypotube. The hypotube is connected to the snake tube via a hollow connecting column, and a continuous surface is arranged on the outer sides of the snake tube and the hypotube.

7. The device for guiding an endotracheal tube according to claim 1, characterized in that: The first cable is disposed within the hollow cavity of the proximal shaft portion.

8. The device for guiding an endotracheal tube according to claim 1, characterized in that: The device also includes a bending maintenance mechanism, which is installed in the hollow cavity of the proximal shaft portion and is configured to keep the distal end portion in a predetermined bending configuration in an original state.

9. The device for guiding an endotracheal tube according to claim 8, characterized in that: The bending maintaining mechanism includes a spring, one end of which is connected to the terminal portion, and the other end of which is connected to the distal end side of the proximal shaft portion body.

10. The device for guiding an endotracheal tube according to claim 1, characterized in that: The handle has a grip, and the grip includes a battery compartment, in which a power supply battery is placed.

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