USRE44049E1 - Bipolar handheld nerve locator and evaluator - Google Patents

Bipolar handheld nerve locator and evaluator Download PDF

Info

Publication number
USRE44049E1
USRE44049E1 US10/702,056 US70205603A USRE44049E US RE44049 E1 USRE44049 E1 US RE44049E1 US 70205603 A US70205603 A US 70205603A US RE44049 E USRE44049 E US RE44049E
Authority
US
United States
Prior art keywords
nerve
electrical lead
cannula
device
compressed gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
US10/702,056
Inventor
Garrett D. Herzon
Original Assignee
Garrett D. Herzon
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to US09/544,384 priority Critical patent/US6312392B1/en
Application filed by Garrett D. Herzon filed Critical Garrett D. Herzon
Priority to US10/702,056 priority patent/USRE44049E1/en
Application granted granted Critical
Publication of USRE44049E1 publication Critical patent/USRE44049E1/en
Application status is Active legal-status Critical
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/48Other medical applications
    • A61B5/4887Locating particular structures in or on the body
    • A61B5/4893Nerves
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/05Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radiowaves
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/40Detecting, measuring or recording for evaluating the nervous system
    • A61B5/4029Detecting, measuring or recording for evaluating the nervous system for evaluating the peripheral nervous systems
    • A61B5/4041Evaluating nerves condition

Abstract

A hand-held disposable combination surgical nerve evaluator and locator is provided. The device includes a housing that serves as a handpiece and that accommodates a printed circuit board, a DC voltage source and a compressed gas source. Two pre-programmed settings are provided by way of a nerve evaluation switch and a nerve location switch. By choosing a nerve evaluation switch, a pulsed current is sent down one electrical lead that extends outward from the housing. A return electrical lead is provided that also extends outward from the housing in a parallel, but spaced-apart relationship from the other electrical lead. Compressed gas is delivered to the distal ends of the first and second electrical leads by a cannula that is connected to the compressed gas source. It will also be noted that the return or the second electrical lead can also serve as a cannula for the delivery of compressed gas. A fiber optic light guide may also be provided to illuminate the area around the distal ends of the two electrical leads. In a nerve evaluation mode, when the nerve evaluation switch has been activated, a pulsed current is delivered to the first electrical lead. Similarly, in a nerve location mode, a pulsed current is also delivered to the first electrical lead. However, the frequency of the pulsed current in the nerve evaluation mode is less than the frequency of the current in the nerve location mode, the pulse duration in the nerve evaluation mode is less than the pulse duration in the nerve location mode and the amplitude of the current in the nerve evaluation mode is less than the amplitude of the current in the nerve location mode.

Description

FIELD OF THE INVENTION

The present invention relates generally to nerve locators and evaluators. More specifically, the present invention relates to a bipolar nerve locator and evaluator. Still more specifically, the present invention relates to a bipolar nerve locator and evaluator that includes a pressurized gas source for removing blood and fluid from the operative field as well as between the electrical leads and further which includes a fiber optic light source.

BACKGROUND OF THE INVENTION

U.S. Pat. No. 4,962,766 discloses a nerve locator and evaluator which is used in surgical procedures. An AC energizing current is transmitted through an electrical lead to the patient. High and low settings are available and the device is equipped with an auditory signal to alert the surgeon when current is flowing through the patient's body.

However, despite the progress provided by the device disclosed in U.S. Pat. No. 4,962,766, the device has been found to be unsatisfactory for a number of reasons. First, the device is mono-polar and is equipped with a single electrode at the evaluation tip. As a result, the device requires a secondary ground wire that exits the back end of the handpiece. The ground wire attaches the patient's body with a conductive patch or needle electrode. This arrangement is problematic because the needle can fall out or the patch can peel off during the procedure. Further, the ground wire can extend across the surgical area and become entangled with other instruments during the surgical procedure. Consequently, the ground wire can become dislodged and the device temporarily inoperable during surgery. As a result, there is a need for an improved nerve locator and evaluator which does not require the employment of a ground wire or lead.

Still further, the tip of the device disclosed in U.S. Pat. No. 4,962,766 is applied directly to the patient. Because it is employed during a surgical procedure, excessive amounts of blood and fluid are typically present. The blood and fluid makes it difficult for the surgeon to see the exact area where the distal tip of the device is being applied. Consequently, it can be difficult for the surgeon to make visual contact with the nerve that is being located or stimulated because of the presence of the blood and fluid. In addition to enhancing the surgeon's visualization of the nerve under investigation, removal of blood and fluid would also be important to electrically isolate the nerve prior to location or evaluation and further to prevent any electrical shunting of current applied to the nerve. As a result, there is a need for an improved nerve locator and evaluator which has a built-in mechanism for removing excess blood and fluid from an area under observation or investigation.

Similarly, the device disclosed in U.S. Pat. No. 4,962,766 is not equipped with any sort of a light source to assist the surgeon in viewing the distal end of the instrument tip. As a result, there is a need for an improved nerve locator and evaluator that is equipped with a built-in illumination means.

Finally, while the device disclosed in U.S. Pat. No. 4,962,766 has high and low current settings, the device does not incorporate preset evaluation parameters which allow for locating and evaluation. As a result, there is a need for an improved nerve locator and evaluator with predetermined settings for frequency, evaluation pulse duration and amplitude for the separate operations of nerve evaluation and nerve location.

SUMMARY OF THE INVENTION

The present invention satisfies the aforenoted needs by providing a hand-held combination surgical nerve evaluator and locator that does not require a separate ground lead or connector. The device of the present invention is a bipolar device and utilizes two electrical leads in the probe, one of which serves as a return or a ground lead. In an embodiment, the hand-held combination surgical nerve evaluator and locator of the present invention also includes a pressurized gas source for clearing blood and fluids away from the area between the distal tips of the two electrical leads as well as the operative field. In an embodiment, the surgical nerve evaluator and locator of the present invention also includes a built-in light source in the form of a fiber optic light guide. Still further, in an embodiment, the surgical nerve evaluator and locator of the present invention also includes two predetermined settings, one for nerve location and one for nerve evaluation.

In an embodiment, the present invention provides a hand-held combination surgical nerve evaluator and locator that comprises a handpiece that comprises a housing that accommodates a circuit board connected to a DC voltage source. The circuit board also comprises a pulsed current source. The pulsed current source is connected to a first electrical lead. The housing is also connected to a second electrical lead. The first and second electrical leads extend outward from one end of the housing in a parallel and spaced-apart fashion.

The circuit board and pulsed current source are connected to a nerve evaluation switch and a nerve location switch. Movement of the nerve evaluation switch to an activation position causes a first pulsed current to be generated by the pulsed current source and transmitted to the first electrical lead. The first pulsed current has a nerve evaluation frequency, a nerve evaluation pulse duration and a nerve evaluation amplitude.

In contrast, movement of the nerve location switch to an activation position causes a second pulsed current to be generated by the pulsed current source and transmitted to the first electrical lead. The second pulsed current has a nerve location frequency, a nerve location pulse duration and a nerve location amplitude.

The nerve evaluation frequency is less than the nerve location frequency. The nerve evaluation pulse duration is less than the nerve location pulse duration. The nerve evaluation amplitude is less than the nerve location amplitude.

In accordance with the present invention, the second electrical lead serves as a return electrical lead or a ground.

In an embodiment, the nerve location frequency ranges from about 5 to about 9 Hz.

In an embodiment, the nerve pulse duration ranges from about 300 to about 700 μsec.

In an embodiment, the nerve location amplitude ranges from about 700 to about 1100 ma.

