CA2312169C - Syringe for medical purposes - Google Patents
Syringe for medical purposes Download PDFInfo
- Publication number
- CA2312169C CA2312169C CA002312169A CA2312169A CA2312169C CA 2312169 C CA2312169 C CA 2312169C CA 002312169 A CA002312169 A CA 002312169A CA 2312169 A CA2312169 A CA 2312169A CA 2312169 C CA2312169 C CA 2312169C
- Authority
- CA
- Canada
- Prior art keywords
- syringe
- finger
- syringe barrel
- sleeve
- shaped extension
- 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
- A61M5/3129—Syringe barrels
- A61M5/3135—Syringe barrels characterised by constructional features of the proximal end
-
- 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
- A61M5/3137—Specially designed finger grip means, e.g. for easy manipulation of the syringe rod
- A61M2005/3139—Finger grips not integrally formed with the syringe barrel, e.g. using adapter with finger grips
-
- 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
Abstract
The syringe for medical purposes consists of a syringe barrel (1) and at least one syringe plunger arranged so that it can slide therein, while the syringe barrel (1) is or can be provided with a cannula at one of its ends. At its other end the syringe barrel (1) has a finger rest (2) which can abut against a lip (3) of the syringe barrel (1) projecting radially outwards. The finger rest (2) takes the form of a finger plate (4) which has a sleeve-shaped extension (5) projecting into the interior of the syringe barrel (1) and also a collar (6) attached to the edge of the finger plate (4) and likewise projecting towards the end carrying the cannula.
The collar (6) is cut away from the finger plate (4) on two opposite sides of the finger rest (2) forming in this way on each side a retaining clip (7), and on each retaining clip (7) a stop (8) is located, projecting radially inwards and snapping over the lip (3) of the syringe barrel (1) when the finger rest (2) is in position.
The collar (6) is cut away from the finger plate (4) on two opposite sides of the finger rest (2) forming in this way on each side a retaining clip (7), and on each retaining clip (7) a stop (8) is located, projecting radially inwards and snapping over the lip (3) of the syringe barrel (1) when the finger rest (2) is in position.
Description
Syringe for medical purposes Background o'f 'the Invention The invention refers to a syringe for medical purposes with a syringe barrel and at least one syringe plunger arranged so that it can slide therein while the syringe barrel is or can be provided at one of its ends with a cannula and at its other end with a finger rest which can abut against a lip of the syringe barrel projecting radially outwards.
Syringes of this type are known in the art, in a variety of embodiments and have, for example; been previously described in DE 41 27 650.
ummarv of the Invention An object of the invention is to design a syringe of the type referred to above in such a manner that the finger rest can be installed as simply as possible and at the same time serve as a brake for the stopper, which will also make it possible, when the plunger stem is withdrawn, to arrest the stopper at a place prescribed for the specific type of syringe and appropriate to the application.
In accordance with one aspect of the present invention there is provided a syringe for medical purposes with a syringe barrel and at least one plunger arranged to slide within it and where the syringe barrel is adapted to be connected to a cannula at one of its ends and at its other end with a finger rest which can abut against a lip of the syringe barrel projecting radially outwards, wherein the finger rest consists of an essentially rectangular cross-section finger plate which has a sleeve-shaped extension projecting into the interior of the syringe barrel and at the same time forms a centering element and a collar attached to the edge of the finger plate and likewise projecting towards the end carrying the cannula, the collar being cut away from the finger plate on two opposite sides of the finger rest and in this way forming two U-shaped retaining clips, wherein each retaining clip has a back having a straight profile and each retaining clip has short side pieces shorter than the back; each retaining clip having located on it a stop projecting radially inwards and snapping over the lip of the syringe barrel when the finger rest is placed in position.
In accordance with another aspect of the present invention there is provided a finger rest for use with a medical syringe, the syringe comprising a syringe barrel, a plunger sliding within the syringe barrel, the'barrel being adapted for receiving a cannula at a first end, and having at a second end a lip projecting radially outward, the finger rest comprising: an essentially rectangular cross-section finger plate, allowing passage of the plunger; a sleeve-shaped extension, attached to one side of the finger plate, through which the plunger passes; a collar attached to the periphery of the finger plate, extending in the same direction as the sleeve-shaped extension, the collar being separated from the finger plate at two portions at opposite sides of the finger plate, thereby forming two U-shaped retaining clips, wherein each retaining clip has a back having a straight profile and each retaining clip has short side pieces shorter than the back; two resilient stops, each attached to a retaining clip, 2a and projecting radially inward; wherein the sleeve-shaped extension may be slid into the syringe barrel.at the second , end, until the finger plate abuts the lip of the syringe barrel, and the stops snap over the lip, thereby holding the finger rest on the second end of the syringe barrel.
