EP0252644A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Method and apparatus for catching fluids purged from a syringe
Assignee: Pharmacia and Upjohn Co
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Filing: 1987-06-23
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Granted: —
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Expires: 2007-06-23
Abstract
Abstract A syringe purging device (100) comprises a closed chamber (110) into which air and/or any excessive amount of a hazardous liquid, such as a chemotherapy drug, is ejected from a syringe (130) to overcome the health hazard created by openly purging syringes into the air or into a pad of gauze material. A sharp open end (138) of a hollow needle (136) of a syringe (130) is sealingly inserted into the chamber (110) and the syringe (130) is activated to purge any air and/or excess liquid into the chamber (110) which expands as necessary. Preferably, the chamber (110) is then further expanded to reduce the pressure therewithin to better ensure clean withdrawal of the needle (136) from the chamber (110) or extension of the needle (136) beyond the chamber (110) and retention within the chamber (110) of any fluids ejected from the syringe (130).
Inventors
- 👤 Mark Edward Strung
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 12:18
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/31; A61M5/3146; A61M5/001; A61M5/32; A61M5/3202; A61M5/3205; A61M5/321; A61M5/3243; A61M2005/3103; A61M2005/3104; A61M5/46
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
135 words
A device (100) for catching fluids ejected from a sharp open end (138) of a hollow needle (136) of a syringe (130) containing a hazardous or potentially hazardous liquid as air and/or excess liquid is purged from the syringe (130), said device comprising closed and expandable chamber means (110) for receiving the sharp open end (138) of a hollow needle (136) of a syringe (130) therewithin whereby a syringe may be purged by inserting the needle (136) of the syringe (130) into said chamber (110) and activating the syringe (130) to eject any air and/or excess liquid therefrom, with the air and/or excess liquid from the syringe entering and expanding said chamber (110) as necessary and being retained within said chamber (110) as the needle (136) is withdrawn from or extended beyond said chamber (110).
Claim 2
Independent Claim
135 words
A device (100) for catching fluids ejected from a sharp open end (138) of a hollow needle (136) of a syringe (130) containing a hazardous or potentially hazardous liquid as air and/or excess liquid is purged from the syringe (130), said device comprising closed and expandable chamber means (110) for receiving the sharp open end (138) of a hollow needle (136) of a syringe (130) therewithin whereby a syringe may be purged by inserting the needle (136) of the syringe (130) into said chamber (110) and activating the syringe (130) to eject any air and/or excess liquid therefrom, with the air and/or excess liquid from the syringe entering and expanding said chamber (110) as necessary and being retained within said chamber (110) as the needle (136) is withdrawn from or extended beyond said chamber (110).
Claim 3
Dependent Claim
69 words
A syringe purging device (100) as claimed in claim 1 wherein said chamber means (110) is further expanded after purging activation of the syringe (130) to effect reduced pressure within the chamber means (110) prior to withdrawal or extension of the needle (136) and thereby ensure clean withdrawal or extension of the needle (136) and retention within said chamber means (110) of any fluids ejected from the syringe (130).
Claim 4
Dependent Claim
98 words
A syringe purging device (100) as claimed in claim 2 wherein said closed and expandable chamber means (110) comprises: a tubular member (102) having a closed end (104) and an open end (106); and movable stopper means (108) positioned within said tubular member (102) for defining a chamber (110) between said stopper means (108) and the closed end (104) of said tubular member (102), said stopper means (108) maintaining an airtight seal within said tubular member (102) and permitting sealed entrance into said chamber (110) by a needle (136) of a syringe (130) puncturing said stopper means (108).
Claim 5
Dependent Claim
53 words
A syringe purging device (100) as claimed in claim 3 wherein said tubular member (102) includes restraint means (112) adjacent the open end (106) thereof for abutting engagement with said stopper means (108) to prevent inadvertent opening of said chamber (110) by removal of said stopper means (108) from said tubular member (102).
Claim 6
Dependent Claim
37 words
A syringe purging device (100) as claimed in claim 4 wherein said tubular member (102) includes a funnel-shaped entryway (152) at the open end (106) thereof to facilitate insertion of a syringe needle (136) into said device.
Claim 7
Dependent Claim
34 words
A syringe purging device (100) as claimed in claim 5 further comprising flange means (154) extending from the open end (106) of said tubular member (102) to facilitate handling and use of said device.
