A reverse gastroscope for preventing missed diagnosis of gastric cancer
By using a reverse-viewing endoscope design, the lens can be rotated 180 degrees and the length of the flexible tube can be controlled, which solves the problem of blind spots in the field of view of traditional endoscopes and improves the detection rate of early gastric cancer.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN MEDICAL UNIVERSITY GENERAL HOSPITAL
- Filing Date
- 2025-03-10
- Publication Date
- 2026-06-05
AI Technical Summary
Traditional gastroscopy can only provide a single-direction field of view, resulting in blind spots in the complex anatomical structure of the stomach, making it difficult to detect early gastric cancer.
A retrograde gastroscope designed to prevent missed diagnoses of gastric cancer has been developed. Through the combination of control mechanisms and connectors on the operating table, the lens can be rotated 180 degrees and the length of the flexible tube can be flexibly controlled, thereby enhancing the flexibility and coverage of observation.
It enables flexible detection of the complex structure of the gastrointestinal tract, reducing the risk of missing early gastric cancer and increasing the probability of early detection.
Smart Images

Figure CN224320700U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of reverse-viewing gastroscopy technology, and in particular to a reverse-viewing gastroscopy for preventing missed diagnosis of gastric cancer. Background Technology
[0002] Stomach cancer is one of the most common malignant tumors worldwide, with persistently high incidence and mortality rates. If stomach cancer is not detected and treated in its early stages, the consequences are often severe. The five-year survival rate for patients with advanced stomach cancer is relatively low, and the treatment process is complex and painful, placing a huge economic and psychological burden on patients and their families.
[0003] Early-stage gastric cancer has a much better treatment outcome than late-stage gastric cancer. If gastric cancer can be detected and treated in its early stages, the five-year survival rate can reach over 90%. However, because early-stage gastric cancer often lacks obvious symptoms, many patients are already in the late stage when diagnosed, missing the best time for treatment. Therefore, retrograde gastroscopy is necessary for timely detection and treatment.
[0004] Traditional gastroscopy typically provides only a single-direction field of view. During the examination, due to the complex anatomy of the stomach, there are some areas that are difficult to observe directly, such as the lesser curvature and the posterior wall of the stomach. These areas can easily become blind spots, leading to the omission of some lesions. Utility Model Content
[0005] To overcome the above shortcomings, this invention provides a retrograde gastroscopy to prevent missed diagnosis of gastric cancer, aiming to improve the problem that traditional gastroscopes in the prior art can usually only provide a single-direction field of view.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: A retrograde gastroscope for preventing missed diagnosis of gastric cancer includes an operating table and a connector three. A sphere is rotatably connected to the middle of the inner wall of the operating table. A connecting shaft two is fixed to the outer wall of the sphere. A semi-circular plate is fixedly connected to the other end of the connecting shaft two. A locking port is opened inside the right end of the connector three. A rotating shaft one is fixedly connected to the inside of the right end of the connector three. A connector two is rotatably connected to the outer wall of the rotating shaft one. A rotating shaft two is fixedly connected to the other end of the connector two. A connector one is rotatably connected to the other end of the rotating shaft two. A detection lens is fixedly connected to the top of the outer wall of the connector one. An auxiliary lens is fixedly connected to the middle of the outer wall of the connector one. A control mechanism is installed on the bottom right side of the operating table. The control mechanism is used to control the length.
[0007] As a further description of the above technical solution:
[0008] The control mechanism includes a first wheel, the outer left side of which is mounted on the bottom right side of the operating table. A disc is rotatably connected to the center of the first wheel, and a connecting shaft is fixedly connected to the center right side of the disc. A gear is fixedly connected to the outer wall of the disc, and a baffle is fixedly connected to the outer right side of the disc. A metal sleeve is fixedly connected to the top of the baffle, and a spring is fixedly connected inside the metal sleeve. A metal shaft is fixedly connected to the other end of the spring, and a locking tooth is fixedly connected to the top of the metal shaft. A second wheel is fixedly connected to the outer right side of the gear.
