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Publication Number
US-10639431-B2
Publication Date
2020-05-05
Expiration Date
Abstract
Needle shielding systems are disclosed. The needle shielding system comprises a needle, a cover sleeve, and a needle shield. The needle has a needle tip and a needle bulge spaced apart from the needle tip. The cover sleeve is slidably mounted over the needle and comprises an end portion having an internal diameter smaller than the width of the needle bulge, and a cover sleeve shaft extending from the end portion towards the needle tip and having an internal diameter larger than the width of the needle bulge. The needle shield comprises a base plate slidably mounted over the needle adjacent to the end portion, and at least one resilient arm extending from the base plate towards the needle tip. In use the needle shield and cover sleeve move along the needle until the end portion contacts the needle bulge and the cover sleeve shaft and the arm cover the needle tip.
Core Innovation
The disclosed invention relates to a needle shielding system that includes a needle having a needle tip and a needle bulge spaced apart from the needle tip, and a cover sleeve slidably mounted over the needle. The cover sleeve includes a proximal end portion with an internal diameter smaller than the width of the needle bulge, with an axial extension of at least 0.5 mm. The cover sleeve further includes a cover sleeve shaft extending distally from the proximal end portion toward the needle tip, with an internal diameter larger than the width of the needle bulge.
A needle shield is adapted to move along the needle with the cover sleeve, such that when the proximal end portion contacts the needle bulge, the cover sleeve shaft and the arm cover the needle tip. The needle shield includes a base plate slidably mounted over the needle adjacent to the proximal end portion, and at least one resilient arm extending distally from the base plate toward the needle tip. In the system, first and second arms span an entirety of the longitudinal length of the cover sleeve shaft while the first and second arms are substantially parallel to each other.
In further described structures, the resilient arms may include first and second arms configured to have hooked tips on opposing sides of a longitudinal space between them. A cover sleeve embodiment includes an end portion adapted to contact the outer surface of the needle, an expanding portion adjacent to the end portion, a cover sleeve shaft adjacent to the expanding portion, and a flange adjacent to the cover sleeve shaft on an end opposing the end portion.
Claims Coverage
The consolidated content contains three independent claims, each centering on a needle shielding system with a spaced needle bulge, a slidably mounted cover sleeve whose end portion contacts the bulge, and substantially parallel first and second arms spanning the cover sleeve shaft longitudinal length to cover the needle tip. The coverage further includes a base plate slidably mounted over the needle and a cover sleeve embodiment with an expanding portion and flange.
Needle shielding system with spaced needle bulge and sleeve/arm coverage
A needle having a needle tip and a needle bulge spaced apart from the needle tip, a cover sleeve slidably mounted over the needle with a proximal end portion having an internal diameter smaller than a width of the needle bulge and an axial extension at least 0.5 mm, and a cover sleeve shaft with an internal diameter larger than the width of the needle bulge; a needle shield including a base plate slidably mounted over the needle adjacent to the proximal end portion and at least one resilient arm extending distally from the base plate toward the needle tip; the resilient arm includes first and second arms configured to span an entirety of a longitudinal length of the cover sleeve shaft while the first and second arms are substantially parallel to each other; wherein in use the needle shield and cover sleeve move along the needle until the proximal end portion contacts the needle bulge and the cover sleeve shaft and the arm cover the needle tip.
Needle shielding system with sleeve end portion contacting bulge and parallel arms
A needle having a needle tip and a needle bulge spaced apart from the needle tip; a cover sleeve slidably mounted over the needle comprising an end portion having a diameter smaller than the width of the needle bulge and an axial extension at least 0.5 mm, and a cover sleeve shaft having a longitudinal length extending from the end portion toward the needle tip and having a diameter larger than the width of the needle bulge; first and second arms configured to span an entirety of the longitudinal length of the cover sleeve shaft while the first and second arms are substantially parallel to each other; wherein in use the cover sleeve moves along the needle until the end portion contacts the needle bulge and the cover sleeve shaft covers the needle tip.
Cover sleeve with expanding portion and flange with parallel arms
A cover sleeve for shielding a needle comprising an end portion adapted to contact an outer surface of the needle with an axial extension at least 0.5 mm; an expanding portion adjacent to the end portion; a cover sleeve shaft having a longitudinal length and being adjacent to the expanding portion; first and second arms configured to span an entirety of the longitudinal length of the cover sleeve shaft while the first and second arms are substantially parallel to each other; and a flange adjacent to the cover sleeve shaft on an end of the sleeve opposing the end portion.
The core claim coverage is directed to shielding by sliding a cover sleeve having an end portion with a specified axial extension of at least 0.5 mm that contacts a spaced needle bulge, and using substantially parallel first and second arms spanning the entirety of the cover sleeve shaft longitudinal length so that the cover sleeve shaft and the arms cover the needle tip.
Stated Advantages
Avoids scratching/tearing of the catheter hub lumen.
Reduces manufacturing complexity and cost compared to stainless steel shields.
Enables assembly precision via sleeve end flanges/conical flanges and guiding surfaces that prevent shelving/scrape.
Reduces blood splatter via a sleeve compartment.
Documented Applications
No documented applications found
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