JP5767769B2 - Phlebotomy bag system and phlebotomy kit - Google Patents

Description

  The present invention relates to a phlebotomy bag system mainly used for phlebotomy.

  In 1994, the effectiveness of hemoptysis treatment for chronic hepatitis C was reported. The hemoptysis therapy is a treatment method that removes iron accumulated in the liver by appropriately repeating the procedure of collecting blood from a patient and discarding it, thereby reducing the hepatitis (see Non-Patent Document 1). In Japan, there are about 2 million patients with this disease, and it is said that a significant portion of these patients are indicated for this therapy. Therefore, the demand for phlebotomy is rapidly increasing.

  In conventional general clinical practice, hemoptysis therapy has been performed only very rarely for polycythemia patients who were the only insurance-adaptive disease. For this reason, there is no inevitably demand for a medical device specialized in blood phlebotomy, and the device used at that time is a blood bag that has been used exclusively for blood donation.

  That is, there is a blood donation site as a place where a considerable amount of blood of 100 mL or more is handled at a time. The site of autologous blood storage, in which the patient's own blood is stored in advance to prepare for bleeding at the time of surgery, is similar, but less than the frequency of blood donation. The instrument used at both sites was a blood bag.

  Therefore, even if the effectiveness of hemoptysis therapy for chronic hepatitis C was reported as described above, the medical instrument utilized during the therapy became a blood bag. The diversion of blood bags was a reasonable choice for the time being when dealing with blood contaminated with hepatitis C virus. However, a blood bag has only a tube that connects the needle, the bag, and both.

  In clinical practice of actual phlebotomy for patients with this disease, in parallel with phlebotomy, test blood collection, intravenous injection, fluid replacement therapy, etc. are often performed in order to determine the progress of this therapy and its effect. However, since the blood of patients with chronic hepatitis C is contaminated with viruses, needle puncture and blood contamination during treatment are performed when bloodletting therapy, blood sampling, intravenous injection, fluid replacement, etc. are performed in parallel. There is a problem that the risk of an infection accident occurring on the implementer side is high.

  Furthermore, blood bags that have been diverted for hemoptyosis are standard at blood donation sites, and the target is primarily young people with healthy bodies. On the other hand, the subjects of hemoptysis are chronic hepatitis C virus infection patients who are likely to progress to serious diseases such as liver cancer and cirrhosis, and there are many elderly people and sick people. Both characters are completely different. Therefore, even when implementing hemoptysis, the points to be considered in implementation are completely different.

J. et al. Gastroenterol 2004; 39: p. 570-574

  In this way, blood bags that have been diverted to bloodletting therapy do not have access points for blood collection, intravenous injection, replacement fluid, etc. that are performed in parallel when bloodletting therapy is performed, The safety mechanism to protect the implementer from such dangers was also insufficient. Of course, there is no function for ensuring the safety of ill patients. In order to solve these problems, it is easy, safe, efficient, smooth and can cope with unforeseen situations such as side effects for patients with infectious diseases. The significance of developing medical devices specialized in hemoptysis therapy is great. In view of such circumstances, an object of the present invention is to provide a device suitable for phlebotomy.

  In order to solve the desired problem, in the present invention, a blood collection needle, a three-way stopcock including first, second, and third connection ports, and a blood collection as a bag system for performing hemopnea therapy on a human being The blood collection needle is connected to the first connection port of the three-way stopcock via a first tube, and the blood collection bag is connected to the second connection port of the three-way stopcock via a second tube Thus, a third embodiment of the three-way stopcock has a phlebotomy bag system provided with a connected means connectable with a connecting means of a syringe, a blood collection device or an infusion line. A three-way stopcock as an access point was provided in the middle of the tube connecting the needle and bag.

  In addition, the blood collection bag in the phlebotomy bag system has two or more rooms separated from each other, and a second tube connected from a three-way stopcock is branched to be connected to each room of the blood collection bag It can be.

