Calculus taking-out device for surgical operation
This stone removal device, which uses a micro-motor-driven screw and gear meshing system and a pressure sensor to control the force, solves the problems of unstable handling of large stones and manual operation, and achieves efficient and safe stone removal.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 王晓
- Filing Date
- 2025-01-15
- Publication Date
- 2026-05-08
AI Technical Summary
In existing technologies, smaller stones are better removed, but larger stones are less effective. Furthermore, the manual grasping force required by medical staff is difficult to control, which can easily lead to stone breakage and staff fatigue.
The device employs a screw and gear meshing system driven by a micro motor to move the stone-removing clamp to remove large stones. The clamping force is controlled by a pressure sensor, while a vacuum cleaner is used to remove small stones, reducing manual operation.
It enables stable removal of large stones, avoids fragmentation, reduces the workload of medical staff, and improves the efficiency and safety of stone removal.
Smart Images

Figure CN224206862U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of surgical technology, specifically to a surgical stone removal device. Background Technology
[0002] Surgical stone removal devices are designed to effectively and safely remove stones from a patient's body. Stones can form in multiple organs, including the kidneys, gallbladder, bladder, and ureters, and can cause severe pain, urinary tract obstruction, infection, and even serious complications.
[0003] Publication number CN 219397453 U discloses a clinical stone removal device for hepatobiliary surgery, including an operating cylinder. A connecting rod is installed inside the operating cylinder. A movable block is sleeved on one side of the connecting rod, and a pressure rod is installed on one side of the movable block. A positioning block is sleeved on the other side of the connecting rod. A second spring is installed on the opposing surfaces of the movable block and the positioning block. A clamping rod is installed on one side of both the movable block and the positioning block. A semi-circular clamping cover is installed at one end of the clamping rod extending beyond a through hole. A stone collection box contains a stone suction structure. Through the semi-circular clamping cover and the stone suction mechanism, the clamping plate drives the semi-circular clamping cover to clamp the stone, and then a suction head is used to remove the stone. The stones are drawn into the stone collection box through a flexible tube, while a baffle prevents backflow. After the procedure, the stones are removed all at once through a silicone plug. This eliminates the need to use forceps to remove stones one by one during surgery, significantly improving the efficiency of the device and reducing the workload and intensity for doctors. However, the suction structure is good for smaller stones but less effective for larger ones. Larger stones require manual clamping, which is difficult to control and can cause them to break. Furthermore, prolonged clamping can lead to fatigue for staff. Utility Model Content
[0004] To address the aforementioned technical problems, this invention provides a surgical stone removal device that is convenient for removing smaller stones but less effective for larger stones. It also solves the problems of relying on the clamping force of medical personnel's hands for removal, which makes it difficult to control the force, causing stone fragmentation, and causing fatigue for personnel during prolonged clamping.
[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a surgical stone removal device, comprising a shell and a stone grasping module. A battery is provided on the left side of the inner cavity of the shell, and a baffle is provided on the right side of the battery. The stone grasping module is disposed inside the shell and includes a movable frame and a screw. The two ends of the screw are rotatably connected to the two ends of the inner side of the movable frame, respectively. Threaded blocks are threaded to both ends of the surface of the screw. Stone retrieval clamps are fixedly connected to the bottom ends of the two threaded blocks. Pressure sensors are provided on the inner ends of the two stone retrieval clamps. A driven gear is fixedly connected to the middle of the screw. A micro motor is installed at the bottom end of the movable frame. A driving gear is connected to the output end of the micro motor. The driving gear and the driven gear mesh with each other. A handle is connected to the left side of the shell. The handle is provided with an electric telescopic rod control button, a micro motor control button, and a vacuum cleaner control button.
[0006] As an improvement, a miniature camera and a light are respectively installed on the upper and lower left sides of the mobile frame, and the battery powers the miniature camera and the light, making it convenient to observe the condition of the stones.
[0007] As an improvement, the baffle is fixedly connected to the inner wall of the outer shell, and an electric telescopic rod is fixedly connected to the right side of the baffle. The output end of the electric telescopic rod is fixedly connected to the right side of the movable frame, driving the movable frame to move, making the device more practical.
