CA2581671A1 - Powder and liquid mixing syringe - Google Patents
Powder and liquid mixing syringe Download PDFInfo
- Publication number
- CA2581671A1 CA2581671A1 CA 2581671 CA2581671A CA2581671A1 CA 2581671 A1 CA2581671 A1 CA 2581671A1 CA 2581671 CA2581671 CA 2581671 CA 2581671 A CA2581671 A CA 2581671A CA 2581671 A1 CA2581671 A1 CA 2581671A1
- Authority
- CA
- Canada
- Prior art keywords
- housing
- powder
- liquid
- syringe
- recited
- 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.)
- Granted
Links
- 239000007788 liquid Substances 0.000 title claims abstract 38
- 239000000843 powder Substances 0.000 title claims abstract 32
- 239000000203 mixture Substances 0.000 claims abstract 9
- 239000011888 foil Substances 0.000 claims abstract 3
- 230000004888 barrier function Effects 0.000 claims 9
- 238000007789 sealing Methods 0.000 claims 8
- 239000000853 adhesive Substances 0.000 claims 2
- 230000001070 adhesive effect Effects 0.000 claims 2
- 230000000994 depressogenic effect Effects 0.000 abstract 1
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
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
- A61M5/28—Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle
- A61M5/284—Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle comprising means for injection of two or more media, e.g. by mixing
-
- 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
- A61M2005/3117—Means preventing contamination of the medicament compartment of a syringe
-
- 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
- A61M2005/3123—Details having air entrapping or venting means, e.g. purging channels in pistons
-
- 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
- A61M5/3129—Syringe barrels
- A61M2005/3142—Modular constructions, e.g. supplied in separate pieces to be assembled by end-user
-
- 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
- A61M5/28—Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle
- A61M5/285—Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle with sealing means to be broken or opened
- A61M5/288—Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle with sealing means to be broken or opened by piercing without internal pressure increase
-
- 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
- A61M5/3129—Syringe barrels
-
- 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
- A61M5/31501—Means for blocking or restricting the movement of the rod or piston
- A61M5/31505—Integral with the syringe barrel, i.e. connected to the barrel so as to make up a single complete piece or unit
-
- 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
- A61M5/31515—Connection of piston with piston rod
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
A mixing syringe having a first sealed chamber containing a powder (powder housing) and a second sealed chamber containing a liquid (liquid housing). When the user needs to inject a patient, he or she holds the mixing syringe approximately upright and depresses a plunger. This motion causes a piercer to pierce a foil seal separating the two chambers. T he liquid then drops down into the powder housing. The liquid flows through a passage in a piston located in the powder housing, where it then comes in contact with the powder itself. As th e user continues pressing the plunger downward, the piercer comes to rest within the piston a nd seals the passage through the piston, thereby locking the piercer and piston together. The device is then ready for an injection. As the plunger is further depressed, the piston expels the powder and liquid mixture through a needle.
Claims (13)
1. A syringe allowing a user to combine a liquid and a powder to form a mixture prior to injecting said mixture into a patient, comprising:
a. a liquid housing, containing said liquid, having a first end and a second end;
b. a powder housing, containing said powder, having a first end and a second end;
c. a piercable barrier separating said second end of said liquid housing from said first end of said powder housing;
d. a needle, fluidly connected to said second end of said powder housing;
e. a plunger, having a first end and a second end;
f. a piercer, located on said second end of said plunger;
g. a plunger head, located on said first end of said plunger and extending out from said first end of said liquid housing; and h. wherein said plunger is slidably attached to said liquid housing, so that when said user presses said plunger head toward said first end of said liquid housing, said piercer pierces said piercable barrier.
a. a liquid housing, containing said liquid, having a first end and a second end;
b. a powder housing, containing said powder, having a first end and a second end;
c. a piercable barrier separating said second end of said liquid housing from said first end of said powder housing;
d. a needle, fluidly connected to said second end of said powder housing;
e. a plunger, having a first end and a second end;
f. a piercer, located on said second end of said plunger;
g. a plunger head, located on said first end of said plunger and extending out from said first end of said liquid housing; and h. wherein said plunger is slidably attached to said liquid housing, so that when said user presses said plunger head toward said first end of said liquid housing, said piercer pierces said piercable barrier.
2. A syringe as recited in claim 1, wherein:
a. said liquid housing and said powder housing are separate containers; and b. said piercable barrier comprises a first piercable seal over said second end of said liquid housing and a second piercable seal over said first end of said powder housing.
a. said liquid housing and said powder housing are separate containers; and b. said piercable barrier comprises a first piercable seal over said second end of said liquid housing and a second piercable seal over said first end of said powder housing.
