JPH08140980A - Biopsy device - Google Patents
Biopsy deviceInfo
- Publication number
- JPH08140980A JPH08140980A JP6314279A JP31427994A JPH08140980A JP H08140980 A JPH08140980 A JP H08140980A JP 6314279 A JP6314279 A JP 6314279A JP 31427994 A JP31427994 A JP 31427994A JP H08140980 A JPH08140980 A JP H08140980A
- Authority
- JP
- Japan
- Prior art keywords
- needle
- cylinder
- outer cylinder
- negative pressure
- biopsy
- 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
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- Surgical Instruments (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は組織サンプリングのため
に使用される生検装置、特に生検針発射手段と負圧手段
の双方を具えたものに関する。FIELD OF THE INVENTION This invention relates to biopsy devices used for tissue sampling, and more particularly to those having both biopsy needle firing means and negative pressure means.
【０００２】[0002]
【従来の技術】生検針をバネの力で発射する（急激に前
進させる）手段を具えた生検装置として、例えばＵＳＰ
−４９５８６２５号や特公平６−２８６６３号公報記載
のものが知られている。また、発射手段は持たないもの
の，検体採取性に優れた負圧手段を具えた生検装置とし
て例えば特公昭５６−５２５７５号公報記載のものが知
られている。さらに、負圧手段と発射手段との双方を具
えた使い捨てタイプの生検装置の考案も先願（実願平５
−３２３３１号）として存在する。2. Description of the Related Art A biopsy device having means for firing a biopsy needle with the force of a spring (advancing it abruptly) is disclosed in USP.
No. 4,958,625 and Japanese Patent Publication No. 6-28663 are known. Further, as a biopsy device having a negative pressure means excellent in sample collecting property, which does not have a firing means, for example, one described in Japanese Patent Publication No. 56-52575 is known. Furthermore, the invention of a disposable type biopsy device having both negative pressure means and firing means has been devised in the previous application (Actual application No. 5).
No. 32331).
【０００３】[0003]
【発明が解決しようとする課題】本発明は、このような
発射手段を具えた生検装置において、針先が前進する当
初から十分な負圧を付与することによって、従来製品に
較べて、検体採取性が極めて向上するという新規な知見
に基づき、外針の前進当初から、生検針を介してその針
先まで負圧手段による十分な負圧を伝達する構成とした
ことを特徴とする。また、そのような生検装置の負圧発
生部を着脱自在とすることにより、その他の部分からな
る発射機を繰り返し使用可能としたり、または、一度の
施術において負圧手段としての真空採取管を交換するこ
とによって複数の検体の採取を可能とするなど、経済性
にも優れた生検装置を提供することを目的とする。DISCLOSURE OF THE INVENTION The present invention provides a biopsy device equipped with such a firing means by applying a sufficient negative pressure from the beginning of the advance of the needle tip, so that the specimen can be compared with conventional products. It is characterized in that, based on the new finding that the collectability is remarkably improved, a sufficient negative pressure by the negative pressure means is transmitted from the beginning of the advance of the outer needle to the needle tip through the biopsy needle. In addition, by making the negative pressure generating portion of such a biopsy device detachable, it is possible to repeatedly use a launcher consisting of other parts, or to use a vacuum sampling tube as negative pressure means in one operation. It is an object of the present invention to provide a biopsy device which is excellent in economic efficiency such that a plurality of specimens can be collected by exchanging them.
【０００４】[0004]
【課題を解決するための手段】すなわち、内針と外針で
構成される生検針と、該内針に接続された内筒と、該外
針の針基に接続された外筒と、該内筒をその前進位置か
ら後退位置まで，また該外筒をその後退位置から前進位
置まで，それぞれ軸線方向に摺動自在に保持する筐体
と、該筐体に対して該内筒を後退方向に，該外筒を前進
方向にそれぞれ付勢するバネ手段と、該バネ手段に抗し
て該内筒と外筒とをそれぞれ付勢状態に駆動する手段
と、該付勢状態におけるそれらの係止を解除して，先に
該内筒を後退させ，次に該外筒を前進させる手段とを具
えた生検装置において、該内筒と外筒とが前記生検針を
介してその針先まで負圧を伝える負圧ポンプを構成し，
該外筒の前進前に該負圧ポンプによって初期負圧が発生
されていることを特徴とする。また、中空の内針と外針
で構成される生検針と、該内針に接続された内筒と、該
外針の針基に接続された外筒と、該生検針を介してその
針先まで負圧を伝える負圧手段と、該外筒を後退位置か
ら前進位置まで軸線方向に摺動自在に保持する筐体と、
該筐体に対して外筒を前進方向に付勢するバネ手段と、
該バネ手段に弾性エネルギーが蓄えられた後退位置で該
外筒を係止する手段と、その係止を解除して該バネ手段
の作用で該外筒を前進位置まで前進させる手段とを具え
た生検装置において、前記負圧手段が該内筒にその後方
開口から軸線方向に摺動可能に結合される真空採取管で
あって，該真空採取管のゴム栓と，それを貫通する内針
の後端針先に設けられた後端開孔とが，それらの位置関
係により，該内針の中空孔を介して該生検針の針先と該
真空採取管の内部とを連絡する開閉弁を構成することを
特徴とする。さらに、中空の内針と外針で構成される生
検針と、該内針に接続された内筒と、該外針の針基に接
続された外筒と、該生検針に連絡される負圧手段と、該
外筒を後退位置から前進位置まで軸線方向に摺動自在に
保持する筐体と、該筐体に対して外筒を前進方向に付勢
するバネ手段と、該バネ手段に弾性エネルギーが蓄えら
れた後退位置で該外筒を係止する手段と、その係止を解
除して該バネ手段の作用で該外筒を前進位置まで前進さ
せる手段とを具えた生検装置において、前記負圧手段が
該内筒にその後方開口から軸線方向に摺動可能に結合さ
れる真空採取管であって、該外筒に設けられたゴム部材
と，それを貫通する内針に設けられた止栓及びその前後
の中間開孔とが，該ゴム部材の中空部及びその前後の中
実部との位置関係により，該内針の中空孔を介して生検
針の針先と該真空採取管の内部とを連絡する開閉弁を構
成することを特徴とする。Means for Solving the Problems That is, a biopsy needle composed of an inner needle and an outer needle, an inner cylinder connected to the inner needle, an outer cylinder connected to a needle base of the outer needle, A casing that holds the inner cylinder slidably in the axial direction from the forward position to the backward position and the outer cylinder from the backward position to the forward position, and the inner cylinder in the backward direction with respect to the casing. A spring means for urging the outer cylinder in the forward direction, a means for driving the inner cylinder and the outer cylinder into urging states against the spring means, and a relationship between them in the urging state. In a biopsy device comprising means for releasing the stop, first retracting the inner cylinder, and then advancing the outer cylinder, the inner cylinder and the outer cylinder have their needle tips passed through the biopsy needle. A negative pressure pump that transmits negative pressure to
An initial negative pressure is generated by the negative pressure pump before the forward movement of the outer cylinder. Also, a biopsy needle composed of a hollow inner needle and an outer needle, an inner cylinder connected to the inner needle, an outer cylinder connected to the needle base of the outer needle, and the needle through the biopsy needle. Negative pressure means for transmitting a negative pressure up to the end, and a housing for holding the outer cylinder slidably in the axial direction from the retracted position to the advanced position,
Spring means for urging the outer cylinder in the forward direction with respect to the housing;
The spring means includes means for locking the outer cylinder at the retracted position where elastic energy is stored, and means for releasing the locking and advancing the outer cylinder to the forward position by the action of the spring means. In the biopsy device, the negative pressure means is a vacuum sampling tube that is axially slidably coupled to the inner cylinder from its rear opening, the rubber sampling tube having a rubber stopper and an inner needle penetrating the rubber stopper. An on-off valve that connects the needle tip of the biopsy needle and the inside of the vacuum sampling tube through the hollow hole of the inner needle, depending on their positional relationship, Is configured. Further, a biopsy needle composed of a hollow inner needle and an outer needle, an inner cylinder connected to the inner needle, an outer cylinder connected to the needle base of the outer needle, and a negative needle connected to the biopsy needle. A pressure means, a casing for holding the outer cylinder slidably in the axial direction from the backward position to the forward position, spring means for urging the outer cylinder in the forward direction with respect to the casing, and the spring means. A biopsy device comprising: means for locking the outer cylinder at a retracted position where elastic energy is stored; and means for releasing the locking and advancing the outer cylinder to an advanced position by the action of the spring means. A vacuum sampling tube in which the negative pressure means is slidably coupled to the inner cylinder from its rear opening in the axial direction, the rubber member provided on the outer cylinder and the inner needle penetrating the rubber member. Due to the positional relationship between the stopper plug and the intermediate openings in front of and behind it, the internal stopper is Characterized in that it constitutes a closing valve for communicating the interior of the needle tip of the biopsy needle through the hollow holes and the vacuum collection tube.
