JP2000262535A - Operative device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely feed an electric energy to an operative utensil by a simple constitution, and at the same time, improve the operability in the operating section of the operative utensil. SOLUTION: This operative device is constitute of a trocar and an operative utensil 3 which is inserted in the trocar. An ultrasonic driving section 16 of the operative utensil 3 is electrically connected to a rod antenna-form terminal 18, which is parallel with the insertion axis of an insertion section 11, sand is stretchably extended to the insertion section tip end side, from an operating section 13 through a switch 17. The terminal 18 is a stretchable terminal which is urged with a spring in the stretching direction, and the outer periphery is insulated, and the tip end only is made conductive. On the base end side opening surface of the at-hand section of the trocar, a ring-form groove electrode which comes into contact with the terminal 18 and electrically conducts, and of which the center is the insertion axis of the insertion section, is attached.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surgical apparatus, and more particularly to a surgical apparatus characterized by a portion for supplying electric energy to a surgical tool for performing a percutaneous operation.

[0002]

2. Description of the Related Art In recent years, under endoscopic observation with a rigid endoscope or the like,
Surgical instruments for treating an affected part by inserting it into the abdominal cavity or joint cavity using a trocar or the like have been widely used.

[0003] For example, Japanese Patent Publication No. 2-43501 proposes a surgical instrument which is an intracorporeal resection device for inserting cartilage into a joint cavity and driving cartilage or the like by driving an electric drill with a motor.

[0004]

However, in the surgical instrument proposed in Japanese Patent Publication No. 2-43501, a battery for driving a motor is provided in an operation section of the surgical instrument.
Since this battery is relatively heavy, if an operator uses the surgical tool for a long time, a heavy load is imposed on the finger, and there is a risk that reliable surgery cannot be performed. In addition, when power is supplied from the outside to the surgical tool, a power supply cord must be connected to the operation unit, and such a cord hinders the operation of the operation unit, so that a reliable operation may not be performed. There is.

Further, since the weight of the battery is heavy as described above, there is also a problem that the arrangement of the battery is restricted in order to improve the balance of the surgical instrument.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is possible to reliably supply electric energy to a surgical instrument with a simple configuration and improve the operability of an operating section of the surgical instrument. It is intended to provide a device.

[0007]

A surgical apparatus according to the present invention includes a trocar inserted percutaneously into a body cavity, and an insertion portion inserted through the trocar, and the insertion portion is inserted into the body cavity. A surgical tool for projecting the distal end to apply energy to the tissue in the body cavity from the distal end of the insertion portion by electric energy to treat the tissue, and an energy supply unit for supplying the surgical tool with the electric energy. The surgical instrument is provided along an insertion axis of the insertion portion and includes a contact electrode that is extendable and contractible in the insertion axis direction, and the contact is provided when the trocar is inserted through the surgical instrument. A contact point which is in electrical contact with the electrode and is electrically connected to the contact electrode; and an electrical energy receiving terminal which is electrically connected to the contact point and receives electrical energy from the energy supply means. Composed of Te.

In the surgical apparatus according to the present invention, the trocar receives the electric energy from the electric energy receiving terminal and supplies the electric energy to the surgical instrument by electrically connecting the contact point and the contact electrode. ,
With a simple configuration, electric energy can be reliably supplied to the surgical tool, and the operability of the surgical tool at the operation unit can be improved.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 5 relate to a first embodiment of the present invention. FIG. 1 is a block diagram showing a configuration of a surgical apparatus.
FIG. 3 is a configuration diagram showing the configuration of the surgical tool of FIG. 1, FIG. 3 is a cross-sectional view showing the configuration of the hand portion of the trocar of FIG. 1, and FIG. 4 is an explanatory diagram illustrating an example of surgery using the surgical device of FIG. 5 is a configuration diagram showing a configuration of a modified example of the surgical instrument in FIG.

As shown in FIG. 1, a surgical apparatus 1 according to the present embodiment includes, for example, a trocar 2 percutaneously placed on an abdominal wall 8 and, for example, a jaw-type ultrasonic incision coagulation inserted into the trocar 2. And a surgical tool 3 such as a tool.

