Device for introducing a catheter guide wire into a vessel
Inventors
Carrez, Jean-Luc • Dalle, Valery • Guyomarc'h, Pierrick
Assignees
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Publication Number
US-8251923-B2
Publication Date
2012-08-28
Expiration Date
Abstract
A device for introducing a catheter guide wire into a vessel of a patient has a connector and a straightener for a J-shaped end of the guide wire, the connector having an axial bore, and its distal end and proximal end permitting a connection of the Luer type to a needle and to a syringe, respectively. The connector supports, on its inside, a sealing valve equipped with a slit, and the axial bore has, in its portion between the sealing valve and the distal end of the connector, a leaktight mating surface, the shape of which is such that it permits liquid-tight mating with the outer surface of the distal end of the straightener, when the latter is introduced into the connector via the sealing valve.
Core Innovation
The invention relates to a device for introducing a wire with a J-shaped end into a blood or lymph vessel of a patient, where the wire is used for guiding a catheter. The device comprises a connector and a straightener of the J-shaped end of the guide wire, and the connector includes a body with an axial bore extending between a distal end and a proximal end.
The distal end of the connector is adapted for providing a Luer type connection with a base of a needle, and the proximal end of the connector provides a Luer type connection with a distal end of a syringe. The connector further comprises a sealing valve provided with a slit intersecting an axis of the axial bore, and an axial bore portion between the sealing valve and the distal end of the connector is adapted to receive a distal end of the straightener.
The axial bore portion has a mating surface in leaktight engagement with an outer surface of the distal end of the straightener when the straightener is disposed within the sealing valve. The arrangement further includes a connector distal end length that prevents J-end curving inside the needle, and sealing behavior that limits backflow and reduces blood leakage.
Claims Coverage
The partial content includes one independent claim, with multiple dependent claims refining the connector, valve, and straightener interface and sealing geometry. The independent claim defines the overall device architecture and functional sealing relationships between the sealing valve, the straightener, and the connector axial bore.
J-shaped guide wire introducing device for blood or lymph vessel
A device comprising a connector and a straightener of a J-shaped end of a guide wire for introducing the wire into a blood or lymph vessel of a patient, where the wire is used for guiding a catheter.
Connector with axial bore and dual Luer type connections
A connector having a body with an axial bore extending between a distal end and a proximal end, with the distal end adapted for providing a Luer type connection with a base of a needle and the proximal end adapted for providing a Luer type connection with a distal end of a syringe.
Sealing valve with slit intersecting axial bore axis
A sealing valve provided with a slit intersecting an axis of the axial bore, in which an axial bore portion between the sealing valve and the distal end is adapted to receive a distal end of the straightener.
Leaktight mating surface with straightener within sealing valve
An axial bore portion that has a mating surface in leaktight engagement with an outer surface of the distal end of the straightener when the straightener is disposed within the sealing valve.
Connector mating surface shaped as frusto-cone
The device where the connector mating surface has a frusto-conical shape in which the diameter decreases toward the distal end.
Tubular distal connector end length preventing J-end curving
The device where the connector has a tubular distal end of specified length that prevents the J-shaped guide wire end from curving between the connector and the needle.
Proximal orifice sized for liquid-tight connection with straightener
The device where the connector proximal end has an orifice sized to match the outer surface portion of the straightener to create a liquid-tight connection when the straightener is placed within the sealing valve.
Cap and lock assembly maintaining sealing valve
The device where the connector includes a cap at the proximal end and a lock at the distal end using complementary assembling means to assemble and maintain the sealing valve when connected.
Duckbill sealing valve
The device where the sealing valve has a duckbill shape.
Across the independent and dependent claims, the inventive coverage centers on introducing a J-shaped guide wire using a connector and straightener, providing Luer type connections to a needle and a syringe, and providing sealing through a slit valve and a leaktight mating surface with the straightener disposed within the sealing valve, with additional refinements specifying frusto-conical mating geometry, tubular distal length constraints, orifice matching for liquid-tight engagement, cap/lock assembly, and a duckbill valve shape.
Stated Advantages
Minimizes blood loss by reducing backflow and blood leakage.
Prevents curving of the J-shaped guide wire end inside the needle.
Provides a liquid-tight interface between the sealing valve and the straightener/connector distal end.
Documented Applications
Introducing a J-shaped guide wire into a patient's blood or lymph vessel to guide a catheter using a connector/straightener system connected between a needle and a syringe in a Seldinger-type catheter placement context.
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