JPH0324171Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is an ultrasonic surgical handpiece, in particular, an ultrasonic surgical handpiece that applies ultrasonic vibration energy to the affected area with a tip horn to perform a good surgical operation. Regarding.

[Prior Art] In the surgical fields of general surgery, neurology, urology, and ophthalmology, ultrasonic surgery is performed to fragment or emulsify diseased tissue using ultrasonic vibration energy.

Ultrasonic vibrations in this surgery are applied by a handpiece, and conventionally this handpiece is
As shown in the figure, a horn 12 that is vibrated and driven by the ultrasonic vibrator is provided at the tip of a handpiece body 10 that houses an ultrasonic vibrator, and a horn 12 that is vibrated and driven by the ultrasonic vibrator is provided at the rear end. cable for 1
4 is arranged, making it a so-called pencil-shaped handpiece.

Therefore, by holding the handpiece body 10 in a manner similar to holding a pen, the operator applies vibrational energy to the affected area to perform, for example, cataract surgery on the eye or cancer surgery on the liver or the like.

[Problems to be solved by the invention] However, the conventional handpiece body 10 and horn 12 have a diameter of 2 to 3 cm and a length of 25 to 3 cm.
It consists of an ultrasonic transducer with a size of 27 cm,
In particular, since the cooling water supply cable 14 for dealing with the heat generated by the magnetostrictive vibrator is relatively heavy, there is a problem in that long-term treatment places a heavy burden on the operator.

Moreover, as shown in FIG.
Since it is disposed at the rear end of the handpiece body 10, there is a problem in that it has a large influence on the handpiece in terms of balance, makes the operator feel extra heavy, and has poor operability.

Additionally, the horn 12 vibrates in the axial direction of the handpiece, and when held like a pen, it vibrates in a direction that requires relatively little force from the operator's hand, making it difficult to hold the handpiece. .

Purpose of the Invention The present invention was devised in view of the above-mentioned conventional problems, and its purpose is to provide an ultrasonic surgical handpiece that is easy to hold and has good operability.

[Means for Solving the Problems] In order to achieve the above object, the present invention includes a handpiece body in which an ultrasonic transducer is housed;
a horn protruding from one end of the handpiece body and driven by vibration by the vibrator;
In the ultrasonic surgical handpiece, an auxiliary holder is formed protruding from the side surface of the handpiece body at or near the center of gravity, and a cable for supplying power and cooling water to the ultrasonic transducer is connected to the main body. The main body and the auxiliary holder are used as gripping parts for the operator, and the cable is extended to the outside from near the center of gravity of the handpiece through the auxiliary holder so that no rotational moment is generated. Characterized by being drawn out.

[Operation] According to the above configuration, the operator can freely grasp the handpiece body and the auxiliary holder.

That is, it is possible to hold the handpiece so as to wrap both the handpiece main body and the auxiliary holder, to hold the handpiece by touching the auxiliary holder with the back of the hand and hooking the gripping index finger onto the handpiece main body, or to hold only the auxiliary holder. In this way, by freely grasping the handpiece according to the size of the operator's hand or preference, a stable holding state of the handpiece can be ensured.

Furthermore, since the cables for power supply and cooling water supply are passed through the auxiliary holder, the weight of the cables hanging on the handpiece is reduced, and the operator does not feel the weight compared to the conventional handpiece.

[Embodiments] Hereinafter, preferred embodiments of the present invention will be described based on the drawings.

FIG. 1 shows the side and top surfaces of the surgical handpiece, and the handpiece body 10 has an auxiliary holder 16 projecting from the side. This auxiliary holder 16 is installed near the center of gravity of the handpiece body 10 and the horn 12, but in this embodiment, as shown in FIG. The auxiliary holder 16 is attached so that the entire center of gravity position Z ₀ is on a vertical line of the center position O of the operator's hand holding the auxiliary holder 16 .

A cable 14 for power supply and cooling water supply is housed in the auxiliary holder 16, and the cable 14 is attached so as to pass through the auxiliary holder 16 and extend outward from the bottom thereof. Therefore, the cable 14 is not passed over the operator's hand or arm, and the force burden on the operator can be reduced (details will be described later).

