Male bayonet connector

Patent metadata

Field	Value
Publication number	US-9388929-B2
Application number	US-97692110-A
Country	US
Kind code	B2
Filing date	Dec 22, 2010
Priority date	Dec 9, 2009
Publication date	Jul 12, 2016
Grant date	Jul 12, 2016

Abstract

A male bayonet connector connects a section of tubing to a female latch connector. The male bayonet connector includes a shaft defining a lumen, a distal end portion, and a proximal end portion. The distal end portion of the shaft has a sealing surface configured to engage a seal member within the female latch connector to create a fluid-tight seal. The shaft defines an annular recess proximal to and adjacent the distal end portion. The annular recess has a proximal chamfered side wall and a distal sidewall perpendicular to the axis of the lumen, which are separated by a band of smaller diameter than the sealing surface. A grip is formed on the male bayonet connector between the proximal end portion and the annular recess. A ratio of a length of the first sealing surface to a distance between the grip and the distal sidewall is such that a side-load force, as imparted on the male bayonet connector, will not break a fluid-tight seal between the sealing surface and the seal member.

First claim

What is claimed is:

1. A male bayonet connector for connecting sections of tubing, the male bayonet connector comprising:
a first shaft including a first distal end portion, a first proximal end portion, and a first annular channel proximal to and adjacent the first distal end portion, a first lumen being defined between the first distal end portion and the first proximal end portion; and
a grip attached to at least a portion of the first shaft, wherein:
the first proximal end portion of the first shaft is configured to engage a first section of tubing;
the first distal end portion of the first shaft has a first sealing surface configured to engage a first inner surface of a female receiving structure to create a fluid-tight seal;
the first sealing surface has a constant diameter along a portion of its axial length and extends distally from the first annular channel; and
the first annular channel is defined by a first distal sidewall that is perpendicular with respect to an axis of the first lumen, a first proximal sidewall having a first beveled edge, and a first bottom region connecting the first distal sidewall and the first beveled edge, with the first bottom region being concentric and recessed radially inward with respect to the first sealing surface.

2. The male bayonet connector of claim 1 , wherein the first distal sidewall defines a surface for interfacing with a first latch structure within the female receiving structure so as to prevent removal of the male bayonet connector from the female receiving structure when the first latch structure engages the first annular channel.

3. The male bayonet connector of claim 1 , wherein the grip extends radially away from the first shaft so as to define a flange around the first shaft.

4. The male bayonet connector of claim 3 , wherein the flange defines an outer edge and the grip includes a plurality of indentations along the outer edge of the flange for facilitating gripping of the grip.

5. The male bayonet connector of claim 1 , wherein a ratio of an axial length of the first sealing surface to an axial distance between the first distal sidewall and the grip is between 0.889 and 1.105.

6. The male bayonet connector of claim 1 , wherein a surface of the first beveled edge defines an angle that is substantially 45 degrees with respect to an axis of the first lumen.

7. The male bayonet connector of claim 1 , wherein the grip is positioned to prevent further insertion of the first shaft into the female receiving structure.

8. The male bayonet connector of claim 1 , further comprising:
a second shaft including a second distal end portion, a second proximal end portion, and a second annular channel proximal to and adjacent the second distal end portion, a second lumen being defined between the second distal end portion and the second proximal end portion, wherein:
the second proximal end portion of the second shaft is configured to engage a second section of tubing;
the second distal end portion of the second shaft has a second sealing surface configured to engage a second inner surface of the female receiving structure to create a fluid-tight seal; and
the second sealing surface has a constant diameter along a portion of its axial length and extends distally from the second annular channel.

9. The male bayonet connector of claim 8 , wherein the grip connects the first and second shafts.

10. The male bayonet connector of claim 9 , wherein the grip extends away from the first shaft so as to define a first flange around the first shaft and extends away from the second shaft so as to define a second flange around the second shaft, and the first and second flanges are connected by a webbed portion therebetween.

