Ultrasonic endoscope puncture needle negative pressure aspirator device capable of quantitatively controlling negative pressure

Abstract

The invention belongs to the technical field of medical instruments, and discloses an ultrasonic endoscope puncture needle negative pressure aspirator device capable of quantitatively controlling negative pressure, which comprises a shell, and a sliding chute is formed in the top of the shell. By arranging a first extrusion block, a clamping block, a cross rod and an inclined block, an operator moves the first extrusion block to a proper position by moving a push plate according to focus tissue to be sucked, and at the moment, the inclined surface of the first extrusion block extrudes and pushes a second extrusion block at the corresponding position to move downwards, so that a vertical rod pushes the clamping block to move downwards; then an operator pulls a circular plate outwards, the circular plate drives a cross rod to move outwards through a sleeve plate and a circular rod, when the inclined face of an inclined block makes contact with the left side of a clamping block, the inclined block is squeezed and pushed to move downwards, the inclined block smoothly enters the clamping block and is fixed into the clamping block, then the cross rod is fixed, and the circular plate cannot move any more; the purpose of quantitatively controlling the negative pressure is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to an ultrasonic endoscopic puncture needle negative pressure aspirator device capable of quantitatively controlling negative pressure. Background Art

[0002] The ultrasonic endoscopic puncture needle negative pressure aspirator is a medical device that combines ultrasonic endoscopic technology and the principle of negative pressure aspiration. Under the guidance of the ultrasonic endoscope, the puncture needle is accurately inserted into the target tissue or organ, and then the mechanical suction of the negative pressure aspirator is used to draw out the fluid, secretions or tissue samples in the lesion for further cytological, histopathological examination or treatment.

[0003] When aspirating the lesion tissue, the doctor usually uses a syringe connected to a puncture needle, and pulls the piston handle outward to generate negative pressure in the syringe, and then aspirates the lesion tissue through the puncture needle. Although this method can perform the basic function of aspirating the lesion tissue, in actual use, due to the simple structure of the syringe, the negative pressure cannot be quantitatively controlled, resulting in the inability to accurately control the size of the suction force. When facing different lesion tissues, once the size of the suction force is not accurately controlled, it will cause too much or too little aspiration of the lesion tissue, so it needs to be improved. Summary of the invention

[0004] The purpose of the present invention is to provide an ultrasonic endoscopic puncture needle negative pressure aspirator device that quantitatively controls negative pressure to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical scheme: an ultrasonic endoscopic puncture needle negative pressure aspirator device for quantitatively controlling negative pressure, comprising a shell, a slide groove is provided at the top of the shell, a first extrusion block is movably installed on the left side inside the slide groove, a mounting plate is fixedly installed inside the shell, a vertical rod is movably sleeved inside the mounting plate, a clamping block is fixedly installed at the bottom of the vertical rod, a second extrusion block is fixedly installed on the top of the vertical rod, a reset spring is fixedly connected to the bottom end of the second extrusion block, and the bottom end of the reset spring is fixedly connected to the top end of the mounting plate, a cross bar is movably sleeved inside the shell, an inclined block is movably sleeved inside the left end of the cross bar, a first spring is fixedly connected to the bottom end of the inclined block, and the bottom end of the first spring is fixedly connected to the bottom of the inner surface of the cross bar, a syringe is movably installed at the bottom of the inner cavity of the shell, a piston is movably sleeved on the left side inside the syringe, a connecting rod is fixedly connected to the right side of the piston, and a circular plate is fixedly connected to the right end of the connecting rod.

[0006] Preferably, the front side of the top of the shell is provided with scale lines, a push plate is fixedly mounted on the top of the first extrusion block, and a triangular block is fixedly mounted on the front of the push plate.

[0007] Preferably, a partition below the cross bar is fixedly installed inside the shell, the upper surface of the partition is movably connected to the lower surface of the cross bar, and an arc plate is fixedly installed at the bottom of the partition, and the lower surface of the arc plate is movably connected to the outer surface of the injection barrel.

[0008] Preferably, the left end of the injection barrel is fixedly sleeved with an injection tube, the left end of the injection tube passes through the shell and extends to the left side of the shell and is movably sleeved with the inner wall of the shell, and the right end of the cross bar is movably sleeved with a round rod.

[0009] Preferably, a sleeve plate is fixedly mounted on the bottom of the round rod, and the inner surface of the sleeve plate is movably connected to the outer surface of the round plate.

[0010] Preferably, a top plate is fixedly mounted on the top of the round rod, a second spring is fixedly mounted on the bottom of the top plate, and the bottom end of the second spring is fixedly connected to the top of the cross rod.

