Measuring device under medical endoscope

Abstract

The utility model discloses a medical endoscope lower measuring device which comprises a control connecting block and a catheter, the bottom of the control connecting block is fixedly connected with the catheter, a hollow cylinder is fixedly arranged at the top of the control connecting block, an adjusting assembly is arranged in the hollow cylinder, and a scale groove is formed in the outer side of the hollow cylinder. A cold light source interface and a video interface are formed in the side face of the control connecting block, a working part is arranged at the bottom of the guide pipe, and the working part comprises an illumination light source, a camera and an extension section; the lighting source is connected with the cold light source interface through a light guide, the camera is connected with the video interface through a video guide, the top end of the extension section is connected with an adjusting assembly through a guide rod, and the adjusting assembly drives the extension section to stretch at the bottom of the guide pipe; the propelling unit is arranged at the upper part of the hollow cylinder, so that the guide rod and the inverted-V-shaped bougie are slowly moved out, the ear canal or the tympanic membrane is prevented from being damaged due to too fast extension, and the safety and the accuracy of measurement are ensured in a narrow ear canal space; the stability in the measurement process is enhanced, and the measurement effect is ensured.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a medical endoscope measuring device. Background Technology

[0002] In traditional endoscopic tympanoplasty, surgeons often lack effective tools to accurately measure the size and shape of the tympanic membrane perforation. This leads to insufficient estimation of cartilage size during surgery, and may even necessitate re-harvesting, increasing surgical trauma and risks. Furthermore, the prolonged surgery time not only increases surgical, anesthesia, and health insurance costs, but also raises the risk of infection and postoperative complications.

[0003] Chinese patent document (publication number: CN210144651U) discloses a tympanic membrane perforation measuring device, relating to the technical field of medical measuring instruments. The tympanic membrane perforation measuring device includes a handle and a soft, transparent measuring disc. The end of the handle away from the soft, transparent measuring disc is for the medical staff to hold, while the end of the handle near the soft, transparent measuring disc is detachably connected to it. The soft, transparent measuring disc is inserted into the patient's external auditory canal to measure the area and shape of the tympanic membrane perforation. This invention solves the problems of existing tympanic membrane perforation measuring devices, such as the probe tip and probe easily causing damage to the patient's external auditory canal; the inaccurate data due to the one-dimensional measurement of length values; and the fact that the handle of this invention is for the medical staff to hold, the soft, transparent measuring disc is detachably connected to the handle for easy replacement, the soft, transparent measuring disc does not damage the patient's external auditory canal or tympanic membrane, and the two-dimensional measurement method makes the measurement data more comprehensive and accurate.

[0004] In the existing technology, when measuring the tympanic membrane in the ear canal, the measuring device needs to be equipped with additional lighting and image acquisition devices, which takes up a lot of space, is complicated to operate, and the measured values ​​are not stable. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a medical endoscopic measuring device. The working part of the measuring device is equipped with a light source and a camera, eliminating the need for separate lighting and camera configuration during measurement, thus saving space and simplifying operation. The propulsion unit uses threaded or ratchet limiting to lock the measurement values, enhancing the stability and accuracy of the measurement.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] To address the shortcomings of existing technologies, this utility model provides a medical endoscopic measuring device, comprising a control connecting block and a catheter. The bottom of the control connecting block is fixedly connected to the catheter, and a hollow column is fixedly mounted on the top of the control connecting block. An adjustment component is disposed inside the hollow column, and a scale groove is disposed on the outer side of the hollow column. A cold light source interface and a video interface are respectively disposed on the side of the control connecting block. A working part is disposed at the bottom of the catheter, and the working part includes an illumination source, a camera, and an extension section. The illumination source is connected to the cold light source interface through a light guide, the camera is connected to the video interface through a video guide, and the top of the extension section is connected to the adjustment component through a guide rod. The adjustment component drives the extension section to extend and retract at the bottom of the catheter.

