JPH02286148A - 鉗子のための多点ラッチ機構 - Google Patents

鉗子のための多点ラッチ機構

Info

Publication number
JPH02286148A
JPH02286148A JP2099112A JP9911290A JPH02286148A JP H02286148 A JPH02286148 A JP H02286148A JP 2099112 A JP2099112 A JP 2099112A JP 9911290 A JP9911290 A JP 9911290A JP H02286148 A JPH02286148 A JP H02286148A
Authority
JP
Japan
Prior art keywords
latch
clip
jaws
handle
handles
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
JP2099112A
Other languages
English (en)
Inventor
Gilson S Vasconcelos
ジルソン・エス・バスコンセロス
John A Santangelo
ジョン・エイ・サンタンジェロ
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.)
Codman and Shurtleff Inc
Original Assignee
Codman and Shurtleff Inc
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 Codman and Shurtleff Inc filed Critical Codman and Shurtleff Inc
Publication of JPH02286148A publication Critical patent/JPH02286148A/ja
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B7/00Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/14Locking means
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/28Surgical forceps
    • A61B17/2812Surgical forceps with a single pivotal connection
    • A61B17/2833Locking means

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【発明の詳細な説明】 〔発明の分野] 本発明は、ill子盟外r1器真のためのラッチ機1ル
、特に、動脈瘤クリップ1g持111子用の多点ラッチ
Ijll構に関する。
ラッチ機(ルは、クリラブをt11子顎でIl!侍し、
手1・11部1i’7 II近にもたらすことを容易に
するために、種々の予め決められたl11)随に両i1
1子顎をIt持する。
[発明の背景] I11子は、手術の間に、種々のクリップを然るべき部
位に配置するのに用いられる。 11りのクリップ、i
fA例、1L血クリツプは、鉗子の助けで適用される。
関心を特にもたれている止血クリップの一つのタイプは
、動脈瘤クリップで、モの一つのタイプは、米国特許N
o、4,777.950号りこ記述されている。
動脈瘤クリップを含む小面クリップは、手術中や手術部
に、血管を1V1じたり血管を強化するために、1m々
にl111管に適用される。−11子の両顎は、通例、
特殊な型のクリップを11!持するように段11されて
いる、ずなわら、シリツブは、手術助手によってε11
子の両顎にII!持され、次いで、9114医に手渡さ
れ、外?1医は、手術部1aにクリップを挿入する。
一11子の両顎でクリップをIl!持する際、外利萌手
は、先ず両顎を開き、そして、手でもってクリップを両
顎の1111にljlみ、次いで、両顎を、クリ・ツブ
が、適当にnられて、挿入中に外れてffちることの無
いように、十分りこ121ぬる。
この両顎の閉め加減を、クリ・ツブを開き−hめるため
に。
あまりに強くしないことがff1i!であるが、その1
1山は、層でない1合、クリップの適正な挿入を邪魔す
ることになるかもしれないからである。
