JP4966776B2 - Blood collection holder - Google Patents

Description

  The present invention relates to a blood collection holder used for facilitating blood collection using a vacuum blood collection tube, and more specifically, a mounting portion to which a double-ended needle type blood collection needle or a luer adapter having needle tips at both ends is attached. And a blood collection holder into which a blood collection tube is inserted from the side opposite to the side on which the mounting portion is provided.

  When collecting blood using a vacuum blood collection tube, first, a double-ended vacuum blood collection needle or a luer adapter is attached to a blood collection needle attachment portion of a cylindrical blood collection holder. A double-ended vacuum blood collection needle is provided in the middle of a hollow needle having a first needle tip inserted into a blood vessel and a second needle tip pierced by a plug of the vacuum blood collection tube And a hub as a blood collection needle attached portion. The luer adapter has a needle tip that is pierced by the stopper of the vacuum blood collection tube, and the other end is tapered so that a winged needle or injection needle can be fitted, and in the middle of the needle tip and the taper part. It has a hub so that it can be attached to the blood collection holder. On the other hand, the vacuum blood collection tube has a bottomed tubular container having an opening at one end, and a stopper attached so as to close the opening of the tubular container, and the inside is decompressed.

  For blood collection, first, the vacuum blood collection needle is attached to the blood collection needle mounting portion of the blood collection holder so that the second needle tip is located in the blood collection holder. When using a luer adapter, attach the luer adapter to the holder, and then attach a winged needle or injection needle to the luer adapter. Thereafter, the first needle tip, the winged needle or the injection needle is punctured into the vein, while the vacuum blood collection tube is inserted from the opening side of the blood collection holder, and the plug of the vacuum blood collection needle is inserted into the second needle. Prick through the tip. As a result, the vein and the vacuum blood collection tube communicate with each other. Since the pressure in the vacuum blood collection tube is previously lowered, blood is guided to the vacuum blood collection tube due to the pressure difference between the vein and the vacuum blood collection tube.

  At the start of blood collection, since the pressure difference is large, blood flows into the vacuum blood collection tube vigorously. The pressure difference decreases as blood collection progresses. The blood collection ends when the pressure in the vein and the pressure in the vacuum blood collection tube become equal.

  The conventional blood sampling holder as described above is disclosed, for example, in Patent Document 1 below. The blood collection holder disclosed in Patent Document 1 is made of a synthetic resin integral molding and has a cylindrical shape. The direction in which the hollow needle of the vacuum blood collection needle attached to the blood collection needle attachment portion extends coincides with the central axis of the cylindrical blood collection holder. Thereby, the second needle tip side of the vacuum blood collection needle can be surely pierced into the thin wall portion scheduled to be pierced by the vacuum blood collection needle among the plugs of the vacuum blood collection tube. In addition, since the direction in which the hollow needle of the vacuum blood collection needle extends and the central axis of the blood collection holder coincide with each other, the directionality in the structure in which the vacuum blood collection needle and the blood collection holder are connected during blood collection can be eliminated. The blood collection operation can be performed without difficulty.

On the other hand, in Patent Document 2 below, the direction in which the hollow needle portion extending from the blood collection needle mounting portion of the blood collection needle toward the first needle tip inserted into the blood vessel coincides with the central axis of the blood collection holder. It is not in the direction of crossing. Therefore, it is possible to reduce the angle formed by the direction in which the hollow needle portion extends from the hub of the vacuum blood collection needle toward the first needle tip and the direction in which the blood vessel extends. Accordingly, the first needle tip is inserted into the tube from one wall surface of the blood vessel, and it is difficult to penetrate the blood vessel wall on the opposite side. Therefore, when collecting blood, the first needle tip can be inserted into the blood vessel and reliably maintained. Also in the structure described in Patent Document 2, when the vacuum blood collection tube is attached to the blood collection holder, the hollow needle portion located in the blood collection holder, that is, the second needle tip from the hub as the blood collection needle attached portion. The hollow needle portion toward the center is aligned with the central axis of the blood collection holder.
JP 58-183172 A JP 2003-153883 A

  As described above, at the time of vacuum blood collection, since the pressure difference between the pressure in the vacuum blood collection tube and the pressure in the blood vessel is the largest at the start of blood collection, blood is vigorously flowed into the vacuum blood collection tube at the start of blood collection. For this reason, blood may foam in the vacuum blood collection tube.

