Liver and gall duct calculus taking-out forceps

Abstract

The invention discloses hepatic duct calculus taking-out forceps which comprise a connecting hose and a control assembly, the control assembly comprises a support connected with one end of the connecting hose, a connecting shaft is arranged on the support, a first rotating disc and a second rotating disc are rotationally connected to the connecting shaft, and traction blocks are connected to the outer sides of the first rotating disc and the second rotating disc; control cables are connected to one sides of the two traction blocks, the two control cables are arranged in the connecting hose in a penetrating mode, and a coating assembly is arranged at the free end of the connecting hose; the control assembly can control the calculus removing clamp arranged at the front end of the connecting hose, when the device needs to be used for clamping calculus in the hepatic duct, the device can be stably held firstly, then the end, provided with the coating assembly, of the connecting hose is placed into a channel established in the operation, and the calculus removing clamp can be used for removing the calculus in the hepatic duct. An operator can enable the first rotating disc and the second rotating disc which are connected with the handle and the clamping plate to synchronously rotate by separating the finger ring from the rubber ring, so that the two stone taking clamps are close to each other, and target stones can be clamped through the stone taking clamps.

Description

Technical Field

[0001] This invention relates to the field of stone removal technology, and more specifically, to a forceps for removing hepatobiliary stones. Background Technology

[0002] Intrahepatic bile duct stones are a type of bile duct stone, referring to stones within the branch bile ducts above the confluence of the left and right hepatic ducts. They can exist alone or coexist with extrahepatic bile duct stones. They are generally bilirubin stones. Intrahepatic bile duct stones often coexist with extrahepatic bile duct stones; they can cause bile duct obstruction; induce local infection and secondary bile duct stricture, making it difficult for the stones to pass spontaneously, leading to a prolonged and difficult-to-treat condition. This disease can cause serious complications and is a major cause of death from benign biliary tract diseases.

[0003] However, existing hepatobiliary stone removal forceps typically completely occupy the working channel during stone removal surgery, making it impossible to perform effective irrigation simultaneously. On the one hand, the flocculent material, blood, and tissue fragments generated during the operation cannot be removed in time, and these impurities quickly contaminate the operating area, making the already limited field of vision even more blurred. On the other hand, the lack of continuous irrigation causes the clarity of the surgical area to decrease rapidly, forcing the physician to repeatedly advance and retreat the instrument for irrigation, which not only prolongs the operation time but also increases the risk of bile duct mucosal damage. Summary of the Invention

[0004] This invention provides a hepatobiliary stone removal forceps to solve the problem that in the prior art, the hepatobiliary stone removal forceps completely occupy the working channel during the stone removal process, making it impossible to effectively flush and remove flocculent material and blood during subsequent stone removal operations, resulting in a poorer operating field of vision.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A forceps for removing hepatobiliary stones includes a connecting hose and a control assembly. The control assembly includes a bracket connected to one end of the connecting hose, a connecting shaft on the bracket, a first rotating disk and a second rotating disk rotatably connected to the connecting shaft, traction blocks connected to the outer sides of both the first and second rotating disks, control cables connected to one side of each of the two traction blocks, and both control cables passing through the connecting hose. A covering assembly and an endoscope probe are provided at the free end of the connecting hose.

[0007] Preferably, one end of the connecting hose is connected to a connecting shaft, and two rotating plates are respectively hinged to both ends of the connecting shaft. A stone-removing clamp is connected to either end of the two rotating plates, and the two stone-removing clamps are arranged opposite each other.

[0008] Preferably, the covering assembly includes two fixing blocks that are slidably connected to the free end of the connecting hose, a folding pad is connected to the two fixing blocks, a fixing frame is fixedly connected to the free end of the connecting hose, and one side of the folding pad is connected to the side of the fixing frame.