両顎を予定fQ置にセットする方法は、例えば、米国特
許第3.393.680号に記載されるように、811
子の各ハンドルの内面からの突起し、」−バラツブかつ
インターロックする2@lの突起を用いることである。
これは適用する対象によって満足なロックが得られるが
、動脈JSFクリップを適用するには、特に都合が良い
とは云えない、i11子の2Ngの第4向するハンドル
の各内面間に延びる仮バネが、ロックを外す時に、11
1子ハンドルが予定m開き、かくして、両顎が対応する
予定wit<ように、両ハンドルに、ai[に離間する
ようにIff 1ilF Vlめ(blas)するのに
用いられている。
曲の横の口・シフ機構が米国特許第4.462.404
号に記載されている。この&1111子シフ機構は、両
顎を?Ji lik Ii’INにロックするのに用い
得る。l鉗子ハンドルの内面に11×す1寸けられた仮
バネが、油の鉗子ハンドルの内面に刻して積に延び、そ
して対向するハンドル内面に固定された)U雑なう・ン
チに係合する。この部属は、満足に作用するけれども、
決雑で、部品が多様で、単独に鉗子に躬Iみtでなけれ
ばならない、この(1のラッチ機(にでは、この機構が
、清洗中や、殺菌中に壊れたり、整合がずれたりしない
ように注意することが必要である。
手術助手が、クリップをn Ulに両顎1111で11
!持し、次いで、クリップを、それに1li1等の作用
を及ぼすこと無しに、適当な1fffifに固定セット
することが可能なように、I11子の両顎を11々の間
隔をもった予定位置にセットするの(こmいられ得る、
よりt1単な設計のラッチ騎置を有することが有用であ
ろう、これによって、外f:を助手は、速やかにクリッ
プを把持し、その組1子を外H医に手渡し、外事1医は
クリップを手Hi部fαに容易に陣人nf能となろう、
これはまた、手術助手による次のクリップの1[!涛を
容易ζこしたり、或は置いたばかりのクリップのIQ 
rll uえまたは除去を、手術部1aから7ブライヤ
(appHar)の引き−Lげ無しに、行うのをいっそ
う容易にするために、外科医がその11子に対するlり
をD1放する■に、ラッチが最初のIQffiにり11
イクルするのに役立つであろう、クリップの1i7 f
it ’IIえや、除去する場合に、速やかな、ラッチ
機構の11手リサイクルが非常に有効であろう。
[発明のW要] 本発明は、alll型子目°1器具用のラッチ機IKに
関する。
このi11子は、それぞれが前端8バにおいてヌ1向1
!l lf+に配置された顎を有し、および後端部にお
いて対向関係に配置されたハンドルを有する第1および
第2両R1日オを鴎える。これ等両部材は、両ハンドル
(以下において、°°ハンドル/ll″と訳す場合があ
る)が互いに向かって閉められるよう(ご1a軸結合さ
れている。このラッチa清は、上記第1部材から延び、
弾力的にir lf’l 11である自由端を有し、さ
らに、係合面を嬬えた第1ラッチ部を端える。′!A2
部材に取り付けられた第2う・ンチ部は、第1ラッチ部
の1.f+合而面の係合に適した自由端を有する。第1
ラツチivl自市塙および第2ラツチ81(は、係合へ
の1=I−訃を受けている。上記のハンドル部が第1予
定10直にある時に、−L!ll!第2ラッチ部の上記
自由端の少なくとも一部を受は容れ、かつ保持するため
に、留め成形体、好ましくは、シェルフが第1う・ンチ
部係合面に形成されている。上記ランチ機構は、上記第
2ラッチ部の自由端が、上記ハンドル部をざらに閉める
時に、上記係合面との係合から弾力的ζこ1uけ出させ
るための解放手段を1眞える。また、両ハンドルを^I
 In保持するように付勢するだめの手段が1「撓えら
れる。
好ましい実施態様においては、第2ラッチ部が、第1う
・ンチ部の係合面と係合するのに適した横に延びるエク
ステンション((^エクステンゾョン)備えている。
第2ラッチ部横エクステンションは、クロスバ−1およ
びこのクロスバ−を第2ラッチ部の残部に、該りl」ス
パーが第2ラッチ部の自由端にて長軸方向において11
11隔を11にるように、連結する連結手段とを1−え
得る。
両ハンドルをif 1m (li! lキするためのけ
り手段が、両ハンドルの後端を超えて後方に延びる各ラ
ッチ部からのエクステンションを漏え得る。この場合、
両エクステンンヨンのそれぞれの後端は解放可能に互い
に連結し合う(ル成になっている。
曲の実施態様においては、上記の1を勢手段が両部1]
