CN204995489U - Internal arteriovenous fistula blood collection ware - Google Patents

Abstract

Arteriovenous fistula blood sample collector, one end of the needle seat is fixed with a plug puncture needle, a needle sheath is fixed outside the tube plug puncture needle, the other end of the needle seat is an internal thread cover, and the cavity of the internal thread cover is connected with the tube plug The cavities of the puncture needles communicate. When blood sampling is required, screw the internal thread cover of the collector to the external thread at the end of the plastic tube of the arteriovenous fistula puncturer. The needle sheath of the blood collection device can effectively prevent blood from flowing out. Then open the clip on the plastic hose of the puncturer. The high positive pressure of the blood vessel of the patient with internal fistula combines with the negative pressure of the blood collection tube to promote blood to automatically flow into the blood collection tube, thereby avoiding various disadvantages of using a syringe to collect blood.

Description

arteriovenous fistula blood sample collector

technical field

The utility model relates to the field of medical equipment, in particular to a joint used for blood collection.

Background technique

Clinically, hemodialysis patients need to regularly collect a large number of blood samples for laboratory tests before dialysis. In order to reduce the number of punctures for patients with arteriovenous fistula, clinical staff usually directly use a syringe to puncture the end of the arteriovenous fistula puncture device for blood sample collection, and then distribute into each blood collection tube. This has caused several problems: First, the amount of blood collected is inaccurate. The amount of blood drawn from the syringe is estimated according to the amount required in the test tube before the blood is collected. When subpackaging, it is easy to cause insufficient blood volume in the test tube or excessive blood collection, which will cause the patient's blood to be wasted. ; Second, blood-borne pollution is generated. During the process of unloading the syringe and repacking blood with a syringe, it is inevitable that blood samples will be contaminated or splashed, causing contamination of the operating table and nurses' hands, and increasing the probability of blood-borne contamination; 3. It affects the quality of blood samples. After the blood is drawn by the syringe, it cannot be injected into the blood collection tube at the first time. The blood stays in the syringe for a long time and is prone to coagulation. Blood collection efficiency, syringe blood collection needs to separate blood collection tubes and distribute them, which seriously affects the work efficiency of the operator.

Contents of the invention

In order to solve the above-mentioned deficiencies in the prior art, a blood sample collector for arteriovenous fistula is provided, which can effectively solve the problems of inaccurate blood collection volume, hemolysis or coagulation of specimens, etc., can effectively reduce blood-borne pollution, and improve blood collection efficiency .

In order to achieve the above object, the utility model adopts the following technical solutions:

Arteriovenous fistula blood sample collector, one end of the needle base is fixed with a plug puncture needle, a needle sheath is fixed outside the tube plug puncture needle, the other end of the needle base is an internal thread cover, and the cavity of the internal thread cover is connected with the tube plug The cavities of the puncture needles communicate.

The above-mentioned arteriovenous fistula blood sample collector is provided with a guide tube in the inner threaded cover.

When blood sampling is required, screw the internal thread cover of the collector to the external thread at the end of the plastic tube of the arteriovenous fistula puncturer to fix it. The needle sheath of the blood collection device can effectively prevent blood from flowing out. Then open the clip on the plastic hose of the puncturer. The high positive pressure of the blood vessel of the patient with internal fistula combines with the negative pressure of the blood collection tube to promote blood to automatically flow into the blood collection tube, thereby avoiding various disadvantages of using a syringe to collect blood.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the utility model.

Fig. 2 is a schematic diagram of the connection structure with other components when the utility model is in use.

Marked in the figure: 1. Internal thread cap, 2. Drainage tube, 3. Plastic protective sleeve, 4. Plug puncture needle, 5. Needle seat, 6. Blood collection tube, 7. Cap of blood collection tube, 8. Arteriovenous fistula blood sample collector, 9 arteriovenous fistula puncture device.

detailed description

Referring to the accompanying drawings, in the arteriovenous fistula blood sample collector described in this embodiment, a plug puncture needle 4 is fixed at one end of the needle holder 5, and a needle sheath 3, that is, a plastic protective cover, is fixed outside the plug puncture needle, and the other end of the needle holder is It is an internally threaded cover 1, and a guide tube 2 is arranged inside the internally threaded cover. The guide tube is located in the internally threaded cover, fixed on the other side of the needle seat, and protrudes outward. The cavity of the guide tube and the The cavity of the tube plug puncture needle communicates.

Screw the internal thread cover of the arteriovenous fistula blood sample collector 8 described in the present invention to the end of the plastic tube of the arteriovenous fistula puncturer 9 to fix the two together, then insert the tube plug puncture needle into the blood collection test tube, and collect blood samples. Blood vessels are closed test tubes filled with negative pressure. Different blood collection tubes require different negative pressures according to the blood volume, so that blood can be collected on demand, and multiple blood samples can be collected at one time to meet the blood collection needs.

The material of the needle sheath is soft plastic, which can also be called a plastic protective sheath. The needle sheath is fixed on the needle seat and sleeved outside the puncture needle with the stopper, which is not easy to remove, and can prevent the blood on the puncture needle from the stopper from flowing out. . When the plug puncture needle pierces the blood collection tube, the needle pierces the cover 7 of the plastic protective sleeve and the blood collection tube, and at this time the plastic protection sleeve shrinks back, and the tube plug puncture needle is exposed to the inner cavity of the blood collection tube for blood collection; After the blood collection tube is pulled out, the plastic protective cover returns to its original position, and the needle is put into the protective cover to prevent blood from flowing out.

Claims (2)

1. internal arteriovenous fistula blood sample collector, needle stand one end is fixed with pipe close puncture needle, and it is characterized in that there is needle shield at pipe close puncture needle extenal fixation, the needle stand other end is female thread capping, and the cavity of female thread capping communicates with the cavity of pipe close puncture needle.

2. internal arteriovenous fistula blood sample collector as claimed in claim 1, is characterized in that being provided with mozzle in female thread capping.