Drum sinus flusher

Abstract

The utility model discloses a tympanic sinus flusher which comprises an outer tube, an inner tube and a water supply device, the front end of the outer tube is bent to form a bent tube section, the included angle alpha between the axis OA of the tube opening position of the bent tube section and the center line OB of the outer tube is 90-180 degrees, the width d of the bent tube section is 2-10mm, the inner tube is located in the outer tube, and the water supply device is located in the inner tube. The front end of the inner pipe extends into the bent pipe section and is flush with a pipe opening in the bent pipe section or exposed out of the pipe opening, the rear end of the inner pipe is exposed out of the rear end of the outer pipe in the axial direction, a water outlet of the water supply device is communicated with the rear end of the inner pipe, and a limiting stopper used for limiting the inner pipe to move towards the inside of the outer pipe in the axial direction is arranged between the outer pipe and the inner pipe. The utility model provides a tympanic sinus flusher. The tympanic sinus flusher can be used for flushing the tympanic sinus position in a middle ear through an external auditory canal of a patient.

Description

Technical Field

[0001] This utility model relates to the technical field of medical irrigation devices, specifically a tympanic cavity irrigation device. Background Technology

[0002] The middle ear contains a part called the mastoid antrum, located at the junction of the mastoid cavity and the epitympanic cavity. In some otological surgeries involving the mastoid antrum, it is desirable to remove cholesterol crystals or secretions from the mastoid antrum and mastoid cavity during the procedure. For example, in tympanoplasty for chronic suppurative otitis media, after removing the incus and stapes, the surgeon needs to address the cholesterol crystals or secretions in the mastoid antrum and mastoid cavity. However, there is currently no irrigator specifically designed for the mastoid antrum, and the location of the mastoid antrum in the human ear is unique; existing general-purpose irrigators cannot effectively irrigate the mastoid antrum through the external auditory canal. Therefore, there is a clinical need for an irrigator specifically designed for the mastoid antrum. Utility Model Content

[0003] The present invention aims to at least partially solve one of the technical problems in the related art: to provide a tympanic irrigator that can irrigate the tympanic antrum in the middle ear through the patient's external auditory canal.

[0004] Therefore, one objective of this utility model is to provide a tympanic cavity irrigator, which includes an outer tube, an inner tube, and a water supply device. The front end of the outer tube is bent to form a curved section. The angle α between the axis OA of the curved section and the center line OB of the outer tube is 90°~180°, and the width d of the curved section is 2mm~10mm. The inner tube is located inside the outer tube. The front end of the inner tube extends into the curved section and is flush with or exposed outside the opening of the curved section. The rear end of the inner tube is exposed axially outside the rear end of the outer tube. The outlet of the water supply device is connected to the rear end of the inner tube. A limiter is provided between the outer tube and the inner tube to restrict the axial movement of the inner tube into the outer tube. The curved section formed by bending the front end of the outer tube can guide the inner tube to bend in this curved section, so that the water flow provided by the water supply device can be ejected in the curved direction to complete the flushing of the patient's mastoid region. The width of the curved section is limited to 2mm~10mm, so that the curved section can smoothly pass through the patient's external auditory canal and enter the middle ear.

[0005] According to one example of this utility model, the width d of the bent pipe section is 6mm.

[0006] According to one example of the present invention, the included angle α is 135° or 180°.

[0007] According to one example of this utility model, the outer tube includes a straight tube and a tapered tube. The diameter of the rear end of the tapered tube is larger than the diameter of the front end. The front end of the straight tube is bent to form the bent section. The rear end of the straight tube is connected to the front end of the tapered tube with a smaller diameter. The straight tube and the tapered tube are an integral structure. The tapered tube design, with one end larger than the other, facilitates the smooth insertion of the inner tube into the outer tube from the rear end.

[0008] According to one example of this utility model, the length L1 of the straight tube is 60~100mm.

[0009] According to one example of this invention, the limiter includes a friction block made of an elastic material. The friction block has a ring-shaped structure and is fitted over the inner tube. The inner diameter of the friction block is smaller than the outer diameter of the inner tube, allowing for a sliding fit between the friction block and the outer wall of the inner tube with frictional resistance. The outer diameter of the friction block is larger than the diameter of the rear end of the outer tube. The friction block applies frictional resistance to the inner tube, stabilizing its axial insertion into the outer tube and preventing damage to the patient's inner ear region caused by excessive axial insertion.

