A cystoscope having a filter assembly

Abstract

The invention provides a cystoscope with a filter assembly, the cystoscope comprising a filter assembly, the filter assembly comprising a bearing upper cover plate, a filter, a roller, a bearing inner ring plate, a bearing outer ring plate and a bearing lower cover plate, the bearing inner ring plate being nested in the bearing outer ring plate, the bearing upper cover plate and the bearing lower cover plate covering two sides of the bearing outer ring plate respectively, the bearing inner ring plate, the bearing outer ring plate, the bearing upper cover plate and the bearing lower cover plate forming a bearing cavity of the filter assembly, the roller being put into the bearing cavity, the bearing cavity with the roller being a bearing of the filter assembly, and the filter being adhered to the bearing inner ring plate. In this way, the filter assembly does not affect the rotation of the cystoscope when the cystoscope rotates, and the filter does not tilt and leak light.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and in particular to a cystoscope with a filter. Background Technology

[0002] like Figure 1 The diagram shows a cystoscope in the prior art, which is a tool used in human medical treatment. It is inserted into the human body through natural cavities or through a small surgical incision. Through a complete connection, it can transmit images from the surgical end to a display system in real time.

[0003] A cystoscope is a widely used instrument in medical surgery. The output fiber of a laser therapy machine is guided into the patient's body through it, and the surgical images are transmitted in real time to a display system. However, the green laser used for treatment is very strong. If the green laser is not allowed to pass through the imaging system to the monitor, it will appear green, affecting the image seen by the doctor and making surgery impossible. The solution is to place a filter inside the cystoscope to specifically filter the green laser. In current technology, the cystoscope is opened, and the central circular opening is the optical image transmission channel. Placing a green laser filter here prevents the green laser from passing through, allowing the surgery to proceed normally.

[0004] However, the problem is that this central hole is also the axis of rotation for the cystoscope. During normal operation, the cystoscope rotates around this central hole. Therefore, ① the filter cannot be clamped too tightly, otherwise it will affect the rotation of the cystoscope, and ② the space available for placing the filter varies between different cystoscopes. Thus, manufacturing a single filter that can fit all cystoscopes would result in a filter that is too loose in certain models. This is because the filter is too thin, and during the rotation of the cystoscope, the filter may tilt, causing the green laser to leak from the side, travel along the imaging system, and appear as a green patch on the monitor, affecting the normal progress of the surgery.

[0005] To address the issue of light leakage (from the green laser) during green laser surgery affecting the surgeon's operation, a light-leakage-proof cystoscope is needed. Summary of the Invention

[0006] The present invention provides a cystoscope with a filter assembly to at least solve the technical problem of light leakage affecting the surgeon's operation in the prior art.

[0007] This invention provides a cystoscope with a filter assembly. The cystoscope includes a filter assembly comprising a bearing upper cover plate, a filter, rollers, an inner bearing ring, an outer bearing ring, and a lower bearing cover plate. The inner bearing ring is nested within the outer bearing ring. The upper and lower bearing cover plates respectively cover both sides of the outer bearing ring. The inner, outer, upper, and lower bearing rings form the bearing cavity of the filter assembly. The rollers are placed within the bearing cavity, and the bearing cavity with the rollers serves as the bearing of the filter assembly. The filter is adhered to the inner bearing ring.

[0008] Optionally, the height of the filter adhered to the inner ring of the bearing does not exceed the upper edge of the upper cover plate and the lower edge of the lower cover plate of the bearing.

[0009] Optionally, a first soft material washer and a second soft material washer may be attached to the upper cover plate and the lower cover plate of the bearing, respectively.

[0010] Optionally, the filter is adhered to the inner ring of the bearing, and the upper edge of the upper cover plate and the lower edge of the lower cover plate of the bearing hold the filter in place.

[0011] Optionally, placing the rollers into the bearing cavity means placing the rollers into the cavity between the inner ring and the outer ring of the bearing.

[0012] Optionally, the number of rollers is at least two.

[0013] Optionally, the number of rollers mentioned above is four.

[0014] Optionally, the cystoscope further includes an objective lens, a tube, an eyepiece cover, and a base. The objective lens and the tube are sealed and fixedly connected by adhesive or welding techniques. The tube and the various parts of the cystoscope body are connected by laser seamless welding. The base and the eyepiece cover are tightened and sealed by precision instruments.

