Visual guide type laryngoscope
By tilting the camera's field of view center axis and light source within the laryngoscope and optimizing the intubation path design, the difficulty of using the laryngoscope during intubation was solved, achieving efficient and accurate intubation operations.
Patent Information
- Application Number
- CN202423023135.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2034-12-09
AI Technical Summary
Existing laryngoscopes present difficulties in use during intubation, especially since the central axis of the camera's field of view is parallel to the axis of movement of the intubation tube, which leads to deviation in the intubation position and increases the difficulty of operation.
Design a visually guided laryngoscope with the camera's central axis of view tilted towards the intubation movement axis. The light source coincides with the intubation movement axis. The distance between the intersection of the intubation movement axis and the central axis of view and the tip of the levator lens is adapted to different populations. The tube exit end is tilted to correct gravity sinking. The intubation positioning and guiding parts optimize the intubation path.
It reduces the difficulty of intubation, increases the success rate of intubation, eliminates the need for repeated adjustments to the laryngoscope position, adapts to the needs of different users, and enhances the convenience and accuracy of operation.
Smart Images
Figure CN223831072U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of medical device technology, specifically to a visually guided laryngoscope. Background Technology
[0002] A laryngoscope is a type of endoscope used in the medical device field, generally for guiding endotracheal intubation. A video-guided laryngoscope can reduce the difficulty of endotracheal intubation. Clinically, it allows the epiglottis to be lifted to expose the glottis, guiding medical staff to accurately perform airway intubation. It can also be used to provide images for intraoral examination and treatment. After the laryngoscope is inserted into the larynx, the laryngeal structures can be clearly displayed on the screen, and the glottis can be clearly exposed, achieving the goal of accurate intubation.
[0003] In related technologies, the central axis of the camera's field of view is often parallel to the axis of the cannula's movement in the guide groove. The camera is often set on one side of the cannula's guide groove. This causes a deviation between the camera's observation point and the cannula's position after the cannula extends along the guide groove and reaches the cannula's position. The cannula's position does not fall into the center area of the video. When performing cannula, it is often necessary to move the laryngoscope, which increases the difficulty of cannula, especially for doctors who are not skilled in the operation. They may need to perform more operations to repeatedly observe the cannula's position before performing cannula.
[0004] Therefore, reducing the difficulty for doctors in using laryngoscopes has become an urgent technical problem to be solved. Utility Model Content
[0005] This application provides a visually guided laryngoscope, which at least solves the technical problem of how to reduce the difficulty for doctors in using laryngoscopes in related technologies.
[0006] This application provides a visually guided laryngoscope, comprising: a handle; a guide portion integrally connected to the handle and curved in an arc shape, having a guide groove for inserting a tube, the guide groove having an inlet end and an outlet end; a levator lens, extending from the end of the guide portion away from the handle and towards the handle; a camera, disposed on one side of the outlet end of the guide groove, the central axis of the camera's field of view inclined toward the direction of the tube's movement axis after the tube extends along the outlet end of the guide groove; and a light source disposed on one side of the camera.
[0007] Optionally, the first distance between the intersection of the center axis of the viewing angle and the axis of the insertion movement and the tip of the tongue-lifting lens has a first preset distance for adapting to different groups of people.
[0008] Optionally, the first distance between the intersection of the center axis of the viewing angle and the axis of the insertion movement and the tip of the lifting lens is 50-60mm.
[0009] Optionally, the sum of the second distance between the handle and the lens tip and the first distance has a second preset distance for adapting to different groups of people from incisors to glottis.
[0010] Optionally, the outlet tube is tilted toward the mirror tip.
[0011] Optionally, the angle between the extension line of the tube outlet and the extension line of the lens tip is 1° to 4°.
[0012] Optionally, the angle between the extension line of the lens tip and the central axis of the handle is 75° to 77°.
[0013] Optionally, a cannula positioning part is provided at the inlet end of the guide groove, and the cannula positioning part protrudes in a direction away from the handle.
