Pericardiocentesis liquid extraction device

Abstract

The utility model relates to the field of medical instruments, and particularly discloses a pericardium puncture liquid extraction device which comprises a liquid extraction tube, a needle tube connector is installed at one end of the liquid extraction tube, a four-way connector is connected to the end of the needle tube connector, a sealing rod is arranged inside the upper end of the four-way connector, and a sealing lantern ring is connected to the outer side of the sealing rod in a sleeved mode. A liquid through hole is formed in the position, located in the sealing rod, below the sealing lantern ring, a liquid drainage pipe is connected to the outer side of the end, close to the needle pipe connector, of the liquid extraction pipe, a speed control mechanism is installed on the outer side of the liquid drainage pipe, a sealing roller is installed on the inner side wall of the speed control mechanism, and a limiting groove is formed in the inner side of the sealing roller; a limiting deflector rod is installed on the outer side of one end of the speed control mechanism. The whole sealing rod can control a passage between the four-way connector and the liquid pumping pipe, and the sealing roller pair can move in the limiting groove to control a passage between the liquid discharging pipe and the liquid pumping pipe, so that the aim of repeatedly pumping and discharging liquid can be achieved without inserting and pulling the liquid pumping pipe.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a pericardial puncture and fluid extraction device. Background Art

[0002] Pericardial effusion refers to the accumulation of fluid in the pericardial cavity due to infection (such as tuberculosis, suppurative) and non-infection (such as rheumatism, uremic), and is one of the important signs of pericardial disease. The main pathophysiological changes are increased pericardial pressure and restricted cardiac diastole, which lead to obstruction of systemic venous return, reduced ventricular filling and output, and thus cause a series of hemodynamic changes. Pericardial effusion can usually be determined by physical examination and X-ray examination. Pericardial puncture and drainage is the simplest and most effective means to relieve cardiac tamponade, and it is for all acute cardiac tamponade with hemodynamic instability.

[0003] However, the current method of extracting the effusion is mostly to use a syringe in conjunction with a puncture needle. When there is too much pericardial effusion, multiple insertions and withdrawals are required, which can easily lead to contamination of the connector position. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a pericardial puncture and fluid extraction device, which solves the problems mentioned in the above background.

[0005] The utility model provides the following technical scheme: a pericardiocentesis fluid extraction device comprises a fluid extraction tube, one end of the fluid extraction tube is installed with a needle tube joint, the end of the needle tube joint is connected with a four-way joint, a closing rod is arranged inside the upper end of the four-way joint, a closing ring is sleeved on the outer side of the closing rod, a liquid through hole is opened inside the closing rod below the closing ring, an outer wall of the closing rod above the closing ring is opened with an external meshing tooth pattern, a discharge tube is connected to the outer side of one end of the fluid extraction tube located close to the needle tube joint, a speed control mechanism is installed on the outer side of the discharge tube, a closing roller is installed on the inner side wall of the speed control mechanism, a limiting groove is installed on the inner side of the closing roller, and a limiting lever is installed on the outer side of one end of the speed control mechanism.

[0006] As a further solution of the utility model: a bottom sealing plate is installed at the lower end of the four-way joint below the closing rod, and an inner joint thread is opened on the inner side of the upper end of the four-way joint.

[0007] As a further solution of the utility model: a piston rod is installed inside the liquid extraction tube, and a puncture needle is installed on the outer end of the four-way connector.

[0008] As a further solution of the utility model: the four-way connector, the needle tube connector and the liquid extraction tube are all arranged through, and the liquid through hole is connected with the closing rod through.

[0009] As a further solution of the utility model: the limit groove is an L-shaped structure, and the limit lever is movably connected to the speed control mechanism.

[0010] As a further solution of the utility model: the bottom sealing plate is fixedly connected to the four-way joint, and the closing rod is rotatably connected to the inner joint threaded engagement through the outer engagement thread.

[0011] As a further solution of the utility model: the liquid discharge pipe is connected with the liquid extraction pipe.

[0012] As a further solution of the utility model: the puncture needle is snap-connected with the four-way connector.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] When the limit lever is disconnected from the limit position of the closing roller, the closing roller will lose its pressure on the discharge tube. Then the piston rod will be pushed into the inside of the suction tube to push the extracted accumulated liquid into the discharge tube until it is discharged. The suction tube can then be used to extract the accumulated liquid again. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a pericardial puncture and fluid extraction device;

[0016] Figure 2 An exploded view of a needle and tube connector in a pericardiocentesis and fluid extraction device;

[0017] Figure 3 It is a cross-sectional view of a needle-tube joint in a pericardial puncture and fluid extraction device;

[0018] Figure 4 An exploded view of a speed control mechanism in a pericardiocentesis and fluid extraction device.

[0019] In the figure: 1, liquid extraction tube; 2, needle tube connector; 3, puncture needle; 4, piston rod; 5, liquid discharge tube; 6, speed control mechanism; 201, four-way connector; 202, internal connector thread; 203, closing rod; 204, liquid through hole; 205, external meshing tooth pattern; 206, closing ring; 207, bottom sealing plate; 601, closing roller; 602, limit groove; 603, limit lever. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1-4 As shown, the present embodiment provides a pericardial puncture and fluid extraction device, including a fluid extraction tube 1, a needle tube connector 2 is installed at one end of the fluid extraction tube 1, a four-way connector 201 is connected to the end of the needle tube connector 2, the four-way connector 201 and the needle tube connector 2 and the fluid extraction tube 1 are all arranged through, a closing rod 203 is arranged inside the upper end of the four-way connector 201, a closing ring 206 is sleeved on the outer side of the closing rod 203, a liquid through hole 204 is opened inside the closing rod 203 below the closing ring 206, the liquid through hole 204 is connected to the closing rod 203, an outer wall of the closing rod 203 above the closing ring 206 is opened with an outer meshing tooth pattern 205, and the fluid extraction tube 1 A discharge tube 5 is connected to the outer side of one end close to the needle tube connector 2, and a speed control mechanism 6 is installed on the outer side of the discharge tube 5. A closed roller 601 is installed on the inner side wall of the speed control mechanism 6, and a limiting groove 602 is installed on the inner side of the closed roller 601. The limiting groove 602 is an L-shaped structure, and the shorter side end of the limiting groove 602 corresponds to the lower position of the speed control mechanism 6. When the closed roller 601 is moved as a whole to the inner side of the shorter end inside the limiting groove 602, the closed roller 601 as a whole will press the discharge tube 5 to disconnect the passage between it and the suction tube 1, and a limiting lever 603 is installed on the outer side of one end of the speed control mechanism 6, and the limiting lever 603 is movably connected to the speed control mechanism 6.

