JPH0439860B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to connected blood collection tubes used for blood collection and a blood collection device equipped with the same, and more specifically to blood collection tubes used for blood collection once. By operation, 2
The present invention relates to a connected blood collection tube capable of obtaining more than one blood sample, and a blood collection device equipped with the same.

[Conventional technology]

Conventional blood sampling equipment used in clinical tests at hospitals and other facilities consists of several types of vacuum blood collection tubes, such as those for serum tests, biochemical tests, blood cell tests, blood sugar tests, and coagulation factor tests, and usually multiple needles. The necessary blood sample was obtained by performing several blood sampling operations from a patient or other examinee using a single blood sampling needle.

[Problem that the invention seeks to solve]

However, performing blood sampling more than once as described above using conventional blood sampling equipment is not only time-consuming, but also involves the use of vacuum blood sampling tubes attached to blood sampling needles inserted into the patient's blood vessels. The more times the blood is pierced, the greater the risk of blood vessel damage, etc., and the repeated blood sampling procedure causes mental and physical pain to the examinee. . Furthermore, because the vacuum blood collection tube is inserted and removed several times through a single blood collection tube holder, the air in the blood collection work chamber comes into contact with the part extending into the blood collection needle holder, causing the air to be contained in the air. There were concerns that there was a risk that the collected blood could become contaminated due to the adhesion of various bacteria, etc. Therefore, it is natural that a blood sampling device that can obtain a plurality of blood samples from a patient through one blood sampling operation is desired.

That is, the present invention has been made in view of the above circumstances, and the first object is to easily store blood obtained by one blood collection operation into a plurality of blood collection tubes each having a different test item, The second purpose is to provide a connected blood collection tube that can separate multiple blood collection tubes for blood tests with different test items and obtain blood samples for the required number of test items.The second purpose is to achieve the first goal. In addition to the purpose, it is possible to collect blood samples for the required number of test items in one blood collection operation, which prevents blood vessel damage, invasion of bacteria, etc., and mental and physical damage to the examinee. Our goal is to provide blood sampling equipment that causes no pain.

[Means for solving problems]

In order to achieve the first object, the blood collection connector of the present invention connects a plurality of bottomed tubes with one end open and the other end closed in parallel, and connects them to the openings.
Each of the tubes is equipped with a stopper, and the bottomed tubes are filled or unfilled with reagents for different test items, and are maintained at a reduced pressure depending on the amount of blood collected. , and are connected via a connecting means that can be separated and connected as necessary.

In addition, in order to achieve the second object, the blood sampling device of the present invention connects a plurality of bottomed tubes in parallel, one end of which is open and the other end of which is closed, and each of the openings is provided with a stopper. The bottomed tube is filled or unfilled with reagents corresponding to different test items, and is maintained at a reduced pressure depending on the amount of blood collected. A connected blood collection tube that is connected via a connection means that can be separated and connected according to the requirements, and a cylindrical blood collection tube that can accommodate the blood collection tube connector and has one end open and the other end closed. The blood collection tube holder consists of one blood collection needle protruding outside the closed end surface of the blood collection tube holder, and a plurality of connected blood collection tubes each communicating with the blood collection needle and branching and protruding inside the holder. and a plug piercing needle that can pierce each of the plugs when the plug is housed inside.

[Effect]

According to the connected blood collection tube of the first invention having the above structure, since a plurality of blood collection tubes each having different test items can be used in a connected state when blood is collected, the collected blood can be tested. It is easy to accommodate multiple blood collection tubes with different items, and when necessary, the connection can be released and sorted into blood collection tubes for each test item, making it possible to test a large amount for each test item. In addition, the second
According to the blood sampling device of the invention, the blood collected with one blood sampling needle is transferred to the connected blood sampling tube through the plug-piercing needle formed in the required number of pieces to collect necessary test items. Each is housed in a blood vessel.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view showing an embodiment of the present invention. In the embodiment shown in this figure, a first reduced pressure blood collection tube (blood collection tube) 2 and a second reduced pressure blood collection tube (blood collection tube) 3 are shown in which the pressure inside the tube is reduced.
A connected blood collection tube 1 is shown, which is formed by connecting two vacuum blood collection tubes. These first and second reduced pressure blood collection tubes 2 and 3 have different test items. Reference numeral 5 denotes a connecting portion (connecting means) thereof, which is formed into an uneven shape at one or several places on the surface where both tube sides of the connected blood collection tube 1 touch,
The connecting portion 5 is fitted to connect both the reduced pressure blood collection tubes 2 and 3. The connection part 5 shown in this embodiment merely shows the simplest and best connection method, and is not limited to this method. It is sufficient if it is configured as follows.
Reference numeral 4 denotes a rubber stopper (stopper body) that seals the open end of each of the first and second reduced pressure blood collection tubes 2 and 3 of the connected blood collection tube 1, and can be occluded.