In an embodiment, the nerve evaluation frequency ranges from about 1 to about 3 Hz.

In an embodiment, the nerve evaluation pulse duration ranges from about 150 to less than 300 μsec.

In an embodiment, the nerve evaluation amplitude ranges from about 150 to about 250 ma.

In an embodiment, the nerve location frequency is about 7 Hz; the nerve location pulse duration is about 500 μsec; the nerve location amplitude is about 900 ma; the nerve evaluation frequency is about 2 Hz; the nerve evaluation pulse duration is about 250 μsec; and the nerve evaluation amplitude is about 200 ma.

In an embodiment, the device of the present invention further comprises a compressed gas source located within the housing and that is connected to the circuit board. The device further comprises a cannula connected to the compressed gas source. The cannula, the first electrical lead and the second electrical lead all comprise distal ends. The cannula extends outward from the end of the housing and between the first and second electrical leads. Movement of either the nerve location switch or the nerve evaluation switch to an activated position causes the compressed gas source to communicate pressurized gas through the cannula and between the distal ends of the first and second electrical leads.

In an embodiment, the compressed gas source is a pump.

In an embodiment, the pump is selected from the group consisting of a solenoid pump, a diaphragm pump, a rotary pump and a vane pump.

In an embodiment, the compressed gas source is a canister of compressed or liquid carbon dioxide.

In an embodiment, the compressed gas source is a canister of compressed or liquid air.

In an embodiment, the compressed gas source is a canister of compressed or liquid nitrogen.

In an embodiment, the compressed gas source is a canister of compressed or liquid helium.

In an embodiment, the compressed gas source is a canister of compressed gas regulated by a switch.

In an embodiment, the second electrical lead is a cannula and the first electrical lead extends outward from the housing and through the second electrical lead.

In an embodiment, a distal end of the cannula includes at least one vent.

In an embodiment, the device of the present invention further comprises a fiber optic light guide that is connected to the DC voltage source. The fiber optic light guide extends outward from the housing and along the first and second electrical leads to illuminate the area surrounding the distal ends of the first and second electrical leads.

In an embodiment, the DC voltage source is a battery.

In an embodiment, the present invention includes a method of locating-a-nerve in a patient that comprises the steps of providing a hand-held combination surgical nerve evaluator and locator as set forth above, engaging a patient with the distal ends of the cannula and the first and second electrical leads, moving the nerve location switch to an activation position causing the compressed gas source to communicate pressurized gas through the cannula and between the distal ends of the first and second electrical leads thereby removing excess blood disposed between the first and second electrical leads and further causing a pulsed current to be generated by the pulsed current source and transmitted to the first electrical lead, through the patient's body to the second electrical lead.

In an embodiment, the present invention provides a method of evaluating a nerve in a patient that comprises the steps of providing a hand-held combination surgical nerve evaluator and locator as described above, engaging a patient with the distal ends of the cannula and the first and second electrical leads, moving the nerve evaluation switch to an activation position causing the compressed gas to communicate pressurized gas through the cannula and between the distal ends of the first and second electrical leads to thereby remove excess blood disposed between the first and second electrical leads and further causing a pulsed current to be generated by the pulsed current source and transmitted to the first electrical lead, through the patient and to the second electrical lead.

Other objects and advantages of the present invention will become apparent upon reading the following detailed description and appended claims, and upon reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

For a more complete understanding of the present invention, reference should now be made to the embodiments illustrated in greater detail in the accompanying drawings and described below by way of examples of the present invention.

In the drawings:

FIG. 1 is a side plan view of a hand-held combination surgical nerve evaluator and locator made in accordance with the present invention;

FIG. 2 is a sectional view of the nerve evaluator and locator shown in FIG. 1;

FIG. 3 is an end view of the probe section of the nerve evaluator and locator shown in FIG. 1;

FIG. 4 is a bottom view of the probe section shown in FIG. 3;

FIG. 5 is an end view of a probe section of an alternative embodiment made in accordance with the present invention;

FIG. 6 is a sectional view of the probe section shown in FIG. 5;

FIG. 7 is a side plan view of a probe section of an alternative embodiment made in accordance with the present invention illustrating the use of a fiber optic light guide;

FIG. 8 is an end view of the probe section shown in FIG. 7; and

FIG. 9 is a bottom view of the probe section shown in FIG. 8.

It should be understood that the drawings are not necessarily to scale and that the embodiments are sometimes illustrated by graphic symbols, phantom lines, diagrammatic representations and fragmentary views. In certain instances, details which are not necessary for an understanding of the invention or which render other details difficult to perceive may have been omitted. It should be understood, of course, that the invention is not necessarily limited to the particular embodiments illustrated herein.

DETAILED DESCRIPTION OF THE PRESENTLY PREFERRED EMBODIMENTS

Turning first to FIG. 1, a combination surgical nerve evaluator and locator 10 is illustrated which include a handpiece 11 that comprises a housing 12. As shown in FIG. 2, the housing 12 accommodates a printed circuit board 13, a DC voltage power supply 14 and a compressed gas source 15. The printed circuit board 13 is electrically connected to the DC power supply 14, the compressed gas supply 15, the locating switch 16, the evaluator or stimulating switch 17 and the light indicator 18.

The printed circuit board 13 includes a pulsed current source which is connected to the electrical lead 21. The other electrical lead 22 (shown in FIG. 3) serves as a return lead or a ground.

When the locator switch 16 is depressed, the pulsed current source of the printed circuit board 13 delivers a continuous train of pulses with a evaluation pattern to the electrical lead 21 at a frequency, pulse duration and amplitude that is optimized to aid the surgeon in finding and locating a nerve. In an preferred embodiment, the nerve location frequency is about 7 hertz but can range from 5 to 9 hertz. The nerve location pulse duration is preferably about 500 μsec, but can range from 300 to 700 μsec. Further, the nerve location amplitude is preferably about 900 ma, but can range from 700 to 1100 ma.

Similarly, depression of the nerve evaluation switch 17 triggers the pulsed current source of the controller board 13 to deliver a pulse train to the electrical lead 21 that is optimized to aid the surgeon in evaluating a located nerve. Preferably, the location frequency is about 2 hertz, but can range from about 1 to about 3 hertz. The nerve evaluation pulse duration is preferably about 250 μsec, but can range from about 150 to about 300 μsec. The nerve evaluation amplitude is preferably about 200 ma, but can range from about 150 to about 250 ma.

By providing location and evaluation pulse trains within the parameters discussed above, the present invention minimizes the possibility of any neuropraxia due to overevaluation of the nerve. The voltage applied to the electrical lead 21 is varied to provide a constant current source.

Once one of the switches 16, 17 is activated, the compressed gas source 15 is also activated. Preferably, the compressed gas source 15 is a pump, such as a solenoid, diaphragm, rotary or vane pump. Such miniature pumps are known, one of which is sold by Sensidyne, of Clearwater, Fla. The compressed gas source 15 delivers compressed gas to the cannula shown at 23. In the embodiment illustrated in FIGS. 1-3, the gas cannula 23 is disposed between the electrical leads 21 and 22. The purpose of the gas cannula 23 and the compressed gas is to blow or dislodge any blood or fluid disposed between the distal ends or electrodes 24, 25 connected to the electrical leads 21, 22 respectively and further to remove blood and fluid from the operative field. The use of the compressed gas or air and the cannula 23 is important in terms of the function of finding or locating nerves.

