Eustachian tube endoscope

Abstract

The invention discloses an Eustachian tube endoscope, which comprises a handle body, an examination unit, a first driving unit, a second driving unit and a treatment unit, and is characterized in that the handle body comprises a sleeve; the examination unit comprises a catheter and a camera, the catheter penetrates through the sleeve in a sliding mode, one end of the catheter is of a bendable structure, and the camera is fixedly connected with one end of the catheter and used for shooting the interior of the eustachian tube; the first driving unit is connected with the other end of the guide pipe and used for driving the guide pipe to reciprocate in the length direction of the sleeve. The Eustachian tube endoscope has the advantages that the condition in the Eustachian tube is observed through the camera, the camera can be alternately bent towards the two sides in the plane, the shooting angle of the camera is changed, the Eustachian tube endoscope can have a large observation range in a narrow nasal cavity, and therefore the situation that a visual angle which cannot be shot exists in the Eustachian tube is avoided; and the surgical operation is more convenient.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, and in particular to a Eustachian tube endoscope. Background Art

[0002] The Eustachian tube (ET) is a dynamic structure that is traditionally classified as part of the auditory system. The ET is a narrow epithelial-lined tube that extends from the middle ear to the nasopharynx, connecting the middle ear and the nasopharynx, and is important for the health of the middle ear and the hearing function of the human ear. Due to the small space of the Eustachian tube itself and the many symptoms of the disease, traditional medical methods are difficult to achieve effective treatment of Eustachian tube-related diseases.

[0003] Eustachian tube dysfunction (ETD) is a common disease in the clinical diagnosis and treatment of otolaryngologists. Typical symptoms include ear fullness, hazy hearing, ear pain, inability to balance middle ear air pressure, tinnitus, and vertigo. Long-term presence of ETD can cause ear diseases such as tympanic membrane perforation, chronic secretory otitis media, and middle ear cholesteatoma. In modern medical fields, the Eustachian tube inspection and treatment device is used to simultaneously realize the inspection and treatment of the Eustachian tube to relieve the pain of patients.

[0004] When inspecting and treating the patient's Eustachian tube, the existing Eustachian tube inspection and treatment device (such as the Eustachian tube OCT, Eustachian tube balloon dilatation booster, and the application of OCT in Eustachian tube balloon surgery disclosed in application number 202210993954.1) uses an imaging probe and an imaging catheter to enter the patient's Eustachian tube to obtain visual images of the patient's Eustachian tube, and the doctor uses a balloon guidewire to perform surgery in the patient's body. However, the shooting angle of the imaging probe is fixed, and it is easy to have visual blind spots that are difficult for the imaging probe to shoot, which interferes with the doctor's surgical operation. Therefore, how to avoid the visual blind spots of the imaging probe is a technical problem that needs to be solved urgently. Summary of the invention

[0005] The purpose of the present invention is to overcome the above technical deficiencies and to provide a Eustachian tube endoscope to solve the technical problem in the prior art that the imaging probe has a fixed shooting angle and is prone to visual blind spots that are difficult for the imaging probe to shoot.

[0006] In order to achieve the above technical objectives, the technical solution of the present invention provides a Eustachian tube endoscope, comprising: A handle body including a sleeve; An inspection unit, comprising a catheter and a camera, wherein the catheter slides through the sleeve, one end of the catheter is a bendable structure, and the camera is fixedly connected to one end of the catheter for photographing the inside of the Eustachian tube; A first driving unit, connected to the other end of the catheter, and used to drive the catheter to reciprocate along the length direction of the sleeve; a second driving unit, connected to the first driving unit and to one end of the catheter, and used to drive the one end of the catheter to bend alternately to both sides; The treatment unit comprises a guide wire and a balloon. The guide wire slides through the sleeve, and the balloon is fixedly connected to one end of the guide wire to treat the lesion in the Eustachian tube.

[0007] Furthermore, the handle body also includes an outer shell and an inner shell, the outer shell has a first cavity, one end of the sleeve is fixedly connected to the outer shell and communicated with the first cavity, the other end of the catheter extends into the first cavity, the inner shell is slidably disposed in the first cavity and fixedly connected to the other end of the catheter, the inner shell has a second cavity, and the first driving unit is connected to the inner shell for driving the inner shell to reciprocate along the length direction of the sleeve.

