Gastrointestinal endoscopy specimen collection device

Abstract

The present invention discloses a digestive tract endoscope specimen collection device, comprising a catheter, a collecting tube provided at one end of the catheter, a shearing assembly provided in the collecting tube, the shearing assembly comprising a fixing groove provided on the inner side of one end of the collecting tube, a rotating card provided with an internal meshing gear in the fixing groove, a plurality of fixing columns evenly provided at one end of the collecting tube, a rotating card provided with a gear on the fixing column, a shearing knife connected to the outer side of the gear, the internal meshing gear meshing with all the gears at the same time, the catheter being connected to the internal meshing gear through a control assembly, and a clamping assembly provided in the collecting tube; the shearing assembly provided in the present invention can seal and store the specimen while the device is cutting and collecting the specimen, and the first traction rope is pulled outward, at this time the first traction rope will pull outward the control board connected to its free end, so that the shearing knife will jointly shear the specimen, and when the shearing is completed, the specimen will be directly stored in the collecting tube, and at this time the clamping assembly can be driven to clamp the specimen and take it out.

Description

Technical Field

[0001] The present invention relates to the technical field of specimen collection, and more particularly to a digestive tract endoscope specimen collection device. Background Art

[0002] Gastrointestinal endoscopy refers to a group of devices that directly generate images through the digestive tract or obtain ultrasound or X-ray images of the digestive tract and digestive organs through equipment equipped with ultrasound and X-rays to diagnose and treat digestive system diseases. According to the examination site and function, it is divided into upper gastrointestinal endoscopy, lower gastrointestinal endoscopy, endoscopic retrograde cholangiopancreatography and endoscopic ultrasound.

[0003] Existing digestive tract endoscopy specimen collection devices are difficult to collect polyp specimens in a timely manner after removing polyp specimens inside the digestive tract. Some larger polyp specimens are prone to slipping due to insufficient attraction, which in turn affects the efficiency of digestive tract endoscopy specimen sampling and reduces the effectiveness of the device. Summary of the Invention

[0004] The present invention provides a digestive tract endoscopy specimen collection device to solve the problem in the prior art that the digestive tract endoscopy specimen collection device is difficult to collect polyp specimens in time after removing polyp specimens inside the digestive tract, and some larger polyp specimens are prone to slipping due to insufficient attraction, thereby reducing the effectiveness of the device.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A digestive tract endoscopy specimen collection device includes a catheter, a collection tube is provided at one end of the catheter, a shearing assembly is provided in the collection tube, the shearing assembly includes a fixing groove opened on the inner side of one end of the collection tube, an internal meshing gear is provided for rotation in the fixing groove, a plurality of fixing columns are evenly provided at one end of the collection tube, a spur gear is provided for rotation on the fixing column, a shearing knife is connected to the outside of the spur gear, the internal meshing gear is meshed with all the spur gears at the same time, the catheter is connected to the internal meshing gear through a control assembly, and a clamping assembly is provided in the collection tube.

[0007] Preferably, the control assembly includes a pair of guide plates arranged on the inner wall of the collecting cylinder, a control plate is slidingly provided between the two guide plates, a rotating cylinder is coaxially connected to the inner side of the internal meshing gear, a spiral groove is opened on the side wall of the rotating cylinder, and a sliding button arranged on the outer side of the control plate is slidingly provided in the spiral groove.

[0008] Preferably, a plurality of clamping rings are provided in the conduit, and a first traction rope is clamped in all the clamping rings. A side hole is provided on the side wall of the connecting end of the conduit and the collecting cylinder, and the free end of the first traction rope passes through the side hole and is connected to the control panel.

[0009] Preferably, a pair of guide bars are provided on the side wall of the conduit, and a movable plate is slidingly provided between the two guide bars. A side groove is also provided on the outside of the movable plate. The shape of the side groove is the same as the cross-sectional shape of the clamping ring provided on the inner wall of the conduit. A limiting ring is provided at the connection between the conduit and the collecting tube, and one side of the limiting ring is in contact with one side of the movable plate.

[0010] Preferably, the clamping assembly includes multiple rotating shafts rotatably clamped on the movable plate, and a coil spring is provided at the hinge between the connecting plate and the rotating shaft. The rotating shaft is evenly distributed on the movable plate, and connecting plates and clamps are respectively provided on both sides of the rotating shaft. The winding direction of the coil spring is the same as the turning direction of the clamp close to the axis of the movable plate. The clamp is arc-shaped and is set in an outward convex direction.

