A metering endoscope capable of absorbing air bubbles

Abstract

This invention provides a metering endoscope capable of absorbing air bubbles, comprising an endoscope body, a bracket at the bottom of the endoscope body, and a handle fixedly connected to the bottom of the bracket. An inner chamber is located inside the handle, and a hydrophobic and breathable plate is movably installed in the center of the inner chamber. Several baffles are evenly distributed in a straight line along one side of the hydrophobic and breathable plate and one inner wall of the inner chamber, with the two sets of baffles being staggered. By setting staggered baffles and hydrophobic and breathable plates with hydrophobic and breathable properties in the inner chamber, air bubbles are caused to rise and burst by the baffles. The hydrophobic and breathable plates, which allow only gas to pass through while blocking liquid, actively discharge residual air bubbles to the other side of the inner chamber, achieving efficient absorption of air bubbles in the distension fluid. The structure is simple. Simultaneously, flow sensors are symmetrically distributed on both sides of the hydrophobic and breathable plates, enabling real-time monitoring of fluid inflow and outflow, providing accurate fluid balance data for surgery.

Description

Technical Field

[0001] This invention belongs to the field of surgical instrument technology, specifically relating to a metering endoscope that can absorb air bubbles. Background Technology

[0002] Hysteroscopic surgery is an important minimally invasive gynecological procedure. During the procedure, a distending fluid is continuously instilled into the uterine cavity to expand it and provide a clear view. However, the instillation fluid often contains a large number of air bubbles. These bubbles can originate from various sources, including loose tubing connections, low fluid levels in the infusion bag leading to air being pumped in, and vaporized bubbles generated during the electrolysis of the instillation medium by the high-frequency electrosurgical loop. If these bubbles enter the uterine cavity with the instillation fluid, the gas can enter the bloodstream through open sinuses in the endometrium, causing the serious complication of venous air embolism, which can even lead to sudden death.

[0003] Among existing bubble removal devices, hydrophobic membrane solutions are costly and prone to clogging, while gravity settling chambers are large and have stringent requirements for posture. In terms of influent and effluent measurement, manual visual inspection has large errors, and a single flow meter cannot monitor the actual outfluent volume. Furthermore, bubble removal and measurement functions are independent of each other, the pipelines are complex and prone to tangling, and there is a lack of real-time automatic alarm for the difference between influent and effluent, making it difficult for medical staff to detect excessive fluid absorption in a timely manner. Summary of the Invention

[0004] To achieve the above objectives, the technical solution of the present invention is implemented as follows: This invention provides a metering endoscope capable of absorbing air bubbles, comprising an endoscope body, a bracket at the bottom of the endoscope body, a handle fixedly connected to the bottom of the bracket, an inner chamber inside the handle, a hydrophobic and breathable plate movably installed in the center of the inner chamber, a plurality of baffles evenly distributed in a straight line on one side of the hydrophobic and breathable plate and one inner sidewall of the inner chamber, and the two sets of baffles are staggered, with the baffles on the side away from the inner chamber sidewall fixedly connected to the hydrophobic and breathable plate.

[0005] As a preferred technical solution of this application, a guide groove is provided on the rear surface of the handle, and a sliding adjustment key is fixedly connected to the rear end of the hydrophobic and breathable plate through the guide groove.

[0006] As a preferred technical solution of this application, two flow sensors are fixedly connected in a symmetrical and uniform manner below the front surface of the handle, and the two flow sensors are distributed on both sides of the hydrophobic and breathable plate through the handle.

[0007] As a preferred technical solution of this application, a water inlet pipe is fixedly connected to one side of the bracket, and a water outlet pipe is fixedly connected to the other side of the bracket. The other ends of the water inlet pipe and the water outlet pipe both penetrate the bracket and are installed on the outer wall of the mirror body.

[0008] As a preferred technical solution of this application, two control buttons are provided in the middle of the front surface of the handle, and a protective arc plate is provided in the front section of the handle.

