Catheter introducer
First Claim
1. A catheter introducer comprising:
- a sheath section having distal and proximal end portions;
a generally cylindrical sheath hub formed on said proximal end Portion of said sheath section, said sheath hub including one or more handle members extending laterally therefrom, an outer circumference and a longitudinal passageway extending therethrough;
a generally elongate and tubular sheath member formed on said distal end portion of said sheath section and including a longitudinal passageway extending therethrough and said passageway extending in flow communication with said passageway of said sheath hub;
a dilator section having distal and proximal end portions thereon and said dilator section being operatively associated with said sheath section in use;
a generally cylindrical dilator hub formed on said proximal end portion of said dilator section;
a dilator locking mechanism operatively associated with said dilator section, said dilator locking mechanism including one or more enlarged flange members extending laterally from a portion thereof and said flange members being sized to be rotatable manipulated with respect to said sheath hub;
a locking mechanism operatively associated with said sheath hub and said dilator locking mechanism wherein said locking mechanism is movable between a first position wherein said flange members of said dilator locking mechanism are laterally aligned with said one or more handle members of said sheath hub and said dilator section is coupled to said sheath section and a second position wherein said dilator section is separable from said sheath section; and
wherein said one or more flange members are rotatable with respect to said dilator section.
5 Assignments
0 Petitions
Accused Products
Abstract
A catheter introducer which allows a dilator member and a sheath member to be engaged with and disengaged from each other promptly and smoothly. The catheter introducer includes a sheath member consisting of a sheath portion and a sheath hub and a dilator member consisting of a dilator portion and a dilator hub and a locking mechanism operatively connecting the sheath member and dilator member during the insertion of the catheter introducer into the body of the patient. The dilator hub includes one or more flange members associated therewith and the flange member is rotatable with respect to the sheath hub to selectively engage the sheath hub in a first position and disengage the sheath hub in a second position.
290 Citations
18 Claims
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1. A catheter introducer comprising:
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a sheath section having distal and proximal end portions; a generally cylindrical sheath hub formed on said proximal end Portion of said sheath section, said sheath hub including one or more handle members extending laterally therefrom, an outer circumference and a longitudinal passageway extending therethrough; a generally elongate and tubular sheath member formed on said distal end portion of said sheath section and including a longitudinal passageway extending therethrough and said passageway extending in flow communication with said passageway of said sheath hub; a dilator section having distal and proximal end portions thereon and said dilator section being operatively associated with said sheath section in use; a generally cylindrical dilator hub formed on said proximal end portion of said dilator section; a dilator locking mechanism operatively associated with said dilator section, said dilator locking mechanism including one or more enlarged flange members extending laterally from a portion thereof and said flange members being sized to be rotatable manipulated with respect to said sheath hub; a locking mechanism operatively associated with said sheath hub and said dilator locking mechanism wherein said locking mechanism is movable between a first position wherein said flange members of said dilator locking mechanism are laterally aligned with said one or more handle members of said sheath hub and said dilator section is coupled to said sheath section and a second position wherein said dilator section is separable from said sheath section; and wherein said one or more flange members are rotatable with respect to said dilator section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A catheter introducer comprising:
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a sheath section having distal and proximal end portions; a generally cylindrical sheath hub formed on said proximal end portion of said sheath section, said sheath hub including an outer circumference and a longitudinal passageway extending therethrough; a generally elongate and tubular sheath member formed on said distal end portion of said sheath section and including a longitudinal passageway extending therethrough and said passageway extending in flow communication with said passageway of said sheath hub; a dilator section having distal and proximal end portions thereon and said dilator section being operatively associated with said sheath section in use; a generally cylindrical dilator hub formed on said proximal end portion of said dilator section; a dilator locking mechanism operatively associated with said dilator section, said dilator locking mechanism including one or more enlarged flange members extending laterally from a portion thereof and said flange members being sized to be rotatably manipulated with respect to said sheath hub and said dilator hub; and a locking mechanism operatively associated with said sheath hub and said dilator locking mechanism wherein said locking mechanism is movable between a first position wherein said dilator section is coupled to said sheath section and a second position wherein said dilator section is separable from said sheath section. - View Dependent Claims (12, 13, 14)
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15. A method of using a catheter introducer, including the steps of:
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inserting a dilator member having a dilator hub and dilator portion thereon into a sheath member having a sheath hub and a sheath portion thereon such that an enlarged flange member operatively associated with the dilator hub is misaligned with a laterally extending handle member on the sheath member; rotating the flange member into alignment with the handle member on the sheath member so that a locking mechanism associated with the dilator member lockingly engages a portion of the sheath member to prevent longitudinal movement therebetween; inserting a portion of the catheter introducer into the body of a patient by rotational and longitudinal movement of the catheter introducer; and applying a rotational force to the flange member with respect to the sheath hub and dilator hub to release the dilator member from the sheath hub to allow longitudinal movement between the dilator member and the sheath member. - View Dependent Claims (16, 17, 18)
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Specification