JPS61288822A - Endoscope for blood vessel - 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] [Industrial application field] The present invention relates to a vascular endoscope for observing the inside of a blood vessel.

[Conventional technology]

When observing the inside of a blood vessel, a small-diameter dome is inserted through the incision in the blood vessel, and saline is intermittently squirted from the fluid delivery line opened at the tip of the endoscope. There is a way to observe it. In other words.

Round the field of vision. Secure the field of view by temporarily sprinkling blood with saline. At this time, simply squirting saline does not ensure a good visual field because blood flows through the blood vessels. Therefore, the blood flow was temporarily blocked using a balloon.

It has been considered to ensure that the intravascular field of view can be ensured. In that case, it is difficult to easily ensure a good visual life unless the spouting of saline, the supply of fluid to the balloon to inflate it, and the suction of the supplied fluid are performed in synchronization.

[Appropriate point for the amount that the invention seeks to solve]

However, conventionally, both of the above operations have been performed manually by the operator. In other words, saline was supplied manually using a syringe, and balloon inflation and deflation were also performed manually using a syringe. Because of this, each operation not only becomes very complicated, but also cannot be performed reliably and properly.90 This invention was made with attention to these problems, and the saline water squirting operation is An object of the present invention is to provide a blood vessel endoscope with good operability that can inflate or deflate a balloon in synchronization with the present invention.

[Means and operations for solving the problems] The present invention includes a means 22 for supplying and ejecting fluid to the liquid supply pipe line 17 of the endoscope 1, and a means 22 for supplying fluid to the balloon 26 or sucking the supplied fluid. The device is equipped with means 1g and 29, and means 23 for supplying or suctioning fluid to the balloon 26 in synchronization with the supply of fluid to the liquid supply pipe line 11.

〔Example〕

The present invention will be described below with reference to FIGS. 1 to 5. @1 1 in the figure is an endoscope, and this is operation N2. The insertion portion 3 and the light guide cable 4 are connected to the wooden base of the O light guide cable 4, and the connector portion 7 is detachably attached to the noct portion 6 of the light source device 5.
is provided. Further, the operation section 2 is provided with an eyepiece section 8. Note that this endoscope 1 has a function as a general endoscope. For example, the distal end of the insertion section 3 is provided with an observation optical system, an illumination window, and a channel opening (not shown).

In addition, in one circle of this endoscope, there is a liquid supply pipe line 11 in the shape Fl! It is L. This liquid feeding pipe line 17 is connected to the insertion section 3.1 of the endoscope 1, the working section 2.
It communicates with the liquid in a liquid supply tank 18 installed outside the endoscope l through the light guide cable 4 and the connector part it. A saline solution 19 is placed in this liquid supply tank 18 . Furthermore, one end of the air supply pipe 21 is open to the upper air layer of the liquid supply tank 18 .

The other end side of the air supply pipe line 21 is connected to the source equipment r via the connector part 1t.
It is installed at iL5 and connected to air pump 22 at 9@1. The air supply pump 22 of this first stage is driven and controlled by a synchronous circuit 23. and.

By supplying air to the liquid supply tank 18 through the air supply conduit 21, the saline 19 is pressurized to m pressure and is sent to the liquid supply conduit 11. Also.

An operation switch 25 provided on the operation section 2 is connected to the synchronization circuit 23 via a lead wire 24. A balloon 2 is connected to the tip 0'1111g1 of the insertion section 3.
6 is provided. One end of the air suction tube 21 is connected to the balloon 26 . This chain 21
The other end is branched into two, one of which is connected to the air supply pump 28 @2, and the other to the suction pump 29, respectively. These two air supply pumps 28 and four suction pumps 29 are driven and controlled by the synchronization circuit 23. and.

When the second air pump 28 operates, air is supplied to the balloon 26, causing it to expand, and when the suction pump 29 operates, its suction force removes 9 air from the balloon 26, causing it to contract. There is.

