CN108498330A - A kind of blood taking bag and application method with blood specimen collection device - Google Patents

Abstract

The invention discloses one kind by blood taking bag, heparin tube, blood taking needle, two air bags, the blood taking bag and application method with blood specimen collection device of two heparin tube croppers composition, heparin tube on blood taking bag connects blood taking needle after the hollow tube of the identical two heparin tube croppers of structure, first air bag is installed on the heparin tube between two heparin tube croppers, the second air bag is installed on the heparin tube between the second heparin tube cropper and blood taking needle；Heparin tube cropper hollow tube one end is conical pipe, there are longitudinal slot in tube wall port both sides, tube wall locks nut equipped with circumferential, external thread, and the swivel becket with boss is cased on the hollow tube other end, there is the slidable vertical blades with banking stop support on boss.Step collecting blood sample is used by three.Collecting blood sample of the present invention is not easy haemolysis, does not generate blood sample clot, and blood plasma consumes less, blood retains simplicity, ensures that blood sample detection secure data is accurate and reliable.

Description

A blood collection bag with a blood sample collection device and its use method

technical field

The invention relates to the technical field of medical devices, in particular to a blood collection bag with a blood sample collection device and a method for using it.

Background technique

Existing blood collection bags are sent to clinical blood institutions after blood testing by blood collection and supply institutions. Blood transfusion departments or blood banks of clinical blood institutions need to collect blood samples for blood type and blood matching tests, but the blood bag is a closed structure. It is forbidden to use any method to collect the blood in the blood bag before the patient is transfused, so the blood in the blood collection tube has become the best way to make a blood sample. One end of the blood collection tube is connected to the blood bag, and the other end is connected to the blood collection needle. Before the blood collection starts, it is generally required to moisten the blood collection tube with the maintenance solution with anticoagulant in the blood bag to ensure that the blood can be kept in the tube during the blood collection process. Normal flow in the pipeline and reduce the probability of blood clot formation. After the blood collection is over, the operator will use a heat sealing machine to heat the blood collection tube into several sections of airtight pipelines. Because the maintenance solution with anticoagulant moistens the tubes After the blood of the blood donor is washed, the anticoagulant components are almost washed away, and the residual anticoagulant dose in the pipeline becomes lower, resulting in clots in the pipeline from time to time. The current method of specimen collection is to peel off the code of the blood bag from the blood bag and stick it on the glass test tube, cut off a section of airtight pipeline from the blood collection tube of the blood bag, cut off one end of the pipeline with scissors and put it into the test tube, and then cut the other At one end, the blood in the tube is pressed into the test tube by the difference in atmospheric pressure between the two ends of the tube. But adopt above-mentioned traditional blood collection bag, there is following defect: 1, the situation that clot is arranged in the blood collection tube takes place from time to time, causes blood to be difficult to flow out, can only forcibly extrude and oppress pipeline and make blood flow out, causes sample hemolysis easily like this, The test cannot be used; 2. Because the clot consumes a large amount of plasma, the plasma content after centrifugation is very low, and the follow-up test cannot be carried out; 3. When some clots that cannot be distinguished by the naked eye remain in the specimen, the addition of testing equipment The sample needle will be blocked by clots, causing instrument failure; 4. The use of scissors in the blood sample collection process may accidentally cut the blood bag, and the scissors must be cleaned after each operation of a blood bag to avoid operation on the next blood bag Cause pollution, the operation process is very inconvenient and loaded down with trivial details. 5. During the blood sample collection process, the blood sample pipeline is not firmly combined with the blood sample test tube. Opening both ends of the pipeline with scissors may cause the pipeline to fall out of the test tube. Developing a blood collection bag with a blood sample collection device that is not easy to hemolysis, does not produce blood sample clots, consumes less plasma, is easy to store blood, and ensures accurate and reliable blood sample detection is a task that needs to be completed in this technical field.

