Visual eustachian tube examination and treatment device with suction function

Abstract

The visual Eustachian tube examination and treatment device with the suction function comprises an Eustachian tube endoscope, a sheath tube indexing and transposition locking assembly and a balloon assembly, wherein the balloon assembly is arranged between the sheath tube indexing and transposition locking assembly and the Eustachian tube endoscope. The sealing joint assembly of the balloon assembly is installed in the sheath tube indexing transposition locking assembly, the assembly is located outside the human body in the treatment process, the size of the sealing joint assembly can be properly enlarged according to the technological conditions, and the manufacturing difficulty of the balloon assembly is reduced; by changing the length of the sealing joint, the combination of the balloons with different lengths and the same endoscope is realized, and the endoscope is used for treating different patients; according to different relative positions of the treatment ear and the doctor caused by the lying position of the patient, the angle of the sheathing canal and the endoscope is adjusted; the balloon hollow tube is located in the sheath tube and forms a suction channel with the sheath tube, the end of the sheath tube is a suction inlet, and a suction tube externally connected with a negative pressure suction device is arranged on a sealing connector assembly in the balloon assembly, so that the nasal cavity aspirator has the suction function of cleaning hydrops in the nasal cavity.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a visual Eustachian tube inspection and treatment device with a suction function. Background Art

[0002] Eustachian tube dysfunction (ETD) is a common disease in the clinical diagnosis and treatment of otolaryngologists. Typical symptoms include a stuffy feeling in the ear, hazy hearing, ear pain, inability to balance the air pressure in the middle ear, tinnitus, and vertigo. Long-term presence of ETD can cause ear diseases such as tympanic membrane perforation, chronic secretory otitis media, and middle ear cholesteatoma. Due to the special anatomical position of the Eustachian tube, complex pathophysiological mechanisms, and individual differences, the treatment effect of Eustachian tube dysfunction is poor, especially recurrent and persistent ETD, which brings great psychological pressure and economic burden to patients and great challenges to doctors. Balloon dilatation of the Eustachian tube (BDET) is a new method for treating ETD that has been gradually popularized worldwide in recent years. Since its first clinical application in 2010, more than 110 medical institutions in Europe have used this technology. It has been widely promoted and applied worldwide and has achieved good results.

[0003] At present, the Eustachian tube balloon dilatation catheter used in clinical practice at home and abroad does not have a visual function. The balloon needs to be delivered to the near opening of the Eustachian tube under the direct vision of a sinusoscope, and then the balloon is placed into the opening of the Eustachian tube based on the doctor's experience and feel. Before the Eustachian tube balloon dilatation, the patient's nasal mucus needs to be cleaned. Before the operation, a special suction tube is used to clean the nasal mucus. The suction tube structure is a stainless steel tube with a curved head and a suction device connected to the tail. This suction tube has no visual function and needs to be monitored by a sinusoscope to attract the mucus at the nasal cavity and the opening of the Eustachian tube. Since the nasal cavity to the opening of the Eustachian tube is a curved cavity, and the sinusoscope is a hard tube straight rod endoscope, the operation is very inconvenient, the cleaning time is long, and the nasal mucosa is easily damaged.

[0004] Chinese patent, application number 201810350441.2, name "A Eustachian tube inspection and treatment device", is the first generation product developed by the inventor. The device has the ability to visually inspect and treat the Eustachian tube at the same time, but there is no suction channel structure in the device. When cleaning the patient's nasal mucus, a special suction tube is also required. The joint of the balloon assembly is a three-way joint, located in the large hole part of the sheath reducer, which is difficult to install. During inspection and treatment, the joint must enter the human body cavity with the sheath. Due to the limited space of the human body cavity, the sheath cavity cannot be designed to be too large, resulting in a small size design of the three-way joint. The inner tube and outer tube of the balloon hollow tube and the water pipe must be installed inside the joint, resulting in a difficult manufacturing process for the balloon assembly and high manufacturing cost.

[0005] The structure of the existing Eustachian tube inspection and treatment device cannot adapt a single length of endoscope to balloon assemblies of multiple lengths. After the sheath of the device is combined with the endoscope balloon assembly, the sheath elbow and the endoscope balloon assembly cannot be relatively shifted, which cannot meet the requirements of different operating positions for the left and right ears during surgery, does not conform to the doctor's operating habits, makes the operation not smooth, and seriously affects the inspection and treatment efficiency. The device does not have the suction function to clear the nasal fluid and bleeding. During surgery, it still needs to cooperate with other suction tubes to enter the nasal cavity in parallel for suction operations, which increases the space occupied by surgical instruments on the human body and increases the inconvenience of operation. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing Eustachian tube inspection and treatment devices, and to provide a visual Eustachian tube inspection and treatment device with a suction function that has a reasonable design, is easy to assemble, improves treatment efficiency, has a balloon assembly with different working part lengths of the same endoscope and sheath combination, and can take into account the surgical needs of either side of the patient's ear.

