JP2002248170A - Flashback needle - Google Patents
Flashback needleInfo
- Publication number
- JP2002248170A JP2002248170A JP2001049722A JP2001049722A JP2002248170A JP 2002248170 A JP2002248170 A JP 2002248170A JP 2001049722 A JP2001049722 A JP 2001049722A JP 2001049722 A JP2001049722 A JP 2001049722A JP 2002248170 A JP2002248170 A JP 2002248170A
- Authority
- JP
- Japan
- Prior art keywords
- hub
- cannula
- shaft portion
- convex lens
- flashback
- 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.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150015—Source of blood
- A61B5/15003—Source of blood for venous or arterial blood
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150381—Design of piercing elements
- A61B5/150389—Hollow piercing elements, e.g. canulas, needles, for piercing the skin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150381—Design of piercing elements
- A61B5/150473—Double-ended needles, e.g. used with pre-evacuated sampling tubes
- A61B5/150488—Details of construction of shaft
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/153—Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
- A61B5/1535—Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes comprising means for indicating vein or arterial entry
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、フラッシュバック
針の視認性の改良に関する。より詳しくは、フラッシュ
バック機能を備えたプレフィルドシリンジ用両頭針の視
認性の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improving the visibility of a flashback needle. More specifically, the present invention relates to improvement of visibility of a double-ended needle for a prefilled syringe having a flashback function.
【０００２】[0002]
【従来の技術】薬液が予め充填された注射器、所謂プレ
フィルドシリンジを用いて人体に薬液を投与する場合、
従来、両頭針が用いられている。プレフィルドシリンジ
の口部はゴム栓で閉鎖されており、両頭針のプレフィル
ドシリンジへの取り付けは、口部のゴム栓に両頭針のバ
ック針（基端側の針）を刺通することにより行われる。
放射性同位元素を含んだ放射性医薬は、従来、一部鉛ガ
ラスの付いた鉛製の遮蔽体を用いて投与されるが、放射
性医薬は通常プレフィルドシリンジに充填されており、
投与に際しては両頭針が使用されている。2. Description of the Related Art When a drug solution is administered to the human body using a syringe pre-filled with the drug solution, a so-called prefilled syringe,
Conventionally, double-ended needles have been used. The mouth of the prefilled syringe is closed with a rubber stopper, and the double-ended needle is attached to the prefilled syringe by piercing the back needle (proximal needle) of the double-ended needle into the rubber stopper at the mouth. .
Radiopharmaceuticals containing radioisotopes are conventionally administered using a lead shield partially with lead glass, but radiopharmaceuticals are usually filled in prefilled syringes,
A double-ended needle is used for administration.
【０００３】しかしながら、従来の両頭針では、プレフ
ィルドシリンジの放射性医薬を血管投与する場合、遮蔽
体の鉛ガラス越しに血液の確認を行っており、鉛ガラス
自身着色しており、遮蔽体の内部が暗いため、非常に見
難いというのが現状である。従って、血管確保に時間が
かかり、そのため施術者の無用の被爆が増えることにな
る。また、欠陥確保の確認をしないで、医師や看護婦の
勘に頼るやり方では、投与に失敗したときに、患者に無
用な被爆を強いることになるので問題である。[0003] However, in the conventional double-ended needle, when a radiopharmaceutical of a prefilled syringe is administered to a blood vessel, blood is confirmed through the lead glass of the shield, and the lead glass itself is colored, and the inside of the shield is invisible. At present, it is very difficult to see because it is dark. Therefore, it takes time to secure blood vessels, which increases the unnecessary exposure of the practitioner. Also, a method that relies on the intuition of a doctor or a nurse without confirming the securing of a defect is problematic because when administration fails, the patient is unnecessarily exposed to radiation.
