JP3179889U - Blood collection line structure - Google Patents

Abstract

There is provided a blood collection line structure having a novel structure capable of easily, quickly and safely performing the operation of transferring blood collected in a syringe from a blood line to a blood collection tube.
A blood collection line structure 10 is provided with a holder main body 16 having a bottomed cylindrical shape into which a blood collection tube 14 is inserted and an inward projecting from a bottom 24 of the holder main body 16. A hollow needle 42 inserted into and connected to the blood collection tube 14 and a flexible tube 20 that extends outward from the bottom 24 of the holder body 16 and communicates with the hollow needle 42. And a luer connection portion 18 that is provided at a distal end portion of the flexible tube 20 opposite to the connection end to the holder main body 16 and to which the luer 50 of the syringe 12 is connected.
[Selection] Figure 2

Description

  The present invention relates to a blood collection line structure for medical use, and more particularly to a blood collection line structure suitably used when blood collected by a syringe is transferred to a blood collection tube and stored in a sealed state.

  Conventionally, in blood tests in the medical field, collected blood is stored and handled in a sealed state by a blood collection tube. As such a blood collection tube, a vacuum blood collection tube having a structure in which the opening of a test tubular container is sealed with a rubber stopper or the like and the internal space is decompressed is generally used.

  And as described in Japanese Patent Application Laid-Open No. Sho 62-227316 (Patent Document 1), a blood sampling holder to which a hollow double-ended needle extending through the bottom and extending inward and outward is attached to a bottomed cylindrical holder body However, blood is collected in combination with the blood collection tube. Specifically, by puncturing one end of the hollow double-ended needle protruding outside the blood sampling holder into the blood vessel, and connecting the other end of the hollow double-ended needle protruding into the holder body to the vacuum blood collection tube through a rubber stopper Then, blood is collected by directly flowing into the blood collection tube under reduced pressure from the blood vessel.

  By the way, as one type of blood collection method, there is a method of collecting blood from a blood line connected to a patient's blood vessel and configured outside the body in addition to collecting blood directly from the blood vessel as described above. In particular, when a blood line is configured outside the body, it is not necessary to newly puncture the patient with a hollow needle, and the burden on the patient is reduced. It is like that.

  However, when blood is collected from a blood line, generally, blood is collected by using a syringe connected to a co-infusion port installed on the blood line and sucking blood with the syringe. Therefore, it is necessary to transfer the collected blood in the syringe to a blood collection tube and store it in a sealed state. At that time, a hollow needle is attached to the lure of the syringe after blood collection, and the blood in the syringe is transferred to the blood collection tube by piercing the rubber stopper of the blood collection tube. There is also a danger. In addition, there is a treatment in which a rubber stopper is opened and a prescribed amount of blood is transferred from the syringe, but the stopper must be closed after that, and the workability is very poor.

JP-A-62-227316

  Here, the present invention has been made in the background as described above, and the problem to be solved is to easily and quickly transfer the blood collected from the blood line to the syringe through the blood line. Another object of the present invention is to provide a blood collection line structure having a novel structure that can be safely performed.

  The feature of the first aspect of the present invention made in order to solve such a problem is that (a) a holder main body that is formed into a bottomed cylindrical shape and into which a blood collection tube is inserted, and (b) the A hollow needle that protrudes inward from the bottom of the holder body and is inserted into and connected to the blood collection tube, and (c) is provided to extend outward from the bottom of the holder body, A flexible tube communicating with the hollow needle; and (d) a luer connection portion provided at a distal end portion of the flexible tube opposite to the connection end to the holder main body to which a luer of a syringe is connected. In the blood collection line structure.

  If the blood collection line structure structured according to this embodiment is used, the lure of the syringe collected from the blood line is connected to the luer connection portion, and the blood collection tube is inserted into the holder body so that the hollow needle is inserted into the blood collection tube. Thus, the blood in the syringe can be transferred to a blood collection tube through a flexible tube and sealed.

  In such work, there is no need to separately attach a hollow needle to the syringe, and since the hollow needle pierced by the blood collection tube is also stored in the holder body, erroneous puncture of the operator is prevented, It becomes possible to work safely.