【０００５】[0005]
【作用】生検器または真空採取管が装着された生検装置
はバネの作用で発射され、その外針の先端は急激に前進
する。その際、外針の前進に先だって、該外針の先端
に、初期負圧または全負圧が伝達される。このような負
圧作用下において外針が前進すると、その針先に吸引さ
れた患部組織から検体が削り取られ、該検体は負圧で該
生検器または真空採取管内に収容される。また、施術中
に該真空採取管の交換を行うことが可能であり、また、
施術終了後に、該生検器または真空採取管が取り外され
て、それらは検査部門に送られ、空の生検装置（発射
機）には、新しい生検器が装着される。The biopsy device equipped with the biopsy device or the vacuum sampling tube is fired by the action of the spring, and the tip of the outer needle is rapidly advanced. At that time, prior to the forward movement of the outer needle, the initial negative pressure or the total negative pressure is transmitted to the tip of the outer needle. When the outer needle advances under such a negative pressure action, the specimen is scraped off from the affected tissue sucked by the needle tip, and the specimen is stored under negative pressure in the biopsy device or the vacuum sampling tube. Further, it is possible to replace the vacuum sampling tube during the treatment, and
At the end of the procedure, the biopsy device or vacuum sampling tube is removed, they are sent to the examination department, and the empty biopsy device (launcher) is fitted with a new biopsy device.
【０００６】[0006]
【実施例１】 （生検器の構成）実施例１として、負圧手段を含む生検
器と、それを着脱自在に載置する発射機とからなる生検
装置の実施例を示す。図１ないし３において、１は、例
えば特公昭５６−５２５７５号公報に開示された生検器
と略同様な生検器を示し、該生検器は、内針３を先端に
具えたピストン２と、中空針管からなる外針５を先端に
具えたシリンダー４とから構成され、これらは組み合わ
されて検体採取のための二重構造の生検針を具えた負圧
ポンプを構成している。本実施例においては、該生検針
の発射は２段階に行われる。すなわち、図１の休止状態
から、まずピストン２が少し後退されて図２の状態とな
り、これによって初期負圧が負圧ポンプ内に発生され、
次に図３に示すようにシリンダー４と共に外針５が前進
される。First Embodiment (Structure of Biopsy Device) As a first embodiment, an embodiment of a biopsy device including a biopsy device including negative pressure means and an ejector on which the biopsy device is detachably mounted will be shown. 1 to 3, reference numeral 1 denotes a biopsy device substantially similar to, for example, the biopsy device disclosed in Japanese Patent Publication No. 56-52575, which is a piston 2 having an inner needle 3 at its tip. And a cylinder 4 having an outer needle 5 composed of a hollow needle tube at its tip, which are combined to form a negative pressure pump having a dual structure biopsy needle for sample collection. In this embodiment, the biopsy needle is fired in two stages. That is, from the rest state of FIG. 1, first, the piston 2 is slightly retracted to the state of FIG. 2, whereby an initial negative pressure is generated in the negative pressure pump,
Next, as shown in FIG. 3, the outer needle 5 is advanced together with the cylinder 4.
【０００７】（発射機の構成）図４ないし１０におい
て、６はこのような生検器を着脱可能に載置する発射機
で、該発射機は前記生検器１のピストン２と係合するピ
ストンホルダー７と，前記シリンダー４と係合するシリ
ンダーホルダー８とを具えており、それらは発射機筐体
９の内側に前後方向に延在する２本の平行な案内軸１０
に案内され、該案内軸に沿って前後方向に所定距離摺動
する。１１は該ピストンホルダーとシリンダーホルダー
の間で作用するように、同じくそれぞれの案内軸に装着
されたそれぞれの圧縮コイルバネで、対応する該ピスト
ンホルダーとシリンダーホルダーとを互いに遠のく方向
に付勢する。なお、本実施例において、該ピストンホル
ダーとシリンダーホルダーとを付勢するバネ手段はこの
ようなもののみに限定されるものではなく、例えば、該
２本の案内軸に装着された左右各１本の圧縮コイルバネ
の用途を分けて、一方を該筐体に対してピストンホルダ
ーが後退する方向に付勢するものと、他方を該筐体に対
してシリンダーホルダーが前進する方向に付勢させるも
のとして別々に用いることもできる。１２は該発射機筐
体に枢着された逆Ｔ字状のピストン係止爪で、図示しな
いコイルバネの作用で時計（矢印）方向の回動習性が付
与され、前記圧縮コイルバネ１１に抗して前進位置にあ
る該ピストンホルダーの後端を係止し、その後退を阻止
する（図４）。１３は同じく該発射機筐体に枢着された
シリンダー係止爪で、同じく図示しない捻りコイルバネ
の作用で反時計（矢印）方向の回動習性が付与され、前
記圧縮コイルバネ１１に抗して後退位置にある該シリン
ダーホルダー８の後端部を係止し、その前進を阻止する
（図４）。また、該シリンダー係止爪はピストンホルダ
ー７の斜面とも当接しており、該シリンダー係止爪によ
るシリンダーホルダーの係止状態は前記ピストンホルダ
ー７の後退運動によって解除される（図５，６）。(Structure of Launcher) In FIGS. 4 to 10, 6 is a launcher on which such a biopsy device is detachably mounted, and the launcher engages with the piston 2 of the biopsy device 1. It comprises a piston holder 7 and a cylinder holder 8 which engages with said cylinder 4, which comprises two parallel guide shafts 10 extending in the front-back direction inside the launcher housing 9.
And is slid along the guide shaft in the front-rear direction by a predetermined distance. Reference numeral 11 denotes respective compression coil springs, which are also mounted on the respective guide shafts, so as to act between the piston holder and the cylinder holder, and bias the corresponding piston holder and cylinder holder away from each other. In the present embodiment, the spring means for urging the piston holder and the cylinder holder are not limited to such ones. For example, one left and one right side mounted on the two guide shafts, for example. The application of the compression coil spring is divided so that one is urged in the direction in which the piston holder retracts with respect to the casing, and the other is urged in the direction in which the cylinder holder is advanced with respect to the casing. It can also be used separately. Reference numeral 12 denotes an inverted T-shaped piston locking pawl pivotally attached to the casing of the launcher, and a habit of turning in the clockwise (arrow) direction is imparted by the action of a coil spring (not shown), which resists the compression coil spring 11. The rear end of the piston holder in the advanced position is locked to prevent its retreat (Fig. 4). Reference numeral 13 is a cylinder locking claw that is also pivotally attached to the casing of the launcher. Similarly, a twisting coil spring (not shown) imparts a turning habit in the counterclockwise (arrow) direction, and moves backward against the compression coil spring 11. The rear end of the cylinder holder 8 in the position is locked to prevent its advance (FIG. 4). The cylinder locking claw is also in contact with the slope of the piston holder 7, and the locked state of the cylinder holder by the cylinder locking claw is released by the backward movement of the piston holder 7 (FIGS. 5 and 6).