3. A syringe as recited in claim 2, wherein said liquid housing and said powder housing are locked together by mechanical locking means.
4. A syringe as recited in claim 3, wherein said mechanical locking means is selected from the group comprising a linking clip, a threaded engagement, and an adhesive joint.
5. A syringe as recited in claim 1, further comprising:
a. a primary piston, slidably mounted within said powder housing;
b. a passage through said primary piston, whereby when said piercer pierces said piercable barrier, said liquid will flow through said primary piston and come in contact with said powder, thereby forming said mixture; and c. sealing means for sealing said passage when said piercer bears against said primary piston, so that when said user presses said plunger head further toward said liquid housing, said piercer pushes said primary piston toward said second end of said powder housing, thereby expelling said mixture through said needle.
a. a primary piston, slidably mounted within said powder housing;
b. a passage through said primary piston, whereby when said piercer pierces said piercable barrier, said liquid will flow through said primary piston and come in contact with said powder, thereby forming said mixture; and c. sealing means for sealing said passage when said piercer bears against said primary piston, so that when said user presses said plunger head further toward said liquid housing, said piercer pushes said primary piston toward said second end of said powder housing, thereby expelling said mixture through said needle.
6. A syringe as recited in claim 5, wherein said sealing means comprises:
a. a male conical surface on said piercer; and b. a female conical surface on said primary piston proximate said passage.
a. a male conical surface on said piercer; and b. a female conical surface on said primary piston proximate said passage.
7. A syringe as recited in claim 5, wherein said sealing means comprises:
a. a male spherical surface on said piercer; and b. a female spherical surface on said primary piston proximate said passage.
a. a male spherical surface on said piercer; and b. a female spherical surface on said primary piston proximate said passage.
8. A syringe as recited in claim 5, further comprising:
a. a secondary piston, located on said plunger between said plunger head and said piercer;
b. wherein when said user presses said plunger head toward said liquid housing, said secondary piston forces said liquid through said piercable barrier.
a. a secondary piston, located on said plunger between said plunger head and said piercer;
b. wherein when said user presses said plunger head toward said liquid housing, said secondary piston forces said liquid through said piercable barrier.
9. A syringe as recited in claim 8, wherein:
a. said secondary piston includes at least one air vent; and b. said at least one air vent meters the escape of gas contained within said liquid housing and said powder housing past said secondary piston, thereby limiting the speed at which said user can press said plunger head further toward said liquid housing.
a. said secondary piston includes at least one air vent; and b. said at least one air vent meters the escape of gas contained within said liquid housing and said powder housing past said secondary piston, thereby limiting the speed at which said user can press said plunger head further toward said liquid housing.
10. A syringe as recited in claim 9, further comprising at least one vent block, positioned to seal off said at least one vent when said secondary piston is proximate said first end of said liquid housing.
11. A syringe as recited in claim 2, further comprising:
a. a first flange proximate said second end of said liquid housing;
b. wherein said first piercable seal comprises a foil seal adhesively affixed to said liquid housing at said first flange;
c. a second flange proximate said first end of said powder housing;
b. wherein said second piercable seal comprises a foil seal adhesively affixed to said powder housing at said second flange.
a. a first flange proximate said second end of said liquid housing;
b. wherein said first piercable seal comprises a foil seal adhesively affixed to said liquid housing at said first flange;
c. a second flange proximate said first end of said powder housing;
b. wherein said second piercable seal comprises a foil seal adhesively affixed to said powder housing at said second flange.
12. A syringe as recited in claim 5, wherein:
a. said liquid housing and said powder housing are separate containers; and b. said piercable barrier comprises a first piercable seal over said second end of said liquid housing and a second piercable seal over said first end of said powder housing.
a. said liquid housing and said powder housing are separate containers; and b. said piercable barrier comprises a first piercable seal over said second end of said liquid housing and a second piercable seal over said first end of said powder housing.
13. A syringe as recited in claim 12, wherein said liquid housing and said powder housing are locked together by mechanical locking means.
15. A syringe as recited in claim 13, wherein said mechanical locking means is selected from the group comprising a linking clip, a threaded engagement, and an adhesive joint.
16. A syringe as recited in claim 12, wherein said sealing means comprises:
a. a male conical surface on said piercer; and b. a female conical surface on said primary piston proximate said passage.
17. A syringe as recited in claim 12, wherein said sealing means comprises:
a. a male spherical surface on said piercer; and b. a female spherical surface on said primary piston proximate said passage.
