JP2003220075A - Heat-treating implement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a safe heat-treating implement as compared with that using a high frequency wave and having a low running cost. <P>SOLUTION: A heating member (heating unit 6) is detachably attached to the surgical treating implement for treating a tissue. The surgical treating implement has a knife edge 2 for conducting a treatment, and a knife edge holder 1 for holding the knife edge 2. The knife edge 2 is attachable to the holder 1, and the unit 6 is detachably attached to near the knife edge 2. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermal treatment device.

[0002]

2. Description of the Related Art Conventionally, various thermal treatment tools have been used. For example, Japanese Patent Publication No. 7-509620 discloses an electrothermal surgical blade in which a heating element and a knife blade are integrally formed.

Further, US Pat. No. 5,807,392 discloses a surgical instrument which is connected to a high frequency generator and heats an electric resistance heating component at its tip to heat and ablate tissue. The shaft including the tip portion is detachable from the handle.

Further, US Pat. No. 5,306,287 discloses tweezers which incorporates a heating element and transfers heat to the tip portion to act.

US Pat. No. 4,960,419 discloses a high-frequency knife in which a knife blade can be attached to and detached from a handle.

[0006]

However, the sharpness of the knife blade in the electrothermal surgical blade described in JP-A-7-509620 described above is blunt when used in one case and sterilized again. The sharpness cannot be maintained even when used. Because of this, the heating element is reusable,
There is a problem in that the cost is high because the entire electrothermal surgical blade cannot be reused.

The above-mentioned US Pat. No. 5,807,39
The method disclosed in Japanese Patent No. 2 has a problem that it is difficult to ensure electrical insulation because the resistance component is heated at a high frequency.

The above-mentioned US Pat. No. 5,306,28
The tweezers disclosed in Japanese Patent Publication No. 7 have a problem that heat loss occurs due to heat transfer, resulting in poor efficiency.

Further, in the high frequency knife disclosed in US Pat. No. 4,960,419, since the high frequency is used, the tip of the blade becomes hot and becomes blunt, and the sharpness like a normal knife blade cannot be maintained. There is a problem.

The present invention has been made in view of such a problem, and an object thereof is to provide a thermal treatment instrument provided with a heat generating member with a high frequency by making the heat generating member reusable. Another object of the present invention is to provide a thermal treatment tool that is safer and has a lower running cost than that of the conventional thermal treatment tool.

Another object of the present invention is to provide a thermal treatment instrument having a heat-generating member, which can be detached only at the distal end portion to achieve miniaturization. .

Another object of the present invention is to make it possible to attach and detach a component having a heat generating portion at the tip to a treatment instrument such as a commercially available tweezers or a water suction tube, and to fix the heat of the tip portion. It is an object of the present invention to provide a thermal treatment instrument that achieves a sufficient effect and at the same time has various heat generating parts that can be exchanged to have versatility according to the purpose of use.

[0013]

In order to achieve the above object, in the thermal treatment instrument according to the first invention, a heat generating member is detachably provided to a surgical treatment instrument for treating a tissue.

A thermal treatment instrument according to a second aspect of the present invention is a thermal treatment instrument including a heat generating portion for treating a tissue and an operating portion grasped by an operator, wherein the heat generating portion is It is detachable from the operation section.

A third aspect of the present invention is the thermal treatment instrument according to the first aspect, wherein the surgical treatment instrument comprises a knife blade for performing treatment and a holder for holding the knife blade. The knife blade is attachable to and detachable from the holder, and the heat generating member is detachably arranged near the knife blade.

[0016]

DETAILED DESCRIPTION OF THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings.

(First Embodiment) (Structure) FIGS. 1A, 1B, and 1C are general structure diagrams of a first embodiment of the present invention. 1 (A) shows the structure of the heater unit 5, FIG. 1 (B) shows the state in which the knife blade 2 and the heater unit 5 are removed, and FIG. 1 (C) shows the knife blade 2.
And the heater unit 5 is attached.

