Repeating Organ Fixing Tool with Segmented Needle
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Solution Overview
Problem
The existing organ fixing instruments for gastrostomy are invasive due to thick puncture needles and prone to suture entanglement, leading to complex operations and high costs, especially in the repeating type with multiple suture instruments.
Innovation Solution
A repeating type organ fixing instrument with a puncture needle that houses multiple rod-shaped engaging portions, where each suture is either inserted into or extruded from the needle to prevent entanglement, reducing the needle's outer diameter and simplifying the operation by using a penetrating portion with a slit or transverse hole for suture passage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple suture instruments are housed in the puncture needle (repeating type), then the number of puncture needles is reduced and operation is simplified, but the puncture needle outer diameter increases and sutures entangle
Solution Approach 1:
The puncture needle is divided into multiple independent chambers, each housing a separate suture instrument. This segmentation prevents sutures from entangling with each other while maintaining the repeating type advantage of using a single puncture needle for multiple fixation points.
Solution Approach 2:
Multiple suture instruments are nested within the puncture needle structure, with each suture instrument contained in its own chamber. This nesting arrangement allows multiple functions to be integrated into a single instrument while preventing interference between components.
2Ease of operation
If multiple suture instruments are housed in the puncture needle, then instrument replacement is unnecessary, but the puncture needle outer diameter increases making it more invasive
Solution Approach 1:
Multiple suture instruments that would normally require separate application are merged into a single puncture needle assembly. This combining allows all sutures to be applied in one procedure without instrument replacement, while the integrated design optimizes the overall diameter to minimize invasiveness.
Solution Approach 2:
The puncture needle is designed as a universal instrument capable of performing multiple functions - delivering multiple suture instruments simultaneously. This multi-functionality eliminates the need for instrument replacement while the design optimizes the needle dimensions to reduce invasiveness.
3Device complexity
If all sutures are inserted into the interior of the puncture needle, then the structure is simplified, but suture entanglement increases and reliability decreases
Solution Approach 1:
The internal structure of the puncture needle is segmented into separate chambers for each suture instrument. This segmentation maintains structural simplicity while preventing suture entanglement by providing dedicated spaces for each suture, thereby improving reliability.
Solution Approach 2:
Partition walls or separators act as intermediary structures between adjacent suture instruments within the puncture needle. These intermediaries prevent direct contact between sutures, eliminating entanglement risk while maintaining a relatively simple overall structure.
Data Source
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AI summary
An organ fixing instrument according to the present invention is the repeating type and comprises: a plurality of suturing tools comprising a rod-shaped engaging portion and a suture connected to the engaging portion; and a puncture needle housing a plurality of engaging portions; wherein a plurality of the engaging portions are pushed out from the puncture needle one by one by the operation of an operation unit main body. The suturing tools are that at least one of the sutures connected to the engaging portion among a plurality of engaging portions is inserted into the interior of the puncture needle, and the other sutures are led out from the interior of the puncture needle to the exterior. A repeating type organ fixing instrument according to the present invention comprises: a plurality of suturing tools comprising a rod-shaped engaging portion and a suture, one end of which is connected to the engaging portion; and a puncture needle housing a plurality of the engaging portions side by side in the tip base end direction; wherein a plurality of the engaging portions are pushed out from the puncture needle one by one by the operation of an operation unit main body, and the string passages for inserting the sutures of the suturing tools housed at the tip end side into the interior of the puncture needle are formed at the engaging portions of the suturing tools housed in the base end side.