[0009] As a preferred technical solution of this application, an inlet interface is provided on one side of the bottom of the handle, and a drain interface is provided on the other side of the bottom of the handle. The other ends of the inlet interface and the drain interface pass through the handle and are located on both sides of the hydrophobic and breathable plate.

[0010] As a preferred technical solution of this application, a lens tube is fixedly connected to the front section of the lens body, and a light source interface is fixedly connected to the bottom of the lens body.

[0011] As a preferred technical solution of this application, an eyepiece is fixedly connected to the rear end of the lens body, and a rubber cover is fixedly connected to the tail end of the eyepiece.

[0012] As a preferred technical solution of this application, the baffle is a rectangular plate, the length direction of which is consistent with the height direction of the inner cavity, and the spacing between adjacent baffles is 5-10mm. The hydrophobic and breathable plate is vertically arranged in the middle of the inner cavity, the front and rear edges of the hydrophobic and breathable plate are sealed and fitted with the front and rear inner walls of the inner cavity, and the mesh diameter of the hydrophobic and breathable plate is 0.5-1mm.

[0013] As a preferred technical solution of this application, a bypass branch pipe is fixedly connected to the middle of one side of the water inlet pipe, and the other end of the bypass branch pipe passes through the bottom of the handle and is located inside the inner cavity, and is close to the inlet port.

[0014] Compared with existing technologies, by setting staggered baffles and hydrophobic and breathable plates with hydrophobic and breathable properties in the inner chamber, the baffles cause the bubbles to float and burst, and the hydrophobic and breathable plates allow only gas to pass through while blocking liquid, so that the residual bubbles are actively discharged to the other side of the inner chamber, thus achieving efficient absorption of bubbles in the distending fluid. The structure is simple. Compared with existing technologies, the hydrophobic and breathable plate can be moved horizontally by sliding adjustment keys, realizing the pure mechanical switching between the two sets of baffles in staggered distribution and overlapping closure. The liquid flow path can be changed without the aid of tools. The operation is intuitive and the positioning is accurate, effectively reducing the complexity and time cost of intraoperative adjustment. Compared with existing technologies, by setting a bypass branch pipe on one side of the inlet pipe and linking it with the side edge of the hydrophobic and breathable plate, the bypass is automatically opened when switching to the overlapping closed state, allowing the irrigation fluid to bypass the baffle and the hydrophobic and breathable plate and directly enter the endoscope body, which significantly reduces fluid resistance and meets the needs of rapid flushing of the uterine cavity or emergency emptying. Compared with existing technologies, by retaining the continuous operation of two flow sensors in both modes, the liquid inflow and outflow can be monitored in real time, whether in the high-efficiency defoaming and metering state or the rapid flushing emergency state, ensuring that the liquid balance data is continuously readable and providing a reliable guarantee for preventing liquid overload. Attached Figure Description

[0015] Figure 1 This invention relates to a three-dimensional structure of a metering endoscope capable of absorbing air bubbles. Figure 1 ; Figure 2 This invention relates to a three-dimensional structure of a metering endoscope capable of absorbing air bubbles. Figure 2 ; Figure 3 This is a partial cross-section of a metering endoscope capable of absorbing air bubbles according to the present invention. Figure 1 ; Figure 4 This is a partial structural diagram of a metering endoscope capable of absorbing air bubbles according to the present invention. Figure 5 This is a partial cross-section of a metering endoscope capable of absorbing air bubbles according to the present invention. Figure 2 ; Figure 6 for Figure 5 Enlarged view of point A in the middle; Figure 7 This is a schematic diagram of the defoaming process of a metering endoscope capable of absorbing air bubbles according to the present invention; Figure 8 This is a schematic diagram of the closing of the flushing tubing of a metering endoscope capable of absorbing air bubbles according to the present invention. Explanation of reference numerals in the attached diagram: 1. Body; 2. Tube; 3. Light source interface; 4. Eyepiece; 5. Rubber cover; 6. Bracket; 7. Handle; 8. Guide groove; 9. Hydrophobic and breathable plate; 10. Baffle plate; 11. Outlet pipe; 12. Inlet pipe; 13. Inlet interface; 14. Drain interface; 15. Control button; 16. Flow sensor; 17. Protective arc plate; 18. Inner chamber; 19. Sliding adjustment key; 20. Bypass branch pipe. Detailed Implementation