18. A syringe allowing a user to combine a liquid and a powder to form a mixture prior to injecting said mixture into a patient, comprising:
a. a powder housing, containing said powder, having a first end and a second end;
b. a liquid housing, containing said liquid, having a first end and a second end;
c. a piercable barrier separating said second end of said powder housing from said first end of said liquid housing;
d. a needle, fluidly connected to said second end of said liquid housing;
e. a plunger, having a first end and a second end;
f. a piercer, located on said second end of said plunger;
g. a plunger head, located on said first end of said plunger and extending out from said first end of said liquid housing; and h. wherein said plunger is slidably attached to said powder housing, so that when said user presses said plunger head toward said first end of said powder housing, said piercer pierces said piercable barrier.
19. A syringe as recited in claim 18, further comprising:
a. a primary piston, slidably mounted within said liquid housing;
b. a passage through said primary piston, whereby when said piercer pierces said piercable barrier, said powder will flow through said primary piston and come in contact with said liquid, thereby forming said mixture; and c. sealing means for sealing said passage when said piercer bears against said primary piston, so that when said user presses said plunger head further toward said powder housing, said piercer pushes said primary piston toward said second end of said liquid housing, thereby expelling said mixture through said needle.
20. A syringe as recited in claim 10, wherein said secondary piston compresses the contents of said liquid housing while said at least one vent block seals said at least one vent.
15. A syringe as recited in claim 13, wherein said mechanical locking means is selected from the group comprising a linking clip, a threaded engagement, and an adhesive joint.
16. A syringe as recited in claim 12, wherein said sealing means comprises:
a. a male conical surface on said piercer; and b. a female conical surface on said primary piston proximate said passage.
17. A syringe as recited in claim 12, wherein said sealing means comprises:
a. a male spherical surface on said piercer; and b. a female spherical surface on said primary piston proximate said passage.
18. A syringe allowing a user to combine a liquid and a powder to form a mixture prior to injecting said mixture into a patient, comprising:
a. a powder housing, containing said powder, having a first end and a second end;
b. a liquid housing, containing said liquid, having a first end and a second end;
c. a piercable barrier separating said second end of said powder housing from said first end of said liquid housing;
d. a needle, fluidly connected to said second end of said liquid housing;
e. a plunger, having a first end and a second end;
f. a piercer, located on said second end of said plunger;
g. a plunger head, located on said first end of said plunger and extending out from said first end of said liquid housing; and h. wherein said plunger is slidably attached to said powder housing, so that when said user presses said plunger head toward said first end of said powder housing, said piercer pierces said piercable barrier.
19. A syringe as recited in claim 18, further comprising:
a. a primary piston, slidably mounted within said liquid housing;
b. a passage through said primary piston, whereby when said piercer pierces said piercable barrier, said powder will flow through said primary piston and come in contact with said liquid, thereby forming said mixture; and c. sealing means for sealing said passage when said piercer bears against said primary piston, so that when said user presses said plunger head further toward said powder housing, said piercer pushes said primary piston toward said second end of said liquid housing, thereby expelling said mixture through said needle.
20. A syringe as recited in claim 10, wherein said secondary piston compresses the contents of said liquid housing while said at least one vent block seals said at least one vent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002581671A CA2581671C (en) | 2007-03-14 | 2007-03-14 | Powder and liquid mixing syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002581671A CA2581671C (en) | 2007-03-14 | 2007-03-14 | Powder and liquid mixing syringe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2581671A1 true CA2581671A1 (en) | 2008-09-14 |
| CA2581671C CA2581671C (en) | 2009-11-24 |
Family
ID=39764589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002581671A Active CA2581671C (en) | 2007-03-14 | 2007-03-14 | Powder and liquid mixing syringe |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2581671C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011035449A3 (en) * | 2009-09-22 | 2011-05-26 | Medmix System Ag | Sealed container comprising a displaceable piston |
| WO2019123489A1 (en) * | 2017-12-19 | 2019-06-27 | Matex Lab S.P.A. | Cartridge for a syringe, and corresponding syringe |
-
2007
- 2007-03-14 CA CA002581671A patent/CA2581671C/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011035449A3 (en) * | 2009-09-22 | 2011-05-26 | Medmix System Ag | Sealed container comprising a displaceable piston |
| WO2019123489A1 (en) * | 2017-12-19 | 2019-06-27 | Matex Lab S.P.A. | Cartridge for a syringe, and corresponding syringe |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2581671C (en) | 2009-11-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |