JPS5883950A - Forcepts for endoscope - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

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, endoscopes have been widely used not only for optical observation and diagnosis of body cavities, but also for examinations using treatment tools.

When inspecting an affected area in a body cavity using the above treatment device, an ion sensor is placed in contact with the affected area to measure the ion activity of the liquid tissue, and a piezoelectric element is placed in contact with the affected area to transmit and receive ultrasonic waves. The condition of the affected area was measured using sound waves. This measurement using ultrasonic waves does not allow accurate measurement of tissue components, and there is a problem in that measuring by contacting with an ion sensor makes it 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 endoscopic forceps that are capable of measuring ion activity in the deep part of the body by puncturing with an ion sensor needle.

The present invention will be explained in detail below with reference to the drawings. Figures 1 to 4 show an embodiment of the present invention, and Figure 1 is a schematic front view showing the entire embodiment. , FIG. 2 shows the tip of the forceps in FIG. 1 in an open state, FIG. 3 shows the split spring that fixes the puncture ion sensor, and FIG. 4 is a cross-sectional view of the forceps tip. shows. In these figures, the forceps for internal stitching of this embodiment are tip forceps having a pair of cup-shaped cutting edges 2.2' as forceps pieces provided on the distal end side of the insertion section 1 inserted into the endoscope channel. In addition to the forceps function for sample collection that allows the part 3 to be operated with the operating part 4 connected to the proximal end of the insertion part 1, the (puncture) ion sensor needle 5 is configured to move forward and backward. That is, the insertion portion 1 is formed of a flexible tightly wound coil 6.
A pair of cup-shaped cutting blades 2 and 2' are attached to the tip forceps part 3 provided at the tip of the forceps 3, which can be opened and closed, and when closed, cut out living tissue and collect the cut tissue pieces to collect a sample. ing. The tip forceps section 3 is configured to be able to rotate around a pivot pin 8 added to the tip forceps section 3. This base 7,
The ends of links 9 and 9' are rotatably connected to pins 10 and 10' provided at one end of links 9 and 9', respectively, and the other ends of links 9 and 9' are rotatably connected to each other. Joint part 1
1 at one end of the pin 12, 12'.

A connecting vibrator 13 is fixed to the joint part 11 in the tip forceps part 3 through the central O through-hole, and its distal end passes through the through-hole of the pivot pin 8 as shown in FIG. The tip of the connecting pipe 13 and the base of the puncture ion sensor needle 5 are connected and fixed by the slotted barb 14 (this fixation can be done by brazing, etc.), and when the joint part 11 moves forward, both links 9
, 9' separates the bins 10, 10', rotates the base 7.7' side of the cup-shaped cutting blades 2, 2' around the pivot pin 8, and opens both cutting blades 2, 2'. At the same time, 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. 79245/1983, 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 side of the connection pipe 13 has a tightly wound coil 6
It is inserted into and fixed to a flexible tube 21 covered with leather, and the proximal end of this tube 21 is fixed to a sliding part 22 provided on the operating part 4. A signal wire 23 that is passed through the connection pipe 13 of the ion sensor needle 5 is inserted into the hollow of the tube 21, and a signal cable 25 or the like is inserted into the base portion 24 of the slider 22 provided on the operating section 4. It is configured so that it can be connected to an external display device (not shown).

The distal end of the tightly wound coil 6 is fixed to the distal forceps section 3, and the rear end thereof is fixed to the fixing member 26 of the operating section 4.

A sliding portion 2 to which the proximal end portion of the tube 21 is connected.
2 extends away from the fixing member 26, and the finger hook is in the part 2.
7 two parallel guide rods 28 fixed at the front end base;
A through hole is provided so that it can be slid by being guided by 28.

In this embodiment, by moving the sliding part 22 back and forth in the limb 1 working part 4 on the proximal side, the tip forceps part 3 is moved back and forth.
In addition to the function of opening and closing the cutting blades 2 and 2' to hold the device @L of this biopsy forceps, the ion sensor needle 5 is configured to move back and forth and have the function of an ion sensor. It becomes.

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 blades 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 operation part 4, and the tube will open. 21 moves forward inside the tightly wound coil 6,
The joint portion 11 and the connecting pipe 13 attached to the tip of the tube 21 move forward.