[0007] The technical solution adopted to solve the above technical problems is: a visual Eustachian tube inspection and treatment device with suction function, including a Eustachian tube endoscope and a sheath tube indexing and transposition locking assembly, the sheath tube indexing and transposition locking assembly is provided with a Eustachian tube endoscope, the Eustachian tube endoscope includes a soft segment of the mirror body, a hard segment of the mirror body, a mirror body fixing sleeve, and an eyepiece and a light guide interface assembly, the soft segment of the mirror body and the hard segment of the mirror body are an integrated structure, the eyepiece and the light guide interface assembly are installed at the end of the hard segment of the mirror body, and the mirror body fixing sleeve is arranged on the hard segment of the mirror body and is fixedly connected to the eyepiece and the light guide interface assembly; a balloon assembly is arranged between the Eustachian tube endoscope and the sheath tube indexing transposition locking assembly, the structure of the balloon assembly is that the head of the balloon hollow tube is provided with a balloon, and the tail is provided with a sealing joint assembly, the balloon hollow tube is composed of an inner catheter and an outer catheter, a fluid channel connected to the balloon is formed between the inner catheter and the outer catheter, a suction tube, a fluid sealing cavity, and a flushing pipe are arranged on the sealing joint assembly, and the flushing pipe is connected to the balloon through the fluid sealing cavity and the fluid channel;

[0008] The structure of the sheath tube indexing transposition locking assembly is that a polyhedron indexing transposition locking mechanism is arranged at the tail end of the sheath tube, and a T-shaped locking guide through groove f is arranged on the side wall of the tail of the polyhedron indexing transposition locking mechanism; the sheath tube is composed of a straight section, a curved section and an end connected in sequence;

[0009] The balloon hollow tube is located in the sheath tube and forms a suction channel with the sheath tube, the end of the sheath tube is the suction inlet, the sealing joint assembly is located in the polyhedron indexing transposition locking mechanism and forms a suction channel sealing cavity with the polyhedron indexing transposition locking mechanism, and the suction tube is connected with the suction inlet through the suction channel sealing cavity and the suction channel;

[0010] The soft section of the scope is located in the inner catheter and at the curved section of the sheath, and the hard section of the scope is located in the inner catheter and at the straight section of the sheath and in the polyhedron indexing and transposition locking mechanism; a locking guide mechanism is provided on the scope fixing sleeve, and the locking guide mechanism and the T-shaped locking guide groove f are used to lock the Eustachian tube endoscope and enable the Eustachian tube endoscope to move forward and backward along the axial direction of the sheath.

[0011] As a preferred technical solution, the balloon hollow tube is a reducer composed of a small-diameter tube segment, a tapered tube segment, and a large-diameter tube segment connected in sequence. The difference between the inner diameter of the outer catheter and the outer diameter of the inner catheter is equal in each tube segment. The small-diameter tube segment of the inner catheter cooperates with the soft segment of the scope, the tapered tube segment is used for positioning the scope, and the large-diameter tube segment cooperates with the hard segment of the scope.

[0012] As a preferred technical solution, the sealing joint assembly includes a piston sleeve, a sealing joint, and a main joint. The inner catheter at the tail of the balloon hollow tube extends out of the outer catheter by a certain length. The piston sleeve and the sealing joint are sequentially sleeved on the outer catheter at the tail of the balloon hollow tube, and the piston sleeve is sleeved on the sealing joint. The main joint is sleeved on the inner catheter at the tail end of the balloon hollow tube and is connected to the sealing joint. The axially machined groove on the end face of one end where the main joint is connected to the sealing joint forms a fluid sealing cavity with the end face of the sealing joint. The end of the outer catheter at the tail of the balloon hollow tube is located in the fluid sealing cavity, so that the fluid sealing cavity is connected to the fluid channel of the balloon hollow tube. A flushing pipe connected to the fluid sealing cavity is axially arranged on the main joint.

[0013] As a preferred technical solution, the side wall of the main joint is processed with an anti-detachment hook in a suspended state, the anti-detachment hook is a connecting rod with a hook body processed at the end, and the inner surface of the middle part of the connecting rod is processed with a groove for destroying the shape; the anti-detachment hook is hooked on the mirror body fixing sleeve to fix the balloon assembly to the Eustachian tube endoscope.

[0014] As a preferred technical solution, an elastic sleeve is mounted on the outside of the flushing pipe, and the elastic sleeve is mounted in a slot on the side of the mirror body fixing sleeve.

[0015] As a preferred technical solution, the polyhedron indexing transposition locking mechanism is as follows: the front end of the polyhedron sleeve is covered with a sheath tube connector, and the rear end is covered with a universal connector. The outer wall of the polyhedron sleeve is processed with 6 to 16 even-numbered locking indexing teeth and indexing planes distributed uniformly along the circumferential direction. The number of locking indexing teeth is equal to the number of indexing planes. The median vertical plane between two adjacent locking indexing teeth coincides with the axial median vertical plane of the corresponding indexing plane. The front end surface of the universal connector is axially processed with a card slot to form two A symmetrical positioning plane, the two positioning planes are fitted on any pair of symmetrical indexing planes, the locking indexing teeth and the front end of the universal joint are covered with a locking cap, the front end surface of the locking cap is processed with an even number of uniformly distributed teeth ranging from 6 to 16, there is an arc-shaped tooth groove between two adjacent teeth, the number of teeth is equal to the number of locking indexing teeth, the tooth groove width on the locking cap is greater than the width of the locking indexing teeth, a pin is arranged on the locking cap, and a locking slide groove with a spiral rise angle is arranged on the outer side wall of the front end of the universal joint, and one end of the pin is located in the slide groove.

