Integrated catheter-placement devices and methods for mitigating blood egress
Disclosed herein are integrated catheter-placement devices and methods thereof. An exemplary device includes an intravascular catheter, a needle, an access guidewire, and a blood egress-mitigating means for mitigating blood egress from the device. The intravascular catheter includes a catheter tube and catheter hub. The catheter extends from a body of the device. The needle includes a needle shaft and a needle hub. The needle shaft extends through the catheter tube by way of a catheter-tube lumen thereof. The access guidewire is disposed in a needle lumen of the needle. The blood egress-mitigating means mitigates blood egress from the device by mitigating blood egress from an annular space within the needle shaft while still allowing the access guidewire to axially move within the needle lumen. The annular space is defined by a luminal surface of the needle shaft and a surface of the access guidewire.
1 . An integrated catheter-placement device, comprising:
an intravascular catheter including a catheter tube and catheter hub, the intravascular catheter extending from a body of the integrated catheter-placement device in at least a ready-to-deploy state of the integrated catheter-placement device;
a needle including a needle shaft and a needle hub, the needle shaft extending through the catheter tube by way of a catheter-tube lumen thereof in at least the ready-to-deploy state of the integrated catheter-placement device;
an access guidewire disposed in a needle lumen of the needle; and
a blood egress-mitigating means for mitigating blood egress from an annular space within the needle shaft defined by a luminal surface of the needle shaft and a surface of the access guidewire while still allowing the access guidewire to axially move within the needle lumen, the blood egress-mitigating means including a reservoir integral with a proximal portion of the needle shaft, the reservoir providing a space for collecting blood.
2 . The device of claim 1 , wherein the proximal portion of the needle shaft terminates with the reservoir.
3 . The device of claim 2 , wherein the reservoir includes a guidewire aperture in a proximal end thereof through which the access guidewire is allowed to axially move.
4 . The device of claim 3 , wherein the blood egress-mitigating means further includes a composition including a superabsorbent polymer, a cellulosic polymer, a coagulant, or a combination thereof disposed in the reservoir for absorbing or coagulating blood therewith.
5 . The device of claim 2 , wherein the blood egress-mitigating means further includes a composition including a superabsorbent polymer, a cellulosic polymer, a coagulant, or a combination thereof disposed in the reservoir for absorbing or coagulating blood therewith.
6 . The device of claim 1 , wherein the blood egress-mitigating means includes an amount of an oil-based lubricant disposed in the needle lumen in the proximal portion of the needle shaft, the oil-based lubricant blocking or retarding blood flow through a proximal end of the needle shaft.
7 . The device of claim 6 , wherein the needle shaft includes a cutout through a needle-shaft wall in the proximal portion of the needle shaft, the cutout configured for injecting the oil-based lubricant into the needle lumen.
8 . The device of claim 1 , wherein the reservoir includes a guidewire aperture in a proximal end thereof through which the access guidewire is allowed to axially move.
9 . The device of claim 1 , wherein the blood egress-mitigating means further includes a composition including a superabsorbent polymer, a cellulosic polymer, a coagulant, or a combination thereof disposed in the reservoir for absorbing or coagulating blood therewith.
10 . The device of claim 1 , wherein the blood egress-mitigating means includes a polymeric coating over the surface of the access guidewire, the polymeric coating assuming a portion of the needle lumen, thusly contributing to a reduced annular space for retarding blood flow therethrough.
11 . A method of an integrated catheter-placement device, comprising:
obtaining the integrated catheter-placement device, the integrated catheter-placement device including:
an intravascular catheter including a catheter tube and catheter hub, the intravascular catheter extending from a body of the integrated catheter-placement device in at least a ready-to-deploy state of the integrated catheter-placement device; and
a needle including a needle shaft and a needle hub, the needle shaft extending through the catheter tube by way of a catheter-tube lumen thereof in at least the ready-to-deploy state of the integrated catheter-placement device;
establishing a needle tract from an area of skin to a blood-vessel lumen of a patient with the needle, the establishing of the needle tract causing blood to flash back into the integrated catheter-placement device without egressing from an annular space within the needle shaft defined by a luminal surface of the needle shaft and a surface of an access guidewire in accordance with a blood egress-mitigating means for mitigating blood egress therefrom, the blood egress-mitigating means including a reservoir integral with a proximal portion of the needle shaft that provides a space for collecting blood;
advancing the access guidewire disposed in a needle lumen of the needle into the blood-vessel lumen;
advancing the catheter tube over the needle and into the blood-vessel lumen; and
withdrawing both the needle and the access guidewire from the blood-vessel lumen leaving the intravascular catheter behind with the catheter tube disposed in the blood-vessel lumen of the patient.
12 . The method of claim 11 , wherein the blood egress-mitigating means further includes a composition including a superabsorbent polymer, a cellulosic polymer, a coagulant, or a combination thereof disposed in the reservoir for absorbing or coagulating blood therewith.
13 . The method of claim 12 , wherein the reservoir includes a guidewire aperture in a proximal end thereof through which the access guidewire is allowed to axially move.
14 . The method of claim 13 , wherein the proximal portion of the needle shaft terminates with the reservoir.
15 . The method of claim 11 , wherein the reservoir includes a guidewire aperture in a proximal end thereof through which the access guidewire is allowed to axially move.
16 . The method of claim 11 , wherein the proximal portion of the needle shaft terminates with the reservoir.
17 . The method of claim 12 , wherein the proximal portion of the needle shaft terminates with the reservoir.