US 11,793,976 B2
Catheter assembly with guidewire, catheter and puncture needle
Masahiro Ishida, Kanagawa (JP)
Assigned to TERUMO KABUSHIKI KAISHA, Tokyo (JP)
Filed by TERUMO KABUSHIKI KAISHA, Tokyo (JP)
Filed on May 7, 2021, as Appl. No. 17/314,412.
Application 17/314,412 is a continuation of application No. 16/390,436, filed on Apr. 22, 2019, granted, now 11,020,568.
Application 16/390,436 is a continuation of application No. 16/014,259, filed on Jun. 21, 2018, granted, now 10,279,149, issued on May 7, 2019.
Application 16/014,259 is a continuation of application No. 15/941,632, filed on Mar. 30, 2018, granted, now 10,238,841, issued on Mar. 26, 2019.
Application 15/941,632 is a continuation of application No. 15/083,965, filed on Mar. 29, 2016, granted, now 10,004,878, issued on Jun. 26, 2018.
Application 15/083,965 is a continuation of application No. 14/960,484, filed on Dec. 7, 2015, granted, now 10,099,038, issued on Oct. 16, 2018.
Application 14/960,484 is a continuation of application No. PCT/JP2014/058490, filed on Mar. 26, 2014.
Claims priority of application No. 2013-123465 (JP), filed on Jun. 12, 2013.
Prior Publication US 2021/0268239 A1, Sep. 2, 2021
Int. Cl. A61M 25/06 (2006.01); A61M 25/09 (2006.01); A61M 5/158 (2006.01); A61M 25/00 (2006.01); A61M 25/01 (2006.01)
CPC A61M 25/0606 (2013.01) [A61M 5/158 (2013.01); A61M 25/0097 (2013.01); A61M 25/0108 (2013.01); A61M 25/0612 (2013.01); A61M 25/0631 (2013.01); A61M 25/09041 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A catheter assembly comprising:
a catheter possessing a proximal end portion, the catheter possessing a length;
a catheter hub fixed to the proximal end portion of the catheter, the catheter hub including oppositely facing sides and a top side positioned between the oppositely facing sides;
a hollow inner needle including a distal end portion at which is located a needlepoint to puncture skin of a patient, the hollow inner needle being removably located in the catheter and possessing a length;
a guide wire slidably positioned in the inner needle to be slidably movable in a forward direction, the guide wire possessing a length, the length of the guide wire being longer than the length of the inner needle and longer than the length of the catheter, the guide wire possessing a distal end portion positioned proximal of the needlepoint during an initial state of the catheter assembly before the needlepoint punctures the skin of the patient and configured to project distally beyond the needlepoint after the needlepoint punctures the skin of the patient;
a wire operating member which extends in a longitudinal direction, is displaceable in the forward direction relative to the inner needle and the catheter, and is connected to the guide wire so that displacement of the wire operating member in the forward direction results in movement of the guide wire in the forward direction, the wire operating member including a user-contacting surface that faces away from the guide wire and that is configured to be contacted by a user to apply a force to displace the wire operating member in the forward direction;
a main body detachably connected to the catheter hub by virtue of portions of the main body engaging the oppositely facing sides of the catheter hub, the main body also including an overlying portion that overlies the top side of the catheter hub, the oppositely facing sides of the catheter hub that are engaged by the portions of the main body being different from the top side of the catheter hub, the overlying portion of the main body being different from the portions of the main body that engage the oppositely facing sides of the catheter hub, the main body also including a finger-engaging projection configured to be engaged by a finger of the user to advance an entirety of the main body, the catheter hub and the catheter in the forward direction relative to the guide wire; and
a distal portion of the wire operating member overlying a portion of the main body in the initial state of the catheter assembly before the needlepoint punctures the skin of the patient.