[0014] Optionally, the visually guided laryngoscope further includes a cannula positioning part, which extends along the extension line of the cannula end at the outlet end of the guide groove.
[0015] Optionally, the intersection of the optical axis of the light source and the axis of motion of the insertion tube coincides with the intersection of the center axis of the field of view of the camera and the axis of motion of the insertion tube.
[0016] This application has at least the following beneficial effects:
[0017] The camera is positioned on one side of the tube outlet end of the guide groove. The center axis of the camera's field of view is set to be non-parallel to the tube movement axis. With the camera facing the direction of the tube movement axis, the camera's field of view is directed towards the tube position. During the tube insertion operation, the tube position can be in the center area of the video captured by the camera. Therefore, there is no need to repeatedly move the laryngoscope to observe the tube position. This makes it easier to guide the tube to the glottis, reduces the difficulty of tube insertion, and ensures the success rate of tube insertion. Attached Figure Description
[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.
[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of an exemplary structure of a visually guided laryngoscope as described in an embodiment of this application;
[0021] Figure 2This is a schematic diagram showing the positional relationship between the center axis of the viewing angle and the axis of cannulation movement as described in the embodiments of this application;
[0022] Figure 3 This is a schematic diagram showing the positional relationship between the extension line of the tube outlet end and the extension line of the lens tip as described in the embodiments of this application.
[0023] Figure 4 This is a schematic diagram of an exemplary structure of another visually guided laryngoscope as described in an embodiment of this application. Detailed Implementation
[0024] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.
[0025] 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.
[0026] This application provides a visually guided laryngoscope, such as... Figures 1 to 4 As shown, the visually guided laryngoscope includes a handle 1, a guide section integrally connected to the handle 1 and curved in an arc shape, with a guide groove 2 for intubation, the guide groove 2 having an inlet end 21 and an outlet end 22; a tongue lifter 3, extending from the end of the guide section away from the handle 1 and towards the side of the handle 1; a camera 4, located on one side of the outlet end 22 of the guide groove 2, the central axis 41 of the camera 4 being inclined toward the direction of the intubation movement axis 5 after the intubation extends along the outlet end of the guide groove; and a light source located on one side of the camera.
[0027] In this embodiment, the camera 4 is located on one side of the tube outlet end of the guide groove 2. The center axis 41 of the viewing angle of the camera 4 is set to be non-parallel to the tube movement axis 5. The camera 4 faces the direction of the tube movement axis 5, so that the viewing angle of the camera 4 is towards the tube position. When performing tube insertion, the tube position can be in the center area of the video captured by the camera 4. Therefore, there is no need to repeatedly move the laryngoscope to observe the tube position. It is easier to guide the tube to the glottis, reduce the difficulty of tube insertion, and ensure the success rate of tube insertion.
[0028] In one embodiment, the first distance between the intersection of the central axis of the viewing angle 41 and the intubation movement axis and the tip 31 of the tongue lifter 3 has a first preset distance for adapting to different populations. To ensure that the intersection of the central axis of the camera's viewing angle 41 and the intubation movement axis 5 after the intubation extends along the guide groove 2 falls precisely at the glottis position, i.e., to ensure that the intubation exits along the guide groove 2 exactly at the glottis position observed in the view, in this embodiment, the first distance between the intersection of the central axis of the camera's viewing angle 41 and the intubation movement axis 5 and the tip 31 of the tongue lifter 3 can adapt to different types of populations. In this embodiment, the visually guided laryngoscope can be divided into various types of laryngoscopes according to different populations, including adults, children, and toddlers. Different types of laryngoscopes correspond to different user groups; the first distance is larger for adults and smaller for children and toddlers.
