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US4046145A Expired / Lapsed US ⏱️ 0.0 years remaining

Syringe connector

Assignee: Baxter International Inc
•
Filing: 1976-06-29
•
Granted: 1977-09-06
•
Expires: 1996-06-29
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Abstract

Abstract A connector for joining a small dose syringe to a large reservoir syringe for filling the small dose syringe from the reservoir syringe. The connector has a tubular female-to-female coupler and there is a protector housing that is spaced radially outward from and extends forwardly beyond the coupler portion that attaches to the small dose syringe, thereby protecting this coupler portion from touch contamination. A removable closure with a recessed plug protects the small dose coupler portion from contamination when not in use.

Inventors

  • 👤 Pradip Vinobchandra Choksi
  • 👤 Walter Seemayer

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 08:05
CPC Classifications
A; A61; A61J; A61J1/00; A61J1/14; A61J1/20; A61J1/2096; A61J1/2003; A61J1/2079; A61J1/2086

Claims Analysis

Total Claims: 22
Claim 1
Independent Claim 96 words
A connector for transfer of medical fluids comprising: a tubular coupler having an outer surface and including a front attaching means and a rear attaching means; a protector housing secured to the coupler, said housing having a collar with an inner surface which is spaced radially outward from the coupler, and the collar extends beyond a forward end of the front attaching means to protect it from contamination; and said protector housing including a spacer means fixedly connected to both the collar and tubular adapter to maintain the spacial relationship between the collar and tubular coupler.
Claim 2
Dependent Claim 96 words
A connector for transfer of medical fluids comprising: a tubular coupler having an outer surface and including a front attaching means and a rear attaching means; a protector housing secured to the coupler, said housing having a collar with an inner surface which is spaced radially outward from the coupler, and the collar extends beyond a forward end of the front attaching means to protect it from contamination; and said protector housing including a spacer means fixedly connected to both the collar and tubular adapter to maintain the spacial relationship between the collar and tubular coupler.
Claim 3
Dependent Claim 19 words
A connector as set forth in claim 1, wherein the front attaching means is a female tapered tube section.
Claim 4
Dependent Claim 19 words
A connector as set forth in claim 1, wherein the rear attaching means is a female tapered tube section.
Claim 5
Dependent Claim 28 words
A connector as set forth in claim 3, wherein the rear attaching means includes one or more protruding ears for engaging with a Luer-lock collar of a syringe.
Claim 6
Dependent Claim 79 words
A connector for transfer of sterile medical liquids comprising: a tubular coupler with a front attaching means and a rear attaching means; a protector housing secured to the coupler, said housing having a collar which is spaced radially outward from the coupler and extends beyond a forward end of the front attaching means to protect it from contamination; and said housing includes a transverse wall secured to the tubular coupler and the collar is secured to said transverse wall.
Claim 7
Dependent Claim 79 words
A connector for transfer of sterile medical liquids comprising: a tubular coupler with a front attaching means and a rear attaching means; a protector housing secured to the coupler, said housing having a collar which is spaced radially outward from the coupler and extends beyond a forward end of the front attaching means to protect it from contamination; and said housing includes a transverse wall secured to the tubular coupler and the collar is secured to said transverse wall.
Claim 8
Dependent Claim 27 words
A connector as set forth in claim 1, wherein the collar has at least one flat area to prevent the connector from rolling on a flat surface.
Claim 9
Dependent Claim 23 words
A connector as set forth in claim 1, wherein the collar has a surface means to prevent slippage when grasped by an operator.
Claim 10
Dependent Claim 18 words
A connector as set forth in claim 7, wherein the surface means includes a series of longitudinal ribs.
Claim 11
Dependent Claim 21 words
A connector as set forth in claim 1, wherein the connector includes a removable closure for protecting the front attaching means.
Claim 12
Dependent Claim 29 words
A connector as set forth in claim 9, wherein the closure includes a handle protruding outwardly beyond the collar when such closure is attached to the front attaching means.
Claim 13
Dependent Claim 34 words
A connector as set forth in claim 9, wherein the front attaching means is a female tapered tube section, and the closure includes a tapered plug wedgingly fitted within this female tapered tube section.
