Syringe with Side Port for Viscous Bone Cement Delivery
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Solution Overview
Problem
Current devices for delivering bone cement in vertebroplasty and kyphoplasty procedures are cumbersome, requiring multiple steps and risking leakage, which increases procedure time and surgical risks while diverting the physician's attention from imaging.
Innovation Solution
A hand- and mechanically-operated device with an elongate chamber, side port, and plunger that allows for efficient delivery of viscous bone cements, featuring a locking mechanism and ergonomic design to minimize steps and reduce leakage, with the plunger's angle facilitating easier material introduction and maintaining sterility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional multiple-step devices are used for bone cement delivery, then the delivery process is complex and time-consuming, but the procedure time is extended and surgical risks increase
Solution Approach 1:
The patent combines multiple functions (mixing, loading, and delivery of bone cement) into a single integrated device. The chamber receives both bone cement and carrier fluid, mixes them internally, and delivers the mixture through a single操作流程, eliminating the need for separate mixing and loading steps required by traditional devices.
Solution Approach 2:
The device performs multiple functions within a single system: the chamber serves as both mixing vessel and delivery syringe, the plunger provides both mixing action and delivery pressure, and the single lumen handles both material loading and final injection, making one device replace multiple traditional components.
2Reliability
If traditional delivery devices are used, then multiple steps are required, but leakage risk increases and physician attention is diverted from imaging
Solution Approach 1:
By combining mixing and delivery functions into one integrated chamber-plunger system, the patent eliminates multiple transfer steps between different components or devices. The bone cement is mixed and delivered through the same sealed chamber, removing leakage opportunities that occur during material transfer between separate mixing bowls, syringes, or connectors.
3Ease of manufacture
If viscous bone cement is delivered using traditional methods, then material introduction is difficult and sterility is compromised, but the delivery efficiency is reduced
Solution Approach 1:
The patent introduces a carrier fluid as an intermediary substance that mixes with the viscous bone cement within the sealed chamber. This carrier fluid reduces the viscosity of the bone cement, making it easier to introduce and deliver through the device while maintaining the sealed environment that preserves sterility throughout the process.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device streamlines the delivery process, reducing procedure time, minimizing surgical risks, and allowing the physician to focus on monitoring the cement flow, while maintaining sterility and ensuring efficient delivery of bone cements into the vertebral body.
Implementation Method 1
a plunger that is slidable within the lumen of the elongate chamber from a position proximal to conjunction of the lumens of the side port and elongate chamber to a position distal to the conjunction
Data Source
AI summary
A syringe configured to deliver viscous compositions is described, in which the syringe may include an elongate chamber having side port(s) extending therefrom. Various viscous compositions may be inserted through the side port(s) and into the elongate chamber, which may further house a plunger for ejecting the composition. One portion of the plunger may interact with a restricted opening on the chamber to inhibit removal of the plunger from the chamber; and another portion of the plunger may have a locking structure, which cooperates with a locking structure on the chamber to selectively fix the plunger with respect to the chamber. The plunger may also be fully slidable within the chamber when the locking structures of the plunger and the elongate chamber are not engaged. Related methods of using the aforementioned syringe, as well as kits including further instruments that interact with the syringe, are also disclosed.