[0016] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0017] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6A metering endoscope capable of absorbing air bubbles includes an endoscope body 1, a bracket 6 located below the endoscope body 1, a handle 7 fixedly connected below the bracket 6, and an inner chamber 18 inside the handle 7. A hydrophobic and breathable plate 9 is movably installed in the middle of the inner chamber 18. Several baffles 10 are evenly distributed in a straight line on one side of the hydrophobic and breathable plate 9 and one inner sidewall of the inner chamber 18, and the two sets of baffles 10 are staggered. The baffles 10 on the side away from the sidewall of the inner chamber 18 are fixedly connected to the hydrophobic and breathable plate 9. Before use in surgery, the distending fluid inlet 13 is connected to the irrigation pump, and the drain inlet 14 is connected to the negative pressure suction and waste fluid collection device. The injection fluid enters the inner chamber 18 of the handle 7 through the inlet 13. It first flows through the area of ​​the baffle 10 on one side of the hydrophobic and breathable plate 9. Due to the staggered distribution of the two baffles 10, the liquid is forced to flow along an S-shaped or zigzag path within the inner chamber 18, slowing the flow rate. Air bubbles entrained in the liquid gradually rise and burst under the influence of buoyancy and the collision with the baffles 10. Because the hydrophobic and breathable plate 9 is a special hydrophobic and breathable material that blocks liquid but allows gas to pass through, the air bubbles burst on the surface of the hydrophobic and breathable plate 9. Gas passes through the mesh to the other side, while the liquid is effectively blocked on the original side of the hydrophobic and breathable plate 9. After defoaming treatment, the expanded... The uterine fluid enters the endoscope body 1 through the inlet pipe 12 on one side of the bracket 6, and is injected into the uterine cavity through the endoscope tube 2. The waste fluid in the uterine cavity flows back to the inner chamber 18 of the handle 7 through the outlet pipe 11 on the other side of the endoscope body 1, and is discharged through the drain port 14 on the other side of the hydrophobic and breathable plate 9. During the inlet and outlet of the fluid, the flow sensors 16 located on both sides of the hydrophobic and breathable plate 9 detect the volume of the inflow and outflow of the fluid in real time, and transmit the signal to the external or internal processing unit, thereby realizing the accurate measurement of the inflow and outflow of fluid. The control button 15 can be used for system reset or parameter setting, and the protective arc plate 17 can protect the button and sensor from accidental touch.

[0018] By arranging staggered baffles 10 and hydrophobic and breathable plates 9 with hydrophobic and breathable properties in the inner chamber 18, the baffles 10 cause air bubbles to rise and burst, while the hydrophobic and breathable plates 9, which only allow gas to pass through while blocking liquid, actively discharge residual air bubbles to the other side of the inner chamber 18. This achieves efficient absorption of air bubbles in the distension fluid, and the structure is simple. Simultaneously, flow sensors 16 are symmetrically distributed on both sides of the hydrophobic and breathable plates 9, enabling real-time monitoring of fluid inflow and outflow, providing accurate fluid balance data for surgery, and effectively preventing air embolism and fluid overload syndrome.

[0019] Furthermore, such as Figure 2 and Figure 3As shown, a guide groove 8 is provided on the rear surface of the handle 7. A sliding adjustment key 19 is fixedly connected to the rear end of the hydrophobic and breathable plate 9 through the guide groove 8. By moving the sliding adjustment key 19, the hydrophobic and breathable plate 9 can slide horizontally in the inner cavity 18, thereby changing the position of the set of baffles 10 fixedly connected to the hydrophobic and breathable plate 9 relative to another set of fixed baffles 10 on the inner side wall of the inner cavity 18, realizing the mechanical switching of two working modes: mode one is an interleaved distribution state, and mode two is an overlapping closed state. In the overlapping closed state, the front ends of the two sets of baffles 10 contact each other or overlap, so that the liquid flow path is mechanically blocked, forcing the liquid to pass through the bypass branch pipe 20.

