Multiple ligating clip applier instrument
First Claim
1. A medical instrument for applying ligating clips in rapid succession comprising:
- a scissors-type handle including;
a main handle body having a first side and an opposite side and having a first scissors handle at one end and an anvil jaw tip at the other end;
a movable jaw assembly disposed on said first side of said main handle body and including a movable jaw member pivotably attached to said main handle body and having a jaw tip and a movable handle operatively engaging said movable jaw member, said movable handle having a second scissors handle;
said main handle body including means on said opposite side for receiving a cartridge containing a number of clips aligned generally in a plane parallel to the plane of the instrument;
a feeding mechanism for operatively engaging said cartridge and disposed on said opposite side of main handle body for delivering successive clips from the cartridge to the jaw tips;
a first transmission mechanism disposed on said first side of said main handle body including a cam means operatively engaging said main handle body and said movable handle and further including a pusher link operatively engaging said cam means and said feeding means, said first transmission mechanism operative to convert a first portion of the pivotal motion of said second handle toward said first handle, as the user tightens the grip on said handles, to a long stroke linear motion for reciprocating said feeding mechanism longitudinally along said handle to said jaw tips, said first transmission mechanism permitting said feeding mechanism to dwell at a position removed from said jaw tips during the operation of a second transmission mechanism;
a second transmission mechanism on said main handle body including an extension arm integral with said movable jaw member and a closing link operatively engageable with said moving handle and said movable jaw member and synchronized with said first transmission mechanism for converting a second portion of the pivotal motion of said second handle toward said first handle to a rotary motion for closing said movable jaw tip toward said anvil jaw tip to set a clip about a vessel to be ligated while said first transmission mechanism constrains said feeding mechanism in the dwell mode.
1 Assignment
0 Petitions
Accused Products
Abstract
A multiple clip applier including a handle and a cartridge which holds a large number of ligating clips and which snaps into a cartridge-receiving channel on the handle. The handle operates like an elongated scissors with scissors handles at one end and jaws at the other to which clips may be delivered in rapid succession. Opening and closing the scissors handles operates the mechanism of the handle to open and close the jaws and to provide a long stroke motion for delivering clips from the end of the cartridge to the nose section. Clips may be indexed through the cartridge by reciprocating parts of the cartridge with respect to one another with a short stroke cocking motion captured from the long stroke delivery motion from a cooperating slot and pin mechanism. These two motions are accomplished within the envelope of motion of the normal opening and closing of the scissors handles to operate the jaws of the applier and to feed and index clips from the cartridge to the nose. The mechanism of the present invention permits the overall shape of the handle to be small, compact and readily adaptable for use even deep in an incision site.
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Citations
21 Claims
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1. A medical instrument for applying ligating clips in rapid succession comprising:
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a scissors-type handle including; a main handle body having a first side and an opposite side and having a first scissors handle at one end and an anvil jaw tip at the other end; a movable jaw assembly disposed on said first side of said main handle body and including a movable jaw member pivotably attached to said main handle body and having a jaw tip and a movable handle operatively engaging said movable jaw member, said movable handle having a second scissors handle; said main handle body including means on said opposite side for receiving a cartridge containing a number of clips aligned generally in a plane parallel to the plane of the instrument; a feeding mechanism for operatively engaging said cartridge and disposed on said opposite side of main handle body for delivering successive clips from the cartridge to the jaw tips; a first transmission mechanism disposed on said first side of said main handle body including a cam means operatively engaging said main handle body and said movable handle and further including a pusher link operatively engaging said cam means and said feeding means, said first transmission mechanism operative to convert a first portion of the pivotal motion of said second handle toward said first handle, as the user tightens the grip on said handles, to a long stroke linear motion for reciprocating said feeding mechanism longitudinally along said handle to said jaw tips, said first transmission mechanism permitting said feeding mechanism to dwell at a position removed from said jaw tips during the operation of a second transmission mechanism; a second transmission mechanism on said main handle body including an extension arm integral with said movable jaw member and a closing link operatively engageable with said moving handle and said movable jaw member and synchronized with said first transmission mechanism for converting a second portion of the pivotal motion of said second handle toward said first handle to a rotary motion for closing said movable jaw tip toward said anvil jaw tip to set a clip about a vessel to be ligated while said first transmission mechanism constrains said feeding mechanism in the dwell mode. - View Dependent Claims (20)
