CA1132424A - Administration set including burette with pivotable air valve - Google Patents

Administration set including burette with pivotable air valve

Info

Publication number
CA1132424A
CA1132424A CA327,622A CA327622A CA1132424A CA 1132424 A CA1132424 A CA 1132424A CA 327622 A CA327622 A CA 327622A CA 1132424 A CA1132424 A CA 1132424A
Authority
CA
Canada
Prior art keywords
closure
passageway
fitting
ball
open position
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA327,622A
Other languages
French (fr)
Inventor
Herbert Mittleman
Gordon P. Boland
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Baxter International Inc
Original Assignee
Baxter Travenol Laboratories Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Baxter Travenol Laboratories Inc filed Critical Baxter Travenol Laboratories Inc
Application granted granted Critical
Publication of CA1132424A publication Critical patent/CA1132424A/en
Expired legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/36Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests with means for eliminating or preventing injection or infusion of air into body

Abstract

ADMINISTRATION SET INCLUDING BURETTE
WITH PIVOTABLE AIR VALVE

Herbert Mittleman Gordon P. Boland ABSTRACT OF THE DISCLOSURE

An administration set including a burette with an air valve communicating with the burette chamber.
The air valve comprises a stationary port extending from a top portion of the burette chamber with a fitting closing the port except for a small passageway defined by a top portion of the fitting. A pivotable closure overlies the port and is pivotally connected therewith.

The pivotable closure defines an opening for communica-tion with the small passageway when the closure is pivoted to a predetermined open position. The closure opening and the passageway are segregated when the closure is not in the predetermined open position. A filter member is received within the port and directly underlies the small passageway.

Description

L~

BACKGROIJI\JD OF_ THE INVENTION

This invention concerns an administration set of the type used for dispensing parenteral liquid to a patient, and, more particularly, to an administration ; set including a burette having a pivotable air valve~
dministration sets including burettes with drip chambers are widely used ~or administering parenteral liquids to a patient. The burettes typically include a burette chamber with a primary liquid inlet to the chamber and also an injection site communicating with the chamber for injecting medicament into the chamber so that, fox example, the medicament may be diluted ; with the primary liquid.
When the buxette is being filled with liquid or medicament is being injected into the burette for dilution with the liquid, communication of the burette chamber with the air outside the chamber is necessary.
To this end, in one prior art administration set con~
struction, an air tube communicates with the burette chamber, with the air tube having a filter at one end and a clamp between the filter and the burette chamber.
- When it is desired for the burette chamber to be open to air, the clamp is opened.
In another prior art construction, as disclosed in McPhee U.S. Patent No. 3,776,229, a rotatable air valve communicates with the burette chamber for providing the necessary air vent. However, -the rotary air valve disclosed in this patent has certain disadvantages. For example, because of the grooved construction of the ~ ' "' ~.

system, the rotatable portion of the air valve can be easily pulled off by an operator. Additionally, it has been found that the air valve disclosecl in this patent generally requires silicone lubricant in order to provide adequate sealing properties when the valve is closed.
This is disadvantageous hecause the silicone lubricant may become introduced into the burette. Further, the filter carried within the air valve may become clogged, particularly when the unit is shaken by the operator, and there is no way to unclog the filter once i-t becomes clogged.
Accordingly, it is an object of the present invention to provide an administration set having a burette which obviates the requirement for an air tube extending from the burette chamber with a clamp between the air filter and the burette chamber.
Another object of the present invention is to provide an administration set with a burette having a pivotable air valve of the type that cannot be easily removed by an operator.
A further object of the present invention is to provide an administration set having a burette which uses an air valve that does not require silicone lubrication.
A still further object of the present invention is to provide an administration set having an air valve which is structurally arranged to allow an operator to at least partially unclog the filter carried by the air valve, if the filter should become clogged.
Other objects and advantages of the present invention will become apparent as the description proceeds.

