CA2183389C - Medical syringe - Google Patents
Medical syringe Download PDFInfo
- Publication number
- CA2183389C CA2183389C CA002183389A CA2183389A CA2183389C CA 2183389 C CA2183389 C CA 2183389C CA 002183389 A CA002183389 A CA 002183389A CA 2183389 A CA2183389 A CA 2183389A CA 2183389 C CA2183389 C CA 2183389C
- Authority
- CA
- Canada
- Prior art keywords
- syringe
- retaining ring
- cap
- safety cap
- connecting pieces
- 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
Links
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
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
-
- 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
- A61M2005/3103—Leak prevention means for distal end of syringes, i.e. syringe end for mounting a needle
- A61M2005/3104—Caps for syringes without needle
-
- 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
- A61M2005/3103—Leak prevention means for distal end of syringes, i.e. syringe end for mounting a needle
- A61M2005/3106—Plugs for syringes without needle
-
- 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
- A61M2005/3118—Means preventing contamination of the medicament compartment of a syringe via the distal end of a syringe, i.e. syringe end for mounting a needle cannula
- A61M2005/312—Means preventing contamination of the medicament compartment of a syringe via the distal end of a syringe, i.e. syringe end for mounting a needle cannula comprising sealing means, e.g. severable caps, to be removed prior to injection by, e.g. tearing or twisting
-
- 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
- A61M5/3134—Syringe barrels characterised by constructional features of the distal end, i.e. end closest to the tip of the needle cannula
-
- 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
- A61M5/50—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 having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
- A61M5/5086—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 having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile for indicating if defective, used, tampered with or unsterile
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S215/00—Bottles and jars
- Y10S215/03—Medical
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S604/00—Surgery
- Y10S604/905—Aseptic connectors or couplings, e.g. frangible, piercable
Abstract
The invention relates to a medical syringe provided with a needle attachment placed at the mouthpiece of the syringe cylinder and closed until it is used by a plug in the form, for example, of a tip cap, the attachment being designed to receive a cannula. The needle attachment is retained at the mouthpiece and sealed against the syringe cylinder by a screw cap. The screw cap is locked on to the mouthpiece by a retaining ring pushed home on to it. The retaining ring carries a firmly attached but detachable safety cap, which surrounds the needle attachment and the plug and consists essentially of a hollow cylinder closed at least in part by an end plate at the forward end not adjoining the syringe cylinder. The safety cap and the retaining ring form a ring slot between them and are connected through a number of connecting pieces; between each pair of connecting pieces there is at least one spacer firmly attached to the safety cap or the retaining ring and with its free end resting against the retaining ring or the safety cap or facing the one or the other with a small gap.
Description
2~~3~~9 Medical svrinae The invention relates to a medical syringe with a needle attachment at the mouthpiece of the syringe cylinder, closed until the syringe is to be used by a plug which may be in the s form of a tip cap, the needle attachment being designed to receive a cannula and secured to the mouthpiece of the cylinder and sealed against the cylinder by a screw cap; the screw cap is locked on to the mouthpiece of the cylinder by a retaining ring pushed home on to it, while the retaining ring io carries a firmly attached but detachable safety cap which surrounds the needle attachment and the plug and consists essentially of a hollow cylinder which is at least partially closed at the end distant from the syringe cylinder by an end plate.
15 A syringe of this type is known for example from EP 0 397 951 and has proved very satisfactory in practice.
However, under certain circumstances it may happen that the breaking point formed between the retaining ring and the safety cap may already release or be damaged even when the 2o syringes are being assembled, if pressure from the safety cap forces the retaining ring on to the needle attachment.
An object of the invention is to design a syringe of the type referred to at the outset in such a way that it cannot suffer damage of this kind.
= 2s According to one aspect of the present invention, there is provided a medical syringe comprising a syringe cylinder provided with an outlet, the syringe having a needle attachment positioned at the outlet of the syringe cylinder that is kept closed, until the syringe is used, by a plug, the 3o attachment being designed to receive a cannula and being retained at the outlet and sealed against the syringe cylinder by a screw cap, and the screw cap being locked on to the outlet by a retaining ring pushed home around the outlet; the retaining ring carries a firmly attached but detachable safety 35 cap, which surrounds the needle attachment and the plug and comprises a hollow cylinder closed at least in part by an end plate at a forward end not adjoining the syringe cylinder, such that the safety cap and the retaining ring form a ring slot between them and are connected through a number of connecting pieces, while between each pair of connecting pieces there is at least one spacer firmly attached to the safety cap or the retaining ring and with its free end resting against the retaining ring or the safety cap or facing the one or the other with a small gap.
io The advantage of the invention is essentially the fact that, when the retaining ring is pushed on to the needle attachment the spacers transmit the force exerted through the safety cap to the retaining ring without imposing loads on the connecting pieces which could cause them to separate. But as the spacers do not form a firm connection between the safety cap and the retaining ring only the connecting pieces serve to ensure retention of the safety cap before the syringe is used, and they can be designed to ensure adequate retention of the safety cap without making it necessary to use excessive force 2o to remove the safety cap. By separating the functions, that is, by providing the connecting pieces as a detachable connection between the safety cap and the retaining ring and, on the other hand, having the force transmitted through the spacers without loading the connecting pieces, it is possible 2s to optimize the characteristics of each without having the one affect the other.
