JP2006081844A - Needle-united blood collection tube holder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a needle-united blood collection tube holder which can be used once to scrap, can prevent collected blood from flowing backward, can also be connected easily to a connector for other collection than blood collection, allows needling with a small angle between the needle and a skin surface, and can be gripped to confirm that the needle is punctured into a blood vessel with the edge surface directed upward. <P>SOLUTION: This needle-united blood collection tube holder has one end which is mounted with a hollow needle 2 comprising a blood vessel puncturing needle 21 and a blood collection tube needle 22 in such a manner that the latter is positioned inside and the former is positioned outside the holder, another end of an opening 10, and further may have a blood collection tube guide member 7, wherein the hollow needle 2 is mounted to the blood collection holder body 1 by integral moulding and the blood collection tube needle is wrapped with a rubbery elastic body 3. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a blood collection needle integrated blood collection tube holder, and more specifically, the present invention can easily form the structure of a blood collection needle integrated blood collection tube holder, and can easily check the blade surface and grip when puncturing. In addition, the present invention relates to a needle-integrated blood collection holder that is provided with a backflow prevention valve to prevent backflow of collected blood and to help prevent infections and the like.

Conventionally, in clinical examinations such as blood tests, a hollow blood collection needle consisting of a blood vessel puncture needle and a blood collection needle wrapped with a rubber elastic body is mounted in the blood collection tube holder, and is opened from the opening of the blood collection tube holder. When the blood collection tube is inserted and the needle penetrates the rubber lid of the blood collection tube, blood is collected by flowing into the blood collection tube. Subsequently, blood is collected in a similar manner to another blood collection tube, and the number of blood collections according to the type of examination is performed. Thus, in recent years, blood is collected into a required number of blood collection tubes using a blood collection tube holder, but after use, only the blood collection tube holder is cleaned and disinfected by removing the needle and reused. Yes. Several techniques related to the needle attachment / detachment mechanism are known. Specifically, the needle mounting portion of the blood collection tube holder has a pressing portion, and the needle mounting hole is expanded by the pressing of the pressing portion to insert the hub. When the pressing portion is released, the needle mounting hole contracts and the hub is fixed. When the pressing portion is pressed, the needle mounting hole is expanded as described above, and the fixed hub is released, so that the needle can be attached and detached (see, for example, Patent Document 1). In addition, in the needle attachment / detachment mechanism, a lever is provided at one portion of the needle attachment portion of the blood collection tube holder facing the notch of the elastic holding member, and the needle attachment hole is formed by pushing the lever in the direction of increasing the diameter. The hub can be easily opened and the hub can be easily inserted, and the diameter can be reduced by releasing the hand from the lever so that the hub can be fixed (see, for example, Patent Document 2). Further, conventionally, a hollow needle composed of a blood vessel puncture needle portion and a blood collection needle is usually formed of a so-called straight tube on the same axis. Also, when using such a hollow needle, the angle with the skin surface becomes large at the time of puncture, so it may be difficult to collect blood, and in thin blood vessels etc., the blade tip may accidentally pierce the blood vessel and improve this point. And the hollow needle arrange | positioned in the position where the front-end | tip part of the needle tube was eccentric is disclosed (for example, refer patent document 3).
JP-A-8-126630 (Claim 3, FIG. 2) JP-A-11-169360 (Claim 2, FIG. 11) JP 2003-153883 A (Claim 2, paragraph 0002, FIG. 2, FIG. 6)

  However, the needle attaching / detaching mechanism described in Patent Documents 1 and 2 as described above is preferable in that the needle after blood collection can be easily removed from the blood collection tube holder without touching the hand. However, there is a problem in that the production is complicated and complicated, and the cost of producing the disposable blood collection holder after disposal is increased. In addition, the blood collection device described in Patent Document 3 still has a problem that blood that has been collected and introduced into the blood collection tube flows back from the blood vessel puncture needle into the blood vessel. Furthermore, as shown in Patent Document 3, it is extremely difficult to form the needle tube so as to have two curved bent portions.

  Therefore, the present inventors have made various studies on the above-mentioned problems and obtained the following knowledge. That is, (a) the disposable method was adopted in consideration of the problem of disposal after blood collection. (B) When collecting blood, a check valve was employed to prevent backflow of the collected blood. (C) When collecting blood, it can be operated at a small angle with the skin surface. (D) It is easy to grip at the time of blood vessel puncture so that it can be easily confirmed whether or not the blade surface is facing upward. Therefore, the problem to be solved by the present invention is that it is discarded after a single use, the backflow of collected blood is prevented, and it can be operated at a small angle with the skin surface. Is to provide. Another problem to be solved by the present invention is to provide a needle-integrated blood collecting holder that can be easily grasped and gripped easily by gripping that the blade surface is the upper surface during blood vessel puncture.

