JPS6241652A - Surgical incising jig - 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] Industrial Application Fields] The present invention includes, for example! The present invention relates to a surgical resection tool that can efficiently resect cartilage such as a meniscus in the first-class W. W. cavity.

[Prior art] For example, as an incision knife for surgical operations, there is a
-501935q, but this publication describes how to use a circular rotating force attached to the tip to cut the area between the IJJ and the IJJ by rotating and incising it by the dispatch of staff on station duty, etc. It is designed to minimize.

[+m points that the invention attempts to solve]! - In the technique 2 described above, by rotating a round rotary blade, νJ
However, since there was nothing to support this rotation, it did not bite sufficiently when pressed against the meniscus of the knee joint, etc., and it also escaped, making it difficult to perform efficient resection. There may be cases where unexpected inconveniences may occur.

The present invention was made in view of these problems.The C1 round rotary blade is used to resection shells for the external ear 4 to reliably capture damaged areas such as the Y-lunar plate in knee joints, etc. It is an object of the present invention to provide a surgical resection tool that has good abutment, prevents escape, and can perform efficient resection.

[Means for solving the problem] In this uJ shell removal 1, an arm 7 is passed through the outer tube 4 of the elongated insertion portion 3, and a round rotary blade 9 is provided at the tip of the arm 7. A section support plate 6 that supports the target section 12 to be resected by the rotary blade 9 is formed on the outer tube 4, and is biased between at least one of the arm 4 that supports the round rotary blade 9 and the section support plate 6. The elastic body 11 is provided [Function 1: By sandwiching the target part 12 to be resected between the round rotary blade 9 of the cutting tool 1 and the section support plate 6, it can be resected by the biasing means of the elastic body 11. .

[Embodiment] The present invention will be explained in detail below with reference to the drawings. Figs. 1 to 4 relate to a first embodiment of the present invention. FIG. 1 shows an overall view of the surgical cutting tool according to the first embodiment. The surgical cutting tool 1 shown in FIG. It consists of an elongated insertion section 3 that is inserted into a joint cavity of a knee or the like. This insertion part 3 consists of a cylindrical outer tube 4, the outer tube 4 has an end fixed to the grasping part 2, a part of the tip 1 forms an opening 5, and a part F is protruded and cut into pieces. A support plate 6 is formed. Next, on the tip side of the outer tube 4, an arm 7 is fixed to the outer tube 4 with a pin 8, and the tip of the arm 7 is divided into two prongs, as shown in FIG. It is supported by the arm 7 with a C-bin 10 sandwiched therebetween, and is provided so as to be rotatable. And the round rotary blade 9 is the arm 7
and the section support plate 6, and the arm 7 opposes the urging force of the spring 11 when the target part 12 to be resected is inserted between the round rotary blade 9 and the section support plate 6. 146D is enabled. Figure 2 shows a state diagram in which the surgical resection tool 1 is moved in the direction of the arrow of the target resection area 12, and Figure 3 shows a diagram showing the state in which the surgical resection tool 1 is moved in the direction of the arrow in the target resection area 12. This shows the state in which the blade is being cut by the rapidly rotating blade 9.

The operation of the surgical cutting instrument having such a configuration will be explained.

Ma! When performing meniscus resection within the knee joint, for example, a small hole is created in the knee through which the distal end of the insertion section 3 of the surgical resection instrument 1 can be inserted by puncturing the surgical resection tool 1 using a puncture operation such as a toshikart. Then, bring your eye close to the eyepiece of the arthroscope and measure the vA while inserting the second
As shown in the figure, a round rotary blade 9 supported by an arm 7 at the tip of the insertion section 3 of the cutting instrument 1 in the direction of the arrow as it approaches the target area 12 and a section support plate formed at the tip of the outer tube 4. 6
The resection target site 12 is sandwiched between the two.

Next, as shown in FIG. 3, the target area 12 is held down by the biasing force of the coil spring 11 between the arm 7 and the section support plate 6, and the round rotary blade 9 is moved forward by holding the grip part 2 with your hand. , rotate and cut.

In this way, the round rotary blade supported at the tip of the arm and the spring biasing force of the section support plate completely engulf the target area, so it sticks well and escapes! -3 The target area can be reliably excised without any errors.

FIG. 5 shows a surgical cutting instrument according to a second embodiment of the present invention.

In this second embodiment, an arm 13 whose proximal end is split into two is fixed to the outer tube 4 at the distal end of the insertion section 3, and a spring 11 is disposed between the two prongs of the arm 13 and the section support plate 6. is the number of deaths. The other points are the same in structure and operation as in the first embodiment, and will therefore be omitted.

FIG. 6 shows a third embodiment of a surgical cutting tool of the present invention.

In this third embodiment, a coil spring 11 is attached inside the distal end of the outer tube 4 of the insertion section 3 between the arm 7 and the outer tube 4 so as to bias it.