[0011] Preferably, the right sides of the front and back sides of the shell are movably connected with movable plates, a vertical groove is opened inside the movable plate, a baffle is fixedly installed on the inner side of the movable plate, the outer surface of the baffle is movably connected to the inner wall of the shell, and the outer surface of the baffle is movably connected to the right end of the injection barrel.

[0012] Preferably, a fixing rod located inside the vertical slot is fixedly installed on the right side of the front and back sides of the shell, a rotating rod is movably sleeved on the outer surface of the fixing rod, and the outer surface of the rotating rod is movably connected to the outer surface of the movable plate.

[0013] Preferably, a limit plate is fixedly installed on the front side of the shell, a lifting plate is movably connected between the limit plates, a mounting block is fixedly installed on the top of the lifting plate, a fixed shaft is fixedly installed on the top of the mounting block, and a rotating plate is movably sleeved on the outer surface of the fixed shaft.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. The present invention provides a first extrusion block, a clamping block, a cross bar and an inclined block. The operator moves the first extrusion block to a suitable position by moving the push plate according to the lesion tissue to be aspirated. At this time, the inclined surface of the first extrusion block will squeeze and push the second extrusion block at the corresponding position to move downward, so that the vertical bar pushes the clamping block to move downward. Then the operator pulls the circular plate outward, so that the circular plate drives the cross bar to move outward through the sleeve plate and the circular bar. When the inclined surface of the inclined block contacts the left side of the clamping block, it will be squeezed and pushed to move downward, so that the inclined block smoothly enters the interior of the clamping block, thereby being fixed in the interior of the clamping block, and then the cross bar is fixed, so that the circular plate can no longer move, thereby achieving the purpose of quantitatively controlling the negative pressure.

[0016] 2. The present invention provides a movable plate, a vertical groove, a baffle and a rotating rod. When the operator needs to disassemble the syringe, he can rotate the rotating rod so that the rotating rod coincides with the vertical groove, and then pull the movable plate outward to make the baffle disengage from the syringe, thereby releasing the fixation of the syringe in the left and right directions, and then pull the sleeve plate upward to make the sleeve plate disengage from the circular plate, thereby completely releasing the restriction on the entire syringe, making it convenient for the operator to take out the syringe and test the diseased tissue inside.

[0017] 3. The present invention provides a limit plate, a lifting plate and a rotating plate. The operator can pull the lifting plate upwards to make the lifting plate rise under the limiting action of the limit plate, and then rotate the rotating plate to make the bottom of the rotating plate contact with the top of the shell, thereby preventing the lifting plate from moving downward. At this time, the operator can directly observe the situation inside the syringe, so that the operator can understand the suction progress of the lesion tissue more clearly and intuitively. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 It is a cross-sectional structural schematic diagram of the front side of the present invention;

[0020] Figure 3 It is a schematic cross-sectional structural diagram of the top of the present invention;

[0021] Figure 4 It is a structural schematic diagram of the back side of the present invention;

[0022] Figure 5 It is a schematic cross-sectional structural diagram of the side of the present invention;

[0023] Figure 6 for Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0024] Figure 7 for Figure 1 A schematic diagram of the local enlarged structure at B in the middle;

[0025] Figure 8 for Figure 2 Schematic diagram of the local enlarged structure at point C in the middle.

[0026] In the figure: 1. shell; 2. slide groove; 3. first extrusion block; 4. mounting plate; 5. vertical rod; 6. clamping block; 7. second extrusion block; 8. reset spring; 9. cross rod; 10. oblique block; 11. first spring; 12. syringe; 13. piston; 14. connecting rod; 15. round plate; 16. scale pattern; 17. push plate; 18. triangular block; 19. partition; 20. arc plate; 21. syringe; 22. round rod; 23. sleeve plate; 24. top plate; 25. second spring; 26. movable plate; 27. vertical groove; 28. baffle; 29. ​​fixed rod; 30. rotating rod; 31. limit plate; 32. lifting plate; 33. mounting block; 34. fixed shaft; 35. rotating plate. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] like Figures 1 to 8 As shown, an embodiment of the present invention provides an ultrasonic endoscopic puncture needle negative pressure aspirator device for quantitatively controlling negative pressure, comprising a shell 1, a slide groove 2 is provided at the top of the shell 1, a first extrusion block 3 is movably installed on the left side inside the slide groove 2, a mounting plate 4 is fixedly installed inside the shell 1, a vertical rod 5 is movably sleeved inside the mounting plate 4, a clamping block 6 is fixedly installed at the bottom of the vertical rod 5, a second extrusion block 7 is fixedly installed on the top of the vertical rod 5, a reset spring 8 is fixedly connected to the bottom end of the second extrusion block 7, and the bottom end of the reset spring 8 is fixedly connected to the top end of the mounting plate 4, a cross bar 9 is movably sleeved inside the shell 1, an inclined block 10 is movably sleeved inside the left end of the cross bar 9, a first spring 11 is fixedly connected to the bottom end of the inclined block 10, and the bottom end of the first spring 11 is fixedly connected to the bottom of the inner surface of the cross bar 9, a syringe 12 is movably installed at the bottom of the inner cavity of the shell 1, a piston 13 is movably sleeved on the left side inside the syringe 12, a connecting rod 14 is fixedly connected to the right side of the piston 13, and a circular plate 15 is fixedly connected to the right end of the connecting rod 14.