FIG. 2 is an enlarged sectional view taken along line AA in FIG. In FIG. 1B, the knife blade holder 1 has a convex portion 3 having a dovetail groove at the tip thereof.
It is detachable by engaging the groove portion 4 of.

The heater unit 5 shown in FIG. 1 (A) is provided with a heater portion 6 on the outer surface of a base member 7 having a U-shaped cross section at the tip, and is made of a deformable material such as resin connected to the base member 7. It consists of a mounting part 8. The mounting portion 8 is provided with two claw-shaped engaging portions 9. The heater part 6 has a built-in heater pattern 6'made of a metal resistance heating element or the like, and is electrically connected to a power source (not shown) via a lead wire 11 and a connector 12.

The mounting portion 8 is equipped with a switch 10 for turning on / off the supply of electric power to the heater portion 6.
You can do it. The engagement portion 9 is attachable to and detachable from the female blade holder 1 as illustrated.

When the base member 7 is made of an insulating member such as ceramic, or is made of a metal member, the heater portion 6 is covered with an insulating material so that the heater pattern 6'is electrically insulated from the base member 7. .

The knife blade 2 is mounted on the knife blade holder 1, and the heater unit 5 is further mounted so as to cover the knife blade holder 1 for use. The knife blade 2 is formed so that the blade portion 2 ″ projects from the tip of the heater portion 6.

(Operation) When the tissue is incised by the knife blade 2 and bleeding occurs, the switch 10 is operated to heat the heater portion 6 to a desired temperature and press the heater portion 6 to stop the bleeding. . Alternatively, by cutting the tissue with the knife blade 2 in a state where the heater portion 6 is heated while the switch 10 is operated, it is possible to make an incision while coagulating the tissue when the heater portion 6 that has generated heat comes into contact with the cut surface. is there. The boundary between the heater portion 6 and the knife blade 2 is tapered as shown in the drawing so that it can be cut into the tissue. Further, the outer surface of the heater portion 6 is provided with an adhesion preventing means such as Teflon (registered trademark) coating in order to prevent the adhesion of tissue.

(Effects) From the above, when the sharpness of the knife blade 2 is deteriorated, the heater portion 6 can be used as it is and only the knife blade 2 can be replaced, which is very effective in reducing the running cost. .

(Second Embodiment) (Structure) FIG. 3 is an overall structural view of a thermal tweezers 13 of a second embodiment of the present invention, and FIG. 4 is an enlarged front view of the thermal tweezers 13 shown in FIG. FIG. 5 is a sectional view showing the internal structure of the tip of the thermal tweezers 13.

The thermal tweezers 13 shown in FIG. 3 comprises a pair of arm portions 14, a root portion 15 and a tip heat generating portion 19.
As shown in FIG. 4, the heater portion 20 of the tip heating portion 19 is attachable to and detachable from the arm portion 14. Heater part 2
The heater pattern 21 is built in 0, is connected to the lead wire 24 via the electrode portion 23 and the engaging portion 22, and is further connected to the root portion 15 via the connector 16 and the lead wire 18 as shown in FIG. Is connected to a power source (not shown).

The engaging portions 22 are a pair of deformable electric contact pieces that can be inserted into and removed from the heater portion 20. The outer surface of the heater portion 20 is coated with Teflon to prevent adhesion of tissue.

(Operation) The tissue sandwiched by the exothermic portion 19 is coagulated by the output of the power source (not shown). When the Teflon coating applied to the outer surface of the tip heating portion 19 deteriorates and the tissue adheres,
The tip heating portion 19 is replaced with a new one.

(Effect) Since the tip heating portion 19 can be replaced, good coagulation and hemostatic ability can be maintained at all times.

(Third Embodiment) (Structure) FIG. 6 shows a tip heating portion 27 according to a third embodiment of the present invention.
7 is an overall configuration diagram of the attached tweezers 25, and FIG.
FIG. 8 is an enlarged view of the tip of the tweezers 25 with the tip 7, and FIG. 8 is a cross-sectional enlarged view of the tip of the tweezers 25 with the tip heating portion 27.