The above-described problems of the present invention are achieved by the following inventions.
(1) One end of the hollow needle composed of a blood vessel puncture needle portion and a blood collection needle portion is mounted so that the blood collection needle portion is inside and the blood vessel puncture needle portion is outside, and the other end is open. Further, in the needle-integrated blood collection holder that may further include a blood collection tube guide member, the hollow needle is attached to the blood collection tube holder body by integral molding, and the needle portion for blood collection has a rubber-like elasticity. Disposable needle integrated blood collection tube holder, characterized in that the body is encapsulated.
(2) The disposable needle-integrated blood collection tube holder according to the above item 1, wherein at least a part of the blood collection tube holder has a mesh or a plurality of slits.
(3) A needle-integrated blood collection holder that has a blood collection needle inside one end, a blood vessel puncture needle outside, an opening at the other end, and a blood collection guide member inside The blood collection needle is attached to one end of the blood collection tube holder body by integral molding, and the blood vessel puncture side has a blood vessel puncture needle through a check valve built-in portion, and these needles. Is connected through a check valve, and the needle for blood collection is wrapped with a rubber-like elastic body.
(4) The needle according to the third aspect, wherein the blood vessel puncture side has a check valve built-in portion, and a blood vessel puncture needle is connected to the check valve built-in portion via a tube. Integrated blood collection holder.
(5) A needle-integrated blood collection holder that has a blood collection needle inside one end, a blood vessel puncture needle outside, an opening at the other end, and a blood collection guide member inside The blood collection needle and the blood vessel puncture needle are provided on the hub so as to face each other, and the blood vessel puncture needle is integrally mounted at a position displaced in the outer peripheral direction from a position having the blood collection needle as an axis. A needle-integrated blood collection holder, wherein the needles communicate with each other, and a rubber elastic body is encapsulated in the blood collection needle.
(6) A needle-integrated blood collection holder that has a blood collection needle inside one end, a blood vessel puncture needle outside, an opening at the other end, and a blood collection guide member inside The blood collection tube holder body has a check valve built-in portion at one end thereof, and the check valve built-in needle is attached to the check valve built-in portion by integral molding, and on the opposite side of the check valve built-in portion. The blood vessel puncture needle is mounted by integral molding at a position displaced from the center of the blood collection tube holder to the outer periphery, these needles communicate with each other via a check valve, and the blood collection needle has a rubber-like shape. A needle-integrated blood collection holder characterized in that an elastic body is encapsulated.
(7) The needle according to any one of the first to sixth aspects, wherein the upper surface portion of the blood collection tube holder is formed flat at a position where the blade surface of the blood vessel puncture needle is the upper surface. Body shape blood collection tube holder.
(8) The upper surface portion and the lower surface portion of the blood collection tube holder are formed in a plane at a position where the blade surface of the blood vessel puncture needle is the upper surface. Needle collecting tube holder.
(9) The needle-integrated blood collection tube holder according to item 7 or 8, wherein the upper surface portion has a marker.
(10) The needle-integrated blood collection holder according to item 9 above, wherein the marker is colored.
(11) The needle-integrated blood collection tube holder according to item 7 or 8, wherein the marker is a concave portion or a convex portion.
(12) The check valve has annular airtight projections on the upstream side and downstream side of the main body made of an elastic member, and has a through hole in the center, and the through hole has a rectangular slit on the downstream side. Wherein the upstream side surface has a square shape and is inclined from the longitudinal end of the rectangular slit toward the upstream side surface. The needle-integrated blood collection tube holder according to any one of the above.
(13) The check valve includes a housing having an upstream liquid passage portion and a valve body storage portion, and the rubber elastic valve body is pressure-bonded and stored in the valve body storage portion at a position in close contact with the liquid passage portion. The upstream liquid passage is closed, and there is a through hole around the valve body. The valve body is easily deformed and opened by the pressure of the liquid flowing from the upstream liquid passage portion to the downstream side. In addition, the needle-integrated blood collection tube holder according to any one of the third, fourth, and sixth aspects, wherein the needle-integrated blood collection tube holder is closed against a reverse flow from the downstream side to the upstream side.