  In recent years, shortening of examination time has been strongly demanded in clinical examinations. Therefore, shortening of each step is required in a series of steps of blood collection-blood coagulation-centrifugation-measurement. Therefore, in order to shorten the time until the blood coagulates, the coagulation accelerator may be stored in advance in the vacuum blood collection tube. When blood bubbles in the vacuum blood collection tube as described above and comes into contact with a coagulation accelerator or the like in this state, coagulation proceeds in the bubbled state. If the blood coagulates in a foamed state, bubbles will remain in the serum after centrifugation. For this reason, when the serum is aspirated by the nozzle of the clinical test apparatus, there is a possibility that the serum cannot be rapidly aspirated or a part of the foam coagulated with the serum is aspirated. Further, if bubbles coagulated by engulfing red blood cells are present in the serum, red blood cell components may be mixed in the serum and affect the blood test value.

  Therefore, there is a strong demand to suppress the bubbling of blood as described above.

  Further, in the vacuum blood sampling method described in Patent Document 2, the hollow needle portion on the side inserted into the blood vessel is extended in a direction intersecting with the central axis of the blood sampling holder, and the hollow needle portion inserted into the blood sampling tube Is aligned with the central axis of the blood collection holder. Therefore, a normal blood collection needle in which the hollow needle portion inserted into the blood vessel and the hollow needle portion inserted into the vacuum blood collection tube extend in a straight line cannot be used as the vacuum blood collection needle. I had to prepare a new vacuum blood collection needle. Therefore, the cost has been high.

  An object of the present invention is to provide a blood collection holder that can surely suppress the bubbling of blood at the start of blood collection during vacuum blood collection, and does not require a special vacuum blood collection needle or luer adapter, in view of the current state of the prior art described above. It is to provide.

  According to the present invention, the first needle tip for collecting blood is provided at one end of the hollow needle, and the second needle tip for guiding blood to the blood collection tube is provided at the other end. A double-ended blood sampling needle having a mounted portion to be mounted on the blood sampling holder between the second needle tips and having a hollow needle portion whose tip is the second needle tip extending from the mounted portion; A blood collection holder to which a luer adapter having a mounted portion to be mounted on the blood sampling holder and a hollow needle portion extended from one end of the mounted portion is mounted, wherein the blood sampling needle or the luer adapter is mounted A mounting portion to which the mounted portion is fixed is provided on one end side so that the hollow needle portion extends from the portion into the blood sampling holder, and an opening for inserting a blood collection tube is provided on the other end side. In the state where the blood collection needle is mounted, the mounted portion The mounting portion is configured to fix the blood collection needle or the luer adapter so that the extending direction of the empty needle portion intersects the central axis of the cylindrical blood collection holder, A blood collection holder is provided.

  Preferably, the angle formed by the hollow needle portion of the blood collection needle or luer adapter and the central axis of the blood collection holder is in the range of 2 to 25 degrees. When the angle formed by the extending direction of the hollow needle portion toward the second needle tip and the central axis of the blood collection holder is in the range of 2 to 25 degrees, the blood guided into the vacuum blood collection tube is further increased. Since it surely flows down along the inner wall of the vacuum blood collection tube, it is possible to prevent blood bubbles more reliably.

  In the blood collection holder according to the present invention, preferably, the cylindrical blood collection holder has a cylindrical side surface portion and an end surface portion connected to one end side of the cylindrical side surface portion, and the mounting portion includes: The opening is provided at a position shifted from the approximate center of the end surface portion, and has an opening into which the mounted portion is inserted and held. Preferably, a holding mechanism for holding the mounted portion of the blood collection needle or luer adapter is provided in the opening of the mounting portion.

  In the blood sampling holder of the present invention, the holding mechanism includes an elastic locking piece protruding inward from an inner surface of the opening of the mounted portion, and a stepped portion where the elastic locking piece is merged in the mounted portion. You may have.