[0009] As a further description of the above technical solution:
[0010] A handle is fixedly connected to the bottom of the operating table, and an anti-slip sleeve is fixedly connected to the outer wall of the handle.
[0011] As a further description of the above technical solution:
[0012] A fixed column is fixedly connected to the rear side of the outer wall of the operating table, and an outlet is fixedly connected to the bottom of the fixed column.
[0013] As a further description of the above technical solution:
[0014] A flexible tube is fixedly connected to the bottom inner wall of the outlet, and a tapered bayonet is slidably connected to the middle of the outer wall of the flexible tube.
[0015] As a further description of the above technical solution:
[0016] A placement platform is fixedly connected to the bottom of the grip, and a fixing sleeve is fixedly connected to the middle of the outer wall of the operating platform.
[0017] As a further description of the above technical solution:
[0018] A bracket is fixedly connected to the left outer wall of the first wheel, and a connecting plate is fixedly connected to the other end of the first connecting shaft.
[0019] As a further description of the above technical solution:
[0020] A handle is fixedly connected to the right side of the outer wall of the connecting plate, and an anti-slip sleeve is fixedly connected to the middle of the outer wall of the handle.
[0021] This utility model has the following beneficial effects:
[0022] 1. In this utility model, the device is controlled by a semi-circular plate on the operating table to control the detection device installed on the other end of the flexible hose, which is rotatably connected to connector two. The tail of connector two engages with connector three, thereby realizing 180-degree rotation detection of the front lens. A rotating shaft two is also rotatably connected to the front end of connector two, which makes the reverse-viewing gastroscope more flexible and able to easily pass through the complex structure of the gastrointestinal tract.
[0023] 2. In this utility model, the device is driven to rotate by the rotation of the internal connecting shaft, and a locking tooth is installed on the front side of the outer wall of the disc. The device can be locked at different positions on the gear, thereby realizing the control of the length of the hose. Attached Figure Description
[0024] Figure 1 This is a three-dimensional view of the front side of a reverse-viewing gastroscopy operating table for preventing missed diagnosis of gastric cancer proposed in this utility model.
[0025] Figure 2 This is a partial structural diagram of a retrograde gastroscopy tube for preventing missed diagnosis of gastric cancer proposed in this utility model;
[0026] Figure 3 This is a structural exploded view of the inverted gastroscope connector 2 for preventing missed diagnosis of gastric cancer proposed in this utility model;
[0027] Figure 4 This is a partial structural diagram of the gears in a retrograde gastroscope for preventing missed diagnosis of gastric cancer proposed in this utility model.
[0028] Figure 5 This is a partial structural diagram of a retrograde endoscope spring for preventing missed diagnosis of gastric cancer proposed in this utility model.
[0029] Legend:
[0030] 1. Operating table; 2. Control mechanism; 201. Wheel one; 202. Wheel two; 203. Gear; 204. Baffle; 205. Disc; 206. Connecting shaft one; 207. Gear; 208. Metal sleeve; 209. Spring; 210. Metal shaft; 3. Connector three; 4. Rotating shaft one; 5. Auxiliary lens; 6. Probe lens; 7. Connector one; 8. Rotating shaft two; 9. Connector two; 10. Clamping port; 11. Semicircular plate; 12. Connecting shaft two; 13. Ball; 14. Fixing sleeve; 15. Bracket; 16. Fixing column; 17. Anti-slip sleeve one; 18. Placement platform; 19. Hoses; 20. Conical clamp; 21. Handle; 22. Connecting plate; 23. Handle; 24. Anti-slip sleeve two; 25. Outlet. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0032] Please see the appendix Figure 1 - Appendix Figure 3 This utility model provides an embodiment of a retrograde gastroscopy for preventing missed diagnosis of gastric cancer, comprising an operating table 1 and a connector 3. A spherical ball 13 is rotatably connected to the middle of the inner wall of the operating table 1, and a connecting shaft 12 is fixed to the outer wall of the spherical ball 13. A semi-circular plate 11 is fixedly connected to the other end of the connecting shaft 12. The operating table 1 has a rotatably connected spherical ball 13 in the middle of its inner wall, and a connecting shaft 12 is fixedly installed on the outer wall of this spherical ball 13. The other end of the connecting shaft 12 is firmly connected to a semi-circular plate 11. A locking slot 10 is opened inside the right end of the connector 3, and a rotating shaft is fixedly connected inside the right end of the connector 3. 