Detailed Description of the Invention The finger rest is formed from a finger plate, which has a sleeve-shaped extension projecting into the interior of the syringe barrel as well as a collar projecting towards the end carrying the cannula, with the collar cut away from the finger plate on two of the opposed sides of the finger rest, forming in this way on each side a retaining clip, and on each clip a stop is located, projecting radially inwards and snapping over the lip of the syringe barrel when the finger rest has been installed.
The advantage obtained by the invention is essentially that a finger rest with a sleeve-shaped extension of appropriate length can, as desired and depending on the use to be made of the syringe, be selected and used. Thus before injection the length of travel during withdrawal of the plunger stem - for example, when blood is being drawn - is appropriately limited by the stopper striking the sleeve-shaped extension.
The invention also makes it possible to manufacture a pre-filled syringe rapidly on a continuous production line without interrupting the work sequence and therefore without having to hold preassembled, semi-finished products in temporary storage. In addition, the assembly requires only a small number of moving parts, so that there is an additional cost-saving due to reduced wear. The central positioning of the finger rest on the syringe barrel clearly makes assembly simpler than in systems in which the finger rest must be pushed laterally over the lip of the glass syringe barrel, that is to say, along the radius.
In an embodiment which has been found advantageous the finger rest has an essentially rectangular cross-section and the retaining clips are U-shaped.
Syringes of this type are known in the art, in a variety of embodiments and have, for example; been previously described in DE 41 27 650.
ummarv of the Invention An object of the invention is to design a syringe of the type referred to above in such a manner that the finger rest can be installed as simply as possible and at the same time serve as a brake for the stopper, which will also make it possible, when the plunger stem is withdrawn, to arrest the stopper at a place prescribed for the specific type of syringe and appropriate to the application.
In accordance with one aspect of the present invention there is provided a syringe for medical purposes with a syringe barrel and at least one plunger arranged to slide within it and where the syringe barrel is adapted to be connected to a cannula at one of its ends and at its other end with a finger rest which can abut against a lip of the syringe barrel projecting radially outwards, wherein the finger rest consists of an essentially rectangular cross-section finger plate which has a sleeve-shaped extension projecting into the interior of the syringe barrel and at the same time forms a centering element and a collar attached to the edge of the finger plate and likewise projecting towards the end carrying the cannula, the collar being cut away from the finger plate on two opposite sides of the finger rest and in this way forming two U-shaped retaining clips, wherein each retaining clip has a back having a straight profile and each retaining clip has short side pieces shorter than the back; each retaining clip having located on it a stop projecting radially inwards and snapping over the lip of the syringe barrel when the finger rest is placed in position.
In accordance with another aspect of the present invention there is provided a finger rest for use with a medical syringe, the syringe comprising a syringe barrel, a plunger sliding within the syringe barrel, the'barrel being adapted for receiving a cannula at a first end, and having at a second end a lip projecting radially outward, the finger rest comprising: an essentially rectangular cross-section finger plate, allowing passage of the plunger; a sleeve-shaped extension, attached to one side of the finger plate, through which the plunger passes; a collar attached to the periphery of the finger plate, extending in the same direction as the sleeve-shaped extension, the collar being separated from the finger plate at two portions at opposite sides of the finger plate, thereby forming two U-shaped retaining clips, wherein each retaining clip has a back having a straight profile and each retaining clip has short side pieces shorter than the back; two resilient stops, each attached to a retaining clip, 2a and projecting radially inward; wherein the sleeve-shaped extension may be slid into the syringe barrel.at the second , end, until the finger plate abuts the lip of the syringe barrel, and the stops snap over the lip, thereby holding the finger rest on the second end of the syringe barrel.
Detailed Description of the Invention The finger rest is formed from a finger plate, which has a sleeve-shaped extension projecting into the interior of the syringe barrel as well as a collar projecting towards the end carrying the cannula, with the collar cut away from the finger plate on two of the opposed sides of the finger rest, forming in this way on each side a retaining clip, and on each clip a stop is located, projecting radially inwards and snapping over the lip of the syringe barrel when the finger rest has been installed.
