Device to fill a bone void whilst minimising pressurisation
Inventors
COLCLOUGH, John Warren • Laycock, Phillip Anthony • Cooper, John Joseph • Waters, Russell David
Assignees
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Publication Number
US-10588748-B2
Publication Date
2020-03-17
Expiration Date
Abstract
Disclosed is a device for implantation into a bone void while minimising the potential for an increase in pressure within the bone void.
Core Innovation
The invention relates to an implantable device for insertion into a bone void. The implantable device comprises a bone substitute material and has a cylindrical body with one or more longitudinal channels extending the entire length of the device. The one or more longitudinal channels allow for depressurisation of the bone void during implantation of the device, with each channel intersecting a surface of the device and extending to an axial centerline of the device.
Each longitudinal channel is tapered such that the width of the one or more longitudinal channels opening on an outer, circumferential edge of the implantable device is greater than its width at a base thereof. The device further has a flat surface on an opposing longitudinal side to the one or more longitudinal channels. The device ends are convex, domed or semispherical shaped ends, forming the overall geometry of the insert.
The device is described as being shaped to provide a continuous venting/escape path during insertion/advancement, enabling displaced void contents to exit through the longitudinal channels. An arrangement of two or more implantable devices lined up end to end is also disclosed, with each device using the same tapered longitudinal channel depressurisation approach.
Claims Coverage
Two independent claim scopes are provided, covering (i) a single implantable device with tapered full-length longitudinal channels that depressurise a bone void, and (ii) an end-to-end arrangement of two or more such devices with specified end geometry and channel taper features.
Implantable device for depressurisation via tapered full-length longitudinal channels
An implantable device for insertion into a bone void, comprising a bone substitute material and having a cylindrical body and one or more longitudinal channels extending the entire length of the device, where said one or more longitudinal channels allows for depressurisation of the bone void during implantation; the one or more longitudinal channels each intersecting a surface of the device and extending to an axial centerline thereof, and being tapered such that the width of the one or more longitudinal channels opening on an outer, circumferential edge of the implantable device is greater than its width at a base thereof; and wherein the devices have a flat surface on an opposing longitudinal side to the one or more longitudinal channels; and wherein the device has convex, domed or semispherical shaped ends.
End-to-end arrangement of implantable devices with depressurising tapered longitudinal channels
An arrangement of two or more implantable devices comprising a plurality of the devices lined up end to end, wherein each of the implantable devices comprises a bone substitute material and has a cylindrical body and one or more longitudinal channels extending the entire length of the device, where said one or more longitudinal channels allows for depressurisation of the bone void during implantation of each device; the one or more longitudinal channels each intersecting a surface of each device and extending to an axial centerline thereof, and being tapered such that the width of the one or more longitudinal channels opening on an outer, circumferential edge of each implantable device is greater than its width at a base thereof; and wherein the devices have a flat surface on an opposing longitudinal side to the one or more longitudinal channels; and wherein each device has convex, domed or semispherical shaped ends.
Across both independent claims, coverage is centered on implantable bone-substitute devices having a cylindrical body and one or more longitudinal channels that extend the entire length and taper to produce a wider opening at the outer circumferential edge than at the base, while enabling depressurisation of the bone void during implantation. The claims further require a flat opposing longitudinal surface and convex, domed or semispherical shaped ends, with the second independent claim extending the concept to an end-to-end arrangement of multiple devices.
Stated Advantages
Minimizes pressure-related risks during implantation by allowing depressurisation of the bone void, including risks associated with embolization such as fat embolism syndrome.
Documented Applications
Insertion of the implantable device into a bone void, including insertion into a void within an intramedullary canal.
Insertion of an arrangement of two or more implantable devices lined up end to end into a patient’s intramedullary canal.
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