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US 9,844,649 B2Granted
Telescopic wire guide
AssigneeCook Medical Technologies LLC
InventorDavid M. Hardin, Jr.
Life of this patent
Estimating the term…
Abstract
A telescopic wire guide is disclosed. The telescopic wire guide comprises an outer wire having a proximal end and a distal end. The outer wire has a lumen formed from the proximal end through the distal end. The telescopic wire guide further comprises a core wire disposed within the lumen and slidably movable therealong relative to the outer wire for distally telescopically extending the wire guide a predetermined length.
Claims17
A telescopic wire guide configured for insertion through a working channel of an endoscope into a biliary or pancreatic duct, the telescopic wire guide comprising:
- an outer wire having a proximal end and a distal end, the outer wire having a lumen formed from the proximal end through the distal end, the outer wire having a constant outer diameter along its entire length;
- and
- a core wire disposed within the lumen and slidably movable therealong relative to the outer wire for distally telescopically extending the wire guide a predetermined length, the core wire comprising a proximal portion and a distal portion, the proximal portion comprising a stop to limit distal movement of the core wire, the distal portion defining a distal end that is retractable into the lumen of the outer wire proximally beyond the distal end of the outer wire, wherein the stop abuts the proximal end of the outer wire to define the predetermined length and defining an extended position in which the core wire extends the predetermined length from the outer wire, the core wire having a first length and the outer wire having a second length, the first length being greater than the second length, the core wire configured to slidably retract from the extended position to a retracted position in which the distal portion is disposed entirely within the lumen and the distal end of the core wire is disposed proximally from the distal end of the outer wire;
- wherein the outer wire is a helical coil defining the lumen formed from the proximal end through the distal end thereof.
1 more element
A telescopic wire guide configured for insertion through a working channel of an endoscope into a biliary or pancreatic duct, the telescopic wire guide comprising:
- an outer wire having a proximal end and a distal end, the outer wire having a lumen formed from the proximal end through the distal end;
- and
- a core wire disposed within the lumen and slidably movable therealong relative to the outer wire for distally telescopically extending the wire guide a predetermined length, the core wire comprising a proximal portion and a distal portion, the proximal portion comprising a stop to limit distal movement of the core wire, the distal portion defining a distal end that is retractable into the lumen of the outer wire proximally beyond the distal end of the outer wire, wherein the stop abuts the proximal end of the outer wire to define the predetermined length and defining an extended position in which the core wire extends the predetermined length from the outer wire, the core wire having a first length and the outer wire having a second length, the first length being greater than the second length, the core wire configured to slidably retract from the extended position to a retracted position in which the distal portion is disposed entirely within the lumen and the distal end of the core wire is disposed proximally from the distal end of the outer wire;
- wherein the core wire can be fully withdrawn from the outer wire;
- wherein the telescopic wire guide is configured to allow a medical component to pass over an entire length of the telescopic wire guide while the telescopic wire guide is disposed in a channel port of an endoscope;
- wherein the outer wire is a helical coil defining the lumen formed from the proximal end through the distal end thereof.
3 more elements
A telescopic wire guide configured for insertion through a working channel of an endoscope into a biliary or pancreatic duct, the telescopic wire guide comprising:
- an outer wire having a proximal end and a distal end, the outer wire having a lumen formed from the proximal end through the distal end, the outer wire having a constant outer diameter along its entire length;
- and
- a core wire disposed within the lumen and slidably movable therealong relative to the outer wire for distally telescopically extending the wire guide a predetermined length, wherein the core wire comprises a proximal portion and a distal portion, the proximal portion comprising a stop to limit distal movement of the core wire, the distal portion defining a distal end that is retractable into the lumen of the outer wire proximally beyond the distal end of the outer wire, wherein the stop abuts the proximal end of the outer wire to define the predetermined length and defining an extended position in which the core wire extends the predetermined length from the outer wire, the core wire configured to slidably retract from the extended position to a retracted position in which the distal portion is disposed entirely within the lumen and the distal end of the core wire is disposed proximally from the distal end of the outer wire;
- wherein the outer wire is a helical coil defining the lumen formed from the proximal end through the distal end thereof.
1 more element
Dependencies are inferred from the claim text.