Single-hole laparoscopic gallbladder stone total closed treatment device

Abstract

The application discloses a single-hole laparoscopic gallbladder stone full-closed treatment device and particularly relates to the technical field of medical devices, which comprises a trigger handle, a holding handle is rotationally connected to the right side of the trigger handle, an adjusting mechanism is fixedly connected to the middle part of the inner cavity of the holding handle, a full-closed sealing sleeve is fixedly connected to the right side of the holding handle, and a stone-removing instrument conveying pipe is slidably connected to the middle part of the full-closed sealing sleeve. The single-hole laparoscopic gallbladder stone full-closed treatment device can realize manual power output through the rotation of the trigger handle and the holding handle, the guide blocks and the guide blocks symmetrically arranged in the holding handle can guide and limit the traction mechanism, so that the transmission is prevented from being blocked and deviated, the adjusting mechanism cooperates with the friction transmission structure to stably push or retract the stone-removing instrument conveying pipe, the sealing sleeve can also isolate pollutants, reduces the risk of intraoperative infection, and improves the stability and safety of minimally invasive stone-removing operation.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a single-port laparoscopic bile duct stone fully enclosed treatment device. Background Technology

[0002] The field of medical device technology encompasses various specialized operating equipment and auxiliary instruments used in clinical diagnosis and treatment, minimally invasive surgery, and the treatment of lesions in the human body. In particular, it covers endoscopic operating instruments in the field of laparoscopic minimally invasive surgery. This field mainly targets minimally invasive treatment scenarios for lesions in internal organs. Relying on basic structural technologies such as mechanical transmission, closed protection, and precise intracavitary delivery, it enables non-invasive or minimally invasive treatment of lesions inside human cavities. It is widely used in the removal of stones and the cleaning of lesions in abdominal organs such as the liver, gallbladder, and gastrointestinal tract, and is an important technical branch of the modern minimally invasive surgical diagnosis and treatment system.

[0003] Chinese Patent Publication No. CN210931730U discloses a novel single-port laparoscopic surgical puncture device, belonging to the field of medical devices. A puncture head is fixedly connected to the lower end of a cannula. The puncture head includes a connecting part, and a blade is fixedly connected to the lower end of the connecting part. The blade has a blade tip at its lower end, and a left wing blade is fixedly connected to its surface. The left wing blade is obliquely fixed to the left side of the blade, and a right wing blade is fixedly connected to its surface. The right wing blade is obliquely fixed to the right side of the blade, with the oblique direction opposite to that of the left wing blade. A lower sealing cap is fixedly connected to the upper end of the cannula. The left and right wing blades and the blade are spirally arranged, allowing the puncture head to easily pierce the patient's muscle fascia, increasing the cutting effect of the puncture head and thus improving the ease of use of the puncture device. Furthermore, the sealing cap has the function of quick installation and easy disassembly, thereby improving the assembly efficiency of the puncture device.

[0004] Existing single-port laparoscopic surgical puncture equipment relies solely on a spiral blade structure to complete the puncture and cutting operation. The overall structure focuses on puncture insertion and equipment assembly, lacking a stable transmission and control structure for stone retrieval instruments. This makes it difficult to flexibly switch between reciprocating instrument transport states and maintain continuous and stable stone retrieval operations. The equipment is only equipped with a basic sealing structure and lacks the relevant functions for instrument cleaning and drying. It cannot treat the surface stains and residual liquids of instruments that enter the human body cavity, which easily increases the probability of intraoperative contamination and human tissue irritation. Summary of the Invention

[0005] The main objective of this invention is to provide a single-port laparoscopic bile duct stone fully enclosed treatment device, which can effectively solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A single-port laparoscopic bile duct stone fully enclosed treatment device includes a trigger handle, a grip handle is rotatably connected to the right side of the trigger handle, an adjustment mechanism is fixedly connected to the middle of the inner cavity of the grip handle, a fully enclosed sealing sleeve is fixedly connected to the right side of the grip handle, and a stone retrieval instrument delivery tube is slidably connected to the middle of the fully enclosed sealing sleeve. The grip includes a handle housing, a fixing block is fixedly connected to the left side of the handle housing, two symmetrically arranged guide protrusions are fixedly connected to the inner cavity of the fixing block, a guide block one for guidance is fixedly connected to the upper left side of the guide protrusion, two traction mechanisms are slidably connected to the upper end of the guide block one, and a transmission mechanism is rotatably connected to the upper part of the inner cavity of the fixing block.

