Surface anesthesia device for anesthetic laryngoscope

Abstract

The invention relates to the technical field of anaesthetic laryngoscopes, in particular to an anaesthetic laryngoscope surface anesthesia device which comprises a handle, a laryngoscope blade is arranged at the bottom end of the handle, a displayer is arranged on the upper portion of the side edge of the handle, a needle cylinder is arranged in the handle, and an injection tube is fixedly connected to the bottom end of the needle cylinder. An injection assembly is arranged on the upper portion of the needle cylinder, a feedback assembly is arranged in the middle of the side edge of the handle, and an adjusting assembly is arranged outside the injection tube. Compared with the prior art, the injection assembly is arranged, a rotary knob is rotated to drive a rotary rod to rotate, a driving wheel is driven to rotate under transmission of a first bevel gear and a second bevel gear, the driving wheel rotates to stir a rack to move, a push rod pushes a piston to move in a needle cylinder, and anesthetic is pushed into an injection pipe from the needle cylinder and sprayed out; stable and slow anesthetic injection is realized, and the situation that the device deviates and shakes due to direct pushing can be avoided, so that the discomfort of a patient is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of anesthesia laryngoscopes, in particular to anesthesia laryngoscope surface anesthesia devices. Background Art

[0002] Laryngoscope is the most commonly used method for laryngeal examination. Since patients are prone to vomiting due to sensitive stress during tracheal intubation, which is not conducive to the smooth progress of tracheal intubation, laryngoscope is often needed to perform surface anesthesia on the patient's throat. The anesthesia laryngoscope surface anesthesia device is a complex device that integrates laryngoscope, anesthetic delivery, control and additional functions.

[0003] In the prior art, a Chinese patent document with publication number CN219646485U proposes a laryngoscope surface anesthesia device, which includes an operating cylinder, a drug storage tank is provided on the inner side of the operating cylinder, a drug injection hole is provided at the bottom of the drug storage tank, a drug injection hole is provided on the upper inner wall of the drug storage tank, a limit ring is fixedly provided on the outer side of one end of the drug injection hole, a sealing member is plugged into the outer side of the other end of the drug injection hole, movable grooves are symmetrically provided on both sides of the outer wall of the operating cylinder, a drug pushing assembly is movably plugged into the inner side of the movable groove, and a push plate is pushed by pressing the thumb to drive the push rod on the inner side of the drug storage tank and the sealing pad. The laryngoscope moves downward to push the medicine. After sufficient anesthetic liquid is injected into the medicine storage tank, the push rod can be slowly pushed down once to allow the anesthetic liquid to continuously and stably enter the nebulizer to spray the anesthetic mist stably and continuously. However, when the doctor pushes the anesthetic, he needs to apply a certain pushing force to complete the pushing operation. Since the body of the laryngoscope is located in the patient's oral cavity and throat at this time, the application of pushing pressure will inevitably cause the device to shake, and touching the patient's throat will cause discomfort. Therefore, the present application provides an anesthetic laryngoscope surface anesthesia device to meet the needs of reducing shaking when injecting anesthetics, thereby reducing the patient's discomfort. Summary of the invention

[0004] In view of this, the purpose of the present invention is to propose an anesthesia laryngoscope surface anesthesia device to solve the problem that the pushing pressure applied during the pushing of anesthetics may cause the device to shake and cause discomfort to the patient.

[0005] Based on the above purpose, the present invention provides an anesthesia laryngoscope surface anesthesia device, comprising a handle, a laryngoscope blade is arranged at the bottom end of the handle, a display is arranged at the upper part of the side of the handle, a syringe is arranged inside the handle, a syringe is fixedly connected to the bottom end of the syringe, an injection assembly is arranged at the upper part of the syringe, a feedback assembly is arranged at the middle part of the side of the handle, and an adjustment assembly is arranged outside the syringe;

[0006] The injection assembly acts on the inside of the syringe, the feedback assembly acts on the injection assembly to provide feedback and lock during the injection process, and the adjustment assembly is arranged in linkage with the injection assembly to provide adjustment during the injection process.

