CN101564301A - Safe sample-keeping blood-taking device - Google Patents

Abstract

The invention relates to a safe sample blood collection device, which includes a closed blood collection needle, an anticoagulant whole blood bag, a transfer bag, and a catheter. The blood bags are connected to a frangible conduction tube through a tee, and the other end of the conduction tube is connected to a reserved blood bag with a capacity of 10-50mL, and a sampling socket is provided at the lower end of the reserved blood bag. The sampling socket is used for matching with the vacuum blood collection tube. The invention can perform sampling and separation in the early stage of blood collection, reduce blood pollution caused by excessive environment and incomplete skin disinfection during blood collection, thereby ensuring the safety of clinical blood collection, sampling and blood use. The invention has reasonable structure, convenient operation and use, and is especially suitable for one-time blood collection and reserved sample detection.

Description

Safety sample retention blood collection device

technical field

The invention relates to a medical device, in particular to a disposable safe sample blood collection device.

Background technique

With the development of blood transfusion technology, ensuring the safety of blood transfusion has attracted more and more attention of blood collection and transfusion professionals. Bacterial contamination is one of the main factors threatening the safety of blood transfusion. Although the current use of multiple blood bags reduces the chance of bacterial contamination, it is still possible to cause contamination during the blood collection process due to the following reasons: the blood donor itself has a local infection focus, accompanied by other factors in the state of bacteremia, blood in the There is a small amount of bacteria in the original contamination; the skin is not thoroughly disinfected, the disinfectant that does not meet the requirements is used for disinfection, or the skin is not disinfected strictly in accordance with the operating standards, causing bacteria at the puncture site to enter the blood collection bag with the blood; the blood collection environment is poor, resulting in puncture When outside air enters the blood bag or secondary pollution after skin disinfection, the blood is polluted. Studies have shown that most of the blood that is polluted by external bacteria causes bacteria to multiply during storage because it is within the first 5-10ml of blood at the beginning of blood collection. Removing the initially collected blood from the blood bag can reduce the chance of blood contamination .

Disposable blood bags are commonly used medical devices in the process of blood collection and blood transfusion, which generally include closed blood collection needles and anticoagulant whole blood bags. Anticoagulant whole blood bags can be single or multiple. Blood transfusion can be performed by connecting a blood transfusion set during blood transfusion. The disposable blood bag can play the role of single-use closed blood collection and blood transfusion, and can prevent and avoid clinical cross-infection. We also know that when blood is collected, samples are taken for analysis and testing. At present, most of the blood that enters the blood bag and the sampled blood during blood collection are manually separated, and errors such as crossing and confusion are prone to occur between the sampled blood and the blood bag label. The method of sampling blood from the blood bag is cumbersome in operation, and mistakes such as crossover and confusion are prone to occur on the label, which seriously affects the safety of clinical blood use. Chinese patent 2006200846834 discloses a disposable safe sampling blood bag, including closed blood collection needle, anticoagulated whole blood bag, anticoagulated whole blood bag is provided with blood transfusion socket and transfer tube, closed blood collection needle, anticoagulated whole blood An easy-to-break guide tube is connected between the bags through a tee, and the other end of the guide tube is connected to a vacuum sampling socket. During the sampling operation, the vacuum sampling socket is used to cooperate with the vacuum blood collection tube. Vacuum blood collection tubes are used to directly sample blood during blood collection, and the sampling volume is not stable enough.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the above-mentioned prior art, and to provide a device with reasonable structure, convenient operation and use, which can safely retain samples while taking blood, and reduce the problems caused by excessive environment and incomplete skin disinfection during blood collection and sample retention. Safe sample retention blood collection device for blood contamination.

The technical solution adopted by the present invention to solve the above technical problems is: a safe sample blood collection device, including a closed blood collection needle, an anticoagulant whole blood bag, a transfer bag, a catheter, and the anticoagulant whole blood bag is provided with a blood transfusion socket and a transfer catheter , which is characterized in that: the closed blood collection needle and the anticoagulant whole blood bag are connected by a three-way connection to a frangible conduction tube, the other end of the conduction tube is connected to a reserved blood bag with a capacity of 10-50mL, and the reserved blood A sampling port is provided at the lower end of the bag.

The sampling socket of the present invention includes a puncture needle, a hemostatic sheath and a hand-held sheath covering the outside.

In the present invention, the easy-to-break type conduit is provided with an easy-to-break plug, and the conduit is also provided with a flow-stop clamp.

In the present invention, a sample-retaining blood bag and a sampling socket are added between the closed blood collection needle and the anticoagulant whole blood bag. When in use, about 10-50ml of blood in the early stage of blood collection can be discharged into the reserved blood bag, and samples can be taken from the reserved blood bag through a vacuum blood collection tube for detection. Compared with the existing technology, it can perform sampling and separation in the early stage of blood collection, reducing blood pollution caused by excessive environment and incomplete skin disinfection during blood collection, thereby ensuring the safety of clinical blood collection, sampling, and blood use. The invention has reasonable structure, convenient operation and use, and is especially suitable for one-time blood collection and reserved sample detection.