[0016] As a preferred technical solution, the locking guide mechanism is: a locking screw is threadedly connected to the outer wall of the mirror body fixing sleeve, and the locking screw consists of a threaded section, a cylindrical section, a cylindrical locking section, and a connecting rod from bottom to top, and a locking plate bar is fixedly connected to the upper end of the connecting rod. A T-shaped locking guide groove f is axially processed on the side wall of the universal joint, and the threaded section of the locking screw passes through the T-shaped locking guide groove f, so that the lower end surface of the cylindrical locking section of the locking screw is located on the step surface of the T-shaped locking guide groove f; a scale line is axially processed on the outer wall of the mirror body fixing sleeve, which is based on the rear end face of the universal joint and indicates the depth of insertion of the front end of the mirror body soft segment and the front end of the balloon into the Eustachian tube.

[0017] As a preferred technical solution, the sheath tube is composed of an inner tube and an outer tube sleeve, the outer tube is a straight tube with a front end processed into a tapered structure, the front end of the inner tube extends out of the front end of the outer tube and is connected to the end head, a section of the inner tube close to the front end is curved, and the remaining part is a straight tube, the rear end of the outer tube is connected to the sheath tube joint, the inner hole at the rear end of the inner tube has the same aperture as the small end hole of the tapered hole of the sheath tube joint; the outer side wall of the sheath tube is axially processed with a scale line starting from the front end face of the end head for marking the insertion depth of the nasal cavity.

[0018] As a preferred technical solution, the end head has a cylindrical shape, and a combination of through holes concentric and eccentric with the cylinder are machined along the axial direction at the center of the cylinder. The combination of through holes are, from front end to rear end, an eccentric tapered hole a with the large end facing forward, an eccentric cylindrical hole b, a concentric tapered hole c with the small end facing forward, and a concentric cylindrical hole d. The center lines of the eccentric tapered hole a and the eccentric cylindrical hole b coincide, and the concentric cylindrical hole d is a sheath tube mounting hole.

[0019] As a preferred technical solution, the large end diameter of the eccentric cone hole a is smaller than the large end diameter of the concentric cone hole c and smaller than the diameter of the concentric cylindrical hole d, and the large end diameter of the concentric cone hole c is equal to the inner diameter of the sheath tube.

[0020] The beneficial effects of the present invention are as follows:

[0021] The present invention arranges the balloon sealing joint assembly at the inner hole of the sheath polyhedron indexing and transposing locking mechanism, which does not enter the human body and has a relatively large space. Therefore, the size of the sealing joint assembly can be appropriately enlarged according to the process conditions, which greatly reduces the difficulty of the manufacturing process and the assembly difficulty, and reduces the cost. The present invention realizes the combination of balloons of different lengths with the same endoscope and sheath by changing the length of the sealing joint, which can be used for the treatment of different patients.

[0022] The hollow tube of the balloon of the present invention is located in the sheath tube and forms a suction channel with the sheath tube. The end of the sheath tube is the suction inlet. A suction tube is arranged on the sealing joint assembly in the balloon assembly. The suction tube is used for an external negative pressure suction device, which increases the suction function of the present invention. The effusion and bleeding in the nasal cavity and Eustachian tube can be synchronously attracted at any time during the operation. There is no need for the parallel intervention of a separate suction tube, which reduces the space occupied by surgical instruments in the patient's cavity and the complexity of the operation. The visualized endoscope can realize inspection and treatment at the same time, which saves operation time, reduces the difficulty of surgical operation and improves the efficiency of the operation. The present invention designs a balloon anti-detachment hook structure, which can ensure that the balloon will not detach from the endoscope when it is retreated. At the same time, the anti-detachment hook must be destroyed before it can be separated during separation, and it also plays a self-destruction function after the balloon is used once, which can effectively prevent the secondary use of the balloon and conforms to the safety risk management concept of medical devices.

[0023] The present invention designs both the inner catheter and the outer catheter of the balloon as a reducer structure, which makes it easier for the endoscope to cooperate with the inner hole of the balloon, and the endoscope has a stronger axial support force for the balloon, thereby preventing the balloon from retracting when being pushed into the Eustachian tube, and at the same time, the risk of the endoscope being broken is reduced; the present invention adds a scale mark on the sheath tube for indicating the depth of the sheath tube inserted into the nasal cavity, thereby providing a visual mark for the doctor as to the depth of the sheath tube entering the nasal cavity during surgery; the present invention adds a mark on the fixed sleeve of the scope body for indicating the moving distance of the endoscope relative to the sheath tube, thereby providing a visual mark for the depth of the balloon part and the soft segment of the endoscope entering the Eustachian tube during surgery.

[0024] The polyhedral transposition locking mechanism of the present invention enables the sheath to have a reversing function independently, solving the technical problem in the prior art that the curved portion of the sheath cannot be reversed relative to the endoscope body and the patient's different ear sides during surgery, thereby reducing the difficulty of inspection and treatment operations and improving inspection and treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1It is an appearance diagram of the visual Eustachian tube inspection and treatment device with suction function of the present invention.

[0026] Figure 2 It is a schematic diagram of the internal structure of the visual Eustachian tube inspection and treatment device with suction function of the present invention.

[0027] Figure 3 It is a schematic diagram of the liquid suction passage of the visual Eustachian tube inspection and treatment device with suction function of the present invention.

[0028] Figure 4 1 is an appearance diagram of the balloon assembly of the present invention.