[0008] Furthermore, the first driving unit includes a first rack, a first gear, a first driving shaft, a first nut and a first knob. The first rack is arranged in the first cavity and extends along the length direction of the sleeve. The first rack is fixedly connected to the inner shell. The first gear is arranged in the first cavity and meshes with the first rack. One end of the first driving shaft is arranged in the first cavity and coaxially fixedly connected to the first gear. The other end of the first driving shaft rotates through the outer shell and extends out of the outer shell. A first thread is arranged on the other end of the first driving shaft. The first nut is arranged outside the outer shell and sleeved on the first driving shaft. The first nut is threadedly connected to the first thread. The first nut is used to press against or separate from the outer shell. The first knob is arranged outside the outer shell and fixedly connected to the end of the first driving shaft.

[0009] Furthermore, the second driving unit includes two traction ropes and a driving assembly, the two traction ropes both pass through the sleeve and are respectively arranged on both sides of the catheter, one end of the two traction ropes is fixedly connected to one end of the catheter, and the driving assembly is connected to the inner shell and to the other ends of the two traction ropes, and is used to drive the two traction ropes to move synchronously and reversely along the length direction of the catheter so that one end of the catheter bends alternately to both sides.

[0010] Furthermore, the driving assembly includes two second racks, a second gear, a second driving shaft, a second nut and a second knob. The two second racks are both arranged in the second cavity and extend along the length direction of the sleeve. The two second racks are both slidably connected to the inner shell and are also connected to the other ends of the two traction ropes in a one-to-one manner. The second gear is arranged in the second cavity and is located between the two second racks. The second gear is meshed with the two second racks. One end of the second driving shaft is arranged in the second cavity and is coaxially fixed with the second gear. The other end of the second driving shaft rotates through the inner shell and the outer shell and extends out of the outer shell. A second thread is arranged on the other end of the second driving shaft. The second nut is arranged outside the outer shell and sleeved on the second driving shaft. The second nut is threadedly connected to the second thread. The second nut is used to press against or separate from the outer shell. The second knob is arranged outside the outer shell and is fixed to the end of the second driving shaft.

[0011] Furthermore, the second driving unit includes two tensioning assemblies, and the two tensioning assemblies are both arranged in the second cavity and are connected to the two second racks in a one-to-one correspondence, and are also connected to the other ends of the two traction ropes in a one-to-one correspondence, for tensioning the traction ropes.

[0012] Furthermore, the tensioning assembly includes a base, a rotating shaft, a ratchet pair and an elastic member, the base is fixedly connected to the second rack, one end of the rotating shaft is rotatably connected to the base, and the other end of the rotating shaft is connected to the other end of the traction rope, the first ratchet of the ratchet pair is rotatably sleeved on the rotating shaft and close to the base, the second ratchet of the ratchet pair is fixedly sleeved on the rotating shaft and away from the base, the approaching surfaces of the first ratchet and the second ratchet are meshed with each other, so that the second ratchet can only rotate in the positive direction relative to the first ratchet and tension the traction rope, the elastic member is arranged between the base and the first ratchet and sleeved on the rotating shaft, and the two ends of the elastic member are respectively fixed to the base and the first ratchet.

[0013] Furthermore, the outer shell is provided with two through holes, the two through holes are coaxially arranged and are both connected to the first cavity, one end of the sleeve is connected to one of the through holes, the inner shell is provided with two channels, the two channels extend along the length direction of the sleeve, and the guide wire slides through one of the through holes, one of the channels, the other through hole and the sleeve in sequence.

[0014] Furthermore, the Eustachian tube endoscope also includes a lighting unit, and the lighting unit is used to illuminate the camera.

[0015] Furthermore, the lighting unit includes an optical fiber and a cold light source, the optical fiber slides through one of the through holes, another of the channels, another of the through holes and the sleeve in sequence, and the cold light source is arranged outside the housing and electrically connected to the optical fiber.

