JP4902973B2 - Eap遮断ロックアウト機構を含む外科医器具 - Google Patents
Eap遮断ロックアウト機構を含む外科医器具 Download PDFInfo
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Description
図3‐図5に示されているように、反支持機構(anti-backup mechanism)250が、発射ストロークの合間に連結ラック200が引張り/圧縮・組合せばね184によって引き戻されるのを防止する。結合チューブ131が、その基端側及び先端側で発射ロッド32に連結され、発射運動が発射ロッド32に伝達される。ガイドポスト159は、結合スライドチューブ131の基端部分の横凹部133に係合している。リンク196a及び196bが、発射されると結合チューブ131の基端側に開口したキャビティ内に進入する。結合スライドチューブ131が、第1のリンク160aに当接し、発射ロッド32に連結され、発射運動を伝達する。発射ロッド32は、フレーム28の基端側から反支持プレート266の貫通孔408を通って基端側に延びている。貫通孔408は、直角に整合した時に発射ロッド32をスライド可能に受容し、傾くと引掛かる大きさである。下側タブ取付け部271が、フレーム28の基端部の下側リップから、反支持プレート266の下端部の開口269を貫通して基端側に延びている。この下側タブ取付け部271が、フレーム28に近接した反支持プレート266の下側部分を引き込み、発射ロッド32が先端側に移動する時に反支持プレート266が垂直になり、発射ロッド32を引き戻そうとすると、上部後方に傾いて引掛かる。先端側がフレーム28の基端部分によって拘束され、基端側が反支持プレート266の上部に当接した反支持圧縮ばね264が、反支持プレート266を固定位置に付勢している。
図1‐図5に示されているように、リンクトリガー自動引き戻し機構289が、完全な発射行程の最後でナイフを引き戻すために外科用ステープル止め/切断器具10に設けられている。このために、最も基端側のリンク196dが、閉止ヨーク162に形成されたラック通路291内に最も基端側のリンク196dが前進した時に上方に延出するタング290を含む。このタング290は、反支持解除レバー248の下部基端カム292に整合して作動させる。左右の半シェル156及び158に形成された構造が、反支持解除レバー248の移動を制限する。左右の半シェル156及び158の内部にそれぞれ形成されたピンソケット296及び丸ピン293が、下部基端カム292の先端側の反支持解除レバー248に形成された長手方向に細長い開口294内に受容され、これにより長手方向の移動と、丸ピン293及びピンソケット296を中心とした回動が可能となる。右半シェル156では、基端側に開口した通路295が、上方先端側に曲がった部分295bに連通した基端水平部分295aを含む。この先端側に曲がった部分295bが、反支持解除レバー248の基端部の近傍の右側後部ピン297を受容し、これにより反支持解除レバー248がその移動の最も先端側の部分に到達すると上方に回動される。反支持解除レバー248の基端側の右半シェル156に形成された遮断構造により、組み立てられて基端側に開口した通路295に右側後部ピン297が維持されるとその基端側への移動が防止される。
ハンドル20、特に連結ラック発射機構150が、前記した米国特許出願第11/052,387号に、例えば、連結ラックを断続的に移動させる側爪組立体の図面を参照して詳細に開示されている。しかしながら、図6に示されているように、側爪組立体285がEAPロックアウト機構199を含むように改良されている。具体的には、連結ラック発射機構150、具体的には、閉止ヨーク162、爪スライド(シャトル)270、及びリンク196a‐196dの改良により、バンパーばね201が、爪スライド270の垂直方向に開口した湾曲スロット203内に先端側が保持され、基端側の曲がった部分が爪スライド270の左側面に沿って延在している。それぞれのリンク196a‐196dは、その右側面の下部に沿って水平方向の凹部205を有する。この凹部205の連続的な接触面が、バンパーばね201により左側に付勢されて、連結ラック200の係合が解除される。閉止ヨーク162の右側に開口した水平スロット209に保持されたEAPブロックアクチュエータ207が、リンク196a‐196dの右側面に対して作動すると、連結ラック200が爪スライド270に近接してバンパーばね201が圧縮され、発射が可能となる。
