Bloodletting device

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a bloodletting device. In the bloodletting device, one end of a drainage tube is connected with a puncture needle through a three-way connector, the other end of the drainage tube is communicated with a drainage bag, and a peristaltic pump is sleeved with the middle of the drainage tube; the puncture needle is punctured into a vein of a patient, the pump head of the peristaltic pump is used for extruding the drainage tube to generate negative pressure in the drainage tube, blood is pumped out of the vein at a constant speed, the stable bloodletting effect is achieved, it is guaranteed that one-time bloodletting amount is sufficient, and the ideal treatment effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical apparatus and instruments, especially relates to a blood letting device. BACKGROUND

[0002] Polycythemia is a disease that the number of red blood cells in blood is abnormally increased, which is mainly divided into primary and secondary types.

[0003] Venous blood letting treatment is one of the effective treatment methods of polycythemia, and for primary and secondary polycythemia caused by different reasons, when hemoglobin is increased to a certain degree, venous blood letting device treatment combined with drug treatment is needed to control the progress of the patient's condition.

[0004] At present, venous blood letting treatment is carried out by venous blood letting device for patients, and due to the thick blood of patients, low venous pressure and other factors, the existing venous blood letting device is difficult to control the blood letting speed, and there is a situation of insufficient blood letting amount at one time, which is difficult to achieve ideal treatment effect. UTILITY MODEL CONTENTS

[0005] The utility model provides a blood letting device to solve the technical problem that the venous blood letting device is difficult to control the blood letting speed in the prior art, and there is a situation of insufficient blood letting amount at one time, which is difficult to achieve ideal treatment effect.

[0006] The utility model realizes the following technical scheme:

[0007] A blood letting device, comprising a puncture needle, a needleless connector, a drainage tube, a pumping device and a drainage bag;

[0008] The pumping device comprises a peristaltic pump and a controller, and the peristaltic pump is electrically connected with the controller, and the opening and closing and rotating speed of the peristaltic pump are controlled through the controller;

[0009] One end of the drainage tube is provided with a three-way connector, the drainage tube is communicated with the puncture needle and the needleless connector through the three-way connector, a first clamping device is arranged on the drainage tube, and the first clamping device is arranged close to the three-way connector; the other end of the drainage tube is communicated with the drainage bag; and the middle part of the drainage tube is sleeved on the peristaltic pump.

[0010] In order to better realize the utility model, the needleless connector and the three-way connector are provided with an exhaust device in the above structure.

[0011] In order to better realize the utility model, the drainage tube comprises a main tube and a sample branch tube in the above structure.

[0012] Two ends of the main body tube are communicated with a three-way joint and the drainage bag respectively, and the first clamping device is arranged on the main body tube;

[0013] One end of the sample holding branch pipe is provided with a sample holding bag, the other end of the sample holding branch pipe is connected with the main body tube, and the main body tube is provided with a second clamping device.

[0014] In order to better realize the utility model, further optimization is made to the above structure, the controller comprises a shell, a control unit, a display screen and an operation panel;

[0015] The peristaltic pump is arranged in the shell, and a pump head of the peristaltic pump extends to the outside of the shell;

[0016] The display screen and the operation panel are both arranged on the shell;

[0017] The control unit is arranged in the shell, and the control unit is electrically connected with the display screen, the operation panel and the peristaltic pump.

[0018] In order to better realize the utility model, further optimization is made to the above structure, the single-circle displacement of the peristaltic pump is 1ml.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] In the blood letting device, one end of the drainage tube is connected with the puncture needle through the three-way joint, the other end of the drainage tube is communicated with the drainage bag, and the middle part of the drainage tube is sleeved on the peristaltic pump; the puncture needle is pierced into the venous blood vessel of the patient, the pump head of the peristaltic pump extrudes the drainage tube to generate negative pressure in the drainage tube, the blood is uniformly extracted from the venous blood vessel, the effect of stable blood letting is realized, the blood letting amount is sufficient at one time, and the ideal treatment effect is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without paying creative labor.

[0022] Figure 1 It is a structure schematic view of a blood letting device.