The trocar 2 comprises an insertion portion 4 which is inserted into the body cavity percutaneously, and a hand portion 5 which is continuously provided at a base end of the insertion portion 4, and a power cord 6 is attached to the hand portion 5. The power cord 6 is detachably connected, and the other end of the power cord 6 is connected to a secure (insulated, low voltage) medical device power supply (not shown) for the medical device. The insertion portion 4 and the hand portion 5 are hollow so that the surgical tool 3 can be inserted. The surgical tool 3 is inserted through the proximal end opening of the hand portion 5, and the surgical tool 3 is inserted through the distal end opening of the insertion portion 4. The tip can be made to protrude.

As shown in FIG. 2, the surgical instrument 3 includes an elongated insertion portion 11 inserted through the trocar 2 and an insertion portion 1.
It comprises a forceps section 12 provided at one end for incising and coagulating tissue by ultrasonic waves, and an operation section 13 connected to the proximal end of an insertion section 11 for operating the forceps section 12. The operation section 13 includes a fixed grip section 14 and a movable grip section 15, and allows the opening and closing operation of the forceps section 12 by moving the movable grip 15 with respect to the fixed grip 14.

An ultrasonic drive section 16 including an ultrasonic generator for supplying ultrasonic waves to the forceps section 12 is provided in the fixed grip section 14. The ultrasonic drive section 16 is provided with a movable grip section 15. Is electrically connected by a lead wire 19 to a rod antenna-like terminal 18 extending from the operation unit 13 to the distal end side of the insertion portion in parallel with the insertion axis of the insertion portion 11 via a switch 17 provided at the terminal. I have. Here, the rod antenna-shaped terminal 18 is a telescopic terminal urged by a spring in the extending direction, the outer periphery thereof is insulated, and only the tip is conductive. Although the number of the terminals 18 is one in FIG. 2 for easy understanding in description, actually, two terminals 18 are provided on the circumference of different diameters around the insertion axis of the insertion portion 11. I have.

As shown in FIG. 3, an insertion portion 5 that is in contact with a terminal 18 and is electrically connected when the surgical instrument 3 is inserted into the trocar 2 is provided on the proximal opening surface of the proximal portion 5 of the trocar 2.
The groove electrode 21 on the ring centering on the insertion axis is provided. A power supply electrode portion 22 to which one end of the power cord 6 is detachably connected is provided on the hand portion 5, and the power supply electrode 22 is electrically connected to the groove electrode 21 via a lead wire (not shown). . Although the number of the groove electrodes 21 is one in FIG. 3 for simplicity in explanation, actually, the groove electrodes 21 are centered on the insertion axes of the insertion portions 5 respectively corresponding to the two rod antenna-shaped terminals 18. Two different diameters are provided.

It is desirable to provide a means for suppressing the generation of noise such as a surge absorber between the groove electrodes 21 of the trocar 3 and on the side of the surgical instrument 3.

(Operation) Next, the operation of the thus configured surgical apparatus 1 of the present embodiment will be described.

For example, the surgical apparatus 1 is used under endoscopic observation with a rigid endoscope inserted percutaneously.
Of the trocar 2 percutaneously inserted into the body cavity from the proximal end opening of the proximal portion 5 of the trocar 2. When the surgical tool 2 is inserted into the trocar 2 by a predetermined amount, the distal end of the extensible terminal 18 of the surgical tool 3 comes into contact with the groove electrode 21 of the trocar 2, and the power from the medical device power supply via the power cord 6 is applied. A current can be supplied to the sound wave drive unit 16.

Subsequently, when the surgical tool 3 is pushed in, the surgical tool 3
The tip of the extendable terminal 18 is the groove electrode 2 of the trocar 2
In the state of contact with the trocar 1, the insertion portion 11 of the surgical tool 3 is inserted through the insertion portion 4 of the trocar 2, and finally the forceps portion 12 protrudes from the tip of the trocar 2, and the movable grip portion 15 and the switch 17 are operated. By doing so, surgery becomes possible.

For example, as shown in FIG. 4, in the case of an operation for performing local excision of an affected part 41 such as gastric cancer, an endoscope 42 inserted orally and a rigid endoscope (not shown) inserted percutaneously. Perform under both observations. In the endoscope 42 inserted orally, the high-frequency treatment tool 43 is protruded from the treatment tool channel to treat the mucous membrane of the stomach wall, and in the surgical apparatus 1 of the present embodiment, the surgical tool via the trocar 2 inserted percutaneously. 3 treats the outer surface of the stomach. The endoscope 42 is orally inserted into the body cavity, and while imaging the affected part 41 at the tip thereof and observing it on a monitor or the like, the high-frequency treatment instrument 43 inserted through the treatment instrument channel 42 of the endoscope. The affected part 41 is treated.