[0029] Figure 5 yes Figure 4 AA section view.

[0030] Figure 6 It is a schematic structural diagram of the balloon hollow tube and the balloon of the present invention.

[0031] Figure 7 yes Figure 5 A magnified schematic diagram of the local M in the figure.

[0032] Figure 8 yes Figure 7 BB cross-sectional view.

[0033] Fig. 9 It is a structural schematic diagram of the sheath tube indexing, transposition and locking assembly of the present invention.

[0034] Fig.10 It is a structural schematic diagram of the polyhedron indexing transposition locking mechanism 5 of the present invention.

[0035] Fig.11 yes Fig.10 Schematic diagram of the connection between the middle polyhedral sleeve 54, the sheath connector 51, and the universal connector 53.

[0036] Fig.12 yes Fig.10 Left view of .

[0037] Fig.13 It is a structural schematic diagram of terminal 1.

[0038] Wherein: end 1, eccentric cone hole a, eccentric cylindrical hole b, concentric cone hole c, concentric cylindrical hole d, mirror body soft section 2, sheath tube 3, inner tube 31, outer tube 32, mirror body hard section 4, polyhedron indexing transposition locking mechanism 5, sheath tube joint 51, locking cap 52, universal joint 53, positioning plane 531, locking slide groove 532, polyhedron sleeve 54, locking indexing tooth 541, indexing plane 542, pin 55, guide groove f, mirror body fixing sleeve 6. Eyepiece and light guide beam interface assembly 7, sealing joint assembly 8, main joint 81, sealing joint 82, piston sleeve 83, anti-detachment hook 84, fluid sealing chamber 85, balloon hollow tube 9, inner catheter 91, outer catheter 92, fluid channel 93, suction channel sealing chamber 10, locking guide mechanism 11, locking plate lever 111, locking screw 112, suction tube 12, flushing tube 13, elastic sleeve 131, suction channel 14, balloon 15. DETAILED DESCRIPTION

[0039] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples, but the present invention is not limited to the following embodiments.

[0040] exist Figures 1 to 3 In this embodiment, the visual Eustachian tube inspection and treatment device with suction function includes a Eustachian tube endoscope, a sheath indexing and transposition locking assembly, and a balloon assembly. The balloon assembly is installed in the sheath indexing and transposition locking assembly, and the Eustachian tube endoscope is installed in the balloon assembly.

[0041] The sheath tube indexing and transposition locking assembly comprises a sheath tube 3 and a polyhedron indexing and transposition locking mechanism 5. Fig. 9 A polyhedron indexing transposition locking mechanism 5 is installed at the tail end of the sheath tube 3, and a T-shaped locking guide through groove f is arranged on the side wall of the tail of the polyhedron indexing transposition locking mechanism 5; the sheath tube 3 includes a straight section, a curved section and a terminal 1, and the sheath tube 3 is composed of an inner tube 31 and an outer tube 32, the outer tube 32 is a straight tube with a front end processed into a conical structure, the front end of the inner tube 31 extends out of the front end of the outer tube 32 and is connected to the terminal 1, a section of the inner tube 31 close to the front end is curved, and the remaining part is a straight tube, and a scale line for marking the insertion depth of the nasal cavity is axially processed on the outer wall of the sheath tube 3 with the front end face of the terminal 1 as the starting point.

[0042] The Eustachian tube endoscope comprises a soft mirror segment 2, a hard mirror segment 4, a mirror fixing sleeve 6, and an eyepiece and a light guide interface assembly 7. The soft mirror segment 2 and the hard mirror segment 4 are an integral structure. The eyepiece and the light guide interface assembly 7 are installed at the end of the hard mirror segment 4. The mirror fixing sleeve 6 is sleeved on the hard mirror segment 4 and is fixedly connected with the eyepiece and the light guide interface assembly 7. The Eustachian tube endoscope of this embodiment is a prior art. The present invention only improves the mirror fixing sleeve 6. Specifically, a locking guide mechanism 11 and a scale line used in conjunction with a T-shaped locking guide through groove f are installed on one side of the mirror fixing sleeve 6. The locking guide mechanism 11 and the T-shaped locking guide through groove f are used to lock the Eustachian tube endoscope and enable the Eustachian tube endoscope to move forward and backward along the axial direction of the sheath. The front end of the mirror fixing sleeve 6 is processed with a hook groove, and the side axial direction is also processed with a suction tube installation groove and a flushing pipe installation groove.

[0043] exist Figures 3 to 8 In the embodiment, the balloon assembly includes a balloon 15, a balloon hollow tube 9, and a sealing joint assembly 8. The head of the balloon hollow tube 9 is processed with the balloon 15, and the tail is installed with the sealing joint assembly 8. The balloon hollow tube 9 is located in the sheath tube 3 and forms a suction channel 14 with the sheath tube 3. The hollow interlayer formed by the end 1 of the sheath tube 3 and the balloon 15 is a suction inlet. The sealing joint assembly 8 is located in the polyhedron indexing transposition locking mechanism 5 and forms a suction channel sealing cavity 10 with the polyhedron indexing transposition locking mechanism 5. A suction tube 12 is axially installed on one side of the balloon hollow tube 9 on the sealing joint assembly 8. The tail end of the suction tube 12 is connected to an aspirator joint. The suction tube 12 is connected with the suction inlet through the suction channel sealing cavity 10 and the suction channel 14; the balloon hollow tube 9 is composed of an inner catheter 91 and an outer catheter 92, and a fluid channel 93 connected with the balloon 15 is formed between the inner catheter 91 and the outer catheter 92. The balloon hollow tube 9 is also a reducer which is sequentially connected by a small-diameter tube section, a conical tube section, and a large-diameter tube section. The difference between the inner diameter of the outer catheter 92 and the outer diameter of the inner catheter 91 is equal in each tube section. The soft segment 2 of the mirror body is located in the small-diameter tube section of the inner catheter 91 and is also located in the curved section of the sheath tube 3. The hard segment 4 of the mirror body is located in the large-diameter tube section of the inner catheter 91 and is also located in the straight section of the sheath tube 3 and the polyhedron indexing transposition locking mechanism 5.