  Moreover, this invention can also be set as the aspect which further contains the additional bag system provided with the 2nd three-way stopcock which comprises the 1st, 2nd and 3rd connection port, and the 2nd blood collection bag.

  Furthermore, this invention can also be made into the aspect of the kit combined with the syringe which has a connection means, the blood collection device, or the infusion line in the said hemoptysis bag system.

  According to the phlebotomy bag system of the present invention, the three-way stopcock functions as an access point, and the connected means included in the third connection port can be connected to the connecting means in the syringe, the blood collection device, or the infusion line. A needlestick accident is less likely to occur, and the risk of hepatitis C infection is reduced for workers performing hemoptysis. In addition, since the connected means at the third connection port of the three-way stopcock can be connected to the connecting means in the syringe, blood collection device, or infusion line, the number of punctures to the patient can be reduced, so that hemostasis is received. The patient's QOL can be improved.

  In addition, the blood collection bag of the present invention can be stably weighed by adopting a bag having two or more rooms partitioned from each other. When 200 mL of hemoptysis, which is the basic unit in Japanese phlebotomy, is performed, about 100 mg of iron removal is recognized. Therefore, by setting each of the two compartments to 200 mL capacity, iron removal for every 100 mg unit. Judgment can also be made visually.

  Moreover, this invention makes it the aspect further including the additional bag system provided with the 2nd three-way stopcock provided with the 1st, 2nd, and 3rd connection port, and the 2nd blood collection bag, as needed. Additional phlebotomy.

  The present invention will be described below with reference to the drawings. However, the aspect which concerns on drawing is only one embodiment of this invention. For this reason, this invention is not limited to the embodiment in drawing.

  FIG. 1 is a view showing an embodiment of the phlebotomy bag system of the present invention. The phlebotomy bag system of the present invention in FIG. 1 is filled with a blood collection needle 1, a three-way stopcock 2 having a first connection port 21, a second connection port 22 and a third connection port 23, and an anticoagulant. The blood collection needle 3 is connected to the first connection port 21 of the three-way stopcock 2 via a first tube 41, and the blood collection bag 3 is connected via a second tube 42. The third connection port 22 of the three-way stopcock 2 is connected to the second connection port 22 of the three-way stopcock 2, and the third connection port 23 of the three-way stopcock 2 has a connected means 5 that can be connected to the connection means of a syringe, a blood collection device or an infusion line.

  In the present invention, “the hemopty bag system” refers to a bag system mainly used for hemoptysis therapy for patients with chronic hepatitis C. As described above, bloodletting therapy is the treatment of chronic hepatitis C. By properly repeating the procedure of collecting blood from the patient and discarding it, the iron accumulated in the liver is removed, and the hepatitis is calmed down. It refers to a cure that is intended. When considering the mechanism, in the present invention, human refers mainly to patients with chronic hepatitis C, but is not necessarily limited to patients with chronic hepatitis C. That is, a disease in which an iron-rich state without anemia plays an important role as a disease exacerbation factor (although it is not currently covered by insurance) can be a target.

  The phlebotomy bag system of the present invention is a bag system mainly intended to treat chronic hepatitis C mainly by phlebotomy from humans. For this reason, the phlebotomy bag system of the present invention cannot be used for so-called blood transfusion.

  The phlebotomy bag system of the present invention first includes a blood collection needle 1. The blood collection needle 1 desirably includes a blood collection needle storage mechanism 11. Thereby, since the blood collection needle punctured by the patient is not exposed to the outside world, the needle puncture accident by the worker is less likely to occur, and the risk of hepatitis C infection of the worker who performs hemoptytherapy can be reduced.

  In the present invention, the “blood collection needle” refers to an instrument for puncturing a blood vessel from human skin and collecting blood from the blood vessel through a needle tube in the blood collection needle. The material of the blood collection needle 1 is mainly iron. In phlebotomy therapy that aims to remove iron accumulated in the liver, it is never preferable to use iron as a material for the device of the bag system. However, this is unavoidable as long as there is only iron as a material for needles for puncturing human skin that has an appropriate manufacturing cost and strength.

