Manual push-pull type eustachian tube endoscope

Abstract

The invention discloses a manual push-pull type Eustachian tube endoscope which comprises a handle body, an inspection unit, a first driving unit and a second driving unit, and the handle body comprises a sleeve; the examination unit comprises a catheter, a push-pull tube and a camera, the catheter penetrates through the sleeve in a sliding mode, one end of the push-pull tube extends into the catheter from the other end of the catheter in a sliding mode, one end of the push-pull tube is fixedly connected with one end of the catheter, one end of the catheter and one end of the push-pull tube are each of a bendable structure, and the camera is arranged in the catheter. The camera is fixedly connected with one end of the conduit; and the first driving unit is connected with the other end of the guide pipe. The device has the advantages that the push-pull pipe is adopted to replace a steel wire rope to push and pull the guide pipe, one end of the guide pipe is bent towards the two sides alternately, the structure of the push-pull pipe is more stable, the operation precision of the whole device can be guaranteed, and in addition, the structure manufacturing cost of the push-pull pipe is low.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, and in particular to a manual push-pull 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 effectively detect and treat Eustachian tube-related diseases.

[0003] When the existing Eustachian tube inspection device (such as an endoscope and its manual endoscope handle, and an endoscope operation method disclosed in application No. 202210730994.7) inspects the patient's Eustachian tube, the imaging probe and the imaging catheter enter the patient's Eustachian tube to obtain visual images inside the patient's Eustachian tube. The doctor uses a balloon guidewire to perform surgery in the patient's body. Pulling the wire rope can make the front end of the imaging catheter bend alternately to both sides, so that the imaging probe swings alternately to both sides to expand the shooting range of the imaging probe. However, long-term pulling of the wire rope can easily cause the wire rope to loosen, resulting in reduced operating accuracy of the entire device. In addition, the manufacturing cost of this structure is also relatively high. Summary of the invention

[0004] The purpose of the present invention is to overcome the above technical deficiencies and propose a manual push-pull Eustachian tube endoscope to solve the technical problems in the prior art that long-term pulling of the wire rope can easily cause the wire rope to loosen, resulting in reduced operating accuracy of the entire device, and the manufacturing cost of this structure is also high.

[0005] In order to achieve the above technical objectives, the technical solution of the present invention provides a manual push-pull Eustachian tube endoscope, comprising: A handle body including a sleeve; An inspection unit, comprising a catheter, a push-pull tube and a camera, wherein the catheter slides through the sleeve, one end of the push-pull tube slides into the catheter from the other end of the catheter, one end of the push-pull tube is fixedly connected to one end of the catheter, one end of the catheter and one end of the push-pull tube are both bendable structures, and the camera is fixedly connected to one end of the catheter; 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; The second driving unit is connected to the other end of the push-pull tube and is used to drive the push-pull tube to move back and forth along the length direction of the conduit, so that one end of the conduit is bent alternately to both sides.

[0006] 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 inner shell is slidably disposed in the first cavity, and has a second cavity, the other end of the conduit extends into the first cavity, the other end of the conduit is fixedly connected to the inner shell and communicated with the second cavity, the other end of the push-pull tube extends into the 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.

[0007] Furthermore, a plurality of first breaks are opened on one end of the conduit, and each of the first breaks is opened on the same side of the conduit at intervals along the length direction of the conduit; a plurality of second breaks are opened on one end of the push-pull tube, and each of the second breaks is opened on the same side of the push-pull tube at intervals along the length direction of the push-pull tube, and each of the second breaks is arranged opposite to each of the first breaks.

