Catheter assembly with guidewire, catheter and puncture needle
A catheter assembly includes a catheter, a catheter hub fixed to the proximal end portion of the catheter, a hollow inner needle removably located in the catheter and including a distal end portion at which is located a needlepoint to puncture skin of a patient, and a guide wire slidably positioned in the inner needle. The guide wire is longer than both the inner needle and the catheter. A wire operating member is connected to the guide wire and is displaceable in the forward direction relative to the inner needle and the catheter. A main body is detachably connected to the catheter hub and includes a finger-engaging projection at a distal portion of the main body that is engageable by a user's finger to advance the main body and the catheter in the forward direction.
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;
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 central axis, 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 that 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;
the user-contacting surface of the wire operating member being an uneven surface in which a plurality of upstanding ridges are spaced apart from one another along the longitudinal direction of the wire operating member, the plurality of upstanding ridges including a distal-most upstanding ridge that is distal-most of all of the plurality of upstanding ridges and a proximal-most upstanding ridge that is proximal-most of all of the plurality of upstanding ridges;
a main body detachably connected to the catheter hub, the main body including a finger-engaging projection configured to be engaged by a finger of the user to advance the main body, the catheter hub and the catheter in the forward direction relative to the guide wire;
the main body being rotatable relative to the catheter hub so that the main body, inclusive of the finger-engaging projection, is movable from a horizontal position in which the main body overlies the central axis of the guide wire towards a vertical position; and
the finger-engaging projection being distal of the proximal-most upstanding ridge in the initial state of the catheter assembly.
2. The catheter assembly according to claim 1 , wherein the main body includes two connection pieces that each include an inner surface, the inner surfaces of the two connection pieces facing one another, the two connection pieces being spaced apart from one another so that a space exists between the inner surfaces of the two spaced apart connection pieces, a part of the catheter hub being positioned in the space between the inner surfaces of the two spaced apart connection pieces.
3. The catheter assembly according to claim 2 , wherein the catheter hub includes projections positioned on opposite sides of the catheter hub, each of the connection pieces engaging one of the projections.
4. The catheter assembly according to claim 1 , wherein the main body is rotatable relative to the catheter hub so that the main body rotates about an axis that passes through the catheter hub and is transverse to a central axis of the catheter hub.
5. The catheter assembly according to claim 1 , wherein the main body includes a proximal end and a distal end, the finger-engaging projection being positioned closer to the distal end of the main body than the proximal end of the main body.
6. The catheter assembly according to claim 1 , wherein the main body is rotatable relative to the catheter hub so that the main body rotates about an axis that passes through the catheter hub and is transverse to a central axis of the catheter hub, the finger-engaging projection being positioned distal of the axis about which the main body rotates.
7. The catheter assembly according to claim 1 , wherein the finger-engaging projection is a first finger-engaging projection, the main body including a second finger-engaging projection spaced from the first finger-engaging projection.
8. The catheter assembly according to claim 1 , wherein the main body is rotatable relative to the catheter hub about a rotation axis that is horizontal when the catheter and the catheter hub are positioned horizontally.
9. A catheter assembly comprising:
a catheter possessing a length;
a catheter hub fixed to the catheter so that movement of the catheter hub results in movement of the catheter;
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 inside the inner needle to be slidably movable in a forward direction, the guide wire possessing a central axis, 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 that is displaceable in the forward direction relative to the inner needle and the catheter, and that 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 is configured to be contacted by a user to apply a force to the wire operating member to displace the wire operating member in the forward direction;
the user-contacting surface of the wire operating member being an uneven surface in which a plurality of ridges are spaced apart from one another along a longitudinal direction of the wire operating member, the plurality of ridges including a distal-most ridge that is distal-most of all of the plurality of ridges and a proximal-most ridge that is proximal-most of all of the plurality of ridges;
a main body detachably connected to the catheter hub, the main body including a finger-engaging projection configured to be engaged by a finger of the user to advance the main body, the catheter hub and the catheter in the forward direction relative to the guide wire;
the main body being rotatable relative to the catheter hub so that the main body, inclusive of the finger-engaging projection, is movable from a horizontal position in which the main body overlies the central axis of the guide wire towards a vertical position; and
the finger-engaging projection being distal of the proximal-most ridge in the initial state of the catheter assembly.
10. The catheter assembly according to claim 9 , wherein the main body includes two connection pieces that each include an inner surface, the inner surfaces of the two connection pieces facing one another, the two connection pieces being spaced apart from one another so that a space exists between the inner surfaces of the two spaced apart connection pieces, a part of the catheter hub being positioned in the space between the inner surfaces of the two spaced apart connection pieces.
11. The catheter assembly according to claim 10 , wherein the catheter hub includes projections positioned on opposite sides of the catheter hub, each of the connection pieces engaging one of the projections.
12. The catheter assembly according to claim 9 , wherein the finger-engaging projection is a first finger-engaging projection, the main body including a second finger-engaging projection spaced from the first finger-engaging projection.
13. The catheter assembly according to claim 9 , wherein the main body is rotatable relative to the catheter hub about a rotation axis that is horizontal when the catheter and the catheter hub are positioned horizontally.
14. The catheter assembly according to claim 9 , wherein the main body is rotatable relative to the catheter hub so that the main body rotates about an axis that passes through the catheter hub and is transverse to a central axis of the catheter hub.
15. The catheter assembly according to claim 9 , wherein the main body includes a proximal end and a distal end, the finger-engaging projection being positioned closer to the distal end of the main body than the proximal end of the main body.
16. The catheter assembly according to claim 9 , wherein the main body is rotatable relative to the catheter hub so that the main body rotates about an axis that passes through the catheter hub and is transverse to a central axis of the catheter hub, the finger-engaging projection being positioned distal of the axis about which the main body rotates.
17. A catheter assembly comprising:
a catheter possessing a proximal end portion, the catheter possessing a length;
a catheter hub fixed to the catheter;
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 central axis, 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 that 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 is configured to be contacted by a user to apply a force to displace the wire operating member in the forward direction;
the user-contacting surface of the wire operating member being an uneven surface in which a plurality of upstanding ridges are spaced apart from one another along the longitudinal direction of the wire operating member, the plurality of upstanding ridges including a distal-most upstanding ridge that is distal-most of all of the plurality of upstanding ridges and a proximal-most upstanding ridge that is proximal-most of all of the plurality of upstanding ridges;
a main body detachably connected to the catheter hub, the main body including a finger-engaging projection configured to be engaged by a finger of the user to advance the main body, the catheter hub and the catheter in the forward direction relative to the guide wire;
the main body being rotatable relative to the catheter hub so that the main body, inclusive of the finger-engaging projection, is movable from a position in which the main body overlies the central axis of the guide wire towards a vertical position; and
the finger-engaging projection being distal of the proximal-most upstanding ridge in the initial state of the catheter assembly.