[0016] Compared with the prior art, the beneficial effects of the present invention include: when in use, the physician holds the cannula, inserts one end of the cannula into the nasal cavity, and controls the first driving unit so that the first driving unit can drive the catheter to move inward along the length direction of the cannula until one end of the catheter reaches the Eustachian tube, and drives the camera to reach the Eustachian tube, and the inside of the Eustachian tube can be photographed by the camera. When it is necessary to adjust the shooting angle of the camera, the second driving unit is controlled so that the second driving unit can drive one end of the catheter to bend alternately to both sides, so that the camera bends alternately to both sides, and the shooting angle of the camera is changed. The field of view provided by the camera can clearly and accurately find the lesion, which is convenient for the physician to quickly make a judgment on the disease, and the physician can drive the cannula to bend alternately to both sides. The guide wire moves inward along the length of the cannula until one end of the guide wire reaches the Eustachian tube, and drives the balloon to the Eustachian tube. The expansion of the balloon reopens the blocked and inflamed parts of the Eustachian tube. The physician then pulls the guide wire outward along the length of the cannula until one end of the guide wire retreats into the cannula, and drives the balloon back into the cannula, so that pus in the lesion can be discharged, thereby achieving the treatment effect of ETD. The Eustachian tube endoscope observes the situation in the Eustachian tube through a camera. The camera can bend alternately to both sides in a plane to change the shooting angle of the camera, so that it can have a larger observation range in the narrow nasal cavity, thereby avoiding visual angles that cannot be photographed in the Eustachian tube, making the surgical operation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of a Eustachian tube endoscope provided by the present invention; Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of a Eustachian tube endoscope with part of the outer shell omitted; Figure 3 yes Figure 2 A schematic diagram of the three-dimensional structure of a Eustachian tube endoscope after omitting part of the inner shell and the sleeve; Figure 4 yes Figure 3 A schematic diagram of the stereoscopic structure of a Eustachian tube endoscope in another viewing angle; Figure 5 yes Figure 3 The enlarged view of A in FIG. In the figure: 100 - handle body, 110 - sleeve, 120 - outer shell, 121 - first cavity, 122 - waist-shaped groove, 123 - opening, 124 - through hole, 130 - inner shell, 131 - second cavity, 1311 - slide groove, 132 - opening, 133 - channel, 140 - slide rail, 150 - slider, 200 - inspection unit, 210 - catheter, 220 - camera, 300 - first drive unit, 310 - first rack, 320 - first gear, 330 - first drive shaft , 340 - first nut, 350 - first knob, 400 - second drive unit, 410 - drive assembly, 411 - second rack, 412 - second gear, 413 - second drive shaft, 414 - second nut, 415 - second knob, 420 - roller, 430 - tensioning assembly, 431 - base, 432 - rotating shaft, 4321 - mounting hole, 4322 - socket, 433 - ratchet pair, 434 - elastic member, 500 - treatment unit, 510 - guide wire, 520 - balloon. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0019] The present invention provides a Eustachian tube endoscope, the structure of which is as follows: Figure 1 - Figure 5 As shown, it includes a handle body 100, an inspection unit 200, a first drive unit 300, a second drive unit 400 and a treatment unit 500, wherein the handle body 100 includes a sleeve 110; the inspection unit 200 includes a catheter 210 and a camera 220, wherein the catheter 210 slides through the sleeve 110, one end of the catheter 210 is a bendable structure, and the camera 220 is fixedly connected to one end of the catheter 210 for photographing the inside of the Eustachian tube; the first drive unit 300 and the catheter 210 are connected to each other. 0 is connected to the other end of the sleeve 110, and is used to drive the catheter 210 to reciprocate along the length direction of the sleeve 110; the second driving unit 400 is connected to the first driving unit 300 and is connected to one end of the catheter 210, and is used to drive the one end of the catheter 210 to bend alternately to both sides; the treatment unit 500 includes a guide wire 510 and a balloon 520, the guide wire 510 slides through the sleeve 110, and the balloon 520 is fixedly connected to one end of the guide wire 510, so as to treat the lesion in the Eustachian tube.

[0020] When in use, the physician holds the sleeve 110, inserts one end of the sleeve 110 into the nasal cavity, and controls the first driving unit 300 so that the first driving unit 300 can drive the catheter 210 to move inward along the length direction of the sleeve 110 until one end of the catheter 210 reaches the Eustachian tube, and drives the camera 220 to reach the Eustachian tube, and the camera 220 can be used to take pictures of the inside of the Eustachian tube. The catheter 210 transmits visual signals back to the back-end device. When it is necessary to adjust the shooting angle of the camera 220, the second driving unit 400 is controlled so that the second driving unit 400 can drive one end of the catheter 210 to bend alternately to both sides, so that the camera 220 bends alternately to both sides, and the shooting angle of the camera 220 is changed. The field of view provided by the camera 220 can clearly and accurately find the lesion, which is convenient for the physician to make a quick diagnosis of the disease. The doctor pushes the guide wire 510 to move inward along the length direction of the sleeve 110 until one end of the guide wire 510 reaches the Eustachian tube, and drives the balloon 520 to reach the Eustachian tube. The balloon 520 expands to reopen the blocked and inflamed parts of the Eustachian tube. Then the doctor pulls the guide wire 510 to move outward along the length direction of the sleeve 110 until one end of the guide wire 510 is withdrawn into the sleeve 110, and drives the balloon 520 to be withdrawn into the sleeve 110, so that the pus at the lesion can be discharged, thereby achieving the treatment effect on ETD. The Eustachian tube endoscope observes the situation in the Eustachian tube through the camera 220. The camera 220 can be bent alternately to both sides in a plane to change the shooting angle of the camera 220, so that it can have a larger observation range in the narrow nasal cavity, thereby avoiding the visual angle that cannot be photographed in the Eustachian tube, making the surgical operation more convenient.

