JPH0584309A - Water supply connector device of medical instrument - Google Patents

Abstract

PURPOSE:To prevent excessive water supply pressure resulting in breakage from being applied to a medical instrument when the medical instrument is put in the connecting state. CONSTITUTION:A leak opening portion 9 is provied on the wall surface of a connector main body 1. When the water supply pressure in the connector main body 1 is smaller than a designated value, the opening portion 9 is held in the blocking state, and when the water supply pressure in the connector main body 1 is increased above the designated value, the opening portion 9 is opened to let the water in the connector main body leak.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water supply connector device for a medical instrument for connecting a syringe with an endoscope, a guide catheter or the like.

[0002]

2. Description of the Related Art In recent years, it has become possible to insert an endoscope into a thin lumen such as a blood vessel by reducing the diameter of the endoscope. When using such an endoscope, a guide catheter or other means is used to guide the endoscope to the observation site, and between the guide catheter and the endoscope in order to eliminate blood and secure a field of view.
Alternatively, the work of sending physiological saline from a channel provided in the endoscope is performed.

Here, when a syringe for supplying physiological saline is directly attached to the channel mouthpiece of the endoscope, a surgeon who holds the operation section of the endoscope and the syringe, the operation section of the endoscope, and the syringe. Will be closer to. In such a state, it is difficult for the operator to operate the syringe and the operability of the endoscope is deteriorated. Therefore, it is necessary to separate the endoscope from the syringe.

When an endoscope or a treatment tool is inserted in the guide catheter and the syringe is connected in this state, or when the treatment tool is inserted in the endoscope channel and the syringe is connected in this state For example, as shown in JP-B-60-1745 and JP-B-60-7744, the proximal side of the catheter or the insertion part of the endoscope channel is divided and a syringe connection part is newly branched to this divided part. Since it has to be provided separately, there is a problem that the configuration of the catheter and the endoscope becomes complicated.

Therefore, depending on the situation, a water supply connector device is provided between a pressurized water supply device such as a syringe and a medical device such as an endoscope or a guide catheter, and pressurized water supply is performed through this water supply connector device. A structure for connecting the device and the medical device has been used.

[0006]

Generally, in the case of an endoscope for observing the inside of a thin lumen such as a blood vessel, the inner diameter of the guide catheter or the channel is small, so that the endoscope can be inserted into the guide catheter or the channel When the treatment tool is put inside, the pipe line through which the water supply liquid flows becomes further narrowed. Therefore, in this state, in order to secure a sufficient field of view of the endoscope by supplying physiological saline between the guide catheter and the endoscope or through a channel provided in the endoscope, It is necessary to supply water at a high pressure during the interval or in a water supply conduit such as a channel provided in the endoscope.

However, when the water supply pressure between the guide catheter and the endoscope or the water supply conduit such as a channel provided in the endoscope becomes too high, the water supply connector device is more durable than the water supply connector device. There has been a problem that the weak portion, that is, the connection portion between the channel inside the endoscope and the tube portion of the guide catheter and the mouthpiece on the proximal side is damaged by water pressure. For this reason, the water supply may leak from the damaged part, the operability and observation ability of the endoscope may be deteriorated, and the water supply leaked from the tube may affect the operator or the patient and hinder the operation. ..

The present invention has been made in view of the above circumstances, and an object thereof is such that when a medical instrument having a conduit for pumping a liquid into a living body is connected, the medical instrument may be damaged. It is an object of the present invention to provide a water supply connector device for a medical instrument capable of preventing an excessive water supply pressure from acting.

[0009]

SUMMARY OF THE INVENTION The present invention relates to a water supply connector device for a medical instrument, wherein a connector body is provided with a pressurized water supply mouthpiece to which a pressurized water supply equipment is connected and an instrument connection mouthpiece to which a medical equipment is connected, respectively. An opening for leakage is provided on the wall surface of the connector body, and the opening is held in a closed state when the water supply pressure in the connector body is smaller than a predetermined value, and the water supply pressure in the connector body is a predetermined value. A leak mechanism is provided to open the opening when it further rises to leak water in the connector body.