【０００８】（励起手段の構成）１４は該発射機筐体の
蓋体としての機能を有する操作扞で、回動中心軸１５に
よって該筐体に一端が枢着されている。該操作扞は該回
動中心から少し偏位した位置に駆動ピン１６を具え、該
回動中心軸を中心として約９０度の回動範囲内において
回動操作される（図９）。１７は該筐体内の前記２本の
案内軸１０の間にそれらに沿って前後方向に摺動自在に
設けられた駆動扞で、その後端部側にはＬ字状に屈曲し
た垂直部が形成され、該垂直部には長孔１８が設けら
れ、この長孔に対して前記駆動ピン１６が係合している
（図７）。該駆動扞の中間部には、該ピストンホルダー
７と係合して、これを前進方向のみに駆動するピストン
駆動爪１９と、該シリンダーホルダー８と係合して、こ
れを後退方向のみに駆動するシリンダー駆動爪２０とが
設けられている。これらによって、該操作扞の回動運動
は該駆動扞の前後運動に変換され、該駆動扞の前後運動
のうちの、前方向の運動によって、前記ピストンホルダ
ー７の前進運動が、また、後方向の運動によって前記シ
リンダーホルダー８の後退運動が生じ、該圧縮コイルバ
ネに抗して該両ホルダーが互いに接近する方向に摺動さ
れた後、それぞれの蓄勢位置において、対応する位置に
設けられた前記ピストン係止爪１２またはシリンダー係
止爪１３によって係止される（図４，９）。(Structure of Exciting Means) 14 is an operating rod having a function as a cover of the casing of the launcher, and one end thereof is pivotally attached to the casing by a rotation center shaft 15. The operating rod is provided with a drive pin 16 at a position slightly deviated from the center of rotation, and is rotated within a range of about 90 degrees about the center axis of rotation (FIG. 9). Reference numeral 17 denotes a drive rod provided between the two guide shafts 10 in the housing so as to be slidable in the front-rear direction along the guide shafts 10, and a vertical portion bent in an L-shape is formed on the rear end side thereof. The vertical portion is provided with a long hole 18, and the drive pin 16 is engaged with the long hole (FIG. 7). An intermediate portion of the driving rod is engaged with the piston holder 7 and drives the piston driving claw 19 only in the forward direction, and is engaged with the cylinder holder 8 to drive it only in the backward direction. And a cylinder driving claw 20 for operating the same. By these, the rotational movement of the operating rod is converted into the forward / backward movement of the drive rod, and the forward movement of the forward / backward movement of the drive rod causes the forward movement of the piston holder 7 and the backward movement. The movement of the cylinder holder 8 causes the cylinder holder 8 to retreat, and the holders are slid in the directions toward each other against the compression coil spring. It is locked by the piston locking claw 12 or the cylinder locking claw 13 (FIGS. 4 and 9).
【０００９】（発射行程）２１は引き金ボタンで、全圧
縮状態、即ち該ピストンホルダーがその前進位置に、該
シリンダーホルダーがその後退位置にそれぞれ係止さ
れ、それらの間の該圧縮コイルバネに弾性エネルギーが
最も蓄積された状態（図４）において、該引き金ボタン
を押圧して該ピストン係止爪１２を反時計方向に回動さ
せることによって、該ピストンホルダーの係止を解除
し、それが該圧縮コイルバネの力で後退位置まで後退さ
れることを許す（図５）。このようにして該ピストンホ
ルダーが後退されることによって、前記吸引ポンプ内に
は初期負圧が発生する（図２）。このピストンホルダー
のみが解放された半解放状態から、これに引き続いて、
該シリンダーホルダー８の前進が生じる。すなわち、該
ピストンホルダーの後退に駆動されて、前記シリンダー
係止爪１３の時計方向の回動が生じ、これによって、該
シリンダーホルダーの係止が解除され、前記発射機筐体
及びピストンに対して該シリンダーホルダーと前記シリ
ンダー４が前進され、さらに大きな負圧を吸引ポンプ内
に発生しつつ、内針に対して外針が前進し、全解放状
態、即ち該ピストンホルダーがその後退位置にあり、該
シリンダーホルダーがその前進位置に移動し、それらの
間の該圧縮コイルバネの弾性エネルギーが最も解放され
た全開放状態（図３，図６）となる。A (trigger stroke) 21 is a trigger button, which is in a fully compressed state, that is, the piston holder is locked in its forward position and the cylinder holder is locked in its retracted position, and elastic energy is applied to the compression coil spring between them. In the most accumulated state (FIG. 4), the trigger button is pressed to rotate the piston locking claw 12 counterclockwise to release the locking of the piston holder, which causes the compression of the compression. Allow the coil spring to retract to the retracted position (Fig. 5). By retracting the piston holder in this way, an initial negative pressure is generated in the suction pump (FIG. 2). Following this from the semi-released state where only this piston holder was released,
Advancement of the cylinder holder 8 occurs. That is, when the piston holder is driven to move backward, the cylinder locking claw 13 is rotated in the clockwise direction, whereby the locking of the cylinder holder is released, and the cylinder housing is engaged with the piston housing. While the cylinder holder and the cylinder 4 are moved forward and a larger negative pressure is generated in the suction pump, the outer needle advances with respect to the inner needle and is fully released, that is, the piston holder is in its retracted position, The cylinder holder moves to its advanced position, and the compression coil spring between them is in the fully opened state in which the elastic energy is most released (FIGS. 3 and 6).
【００１０】（励起行程）このような全解放状態におい
て、該吸引ポンプ内の負圧が最も高まり、外針５の前進
によってその針先で削り取られた患部の組織片は、その
負圧で吸引ポンプ内に吸引採取される。つぎに、前記操
作扞１４を垂直位置まで引き起こして該筐体を開けば、
そこから使用済みの生検器を取り出すことができる（図
７）。なお、このときには、後述するセットレバー２２
は未だ作動状態とはなっていない。さらに、該操作扞１
４を再び水平に戻すことによって、該筐体がその操作扞
で蓋をされ、同時に、前記駆動扞１７が前進される。そ
の際、図示しないトーションバネの作用で時計（矢印）
方向に常時付勢されている前記ピストン駆動爪１９が該
ピストンホルダー７と係合し、それをその後退位置から
前進位置まで該圧縮コイルバネに抗して前進させ、該ピ
ストンホルダーがその前進位置まで復帰されたところ
で、該ピストン係止爪１２が該ピストンホルダーを捉
え、その後退を阻止する（図８）。この半圧縮状態で
は、該ピストンホルダーは蓄勢された前進位置にあるも
のの、該シリンダーホルダーは未だ解放されたままの前
進位置にある。２２はセットレバーで、該ピストンホル
ダーが前進位置まで前進されたことによって、一端がこ
れと係合して時計方向に少し回動されて作動状態とな
る。この半圧縮状態から再び操作扞が垂直に引き起こさ
れると、これに伴って該駆動扞１７が再び後退される。
このときには、該セットレバー２２は既に作動状態とな
っているので、その他端で該シリンダー駆動爪２０を、
常時時計（矢印）方向に付勢している図示しないトーシ
ョンバネに抗して、反時計方向に回動し、それを該シリ
ンダーホルダー８と係合するように上方に突出させてい
る。したがって、該駆動扞が後退されると、該シリンダ
ーホルダーもその前進位置から後退位置まで後退させら
れる。この後退位置で前記シリンダー係止爪１３が該シ
リンダーホルダーを係止する。この結果、該ピストンホ
ルダーはその前進位置に、該シリンダーホルダーはその
後退位置にそれぞれ係止され、それらの間の該圧縮コイ
ルバネには弾性エネルギーが最も蓄積された状態となる
（図９）。このとき、蓋体兼用の操作扞１４は開いたま
まであり、新しい生検器を載置することができる。新し
い生検器を載置した後に、該操作扞を再び水平に閉じれ
ば、前述した全圧縮状態（図４）となる。なお、２３は
生検器発射の際に、該ピストン駆動爪１９が該ピストン
ホルダーの後退の障害とならないように、該操作扞が閉
じられているときには、前記図示しないトーションバネ
に抗して反時計方向に回動させるための捻りコイルバネ
である。なお、本実施例は、蓋体兼用の操作扞を用い
て、間接的に該ピストンホルダーとシリンダーホルダー
を摺動させることで該圧縮コイルバネに弾性エネルギー
を蓄積する構成となっているが、本発明はこのような構
成のもののみに限定されるものではない。例えば、蓋体
を開けて生検器を載置するときに、直接に該ピストンホ
ルダーとシリンダーホルダーを手動で前後に摺動させて
該圧縮コイルバネに弾性エネルギーを蓄積する構成とす
ることもできる。この場合には、前記駆動扞１７、ピス
トン駆動爪１９、シリンダー駆動爪２０等は不要とな
る。(Excitation process) In such a fully released state, the negative pressure in the suction pump is the highest, and the tissue piece of the affected part scraped off by the tip of the outer needle 5 is sucked by the negative pressure. It is sucked and collected in the pump. Next, if the operating bar 14 is raised to the vertical position to open the housing,
The used biopsy device can be removed from there (Fig. 7). At this time, the set lever 22 to be described later
Is not yet operational. Furthermore, the operation rod 1
By returning 4 to horizontal again, the housing is covered by its operating bar and at the same time the drive bar 17 is advanced. At that time, a clock (arrow) is operated by the action of a torsion spring (not shown).
