Eustachian tube examination and treatment system

Abstract

The invention relates to an examination and treatment system for an auditory tube. The examination and treatment system comprises an auditory tube endoscope, a connecting seat, a sheathing canal, an infusion tube and a balloon stent, the Eustachian tube endoscope comprises a handheld part, an endoscope tube with one end connected with the handheld part, and a lens installed at the end, away from the handheld part, of the endoscope tube. The connecting base is detachably connected to one end of the handheld part and used for allowing the end, provided with the lens, of the lens tube to penetrate out. The sheathing canal is detachably arranged on the connecting base in a sleeving mode, and the end, provided with the lens, of the lens tube penetrates out of the sheathing canal; one end of the infusion tube is detachably connected with the connecting base, when one end of the infusion tube is connected with the connecting base, the infusion tube penetrates out of the sheath tube, and the end, provided with the lens, of the lens tube penetrates out of the infusion tube; the balloon support detachably penetrates out of the sheath tube. The Eustachian tube examination and treatment system can be used for different application scenes on the basis of accurately detecting the Eustachian tube, and the Eustachian tube examination and treatment efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of medical devices, and in particular to a Eustachian tube inspection and treatment system. Background Art

[0002] The Eustachian tube, as a key channel connecting the nasopharynx and the middle ear tympanic cavity, is of great significance to the human body. It can balance the bones of the middle ear and the external pressure. Especially when taking an airplane or a high-speed train, the mucous membrane in the Eustachian tube area will become congested and edematous, which can relieve ear stuffiness by balancing the pressure inside and outside the tympanic cavity of the middle ear. The main function of the Eustachian tube is to regulate the pressure in the tympanic cavity. It also has a drainage function to discharge secretions from the tympanic cavity of the middle ear. The Eustachian tube near the tympanic cavity is often open; the Eustachian tube near the nasopharynx can shrink or expand, and is usually closed. It opens when swallowing, yawning, singing, or blowing your nose hard.

[0003] Traditional detection methods face challenges due to the limitation of direct vision for the deep anatomical structure of the Eustachian tube, and it is difficult to accurately capture its internal pathological changes. With the rapid development of medical technology and the continuous improvement of clinical diagnosis and treatment accuracy, the demand for a medical device that can accurately and efficiently explore the subtle conditions inside the Eustachian tube has become more urgent. Against this background, Eustachian tube endoscopy technology came into being. It represents a major advancement in the field of visual inspection and treatment of the Eustachian tube, and opens up new possibilities for the accurate diagnosis and treatment of Eustachian tube diseases.

[0004] In the prior art, the Eustachian tube inspection and treatment device usually includes a Eustachian tube endoscope. However, the application of the Eustachian tube endoscope is limited by the limitations of endoscopic technology. Its single function makes the clinical operation complicated and inefficient, and it is difficult to meet the growing medical needs. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an improved Eustachian tube inspection and treatment system.

[0006] The technical solution adopted by the present invention to solve the technical problem is: constructing a Eustachian tube inspection and treatment system, including a Eustachian tube endoscope, a connecting seat, a sheath, an infusion tube, and a balloon bracket;

[0007] The Eustachian tube endoscope comprises a handheld portion, a mirror tube having one end connected to the handheld portion, and a lens installed at one end of the mirror tube away from the handheld portion;

[0008] The connecting seat is detachably connected to one end of the handheld part, and is used for allowing one end of the lens tube having the lens to pass through;

[0009] The sheath tube is detachably sleeved on the connecting seat, and one end of the lens tube having the lens is passed through the sheath tube and arranged;

[0010] One end of the infusion tube is detachably connected to the connection seat. When one end of the infusion tube is connected to the connection seat, the infusion tube is passed through the sheath tube, and one end of the mirror tube having the lens is passed through the infusion tube;

[0011] The balloon support is detachably arranged to pass through the sheath tube.

[0012] In some embodiments, the lens includes a lens housing, a CMOS camera, a light-guiding optical fiber, and an electrical connection line; the lens housing is a through structure at both ends, one end is connected to the lens tube, and the other end is provided with a lens; the CMOS camera is arranged in the lens housing and is located on one side of the lens; the light-guiding optical fiber is arranged on the periphery of the CMOS camera and is extended from one end of the lens housing away from the CMOS camera, and the electrical connection line is connected to the CMOS camera and is extended from one end of the lens housing away from the CMOS camera.

[0013] In some embodiments, the mirror tube includes a first tube section and a second tube section which are connected to each other; the second tube section is disposed at one end of the first tube section and is bent; the hardness of the first tube section is greater than the hardness of the second tube section;

[0014] The lens is installed at an end of the second tube section away from the first tube section.

[0015] In some embodiments, the outer diameter of the first tube segment is between 0.9-1.0 mm;

[0016] And / or, the outer diameter of the second pipe section is between 0.9-1.0 mm;

[0017] And / or, the length of the first pipe segment is greater than the length of the second pipe segment.

[0018] In some embodiments, the handheld portion includes a first end and a second end disposed opposite to the first end, the first end is connected to the mirror tube, and the second end is connected to a plug;

[0019] The handheld part is provided with a first screw connection structure, which is located at the first end and is used for connecting with the connecting seat.

[0020] In some embodiments, the connection seat includes an infusion tube connection portion, a limit portion disposed on the infusion tube connection portion, and an infusion interface; the infusion interface is disposed on the limit portion and communicated with the infusion tube connection portion;

[0021] A first card insertion structure is provided at one end of the infusion tube connection portion, and the first card insertion structure is used for detachably connecting with the infusion tube;

[0022] The other end of the infusion tube connecting part is provided with a second threaded structure, and the second threaded structure is used for detachably connecting with the handheld part.

[0023] In some embodiments, the inner side of the infusion tube connection portion is a hollow structure with two ends penetrating therethrough, forming a first channel for the mirror tube to pass through;

[0024] And / or, the outer side wall of the infusion tube connecting portion is provided with at least one second channel, and the second channel is used for guiding the installation of the balloon stent;

[0025] And / or, the outer side wall of the infusion tube connecting portion is provided with a sliding groove cooperating with the sheath tube.

[0026] In some embodiments, the infusion tube includes a main body portion, a guide portion, and a connecting portion that are connected to each other; the main body portion includes a straight section and a bent section that are connected to each other; one end of the straight section is connected to the connecting portion, and the other end is connected to the bent section, and the hardness of the straight section is greater than that of the bent section; the guide portion is arranged at one end of the bent section away from the straight section; the connecting portion is provided with a second plug-in structure that is detachably connected to the connecting seat.

[0027] In some embodiments, the sheath tube includes a sheath tube main sleeve and a sheath tube body connected to one end of the sheath tube main sleeve; the sheath tube main sleeve is a through-end structure and is connected to the sheath tube body; a sheath tube joint is provided at one end of the sheath tube body, and a rotating connection structure is provided on the sheath tube joint and the sheath tube main sleeve;

[0028] One end of the sheath tube main body sleeve away from the sheath tube body is provided with a through groove for the balloon stent to pass through; and / or a locking structure that is locked and matched with the connecting seat is provided on the side wall of the sheath tube main body sleeve.

[0029] In some embodiments, the balloon stent includes a balloon assembly, a delivery tube, and a joint structure; the balloon assembly is connected to one end of the delivery tube; the joint structure is connected to the other end of the delivery tube and can be detachably passed through the sheath tube;

[0030] The balloon assembly includes a balloon, a balloon joint, and a connecting pipe; the balloon is arranged at one end of the connecting pipe; the balloon joint is arranged at the other end of the connecting pipe; the connecting pipe includes an inner channel for the mirror tube to pass through and an outer channel arranged on the outer periphery of the inner channel; the outer channel is connected to the balloon; the balloon joint includes a first interface, a second interface and a third interface, the first interface is connected to the connecting pipe, the second interface is connected to the delivery pipe; the third interface is connected to the infusion tube.