[0010]

[Function] The leak mechanism of the connector body works only when the water pressure from the pressurized water supply device reaches a predetermined pressure in a state where the pressurized water supply device is connected to the medical device through the connector body, and The opening for leakage on the wall surface is opened so that the water in the connector body is leaked.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS.
Will be described. FIG. 1 shows a schematic configuration of a water supply connector device of a medical instrument, and 1 is a connector body of the water supply connector device.

At the base end of the connector body 1, there is provided a pressurized water supply mouthpiece 2 to which a pressurized water supply equipment 4 such as a syringe or a pump is connected in a liquid-tight state. Further, a medical instrument 5 such as an endoscope or a guide catheter is connected to the distal end of the connector body 1 in a liquid-tight state by an instrument connection base 3
Is provided. In this case, the instrument connection mouthpiece 3 has a double cylinder including an inner cylinder portion 3a having a tapered taper surface formed on the outer peripheral surface thereof and an outer cylinder portion 3b having a seal ring protruding from the inner peripheral surface thereof. Are formed, and these inner cylindrical portion 3a and outer cylindrical portion 3b are formed.
The connection end of the medical device 5 is connected between and in a liquid-tight manner.

On the outer peripheral surface of the connector body 1, a treatment instrument insertion opening 6 is provided in a branched state. A rubber cap 7 is provided at the tip of the treatment instrument insertion port body 6.
A slit 7a for inserting a treatment tool is formed in the rubber cap 7, and the treatment tool 8 is inserted into the treatment tool insertion opening 6 in a liquid-tight state from the slit 7a. The treatment instrument insertion opening 6, the rubber cap 7, and the treatment instrument 8 are not necessarily provided and may be omitted.

Further, a leak opening 9 and a rubber sheet 10 for closing the opening 9 are liquid-tightly bonded to the pipe wall of the connector body 1. Also, rubber sheet 1
A balloon tube 11 that covers the connector body 1 around the entire circumference of 0 is provided. Both ends of the balloon tube 11 are fixed to the outer peripheral surface of the connector body 1 in a liquid-tight state by means such as adhesion.

The sheet surface of the rubber sheet 10 is shown in FIG.
A fragile portion (leak mechanism) 12 shown in (A) is provided. As shown in FIG. 2 (B), this is a cut portion 1 in which a cut surface of one side of the rubber sheet 10 is cut with an appropriate depth.
2a are arranged in parallel in a dotted line as shown in FIG. 2A, and are set so that the rubber sheet 10 easily breaks from the fragile portion 12 when a predetermined pressure is applied to the rubber sheet 10. There is.

Next, the operation of the above configuration will be described.
First, when the water supply connector device is used, the medical device 5 is connected to the device connection mouthpiece 3 at the tip of the connector body 1, and the pressurized water supply device 4 is connected to the pressurized water supply mouthpiece 2 at the base end. In this state, for example, the piston 4a of the syringe of the pressurized water supply instrument 4 is pressed to start water supply. Here, when the water supply pressure in the connector body 1 is smaller than a predetermined value, the leak opening 9 is held in a closed state by the rubber sheet 10.

In addition, in order for the operator to obtain a large amount of water,
When pressure is continuously applied to the piston 4a of the syringe of the pressurized water supply device 4 and the water supply pressure in the connector body 1 rises above a predetermined value, the fragile portion 12 of the rubber sheet 10 breaks. In this case, the water supply liquid in the connector body 1 flows out into the gap between the connector body 1 and the balloon tube 11, and the balloon tube 11 is deformed into a swollen state as shown in FIG.