In case it proves necessary, especially because of production considerations, to narrow the slot between the spacers and the adjoining part, that is the retaining ring or 3o the safety cap, a preferred embodiment of the invention places the connecting pieces obliquely along an imaginary helix.
This gives the connecting pieces adequate elasticity to ensure that they will prevent damage if the spacers, when pressure is applied, are temporarily displaced so that they rest against 35 the adjoining part.
For the purposes of the invention it is also advantageous if the connecting pieces are distributed uniformly over the circumference. In addition, it has been found advantageous to taper the connecting pieces towards the retaining ring. In s this connection it is advantageous to give the connecting pieces an essentially pyramidal shape.
It is useful to design the spacers with a trapezoid cross-section and to taper them towards the retaining ring.
An additional useful embodiment of the invention provides io for the retaining ring to fit exactly around the cap and to be retained along the line of the axis by a stop intervening between the retaining ring and the screw cap. In a very simplified embodiment the stop may take the form of a projection on the inner surface of the retaining ring; this i5 projection catches in a ring groove in the screw cap and engages the screw cap at its rear end adjoining the syringe cylinder.
In order to permit a check as to whether an assembled syringe has a tip cap on its needle attachment the invention 2o provides for the safety cap to have an axially aligned hole on its face the inside diameter of which is less than the exterior diameter of the tip cap. Moreover, if, as is advantageous, the inner side of the face of the safety cap rests against the tip cap, this will ensure that the tip cap 2s cannot work itself loose from the needle attachment.
Finally, it is also possible to have the safety cap tapered towards its forward end in the form of a truncated cone.
An embodiment of the invention is described in detail in 3o the following with reference to the accompanying drawings, in which:-Fig. 1 is a longitudinal section of a syringe in accordance with a preferred form of the invention;
Fig. 2 is side elevation of the embodiment of Fig. 1 3s showing the safety cap with the retaining ring; and Fig. 3 is a section through the embodiment shown in Fig. 2 taken along the line A-A.
The syringe of the preferred embodiment, which is only partially illustrated in the drawings, is intended for medical s purposes and consists of a cylinder 2 with a cylinder mouthpiece 1 to which a needle attachment 3 is secured. The rear end of this needle attachment 3 engages in the mouthpiece 1 with clean cut lamellas and, if used with pre-filled syringes, is closed until it is to be used by a plug 6 which io may take the form of a tip cap. The syringe cylinder, moreover, has the usual refinement of finger support, not shown in detail here, and at least one stopper activated by a piston rod. If the syringe is designed to have two chambers, the cylinder also has a bypass and an additional stopper which i5 separates the pharmaceutical preparation, inserted before use in freeze-dried form, from the solvent, which before the syringe is used is fed through the bypass into the forward chamber adjoining the cannula.
The needle attachment 3 is fitted with a cone to receive 2o a cannula, the needle attachment 3 being retained at the cylinder mouthpiece 1 and sealed against the syringe cylinder 2 by a screw cap 4. In the version illustrated, the screw cap 4 also surrounds the needle attachment 3 in the vicinity of the cone.
2s The screw cap 4 is locked on to the mouthpiece 1 by a retaining ring 9 which is pushed home on to it. The retaining ring 9 carries a firmly attached but detachable safety cap 7, which surrounds the needle attachment 3 and the tip cap 6 and consists essentially of a hollow cylinder.
ao The safety cap 7 and the retaining ring 9 form between them a ring slot 8 (see Fig. 2) and are connected with each other through a number of connecting pieces 10. Between each pair of connecting pieces 10, a spacer 11 is placed, which is firmly attached to the safety cap 7 and whose free end faces 35 the retaining ring 9 with a small gap.
15 A syringe of this type is known for example from EP 0 397 951 and has proved very satisfactory in practice.
However, under certain circumstances it may happen that the breaking point formed between the retaining ring and the safety cap may already release or be damaged even when the 2o syringes are being assembled, if pressure from the safety cap forces the retaining ring on to the needle attachment.
An object of the invention is to design a syringe of the type referred to at the outset in such a way that it cannot suffer damage of this kind.
= 2s According to one aspect of the present invention, there is provided a medical syringe comprising a syringe cylinder provided with an outlet, the syringe having a needle attachment positioned at the outlet of the syringe cylinder that is kept closed, until the syringe is used, by a plug, the 3o attachment being designed to receive a cannula and being retained at the outlet and sealed against the syringe cylinder by a screw cap, and the screw cap being locked on to the outlet by a retaining ring pushed home around the outlet; the retaining ring carries a firmly attached but detachable safety 35 cap, which surrounds the needle attachment and the plug and comprises a hollow cylinder closed at least in part by an end plate at a forward end not adjoining the syringe cylinder, such that the safety cap and the retaining ring form a ring slot between them and are connected through a number of connecting pieces, while between each pair of connecting pieces there is at least one spacer firmly attached to the safety cap or the retaining ring and with its free end resting against the retaining ring or the safety cap or facing the one or the other with a small gap.
