Biopsy forceps with measuring function

Abstract

The invention discloses biopsy forceps with a measuring function in the technical field of medical instruments, and the biopsy forceps comprise a probing tube, a sampling assembly and an observation assembly, a first passage tube and a second passage tube are arranged in the probing tube, the probing tube comprises a fixed end, a tube body and an active end, and the top end of the fixed end is communicated with a steering assembly; a sampling assembly is sleeved with the first passage pipe and comprises a sampling pipe, the sampling pipe is attached to the bottom end of the first passage pipe and fixedly communicated with a fixed table, connecting blocks are symmetrically arranged on the side wall of the fixed table, and a plurality of sliding ways are fixedly communicated with the inner side wall of the fixed table; one ends of the connecting blocks are fixedly connected with first springs and driving assemblies, the ends, away from the fixing table, of the connecting blocks are fixedly connected with pincer pieces, and the surfaces of the sides, close to the connecting blocks, of the pincer pieces are provided with scales. The sampling forceps are simple and easy to operate, and the effect that the occupied area of lesion tissue can be directly measured without rotating the sampling forceps during sampling is achieved through the scales arranged on the forceps sheets.

Description

Technical Field

[0001] The invention belongs to the technical field of medical instruments, in particular to a living body sampling forceps with a measuring function. Background Art

[0002] Biopsy forceps is a medical device that is mainly used to remove human tissue samples for testing when doctors are performing clinical operations. It is generally used for endoscopic sampling. Endoscopic sampling usually refers to the process of examining and collecting samples of gastrointestinal lesion tissue through a gastrointestinal endoscope, also known as a gastrointestinal endoscopic biopsy.

[0003] In order to measure the occupied area of ​​the patient's diseased part, a measuring component on a live sampling forceps is designed to measure the diseased part. The existing live sampling forceps with measuring function are engraved with scales at the connection between the clamp head and the clamp body. When in use, the clamp body of the sampling forceps is rotated to make the scale plane parallel to the diseased tissue for measurement. Since this measurement method requires the operation of horizontally placing the sampling forceps, the sampling forceps will move perpendicular to the gastrointestinal lesion at the patient's gastrointestinal lesion, which increases the probability of injuring the inner wall of the patient's lesion on the one hand, and when the sampling forceps are turned back after measurement, the operation steps increase, reducing the sampling efficiency. For this reason, it is necessary to propose a live sampling forceps with measuring function. During the measurement process, the measurement can be achieved without rotating the sampling forceps as a whole, so as to improve the safety of the measurement of the occupied space of the diseased tissue while improving the sampling efficiency. Summary of the invention

[0004] In order to solve the above problems, the purpose of the present invention is to provide a living body sampling forceps with a measuring function, which can directly measure the area occupied by the diseased tissue during sampling through the scales set on the forceps.

[0005] In order to achieve the above-mentioned purpose, the technical scheme of the present invention is as follows: a living body sampling forceps with a measuring function, comprising an insertion tube, a sampling assembly and an observation assembly for observing the gastrointestinal tract, wherein a first passage tube for placing the sampling assembly and a second passage tube for placing the observation assembly are arranged in the insertion tube, the insertion tube comprises a fixed end, a tube body and an active end, the top end of the fixed end is connected with a steering assembly for controlling the active end, the tube body is sleeved with a limit assembly for fixing the opening of the oral cavity, the bottom end of the fixed end is fixedly connected with the tube body, and one end of the tube body away from the fixed end is fixedly connected with the active end;

[0006] The sampling assembly includes a sampling tube, which is attached to the bottom end of the first aisle tube and fixedly connected to a hollow fixed platform. The side walls of the fixed platform are symmetrically provided with connecting blocks with an annular structure. The connecting blocks penetrate the side walls of the fixed platform and extend into the fixed platform. The inner wall of the fixed platform is fixedly connected with a plurality of slideways, and the plurality of connecting blocks are respectively slidably matched with the corresponding slideways. One end of the connecting block located in the fixed platform is fixedly connected with a first spring and a driving assembly for driving the spring to compress. The other end of the first spring is fixedly connected to the inner bottom wall of the fixed platform. The end of the connecting block away from the fixed platform is fixedly connected with a serrated clamp. The clamps are all shell-shaped structures with their openings facing away from the connecting block, and scales are provided on the surface of the clamp close to the connecting block.

