JPS6213605Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a microsurgery instrument.
In particular, the present invention relates to a microsurgery instrument that can be easily operated by a surgeon without having to force his or her hands or arms into an awkward position during surgery.

[Prior art]

BACKGROUND ART Microsurgery, which is performed using a surgical microscope, has recently become very popular in ophthalmology, neurosurgery, and other surgeries.

In conventional microsurgery instruments, the opening and closing operation of the clamping portion at the tip was performed using a lever provided at one location.

[Problem that the invention attempts to solve]

The conventional microsurgery instruments described above are extremely inconvenient because the operator's hand or arm must be aligned with the direction in which the lever is attached in order to orient the clamping portion at the tip in the direction required during surgery. Because of its natural posture, it was extremely difficult to manipulate under a microscope.

[Means for solving problems]

The inventors of the present invention have conducted various studies to solve the problems of the conventional microsurgery instruments mentioned above. As a result of developing a microsurgery instrument with a lever attached to it, we found that it was very easy to operate without putting the surgeon's hands and arms in an unreasonable position, and we were able to complete this invention. Ivy.

That is, in the present invention, a sliding member slidably inserted into a guide member and a cylindrical member are fixed together, and a holder is provided at the rear of the guide member to slidably hold a sphere therein. The member is screwed, and a handle body is screwed to the rear part of the holding member, and the base of the tip member inserted into the cylindrical member is fixed to the holding core, and the rear end of the sliding member is The sphere to be brought into contact is configured to be able to be pressed by a lever, and as the lever is pressed, the sliding member slides forward against the coil spring, and the gripping portion formed at the tip of the tip member and the tip of the cylindrical member The present invention relates to a microsurgery instrument characterized in that it is configured to be closed.

〔Example〕

Hereinafter, the present invention will be specifically explained based on embodiments shown in the drawings.

The tip member 3 is inserted through a cylindrical member 4, and the rear portion of the cylindrical member 4 is fixed to a sliding member 6. The base of the tip member 3 is fitted into the holding core 11 and the pin 8 is inserted into the holding core 11.
The holding core 11 is indirectly fixed to the guide member 7 via the holding core 11 and is disposed within the elongated hole 61 of the sliding member 6 .

Further, the rear part of the guide member 7 is screwed to the front part of the holding member 9, and the rear part of the holding member 9 is screwed to the front part of the handle body 1.

A coil spring 10 disposed between the guide member 7 and the sliding member 6 always urges the sliding member 6 in the direction of arrow e. Therefore, when the cylindrical member 4 moves in the direction of the arrow b as the sliding member 6 slides by the operation described later, the clamping portion 5 formed at the tip of the tip member 3 and the cylindrical member 4 is closed. It can hold sutures and tissues during surgery.

A sphere 12 is brought into contact with the rear end of the sliding member 6,
The sphere 12 is slidably held within the holding member 9. The lever 2 is arranged so that the pressing portion 21 can press the sphere 12 from four directions.

The rear parts of the plurality of levers 2 for pressing and sliding the spheres 12 are fitted into the handle body 1, and the rear ends of the integrally connected levers are attached to the rear end of the handle body 1. Pin 1 is screwed onto fixing member 13.
It is fixed at 4. The pressing part 21 of the lever 2 for pressing the sphere 12 is partially curved as shown in FIG. can slide smoothly from the initial operation.

When the lever 2, which can be pressed individually or simultaneously, is pressed in the direction of arrow a, the pressing part 21 of the lever 2 presses the sphere 12, the sphere 12 slides in the direction of arrow b, and the sliding member 6 is pressed against the coil spring 10. It slides in the b direction against the resistance.

Cylindrical member 4 fixed to sliding member 6 at the same time
moves in the direction of arrow b, the clamping portion 5 is closed.

In addition, in the above-mentioned embodiment, the case where the clamping part 5 is used for the tip of the microsurgery instrument was explained, but in the present invention, the clamping part 5 has a structure of tweezers or scissors. Changes can also be applied.

For example, as shown in FIG.
Alternatively, the holding portion 51 may be closed by moving the holding portion 51 in the direction shown in FIG.

[Effect]

Since the present invention has the configuration as explained above,
It is possible to prepare various holding parts with different structures and to make them detachable together with the guide member 7, and moreover, when the guide member 7 is removed, the sphere 12 is held in the holding member 9 without falling off. Therefore, it is easy to attach and detach, and tweezers and scissors with a structure suitable for the purpose can be used.

Also, during the operation, if the operator wishes to use the position indicated by the dotted line by rotating the gripping part 5 in the direction of arrow c or arrow d in Fig. 8, the operator can easily do so by rotating the writing instrument in his/her hand. In addition, since there are levers 2 in four directions, there is no problem in pressing operation, and the initial movement is smooth, and during surgery,
It has the effect of making it extremely easy for the surgeon to operate without forcing the hand or arm into an awkward posture, and is extremely effective as a microsurgery instrument used in surgical microscopes for ophthalmology, neurosurgery, etc.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is a front view of the microsurgery instrument 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. Fig. 4 is a partially enlarged sectional view of Fig. 1, Fig. 5 is a longitudinal sectional view of the sliding member, Fig. 6 is a plan view of the sliding member, and Fig. 7 is a holding part. A partial sectional view of the member, FIG. 8 is a perspective view of the clamping part, and FIG. 9 is an enlarged sectional view of the clamping part, showing another embodiment of the clamping part. DESCRIPTION OF SYMBOLS 1... Handle body, 2... Lever, 21... Pressing part, 3... Tip member, 4... Cylindrical member, 5... Clamping part, 6... Sliding member, 61... Long hole, 7 ...Guide member, 8...Pin, 9...Holding member, 10...
... Coil spring, 11 ... Holding core, 12 ... Sphere, 13 ... Fixing member, 14 ... Pin, 31 ...
Tip member, 41... cylindrical member, 51... clamping part.

Claims (1)

[Claims for Utility Model Registration] (1) A sliding member slidably inserted into a guide member and a cylindrical member are fixed together, and a sphere is slidably attached to the rear part of the guide member. A holding member held inside is screwed, and a handle main body is screwed to the rear part of the holding member, and the base of the tip member inserted into the cylindrical member is fixed to the holding core and slidable. A sphere that can be brought into contact with the rear end of the member is configured to be able to be pressed by a lever, and as the lever is pressed, a sliding member slides forward against a coil spring, forming a sphere on the tip member and the tip of the cylindrical member. A microsurgery instrument characterized in that the clamping portion is configured to be closed. (2) The microsurgery instrument according to claim (1) of the utility model registration, characterized in that the pressing part of the lever for pressing the sphere is partially curved. (3) Utility model registration claim No. (1) characterized in that the guide member is detachable from the holding member and the sphere does not fall off when the guide member is removed and is held by the holding member. Microsurgery instruments as described in Section 1.