[0008] As an improvement, a storage box is fixedly connected to the upper end of the outer shell, a vacuum cleaner is fixedly installed on the left side of the inner cavity of the storage box, a delivery hose is fixedly connected to the right side of the storage box, suction heads are provided on both sides of the right end of the inner cavity of the outer shell, the other end of the delivery hose is fixedly connected to the two suction heads, and a sealing plug is also provided on the storage box to collect small stones.
[0009] As an improvement, the upper and lower sides of the inner cavity of the outer shell are provided with sliding grooves, and sliders are slidably provided in the two sliding grooves. One end of each slider is fixedly connected to the upper and lower sides of the movable frame, making the movement of the movable frame more stable.
[0010] As an improvement, the casing is provided with a charging port for charging the battery.
[0011] The advantages of this invention compared to existing technologies are as follows: by setting a micro motor, the active gear and the driven gear mesh with each other, driving the screw to rotate, which in turn drives the two stone retrieval clamps to move in opposite directions to pick up large stones. The pressure sensor can sense the pressure of the contact stone to avoid excessive pressure that could cause the stone to break and cause secondary infection. By setting a vacuum cleaner, small stones can be sucked into the storage box, eliminating the need for medical staff to manually pick them up. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this utility model.
[0013] Figure 2 This is a schematic diagram of the internal structure of this utility model.
[0014] Figure 3 This is a schematic diagram of the storage box and conveying hose of this utility model.
[0015] Figure 4 This is a left-side view of the mobile frame of this utility model.
[0016] As shown in the figure: 1. Outer shell; 2. Handle; 3. Electric telescopic rod control button; 4. Miniature motor control button; 5. Vacuum cleaner control button; 6. Battery; 7. Baffle; 8. Stone grasping module; 801. Moving frame; 802. Screw; 803. Threaded block; 804. Stone grasping clamp; 805. Pressure sensor; 806. Miniature motor; 807. Drive gear; 808. Driven gear; 9. Electric telescopic rod; 10. Slide; 11. Slider; 12. Charging port; 13. Miniature camera; 14. Lighting lamp; 15. Storage box; 16. Vacuum cleaner; 17. Delivery hose; 18. Nozzle head. Detailed Implementation
[0017] The present invention will now be described in further detail with reference to the accompanying drawings.
[0018] This utility model combines [the following techniques] when removing stones. Figures 1 to 4 A surgical stone removal device includes a housing 1 and a stone grasping module 8. A battery 6 is located on the left side of the inner cavity of the housing 1, and a baffle 7 is located on the right side of the battery 6. The stone grasping module 8 is disposed inside the housing 1 and includes a movable frame 801 and a screw 802. Both ends of the screw 802 are rotatably connected to the inner ends of the movable frame 801. Threaded blocks 803 are threaded to both ends of the surface of the screw 802. Stone retrieval clamps 804 are fixedly connected to the bottom ends of both threaded blocks 803. Pressure sensors 805 are located on the inner ends of both stone retrieval clamps 804. A driven gear 808 is fixedly connected to the middle of the screw 802. A micro motor 806 is installed at the bottom of the mobile frame 801. The output end of the micro motor 806 is connected to a drive gear 807. The drive gear 807 meshes with the driven gear 808. Slide grooves 10 are provided on both the upper and lower sides of the inner cavity of the outer shell 1. Slider 11 is slidably installed in both slide grooves 10. One end of each slider 11 is fixedly connected to the upper and lower sides of the mobile frame 801, making the movement of the mobile frame 801 more stable. A handle 2 is connected to the left side of the outer shell 1. The handle 2 is equipped with an electric telescopic rod control button 3, a micro motor control button 4, and a vacuum cleaner control button 5. A charging port 12 is provided on the outer shell 1 to charge the battery 6.
[0019] The baffle 7 is fixedly connected to the inner wall of the outer shell 1. An electric telescopic rod 9 is fixedly connected to the right side of the baffle 7. The output end of the electric telescopic rod 9 is fixedly connected to the right side of the mobile frame 801, which drives the mobile frame 801 to move, making the device more practical. A miniature camera 13 and a light 14 are respectively installed on the upper and lower left sides of the mobile frame 801. The battery 6 powers the miniature camera 13 and the light 14, making it convenient to observe the condition of the stones.
