KR20180063493A

KR20180063493A - An Ultrasonic Applier with a Structure of Improved Thermal Conductivity for Medical Use

Info

Publication number: KR20180063493A
Application number: KR1020160163261A
Authority: KR
Inventors: 한준모
Original assignee: 한준모
Priority date: 2016-12-02
Filing date: 2016-12-02
Publication date: 2018-06-12

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a medical ultrasound applicator having a heat conduction improving structure, and more particularly, to a medical ultrasound applier having a thermal conduction improving structure for rapidly dissipating heat of a jaw to shorten a time required for the operation. The medical ultrasound applier of the thermal conductivity enhancing structure comprises: a working tube 14 extending in a hollow tube shape; A coarse unit (11) movably coupled at one end to the end of the working tube (14); And a cutter unit (13) formed at an end of a transmitting member (12) extending along the inside of the operating tube (14) and capable of contacting the coarse unit (11) and converting ultrasonic waves into heat, (13) extends in a curved shape with respect to an extending direction of the transmitting member (12).

Description

TECHNICAL FIELD [0001] The present invention relates to a medical ultrasound applicator having improved thermal conductivity,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a medical ultrasound applicator having a heat conduction improving structure, and more particularly, to a medical ultrasound applier having a thermal conduction improving structure for rapidly dissipating heat of a jaw to shorten a time required for the operation.

Laparoscopic surgery, in which a laparoscope with a camera attached to its stomach is operated without cutting the abdomen, is commonly used for the treatment of various internal human diseases. In laparoscopic surgery, for example, an ultrasonic cutter may be used to cut a part of the body, such as the stomach or colon. An ultrasonic cutting machine is a surgical tool for holding a part of a body and transmitting an ultrasonic wave to a cutting part and cutting the part into a heat. Ultrasonic cutting machines having various structures are known in the art.

Japanese Patent Application Laid-Open No. 10-2014-0147843 discloses a transducer for generating ultrasonic waves; A transfer rod which is formed in a cylindrical bar shape and transfers the ultrasonic waves generated from the oscillator to the one end from the other end to which the oscillator is connected; A cutter that extends from one end of the transmission rod and transmits a surgical site using ultrasonic waves transmitted from the transmission rod, wherein a gain step is started at a first oscillation node closest to the one end of the transmission rod A cutter in which a part of a circular cross-sectional area is formed flat from a point corresponding to the first vibration node; A rod cover surrounding the transmission rod with a plurality of vibration nodes formed when ultrasonic waves are transmitted through the cutting rod as connection points; And a tilting coupling to one end of the rod cover, the tilting mechanism being provided at a position opposite to the cutter and engaging with the cutter to grip the surgical site.

U.S. Patent No. 6,893,434 discloses an ultrasonic transducer for generating ultrasonic waves, a gripping assembly connected to the transducer, and a gripping assembly including an ultrasonic cutter including a blade part and gripping teeth movable along the axial direction with respect to the blade part, .

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.

The ultrasonic applicator disclosed in the prior art does not disclose the structure of the cutting unit that effectively cuts the cutting portion while keeping the cutting peripheral portion securely and firmly. In addition, it is advantageous that the heat of the jaw is rapidly discharged after the incision because heat is generated due to the ultrasonic wave in the jaw portion corresponding to the incision site during the surgical procedure. However, the prior art does not disclose a coarse unit capable of such rapid heat emission.

The present invention has been made to solve the problems of the prior art and has the following purpose.

Prior Art 1: Patent Publication No. 10-2014-0147843 (published by IREMED Co., Ltd., December 30, 2014) Ultrasonic surgical instrument Prior Art 2: U.S. Patent No. 6,893,434 (Axya Medical, Inc, published May 17, 2005) Ultrasonic Soft Tissue Cutting and Coagulation Systems Including a Retractable Grasper Prior Art 3: United States Patent Application Publication 2007/0191713 (Stephen E. Eichmann et al., Published August 16, 2007) Ultrasonic Device for Cutting and Coagulating

SUMMARY OF THE INVENTION It is an object of the present invention to provide a medical ultrasound applicator having a heat conduction enhancing structure capable of quickly dissipating heat generated from a jaw portion while effectively securing a cutting peripheral portion.

