Sheep intestinal mucosa biopsy sampling forceps

Abstract

The utility model belongs to the technical field of medical instruments for veterinarians, particularly relates to a pair of sheep intestinal mucosa biopsy sampling forceps, and aims to solve the problems that the existing biopsy forceps are clumsy in guide mechanism, easy to cause tissue damage and sample integrity damage during sampling and lack of an integrated visualization function. Comprising a handle, a sampling catheter and a sampling clamp cover, the front end of the sampling catheter is provided with a cambered surface sampling end, the sampling clamp cover is movably arranged at the front end of the cambered surface sampling end, the front end of the sampling catheter is provided with a bent catheter body, and one end, connected with the sampling catheter, of the handle is provided with a bent control assembly. The bending control assembly is arranged in a matched mode, bending control can be conveniently conducted on the front end of the sampling catheter, the problem that rigid sampling forceps are difficult to flexibly turn and accurately position in a zigzag and narrow intestinal tract is solved, and the sampling forceps cover can be gently pushed out to wrap a tissue sample and can also be broken and pulled back to complete shearing sampling.

Description

Technical Field

[0001] This utility model relates to a sampling forceps, specifically a sheep intestinal mucosa biopsy sampling forceps, belonging to the field of veterinary medical device technology. Background Technology

[0002] Intestinal mucosal biopsy is a key technique in veterinary diagnosis and disease monitoring, playing a crucial role in the early diagnosis, treatment planning, and prognostic assessment of intestinal diseases in sheep. Obtaining high-quality mucosal tissue samples allows for pathological analysis, microbiological testing, and molecular biological research, providing a scientific basis for sheep flock health management. Traditional intestinal mucosal biopsy primarily relies on endoscopic-assisted sampling forceps manipulation. However, the unique and complex structure of the sheep intestine—including its winding anatomy, the fragility of the mucosal tissue, and limited operating space—poses numerous challenges to the clinical application of existing biopsy sampling techniques.

[0003] Conventional biopsy forceps often employ rigid or semi-rigid catheter designs, making it difficult to precisely adjust the angle and direction when navigating the bends of the sheep intestine. Operators frequently need to rely on experience and repeated attempts to reach the target tissue, which not only prolongs the procedure time and increases animal discomfort and the risk of complications, but can also lead to mucosal damage or even perforation due to repeated attempts. Furthermore, traditional sampling forceps often use a scissor-like cutting principle or a tearing sampling method, which can easily cause tissue compression damage and compromise sample integrity, affecting the accuracy of pathological diagnosis. Sample storage and retrieval mechanisms are also inadequate; most devices require complete withdrawal from the body after each sampling to obtain the sample, resulting in low efficiency and an increased risk of cross-infection.

[0004] In existing technologies, such as the endoscopic storable surface mucosal biopsy forceps disclosed in publication number CN207075905U, the device employs a design with a label bag inside the forceps head. This allows tissue samples to be pressed into the label bag after being gripped and the forceps head closes, without occupying forceps cavity space. This enables multiple consecutive samplings without removing the instrument. However, in practical applications, on the one hand, this instrument lacks an active guidance mechanism, relying on the rotation of the entire endoscope for direction control, making precise positioning difficult in narrow and winding environments like sheep intestines. On the other hand, its sampling method still uses the traditional forceps gripping principle, which, while reducing the number of withdrawals, does not solve the problems of tissue compression and damage. Although the label bag can temporarily store samples, storing multiple samples together may cause cross-contamination, and the sample retrieval process remains inconvenient. More importantly, the device lacks visualization capabilities, and the operator cannot directly observe the sampling location and process, still mainly relying on experience and feel. In complex anatomical environments, it is easy to miss the target lesion area. Secondly, a biopsy forceps disclosed in announcement number CN109528248B adopts the concept of cutting instead of tearing. A first cutting part is formed on the first forceps cup, and a second cutting part is formed on the second forceps cup. When the two forceps cups are brought together, the two cutting parts work together to cut the biopsy tissue instead of tearing it. Theoretically, this design can reduce damage to surrounding tissues, lower the probability of bleeding, and improve sampling accuracy, while avoiding tilting and lateral displacement of the forceps cup caused by rapid pulling and forceful closure. However, its guiding flexibility is limited, making it difficult to adapt to the complex and varied anatomical environment of the sheep intestine. The instrument lacks an active bending mechanism, making multi-angle adjustment impossible, which still makes sampling in some hard-to-reach areas difficult. Although this design improves the sampling method, it does not solve the problem of sample storage and management. After each sampling, the instrument still needs to be withdrawn to retrieve the sample, resulting in low operational efficiency. Furthermore, the device also lacks integrated visualization functions, making it impossible for the operator to observe the sampling process in real time and accurately locate the lesion. Utility Model Content