[0007] Preferably, the traction mechanism includes a traction line, one end of which is fixedly connected to the upper part of the trigger handle, and the other end of which is fixedly connected to a transmission rack. A spring is fixedly connected to the bottom end of the transmission rack, and both sides of the transmission rack are slidably connected to guide protrusions.

[0008] Preferably, the transmission mechanism includes a second guide block, which is fixedly connected to the inner cavity of the handle housing. The right side of the second guide block has a rubber wheel that is rotatably connected to the middle of the inner cavity of the handle housing, and a rubber transmission wheel is fixedly connected to the bottom of the rubber wheel.

[0009] Preferably, the outer surface of the transmission mechanism is provided with a plurality of grooves, which are used to increase the friction force for the movement of the stone retrieval instrument delivery tube.

[0010] Preferably, the fully enclosed sealing sleeve includes a sleeve body, which is fixedly connected to the right side of the handle housing. A sealing head is fixedly connected to the right end of the sleeve body. A heating coil is provided in the inner cavity of the sleeve body. The heating coil is used to heat and dry the alcohol on the surface of the stone retrieval instrument delivery tube. A through hole is opened in the middle of the inner cavity of the sleeve body. The stone retrieval instrument delivery tube slides through the through hole and can slide back and forth along the through hole and extend into the human body cavity.

[0011] Preferably, the adjustment mechanism includes a sliding plate, which is slidably connected to the middle of the handle housing. The sliding plate has two sets of coaxial through-holes, and a transmission rod is rotatably inserted into each set of through-holes. The two transmission rods are arranged in parallel and spaced apart. The transmission rods are rotatably fitted with the through-holes with clearance. The front ends of the two transmission rods are provided with driving bevel gears. The ends of the two driving bevel gears that are far apart from each other are fitted with driven bevel gears. The sides of the two driven bevel gears that are far apart from each other are fixedly connected with spur gears. The middle of the two spur gears and the two driven bevel gears are rotatably connected to a connecting rod. The outer surfaces of the two connecting rods are rotatably connected to fixed plates. The left sides of the two fixed plates are fixedly connected to the sliding plate. The outer surfaces of the two transmission rods are wound with a transmission belt. The left ends of the two transmission rods are fixedly connected to a one-way transmission gear.

[0012] Preferably, the outer surfaces of both spur gears are engaged with the rubber transmission wheel, and the two unidirectional transmission gears are engaged with the transmission rack in the adjacent direction.

[0013] Preferably, when the operator pushes the sliding plate backward, the driving bevel gear at the rear will mesh with the driven bevel gear at the rear. The operator can then lift the traction line by pressing the trigger handle. During this lifting, the transmission rack will move upward, causing the rear one-way transmission gear to rotate. This, in turn, drives the spur gear fixedly connected to the rear of the driven bevel gear to engage with the rubber transmission wheel, thereby conveying the stone-retrieving instrument's delivery tube. Since both one-way transmission gears are unidirectional, the two springs fixedly connected to the bottom of the transmission rack will not rotate the transmission rod when they reset due to their own elasticity. Conversely, when the operator wants to retract the stone-retrieving instrument's delivery tube, they only need to press the sliding plate in the opposite direction.

[0014] Compared with the prior art, the present invention has the following beneficial effects: This invention achieves manual power output through the rotation of the trigger handle and the grip handle. A pair of symmetrical guide protrusions and guide blocks inside the grip handle provide guidance and limitation, effectively preventing transmission jamming and ensuring stable power transmission. By adjusting the transmission mode and combining it with the friction transmission structure of the transmission mechanism, the smooth pushing and retracting of the stone retrieval instrument delivery tube is achieved. Furthermore, the fully enclosed sealing sleeve effectively isolates external contaminants and avoids intraoperative infection. The entire minimally invasive stone retrieval operation is completed through a mechanical linkage structure, and the stable and reliable transmission structure effectively improves the stability and safety of the surgical procedure.