【０００４】そこで、このような血管の確保を可能にす
るものとして、第１流入針のハブに第２流入針を挿着
し、第１流入針のハブと第２流入針の保持部との間に血
液確認部を形成したものが提案されている（特開平４−
２１２３７６号公報）。しかしながら、このものは、２
つの流入針（基端にハブを備えた第１流入針と基端に保
持部を備えた第２流入針）を作成した後、第１流入針の
ハブに第２流入針の保持部を挿着してハブと保持部を接
着しているため、製造に手間がかかり、コスト的にも問
題のあるものであった。また、構造的にも血液確認部に
血液や薬液が残留するという欠点を有するものであっ
た。[0004] In order to secure such a blood vessel, a second inflow needle is inserted into the hub of the first inflow needle, and the hub of the first inflow needle and the holding portion of the second inflow needle are connected. One in which a blood confirmation part is formed between the two parts has been proposed (Japanese Unexamined Patent Publication No.
No. 212376). However, this one
After making two inflow needles (a first inflow needle having a hub at the base end and a second inflow needle having a holding portion at the base end), the holding portion of the second inflow needle is inserted into the hub of the first inflow needle. Since the hub and the holding portion are adhered to each other, it takes time and effort to manufacture, and there is a problem in cost. In addition, it has a drawback that the blood and the drug solution remain in the blood confirmation part in terms of structure.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、如上の事情
に鑑みてなされたもので、視認性がよく、製造が容易で
安価なフラッシュバック針を提供することを目的とす
る。また、本発明は、視認性がよく、実質的にハブに血
液や薬液が残留することのないフラッシュバック針を提
供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a flashback needle which has good visibility, is easy to manufacture, and is inexpensive. Another object of the present invention is to provide a flashback needle which has good visibility and substantially does not leave blood or drug solution on the hub.
【０００６】[0006]
【課題を解決するための手段】本発明者らは上記課題を
解決するために、鋭意検討の結果、血液を確認する部分
のハブに凸レンズ機能を持たせることにより上記課題を
解決できることに想到し、本発明を完成した。すなわち
本発明は、先端と基端に刃先を有し中間部に側孔が形成
されたカヌラと、先端と基端を有する透明なハブを含ん
でなり、このハブは、前記カヌラを液密に挿入可能な挿
着孔が形成された先端側の軸部と、この軸部と同心状か
つ軸部の中間部から基端方向へ軸部を超えて延びる基端
側の装着部を含み、この装着部の前記軸部の基端より先
端側の部分に凸レンズ部が形成されてなり、この凸レン
ズ部と同一横断面上の前記軸部に前記カヌラの側孔が位
置するようにされてなるフラッシュバック針に関する。
ここで、凸レンズ部は、外面が円形かつ内面が正多角形
の横断面形状に形成された装着部であってもよく、ま
た、内面が凸面状の縦断面形状に形成された装着部であ
ってもよい。ハブの軸部には先端側の刃面の向きを示す
刃面ポイントを設けるのが好ましい。また、先端側の刃
面と側孔と刃面ポイントが平面視で一直線上に並ぶよう
にするのが好ましい。Means for Solving the Problems In order to solve the above-mentioned problems, the present inventors have made intensive studies and have found that the above-mentioned problems can be solved by providing a hub for confirming blood with a convex lens function. Thus, the present invention has been completed. That is, the present invention includes a cannula having a cutting edge at a distal end and a proximal end and a side hole formed at an intermediate portion, and a transparent hub having a distal end and a proximal end, and the hub makes the cannula liquid-tight. A shaft portion on the distal end side in which an insertion hole capable of being inserted is formed, and a mounting portion on the base end side, which is concentric with the shaft portion and extends beyond the shaft portion in a proximal direction from an intermediate portion of the shaft portion, A flash in which a convex lens portion is formed at a portion of the mounting portion closer to the distal end than the base end of the shaft portion, and a side hole of the cannula is located at the shaft portion on the same cross section as the convex lens portion. Regarding the back needle.
Here, the convex lens portion may be a mounting portion in which the outer surface is formed in a circular cross section and the inner surface is formed in a regular polygonal cross section, or a mounting portion in which the inner surface is formed in a convex vertical cross sectional shape. You may. It is preferable that the shaft portion of the hub is provided with a blade surface point indicating the direction of the blade surface on the distal end side. In addition, it is preferable that the blade surface, the side hole, and the blade surface point on the tip side are aligned on a straight line in a plan view.