The second embodiment of the present invention requires a dedicated tweezers, whereas the third embodiment is characterized in that the tip heating portion 27 can be attached to and detached from the tweezers 25 normally used.

The groove of the heater portion 32 is fitted to the tip of the arm portion 31 of the tweezers 25. The heater portion 32 has the heater pattern 33 built therein and is connected to the cover 26 at the same time. Lead wire 3
4 is built in and electrically connected to the heater pattern 33.

The cover 26 is made of a resin-made deformable insulating material, and the engaging portion 28 is fixed together with the base portion of the tweezers 25.

Further, it is electrically connected to a power supply device (not shown) via the lead wire 29 and the connector 30.

FIG. 7 shows a structure in which the gripping surfaces formed by the flat surfaces of the pair of heater portions 32 are combined to coagulate the tissue and stop bleeding, whereas in the modification of FIG. 8, the heater pattern 3 is used.
The holding surface of the heater part 32 having the built-in 3 is composed of a heat transfer blade 35 having a triangular cross section, and a rubber 37 having a rectangular cross section on the opposite holding surface of the tip part 36. The heater portion 32 and the blade 35 are coated with Teflon.

(Operation) In the configuration shown in FIG. 7, the tissue sandwiched by the tip heating portion 27 is coagulated and bleeding by heat from the output from the power source (not shown). Alternatively, it can be used for applications such as permanent hair removal where the hair root is cauterized thermally.

In the configuration shown in FIG. 8, the tissue sandwiched between the heat transfer blade 35 and the rubber 37 is coagulated and incised by heat by the output from the power source (not shown).

(Effect) Since the tip heating portion 27 can be attached to and detached from the normal tweezers 25, the cost can be further reduced.

(Fourth Embodiment) (Structure) FIGS. 9A and 9B are front end structural views of a heater tube 39 according to a fourth embodiment of the present invention.
FIG. 9A shows a state in which the heater tube is removed, and FIG.
(B) is a diagram showing a state in which a heater tube is attached.

In the configuration of the fourth embodiment, the outside of the water suction pipe 38 that is generally used in surgery or brain surgery,
A heater tube 39 having a heater portion 40 at its tip is configured to be insertable and removable. The heater portion 40 at the tip is electrically connected to a power source (not shown) by a lead wire 41 incorporated in the heater tube 39.

The heater tube 39 is a deformable tube made of an electrically insulating resin. The heater section 40 is composed of a heater composed of a ring-shaped PTC element, and the outer surface thereof is coated with Teflon.

(Operation) With the heater tube 39 attached to the water suction pipe 38, the heater portion 40 is attached to the tissue.
Coagulate hemostasis of the tissue by contacting. If the Teflon coating deteriorates, the heater tube 39
Can be replaced with a new one.

After confirming the bleeding point by sending water, the bleeding point can be surely stopped by the heater portion 40 at the tip.

Further, by using a bendable material for both the water suction pipe 38 and the heater tube 39, it is possible to approach a portion which cannot be approached by a straight suction pipe.

(Effect) The hemostatic coagulation of the tissue becomes possible by simply mounting it on a commercially available water suction tube. The electrical safety is higher than that of a water suction pipe that energizes high frequencies. In particular, it can be applied to areas where high frequencies cannot be used in brain surgery and otolaryngology surgery.

Inventions having the following configurations can be extracted from the above-described embodiments.

1. A heat-generating member can be attached to and detached from a surgical treatment tool that performs tissue treatment, and the surgical treatment tool has
A knife blade for performing treatment and a holder for holding the knife blade, the knife blade is attachable to and detachable from the holder, and the heat generating member is adjacent to or surrounds the knife blade. In addition, the thermal treatment instrument is detachably arranged with respect to the holder.

