Multi-angle adjusting assembly for nasal endoscope

Abstract

The invention relates to the technical field of medical instruments and discloses a nasal endoscope multi-angle adjusting assembly which comprises a nasal endoscope body, the nasal endoscope body comprises a light cone and an outer endoscope tube, a through opening is formed in the position, close to the handheld end, of the outer endoscope tube, the outer wall of the outer endoscope tube is fixedly connected with a holder, and the holder is located on the periphery of the through opening. A sleeve corresponding to the through opening is arranged on the outer side of the holder, a knob is rotationally connected in the sleeve, an inner mirror tube is clamped in the outer mirror tube, a working channel is formed between the inner mirror tube and the outer mirror tube, a plurality of limiting rings are clamped in the working channel, an object mirror frame is rotationally connected to the insertion end of the inner mirror tube, and an object lens is fixedly connected to the inner periphery of the object mirror frame. The nasal cavity endoscope has the advantages that the angle of the objective lens is accurately controlled through the up-down knob, an operator can easily obtain visual fields of different angles in the nasal cavity, and the angle of the objective lens can be flexibly adjusted when the nasal cavity side wall, the paranasal sinus opening, the turbinate and other structures are examined.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a nasal endoscope multi-angle adjustment component. Background Art

[0002] In the traditional fixed-angle nasal endoscope technology used in the past, the objective lens angle is fixed and cannot be adjusted. This results in that in actual nasal examination or surgical operation scenarios, when facing the complex and diverse anatomical structures inside the nasal cavity, such as the nasal side walls, sinus openings, nasal conchas and other different parts, due to the limited field of view, often only the situation at a specific angle can be seen. For example, when it is necessary to observe the upper structure of the nasal cavity, the fixed-angle objective lens may not be able to focus well on the details such as the top mucosa of the nasal cavity, resulting in a visual blind spot. When observing the bottom of the nasal cavity, it may also be difficult to clearly present the situation of the corresponding part due to the inappropriate angle. This problem of limited field of view is very likely to cause the operator to miss the lesion site and fail to fully and accurately grasp the actual situation in the nasal cavity, thereby affecting the accuracy of diagnosis and the effectiveness of subsequent treatment;

[0003] To this end, we propose a multi-angle adjustment component for a nasal endoscope. Summary of the invention

[0004] The object of the present invention is to provide a multi-angle adjustment component for a nasal endoscope.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-angle adjustment component of a nasal endoscope, comprising a nasal endoscope body, the nasal endoscope body comprising a light cone and an outer mirror tube, the light cone being located at the handheld end of the nasal endoscope body, characterized in that a through opening is opened at a position of the outer mirror tube close to one end of the light cone, a retaining frame is fixedly connected to the outer wall of the outer mirror tube, the retaining frame is located at the periphery of the through opening, a sleeve is provided on the outer side of the retaining frame, the sleeve is communicated with the through opening, a knob is rotatably connected inside the sleeve, an endoscope tube is clamped inside the outer mirror tube, a working channel is formed between the endoscope tube and the outer mirror tube, a plurality of limiting rings are clamped inside the working channel, the outer wall of the limiting ring is tightly fitted with the inner wall of the outer mirror tube, the inner wall of the limiting ring is tightly fitted with the outer wall of the endoscope tube, an objective lens frame is movably connected to the insertion end of the endoscope tube, an objective lens is fixedly connected to the inner periphery of the objective lens frame, and steel wires for driving the objective lens frame to rotate are provided on both sides of the objective lens frame.

[0006] As a further solution of the present invention: the through-port vertically penetrates the outer mirror tube, the central axis of the through-port is orthogonal to the central axis of the outer mirror tube, and the central axis of the through-port is parallel to the central axis of the light cone.

[0007] As a further solution of the present invention: an upper knob and a lower knob are respectively connected to both sides of the sleeve.

[0008] As a further solution of the present invention: the outer walls of the two sleeves at one end away from the retaining frame are fixedly connected with damping washers, and the upper knob and the lower knob are matched with the outer ring of the damping washer.