[0031] The implementation of the Eustachian tube inspection and treatment system of the present invention has the following beneficial effects: the Eustachian tube inspection and treatment system is provided with a Eustachian tube endoscope, an infusion tube, a connecting seat, a sheath tube and a balloon support, and the connecting seat is detachably connected to one end of the handheld part, the sheath tube is detachably sleeved on the connecting seat, and one end of the infusion tube is detachably connected to the connecting seat and the balloon support is detachably passed through the sheath tube, so that the Eustachian tube inspection and treatment system can be used for different application scenarios (such as extracting effusion, infusing drugs, and dilation treatment of the Eustachian tube) on the basis of accurate detection of the Eustachian tube, thereby improving the efficiency of Eustachian tube inspection and treatment and meeting the needs of modern medicine for accurate, efficient, and integrated diagnosis and treatment tools. The Eustachian tube inspection and treatment system has the characteristics of functional diversity, accuracy and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0033] Figure 1 is a structural schematic diagram of the Eustachian tube inspection and treatment system in the first embodiment of the present invention;

[0034] Figure 2 yes Figure 1 A cross-sectional view of the Eustachian tube inspection and treatment system is shown;

[0035] Figure 3 yes Figure 1 The schematic diagram of the structure breakdown of the Eustachian tube inspection and treatment system shown;

[0036] Figure 4 yes Figure 3 A partial structural cross-sectional view of the Eustachian tube endoscope in the Eustachian tube inspection and treatment system;

[0037] Figure 5 yes Figure 3 A cross-sectional view of the lens of the Eustachian tube endoscope in the Eustachian tube inspection and treatment system;

[0038] Figure 6 yes Figure 5 A cross-sectional view of the local structure of the scope tube of the Eustachian tube endoscope in the Eustachian tube inspection and treatment system;

[0039] Figure 7 yes Figure 6 Another partial structural cross-sectional view of the mirror tube shown;

[0040] Figure 8 yes Figure 3 A cross-sectional view of a handheld portion of the Eustachian tube endoscope in the Eustachian tube inspection and treatment system;

[0041] Fig. 9 yes Figure 3 A cross-sectional view of a plug of the Eustachian tube endoscope in the Eustachian tube inspection and treatment system;

[0042] Fig.10 yes Figure 3 A cross-sectional view of the connection seat and the infusion tube connection in the Eustachian tube inspection and treatment system;

[0043] Fig.11 yes Fig.10 A partial cross-sectional view of a connection seat in the Eustachian tube inspection and treatment system shown;

[0044] Fig.12 yes Figure 3 A cross-sectional view of a sheath in a Eustachian tube inspection and treatment system is shown;

[0045] Fig.13 yes Figure 3 Another cross-sectional view of the sheath in the Eustachian tube inspection and treatment system;

[0046] Fig.14 yes Figure 3 The schematic diagram of the structure of the balloon stent in the Eustachian tube inspection and treatment system shown;

[0047] Fig.15 is a structural schematic diagram of a Eustachian tube inspection and treatment system in a second embodiment of the present invention;

[0048] Fig.16 yes Fig.15 The schematic diagram of the structure breakdown of the Eustachian tube inspection and treatment system shown;

[0049] Fig.17 is a structural schematic diagram of a Eustachian tube inspection and treatment system in a third embodiment of the present invention;

[0050] Fig.18 yes Fig.17 The schematic diagram of the structure breakdown of the Eustachian tube inspection and treatment system shown;

[0051] Fig.19 is a structural schematic diagram of a Eustachian tube inspection and treatment system in a fourth embodiment of the present invention;

[0052] Fig. 20 yes Fig.19 Schematic diagram of the structural breakdown of the Eustachian tube examination and treatment system. DETAILED DESCRIPTION

[0053] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "upper", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0054] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third", etc. can explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0055] Figure 1 Some preferred embodiments of the Eustachian tube inspection and treatment system of the present invention are shown. The Eustachian tube inspection and treatment system can penetrate deep into the Eustachian tube to achieve high-definition imaging, accurately inspect and diagnose the health status of the Eustachian tube, and on the basis of this inspection function, it also integrates treatment functions such as extraction of effusion, infusion of drugs, and dilation treatment of the Eustachian tube. The Eustachian tube inspection and treatment system simplifies the clinical operation process, improves treatment efficiency and effect, and meets the needs of modern medicine for accurate, efficient, and integrated diagnosis and treatment tools. The Eustachian tube inspection and treatment system can improve the accuracy and efficiency of the inspection, diagnosis and in-depth treatment of Eustachian tube and middle ear tympanic cavity diseases, and the overall equipment occupies a small space, which is conducive to improving space utilization.

[0056] like Figures 1 to 3As shown, further, in this embodiment, the Eustachian tube inspection and treatment system includes a Eustachian tube endoscope 10, a connecting seat 20, a sheath 40, an infusion tube 30 and a balloon stent 50. The Eustachian tube endoscope 10 can penetrate into the Eustachian tube to achieve high-definition imaging and accurately inspect and diagnose the health status of its Eustachian tube. The connecting seat 20 is detachably connected to the Eustachian tube endoscope 10, and is used to be detachably connected to the sheath 40 and the infusion tube 30. The sheath 40 is detachably mounted on the connecting seat 20 to provide a strong channel for the Eustachian tube endoscope 10. One end of the infusion tube 30 is detachably connected to the connecting seat for infusion of drugs. The balloon stent 50 is detachably passed through the sheath 40 and can be used for dilation treatment of the Eustachian tube.

[0057] like Figures 4 to 9 As shown, in this embodiment, the Eustachian tube endoscope 10 may include a handheld portion 11, a mirror tube 12 and a lens 13. The handheld portion 11 is used for the operator to hold, and can be arranged longitudinally, including a first end and a second end arranged opposite to the first end. In this embodiment, the first end can be connected to the mirror tube 12, and the second end is connected to a plug 14, and the plug 14 can be connected to the handheld portion 11 by setting a connecting wire 15. The mirror tube 12 is slender, one end of which can be connected to the first end of the handheld portion 11, and the other end can be installed with the lens 13. The slender mirror tube 12 can facilitate the penetration into the interior of the Eustachian tube. In some embodiments, the lens 13 is installed at one end of the mirror tube 12 away from the handheld portion 11, and is used to obtain the Eustachian tube image.

[0058] In this embodiment, the handheld part 11 may include a housing 111. The housing 111 may be made of plastic material and may be used to load components. In some other embodiments, the housing 111 may also be made of metal material. In some embodiments, the housing 111 may include a first shell and a second shell spliced ​​with the first shell, and the joint between the first shell and the second shell may be sealed with a sealant to maintain an internal and external isolation state. The housing 111 may be sterilized by immersion during disinfection.

[0059] In this embodiment, a fixing frame 112 is provided in the housing 111, and the fixing frame 112 can fix the light source 113 and the focusing lens 114, and has a heat dissipation function, which can be used to quickly dissipate the heat generated by the components. The light source 113 can be an LED lamp bead. The focusing lens 114 and the light source 113 are both arranged in the fixing frame 112, and the focusing lens 114 is arranged in the light emitting direction of the light source 113 and is located on the central axis of the lens 13, which is used to converge the light. Specifically, the light of the LED lamp bead can be converged to the end face of the light guide fiber 134 of the lens 13, so that even if a low-power LED lamp bead is selected, the illumination suitable for clinical surgery can be achieved, and the conversion efficiency of the light source is greatly improved. In some embodiments, since the LED lamp bead is a cold light source, it will not cause a thermal effect when irradiated into the human body. In some embodiments, the back circuit board of the light source 113 can be an aluminum alloy plate, which can quickly conduct heat to the fixing frame 112, so that the heat can be quickly dissipated. In some embodiments, a threading hole can be opened on the fixing frame 112. In this embodiment, there can be four threading holes, which can be used to thread electronic wires.

[0060] In this embodiment, a control board 115 is provided in the housing 111. The control board 115 can be fixed in the housing 111 by welding and is electrically connected to the lens 13. A button 116 is provided on the housing 111. There can be two buttons 116, one of which can be a photo button and the other can be a recording button. The photo button and the recording button can be connected to the control board 115 by providing a conductive wire. Specifically, the conductive wires of the photo button and the recording button can be connected to the control board 115 by welding.