[0021] As a preferred embodiment, please refer to Figure 2 The handle body 100 also includes an outer shell 120 and an inner shell 130, the outer shell 120 has a first cavity 121, one end of the sleeve 110 is fixedly connected to the outer shell 120 and communicated with the first cavity 121, the other end of the catheter 210 extends into the first cavity 121, the inner shell 130 is slidably disposed in the first cavity 121 and is fixedly connected to the other end of the catheter 210, the inner shell 130 has a second cavity 131, the first drive unit 300 is connected to the inner shell 130, and is used to drive the inner shell 130 to reciprocate along the length direction of the sleeve 110, the first cavity 121 is used to accommodate the first drive unit 300, and the second cavity 131 is used to accommodate the second drive unit 400.

[0022] As a preferred embodiment, please refer to Figure 4The handle body 100 also includes a slide rail 140 and a slider 150. The slide rail 140 is arranged in the first cavity 121 and is fixedly connected to the outer shell 120. The slide rail 140 extends along the length direction of the sleeve 110. The slider 150 is arranged in the first cavity 121 and is slidably connected to the slide rail 140. The slider 150 is also fixedly connected to the inner shell 130. The slider 150 cooperates with the slide rail 140 to guide the movement of the inner shell 130 and improve the stability of the movement of the inner shell 130.

[0023] As a preferred embodiment, please refer to Figure 2 and Figure 4The first driving unit 300 includes a first rack 310, a first gear 320, a first driving shaft 330, a first nut 340 and a first knob 350. The first rack 310 is disposed in the first cavity 121 and extends along the length direction of the sleeve 110. The first rack 310 is fixedly connected to the inner shell 130. The first gear 320 is disposed in the first cavity 121 and meshes with the first rack 310. One end of the first driving shaft 330 is disposed in the first cavity 121 and is coaxially fixedly connected to the first gear 320. The other end of the first driving shaft 330 is fixedly connected to the inner shell 130. One end rotates through the housing 120 and extends out of the housing 120. The other end of the first drive shaft 330 is provided with a first thread. The first nut 340 is provided outside the housing 120 and sleeved on the first drive shaft 330. The first nut 340 is threadedly connected with the first thread. The first nut 340 is used to press against or separate from the housing 120. The first knob 350 is provided outside the housing 120 and fixedly connected to the end of the first drive shaft 330. When the first nut 340 presses against the housing 120, the position of the first drive shaft 330 is locked. , the first drive shaft 330 cannot rotate relative to the housing 120. When the first nut 340 is separated from the housing 120, the first drive shaft 330 can rotate relative to the housing 120. The first knob 350 is held to rotate the first drive shaft 330 in a positive or reverse direction. The first drive shaft 330 drives the first gear 320 to rotate in a positive or reverse direction. According to the gear rack transmission principle, the first rack 310 reciprocates along the length direction of the sleeve 110 and drives the inner shell 130 to reciprocate along the length direction of the sleeve 110, so that the first gear 320 can rotate in a positive or reverse direction. The inner shell 130 approaches or moves away from the sleeve 110. When the inner shell 130 approaches the sleeve 110, it pushes the catheter 210 to move outward, so that one end of the catheter 210 moves out of the sleeve 110, and the camera 220 moves out of the sleeve 110. The camera 220 gradually moves away from the sleeve 110 until it reaches a preset position. When the inner shell 130 moves away from the sleeve 110, it pulls the catheter 210 to move inward, so that one end of the catheter 210 moves into the sleeve 110, and the camera 220 moves into the sleeve 110.