[0009] As a further solution of the present invention: rotating pins are fixedly connected to both sides of the objective lens frame, and the rotating pins are rotatably connected to the insertion end of the endoscope tube.

[0010] As a further solution of the present invention: one end of the steel wire is fixedly connected to the objective lens frame, and the other end of the steel wire is fixedly connected to the knob.

[0011] As a further solution of the present invention: a first steel wire is provided on the top of the objective lens frame, one end of the first steel wire is fixedly connected to the top of the objective lens frame, the other end of the first steel wire passes around the top of the insertion end of the endoscope tube and passes through the through hole, the first steel wire is fixedly connected to the inner end of the upper knob, and a first limiting groove is provided at the contact position between the insertion end of the endoscope tube and the first steel wire.

[0012] As a further solution of the present invention: a second steel wire is provided at the bottom of the objective lens frame, one end of the second steel wire is fixedly connected to the bottom of the objective lens frame, the other end of the second steel wire passes around the bottom of the insertion end of the endoscope tube and passes through the through hole, the second steel wire is fixedly connected to the inner end of the lower knob, and a second limiting groove is provided at the contact position between the insertion end of the endoscope tube and the second steel wire.

[0013] As a further solution of the present invention: a transparent protective sheet is fixedly connected to the insertion end of the outer mirror tube, and an angle between the transparent protective sheet and the outer wall of the outer mirror tube is an obtuse angle.

[0014] By adopting the above technical solution, compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The present invention accurately controls the angle of the objective lens by the upper and lower knobs, so that the operator can easily obtain the visual field of different angles in the nasal cavity. When inspecting the side wall of the nasal cavity, the opening of the sinus, the nasal concha and other structures, the objective lens angle can be flexibly adjusted to avoid missing the lesion site due to the limited visual field of the fixed angle. For example, when observing the upper structure of the nasal cavity, the objective lens can be tilted by turning the upper knob to clearly see the details such as the top mucosa of the nasal cavity, and when observing the bottom of the nasal cavity, the objective lens can be adjusted to a vertical state by using the lower knob to effectively observe. This multi-angle adjustment function makes the operation of the nasal endoscope more flexible. When facing the complex anatomical structure and pathological conditions in the nasal cavity, the operator does not need to frequently adjust the overall position of the nasal endoscope, and can obtain the required visual field by adjusting the objective lens angle, which reduces the complexity and difficulty of the operation. Compared with the traditional fixed-angle nasal endoscope, the inspection efficiency is greatly improved, the inspection time is shortened, and the patient's discomfort is also alleviated;

[0016] 2. In the present invention, the outer mirror tube, the inner mirror tube and the limit ring in the main structure of the nasal endoscope are tightly fitted. This design ensures the stability of the endoscope tube, thereby providing a stable basis for adjusting the objective lens angle. When operating the knob to adjust the objective lens angle, the stability of the observation field will not be affected by the shaking of the endoscope tube;

[0017] 3. The damping washer designed in the present invention is very important for obtaining a clear and stable field of view during nasal endoscopy or surgical operation. When the doctor adjusts the objective lens to a suitable angle by turning the knob to observe specific anatomical structures or lesions in the nasal cavity, the cooperation between the damping washer and the knob can ensure that the objective lens remains at this angle, allowing the doctor to continuously and stably observe the lesion site and avoid affecting the diagnosis due to shaking of the field of view or changes in angle.

[0018] Other advantages, objectives and features of the present invention will be set forth in part in the following description and, in part, will be apparent to those skilled in the art based on an examination of the following or may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the nasal endoscope body in an embodiment of the present invention;

[0020] Figure 2 FIG. 2 is a cross-sectional view of the main body of the nasal endoscope according to an embodiment of the present invention. Figure 1 ;

[0021] Figure 3 FIG. 2 is a cross-sectional view of the main body of the nasal endoscope according to an embodiment of the present invention. Figure 2 ;

[0022] Figure 4 FIG. 2 is a cross-sectional view of the main body of the nasal endoscope according to an embodiment of the present invention. Figure 3 ;

[0023] Figure 5 FIG. 2 is a cross-sectional view of the main body of the nasal endoscope according to an embodiment of the present invention. Figure 4 ;

[0024] Figure 6 A partial cross-sectional view of a retainer in an embodiment of the present invention;

[0025] Figure 7 Schematic diagram of the structure of the objective lens frame in an embodiment of the present invention.