[0022] like Figure 2-3 As shown, in the present embodiment, a bottom sealing plate 207 is installed at the lower end of the four-way joint 201 below the closing rod 203, the bottom sealing plate 207 is fixedly connected to the four-way joint 201, an inner joint thread 202 is provided on the inner side of the upper end of the four-way joint 201, the closing rod 203 is rotatably connected to the inner joint thread 202 by means of an outer meshing tooth pattern 205, a piston rod 4 is installed inside the liquid extraction tube 1, a discharge tube 5 is through-connected to the liquid extraction tube 1, a puncture needle 3 is installed at the outer end of the four-way joint 201, and the puncture needle 3 is clamped to the four-way joint 201.

[0023] The working principle of the utility model is as follows: when in use, after the puncture needle 3 is buckled as a whole on the end of the four-way joint 201, a torque is first applied to the closing rod 203 by controlling the outer meshing teeth 205 and the inner joint thread 202 to mesh and rotate, and then the closing rod 203 is controlled to move upward as a whole, disconnecting the sealing ring 206 from the inside of the four-way joint 201, and at the same time controlling the liquid through hole 204 to correspond to the passage between the inner joint thread 202 and the liquid extraction tube 1, after the puncture needle 3 is punctured into the position of the pericardium as a whole, the piston rod 4 is pulled as a whole inside the liquid extraction tube 1 to drain the pericardial effusion to the liquid extraction tube 1. After internal extraction, when the inside of the liquid extraction tube 1 is fully extracted, after applying torque to the closing rod 203, the passage between the four-way joint 201 and the liquid extraction tube 1 is controlled to be disconnected, and the limit lever 603 and the speed control mechanism 6 are rotated as a whole to disconnect the limit of the closing roller 601 by the limit lever 603. Then, the closing roller 601 is slid toward the outside inside the limit groove 602 as a whole, and the pressure of the closing roller 601 on the discharge tube 5 is disconnected. Then, the piston rod 4 is pushed into the interior of the liquid extraction tube 1 to push the extracted accumulated liquid into the discharge tube 5 for discharge, and the accumulated liquid can be extracted again using the liquid extraction tube 1.

[0024] 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 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 apparatus that includes 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 apparatus.

[0025] Although the 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. A pericardiocentesis and fluid extraction device, comprising a fluid extraction tube (1), characterized in that: A needle tube connector (2) is installed at one end of the liquid extraction tube (1); the end of the needle tube connector (2) is connected to a four-way connector (201); a closing rod (203) is arranged inside the upper end of the four-way connector (201); a closing ring (206) is sleeved on the outer side of the closing rod (203); a liquid through hole (204) is opened inside the closing rod (203) below the closing ring (206); and a liquid through hole (204) is opened inside the closing rod (203) above the closing ring (206). An outer wall of the closing rod (203) is provided with an outer meshing tooth pattern (205); a liquid discharge tube (5) is connected to the outer side of one end of the liquid extraction tube (1) close to the needle tube connector (2); a speed control mechanism (6) is installed on the outer side of the liquid discharge tube (5); a closing roller (601) is installed on the inner wall of the speed control mechanism (6); a limiting groove (602) is installed on the inner side of the closing roller (601); and a limiting lever (603) is installed on the outer side of one end of the speed control mechanism (6).

2. A pericardiocentesis device according to claim 1, characterized in that: A bottom sealing plate (207) is installed at the lower end of the four-way joint (201) below the closing rod (203), and an inner joint thread (202) is provided on the inner side of the upper end of the four-way joint (201).

3. A pericardiocentesis and fluid extraction device according to claim 1, characterized in that: A piston rod (4) is installed inside the liquid extraction tube (1), and a puncture needle (3) is installed on the outer end of the four-way connector (201).

4. A pericardiocentesis and fluid extraction device according to claim 1, characterized in that: The four-way connector (201) is connected to the needle tube connector (2) and the liquid extraction tube (1), and the liquid through hole (204) is connected to the sealing rod (203).

5. A pericardiocentesis and fluid extraction device according to claim 1, characterized in that: The limiting groove (602) is an L-shaped structure, and the limiting lever (603) is movably connected to the speed control mechanism (6).

6. A pericardiocentesis and fluid extraction device according to claim 2, characterized in that: The bottom sealing plate (207) is fixedly connected to the four-way joint (201), and the closing rod (203) is rotatably connected to the inner joint thread (202) by meshing with the outer meshing thread (205).

7. A pericardiocentesis and fluid extraction device according to claim 1, characterized in that: The liquid discharge pipe (5) is connected to the liquid extraction pipe (1).

8. A pericardiocentesis and fluid extraction device according to claim 3, characterized in that: The puncture needle (3) is snap-connected to the four-way connector (201).

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