초록 ▼

A flexible metal tube with closed section and a flexible pipe comprising such a metal tube, comprising a strip with substantially constant thickness and wound helically around an axis, the strip includes at least a closed section having walls formed by portions of a common turn of the strip, the clo

A flexible metal tube with closed section and a flexible pipe comprising such a metal tube, comprising a strip with substantially constant thickness and wound helically around an axis, the strip includes at least a closed section having walls formed by portions of a common turn of the strip, the closed section includes an upper wall and a lower wall and the section is arranged at one end of said strip while the other end terminates in a free edge. The closed section is trapezoidal in cross-section. A bulge radially oriented towards the upper wall of the closed section is provided between the closed section and the free edge of the stirrup. The invention is in particular applicable to flexible tubular pipes.

대표청구항 ▼

A flexible metal tube with closed section and a flexible pipe comprising such a metal tube, comprising a strip with substantially constant thickness and wound helically around an axis, the strip includes at least a closed section having walls formed by portions of a common turn of the strip, the clo

A flexible metal tube with closed section and a flexible pipe comprising such a metal tube, comprising a strip with substantially constant thickness and wound helically around an axis, the strip includes at least a closed section having walls formed by portions of a common turn of the strip, the closed section includes an upper wall and a lower wall and the section is arranged at one end of said strip while the other end terminates in a free edge. The closed section is trapezoidal in cross-section. A bulge radially oriented towards the upper wall of the closed section is provided between the closed section and the free edge of the stirrup. The invention is in particular applicable to flexible tubular pipes. ement). Finis, Inc., "Fin Swimming for Recreation, Fitness, Swimming Development and Competitions--The Swimmer's Snorkel" Internet Web Site Page http://www.finis-net.com/snorkel.htm. European Patent Office Communication and Search Report dated Feb. 15, 2002. o the patient's airway to allow insertion of an endotracheal tube along the guide and through the patient's larynx, said guide having a distal opening defining an axis for advancing an endotracheal tube beyond the guide, and a proximal opening remaining outside the patient's mouth after insertion of the guide; and a laryngeal mask surrounding the distal opening of the guide to substantially seal the patient's glottis about the distal opening of the guide and substantially seal the patient's esophageal opening, said laryngeal mask having: (a) a support member extending from the outer curvature at the distal end the guide in a direction substantially parallel to and offset from the axis of the distal opening of the guide, and having a tip extending into the patient's esophagus; (b) a protrusion from the inner curvature at the distal end of the guide to push against the patient's vallecula and thereby lift the patient's epiglottis from the patient's glottis as the guide is inserted into the patient's laryngopharynx; (c) a lower portion extending from the support member that is shaped to substantially block the patient's esophagus below the patient's glottis and align the distal opening of the guide with the patient's glottis as the guide is advanced along the patient's airway; (d) an upper portion extending from the support member and surrounding the distal opening of the guide to substantially fill the patient's laryngopharynx adjacent to the patient's glottis; and (e) opposing side portions to pinch the patient's epiglottis and thereby lift the epiglottis from the glottis, so that the distal opening of the guide is axially aligned with and abuts the patient's glottis on end as the guide is advanced along the patient's airway and is sealed in fluid communication with the patient's glottis, thereby enabling an endotracheal tube to be advanced axially from the distal opening of the guide into the patient's trachea; and a ventilation attachment removably attachable to the proximal opening of the guide, having a ventilation port to supply air/oxygen through the guide during insertion of an endotracheal tube along the guide. 11. The laryngeal mask airway of claim 10 wherein the ventilation attachment further comprises: a passageway aligned with the guide allowing insertion of an endotracheal tube; and a ventilation port allowing air/oxygen to be supplied through the passageway and guide as the endotracheal tube is inserted. 12. The laryngeal mask airway of claim 11 wherein the ventilation attachment further comprises a rotatable collar surrounding the passageway allowing the ventilation port to be rotated to any desired orientation about the ventilation attachment. 13. The laryngeal mask airway of claim 11 wherein the ventilation attachment further comprises a seal ring within the passageway providing a seal around the endotracheal tube as the endotracheal tube is inserted through the ventilation attachment to prevent air/oxygen from escaping from within the passageway but allowing the endotracheal tube to be advanced through the ventilation attachment. 14. The laryngeal mask airway of claim 10 wherein the laryngeal mask is inflatable. 15. A laryngeal mask airway comprising: a curved tubular guide for insertion through a patient's mouth and into the patient's airway and allowing insertion of an endotracheal tube through the guide, said guide having a distal opening defining an axis for advancing an endotracheal tube beyond the guide, and a proximal opening remaining outside the patient's mouth after insertion of the guide; a support member extending from the outside curvature of the guide at the distal opening of the guide in a direction substantially parallel to, and offset from the axis of the distal opening of the guide; a laryngeal mask surrounding the support member and distal opening of the guide to substantially seal the patient's glottis about the distal opening of the guide and axially align the distal