SUMMARY OF TIIE INVENTION
The invention relates broadly to a med:ical device having a chamber, an air valve comprising a stationary port extending from a wall of the chamher and defining a bore therethrough, the port including a fitting shaped to define an open internal portion, an outer portion of the fitting shaped to define a passageway~ the fitting closing the port except for the passag~way, with the passageway being substantially smaller than the open internal portion, a pivotable closure overlying the passageway in the outer portion of the fitting and being pivotally connected therewith, the pivotable closure shaped to define an opening for ~- communication with the passageway when the closure is pivoted to a predetermined open position, and means for segregaiing the closure opening from the passageway when said closure is in its closed position, the segregating means comprising a resilient member movable with the pivoting movement of the closure to close and seal the passageway when the closure is not in the predetermined open position, the fitting being proportionea to compress the resilient member while it is closing and sealing the passageway.
In accordance with a particular aspect of the present invention, an administration set is provided of the type including a burette having a burette chamber and a main liquid inlet, an injection site and an air valve communicating with the chamber, and a drip chamber connected downstream of the burette chamber. The improvement comprises the air valve comprising a stationary port extending from a top portion of the burette chamber and defining a bore therethrough. The mb/J5~ - 4 -port includes a fitting defining an open internal portion with the fitting closing the port except ~or a passageway defined by a top portion of the fitting.
The passageway is substantially smaller than the open internal portion.
;~ A pivotable closure overlies the port and is pivotally connected therewith. The pivotable closure defines an opening for communication with the passageway when the closure is pivoted to a predetermined open position.
; Means are provided for segregating the closure opening and the passageway when the closure is not in its predetermined open position. A filter member is located transverse the bore and directly underlies the passageway.
In the illustrative embodiment, the stationary port comprises an open annular member and a separate fitting fastened to the open annular member~ The pivotal connection is between the separate fitting and the :,: ,, pivotable closure and comprises a circular flange and cooperating groove arranyement with khe fitting carrylng a fl-rge and the clo~ure defining a cooperating groove. The ~; '' , ' ~, mb~¢j - 4a -pivotable closure includes an arm extending therefrom to provide manual grasping and the closure and stationary port have a secure pivotal connection preventing an operator from removing the closure from the port.
In the illustrative embodiment, the segregating means comprise a resilient member movable with a pivoting member of -the closure, to close and seal the passageway when the closure is not in the predetermined open position.
The resilient member comprises a ball carried by the closure and spaced from the opening defined by the closure, and the fitting defines an inclined groove for receiving the ball when the closure is pivoted to its predetermined open position. The inclined groove is dimensioned so as to enable the ball to not be under compression when the closure is in its predetermined open position, and so as to enable the ball to move up the incline when the closure is pivoted to a closed position, to place the ball under compression, sealing the passageway when the closure is in a closed position.
A more detailed explanation of the invention is provided in the following description and claims, and is illustrated in the accompanying drawings.
';
BRIEF DESCRIPTION_ OF THE DRAWINGS

FIGURE 1 is a view of an administration set constructed in accordance with the principles of the present inventiorl;
FIGURE 2 is a front view, partially broken for clarity, of a burette and associated drip chamber used in connection with the administration set of FIGURE 1;
. FIGUR~ 3 is a top view of the burette of FIGURE 2, with possible movement of the pivotable valve illustrated in phantom lines;
FIGUP~ 4 is a cross-sectional view thereof, taken ;~ along the plane of the llne 4-4 o~ FIGVRE 3;
FIGURE 5 is a greatly enlarged, fragmentary, cross-sectional view of the pivotabl.e alr vent in its predetermined open position; and FIGU~E 6 is a greatly enlarged, fragmentary view thereof, ~ith the pivotable valve shown in a closed positlon.

DETAILED DESCRIPTION OF THE
ILLUSTRAT VE 5MBODIMENT_ Referring to FIGURE 1, an administration set constructed in accordance with the principles of the present invention is shown therein The administration set includes a conventional spike 10 for coupling to a source of parenteral liquid, tubing 12 connected to main liquid inlet 14 (FIGURE 4~ of a burette 16~ the burette ~-` having a drip chamber 18 extending from the bottom thereof and in series with the flow line, a roller clamp 20, tubing 22 connected from drip chamber 18 to an injection site 24, roller clamp 26 on tubing 22, and tubing 28 connected from the outlet of injection site 24 to a ` conventional needle adapter 30.
Referring now to FIGURES 1-4, the burette 16 : includes a burette chamber 32 having a platform 34 at its outlet end supporting a filter 36, and having an inlet assembly 38 at its inlet end. Inlet assembly 3a includes : main liquid inlet 14 of conven-tional construction, an injection site 40 of conventional construction, and a novel pivotable air valve 42.
Air valve 42 is shown in detail in FIGURES 4-6.
2'~