According to the first aspect of the present invention, the disposable needle-integrated blood collection tube holder is easy to manufacture, low-cost and mass-produced because the hollow needle is attached to the blood collection tube holder body by integral molding. Therefore, it is possible to adopt a disposable method, which has an excellent effect that it can be discarded immediately after use. The invention described in Item 2 of the present application can be further reduced in cost according to the invention described in Item 1 because at least a part of the blood collection tube holder has a mesh or a plurality of slits.
In the invention according to the third aspect of the present application, since a blood collection needle is attached to one end of the blood collection holder main body by integral molding, manufacturing is easy, low cost and mass production is possible. The disposable method can be adopted, and it has an excellent effect that it can be discarded immediately after use. On the blood vessel puncture side, a blood vessel puncture needle has a check valve built-in portion and these needles communicate with each other through the check valve, so that blood flows in the blood collection direction during blood collection. Since the collected blood does not flow backward, there is an excellent effect that it is possible to prevent the onset of infection such as infection caused by the blood backward flow.
The invention described in item 4 of the present application is as described in item 3, wherein the blood vessel puncture side has a check valve built-in portion, and a blood vessel puncture needle is connected to the check valve built-in portion via a tube. Therefore, it is suitable for use in a patient who has a thin blood vessel and is difficult to puncture when blood is collected in a blood test.

In the invention according to the fifth aspect of the present application, a blood collection needle is provided inside one end, a blood vessel puncture needle is provided outside, the other end is opened, and a blood collection guide member is further provided inside. In the needle-integrated blood collection tube holder, the blood collection needle and the blood vessel puncture needle are provided on the hub so as to face each other, and the position where the blood collection needle is displaced in the outer peripheral direction from the position centered on the blood collection needle is described above. Since the vascular puncture needles are mounted by integral molding, and these needles are in communication with each other, they are easy to manufacture, can be manufactured at low cost, and can be mass-produced. It has an excellent effect that it can be discarded. In addition, since the blood collection needle and the blood vessel puncture needle are present at positions displaced from the center of the blood collection tube holder to the outer periphery, the blood collection tube holder comes into contact with the skin surface when the blood vessel puncture needle punctures the blood vessel. There is no hassle and there is an excellent effect that the blood vessel can be punctured easily.
In the invention according to claim 6 of the present application, the blood collection tube holder main body has a check valve built-in portion at one end, and the check tube built-in needle is attached to the check valve built-in portion by integral molding. On the other side of the check valve built-in part, the blood vessel puncture needle is mounted by integral molding at a position displaced from the center of the blood collection tube holder to the outer periphery, making it easy to manufacture, low cost and mass production possible Therefore, the disposable method can be adopted, and an excellent effect is obtained that it can be discarded immediately after use. In addition, the blood collection needle and the blood vessel puncture needle are present at positions displaced from the center of the blood collection tube holder to the outer periphery, and these needles communicate with each other via a check valve, so that the blood vessel puncture needle punctures the blood vessel. At this time, there is no trouble that the blood collection tube holder is brought into contact with the skin surface, and the blood vessel can be easily punctured.

In the invention described in item 7 of the present application, in any one of items 1 to 6, the upper surface portion of the blood collection tube holder is formed in a plane at a position where the blade surface of the blood vessel puncture needle is the upper surface. As a result, it is easy to confirm that the blade surface is facing the upper surface at the time of blood vessel puncture, and there is an excellent effect that it is easy to grip at the time of puncture.
In the invention described in Item 8 of the present application, in any one of Items 1 to 6, the upper surface portion and the lower surface portion of the blood collection tube holder are flat at a position where the blade surface of the blood vessel puncture needle is the upper surface. By being formed, it can be placed stably without rolling when placed, and it is easy to confirm that the blade surface is facing the upper surface at the time of blood vessel puncture, and it is easy to grip at the time of puncture There is an effect.
In the invention according to the ninth item of the present application, in the seventh or eighth item, by having a marker on the upper surface part, it is possible to easily confirm that the blade surface is facing up visually or by touch. There is an excellent effect of being able to. In the invention according to item 10 of the present application, since the marker is colored in item 9, there is an excellent effect that it can be easily confirmed visually that the blade surface is facing upward. . In the invention according to the eleventh item of the present application, in the ninth item, when the marker is formed of a concave portion or a convex portion, it can be easily confirmed that the blade surface is facing upward by the touch of a finger. It has a particularly remarkable effect.
The invention according to the twelfth aspect of the present invention is the invention according to any one of the third, fourth and sixth aspects, wherein the check valve is provided on the upstream side surface and the downstream side surface of the main body made of an elastic member. It has an annular hermetic protrusion and a through hole in the center. The through hole has a rectangular slit on the downstream side, a square on the upstream side, and the longitudinal direction of the rectangular slit. By tilting toward the upstream side surface from the end, there is no risk that the collected blood will flow backward during blood collection, and therefore, it is possible to prevent the risk of infection such as infection caused by bacterial infection. It plays.

