Laryngoscope blade and laryngoscope

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a laryngoscope blade and a laryngoscope. The laryngoscope blade comprises an arc-shaped laryngoscope blade body and a tongue depressor, the tongue depressor is connected to the front end of the arc-shaped inner side surface of the laryngoscope blade body, the tongue depressor is provided with a tongue pressing part forwards protruding out of the laryngoscope blade body, the tongue pressing part is bent towards the arc-shaped inner side of the laryngoscope blade body, and the included angle between the tongue pressing part and a datum line ranges from 40 degrees to 48 degrees. The distance between the front end point of the tongue depressor and the lowest point of the arc-shaped outer side surface of the laryngoscope blade body in the reference line direction is 36-48mm; wherein the datum line is a connecting line between the lowest point of the arc-shaped outer side surface of the laryngoscope blade body and the circle center of the arc where the lowest point is located. The laryngoscope blade is large in radian, the tongue pressing part can directly reach the position of the anorexia cartilage along the tongue when the laryngoscope blade is inserted into the oral cavity of a patient, the anorexia cartilage is naturally supported, the tongue pressing plate does not need to be hooked upwards by applying too large acting force, the use difficulty is lowered, and a correct laryngeal image is easier to obtain.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, in particular to a laryngoscope blade and a laryngoscope. Background Art

[0002] Because the larynx is located deep and has a complex physiological structure, it cannot be directly viewed, so a laryngoscope is needed to examine the larynx.

[0003] An existing laryngoscope includes a display assembly, a handle and a laryngoscope blade, one end of the handle is detachably connected to the display assembly, and the other end of the handle is connected to the laryngoscope blade. The laryngoscope blade includes a laryngoscope blade body and a tongue depressor, the laryngoscope blade body is arc-shaped, and the tongue depressor is arranged at the front end of the laryngoscope blade body. When the handle is held to insert the laryngoscope blade into the patient's mouth, the tongue depressor directly lifts the tongue root and epiglottis cartilage to expose the larynx to the detection field of the laryngoscope blade, and the display assembly can display the laryngeal image detected by the laryngoscope blade in real time.

[0004] However, the curvature of the epiglottis cartilage is large, while the existing tongue depressor usually extends straight along the curved inner surface of the laryngoscope blade body. The curvature of the laryngoscope blade is small, and the curvature of the tongue depressor is small. After the laryngoscope blade enters the mouth, the tongue depressor must be hooked upward with force to press the epiglottis cartilage, which makes the operation more difficult. In addition, the force exerted by the laryngoscope blade on the patient's mouth is large, increasing the risk of oral injury to the patient. Utility Model Content

[0005] The technical problem to be solved by the utility model is that the curvature of the tongue depressor of the existing laryngoscope is small, and after the laryngoscope blade enters the oral cavity, the tongue depressor needs to be hooked upward with force to press the tongue to the epiglottis cartilage, which is difficult to operate. A laryngoscope blade and a laryngoscope are provided.

[0006] To solve the above technical problems, on the one hand, an embodiment of the utility model provides a laryngoscope blade, comprising a laryngoscope blade body and a tongue depressor, the laryngoscope blade body being arc-shaped, the tongue depressor being connected to the front end of the arc-shaped inner surface of the laryngoscope blade body, the tongue depressor having a tongue depressor portion protruding forward from the laryngoscope blade body, the tongue depressor portion being bent toward the arc-shaped inner side of the laryngoscope blade body, the angle between the tongue depressor portion and a reference line being 40° to 48°, the distance between the front end point of the tongue depressor and the lowest point of the arc-shaped outer surface of the laryngoscope blade body in the direction of the reference line being 36 to 48 mm; wherein the reference line is a line connecting the lowest point of the arc-shaped outer surface of the laryngoscope blade body and the center of the arc where the lowest point is located.

[0007] Optionally, the sum of the extension length of the arc-shaped inner side of the laryngoscope blade body and the extension length of the tongue depressing portion is 138-162 mm.

[0008] Optionally, the distance between the front end point of the tongue depressor and the rear end point of the arc-shaped outer surface of the laryngoscope blade body in a direction perpendicular to the reference line is 124-140 mm.

[0009] Optionally, the laryngoscope blade body comprises a plurality of arc segments connected in sequence, and all of the arc segments are bent toward the same side of the laryngoscope blade body.

[0010] Optionally, the laryngoscope blade body is a square tubular structure, comprising a first body and a second body, both of which extend along the arc-shaped extension direction of the laryngoscope blade body, and the tongue depressor is connected to the arc-shaped inner surface of the first body; the first body has a first opening facing the second body, and the second body has a second opening facing the first body, and the first opening side of the first body is in contact with and cooperates with the second opening side of the second body to enclose the inner cavity of the laryngoscope blade body.