[0011] Preferably, the movable plate is provided with a plurality of pairs of directional plates with the same number as the rotating shafts, and the directional plates are each provided with a guide groove, and a guide block is provided for sliding in the guide groove. The two guide blocks are connected by a pressure plate, and the outer side of the connecting plate is in contact with the pressure plate.

[0012] Preferably, a second traction rope is passed through the free end of the catheter, and a plurality of connecting belts are provided at one end of the second traction rope close to the collecting tube, and one end of each connecting belt is connected to the inner side of the clamp. A plurality of slots are provided at one end of the catheter close to the collecting tube, and each of the pressure plates is clamped in one of the slots.

[0013] Preferably, a release cavity is provided at the free end of the catheter, the inner diameter of the release cavity is larger than the inner diameter of the collecting tube, and a guide tube is connected to the outside of the release cavity, the inner diameter of the guide tube is larger than or equal to the inner diameter of the catheter.

[0014] Preferably, a baffle ring is provided on the outside of the guide tube, a protective tube is clamped on the outside of the baffle ring, gauze is provided at the bottom opening of the guide tube, and a sampling window is provided on the side wall of the protective tube.

[0015] Preferably, a connecting hole is provided at one end of the conduit close to the release chamber, an air pump is connected to the outside of the connecting hole through a pipeline, and the outer diameter of the movable plate is equal to the inner diameter of the conduit.

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

[0017] (1) The shearing assembly provided in the present invention can seal and preserve the specimens while the device is cutting and collecting the specimens. When using the device to collect specimens, it is necessary to first use the air pump connected to one end of the catheter through the connecting hole to push the movable plate to one end of the collecting tube, and then move the collecting tube at one end of the catheter to the position of the specimen to be cut. Then the first traction rope can be pulled outward. At this time, the first traction rope will pull the control plate connected to its free end outward. Since the sliding button provided on the outer side of the control plate is slidingly clamped in the spiral groove provided on the side wall of the rotating drum, the control plate will also drive the rotating drum with the spiral groove to rotate synchronously during the sliding process between the two guide plates. Since the rotating drum is coaxially connected to the internal meshing gear, the internal meshing gear will drive all the spur gears to rotate synchronously along the fixed column connected to one end of the collecting tube during the rotation of the rotating drum. The shearing knife connected to the outer side of the spur gear will be retracted synchronously, so that the shearing knife will shear the specimen together. When the shearing is completed, the specimen will be directly stored in the collecting tube. At this time, the clamping assembly can be driven to clamp the specimen and take it out.

[0018] (2) The clamping assembly provided in the present invention can clamp the cut specimen and take it out without using negative pressure suction. When it is necessary to clamp and take out the specimen, the second traction rope passed through the free end of the catheter is pulled. At this time, the multiple connecting belts provided at one end of the second traction rope will synchronously pull the clamp to deflect inward. At this time, the clamp will clamp the specimen. At the same time, the rotating shaft where the clamp is located will drive the coil spring connected to it to contract and deflect the connecting plate provided on the outside of the rotating shaft. Since the outside of the connecting plate is in contact with the pressure plate, when the connecting plate moves, the pressure plate is no longer subjected to the thrust from the connecting plate. At this time, the pressure plate will be separated from the slot where it is located and the movement restriction of the movable plate will be released. At this time, the clamp has completed the clamping of the specimen. At the same time, the pulling force of the second traction rope will drive the movable plate to move along the guide strip on the side wall of the catheter until the specimen moves into the release cavity for specimen collection.

[0019] (3) The release chamber provided in the present invention can help medical staff to collect the collected specimens. When the movable plate and the clamp move to the release chamber, since the inner diameter of the release chamber is larger than the inner diameter of the collection tube, the clamp will be quickly reset under the action of the coil spring, so that the specimen clamped by the clamp is released. At this time, the specimen will fall under the action of gravity, so that the specimen will fall along the outlet tube to the gauze net provided at the opening at the bottom end of the outlet tube. Then the medical staff can take out the specimen through the sampling window opened on the side wall of the protective tube. At the same time, the protective tube can also avoid contamination caused by taking out the specimen, further improving the safety performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure after cutting of the present invention;

[0022] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of area A in the middle;

[0023] Figure 4 It is a schematic diagram of the structure of the present invention after partial cutting and disassembly;

[0024] Figure 5 for Figure 4 Schematic diagram of the enlarged structure of the middle B area;