As illustrated therein, the air valve includes an upstand-ing annular stationary port 44, which in the illustrative embodiment is foxmed integrally wi~h the base 46 of inlet assembly 38. Port 44 carries a central member 48 which defines an axial bore 50. Port 44 also deEines a shoulder 52 which suppoxts air filter 54. Air filter 54 is preferably circular and dimensioned so as to fit securely in a resting position on shoulder 52.
Within the internal wall 55 of port 54, there is pressure-fitted a fitting 56 which defines an open internal portion 58 and closes port 44 except for a passageway 60. Passageway 60 is defined by the top portion 62 of fitting 56 and the passageway is much smaller than the open internal portion 58.
The external sidewall 64 of fitting 56 carries an annular flange 66 which cooperates with an internal groove 68 of a pivotable closure '70, to form a pivota,l connection between pivotable closure 70 and stationary fitting 56.
Pivotable closure 70 comprises a top wall 72 : defining an opening 74 for communication with passageway 60 when the closure is pivoted to a predetermined open position, and an annular sidewall 76 which extends downwardly and externally of port 44. Sidewall 76 is dimensioned ~o that when the pivotable closure 70 is snapped onto fitting 56, there is a relatively close fit between the internal surfaces of sidewall 76 and the external surfaces or fitting 56 and port 44. However, the coupling is such that the pivotable closure 70 can rotate with respect to stationary port 44 and fitting 56.
Pivotable closure 70 also has a raised portion 78 which defines an arc 80 for receiving a resilient ball 82.

Resilient ball 82 is preferably a silicone rubber sphere which is ~ltili~ed to seal passageway 60 when the closure 70 is not in its predetermined open pos.ition. Closure 70 also carries a radi.ally extending, manually-graspable handle 84 for enabling the operator to pivot the closure easily.
As shown in FIGURES S and 6~ fitting 56 defines ;~ a groove 86 having an incline 88, which incline leads to the top of passageway 60. As illustrated in FIGURE 5, when the closure 70 is in its predetermined open position, ball 82 will lie within groove 86 and opening 74 will be aligned with passayeway 60. Arc 80 and groove 86 are - dimensioned so that ~all 82 will not be in a compressed ~ state in its position illustrated in FIGUR~ 5. When arm ~ 84 is turned so that closure 70 is not in its predeter-mined open position, ball 82 will be moved to seal passageway 60 as illustrated in FIGURE 6. In this position, the hall 80 is under compression to provide an effective seal.
By utilizing the aforementioned construction, a highly effective pivotable air valve is provided. The pivotable closure is securely pivotally connected to the .^ stationary portion, the use of silicone lubricant to provide adequake sealing properties is unnecessary and if fil-ter 54 is clogged, a needle can be inserted through opening 74 and passageway 60 to at least partially unclog the filter, as the filter directly underlies passageway 60.
As shown in FIGURE 3, a stop member 90 is con-nected to the assembly for limiting the pivotal movement of closure 70 and a stop member 9~ is also provided for limiting the pivotal movement of the closure 70 in the opposite direction.
Although an illustrative embodiment of the inven-tion has been shown and described, it is -to be understood that various modifications and substitutions may be made : by those skilled in the art without departing from the novel spirit and scope of the present invention.

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Claims (16)

THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. In an administration set including a burette having a burette chamber and a main liquid inlet, an injection site and an air valve communicating with said chamber, and a drip chamber connected down-stream of the burette chamber, the improvement comprising, in combination:
said air valve comprising a stationary port extending from a top portion of said burette chamber and defining a bore therethrough;
said port including a fitting shaped to define an open internal portion, a top portion of said fitting shaped to define a passageway, said fitting closing said port except for said passageway, with said passageway being substantially smaller than said open internal portion;
a pivotable closure overlying said port and being pivotally connected therewith, said pivotable closure shaped to define an opening for communication with said passageway when said closure is pivoted to a predetermined open position; and means for segregating said closure opening and said passageway when said closure is not in said predetermined open position; and a filter member located transverse said bore and directly underlying said passageway, said segregating means comprising a resilient member movable with the pivoting movement of said closure, to close and seal said passageway when the closure is not in said predetermined open position, said resilient member comprising a ball carried by said closure and spaced from said opening defined by said closure.
2. A device as described in Claim 1, said fitting defining an inclined groove for receiving said ball when the closure is pivoted to its predetermined open position.
3. A device as described in Claim 1, said ball comprising a silicone rubber sphere.
4. A device as described in Claim 2, said inclined groove being dimensioned so as to enable said ball to not be under compression when the closure is in its predetermined open position, and so as to enable said ball to move up the incline when the closure is pivoted to a closed position, to place the ball under compression, sealing said passageway when the closure is in a closed position.
5. In an administration set including a burette having a burette chamber and a main liquid inlet, an injection site and an air valve communicating with said chamber, and a drip chamber connected down-stream of the burette chamber, the improvement comprising, in combination:
said air valve comprising a stationary port extending from a top portion of said burette chamber and defining a bore therethrough, said stationary port comprising an open annular member and a separate fitting fastened to said open annular member, said fitting shaped to define an open internal portion, a top portion of said fitting shaped to define a passageway, said fitting closing said port except for said passageway, with said passageway being substantially smaller than said open internal portion;
a pivotable closure overlying said port and being pivotally connected therewith, said pivotable connection being between said separate fitting and said pivotable closure and comprising a circular flange and cooperating groove arrangement with one of said fitting and closure carrying a flange and the other of said fitting and closure defining the cooperating groove;
said pivotable closure shaped to define an opening for communication with said passageway when said closure is pivoted to a predetermined open position;
means for segregating said closure opening and said passageway when said closure is not in said predetermined open position; and a filter member located transverse said bore and directly underlying said passageway;
said segregating means comprising a resilient member movable with the pivoting movement of said closure, to close and seal said passageway when the closure is not in said predetermined open position, said resilient member comprising a ball carried by said closure and spaced from said opening defined by said closure.
6. A device as described in Claim 5, said fitting defining an inclined groove for receiving said ball when the closure is pivoted to its predetermined open position.
7. A device as described in Claim 6, said inclined groove being dimensioned so as to enable said ball to not be under compression when the closure is in its predetermined open position, and so as to enable said ball to move up the incline when the closure is pivoted to a closed position, to place the ball under compression, sealing said passageway when the closure is in a closed position.
8. In an administration set including a burette having a burette chamber and a main liquid inlet, an injection site and an air valve communicating with said chamber, and a drip chamber connected downstream of the burette chamber, the improvement comprising, in combination:
said air valve comprising a stationary port extending from a top portion of said burette chamber and defining a bore therethrough, said stationary port comprising an open annular member and a separate fitting fastened to said open annular member;
said fitting shaped to define an open internal portion, a top portion of said fitting shaped to define a passageway, said fitting closing said port except for said passageway defined by a top portion of said fitting, with said passageway being substantially smaller than said open internal portion;
a pivotable closure overlying said port and being pivotally connected therewith, said pivotable closure shaped to define an opening for communication-with said passageway when said closure is pivoted to a predetermined open position, said pivotable connection being between said separate fitting and said pivotable closure and comprising a circular flange and cooperating groove arrangement with one of said fitting and closure carrying a flange and the other of said fitting and closure defining the cooperating groove;
means for segregating said closure opening and said passageway when said closure is not in said pre-determined open position, said segregating means comprising a resilient ball movable with the pivoting movement of said closure, to close and seal said passageway when the closure is not in said predetermined open position, said fitting defining an inclined groove for receiving said ball when the closure is pivoted to its predetermined open position, said fitting defining an inclined groove for receiving said ball when the closure is pivoted to its predetermined open position, said inclined groove being dimensioned so as to enable said ball to not be under compression when the closure is in its predetermined open position, and so as to enable said ball to move up the incline when the closure is pivoted to a closed position, to place the ball under compression, sealing said passageway when the closure is in a closed position; and a filter member located transverse said bore and directly underlying said passageway, said port defining support means for receiving and supporting said filter member.
9. A device as described in Claim 8, said closure opening being located to directly overlie said passageway when said closure is in its predetermined open position.
10. In a medical device having a chamber, an air valve comprising a stationary port extending from a wall of said chamber and defining a bore therethrough, said port including a fitting shaped to define an open internal portion, an outer portion of said fitting shaped to define a passageway, said fitting closing said port except for said passageway, with said passage-way being substantially smaller than the open internal portion, a pivotable closure overlying the passageway in the outer portion of said fitting and being pivotally connected therewith, said pivotable closure shaped to define an opening for communication with said passageway when the closure is pivoted to a predetermined open position, and means for segregating said closure opening from said passageway when said closure is in its closed position, said segregating means comprising a resilient member movable with the pivoting movement of said closure to close and seal said passageway when the closure is not in said predetermined open position, said fitting being proportioned to compress the resilient member while it is closing and sealing said passageway.
11. The medical device of Claim 10 in which a space is provided to permit said resilient member to expand out of its compressed configuration when the closure is pivoted to the predetermined open position.
12. The medical device of Claim 11 in which said resilient member comprises a resilient ball carried by said closure and spaced from the opening defined by said closure.
13. The medical device of Claim 12 in which said fitting and closure define an inclined groove for conveying said ball when the closure is pivoted to its predetermined open position to a location to hold the ball in relatively uncompressed position, said inclined groove being dimensioned so as to enable the ball to move up the inclined groove when the closure is pivoted to a closed position to place the ball under compression while sealing said passageway when the closure is in a closed position.
14. In a medical device having a chamber, an air valve communicating with said chamber, said air valve comprising a stationary port extending from an outer portion of said chamber and defining a bore therethrough, a fitting carried on said port, said fitting shaped to define an open internal portion, an outer portion of said fitting shaped to define a passageway, said fitting closing said port except for the passageway, with the passageway being substantially smaller than the open internal portion, a pivotable closure overlying said passageway of the fitting and pivotally connected therewith, said pivotable closure shaped to define an opening for communication with said passageway when said closure is pivoted to a predetermined open position, resilient ball means for segregating said closure opening from said passageway when the closure is not in said predetermined open position, said resilient ball being movable with the pivoting movement of said closure and spaced from the opening defined by said closure, to seal said passageway in one rotating position of the closure and to roll away from said passageway in another rotating position to permit communication between the passageway and the opening, said fitting and closure defining an inclined groove for conveying said ball when the closure is pivoted to its predetermined open position to a location to hold the ball in relatively uncompressed position, said inclined groove being dimensioned so as to enable the ball to move up the inclined groove when the closure is pivoted to a closed position to place the ball under compression while sealing said passageway when the closure is in a closed position.
15. The medical device of Claim 14 in which said ball is made of silicone rubber.
16. The medical device of Claim 14 in which said closure opening is located to directly overlie said.
passageway when the closure is in its predetermined open position.
CA327,622A 1978-08-30 1979-05-15 Administration set including burette with pivotable air valve Expired CA1132424A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US93806378A 1978-08-30 1978-08-30
US938,063 1978-08-30

