KR102492718B1 - Video laryngoscope with variable blade angle - Google Patents

Abstract

The present invention discloses a video laryngoscope having a variable blade angle.
The present invention includes a body portion provided with an image processing unit and a power supply unit inside a rod-shaped handle; a display unit installed on top of the body unit to display signals of the image processing unit in digitization; a blade unit installed to rotate at a lower end of the handle and provided with a blade having a length sufficient to secure an airway in the oral cavity of the patient; a photographing unit that photographs the laryngeal region of the patient through a lens installed in the blade and outputs the image to the image processing unit; a setting unit that allows the blade to be inserted into the oral cavity of the patient to be adjusted to a predetermined angle in the handle; a controller for locking and unlocking the blade angled at the handle; It is possible to insert into the mouth and laryngeal organs while selectively controlling the angle of the blade according to the patient's extension state with a configuration comprising a.

Description

Video laryngoscope with variable blade angle {VIDEO LARYNGOSCOPE WITH VARIABLE BLADE ANGLE}

The present invention relates to a video laryngoscope whose angle is variable so that a blade can be smoothly inserted into the oral cavity when intubation of a blade inserted into the oral cavity to secure the patient's airway is not easy depending on the patient's physical condition.

A laryngoscope is a tool in the shape of a trachea. When an unconscious person cannot open the airway on their own due to general anesthesia or an accident, the operator forcibly opens the airway through the patient's mouth and inserts a tube into the trachea so that oxygen from the artificial respiration device is released. It is an emergency aid to be supplied to the patient.

Such laryngoscopes are largely classified into Macintosh-type laryngoscopes and video laryngoscopes that provide an improved view to the operator by mounting a camera on the blade and a display on the handle.

Macintosh-type laryngoscope consists of a long member with a curved tip, and is inserted through the oral cavity of an unconscious patient to lift the root of the tongue to an appropriate part on the side of the tip.

With the help of a laryngoscope, an intubation tube is inserted into the patient's airway while the patient's airway is safely secured. In an emergency, air or oxygen is administered to assist breathing, and an inhalational anesthetic is additionally administered during general anesthesia.

However, since such a Macintosh-type laryngoscope relies on the operator's eyes to check airway structures, there is a problem in that the field of view is limited and anatomical indicators are often not checked, resulting in delay or failure of intubation.

The video laryngoscope, which has improved the inconvenience of the Macintosh-type laryngoscope, has an imaging unit equipped with a CCD (Charge Cupled Device) and a lens at the front end of the blade for securing an airway, and a display device for displaying images captured by the imaging unit. .

With this video laryngoscope, the operator can more easily observe the pharynx or larynx of the patient through the CCD (Charge Cupled Device), imaging unit, and display device, so that the operator secures the patient's airway and inserts an intubation tube. facilitate

Because of these advantages, the use of video laryngoscopes is gradually increasing in recent years.

The video laryngoscope according to the prior art has a structure in which the display device is fixed or can be slightly rotated. (See Figure 1)

Therefore, under normal circumstances, when the operator performs the procedure from the back of the patient, there is no particular difficulty in observing the pharynx or larynx of the patient through the display device.

However, the procedure cannot be performed from behind the patient because there is an obstacle behind the patient, such as a patient who has been in a car accident or a patient in an accident building.

In addition, when the procedure is unavoidably performed in front of the patient, the display device is not rotated as much as desired, so that the pharynx or larynx of the patient cannot be observed through the corresponding display device.

By the way, a video laryngoscope has been proposed as Korean Registered Patent No. 10-1600339 “Video Laryngoscope” (hereinafter referred to as a selection name), which is as follows.

