A type of guided laryngoscope

Abstract

This application provides a guided laryngoscope, comprising: a gripping part, a curved part, and a tongue-lifting part. The curved part is connected to one end of the gripping part and has a guide groove for guiding an intubation tube. One end of the tongue-lifting part is connected to the end of the curved part away from the gripping part and is located on a side facing the gripping part. The other end of the tongue-lifting part extends along the curvature of the curved part. The guide groove has an inlet end and an outlet end. The first angle between the extension line of the outlet end and the central axis of the gripping part is smaller than the second angle between the extension line of the end of the tongue-lifting part and the central axis of the gripping part. This design can correct the angle at which the intubation tube sinks due to gravity after leaving the guide groove, allowing the intubation tube to directly enter the glottis for observation and airway management.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a guiding laryngoscope. BACKGROUND

[0002] The laryngoscope belongs to the endoscope in the field of medical devices, and is generally used for guiding tracheal intubation. At present, when using the laryngoscope in the prior art to guide intubation, the doctor often needs to adjust the position of the laryngoscope multiple times after entering the oral cavity to smoothly expose the glottis or to smoothly perform intubation. Especially for doctors with insufficient intubation experience, more adjustment actions are needed, and too many adjustment actions may cause strong irritation of the larynx, greater difficulty in intubation, and easy damage to the pharyngeal mucosa and the patient's teeth.

[0003] Therefore, how to reduce the adjustment actions of the doctor during the use of the laryngoscope has become a technical problem to be solved. SUMMARY

[0004] The present application provides a guiding laryngoscope, which at least solves the technical problem of how to reduce the adjustment actions of the doctor during the use of the laryngoscope in the related art.

[0005] The present application provides a guiding laryngoscope, which at least solves the technical problem of how to reduce the adjustment actions of the doctor during the use of the laryngoscope in the related art.

[0006] Optionally, the difference between the second angle and the first angle is greater than 0° and less than or equal to 4°.

[0007] Optionally, the first angle is 75° to 77°.

[0008] Optionally, the holding portion is inclined toward the tongue lifting portion.

[0009] Optionally, the guiding laryngoscope further comprises an intubation positioning portion arranged at the intubation end of the guide groove, and the intubation positioning portion is protruded toward the direction away from the holding portion.

[0010] Optionally, the guiding laryngoscope further comprises an intubation positioning portion arranged at the intubation end of the guide groove, and the intubation positioning portion is protruded toward the direction away from the holding portion.

[0011] Optionally, the guide laryngoscope further comprises a camera arranged at one side of the out-pipe end of the guide slot, a center axis of a visual angle of the camera is inclined towards a movement axis direction of the endotracheal tube after the endotracheal tube extends out of the out-pipe end of the guide slot.

[0012] Optionally, a first distance between the intersection of the center axis of the visual angle of the camera and the movement axis of the endotracheal tube and the holding part is adapted to a second distance between the incisors and the glottis.

[0013] Optionally, an included angle between the center axis of the camera and the movement axis of the endotracheal tube is 7-10°.

[0014] Optionally, the first distance is a sum of a distance between the intersection and the end of the tongue-lifting part and a distance between the end of the tongue-lifting part and the holding part.

[0015] The present application has at least the following beneficial effects:

[0016] The guide laryngoscope comprises a holding part, a bending part and a tongue-lifting part, wherein the bending part is connected to one end of the holding part, the bending part has a guide slot therein for accommodating movement of an endotracheal tube and guiding the endotracheal tube into the glottis, and the tongue-lifting part is used to lift the epiglottis of a patient to expose the glottis and guide medical staff to accurately perform endotracheal intubation. One end of the tongue-lifting part is connected to a side surface of the bending part away from the other end of the holding part towards the side of the holding part, and the other end of the tongue-lifting part extends along the bending direction of the bending part. The holding part serves as a handle of the laryngoscope, and the handle is connected to the tongue-lifting part by a bending part with a large-angle elliptical arc shape. A separate cavity is provided in the bending part as the guide slot for the endotracheal tube, so that the endotracheal tube directly enters the airway along the guide slot, improving the operability of the guide laryngoscope. Meanwhile, a first included angle between an extension line of the out-pipe end of the guide slot away from the holding part and a center axis of the holding part is smaller than a second included angle between an extension line of the end of the tongue-lifting part away from the holding part and the center axis of the holding part. That is, the direction of the out-pipe end of the guide slot away from the holding part is not parallel to the direction of the end of the tongue-lifting part away from the holding part, and the angle of the out-pipe end of the guide slot away from the holding part is larger than the angle of the end of the tongue-lifting part away from the holding part. Therefore, the angle of the endotracheal tube sinking due to gravity after the endotracheal tube extends out of the guide slot can be corrected, the angle of the endotracheal tube entering the glottis directly through the guide slot can be satisfied, and airway management can be performed. Especially for medical staff who are not skilled in operation, after the guide slot is aligned with the glottis, the endotracheal tube can directly enter the glottis without the need to adjust the angle of the laryngoscope or the angle of the endotracheal tube, thereby reducing the adjustment operation.

