US3672369A - Hypodermic syringe - Google Patents
Hypodermic syringe Download PDFInfo
- Publication number
- US3672369A US3672369A US886195A US3672369DA US3672369A US 3672369 A US3672369 A US 3672369A US 886195 A US886195 A US 886195A US 3672369D A US3672369D A US 3672369DA US 3672369 A US3672369 A US 3672369A
- Authority
- US
- United States
- Prior art keywords
- bore
- lumen
- barrel member
- plunger
- hub
- 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 - Lifetime
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
- A61M2005/31516—Piston or piston-rod constructions, e.g. connection of piston with piston-rod reducing dead-space in the syringe barrel after delivery
Definitions
- a syringe of the hypodermic type including a unitary barrel member having a large upper bore and a small lumen at the lower end thereof communicating with the bore, the lower end of the barrel member being adapted to receive a needle, with a piston assembly slidable in the barrel member and having a sealing portion sealingly engaged the large bore and shaped to discharge all of the medicant from the large bore, there being provided a plunger fixed to the piston assembly and complementary to as well as coextensive in length with the barrel member lumen for the purpose of discharging all of the medicant from the lumen minimizing medicant loss in the syringe.
- hypodermic syringe having a barrel member and plunger assembly constructed so that 1 upon discharge, all of the medicant is delivered from the barrel member.
- the present invention obviates this problem through the discharge of all of the medicant from the syringe barrel by providing a seal which slides in the larger portion of the barrel member that is configured to discharge all medicant from this large bore, and the seal is provided with a plunger projection extending directly therefrom for discharging all of the medicant from the lumen in the barrel communicating with the large bore in the lower end of the barrel.
- FIG. I is a plan view of the present hypodermic syringe
- FIG. 2 is a fragmentary section of the present syringe with the plunger assembly withdrawn.
- FIG. 3 is a fragmentary section of the present syringe with the plunger assembly in its retracted or discharged position.
- hypodermic syringe I0 is illustrated of the luer type having a transparent barrel I2 slidably receiving a plunger assembly 14.
- the lower end of the barrel 12 receives a needle hub assembly I6.
- the barrel includes an enlarged upper cylindrical portion 18 having a large cylindrical bore 19 therein which is adapted to receive a major portion of the medicant.
- Lumen 21 is of smaller diameter than bore 19 and has at its upper end an arcuate annular juncture 23 with the large bore 19.
- the piston assembly 14 is constructed to deliver all of the medicant from the bore 19 as well as from the smaller lumen 21.
- the piston assembly 14 includes a cylindrical operator 24 havinga head portion 25 at the end thereof for facilitating the operator's hand movement of the plunger as sembly.
- Operator 24 has at its lower end a stepped annular boss portion 26 that receives a one iece rubber seal 30.
- Seal 30 has an elongated gener ly cylindrical rubber body having an upper annular seal received securely on the stepped portion-26 and having an annular upper seal 32 and an annular lower seal 33.
- the annular seals 32 and 33 are semi-circular in cross section with the lower seal 33 being congruent with the juncture 23 so that they define complementary sealing surfaces as shown in FIG. 3 to discharge all of the medicant from the large bore 19 upon movement of the plunger assembly 14 to the position shown in Fig. 3.
- Projection 35 is frustoconical in configuration, congruent and coextensive in length with lumen 21 (as shown in FIG. 3) so that the projection completely discharges the lumen as the plunger assembly 14 is moved to its discharged position shown in FIG. 3 during patient injection.
- a hypodermic syringe assembly of the luer type comprising: a unitary transparent barrel member having an upper receptacle portion with a large diameter bore, and a lower portion integral with said receptacle portion and having a lumen communicating with said bore and of a smaller diameter than said bore, said lumen extending entirely through said lower portion to the lower end of said barrel member, a removable needle and hub member with the needle hub surrounding and fixed to said lower portion and slidable thereon, said hub being engagedwith the exterior surface of said lower portion and surrounding a substantial lower end portion of said lumen, a plunger slidable in said barrel member for discharging medicament therefrom, said plunger having a seal portion conforming in configuration to and engageable with the juncture between said receptacle and said lumen, said plunger having a small diameter projection fixed thereto and conforming in shape to said lumen, said projection being of sufficient size to completely fill said lumen and of sufficient length to extend in the discharged position of said plunger substantially to the
- a hypodermic syringe assembly of the luer type comprising: a generally cylindrical barrel member, a needle and hub member connected to the lower end of said barrel member, said barrel member having an upper portion with an upper bore, and a lower portion integral with said upper portion and having a bore communicating with and of smaller diameter than said upper bore, a plunger assembly slidable in said barrel member, seal means on said plunger assembly for discharging all of the medicament from said upper bore, and a projection on said plunger assembly fixed with respect thereto and having an axial length greater than the diameter of said upper bore for discharging substantially all of the medicament from said smaller diameter bore, the hub of said needle and hub member slidably engaging the exterior surface of said lower portion and surrounding a substantial lower end portion of said projection when said plunger assembly is in the discharged position.