[0015] This invention achieves stable guiding sliding and automatic reset of the transmission rack through the cooperation of the traction mechanism and the guide protrusion, effectively improving the stability of power transmission. By adjusting the cooperation of the sliding plate, bevel gear set and transmission belt inside the mechanism, the device can flexibly switch between wire feeding and retraction conditions, meeting the bidirectional movement requirements of instruments. The meshing cooperation of spur gears and rubber transmission wheels, combined with the groove structure on the surface of the transmission mechanism, greatly increases the transmission friction, effectively preventing instrument slippage. Relying on the unidirectional transmission characteristics of the unidirectional transmission gear, the instrument can be prevented from accidentally retracting, significantly improving the stability and controllability of surgical operations.

[0016] This invention achieves minimally invasive closed stone retrieval through the cooperation of a fully enclosed sealing sleeve and a stone retrieval instrument delivery tube. The sealing head at the right end of the sleeve body seals and protects the surgical wound, effectively preventing external contaminants from entering the body cavity and reducing the probability of intraoperative infection. The heating coil inside the sleeve body heats and dries the residual alcohol on the surface of the stone retrieval instrument delivery tube, effectively removing residual liquid and avoiding irritation to the bile duct, thus improving the cleanliness of the surgery. At the same time, the through hole inside the sleeve body can limit and guide the stone retrieval instrument delivery tube, ensuring the smooth axial sliding of the instrument and effectively improving the safety and stability of the overall surgical operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective; Figure 3 This is a cross-sectional view of the overall structure of the grip handle of the present invention; Figure 4 This is a schematic diagram of the overall structure of the traction mechanism of the present invention; Figure 5 This is a schematic diagram of the overall structure of the fully enclosed sealing sleeve of the present invention; Figure 6 This is a schematic diagram of the overall structure of the adjustment mechanism of the present invention; Figure 7 This is a schematic diagram showing the cooperation between the adjustment mechanism and the traction mechanism of the present invention.

[0018] In the diagram: 1. Trigger handle; 2. Grip handle; 21. Handle housing; 22. Fixing block; 23. Guide protrusion; 24. Guide block one; 25. Traction mechanism; 251. Traction line; 252. Transmission rack; 253. Spring; 26. Transmission mechanism; 261. Guide block two; 262. Rubber wheel; 263. Rubber transmission wheel; 3. Fully enclosed sealing sleeve; 31. Sleeve body; 32. Sealing head; 33. Heating coil; 34. Through hole; 4. Stone retrieval instrument delivery pipe; 5. Adjustment mechanism; 51. Sliding plate; 52. Fixing plate; 53. Spur gear; 54. Driven bevel gear; 55. Connecting rod; 56. Transmission rod; 57. Transmission belt; 58. One-way transmission gear. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0020] Example 1, please refer to Figure 1 , Figure 2 , Figure 3 as well as Figure 4 As shown, a single-port laparoscopic bile duct stone fully enclosed treatment device includes a trigger handle 1, a grip handle 2 rotatably connected to the right side of the trigger handle 1, the rotatable connection structure allows the trigger handle 1 to rotate relative to the grip handle 2, an adjustment mechanism 5 is fixedly connected to the middle of the inner cavity of the grip handle 2, the adjustment mechanism 5 is the core control structure of the device, which can realize the switching of instrument delivery and retraction working conditions, a fully enclosed sealing sleeve 3 is fixedly connected to the right side of the grip handle 2, the fully enclosed sealing sleeve 3 can create a closed surgical operating environment, isolate external contaminants and ensure a sterile surgical environment, a stone retrieval instrument delivery tube 4 is slidably connected to the middle of the fully enclosed sealing sleeve 3, the stone retrieval instrument delivery tube 4 can make stable axial sliding movement inside the sleeve, thereby completing the operation of inserting into the human cavity to retrieve stones and retracting and repositioning them after surgery; The handle 2 includes a handle housing 21. A fixing block 22 is fixedly connected to the left side of the handle housing 21. The fixing block 22 serves as the base for the guide and traction structure, ensuring the stability of the installation position of the upper transmission component. Two symmetrically arranged guide protrusions 23 are fixedly connected to the inner cavity of the fixing block 22. The symmetrically arranged guide protrusions 23 can form a bidirectional guide and limiting structure, effectively balancing the force during transmission. A guide block 24 for guidance is fixedly connected to the upper left side of the guide protrusion 23. The guide block 24 can further regulate the movement trajectory of the sliding component and avoid deviation and jamming. Two traction mechanisms 25 are slidably connected to the upper end of the guide block 24. The traction mechanism 25 can complete the traction power output by following the pressing action of the trigger handle 1. A transmission mechanism 26 is rotatably connected to the upper part of the inner cavity of the fixing block 22. The transmission mechanism 26 can drive the stone retrieval instrument delivery tube 4 to complete axial movement by relying on its own rotational friction, realizing the precise insertion and retraction of the instrument.

