JPS61259657A - Skin inciser - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Field of Industrial Application) This invention relates to a medical skin cutting tool having a cylindrical cutting edge.

(Prior Art) Conventionally, in this type of skin cutting tool, as shown in FIGS. 26 and 27, a cylindrical blade portion 2 is integrally formed with a cylindrical handle portion 1. This blade part 2
By applying a cylindrical cutting edge 3 formed at the front end of the blade to the skin and rotating it, the skin can be cut in a circular shape.

(Problems to be Solved by the Invention) There are restrictions on the selection of materials for the blade portion 2 due to its strength and rust prevention, and stainless steel or the like is usually used. In the tool, the handle 1 and the blade 2 are integrally formed, so the handle 1 has to be made of the same material as the blade 2.

However, even the handle 1 does not need to be made of expensive material such as stainless steel, and therefore, the conventional skin cutting tool has the problem of requiring monthly interest charges.

Structure of the Invention (Means for Solving the Problems) The present invention has been made in view of this problem, and as shown in the drawings of embodiments to be described later, the present invention provides a handle portion 1 and a blade portion having a cylindrical cutting edge 3. 2 are formed separately from each other, and these are provided with fitting portions that are coupled to each other.

(Function) Then, the blade part 2 is connected to the handle part 1 with the fitting part in the body direction, and when the user grips the handle part 1 and rotates the blade edge 3 against the skin, The skin can be excised in a circular shape.

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(7) & The skin excision tool is made of a metal cylindrical shape, and has a handle 1 and a metal cylindrical blade part 2 formed separately from the handle part 1, and the front end of the blade part 2 is A cutting edge 3 having a cylindrical shape is formed.

Next, a description will be given for each embodiment of the attachment portion provided in the handle portion 1 and the blade portion 2 to connect them to each other.

In the first embodiment shown in FIGS. 1 and 2, fitting surfaces 1a and 2a are formed on the inner periphery of the front end 4 of the handle 1 and the outer periphery of the rear end 5 of the blade 2, respectively. The end 5 is press-fitted into the handle 1 from the front end 4 side of the handle 1 to form the fitting surfaces 1a and 2a.
The blade portion 2 is integrally connected to the handle portion 1 by being fitted into each other.

In the second embodiment shown in FIG. The inner periphery of the fitting surface 1a is the fitting surface 1a. Further, a fitting surface 2a is formed on the outer periphery of the rear end 5 of the blade portion 2.

Then, the rear end 5 of the blade part 2 is positioned closer to the handle part 1 than the front end 4 side of the handle part 1.
In addition to being press-fitted inside and being locked to the locking protrusion 7,
The fitting surfaces 1a, 2a are fitted together to form the blade part 2.
is integrally connected to the handle 1.

In the third embodiment shown in FIGS. 4 and 5, a small-diameter fitting surface 2a is formed on the outer periphery of the rear end 5 of the blade part 2, and the fitting surface 2a
A locking step portion 8 is formed in the entire circumferential direction on the front end side of the shaft. Further, a fitting surface 1a is formed on the inner periphery of the n'1 end 4 of the handle 1.

Then, the rear end 5 of the blade part 2 is positioned closer to the handle part 1 than the front end 4 side of the handle part 1.
The locking stepped portion 8 is locked to the front end 4 of the handle 1, and the fitting surfaces 1a and 2a are fitted to each other, so that the blade 2 is integrally attached to the handle 1. It is designed to be connected.

In the fourth embodiment shown in FIG. 6.7, a locking protrusion 9 is formed on the inner peripheral edge of the handle 1 on the front end 4 side in the entire circumferential direction, and the locking protrusion 9 is closer to the rear end 6. The inner periphery of the fitting surface 1a is the fitting surface 1a. Further, a large diameter fitting surface 2a is provided on the outer periphery of the rear end 5 of the blade portion 2.
A locking stepped portion 10 is formed on the front end side of this fitting surface 2a.

Then, the front end of the blade part 2 is press-fitted into the handle part 1 from the rear end 6 side of the handle part 1, and the front end side of the blade part 2 protrudes from the front end 4 of the handle part 1, and the locking protrusion 9 and the locking step portions 10 are engaged with each other,
The fitting surfaces 1a and 2a are fitted into each other, so that the blade portion 2 is integrally connected to the handle portion 1.

In the fifth embodiment shown in FIGS. 8 and 9, the inner and outer circumferential surfaces of the handle 1 and the inner and outer circumferential surfaces of the blade 2 are tapered so that the front end thereof has a small diameter. The inner periphery of the front end 4 and the outer periphery of the rear 15 of the blade portion 2 are provided with a fitting surface 1a, respectively.
2a is formed.