[0011] Optionally, the first body and the second body are detachably connected.

[0012] Optionally, a plurality of elastic arms extending along the opening direction of the first opening are provided in the first body, a hook is provided at the end of the elastic arm close to the second body, a plurality of wedge blocks are provided in the second body, and the hooks are snap-fitted with the corresponding wedge blocks.

[0013] Optionally, it also includes a lens and a transparent window, which are installed in the inner cavity of the laryngoscope blade body. A detection port is provided on the front end surface of the laryngoscope blade body and passes through the arc-shaped extension direction of the laryngoscope blade body. The detection port passes through the arc-shaped inner wall of the laryngoscope blade body. The transparent window is provided between the lens and the detection port. The transparent window covers the detection port and abuts against the tongue depressor.

[0014] In the laryngoscope blade of the utility model, the tongue depressor connected to the front end of the laryngoscope blade body is bent at a larger angle toward the arc-shaped inner side of the laryngoscope blade body, so that the front end of the laryngoscope blade has a larger arc, which is more in line with human oral ergonomics. Therefore, when the laryngoscope blade is inserted into the patient's mouth, the tongue depressor can go straight to the epiglottic cartilage along the tongue and naturally support the epiglottic cartilage. It is not necessary to apply too much force to hook the tongue depressor up, which reduces the difficulty of use and makes it easier to obtain a correct laryngeal image. In addition, the force of the laryngoscope blade on the patient's mouth is reduced, reducing the risk of oral injury to the patient.

[0015] On the other hand, an embodiment of the utility model provides a laryngoscope, including a handle, a display assembly and the above-mentioned laryngoscope blade, wherein one end of the handle is connected to the display assembly, and the other end of the handle is connected to the rear end of the laryngoscope blade body.

[0016] Optionally, the laryngoscope blade body and the handle are integrally formed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a laryngoscope provided in one embodiment of the utility model;

[0018] Figure 2 yes Figure 1 A structural diagram from another perspective;

[0019] Figure 3 yes Figure 1 A front view of

[0020] Figure 4 yes Figure 1 Exploded diagram of

[0021] Figure 5 yes Figure 4 Schematic diagram from another perspective.

[0022] The reference numerals in the specification are as follows:

[0023] 1. Display assembly; 11. Display screen; 2. Handle; 21. Anti-slip groove; 3. Laryngoscope blade; 31. First body; 32. Second body; 33. First positioning column; 34. Elastic arm; 35. Second positioning column; 36. Wedge; 37. Detection port; 4. Tongue depressor; 41. Tongue depressor; 5. Lens; 6. Transparent window. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0025] like Figures 1 to 3 As shown, an embodiment of the utility model provides a laryngoscope, including a handle 2, a display assembly 1 and a laryngoscope blade 3, wherein one end of the handle 2 is connected to the display assembly 1, and the other end of the handle 2 is connected to the rear end of the laryngoscope blade body.

[0026] When using the laryngoscope, the operator holds the handle 2 and inserts the laryngoscope blade 3 into the patient's mouth. The front end of the laryngoscope blade 3 lifts the patient's tongue root and epiglottis cartilage to expose the larynx. The display component 1 can display the larynx image detected by the laryngoscope blade 3 in real time.

[0027] The laryngoscope blade 3 comprises a laryngoscope blade body and a tongue depressor 4. The laryngoscope blade body is arc-shaped. The tongue depressor 4 is connected to the front end of the arc-shaped inner surface of the laryngoscope blade body. The tongue depressor 4 has a tongue depressing portion 41 protruding forward from the laryngoscope blade body.

[0028] The "front end of the laryngoscope blade body" refers to the end of the laryngoscope blade body that is inserted into the patient's oral cavity.

[0029] The tongue depressor 41 is bent toward the inner arc side of the blade body, and the angle between the tongue depressor 41 and the reference line is 40° to 48°. The distance between the front end of the tongue depressor 4 and the lowest point of the arc-shaped outer surface of the blade body in the reference line direction is 36 to 48 mm.

[0030] The reference line is the line connecting the lowest point of the arc-shaped outer surface of the blade body and the center of the arc where the lowest point is located. The point on the arc-shaped outer surface of the blade body that is farthest from the front end of the tongue depressor 4 in the direction perpendicular to the reference line is the so-called lowest point.