The invention according to the thirteenth aspect of the present application is the invention according to any one of the third, fourth, or sixth aspects, wherein the check valve includes an upstream liquid passage portion and a valve body storage portion. A rubber elastic valve body is press-fitted and stored in a position where the rubber elastic valve body is in close contact with the liquid passage portion, the upstream liquid passage is closed, and a through hole is formed around the valve body. And the valve body is easily deformed and opened by the pressure of the liquid flowing from the upstream liquid passage portion to the downstream side, and is closed against the reverse flow from the downstream side to the upstream side, thereby collecting blood. At this time, not only is the collected blood not likely to flow backward, but there is no need to adjust the pressure. Therefore, there is no need to perform an extremely troublesome operation of pressure adjustment, and an excellent effect is obtained that the risk of infection such as infection caused by bacterial infection can be prevented very well.

Hereinafter, the present invention will be specifically described with reference to the drawings. However, the present invention is not limited to the specific examples described below. FIG. 1 is a cross-sectional view showing a needle-integrated blood collection tube holder of the present invention. In FIG. 1, a needle-integrated blood collection tube holder I has a hollow needle 2 composed of a blood vessel puncture needle portion 21 and a blood collection tube needle portion 22 at one end of the holder body 1, and a blood collection tube needle portion 22 is connected to a blood collection tube holder body. 1 is integrally formed. A hub (or a needle fixing portion) 4 for fixing and supporting the hollow needle 2 is also formed at the same time by this integral molding. The hollow needle 2 is preferably provided at the central shaft portion of the blood collection tube holder main body 1. The other end of the blood collection tube holder main body 1 is opened. Furthermore, a rubber-like elastic body (or also called an elastic sheath body) 3 is encapsulated in the blood collection tube needle 22 in the blood collection tube holder main body 1. It is preferable to cover the rubber-like elastic body 3 from the opening side after the hollow needle 2 is integrally formed. As a molding method, an appropriate one can be selected from well-known molding means such as compression molding, transfer molding, injection molding and the like. A cap (or also referred to as a protector) 5 is fitted to the blood vessel puncture needle 21. The cap 5 may be fitted or may not be fitted, but is preferably fitted. Furthermore, the blood collection tube holder main body 1 may or may not have a blood collection tube guiding member inside, but preferably has a blood collection tube guiding member. The blood collection tube guiding member 7 is well known and some are known, and any of them can be used in the present invention. For example, a blood collection tube guide member in which four flexible parts equally distributed in the circumferential direction are integrally formed on the front end portion of a cylindrical body having a constant diameter disclosed in Japanese Patent Laid-Open No. 7-204180, A blood collection tube guide member provided with four slits corresponding to the peripheral wall of the blood collection tube holder disclosed in JP-A-19527, and a plurality of flexible fins disclosed in JP-A-8-19528 A blood collection tube guide member provided so as to project from the inside of the main body toward the opening can be used. In the blood collection tube holder main body 1 of the present invention shown in FIG. 1, the blood collection tube guide member 7 is configured by providing fins that are tapered (cross section) thick at equal intervals in the distal direction on the inner peripheral wall. . Since the integrated blood collection tube holder of the present invention formed in this way is integrally molded, it is easy to manufacture, can be manufactured at low cost and can be mass-produced, and a disposable method can be adopted, which is immediately discarded after use. It has an excellent effect of being able to. FIG. 2 is a side view showing the blood collection tube holder of the present invention having a slit in the peripheral wall. In FIG. 2, at least a part of the blood collection tube holder has a plurality of slits 11. Thereby, the amount of material can be reduced, and the cost can be further reduced.

