Negative pressure test tube amniotic fluid puncture device

Abstract

The utility model relates to the technical field of amniotic fluid puncture, in particular to a negative pressure test tube amniotic fluid puncture device which comprises a base, a lifting rod is fixedly connected to the surface of the base, an adjusting mechanism is fixedly connected to the lifting end of the lifting rod, and a deflection mechanism is fixedly connected to the moving end of the adjusting mechanism through a connecting block. The movable end of the deflection mechanism is fixedly connected with a feeding mechanism through a connecting block, the feeding end of the feeding mechanism is fixedly connected with a clamping mechanism through a connecting block, the feeding mechanism comprises a fixing plate, and the movable end of the deflection mechanism is fixedly connected with a fixing plate through a connecting block; due to the fact that the connecting plate moves, the clamping mechanism is used for driving the puncture needle to move along the adjusted angle, the abdominal wall can be punctured, the accurate puncture depth can be known by reading the scale change corresponding to the fixing plate, puncture is driven through threads, the puncture needle can move more stably during puncture, and the puncture effect is better. Therefore, a doctor can conveniently control the puncture depth.

Description

Technical Field

[0001] This utility model relates to the field of amniocentesis technology, and in particular to a negative pressure test tube amniocentesis device. Background Technology

[0002] Amniocentesis, also known as negative pressure amniocentesis, is a prenatal diagnostic procedure. Under ultrasound guidance, a needle is inserted through the pregnant woman's abdominal wall into the amniotic cavity to extract a certain amount of amniotic fluid. This fluid sample is then collected using a negative pressure tube to assess the condition of the fetus. Before the amniocentesis procedure, the pregnant woman needs to undergo an ultrasound to determine the position of the fetus. Based on the position of the fetus, the location, angle, and depth of the needle insertion for amniocentesis are selected.

[0003] When performing amniocentesis, the doctor first selects a suitable needle insertion location and angle, then manually inserts the needle into the selected site and to a suitable depth. The doctor then opens the stop clamp and uses negative pressure to draw amniotic fluid into the test tube. However, it is not easy to maintain stability during the puncture by manually inserting the needle, making it difficult to control the depth of insertion. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing the following technical solution: a negative pressure amniocentesis device, comprising a base, a lifting rod fixedly connected to the surface of the base, an adjusting mechanism fixedly connected to the lifting end of the lifting rod, a deflection mechanism fixedly connected to the moving end of the adjusting mechanism via a connecting block, a feeding mechanism fixedly connected to the movable end of the deflection mechanism via a connecting block, a clamping mechanism fixedly connected to the feeding end of the feeding mechanism via a connecting block, the feeding mechanism comprising a fixed plate, a fixed plate fixedly connected to the movable end of the deflection mechanism via a connecting block, a threaded rod threaded through the fixed plate, a connecting plate rotatably connected to the lower end of the threaded rod, a guide rod fixedly connected to the surface of the connecting plate, the guide rod penetrating the fixed plate and slidably connected to the fixed plate, graduation lines provided on the surface of the guide rod, and the connecting plate fixedly connected to the clamping mechanism via a connecting block.

[0005] As an improvement to the above technical solution, the adjusting mechanism includes a fixed shell, the lifting end of the lifting rod is fixedly connected to the fixed shell, a rotating body is rotatably connected inside the fixed shell, a rubber layer is provided on the inner wall of the fixed shell, a rotating rod is fixedly connected to the upper end of the rotating body, the rotating rod passes through an opening on the surface of the fixed shell, a swing plate is fixedly connected to the upper end of the rotating rod, a sliding opening is provided on the surface of the swing plate, a slider is slidably connected inside the sliding opening, a rubber layer is provided on the inner wall of the latch of the slider, and the slider is fixedly connected to the deflection mechanism through a connecting block.

[0006] As an improvement to the above technical solution, the deflection mechanism includes a ball sleeve, the slider is fixedly connected to the ball sleeve through a connecting block, a ball is movably connected inside the ball sleeve, the ball sleeve is threadedly connected to a fastening screw through a threaded hole on its surface, and the ball is fixedly connected to a fixing plate through the connecting block.

[0007] As an improvement to the above technical solution, the clamping mechanism includes a slide rail, the connecting plate is fixedly connected to the slide rail via a connecting block, a second slider is slidably connected inside the slide rail, a spring is provided inside the slide rail, one end of the spring is fixedly connected to the second slider, the other end of the spring is fixedly connected to the slide rail, a movable clamping plate is fixedly connected to one end of the second slider, a fixed clamping plate is fixedly connected to the surface of the slide rail, the movable clamping plate is aligned with the fixed clamping plate, and both the movable clamping plate and the fixed clamping plate have arc-shaped grooves on their surfaces, the arc-shaped grooves being roughened.