[0007] The principle of the basic scheme is: to achieve the effect of multi-directional observation and sampling through the cooperation of the active end and the steering component, to achieve the effect of sampling living tissue through a number of forceps, to drive the forceps through the cooperation of the connecting block and the first spring, to achieve displacement control of the connecting block through the driving component, to achieve extension and retraction of the forceps through the sampling tube, and to achieve observation of the patient's gastrointestinal tract through the observation component.

[0008] The beneficial effects of the basic scheme are: 1. Since several forceps are in a horizontally collinear state during sampling, by setting scales on the surface of the forceps, the occupancy of the diseased tissue can be intuitively measured through the scales, so that sampling and measurement can be carried out simultaneously, improving the practicality of the device.

[0009] 2. Because the sampling tube and several clamps are located in the first channel tube when searching for the location of the diseased tissue, the clamps will not be exposed when penetrating deep into the gastrointestinal tract and rotating for alignment, thus reducing accidental damage to the gastrointestinal tract and improving the safety of the device. In addition, after aligning the diseased tissue, only the clamps need to be unfolded to complete the measurement, thus reducing the movement of the measurement and further reducing the probability of gastrointestinal tract damage.

[0010] 3. The tension for unfolding the forceps is stored by the first spring, and then after the measurement is completed, the tension is removed and the stored tension is released by the first spring to complete the closed sampling of several forceps. On the one hand, the sampling process is simplified and the energy consumption is reduced. On the other hand, the sampling operation can be completed quickly. Rapid sampling can reduce the damage to the patient's gastrointestinal tract caused by sampling.

[0011] Furthermore, a transparent elastic layer is fixedly connected to the surface of the forceps blade with scales.

[0012] The beneficial effect of the basic scheme is: since there is gastric juice on the inner wall of the patient's stomach, when the gastric juice adheres to the surface of the clamp, it will increase the difficulty of measurement. By setting a transparent elastic layer, the gastric juice can slide down the surface of the clamp, reducing the problem of the measurement line of sight being blocked by the gastric juice and improving the measurement efficiency.

[0013] Furthermore, a blocking cover is fixedly connected to one end of the active end away from the tube body, and the blocking cover is provided with passage holes respectively used to correspond to and connect the first passage tube and the second passage tube.

[0014] The beneficial effects of the basic scheme are: because the gastric juice in the gastrointestinal tract is corrosive to a certain extent, and the liquid will affect the operation of electronic instruments, the probability of gastric juice entering the probe tube is reduced by setting a baffle, thereby improving the safety of the normal operation of the observation component and the sampling component and improving the practicality of the device.

[0015] Furthermore, a push plate with an "L"-shaped structure is symmetrically provided at one end of the sampling tube close to the fixed end, and one end of the push plate is fixedly connected to the tube opening of the sampling tube.

[0016] The beneficial effect of the basic scheme is: because gastric juice can corrode the forceps and the forceps can cause damage to the gastrointestinal tract, in the process of searching for diseased tissue, the sampling tube and several forceps are retracted into the first channel tube, and the sampling tube is pushed out by pushing the push plate when sampling and measurement operations are required, thereby realizing the versatility of the sampling forceps and improving the protection of the patient's gastrointestinal tract and the protection of the sampling components.

[0017] Furthermore, a plurality of elastic cover plates are fixedly connected to the aisle hole connected to the first aisle tube, and a plurality of clamping blocks are fixedly connected to the inner wall of the first aisle tube near the cover plate. The shapes of the clamping blocks all fit the outer wall of the fixed platform, and a second spring is fixedly connected to the bottom of the clamping blocks. The other end of the second spring is fixedly connected to the corresponding cover plate.

[0018] The beneficial effects of the basic scheme are: through the provision of the elastic cover plate, the cover plate can be attached to the fixed platform when the forceps are extended, thereby reducing the probability of gastric juice entering the sampling tube during the sampling process and improving the practicality of the device; in addition, the fixing platform is limited by the card block, which on the one hand reduces the impact of the fixed platform going too deep on the sampling operation, and on the other hand, through the cooperation of the card block and the second spring, it is possible to retract the sampling tube and several forceps after the sampling is completed, and then quickly restore the cover plate to the closed state through the release of the second spring, thereby reducing the infiltration of gastric juice, reducing the probability of the sampled living tissue falling back into the patient's gastrointestinal tract, and improving the safety of the device.

