JPS59155247A - Surgical operation tool - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a surgical instrument having a flexible front portion and a rotary blade that rotates at high speed at its leading edge.

Like a conventional ultrasonic scalpel, ultrasonic vibration energy is applied to the tip of the horn to crush the tissue, and physiological saline is supplied to the surgical instrument to emulsify it, and the emulsion is sucked out to the outside of the surgery using a suction device. However, in neurosurgery and other surgeries, it is impossible to remove tumors in narrow and deep areas and aspirate unnecessary tissue as a result of this because the horn of an ultrasonic scalpel is bendable and not flexible. there were.

The present invention has been made in view of the above circumstances, and uses a rotary blade connected to a DC motor etc. to rotate at high speed in order to crush tissue, and supports the rotary blade to apply nuclear force to the tissue. A coupling rod is provided that is flexible enough to be inserted into narrow and deep areas and that allows the rotary blade to move forward and backward a certain distance, and the outer cylinder is made of, for example, an optical fiber that transmits a YAG laser beam. It is made of a flexible material, and has a partition member interposed between the connecting rod and the outer cylinder to provide a supply channel through which a surgical cleaning solution such as saline to be supplied to the cutting edge passes, and unnecessary tissue after resection. It is constructed with features such as forming a discharge path for
The purpose of this invention is to provide a new surgical tool that is effective for resecting tumors in narrow and deep areas, particularly in brain surgery and other surgeries.

The present invention will be described below based on embodiments with reference to the drawings.

FIG. 1 is a sectional view of a main part showing a surgical tool according to the present invention;
FIG. 2 is a perspective view.

First, the rotary blade 1 is connected to a connecting rod 3 connected to a DC motor 2.
The stroke knob 6 is fitted into the hole 7a of the lower fitting part 7 of the coupling rod which is connected to the DC motor 2, and is fixed thereto. The cutting edge of the rotary blade is moved forward and backward by a certain distance in accordance with the length of the rotary blade and the length of the connecting rod. Various types of rotary blades as shown in FIGS. 3(1) to 3) are used.

In addition, this surgical tool is provided with a supply channel 8 for a surgical cleaning solution such as physiological saline, and a discharge channel 9 for discharging emulsions such as unnecessary tissues and blood removed during surgery. , a partition member 10 is interposed between the connecting rod 3 and the outer cylinder 5. Although the surgical cleaning solution is not shown,
The tissue is pumped out by the Zoyon pump, passes through the cheep 11, and is supplied to the surgical instrument from the front end of the supply channel 8 formed in the gap between the outer wall 5 and the partition member 10.
(not shown), the liquid is discharged to the outside from the tube 12 through a discharge path 9 formed between the coupling rod 3 and the partition member 100.

The surgical tool according to the present invention is not based on ultrasonic vibration energy like an ultrasonic scalpel, but rather uses the rotation of a rotary blade to cut tissue, so it has no selectivity for blood vessel resection; Since the connecting rod 3, the partition member 10, and the outer cylinder 5 that follow the 9-rotated blade, which is different from the horn in the sonic scalpel, are required to be made of flexible materials, the front part of the surgical instrument is It can be bent in any direction and is particularly effective for cutting tumors in narrow and deep areas. In order to fix the bent state, the outer cylinder can be further covered with a spiral-shaped outer cover or the like. In order to prevent bleeding due to blood vessel resection during surgery, the outer tube 5 is made of flexible optical fibers as necessary, and a YAG laser beam or the like is transmitted through this and irradiated onto the surgical instrument to coagulate the part to be resected. enable action. Furthermore, the coagulation mode of the electric scalpel can be connected to the distal end of the present surgical instrument to produce a similar hemostasis effect.

Since the tip of this surgical tool can be separated from the main body, only the tip can be made into a disposable type, but the overall structure is simple, so the manufacturing cost is low and the wear and tear is low. It is also easily possible to make it disposable.

Since the present invention is based on the above configuration, the rotary blade at the tip can be operated while the front part is bent, and it is possible to insert the blade into particularly narrow and deep areas to cut tissue. In addition, it is possible to supply physiological saline to the surgical field and to discharge excised unnecessary tissue at the same time as the surgery, making it extremely useful in neurosurgery and other surgeries.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a main part showing a surgical tool according to the present invention;
FIG. 2 is a perspective view of the same, and FIGS. 3 (1) and 3 (2) are explanatory views showing various aspects of the rotary blade. DESCRIPTION OF SYMBOLS 1... Rotating blade, 2... DC motor, 3... Connection rod, 5... Outer cylinder, 6... Stroke knob, 8... Supply path, 9... Discharge path, 10 ...Partition member. Patent issuer Mochida Pharmaceutical Co., Ltd. agent Patent attorney Masaaki Kai
(iv) C==Σko C-two=] (V) (Vi) (Vii) (Viii) Goyo "=]
(Top = Ko

Claims (1)

[Claims] It is equipped with a rotary blade that is supported on the tip of a rotatable connecting rod and protrudes from the tip of the outer cylinder and can move forward and backward a certain distance,
A gap on the outer wall side of the partition member interposed between the coupling rod and the outer cylinder is formed as a supply path for surgical cleaning fluid to the surgical instrument, and a gap on the coupling rod side of the partition member is used to discharge unnecessary tissue, etc. A surgical instrument, characterized in that the outer tube, the partition member, and the connecting rod are all made of a flexible material.