io The advantage of the invention is essentially the fact that, when the retaining ring is pushed on to the needle attachment the spacers transmit the force exerted through the safety cap to the retaining ring without imposing loads on the connecting pieces which could cause them to separate. But as the spacers do not form a firm connection between the safety cap and the retaining ring only the connecting pieces serve to ensure retention of the safety cap before the syringe is used, and they can be designed to ensure adequate retention of the safety cap without making it necessary to use excessive force 2o to remove the safety cap. By separating the functions, that is, by providing the connecting pieces as a detachable connection between the safety cap and the retaining ring and, on the other hand, having the force transmitted through the spacers without loading the connecting pieces, it is possible 2s to optimize the characteristics of each without having the one affect the other.
In case it proves necessary, especially because of production considerations, to narrow the slot between the spacers and the adjoining part, that is the retaining ring or 3o the safety cap, a preferred embodiment of the invention places the connecting pieces obliquely along an imaginary helix.
This gives the connecting pieces adequate elasticity to ensure that they will prevent damage if the spacers, when pressure is applied, are temporarily displaced so that they rest against 35 the adjoining part.
For the purposes of the invention it is also advantageous if the connecting pieces are distributed uniformly over the circumference. In addition, it has been found advantageous to taper the connecting pieces towards the retaining ring. In s this connection it is advantageous to give the connecting pieces an essentially pyramidal shape.
It is useful to design the spacers with a trapezoid cross-section and to taper them towards the retaining ring.
An additional useful embodiment of the invention provides io for the retaining ring to fit exactly around the cap and to be retained along the line of the axis by a stop intervening between the retaining ring and the screw cap. In a very simplified embodiment the stop may take the form of a projection on the inner surface of the retaining ring; this i5 projection catches in a ring groove in the screw cap and engages the screw cap at its rear end adjoining the syringe cylinder.
In order to permit a check as to whether an assembled syringe has a tip cap on its needle attachment the invention 2o provides for the safety cap to have an axially aligned hole on its face the inside diameter of which is less than the exterior diameter of the tip cap. Moreover, if, as is advantageous, the inner side of the face of the safety cap rests against the tip cap, this will ensure that the tip cap 2s cannot work itself loose from the needle attachment.
Finally, it is also possible to have the safety cap tapered towards its forward end in the form of a truncated cone.
An embodiment of the invention is described in detail in 3o the following with reference to the accompanying drawings, in which:-Fig. 1 is a longitudinal section of a syringe in accordance with a preferred form of the invention;
Fig. 2 is side elevation of the embodiment of Fig. 1 3s showing the safety cap with the retaining ring; and Fig. 3 is a section through the embodiment shown in Fig. 2 taken along the line A-A.
The syringe of the preferred embodiment, which is only partially illustrated in the drawings, is intended for medical s purposes and consists of a cylinder 2 with a cylinder mouthpiece 1 to which a needle attachment 3 is secured. The rear end of this needle attachment 3 engages in the mouthpiece 1 with clean cut lamellas and, if used with pre-filled syringes, is closed until it is to be used by a plug 6 which io may take the form of a tip cap. The syringe cylinder, moreover, has the usual refinement of finger support, not shown in detail here, and at least one stopper activated by a piston rod. If the syringe is designed to have two chambers, the cylinder also has a bypass and an additional stopper which i5 separates the pharmaceutical preparation, inserted before use in freeze-dried form, from the solvent, which before the syringe is used is fed through the bypass into the forward chamber adjoining the cannula.
The needle attachment 3 is fitted with a cone to receive 2o a cannula, the needle attachment 3 being retained at the cylinder mouthpiece 1 and sealed against the syringe cylinder 2 by a screw cap 4. In the version illustrated, the screw cap 4 also surrounds the needle attachment 3 in the vicinity of the cone.
2s The screw cap 4 is locked on to the mouthpiece 1 by a retaining ring 9 which is pushed home on to it. The retaining ring 9 carries a firmly attached but detachable safety cap 7, which surrounds the needle attachment 3 and the tip cap 6 and consists essentially of a hollow cylinder.
ao The safety cap 7 and the retaining ring 9 form between them a ring slot 8 (see Fig. 2) and are connected with each other through a number of connecting pieces 10. Between each pair of connecting pieces 10, a spacer 11 is placed, which is firmly attached to the safety cap 7 and whose free end faces 35 the retaining ring 9 with a small gap.
The connecting pieces 10 form a rated breaking point making it possible, for the purpose of attaching the cannula, to easily break off the safety cap 7 which ensures that the syringe will remain undamaged until it is to be used.
On the other hand, when the syringe is assembled, with the retaining ring 9 being pushed on to the needle attachment 3 or the screw cap 4 so that the force is transmitted through the safety cap 7, the spacers 11 ensure that the connecting pieces 10 are not so loaded that any one or even all of them io break off, as the force is transmitted essentially through the spacers 11. The spacers 11 can therefore be designed to permit an optimal transmission of force, while the connecting pieces 10 can be optimized both to ensure that the safety cap 7 is adequately secured and to be detachable without significant difficulty before the syringe is used.
As it is not as a rule possible, for reasons associated with production technology, to provide a slot between the spacer 11 and the retaining ring 9, the connecting pieces 10 are aligned obliquely along an imaginary helix. The 2o connecting pieces 10 are moreover uniformly distributed around the circumference. As can be seen from Fig. 2, the connecting pieces 10 are tapered towards the retaining ring 9 and are essentially pyramidal in shape.
The spacers 11, on the other hand, have a trapezoidal cross-section and they too are tapered towards the retaining ring 9.
The retaining ring 9 fits exactly around the screw cap 4 and the alignment of its axis is maintained by a stop 13 engaging with the screw cap 4. This stop 13 is formed by a 3o projection on the interior surface of the retaining ring 9 which engages with the screw cap 4 at its rear end adjoining the syringe cylinder 2.
In order to make it possible to check the assembled syringe to see whether the plug 6, that is, the tip cap, is placed on the needle attachment, the safety cap 7 has an axially aligned hole 14 on its forward side, whose inner diameter is less than the exterior diameter of the tip cap 6, so that the latter cannot be separated from the needle attachment 3 until the safety cap 7 is detached. In addition, s to prevent the tip cap 6 from working loose it is advantageous to place the safety cap with the inner side of its forward side 7.1 resting against the tip cap. For this purpose, it is also useful to have the safety cap 7 tapered towards its forward end in the form of a truncated cone, in order to io ensure that the tip cap 6 is centred.
On the other hand, when the syringe is assembled, with the retaining ring 9 being pushed on to the needle attachment 3 or the screw cap 4 so that the force is transmitted through the safety cap 7, the spacers 11 ensure that the connecting pieces 10 are not so loaded that any one or even all of them io break off, as the force is transmitted essentially through the spacers 11. The spacers 11 can therefore be designed to permit an optimal transmission of force, while the connecting pieces 10 can be optimized both to ensure that the safety cap 7 is adequately secured and to be detachable without significant difficulty before the syringe is used.
As it is not as a rule possible, for reasons associated with production technology, to provide a slot between the spacer 11 and the retaining ring 9, the connecting pieces 10 are aligned obliquely along an imaginary helix. The 2o connecting pieces 10 are moreover uniformly distributed around the circumference. As can be seen from Fig. 2, the connecting pieces 10 are tapered towards the retaining ring 9 and are essentially pyramidal in shape.
The spacers 11, on the other hand, have a trapezoidal cross-section and they too are tapered towards the retaining ring 9.
The retaining ring 9 fits exactly around the screw cap 4 and the alignment of its axis is maintained by a stop 13 engaging with the screw cap 4. This stop 13 is formed by a 3o projection on the interior surface of the retaining ring 9 which engages with the screw cap 4 at its rear end adjoining the syringe cylinder 2.
In order to make it possible to check the assembled syringe to see whether the plug 6, that is, the tip cap, is placed on the needle attachment, the safety cap 7 has an axially aligned hole 14 on its forward side, whose inner diameter is less than the exterior diameter of the tip cap 6, so that the latter cannot be separated from the needle attachment 3 until the safety cap 7 is detached. In addition, s to prevent the tip cap 6 from working loose it is advantageous to place the safety cap with the inner side of its forward side 7.1 resting against the tip cap. For this purpose, it is also useful to have the safety cap 7 tapered towards its forward end in the form of a truncated cone, in order to io ensure that the tip cap 6 is centred.
Claims (13)
1. A medical syringe comprising a syringe cylinder provided with an outlet, the syringe having a needle attachment positioned at the outlet of the syringe cylinder that is kept closed, until the syringe is used, by a plug, the attachment being designed to receive a cannula and being retained at the outlet and sealed against the syringe cylinder by a screw cap, and the screw cap being locked on to the outlet by a retaining ring pushed home around the outlet; the retaining ring carries a firmly attached but detachable safety cap, which surrounds the needle attachment and the plug and comprises a hollow cylinder closed at least in part by an end plate at a forward end not adjoining the syringe cylinder, such that the safety cap and the retaining ring form a ring slot between them and are connected through a radial arrangement of a number of connecting pieces, each pair of connecting pieces having at least one spacer therebetween.
2. A medical syringe as claimed in claim 1, wherein the at least one spacer is firmly attached to the safety cap and has a free end resting against the retaining ring or facing the retaining ring with a small gap.
3. A medical syringe as claimed in claim 1, wherein the at least one spacer is firmly attached to the retaining ring and has a free end resting against the safety cap or facing the safety cap with a small gap.
4. A syringe as claimed in claim 1, 2 or 3, wherein the connecting pieces are aligned obliquely along an imaginary helix.
5. A syringe as claimed in claim 1, 2 or 3, wherein the connecting pieces are distributed uniformly around a circumference of said safety cap or retaining ring.
6. A syringe as claimed in any one of claims 1-5, wherein the connecting pieces are tapered inwardly towards the retaining ring.