[0020] Furthermore, such as Figure 3 , Figure 5 and Figure 6 As shown, a bypass branch pipe 20 is fixedly connected to the middle of one side of the inlet pipe 12. The other end of the bypass branch pipe 20 passes through the bottom end of the handle 7 and enters the inner chamber 18, with the opening position close to the inlet port 13. When the hydrophobic vent plate 9 is in an overlapping closed state, the inlet of the bypass branch pipe 20 is completely exposed to the liquid inlet area of ​​the inlet port 13, and the liquid can directly enter the inlet pipe 12 through the bypass branch pipe 20, bypassing the baffle plate 10 and the area of ​​the hydrophobic vent plate 9. When the hydrophobic vent plate 9 is in an alternating distribution state, the side edge of the hydrophobic vent plate 9 just blocks the inlet of the bypass branch pipe 20, preventing the liquid from entering the bypass branch pipe 20.

[0021] Furthermore, such as Figure 4 As shown, two flow sensors 16 are symmetrically and evenly distributed and fixedly connected below the front surface of the handle 7. The two flow sensors 16 pass through the handle 7 and are distributed on both sides of the hydrophobic and breathable plate 9. This symmetrical layout makes the measurement paths of liquid inlet and liquid outlet independent of each other, avoids cross interference, and improves the accuracy of measurement.

[0022] Furthermore, such as Figure 3 and Figure 4 As shown, a water inlet pipe 12 is fixedly connected to one side of the bracket 6, and a water outlet pipe 11 is fixedly connected to the other side of the bracket 6. The other ends of the water inlet pipe 12 and the water outlet pipe 11 both pass through the bracket 6 and are installed on the outer wall of the endoscope 1. This structure achieves a stable connection between the liquid pipeline and the endoscope 1, avoiding pipeline entanglement during surgery.

[0023] Furthermore, such as Figure 2 and Figure 4 As shown, two control buttons 15 are provided in the middle of the front surface of the handle 7, and a protective arc plate 17 is provided in the front section of the handle 7. The control buttons 15 can be used to zero, start the metering or confirm the alarm, and the protective arc plate 17 can prevent accidental touch during operation.

[0024] Furthermore, such as Figure 3 and Figure 5As shown, the bottom of the handle 7 has an inlet port 13 on one side and a drain port 14 on the other side. The other ends of the inlet port 13 and the drain port 14 pass through the handle 7 and are located on both sides of the hydrophobic and breathable plate 9. The inlet port 13 is for the uterine distension fluid to enter, and the drain port 14 is for the waste liquid to be discharged. The two are located on both sides of the hydrophobic and breathable plate 9 respectively.

[0025] Furthermore, such as Figure 1 and Figure 2 As shown, the endoscope tube 2 is fixedly connected to the front section of the endoscope body 1, and the light source interface 3 is fixedly connected to the bottom of the endoscope body 1. The light source interface 3 is used to connect a cold light source to provide illumination for the surgery.

[0026] Furthermore, such as Figure 1 and Figure 2 As shown, an eyepiece 4 is fixedly connected to the rear end of the microscope body 1, and a rubber cover 5 is fixedly connected to the tail end of the eyepiece 4. The rubber cover 5 can fit the eye, improve observation comfort and prevent light leakage. Example

[0027] The metering endoscope with absorbable bubbles provided in Example 1 has been further optimized, specifically, as follows: Figure 3 , Figure 5 and Figure 6 As shown, the baffle 10 is a rectangular plate with its length direction aligned with the height direction of the inner chamber 18, and the spacing between adjacent baffles 10 is 5 to 10 mm. The rectangular plate design increases the contact area with the air bubbles, making it easier for the floating air bubbles to adhere and break. The spacing of 5 to 10 mm ensures sufficient collisions without excessively increasing the resistance to liquid flow, thus ensuring a stable injection flow rate.