In this case, the links 9, 9' pivotally supported by the joint part 11 that has moved forward are connected to the bases 7.7 of the pair of cup-shaped cutting edges 2, 2'.
' are rotated away from each other using the pivot pin 8 as a fulcrum,
From the state shown in FIG. 4, the cutting blades 2, 2' on the tip side are opened as shown in FIG.

Along with this movement, the ion sensor needle 5 fixed to the tip of the connecting pipe 13, which has not moved forward, protrudes forward from the open cutting blade 2.2' as shown in Fig. 2, so that the ion activity can be measured. It can be punctured into the affected area.

An electric signal corresponding to the ion activity at the site punctured by the ion sensor needle 5 is sent to the base part 24 provided on the side of the sliding part 22 on the proximal side by a signal line 23 passed through the tube 21. External signal cable 2
5 and is used for display on a display device (not shown) via this signal cable 25.

After the measurement using the ion sensor needle 5, the forceps are moved back and the sliding part 22 is slid toward the ridge, as shown in FIG.
2'.

On the other hand, when performing a biopsy by collecting the affected tissue using the cup-shaped cutting blades 2, 2', the upper bL] ion sensor needle 5
If the sliding part 22 is moved back in the state in which the ion sensor needle 5 is stuck, the ion sensor needle 5 will move back and the cup-shaped cutting edge 2.2'
When the front end is closed, the affected tissue can be cut away and tissue can be taken for biopsy.

In the embodiment described above, the ion sensor needle 5
Although it is configured to move forward and backward, it can also be configured to operate separately without being linked. In this case, the connecting pipe 13 is not fixed by the through hole of the joint part 11 and the tube 21, but can be fitted loosely,
An operating wire is attached to the rear end of this connecting pipe 13, and inserted into the tube 21 (-1). It is also possible to have a structure in which the wire is fed forward and the ion sensor needle 5 is advanced. Not limited to examples, cup-shaped cutting blade 2,
It is also possible to provide a hole at the tip of 2' through which the ion sensor needle 5 can be moved back and forth when the cutting blades 2, 2' are closed.

In the above embodiments, the forceps having the cup-shaped cutting edges 2, 2' on the tip forceps 3 are described, but the forceps are of course not limited to such a shape; 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 are provided with functions such as opening and closing to grasp (and cut) or clamp at the tip of the insertion part that can be inserted into the channel of the wedding bell. Since the ion sensor needle that can measure ion activity is configured so that it can be moved back and forth on the hand side, in addition to the biopsy function using regular forceps, it can also measure the ion activity deep in the affected area. There is an effect that it can be done. Finally, if the forceps of this invention are used, both of the above functions can be operated at once, so the pain caused to the patient can be greatly reduced, and the operator can quickly and easily know the condition of the cervix. There is.

[Brief explanation of the drawing]

1 to 4 relate to one embodiment of the present invention, in which FIG. 1 is a schematic front view showing the whole of one embodiment, and FIG.
The figure is a front view showing the tip of the forceps in the open state in Fig. 1, Fig. 3 is a front view showing the tip of the forceps in an open state, Fig. 3 is a first view showing the slotted part, and Fig. 4 is a front view showing the tip of the forceps in the open state.
FIG. 2 is an enlarged cross-sectional view of the tip portion of FIG. 1; 1... Insertion part 2.2'... Cutting blade 3...
Tip forceps part 4... Operating part 5... Ion separator needle 6... Closely wound coil 7.7'... Base part
8... Pivot pin 9.9'... Link 11.
...Joint part 13...Connection vibrator 14...Slot spring 21...Tube 22...Sliding part 23...
・Signal line 24 ・Creating department agent Patent attorney
Susumu Ito 11- Figure 1 Figure 4

Claims (2)

[Claims] (1) An insertion section that is connected to the proximal operation section and can be inserted into the channel of the endoscope, and a forceps that can be opened and closed for sample collection attached to the tip of the insertion section that can be operated by the operation section. A puncturing ion sensor that is movable in conjunction with the opening/closing movement of the forceps pieces or independently thereof, and that is housed in the forceps channel, and a puncturing ion sensor that moves inside the insertion section to a hand-side operation section. 1. A forceps for an endoscope, comprising a signal transmission line for a puncture ion sensor inserted therethrough. (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 as described in section.