Amniotic cavity constant-speed perfusion device

Abstract

The utility model discloses an amniotic cavity constant-speed perfusion device which effectively solves the problem that an existing amniotic cavity perfusion tool cannot conduct constant-speed perfusion. Comprising an up-down axial main body column, a left-right supporting rod is arranged at the upper end of the main body column, an up-down through sliding groove is formed in the supporting rod, a positioning shell is slidably connected into the sliding groove, an up-down axial up-down through needle placing hole is formed in the upper end of the positioning shell, and a puncture needle is detachably connected into the needle placing hole; an up-down axial containing groove is formed in the upper end of the main body column, a piston cylinder with a downward opening is coaxially arranged in the containing groove, a piston plate capable of moving up and down is coaxially arranged in the piston cylinder, and the upper end of the piston cylinder is connected with the upper end of the puncture needle through a hose; the amniotic cavity puncture infusion device can achieve puncture infusion of an amniotic cavity of a patient, relieve the phenomenon that the amniotic fluid of the patient is too little, keep constant-speed uniform infusion in the whole infusion process, and prevent the situation that the infusion speed is too high or too low, and consequently the patient is hurt.

Description

Technical Field

[0001] The utility model relates to the technical field of gynecological and obstetric treatment instruments, in particular to an amniotic cavity constant-speed perfusion device. Background Art

[0002] Amnioinfusion is mainly used for pregnant women with too little amniotic fluid. Under the guidance of B-ultrasound, an appropriate amount of saline is injected into the amniotic cavity through the abdomen with a puncture needle. This can artificially increase the amniotic fluid in the amniotic cavity, provided that the amniotic membrane is intact. Amnioinfusion therapy is a relatively direct and rapid method to increase the amniotic fluid of pregnant women, and can quickly alleviate the impact of low amniotic fluid on the fetus. During amnioinfusion, the patient needs to lie flat on the bed, and then use the puncture needle to puncture into the amniotic cavity. Then the other end of the puncture needle is connected to the syringe through a hose, and the medical staff slowly pushes the syringe handle to slowly inject the perfusion fluid in the syringe into the patient's amniotic cavity. However, this traditional perfusion device has the following defects when used: it cannot guarantee constant-speed perfusion throughout the entire process. During perfusion, manual push injection is required. Medical staff are prone to hand soreness and cramps during long-term slow push injection. It is impossible to guarantee uniform push injection. Too fast or too slow perfusion speed can easily cause damage to the amniotic membrane. Utility Model Content

[0003] In view of the above situation, in order to make up for the deficiencies of the prior art, the purpose of the utility model is to provide an amniocentesis constant speed infusion device, which effectively solves the problem that the existing amniocentesis devices cannot perform constant speed infusion.

[0004] The technical solution is as follows: the utility model comprises a main column with an upper and lower axial direction, a support rod in the left and right directions is arranged at the upper end of the main column, a sliding groove which passes through the upper and lower parts is provided on the support rod, a positioning shell is slidably connected in the sliding groove, a needle hole which passes through the upper and lower parts is provided at the upper end of the positioning shell, a puncture needle is detachably connected in the needle hole, a receiving groove which passes through the upper and lower parts is provided at the upper end of the main column, a piston cylinder which opens downward is coaxially arranged in the receiving groove, a piston plate which can move up and down is coaxially arranged in the piston cylinder, and the upper end of the piston cylinder is connected to the upper end of the puncture needle through a hose; a U-shaped fixing plate is provided at the lower end of the main column, a pressure plate is slidably connected in the fixing plate, and a clamping stud which passes through the upper and lower parts and is threadedly connected to the fixing plate is provided at the lower end of the pressure plate; the lower end of the clamping stud passes through the fixing plate And a knob is provided; the front end of the support rod is provided with a plurality of limit holes evenly distributed in the left and right directions, and a positioning plate located in front of the pinhole is slidably connected in the positioning shell, and a limit column which can be inserted into the limit hole is provided at the front end of the positioning plate; a connecting column is provided at the front end of the positioning plate, and a pressure plate is provided at the front end of the connecting column; a compression spring located between the pressure plate and the support rod is mounted on the connecting column; a clearance groove located below the limit hole is provided at the front end of the support rod, and the connecting column is located in the clearance groove; the piston plate is slidably connected with the piston cylinder, and a threaded tube slidably connected to the accommodating groove is coaxially provided at the lower end of the piston plate, a motor is provided on the bottom surface of the accommodating groove, and a power stud threadedly connected to the threaded tube is provided on the output shaft of the motor; an observation groove in the up and down directions and connected to the accommodating groove is provided at the right end of the main column.

[0005] Compared with the prior art, the utility model has the beneficial effects of: being able to realize puncture and perfusion of the patient's amniotic cavity, alleviating the phenomenon of oligohydramnios in the patient, and maintaining a constant and uniform perfusion speed throughout the perfusion process, preventing damage to the patient caused by too fast or too slow perfusion speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is the main axonometric drawing of the utility model.

[0007] Figure 2 It is a full-section main axonometric drawing of the utility model.

