Medical device connector fitting
First Claim
1. A releasable medical line connector system, comprising:
- an adaptor comprising an elongated tubular portion;
an elongated body, at least a portion of which is adapted to insert into the tubular portion of the adaptor, and at least one radially extending member disposed upon the elongated body, the at least one radially extending member having at least one contact surface;
a spin nut comprising a generally tubular body slidably and rotatably disposed upon the elongated body, and a receptacle disposed distally upon the spin nut and having an internal cross section, the receptacle comprising a lip extending inwardly towards the elongated body and having at least one contact surface configured and arranged to interact with the at least one contact surface of the radially extending member when the receptacle surrounds the radially extending member so as to transfer both axial and rotational forces between the spin nut and the elongated body; and
a retaining ridge disposed on the elongated body and configured to cooperate with the lip to limit proximal longitudinal movement of the spin nut relative to the elongated body and allow distal longitudinal movement of the spin nut along the elongated body.
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Accused Products
Abstract
A releasable medical device connector comprises a connector fitting with a spin nut which connects to an adaptor. The connector fitting has at least one radially extending member with a variable radius cross section. The spin nut is disposed upon the connector fitting proximal of the radially extending member and is both axially slidable and rotatable upon the elongated body of the connector fitting. A screw thread within a proximal portion of the spin nut is used to secure the tapering portion of the connector fitting to an external thread disposed upon the adaptor. To release the connector, the spin nut is unscrewed from the adaptor and slid so that a distal receptacle of the spin nut engages the radially extending member of the connector fitting. With the spin nut and connector fitting engaged, the medical line can be released from the adaptor by twisting and pulling upon the spin nut. The radially extending member of the connector fitting may also be used to secure the medical line to a retainer comprising one or more slots.
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Citations
25 Claims
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1. A releasable medical line connector system, comprising:
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an adaptor comprising an elongated tubular portion; an elongated body, at least a portion of which is adapted to insert into the tubular portion of the adaptor, and at least one radially extending member disposed upon the elongated body, the at least one radially extending member having at least one contact surface; a spin nut comprising a generally tubular body slidably and rotatably disposed upon the elongated body, and a receptacle disposed distally upon the spin nut and having an internal cross section, the receptacle comprising a lip extending inwardly towards the elongated body and having at least one contact surface configured and arranged to interact with the at least one contact surface of the radially extending member when the receptacle surrounds the radially extending member so as to transfer both axial and rotational forces between the spin nut and the elongated body; and a retaining ridge disposed on the elongated body and configured to cooperate with the lip to limit proximal longitudinal movement of the spin nut relative to the elongated body and allow distal longitudinal movement of the spin nut along the elongated body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 24, 25)
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17. A releasable medical line connector system, comprising:
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an adaptor comprising an elongated tubular portion; a connector fitting comprising an elongated body, at least a portion of which is adapted to insert into the tubular portion of the adaptor, at least one radially extending member disposed upon the elongated body and having an external cross section which varies radially about its circumference, and a ridge, wherein the elongated body has a substantially constant outer diameter at least between the at least one radially extending member and the ridge; and a spin nut comprising a generally tubular body slidably and rotatably disposed upon the elongated body of the connector fitting, and a receptacle being inset within the spin nut and having an internal cross section which varies radially about its circumference, at least a portion of the radially extending member of the connector fitting being adapted to be inserted into the receptacle of the spin nut, said portion extending entirely around the axis of the fitting elongated body, wherein the receptacle comprises a lip having a distal-facing surface and a proximal-facing surface, the distal-facing surface contacting a proximal surface of the at least one radially extending member at least when the spin nut is slid distally along the elongated body, and the proximal surface contacting the ridge at least when the spin nut is slid proximally along the elongated body, the ridge being configured to allow distal longitudinal movement of the spin nut along the elongated body. - View Dependent Claims (18, 19, 20, 21)
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22. A releasable medical line connector system, comprising:
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an adaptor comprising an elongated tubular portion; a connector fitting comprising an elongated body extending generally along a longitudinal axis and having an external radius R1, at least a portion of which is adapted to insert into the tubular portion of the adaptor, and at least one radially extending member disposed upon the elongated body, the at least one radially extending member having at least one contact surface, and the at least one radially extending member having a maximum radius R2; a spin nut comprising a generally tubular body slidably and rotatably disposed upon the elongated body of the connector fitting, and a distal wall including a receptacle having an internal cross section, the receptacle having at least one contact surface, the at least one contact surface configured and arranged to interact with the at least one contact surface of the spin nut when the receptacle surrounds the radially extending member so as to transfer both axial and rotational forces between the spin nut and the connector fitting, the spin nut having an external radius R3, the radii R1, R2 and R3 are sized such that R3-R2<
R2-R1; anda ridge circumscribing at least a portion of the elongated body, the ridge being spaced from the at least one radially extending member along the longitudinal axis and having a maximum radius R4 so as to allow distal longitudinal movement of the spin nut along the elongated body, wherein an inner radius of a portion of the spin nut located on a proximal side of the distal wall is greater than R4.
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23. A releasable medical line connector system, comprising:
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an adaptor comprising an elongated tubular portion; a connector fitting comprising an elongated body, at least a portion of which is adapted to insert into the tubular portion of the adaptor, at least one radially extending member disposed upon the elongated body, the at least one radially extending member having an external cross section which forms a polygon, and a retaining ridge extending outwardly from the elongated body; and a spin nut comprising a generally tubular body slidably and rotatably disposed upon the elongated body of the connector fitting, and a receptacle disposed distally upon the spin nut, the receptacle comprising a wall forming an opening through which the elongated body passes and having an internal cross section which varies radially about its circumference, the spin nut surrounding an outer circumference of the polygon at least when the spin nut is slid distally along the elongated body, the opening being sized so as to prevent the spin nut from sliding distally beyond the at least one radially extending member and proximally beyond the retaining ridge, wherein the retaining ridge is configured to allow distal longitudinal movement of the spin nut along the elongated body.
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Specification