  On the other hand, the “blood collection needle storage mechanism” means that a blood collection needle is stored in a member that protects the blood collection needle (hereinafter referred to as a blood collection needle protection member) so that the blood collection needle after blood collection is not exposed to the outside world. The blood collection needle housed in the member refers to a mechanism that is never exposed to the outside world. The blood collection needle storage mechanism is not particularly limited as long as it has a function of preventing the blood collection needle after blood collection from being exposed to the outside. A member called a sheath is mainly used as the blood collection needle protecting member, but the present invention is not limited to this. The blood collection needle storage mechanism 11 is an aspect in which the blood collection needle protection member slides so as to house the blood collection needle in the member even if the blood collection needle 1 slides in the blood collection needle protection member. May be. The sliding in the blood collection needle storage mechanism 11 may be performed manually or automatically. Examples of such a blood collection needle 1 include instruments disclosed in JP-A-01-317453, JP-A-10-085333, JP-A-11-319086, and the like. The blood collection needle storage mechanism 11 shown in FIG. 1 conforms to Japanese Patent Application Laid-Open No. 10-085333, and details thereof are omitted.

  Moreover, it is preferable that the blood collection needle 1 further includes a fixing member 12 that stably fixes the blood collection needle during blood collection. The blood collection needle 1 provided with the member is an instrument called a so-called winged needle (assembly), as described in the above-mentioned publication.

  The phlebotomy bag system of the present invention also includes a three-way stopcock 2. The three-way cock 2 includes a first connection port 21, a second connection port 22, and a third connection port 23.

  In the present invention, the “three-way stopcock” mainly includes a blood bag system including three first, second, and third connecting ports, and two or three connecting ports communicating with each other. An instrument for switching the flow path of a blood line in an infusion line or an artificial kidney. Among these, the first connection port 21 is connected to the blood collection needle 1 via a first tube 41, and the second connection port 22 is connected to a blood collection bag 3 described later via a second tube 42. Is done. Here, the first tube 41 and the second tube 42 may be medical tubes. Examples of the material of the first and second tubes 41 and 42 include polyethylene, polyvinyl chloride, polyvinyl acetate, poly (ethylene-vinyl acetate) copolymer, and poly (ethylene-tetrafluoroethylene) copolymer. However, the present invention is not limited to these tube materials.

  The third connection port 23 has a connected means 5 that can be connected to a connecting means 5 'of a syringe, a blood collection device or an infusion line. A specific aspect of the connected means 5 will be described later.

  A use mode in which the connecting means 5 'of the syringe is connected to the connected means 5 in the third connection port 23 of the three-way cock 2 of the phlebotomy bag system of the present invention will be described.

  In the present invention, the “syringe” means a barrel having at least a connecting means that forms a pair with the connected means at the tip, and a rear end that is open, a gasket that slides liquid-tightly within the barrel, and the gasket And a plunger rod connected to or connectable to. The syringe can be used, for example, to sample a patient's blood when performing hemoptysis using the xenobiotic bag system of the present invention.

  Specifically, first, after connecting the connecting means 5 ′ of the syringe to the connected means 5 in the third connection port 23 of the three-way cock 2, the blood collection needle 1 is punctured into the patient. Alternatively, after the blood collection needle 1 is punctured into the patient, the connecting means 5 ′ of the syringe may be connected to the connected means 5 in the third connection port 23 of the three-way cock 2. However, when the blood collection needle 1 is punctured into the patient first, the third connection port 23 of the three-way stopcock 2 must be closed. This is because the patient's blood does not leak from the third connection port 23 of the three-way stopcock 2. From this, it is preferable to connect the syringe to the third connection port 23 of the three-way cock 2 first. The plunger rod is then pulled to sample the patient's blood. The timing of sampling may be before or after the blood collection therapy is performed, or may be during the bloodlet therapy. Of course, at least the first connection port 21 and the third connection port 23 of the three-way stopcock 2 must be open during sampling.