[0021] Manual power output is achieved through the rotation of the trigger handle 1 and the grip handle 2. The traction mechanism 25 is guided and limited by the symmetrical guide protrusions 23 and guide blocks 24 inside the grip handle 2, which effectively avoids transmission jamming and deviation and ensures stable power transmission. The transmission mode is switched by the adjustment mechanism 5 and the friction transmission structure of the transmission mechanism 26 to achieve smooth pushing and retracting of the stone retrieval instrument delivery tube 4. In addition, the closed protective structure of the fully enclosed sealing sleeve 3 effectively isolates external contaminants and avoids intraoperative infection problems. The whole operation is completed by mechanical linkage structure. The stable and reliable transmission structure also effectively improves the stability and safety of the operation.

[0022] Example 2, based on Example 1, further achieves the purpose of transmitting power to 3. For details, please refer to [link / reference]. Figure 5 , Figure 6 as well as Figure 7 As shown, the traction mechanism 25 includes a traction line 251. One end of the traction line 251 is fixedly connected to the upper part of the trigger handle 1. This fixing method ensures that the rotation of the trigger handle 1 can be directly converted into the lifting power of the traction line 251, with no lag or loss in power transmission. The other end of the traction line 251 is fixedly connected to a transmission rack 252. When the traction line 251 is lifted, it can directly drive the transmission rack 252 to make vertical linear motion. A spring 253 is fixedly connected to the bottom end of the transmission rack 252. After the external traction force disappears, the spring 253 can drive the transmission rack 252 to automatically reset by its own elastic deformation, realizing the cyclic operation of the structure. The left and right sides of the transmission rack 252 are slidably connected to the guide protrusions 23. The guide protrusions 23 can limit and guide the vertical sliding of the transmission rack 252 throughout the entire process, limiting the left and right swaying amplitude of the transmission rack 252, ensuring the stability of the rack meshing transmission, and avoiding the problem of transmission failure.

[0023] Furthermore, the transmission mechanism 26 includes a second guide block 261, which is fixedly connected to the inner cavity of the handle housing 21. The second guide block 261 can assist in guiding the sliding path of the stone retrieval instrument delivery tube 4, further improving the stability of the instrument during movement. On the right side of the second guide block 261, there is a rubber wheel 262 that is rotatably connected to the middle of the inner cavity of the handle housing 21. The rubber wheel 262 has good deformation fitting ability and can closely fit the outer wall of the stone retrieval instrument delivery tube 4, adapting to instrument tubes with different slight size deviations. A rubber transmission wheel 263 is fixedly connected to the bottom of the rubber wheel 262. The rubber transmission wheel 263 and the rubber wheel 262 rotate synchronously as a whole, and can receive the power transmitted by the gear structure, providing a stable rotational driving force source for instrument delivery.

[0024] Furthermore, the outer surface of the transmission mechanism 26 is provided with several grooves. These grooves can effectively increase the contact roughness between the transmission mechanism 26 and the outer wall of the stone retrieval instrument delivery tube 4, greatly improve the friction between the two, prevent slippage and free rotation during transmission, and ensure that the rotation of the transmission mechanism 26 can be completely converted into the linear movement power of the stone retrieval instrument delivery tube 4, thus ensuring the effectiveness and synchronicity of the instrument delivery action.