[0017] Further, the guiding laryngoscope further comprises a camera arranged at one side of the out-pipe end of the guiding slot, and a visual angle center axis of the camera is inclined towards a movement axis direction of the endotracheal tube after the endotracheal tube extends out of the out-pipe end of the guiding slot. The visual angle of the camera can be directed towards the endotracheal tube position, so as to facilitate guiding the endotracheal tube to the glottis, and ensure the success rate of the endotracheal tube.

[0018] Further, a first distance between the intersection of the visual angle center axis of the camera and the movement axis of the endotracheal tube and the holding part is adapted to a second distance between the incisor and the glottis, so that the intersection of the visual angle center axis of the camera and the movement axis of the endotracheal tube after the endotracheal tube extends out of the out-pipe end of the guiding slot just falls on the glottis position, that is, the position of the endotracheal tube guided out of the guiding slot is just located at the glottis position in the visual observation. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings incorporated in and forming a part of the specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application.

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, those drawings can also be obtained by those of ordinary skill in the art without any creative effort based on these drawings.

[0021] Figure 1 A schematic view of an exemplary structure of a guiding laryngoscope according to an embodiment of the present application;

[0022] Figure 2 A schematic view of the first and second angle positions and relationships according to an embodiment of the present application;

[0023] Figure 3 A schematic view of an exemplary structure of another guiding laryngoscope according to an embodiment of the present application;

[0024] Figure 4 A schematic view of the positional relationship between the visual angle center axis of the camera and the movement axis of the endotracheal tube according to an embodiment of the present application. DETAILED DESCRIPTION

[0025] In order for those of ordinary skill in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without any creative effort should fall within the scope of protection of the present application.

[0026] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0027] This application provides a guided laryngoscope, such as Figure 1 As shown, the guided laryngoscope includes a handle 1, a curved section, and a tongue levator 3. The curved section is connected to one end of the handle 1. The curved section has a guide groove 2 for accommodating the movement of the endotracheal tube and guiding it into the glottis. The tongue levator 3 is used to expose the glottis to the patient's epiglottis, guiding medical personnel to accurately perform airway intubation. One end of the tongue levator 3 is connected to the side of the curved section away from the handle 1, facing the handle 1. The other end of the tongue levator 3 extends along the curvature of the curved section. The handle 1 serves as the handle of the laryngoscope, and the handle is connected to the tongue levator 3 via a curved section with a large-angle elliptical arc. A separate cavity is created in the curved section as the endotracheal tube guide groove 2, allowing the endotracheal tube to directly enter the airway along the guide groove 2, improving the operability of the guided laryngoscope.

[0028] During laryngoscope-guided intubation, because the intubation tube is flexible and there is a distance between the outlet end 22 of the guide groove 2 and the glottis, the tube may sink due to gravity after leaving the guide groove 2. This may require additional adjustment of the laryngoscope or intubation position to ensure smooth insertion of the tube after the guide groove 2 is aligned with the glottis. Therefore, in this embodiment, if... Figure 2As shown, the first included angle a between the extension line of the outflow end 22 of the guide groove 2 away from the one end of the holding part 1 and the central axis of the holding part 1 is smaller than the second included angle β between the extension line of the tip of the tongue-lifting part 3 away from the one end of the holding part 1 and the central axis of the holding part 1. That is, the direction of the one end of the guide groove 2 away from the holding part 1 is not parallel to the direction of the tongue-lifting part 3, and the angle of the guide groove 2 away from the one end of the holding part 1 is larger than the angle of the tongue-lifting part 3 away from the one end of the holding part 1. Thus, the angle of the cannula sinking due to gravity after leaving the guide groove 2 can be corrected, and the cannula can directly enter the glottis through the guide groove 2 to meet the angle of observing the glottis, and airway management can be performed. Especially for the unskilled medical staff, after the guide groove 2 is aligned with the glottis, the cannula can directly enter the glottis without adjusting the angle of the laryngoscope or the cannula, thereby reducing the adjustment operation.

[0029] In an embodiment, since the distance between the outflow end 22 of the guide groove 2 and the glottis is small, and the flexibility of the cannula is not particularly high, the difference between the second included angle β and the first included angle a is greater than 0° and less than or equal to 4°. That is, the guide groove 2 and the tongue-lifting part 3 only need to be arranged non-parallelly, and a small angle can correct the angle of the cannula sinking due to gravity after leaving the guide groove 2, and meet the angle of the cannula directly entering the glottis through the guide groove 2 to observe the glottis.

[0030] The laryngoscope in the prior art is often L-shaped, and the included angle between the tongue-lifting part 3 and the holding part 1 is often 85° to 90°, and the holding part 1 is often vertically arranged. For skilled doctors, when the laryngoscope enters the oral cavity, a lifting action of the laryngoscope is needed to achieve better glottis exposure rate, and more adjustment actions are needed for unskilled doctors. Therefore, in order to realize the directness of the laryngoscope observing the glottis, and meet the requirement that the laryngoscope can quickly find the glottis position after directly entering the oral cavity without extra actions such as lifting, in an optional embodiment, the first included angle a is set to 75° to 77°. Through the angle setting of the first included angle a and the angle difference between the first included angle a and the second included angle β, after the laryngoscope enters the oral cavity, the cannula directly guided by the outflow end 22 of the guide groove 2 can be aligned with the glottis without extra actions.

[0031] In an embodiment, the holding part 1 is inclined towards the tongue-lifting part 3, that is, the holding part 1 and the tongue-lifting part 3 are close to each other and connected by a large-angle elliptical arc, and the holding part 1 is designed to be forward inclined. When a patient has difficulty in exposing the glottis, the holding part 1 can be backward inclined to increase the observation angle, meet the operability of the guide laryngoscope, and achieve the maximum exposure rate of observing the glottis.

[0032] In an embodiment, as shown in FIG. 6, the holding part 1 is designed to be forward inclined, and the tongue-lifting part 3 is designed to be backward inclined. Figure 3The guiding laryngoscope also comprises a tube positioning part 23 arranged at the tube entry end 21 of the guiding groove 2, i.e. at the opening of the guiding groove 2 at the end close to the holding part 1, and the tube positioning part 23 is protruded towards the direction away from the holding part 1. This ensures that the guiding groove 2 has sufficient space to ensure smooth movement of the tube and also ensures that the tube will not be separated from the guiding groove 2.

[0033] In an embodiment, as shown in Figure 3 The guiding laryngoscope also comprises a tube guiding part 24 arranged along the extension line 221 of the guiding groove 2 at the tube exit end 22. The tube guiding part 24 is arranged along the extension of the guiding groove 2 at the tube exit end 22, which can realize overall positioning of the tube, so that the tube will not be affected by the curvature of the tube itself when it reaches the tube guiding part 24 along the guiding groove 2, and the tube guiding part 24 can guide the tube to enter the glottis along the observed trajectory.

[0034] In an embodiment, in order to facilitate observation, the guiding laryngoscope can be a visual guiding laryngoscope. The visual laryngoscope can be used to lift the epiglottis of the patient to expose the glottis and guide the medical staff to accurately perform airway intubation, and can also be used to provide images for oral examination and treatment. After the laryngoscope is placed in the larynx, the structure of the larynx can be directly and clearly displayed through the display screen, and the glottis can be clearly exposed to achieve the purpose of accurate intubation.

[0035] The center axis 41 of the visual angle of the camera 4 in the related art is often parallel to the axis of the tube movement in the guiding groove 2, which causes a certain deviation between the observation point and the tube position. When intubation is performed, the laryngoscope needs to be moved to observe the position of the tube, which undoubtedly increases the unnecessary operation. Especially for inexperienced doctors, more operations may be needed to repeatedly observe the position of the tube before intubation. Therefore, in order to realize the directness of visual laryngoscope observation of the glottis and to satisfy the requirement that the laryngoscope can quickly find the position of the glottis after directly entering the oral cavity without unnecessary actions such as lifting and pulling, in the embodiment, as shown in Figure 3 and Figure 4 The guiding laryngoscope also comprises a camera 4 arranged at one side of the tube exit end 22 of the guiding groove 2, and the center axis 41 of the visual angle of the camera 4 is inclined towards the direction of the axis 5 of the tube movement after the tube extends out of the tube exit end 22 of the guiding groove 2. This can make the visual angle of the camera 4 face the position of the tube, so as to facilitate guiding the tube to the glottis and ensure the success rate of intubation.

[0036] In an embodiment, as shown in Figure 4As shown, the third angle γ between the visual angle center axis 41 of the camera 4 and the cannula movement axis 5 is 7° to 10°, that is, the camera 4 is turned 7° to 10° toward the guide groove 2 in the direction indicated by the arrow, so as to ensure that the intersection of the visual angle center axis 41 of the camera 4 and the cannula movement axis 5 is located at the glottis. In the embodiment, the third angle γ between the visual angle center axis 41 of the camera 4 and the cannula movement axis 5 can be adaptively adjusted based on the target population, for example, for children, adults, short jaw, and the like, and the third angle γ can be adaptively adjusted to 7°, 8°, 9°, or 10°.