  By the way, the concept of a syringe may be construed to include an aspect further including an injection needle for puncturing a patient. However, sampling by the syringe using the phlebotomy bag system of the present invention is easy by connecting the connecting means 5 ′ of the syringe to the connected means 5 in the third connection port 23 of the three-way stopcock 2 as described above. Can be implemented. For this reason, as a concept of the syringe in the present invention, at least a tip thereof has a connecting means 5 ′ paired with the above-mentioned connected means 5 and a barrel whose rear end is opened, and a liquid-tight slide in the barrel It is sufficient to use an instrument including a gasket to be connected and a plunger rod connected to or connectable to the gasket, and it is not always necessary to have an injection needle for puncturing a patient.

  Although not shown, a blood collection device may be used in place of the syringe in the sampling. In the present invention, “blood collection device” means a combination of a blood collection tube and a blood collection holder. Here, although the wording in the claims of the present application is “a blood collection device having a connection means”, the connection means is actually provided in the blood collection holder.

  Sampling will be specifically described. First, after connecting the blood collection tube holder connecting means 5 ′ to the connected means 5 in the third connection port 23 of the three-way stopcock 2, the blood collection needle 1 is punctured into the patient. Alternatively, after the blood collection needle 1 is punctured into the patient, the connection means 5 ′ of the blood collection tube holder may be connected to the connection means 5 in the third connection port 23 of the three-way cock 2. However, when the blood collection needle 1 is punctured into the patient first, the third connection port 23 of the three-way stopcock 2 must be closed. This is because the patient's blood does not leak from the third connection port 23 of the three-way stopcock 2. Therefore, it is preferable to connect the blood collection tube holder to the third connection port 23 of the three-way cock 2 first. Next, the blood collection tube is attached to the blood collection tube holder, and the blood of the patient is sampled. The timing of sampling may be before or after the execution of the hemoptyosis therapy, or may be during the execution of the hemoptysis therapy. Of course, at least the first connection port 21 and the third connection port 23 of the three-way stopcock 2 must be open during sampling.

  On the other hand, a usage mode in which the connecting means 5 'of the infusion line is connected to the connected means 5 in the third connection port 23 of the three-way cock 2 of the blood bag system of the present invention (not shown) will be described.

  In the present invention, the “infusion line” refers to an infusion set including at least an infusion bag filled with an infusion solution, a tube, and a connecting means paired with the connected means. The infusion line can be used to infuse the patient mainly before and after the hemostasis therapy using the hemostasis bag system of the present invention.

  Specifically, first, blood collection needle 1 is punctured into the patient. Then, hemoptysis is performed. After phlebotomy is completed, the infusion line connecting means 5 ′ is connected to the connected means 5 in the third connection port 23 of the three-way stopcock 2. However, at this time, the third connection port 23 of the three-way stopcock 2 must be closed. This is because the patient's blood does not leak from the third connection port 23 of the three-way stopcock 2. Then, infusion is started. Of course, during the infusion, at least the first connection port 21 and the third connection port 23 of the three-way cock 2 must be open.

  The infusion performed after phlebotomy is an infusion for administering a medicine for nutrition or hydration of a patient. Examples of the drug used for the infusion include physiological saline, glucose infusion, and amino acid infusion, but are not particularly limited. However, as long as the purpose of hemoptysis is to remove iron accumulated in the liver, it is needless to say that drugs containing a large amount of iron or iron ions are not preferable as drugs used for infusions after hemoptysis. .