7. A syringe as claimed in claim 6, wherein the connecting pieces are essentially pyramidal in shape.
8. A syringe as claimed in any one of claims 1-5 or claim 7, wherein the spacers have a trapezoidal cross-section and are tapered inwardly towards the retaining ring.
9. A syringe as claimed in any one of claims 1-5 or claim 7, wherein the retaining ring fits exactly around the cap and a desired alignment of a longitudinal axis of the ring is maintained by a stop intervening between the retaining ring and the screw cap.
10. A syringe as claimed in claim 9, wherein the stop consists of a projection on an inner surface of the retaining ring which catches in a groove in the cap or engages the latter at its rear end adjoining the syringe cylinder.
11. A syringe as claimed in any one of claims 1-5, claim 7 or claim 10, wherein the safety cap has an axially aligned hole on its forward side, an inner diameter of the hole being less than an exterior diameter of the plug.
12. A syringe as claimed in any one of claims 1-5, claim 7 or claim 10, wherein the inner surface of the forward side of the safety cap rests against the tip cap.
13. A syringe as claimed in any one of claims 1-5, claim 7 or claim 10, wherein the safety cap is tapered towards its front end in the form of a truncated cone.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19537163A DE19537163C1 (en) | 1995-10-06 | 1995-10-06 | Syringe for medical purposes |
| DE19537163.1-35 | 1995-10-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2183389A1 CA2183389A1 (en) | 1997-04-07 |
| CA2183389C true CA2183389C (en) | 2005-07-26 |
Family
ID=7774133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002183389A Expired - Lifetime CA2183389C (en) | 1995-10-06 | 1996-08-15 | Medical syringe |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US5785691A (en) |
| EP (1) | EP0766975B1 (en) |
| JP (1) | JP2932169B2 (en) |
| AT (1) | ATE221792T1 (en) |
| CA (1) | CA2183389C (en) |
| DE (2) | DE19537163C1 (en) |
| DK (1) | DK0766975T3 (en) |
| ES (1) | ES2177696T3 (en) |
| PT (1) | PT766975E (en) |
Families Citing this family (89)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6196998B1 (en) | 1994-12-12 | 2001-03-06 | Becton Dickinson And Company | Syringe and tip cap assembly |
| US5624402A (en) | 1994-12-12 | 1997-04-29 | Becton, Dickinson And Company | Syringe tip cap |
| GB9700177D0 (en) * | 1997-01-07 | 1997-02-26 | Nycomed Imaging As | Container |
| DE19751219A1 (en) * | 1997-11-19 | 1999-05-27 | Vetter & Co Apotheker | Syringe, especially prefilled syringe, or carpule |
| US5921419A (en) * | 1998-05-04 | 1999-07-13 | Bracco Research Usa | Universal stopper |
| USD431864S (en) * | 1998-11-24 | 2000-10-10 | Becton Dickinson And Company | Tamper evident cap for a tip cap |
| USD430293S (en) * | 1998-11-24 | 2000-08-29 | Becton Dickinson And Company | Tamper evident cap for a tip cap |
| AT4008U1 (en) * | 1999-02-23 | 2000-12-27 | Immuno Ag | CAP FOR SYRINGE BODY, SYRINGE BODY WITH SUCH A CAP AND CANNULA CONNECTING PART FOR SUCH A CAP |
| DE19909824A1 (en) | 1999-03-05 | 2000-09-07 | Vetter & Co Apotheker | Syringe for medical purposes and assembly method |
| DE19955652A1 (en) | 1999-11-19 | 2001-06-13 | Schott Glas | Closure for a prefillable disposable syringe |
| JP3591636B2 (en) * | 2000-04-03 | 2004-11-24 | ニプロ株式会社 | Prefilled syringe |
| US6485460B2 (en) | 2001-01-12 | 2002-11-26 | Bracco Diagnostics, Inc. | Tamper evident syringe barrel |
| CA2475573C (en) | 2002-02-11 | 2013-03-26 | Antares Pharma, Inc. | Intradermal injector |
| WO2003070296A2 (en) * | 2002-02-15 | 2003-08-28 | Antares Pharma, Inc. | Injector with bypass channel |
| US6821267B2 (en) | 2002-03-07 | 2004-11-23 | Baxter International | Luer tip cap having reduced removal force |
| US6821268B2 (en) | 2002-03-30 | 2004-11-23 | Bracco Diagnostics Inc. | Tamper evident overap of a container |
| US20040225258A1 (en) * | 2002-03-30 | 2004-11-11 | Ernest Balestracci | Tamper evident overcap for a container |
| DE10247965A1 (en) * | 2002-10-15 | 2004-05-06 | Transcoject Gesellschaft für medizinische Geräte mbH & Co KG | Tamper-evident closure for a syringe |