電気活性ポリマー(EAPs)は、電圧が加えられると形状が変化する導電物質がドープされた一連のポリマーである。要するに、この導電ポリマーを、一定の形態のイオン流体またはゲル及び電極と組み合わせることができる。この流体/ゲルのイオンが電圧が加えられると導電ポリマーに対して移動し、このイオンの流れによりポリマーの形状が変化する。加える電圧は、使用するポリマー及びイオン流体によって1V〜4kVの範囲である。電圧が加えられると、ある種のEAPsは収縮し、別のEAPsは膨張する。EAPsをばねや可撓性プレートなどの機械手段に組み合わせて、電圧を加えてこれらを変形させることができる。
図2‐図5に示されているように、発射トリガー34が、ハウジング154に取り付けられた発射トリガーピン202を中心に回動する。発射トリガー34の上側部分204として示されている発射アクチュエータが、発射トリガー34がピストルグリップ36に向かって押し下げられると発射トリガーピン202を中心に先端側に移動し、基端側に配置された発射トリガー引張りばね206(図3)が伸長する。発射トリガー引張りばね206は、発射トリガー34の上側部分204とハウジング154との間に配置されている。発射トリガー34の上側部分204が、発射トリガーが押し下げられる度に、ばね付勢された側爪機構210によって連結ラック200に係合する。この側爪機構210はまた、発射トリガー34が解放されると、その係合を解放する。
図7‐図12に示されているように、側爪組立体285が発射をロックアウトする動作が示されている。具体的には、図7‐図9に示されているように、爪スライド270が、閉止ヨーク162と閉止ヨークレール276との間に長手方向にガイドされて横方向に拘束されている。バンパーばね201が、爪スライド270の左側及び連結ラック200の近接したリンク196aの水平凹部205まで横方向に延びて、この連結ラック200を閉止ヨーク162に形成されたラック溝291に沿って左側に付勢している。EAPブロックアクチュエータ207が、作動されていない時は横方向に収縮して閉止ヨークの右方向に開口した水平スロット209内に拘束されている。従って、発射トリガー34がそのリラックスした位置(図8)から押し下げられた位置(図12)まで引き下げられると、発射トリガー34の上部204が、爪ブロック318がリンク196aの基端右側に面したベベル面284に係合しないで爪スライド270を前進させる。従って、不所望の発射条件の場合に、下流に対してブロックすべき力が連結ラック200にかからない。
図13‐図15に示されているように、前記した外科用ステープル止め/切断器具と同一であるが、追加のEAPアクチュエータ612がハンドル20のハンドルハウジング654の左半シェル658の凹部614に受容された外科用ステープル止め/切断器具610に、代替の遮断ロックアウト機構600を設けることができる。左半シェル658は、閉止ヨーク162の左側面に形成された水平方向に細長い矩形開口669内をスライドする閉止ヨークガイドポスト659を含む。図14では、閉止ヨークガイドポスト659が矩形開口669の先端側に位置し、閉止ヨーク162が基端側に位置し、アンビル14が開いている。ガイドポスト659は内側に延出して結合チューブ131に係合している。結合チューブ131の基端側に開口したキャビティが、リンク196a及び196b(図15)を受容している。図14に示されているように、EAPアクチュエータ612が、横方向に延びた作動していない状態で、ガイドポスト659の後部の水平方向に細長い矩形開口669に係合している。従って、閉止ヨーク162が、その基端側の引き戻された位置に固定されている。図15では、EAPアクチュエータ612が作動して、閉止ヨーク162の矩形開口669から出て左側に収縮し、これにより閉止ヨーク162が先端側に前進してアンビル14が閉じている(図13‐図15には不図示)。