[0008] The beneficial effects of this utility model are:

[0009] As the connecting plate moves, the clamping mechanism drives the puncture needle to move along the adjusted angle, allowing for puncture of the abdominal wall. By reading the corresponding scale changes on the fixing plate, the accurate puncture depth can be determined. The threaded puncture drive makes the movement of the puncture needle more stable during puncture, thus making it easier for doctors to control the puncture depth. Attached Figure Description

[0010] Figure 1 This is a structural diagram of the present invention;

[0011] Figure 2 This is a diagram of the internal structure of the fixed shell of this utility model;

[0012] Figure 3 This is a structural diagram of the slider of this utility model;

[0013] Figure 4 This is a structural diagram of the feed mechanism of this utility model;

[0014] Figure 5 This is a side view of the clamping mechanism of this utility model.

[0015] Reference numerals in the attached drawings: 1. Base; 2. Lifting rod; 3. Adjustment mechanism; 31. Fixed shell; 32. Rotating body; 33. Rotating rod; 34. Swing plate; 35. Sliding opening; 36. Slider one; 4. Deflection mechanism; 41. Ball sleeve; 42. Ball; 43. Fastening screw; 5. Feeding mechanism; 51. Fixed plate; 52. Threaded rod; 53. Connecting plate; 54. Guide rod; 6. Clamping mechanism; 61. Slide rail; 62. Slider two; 63. Spring; 64. Moving clamp; 65. Fixed clamp. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the following provides a more detailed description of the utility model. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the utility model.

[0017] Please see Figure 1-5 This utility model provides a technical solution: a negative pressure amniocentesis device, including a base 1, a lifting rod 2 fixedly connected to the surface of the base 1, an adjusting mechanism 3 fixedly connected to the lifting end of the lifting rod 2, a deflection mechanism 4 fixedly connected to the moving end of the adjusting mechanism 3 via a connecting block, a feeding mechanism 5 fixedly connected to the movable end of the deflection mechanism 4 via a connecting block, a clamping mechanism 6 fixedly connected to the feeding end of the feeding mechanism 5 via a connecting block, the feeding mechanism 5 including a fixed plate 51, the fixed plate 51 fixedly connected to the movable end of the deflection mechanism 4 via a connecting block, a threaded rod 52 threaded through the fixed plate 51, a connecting plate 53 rotatably connected to the lower end of the threaded rod 52, a guide rod 54 fixedly connected to the surface of the connecting plate 53, the guide rod 54 passing through the fixed plate 51 and slidably connected to the fixed plate 51, a scale line provided on the surface of the guide rod 54, and the connecting plate 53 fixedly connected to the clamping mechanism 6 via a connecting block.

[0018] In this implementation scheme, the needle hub of the puncture needle is first clamped by the clamping mechanism 6, thereby fixing the puncture needle. Then, the position of the puncture needle is changed by adjusting the adjusting mechanism 3, and then the angle of the puncture needle is changed by adjusting the deflection mechanism 4. After adjustment, the lifting rod 2 is activated, causing the lifting end of the lifting rod 2 to rise and fall, thereby moving the puncture needle closer to the puncture position. When the distance between the puncture needle and the puncture position is appropriate, the lifting rod 2 is closed, and then the threaded rod 52 is rotated, thereby moving the connecting plate 53. At the same time, the guide rod 54 slides relative to the fixing plate 51. Due to the movement of the connecting plate 53, the clamping mechanism 6 drives the puncture needle to move along the adjusted angle, thereby allowing puncture of the abdominal wall. By reading the corresponding scale change of the fixing plate 51, the accurate puncture depth can be determined. The threaded puncture makes the movement of the puncture needle more stable during puncture, thus making it easier for the doctor to control the puncture depth.

[0019] Specifically, the adjustment mechanism 3 includes a fixed shell 31, the lifting end of the lifting rod 2 is fixedly connected to the fixed shell 31, the inside of the fixed shell 31 is rotatably connected to a rotating body 32, the inner wall of the fixed shell 31 is provided with a rubber layer, the upper end of the rotating body 32 is fixedly connected to a rotating rod 33, the rotating rod 33 passes through an opening on the surface of the fixed shell 31, the upper end of the rotating rod 33 is fixedly connected to a swing plate 34, the surface of the swing plate 34 is provided with a sliding opening 35, the inside of the sliding opening 35 is slidably connected to a slider 36, the inner wall of the slot of the slider 36 is provided with a rubber layer, and the slider 36 is fixedly connected to the deflection mechanism 4 through a connecting block.

[0020] In this embodiment, when adjusting the puncture position, the rotating rod 33 is first rotated, causing the rotating body 32 to rotate inside the fixed shell 31, which in turn causes the swing plate 34 to swing. Then, the slider 36 is moved, causing the slider 36 to slide inside the sliding opening 35, thereby causing the puncture needle to change position. By combining the above two methods, the position of the puncture needle can be changed. At the same time, the rubber layer can provide a certain resistance to the movement of the rotating body 32 and the slider 36, thereby playing a self-locking role.

[0021] Specifically, the deflection mechanism 4 includes a ball sleeve 41, a slider 36 is fixedly connected to the ball sleeve 41 via a connecting block, a ball 42 is movably connected inside the ball sleeve 41, a fastening screw 43 is threadedly connected to the ball sleeve 41 through a threaded hole on its surface, and the ball 42 is fixedly connected to the fixing plate 51 via the connecting block.

