JP2011078620A - Fixture for syringe - Google Patents

Fixture for syringe Download PDF

Info

Publication number
JP2011078620A
JP2011078620A JP2009234160A JP2009234160A JP2011078620A JP 2011078620 A JP2011078620 A JP 2011078620A JP 2009234160 A JP2009234160 A JP 2009234160A JP 2009234160 A JP2009234160 A JP 2009234160A JP 2011078620 A JP2011078620 A JP 2011078620A
Authority
JP
Japan
Prior art keywords
plunger
fixture
syringe
finger
syringe barrel
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
Application number
JP2009234160A
Other languages
Japanese (ja)
Other versions
JP2011078620A5 (en
Inventor
Kazuhiko Shoji
和彦 庄司
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HILLSIDE LAB KK
Original Assignee
HILLSIDE LAB KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by HILLSIDE LAB KK filed Critical HILLSIDE LAB KK
Priority to JP2009234160A priority Critical patent/JP2011078620A/en
Publication of JP2011078620A publication Critical patent/JP2011078620A/en
Publication of JP2011078620A5 publication Critical patent/JP2011078620A5/ja
Pending legal-status Critical Current

Links

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fixture for a syringe, maintaining an optimum suctioning pressure when sucking cells in the syringe for sampling cells. <P>SOLUTION: The fixture 1 is mounted on the syringe comprising an outer cylinder 20 provided with a flange 23 and a plunger provided with a plunger rod 32 and a finger abutting part 33 and fixes the plunger at a predetermined withdrawn position, and the fixture 1 includes a fixture body to be mounted on the syringe by inserting a part of it into a gap between the plunger rod and the outer cylinder 20 and a locking part 4 provided on the fixture body for locking the finger abutting part 33 when the plunger is withdrawn to the predetermined withdrawn position. Thus, the plunger of the syringe is fixed at the predetermined withdrawn position, and the suctioning pressure optimum for cell suctioning is maintained. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、注射器においてプランジャーを所定の吸引状態で固定する注射器用固定具に関する。   The present invention relates to a syringe fixture for fixing a plunger in a predetermined suction state in a syringe.

医療の臨床現場では、癌細胞の有無などを調べるために病変部から細胞を採取し、顕微鏡で観察して病理学的診断を行う細胞診がよく用いられる。   In medical clinical practice, cytodiagnosis is often used in which cells are collected from a lesion and examined under a microscope to examine the presence or absence of cancer cells.

穿刺吸引法は病変部からの細胞の採取方法の一つであり、注射器の針を病変部に穿刺し、針先に吸引圧を掛けることで病変部の細胞を注射筒内に採取するという方法である。具体的には、注射筒に注射針を装着し、針を病変部に穿刺して所定の吸引圧が得られるまで注射器のプランジャーを引く。該吸引圧を保持しながら針先に回転、往復運動を加える。このような針先の運動により病変組織から細胞が分離される。分離された細胞は針先にかかる吸引圧によって注射筒内に吸引され、採取される。   The puncture aspiration method is one of the methods for collecting cells from the lesion, and the method is to puncture the lesion with a syringe needle and apply suction pressure to the needle tip to collect the cells in the lesion into the syringe. It is. Specifically, an injection needle is attached to the syringe barrel, and the plunger of the syringe is pulled until a predetermined suction pressure is obtained by puncturing the lesion with the needle. While holding the suction pressure, the needle tip is rotated and reciprocated. Such movement of the needle tip separates the cells from the diseased tissue. The separated cells are sucked into the syringe barrel and collected by the suction pressure applied to the needle tip.

穿刺吸引による細胞採取は、細胞採取用注射器を市販の専用ピストル10(図1参照)に装着して行われることがある。専用ピストル10は注射筒の外筒フランジ固定部11、ホルダー12、及び引き金13を有し、該引き金13には注射筒プランジャーの端部を固定するプランジャー固定部14が備えられている。注射器の外筒フランジをフランジ固定部11に、プランジャーの端部をプランジャー固定部14にそれぞれ固定する。施術者は注射器の装着された専用ピストル10のホルダー12を保持し、病変部に注射針を刺して指で引き金13を引く。引き金13には注射筒のプランジャーが固定されているため、引き金13とともにプランジャーが引かれる。注射針の先端は組織内にあるため、所定の位置まで引き金13を引くと所定の吸引圧を針先にかけることができる。
このような専用ピストルは、特に10ccや20ccといった比較的大型の注射器を用いる場合にも施術者がプランジャーの引き出しを片手で安定して行えるという利点を有する。
Cell collection by puncture suction may be performed by attaching a cell collection syringe to a commercially available dedicated pistol 10 (see FIG. 1). The dedicated pistol 10 has an outer cylinder flange fixing portion 11 of a syringe barrel, a holder 12 and a trigger 13, and the trigger 13 is provided with a plunger fixing portion 14 for fixing an end portion of the syringe barrel plunger. The outer cylinder flange of the syringe is fixed to the flange fixing portion 11 and the end of the plunger is fixed to the plunger fixing portion 14. The practitioner holds the holder 12 of the dedicated pistol 10 to which the syringe is attached, and inserts the needle into the lesion and pulls the trigger 13 with the finger. Since the plunger of the syringe barrel is fixed to the trigger 13, the plunger is pulled together with the trigger 13. Since the tip of the injection needle is in the tissue, when the trigger 13 is pulled to a predetermined position, a predetermined suction pressure can be applied to the needle tip.
Such a dedicated pistol has an advantage that the operator can stably pull out the plunger with one hand even when using a relatively large syringe such as 10 cc or 20 cc.