[0007] Preferably, the injection assembly includes a push rod movably inserted into the top end of the syringe, a rack is embedded in the outer surface of the push rod, the end of the push rod extending into the syringe is fixedly connected to a piston, a positioning ring is fixedly connected to the middle part of the side of the handle, the interior of the positioning ring is rotatably connected to a rotating rod, and the end of the rotating rod extending into the handle is fixedly connected to a bevel gear.

[0008] Preferably, the inner wall of the syringe is rotatably connected to a shaft rod, the outer surface of the shaft rod is fixedly sleeved with a second bevel gear, the second bevel gear is meshingly connected with a first bevel gear, the middle portion of the outer surface of the shaft rod is fixedly sleeved with a drive wheel, the drive wheel is meshingly connected with a rack.

[0009] Preferably, one end of the rotary rod extending out of the positioning ring is fixedly connected with a knob, and the injection tube passes through the bottom of the handle and is attached to the outer surface of the laryngoscope blade.

[0010] Preferably, the feedback assembly includes a circular ring rotatably connected to the outer surface of the positioning ring, a clamping ring is fixedly connected to the inner wall of the circular ring, cylinders are distributed in a ring matrix on the side of the positioning ring close to the knob, a clamping rod is movably inserted into the end of the cylinder away from the rotating rod, the clamping rod slides inside the clamping ring, a spring is arranged inside the cylinder, and a ball is arranged at the intersection of the bottom of the cylinder and the rotating rod.

[0011] Preferably, the outer surface of the rotating rod is provided with circular grooves in an annular matrix, the ball is clamped in the inner part of the circular groove, the spring abuts against the outer surface of the ball, and the clamping rod abuts against the end of the spring away from the ball.

[0012] Preferably, an arc-shaped groove is provided inside the clamping ring, and the clamping ring is movably clamped inside the arc-shaped groove.

[0013] Preferably, the adjustment assembly includes a driving wheel fixedly mounted on the outer surface of the rotating rod, a driven wheel movably mounted on the inner wall of the handle, the driving wheel is meshingly connected to the driven wheel, a shift block is fixedly connected to the outer surface of the driven wheel, and a strip slide rod is limitedly slidably connected to the inner wall of the handle, and the strip slide rod is movably mounted on the outer surface of the shift block.

[0014] Preferably, the end of the injection tube away from the syringe is fixedly connected to a bellows, the end of the bellows away from the injection tube is provided with an atomizing nozzle, the side of the atomizing nozzle is provided with an elastic rope, and the end of the elastic rope away from the atomizing nozzle is fixedly connected to the side of the laryngoscope blade.

[0015] Preferably, a wire rope is fixedly connected to the lower surface of the strip slide bar, one end of the wire rope away from the strip slide bar passes through the bottom end of the handle and is fixedly connected to the outer surface of the atomizing nozzle, a positioning card plate is provided on the upper side of the laryngoscope blade, the positioning card plate covers the outer surface of the wire rope, and the wire rope is in a stretched state.

[0016] Beneficial effects of the present invention:

[0017] 1. This type of surface anesthesia device for anesthesia laryngoscope is provided with an injection component. The rotary rod is driven to rotate by turning the knob, and the driving wheel is driven to rotate under the transmission of bevel gears 1 and 2. The rotation of the driving wheel will drive the rack to move, and the push rod pushes the piston to move in the syringe, pushing the anesthetic from the syringe into the injection tube and spraying it out, thereby achieving a smooth and slow injection of the anesthetic, avoiding the deviation and shaking of the device caused by direct pushing, thereby reducing the patient's discomfort.

[0018] 2. This type of surface anesthesia device of anesthesia laryngoscope is provided with a feedback component. During the process of injecting anesthetics, the ball will circulate between separation and engagement with the circular groove under the action of the spring, thereby realizing real-time feedback during the pushing process, which is helpful for the doctor to grasp the amount of medicine pushed. The rotating ring can drive the clamping ring to rotate, thereby driving the clamping rod to move and press the ball into the circular groove, thereby achieving the effect of locking the rotating rod and avoiding the leakage of anesthetics due to accidental touch.

