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AssigneeSmiths Medical International Limited
InventorsNeil Steven Veasey, Christopher John Woosnam, Andrew Thomas Jeffrey
Estimating the term…
A tracheostomy tube has a machine end coupling (2) of a relatively hard plastics and formed with a retaining ring structure formation (23) at its patient end. This is joined with a tubular shaft (1) of a softer plastics, such as silicone, to form a subassembly (7) y a moulded interconnection of the machine end of the shaft about the retaining formation (23). An enlarged boss (12) at the rear end of the shaft (1) forms a forwardly facing wall (15). The tube also includes a moulded neck flange (5) of a relatively soft plastics with a central collar (50) having an internal, rearwardly facing wall (59). The boss (12) on the subassembly (7) is bonded into the collar (5) with the wall (15) on the boss abutting the wall (59) on the flange (5).
1-11. (canceled)
A tracheostomy tube comprising a shaft for providing a gas passage to the trachea, a coupling for enabling gas connection with the shaft, and a flange for securing the tube with a patient's neck, characterised in that the coupling is of a harder material than the shaft, that the rear, machine end of the shaft is attached with the coupling by material of the shaft flowed around a retaining formation at the patient end of the coupling to form a subassembly by mechanical interlocking of the shaft with the coupling, that the external surface at the rear end of the subassembly is formed with an abutment surface facing towards the forward, patient end of the tube, and that the flange has an attachment portion with an abutment surface facing rearwardly, the abutment surface on the flange abutting the abutment surface on the subassembly so as to prevent forward movement of the subassembly relative to the flange.
A method of manufacturing a tracheostomy tube including the steps of:
A tracheostomy tube manufactured by the process of:
Dependencies are inferred from the claim text.