US5624400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable self-shielding aspirating syringe
Assignee: Safety Syringes Inc
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Filing: 1995-06-06
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Granted: 1997-04-29
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Expires: 2015-06-06
Abstract
Abstract There is disclosed herein a syringe with a protector case which holds a carpule and permits the injection of fluid contained in the carpule into the patient. The syringe is molded of plastic or other suitable material which is sterilizable. The device comprises several parts including a body, protector case, needle, needle cap, plug, plunger and harpoon. The harpoon can be integrally molded on the plunger. The major components of the device preferably are molded from a suitable plastic and may be clear or of a color like or similar to a surgical glove.
Inventors
- 👤 John R. Firth
- 👤 Anthony R. Perez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:39
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/06; A61M25/0612; A61M25/0631; A61B; A61B5/00; A61B5/15; A61B5/150007; A61B5/150015; A61B5/15003; A61B5/150206; A61B5/150244; A61B5/150374; A61B5/150534; A61B5/150633; A61B5/150641; A61B5/153; A61M5/00; A61M5/178; A61M5/31; A61M5/32; A61M5/3205; A61M5/321; A61M5/3243; A61B5/150381; A61B5/150389; A61B5/150473; A61M5/3129; A61M5/3137; A61M2005/3139; A61M5/322; A61M5/3221; A61M2005/3223; A61M5/3245; A61M2005/3247; A61M2205/00; A61M2205/58; A61M2205/581; A61M2205/582; A61M2205/583; A61M2205/59; A61M5/24; A61M5/3271
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
299 words
A medical syringe for injecting medication into a human, comprising a syringe body, and a protector case movable with respect to the body to expose a needle connected to the body for injection and to cover the needle for disposal, the body having a cavity for receiving a medicine cartridge, the body having a first forward end to which the needle is attached and which needle also is capable of penetrating a cartridge for injecting medicine through the needle into a human, and the body having a second end into which a cartridge can be inserted, a protector case adapted to slidably fit on the body, and having a first open end through which a needle may extend and a second end, the case and the body have cooperating detents for facilitating placement of the case with respect to the body for uncovering and covering, respectively, an exposed end of the needle, and wherein the first open end of the case is substantially cylindrical with a plurality of radially disposed slots and wherein an outer area of the first open end thereof is in the shape of a solid annular ring, and a plunger assembly for cooperatively mating with the second end of the body and comprising a movable plunger which is movable with respect to the body for causing medicine from a cartridge to be administered through the needle, the plunger comprising a first end adapted to be manipulated by the user of the syringe and a second end adapted to be inserted into the body for engaging a stopper of a cartridge therein, the plunger being molded of plastic and the second end thereof having an integrally molded harpoon thereon which is adapted to engage and connect with a stopper of a cartridge disposed in the body.
Claim 2
Dependent Claim
299 words
A medical syringe for injecting medication into a human, comprising a syringe body, and a protector case movable with respect to the body to expose a needle connected to the body for injection and to cover the needle for disposal, the body having a cavity for receiving a medicine cartridge, the body having a first forward end to which the needle is attached and which needle also is capable of penetrating a cartridge for injecting medicine through the needle into a human, and the body having a second end into which a cartridge can be inserted, a protector case adapted to slidably fit on the body, and having a first open end through which a needle may extend and a second end, the case and the body have cooperating detents for facilitating placement of the case with respect to the body for uncovering and covering, respectively, an exposed end of the needle, and wherein the first open end of the case is substantially cylindrical with a plurality of radially disposed slots and wherein an outer area of the first open end thereof is in the shape of a solid annular ring, and a plunger assembly for cooperatively mating with the second end of the body and comprising a movable plunger which is movable with respect to the body for causing medicine from a cartridge to be administered through the needle, the plunger comprising a first end adapted to be manipulated by the user of the syringe and a second end adapted to be inserted into the body for engaging a stopper of a cartridge therein, the plunger being molded of plastic and the second end thereof having an integrally molded harpoon thereon which is adapted to engage and connect with a stopper of a cartridge disposed in the body.
Claim 3
Dependent Claim
48 words
A syringe as in claim 1 wherein the first end of the body for receiving a needle is tapered and includes a plurality of radially disposed fins adapted, when assembled with the case, to engage and extend through the slots in the first open end of the case.
Claim 4
Dependent Claim
26 words
A syringe as in claim 2 wherein the fins terminate in projections which are adapted to cooperatively mate with an open end of a needle cap.