[平成21年10月6日検索]、インターネット〈URL:http://www.ne.jp/asahi/matsui/tm/3qn941.htm〉[Search October 6, 2009], Internet <URL: http://www.ne.jp/asahi/matsui/tm/3qn941.htm>

細胞を注射筒内に吸引するためには、針先の最適な吸引圧を保持しつつ、針先に回転、往復運動を加えなければならない。注射針の先端は組織内にあるため、施術者が注射筒のプランジャーを引き出すと、プランジャーには注射筒外筒内の元の位置に戻そうとする力(復元力)が作用する。従って、施術者はこの復元力に対抗してプランジャーを引き続けなければならない。即ち、上記の専用ピストル10を用いた場合にも、施術者は引き金13を一定の力で引き続けながら針先に回転、往復運動を加えなければならない。
さらに、病変部の細胞を注射筒内に吸引するためには、小さな病変部に正確に針先を差し入れて固定した上で、上記の操作を行う必要がある。専用ピストル10を用いると、引き金13やホルダー12に掛ける施術者の指と注射筒の針先の距離が離れるため、針先の位置の制御が非常に困難になる。
In order to suck the cells into the syringe barrel, the needle tip must be rotated and reciprocated while maintaining the optimum suction pressure of the needle tip. Since the tip of the injection needle is in the tissue, when the practitioner pulls out the plunger of the syringe barrel, a force (restoring force) is applied to the plunger to return it to the original position in the syringe barrel. Thus, the practitioner must continue to pull the plunger against this restoring force. That is, even when the above-described dedicated pistol 10 is used, the practitioner must apply rotation and reciprocation to the needle tip while continuing to pull the trigger 13 with a constant force.
Furthermore, in order to suck the cells in the lesioned part into the syringe barrel, it is necessary to insert the needle tip accurately into the small lesioned part and fix it, and then perform the above operation. When the dedicated pistol 10 is used, since the distance between the operator's finger hung on the trigger 13 or the holder 12 and the needle tip of the syringe barrel is increased, it becomes very difficult to control the position of the needle tip.

本発明は上記の問題点に鑑みてなされたものであり、細胞採取用の注射器において細胞吸引時に最適な吸引圧を維持し、針先の位置制御を容易に行うことのできる注射器用固定具を提供することを課題とする。   The present invention has been made in view of the above problems, and provides a syringe fixing tool that can maintain the optimum suction pressure during cell aspiration in a cell collection syringe and can easily control the position of the needle tip. The issue is to provide.

上記課題を解決するために成された本発明の第一の態様に係る固定具は、
フランジを有する外筒と、プランジャーロッド及び指当て部を有するプランジャーとから成る注射筒に装着し、前記プランジャーを所定の引き出し位置で固定する固定具であって、
その一部を前記プランジャーロッドと前記外筒との間隙に挿入することにより前記注射筒に装着される固定具本体と、
前記固定具本体に設けられ、前記プランジャーが所定の引き出し位置まで引き出されたときに前記指当て部を係止する係止部と、
を有することを特徴とする。
The fixture according to the first aspect of the present invention, which has been made to solve the above problems,
A fixing tool that is attached to a syringe barrel composed of an outer cylinder having a flange and a plunger having a plunger rod and a finger pad, and fixes the plunger at a predetermined drawing position,
A fixture main body to be attached to the syringe barrel by inserting a part thereof into the gap between the plunger rod and the outer barrel;
A locking portion that is provided on the fixture body and locks the finger rest when the plunger is pulled out to a predetermined pulling position;
It is characterized by having.

上記課題を解決するために成された本発明の第二の態様に係る固定具は、第一の態様に係る固定具において、
前記固定具本体は、前記係止部が形成された矩形板部と、前記プランジャーロッドと前記外筒との間隙に挿入される突出片とを備えることを特徴とする。
The fixture according to the second aspect of the present invention made to solve the above problems is the fixture according to the first aspect,
The fixture main body includes a rectangular plate portion on which the locking portion is formed, and a protruding piece inserted into a gap between the plunger rod and the outer cylinder.

