Medical tube set

• US 8,177,752 B2
• Filed: 03/07/2007
• Issued: 05/15/2012
• Est. Priority Date: 03/09/2006
• Status: Active Grant

• Current Assignee: Kpr U.S., LLC (Cardinal Health, Inc.)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Sakai, Yosuke
• Primary Examiner(s): Sirmons, Kevin C
• Assistant Examiner(s): Osinski, Bradley
• Application Number:
  US11/682,916
• Publication Number:
  US 20070213672A1
• Time in Patent Office: 1,896 Days
• Field of Search: 604/164.01, 604/164.06, 604/166.01, 604/164.03, 604/277, 604/27
• US Class Current: 604/164.01
• CPC Class Codes: A61M 25/0102 Insertion or introduction using an inner stiffening member, e.g. stylet or push-rod

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.

Claims

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, 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.

2. The medical tube set according to claim 1, wherein said expansion member includes a substantially conical region for expanding said distal end of said tube.

3. The medical tube set according to claim 1, wherein said expansion member is cup-shaped.

4. The medical tube set according to claim 1, wherein said apical tip unit includes a recess at a proximal end thereof for receiving said expansion member.

5. The medical tube set according to claim 1, wherein said stylet includes a first stop unit attached to said core unit for limiting the movement of said expansion member.

6. The medical tube set according to claim 5, wherein said stylet includes a second stop unit positioned distally respective to said first stop unit.

7. The medical tube set according to claim 1 wherein the tube (10) comprises a tube main unit, branch tubes branching off from a proximal end of the tube main unit, and an imaging balloon.

8. The medical tube set according to claim 7 wherein the branch tubes are connected to a suction device or a supply device.

9. The medical tube set according to claim 1 wherein the tube comprises an irrigation side hole and multiple flushing side holes.

10. The medical tube set according to claim 1 further comprising a clamp consisting of an engagement member, a tip, support leaves, a pin bridging the support leaves, and pressure leaves.

11. The medical tube set according to claim 1 wherein the core unit is pushed in a distal direction causing an expansion member located on the core unit to expand a distal end of the tube, or wherein the core unit is pulled in a proximal direction to engage the apical tip unit with the expansion member.

12. The medical tube set according to claim 11 wherein said expansion member is spherical.

13. A method for inserting a medical tube set into a patient comprising the steps of:

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.

14. 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, 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.