Contents of the invention

The purpose of the present invention is to provide a blood collection bag with a blood sample collection device that is not easy to hemolysis, does not produce blood sample clots, consumes less plasma, is easy to store blood, and ensures accurate and reliable blood sample detection. At the same time, it provides a blood sample collection device How to use the blood collection bag.

In order to achieve the above object, the technical solution adopted in the present invention is: a blood collection bag with a blood sample collection device, which consists of a blood collection bag, a blood collection tube, a blood collection needle, a first air bag, a second air bag; a first blood collection tube cutter and the second blood collection tube cutter, which is characterized in that: the blood collection bag is sealed and connected with a blood collection tube, and the other end of the blood collection tube is movably matched with the hollow tubular body passing through the first blood collection tube cutter and the second blood collection tube cutter After connecting the blood collection needle, the first airbag is sealed and installed on the blood collection tube between the first and the second blood collection tube cut-off device, and the second air bag is sealed and installed on the blood collection tube between the second blood collection tube cut-off device and the blood collection needle; One end of the hollow tubular body of the first blood collection tube cutter is a tapered tube with a tapered diameter. There is a symmetrical longitudinal gap on both sides of the tube wall port. The tube wall corresponding to the longitudinal gap is provided with a circumferential external thread. Cooperate with the lock nut, the other end of the hollow tubular body is fitted with a rotating ring on the round tube, and there is a boss on the rotating ring. There is a vertical circumferential flat through groove on the boss, and the blade is inserted into the groove through moving fit. The head is supported by the limit piece on the boss, and the structure of the second blood collection tube cutoff is the same as that of the first blood collection tube cutoff.

The length of the blood collection tube is 1000-1100 mm, the outer diameter is 5 mm, and the inner diameter is 3.2 mm.

The first air bag is located at 550 mm near the bag end of the blood collection tube, and the second air bag is located at 1000 mm near the bag end.

The volume of the first air bag is 5ml, and the volume of the second air bag 6 is 10ml.

The blood collection tubes between the blood collection bag and the first blood collection tube cutter, between the first airbag and the second blood collection tube cutter, and between the second airbag and the blood collection needle are respectively provided with heat-bonded heat-sealing machines.

The method of using the blood collection bag with the blood sample collection device is as follows:

Step 1. When collecting blood, the position of the blood donor is higher than the position of the blood collection bag, and the blood collection needle is inserted into the vein of the blood donor, and the blood of the blood donor will flow directly into the blood collection bag by using the height difference.

Step 2. After the blood collection is completed according to the blood collection standard operating procedure, use the hemostat to clamp the blood collection tube closest to the blood collection needle, pull out the blood collection needle from the blood donor, and use a heat sealing machine to quickly make a heat seal on the blood collection tube and cut off the blood collection needle. , press the second airbag to make all the unanticoagulated blood in the blood collection tube flow into the blood collection bag, then release the second airbag to restore the airbag to its original shape, and the negative pressure makes the anticoagulated blood flow back to fill the blood collection tube, and then separate them with a heat sealing machine Heat bonding is made on the blood collection tube between the blood collection bag and the first air bag and between the first air bag and the second blood collection tube cutter, and the blood collection tube is divided into two airtight tube bodies.

Step 3, blood sample collection, break the thermal junction at the end of the mining blood vessel, slide the second blood collection tube cutter to the vicinity of the blood collection tube thermal junction, and then rotate the lock nut to make the hollow tubular body of the second blood collection tube cutter The longitudinal gap gradually shrinks and locks the blood collection tube, then removes the limit piece on the boss of the rotating ring, removes the support on the elbow at the top of the blade, and presses down on the blade, while rotating the rotating ring to cut off and separate the end of the blood collection tube and rotate Then insert the exposed end of the blood collection tube and the end of the hollow tube of the second blood collection tube cutter together into the blood sample test tube, and press the second air bag to make the blood in the blood collection tube flow into the blood sample test tube.

The first blood collection tube cutter can collect the blood in the blood collection tube into another blood sample test tube according to the same steps for the second blood type detection.

