Pediatric surgical device for removing metal objects from the digestive tract

The pediatric surgical device addresses mucosal damage and operational instability by using an adjustable frame with elastic storage and return force adjustment, ensuring safe and reliable removal of metallic objects from the digestive tract.

JP3256156UActive Publication Date: 2026-06-08TONGJI HOSPITAL ATTACHED TO TONGJI MEDICAL COLLEGE HUAZHONG SCI TECH

Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Utility models
Current Assignee / Owner
TONGJI HOSPITAL ATTACHED TO TONGJI MEDICAL COLLEGE HUAZHONG SCI TECH
Filing Date
2026-04-08
Publication Date
2026-06-08

AI Technical Summary

Technical Problem

Existing pediatric surgical devices for removing metallic foreign objects from the digestive tract face issues such as mucosal damage, instability due to spring fatigue, and reduced reliability from repeated use, posing safety risks and operational challenges.

Method used

A pediatric surgical device with an adjustable frame, elastic storage mechanism, L-shaped clamping claws, and a return force adjustment mechanism, featuring an inner and outer elastic layer, anti-slip grooves, and a strong magnetic ring to ensure stable gripping and safe removal of metallic objects.

Benefits of technology

The device prevents mucosal damage by enclosing the object softly, maintains clamping stability through adjustable return force, and enhances safety and reliability by reducing the risk of object slippage during removal.

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Abstract

To provide a pediatric surgical device for removing metal objects from the digestive tract. [Solution] The pediatric surgical device has an adjustable frame 1, with position-limiting rings 2 fixedly connected to both the left and right side walls of the adjustable frame, a contact plate 3 provided above the adjustable frame, a sliding rod 4 fixedly connected to the lower end of the contact plate, the lower end of the sliding rod passing through the upper side wall of the adjustable frame and fixedly connected to a traction rope 7, an elastic storage mechanism 6 provided at the lower end of the extension outer tube 5, and a clamping mechanism provided at the lower end of the traction rope. By installing the elastic storage mechanism, the entire foreign object is softly encased after being clamped, preventing the corners of the foreign object or the edges of the instrument from injuring the gastrointestinal mucosa, thereby significantly improving the safety of pediatric surgical procedures.
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Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a pediatric surgical device for removing metallic objects from the digestive tract.

Background Art

[0002] Pediatric surgery, as an important academic field of surgical diagnosis and treatment targeting infants and children, may often face cases in daily medical practice where children accidentally swallow metallic foreign objects into the digestive tract. Such accidents have a high incidence rate clinically and have already become one of the frequently seen emergency conditions in pediatrics.

[0003] During the process of removing metallic foreign objects from the digestive tract, if ordinary instruments are used to directly and forcibly remove the metallic foreign objects, the edges of the instruments or the corners of the foreign objects are likely to damage the delicate digestive tract mucosa of children, posing safety risks such as bleeding and perforation, and it is difficult to ensure the safety of the operation and the comfort of the affected children. Some of the existing devices for removing foreign objects from the digestive tract are also reusable medical instruments. Most of such instruments rely on a reset spring to achieve the automatic reset function of the clamping mechanism. However, during the process of repeated use over a long period, problems such as elastic fatigue and rebound force attenuation occur in the reset spring, causing instability of the reset force and delay in the response of the clamping operation, which not only affects the stability and reliability when clamping metallic foreign objects, but also shortens the service life of the device, so it cannot continuously meet the precise and safe operation requirements of pediatric surgery.

[0004] Therefore, in order to solve the above problems, the present invention proposes a pediatric surgical device for removing metallic objects from the digestive tract.

Summary of the Invention

Problems to be Solved by the Invention

[0005] The purpose of the present invention is to provide a pediatric surgical device for removing metallic objects from the digestive tract in order to solve the problems raised in the above background art.

Means for Solving the Problems

[0006] To achieve the above objective, this invention provides the following technical means.

