Interested in licensing this patent?
MTEC can help explore whether this patent might be available for licensing for your application.
Publication Number
US-12446918-B2
Publication Date
2025-10-21
Expiration Date
Abstract
A pressure relief device for controlling the outflow of fluid from a surgical site. The pressure relief device includes a cannula body having a proximal end and a distal end with a thread extending along the entire cannula body from the distal end. The device also has a proximal end cap connected to the proximal end of the cannula body, a spacer connected between the cannula body and the proximal end cap, and a proximal seal enclosed between the proximal end cap and the spacer. One or more distal seals can be enclosed between the spacer and the proximal end of the cannula body. The device additionally includes a channel between the spacer and an inner wall of the proximal end cap. Fluid flows out of the device through the channel.
Core Innovation
The invention relates to a pressure relief device in the form of a pressure relief cannula for surgical fluid management. The cannula includes a cannula body with a threaded cannula body and a proximal end cap connected to the proximal end of the cannula body, and a chamber connected between the cannula body and the proximal end cap to manage fluid within the device.
The device incorporates a proximal seal enclosed between the proximal end cap and the chamber, and distal seals enclosed between the chamber and the proximal end of the cannula body. The distal seals include a first distal seal and a second distal seal stacked directly onto each other, and the chamber includes an outer surface portion around which forms a circumference, where the outer surface portion comprises a plurality of apertures integrally formed with and extending around the circumference.
In response to disturbance of a distal seal, leaked fluid enters the chamber. The device further includes a proximal splash-guard seal and apertures configured to provide controlled outflow, where fluid pathways are arranged to direct excess fluid away from a user. Geometry and alignment of fluid pathways within the proximal end cap/chamber, including an internal channel aligned with a central longitudinal axis and slot orientation relative to that axis, are described to help keep the chamber partially filled and to route excess fluid away.
Claims Coverage
The document provides two independent claims. Across them, the claims define a pressure relief device with a threaded cannula body, a proximal end cap, and a sealed chamber or spacer having a circumferential apertured region and stacked directly-on-each-other distal seals.
Apertured chamber outer surface with integrally formed apertures around circumference
A chamber connected between the cannula body and the proximal end cap, wherein an outer surface portion comprises a plurality of apertures integrally formed with and extending around the circumference of the most outer surface of the chamber.
Stacked directly onto each other distal seals enclosed between chamber and cannula body
A first distal seal and a second distal seal stacked directly onto each other, wherein the first and second distal seals are enclosed between the chamber and the proximal end of the cannula body.
Proximal seal enclosed between proximal end cap and chamber
A proximal seal enclosed between the proximal end cap and the chamber.
Apertured spacer with stacked distal seals
A spacer connected between the cannula body and the proximal end cap, having an outer surface forming a first portion of a most outer surface, wherein the first portion comprises a plurality of apertures integrally formed with and extending around the circumference of the most outer surface of the spacer.
Stacked directly onto each other distal seals enclosed between spacer and proximal end of cannula body
First and second distal seals stacked directly onto each other, enclosed between the spacer and the proximal end of the cannula body.
Proximal seal enclosed between proximal end cap and spacer
A proximal seal enclosed between the proximal end cap and the spacer.
Across both independent claims, the core claim coverage focuses on a pressure relief device having a threaded cannula body, a proximal end cap, and a sealed chamber or spacer structure with a circumferential apertured region and stacked directly-on-each-other distal seals.
Stated Advantages
Fluid pathways are arranged to direct excess fluid away from a user.
The device is described as helping keep the chamber partially filled.
Controlled outflow is provided by apertures.
Documented Applications
Surgical fluid management.
Interested in licensing this patent?