KR20180039595A

KR20180039595A - Harmonic scalpel for surgical operation having blade which has improved cooling efficiency and operability

Info

Publication number: KR20180039595A
Application number: KR1020180036999A
Authority: KR
Inventors: 최낙구
Original assignee: (주)휴러스트
Priority date: 2018-03-30
Filing date: 2018-03-30
Publication date: 2018-04-18
Also published as: KR102011503B1

Abstract

The ultrasonic cutter for surgical operation according to the present invention comprises a pair of ejection holes 221a and 221b which are spaced apart from each other by a certain distance by ejecting gas to one side of the upper surface of the blade 22, A pair of roofs 222a and 222b which cover the upper portions of the pair of ejection holes 221a and 221b from adjacent positions and which are opposed to each other and form a pair of ejection outlets 230a and 230b, A plurality of scattering protrusions 240 having a predetermined height between a pair of outlets 230a and 230b so that gas ejected from the pair of outlets 230a and 230b can be scattered around; And a pressure sensing switch 50.
The ultrasonic cutter for surgical operation according to the present invention can cool the tip generated during ultrasonic cutting used in surgical operation using laparoscope to prevent necrosis of tissues due to excessive heat contact, The pressure of the cooling gas pushes the tissue next to the blade to secure the perimeter view of the operation. The gas ejected from the gas ejection hole is dispersed without being concentrated to one place, thereby causing no vibration of the surrounding tissues. There is an effect that the securing is easier and the operation failure due to the tissue debris is remarkably small.

Description

Technical Field [0001] The present invention relates to an ultrasonic cutter for a surgical operation having a blade having improved cooling efficiency and operability,

The present invention relates to an ultrasonic cutting apparatus for surgical operation, and more particularly, to a method and apparatus for cooling a tip generated during ultrasonic cutting used in surgical operation using a laparoscope, And an ultrasonic cutter for surgical operation having a blade having improved cooling efficiency and operability.

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", which is related to an ultrasonic cutting machine, comprises an ultrasonic 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 .

To solve this problem, Korean Patent Laid-open Publication No. 10-2017-0122694, filed on Nov. 06, 2017, which is filed by the present inventor, discloses an ultrasonic cutting machine for surgical operation. According to the patent, as shown in FIG. 1, a blade shaft is provided along the outer surface of the flow path so that a cooling gas for ultrasonic wave for a surgical operation flows, and an internal flow path is formed in the vicinity of the end to enter the blade shaft. And a blade (12) having a plurality of cooling gas ejection holes (120) through which the cooling gas flowing out from the inner flow path is ejected.

However, in the conventional ultrasonic cutter for surgical operation as described above, the tissue next to the blade is pushed out by the jetted gas to secure the perimeter view of the operation, but in some cases, the gas ejected from the gas ejection hole is moved to one position, There is a problem that the surgical field is often poor. In addition, there is a problem that operation failure may occur due to contamination of various spots or the like on the inner spring.

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, It is possible to prevent the necrosis of the tissue by the pressure of the cooling gas ejected from the blade and to push out the tissue next to the blade to secure the perimeter view of the operation, The present invention provides a ultrasonic cutter for surgical operation which is provided with a dispersing protrusion between balls to disperse the gas ejected from the gas ejection hole without being focused on one spot, thereby preventing vibration of the surrounding tissues, will be.

According to an aspect of the present invention, there is provided an ultrasonic cutter for surgical operation comprising a blade having improved cooling efficiency and operability,

A blade shaft (20) having an oil passage (200) formed along an outer surface thereof so as to allow cooling gas to flow and an inner oil passage (201) And a blade (22) having a plurality of cooling gas ejecting portions (220) through which a cooling gas flowing out from the nozzle (201) is ejected, the ultrasonic cutting machine comprising:

The cooling gas spouting unit 220 is provided on the upper surface of the blade 22,

A pair of ejection holes 221a and 221b spaced apart from each other by ejecting gas to one side of the upper surface of the blade 22;

A position facing each of the pair of ejection holes 221a and 221b from a position close to the left and right ends of the blade 22 is opened so that a pair of ejection outlets 230a and 230b are formed A pair of roofs 222a, 222b;

A plurality of scattering protrusions 240 having a predetermined height between a pair of outlets 230a and 230b so that the gas ejected from the pair of outlets 230a and 230b can be scattered around; And

And a pressure sensing and opening part (50) that blocks the plurality of cooling gas ejection holes (220) when the blade (22) is pressed and releases a plurality of cooling gas ejection holes (220)

The pressure sensing opening / closing part (50)

A head (500) protruding from the tip of the blade (12);

A stem (502) extending rearward of the head (500) and advancing or retracting along a cavity inside the blade (12); And

And is provided with a concave groove 503 for maximizing the resistance against the gas pressure introduced from the gas inflow hole 520 and a groove 522 at the edge of the gas inflow port 520 And a circular opening and closing part 505 for blocking or starting the inflow of gas into the cavity of the blade 22 by close contact with or separation from the gas inlet 520. [ do.