[0044] The sealing joint assembly 8 includes a piston sleeve 83, a sealing joint 82, and a main joint 81. The inner catheter 91 at the tail of the balloon hollow tube 9 extends out of the outer catheter 92 by a certain length. The piston sleeve 83 and the sealing joint 82 are sequentially sleeved on the outer catheter 92 at the tail of the balloon hollow tube 9, and the piston sleeve 83 is sleeved on the sealing joint 82. The main joint 81 is sleeved on the inner catheter 91 at the tail end of the balloon hollow tube 9 and is connected to the sealing joint 82. The axially processed groove on the end face of the main joint 81 connected to the sealing joint 82 is connected to the sealing joint 82. A fluid sealing cavity 85 is formed on the end face of the joint 82, and the end of the outer catheter 92 at the tail of the balloon hollow tube 9 is located in the fluid sealing cavity 85, so that the fluid sealing cavity 85 is connected with the fluid channel 93 of the balloon hollow tube 9, and a flushing pipe 13 connected with the fluid sealing cavity 85 is axially installed on the main joint 81, and an elastic sleeve 131 is sleeved on the rear section of the flushing pipe 13, and the elastic sleeve 131 is clamped in the flushing pipe installation groove of the mirror body fixing sleeve 6; a pressure pump connector is installed at the tail end of the flushing pipe 13 and the elastic sleeve 131.

[0045] The side wall of the main joint 81 is processed with an anti-detachment hook 84 in a suspended state. The anti-detachment hook 84 is a hook body processed at the end of the connecting rod, and the end of the hook body is processed with an inclined surface. The inner surface of the middle part of the connecting rod is processed with a groove for the balloon to be destroyed. The groove is a triangular groove or an arc groove. The front end of the mirror body fixing sleeve 6 is processed with an inclined surface that matches the end of the anti-detachment hook 84. The balloon assembly is installed on the Eustachian tube endoscope, and the hook body of the anti-detachment hook 84 is axially slid and clamped in the hook groove of the mirror body fixing sleeve 6 through the inclined surface, so that the balloon assembly is fixedly connected to the Eustachian tube endoscope. The anti-detachment hook 84 of the present invention has a self-destruction function. When the balloon assembly is used once and the connection between the balloon assembly and the Eustachian tube endoscope is released, as long as the groove of the connecting rod of the anti-detachment hook 84 is pressed, the anti-detachment hook 84 will break and fail, which can effectively prevent the secondary use of the balloon assembly.

[0046] exist Figures 10-12 In the figure, the polyhedron indexing and transposition locking mechanism 5 includes a polyhedron sleeve 54, a sheath tube joint 51, a universal joint 53, a locking cap 52, and a pin 55. The front end of the polyhedron sleeve 54 is covered with the sheath tube joint 51, and the rear end is covered with the universal joint 53. The sheath tube joint 51 is fixedly connected to the outer tube 32 of the sheath tube 3. The inner hole at the rear end of the inner tube 31 of the sheath tube 3 is the same as the small end hole of the tapered hole of the sheath tube joint 51, ensuring that the whole composed of the balloon assembly and the scope body can enter smoothly without jamming.

[0047] The outer wall of the polyhedron sleeve 54 is processed in the circumferential direction with an even number of 6 to 16 uniformly distributed locking indexing teeth 541 and an even number of 6 to 16 indexing planes 542. The number of the locking indexing teeth 541 is equal to the number of the indexing planes 542, and there are 8 of them in this embodiment. The upper surface of the locking indexing teeth 541 is a convex arc surface, and the space between two adjacent teeth is a concave arc surface. The median vertical plane of the concave arc surface between two adjacent locking indexing teeth 541 coincides with the axial median vertical plane of the corresponding indexing plane 542; the front end surface is axially processed with a groove to form two symmetrical positioning planes 531, and the two positioning planes 531 are fitted on any pair of symmetrical indexing planes 542. The locking indexing teeth 541 and the front end of the universal joint 53 are covered with a locking cap 52. The front end surface of the locking cap 52 is circumferentially processed with an even number of 6 to 16 uniformly distributed teeth, and there is an arc-shaped tooth groove between two adjacent teeth. The number of teeth on the locking cap 52 is equal to that of the locking indexing teeth 541, and the width of the tooth grooves on the locking cap 52 is greater than the width of the locking indexing teeth 541. When the locking cap 52 is rotated counterclockwise to the stop position, the eight tooth grooves on the locking cap 52 of this embodiment are opposite to the eight locking indexing teeth 541, and the eight-sided indexing plane 542 of the polyhedron sleeve 54 can be axially inserted into the universal joint 53 and fit with the two positioning planes 531. Then the locking cap 52 is rotated clockwise, and the eight teeth on the locking cap 52 coincide with the eight locking indexing teeth 541 for compression and locking. The locking cap 52 is rotated counterclockwise to the stop position, and the polyhedron sleeve 54 can be axially pulled out and separated from the two positioning planes 531 of the universal joint 53; a pin 55 is provided on the locking cap 52, and a locking groove 532 of equal depth with a helical rise angle is also provided on the outer diameter of the front end of the universal joint 53, and one end of the pin 55 is located in the locking groove 532. The locking cap 52 is rotated, and the pin 55 slides along the spiral surface of the slide groove 532 . The inclined surface of the spiral groove pushes the pin 55 to move axially, driving the locking cap 52 to move axially, thereby tightening or loosening the polyhedral sleeve 54 .