[0008] Figure 3 It is a full-section left-view axonometric drawing of the utility model.

[0009] Figure 4 It is a full-section top view axonometric drawing of the utility model.

[0010] Figure 5 This utility model Figure 3 A is an enlarged view of the middle image. DETAILED DESCRIPTION

[0011] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0012] Depend on Figures 1 to 5 The present invention comprises a main column 1 in the vertical axial direction, a support rod 2 in the left and right direction is arranged at the upper end of the main column 1, a sliding groove 3 which passes through the upper and lower parts is provided on the support rod 2, a positioning shell 4 is slidably connected in the sliding groove 3, a needle hole 5 which passes through the upper and lower parts in the vertical axial direction is provided at the upper end of the positioning shell 4, a puncture needle 6 is detachably connected in the needle hole 5, a receiving groove 7 in the vertical axial direction is provided at the upper end of the main column 1, a piston cylinder 8 with an opening facing downward is coaxially arranged in the receiving groove 7, a piston plate 9 which can move up and down is coaxially arranged in the piston cylinder 8, and the upper end of the piston cylinder 8 is connected to the upper end of the puncture needle 6 via a hose 10.

[0013] In order to facilitate the fixing of the main column 1, a U-shaped fixing plate 11 is provided at the lower end of the main column 1, and a pressure plate 12 is slidably connected inside the fixing plate 11. The lower end of the pressure plate 12 is provided with a clamping stud 13 which is axially connected to the fixing plate 11 in an upper and lower direction and is threadedly connected to the fixing plate 11.

[0014] In order to facilitate the rotation of the clamping stud 13, the lower end of the clamping stud 13 passes through the fixing plate 11 and is provided with a knob.

[0015] In order to facilitate the fixing of the positioning shell 4, the front end of the support rod 2 is provided with a plurality of limiting holes 14 evenly distributed along the left and right directions. A positioning plate 15 located in front of the pinhole 5 is slidably connected inside the positioning shell 4, and a limiting column 16 which can be inserted into the limiting hole 14 is provided at the front end of the positioning plate 15.

[0016] In order to facilitate pressing the positioning plate 15 , a connecting column 17 is provided at the front end of the positioning plate 15 , and a pressing plate 18 is provided at the front end of the connecting column 17 .

[0017] In order to facilitate the resetting of the limiting column 16 , a compression spring located between the pressure plate 18 and the support rod 2 is sleeved on the connecting column 17 .

[0018] In order to facilitate the movement of the connecting column 17, a clearance groove located below the limiting hole 14 is opened at the front end of the support rod 2, and the connecting column 17 is located in the clearance groove.

[0019] In order to enable the piston plate 9 to move up and down, the piston plate 9 is slidably connected to the piston cylinder 8, and a threaded tube 19 slidably connected to the accommodating groove 7 is coaxially provided at the lower end of the piston plate 9. A motor 20 is provided on the bottom surface of the accommodating groove 7, and a power stud 21 threadedly connected to the threaded tube 19 is provided on the output shaft of the motor 20.

[0020] In order to facilitate observation of the liquid in the piston cylinder 8 , an observation groove in the up-down direction and connected to the containing groove 7 is opened at the right end of the main column 1 .

[0021] When the utility model is used, the bed board on which the patient lies during the perfusion is first inserted into the fixing plate 11, and then the knob is turned, the knob drives the pressing stud 13 to rotate, and the pressing stud 13 drives the pressure plate 12 to move upward, and after moving upward for a distance, the pressure plate 12 contacts the lower end surface of the bed board and realizes the upward clamping and fixing of the bed board, and the knob is stopped after the clamping is completed. At this time, due to the self-locking property of the pressing stud 13, the pressure plate 12 does not move downward, preventing the main column 1 from shaking during the perfusion;

[0022] At this time, the main column 1 is fixedly limited, and then the pressure plate 18 is pressed backward, and the pressure plate 18 drives the positioning plate 15 to move backward through the connecting column 17, and the positioning plate 15 drives the limiting column 16 to move backward, and at the same time, the compression spring is squeezed backward. After the limiting column 16 moves backward for a distance, it is pulled out from the limiting hole 14 to release the fixed limit of the positioning shell 4, and then the positioning shell 4 is pushed to the left at this time. After the positioning shell 4 moves to the left for a distance, the sliding positioning shell 4 is stopped when the puncture needle 6 is located just above the puncture point on the patient's abdomen. At this time, the pressure plate 18 is released, and the positioning plate 15 is driven forward by the forward restoring force of the compression spring to move forward, and the positioning plate 15 drives the limiting column 16 to move forward. After moving forward for a distance, the limiting column 16 is inserted into the corresponding limiting hole 14 to realize the fixed limit of the positioning shell 4 again, so as to prevent the positioning shell 4 from moving during irrigation;