The compressed gas source 15 may also be a canister of compressed or liquefied gas, such as carbon dioxide, air, nitrogen or helium. In such an embodiment, the canister may be regulated by a switch. Use of a canister of compressed or liquefied gas such as carbon dioxide, air, nitrogen or helium, is in lieu of a pump as discussed above.

An alternative embodiment is illustrated in FIGS. 5 and 6. Specifically, the second or the return electrode 22a is in the form of a cannula. The first or primary electrode 21a that is connected to the pulsed current source of the printed circuit board 13 extends through the cannula or return electrode 22a in a coaxial fashion. Thus, as opposed to the three-part configuration illustrated in FIGS. 3 and 4, the embodiment illustrated in FIGS. 5 and 6 only requires two primary components due to the use of the cannula 22a as a ground or return lead. In the embodiment illustrated in FIGS. 5 and 6, vents 26 are disposed towards the distal end of the cannula or return lead 22a. The vents 26 permit the flow of gas through the vents in the event the distal end 27 of the cannula or return lead 22a becomes clogged with blood, fluid or other debris.

In a further embodiment illustrated in FIGS. 7-9, a fiber optic light guide 31 is mounted on top of the cannula 23a and between the electrical leads 21a and 22a. The fiber optic light guide 31 provides illumination to the area disposed between the distal ends or electrodes 24a, 25a. In a preferred embodiment, the fiber optic light guide 31 is connected to the DC power source 14.

Referring back to FIG. 2, it will be noted that the light indicator 18 is connected to both the electrical leads 21, 22 and will be illuminated when there is a current flow between the leads 21, 22. In other words, the light indicator 18 will be illuminated when the device is working or when current is being transmitted from the electrical lead 21, through the patient's body to the electrical lead 22.

The electrical circuitry utilized to enable the device 10 to deliver a pulsed current for purposes of nerve location and another pulsed current for purposes of nerve evaluation, both of which fall within the parameters described above, will be apparent to those skilled in the art. Hence, a detailed schematic of the printed circuit board 13 is not provided. However, construction of the printed circuit board 13 in view of the objects described above is well within the knowledge of those skilled in the art.

Accordingly, an improved hand-held and disposable combination nerve evaluator and locator is provided which requires no additional ground connections to the patient or adjacent equipment. The device can be manufactured easily and inexpensively and therefore can be disposable. The DC current source 14 can be a suitable battery intended for one time use.

From the above description it is apparent that the objects of the present invention have been achieved. While only certain embodiments have been set forth, alternative embodiments and various modifications will be apparent from the above description to those skilled in the art. These and other alternatives are considered equivalents and within the spirit and scope of the present invention.

Claims (53)

