Cautery apparatus

Patent metadata

Field	Value
Publication number	US-10278759-B2
Application number	US-201514615763-A
Country	US
Kind code	B2
Filing date	Feb 6, 2015
Priority date	Nov 6, 2014
Publication date	May 7, 2019
Grant date	May 7, 2019

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 an entire length of the cautery tip from a proximal open end to a distal open 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 the tip at the distal open end.

First claim

What is claimed is:

1. A cautery device 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, the tip having a proximal end, a distal end, and defining a channel having a proximal end and a distal end;
a gas supply connection extending from the handpiece for supplying gas to the cautery tip, the gas supply connection fluidly coupled to the channel of the cautery tip;
a carbon dioxide gas source connected to the gas supply connection and configured to supply carbon dioxide gas to the cautery tip;
an electric supply connection extending from the proximal end of the handpiece for supplying electricity to the cautery tip, the electric supply connection electrically coupled to the cautery tip,
wherein the carbon dioxide gas supplied to the cautery tip is introduced to the proximal end of the channel and exits the cautery tip adjacent the distal end of the channel;
a switch disposed within the handpiece and configured to move between an open configuration to prevent the supply of electricity to the cautery tip and a closed configuration to permit the supply of electricity to the cautery tip;
a valve having a stem portion disposed within the handpiece and in vertical alignment with the switch, the valve configured to move between a closed configuration wherein the stem portion prevents the supply of the carbon dioxide to the cautery tip and an open configuration wherein the stem portion is configured to move within the handpiece to adjust the supply of the carbon dioxide to the cautery tip; and
a spring disposed within the handpiece between the switch and a distal end of the stem portion, wherein the distal end of the stem portion is vertically spaced from the spring when the valve is in the closed configuration, and the distal end of the stem portion compresses the spring when the valve is in the open configuration such that the spring moves the switch to the closed configuration and is configured to maintain the switch in the closed configuration while the stem portion is moving within the handpiece to adjust the supply of the carbon dioxide gas to the cautery tip while the valve is in the open configuration.

2. The cautery device according to claim 1 , wherein the valve is movable within the handpiece by movement of a button extending from the handpiece.

3. The cautery device according to claim 2 , wherein the valve is configured as a normally-closed valve that opens in response to movement of the button.

4. The cautery device according to claim 3 , wherein the button has a range of motion that progressively opens the valve as a function of distance traveled by the button.

5. The cautery device according to claim 1 , wherein:
the gas supply connection and the electric supply connection are integrally formed in a multilumen tube.

6. A cautery device, consisting of:
an elongated handpiece extending axially from a proximal end to a distal end;
a cautery tip extending from the distal end of the handpiece, the tip having a proximal end, a distal end, and defining a channel having a proximal end and a distal end;
a gas supply connection extending from the handpiece for supplying gas to the cautery tip, the gas supply connection fluidly coupled to the channel of the cautery tip;
a carbon dioxide gas source connected to the gas supply connection and configured to supply carbon dioxide gas to the cautery tip;
a valve train fluidly coupled between the cautery tip and the gas supply connection, the valve train including a valve having a stem portion disposed within the handpiece, the valve configured to move between a closed configuration wherein the stem portion prevents the supply of the carbon dioxide gas to the cautery tip and an open configuration wherein the stem portion is configured to move within the handpiece to adjust the supply of the carbon dioxide to the cautery tip;
an electric supply connection extending from the proximal end of the handpiece for supplying electricity to the cautery tip, the electric supply connection electrically coupled to the cautery tip;
an electrical unit disposed within the handpiece and electrically coupled between the cautery tip and the electric supply connection, the electrical unit including a switch disposed in vertical alignment with the stem portion and configured to move between an open configuration to prevent the supply of electricity to the cautery tip and a closed configuration to permit the supply of electricity to the cautery tip,
wherein the carbon dioxide gas supplied to the cautery tip is introduced to the proximal end of the channel and exits the cautery tip adjacent the distal end of the channel; and
a spring disposed within the handpiece between the switch and a distal end of the stem portion, wherein the distal end of the stem portion is vertically spaced from the spring when the valve is in the closed configuration, and the distal end of the stem portion compresses the spring when the valve is in the open configuration such that the spring moves the switch to the closed configuration and is configured to maintain the switch in the closed configuration while the stem portion is moving within the handpiece to adjust the supply of the carbon dioxide gas to the cautery tip while the valve is in the open configuration.

7. A cautery device 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, the cautery tip having a proximal end and a distal end;
an electric supply connection extending from the proximal end of the handpiece for supplying electricity to the cautery tip, the electric supply connection electrically coupled to the cautery tip;
a carbon dioxide gas source;
a gas supply connection extending from the handpiece to the gas source for supplying carbon dioxide gas from the gas source to the cautery tip, the gas supply connection fluidly coupled to a channel defined at least partially through the cautery tip;
a valve having a stem portion disposed within the handpiece and configured to move between a closed configuration wherein the stem portion prevents the supply of the carbon dioxide to the cautery tip and an open configuration wherein the stem portion is configured to move within the handpiece to adjust the supply of the carbon dioxide to the cautery tip;
a common button on the handpiece that both 1) moves the stem portion within the handpiece to actuate a switch disposed within the handpiece in vertical alignment with the stem portion to switch the supply of electricity to the cautery tip on and off and 2) maintains the supply of electricity to the cautery tip switched on while the valve is in the open configuration by engaging a spring with the stem portion to compress the spring against the switch while moving the stem portion within the handpiece to adjust the supply of carbon dioxide gas from the gas source to the cautery tip via the valve, wherein the gas source is configured to supply carbon dioxide gas adjacent the distal end of the cautery tip when the cautery tip is supplied electricity.

8. The cautery device according to claim 7 , wherein:
the common button has a range of motion, and a flow rate of carbon dioxide gas is adjustable based on the position of the common button in the range of motion.

9. The cautery device according to claim 7 , further comprising:
a multilumen tube extending from the proximal end of the handpiece, the gas supply connection and the electric supply connection extending along the entire length of the multilumen tube.

10. The cautery device according to claim 7 , wherein:
when the supply of electricity to the c

Assignees

• Covidien Lp

Inventors

• Trivedi Amit
• Campanelli Thomas J
• Pedros Roberto

Classifications

• A61B2018/048

  in gaseous form · CPC title

• A61B2018/00595

  Cauterization · CPC title

• A61B2018/00589

  Coagulation · CPC title

• A61B2018/00922

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

• A61B2018/00958

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