間にて両ラッチ部から前方に延び、或はまた、それぞれ
の端においてスロットおよびタブによって、解放Of能
にUいに連結された仮バネを備えている。
上記M 1ラッチ部係合而に、1記第2ラッチ部の自由
端を1旨向するためのカム面および第2ラッチ部の自由
端を17持するためのステップとが備えられて良い、上
記1系合而はまた、解放手段を備えると良く、すなわち
、好ましい実施U 41においては、第1ラッチ部の測
方内へ(前方向に延びて、上記第2ラッチ部の上記自由
端の少なくとも一部を受は容れるためのスロットを備え
、これによって、ハンドル部が閉められる時に、第2ラ
ッチ部の自由端がスロットに入り、次いで、そこから1
uけ出るようLこ構成されている。
第1および第2ラッチ部が同一運動面内(こおいて弾力
Dr Irj性であり、そしてこの運動面が両ハンドル
の1軸面(こ関してf!々の適当な角度でもって方向付
けられて良い。
別の実施!!J様においては、両ハンドルをlj1間さ
せるへくけ勢するための上記の14訃手段が1.鉗子の
両部材1j:1(こ置かれる圧縮バネであり得る。
両ラッチ部は、バネ鋼で作られるのが好ましく、かつ各
へン1ニルの白銅の1&8ハに取り付けられるのが好ま
しい。
ラッチ機構がそのI!々の位置の間で移る度に、このラ
ッチ機構の動作は音や接触の18号によってニー11に
知らされる。
本発明による上述した及び曲の特徴、並びに利点は、I
r−ましい実施態様ににつき、添1:1図面を参!1q
シた以下の詳細な説明から明らかになるであろう。
[好ましい実施趨様の詳細な説明] 第1図において、前端部に顎14を、そして後に端B1
1(ごハンドル!6を有する第1部材12と、および航
端Al+C,:顎20を、そして後端部にハンドル22
を有する第2R1目418とを具備したi11子が図示
されている0両部材]2および】8は、ピボット点24
にて枢軸結合されている。
両顎14および20は、動脈Mクリップ2Gを+l! 
t+ −Jるよう特別に段!1されている。第1ラッチ
部30が適当な手段、好ましくは、ネジ32によって、
ハンドルIGのが1部内側34に取りト1けられている
。第2ラッチ部〔30が、a当な手段、好ましくは、ネ
ジ6/1によりてハンドル22萌部の内面36に取り1
1けられている。
第1および第2両ラッチ部30および60は、−片の串
バネ鋼であることが好ましいが、しかし第1および第2
両ラッチ部30および60が、同一平面において、かつ
好ましくは1両ハンドルIGおよび22の運動面におい
て(第1図参照)%或は両ハンドルのJ!S)1面に垂
直な平面(第5図および第6図参照)において可In弾
性となるのであれζJ、いかなる便宜な形状または適当
な弾)1胃A¥4で作られても良い。
図解したように、各ハンドル1Gおよび22は、各部ζ
オ】2および18の体81(からオフセラI−L、て、
両顎12および20の運動面が、両ハンドル16および
22の運動面から左6にオフセットした、外#−1器具
において、いわゆるバヨネ・ント・スタイルt++子と
して知られるものが++S成されることについて述べる
ことにするが、このオフセット・バヨネ・ント設!i1
は、この幡の!SRにとってI!!filであるが、本
質的なものではない。
第1ラッチ部30は、L字状で、そのL字のベース31
がハンドル1Gの後端に取りIJけられ、そしてL字の
シャフトがハンドル22に向かって突出し、特殊な輪郭
を有する1系合面3Gを形成している。1系合而36は
、第2図に示す力11而38を有し、そして好ましくは
、第1ラッチ部30の自由端にて直線11面になってい
る。係合面3Gのカム面38は、文、j向−4’4第2
ラッチ部60(後に説明する)の而と係合かつ反らせる
ためのいかなる適当な形状であっても良い。
係合面3Gは、また、シェルフ40(このりrましい実
施態ζ贋においては、通常、第1ラッチ部30の隣lI
R表面ζこ対して直角である)を備える。シェルフ40
の第1ラッチ部30の隣接表面とのなり角度は、ラッチ
機1ルの第2部600自山瑞62を侃持する、従って、
両へントルIGおよび22を第1予定4ri Rに1呆
侍するのに1・分であれは、いかなる適当な角度であっ
て良い、シェルフ110は、第2ラッチ部60の自由端
G2を留めるための成形体をなしている。
第1ラッチ部30の係合面3Gの片側で、かつシェルフ
710から上へ予め決められた距萬1において、LJJ
り込まれたスロ・ント42が形成されているが、これは
、パン1ル部16および22が閉められる時に、第2ラ
