Ultrasonic-guided puncture effusion extraction device

Abstract

The invention relates to the technical field of medical instruments, and discloses an ultrasonic-guided puncture effusion extraction device which comprises an injection shell, one end of the outer wall of the injection shell is communicated with a needle, before puncture, a worker presses a suction rod, the suction rod drives a first circular plate to move, the first circular plate drives a piston plate to move, and the piston plate drives a vertical rod to move; a piston plate is moved to the bottom of the inner wall of an injection shell, a large amount of air in the injection shell and a needle head is exhausted, the air in the injection shell and the needle head is prevented from entering the human body, the safety of effusion extraction work is improved, then a worker makes the needle head make contact with the skin of the human body, and a vertical rod drives a plugging block to move before, so that the operation is convenient. The plugging block is moved to the inner wall of the bottom end of the needle head, the opening of the needle head can be plugged, external air is prevented from entering the human body along with the needle head, meanwhile, the external air enters the human body together, and the safety of effusion extraction work is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to an ultrasound-guided puncture and fluid extraction device. Background Art

[0002] Cysts, benign nodules with mainly cystic properties, and body cavity effusions often cause discomfort or health problems. Cysts or benign nodules with mainly cystic properties can be treated with ultrasound-guided percutaneous aspiration and sclerotherapy. Effusions can be treated with ultrasound-guided percutaneous aspiration. For some cysts with large and deep effusions or complex local anatomical structures, operators generally choose syringes for aspiration. Syringes can provide more precise aspiration volumes to ensure that the effusion in the cyst is completely emptied. Compared with other injection hoses, syringes can provide better operational flexibility and accuracy. During the operation, the operator first inserts the puncture needle into the cystic fluid or effusion, then uses a syringe to connect the needle port, and finally draws out the liquid through the syringe. The operator can then continue to inject a sclerosant or flush repeatedly.

[0003] During this process, when the needle comes into contact with the human epidermis, the needle will carry the air near the human epidermis and enter the human body. When the air enters the human body, it will mix with the accumulated fluid, thus affecting the patient's treatment process. Summary of the invention

[0004] The purpose of the present invention is to provide a device for puncturing and aspirating fluid under ultrasound guidance to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a device for puncturing and extracting fluid under ultrasound guidance, comprising an injection shell, one end of the outer wall of the injection shell is connected to a needle, the end of the injection shell away from the needle is fixedly connected to a baffle, and also comprises a puncture and extraction mechanism, the puncture and extraction mechanism comprises a piston plate slidably connected to the inner wall of the injection shell, the top of the piston plate is fixedly connected to a first circular plate, the top of the first circular plate is fixedly connected to a extraction rod, the bottom of the piston plate away from the first circular plate is rotatably connected to a vertical rod, and the outer wall of the vertical rod is provided with a blocking component.

[0007] Furthermore, the blocking assembly includes a second circular plate rotatably connected to the outer wall of one end of the vertical rod, the side wall of the second circular plate contacts the bottom of the inner wall of the injection shell, and a blocking block is fixedly connected to the bottom of one end of the vertical rod away from the piston plate, and the outer wall of the blocking block contacts the inner wall of one end of the needle.

[0008] Furthermore, an extraction assembly is provided on the inner wall of the injection shell, and the extraction assembly includes a sliding ring slidably connected to the inner wall of the injection shell, and four rotating rods are rotatably connected to the bottom of the sliding ring. The end of the rotating rod away from the sliding ring is rotatably connected to a sliding frame, and one end of the sliding frame is fixedly connected to a sliding plate.

[0009] Furthermore, the outer wall of the sliding plate is slidably connected to a square shell, the bottom of the square shell is fixedly connected to the top of the first circular plate, the side of the sliding plate close to the sliding frame is fixedly connected to a spring, one end of the spring is fixedly connected to one side of the inner wall of the square shell.

[0010] Furthermore, the bottom of the square shell is connected to a first circular tube, the bottom end of the first circular tube passes through the second circular plate and extends to the outside of the second circular plate, and the bottom of the square shell near the first circular tube is connected to a second circular tube, the bottom end of the second circular tube passes through the sliding ring and extends to the outside of the sliding ring.