上記課題を解決するために成された本発明の第三の態様に係る固定具は、第二の態様に係る固定具において、
前記プランジャーを初期位置から引き出し位置まで引き出す際に前記指当て部を前記係止部に案内する案内面をさらに備え、
前記指当て部を前記案内面に沿わせながら前記プランジャーを引き出し位置まで引き出すことにより前記指当て部が前記係止部に係止されるように構成されていることを特徴とする。
The fixture according to the third aspect of the present invention, which has been made to solve the above problems, is the fastener according to the second aspect,
A guide surface for guiding the finger rest portion to the locking portion when the plunger is pulled out from an initial position to a pull-out position;
The finger resting portion is configured to be locked to the locking portion by pulling the plunger to a pulling position while keeping the finger resting portion along the guide surface.

上記課題を解決するために成された本発明の第四の態様に係る固定具は、第一から第三の態様に係る固定具において、注射筒を振動させるための振動モータが、前記固定具本体に取り付けられていることを特徴とする。   The fixing device according to the fourth aspect of the present invention, which is made to solve the above-mentioned problems, is the fixing device according to the first to third aspects, wherein the vibration motor for vibrating the syringe barrel is the fixing device. It is attached to the main body.

本発明に係る固定具はプランジャーの指当て部を係止部に係止させることにより、注射器のプランジャーを所定の引き出し位置で固定することができるため、細胞吸引に最適な吸引圧を維持することができる。また、プランジャーを手で固定する必要がなくなるため、注射針先端の位置制御や細胞採取のために必要なその後の操作を容易に行うことができる。
このように、本発明に係る固定具を用いると細胞採取の為の一連の操作が容易になるため、従来ほど高度な採取技術が要求されない。
The fixing device according to the present invention can fix the plunger of the syringe at a predetermined pulling-out position by locking the finger pad portion of the plunger to the locking portion, so that the optimal suction pressure for cell suction is maintained. can do. Further, since it is not necessary to fix the plunger by hand, subsequent operations necessary for position control of the injection needle tip and cell collection can be easily performed.
As described above, when the fixture according to the present invention is used, a series of operations for cell collection is facilitated, and thus a highly advanced collection technique is not required.

注射筒をセットした従来技術に係る専用ピストルの断面図。Sectional drawing of the exclusive pistol which concerns on the prior art which set the syringe barrel. 本発明の実施例1に係る固定具の正面図。The front view of the fixing tool which concerns on Example 1 of this invention. (a)はプランジャーが注射筒に押し込まれた状態で本実施例1に係る固定具を装着した注射筒の断面図、(b)は同固定具によってプランジャーが固定された状態の注射筒の断面図。(A) is sectional drawing of the injection cylinder which mounted | wore with the fixing tool which concerns on the present Example 1 in the state by which the plunger was pushed in to the injection cylinder, (b) is the injection cylinder with the plunger fixed by the fixing tool. FIG. (a)は図3(a)の注射筒の斜視図、(b)は図3(b)の注射筒の斜視図。(A) is a perspective view of the syringe barrel of FIG. 3 (a), (b) is a perspective view of the syringe barrel of FIG. 3 (b). 注射筒吸引量と吸引圧との関係を示す相関グラフ。The correlation graph which shows the relationship between syringe barrel suction amount and suction pressure. 従来の専用ピストルと本発明の実施例1に係る固定具を用いた場合の穿刺細胞吸引の不適正率を示す表。The table | surface which shows the unsuitable rate of puncture cell attraction | suction at the time of using the fixing tool which concerns on the conventional exclusive pistol and Example 1 of this invention. 本発明の実施例2に係る固定具の斜視図。The perspective view of the fixing tool which concerns on Example 2 of this invention. (a)吸引圧のみをかけた場合、(b)針先を回転させつつ吸引圧を掛けた場合、(c)振動モータで針先に振動を加えつつ吸引圧を掛けた場合、(d)振動モータで針先に振動を加えつつ針先を回転させ吸引圧を掛けた場合において採取された細胞の顕微鏡写真。(a) When only suction pressure is applied, (b) When suction pressure is applied while rotating the needle tip, (c) When suction pressure is applied while applying vibration to the needle tip with a vibration motor, (d) A photomicrograph of cells collected when a suction pressure is applied by rotating the needle tip while applying vibration to the needle tip with a vibration motor. (a)は本実施例の変形例1に係る固定具の正面図、(b)は(a)の固定具によってプランジャーが固定された状態の注射筒の斜視図。(A) is a front view of the fixing tool which concerns on the modification 1 of a present Example, (b) is a perspective view of the syringe barrel in the state where the plunger was fixed by the fixing tool of (a). (a)は本実施例の変形例2に係る固定具の正面図、(b)は(a)の固定具によってプランジャーが固定された状態の注射筒の斜視図。(A) is a front view of the fixing tool which concerns on the modification 2 of a present Example, (b) is a perspective view of the syringe barrel in the state where the plunger was fixed by the fixing tool of (a).

本発明の実施例について図2〜8を用いて説明する。   An embodiment of the present invention will be described with reference to FIGS.

