JPH073971U - Wrench for ultrasonic tip - Google Patents

Abstract

(57) [Abstract] [Purpose] When attaching and detaching the ultrasonic tip to the transducer side body of the ultrasonic surgical instrument, the wrench hook part of the ultrasonic tip and the wrench's slant and burr are not damaged.
An object of the present invention is to provide a wrench for an ultrasonic tip that is not dangerous to a patient. The left and right protruding inner wall surfaces 20 and 22 of the main body 10 of the wrench A are formed into conical curved surfaces so as to be in close contact with the outer peripheral surface of the conical wrench hook portion 84 of the ultrasonic tip, and the ring-shaped portion 50 Claw portion 52,
54 is fitted in a groove provided in the wrench hook portion 84.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wrench that allows an ultrasonic surgical instrument tip in an ultrasonic surgical instrument to be attached to and detached from a transducer body, and more particularly to a wrench that attaches and detaches an ultrasonic tip used in a cataract surgery.

[0002]

[Prior art]

 The ultrasonic surgical instrument transmits ultrasonic vibrations from a vibrator to an ultrasonic tip, and crushes living tissue by the ultrasonic vibrations at the tip of the tip.

Here, in the ultrasonic chip, as shown in FIG. 6, a thread groove portion 90 is formed at a root end portion so as to be attachable / detachable to / from the vibrator-side main body, and vibration is generated through the screw groove portion 90. It is attached to and detached from a transmission pipe (not shown) integrally formed with the child (not shown). Further, a substantially wrench hook portion 91 is formed on the front side of the screw groove portion 90 of the ultrasonic chip.

Here, in the conventional ultrasonic tip wrench B, the wrench B has a concave cutout portion 95, and the cutout portion 95 is fitted into the wrench hook portion 91 of the ultrasonic tip to make the ultrasonic wave. The tip was rotated around the longitudinal axis and fixed to the transfer tube. Further, as a wrench for mounting the ultrasonic tip having the above-described shape, there is also a wrench in which a square hole is simply provided in a disk-shaped member. Further, in an ultrasonic tip having a conical wrench hook part, there is a wrench provided with a circular hole and a claw on the disk member, and the ultrasonic tip is inserted into the circular hole to make the claw ultrasonic wave. Attach by fitting it into the groove provided on the wrench hook of the chip.

[0005]

[Problems to be solved by the device]

 However, in the conventional ultrasonic tip wrench, there has been a problem that the lent hook portion of the ultrasonic tip and the wrench itself are damaged. That is, in the case of an ultrasonic tip wrench having a substantially casing-shaped wrench hook portion, when the ultrasonic tip is rotated and tightened to be attached to the transducer-side main body such as the transmission tube, the ultrasonic tip has a substantially casing-like shape. The corner of the wrench hook hits the side of the notch or hole of the wrench, causing slack and burrs. In addition, even in the case of an ultrasonic tip rench having a conical wrench hook, since the only part of the wrench that comes into contact with the ultrasonic tip is the claw, an excessive load is applied to the claw and the claw and groove are There were problems such as blister and burr.

Here, in cataract surgery, a protective tube surrounding an ultrasonic tip for cleaning and cooling the affected part of the eye (inside the cornea), maintaining the pressure in the anterior chamber of the eye, and aspirating crushed tissue. There is a surgical procedure in which a perfusate is flown between the ultrasonic tip and a protective tube to supply the perfusate into the eye to perform surgery, but damage to the ultrasonic tip or wrench such as burrs or burrs may occur. If so, metal fragments will also flow into the eye, which is dangerous to the patient. Even if no metal piece is generated, if the ultrasonic tip has burrs, the surgical glove of the operator will be damaged, which will be an obstacle to keeping cleanliness.

Therefore, the present invention does not cause damage to the wrench hook portion of the ultrasonic tip or the wrench or burrs of the wrench when the ultrasonic tip is attached to or detached from the transducer, and the ultrasonic wave is not dangerous to the patient. It is intended to provide a tip wrench.

[0008]

[Means for Solving the Problems]

 The ultrasonic tip wrench according to the present invention is an ultrasonic tip wrench in which an ultrasonic tip having a substantially conical wrench hook portion can be attached to and detached from the transducer side body. It has a substantially conical curved surface that closely adheres to the substantially conical curved surface, and a claw portion that fits into the groove portion provided in the wrench hook portion.

[0009]

[Action]

 In the wrench for the ultrasonic tip according to the present invention, a substantially conical curved surface that closely adheres to the substantially conical curved surface of the substantially conical wrench hook portion of the ultrasonic tip and a claw portion that fits into a groove provided in the root portion are provided. Since the wrench hook portion has a substantially conical curved surface and the substantially conical curved surface of the wrench of the present invention in wide contact with each other, an area in which the wrench and the ultrasonic tip are in close contact with each other is increased. The load on the groove part of the part is reduced, and it becomes difficult to cause sludge and burrs.

[0010]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the ultrasonic tip wrench according to the present invention has a main body 10 and a ring-shaped portion 50. The main body 10 and the ring-shaped portion 50 are screwed by a screw 70. It is fixed.