1. A hand-held combination surgical nerve evaluator and locator comprising:
a handpiece comprising a housing that accommodates a circuit board connected to a DC voltage source, the circuit board comprising a pulsed current source, the pulsed current source being connected to a first electrical lead, the housing also being connected to a second electrical lead, the first and second electrical leads extending outward from one end of the housing in a parallel and spaced-apart fashion,
the circuit board and pulsed current source being connected to a nerve evaluation on/off switch and a nerve location on/off switch,
movement of the nerve evaluation switch to an activation position causing a first pulsed current to be generated by the pulsed current source and transmitted to the first electrical lead, the first pulsed current having a nerve evaluation frequency, a nerve evaluation pulse duration and a nerve evaluation amplitude,
movement of the nerve location switch to an activation position causing a second pulsed current to be generated by the pulsed current source and transmitted to the first electrical lead, the second pulsed current having a nerve location frequency, a nerve location pulse duration and a nerve location amplitude,
the nerve evaluation frequency being less than the nerve location frequency, the nerve evaluation pulse duration being less than the nerve location pulse duration, and the nerve evaluation amplitude being less than the nerve location amplitude,
the second electrical lead serving as a ground.
2. The hand-held combination surgical nerve evaluator and locator of claim 1 further comprising the nerve location frequency ranges from about 5 to about 9 Hz, the nerve location pulse duration ranges from about 300 to about 700 μsec, the nerve location amplitude ranges from about 700 to about 1100 ma mA, the nerve evaluation frequency ranges from about 1 to about 3 Hz, the nerve evaluation pulse duration ranges from about 150 to less than 300 μsec and the nerve evaluation amplitude ranges from about 150 to about 250 ma mA.
3. The hand-held combination surgical nerve evaluator and locator of claim 1 further comprising a compressed gas source located within the housing and connected to the circuit board and a cannula connected to the compressed gas source, the cannula, the first electrical lead and the second electrical lead all comprising distal ends, the cannula extending outward from the one end of the housing and between the first and second electrical leads,
movement of either the nerve location switch or the nerve evaluation switch to an activation position causing the compressed gas source to communicate pressurized gas through the cannula and between the distal ends of the first and second electrical leads.
4. The hand-held combination surgical nerve evaluator and locator of claim 3 wherein the compressed gas source is a pump.
5. The hand-held combination surgical nerve evaluator and locator of claim 4 wherein the pump is of a type selected from the group consisting of solenoid pump, diaphragm pump, rotary pump and vane pump.
6. The hand-held combination surgical nerve evaluator and locator of claim 3 wherein the compressed gas source is a canister of compressed gas.
7. The hand-held combination surgical nerve evaluator and locator of claim 6 wherein the compressed gas is selected from the group consisting of carbon dioxide, air, nitrogen and helium.
8. The hand-held combination surgical nerve evaluator and locator of claim 1 further comprising a compressed gas source located within the housing and connected to the circuit board,
and wherein the second electrical lead comprises a cannula connected to the compressed gas source, the first electrical lead and second electrical lead each comprising distal ends, the first electrical lead extending outward from the one end of the housing and through the second electrical lead,
movement of either the nerve location switch or the nerve evaluation switch to an activation position causing the compressed gas source to communicate pressurized gas through the second electrical lead and between the distal ends of the first and second electrical leads.
9. The hand-held combination surgical nerve evaluator and locator of claim 8 wherein the compressed gas source is a pump.
10. The hand-held combination surgical nerve evaluator and locator of claim 9 wherein the pump is of a type selected from the group consisting of solenoid pump, diaphragm pump, rotary pump and vane pump.
11. The hand-held combination surgical nerve evaluator and locator of claim 5 wherein the second electrical lead comprises a distal end having at least one vent.
12. The hand-held combination surgical nerve evaluator and locator of claim 1 further comprising a fiber optic light guide connected to the DC voltage source, the fiber optic light guide extending outward from the one end of the housing and along the first and second electrical leads.
13. The hand-held combination surgical nerve evaluator and locator of claim 1 wherein the DC voltage source is a battery.
14. A method of locating a nerve in a patient comprising the following steps:
providing a hand-held combination surgical nerve locator comprising a handpiece comprising a housing that accommodates a circuit board connected to the DC voltage source, the circuit board comprising a pulsed current source, the pulsed current source being connected to a first electrical lead, the housing also being connected to a second electrical lead, the second electrical lead serving as a ground, the first and second electrical leads extending outward from one end of the housing in a parallel and spaced-apart fashion, the circuit board and pulsed current source being connected to a nerve location switch, the housing also accommodating a compressed gas source which is connected to the circuit board and a cannula that is connected to the compressed gas source, the cannula, first electrical lead and second electrical lead all comprising distal ends, the cannula extending outward from the one end of the housing and between the first and second electrical leads,
engaging a patient with distal ends of the cannula and first and second electrical leads,
moving the nerve location switch to an activation position causing the compressed gas source to communicate pressurized gas through the cannula and between the distal ends of the first and second electrical leads thereby removing excess blood disposed between the first and second electrical leads and further causing a pulsed current to be generated by the pulsed current source and transmitted to the first electrical lead.
15. The method of claim 14 wherein the compressed gas source is a pump.
16. The method of claim 14 wherein the compressed gas source is a canister of compressed gas regulated by a switch.
17. The method of claim 16 wherein the compressed gas is selected from the group consisting of carbon dioxide, air, nitrogen and helium.
18. The method of claim 14 wherein the second electrical lead is the cannula connected to the compressed gas source.
19. The method of claim 14 wherein the hand-held combination surgical nerve evaluator and locator further comprises a fiber optic light guide connected to the DC voltage source, the fiber optic light guide extending outward from the one end of the housing and along the first and second electrical leads,
the method further comprising the step of illuminating and area around the distal ends of the cannula and first and second electrical leads with the fiber optic light guide.
20. The method of claim 14 wherein the nerve location frequency ranges from about 5 to about 9 Hz, the nerve location pulse duration ranges from about 300 to about 700 μsec, the nerve location amplitude ranges from about 700 to about 1100 ma mA.
21. A method of evaluating a nerve in a patient comprising the following steps:
providing a hand-held combination surgical nerve evaluator and locator comprising a handpiece comprising a housing that accommodates a circuit board connected to the DC voltage source, the circuit board comprising a pulsed current source, the pulsed current source being connected to a first electrical lead, the housing also being connected to a second electrical lead, the second electrical lead serving as a ground, the first and second electrical leads extending outward from one end of the housing in a parallel and spaced-apart fashion, the circuit board and pulsed current source being connected to a nerve evaluation switch, the housing also accommodating a compressed gas source which is connected to the circuit board and a cannula that is connected to the compressed gas source, the cannula, first electrical lead and second electrical lead all comprising distal ends, the cannula extending outward from the one end of the housing and between the first and second electrical leads,
engaging a patient with distal ends of the cannula and first and second electrical leads,
moving the nerve evaluation switch to an activation position causing the compressed gas source to communicate pressurized gas through the cannula and between the distal ends of the first and second electrical leads thereby removing excess blood disposed between the first and second electrical leads and further causing a pulsed current to be generated by the pulsed current source and transmitted to the first electrical lead.
22. The method of claim 21 wherein the compressed gas source is a pump.
23. The method of claim 21 wherein the second electrical lead is the cannula connected to the compressed gas source.
24. The method of claim 21 wherein the hand-held combination surgical nerve evaluator and locator further comprises a fiber optic light guide connected to the DC voltage source, the fiber optic light guide extending outward from the one end of the housing and along the first and second electrical leads,