[0005] This invention provides a sheep intestinal mucosal biopsy sampling forceps to address the problems of cumbersome guiding mechanisms, easy tissue damage and sample integrity loss during sampling, and lack of integrated visualization functions in existing biopsy forceps.

[0006] The present invention achieves the above objectives through the following technical solution: a sheep intestinal mucosal biopsy sampling forceps, comprising a handle, a sampling catheter and a sampling forceps cover, wherein the handle is connected to the tail end of the sampling catheter, the front end of the sampling catheter is provided with an arc-shaped sampling end, the sampling forceps cover is movably disposed at the front end of the arc-shaped sampling end, the front end of the sampling catheter is provided with a bent tube body, and the end of the handle connected to the sampling catheter is provided with a bending control component.

[0007] The bending control assembly includes a ball seat and a steering ball. The steering ball is movable and locked inside the ball seat. The ball seat and the inner wall of the sampling catheter bending tube are provided with cross-shaped traction units. The rotation direction of the steering ball corresponds to the bending direction of the sampling catheter bending tube through the traction units.

[0008] A hydraulic drive unit is provided between the sampling clamp cover and the arc-shaped sampling end. The hydraulic drive unit has two drive modes: pushing and pulling.

[0009] A sample storage box is movably installed inside the curved sampling end, and an illumination lamp and a miniature camera are embedded in the inner inclined surface at the front end of the curved sampling end.

[0010] As a further embodiment of this utility model: a locking screw is threaded through the coaxial axis inside the handle, one end of the locking screw is movably pressed against the ball of the steering ball, and the other end of the locking screw is located on the outside of the handle. A rechargeable power supply is embedded in the handle body, and a display terminal is fixedly connected to the tube body of the sampling conduit near the handle. The rechargeable power supply is electrically connected to the electrical components of the sampling forceps, and the display terminal is connected to the signal of the miniature camera.

[0011] As a further embodiment of this utility model: the inner wall of the sampling conduit is provided with multiple bending grooves, and a bending support ring is connected between two adjacent bending grooves. The pulling unit includes a pulling steel rope, a rotating shaft, and an arc-shaped rubber wheel distributed in a cross shape. The pulling steel rope moves through the ring body of the bending support ring. The seat body of the ball seat is provided with a limiting cavity distributed in a cross shape. The rotating shaft is rotatably connected in the limiting cavity. The shaft body is coaxially fixedly connected to the arc-shaped rubber wheel, and the arc-shaped rubber wheel is in close contact with the ball body of the steering ball. One end of the pulling steel rope is fixedly connected to the arc-shaped sampling end, and the other end of the pulling steel rope is wound around the shaft body of the rotating shaft. The winding direction of the pulling steel rope on the two opposite rotating shafts is consistent.

[0012] As a further improvement of this utility model: the sampling conduit has cross-shaped grooves for steel ropes on the tube body between the bent tube body and the ball seat, and a pulling steel rope is threaded through the grooves.

[0013] As a further improvement of this utility model: the inside of the arc-shaped sampling end is provided with a placement groove, the bottom surface of the placement groove is inlaid with a rubber sleeve, and the sample storage box is placed in the placement groove.

[0014] As a further embodiment of this utility model: a push rod is symmetrically connected to the concave surface of the sampling clamp cover, a push rod piston is connected to the tail end of the push rod, and a push rod movable cavity is symmetrically arranged at the arc sampling end. The push rod is movably inserted into the push rod movable cavity, and a spring is sleeved on the rod body located in the push rod movable cavity.

[0015] As a further embodiment of this utility model: the arc-shaped sampling end is also provided with a pushing annular cavity and a pulling annular cavity. The pushing annular cavity is connected to one end of the two push rod movable cavities, and the pulling annular cavity is connected to the other end of the two push rod movable cavities. The pushing annular cavity, the pulling annular cavity, and the push rod movable cavities are all filled with hydraulic medium.

