JPS60220074A - Drainage tube with monitor - 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 is a drainage tube used in various medical fields such as neurosurgery, and particularly for monitoring the condition of the part of the body where the drainage tube is inserted, tube filling, etc. Regarding drainanochieve with a monitor that can be used.

(Prior Art) In neurosurgery, one method of preventing the development of intracranial pressure caused by intracranial diseases is drainage, which drains cerebrospinal fluid, blood, etc. from the brain from the skull to the outside of the body. As shown in Figure 1, the drainage cheep used for this treatment punctures the brain up to ventricle 2 and drains cerebrospinal fluid 3, and drains cerebrospinal fluid and blood from the sublemural space. After surgery, it is punctured at a predetermined location and guided out of the body. This Cheeve 1 is made of highly elastic material as it punctures directly into the brain.
A soft silicone chip is used to minimize damage to the brain parenchyma. Drainage tubes are also used for testing purposes in cardiac surgery and urology. In such treatments and examinations, it is necessary to simultaneously monitor the condition of the insertion site within the body while using the drainage cheep in order to perform the treatments and examinations safely and effectively.

However, conventionally there has been no method for safely and easily performing such monitoring. In addition, in the case of a drainage chest, since the chest is soft, when the pipe is bent when leading out of the body, cerebrospinal fluid and blood solidify inside the drainage chest, making it impossible to drain the fluid. Accurate treatment was not possible.

(Objective of the Invention) The present invention solves the problems of the prior art as described above, and performs drainage treatment while monitoring the condition of the insertion site of the drainage tube in the body or clogging of the drainage tube. An object of the present invention is to provide a drainage chamber with a monitor that can perform the following.

(Structure of the Invention) The drainage tube with a monitor of the present invention includes a highly flexible tube in which a drainage tube section and a sensor section are formed by longitudinal partition walls, and a tube that monitors the internal state of the body. It is equipped with a sensor section made of a highly flexible tube with a monitoring sensor disposed at its tip. The drainage conduit section is provided with a drainage hole at its distal end, and the sensor section is provided with a drainage hole in at least a part of the section from near the distal end to the distal end. is provided. A sensor section is inserted into the conduit section through the cut and held so that the sensor is located at the tip.

(Example) Fig. 2 is a cross-sectional view of a drainage cino with a pressure monitor according to an embodiment of the present invention, and Fig. 3 is a longitudinal sectional view taken along the plane A-A' in Fig. 2. FIGS. 4 and 5 are views showing the distal end of the drainage team. As shown in these figures, the silicon Q-f4 consists of two pipes, a drainage pipe 5 and a pressure sensor 7 pipe 8, and the two pipes are separated by a partition wall 9. Pressure sensor 7
A vertical cut 1o is formed in the conduit 8 for use.

This notch 10 is for inserting or removing a sensor section consisting of a pressure sensor 7, its lead wire 11, and a tube 17, which will be described later.

Further, a liquid connector 12 is connected to the drainage conduit 5 as a discharge port, and the liquid connectors 12 are branched at each end. Further, the tip 13 of the silicone tube 4 is formed into a hemispherical shape,
A drainage hole 6 communicating with the drainage conduit 5 is provided.

On the other hand, the pressure sensor 7, as shown in FIG. Fixed. An adhesive silicone chip 18 is filled and coated on the top of the semiconductor pressure chip 15 to form a pressure receiving part 19. In addition, the pedestal 14 has a back pressure hole 2.
0 is provided, and the back surface of the semiconductor pressure chip 15 is opened to the atmosphere via the pressure sensor silicone chip 17, making it possible to measure relative pressure with atmospheric pressure as a reference. A lead wire 11 extending from the semiconductor pressure chip 15 is covered with an expanded pressure sensor tube 17 and connected to an electrical connector 21 provided at the other end of the tube 17 .

As shown in FIG. 6, the semiconductor pressure chip 15 heat-diffuses boron (J3) as a Kp-type impurity at a predetermined location of an n-type silicon single crystal plate 71 to form a strained gun point 72 and a diffusion lead part. 73 is formed, and the aluminum electrode 74 is taken out from the diffusion lead part 73. A silicon single-crystal plate 71 has dimensions of 3 m x 200 µm, and a pressure receiving diaphragm 75 is chemically etched from the back side into a rectangular shape of 1 x 0.5 am to have a thickness of 10 µm.

In order to perform drainage treatment, as shown in Figure 1,
When the distal end 13 of the drainage cheap 1 is punctured into the ventricle of the brain, the cerebrospinal fluid 3 passes through the drainage hole 6, passes through the drainage conduit 5, and is discharged from the fluid connector 120 to the outside of the body. On the other hand, the pressure in the ventricle at this time is applied to the pressure receiving part 19 of the pressure sensor 7 as hydrostatic pressure, and the pressure is applied to the silicone rubber 1
Semiconductor pressure is applied to the diaphragm of f15 through 8.