the method further comprising the step of illuminating and area around the distal ends of the cannula and first and second electrical leads with the fiber optic light guide.
25. The method of claim 21 wherein the nerve evaluation frequency ranges from about 1 to about 3 Hz, the nerve evaluation pulse duration ranges from about 150 to less than 300 μsec and the nerve evaluation amplitude ranges from about 150 to about 250 ma mA.
26. A hand-held combination surgical nerve evaluator and locator comprising:
a handpiece comprising a housing that accommodates a circuit board connected to the a DC voltage source, the circuit board comprising a pulsed current source, the pulsed current source being connected to a first electrical lead, the housing also being connected to a second electrical lead, the first and second electrical leads extending outward from one end of the housing in a parallel and spaced-apart fashion, the housing also accommodating a compressed gas source connected to the circuit board and a cannula connected to the compressed gas source, the cannula, first electrical lead and second electrical lead all comprising distal ends, the cannula extending outward from the one end of the housing and between the first and second electrical leads,
the DC voltage source being connected to a fiber optic light guide that extends outward from the one end of the housing and along the first and second electrical leads,
the circuit board and pulsed current source being connected to a nerve evaluation switch and a nerve location switch,
movement of the nerve evaluation switch to an activation position causing a first pulsed current to be generated by the pulsed current source and transmitted to the first electrical lead, the first pulsed current having a nerve evaluation frequency, a nerve evaluation pulse duration and a nerve evaluation amplitude,
movement of the nerve location switch to an activation position causing a second pulsed current to be generated by the pulsed current source and transmitted to the first electrical lead, the second pulsed current having a nerve location frequency, a nerve location pulse duration and a nerve location amplitude,
movement of either the nerve location switch or the nerve evaluation switch to an activation position causing the compressed gas source to communicate pressurized gas through the cannula and between the distal ends of the first and second electrical leads and further causing the fiber optic light guide to illuminate the distal ends of the first and second electrical leads,
the nerve evaluation frequency being less than the nerve location frequency, the nerve evaluation pulse duration being less than the nerve location pulse duration, and the nerve evaluation amplitude being less than the nerve location amplitude,
the second electrical lead serving as a ground.
27. The hand-held combination surgical nerve evaluator and locator of claim 26 wherein the second electrical lead is the cannula and the first electrical lead extends through the second electrical lead.
28. A cordless handheld nerve locator and evaluator device, the device comprising:
first and second electrodes each having distal ends adjacent to each other and configured to be in contact with biological tissue;
a current source coupled to the first electrode and configured to generate an electrical stimulus; and
a control device configured to select operation of the current source in a first mode based solely on actuation of a first mode switch and a second mode based solely on actuation of a second mode switch, wherein
the current source is further configured to generate a first electrical stimulus in the first mode, the first electrical stimulus including a first frequency range, a first amplitude range, and a first pulse duration range,
the current source is further configured to generate a second electrical stimulus in the second mode, the second electrical stimulus including a second frequency range, a second amplitude range, and a second pulse duration range, and
the second frequency range is greater than the first frequency range, the second amplitude range is greater than the first amplitude range, and the second pulse duration range is greater than the first pulse duration range.
29. The device of claim 28, wherein the first electrode extends coaxially through at least a portion of the second electrode.
30. The device of claim 29, wherein the second electrode includes a cannula configured to direct gas flow to a region between the distal ends of the first and second electrodes.
31. The device of claim 30, wherein the cannula further comprises at least one vent configured to exhaust compressed gas flowing through the cannula.
32. The device of claim 30, wherein the cannula is disposed between the first electrode and the second electrode.
33. The device of claim 30, wherein the cannula is formed as the second electrode.
34. The device of claim 30, further comprising a gas source coupled to the cannula and configured to provide compressed gas in a region between the distal ends of the first and second electrodes.
35. The device of claim 34, wherein the control device is further configured to activate the gas source based on a selection of one of the first and second modes.
36. The device of claim 34, wherein the gas source contains a gas comprising any one of carbon dioxide, air, nitrogen, and helium.
37. The device of claim 34, wherein the gas source comprises a pump coupled to the cannula.
38. The device of claim 37, wherein the pump includes any one of a solenoid pump, diaphragm pump, rotary pump, and vane pump.
39. The device of claim 28, wherein the first mode includes a first current amplitude of 200 mA and the second mode includes a second current amplitude of 900 mA.
40. The device of claim 28, wherein the first mode includes a first pulse duration of 250 μs and the second mode includes a second pulse duration of 500 μs.
41. The device of claim 28, wherein the first mode includes a first frequency component of 2 Hz and the second mode includes a second frequency component of 7 Hz.
42. The device of claim 28, further comprising an optical light configured to provide illumination to at least a region between the distal ends of the first and second electrodes.
43. The device of claim 28, wherein the first mode includes a first frequency range from about 5 Hz to about 9 Hz.
44. The device of claim 28, wherein the first mode includes a first pulse duration range from about 300 μsec to about 700 μsec.
45. The device of claim 28, wherein the first mode includes a first amplitude range from about 700 mA to about 1100 mA.
46. The device of claim 28, wherein the second mode includes a second frequency range from about 1 Hz to about 3 Hz.
47. The device of claim 28, wherein the second mode includes a second pulse duration range from about 150 μsec to about 300 μsec.
48. The device of claim 28, wherein the second mode includes a second amplitude range from about 150 mA to about 250 mA.
49. The device of claim 28, further comprising a handheld housing configured to support at least one of the first and second electrodes.
50. The device of claim 50, wherein the housing includes a power source.
51. A method of locating and evaluating a nerve using a cordless handheld nerve locator and evaluator device, comprising:
positioning the device to be in contact with biological tissue at a first position;
operating the device in a first mode to locate the nerve while the device is in contact with the biological tissue at the first position;
repositioning the device to be in contact with the biological tissue at a second position; and
operating the device in a second mode to evaluate the nerve while the device is in contact with the biological tissue at the second position, wherein
the device includes first and second electrodes each having distal ends adjacent to each other and configured to be in contact with the biological tissue, a current source coupled to the first electrode and configured to generate an electrical stimulus, and a control device configured to select operation of the current source in a first mode based solely on actuation of a first mode switch and a second mode based solely on actuation of a second mode switch,
the current source is further configured to generate a first electrical stimulus when operating the device in the first mode, the first electrical stimulus including a first frequency range, a first amplitude range, and a first pulse duration range,
the current source is further configured to generate a second electrical stimulus when operating the device in the second mode, the second electrical stimulus including a second frequency range, a second amplitude range, and a second pulse duration range, and
the second frequency range is greater than the first frequency range, the second amplitude range is greater than the first amplitude range, and the second pulse duration range is greater than the first pulse duration range.
52. The method of claim 51, further comprising
flowing gas between the first electrode and the second electrode when operating the device in one of the first and second modes.
53. The method of claim 51, wherein operating the device in one of the first and second modes further includes illuminating the biological tissue.
US10/702,056 2000-04-06 2003-11-06 Bipolar handheld nerve locator and evaluator Active USRE44049E1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US09/544,384 US6312392B1 (en) 2000-04-06 2000-04-06 Bipolar handheld nerve locator and evaluator
US10/702,056 USRE44049E1 (en) 2000-04-06 2003-11-06 Bipolar handheld nerve locator and evaluator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/702,056 USRE44049E1 (en) 2000-04-06 2003-11-06 Bipolar handheld nerve locator and evaluator

