IP Library › Granted Patent US 12,433,671
Granted Patent B2
US 12,433,671 · App. 18/606,053 · Granted Oct 7, 2025

Tumor ablation devices and related methods

Inventors: Craig Purdy (Sunnyvale, CA); Dan Balbierz (Redwood City, CA)
Assignee: DFine, Inc.
A61B18/1492A61B18/082A61B18/10A61B18/1477A61B18/149A61B2018/00339A61B2018/00565A61B2018/00577A61B2018/0066A61B2018/00708A61B2018/00791A61B2018/00797A61B2018/00821A61B2018/1465A61B18/148A61B18/28
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Quick Facts
Patent No.
US 12,433,671
App. No.
18/606,053
Granted
Oct 7, 2025
Kind
B2
Abstract

Spinal tumor ablation devices and related systems and methods are disclosed. Some spinal tumor ablation devices include electrodes that are fixedly offset from one another. Some spinal tumor ablation devices include a thermal energy delivery probe that has at least one temperature sensor coupled thereto. The position of the at least one temperature sensor relative to other components of the spinal tumor ablation device may be controlled by adjusting the position of the thermal energy delivery probe in some spinal tumor ablation devices. Some spinal tumor ablation devices are configured to facilitate the delivery of a cement through a utility channel of the device.

Claims (19)

1. A medical device for spinal tumor ablation, the medical device comprising:

a first tubular conductor;

a tubular insulator extending through the first tubular conductor, wherein the tubular insulator comprises an exposed portion at a distal end of the tubular insulator, wherein the exposed portion of the tubular insulator is distal of the first tubular conductor,

a second tubular conductor extending through the tubular insulator such that a distal portion of the second tubular conductor is disposed distal of the insulator, wherein the second tubular conductor forms a utility channel that extends from a proximal opening of the second tubular conductor to a distal opening at a distal end of the second tubular conductor; and

a port disposed proximal of the second tubular conductor, wherein the port is configured to provide access to a proximal opening of the utility channel;

wherein a portion of the utility channel is used for at least one of obtaining a biopsy sample, positioning temperature sensors, or delivering cement to a vertebra of a patient.

2. The medical device of claim 1 , wherein the medical device is configured such that, when the medical device is activated for ablation within a vertebra of a patient, an electrical current flows between the distal portion of the second tubular conductor and the first tubular conductor via tissue within the vertebra of the patient.

3. The medical device of claim 1 , further comprising an articulating distal portion that is configured to transition from a linear configuration to a non-linear configuration.

4. The medical device of claim 1 , further comprising a thermal energy delivery probe that is configured to be at least partially disposed within the utility channel when the thermal energy delivery probe is fully inserted into the port.

5. The medical device of claim 4 , wherein the thermal energy delivery probe is configured to contact one or more electrical contacts of the medical device, thereby creating a circuit for the delivery of thermal energy to tissue of a patient.

6. The medical device of claim 4 , wherein:

the thermal energy delivery probe further comprises a stylet; and one or more temperature sensors are attached to the stylet.

7. The medical device of claim 6 , wherein the port includes indicia for determining a position of the one or more temperature sensors within the utility channel.

8. The medical device of claim 6 , wherein the thermal energy delivery probe is selectively coupleable to the port.

9. The medical device of claim 6 , wherein the thermal energy delivery probe comprises threads that are configured to engage with threads on the port, wherein rotation of the thermal energy delivery probe relative to the port causes thread-based displacement of the thermal energy delivery probe relative to the second tubular conductor.

10. The medical device of claim 1 , further comprising an elongate cutting instrument for obtaining a biopsy sample, wherein the elongate cutting instrument, when fully inserted into the port, extends through the distal opening at a distal end of the utility channel.

11. The medical device of claim 1 , further comprising a cement delivery cartridge, wherein the cement delivery cartridge is configured to facilitate

delivery of a cement through the utility channel and out of the distal opening at the distal end of the second tubular conductor.

12. The medical device of claim 1 , further comprising a thermal energy delivery probe and a cement delivery cartridge, wherein the medical device is configured to permit sequential insertion of a thermal energy delivery probe into the port, removal of the thermal energy delivery probe from the port, and then insertion of the cement delivery cartridge across the port.

Assignments (2)
SECURITY INTEREST Recorded Jan 30, 2025
From: DFINE, INC.
To: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS ADMINISTRATIVE AGENT
Reel/Frame 070060/0987 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 18, 2024
From: PURDY, CRAIG; BALBIERZ, DAN
To: DFINE, INC.
Reel/Frame 066806/0685 →
Continuity (5)
Continuation 17473864 · Sep 13, 2021
Continuation 15822944 · Nov 27, 2017
Provisional Application 62426825 · Nov 28, 2016
Provisional Application 62426816 · Nov 28, 2016
Related Publication 20240366296A1 · Nov 7, 2024
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