Cautery apparatus

Patent metadata

Field	Value
Publication number	US-10792086-B2
Application number	US-201514955962-A
Country	US
Kind code	B2
Filing date	Dec 1, 2015
Priority date	Nov 6, 2014
Publication date	Oct 6, 2020
Grant date	Oct 6, 2020

Abstract

A cautery device includes an elongated handpiece extending axially from a proximal end to a distal end and a cautery tip extending coaxially with the handpiece from the distal end of the handpiece. The tip defines a channel extending coaxially with the handpiece along at least a portion of the length of the cautery tip from a proximal open end to a distal end. The device includes a gas supply connection extending from the proximal end of the handpiece for supplying gas to the cautery tip. The gas supply connection is fluidly coupled to the cautery tip. The device includes an electric supply connection extending from the proximal end of the handpiece for supplying electricity to the cautery tip. The electric supply connection is electrically coupled to the cautery tip. The gas supplied to the cautery tip is introduced to the channel at the proximal open end and exits to envelop the distal tip.

First claim

What is claimed is:

1. A cautery system, comprising:
an elongated handpiece extending axially from a proximal end to a distal end;
a cautery tip extending from the distal end of the handpiece;
a gas supply connection extending from the handpiece for supplying gas at the cautery tip;
a gas source connected to the gas supply connection which supplies non-flammable gas for delivery to the cautery tip;
an electric supply connection extending from the handpiece for connection to an electric supply for delivering energy to the cautery tip, the electric supply connection electrically coupled to the cautery tip;
an electrical unit configured to control the delivery of energy to the cautery tip from the electric supply, wherein when energy is delivered to the cautery tip from the electric supply the cautery tip is adapted to at least one of cut or coagulate tissue;
a spring disposed in direct contact with the electrical unit at least one button coupled to the handpiece that actuates the electrical unit for selectively delivering energy to the cautery tip; and
a single valve fluidly coupled between the cautery tip and the gas supply connection, the valve adapted to regulate a variable flow rate of the non-flammable gas from the gas supply connection to the cautery tip, the valve coupled to the at least one button such that when the at least one button is actuated, the valve moves within the handpiece from a closed configuration toward an open configuration to actuate the electrical unit to control the delivery of energy to the cautery tip and to permit the delivery of the non-flammable gas to the cautery tip, the at least one button configured to maintain the delivery of the energy to the cautery tip while adjusting the delivery of the non-flammable gas to the cautery tip by causing the valve, while in the open configuration, to compress the spring against the electrical unit while the valve is moving within the handpiece.

2. The cautery system according to claim 1 , wherein the non-flammable gas is carbon dioxide and creates a non-flammable zone around the cautery tip.

3. The cautery system according to claim 1 , wherein:
the at least one button includes a first button and a second button,
the first button, when pressed, actuating the electrical unit to deliver energy to the cautery tip suitable for coagulating tissue, and
the second button, when pressed, actuating the electrical unit to deliver energy to the cautery tip suitable for cauterizing tissue.

4. The cautery system according to claim 1 , wherein the valve has a range of motion and is progressively opened as a function of a distance traveled by the at least one button.

5. The cautery system according to claim 1 , wherein the at least one button has a range of motion, and the flow rate of the non-flammable gas is adjustable based on the position of the at least one button in the range of motion.

6. The cautery system according to claim 1 , wherein a first pressure applied to the at least one button at least partially moves the valve to the open configuration to permit the delivery of non-flammable gas to the cautery tip without actuation of the electrical unit, and a second pressure greater than the first pressure applied to the at least one button actuates the electrical unit.

7. The cautery system according to claim 1 , wherein the electrical unit is removably coupled to the cautery tip.

8. The cautery system according to claim 1 , wherein the cautery tip is replaceable within the handpiece.

9. The cautery system according to claim 1 , wherein the electrical unit has a plurality of circuits, each circuit supplying a predetermined amount of energy for delivery to the cautery tip based on actuation of the at least one button.

10. The cautery system according to claim 1 , wherein the gas supply and the electric supply are coupled to the handpiece through a multilumen flexible tube, and the gas supply and electric supply are coupled to the handpiece through respective lumens of the multilumen flexible tube.

11. The cautery system of claim 1 , further comprising:
a holder adapted to receive the handpiece; and
a switch coupled to the handpiece configured to control the delivery of energy to the cautery tip based on a position of the handpiece relative to the holder.

12. The cautery system of claim 11 , wherein the switch is a normally closed switch that is configured to permit the delivery of energy to the cautery tip when the handpiece is not disposed in the holder and is configured to prevent the delivery of energy to the cautery tip when the handpiece is disposed in the holder.

13. A cautery system, comprising:
a handpiece, a gas lumen extending through the handpiece and an electrical unit provided within the handpiece, the electrical unit having a control circuit and a socket;
a cautery tip removably electrically coupled within the socket and extending distally from the handpiece, the cautery tip having a proximal portion, a distal end, and a hollow gas passage defined in at least the proximal portion of the cautery tip, wherein the electrical unit is configured to deliver energy to the cautery tip to at least one of cut or coagulate tissue;
a gas supply connection configured to deliver non-flammable gas to the gas lumen, the gas lumen in fluid communication with the hollow gas passage of the cautery tip so that the non-flammable gas delivered via the gas supply connection can flow through the hollow gas passage of the cautery tip and toward the distal end of the cautery tip to create a non-flammable zone around the cautery tip; and
a collet defining a longitudinal lumen configured to removably receive a portion of the cautery tip for stabilizing the cautery tip within the handpiece, the portion of the cautery tip removably received within the collet having an outer surface that defines a plurality of radial openings in fluid communication with the hollow gas passage of the cautery tip such that the non-flammable gas flowing through the hollow gas passage exits the cautery tip into the longitudinal lumen defined by the collet via the plurality of radial openings.

14. The cautery system of claim 13 , wherein the handpiece extends axially from a proximal end to a distal end of the handpiece, and the socket is disposed at the distal end of the handpiece.

15. The cautery system of claim 13 , wherein the gas passage of the cautery tip and at least a portion of the gas lumen are coaxial.

16. The cautery system of claim 13 , wherein the cautery tip has a closed distal end.

17. The cautery system of claim 16 , wherein the distal end of the cautery tip tapers to a smaller dimension.

18. The cautery system of claim 13 , further comprising:
a holder adapted to receive the handpiece; and
a switch coupled to the hand piece and configured to control the delivery of energy to the cautery tip based on a position of the handpiece relative to the holder.

19. The cautery system of claim 18 , wherein the switch is a normally closed switch that is configured to permit the delivery of energy to the cautery tip when the handpiece is not disposed in the holder and is configured to prevent the delivery of energy to the cautery tip when the handpiece is disposed in the holder.

20. A cautery system, comprising:
an elongated handpiece;
a cautery tip extending distally from the handpiece;
an electrical unit configured to control delivery of energy to the cautery tip for treating tissue;
a spring disposed in direct contact with the electrical unit at least one button coupled t

Assignees

• Covidien Lp

Inventors

• Trivedi Amit
• Campanelli Thomas J
• Pedros Roberto

Classifications

• A61B2218/005

  using gas or vapor, e.g. for protection or purging · CPC title

• A61B2018/00958

  for switching between different working modes of the main function · CPC title

• A61B2018/00922

  by switching or controlling the treatment energy directly within the hand-piece · CPC title

• A61B2018/00589

  Coagulation · CPC title

• A61B2018/00595

  Cauterization · CPC title