According to a preferred embodiment of the present invention, the medical ultrasonic applicator of the thermal conduction enhancing structure comprises: a working tube extending in a hollow tube shape; A coarse unit movably coupled to one end of the end of the working tube; And a cutter unit formed at an end of the transmitting member that extends along the inside of the operating tube and is capable of contacting with the coarse unit and converting ultrasonic waves into heat, .

According to another preferred embodiment of the present invention, the coarse unit comprises an operating case coupled to the operating tube and a clip fixed to the operating case, and at least a part of the clip is made of thermally conductive synthetic resin.

According to another preferred embodiment of the present invention, the thermally conductive synthetic resin is silicon, silicone rubber or a mixture thereof.

According to another preferred embodiment of the present invention, the coarse unit is composed of an operating case coupled to the operating tube and a clip fixed to the operating case, and the clip extends in both directions with respect to the center line along the longitudinal direction, And includes a plurality of buffer grooves.

According to another preferred embodiment of the present invention, at least a portion of the clip is made of silicone, silicone rubber, Teflon or a synthetic material thereof.

The ultrasonic applicator according to the present invention allows ultrasonic waves to be efficiently transmitted while the cutting portion is firmly fixed. The ultrasonic applicator according to the present invention is simple in operation and simple in construction, thereby reducing manufacturing and maintenance costs. In addition, the ultrasonic applicator according to the present invention allows the heat to be effectively discharged, thereby preventing damage to the operation part and simultaneously reducing the operation time.

FIG. 1 illustrates an embodiment of a boom assembly of an ultrasonic applicator according to the present invention.
2 shows an embodiment of an ultrasonic cutter applied to an ultrasonic applicator according to the present invention.
FIG. 3 shows an embodiment of an operating case for forming a jaw unit applied to an ultrasonic applicator according to the present invention.
FIG. 4 illustrates an embodiment of a clip for forming a jaw unit applied to an ultrasonic applicator according to the present invention.
FIG. 5 illustrates an embodiment of an ultrasonic applicator according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto. In the following description, components having the same reference numerals in different drawings have similar functions, so that they will not be described repeatedly unless necessary for an understanding of the invention, and the known components will be briefly described or omitted. However, It should not be understood as being excluded from the embodiment of Fig.

The ultrasonic applicator according to the present invention may be applied to a laparoscopic surgical procedure and may have a function of cutting the stomach, duodenum, or such an organ in the human body by ultrasound. However, it can be applied to various surgical or internal surgery procedures as needed. Cutting can be done through processes such as generation of ultrasonic waves, ultrasonic transmission to the cutting site, thermal transformation of the ultrasonic waves, and heating of the cutting area. The ultrasound transmitted to the cutting site may be, but is not limited to, for example, 1 MHz to 20 MHz. The ultrasonic generator may include a transducer, a transmission oscillator for converting an electric signal into an ultrasonic wave corresponding to a mechanical signal, and a reception oscillator for converting the reflected ultrasonic wave into an electric signal. Transducers having various structures can be applied to the ultrasonic applicator according to the present invention, and the present invention is not limited to the embodiments shown.

FIG. 1 illustrates an embodiment of a boom assembly of an ultrasonic applicator according to the present invention.

Referring to Figure 1, the ultrasonic applicator includes a working tube 14 extending in a hollow tube shape;

A coarse unit (11) movably coupled at one end to the end of the working tube (14); And a cutter unit (13) formed at an end of a transmitting member (12) extending along the inside of the operating tube (14) and capable of contacting the coarse unit (11) and converting ultrasonic waves into heat, (13) extends in a curved shape with respect to an extending direction of the transmitting member (12).

The working tube 14 can be linearly extended while being in the form of a tube having a hollow circular cross section. The operating tube 14 can be disposed inside the housing member 15 and the housing member 15 can function to protect the operating tube 14. [ The operation tube 14 allows the jaw unit 11 to be operated while protecting the transmitting member 12.