[0011] Furthermore, an auxiliary component is provided on the outer wall of the pulling rod, which includes a rotating plate rotatably connected to the outer wall of the bottom end of the pulling rod, four arc holes are respectively opened around the top of the rotating plate, and a fixed rod is fixedly connected to one end of the sliding frame away from the sliding plate.

[0012] Furthermore, the outer wall of the bottom end of the fixed rod is slidably connected to the inner wall of the arc-shaped hole, four limiting holes are respectively opened around the top of the first circular plate, the bottom end of the limiting hole passes through the piston plate and extends to the outside of the piston plate, and four connecting rods are respectively fixedly connected around the bottom of the rotating plate, and the outer wall of one end of the connecting rod is slidably connected to the inner wall of the limiting hole.

[0013] Furthermore, a circular ring is fixedly connected to the bottom of the connecting rod, a fixing ring is fixedly connected to the bottom of the circular ring, an inner wall of the fixing ring is fixedly connected to the outer wall at the top end of the vertical rod, four flexible elastic rods are fixedly connected to the outer wall of the circular ring, and one end side wall of the flexible elastic rod contacts the outer wall at one end of the second circular tube.

[0014] Furthermore, a vibration assembly is provided at the bottom of the second circular plate, and the second circular plate includes a fixed shell fixedly connected to the bottom of the second circular plate, four conical plates are fixedly connected to the outer wall of the bottom end of the vertical rod, and four conical sliding frames are respectively penetrated and slidably connected to the outer wall of the fixed shell, one end of the conical sliding frame is fixedly connected to an arc plate, and the arc plate is arranged on the outside of the fixed shell, and a plurality of return springs are fixedly connected to the side wall of one end of the conical sliding frame away from the arc plate, and one end of the return spring is fixedly connected to the inner wall of the fixed shell.

[0015] The present invention has the following beneficial effects:

[0016] (1) According to the present invention, before puncture, the staff presses the draw rod, and the draw rod drives the first circular plate to move, and the first circular plate drives the piston plate to move, and the piston plate drives the vertical rod to move, so that the piston plate moves to the bottom of the inner wall of the injection shell, and a large amount of air inside the injection shell and the needle is discharged, so as to prevent the air inside the injection shell and the needle from entering the human body, thereby improving the safety of extracting the accumulated fluid. Then, the staff puts the needle in contact with the human skin, and before that, the vertical rod drives the blocking block to move, so that the blocking block moves to the inner wall of the bottom end of the needle, so as to block the opening of the needle, thereby preventing the outside air from entering the human body along with the needle, thereby further improving the safety of extracting the accumulated fluid.

[0017] (2) According to the present invention, when the needle moves into the human body, the draw rod is pulled, and the draw rod drives the first circular plate to move, and the first circular plate drives the piston plate to move. During the movement of the piston plate inside the injection shell, negative pressure is generated at the bottom end of the inner wall of the injection shell. The negative pressure enters the interior of the needle through the injection shell, and the negative pressure enters the interior of the human body through the needle to extract the accumulated fluid inside the human body. During the movement of the first circular plate, the first circular plate drives the extraction assembly to move together. When it moves to the top end of the inner wall of the injection shell, the sliding ring in the extraction assembly first contacts the baffle plate, and is reversely squeezed by the baffle plate, so that the sliding ring approaches the first circular plate, and the sliding ring moves closer to the first circular plate. The moving ring drives the rotating rod to move, and the rotating rod drives the sliding frame to move. Limited by the square shell, the sliding frame drives the sliding plate to slide along the inner wall of the square shell. During the sliding process of the sliding plate inside the square shell, negative pressure is generated in the area of ​​the square shell close to the first circular tube, and the negative pressure enters the interior of the first circular tube through the square shell. Since the staff places the injection shell vertically, the accumulated liquid entering the injection shell will settle to the bottom of the inner wall of the injection shell, and there will be more air in the area between the accumulated liquid and the second circular plate. The negative pressure can extract the retained air through the first circular tube to prevent the air from affecting the extraction amount of the accumulated liquid, thereby improving the extraction efficiency of the staff.

