Biopsy forceps with flushing function

Abstract

The invention relates to the technical field of medical instruments, in particular to biopsy forceps with a flushing function, which comprise a handle, a circular through groove is formed in the handle, a sliding through groove is formed in the handle, an outer tube is fixedly connected to the front end of the handle, a fixing ring is fixedly connected to the other end of the handle, and the fixing ring is fixedly connected to the outer tube. The end, away from the handle, of the outer tube is fixedly connected with a fixing head, the circular through groove is communicated with the outer tube, the handle is provided with a sampling mechanism, the sampling mechanism comprises a water injection assembly, and the water injection assembly comprises a rectangular through groove formed in the handle, so that the problem that in a clinical practical operation scene, a sampling part is often accompanied by secretions, bloodstains or tissue debris residues, and the sampling efficiency is high is solved. The problems that existing sampling forceps do not have a matched flushing function, a sampling area cannot be cleaned in real time, accurate observation and positioning of a diseased region by medical staff are affected, a sample is possibly polluted, and then the accuracy of subsequent pathological diagnosis is affected are solved.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a live sampling forceps with a rinsing function. Background Technology

[0002] Vial sampling forceps are commonly used instruments in the medical field, primarily used to obtain living tissue samples for pathological examination. With the development of minimally invasive surgical techniques, the requirements for the functionality and convenience of sampling forceps are becoming increasingly stringent. They are widely used in various clinical departments such as gastroenterology, respiratory medicine, and urology. Their core function is to accurately obtain living tissue samples from lesions or suspected lesions inside the human body through endoscopic guidance and other methods.

[0003] In existing technologies, in clinical practice, sampling sites are often accompanied by secretions, bloodstains, or tissue debris. However, existing sampling forceps lack a washing function, making it impossible to clean the sampling area in real time. This not only affects the accurate observation and location of lesions by medical staff but may also lead to sample contamination, thereby affecting the accuracy of subsequent pathological diagnosis.

[0004] Therefore, this application provides a live sampling forceps with a rinsing function. Summary of the Invention

[0005] The purpose of this application is to solve at least one technical problem raised in the background art.

[0006] This application provides a live sampling forceps with a rinsing function, including a handle. The handle has a circular through-slot and a sliding through-slot. An outer tube is fixedly connected to the front end of the handle, and a retaining ring is fixedly connected to the other end of the handle. A retaining head is fixedly connected to the end of the outer tube away from the handle. The circular through-slot communicates with the outer tube. A sampling mechanism is provided on the handle, the sampling mechanism including:

[0007] The water injection assembly includes a rectangular through groove on the handle, and sliding grooves are provided on opposite side walls of the rectangular through groove. A connecting nozzle is slidably connected in a pair of sliding grooves. An infusion tube is fixedly connected to the bottom of the connecting nozzle and is located in the circular through groove and the outer tube. An outlet tube is slidably connected to the fixed head, and the end of the infusion tube away from the connecting nozzle is fixedly connected in the outlet tube.

[0008] A clamp assembly, mounted on the fixed head, is used to clamp live samples.

[0009] A lever assembly, mounted on the handle, is used to control the clamp assembly;

[0010] A one-way valve assembly is installed inside the outlet pipe for one-way liquid discharge.

[0011] By adopting the above technical solution, this live sample forceps solves the problems of traditional sample forceps, such as the need to carry additional rinsing equipment, cumbersome operation, and susceptibility to interference from impurities in the sampling field. It integrates rinsing and sampling functions, is easy to operate, can accurately rinse the sampling area to improve the clarity of the field of view, and its unidirectional liquid outlet design prevents backflow, ensuring sample purity and operational safety, and improving sampling efficiency and quality.

[0012] Preferably, the fixing head includes a circular sleeve fixedly attached to the end of the outer tube away from the handle, a circular cavity is opened on the side of the circular sleeve near the outer tube, a pair of fixing baffles are fixedly attached to the side of the circular sleeve away from the outer tube, a circular hole is opened on the side of the circular sleeve away from the outer tube, and the liquid outlet tube is slidably connected in the circular hole.