[0015] Optionally, the thickness of the bearing of the filter assembly does not exceed the space reserved between the eyepiece cover and the base for the filter assembly.

[0016] Optionally, the cystoscope described above can filter specific wavelengths of laser light to prevent light leakage from the sides.

[0017] To address the aforementioned shortcomings of the prior art, this invention provides a cystoscope with a filter assembly. The most crucial aspect of this invention is that it replaces the filter and gasket in the prior art with... Figure 3The filter assembly shown ensures that when the cystoscope rotates, ① the filter assembly does not affect the rotation of the cystoscope, and ② the filter will not tilt or leak light. Furthermore, the soft gasket in the filter assembly is retractable, eliminating the uneven space that occurs with hard gaskets. The soft gasket also has greater friction than the hard gasket, making it less prone to rotation when twisted. Attached Figure Description

[0018] The above and other objects, features, and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description taken in conjunction with the accompanying drawings. Several embodiments of the invention are illustrated in the drawings by way of example and not limitation, wherein:

[0019] Figure 1 A schematic diagram of the structure of a cystoscope in an optional prior art provided for an embodiment of the present invention;

[0020] Figure 2 An exploded view of the structure of an optional cystoscope with a light-leakage-proof rotatable filter assembly provided for an embodiment of the present invention;

[0021] Figure 3 for Figure 2 An enlarged diagram of the explosion in part A;

[0022] Figure 4 This is a schematic diagram of an optional rotatable filter assembly for preventing light leakage, provided in an embodiment of the present invention.

[0023] Figure label:

[0024] Objective lens 2, lens tube 3, light cone 5, eyepiece cover 8, eyepiece 9, filter assembly 10, base 12, first soft material washer 17, bearing upper cover plate 18, filter 19, roller 20, bearing inner ring plate 21, bearing outer ring plate 22, bearing lower cover plate 23, second soft material washer 24. Detailed Implementation

[0025] The principles and spirit of the invention will now be described with reference to several exemplary embodiments. It should be understood that these embodiments are provided merely to enable those skilled in the art to better understand and implement the invention, and are not intended to limit the scope of the invention in any way. Rather, these embodiments are provided to make this disclosure more thorough and complete, and to fully convey the scope of this disclosure to those skilled in the art.

[0026] This implementation example Figures 1 to 4 As shown.

[0027] like Figures 2 to 4As shown, this embodiment of the invention provides a cystoscope with a filter assembly. The cystoscope includes a filter assembly 10, which includes a bearing upper cover plate 18, a filter 19, rollers 20, an inner bearing ring plate 21, an outer bearing ring plate 22, and a lower bearing cover plate 23. The inner bearing ring plate 21 is nested within the outer bearing ring plate 22. The upper bearing cover plate 18 and the lower bearing cover plate 23 respectively cover both sides of the outer bearing ring plate 22. The inner bearing ring plate 21, the outer bearing ring plate 22, the upper bearing cover plate 18, and the lower bearing cover plate 23 form the bearing cavity of the filter assembly 10. The rollers 20 are placed in the bearing cavity, and the bearing cavity with the rollers 20 is the bearing of the filter assembly 10. The filter 19 is attached to the inner bearing ring plate 21. The aforementioned filter assembly 10 completely replaces the gasket and filter of the prior art. The gasket of the prior art is made of metal, and different cystoscopes have different spaces. When it is inserted, some will leak light. Therefore, the soft filter assembly 10 designed in this invention can be retracted to prevent light leakage.

[0028] Furthermore, the height of the filter 19 adhered to the inner ring plate 21 of the bearing does not exceed the upper edge of the upper cover plate 18 and the lower edge of the lower cover plate 23 of the bearing. This is to ensure that the filter 19 can be fixed in place. Figure 3 As shown.

[0029] Furthermore, a first soft material washer 17 and a second soft material washer 24 are respectively attached to the upper bearing cover plate 18 and the lower bearing cover plate 23. The soft material also increases friction, preventing the filter assembly from moving when the cystoscope is rotated. In addition, the soft material increases spatial flexibility to meet the needs of placing the filter assembly in different internal spaces of the cystoscope.

