Surgical ligation and cutting device with safety means
First Claim
1. An apparatus for ligating and cutting body tissue comprising:
- means for ligating body tissue at two spaced apart locations with two plastic clips separated from a pair of clip trains;
means for cutting said body tissue between said spaced apart locations after said body tissue has been ligated by said ligating means, wherein said cutting means operates along a predetermined path in the apparatus;
pusher means for advancing said clip trains and for separating said clips from said clip trains; and
safety means responsive to said pusher means for preventing said cutting means from cutting said body tissue, wherein said safety means has a means for blocking said path when said safety means responds to said pusher means.
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Accused Products
Abstract
A surgical instrument for ligating and cutting body tissue restrained in the instrument is disclosed. To ligate the tissue, the instrument applies a pair of plastic clips at spaced apart locations on the tissue. The clips are advanced towards the tissue and separated from a pair of clip trains by a clip pusher mechanism operating over a predetermined path. A knife operating over another predetermined path then cuts the tissue between the spaced apart clips. A safety mechanism is actuated by the clip pusher mechanism in the event that a clip is not presented to the pusher mechanism. The safety mechanism, when actuated by the pusher mechanism, directly blocks the path of the knife. A latch mechanism is provided which locks tissue in the instrument to alert the surgeon that the pusher mechanism has jammed at the completion of a ligating and cutting operation.
1060 Citations
34 Claims
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1. An apparatus for ligating and cutting body tissue comprising:
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means for ligating body tissue at two spaced apart locations with two plastic clips separated from a pair of clip trains; means for cutting said body tissue between said spaced apart locations after said body tissue has been ligated by said ligating means, wherein said cutting means operates along a predetermined path in the apparatus; pusher means for advancing said clip trains and for separating said clips from said clip trains; and safety means responsive to said pusher means for preventing said cutting means from cutting said body tissue, wherein said safety means has a means for blocking said path when said safety means responds to said pusher means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A surgical apparatus for ligating and cutting organic tissue structures inserted into the apparatus comprising:
means for simultaneously applying two plastic clips around the tissue structure at two spaced apart locations to ligate the tissue structure at the location of the clips;
means for cutting the tissue structure between the clips after said tissue structure has been ligated, wherein said cutting means operates along a predetermined path in the apparatus; and
safety means responsive to said applying means for preventing operation of said cutting means, wherein said safety means has a means for blocking said path when said safety means responds to said applying means.- View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. An instrument for ligating and cutting body tissue having a proximal end and a distal end which comprises:
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a jaw means at the distal end of the instrument for receiving said body tissue; a first train of plastic clips extending from the jaw means towards the proximal end of the instrument; a second train of plastic clips spaced from said first train extending from the jaw means towards the proximal end of said instrument; a pusher means for advancing the distal most clip in each clip train into the jaw means to ligate said body tissue at spaced apart locations; a cutting means for dividing said body tissue between said spaced apart locations after it has been ligated, wherein said cutting means operates over a predetermined path in the instrument; a means located at the proximal end of the instrument for actuating said pusher means and said cutting means; and a safety means responsive to said pusher means for preventing operation of said cutting means, wherein said safety means has a means for blocking said path when said safety means responds to said pusher means. - View Dependent Claims (32, 33)
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34. A surgical instrument for ligating and cutting body tissue, having proximal and distal ends, comprising:
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actuating means at the proximal end of the instrument; restraining means at the distal end of the instrument; a cartridge connecting said actuating means and said restraining means; said actuating means including a handle and a trigger; said restraining means comprising two pairs of spaced apart jaws fixed to said cartridge and means for enclosing the space formed by each pair of jaws; said cartridge having two channels, each channel extending from the proximal end of the instrument to the distal end of the instrument and containing a train of plastic clips, each clip connected to the clips preceding and following it in the clip train; said cartridge also having a knife operating along a predetermind path between said clip trains; sequencing means connecting said actuating means with said restraining means and said cartridge for first moving said jaws towards said means for enclosing, then advancing the first clip in each clip train to said jaws so as to close each clip about tissue placed in the jaws and then cutting said tissue between said closed clips with said knife; and safety means responsive to said sequencing means for preventing the knife from cutting said tissue, wherein said safety means has a means for blocking said path when said safety means responds to said sequencing means.
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Specification