Interchangeable Inserts for Composite Suture Molds
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Solution Overview
Problem
The production of various suture packages requires unique injection molding dies, which are expensive and time-consuming to produce, due to the differences in suture/needle composition, gauge, shape, length, and curvature, necessitating specific tooling for each type.
Innovation Solution
A composite mold with a common portion for forming constant features and interchangeable variable portions to produce different types of suture packages, allowing for efficient and economic production by retaining common mold parts and changing only the unique portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If unique injection molding dies are prepared for each suture type, then manufacturing precision and reliability are improved, but device complexity and production cost increase
Solution Approach 1:
The patent applies universality by designing a single injection molding die that can produce multiple different suture package types. The die includes a reusable base structure and interchangeable inserts that can be swapped to accommodate different suture types, gauges, and configurations. This allows one master die to perform the function of multiple specialized dies, reducing device complexity while maintaining manufacturing precision through the use of precision-engineered interchangeable components.
Solution Approach 2:
The injection molding die is segmented into distinct modular components: a permanent base die structure and removable interchangeable inserts. Each insert is designed for a specific suture type or package configuration. This segmentation allows the complex die to be broken into manageable parts that can be independently manufactured, stored, and swapped, thereby reducing the overall complexity of managing multiple complete dies while maintaining the ability to produce various suture packages with high precision.
2Adaptability or versatility
If unique injection molding dies are prepared for each suture type, then product adaptability is improved, but production time and cost increase
Solution Approach 1:
The patent applies preliminary action by pre-manufacturing and storing multiple interchangeable inserts that are ready for quick swap-in. Each insert is pre-configured for a specific suture type or package variation. When production needs to switch between different suture types, the appropriate pre-prepared insert is simply swapped into the master die, eliminating the need for time-consuming die reconfiguration or new die fabrication. This maintains high product adaptability while significantly reducing the time loss associated with mold changes.
Solution Approach 2:
The universal master die with interchangeable inserts allows a single die to produce multiple suture package types, maintaining adaptability while reducing the total number of dies needed. The interchangeable inserts are designed with standardized mounting interfaces that allow quick swapping, enabling rapid transition between different product configurations without requiring extensive retooling time.
3Manufacturing precision
If unique injection molding dies are prepared for each suture type, then manufacturing precision is improved, but energy and material consumption increase
Solution Approach 1:
The universal master die structure is designed to be reused across multiple suture package types, eliminating the need to manufacture multiple complete dies from expensive mold materials. Only the interchangeable inserts need to be manufactured with high precision, while the majority of the die structure (the base) is shared across all product types. This significantly reduces material consumption while maintaining manufacturing precision through the use of precision-engineered inserts that fit into the standardized base structure.
Solution Approach 2:
By segmenting the die into a reusable base and disposable/interchangeable inserts, the patent reduces the total amount of expensive mold material required. Instead of creating multiple complete dies, only the variable portions (inserts) are manufactured as separate precision components. This segmentation strategy maintains manufacturing precision for each suture type while minimizing overall material consumption and associated energy costs.
Data Source
AI summary
Apparatus and method for making a plurality of different types of suture packages employ a mold with first and second opposing mold parts partially defining a mold cavity, at least one of the opposing mold parts has an opening therein communicating with the mold cavity. An insert is removeably inserted into the opening, to complete the mold cavity in a form suitable for molding a first type of suture package. An alternative insert is interchangeable with the first insert for completing the mold cavity in a form suitable for molding a second type of suture package. To make different suture packages, the mold is initially configured and used with one of the inserts to thereby make one type of suture package. The first insert is then replaced with the second, changing the mold cavity to form another type of suture package.


