Tracheostomy Tube Assembly
The invention concerns a tracheostomy tube assembly for insertion into the trachea of a patient to support breathing, said assembly comprising an outer cannula ( 1 ) having a distal end ( 10 ) and a first connector end ( 11 ) with first connector means; an insertion member ( 2, 3 ) for insertion into the outer cannula ( 1 ) and a second connector end ( 21, 31 ) provided with second connector means, said second connector means cooperating with said first connector means for locking said insertion member ( 2, 3 ) in the outer cannula ( 1 ); wherein a swivel locking member ( 4 ) is retained on the second connector end ( 21, 31 ) of the insertion member ( 2, 3 ) so that the swivel locking member ( 4 ) extend around a portion of the first connector end ( 11 ), and said lock member ( 4 ) being provided with internal engagement means ( 40, 41 ), which is adapted to cooperate with corresponding first engagement means ( 42, 43 ) provided on the external surface ( 44 ) of the first connector end ( 11 ).
1 . A tracheostomy tube assembly for insertion into the trachea of a patient to support breathing, said assembly comprising:
an outer cannula having a distal end and a first connector end with first connector means;
an insertion member for insertion into the outer cannula and having a second connector end provided with second connector means, said second connector means cooperating with said first connector means for locking said insertion member in the outer cannula; and
a swivel locking member retained on the second connector end of the insertion member so that the swivel locking member extends around a portion of the first connector end, and said swivel locking member being provided with internal engagement means adapted to cooperate with corresponding first engagement means provided on the external surface of the first connector end.
2 . The tracheostomy tube assembly according to claim 1 , wherein said outer cannula is provided with a flange at said first connector end.
3 . The tracheostomy tube assembly according to claim 1 , wherein said insertion member is provided with an annular collar for limiting the axial movement of the swivel locking member.
4 . The tracheostomy tube assembly according to claim 3 , wherein said insertion member is provided with an adaptor sleeve for retaining the swivel locking member on said second connector end of the insertion member.
5 . The tracheostomy tube assembly according to claim 1 , wherein the first engagement means comprise at least one groove in the surface of the first connector end of the inner cannula and that the internal engagement means of the swivel locking member comprise at least one protrusion for engaging said at least one groove and a retention collar for abutting an annular collar on the insertion member for retaining the insertion member in the outer cannula.
6 . The tracheostomy tube assembly according to claim 5 , wherein said grooves comprises an axially oriented groove followed by an annular groove.
7 . The tracheostomy tube assembly according to claim 5 , wherein a treated portion provides said at least one groove.
8 . The tracheostomy tube assembly according to claim 1 , wherein the internal engagement means of the swivel locking member comprise at least one groove and a retention collar for abutting an annular collar on the insertion member and said at least one groove is adapted to cooperate with the first engagement means, which comprise at least one protrusion for engaging said at least one groove, for retaining the insertion member in the outer cannula.
9 . The tracheostomy tube assembly according to claim 8 , wherein a treated portion provides said at least one groove.
10 . The tracheostomy tube assembly according to claim 8 , wherein said grooves comprises an axially oriented groove followed by an annular groove.
11 . The tracheostomy tube assembly according to claim 1 , wherein said insertion member is an obturator.
12 . The tracheostomy tube assembly according to claim 1 , wherein said insertion member is an inner cannula.
13 . The tracheostomy tube assembly according to claim 1 , wherein the outer cannula is provided with an integral flange.
14 . The tracheostomy tube assembly according to claim 8 , wherein the integral flange is connected to the outer cannula by two lateral, flexible link portions.
15 . The tracheostomy tube assembly according to claim 13 , wherein the integral flange is provided with large areas of openings for skin oxygenation.
16 . The tracheostomy tube assembly according to claim 1 , wherein the outer cannula is moulded in a plastic material with a hardness of 65-85 Shore A.
17 . The tracheostomy tube assembly according to claim 16 , wherein said material is medical grade PVC.
18 . The tracheostomy tube assembly according to claim 16 , wherein said material is compounded with a radio-opaque material.
19 . The tracheostomy tube assembly according to claim 17 , wherein said material is at least translucent.
20 . The tracheostomy tube assembly according to claim 19 , wherein said material is transparent.