One-piece fluid suctioning device
A mucous suction device, comprising in combination, a longitudinally elongated, generally tubular, one-piece plastic body, the body having an axially elongated tapered, first portion extending toward an inlet proximate one end of the body, the body having an axially elongated second portion extending toward an outlet proximate an opposite end of the body, radially outwardly extending annular retention rings in said body second portion, said rings having sharp annular peripheries and said rings being axially resiliently flexible and axially spaced apart, and there being body side porting between said body first and second portions, said side porting being manually controllable to control suction exertion.
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 said body second portion, said rings having sharp annular peripheries and said rings being axially resiliently flexible and axially spaced apart,
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) the rings having outwardly tapering peripheries which progressively increase in diameter in a direction toward the body side porting,
g) the body second portion carrying the rings progressively increasing in diameter in said direction, whereby the rings project outwardly from the body side portion to substantially equal extents.
2. The combination of claim 1 wherein the body has a bore extending between said inlet and outlet, said bore having substantially constant diameter along entire body length.
3. The combination of claim 1 wherein said rings are axially flexible at said peripheries for establishing annular seals in response to axial reception of a connector tubing bore onto and over said body second portion.
4. The combination of claim 1 including a 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.
5. The combination of claim 3 wherein said body portion and said rings consist of molded plastic material.
6. The combination of claim 1 wherein said rings have front and back flanks, and wherein for each pair of successive rings, the back flank of one ring of the pair is everywhere spaced axially from the front flank of the other ring of the pair whereby each ring is independently axially flexible.
7. The combination of claim 5 wherein said body portions are translucent.
8. The combination of claim 1 wherein said inlet faces axially endwise.
9. The combination of claim 1 wherein said inlet faces sidewise relative to said body elongated second portion.
10. The combination of claim 9 wherein said inlet has elongated length l l in the length direction of said body elongated first portion, and has narrowed with w l along said length l l , and wherein l l >>w l .
11. The combination of claim 1 wherein the body has a mid-portion between said first and second portions, said side porting located at said body mid-portion, there being a sideward protrusion integral with said mid-portion, said protrusion defining a finger controllable air inlet in communication with said side porting.
12. The combination of claim 1 including a 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.
13. The combination of claim 1 wherein said rings have front and back flanks, and wherein for each pair of successive rings, the back flank of one ring of the pair is everywhere spaced axially from the front flank of the other ring of the pair whereby each ring is independently axially flexible.
14. The combination of claim 1 wherein said inlet faces axially endwise.
15. The combination of claim 1 wherein said inlet faces sidewise relative to said body elongated second portion.
16. The combination of claim 15 wherein said inlet has elongated length l l in the length direction of said body elongated first portion, and has narrowed with w l along said length l l , and wherein l l >>w l .
17. The combination of claim 16 wherein the body has a bore extending between said inlet and outlet, said bore having substantially constant diameter along entire body length.
18. The combination of claim 13 wherein 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.