The advantage obtained by the invention is essentially that a finger rest with a sleeve-shaped extension of appropriate length can, as desired and depending on the use to be made of the syringe, be selected and used. Thus before injection the length of travel during withdrawal of the plunger stem - for example, when blood is being drawn - is appropriately limited by the stopper striking the sleeve-shaped extension.
The invention also makes it possible to manufacture a pre-filled syringe rapidly on a continuous production line without interrupting the work sequence and therefore without having to hold preassembled, semi-finished products in temporary storage. In addition, the assembly requires only a small number of moving parts, so that there is an additional cost-saving due to reduced wear. The central positioning of the finger rest on the syringe barrel clearly makes assembly simpler than in systems in which the finger rest must be pushed laterally over the lip of the glass syringe barrel, that is to say, along the radius.
In an embodiment which has been found advantageous the finger rest has an essentially rectangular cross-section and the retaining clips are U-shaped.
It is also advantageous for the retaining clip to have a back with a straight profile and for each of the side pieces of the clip to be quite short. Moreover, the area of transition from the back to the side piece may advantageously be rounded.
It has further been found advantageous for the outside diameter of the sleeve-shaped extension to match approximately the inside diameter of the syringe barrel, being either equal to it or only slightly smaller.
For the purpose of centering during assembly it is desirable that the height of the sleeve-shaped extension measured vertically to the finger plate exceed the height of the collar.
In addition, in order to prevent rotation of the finger rest when mounted on the syringe barrel the invention provides that the lip of the syringe barrel viewed in plan is essentially oval in shape with the stop snapping over the rounded portion of the lip.
It is also beneficial to give the edge of the bore of the sleeve-shaped extension which opens into the finger plate a conical entry slope on the side facing away from the cannula.
Lastly, it is especially advantageous for the manufacturing process if the finger plate, the collar, the retaining clips and the sleeve-shaped extension are designed as a single piece and are made of relatively rigid material. This will ensure that the syringe can be easily handled and will make the retaining clips sufficiently rigid to prevent the finger rest from detaching itself from the syringe barrel.
The invention is explained below in detail on the basis of an embodiment shown in the drawings, as follows:
Fig. 1 a partial view of the syringe with the finger rest installed in position;
Fig. 2 the object of the invention according to Fig. 1, but in a reverse view;
Fig. 3 the object of the invention according to Fig. 1, without the syringe barrel;
Fig .4 the object of the invention according to Fig. 2, without the syringe barrel;
Fig. 5 a possible procedure for assembling the syringe in which finger rests are fed in obliquely.
The syringe for medical purposes illustrated in the drawings consists of a partially illustrated syringe barrel 1 on which a cannula is or can be fitted at the end not shown in the illustration. Other parts not shown are the plunger normally located to slide in the syringe barrel 1 and the plunger stem required to shift the plunger.
The syringe barrel 1 has attached to it a finger rest 2 resting against a lip 3 of the syringe barrel 1 which projects radially outwards.
More particularly, the finger rest 2 consists of a finger plate 4 which has a sleeve-shaped extension 5 projecting into the interior of the syringe barrel 1. This can be seen with particular clarity in Fig. 4. In addition, there is attached to the edge of the finger plate 4 a collar 6 which likewise projects towards the end carrying the cannula and is cut away from the finger plate 4 on two opposite sides of the finger rest 2. In this way two retaining clips 7 are formed, on each of which retaining clips 7 a stop 8 is located facing radially inwards. As can be seen especially from Fig. 2 this stop 8 snaps over lip 3 of the syringe barrel 1.
The finger plate 4 in the figures has a rectangular cross-section while the retaining clips 7 are approximately U-shaped. In addition, the back 7.1 of each retaining clip 7 has a straight profile and each of the side pieces 7.2 is shorter. The area of transition from the back 7.1 to the side piece 7.2 may be rounded, making the syringe more comfortable to handle.
The outside diameter of the sleeve-shaped extension 5 approximately matches the inside diameter of the syringe barrel 1, so that it fits into the latter with no more than minimum clearance. The height of the sleeve-shaped extension measured vertically to the finger plate 4 is at least slightly greater than the height of the collar 6, so that the sleeve-shaped extension 5 serves as a centering guide when the finger rest 2 is being located on the syringe barrel 1. The actual height of the sleeve-shaped extension 5 is however determined by its second function which is to serve as a brake for the stopper; the height of the extension 5 determines the place beyond which the stopper cannot be displaced in reverse direction.