2. A heat-generating member can be attached to and detached from a surgical treatment tool that performs tissue treatment, and the surgical treatment tool has
A thermal treatment instrument comprising tweezers or a water suction pipe, wherein the heat generating member is detachably attached to the tweezers or the water suction pipe.

The related art of the present invention will be described below.

(Description of Related Technology) (Related Technology 1) 1. A treatment tool to be worn on a user's finger, comprising a first treatment section and a second treatment section, wherein the first treatment section has a heating means, a heating plate in contact with tissue, and a user. The thermal treatment instrument is provided with an attachment means that can be fixed to the index finger of the second treatment section, and the second treatment portion is provided with a gripping member made of a flexible material and an attachment means that can be fixed to the thumb.

2. Conventional technology HALS (Hand Assisted Laparo)
In recent years, attention has been paid to a small-sized treatment tool that can be inserted into the palm for that purpose.

An explanatory view of HALS is shown in FIG. Abdominal wall 1
An airtight member 103 is attached to the incision hole 01 of 01, and the abdominal cavity is inflated with carbon dioxide gas. Then, the operator puts a hand 104 into the abdominal cavity through the airtight member 103, and the operator treats the tissue 105.
At that time, the treatment tool 106 is held on the palm. Treatment is performed while observing with an endoscope inserted through another incision.

Further, Japanese Patent Application No. 2000-327148 and Japanese Patent Application No. 2000-164905 disclose a treatment instrument for coagulating and incising a tissue by a heating means.

3. DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention Since the HALS treatment tool is a scissor that grasps tissue or cuts mechanically by shearing, there is a risk of bleeding even when it is desired to incise tissue including blood vessels. It was necessary to prepare a high-frequency treatment instrument separately from the instrument.
Further, the high-frequency treatment device has a problem that it cannot be used for a tissue (for example, a nerve) to which a current does not want to flow because an electric current flows through the tissue.

In consideration of the above problems, HAL capable of performing coagulation and incision treatment on a tissue including blood vessels without energizing the tissue.
An object is to provide a treatment tool for S.

4. Embodiment of the Invention (Structure) FIG. 11 is an external view of a treatment tool according to an embodiment of the present invention, and FIGS. 12A and 12B are detailed explanatory views of the treatment tool.

In FIG. 11, the incision hole 10 in the abdominal wall 101.
The hand 104 is inserted into the abdominal cavity from the airtight member 103 attached to the second member. The first treatment section 105 has the index finger 106.
The treatment section 107 is attached to the thumb 108. 11
Reference numeral 2 is a lead wire, 113 is a glove, and 114 is a lead wire fixing means.

In FIG. 12A, the first treatment section 10
5 is a finger ring 109 and a heat generating plate 110 provided thereon.
Have. An electric resistor (heating pattern) 111 is provided on the surface of the heating plate 110. There is a lead wire 112 for energizing the electric resistor 111.
Extends on the glove 113 above the hand 104 toward the hand side, and is fixed on the glove by a lead wire fixing means 114 such as a tape in the middle.

The end of the lead wire 112 is connected to a current supply source (not shown). Here, the heat generating plate 110 is made of a metal having good thermal conductivity such as copper, molybdenum, silver, brass, and aluminum. The heat generating plate 110 is provided with a slightly sharp convex portion 115 over the entire length in the longitudinal direction.

The electric resistor 111 is film-formed on the heat generating plate by a thin film molding technique such as sputtering or a thick film molding technique such as a printing method, and an insulating layer (not shown) is provided on the front and back sides thereof. Materials for the electric resistor 111 include molybdenum and tungsten, and examples of the insulating layer include silicon nitride and alumina.

The finger ring is preferably made of a material having low thermal conductivity, such as polyimide, polysulfone, resin such as silicon rubber or other rubber, and ceramic such as porous alumina. A heat insulating layer of cloth made of alumina fiber or the like may be provided on the inner peripheral surface of the finger ring (where the finger comes into contact).

In FIG. 12B, the second treatment section 10
7, a rubber member 116 that engages with the protrusion 115 is provided on the finger ring 109. Examples of the material of the rubber member 116 include silicon rubber, fluororubber, ethylene propylene rubber and the like.