ッチR1560の自由端G2を、シェルフ40に留めら
れているIi2置か−5、両う・ンチ部30および60
とによって及ぼされる弾力[lこ、解放する手段として
役立つ、スロット42は、予電うッチ部30の片側に設
は得るが、また、第2ラッチ部60の自由端62が、ス
ロット42を通り1uけること(こよって、シェルフ4
0から^7放され得る限り、第1ランチ部30の「]】
間に設けても良い。
第2ラッチ部60は1部材18の内面35に沿って、り
fましくは、ハンドル22の後RIIで、ネジ手段64
(こJ、って固定されている。また、L字状で、そのし
字のベース(i Iが部材璽8に取り11けられ、そし
てL字のシャフトが第1ラッチ部30に向かって突出す
る。ざらに、その自111端G2は、横方向に延びる突
起6Gを備える。溝に延びる突起(以下では、(^突起
とする)66は、いかなる形状であっても良いが、第2
ラッチ部GOの後部68から延びるL字状突起で、この
L字状突起のクロスバ一部がIS突起6Gにλ4応し、
5字1に突起のシャフト70が第2ラッチ部60の後部
60から延びたものであることが好ましい、嬶突起66
は、第2ラッチ部60の片側から延びるものであっても
、また、第1ラッチ部30のカム而38およびシェルフ
40と適正に作用するものであれは、いかなる適当な角
度をも取り得る。
横突起66は、5字状である必要はなく、それが、必要
な114に、係合面3Gと(■互作用し、かつシェルフ
4゜およびスロット42に容易に入り待る117置に保
持されるIII?す、いかなる適当な形1λであ・って
も良い6例えは、シトフト70は、第2ラッチ部60の
横突起6Gと後部68との間で、適当な連絡体をなずな
らは、直線状の代わりにC字状、その曲のいかなる形状
であっても良い。
両ハンドル1Gおよび22は、両ラッチ部30および6
0から前方に延びる両板バネ突起80お82によって、
互いに真1間するように1付勢さ4Iるのが好ましい0
両板バネ1)0および82は、バネ鋼から、かつそれ等
の対応するラッチ部30および60と一体的に作られる
のが好ましい、仮バネ80は、その端近くにスロワl 
8 Gを、そして仮バネ82はその喘近くにタブ88を
有する。ス【コツI・8Gおよびタブ88は山部44’
 OOおよび口2を共侃持ずべく係合し結合されるが、
この結果、生しるバネ力によって両ハンドル1Gおよび
22は、それ等のtI8に予め決められただけの間隔を
取るべく11すされる。f(わりに、両板バネ80およ
び82は、ハンドル1Gおよび22より後方に延ばして
も良い。
両ハンドル1Gおよび22は、両部材12および10問
に圧縮バネまたはトーションバネを1個またはそれ以上
備えることによって、^f tljlするよう1こlす
拌さJLる。この場合、バネは、11に軸点24より、
いかなる後部に配置されても良いが、枢軸点24に近い
ところにするのが好ましく、そして41子100)枢軸
点によってobscureされるのが好ましい。
本発明によるラッチ機構の動作について以下に説明する
ことにする。
第2図に図解するように、両ハンドル1Gおよび22は
、画板バネ部材80および82によって付勢されるが、
これによって、両111子顎14および20は、両ラッ
チ部30才jよび60がta触しないで、かつ手術助手
が動脈瘤クリップ2Gを両i11子顎14.20内に挿
入し得るように、予め決められた間隔を取る0次いで、
手術[IJ+手がハンドル部16および22を閉めてい
くと、両う・フチ8ト30および60が係合する。さて
、第3回に図解するように、両ンドル部1Gおよび22
を閉めると、第2ラッチ部60のイ^突起6Gがカッ、
I?ii38と整合して係合する。
両ラッチ部30および60の弾力によって、両ラッチ部
;10および60の片方または両方が、通常、両へン1
ルI6および22の運動面に平1iな平面において反り
、この結果、横突起66が、第1ラッチ部30のカム而
38に沿って、次いで、係合面36に沿ってFSllJ
シ、ついにl#突起66がシェルフ40に乗るに至る。
このようになるや、音または接触による18号が発生さ
れることtこなる。
横突起66がシェルフ40上に留められた状態で、勤K
KJクリップ2Gが両顎14および2oに、動脈瘤クリ
ップ2Gに同等の作用を加えること無しに、堅<11!
持される6次いで、手術助手は、111子を外科医にに
手渡し、かくして、外科医は、&11子10および動脈
なりリップ2Gとを手術野りこ挿入し得る。外科医が、