The first and second airbags of the present invention are both higher than the blood collection bag, the pressure inside the bag is higher than the pressure inside the blood collection bag, and the passage of the blood collection tube is narrow, the blood in the blood donor will directly flow into the blood collection bag and be mixed with the anticoagulant maintenance solution in the bag Anticoagulant mixes well without flowing into the balloon. And the blood collection tube cutter set on the blood collection tube will not affect the blood collection process and blood collection effect. Since the diameter of the lock nut on the cut-off hollow tube of the blood collection tube is larger than the diameter of the blood sample test tube, when the exposed end of the blood collection tube and the end of the hollow tube of the blood collection tube cut-off device are inserted into the blood sample test tube together, the lock nut covers the blood sample test tube. On the mouth of the tube, the exposed end of the blood collection tube can be well fixed in the blood sample, and the combination is firm to prevent accidental falling off.

The normal hematocrit in the human body is 0.45 for men and 0.40 for women, so 1.3ml of plasma can be separated from 3ml of blood. According to regulations, the blood transfusion department of a medical institution needs to perform positive and negative ABO blood type typing and RHD blood type positive determination for red blood cell blood products. The test tube method needs 6 drops of plasma for reverse typing, and the polybrene blood matching method needs 2 drops of plasma. Considering difficult tests and multiple Two times of blood matching, 3ml blood sample can be used for two blood type tests and four times of blood matching, which can basically meet the test requirements. Blood volume requirements can be further reduced by performing the Cassette Gel method for blood typing and cross matching. Because the blood collection and supply institutions need to verify the ABO blood type more than twice, and also need to do a series of items such as infectious disease screening, so they are all precision micro-test equipment, and 3ml blood can meet the test requirements. Therefore, the length of the blood collection tube in the present invention, The position and quantity of the thermal junction, the position and quantity of the air bag, and the position and quantity of the cut-off device of the blood collection tube are all specifically limited.

Due to the adoption of the above-mentioned structural principle, the beneficial technical effects of the present invention are: the collected blood sample is not easy to hemolyze, does not produce blood sample clots, consumes less plasma, and retains blood easily, simplifies the working steps of blood sample collection in blood collection bags, and avoids Scratches the blood collection bag and pollutes the blood sample, guarantees the use safety of detection equipment and the detection of blood sample sample is accurate and reliable, has reached the purpose of the invention.

Description of drawings

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

Fig. 2 is the structural representation of blood collection tube cutter of the present invention

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings. From Fig. 1 and Fig. 2, the structure and principle of the present invention can be seen. , the first airbag 4, the second airbag 6; the first blood collection tube cutter 3 and the second blood collection tube cutter 5, the blood collection bag 1 is sealed and connected with a blood collection tube 2, and the other end of the blood collection tube 2 is movably fitted and worn Connect the blood collection needle 7 after passing through the hollow tubular body of the first blood collection tube cut-off device 3 and the second blood collection tube cut-off device 5, and install the first Airbag 4, the second airbag 6 is sealed and installed on the blood collection tube 2 between the second blood collection tube cut-off 5 and the blood collection needle 7; one end of the hollow tubular body of the first blood collection tube cut-off device 3 is a tapered tube with tapered diameter , there is a symmetrical longitudinal gap 11 on both sides of the pipe wall port, the pipe wall corresponding to the longitudinal gap 11 is provided with a circumferential external thread 10, the external thread 10 is matched with a lock nut 9, and the other end of the hollow tubular body is dynamically matched with the round pipe A rotating ring 15 is sleeved, and the rotating ring 15 is provided with a boss 12, and the boss 12 is provided with a circumferential vertical flat through groove, and the blade 13 is inserted into the groove in a moving fit, and the elbow at the top of the blade 13 is formed by the boss 12. The limit piece 14 is supported, and the structure of the second blood collection tube cutter 5 is the same as that of the first blood collection tube cutter 3 .