[0013] By adopting the above technical solution, the problems of easy interference in the transmission components of traditional sampling clamps, slippage and displacement of the liquid outlet tube, and unstable installation of the clamp assembly are solved. Its circular sleeve provides a stable installation base, the circular cavity avoids interference between components, the circular hole guides the sliding of the liquid outlet tube, and the fixed baffle limits the clamp, ensuring precise and smooth operation of each component, and improving sampling stability and operational reliability.

[0014] Preferably, the clamp assembly includes a rotating shaft rotatably connected to the side wall of the fixed baffle through a rotating hole, a first clamp head fixedly connected to a pair of rotating shafts, and a second clamp head fixedly connected to a pair of rotating shafts.

[0015] Preferably, the first clamp head includes a first rotating plate fixedly connected to a rotating shaft, and a first chuck is fixedly connected to one end of the first rotating plate away from the rotating shaft.

[0016] Preferably, the second clamping head includes a second rotating plate fixedly connected to the rotating shaft, and a pair of second rotating plates are located between a pair of first rotating plates, with a second chuck fixedly connected to the end of the second rotating plate away from the rotating shaft.

[0017] Preferably, the first rotating plate has a first arc-shaped groove, the second rotating plate has a second arc-shaped groove, and a pair of extrusion blocks are fixedly connected to the liquid outlet pipe, and the pair of extrusion blocks are arranged opposite to each other. The extrusion blocks are slidably connected in the first arc-shaped groove and the second arc-shaped groove.

[0018] By adopting the above technical solution, the problems of asynchronous operation of traditional clamp heads, easy interference during opening and closing, and low clamping accuracy are solved. Through the linkage between the arc-shaped sliding groove and the squeezing block, the clamp heads open and close synchronously. The sandwich-type layout avoids interference, the transmission is precise, the clamping stability and sample integrity are improved, and the risk of tissue damage is reduced.

[0019] Preferably, the pull rod assembly includes a sliding ring slidably connected in a sliding groove, a steel wire fixed to one side of the sliding ring, and the steel wire is located in the circular groove and the outer tube, and a circular block is fixed to the end of the steel wire away from the sliding ring.

[0020] Preferably, the circular block is fixed to one end of the outlet tube, the circular block is slidably connected inside the circular cavity, the circular block is connected to the wall of the circular cavity by a spring, and the infusion tube passes through the circular block.

[0021] By adopting the above technical solution, the problems of jamming, unstable reset, and inaccurate power transmission in traditional transmission methods are solved. The sliding ring and steel wire drive smoothly, and the circular block, in conjunction with the spring, achieves stable reset while ensuring unobstructed infusion tubing. This improves the accuracy of the clamp head's movement and the stability of the equipment, and reduces the operator's workload.

[0022] Preferably, the one-way valve assembly includes a fixed tube fixed to the inner wall of the end of the outlet pipe away from the circular block, the inner wall of the fixed tube having an inclined surface, a pair of support plates fixed to the side wall of the circular sleeve, and a pair of outlet holes on both the first clamp and the second clamp.

[0023] Preferably, a circular rod is fixedly connected between a pair of support plates via a fixing frame. A plastic block is fixedly connected to one end of the circular rod inside the fixing tube, and the plastic block is slidably connected inside the liquid outlet tube. A conical block is fixedly connected to the side wall of the plastic block, and the surface of the conical block is in contact with the inclined surface. A set of flexible hoses is fixedly connected to the conical block. The set of flexible hoses is respectively fixed to the inner walls of the first clamp and the second clamp, and the flexible hoses are connected to the liquid outlet.

[0024] By adopting the above technical solution, the problems of easy backflow of flushing fluid and unreliable sealing in traditional sampling forceps are solved. The conical block and inclined surface adhere and seal, achieving unidirectional fluid flow, effectively preventing tissue fluid backflow and cross-contamination, and ensuring sample purity; the stable support structure improves the accuracy of the opening and closing action, and enhances operational safety.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. The live sampling forceps with rinsing function described in this application integrates the clamping and rinsing functions into one unit, eliminating the need for additional rinsing equipment, thus simplifying the operation process. During the sampling process, the sampling site can be rinsed simultaneously, effectively removing secretions, impurities, and bloodstains from the tissue surface. This avoids the problem that in clinical practice, the sampling site is often accompanied by secretions, bloodstains, or tissue debris. Existing sampling forceps lack a matching rinsing function, making it impossible to clean the sampling area in real time. This not only affects the accurate observation and positioning of lesions by medical staff but may also lead to sample contamination, thereby affecting the accuracy of subsequent pathological diagnosis.