The displacement of the diaphragm due to this pressure is detected as a resistance change in the diffusion strain darts formed on the mineral diaphragm. FIG. 7 shows a measurement circuit including a pressure switch and a switch for displaying the pressure in the ventricle based on the detected resistance change.
C, 72D, etc. are Prisso connected, one pair of opposing connection points 22 and 23 are connected to the bridge drive power supply 26, and the other pair of connection points 24 and 25 are connected to the input of the differential amplifier 27.
A cerebral pressure indicator 28 is connected to the output of a differential amplifier 27. Displacement of the pressure receiving diaphragm 75 due to ventricular pressure appears as a change in resistance of the strain gauge section 72. Therefore, this resistance change is detected as a voltage change between the connection points 24 and 25 of the bridge circuit, and is amplified by the differential amplifier 27. and drives the cerebral pressure indicator 28 to display the pressure in the ventricle.

The Drainage Cheap of this embodiment can constantly monitor the pressure in the ventricles, so it is possible to accurately determine how much cerebrospinal fluid should be drained from the brain during drainage treatment.
It is possible to measure the improvement of treatment effects.

Furthermore, when draining cerebrospinal fluid from one brain, clogging of the drainage conduit 5 or excessive drop in the ventricles can be immediately determined, and therefore safe treatment can be performed. In addition, since cerebrospinal fluid and blood flow through the brain through the ventricular drainage tube, there is a risk of bacterial infection if it is reused, so it is usually disposable.

The drainage cheep with pressure monitor of this embodiment has a double structure of the silicone cheep which plays the role of drainage, and the pressure sensor 7 has a silicone cheep for pressure sensor 1.
7, and during treatment, it is inserted into the silicone tube 1 through the notch 10 and is wrapped and used as an integrated unit. After use, the pressure sensor part in which the pressure sensor 7 and the pressure sensor silicone tube 17 are integrated can be removed from the silicone tube 1 using the notch 10 of the silicone chip 4.
Only the removed pressure sensor part can be reused after cleaning and disinfection. Therefore, the high-performance and expensive pressure sensor section can be safely used for a long period of time and is economical. Since only the drainage tube is disposable, treatment can be performed safely.

Note that the lead wire 11 used is made of silicone steel.
It is preferable to use a thin stainless steel wire so that it will not break or break even if it is bent due to bending of the pulley.

In the above embodiment, a case was explained in which the pressure at the insertion point of the drainage cheap in the ventricle was detected using a pressure sensor. For the sensor, DKJ! It is possible to add l. For example, the sensor includes a gas sensor that measures the partial pressure of carbon dioxide, earth, oxygen, etc. in blood, a blood voice measurement sensor, a blood sugar level measurement sensor, a blood temperature sensor,
Various sensors such as blood flow rate sensors can be applied.

(Effects of the Invention) As described above, the present invention forms a sensor conduit section in addition to a drainage conduit section on the partition wall, and the sensor conduit section has a Since a longitudinal incision is provided and the sensor part is removably embedded, it is possible to simultaneously monitor the state of the insertion position of the cheep in the living body during drainage treatment, making it possible to perform accurate and safe testing and treatment. It becomes possible. In addition, the sensor part is removable and can be removed from the Teague and reused by disinfecting it, which is economical because the expensive sensor does not have to be thrown away. Furthermore, appropriate sensors can be replaced and used depending on the type of examination or treatment, and drainage examination and treatment can be carried out more effectively. In particular, when a pressure sensor is applied as a sensor used in the field of neurosurgery, it is possible to monitor not only the intracranial pressure but also the clogging of the drainage tube.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the mode of use of the drainage tube. FIG. 2 is a cross-sectional view of a drainage tube with a pressure sensor according to an embodiment of the present invention, FIG. 3 is a vertical cross-sectional view taken along plane A-A' in FIG. 2, and FIG. 5 is a diagram showing the distal end of the drainage chest, and FIG. 5 is a sectional view taken along the plane BB' of FIG. 4. FIG. 6 is a plan view of the semiconductor pressure chip. FIG. 7 is a diagram showing a pressure measurement and display circuit. DESCRIPTION OF SYMBOLS 1...Drainage tube, 2...Brain ventricle, 3...Brain to cerebrospinal fluid, 4...Silicon tube, 5...Drainage conduit, 6...Drainage hole, 7... ...Pressure sensor, 8...Pipe line for pressure sensor section, 9...Partition wall, 10.
... cut, Jl ... drawer lead wire, 12 ... liquid connector, 13 ... tip, 14 ... pedestal, 15
...Semiconductor pressure chip, 16...Housing, 17
...Pressure sensor tube, 18.Adhesive silicone rubber, 19.Pressure receiving part, 20.Back pressure hole, 21.
...Electrical connector, 72A. 72B, 72C, 72D... Distorted darts, 22, 23
゜24.25...Connection point, 26...Blip drive power supply, 27...Differential amplifier, 28...Brain pressure indicator. Figure 1 Figure 3

Claims (2)

[Claims] (1) A highly flexible tube with a longitudinal partition wall forming a conduit for the side part and a conduit for the center part, and a sensor installed at the tip to monitor the internal state of the body. The sensor section is made of a highly flexible tube, and the drainage conduit section has a drainage hole at its tip, and the sensor section has a drainage hole at its tip. A drainage device with a monitor, characterized in that a notch is provided in at least a part of the section extending from the vicinity of the part to the distal end, and a sensor part is inserted and held into the conduit part from the notch so that the sensor is located at the tip. Cheeve. (2) The sensor section is characterized by comprising a semiconductor pressure chip, a lead wire that is resistant to bending, and a highly flexible tube that covers the lead wire. Drainage tube with monitor.