JPS6213607Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a microsurgery scalpel used in microsurgery under a microscope in ophthalmology, neurosurgery, etc.

[Conventional technology]

Conventionally, microsurgery scalpels made of steel, diamond, saphire, ruby, etc. have been used under microscopes in ophthalmology and neurosurgery, but these scalpels are extremely The wall thickness is thin, and the tip is extremely sharp. Especially when the material is artificial stone, there is no toughness, and the tip of the scalpel is easily broken.

In order to protect this kind of microsurgery scalpel, a sponge material etc. is stored inside the case.
There were some in which a holder main body for holding the female part was fitted and housed in a recessed part of the sponge material, and others in a cap type.

[Problem that the invention attempts to solve]

However, in the conventional microsurgery scalpel described above, the female part often hits the protective equipment when the scalpel part is taken out or stored, resulting in breakage of the scalpel part.

The inventors of the present invention have conducted extensive research in order to eliminate the defects of the conventional microsurgical scalpels mentioned above, and have found that the fixing member of the scalpel part can be coaxially inserted into the holder body simply by pressing the pressing member. This book was developed based on the knowledge that a microsurgery scalpel that can be slid in and out and that the female part can be sufficiently protected by being constructed so that the female part is inserted and stored in the holder body can be obtained. This is what we came up with.

[Means for solving problems]

That is, in the present invention, the fixing member of the female part can be slid coaxially into and out of the tip cylinder part and the holder body by sliding the first sliding rod and the second sliding rod, and the female part is In a microsurgery scalpel configured to be inserted into and stored in a holder body, the holder body is provided with a first fixing cylinder member and a second fixing cylinder member each having a concave portion in which a pin is fixed, By providing a pin on the second sliding rod,
The first sliding rod and the second sliding rod are slid by pressing the pressing member against the spring disposed between the tip tube portion and the spring retaining ring, and the pin is implanted in the second sliding rod. When the pin is locked in the concave part of the second fixed cylindrical member, the female part protrudes from the tip cylinder part and held, and when the pressing member is pressed with the pin locked in the concave part of the second fixed cylindrical member, the pin slides from the recess of the second fixed cylinder member to the recess of the first fixed cylinder member and then releases the pressing force, the pin is guided to the slit of the second fixed cylinder member and the female part returns to the holder together with the female fixing member. This invention relates to a microsurgery scalpel characterized by being configured to be inserted and stored in the front part of the main body.

〔Example〕

EMBODIMENT OF THE INVENTION Hereinafter, the structure of this invention is demonstrated based on the Example shown in drawing.

In the drawings, Fig. 1 is a front view of the microsurgery scalpel of the present invention, and Fig. 2 is a view of A-A in Fig. 1.
A sectional view taken along line A, FIG. 3 is a front view of the female portion 12 protruding from the tip tube portion 1, FIG. 4 is a side view of the rear end of the first fixed tube member 7, and FIG. 5 is the fourth
6 is a side view of the tip of the second fixed cylinder member 8, and FIG. 7 is a sectional view taken along the line B-B in the figure.
-A cross-sectional view taken along line C, Figure 8 is D-D in Figure 6.
9 is a partially exploded view of the first fixed cylinder member and the second fixed cylinder member at opposing positions. A tip cylindrical portion 1 is screwed onto the tip of the cylindrical holder main body front portion 2, and a female fixing member 15 is further screwed onto the tip.
The tip of the female fixing member 15 is fitted into the tip tube 1, and the rear end of the female fixing member 15 is screwed to the tip of the second sliding rod 13. 1 is in contact with the tip of the sliding rod 3.

Both the first sliding rod 3 and the second sliding rod 13 are rotatable.

A spring 1 is installed between the tip tube portion 1 and the spring retaining ring 10.
1 is arranged, and always urges the second sliding rod 13 in the direction of arrow b.

A pressing member 6 is fixed to the rear end of the first sliding rod 3.

The rear end cylinder part 16 is screwed onto the rear part 5 of the holder main body, and the second sliding rod 13 and the first sliding rod 3 are attached by the spring 11 in the direction of arrow b. It locks the tip neck of the first sliding rod 3 when it is pushed back and also serves as a sliding guide for the first sliding rod 3.

The holder main body front part 2 and the holder main body rear part 5 are separated from each other by the flange part 4 of the first fixed cylinder member 7, respectively.
It is screwed onto the fixed cylinder member.

A pin 14 is implanted in the side of the second sliding rod 13, and when the female part 12 and the female fixing member 15 are housed in the front part 2 of the holder main body, the pin 14 is inserted into the second sliding rod 13. 2 is fitted into the slit 83 of the fixed cylinder member 8. Projections 71 and 81 are implanted in the cylindrical member 9 fitted into the rear part 5 of the holder body, and the projections 71 and 81 are connected to the hole 73 provided in the first fixed cylindrical member 7 and the second fixed cylindrical member 7, respectively. It is fitted into a hole 84 provided in the cylindrical member 8, and regulates the distance between the fixed cylindrical members 7 and 8 and the direction of rotation thereof.

