JPH0515955U - Medical needle - Google Patents
Medical needleInfo
- Publication number
- JPH0515955U JPH0515955U JP7220791U JP7220791U JPH0515955U JP H0515955 U JPH0515955 U JP H0515955U JP 7220791 U JP7220791 U JP 7220791U JP 7220791 U JP7220791 U JP 7220791U JP H0515955 U JPH0515955 U JP H0515955U
- Authority
- JP
- Japan
- Prior art keywords
- needle
- medical needle
- attached
- dialysis treatment
- tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
(57)【要約】
【目的】 透析治療等に使用する体外循環回路に装着し
て使用する翼付医療用針の改良に関する。
【構成】 針管３を植設し翼４を装着した針基２の後方
端部に接続チュ−ブ６の外径とほぼ同じ内径を有する接
続部５を形成したことを特徴とする医療用針１。
【効果】 透析治療等に使用する体外循環回路に装着し
て使用する際、圧力上昇の軽減に効果があり、安心して
透析治療に使用することができる。
(57) [Summary] [Purpose] The present invention relates to improvement of a winged medical needle that is used by being attached to an extracorporeal circulation circuit used for dialysis treatment and the like. A medical needle characterized in that a connecting portion 5 having an inner diameter substantially equal to an outer diameter of a connecting tube 6 is formed at a rear end portion of a needle base 2 in which a needle tube 3 is implanted and a wing 4 is attached. 1. [Effect] When used by being attached to an extracorporeal circulation circuit used for dialysis treatment or the like, it is effective in reducing a pressure rise and can be used for dialysis treatment with confidence.
Description
【０００１】[0001]
本考案は、透析治療等に使用する体外循環回路に装着して使用する翼付医療用 針の改良に関する。 The present invention relates to an improvement of a winged medical needle that is attached to an extracorporeal circulation circuit used for dialysis treatment and the like.
【０００２】[0002]
図２は現在使用されている翼付医療用針２１の該略図で、針基２２の後方端部 に形成された接続チュ−ブ２６の接続部２５は、その外周に接続チュ−ブ２６の 内周面を装着するように形成されている。このため針基２２内の液体通路３１の 内径を狭く形成せざるを得なかった。 FIG. 2 is a schematic view of a winged medical needle 21 currently used, in which a connecting portion 25 of a connecting tube 26 formed at a rear end portion of a needle base 22 has a connecting tube 26 formed on its outer periphery. It is formed so that the inner peripheral surface is attached. For this reason, the inner diameter of the liquid passage 31 in the needle base 22 must be narrowed.
【０００３】 このため透析治療中に体外循環回路内の内圧が上昇しやすく流量が取れにくい 等の問題があった。そこで本考案者は以上の課題を解決するために鋭意検討を重 ねた結果次の考案に到達した。Therefore, there has been a problem that the internal pressure in the extracorporeal circulation circuit is likely to rise during dialysis treatment and the flow rate is difficult to obtain. Therefore, the inventor arrived at the next inventor as a result of intensive studies to solve the above problems.
【０００４】[0004]
図１は本考案の医療用針１の概略図を示す。医療用針１は、針管３を植設し外 周に翼４を形成した針基２の後方端部に、接続チュ−ブ６の外径とほぼ同じ内径 を有する接続部５が形成されている。 FIG. 1 shows a schematic view of a medical needle 1 of the present invention. In the medical needle 1, a connecting portion 5 having an inner diameter substantially the same as the outer diameter of the connecting tube 6 is formed at the rear end portion of a needle base 2 in which a needle tube 3 is implanted and wings 4 are formed on the outer circumference. There is.
【０００５】 接続部５を前記のように形成するため、針基２内の液体通路１１の径は、従来 の医療用針２１の液体通路３１の径より大きく形成することができる（従来の医 療用針の液体通路３１の径は、接続チュ−ブ２６の内径より、０．５から２．０ ｍｍ小さくしなければならないのに対し、本考案の医療用針の液体通路１１の径 は、接続チュ−ブの内径とほぼ同じとすることができる）。接続部５の内周面に は接続チュ−ブ６の外周面が装着されている。Since the connecting portion 5 is formed as described above, the diameter of the liquid passage 11 in the needle base 2 can be formed larger than the diameter of the liquid passage 31 of the conventional medical needle 21 (conventional medical device). The diameter of the liquid passage 31 of the medical needle must be smaller than the inner diameter of the connecting tube 26 by 0.5 to 2.0 mm, while the diameter of the liquid passage 11 of the medical needle of the present invention is smaller. , Which can be approximately the same as the inner diameter of the connecting tube). The outer peripheral surface of the connecting tube 6 is mounted on the inner peripheral surface of the connecting portion 5.