Publications (1)

Publication Number Publication Date
CA1132424A true CA1132424A (en) 1982-09-28

Family

ID=25470804

Family Applications (1)

Application Number Title Priority Date Filing Date
CA327,622A Expired CA1132424A (en) 1978-08-30 1979-05-15 Administration set including burette with pivotable air valve

Country Status (9)

Country Link
JP (1) JPS5532578A (en)
AU (1) AU526438B2 (en)
BE (1) BE878475A (en)
CA (1) CA1132424A (en)
DE (1) DE2921532A1 (en)
ES (1) ES483753A1 (en)
FR (1) FR2434627B1 (en)
GB (1) GB2028660B (en)
ZA (1) ZA792559B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2090291A1 (en) * 1993-02-24 1994-08-25 Yueh-Horng Chen Device for use in controlling intravenous drip
DE102007060131A1 (en) * 2007-12-13 2009-06-25 Technische Universität Dresden Explanted organ's vessel connection filling method for medical field, involves continuously emptying dosage device and simultaneously withdrawing hose from vessel connection as long as vessel connection is completely filled
EP2771251B1 (en) * 2011-10-27 2016-01-13 LvmH Recherche Closure cap for a product container, in particular a cosmetic product container

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1088508A (en) * 1965-12-10 1967-10-25 Product Design & Engineering I Container cap having frangibly connected sealing means
JPS4736537U (en) * 1971-05-14 1972-12-22
BE790246A (en) * 1971-11-26 1973-02-15 American Hospital Supply Corp MEDICINAL LIQUID ADMINISTRATION DEVICE IN FLOW AND VOLUMETRIC REGIMES
JPS5348549Y2 (en) * 1974-11-22 1978-11-20

Also Published As

Publication number Publication date
AU526438B2 (en) 1983-01-13
FR2434627A1 (en) 1980-03-28
DE2921532A1 (en) 1980-03-06
ES483753A1 (en) 1980-03-01
GB2028660A (en) 1980-03-12
JPS5532578A (en) 1980-03-07
BE878475A (en) 1979-12-17
FR2434627B1 (en) 1985-10-18
GB2028660B (en) 1983-03-02
ZA792559B (en) 1980-08-27
AU4803779A (en) 1980-05-22
JPH0156782B2 (en) 1989-12-01

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