Intralumenal anastomosis surgical stapling instrument
First Claim
1. A surgical stapling instrument for the joining together of tubular body organs, said instrument having distal and proximal ends, said instrument comprising an elongated body, a staple carrier mounted on said body near said distal end of said instrument, at least one annular array of staples together with a staple driver for said at least one array of staples and a cylindrical scalpel being located in said staple carrier, said instrument having a conical anvil located at said distal end of the instrument beyond said staple carrier, an annular anvil plate for clinching the staples of said at least one array, said anvil plate being mounted on said anvil facing said staple carrier, said anvil being axially shiftable between a first position wherein said anvil plate is adjacent said staple carrier and a second position wherein said anvil plate is spaced from said staple carrier, means to shift said anvil, a staple driver actuator located within said instrument body, said staple driver actuator being axially shiftable between a retracted position and a staple driving position wherein said staple driver actuator contacts and shifts said staple driver driving said at least one array of staples from said staple carrier and against said anvil plate, means to shift said staple driver actuator, a scalpel actuator located within said instrument body, said scalpel actuator being shiftable between a retracted position and a scalpel driving position wherein said scalpel actuator contacts and shifts said cylindrical scalpel partway out of said staple carrier toward said distal end of said instrument, means to shift said scalpel actuator and including means to control the sequence of actuation of said anvil shifting means, said staple driver actuator shifting means, and said scalpel actuator shifting means to assure proper sequential operation of said instrument.
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Accused Products
Abstract
A surgical stapling instrument for the joining together of tubular body organs. The instrument comprises an elongated cylindrical body supporting at its distal end a staple carrier containing at least one annular array of staples, a staple driver for each array and a cylindrical scalpel. A conical anvil is located beyond the staple carrier at the distal end of the instrument body and carries an annular anvil plate for clinching the staples of the one or more arrays thereof. The anvil has an elongated shank extending within the instrument body. The anvil and its shank are shiftable axially of the instrument body by an anvil drive screw at the proximal end of the instrument between a position wherein the anvil plate is adjacent the staple carrier and a position wherein the anvil plate is spaced from the staple carrier. An elongated hollow staple driver actuator is located within the instrument body, surrounding the anvil shank and is axially shiftable between a retracted position and a staple driving position by a staple drive wheel located at the proximal end of the instrument. An elongated hollow scalpel actuator is located within the instrument body surrounding the staple driver actuator and is axially shiftable between a retracted position and a scalpel driving position by a scalpel drive wheel at the proximal end of the instrument. A series of latch means are provided so that the various components of the instrument, during the anastomosis steps, can be operated only at the proper time and in the proper sequence.
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Citations
17 Claims
- 1. A surgical stapling instrument for the joining together of tubular body organs, said instrument having distal and proximal ends, said instrument comprising an elongated body, a staple carrier mounted on said body near said distal end of said instrument, at least one annular array of staples together with a staple driver for said at least one array of staples and a cylindrical scalpel being located in said staple carrier, said instrument having a conical anvil located at said distal end of the instrument beyond said staple carrier, an annular anvil plate for clinching the staples of said at least one array, said anvil plate being mounted on said anvil facing said staple carrier, said anvil being axially shiftable between a first position wherein said anvil plate is adjacent said staple carrier and a second position wherein said anvil plate is spaced from said staple carrier, means to shift said anvil, a staple driver actuator located within said instrument body, said staple driver actuator being axially shiftable between a retracted position and a staple driving position wherein said staple driver actuator contacts and shifts said staple driver driving said at least one array of staples from said staple carrier and against said anvil plate, means to shift said staple driver actuator, a scalpel actuator located within said instrument body, said scalpel actuator being shiftable between a retracted position and a scalpel driving position wherein said scalpel actuator contacts and shifts said cylindrical scalpel partway out of said staple carrier toward said distal end of said instrument, means to shift said scalpel actuator and including means to control the sequence of actuation of said anvil shifting means, said staple driver actuator shifting means, and said scalpel actuator shifting means to assure proper sequential operation of said instrument.
Specification