[0019] Furthermore, the driving assembly includes a clamp handle, which is located at one end of the sampling tube close to the fixed end. A sleeve with a diameter smaller than the diameter of the sampling tube is fixedly connected to the bottom of the clamp handle. The sleeve slides with the sampling tube. A plurality of elastic ropes are fixedly connected to the bottom of the sleeve. A reversing rod fixedly connected to the sampling tube is provided between adjacent slideways. The other ends of the elastic ropes are all fixedly connected to one end of the connecting block located in the fixed platform by passing around the reversing rod.

[0020] The beneficial effects of the basic scheme are: the doctor can control the sampling operation in vitro through the forceps handle. Since it is necessary to apply a pulling force perpendicular to the connecting block to better control the forceps blade, the effect of the fixed pulley is achieved by setting a reversing rod to finally convert the direction of the pulling force into a pulling force perpendicular to the connecting block, thereby improving the efficiency of pulling the connecting block, reducing the loss of pulling force, and facilitating the completion of measurement and sampling operations.

[0021] Furthermore, the observation assembly includes an observation tube and an endoscope. The endoscope is located in the observation tube. The outer wall of the observation tube is in contact with the inner wall of the second passage tube. One end of the observation tube near the clamp is fixedly connected to a waterproof shell. The camera end of the endoscope is fixedly connected to the waterproof shell.

[0022] The beneficial effect of the basic solution is: by placing the endoscope in the observation tube, the endoscope can follow the forceps to move synchronously in the patient's gastrointestinal tract. Compared with the traditional operation of observing first and then inserting the sampling tube, the synchronous movement and extension can reduce the discomfort caused to the patient by the subsequent insertion of the sampling forceps, and reduce the risk of secondary injury to the patient due to the secondary insertion of the sampling forceps. In addition, the endoscope can directly observe the measurement information of the patient's lesion site through the endoscope display, which facilitates operation and improves the efficiency of obtaining measurement information.

[0023] Furthermore, the limiting component includes an expander, one end of which is fixedly connected to a sliding ring, which is fitted on the outside of the tube body and slides in cooperation with the tube body.

[0024] The beneficial effect of the basic scheme is: the expander is slidably connected to the side wall of the tube body through a sliding ring, so as to adapt to different gastrointestinal tract lengths of different patients and improve the multifunctional applicability of the device.

[0025] Furthermore, a clamping plate is symmetrically provided at one end of the active end close to the clamp piece, and the clamping plate is vertically fixedly connected to the pipe opening of the active end.

[0026] The beneficial effect of the basic solution is: in order to reduce the risk of doctors forgetting the expander in the patient's mouth, the insertion tube and the expander can be integrated by setting a positioning plate. On the one hand, it is convenient to operate and reduce the steps of installation. On the other hand, it can reduce the harm to the patient caused by forgetting the expander.

[0027] Furthermore, the steering assembly includes a load-bearing shell, in which a steering gear is fixedly connected, the steering gear includes a sprocket, a driven rod is fixedly connected to one side of the sprocket, the driven rod passes through one side of the load-bearing shell and is fixedly connected to an operating wheel for adjusting the steering direction, the sprocket is meshed with a chain, both ends of the chain are fixedly connected with traction lines, the outer wall of the active end is sleeved with a plurality of skeleton rings, the side wall of the tube body and the plurality of skeleton rings are symmetrically provided with rope grooves for the traction line to pass through, and a section of the traction line away from the chain passes through the rope groove and is fixedly connected to the plurality of skeleton rings at the bottom of the active end.

[0028] The beneficial effect of the basic scheme is: through the cooperation of the sprocket and the chain, the active end can be swung up and down, and combined with the rotation displacement of the rotating active end, multi-angle observation can basically be achieved, which is beneficial for doctors to observe and find diseased tissues in all directions and reduce the probability of not finding diseased tissues due to blind spots in observation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic isometric view of a living body sampling forceps with a measuring function according to an embodiment of the present invention.

[0030] Figure 2 It is a front cross-sectional view of the active end of the living body sampling forceps with measuring function in an embodiment of the present invention.

[0031] Figure 3 It is an axonometric schematic diagram of the clamp blade in the living body sampling forceps with measurement function in an embodiment of the present invention.

