Catheter-to-Device Locking System
First Claim
1. A catheter locking component for assuredly locking a catheter end onto a stem of a medical device, where the stem has at least one protuberance therealong having a preselected maximum diameter larger than the inner diameter of the catheter'"'"'s lumen for enabling the catheter end portion to grip thereonto after passing thereover, comprising:
- the locking sleeve having proximal and distal ends and defining a channel of preselected diameter extending therethrough for a catheter to extend through the channel at least when the catheter has been urged onto and around the stem;
the sleeve including a compression surface along the channel having a diameter less than the preselected channel diameter when the sleeve is positioned around the stem onto which the catheter end portion has been positioned in a manner that the compression surface is axially offset proximally from the at least one protuberance.
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Accused Products
Abstract
A locking component (100) for locking a catheter proximal end section (32) onto a stem (56) of a medical device such as a venous access port assembly (50). The locking component (100) includes a smaller diameter compression surface (106) along a larger diameter channel (108) therethrough. The device stem (56) includes at least one protuberance (58) of greater diameter than the inner diameter of the catheter end portion (32), and a smaller diameter stem section (66) proximally of the protuberance. Preferably, all protuberances 58) of the stem are rounded. When a stop section (112) of the locking component (100) abuts a corresponding stop section at the proximal end of the stem (56), the compression surface (106) is disposed over and around the smaller diameter stem section (66) and compresses the portion of the catheter proximal end section (32) interposed therebetween thus locking the catheter onto the stem.
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Citations
22 Claims
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1. A catheter locking component for assuredly locking a catheter end onto a stem of a medical device, where the stem has at least one protuberance therealong having a preselected maximum diameter larger than the inner diameter of the catheter'"'"'s lumen for enabling the catheter end portion to grip thereonto after passing thereover, comprising:
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the locking sleeve having proximal and distal ends and defining a channel of preselected diameter extending therethrough for a catheter to extend through the channel at least when the catheter has been urged onto and around the stem; the sleeve including a compression surface along the channel having a diameter less than the preselected channel diameter when the sleeve is positioned around the stem onto which the catheter end portion has been positioned in a manner that the compression surface is axially offset proximally from the at least one protuberance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An assembly of a medical device and a catheter proximal end, comprising:
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a medical device having a stem having a passageway therethrough; a catheter having at least one lumen therethrough and having a proximal end portion extending to a proximal end; and a locking component having distal and proximal ends and a channel therethrough; wherein the locking component includes a compression surface along the channel that has a smaller diameter than the remainder of the channel; wherein the medical device stem has at least one protuberance extending radially outwardly therefrom to a largest outer diameter larger than the inner diameter of the catheter at the proximal end portion, and the stem has a smaller diameter section proximally of the at least one protuberance; and wherein the locking component is adapted to be movable along the catheter and onto the catheter proximal end portion after the catheter proximal end portion has been urged onto the stem and over and beyond the at least one protuberance and along the smaller diameter section of the stem, such that the compression surface of the locking diameter compresses against the catheter end portion disposed over the smaller diameter stem section when the locking component has been fully inserted onto the stem. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification