JP6769600B2 - Surgical microscope device - Google Patents

Description

The present invention relates to a surgical microscope device used by covering it with a drape.

Surgical microscopes used in neurosurgery, etc., have a parallel link mechanism that extends vertically on the stand body installed on the floor, and are suspended from the upper end of the parallel link mechanism to the tip of the upper arm that extends horizontally. It is supported in the state of being struck.

At least the operating microscope and the upper arm that supports it are covered with a drape to ensure sterility. Since the drape obstructs the view of the doctor or assistant when it hangs down, the air inside the drape is sucked by the exhaust pump built in the upper arm and brought into close contact with the operating microscope or the like (see, for example, Patent Document 1). ).

Japanese Patent No. 2988980

However, in such a related technique, since the exhaust pump is housed in the upper arm, the distance between the exhaust pump and the operating microscope is relatively short, and the exhaust pump is used by the doctor who is observing the operating microscope. I'm worried about noise.

The present invention has been made focusing on such a related technique, and an object of the present invention is to provide a surgical microscope device in which noise of an exhaust pump is not a concern.

According to the first aspect of the present invention, the stand body installed on the floor includes two parallel front and rear arms and two parallel upper and lower arms of each arm. A parallel link mechanism in which the connecting portion is rotatably supported is mounted rotatably around a rotation shaft set in the middle of the front arm, and the upper side of the parallel link mechanism is formed by a part of the upper arm. A surgical microscope is supported at the anterior end extending forward beyond the parallel link mechanism of the upper arm, and the lower side of the parallel link mechanism is formed by a part of the lower arm and rearward beyond the parallel link mechanism of the lower arm. A surgical microscope device in which a counter weight is supported at the extended rear end and at least the operating microscope and the upper arm are covered with a drape. The upper arm and the rear arm have a hollow structure and are located on the tip side of the upper arm. An intake port is formed, and a tubular extension that extends downward beyond the connection with the lower arm and has an open lower end is formed at the lower end of the rear arm to house the exhaust pump inside, and the exhaust pump is housed from the extension to the rear. It is characterized by having a structure that allows ventilation in the range from the arm and the upper arm to the intake port.

According to the second aspect of the present invention, the lower end of the rear arm is connected to the surface of the lower arm on the stand body side, and the extension portion is located between the lower arm and the stand body.

According to the first aspect of the present invention, since the exhaust pump is housed in the extension portion further below the lower end of the rear arm, the distance from the operating microscope supported by the front end of the upper arm becomes long, and the operating microscope can be mounted. The observing doctor does not mind the noise of the exhaust pump.

According to the second aspect of the present invention, since the extension portion incorporating the exhaust pump is located between the lower arm and the stand body, the presence of the extension portion is inconspicuous.

A side view showing a surgical microscope device. A perspective view showing the vicinity of the front end of the upper arm. The perspective view which shows the vicinity of the connection part of the upper arm and the rear arm. FIG. 3 is a cross-sectional view taken along the line SA-SA indicated by Nakaya. FIG. 1 is a cross-sectional view taken along the line SB-SB shown by the middle arrow.

A preferred embodiment of the present invention will be described with reference to FIGS. 1 to 5. In the above and below, the front-back and left-right directions are as shown in FIGS. 1 and 3.

The stand body 1 installed on the floor of the operating room has a structure in which the front arm 2 and the rear arm 3 and the upper arm 4 and the lower arm 5 are rotatably supported by connecting portions 6 to 9, respectively. Parallel link mechanism A is supported. The parallel link mechanism A is supported by the stand body 1 on a rotation shaft 10 set in the middle of the front arm 2.

The upper side of the parallel link mechanism A is formed by a part of the upper arm 4, and the upper arm 4 extends forward as it is. The lower end of the tip arm 11 is pivotally supported at the front end of the upper arm 4, and the operating microscope 12 is supported below the lower end of the tip arm 11 via a hanging arm 13.

The lower side of the parallel link mechanism A is formed by a part of the lower arm 5, and the lower arm 5 extends rearward as it is. A counterweight C is provided at the rear end of the lower arm 5.

By deforming such a parallel link mechanism A, the operating microscope 12 can be moved back and forth and up and down, and the weight balance by the counterweight C causes the operating microscope 12 to stop in the air at the moved destination.

The lower end of the short base end arm 14 is pivotally supported at the connecting portion 6 of the upper arm 4 with respect to the front arm 2. The front arm 2 has a square cylinder shape extending vertically and is provided with another parallel link mechanism (not shown) inside. The proximal arm 14 is associated with this other parallel link mechanism (not shown) and is always kept vertical. The base end arm 14 and the upper ends of the tip end arm 11 are connected to each other by a sub arm 15. As a result, the vertical state of the tip arm 11 is always maintained no matter how the parallel link mechanism A is deformed.