[0061] In this embodiment, a first screw connection structure 117 is provided on the handheld portion 11, and the first screw connection structure 117 is installed at the first end, that is, the end of the housing 111 facing the lens 13. In some embodiments, the first screw connection structure 117 can be a threaded sleeve with an internal thread, which can be coaxially arranged with the housing 111 and fixedly arranged with the housing 111. Specifically, the first screw connection structure 117 can be fixed to the housing 111 by interference fit, plug-in or adhesive. The first screw connection structure 117 can be sleeved on the connecting seat 20 for screwing and fixing with the connecting seat 20. In some embodiments, the first screw connection structure 117 can also directly cooperate with the infusion tube 30, and when cooperating with the infusion tube 30, the infusion tube 30 can be rotated and fixed.

[0062] In this embodiment, the second end of the handheld portion 11 may be provided with a first sheath 118, and the first sheath 118 may be located at an end of the housing 111 away from the first screw structure 117. The first sheath 118 may be at least partially embedded in the housing 111, and fixed to the housing 111 by interference fit. In some embodiments, the first sheath 1118 is a through-structure at both ends, and a threading channel may be formed inside. The first sheath 118 may be made of rubber material, which may be bonded and pressed to the connecting wire 15 connected to the plug 14, and has a sealing function while protecting the connecting wire 15.

[0063] In this embodiment, the mirror tube 12 may include a first tube section 121 and a second tube section 122, and the second tube section 122 is arranged at one end of the first tube section 121 and is bent. The first tube section 121 and the second tube section 122 are connected to each other. The hardness of the first tube section 121 is greater than the hardness of the second tube section 122. Specifically, the first tube section 121 is a hard tube and is arranged in a straight line. The second tube section 122 can be a soft tube and can be bent. In this embodiment, the length of the first tube section 121 can be greater than the length of the second tube section 122. In this embodiment, the mirror tube 12 also includes a plug connector 123, which can be inserted into the first screw structure 117 and the housing 111, and can limit the degree of freedom of the first screw structure 117, and connect and fix the first screw structure 117 to the housing 111. The plug connector 123 can be coaxially arranged with the first screw structure 117, and be plugged and fixed with the first screw structure 117. There is a gap between the plug connector 123 and a portion of the inner wall of the first screw structure 117 to facilitate the insertion of the connection socket 20 .

[0064] In this embodiment, the length of the first pipe section 121 is 150 mm-250 mm (including both end values), and optionally, the length of the first pipe section 121 can be 200 mm. In this embodiment, the outer diameter of the first pipe section 121 can be 0.9-1.0 mm (including both end values), and by selecting the above size, it is convenient for the mirror tube 12 to extend into the inner side of the Eustachian tube. In this embodiment, the first pipe section 121 can be a steel pipe. The ends of the first pipe section 121 and the second pipe section 122 can be fixed by gluing.

[0065] In this embodiment, the length of the second tube segment 122 can be 30 mm-70 mm (including both end values), and optionally, the length of the second tube segment 122 can be 50 mm. The outer diameter of the second tube segment 122 can be 0.9-1.0 mm (including both end values). In this embodiment, the interior of the second tube segment 122 can be used to pass the light-guiding optical fiber 134 and the electrical connection line 135 in the lens 13. In some embodiments, the second tube segment 122 can be a soft PI tube. One end of the second tube segment 122 can be connected to the lens housing 131 of the lens 13, and the other end thereof can be connected to the first tube segment 121.

[0066] By adopting a combination of a hose and a hard tube, the lens 13 can be conveniently introduced into the mouth of the Eustachian tube through the first tube section 121 according to actual clinical needs, so that the lens tube 12 has good insertion guidance, and can well protect the soft wires inside (the wires can be the electrical connection wires 135 and the light guide optical fiber 134 of the lens 13) and ensure the reliability of the wire connection. After entering the Eustachian tube, the second tube section 122 can be bent in any direction, thereby improving the convenience of clinical operation.

[0067] In this embodiment, the lens 13 is roughly cylindrical, with an outer diameter of 0.9-1.0 mm (including both end values) and a length of 3-5 mm (including both end values). The lens 13 may include a lens housing 131, a lens 132, a CMOS camera 133, a light guide fiber 134, and an electrical connection line 135. The lens 13 has the advantages of high imaging pixels, miniaturization, and clear images.

[0068] In this embodiment, the lens housing 131 can be used to fix and seal the CMOS camera 133. Specifically, in this embodiment, the lens housing 131 can be a through structure at both ends. Further, in this embodiment, the lens housing 131 can be a round tube. The lens 132 can be in the shape of a disc, which can be arranged at one end of the lens housing 131, and has the function of sealing and protecting the CMOS camera 133. The end of the lens housing 131 away from the lens 132 can be connected to the lens tube 12. Specifically, the end of the lens housing 131 away from the end of the lens 132 can be fixed to the end of the second tube section 122 away from the first tube section 121 by setting glue. In this embodiment, the CMOS camera 133 is arranged in the lens housing 131 and is located on one side of the lens 132. The cross section of the CMOS camera 133 can be roughly square, and it is an ultra-micro camera with a side length of 0.65mm×0.65mm. The package size of the CMOS camera 133 is only 0.55mm×0.55mm, and the package size with the lens is 0.65mm×0.65mm, the pixel size is 1.0um, the optical size is 1 / 31 inch, and the imaging can reach 160,000 pixels (400×400) and the frame rate is 30fps. The light-guiding optical fiber 134 is arranged on the periphery of the CMOS camera 133, and passes through the end of the lens housing 131 away from the CMOS camera 133, and can pass through the second tube section 122 and then pass through the first tube section 121, and then pass into the handheld part 11. There can be multiple light-guiding optical fibers 134, and the multiple light-guiding optical fibers 134 can be arranged around the CMOS camera 133 to transmit light sources to illuminate the observed object. One end of each light-guiding optical fiber can be tightly attached to the lens 132, and the other end is tightly bound and placed at the focus of the focusing lens 114 to generate the light source required for imaging. There can be four electrical connection wires 135, one end of the four electrical connection wires 135 can be connected to the CMOS camera 133, and the other end can pass through one end of the lens housing 131 away from the CMOS camera 133. The electrical connection wires 135 can be used for power supply and transmission of video signals.

[0069] like Fig. 9As shown, in this embodiment, the plug 14 may include a seat body 141 and a connector 143 disposed on the seat body 141. A second sheath 142 is disposed at one end of the seat body 141, and the seat body 141 may be connected to the connecting wire 15 through the second sheath 142. The seat body 141 may be made of plastic material. The second sheath 142 may be an SR sheath, which is used to protect the connecting wire 15 from being easily broken. In some embodiments, the seat body 141 may protect the first seat body and the second seat body that are assembled with each other, and the first seat body and the second seat body may be fixed by screws. One end of the connector 143 may be welded and fixed to the electronic wire in the connecting wire 15, and the other end may be connected to an external electronic camera system processing device to complete the connection and transmission of the power supply and signal line. The electronic wire may form the connecting wire 15 by wrapping the PVC sheath, and one end of the connecting wire 15 may be connected to the connector 143, and the other end may be connected to the handheld part 11.