[0008] As a preferred technical solution of this utility model, the extended section is an inverted V flexible probe.

[0009] As a preferred technical solution of this utility model, the adjustment component includes a propulsion unit disposed on the upper part of the hollow column, the bottom of the propulsion unit slidably abutting against a guide block, the guide block being slidably installed in a groove inside the hollow column, the side of the guide block being provided with a limiting protrusion and a scale needle, and the bottom of the guide block being installed with a reset spring; the limiting protrusion slides up and down in the limiting groove inside the hollow column, and the scale needle moves up and down in the scale groove.

[0010] As a preferred technical solution of this utility model, the propulsion unit is a threaded propulsion unit, which includes an internal threaded hole and an external threaded head. The external threaded head is adapted to the internal threaded hole, and a top plate is fixed at the top of the external threaded head. Twisting the top plate drives the external threaded head to move downward in the internal threaded hole, thereby pushing the guide block and the extension section to extend downward.

[0011] As a preferred technical solution of this utility model, the propulsion unit is a ratchet propulsion unit, which includes ratchet teeth, a ratchet, and a top plate. A pressing column is fixed at the bottom end of the top plate, and ratchet teeth are arranged axially on the side wall of the pressing column. The upper part of the hollow column is configured with a hollow cylindrical hole, and the pressing column is slidably installed in the hollow cylindrical hole. A ratchet is arranged on one side of the hollow cylindrical hole, and the ratchet and ratchet teeth form a limiting fit. A limiting spring is installed between the ratchet and the hollow column, and a reset rod is arranged on one side of the ratchet. When the top plate is pressed down, the top plate pushes the guide block and the extension section to extend downward.

[0012] As a preferred embodiment of this invention, the optical guide is an illumination optical fiber; the video guide is a video optical fiber.

[0013] As a preferred technical solution of this utility model, and taking into account both children and adults, the diameter of the catheter is set to 2.5-5mm.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In this utility model, the working part of the measuring device is equipped with a light source for illumination and a camera for image acquisition. When measuring the size of the tympanic membrane perforation, it avoids the need to configure additional lighting and camera, reducing equipment, saving space, simplifying operation, and facilitating measurement in a narrow ear canal space.

[0016] 2. In this utility model, a propulsion unit is set at the upper part of the hollow column, and a scale groove is set on the outer side of the hollow column. By adjusting the propulsion unit to move downward, the inverted V-shaped probe of the extension section driven by the guide rod extends out to measure the perforation of the tympanic membrane. The propulsion unit adopts threaded limit or pawl limit, which enhances the stability during the measurement process and ensures the accuracy and effect of the measurement.

[0017] 3. In this utility model, the propulsion unit adopts a threaded propulsion unit. By finely adjusting the thread, the guide block is pressed down, so that the guide rod and the inverted V-shaped probe are slowly moved out, avoiding the inverted V-shaped probe from extending too quickly and damaging the ear canal or tympanic membrane. This ensures the safety of the measurement in the narrow space of the ear canal. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the overall assembly structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the working part structure at the bottom end of the catheter of this utility model;

[0020] Figure 3 This is a three-dimensional schematic diagram of the cross-sectional structure of the catheter of this utility model;

[0021] Figure 4 This is a three-dimensional schematic diagram of the overall installation structure of the adjustment component of this utility model;

[0022] Figure 5 This is a three-dimensional schematic diagram of the disassembled structure of the adjustment component of this utility model;

[0023] In the diagram: 11. Control connection block; 12. Cold light source interface; 13. Video interface; 14. Hollow cylinder; 15. Top plate; 16. Conduit; 17. Working part; 18. Lighting source; 19. Extension section; 20. Camera; 21. Lighting fiber optic cable; 22. Guide rod; 23. Video fiber optic cable; 24. Return spring; 25. Guide block; 26. External thread head; 27. Scale needle; 28. Scale groove; 29. ​​Internal thread hole; 30. Slide groove; 31. Limiting groove; 32. Limiting protrusion. Detailed Implementation

