JP2018134353A - Drape exhaust structure of surgical microscope apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drape exhaust structure of a surgical microscope apparatus, which can reduce the influence of a suction noise on a doctor during surgery.SOLUTION: The inside of a drape P continues to be sucked in at a first exhaust speed A during starting time T2 including at least adhesion time T1, after exhaust pump means 17 is started. Thus, the drape P can be reliably put into an adhesion state. Since the inside of the drape P is sucked in at a second exhaust speed B lower than the first exhaust speed A after the lapse of the starting time T2, a suction noise becomes low enough to be ignored by a doctor.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a drape exhaust structure for a surgical microscope apparatus.

  A surgical microscope used in neurosurgery or the like is used while being supported by the distal end of a lateral arm that extends laterally from the upper part of a stand body installed on a floor. At least the surgical microscope and the distal end side of the lateral arm that supports it are covered with a drape in order to make it sterile.

  When the drape hangs down, it obstructs the view of the doctor and assistant. Therefore, the air inside the drape is sucked by the exhaust pump means installed in the stand body to bring the drape into close contact with the surgical microscope and the lateral arm. The exhaust pump means installed in the stand main body is set to a relatively high exhaust speed in order to make the drape come into close contact with it quickly after starting (see, for example, Patent Document 1).

Japanese Patent No. 2898980

  However, in such a conventional technique, since the exhaust speed of the exhaust pump means is set to be relatively high, a large intake noise is generated when the exhaust pump means is operated. Since this inhalation noise is generated throughout the operation, the doctor during the operation is worried about the inhalation noise.

  The present invention has been made paying attention to such a conventional technique, and an object thereof is to provide a drape exhaust structure of a surgical microscope apparatus capable of reducing the influence of inhalation noise on a doctor during surgery. .

  According to the first technical aspect of the present invention, a lateral arm extending in the lateral direction from the upper portion of the stand body installed on the floor is formed, and the surgical microscope is supported at the distal end of the lateral arm, and at least the surgical microscope and A drape exhaust structure for a surgical microscope apparatus in which the distal end side of the horizontal arm is covered with a drape, and the air in the drape is exhausted by an exhaust pump means assembled to the stand body so that the drape is brought into close contact with the surgical microscope and the horizontal arm. The pump means is preset with a start time that is longer than the contact time required for the drape to contact after the exhaust pump means is started and continues to operate at the first exhaust speed, and based on the start time. A control unit for controlling the exhaust speed of the exhaust pump means is provided, and the control unit operates the exhaust pump means at the first exhaust speed for the start time. After the start-up time has elapsed, characterized in that actuating the exhaust pump means lower than the first exhaust speed second exhaust speed.

  According to the second technical aspect of the present invention, the second exhaust speed is not more than half of the first exhaust speed.

  According to the third technical aspect of the present invention, the surgical microscope apparatus has a rotating shaft in which a parallel link mechanism including two parallel forearms and a rear arm is set in the middle of the front arm. It is attached to the center so that it can tilt forward and backward, and the upper part of the parallel link mechanism is formed by a proximal end portion of a lateral arm extending forward, and a surgical microscope is supported on the distal end side of the lateral arm, and the lateral arm is a hollow structure In this structure, an intake port is formed at the distal end side of the lateral arm and a connection port is formed at the base end, and the exhaust pump means has an intake pipe inserted into the connection port at the upper portion and the exhaust port. It is characterized by being attached to either the rear arm or the front arm of the parallel link mechanism.

  According to a fourth technical aspect of the present invention, the exhaust pump means is attached to the rear arm.

  According to a fifth technical aspect of the present invention, the peripheral portion of the connection port at the base end portion of the lateral arm is detachable as a cover.

  According to the first technical aspect of the present invention, since the inside of the drape is continuously sucked at the first exhaust speed for at least the start time including the close contact time after the exhaust pump means is started, the drape is securely attached. Can be. After the start-up time has elapsed, the inside of the drape is sucked at a second exhaust speed that is lower than the first exhaust speed. Although it may be switched to the second exhaust speed immediately after the contact time elapses, there may be an unexpected factor that delays the contact of the drape on the drape itself or the suction structure. You may switch to The drape is already in a close contact state due to suction during the start time, and the second exhaust speed only needs to maintain the close contact state of the drape, so it is set lower than the first exhaust speed. During operation at the second exhaust speed, since the exhaust speed is low, the intake noise generated is low and the doctor is not concerned.

  According to the second technical aspect of the present invention, since the second exhaust speed is less than or equal to half of the first exhaust speed, the intake noise is also reduced to less than half and the intake noise is surely not bothered.

  According to the third technical aspect of the present invention, since the exhaust pump means is attached to either the rear arm or the front arm of the parallel link mechanism and exposed to the outside, the stand main body is used for repair or maintenance. Thus, the work can be performed by removing the exhaust pump means, and maintenance work is easy.

  According to the fourth aspect of the present invention, since the exhaust pump means is attached to the rear arm, the weight of the exhaust pump means acts in a direction to offset the weight of the surgical microscope, and the overall weight balance of the stand body The counterweight for taking up can be downsized.