(Operation) First treatment section 105 attached to the finger
The tissue is grasped between the convex portion of the sheet and the rubber member of the second treatment portion 107. Next, when electricity is applied to the electric resistor 111 via the lead wire 112 from the power source, the electric resistance 1 is caused by the electric resistance.
11 heats up. The heat generation temperature is about 160 to 240 ° C.

Due to this heat, the tissue is solidified and the incisions are continuously cut. Details of the above operation are disclosed in Japanese Patent Application No. 2000-327148.

(Effect) Under HALS, the tissue containing blood vessels can be coagulated and dissected without energizing the tissue. Further, since the treatment portion is attached to the finger, the sensation of pinching the tissue is transmitted, and delicate treatment is possible.

By adjusting the heat generation temperature, only incision or coagulation can be selected.

FIG. 13 is a diagram for explaining a modification of the above embodiment. In this modified example, the heating plate 11 is arranged so that a wide range can be solidified with respect to the first treatment portion 105.
0 is provided with a flat surface 117.

(Related Technique 2) 1. Constitution of the invention: A treatment section having a heat generating means for generating heat for treating an affected area, heat setting means for setting heat generation information for each of a plurality of different heat generating parts provided in the heat generating means, and the heat generating means. And a temperature control means for independently controlling a plurality of different parts of the heat generation means based on the plurality of heat generation information, wherein the temperature control means has a predetermined output. A thermal treatment instrument characterized in that temperature control is performed for each of a plurality of heat-generating portions that differ in a sequence.

2. 2. Description of the Related Art Generally, a thermal treatment tool is used when performing a procedure such as incision, coagulation, or hemostasis of an affected area by surgical operation or endoscopic treatment. The thermal treatment instrument has a treatment section containing a heat generating means for heating the affected area, and gives heat generated by the heat generating means of the treatment section to the affected area to perform incision, coagulation, hemostasis and the like treatment. ing.

Such a thermal treatment instrument is disclosed, for example, in Japanese Examined Patent Publication No.
As described in Japanese Patent Laid-Open No. 3-9031, there has been proposed one including a treatment section having a plurality of divided heater segments as a heat generating means. The treatment section is configured to apply heat generated by the plurality of heater segments set with the same temperature setting to the affected area to treat the affected area.

3. DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, the thermal treatment instrument described in Japanese Patent Publication No. Sho 53-9081 causes the plurality of heater segments to generate heat at the same temperature setting. There is a possibility that a difference will occur in the temperature distribution of the parts.

The present invention has been made in view of these circumstances, and a thermal treatment instrument capable of forming a suitable temperature distribution and performing stable treatment on treatment portions having various shapes. To provide.

4. BEST MODE FOR CARRYING OUT THE INVENTION Embodiment (Structure) As shown in FIG. 14, a thermal treatment instrument 201 according to the present embodiment is a coagulation / incision forceps 2 that incorporates a heating element described later.
02 and the coagulation incision forceps 202 are detachably connected,
The device main body 203 is configured to output electric power to the heating element of the coagulation / cutting forceps 202 to control driving. A foot switch 206 can be connected to the apparatus main body 203. The foot switch 206 has two switches, a maximum temperature level output switch 206a and a set temperature level output switch 206b, as input means.

The coagulating / dissecting forceps 202 includes a main body connector 20 provided at the rear end of the extending connecting cable 204.
5 is detachably connected to the apparatus main body 203. The coagulation / dissection forceps 202 includes a heat treatment section 207 including a plurality of heat generating elements and the heat treatment section 2.
A treatment section 209 is provided which has an elastic receiving section 208 which can be brought into contact with and separated from 07, and which grasps and treats a biological tissue.