ハンドル部1Gおよび22をさらに閉めると、クリップ
26の両顎が、当該の体部IQfl−囲むように11(
!かれて、夕日4医がハンドル部16および22をさら
に閉めると、横突起66は、係合面3Gに沿ってシェル
フ/10上に弾力的に+14勤し、結局、横突起66は
スロ・ソト42と整合するや、弾力により、そこを抜け
て外れる。かくして、両ラッチ部30および60は、そ
れ等の弾力作用のために、龍r+1保持され、その結果
、外科医がj壇りを緩めると、両板バネ8oおよび82
の作nlによって両ハンドル1Gおよび22がそれ等の
元のlid置に戻り、かくして、両鉗:f−vJ114
および20が開かれ、そしてクリップ26が当該の体部
1Ωにヒラ」・される。
当業者には自明のように、両鉗子顎の開始時の間隔は、
仮バネ部材80および82を調節することによって適正
に動制御され得る。このことは、これ等部暑Aが、清洗
やf9菌中に曲がったり、整合のずれたりした場合に、
ラッチ機構を適正に動作させるために、それ等を容易に
r+1整合さUることが可能であるからである。
クリップ26のセッI−後、外科医がクリップのIff
 fit %Fえまたは除去さえもを望んだI!合、そ
うすることは、ill子IOをり1開1a置から収り出
すこと無しに、容易りこ可能である0両鉗子顎14およ
び20の開いた状態にて、りlツブ2Gを挟み、横突起
6Gがシェルフ40に係合するまで閉められると、クリ
ップ2Gの両鉗子顎I4および20因に固定11!涛さ
れたことが外科医也ご指示される。
次いで、外科医は、位置替えのために、両ハンドル1G
および20を閉めてクリップ26の両顎を1m<、外+
i+ iは、クリップ26を完全に除去しようとTる1
8合、IQii替えの1合と同じ操作をtテった後、続
いて、クリップ2Gの両顎を、そのIn置する体部1i
2から取り出す0両ハンドル1(3,18をさらに閉め
ると、横突起G6がスロット42を通してリサイクルさ
れ、次いで、クリップ2Gの趨りが緩められる。さらL
こ、両ハンドル16および!!(が部分的に閉められる
と、横突起66がシェルフ40と係合する。外科医は、
クリップ26が両a11子顎1/l。
20に固定11!侍され、そしてクリップ2Gが閉じら
れることを知り、体部1aの内聞への起こり得る1目旧
を避けるために、クリップ26をその顎を閉じたままで
取り除くことがEl能である。
第5図および第6図に、本発明による別の実m 9洋を
図解した。第1ラッチ部130は、ハンドル1Gの前部
に覗り1;1けられ、ハンドル18へ向けて延び、係合
面136を有する。この係合面13Gは、カム面13[
1、シェルフ140,11数個の留めステップ141お
よびスロット142とからなっている。
第2ラッチ部1[30は、ハンドル18の後部に取り付
けられ、ハンドル16に向けて延び、そして通例り字状
で、そのシャフト]70および横突起16Gとからなる
L字状部を横える。
第1および第2両ラッチ部130および1(30はバネ
tmから作られ、そして同一面において弾力可10性で
あり(第5図および第6図を参照)1両ハンドル1Gお
よび18の1勤而に垂直に図示されている0両ラッチ部
+30および160の弾力可撓性の平面は、両ラッチ部
130およびl[30をそれ等の取付はネジ32および
6/lの周りに回転することによって、両ハンドル!6
および1Bの運動面に対していかなる適当な角度にもセ
ットシ得る。
両ハンドル16および18は、第1図に示した実施態I
屓の両板バネ80および82に類似の板バネによって、
或は第1図に示したと同様な圧縮バネ23によって第1
予定位置に保持される。
さて、次に、この実施B様の動作について説明すること
にする。ハンドル部が付勢バネ(図示使ず)の作用下に
離間した4kgにて、手術助手は、動脈瘤クリップ2G
を、第1図の実施a様にてなされたと同様に111子の
両顎内に挿入し得る0手11ii助手が、ハンドル部1
6および+8を閉めると、横突起1(3Gは、カム面1
38tこ接触するが、この接触の継続下では両ラッチ部
130および160が反ることになる。横突起IG[3
は、ハンドル部16および18が閉まって行くにつれて
、シェルフ140と係合することになる。かくして、手
術助手は811子を外+1医に手渡すことができ、外f
J医は、クリップ2Gが111子の両顎にしっかりと1
(!持されていることを$lIる。ラッチ機構、従って
、対応する!11子顎が祷数個の位置にセット可能であ