4. A second connector 9 is rotatably connected to the outer wall of the rotating shaft 4. The other end of the second connector 9 is fixedly connected to the second rotating shaft 8. The other end of the second rotating shaft 8 is rotatably connected to the first connector 7. A detection lens 6 is fixedly connected to the top of the outer wall of the first connector 7. A rotating connection structure is provided on the outer wall of the rotating shaft 4, which allows the rotating shaft 4 to be rotatably connected to the second connector 9. The other end of the second connector 9 is designed to be fixedly connected to the second rotating shaft 8, ensuring the stability of the second rotating shaft 8. The other end of the second rotating shaft 8 is connected to the first connector 7 through a rotating connection, allowing the first connector 7 to rotate flexibly. Finally, a detection lens 6 is fixedly connected to the top of the outer wall of the first connector 7. This detection lens 6 can perform accurate detection through the rotation of the first connector 7. Auxiliary lenses 5 are fixedly connected to the middle of the outer wall of the first connector 7. A control mechanism 2 is installed on the bottom right side of the operating table 1. The control mechanism 2 is used to control the length.
[0033] Specifically, the inner wall of the operating table 1 is designed to rotatably connect to a sphere 13. A connecting shaft 2 12 is fixedly installed on the outer wall of this sphere 13, and a semi-circular plate 11 is fixedly connected to the other end of the connecting shaft 2 12. In addition, a locking port 10 is specially opened inside the right end of the connector 3 for connecting with other components. A rotating shaft 1 4 is also fixedly connected inside the right end of the connector 3. A connector 2 9 is rotatably connected to the outer wall of the rotating shaft 1 4, and a rotating shaft 2 8 is fixedly connected to the other end of the connector 2 9. A probe lens 6 is fixedly connected to the top of the outer wall of the connector 1 7 for capturing image information. Multiple auxiliary lenses 5 are evenly fixedly connected to the middle of the outer wall of the connector 1 7 to enhance the range and effect of image capture. Finally, a control mechanism 2 is installed on the bottom right side of the operating table 1. This control mechanism 2 is a device specifically used to control the length of the entire device, ensuring that each component can be flexibly extended, retracted, and adjusted.
[0034] Please see the appendix Figure 4 - Appendix Figure 5 The control mechanism 2 includes a wheel 201. The left side of the outer wall of the wheel 201 is mounted on the bottom right side of the operating table 1. A disc 205 is rotatably connected to the middle of the wheel 201. A connecting shaft 206 is fixedly connected to the middle right side of the disc 205. A gear 207 is fixedly connected to the outer wall of the disc 205. The middle of the wheel 201 is connected to the disc 205 by a rotatable connection. Specifically, the middle right side of the disc 205 is fixedly connected to the connecting shaft 206, ensuring that the disc 205... To enhance stability and reliability, and further strengthen the connection between wheel 201 and disc 205, a baffle 204 is fixedly connected to the right outer wall of disc 205. A metal sleeve 208 is fixedly connected to the top of baffle 204, and a spring 209 is fixedly connected inside the metal sleeve 208. A metal shaft 210 is fixedly connected to the other end of the spring 209, and a retaining tooth 203 is fixedly connected to the top of the metal shaft 210. Inside the metal sleeve 208, a spring 209 is firmly fixedly connected. The other end of this spring 209 is tightly connected to a metal shaft 210, and a retaining tooth 203 is also fixedly connected to the top part of the metal shaft 210. Wheel 202 is fixedly connected to the right outer wall of gear 207.