[0037] Further, in order to ensure that the intersection of the visual angle center axis 41 of the camera 4 and the cannula movement axis 5 after the cannula extends out of the tube end 22 of the guide groove 2 is just located at the glottis, that is, to ensure that the position of the cannula along the cannula passage guide groove 2 is just located at the glottis in the view, in the embodiment, the first distance between the intersection of the visual angle center axis 41 of the camera 4 and the cannula movement axis 5 and the holding part 1 is adapted to the second distance between the incisors and the glottis.

[0038] Generally, according to the human body structure, the second distance between the incisors and the glottis of the human body is 130 mm to 150 mm, and the lower end of the holding part 1 is often placed on the incisors. Therefore, in the embodiment, the first distance between the intersection of the visual angle center axis 41 of the camera 4 and the cannula movement axis 5 and the holding part 1 is adapted to the second distance range, so that when the laryngoscope enters the oral cavity and the holding part 1 is placed on the incisors, the observation point can be locked at the entrance of the glottis, and when the cannula is guided to the visual angle focus point along the guide groove 2, the cannula can be guided to the entrance of the glottis, thereby ensuring the success rate of the cannula. In the embodiment, the first distance can be adaptively adjusted based on the target population, for example, for children, adults, short jaw, and the like.

[0039] In an embodiment, the first distance can include two parts, the first part is the distance between the holding part 1 and the end point of the tongue lifting part 3, and the second part is the distance between the end of the tongue lifting part 3 and the intersection of the visual angle center axis 41 of the camera 4 and the cannula movement axis 5. The first part distance is determined by the size of the laryngoscope, and therefore, after the first part distance is determined, the second part distance can be determined by adjusting the third angle γ between the center axis of the camera 4 and the cannula movement axis 5, so that the second part distance is within the second distance range or less than or equal to the second distance, thereby ensuring the success rate of the cannula when the cannula is guided to the visual angle focus point along the guide groove 2.

[0040] Exemplary, the camera 4 of the laryngoscope is designed to be inclined and the guide groove 2 is formed at an angle, the camera 4 is arranged at the middle of the handle 1 of the laryngoscope, and the intersection of the motion axis 5 of the intubation tube and the central axis 41 of the view angle is controlled to be about 50mm to 60mm away from the end point of the tongue lifter 3, the handle 1 is about 70mm away from the end point of the tongue lifter 3, according to the human body structure, the distance between the incisors and the glottis is about 130mm to 150mm, therefore, the distance between the focus point of the view angle and the handle 1 is about 120mm to 130mm, and the angle design of the product can successfully lock the observation point at the entrance of the glottis, when the intubation tube moves along the guide groove 2 to the focus point of the view angle, the intubation tube can be guided to the entrance of the glottis, and the success rate of the intubation tube is ensured.

[0041] The above only describes the preferred embodiments of the present application, and it should be pointed out that those skilled in the art can make several improvements and refinements without departing from the principles of the present application, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A direct laryngoscope, characterized in that The utility model relates to a kind of oral cavity insertion device, including: Grip, curved part and tongue, wherein, The curved part is connected with one end of the grip, the curved part has guide slot for guiding cannula inside, one end of the tongue is connected in the curved part away from one end of the grip, and on the side surface of the tongue towards the side of the grip, the other end of the tongue is arranged along the bending direction of the curved part extends; The guide slot has pipe end and pipe end, the extension line of the pipe end is less than the second angle of the tip of the tongue with the central axis of the grip The first angle of the grip;The second angle and the first angle difference is greater than 0 and less than or equal to 4 °;The first angle is 75 ° to 77 °; Camera is arranged in the pipe end of the guide slot, the camera angle center axis is inclined towards the cannula movement axis direction after cannula along the pipe end of the guide slot stretches out, the intersection of the camera angle center axis and the cannula movement axis is 7 ° to 10 °, the first distance between the intersection and the grip and the second distance between the incisor and the glottis are adapted, wherein The first distance is the distance between the intersection of the camera angle center axis and the cannula movement axis and the end point of the tongue and the distance between the end point of the tongue and the grip, the distance between the intersection of the cannula movement axis and the camera angle center axis and the end point of the tongue is 50 mm to 60 mm; The intersection of the camera angle center axis and the cannula movement axis after cannula along the pipe end of the guide slot stretches out falls in glottis position.

2. The guiding laryngoscope of claim 1, wherein, The grip is inclined towards the tongue direction.

3. The guiding laryngoscope of claim 1, wherein, Also include: Cannula positioning part is arranged in the pipe end of the guide slot, and the cannula positioning part is raised towards the direction away from the grip.

4. The guiding laryngoscope of claim 1, wherein, Also include: Cannula positioning part is arranged in the pipe end of the guide slot along the extension line of the pipe end.

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