るように、種々ののステップ+41が形成されている。
外科医が、ハンドル部1Gおよび18をさらに閉めると
、横突起1(iGは、スロット142へ向かって動き、
両ラッチ部130および1(30の弾力可Inl’l:
の作用下にそこを抜けて外れ、かくして、ラッチtli
lltが解AYされ、そして外科医は、両ハンドル1G
および1B+ご月する趨りを解放して、ラッチをリサイ
クルすることが可能となる。
以上、本発明を好ましい実施a様について説明した。当
業者には、これ等実施B様について、多くの改変および
f更が本発明から逸脱しない限り、なされて良いことは
自明であろう、それ故、添付の請求の範囲に記載された
以外に本発明をFff定することを、像面するものでは
無い。
第1ラッチ部の上記係合面と係合するのに適した52起
をシ諷えたことを特徴とする請求の範囲第1Jjlに記
載の鉗貝。
α) 上記N1手段が、上記ラッチ部と一体で、かつ土
1a両ハンドル間にて前方に延びる。上記両ラッチ部の
追加部と;および 上記両うッテ靜それぞれの上記追加部の解放可能に共i
!枯された端部と; を嬉えたことを特徴とする請求の範IJI+第1 rH
に!L!社の器具。
(鷺)  上記両ノツチ胛それぞれのと12追加部を解
放fi■能に共連結するための手段が、上記間通加部の
一つの11部記載の器具。
a) 上記解放手段が上記ラッチ部の片側から該ラッチ
部に対して横方向に延びて、上!i!第2ラッチ86の
上記自由端の少なくとも一部を受は容れるためのスロー
/1・を」;記第璽ノツチ部係合面内に有し、 これにより、ハンドル部を閉めたと吉に、上記tf12
ラフテ靜の自由端がスロット内を通り1uけることを特
徴とする請求の1lllff+第1項に記載の鰭真。
む) 上記ラッチ111構が上記予定1α置に勤いたこ
とを1′&示1°る11号を与えるための手段を追加部
えたことを特徴とする請求のRIJII第1IJ′Iに
1こ軟のU具。
(遥) 上紀両ハンドルを第1装置に付勢するための上
1B手段が上記ラッチallの少なくとも一部と一体で
あることを特徴とする請求 (7>  上記付勢手段が、上記両ハンドルを財1ij
l保持ずるように付勢ずるために、上記部材間にて取り
付けられた少なくとも1個の圧縮バネを購えたことを特
徴とする請求の頼1用第1項に記載の2鴬貝。
([1)  上記第lラ・ソチ部が上記第1ハンドルの
i&端に取付けられ、そして上記第lラッチ部自山瑞が
上記第2ラッチ部の方向に延び: 上記第2ラッチ部が」二記第2ハンドルの前端にIIV
 I:rけられ、かつ上記第1ラ・ソチ部の方向に延び
る自由端を11:島え:並びに 上記ハンドル部が閉められる時、上記両ラツチ81《が
互いにII触する; ことを特徴とする請求の仙皿第1項に!L!駁の器具。
(9)上記ラッチ部がバネ鋼で作られたことを特i級と
ずる請求のn囲気1項に記載の器具。
lla)  上記1l41ラッチ部の係合面が、上記第
2ラッチ部と接触するためのカム面を嬬え、これ等のt
II′Iに動<40互作用によって上記両うッチ邸の片
方または両方の弾力による反りが起こることを特徴とす
る訴求の1![jTI第1頃に記載の!■貝。
θハ 上記留持成形体がシェルフを幅えることを特i2
1とする請求のjll回第1項に記載の器具。
(I2)上記留侍成形体がシェルフをI+*え;並びに
上記第1ラッチ部が、該第1う・ンチ81の片側がら横
方向に延びて、上記第2ラッチ部の上記自由端の少なく
とも一部を受は容れるためのスロットを上記第!ラッチ
8バ係合面因に有し; 上記第2ラッチ部の自由端が上記スロットを作力作用下
に通り1&けて、上記ラッチ1m横の係合が外れる前に
、上記ハンドルfi11が上記第1 Iff置から予め
決められた量だけ閉まるように、上記シェルフと上記ス
ロットとが予め決められた距離だけM間される; ことを特徴とする請求の[1711第■項に記献の上置
4、  Uf!J面の簡単な説明 第1図は、本発明によるI11子およびラッチ機構を図
解した図7″7.?、動脈層クリップがI11子の両顎
によってl18!持されており、Iff想線1、両鉗子
顎が閉まった時にクリップが開くのを示している;第2
図は、ラッチ機構の81G分才4現し1;第3図は、第
2図におけるラッチ機構の部分側面図;第4図は、第3
図に示したラッチ機構の部分積面図;第5図は、本発明
の改変実施態様の部分到面図;および第6図は、第6図
に示したラッチ機構の、第5図の(3−(3線に沿7た
部分噛面図である。