[0016] As a further improvement of this utility model: the sampling catheter has two hydraulic channels in its tube body, and two sets of hydraulic control units are provided on the tube body near the bending control component. The pushing annular cavity is connected to one of the hydraulic control units by a hydraulic channel, and the pulling annular cavity is connected to the other set of hydraulic control units by another hydraulic channel.

[0017] As a further embodiment of this utility model: the hydraulic control unit includes a reservoir, a pressing piston, and a pressing rod. The reservoir is fixedly connected to the outer wall of the sampling conduit. The pressing piston is movably disposed inside the reservoir. The pressing rod is movably connected through the upper end of the reservoir, and the bottom end of the pressing rod is fixedly connected to the pressing piston. The cavity inside the reservoir that communicates with the hydraulic channel is filled with hydraulic medium.

[0018] As a further improvement of this utility model, the edge of the sampling clamp cover is provided with a serrated edge.

[0019] The beneficial effects of this utility model are:

[0020] 1. This utility model is provided with a handle, a sampling catheter and a sampling forceps cover. The front end of the sampling catheter is provided with an arc-shaped sampling end. The sampling forceps cover is movably mounted on the front end of the arc-shaped sampling end. The front end of the sampling catheter is provided with a bent tube body. The end of the handle connected to the sampling catheter is provided with a bending control component. By providing a bent tube body at the front end of the sampling catheter and cooperating with the bending control component, it is easy to bend and control the front end of the sampling catheter, avoiding the problem that rigid sampling forceps are difficult to turn flexibly and accurately position in the tortuous and narrow intestine.

[0021] 2. The bending control component of this utility model includes a ball seat and a steering ball. The ball seat and the inner wall of the sampling conduit bending tube are provided with cross-shaped traction units. The rotation direction of the steering ball corresponds to the bending direction of the sampling conduit bending tube through the traction units. By setting a universal rotating steering ball, the operator's control of the handle can be transformed into multi-degree-of-freedom movement of the steering ball in the ball seat. With the traction units arranged in a cross shape, the rotation of the steering ball in any direction can be transmitted to the bending tube at the front end through the corresponding traction unit, thereby realizing precise and flexible universal adjustment of the orientation of the arc sampling end, which greatly reduces the difficulty of bending control of the front end of the sampling conduit.

[0022] 3. The sampling clamp cover and the arc-shaped sampling end of this utility model are provided with a hydraulic drive unit. The hydraulic drive unit has two driving modes: pushing and pulling. The use of a hydraulic drive unit with two driving modes can provide a more stable, uniform and powerful linear pushing and pulling force, ensuring that the sampling clamp cover can be gently pushed out to wrap the tissue sample, and can be decisively pulled back to complete the shearing sampling. This effectively avoids the problem of tissue tearing or sample integrity damage caused by jerking, jamming or uneven force that may occur due to mechanical transmission.

[0023] 4. The present invention features a sample storage box movably housed within the arc-shaped sampling end. An illumination lamp and a miniature camera are embedded in the inner inclined surface of the front end of the arc-shaped sampling end. The movably housed sample storage box allows for easy access and placement, achieving temporary and safe storage of the sample after sampling. This avoids contamination and inefficiency caused by repeated entry and exit from the body cavity. At the same time, the embedded illumination lamp and miniature camera transform the entire sampling process from blind operation to visual operation, greatly improving the intuitiveness, accuracy, and safety of the operation, and significantly reducing surgical risks. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the cross-sectional structure of the bent tube of the sampling catheter of this utility model.

[0027] Figure 4 This utility model Figure 3 Schematic diagram of the structure at point A in the middle;

[0028] Figure 5 This is a schematic diagram of the cross-sectional structure of the arc-shaped sampling end and the sampling clamp cover of this utility model in the closed state;

[0029] Figure 6 This is a schematic diagram of the cross-sectional structure of the arc-shaped sampling end and the sampling clamp cover of this utility model in the open state;

[0030] Figure 7 This is a cross-sectional structural diagram of the sample storage box and the arc-shaped sampling end of this utility model in a disassembled state;

[0031] Figure 8 This is a schematic diagram showing the spatial connection of the pushing annular cavity, the pulling annular cavity, and the push rod movable cavity of this utility model;

[0032] Figure 9 This is a schematic cross-sectional view of the bending control component of this utility model;

[0033] Figure 10 This is a schematic diagram of the sampling clamp cover structure of this utility model;

[0034] Figure 11 This utility model Figure 2 Schematic diagram of the structure at point B.

[0035] In the diagram: 1. Handle; 11. Locking screw; 12. Rechargeable power supply; 2. Sampling conduit; 21. Bending groove; 22. Bending support ring; 23. Hydraulic cavity; 24. Steel rope through groove; 25. Arc-shaped sampling end; 26. Pushing annular cavity; 27. Pulling annular cavity; 28. Push rod movable cavity; 29. ​​Placement groove; 210. Rubber sleeve; 211. Sample storage box; 212. Illumination lamp bead; 213. Miniature camera; 3. Bending control component; 31. Ball seat; 32. Steering ball; 33. Limiting cavity; 34. Rotating shaft; 35. Arc-shaped rubber wheel; 4. Sampling clamp cover; 41. Push rod; 42. Spring; 43. Push rod piston; 44. Serrated edge; 5. Liquid storage shell; 51. Pressing piston; 52. Pressing rod; 53. Hydraulic medium; 6. Display terminal; 7. Pulling steel rope. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] Example 1

[0038] like Figures 1 to 11 As shown, a sheep intestinal mucosal biopsy sampling forceps includes a handle 1, a sampling catheter 2, and a sampling forceps cover 4. The handle 1 is connected to the tail end of the sampling catheter 2. The front end of the sampling catheter 2 is provided with an arc-shaped sampling end 25. The sampling forceps cover 4 is movably disposed at the front end of the arc-shaped sampling end 25. The front end of the sampling catheter 2 is provided with a bent tube body. The end of the handle 1 connected to the sampling catheter 2 is provided with a bending control component 3. By providing a bent tube body at the front end of the sampling catheter 2 and cooperating with the bending control component 3, it is easy to bend and control the front end of the sampling catheter 2, avoiding the problem that rigid sampling forceps are difficult to turn flexibly and difficult to accurately position in the tortuous and narrow intestine.

[0039] The bending control component 3 includes a ball seat 31 and a steering ball 32. The steering ball 32 is movably locked inside the ball seat 31. The ball seat 31 and the inner wall of the bending tube of the sampling conduit 2 are provided with cross-shaped traction units. The rotation direction of the steering ball 32 corresponds to the bending direction of the bending tube of the sampling conduit 2 through the traction units. By setting the universal rotating steering ball 32, the operator's control of the handle 1 can be transformed into multi-degree-of-freedom movement of the steering ball 32 in the ball seat 31. With the traction units arranged in a cross shape, the rotation of the steering ball 32 in any direction can be transmitted to the bending tube at the front end through the corresponding traction unit, thereby realizing precise and flexible universal adjustment of the orientation of the arc sampling end 25, which greatly reduces the difficulty of bending control of the front end of the sampling conduit 2.

[0040] A hydraulic drive unit is provided between the sampling clamp cover 4 and the arc-shaped sampling end 25. The hydraulic drive unit has two driving modes: pushing and pulling. The use of a hydraulic drive unit with two driving modes can provide a more stable, uniform and powerful linear pushing and pulling force, ensuring that the sampling clamp cover 4 can be gently pushed out to wrap the tissue sample, and can be decisively pulled back to complete the shearing sampling. This effectively avoids the problems of tissue tearing or sample integrity damage caused by jerking, jamming or uneven force that may occur due to mechanical transmission.

[0041] A sample storage box 211 is movably installed inside the arc-shaped sampling end 25. An illumination lamp 212 and a miniature camera 213 are embedded in the inner inclined surface of the front end of the arc-shaped sampling end 25. The movably installed sample storage box 211 can be easily put in and taken out, realizing the temporary safe storage of the sample after sampling and avoiding the pollution and inefficiency caused by repeated entry and exit of the body cavity. At the same time, the embedded illumination lamp 212 and miniature camera 213 make the entire sampling process change from blind operation to visual operation, which greatly improves the intuitiveness, accuracy and safety of the operation and significantly reduces the surgical risk.

[0042] Example 2

[0043] Improvements based on Example 1:

[0044] like Figures 1 to 6 and Figure 9As shown, a locking screw 11 is threaded through the coaxial axis inside the handle 1. One end of the locking screw 11 movably abuts against the ball of the steering ball 32, and the other end of the locking screw 11 is located on the outside of the handle 1. A rechargeable power supply 12 is embedded in the handle body of the handle 1. A display terminal 6 is fixedly connected to the tube of the sampling conduit 2 near the handle 1. The rechargeable power supply 12 is electrically connected to the various electrical components of the sampling forceps, and the display terminal 6 is signal-connected to the miniature camera 213. When the operator adjusts the arc-shaped sampling end 25 at the front end to the ideal angle by rotating the steering ball 32, the locking screw 11 can be tightened to press its end against the steering ball 32. The resulting huge friction force instantly locks the steering ball 32, thus firmly fixing the adjusted end. The properly positioned bending posture prevents unexpected changes in the front angle due to tension variations in the internal traction steel rope 7 or contact resistance from external tissues during subsequent advancement, sampling, or withdrawal, ensuring the stability and predictability of the operation. The rechargeable power supply 12 is self-powered, providing a continuous and stable energy supply to the illumination lamp 212 and the miniature camera 213. The real-time image signals of the intestinal tract captured by the miniature camera 213 can be transmitted to the display terminal 6, providing the operator with an intuitive visual feedback interface. The operator can perform precise navigation and sampling operations while looking at the screen, completely eliminating the era of blind operation based solely on touch and experience, and greatly improving the accuracy and success rate of biopsy sampling.

[0045] Furthermore, the inner wall of the sampling conduit 2 has multiple bending grooves 21, and a bending support ring 22 is connected between two adjacent bending grooves 21. The pulling unit includes a pulling steel rope 7 arranged in a cross shape, a rotating shaft 34, and an arc-shaped rubber wheel 35. The pulling steel rope 7 moves through the ring of the bending support ring 22. The seat of the ball seat 31 has a limiting cavity 33 arranged in a cross shape. The rotating shaft 34 is rotatably connected in the limiting cavity 33. The shaft of the rotating shaft 34 is coaxially fixedly connected to the arc-shaped rubber wheel 35, and the arc-shaped rubber wheel 35 is tightly attached to the ball of the steering ball 32. One end of the pulling steel rope 7 is fixedly connected to the arc-shaped sampling end 25, and the other end of the pulling steel rope 7 is wound around the shaft of the rotating shaft 34. The winding direction of the pulling steel rope 7 on the two opposite rotating shafts 34 is consistent. The overall layout of the unit is in a cross shape, corresponding to the X and Y axes in space, to achieve true omnidirectional bending. The traction steel cable 7 is movably passed through a series of bent support rings 22 inside the bent tube of the sampling conduit 2. These bent support rings 22 not only support the shape of the conduit and prevent collapse, but also provide a smooth passage for the steel cable, reducing friction loss during movement. When the operator manually turns the steering ball 32 at the handle 1, the huge friction between the ball surface and the rubber wheel surface drives the four arc-shaped rubber wheels 35 and the rotating shaft 34 fixedly connected to them on the same axis to rotate. When the steering ball 32 rotates in a certain direction, it will drive a pair of opposing arc-shaped rubber wheels 35 and rotating shaft 34 to rotate in opposite directions through friction. Because the winding direction is consistent, one shaft 34 will wind and tighten a tension steel rope 7, thereby pulling the arc sampling end 25 to bend to that side, while the other shaft 34 will simultaneously release another tension steel rope 7, providing the necessary length compensation for bending. This allows the operator to control every degree and every direction of the front-end bending very precisely, achieving an innovative improvement over the traditional push-pull steel wire control method, with higher precision and reliability.

[0046] Furthermore, the sampling conduit 2 has cross-shaped steel rope grooves 24 on its tube body located between the bent tube body and the ball seat 31, and a traction steel rope 7 is threaded through the steel rope grooves 24. The cross-shaped steel rope grooves 24 orderly separate the four traction steel ropes 7, avoiding the risk of the traction steel ropes 7 getting tangled, rubbed, or even knotted in the narrow tube cavity, ensuring the independence and reliability of power transmission. Moreover, the cross-shaped distribution corresponds completely to the layout of the internal traction unit, ensuring the neatness and consistency of the mechanical structure.