[0009] Preferably, the fixing frame has a pair of fixing holes, and a pull rope is threaded through each of the two fixing holes. The same end of each of the two pull ropes is connected to an end plate. One end of each of the two pull ropes connected to the end plate is threaded through the two folding pads respectively. The free ends of the two pull ropes are connected to a connecting plate.

[0010] Preferably, the connecting plate is connected to a winding assembly via a control rope. The winding assembly includes a positioning shaft connected to one end of the connecting shaft. A guide groove is provided inside the positioning shaft. A limit card is slidably engaged in the guide groove. A rotating ring is sleeved on the outside of the positioning shaft. A pair of limit grooves are provided on the inside of the rotating ring. The limit card is engaged between the two limit grooves.

[0011] Preferably, a magnetic block is connected to the outer side of the rotating ring, an electromagnetic plate is provided at one end of the connecting shaft, the electromagnetic plate and the magnetic block are arranged on the same horizontal plane, a control rope is connected to one side of the connecting plate, and the free end of the control rope is connected to the outer wall of the rotating ring.

[0012] Preferably, the top of the limiting card is connected to a pull block via a sliding shaft, the sliding shaft is slidably engaged at the top of the positioning shaft, the top of the limiting card is connected to a spring, and the free end of the spring is connected to the inner top wall of the positioning shaft.

[0013] Preferably, a handle is connected to the outside of the first rotating disk, and a rubber ring is connected to the outside of the handle, the rubber ring being arc-shaped.

[0014] Preferably, a retaining plate is connected to the outer side of the second rotating disk, and a finger ring is slidably connected to the retaining plate. Both the finger ring and the rubber ring are made of medical-grade rubber material.

[0015] Preferably, a screw is screwed to the outside of the ring, one end of the screw is coaxially connected to a knob, and both ends of the screw are rotatably connected to the card plate.

[0016] The principle and beneficial effects of this technical solution:

[0017] (1) The control component set in this invention can control the stone retrieval clamp set at the front end of the connecting hose. When it is necessary to use this device to retrieve stones in the hepatobiliary duct, the device can be held stably first, and then the end of the connecting hose with the covering component can be placed into the channel established during the operation. After placing the stone retrieval clamp on both sides of the stone to be retrieved according to the observation results of the endoscope probe at the front end of the connecting hose, the operator can make the first rotating plate and the second rotating plate connected to the handle and the clamp plate rotate synchronously by separating the finger ring and the rubber ring. The control cable connected to the outside of the first rotating plate and the second rotating plate through the traction block pulls the two rotating plates to rotate. At the same time as the two rotating plates rotate, they will drive the two stone retrieval clamps connected to them to move closer to each other. The target stone can be retrieved by the stone retrieval clamp. The relevant flushing equipment connected at the rear end of the connecting hose can be used to flush the blood and flocculent material generated during the retrieval process to avoid affecting the stone retrieval. After closing the covering component, the device and the stone can be retrieved synchronously.

[0018] (2) The covering component set in this invention can prevent the stones from falling out during the removal of stones, and can also prevent the stone removal clip from causing compression damage to the patient's bile ducts during the external movement of the stone removal clip. Before using the control component, the electromagnetic plate set at one end of the connecting shaft is energized, and then the pull block is manually lifted. At this time, the electromagnetic plate will attract the rotating ring with the magnetic block set on the outside, causing the rotating ring to rotate. Since the outside of the rotating ring is connected to the connecting plate through the control rope, the rotating ring will pull the connecting plate while rotating, so that the two pull ropes connected to the connecting plate pull the two end plates connected to its free end. The end plates will squeeze the two folding pads, so that the folding pads connected to the fixed block are compressed to the side of the fixed frame. At this time, the covering component is turned into the open state. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the disassembled structure of the present invention;

[0021] Figure 3 for Figure 2 Enlarged structural diagram of region A in the middle;

[0022] Figure 4 for Figure 2 A magnified structural diagram of region B in the middle;

[0023] Figure 5 This is a schematic diagram of the cross-section of the present invention;