The first invention is a body portion provided with an image processing unit and a power supply unit; an imaging channel extending in the longitudinal direction of the torso; an imaging unit installed at one end of the imaging channel to capture images of the patient's larynx, pharynx, and trachea, and output corresponding image signals to the image processing unit; a blade inserted along an outer surface of the imaging channel and inserted into an organ through an oral cavity of a patient in a state of being coupled with the body; a display device displaying the image signal output from the image processing unit; and a coupling portion that couples the body portion and the display device so that the display device is rotatable at least 180 degrees, wherein the blade is lateral, and after the airway of the patient is secured, the tube is inserted into the airway of the patient. A guiding part is provided, the width of the guiding part is formed to be relatively wider than that of the tube, and the tube is intubated through the intubation space created by the guiding part, so that during intubation of the tube, the tube Guide is performed, the blade is provided with a protrusion for securing the airway by lifting the patient's epiglottis, the protrusion is formed extending from the end of the guide, and guides the patient's airway to be taken on the side of the imaging unit A male connector having a number of pins corresponding to the image signal line and the power supply line of the power supply unit, wherein an imaging guide partition wall is formed, and a curved surface is formed on the imaging guide partition wall to prevent intubation failure. ; a female connector having a hole into which the pin is inserted; a sleeve for maintaining a coupled state by screwing in a coupled state between the male connector and the female connector; and a rotation unit having a rotation shaft fixedly coupled to the display device at one side and coupled to the female connector at the other side and rotatably coupled to at least 180 degrees or more.

This prior invention has a structure in which the blade is in a fixed form, so when the space between the chin and the chest is narrow, especially when the patient's neck is not extended or the chest height is high, the gap between the chin and the chin is narrowed, so the posture of inserting the blade into the oral cavity , there was a problem that the upper end of the laryngoscope body was caught on the patient's chest, and due to this, there was a problem that the blade was not quickly inserted into the mouth.

Registered Patent No. 10-1600339 (registered on February 29, 2016)

An object of the present invention is to allow the blade angle to be variably adjusted according to the patient's physical condition when a tube is intubated into the patient's airway using a video laryngoscope having a variable blade angle.

The present invention for solving the conventional problems, the body portion provided with an image processing unit and a power supply unit inside the rod-shaped handle; a display unit installed on top of the body unit to display signals of the image processing unit in digitization; a blade unit installed to rotate at a lower end of the handle and provided with a blade having a length sufficient to secure an airway in the oral cavity of the patient; a photographing unit that photographs the laryngeal region of the patient through a lens installed in the blade and outputs the image to the image processing unit; a setting unit that allows the blade to be inserted into the oral cavity of the patient to be adjusted to a predetermined angle in the handle; a controller for locking and unlocking the blade angled at the handle; The object of the present invention will be sufficiently achieved by providing a configuration comprising a.

In a configuration in which the object of the present invention is achieved, the body part cuts the end of the handle to allow the blade to rotate from the lower end of the handle to the upper end, and drills the lower end of the handle. It is preferable to form a pin hole to be inserted into the head of the blade through the incision hole.

In a configuration in which the object of the present invention is achieved, the setting unit includes a slide hole formed by perforating the lower end of the handle in a vertical direction, a support hole formed inside the slide hole, an elastic spring installed in the support hole, Preferably, the knob body is installed between the slide hole and the elastic spring and comes into elastic contact with the head of the blade.

In a configuration in which the object of the present invention is achieved, the knob body is a knob operated in the slide hole, a disk in contact with the head of the blade, and a fastening element coupling the knob and the disk, and the disk is It is preferable to form an arc groove in contact with the head of the blade, and a protrusion for generating a control force by contacting and engaging with the head of the blade on the arc groove surface.

In the configuration in which the object of the present invention is achieved, the blade unit is provided with a lens at the end of a blade having a predetermined length to secure an airway through the oral cavity, and is mounted at the beginning end of the blade in an incision hole at the bottom of the handle, It is preferable to have a head into which a support pin is inserted into a branch axis, and to form a groove on an outer periphery of the head in a shape corresponding to the protrusion of the disk.

In a configuration in which the object of the present invention is achieved, the control unit includes a first control hole drilled at the lower side of the head of the blade, a second control hole formed at the end of the handle, and drilled at a position coincident with the first control hole, Consisting of a lock body mounted to the first control hole, a control ball mounted to the second control hole, and an adjustment ring installed at the lower end of the handle to move the control ball and lock body to locking and unlocking positions. It is desirable to configure the weight.

