Glass syringe barrel with increased cone breaking force
A technology of syringe barrel and glass, applied in the field of syringes
Pending Publication Date: 2021-02-23
肖特制药股份有限两合公司 +1
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
Such glass syringe barrels are therefore very susceptible to mechanical stress in the tapered area
Method used
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Embodiment Construction
[0157] figure 1 Shown is a cross-sectional view of a syringe comprising a glass syringe barrel 100 according to the invention, into which a plunger stop 104 has been introduced, the glass syringe barrel 100 having a length l in a body region 114 3 and outer diameter d 2 . Such as figure 1 As shown, syringe barrel 100 includes a top end 102 having a conical upper portion 102 and a bottom end 103 into which a plunger stop 104 has been introduced.
[0158] figure 2 show figure 1 Shown is an enlarged cross-sectional view of the top end 102 of the glass syringe barrel 100, which includes a conical upper portion 101 ( figure 2 The cross-section of the glass syringe barrel 100 shown corresponds to figure 1 The area enclosed by the dashed circle shown). From figure 2 As can be seen in , the conical upper portion 101 of the glass syringe barrel 100 is in the form of a Luer slip-on fitting and is in the figure 2 The illustrated embodiment includes a tapered region 105 h...
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The glass syringe barrel has an at least partially conical upper portion and has a longitudinal axis. The glass syringe barrel includes a top end through which liquid can be jetted and a bottom end into which the plunger stopper can be pushed. Also included is (1) a tapered region having a first end and a second end, the first end corresponding to the top end of the glass syringe barrel, the tapered region having a length and an outer diameter at the second end; (2) a shoulder region having a first end and a second end, the first end being adjacent to the second end of the tapered region, theouter contour of the shoulder region comprising a concave and substantially arcuate region starting below the second end of the tapered region, the outer radius of which is r1, and a convex and substantially arcuate region starting above the second end of the shoulder region, the outer radius of which is r2; (3) a body region having a first end and a second end, the first end being adjacent to thesecond end of the shoulder region, the second end corresponding to the bottom end of the glass syringe barrel, the body region having an outer diameter and a glass thickness; the outer contour of theglass syringe barrel in the shoulder region is defined by a certain minimum of radius of curvature.
Description
technical field [0001] The invention relates to a glass syringe barrel having an at least partially conical upper part and having a longitudinal axis L barrel . The glass syringe barrel can include a top end through which liquid is ejected and a bottom end into which a plunger stop can be pushed. The glass syringe barrel comprises, in order from top to bottom: 1) a tapered region, 2) a shoulder region, and 3) a body region. The invention also relates to a plurality of glass syringe barrels and syringes comprising glass syringe barrels. Background technique [0002] To ensure reliable use of pharmaceutical products, prefilled disposable syringes are commercially available. With relatively simple handling or handling, the products contained therein can be quickly injected through these syringes. This prefilled syringe has a syringe barrel made of glass or polymer with a syringe tip formed on it. The syringe needle is integrated in the syringe barrel, or the syringe barrel...
Claims
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IPC IPC(8): A61M5/31
CPCA61M5/3134A61M5/28A61M2205/0211A61M2205/19A61M5/347A61M5/348A61M5/3129A61M5/31511A61J1/065A61M2005/3104A61M5/315
Inventor R·奥伯汉斯利I·安德烈奥利M·史特拉瑟曼A·兰格斯多弗P·托马斯
Owner 肖特制药股份有限两合公司