[0018] (3) According to the present invention, when the sliding frame moves, the sliding frame drives the fixed rod to move. Due to the setting of the arc-shaped hole at the rotating plate, the rotating plate can be slightly rotated during the movement of the fixed rod, and the rotating plate drives the connecting rod to rotate, the connecting rod drives the circular ring to rotate, and the circular ring drives the flexible elastic rod to rotate. During the rotation of the flexible elastic rod, the second circular tube can be squeezed. The material of the second circular tube is elastic and can be deformed. During the movement of the flexible elastic rod, the connecting port of the second circular tube will be blocked. At this time, the gas discharged when the sliding plate moves will be discharged outward through the opening of the square shell, preventing the air flow from entering the liquid accumulation area through the second circular tube, thereby improving the stability of the first circular tube in pumping air. When the first circular tube accidentally pumps the accumulated liquid into the interior of the square shell when pumping air, during the process of the sliding plate moving to the second circular tube area, because the density of the accumulated liquid is greater than that of the air, a small amount of accumulated liquid will enter the interior of the second circular tube along the square shell, and flow back to the interior of a large amount of accumulated liquid along the second circular tube, thereby preventing the accumulated liquid from staying in the interior of the square shell for a long time, thereby improving the protection effect of the device.

[0019] (4) In the present invention, when the circular ring rotates, the circular ring drives the fixed ring to rotate, the fixed ring drives the vertical rod to rotate, the vertical rod drives the conical plate to rotate, and the conical plate contacts the side of the stable conical sliding frame during the rotation, so that the conical sliding frame slides along the inner wall of the fixed shell, and the fixed shell drives the arc plate to move. During the movement of the arc plate, it contacts the inner wall of the needle and generates vibration. After the needle vibrates slightly, small bubbles attached to the inner wall of the needle can float up, and the bubbles move to the upper surface of the accumulated liquid, thereby facilitating the first circular tube to extract air.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the cross-sectional structure of the injection shell of the present invention;

[0023] Figure 2 It is a schematic diagram of the side structure of the first circular plate of the present invention;

[0024] Figure 3 It is a schematic diagram of the cross-sectional structure of the rotating plate of the present invention;

[0025] Figure 4This is a schematic diagram of the cross-sectional structure of the needle of the present invention;

[0026] Figure 5 This is a schematic diagram of the explosion structure of the piston plate of the present invention;

[0027] Figure 6 For the present invention Figure 2 A magnified view of middle;

[0028] Figure 7 For the present invention Figure 3 Enlarged view of middle B;

[0029] Figure 8 For the present invention Figure 5 Enlarged view of C in the middle.

[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0031] In the figure: 1, injection shell; 2, needle; 3, baffle; 4, puncture extraction mechanism; 41, piston plate; 42, first circular plate; 43, extraction rod; 44, vertical rod; 45, blocking assembly; 46, extraction assembly; 47, auxiliary assembly; 48, vibration assembly; 451, second circular plate; 452, blocking block; 461, sliding ring; 462, rotating rod; 463, sliding frame; 464, sliding plate; 4 65. square shell; 466. spring; 467. first round tube; 468. second round tube; 471. rotating plate; 472. fixing rod; 473. arc hole; 474. connecting rod; 475. circular ring; 476. fixing ring; 477. flexible elastic rod; 478. limiting hole; 481. fixed shell; 482. conical plate; 483. conical sliding frame; 484. arc plate; 485. return spring. DETAILED DESCRIPTION

[0032] 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.

[0033] Example 1, please refer to Figure 1 - Figure 8 As shown, the present invention is an ultrasound-guided puncture and fluid extraction device, comprising an injection shell 1, one end of the outer wall of the injection shell 1 is connected to a needle 2, and the end of the injection shell 1 away from the needle 2 is fixedly connected to a baffle 3, and further comprising;

[0034] The puncture and extraction mechanism 4 includes a piston plate 41 slidably connected to the inner wall of the injection shell 1, a first circular plate 42 is fixedly connected to the top of the piston plate 41, a withdrawal rod 43 is fixedly connected to the top of the first circular plate 42, and the piston plate 41 is rotatably connected to the vertical rod 44 away from the bottom of the first circular plate 42. Before puncture, the staff presses the withdrawal rod 43, the withdrawal rod 43 drives the first circular plate 42 to move, the first circular plate 42 drives the piston plate 41 to move, the piston plate 41 drives the vertical rod 44 to move, so that the piston plate 41 moves to the bottom of the inner wall of the injection shell 1, and a large amount of air inside the injection shell 1 and the needle 2 is discharged, and the outer wall of the vertical rod 44 is provided with a blocking component 45.

