JPH0431046Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a joint for a surgical microscope.

When performing surgery using a surgical microscope, the user performs the surgery with both hands while observing the affected area with the surgical microscope, so as shown in the first figure, the surgical microscope 1 is attached to the pedestal 4 via the joint 2 and the mounting tube 3. It is generally attached to the arm portion 5.

Of course, the observation position of the affected area during surgery is not constant, but with conventional joints, the mounting angle of the surgical microscope is fixed, so when observing the affected area in horizontal, diagonal, vertical, etc. directions with the surgical microscope, it is necessary to Joints with different installation angles (e.g. second
This has the disadvantage that not only is it troublesome to replace the joint, but also that several types of joints must be prepared.

The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide a joint for a surgical microscope that allows the mounting angle of the surgical microscope and the pedestal to be easily changed and enables observation over a wide range.

Embodiments of the present invention will be described below based on the drawings.

FIG. 4 is a cross-sectional view of one embodiment of the present invention, and FIG. 5 is a left side view of FIG. 4, showing only the joint body as a cross-section.

A mounting shaft 7 is screwed onto the upper part of the joint body 6 and forms a first member. After the mounting shaft 7 is inserted into the mounting tube 3 attached to the arm portion 5 shown in FIG. 1, it is fixed to the mounting tube 3 by screwing the set screw 8 into the upper screw hole 7a. Retained. The rotating body 9, which is provided with a plurality of recesses 9a on its side surface, forms a second member, and has a threaded portion 10a at one end that is screwed into the joint body 6, and the other end is tightened and fixed to the knob 10b. bearing 11
The rotational operation of the tightening shaft 10 causes the flange portion 10c of the tightening shaft 10 and the inner periphery of the joint body 6 to rotate to the rotating body 9. A clamping means for clamping the rotating body 9 by adjusting the clamping force is formed. At a position facing the recess 9a, a rotating body holding shaft 12, which has a knob 12a fixed to one end and is slidably held in a bearing 13, is rotated by a spring 14 into a fourth
It is disposed so as to be able to engage and detach from the recess 9a while being biased in the right direction in the figure (that is, the direction of entering the recess 9a), and forms rotation holding means for the rotating body 9. Further, a connecting shaft 16 connected to a surgical microscope bracket 15 integrated with the surgical microscope 1 shown in the first drawing is screwed into a screw hole 9b provided at the lower end of the rotating body 9. In addition, the code 17a, 1
Reference numeral 7b is a gap member having high frictional resistance and made of an elastic resin material or the like.

Next, the operation of the embodiment of the present invention having the above configuration will be explained. The joint body 6 has a mounting shaft 7 attached to the mounting cylinder 3 at a desired angle (desired rotation angle with respect to the central axis 18).
By screwing in the setscrew 8 after inserting the
The surgical microscope 1 is rotatable about a central axis 18.

In addition, when the rotating body 9 is made rotatable by pulling the knob 12a against the biasing force of the spring 14, one of the plurality of recesses 9a corresponding to the desired mounting angle is attached to the rotating body holding shaft. 12, and the rotating body holding shaft 12 is moved by the biasing force of the spring 14.
one end of the recess 9 corresponding to the desired mounting angle.
The rotation angle with respect to the central axis 19 can also be adjusted by fixing the joint main body 6 and the rotary body 9 by engaging the joint body 6 in a protruding manner.

Therefore, if the desired mounting angle is permitted by the stepwise setting angle, the angle can be adjusted very easily.

Furthermore, in this embodiment, the tightening shaft 10 is rotated via the tightening knob 10b, and the tightening shaft 10 is rotated via the tightening knob 10b.
By tightening, the rotating body 9 is held between the flange 10c and the joint main body 6, and the rotating body 9 can be held and fixed at any mounting angle regardless of the engagement between the recess 9a and the rotating body holding shaft 12.

Of course, if the tightening shaft 10 is tightened while the recess 9a and the rotating body holding shaft 12 are engaged with each other, the rotating body 9 can be held and fixed more reliably.

As described above, according to the present invention, the angle can be adjusted very easily in preset stepwise angles, and the angle can also be adjusted at any mounting angle, which improves work efficiency in surgeries, etc. This has great effects, such as not only increasing the amount of energy used, but also reducing costs.

[Brief explanation of drawings]

FIG. 1 is a side view showing a conventional mounting state of a surgical microscope, FIGS. 2 and 3 are perspective views of a conventional joint for a surgical microscope, and FIG. 4 is a sectional view of an embodiment of the present invention. FIG. 5 is a left side view of FIG. 4, showing only the joint body as a cross section. DESCRIPTION OF SYMBOLS 1... Surgical microscope, 4... Mount, {6... Joint body, 7... Mounting shaft} (first member), 8...
Set screw, 9...Rotating body (second member), 10...
...Tightening shaft, {9a... recess, 12... rotation holding shaft} (rotation holding means).

Claims (1)

[Scope of Claim for Utility Model Registration] A joint for a surgical microscope for connecting a surgical microscope and a pedestal for holding the surgical microscope, comprising: a first member having an attachment portion at one end that is removably attached to the pedestal; a second member that is a rotating body having a mounting portion for mounting a surgical microscope, and has notches provided at predetermined intervals along the rotational axis in a plane perpendicular to the rotational axis; , a flange portion that is inserted through the other end of the first member and the rotating shaft of the second member and abuts the second member, rotatably holds the second member, and a clamping means for clamping the first member and the second member by the flange portion through a rotational operation;
A joint for a surgical microscope, characterized in that it has a rotation holding means made of a member that can move forward and backward into the notch of the member.