[0010] According to an example of this utility model, the limiter includes the friction block, a front cover, and a rear cover. The front cover and the rear cover are axially closed to form an inner cavity for accommodating the friction block, and the relative position of the front cover and the rear cover along the axial direction is adjustable so that the width H of the inner cavity along the axial direction can be increased or decreased. Both the front cover and the rear cover are provided with through holes for the inner tube to pass through. By adjusting the relative position of the front cover and the rear cover, the friction block can be squeezed, thereby adjusting the frictional resistance applied by the friction block to the inner tube according to the degree of squeezing. In the early stage of the inner tube being inserted into the outer tube, the frictional resistance is small, making the insertion process of the inner tube easier and faster. After the inner tube is inserted into place, the positioning of the inner tube can be achieved by increasing the frictional resistance.

[0011] According to one example of the present invention, the opening of the rear cover is fitted outside the opening of the front cover, and the front cover and the rear cover are threaded together.

[0012] According to one example of the present invention, the outer wall of the inner tube has scale lines.

[0013] According to an example of the present invention, the front cover has a convex ring made of transparent material on the side near the rear end of the outer tube. One end of the convex ring is fixed to the front cover, and the other end abuts against the rear end of the outer tube. The scale line on the outer wall of the inner tube is located at the position corresponding to the rear end of the outer tube.

[0014] The above technical solution has the following advantages or beneficial effects: First, the curved section at the front end of the outer tube allows the outlet of the inner tube to bend, changing the direction of the water flow, so that the tympanic cavity, which was originally inaccessible, can be thoroughly cleaned. Furthermore, the width of this curved section is limited, allowing it to pass through the patient's external auditory canal and enter the middle ear. Second, the rear end of the outer tube adopts a tapered design, and the larger rear end opening of this tapered tube makes the insertion of the inner tube more convenient. Third, the friction block fitted around the inner tube applies frictional resistance to the inner tube, preventing the inner tube from being inserted too quickly. During insertion, excessive insertion can cause damage to the patient's inner ear organs. Furthermore, the friction block is fitted onto the front and rear covers. The relative or opposite movement of the front and rear covers allows the friction block to be squeezed, thereby adjusting the magnitude of the friction resistance applied to the inner tube. Finally, the design of the transparent protrusion and the setting of the scale lines on the outer wall of the inner tube enable the surgeon to promptly determine the position of the front end of the inner tube relative to the outer tube, whether it is retracted inside the outer tube or extended outside the outer tube. If the front end of the inner tube extends outside the outer tube, the length information of the extended part can be obtained in a timely manner through the scale lines.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the tympanic cavity irrigator of this utility model.

[0017] Figure 2 for Figure 1 An explosion diagram showing the disassembled pleural irrigator.

[0018] Figure 3 for Figure 1 A schematic diagram of the internal structure of the tympanic cavity irrigator.

[0019] Figure 4 for Figure 3 A magnified view of a portion of region "A".

[0020] Figure 5 for Figure 3 A magnified view of a portion of region "B".

[0021] Figure 6 This is a schematic diagram of the limiter in this utility model.

[0022] Figure 7 for Figure 6 An exploded view of the disassembled middle limit switch.

[0023] Figure 8 for Figure 6 A schematic diagram of the internal structure of the middle limit switch.

[0024] Among them, 100 is the outer pipe; 200 is the inner pipe; 300 is the water supply device; 400 is the limiter; 1 is the bend section; 2 is the straight pipe; 3 is the tapered pipe; 4 is the friction block; 5 is the front cover; 5.1 is the through hole; 6 is the rear cover; 6.1 is the through hole; 7 is the scale line; 8 is the convex ring. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0026] The tympanic cavity irrigator according to an embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

[0027] This utility model provides a tympanic cavity irrigator, as shown in the figure. It includes an outer tube 100, an inner tube 200, and a water supply device 300. The front end of the outer tube 100 is bent to form a curved section 1. The angle α between the axis OA of the opening of the curved section 1 and the center line OB of the outer tube 100 is 90°~180°, and the width d of the curved section 1 is 2mm~10mm. The inner tube 200 is located inside the outer tube 100. The front end of the inner tube 200 extends into the curved section 1 and is flush with or exposed outside the opening of the curved section 1. The rear end of the inner tube 200 is exposed axially outside the rear end of the outer tube 100. The outlet of the water supply device 300 is connected to the rear end of the inner tube 200. A limiter 400 is provided between the outer tube 100 and the inner tube 200 to restrict the inner tube 200 from moving axially into the outer tube 100. In this embodiment, the outer tube 100 is made of a rigid material, such as metal or rigid plastic. Its curved section 1 is shaped during the production process of the outer tube 100. The inner tube 200 is a flexible tube made of a flexible material. When the front end of the inner tube 200 extends into the outer tube 100 from the rear end, the inner tube 200 can bend along the curved section 1 and extend to the opening position of the curved section 1.

[0028] Preferably, the water supply device 300 is a syringe with a piston rod, and the flushing fluid inside the syringe can be squeezed and forced into the inner tube by manually pushing the piston rod.