As can be seen more particularly from Fig. 2 the lip 3 of the syringe barrel 1 viewed in plan has an essentially oval shape, with the stop 8 snapping over the rounded portion of the lip 3. This oval shape is most easily obtained by cutting away the lip 3 on two opposite sides.
As can be seen from Fig. 1 the edge of the bore 9 of the sleeve-shaped extension 5 which opens into the finger plate 4 is given the slope 10 of a cone on the side facing away from the cannula.
Lastly, the finger plate 4, the collar 6, the retaining clip 7 and the sleeve-shaped extension 5 are formed from a single piece and are made of relatively rigid material, which ensures safe handling of the syringe when in use and also prevents the finger rest 2 from detaching itself from the syringe barrel 1.
The first step in the production of the syringe is to fill the syringe barrel 1 from the side where the finger rest 2 is to be attached, after which the syringe barrel 1 is closed by placing the plunger in position. The pre-filled syringe is then completed by assembling the finger rest 2. For this two distinct procedures are available:
For assembly in an axial direction the finger rest 2 is first of all placed on the lip 3 of the glass barrel in such a manner that the sleeve-shaped extension 5 of the syringe barrel 1 is centred upon insertion. At a specific, axially-applied pressure, the finger rest 2 is then pushed over the lip 3 against the clamping resistance of the compliant stops 8 through the retaining clip 7 to the point where the stops 8 snap over the lip 3.
There is however also the possibility shown in Fig. 5 of bringing up the finger rest 2 obliquely (for example, at an angle of approximately 45 degrees to the cylinder barrel) so that first of all one of the two stops 8 snaps over the lip 3, as Fig. 5b. In this way the finger rest 2 is already arrested by this one stop 8 on the cylinder barrel 1. When the syringe barrel 1 is moved again and takes the finger rest 2 along with it the barrel passes by a hold-down pad 11 which may, for example, be circular or sickle-shaped. This is shown diagrammatically in Fig. 5c. This hold-down pad 11 subjects the finger rest 2 to full pressure and causes the second stop 8 to snap into position, as is shown in Fig. 5d.
It has further been found advantageous for the outside diameter of the sleeve-shaped extension to match approximately the inside diameter of the syringe barrel, being either equal to it or only slightly smaller.
For the purpose of centering during assembly it is desirable that the height of the sleeve-shaped extension measured vertically to the finger plate exceed the height of the collar.
In addition, in order to prevent rotation of the finger rest when mounted on the syringe barrel the invention provides that the lip of the syringe barrel viewed in plan is essentially oval in shape with the stop snapping over the rounded portion of the lip.
It is also beneficial to give the edge of the bore of the sleeve-shaped extension which opens into the finger plate a conical entry slope on the side facing away from the cannula.
Lastly, it is especially advantageous for the manufacturing process if the finger plate, the collar, the retaining clips and the sleeve-shaped extension are designed as a single piece and are made of relatively rigid material. This will ensure that the syringe can be easily handled and will make the retaining clips sufficiently rigid to prevent the finger rest from detaching itself from the syringe barrel.
The invention is explained below in detail on the basis of an embodiment shown in the drawings, as follows:
Fig. 1 a partial view of the syringe with the finger rest installed in position;
Fig. 2 the object of the invention according to Fig. 1, but in a reverse view;
Fig. 3 the object of the invention according to Fig. 1, without the syringe barrel;
Fig .4 the object of the invention according to Fig. 2, without the syringe barrel;
Fig. 5 a possible procedure for assembling the syringe in which finger rests are fed in obliquely.
The syringe for medical purposes illustrated in the drawings consists of a partially illustrated syringe barrel 1 on which a cannula is or can be fitted at the end not shown in the illustration. Other parts not shown are the plunger normally located to slide in the syringe barrel 1 and the plunger stem required to shift the plunger.
The syringe barrel 1 has attached to it a finger rest 2 resting against a lip 3 of the syringe barrel 1 which projects radially outwards.
