Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
223 words
A surgical instrument for establishing circular coloanastomoses in a colonic lumen, comprising a cylindrical body having a mandrel at one end, a rod coaxially arranged in said mandrel and having a longitudinal axis, a circular knife attached to said rod, means for moving said rod along its longitudinal axis, a stem having a thrust head axially movable with respect to said rod, means for establishing circular anastomoses comprising two members, one said member located on said mandrel, a plurality of suturing elements attached to said one member adapted to move with the rod during the course of establishing circular anastomoses, the other said member located on the thrust head, wherein a portion of said circular anastomosing means located on said mandrel comprises two rings spaced apart from each other, said plurality of suturing elements equispaced circumferentially between said rings, said suturing elements comprising needles, shock absorbing means accommodated on at least one of said needles, and wherein the other said member of said circular anastomosing means comprises a third ring coupled to the thrust head and adapted to separate therefrom during the course of anastomosing, both of the members of said circular anastomosing means being joined together through said needles in the course of anastomosing and are adapted to remove in the colonic lumen until complete necrosis of a compressed colon portion occurs.
Claim 2
Dependent Claim
223 words
A surgical instrument for establishing circular coloanastomoses in a colonic lumen, comprising a cylindrical body having a mandrel at one end, a rod coaxially arranged in said mandrel and having a longitudinal axis, a circular knife attached to said rod, means for moving said rod along its longitudinal axis, a stem having a thrust head axially movable with respect to said rod, means for establishing circular anastomoses comprising two members, one said member located on said mandrel, a plurality of suturing elements attached to said one member adapted to move with the rod during the course of establishing circular anastomoses, the other said member located on the thrust head, wherein a portion of said circular anastomosing means located on said mandrel comprises two rings spaced apart from each other, said plurality of suturing elements equispaced circumferentially between said rings, said suturing elements comprising needles, shock absorbing means accommodated on at least one of said needles, and wherein the other said member of said circular anastomosing means comprises a third ring coupled to the thrust head and adapted to separate therefrom during the course of anastomosing, both of the members of said circular anastomosing means being joined together through said needles in the course of anastomosing and are adapted to remove in the colonic lumen until complete necrosis of a compressed colon portion occurs.
Claim 3
Dependent Claim
51 words
The surgical instrument of claim 1, wherein said third ring coupled to the thrust head, comprises a biologically inert polymer material, and at least three of said needles have annular recesses to engage with said third ring, while the thrust head diameter is smaller than the diameter of the circular knife.
Claim 4
Dependent Claim
16 words
The surgical instrument of claim 2, wherein the biologically inert polymer material comprises a fluorinated plastic.
Claim 5
Dependent Claim
38 words
The surgical instrument of claim 1, also provided with a spool which fits over said stem, said stem having an annular ridge for the spool to rest upon, said annular ridge being spaced apart from the thrust head.
Claim 6
Dependent Claim
120 words
The surgical instrument of claim 4, with means to place the spool in the colonic lumen, said means comprising a setting rod, two fixing elements attached to said setting rod, said fitting elements spaced apart from each other and held by a threaded joint, said fixing elements having the shape of two cone frustums arranged opposite each other, said cone frustums facing each other with their lesser bases, with the spool interposed between said fixing elements on the setting rod, one fixing element being mounted at one of the setting rod ends, while the other fixing element being mounted away from the end of the setting rod, said other fixing element having an axial opening adapted to accommodate said spool.