Claim 8
Dependent Claim
28 words
A syringe purging device (100) as claimed in claim 6 wherein said tubular member (102) is formed from plastic and said stopper means (108) is formed from rubber.
Claim 9
Dependent Claim
34 words
A syringe purging device (100) as claimed in claim 4 further comprising flange means (114,150) extending from the open end (106) of said tubular member (102) to facilitate handling and use of said device.
Claim 10
Dependent Claim
49 words
A syringe purging device (100) as claimed in claim 8 further comprising chamber maintaining means (116) positioned within said chamber (110) for limiting movement of said stopper means (108) toward said closed end (104) of said tubular member (102) to thereby define a minimum size for said chamber (110).
Claim 11
Dependent Claim
28 words
A syringe purging device (100) as claimed in claim 9 wherein said tubular member (102) is formed from plastic and said stopper means (108) is formed from rubber.
Claim 12
Dependent Claim
154 words
A syringe purging device (100) as claimed in claim 2 wherein said closed and expandable chamber means (110) comprises: an open ended first tubular member (164); stopper means (158) fixedly positioned within and closing one end of said first tubular member (164) while leaving the other end open, said stopper means (158) maintaining an airtight seal of the closed end of said first tubular member (164) and permitting sealed entrance into said first tubular member (164) by a needle (136) of a syringe (130) puncturing said stopper means (158); a second tubular member (166) having a closed end (168) and an open end (170), said second tubular member (166) being sized such that its open end (170) telescopically engages the open end of said first tubular member (164) to define a closed and expandable chamber (110); and seal means (172) for airtight sealing the telescopic engagement between said first and second tubular members (164,166).
Claim 13
Dependent Claim
47 words
A syringe purging device (100) as claimed in claim 11 wherein the closed end (168) of said second tubular member (166) includes diaphragm means (169) for permitting sealed extension of a needle (136) of a syringe (130) beyond said chamber (110) by puncturing said diaphragm means (169).
Claim 14
Dependent Claim
47 words
A syringe purging device (100) as claimed in claim 11 wherein said first and second tubular members (164,166) include restraint means (172,174) adjacent the open ends thereof for abutting engagement to prevent inadvertent opening of said chamber (110) by disengaging said first and second tubular members (164,166).
Claim 15
Dependent Claim
34 words
A syringe purging device (100) as claimed in claim 13 further comprising flange means (176) extending from the closed end of said first tubular member (164) to facilitate handling and use of said device.
Claim 16
Dependent Claim
37 words
A syringe purging device (100) as claimed in claim 14 wherein said first tubular member (164) includes a funnel-shaped entryway (152) at the open end thereof to facilitate insertion of a syringe needle (136) into said device.
Claim 17
Dependent Claim
31 words
A syringe purging device (100) as claimed in claim 15 wherein said first and second tubular members (164,166) are formed from plastic and said stopper means (158) is formed from rubber.
Claim 18
Dependent Claim
67 words
A syringe purging device (100) as claimed in claim 1 wherein said closed and expandable chamber means (110) comprises collapsed bag-like means (156) for receiving air and/or excess liquid ejected from a syringe (130), said bag-like means (156) being airtight and including a sealing member (158) which permits sealed entrance into said chamber (110) by a needle (136) of a syringe (130) puncturing said sealing member (158).
Claim 19
Independent Claim
87 words
A method for catching fluids ejected from a sharp open end (138) of a hollow needle (136) of a syringe (130) containing a chemotherapy drug as air and/or excess drug is purged from the syringe (130) comprising the steps of: inserting the sharp open end (138) of a hollow needle (136) of a syringe (130) into a closed chamber (110); manually operating the syringe (130) to purge air and/or excess drug from the syringe into the chamber (110); and withdrawing the needle (136) from the chamber (110).
Claim 20
Independent Claim
87 words
A method for catching fluids ejected from a sharp open end (138) of a hollow needle (136) of a syringe (130) containing a chemotherapy drug as air and/or excess drug is purged from the syringe (130) comprising the steps of: inserting the sharp open end (138) of a hollow needle (136) of a syringe (130) into a closed chamber (110); manually operating the syringe (130) to purge air and/or excess drug from the syringe into the chamber (110); and withdrawing the needle (136) from the chamber (110).