Abstract
A syringe of the hypodermic type including a unitary barrel member having a large upper bore and a small lumen at the lower end thereof communicating with the bore, the lower end of the barrel member being adapted to receive a needle, with a piston assembly slidable in the barrel member and having a sealing portion sealingly engaged the large bore and shaped to discharge all of the medicant from the large bore, there being provided a plunger fixed to the piston assembly and complementary to as well as coextensive in length with the barrel member lumen for the purpose of discharging all of the medicant from the lumen minimizing medicant loss in the syringe.
Description
United States Patent 1 June 27, 1972 Brown [54] HYPODERMIC SYRINGE [72] Inventor: Alexander M. Brown, Daytona Beach, Fla.
[73] Assignee: Sherwood Medical Industries, Inc. [22] Filed: Dec. 18, 1969 21 Appl. No.: 886,195
[52] US. Cl ..l28/2l8 P, 128/261, 128/234 [51] Int. Cl. ,.A6lm 35/00, A61m 5/22, A61m 5/32, A61 j 7/00 [58] FieldofSearch ..l28/261,218C,218R,218PA, 128/234, 235; 222/386, 387, 47
[56] References Cited UNITED STATES PATENTS 2,724,385 11/1955 Lockhart ..128/261 3,506,008 4/1970 Huck ..128/235 X 3,291,128 12/1966 ONeil ..l28/218 R 2,875,761 3/1959 l-lelmer et al. .....128/218 C 3,153,496 10/1964 Johnson ..l28/218 C 3,216,616 11/1965 Blankenship ..222/47 FOREIGN PATENTS OR APPLICATIONS 571,601 3/1933 Germany ..l28/2l8 PA Primary Examiner-Aldrich F. Medbery AttorneyDonald S. Olexa, Jerome M. Teplitz, John G. Heimovics, William G. Lawler, Jr. and Hofgren, Wegner, Allen, Stellman & McCord [57] ABSTRACT A syringe of the hypodermic type including a unitary barrel member having a large upper bore and a small lumen at the lower end thereof communicating with the bore, the lower end of the barrel member being adapted to receive a needle, with a piston assembly slidable in the barrel member and having a sealing portion sealingly engaged the large bore and shaped to discharge all of the medicant from the large bore, there being provided a plunger fixed to the piston assembly and complementary to as well as coextensive in length with the barrel member lumen for the purpose of discharging all of the medicant from the lumen minimizing medicant loss in the syringe.
3 Claims, 3 Drawing Figures PATEHTEDJUHZ? 1972 INVENTOR f vmdez/ 7Z$3m ATTORNEY nvromzmmc SYRINGE BACKGROUND OF THE PRESENT INVENTION engaging the sides of the bore for the purpose of providing the v necessary seal to both draw and discharge fluid relative to the barrel member. The seals in these prior constructions have in many instances been incapable of'discharging all of the medicant from the large bore so that not only is there residual medicant in the barrel lumen after discharge, but medicant is also not completely dispelled from the large barrel bore.
It is the object of the present invention to obviate the problems inprior art syringe devices as noted above.
SUMMARY OF THE PRESENT INVENTION In accordance withthe present invention'a hypodermic syringe is provided having a barrel member and plunger assembly constructed so that 1 upon discharge, all of the medicant is delivered from the barrel member.
In today's mass medicant injection procedures there is a significant trend toward the use of entirely disposable syringe devices. These syringe devices are filledwith medicant which is discharged into the patient and thereafter the entire syringe disposed of. It is apparent that with the present high rate of medicant injections per patient that the loss of even a small quantity of medicant in each injection can result over a large number of injections in asignificant wasted medicant cost expenditure. v
The present invention obviates this problem through the discharge of all of the medicant from the syringe barrel by providing a seal which slides in the larger portion of the barrel member that is configured to discharge all medicant from this large bore, and the seal is provided with a plunger projection extending directly therefrom for discharging all of the medicant from the lumen in the barrel communicating with the large bore in the lower end of the barrel.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. I is a plan view of the present hypodermic syringe;
FIG. 2 is a fragmentary section of the present syringe with the plunger assembly withdrawn; and
FIG. 3 is a fragmentary section of the present syringe with the plunger assembly in its retracted or discharged position.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to the drawings a hypodermic syringe I0 is illustrated of the luer type having a transparent barrel I2 slidably receiving a plunger assembly 14. The lower end of the barrel 12 receives a needle hub assembly I6.
