High voltage connectors for pulse generators

• US 10,543,357 B2
• Filed: 09/19/2016
• Issued: 01/28/2020
• Est. Priority Date: 09/19/2016
• Status: Active Grant

• Current Assignee: Pulse Biosciences, Inc
• Original Assignee: Pulse Biosciences, Inc
• Inventors: Kreis, Mark P., Danitz, David J., Hinman, Cameron Dale, Finson, Sean Nicholas
• Primary Examiner(s): Evanisko, George R
• Application Number:
  US15/269,273
• Publication Number:
  US 20180078755A1
• Time in Patent Office: 1,226 Days
• CPC Class Codes: A61B 18/1477 Needle-like probes
• CPC Class Codes: A61B 2018/00178 Electrical connectors
• CPC Class Codes: A61B 2018/1495 Electrodes being detachable from a support structure
• CPC Class Codes: A61N 1/0472 Structure-related aspects
• CPC Class Codes: A61N 1/0502 Skin piercing electrodes
• CPC Class Codes: A61N 1/32 alternating or intermittent currents applying electric fields by inductive or capacitive coupling A61N1/40; microwave apparatus A61N5/02
• CPC Class Codes: A61N 1/36 for stimulation
• CPC Class Codes: A61N 1/36017 with leads or electrodes penetrating the skin

Abstract

An electrode connectable to a pulse generator is disclosed. The electrode includes therapeutic terminals configured to deliver the pulse to a patient, first and second electrical pulse inlet holes, and a first pulse input terminal. The first pulse input terminal is in the first electrical pulse inlet hole and is spaced apart from an entrance to the first electrical pulse inlet hole by more than about 2.5 cm. Also, first pulse input terminal is connected with one or more of the therapeutic terminals. The electrode also includes a second pulse input terminal, where the second pulse input terminal is in the second electrical pulse inlet hole and is spaced apart from an entrance to the second electrical pulse inlet hole by a distance greater than about 2.5 cm. Also, the second pulse input terminal is electrically connected with one or more of the therapeutic terminals.

Claims

1. An electrode electrically connectable to a pulse generator, wherein the electrode is configured to deliver a pulse generated by the pulse generator to a patient, and wherein the electrode comprises:

a handle comprising;

a handle skirt comprising a first hole and a second hole, and

a first connection terminal within the first hole and a second connection terminal within the second hole of the handle skirt, the first and second connection terminals each comprising an uninsulated portion, the uninsulated portion of the first connection terminal coupled to a first insulated conductor and the uninsulated portion of the second connection terminal coupled to a second insulated conductor; and

a tip, connected to the handle, wherein the tip includes a tip base having first and second insulative wiring channels, the tip further comprises;

a plurality of therapeutic terminals,

first and second connectors configured to electrically connect with the first and second connection terminals of the handle while the tip is connected to the handle, wherein;

the first and second connectors are configured to electrically couple to the plurality of therapeutic terminals,

each of the first and second connectors are electrically conductive,

the first connector is received within the first insulative wiring channel of the tip base of the tip, and

the second connector is received within the second insulative wiring channel of the tip base, and

a tip skirt hole configured to receive the handle skirt while the tip is connected to the handle such that the first connector and at least a portion of the first insulative wiring channel are received into the first hole of the handle skirt, and the second connector and at least a portion of the second insulative wiring channel are received into the second hole of the handle skirt,

wherein the handle skirt and the first and second holes of the handle skirt are configured and sized to cause a distance between the uninsulated portions of the first and second connection terminals along every and any path on any surface or combination of surfaces to be greater than a minimum distance to prevent or minimize current leakage while the tip is connected to the handle.

2. The electrode of claim 1, wherein the tip is removably connected to the handle.

3. The electrode of claim 2, further comprising:

a latch comprising a latch hook and a latch notch, the latch removably connecting the handle to the tip.

4. The electrode of claim 1, wherein the tip further comprises a guard configured to maintain a user'"'"'s hand a minimum user distance away from the therapeutic terminals.

5. The electrode of claim 1, further comprising:

a cable having the first insulated conductor and the second insulated conductor extending therefrom, wherein the cable is electrically connected with the first connection terminal by the first insulated conductor and the cable is electrically connected with the second connection terminal by the second insulated conductor, and wherein the cable is connectable to the pulse generator.