[0028] Furthermore, such as Figure 3 , Figure 5 and Figure 6 As shown, the hydrophobic and breathable plate 9 is vertically positioned in the center of the inner chamber 18. The front and rear edges of the hydrophobic and breathable plate 9 are sealed against the front and rear inner walls of the inner chamber 18, and the mesh size of the hydrophobic and breathable plate 9 is 0.5–1 mm. This vertical positioning allows gas molecules to pass through the mesh while the liquid surface tension prevents liquid permeation, achieving selective passage of bubbles. The 0.5–1 mm pore size, after special hydrophobic treatment, effectively blocks liquid under normal injection pressure while allowing gas in the bubbles to escape smoothly to the other side. The sealed fit of the front and rear edges ensures that all liquid must pass through the area of ​​the baffle plate 10 and cannot short-circuit, ensuring the integrity of the defoaming process.

[0029] Furthermore, such as Figure 5 and Figure 6As shown, a bypass branch pipe 20 is fixedly connected to the middle of one side of the inlet pipe 12. The other end of the bypass branch pipe 20 passes through the bottom of the handle 7 and is located inside the inner chamber 18, and is close to the inlet port 13. When the sliding adjustment key 19 drives the hydrophobic and breathable plates 9 to be in an alternating distribution state, the side edge of the hydrophobic and breathable plates 9 blocks the inlet of the bypass branch pipe 20. After the liquid is defoamed by the baffle plate 10, it enters the inlet pipe 12. When it is in an overlapping and closed state, the hydrophobic and breathable plates 9 are moved away, and at the same time the front ends of the two sets of baffle plates 10 are closed. The liquid directly enters the inlet pipe 12 through the bypass branch pipe 20 to achieve rapid rinsing.

[0030] Working principle: Pattern 1: Interleaved Distribution Before the procedure begins, the inlet port 13 is connected to the uterine distension pump, and the drain port 14 is connected to the negative suction bottle. The operator moves the sliding adjustment key 19 to one end of the guide groove 8, so that the hydrophobic and breathable plate 9 is in the middle position. At this time, a set of baffles 10 fixedly connected to the hydrophobic and breathable plate 9 and another set of fixed baffles 10 on the inner wall of the inner chamber 18 are staggered, and the side edge of the hydrophobic and breathable plate 9 just blocks the inlet of the bypass branch pipe 20. After the uterine distension pump is started, the distension fluid enters the inner chamber 18 through the inlet port 13 and is forced to flow along an S-shaped path through the area of ​​the staggered baffles 10, such as... Figure 7 Larger bubbles rise to the surface and collide with the baffle plate 10, breaking apart. Subsequently, the liquid flows through the hydrophobic and breathable plate 9, where residual microbubbles break apart on the surface of the hydrophobic and breathable plate 9. Gas passes through the mesh and enters the other side of the inner chamber 18, while the liquid is blocked on the original side. After sufficient defoaming, the liquid enters the endoscope 1 through the inlet pipe 12 and then enters the uterine cavity through the endoscope tube 2. Waste liquid in the uterine cavity flows back to the other side of the inner chamber 18 through the outlet pipe 11 and is discharged through the drain port 14. The flow sensor 16 detects the volume of inflow and outflow of liquid in real time. When the difference exceeds the safety threshold, an alarm is triggered. This mode is suitable for routine surgery, providing the best bubble absorption effect and accurate liquid measurement. Mode 2: Overlapping Closed State When it is necessary to quickly flush blood clots and tissue fragments from the uterine cavity, or to urgently expel air and reduce uterine cavity pressure, the operator moves the sliding adjustment key 19 to the other end of the guide groove 8, pushing the hydrophobic and breathable plate 9 inward. This causes a set of baffles 10 fixedly connected to the hydrophobic and breathable plate 9 to contact or overlap with the front end of the fixed baffle 10 on the opposite side, forming an overlapping and closed state. Figure 8The liquid flow path is mechanically blocked. At the same time, the side edge of the hydrophobic and breathable plate 9 is moved away, exposing the inlet of the bypass branch pipe 20. After the distending fluid enters from the inlet port 13, it cannot pass through the baffle plate area and instead directly enters the bypass branch pipe 20. It then quickly enters the endoscope body 1 and the uterine cavity through the inlet pipe 12. The fluid resistance is significantly reduced and the irrigation speed is greatly increased. In this mode, the baffle plate 10 and the hydrophobic and breathable plate 9 are bypassed, the defoaming function is temporarily turned off, and the flow sensor 16 still works normally. This mode is used for short-term emergency scenarios. After the flushing is completed, the sliding adjustment key 19 can be turned back to the mode one position to restore the normal defoaming and metering function.