[0024] The reference numerals in the accompanying drawings of the instruction manual include: 1. Connecting hose; 2. Fixing frame; 3. Control rope; 4. Screw; 5. Second rotating disk; 6. Traction block; 7. Knob; 8. Finger ring; 9. Clamping plate; 10. Handle; 11. First rotating disk; 12. Fixing hole; 13. Connecting shaft; 14. Stone retrieval clamp; 15. Rotating plate; 16. Pull rope; 17. Control cable; 18. Folding pad; 19. Fixing block; 20. End plate; 21. Positioning shaft; 22. Guide groove; 23. Limiting groove; 24. Rotating ring; 25. Magnetic block; 26. Bracket; 27. Pulling block; 28. Sliding shaft; 29. ​​Spring; 30. Limiting clip; 31. Electromagnetic plate; 32. Connecting shaft; 33. Connecting plate. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0026] Example:

[0027] like Figures 1 to 5 As shown, the present invention provides a forceps for removing hepatobiliary stones, including a connecting hose 1 and a control assembly. The control assembly includes a bracket 26 connected to one end of the connecting hose 1, a connecting shaft 32 on the bracket 26, a first rotating disk 11 and a second rotating disk 5 rotatably connected to the connecting shaft 32, traction blocks 6 connected to the outer sides of the first rotating disk 11 and the second rotating disk 5, and control cables 17 connected to one side of each of the two traction blocks 6. Both control cables 17 are threaded inside the connecting hose 1, and a covering assembly and an endoscope probe are provided at the free end of the connecting hose 1.

[0028] like Figure 1 and Figure 3 As shown, one end of the connecting hose 1 with the covering component is connected to a connecting shaft 13. Two rotating plates 15 are hinged to both ends of the connecting shaft 13. Stone-removing clamps 14 are connected to either end of the two rotating plates 15. The two stone-removing clamps 14 are arranged opposite each other.

[0029] like Figure 1 and Figure 3 As shown, the covering assembly includes two fixing blocks 19 that are slidably connected to the free end of the connecting hose 1. A folding pad 18 is connected to the two fixing blocks 19. A fixing frame 2 is fixedly connected to the free end of the connecting hose 1. One side of the folding pad 18 is connected to the side of the fixing frame 2.

[0030] like Figure 1 , Figure 3 and Figure 5 As shown, the fixing frame 2 has a pair of fixing holes 12, and pull ropes 16 are threaded through both fixing holes 12. The same end of the two pull ropes 16 is connected to an end plate 20. The ends of the two pull ropes 16 connected to the end plates 20 are respectively threaded through two folding pads 18. The free ends of the two pull ropes 16 are connected to a connecting plate 33.

[0031] like Figure 4 and Figure 5 As shown, the connecting plate 33 is connected to a control component via a control rope 33. The control component includes a connecting shaft 32 with a positioning shaft 21 connected to one end. A guide groove 22 is provided inside the positioning shaft 21. A limit card 30 is slidably engaged in the guide groove 22. A rotating ring 24 is sleeved on the outside of the positioning shaft 21. A pair of limit grooves 23 are provided inside the rotating ring 24. The limit card 30 is engaged between the two limit grooves 23.

[0032] like Figure 1 , Figure 4 and Figure 5 As shown, a magnetic block 25 is connected to the outside of the rotating ring 24, and an electromagnetic plate 31 is provided at one end of the connecting shaft 32. The electromagnetic plate 31 and the magnetic block 25 are set on the same horizontal plane. A control rope 3 is connected to one side of the connecting plate 33, and the free end of the control rope 3 is connected to the outer wall of the rotating ring 24.

[0033] like Figure 4 As shown, the top of the limit card 30 is connected to a pull block 27 via a sliding shaft 28. The sliding shaft 28 is slidably mounted on the top of the positioning shaft 21. The top of the limit card 30 is connected to a spring 29, and the free end of the spring 29 is connected to the inner top wall of the positioning shaft 21.