  According to the feature of claim 5, since the peripheral portion of the connection port at the base end of the lateral arm is removable as a cover, the intake pipe of the exhaust pump means is inserted in advance into the connection port of the cover, By attaching the exhaust pump means at the same time as attaching the cover, the operation of inserting the intake pipe into the lateral arm can be easily performed.

The side view which shows the surgical microscope apparatus which concerns on embodiment of this invention. The perspective view which shows the attachment state of an exhaust pump means. The perspective view which shows the front-end | tip vicinity of a horizontal arm. The graph which shows the relationship between exhaust speed and time.

  A preferred embodiment of the present invention will be described with reference to FIGS. In the above and below, the front-rear direction is as described in FIG.

  The stand main body 1 is for hanging the surgical microscope 2 in the operating room. A vertical parallel link mechanism R including a front arm 3 and a rear arm 4 is supported on the stand body 1 so as to be tiltable back and forth around a rotating shaft 5 set in the middle of the front arm 4.

  A counterweight W is provided below the parallel link mechanism R. A lateral arm 6 extends from the upper part of the parallel link mechanism R toward the front. The lower end of the distal arm 7 is pivotally supported at the distal end of the lateral arm 6, and the surgical microscope 2 is supported below the suspended arm 8 via the suspension arm 8.

  The lower end of the proximal arm 10 is pivotally supported on the pivot point 9 of the horizontal arm 6 with respect to the front arm 3. The proximal arm 10 is always kept vertical by another parallel link mechanism (not shown) in the forearm 3. The upper ends of the proximal arm 10 and the distal arm 7 are connected by a sub arm 11. As a result, the vertical state of the distal arm 7 is maintained even when the horizontal arm 6 is pivoted up and down about the pivot point 9.

  The lateral arm 6 is a metal cylindrical shape and is curved upward. The reason for bending upward is to secure a lower working space. Both ends of the horizontal arm 6 are formed by hollow members 12 and 13 made of casting. The horizontal arm 6 is hollow as a whole, including the hollow members 12 and 13 as a structure. The rear portion of the hollow member 12 from the front arm 3 constitutes a part of the parallel link mechanism R, and the lateral arm 6 is interlocked with the parallel link mechanism R.

  An air inlet 14 is formed in the hollow member 13 at the tip of the horizontal arm 6. The rear hollow member 12 is attachable as a cover 15 as a separate part on the rear side from the base end arm 10. A connection port 16 is formed in the cover 15.

  In the stand main body 1, necessary portions including the lateral arm 6 from the surgical microscope 2 are covered with a drape P for making them sterile. At this time, if the portion of the drape P that covers the horizontal arm 6 or the surgical microscope 2 hangs down, the visual field of the doctor, assistant, or the like is obstructed.

  Therefore, the air E in the drape P is sucked from the air inlet 14 at the tip using the horizontal arm 6 having a hollow structure as a ventilation path. The suction is performed by the exhaust pump means 17. The exhaust pump means 17 is attached before the drape P is put on.

  The exhaust pump means 17 has a vertically long shape with a built-in pump, and has a structure including a flexible intake pipe 18 provided at an upper part thereof and a straight pipe-like exhaust pipe 19 provided at a lower part thereof. Yes. The lower end of the exhaust pipe 19 is an exhaust port 20. A switch 21 is provided in a part of the exhaust pump means 17. A power cord (not shown) of the exhaust pump means 17 is connected to the power source of the stand body 1. The exhaust pump means 17 starts to operate by pressing the switch 21 and stops when the switch 21 is pressed next. The exhaust pump means 17 is connected to a control unit 23 provided at the lower part of the stand body 1. The control unit 23 is for controlling the exhaust speed of the exhaust pump means 17, and after the switch 21 is pressed and operated, the exhaust speed of the exhaust pump means 17 is controlled by the control unit 23.

  First, how to install the exhaust pump means 17 will be described. First, the cover 15 is removed, and the intake pipe 18 of the exhaust pump means 17 is inserted into the connection port 16. Then, the cover 15 is attached to the hollow member 12 while the intake pipe 18 is inserted into the end of the lateral arm 6 that is exposed inside the hollow member 12.

  Simultaneously with the attachment of the cover 15, the exhaust pump means 17 is attached to the rear arm 4 by the two clamps 22 at the exhaust pipe 19 portion. The exhaust pump means 17 is attached to the rear arm 4 to be in a state along the rear arm 4, and the intake pipe 18 is inserted into the lateral arm 6 from the connection port 16 by a predetermined length. By attaching the exhaust pump means 17 simultaneously with the attachment of the cover 15 as described above, the operation of inserting the intake pipe 18 into the lateral arm 6 can be easily performed.

  After the exhaust pump means 17 is attached, the drape P is covered as described above including the exhaust pump means 17. When the switch 21 of the exhaust pump means 17 is pressed after the drape P is put on, the inside of the horizontal arm 6 is depressurized, and the air E in the drape P is sucked from the intake port 14 at the tip, and the sucked air E is taken into the horizontal arm 6. And the exhaust pump means 17 is discharged from the exhaust port 20 at the lower end of the exhaust pipe 19 to the outside of the drape P.