[0029] First, before suctioning the lesion tissue, the operator determines the negative pressure required for suction, and moves the first extrusion block 3 to the right to the specified position so that the inclined surface of the first extrusion block 3 squeezes and pushes the inclined surface of the second extrusion block 7, thereby causing the second extrusion block 7 to move downward, and then drives the block 6 to move downward through the vertical rod 5. When the first extrusion block 3 stops moving, the block 6 at the current position of the first extrusion block 3 will be lower in height than the other blocks 6. When the cross bar 9 moves to the right, the inclined surface of the inclined block 10 will contact the left side of the block 6, thereby causing the inclined block 10 to move downward into the interior of the block 6. Since the left end of the block 6 is shorter than the right end, the inclined block 10 is fixed inside the block 6, thereby fixing the cross bar 9.

[0030] A scale pattern 16 is provided on the front side of the top of the shell 1 , a push plate 17 is fixedly installed on the top of the first extrusion block 3 , and a triangular block 18 is fixedly installed on the front side of the push plate 17 .

[0031] When the operator pushes the push plate 17 , the operator can determine the negative pressure at the current position by observing the value of the scale pattern 16 at the position pointed by the triangular block 18 .

[0032] Among them, a partition 19 located below the cross bar 9 is fixedly installed inside the shell 1, and the upper surface of the partition 19 is movably connected to the lower surface of the cross bar 9. An arc plate 20 is fixedly installed at the bottom of the partition 19, and the lower surface of the arc plate 20 is movably connected to the outer surface of the injection barrel 12.

[0033] The bottom of the arc plate 20 is arc-shaped and can fit with the syringe 12 , so as to limit the position of the syringe 12 and prevent the syringe 12 from shaking back and forth inside the housing 1 .

[0034] Among them, the left end of the injection barrel 12 is fixedly sleeved with an injection tube 21, the left end of the injection tube 21 penetrates the shell 1 and extends to the left side of the shell 1 and is movably sleeved with the inner wall of the shell 1, and the right end of the cross bar 9 is movably sleeved with a round rod 22.

[0035] The operator pulls the circular plate 15 to the right, so that the connecting rod 14 drives the piston 13 to move to the right inside the syringe 12, so that the injection tube 21 can generate negative pressure, thereby being able to suck the diseased tissue.

[0036] A sleeve plate 23 is fixedly mounted on the bottom of the round rod 22 , and the inner surface of the sleeve plate 23 is movably connected to the outer surface of the round plate 15 .

[0037] By setting the sleeve plate 23, when the sleeve plate 23 is sleeved on the outer surface of the circular plate 15, the circular plate 15 can be connected to the cross bar 9, so that the movement of the circular plate 15 can drive the cross bar 9 to move. The operator can move the sleeve plate 23 upward to make the sleeve plate 23 break away from the contact with the circular plate 15, thereby releasing the connection between the circular plate 15 and the cross bar 9.

[0038] A top plate 24 is fixedly mounted on the top of the round rod 22 , a second spring 25 is fixedly mounted on the bottom of the top plate 24 , and a bottom end of the second spring 25 is fixedly connected to the top of the cross bar 9 .

[0039] By providing the second spring 25 , the second spring 25 can pull the top plate 24 downward under the action of elastic recovery, so that the top plate 24 drives the round rod 22 and the sleeve plate 23 to move downward, preventing the sleeve plate 23 from separating from the outer surface of the circular plate 15 .

[0040] Among them, the right sides of the front and back of the shell 1 are movably connected with a movable plate 26, a vertical groove 27 is opened inside the movable plate 26, and a baffle 28 is fixedly installed on the inner side of the movable plate 26. The outer surface of the baffle 28 is movably connected to the inner wall of the shell 1, and the outer surface of the baffle 28 is movably connected to the right end of the injection barrel 12.