[0034] The covering component prevents stones from falling out during removal and also avoids compression damage to the patient's bile ducts during the outward movement of the stone retrieval clamp 14. Before using the control component, the electromagnetic plate 31 at one end of the connecting shaft 32 is energized. Then, the pull block 27 is manually lifted. The limit card 30 connected to the sliding shaft 28 by the pull block 27 will move upward synchronously, compressing the spring 29 of the limit card 30. After the limit card 30 disengages from the pair of limit grooves 23 on the inner side of the rotating ring 24, the rotation restriction of the rotating ring 24 will be released. At this time, the electromagnetic plate 31 will attract the rotating ring 24 with the magnetic block 25 on the outside, causing the rotating ring 24 to rotate. Since the outside of the rotating ring 24 is connected to the connecting plate through the control rope 3, the rotating ring 24 will pull the connecting plate while rotating, causing the two pull ropes 16 connected to the connecting plate to pull the two end plates 20 connected to its free end. When the two end plates 20 are pulled to move, the end plates 20 will squeeze the two folding pads 18, causing the folding pads 18 connected to the fixing block 19 to be compressed towards the fixing frame 2. At this time, the covering component will change to the open state.

[0035] When the stone clamping is complete and the covering component needs to be closed, manually reset the rotating ring 24 so that the two limiting grooves 23 on the rotating ring 24 are realigned with the limiting card 30. Then, release the pull block 27. The limiting card 30 connected to the bottom of the pull block 27 through the sliding shaft 28 will move down under the action of the spring 29, so that the limiting card 30 can be re-engaged into the limiting groove 23 to limit the rotating ring 24.

[0036] like Figure 2As shown, a handle 10 is connected to the outside of the first rotating disk 11, and a rubber ring is connected to the outside of the handle 10. The rubber ring is arc-shaped.

[0037] like Figure 2 As shown, a retaining plate 10 is connected to the outside of the second rotating disk 5, and a finger ring 8 is slidably connected to the retaining plate 10. Both the finger ring 8 and the rubber ring are made of medical rubber material.

[0038] like Figure 2 As shown, a screw 4 is screwed onto the outside of the ring 8. A knob 7 is coaxially connected to one end of the screw 4, and both ends of the screw 4 are rotatably connected to the card plate 9.

[0039] The specific usage and function of this embodiment are as follows:

[0040] The control component in this invention can control the stone retrieval clamp 14 at the front end of the connecting hose 1. When this device is needed to retrieve stones in the hepatobiliary duct, the knob 7 can be turned first to rotate the screw 4 coaxially connected to one end of the knob 7. This causes the screw 4 to move the screwed ring 8 along the clamping plate 9 to a suitable position. The operator first inserts the thumb of the operating hand into the ring 8, and then inserts the other four limbs into the rubber rings on the handle 10 to hold the device stably. Then, the end of the connecting hose 1 with the covering component is placed into the channel established during the operation. Based on the endoscopic observation results, the stone retrieval clamp 14 is placed on both sides of the stone to be retrieved. The operator can then separate the ring 8 and the rubber band to make the first rotating disk 11 and the second rotating disk 5 connected to the handle 10 and the clamping plate 9 rotate synchronously. The control cable 17 connected to the outside of the first rotating disk 11 and the second rotating disk 5 via the traction block 6 pulls the two rotating plates 15 to rotate. As the two rotating plates 15 rotate, they will drive the two stone retrieval clamps 14 connected to them to move closer to each other. The target stone can be grasped by the stone retrieval clamps 14. The relevant flushing equipment connected to the rear end of the connecting hose 1 can be used to flush away the blood and flocculent material generated during the grasping process to avoid affecting the stone retrieval. After closing the covering component, the device and the stone can be removed synchronously.

