Access device
AssigneeInnoVital, LLC
InventorsAmit Navin Shah, Curt Steven Kothera, Pablo Javier Sztein, Gregory John Hiemenz
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Abstract
The present invention is a simple-to-use access device with a safety feature. A catheter advancer (30) is slidably and rotatably integrated with a base (10) to guide advancement of a catheter (50) linearly along the insertion path of a needle (60) and catheter (50). The catheter advancer (30) engages the base (10), catheter (50) and needle (60) and both sequences and delimits relative movement between the base (10), catheter advancer (30), catheter assembly (50) and needle (60). The access device stabilizes and guides the critical needle insertion and catheter advancement steps of a complication-prone and very common procedure.
Claims19
A device for inserting a catheter, comprising:
- a base configured to be gripped by a user;
- a needle extending along an axis from a needle hub to a distal incising end with a beveled tip;
- a catheter extending along said axis from a hub to a distal end and slidably translatable over said needle;
- and
- a catheter advancer rotatably seated in said base and constrained thereby to a predetermined range of rotational movement around said axis, the catheter advancer being engageable with said catheter and configured to translate said range of rotational movement into a predetermined initial safety advancement of said catheter linearly along said axis and relative to said base and said catheter advancer to a fixed distal position ensheathing the incising end of said needle, wherein the catheter advancer remains entirely proximal of the distal tip of said needle during the predetermined initial safety advancement.
A device for inserting a catheter, comprising:
- a base configured to be gripped by a user, said base defining a channel extending along an axis;
- a needle having a distal incising end and a proximal needle hub, the distal incising end having a beveled tip extending along a length LB of said axis;
- a catheter assembly comprising a proximal hub and a catheter that is slidably translatable over the incising end of said needle, thereby defining a trim length LT extending along said axis between a distal end of said catheter and a proximal end of said beveled tip of said needle;
- and
- a catheter advancer rotatably seated in said base, constrained therein to a predetermined range of rotational movement around said axis, and engageable with said catheter assembly and configured for translation of said range of rotational movement of said catheter advancer into linear movement of said catheter assembly in a distal direction along said axis by a predetermined length LSAFETY prior to threading said catheter into a patient, wherein LSAFETY is greater than or equal to a sum of LB plus LT plus a nominal distance LN within a range from 1.0% to 40% of LB plus LT;
- wherein the catheter advancer remains entirely proximal of the distal incising end of said needle during translation of said catheter assembly along said axis by said predetermined length.
Dependencies are inferred from the claim text.