Laryngoscope

Abstract

The utility model relates to the technical field of medical instruments, in particular to a laryngoscope which comprises a handle, a tongue pressing piece connected to one end of the handle and a display device connected to the other end of the handle, the tongue pressing piece is provided with a first installation cavity, and a camera, a first laser emitting head and a second laser emitting head are arranged in the first installation cavity. The first laser emission head and the second laser emission head are respectively used for emitting a first laser beam and a second laser beam which are arranged in parallel at an interval to the glottis of a human body, and the shooting direction of the camera is parallel to the first laser beam and the second laser beam; the first laser beam and the second laser beam irradiate the glottis of a patient to form two light spots with the fixed distance, the first laser beam, the second laser beam and the two light spots and the light beam can be displayed in a display picture of the display device, and the two light spots, the first laser beam and the second laser beam can provide references for doctors. A doctor can conveniently judge the glottis size of a patient, and then the doctor can conveniently determine the specification of the tracheal catheter.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a laryngoscope. Background Technology

[0002] After general anesthesia, all the muscles in the patient's body are in a relaxed state, including the diaphragm and intercostal muscles that control breathing. This can cause the patient to lose the ability to breathe spontaneously. It is necessary to perform endotracheal intubation before performing general anesthesia. Endotracheal intubation can also effectively isolate the esophagus and airway to prevent stomach contents or other foreign objects from entering the airway and causing suffocation or aspiration pneumonia.

[0003] When performing endotracheal intubation, a laryngoscope is needed to observe the patient's glottis. Existing laryngoscopes include a handle, a tongue depressor connected to one end of the handle, and a display device connected to the other end of the handle. The tongue depressor has a cavity containing a camera, with the camera's imaging end located in the middle of the end of the tongue depressor opposite the handle. During intubation, the patient needs to be supine, and the doctor stands at the head of the bed near the patient's head. The doctor holds the laryngoscope in one hand and separates the patient's upper and lower jaws with the other. The tongue depressor is inserted into the patient's mouth, and the epiglottis is lifted using the tongue depressor. At this time, the camera's imaging end is directly facing the patient's glottis. After observing the patient's glottis through the display device, the endotracheal tube with a guidewire is passed through the glottis and inserted into the trachea, and then the guidewire is removed.

[0004] Because the size of the glottic opening varies from patient to patient, doctors need to select the appropriate size endotracheal tube. Current laryngoscopes can only show the position and shape of the glottis, not its size. Therefore, the choice of endotracheal tube must be based on the patient's age. Adults generally have a better selection; for women, a 7.0mm or 7.5mm inner diameter tube is usually sufficient, while for men, a 7.5mm or 8.0mm inner diameter tube is generally suitable. However, for patients with glottic stenosis and children, the range of glottic size variation is greater, requiring the use of multiple sizes of endotracheal tubes for trial intubation. This leads to wasted tubes and can cause patient discomfort. Utility Model Content

[0005] The technical problem to be solved by this utility model is that, currently, doctors find it difficult to determine the appropriate size of endotracheal tube for children and patients with glottic stenosis when performing intubation.

[0006] To address the aforementioned technical problems, the purpose of this utility model is to provide a laryngoscope, comprising: a handle, a tongue depressor connected to one end of the handle, and a display device connected to the other end of the handle. The tongue depressor has a first mounting cavity, in which a camera, a first laser emitter, and a second laser emitter are disposed. The camera is electrically connected to the display device. The first laser emitter and the second laser emitter are respectively used to emit a first laser beam and a second laser beam arranged in parallel and spaced apart towards the glottis of the human body. The first laser beam and the second laser beam are arranged in parallel and spaced apart, and the shooting direction of the camera is parallel to the first laser beam and the second laser beam.

[0007] As a preferred embodiment, the end of the first mounting cavity furthest from the handle is defined as the front end, and the end closest to the handle is defined as the rear end. Both the first laser emitter and the second laser emitter are arranged behind the camera, and the camera is located in the interval between the first laser beam and the second laser beam.

