JP2006043392A - System and instrument for preventing thrombus occlusion - Google Patents

System and instrument for preventing thrombus occlusion Download PDF

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JP2006043392A
JP2006043392A JP2004256308A JP2004256308A JP2006043392A JP 2006043392 A JP2006043392 A JP 2006043392A JP 2004256308 A JP2004256308 A JP 2004256308A JP 2004256308 A JP2004256308 A JP 2004256308A JP 2006043392 A JP2006043392 A JP 2006043392A
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indwelling needle
rod
needle lumen
thrombus
thrombus occlusion
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Tatsuya Nakatsuka
龍也 中塚
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a thrombus occlusion preventing instrument for preventing thrombus occlusion in the inner cavity of an indwelling needle when infusing is not performed concerning the indwelling needle to be used in performing infusing, or the like. <P>SOLUTION: The thrombus occlusion preventing instrument 5 includes a bar shape body 1 for preventing the reflux of blood to the indwelling needle inner cavity 7 and the thrombus occlusion by insertion to the indwelling needle inner cavity 7. When the infusing is not performed, the instrument 5 is mounted on the indwelling needle 6, thereby reliably preventing the thrombus occlusion of the indwelling needle inner cavity 7 without performing heparin lock. The infusing is re-started by removing the thrombus occlusion preventing instrument 5 from the indwelling needle 6. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、輸液等を行う際に使用される留置針において、非輸液時に、血栓により留置針内腔が閉塞するのを防止するためのものである。  The present invention is to prevent an indwelling needle lumen from being blocked by a thrombus during non-infusion in an indwelling needle used when performing infusion or the like.

留置針を使用し間欠輸液する場合、非輸液時には、血栓により留置針内腔が閉塞しないように、留置針内腔をヘパリンロックする必要があった。  When intermittent infusion is performed using an indwelling needle, it is necessary to heparin-lock the indwelling needle lumen so that the indwelling needle lumen is not blocked by a thrombus during non-infusion.

発明が解決しようとする課題Problems to be solved by the invention

ヘパリンロックする場合、あらかじめヘパリン溶液を注射器に吸って用意する必要があり、手技も煩雑であった。また、ヘパリンロック後時間が経過すると、血栓により留置針内腔が閉塞する可能性が大きくなり、効果が不確実であった。またヘパリンロックする場合、少量ではあるが体内にヘパリンを注入することになり、ヘパリンに対してアレルギーのある患者などでは、持続輸液するか、留置針を抜去するしかなかった。  In order to lock heparin, it is necessary to prepare a heparin solution by sucking it into a syringe in advance, and the procedure is complicated. Moreover, when the time after heparin lock passed, the possibility that the indwelling needle lumen was blocked by a thrombus increased, and the effect was uncertain. In addition, when heparin is locked, heparin is injected into the body in a small amount, but in patients who are allergic to heparin, there is no choice but to infuse continuously or remove the indwelling needle.

課題を解決するための手段Means for solving the problem

本発明は、留置針内腔に挿入することにより留置針内腔への血液の逆流と血栓閉塞を防止できる棒状体を具備した血栓閉塞防止具で、非輸液時に、前記血栓閉塞防止具を留置針に装着することにより、ヘパリンロックすることなく留置針内腔の血栓閉塞を確実に防止できる。前記血栓閉塞防止具を留置針より抜去すれば、輸液を再開することができる。  The present invention relates to a thrombus obstruction prevention device comprising a rod-like body that can prevent backflow of blood into the indwelling needle lumen and thrombus occlusion by being inserted into the indwelling needle lumen. By attaching to the needle, the thrombus occlusion in the indwelling needle lumen can be reliably prevented without heparin lock. If the thrombus occlusion prevention device is removed from the indwelling needle, the infusion can be resumed.

本発明の血栓閉塞防止具を図面に示した実施例を用いて説明する。
図１は、本発明第一実施例の血栓閉塞防止具５を留置針６に装着した際の断面概略図である。
血栓閉塞防止具５は、留置針内腔７に挿入することにより留置針内腔７への血液の逆流と血栓閉塞を防止できる棒状体１と、棒状体１の一端に形成され、棒状体１に直接触れることなく棒状体１の留置針内腔７への出し入れを操作できる保持部２と、棒状体１を留置針内腔７の適切な位置に固定するための固定部３からなる。この第一実施例では、固定部３の形状を、留置針６の基端部に液密性に嵌合する形状とすることにより、固定部３と留置針６の基端部とが嵌合した際の摩擦抵抗によって、棒状体１を留置針内腔７の適切な位置に固定することができる。さらに固定部３は、外部から細菌や異物が留置針内腔７へ侵入するのを防止する密閉部４としての機能も有している。The thrombus occlusion prevention device of the present invention will be described with reference to the embodiments shown in the drawings.
FIG. 1 is a schematic cross-sectional view when the thrombus occlusion prevention device 5 of the first embodiment of the present invention is attached to an indwelling needle 6.
The thrombus occlusion prevention device 5 is formed at one end of the rod-like body 1 and the rod-like body 1 that can be prevented from being inserted into the indwelling needle lumen 7 to prevent blood backflow and thrombus occlusion into the indwelling needle lumen 7. The holding part 2 which can operate the rod-shaped body 1 to / from the indwelling needle lumen 7 without directly touching the rod-shaped body 1 and the fixing part 3 for fixing the rod-shaped body 1 to an appropriate position of the indwelling needle lumen 7. In this first embodiment, the fixing portion 3 is shaped to fit in a liquid tight manner with the proximal end portion of the indwelling needle 6 so that the fixing portion 3 and the proximal end portion of the indwelling needle 6 are fitted. The rod-shaped body 1 can be fixed at an appropriate position of the indwelling needle lumen 7 by the frictional resistance at the time. Furthermore, the fixing part 3 also has a function as a sealing part 4 for preventing bacteria and foreign substances from entering the indwelling needle lumen 7 from the outside.

血栓閉塞防止具５を留置針６に装着した際、血管内から留置針内腔７に血液が逆流しないように、棒状体１の形状は、少なくとも留置針６の先端部では留置針内腔７に液密性に嵌合する形状であり、棒状体１の長さは、留置針６の先端よりわずかに血管内に出る程度が適当である。棒状体１の材質は、柔軟性にとみ、抗血栓性にすぐれた材質が適している。  In order to prevent blood from flowing back from the blood vessel to the indwelling needle lumen 7 when the thrombus occlusion prevention device 5 is attached to the indwelling needle 6, the shape of the rod 1 is at least at the distal end of the indwelling needle 6. The rod-like body 1 has a shape that fits in a liquid-tight manner. The material of the rod-like body 1 is suitable for its flexibility and excellent antithrombogenicity.

図２は、本発明第一実施例の血栓閉塞防止具５を、内部に逆流防止弁８を設置した留置針６に装着した際の断面概略図である。
棒状体１は、留置針６の内部に設置された逆流防止弁８を液密性に挿通可能である。
図３は、本発明第一実施例の血栓閉塞防止具５を、逆流防止装置９を外部に接続した留置針６に装着した際の断面概略図である。
棒状体１は、留置針６の外部に接続された逆流防止装置９を液密性に挿通可能である。FIG. 2 is a schematic cross-sectional view when the thrombus occlusion prevention device 5 of the first embodiment of the present invention is attached to an indwelling needle 6 in which a backflow prevention valve 8 is installed.
The rod-like body 1 can be inserted liquid-tightly through a backflow prevention valve 8 installed inside the indwelling needle 6.
FIG. 3 is a schematic cross-sectional view when the thrombus occlusion prevention device 5 of the first embodiment of the present invention is attached to the indwelling needle 6 to which the backflow prevention device 9 is connected to the outside.
The rod-like body 1 can be inserted liquid-tightly through a backflow prevention device 9 connected to the outside of the indwelling needle 6.

図４は、本発明第二実施例の血栓閉塞防止具５を留置針６に装着した際の断面概略図である。
血栓閉塞防止具５は、留置針内腔７に挿入することにより留置針内腔７への血液の逆流と血栓閉塞を防止できる棒状体１と、棒状体１の一端に形成され、棒状体１に直接触れることなく棒状体１の留置針内腔７への出し入れを操作できる保持部２と、棒状体１を留置針内腔７の適切な位置に固定するための固定部３と、外部から細菌や異物が留置針内腔７へ侵入するのを防止する密閉部４からなる。固定部３には、留置針６の基端部に螺着するためのねじ山１０を設けてあり、これにより棒状体１を留置針内腔７の適切な位置により確実に固定することができる。FIG. 4 is a schematic cross-sectional view when the thrombus occlusion prevention device 5 of the second embodiment of the present invention is attached to the indwelling needle 6.
The thrombus occlusion prevention device 5 is formed at one end of the rod-like body 1 and the rod-like body 1 that can be prevented from being inserted into the indwelling needle lumen 7 to prevent blood backflow and thrombus occlusion into the indwelling needle lumen 7. A holding part 2 that can be operated to insert and remove the rod-shaped body 1 into and from the indwelling needle lumen 7 without directly touching, a fixing part 3 for fixing the rod-shaped body 1 to an appropriate position of the indwelling needle lumen 7, and an external It consists of a sealing part 4 that prevents bacteria and foreign substances from entering the indwelling needle lumen 7. The fixing portion 3 is provided with a thread 10 for screwing onto the proximal end portion of the indwelling needle 6, whereby the rod-like body 1 can be reliably fixed at an appropriate position of the indwelling needle lumen 7. .

前記第一実施例ならびに第二実施例に限らず、間欠輸液する際に、非輸液時には、留置針内腔７への血液の逆流と血栓閉塞を防止できる棒状体１を留置針内腔７に挿入し、輸液時には、前記棒状体１を留置針内腔７より抜去してなる血栓閉塞防止システムを用いれば、非輸液時に、ヘパリンロックすることなく留置針内腔の血栓閉塞を確実に防止できる。  Not only in the first embodiment and the second embodiment, the rod-like body 1 capable of preventing the backflow of blood to the indwelling needle lumen 7 and the thrombus occlusion in the indwelling needle lumen 7 when intermittent infusion is performed. By using a thrombus occlusion prevention system in which the rod-like body 1 is removed from the indwelling needle lumen 7 during insertion and infusion, thrombus occlusion in the indwelling needle lumen can be reliably prevented without heparin lock during non-infusion. .

発明の効果The invention's effect

本発明の血栓閉塞防止システムならびに血栓閉塞防止具を用いれば、ヘパリンロックすることなく、留置針内腔の血栓閉塞を長時間にわたって、確実にかつ容易に防止することが可能である。  By using the thrombus occlusion prevention system and the thrombus occlusion prevention device of the present invention, it is possible to reliably and easily prevent the thrombus occlusion in the indwelling needle lumen for a long time without heparin locking.

本発明第一実施例の血栓閉塞防止具を留置針に装着した際の断面概略図である。It is a cross-sectional schematic diagram when the thrombus occlusion prevention device of the first embodiment of the present invention is attached to an indwelling needle. 本発明第一実施例の血栓閉塞防止具を、内部に逆流防止弁を設置した留置針に装着した際の断面概略図である。It is the cross-sectional schematic at the time of mounting | wearing the indwelling needle which installed the backflow prevention valve inside the thrombus obstruction | occlusion prevention tool of 1st Example of this invention. 本発明第一実施例の血栓閉塞防止具を、逆流防止装置を外部に接続した留置針に装着した際の断面概略図である。It is a cross-sectional schematic diagram when the thrombus occlusion prevention device of the first embodiment of the present invention is attached to an indwelling needle having a backflow prevention device connected to the outside. 本発明第二実施例の血栓閉塞防止具を留置針に装着した際の断面概略図である。It is a cross-sectional schematic diagram at the time of mounting the thrombus occlusion prevention device of the second embodiment of the present invention on an indwelling needle.

符号の説明Explanation of symbols

１ 棒状体
２ 保持部
３ 固定部
４ 密閉部
５ 血栓閉塞防止具
６ 留置針
７ 留置針内腔
８ 逆流防止弁
９ 逆流防止装置
１０ ねじ山DESCRIPTION OF SYMBOLS 1 Rod-shaped body 2 Holding part 3 Fixing part 4 Sealing part 5 Thrombus obstruction prevention tool 6 Indwelling needle 7 Indwelling needle lumen 8 Backflow prevention valve 9 Backflow prevention apparatus 10 Thread

Claims (6)

