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US 10,238,841 B2Granted
Catheter Assembly
AssigneeTerumo Kabushiki Kaisha
InventorMasahiro Ishida
Life of this patent
Estimating the term…
Abstract
A method involves puncturing a blood vessel of a patient with the sharp needle point of an inner needle, axially advancing a guide wire operating member connected to a guide wire to axially advance the guide wire relative to the inner needle to move the guide wire along the blood vessel, and axially advancing a catheter operating member connected to a catheter to axially advance the catheter in the distal direction relative to both the inner needle and the guide wire such that the distal end of the catheter is positioned at a target position in the blood vessel.
Claims14
A method comprising:
- positioning a catheter assembly adjacent a patient, the catheter assembly comprising:
- an inner needle having a sharp needlepoint at a distal end;
- a gripping member connected to the inner needle;
- a catheter fixed to a catheter hub, the catheter possessing a proximal-most end and a distal end, the catheter hub possessing a proximal-most end;
- a catheter operating member connected to the catheter hub and possessing a distal end and a proximal end;
- a guide wire possessing a distal end and slidably positioned in the inner needle;
- and a guide wire operating member connected to the guide wire so that movement of the guide wire operating member results in movement of the guide wire, the guide wire operating member being movable in a longitudinal direction relative to the inner needle and the catheter;
- puncturing a blood vessel of the patient with the sharp needle point of the inner needle while gripping the gripping member;
- axially moving the guide wire operating member to axially advance the guide wire in a distal direction relative to the inner needle to introduce the guide wire into the blood vessel while maintaining the position of the gripping member, the axially moving of the guide wire operating member to axially advance the guide wire being accomplished by applying a force to the guide wire operating member, the axially moving of the guide wire operating member being performed by contacting a part of the guide wire operating member with a finger while the distal end of the guide wire is positioned proximal of the sharp needlepoint, and then performing the axially moving of the guide wire operating member while the finger is in contact with the part of the guide wire operating member, the part of the guide wire operating member that is contacted by the finger while the distal end of the guide wire is positioned proximal of the sharp needlepoint axially overlapping a portion of the catheter operating member located between the distal end of the catheter operating member and the proximal end of the catheter operating member prior to use of the catheter operating member;
- and
- axially moving the catheter operating member to axially advance the catheter in the distal direction relative to both the inner needle and the guide wire such that the distal end of the catheter is inserted to a target position in the blood vessel, the axially moving of the catheter operating member to axially advance the catheter in the distal direction being accomplished by moving the finger or a different finger into direct contact with an operating portion of the catheter operating member to apply a force to the operating portion of the catheter operating member, the finger or the different finger directly contacting the operating portion of the catheter operating member at a location on the operating portion of the catheter operating member, the location of the operating portion of the catheter operating member that is directly contacted by the finger or the different finger being distal of the proximal-most end of the catheter hub to begin axially moving the catheter operating member in the distal direction.
8 more elements
A method comprising:
- positioning a catheter assembly adjacent a patient, the catheter assembly comprising:
- an inner needle having a sharp needlepoint at a distal end;
- a gripping member connected to the inner needle;
- a catheter fixed to a catheter hub, the catheter hub possessing a proximal-most end and the catheter possessing a distal end;
- a catheter operating member connected to the catheter hub;
- a guide wire possessing a distal end and slidably positioned in the inner needle;
- and a guide wire operating member connected to the guide wire so that movement of the guide wire operating member results in movement of the guide wire, the guide wire operating member being movable in a longitudinal direction relative to the inner needle and the catheter;
- puncturing a blood vessel of the patient with the sharp needle point of the inner needle while gripping the gripping member;
- axially advancing the guide wire operating member to axially advance the guide wire in a distal direction relative to the inner needle to move the guide wire along the blood vessel, the axially advancing of the guide wire operating member to axially advance the guide wire being accomplished by contacting a part of the guide wire operating member with a finger while the distal end of the guide wire is positioned proximal of the sharp needlepoint, and then performing the axially advancing of the guide wire operating member while the finger is in contact with the part of the guide wire operating member, the part of the guide wire operating member that is contacted by the finger while the distal end of the guide wire is positioned proximal of the sharp needlepoint axially overlapping a portion of the catheter operating member;
- and
- axially advancing the catheter operating member to axially advance the catheter in the distal direction relative to both the inner needle and the guide wire such that the distal end of the catheter is positioned at a target position in the blood vessel, the axially advancing of the catheter operating member to axially advance the catheter in the distal direction being accomplished by directly contacting an operating portion of the catheter operating member with the finger or a different finger to apply a force to the operating portion of the catheter operating member, the finger or the different finger directly contacting the operating portion of the catheter operating member at a location on the operating portion of the catheter operating member, the location of the operating portion of the catheter operating member that is directly contacted by the finger or the different finger being distal of the proximal-most end of the catheter hub to begin axially moving the catheter operating member in the distal direction.
8 more elements
Dependencies are inferred from the claim text.