Laryngoscope blade
Through the use of the side guide plate and the inner guide plate, combined with the removable outer guide plate and refractive component, the accuracy of the laryngeal lens during tracheal catheter is solved, which improves the insertion success rate and reduces the risk of damage to the patient, and enhances the flexibility of operation.
Patent Information
- Application Number
- CN202510694171.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-28
- Publication Date
- 2025-07-11
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When existing laryngeal lenses are inserted in the tracheal catheter, it is difficult for inexperienced medical staff to accurately insert the glottis, which requires multiple adjustments, resulting in low first aid efficiency and may cause secondary damage to the patient.
The side guide plate is used in conjunction with the inner guide plate, and the end of the tracheal catheter is changed through the side guide plate to make it consistent with the area observed by the laryngeal lens. Combined with the removable outer guide plate and refractive assembly, ensure that the tracheal catheter is inserted into the glottis at one time.
It improves the success rate of tracheal catheter insertion, avoids secondary damage to the patient, reduces the cost of use and enhances operational flexibility.
Smart Images
Figure CN120284186A_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of medical consumables, and specifically relates to a laryngoscope blade. Background Art
[0002] During first aid or general anesthesia, in order to prevent hypoxia, facilitate the removal of airway secretions, and reduce the risk of aspiration, it is necessary to insert an endotracheal tube through the patient's larynx. After intubation, a ventilator is connected through the endotracheal tube to provide continuous oxygen supply and mechanical ventilation. When inserting the endotracheal tube, a laryngoscope blade is required. After the laryngoscope blade enters the oral cavity, it directly exposes the glottis area by physically pulling the tongue body and epiglottis, providing a direct visual field for the insertion of the tube into the trachea. The laryngoscope blade can also be used in conjunction with a video laryngoscope to directly observe the position of the glottis through the screen of the video laryngoscope, ensuring that the endotracheal tube accurately passes through the glottis and enters the trachea, avoiding misinsertion into the esophagus.
[0003] However, in addition to the channel for inserting the camera of the video laryngoscope, the existing laryngoscope blade only has an arc-shaped inner guiding plate provided at the inner arc end to guide the endotracheal tube. The end of the inner guiding plate is located on one side of the imaging or observation position, not in line with the observation position. This results in that after inexperienced medical staff observe the position of the glottis through the laryngoscope blade, the endotracheal tube cannot be accurately inserted into the glottis and needs to be adjusted multiple times. This not only affects first aid but also causes secondary damage to the patient's oral cavity. Summary of the Invention
[0004] The technical problem to be solved by this application is: to overcome the deficiencies of the prior art and provide a laryngoscope blade. In this application, the side guiding plate and the inner guiding plate are used in combination to deflect the end of the endotracheal tube through the side guiding plate so that it is in line with the observed area through the laryngoscope blade. Furthermore, after the laryngoscope blade is in place, the endotracheal tube can be inserted into the glottis at one time, improving the efficiency of first aid and avoiding secondary damage to the patient.
[0005] The technical solution adopted by this application to solve the problems existing in the prior art is:
[0006] A laryngoscope blade includes a tubular cavity. The insertion end of the tubular cavity is closed to form an observation window, and an inner guiding plate is provided at the inner arc end of the tubular cavity.
[0007] An insertion end bottom plate flush with the inner guiding plate is provided at the insertion end of the tubular cavity.
[0008] One end of the inner guiding plate facing away from the tubular cavity is connected with a side guiding plate. The side guiding plate extends to the front end of the tubular cavity. The side guiding plate, the inner guiding plate, and the outer wall of the tubular cavity surround a U-shaped channel.
[0009] The described side guide plate includes a first straight plate, an inclined plate, and a second straight plate connected in sequence. The first straight plate is located on one side of the tubular cavity, the second straight plate is located on one side of the insertion end bottom plate, and an insertion end side plate is fixed at one end of the insertion end bottom plate opposite to the second straight plate.
