KR101975258B1 - Handpiece structure of harmonic scalpel for surgical operation - Google Patents

Abstract

A handpiece structure of an ultrasonic cutter for surgical operation is disclosed. The handpiece structure of the ultrasonic cutting machine for surgical operation according to the present invention is characterized in that a flow path 100 is provided along the outer surface of the blade shaft 10 and an inner flow path 101 is formed in the vicinity of the end, And a blade (12) having a plurality of cooling gas ejection holes (120) extending from the blade shaft (10) and through which the cooling gas flowing out from the inner channel (101) is ejected.
The handpiece structure of the ultrasonic cutter for surgical operation according to the present invention can cool the tip generated at the ultrasonic cutting used in the surgical operation using the laparoscope to prevent tip necrosis due to excessive heat contact . Further, the handpiece structure according to the present invention has the effect of securing the field of view around the operation by pushing the tissue next to the blade by the pressure of the cooling gas ejected from the blade.

Description

Technical Field [0001] The present invention relates to a handpiece structure of an ultrasonic cutter for surgical operation,

The present invention relates to a handpiece structure of an ultrasonic wave cutting machine for surgical operation, and more particularly, to a method and a device for ultrasonic wave cutting using a laparoscope, To a handpiece structure of an ultrasonic cutter for surgical operation.

Laparoscopic surgery, in which a laparoscope with a camera is placed in the stomach, is applied as a technique to perform surgery with only a small hole size incision without large incision in the abdomen for surgical treatment of various diseases that may occur inside the human body . In this laparoscopic surgical procedure, an ultrasonic cutter may be used, for example, to cut a part of the body such as the stomach or colon.

An ultrasonic cutting machine refers to a surgical tool for holding a part of a body and transferring ultrasonic waves to a cutting part and cutting the part by burning it. Such ultrasonic cutting machines are known in the art.

US Pat. No. 6,893,434, entitled "Ultrasonic soft tissue cutting and coagulation systems including a retractable grasper," relates to an ultrasound transducer for generating ultrasonic waves and a gripping assembly connected to the transducer, Discloses an ultrasonic cutter comprising a component and a gripping tooth that is movable relative to the blade component along an axial direction.

Another prior art related to ultrasonic cutting machines is U.S. Patent Publication No. US 2007/0191713 'Ultrasonic Device for Cutting and Coagulating'. The prior art discloses an ultrasonic cutter comprising an ultrasonic waveguide, a blade connected to the end of the ultrasonic waveguide, a tissue pad and a clamping member movable relative to the blade.

Korean Patent Laid-Open Publication No. 10-2015-0008153 discloses an ultrasonic transducer having a body, an ultrasonic transducer operable to convert electric power into ultrasonic vibration, a shaft extending in the distal direction from the body and defining a longitudinal axis, Wherein the end effector includes an ultrasonic blade that acoustically communicates with the ultrasonic transducer, the ultrasonic blade includes a recessed region having a plurality of recesses, Wherein the cross-sectional area of the seth region is tapered to decrease along the length of the recessed region.

In the surgical instrument to which the ultrasonic wave is applied as described in the above prior art, much heat can be generated in the transducer in which the ultrasonic wave is transmitted and received, and it is necessary to be cooled or replaced when the operation time is prolonged. However, cooling or replacement during the procedure can delay the procedure time and cause various problems due to the configuration of the device. Therefore, a means is required to allow the ultrasonic cutter to be maintained at a constant temperature range during the procedure, but the prior art does not disclose this.

Another conventional ultrasonic cutting machine structure for solving such a problem is disclosed in Korean Patent Laid-Open No. 10-2016-0107492. According to the above-described patent, the inflow tube that is introduced into the interior of the ultrasonic cutting machine equipped with the ultrasonic transducer for cutting or sealing the body tissue, the discharge tube which is discharged from the inside of the ultrasonic cutting machine to the outside, And a supply pump connected to the cooling tank and the supply conduit for supplying a cooling fluid to the inlet tube, wherein the inlet tube and the outlet tube are connected to the cooling tank by cooling the ultrasonic transducer cooling So that the circulation of the cooling fluid is enabled.

However, since the conventional ultrasonic cutting machine as described above cools the inside of the ultrasonic cutting machine and indirectly cools the jaw, cooling of the end of the jaw can not be completed, so that a process of removing the ultrasonic cutting machine during the operation and cooling the same is still required .