[0047] Furthermore, the interior of the arc-shaped sampling end 25 is provided with a placement groove 29. A rubber sleeve 210 is embedded in the inner wall of the bottom surface of the placement groove 29. The sample storage box 211 is movably placed in the placement groove 29. The rubber sleeve 210 can generate an effective clamping force and friction force on the inserted sample storage box 211, ensuring that the sample storage box 211 will not accidentally fall off or shift during operation, such as when the instrument moves, turns, or even slightly vibrates, thus ensuring the safety of the sample. The rubber sleeve 210 can also play a role in buffering and shock absorption, protecting the collected fragile mucosal tissue samples from mechanical compression and damage to their integrity during storage and transportation. When it is necessary to remove the sample for testing, the operator can overcome this friction force and smoothly remove the sample storage box 211 from the placement groove 29, which can be reused.

[0048] like Figure 1 , Figure 2 , Figure 7 , Figure 8 , Figure 10 and Figure 11 As shown, a push rod 41 is symmetrically connected to the concave surface of the sampling clamp cover 4. A push rod piston 43 is connected to the tail end of the push rod 41. The arc-shaped sampling end 25 has a push rod movable cavity 28 arranged symmetrically. The push rod 41 is movably inserted into the push rod movable cavity 28. A spring 42 is sleeved on the rod body of the push rod 41 located in the push rod movable cavity 28. In the initial state, the spring 42 can use the preload to help keep the sampling clamp cover 4 in the closed state. After the pushing process is completed, the spring 42 can assist in the pullback.

[0049] Furthermore, the arc-shaped sampling end 25 is also provided with a pushing annular cavity 26 and a pulling annular cavity 27. The pushing annular cavity 26 is connected to one end of the two push rod movable cavities 28, and the pulling annular cavity 27 is connected to the other end of the two push rod movable cavities 28. The pushing annular cavity 26, the pulling annular cavity 27, and the push rod movable cavity 28 are all filled with hydraulic medium 53. The pushing annular cavity 26 is connected to the end of the two push rod movable cavities 28 near the bottom of the push rod piston 43, while the pulling annular cavity 27 is connected to the end of the two push rod movable cavities 28 near the piston rod of the push rod piston 43. These cavities are all filled with incompressible hydraulic medium 53. The design of the annular cavity is equivalent to a hydraulic parallel circuit, which can ensure that the pressure is applied to the two push rod pistons 43 simultaneously and evenly, thereby ensuring that the sampling clamp cover 4 is pushed out or retracted smoothly, without jamming, and in a straight line, completely avoiding the problem of clamp cover tilting, jamming, or shearing action failure caused by the asynchronous movement of the two push rods 41.

[0050] Furthermore, the sampling conduit 2 has two hydraulic channels 23. Two sets of hydraulic control units are installed on the body of the sampling conduit 2 near the bending control component 3. One hydraulic channel 23 connects the pushing annular cavity 26 to one of the hydraulic control units, and another hydraulic channel 23 connects the pulling annular cavity 27 to the other set of hydraulic control units. The two hydraulic channels 23 are used for the two operating modes of pushing and pulling respectively: one hydraulic channel 23 connects the front pushing annular cavity 26 to one of the hydraulic control units near the bending control component 3 at the rear; while the other hydraulic channel 23 connects the pulling annular cavity 27 to the other set of hydraulic control units. This dual-channel, independent control design ensures that the pushing and pulling actions are completely isolated in the hydraulic circuit and do not interfere with each other, so that the operator can clearly and independently control the extension and retraction of the clamp cover.

[0051] Furthermore, the hydraulic control unit includes a reservoir 5, a pressing piston 51, and a pressing rod 52. The reservoir 5 is fixedly connected to the outer wall of the sampling conduit 2. The pressing piston 51 is movably disposed inside the reservoir 5. The pressing rod 52 is movably connected through the upper end of the reservoir 5, and the bottom end of the pressing rod 52 is fixedly connected to the pressing piston 51. The cavity inside the reservoir 5 that communicates with the hydraulic channel 23 is filled with hydraulic medium 53. When the operator presses the pressing rod 52 with their finger, it pushes the pressing piston 51 downward, squeezing the hydraulic medium 53 below it. The pressure generated is transmitted through the hydraulic channel 23 to the corresponding annular cavity at the front end, thereby driving the push rod piston 43 to move. When pressure is supplied to the pushing annular cavity 26, the clamp cover is pushed out; when pressure is supplied to the pulling back annular cavity 27, the clamp cover is retracted, thus realizing precise displacement control of the sampling clamp cover 4.

[0052] Furthermore, the sampling clamp cover 4 has a serrated edge 44. When the sampling clamp cover 4 is pushed out and contacts and covers the target mucosal tissue, the serrated edge 44 can effectively "bite" or "grab" the relatively smooth and soft mucosal surface, increase the friction between the clamp cover and the tissue, and prevent the tissue from slipping out of the concave surface of the clamp cover during the clamp cover pull-back shearing process, thereby greatly improving the success rate of sampling operation and the integrity of the sample obtained.

[0053] Working principle: The operator holds the handle 1 and inserts the front end of the sampling catheter 2 into the sheep intestine. Powered by the rechargeable power supply 12, the lighting bulb 212 illuminates the area in front, and the miniature camera 213 captures images in real time and transmits them to the display terminal 6 for the operator to observe and navigate.

[0054] When the forward direction needs to be adjusted, the operator uses their finger to move the steering ball 32 so that it rotates omnidirectionally within the ball seat 31. The steering ball 32 drives the four arc-shaped rubber wheels 35 and the rotating shaft 34 that are in close contact with it to rotate through friction. The rotation of the rotating shaft 34 will wind or release the corresponding traction steel rope 7. The traction steel rope 7 passes through the steel rope groove 24 and the bending support ring 22, pulling or releasing the arc-shaped sampling end 25, thereby controlling the front bending tube body to bend through the bending groove 21, realizing precise omnidirectional adjustment of the position of the arc-shaped sampling end 25. After the angle adjustment is completed, the locking screw 11 can be tightened to press against the steering ball 32 to lock the angle.

[0055] When the target tissue is detected, the operator presses the pressing lever 52 of one set of hydraulic control units, pushing the pressing piston 51 to squeeze the hydraulic medium 53 in the reservoir 5. The pressure is transmitted through a hydraulic channel 23 to the pushing annular cavity 26, which in turn pushes the push rod piston 43 in the two push rod movable cavities 28 to move against the force of the spring 42. The sampling clamp cover 4 is smoothly pushed out through the symmetrical push rod 41, and its serrated edge 44 can effectively grasp the mucosal tissue. Subsequently, the operator presses the pressing lever 52 of the other set of hydraulic control units, and the pressure is transmitted through another hydraulic channel 23 to the pull-back annular cavity 27, which acts on the other side of the push rod piston 43. Together with the rebound force of the spring 42, the sampling clamp cover 4 is decisively pulled back, so that it produces a shearing action with the arc-shaped sampling end 25, cutting off and obtaining the tissue sample.

[0056] The sample is encased in the concave surface of the sampling clamp cover 4 and can then be collected into the sample storage box 211 in the placement groove 29 of the arc sampling end 25. Finally, the sample storage box 211 is removed to complete the sampling. The entire process is carried out under lighting and video monitoring, which is flexible, accurate and safe.

[0057] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0058] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sheep intestinal mucosal biopsy sampling forceps, comprising a handle (1), a sampling catheter (2), and a sampling forceps cap (4), characterized in that: The handle (1) is connected to the tail end of the sampling conduit (2). The front end of the sampling conduit (2) is provided with an arc-shaped sampling end (25). The sampling clamp cover (4) is movably placed at the front end of the arc-shaped sampling end (25). The front end of the sampling conduit (2) is provided with a bent tube body. The end of the handle (1) connected to the sampling conduit (2) is provided with a bending control component (3). The bending control component (3) includes a ball seat (31) and a steering ball (32). The steering ball (32) is movably locked inside the ball seat (31). The ball seat (31) and the inner wall of the bending tube of the sampling conduit (2) are provided with cross-shaped traction units. The rotation direction of the steering ball (32) corresponds to the bending direction of the bending tube of the sampling conduit (2) through the traction units. A hydraulic drive unit is provided between the sampling clamp cover (4) and the arc-shaped sampling end (25), and the hydraulic drive unit has two driving modes: pushing and pulling. A sample storage box (211) is movably installed inside the arc-shaped sampling end (25), and an illumination lamp (212) and a miniature camera (213) are embedded in the inner inclined surface of the front end of the arc-shaped sampling end (25).

