JPS6364212B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides an ion sensor needle in a forceps for an endoscope so that it can be moved forward and backward. The present invention relates to endoscopic forceps that make it possible to

In recent years, in addition to optical observation and diagnosis inside body cavities,
Endoscopes are also widely used when performing examinations using treatment instruments.

When examining an affected area in a body cavity using the above-mentioned treatment device, an ion sensor is brought into contact with the affected area to measure the ion activity of the liquid tissue, or a piezoelectric element is brought into contact with the affected area to transmit and receive ultrasonic waves. The condition of the affected area was measured using sound waves. This ultrasonic measurement cannot accurately measure tissue components, etc., and measurement by contacting with an ion sensor is
There was a problem in that it was impossible to measure the deep inner part of the affected area.

This invention was made in view of the above-mentioned points, and an ion sensor needle is provided in a forceps used by inserting it into a channel of an endoscope so that it can be moved forward and backward, and an operator performs a biopsy using the forceps. It is an object of the present invention to provide an endoscopic forceps which is capable of measuring ion activity in a deep part by puncturing with an ion sensor needle.

The present invention will be specifically described below with reference to the drawings.

1 to 4 show an embodiment of the present invention, FIG. 1 is a schematic front view showing the entire embodiment, and FIG. 2 shows the forceps in FIG. 1 in an open state. The tip part is shown, FIG. 3 shows the slotted spring that fixes the puncture ion sensor, and FIG.
A cross-sectional view of the tip of the forceps is shown. In these figures, the endoscope forceps of this embodiment has a tip having a pair of cup-shaped cutting blades 2, 2' as a forceps piece provided on the distal side of the insertion section 1 that is inserted into the endoscope channel. In addition to the forceps function for sample collection, in which the forceps part 3 can be operated with the operation part 4 connected to the proximal end of the insertion part 1, the (puncture) ion sensor needle 5 is configured to be able to move forward and backward. .

That is, the distal forceps section 3 provided at the distal end of the insertion section 1 formed of a flexible tightly wound coil 6 can be opened and closed, and when it is closed, the living tissue is cut out, and the cut tissue piece is stored and sampled. A pair of cup-shaped cutting blades 2, 2' are attached for collecting the . This cutting blade 2,
The rear end bases 7, 7' of 2' are formed into an egg shape, and these egg-shaped bases 7, 7' are formed along a slot groove provided from the center of the side of the distal forceps section 3 to the distal end side. Pivot pins 8 attached to the tip forceps 3 on both sides of the groove
It is configured so that it can rotate around the The ends of the bases 7, 7' are rotatably connected by pins 10, 10' provided at one end of each link 9, 9', and the other ends of the links 9, 9' are It is pivotally supported by pins 12 and 12' provided at one end of a joint portion 11 that is movable back and forth.

A connecting pipe 13 is fixed to the joint part 11 in the tip forceps part 3 by passing through a through hole in the center, and the distal end thereof passes through the through hole of the pivot pin 8 as shown in FIG. Connect pipe 13 with slot spring 14
The tip of the needle and the base of the puncture ion sensor needle 5 are connected and fixed (this fixation may be done by brazing, etc.)
When the joint part 11 moves forward, both links 9,
9' separates the pins 10, 10', rotates the bases 7, 7' sides of the cup-shaped cutting blades 2, 2' around the pivot pin 8, and opens both cutting blades 2, 2'. ,
The puncture ion sensor needle 5 is configured to protrude forward.

As a sensor that can measure ion activity by puncturing, for example, as disclosed in Japanese Patent Application Laid-Open No. 56-7924, a gate insulating film of an insulated gate transistor structure is made of four layers including a silicon oxide layer, an inorganic layer, etc. If a structured sensor is used, the above-mentioned ion activity can be measured by being brought into contact with an electrolytic liquid substance forming a living tissue.

On the other hand, the rear end of the connecting pipe 13 is inserted and fixed into a flexible tube 21 covered with a tightly wound coil 6, and the proximal end of this tube 21 is attached to the operating section 4. It is fixed to the sliding part 22. A signal line 2 inserted through the connecting pipe 13 of the ion sensor needle 5 is inserted into the hollow of the tube 21.
3 is inserted through the slider 22 provided on the operating section 4.
The base portion 24 is configured to be connectable to an external display device (not shown) via a signal cable 25 or the like.

The tip of the densely wound coil 6 is attached to the tip forceps portion 3.
The rear end portion is fixed to a fixing member 26 of the operating section 4.

The sliding portion 22 to which the proximal end of the tube 21 is connected extends rearward from the fixing member 26 and is guided by two parallel guide rods 28, 28 fixed at the front end base of the finger hook portion 27. A through hole is provided so that it can be slid and moved.

In this embodiment, the function of maintaining the function of the biopsy forceps by opening and closing the cutting blades 2, 2' of the tip forceps part 3 by moving the sliding part 22 back and forth in the operation part 4 on the hand side is provided. In addition, it is characterized in that the ion sensor needle 5 is configured to move back and forth and have the function of an ion sensor.