[0024] As a preferred embodiment, please refer to Figure 3 and Figure 5The second driving unit 400 includes two traction ropes and a driving assembly 410. The two traction ropes both pass through the sleeve 110 and are respectively arranged on both sides of the catheter 210. One end of the two traction ropes is fixedly connected to one end of the catheter 210. The driving assembly 410 is connected to the inner shell 130 and to the other ends of the two traction ropes, and is used to drive the two traction ropes to move synchronously and reversely along the length direction of the catheter 210, so that one end of the catheter 210 is alternately bent to both sides, changing the shooting angle of the camera 220, so that it can have a larger observation range in the narrow nasal cavity, thereby avoiding the existence of a visual angle that cannot be photographed in the Eustachian tube, making the surgical operation more convenient.

[0025] As a preferred embodiment, please refer to Figure 3 and Figure 5The driving assembly 410 includes two second racks 411, a second gear 412, a second driving shaft 413, a second nut 414 and a second knob 415. The two second racks 411 are both arranged in the second cavity 131 and extend along the length direction of the sleeve 110. The two second racks 411 are both slidably connected to the inner shell 130 and are also connected to the other ends of the two traction ropes in a one-to-one correspondence. The second gear 412 is arranged in the second cavity 131 and is located between the two second racks 4 11, the second gear 412 is meshed with the two second racks 411, one end of the second drive shaft 413 is disposed in the second cavity 131 and is coaxially fixed to the second gear 412, the other end of the second drive shaft 413 rotates through the inner shell 130 and the outer shell 120, and extends out of the outer shell 120, the other end of the second drive shaft 413 is provided with a second thread, and the second nut 414 is disposed outside the outer shell 120 and sleeved on the second drive shaft 413 The second nut 414 is screwed with the second thread, and the second nut 414 is used to press against or separate from the housing 120. The second knob 415 is arranged outside the housing 120 and is fixedly connected to the end of the second drive shaft 413. When the second nut 414 presses against the housing 120, the position of the second drive shaft 413 is locked, and the second drive shaft 413 cannot rotate relative to the housing 120. When the second nut 414 is separated from the housing 120, the second drive shaft 413 can rotate relative to the housing 120. The second knob 415 is held by hand to rotate the second drive shaft 413 forward or reversely, and the second drive shaft 413 will drive the second gear 412 to rotate forward or reversely. According to the gear rack meshing transmission principle, the two second racks 411 will synchronously reciprocate in the opposite direction along the length direction of the sleeve 110, and drive the two traction ropes to synchronously reciprocate in the opposite direction along the length direction of the sleeve 110, so that one end of the traction rope can be bent alternately to both sides.

[0026] As a preferred embodiment, please refer to Figure 3 and Figure 5 Two slide grooves 1311 are provided on the wall of the second cavity 131, and the two slide grooves 1311 extend along the length direction of the sleeve 110. The driving assembly 410 also includes a plurality of rollers 420, each of which is slidably disposed in the two slide grooves 1311 and is rotatably connected to the two second racks 411 via pins. The rollers 420 cooperate with the slide grooves 1311 to guide the movement of the second rack 411, thereby improving the stability of the movement of the second rack 411.

[0027] As a preferred embodiment, please refer to Figure 1 and Figure 2 The outer shell 120 is provided with a waist-shaped groove 122 connected to the first cavity 121, and the waist-shaped groove 122 extends along the length direction of the sleeve 110. The other end of the second drive shaft 413 slides through the waist-shaped groove 122 and extends out of the outer shell 120, so that the second drive shaft 413 can move along the length direction of the waist-shaped groove 122.

[0028] As a preferred embodiment, please refer to Figure 3 and Figure 5 The second driving unit 400 includes two tensioning assemblies 430, and the two tensioning assemblies 430 are both arranged in the second cavity 131, and are connected one-to-one with the two second racks 411, and are also connected one-to-one with the other ends of the two traction ropes, for tensioning the traction ropes to prevent the traction ropes from being too loose, thereby ensuring the traction effect of the traction ropes on one end of the catheter 210.