The upper arm 4 is formed of a metal cylinder and is curved so as to be convex upward as a whole. The reason why it is curved upward is to secure a work space on the lower side. Both ends of the upper arm 4 are formed of hollow members 16 and 17 made of cast metal. The upper arm 4 is hollow as a whole with these hollow members 16 and 17 included as a structure.

An intake port 18 is formed in the hollow member 16 at the front end of the upper arm 4. The portion of the hollow member 17 on the rear side behind the base end arm 14 is detachable as a cover 19 as a separate part for maintenance.

The rear arm 3 also has a tubular hollow structure extending vertically, and the connecting portion 9 between the upper end of the rear arm 3 and the hollow member 17 which is the rear end of the upper arm 4 has a vent as shown in FIG. 20 is formed. Therefore, although the connecting portion 9 is rotatable, the internal space of the rear arm 3 and the upper arm 4 (hollow member 17) is in a state of communicating with each other via the vent 20.

The lower part of the rear arm 3 is connected to the inner surface of the lower arm 5 (on the stand body 1 side). Therefore, the connecting portion 8 between the lower part of the rear arm 3 and the lower arm 5 is located in the space S between the lower arm 5 and the stand body 1.

An extension portion 21 extending downward beyond the connecting portion 8 is formed at the lower end of the rear arm 3. The extension portion 21 has a diameter larger than that of the rear arm 3 and has a tubular shape with the lower side open, and the exhaust pump 22 is housed inside. The switch operation of the exhaust pump 22 is performed by a control panel (not shown).

The connecting portion 8 rotates integrally with the rear arm 3, and the connecting portion 8 is formed with a ventilation passage 23 that communicates the inside of the rear arm 3 with the extension portion 21. Therefore, the entire range from the extension portion 21 to the intake port 18 via the rear arm 3 and the upper arm 4 is configured as one pipe structure capable of ventilating.

The stand body 1 is covered with a drape P for sterilizing the necessary portion including the upper arm 4 from the operating microscope 12. In particular, if the drape P of the portion covering the upper arm 4 and the operating microscope 12 hangs downward, it obstructs the field of view of the doctor, assistant, or the like, so it is necessary to bring the drape P into close contact with the upper arm 4 or the operating microscope 12.

Therefore, the air E in the drape P is sucked from the intake port 18 at the tip by using the upper arm 4 and the rear arm 3 of the hollow structure as a passage. The suction is performed by the exhaust pump 22 provided in the extension portion 21 at the lower end of the rear arm 3. When the exhaust pump 22 is operated, the inside of the rear arm 3 is decompressed, the inside of the upper arm 4 is decompressed, the air E in the drape P is sucked from the intake port 18 at the tip, and the sucked air E is the extension portion 21. It is discharged from the lower end to the outside of the drape P.

Since air E is sucked from the intake port 18 at the front end of the upper arm 4, the drape P near the operating microscope 12 and the tip of the upper arm 4 is surely sucked into a close contact state, blocking the field of view of people in the vicinity. Absent.

Moreover, since the exhaust pump 22 is housed in the extension portion 21 located further below the lower end of the rear arm 3, and is far from the operating microscope 12 supported by the front end of the upper arm 4, the operating microscope 12 The noise of the exhaust pump 22 does not easily reach the vicinity, and the doctor observing the operating microscope 12 can concentrate on the operation.

Further, since the extension portion 21 incorporating the exhaust pump 22 is located between the lower arm 5 and the stand body 1, the presence of the extension portion 21 is inconspicuous.

1 Stand body 2 Front arm 3 Rear arm 4 Upper arm 5 Lower arm 6-9 Connection part 12 Operating microscope 18 Intake port 21 Extension part 22 Exhaust pump A Parallel link mechanism E Air P Drape S space

Claims (2)

Two parallel front and rear arms and two parallel upper and lower arms are included with respect to the stand body installed on the floor, and the connecting portion of each arm is rotatably supported in parallel. The link mechanism is rotatably attached around the rotation axis set in the middle of the front arm.
The upper side of the parallel link mechanism is formed by a part of the upper arm, and a surgical microscope is supported at the anterior end extending forward beyond the parallel link mechanism of the upper arm.
The lower side of the parallel link mechanism is formed by a part of the lower arm, and a counterweight is supported at the rear end extending rearward beyond the parallel link mechanism of the lower arm.
An operating microscope device in which at least the operating microscope and the upper arm are covered with a drape.
The upper arm and the rear arm have a hollow structure to form an intake port on the front end side of the upper arm, and a tubular extension extending downward beyond the connecting portion with the lower arm at the lower end of the rear arm and having the lower end open. A surgical microscope device characterized in that a portion is formed and an exhaust pump is housed inside, and the range from the extension portion to the intake port via the rear arm and the upper arm is made capable of ventilation. The surgical microscope device according to claim 1, wherein the lower end of the rear arm is connected to a surface of the lower arm on the stand body side, and the extension portion is located between the lower arm and the stand body.

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