[0029] Preferably, the rinsing solution can be any type of existing medical rinsing solution, such as physiological saline.

[0030] Based on the preferred width d of the above-mentioned bend section 1, the width d of the bend section 1 is 6mm.

[0031] Based on the preferred angle α between the axis OA of the pipe section 1 at the pipe opening and the center line OB of the outer pipe 100, the angle α is 135° or 180°. It should be understood that the axis OA refers to the angle between the axis OA and the center line OB of the outer pipe 100. Figure 4 The vector originating from point O and pointing towards point A, with the centerline OB being the vector originating from point O. Figure 4 The vector originating from point O and moving towards point B.

[0032] In a preferred embodiment of the above, the outer tube 100 includes a straight tube 2 and a tapered tube 3. The diameter of the rear end of the tapered tube 3 is larger than the diameter of the front end. The front end of the straight tube 2 is bent to form the bent section 1. The rear end of the straight tube 2 is connected to the front end of the tapered tube 3 with a smaller diameter. The straight tube 2 and the tapered tube 3 are an integral structure.

[0033] Preferably, the length L1 of the straight pipe 2 is 60~100mm. Specifically, the length L1 of the straight pipe 2 is 80mm, and the length L2 of the tapered pipe 3 is 80mm.

[0034] like Figures 5-8 As shown, the limiter 400 includes a friction block 4 made of elastic material. The friction block 4 has a ring-shaped structure and is fitted around the inner tube 200. The inner diameter of the friction block 4 is smaller than the outer diameter of the inner tube 200, so that the friction block 4 and the outer wall of the inner tube 200 slide in a manner with frictional resistance. That is, the friction block 4 has a central hole extending through both ends along its own axis. The friction block 4 is fitted around the inner tube 200 through the central hole, and the frictional resistance generated by the elastic force of the friction block 4 on the outer wall of the inner tube 200 causes the inner tube 200 to have a reverse frictional resistance during sliding relative to the friction block 4. The outer diameter of the friction block 4 is larger than the diameter of the rear end of the outer tube 100. In this embodiment, the friction block 4 is preferably made of rubber.

[0035] Based on further improvements to the aforementioned limiter 400 structure: such as Figure 5-8As shown, the limiter 400 includes the friction block 4 in the above embodiment, as well as a front cover 5 and a rear cover 6. Both the front cover 5 and the rear cover have a bowl-shaped structure. The openings of the front cover 5 and the rear cover 6 face each other and axially close to form an inner cavity for accommodating the friction block 4. Specifically, the inner diameter of the rear cover 6 is equal to or greater than the outer diameter of the front cover 5, allowing the opening of the rear cover to fit over the front cover 5. Furthermore, in this embodiment, the front cover 5 and the rear cover 6 are configured to move relative to each other axially, making their relative axial position adjustable. This allows the axial width H of the inner cavity to increase or decrease. Both the front cover 5 and the rear cover 6 have through holes for the inner tube 200 to pass through. The inner tube 200 sequentially passes through the through hole 5.1 on the front cover 5, the central hole on the friction block 4, and the through hole 6.1 on the rear cover 6. When the front cover 5 and the rear cover 6 move relative to each other axially, the width H of the inner cavity decreases, thus squeezing the friction block 4 and increasing the force exerted by the friction block 4 on the outer wall of the inner tube 200, ultimately increasing the frictional resistance between the friction block 4 and the inner tube 200. Conversely, when the front cover 5 and the rear cover 6 move away from each other axially, the width H of the inner cavity increases, thus reducing the squeezing force on the friction block 4. This allows the friction block 4 to return to its axial position under its own elastic restoring force, reducing the force exerted by the friction block 4 on the outer wall of the inner tube 200 and ultimately reducing the frictional resistance between the friction block 4 and the inner tube 200. In this embodiment, the frictional force between the limiter and the inner tube is adjustable. Therefore, in actual use, the frictional force of the limiter can be reduced during the adjustment of the inner tube position, making the adjustment process easier. After the adjustment is completed, the frictional force can be increased to ensure that the position of the inner tube does not shift.

[0036] In a preferred embodiment described above, the opening of the rear cover 6 is fitted outside the opening of the front cover 5, and the front cover 5 and the rear cover 6 are threaded together. Specifically, the outer side wall of the front cover 5 has external threads, and the inner side wall of the rear cover 6 has internal threads. The relative rotation between the front cover 5 and the rear cover 6 is converted into axial relative movement through the transmission connection of the external and internal threads.

[0037] Preferably, such as Figure 2 As shown, the outer wall of the inner tube 200 has a scale line 7.