[0027] 2. The live sampling forceps with rinsing function described in this application allows for simultaneous operation of rinsing, clamping, and stopping rinsing by pushing the sliding ring to clamp the tissue during sampling, while the liquid outlet tube retracts synchronously to close the one-way valve. The pushing and releasing action of the sliding ring enables a continuous operation of rinsing, clamping, sampling, and stopping rinsing, reducing operation steps, lowering the difficulty of operation in confined spaces, improving sampling efficiency, and simplifying operation.

[0028] 3. The live sampling forceps with flushing function described in this application achieves one-way liquid discharge by sealing the conical block inside the liquid outlet tube with the inclined surface of the fixed tube. In the non-flushing state, the one-way valve is closed, which can effectively prevent external body fluids and impurities from entering the infusion tube and the liquid outlet tube, thus avoiding pipeline contamination. During flushing, the channel can be automatically opened by simply pulling the sliding ring, without the need for additional control mechanisms. This simplifies the operation, prevents the backflow of flushing fluid and body fluid, ensures the cleanliness of the flushing fluid, and avoids cross-contamination between different sampling sites, thereby improving the hygiene and safety of the device. Attached Figure Description

[0029] Figure 1 This is a perspective view of an embodiment of this application;

[0030] Figure 2 This is a cross-sectional view of the handle in an embodiment of this application;

[0031] Figure 3 This is a schematic diagram of the fixing head in an embodiment of this application;

[0032] Figure 4 This is a schematic diagram of the first clamp in an embodiment of this application;

[0033] Figure 5 This is a schematic diagram of the rotation shaft in an embodiment of this application;

[0034] Figure 6 This is a cross-sectional view of the fixed head in an embodiment of this application;

[0035] Figure 7 This is a cross-sectional view of the outlet pipe in an embodiment of this application;

[0036] Figure 8 This is a schematic diagram of the cone-shaped block in an embodiment of this application;

[0037] Figure 9 This is a cross-sectional view of the fixed tube in an embodiment of this application.

[0038] In the diagram: 1. Handle; 2. Circular through groove; 3. Sliding through groove; 4. Outer tube; 5. Fixing ring; 6. Fixing head; 7. Rectangular through groove; 8. Sliding groove; 9. Connecting nozzle; 10. Infusion tube; 11. Outlet tube; 12. Circular sleeve; 13. Circular cavity; 14. Fixing baffle; 15. Circular hole; 16. Rotating shaft; 17. First clamp head; 18. Second clamp head; 19. First rotating plate; 20. First chuck; 21. Second rotating plate; 22. Second chuck; 23. First arc-shaped sliding groove; 24. Second arc-shaped sliding groove; 25. Squeezing block; 26. Sliding ring; 27. Steel wire; 28. Circular block; 29. ​​Spring; 30. Fixing tube; 31. Inclined surface; 32. Support plate; 33. Circular rod; 34. Conical block; 35. Outlet hole; 36. Tube; 37. Plastic block. Detailed Implementation

[0039] The following is in conjunction with the appendix Figure 1 To be continued Figure 9 This application will be described in further detail below.

[0040] Example 1

[0041] Please refer to the following carefully. Figure 1 , Figure 2 , Figure 3 A live sampling forceps with a rinsing function includes a handle 1, a circular through groove 2 and a sliding through groove 3 on the handle 1, an outer tube 4 fixedly connected to the front end of the handle 1, a fixing ring 5 fixedly connected to the other end of the handle 1, and a fixing head 6 fixedly connected to the end of the outer tube 4 away from the handle 1. The circular through groove 2 is connected to the outer tube 4. A sampling mechanism is provided on the handle 1, and the sampling mechanism includes a water injection component, including a rectangular through groove 7 on the handle 1, with each opposite side wall of the rectangular through groove 7 having a... A sliding groove 8, with a connecting nozzle 9 slidably connected within a pair of sliding grooves 8. The bottom of the connecting nozzle 9 is fixedly connected to an infusion tube 10, which is located within the circular through groove 2 and the outer tube 4. An outlet tube 11 is slidably connected to the fixed head 6, with the end of the infusion tube 10 away from the connecting nozzle 9 fixedly connected to the outlet tube 11. A clamp assembly is mounted on the fixed head 6 for clamping live samples. A pull rod assembly is mounted on the handle 1 for controlling the clamp assembly. A one-way valve assembly is mounted within the outlet tube 11 for one-way discharge.

