Multi-beveled point needle and syringe having a multi-beveled point needle
First Claim
1. A syringe as assembly comprising:
- a syringe barrel; and
,a needle cannula supported by said syringe barrel, said needle cannula having a lumen and a central axis, an outer diameter in the range of 0.0130″
-0.0135″
, and an inner diameter in the range of 0.0075″
-0.0090″
, said needle cannula having a multi-beveled point including a plurality of planar bevels extending at different angles relative to said central axis, including a primary bevel, a pair of tip bevels and a pair of middle bevels intermediate said primary bevel and said tip bevels, said bevels contiguously bounding said lumen, wherein each of said bevels is generally flat.
2 Assignments
0 Petitions
Accused Products
Abstract
A syringe assembly including a needle cannula having a five-beveled point and a needle shield formed of a styrene block poly(ethylene/butylene) thermoplastic elastomer which significantly reduces needle penetration force and may reduce the cycle time for gas sterilization. The multi-beveled needle cannula point includes a primary bevel, a pair of tip bevels and a pair of middle bevels each intermediate the primary bevel and a respective tip bevel, wherein the angles of rotation of the primary bevel and the intermediate bevels are substantially equal resulting in reduced heights of intercepts between the bevels, therby reducing needle penetration force. The needle shield maintains the sharpness of the needle cannula during application, sterilization and removal of the shield and it is believed that the needle shield will also reduce the cycle time of gas sterilization as compared to rubber needle shields and vulcanizate thermoplastic elastomers.
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Citations
49 Claims
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1. A syringe as assembly comprising:
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a syringe barrel; and
,a needle cannula supported by said syringe barrel, said needle cannula having a lumen and a central axis, an outer diameter in the range of 0.0130″
-0.0135″
, and an inner diameter in the range of 0.0075″
-0.0090″
, said needle cannula having a multi-beveled point including a plurality of planar bevels extending at different angles relative to said central axis, including a primary bevel, a pair of tip bevels and a pair of middle bevels intermediate said primary bevel and said tip bevels, said bevels contiguously bounding said lumen, wherein each of said bevels is generally flat. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A syringe assembly comprising:
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a syringe barrel; and
,a needle cannula supported by said syringe barrel and having a multi-beveled point, said needle cannula having a central-axis, an outer diameter in the range of 0.0130″
-0.0135″
, and an inner diameter in the range of 0.0075″
-0.0090″
, said needle cannula having a lumen and a central axis therethrough, said multi-beveled point provided at one end of the cannula, said multi-beveled point comprised of a primary bevel, a pair of tip bevels, and a pair of middle bevels, said bevels contiguously bounding said lumen, wherein respective of an angle defined between said central axis and a reference plane coinciding with a respective said bevel, each of said primary bevel, said pair of middle bevels, and said pair of tip bevels are provided on said cannula at a respective planar angle, wherein said planar angles of said primary bevel and said pair of middle bevels are substantially equal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A syringe assembly comprising:
a syringe barrel; and
,a needle cannula supported by said syringe barrel and having a multi-beveled point, said needle cannula having a central axis, an outer diameter in the range of 0.0130″
-0.0135″
, and an inner diameter in the range of 0.0075″
-0.0090″
, said multi-beveled point comprised of five bevels, wherein each of said five bevels is provided on said cannula at a planar angle defined between said central axis and a reference plane, and wherein each of said five bevels is provided on said cannula at an angle of rotation about said central axis, a reference axis being disposed perpendicularly to said axis, wherein a first planar angle is defined at said bevel corresponding to a first rotational angle, said first rotational angle being measured from said reference axis, a second planar angle is defined at said bevel corresponding to a second rotational angle, said second rotational angle being measured from said reference axis, said first and second rotational angles being different with said first and second planar angle being substantially equal.- View Dependent Claims (21, 22, 23, 24, 25, 26, 27)
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28. A syringe assembly comprising:
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a syringe barrel; and
,a needle cannula supported by said syringe barrel and having a multi-beveled point, said needle cannula having a central axis, an outer diameter in the range of 0.0130″
-0.0135″
, and an inner diameter in the range of 0.0075″
-0.0090″
, said needle cannula having a lumen extending from a first end of said cannula and having an opening defined through said first end, said multi-beveled point comprised of a point with first, second, third, fourth and fifth bevels contiguously bounding said opening, said first bevel contiguously extending between said fifth and second bevels, said second bevel contiguously extending between said first and third bevels, said third bevel contiguously extending between said second and fourth bevels, said fourth bevel contiguously extending between said third and fifth bevels, and said fifth bevel contiguously extending between said fourth and first bevels, wherein said first and third bevels each have a greater length than each of said second bevel, said fourth bevel, and said fifth bevel. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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40. A syringe assembly comprising:
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a syringe barrel; and
,a needle cannula supported by said syringe barrel and having a multi-beveled point, said needle cannula having a central axis, an outer diameter in the range of 0.0130″
-0.0135″
, and an inner diameter in the range of 0.0075″
-0.0090″
, said cannula having a lumen, said lumen extending from a first end of said cannula and having an opening defined through said first end, said first end terminating in a point with a plurality of discrete bevels contiguously bounding said opening, wherein one of said plurality of discrete bevels is located furthest from said point and has a length shorter than any of said other ones of said plurality of discrete bevels. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47, 48, 49)
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Specification