【０００７】[0007]
【発明の実施の形態】本発明の実施例を図面に基づいて
説明する。図１は本発明の実施例を示す縦断面図であり
（カヌラ部分は断面表示をしていない）、図２は図１に
示すフラッシュバック針のＸ−Ｘ線断面図、図３は本発
明の他の実施例を示す縦断面図である（カヌラ部分は断
面表示をしていない）。図１〜図３に示すように、本発
明のフラッシュバック針は、両端に刃先１１、１２を有
し中間部に側孔１３が形成されたカヌラ１と、透明なハ
ブ２を含んでなる。ハブ２はカヌラ挿着孔２１１が形成
された軸部２１と、この軸部２１と同心状に設けられた
基端側の装着部２２を含んでおり、この装着部２２には
凸レンズ部２２１が形成されている。カヌラ１の側孔１
３はこの凸レンズ部２２１と同一横断面上に位置してい
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention (canula portion is not shown in section), FIG. 2 is a sectional view taken along line XX of the flashback needle shown in FIG. 1, and FIG. It is a longitudinal cross-sectional view which shows the other Example (cannula part is not carrying out cross-section display). As shown in FIGS. 1 to 3, the flashback needle of the present invention includes a cannula 1 having cutting edges 11 and 12 at both ends and a side hole 13 formed at an intermediate portion, and a transparent hub 2. The hub 2 includes a shaft portion 21 in which a cannula insertion hole 211 is formed, and a base-side mounting portion 22 provided concentrically with the shaft portion 21. The mounting portion 22 includes a convex lens portion 221. Is formed. Side hole 1 of canula 1
Reference numeral 3 is located on the same cross section as the convex lens portion 221.
【０００８】カヌラ１はＳＵＳ３０４などのステンレス
鋼で形成されたパイプ状部材であり、先端と基端に刃先
１１、１２を有し、その中間部には側孔１３が形成され
ている。一方、ハブ２は先端と基端を有するキャップ状
部材であり、透明な合成樹脂、例えば、ポリプロピレン
やポリエチレン、ポリカーボネートなどで形成される。
ハブ２は、先端側の軸部２１と、この軸部２１と同心状
かつ軸部２１の中間部から基端方向へ軸部２１を超えて
延びる基端側の装着部２２からなっている。軸部２１に
はその軸心にカヌラ１を液密に挿入可能な挿着孔２１１
が形成されており、この挿着孔２１１にはカヌラ１が液
密に挿着されている。軸部２１の先端側には接着剤注入
部２１２が設けられており、カヌラ１と軸部２１はここ
に注入された接着剤３により固定されている。装着部２
２はフラッシュバック針をプレフィルドシリンジ（図示
していない）の口部に装着する部分であり、軸部２１の
基端より先端側の装着部部分には凸レンズ部が形成され
ている。挿着孔に挿着されたカヌラ１の側孔１３はこの
凸レンズ部と同一横断面上に位置している。ここで、凸
レンズ部は、図２に示すような、外面が円形かつ内面が
正多角形の横断面形状に形成された装着部部分２２１で
あってもよく、また、図３に示すような、内面が凸面状
の縦断面形状に形成された装着部部分２２２であっても
よい。The cannula 1 is a pipe-shaped member made of stainless steel such as SUS304, and has cutting edges 11 and 12 at the tip and the base, and a side hole 13 is formed at an intermediate portion. On the other hand, the hub 2 is a cap-shaped member having a distal end and a proximal end, and is formed of a transparent synthetic resin, for example, polypropylene, polyethylene, polycarbonate, or the like.
The hub 2 includes a shaft portion 21 on the distal end side, and a mounting portion 22 on the base end side which is concentric with the shaft portion 21 and extends beyond the shaft portion 21 in a base end direction from an intermediate portion of the shaft portion 21. The shaft portion 21 has an insertion hole 211 into which the cannula 1 can be inserted in a liquid-tight manner.