[0024] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0025] Example 1:

[0026] like Figures 1-5 As shown, a medical endoscopic measuring device includes a control connection block 11 and a catheter 16. The bottom of the control connection block 11 is fixedly connected to the catheter 16, and a hollow column 14 is fixedly mounted on the top of the control connection block 11. An adjustment component is disposed inside the hollow column 14, and a scale groove 28 is disposed on the outer side of the hollow column 14. A cold light source interface 12 and a video interface 13 are respectively disposed on the side of the control connection block 11. A working part 17 is disposed at the bottom of the catheter 16. The working part 17 includes an illumination source 18, a camera 20, and an extension section 19. The illumination source 18 is connected to the cold light source interface 12 through a light guide, and the camera 20 is connected to the video interface 13 through a video guide. The top of the extension section 19 is connected to the adjustment component through a guide rod 22, and the adjustment component drives the extension section 19 to extend and retract at the bottom of the catheter 16.

[0027] In this invention, the cold light source interface 12 is connected to an external cold light source generator, which transmits light to the lighting source 18 through the lighting optical fiber 21 to provide illumination to the bottom of the working part 17; the video interface 13 is connected to an external video receiver and display screen to display the image at the bottom of the working part 17, which is beneficial for measuring the size of the tympanic membrane perforation.

[0028] Among them, the lighting fiber optic cable 21, the video interface 13, the cold light source generator, the video receiver, and the display screen are all commercially available and belong to existing technologies, so they will not be described in detail here.

[0029] In this invention, the working part of the measuring device is equipped with a light source for illumination and a camera for image acquisition. When measuring the size of the tympanic membrane perforation, it avoids the need for additional lighting and a camera, reducing equipment, saving space, simplifying operation, and facilitating measurement in a narrow ear canal.

[0030] Furthermore, the extended section 19 is an inverted V-shaped flexible probe.

[0031] The extension section 19 is an inverted V flexible probe, or it can be a shape memory alloy with an inverted V structure, with the inverted V flexible probe being preferred.

[0032] The extension section 19 has an inverted V-shaped structure. When the extension section 19 is subjected to downward pressure and extends out of the conduit 16, the inverted V-shaped opening of the extension section 19 increases. As the extension amount changes, the size of the inverted V-shaped opening changes accordingly. The length of the inverted V-shaped probe opening corresponds to the value specified by the scale needle 27 in the scale groove 28. In other words, the size of the tympanic membrane perforation measured by the inverted V-shaped probe opening is reflected by the cooperation of the scale groove 28 and the scale needle 27.

[0033] Furthermore, the adjustment assembly includes a propulsion unit disposed on the upper part of the hollow column 14. The bottom of the propulsion unit slides against a guide block 25. The guide block 25 is slidably installed in a groove 30 inside the hollow column 14. A limiting protrusion 32 and a scale needle 27 are provided on the side of the guide block 25. A return spring 24 is installed at the bottom of the guide block 25. The limiting protrusion 32 slides up and down in a limiting groove 31 inside the hollow column 14, and the scale needle 27 moves up and down in a scale groove 28.

[0034] Figure 4 and Figure 5 As shown, a return spring 24 is installed at the bottom of the slide groove 30, and a guide block 25 is slidably installed at the upper part of the slide groove 30. When the guide block 25 is subjected to an axial force, the return spring 24 facilitates the return movement of the guide block 25.

[0035] A propulsion unit is installed at the top of the hollow cylinder, and a scale groove is installed on the outside of the hollow cylinder. By adjusting the downward movement of the propulsion unit, the inverted V-shaped probe of the extension section is extended by the guide rod to measure the perforation of the tympanic membrane. The propulsion unit adopts threaded or ratchet limiting to enhance the stability during the measurement process and ensure the measurement effect.