[0041] By setting the baffle 28, the baffle 28 can fix the syringe 12 to prevent the syringe 12 from moving left and right inside the shell 1. The operator can pull the movable plate 26 outward to drive the baffle 28 to move outward, so that the baffle 28 is out of contact with the syringe 12, thereby releasing the restriction on the syringe 12.

[0042] Among them, a fixing rod 29 located inside the vertical groove 27 is fixedly installed on the right side of the front and back of the shell 1, and a rotating rod 30 is movably sleeved on the outer surface of the fixing rod 29, and the outer surface of the rotating rod 30 is movably connected to the outer surface of the movable plate 26.

[0043] The operator rotates the rotating rod 30 so that the rotating rod 30 overlaps with the vertical slot 27, thereby releasing the fixing effect on the movable plate 26. At this time, the movable plate 26 is moved outward so that the rotating rod 30 passes through the vertical slot 27, thereby releasing the fixing effect on the syringe 12.

[0044] Among them, a limit plate 31 is fixedly installed on the front of the shell 1, a lifting plate 32 is movably connected between the limit plates 31, a mounting block 33 is fixedly installed on the top of the lifting plate 32, a fixed shaft 34 is fixedly installed on the top of the mounting block 33, and a rotating plate 35 is movably sleeved on the outer surface of the fixed shaft 34.

[0045] The operator pulls the lifting plate 32 upward, and then rotates the rotating plate 35 so that the bottom of the rotating plate 35 contacts the top of the shell 1, thereby preventing the lifting plate 32 from moving downward, allowing the operator to observe the diseased tissue inside the injection barrel 12.

[0046] Working principle and usage process:

[0047] When the operator needs to aspirate the lesion tissue, he first connects the puncture needle to the injection tube 21, selects a suitable negative pressure value according to the lesion, and then pushes the push plate 17, so that the push plate 17 drives the first extrusion block 3 to move, and by observing the value of the scale pattern 16 pointed to by the triangular block 18, the push plate 17 is pushed to a suitable position. When the first extrusion block 3 moves to the right, it will squeeze and push the inclined surfaces of each second extrusion block 7, so that the second extrusion block 7 moves downward, so that the first extrusion block 3 can move to the right smoothly. When the first extrusion block 3 stops moving, the first extrusion block 3 will push the second extrusion block 7 at its position to move downward, so that the vertical rod 5 drives the card block 6 to move to the right. When the circular plate 15 moves to the right, it will drive the cross bar 9 to move to the right through the sleeve plate 23 and the round rod 22, and the cross bar 9 will drive the inclined block 10 to move to the right. When the inclined surface of the inclined block 10 contacts the left side of the block 6, it will be squeezed and pushed to move downward, and then reset upward under the elastic force of the first spring 11, so that the inclined block 10 can smoothly enter the interior of the block 6. Since the length of the left end of the block 6 is less than the length of the right end, the inclined block 10 is fixed inside the block 6, and then the cross bar 9 is fixed, so that the circular plate 15 can no longer move, thereby achieving the purpose of quantitative control of negative pressure.

[0048] During the process of aspirating the diseased tissue, if the operator needs to observe the diseased tissue inside the injection barrel 12, the operator can pull the lifting plate 32 upward so that the lifting plate 32 rises under the limiting action of the limiting plate 31, and then rotate the rotating plate 35 so that the bottom of the rotating plate 35 contacts the top of the shell 1, thereby preventing the lifting plate 32 from descending. At this time, the operator can directly observe the inside of the injection barrel 12, so that the operator can understand the progress of aspiration of the diseased tissue more clearly and intuitively.

[0049] After the suction is completed, the operator pushes the push plate 17 to reset the first extrusion block 3. At this time, the reset spring 8 will push the second extrusion block 7 to reset under the action of elastic recovery, thereby releasing the fixing effect on the inclined block 10. Then the operator rotates the rotating rod 30 to make the rotating rod 30 coincide with the vertical groove 27, and then pulls the movable plate 26 outward to make the baffle 28 disengage from the contact with the syringe 12, thereby releasing the fixation of the syringe 12 in the left and right directions, and then pulls the sleeve plate 23 upward to make the sleeve plate 23 disengage from the contact with the circular plate 15. At this time, by pulling the syringe 12 outward, the syringe 12 can be taken out from the inside of the shell 1, and the diseased tissue inside the syringe 12 can be tested.