[0025] The figure marks in the drawings of the specification include: 1. first traction rope; 2. second traction rope; 3. connecting hole; 4. catheter; 5. collecting cylinder; 6. release chamber; 7. snap ring; 8. guide cylinder; 9. sampling window; 10. protective cylinder; 11. retaining ring; 12. slot; 13. side hole; 14. limiting ring; 15. guide plate; 16. fixing column; 17. connecting belt; 18. fixing groove; 19. rotating drum; 20. internal meshing gear; 21. spiral groove; 22. clamp; 23. rotating shaft; 24. pressure plate; 25. guide block; 26. connecting plate; 27. guide strip; 28. side groove; 29. directional plate; 30. guide groove; 31. moving plate; 32. control plate; 33. spur gear; 34. shearing knife. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments: Example

[0027] like Figures 1 to 5 As shown, the present invention provides a digestive tract endoscopy specimen collection device, comprising a catheter 4, a collecting tube 5 is provided at one end of the catheter 4, a shearing assembly is provided in the collecting tube 5, the shearing assembly comprises a fixing groove 18 opened on the inner side of one end of the collecting tube 5, an internal meshing gear 20 is provided for rotation in the fixing groove 18, a plurality of fixing columns 16 are evenly provided at one end of the collecting tube 5, a spur gear 33 is provided for rotation on the fixing column 16, a shearing knife 34 is connected to the outside of the spur gear 33, the internal meshing gear 20 is meshed with all the spur gears 33 at the same time, the catheter 4 is connected to the internal meshing gear 20 through a control assembly, and a clamping assembly is provided in the collecting tube 5.

[0028] like Figure 1 、 Figure 4 and Figure 5 As shown, the control assembly includes a pair of guide plates 15 arranged on the inner wall of the collecting cylinder 5, a control plate 32 is slidingly provided between the two guide plates 15, a rotating cylinder 19 is coaxially connected to the inner side of the internal meshing gear 20, a spiral groove 21 is provided on the side wall of the rotating cylinder 19, and a sliding button arranged on the outer side of the control plate 32 is slidingly provided in the spiral groove 21.

[0029] like Figure 1 、 Figure 3 and Figure 5As shown, multiple clamping rings 7 are provided in the conduit 4, and the first traction rope 1 is clamped in all the clamping rings 7. A side hole 13 is opened on the side wall of the connecting end of the conduit 4 and the collecting tube 5, and the free end of the first traction rope 1 passes through the side hole 13 and is connected to the control panel 32.

[0030] like Figure 1 、 Figure 2 、 Figure 4 and Figure 5 As shown, a pair of guide bars 27 are provided on the side wall of the conduit 4, and a movable plate 31 is slidingly provided between the two guide bars 27. A side groove 28 is also provided on the outside of the movable plate 31. The shape of the side groove 28 is the same as the cross-sectional shape of the clamping ring 7 provided on the inner wall of the conduit 4. A limiting ring 14 is provided at the connection between the conduit 4 and the collecting tube 5, and one side of the limiting ring 14 is in contact with one side of the movable plate 31.

[0031] like Figure 4 and Figure 5 As shown, the clamping assembly includes multiple rotating shafts 23 rotatably clamped on the movable plate 31, and a coil spring is provided at the hinge between the connecting plate 26 and the rotating shaft 23. The rotating shaft 23 is evenly distributed on the movable plate 31, and a connecting plate 26 and a clamp 22 are respectively provided on both sides of the rotating shaft 23. The winding direction of the coil spring is the same as the direction of the clamp 22 close to the axis of the movable plate 31. The clamp 22 is arc-shaped and is set in an outward convex direction.

[0032] like Figure 5 As shown, a plurality of pairs of directional plates 29 of the same number as the rotating shaft 23 are provided on the movable plate 31, and a guide groove 30 is provided on each directional plate 29. A guide block 25 is slidingly provided in the guide groove 30, and the two guide blocks 25 are connected by a pressure plate 24, and the outer side of the connecting plate 26 is in contact with the pressure plate 24.

[0033] like Figure 1 、 Figure 4 and Figure 5 As shown, a second traction rope 2 is passed through the free end of the catheter 4, and a plurality of connecting belts 17 are provided at one end of the second traction rope 2 close to the collecting tube 5. One end of each connecting belt 17 is connected to the inner side of the clamp 22. A plurality of slots 12 are provided at one end of the catheter 4 close to the collecting tube 5, and each pressure plate 24 is clamped in a slot 12.

[0034] At this time, the clamp 22 has completed the clamping of the specimen, and the pulling force of the second traction rope 2 will drive the movable plate 31 to move along the guide bar 27 on the side wall of the catheter 4 until the specimen moves into the release chamber 6 for specimen collection.