[0032] Figure 4 The invention is a living body sampling forceps with a measuring function. Figure 1 Axonometric perspective enlarged view of point A in the middle.

[0033] Figure 5 It is a front cross-sectional view of the fixed end of the living body sampling forceps with measuring function in an embodiment of the present invention.

[0034] The figure marks in the drawings of the specification include: 1. probe tube; 101. fixed end; 102. tube body; 103. active end; 2. sampling tube; 201. fixed platform; 202. connecting block; 203. slideway; 204. clamp; 205. first spring; 206. scale; 3. baffle; 4. push plate; 501. cover plate; 502. clamp block; 503. second spring; 601. clamp handle; 602. sleeve; 603. elastic rope; 604. reversing rod; 7. observation tube; 701. waterproof shell; 801. expander; 802. sliding ring; 803. clamping plate; 901. load-bearing shell; 902. sprocket; 903. driven rod; 904. operating wheel; 905. chain; 906. traction line; 907. skeleton ring; 908. rope groove. DETAILED DESCRIPTION

[0035] The following is further described in detail through specific implementation methods:

[0036] Embodiment 1:

[0037] Basically as attached Figure 1 , Figure 2 , Figure 3 and Figure 5As shown: A living body sampling forceps with a measuring function, comprising an insertion tube 1, a sampling component and an observation component for observing the gastrointestinal tract, wherein a first passage tube for placing the sampling component and a second passage tube for placing the observation component are arranged in the insertion tube 1, the insertion tube 1 comprises a fixed end 101, a tube body 102 and an active end 103, the top end of the fixed end 101 is connected with a steering component for controlling the active end 103, the tube body 102 is sleeved with a limiter component for fixing the oral cavity opening, the bottom end of the fixed end 101 is fixedly connected with the tube body 102, the end of the tube body 102 away from the fixed end 101 is fixedly connected with the active end 103, and the first One end of the passage tube close to the active end 103 is connected to a sampling forceps assembly, and an observation assembly is arranged in the second passage tube; when performing an endoscopic examination, the doctor first uses the limiting assembly to expand the patient's mouth and maintain the expanded state, and first extends the active end 103 into the patient's mouth. The tube body 102 is long enough to adapt to the gastrointestinal tract of patients with different lengths, and the fixed end 101 is located outside the patient's body for a long time to carry some components that need to be operated by the doctor. When the active end 103 reaches the specified position, the active end 103 can be rotated by controlling the steering assembly to achieve the purpose of the observation assembly directly observing the diseased tissue and the sampling forceps assembly being able to effectively take samples.

[0038] The sampling clamp assembly includes a hollow fixed platform 201, the top of the fixed platform 201 is sleeved in the sampling tube 2, and the side wall of the fixed platform 201 is symmetrically provided with a connecting block 202 of an annular structure, and the connecting block 202 passes through the side wall of the fixed platform 201 and extends into the fixed platform 201. The inner side wall of the fixed platform 201 is fixedly connected with a plurality of slideways 203 corresponding to the movement trajectory of the connecting block 202, and the connecting block 202 is respectively slidably matched with the corresponding slideway 203, and one end of the connecting block 202 located in the fixed platform 201 is melted and fixedly connected with The first spring 205 and a driving assembly for driving the spring to be compressed, the other end of the first spring 205 is welded to the inner bottom wall of the fixed platform 201; under normal conditions, the fixed platform 201 is connected to the sampling tube 2 and is located in the first aisle tube without extending the active end 103. When the doctor adjusts the steering angle, the sampling tube 2 is pushed outward by the driving assembly, and the sampling tube 2 drives the fixed platform 201 to move outward. The outward movement of the fixed platform 201 drives the entire sampling clamp assembly to expose the active end 103, which is convenient for subsequent measurement and sampling of diseased tissue.