[0048] The locking guide mechanism 11 includes a T-shaped locking guide slot f, a locking plate bar 111, and a locking screw 112. The side wall of the universal joint 53 is axially processed with a T-shaped locking guide slot f. The outer wall of the mirror body fixing sleeve 6 is threadedly connected with a locking screw 112. The locking screw 112 is composed of a threaded section, a cylindrical section, a cylindrical locking section, and a connecting rod from bottom to top. The upper end of the connecting rod is fixedly connected with a locking plate bar 111. The threaded section and the cylindrical section of the locking screw 112 pass through the T-shaped locking guide slot f, so that the lower part of the cylindrical locking section is The end face is located on the step surface of the guide groove f, and the outer side wall of the mirror body fixing sleeve 6 is axially processed with scale lines indicating the depth of the front end of the mirror body soft segment and the front end of the balloon inserted into the Eustachian tube, which is based on the rear end face of the universal joint 53. The scale lines are used for the doctor to accurately grasp the depth of the balloon and the mirror body inserted into the Eustachian tube. When the balloon mirror body reaches the treatment position, the locking plate lever 111 is moved, and the locking screw 112 is tightened to press the end face of the cylindrical locking segment tightly against the step surface of the guide groove f, and the Eustachian tube endoscope and the sheath tube indexing and transposition locking assembly are fixed.

[0049] exist Fig.13 In the embodiment, the end cap 1 has a cylindrical structure, and a combination through hole is processed along the axial direction at the center of the cylinder, which is concentric and eccentric with the cylinder. The combination through holes are, from the front end to the rear end, an eccentric tapered hole a with the large end facing forward, an eccentric cylindrical hole b, a concentric tapered hole c with the small end facing forward, and a concentric cylindrical hole d. The large end aperture of the eccentric tapered hole a is less than the large end aperture of the concentric tapered hole c, which is less than the aperture of the concentric cylindrical hole d. The center lines of the eccentric tapered hole a and the eccentric cylindrical hole b coincide. The concentric cylindrical hole d is a sheath mounting hole. The end cap 1 is mounted on the head of the inner tube 31 of the sheath 3. The head of the inner tube 31 is connected to the concentric hole d. The large end aperture of the concentric tapered hole c is equal to the inner diameter of the sheath 31. When the scope body and the balloon assembly are assembled with the sheath tube 3, the soft segment 2 of the scope body has resilience when the curved segment of the sheath tube 3 is passively bent, forcing the scope body and the balloon assembly to cling to the outer wall of the inner hole of the curved segment of the sheath tube 3 in the bending direction, thereby causing the ends of the scope body and the balloon assembly to deviate from the center position of the end of the sheath tube 3. The combined through-hole structure that is concentric and eccentric with the cylinder is arranged inside the end 1 of the present invention to correct the bending angles of the scope body and the balloon end, so that the soft segment end of the scope body and the balloon end reach the designed center position.

[0050] The working principle of the present invention is as follows:

[0051] The present invention integrates inspection and treatment, and has the suction function of clearing the effusion and bleeding in the nasal cavity and Eustachian tube, and can take into account the inspection and treatment of the left and right ears of the patient. The same endoscope can be combined with balloons of different lengths. When in use, the Eustachian tube endoscope is installed in the balloon assembly, and the anti-detachment hook 84 on the side wall of the main joint 81 of the balloon assembly is clamped in the hook groove on the mirror body fixing sleeve 6, so that the balloon assembly and the Eustachian tube endoscope are fixedly connected, and then the connecting assembly formed by the balloon assembly and the Eustachian tube endoscope is installed in the sheath tube indexing transposition locking assembly, and fixed in the guide groove f on the universal joint 53 by the locking screw 112, so that the Eustachian tube endoscope and the sheath tube indexing transposition locking assembly are fixed; when using the suction function, the suction device joint at the tail end of the suction tube 12 is connected to the negative pressure suction device, and the sheath tube The side gap formed by the end 1 of the sheath 3 and the balloon portion is used as a suction port to suck the mucus and bleeding in the human body tube into the suction channel 14, and then enter the suction device through the suction channel sealing cavity 10 and the suction tube 12 in turn; when performing inspection and treatment, the locking plate lever 111 is moved to loosen the locking screw 112, and the connecting assembly consisting of the balloon assembly and the Eustachian tube endoscope is pushed forward, so that the balloon 15 and the head of the mirror body are extended out of the end 1 of the sheath tube 3 and enter the Eustachian tube, and the inspection is performed through the Eustachian tube endoscope. When performing treatment, the flushing pipe 13 is connected to the pressure pump through the pressure pump connector, and the pressure pump drives water into the flushing pipe 13. The water flows from the flushing pipe 13 through the fluid sealing cavity 85 and the fluid channel 93 in the balloon hollow tube 9 in turn into the balloon 15, and the balloon 15 is used to dilate the Eustachian tube for treatment.