[0035] The sealing assembly 45 includes a second circular plate 451 rotatably connected to the outer wall of one end of the vertical rod 44, the side wall of the second circular plate 451 contacts the bottom of the inner wall of the injection shell 1, and a sealing block 452 is fixedly connected to the bottom of the end of the vertical rod 44 away from the piston plate 41, and the outer wall of the sealing block 452 contacts the inner wall of one end of the needle 2. Before the staff brings the needle 2 into contact with the human skin, the vertical rod 44 drives the sealing block 452 to move, so that the sealing block 452 moves to the inner wall of the bottom end of the needle 2, which can block the opening of the needle 2 to prevent the outside air from entering the human body along with the needle 2 and entering the human body together, thereby further improving the safety of extracting the accumulated fluid.

[0036] In embodiment 2, an extraction component 46 is provided on the inner wall of the injection shell 1, and the extraction component 46 includes a sliding ring 461 slidably connected to the inner wall of the injection shell 1, and four rotating rods 462 are rotatably connected around the bottom of the sliding ring 461, and one end of the rotating rod 462 away from the sliding ring 461 is rotatably connected to a sliding frame 463, and one end of the sliding frame 463 is fixedly connected to a sliding plate 464.

[0037] The outer wall of the sliding plate 464 is slidably connected to a square shell 465, the bottom of the square shell 465 is fixedly connected to the top of the first circular plate 42, and the side of the sliding plate 464 close to the sliding frame 463 is fixedly connected to a spring 466, one end of the spring 466 is fixedly connected to one side of the inner wall of the square shell 465.

[0038] The bottom of the square shell 465 is connected to the first circular tube 467. When the first circular plate 42 moves, the first circular plate 42 drives the extraction component 46 to move together. When it moves to the top of the inner wall of the injection shell 1, the sliding ring 461 in the extraction component 46 will first contact the baffle 3, and be squeezed in the reverse direction by the baffle 3, so that the sliding ring 461 approaches the first circular plate 42. The sliding ring 461 drives the rotating rod 462 to move, and the rotating rod 462 drives the sliding frame 463 to move. The sliding frame 463 is limited by the square shell 465 and drives the sliding plate 464 to slide along the inner wall of the square shell 465. When the sliding plate 464 slides inside the square shell 465, negative pressure is generated in the area of ​​the square shell 465 close to the first circular tube 467. The negative pressure enters the interior of the first circular tube 467 through the square shell 465. The staff places the injection shell 1 vertically. At this time, the accumulated liquid entering the injection shell 1 will settle to the bottom of the inner wall of the injection shell 1, and there will be more air in the area between the accumulated liquid and the second circular plate 451. The negative pressure can extract the retained air through the first circular tube 467 to prevent the air from affecting the extraction amount of the accumulated liquid, thereby improving the extraction efficiency of the staff. The bottom end of the first circular tube 467 passes through the second circular plate 451 and extends to the outside of the second circular plate 451. The square shell 465 is connected to the second circular tube 468 near the bottom of the first circular tube 467. The second circular tube 468 is usually called a one-way discharge pipe or a discharge pipe. It is designed to only allow liquid or gas to flow in one direction and cannot absorb the accumulated liquid in the reverse direction. The bottom end of the second circular tube 468 passes through the sliding ring 461 and extends to the outside of the sliding ring 461.

[0039] An auxiliary component 47 is provided on the outer wall of the pulling rod 43, and the auxiliary component 47 includes a rotating plate 471 rotatably connected to the outer wall of the bottom end of the pulling rod 43, and four arc holes 473 are respectively opened around the top of the rotating plate 471. A fixed rod 472 is fixedly connected to one end of the sliding frame 463 away from the sliding plate 464.

[0040] The outer wall of the bottom end of the fixed rod 472 is slidably connected to the inner wall of the arc hole 473, and four limiting holes 478 are respectively opened around the top of the first circular plate 42. The bottom ends of the limiting holes 478 pass through the piston plate 41 and extend to the outside of the piston plate 41. Four connecting rods 474 are fixedly connected around the bottom of the rotating plate 471, and the outer wall of one end of the connecting rod 474 is slidably connected to the inner wall of the limiting hole 478.