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

[0009] Furthermore, the outer shell is provided with a first through slot connected to the first cavity, and the first through slot extends along the length direction of the sleeve; the inner shell is provided with a second through slot connected to the second cavity, and the second through slot extends along the length direction of the sleeve and corresponds to the first through slot; the second driving unit includes a moving seat, a push rod and a locking rod; the moving seat is slidably arranged in the second cavity and can reciprocate along the length direction of the sleeve; the moving seat is fixedly connected to the other end of the push-pull tube, one end of the push rod is fixedly connected to the moving seat, and the other end of the push rod slides through the second through slot and the first through slot and extends out of the outer shell; one end of the locking rod is detachably connected to the moving seat and the inner shell to lock the position of the moving seat, and the other end of the locking rod slides through the second through slot and the first through slot and extends out of the outer shell.

[0010] Furthermore, the handle body also includes a guide rod, which is arranged in the second cavity and extends along the length direction of the sleeve. Both ends of the guide rod are fixedly connected to the inner shell, and the movable seat is slidably sleeved on the guide rod.

[0011] Furthermore, a screw hole is provided on the movable seat, and a second thread is provided on one end of the locking rod. One end of the locking rod passes through the screw hole and is threadedly connected to the second thread. By rotating the locking rod, the end face of the locking rod can be pressed against or separated from the guide rod.

[0012] Furthermore, the manual push-pull Eustachian tube endoscope also includes a treatment unit, which includes a guide wire and a balloon. The guide wire slides through the sleeve, the outer shell and the inner shell, and the balloon is fixedly connected to one end of the guide wire to treat the lesion in the Eustachian tube.

[0013] Furthermore, the outer shell is provided with two first through holes, the two first through holes are coaxially arranged and are both connected to the first cavity, one end of the sleeve is connected to one of the first through holes, and the inner shell is provided with two second through holes, the two second through holes are coaxially arranged with the two first through holes, and are both connected to the second cavity, the sleeve, the two first through holes and the two second through holes form a guide channel, and the guide wire slides through the guide channel.

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

[0015] Compared with the prior art, the beneficial effects of the present invention include: when it is necessary to adjust the shooting angle of the camera, by controlling the second driving unit, the second driving unit can drive the push-pull tube to move back and forth along the length direction of the catheter. Since one end of the push-pull tube is fixedly connected to one end of the catheter, and one end of the catheter and one end of the push-pull tube are both bendable structures, one end of the catheter is bent alternately to both sides, and one end of the push-pull tube is bent alternately to both sides, so that the camera is swung alternately to both sides. In this manual push-pull Eustachian tube endoscope, the camera can swing alternately to both sides in a plane, and the shooting angle of the camera is changed, 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. A push-pull tube is used instead of a wire rope push-pull catheter, so that one end of the catheter is bent alternately to both sides. The structure of the push-pull tube is more stable, which can ensure the operating accuracy of the entire device. In addition, the structural manufacturing cost of the push-pull tube is also low. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a three-dimensional structural schematic diagram of a manual push-pull Eustachian tube endoscope provided by the present invention; Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of a manual push-pull Eustachian tube endoscope with half of the shell omitted; Figure 3 yes Figure 2 A schematic diagram of the three-dimensional structure of a manual push-pull Eustachian tube endoscope after omitting the sleeve and half of the inner shell; Figure 4 yes Figure 3 A schematic diagram of the stereoscopic structure of a manual push-pull Eustachian tube endoscope in another viewing angle; Figure 5 yes Figure 4 A schematic diagram of the three-dimensional structure of the inspection unit; Figure 6 yes Figure 5 Exploded view of the inspection unit in; In the figure: 100 - handle body, 110 - sleeve, 120 - outer shell, 121 - first cavity, 122 - first through groove, 123 - first through hole, 130 - inner shell, 131 - second cavity, 132 - second through groove, 133 - second through hole, 140 - slide rail, 150 - slider, 160 - guide rod, 200 - inspection unit, 210 - catheter, 211 - first fracture, 220 - push-pull tube, 221 - second fracture, 230 - camera, 300 - first driving unit, 310 - rack, 320 - gear, 330 - driving shaft, 340 - nut, 350 - knob, 400 - second driving unit, 410 - moving seat, 420 - push rod, 430 - locking rod, 500 - treatment unit, 510 - guide wire, 520 - balloon. DETAILED DESCRIPTION

[0017] 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.