[0023] In the drawing:

[0024] 1, puncture needle;

[0025] 2, needleless connector; 21, exhaust device;

[0026] 3. Drainage tube; 31. Main tube; 32. Sample retention branch tube;

[0027] 41. Peristaltic pump; 42. Controller;

[0028] 5. Drainage bag;

[0029] 6. T-connector;

[0030] 71. First clamping device; 72. Second clamping device;

[0031] 8. Sample retention bag. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] In the embodiments of this application, such as Figure 1 As shown, the bloodletting device includes a puncture needle 1, a needleless connector 2, a drainage tube 3, a pumping device, and a drainage bag 5; wherein,

[0036] The pumping device comprises a peristaltic pump 41 and a controller 42, the peristaltic pump 41 is electrically connected with the controller 42, and the controller 42 controls the start-stop and rotating speed of the peristaltic pump 41;

[0037] One end of the drainage tube 3 is provided with a three-way joint 6, the drainage tube 3 is communicated with the puncture needle 1 and the needleless joint 2 through the three-way joint 6, the drainage tube 3 is provided with a first clamping device 71, and the first clamping device 71 is arranged close to the three-way joint 6; the other end of the drainage tube 3 is communicated with the drainage bag 5; and the middle part of the drainage tube 3 is sleeved on the peristaltic pump 41.

[0038] When the bloodletting device is used, medical staff can use the puncture needle 1 to puncture the patient's vein, that is, the puncture needle 1 is inserted into the patient's vein;

[0039] After the puncture is completed and blood return is found in the drainage tube 3, the peristaltic pump 41 can be started through the controller 42, the pump head of the peristaltic pump 41 extrudes the drainage tube 3 to generate negative pressure in the drainage tube 3, the blood in the vein flows into the drainage bag 5 under the action of the negative pressure, until the bloodletting amount reaches the preset amount, the peristaltic pump 41 is closed through the controller 42, and the puncture needle 1 is removed from the patient's vein, and the bloodletting operation is completed.

[0040] During the whole bloodletting process, the pump head of the peristaltic pump 41 extrudes the drainage tube 3 to generate negative pressure in the drainage tube 3, and the blood is uniformly extracted from the vein, so that the effect of stable bloodletting is realized, the bloodletting amount is sufficient at one time, and the ideal treatment effect is achieved.

[0041] It is worth noting that the peristaltic pump 41 is a device for conveying fluid (blood) by extruding a flexible hose (drainage tube 3) through a roller (pump head), and the fluid only contacts the hose, which is completely isolated from pollution, and is particularly suitable for conveying corrosive, viscous or sterile liquids. In the embodiment, the peristaltic pump 41 extrudes the drainage tube 3 to generate negative pressure in the drainage tube 3, and the blood is uniformly extracted from the vein, so as to realize the control of the bloodletting speed, and at the same time, avoid the situation that the bloodletting speed is not easy to control and the bloodletting amount is insufficient at one time due to the thick blood.

[0042] Of course, when it is necessary to inject liquid medicine into the patient's vein, the peristaltic pump 41 can be closed through the controller 42, the drainage tube 3 is clamped by the first clamping device 71, and then the syringe containing the liquid medicine is inserted into the needleless joint 2, so that the liquid medicine is injected into the patient's vein.

[0043] In some embodiments, the controller 42 described above comprises a shell, a control unit, a display screen and an operation panel; wherein,

[0044] The peristaltic pump 41 is arranged in the shell, and the pump head of the peristaltic pump 41 extends to the outside of the shell;

[0045] The display screen and the operation panel are arranged on the shell;

[0046] The control unit is arranged in the shell, and the control unit is electrically connected with the display screen, the operation panel and the peristaltic pump 41;

[0047] The medical staff can start or stop the peristaltic pump 41 through the operation panel, and can also adjust the rotating speed of the peristaltic pump 41 through the control panel, so as to better control the blood extraction amount and the blood extraction speed, and simplify the blood extraction operation; the display screen can display the working time and the rotating circle speed of the peristaltic pump 41, so as to facilitate the medical staff to understand the blood extraction state;

[0048] In addition, the working time of the peristaltic pump 41 can also be controlled through the operation panel, and after the working time of the peristaltic pump 41 reaches the set time, the control unit will automatically stop the peristaltic pump 41, so as to realize the automatic blood extraction operation.