The barrel includes an enlarged upper cylindrical portion 18 having a large cylindrical bore 19 therein which is adapted to receive a major portion of the medicant. Communicating with the bore 19 and also formed within barrel member 12 is a tapered lumen 21 that serves to communicate the medicant receiving bore I9 with the needle hub assembly 16. Lumen 21 is of smaller diameter than bore 19 and has at its upper end an arcuate annular juncture 23 with the large bore 19.
The piston assembly 14 is constructed to deliver all of the medicant from the bore 19 as well as from the smaller lumen 21.
Toward this end the piston assembly 14 includes a cylindrical operator 24 havinga head portion 25 at the end thereof for facilitating the operator's hand movement of the plunger as sembly. Operator 24 has at its lower end a stepped annular boss portion 26 that receives a one iece rubber seal 30.
For the purposes of assuring that all of the medicant is discharged from the lumen upon discharging the syringe 10, an integral projection 35 is provided on rubber seal 30. Projection 35 is frustoconical in configuration, congruent and coextensive in length with lumen 21 (as shown in FIG. 3) so that the projection completely discharges the lumen as the plunger assembly 14 is moved to its discharged position shown in FIG. 3 during patient injection.
I claim:
I. A hypodermic syringe assembly of the luer type, comprising: a unitary transparent barrel member having an upper receptacle portion with a large diameter bore, and a lower portion integral with said receptacle portion and having a lumen communicating with said bore and of a smaller diameter than said bore, said lumen extending entirely through said lower portion to the lower end of said barrel member, a removable needle and hub member with the needle hub surrounding and fixed to said lower portion and slidable thereon, said hub being engagedwith the exterior surface of said lower portion and surrounding a substantial lower end portion of said lumen, a plunger slidable in said barrel member for discharging medicament therefrom, said plunger having a seal portion conforming in configuration to and engageable with the juncture between said receptacle and said lumen, said plunger having a small diameter projection fixed thereto and conforming in shape to said lumen, said projection being of sufficient size to completely fill said lumen and of sufficient length to extend in the discharged position of said plunger substantially to the lower end of said lumen and within said hub to assure discharge of substantially all of the medicament from said barrel member said plunger including a rubber seal member having said seal portion thereon and said projection extending axially from said seal portion and having an axial length greater than the diameter of said bore.
2. A syringe assembly as defined in claim I, wherein said lumen is tapered downwardly and said projection is a part of said seal member and is tapered downwardly complementary with said lumen.
3. A hypodermic syringe assembly of the luer type, comprising: a generally cylindrical barrel member, a needle and hub member connected to the lower end of said barrel member, said barrel member having an upper portion with an upper bore, and a lower portion integral with said upper portion and having a bore communicating with and of smaller diameter than said upper bore, a plunger assembly slidable in said barrel member, seal means on said plunger assembly for discharging all of the medicament from said upper bore, and a projection on said plunger assembly fixed with respect thereto and having an axial length greater than the diameter of said upper bore for discharging substantially all of the medicament from said smaller diameter bore, the hub of said needle and hub member slidably engaging the exterior surface of said lower portion and surrounding a substantial lower end portion of said projection when said plunger assembly is in the discharged position.
k l l
Claims (3)
1. A hypodermic syringe assembly of the luer type, comprising: a unitary transparent barrel member having an upper receptacle portion with a large diameter bore, and a lower portion integral with said receptacle portion and having a lumen communicating with said bore and of a smaller diameter than said bore, said lumen extending entirely through said lower portion to the lower end of said barrel member, a removable needle and hub member with the needle hub surrounding and fixed to said lower portion and slidable thereon, said hub being engaged with the exterior surface of said lower portion and surrounding a substantial lower end portion of said lumen, a plunger slidable in said barrel member for discharging medicament therefrom, said plunger having a seal portion conforming in configuration to and engageable with the juncture between said receptacle and said lumen, said plunger having a small diameter projection fixed thereto and conforming in shape to said lumen, said projection being of sufficient size to completely fill said lumen and of sufficient length to extend in the discharged position of said plunger substantially to the lower end of said lumen and within said hub to assure discharge of substantially all of the medicament from said barrel member said plunger including a rubber seal member having said seal portion thereon and said projection extending axially from said seal portion and having an axial length greater than the diameter of said bore.