[0026] In the figure: 1. nasal endoscope body; 2. light cone; 3. outer mirror tube; 31. through port; 32. working channel; 33. transparent protective sheet; 4. retaining frame; 41. sleeve; 42. damping washer; 5. knob; 51. upper knob; 52. lower knob; 6. endoscope tube; 61. first limiting groove; 62. second limiting groove; 7. limiting ring; 71. through hole; 8. objective lens frame; 81. objective lens; 82. rotating tip; 9. steel wire; 91. first steel wire; 92. second steel wire. DETAILED DESCRIPTION

[0027] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0028] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0029] Please see attached Figure 1 -Attached Figure 7 The present invention discloses a nasal endoscope multi-angle adjustment component, comprising a nasal endoscope body 1, wherein the nasal endoscope body 1 comprises a light cone 2 and an outer mirror tube 3, wherein the light cone 2 is located at the handheld end of the nasal endoscope body 1, and wherein the outer mirror tube 3 is provided with a through opening 31 at a position close to one end of the light cone 2, wherein a retaining frame 4 is fixedly connected to the outer wall of the outer mirror tube 3, wherein the retaining frame 4 is located at the periphery of the through opening 31, wherein a sleeve 41 is provided on the outer side of the retaining frame 4, wherein the sleeve 41 is connected to the through opening 31, wherein the sleeve 41 is rotated inside A knob 5 is movably connected, an endoscope tube 6 is clamped inside the outer mirror tube 3, a working channel 32 is formed between the endoscope tube 6 and the outer mirror tube 3, a plurality of limit rings 7 are clamped in the working channel 32, the outer wall of the limit ring 7 is tightly fitted with the inner wall of the outer mirror tube 3, the inner wall of the limit ring 7 is tightly fitted with the outer wall of the endoscope tube 6, an objective lens frame 8 is movably connected to the insertion end of the endoscope tube 6, an objective lens 81 is fixedly connected to the inner periphery of the objective lens frame 8, and steel wires 9 for driving the objective lens frame 8 to rotate are provided on both sides of the objective lens frame 8.

[0030] In the first embodiment, the through opening 31 vertically penetrates the outer mirror tube 3, the central axis of the through opening 31 is orthogonal to the central axis of the outer mirror tube 3, and the central axis of the through opening 31 is parallel to the central axis of the light cone 2;

[0031] Specifically, the through opening 31 vertically penetrates the outer mirror tube 3, and its center line is orthogonal to the central axis of the outer mirror tube 3 and parallel to the center line of the light cone 2. Such a design helps to ensure that each component works under a relatively regular and reasonable spatial position relationship, so that subsequent operations such as component linkage and angle adjustment performed through the through opening 31 can be carried out more smoothly and accurately, avoiding situations that are not conducive to imaging observation, such as jamming or affecting light conduction due to unreasonable channel or component position relationships.

[0032] In the second embodiment, an upper knob 51 and a lower knob 52 are connected to both sides of the sleeve 41, and the outer walls of the two sleeves 41 away from the retaining frame 4 are fixedly connected with a damping washer 42, and the upper knob 51 and the lower knob 52 are matched with the outer ring of the damping washer 42;

[0033] Specifically, the presence of the damping washer 42 can provide appropriate friction for the rotation of the knob 5, which can not only ensure that the knob 5 can be smoothly rotated during manual operation to change the angle of the objective lens 81, but also enable the objective lens 81 to remain stable after being adjusted to a suitable angle, and will not easily experience unexpected angle changes due to external forces and other factors, thereby ensuring the relative stability of the observation field of view and facilitating the operator to perform detailed inspections or surgical operations.