  The holding mechanism may include a female screw portion formed on an inner surface of the opening of the mounting portion, and a male screw portion formed on an outer surface of the mounted portion of the blood collection needle or luer adapter. .

  According to the blood collection holder of the present invention, the extending direction of the hollow needle portion in the blood collection holder of the vacuum blood collection needle or the luer adapter is the direction intersecting with the central axis direction of the blood collection holder. When the vacuum blood collection tube is inserted into the blood collection holder and the stopper of the vacuum blood collection tube is pierced by the hollow needle portion, the extending direction of the hollow needle portion is the direction intersecting the axial direction of the vacuum blood collection tube. Yes. For this reason, even if blood flows into the vacuum blood collection tube vigorously at the start of blood collection, the blood does not immediately fall to the bottom of the vacuum blood collection tube, but tends to flow downward along the inner wall of the vacuum blood collection tube. . Therefore, bubbling of blood at the start of vacuum blood collection can be suppressed.

  Therefore, by using the blood collection holder according to the present invention, even if a coagulation accelerator or the like is stored in the vacuum blood collection tube in advance, it is difficult for the blood to coagulate with foaming. Therefore, after centrifuging, if you try to aspirate the serum with the suction nozzle of the clinical laboratory equipment, the serum can be surely aspirated, the nozzle will be clogged, or the clots in the foamed part will be mixed in the serum There is no fear. Therefore, it is possible to shorten the time required for obtaining the measurement value from the vacuum blood collection necessary for the clinical examination, and it is possible to increase the reliability of the examination value.

  In addition, a normal vacuum blood collection needle is used in which a hollow needle portion where the blood collection target portion is directed toward the first needle tip and a hollow needle portion where the blood collection needle attachment portion is directed toward the second needle tip are connected in a straight line. be able to. Even when a luer adapter is attached, a normal luer adapter can be used. Therefore, a special vacuum blood collection needle and a luer adapter are not required, so that the cost is hardly increased.

  Furthermore, since the extending direction of the hollow needle portion from the attached portion is a direction intersecting with the central axis direction of the blood collection holder, when a normal vacuum blood collection needle is used, the first needle tip is attached from the attached portion. The hollow needle portion that extends toward the center of the blood sample is also extended in a direction that intersects with the central axis of the blood collection holder in an oblique direction. Accordingly, the angle formed by the hollow needle portion of the vacuum blood collection needle from the blood collection needle mounting portion toward the first needle tip and the direction in which the blood vessel extends can be reduced, whereby the blood vessel formed by the first needle tip is formed. It is also possible to reliably reduce the risk of penetration.

  Hereinafter, the present invention will be clarified by describing specific embodiments of the present invention with reference to the drawings.

  FIGS. 2A to 2C are a plan view, a front sectional view, and a bottom view of a blood collection holder according to the first embodiment of the present invention.

  The blood collection holder 1 has a cylindrical holder main body 2. The cylindrical holder main body 2 has a cylindrical shape. However, other shapes such as a rectangular tube shape may be used.

  An end surface 3 is connected to one end of the cylindrical portion of the holder main body 2. The end surface portion 3 has a circular outer shape, and a mounting portion 4 is provided at a position deviated substantially from the center. The mounting portion 4 protrudes upward from the end surface portion 3 and has a cylindrical portion 5 having a diameter smaller than that of the holder main body portion 2. An opening 5 a is formed in the cylindrical portion 5.

  In the opening 5a, a plurality of holding projections 5b, 5b, 5b extending inward from the inner surface of the cylindrical portion 5 and a plurality of elastic locking pieces 5c, 5c, 5c are provided. One elastic locking piece 5c and one holding projection 5b are opposed to each other in the opening 5a. The elastic locking piece 5c has a free end at its tip, and is formed so that it can move in the vertical direction by elasticity. By moving the tip in the vertical direction, the distance between the tip of the elastic locking piece 5c and the holding projection 5b is increased.

  An opening 2 a is formed on the other end side of the cylindrical main body 2. The opening 2a is provided for inserting a vacuum blood collection tube to be described later.