The length of the blood collection tube 2 is 1000-1100 mm, the outer diameter is 5 mm, and the inner diameter is 3.2 mm.

The first airbag 4 is located at 550 mm near the bag end of the blood collection tube 2 , and the second airbag 6 is located at 1000 mm near the bag end.

The volume of the first air bag 4 is 5ml, and the volume of the second air bag is 10ml.

The blood collection tubes 2 between the blood collection bag 1 and the first blood collection tube cutter 3, between the first air bag 4 and the second blood collection tube cutter 5, and between the second air bag 6 and the blood collection needle 7 are respectively provided with heat seals. Machine hot-pressed heat-bonded junction8.

The method of using the blood collection bag with the blood sample collection device is as follows:

Step 1. When collecting blood, the body position of the blood donor is higher than the placement position of the blood collection bag 1, and the blood collection needle 7 is inserted into the vein of the blood donor, and the blood of the donor is directly flowed into the blood collection bag 1 by using the height difference.

Step 2: After the blood collection is completed according to the blood collection standard operating procedure, clamp the blood collection tube 2 closest to the blood collection needle 7 with a hemostat, pull out the blood collection needle 7 from the blood donor, and use a heat sealing machine to quickly make a heat-sealed bond on the blood collection tube 2 Cut off and discard the blood collection needle 7, press the second airbag 6 to make all the unanticoagulated blood in the blood collection tube 2 flow into the blood collection bag 1, then release the second airbag 6 to restore the airbag to its original shape, and the negative pressure makes the anticoagulated blood re- Backflow fills the blood collection tube 2, and then uses a heat sealing machine to make heat-bonded joints 8 on the blood collection tube 2 between the blood collection bag 1 and the first air bag 4 and the first air bag 4 and the second blood collection tube cutter 5, and divides the blood collection tube into 2 parts. It is a closed two-section pipe body.

Step 3, blood sample collection, cut off the thermal junction at the end of the mining blood vessel 2, slide the second blood collection tube cutter 5 to the vicinity of the thermal junction 8 of the blood collection tube 2, and then rotate the locking nut 11 to cut off the second blood collection tube The longitudinal slit 11 on the hollow tubular body of the device 5 shrinks gradually and locks the blood collection tube 2, then pushes away the limit piece 14 on the boss 12 of the rotating ring 15, removes the support on the elbow at the top of the blade 13, and presses down on the blade 13. Rotate the rotating ring 15 at the same time to cut off and separate the end of the blood collection tube 2 and the rotating ring 15, so that the blood in the blood collection tube 2 is exposed, and then plug the exposed end of the blood collection tube 2 and the hollow tube end of the second blood collection tube cutter 5 together into the blood sample test tube, press the second air bag 6, so that the blood in the blood collection tube 2 flows into the blood sample test tube.

The first blood collection tube cutter 3 can collect the blood in the blood collection tube 2 into another blood sample test tube according to the same steps for the second blood type detection.

Claims (7)