SUMMARY OF THE INVENTION The present invention has been developed in order to solve the above-mentioned problems, and it is an object of the present invention to provide a laparoscope which can cool heat generated during ultrasonic cutting, The present invention also provides a handpiece structure for an ultrasonic cutter for surgical operation,

The handpiece structure of the ultrasonic cutter for surgical operation according to the present invention can cool the tip generated at the ultrasonic cutting used in the surgical operation using the laparoscope to prevent tip necrosis due to excessive heat contact . Further, the handpiece structure according to the present invention has the effect of securing the field of view around the operation by pushing the tissue next to the blade by the pressure of the cooling gas ejected from the blade.

1 is a perspective view schematically showing a handpiece of an ultrasonic cutting machine for surgical operation according to a first embodiment of the present invention,
FIG. 2 is a perspective view of a blade shaft 10 (see FIG. 1) provided with an ultrasonic wave cutting machine for surgical operation of FIG. 1, in which a flow path 100 is provided along an outer surface thereof, FIG.
FIG. 3 is a perspective view of an example of a blade 12 provided in the ultrasonic cutter for surgical operation of FIG. 1 and having a plurality of cooling gas ejection holes 120 through which cooling gas is ejected.
FIG. 4 is a perspective view of a blade structure applied to a handpiece of an ultrasonic cutting machine for surgical operation according to a second embodiment of the present invention, FIG.
FIGS. 5 and 6 are views for explaining an example of the detailed structure of the ultrasonic cutter handpiece to which the structure of FIG. 4 is applied,
7 is a partial perspective view showing a blade structure applied to a handpiece of an ultrasonic cutter for surgical operation according to a third embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

FIG. 1 schematically shows a handpiece of an ultrasonic cutter for surgical operation according to a first embodiment of the present invention. FIG. 2 is a perspective view of the ultrasonic cutter for surgical operation according to the first embodiment of the present invention. And an inner flow path 101 is formed in the vicinity of the end of the blade shaft 10, the blade shaft 10 being shown in a perspective view. FIG. 3 is a perspective view showing an example of the blade 12 provided in the ultrasonic cutter for surgical operation of FIG. 1 and having a plurality of cooling gas ejection holes 120 through which cooling gas is ejected.

1 and 2, the handpiece of the ultrasonic cutting machine for surgical operation according to the present invention is formed in such a manner that an oil passage 100 is formed along the outer surface of the handpiece so that a cooling gas flows therethrough, And a blade 12 having a plurality of cooling gas ejection holes 120 extending from the blade shaft 10 to eject a cooling gas flowing from the inner channel 101 do.

The handpiece structure of the ultrasonic cutter for surgical operation according to the present invention can cool the heat generated during the ultrasonic cutting used in the surgical operation using the laparoscope even at the tip end to prevent tissue necrosis due to excessive heat contact can do.

Further, as shown in Fig. 3, it is possible to configure a plurality of cooling gas ejection holes 120 to face the upper surface of the blade 12. Fig. Such a structure can be expected to have an effect of preventing the phenomenon that the human body is fixed to the blade 12 as well as the cooling of the blade 12 to some extent.

FIG. 4 is a perspective view of a blade structure applied to a handpiece of a surgical ultrasonic cutting machine according to a second embodiment of the present invention, and FIGS. 5 and 6 show a detailed structure of the ultrasonic cutter handpiece using the structure of FIG. And a drawing for explaining an example and an operation effect are shown.

Referring to FIG. 4, the handpiece of the ultrasonic cutter for surgical operation according to the present invention blocks a plurality of cooling gas ejection holes 120 when pressed against the tip of the blade 12, And a pressure sensing opening / closing unit 40 for opening the pressure sensing unit 40.

5 and 6, the pressure sensing switch 40 includes a head 500 protruding from the tip of the blade 12 and a head 500 extending rearward of the head 500 to move forward or backward along the inside of the blade 12 A spring support portion 504 that extends from the inner cavity of the blade 12 to support the spring 506 and normally pushes the head 500 forward and the blade 20 is advanced A spring 506 that causes the head 500 to be retracted when the head 500 touches the human tissue and an opening and closing unit 508 that opens and closes the inner passage 101 to form the rear end of the guide unit 502.

When the head 500 protruding from the tip of the blade 12 touches the tissue T, the ultrasonic cutter handpiece having such a structure is retracted backward while pressure is applied. Since the guide portion 502 is configured to extend rearward of the head 500 and move forward or backward along the inside of the blade 12, the backward movement of the head 500 is transmitted along the guide portion 502.