The ultrasonic cutter for surgical operation according to the present invention can cool the tip generated during ultrasonic cutting used in surgical operation using laparoscope to prevent necrosis of tissues due to excessive heat contact, The pressure of the cooling gas pushes the tissue next to the blade to secure the perimeter view of the operation. The gas ejected from the gas ejection hole is dispersed without being concentrated to one place, thereby causing no vibration of the surrounding tissues. Not only is it easier to secure, but also the operation failure is remarkably reduced due to the tissue residue, thereby improving the operability.

1 is a perspective view schematically showing a handpiece of a conventional ultrasonic cutting machine for surgical operation,
2 is a perspective view schematically illustrating a handpiece of an ultrasonic cutting machine for surgical operation according to the present invention,
FIG. 3 is a cross-sectional view of the ultrasonic cutter for surgical operation of FIG. 2, in which a flow path 200 is provided along the outer surface of the blade shaft 20 FIG.
FIG. 4 is a perspective view of an example of a blade 22 provided in the ultrasonic cutter for surgical operation of FIG. 2 and having a plurality of cooling gas ejection holes 220 through which cooling gas is ejected.
5 is a perspective view illustrating a blade structure applied to a handpiece of an ultrasonic cutter for surgical operation according to a second embodiment of the present invention, and FIG.
6 and 7 are sectional views for explaining the detailed structure and operation effects of the ultrasonic cutter handpiece to which the structure of FIG. 5 is applied.

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. 2 is a schematic perspective view of the ultrasonic cutter for surgical operation according to the present invention. FIG. 3 is a perspective view of the ultrasonic cutter for surgical operation according to the present invention. An example of a blade shaft 20 in which an internal flow path 201 is formed to extend in the vicinity of an end portion is shown in a perspective view. FIG. 4 is a perspective view showing an example of the blade 22 provided in the ultrasonic cutter for surgical operation of FIG. 2 and having a plurality of cooling gas ejection holes 220 through which cooling gas is ejected.

2 to 4, the handpiece structure of the ultrasonic cutter for surgical operation according to the present invention is characterized in that the flow path 200 is installed along the outer surface so that the cooling gas flows, and the inner flow path 201, And a blade 22 having a plurality of cooling gas ejecting portions 220 extending from the blade shaft 20 to eject a cooling gas flowing from the inner flow path 201, .

A pair of ejection holes 221a and 221b which are spaced apart from each other by a certain distance by ejecting gas to one side of the upper surface of the blade 22,

A position facing each of the pair of ejection holes 221a and 221b from a position close to the left and right ends of the blade 22 is opened so that a pair of ejection outlets 230a and 230b are formed The pair of roofs 222a, 222b, and

And a plurality of scattering protrusions 240 having a predetermined height between a pair of discharge ports 230a and 230b so that gas ejected from the pair of discharge ports 230a and 230b can be scattered around.

Thus, the ultrasonic wave cutting machine for surgical operation according to the present invention can cool the tip generated at the ultrasonic cutting used in surgical operation using the laparoscope to prevent necrosis of the tissue due to excessive heat contact, The pressure of the cooling gas ejected from the blade pushes the tissue next to the blade so as to secure the perimeter view of the operation.

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.

Particularly, according to the present invention, the gas ejection holes opposed to each other are formed to be long and the dispersion projections are provided between the gas ejection holes, so that the gas ejected from the gas ejection holes is dispersed without being focused on one spot, It is dispersed without focusing on one place. Therefore, since the dispersed gas does not cause the vibration of the surrounding tissue to be collected, it is easier to secure the visual field in laparoscopic surgery.

FIG. 5 is a perspective view of a blade structure applied to a handpiece of an ultrasonic cutter for surgical operation according to a second embodiment of the present invention. FIGS. 6 and 7 show a detailed structure of the ultrasonic cutter handpiece to which the structure of FIG. Sectional view for explaining the action and effect.

Referring to FIG. 5, the ultrasonic cutter handpiece structure for surgical operation according to the present invention is configured such that a plurality of cooling gas ejection holes 220 are blocked when the blade 22 is pressed against the tip of the blade 22, And a pressure sensing switch 50 for opening the pressure sensing switch 50.