Then, the front end of the blade part 2 is inserted into the handle part 1 from the rear end 6 side of the handle part 1, the front end side of the blade part 2 protrudes from the front end 4 of the handle part 1, and the blade part 2 is further inserted into the handle part 1. The blade part 2 is press-fitted into the handle part 1 and the two fitting surfaces 1a and 2a/J are fitted together.
-C is now integrally connected to -C.

In the sixth embodiment shown in FIG. 10.11, a fitting surface 1a is formed on the inner periphery of the front end 4 side of the handle portion 1 in a tapered shape such that the front end side thereof has a larger diameter, and the blade portion The inner and outer circumferential surfaces of 2 are tapered to have a larger diameter on the front end side, and a fitting surface 2a is formed on the outer periphery on the rear end 5 side.

Then, the rear part 5 of the blade part 2 is press-fitted into the handle part 1 from the front #t14 side of the handle part 1, and the fitting surfaces 1a and 2a are fitted together, and the blade part 2 is attached to the handle part 1. It is designed to be integrally connected.

In the seventh embodiment shown in FIG. 12.13, a locking protrusion 11 is formed on the fitting surface 1a on the inner circumference of the front end 4 side of the handle 1 in the axial direction of the handle 1, and the blade 2 Fitting surface 2 on the outer periphery of the rear end 5 side
A locking groove 12 into which the locking J1 protrusion 11 can be fitted is formed in a.

Then, the blade part 2 is press-fitted into the handle part 1 while the groove 12 and the locking protrusion 11 of the handle part 1 are fitted together, and the front end part 12a of the groove 12 is locked. It is locked to the front end 11a of the protrusion 11, and the secure fitting surfaces 1a, 2
a are fitted into each other so that the blade portion 2 is integrally connected to the handle portion 1.

In the eighth embodiment shown in FIGS. 14 and 15, a rib groove 13 is formed in the entire circumferential direction on the fitting surface 1a on the inner periphery of the front @ 4 side of the handle part 1, and also on the rear end 5 side of the blade part 2. A rib 14 that can be fitted into the rib groove 13 is formed on the outer circumferential fitting surface 2a.

Then, the rear @5 of the blade part 2 is from the front end 4 side of the handle part 1 to the handle part 1.
The rib 14 is press-fitted into the rib groove 13, and the secure fitting surfaces 1a and 2a are fitted to each other, so that the blade part 2 is integrally connected to the handle part 1. It has become.

In the ninth embodiment shown in FIG. 16.17, four notches 15a extending in the axial direction are formed in the front end 4 of the handle 1 in parallel in the circumferential direction, and the notches 1.5a are fitted into the front end 4 of the handle 1. Fitting arms 15 are formed, and a fitting convex portion 16 is formed in the entire circumferential direction on the fitting surface 1a formed by the inner periphery of these fitting arms 15. On the other hand, a fitting groove 1 that can fit into the fitting protrusion 16 is provided on the fitting surface 2a on the outer periphery of the rear end 5 side of the blade portion 2.
7 is formed in the entire circumferential direction.

Then, the rear end 5 of the blade part 2 is press-fitted into the handle part 1 from the fitting arm 15 side of the handle part 1, and the fitting convex part 16 is engaged in the fitting groove 17, and the firmly fitting The surfaces 1a and 2a are fitted into each other, so that the blade part 2 is coupled to the handle part 1 in two pieces.

In the tenth embodiment shown in FIG. 18.19, the handle 1
A fitting surface 1a is formed on the inner periphery of the front end 4 side of the fitting surface 1a.
A pair of U-shaped notches 18a are formed facing each other in the front end 4 of the same pattern portion 1 corresponding to a, and the fitting arms 18 are formed to extend toward the rear end 6 side by these notches 18a. , fitting protrusions 19 are formed on the inner surfaces of these fitting arms 18. On the other hand, a fitting hole 20 into which the fitting protrusion 19 can be fitted is formed through the fitting surface 2a on the outer periphery of the rear end 5 side of the blade portion 2 so as to face each other.

Then, the rear end 5 of the blade part 2 is positioned closer to the handle part 1 than the front end 4 side of the handle part 1.
The fitting protrusion 19 is press-fitted into the fitting hole 2o, and the secure fitting surface 1a.

2a are fitted into each other so that the blade portion 2 is integrally connected to the handle portion 1.