The spring support 504 extends centrally from the inner cavity of the blade 12 to support the spring 506 and the spring 506 normally pushes the head 500 forward and the blade 20 advances, (500) is tilted backward when it touches the human tissue. The opening and closing portion 508 constituting the rear end of the guide portion 502 opens and closes the gas supply hole 520 inside the blade corresponding to the inner flow path 101, more specifically, the end portion of the inner flow path 101.

When ultrasonic cutting is required, the blade is advanced to the tissue (T) side to perform the operation, and at this time, the cooling gas is blocked. As it is known, the ultrasonic cutting machine has a function to seal the microvessels at the same time as cutting the tissue with the heat generated by the ultrasonic waves, so excessive cooling must be prevented. If the blade 12 is excessively warmed as the operation progresses over a wide area, the user stops the cutting for a while and waits for a short time in the empty range. 5, the pressure sensing switch 40 opens the plurality of the cooling gas ejection holes 120 by the action of the spring 506, so that the cooling gas passes through the inside of the blade 20, And the blade 12 is cooled. When the blade is approached to the tissue T to perform the cutting operation again, the pressure sensing switch 40 blocks the plurality of cooling gas ejection holes 120 to block the cooling gas.

FIG. 7 is a partial perspective view showing a blade structure applied to a handpiece of an ultrasonic cutting machine for surgical operation according to a third embodiment of the present invention. Referring to FIG. 7, the handpiece of the ultrasonic cutting machine for surgical operation according to the present invention is characterized in that the cooling gas ejection hole 120 is provided on the upper surface of the blade 12, and the first ejection hole 700 is formed on the upper surface of the blade 20 A first jetting portion 70 for jetting the cooling gas in the direction from the front end to the rear end portion and a second jetting hole 720 facing the first jetting hole 700 of the first jetting portion 70 are formed A second jetting portion 72 for jetting the cooling gas in a direction toward the front end from the rear end of the blade 20 and a second jetting portion 72 having a constant height on the right and left sides of the first jetting hole 700 and the second jetting hole 720 And a cooling gas guide portion 730 protruding to guide the cooling gas to the left and right of the blade 20. [

The blade of this structure has the effect of pushing the tissue next to the blade by the pressure of the cooling gas, thereby securing the peripheral view of the operation. When the cooling gas guide portion 730 is protruded to the left and right of the first spray hole 700 and the second spray hole 720 to guide the cooling gas to the left and right of the blade 20, It is possible not only to improve the cooling effect by increasing the flow rate but also to monitor in a state in which the state is to be monitored during operation so as to be able to monitor the state without stenosis so that a more stable view can be secured.

10: Blade shaft
100: Euro 101: Internal Euro
12: Blade
120: Cooling gas ejection hole
40: Pressure sensing switch
500: head 502: guide portion
504: spring support portion 506: spring
508:
70: First spout
700: 1st spout
72: second spout
720: 2nd spout
730: cooling gas guide portion

Claims (4)

A blade shaft (10) provided with an oil passage (100) along the outer surface so that a cooling gas flows therethrough and an inner oil passage (101) drawn into the vicinity of the end thereof;
A blade (12) extending from the blade shaft (10) and having a plurality of cooling gas ejection holes (120) through which a cooling gas flowing from the inner channel (101) is ejected; And
And a pressure sensing switch part (40) for blocking the plurality of cooling gas ejection holes (120) when the blade (12) is pressed and releasing the plurality of cooling gas ejection holes (120) Handpiece structure of surgical ultrasonic cutting machine. delete 2. The apparatus of claim 1, wherein the pressure sensing switch (40)
A head 500 protruding from the tip of the blade 12;
A guide portion 502 extending rearward of the head 500 and moving forward or backward along the inside of the blade 12;
A spring support 504 extending centrally from the inner cavity of the blade 12 to support the spring 506;
A spring 506 that normally pushes the head 500 forward and causes the blade 20 to advance and retract when the head 500 touches the body tissue; And
And an opening / closing part (508) for forming a rear end of the guide part (502) and opening / closing the inner flow path (101). The cooling apparatus according to claim 1, wherein the cooling gas ejection hole (120) is provided on an upper surface of the blade (12)
A first jetting portion 70 for jetting the cooling gas in a direction from the front end to the rear end of the blade 20;
A second ejection hole 720 is formed so as to face the first ejection hole 700 of the first ejection portion 70 and a second ejection hole 720 for ejecting the cooling gas in a direction from the rear end of the blade 20 toward the front end, A portion 72; And
And a cooling gas guide part 730 protruding to the left and right of the first blowing hole 700 and the second blowing hole 720 with a predetermined height to guide the cooling gas to the left and right of the blade 20 Of the ultrasonic wave cutting machine for surgical operation.

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