Claim 5
Dependent Claim
324 words
A medical syringe for injecting medication into a human, comprising a syringe body, and a protector case movable with respect to the body to expose a needle connected to the body for injection and to cover the needle for disposal, the body having a cavity for receiving a medicine cartridge, the body having a first forward end to which the needle is attached and which needle also is capable of penetrating a cartridge for injecting medicine through the needle into a human, and the body having a second end into which a cartridge can be inserted, a protector case adapted to slidably fit on the body, and having a first open end through which a needle may extend and a second end, the case and the body have cooperating detents for facilitating placement of the case with respect to the body for uncovering and covering, respectively, an exposed end of the needle, and a plunger assembly for cooperatively mating with the second end of the body and comprising a movable plunger which is movable with respect to the body for causing medicine from a cartridge to be administered through the needle, the plunger comprising a first end adapted to be manipulated by the user of the syringe and a second end adapted to be inserted into the body, for engaging a stopper of a cartridge therein, the plunger being molded of plastic and the second end thereof having an integrally molded harpoon thereon which is adapted to engage and connect with a stopper of a cartridge disposed in the body, and wherein the plunger assembly further includes a plug through which the plunger extends and wherein the plug is adapted to couple with the second end of the body, the plunger including a plurality of radially disposed vanes having protrusions thereon for engaging undercut sections in a bore of the plug for facilitating positioning the plunger relative to the plug of the plunger assembly.
Claim 6
Dependent Claim
324 words
A medical syringe for injecting medication into a human, comprising a syringe body, and a protector case movable with respect to the body to expose a needle connected to the body for injection and to cover the needle for disposal, the body having a cavity for receiving a medicine cartridge, the body having a first forward end to which the needle is attached and which needle also is capable of penetrating a cartridge for injecting medicine through the needle into a human, and the body having a second end into which a cartridge can be inserted, a protector case adapted to slidably fit on the body, and having a first open end through which a needle may extend and a second end, the case and the body have cooperating detents for facilitating placement of the case with respect to the body for uncovering and covering, respectively, an exposed end of the needle, and a plunger assembly for cooperatively mating with the second end of the body and comprising a movable plunger which is movable with respect to the body for causing medicine from a cartridge to be administered through the needle, the plunger comprising a first end adapted to be manipulated by the user of the syringe and a second end adapted to be inserted into the body, for engaging a stopper of a cartridge therein, the plunger being molded of plastic and the second end thereof having an integrally molded harpoon thereon which is adapted to engage and connect with a stopper of a cartridge disposed in the body, and wherein the plunger assembly further includes a plug through which the plunger extends and wherein the plug is adapted to couple with the second end of the body, the plunger including a plurality of radially disposed vanes having protrusions thereon for engaging undercut sections in a bore of the plug for facilitating positioning the plunger relative to the plug of the plunger assembly.
Claim 7
Dependent Claim
216 words
A medical syringe for injecting medication into a human, comprising a syringe body and a protector case movable with respect to the body to expose a needle for injection of medicine into a human and to cover the needle for disposal, and a plunger and plug assembly movable for causing medication to be injected into a human, the plunger and plug assembly comprising an elongated plunger and a plug which are adapted to be cooperatively reciprocally coupled together and the plug being adapted to couple and become affixed to an open end of the body which open end is adapted to receive a cartridge containing medicine, and the plunger having a first end adapted to be manipulated by the user and a second end having an integrally molded harpoon thereon adapted to be coupled with and become affixed to a movable stopper of the cartridge, and wherein the plunger has a pair of protrusions thereon and the plug has a bore with a pair of indentations wherein the protrusions interact with the indentations during handling, packaging and shipping of the plunger and plug, and the plug having a face which interacts with the protrusions of the plunger to limit the retraction of the plunger once the harpoon thereof becomes affixed to the stopper of the cartridge.
Claim 8
Dependent Claim
216 words
A medical syringe for injecting medication into a human, comprising a syringe body and a protector case movable with respect to the body to expose a needle for injection of medicine into a human and to cover the needle for disposal, and a plunger and plug assembly movable for causing medication to be injected into a human, the plunger and plug assembly comprising an elongated plunger and a plug which are adapted to be cooperatively reciprocally coupled together and the plug being adapted to couple and become affixed to an open end of the body which open end is adapted to receive a cartridge containing medicine, and the plunger having a first end adapted to be manipulated by the user and a second end having an integrally molded harpoon thereon adapted to be coupled with and become affixed to a movable stopper of the cartridge, and wherein the plunger has a pair of protrusions thereon and the plug has a bore with a pair of indentations wherein the protrusions interact with the indentations during handling, packaging and shipping of the plunger and plug, and the plug having a face which interacts with the protrusions of the plunger to limit the retraction of the plunger once the harpoon thereof becomes affixed to the stopper of the cartridge.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-04-28 | 2000-10-28 | 2001-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-04-28 | 2004-10-28 | 2005-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-04-28 | 2008-10-28 | 2009-04-29 | $7700.00 | Window Closed / Lapsed |