[0029] As a preferred embodiment, please refer to Figure 5 The tensioning assembly 430 includes a base 431, a rotating shaft 432, a ratchet pair 433 and an elastic member 434. The base 431 is fixedly connected to the second rack 411. One end of the rotating shaft 432 is rotatably connected to the base 431. The other end of the rotating shaft 432 is connected to the other end of the traction rope. The first ratchet of the ratchet pair 433 is rotatably sleeved on the rotating shaft 432 and close to the base 431. The second ratchet of the ratchet pair 433 is fixedly sleeved on the rotating shaft 432 and away from the base 431. The close surfaces of the first ratchet and the second ratchet are meshed with each other. The second ratchet can only rotate in the forward direction relative to the first ratchet, and the traction rope can be tensioned. The elastic member 434 is arranged between the base 431 and the first ratchet, and is sleeved on the rotating shaft 432. The two ends of the elastic member 434 are respectively fixed to the base 431 and the first ratchet. When the traction rope needs to be tensioned, the rotating shaft 432 is rotated in the forward direction to make the traction rope wound around the rotating shaft 432. Since the second ratchet can only rotate in the forward direction relative to the first ratchet, the rotating shaft 432 cannot rotate in the reverse direction, so that the traction rope can be kept in a tensioned state.

[0030] As a preferred embodiment, please refer to Figure 5 The other end of the rotating shaft 432 is provided with a mounting hole 4321. The other end of the traction rope passes through the chuck, then passes through the mounting hole 4321, and then passes through the chuck and is pressed by the chuck. By rotating the rotating shaft 432, the traction rope can be wound around the rotating shaft 432.

[0031] As a preferred embodiment, please refer to Figure 1 and Figure 2 The inner shell 130 is provided with two openings 132 both connected to the second cavity 131, and the outer shell 120 is provided with two openings 123 both connected to the first cavity 121, and the two openings 123 correspond to the two openings 132 one by one. During the reciprocating movement of the two tensioning components 430 along the length direction of the sleeve 110, they can be aligned with the corresponding openings 132 and the openings 123 respectively. When the traction rope needs to be tensioned, the two tensioning components 430 are aligned with the corresponding openings 132 and the openings 123 respectively, and the hand can be extended into the second cavity 131 along the openings 123 and the openings 132, and the rotating shaft 432 is rotated in the forward direction to tension the traction rope.

[0032] As a preferred embodiment, please refer to Figure 5 A plug hole 4322 is provided on the end surface of the other end of the rotating shaft 432 , and a tool is extended into the second cavity 131 along the opening 123 and the opening 132 , and the end of the tool is inserted into the plug hole 4322 , and the rotating shaft 432 is rotated.

[0033] As a preferred embodiment, the elastic member 434 is a spring, and the first ratchet wheel and the base 431 can be fixedly connected via the spring, and have a certain rotation margin.

[0034] As a preferred embodiment, please refer to Figure 2 and Figure 4 The outer shell 120 is provided with two through holes 124, the two through holes 124 are coaxially arranged and are both connected to the first cavity 121, one end of the sleeve 110 is connected to one of the through holes 124, and the inner shell 130 is provided with two channels 133, both of which extend along the length direction of the sleeve 110. The guide wire 510 slides through one of the through holes 124, one of the channels 133, the other through hole 124 and the sleeve 110 in sequence, so as to guide the guide wire 510.

[0035] As a preferred embodiment, the Eustachian tube endoscope further includes a lighting unit, and the lighting unit is used to illuminate the camera 220 so that the camera 220 can take pictures of the inside of the Eustachian tube, thereby improving the shooting effect.

[0036] As a preferred embodiment, the lighting unit includes an optical fiber and a cold light source. The optical fiber slides through one of the through holes 124, another of the channels 133, another of the through holes 124 and the sleeve 110 in sequence. The cold light source is arranged outside the housing 120 and is electrically connected to the optical fiber. The front end of the camera 220 is a fine aperture and the spatial position is very small. The use of a micro-chip LED will make the heat dissipation problem difficult to solve, and the power of the light source is relatively small, so that the overall lighting brightness is limited. Considering the overall volume, weight, practicality, safety and other factors of the device, suitable cold light sources and optical fibers are selected to ensure the performance requirements of the lighting system. The cold light source is externally placed to complete the adjustment of parameters such as light intensity and color temperature, and the optical fiber is used to introduce light into the target field of view for illumination.