6. The electrode of claim 5, wherein a first portion of the second insulated conductor is routed from the cable away from the second connection terminal and a second portion of the second insulated conductor is routed from the first portion toward the second connection terminal such that the handle is configured to be shorter than the minimum distance.

7. The electrode of claim 5, wherein the handle further comprises first and second bosses, wherein the first insulated conductor extends from the cable to the first connection terminal through the first boss, wherein the second insulated conductor extends from the cable to the second connection terminal through the second boss, wherein the first boss includes a first slot extending along a side of the first boss, and wherein the second boss includes a second slot extending along a side of the second boss.

8. The electrode of claim 1, further comprising a resistor electrically connected to the first and second connection terminals.

9. The electrode of claim 8, wherein the resistor has a value corresponding with an attribute of the electrode.

10. The electrode of claim 1, further comprising a resistor electrically connected to one of the first and second connection terminals, wherein the electrode is configured to conduct current to or from one of the therapeutic terminals through the resistor.

11. The electrode of claim 1, further comprising a plurality of fiducials radially aligned with a geometric center of the therapeutic terminals.

12. The electrode of claim 1, wherein the minimum distance is 2.5 cm or greater.

13. The electrode of claim 1, wherein a voltage is adapted to be applied between the connection terminals between about 5 kV and 30 kV and the minimum distance is based at least in part on an expected voltage between the connection terminals.

24. The electrode of claim 1, wherein the first insulated conductor is circuitously routed from the uninsulated portion of the first connection terminal to the uninsulated portion of the second connection terminal such that a length of the handle is less than the minimum distance.

14. An electrode configured to deliver high voltage sub-microsecond pulses, the electrode comprising:

a handle comprising;

a handle skirt comprising a first hole and a second hole;

a first connection terminal accessible through the first hole; and

a second connection terminal accessible through the second hole;

a tip configured to couple to the handle, the tip including a tip base having first and second insulative wiring channels, the tip further comprising;

a tip skirt hole configured to receive the handle skirt;

a first connector electrically conductive and comprising an uninsulated portion, the first connector received within the first insulative wiring channel of the tip base of the tip, and wherein the first connector and at least a portion of the first insulative wiring channel are received by the first hole of the handle skirt and electrically connectable to the first connection terminal; and

a second connector electrically conductive and comprising an uninsulated portion, the second connector is received within the second insulative wiring channel of the tip base, and wherein the second connector and at least a portion of the second insulative wiring channel are received by the second hole of the handle skirt and electrically connectable to the second connection terminal; and

a plurality of therapeutic terminals configured to electrically couple to the first connector and second connector of the tip, the plurality of therapeutic terminals configured to deliver the high voltage sub-microsecond pulses to a patient,

wherein the handle skirt and the tip are configured and sized to cause a distance between the uninsulated portions of the first and second connectors along every and any path on any surface or combination of surfaces to be greater than a minimum distance to prevent or minimize current leakage.

15. The electrode of claim 14, wherein the first connector and the second connector are physically connected to the first connection terminal and the second connection terminal, respectively.

16. The electrode of claim 14, wherein the tip is removably coupled to the handle.

17. The electrode of claim 14, further comprising:

a latch, wherein the tip is locked to the handle by the latch.

18. The electrode of claim 14, wherein the tip further comprises a guard at a user minimum distance from the therapeutic terminals, the user minimum distance greater than a threshold value.

19. The electrode of claim 14, wherein the handle further comprises a resistor electrically connected to the first connection terminal and the second connection terminal.

20. The electrode of claim 14, wherein the tip further comprises a plurality of fiducials radially aligned with a geometric center of the therapeutic terminals.

21. The electrode of claim 14, wherein a distance between the first and second connection terminals along any path on any surface or combination of surfaces is greater than the minimum distance.

22. The electrode of claim 14, wherein the minimum distance is at least 2.5 cm.

23. The electrode of claim 14, wherein the electrode is configured to deliver the high voltage sub-microsecond pulse having voltage of five thousand (5000) volts or greater.

25. The electrode of claim 14, wherein a voltage is adapted to be applied between the connectors between about 5 kV and 30 kV and the minimum distance is based at least in part on an expected voltage between the connectors.