The jaw unit 11 may be composed of an operation case 111 coupled to the operation tube 14 and a clip 112 fixed to the operation case 111 and one end thereof may be connected to the operation tube 14. [ The actuating tube 14 can be moved forward or backward, for example, by means of the operating body of the applier described below. With the forward and backward movement of the operating tube 14, the jaw unit 11 can be rotated around the engaging portion.

The joining unit 11 can be made of a structure having a predetermined width and extending in the longitudinal direction and includes an operation case 111 which is rotatably connected to the operation tube 14 at one end thereof, (Not shown). The operation case 111 is rotated by the operation of the operation tube 14 so that the clip 112 fixed to the inner surface of the operation case 111 can be contacted or separated from the cutter unit 13. [

The cutter unit 13 may extend in a curved or bent shape in one direction with respect to the extending direction of the linearly extending transmission member 12 having an elliptical cross section. By such a bent structure of the cutter unit 13, the cutter unit 13 can easily approach the cut portion of the human body. The jaw unit 11 can be curved or bent in correspondence with the curved or curved shape of the cutter unit 13. [

The cutter unit 13 is bent so that the jaw unit 11 is bent at the same time so that the ultrasonic waves of the cutter unit 13 can be easily converted into heat, . When the cutter unit 13 is positioned below the cut portion, the cutter unit 11 can be rotated to grip the cut portion. Then, ultrasonic waves are transmitted to the cutter unit 13 through the transmitting member 12, so that the cut part can be cut as the heat changes. The cleavage can be transformed into heat as the ultrasound is transmitted to the cleavage site, thereby cutting the cleavage site. When the cutting site is cut, it is advantageous that the ultrasonic wave converted into heat is quickly discharged to the outside. For this purpose, at least part of the jaw unit 11 may be made of a thermally conductive material, for example, made of thermally conductive silicone, silicone rubber, Teflon or a mixture thereof. For example, the outer surface of the clip 112 or the portion contacting the cutter unit 13 may be made of such a thermally conductive synthetic resin material or a sheet of heat dissipation synthetic resin material, or may be coated with such a material. As a result, after cutting, heat at the cutting site or adjacent areas can be quickly discharged to the outside. In addition, the human body is prevented from being damaged by the rapid discharge of heat, and at the same time, the joining unit 11 and the cutter unit 13 can be quickly applied to the cutting of other parts.

Various thermally conductive materials may form at least a portion of the jaw unit 13 and the invention is not limited to the embodiments shown.

2 shows an embodiment of an ultrasonic cutter applied to an ultrasonic applicator according to the present invention.

Referring to FIG. 2, the transmitting member 12 may have a circular cross section and may extend linearly, and may be connected to an ultrasonic vibration unit disposed on a working body to which one end of the transmitting member 12 is connected. And the cutter unit 13 may be formed at the other end of the transmitting member 12. [ The cutter unit 13 includes a cylinder-shaped fixing part 131 extending from the transmitting member 12 and having a relatively large diameter as compared with the transmitting member 12; A cylindrical cutting portion 132 connected to the fixing portion 131 and extending to have a small diameter with respect to the fixing portion 131; For example, a restriction portion 133 formed on one side of the cut portion 132 to limit the transmission of ultrasonic waves while being connected to the cut portion 132. [

The transducer or ultrasonic transducer unit for generating ultrasonic waves may be disposed in the operation body described below, or may be disposed inside the fixation part 131. [ When the transducer is installed in the operating body, the transmitting member 12 can be made of a material and structure suitable for ultrasonic transmission. When the transducer is disposed in the fixing part 131, the fixing part 131 may be a hollow tube and a cable for signal transmission or power transmission may be disposed therein.

The fixing portion 131 may have a cylinder shape extending with a uniform diameter and may be fixed to the end portion of the transmitting member 12 so that the transmitting member 12 and the cutter unit 13 are stably fixed . The cut portion 132 may be formed to be integrally formed with the transmitting member 12 and may be bent or curved and may be gradually changed from a circular shape to an elliptical shape along the extending direction. In addition, the cut portion 132 may have a curved inner surface or a portion contacting the cut surface with an elliptical cross-section, and the outer bent portion may have a curved surface having a planar shape. As a result, the cross section of the cut portion 132 may be an asymmetric elliptical shape. The restriction portion 133 may be formed to extend from the portion where the cut portion 132 starts, by a predetermined length, and may be formed, for example, at a bent outer portion. A human body cutting portion can be positioned on one side of the cutting portion 132 and an ultrasonic wave transmitted along the cutting portion 132 can be made into a structure suitable to be converted into heat at the human body cutting portion. And the human body cutting portion can be cut at the cutting portion 132 by the operation of the jaw unit.