Therefore, in the case of the above-mentioned structure, it is possible to easily detect that the operator applies a high water supply pressure by inflating the balloon tube 11, so that the pressurized water supply device 4 after that can be easily detected. Pressurization of the piston 4a of the syringe can be stopped. Therefore, this connector body 1
It is possible to prevent the excessively high water supply pressure that may damage the medical instrument 5 connected to the.

Further, as in the second embodiment of the present invention shown in FIG. 4, the portion 1 of the connector body 1 on the side of the instrument connection cap 3 is shown.
b is divided from the portion 1a on the pressurized water supply mouthpiece 2 side, and the portion 1a on the pressurized water supply mouthpiece 2 side and the portion 1b on the instrument connection mouthpiece 3 side are connected via a flexible tube 13. Good.

Further, in the above-described embodiment, the fragile portion 12 is formed by arranging a plurality of cut portions 12a having cuts of an appropriate depth on one side of the rubber sheet 10 along a straight line in a dotted line. Although the configuration is shown, as shown in FIG. 5, a plurality of cut lines 21a are provided in a dotted line along a straight line.
, 21b may be arranged in a substantially cross shape to form the fragile portion 21.

Further, as shown in FIGS. 6 (A) and 6 (B), a concave portion 2 having an appropriate depth is formed on the sheet surface on one side of the rubber sheet 10.
2 may be formed, and the fragile portion 23 may be formed by the thin portion around the concave portion 22.

Further, the fragile portions 12, 21 and 23 described above are provided on one side of the rubber sheet 10 facing the connector body 1, but may be provided on the side of the contact surface with the balloon tube 11. It may be provided on both sides.

7 and 8 show a third embodiment of the present invention. This is an opening 9 for leakage when the water supply pressure in the connector body 1 rises above a predetermined value.
The configuration of the leak mechanism 31 that opens to open and leaks water in the connector body 1 is changed.

That is, in this embodiment, the connector body 1
The valve seat portion 9a is formed by cutting and raising the end edge portion of the opening 9 for leaking to the outside on the pipe wall. An opening of a cylindrical body 32 having a bottomed cylindrical shape is fitted in the valve seat portion 9a.

Further, a drainage nozzle 33 is provided at the center of the bottom portion of the cylindrical body 32, and the drainage nozzle 33 is provided.
A drainage tube 34 is connected to the. Further, inside the cylindrical body 32, a spherical valve body 35 having a diameter larger than the hole diameter of the leak opening 9 of the connector body 1 and the spherical valve body 35.
A spring member 36 for urging the opening portion 9 in the closing direction of the opening 9 is provided.

Next, the operation of the above configuration will be described.
First, when using the water supply connector device, the drain nozzle 33
One end of the drainage tube 34 is connected to. The other end of the drainage tube 34 is connected to a beaker or the like (not shown) for collecting drainage liquid.

In this state, for example, the piston 4a of the syringe of the pressurized water supply instrument 4 is pressed to start water supply. Here, when the water supply pressure in the connector body 1 is smaller than a predetermined value, the opening 9 for leakage is held by the spherical valve body 35 by the biasing force of the spring member 36.

Also, in order for the operator to obtain a large amount of water,
When pressure is continuously applied to the piston 4a of the syringe of the pressurized water supply instrument 4 and the water supply pressure inside the connector body 1 rises above the biasing force of the spring member 36, the spherical valve element 35 is pressed by the water supply pressure as shown in FIG. Away from the leak opening 9
The water supply liquid in the connector body 1 flows out from the leak opening 9 through the inside of the cylindrical body 32 to the drainage tube 34 side.

When the operator stops the pressurized water supply for pressing the piston 4a of the syringe of the pressurized water supply device 4 and the pressure inside the connector body 1 and the medical device 5 decreases, the spherical valve body 35 is attached with the spring member 36. It is pressed against the leak opening 9 by the force, and the leak opening 9 is closed again in a liquid-tight state.