[0042] Specifically, after sampling, the first step is to prepare the flushing medium. The operator adjusts the connector 9 to the appropriate position along the sliding grooves 8 on both sides of the rectangular through groove 7, ensuring that the connector 9 is securely installed and slides smoothly. Then, the external flushing medium is supplied to the syringe or infusion bag containing physiological saline, and sealed with the connector 9 to ensure no leakage at the connection. At the same time, it is confirmed that the infusion tube 10 is not twisted or jammed inside the circular through groove 2 and the outer tube 4, ensuring that the flushing medium delivery channel is unobstructed. The operator holds the handle 1 and uses the pull rod assembly to pre-control the clamp assembly on the fixing head 6 to be in the closed state, avoiding accidental contact or damage to surrounding tissues during insertion. Then, the fixing head 6 and the closed clamp assembly are slowly inserted along the target sampling site until... Upon reaching the preset sampling position, the connection structure between the circular through-slot 2 and the outer tube 4 provides stable accommodation and guidance for the transmission components of the infusion tube 10 and the pull rod assembly, ensuring smooth and precise insertion. After reaching the sampling position, the clamp assembly is initially adjusted to the open state by the pull rod assembly to prepare for flushing. Subsequently, the external flushing medium is supplied to the connected nozzle 9, which enters the infusion tube 10. The medium is guided and transported through the circular through-slot 2 and the outer tube 4 by the infusion tube 10, and finally enters the outlet tube 11. The medium flows out of the outlet tube 11 and is precisely sprayed into the sampling area through the outlet holes 35 opened on both the first clamp 20 and the second clamp 22, flushing away secretions, bloodstains and other impurities at the sampling site, exposing a clear sampling target point, and achieving a rapid re-sampling effect.

[0043] Please refer to this carefully. Figure 5 , Figure 6 The fixed head 6 includes a circular sleeve 12 fixedly attached to the end of the outer tube 4 away from the handle 1. A circular cavity 13 is opened on the side of the circular sleeve 12 close to the outer tube 4. A pair of fixed baffles 14 are fixedly attached to the side of the circular sleeve 12 away from the outer tube 4. A circular hole 15 is opened on the side of the circular sleeve 12 away from the outer tube 4. The liquid outlet tube 11 is slidably connected in the circular hole 15.

[0044] Specifically, the circular sleeve 12 of the fixed head 6 is fixedly connected to the outer tube 4, providing a stable installation and operating foundation for the liquid outlet tube 11 and the pull rod transmission components, preventing the components from shaking or shifting during sampling and rinsing; at the same time, the circular hole 15 guides the sliding of the liquid outlet tube 11, ensuring that the liquid outlet tube 11 always moves in the preset direction, improving the accuracy of rinsing and sampling.

[0045] Please refer to this carefully. Figure 4 , Figure 5 The clamp assembly includes a rotating shaft 16 rotatably connected to the side wall of the fixed baffle 14 through a rotating hole, a first clamp head 17 fixedly connected to a pair of rotating shafts 16, and a second clamp head 18 fixedly connected to a pair of rotating shafts 16.

[0046] The first clamp head 17 includes a first rotating plate 19 fixedly connected to the rotating shaft 16, and a first chuck 20 fixedly connected to the end of the pair of first rotating plates 19 away from the rotating shaft 16.

[0047] The second clamp 18 includes a second rotating plate 21 fixedly connected to the rotating shaft 16, and a pair of second rotating plates 21 are located between a pair of first rotating plates 19. A second clamp 22 is fixedly connected to the end of the second rotating plate 21 away from the rotating shaft 16.

[0048] The first rotating plate 19 has a first arc-shaped groove 23, the second rotating plate 21 has a second arc-shaped groove 24, and a pair of extrusion blocks 25 are fixedly connected to the liquid outlet pipe 11. The pair of extrusion blocks 25 are arranged opposite to each other and are slidably connected in the first arc-shaped groove 23 and the second arc-shaped groove 24.

[0049] Specifically, by ensuring that the rotating shaft 16 rotates smoothly within the rotating hole of the fixed baffle 14, the first rotating plate 19 of the first clamp head 17 and the second rotating plate 21 of the second clamp head 18 are firmly fixed to the rotating shaft 16, and the pair of squeezing blocks 25 on the liquid outlet tube 11 are accurately embedded in the first arc-shaped sliding groove 23 and the second arc-shaped sliding groove 24 and slide without jamming; then, holding the handle 1, the liquid outlet tube 11 is initially moved by the pull rod assembly, and with the cooperation of the squeezing blocks and the arc-shaped sliding grooves, the first clamp head 20 and the second clamp head 22 are in a closed state, and the clamp assembly and the fixed head end are slowly extended into the target sampling site until the preset sampling position is reached; after reaching the sampling position, the liquid outlet tube 11 is driven to slide in a preset direction by the pull rod assembly, and the squeezing blocks 25 on the liquid outlet tube 11 are simultaneously in the first arc-shaped sliding groove 23 of the first rotating plate 19 and the second arc-shaped sliding groove 24 of the second rotating plate 21. The inner arc-shaped sliding mechanism, guided by the squeezing block 25 and the arc-shaped groove, transforms the sliding motion into a lateral driving force on the first rotating plate 19 and the second rotating plate 21, causing them to rotate in opposite directions around the rotation axis 16. This, in turn, drives the first clamp 20 and the second clamp 22 to open synchronously. The pull rod assembly drives the liquid outlet pipe 11 to slide in the opposite direction, and the squeezing block 25 slides in the arc-shaped groove, generating a reverse driving force on the first rotating plate 19 and the second rotating plate 21, causing them to rotate in opposite directions around the rotation axis 16. Since the second rotating plate 21 is located between a pair of first rotating plates 19, there is no interference between them during rotation, ultimately driving the first clamp 20 and the second clamp 22 to close smoothly and accurately grasp the target living tissue. During this process, the trajectory of the arc-shaped groove limits the sliding range of the squeezing block 25, indirectly controlling the opening and closing angle of the clamp head and avoiding over-gripping.

[0050] The working principle of this embodiment is as follows:

[0051] In the initial state, the pull rod assembly, in conjunction with the spring 29, controls the forward or backward sliding of the outlet tube 11, controlling the opening and closing of a pair of clamps. This allows the clamp assembly to precisely grasp the target tissue sample. When the pair of clamps close, the one-way valve assembly closes again as the outlet tube 11 slides, preventing continuous outflow of the flushing medium or backflow of tissue fluid. Finally, while keeping the clamp assembly closed, the sampling forceps are slowly withdrawn from the sampling site. The pull rod assembly is released to close the clamp assembly, and the collected live sample is removed. Then, the live sample sampling forceps is inserted back into the sampling position for flushing, with the clamp assembly in the closed state. First, the operator connects... The nozzle 9 is adjusted to a suitable position along the sliding groove 8, and the syringe containing physiological saline is sealed and connected to the nozzle 9 to ensure that the infusion tube 10 is not twisted in the circular groove 2 and the outer tube 4. Then, by holding the handle 1 and releasing the pull rod assembly in the sliding groove 3, the contraction force of the spring 29 causes the outlet tube 11 to move towards the first clamp 20, driving the outlet tube 11 to slide backward along the circular hole 15 on the circular sleeve 12. The pair of squeezing blocks 25 on the outlet tube 11 slide synchronously in the first arc-shaped sliding groove 23 of the first rotating plate 19 and the second arc-shaped sliding groove 24 of the second rotating plate 21, with the help of the arc shape. The guiding action of the chute generates a lateral driving force on the rotating plate, causing the first rotating plate 19 and the second rotating plate 21 to rotate relative to each other around the rotating shaft 16, thereby driving the first clamp 20 and the second clamp 22 to close. At this time, the closed clamp assembly and the fixing head 6 are slowly extended into the target sampling site. After reaching the sampling position, the flushing medium is precisely sprayed into the sampling area through the connecting nozzle 9, the infusion tube 10, the outlet tube 11, and the outlet hole 35, removing impurities and exposing the sampling target point, thus completing the entire sampling process. By integrating flushing and sampling functions, there is no need to carry additional flushing equipment, simplifying the operation process and improving surgical efficiency. The linkage structure of the sliding groove enables precise coordination between the opening and closing of the clamp head and the flushing action. The layout of the second rotating plate 21 between a pair of first rotating plates 19 avoids component interference and ensures smooth operation. The circular cavity 13 of the circular sleeve 12 provides space for the transmission components of the pull rod assembly, and the circular hole 15 guides the liquid outlet tube 11, improving the stability and accuracy of the actions of each component. The sliding design of the connecting nozzle 9 is adaptable to different specifications of flushing media devices, with strong adaptability. At the same time, the one-way valve assembly effectively prevents cross-contamination. The precise opening and closing control of the clamp assembly avoids tissue damage and ensures sample integrity and patient safety.

[0052] Example 2

[0053] Compared with the first comparative example, another implementation manner of the present application is as follows: The tie rod assembly includes a sliding ring 26 slidably connected in the sliding through groove 3. One side of the sliding ring 26 is fixedly connected with a steel wire 27, and the steel wire 27 is located inside the circular through groove 2 and the outer tube 4. The end of the steel wire 27 away from the sliding ring 26 is fixedly connected with a circular block 28. The circular block 28 is fixedly connected to one end of the liquid outlet pipe 11. The circular block 28 is slidably connected in the circular cavity 13. The circular block 28 is connected to the wall of the circular cavity 13 through a spring 29. The infusion tube 10 passes through the circular block 28.

[0054] Specifically, the sliding ring 26 is adaptively installed in the sliding through groove 3 of the handle 1. One end of the steel wire 27 is fixedly connected with the sliding ring 26, and the other end passes through the circular through groove 2 of the handle 1 and the outer tube 4 and is fixedly connected with the circular block 28, forming a complete transmission link. When it is necessary to control the clamp to close for sampling, the operator holds the handle 1 and pushes or pulls the sliding ring 26 in the sliding through groove 3 in the direction close to the fixed ring 5. The sliding ring 26 drives the steel wire 27 to move linearly along the axial direction of the circular through groove 2 and the outer tube 4. The steel wire 27 transmits the power to the subsequent linkage components through the circular block 28 at the end, and then drives the jaws of the clamp assembly to open to clamp the sample. When it is necessary to loosen the clamp, the sliding ring 26 is pulled back by the spring 29, and the steel wire 27 drives in the reverse direction to带动后续部件复位,使钳头闭合。

[0055] Please refer specifically to Figure 7 , Figure 8 , Figure 9 , the one-way valve assembly includes a fixed tube 30 fixedly connected to the inner wall of the end of the liquid outlet pipe 11 away from the circular block 28. An inclined surface 31 is provided on the inner wall of the fixed tube 30. A pair of support pieces 32 are fixedly connected to the side wall of the circular sleeve 12. A pair of liquid outlet holes 35 are provided on both the first chuck 20 and the second chuck 22.

[0056] A circular rod 33 is fixedly connected between the pair of support pieces by a fixing frame. The fixing frame is in a "U" shape. The end of the circular rod 33 located inside the fixed tube 30 is fixedly connected with a plastic block 37, and the plastic block 37 is slidably connected in the liquid outlet pipe 11. A conical block 34 is fixedly connected to the side wall of the plastic block 37. The surface of the conical block 34 is in contact with the inclined surface 31. A group of hoses 36 are fixedly connected to the conical block 34. The group of hoses 36 are respectively fixedly connected to the inner walls of the first chuck 20 and the second chuck 22, and the hoses 36 are connected to the liquid outlet holes 35.