[0070] like Figure 10 to Figure 11As shown, in this embodiment, the connection seat 20 is detachably connected to one end of the handheld part 11, and is used for one end of the mirror tube 12 with the lens 13 to pass through. In this embodiment, the connection seat 20 may include an infusion tube connection part 21. In this embodiment, the infusion tube connection part 21 may be tubular, a hollow structure with two ends passing through, and a first channel 213 may be formed inside thereof, and the first channel 213 may be used for the mirror tube 12 to pass through. A first card structure 211 may be provided at one end of the infusion tube connection part 21, and the first card structure 211 may be a plug-in column, which may be inserted into the infusion tube 30, and then may be detachably connected to the infusion tube 30. The other end of the infusion tube connection part 21 is provided with a second screw structure 212, which can be an external thread structure, which can be provided on the outer wall of the infusion tube connection part 21. When the infusion tube connection part 21 is connected to the handheld part 11, the infusion tube connection part 21 can be inserted into the first screw structure 117, and the first screw structure 117 can be screwed with the second screw structure 212, so that the connection seat 20 and the handheld part 11 are fixedly arranged. The through hole of the connection seat 20 and the handheld part 11 is matched with the insertion part of the housing 111 of the handheld part 11 at one end facing the lens 13 with high precision, and has structural and sealing properties. In some embodiments, the outer side wall of the infusion tube connection part 21 can be provided with at least one second channel 214, and the second channel 214 can be arranged along the axial direction of the infusion tube connection part 21. There can be two second channels 214, and the two second channels 214 are symmetrically arranged. Each second channel 214 can be formed by opening a groove on the outer side wall of the infusion tube connection part 21. The second channel 214 can be used to provide installation guidance for the balloon stent 50 when the connection seat 20 is assembled with the balloon stent 50, and ensure that the delivery pipeline 52 that squeezes the balloon stent 50 will not be cut off when the infusion tube connection part 21 and the sheath tube 40 slide and cooperate in axial movement. In some other embodiments, the second channel 214 can be omitted. In some embodiments, the outer wall of the infusion tube connection part 21 is provided with a slide groove 215, and the slide groove 215 can be spaced apart from the second channel 214 in the circumferential direction of the infusion tube connection part 21. In some embodiments, the slide groove 215 can be extended along the axial direction of the infusion tube connection part 21, and the slide groove 215 can cooperate with the sheath tube 40 so that the sheath tube 40 can slide axially in the infusion tube connection part 21 to adjust the depth of the Eustachian tube endoscope 10 entering the Eustachian tube.

[0071] The connection seat 20 also includes a limit portion 22 and an infusion interface 23. The limit portion 22 can be arranged on the infusion tube connection portion 21, and is used to limit the sheath 40. Specifically, the limit portion 22 can be roughly annular, and can be coaxially arranged with the infusion tube connection portion 21, and can be integrally formed with the infusion tube connection portion 21, and the outer diameter of the limit portion 22 can be greater than the outer diameter of the infusion tube connection portion 21. The infusion interface 23 can be arranged on the limit portion 22 and communicated with the infusion tube connection portion 21. The central axis of the infusion interface 23 can form a set angle with the central axis of the infusion tube connection portion 21, and the set angle can be an acute angle. The infusion interface 23 adopts a Luer connector structure made of stainless steel material, which can be fixedly bonded to the infusion tube connection portion 21 by glue, and the infusion interface 23 is connected to the Luer connector of an external injection or extraction device, thereby realizing the injection or extraction function.

[0072] In this embodiment, one end of the infusion tube 30 is detachably connected to the connection seat 20, and it can be connected to the connection seat 20 for infusing drugs and extracting fluid from the Eustachian tube cavity, reducing the complexity of clinical operations and improving clinical operation efficiency. When one end of the infusion tube 30 is connectable to the connection seat 20, the infusion tube 30 can pass through the sheath tube 40, and one end of the mirror tube 12 with the lens 13 is passed through the infusion tube 30. In this embodiment, the infusion tube 30 may include a main body 31, a guide portion 32, and a connection portion 33. The main body 31, the guide portion 32, and the connection portion 33 are connected.

[0073] In some embodiments, the main body 31 may include a straight section 311 and a bent section 312. The hardness of the straight section 311 is greater than the hardness of the bent section 312. The straight section 311 may be made of a rigid material, such as stainless steel. The bent section 312 is an infusion hose, which may be made of a soft material, such as a soft rubber material. One end of the straight section 311 may be connected to the connecting portion 33, and the other end may be connected to the bent section 312. In some embodiments, the straight section 311 and the bent section 312 are interconnected. The guide portion 32 is disposed at one end of the bent section 312 away from the straight section 311. In some embodiments, the guide portion 32 is a smooth structure, which can ensure that the infusion tube 30 does not damage soft human tissue when inserted into the Eustachian tube.

[0074] Specifically, in this embodiment, the guide portion 32 can be a smooth joint made of stainless steel. The guide portion 32 and the bending section 312 can be fixed by glue.

[0075] In some embodiments, the connecting portion 33 can be sleeved on one end of the straight section 311 away from the bent section 312. The connecting portion 33 can be used to be detachably connected to the connecting seat 20. Specifically, in some embodiments, the connecting portion 33 is provided with a second card insertion structure 331 detachably connected to the connecting seat 20, and the second card insertion structure 331 can be plugged with the first card insertion structure 211. In this embodiment, the second card insertion structure 331 can be a plug-in hole, which can be inserted into the plug-in column. The connecting portion 33 can be a Luer joint structure made of plastic material, which is fixed to the main body 31 by glue. The connecting portion 33 is designed to be detachably connected to the connecting seat 20. During clinical operation, it can be assembled or removed from the connecting seat 20 as needed. When the main body 31 is damaged, the main body 31 can be easily replaced.

[0076] In this embodiment, the infusion hose is a corrugated tube made of a soft material such as silicone, which is easy to bend and has radial bearing capacity. When the effusion in the Eustachian tube is extracted, the infusion hose will not block the extraction channel due to the collapse of the tube wall caused by the extraction negative pressure. The other end of the main body 31 is glued and fixed to the connecting part 33, and its outer diameter can be 1.5-2.0 mm.

[0077] In actual clinical practice, the wall of the infusion hose bears the pressure from the inside to the outside when the liquid is injected (in clinical drug infusion therapy). Generally, this pressure of 10-20Pa can meet the clinical drug infusion therapy in the Eustachian tube.

[0078] In actual clinical practice, when the infusion tube is used to extract the fluid in the Eustachian tube, its wall is subjected to pressure from the outside to the inside, that is, negative pressure. Generally, this negative pressure of 10-20Pa can meet the actual clinical demand for extracting the fluid in the Eustachian tube. Therefore, when designing an infusion hose, the following three points need to be met:

[0079] 1. According to actual clinical practice, the infusion hose can be bent at the bending part of the sheath tube 40 with the axial thrust;

[0080] 2. The infusion hose can infuse liquids at a pressure of 60Pa (3 times the actual use pressure) without the tube wall breaking;

[0081] 3. When the infusion hose is extracting the accumulated fluid, under the negative pressure of -60Pa, the tube wall will not be flattened together to cause channel blockage.

[0082] Therefore, according to the calculation simulation, the material of the infusion hose is a silicone bellows with a wall thickness of 0.10mm and its dimensions are: outer diameter 2.0mm, inner diameter 1.7mm.

[0083] According to the document "Clinical Practice Guidelines for Intratympanic Drug Administration" (published in the Chinese Journal of Otorhinolaryngology and Skull Base Surgery, Vol. 30, No. 1, February 2024, DOl:10.11798 / j.issn.1007-1520.202423362), the current status of intratympanic drug administration is described as follows: the current common method of drug administration is to puncture the tympanic membrane through the external ear to administer the drug into the tympanic cavity, the dosage is <5mL, and the injection time is 60s.

[0084] The drug administration method introduced in this embodiment is: operate the infusion tube of this system from the nasal cavity through the Eustachian tube to the middle ear tympanic cavity to infuse the drug; the biggest advantage of such a change in operation method is: no damage to the tympanic membrane, reducing the risk of infection after puncturing the tympanic membrane; with such a Eustachian tube inspection and treatment system, doctors are provided with a non-destructive treatment method.

[0085] According to this dosing method, the designed dosing liquid extraction tube has an inner diameter of 1.7mm, and an ultra-thin Eustachian tube endoscope with an outer diameter of 1.0mm is inserted in the middle, and a model simulation is performed. Through simulation and calculation, it is known that the dosing pressure is 10Pa, and the simulated monitoring point Point 01 is at the outlet of the infusion tube; through the simulation coordinates, it is known that the dosing speed at this time is 0.043m / s, so the dosing volume per second can be calculated as 0.043*3.14*(0.85*0.85-0.5*0.5) / 1000000=0.06(ml / s), that is, 3.6ml / min.