More particularly, the finger rest 2 consists of a finger plate 4 which has a sleeve-shaped extension 5 projecting into the interior of the syringe barrel 1. This can be seen with particular clarity in Fig. 4. In addition, there is attached to the edge of the finger plate 4 a collar 6 which likewise projects towards the end carrying the cannula and is cut away from the finger plate 4 on two opposite sides of the finger rest 2. In this way two retaining clips 7 are formed, on each of which retaining clips 7 a stop 8 is located facing radially inwards. As can be seen especially from Fig. 2 this stop 8 snaps over lip 3 of the syringe barrel 1.
The finger plate 4 in the figures has a rectangular cross-section while the retaining clips 7 are approximately U-shaped. In addition, the back 7.1 of each retaining clip 7 has a straight profile and each of the side pieces 7.2 is shorter. The area of transition from the back 7.1 to the side piece 7.2 may be rounded, making the syringe more comfortable to handle.
The outside diameter of the sleeve-shaped extension 5 approximately matches the inside diameter of the syringe barrel 1, so that it fits into the latter with no more than minimum clearance. The height of the sleeve-shaped extension measured vertically to the finger plate 4 is at least slightly greater than the height of the collar 6, so that the sleeve-shaped extension 5 serves as a centering guide when the finger rest 2 is being located on the syringe barrel 1. The actual height of the sleeve-shaped extension 5 is however determined by its second function which is to serve as a brake for the stopper; the height of the extension 5 determines the place beyond which the stopper cannot be displaced in reverse direction.
As can be seen more particularly from Fig. 2 the lip 3 of the syringe barrel 1 viewed in plan has an essentially oval shape, with the stop 8 snapping over the rounded portion of the lip 3. This oval shape is most easily obtained by cutting away the lip 3 on two opposite sides.
As can be seen from Fig. 1 the edge of the bore 9 of the sleeve-shaped extension 5 which opens into the finger plate 4 is given the slope 10 of a cone on the side facing away from the cannula.
Lastly, the finger plate 4, the collar 6, the retaining clip 7 and the sleeve-shaped extension 5 are formed from a single piece and are made of relatively rigid material, which ensures safe handling of the syringe when in use and also prevents the finger rest 2 from detaching itself from the syringe barrel 1.
The first step in the production of the syringe is to fill the syringe barrel 1 from the side where the finger rest 2 is to be attached, after which the syringe barrel 1 is closed by placing the plunger in position. The pre-filled syringe is then completed by assembling the finger rest 2. For this two distinct procedures are available:
For assembly in an axial direction the finger rest 2 is first of all placed on the lip 3 of the glass barrel in such a manner that the sleeve-shaped extension 5 of the syringe barrel 1 is centred upon insertion. At a specific, axially-applied pressure, the finger rest 2 is then pushed over the lip 3 against the clamping resistance of the compliant stops 8 through the retaining clip 7 to the point where the stops 8 snap over the lip 3.
There is however also the possibility shown in Fig. 5 of bringing up the finger rest 2 obliquely (for example, at an angle of approximately 45 degrees to the cylinder barrel) so that first of all one of the two stops 8 snaps over the lip 3, as Fig. 5b. In this way the finger rest 2 is already arrested by this one stop 8 on the cylinder barrel 1. When the syringe barrel 1 is moved again and takes the finger rest 2 along with it the barrel passes by a hold-down pad 11 which may, for example, be circular or sickle-shaped. This is shown diagrammatically in Fig. 5c. This hold-down pad 11 subjects the finger rest 2 to full pressure and causes the second stop 8 to snap into position, as is shown in Fig. 5d.
Claims (16)
1. A syringe for medical purposes with a syringe barrel and at least one plunger arranged to slide within it and where the syringe barrel is adapted to be connected to a cannula at one of its ends and at its other end with a finger rest which can abut against a lip of the syringe barrel projecting radially outwards, wherein the finger rest consists of an essentially rectangular cross-section finger plate which has a sleeve-shaped extension projecting into the interior of the syringe barrel and at the same time forms a centering element and a collar attached to the edge of the finger plate and likewise projecting towards the end carrying the cannula, the collar being cut away from the finger plate on two opposite sides of the finger rest and in this way forming two U-shaped retaining clips, wherein each retaining clip has a back having a straight profile and each retaining clip has short side pieces shorter than the back, each retaining clip having located on it a stop projecting radially inwards and snapping over the lip of the syringe barrel when the finger rest is placed in position.