[0031] The tongue depressor 41 is bent at a larger angle toward the inner side of the arc of the blade body, so that the front end of the blade 3 has a larger arc, which is more in line with human oral ergonomics. Therefore, when the blade 3 is inserted into the patient's mouth, the tongue depressor 41 can go straight to the epiglottic cartilage along the tongue and naturally support the epiglottic cartilage. There is no need to apply too much force on the handle 2 to hook the tongue depressor 4 up, which reduces the difficulty of use and makes it easier to obtain a correct laryngeal image. In addition, the force of the blade 3 on the patient's mouth is reduced, reducing the risk of oral injury to the patient.

[0032] In the laryngoscope of the utility model, the tongue depressor 41 connected to the front end of the laryngoscope blade body is bent at a larger angle toward the arc-shaped inner side of the laryngoscope blade body, so that the front end of the laryngoscope blade 3 has a larger arc, which is more in line with human oral ergonomics, so that the tongue depressor 41 can go straight to the epiglottic cartilage along the tongue when the laryngoscope blade 3 is inserted into the patient's mouth, and naturally support the epiglottic cartilage, without applying too much force on the handle 2 to hook the tongue depressor 4, reducing the difficulty of use and making it easier to obtain a correct laryngeal image. In addition, the force of the laryngoscope blade 3 acting on the patient's mouth is reduced, reducing the risk of oral injury to the patient.

[0033] In one embodiment, the sum of the extension length of the arc-shaped inner side of the laryngoscope blade body and the extension length of the tongue depressing portion 41 is 138-162 mm.

[0034] In one embodiment, the distance between the front end point of the tongue depressor 4 and the rear end point of the arc-shaped outer surface of the laryngoscope blade body in the direction perpendicular to the reference line is 124-140 mm.

[0035] In one embodiment, the laryngoscope blade body comprises a plurality of arc segments connected in sequence, and all the arc segments are bent toward the same side of the laryngoscope blade body.

[0036] It should be noted that the laryngoscope blade 3 includes at least three specifications, which are respectively suitable for infants, adults and adults with difficult airways, and the tongue depressing portion 41 of the laryngoscope blades 3 of different specifications has different bending degrees and lengths. The tongue depressing portion 41 of the laryngoscope blade 3 suitable for infants is shorter and has a larger angle with the reference line, and the tongue depressing portion 41 of the laryngoscope blade 3 suitable for adults and adults with difficult airways is longer than that of the laryngoscope blade 3 suitable for infants.

[0037] The structures of the three specifications of laryngoscope blades 3 suitable for infants, adults and adults with difficult airways are as follows:

[0038] The laryngoscope blade 3 is suitable for infants, and the angle α between the reference lines of the tongue depressor 41 is 48°, the distance A between the front end point of the tongue depressor 4 and the lowest point of the arc-shaped outer surface of the laryngoscope blade body in the reference line direction is 36 mm, the sum S of the extension length of the arc-shaped inner side of the laryngoscope blade body and the extension length of the tongue depressor 41 is 138 mm, and the distance B between the front end point of the tongue depressor 4 and the rear end point of the arc-shaped outer surface of the laryngoscope blade body in the direction perpendicular to the reference line is 124 mm.

[0039] The laryngoscope blade 3 is suitable for adults, the angle α between the reference lines of the tongue depressor 41 is 40°, the distance A between the front end point of the tongue depressor 4 and the lowest point of the arc-shaped outer surface of the laryngoscope blade body in the reference line direction is 44 mm, the sum S of the extension length of the arc-shaped inner side of the laryngoscope blade body and the extension length of the tongue depressor 41 is 155 mm, and the distance B between the front end point of the tongue depressor 4 and the rear end point of the arc-shaped outer surface of the laryngoscope blade body in the vertical reference line direction is 130 mm.

[0040] The laryngoscope blade 3 is suitable for adults with difficult airways, the angle α between the reference lines of the tongue depressor portion 41 is 40°, the distance A between the front end point of the tongue depressor 4 and the lowest point of the arc-shaped outer surface of the laryngoscope blade body in the reference line direction is 48 mm, the sum S of the extension length of the arc-shaped inner side of the laryngoscope blade body and the extension length of the tongue depressor portion 41 is 162 mm, and the distance B between the front end point of the tongue depressor 4 and the rear end point of the arc-shaped outer surface of the laryngoscope blade body in the direction perpendicular to the reference line is 139 mm.

[0041] In one embodiment, if Figure 4 and Figure 5 As shown, the laryngoscope blade body is a square tubular structure, and the laryngoscope blade body includes a first body 31 and a second body 32 . The first body 31 and the second body 32 both extend along the arc-shaped extension direction of the laryngoscope blade body, and the tongue depressor 4 is connected to the arc-shaped inner surface of the first body 31 .

[0042] The first body 31 has a first opening facing the second body 32 , and the second body 32 has a second opening facing the first body 31 . The first opening side of the first body 31 contacts and cooperates with the second opening side of the second body 32 to enclose an inner cavity of the laryngoscope blade body.

[0043] In one embodiment, the first body 31 includes a first side wall along an arc-shaped extension direction perpendicular to the laryngoscope blade body, a first arc-shaped inner wall and a second arc-shaped outer wall formed by bending both sides of the first side wall toward the second body 32 .

[0044] The second body 32 includes a second side wall extending in a direction perpendicular to the arc-shaped extension direction of the laryngoscope blade body, a second arc-shaped inner wall and a second arc-shaped outer wall formed by bending both sides of the second side wall toward the first body 31 .

[0045] The first side wall and the second side wall are arranged opposite to each other, the first arc-shaped inner wall is connected to the second arc-shaped inner wall, and the second arc-shaped inner wall is connected to the second arc-shaped outer wall, so as to be assembled into the laryngoscope blade body.

[0046] In one embodiment, the mating surfaces between the first opening side and the second opening side are both stepped, and the first body 31 and the second body 32 can limit each other when docking to avoid misalignment of the first body 31 and the second body 32 in a direction perpendicular to the docking.

[0047] In one embodiment, the first body 31 and the second body 32 are detachably connected, so that the laryngoscope blade body can be disassembled later and other components can be installed into the laryngoscope blade body through the first opening and the second opening without providing other installation ports.

[0048] In one embodiment, a plurality of elastic arms 34 extending along the opening direction of the first opening are provided in the first body 31, a hook is provided at the end of the elastic arm 34 close to the second body 32, and a plurality of wedge blocks 36 are provided in the second body 32. The hooks are snap-fitted with the corresponding wedge blocks 36 to make the first body 31 and the second body 32 detachably connected.

[0049] Specifically, multiple elastic arms 34 are disposed near the first arcuate inner wall and the first arcuate outer wall of the first body 31 , and the hook is disposed on the side of the elastic arms 34 facing the outside of the laryngoscope blade body.

[0050] In one embodiment, a plurality of first positioning columns 33 are disposed in the first body 31 , and a positioning hole extending along the opening direction of the first opening is disposed on the first positioning columns 33 . The plurality of first positioning columns 33 are disposed near the first arc-shaped inner wall and the first arc-shaped outer wall of the first body 31 .

[0051] A corresponding second positioning column 35 is provided in the second body 32 , and the second positioning column 35 extends along the opening direction of the second opening. The second positioning column 35 can be inserted into the positioning hole when the first body 31 and the second body 32 are assembled together for positioning, so as to facilitate alignment of the first body 31 and the second body 32 .

[0052] In one embodiment, it further comprises a lens 5 and a transparent window 6, which are installed in the inner cavity of the laryngoscope blade body. A detection port 37 is provided on the front end surface of the laryngoscope blade body, which runs through the arc-shaped extension direction of the laryngoscope blade body, and the detection port 37 runs through the arc-shaped inner wall of the laryngoscope blade body. The transparent window 6 is provided between the lens 5 and the detection port 37, and the transparent window 6 covers the detection port 37 and rests on the plate surface of the tongue depressor 4.

[0053] The lens 5 is electrically connected to the display assembly 1, and the lens 5 captures the image of the larynx through the transparent window 6, and displays the image of the larynx through the display screen 11 of the display assembly 1. Moreover, since the transparent window 6 is against the plate surface of the tongue depressor 4, the viewing angle area of ​​the lens 5 is tangent to the plate surface of the tongue depressor 4, and the lens 5 can capture the area of ​​the larynx below the tongue depressor 4, avoiding a shooting blind area.

[0054] In one embodiment, a fixed support is disposed in the first body 31 , the lens 5 is fixed on the fixed support and the transparent window 6 is pressed against the detection port 37 , and the side walls of the first body 31 and the second body 32 limit the transparent window 6 .

[0055] In one embodiment, the laryngoscope blade body and the handle 2 are integrally formed, and the integrally formed laryngoscope blade body and the handle 2 are an arc-shaped tubular structure, the rear end of the arc-shaped tubular structure constitutes the handle 2, and the front end of the arc-shaped tubular structure constitutes the laryngoscope blade body.

[0056] In one embodiment, the display assembly 1 is detachably connected to the handle 2. After the laryngoscope blade 3 and the handle 2 are used once, they are completely removed and replaced with new handles 2 and laryngoscope blades 3.

[0057] In one embodiment, the tongue depressor 4 is integrally formed with the laryngoscope body.