Reference numeral 6 denotes a blood collection tube holder used for the connected blood collection tube 1. This blood collection tube holder 6 only needs to be capable of collecting blood via the connected blood collection tube 1, and its shape and size are not specified. Reference numeral 8 denotes a branched blood collection needle according to the present invention, which consists of one blood vessel piercing part (blood collection needle) 10 and two rubber plug puncturing parts (plug body piercing needle) 9 for a needle base 11; The rubber plug puncture part 9
A rubber chip 12 is encapsulated therein. The material for the blood collection tube connector 1 of the present invention is preferably glass, acrylonitrile resin, or polyethylene terephthalate, which have excellent gas barrier properties.

Next, with reference to the conventional blood sampling method illustrated in FIG. 2, a method of using the blood sampling device according to the present invention and a blood sampling operation will be described. First, there is a connected blood collection tube 1 in which first and second vacuum blood collection tubes 2 and 3 having different required test items are connected, a blood collection tube holder 6 corresponding to the connected blood collection tube 1, and a blood collection tube corresponding to the holder 6. A blood sampling device of the present invention consisting of a branched needle 8 is prepared. Then, the blood sampling branch needle 8 corresponding to the desired blood sampling tube holder 6 is set. The blood sampling branch needle 8 is formed similarly to the conventional example described below.
That is, in this conventional example, as shown in FIG. said,
The blood collection needle is housed in a blood collection needle case 16 consisting of a protector 13 and a case cap 14. The multi-needle 15 housed in the blood collection needle case 16 has a blood vessel piercing portion 10 on the protector 13 side.
However, a rubber plug puncture portion 9 covered with a rubber tip 12 is formed on the case cap 14 side, and a screw 17 is formed on the needle base 11, respectively. Although the blood sampling needle case 16 of the blood sampling needle 8 according to the present invention is not shown, the blood sampling needle 8 is housed in the same manner as the blood sampling needle case 16 described above.

Next, as for the method of setting the blood collection needle 8 into the blood collection tube holder 6, first, the case cap 14 of the blood collection needle case 16 is removed from the blood collection branch needle 8, and the rubber stopper puncture part 9 of the blood collection branch needle 8 is inserted into the blood collection tube. The screw 17 of the needle base 11 is screwed into the blood collection tube holder 6 so that it is located inside the holder 6. and,
At this time, the tip of the rubber tip 12 enclosing the rubber stopper puncture part 9 is always closed, and when the first and second vacuum blood collection tubes 2 and 3 are inserted into the blood collection tube holder 6, the tip of the rubber tip 12 is closed. It is pressed together with the rubber tip 12 through the stopper 4. Therefore, the tip of the rubber tip 12 is pierced by the needle tip of the rubber stopper puncture section 9 through the rubber stoppers 4 of the first and second vacuum blood collection tubes 2 and 3, and is simultaneously pierced by the rubber stopper 4. .

Next, the protector 13 is removed from the blood sampling branch needle 8, and the blood vessel piercing part 1 with the blood sampling tube holder 6 is removed.
0 into the blood sample recipient's venous blood vessel. A connected body of blood collection tubes stores various blood coagulation promoters, blood anticoagulants, blood separation gels, blood separation members, etc. suitable for different test items in the first and second vacuum blood collection tubes 2 and 3. 1 into the blood collection tube holder 6,
Pierce each rubber plug puncture part 9 through the rubber plug 4,
Since its tip reaches the inner space of the first and second reduced pressure blood collection tubes 2 and 3, the degree of reduced pressure in the inner space causes the blood in the blood vessel to flow into the first blood vessel by an amount corresponding to the degree of reduced pressure.
Then, the blood flows into the internal spaces of the second vacuum blood collection tubes 2 and 3, and a desired amount of blood is collected. At this time, since a large amount of blood is collected at one time, special care must be taken to avoid any adverse effects on the human body of the person receiving the blood collection.