2. A syringe according to Claim 1, wherein a transition area from the back of the retaining clip to the side piece is rounded.
3. A syringe according to Claim 1 or 2, wherein the outside diameter of the sleeve-shaped extension substantially matches the inside diameter of the syringe barrel.
4. A syringe according to any one of Claims 1 through 3, wherein the height of the sleeve-shaped extension measured vertically to the finger plate exceeds the height of the collar.
5. A syringe according to any one of Claims 1 through 4, wherein the lip of the syringe barrel viewed in plan is essentially oval in shape.
6. A syringe according to any one of Claims 1 through 5, wherein the edge of the bore of the sleeve-shaped extension which opens into the finger plate has the slope of a cone on the side facing away from the cannula.
7. A syringe according to any one of Claims 1 through 6, wherein the finger plate, the collar, the retaining clip and the sleeve-shaped extension are formed as a single piece and are made of substantially rigid material.
8. A syringe according to any one of Claims 1 through 7, wherein the sleeve-shaped extension allows the plunger to be retracted only a predetermined distance.
9. A finger rest for use with a medical syringe, the syringe comprising a syringe barrel, a plunger sliding within the syringe barrel, the barrel being adapted for receiving a cannula at a first end, and having at a second end a lip projecting radially outward, the finger rest comprising:
an essentially rectangular cross-section finger plate, allowing passage of the plunger;
a sleeve-shaped extension, attached to one side of the finger plate, through which the plunger passes;
a collar attached to the periphery of the finger plate, extending in the same direction as the sleeve-shaped extension, the collar being separated from the finger plate at two portions at opposite sides of the finger plate, thereby forming two U-shaped retaining clips wherein each retaining clip has a back having a straight profile and each retaining clip has short side pieces shorter than the back;
two resilient stops, each attached to a retaining clip, and projecting radially inward;
wherein the sleeve-shaped extension may be slid into the syringe barrel at the second end, until the finger plate abuts the lip of the syringe barrel, and the stops snap over the lip, thereby holding the finger rest on the second end of the syringe barrel.
an essentially rectangular cross-section finger plate, allowing passage of the plunger;
a sleeve-shaped extension, attached to one side of the finger plate, through which the plunger passes;
a collar attached to the periphery of the finger plate, extending in the same direction as the sleeve-shaped extension, the collar being separated from the finger plate at two portions at opposite sides of the finger plate, thereby forming two U-shaped retaining clips wherein each retaining clip has a back having a straight profile and each retaining clip has short side pieces shorter than the back;
two resilient stops, each attached to a retaining clip, and projecting radially inward;
wherein the sleeve-shaped extension may be slid into the syringe barrel at the second end, until the finger plate abuts the lip of the syringe barrel, and the stops snap over the lip, thereby holding the finger rest on the second end of the syringe barrel.
10. A finger rest according to Claim 9, wherein a transition area from the back of the retaining clip to the side piece is rounded.
11. A finger rest according to Claim 9 or 10, wherein the outside diameter of the sleeve-shaped extension substantially matches the inside diameter of the syringe barrel.
12. A finger rest according to any one of Claims 9 through 11, wherein the height of the sleeve-shaped extension measured vertically to the finger plate exceeds the height of the collar.
13. A finger rest according to any one of Claims 9 through 12, wherein the lip of the syringe barrel viewed in plan is essentially oval in shape, with the stop snapping over the rounded portion of the lip.
14. A finger rest according to any one of Claims 9 through 13, wherein the edge of the bore of the sleeve-shaped extension which opens into the finger plate has the slope of a cone on the side facing away from the cannula.
15. A finger rest according to any one of Claims 9 through 14, wherein the finger plate, the collar, the retaining clip and the sleeve-shaped extension are formed as a single piece and are made of substantially rigid material.