[0007] A pediatric surgical device for removing metal objects from the digestive tract has an adjustable frame, position-limiting rings are fixedly connected to both the left and right side walls of the adjustable frame, a contact plate is provided above the adjustable frame, a sliding rod is fixedly connected to the lower end of the contact plate, the lower end of the sliding rod penetrates the upper wall of the adjustable frame and a traction rope is fixedly connected to it, a position-limiting plate is fixedly connected to the outer wall of the sliding rod, the position-limiting plate penetrates the upper wall of the adjustable frame and is slidably connected to the upper wall, an extension outer tube is fixedly connected to the lower end of the adjustable frame, an elastic storage mechanism is provided at the lower end of the extension outer tube, the lower end of the traction rope penetrates the lower wall of the adjustable frame and extends into the extension outer tube, a clamping mechanism is provided at the lower end of the traction rope, the clamping mechanism is located within the elastic storage mechanism, and a return force adjustment mechanism is provided inside the adjustable frame.

[0008] Preferably, the elastic storage mechanism has an inner elastic layer, an outer elastic layer, and a plurality of spring-loaded rods, the lower ends of the spring-loaded rods are fixedly connected to a position-restricting bottom plate, the upper ends of the inner elastic layer, the outer elastic layer, and the plurality of spring-loaded rods are all fixedly connected to the lower end of the extension outer tube, the inner elastic layer and the outer elastic layer are located inside and outside the plurality of spring-loaded rods, and the lower ends of the inner elastic layer and the outer elastic layer are fixedly connected to the inside and outside of the position-restricting bottom plate, respectively.

[0009] Preferably, the clamping mechanism has a plurality of clamping claws, the clamping claws are made of an elastic structural material, and the clamping claws are L-shaped.

[0010] Preferably, a rubber pad to prevent detachment is provided on the inner wall of the clamping claw, and a plurality of anti-slip grooves are provided on one side of the rubber pad that is separated from the clamping claw.

[0011] Preferably, a monitoring and control device is provided at the lower end of the towing rope, a data connection line is connected to the upper end of the monitoring and control device, the upper end of the data connection line is connected to an external display device by sequentially passing through the towing rope and the sliding rod, a strong magnetic ring is provided at the lower end of the towing rope, and the strong magnetic ring is located outside the monitoring and control device.

[0012] Preferably, the return force adjustment mechanism has a male screw tube fixed on the sliding rod, a female screw adjustment knob screwed onto the male screw tube, the outer end of the female screw adjustment knob extending to the outside of the adjustment frame, a contact ring rotatably connected above the female screw adjustment knob, the male screw tube fitted onto the contact ring, the male screw tube fitted onto a return spring, and the upper and lower ends of the return spring fixedly connected to the upper inner wall of the adjustment frame and the upper end of the contact ring, respectively. [Effects of the Invention]

[0013] The pediatric surgical device for removing metal objects from the digestive tract according to this invention has the following beneficial effects compared to existing technology. 1. In the pediatric surgical device for removing metal objects from the digestive tract according to the present invention, by installing an elastic storage mechanism, storage and protection can be added to the clamping mechanism in a non-working state. Furthermore, after the metal foreign object is clamped, the entire foreign object is softly encased, thereby preventing the corners of the foreign object or the edges of the instrument from injuring the digestive tract mucosa, and significantly improving the safety of pediatric surgical procedures.

[0014] 2. In the pediatric surgical device for removing metal objects from the digestive tract according to the present invention, by combining elastic L-shaped gripping claws with an internal anti-slip rubber pad and anti-slip groove, the metal foreign object can be stably gripped, and in conjunction with the auxiliary attraction of a strong magnetic ring, the risk of the foreign object falling during the removal process is further reduced.

