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US 11,992,634 B2Granted
Arterial access needle with proximal port
AssigneeMerit Medical Systems, Inc.
InventorsMichael Dean Haslam, Richard P. Jenkins
Life of this patent
Estimating the term…
Abstract
Devices used to provide access the vasculature are disclosed. The devices may be configured to provide access to a blood vessel, such as an artery. The devices may include a catheter assembly disposed over a needle assembly. The devices may also include a barrel assembly coupled to the needle assembly. A guidewire may be displaceable by barrel assembly within a needle. The needle may include a proximal and distal port.
Claims18
A vascular access device, comprising:
- a needle assembly, comprising:
- a needle hub;
- a needle coupled to the needle hub, the needle comprising:
- a distal end;
- a needle lumen extending from the distal end of the needle;
- a distal port extending from an outside surface of the needle to the needle lumen;
- and
- a proximal port extending from the outside surface of the needle to the needle lumen;
- a catheter assembly disposed over a portion of the needle assembly, the catheter assembly comprising:
- a catheter hub;
- an elongate tube coupled to the catheter hub;
- and
- a barrel assembly coupled to the needle hub, the barrel assembly comprising:
- an elongate barrel comprising a first flashback channel and a second flashback channel;
- a slider member slidably coupled to the elongate barrel;
- and
- a guidewire coupled to the slider member, wherein the guidewire is configured to be slidably disposed within the needle lumen;
- and
- a flow restrictor operably coupled to the first flashback channel, wherein the second flashback channel is configured to fill with flashback blood prior to the first flashback channel filling with the flashback blood, the flow restrictor comprising a protrusion extending proximally from the needle hub into the first flashback channel, and wherein an outer diameter of the protrusion is less than an inner diameter of the first flashback channel,
- wherein the guidewire comprises a proximal portion and a linearly shaped distal portion,
- wherein a diameter of the linearly shaped distal portion of the guidewire is greater than a diameter of the proximal portion of the guidewire, and
- wherein the linearly shaped distal portion of the guidewire is configured to inhibit blood flow within the needle lumen around the linearly shaped distal portion of the guidewire between the distal port and the proximal port when the linearly shaped distal portion of the guidewire is disposed between the distal port and the proximal port.
19 more elements
A method of placing a vascular access device into a blood vessel, comprising:
- obtaining the vascular access device comprising a needle assembly, a catheter assembly, and a barrel assembly coupled to a needle hub of the needle assembly;
- puncturing the blood vessel with a needle of the needle assembly of the vascular access device;
- inducing a blood flow through a distal portion of a lumen of the needle;
- directing the blood flow from the distal portion of the lumen of the needle through a needle distal port into an elongate annular space defined by an inner surface of a catheter body of the catheter assembly and an outer surface of the needle;
- directing the blood flow from the elongate annular space through a needle proximal port into the needle lumen, and
- filling a first flashback channel of an elongate barrel of the barrel assembly with flashback blood prior to filling a second flashback channel with the flashback blood responsive to a flow restrictor operably coupled to the second flashback channel, the flow restrictor comprising a protrusion extending proximally from the needle hub into the second flashback channel, and wherein an outer diameter of the protrusion is less than an inner diameter of the second flashback channel,
- wherein directing the blood flow comprises inhibiting the needle lumen with a guidewire between the needle distal port and the needle proximal port,
- wherein the guidewire comprises a proximal portion and a distal portion, the distal portion of the guidewire comprising an elongated shape and extending from proximate the needle distal port to proximate the needle proximal port, and wherein a diameter of the distal portion of the guidewire is greater than a diameter of the proximal portion of the guidewire.
5 more elements
A vascular access device, comprising:
- a needle assembly, comprising:
- a needle hub;
- a needle coupled to the needle hub, the needle comprising a distal end, a needle lumen extending from the distal end of the needle, a distal port extending from an outside surface of the needle to the needle lumen, and a proximal port extending from the outside surface of the needle to the needle lumen;
- a catheter assembly disposed over a portion of the needle assembly, the catheter assembly comprising a catheter hub and an elongate tube coupled to the catheter hub;
- and
- a barrel assembly coupled to the needle hub, the barrel assembly comprising:
- an elongate barrel comprising a first flashback channel and a second flashback channel;
- a slider member slidably coupled to the elongate barrel;
- and
- a guidewire coupled to the slider member, wherein the guidewire is configured to be slidably disposed within the needle lumen;
- and
- a flow restrictor operably coupled to the first flashback channel, wherein the second flashback channel is configured to fill with flashback blood prior to the first flashback channel filling with the flashback blood, the flow restrictor comprising a protrusion extending proximally from the needle hub into the first flashback channel, and wherein an outer diameter of the protrusion is less than an inner diameter of the first flashback channel.
9 more elements
Dependencies are inferred from the claim text.