  In addition, in the blood collection line structure according to this aspect, the luer connection part that lures the syringe and the hollow needle of the holder body that connects the blood collection tube are connected by a flexible flexible tube. Therefore, the connection of the syringe to the luer connection part and the connection of the blood collection tube to the hollow needle of the holder main body can be easily and reliably performed by avoiding adverse effects.

  That is, the inventor, before reaching the present invention, a hollow needle that protrudes inward from the bottom wall of the holder body and a female luer that opens outward from the bottom wall portion of the holder body, A blood collection holder with a new structure was established in communication with each other. With this blood collection holder, with the syringe lure collected from the blood line fitted and connected to the female luer, the blood collection tube is inserted into the holder body and the hollow needle is pierced into the blood collection tube. Blood can be transferred to the blood collection tube. In addition, since the hollow needle is accommodated in the holder body, erroneous puncturing by the operator is also prevented.

  However, in such a blood collection holder, the syringe lure is connected to the female luer provided on the bottom wall of the holder body with one hand, and the other hand is used to insert the blood collection tube into the holder body to make it hollow. Since the needle has to be pierced, there is a problem that the operation is difficult and the connection of the syringe to the holder body tends to become unstable.

  Thus, as a result of further research without satisfying the blood collection holder having such a structure, the present invention has been completed, and the blood collection line structure according to the present invention has a blood collection tube in the holder body. When the hollow needle is pierced into the blood collection tube, the movement of the holder main body is not absorbed by the deformation of the flexible tube and directly applied to the luer part to which the syringe is connected. Therefore, for example, the syringe connected to the luer is placed on a table or the like, and the connection to the luer part of the syringe is stably maintained, while the holder body is held by hand to easily connect the blood collection tube And it becomes possible to carry out safely.

  A second aspect of the present invention is a blood collection line structure having a structure according to the first aspect, wherein the flexible tube has a total length of 1 to 30 cm. .

  In the blood collection line structure of this aspect, by appropriately setting the length of the flexible tube, hold the holder body by hand while keeping the syringe connected to the luer part on the table or the like as described above. The blood collection tube can be more easily connected. That is, if the length of the flexible tube is shorter than 1 cm, the movement of the holder body during the connection operation of the blood collection tube is likely to be exerted on the luer part, so that the connection of the syringe may be somewhat unstable. . On the other hand, if the length of the flexible tube is longer than 30 cm, it may become unnecessarily long and handling and accommodation may become complicated, and an excessive length of the flexible tube may be caught by hands or other parts. As a result, there may be a concern that an unexpected accident may occur.

  As a further preferred aspect of the present aspect, the third aspect of the present invention is a blood collection line structure structured according to the first aspect, wherein the flexible tube has a total length of 5 to 15 cm. It is characterized by that.

  In the blood collection line structure of this aspect, the length of the flexible tube is set more appropriately than in the second aspect. That is, when the length of the flexible tube is set to 5 cm or more, the movement during the connection operation of the blood collection tube becomes more difficult to be exerted on the syringe, and the length of the flexible tube is set to less than 5 cm. As compared with the case, the connection of the syringe can be maintained more stably. In addition, since the length of the flexible tube is set to 15 cm or less, handling becomes easier, and blood remains in the flexible tube, and a specified amount of blood is accurately collected in the blood collection tube. The trouble that it becomes difficult can also be avoided effectively.

  A fourth aspect of the present invention is a blood collection line structure having a structure according to any one of the first to third aspects, wherein the flexible tube has an inner diameter of 1 to 2 mmφ. This is a feature.

  In the blood collection line structure of this aspect, by appropriately setting the inner diameter dimension of the flexible tube, a smooth blood flow that does not slow the blood collection speed can be allowed, and the remaining blood volume in the flexible tube Can be suppressed.

  A fifth aspect of the present invention is a blood collection line structure having a structure according to any one of the first to fourth aspects, wherein the luer connection portion directly fits and connects a luer of a syringe. It is characterized by being a female lure that can be used.

  In the blood collection line structure of this aspect, for example, when a male luer of a syringe is directly connected to a mixed injection port on the blood line and blood is collected in the syringe, the syringe extracted from the mixed injection port is used as it is. Thus, the male luer of the syringe can be directly fitted and connected to the luer connection portion in the blood collection line structure of the present invention.