In a configuration in which the object of the present invention is achieved, the control ring has a locking groove formed at an inner diameter at a depth at which the control ball is locked in a surface contact with an outer diameter surface at an end of the handle, and a guide groove for releasing the lock of the control ball. Is formed, it is preferable that the guide groove is formed to be inclined at a gradually lower depth at one side boundary of the locking hole.

In a configuration in which the object of the present invention is achieved, the lock body is composed of a coil spring made of an elastic material and a lock pin installed in contact with both sides of the spring, and the lock pin is a hemispherical head in contact with the control ball. And, it is preferable to be configured to consist of a contact end of a flat head shape in contact with the coil spring.

In a configuration in which the object of the present invention is achieved, the blade is rotated at a point while being mounted at the end of the handle, and the insertion angle of the blade is configured to be selectively fixed in the range of 45 ° to 80 ° with respect to the reference axis of the handle It is preferable to

According to the present invention, since the angle of the laryngoscope blade is variable, the blade can be inserted into the oral cavity by adjusting the angle of the blade even when the space between the patient's chin and chest is narrow.

In the case of the present invention, such as high obesity, elderly people suffering from chronic obstructive pulmonary disease, women with large breasts, and patients with inability to extend the cervical spine, excessive motion and force are applied to insert the blade. It has the advantage of protecting against trauma and cervical fractures and spinal cord injuries.

1 is a state diagram taken on the chest when intubating the laryngoscope into the oral cavity of the patient.
2 is a state diagram of a video laryngoscope having a variable blade angle to which the present invention is applied;
Figure 3 is a cross-sectional view showing the angle adjustment structure of the blade provided at the bottom of the handle of Figure 2;
Figure 4 is an exploded perspective view of the angle adjustment configuration of the blade of Figure 3;
Figure 5 is an exploded perspective view of a control unit for blade angle adjustment in the laryngoscope to which the present invention is applied.
Figure 6 is a planar cross-sectional state of the control ring of the control unit of the present invention.
Figure 7 is a cross-sectional view showing the structure of the locked state of the control unit of the present invention.
Figure 8 is a cross-sectional view showing the structure of the release state of the control unit in the present invention.

Specific embodiments in which the present invention may be practiced are as follows with reference to the accompanying drawings.

It should be understood that these embodiments are described in sufficient detail to enable one skilled in the art to practice the present invention, but that the various embodiments of the present invention, while different, are not necessarily mutually exclusive.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily practice the present invention.

FIG. 2 shows a state of a video laryngoscope to which the angle of the blade is changed to which the present invention is applied, and FIG. 3 shows a cross-section showing a structure for adjusting the angle of a blade provided at the lower end of the handle of FIG. 2 .

As shown in FIG. 2, the video laryngoscope with a variable blade angle to which the present invention is applied has a handle 110 in a rod shape with a diameter suitable for the operator to hold with one hand, and a body part 100 equipped with an image processing unit and a power supply unit inside. A display unit 200 is provided at the upper end of the body unit 100 to display signals of the image processing unit in digitization.

And, at the lower end of the handle 110, a blade unit 300 equipped with a blade 310 formed with a length sufficient to secure the airway by being inserted into the patient's oral cavity and larynx is installed.

Inside the blade 310, a photographing unit 400 equipped with a lens 410 is installed that is inserted into the oral cavity of the patient and photographs the larynx and outputs the photographed image to the image processing unit inside the handle 110. .

The blade unit 300 includes a setting unit 500 installed between the handle 110 and the blade 310 to select the angle of the blade 310 inserted into the oral cavity according to the patient's extension state; A control unit 600 is provided to fix the blade 310 at a selected angle or release the fixed state.

The blade 310 of the blade unit 300 has a structure that cannot be rotated while being assembled and installed in a bent state at a 90° angle at the lower end of the conventional handle 110, and is used to secure an airway during emergency measures. There were a lot of inconveniences to do.