  By the way, like the above-mentioned syringe, the concept of the infusion line may be interpreted to include an aspect further including an injection needle for puncturing a patient. However, infusion using the phlebotomy bag system of the present invention can be easily performed by connecting the infusion line to the third connection port 23 of the three-way stopcock 2. For this reason, as a concept of the infusion line in the present invention, it is sufficient to provide at least an infusion bag for filling the infusion solution, a tube, and a connection means 5 ′ paired with the connected means 5, and the patient is always punctured. It is not necessary to have an injection needle for the purpose.

  In the present invention, the “connected means” refers to an instrument that can be connected to a connecting means provided in a syringe, a blood collection device (blood collection holder) or an infusion line, and has a structure that forms a pair with the connecting means. Say. As an aspect of the connected means 5 and the connecting means 5 ′, for example, a male luer connector can be selected as the connected means 5 and a female luer connector can be selected as the connecting means. Of course, the male luer connector and the female luer connector may be reversed. Moreover, as another aspect of the connected means 5 and connecting means 5 ′, for example, a rubber mixed injection device may be selected as the connected means 5, and a needle that pierces the rubber plug of the rubber mixed injection device may be selected as the connecting means. it can.

  Moreover, it is desirable that the material of the connected means 5 and the connecting means 5 'is made of only resin. This is because the purpose of hemoptysis is to remove iron accumulated in the liver. Therefore, it is desirable to use a material other than iron for the members other than the needle tube in the blood collection needle 1. As such a mode, a male luer connector may be selected as the above-mentioned connected means 5 and a female luer connector may be selected as the connecting means. Moreover, even if it is the aspect which selects the needle | hook which penetrates the rubber stopper of the said rubber mixed injection instrument as a connection means as the to-be-connected means 5, it inserts the rubber stopper of the said rubber mixed injection instrument as a connection means. The needle to be passed is preferably a so-called plastic needle. The “resin” in the present invention includes not only medical polymers such as polyethylene, polypropylene, polyethylene terephthalate, polystyrene and polycarbonate, but also silicon resins.

  Further, among the above-described embodiments, it is desirable that the connecting means 5 'and the connected means 5 have a luer taper structure. That is, the aspect in which a male luer connector is selected as the above-mentioned connected means 5 and a female luer connector is selected as the connecting means 5 'is most desirable. This is for further strengthening the coupling between the connecting means 5 ′ and the connected means 5. Since the connection between the connecting means 5 ′ and the connected means 5 is strong, the risk of infection with hepatitis C virus caused by the leakage of the patient's blood can be reduced.

  As described above, since the phlebotomy bag system of the present invention has the connected means 5 at the third connection port 33 of the three-way stopcock 3, the blood collection needle once punctured is pulled out from the patient, and further, sampling or infusion is performed. There will be no new punctures. Thus, the phlebotomy bag system of the present invention can maintain the patient's QOL.

  The phlebotomy bag system of the present invention includes a blood collection bag 3 that is not filled with an anticoagulant.

  In the present invention, the “blood collection bag” refers to a container for storing blood collected from a human. As the blood collection bag 3, a bag similar to a blood bag used for so-called blood transfusion can be used. That is, examples of the material for the blood collection bag 3 include polyethylene and polyvinyl chloride, but the material for the blood collection bag 3 of the present invention is not limited to these materials. Further, the capacity of the blood collection bag 3 is not particularly limited because it can be appropriately set by those skilled in the art with reference to the amount of blood collected in the hemoptysis therapy. For example, the suitable blood collection bag 3 has a capacity of 20 to 1,000 mL. In particular, 200 mL and 400 mL, which are sizes that are commonly used by workers, that conform to blood bags used for so-called blood transfusions, can be said to be a preferred embodiment. Incidentally, since it is assumed that excessive blood collection is actually performed, the volume of these blood bags is formed to a capacity slightly larger than 200 mL or 400 mL. For example, the maximum capacity of a blood bag used for a 400 mL blood transfusion is 485 mL. With this capacity, the medical device manufacturer can use the conventional blood bag production line for blood transfusion in producing the phlebotomy bag system of the present invention, so that the production cost can be kept low. In addition, since the volume of 200 mL is a basic unit in Japanese phlebotomy, it is desirable that the volume of the blood collection bag is 200 mL or 400 mL, which is twice as large.

