JP2009136508A - Double-ended needle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provided a double-ended needle, in which the points of hollow needles are not exposed, in which the integrations of two containers to transfer chemicals with plugs are improved, and in which no liquid leakage occurs during the chemical transfer. <P>SOLUTION: The double-ended needle (1) is constituted by jointing its two bottomed cylinders (2 and 3) through a connector (4) with their outer bottom faces being in opposite directions. Hollow needles (5 and 6) are protruded into the individual bottomed cylinders (2 and 3) from their inner bottom faces so that their internal holes are connected through a passage (7) extending through the connector. A tubular member (8), which is disposed halfway in of the connector (4), is made to communicate with the tip of one hollow needle (5) through a vent hole (9). The hollow needles (5 and 6) are not exposed so that they can resolve the danger of hurting a finger tip. Moreover, the container, from which the blood is transfused, can be easily brought into a positive pressure state. When the hollow needles are individually jointed to the mouthpieces of the two containers, the mouths of the two containers including the plugs are covered with the bottomed cylinders and gripped from the outside, and the plugs and the hollow needles are frictionally jointed so that the integration feel with the containers is improved. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention is, for example, a storage container (original container) that is connected to a syringe that collects blood and introduces the collected blood in a vacuum, and blood is introduced from the storage container and the serum is separated or introduced by a filter during the introduction. The present invention relates to a double-ended needle that connects a separation container (receiving container) for subsequent centrifugation.

In general, the double-ended needle is used for transferring (transferring) a medicine (including blood) contained in a vial or the like to another container. For example, a double-ended needle according to Japanese Patent Application Laid-Open No. 2002-238879 is provided with one hollow needle inserted into a mouth rubber stopper such as a vial (original container) and the other end inserted into a mouth rubber stopper of another container (receiving container). When the hollow needle is provided in the opposite direction through the gripping plate, both the hollow needles are inserted into both rubber stoppers, and the vial is placed at a high position, the medicine is transferred to the receiving container using the hydraulic pressure. It was. This is because the double-ended needle according to the above-mentioned JP-A-2002-238999 is designed so that when a hollow needle is inserted into a mouth rubber stopper of a vial bottle or the like, outside air can be introduced into the bottle through a passage formed in the hollow needle. It was. Therefore, the operation of inserting a filter injection needle into a vial or the like and applying positive pressure is unnecessary.
JP 2002-238879 A

  However, since the double-ended needles are hollow needles provided in the direction opposite to each other through the gripping plate, each needle is exposed, so there is a risk of damaging the fingertips, etc. The integration with the container when inserted into both the mouths was only the friction between the stoppers and the needles of the both mouths, and there was no guarantee that they would be securely fixed. In addition, for example, when transferring blood using a vacuum to a separation container that removes serum from a blood storage container, there is a risk of causing liquid leakage from a fine gap formed between the plug body and the needle body of both mouths. was there.

  The present invention is for solving the above-mentioned problems, and the object of the present invention is that the tip of the hollow needle is not exposed and integration with the stoppers of both containers for transferring the chemical solution is good. In addition, it is an object of the present invention to provide a double-ended needle that does not leak at all during chemical transfer.

  In order to achieve the above-mentioned object, the double-ended needle according to the present invention connects two bottomed cylinders with their outer bottom surfaces in the direction opposite to each other via a connecting body, and is hollow from the inner bottom surface in each of the bottomed cylinders. A needle is protruded, and the inner holes of the hollow needle are connected to each other through a passage penetrating the connecting body, and a tube provided in the middle of the connecting body is connected to a vent hole at the tip of the one hollow needle. The hollow needle is not exposed.

  Further, the double-ended needle according to the invention described in claim 2 is characterized in that an opening is provided opposite to the inner bottom of the bottomed tube on the hollow needle side without the vent hole, The stopper was held in the bottomed cylinder when the previous container was separated.

  Furthermore, the double-ended needle according to the invention described in claim 3 is characterized in that an air filter is loaded in the tube body, and the container from which the chemical solution is transferred can be made positive pressure in a state where foreign substances floating in the air are removed. It was configured as follows.