Accordingly, the present invention has a joint structure at the lower end of the handle 110 of the body portion 100 and a locking structure to facilitate securing the airway during emergency measures, thereby providing benefits for securing the golden time to save the patient's life.

A characteristic configuration of the present invention is a joint configuration to be formed at the lower end of the handle 110 of the body portion 100.

In this regard, a space in which the blade 310 can rotate in the incision hole 160 formed by first drilling the pin hole 140 at the lower end of the handle 110 and incising the end of the handle 110 toward the upper end. make it form

In addition, a pin hole 320 is formed at the center of the disk-shaped head 330 on one side of the blade 310, and is inserted into the pin hole 140 of the handle 110 and the pin hole 320 of the head 330. The support pin 150 to be formed.

The support pin 150 serves as an element for assembling the blade at the lower end of the handle 110 and at the same time acts as a fulcrum when the blade angle is unfolded or folded.

In a state in which the head 330 of the blade 310 is assembled in the cutout hole 116 at the bottom of the handle 110, the support pin 150 is inserted through each of the pin holes 140 and 320 to form the blade 310. is able to pivot at the lower end of the handle 110 with respect to the support pin 150.

Therefore, the blade 310 assembled at the lower end of the handle 110 is able to adjust the angle necessary for securing the airway by the joint action by the support pin 150.

Since the blade 310 can be rotated in the range of 90° to 160° with respect to the reference axis of the handle 110, the operator sets an angle that is easy to insert the blade 310 into the oral cavity according to the patient's extension state. It can be selected as the configuration of the unit 500.

First, the setting unit 500 causes a sawtooth-shaped groove 337 to be formed on the outer periphery of the disk-shaped head 330 of the blade 310 .

A support hole 530 is provided inside the incision hole 160 of the handle 110, and the support hole 530 is drilled at the lower side of the handle 110 and slides to select the rotation angle of the blade 310. A hole 510 is formed.

A knob 570 is installed in the slide hole 510 .

A disk 572 making surface contact with the head 330 of the blade 310 is installed in the support hole 530 provided inside the incision hole 160 .

In forming the disk 572, it is necessary to make the blade 310 rub against the circumferential surface 335 of the head 330 when selecting an angle that is easy to insert into the oral cavity of the patient.

To this end, a plurality of grooves 337 are formed on the circumferential surface of the head 330, and protrusions 575 engaged with the grooves 337 of the head 330 are formed on the contact surface of the disk 572 making surface contact. let it be

In addition, a coupling hole 573 into which a screw 574 is inserted is bored on the side surface of the disk 572 to be coupled with the knob 570 assembled to the slide hole 510.

Since the knob 570 is integrally assembled with the disk 572 by the screw 574 inserted into the coupling hole 573 of the disk 572, the disk 5672 handles ( 110) While moving up and down from the lower end, the protrusion 575 is engaged or separated from the groove 337, and the fulcrum rotation range of the blade 310 is set according to the engagement state.

At this time, since the elastic spring 550 is installed between the disk 572 and the support hole 530, the disk 572 is bent at the angle of the blade 310 by the compression return force generated in the support hole 530. can be set.

That is, since the compression return force of the disk 572 always maintains the engagement state with the groove 337 of the blade 310, the protrusion 575 adjusts the blade 310 to a desired angle, which is set at the adjusted angle. state will be maintained.

As described above, the angle selection of the blade 310 set in the handle 110 provides a very great benefit to a patient in an emergency.

In the present invention, the blade 310 adjusted to a predetermined angle by the joint structure provided in the handle 110 is provided with a feature that is very easy to insert into the oral cavity of the patient.

Since the blade 310 is in an open angle state, it is difficult to secure a space by pressing the airway in the oral cavity.

Therefore, the control unit 600 that can lock (lock) the angle of the blade at the end of the handle 110 in a solid state or release the lock (lock) to lock (lock) at a stable angle to secure the airway in the oral cavity to be composed.

Figure 5 shows an exploded state of the control unit for blade angle adjustment in the laryngoscope to which the present invention is applied, Figure 6 shows a flat cross-section of the control ring of the control unit of the present invention, Figure 7 is a locked state of the control unit of the present invention A cross section showing the structure is shown.