16. A finger rest according to any one of Claims 9 through 15, wherein the sleeve-shaped extension allows the plunger to be retracted only a predetermined distance.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19929325.2-41 | 1999-06-26 | ||
| DE19929325A DE19929325A1 (en) | 1999-06-26 | 1999-06-26 | Syringe for medical purposes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2312169A1 CA2312169A1 (en) | 2000-12-26 |
| CA2312169C true CA2312169C (en) | 2005-09-13 |
Family
ID=7912647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002312169A Expired - Lifetime CA2312169C (en) | 1999-06-26 | 2000-06-23 | Syringe for medical purposes |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US6296625B1 (en) |
| EP (1) | EP1062961B1 (en) |
| JP (1) | JP3430291B2 (en) |
| AT (1) | ATE300327T1 (en) |
| CA (1) | CA2312169C (en) |
| DE (2) | DE19929325A1 (en) |
| DK (1) | DK1062961T3 (en) |
| ES (1) | ES2243158T3 (en) |
| PT (1) | PT1062961E (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10537683B2 (en) | 2016-11-03 | 2020-01-21 | Johnson & Johnson Surgical Vision, Inc. | Syringe finger grip |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4593714B2 (en) * | 2000-02-10 | 2010-12-08 | 株式会社根本杏林堂 | Syringe outer cylinder, syringe holder, syringe piston and piston holder |
| FR2821560B1 (en) * | 2001-03-05 | 2003-05-23 | Becton Dickinson France | SYRINGE, OR SIMILAR DEVICE |
| DE10220034A1 (en) * | 2002-05-04 | 2003-11-20 | Schott Glas | Syringe, especially a prefilled disposable syringe |
| DE10252220B3 (en) * | 2002-11-11 | 2004-05-13 | Schott Glas | Medical syringe |
| ES2344896T3 (en) * | 2003-01-22 | 2010-09-09 | Duoject Medical Systems Inc | PHARMACEUTICAL PRODUCT SUPPLY SYSTEMS. |
| FR2852851B1 (en) * | 2003-03-25 | 2006-01-06 | Sedat | NEEDLE PROTECTION DEVICE FOR SYRINGE, AND INJECTION DEVICE COMPRISING SYRINGE AND PROTECTIVE DEVICE |
| DE10326706A1 (en) | 2003-06-04 | 2005-01-05 | Schott Ag | Syringe, in particular for medical applications, and method for producing such |
| US20050070854A1 (en) * | 2003-09-25 | 2005-03-31 | Wright Alastair Douglas | Syringe |
| FR2861310B1 (en) * | 2003-10-22 | 2006-09-22 | Plastef Investissements | SECURE INJECTION SYRINGE DEVICE |
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| CH591866A5 (en) * | 1975-11-05 | 1977-09-30 | Lezard Sa | |
| DE4127650C1 (en) | 1991-08-21 | 1993-02-25 | Arzneimittel Gmbh Apotheker Vetter & Co Ravensburg, 7980 Ravensburg, De | |
| US5338309A (en) * | 1992-07-21 | 1994-08-16 | Becton, Dickinson And Company | Syringe having two component barrel |
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-
1999
- 1999-06-26 DE DE19929325A patent/DE19929325A1/en not_active Withdrawn
-
2000
- 2000-03-01 ES ES00104199T patent/ES2243158T3/en not_active Expired - Lifetime
- 2000-03-01 EP EP00104199A patent/EP1062961B1/en not_active Expired - Lifetime
- 2000-03-01 AT AT00104199T patent/ATE300327T1/en active
- 2000-03-01 PT PT00104199T patent/PT1062961E/en unknown
- 2000-03-01 DE DE50010807T patent/DE50010807D1/en not_active Expired - Lifetime
- 2000-03-01 DK DK00104199T patent/DK1062961T3/en active
- 2000-06-16 JP JP2000181412A patent/JP3430291B2/en not_active Expired - Lifetime
- 2000-06-23 CA CA002312169A patent/CA2312169C/en not_active Expired - Lifetime
- 2000-06-26 US US09/602,708 patent/US6296625B1/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10537683B2 (en) | 2016-11-03 | 2020-01-21 | Johnson & Johnson Surgical Vision, Inc. | Syringe finger grip |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001029468A (en) | 2001-02-06 |
| ES2243158T3 (en) | 2005-12-01 |
| JP3430291B2 (en) | 2003-07-28 |
| EP1062961B1 (en) | 2005-07-27 |
| EP1062961A1 (en) | 2000-12-27 |
| DE19929325A1 (en) | 2001-01-18 |
| ATE300327T1 (en) | 2005-08-15 |
| PT1062961E (en) | 2005-09-30 |
| DE50010807D1 (en) | 2005-09-01 |
| DK1062961T3 (en) | 2005-10-10 |
| US6296625B1 (en) | 2001-10-02 |
| CA2312169A1 (en) | 2000-12-26 |
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| Date | Code | Title | Description |
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| EEER | Examination request |