FIG. 3 shows an embodiment of an operation case 111 forming a jaw unit applied to an ultrasonic applicator according to the present invention.

Referring to FIG. 3, the operation case 111 includes a coupling portion 31 having a rotation coupling protrusion 311 coupled to one end of the operation tube 14; A fastening portion 32 extending from the fastening portion 31 and an engaging body 33 extending in a banana shape cut in half along the longitudinal direction from the fastening portion 32. [ Due to such a structure, the outer portion of the operation case 111 may have a convex curved shape, and the inner portion of the operation case 111 or the portion contacting the clip may have a planar shape. And an operating groove 331 may be formed in the inner portion. The operating groove 331 may have a shape extending along the extending direction of the engaging body 33 and may have a deformed portion such that a stepped shape is formed at an intermediate portion along the extending direction. And the clip is stably coupled to the operation case 111 by the formation of the deformation portion. The operating groove 331 may be connected to the balance portion 333 where the fixing hole is formed. Further, a discharge hole 332 is formed at the end of the operating groove 331 so that the clip is lifted due to the inflow of air in the state where the clip is engaged, or moisture generated in the operating groove 331 is discharged to the outside do.

FIG. 4 illustrates an embodiment of a clip for forming a jaw unit applied to an ultrasonic applicator according to the present invention.

4, the clip 112 includes a clip body 41 extending along the extension direction of the operation case described above; A fastening protrusion (42) formed on a rear surface of the clip body (41); And the buffer groove 43 may be formed on the opposite side of the surface on which the fastening protrusions 42 are formed or in the portion where the human body cutting portion is cut, ), And may be formed to be deflected from the center line while extending to both sides with respect to the center line along the longitudinal direction.

The portion where the clip body 41 is engaged with the operation case may be a planar shape, and the fastening protrusion 42 may be formed into a shape that protrudes from a plane while being entirely rectangular. The fastening protrusion 42 is engaged with the operating groove (see 331 in FIG. 3) described above, so that the clip 112 is stably coupled to the operation case 111. Therefore, the fastening protrusion 42 can be made into a structure that can be inserted into the operating groove, and can be made of, for example, a material having elasticity. Alternatively, the entire clip 112 may be made of elastic silicon, silicone rubber, or a mixture thereof, and the silicone or silicone rubber may have elasticity and at the same time have high thermal conductivity.

The fastening protrusions 42 for improving the engagement stability of the fastening protrusions 42 can be formed in a T shape and the fastening protrusions 42a in the form of a vertical plate are combined with the fastening protrusions 42 in a rectangular plate shape . &Lt; / RTI > In the embodiment shown in Fig. 3, the deformed portions are formed in the operating grooves, and the fastening protrusions 42 shown in Fig. 4 are shown as smoothly extending curved shapes. However, each of the fastening protrusions 42, Can be made of various structures that can be combined with each other.

The stabilizing portion 411 having a relatively large area can be formed in the front portion of the clip body 41 and the fastening protrusion 42 having a larger volume as compared with the other portions, The protrusions 421 may be formed. A cylindrical insertion tab 422 may be formed in the fastening stabilizer protrusion 421. The fastening stabilizer protrusion 421 can be coupled to the balance portion described above, and the insertion tab 422 can be inserted and fixed into the fixing hole formed in the balance portion.