At the time of this operation, the surgical instrument 3 is
, The telescopic terminal 18 of the surgical instrument 3 slides in the ring-shaped groove electrode 21 provided on the trocar 1 to rotate the surgical instrument 3 to a required position. Therefore, the surgical instrument 3 can freely move back and forth and rotate with respect to the trocar 2.

(Effects) As described above, in the present embodiment, the ultrasonic wave of the surgical instrument 3 is surely provided by a simple structure in which the distal end of the extendable terminal 18 of the surgical instrument 3 is brought into contact with the groove electrode 21 of the trocar 2. Electric power can be supplied to the drive unit 16, and the surgical instrument 3 can move back and forth and rotate with respect to the trocar 2. The operating unit 13 of the surgical instrument 3 is provided with a battery, a power cord, and the like. There is no operation unit 1 of the surgical instrument 3
3 can improve the operability.

As shown in FIG. 5, a rechargeable battery 51 may be provided in the operation section 13 of the surgical instrument 3, and when the trocar 2 having the groove electrode 21 of the present embodiment is used, By using the surgical apparatus 1 while charging the rechargeable battery 51, even when performing an operation using a normal trocar without the groove electrode 21, the battery 51 allows the ultrasonic drive unit 16 of the surgical instrument 3 to operate. Electric power can be supplied and surgery can be performed.

Although the terminal 18 of the surgical instrument 3 is made to be extendable and contractible, the present invention is not limited to this. The electrode side of the trocar 2 may be made to be extendable and extendable. Is configured to be rotatable while sliding, but the present invention is not limited to this, and the electrode side of the trocar 2 may be configured by a rotatable connector, and a telescopic terminal 18 may be inserted into this connector.

In the present embodiment, the jaw-type ultrasonic incision coagulator is shown as an example of the surgical tool 3, but the present invention is not limited to this. It may be a scalpel or the like.

FIG. 6 is a configuration diagram showing a configuration of a surgical apparatus according to a second embodiment of the present invention.

Since the second embodiment is almost the same as the first embodiment, only different points will be described, and the same components will be denoted by the same reference numerals and description thereof will be omitted.

(Structure / Action) In general, in order to treat the abdominal cavity, a trocar for forceps for lifting and excluding an organ,
A plurality of trocars such as a trocar for forceps for applying an appropriate tension to a treatment site, a trocar for inserting a surgical instrument, and a trocar for inserting an endoscope for observing an organ are required.

Therefore, in the present embodiment, a description will be given of a surgical apparatus capable of operating by inserting a plurality of surgical tools into such a plurality of trocars.

As shown in FIG. 6, the surgical apparatus 101 of the present embodiment can use a plurality of trocars, for example, a first trocar 102a, a second trocar 102b, and a third trocar 102c.
2a, second trocar 102b, third trocar 102
A desired surgical tool (not shown) can be inserted into c to perform surgery.

The first trocar 102a has a power cord 6
Input electrode 103 for detachably connecting the
It has an output electrode 104 for supplying power to the trocar 102b and the third trocar 102c.

The power cord 6 includes the first trocar 102
a of the first trocar 10
One end of a connection cord 105 is connected to the output electrode 104a of FIG. 2a, and the connection cord 105 is branched into two in the middle. The other end of the branched connection cord 105 is connected to the second trocar 102b and the third Each of the trocars 102c is connected to an electrode.

Therefore, when the power cord 6 is connected to a power supply for medical equipment (not shown), the current flows through the first trocar 102a, the second trocar 102b, and the third trocar 1
02c, it is possible to drive a surgical tool or the like inserted into each trocar.

(Effects) As described above, in this embodiment, in addition to the effects of the first embodiment, the surgeon can supply power to a plurality of trocars by connecting the power cord 6 to one trocar. Pre-operative setup is easy, and
It does not hinder the operation of the surgeon.