[0039] An integrally formed sawtooth-shaped forceps blade 204 is welded to one end of the connecting block 202 away from the fixed platform 201. The forceps blades 204 are all shell-shaped structures with their openings facing away from the connecting block 202. The surfaces of the forceps blades 204 close to the connecting block 202 are engraved with scales 206. When not in use, the first spring 205 is in a natural state, the connecting block 202 is not subjected to force, and the adjacent forceps blades 204 welded to one end of the connecting block 202 are meshed with each other. When the forceps blades 204 need to be used, the doctor operates the driving assembly to drive the connecting block 202 to slide along the direction of the corresponding slideway 203, applies pressure to the first spring 205, compresses the first spring 205, and the sliding of the connecting block 202 drives the forceps blades 204 to swing, and the angle between adjacent forceps blades 204 slowly increases. When the first spring 205 is compressed to the limit state, the adjacent clamp pieces 204 are in a collinear state. At this time, the occupied area of ​​the diseased tissue can be measured through the scale 206 on the surface of the clamp piece 204, which simplifies the operating steps of switching to the sampling forceps for measurement in the conventional method, reduces the displacement required for the sampling forceps, reduces the harm to the patient caused by the displacement, and improves the safety during the sampling operation; the surface of the clamp piece 204 with the scale 206 is fused with a transparent elastic layer; since the patient's stomach inner wall has wrinkles and mucus for digestion, when mucus adheres to the surface of the clamp piece 204, it will increase the difficulty of measurement. By providing a transparent elastic layer, the mucus can slide down the surface of the clamp piece 204, reducing the problem of the measurement line of sight being blocked by the mucus, thereby improving the efficiency of the measurement.

[0040] When sampling operation is needed, the doctor only needs to operate the driving assembly to remove the pulling force on the connecting block 202, and the first spring 205 releases the stored force to displace the connecting block 202 in the opposite direction of the corresponding slideway 203, and the adjacent forceps 204 quickly swing from the parallel collinear state to the meshing state to realize the sampling operation of the diseased tissue. The first spring 205 releases the stored force to realize rapid displacement, thereby improving the sampling efficiency, reducing the problem of harm to the patient caused by the slow sampling process, and improving the safety of the sampling operation.

[0041] Embodiment 2:

[0042] As attached Figure 1 and Figure 2As shown, the difference from the above embodiment is that a blocking cover 3 is welded to the end of the active end 103 away from the tube body 102, and passage holes for correspondingly connecting the first passage tube and the second passage tube are opened on the blocking cover 3; when the active end 103 enters the patient's gastrointestinal tract, due to the presence of mucus in the gastrointestinal tract, the mucus enters the first passage tube and reduces the displacement space of the sampling tube 2, affecting the extension and contraction of the sampling tube 2. By setting the blocking cover 3, the mucus is blocked outside the device, and the problem of the displacement of the sampling tube 2 being blocked due to the entry of liquid is reduced. In addition, since the observation component is an electronic instrument that needs to be electrically connected to display the image in the gastrointestinal tract, the problem of failure of the observation component due to the entry of liquid into the observation component is reduced, thereby improving the practicality of the device.

[0043] Embodiment 3:

[0044] As attached Figure 2 and Figure 5 As shown, the difference from the above embodiment is that a pushing plate 4 with an "L"-shaped structure is symmetrically provided at one end of the sampling tube 2 near the clamp handle 601, and one end of the pushing plate 4 is melted and fixedly connected to the tube mouth of the sampling tube 2; in order to extend the service life of the sampling forceps and reduce the corrosion of the sampling forceps by gastric juice, during the movement of the active end 103, a plurality of clamp blades 204 are located in the sampling tube 2 to reduce the direct contact between the clamp blades 204 and the gastric juice. When measurement and sampling operations are required, the doctor pushes the sampling tube 2 to move away from the active end 103 by pressing to expose the clamp blades 204. Through the setting of the pushing plate 4, on the one hand, the doctor can observe the position of the pushing plate 4 to reduce the inertial force generated during the movement that causes the clamp blades 204 to be exposed in advance and scratch the patient's gastrointestinal tract; on the other hand, it can reduce the force required for pushing out, which is convenient for the doctor to push out the sampling tube 2.

[0045] A plurality of elastic cover plates 501 are melted and fixedly connected to the passage hole connected to the first passage tube; the plurality of cover plates 501 can prevent gastric fluid from entering the sampling tube 2 and corroding the clamp piece 204 during movement, thereby increasing the service life of the clamp piece 204.