In addition, this auxiliary holder 16 not only functions as a gripping part for the handpiece, but also functions as a gripping part for the handpiece.
It also serves as a guide for the cooling water cable so as not to crush the cooling water supply cable 14 housed inside. Therefore, the auxiliary holder 16 can effectively supply cooling water to the ultrasonic transducer section and prevent the ultrasonic transducer from being heated.

Furthermore, in the handpiece body 10 of the embodiment, a finger rest 18 is provided in front of the attachment position of the auxiliary holder 16.
is provided so that the handpiece can be held well with one's fingers hooked onto the handpiece body 10.

According to the handpiece having such a configuration, it is possible to hold the handpiece both stably and freely. That is, as shown in FIG. 3, grip the auxiliary holder 16 with three fingers excluding the index finger and thumb and the back of the hand, and
By holding the 0 with your thumb and index finger, you can hold the handpiece in an extremely stable manner.

It is also possible to hold the handpiece in other ways, such as holding it with the middle finger on the handpiece body 10 or using the auxiliary holder 16.
It is also possible for the surgeon to hold it in various ways depending on the conditions of the surgical site.

According to the present invention, there is an advantage that the weight of the cable 14 is not felt. That is, according to the conventional handpiece, as shown in FIG. 4, when the handpiece is gripped at the center of gravity position Z, a moment force due to the cable 14 is applied in addition to the weight of the handpiece body 10. for example,
When a tension force T is applied to the rear end of the handpiece body 10 by the cable, a moment of L×T, which is the distance L from the center of gravity Z to the end multiplied by the tension T, is applied to the operator's hand. In this case, the moment l× exerted by the force of the operator's fingers is
m' (distance l from finger position Z' to center of gravity position Z) and moment M applied by the wrist are required, and the operator must adjust the force with which the handpiece is held.

In contrast, in the present invention, the handpiece is held near the center of gravity as described above, but the cable 14 passes through the auxiliary holder 16 and hangs below the grasping hand. No moment is generated and the handpiece body 1
0 and the weight of the cable 14 is only placed on the hand.

In practice, even if the mounting position of the auxiliary holder 16 is determined according to the operating conditions of the surgeon, it is not always necessary to use the auxiliary holder 16 in a well-balanced state. 14 at the rear end of the handpiece body 10 has the advantage that the extra moment caused by it can be eliminated.

In addition, as in the present invention, by providing the auxiliary holder 16 as a gripping part that has a certain angle with respect to mechanical vibrations, it is possible to prevent vibrations in the longitudinal direction of the handpiece, which conventionally required no hand force. Good surgery can be achieved with sufficient force and a stable grip of the handpiece.

[Effects of the invention] As explained above, according to the invention, the handpiece body is provided with an auxiliary holder, and the cables for power supply and cooling water supply are passed through the auxiliary holder from near the center of gravity of the handpiece body. Since the cable is attached to the rear end of the handpiece and pulled out to the outside, the moment generated by the cable placed at the rear end can be effectively eliminated, reducing the weight on the surgeon's hand and making the handpiece easier to operate. can be obtained.

Furthermore, it can easily respond to mechanical vibrations, making it possible to perform ultrasonic surgery in a stable state.

[Brief explanation of the drawing]

1 is a side view and a top view showing a preferred embodiment of the ultrasonic surgical handpiece according to the present invention; FIG.
The figure is an explanatory diagram showing the installation position of the auxiliary holder.
FIG. 4 is an explanatory diagram showing how to hold the handpiece of the present invention, FIG. 4 is an explanatory diagram showing how force is applied in a conventional handpiece, and FIG. 5 is an explanatory diagram showing a conventional handpiece. 10...Handpiece body, 12...Horn,
14... Cable, 16... Auxiliary holder, 18...
...Finger rest.

Claims (1)

[Scope of utility model registration request] An ultrasonic surgical handpiece including a handpiece body in which an ultrasonic vibrator is housed, and a horn that protrudes from one end of the handpiece body and is vibrated by the vibrator, An auxiliary holder is formed protrudingly on the side surface of the handpiece body at or near the center of gravity, and a cable for supplying power and cooling water to the ultrasonic transducer is routed from the main body through the auxiliary holder to the center of gravity or the vicinity thereof. 1. A handpiece for ultrasonic surgery, characterized in that the handpiece extends outward so that no rotational moment is generated from the vicinity, and the main body and the auxiliary holder are configured as a gripping part.