2. A syringe assembly as defined in claim 1, wherein said lumen is tapered downwardly and said projection is a part of said seal member and is tapered downwardly complementary with said lumen.
3. A hypodermic syringe asseMbly of the luer type, comprising: a generally cylindrical barrel member, a needle and hub member connected to the lower end of said barrel member, said barrel member having an upper portion with an upper bore, and a lower portion integral with said upper portion and having a bore communicating with and of smaller diameter than said upper bore, a plunger assembly slidable in said barrel member, seal means on said plunger assembly for discharging all of the medicament from said upper bore, and a projection on said plunger assembly fixed with respect thereto and having an axial length greater than the diameter of said upper bore for discharging substantially all of the medicament from said smaller diameter bore, the hub of said needle and hub member slidably engaging the exterior surface of said lower portion and surrounding a substantial lower end portion of said projection when said plunger assembly is in the discharged position.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US88619569A | 1969-12-18 | 1969-12-18 |
Publications (1)
Publication Number | Publication Date |
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US3672369A true US3672369A (en) | 1972-06-27 |
Family
ID=25388585
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US886195A Expired - Lifetime US3672369A (en) | 1969-12-18 | 1969-12-18 | Hypodermic syringe |
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US (1) | US3672369A (en) |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4121587A (en) * | 1977-03-03 | 1978-10-24 | National Patent Development Corporation | Root canal delivery syringe |
EP0047042A2 (en) * | 1980-08-29 | 1982-03-10 | Coöperatieve Apothekers Vereeniging "De Onderlinge Pharmaceutische Groothandel" U.A. | Injection syringe |
FR2522506A1 (en) * | 1982-01-27 | 1983-09-09 | Biotherax Lab | Two-stage syringe for rectal injections - opt. has barrel and piston moulded from different materials |
FR2716801A1 (en) * | 1994-03-04 | 1995-09-08 | Pasteur Merieux Serums Vacc | Set for the distribution of a pharmaceutical solution in cartridges or the like, in particular after taking up a lyophilized product. |
EP0695554A3 (en) * | 1994-07-27 | 1996-05-08 | Survival Technology | Automatic injector |
US5865803A (en) * | 1997-05-19 | 1999-02-02 | Major; Miklos | Syringe device having a vented piston |
WO1999006086A1 (en) * | 1997-08-04 | 1999-02-11 | Shadd Daniel L Jr | A hypodermic syringe |
US5902270A (en) * | 1996-11-26 | 1999-05-11 | Jentzen; S. William | Low dead space, interchangeable needle syringe |
WO2000002466A3 (en) * | 1998-07-08 | 2000-03-16 | Wolfgang Peter Schmitz | Device for the partial colouring of hair |
US6616636B2 (en) * | 2001-02-03 | 2003-09-09 | Choon-Bal Lee | Disposable safety syringe which leaves no residual injection |
WO2008113611A1 (en) * | 2007-03-22 | 2008-09-25 | Eric Schliemann | Method and device for the metered dispensing of a medium |
US20100145274A1 (en) * | 2008-12-10 | 2010-06-10 | Jan Royce | Liquid pharmaceutical identity and quantity marking |
US20110313396A1 (en) * | 2010-06-18 | 2011-12-22 | Chanoch Lawrence H | Adjustable dose setting plunger for syringe |
US20110313397A1 (en) * | 2010-06-18 | 2011-12-22 | Howard Gold | Adjustable plunger dose stop |
WO2012111539A1 (en) * | 2011-02-17 | 2012-08-23 | 有限会社フチガミ器械 | Syringe |
US20130041344A1 (en) * | 2009-09-16 | 2013-02-14 | Sanofi-Aventis Detuschland Gmbh | Medication Delivery Device and Method for Dispensing a Medication |
US11529172B1 (en) * | 2021-11-15 | 2022-12-20 | PherDal | Fertility kits with syringes and collection jars, and method of use |
USD1015532S1 (en) | 2021-11-15 | 2024-02-20 | PherDal | Fertility syringe |
US11931075B2 (en) | 2021-11-15 | 2024-03-19 | PherDal, LLC | Fertility kits with sterile syringes and collection jars, method of sterilization and use |
-
1969