The cannula 1 is inserted into the insertion hole 211 in a liquid-tight manner. An adhesive injection part 212 is provided on the tip side of the shaft part 21, and the cannula 1 and the shaft part 21 are fixed by the adhesive 3 injected here. Mounting part 2
Reference numeral 2 denotes a portion for attaching a flashback needle to a mouth of a prefilled syringe (not shown). A convex lens portion is formed at a portion on the distal end side of the shaft portion 21 from the base end. The side hole 13 of the cannula 1 inserted into the insertion hole is located on the same cross section as the convex lens portion. Here, the convex lens portion may be a mounting portion portion 221 having a circular outer surface and a regular polygonal cross section as shown in FIG. 2, or as shown in FIG. 3. The mounting portion 222 may have an inner surface formed in a convex vertical sectional shape.
【０００９】フラッシュバック針の血管への刺入に際し
ては、刺入操作を容易にするため、通常刃面を上にして
行うが、刃面の向きを確認しやすいように、図示してい
ないが、ハブ２の軸部２１には先端側刃先１１の刃面の
向きを示すための点や矢印、▲などの刃面ポイントを設
けるのが好ましい。また、フラッシュバック針が血管に
刺入されたことの確認を容易にするために、先端側刃先
２１の刃面と側孔１３と刃面ポイントが平面視で一直線
上に並ぶようにするのが好ましい（図1では刃面と側孔
１３とが平面視で一直線上になっている）。これによ
り、フラッシュバック針の刺入操作とフラッシュバック
の確認を略同時に行うことが出来る。When the flashback needle is inserted into a blood vessel, the operation is usually performed with the blade surface facing upward in order to facilitate the insertion operation. However, although not shown, it is easy to confirm the orientation of the blade surface. It is preferable that the shaft portion 21 of the hub 2 is provided with a point for indicating the direction of the blade surface of the tip-side blade edge 11, or a blade surface point such as an arrow or a triangle. In addition, in order to easily confirm that the flashback needle has been inserted into the blood vessel, it is preferable that the blade surface of the tip side edge 21, the side hole 13, and the blade surface point be aligned in a plan view. It is preferable (in FIG. 1, the blade surface and the side hole 13 are aligned on a straight line in plan view). Thus, the operation of inserting the flashback needle and the confirmation of the flashback can be performed substantially simultaneously.
【００１０】[0010]
【発明の効果】以上述べたことから明らかなように、本
発明によれば、以下のような効果が期待できる。部品点
数が少なくて済むので、製造が容易であり、製造コスト
も少ない。また、軸部の挿着孔２１１にカヌラが液密に
挿着されており、装着部２２に形成された凸レンズ部に
よりカヌラ１の側孔１３が拡大されるようになっている
ので、視認性がよく、実質的にハブに血液や薬液が残留
することがない。As is apparent from the above description, according to the present invention, the following effects can be expected. Since the number of parts is small, the production is easy and the production cost is low. In addition, the cannula is inserted in the insertion hole 211 of the shaft portion in a liquid-tight manner, and the side lens 13 of the cannula 1 is enlarged by the convex lens portion formed in the mounting portion 22, so that visibility is improved. The blood and the drug solution do not substantially remain in the hub.
【図１】本発明の実施例を示す縦断面図である（カヌラ
部分は断面表示をしていない）。FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention (a sectional view of a cannula portion is not shown).
【図２】図１に示すフラッシュバック針のＸ−Ｘ線断面
図である。FIG. 2 is a sectional view taken along line XX of the flashback needle shown in FIG.
【図３】本発明の他の実施例を示す縦断面図である（カ
ヌラ部分は断面表示をしていない）。FIG. 3 is a longitudinal sectional view showing another embodiment of the present invention (canula portion is not shown in section).