間欠輸液する際に、非輸液時には、留置針内腔（７）への血液の逆流と血栓閉塞を防止できる棒状体（１）を留置針内腔（７）に挿入し、輸液時には、前記棒状体（１）を留置針内腔（７）より抜去してなる血栓閉塞防止システム。During intermittent infusion, a rod-like body (1) that can prevent backflow of blood to the indwelling needle lumen (7) and thrombus occlusion is inserted into the indwelling needle lumen (7) at the time of non-infusion. A thrombus occlusion prevention system obtained by removing the body (1) from the indwelling needle lumen (7). 留置針内腔（７）に挿入することにより留置針内腔（７）への血液の逆流と血栓閉塞を防止できる棒状体（１）を具備した血栓閉塞防止具（５）。A thrombus occlusion prevention device (5) provided with a rod-like body (1) that can prevent backflow of blood to the indwelling needle lumen (7) and thrombus occlusion by being inserted into the indwelling needle lumen (7). 留置針内腔（７）に挿入することにより留置針内腔（７）への血液の逆流と血栓閉塞を防止できる棒状体（１）と、棒状体（１）に直接触れることなく、棒状体（１）の留置針内腔（７）への出し入れを操作できる保持部（２）と、棒状体（１）を留置針内腔（７）の適切な位置に固定するための固定部（３）からなる血栓閉塞防止具（５）。A rod-like body (1) that can prevent backflow of blood and thrombus occlusion to the indwelling needle lumen (7) by being inserted into the indwelling needle lumen (7), and a rod-like body without directly touching the rod-like body (1) A holding part (2) capable of operating the (1) to and from the indwelling needle lumen (7), and a fixing part (3 for fixing the rod-like body (1) to an appropriate position of the indwelling needle lumen (7). A thrombus obstruction prevention device (5). 留置針内腔（７）に挿入することにより留置針内腔（７）への血液の逆流と血栓閉塞を防止できる棒状体（１）と、棒状体（１）に直接触れることなく、棒状体（１）の留置針内腔（７）への出し入れを操作できる保持部（２）と、棒状体（１）を留置針内腔（７）の適切な位置に固定するための固定部（３）と、外部から細菌や異物が留置針内腔（７）へ侵入するのを防止する密閉部（４）からなる血栓閉塞防止具（５）。A rod-like body (1) that can prevent backflow of blood and thrombus occlusion to the indwelling needle lumen (7) by being inserted into the indwelling needle lumen (7), and a rod-like body without directly touching the rod-like body (1) A holding part (2) capable of operating the (1) to and from the indwelling needle lumen (7), and a fixing part (3 for fixing the rod-like body (1) to an appropriate position of the indwelling needle lumen (7). ) And a thrombus occlusion prevention device (5) comprising a sealed portion (4) for preventing bacteria and foreign substances from entering the indwelling needle lumen (7) from the outside. 留置針（６）の内部に設置された逆流防止弁（８）あるいは、留置針（６）の外部に接続された逆流防止装置（９）を、棒状体（１）が液密性に挿通可能な請求項１記載の血栓閉塞防止システム。The rod-like body (1) can be inserted liquid-tightly into the backflow prevention valve (8) installed inside the indwelling needle (6) or the backflow prevention device (9) connected to the outside of the indwelling needle (6). The thrombus occlusion prevention system according to claim 1. 留置針（６）の内部に設置された逆流防止弁（８）あるいは、留置針（６）の外部に接続された逆流防止装置（９）を、棒状体（１）が液密性に挿通可能な請求項２または３または４に記載の血栓閉塞防止具（５）。The rod-like body (1) can be inserted liquid-tightly into the backflow prevention valve (8) installed inside the indwelling needle (6) or the backflow prevention device (9) connected to the outside of the indwelling needle (6). The thrombus obstruction prevention device (5) according to claim 2, 3 or 4.
JP2004256308A 2004-08-05 2004-08-05 System and instrument for preventing thrombus occlusion Pending JP2006043392A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016511083A (en) * 2013-03-12 2016-04-14 マグノリア メディカル テクノロジーズ，インコーポレイテッド Method and apparatus for selectively occluding a lumen of a needle
KR102257208B1 (en) * 2021-04-12 2021-05-27 주재욱 Intravenous tube catheter to prevent clot formation and leackage in a catheter

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08187286A (en) * 1994-11-11 1996-07-23 Ikufumi Yamada Intravascular indwelling needle with separate take out opening for inner tube
JPH11206888A (en) * 1998-01-20 1999-08-03 Clinical Supply:Kk Implement for insertion into blood vessel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08187286A (en) * 1994-11-11 1996-07-23 Ikufumi Yamada Intravascular indwelling needle with separate take out opening for inner tube
JPH11206888A (en) * 1998-01-20 1999-08-03 Clinical Supply:Kk Implement for insertion into blood vessel

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016511083A (en) * 2013-03-12 2016-04-14 マグノリア メディカル テクノロジーズ，インコーポレイテッド Method and apparatus for selectively occluding a lumen of a needle
CN108433732A (en) * 2013-03-12 2018-08-24 木兰医药技术股份有限公司 Device and method for the tube chamber for selectively blocking needle body
US10478109B2 (en) 2013-03-12 2019-11-19 Magnolia Medical Technologies, Inc. Methods and apparatus for selectively occluding the lumen of a needle
CN108433732B (en) * 2013-03-12 2021-05-28 木兰医药技术股份有限公司 Apparatus and method for selectively occluding a lumen of a needle body
US11439332B2 (en) 2013-03-12 2022-09-13 Magnolia Medical Technologies, Inc. Methods and apparatus for selectively occluding the lumen of a needle
KR102257208B1 (en) * 2021-04-12 2021-05-27 주재욱 Intravenous tube catheter to prevent clot formation and leackage in a catheter
WO2022220332A1 (en) * 2021-04-12 2022-10-20 주재욱 Intravenous tube catheter for preventing leakage and thrombus formation in catheter tube

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