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2. A medical instrument for applying ligating clips in rapid succession comprising:
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a scissors-type handle including; a main handle body having a first side and an opposite side and having a first scissors handle at one end and an anvil jaw tip at the other end; a movable jaw assembly disposed on said first side of said main handle body and including a movable jaw tip and a movable handle operatively engaging said movable jaw tip, said movable handle having a second scissors handle; said main handle body including means on said opposite side for receiving a cartridge containing a number of clips aligned generally in a plane parallel to the plane of the instrument; a feeding mechanism for operatively engaging said cartridge and disposed on said main handle body for delivering successive clips from the cartridge to the jaw tips; a first transmission mechanism disposed on said first side of said main handle body and cooperating with said movable handle for converting a first portion of the pivotal motion of said second handle toward said first handle, as the user tightens the grip on said handles, to a long stroke linear motion for reciprocating said feeding mechanism longitudinally along said handle to said jaw tips, said first transmission mechanism permitting said feeding mechanism to dwell at a position removed from said jaw tips during the operation of a second transmission mechanism; a second transmission mechanism disposed on said first side of said main handle body and cooperating with said movable jaw assembly and synchronized with said first transmission mechanism for converting a second portion of the pivotal motion of said second handle toward said first handle to a rotary motion for closing said movable jaw tip toward said anvil jaw tip to set a clip about a vessel to be ligated while said first transmission mechanism contrains said feeding mechanism in the dwell mode; first bias means for said first transmission mechanism for biasing said scissors handles apart and for automatically restoring said scissors handles to an open position and for restoring said feeding mechanism to a forward position between said jaw tips when the user relaxes the grip on the scissors handle; and
,said first transmission mechanism incorporating a toggle action for increasing the force on said feeding mechanism as said ring handles approach their most opened position. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 21)
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12. A scissors-type medical instrument for applying a plurality of ligating clips comprising:
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a handle portion including; a main handle body having a scissors handle at one end and an anvil jaw at the other end; a movable jaw member pivotably attached to said main handle body having a movable jaw on one end disposed forward of said pivot point and in confronting relationship to said anvil jaw, and an extension arm on the other end extending rearwardly of said pivot point; a movable jaw closing link having a first end pivotably disposed on said main handle body at a point rearward of said movable jaw pivot point and extending forward into interfering relationship with said extension arm; a movable handle having a second scissors handle at one end and adapted to pivot about the same pivot point as said movable jaw member, said movable handle including a boss for engaging said movable jaw closing link when said movable scissors handle is closed toward the scissors handle on said main handle body; a first bias spring operatively disposed between said main handle body and said movable handle to bias said scissors handle open and to automatically return the scissors handles to the open position when the user relaxes the grip on the scissors handles; a second bias spring operatively disposed between said main handle body and the extension arm portion of said movable jaw member for biasing said jaws open to automatically return the jaws to the open position when the user relaxes the grip on said scissors handles; channel means longitudinally disposed on said main handle body for removably receiving a cartridge of clips; feeding means operatively associated with said cartridge receiving means and adapted for reciprocating motion longitudinally therealong for feeding clips to said jaws; and
,means on said handle synchronized with said jaw closing means for providing a long stroke motion to said feeding means. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A medical instrument for applying ligating clips in rapid succession comprising:
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a scissors-type handle including; a main handle body having a first scissors handle at one end and an anvil jaw tip at the other end; a movable jaw assembly disposed on said main handle body and including a movable jaw tip and a movable handle operatively engaging said movable jaw tip, said movable handle having a second scissors handle; said main handle body including means for receiving a cartridge containing a number of clips; a feeding mechanism for operatively engaging said cartridge and disposed on said main handle body for delivering successive clips from the cartridge to the jaw tips; a first transmission mechanism on said main handle body and cooperating with said movable handle for converting a first portion of the pivotal motion of said second handle toward said first handle, as the user tightens the grip on said handles, to a long stroke linear motion for reciprocating said feeding mechanism longitudinally along said handle to said jaw tips, said first transmission mechanism permitting said feeding mechanism to dwell at a position removed from said jaw tips during the operation of a second transmission mechanism; a second transmission mechanism on said main handle body and cooperating with said movable jaw assembly and synchronized with said first transmission mechanism for converting a second portion of the pivotal motion of said second handle toward said first handle to a rotary motion for closing said movable jaw tip toward said anvil jaw tip to set a clip about a vessel to be ligated while said first transmission mechanism constrains said feeding mechanism in the dwell mode; first bias means for said first transmission mechanism for biasing said scissors handles apart and for automatically restoring said scissors handles to an open position and for restoring said feeding mechanism to a forward position between said jaw tips when the user relaxes the grip on the scissors handle; and
,said first transmission mechanism incorporating a toggle action for increasing the force on said feeding mechanism as said ring handles approach their most opened position, said movable jaw assembly including; a movable jaw member pivotably attached to said main body and wherein said movable jaw tip is disposed on one end forward of said pivot point and in confronting relationship to sand anvil jaw and extension arm on the other end extending rearwardly of said pivot point; and
,a movable jaw closing link having a first end pivotably disposed on said main handle body at a point rearward of said movable jaw pivot point and extending forward into interfering relationship with said extension arms; said movable handle adapted to pivot about the same pivot point as said movable jaw member, said movable handle including a boss for engaging said movable jaw closing link when said movable scissors handle is closed toward the scissors handle on said main handle body.
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19. A medical instrument for applying ligating clips in rapid succession comprising:
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a scissors-type handle including; a main handle body having a first scissors handle at one end and an anvil jaw tip at the other end; a movable jaw assembly disposed on said main handle body and including a movable jaw tip and a movable handle operatively engaging said movable jaw tip, said movable handle having a second scissors handle; said main handle body including means for receiving a cartridge containing a number of clips including; a generally U-shaped channel having first and second side walls disposed on said main handle body and a base corresponding to a portion of said main handle body; a guide slot disposed longitudinally in said main handle body and aligned along a portion of said channel base; said feeding mechanism riding in said base and pin projecting through said guide slot into engagement with said first transmission mechanism; and
,a boss centrally disposed on the base of said channel; a feeding mechanism for operatively engaging said cartridge and disposed on said main handle body for delivering successive clips from the cartridge to the jaw tips; a first transmission mechanism on said main handle body and cooperating with said movable handle for converting a first portion of the pivotal motion of said second handle toward said first handle, as the user tightens the grip on said handles, to a long stroke linear motion for reciprocating said feeding mechanism longitudinally along said handle to said jaw tips, said first transmission mechanism permitting said feeding mechanism to dwell at a position removed from said jaw tips during the operation of a second transmission mechanism. a second transmission mechanism on said main handle body and cooperating with said movable jaw assembly and synchronized with said first transmission mechanism for converting a second portion of the pivotal motion of said second handle toward said first handle to a rotary motion for closing said movable jaw tip toward said anvil jaw tip to set a clip about a vessel to be ligated while said first transmission mechanism constrains said feeding mechanism in the dwell mode; first bias means for said first transmission mechanism for biasing said scissors handles apart and for automatically restoring said scissors handles to an open position and for restoring said feeding mechanism to a forward position between said jaw tips when the user relaxes the grip on the scissors handle; and
,said first transmission mechanism incorporating a toggle action for increasing the force on said feeding mechanism as said ring handles approach their most opened position.
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Specification