[0086] The deformation degree of the infusion tube 30 under the condition of negative pressure of 100Pa is further simulated. In order to fully verify, in the extreme case, when there is negative pressure on only two sides, the deformation degree is discussed. Through simulation, it is known that a flexible soft rubber material (such as PVC or silicone) is used, the negative pressure of liquid extraction is 100Pa, and the negative pressure load is on two sides symmetrical in the Z direction. Through stress simulation, it is known that the stress is generally 4-5Kpa; and the strength of general soft rubber materials is 40-60Mpa, and the material strength meets the requirements. Through the displacement results of the simulation results, it is known that the maximum deformation displacement under Z-direction force is about 0.0006mm; for this tube function, the deformation displacement is no more than 0.1mm, and does not affect the clinical operation function of extracting liquid. Therefore, this tube can meet the requirements that when extracting effusion in clinical practice, the tube wall will not affect the extraction effect due to deformation.

[0087] like Fig.12 , Fig.13As shown, in this embodiment, the sheath tube 40 is arranged to pass through the end of the mirror tube 12 with the lens 13. The functions of the sheath tube 40 are: 1. to provide a strong channel for clinical operation, so as to facilitate the more convenient finding of the Eustachian tube opening during clinical operation; 2. to provide a sliding axial movement cavity for the mirror tube 12, so that the soft second tube section 122 of the mirror tube 12 can move forward in the Eustachian tube with a certain angle; 3. according to the clinical left and right Eustachian tubes and the habits of the surgical operator, the bending direction of the front end of the sheath tube 40 can be rotated to adapt to flexible clinical operations, and the rear handheld part 11 does not need to be rotated. The sheath tube 40 has a simple structure and low manufacturing cost, which is conducive to mass production by manufacturers.

[0088] In this embodiment, the sheath tube 40 may include a sheath tube main body sleeve 41 and a sheath tube body 42. The sheath tube main body sleeve 41 is a through structure at both ends. The sheath tube body 42 is connected to one end of the sheath tube main body sleeve 41. The sheath tube main body sleeve 41 and the sheath tube body 42 are connected to each other.

[0089] In the present embodiment, the sheath body sleeve 41 is a hollow structure, which can be sleeved on the outer periphery of the infusion tube connection portion 21 of the connection seat 20, and can make relative movement with the connection seat 20 in the axial direction. The sheath body sleeve 41 may include a first barrel 411 and a second barrel 412, and the first barrel 411 may be roughly cylindrical and may be arranged longitudinally. The second barrel 412 is arranged at one end of the first barrel 411, is roughly cylindrical, and its outer diameter is greater than the outer diameter of the first barrel 411. The second barrel 412 is connected to the first barrel 411 and is arranged in a step. In some embodiments, the second barrel 412 is an integrally formed structure with the periphery of the first barrel 411, and in some embodiments, a limited step 4121 is arranged on the inner side of the second barrel 412. In this embodiment, a through slot 413 is provided at one end of the sheath main body sleeve 41 away from the sheath tube body 42. The through slot 413 is generally U-shaped and can cooperate with the balloon stent 50 to allow the balloon stent 50 to pass through. In some embodiments, the through slot 413 can be on both sides, and the two through slots 413 can be arranged opposite to each other. In some other embodiments, the through slot 413 is not limited to being U-shaped, and is not limited to being two.

[0090] In the present embodiment, the sheath tube body 42 may include a first portion 42a and a second portion 42b; one end of the first portion 42a is connected to the second portion 42b, and the two are interconnected. The first portion 42a may be in a straight line shape, and the second portion 42b may be roughly in an arc shape. The sheath tube body 42 as a whole may be made of a rigid material, such as a stainless steel round tube material. According to the human anatomical structure of the nasal cavity and the Eustachian tube, the Eustachian tube and the nasal passage generally have an angle of about 135°. By designing the second portion 42b to have an arc angle of 135° and an arc radius of 20 to 30 mm, it is beneficial for the sheath tube body 42 to extend into the Eustachian tube.

[0091] A sheath tube connector 421 may be provided at one end of the sheath tube body 42, and a guide head 422 may be provided at the other end. Specifically, the sheath tube connector 421 is provided at one end of the first part 42a away from the second part 42b. The guide head 422 is provided at one end of the second part 42b away from the first part 42a. The guide head 422 and the sheath tube body 42, as well as the sheath tube connector 421 and the sheath tube body 42, may be bonded together by glue. The guide head 422 is made of stainless steel and finely polished, and has a smooth outer surface, so that it has the function of not scratching the soft tissue of the human body during clinical operation.

[0092] In some embodiments, the sheath connector 421 may be a conical structure and a hollow structure with two ends connected. It may be set to be contracted toward the first portion 42a, so as to facilitate the insertion of the mirror tube 12 of the Eustachian tube endoscope 10. In some embodiments, the sheath connector 421 may be made of stainless steel. The sheath connector 421 may include a conical portion 4211 and a positioning convex portion 4212. The conical portion 4211 is contracted toward the first portion 42a, and the positioning convex portion 4212 is arranged at one end of the conical portion 4211 away from the sheath tube body 42, and its outer diameter may be greater than the maximum outer diameter of the conical portion 4211. The outer diameter of the positioning convex portion 4212 may be equivalent to the outer diameter of the second barrel 412 of the sheath tube 40.

[0093] In this embodiment, a rotation connection structure 43 is provided on the sheath tube joint 421 and the sheath tube main body sleeve 41. The rotation connection structure 43 can be used to connect the sheath tube joint 421 and the sheath tube main body sleeve 41. The rotation connection structure 43 may include a sheath tube rotating head 431, a rotation positioning pin 432 and a rotation locking nut 433.

[0094] The sheath rotating head 431 is partially inserted into the sheath connector 421 and partially inserted into the sheath main body sleeve 41, and is coaxially arranged with the sheath connector 421 and the sheath main body sleeve 41. In some embodiments, the sheath rotating head 431 can be bonded to the sheath connector 421 by glue. The sheath rotating head 431 is provided with a plurality of through holes 4311, which can be arranged at intervals along the circumference of the sheath rotating head 431, and can be used to cooperate with the rotating positioning pin 432. The outer wall of the sheath rotating head 431 can be provided with a threaded structure.

[0095] In this embodiment, there can be two rotation positioning pins 432, and the two rotation positioning pins 432 are arranged in two symmetrically arranged through holes 4311. Each rotation positioning pin 432 can correspond to a through hole 4311, and each rotation positioning pin 432 can be inserted into the gap formed between the second cylinder 412 and the sheath rotating head 431, and can be limited by the positioning protrusion 4212 and the limiting step 4121.

[0096] The rotating locking nut 433 is sleeved on the outer periphery of the positioning protrusion 4212 and the second cylinder 412, and is limited by the step surface where the second cylinder 412 and the first cylinder 411 meet. The rotating locking nut 433 can be threadedly connected to the sheath rotating head 431, so as to connect the sheath main sleeve 41 and the sheath body 42. In clinical operation, the bending direction can be loosened and adjusted at any time, and then the locking nut can be tightened again. A threaded structure is designed inside the rotating locking nut 433 to cooperate with the thread of the rotating joint; the rear end of the rotating locking nut 433 is designed with an L-shaped buckle structure; when locking, the L-shaped buckle structure cooperates with the step surface of the sheath main sleeve 41, thereby playing a locking role.

[0097] In this embodiment, a locking structure 44 may be provided on the side wall of the sheath main body sleeve 41, and the locking structure 44 may be used to lock and cooperate with the connecting seat 20. In this embodiment, the locking structure 44 is a rotatable locking structure, which may include a screwing portion 441 and a push rod 442 provided on the screwing portion 441. The screwing portion 441 is provided on the outside of the sheath main body sleeve 41, the push rod 442 is coaxially provided with the screwing portion 441, and the side wall of the sheath main body sleeve 41 penetrates into the sheath main body sleeve 41, and one end thereof penetrated into the sheath main body sleeve 41 is a spherical structure, and the push rod 442 may be inserted into the slide groove 215 of the connecting seat 20 and may be placed in the slide groove 215 for sliding. By rotating the locking structure 44 counterclockwise or clockwise, the sheath 40 and the connecting seat 20 may be locked or loosened, thereby facilitating the relative axial movement and locking and positioning of the sheath 40 and the connecting seat 20.