前記した米国特許出願第11/052,387及び同第11/052,632号に開示され、図3、図5、及び図16‐図21にも示されているように、外科用ステープル止め/切断器具10が、発射行程の表示、発射機構の手動の解放、及び手動の引き戻しを提供する手動引き戻し機構500を含む。歯車機構502が、発射行程の進行状態を表示し、かつナイフを手動で引き戻すことができる。前部遊び歯車220が連結ラック200(図3及び図18‐図20)の歯が付いた左上面222に係合する。前部遊び歯車220はまた、小さな右側ラチェット歯車231を有する後部遊び歯車230に係合する。前部遊び歯車220及び後部遊び歯車230はそれぞれ、前部遊び軸232及び後部遊び軸234によってハンドルハウジング154に回動可能に連結されている。後部軸232の両端部がそれぞれ、左ハウジング半シェル158及び右ハウジング半シェル156を貫通して、左インジケータゲージホイール40及び右インジケータゲージホイール41に取り付けられている。後部軸234がハンドルハウジング154内で自由に回動でき、後部歯車230にキー係合しているため、インジケータギアホイール40及び41が後部歯車230と共に回動する。連結ラック200と遊び歯車220と後部歯車230の歯車の関係は、歯の付いた上面222が、強度が適度となる歯の寸法を有し、後部歯車230が、連結された伝達発射機構150の完全な発射行程で1回転以上しないように有利に選択することができる。
図22及び図23に示されているように、EAPロックアウト機構550が、手動引き戻しレバー42’の改良されたハブ506’に有利に配置されている。上側凹部の先端面514’がEAPロック部材519の保持端部517を受容するスロット513を成し、上側凹部の基端面512’が、EAPロック部材519の自由端523に当接するロックプランジャー521を受容するアクチュエータ凹部527を成している。図22に示されているように、EAPロック部材519が作動していない場合は、反対側の圧縮ばね529がロックプランジャー521をアクチュエータ凹部527から先端側に付勢している。ロックプランジャー521が、L型ばねタブ522及び固定爪516を下側に押して右側の小さなラチェット歯車231に係合させ、発射を防止している。有利なことに、発射動作が別にロックアウトされていても、外科医が発射機構を引き戻すことができる。図23に示されているように、EAPロック部材519が作動して基端側に膨張し、ロックプランジャー521がアクチュエータ凹部の基端側に付勢され、固定爪516がL型ばねタブ522に対して押し上がり、発射が可能となる。
図24‐図28に示されているように、EAPロック機構800が、EAPロックアクチュエータ822を発射トリガー834の上端部804に形成された固定リッジ802に対して固定するようにハンドル20内に有利に配置されている。EAP固定アクチュエータ822は、ハンドルハウジング854に形成されたアクチュエータガイド835によって、下方やや先端側に移動できるように拘束されている。図24及び図25では、EAPアクチュエータ822は、アクチュエータ凹部835の上端部に保持された固定端部857及びアクチュエータピストン861に保持された移動端部859を有するEAP部材855から構成されている。EAP部材855を覆っている圧縮ばね863が、アクチュエータ凹部835の上端部に当接した上端部865及びアクチュエータピストン861に当接した下端部869を有する。硬い先端部865は、発射トリガー834の固定リッジ802に近接した凹面867に一致するようにアクチュエータピストン861の露出した端部に取り付けられている。EAP部材855は、図24及び図26に示されているように、通常は膨張して、硬い端部865が凹面867に当接して発射トリガー834の固定リッジ802の前方への回動を防止している。図25では、EAP部材855が収縮してアクチュエータピストン861、硬い端部865、及び圧縮ばね855が引き上げられ、発射トリガー834を押すことができる。
(1)外科器具であって、
細長いシャフトと、
運動のために前記細長いシャフト内に受容された制御部材と、
前記制御部材から受け取った制御運動に応答して作動するように機能的に構成されたエンドエフェクタと、
前記細長いシャフトの基端側に取り付けられた、外科的開口部を介して前記エンドエフェクタを配置するためのハンドルと、
運動のために前記ハンドルに取り付けられ前記制御部材に結合された、使用者の入力に対して制御運動を起こすべく第1の位置から第2の位置に移動するように機能的に構成された制御アクチュエータと、
イネーブル信号を生成するために機能的に構成された制御回路と、
前記第2の位置に移動するのを防止するために前記第1の位置で前記制御アクチュエータに接触してロックされるように付勢され、前記イネーブル信号に応答して前記制御アクチュエータから固定解除するように付勢された電動アクチュエータとを含むことを特徴とする外科器具。
(2)前記電動アクチュエータが電気活性ポリマー(EAP)アクチュエータを含むことを特徴とする実施態様(1)に記載の外科器具。
(3)前記制御アクチュエータがトリガーを含むことを特徴とする実施態様(1)に記載の外科器具。