[0034] In the third embodiment, rotating pins are fixedly connected to both sides of the objective lens frame, the rotating pins are rotatably connected to the insertion end of the endoscope tube, one end of the steel wire 9 is fixedly connected to the objective lens frame 8, and the other end of the steel wire 9 is fixedly connected to the knob 5. A first steel wire 91 is provided at the top of the objective lens frame 8, one end of the first steel wire 91 is fixedly connected to the top of the objective lens frame 8, the other end of the first steel wire 91 bypasses the top of the insertion end of the endoscope tube 6 and passes through the through hole 71, the first steel wire 91 is fixedly connected to the inner end of the upper knob 51, and a first limiting groove 61 is provided at the contact position between the insertion end of the endoscope tube 6 and the first steel wire 91, a second steel wire 92 is provided at the bottom of the objective lens frame 8, one end of the second steel wire 92 is fixedly connected to the bottom of the objective lens frame 8, the other end of the second steel wire 92 bypasses the bottom of the insertion end of the endoscope tube 6 and passes through the through hole 71, the second steel wire 92 is fixedly connected to the inner end of the lower knob 52, and a second limiting groove 62 is provided at the contact position between the insertion end of the endoscope tube 6 and the second steel wire 92, and a transparent protective sheet is fixedly connected to the insertion end of the outer mirror tube, and the angle between the transparent protective sheet and the outer wall of the outer mirror tube is an obtuse angle;

[0035] Specifically, the objective lens frame 8 is rotatably connected to the insertion end of the endoscope tube 6 through the rotating pins 82 on both sides, and cooperates with the connection structure of the first steel wire 91 at the top and the upper knob 51, and the second steel wire 92 at the bottom and the lower knob 52, so that the objective lens 81 can be accurately controlled to rotate around the rotation point by rotating the upper and lower knobs 52, thereby realizing the specific mechanical transmission of the multi-angle adjustment function and the angle change operation mode, so that the angle of the objective lens 81 can be flexibly changed as needed. The transparent protective sheet 33 fixedly connected to the insertion end of the outer mirror tube 3 is set at an obtuse angle to the outer wall of the outer mirror tube 3. On the one hand, it can play a certain protective role on the internal components and prevent external factors from causing damage to the internal key components such as the objective lens 81. On the other hand, this inclined setting may not block the observation field of view, and can also assist in guiding the entry of instruments to a certain extent, so as to avoid accidental collision of instruments with the endoscope tube 6 and other components, thereby ensuring the safety and functionality of the nasal endoscope during use.

[0036] Working principle:

[0037] When the upper knob 51 is rotated, since the bottom end of the upper knob 51 is fixedly connected to the first steel wire 91, one end of the first steel wire 91 is pulled back, and the other end of the first steel wire 91 bypasses the limiting groove at the top end of the insertion end of the endoscope tube 6 and is connected to the top of the outer frame of the objective lens 81. This connection method allows the pulling force of the steel wire 9 to directly act on the objective lens frame 8. In the case where the opening of the insertion end of the endoscope tube 6 is in an inclined structure, as the first steel wire 91 is continuously recovered, the pulling force will cause the objective lens 81 to start rotating around the rotation connection point between it and the insertion end of the endoscope tube 6. The objective lens 81 will gradually change its angle and eventually reach a tangent state with the top end of the insertion end of the endoscope tube 6. At this time, the objective lens 81 presents a specific tilt angle, which can be adjusted according to specific observation needs or operation purposes. For example, when observing certain specific positions or structures in the nasal cavity, such a tilt angle can provide a more suitable viewing angle, allowing doctors to better observe the internal conditions of the nasal cavity.