The controller 600 allows the first control hole 610 to be bored at a predetermined interval below the pin hole 320 punched in the head 330 of the blade 310, and the pin hole of the handle 110 ( 140) The second control hole 612 is perforated at a predetermined interval on the lower side.

A lock body 620 for securing the selected angle of the blade is mounted on the first control hole 610 drilled around the pin hole 320 of the blade 210.

In addition, the control ball 630 is mounted on the second control hole 612 punched at the end of the handle 110 to face the first control hole 610 of the blade 310.

One side of the second control hole 612 on which the control ball 630 is mounted has a diameter such that a part of the outer diameter surface of the control ball 630 to be inserted protrudes from the outer diameter surface of the handle 110.

The other side is formed with a diameter into which the lock pin 621 of the lock body 620 inserted into the first control hole 610 of the blade 310 is inserted.

The lock body 620 mounted to the first control hole 610 of the blade 310 includes a coil spring 623 made of an elastic material and a lock pin installed in contact with both sides of the coil spring 623 ( 621).

The lock pin 621 has a hemispherical head in contact with the control ball 630 and a flat contact end in contact with the coil spring 623 .

To lock and unlock the lock body 620, a control ring 640 is installed at the end of the handle 110.

As shown in FIG. 6, the control ring 640 is inserted into the end of the handle 110 and has a ring shape in which an inner diameter 641 in surface contact with an outer diameter surface is formed, and the control ball 630 is attached to the inner diameter 641. A locking groove 642 is formed at this locked depth.

A guide groove 643 is formed on one side of the lock groove 642 to release the lock of the control ball 630, and a groove dug along the inner diameter 641 on one side of the lock groove 642 gradually moves to a lower depth. It is preferable to process and form an oblique shape.

The guide groove 643 inclined along the inner diameter 641 of the adjusting ring 640 is a passage through which the control ball 630 and the lock pin 621 are moved from a locked state to an unlocked state.

In the concave locking groove 642 connected to the end of the guide groove 643, the control ball 630 and the lock pin 621 are kept locked so that the blade 310 moves at a predetermined angle at the bottom of the handle 110. It is the groove that makes it lock.

When the lock pin 621 is inserted into the lock groove 642 to be in a locked state, the elastic return force of the coil spring 623 pushes the lock pins 621 on both sides toward the control ball 630, so that the state is maintained. As shown in FIG. 3, the blade 310 provides a stable locked state in a state set at an angle of 80° to 110° from the bottom of the handle 110.

When the lock body 620 is mounted to the first control hole 610, the lock pin 621 of the lock body 620 is elastically inserted into the second control hole 621 drilled at the end of the handle, so that the blade ( 310) is fixed to the bottom of the handle 110.

In this way, in the locked state of the blade 310 by the lock body 620, the setting angle of the blade 310 forms an angle of 80 ° to 110 ° with respect to the vertical axis of the handle 110, and such a blade 310 The angle of is to provide a desirable state to secure the airway with a blade in the oral cavity.

When the operator rotates the control ring 640 in one direction in a locked state, the locking groove 642 is moved and moved to the position of the guide groove 643, so that the control ball 630 is pushed back and the lock pin ( 621) is in a state of being pulled out of the second control hole 612 of the handle 110 as shown in FIG. 8, and the locked state of the lock body 620 is released so that the angle selection of the blade 310 can be set to an unfolded state. do.

The laryngoscope of the present invention having the configuration as described above is used to secure the airway of a patient in an emergency, and the airway is closed by holding the handle 110 with one hand and inserting the blade 310 into the patient's oral cavity. steps will be taken to prevent this from happening.

When the blade 310 is placed on the handle 110 at an angle of 90 °, when the blade 310 is inserted, the upper end of the handle 110 is in contact with the patient's body as shown in FIG. 1, making it difficult to secure the airway. The medical staff will experience a condition that does not exist.