[0019] 3. This type of anesthesia laryngoscope surface anesthesia device, by setting an adjustment component, drives the strip slide bar to slide up and down under the transmission of the driving wheel and the driven wheel while injecting anesthetics, pulls the atomizing nozzle through the wire rope, and cooperates with the elastic rope to achieve the effect of swinging the atomizing nozzle during the injection process, ensuring that the anesthetic spray is sprayed more evenly and improving the anesthesia effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the partial cutaway structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of the handle of the present invention;

[0024] Figure 4 It is a schematic diagram of the rotary rod connection structure of the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of the feedback component of the present invention;

[0026] Figure 6 This is a schematic diagram of the driven wheel driving structure of the present invention;

[0027] Figure 7 It is a schematic diagram of the connection structure of the laryngoscope blade of the present invention.

[0028] The markings in the figure are:

[0029] 1. Handle; 2. Laryngoscope blade; 3. Display; 4. Syringe; 501. Push rod; 502. Rack; 503. Piston; 504. Rotary rod; 505. Knob; 506. Bevel gear 1; 507. Shaft; 508. Bevel gear 2; 509. Driving wheel; 510. Positioning ring; 601. Circular ring; 602. Snap ring; 603. Cylinder; 604. Clamping rod; 605. Spring; 606. Sphere; 607. Circular groove; 608. Arc groove; 7. Injection tube; 801. Driving wheel; 802. Driven wheel; 803. Shifting block; 804. Strip slide bar; 805. String; 806. Positioning card plate; 807. Elastic rope; 808. Bellows; 809. Atomizing nozzle. DETAILED DESCRIPTION

[0030] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0031] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0032] like Figures 1 to 7As shown, an anesthesia laryngoscope surface anesthesia device comprises a handle 1, a laryngoscope blade 2 is arranged at the bottom end of the handle 1, a display 3 is arranged at the upper part of the side of the handle 1, a syringe 4 is arranged inside the handle 1, a syringe 7 is fixedly connected to the bottom end of the syringe 4, an injection assembly is arranged at the upper part of the syringe 4, a feedback assembly is arranged at the middle part of the side of the handle 1, an adjustment assembly is arranged outside the syringe 7, the injection assembly acts on the inside of the syringe 4, the feedback assembly acts on the injection assembly, plays a role of feedback and locking during the injection process, and the adjustment assembly is arranged in linkage with the injection assembly, plays a role of adjustment during the injection process;

[0033] The doctor inserts the laryngoscope blade 2 into the patient's throat, and the camera at the end of the laryngoscope blade 2 passes through the patient's throat on the display 3. The injection component can be used to smoothly and slowly inject anesthetics, and the deviation and shaking of the device caused by direct pushing can be avoided, thereby reducing the patient's discomfort. During the injection process, the feedback component provides feedback to help the doctor grasp the amount of medicine pushed. In addition, the anesthetic spray can be sprayed more evenly by adjusting the component.

[0034] like Figure 2 , Figure 3 and Figure 4 As shown, the injection assembly includes a push rod 501 movably inserted into the top of the syringe 4, a rack 502 is embedded in the outer surface of the push rod 501, and the end of the push rod 501 extending into the syringe 4 is fixedly connected to the piston 503, a positioning ring 510 is fixedly connected to the middle of the side of the handle 1, and the inner part of the positioning ring 510 is rotatably connected to a rotating rod 504, and the end of the rotating rod 504 extending into the handle 1 is fixedly connected to a bevel gear 1 506, and the inner wall of the syringe 4 is rotatably connected to an axle rod 507, and the outer surface of the axle rod 507 is fixedly sleeved with a bevel gear 2 508, and the bevel gear 2 508 is meshed with the bevel gear 1 506, and the middle part of the outer surface of the axle rod 507 is fixedly sleeved with a driving wheel 509, and the driving wheel 509 is meshed with the rack 502, and the end of the rotating rod 504 extending out of the positioning ring 510 is fixedly connected to a knob 505, and the injection tube 7 passes through the bottom of the handle 1 and is attached to the outer surface of the laryngoscope blade 2;

[0035] Turning the knob 505 drives the rotating rod 504 to rotate. During the rotation of the rotating rod 504, the bevel gear 1 506 rotates accordingly and drives the bevel gear 2 508 to rotate. The bevel gear 2 508 drives the driving wheel 509 to rotate synchronously through the shaft 507. The driving wheel 509 is meshed with the rack 502 inside the push rod 501. Then the rotation of the driving wheel 509 will drive the rack 502 to move, thereby driving the push rod 501 to move into the syringe 4. The push rod 501 pushes the piston 503 to move in the syringe 4, pushes the anesthetic from the syringe 4 into the injection tube 7 and sprays it out, achieving the effect of local paralysis. The pushing method using the rotating knob 505 is more stable than the pushing pressure applied by direct pushing. The injection process can be avoided, and the device deviation and shaking caused by direct pushing can be avoided, thereby reducing the patient's discomfort.