図2は実施例1の固定具1を示す。
固定具1の説明の前に、本実施例に係る固定具が装着される注射筒について説明をする。
本固定具を装着する注射筒は、外筒20とプランジャー30から成る(図3、4参照)市販のものである。
外筒20は中空の円筒状であり、先端には注射針(図示なし)を接続する接続部21を有し、基端には開口部22を有する。開口部22にはフランジ23が設けられている。
プランジャー30はガスケット31、プランジャーロッド32、及び指当て部33から成る。ガスケット31はプランジャーロッド32の先端に接続されており、外筒2内部に液密に、かつ外筒軸方向に摺動可能に収納されている。
プランジャーロッド32は軽量を保ちつつ強度を得るために十文字状の部材で構成されている。プランジャーロッド32の基底部には円形の指当て部33が連接されている。
FIG. 2 shows the fixture 1 of the first embodiment.
Prior to the description of the fixture 1, the syringe barrel to which the fixture according to this embodiment is attached will be described.
The syringe barrel to which this fixture is attached is a commercially available product comprising an outer tube 20 and a plunger 30 (see FIGS. 3 and 4).
The outer cylinder 20 has a hollow cylindrical shape, and has a connecting portion 21 for connecting an injection needle (not shown) at the distal end and an opening 22 at the proximal end. The opening 22 is provided with a flange 23.
The plunger 30 includes a gasket 31, a plunger rod 32, and a finger pad 33. The gasket 31 is connected to the tip of the plunger rod 32, and is housed inside the outer cylinder 2 in a liquid-tight manner and slidable in the outer cylinder axis direction.
The plunger rod 32 is composed of a cross-shaped member in order to obtain strength while maintaining light weight. A circular finger rest 33 is connected to the base of the plunger rod 32.

本発明に先立ち、本発明の発明者は穿刺吸引法による細胞採取に必要な吸引圧を得るための吸引量を調べる実験を行った。5ccの注射筒と10ccの注射筒を用い、吸引量と得られる吸引圧の関係を図5のグラフに示した。その結果、5ccの注射筒と10ccの注射筒を使用した場合で得られる吸引圧には殆ど差が認められず、得られる吸引圧に対して注射筒の大きさは殆ど影響がないことが分かった。また、これまでの臨床経験から穿刺吸引法による細胞採取に必要な吸引圧は0.85気圧程度であると考えられるため、5ccの注射筒で1cc吸引すれば充分な吸引圧が得られることが分かった。
これらの結果を基に、ここでは、5ccの注射筒を1cc吸引した状態で細胞採取する際に用いられる固定具を例に挙げて説明する。
Prior to the present invention, the inventor of the present invention conducted an experiment to examine the amount of suction for obtaining the suction pressure necessary for cell collection by the puncture suction method. The relationship between the amount of suction and the suction pressure obtained is shown in the graph of FIG. 5 using a 5 cc syringe and a 10 cc syringe. As a result, it was found that there was almost no difference in the suction pressure obtained when using a 5 cc syringe and a 10 cc syringe, and the size of the syringe had almost no effect on the suction pressure obtained. It was. In addition, it is considered from the clinical experience so far that the suction pressure necessary for cell collection by the puncture suction method is about 0.85 atm. Therefore, if 1 cc is sucked with a 5 cc syringe, sufficient suction pressure can be obtained. I understood.
Based on these results, here, a fixing tool used when collecting cells in a state where 1 cc of a 5 cc syringe is aspirated will be described as an example.

図2は本実施例にかかる固定具1の正面図である。固定具1は厚さ約1.5mmの薄いチタンのプレートであり、一辺約3cmの正方形の形状をとる本体2と、本体の一辺に延設された長方形の突出部3とから成る。突出部3の大きさは約0.8cm×約0.6cmである。本体2の正方形の内部には、約1.8cm×約0.3cmの長方形の係止孔4が、突出部3の設けられた辺5から約2cm離れた位置に形成されている。   FIG. 2 is a front view of the fixture 1 according to the present embodiment. The fixture 1 is a thin titanium plate having a thickness of about 1.5 mm, and includes a main body 2 having a square shape with a side of about 3 cm and a rectangular protrusion 3 extending on one side of the main body. The size of the protrusion 3 is about 0.8 cm × about 0.6 cm. Inside the square of the main body 2, a rectangular locking hole 4 of about 1.8 cm × about 0.3 cm is formed at a position about 2 cm away from the side 5 where the protrusion 3 is provided.

本実施例に係る固定具1を用いて注射器プランジャー30を所定の吸引状態で固定し、細胞を採取する方法を説明する。
注射筒の接続部21に注射針を接続し、プランジャー30が注射筒外筒20に完全に押し込まれた状態で本固定具1を装着する(図3(a)及び図4(a)参照)。具体的には、固定具1をプランジャーロッド32の軸方向に対して傾斜させ、十文字状の部材で構成されたプランジャーロッド32と外筒20の開口部22との間に生じる間隙に突出部3を挿入し、突出部3の設けられた辺5を外筒20のフランジ23に当接させる。このとき、指当て部33の端部は固定具1の表面に当接している。
A method for collecting cells by fixing the syringe plunger 30 in a predetermined suction state using the fixture 1 according to the present embodiment will be described.
The injection needle is connected to the connection portion 21 of the syringe barrel, and the fixing tool 1 is mounted in a state where the plunger 30 is completely pushed into the syringe barrel outer barrel 20 (see FIGS. 3A and 4A). ). Specifically, the fixture 1 is tilted with respect to the axial direction of the plunger rod 32 and protrudes into a gap formed between the plunger rod 32 formed of a cross-shaped member and the opening 22 of the outer cylinder 20. The part 3 is inserted, and the side 5 provided with the protruding part 3 is brought into contact with the flange 23 of the outer cylinder 20. At this time, the end of the finger pad 33 is in contact with the surface of the fixture 1.

