Anchoring an intravenous cannula
First Claim
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1. A medical system for anchoring an intravenous cannula device in a subcutaneous region along an underside of a skin layer, comprising:
- an intravenous cannula device including a flexible catheter having a distal opening configured to provide fluid communication into a targeted vessel, a proximal connector hub, and means for subcutaneously anchoring an outer wall of the flexible catheter with tissue in a subcutaneous region along an underside of a skin layer, the means for subcutaneously anchoring being positioned along the flexible catheter between the distal tip opening of the flexible catheter and the proximal connector hub, the flexible catheter including a lumen and extending distally of the proximal connector hub to the distal opening, and the proximal connector hub including a thread pattern configured to releasably connect with an external fluid line; and
an inserter tool removably coupled to the intravenous cannula device so as to insert the flexible catheter of the intravenous cannula device through a skin penetration point and into the targeted vessel, the inserter tool including a handle and an insertion needle extending distally from the handle, the insertion needle being slidably engaged with the lumen of the flexible catheter of the intravenous cannula device, wherein the inserter tool is removable from the intravenous cannula device when the insertion needle is proximally withdrawn from the lumen of the flexible catheter,wherein the means for subcutaneously anchoring is configured to engage the tissue in the subcutaneous region along the underside of the skin layer when the flexible catheter of the intravenous cannula device is inserted through the skin penetration point and into the targeted vessel.
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Abstract
Some embodiments of a medical system include a subcutaneous anchor device that extends outwardly from side wall of an intravenous cannula so as to secure the intravenous cannula in a position relative to a skin penetration point.
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Citations
19 Claims
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1. A medical system for anchoring an intravenous cannula device in a subcutaneous region along an underside of a skin layer, comprising:
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an intravenous cannula device including a flexible catheter having a distal opening configured to provide fluid communication into a targeted vessel, a proximal connector hub, and means for subcutaneously anchoring an outer wall of the flexible catheter with tissue in a subcutaneous region along an underside of a skin layer, the means for subcutaneously anchoring being positioned along the flexible catheter between the distal tip opening of the flexible catheter and the proximal connector hub, the flexible catheter including a lumen and extending distally of the proximal connector hub to the distal opening, and the proximal connector hub including a thread pattern configured to releasably connect with an external fluid line; and an inserter tool removably coupled to the intravenous cannula device so as to insert the flexible catheter of the intravenous cannula device through a skin penetration point and into the targeted vessel, the inserter tool including a handle and an insertion needle extending distally from the handle, the insertion needle being slidably engaged with the lumen of the flexible catheter of the intravenous cannula device, wherein the inserter tool is removable from the intravenous cannula device when the insertion needle is proximally withdrawn from the lumen of the flexible catheter, wherein the means for subcutaneously anchoring is configured to engage the tissue in the subcutaneous region along the underside of the skin layer when the flexible catheter of the intravenous cannula device is inserted through the skin penetration point and into the targeted vessel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of using an intravenous cannula device, comprising:
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inserting a needle portion of an inserter tool through a skin penetration point and into a targeted vessel, wherein an intravenous cannula device is removably coupled to the inserter tool such that a flexible catheter of the intravenous cannula device is advanced through the skin penetration point and into the targeted vessel while a subcutaneous anchor integrally formed as a unitary structure with an outer wall of the flexible catheter is positioned in a subcutaneous region along an underside of a skin layer; removing the inserter tool from the intravenous cannula device such that the needle portion of the inserter tool is slidably withdrawn from a lumen of the flexible catheter while a distal opening of the flexible catheter remains in the targeted vessel to provide fluid communication with a targeted vessel and the subcutaneous anchor remains in the subcutaneous region along the underside of the skin layer; threadably engaging an external fluid line to a proximal connector hub of the intravenous cannula device while the flexible catheter remains in the targeted vessel and the subcutaneous anchor remains in the subcutaneous region along the underside of the skin layer, wherein the subcutaneous anchor is positioned between a distal tip of the flexible catheter and the proximal connector hub, and wherein the subcutaneous anchor includes at least one surface to engage tissue in the subcutaneous region proximate to the skin penetration point; and infusing a fluid from the proximal connector hub through the lumen of the flexible catheter and into the targeted vessel. - View Dependent Claims (19)
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Specification