[0029] The first distance between the intersection of the central axis 41 of the viewing angle and the axis of insertion movement 5 and the tip of the tongue-lifting lens 3 is 50-60mm. The sum of the second distance between the handle 1 and the tip of the lens 31 and the first distance has a second preset distance for adapting to different groups of people from incisors to glottis. This second preset distance can also be divided into different groups of people, and the length of the second distance between the handle 1 and the tip of the lens 31 can be designed to meet the second preset distance of different groups of people.
[0030] The first distance between the intersection of the insertion movement axis 5 and the center axis of the viewing angle 41 and the lens tip 31 is controlled at about 50mm to 60mm, and the second distance between the handle 1 and the lens tip 31 is 70mm. According to human anatomy, the distance between the incisors and the glottis in an adult is 130mm to 150mm. Therefore, the distance between the intersection of the insertion movement axis 5 and the center axis of the viewing angle 41 and the handle 1 can be about 120mm to 130mm. The angle design of the product can successfully lock the observation point at the entrance of the glottis. When the insertion tube moves along the guide groove 2 to the focal point of the viewing angle, it can be guided to the glottis, ensuring the success rate of insertion.
[0031] In one embodiment, such as Figure 2As shown, the angle α between the viewing center axis 41 of the camera 4 and the intubation movement axis 5 is 7° to 10°. That is, the camera 4 rotates 7° to 10° toward the guide groove 2 in the direction indicated by the arrow so as to ensure that the intersection of the viewing center axis 41 of the camera 4 and the intubation movement axis 5 is located at the glottis. In this embodiment, the angle α between the viewing center axis 41 of the camera 4 and the intubation movement axis 5 can be adaptively adjusted based on the applicable population. For example, for different populations such as children, adults, and short jaws, the angle α can be an adaptive angle of 7°, 8°, 9°, or 10°.
[0032] In one embodiment, the guide section is connected to one end of the handle 1. The guide 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 from 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 guide section away from the handle 1, facing the handle 1. The other end of the tongue levator 3 extends along the curvature of the guide section. The handle and the tongue levator 3 are connected by a guide section with a large-angle elliptical arc. A separate cavity is provided in the guide section as the guide groove 2 for the endotracheal tube, allowing the endotracheal tube to directly enter the airway along the guide groove 2, improving the operability of the guided laryngoscope.
[0033] 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 will sink due to gravity after leaving the guide groove 2. This may require additional adjustments to 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, the outlet end 22 is tilted towards the tip 31 of the laryngoscope. The upward tilt of the outlet end 22 of the guide groove 2 corrects the angle at which the tube sinks due to gravity after leaving the guide groove 2, allowing the tube to directly enter the glottis for airway management. This is especially beneficial for inexperienced medical personnel who, after aligning the guide groove 2 with the glottis, can directly insert the tube into the glottis without further adjustments to the laryngoscope or intubation angles, thus reducing adjustment operations.
[0034] In one embodiment, such as Figure 3 As shown, the angle β between the extension line of the tube outlet 22 and the extension line of the lens tip 31 is 1° to 4°. That is, the guide groove 2 and the tongue-lifting lens 3 only need to be non-parallel. Setting a small angle can correct the angle at which the tube sinks due to gravity after leaving the guide groove 2, and satisfy the angle at which the tube directly enters the glottis for observation through the guide groove 2.
[0035] In existing laryngoscopes, the shape is often L-shaped, with the angle between the levator blade 3 and the handle 1 typically ranging from 85° to 90°. The handle 1 is usually vertically positioned. For experienced doctors, a pulling motion is needed after the laryngoscope enters the oral cavity to achieve better glottal exposure. For less experienced doctors, more adjustments are required. Therefore, to achieve direct observation of the glottis with the laryngoscope and to quickly locate the glottis without unnecessary pulling motions after the laryngoscope enters the oral cavity, in optional embodiments, such as... Figure 3 As shown, the angle γ between the extension line of the laryngoscope tip 31 and the central axis of the handle 1 is 75° to 77°. After the laryngoscope enters the oral cavity, the tube led out from the outlet end 22 of the guide groove 2 can often be directly aligned with the glottis without any additional movements.
