JPH0666641U - Biopsy needle device - Google Patents
Biopsy needle deviceInfo
- Publication number
- JPH0666641U JPH0666641U JP1300093U JP1300093U JPH0666641U JP H0666641 U JPH0666641 U JP H0666641U JP 1300093 U JP1300093 U JP 1300093U JP 1300093 U JP1300093 U JP 1300093U JP H0666641 U JPH0666641 U JP H0666641U
- Authority
- JP
- Japan
- Prior art keywords
- outer cylinder
- needle
- luer
- lock ring
- biopsy needle
- 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
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
(57)【要約】
【目的】 従来の生検針装置は、大型の注射器と同様
に、外針の針基と外筒のルアロックとがその内側面に設
けられた雌ネジによって、螺着固定されている。しかし
ながら、臓器穿刺の施術の際に、生検針装置を回転させ
る必要の生じる場合があり、その場合に外針が受ける抵
抗により、ルアロックが解除される危険があった。本考
案は、このような危険性のない生検針装置を提供するこ
とを目的とする。
【構成】 外筒とその先端に取り付けられた外針と、該
外筒の内側を摺動する押子とその先端に取り付けられた
内針とからなり、該外筒のルア部と外針のハブ部とが螺
着し固定された生検針装置において、該ルア部とハブ部
には、それらが軸線廻りに回転せずに軸線方向に摺動可
能とする対応する溝及び／又は突起が形成され、該ルア
部の外側には円筒状のルアロック環が配置され、該ルア
ロック環は軸線方向に摺動せずに回転自在となるように
該外筒に対して軸着され、該ルアロック環の内側面には
前記ハブ部に螺着するための雌ネジが形成されているこ
とを特徴とする。
(57) [Summary] [Purpose] In the conventional biopsy needle device, the needle base of the outer needle and the luer lock of the outer cylinder are screwed and fixed by a female screw provided on the inner surface thereof, like a large-sized syringe. ing. However, there is a case where it is necessary to rotate the biopsy needle device during the operation of organ puncture, and there is a risk that the luer lock is released due to the resistance received by the outer needle in that case. An object of the present invention is to provide a biopsy needle device that does not have such a risk. [Structure] An outer cylinder, an outer needle attached to the tip of the outer cylinder, a pusher that slides inside the outer cylinder, and an inner needle attached to the tip of the outer cylinder. In a biopsy needle device in which a hub portion is screwed and fixed, the luer portion and the hub portion are provided with corresponding grooves and / or protrusions that allow them to slide in the axial direction without rotating around the axis line. A cylindrical lure lock ring is arranged outside the luer portion, and the lure lock ring is axially attached to the outer cylinder so as to be rotatable without sliding in the axial direction. A female screw for screwing the hub portion is formed on the inner side surface.
Description
【０００１】[0001]
本考案は組織サンプリング用の生検針装置、特に、内針を案内する外針の針基 を外筒のルアに対して確実にロックさせるための構造に関する。 The present invention relates to a biopsy needle device for tissue sampling, and more particularly to a structure for reliably locking a needle base of an outer needle that guides an inner needle with respect to a luer of an outer cylinder.
【０００２】[0002]
二重構造の針と注射筒との組合せからなる生検針装置は、特公昭５６−５２５ ７５号公報に記載されているように、従来から知られている。 A biopsy needle device including a combination of a double-structured needle and a syringe is conventionally known as described in Japanese Patent Publication No. 56-52575.
【０００３】[0003]
ところで、この従来の生検針装置は、大型の注射器と同様に、外針の針基と外 筒のルアロックとがその内側面に設けられた雌ネジによって、螺着固定されてい る。しかしながら、臓器穿刺の施術の際に、生検針装置を回転させる必要が生じ る場合があり、その場合に外針が受ける抵抗により、ルアロックが解除される危 険があった。 By the way, in this conventional biopsy needle device, the needle base of the outer needle and the luer lock of the outer cylinder are screwed and fixed by a female screw provided on the inner surface thereof, as in a large-sized syringe. However, it may be necessary to rotate the biopsy needle device during the operation of organ puncture, and there is a risk that the lure lock may be released due to the resistance received by the outer needle in that case.