[0031] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of protection of this application is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0032] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.

Claims

1. A metering endoscope capable of absorbing air bubbles, characterized in that, The device includes a mirror body (1), a bracket (6) is provided below the mirror body (1), a handle (7) is fixedly connected below the bracket (6), an inner cavity (18) is provided inside the handle (7), a hydrophobic and breathable plate (9) is movably installed in the middle of the inner cavity (18), a number of baffles (10) are evenly distributed in a straight line on one side of the hydrophobic and breathable plate (9) and one inner side wall of the inner cavity (18), and the two sets of baffles (10) are staggered. The baffle (10) on the side away from the side wall of the inner cavity (18) is fixedly connected to the hydrophobic and breathable plate (9).

2. The metering endoscope with absorbable bubbles according to claim 1, characterized in that, The handle (7) has a guide groove (8) on its rear surface, and the hydrophobic and breathable plate (9) has a sliding adjustment key (19) fixedly connected to the rear end through the guide groove (8).

3. The metering endoscope with absorbable bubbles according to claim 1, characterized in that, Two flow sensors (16) are symmetrically and evenly distributed and fixedly connected below the front surface of the handle (7), and the two flow sensors (16) pass through the handle (7) and are distributed on both sides of the hydrophobic and breathable plate (9).

4. The metering endoscope with absorbable bubbles according to claim 1, characterized in that, A water inlet pipe (12) is fixedly connected to one side of the bracket (6), and a water outlet pipe (11) is fixedly connected to the other side of the bracket (6). The other ends of the water inlet pipe (12) and the water outlet pipe (11) both pass through the bracket (6) and are installed on the outer wall of the mirror body (1).

5. The metering endoscope with absorbable bubbles according to claim 1, characterized in that, Two control buttons (15) are provided in the middle of the front surface of the handle (7), and a protective arc plate (17) is provided in the front section of the handle (7).

6. The metering endoscope with absorbable bubbles according to claim 1, characterized in that, The handle (7) has an inlet port (13) on one side of its bottom and a drain port (14) on the other side of its bottom. The other ends of the inlet port (13) and the drain port (14) pass through the handle (7) and are located on both sides of the hydrophobic and breathable plate (9).

7. The metering endoscope with absorbable bubbles according to claim 1, characterized in that, The front section of the mirror body (1) is fixedly connected to a mirror tube (2), and the bottom of the mirror body (1) is fixedly connected to a light source interface (3).

8. The metering endoscope with absorbable bubbles according to claim 1, characterized in that, An eyepiece (4) is fixedly connected to the rear end of the lens body (1), and a rubber cover (5) is fixedly connected to the tail end of the eyepiece (4).

9. The metering endoscope with absorbable bubbles according to claim 1, characterized in that, The baffle (10) is a rectangular plate, the length direction of which is consistent with the height direction of the inner cavity (18), and the distance between adjacent baffles (10) is 5 to 10 mm. The hydrophobic and breathable plate (9) is vertically arranged in the middle of the inner cavity (18), and the front and rear edges of the hydrophobic and breathable plate (9) are sealed and fitted with the front and rear inner walls of the inner cavity (18). The mesh diameter of the hydrophobic and breathable plate (9) is 0.5 to 1 mm.

10. The metering endoscope with absorbable bubbles according to claim 1, characterized in that, A bypass branch pipe (20) is fixedly connected to the middle of one side of the water inlet pipe (12). The other end of the bypass branch pipe (20) passes through the bottom of the handle (7) and is located inside the inner cavity (18), and is close to the side of the inlet port (13).

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