The heat treatment portion 207 and the elastic receiving portion 208 of the treatment portion 209 grip the living tissue, and the device body 2
When the heat-generating element portion 207, which has generated heat due to energization from 03, generates heat, the grasped living tissue is coagulated and incised. Further, the number of the heating elements varies depending on the type of forceps according to the purpose of treatment, and the body connection connector 205
Has a forceps identifier 210 indicating the type of forceps. The forceps identifier 210 is, for example, an electric resistance element.

As shown in FIGS. 15 (A) and 15 (B), the apparatus main body 203 includes a front panel 203a (FIG. 15 (A)).
And a rear panel 203b (FIG. 15B).

As shown in FIG. 15A, the front panel 20
Reference numeral 3a denotes a body connecting connector 2 of the coagulation incision forceps 202.
05 is provided with a connector receiving portion 211 to which the connector 05 can be detachably connected. The front panel 203a has a power source on / off.
Power switch 212, a temperature level UP switch 213a and a temperature level D for setting the heat generation temperature levels 1 to 5 in the heat treatment section 207 of the coagulation incision forceps 202.
It has an OWN switch 213b and a standby switch 214 for shifting from the standby state to the output enabled state.

Further, the front panel 203a has a standby display LED 214b that lights up when output is disabled to display the standby state, and a display LED 215 that displays the temperature level set by the temperature level UP switch 213a and the temperature level DOWN switch 213b. An output display LED 216 indicating that the heating element of the coagulation / cutting forceps 202 is being energized, and a forceps abnormality LED 217a that lights up when the coagulation / cutting forceps 202 is abnormal.
Power supply abnormality display LE that lights up when there is an abnormality in the internal circuit
It has a D217b and a buzzer 217c that generates a warning sound.

On the other hand, as shown in FIG. 15B, the rear panel 203b has a foot switch connector receiving portion 218.
And a power inlet 219. The apparatus main body 203 of the present embodiment can be connected to the coagulation / cutting forceps 202 having a maximum of four heating elements.

As shown in FIG. 16, the coagulation / incision forceps 2 is used.
02 includes the treatment section 209 having the heat treatment section 207 and the elastic receiving section 208 as described above.
And a handle portion 220 that is opened and closed to grip the living tissue. The connection cable 20
4 extends from the rear end side of the handle portion 220.

As shown in FIGS. 17A and 17B, the heat treatment section 207 of the coagulation / dissection forceps 202 has a plurality of heat generating elements 221, for example, the same three heat generating elements 221a, 221.
b and 221c are thermally coupled and arranged on the heat transfer plate 222.

In the present embodiment, the output is controlled for each element in a predetermined output sequence according to the shape of the forceps and the arrangement of the heating element 221 (eg, the output time and the output start time are changed for each element). Further, the temperature unevenness of the heat treatment section 207 is reduced by outputting a pulse from only one element.

FIG. 18 is a block diagram mainly showing the structure of the apparatus main body 203.

When the main body connecting connector 205 of the coagulation incising forceps 202 is connected to the main body 203 of the apparatus, the forceps identifying section 231 receives information indicating the type of forceps output from the forceps identifier 210 in the main body connecting connector 205. It has become.

When the forceps identifier 210 is an electric resistance, the forceps identification section 231 measures the resistance value and identifies the type of forceps. The type of forceps is the difference in the structure in which the number and arrangement of the built-in heat generating elements 221 and the shape of the heat transfer plate 222 are combined.

The control unit 233 stores the memory 234 in accordance with the forceps type information output from the forceps identification unit 231.
The type of forceps connected is determined based on the data stored in advance. Then, the control unit 233 controls the output of the output control unit 232 (232a to 232c) based on the setting data stored in advance in the storage memory 234 according to the determined type of forceps. The setting data stored in advance in the memory 234 is set based on the number and arrangement of the heating elements 221, the shape of the heat transfer plate 222, and the like.

19A to 19C show an output sequence for each element among the setting data stored in the memory 234 in advance. FIG. 19
The output sequence a shown in (A) is control performed by the output control unit 232a for the heating element 221a. FIG. 19
The output sequence b shown in (B) is control performed by the output control unit 232b on the heating element 221b. FIG. 19
The output sequence c shown in (C) is control performed by the output control unit 232c on the heating element 221c.