[0035] Specifically, a disc 205 is rotatably connected to the center of a wheel 201, meaning there is a freely rotatable connection between the wheel 201 and the disc 205, ensuring flexible relative movement between them. Furthermore, a connecting shaft 206 is fixedly connected to the center right side of the disc 205, indicating a strong fixed relationship between the connecting shaft 206 and the disc 205, allowing the disc 205 to be stably supported and positioned via the connecting shaft 206. To achieve the transmission function, a gear 207 is fixedly connected to the outer wall of the disc 205. Thus, gear 207... A transmission mechanism is formed between 07 and the disc 205, so that the rotation of the disc 205 can be transmitted to other components through the gear 207. In addition, a baffle 204 is fixedly connected to the outer right side of the disc 205. The function of the baffle 204 is to prevent certain components or objects from slipping off or spilling from the disc 205, providing a physical barrier. In order to further enhance the function of the baffle 204, a metal sleeve 208 is fixedly connected to the top of the baffle 204. A spring 209 is fixedly connected inside the metal sleeve 208. The presence of the spring 209 gives the metal sleeve 208 a certain degree of elasticity.
[0036] Please see the appendix Figure 1 - Appendix Figure 3 A handle 21 is fixedly connected to the bottom of the control panel 1, and an anti-slip sleeve 17 is fixedly connected to the outer wall of the handle 21. A handle 23 is fixedly connected to the right side of the outer wall of the connecting plate 22. The bottom part of the control panel 1 is designed to be firmly connected to the handle 21. This design allows the user to hold the device more stably and comfortably when operating the control panel 1. To further improve the grip comfort and anti-slip effect, an anti-slip sleeve 17 is specially fixedly connected to the outer wall of the handle 21. An anti-slip sleeve 24 is fixedly connected to the middle of the outer wall of the handle 23. A bracket is fixedly connected to the left outer wall of the wheel 201. 15. A connecting plate 22 is fixedly connected to the other end of the connecting shaft 206. A placement platform 18 is fixedly connected to the bottom of the handle 21. A fixing sleeve 14 is fixedly connected to the middle of the outer wall of the operating table 1. A flexible hose 19 is fixedly connected to the bottom inner wall of the outlet 25. A fixing sleeve 14 is also connected to the middle of the outer wall of the operating table 1 through a reliable fixing method. The function of this fixing sleeve 14 is to better fix and protect the middle of the outer wall of the flexible hose 19 of the operating table 1. A conical bayonet 20 is slidably connected to the middle of the outer wall of the operating table 1. A fixing post 16 is fixedly connected to the rear side of the outer wall of the operating table 1. The outlet 25 is fixedly connected to the bottom of the fixing post 16.
[0037] Specifically, the bottom of the control panel 1 is designed to be firmly connected to the handle 21. A non-slip sleeve 17 is fixedly installed on the outer wall of the handle 21 to ensure that the user can grip the control panel 1 more securely during use. In addition, a handle 23 is also fixedly connected to the right side of the outer wall of the connecting plate 22, making it easier for the user to adjust and move the control panel 1. On the left side of the control panel 1, a bracket 15 is fixedly connected to the left side of the outer wall of the wheel 201 to provide additional support and stability. The connecting shaft 2... The other end of 06 is fixedly connected to the connecting plate 22 to ensure the stability of the entire structure. In order to facilitate the user to place some small objects when using the operating table 1, a placement platform 18 is also fixedly connected to the bottom of the handle 21. Finally, a fixing column 16 is fixedly connected to the rear side of the outer wall of the operating table 1 to provide additional support and stability. The bottom of the fixing column 16 is fixedly connected to the outlet 25 to ensure the integrity and functionality of the entire system. The model of the operating table 1 is PNOZ, and the model of the detection lens 6 is GIF-2TH180.
[0038] Working principle: The device is controlled by a semi-circular plate 11 on the operating table 1, which controls a detection device installed on the other end of the flexible tube 19. The device is connected to a rotating shaft 4 fixed at the front end of connector 3, which is rotatably connected to connector 9. The tail of connector 9 is engaged and rotatably connected to connector 3, thereby realizing 180-degree rotation detection of the front lens. A rotating shaft 8 is also rotatably connected to the front end of connector 9. The device can control the free rotation of connector 7 at its front end. The detection lens 6 and multiple auxiliary lenses 5 are fixed inside the top of connector 3 for detection. This makes the reverse-viewing gastroscope more flexible and can easily pass through the complex structure of the gastrointestinal tract, while realizing observation from different angles.