  In addition, the female luer which comprises a luer connection part may be provided with the screw thread which protrudes on the outer peripheral surface of an opening part, and when a syringe has a luer lock, screw a syringe with respect to a luer connection part. Combined to ensure a luer connection.

  A sixth aspect of the present invention is a blood collection line structure having a structure according to any one of the first to fifth aspects, wherein the holder body, the hollow needle, the flexible tube, The luer connection part has an integral structure fixed so as not to be detached.

  In the blood collection line structure of this aspect, the blood channel is prevented from being unexpectedly divided, and blood can be more stably and reliably fed from the syringe into the blood collection tube. Note that the non-removable fixing structure means that the connection is not easily pulled out by pulling, for example, and is a structure fixed by screw fixing, adhesion, welding, or the like.

  A seventh aspect of the present invention is a blood collection line structure having a structure according to any one of the first to sixth aspects, wherein the holder body, the hollow needle, the flexible tube, and the luer connection portion. The entire finished product including the above is housed in a sterilized state in a package having a sealed structure.

  In the blood collection line structure of this aspect, the packaging body is opened and taken out immediately before use at the medical site, so that the blood collection line is provided to the site in a sterilized state and is already configured and prepared to be usable as a blood collection line. Therefore, it can be used immediately without requiring a special assembling operation or the like, and the work can be performed more easily and safely.

  According to an eighth aspect of the present invention, there is provided a blood collection line structure having a structure according to any one of the first to seventh aspects, wherein the holder main body is gradually directed from the opening toward the bottom toward the central axis. And a guide member for guiding the blood collection tube inserted into the holder main body by being inclined and projecting.

  In the blood collection line structure according to this aspect, the hollow needle protruding from the bottom wall of the holder body is further stabilized with respect to the blood collection tube by inserting the blood collection tube while being guided by the guide member onto the central axis of the holder body. And can be pierced.

  In the blood collection line structure structured according to the present invention, the force transmission between the holder main body and the connecting portion is suppressed by the deformation of the flexible tube. When the needle is inserted into the blood collection tube, the connection state of the syringe at the luer connection portion is stably maintained, and the operation of transferring the blood in the syringe to the blood collection tube through the flexible tube is easy and stable. Can be performed.

Explanatory drawing which shows the blood collection line structure as embodiment of this invention. The perspective view of the blood collection line structure shown by FIG. The expanded sectional view by the side of the holder main body in FIG. The expanded sectional view by the side of the connection part in FIG. FIG. 5 is a longitudinal cross-sectional explanatory view showing a connection state of a syringe on the connection portion side shown in FIG. FIG. 4 is a longitudinal cross-sectional explanatory view showing a state of piercing a blood collection tube on the holder main body side shown in FIG.

  Hereinafter, in order to clarify the present invention more specifically, embodiments of the present invention will be described in detail with reference to the drawings.

  1 and 2 show the entire blood collection line structure 10 as one embodiment of the present invention, and FIGS. 3 to 4 are enlarged cross-sectional views of the main part of the blood collection line structure 10. It is shown. This blood collection line structure 10 is connected to the syringe 12 by communicating, for example, a syringe 12 and a blood collection tube 14 collected from a blood line connected to a patient's blood vessel via a co-infusion port and the like. It is used for transferring the stored blood to the blood collection tube 14 and storing it in a sealed state.

  More specifically, the blood collection line structure 10 has an overall structure in which the holder main body 16 and the luer connection portion 18 are connected to each other by a flexible tube 20 and are integrally connected.

  The holder body 16 has a bottomed cylindrical shape in which a bottom wall portion 24 as a bottom portion is provided on one axial side of the substantially circular cylindrical portion 22. A flange portion 28 that protrudes from the outer peripheral surface is integrally formed with the other opening portion 26 in the axial direction of the cylindrical portion 22. The cylindrical portion 22 has an inner diameter that allows a known blood collection tube 14 to be inserted. The cylindrical portion 22 is generally formed of a synthetic resin material such as polypropylene or polyethylene.

