Flash plug for I.V. catheters
First Claim
Patent Images
1. A flash plug for an I.V. catheter comprising:
- a flash plug body formed of a polymeric material, and including a relatively narrow outside diameter distal end for engaging a catheter flash chamber and a relatively larger outside diameter proximal end for extending from said flash chamber, said narrow and larger outside diameter portions being separated by a shoulder for engaging the proximal end of said flash chamber, said flash plug body including an aperture extending through said distal end proximal portions of said body, said aperture exhibiting a relatively smaller interior diameter within said distal end than the interior diameter of said aperture within said proximal end; and
an insert formed of a porous material and located within said aperture intermediate the terminal ends of said aperture to retain blood within said flash chamber and within said aperture distal said insert, said insert being sized so as to be insertable through said proximal end of said aperture and incapable of passage through said relatively smaller diameter distal portion of said aperture.
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Abstract
A flash plug for an I.V. catheter is formed of a body of polymeric material, and has a narrow distal end for insertion within a catheter flash chamber and a larger proximal end which extends from the flash chamber. The flash plug has an aperture extending through it from the distal to the proximal end. An insert of a porous material is located within the aperture, and is capable of passing air and blocking the flow of blood. The catheter body is compatible with flash chamber material so as to remain securely located within the flash chamber and provides protection for the insert. The aperture diameter is sized to retain the porous insert securely within the flash plug body.
135 Citations
11 Claims
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1. A flash plug for an I.V. catheter comprising:
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a flash plug body formed of a polymeric material, and including a relatively narrow outside diameter distal end for engaging a catheter flash chamber and a relatively larger outside diameter proximal end for extending from said flash chamber, said narrow and larger outside diameter portions being separated by a shoulder for engaging the proximal end of said flash chamber, said flash plug body including an aperture extending through said distal end proximal portions of said body, said aperture exhibiting a relatively smaller interior diameter within said distal end than the interior diameter of said aperture within said proximal end; and an insert formed of a porous material and located within said aperture intermediate the terminal ends of said aperture to retain blood within said flash chamber and within said aperture distal said insert, said insert being sized so as to be insertable through said proximal end of said aperture and incapable of passage through said relatively smaller diameter distal portion of said aperture. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A flash plug for an I.V. catheter comprising:
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a flash plug body formed of a polymeric material, and including a relatively narrow diameter distal end for engaging a catheter flash chamber and a relatively larger diameter proximal end for extending from said flash chamber, said narrow and larger diameter portions being separated by a shoulder for engaging the proximal end of said flash chamber, said flash plug body including an aperture extending through said distal and proximal portions of said body; and an insert formed of a porous material and located within said aperture, wherein the interior diameter of said aperture is tapered from a relatively larger diameter at said proximal end of said body to a relatively smaller diameter at said distal end, wherein said diameter at said distal end of said body is less than the diameter of said porous insert, and wherein said interior diameter of said aperture is tapered such that said porous insert becomes securely seated when inserted into said flash plug body from said proximal end of said body to a position which is substantially within said narrow diameter portion of said body.
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9. A flash plug for an I.V. catheter comprising:
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a flash plug body formed of a polymeric material, and including a relatively narrow diameter distal end for engaging a catheter flash chamber and a relatively larger diameter proximal end for extending from said flash chamber, said narrow and larger diameter portions being separated by a shoulder for engaging the proximal end of said flash chamber, said flash plug body including an aperture extending through said distal and proximal portions of said body; and an insert formed of a porous material and located within said aperture. wherein said aperture of said body further includes a gate means formed within said aperture at a location proximal the intended position of said insert within said aperture for inhibiting passage of said insert out said proximal end of said body. - View Dependent Claims (10, 11)
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Specification