The heat treatment section 207 has three built-in heat generating elements. However, since the three heat generating elements are arranged side by side, heat is collected in the middle, and there is the heat generating element 221b, that is, substantially the center of the heat transfer plate 222. Is not higher than the set temperature, as shown in the output sequence b of FIG. 19 (B),
The heat generation temperature of the heat transfer plate 222 is kept uniform by performing an output sequence in which the heat generation element 221b is turned ON / OFF in a pulsed manner.

As described above, the output sequence for each heating element 221 is changed according to the shape of the connected coagulation / cutting forceps and the arrangement of the heating element 221, so that the temperature unevenness of the heat transfer plate 222 and further the heat treatment section 207 can be obtained. Can be reduced to obtain a stable coagulation / dissection ability.

(Related Technology 3) 1. A thermal treatment instrument characterized in that a heat generating element is detachably provided at the tip of one or both of a pair of arms for opening and closing a tweezers type surgical treatment instrument.

2. 2. Description of the Related Art As disclosed in Japanese Unexamined Patent Publication No. 8-294494, conventionally, in order to coagulate and cauterize small elementary tissues such as blood vessels, a tissue is picked by a pair of thin arms and provided at the tip of each arm. There has been a tweezers-type bipolar treatment tool that applies a high-frequency current between electrodes. The high-frequency current emitted from one electrode flows to the other electrode and returns to the power source at hand, so that the high-frequency current flows to the patient and is less likely to cause a risk, as compared with a monopolar treatment instrument.

3. Problems to be Solved by the Invention However, a part of the high-frequency current may flow to the patient in response to changes in the energized state of the tissue, which may damage the tissue other than the target site. When the electrodes are closed and the electrodes come into contact with each other, the high-frequency current does not flow to the target tissue and returns directly to the power source.
There was also the problem of not being able to cauterize.

Further, the conventional tweezers type bipolar treatment tool has a problem that it is uneconomical to replace the entire treatment tool when the electrode at the arm tip is deteriorated.

The present invention solves these problems and enables solidification and cauterization safely without applying high frequency current to the tissue,
Another object of the present invention is to provide a surgical treatment tool that is safe and has good operability even when the energization state of tissue changes. Another object of the present invention is to provide an economical treatment tool that does not require replacement of the entire treatment tool even if the treatment section at the tip of the arm deteriorates.

4. BEST MODE FOR CARRYING OUT THE INVENTION Embodiment (Structure) As shown in FIG. 20, a heat generating portion 303 is provided at the tip of a pair of arms 302 of a treatment instrument 301.
As shown in FIG. 21, the heat generating portion 303 is provided with a heat generating element 304 and a heat generating plate 305 in close contact with the heat generating element 304, and a lead wire 30 for passing a current from the heat generating element 304 to the hand side.
6 extends and is electrically connected to the terminal 307 exposed on the outer surface of the model of the heat generating portion 303. Further, at the hand of the heat generating portion 303, there is a lock portion 308 for detachably fixing to the arm 302. On the other hand, at the tip of the arm 302, there is a mounting portion 309 that receives the heat generating portion 303, and the terminal 307
It has a receiving terminal 310 that comes into contact with and is electrically conductive, and a receiving portion 311 that receives and fixes the heat generating portion 303.

As shown in FIG. 22, each arm 302
The heat generating units 303 attached to the
5a and 305b are positioned so as to face each other. Note that, as shown in FIG. 23, the outer surface of the heat generating portion 303 may be coated with Teflon or the like 312.

(Operation / Effect) The tissue is safely cut by coagulation / cauterization by pinching the tissue with the heating plate heated by the heat generating element. During operation, even if the heating plates come into contact with each other, problems such as electrical short circuits do not occur. Further, since the heat generating portion 303 can be attached to and detached from the arm 302, if the heat generating portion is damaged, only the heat generating portion 303 needs to be replaced, which is economical.