【０００６】 また７は射出成形により形成された針カバ−で、後方内周面にはネジ突起部８ が形成されている。そして該ネジ突起部８に対向する針基２の前方外周面には、 滅菌時の熱により、ネジ溝９が形成され、針カバ−７と針基２をねじ嵌合するこ とにより針カバ−７の抜け防止を図っている。Reference numeral 7 is a needle cover formed by injection molding, and a screw protrusion 8 is formed on the rear inner peripheral surface. A thread groove 9 is formed on the front outer peripheral surface of the needle base 2 facing the screw projection portion 8 by heat during sterilization. -7 is prevented from coming off.
【０００７】 医療用針１を体外循環回路に接続して、ｉｎ ｖｉｔｒｏ、ｉｎ ｖｉｖｏで 体外循環回路内の圧力上昇試験を行ったところ、本考案の医療用針１は、従来の 医療用針２１に比べて圧力上昇が１０から２０ｍｍＨｇ低値であるという良好な 結果が得られた。When the pressure rise test in the extracorporeal circulation circuit was performed in vitro and in vivo by connecting the medical needle 1 to the extracorporeal circulation circuit, the medical needle 1 of the present invention was found to have the conventional medical needle 21. The good result that the pressure rise is 10 to 20 mmHg lower than that of the above was obtained.
【０００８】[0008]
以上説明したように本考案では、透析治療等に使用する体外循環回路に装着し て使用する際、圧力上昇の軽減に効果があり、安心して透析治療に使用すること ができる。 As described above, according to the present invention, when it is used by being attached to an extracorporeal circulation circuit used for dialysis treatment or the like, it has an effect of reducing a pressure increase, and can be safely used for dialysis treatment.
【図１】本考案の医療針の概略図FIG. 1 is a schematic view of a medical needle of the present invention.
【図２】従来の医療針の概略図FIG. 2 is a schematic view of a conventional medical needle.
【符号の説明】 １ 医療用針 ２ 針基 ３ 針管 ４ 翼 ５ 接続部 ６ 接続チュ−ブ ７ 針カバ−[Explanation of Codes] 1 Medical needle 2 Needle base 3 Needle tube 4 Wing 5 Connection part 6 Connection tube 7 Needle cover
Claims (1)
後方端部に接続チュ−ブ６の外径とほぼ同じ内径を有す
る接続部５を形成したことを特徴とする医療用針１。1. A medical treatment characterized in that a connecting portion (5) having an inner diameter substantially the same as the outer diameter of a connecting tube (6) is formed at the rear end portion of a needle base (2) in which a needle tube (3) is implanted and a wing (4) is attached. Needle 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7220791U JPH0515955U (en) | 1991-08-14 | 1991-08-14 | Medical needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7220791U JPH0515955U (en) | 1991-08-14 | 1991-08-14 | Medical needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0515955U true JPH0515955U (en) | 1993-03-02 |
Family
ID=13482569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7220791U Pending JPH0515955U (en) | 1991-08-14 | 1991-08-14 | Medical needle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0515955U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7004898B2 (en) | 2002-07-17 | 2006-02-28 | Kabushiki Kaisha Kubota Seisakusho | Rotor for a centrifugal separator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS415910Y1 (en) * | 1964-02-03 | 1966-03-28 | ||
| JPS6063063A (en) * | 1983-09-16 | 1985-04-11 | テルモ株式会社 | Production of medical device |
| JPS6179467A (en) * | 1984-09-28 | 1986-04-23 | 川澄化学工業株式会社 | Tube connection of medical needle |
| JPH01317453A (en) * | 1988-03-03 | 1989-12-22 | Terumo Corp | Medical needle with vane |
-
1991
- 1991-08-14 JP JP7220791U patent/JPH0515955U/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS415910Y1 (en) * | 1964-02-03 | 1966-03-28 | ||
| JPS6063063A (en) * | 1983-09-16 | 1985-04-11 | テルモ株式会社 | Production of medical device |
| JPS6179467A (en) * | 1984-09-28 | 1986-04-23 | 川澄化学工業株式会社 | Tube connection of medical needle |
| JPH01317453A (en) * | 1988-03-03 | 1989-12-22 | Terumo Corp | Medical needle with vane |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7004898B2 (en) | 2002-07-17 | 2006-02-28 | Kabushiki Kaisha Kubota Seisakusho | Rotor for a centrifugal separator |
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