| DE10254321A1 (en) | 2002-11-21 | 2004-06-17 | Arzneimittel Gmbh Apotheker Vetter & Co. Ravensburg | Pre-filled syringe |
| DE10340613A1 (en) * | 2003-08-29 | 2005-03-24 | Primojex Gmbh | Device for injecting an injectable product |
| JPWO2006030525A1 (en) * | 2004-09-13 | 2008-05-08 | 株式会社ジェイ・エム・エス | Protective cap, injection needle with protective cap, and medical device with protective cap |
| DE102004055453A1 (en) * | 2004-11-17 | 2006-05-24 | Schering Ag | originality closure |
| BRPI0614025A2 (en) | 2005-01-24 | 2012-12-25 | Antares Pharma Inc | jet injectors |
| JP4647419B2 (en) * | 2005-07-20 | 2011-03-09 | ゲレスハイマー ビュンデ ゲゼルシャフト ミット ベシュレンクテル ハフツング | Syringe closure and method for making the syringe closure |
| DE102005052545A1 (en) * | 2005-11-02 | 2007-05-03 | Schering Ag | Closure for medical syringe, has syringe cylinder and connected syringe neck at distal end whereby syringe neck has fixable adapter in which screw cap is fixable |
| WO2007131013A1 (en) | 2006-05-03 | 2007-11-15 | Antares Pharma, Inc. | Two-stage reconstituting injector |
| FR2927552B1 (en) * | 2008-02-19 | 2011-05-27 | Becton Dickinson France | SPRAYER, IN PARTICULAR FOR MEDICAL USE |
| DE102008013198B4 (en) * | 2008-03-07 | 2011-07-14 | Bayer Schering Pharma Aktiengesellschaft, 13353 | Tamper evident closure with retaining pin |
| JP5611208B2 (en) | 2008-08-05 | 2014-10-22 | アンタレス・ファーマ・インコーポレーテッド | Multiple dose injection device |
| US8574214B2 (en) | 2008-08-30 | 2013-11-05 | Sanofi-Aventis Deutschland Gmbh | Cartridge and needle system therefor |
| KR101597672B1 (en) | 2009-03-20 | 2016-02-25 | 앤태어스 파머, 인코퍼레이티드 | Hazardous agent injection system |
| WO2011022609A1 (en) * | 2009-08-21 | 2011-02-24 | Becton Dickinson France Sas | Tamper evident tip cap and syringe |
| US9402967B1 (en) | 2010-05-27 | 2016-08-02 | Medical Device Engineering, Llc | Tamper evident cap assembly |
| US9498570B2 (en) | 2010-10-25 | 2016-11-22 | Bayer Healthcare Llc | Bladder syringe fluid delivery system |
| WO2012061140A1 (en) * | 2010-10-25 | 2012-05-10 | Medrad, Inc. | Bladder syringe fluid delivery system |
| US8353869B2 (en) | 2010-11-02 | 2013-01-15 | Baxa Corporation | Anti-tampering apparatus and method for drug delivery devices |
| US8864708B1 (en) | 2010-12-03 | 2014-10-21 | Medical Device Engineering, LLC. | Tamper indicating closure assembly |
| US9199749B1 (en) | 2011-04-26 | 2015-12-01 | Medical Device Engineering, LLC. | Assembly and system for connecting a closure to a syringe |
| US9220660B2 (en) | 2011-07-15 | 2015-12-29 | Antares Pharma, Inc. | Liquid-transfer adapter beveled spike |
| US8496619B2 (en) | 2011-07-15 | 2013-07-30 | Antares Pharma, Inc. | Injection device with cammed ram assembly |
| WO2013059563A1 (en) | 2011-10-19 | 2013-04-25 | Medrad, Inc. | Sterility retaining medical connector assembly and method |
| EP2822621B1 (en) | 2012-03-07 | 2016-09-21 | West Pharmaceutical Services, Inc. | Low radial profile needle safety device |
| US10004854B2 (en) | 2012-03-07 | 2018-06-26 | West Pharmaceutical Services, Inc. | Low radial profile needle safety device |
| US10099012B2 (en) | 2012-04-04 | 2018-10-16 | Boehringer Ingelheim International Gmbh | Closure system for an applicator attachment on a container for pharmaceutical preparations, and use, container with closure system, syringe for medical purposes, and method of assembly |
| CA2868500C (en) | 2012-04-06 | 2020-04-21 | Antares Pharma, Inc. | Needle assisted jet injection administration of testosterone compositions |
| US9180252B2 (en) | 2012-04-20 | 2015-11-10 | Bayer Medical Care Inc. | Bellows syringe fluid delivery system |
| WO2013169804A1 (en) | 2012-05-07 | 2013-11-14 | Antares Pharma, Inc. | Needle assisted jet injection device having reduced trigger force |
| US9311592B1 (en) | 2012-08-31 | 2016-04-12 | Medical Device Engineering, LLC. | Support and closure assembly for discharge port of a syringe and tracking system therefore |
| EP4349383A2 (en) | 2013-02-11 | 2024-04-10 | Antares Pharma, Inc. | Needle assisted jet injection device having reduced trigger force |
| US9821152B1 (en) | 2013-03-04 | 2017-11-21 | Medical Device Engineering, LLC. | Closure assembly |
| WO2014164786A1 (en) | 2013-03-11 | 2014-10-09 | Madsen Patrick | Dosage injector with pinion system |