【０００４】[0004]
本考案は、このような危険性のない生検針装置を提供することを目的とし、以 下のように構成したことを特徴とする。すなわち、外筒とその先端に取り付けら れた外針と、該外筒の内側を摺動する押子とその先端に取り付けられた内針とか らなり、該外筒のルア部と外針のハブ部とが螺着し固定された生検針装置におい て、該ルア部とハブ部には、それらが軸線廻りに回転せずに軸線方向に摺動可能 とする対応する溝及び／又は突起が形成され、該ルア部の外側には円筒状のルア ロック環が配置され、該ルアロック環は軸線方向に摺動せずに回転自在となるよ うに該外筒に対して軸着され、該ルアロック環の内側面には前記ハブ部に螺着す るための雌ネジが形成されていることを特徴とする。 The present invention aims to provide a biopsy needle device without such a risk, and is characterized by being configured as follows. That is, it consists of an outer cylinder and an outer needle attached to its tip, a pusher sliding inside the outer cylinder, and an inner needle attached to its tip. In a biopsy needle device in which the hub portion is screwed and fixed, the luer portion and the hub portion have corresponding grooves and / or protrusions that allow them to slide in the axial direction without rotating about the axis. A cylindrical lure lock ring is formed outside the luer portion, and the lure lock ring is axially attached to the outer cylinder so as to be rotatable without sliding in the axial direction. A female screw is formed on the inner side surface of the ring so as to be screwed to the hub portion.
【０００５】[0005]
【実施例】 図１に、押子および内針を省略て表した生検針装置の一実施例を示す。この実 施例において、生検針装置は、外筒２とその先端に取り付けられた外針３と、該 外筒の内側を摺動する押子（図示せず）と、その先端に取り付けられた内針（図 示せず）とからなり、該外筒のルア部２ａと外針のハブ部３ａとが螺着されるこ とによってそれらが固定ロックされる。すなわち、該ルア部には突条２ｂが、ま た、該ハブ部にはそれに係合する溝条（図示せず）が軸線方向にそれぞれ設けら れている。また、該ルア部の外側には円筒状のルアロック環２ｃが該ルア部２ａ に対して回転自在に、軸線方向に対しては摺動しないように軸着されている。そ して該ルアロック環の内側面には前記ハブ部に螺着するための雌ネジが形成され ている。この実施例に示す外筒は、シリンダー状の本体２ｄと、その先端に接着 固定されたルア部２ａと、それらの接着固定前にそれらの間のくびれた部分に遊 嵌するように装着されたルアロック環２ｃとの３部品から構成されている。しか しながら、ルアロック環を外筒のくびれた部分に回転自在に遊嵌させる構成はこ のようなものに限定されるものではない。すなわち、図２および図３に、他の実 施例を示し、図２の実施例では合成樹脂製のルアロック環の係合爪２ｅの弾性を 利用してくびれたルア部に後から嵌合させたものであり、図３の実施例にあって は、本体２ｄの先端に後から接着固定された押え部品２ｆによって、該ルアロッ ク環を脱落させずに遊嵌させている。EXAMPLE FIG. 1 shows an example of a biopsy needle device in which the pusher and the inner needle are omitted. In this embodiment, the biopsy needle device has an outer cylinder 2 and an outer needle 3 attached to the tip thereof, a pusher (not shown) sliding inside the outer cylinder, and a tip attached to the outer needle 3. It is composed of an inner needle (not shown), and the luer portion 2a of the outer cylinder and the hub portion 3a of the outer needle are screwed and fixedly locked. That is, the lure portion is provided with the protrusion 2b, and the hub portion is provided with the groove (not shown) engaging with the hub portion in the axial direction. A cylindrical lure lock ring 2c is rotatably mounted on the outer side of the luer portion so as to be rotatable with respect to the luer portion 2a and not to slide in the axial direction. A female screw for screwing the hub portion is formed on the inner surface of the luer lock ring. The outer cylinder shown in this embodiment was mounted so as to fit loosely between a cylindrical main body 2d, a luer portion 2a adhered and fixed to its tip, and a constricted portion between them before adhering and fixing them. It is composed of three parts including a lure lock ring 2c. However, the structure in which the luer lock ring is rotatably fitted in the constricted portion of the outer cylinder is not limited to this. That is, FIGS. 2 and 3 show another embodiment. In the embodiment of FIG. 2, the elasticity of the engaging claws 2e of the synthetic resin luer lock ring is used to fit the constricted lure part later. In the embodiment shown in FIG. 3, the luer lock ring is loosely fitted to the main body 2d by the pressing member 2f which is later adhesively fixed to the tip of the main body 2d without dropping.