[0008] As a preferred embodiment, both the first laser emitting head and the second laser emitting head are fiber collimators, and the laryngoscope further includes a laser generator, a fiber coupler, a first optical fiber connected to the first laser emitting head, and a second optical fiber connected to the second laser emitting head;

[0009] The end of the first optical fiber facing away from the first laser emitter and the end of the second optical fiber facing away from the second laser emitter are both connected to the output end of the optical fiber coupler, and the input end of the optical fiber coupler is connected to the laser generator.

[0010] As a preferred embodiment, the handle has a second mounting cavity communicating with the first mounting cavity, and the fiber optic coupler is connected to the outside of the handle. The end of the first optical fiber facing away from the first laser emitting head and the end of the second optical fiber facing away from the second laser emitting head pass through the first mounting cavity and the second mounting cavity in sequence and are connected to the fiber optic coupler.

[0011] As a preferred embodiment, the laser generator is a green laser generator.

[0012] As a preferred embodiment, the distance between the first laser emitter and the second laser emitter is 8mm.

[0013] As a preferred embodiment, the laryngoscope further includes a disposable transparent sleeve, which is fitted over the outside of the tongue depressor.

[0014] As a preferred embodiment, the disposable transparent sleeve is made of rigid plastic. The disposable transparent sleeve includes a sleeve body and a tongue depressor. The sleeve body has an open end and a closed end. The tongue depressor is connected to the closed end, and the open end is sleeved on the outside of the tongue depressor.

[0015] As a preferred embodiment, the disposable transparent sleeve further includes a hanging ear portion connected to the open end, and the end of the tongue depressor near the handle is provided with a hook portion, and the hanging ear portion is hung on the hook portion.

[0016] As a preferred embodiment, there are two hanging ears, which are respectively located on opposite sides of the opening end. There are also two hooks, which are respectively located on opposite sides of the end of the tongue depressor near the handle. Each hanging ear is hooked onto the corresponding hook.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] The laryngoscope of this invention includes a handle, a tongue depressor connected to one end of the handle, and a display device connected to the other end of the handle. The tongue depressor has a first mounting cavity, in which a camera, a first laser emitter, and a second laser emitter are disposed. The first laser emitter and the second laser emitter are respectively used to emit a first laser beam and a second laser beam arranged in parallel and spaced apart towards the glottis of the human body. The shooting direction of the camera is parallel to the first laser beam and the second laser beam. When the laryngoscope of this invention is used to expose the patient's glottis and insert a tube, the first laser beam and the second laser beam will form light spots when they irradiate the patient's glottis. The two light spots, the first laser beam, and the second laser beam will be displayed on the display screen of the display device. The distance between the two light spots and the distance between the first laser beam and the second laser beam are fixed. The two light spots, the first laser beam, and the second laser beam can provide doctors with reference benchmarks, making it easier for doctors to judge the size of the patient's glottis, and thus making it easier for doctors to determine the specifications of the endotracheal tube. Attached Figure Description

[0019] Figure 1 This is an axonometric view of the laryngoscope of this utility model;

[0020] Figure 2 This is a side view of the laryngoscope of this utility model;

[0021] Figure 3 This is a simplified diagram of the internal structure of the laryngoscope of this utility model;

[0022] Figure 4 This is an axonometric view of the laryngoscope of this utility model after a disposable transparent sleeve has been fitted.

[0023] Figure 5This is a side view of the laryngoscope of this utility model after a disposable transparent cover has been fitted.

[0024] In the figure, 1 is the handle, 12 is the second mounting cavity, 2 is the tongue depressor, 21 is the first mounting cavity, 22 is the hook, 23 is the transparent encapsulation cover, 3 is the display device, 4 is the camera, 51 is the first laser emitter, 52 is the second laser emitter, 6 is the laser generator, 7 is the fiber optic coupler, 81 is the first optical fiber, 82 is the second optical fiber, 9 is the disposable transparent sleeve, 91 is the sleeve body, 92 is the tongue depressor, and 93 is the ear loop. Detailed Implementation

[0025] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0026] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," "right," "top," and "bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. It should be understood that the terms "first," "second," etc., are used in this utility model to describe various information, but this information should not be limited to these terms; these terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this utility model, "first" information can also be called "second" information, and similarly, "second" information can also be called "first" information.