[0010] Preferably, a chute is provided on the end face of the tubular cavity facing the side guide plate, and an outer guide plate is slidably provided inside the chute. After the outer guide plate slides to the position corresponding to the first straight plate, the outer guide plate, the first straight plate, the corresponding inner guide plate, and the side wall of the tubular cavity form a tubular chamber.
[0011] Preferably, a refraction component is provided inside the tubular cavity, a light source is provided at the insertion end of the tubular cavity, and an electric control box is provided outside the tubular cavity. The light source is electrically connected to the electric control box.
[0012] Preferably, a handle is provided outside the observation end of the tubular cavity, and the electric control box is arranged on the handle.
[0013] Preferably, the light source is provided on one side of the observation window at the insertion end of the tubular cavity.
[0014] Preferably, the refraction component includes several refraction mirrors, and the refraction component transmits the picture at the insertion end bottom plate to the observation end of the tubular cavity by means of light refraction.
[0015] Preferably, the refraction mirror close to the insertion end is rotatably connected to the inner wall of the tubular cavity through a rotating shaft, and a control component is provided on the tubular cavity. The control component controls the rotating shaft to drive the refraction mirror to rotate.
[0016] Preferably, the control component includes a pull rope. A convex block is provided on one side of the refraction mirror provided with the rotating shaft close to the insertion end of the tubular cavity. One end of the pull rope is connected to the convex block and the other end passes through to the outside of the tubular cavity. One end of the refraction mirror provided with the rotating shaft away from the convex block is connected to the inner wall of the tubular cavity through an elastic member.
[0017] Preferably, a cleaning component is provided on the tubular cavity, and the cleaning component is used to clean the observation window.
[0018] A laryngoscope blade includes a tubular cavity. Both the insertion end and the observation end of the tubular cavity are arranged with openings, and a notch is provided in the middle of the inner arc surface or the outer arc surface of the tubular cavity.
[0019] Compared with the prior art, the beneficial effects of the present application are as follows:
[0020] (1) Through the guiding and limiting effects of the inner guide plate, the side guide plate, the insertion end bottom plate, and the insertion end side plate, the position of the end of the tracheal catheter is the same as the observed position, improving the success rate of the first insertion and avoiding secondary damage to the patient.
[0021] (2) Limit by a detachable outer guide plate to prevent the tracheal catheter from bouncing upward, further improving the success rate.
[0022] (3) The visual laryngoscope can be replaced by a refraction component, reducing the usage cost and eliminating the situation of being unable to use due to forgetting to bring the visual laryngoscope, thus improving the flexibility of use. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The present application will be further described below with reference to the drawings and embodiments.
[0024] Figure 1 This is the first structural diagram of a laryngeal lens of the present application.
[0025] Figure 2 It is Figure 1 the top view of
[0026] Figure 3 This is the second structural diagram of a laryngeal lens of the present application.
[0027] Figure 4 It is Figure 3 the exploded view of
[0028] Figure 5 This is the third structural diagram of a laryngeal lens of the present application.
[0029] Figure 6 It is Figure 5 the first cross-sectional view of
[0030] Figure 7 It is Figure 5 the second cross-sectional view of
[0031] Figure 8 It is Figure 5 the schematic diagram of the mirror refraction direction in
[0032] Figure 9 This is the fourth structural diagram of a laryngeal lens of the present application.
[0033] Figure 10 It is Figure 9 the cross-sectional view of
[0034] Figure 11 It is Figure 10 the partial enlarged view at A in
[0035] Figure 12 It is Figure 10 the partial enlarged view at B in
[0036] Figure 13 It is Figure 10 the partial enlarged view at C in
[0037] Figure 14 This is the fifth structural diagram of a laryngeal lens of the present application.
[0038] Figure 15 is Figure 14 The partial enlarged view at position D in
[0039] Figure 16 is Figure 14 the first sectional view of
[0040] Figure 17 is Figure 14 the second sectional view of
[0041] Figure 18 is Figure 17 the partial enlarged view at position E in
[0042] Figure 19 is Figure 17 the partial enlarged view at position F in
[0043] Figure 20 This is the sixth structural diagram of a laryngoscope blade of the present application.