[0039] The device is driven by the rotation of the internal connecting shaft 206, which in turn drives the disk 205 to rotate. A locking tooth 203 is installed on the front side of the outer wall of the disk 205. The device can lock onto different positions on the gear 207, thereby controlling the length of the hose 19 wrapped around the outside of the gear 207. At the same time, it can also quickly retract the hose when the test ends.
[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A retrograde gastroscope for preventing missed diagnosis of gastric cancer, comprising an operating table (1) and a connector (3), characterized in that: A sphere (13) is rotatably connected to the middle of the inner wall of the operating table (1). A connecting shaft (12) is fixed to the outer wall of the sphere (13). A semi-circular plate (11) is fixedly connected to the other end of the connecting shaft (12). A locking port (10) is opened inside the right end of the connector (3). A rotating shaft (4) is fixedly connected to the inside of the right end of the connector (3). A connector (9) is rotatably connected to the outer wall of the rotating shaft (4). A rotating shaft (8) is fixedly connected to the other end of the connector (9). A connector (7) is rotatably connected to the other end of the rotating shaft (8). A detection lens (6) is fixedly connected to the top of the outer wall of the connector (7). An auxiliary lens (5) is fixedly connected to the middle of the outer wall of the connector (7). A control mechanism (2) is installed on the bottom right side of the operating table (1). The control mechanism (2) is used to control the length.
2. The retrograde gastroscopy for preventing missed diagnosis of gastric cancer according to claim 1, characterized in that: The control mechanism (2) includes a first wheel (201), the outer left side of which is mounted on the bottom right side of the operating table (1). A disc (205) is rotatably connected to the middle of the first wheel (201). A connecting shaft (206) is fixedly connected to the middle right side of the disc (205). A gear (207) is fixedly connected to the outer wall of the disc (205). A baffle (204) is fixedly connected to the outer right side of the disc (205). A metal sleeve (208) is fixedly connected to the top of the baffle (204). A spring (209) is fixedly connected inside the metal sleeve (208). A metal shaft (210) is fixedly connected to the other end of the spring (209). A locking tooth (203) is fixedly connected to the top of the metal shaft (210). A second wheel (202) is fixedly connected to the outer right side of the gear (207).
3. The retrograde gastroscopy for preventing missed diagnosis of gastric cancer according to claim 1, characterized in that: The bottom of the operating table (1) is fixedly connected to a handle (21), and the outer wall of the handle (21) is fixedly connected to an anti-slip sleeve (17).
4. A retrograde gastroscopy for preventing missed diagnosis of gastric cancer according to claim 1, characterized in that: A fixed column (16) is fixedly connected to the rear side of the outer wall of the operating table (1), and an outlet (25) is fixedly connected to the bottom of the fixed column (16).
5. A retrograde gastroscopy for preventing missed diagnosis of gastric cancer according to claim 4, characterized in that: A flexible tube (19) is fixedly connected to the bottom inner wall of the outlet (25), and a conical bayonet (20) is slidably connected to the middle of the outer wall of the flexible tube (19).
6. A retrograde gastroscopy for preventing missed diagnosis of gastric cancer according to claim 3, characterized in that: The bottom of the grip (21) is fixedly connected to a placement platform (18), and the middle of the outer wall of the operating table (1) is fixedly connected to a fixing sleeve (14).
7. A retrograde gastroscopy for preventing missed diagnosis of gastric cancer according to claim 2, characterized in that: A bracket (15) is fixedly connected to the left outer wall of the first wheel (201), and a connecting plate (22) is fixedly connected to the other end of the first connecting shaft (206).
8. A retrograde gastroscopy for preventing missed diagnosis of gastric cancer according to claim 7, characterized in that: A handle (23) is fixedly connected to the right side of the outer wall of the connecting plate (22), and an anti-slip sleeve (24) is fixedly connected to the middle of the outer wall of the handle (23).