[0023] At this time, the fixed limit of the positioning shell 4 is completed, and the left end of the hose 10 is pulled out from above the puncture needle 6 and inserted into the perfusion liquid, the motor 20 is turned on and reversed, and the rotation of the motor 20 drives the power stud 21 to rotate clockwise, and the power stud 21 drives the threaded tube 19 to move downward, and the threaded tube 19 drives the piston plate 9 thereon to move downward in the piston cylinder 8, and the perfusion liquid is gradually sucked into the piston cylinder 8 through the hose 10, and then the motor 20 is turned off to stop driving the piston plate 9 to move. At this time, the left end of the hose 10 is reinserted into the upper end of the puncture needle 6, and then the puncture needle 6 is inserted into the needle hole 5, and the puncture needle 6 is pushed downward. The puncture needle 6 moves downward in the needle hole 5, and after moving a distance, it is inserted into the patient's abdomen and into the amniotic cavity. At this time, the needle hole 5 realizes the fixed limit of the puncture needle 6 to prevent the puncture needle 6 from shaking and causing harm to the patient;

[0024] Then start the motor 20 for forward rotation, and the motor 20 drives the power stud 21 to rotate counterclockwise. The power stud 21 drives the piston plate 9 to move upward through the threaded tube 19. The piston plate 9 moves upward to squeeze the perfusion liquid in the piston cylinder 8 into the puncture needle 6 through the hose 10, and then perfuse it into the patient's amniotic cavity through the puncture needle 6. The motor 20 continues to rotate, and the power stud 21 drives the piston plate 9 to move upward slowly and uniformly, and then the perfusion liquid is slowly and constantly injected into the patient's amniotic cavity. Compared with traditional manual push injection, the speed is uniform. After the perfusion is completed, turn off the motor 20, and then the puncture needle 6 can be withdrawn from the patient's abdomen.

[0025] Compared with the prior art, the beneficial effects of the utility model are: the main body column, positioning shell, needle hole, puncture needle, etc. can be used to realize puncture and perfusion of the patient's amniotic cavity, alleviate the phenomenon of oligohydramnios in the patient, and maintain a constant and uniform perfusion speed throughout the perfusion process to prevent the perfusion speed from being too fast or too slow and causing harm to the patient. At the same time, there is no need for manual support from medical staff, the operation is simple, time-saving and labor-saving, and the structure is simple, the concept is novel, the use is convenient, and the practicability is strong.

Claims

1. An amniotic cavity constant rate perfusion device, comprising a main column (1) with an upper and lower axis, characterized in that: A support rod (2) in the left-right direction is provided at the upper end of the main column (1), a sliding groove (3) penetrating vertically is provided on the support rod (2), a positioning shell (4) is slidably connected in the sliding groove (3), a needle placement hole (5) in the upper end of the positioning shell (4) is provided in the vertical axial direction and penetrating vertically, a puncture needle (6) is detachably connected in the needle placement hole (5), a receiving groove (7) in the vertical axial direction is provided at the upper end of the main column (1), a piston cylinder (8) with an opening facing downward is coaxially provided in the receiving groove (7), a piston plate (9) movable vertically is coaxially provided in the piston cylinder (8), and the upper end of the piston cylinder (8) is connected to the upper end of the puncture needle (6) via a hose (10).

2. The amniotic cavity constant rate perfusion device according to claim 1, characterized in that: A U-shaped fixing plate (11) is provided at the lower end of the main column (1), a pressure plate (12) is slidably connected inside the fixing plate (11), and a clamping stud (13) is provided at the lower end of the pressure plate (12) in an upper and lower axial direction and threadedly connected to the fixing plate (11).

3. The amniotic cavity constant rate perfusion device according to claim 2, characterized in that: The lower end of the clamping stud (13) passes through the fixing plate (11) and is provided with a knob.

4. The amniotic cavity constant rate perfusion device according to claim 1, characterized in that: The front end of the support rod (2) is provided with a plurality of limiting holes (14) evenly distributed in the left-right direction, a positioning plate (15) located in front of the needle hole (5) is slidably connected in the positioning shell (4), and a limiting column (16) that can be inserted into the limiting hole (14) is provided at the front end of the positioning plate (15).

5. The amniotic cavity constant rate perfusion device according to claim 4, characterized in that: A connecting column (17) is provided at the front end of the positioning plate (15), and a pressing plate (18) is provided at the front end of the connecting column (17).

6. The amniotic cavity constant rate perfusion device according to claim 5, characterized in that: The connecting column (17) is provided with a compression spring located between the pressure plate (18) and the support rod (2).

7. The amniotic cavity constant rate perfusion device according to claim 1, characterized in that: The front end of the support rod (2) is provided with a clearance groove located below the limiting hole (14), and the connecting column (17) is located in the clearance groove.

8. The amniotic cavity constant rate perfusion device according to claim 1, characterized in that: The piston plate (9) is slidably connected to the piston cylinder (8), a threaded tube (19) slidably connected to the receiving groove (7) is coaxially provided at the lower end of the piston plate (9), a motor (20) is provided on the bottom surface of the receiving groove (7), and a power stud (21) threadedly connected to the threaded tube (19) is provided on the output shaft of the motor (20).

9. The amniotic cavity constant rate perfusion device according to claim 1, characterized in that: The right end of the main column (1) is provided with an observation groove in the up-down direction and connected to the accommodating groove (7).

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