(4)前記制御アクチュエータが、固定開口を含む長手方向に往復運動する部材を含み、
前記電動アクチュエータが、前記固定開口内に進入するようにばね付勢された固定ボルトを含むことを特徴とする実施態様(1)に記載の外科器具。
(5)前記電動アクチュエータが更に、前記固定開口から前記固定ボルトを引き戻すように機能的に構成された電気活性ポリマーを含むことを特徴とする実施態様(4)に記載の外科器具。
前記外科用器具が更に、ラチェット機構によって前記ラックに結合された手動引き戻しレバーを含み、
前記電動アクチュエータがラチェット動作を防止する爪ロックを含むことを特徴とする実施態様(1)に記載の外科器具。
(7)外科器具であって、
回動可能な対向したジョーを含むエンドエフェクタと、
前記エンドエフェクタに取り付けられた細長いシャフトと、
前記細長いシャフトによって受容され、前記エンドエフェクタを閉じるために前記エンドエフェクタに結合された往復運動部材と、
ハンドル部材とを含み、このハンドル部材が、
前記往復運動部材に連結された基端アクチュエータと、
前記基端アクチュエータにロックするように付勢された、運動のために前記ハンドルに取り付けられたロック部材と、
電気信号に応答して前記ロック部材のロックを解除するように前記基端アクチュエータに連結された電気活性ポリマーアクチュエータと、
前記電気信号を選択的に生成するように機能的に構成された回路とを含むことを特徴とする外科器具。
(8)前記回動可能な対向したジョーが、前記細長いシャフトに連結された下側ジョー及び回動可能に取り付けられた上側ジョーを含み、
前記往復運動部材が閉止チューブを含み、
前記基端アクチュエータが、前記閉止チューブを移動させるために結合された閉止ヨークを含み、
前記ロック部材が、前記閉止ヨークの先端側への移動を選択的に可能にするように機能的に構成されていることを特徴とする実施態様(7)に記載の外科器具。
(9)外科器具であって、
下側ジョー及び回動可能に取り付けられた上側ジョーを含むエンドエフェクタと、
前記下側ジョーに取り付けられた細長いシャフトと、
前記下側ジョー内に受容されたステープルカートリッジと、
前記ステープルカートリッジを横切るように位置する切断面を先端側に備えた、前記細長いシャフトに受容された発射部材と、
ハンドルとを含み、このハンドルが、
前記発射部材に結合された基端アクチュエータと、
前記基端アクチュエータにロックするように付勢された、運動のために前記ハンドルに取り付けられたロック部材と、
電気信号に応答して前記ロック部材のロックを解除するように前記基端アクチュエータに連結された電動アクチュエータと、
前記電気信号を選択的に生成するように機能的に構成された回路とを含むことを特徴とする外科器具。
(10)前記電動アクチュエータが電気活性ポリマーを含むことを特徴とする実施態様(9)に記載の外科器具。
(12)前記トリガーが発射トリガーを含むことを特徴とする実施態様(11)に記載の外科器具。
(13)前記トリガーが閉止トリガーを含むことを特徴とする実施態様(11)に記載の外科器具。
(14)前記基端アクチュエータが、一方向クラッチを介して前記発射部材に結合された引き戻しレバーを含み、
前記電動アクチュエータが、前記一方向クラッチをロックして前記発射部材の先端側への移動を防止するように機能的に構成されていることを特徴とする実施態様(9)に記載の外科器具。
(15)前記ハンドルの前記基端アクチュエータが更に、前記上側ジョーを前記下側ジョーに向かって閉じるように機能的に構成されており、
前記基端アクチュエータが前進して前記上側ジョーが閉じないと、前記発射部材の先端側への移動が防止されるため、前記基端アクチュエータをロックして発射を防止できることを特徴とする実施態様(9)に記載の外科器具。
(17)更に、ステープル止め装置の発射機構を電気的にロックを解除するための手段を含むことを特徴とする実施態様(9)に記載の外科器具。
12 ステープル止め組立体
14 アンビル
16 細長い溝
18 細長いシャフト
20 ハンドル
22 実施部分
24 閉止チューブ
26 閉止トリガー
28 フレーム
30 回動ノブ
32 発射ロッド
34 発射トリガー
36 ピストルグリップ
38 閉止解除ボタン
40、41 インジケータホイール
42、42’ 手動引き戻しレバー
131 結合スライドチューブ
150 連結ラック発射機構
154 ハンドルハウジング
156 右半シェル
158 左半シェル
159 ガイドポスト
160 閉止トリガー上側部分
162 閉止ヨーク
