Needle-based medical device including needle guide and method for constructing
Inventors
Assignees
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Publication Number
US-8021511-B2
Publication Date
2011-09-20
Expiration Date
Abstract
A needle-based medical device including a needle guide and a method for constructing the same are disclosed. The needle-based medical device includes a tube having a first lumen; a needle guide which is dimensioned to be inserted into the lumen of the tube, and a needle. The needle is inserted such that an end is positioned in the needle guide. A glue may also be provided to secure the needle guide to the tube. In one embodiment, the tube may be made of extruded plastic.
Core Innovation
The invention relates to a needle-based medical device construction using a tube having a distal end and a proximal end, and a first lumen extending between the distal end and the proximal end. A needle guide is provided to be inserted into the distal end of the first lumen, and the needle guide includes a body having an outer surface at a first radial distance from a longitudinal axis of the body and at least one rib extending longitudinally in a distal direction from the body, where the at least one rib is fixedly distanced from the longitudinal axis by a second radial distance greater than the first radial distance.
In the construction, the needle guide is inserted into the distal end of the first lumen such that the at least one rib engages the first lumen. A proximal end of a needle is inserted into the needle guide such that a sharp tip of the needle extends distally of the needle guide. Glue is introduced into a glue well between the needle guide and the first lumen, and the glue is cured.
The construction further provides glue well structure and securing between the needle guide and the first lumen as part of the device construction. The needle guide and the tube are configured to cooperate mechanically through rib engagement, and the device construction includes curing of the introduced glue. Additional embodiments described include mechanical fit constraints and limiting insertion using a depth stop, and accessibility of the glue well during manufacture using needle-shield cutouts or lumen access.
Claims Coverage
The partial content provides one independent claim (clm-00001) directed to constructing a needle-based medical device. The main inventive features revolve around coupling a needle guide with a tube lumen using longitudinal ribs, positioning a needle so its sharp tip extends distally of the needle guide, and securing the assembly by introducing glue into a glue well and curing it.
Tube with first lumen and inserted needle guide ribs engaged in lumen
Providing a tube having a distal end and a proximal end and a first lumen extending between the distal end and the proximal end; providing a needle guide with a body and at least one rib extending longitudinally in a distal direction; and inserting the needle guide into the distal end of the first lumen such that the at least one rib engages the first lumen.
Needle insertion through needle guide with distally extending sharp tip
Inserting a proximal end of a needle into the needle guide, such that a sharp tip of the needle extends distally of the needle guide.
Glue well between needle guide and lumen with glue curing
Introducing glue into a glue well between the needle guide and the first lumen; and curing the glue.
Overall, the claim coverage is anchored on inserting a needle guide into a tube lumen so longitudinal ribs engage the first lumen, inserting a needle into the needle guide so the sharp tip extends distally of the needle guide, and introducing glue into a glue well between the needle guide and the first lumen followed by curing.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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