The piston drive pawl 19 which is always urged in the direction engages with the piston holder 7 and advances it from its retracted position to its advanced position against the compression coil spring until the piston holder reaches its advanced position. When returned, the piston locking claw 12 catches the piston holder and prevents its retreat (FIG. 8). In this semi-compressed state, the piston holder is in the stored forward position, but the cylinder holder is still in the released forward position. Reference numeral 22 denotes a set lever, and when the piston holder is advanced to the advance position, one end of the set lever is engaged with the set lever to be slightly rotated clockwise to be in an operating state. When the operating rod is vertically raised again from the semi-compressed state, the drive rod 17 is retracted again in association with this.
At this time, since the set lever 22 is already in the operating state, the cylinder drive claw 20 is
It is rotated counterclockwise against a torsion spring (not shown) which is always biased in the clockwise direction (arrow), and is projected upward so as to engage with the cylinder holder 8. Therefore, when the drive rod is retracted, the cylinder holder is also retracted from its advanced position to its retracted position. In this retracted position, the cylinder locking claw 13 locks the cylinder holder. As a result, the piston holder is locked in its forward position and the cylinder holder is locked in its retracted position, and elastic energy is most accumulated in the compression coil spring between them (FIG. 9). At this time, the operation pallet 14 also serving as the lid remains open, and a new biopsy device can be placed. If a new biopsy device is placed and then the operating bar is closed horizontally again, the above-mentioned fully compressed state (FIG. 4) is obtained. When the biopsy device is fired, the reference numeral 23 indicates that the piston driving pawl 19 does not interfere with the backward movement of the piston holder, and when the operating rod is closed, it is counteracted against the unillustrated torsion spring. It is a torsion coil spring for rotating clockwise. In addition, in the present embodiment, the operation hood serving also as the lid is used to indirectly slide the piston holder and the cylinder holder to store elastic energy in the compression coil spring. Is not limited to such a configuration. For example, when the lid is opened and the biopsy device is placed, the piston holder and the cylinder holder can be manually slid back and forth to store elastic energy in the compression coil spring. In this case, the drive rod 17, the piston drive pawl 19, the cylinder drive pawl 20 and the like are unnecessary.
【００１１】[0011]
【実施例２】従来から真空採血管として知られている減
圧された容器を、本発明における生検器の負圧手段とし
て用いたものを実施例２として以下に示す。なお、本実
施例においては、実施例１記載の発射機をそのまま利用
できるように、生検器を構成したから、以下の説明にお
いて発射機自体の詳細な説明は省略する。 （生検器の構成）図１１ないし１３において、１は生検
器で、該生検器は、中空針管からなる内針３を具えた内
筒２と、同じく中空針管からなる外針５を先端に具えた
外筒４とを有し、該内針と外針で二重構造の生検針を構
成している。しかし、これらの内筒と外筒は負圧ポンプ
としての機能を有しない。該内針は、その先端に先端が
閉じられた先端針先３ａとその近傍位置の針管壁に設け
られた先端開孔３ｂとを有すると共に、その中空針管の
後端にも先端と同様な後端針先３ｃと後端開孔３ｄとが
形成された両端針先のものであって、それらの開孔は該
中空針管の内部の中空孔を介して通じている。該中空針
管の中間部分にはハブ部分が形成され、該ハブ部分は該
内筒の筒底２ａと一体となっている。本実施例におい
て、前記負圧手段は従来から真空採血管として知られて
いるものと同様な真空採取管３０であって、該真空採取
管は採取管本体３０ａとその内部を減圧された状態で密
閉するゴム栓３０ｂとからなり、該真空採取管は該内筒
の内部に、その後方開口２ｂから摺動可能に装着され、
該内針の後端開孔３ｄと該真空採取管のゴム栓３０ｂと
は、その前後位置関係によって開閉される開閉弁を構成
している。３１は該真空採取管の後端部に着脱可能に結
合されて、その長さを延長し衝撃を緩和するアダプター
で、該生検器が前記実施例記載の発射機に載置された際
に、該採取管の後端が発射機筐体内壁面に直接当接した
場合と同様な働きをする。なお、発射機及び生検器が該
真空採取管に合わせて設計されたものであれば、このよ
うなアダプターは特に必要はない。[Embodiment 2] An embodiment in which a decompressed container conventionally known as a vacuum blood collection tube is used as a negative pressure means of a biopsy device according to the present invention will be described below. In addition, in this embodiment, since the biopsy device is configured so that the launcher described in the first embodiment can be used as it is, detailed description of the launcher itself will be omitted in the following description. (Structure of biopsy device) In FIGS. 11 to 13, 1 is a biopsy device, which comprises an inner cylinder 2 having an inner needle 3 made of a hollow needle tube and an outer needle 5 also made of a hollow needle tube. The outer cylinder 4 is provided at the tip, and the inner needle and the outer needle constitute a biopsy needle having a double structure. However, these inner cylinder and outer cylinder do not function as a negative pressure pump. The inner needle has a tip needle tip 3a whose tip is closed at its tip and a tip opening 3b provided in the needle tube wall in the vicinity of the tip, and the inner end of the hollow needle tube is similar to the tip. This is a double-ended needle tip having a rear-end needle tip 3c and a rear-end aperture 3d formed therein, and these apertures communicate with each other through a hollow hole inside the hollow needle tube. A hub portion is formed at an intermediate portion of the hollow needle tube, and the hub portion is integrated with the tube bottom 2a of the inner tube. In the present embodiment, the negative pressure means is a vacuum collection tube 30 similar to that conventionally known as a vacuum blood collection tube, and the vacuum collection tube is in a state in which the collection tube body 30a and the inside thereof are decompressed. And a rubber stopper 30b for sealing, the vacuum sampling tube is slidably mounted inside the inner cylinder from the rear opening 2b thereof.
The rear end opening 3d of the inner needle and the rubber stopper 30b of the vacuum sampling tube constitute an opening / closing valve that is opened / closed depending on the front-rear positional relationship. Reference numeral 31 is an adapter that is detachably coupled to the rear end of the vacuum sampling tube to extend its length and absorb impact, and when the biopsy device is mounted on the launcher described in the above embodiment. , The same operation as when the rear end of the sampling tube directly abuts the inner wall surface of the launcher housing. If the launcher and the biopsy device are designed for the vacuum sampling tube, such an adapter is not particularly necessary.
【００１２】（発射行程）該真空採取管が該アダプター
を介してその指標位置（図示せず）まで該内筒内部に手
で嵌挿された状態において、該内針の後端針先３ｃは該
ゴム栓を未だ貫通していない状態で止まっている（図１
１）。この状態の生検器を、前記第１実施例における全
圧縮状態（図９）の発射機に載置すると、該真空採取管
の後端は該アダプターを介して、発射機筐体の内部壁面
に当接し、該真空採取管は後退することができない状態
となる。この状態で、生検針の針先は患部の手前位置ま
で刺通される。つぎに、前記引き金ボタン２１が押圧さ
れると、前記ピストン係止爪１２を介して、前記ピスト
ンホルダーの係止が解除され、該内筒２が前記圧縮コイ
ルバネの力で後退位置まで後退される。これによって該
内筒と一体の該内針の後端針先が該真空採取管のゴム栓
を貫通し、その近傍の該後端開孔３ｄも真空採取管内に
露出される（図１２）。これによって、真空採取管の内
部の負圧が生検針の針先まで伝達される。この後の発射
行程は前記実施例と同様であり、外針５は外筒４と共に
前進される（図１３）。このようにして、検体が採取さ
れた該真空採取管は該ゴム栓がなされたまま該アダプタ
ーを介して該生検器から回収される。本実施例において
は、外針が発射された直後に最大の負圧が発生し、ま
た、外筒の前進する際に負圧を発生させるための抵抗が
生じず、生検針の発射速度が向上するという特徴があ
る。(Firing stroke) In a state where the vacuum sampling tube is manually inserted into the inner cylinder to the index position (not shown) through the adapter, the rear needle tip 3c of the inner needle is The rubber stopper has not yet penetrated (Fig. 1).