[0018] The present invention provides a manual push-pull Eustachian tube endoscope, the structure of which is as follows: Figure 1 - Figure 6As shown, it includes a handle body 100, an inspection unit 200, a first drive unit 300 and a second drive unit 400, wherein the handle body 100 includes a sleeve 110; the inspection unit 200 includes a catheter 210, a push-pull tube 220 and a camera 230, wherein the catheter 210 slides through the sleeve 110, one end of the push-pull tube 220 slides into the catheter 210 from the other end of the catheter 210, one end of the push-pull tube 220 is fixedly connected to one end of the catheter 210, and one end of the catheter 210 is fixedly connected to one end of the catheter 210. The first driving unit 300 is connected to the other end of the catheter 210, and is used to drive the catheter 210 to move back and forth along the length direction of the sleeve 110; the second driving unit 400 is connected to the other end of the push-pull tube 220, and is used to drive the push-pull tube 220 to move back and forth along the length direction of the catheter 210, so that one end of the catheter 210 bends alternately to both sides.

[0019] 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 push-pull tube 220 and the camera 230 to reach the Eustachian tube, and the Eustachian tube can be photographed through the camera 230. When it is necessary to adjust the shooting angle of the camera 230, the second driving unit 400 is controlled so that the second driving unit 400 can drive the push-pull tube 220 to move back and forth along the length direction of the catheter 210. Since one end of the push-pull tube 220 is fixedly connected to one end of the catheter 210, and one end of the catheter 210 and one end of the push-pull tube 220 are both bendable structures, the catheter 210 can be moved back and forth. 0 is alternately bent to both sides, and one end of the push-pull tube 220 is alternately bent to both sides, so that the camera 230 is alternately swung to both sides, and the shooting angle of the camera 230 is changed. The lesion can be found clearly and accurately through the field of view provided by the camera 230, which is convenient for doctors to quickly make judgments on the symptoms. In the manual push-pull Eustachian tube endoscope, the camera 230 can be alternately swung to both sides in a plane, and the shooting angle of the camera 230 is changed, 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. The push-pull tube 220 is used to replace the wire rope to push and pull the catheter 210, so that one end of the catheter 210 is alternately bent to both sides. The structure of the push-pull tube 220 is more stable, which can ensure the operation accuracy of the entire device. In addition, the structural manufacturing cost of the push-pull tube 220 is also low.

[0020] As a preferred embodiment, please refer to Figure 2 and Figure 3 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 communicates with the first cavity 121, the inner shell 130 is slidably arranged in the first cavity 121, and has a second cavity 131, the other end of the guide tube 210 extends into the first cavity 121, the other end of the guide tube 210 is fixedly connected to the inner shell 130 and communicates with the second cavity 131, the other end of the push-pull tube 220 extends into the 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.

[0021] As a preferred embodiment, please refer to Figure 4 The 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.