- 1969-12-18 US US886195A patent/US3672369A/en not_active Expired - Lifetime
Cited By (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4121587A (en) * | 1977-03-03 | 1978-10-24 | National Patent Development Corporation | Root canal delivery syringe |
EP0047042A2 (en) * | 1980-08-29 | 1982-03-10 | Coöperatieve Apothekers Vereeniging "De Onderlinge Pharmaceutische Groothandel" U.A. | Injection syringe |
EP0047042A3 (en) * | 1980-08-29 | 1982-03-17 | Cooperatieve Apothekers Vereeniging "De Onderlinge Pharmaceutische Groothandel" U.A. | Injection syringe |
WO1982000765A1 (en) * | 1980-08-29 | 1982-03-18 | Apothekers Coop Vereen | Hypodermic syringe |
FR2522506A1 (en) * | 1982-01-27 | 1983-09-09 | Biotherax Lab | Two-stage syringe for rectal injections - opt. has barrel and piston moulded from different materials |
US6277091B1 (en) | 1994-03-04 | 2001-08-21 | Pasteur Merieux Serums & Vaccins | Assembly for the distribution of a pharmaceutical solution in a multi-dose vial into single-dose capsules for single use |
FR2716801A1 (en) * | 1994-03-04 | 1995-09-08 | Pasteur Merieux Serums Vacc | Set for the distribution of a pharmaceutical solution in cartridges or the like, in particular after taking up a lyophilized product. |
EP0695554A3 (en) * | 1994-07-27 | 1996-05-08 | Survival Technology | Automatic injector |
US5713866A (en) * | 1994-07-27 | 1998-02-03 | Meridian Medical Technologies, Inc. | Nipple plunger |
US5902270A (en) * | 1996-11-26 | 1999-05-11 | Jentzen; S. William | Low dead space, interchangeable needle syringe |
US5865803A (en) * | 1997-05-19 | 1999-02-02 | Major; Miklos | Syringe device having a vented piston |
WO1999006086A1 (en) * | 1997-08-04 | 1999-02-11 | Shadd Daniel L Jr | A hypodermic syringe |
WO2000002466A3 (en) * | 1998-07-08 | 2000-03-16 | Wolfgang Peter Schmitz | Device for the partial colouring of hair |
US6616636B2 (en) * | 2001-02-03 | 2003-09-09 | Choon-Bal Lee | Disposable safety syringe which leaves no residual injection |
WO2008113611A1 (en) * | 2007-03-22 | 2008-09-25 | Eric Schliemann | Method and device for the metered dispensing of a medium |
US8826750B2 (en) | 2007-03-22 | 2014-09-09 | Slg Pharma Gmbh & Co. Kg | Method and device for the metered dispensing of a medium |
USRE46721E1 (en) | 2007-03-22 | 2018-02-20 | Stevanato Germany Gmbh | Method and device for the metered dispensing of a medium |
US20100089185A1 (en) * | 2007-03-22 | 2010-04-15 | Eric Schliemann | Method and device for the metered dispensing of a medium |
US20100145274A1 (en) * | 2008-12-10 | 2010-06-10 | Jan Royce | Liquid pharmaceutical identity and quantity marking |
US9242048B2 (en) * | 2009-09-16 | 2016-01-26 | Sanofi-Aventis Deutschland Gmbh | Medication delivery device and method for dispensing a medication |
US20130041344A1 (en) * | 2009-09-16 | 2013-02-14 | Sanofi-Aventis Detuschland Gmbh | Medication Delivery Device and Method for Dispensing a Medication |
JP2012000469A (en) * | 2010-06-18 | 2012-01-05 | Becton Dickinson & Co | Adjustable dose setting plunger for syringe |
US20110313397A1 (en) * | 2010-06-18 | 2011-12-22 | Howard Gold | Adjustable plunger dose stop |
US9345842B2 (en) * | 2010-06-18 | 2016-05-24 | Becton, Dickinson And Company | Adjustable dose setting plunger for syringe |
US20110313396A1 (en) * | 2010-06-18 | 2011-12-22 | Chanoch Lawrence H | Adjustable dose setting plunger for syringe |
WO2012111539A1 (en) * | 2011-02-17 | 2012-08-23 | 有限会社フチガミ器械 | Syringe |
JPWO2012111539A1 (en) * | 2011-02-17 | 2014-07-07 | 有限会社フチガミ器械 | Syringe |
US11529172B1 (en) * | 2021-11-15 | 2022-12-20 | PherDal | Fertility kits with syringes and collection jars, and method of use |
USD1015532S1 (en) | 2021-11-15 | 2024-02-20 | PherDal | Fertility syringe |
US11931075B2 (en) | 2021-11-15 | 2024-03-19 | PherDal, LLC | Fertility kits with sterile syringes and collection jars, method of sterilization and use |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: SHERWOOD MEDICAL COMPANY Free format text: MERGER;ASSIGNOR:SHERWOOD MEDICAL INDUSTRIES INC. (INTO);REEL/FRAME:004123/0634 Effective date: 19820412 |