[0036] like Figure 2 , Figure 4 and Figure 5 As shown, the feedback component includes a ring 601 rotatably connected to the outer surface of the positioning ring 510, a snap ring 602 is fixedly connected to the inner wall of the ring 601, a cylinder 603 is distributed in an annular matrix on one side of the positioning ring 510 close to the knob 505, a clamping rod 604 is movably inserted into the end of the cylinder 603 away from the rotating rod 504, and the clamping rod 604 slides inside the snap ring 602, a spring 605 is arranged inside the cylinder 603, a ball 606 is arranged at the intersection of the bottom of the cylinder 603 and the rotating rod 504, a circular groove 607 is provided in the annular matrix on the outer surface of the rotating rod 504, the ball 606 is clamped inside the circular groove 607, the spring 605 abuts on the outer surface of the ball 606, the clamping rod 604 abuts on the end of the spring 605 away from the ball 606, an arc groove 608 is provided inside the snap ring 602, and the snap ring 602 is movably clamped inside the arc groove 608;

[0037] During the rotation of the rotary rod 504, the rotary rod 504 and the ball 606 will rotate and displace, thereby pushing the ball 606 to slide out of the circular groove 607 and squeezing the spring 605. When the next circular groove 607 is aligned with the ball 606, the ball 606 will be snapped into the current circular groove 607 under the elastic force of the spring 605, thereby generating slight vibration and a ticking sound when snapping, achieving the feedback effect achieved by rotating the knob 505, realizing real-time feedback during the pushing process, and helping the doctor to grasp the amount of medicine pushed. In addition, the snap ring 602 can be driven to rotate by rotating the circular ring 601. During the rotation of the snap ring 602, it will slide relative to the clamping rod 604. Since the clamping rod 604 is clamped in the arc groove 608, it will drive the clamping rod 604 to slide in the arc groove 608, and the clamping rod 604 will move into the cylinder 603 and squeeze the spring 605, so that the ball 606 is fixed in the circular groove 607. At this time, turning the knob 505 will encounter greater resistance, thereby achieving the effect of locking the rotating rod 504 and avoiding the outflow of anesthetic caused by accidental touch.

[0038] like Figure 2 , Figure 4 , Figure 6 and Figure 7 As shown, the adjustment component includes a driving wheel 801 fixedly sleeved on the outer surface of the rotating rod 504, a driven wheel 802 is movably arranged on the inner wall of the handle 1, the driving wheel 801 is meshed and connected with the driven wheel 802, a shift block 803 is fixedly connected to the outer surface of the driven wheel 802, a strip slide bar 804 is limitedly slidably connected to the inner wall of the handle 1, the strip slide bar 804 is movably sleeved on the outer surface of the shift block 803, the end of the injection tube 7 away from the syringe 4 is fixedly connected to the bellows 808, and the end of the bellows 808 away from the injection tube 7 is provided with Atomizing nozzle 809, an elastic rope 807 is arranged on the side of the atomizing nozzle 809, one end of the elastic rope 807 away from the atomizing nozzle 809 is fixedly connected to the side of the laryngoscope blade 2, a line 805 is fixedly connected to the lower surface of the strip slide 804, one end of the line 805 away from the strip slide 804 passes through the bottom end of the handle 1 and is fixedly connected to the outer surface of the atomizing nozzle 809, a positioning card plate 806 is arranged on the upper side of the laryngoscope blade 2, the positioning card plate 806 covers the outer surface of the line 805, and the line 805 is in a straight state;

[0039] When the rotary rod 504 is rotated to push the anesthetic, the active wheel 801 drives the driven wheel 802 to rotate as the rotary rod 504 rotates, and the driven wheel 802 drives the shift block 803 to rotate around its center during rotation. The shift block 803 drives the bar slide bar 804 to slide up and down while rotating, and then pulls the rope 805. The pulled rope 805 drives the atomizing nozzle 809 to deviate with the bellows 808 as the center point. At this time, the elastic rope 807 is stretched. When the bar slide bar 804 moves downward, the rope 805 relaxes, and the rebound of the elastic rope 807 drives the atomizing nozzle 809 to deviate in the opposite direction, thereby achieving the swinging effect of the atomizing nozzle 809 during the injection process, ensuring that the anesthetic spray is sprayed more evenly and improving the anesthesia effect.

