Telescoping Adhesive Delivery Sleeve for Wide-Area Endoscopic Application
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Solution Overview
Problem
Current methods for delivering adhesive to control bleeding in the gastrointestinal tract using an injection needle are limited to single-point application, requiring repeated repositioning and increasing procedure time.
Innovation Solution
A medical delivery device with a two-part assembly comprising an inner and outer sleeve, allowing for distributed delivery of adhesive through a plurality of openings, and optionally a telescoping design for mixing components, ensuring the adhesive is delivered over a wider surface area without obstructing the endoscope's working channel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If an injection needle is used to deliver adhesive through the endoscope working channel, then the adhesive can be delivered to the treatment site, but the injection needle is limited to delivering adhesive at a single point and requires repeated repositioning
Solution Approach 1:
The delivery device is segmented into multiple functional components: an inner sleeve for adhesive delivery, an outer sleeve for positioning and support, and a telescoping mechanism for controlled movement. The distal tip includes multiple openings arranged in a pattern to deliver adhesive across a wider surface area, eliminating the need for repeated repositioning of a single injection needle.
Solution Approach 2:
The invention transitions from single-point delivery (zero-dimensional point contact) to multi-point distributed delivery (two-dimensional surface coverage). The multiple openings are arranged in a specific pattern on the distal tip, allowing adhesive to be delivered across a broader area simultaneously, thereby reducing the number of repositioning operations required.
2Reliability
If an injection needle is used for adhesive delivery, then the adhesive can be applied to secure the patch or mesh, but the injection needle occupies the working channel of the endoscope
Solution Approach 1:
The inner sleeve is nested within the outer sleeve, forming a telescoping assembly that can be collapsed for delivery through the endoscope working channel and then deployed at the treatment site. This nested configuration allows the delivery device to access the working channel while maintaining the ability to provide distributed adhesive delivery without permanently occupying the channel.
Solution Approach 2:
The telescoping mechanism enables dynamic transformation of the device from a compact delivery configuration to an expanded adhesive delivery configuration. The inner and outer sleeves can move relative to each other to transition between these states, allowing the device to adapt to different operational requirements.
3Area of stationary object
If the injection needle is repeatedly repositioned to deliver adhesive to multiple points, then sufficient coverage of the patch or mesh can be achieved, but the overall procedure time increases
Solution Approach 1:
The multiple openings are pre-configured in a specific pattern on the distal tip during device assembly. This preliminary arrangement of delivery points eliminates the need for repeated repositioning operations during the procedure, as the device can deliver adhesive to multiple locations simultaneously from a single position.
Data Source
AI summary
An assembly of a medical delivery device includes an inner sleeve including a flange at a proximal end. The flange includes one or more through holes. The assembly also includes an outer sleeve movably coupled to the inner sleeve. A distal tip of the outer sleeve includes a plurality of openings for delivering an adhesive to a treatment site. The assembly further includes a cavity formed between the inner sleeve and the outer sleeve and configured to hold the adhesive prior to the delivering. The assembly yet further includes one or more actuators connected to a proximal end of the outer sleeve and extended via the one or more through holes to a handle of the medical delivery device. Actuation of the one or more actuators moves one of the inner sleeve or the outer sleeve relative to the other to cause the delivering of the adhesive.