[0027] like Figures 1 to 5As shown, a preferred embodiment of the laryngoscope of this utility model includes a handle 1, a tongue depressor 2 connected to one end of the handle 1, and a display device 3 connected to the other end of the handle 1. The tongue depressor 2 has a first mounting cavity 21, in which a camera 4, a first laser emitter 51, and a second laser emitter 52 are provided. The first laser emitter 51 and the second laser emitter 52 are respectively used to emit a first laser beam and a second laser beam arranged in parallel and spaced apart towards the glottis of the human body. The first laser beam and the second laser beam are arranged in parallel and spaced apart. The shooting direction of the camera 4 is parallel to the first laser beam and the second laser beam. Therefore, no matter how far the camera 4 is from the glottis of the human body, the distance between the light spots formed by the first laser beam and the second laser beam irradiating the glottis remains unchanged. When the doctor uses the laryngoscope of this utility model to expose the patient's glottis and insert a tube, the first laser beam, the second laser beam, and the two light spots will be displayed on the display screen of the display device 3. The first laser beam, the second laser beam, and the two light spots can provide the doctor with a reference benchmark, making it easier for the doctor to judge the size of the patient's glottis, and thus making it easier for the doctor to determine the specifications of the endotracheal tube. For example, if the distance between the first laser emitter 51 and the second laser emitter 52 is the diameter of a commonly used endotracheal tube, and the distance between the first laser beam and the second laser beam, as well as the distance between the two light spots, are all the diameter of a commonly used endotracheal tube, the doctor can more accurately determine the patient's glottis size by comparing the patient's glottis size with the distance between the two light spots or the first laser beam and the second laser beam, thus making it easier for the doctor to determine the specifications of the endotracheal tube.

[0028] In this embodiment, the end of the first mounting cavity 21 furthest from the handle 1 is defined as the front end, and the end closest to the handle 1 is defined as the rear end. The first laser emitter 51 and the second laser emitter 52 are both arranged behind the camera 4, and the camera 4 is located in the gap between the first laser beam and the second laser beam. Specifically, the camera 4, the first laser emitter 51, and the second laser emitter 52 are arranged in a triangular structure, with the camera 4 located at the top of the triangular structure. The tongue depressor 2 is located at the rear end near the handle 1, and the end of the tongue depressor 2 away from the handle 1 is defined as the front end. The first mounting cavity 21 extends through the front and rear ends of the tongue depressor 2. The front end of the tongue depressor 2 is provided with a transparent encapsulation cover 23 for sealing the mounting cavity. The camera 4 is arranged near the transparent encapsulation cover 23. The distance between the first laser emitter 51 and the second laser emitter 52 and the transparent encapsulation cover 23 is greater than the distance between the camera 4 and the transparent encapsulation cover 23. The triangular arrangement of the camera 4, the first laser emitter 51, and the second laser emitter 52 allows the first laser beam and the second laser beam to be relatively close to the camera 4, and also makes the structure of the tongue depressor 2 more compact. The first mounting cavity 11 has a transparent fixing plate bonded to its front. The transparent fixing plate has mounting holes in which the camera 4 is fixed. The first laser emitting head 51 and the second laser emitting head 52 are both arranged behind the transparent fixing plate and are fixed to the cavity wall of the mounting cavity by bonding. The wires used to connect the camera 4 are passed through the adhesive layer used to bond the first laser emitting head 51 and the second laser emitting head 52.