[0040] The technical solution provided by the present invention is that the doctor inserts the laryngoscope blade 2 into the throat of the patient, and injects the anesthetic in the syringe 4 into the throat of the patient through the injection assembly. Specifically, the knob 505 is turned to drive the rotary rod 504 to rotate. During the rotation of the rotary rod 504, the bevel gear 1 506 rotates accordingly and drives the bevel gear 2 508 to rotate. The bevel gear 2 508 drives the driving wheel 509 to rotate synchronously through the shaft 507. The driving wheel 509 is meshed with the rack 502 inside the push rod 501, and then the rotation of the driving wheel 509 will move the rack 502. The push rod 501 is moved to move into the syringe 4, and the push rod 501 pushes the piston 503 to move in the syringe 4, pushing the anesthetic from the syringe 4 into the injection tube 7, and finally spraying it from the atomizing nozzle 809 to achieve the effect of local paralysis. The pushing method of rotating the knob 505 is more stable than the pushing force applied by direct pushing. The device deviation and shaking caused by direct pushing can be avoided, thereby reducing the patient's discomfort. The ball 606 is stuck in the circular groove 607 under the action of the spring 605. In the process of rotating the rotary rod 504, the rotary rod 504 and the ball 606 will rotate and displace, which will push the ball 606 to slide out of the circular groove 607 and squeeze the spring 605. When the next circular groove 607 is aligned with the ball 606, the ball 606 will be stuck in the current circular groove 607 under the elastic force of the spring 605, thereby generating slight vibration and a ticking sound when the engagement is made, achieving the feedback effect of rotating the knob 505, realizing real-time feedback during the pushing process, and helping the doctor to grasp the amount of medicine pushed. In addition, the snap ring 602 can be driven to rotate by rotating the circular ring 601. During the rotation of the snap ring 602, relative sliding occurs between the snap ring 602 and the clamping rod 604. Since the clamping rod 604 is clamped in the arc groove 608, the clamping rod 604 is driven to slide in the arc groove 608. The clamping rod 604 moves into the cylinder 603 and squeezes the spring 605, so that the ball 606 is fixed in the circular groove 607. At this time, rotating the knob 505 will encounter greater resistance, thereby achieving the effect of locking the rotating rod 504 and preventing the anesthetic from leaking out due to accidental touch.

[0041] When the rotary rod 504 is rotated to push the anesthetic, the active wheel 801 drives the driven wheel 802 to rotate as the rotary rod 504 rotates, and the driven wheel 802 drives the shift block 803 to rotate around its center during rotation. The shift block 803 drives the bar slide bar 804 to slide up and down while rotating, and then pulls the rope 805. The pulled rope 805 drives the atomizing nozzle 809 to deviate with the bellows 808 as the center point. At this time, the elastic rope 807 is stretched. When the bar slide bar 804 moves downward, the rope 805 relaxes, and the rebound of the elastic rope 807 drives the atomizing nozzle 809 to deviate in the opposite direction, thereby achieving the swinging effect of the atomizing nozzle 809 during the injection process, ensuring that the anesthetic spray is sprayed more evenly and improving the anesthesia effect.

[0042] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0043] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Anesthesia laryngoscope surface anesthesia device, characterized in that, The invention comprises a handle (1), a laryngoscope blade (2) is arranged at the bottom end of the handle (1), a display (3) is arranged at the upper part of the side of the handle (1), a syringe (4) is arranged inside the handle (1), a syringe (7) is fixedly connected to the bottom end of the syringe (4), an injection assembly is arranged at the upper part of the syringe (4), a feedback assembly is arranged at the middle part of the side of the handle (1), and an adjustment assembly is arranged outside the syringe (7); The injection assembly acts on the interior of the syringe (4), the feedback assembly acts on the injection assembly to provide feedback and lock during the injection process, and the adjustment assembly is arranged in linkage with the injection assembly to provide adjustment during the injection process.