[0030] Furthermore, the aforementioned filter 19 is adhered to the inner ring plate 21 of the bearing, and the upper edge of the upper bearing cover plate 18 and the lower edge of the lower bearing cover plate 23 hold the filter 19 in place. The filter 19 is well fixed, thus preventing light leakage.

[0031] Furthermore, the roller 20 being placed inside the bearing cavity means that the roller 20 is placed in the cavity between the inner bearing ring 21 and the outer bearing ring 22. This ensures that the filter does not interfere with the rotation of the cystoscope.

[0032] Furthermore, the number of rollers 20 mentioned above is at least two. This satisfies the requirement that the basic filter does not affect the rotation of the cystoscope.

[0033] Furthermore, the number of rollers 20 mentioned above is four. A preferred embodiment where the filter does not affect the rotation of the cystoscope, such as... Figure 3 As shown.

[0034] Furthermore, such as Figure 2 As shown, the cystoscope also includes an objective lens 2, a tube 3, an eyepiece cover 8, and a base 12. The objective lens 2 and the tube 3 are sealed and fixedly connected by adhesive or welding technology. The tube 3 and the various parts of the cystoscope body are connected by laser seamless welding. The base 12 and the eyepiece cover 8 are tightened and sealed by precision instruments.

[0035] Furthermore, the thickness of the bearing of the aforementioned filter assembly 10 does not exceed the distance between the eyepiece cover 8 and the base 12. Figure 4 The space reserved in the filter assembly 10 shown above.

[0036] Furthermore, the aforementioned cystoscope can filter specific wavelengths of laser light to prevent light leakage from the sides.

[0037] The simple gasket in the existing technology has been changed to Figure 3 The structure provides a soft and flexible protective filter, preventing light leakage caused by gaps around the filter, unlike rigid gaskets.

[0038] In addition, the material was changed to a soft washer, which can shrink, so there will be no problem of uneven space as with hard washers. Moreover, the friction of soft washers is greater than that of hard washers, so they are not easy to rotate when twisting.

[0039] A cystoscope consists of three parts: a mechanical system, an optical system, and a light guiding system.

[0040] Mechanical System: Composed of the microscope tube 3, optical cone 5, eyepiece 9, and eyepiece cover 8, etc. The connections between the microscope tube 3 and all parts of the microscope body are seamlessly laser-welded, ensuring the overall airtightness of the microscope. The microscope body and eyepiece cover 8 are tightened and sealed using precision instruments, preventing them from falling off or leaking air during use. The microscope tube and objective lens are sealed using adhesive or welding techniques, preventing leakage during use. Objective lenses using metal welding techniques offer even better sealing.

[0041] The optical system consists of an objective lens 2, optical lenses, and an eyepiece 9. Objective lens 2 determines the cystoscope's angle of view and field of view, and is responsible for image acquisition. The lens group transmits the image, and eyepiece 9 magnifies the image and transmits it through the eyepiece cover 8. The incident light rays of the object's image first pass through the objective lens glass and then propagate parallel to the objective lens. The angle between the incident light ray entering the objective lens and the horizontal line is the angle of view; cystoscope angles are generally 0°, 12°, 30°, 70°, 90°, etc. The range that the objective lens can observe is called the field of view. The field of view of a cystoscope is generally divided into wide-angle and standard angle. Wide-angle cystoscopes are suitable for cystoscopes with larger cavities, such as laparoscopes, hysteroscopes, and cystoscopes; standard angle cystoscopes are used for cystoscopes with smaller cavities, such as those used in transurethral resection of the prostate (TURP).

[0042] Light guiding system: Composed of filamentous light guiding fibers. The light guiding system consists of very thin optical fibers, the main function of which is to conduct light. One end of the fiber optic system is connected to the light cone 5 of the cystoscope, and the other end is connected to the objective lens 2. Light exits the cystoscope from the objective lens end, illuminating the inside of the body. Both the light guiding system and the optical system are assembled entirely by hand.

[0043] Imaging direction of a rigid optical lens: objective lens glass - objective lens - cylindrical lens group - eyepiece - eyepiece cover.

[0044] Image transmission direction: Hard lens - Camera - Camera cable - Host - Video cable - Monitor.