  As described above, the blood bag used for transfusion of 200 mL and 400 mL is formed to have a slightly larger capacity. Confirmation of the prescribed amount of blood collection in blood collection therapy can be performed mainly by weighing. However, in order to more easily check the blood collection amount, it is preferable to provide a memory 31 indicating the blood collection amount on the wall surface of the blood collection bag 3. The upper end seal portion of the blood collection bag 3 further includes a hanging hole 32 so that the amount of blood collected by the memory 31 can be confirmed accurately.

  As described above, the blood contained in the blood collection bag of the phlebotomy bag system of the present invention is mainly the blood of a chronic hepatitis C patient. For this reason, it is desirable to prevent the blood from flowing backward from the blood collection bag. If the operator does not mistakenly operate the three-way stopcock, that is, after blood collection, the blood stored in the blood collection bag will not flow backward if the second connection port of the three-way stopcock is always closed. . However, as described above, the phlebotomy bag system of the present invention performs infusion by connecting to an infusion line after phlebotomy. For this reason, it is desirable to further reduce the risk of hepatitis C virus infection associated with operator error.

  Hereinafter, desirable embodiments of the phlebotomy bag system of the present invention will be described. Although these desirable aspects may not necessarily be performed, it is possible to further reduce the risk that an operator who performs hemoptysis will be infected with hepatitis C virus, and to further improve the QOL of patients who receive hemoptysis. From a possible viewpoint, this is an embodiment to be implemented unless there are special circumstances.

  First, it is desirable that the blood collection bag 3 of the present invention is not filled with an anticoagulant. This is because the blood collection bag system of the present invention is not used for blood transfusion in the first place. Rather, the blood contained in the blood collection bag 3 of the present invention is mainly blood from patients with chronic hepatitis C and should not be used for transfusion. And the blood of a hepatitis C patient can be coagulated by not being filled with the anticoagulant. Therefore, it is possible to prevent a medical accident in which the blood of a hepatitis C patient stored in the blood collection bag 3 of the present invention is mistakenly transfused to another person and infected with the hepatitis C virus.

  Further, it is desirable that the second tube 42 is provided with the backflow preventing means 6.

  In the present invention, “backflow prevention means” refers to an instrument for preventing backflow of bubbles of human blood contained in the blood collection bag 3. The backflow prevention means 6 is provided for the purpose of preventing air from entering a human blood vessel when performing the above-mentioned infusion. Examples of the backflow prevention means 6 include forceps (referring to an instrument that holds a tube and closes a flow path) and a backflow prevention valve (refers to an instrument that closes a flow path using a valve). The backflow prevention means 6 is not necessarily limited as long as it can prevent backflow of human blood contained in the blood collection bag, but it is preferably a backflow prevention valve. The backflow prevention valve is not used for a blood bag used for blood transfusion because there is no circumstance that the infusion is performed simultaneously. That is, it is not easy for those skilled in the art to provide the second tube with a backflow prevention valve.

  Furthermore, the present invention may be a kit embodiment including the above-described phlebotomy bag system and a syringe provided with the connecting means described above, or a kit embodiment including an infusion line including the phlebotomy bag system and the connecting means described above. .