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US09/544,384 Reissue US6312392B1 (en) 2000-04-06 2000-04-06 Bipolar handheld nerve locator and evaluator

Publications (1)

Publication Number Publication Date
USRE44049E1 true USRE44049E1 (en) 2013-03-05

Family

ID=24171943

Family Applications (2)

Application Number Title Priority Date Filing Date
US09/544,384 Active US6312392B1 (en) 2000-04-06 2000-04-06 Bipolar handheld nerve locator and evaluator
US10/702,056 Active USRE44049E1 (en) 2000-04-06 2003-11-06 Bipolar handheld nerve locator and evaluator

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US09/544,384 Active US6312392B1 (en) 2000-04-06 2000-04-06 Bipolar handheld nerve locator and evaluator

Country Status (1)

Country Link
US (2) US6312392B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060025702A1 (en) * 2004-07-29 2006-02-02 Medtronic Xomed, Inc. Stimulator handpiece for an evoked potential monitoring system

Families Citing this family (97)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT306213T (en) 1998-12-23 2005-10-15 Nuvasive Inc Devices for cannulation and nerve monitoring
CA2594492A1 (en) 1999-03-07 2000-09-14 Active Implants Corporation Method and apparatus for computerized surgery
US6466817B1 (en) * 1999-11-24 2002-10-15 Nuvasive, Inc. Nerve proximity and status detection system and method
US7470236B1 (en) 1999-11-24 2008-12-30 Nuvasive, Inc. Electromyography system
AU6323901A (en) 2000-05-18 2001-11-26 Nuvasive Inc Tissue discrimination and applications in medical procedures
US6500131B2 (en) * 2001-03-19 2002-12-31 Orthoscan Technologies, Inc. Contour mapping system applicable as a spine analyzer, and probe useful therein
US6524260B2 (en) * 2001-03-19 2003-02-25 Ortho Scan Technologies Inc. Contour mapping system and method particularly useful as a spine analyzer and probe therefor
EP1417000B1 (en) 2001-07-11 2018-07-11 Nuvasive, Inc. System for determining nerve proximity during surgery
WO2003026482A2 (en) 2001-09-25 2003-04-03 Nuvasive, Inc. System and methods for performing surgical procedures and assessments
US7664544B2 (en) 2002-10-30 2010-02-16 Nuvasive, Inc. System and methods for performing percutaneous pedicle integrity assessments
GB0202977D0 (en) * 2002-02-08 2002-03-27 Univ Dundee Device and apparatus for applying electrical stimulus to a system and acquiring a system response
GB0202966D0 (en) * 2002-02-08 2002-03-27 Univ Dundee Device and apparatus for applying electrical stimulus to a system and acquiring a system response
EP1471826B1 (en) * 2002-02-08 2017-04-12 Forstgarten International Holding GmbH Portable dental test apparatus and use thereof
US7582058B1 (en) 2002-06-26 2009-09-01 Nuvasive, Inc. Surgical access system and related methods
EP1534130A4 (en) * 2002-09-04 2008-09-03 William F Urmey Positioning system for a nerve stimulator needle
US8137284B2 (en) 2002-10-08 2012-03-20 Nuvasive, Inc. Surgical access system and related methods
US8147421B2 (en) 2003-01-15 2012-04-03 Nuvasive, Inc. System and methods for determining nerve direction to a surgical instrument
US7691057B2 (en) 2003-01-16 2010-04-06 Nuvasive, Inc. Surgical access system and related methods
US7819801B2 (en) 2003-02-27 2010-10-26 Nuvasive, Inc. Surgical access system and related methods
US20040225228A1 (en) 2003-05-08 2004-11-11 Ferree Bret A. Neurophysiological apparatus and procedures
US8419728B2 (en) 2003-06-30 2013-04-16 Depuy Products, Inc. Surgical scalpel and system particularly for use in a transverse carpal ligament surgical procedure
AU2004263152B2 (en) 2003-08-05 2009-08-27 Nuvasive, Inc. Systems and methods for performing dynamic pedicle integrity assessments
EP1680177B1 (en) 2003-09-25 2017-04-12 NuVasive, Inc. Surgical access system
US7905840B2 (en) 2003-10-17 2011-03-15 Nuvasive, Inc. Surgical access system and related methods
US8521295B2 (en) * 2004-09-23 2013-08-27 Michael D. Laufer Location and deactivation of muscles
US9622732B2 (en) 2004-10-08 2017-04-18 Nuvasive, Inc. Surgical access system and related methods
US20060095028A1 (en) 2004-10-15 2006-05-04 Baxano, Inc. Devices and methods for tissue access
US8221397B2 (en) 2004-10-15 2012-07-17 Baxano, Inc. Devices and methods for tissue modification
US7738969B2 (en) 2004-10-15 2010-06-15 Baxano, Inc. Devices and methods for selective surgical removal of tissue
US7938830B2 (en) 2004-10-15 2011-05-10 Baxano, Inc. Powered tissue modification devices and methods
US8062298B2 (en) 2005-10-15 2011-11-22 Baxano, Inc. Flexible tissue removal devices and methods
US20110004207A1 (en) 2004-10-15 2011-01-06 Baxano, Inc. Flexible Neural Localization Devices and Methods
US7887538B2 (en) 2005-10-15 2011-02-15 Baxano, Inc. Methods and apparatus for tissue modification
US8257356B2 (en) 2004-10-15 2012-09-04 Baxano, Inc. Guidewire exchange systems to treat spinal stenosis
US8430881B2 (en) 2004-10-15 2013-04-30 Baxano, Inc. Mechanical tissue modification devices and methods
US9101386B2 (en) 2004-10-15 2015-08-11 Amendia, Inc. Devices and methods for treating tissue
US8617163B2 (en) 2004-10-15 2013-12-31 Baxano Surgical, Inc. Methods, systems and devices for carpal tunnel release
US8048080B2 (en) 2004-10-15 2011-11-01 Baxano, Inc. Flexible tissue rasp
US7578819B2 (en) 2005-05-16 2009-08-25 Baxano, Inc. Spinal access and neural localization
US8092456B2 (en) 2005-10-15 2012-01-10 Baxano, Inc. Multiple pathways for spinal nerve root decompression from a single access point
US8366712B2 (en) 2005-10-15 2013-02-05 Baxano, Inc. Multiple pathways for spinal nerve root decompression from a single access point
US20110190772A1 (en) 2004-10-15 2011-08-04 Vahid Saadat Powered tissue modification devices and methods
US8062300B2 (en) 2006-05-04 2011-11-22 Baxano, Inc. Tissue removal with at least partially flexible devices
EP1799129A4 (en) 2004-10-15 2012-09-19 Baxano Inc Devices and methods for tissue removal
US9247952B2 (en) 2004-10-15 2016-02-02 Amendia, Inc. Devices and methods for tissue access
US20100331883A1 (en) 2004-10-15 2010-12-30 Schmitz Gregory P Access and tissue modification systems and methods
US7785253B1 (en) 2005-01-31 2010-08-31 Nuvasive, Inc. Surgical access system and related methods
US7643884B2 (en) * 2005-01-31 2010-01-05 Warsaw Orthopedic, Inc. Electrically insulated surgical needle assembly
US8568331B2 (en) 2005-02-02 2013-10-29 Nuvasive, Inc. System and methods for monitoring during anterior surgery
US8092455B2 (en) 2005-02-07 2012-01-10 Warsaw Orthopedic, Inc. Device and method for operating a tool relative to bone tissue and detecting neural elements
US20060178594A1 (en) * 2005-02-07 2006-08-10 Neubardt Seth L Apparatus and method for locating defects in bone tissue
WO2011103003A1 (en) * 2010-02-16 2011-08-25 Checkpoint Surgical, Llc Systems and methods for intra-operative semi-quantitative threshold neural response testing
US20060200219A1 (en) * 2005-03-01 2006-09-07 Ndi Medical, Llc Systems and methods for differentiating and/or identifying tissue regions innervated by targeted nerves for diagnostic and/or therapeutic purposes
US20110060238A1 (en) * 2005-03-01 2011-03-10 Checkpoint Surgical, Llc Systems and methods for intra-operative physiological functional stimulation
US7878981B2 (en) * 2005-03-01 2011-02-01 Checkpoint Surgical, Llc Systems and methods for intra-operative stimulation
US7896815B2 (en) * 2005-03-01 2011-03-01 Checkpoint Surgical, Llc Systems and methods for intra-operative stimulation
US10154792B2 (en) 2005-03-01 2018-12-18 Checkpoint Surgical, Inc. Stimulation device adapter
US20110060243A1 (en) * 2005-03-01 2011-03-10 Checkpoint Surgical, Llc Systems and methods for intra-operative regional neural stimulation
US20110054346A1 (en) * 2005-03-01 2011-03-03 Checkpoint Surgical, Llc Systems and methods for Intra-operative semi-quantitative threshold neural response testing related applications
US20110060242A1 (en) * 2005-03-01 2011-03-10 Checkpoint Surgical, Llc Systems and methods for intra-operative stimulation within a surgical field
US20060276782A1 (en) * 2005-06-06 2006-12-07 Tewodros Gedebou Nerve stimulator for use as a surgical guide
US8740783B2 (en) 2005-07-20 2014-06-03 Nuvasive, Inc. System and methods for performing neurophysiologic assessments with pressure monitoring
EP1912578B1 (en) 2005-07-28 2018-02-07 NuVasive, Inc. Total disc replacement system
US8568317B1 (en) 2005-09-27 2013-10-29 Nuvasive, Inc. System and methods for nerve monitoring
US8016846B2 (en) 2005-10-27 2011-09-13 Medtronic Xomed, Inc. Micro-resecting and evoked potential monitoring system and method
US7717932B2 (en) * 2005-10-27 2010-05-18 Medtronic Xomed, Inc. Instrument and system for surgical cutting and evoked potential monitoring
US8945164B2 (en) 2005-10-27 2015-02-03 Medtronic Xomed, Inc. Guard device for surgical cutting and evoked potential monitoring system
US8313430B1 (en) 2006-01-11 2012-11-20 Nuvasive, Inc. Surgical access system and related methods
US7857813B2 (en) 2006-08-29 2010-12-28 Baxano, Inc. Tissue access guidewire system and method
US8192436B2 (en) 2007-12-07 2012-06-05 Baxano, Inc. Tissue modification devices
US8374673B2 (en) 2007-01-25 2013-02-12 Warsaw Orthopedic, Inc. Integrated surgical navigational and neuromonitoring system having automated surgical assistance and control
US7987001B2 (en) 2007-01-25 2011-07-26 Warsaw Orthopedic, Inc. Surgical navigational and neuromonitoring instrument
WO2008124079A1 (en) 2007-04-03 2008-10-16 Nuvasive, Inc. Neurophysiologic monitoring system
WO2009032363A1 (en) 2007-09-06 2009-03-12 Baxano, Inc. Method, system and apparatus for neural localization
US8409206B2 (en) 2008-07-01 2013-04-02 Baxano, Inc. Tissue modification devices and methods
US8398641B2 (en) 2008-07-01 2013-03-19 Baxano, Inc. Tissue modification devices and methods
US9314253B2 (en) 2008-07-01 2016-04-19 Amendia, Inc. Tissue modification devices and methods
CA2730732A1 (en) 2008-07-14 2010-01-21 Baxano, Inc. Tissue modification devices
US9351845B1 (en) 2009-04-16 2016-05-31 Nuvasive, Inc. Method and apparatus for performing spine surgery
US8287597B1 (en) 2009-04-16 2012-10-16 Nuvasive, Inc. Method and apparatus for performing spine surgery
US8394102B2 (en) 2009-06-25 2013-03-12 Baxano, Inc. Surgical tools for treatment of spinal stenosis
KR101844086B1 (en) 2010-01-05 2018-03-30 큐로 메디컬 인크. Medical heating device and method with self-limiting electrical heating element
US10004445B2 (en) 2010-09-16 2018-06-26 Neurometrix, Inc. Apparatus and method for stimulator on-skin short detection
CN103200867B (en) * 2010-09-16 2016-08-24 神经系统检测公司 Apparatus and method for sural nerve conduction velocity and amplitude measurement automation
US9392953B1 (en) 2010-09-17 2016-07-19 Nuvasive, Inc. Neurophysiologic monitoring
US8876845B2 (en) 2010-09-30 2014-11-04 Loubert Suddaby Sling blade transection of the transverse carpal ligament
US8790406B1 (en) 2011-04-01 2014-07-29 William D. Smith Systems and methods for performing spine surgery
US9198765B1 (en) 2011-10-31 2015-12-01 Nuvasive, Inc. Expandable spinal fusion implants and related methods
WO2013067018A2 (en) 2011-11-01 2013-05-10 Synthes Usa, Llc Intraoperative neurophysiological monitoring system
US9757067B1 (en) 2012-11-09 2017-09-12 Nuvasive, Inc. Systems and methods for performing neurophysiologic monitoring during spine surgery
US9757072B1 (en) 2013-02-11 2017-09-12 Nuvasive, Inc. Waveform marker placement algorithm for use in neurophysiologic monitoring
US10420480B1 (en) 2014-09-16 2019-09-24 Nuvasive, Inc. Systems and methods for performing neurophysiologic monitoring
US20180049754A1 (en) * 2015-03-13 2018-02-22 Redemed S.R.L. Intervertebral prosthesis, apparatus for implanting intervertebral prostheses and surgical method for implanting intervertebral prostheses, particularly for percutaneous mini-invasive surgery procedures
USD837394S1 (en) 2017-07-11 2019-01-01 Neurometrix, Inc. Transcutaneous electrical nerve stimulation (TENS) device
USD857910S1 (en) 2017-09-21 2019-08-27 Neurometrix, Inc. Transcutaneous electrical nerve stimulation device
US20190142494A1 (en) * 2017-11-15 2019-05-16 Myoscience, Inc. Integrated cold therapy and electrical stimulation systems for locating and treating nerves and associated methods
USD861903S1 (en) 2018-05-15 2019-10-01 Neurometrix, Inc. Apparatus for transcutaneous electrical nerve stimulation