As shown in FIG. 4, the inner surface of the clip body 41 may be symmetrically inclined in both directions with respect to the center line in the longitudinal direction, thereby making it generally triangular in cross section. And a plurality of buffer grooves 43 may be formed on the sloped shape so as to be bent toward both sides with respect to the center line. By forming the plurality of buffer grooves 43 separately from each other and continuously formed, contact protrusions extending along the buffer grooves 43 can be formed between the adjacent buffer grooves 43. The thickness of the buffer groove 43 may be larger than the thickness of the contact protrusions but is not necessarily required. However, since the buffer groove 43 is formed to have a small thickness, the body cutting site can be stably fixed, and at the same time, the deformation of the body cutting site can be sufficiently absorbed during the cutting process.

As described above, at least a portion of the clip 112 may be made of thermally conductive synthetic resin, and the thermally conductive synthetic resin may be silicon, silicone rubber, Teflon, or a mixture thereof. For example, the clip 112 may be formed of such a material as a whole, or a portion where the contact protrusions and the buffer grooves 43 contacting the human body are formed may be coated with such a material. The thermally conductive material may be, for example, an insulating material and have a thermal conductivity of 0.8 to 20 W / m · K, and may have a Shore hardness of 20 to 100, but is not limited thereto. And may have a specific gravity of 1.2 to 4.0 and may include a material such as aluminum nitride, aluminum oxide, beryllium oxide, silicon carbide or ceramic powder (SiC, Si ₃ N ₄ ) to improve thermal conductivity, It can be added in powder or powder form. The heat at the cutting site can be quickly dispersed to the outside during the use of the clip 112 due to the high thermal conductivity, and the ultrasonic waves can be prevented from being scattered to the outside at the portion cut by the relatively low hardness or small specific gravity. The clip 112 can also be made of a variety of thermally conductive materials, and the invention is not limited to the embodiments shown.

FIG. 5 illustrates an embodiment of an ultrasonic applicator 50 according to the present invention.

5, the operation body includes an ultrasonic wave generating unit 51 including an ultrasonic transducer; A receiving housing (52); A handle 53 formed in the receiving housing 52 and a trigger 54 for generating or stopping ultrasonic waves. The housing member 15 can be coupled to the receiving housing 52 by a fastening knob 55. The operation of the handle 53 enables the jaw unit 11 to be operated and rotated by the cutter unit 13 located at the cut portion to fix the cut portion. Ultrasonic waves can be generated from the ultrasonic wave generating unit 51 and transmitted to the cutter unit 13 by the additional operation of the handle 53 or the operation of another operation unit. Then, the ultrasonic waves are converted into heat and the cut portion can be cut.

The ultrasonic applicator 50 can be made in various structures and the present invention is not limited to the embodiments shown.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention . The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

11: coarse unit 12: transmitting member
13: Cutter unit 14: Operation tube
15: housing member 31: bonding site
32: fixing part 33: engaging body
41: clip body 42: fastening projection
42a: fastening leg 43: buffering groove
50: Ultrasound apple lyre 51: Ultrasonic generating unit
52: receiving housing 53: handle
54: trigger 55: fastening knob
111: operating case 112: clip
131: fixing part 132: cutting part
133: Restriction portion 311:
331: Operation groove 332: Discharge hole
333: balance part 411: stable part
421: fastening stabilizer 422: insertion tab

Claims

A working tube 14 extending in a hollow tube shape;
A coarse unit (11) movably coupled at one end to the end of the working tube (14); And
And a cutter unit (13) formed at an end of the transmitting member (12) extending along the inside of the operating tube (14) and capable of contacting the coarse unit (11)
Wherein a part of the cutter unit (13) extends in a curved shape with respect to an extending direction of the transmitting member (12).

And a clip 112 fixed to the operation case 111. At least a part of the clip 112 is connected to the operation case 111 via a thermocouple 111. [ Wherein the medical ultrasonic applicator has a thermally conductive structure.

The medical ultrasonic applicator according to claim 2, wherein the thermally conductive synthetic resin is silicone, silicone rubber or a mixture thereof.

And a clip 112 which is fixed to the operation case 111. The clip 112 is connected to the operation tube 111 along the longitudinal direction, And a plurality of buffer grooves (43) extending in both directions with respect to the center line and being folded.

The medical ultrasound applicator of claim 4, wherein at least a portion of the clip (112) is made of silicon, silicone rubber, Teflon, or a composite material of these.