Referring to FIG. 6, the pressure sensing switch 50 provided in the ultrasonic cutter handpiece structure for surgical operation according to the present invention includes:

A head 500 protruding from the tip of the blade 12,

A stem 502 extending rearward of the head 500 and moving forward or retracting along the cavity inside the blade 12, and

A stem 502 is formed to extend from the end of the stem 502 and has a recess 503 for maximizing the resistance against gas pressure introduced from the gas inlet hole 520 and a groove 522 at the edge of the gas inlet 520 And a circular opening and closing part 505 for blocking or starting the inflow of the gas into the hollow part of the blade 22 by close contact or separation with the gas inlet 520.

When the head 500 protruding from the tip of the blade 22 touches the tissue T, the ultrasonic cutter handpiece having such a structure is retracted backward while pressure is applied. Since the stem 502 is configured to extend rearwardly of the head 500 and move forward or backward along the inside of the blade 22, the retracting action of the head 500 is transmitted along the stem 502. Thereby opening and closing the gas supply hole 520 in the blade corresponding to the end of the inner flow path 201.

Therefore, the cooling gas is continuously supplied from the gas inflow hole 520 and the tissue T approaches the pressure sensitive system closure 50 when the physician approaches the blade 22 to the tissue T so as to collect the operation. And pushes it backward while touching the head 500 of the apparatus. The stem 502 is pushed by pushing the head 500 of the pressure sensing switch 50 and the circular opening and closing part 505 cuts off the gas inlet 520 so that the cooling gas So that it can no longer be introduced. When the contact with the tissue T is released during the surgical operation using the ultrasonic cutting machine, the gas inlet 520 is opened again and the cooling of the blade is continued.

On the other hand, 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. As the blade 22 is heated excessively 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. At this time, a plurality of cooling gas ejection holes 220 are opened to allow the cooling gas to pass through the inside of the blade 20 to be ejected to the outside, and the blade 22 is cooled. When the blade is approached to the tissue T to perform the cutting operation again, the pressure sensing switch 50 cuts off the plurality of cooling gas ejection holes 120 to block the cooling gas.

According to the present invention, a groove 522 is provided at the edge of the gas inlet port 520 and a concavity and convexity 504 which is fitted in the groove 522 is provided at the edge of the circular opening and closing part 505, And the concave portion 503 is formed to extend from the end of the stem 502 so that the resistance against the gas pressure introduced from the gas inflow hole 520 is increased so as to be more reliably opened. This makes it possible to more reliably open the cooling gas inlet even when the frictional resistance is generated due to the tissue or foreign matter that is generated during the operation procedure, and thus the occurrence of operational errors is remarkably reduced.

20: blade shaft
200: an oil passage 201: an internal oil passage
22: Blade
221a, 221b: a pair of ejection holes
230a, 230b: a pair of discharge ports
222a, 222b: a pair of roofs
240:
50: Pressure sensing switch
500: Head 502: Stem
503: recess 504: concave and convex
505:
520: gas inflow hole 522: groove

Claims

A blade shaft (20) having an oil passage (200) formed along an outer surface thereof so as to allow cooling gas to flow and an inner oil passage (201) And a blade (22) having a plurality of cooling gas ejecting portions (220) through which a cooling gas flowing out from the nozzle (201) is ejected, the ultrasonic cutting machine comprising:
The cooling gas spouting unit 220 is provided on the upper surface of the blade 22,
A pair of ejection holes 221a and 221b spaced apart from each other by ejecting gas to one side of the upper surface of the blade 22;
A position facing each of the pair of ejection holes 221a and 221b from a position close to the left and right ends of the blade 22 is opened so that a pair of ejection outlets 230a and 230b are formed A pair of roofs 222a, 222b;
A plurality of scattering protrusions 240 having a predetermined height between a pair of outlets 230a and 230b so that the gas ejected from the pair of outlets 230a and 230b can be scattered around; And
And a pressure sensing and opening part (50) that blocks the plurality of cooling gas ejection holes (220) when the blade (22) is pressed and releases a plurality of cooling gas ejection holes (220)
The pressure sensing opening / closing part (50)
A head 500 protruding from the tip of the blade 12;
A stem (502) extending rearward of the head (500) and advancing or retracting along a cavity inside the blade (12); And
And is provided with a concave groove 503 for maximizing the resistance against the gas pressure introduced from the gas inflow hole 520 and a groove 522 at the edge of the gas inflow port 520 And a circular opening and closing part 505 for blocking or starting the inflow of gas into the cavity of the blade 22 by close contact with or separation from the gas inlet 520. [ An ultrasonic cutter for surgical operation having a blade with improved cooling efficiency and operability.