Medical tube set
First Claim
1. A medical tube set from which, after insertion of said tube set into a patient, a stylet may be retracted, comprising:
- a tube for insertion into a patient, anda stylet disposed within said tube, said stylet comprising;
a core unit;
an apical tip unit attached to a distal end of said core unit and arranged to engage with a distal end of said tube for insertion of said tube and stylet into a patient; and
an expansion member disposed within said tube which is movable along the core unit to a posterior part of the apical tip unit in the core unit, and such that said expansion member is deployable to expand said distal end of said tube so as to allow retraction of said stylet from said tube;
wherein said distal end of said tube is tapered; and
wherein the external diameter of said expansion member is equal to, or larger than, the external diameter of said apical tip unit, andwherein said apical tip unit overlaps an edge of said distal end of said tube for insertion of said tube and said stylet into a patient.
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0 Petitions
Accused Products
Abstract
A medical tube set includes a tube and a stylet that improves the insertability of tube. The stylet structure comprises an inner core that can be inserted into the tube, an apical tip that is affixed to the apical end of inner core, and a movable expansion member that can move between apical tip of inner core and stop that is provided at a predetermined distance from apical tip. An engagement is formed at the posterior end of apical tip, and is able to engage the apical end of tube. By positioning movable expansion member within apical end of tube, apical end can expand radially outwards so that apical tip can pass through.
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Citations
14 Claims
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1. A medical tube set from which, after insertion of said tube set into a patient, a stylet may be retracted, comprising:
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a tube for insertion into a patient, and a stylet disposed within said tube, said stylet comprising; a core unit; an apical tip unit attached to a distal end of said core unit and arranged to engage with a distal end of said tube for insertion of said tube and stylet into a patient; and an expansion member disposed within said tube which is movable along the core unit to a posterior part of the apical tip unit in the core unit, and such that said expansion member is deployable to expand said distal end of said tube so as to allow retraction of said stylet from said tube; wherein said distal end of said tube is tapered; and wherein the external diameter of said expansion member is equal to, or larger than, the external diameter of said apical tip unit, and wherein said apical tip unit overlaps an edge of said distal end of said tube for insertion of said tube and said stylet into a patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for inserting a medical tube set into a patient comprising the steps of:
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inserting a tube into a patient to a desired position wherein a distal end of said tube is engaged with an apical tip unit of a stylet disposed within said tube; pushing a core unit of said stylet in a distal direction causing a mobile expansion member located along said core unit to expand a distal end of said tube; pulling said core unit in a proximal direction such that said apical tip unit engages with said expansion member; and withdrawing said stylet from said tube.
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14. A medical tube set from which, after insertion of said tube set into a patient, a stylet may be retracted, comprising;
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a tube for insertion into a patient, and a stylet disposed within said tube, said stylet comprising; a core unit; an apical tip unit attached to a distal end of said core unit and arranged to engage with a distal end of said tube for insertion of said tube and stylet into a patient; and an expansion member disposed within said tube which is movable along the core unit to the posterior part of the apical tip unit in the core unit, and such that said expansion member is deployable to expand said distal end of said tube so as to allow retraction of said stylet from said tube; wherein said distal end of said tube is tapered; and wherein the external diameter of said expansion member is equal to, or larger than, the external diameter of said apical tip unit, and wherein said apical tip unit overlaps an edge of said distal end of said tube for insertion of said tube and said stylet into a patient, and wherein said expansion member is spherical.
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Specification