2. The anesthesia laryngoscope surface anesthesia device according to claim 1, characterized in that: The injection assembly comprises a push rod (501) movably inserted into the top end of the syringe (4), a rack (502) is embedded in the outer surface of the push rod (501), one end of the push rod (501) extending into the syringe (4) is fixedly connected to a piston (503), a positioning ring (510) is fixedly connected to the middle of the side of the handle (1), a rotating rod (504) is rotatably connected inside the positioning ring (510), and one end of the rotating rod (504) extending into the handle (1) is fixedly connected to a bevel gear (506).

3. The anesthesia laryngoscope surface anesthesia device according to claim 2, characterized in that: The inner wall of the syringe (4) is rotatably connected to a shaft (507), the outer surface of the shaft (507) is fixedly sleeved with a bevel gear 2 (508), the bevel gear 2 (508) is meshingly connected with the bevel gear 1 (506), and the middle part of the outer surface of the shaft (507) is fixedly sleeved with a driving wheel (509), and the driving wheel (509) is meshingly connected with the rack (502).

4. The anesthesia laryngoscope surface anesthesia device according to claim 3, characterized in that: One end of the rotating rod (504) extending out of the positioning ring (510) is fixedly connected to a rotating knob (505), and the injection tube (7) passes through the bottom of the handle (1) and is attached to the outer surface of the laryngoscope blade (2).

5. The anesthesia laryngoscope surface anesthesia device according to claim 4, characterized in that: The feedback component comprises a circular ring (601) rotatably connected to the outer surface of a positioning ring (510), a retaining ring (602) being fixedly connected to the inner wall of the circular ring (601), a circular matrix of cylinders (603) being distributed on one side of the positioning ring (510) close to the knob (505), a retaining rod (604) being movably inserted through one end of the cylinder (603) away from the rotating rod (504), the retaining rod (604) sliding inside the retaining ring (602), a spring (605) being arranged inside the cylinder (603), and a ball (606) being arranged at the intersection of the bottom of the cylinder (603) and the rotating rod (504).

6. The anesthesia laryngoscope surface anesthesia device according to claim 5, characterized in that: The outer surface of the rotating rod (504) is provided with a circular groove (607) in an annular matrix, the ball (606) is clamped in the inner part of the circular groove (607), the spring (605) abuts against the outer surface of the ball (606), and the clamping rod (604) abuts against the end of the spring (605) away from the ball (606).

7. The anesthesia laryngoscope surface anesthesia device according to claim 6, characterized in that: An arc-shaped groove (608) is provided inside the clamping ring (602), and the clamping ring (602) is movably clamped inside the arc-shaped groove (608).

8. The anesthesia laryngoscope surface anesthesia device according to claim 7, characterized in that: The adjustment assembly comprises a driving wheel (801) fixedly sleeved on the outer surface of a rotating rod (504); a driven wheel (802) is movably arranged on the inner wall of the handle (1); the driving wheel (801) is meshingly connected with the driven wheel (802); a shifting block (803) is fixedly connected to the outer surface of the driven wheel (802); a strip sliding rod (804) is limitedly slidably connected to the inner wall of the handle (1); and the strip sliding rod (804) is movably sleeved on the outer surface of the shifting block (803).

9. The anesthesia laryngoscope surface anesthesia device according to claim 8, characterized in that: The end of the injection tube (7) away from the syringe (4) is fixedly connected to a bellows (808), the end of the bellows (808) away from the injection tube (7) is provided with an atomizing nozzle (809), the side of the atomizing nozzle (809) is provided with an elastic rope (807), and the end of the elastic rope (807) away from the atomizing nozzle (809) is fixedly connected to the side of the laryngoscope blade (2).

10. The anesthesia laryngoscope surface anesthesia device according to claim 9, characterized in that: The lower surface of the strip slide bar (804) is fixedly connected with a wire rope (805); one end of the wire rope (805) away from the strip slide bar (804) passes through the bottom end of the handle (1) and is fixedly connected to the outer surface of the atomizing nozzle (809); a positioning card plate (806) is provided on the upper side of the laryngoscope blade (2); the positioning card plate (806) covers the outer surface of the wire rope (805); and the wire rope (805) is in a stretched state.

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