Flipping Tissue Anchor Through a Puncture Needle for Stable Implantation
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Solution Overview
Problem
Existing endoscopic procedures face challenges in smoothly implanting an anchoring body into target tissues like the gallbladder due to difficulties in determining the implantation position and resistance during the implantation process, which can lead to tissue damage and inefficient installation of fixators.
Innovation Solution
An anchoring device with a flexible traction line and a driving tube that allows the anchoring body to be implanted through a puncture needle, enabling the anchoring body to flip and form an angle with the traction line, ensuring stable implantation into the target tissue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the anchoring body is directly implanted into the target tissue without a driving tube, then the implantation process is simpler, but the anchoring body cannot smoothly enter the target tissue due to resistance and difficulty in determining implantation position
Solution Approach 1:
The puncture needle serves as an intermediary tool that first penetrates the target tissue to create a channel, allowing the anchoring body to be delivered through the needle's lumen. This mediator enables smooth implantation by pre-establishing a pathway, eliminating the need for the anchoring body to forcefully penetrate tissue directly.
Solution Approach 2:
The anchoring body is nested within the puncture needle during the implantation process. The needle's hollow structure contains the anchoring body, allowing it to be transported to the target location and then deployed through the needle's opening. This nesting arrangement facilitates smooth delivery while maintaining a relatively simple overall device structure.
2Productivity
If the anchoring body is pulled by the traction line to adhere the gallbladder to the intestine, then the fixator installation is achieved, but tissue damage may occur during the pulling process
Solution Approach 1:
The puncture needle performs a preliminary action by first creating a controlled channel through the tissue before the anchoring body is deployed. This pre-established pathway allows the anchoring body to be positioned accurately and pulled through with minimal resistance, reducing tissue damage while maintaining efficient fixator installation.
3Reliability
If the anchoring body extends out of the puncture needle without flipping, then the device structure is simpler, but the anchoring body cannot stop at the inner wall of the target tissue effectively
Solution Approach 1:
The anchoring body is designed to dynamically change its orientation from an initial parallel state to a flipped state with an angle relative to the traction line. This dynamic transformation allows the anchoring body to engage effectively with the inner wall of the target tissue, ensuring reliable implantation stability while using a relatively simple structural design.
Data Source
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AI summary
Provided are an anchor and an anchoring device, including: a traction line, which is a flexible member; an anchoring body connected to a distal end of the traction line; a driving tube, which is at least sleeved on at least a portion of the traction line. The anchoring body is configured to move along a puncture needle under the drive of the driving tube, and can be flipped when extending out of the distal end of the puncture needle to form an angle with the traction line, so that the anchoring body stops at the inner wall of the target tissue. The anchor and the anchoring device can smoothly implant the anchoring body of the anchor into the target tissue.