[0058] In one embodiment, a plurality of anti-slip grooves 21 are arranged on the arc-shaped inner wall of the handle 2, and the plurality of anti-slip grooves 21 are sequentially distributed along the arc-shaped extension direction of the handle 2. When the operator holds the handle 2, the fingers are inserted into the corresponding anti-slip grooves 21.

[0059] In other embodiments, the handle 2 may be fixedly connected to the laryngoscope blade 3 .

[0060] In other embodiments, the laryngoscope blade body may include a tube body and a sealing plate, the arc-shaped outer side of the tube body is an opening structure, and the sealing plate covers the opening of the tube body.

[0061] In other embodiments, a connection hole extending along the first opening direction may be provided on the first body 31, and a threaded hole extending along the second opening direction may be provided on the second body 32, and the first body 31 and the second body 32 may be connected by screws.

[0062] In addition, an embodiment of the present invention provides a laryngoscope blade, and the structure of the laryngoscope blade 3 is the same as the structure of the laryngoscope blade 3 in any of the above embodiments, which will not be repeated here.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A laryngoscope blade, characterized in that: The invention comprises a laryngoscope blade body and a tongue depressor (4), wherein the laryngoscope blade body is arc-shaped, the tongue depressor (4) is connected to the front end of the arc-shaped inner surface of the laryngoscope blade body, the tongue depressor (4) has a tongue depressor portion (41) protruding forward from the laryngoscope blade body, the tongue depressor portion (41) is bent toward the arc-shaped inner side of the laryngoscope blade body, the angle between the tongue depressor portion (41) and a reference line is 40° to 48°, and the distance between the front end point of the tongue depressor (4) and the lowest point of the arc-shaped outer surface of the laryngoscope blade body in the direction of the reference line is 36 to 48 mm; wherein the reference line is a line connecting the lowest point of the arc-shaped outer surface of the laryngoscope blade body and the center of the arc where the lowest point is located.

2. The laryngoscope blade according to claim 1, characterized in that: The sum of the extension length of the arc-shaped inner side of the laryngoscope blade body and the extension length of the tongue depressing portion (41) is 138-162 mm.

3. The laryngoscope blade according to claim 1, characterized in that: The distance between the front end point of the tongue depressor (4) and the rear end point of the arc-shaped outer surface of the laryngoscope blade body in a direction perpendicular to the reference line is 124-140 mm.

4. The laryngoscope blade according to claim 1, characterized in that: The laryngoscope blade body comprises a plurality of arc segments connected in sequence, and all the arc segments are bent toward the same side of the laryngoscope blade body.

5. The laryngoscope blade according to claim 1, characterized in that: The laryngoscope blade body is a square tubular structure, comprising a first body (31) and a second body (32), wherein the first body (31) and the second body (32) both extend along the arc-shaped extension direction of the laryngoscope blade body, and the tongue depressor (4) is connected to the arc-shaped inner surface of the first body (31); the first body (31) has a first opening facing the second body (32), and the second body (32) has a second opening facing the first body (31), and the first opening side of the first body (31) is in contact with and matched with the second opening side of the second body (32) to enclose an inner cavity of the laryngoscope blade body.

6. The laryngoscope blade according to claim 5, characterized in that: The first body (31) and the second body (32) are detachably connected.

7. The laryngoscope blade according to claim 6, characterized in that: A plurality of elastic arms (34) extending along the opening direction of the first opening are arranged in the first body (31), and a hook is arranged at an end of the elastic arm (34) close to the second body (32). A plurality of wedge blocks (36) are arranged in the second body (32), and the hook is snap-fitted with the corresponding wedge block (36).

8. The laryngoscope blade according to claim 1, characterized in that: It also comprises a lens (5) and a transparent window (6), wherein the lens (5) and the transparent window (6) are mounted in the inner cavity of the laryngoscope blade body; a detection port (37) penetrating along the arc-shaped extension direction of the laryngoscope blade body is arranged on the front end surface of the laryngoscope blade body; the detection port (37) penetrates the arc-shaped inner side wall of the laryngoscope blade body; the transparent window (6) is arranged between the lens (5) and the detection port (37); the transparent window (6) covers the detection port (37) and abuts against the tongue depressor (4).

9. A laryngoscope, characterized in that: It comprises a handle (2), a display assembly (1) and a laryngoscope blade (3) according to any one of claims 1 to 8, wherein one end of the handle (2) is connected to the display assembly (1), and the other end of the handle (2) is connected to the rear end of the laryngoscope blade body.

10. The laryngoscope according to claim 9, characterized in that The laryngoscope blade body and the handle (2) are integrally formed.

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