[0022] As a preferred embodiment, please refer to Figure 5 and Figure 6A plurality of first breaks 211 are provided on one end of the conduit 210, and each of the first breaks 211 is provided at the same side of the conduit 210 at intervals along the length direction of the conduit 210; a plurality of second breaks 221 are provided on one end of the push-pull tube 220, and each of the second breaks 221 is provided at the same side of the push-pull tube 220 at intervals along the length direction of the push-pull tube 220, and each of the second breaks 221 is arranged opposite to each of the first breaks 211, forming a lever arm between the trunks, so that one end of the conduit 210 can be bent toward the break side, and one end of the push-pull tube 220 can be bent toward the break side. When the push-pull tube 220 moves forward along the length direction of the conduit 210, the connection side of one end of the conduit 210 is extended, and the connection side of one end of the push-pull tube 220 is shortened, generating a torque at one end of the conduit 210 and the push-pull tube 220, so that the conduit 210 and the push-pull tube 220 can be bent at the same time. Among them, one end of the catheter 210 is bent toward the fracture side, and one end of the push-pull tube 220 is bent toward the connection side. When the push-pull tube 220 moves backward along the length direction of the catheter 210, the connection side of one end of the catheter 210 is shortened, and the connection side of one end of the push-pull tube 220 is elongated, generating a torque at one end of the catheter 210 and the push-pull tube 220, so that the catheter 210 and the push-pull tube 220 can be bent at the same time, wherein one end of the catheter 210 is bent toward the connection side, and one end of the push-pull tube 220 is bent toward the fracture side, thereby realizing that one end of the push-pull tube 220 and one end of the catheter 210 are alternately bent to both sides, the catheter 210 and the push-pull tube 220 use traditional nickel-titanium tubes, so that the catheter 210 and the push-pull tube 220 have smaller diameters, and the catheter 210 and the push-pull tube 220 can also use disposable materials, thereby ensuring the sterility of the equipment and reducing the manufacturing cost, and the manufacturing process is simpler and more convenient.

[0023] As a preferred embodiment, please refer to Figure 3 and Figure 4The first driving unit 300 includes a rack 310, a gear 320, a driving shaft 330, a nut 340 and a knob 350. The rack 310 is disposed in the first cavity 121 and extends along the length direction of the sleeve 110. The rack 310 is fixedly connected to the inner shell 130. The gear 320 is disposed in the first cavity 121 and meshes with the rack 310. One end of the driving shaft 330 is disposed in the first cavity 121 and is coaxially fixedly connected to the gear 320. The other end of the driving shaft 330 rotates through the outer shell 1 20, and extends out of the housing 120, the other end of the drive shaft 330 is provided with a first thread, the nut 340 is provided outside the housing 120, and is sleeved on the drive shaft 330, the nut 340 is threadedly connected with the first thread, the nut 340 is used to press against or separate from the housing 120, the knob 350 is provided outside the housing 120, and is fixedly connected to the end of the drive shaft 330, when the nut 340 presses against the housing 120, the position of the drive shaft 330 is locked, and the drive shaft 330 cannot be relative to the The outer shell 120 rotates, and when the nut 340 is separated from the outer shell 120, the drive shaft 330 can rotate relative to the outer shell 120. The knob 350 is held by hand to rotate the drive shaft 330 in a forward or reverse direction. The drive shaft 330 drives the gear 320 to rotate in a forward or reverse direction. According to the transmission principle of the gear 320 and the rack 310 meshing, the 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 or moves away from the inner shell 130. The inner shell 130 is close to the sleeve 110, and the catheter 210 is pushed to move outward when the inner shell 130 approaches the sleeve 110, so that one end of the catheter 210 moves out of the sleeve 110, and the camera 230 moves out of the sleeve 110, and the camera 230 gradually moves away from the sleeve 110 until it reaches a preset position. The inner shell 130 is pulled away from the sleeve 110, and the catheter 210 is moved inward when the inner shell 130 moves away from the sleeve 110, so that one end of the catheter 210 moves into the sleeve 110, and the camera 230 moves into the sleeve 110.