164 閉止リンク
174 圧縮ばね
184 引張り/圧縮・組合せばね
192 スチールバンド
196a‐196d リンク
200 連結ラック
201 バンパーばね
203 湾曲スロット
207 EAPブロックアクチュエータ
209 水平スロット
220 前部遊び歯車
230 後部遊び歯車
231 ラチェット歯車
246 閉止トリガー引張りばね
248 反支持解除レバー
256 反支持ヨーク
264 圧縮ばね
266 反支持プレート
269 開口
270 爪スライド
276 閉止ヨークレール
277 ラック溝カバー
278 圧縮ばね
280 フック
282 傾斜右側トラック
284 傾斜面
285 側爪組立体
318 爪ブロック
324 キックアウトブロック
330 爪ばね
334 リップ
336 リッジ
500 手動引き戻し機構
502 歯車機構
506、506’ ハブ
516 固定爪
519 EAPロック部材
521 ロックプランジャー
522 L型ばねタブ
524 ホールドアップ構造
530 右側湾曲リッジ
550、550’ EAPロックアウト機構
610 外科用ステープル止め/切断器具
612 EAPアクチュエータ
614 凹部
654 ハンドルハウジング
658 左半シェル
659 閉止ヨークガイドポスト
669 矩形開口
800 EAPロック機構
802 固定リッジ
822 EAPロックアクチュエータ
834 発射トリガー
855 EAP部材
861 アクチュエータピストン
863 圧縮ばね
865 先端部
867 凹面
Claims (13)
- 外科器具であって、
細長いシャフトと、
運動のために前記細長いシャフト内に受容された制御部材と、
前記制御部材から受け取った制御運動に応答して作動するように機能的に構成されたエンドエフェクタと、
前記細長いシャフトの基端側に取り付けられた、外科的開口部を介して前記エンドエフェクタを配置するためのハンドルと、
運動のために前記ハンドルに取り付けられ前記制御部材に結合された、使用者の入力に対して前記制御運動を起こすべく第1の位置から第2の位置に移動するように機能的に構成された制御アクチュエータであって、端部にリッジを備えたトリガーを含む、制御アクチュエータと、
イネーブル信号を生成するために機能的に構成された制御回路と、
前記第2の位置に移動するのを防止するために前記第1の位置で前記制御アクチュエータに接触してロックされるように付勢され、前記イネーブル信号に応答して前記制御アクチュエータからロック解除されるように付勢された電動アクチュエータと、
を含み、
前記電動アクチュエータが、膨張すると前記リッジに係合し、収縮すると前記リッジから係合解除される、前記ハンドル内に付勢された細長い部材を含む、外科器具。 - 前記電動アクチュエータが、電気活性ポリマー(EAP)アクチュエータである、請求項1に記載の外科器具。
- 前記細長い部材が、前記リッジに係合するようにばね付勢されている、請求項1に記載の外科器具。
- 前記細長い部材が、電気活性ポリマーを含む、請求項1に記載の外科器具。
- 前記細長い部材は、前記ハンドル内に形成されたガイド凹部によって長さ方向に移動できるように拘束されている、請求項1に記載の外科器具。
- 前記電動アクチュエータが、アクチュエータピストンを更に含み、
前記細長い部材は、前記ガイド凹部に保持された固定端部と、前記アクチュエータピストンに保持された移動端部とを有する、請求項5に記載の外科器具。 - 前記電動アクチュエータが、圧縮ばねを更に含み、前記圧縮ばねは、前記ガイド凹部に当接した一端部と、前記アクチュエータピストンに当接した他端部とを有する、請求項6に記載の外科器具。
- 前記電動アクチュエータが、前記トリガーのリッジに近接した凹面に一致するように前記アクチュエータピストンの端部に取り付けられている硬い先端部を更に含む、請求項7に記載の外科器具。
- 前記制御アクチュエータが更にラックを含み、
前記外科用器具が更に、ラチェット機構によって前記ラックに結合された手動引き戻しレバーを含み、
前記電動アクチュエータが更にラチェット動作を防止する爪ロックを含む、請求項1に記載の外科器具。 - 前記エンドエフェクタが、回動可能な対向したジョーを含み、
前記制御アクチュエータが、前記エンドエフェクタを閉じるための閉止トリガーを更に含む、請求項1〜9のいずれかに記載の外科器具。 - 前記回動可能な対向したジョーが、前記細長いシャフトに連結された下側ジョー及び回動可能に取り付けられた上側ジョーを含み、
前記制御部材が閉止チューブを含み、