[0036] The limiting protrusion 32 on the side of the guide block 25 slides up and down inside the limiting groove 31 to play a radial limiting role; the scale groove 28 connects the slide groove 30 with the outside, one end of the scale needle 27 is fixedly installed on the guide block 25, and the other end of the scale needle 27 can move up and down in the scale groove 28 to reflect the measured value.

[0037] Furthermore, the propulsion unit is a threaded propulsion unit, which includes an internal threaded hole 29 and an external threaded head 26. The external threaded head 26 is adapted to the internal threaded hole 29, and a top plate 15 is fixed at the top of the external threaded head 26. Twisting the top plate 15 drives the external threaded head 26 to move downward within the internal threaded hole 29, thereby pushing the guide block 25 and the extension section 19 to extend downward.

[0038] The propulsion unit adopts a threaded propulsion unit, which uses fine-tuning threads to press down the guide block, so that the guide rod and the inverted V-shaped probe are slowly moved out, avoiding the inverted V-shaped probe from extending too quickly and damaging the ear canal or tympanic membrane, thus ensuring the safety of the measurement in the narrow space of the ear canal.

[0039] When the top plate 15 is screwed down, the external thread head 26 moves downward in the internal thread hole 29. The bottom end of the external thread head 26 presses the guide block 25 downward, driving the guide rod 22 and the extension section 19 to move downward together. The inverted V-shaped opening of the extension section 19 is used for measurement.

[0040] Furthermore, the light guide is an illumination fiber 21; the video guide is a video fiber 23.

[0041] The light guide can be an illumination fiber 21 or a liquid light guide, preferably an illumination fiber 21; the liquid light guide is a light guide that uses high-purity silicone oil, special mineral oil or optical-grade glycerin solution.

[0042] The video guide can be a video optical fiber 23 or a wireless transmission system, preferably a video optical fiber 23; the wireless transmission system is connected through a miniature wireless module.

[0043] Furthermore, the diameter of the catheter 16 is 3-5 mm.

[0044] The diameter, depth, and size of the external auditory canal vary among individuals.

[0045] The diameter of an adult's external auditory canal is typically 6-8 millimeters, but this value can vary from 5 to 10 millimeters. The diameter of the tympanic membrane is generally 8-10 millimeters. The tympanic membrane is approximately elliptical in shape, and its size and shape can affect hearing and sound conduction.

[0046] In this invention, the diameter of the catheter 16 is set to 3-5 mm, which is suitable for adults; when it is suitable for children, the diameter of the catheter 16 is set to 2.5-3 mm.

[0047] Example 2

[0048] Unlike the threaded propulsion unit of the propulsion unit, the threaded propulsion unit is replaced by a pawl propulsion unit. The pawl propulsion unit includes ratchet teeth, pawls, and a top plate 15. A pressing column is fixed at the bottom end of the top plate 15, and ratchet teeth are arranged axially on the side wall of the pressing column. The upper part of the hollow column 14 is configured with a hollow cylindrical hole, and the pressing column is slidably installed in the hollow cylindrical hole. A pawl is arranged on one side of the hollow cylindrical hole, and the pawl and ratchet teeth form a limiting engagement. A limiting spring is installed between the pawl and the hollow column 14, and a reset rod is arranged on one side of the pawl. When the top plate 15 is pressed down, the top plate 15 pushes the guide block 25 and the extension section 19 to extend downward.

[0049] When the pawl propulsion unit is working, it applies downward pressure to the top plate 15. The downward pressure column at the bottom of the top plate 15 presses the guide block 25 downward, causing it to move downward. The guide block 25 drives the guide rod 22 and the extension section 19 to move downward together. The inverted V-shaped opening of the extension section 19 is used for measurement.

[0050] The mechanism employs a pawl to limit the downward pressure column, which can move freely downwards in the hollow cylindrical hole, while the pawl restricts its upward movement. By activating the reset rod, the pawl is displaced, releasing the restriction on the ratchet teeth on the downward pressure column. Under the action of the reset spring 24, the downward pressure column moves upwards to reset.

