Gas eliminator and arteriovenous blood collection and transfusion device comprising same

Abstract

The utility model discloses a gas eliminator and an arteriovenous blood collection and transfusion device composed of the gas eliminator. The arteriovenous blood collection and transfusion device is structurally characterized in that a tee joint is connected with three pipelines, a puncture needle is plugged at the top pipe end of an upper port connecting pipeline, the gas eliminator is adhered to the lower end of the puncture needle, and an upper end flow stopping clamp is further arranged at the upper end of the gas eliminator of an upper pipeline. An upper cover is arranged on the side face of the gas eliminator, a gas phase film is arranged at the joint of a cover body and a connecting piece, the connecting piece is connected with the pipelines in a sealed mode and connected to a three-way connector, the lower end of the three-way connector is connected with a left pipeline and a right pipeline, flow stopping clamps are arranged on the left pipeline and the right pipeline, and an inner conical connector and an outer conical connector are arranged at the tail ends of the left pipeline and the right pipeline respectively. According to the utility model, blood collection and transfusion can be realized on one device, and a gas exhaust part is additionally arranged on the device, so that the convenience of blood transfusion is guaranteed, the sterility inside the product is also guaranteed, and the blood transfusion safety of a patient is further guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of medical equipment, specifically relates to a gas eliminator and by its composition's arteriovenous blood sampling and transfusion device. BACKGROUND

[0002] At present, domestic blood collection and processing has been developed more comprehensively, and the related technology has been applied for many years, and the popularization range is relatively wide. In the plasma station, disposable arteriovenous puncture device products are often used for collecting plasma, and the processed blood components also need to be transfused to the human body. When clinical blood donation and blood replacement are needed, the arteriovenous puncture device product is also needed, which is used for blood sampling and infusion of processed blood or physiological saline to patients.

[0003] In view of the above actual application of the disposable arteriovenous puncture device product, the arteriovenous puncture device needs to meet the switching use between blood collection and infusion, and needs to be isolated from the outside world during use to avoid pollution. Because the disposable arteriovenous puncture device product is of a double-path type, the inside of the product needs to be kept sterile. When another pipeline is used for infusion after the blood collection of the patient is completed, there is a certain amount of gas in the pipeline. Because the pipeline is airtight and sterile, other gases in the pipeline cannot be effectively discharged, which easily causes the gas to enter the human body circulation, thereby causing the human body to form a gas embolus, and even causing the death of the human body.

[0004] Because the disposable arteriovenous puncture device has a fast flow rate when transfusing blood, the gas is easily introduced into the human body. Therefore, a device needs to be developed to discharge the gas in the consumables at any time, and also to discharge the gas when the product is switched between different liquid paths. INVENTION CONTENTS

[0005] The utility model discloses a gas eliminator and an arteriovenous blood sampling and transfusion device composed of the same, which overcomes the defects of the prior art and provides a gas eliminator and an arteriovenous blood sampling and transfusion device composed of the same. The utility model increases a gas discharge component in the technical field of switchable liquid paths, thereby guaranteeing the sterility of the product and the safety of infusion.

[0006] The utility model adopts the technical scheme that a kind of gas eliminator, including sealing cover, gas phase membrane 22 and connecting piece 23, sealing cover includes cover body 21 and with its sealed connection sealing plug, sealing cover is provided with gas phase membrane 22 at the connecting place of connecting piece 23, connecting piece 23 is set as left and right two segment communication passages.

[0007] Preferably, the cover body 21 can be opened and closed. When closed, the cover body 21 protrusion is in interference fit with the sealing plug. When opened, the gas is discharged through the gas phase membrane 22.

[0008] Preferably, the gas phase membrane 22 is specifically made of polytetrafluoroethylene material.

[0009] The device for collecting and transfusing blood of artery and vein consisting of a gas eliminator comprises a tee 3, a puncture needle 1 is arranged at the top end of the pipeline of the upper part of the tee 3, a gas eliminator 2 is arranged at the lower end of the puncture needle 1, a connecting piece 23 of the gas eliminator 2 is in sealing connection with the pipeline and is connected to the interface of the tee 3, and left and right pipelines are connected to the lower end of the tee 3.