[0036] In one embodiment, the handle 1 is tilted toward the tongue levator 3, that is, the handle 1 and the tongue levator 3 are close to each other and connected by a large-angle elliptical arc. The handle 1 is designed to tilt forward, so that when encountering patients with difficulty in exposing the glottis, the handle 1 can be tilted backward to increase the observation angle, satisfy the operability of the guided laryngoscope, and make the observation of the glottis reach the maximum exposure rate.
[0037] In one embodiment, such as Figure 4 The illustrated guided laryngoscope also includes a cannula positioning part 23, which is disposed at the inlet end 21 of the guide groove 2. Specifically, the cannula positioning part 23 is located at the opening of the guide groove 2 near the handle 1, and it protrudes in the direction away from the handle 1. This ensures that the guide groove 2 has sufficient space to allow the cannula to move smoothly while preventing it from detaching from the guide groove 2.
[0038] In one embodiment, such as Figure 4 The guided laryngoscope also includes a tube guide 24, which extends from the outlet end 22 of the guide groove 2 along the extension line 221 of the guide groove 2. The extension of the tube guide 24 from the outlet end 22 of the guide groove 2 along the guide groove 2 enables overall positioning of the tube. This ensures that when the tube reaches the tube guide 24 along the guide groove 2, it is not affected by the curvature of the tube itself, and the tube guide 24 can guide the tube into the glottis along the observed trajectory.
[0039] The intersection of the optical axis of the light source and the axis of motion of the intubation tube coincides with the intersection of the center axis of the camera's field of view and the axis of motion of the intubation tube. This ensures that the light source can provide maximum illumination to the intubation tube location.
[0040] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.
Claims
1. A visually guided laryngoscope, characterized in that, include: handle, The guide section, integrally connected to the handle, is curved in an arc and has a guide groove for inserting the tube, the guide groove having an inlet end and an outlet end; A tongue-lifting lens is provided at the end of the guide portion away from the handle and extending toward the side of the handle; A camera is installed on one side of the outlet end of the guide groove, and the central axis of the camera's field of view is tilted toward the direction of the insertion tube's movement axis after the insertion tube extends along the outlet end of the guide groove. The light source is located on one side of the camera.
2. The visually guided laryngoscope as described in claim 1, characterized in that, The first distance between the intersection of the center axis of the viewing angle and the axis of the cannulation movement and the tip of the tongue-lifting lens is a first preset distance for adapting to different groups of people.
3. The visually guided laryngoscope as described in claim 1, characterized in that, The first distance between the intersection of the center axis of the viewing angle and the axis of the insertion movement and the tip of the lifting lens is 50-60mm.
4. The visually guided laryngoscope as described in claim 2, characterized in that, The second distance between the handle and the lens tip, sum to the first distance, has a second preset distance for adapting to different groups of people from incisors to glottis.
5. The visually guided laryngoscope as described in claim 2, characterized in that, The outlet end is tilted toward the mirror tip.
6. The visually guided laryngoscope as described in claim 5, characterized in that, The angle between the extension line of the tube outlet and the extension line of the lens tip is 1° to 4°.
7. The visually guided laryngoscope as described in claim 5, characterized in that, The angle between the extension line of the lens tip and the central axis of the handle is 75° to 77°.
8. The visually guided laryngoscope as described in claim 1, characterized in that, The insertion positioning part is provided at the inlet end of the guide groove, and the insertion positioning part protrudes in the direction away from the handle.
9. The visually guided laryngoscope as described in claim 1, characterized in that, Also includes: The insertion positioning part extends along the extension line of the tube outlet end at the tube outlet end of the guide groove.
10. The visually guided laryngoscope as described in claim 1, characterized in that, The intersection of the optical axis of the light source and the axis of motion of the intubation tube coincides with the intersection of the center axis of the camera's field of view and the axis of motion of the intubation tube.