In the eleventh embodiment shown in FIG. 20.21, the handle 1
A pair of fittings from the front end 4! l! The fitting protrusions 22 are formed on the inner surfaces of the fitting arms 21, and the inner periphery of the handle 1 on the front end 4 side is formed on the inner surfaces of the fitting arms 21. A fitting surface 1a is formed on. On the other hand, a fitting hole 23 into which the fitting protrusion 22 can be fitted is formed through the fitting surface 2a on the outer periphery of the blade portion 2 on the contact side 5 so as to face each other.

Then, the rear end 5 of the blade part 2 is press-fitted into the front end 4 side J of the handle part 1, and the fitting protrusion 22 is engaged with the fitting hole 23, and the secure fitting surface 1a.

2a are fitted into each other so that the blade portion 2 is integrally connected to the handle portion 1.

In the twelfth embodiment shown in Figures 22 and 23, the handle 1
Fitting surfaces 1a and 2a are formed on the inner periphery of the front end 4 and the outer periphery of the rear end 5 of the blade part 2, respectively, and a crack groove 24 is formed in the blade part 2 from the cutting edge 3 to the entire rear @ 5. .

Then, the rear @5 of the blade part 2 is from the front end 4 side of the handle part 1 to the handle part 1.
When the blade part 2 is inserted into the interior, the split groove 24 of the blade part 2 expands, and the fitting surface 2a of the blade part 2 is pressed against the handle part 1 and the fitting surface 2a of the handle part 1 is pressed against each other, and the blade part 2 is fitted. It is designed to be integrally connected to the handle portion 1.

In the thirteenth embodiment shown in FIGS. 24 and 25, the handle 1
Fitting surfaces 1a and 2a are formed on the inner periphery of the front end 4 and the outer periphery of the rear end 5 of the blade part 2, respectively. An overhanging portion 25 formed on one side edge is spot welded to the side edge in use, so that the overhanging portion 25 projects in the circumferential direction.

Then, the rear end 5 of the blade part 2 is positioned closer to the handle part 1 than the front end 4 side of the handle part 1.
When inserted into the handle, the fitting surface 1a of the handle 1 and the fitting surface 2a of the blade 2 are pressed against each other due to the elasticity of the overhanging portion 25 of the blade 2, and the blade 2 is fitted into the handle. It is adapted to be integrally connected to part 1.

In the first to thirteenth embodiments, the material of the handle 1 is metal, but it may be made of synthetic resin.

Effects of the Invention As detailed above, according to the present invention, the handle part 1 and the blade part 2 are formed separately and are integrally joined, so the blade part 2 is made of expensive material such as stainless steel. Even when it is made of a material, the handle part 1 can be made of an inexpensive material rather than the same material as the blade part 2, and this has the effect of reducing material costs.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of a skin cutting tool according to a first embodiment of the present invention, FIG. 2 is an assembled sectional view thereof, and FIG. 3 is a second embodiment of a skin cutting tool of the present invention.
4 is an exploded perspective view of the third embodiment of the present invention, FIG. 5 is an assembled sectional view thereof, FIG. 6 is an exploded perspective view of the fourth embodiment of the present invention, and FIG. 8 is an exploded perspective view of the fifth embodiment of the present invention, FIG. 9 is an assembled sectional view thereof, FIG. 10 is an exploded perspective view of the sixth embodiment of the invention, and FIG. 12 is an exploded perspective view of the seventh embodiment of the present invention, FIG. 13 is an assembled sectional view thereof, and FIG. 14 is an exploded perspective view of the eighth embodiment of the present invention. , 15th
16 is an exploded perspective view of the ninth embodiment of the present invention, FIG. 17 is an assembled sectional view thereof, FIG. 18 is an exploded perspective view of the tenth embodiment of the present invention, and FIG. 20 is an exploded perspective view of the eleventh embodiment of the present invention, FIG. 21 is an assembled sectional view thereof, and FIG. 22 is the first embodiment of the present invention.
23 is an exploded perspective view of the second embodiment, FIG. 23 is a sectional view showing the fitting part in its assembled state, FIG. 24 is an exploded perspective view of the thirteenth embodiment of the present invention, and FIG. 25 is a fitting part in its assembled state. 26 is a perspective view of a conventional skin cutting tool, and FIG. 27 is a sectional view thereof.

Claims (1)

[Claims] 1. A handle part (1) and a blade part (2) having a cylindrical cutting edge (3) at the front end are formed separately from each other, and these parts are provided with a fitting part to be connected to each other. skin cutting tool.