Device for establishing compression anastomoses

Claim 1

A device for establishing compression anastomoses comprising a first hollow tubular bush, having a flange at its distal end, a second bush slidable coaxially over said first bush and having a radially outward collar at its proximal end, means for coupling said bushes in their coaxial position, comprising a ring freely slidable coaxially over said second bush and having a circular edge at its distal end lying in opposition to said flange when said bushes are coupled, spring means arranged between said collar and said ring for normally biasing said ring distally, to cause said circular edge to press against said flange, and a conduit extending proximally from said second bush and having an elastic sheath extending distally fitting over the collar of said second bush and ring edge to be clamped between said ring edge and said flange, said conduit including a pair of tubes, the first of said tubes extending through said sheath in communication with the hollow tubular bush, the second of said tubes terminating exteriorly of said sheath, said flange of said first bush being introducable into the lumen of the distal section of the severed intestine, the second bush and ring being introducable into the lumen of the proximal section of the severed intestine with the attached conduit extending outward of said intestine through an oral opening and the bushes thereafter coupled together with the ends of the lumens compressed between the elastich sheath and said flange, to effect anastomosis, said device being removable from said intestine, after anastomosis, by withdrawal of said conduit through said oral opening.

Claim 2

A device for establishing compression anastomoses comprising a first hollow tubular bush, having a flange at its distal end, a second bush slidable coaxially over said first bush and having a radially outward collar at its proximal end, means for coupling said bushes in their coaxial position, comprising a ring freely slidable coaxially over said second bush and having a circular edge at its distal end lying in opposition to said flange when said bushes are coupled, spring means arranged between said collar and said ring for normally biasing said ring distally, to cause said circular edge to press against said flange, and a conduit extending proximally from said second bush and having an elastic sheath extending distally fitting over the collar of said second bush and ring edge to be clamped between said ring edge and said flange, said conduit including a pair of tubes, the first of said tubes extending through said sheath in communication with the hollow tubular bush, the second of said tubes terminating exteriorly of said sheath, said flange of said first bush being introducable into the lumen of the distal section of the severed intestine, the second bush and ring being introducable into the lumen of the proximal section of the severed intestine with the attached conduit extending outward of said intestine through an oral opening and the bushes thereafter coupled together with the ends of the lumens compressed between the elastich sheath and said flange, to effect anastomosis, said device being removable from said intestine, after anastomosis, by withdrawal of said conduit through said oral opening.

Claim 7

A device for establishing compression anastomoses comprising: a first hollow tubular bush having a flange at its distal end; a second bush slidable coaxially over said first bush and having a radially outward collar at its proximal end; means for coupling said bushes intheir coaxial position, including a ring freely slidable coaxially over said second bush and having a circular edge at its distal end lying in opposition to said flange when said bushes are coupled, spring means arranged between said collar and said ring for normally biasing said ring distally, to cause said circular edge to press against said flange, and a collet formed at the proximal end of said first bush adapted to engage over the proximal end of said second bush, said collet including a plurality of radial outwardly biased fingers each terminating in a flange for engaging over the proximal end of the radially outward collar to lock said first and second bushes together; and a conduit extending proximally from and in communication with said second bush; said flange of said first bush being introducable into the lumen of the distal section of the severed intestine, the second bush and ring being introducable into the lumen of the proximal section of the severed intestine with the attached conduit extending outward to said intestine through an oral opening and the bushes thereafter coupled together with the ends of the lumens compressed between said ring and said flange, to effect anastomosis, said device being removable from said intestine, after anastomosis, by withdrawal of said conduit through said oral opening.

Claim 8

A device for establishing compression anastomoses comprising: a first hollow tubular bush having a flange at its distal end; a second bush slidable coaxially over said first bush and having a radially outward collar at its proximal end; means for coupling said bushes intheir coaxial position, including a ring freely slidable coaxially over said second bush and having a circular edge at its distal end lying in opposition to said flange when said bushes are coupled, spring means arranged between said collar and said ring for normally biasing said ring distally, to cause said circular edge to press against said flange, and a collet formed at the proximal end of said first bush adapted to engage over the proximal end of said second bush, said collet including a plurality of radial outwardly biased fingers each terminating in a flange for engaging over the proximal end of the radially outward collar to lock said first and second bushes together; and a conduit extending proximally from and in communication with said second bush; said flange of said first bush being introducable into the lumen of the distal section of the severed intestine, the second bush and ring being introducable into the lumen of the proximal section of the severed intestine with the attached conduit extending outward to said intestine through an oral opening and the bushes thereafter coupled together with the ends of the lumens compressed between said ring and said flange, to effect anastomosis, said device being removable from said intestine, after anastomosis, by withdrawal of said conduit through said oral opening.