[0049] It is worth noting that the control unit is a PLC control unit, and the PLC control unit (programmable logic controller) is an industrial automatic control device taking a microprocessor as a core, which realizes the functions of logic, sequence, timing, counting and arithmetic operation through programming, and is widely used in the fields of automobile manufacturing, energy and chemical industry, and mechanical processing.

[0050] Preferably, the single-circle displacement of the peristaltic pump 41 is 1ml, and the medical staff can determine the total blood extraction amount through the rotating circle speed of the peristaltic pump 41 recorded on the display, so as to make the use of the blood extraction device more convenient.

[0051] In some embodiments, an exhaust device 21 is arranged between the needleless connector 2 and the three-way connector 6, and when air enters the drainage tube 3, the air in the drainage tube 3 can be exhausted through the exhaust device 21, so as to avoid the air entering the venous blood vessels of the patient and causing the patient to be uncomfortable, thereby ensuring the safety of the blood extraction device in use.

[0052] In some embodiments, the drainage tube 3 comprises a main tube 31 and a sample branch tube 32;

[0053] The two ends of the main tube 31 are respectively communicated with the three-way connector 6 and the drainage bag 5, and the first clamping device 71 is arranged on the main tube 31;

[0054] One end of the sample branch tube 32 is provided with a sample bag 8, the other end of the sample branch tube 32 is connected with the main tube 31, and the main tube 31 is provided with a second clamping device 72; the first clamping device 71 is located between the pump head of the peristaltic pump 41 and the sample branch tube 32;

[0055] When blood is to be drawn, the medical staff opens the first clamping device 71 and closes the second clamping device 72, that is, the second clamping device 72 clamps the sample branch pipe 32, so that the blood can flow smoothly through the main pipe 31 into the drainage bag 5;

[0056] When blood sampling is needed, the medical staff opens the second clamping device 72 and closes the first clamping device 71, that is, the first clamping device 71 clamps the main pipe 31, so that the blood can enter the sample bag 8 through the sample branch pipe 32, and the blood sampling is completed.

[0057] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A phlebotomy device, characterized by: The device comprises a puncture needle (1), a needleless connector (2), a drainage tube (3), a pumping device and a drainage bag (5); The pumping device comprises a peristaltic pump (41) and a controller (42), the peristaltic pump (41) is electrically connected with the controller (42), and the controller (42) is used for controlling the opening and closing and rotating speed of the peristaltic pump (41); One end of the drainage tube (3) is provided with a three-way connector (6), the drainage tube (3) is communicated with the puncture needle (1) and the needleless connector (2) through the three-way connector (6), the drainage tube (3) is provided with a first clamping device (71), and the first clamping device (71) is arranged close to the three-way connector (6); the other end of the drainage tube (3) is communicated with the drainage bag (5); and the middle part of the drainage tube (3) is sleeved on the peristaltic pump (41).

2. The phlebotomy device of claim 1, wherein: An exhaust device (21) is arranged between the needleless connector (2) and the three-way connector (6).

3. The phlebotomy device of claim 1, wherein: The drainage tube (3) comprises a main tube (31) and a sample retaining branch tube (32); Two ends of the main tube (31) are communicated with the three-way connector (6) and the drainage bag (5) respectively, and the first clamping device (71) is arranged on the main tube (31); One end of the sample retaining branch tube (32) is provided with a sample retaining bag (8), the other end of the sample retaining branch tube (32) is connected with the main tube (31), and the main tube (31) is provided with a second clamping device (72).

4. The phlebotomy device of claim 1, wherein: The controller (42) comprises a shell, a control unit, a display screen and an operation panel; The peristaltic pump (41) is arranged in the shell, and a pump head of the peristaltic pump (41) extends to the outside of the shell; The display screen and the operation panel are arranged on the shell; The control unit is arranged in the shell, and the control unit is electrically connected with the display screen, the operation panel and the peristaltic pump (41).

5. The phlebotomy device of claim 1, wherein: The single-circle displacement of the peristaltic pump (41) is 1ml.

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