Lancets
First Claim
Patent Images
1. A lancet for skin pricking, comprising:
- an elongate tubular plastic body of a first plastic material, the body having a forward end and a rearward end, and an interior surface defining a first tubular region; and
a hollow plastic insert of a second plastic material, the first plastic material being different from the second plastic material,the plastic insert being molded to form a monolithic structure comprising a second tubular region that defines a hollow cylindrical rear portion, a closed forward end, and an integral sharp tip at the closed forward end,the plastic insert located within the body and with the integral sharp tip projecting through said forward end of the body,the body being molded over the insert such that;
the forward end of the body is closed by an end wall, with the sharp tip of said insert projecting from a forward surface of the end wall, and a rear surface of the end wall abuts the closed forward end of the insert, blocking forward movement of the insert relative to the body; and
the body forms an interior shoulder within the first tubular region which abuts the cylindrical rear portion of the insert, blocking rearward movement of the insert relative to the body, thereby affixing the insert within the body,wherein, the plastic insert is immovable relative to the body,the second plastic material forming the plastic insert is a liquid crystal polymer, andthe first tubular region and the second tubular region together define a tubular passage closed at said forward end.
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Accused Products
Abstract
A lancet has a generally tubular body (1). A hollow insert (4) with a closed end plugs one end of the body (1), and it has a co-axial projection (5) forming a sharp tip proud of that end of the body. The body (1) and insert (4) are simultaneously formed by twin shot moulding, the body being of polyethylene and the insert being of a liquid crystal polymer which will create a sharp tip of adequate strength.
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Citations
16 Claims
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1. A lancet for skin pricking, comprising:
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an elongate tubular plastic body of a first plastic material, the body having a forward end and a rearward end, and an interior surface defining a first tubular region; and a hollow plastic insert of a second plastic material, the first plastic material being different from the second plastic material, the plastic insert being molded to form a monolithic structure comprising a second tubular region that defines a hollow cylindrical rear portion, a closed forward end, and an integral sharp tip at the closed forward end, the plastic insert located within the body and with the integral sharp tip projecting through said forward end of the body, the body being molded over the insert such that; the forward end of the body is closed by an end wall, with the sharp tip of said insert projecting from a forward surface of the end wall, and a rear surface of the end wall abuts the closed forward end of the insert, blocking forward movement of the insert relative to the body; and the body forms an interior shoulder within the first tubular region which abuts the cylindrical rear portion of the insert, blocking rearward movement of the insert relative to the body, thereby affixing the insert within the body, wherein, the plastic insert is immovable relative to the body, the second plastic material forming the plastic insert is a liquid crystal polymer, and the first tubular region and the second tubular region together define a tubular passage closed at said forward end. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A lancet for skin pricking, comprising:
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an elongate tubular plastic body, the body having a forward end and a rearward end, and an interior surface defining a first tubular region; and a hollow liquid crystal polymer insert, the polymer insert being a monolithic structure comprising a second tubular region and a closed forward end providing an integral sharp tip, the insert being located within the body, with an outer surface of the insert contacting an inner surface of the forward end of the body, blocking forward movement of the insert relative to the body, and with the integral sharp tip projecting through said forward end of the body, and an outer surface of a rearward end of the insert contacting an interior shoulder of the body, blocking rearward movement of the insert relative to the body, wherein the first tubular region and the second tubular region together define a tubular passage closed at said forward end, and the insert is immovable relative to the body. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A lancet for skin pricking, comprising:
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an elongate tubular plastic body, the body having a closed forward end and an open rearward end, and an interior first tubular region; and a plastic insert, the insert being a monolithic structure comprising a second tubular region and a closed forward end providing an integral sharp tip, the insert being located within the body with an outer surface of the insert contacting an inner surface of the body, blocking forward movement of the insert relative to the body, and an outer surface of the insert contacting an interior shoulder of the body, blocking rearward movement of the insert relative to the body, the insert thus being immovable relative to the body, with the integral sharp tip projecting through said forward end of the body, and with the first tubular region and the second tubular region together defining a tubular passage closed at said forward end and open at said rearward end.
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16. A lancet for skin pricking, comprising:
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an elongate tubular plastic body of a first plastic material, the body having a forward end and a rearward end, and an interior surface defining a first tubular region; and a plastic insert consisting of a second plastic material comprising liquid crystal polymer, the second plastic material being different from the first plastic material, the insert being a monolithic structure comprising;
a second tubular region, a closed forward end, and an integral sharp tip,the first tubular region of the body and the second tubular region of the insert together defining a tubular passage closed at the forward end, the lancet being formed by a molding process comprising first molding the insert as a monolithic structure and then molding the body over the insert, the molding process being such that the forward end of the body is closed by an end wall, the sharp tip projecting through a forward surface of the end wall and a rear surface of the end wall abutting the closed forward end of the insert, blocking forward movement of the insert relative to the body, and being such that the body forms an interior shoulder within the first tubular region and abutting the cylindrical rear portion of the insert, blocking rearward movement of the insert relative to the body, thereby permanently affixing the insert relative to the body.
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Specification