施術者はこの状態を保持しつつ注射針を患者の患部に穿刺し、プランジャー30を徐々に引き出す。このとき、注射針は患者の患部組織内に穿刺されたままであるため、施術者はプランジャー30を外筒20内に戻そうとする復元力に対抗してプランジャー30を引き出さなくてはならない。
プランジャー30の引き出しは、注射筒のフランジ23と指当て部33を固定具1に当接させた状態のままで、指当て部33を固定具1上で滑らせるようにして行う。固定具1の表面が案内面となるため、プランジャーの引き出しがスムーズに行える。
プランジャー30を1cc分引き出すと、指当て部33の端部が固定具1の係止孔4に到達するため、固定具1をプランジャーロッド32の軸に平行にし、指当て部33の端部を係止孔4に嵌め込んで指当て部33を係止する(図3(b)及び図4(b)参照)。これにより、プランジャー30が復元力によって外筒20内部に戻されるのを防ぐことができる。
While maintaining this state, the practitioner punctures the affected area of the patient and gradually pulls out the plunger 30. At this time, since the injection needle remains punctured in the affected tissue of the patient, the practitioner must pull out the plunger 30 against the restoring force to return the plunger 30 into the outer cylinder 20. .
The plunger 30 is pulled out by sliding the finger pad 33 on the fixture 1 while keeping the flange 23 of the syringe barrel and the finger pad 33 in contact with the fixture 1. Since the surface of the fixture 1 serves as a guide surface, the plunger can be pulled out smoothly.
When the plunger 30 is pulled out by 1 cc, the end of the finger pad 33 reaches the locking hole 4 of the fixing tool 1, so that the fixing tool 1 is parallel to the axis of the plunger rod 32 and the end of the finger pad 33 is The part is fitted into the locking hole 4 to lock the finger pad 33 (see FIG. 3B and FIG. 4B). Thereby, it is possible to prevent the plunger 30 from being returned to the inside of the outer cylinder 20 by the restoring force.

このように、本実施例にかかる固定具1を装着することにより1cc引かれた状態でプランジャー30が固定される。従って、施術者は復元力に対抗してプランジャー30を引き続ける必要がなくなり、注射針の先端の位置制御や針先に回転、振動運動を加える操作を容易に行うことができる。
また、本発明に係る固定具1は、従来の専用ピストン10より遙かにコンパクトかつ軽量であるため、細胞採取のための一連の操作をより簡単に行うことができる。
Thus, the plunger 30 is fixed in the state pulled 1cc by mounting | wearing the fixing tool 1 concerning a present Example. Therefore, the practitioner does not need to keep pulling the plunger 30 against the restoring force, and can easily perform the position control of the tip of the injection needle and the operation of rotating or vibrating the needle tip.
Moreover, since the fixture 1 according to the present invention is much more compact and lighter than the conventional dedicated piston 10, a series of operations for cell collection can be performed more easily.

本実施例に係る固定具を5cc注射筒に装着した場合と、従来の専用ピストルを20cc注射筒に装着した場合の穿刺細胞吸引の不適正率を比較する実験を行った(図6参照)。
患者の甲状腺の病変部に注射針を穿刺して細胞を採取し、穿刺細胞吸引診を行った。細胞採取は、従来の専用ピストルを装着した20cc注射器と、本実施例1に係る固定具を装着した5cc注射器とを用い、それぞれ30例に対して実施した。採取された細胞から標本を作成し、顕微鏡下で観察を行って不適正率を算出した。ここで、不適正率とは、全標本数のうち、細胞診断医が判定に不適切と判断した標本数の占める割合をいう。なお、本実験では全例について同一の施術者が細胞採取を行っている。
従来の専用ピストルを20cc注射筒に装着して細胞採取を行った場合、全30例のうち不適正例は4例であり、不適正率は13.3%であった。それに対し、本実施例1に係る固定具を5cc注射筒に装着して細胞採取を行った場合、全30例のうち不適正例は1例のみであり、不適正率は3.3%であった。これらの結果から、20ccという比較的大きな注射器に専用ピストルを装着して行っていた従来の細胞採取方法に比べ、5ccという小型の注射器に本実施例に係る固定具を装着して行う細胞採取方法の方が不適正率が低く、本実施例に係る固定具が穿刺細胞吸引診により適した器具であることが判った。
An experiment was conducted to compare the inappropriate rate of puncture cell aspiration when the fixture according to this example was mounted on a 5 cc syringe and when the conventional dedicated pistol was mounted on a 20 cc syringe (see FIG. 6).
A needle was punctured into the lesion of the patient's thyroid gland to collect cells, and puncture cell aspiration examination was performed. Cell collection was performed on 30 cases each using a conventional 20 cc syringe equipped with a dedicated pistol and a 5 cc syringe equipped with the fixture according to Example 1. A sample was prepared from the collected cells and observed under a microscope to calculate the inappropriate rate. Here, the improper rate refers to the ratio of the total number of samples to the number of samples that the cytodiagnostic determines to be inappropriate. In this experiment, the same practitioner is collecting cells for all cases.
When a conventional dedicated pistol was attached to a 20 cc syringe to collect cells, 4 out of 30 cases were inappropriate, and the inappropriate rate was 13.3%. On the other hand, when cells were collected by attaching the fixture according to Example 1 to a 5 cc syringe, only one case was inappropriate among all 30 cases, and the inappropriate rate was 3.3%. there were. From these results, compared to the conventional cell collection method in which a dedicated pistol is attached to a relatively large syringe of 20 cc, the cell collection method to be performed by attaching the fixture according to the present embodiment to a small syringe of 5 cc. Thus, it was found that the improper rate was lower, and the fixture according to the present example was more suitable for puncture cell aspiration examination.