[0044] Figure 21 is Figure 20 the first sectional view
[0045] Figure 22 is Figure 20 the second sectional view
[0046] Figure 23 is Figure 20 the third sectional view
[0047] Figure 24 is Figure 20 the structural diagram after installing the tracheal catheter.
[0048] In the figure: 1 - tube cavity, 101 - inner guide plate, 102 - side guide plate, 1021 - first straight plate, 1022 - inclined plate, 1023 - second straight plate, 103 - chute, 104 - observation window, 105 - airway, 106 - distribution air cavity, 107 - spray hole, 108 - notch, 109 - insertion end bottom plate, 1010 - insertion end side plate, 2 - outer guide plate, 3 - handle, 301 - sliding sleeve, 302 - external jack, 4 - electronic control box, 5 - light source, 6 - refracting mirror, 601 - rotating shaft, 602 - convex block, 7 - pull rope, 701 - rotating rod, 8 - pull rod, 801 - handle, 9 - rotating wheel, 10 - elastic member, 11 - guide block, 12 - external trachea, 13 - placement cavity, 14 - camera, 15 - tracheal catheter. Specific embodiments
[0049] The present application for a laryngoscope blade will be further described in detail with reference to the accompanying drawings, but it is not a limitation to the present application.
[0050] Example 1:
[0051] As shown by Figure 1 and Figure 2 A laryngoscope blade includes an arc-shaped tubular cavity 1. The insertion end of the tubular cavity 1 is closed to form an observation window 104, and the observation end of the tubular cavity 1 is arranged in an open manner to facilitate the insertion of the camera part of the video laryngoscope. An inner guide plate 101 is provided at the inner arc end of the tubular cavity 1. An insertion end bottom plate 109 is provided at the insertion end of the tubular cavity 1 and is flush-connected to the inner guide plate 101. The insertion end bottom plate 109 is located directly in front of the observation window 104.
[0052] One end of the inner guide plate 101 facing away from the tubular cavity 1 is connected to a side guide plate 102. The side guide plate 102 extends to the front end of the tubular cavity 1. The side guide plate 102, the inner guide plate 101 and the outer wall of the tubular cavity 1 surround a U-shaped channel.
[0053] The side guide plate 102 includes a first straight plate 1021, an inclined plate 1022 and a second straight plate 1023 connected in sequence. The inclined plate 1022 is transitioned with the first straight plate 1021 and the second straight plate 1023 through an arc-shaped plate. The first straight plate 1021 is located on one side of the tubular cavity 1, and the second straight plate 1023 is located on one side of the insertion end bottom plate 109. One end of the insertion end bottom plate 109 opposite to the second straight plate 1023 is fixed with an insertion end side plate 1010. The insertion end bottom plate 109, the second straight plate 1023 and the insertion end side plate 1010 surround a U-shaped channel.
[0054] During use, the camera part of the video laryngoscope is inserted through the open end of the observation end of the tubular cavity 1, and its end reaches the observation window 104. After the insertion end bottom plate 109 opens the glottis, the tracheal catheter 15 is inserted from the end of the side guide plate 102. Through the guidance of the side guide plate 102, the insertion end of the tracheal catheter 15 is moved to the U-shaped channel formed by the insertion end bottom plate 109, the second straight plate 1023 and the insertion end side plate 1010. At this time, the insertion end of the tracheal catheter 15 is consistent with the picture observed through the observation window 104 by the video laryngoscope, which ensures the accuracy of the intubation position and improves the success rate of insertion.
[0055] Embodiment 2:
[0056] In Embodiment 1, the upper end of the U-shaped channel formed by the first straight plate 1021, the inner guide plate 101 and the outer wall of the tubular cavity 1 is arranged in an open manner. Since the tracheal catheter 15 has a certain hardness, when the front end of the tracheal catheter 15 abuts against the inclined plate 1022, it may bounce up and cannot be accurately guided to the front of the observation window 104. To solve this problem, the present invention provides the following Embodiment 2.