[Supplementary note] (Supplementary note 1) A trocar inserted percutaneously into the body cavity, and an insertion portion inserted into the trocar, and the tip of the insertion portion is protruded from the body cavity. A surgical tool configured to provide a tissue in the body cavity with electric energy from the distal end of the insertion portion to treat the tissue, and an energy supply unit configured to supply the surgical tool with the electric energy. In the device, the surgical tool is provided along an insertion axis of the insertion portion, and includes a contact electrode that is extendable and contractible in the insertion axis direction, and the trocar is connected to the contact electrode when the surgical tool is inserted. A contact contact that is in electrical contact with the contact electrode to electrically contact the contact electrode; and an electrical energy receiving terminal that is electrically conductive with the contact contact and receives electrical energy from the energy supply means. Surgical device according to claim.

(Supplementary note 2) The surgical apparatus according to supplementary note 1, wherein the contact point and the contact electrode are electrically connected so as to be rotatable around the insertion shaft.

(Additional Item 3) A trocar that is inserted into a body cavity percutaneously, and an insertion portion that is inserted into the trocar, and a tip of the insertion portion is protruded from the body cavity to generate electric energy A surgical instrument configured to provide energy from the distal end of the insertion portion to the tissue in the body cavity to treat the tissue, and an energy supply unit configured to supply the surgical tool with the electric energy. The surgical instrument includes a contact electrode provided along an insertion axis of the insertion portion, and the trocar contacts the contact electrode when the surgical instrument is inserted and is electrically connected to the contact electrode. A contact point, and an electric energy receiving terminal electrically connected to the contact point and receiving electric energy from the energy supply means. A surgical apparatus characterized in that one of them is extendable and contractible in the insertion axis direction.

(Additional Item 4) The surgical apparatus according to Additional Item 3, wherein the abutting contact and the contact electrode are electrically connected so as to be rotatable around the insertion shaft.

[0039]

As described above, according to the surgical apparatus of the present invention, the trocar receives electric energy from the electric energy receiving terminal and supplies electric energy to the surgical instrument by electrical conduction between the contact point and the contact electrode. Therefore, there is an effect that electric energy can be reliably supplied to the surgical instrument with a simple configuration, and the operability of the surgical instrument at the operation section can be improved.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a configuration of a surgical apparatus according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram showing a configuration of the surgical instrument in FIG. 1;

FIG. 3 is a sectional view showing a configuration of a hand portion of the trocar of FIG. 1;

FIG. 4 is an explanatory view illustrating an example of a surgical operation using the surgical apparatus in FIG. 1;

FIG. 5 is a configuration diagram showing a configuration of a modified example of the surgical instrument in FIG. 2;

FIG. 6 is a configuration diagram showing a configuration of a surgical apparatus according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Surgical apparatus 2 ... Trocar 3 ... Surgical tool 4, 11 ... Insertion part 5 ... Hand part 6 ... Power cord 12 ... Forceps part 13 ... Operation part 14 ... Fixed grip part 15 ... Movable grip part 16 ... Ultrasonic drive part 17 ... Switch 18 ... Terminal 19 ... Lead wire 21 ... Groove electrode 22 ... Power supply electrode

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Akira Shiga 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Industrial Co., Ltd. (72) Inventor Shinji Hatta 2-43-2 Hatagaya, Shibuya-ku, Tokyo Within Olympus Optical Co., Ltd. (72) Masaru Karasawa 2-43-2, Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Co., Ltd. (72) Koji Yasunaga 2-43-2, Hatagaya, Shibuya-ku, Tokyo No. Olympus Optical Co., Ltd. (72) Hiroyuki Yamamiya, Inventor 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Co., Ltd. (72) Takeaki Nakamura 2-43, Hatagaya, Shibuya-ku, Tokyo No. 2 Olympus Optical Co., Ltd. F term (reference) 4C060 GG28 JJ12 JJ17 KK03 KK06 KK10 KK15 KK23

Claims (1)

[Claims] 1. A trocar inserted percutaneously into a body cavity, and an insertion portion inserted into the trocar, wherein a tip of the insertion portion is protruded into the body cavity, and the body cavity is exposed to electric energy. A surgical instrument configured to provide energy from the distal end of the insertion portion to the internal tissue to treat the tissue, and an energy supply unit configured to supply the surgical tool with the electric energy. Is provided along the insertion axis of the insertion portion,
A contact electrode which is extendable and contractible in the insertion axis direction, wherein the trocar is in contact with the contact electrode when the surgical instrument is inserted, and is electrically connected to the contact electrode; A surgical operation device comprising: an electrical energy receiving terminal that is electrically connected to a contact and receives electrical energy from the energy supply unit.