[0098]

As described above, according to the present invention, it is possible to provide a thermal treatment instrument equipped with a heat generating member, which is safer than high-frequency treatment and has a lower running cost.

Further, according to the present invention, it is possible to provide a thermal treatment instrument having a heat-generating member, in which only the distal end portion can be attached and detached to achieve miniaturization.

Further, according to the present invention, it is possible to attach / detach and fix a component having a heat generating portion at the tip to a treatment instrument such as a commercially available tweezers or a water suction tube, so that the heat effect of the tip can be sufficiently exerted. At the same time, it is possible to provide a thermal treatment tool in which various heat generating parts are replaceable and which has versatility according to the purpose of use.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a first embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view taken along the line AA in FIG.

FIG. 3 is an overall configuration diagram of a thermal tweezers 13 according to a second embodiment of the present invention.

4 is an enlarged front view of the thermal tweezers 13 shown in FIG.

5 is a cross-sectional view showing the internal structure of the tip of the thermal tweezers 13. FIG.

FIG. 6 is an overall configuration diagram of a tweezers 25 with a tip heating portion 27 according to a third embodiment of the present invention.

7 is an enlarged view of the tip of the tweezers 25 with the tip heating portion 27. FIG.

8 is an enlarged cross-sectional view of a tip portion of a modification of the tweezers 25 with the tip heating portion 27. FIG.

FIG. 9 is a distal end configuration diagram of a heater tube 39 according to a fourth embodiment of the present invention.

FIG. 10 is an explanatory diagram of HALS.

FIG. 11 is an external view of a treatment tool according to Related Technique 1 of the present invention.

FIG. 12 is a detailed explanatory view of a treatment tool.

FIG. 13 is a diagram for explaining a modified example.

FIG. 14 is a fever treatment device 2 in Related Technique 2 of the present invention.
It is a figure which shows the structure of 01.

FIG. 15 is a diagram showing a configuration of a front panel 203a and a rear panel 203b of the apparatus main body 203.

FIG. 16 is a diagram for explaining a modified example.

17 is a diagram showing a configuration of a fever treatment section 207 of the coagulation incision forceps 202. FIG.

FIG. 18 is a block diagram mainly showing a configuration of a device body 203.

FIG. 19 is a diagram showing an output sequence for each element among setting data stored in advance in a memory 234.

FIG. 20 is a diagram showing a schematic configuration of a treatment tool 301.

FIG. 21 is a cross-sectional view showing the configuration around the heat generating section 303.

FIG. 22 is a diagram for explaining positioning of the heat generating section 303.

FIG. 23 is a view in which a coating 312 such as Teflon is applied to the outer surface of the heat generating section 303.

[Explanation of symbols]

1 female blade holder 2 female blade 2 "blade 3 convex 4 groove 5 heater unit 6 heater part 6'heater pattern 7 Base member 8 Mounting part 9 Engagement part 10 switches 11 lead wire 12 connectors

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hitoshi Karasawa             2-43 Hatagaya, Shibuya-ku, Tokyo Ori             Inside Npus Optical Industry Co., Ltd. (72) Inventor Keisuke Miura             2-43 Hatagaya, Shibuya-ku, Tokyo Ori             Inside Npus Optical Industry Co., Ltd. F-term (reference) 4C060 KK47

Claims (3)

[Claims] 1. A thermal treatment instrument, wherein a heat generating member is detachably attached to a surgical treatment instrument for treating a tissue. 2. A thermal treatment tool comprising a heat generating part for treating a tissue and an operating part grasped by an operator, wherein the heat generating part is attachable to and detachable from the operating part. A thermal treatment instrument characterized by: 3. The surgical treatment tool comprises a knife blade for performing a treatment and a holder for holding the knife blade, the knife blade being attachable to and detachable from the holder, and the heat generating member. The thermal treatment instrument according to claim 1, wherein the thermal treatment instrument is detachably disposed near the knife blade.