  According to the present invention, it is used by inserting a hollow needle having a vent into the mouthpiece of the transition source container and inserting the other hollow needle into the mouthpiece of the destination container. The provided hollow needle is not exposed and can eliminate the risk of damaging the fingertips. Moreover, the transfer source container for transferring blood can be easily positively pressurized, and when a hollow needle is connected to the stoppers of both containers, the bottomed cylinder covers the mouths of both containers including the stoppers. Since it is gripped from the outside and the stopper and the hollow needle are coupled by friction, it has a good sense of unity with the container and is not only securely fixed, but also there is no fine gap between the stopper and the hollow needle. Various excellent effects such as no risk of liquid leakage are exhibited.

  In addition, according to the invention described in claim 2, since the stopper is suspended in the bottomed cylinder when the transfer destination container is cut off after the end of the transfer of the chemical solution, it cannot be used twice, such as hospital infection It has an excellent effect that can be prevented.

  Furthermore, according to the invention described in claim 3, there is an excellent effect that foreign substances such as pathogenic bacteria that may float in the room during the transfer of the chemical solution do not enter the transfer source container.

  Next, the best mode of the present invention will be described with reference to the drawings. 1 is an external perspective view of the double-ended needle of the present application, FIG. 2 is an enlarged cross-sectional view of the double-ended needle of the present application, FIG. 3 is a chemical solution transfer procedure, (a) before connection, (b) after transfer, (c) is the transfer destination. This is the case when the container is separated.

  Reference numeral 1 denotes a double-ended needle of the present application. The two bottomed cylinders 2 and 3 constituting the double-ended needle 1 of the present application have outer bottom surfaces 2a and 3a joined to each other via a connecting body 4 in a reverse direction. Hollow needles 5, 6 project from the inner bottom surface of the bottomed cylinders 2, 3. The inner holes of the hollow needles 5 and 6 are connected to each other through a passage 7 that penetrates the connecting body 4. A tube 8 is provided in the middle of the connecting body 4, and a vent 9 communicates with the tube 8 and the tip of one hollow needle 5.

  The two bottomed cylinders 2 and 3, the connecting body 4 and the hollow needles 5 and 6 are made of transparent plastic. The connecting body 4 includes a shaft portion 4a constituting a central portion and rib pieces 4b, 4b ', 4b "projecting in three directions except for the upper surface on which the tube body 8 is provided from the shaft portion 4a. The plastic material is not particularly limited as long as it is strong against chemicals, excellent in gas barrier properties (property of gas permeation) and has transparency.

  Of the two bottomed cylinders 2 and 3 of the double-ended needle 1 of the present application, one bottomed cylinder (a bottomed cylinder provided with a hollow needle 5 having a vent hole 9) 2 is shown in FIG. When the transfer source container 10 containing the blood (which may be a drug solution other than blood) A is confronted in advance and inserted as shown by the arrow A, it is inserted into the mouth of the container 10 as shown in FIG. The hollow needle 5 is inserted into the plug 11. Next, as shown in FIG. 3A, when the transition destination vacuum container 12 opposed to the other bottomed cylinder 3 is inserted as shown by an arrow B, the container 12 is shown in FIG. The hollow needle 6 is inserted into the spigot 13 fitted in the mouth portion. In the transfer source container 10, for example, blood is stored from a syringe connected to a syringe (not shown) collected from a human body via a connector (not shown).

  After the container 10 is connected to one bottomed tube 2 of the double-ended needle 1 of the present application as described above, the transfer-destination container 12 that has been evacuated in advance is connected to the other bottomed tube 3. When connected, the blood in the transfer source container 10 is vacuum introduced into the transfer destination container 12. The blood introduced into the transfer destination container 12 by vacuum is separated into serum B by the special filter 12 'during the introduction. In this case, instead of using the special filter 12 ′ in the transfer destination container 12, the blood after vacuum introduction may be applied to a centrifuge (not shown) to separate the serum.

  The transfer source container 10 is originally a evacuated container, but the degree of vacuum has already been reduced when blood is introduced into a vacuum by connecting to a syringe collected from a human body. On the other hand, the transfer destination container 12 is in a high vacuum state in advance, and the high degree of vacuum is reliably maintained by the rubber elasticity of the spigot 13 fitted into the mouth portion.