[0038] Preferably, the front cover 5 has a transparent protruding ring 8 on the side near the rear end of the outer tube 100. One end of the protruding ring 8 is fixed to the front cover 5, and the other end abuts against the rear end of the outer tube 100. The scale line 7 on the outer wall of the inner tube 200 is located at the position corresponding to the rear end of the outer tube 100. In this embodiment, medical personnel can observe the scale line 7 on the outer wall of the inner tube 200 through the transparent protruding ring 8, and determine the position of the front end of the inner tube 200 relative to the front end of the outer tube 100 based on the corresponding position between the scale line 7 and the rear end face of the outer tube. That is, they can determine whether the front end of the inner tube is located inside the curved section 1 of the outer tube 100, or is roughly flush with the opening of the curved section 1, or protrudes outside the opening of the curved section 1.

[0039] Furthermore, such as Figures 5-8 As shown, the convex ring 8 has an annular groove, into which the rear end of the outer tube is inserted. The annular groove allows the rear end of the outer tube to be fixed in relative position with the limiter 400, preventing radial swaying.

[0040] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

[0041] For those skilled in the art, various changes and modifications will undoubtedly be apparent after reading the above description. Therefore, the appended claims should be considered as covering all changes and modifications that encompass the true intent and scope of this utility model. Any and all equivalent scope and content within the scope of the claims should be considered as still falling within the intent and scope of this utility model.

Claims

1. An antrum irrigator characterised in that: The utility model provides a water supply device, which comprises an outer tube (100), an inner tube (200) and a water supply device (300), the front end of the outer tube (100) is bent to form a bent tube section (1), the included angle alpha between the axis OA of the tube opening position of the bent tube section (1) and the center line OB of the outer tube (100) is 90-180 DEG, and the width d of the bent tube section (1) is 2-10 mm, the inner tube (200) is located in the outer tube (100), the front end of the inner tube (200) extends into the bent tube section (1) and is flush with the tube opening on the bent tube section (1) or is exposed outside the tube opening, the rear end of the inner tube (200) is exposed outside the rear end of the outer tube (100) in the axial direction, the water outlet of the water supply device (300) is communicated with the rear end of the inner tube (200), and the limiting stopper (400) for limiting the inner tube (200) from moving towards the inner tube (100) in the axial direction is arranged between the outer tube (100) and the inner tube (200).

2. The antrum irrigator according to claim 1, characterized in that: The width d of the bent tube section (1) is 6 mm.

3. The antrum irrigator according to claim 1, characterized in that: The included angle alpha is 135 DEG or 180 DEG.

4. The antrum irrigator according to claim 1, characterized in that: The outer tube (100) comprises a straight tube (2) and a tapered tube (3), the diameter of the rear end of the tapered tube (3) is larger than the diameter of the front end, the front end of the straight tube (2) is bent to form the bent tube section (1), the rear end of the straight tube (2) is communicated with the front end of the tapered tube (3) with a smaller diameter, and the straight tube (2) and the tapered tube (3) are an integral structure.

5. The antrum irrigator according to claim 4, characterized in that: The length L1 of the straight tube (2) is 60-100 mm.

6. Antrum irrigator according to any one of claims 1-5, characterized in that: The limiting stopper (400) comprises a friction block (4) made of elastic material, the friction block (4) has an annular structure, the friction block (4) is sleeved outside the inner tube (200), and the inner diameter of the friction block (4) is smaller than the outer diameter of the inner tube (200), so that the friction block (4) is slidably connected with the outer side wall of the inner tube (200) in a manner that friction resistance exists between them, and the outer diameter of the friction block (4) is larger than the diameter of the rear end of the outer tube (100).

7. The antrum irrigator according to claim 6, characterized in that: The limiting stopper (400) comprises the friction block (4) and front and rear covers (5 and 6), the front and rear covers (5 and 6) are folded towards each other in the axial direction to form an inner cavity for accommodating the friction block (4), the relative position of the front and rear covers (5 and 6) in the axial direction is adjustable, so that the width H of the inner cavity in the axial direction can be increased or reduced, and the front and rear covers (5 and 6) are both provided with through holes for the inner tube (200) to pass through.

8. The antrum irrigator according to claim 7, characterized in that: The opening position of the rear cover (6) is sleeved outside the opening position of the front cover (5), and the front and rear covers (5 and 6) are threadedly connected.

9. The antrum irrigator according to claim 8, characterized in that: The outer side wall of the inner tube (200) is provided with scale lines (7).

10. The antrum irrigator according to claim 7, characterized in that: The side of the front cover (5) close to the rear end of the outer tube (100) is provided with a convex ring (8) made of transparent material, one end of the convex ring (8) is fixed to the front cover (5), the other end abuts against the rear end of the outer tube (100), and the scale lines (7) on the outer side wall of the inner tube (200) are located at the position corresponding to the rear end of the outer tube (100).

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