[0024] As a preferred embodiment, please refer to Figure 1 and Figure 2The outer shell 120 is provided with a first through slot 122 communicating with the first cavity 121, and the first through slot 122 extends along the length direction of the sleeve 110. The inner shell 130 is provided with a second through slot 132 communicating with the second cavity 131, and the second through slot 132 extends along the length direction of the sleeve 110 and corresponds to the first through slot 122. The second driving unit 400 includes a moving seat 410, a push rod 420 and a locking rod 430. The moving seat 410 is slidably disposed in the second cavity 131 and can reciprocate along the length direction of the sleeve 110. The moving seat 410 is fixedly connected to the other end of the push-pull tube 220, and one end of the push rod 420 is fixedly connected to the moving seat 410. The other end of the push rod 420 slides through the second through slot 132 and the first through slot 122 and extends out of the outer shell 120. One end of the locking rod 430 is fixedly connected to the push-pull tube 220. The movable seat 410 and the inner shell 130 are detachably connected to lock the position of the movable seat 410. The other end of the locking rod 430 slides through the second through slot 132 and the first through slot 122 and extends out of the outer shell 120. The other end of the push rod 420 is held by hand, and the movable seat 410 is pushed and pulled by the push rod 420, so that the movable seat 410 reciprocates along the length direction of the sleeve 110, and drives the push-pull tube 220 to reciprocate along the length direction of the catheter 210. Since one end of the push-pull tube 220 is fixedly connected to one end of the catheter 210, and one end of the catheter 210 and one end of the push-pull tube 220 have a fracture structure, one end of the catheter 210 is alternately bent to both sides, and one end of the push-pull tube 220 is alternately bent to both sides, so that the camera 230 is alternately swung to both sides, thereby changing the shooting angle of the camera 230.

[0025] As a preferred embodiment, please refer to Figure 3 The handle body 100 also includes a guide rod 160, which is disposed in the second cavity 131 and extends along the length direction of the sleeve 110. Both ends of the guide rod 160 are fixedly connected to the inner shell 130. The movable seat 410 is slidably sleeved on the guide rod 160. The guide rod 160 can guide the movement of the movable seat 410, so that the movement of the movable seat 410 is more stable.

[0026] As a preferred embodiment, please refer to Figure 3 and Figure 4A screw hole is provided on the movable seat 410, and a second thread is provided on one end of the locking rod 430. One end of the locking rod 430 passes through the screw hole and is threadedly connected with the second thread. By rotating the locking rod 430, the end face of the locking rod 430 can be pressed against or separated from the guide rod 160. When the end face of the locking rod 430 is pressed against the guide rod 160, the movable seat 410 is in a locked state, and the push-pull tube 220 is in a locked state. When the end face of the locking rod 430 is separated from the guide rod 160, the movable seat 410 is in an unlocked state, and the push-pull tube 220 is in an unlocked state.

[0027] As a preferred embodiment, please refer to Figure 2 and Figure 3 The manual push-pull Eustachian tube endoscope further includes a treatment unit 500, which includes a guide wire 510 and a balloon 520. The guide wire 510 slides through the sleeve 110, the outer shell 120 and the inner shell 130. The balloon 520 is fixedly connected to one end of the guide wire 510 to treat the lesion in the Eustachian tube. The lesion can be clearly and accurately found through the field of view provided by the camera 230, which is convenient for the doctor to quickly make a judgment on the disease. The doctor pushes the guide wire 510 to slide through the sleeve 110, the outer shell 120 and the inner shell 130. 0, and push 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 blocked and inflamed parts in the Eustachian tube are reopened by the expansion of the balloon 520. 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 withdraw into the sleeve 110, so that the pus in the lesion can be discharged, thereby achieving the treatment effect on ETD.

[0028] As a preferred embodiment, please refer to Figure 2 and Figure 3 The outer shell 120 is provided with two first through holes 123, the two first through holes 123 are coaxially arranged and are both connected to the first cavity 121, one end of the sleeve 110 is connected to one of the first through holes 123, and the inner shell 130 is provided with two second through holes 133, the two second through holes 133 are coaxially arranged with the two first through holes 123, and are both connected to the second cavity 131, the sleeve 110, the two first through holes 123 and the two second through holes 133 form a guide channel, the guide wire 510 slides through the guide channel, and the guide channel can guide the guide wire 510.

[0029] As a preferred embodiment, the manual push-pull Eustachian tube endoscope further includes a lighting unit, and the lighting unit is used to illuminate the camera 230 so that the camera 230 can take pictures of the inside of the Eustachian tube, thereby improving the shooting effect.