[0037] In order to better understand the present invention, the following Figure 1 - Figure 5 The working principle of the technical solution of the present invention is described in detail: When in use, the physician holds the handle body 100, inserts one end of the sleeve 110 into the nasal cavity, separates the first nut 340 from the shell 120, and the first drive shaft 330 can rotate relative to the shell 120. The physician holds the first knob 350 to make the first drive shaft 330 rotate in the positive direction. The first drive shaft 330 drives the first gear 320 to rotate in the positive direction. The first rack 310 reciprocates along the length direction of the sleeve 110 and drives the inner shell 130 to reciprocate along the length direction of the sleeve 110, so that the inner shell 130 approaches the sleeve 110. When the inner shell 130 approaches the sleeve 110, it pushes the The catheter 210 moves into the Eustachian tube until one end of the catheter 210 reaches the Eustachian tube, and drives the camera 220 to reach the Eustachian tube. The camera 220 can be used to shoot the inside of the Eustachian tube. The catheter 210 transmits visual signals back to the back-end device. When it is necessary to adjust the shooting angle of the camera 220, the second nut 414 is separated from the housing 120, and the second drive shaft 413 can rotate relative to the housing 120. The second knob 415 is held to rotate the second drive shaft 413 forward or reversely. The second drive shaft 413 drives the second gear 412 to rotate forward or reversely. According to the gear rack meshing transmission principle, the two The second rack 411 will synchronously reciprocate in the opposite direction along the length direction of the sleeve 110, and drive the two traction ropes to synchronously reciprocate in the opposite direction along the length direction of the sleeve 110, so that one end of the traction rope can be bent alternately to both sides, so that the camera 220 can be bent alternately to both sides, and the shooting angle of the camera 220 can be changed. The field of view provided by the camera 220 can clearly and accurately find the lesion, which is convenient for the doctor to quickly make a judgment on the disease. The doctor pushes the guide wire 510 to move inward along the length direction of the sleeve 110 until one end of the guide wire 510 reaches the Eustachian tube, and drives the balloon 520 to reach the Eustachian tube, and the expansion of the balloon 520 makes the pharynx expand. The blocked and inflamed parts of the tympanic tube are reopened, and then the doctor pulls the guide wire 510 outward along the length direction of the sleeve 110 until one end of the guide wire 510 is withdrawn into the sleeve 110, and drives the balloon 520 to withdraw into the sleeve 110, so that the pus in the lesion can be discharged, thereby achieving the treatment effect on ETD. The Eustachian tube endoscope observes the situation in the Eustachian tube through the camera 220. The camera 220 can bend alternately to both sides in a plane, changing the shooting angle of the camera 220, so that it can have a larger observation range in the narrow nasal cavity, thereby avoiding the visual angle that cannot be photographed in the Eustachian tube, making the surgical operation more convenient.

[0038] The Eustachian tube endoscope provided by the present invention has the following beneficial effects: (1) This Eustachian tube endoscope can simultaneously inspect and treat the Eustachian tube, thereby alleviating the patient's pain; (2) When the traction rope needs to be tensioned, the two tensioning components 430 are aligned with the corresponding openings 132 and the openings 123, respectively, and a hand can be inserted into the second cavity 131 along the openings 123 and the openings 132 to rotate the rotating shaft 432 in the positive direction, thereby tensioning the traction rope to prevent the traction rope from being too loose, thereby ensuring the traction effect of the traction rope on one end of the catheter 210; (3) The Eustachian tube endoscope observes the situation inside the Eustachian tube through the camera 220. The camera 220 can be bent alternately to both sides in a plane to change the shooting angle of the camera 220, so that it can have a larger observation range in the narrow nasal cavity, thereby avoiding the visual angle that cannot be photographed in the Eustachian tube, making the surgical operation more convenient.

[0039] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A Eustachian tube endoscope, characterized in that: include: A handle body including a sleeve; An inspection unit, comprising a catheter and a camera, wherein the catheter slides through the sleeve, one end of the catheter is a bendable structure, and the camera is fixedly connected to one end of the catheter for photographing the inside of the Eustachian tube; A first driving unit, connected to the other end of the catheter, and used to drive the catheter to reciprocate along the length direction of the sleeve; A second driving unit, connected to the first driving unit and to one end of the catheter, and used to drive the one end of the catheter to bend alternately to both sides; The treatment unit comprises a guide wire and a balloon. The guide wire slides through the sleeve, and the balloon is fixedly connected to one end of the guide wire to treat the lesion in the Eustachian tube.

2. The Eustachian tube endoscope according to claim 1, characterized in that: The handle body also includes an outer shell and an inner shell, the outer shell has a first cavity, one end of the sleeve is fixedly connected to the outer shell and communicates with the first cavity, the other end of the catheter extends into the first cavity, the inner shell is slidably disposed in the first cavity and is fixedly connected to the other end of the catheter, the inner shell has a second cavity, and the first driving unit is connected to the inner shell for driving the inner shell to reciprocate along the length direction of the sleeve.

