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US 12,642,941 B2Granted
Securing a catheter device
AssigneeINTERRAD Medical, Inc.
InventorsErik Andrew Boyum, Jeffrey D. Killion
Life of this patent
Estimating the term…
Abstract
Some embodiments of a medical system include a catheter device, such as an intravenous cannula device, having an external anchor device and a subcutaneous anchor device to secure a distally extending cannula of the device in a selected position relative to a skin penetration point.
Claims12
A medical system for anchoring an intravenous cannula device with respect to a skin surface, the system comprising:
- a proximal hub comprising:
- a hub body having a proximal end, a distal end, and a longitudinal axis extending from the proximal end to the distal end;
- and
- an intravenous cannula comprising:
- a flexible catheter having an exterior circumferential surface configured to extend through a skin penetration point into a target body vessel, the flexible catheter extending distally of the proximal hub to a distal opening at a distal end of the flexible catheter;
- and
- a tissue anchor device positioned on an exterior surface of the flexible catheter between the distal opening and the distal end of the hub;
- and
- an external anchor device movably coupled along the longitudinal axis to the hub body, the external anchor device configured to at least partially surround the flexible catheter, wherein the external anchor device defines a stopper element with a lateral dimension greater than the exterior circumferential surface of the flexible catheter;
- and
- wherein the tissue anchor device is configured to anchor under a skin layer of a patient and the external anchor device is configured to be positioned distal to the hub body and proximal of the tissue anchor device such that the external anchor device is adjacent to the skin surface.
8 more elements
A medical system for anchoring an intravenous cannula device with respect to a skin surface, the system comprising:
- a proximal hub comprising:
- a hub body having a proximal end, a distal end, and a longitudinal axis extending from the proximal end to the distal end;
- and
- an external anchor device movably coupled along the longitudinal axis to the hub body and configured to at least partially surround a flexible catheter, the external anchor device having an advancement mechanism and a contact portion, the contact portion having a lateral dimension greater than a diameter of a skin opening dimension defined by the flexible catheter, and the external anchor device configured to be advanced in a direction of the longitudinal axis of the hub body along the flexible catheter;
- and
- an intravenous cannula comprising:
- the flexible catheter configured to extend through a skin penetration point and define the skin opening dimension, the flexible catheter extending distally of the proximal hub to a distal opening at a distal end of the flexible catheter;
- and
- a tissue anchor device positioned on an exterior surface of the flexible catheter between the distal opening and the distal end of the hub;
- and
- wherein the tissue anchor device is configured to anchor under a skin layer of a patient and the external anchor device is configured to be positioned distal of the hub body and proximal of the tissue anchor device such that the external anchor device is adjacent to the skin surface.
8 more elements
A method for securing an intravenous cannula in a selected position, the method comprising:
- inserting a distal portion of an intravenous cannula into a skin penetration point of a skin surface;
- advancing the intravenous cannula until a distal end enters a target body lumen and at least one subcutaneous anchor is positioned in a subcutaneous region under the skin surface;
- engaging an external anchor by applying a first force to a tab of the external anchor in a first direction parallel to a longitudinal axis of the intravenous cannula and toward the skin surface, to secure the intravenous cannula in a position above and adjacent to the skin surface;
- performing a medical procedure using the intravenous cannula;
- after the medical procedure is performed, disengaging the external anchor by applying a second force to the tab of the external anchor in a second direction parallel to a longitudinal axis of the intravenous cannula and away from the skin surface;
- and
- removing the intravenous cannula through the skin penetration point.
4 more elements
Dependencies are inferred from the claim text.