  Moreover, in the cylindrical main-body part 2, the flange part 2b extended in the circumferential direction outer side is provided in the side in which the opening 2a is provided. The flange portion 2b is provided for facilitating the standing of the blood collection holder 1 and for facilitating the insertion operation of the vacuum blood collection tube during blood collection. Moreover, in order to prevent rolling when it puts on the desk in the state where the blood-collecting holder was placed sideways, it has an elliptical shape or a similar shape thereto.

  The blood collection holder 1 of the present embodiment is characterized in that the central axis direction of the opening 5a provided in the protrusion 5 in the mounting portion 4 intersects the central axis direction X of the blood collection holder 1, thereby In the state where the vacuum blood collection needle is mounted, which will be described later, the portion of the vacuum blood collection needle going from the blood collection portion to the second needle tip and the central axis direction X of the blood collection holder 1 are crossed. . This will be described with reference to FIGS.

  In vacuum blood collection, first, a vacuum blood collection needle 6 is attached to the blood collection holder 1 as shown in FIG. The vacuum blood collection needle 6 has a blood collection needle attachment portion 7 as an attachment portion. The blood collection needle mounting portion 7 is a hub made of synthetic resin in this embodiment. A hollow needle 8 is inserted through the blood collection needle attachment portion 7, and the hollow needle 8 is fixed to the blood collection needle attachment portion 7. The hollow needle 8 has a first needle tip 8a at one end and a second needle tip 8b at the other end. The first needle tip 8a is a needle tip to be inserted into the blood vessel, and the second needle tip 8b is the needle tip on the side that pierces the plug of the vacuum blood collection tube.

  Accordingly, the hollow needle 8 includes a first hollow needle portion 8c from the blood collection needle attached portion 7 toward the first needle tip 8a and a second hollow from the blood collection needle attached portion 7 toward the second needle tip 8b. A needle portion 8d. A rubber sheath 9 is attached so as to cover the second hollow needle portion 8d. The rubber sheath 9 is provided to prevent leakage of blood that has flowed into the hollow needle 8 at the start of vacuum blood collection to the outside.

  The vacuum blood collection needle 6 has one hollow needle 8, and the first and second hollow needle portions 8c and 8d are connected. However, the first and second hollow needle portions 8c and 8d may be separate bodies. In any case, since the first hollow needle portion 8c and the second hollow needle portion 8d are general-purpose vacuum blood collection needles that extend in a straight line, it is necessary to prepare an expensive special vacuum blood collection needle. There is no.

  As shown in FIG. 3, the vacuum blood collection needle 6 is inserted into the opening 5a of the blood collection holder 1 from the second needle tip 8b side, and the blood collection needle attached portion 7 is attached to the attachment portion 4, thereby vacuum blood collection. The needle 6 is attached to the blood collection holder 1 and fixed.

  In the present embodiment, the direction in which the opening 5 a extends intersects the central axis direction X of the blood collection holder 1. Therefore, in a state where the vacuum blood collection needle 6 is mounted on the blood collection holder 1, the direction in which the first hollow needle portion 8c and the second hollow needle portion 8d extend is at an angle θ with the central axis direction X of the blood collection holder 1. There is no.

  Therefore, as shown in FIG. 1, after the vacuum blood collection needle 6 is attached, the first needle tip 8a of the hollow needle 8 of the vacuum blood collection needle 6 is pierced through the blood vessel, and then the vacuum blood collection tube 10 is inserted into the blood collection holder 1. When blood collection is started, blood is hard to foam. That is, the vacuum blood collection tube 10 includes a tubular container 11 having an opening at one end with a bottom, and a plug body 12 made of a plug body that closes the opening 11 a of the tubular container 11. The inside of the vacuum blood collection tube 10 is depressurized in advance. The plug body 12 has a thin wall portion 12a at the center where the wall pressure is thin and piercing with a hollow needle is easy.

  In vacuum blood collection, the vacuum blood collection tube 10 is inserted from the opening 2a of the blood collection holder 1 from the stopper 12 side. As a result, the plug 12 is pierced by the second needle tip 8b. Here, since the plug body 12 is pierced in the thin wall portion 12a, the piercing resistance is low, and the plug body 12 can be pierced quickly and easily from the needle tip b side. As a result, the second hollow needle portion 8 d is guided into the vacuum blood collection tube 10.