Here, the main body portion 10 is integrally formed of synthetic resin, and in the main body portion 10, as shown in FIGS. 1 and 2, the left protruding portion 14 is formed on the plane of the substantially circular flat plate-shaped disc portion 12. And a right protrusion 16 are provided. Here, the left protruding portion 14 and the right protruding portion 16 have a substantially half-ring shape, and are symmetrically provided at the upper end and the lower end with voids 28 and 30, respectively. The left protrusion 14 and the right protrusion 16 have flat portions 23 and 25 parallel to the flat portion of the main body 10 having a substantially semi-ring shape, and exhibit a curved surface perpendicular to the flat portion of the main body 10. It has an outer wall surface 24 of the left protruding portion and an outer wall surface 26 of the right protruding portion. Further, the left protruding portion 14 and the right protruding portion 16 have a curved left protruding portion inner wall surface 20 and a curved right protruding portion inner wall surface 22 inside, and both of these protruding portion inner wall surfaces 20 and 22 form a substantially conical curved surface. When mounting the ultrasonic tip, the conical surface of the wrench hook, which has a substantially conical shape, comes into contact. Further, an opening portion 18 provided in the main body portion 10 is continuously provided on the inner wall surfaces 20 and 22 of both the protruding portions. Further, the body portion 10 is provided with screw insertion holes 32 and 34 at symmetrical positions.

Next, the ring-shaped portion 50 is made of metal and has a substantially ring shape as shown in FIGS. 1 and 3, and the ring-shaped portion inner wall surfaces 64 and 66 of the ring-shaped portion 50 have the ring-shaped portion 5. It is formed perpendicularly to the plane portion of the ring-shaped portion 50 so that 0 fits into the main body portion 10. Claws 52 and 54 are extended at the upper and lower ends of an opening 68 provided at the center of the ring-shaped portion 50. Here, the claws 52 and 54 are slightly longer than the widths of the left and right protrusions 14 and 16 in the body 10 so that the claws 52 and 54 form a protrusion when assembled to the body 10. Further, the claw portions 52 and 54 have flat portions 53 and 55 which are parallel to the left and right so as to be fitted into the void portions 28 and 30 in the main body portion 10. It has inclined surfaces 56 and 58 with respect to the center point, and these inclined surfaces 56 and 58 contact the bottom surface of the groove portion provided in the wrench hook portion of the ultrasonic tip. Further, the ring-shaped portion 50 is provided with screw holes 60 and 62 at symmetrical positions.

A usage state of the ultrasonic tip wrench having the above-described configuration will be described. The ultrasonic tip 80 used in the wrench for the ultrasonic tip according to the present invention has a structure as shown in FIG. 4, and the outer wall surface of the wrench hook portion 84 connected to the end of the cylindrical portion 82 has a substantially conical shape. The outer wall surface of the wrench hook portion 84 is provided with grooves 86 and 88 symmetrically with each other. Further, the wrench hook portion 84 is continuously provided with a thread groove portion 90 provided with a thread groove.

When the ultrasonic chip 80 based on the above configuration is attached to the transmission tube integrally formed with the transducer, the ultrasonic chip 80 is attached to the opening 68 and the main body of the ring-shaped portion 50 from the tip of the tubular portion 82. 5A, the slanted surfaces 56 and 58 of the claw portions 52 and 54 of the ring-shaped portion 50 are inserted into the openings 18 of the portion 10, and the groove portions 86 and 88 of the ultrasonic tip 80 (see FIG. 4). 5), the claws 52 and 54 are fitted so that the outer wall surface of the wrench hook 84 is at the same time as the left and right protrusions 14 of the main body 10, as shown in FIG. 5B. The inner wall surfaces 20 and 22 of the left and right protruding portions of 16 are closely attached. In this state, the wrench A is rotated clockwise and attached to the transmission pipe. According to the ultrasonic tip wrench according to the present invention, not only the claw portions 52 and 54 but also the left and right protrusion inner wall surfaces 20 and 22 of the left and right protrusion portions 14 and 16 contact the outer wall surface of the wrench hook portion of the ultrasonic tip. Therefore, the rotational force is not excessively applied to the claws 52 and 54, and slag and burrs do not occur.

[0016]

[Effect of device]

 As described above, according to the ultrasonic tip wrench according to the present invention, when the ultrasonic tip is attached to or detached from the body of the transducer side, damage such as the wrench hook portion of the ultrasonic tip or the bluntness or burrs of the lench is prevented. Since it does not occur and debris is not mixed into the perfusate, it does not pose a risk to the patient, and it does not hurt the surgeon's surgical gloves and keeps cleanliness.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an ultrasonic tip wrench according to the present invention.

2A and 2B are views showing a main body portion of an ultrasonic tip wrench according to the present invention, in which FIG. 2A is a front view and FIG.
3 is a cross-sectional view taken along line A-O-B in FIG.

3A and 3B are diagrams showing a ring-shaped portion of the wrench for an ultrasonic tip according to the present invention, FIG. 3A is a front view, and FIG.

4A and 4B are views showing an ultrasonic tip using an ultrasonic tip wrench according to the present invention, in which FIG. 4A is a plan view and FIG.
Is a front view.

5A and 5B are explanatory views showing a usage state of the ultrasonic tip wrench according to the present invention, wherein FIG. 5A is a plan sectional view and FIG. 5B is a front sectional view.

FIG. 6 is a perspective view showing a conventional ultrasonic tip wrench and its use state.

[Explanation of symbols]

 10 main body part 12 disk part 14 left protruding part 16 right protruding part 18 opening 20 left protruding part inner wall surface 22 right protruding part inner wall surface 50 ring-shaped part 52, 54 claw part 60, 62 screw hole 68 opening part

Claims (1)

[Scope of utility model registration request] 1. An ultrasonic tip wrench in which an ultrasonic tip having a substantially conical wrench hook portion can be attached to and detached from a vibrator-side main body. An ultrasonic tip wrench having a conical curved surface and a claw portion that fits into a groove provided in the wrench hook portion.