[0015] 3. In the pediatric surgical device for removing metal objects from the digestive tract according to the present invention, the initial tension of the return spring can be adjusted by the return force adjustment mechanism, solving the problem of spring repulsion force decay due to long-term use, ensuring stability and responsiveness of the clamping operation, and improving the reliability of repeated use of the device. [Brief explanation of the drawing]

[0016] [Figure 1] Figure 1 is a schematic diagram showing the three-dimensional structure of the present invention. [Figure 2] Figure 2 is an exploded view showing a partial structure of the elastic storage mechanism of the present invention. [Figure 3] Figure 3 is a schematic diagram showing the three-dimensional structure of the clamping mechanism located beneath the towing rope of the present invention. [Figure 4] Figure 4 is a localized enlarged view of section A in Figure 3. [Figure 5] Figure 5 is a schematic diagram showing the deployed state of the clamping mechanism of the present invention. [Figure 6] Figure 6 is a schematic diagram showing the local structure of the adjustment frame of the present invention. [Figure 7] Figure 7 is a localized enlarged view of section B in Figure 6. Forms for implementing a utility model

[0017] We will now clearly and completely describe the technical means in the embodiments of the present invention with reference to the drawings of the embodiments of the present invention. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all embodiments. All other embodiments that a person skilled in the art could obtain without expending creative labor based on the embodiments of the present invention are included within the scope of protection of the present invention.

[0018] As shown in Figure 1-7, the technical means of the present invention is a pediatric surgical device for removing metal objects from the digestive tract, which has an adjustable frame 1, position limiting rings 2 fixedly connected to both the left and right side walls of the adjustable frame 1, a contact plate 3 is provided above the adjustable frame 1, a sliding rod 4 is fixedly connected to the lower end of the contact plate 3, the lower end of the sliding rod 4 penetrates the upper side wall of the adjustable frame 1 and is fixedly connected to a traction rope 7, a position limiting plate 8 is fixedly connected to the outer wall of the sliding rod 4, the position limiting plate 8 penetrates the upper side wall of the adjustable frame 1 and is slidably connected to the upper side wall, an extension outer tube 5 is fixedly connected to the lower end of the adjustable frame 1, an elastic storage mechanism 6 is provided at the lower end of the extension outer tube 5, the lower end of the traction rope 7 penetrates the lower side wall of the adjustable frame 1 and extends into the extension outer tube 5, a clamping mechanism is provided at the lower end of the traction rope 7, the clamping mechanism is located inside the elastic storage mechanism 6, and a return force adjustment mechanism is provided inside the adjustable frame 1.

[0019] The elastic storage mechanism 6 has an inner elastic layer 15, an outer elastic layer 16, and a plurality of spring-loaded rods 13. A position-restricting bottom plate 14 is fixedly connected to the lower end of each spring-loaded rod 13. The upper ends of the inner elastic layer 15, the outer elastic layer 16, and the plurality of spring-loaded rods 13 are all fixedly connected to the lower end of the extension outer tube 5. The inner elastic layer 15 and the outer elastic layer 16 are located inside and outside the plurality of spring-loaded rods 13, and the lower ends of the inner elastic layer 15 and the outer elastic layer 16 are fixedly connected to the inside and outside of the position-restricting bottom plate 14, respectively. After grasping the foreign object, the palm is released to remove the action on the contact plate 3, and the sliding rod 4 and the traction rope 7 move upward under the action of the return spring 10. As the foreign object moves to the position of the elastic storage mechanism 6 and continues to move in the direction under the action of the return spring 10, it pushes open several position-restricting bottom plates 14 and enters the inner elastic layer 15, at which point the spring-loaded rods 13 can change in accordance with the volume of the foreign object. After the foreign object is completely inside the elastic storage mechanism 6, it becomes possible to withdraw the extended outer tube 5 from the digestive tract. Under the action of the elastic storage mechanism 6, the foreign object is enclosed, thereby preventing the corners of the foreign object or the edges of the instrument from damaging the digestive tract mucosa.

[0020] The clamping mechanism has multiple clamping claws 19, which are made of an elastic structural material. The clamping mechanism can be automatically deployed after the clamping claws 19 are removed from the elastic storage mechanism 6. The clamping claws are L-shaped, which is convenient for gripping foreign objects.

