JPS6041925Y2 - Microsurgery instruments - Google Patents

Description

[Detailed description of the invention] This invention relates to a microsurgery instrument, and its purpose is to use it without obstructing the surgeon's field of view during microsurgery within the limited field of view under a microscope. The purpose is to provide easy-to-use microsurgery instruments.

Microsurgery using a surgical microscope has become very popular in recent surgeries such as ophthalmology, brain surgery, and vascular suturing. There is a need for microsurgical instruments with shapes suitable for delicate operations.

However, conventional front blades, Ginko, etc. had several problems as described below.

That is, in the conventional front blade as shown in FIG. 4, when the handle 16 is pressed, the blade portion 15 closes from the base of the blade portion using the gusset 14 as a fulcrum, so that escape occurs when cutting threads or tissue. It was sometimes difficult to operate.

Furthermore, there is a limit to the size of the blade due to its structure with a fulcrum, and with this structure it was not possible to make it smaller than the current size.

Further, since the blade portion is located on an extension of the tip of the handle, it may be difficult to operate depending on the surgical site and may obstruct the surgeon's field of vision.

With conventional silver wires, the tip tends to shift due to the distance from the fulcrum to the tip.

On the other hand, the microsurgery instrument of the present invention solves the above-mentioned problems, and its structure will be explained below with reference to the drawings.

The drawings show an embodiment of the present invention, and the case of a front blade having a pair of blade parts 101 and 201 will be described as an example.

The tip member 1 is fitted into a cylindrical member 2, and the cylindrical member 2 is further fitted into a holding member 3.

The blade 101 rising from the tip of the tip member 1 and the blade 201 rising from the tip of the cylindrical member 2 form a pair of blades.

The base of the tip member 1 is fixed to the holding member 3 by the fixing screw 5, so that the tip member 1 and the holding member 3 are fixed integrally, and as the cylindrical member 2 moves forward by the operation described later, the position shown in FIG. As shown in FIGS. 6 and 3, the blade portion 101,
201 is closed.

A slit 11 is provided at the base of the cylindrical member 2 so as not to hit the fixing screw 5, and the rear end is fixed to the connecting member 6 with a pin 13.

The other end of the connecting member 6 is pivotally connected to an arm member 9.9 at pivots 7, 7, and the arm member 9, 9 is connected to the handle 1 at a pivot 8.8.
It is pivoted inside the 0.10.

The tip of the handle 10.10 is connected to the holding member 3 by the pivots 4, 4.
The rear end is connected by a spring 12.

When the handle 10.10 is pressed against the spring 12, the arm members 9, 9 push the connecting member 6 in the direction of the arrow a, and the cylindrical member 2 moves forward as shown in FIG. Can cut threads and tissue.

In the conventional front blade as shown in FIG. 4, the blade portion 15 is closed by holding the handles 16, 16 and using the gusset 14 as a fulcrum.
With a structure that has such a gusset (hinge), it was impossible to make the blade smaller than the current size, but with this invention, even if the blade is made very small, it has a structure without a gusset (hinge). It maintains strength and shearing force, and prevents sutures from getting caught and breaking.

The embodiment drawings show the case of a front blade consisting of a pair of blade parts 101 and 201, but if this is replaced with a clamping part (not shown), the surgeon's field of view will not be obstructed, and the dislocation of the tip part will be avoided. It should be added that a microsurgical device that can be used as a non-containing forceps can be obtained.

According to the structure of the present invention, the pair of blades can be formed into a small shape with a rising angle suitable for surgical operations, making it possible to cut sutures, incise, and excise tissue when operating a microsurgery under a microscope. It is easy to operate and does not obstruct the operator's field of vision.

The handle has almost the same shape as the handles of commonly used products, is lightweight, compact, and has a well-balanced weight, so it can be used with the same feeling as conventional products.

The tip member 1 can be freely attached and detached using 51 fixing screws, so as shown in Figs. 5, 7, and 8, the tip member 1 with different blade shapes can be adjusted to suit the purpose of use without changing the shape of the handle. It can be used as

According to the structure of this invention, the shape of the blade part can be closed from the base as shown in Figure 5, closed in parallel as shown in Figure 7, or closed from the tip as shown in Figure 8. It can be done.

When closing in parallel, the tissue can be cut in a forced state.

If the structure is such that it closes from the tip, the suture or tissue can be cut in such a way that it is not escaped.

In addition, according to the structure of this invention, the direction of the pair of blades can be designed arbitrarily, so by providing blades with different directions and shapes, the operator's hand position can be adjusted to the best position for operation depending on the condition of the surgical site. Choosing and using the one that suits your condition will make it easier to perform the surgery.

The present invention is a microsurgery instrument having the configuration and features as described above, and is extremely useful especially for microsurgery under an operating microscope in ophthalmology, brain surgery, blood vessel suturing, and the like.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a plan view of the microsurgery instrument of the present invention when the tip member is a front blade; FIG. 2 is a partially enlarged sectional view of FIG. 1; Fig. 3 is a partially enlarged view with the tip closed, Fig. 4 is a perspective view of a conventional front blade, Figs. 5 and 6 are illustrations of the sliding state of the cylindrical member, and Figs. FIG. 8 is a partially enlarged view of the tip of the front blade with a different shape of the blade. 1... Tip member, 2... Cylindrical member, 1
01,201...Blade portion, 3...Holding member, 4...Pivot, 5...Fixing screw,
6... Connecting member, 7... Pivot, end...
...Pivot, 9...Arm member, 10...
...Handle, 11...Slit, 12...
・Spring, 13... Pin, 14... Gusset, 15... Blade, 16... Handle.

Claims (3)

[Scope of utility model registration request] (1) A removable tip member is further fitted into the cylindrical member fitted into the holding member, and a pair of blade portions or clamping portions rise from the tip of the cylindrical member and the tip of the tip member, respectively. The base of the tip member is fixed to the holding member, the rear end of the cylindrical member is connected to the handle via the connecting member and the arm member, and when the handle is pressed against a spring, the cylinder is closed. A microsurgery instrument characterized in that the shaped member moves forward and the blade part or the clamping part closes. (2) A microsurgery instrument according to claim 1 of the Utility Model registration claim, characterized in that the tip member of the blade portion or the clamping portion having different inclination angles is detachably attached to the holding member. . (3) The microsurgery instrument according to claim 1, which is a registered utility model and has a pair of blade portions or clamping portions that can be arbitrarily formed into a rising angle and shape suitable for surgical operations.