Citations (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1158473A (en) * 1913-12-15 1915-11-02 Henry C Hermsmeyer Electric animal-prod.
US1548184A (en) * 1923-04-11 1925-08-04 Will J Cameron Holder and control for pulp testers
US2437697A (en) * 1946-04-01 1948-03-16 Kalom Lawrence Electrical probe
US2516882A (en) * 1948-01-22 1950-08-01 Kalom Lawrence Electrical probe
US2704064A (en) * 1952-09-10 1955-03-15 Meditron Company Neurosurgical stimulator
US3027891A (en) * 1957-10-15 1962-04-03 Colson Corp Cardiac indicator
US3128759A (en) * 1961-03-10 1964-04-14 White S Dental Mfg Co Tooth vitality determining device
US3207151A (en) * 1961-09-27 1965-09-21 Tateisi Denki Kabushikikaisha Instrument for locating particular cutaneous points caused by viscerovascular reflex
US3364929A (en) * 1964-12-21 1968-01-23 Burroughs Wellcome Co Method for administering muscle relaxant drug
US3624484A (en) * 1968-12-13 1971-11-30 Wellcome Foundation Ltd Inc Th Oscillator output circuit configuration
US3664329A (en) * 1970-03-09 1972-05-23 Concept Nerve locator/stimulator
US3810457A (en) * 1971-11-24 1974-05-14 Bosch Elektronik Gmbh Diagnostic apparatus for automatically generating an intensity-time diagram showing points of minimum involuntary muscle movement
US3830226A (en) * 1973-06-15 1974-08-20 Concept Variable output nerve locator
US4100505A (en) * 1976-05-07 1978-07-11 Macan Engineering & Manufacturing Company, Inc. Variable crest factor high frequency generator apparatus
US4191188A (en) * 1976-05-07 1980-03-04 Macan Engineering & Manufacturing Company, Inc. Variable crest factor high frequency generator apparatus
US4207897A (en) * 1976-07-21 1980-06-17 Spembly Limited Cryosurgical probe
US4232680A (en) * 1978-05-16 1980-11-11 Hudleson Bruce D Apparatus and method for transcutaneous electrotherapy nerve stimulator
US4515168A (en) * 1983-07-22 1985-05-07 Chester Martin H Clamp-on nerve stimulator and locator
US4646744A (en) * 1984-06-29 1987-03-03 Zion Foundation Method and treatment with transcranially applied electrical signals
FR2586552A1 (en) 1985-09-04 1987-03-06 Heptagone Sarl Electric current pulse generator, intended in particular for measurement of neuromuscular excitability
US4892105A (en) * 1986-03-28 1990-01-09 The Cleveland Clinic Foundation Electrical stimulus probe
US4962766A (en) * 1989-07-19 1990-10-16 Herzon Garrett D Nerve locator and stimulator
US5176629A (en) * 1989-07-31 1993-01-05 C. R. Bard, Inc. Irrigation system for use with endoscopic procedure
US5269303A (en) * 1991-02-22 1993-12-14 Cyberonics, Inc. Treatment of dementia by nerve stimulation
US5284154A (en) * 1992-04-14 1994-02-08 Brigham And Women's Hospital Apparatus for locating a nerve and for protecting nerves from injury during surgery
US5514131A (en) * 1992-08-12 1996-05-07 Stuart D. Edwards Method for the ablation treatment of the uvula
US5775331A (en) * 1995-06-07 1998-07-07 Uromed Corporation Apparatus and method for locating a nerve
US5779642A (en) * 1996-01-16 1998-07-14 Nightengale; Christopher Interrogation device and method
US5830151A (en) * 1995-04-10 1998-11-03 Innovative Design Associates Apparatus for locating and anesthetizing peripheral nerves a method therefor
US5853373A (en) * 1996-08-05 1998-12-29 Becton, Dickinson And Company Bi-level charge pulse apparatus to facilitate nerve location during peripheral nerve block procedures
US5928158A (en) * 1997-03-25 1999-07-27 Aristides; Arellano Medical instrument with nerve sensor
US6039730A (en) * 1996-06-24 2000-03-21 Allegheny-Singer Research Institute Method and apparatus for cryosurgery
US6129701A (en) * 1998-11-19 2000-10-10 Sound Surgical Technologies, Llc Vented aspirator and method
US6139545A (en) * 1998-09-09 2000-10-31 Vidaderm Systems and methods for ablating discrete motor nerve regions
WO2001012089A1 (en) * 1999-08-12 2001-02-22 Somnus Medical Technologies, Inc. Nerve stimulation and tissue ablation apparatus and method
US6235027B1 (en) 1999-01-21 2001-05-22 Garrett D. Herzon Thermal cautery surgical forceps
US6266558B1 (en) * 1998-12-01 2001-07-24 Neurometrix, Inc. Apparatus and method for nerve conduction measurements with automatic setting of stimulus intensity
US6321119B1 (en) * 1997-09-24 2001-11-20 Healthonics, Inc. Pulsed signal generator for bioelectric stimulation and healing acceleration
US6356783B1 (en) * 1997-11-20 2002-03-12 David R. Hubbard, Jr. Multi-electrode and needle injection device for diagnosis and treatment of muscle injury and pain
US6662051B1 (en) * 2000-03-31 2003-12-09 Stephen A. Eraker Programmable pain reduction device