図7は本発明の第2の実施例に係る固定具40の正面図である。固定具40は、実施例1に係る固定具の本体部分に超小型振動モータ41が取り付られたものである。超小型振動モータとしては、例えば径12mm、13000rpm、DC3Vのものを用いることができる。   FIG. 7 is a front view of the fixture 40 according to the second embodiment of the present invention. The fixture 40 is obtained by attaching a micro vibration motor 41 to the main body portion of the fixture according to the first embodiment. As the ultra-small vibration motor, for example, a motor having a diameter of 12 mm, 13000 rpm, and DC 3 V can be used.

注射器の注射針を患部に穿刺し本実施例の固定具40で吸引状態を固定した後、上記振動モータ41を駆動させると、注射針に容易に振動を加えることができる。この針先の振動は組織からの細胞の分離を促進するため、さらに簡便に細胞を採取することができる。
また、振動モータ41を用いると、人間の手で振動を加える場合よりも細かい振動を針先に加えることができるため、病変部周辺の神経などの障害が生じる危険を抑えることができる。
When the vibration motor 41 is driven after the injection needle of the syringe is punctured into the affected area and the suction state is fixed by the fixture 40 of the present embodiment, vibration can be easily applied to the injection needle. Since the vibration of the needle tip promotes the separation of the cells from the tissue, the cells can be collected more easily.
In addition, when the vibration motor 41 is used, a finer vibration can be applied to the needle tip than when a vibration is applied by a human hand, so that the risk of occurrence of a disorder such as a nerve around the lesion can be suppressed.

本実施例に係る振動モータ41を用いた針先への振動付加が細胞採取に与える影響を確かめるため実験を行った。この実験では、本実施例にかかる固定具40を用いて各条件の下で細胞を採取し、標本を作製した。
細胞の採取は、手術で摘出した甲状腺癌組織を対象に行った。図8は、(a)モータを駆動させず、針先に吸引圧のみをかけた場合、(b)モータを駆動させず、針先を回転させながら吸引圧を掛けた場合、(c)モータを駆動させて針先に振動を加えつつ吸引圧を掛けた場合、(d)モータを駆動させて針先に振動を加えつつ、針先を回転させ吸引圧を掛けた場合にそれぞれ採取された細胞の標本写真である。図8上段の標本は採取された細胞を95%アルコール固定(パパニコロウ染色)したもの、下段の標本はギムザ染色後、乾燥固定したものである。
An experiment was conducted to confirm the effect of adding vibration to the needle tip using the vibration motor 41 according to this example on cell collection. In this experiment, cells were collected under various conditions using the fixture 40 according to this example, and a specimen was prepared.
Cells were collected from thyroid cancer tissue removed by surgery. FIG. 8 shows (a) when the motor is not driven and only the suction pressure is applied to the needle tip, (b) when the suction pressure is applied while rotating the needle tip without driving the motor, and (c) the motor. When the suction pressure is applied while applying vibration to the needle tip by driving the needle, and (d) the sample is taken when the suction pressure is applied by rotating the needle tip while applying vibration to the needle tip by driving the motor. It is a cell specimen photograph. The upper sample in FIG. 8 is obtained by fixing the collected cells with 95% alcohol (Papanicolaou staining), and the lower sample after Giemsa staining and drying and fixing.