[0098] like Fig.14 As shown, in this embodiment, the balloon stent 50 can be used for dilation treatment of the Eustachian tube, and includes a balloon assembly 51, a delivery pipe 52, and a joint structure 53. One end of the balloon assembly 51 is connected to one end of the delivery pipe 52, and the balloon assembly 51 includes a balloon 511. The joint structure 53 is connected to one end of the delivery pipe 52 away from the balloon stent 50, and is detachably arranged through the sheath 40. Liquid can be injected from the joint structure 53, and the liquid can enter the balloon assembly 51 through the delivery pipe 52, so that the balloon 511 of the balloon assembly 51 is expanded, thereby achieving the therapeutic effect of dilating the Eustachian tube.

[0099] In this embodiment, the balloon 511 can be a soft, tough, thin-walled material that can withstand a minimum pressure of 1 MPa without breaking, and is suitable for clinical applications of balloon dilatation. The balloon assembly 51 may also include a connecting pipe 512 and a balloon joint 513. One end of the connecting pipe 512 is connected to the balloon 511 and communicates with the balloon 511. In some embodiments, the connecting pipe 512 is a hollow structure with two ends connected. The connecting pipe 512 may include an inner channel and an outer channel; wherein the central axis of the inner channel coincides with the central axis of the connecting pipe 512, and is used for the mirror tube 12 to pass through. The outer channel is arranged at the outer periphery of the inner channel, wherein the central axis is arranged non-coincidentally with the central axis of the inner channel, and the radial dimension of the outer channel may be smaller than the radial dimension of the inner channel. In some other embodiments, the central axis of the outer channel may also coincide with the central axis of the inner channel. The outer channel may be communicated with the balloon 511. The balloon joint 513 is arranged at one end of the connecting pipe 512 away from the balloon 511, and may be bonded and fixed to the connecting pipe 512 by glue. In some embodiments, the balloon joint 513 has three interfaces, that is, the balloon joint 513 may include a first interface, a second interface, and a third interface, the first interface may be connected to the connecting pipe 512, the second interface may be connected to the delivery pipe 52, and may be bonded and fixed to the delivery pipe 52 by using glue. The third interface may be connected to the infusion tube 30, and may be bonded and fixed to the infusion tube 30 by using glue. The balloon joint 513 is hollow, and the hollow channel may be connected to the scope tube 12.

[0100] In some embodiments, the outer diameter of the delivery pipe 52 can be 1 mm, and the interior is hollow, so that liquid can pass through it. The end of the delivery pipe 52 away from the balloon assembly 51 can be connected to the joint structure 53, and specifically, it can be fixed to the joint structure 53 by gluing. When used clinically, the delivery pipe 52 can be inserted into the second channel 214 of the connecting seat 20, that is, it can be inserted into the groove. The joint structure 53 can be a Luer joint. By using the Luer structure, it can be matched with other infusion equipment, and then liquid can be injected in the clinic to expand the balloon 511, and liquid can be extracted to shrink the balloon 511, thereby achieving the purpose of Eustachian tube dilation treatment.

[0101] The Eustachian tube inspection and treatment system of this embodiment can be used for Eustachian tube inspection, fluid extraction, drug infusion, and balloon dilatation. The assembly and connection steps of the Eustachian tube inspection and treatment system are as follows:

[0102] 1) Assemble the Eustachian tube endoscope 10 and the connecting seat 20; specifically, pass one end of the mirror tube 12 of the Eustachian tube endoscope 10 with the lens 13 from one end of the connecting seat 20 with the second screw structure 212 to the first card insertion structure 211, until one end of the second screw structure 212 is embedded in the handheld part 11 of the Eustachian tube endoscope 10, and is screwed to the second screw structure 212 through the first screw structure 117. At the same time, the direction can be adjusted by rotation so that the infusion interface 23 of the connecting seat 20 and the button 116 of the handheld part 11 are located in the same direction, and then locked.

[0103] 2) Assemble the infusion tube 30 and the connection base 20; specifically, a section of the mirror tube 12 can be passed through the connection base 20 and passed through the connecting portion 33 of the infusion tube 30 to the guide portion 32, and the lens 13 on the mirror tube 12 is set to pass through the guide portion 32, and the distance from the lens 13 to one end of the guide portion 32 can be 1-2mm. At the same time, the first card structure 211 of the connection base 20 is inserted into the connecting portion 33 of the infusion tube 30, and cooperates with the second card structure 331, so that the connection base 20 and the infusion tube 30 are tightly matched. The infusion interface 23 is externally connected to an infusion device that matches it.

[0104] 3) Install the balloon holder 50 (select a slightly larger size of balloon holder, and its size can match the length of the bending section 312 of the main body 31 in the infusion tube 30), insert the middle interface of the balloon joint 513 into the guide part 32 of the infusion tube 30 until the balloon 511 is sleeved on the guide part 32; the delivery pipe 52 of the balloon holder 50 is inserted into the groove of the connecting seat 20 and passed along the second channel 214. The groove can prevent the balloon delivery pipe 52 from being squeezed when the sheath tube 40 is inserted, and then the joint structure 53 is connected to the external device, so that the balloon can be expanded or contracted by infusing or extracting liquid to perform Eustachian tube dilation treatment.

[0105] 4) Install the sheath 40 (select a sheath 40 with a larger outer diameter of the sheath main sleeve 41 that does not exceed 3.5 mm, such as a sheath 40 with an outer diameter of 3 mm); pass the lens 13 of the Eustachian tube endoscope 10 from the end of the sheath main sleeve 42 away from the sheath body 41 toward the sheath body 41 until the sheath main sleeve 42 contacts the limiting portion 22 of the connecting seat 20, and at the same time, insert the top rod 442 of the locking structure 44 on the sheath main sleeve 42 into the slide groove 215 of the connecting seat 20, adjust the positional relationship between the guide head 422 of the sheath 40 and the lens 13, and then tighten the locking structure 44 to fix the sheath 40 on the connecting seat 20.

[0106] 5) Insert the plug 14 of the Eustachian tube endoscope 10 into the corresponding matching imaging device to complete the assembly and connection of the entire system.

[0107] The clinical operation of the Eustachian tube detection and treatment system of this embodiment is as follows:

[0108] (1) The doctor holds the hand-held portion 11 of the Eustachian tube endoscope 10 and inserts the sheath 40 from the patient's nasal cavity (depending on the patient's left and right ears, the direction of the curved portion of the sheath 40 can be adjusted when assembling the sheath 40 to facilitate inspection). After finding the pharyngeal opening of the Eustachian tube, the guide head 422 of the sheath 40 is directed toward the pharyngeal opening.

[0109] (2) Use your left hand to rotate the locking structure 44 of the sheath tube 40 to loosen it slightly.

[0110] (3) Use the right hand to push the mirror tube 12 so that the second tube section 122 of the mirror tube 12 extends out of the sheath tube 40 in the bending direction of the sheath tube 40 and enters the Eustachian tube.

[0111] (4) According to the actual clinical situation, the doctor can observe the displayed image while pushing the endoscope tube 12 to inspect the Eustachian tube.

[0112] (5) According to the actual clinical situation, the doctor can guide the Eustachian tube examination and treatment system through the Eustachian tube to the middle ear tympanic cavity to drain the fluid if there is fluid accumulation in the middle ear tympanic cavity.

[0113] (6) Based on the actual clinical situation, the doctor can guide the Eustachian tube examination and treatment system through the Eustachian tube to the middle ear tympanic cavity and infuse therapeutic drugs into the middle ear.

[0114] (7) According to the actual clinical situation, the doctor can tighten the locking structure 44 of the sheath 40 at the appropriate position of the Eustachian tube; at the same time, an external flushing and suction device can be used to inject and extract liquid from the balloon 511 to achieve the purpose of Eustachian tube balloon dilatation treatment.

[0115] Figure 15 to Figure 16 The second embodiment of the Eustachian tube inspection and treatment system of the present invention is shown. The difference between the second embodiment and the first embodiment is that the Eustachian tube inspection and treatment system can be used alone for Eustachian tube inspection according to clinical needs. The assembly and connection steps of the Eustachian tube inspection and treatment system are as follows:

[0116] 1) Assemble the Eustachian tube endoscope 10 and the connecting seat 20; specifically, pass one end of the mirror tube 12 of the Eustachian tube endoscope 10 with the lens 13 from one end of the connecting seat 20 with the second screw structure 212 to the first card insertion structure 211, until one end of the second screw structure 212 is embedded in the handheld part 11 of the Eustachian tube endoscope 10, and is screwed to the second screw structure 212 through the first screw structure 117. At the same time, the direction can be adjusted by rotation so that the infusion interface 23 of the connecting seat 20 and the button 116 of the handheld part 11 are located in the same direction, and then locked.

[0117] 2) Install the sheath 40 (select a sheath 40 with a smaller outer diameter of the sheath main sleeve 41, such as a sheath 40 with an outer diameter of 1-1.5 mm); pass the lens 13 of the Eustachian tube endoscope 10 from the end of the sheath main sleeve 42 away from the sheath body 41 toward the sheath body 41 until the sheath main sleeve 42 contacts the limiting portion 22 of the connecting seat 20, and at the same time, insert the top rod 442 of the locking structure 44 on the sheath main sleeve 42 into the slide groove 215 of the connecting seat 20, adjust the positional relationship between the guide head 422 of the sheath 40 and the lens 13, and then tighten the locking structure 44 to fix the sheath 40 on the connecting seat 20.

[0118] 3) Insert the plug 14 of the Eustachian tube endoscope 10 into the corresponding matching imaging device to complete the assembly and connection of the entire system.

[0119] The clinical operation of the Eustachian tube detection and treatment system of this embodiment is as follows:

[0120] (1) The doctor holds the hand-held portion 11 of the Eustachian tube endoscope 10 and inserts the sheath 40 from the patient's nasal cavity (depending on the patient's left and right ears, the direction of the curved portion of the sheath 40 can be adjusted when assembling the sheath 40 to facilitate inspection). After finding the pharyngeal opening of the Eustachian tube, the guide head 422 of the sheath 40 is directed toward the pharyngeal opening.

[0121] (2) Use your left hand to rotate the locking structure 44 of the sheath tube 40 to loosen it slightly.

[0122] (3) Use the right hand to push the mirror tube 12 so that the second tube section 122 of the mirror tube 12 extends out of the sheath tube 40 in the bending direction of the sheath tube 40 and enters the Eustachian tube.

[0123] (4) According to the actual clinical situation, the doctor can observe the displayed image while pushing the electronic mirror to complete the Eustachian tube examination.

[0124] Figure 17 to Figure 18 The third embodiment of the Eustachian tube inspection and treatment system of the present invention is shown. The difference between the third embodiment and the first embodiment is that the Eustachian tube inspection and treatment system can be used for Eustachian tube inspection, effusion extraction, and drug infusion according to clinical needs. The assembly and connection steps of the Eustachian tube inspection and treatment system are as follows:

[0125] 1) Assemble the Eustachian tube endoscope 10 and the connecting seat 20; specifically, pass one end of the mirror tube 12 of the Eustachian tube endoscope 10 with the lens 13 from one end of the connecting seat 20 with the second screw structure 212 to the first card insertion structure 211, until one end of the second screw structure 212 is embedded in the handheld part 11 of the Eustachian tube endoscope 10, and is screwed to the second screw structure 212 through the first screw structure 117. At the same time, the direction can be adjusted by rotation so that the infusion interface 23 of the connecting seat 20 and the button 116 of the handheld part 11 are located in the same direction, and then locked.

[0126] 2) Install the sheath 40 (select a sheath 40 with a larger outer diameter of the sheath main sleeve 41 that does not exceed 3.5 mm, such as a sheath 40 with an outer diameter of 3 mm; pass the lens 13 of the Eustachian tube endoscope 10 from the end of the sheath main sleeve 42 away from the sheath body 41 toward the sheath body 41 until the sheath main sleeve 42 contacts the limiting portion 22 of the connecting seat 20, and at the same time, insert the top rod 442 of the locking structure 44 on the sheath main sleeve 42 into the slide groove 215 of the connecting seat 20, adjust the positional relationship between the guide head 422 of the sheath 40 and the lens 13, and then tighten the locking structure 44 to fix the sheath 40 on the connecting seat 20.

[0127] 3) Insert the plug 14 of the Eustachian tube endoscope 10 into the corresponding matching imaging device to complete the assembly and connection of the entire system.

[0128] The clinical operation of the Eustachian tube detection and treatment system of this embodiment is as follows:

[0129] (1) The doctor holds the hand-held portion 11 of the Eustachian tube endoscope 10 and inserts the sheath 40 from the patient's nasal cavity (depending on the patient's left and right ears, the direction of the curved portion of the sheath 40 can be adjusted when assembling the sheath 40 to facilitate inspection). After finding the pharyngeal opening of the Eustachian tube, the guide head 422 of the sheath 40 is directed toward the pharyngeal opening.

[0130] (2) Use your left hand to rotate the locking structure 44 of the sheath tube 40 to loosen it slightly.

[0131] (3) Use the right hand to push the mirror tube 12 so that the second tube section 122 of the mirror tube 12 extends out of the sheath tube 40 in the bending direction of the sheath tube 40 and enters the Eustachian tube.

[0132] (4) According to the actual clinical situation, the doctor can observe the displayed image while pushing the endoscope tube 12 to inspect the Eustachian tube.

[0133] (5) According to the actual clinical situation, the doctor can guide the Eustachian tube examination and treatment system through the Eustachian tube to the middle ear tympanic cavity to drain the fluid if there is fluid accumulation in the middle ear tympanic cavity.

[0134] (6) Based on the actual clinical situation, the doctor can guide the Eustachian tube examination and treatment system through the Eustachian tube to the middle ear tympanic cavity and infuse therapeutic drugs into the middle ear.

[0135] Figure 19 to Figure 20 The fourth embodiment of the Eustachian tube inspection and treatment system of the present invention is shown. The difference between the fourth embodiment and the first embodiment is that the Eustachian tube inspection and treatment system can be used for Eustachian tube inspection and balloon dilatation treatment according to clinical needs. The assembly and connection steps of the Eustachian tube inspection and treatment system are as follows:

[0136] 1) Assemble the Eustachian tube endoscope 10 and the connecting seat 20; specifically, pass one end of the mirror tube 12 of the Eustachian tube endoscope 10 with the lens 13 from one end of the connecting seat 20 with the second screw structure 212 to the first card insertion structure 211, until one end of the second screw structure 212 is embedded in the handheld part 11 of the Eustachian tube endoscope 10, and is screwed to the second screw structure 212 through the first screw structure 117. At the same time, the direction can be adjusted by rotation so that the infusion interface 23 of the connecting seat 20 and the button 116 of the handheld part 11 are located in the same direction, and then locked.

[0137] 2) Install the balloon stent 50 (select a slightly larger size of balloon stent, and its size can match the length of the bending section 312 of the main body 31 in the infusion tube 30), insert the middle interface of the balloon joint 513 into the guide part 32 of the infusion tube 30 until the balloon 511 is sleeved on the guide part 32; the delivery pipe 52 of the balloon stent 50 is inserted into the groove of the connecting seat 20 and passed along the second channel 214. The groove can prevent the balloon delivery pipe 52 from being squeezed when the sheath tube 40 is inserted, and then the joint structure 53 is connected to the external device, so that the balloon can be expanded or contracted by infusing or extracting liquid to perform Eustachian tube dilation treatment.

[0138] 3) Install the sheath 40 (select a sheath 40 with a larger outer diameter of the sheath main sleeve 41 that does not exceed 3.5 mm, such as a sheath 40 with an outer diameter of 3 mm); pass the lens 13 of the Eustachian tube endoscope 10 from the end of the sheath main sleeve 42 away from the sheath body 41 toward the sheath body 41 until the sheath main sleeve 42 contacts the limiting portion 22 of the connecting seat 20, and at the same time, insert the top rod 442 of the locking structure 44 on the sheath main sleeve 42 into the slide groove 215 of the connecting seat 20, adjust the positional relationship between the guide head 422 of the sheath 40 and the lens 13, and then tighten the locking structure 44 to fix the sheath 40 on the connecting seat 20.