  Since air E is sucked from the air inlet 14 at the tip of the horizontal arm 6, the drape P near the surgical microscope 2 and near the tip of the horizontal arm 6 is surely sucked and brought into a close contact state, obstructing the visual field of the person around. do not do.

  This exhaust pump means 17 is controlled by the control unit 23, and after operating the switch 21 by pushing it, the inside of the drape P is exhausted at the first exhaust speed (volume flow rate) A as the start time T2 for the first two minutes. After a minute has elapsed, control is performed so that the inside of the drape P is continuously exhausted at the second exhaust speed B which is half of the first exhaust speed A.

  The exhaust pump unit 17 covers the stand body 1 having the same structure in advance with the drape P having the same structure and performs the exhaust operation at the first exhaust speed A. The drape P comes into close contact with the surgical microscope 2 and the lateral arm 6 in one minute. It has been confirmed that. That is, the contact time T1 required for the drape P is 1 minute. Therefore, even if there is any unexpected factor that delays the close contact of the drape P in the drape P itself or the suction structure, the start time T2 that is twice the contact time T1 is exhausted at the first exhaust speed A. This ensures that the drape P is in close contact.

  Once the drape P is in a close contact state, the exhaust speed is not so high after that, and generally about 10 to 20% of the exhaust speed for contact is sufficient to maintain the close contact state. In this embodiment, in order to reliably maintain the close contact state, after the start time T2 of 2 minutes has elapsed, the second exhaust speed B is switched to the second exhaust speed B, which is half (50%) of the first exhaust speed A, and thereafter the second exhaust speed B. The exhaust speed B remains unchanged. Since the exhaust speed is switched to the second exhaust speed B which is low, the intake noise generated from the exhaust pump means 17 is also halved, and the doctor does not care about it. The second exhaust speed B is preferably less than or equal to half of the first exhaust speed A.

  In this embodiment, the exhaust pump means 17 is attached to the rear arm 4 and exposed to the outside. Therefore, when the exhaust pump means 17 is repaired or maintained, the exhaust pump means 17 can be easily removed for the work. It can be performed and maintenance work is easy.

  Further, since the exhaust pump means 17 itself is attached to the rear arm 4 on the opposite side of the operation microscope 2 around the rotation shaft 5 of the parallel link mechanism R, the weight of the exhaust pump means 17 is the weight of the operation microscope 2. Counterweight W acting to counteract the weight of the stand main body 1 to balance the overall weight of the stand main body 1 can be reduced accordingly.

  In the above embodiment, the example in which the exhaust pump means 17 is attached to the rear arm 4 has been shown, but it may be attached to the front arm 3.

DESCRIPTION OF SYMBOLS 1 Stand main body 2 Surgical microscope 3 Front arm 4 Rear arm 5 Rotating shaft 6 Horizontal arm 14 Intake port 15 Cover 16 Connection port 17 Exhaust pump means 18 Intake pipe 19 Exhaust pipe 20 Exhaust port 23 Control part A 1st exhaust speed B 2nd Exhaust speed T1 Contact time T2 Start time R Parallel link mechanism E Air P Drape W Counterweight

Claims (5)

A lateral arm extending in the lateral direction from the upper part of the stand body installed on the floor is formed, and the surgical microscope is supported at the distal end of the lateral arm. A drape exhaust structure for a surgical microscope apparatus that exhausts the air in the drape by an assembled exhaust pump means to bring the drape into close contact with the surgical microscope and the lateral arm,
The exhaust pump means is preset with a start time that is longer than the contact time required for the drape to contact after the exhaust pump means is started and continues to operate at the first exhaust speed. A control unit for controlling the exhaust speed of the exhaust pump means is provided,
The control section operates the exhaust pump means at a first exhaust speed for a start time, and operates the exhaust pump means at a second exhaust speed lower than the first exhaust speed after the start time has elapsed. Microscope drape exhaust structure.   2. The drape exhaust structure for a surgical microscope apparatus according to claim 1, wherein the second exhaust speed is equal to or less than half of the first exhaust speed. The surgical microscope apparatus has a parallel link mechanism including two parallel front arms and a rear arm attached to a stand main body so as to be tiltable back and forth around a rotation axis set in the middle of the front arm. The upper end of the lateral arm is formed by a base end portion of a lateral arm extending forward, and a surgical microscope is supported on the distal end side of the lateral arm. However, it is a structure in which a connection port is formed at the base end,
The exhaust pump means has a structure having an intake pipe inserted into the connection port at the upper part and an exhaust pipe having an exhaust port at the lower end at the lower part, and is attached to either the rear arm or the front arm of the parallel link mechanism. The drape exhaust structure for a surgical microscope apparatus according to claim 1 or 2, wherein:   4. A drape exhaust structure for a surgical microscope apparatus according to claim 3, wherein an exhaust pump means is attached to the rear arm.   The draping exhaust structure for a surgical microscope apparatus according to claim 3 or 4, wherein a peripheral portion of the connection port at the base end portion of the lateral arm is detachable as a cover.

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