図8によると、(d)の採取方法、つまり振動モータで針先に振動を加えつつ針先を回転させる採取方法で最も効率よく細胞が採取されていることが分かる。これは、振動モータによる振動が、穿刺吸引細胞採取に有効であることを示唆している。
もっとも、(b)の採取方法、つまり振動モータを駆動させずに針先を回転させる採取方法によっても充分な量の細胞が採取されているため、針先の回転運動も細胞採取のために充分有効であることが分かる。
According to FIG. 8, it can be seen that the cells are most efficiently collected by the collection method (d), that is, the collection method in which the needle tip is rotated while applying vibration to the needle tip with a vibration motor. This suggests that the vibration by the vibration motor is effective for collecting puncture aspiration cells.
However, since a sufficient amount of cells has been collected by the collection method (b), that is, the collection method of rotating the needle tip without driving the vibration motor, the rotational movement of the needle tip is sufficient for cell collection. It turns out that it is effective.

なお、本発明は上記の実施例に限定されるものではなく、発明の趣旨の範囲内で変更が許容される。
例えば、固定具1の本体2及び突出部3の形状は正方形、又は長方形である必要はなく、多角形であってもよい。また、固定具本体2を三角形状にし、その一部をプランジャーロッド32と外筒開口部22との間隙に挿入するように構成してもよい(変形例1、図9参照)。
固定具1の材質もチタンに限定されず、例えばアルミやステンレス等にすることもできる。さらに、固定具1は案内面を有していればプレート状である必要もない。
プランジャー30の指当て部33を係止する係止部は孔である必要はなく、本体の一部に凹部7を設け、指当て部33の一部を差し込んで係止する構造の固定具8にしてもよい(変形例2、図10参照)。この場合、細胞吸引後に注射筒から固定具8を取り外しやすいという利点がある。
本実施例に係る固定具1は市販の一般的な5cc注射器で1ccを吸引した状態を固定するために設計されているが、注射器のサイズや吸引量を変更し、それに合わせたサイズに変更することも当然可能である。
In addition, this invention is not limited to said Example, A change is accept | permitted within the range of the meaning of invention.
For example, the shapes of the main body 2 and the protruding portion 3 of the fixture 1 do not have to be square or rectangular, and may be polygonal. Further, the fixture main body 2 may be formed in a triangular shape, and a part of the fixture main body 2 may be inserted into the gap between the plunger rod 32 and the outer cylinder opening 22 (see Modification 1 and FIG. 9).
The material of the fixture 1 is not limited to titanium, and may be aluminum or stainless steel, for example. Furthermore, the fixture 1 need not be plate-shaped as long as it has a guide surface.
The locking portion that locks the finger contact portion 33 of the plunger 30 does not need to be a hole, and a fixing device having a structure in which a recess 7 is provided in a part of the main body and a portion of the finger contact portion 33 is inserted and locked. 8 may be used (see Modification 2 and FIG. 10). In this case, there is an advantage that it is easy to remove the fixture 8 from the syringe after cell aspiration.
The fixing device 1 according to the present embodiment is designed to fix a state in which 1 cc is sucked with a commercially available general 5 cc syringe. However, the size and the suction amount of the syringe are changed, and the size is changed accordingly. Of course it is also possible.

1…固定具
2…本体
3…突出部
4…係止孔
10…専用ピストル
11…フランジ固定部
12…ホルダー
13…引き金
14…プランジャー固定部
20…外筒
21…接続部
22…開口部
23…フランジ
30…プランジャー
31…ガスケット
32…プランジャーロッド
33…指当て部
41…振動モータ
DESCRIPTION OF SYMBOLS 1 ... Fixing tool 2 ... Main body 3 ... Projection part 4 ... Locking hole 10 ... Dedicated pistol 11 ... Flange fixing part 12 ... Holder 13 ... Trigger 14 ... Plunger fixing part 20 ... Outer cylinder 21 ... Connection part 22 ... Opening part 23 ... Flange 30 ... Plunger 31 ... Gasket 32 ... Plunger rod 33 ... Finger rest 41 ... Vibration motor

Claims (4)

フランジを有する外筒と、プランジャーロッド及び指当て部を有するプランジャーとから成る注射筒に装着し、前記プランジャーを所定の引き出し位置で固定する固定具であって、
その一部を前記プランジャーロッドと前記外筒との間隙に挿入することにより前記注射筒に装着される固定具本体と、
前記固定具本体に設けられ、前記プランジャーが所定の引き出し位置まで引き出されたときに前記指当て部を係止する係止部と、
を有することを特徴とする固定具。
A fixing tool that is attached to a syringe barrel composed of an outer cylinder having a flange and a plunger having a plunger rod and a finger pad, and fixes the plunger at a predetermined drawing position,
A fixture main body to be attached to the syringe barrel by inserting a part thereof into the gap between the plunger rod and the outer barrel;
A locking portion that is provided on the fixture body and locks the finger rest when the plunger is pulled out to a predetermined pulling position;
A fixing device comprising:
請求項1に記載の固定具において、
前記固定具本体は、前記係止部が形成された矩形板部と、前記プランジャーロッドと前記外筒との間隙に挿入される突出片とを備えることを特徴とする固定具。
The fixture according to claim 1,
The fixing tool main body includes a rectangular plate portion on which the locking portion is formed, and a protruding piece inserted into a gap between the plunger rod and the outer cylinder.
請求項2に記載の固定具において、
前記プランジャーを初期位置から引き出し位置まで引き出す際に前記指当て部を前記係止部に案内する案内面をさらに備え、
前記指当て部を前記案内面に沿わせながら前記プランジャーを引き出し位置まで引き出すことにより前記指当て部が前記係止部に係止されるように構成されていることを特徴とする固定具。
The fixture according to claim 2,
A guide surface for guiding the finger rest portion to the locking portion when the plunger is pulled out from an initial position to a pull-out position;
A fixture, wherein the finger resting portion is locked to the locking portion by pulling the plunger to a pulling position while keeping the finger resting portion along the guide surface.
請求項1〜3に記載の固定具において、注射筒を振動させるための振動モータが、前記固定具本体に取り付けられていることを特徴とする固定具。   The fixture according to any one of claims 1 to 3, wherein a vibration motor for vibrating the syringe barrel is attached to the fixture main body.
JP2009234160A 2009-10-08 2009-10-08 Fixture for syringe Pending JP2011078620A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009234160A JP2011078620A (en) 2009-10-08 2009-10-08 Fixture for syringe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009234160A JP2011078620A (en) 2009-10-08 2009-10-08 Fixture for syringe