[0046] The inner wall of the first passage tube is melted and fixedly connected with a plurality of blocks 502 near the cover plate 501. The shapes of the blocks 502 are all fitted to the outer wall of the fixed platform 201. The bottom of the blocks 502 is fixedly connected with a second spring 503. The other end of the second spring 503 is welded to the corresponding cover plate 501. During the sampling process, the displacement of the sampling tube 2 will drive the fixed platform 201 to move. After the fixed platform 201 moves to a certain distance, it will be blocked by the blocks 502. The bottom end of the fixed platform 201, the plurality of clamps 204 and the connecting block 202 will pass through and exert pressure on the plurality of cover plates 501 to open the cover plates 501. At this time, the blocks 502 will not be displaced due to being welded in the first passage tube. The displacement of the cover plate 501 will cause the corresponding second spring 503 to receive the tensile force and deform to store the tensile force. After completing the measurement and sampling operations, it is necessary to pull the push plate 4 to engage and retract the several forceps 204 that have been collected back into the collection tube. At this time, the second spring 503 will release the stored tensile force, and generate a tensile force toward the sampling tube 2 on the corresponding cover plate 501, pulling the several cover plates 501 back to the initial position. On the one hand, it can reduce the falling out of the sampled diseased living tissue during the removal operation after the sampling is completed, and reduce the secondary contamination damage to the patient's gastrointestinal tract due to the falling out of the diseased tissue. On the other hand, it can restore the function of blocking gastric juice of the cover plate 501, thereby improving the protection of the forceps 204 during the removal operation.

[0047] Embodiment 4:

[0048] As attached Figure 1 and Figure 5 As shown, the difference from the above embodiment is that the driving assembly includes a clamp handle 601, the clamp handle 601 is located at one end of the sampling tube 2 close to the fixed end 101, a sleeve 602 with a diameter smaller than the diameter of the sampling tube 2 is welded at the bottom of the clamp handle 601, the sleeve 602 is slidably matched with the sampling tube 2, a plurality of elastic ropes 603 are fixedly connected to the bottom of the sleeve 602 by bolts, a reversing rod 604 fused to the sampling tube 2 is provided between adjacent slideways 203, and the other end of the elastic rope 603 is bypassed by the reversing rod 604 and connected to a portion of the connecting block 202 located in the fixed platform 201. The two ends are fixedly connected by bolts; when the doctor operates the driving assembly to generate tension on the connecting block 202, the clamp handle 601 is pulled, and the clamp handle 601 is displaced in the direction away from the sampling tube 2. The plurality of elastic ropes 603 are subjected to and transmit the tension generated by the displacement of the clamp handle 601. The elastic ropes 603 change the direction of the tension through the reversing rod 604, so that the direction of the tension is perpendicular to the connecting surface between the connecting block 202 and the elastic ropes 603, thereby improving the efficiency of the tension of the clamp handle 601, reducing the loss of tension due to direction conversion, and making the measurement and sampling operations more convenient and rapid.

[0049] Embodiment 5:

[0050] As attached Figure 2As shown, the difference from the above embodiment is that the observation assembly includes an observation tube 7 and an endoscope, the endoscope is located in the observation tube 7, the outer wall of the observation tube 7 is in contact with the inner wall of the second passage tube, the end of the observation tube 7 close to the forceps 204 is welded to a waterproof housing 701, and the camera end of the endoscope is welded in the waterproof housing 701; in the process of the active end 103 entering the gastrointestinal tract from the patient's mouth through the throat and esophagus, image information is collected through the camera end of the endoscope, and the medical staff improves the safety of the active end 103 entering the gastrointestinal tract smoothly according to the display of the display end of the endoscope, and by synchronizing the insertion displacement of the forceps 204, the discomfort caused to the patient by the subsequent insertion of the forceps 204 can be reduced, and the risk of causing damage to the patient's gastrointestinal wall is reduced.

[0051] Embodiment 6:

[0052] As attached Figure 1 , Figure 2 and Figure 4 As shown, the difference from the above embodiment is that the limiting component includes a mouth expander 801, a sliding ring 802 is welded at one end of the mouth expander 801, the sliding ring 802 is fitted and sleeved on the outside of the tube body 102, and the sliding ring 802 slides with the tube body 102; the mouth expander 801 keeps the patient's mouth open, reducing the probability of the patient closing his mouth to hinder the insertion of the active end 103 and swallowing the tongue, and the mouth expander 801 can slide on the tube body 102 through the sliding ring 802, so as to achieve the effect of adapting to different lengths of the gastrointestinal tract of different patients, and at the same time realize the sampling and measurement operations of different lesion locations of the same patient.