Claims (1)

  1. 【特許請求の範囲】 それぞれが前部において対向関係に配置された顎を有し
    、および後部において対向関係に配置されたハンドルを
    有する第1および第2両部材を備え、該両部材を、上記
    両ハンドル(ハンドル部)が互いに向かって閉められる
    ように枢軸結合させた鉗子型外科器具において、上記第
    1部材から延び、1平面において弾力可撓性である自由
    端を有し、さらに係合面を備えた第1ラッチ部と; 上記第2部材に取り付けられ、そして上記第1ラッチ部
    係合面との摺動係合に適した自由端を有する第2ラッチ
    部と; 上記ラッチ部係合面に形成されて、上記ハンドル部が第
    1予定位置にある時に、上記第2ラッチ部の上記自由端
    の少なくとも一部を受け容れ、かつ保持するための留持
    成形体と; 上記第2ラッチ部の上記自由端が、上記ハンドル部をさ
    らに閉める時に、上記係合面との係合から弾力作用下に
    抜け出るのを可能とする解放手段と; 両ハンドル間を離間保持するように付勢する付勢手段と
    ; を具備した器具。
JP2099112A 1989-04-14 1990-04-13 鉗子のための多点ラッチ機構 Pending JPH02286148A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/338,801 US5104397A (en) 1989-04-14 1989-04-14 Multi-position latching mechanism for forceps
US338801 1989-04-14

Publications (1)

Publication Number Publication Date
JPH02286148A true JPH02286148A (ja) 1990-11-26

Family

ID=23326227

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2099112A Pending JPH02286148A (ja) 1989-04-14 1990-04-13 鉗子のための多点ラッチ機構

Country Status (9)

Country Link
US (1) US5104397A (ja)
EP (1) EP0392547B1 (ja)
JP (1) JPH02286148A (ja)
AT (1) ATE132028T1 (ja)
AU (1) AU638983B2 (ja)
BR (1) BR9001744A (ja)
CA (1) CA2014574A1 (ja)
DE (1) DE69024396T2 (ja)
NZ (1) NZ233301A (ja)

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DE69024396D1 (de) 1996-02-08
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AU5324390A (en) 1990-10-18
US5104397A (en) 1992-04-14
NZ233301A (en) 1992-05-26
CA2014574A1 (en) 1990-10-14
BR9001744A (pt) 1991-06-04
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ATE132028T1 (de) 1996-01-15
EP0392547A1 (en) 1990-10-17

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