[0025] Furthermore, the adjustment mechanism 5 includes a sliding plate 51, which is slidably connected to the middle of the handle housing 21. The operator can change the meshing state of the internal gears by pushing and pulling the sliding plate 51 to switch between the conveying and retraction modes of the equipment. The sliding plate 51 has two sets of coaxial through-holes, and a transmission rod 56 is rotatably inserted into each set of through-holes. The two sets of coaxial arrangement can ensure the symmetry of the transmission structure. The two transmission rods 56 are arranged in parallel and spaced apart, and the transmission rods 56 are rotatably fitted with the through-holes with a clearance. The clearance fit can reduce the frictional resistance during the rotation of the transmission rods 56 and ensure smooth rotation. The front ends of the two transmission rods 56 are provided with driving bevel gears, and the ends of the two driving bevel gears that are far apart from each other are fitted with driven bevel gears 54. The direction of power transmission can be changed by switching the meshing state of different bevel gears. The ends of the two driven bevel gears that are far apart from each other are fixedly connected with spur gears. 53. The spur gear 53 can rotate synchronously with the driven bevel gear 54 and output power. The two spur gears 53 and the two driven bevel gears 54 are connected to a connecting rod 55 at their middle. The connecting rod 55 can provide axial support for the rotation of the gear set, limit the radial offset during the rotation of the gears, and improve the transmission stability. The outer surfaces of the two connecting rods 55 are rotatably connected to a fixing plate 52. The left side of the two fixing plates 52 is fixedly connected to the sliding plate 51. The fixing plate 52 can limit and fix the gear set structure to ensure the stability of the overall structural layout. The outer surfaces of the two transmission rods 56 are connected to a transmission belt 57. The transmission belt 57 can realize the synchronous linkage rotation of the two transmission rods 56, which can adapt to the switching requirements of the equipment for wire feeding and wire take-up. The left ends of the two transmission rods 56 are fixedly connected to a one-way transmission gear 58. The one-way transmission gear 58 has a one-way locking characteristic, which can prevent mis-transmission when the structure is reset.

[0026] Furthermore, the outer surfaces of both spur gears 53 are engaged with the rubber transmission wheel 263. When the spur gears 53 rotate, they can drive the rubber transmission wheel 263 to rotate synchronously, providing stable power for the transport of the instrument. Both unidirectional transmission gears 58 are engaged with the transmission rack 252 in the adjacent direction. The vertical movement of the transmission rack 252 can drive the unidirectional transmission gears 58 to rotate, thereby realizing the power conversion from trigger action to transmission structure. The adjacent cooperating structural layout can accurately correspond to forward and reverse transport conditions, ensuring the precise correspondence of power transmission.

[0027] Furthermore, when the operator pushes the sliding plate 51 backward, the rear driving bevel gear will mesh with the rear driven bevel gear 54, completing the switch to the forward conveying mode of the equipment. At this time, the operator can lift the traction line 251 by pressing the trigger handle 1. During the lifting of the traction line 251, the transmission rack 252 will move upward. The guide protrusion 23 and guide block 24 can guide and limit the transmission rack 252 throughout the process, ensuring smooth and jam-free movement. During the upward movement of the transmission rack 252, the rear one-way transmission gear 58 will rotate, thereby driving the spur gear 53 fixedly connected to the rear of the driven bevel gear 54 to... The rubber drive wheel 263 works in conjunction with the transmission wheel 262 to drive the stone retrieval instrument delivery tube 4 forward. Since both unidirectional transmission gears 58 are unidirectional, the two springs 253 fixedly connected to the bottom of the transmission rack 252 will not drive the transmission rod 56 to rotate when they reset through their own elasticity. This can effectively prevent the stone retrieval instrument delivery tube 4 from retracting accidentally and ensure the stability of the operation. Conversely, when the operator wants to retract the stone retrieval instrument delivery tube 4, he only needs to press the sliding plate 51 in the opposite direction to switch the front gear set meshing transmission and drive the transmission mechanism 26 in the opposite direction to achieve a smooth retraction and reset of the stone retrieval instrument delivery tube 4.