FIG. 3 is a cross-sectional view showing a needle-integrated blood collection holder having a check valve according to the present invention. The needle-integrated blood collection tube holder II of the present invention has a central tube portion of the blood collection tube holder main body 1 at one end of the holder main body 1 and a blood collection needle 27 with the tip 27a of the needle in the direction of the opening 10. It is arranged and is formed integrally. The other end of the blood collection tube holder main body 1 is opened (10). Further, a rubber-like elastic body 3 is encapsulated in a blood collection tube needle 27 in the blood collection tube holder main body 1. It is preferable to cover the rubber-like elastic body 3 from the opening side after the hollow needle 2 is integrally formed. On the other hand, a check valve built-in portion 6 is provided on the blood vessel puncture side of one end of the blood collection tube holder main body 1. The check valve built-in portion 6 is composed of a chamber, in which the check valve 9 is disposed, and a hub 62 to which the blood vessel puncture needle 26 is fixed is coupled. This connection is fixed by adhesion, fusion, screwing or the like. The blood collection needle 27 and the blood vessel puncture needle 26 communicate with each other through the check valve 9, and the collected blood passes through the blood vessel puncture needle 26 and passes through the check valve 9 to collect the blood collection needle. 27 flows into a blood collection tube (not shown). A cap (or a protector) 5 is fitted to the blood vessel puncture needle 21. The cap 5 may be fitted or may not be fitted, but is preferably fitted. Furthermore, the blood collection tube holder main body 1 may or may not have a blood collection tube guiding member inside as described in the first aspect of the invention, so-called FIG. It is good to have a member. As described above, the blood vessel puncture side has the blood vessel puncture needles through the check valve built-in portion, and these needles communicate with each other through the check valve, so that blood is collected in the blood collection direction during blood collection. Although it flows, since the collected blood does not flow backward, there is an excellent effect that it is possible to prevent the onset of infection such as infection due to the backflow of blood.

FIG. 4 is a cross-sectional view showing another embodiment of the needle-integrated blood collection tube holder of the present invention. 4, the needle-integrated blood collection tube holder III of the present invention is obtained by connecting the connection end 63 of the hub 62 of the blood collection tube holder and the blood vessel puncture needle 24 shown in FIG. The blood collection tube holder portion 1 including the check valve 9 and the blood collection tube needle portion 27 including the rubber elastic body 3 are the same as the blood collection tube holder portion shown in FIG. The lid 62 engaged with the check valve mounting chamber 61 at the end of the blood collection tube holder main body 1 has a connection portion 63 into which the tube 31 is fitted, and one end of the tube 31 is connected to the connection portion 63. It is inserted. The other end 43 of the tube 31 is provided with a blood vessel puncture needle 24, and the needle 24 has a protector 5. In addition, there are vanes 32 at the end of the tube. In this way, the blood vessel puncture side has a check valve built-in portion, and the check valve built-in portion is connected to the blood vessel puncture needle and the tube, so that the blood vessel is thinly punctured during blood collection in blood tests. Suitable for use in difficult patients.
FIG. 5A is a cross-sectional front view of the hub as seen from the front (left side of the drawing) of the cut portion taken along line AB. FIG. 5b is a cross-sectional view showing a blood collection needle according to the present invention. In FIG. 5, the blood collection needle IV has a blood vessel puncture needle 26 below the hub 4, and a blood collection needle 27 above the opposite side of the hub 4. In addition, a blood vessel puncture needle 26 and a blood collection needle 27 communicate with each other in the hub 4, and the collected blood passes through the communication portion 46 and passes through the blood collection tube 27, and further, a blood collection tube (not shown). No). Further, the surface of the needle fixing portion 41 of the hub 4 has a screw thread, and is fixed by screwing with a female screw thread provided on the inner wall of the fitting hole at the tip of the blood collection tube holder. This fixing may be performed by screwing, bonding, fusion, integral molding, or the like. In this way, the blood collection needle and the blood vessel puncture needle are arranged to face each other, and by being integrally formed from both sides at a position displaced in the outer peripheral direction from the position where the blood collection needle is an axis, it is easy to process and manufacture. Thus, since it can be mass-produced at a low cost, the disposable method can be adopted, and an excellent effect is obtained that it can be discarded immediately after use. In addition, since the position of the blood collection needle is displaced in the outer peripheral direction from the position where the blood collection needle is the axis, there is no troublesomeness caused by contact of the blood collection holder with the skin surface when the blood vessel puncture needle is punctured to the blood vessel. This provides an excellent effect that can be easily punctured. Furthermore, as shown in FIG. 5c, in the present invention, it is preferable that the blood vessel puncture needle 26 has an angle θ with respect to the axis of the blood collection needle 27, which is the blood collection needle. When the angle is -10 ° to 10 ° with respect to the axis of 27 and has an angle with respect to the lower or upper direction, the angle θ is preferably 2 ° with respect to the axis of the blood collection needle 27. ~ 5 °, upward 2 ° -5 °. If the angle θ is smaller than 1 ° above or below the axis of the blood collection needle 27, there is no point in providing the angle, and if the angle θ exceeds 10 °, it becomes difficult to use.

