US5437650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Securing collar for cannula connector
Assignee: Hospira Inc
•
Filing: 1995-01-11
•
Granted: 1995-08-01
•
Expires: 2015-01-11
Abstract
Abstract A securing collar is used in combination with two tubular flow connectors to prevent the inadvertent disconnection of I.V. tubing sets. The securing collar includes a housing supported by one of the connectors, a radial flange extending from the housing, a tubular collar having a outwardly splayed end, at least two notches that separates the splayed collar into at least two elongated segments, a transition portion on the exterior of the collar, and a sliding annular locking ring. The locking ring slides on the collar from the proximal end over the transition portion to the distal segments so that the annular locking ring forces the splayed and segmented distal portions radially inward to grip the second connector.
Inventors
- 👤 Mark E. Larkin
- 👤 Dvid E. Kramer
- 👤 Warren P. Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:54
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/04; A61M39/045; A61M39/10; A61M39/1011; A61M2039/1027; A61M2039/1072; Y; Y10; Y10S; Y10S604/00; Y10S604/905
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
338 words
A securable collar assembly for use with a fluid connector having an axially forward extending cannula for securably connecting the fluid connector to a tubular conduit having a septum at a terminal end and a radial shoulder proximate the septum, the collar assembly comprising: a tubular housing axially engaged with the fluid connector so that the cannula of the fluid connector extends axially forward from the housing; a generally radially extending, resiliently deflectable flange extending from the housing; a hollow generally cylindrical collar extending longitudinally from the flange and coaxially with the cannula to an open forward end; the hollow collar having an inner surface defining a bore for receiving the terminal end of the tubular conduit and a radially inward extending lip on the inner surface of the collar at the open forward end of the collar; the collar having an outer surface including a first portion adjacent the flange having a first maximum diameter and a second portion between the first portion and the open end of the collar having a second minimum diameter which is larger than the first maximum diameter; the collar having two diametrically opposed notches, each notch extending longitudinally rearward from the open forward end of the collar through the first and second portions of the collar to a notch closed end adjacent the flange so as to divide the collar into two longitudinal semi-cylindrical segments; and a ring longitudinally slidable along the outer surface of the collar from a first rear position on the first portion to a second forward position on the second portion, the ring having an inner diameter which is smaller than the second minimum diameter of the collar so as to compress the outer surface of the second portion when the ring is slid to the second forward position so as to pivot the two longitudinal segments of the collar radially inward at the deflectable flange so that the inward lip at the open forward end of the collar engages the radial shoulder of the tubular conduit.
Claim 2
Dependent Claim
338 words
A securable collar assembly for use with a fluid connector having an axially forward extending cannula for securably connecting the fluid connector to a tubular conduit having a septum at a terminal end and a radial shoulder proximate the septum, the collar assembly comprising: a tubular housing axially engaged with the fluid connector so that the cannula of the fluid connector extends axially forward from the housing; a generally radially extending, resiliently deflectable flange extending from the housing; a hollow generally cylindrical collar extending longitudinally from the flange and coaxially with the cannula to an open forward end; the hollow collar having an inner surface defining a bore for receiving the terminal end of the tubular conduit and a radially inward extending lip on the inner surface of the collar at the open forward end of the collar; the collar having an outer surface including a first portion adjacent the flange having a first maximum diameter and a second portion between the first portion and the open end of the collar having a second minimum diameter which is larger than the first maximum diameter; the collar having two diametrically opposed notches, each notch extending longitudinally rearward from the open forward end of the collar through the first and second portions of the collar to a notch closed end adjacent the flange so as to divide the collar into two longitudinal semi-cylindrical segments; and a ring longitudinally slidable along the outer surface of the collar from a first rear position on the first portion to a second forward position on the second portion, the ring having an inner diameter which is smaller than the second minimum diameter of the collar so as to compress the outer surface of the second portion when the ring is slid to the second forward position so as to pivot the two longitudinal segments of the collar radially inward at the deflectable flange so that the inward lip at the open forward end of the collar engages the radial shoulder of the tubular conduit.
Claim 3
Dependent Claim
33 words
The collar assembly of claim 1 wherein the longitudinal segments pivot along a portion of the radial flange, the flange portion being generally parallel to a longitudinal plane which bisects both longitudinal notches.
Claim 4
Dependent Claim
21 words
The collar assembly of claim 2 wherein at least the second portion of the outer surface of the collar is frustoconical-shaped.
Claim 5
Dependent Claim
23 words
The collar assembly of claim 3 further including means on the collar for restraining the slidable ring in the first and second positions.
Claim 6
Dependent Claim
44 words
The collar assembly of claim 4 wherein the restraining means includes at least one outward projection located between the first and second portions, and wherein at least one outward projection is inclined radially outward from both the first maximum diameter and second minimum diameter.
Claim 7
Dependent Claim
37 words
The collar assembly of claim 5 wherein the restraining means includes two outward projections, each projection on a separate one of the two longitudinal segments and each projection flanking a separate one of the two longitudinal notches.
Claim 8
Dependent Claim
26 words
The collar assembly of claim 4 further including means for limiting the relative rotation of the sliding ring on the collar in the first rear position.
Claim 9
Dependent Claim
38 words
The collar assembly of claim 7 wherein the rotation limiting means is a slot on the slidable ring constructed and arranged to axially register in a raised tab on the outer surface of first portion of the collar.
Claim 10
Dependent Claim
28 words
The collar assembly of claim 4 wherein at least a first portion of the inner surface of the collar adjacent the open end of the collar is frustoconical-shaped.
Claim 11
Dependent Claim
48 words
The collar assembly of claim 9 further including a radially outward extending shoulder on the outer surface of the second portion at the open forward end of the collar to prevent axial removal of the ring from the collar when the ring is in the second forward position.
Claim 12
Dependent Claim
19 words
The collar assembly of claim 3 wherein the first portion of the outer surface of the collar is frustoconical-shaped.
Claim 13
Dependent Claim
56 words
The collar assembly of claim 11 further including means on the collar for restraining the slidable ring in the first and second positions wherein the restraining means includes at least one outward projection located between the first and second positions, the projection inclined radially outward from both the first maximum diameter and the second minimum diameter.
Claim 14
Dependent Claim
23 words
The collar assembly of claim 12 wherein the first and second portions of the outer surface of the collar is a continuous frustoconical-shape.
Claim 15
Dependent Claim
15 words
The collar assembly of claim 13 wherein the inner surface of the collar is frustoconical-shaped.
Claim 16
Dependent Claim
47 words
The collar assembly of claim 14 further including a radially outward extending lip on the outer surface of the second portion at the open end of the collar to prevent axial removal of the ring from the collar when the ring is in the second forward position.
References Cited (Backward Citations)
US2784987A
Cited
US3413021A
Cited
US3394950A
Cited
US3565078A
Cited
US4103941A
Cited
US4405163A
Cited
US4323065A
Cited
US4329987A
Cited
US5281206A
Cited
US4723948A
Cited
US4895570A
Cited
US4950254A
Cited
US5137524A
Cited
US5052386A
Cited
US5120324A
Cited
US5197895A
Cited
US5273533A
Cited
US5242431A
Cited
US5248306A
Cited
US5312377A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-07-31 | 1999-01-30 | 1999-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-07-31 | 2003-01-30 | 2003-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-07-31 | 2007-01-30 | 2007-08-01 | $7700.00 | Window Closed / Lapsed |