JPH0243501B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention enables an optical viewing tube to be inserted into an insertion shaft into which an electric drill for resecting cartilage, etc. in a joint cavity is inserted, so that not only observation but also cutting operations can be performed. The present invention relates to an intrabody cavity resection device with improved operational functionality.

In recent years, optical viewing tubes have been widely used as a means for observing and diagnosing affected areas by being inserted into the abdominal cavity or joint cavity. This optical viewing tube is widely used for observation during treatment using a treatment tool.

FIG. 1 shows an optical viewing tube 1 and a drill 2 that are conventionally inserted and used separately when removing cartilage that has protruded into a bone within a joint cavity.

The optical viewing tube 1 has an elongated insertion section 3 having an illumination light output end for observation illumination and an observation optical system at its tip.
The proximal end of the insertion section 3 is connected to the eyepiece section 4, which is formed with an eyepiece optical system disposed at the other end.
It consists of a grip part 5 having a.

A light guide base portion 6 is provided on the side of the grip portion 5.
is formed and connected via a light source 7 for illumination and a light guide cable 8 for transmitting illumination light, and the illumination light transmitted by this light guide cable 8 is transmitted to the light inserted into the insertion section 3. The guide allows irradiation from the illumination light emitting end at the tip.

When the optical viewing tube 1 is inserted into the joint cavity,
Guided by the insertion of the trocar 9, it is inserted through the trocar 9 and into the joint cavity. An injection port 10 is provided on the proximal side of the trocar 9, and an irrigation fluid container 12 is connected to the trocar 9 via a tube 11 so that irrigation fluid can be supplied to the portion to be cut or excised by the drill 2. A perfusate extraction tube 13 is inserted into the lower part of the vicinity of the affected area so that the connected cartilage grains and the like that have been cut or excised can be taken out together with the perfusate.

On the other hand, the drill 2 for treatment such as cutting or excision
The drill shaft 16 includes a motor grip part 14 on the hand side that houses a drive motor, and a drill shaft 16 that is connected to the rotating shaft of the motor and has, for example, an umbrella-shaped cutting blade 15 at its tip. When this drill shaft 16 is inserted into the joint, it will be guided by the insertion of the trocar 17 as in the case of the optical viewing tube 1 described above.

Conventionally, the optical viewing tube 1 for observation and the drill 2 for cutting and other treatments are inserted separately, which doubles the pain for the patient and doubles the insertion operations for the operator. At the same time, in the optical viewing tube 1,
There was a problem in that it became difficult to operate the drill 2 while observing.

This invention has been made in view of the above-mentioned points, and allows observation of the inside of the body cavity and cutting or resection to be performed through the same insertion section, making it easy to observe the target region, and facilitating the cutting or resection operation. The speculum can be freely inserted into and removed from the channel of the insertion shaft of the drill device, and as a result, during surgery when the insertion shaft is inserted into the body cavity,
It is possible to replace the insertion shaft with a type of endoscope with a different viewing direction without having to remove it from the body cavity, which allows for more accurate observation of the body cavity and allows the patient to see the endoscope more easily. There is no pain every time you change the mirror, and the observation range of the endoscope is less likely to be scratched by the drill shaft or cutting edge.
Another object of the present invention is to provide an intrabody cavity resection device that can use either a rigid or flexible endoscope to be inserted through the channel of the insertion shaft.

In order to achieve the above object, the present invention includes an insertion shaft to be inserted into a body cavity, and an integrated operation section at the rear of the insertion shaft, and the insertion shaft has a drill cutting edge at its tip. While rotatably inserting a drill shaft whose end is connected to a motor, an endoscope is inserted and removed from the insertion axis parallel to the drill shaft and at a predetermined distance so that the field of view is not obstructed by the drill shaft. A linear channel is provided from the insertion port to the protrusion port for freely attaching the device.

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

FIG. 2 shows a first embodiment of the invention. In the same figure, the irrigation fluid inlet 21 provided on the side near the hand
The trocar 23 for guiding the insertion, through which perfusion fluid is irrigated to the distal end by the operation of the comb lever 22, has an optical viewing tube 1 having the above-mentioned configuration in a channel provided on the insertion shaft 25 of the drill device for treatment. It is configured so that it can be inserted and removed freely.

That is, a drill shaft 27 having, for example, an umbrella-shaped cutting blade 26 attached to its tip, and a flexible drive shaft 28 connected to the proximal rear end of the drill shaft 27 are inserted into the insertion shaft 25 in a curved manner. The rear end of the drive shaft 28 is connected to a rotating shaft of a drive motor 30 housed in a gripping operation part 29 that protrudes from the side surface of the proximal end of the insertion shaft 25 so as to be easily gripped. The rotation by the motor 30 drives these drive shafts 28 and drill shafts 27.
It is configured to be transmitted to the cutting blade 26 at the tip via.