FIG. 6 is a sectional view showing still another embodiment of the present invention. In FIG. 6, the blood collection tube holder main body 1 side of the needle-integrated blood collection tube holder V has the same configuration as that of the blood collection tube holder main body 1 shown in FIG. That is, a blood collection needle 27 is provided inside one end of the blood collection holder main body 1, a blood vessel puncture needle 26 is provided outside, and the opening 10 is provided at the other end. Furthermore, the inside of the blood collection tube holder main body 1 may have a blood collection tube guide member as shown in FIG. A check valve built-in portion 6 is provided on the blood vessel puncture needle side of the blood collection tube holder. The check valve built-in portion 6 includes a chamber 65 in which the check valve 9 can be accommodated. A valve 9 is arranged and sealed by a lid 64. The chamber 65 and the lid 64 constituting the check valve built-in portion 6 may be bonded, fused, or integrally formed, but preferably integrally formed. Further, the blood vessel puncture needle 26 is attached to the needle fixing portion 42 of the lid body 64 of the check valve built-in portion 6 by integral molding. The blood vessel puncture needle 26 is mounted by integrally molding the blood vessel puncture needle 26 at a position displaced to the outer periphery with respect to the axis of the blood collection needle 27, and these needles 26, 27 are connected via the check valve 9. The blood that has been communicated and collected by the blood vessel puncture needle 26 passes through the communication portion 46, passes through the blood collection needle 27, and further flows into a blood collection tube (not shown). Further, a rubber elastic body 3 is encapsulated in the blood collection needle. Furthermore, the blood vessel puncture needle 26 may have the protector 5. Needless to say, the needle-integrated blood collection holder of the present invention may have the blood vessel puncture needle 26 at an angle θ as shown in FIG. Further, as shown in FIG. 2, at least a part of the blood collection tube holder may have a plurality of slits 11 in the blood collection tube holder. Thereby, the amount of material can be reduced, and the cost can be further reduced.

FIG. 7 is a cross-sectional view showing a marker attached to the needle-integrated blood collection tube holder of the present invention. FIG. 8 is a cross-sectional view of a needle-integrated blood collection tube holder. 8a is a cross-sectional view taken along the line CD, FIG. 8b is a cross-sectional view taken along the line EF, and FIG. 8c is a cross-sectional view taken along the line GH. 7, the needle-integrated blood collection tube holder shown in FIG. 7a has the blade surface 26a of the blood vessel puncture needle 26 as an upper surface, and the upper surface portion and the lower surface portion of the blood collection tube holder are both flat surfaces 12a and 12b. (Refer to a in FIG. 8 for a sectional view). This is because it is preferable that the flat surface 12b is also formed on the lower surface portion in consideration of the stability when the blood collection tube holder is placed. However, in the present invention, only the upper surface portion of the blood collection tube holder may be formed on the flat surface 12. FIG. 7B shows a case where the marker 13 is provided on the flat portion of the upper surface of the needle-integrated blood collection tube holder. The marker 13 is formed by coloring (for example, yellow, red, green, etc.), a concave portion or a convex portion, and these shapes include a circle, an ellipse, a triangle, a rectangle, a polygon, a pattern (for example, a mesh, a line) , Lattices, wells, stars, etc.), but is not particularly limited in the present invention. In FIG. 7b, a plurality of circular recesses 13 are provided as markers (see FIG. 8b). Usually, one or more such markers 13 are provided, but 5-6 are preferable. Further, as shown in the partial plan view of FIG. 7c, such a marker is provided with a plurality of circular recesses on the plane 12, and a finger is applied to a place where the holder is most frequently supported. The portion can be made into a mark or a shape having discriminating power so that it can be. The distinguishing mark 13a is preferably colored. In addition, the shape having the discriminating power may be another shape that can be distinguished from other marks, such as a triangular system or a square for a plurality of circles. FIG. 7d shows a blood collection holder having a line 14 made of three concave portions along the length direction as a marker on the flat surface portion 12 of the blood collection holder main body 1 (c in FIG. 8). reference). Instead of the line made of these concave portions, a line made of a convex portion may be used, and such a line may be provided in the circumferential direction of the blood collection tube holder in the plane portion 12.