  In addition, a holder adapter 30 is fitted and fixed in the cylindrical portion 22 for the purpose of guiding and positioning the inserted blood collection tube 14 on the central axis and ensuring the required strength. Yes. The holder adapter 30 extends toward the tubular fitting portion 32 fitted to the opening 26 of the tubular portion 22 and the bottom wall portion 24 of the tubular portion 22 and gradually toward the central axis. And a guide piece 34 as a plurality of guide members protruding in an inclined manner. The blood collection tube 14 inserted from the opening 26 of the cylindrical portion 22 is inserted into the holder main body 16 while being axially aligned by being guided by these guide pieces 34. The guide piece 34 is desirably elastically deformable to some extent. Note that one or a plurality of protrusions 35 are provided on the inner peripheral surface of the cylindrical portion 22 of the holder body 16 where the guide piece 34 is not located. The protrusion 35 is in contact with the fitting portion 32 of the holder adapter 30, eliminates a step between the holder adapter 30 and the holder body 16, and allows the blood collection tube 14 to enter smoothly.

  In addition, a cylindrical boss portion 36 that protrudes outward at the center portion is integrally formed on the bottom wall portion 24 of the holder body 16. An adapter 40 is fixed to the center hole 38 of the boss portion 36 with a screw. The adapter 40 has a substantially cylindrical shape as a whole, and a male screw 41 is provided on the outer peripheral surface. In addition, a hollow needle 42 that protrudes toward one side in the axial direction is fixed to the adapter 40. The hollow needle 42 is inserted into the center hole 44 of the adapter 40 at the base end portion, and the needle hole communicates with the center hole 44. In the present embodiment, the hollow needle 42 is fixed to the adapter 40 by the adhesive layer 45 composed of an adhesive or the like, but the fixing method of the adapter 40 and the hollow needle 42 is not limited to fixing by the adhesive, It is sufficient that the adapter 40 and the hollow needle 42 are not removable.

  Further, a needle cover (rubber seal) 46 made of a bottomed cylindrical elastic body is attached to the hollow needle 42, and the entire hollow needle 42 is covered with the needle cover 46. The needle cover 46 is attached so as to be covered from the distal end side of the hollow needle 42, and is fixed to the outer peripheral surface of the adapter 40 at the opening thereof.

  The adapter 40 is fixed to the boss portion 36 of the holder main body 16 by a male screw 41 provided on the outer peripheral surface thereof, and is fixed so as not to be removed. The hollow needle 42 covered with the needle cover 46 is connected to the holder main body 46. 16 projecting from the bottom wall 24 inwardly on the central axis.

  Furthermore, the other end portion of the adapter 40 in the axial direction protrudes outward from the bottom wall portion 24 of the holder body 16, and a luer-shaped hollow connector 48 is fixed to the protruding tip portion. Yes. The hollow connector 48 is fixed to one end of the flexible tube 20 by bonding or welding, and is fitted to the protruding tip of the adapter 40, and is welded or bonded as necessary. Thus, the inner hole of the flexible tube 20 is communicated with the needle hole of the hollow needle 42 via the adapter 40.

  Further, the flexible tube 20 is deformable and has a strength capable of maintaining a hollow structure, and has a certain degree of elasticity formed by, for example, polyvinyl chloride, polybutadiene, polyethylene, silicone, polyurethane, or the like. A thing is suitably employ | adopted.

  The inner diameter of the flexible tube 20 is not particularly limited, but the amount of remaining blood in the flexible tube 20 can be suppressed so that a smooth blood flow that does not slow the blood collection speed can be allowed. Thus, it is desirable to set it as the internal-diameter dimension of 1-2 mmphi. Further, the length of the flexible tube 20 is not particularly limited, but is preferably 1 to 30 cm, more preferably 5 to 15 cm, thereby improving workability and the flexible tube 20. The residual blood volume in the inside can be suppressed.

  Furthermore, a luer connection portion 18 is fixed to the other end of the flexible tube 20. This luer connection part 18 is made into the substantially cylindrical shape with a taper, the edge part of the flexible tube 20 is inserted with respect to the small diameter side edge part, and welding, adhesion | attachment, etc. are carried out as needed. Are fixed and communicated with each other. The luer connecting portion 18 is a female luer 49, and the male luer 50 provided on the syringe 12 is directly fitted into the luer connecting portion 18 so that the luer connecting portion 18 can be easily connected.