| KR20160021194A (en) | 2013-06-14 | 2016-02-24 | 바이엘 메디컬 케어 인크. | Portable fluid delivery system |
| US9855191B1 (en) | 2013-12-09 | 2018-01-02 | Jonathan J. Vitello | Tamper evident shield assembly with tracking |
| AU2015204608C1 (en) | 2014-01-10 | 2021-02-11 | Bayer Healthcare Llc | Single-use disposable set connector |
| US10912898B1 (en) | 2014-02-03 | 2021-02-09 | Medical Device Engineering Llc | Tamper evident cap for medical fitting |
| US10207099B1 (en) | 2014-02-21 | 2019-02-19 | Patrick Vitello | Closure assembly for medical fitting |
| US10166347B1 (en) | 2014-07-18 | 2019-01-01 | Patrick Vitello | Closure assembly for a medical device |
| US10507319B2 (en) | 2015-01-09 | 2019-12-17 | Bayer Healthcare Llc | Multiple fluid delivery system with multi-use disposable set and features thereof |
| US10300263B1 (en) | 2015-02-27 | 2019-05-28 | Timothy Brandon Hunt | Closure assembly for a medical connector |
| US10166343B1 (en) | 2015-03-13 | 2019-01-01 | Timothy Brandon Hunt | Noise evident tamper cap |
| US10315024B1 (en) | 2015-03-19 | 2019-06-11 | Patick Vitello | Torque limiting closure assembly |
| US10668215B2 (en) | 2015-12-30 | 2020-06-02 | Baxter Corporation Englewood | Tip cap for automatic syringe filling apparatus |
| CA3027532A1 (en) | 2016-06-15 | 2017-12-21 | Bayer Healthcare Llc | Multi-use disposable system and syringe therefor |
| US11097071B1 (en) | 2016-12-14 | 2021-08-24 | International Medical Industries Inc. | Tamper evident assembly |
| US10307548B1 (en) | 2016-12-14 | 2019-06-04 | Timothy Brandon Hunt | Tracking system and method for medical devices |
| US10953162B1 (en) | 2016-12-28 | 2021-03-23 | Timothy Brandon Hunt | Tamper evident closure assembly |
| US10758684B1 (en) | 2017-03-03 | 2020-09-01 | Jonathan J. Vitello | Tamper evident assembly |
| US11040149B1 (en) | 2017-03-30 | 2021-06-22 | International Medical Industries | Tamper evident closure assembly for a medical device |
| US10888672B1 (en) | 2017-04-06 | 2021-01-12 | International Medical Industries, Inc. | Tamper evident closure assembly for a medical device |
| US10898659B1 (en) | 2017-05-19 | 2021-01-26 | International Medical Industries Inc. | System for handling and dispensing a plurality of products |
| US10933202B1 (en) | 2017-05-19 | 2021-03-02 | International Medical Industries Inc. | Indicator member of low strength resistance for a tamper evident closure |
| US11541180B1 (en) | 2017-12-21 | 2023-01-03 | Patrick Vitello | Closure assembly having a snap-fit construction |
| US11278681B1 (en) | 2018-02-20 | 2022-03-22 | Robert Banik | Tamper evident adaptor closure |
| US11413406B1 (en) | 2018-03-05 | 2022-08-16 | Jonathan J. Vitello | Tamper evident assembly |
| US11779520B1 (en) | 2018-07-02 | 2023-10-10 | Patrick Vitello | Closure for a medical dispenser including a one-piece tip cap |
| US11793987B1 (en) | 2018-07-02 | 2023-10-24 | Patrick Vitello | Flex tec closure assembly for a medical dispenser |
| US11857751B1 (en) | 2018-07-02 | 2024-01-02 | International Medical Industries Inc. | Assembly for a medical connector |
| US11690994B1 (en) | 2018-07-13 | 2023-07-04 | Robert Banik | Modular medical connector |
| US11426328B1 (en) | 2018-08-31 | 2022-08-30 | Alexander Ollmann | Closure for a medical container |
| USD948713S1 (en) | 2019-09-03 | 2022-04-12 | International Medical Industries, Inc. | Asymmetrical self righting tip cap |
| US11471610B1 (en) | 2018-10-18 | 2022-10-18 | Robert Banik | Asymmetrical closure for a medical device |
| USD903865S1 (en) | 2018-11-19 | 2020-12-01 | International Medical Industries, Inc. | Self-righting tip cap |
| US11305072B2 (en) | 2018-11-28 | 2022-04-19 | Fresenius Kabi Usa, Llc | Tamper evident assembly for syringes |
| US11911339B1 (en) | 2019-08-15 | 2024-02-27 | Peter Lehel | Universal additive port cap |
| US11697527B1 (en) * | 2019-09-11 | 2023-07-11 | Logan Hendren | Tamper evident closure assembly |
| US11357588B1 (en) | 2019-11-25 | 2022-06-14 | Patrick Vitello | Needle packaging and disposal assembly |
| US11904149B1 (en) | 2020-02-18 | 2024-02-20 | Jonathan Vitello | Oral tamper evident closure with retained indicator |