[0057] It should be noted that there is an incomplete sentence in the translation of . Please check and correct it according to the original intention.Specifically, the fixed tube 30 is securely fixed to the inner wall of the end of the outlet tube 11 away from the circular block 28. The inclined surface 31 of the inner wall of the fixed tube 30 is tightly fitted with the conical block 34 at the end of the circular rod 33, forming a sealed state. The circular rod 33 is fixedly connected to a pair of support plates 32 on the side wall of the circular sleeve 12 through the fixed block, forming a stable static support structure. When the operator pulls the sliding ring 26, the pair of clamps are closed, and the conical block 34 separates from the inclined surface 31 of the fixed tube 30, thereby forming a liquid flow channel. The flushing fluid can be smoothly delivered to the first clamp 30 and the second clamp 22 through the hose 36. A set of outlet holes 36 on the upper part flow out, and the plastic block 37 does not detach from the outlet pipe 11 to prevent leakage; when the flushing fluid delivery stops or the outlet pipe 11 is driven to reset in the reverse direction by the spring 29, the conical block 34, under the limiting action of its own fixed support structure, re-fits tightly with the inclined surface 31 of the fixed pipe 30 through the moving outlet pipe 11, and the flow channel is closed, thereby preventing the reverse flow of liquid. The surface contact sealing structure of the conical block 34 and the inclined surface 31 seals the hole of the connecting hose 36 on the fixed pipe 30, and the tight fit can effectively block the backflow of tissue fluid, blood and other fluids into the outlet pipe 11.

[0058] The working principle of this embodiment is as follows:

[0059] In its initial state, the sliding ring 26 of the pull rod assembly is fitted into the sliding groove 3 of the handle 1. One end of the steel wire 27 is fixed to the sliding ring 26, and the other end passes through the circular groove 2 and outer tube 4 of the handle 1 and is firmly connected to the circular block 28, forming a complete manual transmission link. The fixed tube 30 is fixed to the inner wall of the end of the outlet tube 11 away from the circular block 28. The inclined surface 31 of its inner wall is tightly fitted with the tapered block 34 at the end of the circular rod 33 to achieve initial sealing. The circular rod 33 is fixed to a pair of support plates 32 on the side wall of the circular sleeve 12 through the fixed block, forming a stable static support structure. When it is necessary to control the action of the clamp assembly, the operator holds the handle 1 and pushes or pulls the sliding ring 26 in the sliding groove 3 towards or away from the fixed ring 5. The sliding ring 26 drives the steel wire 27 to move linearly along the axial direction of the circular groove 2 and the outer tube 4. The steel wire 27 transmits power to the outlet tube 11 through the circular block 28 at its end, driving the outlet tube 11 along the axial direction of the circular groove 2 and the outer tube 4. The circular hole 15 on the circular sleeve 12 slides axially. When the outlet tube 11 slides away from the support plate 32, it drives the fixed tube 30 fixed thereon to move synchronously, causing the inclined surface 31 that was originally in contact with the conical block 34 to separate. The one-way valve channel opens, and the flushing fluid can be smoothly delivered through the hose 36 to a set of outlet holes 36 on the first clamp 30 and the second clamp 22 to flow out. The plastic block 37 does not detach from the outlet tube 11 to prevent leakage. When the pair of clamps open under the action of the reverse pushing sliding ring 26, the fixed tube 30 moves with the outlet tube 11 towards the support plate 32. Under the limiting action of its own fixed support structure, the conical block 34 re-fits tightly with the inclined surface 31 of the fixed tube 30 through the moving outlet tube 11. The one-way valve channel closes to prevent the liquid from flowing back. This achieves the function of immediate flushing after sampling and prevents body fluid from flowing into the infusion channel when the pair of clamps are open for sampling.

[0060] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A live sampling forceps with a rinsing function, comprising a handle (1), characterized in that, The handle (1) has a circular through groove (2) and a sliding through groove (3). An outer tube (4) is fixedly connected to the front end of the handle (1), and a fixing ring (5) is fixedly connected to the other end of the handle (1). A fixing head (6) is fixedly connected to the end of the outer tube (4) away from the handle (1). The circular through groove (2) is connected to the outer tube (4). A sampling mechanism is provided on the handle (1). The sampling mechanism includes: The water injection assembly includes a rectangular through groove (7) on the handle (1), and sliding grooves (8) on opposite side walls of the rectangular through groove (7). A connecting nozzle (9) is slidably connected in a pair of sliding grooves (8). An infusion tube (10) is fixedly connected to the bottom of the connecting nozzle (9), and the infusion tube (10) is located in the circular through groove (2) and the outer tube (4). An outlet tube (11) is slidably connected on the fixed head (6), and the end of the infusion tube (10) away from the connecting nozzle (9) is fixedly connected in the outlet tube (11). The clamp assembly is mounted on the fixed head (6) for gripping live samples; A lever assembly is provided on the handle (1) for controlling the clamp assembly; A one-way valve assembly is installed in the outlet pipe (11) for one-way liquid discharge.