前記制御アクチュエータが、前記閉止チューブを移動させるために結合された閉止ヨークを含み、
前記電動アクチュエータが、前記閉止ヨークの先端側への移動を選択的に可能にするように機能的に構成されているロック部材を更に含む、請求項10に記載の外科器具。 - 前記下側ジョー内に受容されたステープルカートリッジを更に含み、
前記制御部材が、前記ステープルカートリッジを横切るように位置する切断面を先端側に備えた、前記細長いシャフトに受容された発射部材を更に含む、請求項11に記載の外科器具。 - 前記リッジを備えたトリガーが発射トリガーである、請求項12に記載の外科器具。
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Application Number | Priority Date | Filing Date | Title |
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US59169404P | 2004-07-28 | 2004-07-28 | |
US60/591,694 | 2004-07-28 | ||
US11/157,767 US7143925B2 (en) | 2004-07-28 | 2005-06-21 | Surgical instrument incorporating EAP blocking lockout mechanism |
US11/157,767 | 2005-06-21 |
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JP2006034980A JP2006034980A (ja) | 2006-02-09 |
JP4902973B2 true JP4902973B2 (ja) | 2012-03-21 |
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JP2005217080A Expired - Fee Related JP4902973B2 (ja) | 2004-07-28 | 2005-07-27 | Eap遮断ロックアウト機構を含む外科医器具 |
Country Status (7)
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US (1) | US7143925B2 (ja) |
JP (1) | JP4902973B2 (ja) |
CN (11) | CN1732859B (ja) |
BR (2) | BRPI0503039A (ja) |
CA (1) | CA2512977C (ja) |
MX (1) | MXPA05008046A (ja) |
RU (2) | RU2005123961A (ja) |
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CA2512977C (en) | 2014-12-09 |
BRPI0503041A (pt) | 2006-03-14 |
CN1732856A (zh) | 2006-02-15 |
CN1745720B (zh) | 2010-12-15 |
CN100515349C (zh) | 2009-07-22 |
CN1726876A (zh) | 2006-02-01 |
CN1726878A (zh) | 2006-02-01 |
CN1745719A (zh) | 2006-03-15 |
CN1745720A (zh) | 2006-03-15 |
CN1732859A (zh) | 2006-02-15 |
CN1726874A (zh) | 2006-02-01 |
CN100566667C (zh) | 2009-12-09 |
CN100579467C (zh) | 2010-01-13 |
CN100579470C (zh) | 2010-01-13 |
CN100479769C (zh) | 2009-04-22 |
RU2005123979A (ru) | 2007-02-10 |
BRPI0503039A (pt) | 2006-03-14 |
JP2006034980A (ja) | 2006-02-09 |
CA2512977A1 (en) | 2006-01-28 |
US20060022015A1 (en) | 2006-02-02 |
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