2. The sheep intestinal mucosal biopsy sampling forceps according to claim 1, characterized in that: A locking screw (11) is threaded through the coaxial axis inside the handle (1). One end of the locking screw (11) is movably abutted against the ball of the steering ball (32). The other end of the locking screw (11) is located on the outside of the handle (1). A rechargeable power supply (12) is embedded in the handle (1). A display terminal (6) is fixedly connected to the tube of the sampling conduit (2) near the handle (1). The rechargeable power supply (12) is electrically connected to each electrical component of the sampling forceps. The display terminal (6) is signal connected to the miniature camera (213).

3. The sheep intestinal mucosal biopsy sampling forceps according to claim 1, characterized in that: The sampling conduit (2) has multiple bending grooves (21) on its inner wall, and a bending support ring (22) connects two adjacent bending grooves (21). The pulling unit includes a pulling steel rope (7) arranged in a cross shape, a rotating shaft (34), and an arc-shaped rubber wheel (35). The pulling steel rope (7) moves through the ring body of the bending support ring (22). The ball seat (31) has a limiting cavity (33) arranged in a cross shape. The rotating shaft (34) has a limiting cavity (35) arranged in a cross shape. 4) Rotary connection is made in the limiting cavity (33). The shaft of the rotating shaft (34) is fixedly connected to the arc surface rubber wheel (35) on the same axis. The arc surface rubber wheel (35) is in close contact with the ball of the steering ball (32). One end of the pulling steel rope (7) is fixedly connected to the arc surface sampling end (25). The other end of the pulling steel rope (7) is wrapped around the shaft of the rotating shaft (34). The winding direction of the pulling steel rope (7) on the shafts of the two opposite rotating shafts (34) is consistent.

4. The sheep intestinal mucosal biopsy sampling forceps according to claim 3, characterized in that: The sampling conduit (2) has a cross-shaped steel rope groove (24) on the tube body between the bent tube body and the ball seat (31), and a pulling steel rope (7) is threaded through the steel rope groove (24).

5. The sheep intestinal mucosal biopsy sampling forceps according to claim 4, characterized in that: The arc-shaped sampling end (25) has an internal placement groove (29), and the bottom wall of the placement groove (29) is inlaid with a rubber sleeve (210). The sample storage box (211) is placed in the placement groove (29).

6. The sheep intestinal mucosal biopsy sampling forceps according to claim 1, characterized in that: The sampling clamp cover (4) is symmetrically connected to a push rod (41) on its inner concave surface. The tail end of the push rod (41) is connected to a push rod piston (43). The arc-shaped sampling end (25) has a push rod movable cavity (28) arranged symmetrically. The push rod (41) is movably inserted into the push rod movable cavity (28), and a spring (42) is sleeved on the rod body of the push rod (41) located in the push rod movable cavity (28).

7. The sheep intestinal mucosal biopsy sampling forceps according to claim 6, characterized in that: The arc-shaped sampling end (25) is also provided with a pushing annular cavity (26) and a pulling annular cavity (27). The pushing annular cavity (26) is connected to one end of the two push rod movable cavities (28), and the pulling annular cavity (27) is connected to the other end of the two push rod movable cavities (28). The pushing annular cavity (26), the pulling annular cavity (27) and the push rod movable cavity (28) are all filled with hydraulic medium (53).

8. The sheep intestinal mucosal biopsy sampling forceps according to claim 7, characterized in that: The sampling conduit (2) has two hydraulic channels (23) on its body. Two sets of hydraulic control units are provided on the body of the sampling conduit (2) near the bending control component (3). The pushing annular cavity (26) is connected to one of the hydraulic control units by a hydraulic channel (23), and the pulling annular cavity (27) is connected to the other set of hydraulic control units by another hydraulic channel (23).

9. The sheep intestinal mucosal biopsy sampling forceps according to claim 8, characterized in that: The hydraulic control unit includes a reservoir (5), a pressing piston (51), and a pressing rod (52). The reservoir (5) is fixedly connected to the outer wall of the sampling conduit (2). The pressing piston (51) is movably disposed inside the reservoir (5). The pressing rod (52) is movably connected through the upper end of the reservoir (5), and the bottom end of the pressing rod (52) is fixedly connected to the pressing piston (51). The cavity inside the reservoir (5) that is connected to the hydraulic channel (23) is filled with hydraulic medium (53).

10. The sheep intestinal mucosal biopsy sampling forceps according to claim 1, characterized in that: The sampling clamp cover (4) has a serrated edge (44) at its edge.

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