# US 12,193,722 B2 · Methods and apparatus for electrosurgical illumination and sensing

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- Number: US 12,193,722 B2
- Document ID: US12193722B2
- Status: Granted
- Kind: B2
- Application number: 16/600,224
- Filed: 2019-10-11
- Published: 2020-02-06
- Granted: 2025-01-14
- Earliest claimed: 2014-12-08
- Assignees: Invuity, Inc.
- Applicants: Invuity, Inc.
- Inventors: Alex Vayser; Fernando Erismann; Scott Taylor; Jason Hegener
- Web page: https://patentgrep.com/patent/US12193722B2

## CPC

- A61B 18/1402: {Probes for open surgery}
- A61B 90/30: Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure
- A61B 5/0075: {by spectroscopy, i.e. measuring spectra, e.g. Raman spectroscopy, infrared absorption spectroscopy (A61B5/0071 takes precedence)}
- A61B 5/01: Measuring temperature of body parts {; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue} (clinical contact thermometers G01K13/20)
- A61B 5/0538: invasively, e.g. using a catheter
- A61B 5/6847: {mounted on an invasive device}
- A61B 5/6886: {Monitoring or controlling distance between sensor and tissue}
- A61B 18/1477: {Needle-like probes}
- A61B 2018/00017: {with gas}
- A61B 2018/00589: {Coagulation}
- A61B 2018/00607: {Coagulation and cutting with the same instrument}
- A61B 2018/00797: {measured by multiple temperature sensors}
- A61B 2018/00922: {by switching or controlling the treatment energy directly within the hand-piece}
- A61B 2018/00982: {combined with or comprising means for visual or photographic inspections inside the body, e.g. endoscopes}
- A61B 2018/1412: {Blade}
- A61B 2018/2005: {with beam delivery through an interstitially insertable device, e.g. needle}
- A61B 2090/306: {using optical fibres}
- A61B 2090/309: {using white LEDs}
- A61B 2218/008: for smoke evacuation
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

An illuminated energy device includes a handle, an optical waveguide coupled to the handle, and an energy tip such as an electrode coupled to the optical waveguide. The optical waveguide is preferably adjustably coupled to the optical waveguide, and adjustment of the optical waveguide moves a distal end of the optical waveguide closer to or further away from a target such as tissue in a surgical field.

## Claims

### Claim 1

An illuminated electrosurgical instrument, comprising:
a handle having a proximal end and a distal end;
an optical waveguide having a proximal end and a distal end, wherein the optical waveguide is adjustably coupled to the handle such that a distance between the distal end of the optical waveguide and the proximal end of the handle is adjustable without decoupling the optical waveguide from the handle, wherein the optical waveguide is telescopically arranged with the handle such that (i) a portion of the optical waveguide telescopes out of the handle when the optical waveguide is adjusted distally relative to the handle and (ii) the portion of the optical waveguide telescopes into the handle when the optical waveguide is adjusted proximally relative to the handle;
an electrosurgical tip fixedly and non-adjustably coupled to the optical waveguide, wherein the electrosurgical tip is an electrode blade that extends distally from the distal end of the optical waveguide; and
an electrical conducting element disposed around the optical waveguide, wherein the electrical conducting element is configured to provide radiofrequency (rf) energy to the electrosurgical tip.

### Claim 2 (depends on 1)

The illuminated electrosurgical instrument of claim 1, wherein the electrosurgical tip is removably coupled with the optical waveguide.

### Claim 3 (depends on 1)

The illuminated electrosurgical instrument of claim 1, wherein the electrosurgical tip is integral with the optical waveguide.

### Claim 4 (depends on 1)

The illuminated electrosurgical instrument of claim 1, further comprising a locking mechanism clamped circumferentially around one of the optical waveguide or the electrosurgical tip to inhibit at least one of (i) axial movement of the optical waveguide or the electrosurgical tip along a longitudinal axis of the handle or (ii) rotation of the optical waveguide or the electrosurgical tip about the longitudinal axis of the handle,
wherein the longitudinal axis extends between the proximal end and the distal end of the handle.

### Claim 5 (depends on 4)

The illuminated electrosurgical instrument of claim 4, wherein the locking mechanism comprises at least one feature selected from the group consisting of: a collet, a twist-lock, a quarter-turn lock, and a protrusion-recess locking pair.

### Claim 6 (depends on 1)

The illuminated electrosurgical instrument of claim 1, wherein the optical waveguide is tapered at the proximal end of the optical waveguide.

### Claim 7 (depends on 1)

The illuminated electrosurgical instrument of claim 1, wherein the optical waveguide further comprises at least one optical element selected from a group consisting of: a lens, a hollow reflector, a gradient lens, a lenslet, a plurality of lenslets, a plurality of flat planar facets forming a polygonal outer surface, a filter, and a coating.

### Claim 8 (depends on 1)

The illuminated electrosurgical instrument of claim 1, wherein the optical waveguide comprises one or more smoke evacuation channels extending axially through the optical waveguide from the distal end of the optical waveguide to the proximal end of the optical waveguide.

### Claim 9 (depends on 1)

The illuminated electrosurgical instrument of claim 1, further comprising an illumination element coupled to the optical waveguide, wherein the illumination element and the electrosurgical tip are configured to move with the optical waveguide as the optical waveguide moves relative to the handle.

### Claim 10 (depends on 9)

The illuminated electrosurgical instrument of claim 9, wherein the illumination element comprises a light-emitting diode (LED), a plurality of LEDs, a parabolic LED, a xenon lamp, or any combination thereof.

### Claim 11 (depends on 9)

The illuminated electrosurgical instrument of claim 9, wherein the illumination element is disposed in the handle.

### Claim 12 (depends on 9)

The illuminated electrosurgical instrument of claim 9, wherein the illumination element is external to the optical waveguide.

### Claim 13 (depends on 1)

The illuminated electrosurgical instrument of claim 1, wherein the electrical conducting element comprises at least one element selected from a group consisting of: a wire, a proximal portion of the electrosurgical tip, and a tube.

### Claim 14 (depends on 1)

The illuminated electrosurgical instrument of claim 1, wherein the optical waveguide comprises a solid rod, and
wherein the optical waveguide further comprises a central lumen in which the electrosurgical tip is disposed.

### Claim 15 (depends on 1)

The illuminated electrosurgical instrument of claim 1, further comprising one or more sensors, wherein the one or more sensors comprises at least one sensor selected from a group consisting of: an image sensor, a thermal sensor, inductance sensor, and a spectroscopic sensor.

### Claim 16 (depends on 2)

The illuminated electrosurgical instrument of claim 2, further comprising an insulation coupled to one or more of an outer surface of the optical waveguide, a central channel of the optical waveguide, an outer surface of the electrical conducting element, the electrosurgical tip, an illumination element, or one or more portions of the electrosurgical tip,
and
wherein the insulation comprises one or more of a coating, a cladding, fluorinated ethylene propylene, glass, polytetrafluorinated ethylene, an air gap, or multiple air gaps.

### Claim 17 (depends on 1)

The illuminated electrosurgical instrument of claim 1, wherein a distal portion of the electrode blade is covered by an insulator coating.

### Claim 18 (depends on 1)

The illuminated electrosurgical instrument of claim 1, wherein the optical waveguide and the electrosurgical tip are configured to rotate together relative to the handle without decoupling the optical waveguide and the electrosurgical tip from the handle.