[0020] A storage box 15 is fixedly connected to the upper end of the outer shell 1. A vacuum cleaner 16 is fixedly installed on the left side of the inner cavity of the storage box 15. A delivery hose 17 is fixedly connected to the right side of the storage box 15. Suction heads 18 are provided on both sides of the right end of the inner cavity of the outer shell 1. The other end of the delivery hose 17 is fixedly connected to the two suction heads 18. A sealing plug is also provided on the storage box 15, which can collect small stones.
[0021] In actual use, when the outer casing 1 is placed inside the body to remove stones, medical staff hold the handle 2 and observe the location of the stones through the miniature camera 13 and the light 14. By controlling the electric telescopic rod 9 with the electric telescopic rod control button 3, the moving frame 801 moves downward, causing the two stone retrieval clamps 804 to move downward to the appropriate position. By controlling the miniature motor 806 with the miniature motor control button 4, the driving gear 807 rotates. The driving gear 807 and the driven gear 808 mesh with each other, causing the screw 802 to rotate, causing the two threaded blocks 803 to move in opposite directions, and causing the two stone retrieval clamps 804 to move in opposite directions to grasp large stones. The pressure sensor 805 can sense the pressure on the stones. When the pressure exceeds the set value, the miniature motor 806 will shut off to prevent the stones from breaking due to excessive pressure and causing secondary infection. At the same time, by controlling the vacuum cleaner with the vacuum cleaner control button 5, the vacuum cleaner is started. Small stones are sent into the storage box 15 through the suction head 18 and the delivery hose 17, completing the removal of the stones.
[0022] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. A surgical stone removal device, comprising a housing (1) and a stone grasping module (8), characterized in that: A battery (6) is provided on the left side of the inner cavity of the outer shell (1), and a baffle (7) is provided on the right side of the battery (6). The stone-grabbing module (8) is disposed inside the outer shell (1). The stone-grabbing module (8) includes a movable frame (801) and a screw (802). The two ends of the screw (802) are respectively rotatably connected to the two ends of the inner side of the movable frame (801). Threaded blocks (803) are threaded to both ends of the surface of the screw (802). Stone-removing clamps (804) are fixedly connected to the bottom ends of the two threaded blocks (803). 04) Pressure sensors (805) are provided on the inner end of each screw (802). A driven gear (808) is fixedly connected in the middle of the screw (802). A micro motor (806) is installed at the bottom of the moving frame (801). The output end of the micro motor (806) is connected to the driving gear (807). The driving gear (807) and the driven gear (808) mesh with each other. A handle (2) is connected to the left side of the outer shell (1). An electric telescopic rod control button (3), a micro motor control button (4) and a vacuum cleaner control button (5) are provided on the handle (2).
2. The surgical stone removal device according to claim 1, characterized in that: A miniature camera (13) and a lighting lamp (14) are respectively installed on the upper and lower left sides of the mobile frame (801), and the battery (6) supplies power to the miniature camera (13) and the lighting lamp (14).
3. The surgical stone removal device according to claim 1, characterized in that: The baffle (7) is fixedly connected to the inner wall of the outer shell (1), and an electric telescopic rod (9) is fixedly connected to the right side of the baffle (7). The output end of the electric telescopic rod (9) is fixedly connected to the right side of the movable frame (801).
4. The surgical stone removal device according to claim 1, characterized in that: A storage box (15) is fixedly connected to the upper end of the outer shell (1). A vacuum cleaner (16) is fixedly installed on the left side of the inner cavity of the storage box (15). A delivery hose (17) is fixedly connected to the right side of the storage box (15). Suction heads (18) are provided on both sides of the right end of the inner cavity of the outer shell (1). The other end of the delivery hose (17) is fixedly connected to the two suction heads (18). A sealing plug is also provided on the storage box (15).
5. A surgical stone removal device according to claim 1, characterized in that: The inner cavity of the outer shell (1) is provided with sliding grooves (10) on both the upper and lower sides. Sliding blocks (11) are slidably provided in both sliding grooves (10). One end of each sliding block (11) is fixedly connected to the upper and lower sides of the movable frame (801).
6. A surgical stone removal device according to claim 1, characterized in that: The outer casing (1) is provided with a charging port (12).
Citation Information
Patent Citations
Clinical calculus removing device for department of hepatobiliary surgery
CN219397453U