【０００６】[0006]
該突条２ｂに溝条を係合させた状態で、ルアロック環２ｃを軸線廻りに回転さ せることによって、その雌ネジ部がハブ部３ａに螺着し、外針を後退させる。こ れによって、該外筒と外針がルアロック環２ｃを介して固定ロックされる。この 固定された状態においては、該突条と対応する溝条の作用で、該外筒２とその先 端に取り付けられた外針３の間では軸線廻りの相対的回転を生じることがない。 By rotating the luer lock ring 2c around the axis while the groove is engaged with the protrusion 2b, the female screw portion is screwed into the hub portion 3a, and the outer needle is retracted. As a result, the outer cylinder and the outer needle are fixedly locked via the luer lock ring 2c. In this fixed state, relative rotation around the axis does not occur between the outer cylinder 2 and the outer needle 3 attached to the front end thereof by the action of the groove corresponding to the protrusion.
【０００７】[0007]
本考案は以上のように構成されているから、施術の便宜上、生検針装置が軸線 廻りに回転されたとしても、外針が受ける抵抗は突条及び／又は溝条を介して外 筒に伝達され、ルアロック環を緩ませるような相対的回転を生じない。したがっ て、ルアロック環のみを意図的に回転させない限り、外筒と外針の結合が解除さ れる危険はない。 Since the present invention is configured as described above, for convenience of operation, even if the biopsy needle device is rotated around the axis, the resistance received by the outer needle is transmitted to the outer tube via the ridge and / or groove. Therefore, relative rotation that loosens the lure lock ring does not occur. Therefore, unless the lure lock ring is only intentionally rotated, there is no risk that the outer cylinder and outer needle will be disconnected.
【図面の簡単な説明】[Brief description of drawings]
【図１】 内筒および内針を省略した生検針装置の側断
面図FIG. 1 is a side sectional view of a biopsy needle device without an inner cylinder and an inner needle.
【図２】 ルアロック環の他の遊嵌構造を示す外筒の側
断面図FIG. 2 is a side sectional view of an outer cylinder showing another loose fitting structure of a luer lock ring.
【図３】 ルアロック環の他の遊嵌構造を示す外筒の側
断面図FIG. 3 is a side sectional view of an outer cylinder showing another loose fitting structure of a luer lock ring.
１・・・生検針装置 ２・・・外筒 ２ａ・・ルア部 ２ｂ・・突条 ２ｃ・・ルアロック環 ３・・・外針 ３ａ・・ハブ部 1 ... Biopsy needle device 2 ... Outer cylinder 2a ... Lure part 2b ... Ridge 2c ... Lure lock ring 3 ... Outer needle 3a ... Hub part
Claims (1)
と、該外筒の内側を摺動する押子とその先端に取り付け
られた内針とからなり、該外筒のルア部２ａと外針のハ
ブ部３ａとが螺着固定された生検針装置１において、 該ルア部とハブ部には、それらが軸線廻りに回転せずに
軸線方向に摺動可能とする対応する溝及び／又は突起２
ｂが形成され、 該ルア部の外側には円筒状のルアロック環２ｃが配置さ
れ、該ルアロック環は軸線方向に摺動せずに回転自在と
なるように該外筒に対して軸着され、該ルアロック環の
内側面には前記ハブ部に螺着するための雌ネジが形成さ
れていることを特徴とする生検針装置。1. An outer cylinder 2 and an outer needle 3 attached to the tip thereof.
And a pusher that slides inside the outer cylinder and an inner needle attached to the tip of the outer cylinder, and a luer portion 2a of the outer cylinder and a hub portion 3a of the outer needle are screwed and fixed to the biopsy needle device. 1, the luer portion and the hub portion have corresponding grooves and / or protrusions 2 that allow them to slide in the axial direction without rotating about the axis.
b is formed, and a cylindrical lure lock ring 2c is arranged outside the luer portion, and the lure lock ring is axially attached to the outer cylinder so as to be rotatable without sliding in the axial direction, A biopsy needle device, wherein a female screw for screwing the hub portion is formed on an inner surface of the luer lock ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1300093U JPH0666641U (en) | 1993-03-01 | 1993-03-01 | Biopsy needle device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1300093U JPH0666641U (en) | 1993-03-01 | 1993-03-01 | Biopsy needle device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0666641U true JPH0666641U (en) | 1994-09-20 |
Family
ID=11820928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1300093U Pending JPH0666641U (en) | 1993-03-01 | 1993-03-01 | Biopsy needle device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0666641U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006087763A1 (en) * | 2005-02-15 | 2006-08-24 | Kabushiki Kaisha Top | Connector |
-
1993
- 1993-03-01 JP JP1300093U patent/JPH0666641U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006087763A1 (en) * | 2005-02-15 | 2006-08-24 | Kabushiki Kaisha Top | Connector |
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