1. A blood collection bag with a blood sample collection device, comprising a blood collection bag (1), a blood collection tube (2), a blood collection needle (7), a first air bag (4), a second air bag (6), a first blood collection bag Composed of a blood vessel cutter (3) and a second blood collection tube cutter (5), it is characterized in that: the blood collection bag (1) is sealed and connected with a blood collection tube (2), and the other end of the blood collection tube (2) is movably fitted through the After passing through the hollow tubular body of the first blood collection tube cutter (3) and the second blood collection tube cutter (5), connect the blood collection needle (7), between the first and the second blood collection tube cutter (3, 5) The first air bag (4) is sealed and installed on the blood collection tube (2), and the second air bag (6) is sealed and installed on the blood collection tube (2) between the second blood collection tube cut-off (5) and the blood collection needle (7); One end of the hollow tubular body of the first blood collection tube cutter (3) is a tapered tube with tapered diameter. There is a section of symmetrical longitudinal slit (11) on both sides of the tube wall port, and the corresponding tube wall of the longitudinal slit (11) is provided with Circumferential external thread (10), the external thread (10) is fitted with a lock nut (9), the other end of the hollow tubular body is fitted with a rotating ring (15) which is fitted with a rotating ring (15) and a boss is provided on the rotating ring (15) (12), the boss (12) is provided with a circumferential vertical flat through groove, and the blade (13) is moved and inserted into the through groove, and the elbow at the top of the blade (13) is controlled by the limit piece (14) support, the structure of the second blood collection tube cutter (5) is the same as that of the first blood collection tube cutter (3). 2. The blood collection bag with the blood sample collection device according to claim 1, characterized in that: the length of the blood collection tube (2) is 1000-1100 mm, the outer diameter is 5 mm, and the inner diameter is 3.2 mm. 3. The blood collection bag with the blood sample collection device according to claim 1, characterized in that: the first air bag (4) is located at the end 550 mm near the bag end of the blood collection tube (2), and the second air bag (6 ) is located at 1000mm near the bag end. 4. The blood collection bag with a blood sample collection device according to claim 1, characterized in that: the volume of the first airbag (4) is 5ml, and the volume of the second airbag is 10ml. 5. The blood collection bag with the blood sample collection device according to claim 1, characterized in that: between the blood collection bag (1) and the first blood collection tube cutter (3), between the first air bag (4) and the second The blood collection tubes (2) between the two blood collection tube cutters (5) and between the second air bag (6) and the blood collection needle (7) are respectively provided with thermal bonding joints (8) heat-pressed by a heat sealing machine. 6. A method of using a blood collection bag with a blood sample collection device is as follows: Step 1. When collecting blood, the body position of the blood donor is higher than the placement position of the blood collection bag 1, and the blood collection needle 7 is inserted into the vein of the blood donor, and the blood of the donor is directly flowed into the blood collection bag 1 by using the height difference. Step 2: After the blood collection is completed according to the blood collection standard operating procedure, clamp the blood collection tube 2 closest to the blood collection needle 7 with a hemostat, pull out the blood collection needle 7 from the blood donor, and use a heat sealing machine to quickly make a heat-sealed bond on the blood collection tube 2 Cut off and discard the blood collection needle 7, press the second airbag 6 to make all the unanticoagulated blood in the blood collection tube 2 flow into the blood collection bag 1, then release the second airbag 6 to restore the airbag to its original shape, and the negative pressure makes the anticoagulated blood re- Backflow fills the blood collection tube 2, and then uses a heat sealing machine to make heat-bonded joints 8 on the blood collection tube 2 between the blood collection bag 1 and the first air bag 4 and the first air bag 4 and the second blood collection tube cutter 5, and divides the blood collection tube into 2 parts. It is a closed two-section pipe body. Step 3, blood sample collection, cut off the thermal junction at the end of the mining blood vessel 2, slide the second blood collection tube cutter 5 to the vicinity of the thermal junction 8 of the blood collection tube 2, and then rotate the locking nut 11 to cut off the second blood collection tube The longitudinal slit 11 on the hollow tubular body of the device 5 shrinks gradually and locks the blood collection tube 2, then pushes away the limit piece 14 on the boss 12 of the rotating ring 15, removes the support on the elbow at the top of the blade 13, and presses down on the blade 13. Rotate the rotating ring 15 at the same time to cut off and separate the end of the blood collection tube 2 and the rotating ring 15, so that the blood in the blood collection tube 2 is exposed, and then plug the exposed end of the blood collection tube 2 and the hollow tube end of the second blood collection tube cutter 5 together into the blood sample test tube, press the second air bag 6, so that the blood in the blood collection tube 2 flows into the blood sample test tube. 7. The method of using the blood collection bag with the blood sample collection device according to claim 6, characterized in that: the first blood collection tube cutter 3 can collect the blood in the blood collection tube 2 into another blood collection tube according to the same steps A second blood type test is performed in a blood sample tube.