[0038] When the lower knob 52 is rotated, the second steel wire 92 fixed to the top of the lower knob 52 is driven to be retracted, and the second steel wire 92 drives the objective lens 81 to rotate in the opposite direction to the rotation of the upper knob 51. Because the rotating tip 82 is located directly above the bottom end of the insertion end of the endoscope tube 6, after the second steel wire 92 is retracted to a certain extent, the objective lens 81 can be accurately rotated counterclockwise, and finally the objective lens 81 can be perpendicular to the inner wall of the endoscope tube 6. This vertical state can observe the field of view angle directly in front.

[0039] At this point, the entire workflow ends.

[0040] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0042] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments.

[0043] It is apparent to those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the invention, and the changes still fall within the protection scope of the invention.

Claims

1. A nasal endoscope multi-angle adjustment assembly, comprising a nasal endoscope body, the nasal endoscope body comprising a light cone and an outer endoscope tube, the light cone being located at a handheld end of the nasal endoscope body, characterized in that: The outer mirror tube is provided with a through opening at a position close to one end of the light cone, the outer wall of the outer mirror tube is fixedly connected to a retaining frame, the retaining frame is located at the periphery of the through opening, a sleeve is provided on the outer side of the retaining frame, the sleeve is communicated with the through opening, a knob is rotatably connected inside the sleeve, an inner mirror tube is clamped inside the outer mirror tube, a working channel is formed between the inner mirror tube and the outer mirror tube, a plurality of limit rings are clamped inside the working channel, the outer wall of the limit ring is tightly fitted with the inner wall of the outer mirror tube, the inner wall of the limit ring is tightly fitted with the outer wall of the inner mirror tube, an objective lens frame is movably connected to the insertion end of the endoscope tube, an objective lens is fixedly connected to the inner periphery of the objective lens frame, and steel wires for driving the objective lens frame to rotate are provided on both sides of the objective lens frame.

2. A nasal endoscope multi-angle adjustment assembly according to claim 1, characterized in that: The through-port vertically penetrates the outer mirror tube, the central axis of the through-port is orthogonal to the central axis of the outer mirror tube, and the central axis of the through-port is parallel to the central axis of the light cone.

3. The multi-angle adjustment assembly of a nasal endoscope according to claim 1, characterized in that: An upper knob and a lower knob are respectively connected to both sides of the sleeve.

4. The multi-angle adjustment assembly of a nasal endoscope according to claim 3, characterized in that: The outer walls of the two sleeves at one end away from the retaining frame are both fixedly connected with damping washers, and the upper knob and the lower knob are both matched with the outer rings of the damping washers.

5. The multi-angle adjustment assembly of a nasal endoscope according to claim 1, characterized in that: Rotating pins are fixedly connected to both sides of the objective lens frame, and the rotating pins are rotatably connected to the insertion end of the endoscope tube.

6. The multi-angle adjustment assembly of a nasal endoscope according to claim 1, characterized in that: One end of the steel wire is fixedly connected to the objective lens frame, and the other end of the steel wire is fixedly connected to the knob.

7. The multi-angle adjustment assembly of a nasal endoscope according to claim 3, characterized in that: A first steel wire is provided on the top of the objective lens frame, one end of the first steel wire is fixedly connected to the top of the objective lens frame, the other end of the first steel wire passes around the top of the insertion end of the endoscope tube and passes through the through hole, the first steel wire is fixedly connected to the inner end of the upper knob, and a first limiting groove is provided at the contact position between the insertion end of the endoscope tube and the first steel wire.

8. The multi-angle adjustment assembly of a nasal endoscope according to claim 3, characterized in that: A second steel wire is provided at the bottom of the objective lens frame, one end of the second steel wire is fixedly connected to the bottom of the objective lens frame, the other end of the second steel wire passes around the bottom of the endoscope tube insertion end and passes through the through hole, the second steel wire is fixedly connected to the inner end of the lower knob, and a second limiting groove is provided at the contact position between the endoscope tube insertion end and the second steel wire.

9. The multi-angle adjustment assembly of a nasal endoscope according to claim 1, characterized in that: The insertion end of the outer mirror tube is fixedly connected with a transparent protective sheet, and the included angle between the transparent protective sheet and the outer mirror tube is an obtuse angle.

Images