  In the present embodiment, a protruding male screw portion 52 that protrudes on the outer peripheral surface is formed at the opening end of the luer connection portion 18. Therefore, when a luer lock is provided on the syringe 12, the syringe 12 is more securely fixed to the luer connection portion 18 and maintained in a connected state by screwing to the male screw portion 52. It becomes possible to do.

  The blood collection line structure 10 having the above-described structure is preferably packed in a package and sterilized by irradiation with radiation in a stored state and in a sealed state. And it is made to open just before use in a medical field.

  The blood collection line structure 10 is used in the medical field as follows, for example. First, blood is stored in the syringe 12 by directly connecting the luer 50 of the syringe 12 to a blood injection line or the like on a blood line (not shown) and collecting blood. Next, the syringe 12 is removed from the blood line and directly connected by fitting the luer 50 of the syringe 12 to the luer connection portion 18 in the blood collection line structure 10 as shown in FIG. . Such a connection does not need to have the holder body 16 and can be operated with respect to the luer connection portion 18 in a state substantially independent from the holder body 16, so that the work can be facilitated. That is, due to the deformation of the flexible tube 20, communication from the syringe 12 to the holder body 16 can be easily performed. In other words, the efficiency of communication work from the syringe 12 to the blood collection tube 14 can be increased when the blood collection tube 14 described later is connected.

  Then, the syringe 12 is left standing on a table or the like while being connected to the flexible tube 20. Thereafter, the syringe 12 is left as it is, and only the holder body 16 is held, and the blood collection tube 14 is inserted into the holder body 16. As a result, as shown in FIG. 6, the blood collection tube 14 is guided by the holder adapter 30, and the plurality of guide pieces 34 of the holder adapter 30 are expanded and elastically deformed, and the rear side is substantially on the central axis. Introduced into The rubber stopper 54 at the tip of the blood collection tube 14 hits the needle cover 46, and the needle cover 46 is further pressed against the hollow needle 42. Thereafter, the hollow needle 42 protruding from the needle cover 46 is punctured and pierced by the rubber stopper 54, whereby the hollow needle 42 is communicated with the blood collection tube 14. A recess 56 is formed on the upper surface of the rubber stopper 54, and the needle cover 46 is pushed in at the distal end surface of the blood collection tube 14, that is, the bottom surface of the recess 56, so that the bottom wall 24 and the recess 56 of the holder body 16 are pressed. It is elastically deformed and stored in the gap to be formed.

  In this manner, the inside of the syringe 12 is communicated with the blood collection tube 14 through the flexible tube 20 by inserting the hollow needle 42 into the blood collection tube 14. Under this condition, the blood in the syringe 12 is fed into the blood collection tube 14 through the flexible tube 20 due to the negative pressure of the blood collection tube 14. Further, by pressing the plunger 58 of the syringe 12 as necessary, blood can be actively sent from the syringe 12 into the blood collection tube 14.

  Thereafter, when a necessary amount of blood is transferred to the blood collection tube 14, the blood collection tube 14 is removed from the holder body 16. At that time, the puncture hole of the rubber plug 54 formed by the puncture of the hollow needle 42 is closed by the elastic restoring action of the rubber plug 54. Thereby, the operation | work which seals and preserve | saves the blood in the blood collection tube 14 can be completed.

  Therefore, according to the blood collection line structure 10 of this embodiment, the blood in the syringe 12 can be transferred into the blood collection tube 14 through the flexible tube 20. Here, the holder main body 16 and the luer connection portion 18 are connected by a flexible tube 20, and the holder main body 16 and the luer connection portion 18 can be operated independently of each other. Thereby, for example, in the connection work of the syringe 12 and the luer connection part 18 and the connection work of the holder main body 16 and the blood collection tube 14, the mutual influence can be minimized, and the syringe 12 to the blood collection tube 14. The reliability and work efficiency in blood transfer can be improved.

  In addition, the connection between the syringe 12 and the flexible tube 20 in the present embodiment is made by simply fitting the male luer 50 of the syringe 12 into the female luer 49 of the luer connection portion 18 and can be easily connected. . Thereby, the improvement of the further work efficiency in the transfer of the blood from the syringe 12 to the blood collection tube 14 can be aimed at.