Therefore, in the above structure, when the water supply pressure in the connector body 1 rises above the urging force of the spring member 36, the spherical valve element 35 is pressed by the water supply pressure and separated from the leak opening 9. The water supply liquid in the connector body 1 passes through the leak opening 9 through the inside of the cylindrical body 32, and the drainage tube 3
Since it can be discharged to the 4 side, the subsequent pressurization of the piston 4a of the syringe of the pressurized water supply instrument 4 can be stopped. Therefore, also in this case, it is possible to prevent an excessive water supply pressure that may damage the medical instrument 5 connected to the connector body 1.

Further, when the pressurized water supply of the piston 4a of the syringe of the pressurized water supply device 4 is stopped, the leak opening 9 returns to the state of being closed liquid-tight again, so that it can be reused.

Further, while the high pressure is acting on the inside of the connector main body 1, the water supply liquid always flows out from the leak opening 9, so that the operator does not notice that the high pressure is applied, and the water supply is further performed. Even if the above is continued, it is possible to prevent the internal pressures of the connector body 1 and the medical device 5 from rising, and prevent the connected medical device 5 from reaching an excessive pressure that causes damage. Further, since the water supply liquid flowing out from the leak opening 9 through the inside of the tubular body 32 to the drainage tube 34 side can be freely collected from the drainage tube 34 according to the need of the operator, it is accidentally scattered to the outside. , There is nothing that hinders surgery.

9 to 11 show a fourth embodiment of the present invention. The leak mechanism 41 of this embodiment
Has the following structure. That is, in this embodiment, the protruding portion 42 protruding outward is formed on the outer peripheral surface of the connector body 1.

As shown in FIG. 10, a concave portion 42a and a leak passage 43 that communicates between the inside and the outside of the concave portion 42a are formed inside the protruding portion 42.
The leak port 43a on one end side of the leak passage 43 is formed in the inner bottom portion of the recess 42a. Further, the base end of a drainage nozzle 44 is connected to the leak port on the other end side of the leak passage 43, and a drainage tube 45 is connected to the drainage nozzle 44.

Further, the leak passage 4 is provided inside the protruding portion 42.
An electromagnetic opening / closing valve 46 for opening / closing the leak port 43a of No. 3 is provided. The electromagnetic opening / closing valve 46 has a leak port 43a.
Is provided with a flange portion 46a having a diameter larger than the diameter.
The electromagnetic opening / closing valve 46 is opened / closed by an electromagnetic valve operating circuit 47.

Further, a pressure hole 48 communicating with the outside is formed on the outer peripheral surface of the connector body 1. This pressure hole 4
A pressure converter 49 is fixed to the outside of 8 in a liquid-tight state. The pressure detection surface of the pressure converter 49 faces the pressure hole 19.

Further, the pressure converter 49 and the solenoid valve operating circuit 4
The cable 7 is electrically connected to the cable 7. The solenoid valve actuation circuit 47 is connected to a power source 51 via a power cable 52. Electric power is supplied from the power supply 51 to the solenoid valve actuation circuit 47, and this electric power is also supplied to the pressure converter 49 via the power supply cable 53. The power supply cable 52 may be omitted by incorporating the power supply 51 in the solenoid valve actuation circuit 47.

Next, the operation of the above configuration will be described.
When the water supply connector device is used, the piston 4a of the syringe 4 of the pressurized water supply device 4 is pressed to start water supply. At this time, the water pressure is constantly converted into a voltage signal by the pressure converter 49 that is in contact with the water liquid in the connector body 1. This voltage signal is transmitted to the solenoid valve actuation circuit 47 through the cable 50.

Here, when the water supply pressure in the connector main body 1 is smaller than a predetermined value, the electromagnetic opening / closing valve 46 is leaked from the leak passage 43 by the electromagnetic force of the solenoid valve operating circuit 47 as shown in FIGS. 9 and 10. The mouth 43a is held at a position where it is closed in a liquid-tight state.