Description of drawings

Below in conjunction with accompanying drawing, the present invention will be further described:

Fig. 1 is a structural schematic diagram of the present invention.

In the figure 1. Closed blood collection needle, 2. Tee, 3. Conduit, 4. Stop clip, 5. Sample blood bag, 6. Sampling socket, 7. Switch clip, 8. Anticoagulant whole blood bag , 9. Blood transfusion socket, 10. Transfer catheter, 11. Transfer bag.

Detailed ways

It can be seen from FIG. 1 that a safe sample blood collection device of the present invention includes a closed blood collection needle 1 , an anticoagulated whole blood bag 8 , a transfer bag 11 , and a catheter. The closed blood collection needle 1 is used for blood collection, and the conventional puncture blood collection can be carried out by breaking off the protective cap thereon. Anticoagulant whole blood bag 8 is used for collecting whole blood. The anticoagulant whole blood bag 8 is provided with a blood transfusion socket 9, a transfer catheter 10 and an anticoagulant inlet, etc., which are respectively used for blood transfusion operations to connect blood transfusion sets, transfer whole blood, and add anticoagulant. The closed blood collection needle 1 and the anticoagulated whole blood bag 8 are connected by a catheter, and the switch is controlled by the switch clip 7 . The anticoagulated whole blood bag 8 can be connected to multiple transfer bags 11 through a transfer catheter 10 . Their specific structures, connections and functions are basically the same as those of the prior art and will not be described in detail.

The characteristics of the present invention are: a frangible conduction tube 3 is connected between the closed blood collection needle 1 and the anticoagulant whole blood bag 8 through a tee 2, and the other end of the conduction tube 3 is connected to a reserved sample with a capacity of 10-50 mL The blood bag 5 is provided with a sampling socket 6 at the lower end of the sample-retaining blood bag 5 .

The sampling socket 6 of the present invention includes a puncture needle, a hemostatic sheath and a hand-held sheath covering the outside. The specific composition and connection relationship of the blood-blocking sheath and the hand-held sheath in the sampling socket belong to the prior art. The sampling socket is used for matching with the vacuum blood collection tube. The whole set of sampling sockets meets the blood collection requirements of vacuum blood collection tubes.

The frangible conduction tube 3 of the present invention is provided with a frangible plug, and when the frangible plug is broken during use, the conduction tube can be turned on. A stop clip 4 is also provided on the conduit 3 .

When the present invention is in use, the switch clip 7 is closed, the frangible plug and the flow stop clip 4 are opened, and the requirements for puncture of blood collection in a conventional blood bag are the same for venipuncture. Collect about 10-50 mL of venous blood into the reserved blood bag 5 in the pre-blood collection period according to needs or regulations. Close the stop clamp 4, open the switch clamp 7, and carry out normal blood collection.

Use a vacuum blood collection tube to collect a required amount of blood from the sampling socket 6 connected to the sample blood bag 5 as a sample for inspection or typing. After the collection is completed, heat seal the discarded blood collection needle 1, the reserved blood bag 5, the sampling socket 6, etc. according to the normal blood collection requirements.

The invention adds a sample-retaining blood bag and a sampling device between the closed blood collection needle and the anticoagulant whole blood bag. When in use, about 10-50ml of blood in the early stage of blood collection can be discharged into the reserved blood bag, and samples can be taken from the reserved blood bag through a vacuum blood collection tube for detection. It can perform sampling and separation in the early stage of blood collection, which improves the safety of blood collection, and at the same time facilitates the operator's operation of retaining samples during blood collection. Compared with retaining samples directly through vacuum blood collection tubes, the sampling volume is more stable, which is convenient for the realization of automatic detection. Compared with directly discarding blood samples that may be contaminated at the front end, the utilization rate of blood is improved, and the waste of precious blood resources is reduced. The invention has reasonable structure, convenient operation and use, and is especially suitable for one-time blood collection and reserved sample detection.

Claims (3)

1, a kind of safe sample-keeping blood-taking device, comprise closed blood taking needle, anticoagulated whole blood bag, transfering bag, conduit, the anticoagulated whole blood bag is provided with blood transfusion socket and transfer conduit, it is characterized in that: connect a formula conduction pipe easy to break by threeway between closed blood taking needle and the anticoagulated whole blood bag, the conduction pipe other end connects the blood bag that keeps sample that a capacity is 10～50mL, and the blood bag lower end that keeps sample is provided with the sampling socket.

2, safe sample-keeping blood-taking device as claimed in claim 1 is characterized in that: the sampling socket includes puncture needle and is enclosed within its outside blood resistance unit and hand-held sheath.

3, safe sample-keeping blood-taking device as claimed in claim 1 is characterized in that: be provided with easy folding plug in the formula conduction pipe easy to break, also be provided with flow-stopping clip on the conduction pipe.