JPS6122971B2 - - Google Patents

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.

Conventionally, like an ultrasonic scalpel, ultrasonic vibration energy is applied to the tip of the horn to crush tissue, supply physiological saline to the surgical field to emulsify it, and the emulsion is sucked out to the surgical field using a suction device. However, in neurosurgery and other surgical operations, it has been 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. .

The present invention was made in view of such circumstances,
In order to crush the tissue, a rotary blade connected to a DC motor or the like to rotate at high speed is used, and a flexible blade is used to support the rotary blade and insert the blade into a narrow and deep part of the tissue. A connecting rod is provided that has flexibility and can move the rotary blade forward and backward a certain distance, and further,
For example, the outer cylinder is made of a flexible material such as optical fiber that transmits a YAG laser beam, and a partition member is interposed between the connecting rod and the outer cylinder so that it can be used for feeding raw food or the like to the cutting edge. It is constructed with features such as forming a supply channel through which surgical cleaning fluid passes and a drainage channel for unnecessary tissue after resection. The purpose is to provide a new surgical tool that is effective for resection of.

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 of a surgical tool according to the present invention, and FIG. 2 is a perspective view.

First, the rotary blade 1 is supported and fixed 4 on the tip of a coupling rod 3 connected to the DC motor 2, and protrudes from the tip 5a of an outer cylinder 5, and the stroke knob 6 is located below the coupling rod 3 connected to the DC motor 2. By being fitted into and parked in the hole 7a of the fitting portion 7, the cutting edge of the rotary blade can be moved forward or 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 are used as shown in FIGS.

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. In order to tighten the joint rod 3 and the outer cylinder 5
A partition member 10 is interposed between the two. Surgical cleaning fluid is pumped out by an irrigation pump (not shown) and is supplied to the surgical field through the tube 11 from the front end of the supply channel 8 formed in the gap between the outer wall 5 and the partition member 10. etc. are discharged from the tube 12 to the outside through a discharge passage 9 formed in the gap between the coupling rod 3 and the partition member 10 by a discharge pump (not shown).

The surgical instrument 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 excise tissue, so it has no selectivity for blood vessel ablation. Unlike the horn in , the connecting rod 3 following the rotary blade, the partition member 10, and the outer cylinder 5 are all required to be made of flexible materials, so the front part of the surgical instrument can be formed arbitrarily. It can be bent in the direction of , making it 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, if necessary, the outer cylinder 5 is made of a flexible optical fiber, through which YAG laser light or the like is transmitted and irradiated onto the surgical field to coagulate the part to be resected. is possible. Furthermore, the coagulation mode of the electric scalpel can be connected to the distal end of the present surgical tool to produce a similar hemostasis effect.

Since the tip of this surgical instrument can be separated from the main body, only the tip can be made into a disposable type, but since the overall structure is simple, the manufacturing cost is low, and the overall structure of this surgical instrument is It is also easily possible to use it as a 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 it into particularly narrow and deep areas to cut tissue, and it is also possible to supply physiological saline etc. to the surgical field and cut it. The removed unnecessary tissue can be removed simultaneously with the surgery, and is extremely useful in neurosurgery and other surgeries.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a main part of a surgical tool according to the present invention, FIG. 2 is a perspective view thereof, and FIGS. 3 to 3 are explanatory views showing various aspects of a rotary blade. 1... Rotating blade, 2... DC motor, 3... Connection rod, 5... External cylinder, 6... Stroke knob, 8...
Supply path, 9...Discharge path, 10...Partition member.

Claims (1)

[Claims] 1. An outer wall side of a partition member interposed between the coupling rod and the outer cylinder, comprising a rotary blade supported by the tip of a rotatable coupling rod and protruding from the tip of the outer cylinder so as to be able to advance and retreat a certain distance. A gap is formed as a supply path for a surgical cleaning solution to the surgical field, and a gap on the connecting rod side of the partition member is formed as a discharge path for unnecessary tissue, etc., and further, any of the outer cylinder, the partition member, and the connecting rod A surgical tool comprising a flexible material.