Retractable needle catheter delivery apparatus
Inventors
Kujawa, John • Anstett, Michael • Bold, William
Assignees
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Publication Number
US-12496434-B2
Publication Date
2025-12-16
Expiration Date
Abstract
A catheter insertion system includes a housing extending along a longitudinal axis. A needle extends distally from a distal end of the housing. The needle has a longitudinal passage coaxially aligned with the housing. A catheter has a length and is sized and shaped to be advanced from a retracted position within the longitudinal passage of the needle to an extended position with at least a portion of the catheter length extending beyond a distal tip of the needle. The needle is typically configured to be retracted back into the housing after the catheter has been advanced thus providing an integrated catheter and catheter insertion apparatus. After needle retraction, the housing may be taped to the patient's skin while the needle remains protected within the housing. A luer on the catheter may then be connected to a fluid or other source in an otherwise conventional manner.
Core Innovation
A catheter insertion apparatus includes a housing having a longitudinal passage and a needle having a lumen that extends distally from a distal end of the housing in an initial needle configuration. The needle is fully retractable within the longitudinal passage of the housing in a subsequent needle configuration. A catheter having a distal port and a proximal connector is proximally retracted within the needle in an initial catheter configuration and is distally advanceable from the needle to position the distal port of the catheter distally beyond a distal tip of the needle.
The distal tip of the needle is configured to be inserted into a blood vessel while the needle is extending distally from the housing. The catheter is configured to be advanced from the distal tip of the needle while the needle remains extended in the blood vessel. After the catheter has been advanced into the blood vessel, the needle is configured to be fully retracted over the catheter and into the housing, such that the distal tip of the needle remains protected in the housing after retraction.
The catheter includes a proximal connector comprising a luer fitting. A plurality of locking teeth disposed on the luer fitting are configured to lock the catheter in a fully advanced configuration. The disclosed embodiments further describe coordination between needle retraction and catheter deployment, including locking and retaining interactions so that the catheter remains in a fully advanced configuration while the needle is retracted into the housing.
Claims Coverage
The independent claim covers a catheter insertion apparatus with an integrated retractable needle and catheter deployment sequence, including a luer-fitting proximal connector with locking teeth.
Retractable needle with protected distal tip and catheter deployment beyond needle tip
A housing having a longitudinal passage; a needle with a lumen extending distally from a distal end of the housing in an initial needle configuration and fully retractable within the longitudinal passage in a subsequent needle configuration; and a catheter distally advanceable from the needle so that the distal port of the catheter is positioned distally beyond a distal tip of the needle while the proximal connector remains available for attachment to a fluid delivery tube, with the needle fully retracted over the catheter into the housing after catheter advancement.
Blood vessel insertion while needle remains extended then fully retracted over catheter
The distal tip of the needle is configured to be inserted into a blood vessel while the needle is extending distally from the housing; the catheter is configured to be advanced from the distal tip of the needle while the needle remains extended in the blood vessel; and the needle is configured to be fully retracted over the catheter and into the housing after the catheter has been advanced into the blood vessel.
Luer-fitting proximal connector with locking teeth to lock catheter in fully advanced configuration
The proximal connector of the catheter comprises a luer fitting, wherein a plurality of locking teeth disposed on the luer fitting are configured to lock the catheter in a fully advanced configuration.
Overall, the independent claim centers on coordinated catheter deployment beyond a distally extending retractable needle, followed by full needle retraction into a housing while the catheter remains locked in a fully advanced configuration by a luer-fitting with locking teeth.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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