The synchronous circuit 23 has a structure as shown in @2. That is, the ON signal of the upper ε operation switch 25 is the first
Monostable multi +/(Ibrator 31's tri is terminal &1
is input. The amplification circuit 32 and differentiation circuit 33 of the broom 1 are connected to the output terminal Q1 of the multivibrator S1, respectively. The air pump 28 of @2 is connected to the output side of the expansion 151 circuit 32 of @1.
A flip 70 tube 340 set terminal S is connected to the differentiating circuit 33. The output multiplier Qm of this flip-flop 34 is connected to the first amplifier circuit 35t through the second amplifier circuit 35t.
The air supply pump 22 is connected, and the output terminal Ql is connected to the trigger terminal A of the second monostable multivibrator 36. The output terminal Qs of this multivibrator 36
The above-mentioned suction pump 29 is connected to via a third amplification circuit 37. In addition.

When a signal is input to the set terminal S of the flip 7a knob 34, the first air pump 22 is turned on for ms and at the same time, a timer circuit (not shown) is activated.

When this timer circuit times up, the 1!1 air supply pump 22 is stopped.]- At the same time, the 6th signal is input to the reset terminal R of the flip-flop 34, and the flip 70 knob 34 is inverted. It is supposed to be done.

Next, the operation of observing the inside of a blood vessel using the endoscope having the above structure will be explained with reference to the time chart shown in FIG. For example, when observing the inside of the femoral artery, the insertion section 3 of the endoscope 1 is first inserted through an incision made in the blood vessel 41 in the greater stump.

In this case, the insertion section 3 is inserted from the upstream side of the blood flow indicated by the arrow in FIG. If you insert the insertion part 3 to the target site and it's a friend...! t in Figure 3.

When the operation switch 25 provided on the operation unit 2 is turned on as shown in 0, the signal triggers the 41 monostable multivibrators 31, and the output terminals Q,
This logic 1 output signal is output for a predetermined period of time. This output signal is amplified by the first amplification circuit 32 to operate the second air pump 28 for a period of time t, ts) shown in FIG. This supplies air to the balloon 26, which becomes the fourth balloon.
It expands as shown in the figure, blocks the blood vessel 41, and stops the flow of blood from upstream to downstream.

Output terminal Q of the monostable multivibrator 31 in @1 above
When the logic 1 output signal from , falls, the differentiating circuit 33 responds to this and sets the set terminal S of the flip-flop 34.
A set signal is input to . Then, the air supply pump 22 @l is driven by the output from the output terminal Q through the second amplifier circuit 35, and at the same time, a timer circuit (not shown) is also activated. Therefore, the first air supply 4 pump 2
2 is g! Driven for the time (t, -ts) shown in Figure 3,
Liquid sending tank 18t - pressurized saline 19 to liquid sending pipe 17
to be pumped to.

This saline 19 is poured into the opening 16 at the tip of the insertion section 3.
Since blood is ejected from the blood vessel (Jll'9), the blood on the distal surface side of the insertion section 3 is removed and the field of view is secured.In other words,
41 circles of blood vessels can be observed well.

When the timer circuit activated by the output signal from the output terminal Q3 of the flip-flop 34 times up at time t4 shown in FIG. do.

Then, the first air supply pump 22 is stopped and the saline solution 19 stops being ejected, and the monostable multivibrator 36 @2 is triggered, and the output terminal QsK is connected via the third amplifier circuit 77. The suction pump 29 that was
It operates for the time indicated by the prisoner (t, -1+). Therefore, the balloon 26, which had been inflated up to that point, contracts as shown in Figure 5, and the blood blocking state of the blood W47 is released.

That is, according to the above structure, by turning on the next operation switch 25 provided in the operation part 2, air can be supplied to the balloon 26 to stop the flow of blood, and the saline solution 19 (!-
Ejecting the balloon to secure a field of view and contracting the balloon 26 to release the blood from the a[fr state are performed in sequence and in synchronization. Therefore, not only can the field of view inside the blood vessel 41 be reliably secured for a predetermined period of time, but there is no risk of blocking blood flow for a long period of time.

Figures 6 to 1!9 show the case where the insertion section 2 is inserted from @ under the blood flow of the blood vessel 41, and in such a case, Figure 6 and @
A balloon catheter 46 shown in FIG. 7 is used. This balloon catheter 46 has a balloon section 48 connected to the distal end of the catheter section 41. Further, in the synchronization circuit 23 in this case, as shown in the eighth column, the connection positions of the suction pump 29 and the air supply pump 28 of #c2 are reversed from those in the case of the first implementation row. That is, the suction pump 29 is connected to the output side of the tenth vomiting circuit 32, and the second air supply pump 28 is connected to the output side of the third amplification circuit 37. therefore.