[0022] In this embodiment, when it is necessary to adjust the puncture angle, the ball 42 is rotated so that the ball 42 rotates inside the ball sleeve 41, thereby causing the puncture needle to rotate. After the rotation angle of the puncture needle is adjusted, the user rotates the fastening screw 43, which presses against the ball 42 to achieve self-locking after rotation.

[0023] Specifically, the clamping mechanism 6 includes a slide rail 61, a connecting plate 53 is fixedly connected to the slide rail 61 via a connecting block, a slider 62 is slidably connected inside the slide rail 61, a spring 63 is provided inside the slide rail 61, one end of the spring 63 is fixedly connected to the slider 62, the other end of the spring 63 is fixedly connected to the slide rail 61, a movable clamping plate 64 is fixedly connected to one end of the slider 62, a fixed clamping plate 65 is fixedly connected to the surface of the slide rail 61, the movable clamping plate 64 is aligned with the fixed clamping plate 65, and both the surfaces of the movable clamping plate 64 and the fixed clamping plate 65 are provided with arc-shaped grooves, which are roughened.

[0024] In this embodiment, when it is necessary to fix the puncture needle, the user first pulls the movable clamp 64, thereby causing the slider 62 to slide inside the slide rail 61, which in turn compresses the spring 63. Then, the needle seat of the puncture needle is placed into the groove of the movable clamp 64 and the fixed clamp 65. Then, the movable clamp 64 is released, and under the elastic force of the spring 63, the puncture needle is clamped and fixed by the movable clamp 64 and the fixed clamp 65.

[0025] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A negative pressure amniocentesis device, comprising a base (1), wherein a lifting rod (2) is fixedly connected to the surface of the base (1), an adjusting mechanism (3) is fixedly connected to the lifting end of the lifting rod (2), a deflection mechanism (4) is fixedly connected to the moving end of the adjusting mechanism (3) via a connecting block, a feeding mechanism (5) is fixedly connected to the movable end of the deflection mechanism (4) via a connecting block, and a clamping mechanism (6) is fixedly connected to the feeding end of the feeding mechanism (5) via a connecting block, characterized in that: The feeding mechanism (5) includes a fixed plate (51), the movable end of the deflection mechanism (4) is fixedly connected with the fixed plate (51) through a connecting block, a threaded rod (52) is threadedly connected to the surface of the fixed plate (51) and is provided through the fixed plate (51), a connecting plate (53) is rotatably connected to the lower end of the threaded rod (52), a guide rod (54) is fixedly connected to the surface of the connecting plate (53), the guide rod (54) penetrates through the fixed plate (51) and is slidably connected with the fixed plate (51), and a scale line is arranged on the surface of the guide rod (54). The connecting plate (53) is fixedly connected with the clamping mechanism (6) through a connecting block.

2. A negative pressure test tube amniocentesis device according to claim 1, wherein: The adjusting mechanism (3) includes a fixed shell (31), the lifting end of the lifting rod (2) is fixedly connected with the fixed shell (31), a rotating body (32) is rotatably connected in the fixed shell (31), a rubber layer is arranged on the inner wall of the fixed shell (31), a rotating rod (33) is fixedly connected to the upper end of the rotating body (32), the rotating rod (33) penetrates through the through hole formed in the surface of the fixed shell (31), a swing plate (34) is fixedly connected to the upper end of the rotating rod (33), a sliding opening (35) is formed in the surface of the swing plate (34), a sliding block one (36) is slidably connected in the sliding opening (35), a rubber layer is arranged on the inner wall of the bayonet of the sliding block one (36), and the sliding block one (36) is fixedly connected with the deflection mechanism (4) through a connecting block.

3. A negative pressure test tube amniocentesis device according to claim 2, wherein: The deflection mechanism (4) includes a ball sleeve (41), the sliding block one (36) is fixedly connected with the ball sleeve (41) through a connecting block, a ball (42) is movably connected in the ball sleeve (41), and a fastening screw (43) is threadedly connected to the threaded hole formed in the surface of the ball sleeve (41). The ball (42) is fixedly connected with the fixed plate (51) through a connecting block.

4. A negative pressure test tube amniocentesis device according to claim 1, wherein: The clamping mechanism (6) includes a sliding rail (61), the connecting plate (53) is fixedly connected with the sliding rail (61) through a connecting block, a sliding block two (62) is slidably connected in the sliding rail (61), a spring (63) is arranged in the sliding rail (61), one end of the spring (63) is fixedly connected with the sliding block two (62), the other end of the spring (63) is fixedly connected with the sliding rail (61), a moving clamping plate (64) is fixedly connected to one end of the sliding block two (62), a fixed clamping plate (65) is fixedly connected to the surface of the sliding rail (61), the moving clamping plate (64) is aligned with the fixed clamping plate (65), arc-shaped grooves are formed in the surfaces of the moving clamping plate (64) and the fixed clamping plate (65), and the arc-shaped grooves are subjected to roughening treatment.

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