[0057] As shown by Figure 3 and Figure 4As shown in the figure, the other structures and connection relationships in Embodiment 2 are the same as those in Embodiment 1. The difference lies in that a sliding groove 103 is provided on the end face of the tubular cavity 1 facing the side guide plate 102. An outer guide plate 2 is slidably arranged inside the sliding groove. After the outer guide plate 2 slides to the position corresponding to the first straight plate 1021, the outer guide plate 2, the first straight plate 1021, the corresponding inner guide plate 101 and the side wall of the tubular cavity 1 form a tubular chamber. The tracheal catheter 15 is limited by the tubular chamber to prevent it from bouncing back when contacting the inclined plate 1022.
[0058] The sliding groove 103 protrudes outward and is arranged on the side close to the inclined plate 1022, so that the outer guide plate 2 can slide towards the observation end side of the tubular cavity 1 and separate from the sliding groove 103. This can separate the laryngoscope from the tracheal catheter 15.
[0059] Embodiment 3:
[0060] The selling price of the video laryngoscope is more than ten thousand yuan and it needs to be carried separately. During out-of-hospital first aid, if the video laryngoscope is not carried, the relative position between the insertion end and the glottis cannot be directly observed through the laryngoscope blade. In order to omit the video laryngoscope and directly observe the relative position of the glottis only through the laryngoscope blade, the present invention provides the following Embodiment 3.
[0061] By Figures 5 to 8 As shown in the figure, the other structures and connection relationships in Embodiment 3 are the same as those in Embodiment 1 or Embodiment 2. The difference lies in that a refraction component is provided inside the tubular cavity 1, a light source 5 is provided at the insertion end of the tubular cavity 1, and an electric control box 4 is provided outside the tubular cavity 1. The light source 5 is electrically connected to the electric control box 4. The light source 5 adopts LED lamp beads. A battery and a switch are provided inside the electric control box 4. The switch, the battery and the light source 5 are connected in series, and the circuit is simple, reliable and low-cost.
[0062] For easy handheld operation, a handle 3 is provided outside the observation end of the tubular cavity 1, and the electric control box 4 is arranged on the handle 3.
[0063] The light source 5 is arranged on one side of the observation window 104 at the insertion end of the tubular cavity 1.
[0064] In this embodiment, the refraction component includes several refraction mirrors 6. The refraction component transmits the image at the bottom plate 109 of the insertion end to the observation end of the tubular cavity 1 by means of light refraction. Three refraction mirrors 6 are adopted in this embodiment, and the light refraction relationship in each refraction mirror 6 is shown by the dotted line in Figure 8 as shown.
[0065] In this way, hold the handle 3, insert the laryngoscope blade into the oral cavity, turn on the light source 5, and through the observation end of the tubular cavity 1, the image at the observation window 4 can be observed through the light refraction distance to determine whether the bottom plate 109 of the insertion end is inserted into the glottis. After determining the position, insert the tracheal catheter 15.
[0066] Example 4:
[0067] After inserting the laryngoscope blade, since the situation at the front end of the observation window 104 is observed through the principle of light refraction, the field of view is limited. In order to change the field of view, expand the observable field of view range, and thus facilitate inserting the insertion end bottom plate 109 into the glottis in sequence, the present invention provides the following Example 4.
[0068] As Figures 9 to 13 shown, the other structures and connection relationships of Example 4 are the same as those of Example 3, the difference being that the refractive mirror 6 near the insertion end is rotatably connected to the inner wall of the tubular cavity 1 through a rotating shaft 601, and a control component is provided on the tubular cavity 1, and the control component controls the rotating shaft 601 to drive the refractive mirror 6 to rotate.