[0010] Preferably, an upper end flow-stopping clamp 51 is arranged between the puncture needle 1 and the gas eliminator 2.

[0011] Preferably, a first inner conical joint 41 is arranged at the lower end of the left pipeline, a left flow-stopping clamp 52 is further arranged on the left pipeline, a second inner conical joint 42 is arranged at the lower end of the right pipeline, and a right flow-stopping clamp 53 is further arranged on the right pipeline.

[0012] Preferably, all components of the gas eliminator 2 are made of medical materials, and the upper and lower ends of the gas eliminator 2 are in adhesion with the pipeline.

[0013] Preferably, the connection between the puncture needle 1, the gas eliminator 2, the tee 3 and the inner conical joint and the pipeline is sealing connection.

[0014] Compared with the prior art, the device has the beneficial effects that:

[0015] The device can realize blood collection of human body, blood transfusion after plasma collection, physiological saline supplement of human body vein after clinical blood donation and blood transfusion during clinical blood replacement, reduce the workload of medical workers and avoid the harm caused by secondary puncture to patients.

[0016] The device can also be used for discharging gas in consumables and avoiding the harm caused by gas entering the blood circulation of human body. The device not only guarantees the convenience of blood transfusion, but also guarantees the sterility of the product and the safety of blood transfusion of patients. BRIEF DESCRIPTION OF DRAWINGS

[0017] The device will be further described below in combination with the drawings and embodiments.

[0018] Figure 1 FIG. 1 is a structural schematic view of the device for collecting and transfusing blood of artery and vein consisting of a gas eliminator according to the present application,

[0019] Figure 2 FIG. 2 is a structural schematic view of the gas eliminator in the device for collecting and transfusing blood of artery and vein consisting of a gas eliminator according to the present application

[0020] In the drawings: 1 puncture needle, 2 gas eliminator, 21 cover body, 22 gas phase membrane, 23 connecting piece, 3 tee, 41 first inner conical joint, 42 second inner conical joint, 51 upper end flow-stopping clamp, 52 left flow-stopping clamp, 53 right flow-stopping clamp. DETAILED DESCRIPTION

[0021] As used in the specification and claims, certain terminology is used to designate certain components. One of skill in the art will understand that different names can be used by hardware manufacturers to refer to the same or similar components. The specification and claims do not differentiate between the components based on name but rather on functionality. As used throughout the specification and claims, "comprising" is to be read as "comprising, without limitation." "Approximately" refers to within an acceptable error range for the corresponding function, which will be understood by one of skill in the art.

[0022] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "horizontal" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0023] In the present application, unless specifically defined otherwise and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] The drawings are the best embodiment of the gas eliminator and the arteriovenous blood sampling and transfusion device composed of the gas eliminator, and the present application will be further described in detail below in combination with the drawings.

[0025] The specific structure of the arteriovenous blood sampling and transfusion device composed of the gas eliminator is a three-way 3 connecting strip pipeline. The upper port connecting pipeline top pipe end pipe plug has a puncture needle 1, and the lower end of the puncture needle 1 is adhered with a gas eliminator 2. The upper end of the upper pipeline gas eliminator 2 is also provided with an upper end flow stop clamp 51, which can control the opening and closing of the upper pipeline.

[0026] A gas eliminator 2 includes a sealing cover, a gas phase film 22 and a connecting piece 23, the sealing cover includes a cover body 21 and a sealing plug, and the cover body 21 is in interference connection with the sealing plug when closed to seal. The connecting piece 23 is provided with a gas phase film 22 at the connection position of the sealing cover and the connecting piece 23, and the connecting piece 23 is provided as a left and right two-section communication passage, the left passage is higher than the right passage, when liquid flows through, the gas is located in the upper part due to the action of buoyancy, which is convenient for being discharged through the gas phase film.

[0027] The gas phase film 22 is a polytetrafluoroethylene material, and the gas phase film has good sealing property except for the gas permeability. When liquid flows through the gas phase film 22, the gas phase film 22 has good barrier property to the liquid, so that the liquid can only flow along the direction of the liquid flow channel in the component. When gas flows through the gas phase film 22, because the component has certain pressure in front and back, that is, the infusion pressure and the human body blood pressure, and the gas has good flowability, fast flow speed, and low density, etc., the gas is forced to be discharged out of the product through the gas phase film, so that no gas in the liquid flowing through the gas eliminator flows to the human body with the liquid.