Claim 14
Dependent Claim 43 words
A connector as set forth in claim 11, wherein the closure includes a skirt which is spaced radially outwardly from both the plug and female tapered tube section when the closure's plug is inserted and wedgingly fit to the female tapered tube section.
Claim 15
Dependent Claim 27 words
A connector as set forth in claim 12, wherein the skirt extends longitudinally beyond the plug, thereby reducing the chance of touch contamination of the closure's plug.
Claim 16
Dependent Claim 17 words
A connector as set forth in claim 1, wherein the tubular coupler has a filter secured therein.
Claim 17
Dependent Claim 101 words
A connector for transfer of medical fluids comprising: a tubular coupler with an internal front coupling bore and a rear attaching means; a protector housing having a collar spaced outward from the tubular coupler, and this collar has opposed external gripping surfaces separated by the distance that is at least three times the diameter of the internal front coupling bore; and these gripping surfaces extend beyond a forward end of the front attaching means; and said protector housing has spacer means fixedly connected to both the collar and tubular adapter to maintain the spacial relationship between the collar and tubular adapter.
Claim 18
Dependent Claim 101 words
A connector for transfer of medical fluids comprising: a tubular coupler with an internal front coupling bore and a rear attaching means; a protector housing having a collar spaced outward from the tubular coupler, and this collar has opposed external gripping surfaces separated by the distance that is at least three times the diameter of the internal front coupling bore; and these gripping surfaces extend beyond a forward end of the front attaching means; and said protector housing has spacer means fixedly connected to both the collar and tubular adapter to maintain the spacial relationship between the collar and tubular adapter.
Claim 19
Dependent Claim 46 words
A connector as set forth in claim 15, wherein the connector has an annular recess between the protector housing collar and tubular coupler of sufficient size to receive a Luer-lock collar of a syringe without interferring contact between such Luer-lock collar and the protector housing collar.
Claim 20
Dependent Claim 37 words
A connector as set forth in claim 15, wherein the tubular coupler has a forward end portion of a diameter that does not interfer with simple axial attachment and detachment of a syringe with a Luer-lock collar.
Claim 21
Dependent Claim 127 words
An assembly for transferring medical fluids comprising: a large reservoir syringe; a small dose syringe; and a connector joining said two syringes together; said connector including a tubular coupler and protector housing with a collar circumferentially spaced outwardly from a connecting joint between the small dose syringe and the tubular coupler, said protector housing extending forwardly beyond the tubular coupler's forward end to provide protection for such forward end during connection and disconnection of the small dose syringe; and said protector housing including a spacer means fixedly connected to both the collar and tubular adapter to maintain the spacial relationship between the collar and tubular adapter, whereby the chance of touch contamination of the coupler during connecting and disconnecting of the small dose syringe is substantially reduced.
Claim 22
Dependent Claim 127 words
An assembly for transferring medical fluids comprising: a large reservoir syringe; a small dose syringe; and a connector joining said two syringes together; said connector including a tubular coupler and protector housing with a collar circumferentially spaced outwardly from a connecting joint between the small dose syringe and the tubular coupler, said protector housing extending forwardly beyond the tubular coupler's forward end to provide protection for such forward end during connection and disconnection of the small dose syringe; and said protector housing including a spacer means fixedly connected to both the collar and tubular adapter to maintain the spacial relationship between the collar and tubular adapter, whereby the chance of touch contamination of the coupler during connecting and disconnecting of the small dose syringe is substantially reduced.

References Cited (Backward Citations)

US2342215A Cited
US2906300A Cited
US3610297A Cited
US3578037A Cited
US3729031A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-09-05 1981-03-07 1981-09-06 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-09-05 1985-03-07 1985-09-06 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-09-05 1989-03-07 1989-09-06 $7700.00 Window Closed / Lapsed

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