[0053] A retaining plate 803 is symmetrically provided at one end of the active end 103 near the forceps 204, and the retaining plate 803 is vertically melt-welded to the tube mouth of the active end 103; when the active end 103 is taken out after the endoscopy is completed, when the active end 103 is about to be completely taken out, the retaining plate 803 will contact the sliding ring 802, so as to achieve the effect of synchronously taking out the active end 103 and the expander 801, thereby reducing the damage to the patient's oral cavity caused by the doctor forgetting to take out the expander 801. In addition, the expansion device 801 is integrated with the insertion tube 1, which facilitates the preparation operation and the removal operation at the end of the gastrointestinal endoscopy operation, and improves the practicability of the device.

[0054] Embodiment 7:

[0055] As attached Figure 2 and Figure 5As shown, the difference from the above embodiment is that the steering assembly includes a bearing shell 901, a steering gear is welded inside the bearing shell 901, the steering gear includes a sprocket 902, a driven rod 903 is welded on one side of the sprocket 902, the driven rod 903 penetrates through the bearing shell 901 and is welded with an operating wheel 904 for adjusting the steering direction, the sprocket 902 is meshed with a chain 905, both ends of the chain 905 are fixedly linked with a traction line 906, the outer wall of the active end 103 is sleeved with a plurality of skeleton rings 907, the side wall of the tube body 102 and the plurality of skeleton rings 907 are symmetrically provided with rope grooves 908 for the traction line 906 to pass through, and the traction line 906 is fixedly connected to the bottom of the active end 103 by bolts through the rope groove 908 and the plurality of skeleton rings 907; since the human gastrointestinal tract presents a circular cavity, and the lesion site is not necessarily located at the bottom of the stomach inner wall, the active end 103 that can realize multi-directional rotation is convenient for lesions at different positions of the patient. The doctor uses the image output by the display end of the endoscope to operate the rotation of the operating wheel 904 to adjust the direction. After finding the location of the target diseased tissue, the doctor rotates the operating wheel 904 for fine adjustment. The rotation of the operating wheel 904 will drive the sprocket 902 to rotate in the same direction through the driven rod 903, and the sprocket 902 will drive the meshing chain 905 to move in one direction. The displacement of the chain 905 realizes the tightening and relaxation of the traction lines 906 at both ends. The tightening and relaxation of the traction lines 906 can respectively make the skeleton ring 907 of the side wall of the active end 103 close and separate at the upper and lower ends, thereby realizing the tilting, lifting and lowering of the active end 103, thereby realizing the purpose of vertical swing, and the horizontal rotation can be achieved by rotating the active end 103. The vertical swing is combined with the horizontal rotation to realize the multi-directional displacement of the active end 103, which is beneficial for the doctor to check the diseased tissue of the gastrointestinal tract, and is also beneficial for the doctor to align the diseased tissue during sampling and measurement.

[0056] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0057] The above is only an embodiment of the present invention. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A biopsy forceps with measuring function, characterized in that: The invention comprises an insertion tube (1), a sampling assembly and an observation assembly for observing the gastrointestinal tract. The insertion tube (1) is provided with a first passage tube for placing the sampling assembly and a second passage tube for placing the observation assembly. The insertion tube (1) comprises a fixed end (101), a tube body (102) and an active end (103). The top end of the fixed end (101) is connected to a steering assembly for controlling the active end (103). The tube body (102) is sleeved with a limit assembly for fixing the oral cavity to be opened. The bottom end of the fixed end (101) is fixedly connected to the tube body (102). The end of the tube body (102) away from the fixed end (101) is fixedly connected to the active end (103). The sampling assembly comprises a sampling tube (2), the sampling tube (2) is fixedly connected to a hollow fixed platform (201) at the bottom end of a first passage tube, a connecting block (202) of an annular structure is symmetrically arranged on the side wall of the fixed platform (201), the connecting block (202) penetrates the side wall of the fixed platform (201) and extends into the fixed platform (201), a plurality of slideways (203) are fixedly connected to the inner side wall of the fixed platform (201), a plurality of connecting blocks (202) are respectively slidably matched with corresponding slideways (203), and the connecting blocks (202) are located in the fixed platform. One end of the fixed platform (201) is fixedly connected to a first spring (205) and a driving assembly for driving the spring to compress; the other end of the first spring (205) is fixedly connected to the inner bottom wall of the fixed platform (201); one end of the connecting block (202) away from the fixed platform (201) is fixedly connected to a sawtooth-shaped clamp (204); the clamp (204) is a shell-shaped structure with an opening facing away from the connecting block (202); and a scale (206) is provided on the surface of the clamp (204) on one side close to the connecting block (202).