Publications (2)

Publication Number Publication Date
JP2011078620A true JP2011078620A (en) 2011-04-21
JP2011078620A5 JP2011078620A5 (en) 2012-07-19

Family

ID=44073348

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009234160A Pending JP2011078620A (en) 2009-10-08 2009-10-08 Fixture for syringe

Country Status (1)

Country Link
JP (1) JP2011078620A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107875486A (en) * 2017-12-28 2018-04-06 山西阳光中天医疗器械有限公司 A kind of hand-held greasing device and its operating method
CN107982586A (en) * 2017-12-27 2018-05-04 西安市第医院 A kind of self-locking type vacuum suction syringe

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62284636A (en) * 1986-06-04 1987-12-10 岡本 新悟 Simple apuncture suction biopsy sampler
JPH11502728A (en) * 1995-04-13 1999-03-09 アドヴァンスド サイトメトリックス インコーポレイテッド Suction needle and method
JP2002095749A (en) * 2000-09-22 2002-04-02 Fuji Photo Optical Co Ltd Syringe device
JP2004016456A (en) * 2002-06-17 2004-01-22 Jms Co Ltd Safety syringe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62284636A (en) * 1986-06-04 1987-12-10 岡本 新悟 Simple apuncture suction biopsy sampler
JPH11502728A (en) * 1995-04-13 1999-03-09 アドヴァンスド サイトメトリックス インコーポレイテッド Suction needle and method
JP2002095749A (en) * 2000-09-22 2002-04-02 Fuji Photo Optical Co Ltd Syringe device
JP2004016456A (en) * 2002-06-17 2004-01-22 Jms Co Ltd Safety syringe

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107982586A (en) * 2017-12-27 2018-05-04 西安市第医院 A kind of self-locking type vacuum suction syringe
CN107982586B (en) * 2017-12-27 2024-01-09 西安市第一医院 Self-locking type negative pressure suction syringe
CN107875486A (en) * 2017-12-28 2018-04-06 山西阳光中天医疗器械有限公司 A kind of hand-held greasing device and its operating method
CN107875486B (en) * 2017-12-28 2023-11-24 山西阳光中天医疗器械有限公司 Handheld grease injector and operation method thereof

Similar Documents

Publication Publication Date Title
US8858463B2 (en) Biopsy device
US5241969A (en) Controlled and safe fine needle aspiration device
EP0186256B1 (en) Biopsy needle set
JP2005520617A (en) Biopsy needle
US8419687B2 (en) Device for shielding a sharp tip of a cannula and method of using the same
US9788819B2 (en) Introducer for biopsy device
JP2001187058A (en) Biopsy needle
US20150005662A1 (en) System and method for fine needle aspiration
US10363019B2 (en) Biopsy needle, biopsy needle assembly, and methods for biopsy
JP2017516527A5 (en)
JP2011078620A (en) Fixture for syringe
CN108095774B (en) Improved bone biopsy device
US10524833B2 (en) Device and methods for precise control of medical procedures
WO2014091502A1 (en) Devices and methods for biopsy
KR20180002307U (en) Syringe capable of collection/injection of biological tissues and liquid with one hand and syringe assisting tool therefor
KR20100024571A (en) Injector for fine-needle aspiration biopsy
KR20110118603A (en) Injector for fine-needle aspiration biopsy
WO2020259599A1 (en) Endoscopic ultrasound needle instrument and operating method therefor
JP2001120556A (en) Tissue picking tool for endoscope
GB2570117A (en) A syringe actuation member and single-handed aspiration device
US20150250929A1 (en) Bone marrow aspiration device
JP2001231749A (en) Operation device for tissue collector for endoscope
KR20120006364U (en) Injector for fine-needle aspiration biopsy
JP2013011751A (en) Cutter for observation and method for manufacturing cutter for observation

Legal Events

Date Code Title Description
A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20120604

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20120604

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20130628

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20130702

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20131105