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Medical treatment instrument

  • US 7,329,257 B2
  • Filed: 09/03/2003
  • Issued: 02/12/2008
  • Est. Priority Date: 01/25/1999
  • Status: Expired due to Term
First Claim
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1. A medical treatment instrument used for coagulating and cutting a patient'"'"'s body tissue, the medical treatment instrument comprising:

  • a treatment portion, which is arranged at a tip of the treatment instrument, and which comprises a grasp portion including a pair of grasp members, which are openable and closeable with respect to each other, for grasping the patient'"'"'s body tissue;

    an operating portion which is arranged at a proximal end of the treatment instrument, and which is operable to open and close the pair of grasp members;

    a heat generating portion which is provided at a first grasp member of the pair of grasp members, and which generates heat in accordance with current supplied thereto; and

    a cutting member which is disposed at the first grasp portion in contact with the heat generating portion and projecting toward a second grasp member of the pair of grasp members, and which is heated by the heat generating portion to cut the patient'"'"'s body tissue grasped between the grasp members;

    wherein the cutting member is shaped so as to be capable of cutting the patient'"'"'s body tissue only when the heat generating portion is activated.

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