１ カヌラ １１、１２ 刃先 １３ 側孔 ２ ハブ ２１ 軸部 ２１１ 挿着孔 ２１２ 接着剤注入部 ２２ 装着部 ２２１、２２２ 凸レンズ部 ３ 接着剤 DESCRIPTION OF SYMBOLS 1 Canula 11, 12 Blade tip 13 Side hole 2 Hub 21 Shaft part 211 Insertion hole 212 Adhesive injection part 22 Mounting part 221, 222 Convex lens part 3 Adhesive
Claims (5)
形成されたカヌラと、先端と基端を有する透明なハブを
含んでなり、該ハブは、前記カヌラを液密に挿入可能な
挿着孔が形成された先端側の軸部と、該軸部と同心状か
つ軸部の中間部から基端方向へ軸部を超えて延びる基端
側の装着部を含み、該装着部の前記軸部の基端より先端
側の部分に凸レンズ部が形成されてなり、該凸レンズ部
と同一横断面上の前記軸部に前記カヌラの側孔が位置す
るようにされてなるフラッシュバック針。1. A cannula having a cutting edge at a distal end and a proximal end and a side hole formed at an intermediate portion, and a transparent hub having a distal end and a proximal end, wherein the hub makes the cannula liquid-tight. A shaft portion on the distal end side in which an insertion hole capable of being inserted is formed, and a mounting portion on the base end side, which is concentric with the shaft portion and extends beyond the shaft portion in a proximal direction from an intermediate portion of the shaft portion, A flash in which a convex lens portion is formed at a portion of the mounting portion closer to the distal end than the base end of the shaft portion, and the side hole of the cannula is located at the shaft portion on the same cross section as the convex lens portion. Back needle.
多角形の横断面形状に形成された装着部部分である請求
項１に記載のフラッシュバック針。2. The flashback needle according to claim 1, wherein the convex lens portion is a mounting portion having a circular outer surface and a regular polygonal cross section.
状に形成された装着部部分である請求項１に記載のフラ
ッシュバック針。3. The flashback needle according to claim 1, wherein the convex lens portion is a mounting portion having an inner surface formed in a vertical cross section having a convex shape.
刃面ポイントを設けた請求項１〜３のいずれかに記載の
フラッシュバック針。4. The flashback needle according to claim 1, wherein a blade surface point indicating the direction of the blade surface on the distal end side is provided on the shaft portion of the hub.
面視で一直線上に並ぶようにされてなる請求項４に記載
のフラッシュバック針。5. The flashback needle according to claim 4, wherein the blade surface, the side hole and the blade surface point on the tip side are arranged in a straight line in plan view.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001049722A JP3728749B2 (en) | 2001-02-26 | 2001-02-26 | Flashback needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001049722A JP3728749B2 (en) | 2001-02-26 | 2001-02-26 | Flashback needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002248170A true JP2002248170A (en) | 2002-09-03 |
| JP3728749B2 JP3728749B2 (en) | 2005-12-21 |
Family
ID=18910784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001049722A Expired - Lifetime JP3728749B2 (en) | 2001-02-26 | 2001-02-26 | Flashback needle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3728749B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011047413A1 (en) | 2009-10-22 | 2011-04-28 | Medigard Limited | Blood flash needle |
| JP6133464B1 (en) * | 2016-03-25 | 2017-05-24 | 株式会社 華光 | Otolaryngology needle, intratympanic drug injection needle |
-
2001
- 2001-02-26 JP JP2001049722A patent/JP3728749B2/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011047413A1 (en) | 2009-10-22 | 2011-04-28 | Medigard Limited | Blood flash needle |
| EP2490592A1 (en) * | 2009-10-22 | 2012-08-29 | Medigard Limited | Blood flash needle |
| CN102665550A (en) * | 2009-10-22 | 2012-09-12 | 医疗卫士有限公司 | Blood flash needle |
| EP2490592A4 (en) * | 2009-10-22 | 2013-05-01 | Medigard Ltd | Blood flash needle |
| US9615782B2 (en) | 2009-10-22 | 2017-04-11 | Medigard Limited | Blood flash needle |
| JP6133464B1 (en) * | 2016-03-25 | 2017-05-24 | 株式会社 華光 | Otolaryngology needle, intratympanic drug injection needle |
| JP2017169995A (en) * | 2016-03-25 | 2017-09-28 | 株式会社 華光 | Otological injection needle and injection needle for injecting pharmaceutical in tympanic cavity |
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