In this case, in the case of high obesity, elderly people suffering from chronic obstructive pulmonary disease, women with large breasts, and patients with inability to extend the cervical spine, excessive motion and force are applied to insert the blade, resulting in damage to teeth and oral soft tissue. There is a risk of cervical fracture or spinal cord injury, and it is difficult to quickly insert the blade 310 into the oral cavity, so airway securing time is delayed.

At this time, since the delayed time is very urgent for the patient, the airway securing time is shortened with the technical configuration of the present invention, and it is possible to facilitate oral insertion of the blade.

First, place a pillow on the patient's head and extend the neck to the maximum so that the airway is optimal for endotracheal intubation.

While holding the handle 110 with one hand, when the knob body 570 located at the bottom of the handle 110 is pushed and moved toward the top of the handle 110, the disk 572 coupled to the knob body 570 springs into an elastic spring. Since the blade 310 is separated from the blade 310 while compressing the 550, the angle setting of the blade 310 is released.

Therefore, since the blade 310 can be rotated from the base of the support pin 150 at the lower end of the handle 110, the operator can select the angle of the blade 310 within an angle range of 100° to 160°.

After selecting the angle of the blade 310, remove the force from the knob body 570 moved to the upper side of the handle 110.

When the force pushing the knob body 570 backward is removed, the knob body 570 moves forward by the elastic return force of the compressed elastic spring 550 .

The disk 572 of the knob body 570 adheres to the circumferential surface 335 of the blade 310 with a return elastic force, and the protrusion 575 of the disk 572 has a groove formed on the circumferential surface 335 of the blade 310. It is in a state of being engaged with 337, and the angle selection of the blade 310 is set.

In this way, if the angle of the blade 310 is selected from the handle 110, it can be varied within a range of 160 ° with respect to the vertical axis of the handle, so the operator can move the blade 310 from the handle 110 to an unfolded state suitable for the patient's extension state will be selected as

In such an unfolded state of the blade 310, the disk 572 is attached to the head 330 of the blade 310 with the support pin 150 at the bottom of the handle 110 as an axis by the elastic return force of the elastic spring 550. In close contact, the protrusion 575 of the disk 572 and the concave groove 337 of the circumferential surface 335 are mutually engaged, so that the angle can be selectively set while the blade 310 is spread out.

After selecting the unfolded state of the blade 310 as described above, the operator inserts the blade 310 into the oral cavity of the patient and pushes the knob 570 once again to release the disk 572 from the head 330 of the blade 310. make it separate

When the groove 337 of the blade 310 and the protrusion 573 of the disk 572 are separated, the handle 110 rotates with the support pin 150 assembled at the bottom of the handle 110 as a starting point. (110) and the blade 310 at an angle range of 80 ° ~ 110 ° in the unfolded angle range is constricted.

When the operator closes the handle 110 in an angle range of 80° to 110° while the blade 3210 is unfolded, the handle 110 rotates with the support pin 150 as the starting point, and the second control hole of the handle 110 When the lock pin 612 coincides with the lock pin 621, the lock pin 621 receiving the elastic force of the coil spring 623 tries to enter the second control hole 612, but the second control hole 612 is blocked by the control ball. (630) is blocking it, so it cannot enter.

At this time, when the adjusting ring 640 is turned from the unlocking position of FIG. 8 to the locking position of FIG. 7 , the control ball 630 under the return elastic force of the coil spring 623 moves to the locking groove 642 of the adjusting ring 640. At the same time as entering, the lock pin 621 also enters the second control hole 621 of the handle 110.

In the state where the adjusting ring 640 is moved to the locked position, the handle 110 is bent in an angle range of 80° to 110° by the joint action of the blade 310, so that the lock pin 621 of the blade 310 moves to the handle 110. ) has a structure inserted into the second control hole 612.

In this structure, when the handle 110 is pulled to secure the airway, the pulling force applied to the handle 110 presses the airway through the blade 310, so that the airway secures enough space to insert the hose.

In addition, the support pin 150 of the handle 110 and the lock pin 621 become the application points of the force, and the pulling force is transmitted very stably.