[0028] When there is gas in the pipeline and the gas needs to be discharged, the cover 21 is opened to discharge the gas through the gas eliminator 3. When the gas discharge is completed, the cover 22 is closed.

[0029] The left and right pipelines are connected with the lower end of the tee joint 3. The left and right pipelines are respectively provided with a first inner conical joint 41 and a second inner conical joint 42. The first inner conical joint can be connected with a blood collection multi-bag for blood collection. The second inner conical joint can be connected with a blood transfusion device or a transfusion device for infusion of blood components or infusion of saline solution after blood collection.

[0030] The left and right pipelines are respectively provided with a left flow stop clamp 1 and a right flow stop clamp 2 to control the opening and closing of the left and right pipelines, so as to realize the switching of the two pipeline collection and infusion functions.

[0031] The implementation process of the embodiment is as follows:

[0032] The blood collection multi-bag is connected at the first inner conical joint, and the transfusion product is connected at the second inner conical joint. The upper end flow stop clamp 51 and the left flow stop clamp 52 are opened, and the right flow stop clamp 53 is closed. The puncture needle 1 is used for blood vessel puncture of the human body to collect blood. During the blood collection process, the blood flows through the left pipeline to the blood collection multi-bag connected at the first inner conical joint.

[0033] When the blood collection is completed, the left flow stop clamp 52 is closed, the cover 21 of the gas eliminator 2 is opened, and the right flow stop clamp 53 is opened. The gas is discharged, and the transfusion product flows into the tee joint 3 through the right pipeline, flows through the gas eliminator 2, flows into the human body through the puncture needle 1, and the cover 21 is closed when the pipeline is filled with the transfusion product and no gas exists.

[0034] The implementation mode of the utility model is described in detail in combination with the drawings, but the utility model is not limited to the above-mentioned implementation mode, and various changes can be made within the knowledge range possessed by the ordinary skilled in the art without departing from the purpose of the utility model.

Claims

1. A gas eliminator, characterized in that: It includes a sealing cap, a gas phase membrane (22) and a connector (23). The sealing cap includes a cap body (21) and a sealing plug that is sealed to it. A gas phase membrane (22) is provided at the connection between the sealing cap and the connector (23). The connector (23) is configured as a left and right connecting passage.

2. A gas eliminator according to claim 1, characterized in that, The cover (21) can be opened and closed. When closed, the cover (21) protrudes and is pressurized to fit the sealing plug. When opened, the gas is exhausted through the gas phase membrane (22).

3. A gas eliminator according to claim 1, characterized in that, The vapor phase membrane (22) is specifically made of polytetrafluoroethylene.

4. A blood collection and transfusion device for arterial and venous blood collection, comprising a gas eliminator, characterized in that: It includes a tee (3), the top of the upper pipe of the tee (3) is fitted with a puncture needle (1), the lower end of the puncture needle (1) is provided with a gas eliminator (2), the connector (23) of the gas eliminator (2) is sealed to the pipe and connected to the interface of the tee (3), and the lower end of the tee (3) is connected to a left pipe and a right pipe.

5. The arteriovenous blood collection and transfusion device composed of a gas eliminator according to claim 4, characterized in that, An upper flow stop clamp (51) is provided between the puncture needle (1) and the gas eliminator (2).

6. The arteriovenous blood collection and transfusion device composed of a gas eliminator according to claim 4, characterized in that, The lower end of the left pipe is plugged with a first inner conical connector (41), and the left pipe is also equipped with a left flow stop clamp (52). The lower end of the right pipe is plugged with a second inner conical connector (42), and the right pipe is also equipped with a right flow stop clamp (53).

7. The arteriovenous blood collection and transfusion device composed of a gas eliminator according to claim 4, characterized in that, All components of the gas eliminator (2) are made of medical materials, and both the upper and lower ends are bonded to the pipeline.

8. The arteriovenous blood collection and transfusion device composed of a gas eliminator according to claim 4, characterized in that, The connections of the puncture needle (1), gas eliminator (2), tee (3) and inner conical connector to the pipeline are all sealed connections.

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