  Since the direction in which the opening 5 a extends intersects the central axis direction X of the blood collection holder 1, the direction in which the second hollow needle portion 8 d extends is a direction that intersects the central axis direction of the vacuum blood collection tube 11. Yes. In other words, the second hollow needle portion 8 d extends in an oblique direction with respect to the central axis direction of the vacuum blood collection tube 10 in the vacuum blood collection tube 10. Therefore, blood that has flowed in vigorously at the start of vacuum blood collection does not immediately flow down to the bottom of the tubular container 10 of the vacuum blood collection tube 11 but contacts the inner wall of the tubular container 11 and stores the inner wall in a downward direction. Will be. Therefore, it is possible to reliably suppress blood foaming.

  Therefore, even if a coagulation accelerator is stored in the vacuum blood collection tube 10 in advance, the blood flows down through the tube wall of the tubular container 11, so that it is difficult for the blood to foam. There is no fear. Therefore, in the subsequent process, if the serum is to be sucked with the suction nozzle of the clinical laboratory apparatus after centrifugation, the suction nozzle is not likely to be clogged, and the coagulum of the foamed part in the serum is mixed by mistake. There is no risk of doing so.

  As described above, in order for the blood that has flowed into contact with the inner wall of the tubular container 11 of the vacuum blood collection tube 10 to flow down, the second hollow needle portion 8d and the central axis of the tubular container 11 of the vacuum blood collection tube 10 are used. The direction needs to make a certain angle. That is, when blood falls in the direction indicated by the alternate long and short dash line A in FIG. 4, the blood is directed to the bottom without contacting the inner wall of the tubular container 11, and foaming occurs. That is, if the angle θa formed by the alternate long and short dash line A and the central axis direction Y of the vacuum blood collection tube 10 is too small, bubbling cannot be reliably suppressed. But when the 2nd hollow needle part 8d is extended in the direction shown with the dashed-dotted line B, the needle tip 8b is not reliably exposed from the plug body 12. FIG. Further, the needle tip 8b may collide with the inner wall of the tubular container 11. In some cases, blood collection may not be possible.

  When the maximum outer diameter portion of the vacuum blood collection tube 10 is relatively small compared to the inner diameter of the cylindrical main body 2 of the blood collection holder 1, as shown in FIG. 1 may not be substantially coincident with the central axis direction X, and may cross in an oblique direction. In this case, even if the second hollow needle portion 8d of the vacuum blood collection needle 6 is at an appropriate angle with respect to the central axis direction X of the blood collection holder 1, the center axis direction Y of the inserted vacuum blood collection tube 10 and the figure are shown. There is a possibility that a large angle may be formed as indicated by a four-dot chain line B in FIG. In such a case, as described above, the inner surface of the tubular container 11 is deformed by the needle tip 8b, the needle tip 8b is deformed, or the inner surface of the tubular container 11 is damaged, and foreign matter is mixed into the blood. There is a fear.

  6A to 6D show the relationship between the central axis direction Y of the vacuum blood collection tubes 13 to 16 and the direction Z in which the hollow needle portion 8d extends in the vacuum blood collection tubes 13 to 16 having various dimensions. FIG. As is clear from FIGS. 6A to 6D, when the vacuum blood collection tubes having these dimensions are used, that is, when the vacuum blood collection tubes 13 to 16 having the dimensions normally used are used, the above-mentioned angle is used. θ is preferably in the range of 2 to 25 degrees.

  Within this range, when using a blood collection holder 1 of a normal size and a vacuum blood collection tube 10 corresponding to the blood collection holder 1, blood is surely brought into contact with the inner wall of the tubular container 11 of the vacuum blood collection tube 10 and allowed to flow down. It is possible to reliably prevent blood bubbles.

