Patent ID: 8834450
Filing Date: 2014-09-16
Classification: A61M

Abstract:
1. A mucous suction device, comprising in combination: a) a longitudinally elongated, generally tubular, one-piece plastic body, b) said body having an axially elongated tapered first portion extending toward an inlet proximate one end of the body, c) said body having an axially elongated second portion extending toward an outlet proximate an opposite end of the body, d) radially outwardly extending annular retention rings on and integral with said body second portion, said rings having sharp annular peripheries and said rings being axially resiliently flexible and axially spaced apart, each ring having in an axially elongated direction a front flank and a back flank, and wherein for each pair of successive rings, the back flank of a relatively forward ring is everywhere spaced axially forwardly from the front flank of the next relatively rearward ring, whereby each ring is independently axially flexible, maintaining or enhancing the integrity of the sealing and anchoring function, the back flanks extend at angles α relative to the axially elongated direction and the front flanks extend at angles β relative to the axially elongated direction, and wherein β>α, and α>45°, and said second portion has a conical surface from which said rings project outwardly, the relatively forward ring flexed to greater extent than said next relatively rearward ring, each ring having outward projection substantially greater than the ring axial thickness everywhere between said conical surface and ring tips, the rings spaced apart along said conical surface and having peripheries progressively increasing in diameter at successive rings locations in said direction, whereby the rings sequentially have increasingly flexed positions, there being gaps formed between oppositely facing flanks of successive rings, said gaps extending outwardly adjacent said flanks and from said conical surface, the gaps having radially outward dimensions to the ring tips substantially greater than gap width nearest said conical surface of said body second portion, and including connector tubing having a bore received onto and over said body second portion, said bore having interference engagement with at least three of said rings, whereby said three rings are flexed axially at said peripheries thereof to establish annular seals, e) and there being body side porting between said body first and second portions, said side porting being manually controllable to control suction exertion, f) there being antimicrobial substance associated with body outwardly presented plastic surface extent at said first and second portions, said substance extending at and on and coating said rings and said ring sharp peripheries, to flex therewith, said substance extending in said gaps and coating said conical surface between successive rings.