Resecting device for living organism tissue utilizing ultrasonic vibrations

• US 5,047,043 A
• Filed: 12/07/1989
• Issued: 09/10/1991
• Est. Priority Date: 03/11/1986
• Status: Expired due to Term

• Current Assignee: Olympus Optical Corporation Limited (Olympus Corporation)
• Original Assignee: Olympus Optical Corporation Limited (Olympus Corporation)
• Inventors: Taguchi, Koji, Terayama, Toshiki, Hayashi, Masaaki, Karasawa, Hitoshi, Hatta, Shinji, Taguchi, Akihiro, Takayama, Syuichi, Nagasaki, Tatsuo, Kubota, Tetsumaru, Fujimori, Hiroyoshi, Negoro, Daisaku, Nakada, Akio, Hagino, Tadao, Kusunoki, Hiroyuki
• Primary Examiner(s): Thaler, Michael H.
• Application Number:
  US07/449,101
• Time in Patent Office: 642 Days
• Field of Search: 606/160, 606/161, 606/169, 606/171, 128/751, 128/752, 128/757, 128/758, 128/24 A, 604/22, 433/119, 30/85
• US Class Current: 606/169
• CPC Class Codes: A61B 17/1604 Chisels; Rongeurs; Punches; Stamps
• CPC Class Codes: A61B 17/22012 in direct contact with, or very close to, the obstruction or concrement for removing obstructions in blood vessels by laser A61B18/245
• CPC Class Codes: A61B 17/320016 Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes A61B10/0233, A61B17/29, A61B17/3207 take precedence
• CPC Class Codes: A61B 2017/22072 with an instrument channel, e.g. for replacing one instrument by the other in cannulas A61B17/3417
• CPC Class Codes: A61B 2017/320078 Tissue manipulating surface
• CPC Class Codes: A61B 2017/320088 with acoustic insulation, e.g. elements for damping vibrations between horn and surrounding sheath
• CPC Class Codes: A61B 2217/005 with suction drainage system

Abstract

A medical resecting device is disclosed in which, a living organism tissue is resected with ultrasonic vibrations while the corresponding body cavity is observed with an optical observation pipe. The resecting device includes an ultrasonic vibrator for generating ultrasonic vibrations, a horn connected to the vibrator, a probe connected to the front portion of the horn to transmit the ultrasonic vibrations generated by the vibrator, the probe being provided with a rod-like shaft and a distal end portion with a resecting blade, a power source unit for supplying a drive voltage to the vibrator, and an optical observation pipe having a guide hole in which the shaft of the probe is inserted.

Claims

1. A medical resecting device comprising:

ultrasonic vibration generating means for generating ultrasonic vibrations;

a horn coupled to said ultrasonic vibration generating means, said horn having a front portion;

probe means, coupled to said front portion of said horn, for transmitting ultrasonic vibrations generated by said ultrasonic vibration generating means, said probe means including a rod-like shaft portion and a distal end portion, said distal end portion extending from a tip end of said rod-like shaft portion and including two prongs spaced from each other and extending from said tip end of the rod-like shaft portion, and a resecting blade connected between said prongs, at least a cutting end portion of the resecting blade being at an acute angle with respect to a longitudinal axis of said rod-like shaft portion, said angle being in a given plane and said resecting blade being wider than, in a plane perpendicular to said given plane and parallel to the longitudinal axis, said rod-like shaft portion, said cutting end portion of the resecting blade terminating in an arc-shaped, convex edge facing generally along said longitudinal axis; and

power source means for supplying a drive voltage to said ultrasonic vibration generating means;

wherein said probe means has a crank-shaped portion formed between said rod-like shaft portion and said distal end portion, so that the probe means at the tip end of said rod-like shaft portion is bent with the crank-shaped portion in one direction, and said resecting blade is directed in the opposite direction.

2. The device according to claim 1, wherein said rod-like shaft portion, said distal end portion, and said resecting blade are integrally formed as a single unit.

3. The device according to claim 1, further comprising:

an optical observation tube having a guide hole into which said rod-like shaft portion of said probe is inserted.

4. The device according to claim 1, wherein the prongs extend from said tip end in a direction generally opposite to that in which the rod-like shaft portion extends from its said tip end.

5. A medical resecting device comprising:

ultrasonic vibration generating means for generating ultrasonic vibrations;

a horn coupled to said ultrasonic vibration generating means, said horn having a front portion;

probe means, coupled to said front portion of said horn, for transmitting ultrasonic vibrations generated by said ultrasonic vibration generating means, said probe means including a rod-like shaft portion and a distal end portion, said distal end portion extending from a tip end of said rod-like shaft portion and including two prongs spaced from each other and extending from said tip end of the rod-like shaft portion, and a resecting blade connected between said prongs, at least a cutting end portion of the resecting blade being at an acute angle with respect to a longitudinal axis of said rod-like shaft portion, said angle being in a given plane and said resecting blade being wider than, in a plane perpendicular to said given plane and parallel to the longitudinal axis, said rod-like shaft portion, said cutting end portion of the resecting blade terminating in an arc-shaped, convex edge facing generally along said longitudinal axis, wherein said rod-like shaft portion, said distal end portion, and said resecting blade are integrally formed as a single unit;

power source means for supplying a drive voltage to said ultrasonic vibration generating means;

wherein said probe means has a crank-shaped portion formed between said rod-like shaft portion and said distal end portion, so that the probe means at the tip end of said rod-like shaft portion is bent with the crank-shaped portion in one direction, and said resecting blade is directed in the opposite direction, said prongs extending from said tip end in a direction generally opposite to that in which the rod-like shaft portion extends from its said tip end; and

an optical observation tube having a guide hole into which said rod-like shaft portion of said probe is inserted.