A battery 31 is housed in the gripping operation section 29 as a power source for the rotational drive motor 30, and a drive switch 3 is installed on the side of the gripping operation section 29 so that the motor 30 can be rotated with the gripping hand.
2 is provided.

In the insertion shaft 25 of the drill device for intrabody cavity treatment, into which the drill shaft 27 with the cutting blade 26 attached to the tip is inserted, there is an insertion section 3 of the optical viewing tube 1 having the same configuration as described above in parallel with the drill shaft 27.
There is a channel that can be inserted and removed freely. The channel is provided at a distance from the drill shaft 27 as shown in FIGS. 2 and 3 so that the observation field of the optical viewing tube 1 is not obstructed by the drill shaft 27 or the cutting edge 26. Further, this channel is formed in a straight line from the insertion port to the protrusion port of the insertion shaft 25, so that a flexible endoscope can be attached in addition to the optical viewing tube (rigid endoscope) shown in the example. It's summery.

When cutting or excising cartilage or the like as described above with the drill device for intrabody cavity treatment of this embodiment configured as described above, the trocar 23 is inserted into the joint cavity, and then the trocar 23 is inserted into the trocar 23. The insertion shaft 25 of this drill device is inserted, and the optical viewing tube 1 for observation is further inserted into the channel within this insertion shaft 25 and mounted. In this case, the operator
The cutting blade 26 is configured so that it can be observed at a position in front of the field of view of the observation optical system disposed at the tip of the insertion section 3 of the optical viewing tube 1 attached to the optical viewing tube 1. Therefore, the state of cutting by the cutting blade 26 can be observed while observing the affected area with the cutting blade 26, and at the same time, cutting can be performed using the treatment drill device held.

In this way, the operator can perform observation and treatment operations using the drill much more conveniently than in the case of the conventional apparatus in which the optical viewing tube 1 and the drill 2 are inserted and operated separately. Therefore, there are no mistakes in the procedure, which is beneficial, and the number of insertion points is reduced, which reduces pain for the patient.

The second embodiment shown in FIG. 3 is similar to the first embodiment shown in FIG.
An external power source is used in place of the motor drive battery 31 housed in the grip operation section 29 in the embodiment.

That is, in this embodiment, an electric cord 41 for supplying electric power to drive the motor 30 is attached, and the plug at the end of the electric cord 41 is configured to be connected to an external commercial AC power source. ing. In this case, the motor 42 used is one that operates on alternating current. Other than this, please refer to the above 1.
This is similar to the example.

In the second embodiment described above, the external power source connected to the electric cord 41 is not limited to an AC power source, but can also be used by connecting to a DC power source in which AC is converted to DC.

Although the case where treatment is performed by inserting the device into a joint cavity has been described, it goes without saying that it can also be used by inserting it into other parts.

Furthermore, it goes without saying that the drill blade is not limited to the cutting blade 26.

As described above, according to the present invention, observation inside the body cavity and cutting or resection can be performed through the same insertion section, making it easy to observe the target region and making the cutting or resection operation easy. It can be inserted into and removed from the channel of the insertion shaft of the drill device, and as a result, during surgery when the insertion shaft is inserted into the body cavity, it can be inserted into the channel of the insertion shaft of the drill device without removing it from the body cavity. It is possible to replace the endoscope with another endoscope, which makes it possible to observe the inside of the body cavity more accurately, and the patient does not feel pain each time the endoscope is changed. The endoscope has the advantage that it is difficult to be knocked out by the user, and it is possible to use either a hard or flexible endoscope to be inserted through the channel of the insertion shaft.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a conventional device inserted into a joint cavity for treatment using a drill and its appearance;
FIGS. 2 and 3 relate to the present invention; FIG. 2 is a front view showing a first embodiment in which a trocar is cut, and FIG. 3 is a front view showing a second embodiment in which a trocar is cut. DESCRIPTION OF SYMBOLS 1... Optical viewing tube, 3... Insertion part, 4... Eyepiece part, 21... Irrigation fluid inlet, 22... Cottle lever, 23... Trocar, 25... Insertion shaft, 26
...Cutting blade, 27...Drill shaft, 28...
Drive shaft, 29...Gripping operation unit, 30...Motor,
31...Battery, 32...Drive switch, 41
……Electrical cord.

Claims (1)

[Claims] 1. A drill shaft that is equipped with an insertion shaft that is inserted into a body cavity, is provided with an integrated operating section at the rear of the insertion shaft, and has a drill tip at its tip and whose rear end is connected to a motor. The endoscope is rotatably inserted through the endoscope, and protrudes from an insertion opening into which the endoscope is inserted and withdrawn from the insertion shaft parallel to the drill shaft and at a predetermined distance so that the field of view is not obstructed by the drill shaft. An intrabody cavity resection device characterized by having a linear channel extending to the mouth.