Method for cutting and hemostasis of biological tissue using high-pressure steam-based surgical tool

Patent metadata

Field	Value
Publication number	US-11737806-B2
Application number	US-202117180115-A
Country	US
Kind code	B2
Filing date	Feb 19, 2021
Priority date	May 16, 2018
Publication date	Aug 29, 2023
Grant date	Aug 29, 2023

Abstract

The present disclosure relates to a surgical tool for cutting and hemostasis of biological tissues. The surgical tool includes a hollow blade comprising a cutting implement residing within a hollow cavity configured to provide high-pressure steam through an apical surface. The cutting implement can operate independently or in cooperation with the provided high-pressure steam. The surgical tool of the present disclosure applies a directionally-controlled, high-pressure steam flow to a tissue region of interest. A control unit provides temperature-controlled steam at a flow-rate determined in accordance with tissue type and intended procedure.

First claim

The invention claimed is:

1. A method for incision and hemostasis of a target tissue comprising:
incising the target tissue with a surgical tool comprising a single hollow blade having a plurality of apically disposed ports in fluid communication with a hollow tube and configured to deliver an ablative agent; and
ablating the incised target tissue by delivering the ablative agent via the plurality of apically disposed ports thereby coagulating the incised tissue,
wherein the surgical tool comprises an apparatus comprising:
a handle, disposed at a proximal end of the apparatus, including a reservoir for storage of the ablative agent, wherein the reservoir has a valve disposed at an exit end of the reservoir and a vapor feed line connected to an inlet end at a bottom of the handle;
a coupler connected to the handle and the hollow tube, wherein the hollow tube is configured to connect the coupler to the handle at the exit end of the reservoir, the coupler having a splined surface;
wherein the hollow tube is adjacent to the handle and arranged to be in fluid communication with the reservoir in the handle, wherein the hollow tube in connected to the exit end of the reservoir through the coupler;
a rotary knob disposed on the hollow tube at an end proximal to the coupler and configured to mechanically engage with the splined surface of the coupler to rotate the coupler about a longitudinal axis;
a head element disposed at a distal end of the hollow tube wherein the head element includes an operative element and an assisting element,
wherein the operative element comprises the single hollow blade having the plurality of apically disposed ports in fluid communication with the hollow tube and configured to deliver the ablative agent,
a first wire extending from a trigger mounted on the handle and connecting to the operative element, a second wire extending from the trigger to the assisting element, wherein on engagement, the trigger is configured to simultaneously mechanically retract the assisting element towards the operative element and mechanically open the valve to release the ablative agent from the reservoir into the hollow tube, and
wherein the assisting element of the operative element has a single assisting element that is a single jaw having an apical surface and a basal surface, the basal surface configured to contact the operative element when retracted by operation of the trigger.

2. The method of claim 1 , wherein the target tissue is an internal tissue.

3. The method of claim 1 , wherein the ablative agent is steam.

4. The method of claim 1 , further comprising grasping or holding the target tissue with the assisting element.

5. The method of claim 1 , wherein the surgical tool further comprises an imaging tool for guided surgery.

6. The method of claim 1 , wherein the assisting element includes an arrangement of one or more protrusions, depressions, or a combination thereof, disposed on the basal surface.

7. The method of claim 1 , wherein the head element is substantially linear.

8. The method of claim 1 , wherein the head element deforms in response to a force applied to the first wire and the second wire at the proximal end of the apparatus, the deformation in the head element producing a curvature in the operative element and the assisting element.

9. The method of claim 1 , wherein said apparatus further comprises a temperature control unit for controlling the temperature of the ablative agent, the temperature control unit comprising a heating element and a thermostat.

10. The method of claim 1 , wherein the single hollow blade having the plurality of apically disposed ports is configured to release the ablative agent on opposing surfaces of the blade.

11. The method of claim 1 , wherein the coupler is concentric with the hollow tube and has an outer diameter smaller than an inner diameter of the hollow tube.

Assignees

• Univ Imam Abdulrahman Bin Faisal

Inventors

• Matani Abdelaziz
• Matani Mutasem Samih
• Mansi Ahmed Abdelkarim

Classifications

• A61B18/04 Primary

  by heating (by applying electromagnetic radiation A61B18/18) · CPC title

• A61B17/3203 Primary

  Fluid jet cutting instruments · CPC title

• A61B17/320016

  Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes (A61B10/0233, A61B17/29, A61B17/3207 take precedence) · CPC title

• A61B2017/00084

  Temperature · CPC title

• A61B2017/00349

  Needle-like instruments having hook or barb-like gripping means, e.g. for grasping suture or tissue (A61B17/06066 takes precedence) · CPC title