[0041] The bottom of the connecting rod 474 is fixedly connected with a circular ring 475, and the bottom of the circular ring 475 is fixedly connected with a fixing ring 476. The inner wall of the fixing ring 476 is fixedly connected to the outer wall of the top of the vertical rod 44. Four flexible elastic rods 477 are fixedly connected to the outer wall of the circular ring 475. The side wall of one end of the flexible elastic rod 477 contacts the outer wall of one end of the second circular tube 468. When the sliding frame 463 moves, the sliding frame 463 drives the fixing rod 472 to move. Due to the setting of the arc hole 473 at the rotating plate 471, the fixing rod 472 can make the rotating plate 471 rotate slightly during the movement of the fixing rod 472, and the rotating plate 471 drives the fixing rod 472 to rotate slightly. The movable connecting rod 474 rotates, the connecting rod 474 drives the ring 475 to rotate, the ring 475 drives the flexible elastic rod 477 to rotate, and the flexible elastic rod 477 can squeeze the second circular tube 468 during rotation. The material of the second circular tube 468 is elastic and can be deformed. During the movement of the flexible elastic rod 477, the connecting port of the second circular tube 468 will be blocked. At this time, the gas discharged when the sliding plate 464 moves will be discharged outward through the opening of the square shell 465, preventing the airflow from entering the liquid accumulation area through the second circular tube 468, thereby improving the stability of the first circular tube 467 in pumping air.

[0042] A vibration assembly 48 is provided at the bottom of the second circular plate 451. The second circular plate 451 includes a fixed shell 481 fixedly connected to the bottom of the second circular plate 451. Four conical plates 482 are fixedly connected to the outer wall of the bottom end of the vertical rod 44. Four conical sliding frames 483 are respectively penetrated and slidably connected to the outer wall of the fixed shell 481. One end of the conical sliding frame 483 is fixedly connected to an arc plate 484, and the arc plate 484 is arranged on the outside of the fixed shell 481. A plurality of return springs 485 are fixedly connected to the side wall of one end of the conical sliding frame 483 away from the arc plate 484. One end of the return spring 485 is fixedly connected to the inner wall of the fixed shell 481. When the ring 475 rotates, The circular ring 475 drives the fixed ring 476 to rotate, the fixed ring 476 drives the vertical rod 44 to rotate, the vertical rod 44 drives the conical plate 482 to rotate, and the conical plate 482 contacts the side of the stable conical sliding frame 483 during the rotation, so that the conical sliding frame 483 slides along the inner wall of the fixed shell 481, and the fixed shell 481 drives the arc plate 484 to move. The arc plate 484 contacts the inner wall of the needle 2 during the movement, generating vibration. After the needle 2 vibrates slightly, the small bubbles attached to the inner wall of the needle 2 can float up, and the bubbles move to the upper surface of the effusion, thereby facilitating the first circular tube 467 to extract air.

[0043] During use, before puncture, the staff presses the withdrawal rod 43, and the withdrawal rod 43 drives the first circular plate 42 to move, and the first circular plate 42 drives the piston plate 41 to move, and the piston plate 41 drives the vertical rod 44 to move, so that the piston plate 41 moves to the bottom of the inner wall of the injection shell 1, and a large amount of air inside the injection shell 1 and the needle 2 is discharged, so as to prevent the air inside the injection shell 1 and the needle 2 from entering the human body, thereby improving the safety of extracting the accumulated fluid. Then the staff brings the needle 2 into contact with the human skin. Before this, the vertical rod 44 drives the blocking block 452 to move, so that the blocking block 452 moves to the inner wall of the bottom end of the needle 2, which can block the opening of the needle 2, and prevent the outside air from entering the human body along with the needle 2, thereby further improving the safety of extracting the accumulated fluid.