[0052] Before the operation, before the endoscope and the balloon assembly are installed in the sheath indexing and transposition locking assembly, the position of the sheath is adjusted through the polyhedron transposition locking mechanism 5 according to the different body positions of the patient's left ear or right ear, so that the angle of the front end of the sheath conforms to the body position. The specific operation is as follows: loosen the locking cap 52, withdraw the polyhedron sleeve 54 connecting the sheath from the universal joint 53, rotate the polyhedron sleeve 54 connecting the sheath to a suitable angle, insert the polyhedron sleeve 54 connecting the sheath into the card slot of the universal joint 53 so that the corresponding other two indexing planes 542 and the two symmetrical positioning planes 531 are in contact, and then rotate the locking cap 52 to press the polyhedron sleeve 54 to complete the angle transposition to meet the inspection and treatment of the ear side away from the doctor or the ear side close to the operator.

Claims

1. A visual Eustachian tube inspection and treatment device with suction function, comprising a Eustachian tube endoscope and a sheath tube indexing and transposition locking assembly, wherein the Eustachian tube endoscope is arranged in the sheath tube indexing and transposition locking assembly, the Eustachian tube endoscope comprises a mirror body soft section (2), a mirror body hard section (4), a mirror body fixing sleeve (6) and an eyepiece and a light guide interface assembly (7), the mirror body soft section (2) and the mirror body hard section (4) are an integral structure, the eyepiece and the light guide interface assembly (7) are installed at the end of the mirror body hard section (4), the mirror body fixing sleeve (6) is arranged on the mirror body hard section (4) and is fixedly connected to the eyepiece and the light guide interface assembly (7); characterized in that: A balloon assembly is arranged between the Eustachian tube endoscope and the sheath tube indexing and transposition locking assembly. The structure of the balloon assembly is that a balloon (15) is arranged at the head of the balloon hollow tube (9), and a sealing joint assembly (8) is arranged at the tail. The balloon hollow tube (9) is composed of an inner catheter (91) and an outer catheter (92). A fluid channel (93) connected to the balloon (15) is formed between the inner catheter (91) and the outer catheter (92). A suction tube (12), a fluid sealing cavity (85), and a flushing tube (13) are arranged on the sealing joint assembly (8). The flushing tube (13) is connected to the balloon (15) through the fluid sealing cavity (85) and the fluid channel (93). The structure of the sheath tube indexing transposition locking assembly is that a polyhedron indexing transposition locking mechanism (5) is arranged at the tail end of the sheath tube (3), and a T-shaped locking guide through groove f is arranged on the side wall of the tail of the polyhedron indexing transposition locking mechanism (5); the sheath tube (3) is composed of a straight section, a curved section, and an end (1) connected in sequence; The balloon hollow tube (9) is located in the sheath tube (3) and forms a suction channel (14) with the sheath tube (3); the end (1) of the sheath tube (3) is a suction inlet; the sealing joint assembly (8) is located in the polyhedron indexing transposition locking mechanism (5) and forms a suction channel sealing cavity (10) with the polyhedron indexing transposition locking mechanism (5); the suction tube (12) is connected to the suction inlet through the suction channel sealing cavity (10) and the suction channel (14); The soft section (2) of the scope is located in the inner catheter (91) and at the same time in the curved section of the sheath (3); the hard section (4) of the scope is located in the inner catheter (91) and at the same time in the straight section of the sheath (3) and in the polyhedron indexing and transposition locking mechanism (5); a locking guide mechanism (11) is provided on the scope fixing sleeve (6); the locking guide mechanism (11) and the T-shaped locking guide through groove f are used to lock the Eustachian tube endoscope and enable the Eustachian tube endoscope to move forward and backward along the axial direction of the sheath.

2. The visual Eustachian tube inspection and treatment device with suction function according to claim 1, characterized in that: The balloon hollow tube (9) is a reducer tube composed of a small diameter tube section, a tapered tube section, and a large diameter tube section connected in sequence. The difference between the inner diameter of the outer catheter (92) and the outer diameter of the inner catheter (91) is equal in each tube section. The small diameter tube section of the inner catheter (91) cooperates with the soft section (2) of the scope, the tapered tube section is used for positioning the scope, and the large diameter tube section cooperates with the hard section (4) of the scope.

3. The visual Eustachian tube inspection and treatment device with suction function according to claim 1, characterized in that: The sealing joint assembly (8) comprises a piston sleeve (83), a sealing joint (82), and a main joint (81). The inner catheter (91) at the tail end of the balloon hollow tube (9) extends out of the outer catheter (92) by a certain length. The piston sleeve (83) and the sealing joint (82) are sequentially sleeved on the outer catheter (92) at the tail end of the balloon hollow tube (9), and the piston sleeve (83) is sleeved on the sealing joint (82). The main joint (81) is sleeved on the inner catheter (91) at the tail end of the balloon hollow tube (9) and is connected to the sealing joint. The main joint (81) is connected to the sealing joint (82); a groove axially processed on the end surface of one end where the main joint (81) is connected to the sealing joint (82) forms a fluid sealing cavity (85) with the end surface of the sealing joint (82); the end of the outer catheter (92) at the tail of the balloon hollow tube (9) is located in the fluid sealing cavity (85), so that the fluid sealing cavity (85) is connected to the fluid channel (93) of the balloon hollow tube (9); and a flushing pipe (13) connected to the fluid sealing cavity (85) is axially arranged on the main joint (81).