1). When the biopsy device in this state is placed on the launcher in the fully compressed state (FIG. 9) in the first embodiment, the rear end of the vacuum sampling tube is passed through the adapter to the inner wall surface of the launcher housing. , And the vacuum sampling tube cannot be retracted. In this state, the tip of the biopsy needle is pierced to a position in front of the affected area. Next, when the trigger button 21 is pressed, the locking of the piston holder is released via the piston locking claw 12, and the inner cylinder 2 is retracted to the retracted position by the force of the compression coil spring. . As a result, the tip of the rear end of the inner needle, which is integral with the inner cylinder, penetrates the rubber stopper of the vacuum sampling tube, and the rear end opening 3d in the vicinity thereof is also exposed in the vacuum sampling tube (FIG. 12). As a result, the negative pressure inside the vacuum sampling tube is transmitted to the tip of the biopsy needle. The subsequent firing process is similar to that of the above-described embodiment, and the outer needle 5 is advanced together with the outer cylinder 4 (FIG. 13). In this way, the vacuum collection tube from which the sample has been collected is collected from the biopsy device through the adapter while the rubber stopper is kept. In the present embodiment, the maximum negative pressure is generated immediately after the outer needle is fired, and the resistance for generating the negative pressure is not generated when the outer cylinder is advanced, so that the firing speed of the biopsy needle is improved. There is a feature to do.
【００１３】[0013]
【実施例３】本実施例においても、従来から真空採血管
として知られている前記真空採取管が生検装置の負圧手
段として用いられている。前述した第２実施例のものと
の主要な構成上の相違点は、生検器部分と発射機部分と
は一体化しており、これに代わって採取管のみが内筒に
対して着脱自在に装着され、採取管のアダプターはな
く、また、圧縮コイルバネは専ら外筒を前進させるため
に使用されているという点である。本実施例に係る生検
装置の施術法においては、患部に生検針を刺通した後に
採取管を前進させ、これによって前述した開閉弁を開か
せる。[Embodiment 3] Also in this embodiment, the above-mentioned vacuum collection tube conventionally known as a vacuum blood collection tube is used as the negative pressure means of the biopsy device. The main structural difference from the second embodiment described above is that the biopsy part and the launcher part are integrated, and instead only the sampling tube is detachable from the inner cylinder. It is fitted, there is no collection tube adapter, and the compression coil spring is used exclusively to advance the barrel. In the method of operating the biopsy device according to the present embodiment, the biopsy needle is pierced through the affected area and then the sampling tube is advanced to open the on-off valve.
【００１４】（生検器部分の構成）図１４ないし１６に
示す実施例３において、生検器部分として、中空針管か
らなる内針３を具えた内筒２と、同じく中空針管からな
る外針５を先端に具えた外筒４とを有し、該内針と外針
で二重構造の生検針が構成されている。検体を採取吸引
するための前記負圧手段は真空採取管３０であって、該
真空採取管は該内筒の内部に、その後方開口２ｂから装
着される。該内針の後端と採取管のゴム栓とで構成され
る開閉弁の機能は基本的に実施例２の場合と変わりな
い。すなわち、図１５に示す施術前の状態において、該
真空採取管は指標（図示せず）まで挿入された仮結合の
状態で内筒に装着されており、該内針の後端針先３ｃは
該真空採取管のゴム栓３０ｂを貫通してはおらず、該内
針の後端開孔３ｄとゴム栓３０ｂとで構成される開閉弁
は閉じられたままである。この開閉弁は、生検針を患部
手前まで刺通した施術状態において、該採取管を手で押
圧して筒底２ａに当接するまで前進させ、内針の後端針
先３ｃが該ゴム栓を貫通し、その近傍の後端開孔３ｄが
該採取管内に露出することで開かれる（図１６）。(Structure of biopsy device part) In the embodiment 3 shown in FIGS. 14 to 16, as the biopsy device part, an inner cylinder 2 having an inner needle 3 made of a hollow needle tube and an outer needle also made of a hollow needle tube. An outer cylinder 4 having a tip 5 is provided, and a biopsy needle having a double structure is constituted by the inner needle and the outer needle. The negative pressure means for collecting and sucking the sample is a vacuum sampling tube 30, and the vacuum sampling tube is mounted inside the inner cylinder from its rear opening 2b. The function of the on-off valve composed of the rear end of the inner needle and the rubber stopper of the sampling tube is basically the same as that of the second embodiment. That is, in the state before the operation shown in FIG. 15, the vacuum sampling tube is attached to the inner cylinder in a temporarily connected state in which an index (not shown) is inserted, and the rear end needle tip 3c of the inner needle is The rubber stopper 30b of the vacuum sampling tube is not penetrated, and the open / close valve constituted by the rear end opening 3d of the inner needle and the rubber stopper 30b remains closed. In the operation state in which the biopsy needle is pierced to the front side of the affected area, this on-off valve is pushed forward by pushing the sampling tube by hand until it comes into contact with the tube bottom 2a, and the rear end needle tip 3c of the inner needle opens the rubber stopper. It penetrates and the rear end opening 3d in the vicinity thereof is exposed by being exposed in the sampling tube (FIG. 16).
【００１５】（発射機部分の構成）本実施例において、
発射機部分は、前記内筒２と外筒４との間で作用する圧
縮コイルバネ１１と、該バネに発射のための弾性エネル
ギーが蓄えられた圧縮状態とそれが開放された伸長状態
に対応して、該内筒後端と外筒先端との間隔を規制する
筐体９と、該筐体による係止を解除して該圧縮状態に対
応する後退位置から該伸長状態に対応する前進位置まで
該外筒を前進するための引き金手段とからなる。すなわ
ち、該圧縮コイルバネ１１の後端部は、該内筒の後端部
を該筐体の後端部に押し付け、両者を常に一体的に結合
させている。一方、該圧縮コイルバネの先端部は、該外
筒を、常に前方に付勢している。該外筒は該後退位置か
ら前進位置まで軸線方向に所定距離摺動自在に、かつ、
該軸線を回転中心とする相対的な回転が生じないよう
に、該筐体に対して収容されている。９ｇは、該圧縮コ
イルバネの力に抗して該外筒を該後退位置に係止するた
めに該筐体の内壁面に内向きに設けられた一対の係合突
起で、該軸線を挟んで対向した１８０度対称位置にそれ
ぞれ配置されている。これに対して、一対の弾性扞部４
ｅが該外筒の後端部からさらに延長されて後方に延び、
その末端は自由端４ｆとなっており、それらの自由端に
至る各中間部には該筐体側の係合突起９ｇと係合する一
対の係合爪４ｇがそれぞれ外向きに設けられている。該
筐体の内側には、該引き金手段として、前後方向に摺動
自在な引き金リング２１が配置されている。その操作部
は該筐体に設けられたスリットを介してその外側に突出
し、これを操作することによって該引き金リングを前方
に摺動させることができる。該引き金リングの内側に斜
面が形成され、これが該引き金リングの前方への摺動に
対応して該弾性扞部４ｅの自由端４ｆを内向きに押圧
し、その中間部を内側にたわませ、これによって該外筒
側の係止爪４ｇと対応する該筐体側の係合突起９ｇとの
係合関係が解除される。(Structure of Launcher Part) In the present embodiment,
The launcher portion corresponds to a compression coil spring 11 acting between the inner cylinder 2 and the outer cylinder 4, a compressed state in which elastic energy for firing is stored in the spring, and an expanded state in which the elastic energy is released. A case 9 for restricting the distance between the rear end of the inner cylinder and the front end of the outer cylinder; And trigger means for advancing the outer cylinder. That is, the rear end portion of the compression coil spring 11 presses the rear end portion of the inner cylinder against the rear end portion of the housing so that they are always integrally combined. On the other hand, the tip of the compression coil spring always biases the outer cylinder forward. The outer cylinder is slidable in the axial direction by a predetermined distance from the retracted position to the advanced position, and
It is housed in the housing so that relative rotation around the axis does not occur. Reference numeral 9g is a pair of engaging projections provided inwardly on the inner wall surface of the housing for locking the outer cylinder in the retracted position against the force of the compression coil spring, and sandwiching the axis line. They are arranged at opposite 180-degree symmetrical positions. On the other hand, the pair of elastic rods 4
e is further extended from the rear end of the outer cylinder and extends rearward,
The ends thereof are free ends 4f, and a pair of engaging claws 4g that engage with the engaging projections 9g on the housing side are provided outward at the respective intermediate portions reaching the free ends. A trigger ring 21 which is slidable in the front-rear direction is arranged inside the housing as the trigger means. The operating portion projects to the outside through a slit provided in the housing, and by operating this, the trigger ring can be slid forward. An inclined surface is formed inside the trigger ring, which pushes the free end 4f of the elastic rod portion 4e inward in response to the forward sliding of the trigger ring and bends the middle portion thereof inward. As a result, the engagement relationship between the locking claw 4g on the outer cylinder side and the corresponding engagement protrusion 9g on the housing side is released.