[0035] like Figure 1 and Figure 3 As shown, a release chamber 6 is provided at the free end of the catheter 4 , the inner diameter of which is larger than that of the collecting tube 5 , and a guide tube 8 is connected to the outside of the release chamber 6 , the inner diameter of which is larger than or equal to that of the catheter 4 .

[0036] like Figure 3 As shown, a baffle ring 11 is provided on the outside of the guide tube 8, a protective tube 10 is clamped on the outside of the baffle ring 11, gauze is provided at the bottom opening of the guide tube 8, and a sampling window 9 is opened on the side wall of the protective tube 10.

[0037] like Figure 1 、 Figure 2 and Figure 5 As shown, a connecting hole 3 is opened at one end of the conduit 4 close to the release chamber 6 , and an air pump is connected to the outside of the connecting hole 3 through a pipeline. The outer diameter of the movable plate 31 is equal to the inner diameter of the conduit 4 .

[0038] The release chamber 6 can help medical staff collect the collected specimens. When the movable plate 31 and the clamp 22 move to the release chamber 6, since the inner diameter of the release chamber 6 is larger than the inner diameter of the collecting tube 5, the clamp 22 will be quickly reset under the action of the coil spring, so that the specimen clamped by the clamp 22 is released. At this time, the specimen will fall under the action of gravity, so that the specimen will fall along the guide tube 8 to the gauze net set at the bottom opening of the guide tube 8, and then the medical staff can take out the specimen through the sampling window 9 opened on the side wall of the protective tube 10. At the same time, the protective tube 10 can also avoid contamination caused by taking out the specimen, further improving the safety performance of the device.

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

[0040] The shearing assembly provided in the present invention can seal and preserve the specimen while the device is cutting and collecting the specimen. When using the device to collect specimens, it is necessary to first use the air pump connected to one end of the catheter 4 through the connecting hole 3 to push the movable plate 31 to one end of the collecting cylinder 5, and then move the collecting cylinder 5 at one end of the catheter 4 to the position of the specimen to be cut, and then the first traction rope 1 can be pulled outward. At this time, the first traction rope 1 will pull outward the control plate 32 connected to its free end. Since the sliding button provided on the outer side of the control plate 32 is slidably carded in the spiral groove 21 provided on the side wall of the rotating drum 19, During the sliding process of this control plate 32 between the two guide plates 15, it will also drive the rotating drum 19 with the spiral groove 21 to rotate synchronously. Since the rotating drum 19 is coaxially connected to the internal gear 20, the internal gear 20 will drive all the spur gears 33 to rotate synchronously along the fixed column 16 connected to one end of the collecting tube 5 during the rotation of the rotating drum 19. The shearing knives connected to the outside of the spur gears 33 will be retracted synchronously, so that the shearing knives can shear the specimen together. When the shearing is completed, the specimen will be directly stored in the collecting tube 5. At this time, the clamping assembly can be driven to clamp the specimen and take it out.

[0041] The above is only an embodiment of the present invention, and the common knowledge such as the specific technical solutions and / or characteristics in the solution are not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the description can be used to interpret the content of the claims.