2. The live sampling forceps with rinsing function according to claim 1, characterized in that, The fixing head (6) includes a circular sleeve (12) fixedly attached to the end of the outer tube (4) away from the handle (1). A circular cavity (13) is opened on the side of the circular sleeve (12) close to the outer tube (4). A pair of fixed baffles (14) are fixedly attached to the side of the circular sleeve (12) away from the outer tube (4). A circular hole (15) is opened on the side of the circular sleeve (12) away from the outer tube (4). The liquid outlet tube (11) is slidably connected in the circular hole (15).

3. A live sampling forceps with a rinsing function according to claim 2, characterized in that, The clamp assembly includes a rotating shaft (16) rotatably connected to the side wall of the fixed baffle (14) through a rotating hole, a first clamp head (17) fixedly connected to a pair of rotating shafts (16), and a second clamp head (18) fixedly connected to a pair of rotating shafts (16).

4. A live sampling forceps with a rinsing function according to claim 3, characterized in that, The first clamp (17) includes a first rotating plate (19) fixedly connected to the rotating shaft (16), and a first chuck (20) is fixedly connected to the end of the first rotating plate (19) away from the rotating shaft (16).

5. A live sampling forceps with a rinsing function according to claim 4, characterized in that, The second clamp (18) includes a second rotating plate (21) fixedly attached to the rotating shaft (16), and a pair of second rotating plates (21) are located between a pair of first rotating plates (19). A second chuck (22) is fixedly attached to the end of the second rotating plate (21) away from the rotating shaft (16).

6. A live sampling forceps with a rinsing function according to claim 5, characterized in that, The first rotating plate (19) is provided with a first arc-shaped groove (23), the second rotating plate (21) is provided with a second arc-shaped groove (24), a pair of extrusion blocks (25) are fixedly connected to the liquid outlet pipe (11), and the pair of extrusion blocks (25) are arranged opposite to each other. The extrusion blocks (25) are slidably connected in the first arc-shaped groove (23) and the second arc-shaped groove (24).

7. A live sampling forceps with a rinsing function according to claim 1, characterized in that, The pull rod assembly includes a sliding ring (26) slidably connected in a sliding groove (3). A steel wire (27) is fixedly connected to one side of the sliding ring (26), and the steel wire (27) is located in the circular groove (2) and the outer tube (4). A circular block (28) is fixedly connected to one end of the steel wire (27) away from the sliding ring (26).

8. A live sampling forceps with a rinsing function according to claim 7, characterized in that, The circular block (28) is fixed to one end of the outlet tube (11), the circular block (28) is slidably connected in the circular cavity (13), the circular block (28) is connected to the cavity wall of the circular cavity (13) by a spring (29), and the infusion tube (10) passes through the circular block (28).

9. A live sampling forceps with a rinsing function according to claim 5, characterized in that, The one-way valve assembly includes a fixed tube (30) fixed to the inner wall of the end of the outlet pipe (11) away from the circular block (28), an inclined surface (31) is provided on the inner wall of the fixed tube (30), a pair of support plates (32) are fixed to the side wall of the circular sleeve (12), and a pair of outlet holes (35) are provided on the first clamp (20) and the second clamp (22).

10. A live sampling forceps with a rinsing function according to claim 9, characterized in that, A circular rod (33) is fixedly connected between a pair of support plates (32) by a fixing frame. A plastic block (37) is fixedly connected to one end of the circular rod (33) inside the fixing tube (30), and the plastic block (37) is slidably connected inside the liquid outlet tube (11). A conical block (34) is fixedly connected to the side wall of the plastic block (37). The surface of the conical block (34) is in contact with the inclined surface (31). A set of hoses (36) is fixedly connected to the conical block (34). The set of hoses (36) is fixedly connected to the inner walls of the first clamp (20) and the second clamp (22), respectively, and the hoses (36) are connected to the liquid outlet (35).

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