In the embodiment configured as described above, when measuring with the ion sensor needle 5, the endoscopic forceps of this embodiment are inserted into the channel of the endoscope (not shown), and observation is performed using the endoscope. While doing so, place the cutting edges 2, 2' at the tip near the affected area to be measured, and slide the sliding part 22 forward by placing your finger on the finger hook 27 of the operating part 4. The joint part 11 moves forward inside the tightly wound coil 6 and is attached to the tip of this tube 21.
and the connecting pipe 13 moves forward.

In this case, the links 9 and 9' pivotally supported by the joint portion 11 that has moved forward have a pair of cup-shaped cutting edges 2,
2' are rotated away from each other using the pivot pin 8 as a fulcrum, and from the state shown in FIG.
Open the cutting edges 2, 2' on the tip side as shown in the figure.
Along with this movement, the connecting pipe 1 was moved forward.
As shown in FIG. 2, the ion sensor needle 5 fixed at the tip of the needle 3 protrudes forward from the open cutting blades 2, 2', so that it can puncture the affected area where the ion activity is to be measured.

An electric signal corresponding to the ion activity at the site punctured by the ion sensor needle 5 is provided on the side of the sliding part 22 on the proximal side by a signal line 23 passed through the tube 21. It is connected to an external signal cable 25 at the base portion 24, and is displayed on a display device (not shown) via this signal cable 25.

After the measurement using the ion sensor needle 5, the forceps are retracted and the sliding part 22 is slid backward, as shown in FIG. It will be kept inside.

On the other hand, when performing a biopsy by collecting the affected tissue using the cup-shaped cutting blades 2 and 2', the ion sensor needle 5 retreats and the front ends of the cup-shaped cutting blades 2, 2' close, the affected tissue can be cut and tissue for biopsy can be collected.

In the embodiment described above, the ion sensor needle 5 is configured to move forward and backward in conjunction with the opening and closing movements of the cup-shaped cutting blades 2 and 2' of the tip forceps portion 3, but the ion sensor needle 5 is moved forward and backward in conjunction with the opening and closing movements of the cup-shaped cutting blades 2 and 2' of the tip forceps portion 3. It can also be configured to operate. In this case, the connecting pipe 13 is connected to the through hole of the joint part 11 and the tube 2.
1 so that it can be fitted loosely without being fixed, and an operating wire is attached to the rear end of this connecting pipe 13.
The wire is inserted through the tube 21 and wound independently on the proximal side to move the ion sensor needle 5 on the tip side backward, or it is wound back and fed out forward to move the ion sensor needle 5 forward. You can also do that. In this case, the operation is as follows:
The ion sensor needle 5 must be moved back and forth at the tip of the cup-shaped cutting blades 2, 2' with the cutting blades 2' open, but this is not limited to this example. It is also possible to provide a hole for opening.

In the above embodiments, the forceps are described in which the tip forceps portion 3 is provided with cup-shaped cutting edges 2, 2', but the forceps are of course not limited to such a shape, and may be Biopsy forceps or other forceps having gripping or clamping pieces that open and close may also be used.

As described above, according to the present invention, the forceps which can be inserted into the channel of the endoscope and which has a function such as opening and closing and gripping (and cutting function) or clamping function at the tip of the insertion part can be inserted into the channel of the endoscope. Since the ion sensor needle is configured so that it can be moved back and forth on the hand side, it can be used to measure the ion activity deep in the affected area in addition to the normal biopsy function using forceps. There is an effect that it can be done. Furthermore, by using the forceps of this invention, both of the above functions can be operated at once, which has the effect of greatly reducing the pain inflicted on the patient and allowing the operator to quickly learn the condition of the affected area. .

[Brief explanation of drawings]

1 to 4 relate to an embodiment of the present invention, FIG. 1 is a schematic front view showing the entire embodiment, and FIG. 2 is a state in which the forceps shown in FIG. 1 are opened. FIG. 3 is a perspective view showing the slotted spring, and FIG. 4 is an enlarged cross-sectional view of the tip shown in FIG. 1. 1... Insertion part, 2, 2'... Cutting blade, 3... Tip forceps part,
4...Operation unit, 5...Ion sensor needle, 6...Tightly wound coil, 7,7'...Base, 8...Pivot pin, 9,
9'...Link, 11...Joint part, 13...Connection pipe,
14... Slit spring, 21... Tube, 22... Sliding part, 23... Signal line, 24... Base part.

Claims (1)

[Scope of Claims] 1. An insertion section that is connected to a proximal operation section and that can be inserted into a channel of an endoscope, and an insertion section that can be operated by the operation section and that is attached to the tip of the insertion section for collecting a sample. An endoscopic forceps having a forceps piece that can be opened and closed, which can move forward and backward in conjunction with the opening/closing movement of the forceps piece or independently, and includes a puncture ion sensor housed in the forceps piece and a puncture ion sensor housed in the insertion part. A forceps for an endoscope, characterized in that it is equipped with a signal transmission line for a puncture ion sensor that is passed through to a proximal operation part. 2. The puncture ion sensor is configured to move forward and backward from the forceps piece in conjunction with the opening and closing movement of the forceps piece, or to move forward and backward independently when the forceps piece is opened. Endoscopic forceps.