【００１６】（発射行程）該開放状態（図１７）におい
て、該外筒を一方の手で持ち、同時にもう一方の手で該
筐体を持ち、該圧縮コイルバネに抗して該外筒を後退位
置まで後退させると、該圧縮コイルバネに弾性エネルギ
ーが蓄積されながら該外筒は相対的に後退し、該後退位
置において該外筒後方の係止爪４ｇと対応する該筐体中
間部の係合突起９ｇとが係合し、それらを付勢状態に維
持する（図１５）。この状態において、後方開口２ｂか
ら該内筒内に採取管を指標位置（図示せず）まで挿入す
る。前述したようにこの状態においては内針の後端針先
は未だ該採取管のゴム栓を貫通していない。この状態で
生検針の針先を患部の少し手前位置まで刺通した後、該
採取管をその先端が内筒の筒底に当接するまで更に奥へ
押し込む（図１６）。これによって、採取管の内部の負
圧が生検針の先端針先まで伝達される。次ぎに、引き金
リング２１が前進されて、該外筒と筐体との係合関係が
解除されると、該外筒が筐体に対して後退位置から前進
位置まで前進され、該内針に対して外針が前進する（図
１７）。その後、負圧によって該採取管の内部に吸引収
容された検体は、該ゴム栓がなされたままの該採取管ご
と、該内筒から抜き取られる。(Firing stroke) In the opened state (FIG. 17), the outer cylinder is held by one hand and at the same time the housing is held by the other hand, and the outer cylinder is retracted against the compression coil spring. When retracted to the position, the outer cylinder relatively retracts while elastic energy is accumulated in the compression coil spring, and at the retracted position, the locking claw 4g behind the outer cylinder engages with the corresponding middle portion of the casing. The projections 9g engage and maintain them in a biased state (FIG. 15). In this state, the sampling tube is inserted into the inner cylinder from the rear opening 2b to the index position (not shown). As described above, in this state, the rear needle tip of the inner needle has not yet penetrated the rubber stopper of the sampling tube. In this state, the tip of the biopsy needle is pierced to a position slightly before the affected area, and then the sampling tube is pushed further inward until its tip comes into contact with the bottom of the inner cylinder (FIG. 16). As a result, the negative pressure inside the collection tube is transmitted to the tip of the tip of the biopsy needle. Next, when the trigger ring 21 is advanced to release the engagement relationship between the outer cylinder and the housing, the outer cylinder is advanced from the retracted position to the advanced position with respect to the housing, and the inner needle is attached to the inner needle. The outer needle moves forward (FIG. 17). After that, the sample suctioned and accommodated inside the sampling tube by the negative pressure is extracted from the inner cylinder together with the sampling tube with the rubber stopper.
【００１７】[0017]
【実施例４】次に、実施例４として上記実施例３の変形
例を図１８ないし２１に示す。実施例３のものとの相違
点は、開閉弁の構成のみである。すなわち、本実施例に
おいて、後述する中間開孔とゴム部材とが開閉弁を構成
し、内針の後端針先は施術前に真空採取管が装着された
際にそのゴム栓を貫通している。Fourth Embodiment Next, as a fourth embodiment, a modification of the third embodiment is shown in FIGS. The only difference from the third embodiment is the structure of the on-off valve. That is, in this embodiment, an intermediate opening and a rubber member, which will be described later, constitute an opening / closing valve, and the rear needle tip of the inner needle penetrates the rubber stopper when the vacuum sampling tube is attached before the operation. There is.
【００１８】（生検器部分の構成）本実施例ににおい
て、内針３は、その先端に先端が閉じられた先端針先３
ａとその近傍位置の針管壁に設けられた先端開孔３ｂと
を有し、また、その後端にも先端と同様な後端針先と後
端開孔（いずれも図示せず）とが形成されている。本実
施例では実施例３の場合とは異なり、該内針のこれらの
開孔どうしがその中空針管の中空孔を介して直接的には
通じていない。すなわち、図２０および２１に拡大して
示すように、該中空針管はこれを支持する該内筒の筒底
２ａより前方位置において、樹脂を該中空孔の内部に詰
め込むことによって止栓３ｅが形成され、これによって
該中空孔は前半部分と後半部分とに分割されている。該
止栓の前後の隣接した針管壁には、該止栓を挟んで前方
の針管壁に一方の中間開孔３ｆが、また後方の針管壁に
は他方の中間開孔３ｇがそれぞれ形成され、該前方の中
間開孔３ｆは前記先端開孔３ｂと常に導通され、該後方
の中間開孔３ｇは前記後端開孔と常に導通されている。
４ｂは前記外筒４の筒底４ａの内側に対して接着剤を用
いて密着固定されたゴム部材で、その内部には中空部分
４ｃとそれを挟んでその前後に中実部分４ｄとが形成さ
れ、該ゴム部材を該内針が貫通し、該外筒と一体に前進
する該ゴム部材の中空部分に、該内針の一対の中間開孔
３ｆ，３ｇが共に露出されたときに、該中空部分を介し
て該止栓前後の一対の中間開孔が連絡され、これによっ
て前記先端開孔３ｂと後端開孔３ｄとが導通される。実
施例３と同様に、検体を吸引するための前記負圧手段は
真空採取管３０であって、該真空採取管は該内筒の内部
に、その後方開口２ｂから装着され、この装着状態にお
いて該内針の後端針先３ｃは該真空採取管のゴム栓３０
ｂを貫通しており、該後端開孔３ｄは常に該真空採取管
の内側に露出されている。(Structure of Biopsy Device Section) In this embodiment, the inner needle 3 has a tip needle tip 3 whose tip is closed.
a and a tip opening 3b provided in the wall of the needle tube in the vicinity thereof, and at the rear end thereof, there are a rear needle tip and a rear opening (both not shown) similar to the tip. Has been formed. In this embodiment, unlike the case of the third embodiment, these openings of the inner needle do not directly communicate with each other through the hollow hole of the hollow needle tube. That is, as shown in an enlarged view in FIGS. 20 and 21, the stopper 3e is formed by filling the hollow needle tube with resin inside the hollow hole at a position in front of the cylinder bottom 2a of the inner cylinder supporting the hollow needle tube. As a result, the hollow hole is divided into a first half portion and a second half portion. Adjacent to the front and rear of the stopper, one intermediate hole 3f is formed in the front needle wall and the other intermediate hole 3g is formed in the rear needle wall with the stopper interposed therebetween. The front intermediate hole 3f is always connected to the front end hole 3b, and the rear intermediate hole 3g is always connected to the rear end hole.
Reference numeral 4b is a rubber member which is tightly fixed to the inside of the cylinder bottom 4a of the outer cylinder 4 by using an adhesive, in which a hollow portion 4c and a solid portion 4d before and after the hollow portion 4c are formed. When the inner needle penetrates the rubber member and both of the pair of intermediate openings 3f and 3g of the inner needle are exposed in the hollow portion of the rubber member that advances integrally with the outer cylinder, A pair of intermediate apertures before and after the stopper is connected through the hollow portion, so that the front end aperture 3b and the rear end aperture 3d are electrically connected. Similar to the third embodiment, the negative pressure means for sucking the sample is the vacuum sampling tube 30, which is mounted inside the inner cylinder from its rear opening 2b, and in this mounted state. The rear needle tip 3c of the inner needle is a rubber stopper 30 of the vacuum sampling tube.
The rear end opening 3d penetrates b and is always exposed inside the vacuum sampling tube.
【００１９】（発射行程）該真空採取管が装着されてい
ない開放状態において、該外筒を一方の手で持ち、同時
にもう一方の手で該筐体を持ち、該圧縮コイルバネに抗
して該外筒を後退位置まで後退させると、該圧縮コイル
バネに弾性エネルギーを蓄積しながら該外筒は相対的に
後退し、該後退位置において該外筒後方の係止爪４ｇと
対応する該筐体中間部の係合突起９ｇとが係合し、それ
らを付勢状態に維持する。この状態において、該後方開
口から該内筒内に真空採取管３０を挿入し、内針の後端
針先で該採取管のゴム栓を貫通させる（図１８）。該付
勢状態においては、前記ゴム部材の中実部によって該止
栓の前後の中間開孔が覆われており（図２０）、前記先
端開孔３ｂと後端開孔３ｄとは導通されていない。次ぎ
に、引き金リング２１が前進されると、該外筒と筐体と
の係合関係が解除され、これによって該外筒が筐体に対
して後退位置から前進位置まで前進され、該内針に対し
て外針が前進して開放状態となる（図１９）。その際、
前記ゴム部材も該外筒と一体に前進し、その中空部分４
ｃ内に該中間開孔３ｆと３ｇとが共に露出され、これに
よって前記開閉弁が開かれる（図２１）。(Striking stroke) In the open state where the vacuum sampling tube is not attached, the outer cylinder is held by one hand and at the same time the housing is held by the other hand, and the outer tube is held against the compression coil spring. When the outer cylinder is retracted to the retracted position, the outer cylinder relatively retracts while accumulating elastic energy in the compression coil spring, and at the retracted position, the middle of the casing corresponding to the locking claw 4g behind the outer cylinder. Engages with the engagement projections 9g on the sections to maintain them in a biased state. In this state, the vacuum sampling tube 30 is inserted into the inner cylinder from the rear opening, and the rubber plug of the sampling tube is penetrated by the tip of the rear end of the inner needle (FIG. 18). In the biased state, the solid part of the rubber member covers the intermediate openings before and after the stopper (FIG. 20), and the front end opening 3b and the rear end opening 3d are electrically connected. Absent. Next, when the trigger ring 21 is advanced, the engagement relationship between the outer cylinder and the housing is released, and thereby the outer cylinder is advanced from the retracted position to the advanced position with respect to the inner needle. On the other hand, the outer needle advances and becomes open (Fig. 19). that time,
The rubber member also advances integrally with the outer cylinder, and its hollow portion 4
The intermediate openings 3f and 3g are both exposed in c, whereby the on-off valve is opened (FIG. 21).
【発明の効果】本発明は、以上のように構成されている
から、検体採取性を極めて向上させた新規な生検装置を
提供することができる。また、そのような生検装置の負
圧発生部を着脱自在とすることにより、その他の部分か
らなる発射機を繰り返し使用可能としたり、または、一
度の施術において負圧手段としての真空採取管を交換し
て複数の検体の採取を可能とするなど、経済性にも優れ
た生検装置を提供することができる。EFFECTS OF THE INVENTION Since the present invention is configured as described above, it is possible to provide a novel biopsy device with extremely improved sample collection property. In addition, by making the negative pressure generating portion of such a biopsy device detachable, it is possible to repeatedly use a launcher consisting of other parts, or to use a vacuum sampling tube as negative pressure means in one operation. It is possible to provide a biopsy device which is excellent in economic efficiency such as exchanging a plurality of specimens.
【図１】は本発明の実施例１に係る生検器の全圧縮状態
の側断面図FIG. 1 is a side sectional view of a biopsy device according to a first embodiment of the present invention in a fully compressed state.
【図２】は同じく半開放状態の側断面図FIG. 2 is a side sectional view of the same semi-open state.
【図３】は同じく全開放状態の側断面図[Fig. 3] is a side sectional view of the same fully opened state.
【図４】は本発明の実施例１に係る発射機の全圧縮状態
の側断面図FIG. 4 is a side sectional view of the launcher according to the first embodiment of the present invention in a fully compressed state.
【図５】は同じく半開放状態の側断面図FIG. 5 is a side sectional view of the same semi-open state.
【図６】は同じく全開放状態の側断面図FIG. 6 is a side sectional view of the same fully opened state.
【図７】は同じく蓋を開けた全開放状態の側断面図FIG. 7 is a side sectional view of the same fully opened state with the lid open.
【図８】は同じく半圧縮状態の側断面図FIG. 8 is a side cross-sectional view of the same semi-compressed state.
【図９】は同じく蓋を開けた全圧縮状態の側断面図FIG. 9 is a side sectional view of the same fully compressed state with the lid opened.
【図１０】は図９に対応する平面図10 is a plan view corresponding to FIG.
【図１１】は本発明の実施例２に係る生検器の全圧縮状
態の側断面図FIG. 11 is a side sectional view of the biopsy device according to the second embodiment of the present invention in a fully compressed state.
【図１２】は同じく半開放状態の側断面図FIG. 12 is a side sectional view of the same semi-open state.
【図１３】は同じく全開放状態の側断面図FIG. 13 is a side sectional view of the same fully opened state
【図１４】は同じく内針と外針の先端および後端部の各
要部の拡大断面図FIG. 14 is an enlarged cross-sectional view of each main part of the front and rear ends of the inner needle and the outer needle.
【図１５】は本発明の実施例３に係る生検装置の付勢状
態の側断面図FIG. 15 is a side cross-sectional view of a biopsy device according to a third embodiment of the present invention in a biased state.
【図１６】は同じく生検針の針先に負圧を生じさせた状
態の側断面図FIG. 16 is a side sectional view showing a state in which a negative pressure is similarly generated at the tip of the biopsy needle.
【図１７】は同じく開放状態の側断面図FIG. 17 is a side cross-sectional view of the same open state
【図１８】は本発明の実施例４に係る生検装置の付勢状
態の側断面図FIG. 18 is a side sectional view of the biopsy device according to the fourth embodiment of the present invention in a biased state.
【図１９】は同じく開放状態の側断面図FIG. 19 is a side sectional view of the same open state
【図２０】は同じく内針と外針の先端および中間部の各
要部の付勢状態における拡大断面図FIG. 20 is an enlarged cross-sectional view of the inner needle and the outer needle in the urging state of the main portions of the distal end and the intermediate portion.
【図２１】は同じく内針と外針の先端および中間部の各
要部の開放状態における拡大断面図FIG. 21 is an enlarged cross-sectional view of the inner needle, the outer needle, and the main portions of the distal end and intermediate portion in the open state.