[0028] The stable guiding and automatic reset of the transmission rack 252 is achieved through the cooperation of the traction mechanism 25 and the guide protrusion 23, which effectively improves the stability of power transmission. The flexible switching between the wire feeding and take-up conditions of the equipment is achieved through the cooperation of the sliding plate 51, bevel gear set and transmission belt 57 inside the adjustment mechanism 5, which meets the bidirectional movement requirements of the instrument. The meshing cooperation between the spur gear 53 and the rubber transmission wheel 263, combined with the groove structure on the surface of the transmission mechanism 26, greatly improves the transmission friction and effectively eliminates the problem of instrument slippage. The unidirectional transmission characteristic of the unidirectional transmission gear 58 can avoid the instrument from retracting accidentally, which significantly improves the stability and controllability of the surgical operation.

[0029] Example 3 further achieves the purpose of disinfecting four surfaces based on Examples 1 and 2. Please refer to the details below. Figure 3As shown, the fully enclosed sealing cannula 3 includes a cannula body 31, which is fixedly connected to the right side of the handle housing 21. The overall fixing structure ensures the integrity of the connection between the cannula and the handle, preventing loosening or displacement during operation. A sealing head 32 is fixedly connected to the right end of the cannula body 31. The sealing head 32 can conform to the surgical wound to form a fully enclosed protective structure, blocking external air and impurities from entering the body cavity and reducing the risk of infection during surgery. A heating coil 33 is installed inside the cannula body 31. When energized, the heating coil 33 can generate uniform heat. The device can thoroughly heat and dry the surface of the stone retrieval instrument delivery tube 4 to remove residual alcohol, quickly removing residual liquid from the instrument surface and preventing residual liquid from entering the human bile duct and causing irritation and discomfort. The inner cavity of the cannula body 31 has a through hole 34, which provides a regular sliding channel for the stone retrieval instrument delivery tube 4. The stone retrieval instrument delivery tube 4 slides through the through hole 34 and can slide back and forth along the through hole 34 axially and extend into the human cavity, thereby successfully completing the minimally invasive stone removal operation of bile duct stones.

[0030] Minimally invasive closed stone retrieval is achieved through the cooperation of the fully enclosed sealing sleeve 3 and the stone retrieval instrument delivery tube 4. The sealing head 32 at the right end of the sleeve body 31 seals and protects the surgical wound, effectively preventing external contaminants from entering the human body cavity and reducing the probability of intraoperative infection. The heating coil 33 inside the sleeve body 31 heats and dries the residual alcohol on the surface of the stone retrieval instrument delivery tube 4, effectively removing residual liquid and avoiding irritation to the human bile duct, thus improving the cleanliness of the surgery. At the same time, the through hole 34 inside the sleeve body 31 can limit and guide the stone retrieval instrument delivery tube 4, ensuring the smooth axial sliding of the instrument and effectively improving the safety and stability of the overall surgical operation.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A single-port laparoscopic bile duct stone fully enclosed treatment device, comprising a trigger handle (1), characterized in that: The trigger handle (1) is rotatably connected to a grip handle (2) on the right side. An adjustment mechanism (5) is fixedly connected to the middle of the inner cavity of the grip handle (2). A fully enclosed sealing sleeve (3) is fixedly connected to the right side of the grip handle (2). A stone retrieval instrument delivery tube (4) is slidably connected to the middle of the fully enclosed sealing sleeve (3). The grip handle (2) includes a handle housing (21). A fixing block (22) is fixedly connected to the left side of the handle housing (21). Two symmetrically arranged guide protrusions (23) are fixedly connected to the inner cavity of the fixing block (22). A guide block (24) for guidance is fixedly connected to the upper left side of the guide protrusion (23). Two traction mechanisms (25) are slidably connected to the upper end of the guide block (24). A transmission mechanism (26) is rotatably connected to the upper part of the inner cavity of the fixing block (22).