[0044] When the needle 2 moves into the human body, the draw rod 43 is pulled, and the draw rod 43 drives the first circular plate 42 to move, and the first circular plate 42 drives the piston plate 41 to move. During the movement of the piston plate 41 inside the injection shell 1, negative pressure can be generated at the bottom end of the inner wall of the injection shell 1, and the negative pressure enters the inside of the needle 2 through the injection shell 1, and the negative pressure enters the inside of the human body through the needle 2 to extract the accumulated fluid inside the human body. When the first circular plate 42 moves, the first circular plate 42 drives the extraction component 46 to move together. When it moves to the top of the inner wall of the injection shell 1, the sliding ring 461 in the extraction component 46 will first contact the baffle 3, and be reversely squeezed by the baffle 3, so that the sliding ring 461 approaches the first circular plate 42, and the sliding ring 461 drives the rotating rod 4 62 moves, the rotating rod 462 drives the sliding frame 463 to move, and is limited by the square shell 465, and the sliding frame 463 drives the sliding plate 464 to slide along the inner wall of the square shell 465. During the sliding process of the sliding plate 464 inside the square shell 465, negative pressure is generated in the area of ​​the square shell 465 close to the first circular tube 467, and the negative pressure enters the interior of the first circular tube 467 through the square shell 465. Since the staff places the injection shell 1 vertically, the accumulated liquid entering the injection shell 1 at this time will settle to the bottom of the inner wall of the injection shell 1, and there will be more air in the area between the accumulated liquid and the second circular plate 451. The negative pressure can extract the stagnant air through the first circular tube 467 to prevent the air from affecting the extraction amount of the accumulated liquid, thereby improving the extraction efficiency of the staff.

[0045] When the sliding frame 463 moves, the sliding frame 463 drives the fixed rod 472 to move. Due to the setting of the arc hole 473 at the rotating plate 471, the fixed rod 472 can make the rotating plate 471 rotate slightly during the movement. The rotating plate 471 drives the connecting rod 474 to rotate, and the connecting rod 474 drives the ring 475 to rotate. The ring 475 drives the flexible elastic rod 477 to rotate. During the rotation of the flexible elastic rod 477, the second circular tube 468 can be squeezed. The material of the second circular tube 468 is elastic and can be deformed. During the movement of the flexible elastic rod 477, the connecting port of the second circular tube 468 is blocked. At this time, the sliding frame 463 moves. When plate 464 moves, the exhausted gas will be discharged outward through the opening of square shell 465, preventing the airflow from entering the area of ​​​​liquid accumulation through second circular tube 468, and the side improves the stability of air extraction by first circular tube 467. When the first circular tube 467 accidentally draws the accumulated liquid into the interior of square shell 465 when extracting air, during the process of sliding plate 464 moving to the area of ​​​​the second circular tube 468, because the density of the accumulated liquid is greater than the density of air, a small amount of accumulated liquid will enter the interior of the second circular tube 468 along the square shell 465, and flow back along the second circular tube 468 to the interior of a large amount of accumulated liquid, thereby preventing the accumulated liquid from staying in the interior of square shell 465 for a long time, thereby improving the protection effect of the device.

[0046] When the circular ring 475 rotates, the circular ring 475 drives the fixed ring 476 to rotate, the fixed ring 476 drives the vertical rod 44 to rotate, and the vertical rod 44 drives the conical plate 482 to rotate. During the rotation of the conical plate 482, it contacts the side of the stable conical sliding frame 483, so that the conical sliding frame 483 slides along the inner wall of the fixed shell 481, and the fixed shell 481 drives the arc plate 484 to move. During the movement of the arc plate 484, it contacts the inner wall of the needle 2 to generate vibration. After the needle 2 vibrates slightly, the small bubbles attached to the inner wall of the needle 2 can float up, and the bubbles move to the upper surface of the effusion, thereby facilitating the first circular tube 467 to extract air.

[0047] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An ultrasound-guided puncture and fluid extraction device, comprising an injection shell (1), characterized in that: One end of the outer wall of the injection shell (1) is connected to the needle (2), and one end of the injection shell (1) away from the needle (2) is fixedly connected to a baffle (3), and further comprises: The puncture and extraction mechanism (4) comprises a piston plate (41) slidably connected to the inner wall of the injection shell (1), the top of the piston plate (41) is fixedly connected to a first circular plate (42), the top of the first circular plate (42) is fixedly connected to a withdrawal rod (43), the piston plate (41) is rotatably connected to a vertical rod (44) away from the bottom of the first circular plate (42), and the outer wall of the vertical rod (44) is provided with a blocking component (45).