When the internal pressures of the connector body 1 and the medical device 5 rise, the voltage signal output from the pressure converter 49 also rises. And a predetermined voltage (that is, water pressure)
11, the solenoid valve operating circuit 47 operates to move the solenoid on-off valve 46 to a position where the leak port 43a of the leak passage 43 is opened, as shown in FIG. As a result, the water supply liquid in the connector main body 1 flows out from the recessed portion 42a of the projecting portion 42 to the drainage tube 45 side through the leak port 43a and the leak passage 43. The pressure does not exceed the specified pressure.

Furthermore, when the operator stops the pressurized water supply of the piston 4a of the syringe of the pressurized water supply device 4, the connector body 1
And the pressure in the medical device 5 becomes low and the pressure transducer 49
The voltage signal output from the device will also be low. In this case, the electromagnetic opening / closing valve 46 is moved by the electromagnetic valve operating circuit 47 again to a position where the leak port 43a of the leak passage 43 is closed in a liquid-tight state, and the leak port 43a of the leak passage 43 is closed.

Therefore, in the above structure, when the water supply pressure in the connector body 1 rises above a predetermined set pressure, the voltage signal output from the pressure converter 49 also rises, and the solenoid valve actuation circuit. By 47, the electromagnetic opening / closing valve 46 can be moved to a position where the leak port 43a of the leak passage 43 is opened, and the water supply liquid in the connector body 1 can be discharged from the leak passage 43 to the drainage tube 45 side. The subsequent pressurization of the piston 4a of the syringe of the pressurized water supply device 4 can be stopped. Therefore, also in this case, the medical device 5 connected to the connector body 1 as in the above-described embodiments.
It is possible to prevent an excessive water supply pressure that may damage the pipe.

Further, the voltage value at which the solenoid on-off valve 46 opens is
Since it can be arbitrarily set on the solenoid valve actuation circuit 47 side, the operator can change the leaking pressure according to the medical instrument 5 to be connected.

FIG. 12 shows the connected state of the catheter body 61 and the branch pipe body 62. In this case, a connection port 61a is formed on the outer peripheral surface of the catheter body 61.

Further, the branch pipe body 62 is provided with a connecting portion 63 for connecting to the catheter body 61. This connecting portion 63
A large diameter portion 63a is provided at the center of the core, and small diameter portions 63b and 63c are provided on both sides of the large diameter portion 63a.

Also, the small diameter portions 63b, 6 of the connecting portion 63.
A catheter insertion hole having a diameter substantially the same as the outer diameter of the catheter body 61 is formed in 3c, and a hole portion 65 having a diameter larger than the outer diameter of the catheter body 61 is formed in the large diameter portion 63a.

A branch pipe 62 is provided on the outer peripheral surface of the large diameter portion 63a of the connecting portion 63 so as to project therefrom.
The inside of the second pipe is communicated with the hole portion 65 of the large diameter portion 63a.
Further, a water supply mouthpiece 66 is provided at the tip of the branch pipe body 62.

Further, the branch pipe body 62 and the catheter body 61
When the catheter body 61 is inserted into the catheter insertion holes of the small diameter portions 63b and 63c, the connection port 61a of the catheter body 61 is connected to the hole portion 65 of the large diameter portion 63a.
Is positioned at a position corresponding to, and in this state, the adhesive is injected into the adhesive injection ports 64 formed in the pipe walls of the small diameter portions 63b and 63c so that the inner peripheral surfaces of the small diameter portions 63b and 63c are The outer peripheral surface of the catheter body 61 is bonded.

Therefore, a ring-shaped liquid feed passage is formed by the space between the hole 65 of the large diameter portion 63a and the outer peripheral surface of the catheter body 61, and the inside of the branch pipe body 62 has this ring-shaped liquid feed. Connection port 61 between passage and catheter body 61
It is communicated with the inside of the catheter body 61 via a.