[0045] The structure of the rotatable filter to prevent light leakage is as follows: The bearing cavity is composed of an inner bearing ring 21, an outer bearing ring 22, an upper bearing cover plate 18, and a lower bearing cover plate 23. Rollers 20 are placed inside the cavity, forming a single bearing. The filter is attached to the inner bearing ring 21, not exceeding the upper edge of the upper cover plate and the lower edge of the lower cover plate. This ensures that the filter does not affect the rotation of the cystoscope and that the filter does not tilt or leak light when rotated.

[0046] To address the issue of varying space available for placing filters in different cystoscope models, a ring made of soft material is attached to the upper cover plate 18 and the lower cover plate 23 of the bearing. The thickness of the bearing is designed according to the space of the thinnest cystoscope, and the soft material is elastic, which can ensure that both the thinnest and thickest spaces can be accommodated without affecting rotation or leaking laser light.

[0047] It should be noted that although several units / modules or sub-units / modules of the device have been mentioned in the detailed description above, this division is merely exemplary and not mandatory. In fact, according to embodiments of the present invention, the features and functions of two or more units / modules described above can be embodied in one unit / module. Conversely, the features and functions of one unit / module described above can be further divided and embodied by multiple units / modules.

[0048] While the spirit and principles of the invention have been described with reference to several specific embodiments, it should be understood that the invention is not limited to the disclosed specific embodiments, and the division of aspects does not imply that features in these aspects cannot be combined for benefit; such division is merely for ease of description. The invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A cystoscope with a filter assembly, characterized in that, The cystoscope includes a filter assembly (10), which includes a bearing upper cover plate (18), a filter (19), a roller (20), an inner bearing ring plate (21), an outer bearing ring plate (22), and a lower bearing cover plate (23). The inner bearing ring plate (21) is nested inside the outer bearing ring plate (22). The bearing upper cover plate (18) and the lower bearing cover plate (23) cover the two sides of the outer bearing ring plate (22), respectively. The inner bearing ring plate (21), the outer bearing ring plate (22), the bearing upper cover plate (18), and the lower bearing cover plate (23) form the bearing cavity of the filter assembly (10). The roller (20) is placed in the bearing cavity. The bearing cavity with the roller (20) is the bearing of the filter assembly (10). The filter (19) is attached to the inner bearing ring plate (21). The height of the filter (19) attached to the inner ring plate (21) of the bearing does not exceed the upper edge of the upper cover plate (18) and the lower edge of the lower cover plate (23) of the bearing; The number of rollers (20) is at least two; The cystoscope also includes an eyepiece cover (8) and a base (12). The base (12) and the eyepiece cover (8) are tightened and sealed by a precision instrument. The thickness of the bearing of the filter assembly (10) does not exceed the space reserved between the eyepiece cover (8) and the base (12) for the filter assembly (10). A first soft material washer (17) and a second soft material washer (24) are respectively attached to the upper cover plate (18) and the lower cover plate (23) of the bearing. The first soft material washer (17) and the second soft material washer (24) are used to increase the friction to prevent the filter assembly (10) from rotating when the cystoscope is twisted, and their soft material is used to adapt to the different reserved space size inside different models of cystoscopes.

2. The cystoscope according to claim 1, characterized in that, The filter (19) is attached to the inner ring plate (21) of the bearing, and the upper edge of the upper cover plate (18) and the lower edge of the lower cover plate (23) of the bearing hold the filter (19).

3. The cystoscope according to claim 1, characterized in that, The roller (20) being placed in the bearing cavity means that the roller (20) is placed in the cavity between the inner ring plate (21) and the outer ring plate (22) of the bearing.

4. The cystoscope according to claim 1, characterized in that, The number of rollers (20) is four.

5. The cystoscope according to claim 1, characterized in that, The cystoscope also includes an objective lens (2) and a tube (3). The objective lens (2) and the tube (3) are sealed and fixedly connected by adhesive or welding technology. The tube (3) and the various parts of the cystoscope body are connected by laser seamless welding.

6. The cystoscope according to any one of claims 1 to 5, characterized in that, The cystoscope can filter specific wavelengths of laser light to prevent light leakage from the sides.

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