  When the container 12 of the transfer destination is inserted deeply into the other bottomed cylinder 3 of the double-ended needle 1 together with the stopper 13 fitted in the mouth portion thereof, the container 12 is opposed to the inner bottom of the bottomed cylinder 3. The flanges 13 'projecting around the cap 13 of the container 12 are fitted into the open holes 14a and 14b. Therefore, when the transfer destination container 12 is pulled out from the bottomed tube 3 as shown in FIG. 3C after the blood (chemical solution) is transferred, the plug 13 is held in the bottomed tube 3. . In this case, cut grooves 15a and 15b are provided along both sides of the end edges 14a 'and 14b' of the openings 14a and 14b of the bottomed tube 3, and the end edges 14a 'and 14b' are the flanges of the plug 13. It is good to make it easy to bite into the step portion of 13 '.

  An air filter 16 is loaded on the tube 8 provided in the middle of the connecting body 4. This is effective in preventing foreign substances such as pathogens that may be floating in the hospital room during the transfer of the chemical solution from entering the transfer source container (not dissolved in the chemical solution). The filter may be any filter that allows air to pass but not water (moisture), and may be a bundle of fibers, a woven fabric, or a solid such as sintered nylon.

  Next, the operation of the double-ended needle 1 will be described. First, a transfer source container 10 containing a chemical solution (including blood) is inserted into one bottomed tube (having a hollow needle 5 having a vent hole 9) 2 of the double-ended needle 1 of the present application. At the same time, the hollow needle 5 is inserted into the stopper 11 fitted in the mouth of the container 10.

  Next, the transfer destination vacuum container 12 is inserted into the other bottomed tube 3 of the double-ended needle 1 of the present application. At the same time, the hollow needle 6 is inserted into the cap 13 fitted into the mouth of the container 12. As a result, the inside of the transition source container 10 becomes positive pressure due to the air taken from the tip of the hollow needle 5 through the vent hole 9 from the tube body 8 provided in the middle of the connecting body 4. The chemical solution in 10 moves through the passage 7 penetrating the connecting body 4 into the transfer destination vacuum container 12 using the liquid pressure.

  As described above, when the drug solution introduced (received) from the transfer source container 10 to the transfer destination container 12 is blood A, the serum B is separated and removed by the special filter 12 'during the vacuum introduction. The test (or inspection). However, the method of using the chemical solution introduced (received) into the transfer destination container 12 is not limited.

  The double-ended needle of the present application is, for example, a container that is connected to a syringe collected from the human body and vacuum-introduced blood is collected, and blood is vacuum-introduced from the container and serum is separated by a filter during the introduction or centrifuged after introduction Therefore, it is highly useful for medical use or examination.

It is an external appearance perspective view of this application double-ended needle. It is an expanded sectional view of this application double-ended needle. In the chemical solution transfer procedure, (a) is before connection, (b) is after transfer, and (c) is when the transfer destination container is disconnected.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 This application double-ended needle 2, 3 Bottomed cylinder 4 Connection body 5, 6 Hollow needle 7 Passage 8 Tubing body 9 Vent hole 10 Migration source container 11 Mouth stopper 12 Destination container 13 Mouth stopper 13 'Hook 14a, 14b Hole 15a, 15b Cut groove 16 Air filter A Chemical liquid (including blood)
B Serum

Claims (3)

  Two bottomed cylinders are connected to each other through the connecting body in the direction opposite to the bottom, and hollow needles are projected from the bottom of each bottomed cylinder, and the inner holes of the hollow needles are connected to each other. A double-ended needle characterized in that it is connected via a passage penetrating the body, and a tubular body provided in the middle of the coupling body is communicated with the tip of the one hollow needle through a vent hole.   The double-ended needle according to claim 1, wherein an opening is provided opposite to the inner bottom of the bottomed tube on the hollow needle side without the air hole.   The double-ended needle according to claim 1 or 2, wherein an air filter is loaded in the tubular body.

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