When the pressing member 6 is pressed in the direction of arrow a, sequentially,
First sliding rod 3, second sliding rod 13, female fixing member 1
5 moves forward, and the female part 12 protrudes from the tip tube part 1 and is held. At this time, the pin 14 implanted on the side surface of the second sliding rod 13 slides inside the slit 83 of the second fixed cylindrical member 8, reaches the recess 72 of the first fixed cylindrical member 7, and is then pushed. When the pressure is released, pin 14
is returned to the recess 82 adjacent to the slit 83 of the second fixed cylinder member 8 and held there.

In order to insert and store the female part 12 and the female fixing member 15 into the holder main body front part 2 again, the pressing member 6 is pressed again.

The movement of the pin 14 at this time is the opposite movement to that described above, and can be explained based on FIG. 9. That is, in a state where the female part 12 protrudes beyond the tip tube part 1, the pin 14 is located in the recess 8 of the second fixed tube member 8.
2 and presses the pressing member 6 again, the pin 14 hits the recess 72 of the first fixed cylinder member 7 as shown by the arrow in FIG. , the pin 14 is connected to the second fixed cylinder member 8
The female part 12 is guided into the slit 83 and returns to the original state shown in FIG.

[Effect]

In the microsurgery scalpel of the present invention, when the operator grasps the holder body and presses the pressing member 6 with his or her thumb, the first sliding rod and the second sliding rod slide, and the tip of the scalpel fixing member 15 is moved. and the female part 12 is the tip tube part 1
more prominent.

Furthermore, in order to insert and store the female portion 12 into the front portion 2 of the holder body from this state, by pressing the pressing member 6 again, the pin 14 is again guided into the slit 83 and the female portion 12 is inserted and stored in the front portion 2 of the holder body.

[Effect of idea]

Since the present invention has the above-mentioned configuration, when the surgeon hands the microsurgery scalpel to a surgical assistant after surgery, the scalpel can be immediately retracted with a single touch by pressing the pressing part. When used in surgery, etc., when the pressing part is pressed, the first sliding rod, the second sliding rod, and the scalpel fixing member move forward in order, and the scalpel part 12 is held so as to protrude from the distal end cylinder part, so that the scalpel part is held securely. Does not require a cap etc. for protection. Therefore, it has the effect of being able to very easily prevent the female part from breaking.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is a front view of the microsurgery scalpel of the present invention, Fig. 2 is a sectional view taken along line A-A in Fig. 1, and Fig. 3 is a cross-sectional view taken along the line A-A in Fig. 1. A front view with the female part protruding from the tip cylinder part, FIG. 4 is a side view of the rear end of the first fixed cylinder member,
Figure 5 is a cross-sectional view taken along line B-B in Figure 4;
The figure is a side view of the tip of the second fixed cylinder member, FIG. 7 is a sectional view taken along line C-C in FIG. 6, and FIG.
FIG. 9 is a cross-sectional view taken along the line DD in the figure, and is a partially exploded view of the first fixed cylinder member and the second fixed cylinder member at opposing positions. 1...Tip tube part, 2...Front part of holder main body, 3
...First sliding rod, 4...Flange part, 5...Holder main body rear part, 6...Press member, 7...First fixed cylinder member, 71...Protrusion part, 72...Concave part, 73...
... hole, 8 ... second fixed cylinder member, 81 ... protrusion, 82 ... recess, 83 ... slit, 84 ...
Hole portion, 9...Cylinder material, 10...Spring retaining ring, 1
1... Spring, 12... Female part, 13... Second sliding rod, 14... Pin, 15... Female fixing member, 16
...Rear end cylinder part.

Claims (1)

[Claims for Utility Model Registration] (1) The first sliding rod and the second sliding rod can be slid coaxially into and out of the fixing member of the female part, the tip cylinder part, and the holder body. , in a microsurgery scalpel configured such that the female part is inserted into and stored in a holder body, a first fixed cylindrical member having a recessed part in which a pin is fixed in the holder body; By providing a fixed cylindrical member and providing a pin on the second sliding rod, the pressing member is pressed against the spring disposed between the tip cylindrical portion and the spring retaining ring, and the first sliding rod and the second sliding rod are pressed. When the sliding rod is slid and the pin implanted in the second sliding rod is locked in the recess of the second fixed cylinder member, the female part protrudes from the tip cylinder part and is held, and the pin is held in the second position. When the pressing member is pressed while being locked in the recess of the fixed cylindrical member, the pin slides from the recess of the second fixed cylindrical member to the recess of the first fixed cylindrical member, and then when the pressing force is released, the pin is A scalpel for microsurgery, characterized in that the scalpel part is guided into the slit of the second fixed cylinder member and is inserted and stored in the front part of the holder body again together with the knife fixing member. (2) The microsurgery scalpel according to claim 1, wherein both the first sliding rod and the second sliding rod are rotatable.