１・・・・生検器 ２・・・・内筒 ３・・・・内針 ４・・・・外筒 ５・・・・外針 ６・・・・発射機 ７・・・・ピストンホルダー ８・・・・シリンダーホルダー ９・・・・筐体 １０・・・案内軸 １１・・・圧縮コイルバネ １２・・・係止爪 １３・・・係止爪 1 ... Biopsy device 2 ... Inner cylinder 3 ... Inner needle 4 ... Outer cylinder 5 ... Outer needle 6 ... Launcher 7 ... Piston holder 8 ... Cylinder holder 9 ... Casing 10 ... Guide shaft 11 ... Compression coil spring 12 ... Locking claw 13 ... Locking claw
Claims (3)
その後退位置から前進位置まで，それぞれ軸線方向に摺
動自在に保持する筐体９と、 該筐体に対して該内筒を後退方向に，該外筒を前進方向
にそれぞれ付勢するバネ手段１１と、 該バネ手段に抗して該内筒と外筒とをそれぞれ弾性エネ
ルギーの蓄えられた付勢状態に駆動する手段と、 該付勢状態におけるそれらの係止を解除して，先に該内
筒を後退させ，次に該外筒を前進させる手段とを具え、 該内筒と外筒とが前記生検針を介してその針先まで負圧
を伝える負圧ポンプを構成し，該外筒の前進前に該負圧
ポンプによって初期負圧が発生されていることを特徴と
する生検装置。1. A biopsy needle composed of an inner needle 3 and an outer needle 5, an inner cylinder 2 connected to the inner needle, an outer cylinder 4 connected to a needle base of the outer needle, and the inner cylinder. From the forward position to the retracted position and from the retracted position to the advanced position of the outer cylinder so as to be slidable in the axial direction, and the inner cylinder in the backward direction with respect to the housing. A spring means 11 for urging the outer cylinder in the forward direction, and a means for driving the inner cylinder and the outer cylinder to a biased state in which elastic energy is stored against the spring means. Means for releasing the locking of the inner cylinder in the energized state, retreating the inner cylinder first, and then advancing the outer cylinder, the inner cylinder and the outer cylinder having the needle through the biopsy needle. A negative pressure pump that transmits negative pressure to the front is constructed, and an initial negative pressure is generated by the negative pressure pump before the outer cylinder advances. And biopsy device.
と、 該内針に接続された内筒２と、 該外針の針基に接続された外筒４と、 該生検針を介してその針先まで負圧を伝える負圧手段
と、 該外筒を後退位置から前進位置まで軸線方向に摺動自在
に保持する筐体９と、 該筐体に対して外筒を前進方向に付勢するバネ手段１１
と、 該バネ手段に抗して該外筒を弾性エネルギーの蓄えられ
た後退位置に駆動する手段と、 該後退位置における係止を解除して該バネ手段の作用で
該外筒を前進位置まで前進させる手段とを具えた生検装
置において、 前記負圧手段が該内筒にその後方開口２ｂから軸線方向
に摺動可能に結合される真空採取管３０であって，該真
空採取管のゴム栓３ｂと，それを貫通する内針の後端針
先に設けられた後端開孔３ｄとが，それらの位置関係に
より，該内針の中空孔を介して該生検針の針先と該真空
採取管の内部とを連絡する開閉弁を構成することを特徴
とする生検装置。2. A biopsy needle composed of a hollow inner needle 3 and an outer needle 5, an inner cylinder 2 connected to the inner needle, an outer cylinder 4 connected to a needle base of the outer needle, Negative pressure means for transmitting a negative pressure to the needle tip via a biopsy needle, a casing 9 that holds the outer cylinder slidably in the axial direction from a retracted position to an advanced position, and an outer cylinder with respect to the casing. Means 11 for urging the blade in the forward direction
A means for driving the outer cylinder to a retracted position where elastic energy is stored against the spring means, and a lock for releasing the outer cylinder to the forward position by the action of the spring means. A biopsy device having a means for advancing, wherein the negative pressure means is a vacuum sampling tube 30 slidably coupled to the inner cylinder from its rear opening 2b in the axial direction, the rubber of the vacuum sampling tube being Depending on their positional relationship, the stopper 3b and the rear end opening 3d provided at the rear end needle tip of the inner needle that penetrates the stopper 3b and the needle tip of the biopsy needle through the hollow hole of the inner needle A biopsy device comprising an on-off valve that communicates with the inside of a vacuum sampling tube.
と、 該内針に接続された内筒２と、 該外針の針基に接続された外筒４と、 該生検針を介してその針先まで負圧を伝える負圧手段
と、 該外筒を後退位置から前進位置まで軸線方向に摺動自在
に保持する筐体９と、 該筐体に対して外筒を前進方向に付勢するバネ手段１１
と、 該バネ手段に抗して該外筒を弾性エネルギーの蓄えられ
た後退位置に駆動する手段と、 該後退位置における係止を解除して該バネ手段の作用で
該外筒を前進位置まで前進させる手段とを具えた生検装
置において、 前記負圧手段が該内筒にその後方開口２ｂから軸線方向
に摺動可能に結合される真空採取管３０であって、該外
筒に設けられたゴム部材４ｂと，それを貫通する内針３
に設けられた止栓３ｅ及びその前後の中間開孔３ｆ、３
ｇとが，該ゴム部材の中空部４ｃ及びその前後の中実部
４ｄとの位置関係により，該内針の中空孔を介して生検
針の針先と該真空採取管の内部とを連絡する開閉弁を構
成することを特徴とする生検装置。3. A biopsy needle composed of a hollow inner needle 3 and an outer needle 5, an inner cylinder 2 connected to the inner needle, an outer cylinder 4 connected to a needle base of the outer needle, Negative pressure means for transmitting a negative pressure to the needle tip via a biopsy needle, a casing 9 that holds the outer cylinder slidably in the axial direction from a retracted position to an advanced position, and an outer cylinder with respect to the casing. Means 11 for urging the blade in the forward direction
A means for driving the outer cylinder to a retracted position where elastic energy is stored against the spring means, and a lock for releasing the outer cylinder to the forward position by the action of the spring means. A biopsy device having a means for advancing, wherein the negative pressure means is a vacuum sampling tube 30 slidably coupled to the inner cylinder from its rear opening 2b in the axial direction, the vacuum collection tube 30 being provided on the outer cylinder. Rubber member 4b and inner needle 3 penetrating it
Stoppers 3e provided in the and intermediate openings 3f, 3f
g is connected to the needle tip of the biopsy needle and the inside of the vacuum sampling tube through the hollow hole of the inner needle due to the positional relationship between the hollow portion 4c of the rubber member and the solid portion 4d before and after the hollow portion 4c. A biopsy device comprising an on-off valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06314279A JP3074445B2 (en) | 1994-11-25 | 1994-11-25 | Biopsy device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06314279A JP3074445B2 (en) | 1994-11-25 | 1994-11-25 | Biopsy device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08140980A true JPH08140980A (en) | 1996-06-04 |
| JP3074445B2 JP3074445B2 (en) | 2000-08-07 |
Family
ID=18051456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06314279A Expired - Fee Related JP3074445B2 (en) | 1994-11-25 | 1994-11-25 | Biopsy device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3074445B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007236948A (en) * | 2006-03-07 | 2007-09-20 | Ethicon Endo Surgery Inc | Device for low-invasive internal tissue removal |
| WO2011034046A1 (en) * | 2009-09-15 | 2011-03-24 | 株式会社タスク | Biopsy device |
| JP2013532557A (en) * | 2010-07-27 | 2013-08-19 | プロメックス・テクノロジーズ・エルエルシー | Complete core biopsy device |
| US9237883B2 (en) | 2010-02-25 | 2016-01-19 | JJ Dogs LLC | Full core biopsy device |
| US11045173B2 (en) | 2014-09-05 | 2021-06-29 | Pave. Llc | Full core biopsy device |
| US20210220056A1 (en) * | 2017-11-30 | 2021-07-22 | Koninklijke Philips N.V. | Device and method for providing information about a biopsy taking process and biopsy |
-
1994
- 1994-11-25 JP JP06314279A patent/JP3074445B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007236948A (en) * | 2006-03-07 | 2007-09-20 | Ethicon Endo Surgery Inc | Device for low-invasive internal tissue removal |
| WO2011034046A1 (en) * | 2009-09-15 | 2011-03-24 | 株式会社タスク | Biopsy device |
| US9237883B2 (en) | 2010-02-25 | 2016-01-19 | JJ Dogs LLC | Full core biopsy device |
| JP2013532557A (en) * | 2010-07-27 | 2013-08-19 | プロメックス・テクノロジーズ・エルエルシー | Complete core biopsy device |
| JP2015154940A (en) * | 2010-07-27 | 2015-08-27 | プロメックス・テクノロジーズ・エルエルシー | full core biopsy device |
| US11045173B2 (en) | 2014-09-05 | 2021-06-29 | Pave. Llc | Full core biopsy device |
| US20210220056A1 (en) * | 2017-11-30 | 2021-07-22 | Koninklijke Philips N.V. | Device and method for providing information about a biopsy taking process and biopsy |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3074445B2 (en) | 2000-08-07 |
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