In this way, since the blade of the laryngoscope of the present invention is installed in a joint structure that is not fixed but rotates, it is easy to insert the blade into the oral cavity by spreading the blade for patients who may have difficulty securing an airway with the existing fixed laryngoscope. In this case, the blade is bent at the handle, and the bent state is firmly fixed so that airway can be secured more quickly.

Although embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above embodiments and can be manufactured in various different forms, and those skilled in the art to which the present invention belongs It will be understood that the present invention may be embodied in other specific forms without changing its spirit or essential characteristics.

Therefore, the embodiments described above should be understood as illustrative in all respects and not limiting.

100: body part 110: handle 130: image switch
140: pin hole 150: support pin 160: cut hole
200: display unit 300: blade unit 310: blade
320: pin hole 330: head 337: groove
400: photographing unit 410: lens 500: setting unit
510: slide hole 530: support hole 550: elastic spring
570: knob 572: disk 573: coupling hole
574: screw 575: stone 600: control unit
610: first control hole 612: second control hole 620: lock body
621: lock pin 623: spring 630: control ball
640: adjustment ring 641: inner diameter 642: lock groove
643: guide home

Claims (9)

A body portion equipped with an image processing unit and a power supply unit inside a rod-shaped handle;
a display unit installed on top of the body unit to display signals of the image processing unit in digitization;
a blade unit installed to rotate at a lower end of the handle and provided with a blade having a length sufficient to secure an airway in the oral cavity of the patient;
a photographing unit that photographs the laryngeal region of the patient through a lens installed in the blade and outputs the image to the image processing unit;
a setting unit that allows the blade to be inserted into the oral cavity of the patient to be adjusted to a predetermined angle in the handle; and
a controller for locking and unlocking the blade angled at the handle; Including,
The setting unit,
A slide hole formed near the cutout hole at the bottom of the handle, a support hole formed inside the slide hole and the cutout hole, an elastic spring installed in the support hole, and installed between the slide hole and the elastic spring. A video laryngoscope with a variable blade angle, characterized in that it consists of a knob body elastically contacted with the head of the blade. According to claim 1,
The body part,
A cutout hole in which the lower end of the handle is cut and the blade is inserted and mounted to rotate at a point;
A video laryngoscope with a variable blade angle, characterized in that the lower end of the handle is perforated, and a pin hole is formed through which a support pin is inserted into the head of the blade through the incision hole. delete According to claim 1,
The knob body,
A knob operated in the slide hole, a disk contacting the head of the blade, and a screw coupling the knob and the disk,
The video laryngoscope with a variable blade angle, characterized in that the disk is in contact with the head of the blade to form a protrusion in which a control force is generated by mutual engagement. delete According to claim 1,
The control unit,
A first control hole drilled in the lower side of the head of the blade;
A second control hole formed at the end of the handle and drilled at a position coincident with the first control hole;
A lock body mounted to the first control hole and a control ball mounted to the second control hole;
A video laryngoscope with a variable blade angle, characterized in that it consists of an adjustment ring installed at the lower end of the handle to move the control ball and lock body to lock and unlock positions. According to claim 6,
The control ring
A locking groove is formed at a depth at which the control ball is locked on the inner diameter that comes into surface contact with the outer diameter surface of the end of the handle, and a guide groove is formed to release the lock of the control ball,
A video laryngoscope with a variable blade angle, characterized in that the guide groove is formed to be inclined to a gradually lower depth at one side of the boundary of the lock groove. According to claim 6,
The lock body,
A coil spring made of an elastic material,
It consists of a lock pin installed in contact with both sides of the spring,
The video laryngoscope with a variable blade angle, characterized in that the lock pin is composed of a hemispherical head contacting the control ball and a flat head contact end contacting the coil spring. According to claim 1,
the blade,
A video laryngoscope with a variable blade angle, characterized in that it is rotated at a point while mounted on the lower end of the handle and the intubation angle of the blade is selectively fixed in an angle range of 80 ° to 160 ° with respect to the reference axis of the handle.

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