Claim 21
Independent Claim
88 words
A method for catching fluids ejected from a sharp open end (138) of a hollow needle (136) of a syringe (130) containing a chemotherapy drug as air and/or excess drug is purged from the syringe (130) comprising the steps of: inserting the sharp open end (138) of a hollow needle (136) of a syringe (130) into a closed chamber (110); manually operating the syringe (130) to purge air and/or excess drug from the syringe (130) into the chamber (110); and extending the needle (136) beyond the chamber (110).
Claim 22
Independent Claim
88 words
A method for catching fluids ejected from a sharp open end (138) of a hollow needle (136) of a syringe (130) containing a chemotherapy drug as air and/or excess drug is purged from the syringe (130) comprising the steps of: inserting the sharp open end (138) of a hollow needle (136) of a syringe (130) into a closed chamber (110); manually operating the syringe (130) to purge air and/or excess drug from the syringe (130) into the chamber (110); and extending the needle (136) beyond the chamber (110).
Claim 23
Independent Claim
115 words
A method for catching fluids ejected from a sharp open end (138) of a hollow needle (136) of a syringe (130) containing a hazardous or potentially hazardous liquid as air and/or excess liquid is purged from the syringe (130) comprising the steps of: inserting the sharp open end (138) of a hollow needle (136) of a syringe (130) into a closed and expandable chamber (110); manually operating the syringe (130) to purge air and/or excess liquid from the syringe (130), said air and/or excess liquid entering the chamber (110) and expanding it as necessary; and withdrawing the needle (136) from the chamber (110), any purged air and/or excess liquid being retained within the chamber (110).
Claim 24
Independent Claim
115 words
A method for catching fluids ejected from a sharp open end (138) of a hollow needle (136) of a syringe (130) containing a hazardous or potentially hazardous liquid as air and/or excess liquid is purged from the syringe (130) comprising the steps of: inserting the sharp open end (138) of a hollow needle (136) of a syringe (130) into a closed and expandable chamber (110); manually operating the syringe (130) to purge air and/or excess liquid from the syringe (130), said air and/or excess liquid entering the chamber (110) and expanding it as necessary; and withdrawing the needle (136) from the chamber (110), any purged air and/or excess liquid being retained within the chamber (110).
Claim 25
Dependent Claim
69 words
A method for purging a syringe (130) as claimed in claim 20 further comprising the step of expanding the chamber (110) to effect reduced pressure therewithin after manually operating the syringe (130) to purge air and/or excess liquid therefrom, the reduced pressure within the chamber (110) ensuring clean withdrawal of the needle from the chamber (110) and retention within the chamber (110) of any purged air and/or excess liquid.
Claim 26
Independent Claim
115 words
A method for catching fluids ejected from a sharp open end (138) of a hollow needle (136) of a syringe (130) containing a hazardous or potentially hazardous liquid as air and/or excess liquid is purged from the syringe (130) comprising the steps of: inserting the sharp open end (138) of a hollow needle (136) of a syringe (130) into a closed and expandable chamber (110); manually operating the syringe (130) to purge air and/or excess liquid from the syringe (130), said air and/or excess liquid entering the chamber (110) and expanding it as necessary; and extending the needle (136) beyond the chamber (110), any purged air and/or excess liquid being retained within the chamber (110).
Claim 27
Independent Claim
115 words
A method for catching fluids ejected from a sharp open end (138) of a hollow needle (136) of a syringe (130) containing a hazardous or potentially hazardous liquid as air and/or excess liquid is purged from the syringe (130) comprising the steps of: inserting the sharp open end (138) of a hollow needle (136) of a syringe (130) into a closed and expandable chamber (110); manually operating the syringe (130) to purge air and/or excess liquid from the syringe (130), said air and/or excess liquid entering the chamber (110) and expanding it as necessary; and extending the needle (136) beyond the chamber (110), any purged air and/or excess liquid being retained within the chamber (110).
Claim 28
Dependent Claim
69 words
A method for purging a syringe as claimed in claim 22 further comprising the step of expanding the chamber (110) to effect reduced pressure therewithin after manually operating the syringe (130) to purge air and/or excess liquid therefrom, the reduced pressure within the chamber (110) ensuring clean extension of the needle (136) beyond the chamber (110) and retention within the chamber (110) of any purged air and/or excess liquid.
References Cited (Backward Citations)
No citation records indexed.
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