  Further, in the connection between the holder main body 16 and the blood collection tube 14 in the present embodiment, as shown in FIG. 6, the rubber stopper 54 of the blood collection tube 14 pushes the plurality of guide pieces 34 of the holder adapter 30 outward. Each guide piece 34 is elastically deformed. As a result, an elastic restoring force toward the inner peripheral side, that is, a force in a direction to fix the blood collection tube 14 to the holder body 16 is generated in each guide piece 34. Therefore, the blood collection tube 14 can be supported in the holder main body 16 without being inclined, and reliable blood transfer to the blood collection tube 14 can be achieved.

  Moreover, in this embodiment, the front-end | tip of the hollow needle 42 is located in the holder main body 16, and an erroneous puncture can be prevented effectively. Further, before the blood collection tube 14 is connected to the holder main body 16, the hollow needle 42 is covered with a needle cover 46, so that the hollow needle 42 is effectively damaged by contamination or dropping of the hollow needle 42 before use. Can be prevented.

  Furthermore, the members constituting the blood collection line structure 10 according to the present embodiment may be fixed by screw fixing, adhesion, welding, or the like at the connection portions of the respective members as necessary, so that they cannot be removed. It is. In particular, in the blood flow path from the luer connection part 18 to the holder main body 16, the possibility that the blood flow path is cut can be reduced or avoided by making each part non-removable.

  As mentioned above, although embodiment of this invention was explained in full detail, these are illustration to the last, Comprising: This invention is not interpreted limitedly by the specific description in these embodiment.

  For example, in the above-described embodiment, as is apparent from FIG. 3 and the like, the boss portion 36 is composed of a double peripheral wall portion on the outer peripheral side and the inner peripheral side, and corresponds to the male screw 41 on the inner peripheral surface of the inner peripheral wall portion. However, the present invention is not limited to this shape. Specifically, the boss portion 36 may be composed of one or a plurality of peripheral wall portions, and the position of the formed female screw is not limited to the inner peripheral surface of the innermost peripheral wall portion.

  Further, the adapter 40 and the hollow connector 48 of the above-described embodiment are not necessarily required in the practice of the present invention. For example, the flexible tube 20 and the holder main body 16 are directly fixed, and the inner hole of the flexible tube 20 extending outward from the holder main body 16 and the needle hole of the hollow needle 42 extending outward from the holder main body 16 are provided. You may be made into the structure connected.

10: Blood collection line structure, 12: Syringe, 14: Blood collection tube, 16: Holder body, 18: Luer connection part, 20: Flexible tube, 24: Bottom wall part, 26: Opening part, 34: Guide piece, 42: hollow needle, 49: female luer, 50: male luer

Claims (8)

A holder body into which a blood collection tube is inserted through an opening, which is a bottomed cylindrical shape;
A hollow needle that protrudes inward from the bottom of the holder body and is inserted into and connected to the blood collection tube;
A flexible tube that extends outward from the bottom of the holder body and communicates with the hollow needle;
A blood collection line structure, comprising: a luer connection portion provided at a distal end portion of the flexible tube opposite to the connection end to the holder main body, to which a luer of a syringe is connected.   The blood collection line structure according to claim 1, wherein the flexible tube has a total length of 1 to 30 cm.   The blood collection line structure according to claim 1, wherein the flexible tube has a total length of 5 to 15 cm.   The blood collection line structure according to any one of claims 1 to 3, wherein the flexible tube has an inner diameter of 1 to 2 mmφ.   The blood collection line structure according to any one of claims 1 to 4, wherein the luer connection portion is a female luer capable of directly fitting and connecting a lure of a syringe.   The said holder main body, the said hollow needle, the said flexible tube, and the said luer connection part have the integral structure fixed firmly so that removal was not possible. Blood collection line structure.   The entire finished product configured to include the holder main body, the hollow needle, the flexible tube, and the luer connection portion is accommodated in a sterilized state in a sealed package. 7. The blood collection line structure according to any one of 6 above.   The holder body is provided with a guide member that guides the blood collection tube to be inserted into the holder body by protruding from the opening toward the bottom and gradually inclining toward the central axis. 8. The blood collection line structure according to any one of 7 above.