[0029] In this embodiment, the distance between the first laser emitter 51 and the second laser emitter 52 is 8mm, and the distance between the first laser beam and the second laser beam is also 8mm. The outer diameter of the endotracheal tube with an inner diameter of 5.5mm is generally 8.0mm. The doctor can determine the required specifications of the endotracheal tube by comparing the patient's glottis size with the interval between the first laser beam and the second laser beam.

[0030] In this embodiment, both the first laser emitter 51 and the second laser emitter 52 are fiber optic collimators. The laryngoscope also includes a laser generator 6, a fiber optic coupler 7, a first optical fiber 81 connected to the first laser emitter 51, and a second optical fiber 82 connected to the second laser emitter 52. The ends of the first optical fiber 81 and the second optical fiber 82 facing away from the first laser emitter 51 are both connected to the output end of the fiber optic coupler 7, and the input end of the fiber optic coupler 7 is connected to the laser generator 6. The laser generated by the laser generator 6 is split into two beams by the fiber optic coupler 7, which are transmitted in the first optical fiber 81 and the second optical fiber 82 respectively. The fiber optic collimator can convert the transmitted light within the optical fiber into collimated light for emission. In other embodiments of this invention, the fiber optic coupler 7 may be omitted, and two laser generators 6 may be used to send light to the first laser emitter 51 and the second laser emitter 52 respectively.

[0031] Furthermore, in order to make the laryngoscope structure compact and easy to assemble, in this embodiment, the handle 1 has a second mounting cavity 12 that communicates with the first mounting cavity 21, and the fiber optic coupler 7 is connected to the outside of the handle 1. The end of the first optical fiber 81 facing away from the first laser emitting head 51 and the end of the second optical fiber 82 facing away from the second laser emitting head 52 pass through the first mounting cavity 21 and the second mounting cavity 12 in sequence and are connected to the fiber optic coupler 7.

[0032] Since the posterior surface of the human body is red, for ease of identification, in this embodiment, laser generator 6 is a green laser generator.

[0033] In this embodiment, the laryngoscope also includes a disposable transparent sleeve 9, which is fitted over the outside of the tongue depressor 2. Before inserting the laryngoscope into the patient's mouth, the disposable transparent sleeve 9 is placed over the outside of the tongue depressor 2. After intubation, the laryngoscope is removed from the patient's mouth, and then the disposable transparent sleeve 9 is removed. This avoids direct contact between the tongue depressor 2 and the patient, thus allowing the laryngoscope to be reused without the need for disinfection after each use, thereby improving the efficiency of laryngoscope use.

[0034] Specifically, the disposable transparent sleeve 9 is made of rigid plastic. The disposable transparent sleeve 9 includes a sleeve body 91 and a tongue depressor 92. The sleeve body 91 has an open end and a closed end. The tongue depressor 92 is connected to the closed end, and the open end is fitted onto the outside of the tongue depressor 2. The tongue depressor 2 presses against the tip of the patient's tongue and can be made slightly thicker to ensure sufficient space in the mounting cavity. The pressing part is made relatively thin to facilitate pressing against the base of the patient's tongue.

[0035] Furthermore, to prevent the disposable transparent sleeve 9 from coming off the outside of the tongue depressor 2 during use, in this embodiment, the disposable transparent sleeve 9 also includes a hanging ear 93 connected to the open end. The end of the tongue depressor 2 near the handle 1 is provided with a hook 22, and the hanging ear 93 is hung on the hook 22.

[0036] Furthermore, two hanging ears 93 are respectively arranged on opposite sides of the open end, and two hooks 22 are provided. The two hooks 22 are respectively arranged on opposite sides of the end of the tongue depressor 2 near the handle 1, and each hanging ear 93 is respectively hung on the corresponding hook 22.