2. The single-port laparoscopic bile duct stone fully enclosed treatment device according to claim 1, characterized in that: The traction mechanism (25) includes a traction line (251), one end of which is fixedly connected to the upper part of the trigger handle (1), and the other end of which is fixedly connected to a transmission rack (252). A spring (253) is fixedly connected to the bottom end of the transmission rack (252), and the left and right sides of the transmission rack (252) are slidably connected to the guide protrusion (23).

3. The single-port laparoscopic bile duct stone fully enclosed treatment device according to claim 2, characterized in that: The transmission mechanism (26) includes a second guide block (261), which is fixedly connected to the inner cavity of the handle housing (21). The right side of the second guide block (261) has a rubber wheel (262) that is rotatably connected to the middle of the inner cavity of the handle housing (21). A rubber transmission wheel (263) is fixedly connected to the bottom of the rubber wheel (262).

4. The single-port laparoscopic bile duct stone fully enclosed treatment device according to claim 1, characterized in that: The outer surface of the transmission mechanism (26) is provided with several grooves, which are used to increase the friction force on the movement of the stone-retrieving instrument delivery tube (4).

5. The single-port laparoscopic bile duct stone fully enclosed treatment device according to claim 3, characterized in that: The fully enclosed sealing sleeve (3) includes a sleeve body (31), which is fixedly connected to the right side of the handle housing (21). A sealing head (32) is fixedly connected to the right end of the sleeve body (31). A heating coil (33) is provided in the inner cavity of the sleeve body (31). The heating coil (33) is used to heat and dry the alcohol on the surface of the stone removal instrument delivery tube (4). A through hole (34) is opened in the middle of the inner cavity of the sleeve body (31). The stone removal instrument delivery tube (4) slides through the through hole (34). The stone removal instrument delivery tube (4) can slide back and forth along the through hole (34) and extend into the human body cavity.

6. The single-port laparoscopic bile duct stone fully enclosed treatment device according to claim 3, characterized in that: The adjusting mechanism (5) includes a sliding plate (51), which is slidably connected to the middle of the handle housing (21). The sliding plate (51) has two sets of coaxial through-holes, and a transmission rod (56) is rotatably inserted into each set of through-holes. The two transmission rods (56) are arranged in parallel and spaced apart. The transmission rods (56) are rotatably fitted with the through-holes with clearance. The front ends of the two transmission rods (56) are provided with driving bevel gears. The ends of the two driving bevel gears that are far apart from each other are fitted with driven bevel gears (54). Each of the driven bevel gears (54) is fixedly connected to a spur gear (53) on the side away from each other. The two spur gears (53) and the two driven bevel gears (54) are rotatably connected to a connecting rod (55) in the middle. The outer surfaces of the two connecting rods (55) are rotatably connected to a fixing plate (52). The left sides of the two fixing plates (52) are fixedly connected to a sliding plate (51). The outer surfaces of the two transmission rods (56) are wound with a transmission belt (57). The left ends of the two transmission rods (56) are fixedly connected to a one-way transmission gear (58).

7. The single-port laparoscopic bile duct stone fully enclosed treatment device according to claim 6, characterized in that: The outer surfaces of the two spur gears (53) are engaged with the rubber transmission wheel (263), and the two unidirectional transmission gears (58) are engaged with the transmission rack (252) in the adjacent direction.

8. The single-port laparoscopic bile duct stone fully enclosed treatment device according to claim 6, characterized in that: When the operator pushes the sliding plate (51) backward, the driving bevel gear at the rear will mesh with the driven bevel gear (54) at the rear. The operator can then lift the traction line (251) by pressing the trigger handle (1). During the lifting of the traction line (251), the transmission rack (252) will move upward. As the transmission rack (252) moves upward, it will drive the one-way transmission gear (58) at the rear to rotate, thereby driving the driven bevel gear (54) to rotate. 4) The spur gear (53) fixedly connected to the rear engages with the rubber transmission wheel (263) to transport the stone-retrieving instrument delivery tube (4). Since the two unidirectional transmission gears (58) are both unidirectional, the two springs (253) fixedly connected to the bottom of the transmission rack (252) will not drive the transmission rod (56) to rotate when they reset through their own elasticity. On the contrary, when the operator wants to retract the stone-retrieving instrument delivery tube (4), he only needs to press the sliding plate (51) in the opposite direction.

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