  However, the angle θ is not particularly limited because it varies depending on the size of the blood collection holder 1 and the size of the vacuum blood collection tube 11. That is, in the present invention, in a state where the vacuum blood collection needle 6 is mounted on the blood collection holder 1, the extending direction of the second hollow needle portion 8d crosses the central axis direction of the blood collection holder in an oblique direction, and is thus inserted. It suffices to cross the central axis direction of the vacuum blood collection tube in an oblique direction so that blood can flow in contact with the inner wall of the vacuum blood collection tube, and the angle θ may be less than 2 degrees in some cases. It may be greater than 25 degrees.

  Further, when the blood collection holder 1 is used, the direction in which the first hollow needle portion 8c extends forms an angle θ with the central axis direction X of the blood collection holder 1, and therefore the direction of the first hollow needle portion 8c. , The blood vessel can be reliably prevented from penetrating through the first needle tip 8a. That is, since the first needle tip 8a can be inserted into the blood vessel so that the angle formed by the first hollow needle portion 8c and the blood vessel is reduced, the blood vessel penetrates through the first needle tip 8a. hard.

  That is, without using a special vacuum blood collection needle, it is possible to reliably prevent the blood vessel from penetrating through the first needle tip.

  The vacuum blood collection needle 6 is fixed by the mounting portion 4 as follows.

  The second hollow needle portion 8d of the vacuum blood collection needle 6 is inserted into the opening 5a of the mounting portion 4 of the blood collection holder 1 from the second needle tip 8b side of the vacuum blood collection needle 6. The blood collection needle attached portion 7 has a small diameter portion 7a having a relatively small diameter and a large diameter portion 7b having a diameter larger than that of the small diameter portion 7a. The small diameter portion 7a is located on the second needle tip 8b side of the large diameter portion 7b. The large-diameter portion 7b is configured to fit into the opening 5a. A flange portion 7c having a diameter larger than that of the small diameter portion 7a is provided below the small diameter portion 7a. As the vacuum blood collection needle 6 is inserted into the opening 5, the flange portion 7c spreads the tip of the elastic locking piece 5c and passes through the portion where the elastic locking piece 5c is provided. In this state, the large-diameter portion 7b is fitted into the opening 5a, and the small-diameter portion 7a is held by the elastic locking piece 5c and the holding protrusion 5b.

  FIGS. 7A to 7C are a plan view, a front sectional view, and a bottom view showing a blood collection holder according to the second embodiment of the present invention.

  The blood collection holder 21 of the second embodiment is configured in the same manner as the blood collection holder 1 except that the shape of the mounting portion 4 is different. Accordingly, the same parts are denoted by the same reference numerals, and the description thereof is omitted.

  In the blood collection holder 21 of the second embodiment, the protrusion 5 is provided with an opening 5a, and a female screw 5d is formed on the inner peripheral surface of the opening 5a. A male screw portion fixed by the female screw 5d is formed on the outer peripheral surface of the blood sampling needle mounting portion of the vacuum blood sampling needle attached so as to be held by the female screw. Accordingly, the vacuum blood collection needle is inserted into the opening 5a of the blood collection holder 1 from the second needle tip side, and the vacuum blood collection needle mounting portion of the vacuum blood collection needle is screwed into the opening 5a in which the female screw is formed, whereby a vacuum is obtained. A blood collection needle can be attached to the blood collection holder 21 and fixed.

  Also in this embodiment, the direction in which the opening 5a extends is formed so as to form an angle θ with the central axis direction X of the blood collection holder 1. Therefore, in the present embodiment, as in the case of the first embodiment, it is possible to surely prevent the bubbling of blood during vacuum blood collection, and also reliably prevent the penetration of defects on the first needle tip side. can do. Further, since blood can be collected using a general-purpose vacuum blood collection needle in which the first hollow needle portion and the second hollow needle portion are in a straight line, it is difficult to increase the cost.

  As is clear from the first and second embodiments, in the present invention, in the state where the vacuum blood collection needle is mounted on the blood collection holder, the direction in which the second hollow needle portion extends is the central axis direction X of the blood collection holder. As long as crossing is performed to form an angle, the structure of the blood collection needle mounting portion is not particularly limited.

  As for the vacuum blood collection needle, a general-purpose vacuum blood collection needle in which the first hollow needle portion 8c and the second hollow needle portion 8d are aligned in a straight line can be used as appropriate.