In the present invention, a check valve 9 is provided between the blood vessel puncture needle of the needle-integrated blood collection tube holder and the blood collection tube needle to prevent backflow. Here are a few. One of them is that the check valve has an annular airtight projection on the upstream side and the downstream side of the main body made of an elastic member, and has a through hole in the central part. A rectangular slit is formed, a square is formed on the upstream side surface, and is inclined from the longitudinal end of the rectangular slit toward the upstream side surface, as shown in FIG. Since the valve is housed in an annular housing, the airtight annular projections concentrically with respect to the center are formed on the respective surfaces of the check valve body 9 made of a circular elastic body on the opening 923 side and the slit 93 side. 941 and 942 are formed. In addition, a through hole 93 is formed at the center of the surface 1b on the slit 93 side, and this through hole 93 is formed with a rectangular slit on the downstream (or slit side) surface. There may be. Further, the upstream surface (opening side) surface 1 a has a square, for example, a square 923, and an inclined portion 92 that is inclined from the surface toward the slit 93. The inclined portions 921 and 922 reach the side in the longitudinal direction of the slit. Accordingly, when viewed from the A′-B ′ cross-sectional view of FIG. 9B, the inclined portions 921 and 922 are tapered from the upstream side toward the downstream side. The check valve 9 used in the present invention has the function 9 in that when blood flows from the upstream side, if the fluid pressure increases, the slit 93 is distorted downstream to open a hole in the slit 93 and blood flows in. To do. On the other hand, when blood is about to flow in from the downstream side, the slit 93 is distorted on the upstream side. However, since this distortion presses the inclined portion when the check valve 9 is installed, the slit 93 does not open. The elastic body used in the present invention preferably has a rebound resilience in the range of 30 to 80%. The range of the rebound resilience used is individually determined by the rebound resilience and the degree of compression when the compression arrangement is performed. In addition, as the check valve, a duck bill type, a combination type of a ball and a rubber plate, an umbrella type, a foot valve type, and the like can be used. The structure and operation of these check valves are known in the art, and are all well known in the art.

In addition, the check valve preferably used in the present invention includes a housing having an upstream liquid passage portion and a valve body storage portion, and a rubber elastic valve body is connected to the liquid passage portion in the valve body storage portion. The upstream liquid passage is closed at the close contact position, the upstream liquid passage is closed, and there is a through hole around the valve body, and the valve body is a pressure of the liquid flowing downstream from the upstream liquid passage portion. 10 is formed by being easily deformed and opened, and is closed against the reverse flow from the downstream side to the upstream side. Specifically, FIG. 10 shows a check valve 72. 10 a is a bottom view thereof, and b of FIG. 10 is a cross-sectional view taken along line AA thereof. In FIG. 10, the check valve 72 is formed of a thin disk-like member having a fixing portion 723 on the periphery and a closing valve 721 connected to the center by a connection portion 722. Through holes 732 and 732 are formed between the connecting portions 722. When the check valve 72 comes into contact with the protrusion provided at the tip of the fluid passage, the check valve 72 is in close contact and does not flow liquid. Conversely, when the closing valve 721 moves away from the protrusion, the passage is released and the liquid flows through the through holes 732 and 732.

    The needle-integrated blood collection tube holder of the present invention is used for blood tests, for example, clinical tests such as serum tests, blood cell tests, etc., connected to a collection connection portion that is taken out by bypass from a circuit for dialysis or nutrient injection, etc. In addition to being used in the field related to auxiliary medicine, it is widely used as a sampling device in the medical field.

It is sectional drawing which shows the needle | hook integrated blood-collecting holder of this invention. It is a side view showing a needle integrated blood collection tube holder having a slit of the present invention. It is sectional drawing which shows another embodiment of the needle-integrated blood collection tube holder of this invention. It is a fragmentary sectional view which shows the needle integrated blood-collecting tube holder which attached the tube of this invention. It is sectional drawing which shows the hollow needle used for this invention. FIG. 5A is a cross-sectional view taken along the line AB. It is a side view which shows another embodiment of this invention. It is a top view which shows the surface of the blood-collecting-tube holder used for this invention. FIG. 8 is a cross-sectional view of the blood collection tube holder shown in FIG. 7. It is a bottom view thru / or sectional view showing a check valve used for the present invention. FIG. 9b shows a cut surface along the line A'-B '. FIG. 10a is a bottom view of another check valve, and FIG. 10b is a cross-sectional view taken along line AA.

