Male bayonet connector

• US 9,388,929 B2
• Filed: 12/22/2010
• Issued: 07/12/2016
• Est. Priority Date: 12/09/2009
• Status: Active Grant

• Current Assignee: General Electric Company
• Original Assignee: Nordson Corporation
• Inventors: Lewis, Peter D., Narayanan, Ravikumar, Cairns, Richard W., Phipps, Riley M.
• Primary Examiner(s): BOCHNA, DAVID
• Application Number:
  US12/976,921
• Publication Number:
  US 20110204622A1
• Time in Patent Office: 2,029 Days
• Field of Search: 285/317, 285/308
• US Class Current: 1/1
• CPC Class Codes: A61B 2562/225 Connectors or couplings
• CPC Class Codes: A61B 5/02141 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 Class Codes: A61B 5/02233 Occluders specially adapted therefor tourniquets A61B17/132
• CPC Class Codes: A61M 2039/1027 Quick-acting type connectors
• CPC Class Codes: A61M 2039/1044 Verifying the connection, e.g. audible feedback, tactile feedback, visual feedback, using external light sources
• CPC Class Codes: A61M 2039/1083 having a plurality of female connectors, e.g. Luer connectors
• CPC Class Codes: A61M 2039/1088 having a plurality of male connectors, e.g. Luer connectors
• CPC Class Codes: A61M 39/1011 Locking means for securing connection; Additional tamper safeties A61M39/16 takes precedence
• CPC Class Codes: A61M 39/105 Multi-channel connectors or couplings, e.g. for connecting multi-lumen tubes multi-channel connectors in general F16L37/56
• CPC Class Codes: F16L 37/0841 by means of a transversally slidable locking member surrounding the tube
• CPC Class Codes: F16L 37/56 for double-walled or multi-channel pipes or pipe assemblies

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.

Claims

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 an axial distance between the distal sidewall and the grip is between 0.889 and 1.105.

21. A dual lumen male bayonet connector for connecting sections of tubing to a quick release coupler, the dual lumen male bayonet connector comprising:

a first shaft; and

a second shaft spaced apart from and connected to the first shaft,

each of the first shaft and the second shaft comprising;

a distal sealing portion defining a sealing surface configured to engage a receiving portion of a female receiving structure of the quick release coupler;

a proximal coupling portion configured to engage a section of tubing; and

an annular channel proximal to and adjacent the distal sealing portion,

each of the first shaft and the second shaft further defining an axial lumen;

the annular channel of each of the first shaft and the second shaft 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 bottom region connecting the distal sidewall and the beveled edge that is concentric with and of smaller diameter than the sealing surface,

wherein the sealing surface has a constant diameter along a portion of its axial length and extends distally from the annular channel.

22. The dual lumen male bayonet connector of claim 21, further comprising a webbed portion formed between the first shaft and the second shaft that connects the first shaft to the second shaft in parallel.

23. The dual lumen male bayonet connector of claim 22, wherein the webbed portion is proximal to the annular channel.

24. The dual lumen male bayonet connector of claim 22, wherein a ratio of an axial length of the sealing surface to an axial distance between the distal sidewall of the annular channel and the webbed portion is between 0.889 and 1.105.

25. The dual lumen male bayonet connector of claim 22, wherein a distance between central axes of the axial lumen of the first and second shafts is between 1.695 to 2.035 times the distance between the distal sidewall and the webbed portion.

26. The dual lumen male bayonet connector of claim 22, wherein a ratio of the axial length of the sealing surface to an axial distance between the distal sidewall of the annular channel and the webbed portion is such that a side-load force of up to 10lbs, as imparted on the dual lumen male bayonet connector, will not break a fluid-tight seal between the sealing surface and the receiving portion of the female receiving structure.

27. The dual lumen male bayonet connector of claim 21, further comprising a rib extending between the first shaft and the second shaft.