In this way, after blood is drawn, the connected blood collection tube 1 is pulled out from the blood collection tube holder 6, and the first vacuum blood collection tube 2 containing anticoagulant A and the second vacuum blood collection tube containing coagulation promoter B are removed.
The reduced pressure blood collection tubes 3 are arranged in a testing device (not shown) in a set state and tested. Alternatively, the first reduced pressure blood collection tube 2 and the second reduced pressure blood collection tube 3 may be separated from the connecting portion 5 and provided to separate testing devices, allowing for large-volume processing together with blood samples collected from other people.

Further, before blood collection, blood collection tubes containing necessary items can be freely combined according to the test items and connected at the connecting portion, and then used for blood collection.

FIG. 3 shows another embodiment of the connected blood collection tube according to the present invention. As is clear from this figure, the tube body is the same as the connected blood collection tube 1 shown in FIG. 1, but the shape of the stopper 21 is different. This plug body 2
1 is sealed at the open end of the tube in a double-layered state of a first plug film 22 made of a gas barrier film and a second plug film 23 made of a resealable film. The plug film 22 used in this example is a 15 μm thick film of acrylonitrile resin barrels (Mitsui Toatsu Barrets 210) on which aluminum is vapor-deposited and further laminated with a 15 μm nylon film.
The plug film 23 is made of a natural rubber sheet with a thickness of 1.0 mm in order to provide resealability.
The plug film 22 and the second plug film 23 were attached with rubber glue.

〔Effect of the invention〕

By using the connected blood collection tube of the present invention configured as described above, it becomes easy to collect blood into a plurality of blood collection tubes for different test items in one blood collection operation, and Since multiple blood collection tubes can be separated, it goes without saying that work efficiency is improved, but since the blood is collected at exactly the same time, it is difficult to use blood in exactly the same condition as a sample after blood collection for multiple tests. can be expected to improve the accuracy of testing. Furthermore, by using the blood sampling device of the present invention, the mental and physical burden of blood sampling needle penetration on the blood sample recipient will be reduced, there will be no risk of blood vessel damage, invasion of bacteria, etc., and the structure will be improved. Since it is simple, it is easy to mold and process, and it has many advantages, such as being able to be mass-produced at low cost.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a connected blood sampling tube according to the present invention and a blood sampling device equipped with the same, FIG. 2 is a sectional view and an exploded perspective view of a conventional blood sampling device, and FIG. FIG. 2 is a perspective view showing an embodiment of the invention. 1... Connected blood collection tube, 2... First reduced pressure blood collection tube (blood collection tube), 3... Second reduced pressure blood collection tube (blood collection tube), 4...
Rubber stopper (stopper body), 5... Connection part (connection means), 6...
... Blood collection tube holder, 8 ... Blood collection branch needle, 9 ... Rubber stopper puncture section (stopper piercing needle), 10 ... Blood vessel piercing section (blood collection needle), 21 ... Stopper.

Claims (1)

[Scope of Claims] 1. A plurality of bottomed tubes with one end open and the other end closed are connected in parallel, and a stopper is attached to each opening, and each of the bottomed tubes has an open end and a closed end. The connecting means is filled or unfilled with reagents corresponding to different test items and is maintained in a reduced pressure state depending on the amount of blood to be collected, and the bottomed tube body is connected so as to be able to be separated and connected as necessary. A connected blood collection tube characterized by being connected via. 2 A plurality of bottomed tubes with one end open and the other end closed are arranged in parallel and connected, and a stopper is attached to each of the openings, and the bottomed tubes are individually configured to meet different test items. The tubes are filled or unfilled with reagents and maintained at a reduced pressure depending on the amount of blood collected, and the bottomed tubes are connected via a connecting means that can be separated and connected as necessary. The blood collection tube holder is made up of a blood collection tube connected to the blood collection tube, and a cylindrical blood collection tube holder that can accommodate the blood collection tube connector and has one end open and the other end closed, and the blood collection tube holder protrudes outside of the closed end surface. One blood collection needle, and a plug needle that communicates with the external blood collection needle and that can pierce each of the plugs when the plurality of connected blood collection tubes that branch and protrude into the inside of the blood collection tube holder are housed inside. A blood sampling device characterized by comprising a threading needle.