[0050] 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", "comprises" or any other variations 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.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ultrasonic endoscopic puncture needle negative pressure aspirator device for quantitatively controlling negative pressure, comprising a housing (1), characterized in that: The top of the shell (1) is provided with a slide groove (2), a first extrusion block (3) is movably installed on the left side of the slide groove (2), a mounting plate (4) is fixedly installed inside the shell (1), a vertical rod (5) is movably sleeved inside the mounting plate (4), a clamping block (6) is fixedly installed at the bottom of the vertical rod (5), a second extrusion block (7) is fixedly installed on the top of the vertical rod (5), a reset spring (8) is fixedly connected to the bottom end of the second extrusion block (7), and the bottom end of the reset spring (8) is fixedly connected to the top end of the mounting plate (4). The shell (1 ) is movably sleeved with a cross bar (9), the left end of the cross bar (9) is movably sleeved with an inclined block (10), the bottom end of the inclined block (10) is fixedly connected to a first spring (11), the bottom end of the first spring (11) is fixedly connected to the bottom of the inner surface of the cross bar (9), an injection cylinder (12) is movably mounted at the bottom of the inner cavity of the shell (1), a piston (13) is movably sleeved on the left side of the injection cylinder (12), a connecting rod (14) is fixedly connected to the right side of the piston (13), and a circular plate (15) is fixedly connected to the right end of the connecting rod (14).

2. The ultrasonic endoscopic puncture needle negative pressure aspirator device with quantitative negative pressure control according to claim 1, characterized in that: The front side of the top of the shell (1) is provided with a scale pattern (16), a push plate (17) is fixedly mounted on the top of the first extrusion block (3), and a triangular block (18) is fixedly mounted on the front side of the push plate (17).

3. The ultrasonic endoscopic puncture needle negative pressure aspirator device with quantitative negative pressure control according to claim 1, characterized in that: A partition (19) located below the cross bar (9) is fixedly installed inside the shell (1), and the upper surface of the partition (19) is movably connected to the lower surface of the cross bar (9). An arc plate (20) is fixedly installed at the bottom of the partition (19), and the lower surface of the arc plate (20) is movably connected to the outer surface of the injection barrel (12).

4. The ultrasonic endoscopic puncture needle negative pressure aspirator device with quantitative negative pressure control according to claim 1, characterized in that: The left end of the injection barrel (12) is fixedly sleeved with an injection tube (21), the left end of the injection tube (21) passes through the shell (1) and extends to the left side of the shell (1) and is movably sleeved with the inner wall of the shell (1), and the right end of the cross bar (9) is movably sleeved with a round rod (22).

5. The ultrasonic endoscopic puncture needle negative pressure aspirator device with quantitative negative pressure control according to claim 4, characterized in that: A sleeve plate (23) is fixedly mounted on the bottom of the round rod (22), and the inner surface of the sleeve plate (23) is movably connected to the outer surface of the round plate (15).

6. The ultrasonic endoscopic puncture needle negative pressure aspirator device with quantitative negative pressure control according to claim 4, characterized in that: A top plate (24) is fixedly mounted on the top of the round rod (22), a second spring (25) is fixedly mounted on the bottom of the top plate (24), and the bottom end of the second spring (25) is fixedly connected to the top of the cross bar (9).

7. The ultrasonic endoscopic puncture needle negative pressure aspirator device with quantitative negative pressure control according to claim 1, characterized in that: The right sides of the front and back sides of the shell (1) are both movably connected with movable plates (26), a vertical groove (27) is provided inside the movable plate (26), a baffle (28) is fixedly installed on the inner side of the movable plate (26), the outer surface of the baffle (28) is movably connected to the inner wall of the shell (1), and the outer surface of the baffle (28) is movably connected to the right end of the injection cylinder (12).

8. The ultrasonic endoscopic puncture needle negative pressure aspirator device with quantitative negative pressure control according to claim 1, characterized in that: A fixing rod (29) located inside the vertical slot (27) is fixedly installed on the right side of the front and back sides of the shell (1), and a rotating rod (30) is movably sleeved on the outer surface of the fixing rod (29), and the outer surface of the rotating rod (30) is movably connected to the outer surface of the movable plate (26).

9. The ultrasonic endoscopic puncture needle negative pressure aspirator device with quantitative negative pressure control according to claim 1, characterized in that: A limit plate (31) is fixedly mounted on the front of the shell (1), a lifting plate (32) is movably connected between the limit plates (31), a mounting block (33) is fixedly mounted on the top of the lifting plate (32), a fixed shaft (34) is fixedly mounted on the top of the mounting block (33), and a rotating plate (35) is movably sleeved on the outer surface of the fixed shaft (34).

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