Claims

1. A digestive tract endoscopy specimen collection device, characterized in that: The invention comprises a conduit (4), a collecting tube (5) is provided at one end of the conduit (4), a shearing assembly is provided in the collecting tube (5), the shearing assembly comprises a fixing groove (18) opened on the inner side of one end of the collecting tube (5), an internal meshing gear (20) is provided in the rotating card in the fixing groove (18), a plurality of fixing columns (16) are evenly provided at one end of the collecting tube (5), a spur gear (33) is provided in the rotating card on the fixing column (16), a shearing knife (34) is connected to the outer side of the spur gear (33), the internal meshing gear (20) is meshed with all the spur gears (33) at the same time, the conduit (4) is connected to the internal meshing gear (20) through a control assembly, and a clamping assembly is provided in the collecting tube (5); The control assembly comprises a pair of guide plates (15) provided on the inner wall of the collecting cylinder (5), a control plate (32) being slidably mounted between the two guide plates (15), a rotating cylinder (19) being coaxially connected to the inner side of the internal meshing gear (20), a spiral groove (21) being provided on the side wall of the rotating cylinder (19), and a sliding button provided on the outer side of the control plate (32) being slidably mounted in the spiral groove (21); A plurality of clamping rings (7) are provided in the conduit (4), and a first traction rope (1) is clamped in all the clamping rings (7). A side hole (13) is provided on the side wall of the connecting end of the conduit (4) and the collecting cylinder (5), and the free end of the first traction rope (1) passes through the side hole (13) and is connected to the control panel (32); When using the device to collect specimens, it is necessary to first use the air pump connected to one end of the catheter (4) through the connecting hole (3) to push the movable plate (31) to one end of the collecting cylinder (5), and then move the collecting cylinder (5) at one end of the catheter (4) to the position of the specimen to be cut, and then pull the first traction rope (1) outward. At this time, the first traction rope (1) will pull the control plate (32) connected to its free end outward. Since the sliding button provided on the outside of the control plate (32) is slidably clamped in the spiral groove (21) provided on the side wall of the rotating cylinder (19), the control plate (32) is between the two guide plates (15). During the sliding process, the rotating drum (19) with the spiral groove (21) is also driven to rotate synchronously. Since the rotating drum (19) is coaxially connected to the internal gear (20), the internal gear (20) drives all the spur gears (33) to rotate synchronously along the fixed column (16) connected to one end of the collecting drum (5) during the rotation of the rotating drum (19). The shearing knives connected to the outside of the spur gears (33) are synchronously retracted, so that the shearing knives can shear the specimen together. When the shearing is completed, the specimen will be directly stored in the collecting drum (5). At this time, the clamping assembly is driven to clamp the specimen and take it out. A pair of guide bars (27) are provided on the side wall of the conduit (4), a movable plate (31) is provided between the two guide bars (27), a second traction rope (2) is passed through the free end of the conduit (4), and a release chamber (6) is provided at the free end of the conduit (4); After the clamping assembly clamps the specimen, the pulling force of the second traction rope (2) drives the movable plate (31) to move along the guide strip (27) on the side wall of the catheter (4) until the specimen moves into the release chamber (6) for specimen collection.

2. The digestive tract endoscopy specimen collection device according to claim 1, characterized in that: A side groove (28) is further provided on the outer side of the movable plate (31). The shape of the side groove (28) is the same as the cross-sectional shape of the clamping ring (7) provided on the inner wall of the conduit (4). A limiting ring (14) is provided at the connection between the conduit (4) and the collecting cylinder (5). One side of the limiting ring (14) contacts one side of the movable plate (31).

3. The digestive tract endoscopy specimen collection device according to claim 2, characterized in that: The clamping assembly includes a plurality of rotating shafts (23) rotatably mounted on the movable plate (31), a connecting plate (26) and a clamp (22) are respectively arranged on both sides of the rotating shaft (23), a coil spring is arranged at the hinge between the connecting plate (26) and the rotating shaft (23), the rotating shaft (23) is evenly distributed on the movable plate (31), the winding direction of the coil spring is the same as the direction of rotation of the clamp (22) close to the axis of the movable plate (31), and the clamp (22) is arc-shaped and arranged in an outward convex direction.

4. The digestive tract endoscopy specimen collection device according to claim 3, characterized in that: The movable plate (31) is provided with a plurality of pairs of directional plates (29) the same number as the rotating shaft (23), and each of the directional plates (29) is provided with a guide groove (30). A guide block (25) is provided in the guide groove (30) for sliding. The two guide blocks (25) are connected by a pressure plate (24), and the outer side of the connecting plate (26) is in contact with the pressure plate (24).

5. The digestive tract endoscopy specimen collection device according to claim 4, characterized in that: The second traction rope (2) is provided with a plurality of connecting belts (17) at one end close to the collecting cylinder (5), and one end of each connecting belt (17) is connected to the inner side of the clamp (22). The conduit (4) is provided with a plurality of slots (12) at one end close to the collecting cylinder (5), and each pressing plate (24) is clamped in one of the slots (12).

6. The digestive tract endoscopy specimen collection device according to claim 5, characterized in that: The inner diameter of the release chamber (6) is larger than the inner diameter of the collection tube (5); the outer side of the release chamber (6) is connected to a guide tube (8); the inner diameter of the guide tube (8) is larger than or equal to the inner diameter of the conduit (4).

7. The digestive tract endoscopy specimen collection device according to claim 6, characterized in that: A retaining ring (11) is provided on the outside of the guide tube (8), a protective tube (10) is clamped on the outside of the retaining ring (11), a gauze is provided at the bottom opening of the guide tube (8), and a sampling window (9) is provided on the side wall of the protective tube (10).

8. The digestive tract endoscopy specimen collection device according to claim 7, characterized in that: A connecting hole (3) is provided at one end of the conduit (4) close to the release chamber (6), and an air pump is connected to the outside of the connecting hole (3) via a pipeline. The outer diameter of the movable plate (31) is equal to the inner diameter of the conduit (4).

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