11. The male bayonet connector of claim 10 , wherein the webbed portion defines a recessed area between the first and second flanges.

12. The male bayonet connector of claim 10 , wherein the grip defines a larger outer diameter than any other portion of the first or second shafts.

13. The male bayonet connector of claim 8 , wherein a distance between a first central axis of the first lumen and a second central axis of the second lumen is between 1.695 to 2.035 times the distance between the first distal sidewall and the grip.

14. The male bayonet connector of claim 8 , wherein the second annular channel is defined by a second distal sidewall that is perpendicular with respect to an axis of the second lumen, a second proximal sidewall having a second beveled edge, and a second bottom region connecting the second distal sidewall and the second beveled edge, with the second bottom region being concentric and recessed radially inward with respect to the second sealing surface.

15. The male bayonet connector of claim 14 , wherein:
a ratio of a first axial length of the first sealing surface to a first axial distance between the first distal sidewall and the grip is between 0.889 and 1.105; and
a ratio of a second axial length of the second sealing surface to a second axial distance between the second distal sidewall and the grip is between 0.889 and 1.105.

16. The male bayonet connector of claim 15 , wherein:
the first axial length and the second axial length are equivalent; and
the first axial distance and the second axial distance are equivalent.

17. The male bayonet connector of claim 14 , wherein:
a ratio of the axial length of the first sealing surface to a distance between the first distal sidewall and the grip is such that a side-load force of up to 10 lbs, as imparted on the male bayonet connector, will not break the fluid-tight seal between the first sealing surface and the first inner surface of the female receiving structure; and
a ratio of the axial length of the second sealing surface to a distance between the second distal sidewall and the grip is such that a side-load force of up to 10 lbs, as imparted on the male bayonet connector, will not break the fluid-tight seal between the second sealing surface and the second inner surface of the female receiving structure.

18. The male bayonet connector of claim 1 , wherein the grip extends at least a portion of the first shaft.

19. The male bayonet connector of claim 1 , wherein a ratio of the axial length of the first sealing surface to a distance between the first distal sidewall and the grip is such that a side-load force of up to 10 lbs, as imparted on the male bayonet connector, will not break the fluid-tight seal between the first sealing surface and the first inner surface of the female receiving structure.

20. A male bayonet connector for connecting sections of tubing, the male bayonet connector comprising:
a shaft comprising:
a distal end portion defining a sealing surface of constant diameter configured to engage a receiving portion of a female receiving structure;
a proximal end portion configured to engage a section of tubing; and
an annular channel proximal to and adjacent the distal end portion and recessed with respect to the diameter of the sealing surface,

the shaft further defining an axial lumen;
the annular channel further comprising:
a distal sidewall that is perpendicular with respect to an axis of the axial lumen;
a proximal sidewall having a beveled edge; and

a grip extending around at least a portion of the shaft wherein:
the sealing surface has a constant diameter along a portion of its axial length and extends distally from the distal sidewall of the annular channel; and
a ratio of an axial distance between the distal end portion to the distal sidewall and

Assignees

• Lewis Peter D
• Narayanan Ravikumar
• Cairns Richard W
• Phipps Riley M
• Nordson Corp

Inventors

• Lewis Peter D
• Narayanan Ravikumar
• Cairns Richard W
• Phipps Riley M

Classifications

• F16L37/56 Primary

  for double-walled or multi-channel pipes {or pipe assemblies} · CPC title

• F16L37/0841 Primary

  by means of a transversally slidable locking member surrounding the tube · CPC title

• A61B2562/225

  Connectors or couplings · CPC title

• A61B5/02141

  Details of apparatus construction, e.g. pump units or housings therefor, cuff pressurising systems, arrangements of fluid conduits or circuits (A61B5/02233, A61B5/0235 take precedence) · CPC title

• A61B5/02233

  Occluders specially adapted therefor (tourniquets A61B17/132) · CPC title