[0030] As a preferred embodiment, the lighting unit includes an optical fiber and a cold light source, the optical fiber runs through the guide channel, the cold light source is arranged outside the housing 120 and is electrically connected to the optical fiber, the front end of the camera 230 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, and 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.

[0031] In order to better understand the present invention, the following Figure 1 - Figure 6 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 nut 340 from the shell 120, and the drive shaft 330 can rotate relative to the shell 120. The physician holds the knob 350 to rotate the drive shaft 330 in the forward direction, and the drive shaft 330 drives the gear 320 to rotate in the forward direction. According to the transmission principle of the gear 320 and the rack 310 meshing, the 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 catheter 21 0 moves into the Eustachian tube until one end of the catheter 210 reaches the Eustachian tube and drives the camera 230 to reach the Eustachian tube. The camera 230 can be used to shoot the inside of the Eustachian tube. The catheter 210 transmits the visual signal back to the back-end device. When it is necessary to adjust the shooting angle of the camera 230, the locking rod 430 is rotated to separate the end surface of the locking rod 430 from the guide rod 160. The movable seat 410 is in an unlocked state, and the push-pull tube 220 is in an unlocked state. The other end of the push rod 420 is held by hand, and the movable seat 410 is pushed and pulled by the push rod 420, so that the movable seat 410 reciprocates along the length direction of the sleeve 110 and drives the push-pull tube 2 20 reciprocates along the length direction of the catheter 210. Since one end of the push-pull tube 220 is fixedly connected to one end of the catheter 210, and the one end of the catheter 210 and the one end of the push-pull tube 220 have a fracture structure, one end of the catheter 210 is alternately bent to both sides, and one end of the push-pull tube 220 is alternately bent to both sides, so that the camera 230 is alternately swung to both sides, changing the shooting angle of the camera 230. The field of view provided by the camera 230 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 slide through the sleeve 110, the outer shell 120 and the inner shell 130, and pushes the guide wire 510 to slide through the sleeve 110, the outer shell 120 and the inner shell 130, and pushes the guide wire 5 10 moves 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 blocked and inflamed parts in the Eustachian tube are reopened by the expansion of the balloon 520, and 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 withdraw into the sleeve 110, so that the pus at the lesion can be discharged, thereby achieving the treatment effect on ETD, and 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 drive the balloon 520 back into the sleeve 110, so that the pus in the lesion can be discharged, achieving the treatment effect of ETD. In this manual push-pug Eustachian tube endoscope, the camera 230 can swing alternately to both sides in a plane, changing the shooting angle of the camera 230, 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. The push-pull tube 220 is used to replace the steel wire rope to push and pull the catheter 210, so that one end of the catheter 210 is alternately bent to both sides. The structure of the push-pull tube 220 is more stable, which can ensure the operation accuracy of the entire device. In addition, the structural manufacturing cost of the push-pull tube 220 is also low.

[0032] The manual push-pull 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) In the manual push-pull Eustachian tube endoscope, the camera 230 can alternately swing to both sides in a plane, changing the shooting angle of the camera 230, 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; (3) The push-pull tube 220 is used to replace the steel wire rope to push and pull the catheter 210, so that one end of the catheter 210 is bent alternately to both sides. The structure of the push-pull tube 220 is more stable, which can ensure the operation accuracy of the entire device. In addition, the structural manufacturing cost of the push-pull tube 220 is also low. The catheter 210 and the push-pull tube 220 use traditional nickel-titanium tubes, so that the catheter 210 and the push-pull tube 220 have smaller diameters. The catheter 210 and the push-pull tube 220 can also use disposable materials, thereby ensuring the sterility of the equipment and reducing the manufacturing cost, and the manufacturing process is simpler and more convenient.

