Surgical system and method of use of the same

• US 9,833,146 B2
• Filed: 04/17/2012
• Issued: 12/05/2017
• Est. Priority Date: 04/17/2012
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Lin, Andy S.
• Primary Examiner(s): Downey, John R
• Application Number:
  US13/448,754
• Publication Number:
  US 20130274727A1
• Time in Patent Office: 2,058 Days
• Field of Search: 606 1- 19, 607 88- 94
• CPC Class Codes: A61B 18/22 the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
• CPC Class Codes: A61B 2017/00115 with audible or visual output with imaging means A61B90/37, A61B34/20
• CPC Class Codes: A61B 2018/00577 Ablation
• CPC Class Codes: A61B 2018/00589 Coagulation
• CPC Class Codes: A61B 2018/00601 Cutting
• CPC Class Codes: A61B 2018/00642 with feedback, i.e. closed loop control
• CPC Class Codes: A61B 2018/00702 Power or energy
• CPC Class Codes: A61B 2018/00779 Power or energy
• CPC Class Codes: A61B 2018/2244 Features of optical fibre cables, e.g. claddings
• CPC Class Codes: A61B 2505/05 Surgical care
• CPC Class Codes: A61B 5/0036 including treatment, e.g., using an implantable medical device, ablating, ventilating
• CPC Class Codes: A61B 5/0082 adapted for particular medical purposes

Abstract

A surgical system configured for treating tissue is provided. The surgical system includes a laser source and a laser scalpel. The laser scalpel is adapted to couple to the laser source and is operable in two modes of operation, a first mode of operation to analyze tissue of interest and a second mode of operation to treat tissue of interest. The laser scalpel includes a housing having first and second fiber optic cables extending therethrough. Each of the first and second fiber optic cables operable under the first mode of operation to collect information pertaining to at least one optical property of tissue of interest and at least one of the first and second fiber optic cables also operable under the second mode of operation to treat the tissue of interest.

Claims

1. A surgical system for treating tissue, comprising:

a laser source;

a laser scalpel adapted to couple to the laser source and operable in a first mode of operation to analyze tissue and a second mode of operation to treat the tissue, the laser scalpel including a housing, the housing defining a longitudinal axis and including;

a first pair of opposing planar surfaces defining a length of the housing;

a second pair of opposing planar surfaces separating the first pair of opposing planar surfaces, the second pair of opposing planar surfaces defining a thickness of the housing;

a switch in communication with the laser source and extending from one of the first pair of opposing planar surfaces, the switch configured to be pressed relative to the housing to selectively place the laser scalpel in one of the first or second mode of operation;

a planar first distal face;

a planar second distal face configured to contact the tissue; and

a chamfered third distal face extending proximally from a first linear edge of the first distal planar face to a distal end of one of the first pair of opposing planar surfaces, the second distal face extending proximally from a second linear edge of the first distal face to a distal end of the other of the first pair of opposing planar surfaces and disposed at an oblique angle relative to the longitudinal axis defined by the housing, each of the first, second, and third distal faces disposed between the first pair of opposing planar surfaces; and

first and second fiber optic cables extending through the housing to the planar second distal face and each of the first and second fiber optic cables including a distal tip bulged from the planar second distal face to create a rounded projection extending from the planar second distal face, each of the first and second fiber optic cables operable in the first mode of operation to collect information pertaining to at least one optical property of tissue, and at least one of the first or second fiber optic cables also operable in the second mode of operation to treat tissue, the first fiber optic cable configured to receive amplitude and phase information of a resolvable photon density wave generated through tissue by the second fiber optic cable during the first mode of operation, the laser source including a processor configured to;

utilize the amplitude information to determine a concentrator of an absorber in the tissue;

utilize the phase information to determine a scattering coefficient of the tissue; and

control an intensity level and frequency of a laser beam emitted from the laser scalpel during the second mode of operation based on the determined concentrator of the absorber in the tissue and the determined scattering coefficient of the tissue,

wherein the first and second fiber optic cables are positioned in vertical registration with respect to one another and spaced-apart from one another at a distance that ranges from about 7 mm to about 10 mm.

2. A surgical system according to claim 1, wherein in the first mode of operation, the second fiber optic cable emits a modulated signal at a frequency capable of producing resolvable photon density waves to propagate through the tissue and the first fiber optic cable receives information pertaining to the photon density waves, and in the second mode of operation the second fiber optic cable is operable to treat the tissue.

3. A surgical system according to claim 1, wherein the first optical fiber includes a diameter that ranges from about 700 microns to about 1 mm and the second optical fiber includes a diameter that ranges from about 200 microns to about 400 microns.

4. A surgical system according to claim 1, wherein the laser scalpel is a carbon dioxide laser scalpel.

5. A surgical system according to claim 1, wherein at least one of the first or second fiber optic cables are operable to one of ablate or coagulate the tissue when the laser scalpel is in the second mode of operation.

6. A surgical system according to claim 1, further comprising a third fiber optic cable extending through the housing to the planar second distal face of the housing and including a distal tip bulged from the planar second distal face of the housing to create a rounded projection extending from the planar second distal face.

7. A surgical system according to claim 6, wherein the third fiber optic cable is configured to function as one or both of the first and second fiber optic cables and configured receive resolvable amplitude and phase relationships of photon density waves.

8. A surgical system for treating tissue, comprising:

a laser source;

a laser scalpel adapted to couple to the laser source and operable in a first mode of operation to analyze tissue and a second mode of operation to treat the tissue, the laser scalpel including a housing, the housing defining a longitudinal axis and including;

a first pair of opposing planar surfaces defining a length of the housing;

a second pair of opposing planar surfaces separating the first pair of opposing planar surfaces, the second pair of opposing planar surfaces defining a thickness of the housing;

a push-button switch in communication with the laser source and extending from one of the first pair of opposing planar surfaces, the push-button switch configured to be pressed relative to the housing to selectively place the laser scalpel in one of the first or second mode of operation;

a planar first distal face;

a planar second distal face configured to contact the tissue; and

a chamfered third distal face extending proximally from a first linear edge of the first distal planar face to a distal end of one of the first pair of opposing planar surfaces, the second distal face extending proximally at an oblique angle relative to the longitudinal axis from a second linear edge of the first distal face to a distal end of the other of the first pair of opposing planar surfaces; and

first and second fiber optic cables extending through the housing to the planar second distal face, each of the first and second fiber optic cables operable in the first mode of operation to collect information pertaining to at least one optical property of tissue, and at least one of the first or second fiber optic cables also operable in the second mode of operation to treat tissue.