[0021] An anti-drop rubber pad 20 is provided on the inner wall of the clamping claw 19, and a plurality of anti-slip grooves 21 are provided on one side of the anti-drop rubber pad 20 away from the clamping claw 19. By providing the anti-slip grooves 21 and the anti-drop rubber pad 20, the stability of the clamping claw 19 for grasping foreign objects is improved.

[0022] A monitoring and control device 17 is provided at the lower end of the traction rope 7, a data connection line is connected to the upper end of the monitoring and control device 17, the upper end of the data connection line is connected to an external display device through the traction rope 7 and the sliding rod 4 in sequence, and a strong magnetic ring 18 is provided at the lower end of the traction rope 7. The strong magnetic ring 18 is located outside the monitoring and control device 17. When grasping a foreign object, the monitoring and control device 17 is used to observe the foreign object, and the strong magnetic ring 18 is used to assist in fixing the magnetic metal foreign object to prevent the foreign object from slipping.

[0023] The reset force adjusting mechanism has a male solenoid tube 9 fixed on the sliding rod 4. A female screw adjusting knob 11 is screwed on the male solenoid tube 9. The outer end of the female screw adjusting knob 11 extends to the outside of the adjusting frame body 1. A contact ring 12 is rotatably connected above the female screw adjusting knob 11. The male solenoid tube 9 is fitted into the contact ring 12. The male solenoid tube 9 is fitted into the reset spring 10. The upper and lower ends of the reset spring 10 are fixedly connected to the upper inner wall of the adjusting frame body 1 and the upper end of the contact ring 12 respectively. When the female screw adjusting knob 11 is rotated after the elasticity of the reset spring 10 decreases after long-term use, as the distance between the female screw adjusting knob 11 and the upper inner wall of the adjusting frame body 1 widens, the reset spring 10 is stretched, thereby ensuring the reset force of the reset spring 10 on the traction rope 7 and the sliding rod 4.

[0024] The operating principle of the present invention is as follows.

[0025] During use, one end of the elastic storage mechanism 6 of this device is inserted into the digestive tract. Simultaneously, the medical professional places their index and middle fingers inside the two position-limiting rings 2, with their palm in contact with the contact plate 3. The monitoring and control device 17 is used to observe the position of the foreign object in the digestive tract through the gap between the gripping claws 19. After moving to the position of the foreign object, the palm presses against the contact plate 3, causing the sliding rod 4 and traction rope 7 to move downward, extending some of the gripping claws 19 from the lower end of the elastic storage mechanism 6. After extending them to the outside of the elastic storage mechanism 6, some of the gripping claws 19 are spread apart, and the foreign object is gripped using the gripping claws 19. Then, the strong magnetic ring 18 provides good auxiliary fixing for magnetic metal foreign objects. After the foreign object has been grasped, the palm is released to remove the action on the contact plate 3, and the sliding rod 4 and traction rope 7 move upward under the action of the return spring 10. As the foreign object moves to the position of the elastic storage mechanism 6 and continues to move in the direction under the action of the return spring 10, it pushes open several position-limiting base plates 14 and, as it enters the inner elastic layer 15, the spring-loaded rod 13 can change according to the volume of the foreign object. After the foreign object is completely inside the elastic storage mechanism 6, it becomes possible to withdraw the extension outer tube 5 from the digestive tract, and the foreign object is enclosed under the action of the elastic storage mechanism 6, thereby preventing the corners of the foreign object or the edges of the instrument from injuring the digestive tract mucosa, and significantly improving the safety of pediatric surgical procedures.

[0026] Although embodiments of the present invention have already been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of protection of the present invention is defined by the claims and their equivalents. [Explanation of symbols]

[0027] 1-Adjustable frame; 2-Position limiting ring; 3-Contact plate; 4-Sliding rod; 5-Extension outer tube; 6-Elastic storage mechanism; 7-Tow rope; 8-Position limiting plate; 9-Male threaded tube; 10-Return spring; 11-Female threaded adjustment knob; 12-Contact ring; 13-Spring rod; 14-Position limiting bottom plate; 15-Inner elastic layer; 16-Outer elastic layer; 17-Monitoring and control device; 18-Strong magnetic ring; 19-Clamping claw; 20-Anti-slip rubber pad; 21-Anti-slip groove.

Claims

1. A pediatric surgical device for removing metal objects from the digestive tract, comprising an adjustable frame (1), wherein position-limiting rings (2) are fixedly connected to both the left and right side walls of the adjustable frame (1), a contact plate (3) is provided above the adjustable frame (1), a sliding rod (4) is fixedly connected to the lower end of the contact plate (3), the lower end of the sliding rod (4) penetrates the upper wall of the adjustable frame (1) and a traction rope (7) is fixedly connected to it, and a position-limiting plate (8) is fixedly connected to the outer wall of the sliding rod (4), and the position-limiting rings (2) are fixedly connected to the upper wall of the sliding rod (4). A limit plate (8) penetrates the upper wall of the adjustment frame (1) and is slidably connected to the upper wall, an extension outer tube (5) is fixedly connected to the lower end of the adjustment frame (1), an elastic storage mechanism (6) is provided at the lower end of the extension outer tube (5), the lower end of the towing rope (7) penetrates the lower wall of the adjustment frame (1) and extends into the extension outer tube (5), a clamping mechanism is provided at the lower end of the towing rope (7), the clamping mechanism is located within the elastic storage mechanism (6), and a return force adjustment mechanism is provided within the adjustment frame (1). A pediatric surgical device for removing metal objects from the digestive tract, characterized by the following features.

2. The elastic storage mechanism (6) comprises an inner elastic layer (15), an outer elastic layer (16), and a plurality of spring-loaded rods (13), with a position-limiting bottom plate (14) fixedly connected to the lower ends of the spring-loaded rods (13), the upper ends of the inner elastic layer (15), the outer elastic layer (16), and the plurality of spring-loaded rods (13) all fixedly connected to the lower end of the extension outer tube (5), the inner elastic layer (15) and the outer elastic layer (16) located inside and outside the plurality of spring-loaded rods (13), and the lower ends of the inner elastic layer (15) and the outer elastic layer (16) fixedly connected to the inside and outside of the position-limiting bottom plate (14), respectively. A pediatric surgical device for removing metal objects from the digestive tract, as described in feature 1.

3. The clamping mechanism has a plurality of clamping claws (19), the clamping claws (19) are made of an elastic structural material, and the clamping claws (19) are L-shaped. A pediatric surgical device for removing metal objects from the digestive tract, as described in feature 1.

4. A rubber pad (20) to prevent detachment is provided on the inner wall of the clamping claw (19), and a plurality of anti-slip grooves (21) are provided on one side of the rubber pad (20) that is separated from the clamping claw (19). A pediatric surgical device for removing metal objects from the digestive tract, as described in feature 3.

5. A monitoring and control device (17) is provided at the lower end of the towing rope (7), a data connection line is connected to the upper end of the monitoring and control device (17), the upper end of the data connection line is connected to an external display device by sequentially passing through the towing rope (7) and the sliding rod (4), a strong magnetic ring (18) is provided at the lower end of the towing rope (7), and the strong magnetic ring (18) is located outside the monitoring and control device (17). A pediatric surgical device for removing metal objects from the digestive tract, as described in feature 1.

6. The return force adjustment mechanism has a male threaded tube (9) fixed on the sliding rod (4), a female threaded adjustment knob (11) is screwed onto the male threaded tube (9), the outer end of the female threaded adjustment knob (11) extends to the outside of the adjustment frame (1), a contact ring (12) is rotatably connected above the female threaded adjustment knob (11), the male threaded tube (9) is fitted onto the contact ring (12), the male threaded tube (9) is fitted onto the return spring (10), and the upper and lower ends of the return spring (10) are fixedly connected to the upper inner wall of the adjustment frame (1) and the upper end of the contact ring (12), respectively. A pediatric surgical device for removing metal objects from the digestive tract, as described in feature 1.