2. The biopsy forceps with measuring function according to claim 1, characterized in that: A transparent elastic layer is fixedly connected to the surface of the clamp blade (204) with the scale (206).

3. The biopsy forceps with measuring function according to claim 2, characterized in that: The active end (103) is fixedly connected to one end of the tube body (102), and the blocking cover (3) is provided with passage holes respectively used for correspondingly connecting the first passage pipe and the second passage pipe.

4. The biopsy forceps with measuring function according to claim 3, characterized in that: An "L"-shaped pushing plate (4) is symmetrically provided at one end of the sampling tube (2) close to the fixed end (101), and one end of the pushing plate (4) is fixedly connected to the tube mouth of the sampling tube (2).

5. The biopsy forceps with measuring function according to claim 4, characterized in that: A plurality of elastic cover plates (501) are fixedly connected to the passage hole connected to the first passage pipe, and a plurality of clamping blocks (502) are fixedly connected to the inner wall of the first passage pipe near the cover plate (501). The shapes of the clamping blocks (502) are all fitted to the outer wall of the fixed platform (201), and the bottoms of the clamping blocks (502) are fixedly connected to second springs (503), and the other ends of the second springs (503) are fixedly connected to the corresponding cover plates (501).

6. The biopsy forceps with measuring function according to claim 5, characterized in that: The driving assembly comprises a clamp handle (601), the clamp handle (601) is located at one end of the sampling tube (2) close to the fixed end (101), a sleeve (602) having a diameter smaller than the diameter of the sampling tube (2) is fixedly connected to the bottom of the clamp handle (601), the sleeve (602) and the sampling tube (2) are slidably matched, a plurality of elastic ropes (603) are fixedly connected to the bottom of the sleeve (602), a reversing rod (604) fixedly connected to the sampling tube (2) is provided between adjacent slideways (203), and the other ends of the elastic ropes (603) are all wound around the reversing rod (604) and fixedly connected to one end of the connecting block (202) located in the fixed platform (201).

7. The biopsy forceps with measuring function according to claim 6, characterized in that: The observation assembly comprises an observation tube (7) and an endoscope, wherein the endoscope is located in the observation tube (7), the outer wall of the sampling tube (2) is in contact with the inner wall of the second passage tube, one end of the observation tube (7) close to the clamp (204) is fixedly connected to a waterproof housing (701), and the camera end of the endoscope is fixedly connected to the waterproof housing (701).

8. The biopsy forceps with measuring function according to claim 7, characterized in that: The limiting assembly comprises an expander (801), one end of which is fixedly connected to a sliding ring (802), the sliding ring (802) being fitted and sleeved on the outside of the tube body (102), and the sliding ring (802) and the tube body (102) being slidably matched.

9. The biopsy forceps with measuring function according to claim 8, characterized in that: A clamping plate (803) is symmetrically provided at one end of the active end (103) close to the clamp piece (204), and the clamping plate (803) is vertically fixedly connected to the pipe mouth of the active end (103).

10. The biopsy forceps with measuring function according to claim 9, characterized in that: The steering assembly comprises a bearing shell (901), a steering gear is fixedly connected inside the bearing shell (901), the steering gear comprises a sprocket (902), a driven rod (903) is fixedly connected to one side of the sprocket (902), an operating wheel (904) for adjusting the steering direction is fixedly connected to the driven rod (903) passing through one side of the bearing shell (901), a chain (905) is meshed with the sprocket (902), both ends of the chain (905) are fixedly connected with a traction line (906), the outer wall of the active end (103) is sleeved with a plurality of skeleton rings (907), the side wall of the tube body (102) and the plurality of skeleton rings (907) are symmetrically provided with rope grooves (908) for the traction line (906) to pass through, and a section of the traction line (906) away from the chain (905) passes through the rope groove (908) and is fixedly connected to the bottom of the active end (103) with the plurality of skeleton rings (907).

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