CN218458115U - Internal fistula needle blood collection device - Google Patents

Abstract

The utility model discloses a fistula needle blood collection device, which comprises a fistula needle, a blood collection needle and a connection joint, and the two ends of the connection joint are respectively connected with the internal fistula needle and the blood collection needle; The connectors at both ends and the sterile pressure measuring head arranged on the side wall of the connecting tube; the connecting heads at both ends of the connecting tube are respectively screw connected with the tail end joint of the internal fistula needle and the tail end of the blood collection needle; the sterile pressure measuring head includes A tube shell communicated with the connecting pipe, a sterile pressure measuring membrane installed in the tube shell, and a screw outer cover connected to the outer end of the tube shell. The utility model realizes the connection of the internal fistula needle and the blood collection needle through the connection joint to form a closed blood collection device, which can avoid the problem of blood sample exposure and pollution during blood collection operation; Evacuate and depressurize the tube to realize zero-pressure blood collection; unscrew the connecting joint and the end joint of the internal fistula needle, and normal dialysis operation can be performed again.

Description

Internal fistula needle blood collection device

technical field

The utility model relates to a fistula needle blood collection device, which belongs to the field of medical equipment.

Background technique

The internal fistula needle is mainly used for hemodialysis treatment. Before the dialysis treatment, it is necessary to puncture the patient with an empty needle before the anticoagulant is used for testing. When using the internal fistula needle to collect blood, the general operation is to open the needle tail cap after the internal fistula needle is punctured and put the blood into the blood collection test tube, or draw blood through the needle tail of the injection and then inject it into the blood collection test tube. Aseptic technique, there is the possibility of blood exposure contamination, there are deficiencies.

In order to solve the above-mentioned shortcomings, some internal fistula needle blood collection devices have also appeared in the prior art, such as patent CN202022643463. The blood collection device has the problem that the air in the needle and the connecting tube cannot be discharged outside, and the venous blood is not easy to flow out smoothly due to the pressure in the tube, and there is also a hidden danger of air entering the blood collection test tube to cause contamination of the blood sample. For example, CN202020733860.7 discloses a disposable transferable blood collection needle, which adopts a Y-shaped main pipe and a side pipe, the main pipe is connected to the blood collection needle, and the measuring tube is connected to a sterile pressure measuring pipe. When pressing, there will be an extra action of opening and closing the clamp of the side tube, and there is also the possibility of blood entering the side tube.

Utility model content

In view of the above deficiencies, the utility model provides a fistula needle blood collection device, the technical solution adopted by the utility model is:

A fistula needle blood collection device, which includes a fistula needle, a blood collection needle and a connecting joint, the two ends of the connecting joint are respectively connected with the internal fistula needle and the blood collection needle; the connecting joint includes a connecting tube, a connecting head arranged at both ends of the connecting tube, and A sterile pressure measuring head arranged on the side wall of the connecting tube; the connecting heads at both ends of the connecting tube are respectively connected with the tail end joint of the internal fistula needle and the tail end of the blood collection needle; the sterile pressure measuring head includes a A tube shell, a sterile pressure measuring membrane installed in the tube shell, and a screw cover connected to the outer end of the tube shell.

Further, the internal fistula needle includes a fistula needle head, a rubber tube connected to the internal fistula needle head, a flow-stop clamp sleeved on the rubber tube, and a tail-end joint arranged at the tail end of the rubber tube.

Compared with the prior art, the utility model has the beneficial effect that: the utility model realizes the connection of the internal fistula needle and the blood collection needle through the connection joint, forms a closed blood collection device, and can avoid the problem of blood sample exposure and pollution during the blood collection operation; The connecting joint is equipped with a sterile pressure measuring head, which can evacuate the inside of the needle and the tube to realize zero-pressure blood collection; unscrew the connecting joint and the end joint of the internal fistula needle to perform normal dialysis operation.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a structural schematic diagram of the connecting joint of the present invention.

Detailed ways

The technical scheme of the utility model is further described below in conjunction with the accompanying drawings and embodiments.

Example:

Referring to Fig. 1-2, a fistula needle blood collection device includes a fistula needle 1, a blood collection needle 2 and a connecting joint 3, and the two ends of the connecting joint 2 are respectively connected with the internal fistula needle 1 and the blood collection needle 2; Joint 3 comprises connecting pipe 31, the connecting head 32 that is arranged on connecting pipe two ends and the aseptic pressure measuring head 33 that is arranged on connecting pipe side wall; The tail end 21 of the blood collection needle 2 is screw connected; the sterile pressure measuring head 33 includes a tube shell 301 communicated with the connecting pipe, a sterile pressure measuring film 302 installed in the tube shell, and a screw outer cover 303 connected to the outer end of the tube shell .

Further, the internal fistula needle 1 includes a fistula needle 11, a rubber tube 12 connected to the internal fistula needle, a flow-stop clamp 13 sleeved on the rubber tube, and a tail end connector 14 arranged at the tail end of the rubber tube.

In this embodiment, the sterile pressure measuring membrane is a medical waterproof and gas-permeable membrane, which is breathable but impervious to water.

When using this internal fistula needle blood collection device for blood collection, clamp the stop clip on the internal fistula needle, puncture the patient with an empty needle of the internal fistula needle, and then open the stop flow clip and the screw outer cover of the sterile pressure measuring head for drainage. Exhaust pressure, tighten the screw cover of the sterile pressure measuring head after the exhaust pressure is completed, then pull out the protective rubber sleeve of the blood collection needle, insert the blood collection needle into the blood collection test tube to take blood samples, and clamp the flow stop clip after the blood collection is completed That's it. When performing dialysis treatment, unscrew and disassemble the tail end joint of the internal fistula needle and the connection head of the connecting joint, and then the internal fistula needle can be used for normal dialysis treatment.

The above is a preferred embodiment of the present utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present utility model, some improvements and modifications can also be made, these improvements and modifications It is also regarded as the protection scope of the present utility model.

Claims (2)

1. A fistula needle blood collection device is characterized in that: it comprises an internal fistula needle, a blood collection needle and a connection joint, and the two ends of the connection joint are connected with the internal fistula needle and the blood collection needle respectively; The connectors at both ends and the sterile pressure measuring head arranged on the side wall of the connecting tube; the connecting heads at both ends of the connecting tube are respectively screw connected with the tail end joint of the internal fistula needle and the tail end of the blood collection needle; the sterile pressure measuring head includes A tube shell communicated with the connecting pipe, a sterile pressure measuring membrane installed in the tube shell, and a screw outer cover connected to the outer end of the tube shell. 2. The internal fistula needle blood collection device according to claim 1, characterized in that: the internal fistula needle comprises a fistula needle, a rubber tube connected to the internal fistula needle, a flow-stop clamp sleeved on the rubber tube, and a setting End fitting at the end of the hose.

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