Cleaner Suction Stryker’s Filtered Manifold That Captures Surgical Waste Before It Reaches the Vacuum System

Global surgical technology leader Stryker has patented an improved manifold for medical waste collection systems – one that incorporates an integrated filter basket designed to trap solid, semi-solid and liquid waste within the fluid path before it can reach and damage the vacuum device. The invention addresses a persistent challenge in surgical suction management: protecting expensive vacuum equipment from the wide variety of waste materials encountered in clinical procedures.

The Problem

Surgical procedures generate significant volumes of fluid and tissue waste – blood, irrigant fluids, tissue fragments, bone chips, clots and other semi-solid material – that must be efficiently removed from the surgical field. Medical suction systems collect this waste through suction tubes connected to a vacuum source, typically a canister-based waste collection device. The manifold connecting the suction tubes to the collection device is a critical junction in this system.

The problem is that solid and semi-solid waste materials can pass through suction tubes and into the vacuum manifold, where they can clog the system, reduce suction performance or – in worst cases – reach and damage the vacuum device itself. Larger tissue fragments and bone particles are particularly problematic, as they can block the narrow passages within the manifold or get trapped in components that are difficult to clean.

Healthcare facilities rely on uninterrupted suction performance throughout surgical procedures – a blocked or malfunctioning suction system mid-procedure is a serious patient safety problem. Protecting the system while maintaining reliable suction flow requires a filtering solution that can capture problematic waste without restricting flow or creating maintenance difficulties.

What This Invention Does

Stryker’s invention describes a manifold with an integrated filter element housed within the manifold body. The filter element takes the form of a basket with a specific geometry: a distal section with a smaller cross-sectional area than a proximal section. This tapered basket design creates a narrowing flow path within the filter that helps trap solid and semi-solid waste materials.

The sidewalls of both the proximal and distal sections of the basket contain apertures – openings sized and positioned to allow fluid to pass through while trapping particles above a certain size. The basket sits within the fluid path through the manifold body, which connects a suction port assembly (where suction tubes connect) to a vacuum port (where the waste collection vacuum device connects).

Waste-laden fluid enters from the suction tubes, passes through the basket – with solid materials being caught while fluid flows through the sidewall apertures – and continues to the vacuum device with reduced solid content. The tapered basket geometry ensures captured waste accumulates in the distal section rather than building up at the inlet where it could block flow.

Key Features

Integrated filter basket. A basket-shaped filter element housed directly within the manifold body intercepts solid and semi-solid waste before it reaches the vacuum device, protecting the equipment without requiring a separate external filter component.

Tapered basket geometry. The distal section of the basket has a smaller cross-sectional area than the proximal section – a tapering design that helps channel and retain captured waste material toward the distal end rather than allowing it to accumulate at the inlet.

Sidewall apertures for fluid flow. Apertures in both sections of the basket sidewall allow fluid to pass through while trapping larger particles, maintaining suction flow performance while providing filtration.

Removable connection design. The vacuum port is configured to be removably coupled with the waste collection vacuum device, enabling easy disconnection for canister replacement and system maintenance.

Multi-tube suction port assembly. The suction port assembly is configured to couple with one or more suction tubes, providing flexibility for procedures requiring multiple simultaneous suction sites.

Who Is Behind It?

Stryker Corporation is one of the world’s largest medical device companies, with major product lines spanning surgical equipment, orthopaedic implants and neurotechnology. The inventors are William Gavlak, Richard Grambergs, Michael A. Fisher, Michael J. Glatzer and Roland Krevitt. This application is a divisional of AU 2024201462. The application is managed by Davies Collison Cave Pty Ltd in Melbourne.

Why It Matters

Surgical suction systems are fundamental infrastructure in every operating theatre, and their reliable performance directly affects surgical efficiency and patient safety. Equipment failures or performance degradation caused by waste contamination result in procedure delays, additional cleaning and maintenance costs, and potential equipment replacement expenses. A manifold design that actively filters waste before it reaches the vacuum device reduces all of these costs while maintaining the suction performance that surgeons depend on.

The design is also relevant to infection control – by containing solid waste within a disposable manifold basket rather than allowing it to migrate further into the suction system, the invention may reduce the contamination of components that are harder to clean and sterilise. With IPC classifications covering medical suction (A61M 1/00) and multiple filtration technologies (B01D 29/00, B01D 29/44, B01D 29/88, B01D 35/28, B01D 35/30), the patent spans both the clinical and engineering aspects of surgical waste management.

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AU 2026201546 was published in the Australian Official Journal of Patents on 19 March 2026 and is open for public inspection. Patent applications represent inventions that are sought to be protected and do not necessarily reflect commercially available products.

Related Concepts

Surgical suction is a critical operating theatre function, removing blood, irrigants and tissue debris to maintain a clear operative field. Medical suction systems typically consist of suction tubes, a collection manifold and a vacuum source, with the manifold serving as the junction point most vulnerable to blockage from solid waste.

Integrated filtration within the fluid path – rather than as a separate downstream component – keeps waste contained closer to the collection point, reducing both equipment contamination and infection control risks. Stryker is a global leader in surgical waste management systems, including the Neptune platform for fluid waste management in operating theatres.