4. The visual Eustachian tube inspection and treatment device with suction function according to claim 3, characterized in that: The side wall of the main joint (81) is processed with an anti-detachment hook (84) in a suspended state, the anti-detachment hook (84) is a connecting rod end with a hook body, and the inner surface of the middle of the connecting rod is processed with a groove for destroying the shape; the anti-detachment hook (84) is hooked on the mirror body fixing sleeve (6), so that the balloon assembly is fixedly connected to the Eustachian tube endoscope.

5. The visual Eustachian tube inspection and treatment device with suction function according to claim 1, characterized in that: The flushing pipe (13) is externally sleeved with an elastic sleeve (131), and the elastic sleeve (131) is clamped in a clamping groove on the side of the mirror body fixing sleeve (6).

6. The visual Eustachian tube inspection and treatment device with suction function according to claim 1, characterized in that: The polyhedral indexing transposition locking mechanism (5) comprises: a sheath tube connector (51) is sleeved on the front end of a polyhedral sleeve (54), and a universal connector (53) is sleeved on the rear end; an even number of locking indexing teeth (541) and indexing planes (542) uniformly distributed in the range of 6 to 16 are processed on the outer wall of the polyhedral sleeve (54) along the circumferential direction; the number of the locking indexing teeth (541) is equal to the number of the indexing planes (542); the mid-vertical plane between two adjacent locking indexing teeth (541) coincides with the axial mid-vertical plane of the corresponding indexing plane (542); the front end surface of the universal connector (53) is axially processed with a slot to form two symmetrical positioning planes (531); the two The positioning plane (531) fits on any pair of symmetrical indexing planes (542); the locking indexing teeth (541) and the front end of the universal joint (53) are provided with a locking cap (52); the front end surface of the locking cap (52) is processed with an even number of teeth evenly distributed from 6 to 16; there is an arc-shaped tooth groove between two adjacent teeth; the number of teeth is equal to the number of the locking indexing teeth (541); the tooth groove width on the locking cap (52) is greater than the width of the locking indexing teeth (541); a pin (55) is provided on the locking cap (52); a locking slide groove (532) with a helical angle is provided on the outer side wall of the front end of the universal joint (53); one end of the pin (55) is located in the slide groove (532).

7. The visual Eustachian tube inspection and treatment device with suction function according to claim 6, characterized in that: The locking guide mechanism (11) comprises: a locking screw (112) is threadedly connected on the outer wall of the mirror body fixing sleeve (6); the locking screw (112) is composed of a threaded section, a cylindrical section, a cylindrical locking section, and a connecting rod from bottom to top; the upper end of the connecting rod is fixedly connected to a locking plate bar (111); a T-shaped locking guide through groove f is axially processed on the side wall of the universal joint (53); the threaded section of the locking screw (112) passes through the T-shaped locking guide through groove f, so that the lower end surface of the cylindrical locking section of the locking screw is located on the step surface of the T-shaped locking guide through groove f; and a scale line is axially processed on the outer wall of the mirror body fixing sleeve (6), which is based on the rear end surface of the universal joint (53) and indicates the depth of insertion of the front end of the mirror body soft section and the front end of the balloon into the Eustachian tube.

8. The visual Eustachian tube inspection and treatment device with suction function according to claim 1, characterized in that: The sheath tube (3) is composed of an inner tube (31) and an outer tube (32) which are put together. The outer tube (32) is a straight tube with a front end processed into a tapered structure. The front end of the inner tube (31) extends out of the front end of the outer tube (32) and is connected to the end head (1). A section of the inner tube (31) close to the front end is curved, and the remaining part is a straight tube. The rear end of the outer tube (32) is connected to the sheath tube joint (51). The inner hole at the rear end of the inner tube (31) has the same diameter as the small end hole of the tapered hole of the sheath tube joint (51). The outer wall of the sheath tube (3) is axially processed with a scale line starting from the front end surface of the end head (1) for marking the insertion depth of the nasal cavity.

9. The visual Eustachian tube inspection and treatment device with suction function according to claim 8, characterized in that: The end head (1) has a cylindrical shape, and a combination through hole is processed along the axial direction at the center of the cylinder, which is concentric and eccentric with the cylinder. The combination through hole is, from the front end to the rear end, an eccentric cone hole a with a large end facing forward, an eccentric cylindrical hole b, a concentric cone hole c with a small end facing forward, and a concentric cylindrical hole d. The center lines of the eccentric cone hole a and the eccentric cylindrical hole b coincide, and the concentric cylindrical hole d is a sheath tube mounting hole.

10. The visual Eustachian tube inspection and treatment device with suction function according to claim 9, characterized in that: The large end aperture of the eccentric cone hole a is smaller than the large end aperture of the concentric cone hole c and smaller than the aperture of the concentric cylindrical hole d, and the large end aperture of the concentric cone hole c is equal to the inner diameter of the sheath tube (31).

Images