[Modification 1]
Hereinafter, modified examples will be described. The amount of blood collected during hemoptyosis can be set as appropriate by a doctor. For this reason, it is preferable that the blood collection bag 3 is an aspect which enables blood collection in a wide range. As an aspect of such a blood collection bag 3, an aspect including two or more rooms partitioned from each other can be cited. FIG. 2 is a view showing a modified example of the blood collection bag 3 ′. The blood collection bag 3 ′ first includes a first chamber 33 and a second chamber 34. The first chamber 33 is completely partitioned from the second chamber 34. The number of rooms in this aspect is not particularly limited as long as it is 2 or more. Each of the first chamber 33 and the second chamber 34 is connected by branched second tubes 421 and 422. Since the blood collection bag 3 ′ is formed by integrating the first chamber 33 and the second chamber 34, handling of the blood collection bag at a medical site is facilitated. In addition, according to the blood collection bag having this structure, the operator can easily confirm that the blood collection of 200 mL has been completed, for example, by confirming that the first chamber 33 having a capacity of 200 mL is filled with blood. Can do. Blood collection into the second chamber 34 is started by holding the second tube 421 with the forceps 61 in the branched second tube 421.

[Modification 2]
FIG. 3 shows another embodiment that enables blood collection over a wide range. As shown in FIG. 4, a second blood collection bag is newly provided in the first connected means 5A (not indicated in the drawing) in the third connection port 2A3 of the first three-way cock 2A. The aspect which connects an additional bag system is also mentioned. In this aspect, the bag system including the first blood collection bag 3A is referred to as a basic bag system, and is referred to as an additional bag system that is additionally connected to the basic bag system. FIG. 4 shows an enlarged view of the broken line area in FIG. In this embodiment, the first connected means 5A in the third connection port 2A3 of the three-way stopcock 2A is used for connection of the second blood collection bag 3B. For this reason, in order to perform the above-described sampling and / or infusion, the second blood collection bag 3B to be newly connected is provided with the second three-way stopcock 2B. The first connection port 2B1 of the second three-way cock 2B is the connected means 5A in the third connection port 2A3 of the first three-way cock 2A? Additional connecting means 7 for connecting to The second connection port 2B2 of the second three-way cock 2B is connected to the second blood collection bag 3B via the third tube 43. And 3rd connection port 2B3 of 2nd three-way cock 2B has the 2nd to-be-connected means 5B connectable with the connection means 5 'of a syringe, a blood collection device, or an infusion line. In this aspect, when the blood collection of the first blood collection bag 3A is insufficient, the additional blood collection line X including the second blood collection bag 3B can be connected as appropriate.

  The phlebotomy system of the present invention will further spread phlebotomy for patients with chronic hepatitis C.

It is a figure which shows one embodiment of the phlebotomy bag system of this invention. It is a figure which shows the modification of the phlebotomy bag system of this invention. It is a figure which shows the modification different from FIG. 4 of the phlebotomy bag system of this invention. FIG. 6 is an enlarged view of a broken line area in FIG. 5.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Blood collection needle 11 Blood collection needle storage mechanism 12 Fixing member 2, 2A, 2B Three-way cock 21, 21, A1, 2B1 1st connection port 22, 2A2, 2B2 2nd connection port 23, 2A3, 2B3 3rd connection port 3, 3 ', 3A, 3B Blood collection bag 31 Memory 32 Suspension hole 33 First chamber 34 Second chamber 41 First tube 42, 421, 422 Second tube 43 Third tube 5, 5A, 5B Connected means ( Female luer connector)
6 Backflow prevention means 5 "Additional connection means (male luer connector)

Claims (1)

A bag system for performing phlebotomy on humans,
A blood collection needle,
A three-way stopcock having first, second and third connection ports;
With a blood collection bag,
The blood collection needle is a winged needle provided with a fixing member, and has a blood collection needle protection member that slides to accommodate the blood collection needle,
The blood collection needle is connected to the first connection port of the three-way stopcock via a first tube,
The blood collection bag is connected to the second connection port of the three-way stopcock via a second tube,
The second tube is provided with a backflow prevention means,
The third connection port of the three-way stopcock has a connected means connectable with a syringe, a blood collection device, or a connection means of an infusion line,
The blood collection bag is not filled with an anticoagulant,
The blood collection bag has two hanging holes in the upper seal part,
The blood collection bag, phlebotomy bag system and having a memory pinpointing blood amount in relation to the prepared hole hanging Oite the the wall surface.

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