[0033] 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 manual push-pull Eustachian tube endoscope, characterized in that: include: A handle body including a sleeve; An inspection unit, comprising a catheter, a push-pull tube and a camera, wherein the catheter slides through the sleeve, one end of the push-pull tube slides into the catheter from the other end of the catheter, one end of the push-pull tube is fixedly connected to one end of the catheter, one end of the catheter and one end of the push-pull tube are both bendable structures, and the camera is fixedly connected to one end of the catheter; A first driving unit, connected to the other end of the catheter, for driving the catheter to reciprocate along the length direction of the sleeve; The second driving unit is connected to the other end of the push-pull tube and is used to drive the push-pull tube to move back and forth along the length direction of the conduit, so that one end of the conduit is bent alternately to both sides.

2. The manual push-pull 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 communicated with the first cavity, the inner shell is slidably disposed in the first cavity, and has a second cavity, the other end of the conduit extends into the first cavity, the other end of the conduit is fixedly connected to the inner shell and communicated with the second cavity, the other end of the push-pull tube extends into the 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 manual push-pull Eustachian tube endoscope according to claim 1, characterized in that: A plurality of first breaks are opened on one end of the conduit, and each of the first breaks is opened on the same side of the conduit at intervals along the length direction of the conduit; a plurality of second breaks are opened on one end of the push-pull tube, and each of the second breaks is opened on the same side of the push-pull tube at intervals along the length direction of the push-pull tube, and each of the second breaks is arranged opposite to each of the first breaks.

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

5. The manual push-pull Eustachian tube endoscope according to claim 2, characterized in that: The outer shell is provided with a first through slot connected to the first cavity, and the first through slot extends along the length direction of the sleeve. The inner shell is provided with a second through slot connected to the second cavity, and the second through slot extends along the length direction of the sleeve and corresponds to the first through slot. The second driving unit includes a moving seat, a push rod and a locking rod. The moving seat is slidably arranged in the second cavity and can reciprocate along the length direction of the sleeve. The moving seat is fixedly connected to the other end of the push-pull tube, and one end of the push rod is fixedly connected to the moving seat. The other end of the push rod slides through the second through slot and the first through slot and extends out of the outer shell. One end of the locking rod is detachably connected to the moving seat and the inner shell to lock the position of the moving seat, and the other end of the locking rod slides through the second through slot and the first through slot and extends out of the outer shell.

6. The manual push-pull Eustachian tube endoscope according to claim 5, characterized in that: The handle body also includes a guide rod, which is arranged in the second cavity and extends along the length direction of the sleeve. Both ends of the guide rod are fixedly connected to the inner shell, and the movable seat is slidably sleeved on the guide rod.

7. The manual push-pull Eustachian tube endoscope according to claim 6, characterized in that: A screw hole is provided on the movable seat, and a second thread is provided on one end of the locking rod. One end of the locking rod passes through the screw hole and is threadedly connected with the second thread. By rotating the locking rod, the end face of the locking rod can be pressed against or separated from the guide rod.

8. The manual push-pull Eustachian tube endoscope according to claim 2, characterized in that: It also includes a treatment unit, which includes a guide wire and a balloon. The guide wire slides through the sleeve, the outer shell and the inner shell. The balloon is fixedly connected to one end of the guide wire to treat the lesion in the Eustachian tube.

9. The manual push-pull Eustachian tube endoscope according to claim 8, characterized in that: The outer shell is provided with two first through holes, the two first through holes are coaxially arranged and are both connected to the first cavity, one end of the sleeve is connected to one of the first through holes, and the inner shell is provided with two second through holes, the two second through holes are coaxially arranged with the two first through holes, and are both connected to the second cavity, the sleeve, the two first through holes and the two second through holes form a guide channel, and the guide wire slides through the guide channel.

10. The manual push-pull Eustachian tube endoscope according to claim 1, characterized in that: It also includes a lighting unit, which is used to illuminate the camera.

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