[0069] The control component includes a pull rope 7. A convex block 602 is provided on one side of the refractive mirror 6 provided with the rotating shaft 601 near the insertion end of the tubular cavity 1. One end of the pull rope 7 is connected to the convex block 602, and the other end passes through to the outside of the tubular cavity 1. Further, a rotating rod 701 is rotatably connected to the convex block 602, and the end of the pull rope 7 is connected to the rotating rod 701.
[0070] One end of the refractive mirror 6 provided with the rotating shaft 601 away from the convex block 602 is connected to the inner wall of the tubular cavity 1 through an elastic member 10. The elastic member 10 is a elastic rope or a tension spring, and pulls this end of the refractive mirror 6 towards the inner wall of the tubular cavity 1. When the viewing angle needs to be adjusted, only need to pull the pull rope 7 outwards, and the pull rope 7 drives the refractive mirror 6 to rotate around the rotating shaft 601 against the pulling force of the elastic member 10.
[0071] For convenient control, a sliding sleeve 301 is provided at the end of the handle 3. A pull rod 8 made of a hard material is slidably connected inside the sliding sleeve 301. One end of the pull rod 8 is fixedly connected to the pull rope 7, and the other end is connected to a handle 801, and the pull rope 7 is controlled through the handle 801.
[0072] In order not to affect the observation line of sight, the pull rope 7 moves from the back of all the refractive mirrors 6. A plurality of rotating wheels 9 are rotatably provided inside the tubular cavity 1, and the rotating wheels 9 guide the pull rope 7. An arc-shaped guiding block 11 is provided at the outlet where the pull rope 7 passes out of the tubular cavity 1 for guiding.
[0073] Example 5:
[0074] During the insertion process of the laryngoscope blade, foreign matters such as mucus in the oral cavity may adhere to the surface of the observation window 104, affecting the observation line of sight. To solve this problem, the present invention provides the following Example 5.
[0075] As Figures 14 to 19As shown, the other structures and connection relationships of Embodiment 5 are the same as those of any one of Embodiments 1 to 4. The difference lies in that a cleaning component is provided on the tubular cavity 1, and the cleaning component is used to clean the observation window 104.
[0076] The cleaning component includes an air passage 105 and a distribution air chamber 106 that are connected in a mutually penetrating manner in the inner wall of the tubular cavity 1. The distribution air chamber 106 is connected to the outside through a spray hole 107. The spray hole 107 is arranged opposite to the observation window 104. An outlet is provided on the end surface of the air passage 105 at the observation end of the tubular cavity 1. An external air pipe 12 is inserted outside the outlet. The air inlet joint of the external air pipe 12 is the same as the air inlet joint of the tracheal catheter 15 for expanding the airbag.
[0077] The joint of the external air pipe 12 can also be connected to a negative pressure suction device. At this time, the spray hole 107 does not play a role in jet cleaning, but sucks out foreign matters such as the patient's oral mucus and blood through negative pressure suction to ensure the field of view.
[0078] Embodiment 6:
[0079] Consisting of Figures 20 to 24 As shown, a laryngoscope blade includes a tubular cavity 1. Both the insertion end and the observation end of the tubular cavity 1 are arranged to be open. A notch 108 is provided in the middle of the inner arc surface or the outer arc surface of the tubular cavity 1.
[0080] Both ends of the tubular cavity 1 are arranged to be open. A placement cavity 13 is provided at a position of the tubular cavity 1 close to the insertion end. A camera 14 and a light source 5 are arranged inside the placement cavity 13. A handle 3 and an electronic control box 4 are arranged outside the observation end of the tubular cavity 1. The electronic control box 4 is electrically connected to the camera 14 and the light source 5.
[0081] An external jack 302 connected to the electronic control box 4 is provided on the handle 3 for connecting an external display device to output the picture collected by the camera 14.
[0082] In this embodiment, when inserting the laryngoscope blade, observe the position through the camera 14. After it is in place, directly insert the tracheal catheter 15 through the tubular cavity 1. Since the tracheal catheter 15 has elasticity, the tracheal catheter 15 can be separated from the laryngoscope blade through the notch 108.