| US11523970B1 (en) | 2020-08-28 | 2022-12-13 | Jonathan Vitello | Tamper evident shield |
| US11872187B1 (en) | 2020-12-28 | 2024-01-16 | Jonathan Vitello | Tamper evident seal for a vial cover |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4240425A (en) * | 1978-10-23 | 1980-12-23 | American Hospital Supply Corporation | Syringe with plug type needle hub lock |
| CA1153335A (en) * | 1980-11-24 | 1983-09-06 | Jean P. Richard | Pilferproof cap |
| US4471878A (en) * | 1982-11-30 | 1984-09-18 | Johnsen & Jorgensen (Plastics) Ltd. | Child and tamper resistant closure |
| WO1986003126A1 (en) * | 1984-11-21 | 1986-06-05 | Ewald Pickhard | Injection syringe |
| US4667837A (en) * | 1986-06-05 | 1987-05-26 | International Medical Industries, Incorporated | Tamper proof cap |
| AT394950B (en) * | 1986-07-11 | 1992-07-27 | Pickhard Ewald | INJECTION SYRINGE WITH NEEDLE PROTECTIVE CAP |
| GB8705040D0 (en) * | 1987-03-04 | 1987-04-08 | Cope Allman Plastics Ltd | Tamper-evident closures |
| US4807771A (en) * | 1987-09-11 | 1989-02-28 | Kerr Glass Manufacturing Corporation | Tamper-evident closure |
| ES2056244T3 (en) * | 1989-05-17 | 1994-10-01 | Vetter & Co Apotheker | SYRINGE FOR MEDICAL APPLICATIONS. |
| EP0441112B1 (en) * | 1990-02-05 | 1994-01-12 | Lynes Holding S.A. | Screw cap |
| US5273173A (en) | 1990-02-05 | 1993-12-28 | Lynes Holding S.A. | Screw top |
| JP3383966B2 (en) * | 1994-05-27 | 2003-03-10 | ニプロ株式会社 | Prefilled syringe |
-
1995
- 1995-10-06 DE DE19537163A patent/DE19537163C1/en not_active Expired - Fee Related
-
1996
- 1996-06-19 AT AT96109807T patent/ATE221792T1/en active
- 1996-06-19 EP EP96109807A patent/EP0766975B1/en not_active Expired - Lifetime
- 1996-06-19 DE DE59609530T patent/DE59609530D1/en not_active Expired - Lifetime
- 1996-06-19 PT PT96109807T patent/PT766975E/en unknown
- 1996-06-19 ES ES96109807T patent/ES2177696T3/en not_active Expired - Lifetime
- 1996-06-19 DK DK96109807T patent/DK0766975T3/en active
- 1996-08-15 CA CA002183389A patent/CA2183389C/en not_active Expired - Lifetime
- 1996-09-30 US US08/724,075 patent/US5785691A/en not_active Expired - Lifetime
- 1996-10-07 JP JP8265988A patent/JP2932169B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| ATE221792T1 (en) | 2002-08-15 |
| DK0766975T3 (en) | 2002-11-25 |
| CA2183389A1 (en) | 1997-04-07 |
| EP0766975A1 (en) | 1997-04-09 |
| DE59609530D1 (en) | 2002-09-12 |
| DE19537163C1 (en) | 1997-01-30 |
| ES2177696T3 (en) | 2002-12-16 |
| JP2932169B2 (en) | 1999-08-09 |
| JPH09108350A (en) | 1997-04-28 |
| PT766975E (en) | 2002-12-31 |
| US5785691A (en) | 1998-07-28 |
| EP0766975B1 (en) | 2002-08-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2183389C (en) | Medical syringe | |
| US4775363A (en) | Arrangement in injection syringe for use once only | |
| EP0885027B1 (en) | Retractable needle and syringe combination | |
| JP2739603B2 (en) | Syringes, especially medical syringes | |
| KR100465557B1 (en) | Universal safety syringe | |
| US5342309A (en) | Syringe having safety shield | |
| EP1216719B1 (en) | Safety syringe | |
| US5019043A (en) | Syringe with needle retraction capability | |
| AU7682794A (en) | Needle retraction system | |
| EP1385564A1 (en) | Improvements relating to syringe holders | |
| CA2432880A1 (en) | Automatic mixing and injecting apparatus | |
| CA2203819C (en) | Blood extraction device having a holder and a sharpened-end cannula | |
| HU225794B1 (en) | Disposable injection device | |
| GB2220143A (en) | Single-use syringe | |
| CA2140594A1 (en) | Quick connection | |
| US6656165B2 (en) | Disposable safety syringe | |
| US4315418A (en) | Overload couplings | |
| WO2003009892A1 (en) | Non-reusable syringe with a piston stem disengagement system | |
| EP2060291B1 (en) | Safety disposable syringe | |
| EP1237600B1 (en) | Improvements in or relating to hypodermic syringes | |
| KR200219758Y1 (en) | Safety hypodermic syringe | |
| KR200219759Y1 (en) | Safety hypodermic syringe and needle holder for same | |
| WO2000041494A2 (en) | Safety syringe assembly | |
| CN219127759U (en) | Anti-drop member for syringe | |
| US6582406B2 (en) | Disposable syringe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20160815 |