[0041] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A forceps for removing hepatobiliary stones, characterized in that: The device includes a connecting hose (1) and a control assembly. The control assembly includes a bracket (26) connected to one end of the connecting hose (1). A connecting shaft (32) is provided on the bracket (26). A first rotating disk (11) and a second rotating disk (5) are rotatably connected to the connecting shaft (32). A traction block (6) is connected to the outside of both the first rotating disk (11) and the second rotating disk (5). A control cable (17) is connected to one side of each of the two traction blocks (6). Both control cables (17) are threaded inside the connecting hose (1). A covering assembly and an endoscope probe are provided at the free end of the connecting hose (1).

2. The forceps for removing hepatobiliary stones according to claim 1, characterized in that: The connecting hose (1) is provided with a connecting shaft (13) at one end of the covering component. Two rotating plates (15) are respectively hinged at both ends of the connecting shaft (13). The two rotating plates (15) are respectively connected to the free ends of the two control cables (17). A stone-removing clamp (14) is connected to either end of the two rotating plates (15). The two stone-removing clamps (14) are arranged opposite to each other.

3. The forceps for removing hepatobiliary stones according to claim 2, characterized in that: The covering assembly includes two fixing blocks (19) that are slidably connected to the free end of the connecting hose (1), and a folding pad (18) is connected to the two fixing blocks (19). A fixing frame (2) is fixedly connected to the free end of the connecting hose (1), and one side of the folding pad (18) is connected to the side of the fixing frame (2).

4. The forceps for removing hepatobiliary stones according to claim 3, characterized in that: The fixing frame (2) has a pair of fixing holes (12), and pull ropes (16) are threaded through the two fixing holes (12). The same end of the two pull ropes (16) is connected to an end plate (20). One end of the two pull ropes (16) connected to the end plate (20) is threaded through the two folding pads (18) respectively. The free ends of the two pull ropes (16) are connected to a connecting plate (33).

5. The forceps for removing hepatobiliary stones according to claim 4, characterized in that: The connecting plate (33) is connected to a winding assembly via a control rope (33). The winding assembly includes a connecting shaft (32) with a positioning shaft (21) connected to one end. A guide groove (22) is provided in the positioning shaft (21). A limit card (30) is slidably engaged in the guide groove (22). A rotating ring (24) is sleeved on the outside of the positioning shaft (21). A pair of limit grooves (23) are provided on the inside of the rotating ring (24). The limit card (30) is engaged between the two limit grooves (23).

6. The forceps for removing hepatobiliary stones according to claim 5, characterized in that: A magnetic block (25) is connected to the outside of the rotating ring (24). An electromagnetic plate (31) is provided at one end of the connecting shaft (32). The electromagnetic plate (31) and the magnetic block (25) are arranged on the same horizontal plane. A control rope (3) is connected to one side of the connecting plate (33). The free end of the control rope (3) is connected to the outer wall of the rotating ring (24).

7. The forceps for removing hepatobiliary stones according to claim 6, characterized in that: The top of the limiting card (30) is connected to a pull block (27) via a sliding shaft (28). The sliding shaft (28) is slidably mounted on the top of the positioning shaft (21). The top of the limiting card (30) is connected to a spring (29). The free end of the spring (29) is connected to the inner top wall of the positioning shaft (21).

8. The forceps for removing hepatobiliary stones according to claim 7, characterized in that: A handle (10) is connected to the outside of the first rotating disk (11), and a rubber ring is connected to the outside of the handle (10), and the rubber ring is arranged in an arc shape.

9. A forceps for removing hepatobiliary stones according to claim 8, characterized in that: The second rotating disk (5) is connected to a card plate (10) on the outside. A finger ring (8) is slidably connected on the card plate (10). Both the finger ring (8) and the rubber ring are made of medical rubber material.

10. A forceps for removing hepatobiliary stones according to claim 9, characterized in that: The ring (8) is screwed with a screw rod (4) on the outside. One end of the screw rod (4) is coaxially connected to a knob (7). Both ends of the screw rod (4) are rotatably connected to the card plate (9).

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