[0083] The embodiments of the present application have been described in detail above with reference to the drawings. However, the present application is not limited to the above embodiments. Various changes can be made without departing from the purpose of the present application within the knowledge scope of those of ordinary skill in the art.
Claims
1. A laryngoscope blade, comprising a tubular cavity (1), the insertion end of the tubular cavity (1) is closed to form an observation window (104), and an inner guide plate (101) is provided at the inner arc end of the tubular cavity (1), characterized in that: An insertion end bottom plate (109) flush with the inner guide plate (101) is provided at the insertion end of the tubular cavity (1); One end of the inner guide plate (101) facing away from the tubular cavity (1) is connected with a side guide plate (102), the side guide plate (102) extends to the front end of the tubular cavity (1), and the side guide plate (102), the inner guide plate (101) and the outer wall of the tubular cavity (1) surround a U-shaped channel; The side guide plate (102) includes a first straight plate (1021), an inclined plate (1022) and a second straight plate (1023) connected in sequence. The first straight plate (1021) is located on one side of the tubular cavity (1), the second straight plate (1023) is located on one side of the insertion end bottom plate (109), and an insertion end side plate (1010) is fixed at one end of the insertion end bottom plate (109) opposite to the second straight plate (1023).
2. A laryngoscope blade according to claim 1, characterized in that: A chute (103) is provided on the end face of the tubular cavity (1) facing the side guide plate (102), and an outer guide plate (2) is slidably arranged inside the chute. After the outer guide plate (2) slides to the position corresponding to the first straight plate (1021), the outer guide plate (2), the first straight plate (1021) and the inner guide plate (101) and the side wall of the tubular cavity (1) at the corresponding position form a tubular chamber.
3. A laryngoscope blade according to claim 1 or 2, characterized in that: A refraction assembly is provided inside the tubular cavity (1), a light source (5) is provided at the insertion end of the tubular cavity (1), and an electronic control box (4) is provided outside the tubular cavity (1). The light source (5) is electrically connected to the electronic control box (4).
4. A laryngoscope blade according to claim 3, characterized in that: A handle (3) is provided outside the observation end of the tubular cavity (1), and the electronic control box (4) is arranged on the handle (3).
5. A laryngoscope blade according to claim 3, characterized in that: The light source (5) is arranged on one side of the observation window (104) at the insertion end of the tubular cavity (1).
6. A laryngoscope blade according to claim 4 or 5, characterized in that: The refraction assembly includes a plurality of refraction mirrors (6), and the refraction assembly transmits the picture at the insertion end bottom plate (109) to the observation end of the tubular cavity (1) by means of light refraction.
7. A laryngoscope blade according to claim 6, characterized in that: The refraction mirror (6) near the insertion end is rotatably connected to the inner wall of the tubular cavity (1) through a rotating shaft (601), and a control assembly is provided on the tubular cavity (1), and the control assembly controls the rotating shaft (601) to drive the refraction mirror (6) to rotate.
8. A laryngoscope blade according to claim 7, characterized in that: The described control component includes a pull rope (7). A convex block (602) is provided on one side of a refractive mirror (6) provided with a rotating shaft (601) close to the insertion end of the tubular cavity (1). One end of the pull rope (7) is connected to the convex block (602), and the other end passes through to the outside of the tubular cavity (1). One end of the refractive mirror (6) provided with the rotating shaft (601) away from the convex block (602) is connected to the inner wall of the tubular cavity (1) through an elastic member (10).
9. A laryngoscope according to claim 1 or 2 or 4 or 7 or 8, characterized in that: A cleaning component is provided on the tubular cavity (1), and the cleaning component is used to clean the observation window (104).
10. A laryngoscope, comprising a tubular cavity (1), characterized in that: Both the insertion end and the observation end of the tubular cavity (1) are arranged in an open manner, and a notch (108) is provided in the middle of the inner arc surface or the outer arc surface of the tubular cavity (1).