Therefore, in the above-mentioned structure, the position of the connecting end of the branch pipe 62 and the connecting port 6 of the catheter body 61 during the work of connecting the branch pipe 62 and the catheter body 61.
Since the troublesome positioning work with 1a can be omitted, the work can be simplified and the cost can be reduced. The present invention is not limited to the above embodiments, and it goes without saying that various modifications can be made without departing from the spirit of the present invention.

[0051]

According to the present invention, a leak opening is provided on the wall surface of the connector body, and the leak opening is held in a closed state when the water supply pressure in the connector body is smaller than a predetermined value. When the water supply pressure in the main body rises above a predetermined value, a leak mechanism is provided to open the leak opening and leak water in the connector body.Therefore, with the water supply connector and the medical device connected, this connected medical device It is possible to prevent damage due to excessive water pressure. Therefore, it is safe for the patient, the surgeon does not need to pay special attention to the water supply work, the work can be carried out with peace of mind, and the work efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a schematic configuration of a water supply connector device according to a first embodiment of the present invention.

2A and 2B show a rubber sheet, in which FIG. 2A is a perspective view showing a fragile portion, and FIG.

FIG. 3 is a vertical cross-sectional view showing a leaked state of water in the connector body.

FIG. 4 is a vertical sectional view showing a schematic configuration of a water supply connector device according to a second embodiment of the present invention.

FIG. 5 is a perspective view showing a modified example of a rubber sheet.

6A and 6B show another modification of the rubber sheet, wherein FIG. 6A is a perspective view of the rubber sheet, and FIG.

FIG. 7 is a vertical sectional view showing a schematic configuration of a water supply connector device according to a third embodiment of the present invention.

FIG. 8 is a vertical cross-sectional view showing a water leak state of the water supply connector device of FIG.

FIG. 9 is a vertical sectional view showing a schematic configuration of a water supply connector device according to a fourth embodiment of the present invention.

10 is a vertical cross-sectional view showing an electromagnetic on-off valve of the water supply connector device of FIG.

FIG. 11 is a vertical cross-sectional view showing a water leak state of the water supply connector device of FIG.

FIG. 12 is a perspective view showing a connected state of a catheter body and a branch pipe body.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Connector main body, 2 ... Pressurized water supply mouthpiece, 3 ... Device connection mouthpiece, 4 ... Pressurized water supply equipment, 5 ... Medical equipment, 9 ... Opening part, 1
2, 21, 23 ... Fragile part (leak mechanism), 31, 41 ...
Leak mechanism.

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[Procedure amendment]

[Submission date] November 18, 1991

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0015

[Correction method] Change

[Correction content]

The sheet surface of the rubber sheet 10 is shown in FIG.
A fragile portion (leak mechanism) 12 shown in (A) is provided. As shown in FIG. 2 (B), this is a cut portion 1 in which a cut surface of one side of the rubber sheet 10 is cut with an appropriate depth.
2a is intended it has been found provided at a position indicated by a broken line in FIG. 2 (A), the rubber sheet 10 is set so as to easily break the weak portion 12 when a predetermined pressure is applied to the rubber sheet 10.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction content]

Furthermore, though this embodiment shows a structure formed on one side of a straight line vulnerable portion 12 along a cut portion 12a that scored the appropriate depth to the sheet surface of the rubber sheet 10, FIG. As shown in FIG. 5, the fragile portion 21 may be formed by arranging the cut portions 21a ..., 21b.

Claims (1)

[Claims] 1. A water supply connector device for a medical instrument, comprising: a connector body, a pressurized water supply mouthpiece to which a pressurized water supply equipment is connected; and a device connection mouthpiece to which a medical equipment is connected. And an opening for water is provided, the opening is held in a closed state when the water supply pressure in the connector body is smaller than a predetermined value, and the opening is opened when the water supply pressure in the connector body rises above a predetermined value. A water supply connector device for a medical instrument, comprising a leak mechanism that opens to leak water in the connector body.