Seton for treating fistulae, and a method of forming a closed loop of a seton
A size-adjustable seton ( 1 ) for treating fistulae ( 32 ) is provided with first and second wire ends ( 4, 6 ), which are provided with connecting means ( 8, 10 ) for, in a connected state, forming a smooth connection ( 12 ); in such a way, the seton ( 1 ) is a smooth, closed loop ( 3 ). The invention also relates to a method of forming the closed loop using the aforesaid seton ( 1 ), and a melt clamp ( 40 ) for use when placing the seton ( 1 ) in a person ( 30 ).
1. A seton for treating a fistula, comprising:
a wire having an elongate and flexible tubular structure on the order of ten times longer than it is wide, a first wire end, a second wire end and an inner surface extending in a longitudinal direction from a first wire end inner surface to a second wire end inner surface; and
a connection body including a first insertion portion having a first outer surface in the longitudinal direction of the wire at least partially conformed to the first wire end inner surface enabling a smooth connection in the longitudinal direction of the wire such that the seton becomes a smooth, closed loop.
2. The seton as set forth in claim 1 , wherein the connection body, the wire or both include a thermoplastic material for providing the smooth connection.
3. The seton as set forth in claim 1 , wherein the connection body, the wire or both include a light-curable material for providing the smooth connection.
4. The seton as set forth in claim 1 , wherein the connection body, the wire or both include a chemically-curable material for providing the smooth connection.
5. The seton as set forth in claim 1 , wherein the wire is formable in shape.
6. The seton as set forth in claim 1 , wherein the wire has a circular cross-section, with a wire diameter optionally in a range of 0.5 mm to 5 mm, and more optionally in a range of 1.5 mm to 2.5 mm.
7. The seton as set forth in claim 1 , wherein cutting of the wire to adjust wire length does not affect the smooth connection or the seton becoming the smooth, closed loop.
8. The seton as set forth in claim 1 , wherein the connection body is further provided with a second insertion part having a second outer surface in the longitudinal direction of the wire which is at least partially conformed to the second wire end inner surface recess to support the smooth connection in the longitudinal direction of the wire.
9. The seton as set forth in claim 8 , wherein the connection body between the first insertion part and the second insertion part comprises a transverse thickening.
10. The seton as set forth in claim 8 , wherein the connection body has a different color relative to one or more colors of the wire and the wire ends.
11. The seton as set forth in claim 1 , wherein the connection body provides an intermediate pin structure or plug structure, such that the first and second wire ends can connect with each other.
12. The seton as set forth in claim 1 , wherein the connection body is substantially shorter than the wire.
13. The seton as set forth in claim 12 , wherein the connection body has a length no more than half that of the wire.
14. The seton as set forth in claim 1 , wherein the wire and the connection portion provide a smooth connection in the longitudinal direction of the wire such that the seton becomes the smooth, closed loop with a substantially constant cross-section at the connection.