2. The ultrasound-guided puncture and fluid extraction device according to claim 1, characterized in that: The blocking assembly (45) comprises a second circular plate (451) rotatably connected to the outer wall of one end of the vertical rod (44), the side wall of the second circular plate (451) contacts the bottom of the inner wall of the injection shell (1), and a blocking block (452) is fixedly connected to the bottom of one end of the vertical rod (44) away from the piston plate (41), and the outer wall of the blocking block (452) contacts the inner wall of one end of the needle (2).

3. The ultrasound-guided puncture and fluid extraction device according to claim 2, characterized in that: The inner wall of the injection shell (1) is provided with an extraction component (46), and the extraction component (46) includes a sliding ring (461) slidably connected to the inner wall of the injection shell (1), and four rotating rods (462) are rotatably connected around the bottom of the sliding ring (461), and one end of the rotating rod (462) away from the sliding ring (461) is rotatably connected to a sliding frame (463), and one end of the sliding frame (463) is fixedly connected to a sliding plate (464).

4. The ultrasound-guided puncture and fluid extraction device according to claim 3, characterized in that: The outer wall of the sliding plate (464) is slidably connected to a square shell (465), the bottom of the square shell (465) is fixedly connected to the top of the first circular plate (42), and a spring (466) is fixedly connected to one side of the sliding plate (464) close to the sliding frame (463), and one end of the spring (466) is fixedly connected to one side of the inner wall of the square shell (465).

5. The ultrasound-guided puncture and fluid extraction device according to claim 4, characterized in that: The bottom of the square shell (465) is connected to a first circular tube (467), the bottom end of the first circular tube (467) passes through the second circular plate (451) and extends to the outside of the second circular plate (451), and the bottom of the square shell (465) near the first circular tube (467) is connected to a second circular tube (468), the bottom end of the second circular tube (468) passes through the sliding ring (461) and extends to the outside of the sliding ring (461).

6. The ultrasound-guided puncture and fluid extraction device according to claim 5, characterized in that: The outer wall of the draw rod (43) is provided with an auxiliary component (47), and the auxiliary component (47) includes a rotating plate (471) rotatably connected to the outer wall of the bottom end of the draw rod (43), and four arc-shaped holes (473) are respectively opened around the top of the rotating plate (471), and one end of the sliding frame (463) away from the sliding plate (464) is fixedly connected to a fixing rod (472).

7. The ultrasound-guided puncture and fluid extraction device according to claim 6, characterized in that: The outer wall of the bottom end of the fixed rod (472) is slidably connected to the inner wall of the arc-shaped hole (473); four limiting holes (478) are respectively opened around the top of the first circular plate (42); the bottom ends of the limiting holes (478) penetrate the piston plate (41) and extend to the outside of the piston plate (41); four connecting rods (474) are respectively fixedly connected around the bottom of the rotating plate (471); the outer wall of one end of the connecting rod (474) is slidably connected to the inner wall of the limiting hole (478).

8. The ultrasound-guided puncture and fluid extraction device according to claim 7, characterized in that: The bottom of the connecting rod (474) is fixedly connected to a circular ring (475), the bottom of the circular ring (475) is fixedly connected to a fixing ring (476), the inner wall of the fixing ring (476) is fixedly connected to the outer wall of the top end of the vertical rod (44), and four flexible elastic rods (477) are fixedly connected to the outer wall of the circular ring (475) around each other, and the side wall of one end of the flexible elastic rod (477) contacts the outer wall of one end of the second circular tube (468).

9. The ultrasound-guided puncture and fluid extraction device according to claim 8, characterized in that: A vibration assembly (48) is provided at the bottom of the second circular plate (451). The second circular plate (451) includes a fixed shell (481) fixedly connected to the bottom of the second circular plate (451). Four conical plates (482) are fixedly connected to the outer wall of the bottom end of the vertical rod (44) respectively. Four conical sliding frames (483) are respectively penetrated and slidably connected to the outer wall of the fixed shell (481). One end of the conical sliding frame (483) is fixedly connected to an arc plate (484), and the arc plate (484) is arranged outside the fixed shell (481). A plurality of return springs (485) are fixedly connected to the side wall of one end of the conical sliding frame (483) away from the arc plate (484), and one end of the return spring (485) is fixedly connected to the inner wall of the fixed shell (481).

Images