JPS5951844A - Liquid injection apparatus for ultrasonic knife - 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] This invention relates to a sterile water injection device installed in a camping area.

Means for crushing or emulsifying tissue by concentrating ultrasonic energy has been applied to many fields such as tumor removal and stone destruction, and has achieved remarkable effects.

At this time, in order to quickly aspirate and discharge the crushed and emulsified flexible unnecessary tissue including blood outside the surgical area, a discharge pipe is provided in the horn of the scalpel, and in order to ensure smooth discharge. It is necessary to inject sterile water into the tip of the horn. Misfire 1 is related to the improvement of this liquid injection device.

Conventionally, the most commonly used type of liquid injection device is one in which the liquid is supplied to the surgical field through the gap between the discharge pipe coaxially extending through the center of the horn and the outer shell of the horn. It was a liquid injection device having an annular water supply channel folk at the tip as shown in FIG. In this method, liquid is injected in an annular manner, so the vaginal fluid is dispersed over a relatively wide area, and the outer periphery of the drain tube 102 can be cooled, thereby preventing solidification of unnecessary tissue inside the drain tube. It had the advantage of preventing vines. However, since the water supply channel is close to the outlet of the discharge pipe, some of the unnecessary tissue sucked into the discharge pipe ends up at the tip of the annular water supply channel, which prevents smooth liquid injection. Particularly, due to gravity, unnecessary tissue is extremely stuck in the region A shown in Figure 1, and as a result, the injected liquid, which was initially relatively well dispersed and flowing down, gradually becomes obstructed. It has been found that there are disadvantages such as non-uniform flow and the need for cleaning the membrane to remove deposits.

The present invention was made in view of the above circumstances, and it is designed to keep the mouth of the injection tube relatively distant from the mouth of the discharge pipe to prevent the attachment of unnecessary tissue as described above.
The tube is removed so that parts of the injection tube that are relatively easily contaminated with unnecessary tissue, such as the vicinity of the tip, can be cleaned or replaced; It is constructed with a ring that can be adjusted so that the liquid tube is placed in the most convenient position in the arrangement cap, such as the top of the horn mouth, and is a device that detects and removes defects in conventional cleaning devices. This was done to provide this service.

The present invention will be described below based on embodiments with reference to the drawings.

FIG. 2 is a schematic explanatory diagram of an ultrasonic scalpel equipped with a cleaning device according to the present invention.
) respectively indicate the state in which the two are combined.

In this scalpel device, numeral 1 is a pawn that applies ultrasonic vibration for tissue disruption and emulsification, 2 is an oscillator, and 3 is a hand case that accommodates these. A coaxial discharge pipe 4 is provided in the center of the horn 1, and unnecessary tissue is sucked into the extraction pipe and discharged to the outside via the discharge tube 5. However, other than the pawn (3) and the hand case 3, they are not directly related to the present invention, so they will not be described in detail.

The present invention is characterized by a cap 6 that is fitted onto the pawn 1 and whose rear end is detachably attached to the front end of the hand case 3 in the scalpel as described above.

In this example, several flanges are attached to the hand case by screwing, but other means may be used. Further, the tip of the cap 6 has an opening 7a' with its front surface aligned, and the cap 6 is rotated so that water is poured onto the top of the pawn tip 1a when pouring liquid. A liquid injection tube 7 for sterile water is provided on the band 8 positioned above. The tube 7 is preferably made of transparent hard plastic or the like.

Furthermore, as shown in FIG. 2, in the horn 1, a plurality of grooves 9 are provided at predetermined intervals along the outer periphery of the tip of the horn that is exposed after the cap 5 is inserted. The grooves 9 are usually parallel, but some deformation is allowed. In this case, when sterile water is poured into the tip 1a of the horn from the outlet of the injection tube, the water travels around the outer circumference of the horn and The water flows down the groove toward the tip of the horn, and the separated sterile water is supplied to a wide area of the surgical field from the tip of the horn.As a result, the tip of the horn, which generates heat due to vibration, is almost completely removed. The entire circumference is cooled, which prevents clogging of the exhaust pipe due to heat generation.
- It also has the effect of

The present invention is based on the above configuration, and is an ultrasonic scalpel whose basic structure is a coaxial discharge pipe provided in the center of the pawn. A tube is attached through which sterile water is supplied to the surgical field. The gear is removable and disposable, making it much easier to clean than conventional devices of this type. In addition, since the liquid injection tube has an opening L1 at the rear of the tip of the horn, the sterilized water is transmitted to the outer circumference of the horn, and especially when grooves are drilled, it flows inside each groove toward the tip of the horn. It is convenient because it flows down and is supplied to a wide area of the surgical field. In this way, the tip of the horn needs to be cooled to prevent unnecessary tissue from sticking due to heat generation at the tip of the horn.Furthermore, in the present invention, the injection tube supplies sterile water to the surgical field. It has many advantages, such as being able to be adjusted to the most convenient position, and is extremely useful when applied to ultrasonic scalpels.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram showing an example of a conventional liquid injection device, and Figure 2 (
1) and (11) are explanatory perspective views showing an ultrasonic scalpel in which the device of the present invention is installed previously, and the same figure (11D is a front view showing another aspect of the device of the present invention. 1... Tissue disruption/ Emulsifying horn, 2... Thrump, 3
... Hand case, 4 ... Discharge pipe, 5 ... Discharge tube, 6 ... Cap, 7 ... Liquid injection tube, 8
...band, 9...groove. Special RQ applicant Mochiju” Pharmaceutical Co., Ltd.

Claims (2)

[Claims] (1) In an ultrasonic scalpel that has a horn for tissue disruption and emulsification at the front and a coaxial discharge pipe in the center of the horn, the leading edge of the scalpel is located slightly behind the leading edge of the horn. a cap that is fitted into the horn and whose rear end is removably attached to the front end of the hand case of the ultrasonic scalpel; 1. A liquid injection device for an ultrasonic scalpel, characterized in that the liquid injection device for an ultrasonic scalpel is equipped with a liquid injection tube for sterile water, which is equipped with a metal and can be positioned at a predetermined position on the outer periphery of the cap. (2) In an ultrasonic scalpel having a horn for tissue disruption and emulsification in the front part and a coaxial discharge pipe in the center of the horn,
A cap is provided, the distal end of which is positioned slightly rearward of the distal end of the horn, and is fitted into the horn, and whose rear end is removably attached to the front end of the hand case of the ultrasonic scalpel. , furthermore, the tip of the cap has an opening that aligns the front surface of the cheekbones, and
A liquid injection tube for sterile water is attached to the cap so that it can be positioned at a predetermined position on the outer circumference of the horn, and the sterile water is injected along the axial direction of the horn at predetermined intervals around the outer circumference of the tip of the horn. Constructed by drilling multiple grooves to guide
A liquid injection device for ultrasonic scalpels with all the following features.