[0139] 4) Insert the plug 14 of the Eustachian tube endoscope 10 into the corresponding matching imaging device to complete the assembly and connection of the entire system.

[0140] The clinical operation of the Eustachian tube detection and treatment system of this embodiment is as follows:

[0141] (1) The doctor holds the hand-held portion 11 of the Eustachian tube endoscope 10 and inserts the sheath 40 from the patient's nasal cavity (depending on the patient's left and right ears, the direction of the curved portion of the sheath 40 can be adjusted when assembling the sheath 40 to facilitate inspection). After finding the pharyngeal opening of the Eustachian tube, the guide head 422 of the sheath 40 is directed toward the pharyngeal opening.

[0142] (2) Use your left hand to rotate the locking structure 44 of the sheath tube 40 to loosen it slightly.

[0143] (3) Use the right hand to push the mirror tube 12 so that the second tube section 122 of the mirror tube 12 extends out of the sheath tube 40 in the bending direction of the sheath tube 40 and enters the Eustachian tube.

[0144] (4) According to the actual clinical situation, the doctor can observe the displayed image while pushing the endoscope tube 12 to inspect the Eustachian tube.

[0145] (5) According to the actual clinical situation, the doctor can tighten the locking structure 44 of the sheath 40 at the appropriate position of the Eustachian tube; at the same time, an external flushing and suction device can be used to inject and extract liquid from the balloon 511 to achieve the purpose of Eustachian tube balloon dilatation treatment.

[0146] It can be understood that the above embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, the above technical features can be freely combined without departing from the concept of the present invention, and several deformations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should belong to the coverage of the claims of the present invention.

Claims

1. A Eustachian tube inspection and treatment system, characterized in that: It comprises a Eustachian tube endoscope (10), a connecting seat (20), a sheath tube (40), an infusion tube (30), and a balloon stent (50); The Eustachian tube endoscope (10) comprises a handheld portion (11), a mirror tube (12) one end of which is connected to the handheld portion (11), and a lens (13) mounted on an end of the mirror tube (12) away from the handheld portion (11); The connecting seat (20) is detachably connected to one end of the hand-held part (11) and is used for allowing one end of the lens tube (12) having the lens (13) to pass through; The sheath tube (40) is detachably sleeved on the connecting seat (20), and one end of the lens tube (12) having the lens (13) is arranged to pass through the sheath tube (40); One end of the infusion tube (30) is detachably connected to the connection seat (20); when one end of the infusion tube (30) is connected to the connection seat (20), the infusion tube (30) is passed through the sheath tube (40), and one end of the mirror tube (12) having the lens (13) is passed through the infusion tube (30); The balloon support (50) is detachably arranged to pass through the sheath tube (40).

2. The Eustachian tube inspection and treatment system according to claim 1, characterized in that: The lens (13) comprises a lens housing (131), a CMOS camera (133), a light-guiding optical fiber (134) and an electrical connection line (135); the lens housing (131) is a two-end through structure, one end of which is connected to the lens tube (12), and the other end of which is provided with a lens (132); the CMOS camera (133) is arranged in the lens housing (131) and is located on one side of the lens (132); the light-guiding optical fiber (134) is arranged on the periphery of the CMOS camera (133) and is passed through an end of the lens housing (131) away from the CMOS camera (133); the electrical connection line (135) is connected to the CMOS camera (133) and is passed through an end of the lens housing (131) away from the CMOS camera (133).

3. The Eustachian tube inspection and treatment system according to claim 1, characterized in that: The mirror tube (12) comprises a first tube section (121) and a second tube section (122) which are connected to each other; the second tube section (122) is arranged at one end of the first tube section (121) and is bent; the hardness of the first tube section (121) is greater than the hardness of the second tube section (122); The lens (13) is mounted on an end of the second tube section (122) away from the first tube section (121).

4. The Eustachian tube inspection and treatment system according to claim 3, characterized in that: The outer diameter of the first pipe section (121) is between 0.9 and 1.0 mm; and / or, the outer diameter of the second tube section (122) is between 0.9 and 1.0 mm; And / or, the length of the first pipe section (121) is greater than the length of the second pipe section (122).

5. The Eustachian tube inspection and treatment system according to claim 1, characterized in that: The handheld part (11) comprises a first end and a second end arranged opposite to the first end, the first end is connected to the mirror tube (12), and the second end is connected to a plug (14); The handheld portion (11) is provided with a first screw connection structure (117), and the first screw connection structure (117) is located at the first end and is used for connecting to the connecting seat (20).

6. The Eustachian tube inspection and treatment system according to claim 1, characterized in that: The connection seat (20) comprises an infusion tube connection portion (33) (21), a limiting portion (22) arranged on the infusion tube connection portion (33) (21), and an infusion interface (23); the infusion interface (23) is arranged on the limiting portion (22) and is in communication with the infusion tube connection portion (33) (21); One end of the infusion tube connection portion (33) (21) is provided with a first card insertion structure (211), and the first card insertion structure (211) is used for detachably connecting with the infusion tube (30); The other end of the infusion tube connection portion (33) (21) is provided with a second screw connection structure (212), and the second screw connection structure (212) is used for detachably connecting with the handheld portion (11).

7. The Eustachian tube inspection and treatment system according to claim 6, characterized in that: The inner side of the infusion tube connection part (33) (21) is a hollow structure with two ends connected, forming a first channel (213) for the mirror tube (12) to pass through; And / or, the outer side wall of the infusion tube connecting portion (33) (21) is provided with at least one second channel (214), and the second channel (214) is used for guiding the installation of the balloon support (50); And / or, the outer wall of the infusion tube connecting portion (33) (21) is provided with a slide groove (215) that cooperates with the sheath tube (40).

8. The Eustachian tube inspection and treatment system according to claim 1, characterized in that: The infusion tube (30) comprises a main body (31), a guide portion (32) and a connecting portion (33) which are connected to each other; the main body (31) comprises a straight section (311) and a bent section (312) which are connected to each other; one end of the straight section (311) is connected to the connecting portion (33), and the other end is connected to the bent section (312); the hardness of the straight section (311) is greater than the hardness of the bent section (312); the guide portion (32) is arranged at one end of the bent section (312) away from the straight section (311); the connecting portion (33) is provided with a second card insertion structure (331) which is detachably connected to the connecting seat (20).

9. The Eustachian tube inspection and treatment system according to claim 1, characterized in that: The sheath tube (40) comprises a sheath tube main body sleeve (41) and a sheath tube body (42) connected to one end of the sheath tube main body sleeve (41); the sheath tube main body sleeve (41) is a through-type structure at both ends and is in communication with the sheath tube body (42); a sheath tube joint (421) is provided at one end of the sheath tube body (42), and a rotation connection structure (43) is provided on the sheath tube joint (421) and the sheath tube main body sleeve (41); A through groove (413) for the balloon support (50) to pass through is provided at one end of the sheath main sleeve (41) away from the sheath tube body (42); and / or a locking structure (44) that locks with the connecting seat (20) is provided on the side wall of the sheath main sleeve (41).

10. The Eustachian tube inspection and treatment system according to claim 1, characterized in that: The balloon stent (50) comprises a balloon assembly (51), a delivery pipe (52) and a joint structure (53); the balloon assembly (51) is connected to one end of the delivery pipe (52); the joint structure (53) is connected to the other end of the delivery pipe (52) and is detachably disposed outside the sheath tube (40); The balloon assembly (51) comprises a balloon (511), a balloon joint (513), and a connecting pipe (512); the balloon (511) is arranged at one end of the connecting pipe (512); the balloon joint (513) is arranged at the other end of the connecting pipe (512); the connecting pipe (512) comprises an inner channel for the mirror tube (12) to pass through and an outer channel arranged on the outer periphery of the inner channel; the outer channel is in communication with the balloon (511); the balloon joint (513) comprises a first interface, a second interface, and a third interface; the first interface is connected to the connecting pipe (512), the second interface is connected to the delivery pipe (52); and the third interface is connected to the infusion tube (30).

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