[0051] When in use, first connect the cold light source interface 12 to an external cold light source generator, connect the video interface 13 to an external video receiver and display screen, and insert the cannula 16 into the ear canal so that the working part at the bottom of the cannula 16 is above the tympanic membrane.

[0052] Then, adjust the propulsion unit on the hollow column 14 to move the guide block 25 downward. The guide rod 22 below the guide block 25 drives the inverted V flexible probe to extend outward. When the width of the inverted V flexible probe opening is consistent with the width of the tympanic membrane perforation opening, record the value of the scale needle 27 corresponding to the scale groove 28.

[0053] This utility model is illustrated through the above embodiments, but it is not limited to these embodiments, meaning that it does not necessarily depend on them for implementation. Those skilled in the art should understand that all related improvements to this utility model fall within its protection and disclosure scope.

Claims

1. A medical endoscopic measuring device comprising a control connection block (11) and a catheter (16), characterized in that, The bottom of the control connection block (11) is fixedly connected to the conduit (16), and the top of the control connection block (11) is fixedly provided with a hollow column (14). An adjustment component is provided inside the hollow column (14), and a scale groove (28) is provided on the outside of the hollow column (14). A cold light source interface (12) and a video interface (13) are respectively provided on the side of the control connection block (11). A working part (17) is provided at the bottom of the conduit (16). The working part (17) includes an illumination source (18), a camera (20), and an extension section (19). The illumination source (18) is connected to the cold light source interface (12) through a light guide. The camera (20) is connected to the video interface (13) through a video guide. The top of the extension section (19) is connected to the adjustment component through a guide rod (22). The adjustment component drives the extension section (19) to extend and retract at the bottom of the conduit (16).

2. The medical endoscopic measuring device according to claim 1, characterized in that, The extended section (19) is an inverted V-shaped flexible probe.

3. The medical endoscopic measuring device according to claim 2, characterized in that, The adjustment assembly includes a propulsion unit disposed on the upper part of the hollow column (14). The bottom of the propulsion unit slides against a guide block (25). The guide block (25) is slidably installed in a groove (30) inside the hollow column (14). A limiting protrusion (32) and a scale needle (27) are provided on the side of the guide block (25). A reset spring (24) is installed at the bottom of the guide block (25). The limiting protrusion (32) slides up and down in the limiting groove (31) inside the hollow column (14), and the scale needle (27) moves up and down in the scale groove (28).

4. The medical endoscopic measuring device according to claim 3, characterized in that, The propulsion unit is a threaded propulsion unit, which includes an internal threaded hole (29) and an external threaded head (26). The external threaded head (26) is adapted to the internal threaded hole (29), and a top plate (15) is fixed at the top of the external threaded head (26). Twisting the top plate (15) drives the external threaded head (26) to move downward in the internal threaded hole (29), thereby pushing the guide block (25) and the extension section (19) to extend downward.

5. The medical endoscopic measuring device according to claim 3, characterized in that, The propulsion unit is a pawl propulsion unit, which includes ratchet teeth, pawls, and a top plate (15). A pressing column is fixed at the bottom end of the top plate (15), and ratchet teeth are arranged along the axial direction on the side wall of the pressing column. The upper part of the hollow column (14) is configured as a hollow cylindrical hole, and the pressing column is slidably installed in the hollow cylindrical hole. A pawl is arranged on one side of the hollow cylindrical hole, and the pawl and ratchet teeth form a limiting fit. A limiting spring is installed between the pawl and the hollow column (14), and a reset rod is arranged on one side of the pawl. When the top plate (15) is pressed down, the top plate (15) pushes the guide block (25) and the extension section (19) to extend downward.

6. The medical endoscopic measuring device according to claim 2, characterized in that, The optical guide is an illumination optical fiber (21); the video guide is a video optical fiber (23).

7. The medical endoscopic measuring device according to claim 2, characterized in that, The diameter of the catheter (16) is 3-5 mm.

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