  In addition, since it has the characteristic in the structure of the blood collection needle mounting part of the said blood collection holder, in this invention, it does not specifically limit about the material which comprises a blood collection holder. That is, the blood collection holder 1 can be formed using an appropriate synthetic resin such as polypropylene or polyethylene terephthalate. In some cases, the blood collection holder 1 may be formed of a material other than a synthetic resin such as metal.

  Also, the vacuum blood collection needle combined with the blood collection holder can be any commercially available appropriate vacuum blood collection needle, and is not particularly limited.

  The vacuum blood collection tube inserted into the blood collection holder 1 is not particularly limited, and an appropriate vacuum blood collection tube including a tubular container 11 made of an appropriate synthetic resin or glass and a plug body 12 made of a plug body is used. Can do. A cover 12b is attached so as to cover the stopper 12.

  In the first embodiment, the double-headed vacuum blood collection needle 6 is attached to the blood collection holder 1, but a lure adapter may be attached to the blood collection holder 1 of the above embodiment. Such a method of use is shown in schematic front views in FIGS. 8 (a) and 8 (b).

  The blood collection holder 1 is configured similarly to the blood collection holder 1 of the first embodiment. Therefore, the details of the structure of the blood collection holder 1 are omitted by using the description of the first embodiment.

  Here, the luer adapter 22 is inserted into the mounting portion 4 of the blood collection holder 1 and mounted. The lure adapter 22 is shown in an enlarged front view in FIG. 9A and in an enlarged front sectional view in FIG.

As shown in FIGS. 9 (a) and 9 (b), the luer adapter 22 includes the vacuum blood collection needle 6 described above.
It has the to-be-attached part 23 which has the same shape. A through hole is formed in the mounted portion 23, and the hollow needle 24 is inserted and fixed in the through hole. The hollow needle 24 has a needle tip 24a at the tip. The hollow needle portion 24 b having the needle tip 24 a at the tip is a portion inserted into the cylindrical blood collection holder 1. Here, a rubber sheath 25 is attached to cover the hollow needle 24 in the same manner as the vacuum blood collection needle 6.

  Therefore, the portion where the attached portion 23, the hollow needle 24, and the rubber sheath 25 are provided is configured similarly to the portion from the attached portion 4 of the vacuum blood collection needle 6 toward the second needle tip 8b. The difference is that the cylindrical portion 23a is extended integrally with the attached portion 23 on the opposite side of the attached portion 23 from the side where the hollow needle 24 is extended. The inner diameter of the cylindrical portion 23a is inclined so as to increase toward the tip. A connector 28 connected to the winged blood collection needle 26 by a tube 27 is inserted into the tubular portion 23a and fixed.

  In addition to the winged blood collection needle 27, an injection needle may be connected to the tubular portion 23a of the luer adapter 22 to collect blood.

  Since the luer adapter 22 includes a mounted portion 23 having a structure similar to that of the vacuum blood collection needle 6 used in the first embodiment and a hollow needle portion 24b, the blood collection holder 1 includes the vacuum blood collection needle 6 and It can be installed in the same way. Therefore, as in the case of vacuum blood collection using the vacuum blood collection needle 6, a vacuum blood collection tube is inserted into the blood collection holder 1, and the plug of the vacuum blood collection tube is inserted through the hollow needle 24 of the luer adapter 22, and vacuum blood collection is performed. When started, the direction in which the hollow needle portion 24b extends is a direction that intersects the hollow needle axial direction of the blood collection holder, so that the hollow needle portion 24b intersects the axial direction of the vacuum blood collection tube and blood However, it does not fall to the bottom of the vacuum blood collection tube but flows down along the inner wall. Therefore, similarly, the bubbling of blood at the time of vacuum blood collection can be reliably suppressed.