Explanation of symbols

1 Blood collection tube holder 10 Opening (part)
DESCRIPTION OF SYMBOLS 11 Slit 12 Plane | planar part 12a Plane part 12b of upper surface Plane part 13, 13a of lower surface Marker 14 Concave or convex part 2 Hollow needle 21, 24, 26 Puncture needle part or blood vessel puncture needle 22, 27 26a Blood vessel puncture needle distal end portion 27a Blood collection blood vessel needle distal end portion 3 Rubber elastic body or elastic sheath body 31 Tube 32 Blade 4, 41, 42, 43 Needle fixing portion (hub)
44 Screws 46, 66, 67 Communication part 5 Protector 6 Check valve mounting part 61, 65 Check valve mounting chamber 62, 63, 64 Lid 7 Blood collection tube guiding member 72 Closing valve 722 Closing valve connecting part 723 Fixing part 732 Transparent Hole 9 Check valve 92 Inclination of opening 93 Contact type slit I, II, III, IV, V Needle integrated blood collection holder

Claims (13)

At one end, the blood collection tube needle portion of a hollow needle comprising a blood vessel puncture needle portion and a blood collection tube needle portion is mounted inside and the blood vessel puncture needle portion is on the outside, and the other end is open, In the needle-integrated blood collection holder that may have a blood collection tube guide member, the hollow needle is attached to the blood collection tube holder body by integral molding, and a rubber-like elastic body is wrapped around the blood collection needle portion. A needle-integrated blood collection tube holder that is worn. The needle-integrated blood collection holder according to claim 1, wherein at least a part of the blood collection tube holder has a mesh or a plurality of slits. In a needle-integrated blood collection holder that has a blood collection needle inside one end, a blood vessel puncture needle on the outside, an opening at the other end, and a blood collection guide member inside the inside, The blood collection needle is attached to one end of the blood collection tube holder body by integral molding, and the blood vessel puncture side has a blood vessel puncture needle through a check valve built-in portion, and these needles are non-returnable. A needle-integrated blood collection tube holder which is communicated through a valve and further has a rubber-like elastic body wrapped around the blood collection needle. 4. The needle integrated sampling according to claim 3, wherein the blood vessel puncture side has a check valve built-in portion, and a blood vessel puncture needle is connected to the check valve built-in portion via a tube. Blood vessel holder. Blood collection in a needle-integrated blood collection holder that has a blood collection needle inside one end, a blood vessel puncture needle outside, an opening at the other end, and a blood collection guide member inside The vascular puncture needle and the vascular puncture needle are provided on the hub so as to face each other, and the vascular puncture needle is mounted by integral molding at a position displaced in a peripheral direction from a position having the blood collection needle as an axis, A needle-integrated blood collection holder characterized in that these needles communicate with each other, and a rubber-like elastic body is encapsulated in the blood collection needle. In a needle-integrated blood collection holder that has a blood collection needle inside one end, a blood vessel puncture needle on the outside, an opening at the other end, and a blood collection guide member inside the inside, One end of the blood collection tube holder body has a check valve built-in portion, and the check valve built-in portion is mounted by integral molding on the check valve built-in portion, and on the opposite side of the check valve built-in portion, The blood vessel puncture needle is mounted by integral molding at a position displaced in the outer circumferential direction from the center of the blood collection tube holder body, these needles communicate with each other via a check valve, and the blood collection needle has a rubber-like elastic A needle-integrated blood collection holder characterized in that the body is encapsulated. The needle-integrated blood collection holder according to any one of claims 1 to 6, wherein an upper surface portion of the blood collection tube holder is formed flat at a position where the blade surface of the blood vessel puncture needle is an upper surface. . The needle integrated type according to any one of claims 1 to 6, wherein the upper surface portion and the lower surface portion of the blood collection tube holder are formed flat at a position where the blade surface of the blood vessel puncture needle is the upper surface. Blood collection tube holder. The needle-integrated blood collection tube holder according to claim 7 or 8, further comprising a marker on an upper surface portion. The needle-integrated blood collection tube holder according to claim 9, wherein the marker is colored. The needle-integrated blood collection tube holder according to claim 7 or 8, wherein the marker comprises a concave portion or a convex portion. The check valve has annular airtight projections on the upstream side and the downstream side of the main body made of an elastic member, and has a through hole in the center, and the through hole has a rectangular slit formed on the downstream side. The rectangular shape is formed on the upstream side surface, and the rectangular slit is inclined toward the upstream side surface from the longitudinal end of the rectangular slit. Needle collecting tube holder. The check valve includes a housing having an upstream liquid passage portion and a valve body storage portion, and the rubber elastic valve body is pressure-bonded and stored in the valve body storage portion at a position in close contact with the liquid passage portion. The liquid passage is closed, and there is a through hole around the valve body, and the valve body is easily deformed and opened by the pressure of the liquid flowing from the upstream liquid passage portion to the downstream side, and The needle-integrated blood collection tube holder according to claim 3, wherein the needle-integrated blood collection tube holder is closed against a reverse flow from the downstream side to the upstream side.