[0037] In summary, the laryngoscope of this invention includes a handle 1, a tongue depressor 2 connected to one end of the handle 1, and a display device 3 connected to the other end of the handle 1. The tongue depressor 2 has a first mounting cavity 21, in which a camera 4, a first laser emitter 51, and a second laser emitter 52 are provided. The first laser emitter 51 and the second laser emitter 52 emit parallel and spaced first and second laser beams into the field of view of the camera 4. When the doctor uses the laryngoscope of this invention to expose the patient's glottis and insert a tube, the first and second laser beams will form two light spots when they irradiate the patient's glottis. The two light spots, the first laser beam, and the second laser beam will be displayed on the display screen of the display device 3. The distance between the two light spots and the distance between the first and second laser beams are fixed. The two light spots, the first laser beam, and the second laser beam can provide the doctor with a reference benchmark, which makes it easier for the doctor to judge the size of the patient's glottis and thus to determine the specifications of the endotracheal tube.

[0038] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A laryngoscope characterised in that, include: The device comprises a handle (1), a tongue depressor (2) connected to one end of the handle (1), and a display device (3) connected to the other end of the handle (1). The tongue depressor (2) has a first mounting cavity (21), in which a camera (4), a first laser emitter (51), and a second laser emitter (52) are provided. The camera (4) is electrically connected to the display device (3). The first laser emitter (51) and the second laser emitter (52) are respectively used to emit a first laser beam and a second laser beam arranged in parallel and spaced apart towards the glottis of the human body. The first laser beam and the second laser beam are arranged in parallel and spaced apart. The shooting direction of the camera (4) is parallel to the first laser beam and the second laser beam.

2. The laryngoscope of claim 1, wherein, The end of the first mounting cavity (21) away from the handle (1) is defined as the front end, and the end closer to the handle (1) is defined as the rear end. The first laser emitter (51) and the second laser emitter (52) are both arranged behind the camera (4), and the camera (4) is located in the interval between the first laser beam and the second laser beam.

3. The laryngoscope of claim 1, wherein, Both the first laser emitter (51) and the second laser emitter (52) are fiber collimators. The laryngoscope also includes a laser generator (6), a fiber coupler (7), a first fiber (81) connected to the first laser emitter (51), and a second fiber (82) connected to the second laser emitter (52). The end of the first optical fiber (81) facing away from the first laser emitting head (51) and the end of the second optical fiber (82) facing away from the second laser emitting head (52) are both connected to the output end of the optical fiber coupler (7), and the input end of the optical fiber coupler (7) is connected to the laser generator (6).

4. The laryngoscope of claim 3, wherein, The handle (1) has a second mounting cavity (12) communicating with the first mounting cavity (21). The fiber optic coupler (7) is connected to the outside of the handle (1). The end of the first fiber (81) facing away from the first laser emitter (51) and the end of the second fiber (82) facing away from the second laser emitter (52) pass through the first mounting cavity (21) and the second mounting cavity (12) in sequence and are connected to the fiber optic coupler (7).

5. The laryngoscope of claim 3, wherein, The laser generator (6) is a green laser generator.

6. The laryngoscope of claim 1, wherein, The distance between the first laser emitter (51) and the second laser emitter (52) is 8 mm.

7. The laryngoscope of claim 1, wherein, The laryngoscope also includes a disposable transparent sleeve (9), which is fitted over the outside of the tongue depressor (2).

8. The laryngoscope of claim 7, wherein, The disposable transparent sleeve (9) is made of rigid plastic. The disposable transparent sleeve (9) includes a sleeve body (91) and a tongue depressor (92). The sleeve body (91) has an open end and a closed end. The tongue depressor (92) is connected to the closed end. The open end is sleeved on the outside of the tongue depressor (2).

9. The laryngoscope of claim 8, wherein, The disposable transparent sleeve (9) also includes a hanging ear (93) connected to the open end. The tongue depressor (2) has a hook (22) at one end near the handle (1), and the hanging ear (93) is hung on the hook (22).

10. The laryngoscope of claim 9, wherein, Two ear loops (93) are provided, and the two ear loops (93) are respectively located on opposite sides of the opening end. Two hooks (22) are provided, and the two hooks (22) are respectively located on opposite sides of the end of the tongue depressor (2) near the handle (1). Each ear loop (93) is hung on the corresponding hook (22).

Images