It is typical front sectional drawing which shows the state by which the vacuum blood collection needle and the vacuum blood collection tube were attached to the blood collection holder of one Embodiment of this invention. (A) is a top view of the blood collection holder of the 1st Embodiment of this invention, (b) is the front sectional drawing, (c) is the bottom view. It is front sectional drawing which shows the state which mounted | wore the blood collection holder of 1st Embodiment with the vacuum blood collection needle | hook. In this invention, it is typical front sectional drawing for demonstrating a problem when the angle which a vacuum blood collection tube and the 2nd hollow needle part inserted insert is too small and too large. It is a typical front sectional view for explaining a problem when a vacuum blood collection tube is inserted into a blood collection holder in a crossing direction. (A)-(d) each shows the relationship between the direction which the 2nd hollow needle part of the vacuum blood collection needle in the vacuum blood collection tube of various dimensions is inserted, and the angle which the center axis | shaft of a vacuum blood collection tube makes. It is typical front sectional drawing. (A) is a top view of the blood collection holder of the 2nd Embodiment of this invention, (b) is front sectional drawing, (c) is a bottom view. (A), (b) is each typical front view for demonstrating the modification of the usage method of the blood collection holder of 1st Embodiment. (A), (b) is the enlarged front view and enlarged front sectional view which show the detail of the lure adapter shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Blood collection holder 2 ... Holder main-body part 3 ... End surface part 4 ... Blood collection needle mounting part 5 ... Projection part 5a ... Opening 5b ... Holding protrusion 5c ... Elastic locking piece 5d ... Female thread part 6 ... Vacuum blood collection needle 7 ... Blood collection needle cover Mounting portion 8 ... Hollow needle 8a ... First needle tip 8b ... Second needle tip 8c ... First hollow needle portion 8d ... Second hollow needle portion 10 ... Vacuum blood collection tube 11 ... Tubular container 12 ... Plug body 12a ... Thin part 12c ... Cover 13-16 ... Vacuum blood collection tube 21 ... Blood collection holder 22 ... Luer adapter 23 ... Mounted part 23a ... Tubular part 24 ... Hollow needle 24a ... Needle tip 24b ... Hollow needle part 25 ... Rubber sheath 26 ... Blood collection needle with wings 27 ... Connecting tube 28 ... Connector

Claims (6)

A first needle tip for collecting blood is provided at one end of the hollow needle, and a second needle tip for guiding blood to the blood collection tube is provided at the other end side, and the space between the first and second needle tips is provided. And a blood collection needle having a mounting portion to be mounted on the blood sampling holder, the tip of which is the second needle tip extending from the mounting portion, or a blood sampling holder. A blood collection holder to which a lure adapter having a mounted portion and a hollow needle portion extended from one end of the mounted portion is mounted,
A mounting portion to which the mounted portion is fixed is provided on one end side so that the hollow needle portion extends from the mounted portion of the blood collection needle or luer adapter into the blood collection holder, and a blood collection tube is provided on the other end side. In the state where the blood collection needle is mounted, the direction in which the hollow needle portion extends from the mounted portion crosses the central axis of the cylindrical blood collection holder. The blood collection holder is characterized in that the mounting portion is configured to fix the blood collection needle or the luer adapter.   The blood collection holder according to claim 1, wherein an angle formed by the hollow needle portion of the blood collection needle or luer adapter and a central axis of the blood collection holder is in a range of 2 degrees to 25 degrees.   The cylindrical blood collection holder has a cylindrical side surface portion and an end surface portion connected to one end side of the cylindrical side surface portion, and the mounting portion is shifted from a substantially center of the end surface portion. The blood collection holder according to claim 1, wherein the blood collection holder has an opening that is provided in the mounting portion and into which the attached portion is inserted and held.   The blood collection holder according to any one of claims 1 to 3, wherein a holding mechanism for holding the mounted portion of the blood collection needle or luer adapter is provided in the opening of the mounting portion.   The said holding mechanism has the elastic locking piece which protrudes inward from the inner surface of the said opening of the said to-be-mounted part, and the level | step-difference part by which the said elastic locking piece is merged in the said to-be-mounted part. The blood collection holder as described.   The said holding | maintenance mechanism has an internal thread part formed in the inner surface of the said opening of the said mounting part, and an external thread part formed in the outer surface of the to-be-attached part of the said blood collection needle or a lure adapter. Blood collection holder.

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