3. The Eustachian tube endoscope according to claim 2, characterized in that: The first driving unit includes a first rack, a first gear, a first driving shaft, a first nut and a first knob. The first rack is arranged in the first cavity and extends along the length direction of the sleeve. The first rack is fixedly connected to the inner shell. The first gear is arranged in the first cavity and meshes with the first rack. One end of the first driving shaft is arranged in the first cavity and coaxially fixedly connected to the first gear. The other end of the first driving shaft rotates through the outer shell and extends out of the outer shell. A first thread is arranged on the other end of the first driving shaft. The first nut is arranged outside the outer shell and sleeved on the first driving shaft. The first nut is threadedly connected to the first thread. The first nut is used to press against or separate from the outer shell. The first knob is arranged outside the outer shell and fixedly connected to the end of the first driving shaft.

4. The Eustachian tube endoscope according to claim 2, characterized in that: The second driving unit includes two traction ropes and a driving assembly. The two traction ropes both pass through the sleeve and are respectively arranged on both sides of the catheter. One end of the two traction ropes is fixedly connected to one end of the catheter. The driving assembly is connected to the inner shell and to the other ends of the two traction ropes, and is used to drive the two traction ropes to move synchronously and reversely along the length direction of the catheter so that one end of the catheter bends alternately to both sides.

5. The Eustachian tube endoscope according to claim 4, characterized in that: The driving assembly includes two second racks, a second gear, a second driving shaft, a second nut and a second knob. The two second racks are both arranged in the second cavity and extend along the length direction of the sleeve. The two second racks are both slidably connected to the inner shell and are also connected to the other ends of the two traction ropes in a one-to-one manner. The second gear is arranged in the second cavity and is located between the two second racks. The second gear is meshed with the two second racks. One end of the second driving shaft is arranged in the second cavity and is coaxially fixed with the second gear. The other end of the second driving shaft rotates through the inner shell and the outer shell and extends out of the outer shell. A second thread is arranged on the other end of the second driving shaft. The second nut is arranged outside the outer shell and sleeved on the second driving shaft. The second nut is threadedly connected to the second thread. The second nut is used to press against or separate from the outer shell. The second knob is arranged outside the outer shell and is fixed to the end of the second driving shaft.

6. The Eustachian tube endoscope according to claim 5, characterized in that: The second driving unit includes two tensioning assemblies, and the two tensioning assemblies are both arranged in the second cavity and connected to the two second racks in a one-to-one correspondence, and are also connected to the other ends of the two traction ropes in a one-to-one correspondence, for tensioning the traction ropes.

7. The Eustachian tube endoscope according to claim 6, characterized in that: The tensioning assembly includes a base, a rotating shaft, a ratchet pair and an elastic member, the base is fixedly connected to the second rack, one end of the rotating shaft is rotatably connected to the base, and the other end of the rotating shaft is connected to the other end of the traction rope, the first ratchet of the ratchet pair is rotatably sleeved on the rotating shaft and close to the base, the second ratchet of the ratchet pair is fixedly sleeved on the rotating shaft and away from the base, the approaching surfaces of the first ratchet and the second ratchet are meshed with each other, so that the second ratchet can only rotate in the positive direction relative to the first ratchet and tension the traction rope, the elastic member is arranged between the base and the first ratchet and sleeved on the rotating shaft, and the two ends of the elastic member are respectively fixedly connected to the base and the first ratchet.

8. The Eustachian tube endoscope according to claim 2, characterized in that: The outer shell is provided with two through holes, the two through holes are coaxially arranged and are both connected to the first cavity, one end of the sleeve is connected to one of the through holes, the inner shell is provided with two channels, the two channels extend along the length direction of the sleeve, and the guide wire slides through one of the through holes, one of the channels, the other through hole and the sleeve in sequence.

9. The Eustachian tube endoscope according to claim 8, characterized in that: It also includes a lighting unit, which is used to illuminate the camera.

10. The Eustachian tube endoscope according to claim 9, characterized in that: The lighting unit includes an optical fiber and a cold light source. The optical fiber slides through one of the through holes, another of the channels, another of the through holes and the sleeve in sequence. The cold light source is arranged outside the housing and is electrically connected to the optical fiber.

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