The configuration of the pond is the same as that of the first embodiment or the second embodiment, so a description thereof will be omitted.

In this way, if the spring is installed in a long position, when the length of the target area to be resected is long, the spring will not become an obstacle as in the first embodiment, and the distance that can be resected at one time can be increased, and the round shape The rotary blade can travel a long distance.

FIG. 7 shows a fourth embodiment of the present invention, in which the coil spring of the third embodiment is replaced with a spiral spring 14, and an eighth embodiment of the present invention.
The figure shows a fifth practical example of the present invention, in which the coil spring is replaced with a plate spring 15. The other configurations are the same as those in the first to third embodiments, so explanations will be omitted. It goes without saying that compressed rubber or the like may be used in place of the leaf spring shown in FIG.

FIG. 9 shows a sixth embodiment of the present invention. This sixth embodiment shows the tip of a cylindrical outer tube 4 of the insertion section 3 of a surgical cutting instrument 1, and an arm 7 is integrally formed with the outer tube 4, and the tip is tapered and has a sharp round shape. It is stopped by a bottle 10 with the rotary blade 9 sandwiched therebetween. A round rotary blade 9 can freely rotate with respect to this arm 7. On the other hand, one end of the section support plate 16 is located at the center of the outer tube 4 and fixed to the outer tube 4 with a pin 17, and the other end is fitted with a coil spring inside the outer tube 4 so as to be in contact with the round rotary blade 9. 11 is provided, and the periphery of the outer tube 4 and the section support plate 16 are urged by a coil spring. When the target section 12 is pinched, the section support plate 6 can freely swing in the direction of the arrow shown by the dashed line. The configuration of numeral 1 is the same as that of the first embodiment, so a description thereof will be omitted.

If the arm is fixed in this manner and the section support plate can be swung, the mechanism at the tip can be simplified.

FIG. 10 shows a seventh embodiment of the present invention. In this embodiment, an arm 7 supporting a round rotary blade 9 is fixed to an outer tube 4, and a section support plate 18 is fixed as in the sixth embodiment. is made of an elastic material, and one end of this section support plate 18 is attached to the outer tube 4. The configuration of the pond is the same as that in the first embodiment, so a description thereof will be omitted.

In this way, instead of providing a biasing force to the round rotary blade and section support plate, the section support plate is made of an elastic material to bias the round rotary blade, so the structure is much simpler than the previous embodiment. It is a composition.

In the above embodiment, the round rotary blade is rotated by manually operating the surgical cutting tool, but it is not limited to manual operation. Of course, the mold rotary blade may be rotated.

Furthermore, the surface of the semicircle inside the joint cavity of the knee etc. is slippery and has a wedge-shaped cross section, so it is easy to cut and escape. Therefore, in order to make it easier to fit the part you want to cut, it is necessary to cut it in a semicircle as shown in Figure 11. Blade 1 has a serrated blade to hold the board in place.
9, or may have a concavo-convex blade 20 as shown in FIG.

[Effects of the Invention] The present invention provides a section support plate so that the round rotary blade can reliably excise the target section without missing it, and the round rotary blade is urged against the section support plate by an elastic body such as a spring. This makes it possible to perform resection by simply moving the tool back and forth in the longitudinal direction without having to grasp it after insertion, making it possible to obtain an efficient surgical resection tool.

[Brief explanation of the drawing]

FIGS. 1 to 4 relate to a first embodiment of the present invention.
The figure is a side view showing the entire first embodiment. Figure 2 shows the state in which the round rotary blade and the section support plate are in contact with each other with a spring and move to the target area for resection, and Figure 3 shows the target area to be resected between the rough rotary force and the section support plate. 4 is a plan view of the tip of FIG. 1, FIG. 5 is a plan view of the second embodiment, FIG. 6 is a side view of the third embodiment, and FIG.
The figures are a side view of the fourth embodiment, FIG. 8 is a side view of the fifth embodiment, FIG. 9 is a side view of the sixth embodiment, FIG. 10 is a side view of the seventh embodiment, and FIGS. FIG. 12 shows a side view of another embodiment. 3... Insertion part 4... Outer tube 6,16.18.
... Section support plate 7.13 ... Arm 9 ... Round rotary blade 11 ... Elastic coil spring) 14 ... Spiral spring 15 ... Leaf spring patent applicant Olympus Optical Industry Co., Ltd. Figure 6 Figure 7 Figure 8 Figure 9

Claims (1)

[Claims] A surgical resection tool having a round rotary blade provided at the tip of an outer tube of an elongated insertion part via an arm, comprising: a section support plate supporting a section to be excised on the outer tube; an arm supporting the round rotary blade; and a section. A surgical cutting tool comprising: a support plate; and an elastic body, at least one of which is biased toward the support plate in a direction toward each other by biasing means.