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Improvements in and relating to laparoscopic instruments

A resistor and controller technology, which is applied in the parts of surgical instruments, surgical instruments for pumping substances, and energy control of instruments, etc., can solve problems such as potential difference and discharge risk.

Inactive Publication Date: 2014-07-16
ALESI SURGICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention arises from the fact that unlike surgical instruments that connect a low voltage DC waveform or an AC waveform of opposite polarity to a patient, a surgical instrument or device that connects a high voltage DC waveform to a patient is capable of directly or indirectly storing charge, For example storing charge in a device or in the body of a person about to undergo surgery in much the same way as a capacitor stores charge, with the result that there is a risk of unwanted discharge due to the potential difference between the charged device or body and ground

Method used

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  • Improvements in and relating to laparoscopic instruments
  • Improvements in and relating to laparoscopic instruments
  • Improvements in and relating to laparoscopic instruments

Examples

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Embodiment Construction

[0021] first reference figure 1 , the ionization device shown at 1 generally comprises an insulating housing 2 comprising a safety circuit 2a for operating the ionization device 1 . The safety circuit 2a includes a direct current (DC) power battery 3 for powering a DC switching power supply DC to DC voltage converter 4 which increases the voltage to approximately 10 kilovolts (kV) and converts it to Applied to an active cable 5, on the free end of which there is a non-conductive strip or rod 6, from which the free end of the active cable 5 protrudes in the form of an output electrode 7. A return electrode 8 in the form of a conductive pad is connected to a return cable 9 to the battery 3, in use the electrodes 7 and 8 provide an ionization path between the two in the manner described in WO2011 / 010148.

[0022] The housing 2 is sufficiently insulated to prevent the possibility of the housing and its surroundings thereby indirectly establishing any significant electrical path w...

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Abstract

A DC driven ionisation apparatus is provided for ionising a local atmosphere in which a corporeal surgical or cosmetic procedure is to be performed, the ionisation apparatus including a safety circuit comprising detector means for detecting when a hazard condition exists, such as a short circuit or high charge level condition, a circuit controller for actuating switch means to turn the DC supply off and thereafter to cyclically reconnect and disconnect the DC supply until the hazard condition has been rectified, and re-set means for thereafter re-setting a continuous DC supply to the circuit until the next occurrence of a hazard condition or until the procedure is complete.

Description

technical field [0001] The present invention relates to laparoscopic instruments, for example ionizing instruments of the type described in WO2011 / 010148. Background technique [0002] Laparoscopic surgery, or "keyhole" surgery, involves a surgeon operating on a patient with instruments that are inserted into the patient's body but are operated by human hands or robotic controls located outside the patient's body. The surgeon typically utilizes an endoscope inserted at or near the surgical site to see what is going on, and to access the surgical site and provide space for the instruments, typically with an appropriate inert gas such as CO 2 ) is inflated to open a cavity in the patient's body. [0003] Many laparoscopic procedures involve the use of thermal cutting instruments, such as lasers and electrothermia devices, which cut and cauterize tissue by ablating, heating, freezing, etc. In some cases, the surgeon's view can be obscured by smoke, steam, or other mist, and i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03C3/68A61B18/00
CPCB03C3/68B03C2201/26A61B18/1233A61B2018/1266A61B2218/008B03C3/38A61B2018/00636A61B18/18A61B2018/00827
Inventor 佛朗西斯·奎库·艾格林·阿莫阿
Owner ALESI SURGICAL
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