As shown in the time chart of FIG. 9, when the operation switch 25t is turned on, the air pump 22 of the suction unit 29°@1 and the second air pump 28 are activated in this order.

In such a structure, once the balloon portion 48 of the balloon catheter 46 is positioned at the target site, air is supplied to the balloon portion 48 to inflate it, thereby blocking the portion downstream of the insertion portion 2 of the blood vessel 41. Next, when the insertion part 2t is positioned downstream of the balloon part 48 and the operation switch 25 is turned on in a good condition, the suction tank 29 is first opened and inserted W12.
the balloon 26 is deflated, and then the first air tank 2
2 is activated and saline water 19 is squirted out.

The blood in front of the insertion section 2 is pushed away to the rear of the insertion section 2. Then, the air pump 28 of @2 expands and blocks the blood fi in this area, so that the balloon part-8 and the balloon 2
Therefore, blood vessels 41 in this area can be observed well.

However, if a small blood vessel 51 is in communication between the balloon portion 48 and the balloon 26 as shown in FIGS. 6 and 7, blood flow from the blood vessel 51 will become impossible to detect in a short period of time.

In that case, if you turn on the operation switch 25 of the operation section 2 again, the process based on the time chart in FIG. 9 will be repeated, so a good field of view will be ensured again. In some cases, the balloon 26 may be deflated by operating the suction pump 29 manually or by any other suitable means.

In addition, in this second embodiment, the balloon section 48 of the balloon catheter 46 is inflated and deflated by the balloon 26.
In order to synchronize with the ejection of saline and saline 19, the @2 air supply pump 28 and the suction tank 29 shown in FIG. It can be used in combination with. In that case, by turning on the operation switch 25, the second air supply pump 28 is activated and the first
As shown in FIG. 0, the balloon 26 and the balloon portion 48 are inflated to block the blood flow in the blood vessel 41. Next, the first air supply pump 22 is activated to squirt out the saline solution 19 to secure the field of view, and then the suction pump 29 is activated to spray the balloon 26.
The balloon portion 48 is contracted, and the blood flow is no longer blocked.

〔Effect of the invention〕

As described above, the present invention provides a vascular endoscope that includes:
A means for supplying and ejecting fluid to the liquid supply pipe of the endoscope, a means for supplying the fluid to the balloon or suctioning the supplied fluid, A means for supplying or suctioning the R body to the balloon was provided. Therefore, blood t
Since the various operations for securing the field of view of P3 can be performed with eye movements and in synchronization, it not only improves the operability, but also has the advantage of easily and reliably securing a good field of view. .

[Brief explanation of the drawing]

Figures 1 to 5 show the first embodiment of this invention.
Figure 41 shows the overall structure, Figure 2 shows the structure of the synchronous circuit, Figure 3 shows the time chart, Figures 4- and 5 each illustrate the operation, and Figures 6 to 9 show the structure of the present invention. Showing the second implementation column, a! Figure 6 and @7 are dynamic explanatory diagrams, @8□□
□ is Mizo Takumi's diagram of the synchronous circuit, and @9 is a time chart diagram. @Figures 10 and 11 show the third salt of the present invention, Example 1, being stirred in operation All during operation, lo...endoscope, 3...insertion section, 17...liquid delivery pipe. 18...Liquid feeding tank, 22...First air feeding pump. 23... Synchronous circuit, 26... Balloon, 28...
Second air supply pump, 29...suction pump. Applicant's representative Patent attorney Atsushi Tsuboi Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 10 Figure 11

Claims (1)

[Claims] an endoscope having a fluid delivery line opened at the distal end of the insertion part; a means for supplying fluid to the liquid delivery pipe and ejecting the fluid from the distal end of the insertion part; a balloon for blocking the fluid, a means for supplying fluid to the balloon or suctioning the supplied fluid, and a means for supplying or suctioning the fluid to the balloon in synchronization with the supply of fluid to the liquid supply pipe. A special vehicle equipped with a vascular endoscope.