Catheter system for one-handed guidewire and catheter advancement

A catheter system, comprising:

• a catheter assembly, comprising:
• a catheter hub, comprising a distal end, a proximal end, and a lumen extending through the distal end of the catheter hub and the proximal end of the catheter hub;
• and
• a catheter comprising a distal tip and extending from the distal end of the catheter hub;
• and
• a safety housing disposed proximal to the catheter hub;
• a needle safety clip disposed within the safety housing;
• a main housing, comprising a distal end and a proximal end;
• a needle hub fixed within the main housing;
• an introducer needle comprising a sharp distal tip and a proximal end, wherein the proximal end of the introducer needle is secured within the needle hub;
• a guidewire comprising a first end and a second end, wherein the first end is configured to advance distally through the introducer needle, wherein the second end of the guidewire is fixed within the main housing;
• a guidewire slider;
• and
• a guidewire carriage, wherein the guidewire carriage comprises a U-shaped slot therethrough;
• wherein the guidewire slider is configured to move from a proximal position to a distal position to distally advance the guidewire, wherein when the guidewire slider is disposed in the distal position, the guidewire is advanced beyond the distal tip of the catheter, wherein in response to the movement of the guidewire slider from the proximal position to the distal position, the guidewire carriage uncouples from the guidewire slider such that further advancement of the guidewire slider with respect to the main housing does not advance the guidewire, wherein when the guidewire slider is in the proximal position, the guidewire is disposed in the U-shaped slot in a double-throw configuration such that there is a 2:1 advancement ratio between the first end of the guidewire and the guidewire slider.

A catheter system, comprising:

• a catheter assembly, comprising:
• a catheter hub, comprising a distal end, a proximal end, and a lumen extending through the distal end of the catheter hub and the proximal end of the catheter hub;
• and
• a catheter comprising a distal tip and extending from the distal end of the catheter hub;
• and
• a safety housing disposed proximal to the catheter hub;
• a needle safety clip disposed within the safety housing;
• a main housing, comprising a distal end and a proximal end;
• a needle hub fixed within the main housing;
• an introducer needle comprising a sharp distal tip and a proximal end, wherein the proximal end of the introducer needle is secured within the needle hub;
• a guidewire comprising a first end and a second end, wherein the first end is configured to advance distally through the introducer needle, wherein the second end of the guidewire is fixed within the main housing;
• a guidewire slider;
• and
• a guidewire carriage permanently coupled to the guidewire slider;
• wherein the guidewire slider is configured to move from a proximal position to a distal position to distally advance the guidewire, wherein when the guidewire slider is disposed in the distal position, the guidewire is advanced beyond the distal tip of the catheter, wherein when the guidewire slider moves from the proximal position to the distal position, the guidewire slider is configured to engage the safety housing such that further distal advancement of the guidewire slider to the distal position advances the catheter and the guidewire at a same time.