Methods and devices for medical device placement
Inventors
King, Ray • Gowda, Ashok • Houssiere, Charles
Assignees
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Publication Number
US-12239493-B2
Publication Date
2025-03-04
Expiration Date
Abstract
The invention relates to a method and device for maintaining a separately-determined trajectory and securing an electrode or other such placed object through a bone, such as a skull, while also covering the aperture. The device includes a base and an engaging-disengaging butterfly with inner sleeve for temporary engagement of the base and sliding screwdriver for engaging the base or butterfly inner sleeve, depending upon desired function. The base's lower portion engages via threads the bone, while maintaining previously determined trajectory; the upper portion engages the butterfly to continue to maintain previously determined trajectory electrode trajectory; a feature grasps a passing electrode in a given position; the electrode grasp from the butterfly can be then released, the base screwed in to final position, and the butterfly disengaged by unscrewing it from the base.
Core Innovation
The invention concerns a device for manipulating a medical device that includes a base, a sleeve, and an actuator arranged concentrically to guide and retain the medical device through a channel. The base has external threads, a first retaining feature, and a base channel spanning between proximal and distal ends. The sleeve has a sleeve channel coextensive with the base channel and includes a second retaining feature, with interfaces configured to couple to the base and to the actuator.
An actuator is translatable along a span section of the sleeve between a first position and a second position. In the first position, the actuator interfaces engage the base; in the second position, the actuator interfaces engage the second interface of the sleeve. This position-dependent engagement governs relative placement and control while the medical device is received through the base channel and the sleeve channel.
An inner screw in the base is configured to compress the first retaining feature when actuated by the first interface of the sleeve. This mechanical coupling allows the retaining feature associated with the base to be compressed via actuation through the sleeve, providing a structured retention interaction within the device architecture.
The disclosed device structure is further associated with placement and retention concepts for a medical device through skull apertures, including use of a threaded base fixable into a burr hole or twist drill hole, actuator-mediated trajectory maintenance, and an electrode grasping feature that is temporarily held and then released for permanent implantation. Imaging-compatible material considerations are also addressed, including MRI or X-ray/CT compatible materials.
Claims Coverage
The partial claim set contains one independent claim. The inventive features focus on the device architecture, channel coextensiveness for passing a medical device, position-dependent interface engagement of the actuator, and inner-screw compression of a retaining feature.
Base with threaded form and channel for receiving the medical device
The device includes a base with an approximately cylindrical form with proximal and distal ends, external threads, a first retaining feature and a base channel spanning from the proximal end to the distal end of the base, wherein the base channel is adapted to receive a medical device therethrough.
Sleeve with coextensive channel and retaining feature
The device includes a sleeve having proximal and distal ends, a span section, a first interface which couples to the base at the distal end of the sleeve, a second interface at the proximal end of the sleeve, a second retaining feature and a sleeve channel spanning from the proximal end to the distal end of the sleeve and being coextensive with the base channel.
Translatable actuator with position-dependent interface engagement along the sleeve
The device includes an actuator having proximal and distal ends, a span section shorter than the span section of the sleeve, a first interface adapted to couple to the base at the distal end of the actuator and a second interface at the proximal end of the actuator adapted to couple with the second interface of the sleeve, wherein the actuator is translatable along the span section of the sleeve between a first position and a second position and wherein the first position engaging the first interface of the actuator with the base and the second position engaging the second interface of the actuator with the second interface of the sleeve.
Inner screw compressing the first retaining feature via sleeve actuation
The device includes an inner screw in the base adapted to compress the first retaining feature when actuated by the first interface of the sleeve.
Across the independent claim, the main inventive contribution is the combination of a threaded base with a channel, a sleeve with a coextensive channel and retaining feature, and a translatable actuator that changes which interfaces are engaged between two positions while an inner screw compresses the base retaining feature when actuated through the sleeve.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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