Patent Citations (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1158473A (en) * 1913-12-15 1915-11-02 Henry C Hermsmeyer Electric animal-prod.
US1548184A (en) * 1923-04-11 1925-08-04 Will J Cameron Holder and control for pulp testers
US2437697A (en) * 1946-04-01 1948-03-16 Kalom Lawrence Electrical probe
US2516882A (en) * 1948-01-22 1950-08-01 Kalom Lawrence Electrical probe
US2704064A (en) * 1952-09-10 1955-03-15 Meditron Company Neurosurgical stimulator
US3027891A (en) * 1957-10-15 1962-04-03 Colson Corp Cardiac indicator
US3128759A (en) * 1961-03-10 1964-04-14 White S Dental Mfg Co Tooth vitality determining device
US3207151A (en) * 1961-09-27 1965-09-21 Tateisi Denki Kabushikikaisha Instrument for locating particular cutaneous points caused by viscerovascular reflex
US3364929A (en) * 1964-12-21 1968-01-23 Burroughs Wellcome Co Method for administering muscle relaxant drug
US3624484A (en) * 1968-12-13 1971-11-30 Wellcome Foundation Ltd Inc Th Oscillator output circuit configuration
US3664329A (en) * 1970-03-09 1972-05-23 Concept Nerve locator/stimulator
US3810457A (en) * 1971-11-24 1974-05-14 Bosch Elektronik Gmbh Diagnostic apparatus for automatically generating an intensity-time diagram showing points of minimum involuntary muscle movement
US3830226A (en) * 1973-06-15 1974-08-20 Concept Variable output nerve locator
US4100505A (en) * 1976-05-07 1978-07-11 Macan Engineering & Manufacturing Company, Inc. Variable crest factor high frequency generator apparatus
US4191188A (en) * 1976-05-07 1980-03-04 Macan Engineering & Manufacturing Company, Inc. Variable crest factor high frequency generator apparatus
US4207897A (en) * 1976-07-21 1980-06-17 Spembly Limited Cryosurgical probe
US4232680A (en) * 1978-05-16 1980-11-11 Hudleson Bruce D Apparatus and method for transcutaneous electrotherapy nerve stimulator
US4515168A (en) * 1983-07-22 1985-05-07 Chester Martin H Clamp-on nerve stimulator and locator
US4646744A (en) * 1984-06-29 1987-03-03 Zion Foundation Method and treatment with transcranially applied electrical signals
FR2586552A1 (en) 1985-09-04 1987-03-06 Heptagone Sarl Electric current pulse generator, intended in particular for measurement of neuromuscular excitability
US4892105A (en) * 1986-03-28 1990-01-09 The Cleveland Clinic Foundation Electrical stimulus probe
US4962766A (en) * 1989-07-19 1990-10-16 Herzon Garrett D Nerve locator and stimulator
US5176629A (en) * 1989-07-31 1993-01-05 C. R. Bard, Inc. Irrigation system for use with endoscopic procedure
US5269303A (en) * 1991-02-22 1993-12-14 Cyberonics, Inc. Treatment of dementia by nerve stimulation
US5284154A (en) * 1992-04-14 1994-02-08 Brigham And Women's Hospital Apparatus for locating a nerve and for protecting nerves from injury during surgery
US5284153A (en) * 1992-04-14 1994-02-08 Brigham And Women's Hospital Method for locating a nerve and for protecting nerves from injury during surgery
US5514131A (en) * 1992-08-12 1996-05-07 Stuart D. Edwards Method for the ablation treatment of the uvula
US5830151A (en) * 1995-04-10 1998-11-03 Innovative Design Associates Apparatus for locating and anesthetizing peripheral nerves a method therefor
US5775331A (en) * 1995-06-07 1998-07-07 Uromed Corporation Apparatus and method for locating a nerve
US5779642A (en) * 1996-01-16 1998-07-14 Nightengale; Christopher Interrogation device and method
US6039730A (en) * 1996-06-24 2000-03-21 Allegheny-Singer Research Institute Method and apparatus for cryosurgery
US5853373A (en) * 1996-08-05 1998-12-29 Becton, Dickinson And Company Bi-level charge pulse apparatus to facilitate nerve location during peripheral nerve block procedures
US5928158A (en) * 1997-03-25 1999-07-27 Aristides; Arellano Medical instrument with nerve sensor
US6321119B1 (en) * 1997-09-24 2001-11-20 Healthonics, Inc. Pulsed signal generator for bioelectric stimulation and healing acceleration
US6356783B1 (en) * 1997-11-20 2002-03-12 David R. Hubbard, Jr. Multi-electrode and needle injection device for diagnosis and treatment of muscle injury and pain
US6139545A (en) * 1998-09-09 2000-10-31 Vidaderm Systems and methods for ablating discrete motor nerve regions
US6129701A (en) * 1998-11-19 2000-10-10 Sound Surgical Technologies, Llc Vented aspirator and method
US6266558B1 (en) * 1998-12-01 2001-07-24 Neurometrix, Inc. Apparatus and method for nerve conduction measurements with automatic setting of stimulus intensity
US6235027B1 (en) 1999-01-21 2001-05-22 Garrett D. Herzon Thermal cautery surgical forceps
US6533778B2 (en) 1999-01-21 2003-03-18 Garrett D. Herzon Thermal cautery surgical forceps
WO2001012089A1 (en) * 1999-08-12 2001-02-22 Somnus Medical Technologies, Inc. Nerve stimulation and tissue ablation apparatus and method
US6662051B1 (en) * 2000-03-31 2003-12-09 Stephen A. Eraker Programmable pain reduction device

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
U.S. Appl. No. 10/326,387, filed Dec. 23, 2002, Herzon.
U.S. Appl. No. 11/512,159, filed Aug. 30, 2006, Herzon.
U.S. Appl. No. 12/577,531, filed Oct. 12, 2009, Herzon.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060025702A1 (en) * 2004-07-29 2006-02-02 Medtronic Xomed, Inc. Stimulator handpiece for an evoked potential monitoring system
US10342452B2 (en) * 2004-07-29 2019-07-09 Medtronic Xomed, Inc. Stimulator handpiece for an evoked potential monitoring system
US10349862B2 (en) 2004-07-29 2019-07-16 Medtronic Xiomed, Inc. Stimulator handpiece for an evoked potential monitoring system

Also Published As

Publication number Publication date
US6312392B1 (en) 2001-11-06

Similar Documents

Publication Publication Date Title
US8768450B2 (en) System and methods for performing surgical procedures and assessments
JP4989808B2 (en) Electrosurgical pencil with drag detection
JP2575953B2 (en) Electric knife device
US6623500B1 (en) Ring contact for rotatable connection of switch assembly for use in a surgical system
US6557559B1 (en) Electrosurgical systems and methods with temperature control
US5275593A (en) Ophthalmic surgery probe assembly
EP0595967B1 (en) Surgical coagulation device
US6960204B2 (en) Electrosurgical method using laterally arranged active electrode
AU686625B2 (en) Bipolar electrosurgical trocar
US5217457A (en) Enhanced electrosurgical apparatus
US6181961B1 (en) Method and apparatus for an automatic setup of a multi-channel nerve integrity monitoring system
US7244257B2 (en) Electrosurgical pencil having a single button variable control
CA2516443C (en) Apparatus and method for intraoperative neural monitoring
US4674499A (en) Coaxial bipolar probe
US20110245843A1 (en) Nerve Surveillance Cannulae Systems
EP0633749B1 (en) Electrosurgical bipolar cutting handpiece
US6482202B1 (en) Under water treatment
US5456689A (en) Method and device for tissue resection
ES2216961T3 (en) Liquefracture handpiece.
EP1804911B1 (en) Stimulator handpiece for an evoked potential monitoring system
US5817091A (en) Electrosurgical device having a visible indicator
US20130023910A1 (en) Tissue-identifying surgical instrument
EP0447121B1 (en) Gas coagulation device
US5334183A (en) Endoscopic electrosurgical apparatus
US5775331A (en) Apparatus and method for locating a nerve

Legal Events

Date Code Title Description
FPAY Fee payment

Year of fee payment: 12