Perfusion systems for endoscopes

Abstract

The present invention relates to a perfusion system for an endoscope, comprising a three-way connection, a suction control valve and a liquid recovery container, wherein an insertion tube is arranged at the first end of the three-way connection, an inlet is arranged at the second end of the three-way connection, the third end of the three-way connection is connected to one end of the suction control valve, the other end of the suction control valve is connected to the liquid recovery container, the liquid recovery container is used to communicate with a negative pressure aspirator, when the suction control valve is in an open state and the second end of the three-way connection is in a sealed state, the perfusion system is in a suction state; when the suction control valve is in a closed state, the inlet at the second end of the three-way connection is used to insert surgical instruments or to inject liquid. The perfusion system for an endoscope of the present invention forms a closed circulation system through the three-way connection, the suction control valve and the liquid recovery solution.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to a perfusion system for an endoscope. Background Art

[0002] With the development of society and the improvement of people's lives, as well as the improvement of medical care awareness, people's awareness of endoscopic examinations and census has been continuously improved. Therefore, endoscopic examination has become an important medical device in clinical medicine. Endoscopic examination and treatment have become more and more mature since their clinical use in my country. With the increasing number of minimally invasive procedures that reduce laparotomy through the working channel of the endoscope, the blood in the body cavity during the operation and the mucus left by the flushing solution will affect the observation of the image.

[0003] In order to keep the image clear, the mirror surface needs to be cleaned by water, air and suction. Therefore, the endoscope body including the working channel needs to be strictly cleaned, disinfected or sterilized after use. The purpose is to prevent unnecessary cross infection during the inspection process using the endoscope.

[0004] A novel method of perfusion and recovery of perfusion liquid has been applied clinically in bronchoscopes. Due to the limitations of the inner diameter design of the working channel of traditional bronchoscopes, the current perfusion and recovery of liquid are implemented through the existing working channel and suction pipeline of traditional bronchoscopes.

[0005] Therefore, there is a need for a perfusion system that can avoid cross infection caused by improper cleaning, disinfection and sterilization, reduce the cost expenditure of users, and extract perfusion fluid that can be recycled without contamination. Summary of the invention

[0006] The main purpose of the present invention is to provide a perfusion system for an endoscope that is disposable, avoids cross infection, and can recycle perfusion fluid in order to solve the above problems.

[0007] In order to achieve the above-mentioned object, the technical solution of the perfusion system for endoscope adopted by the present invention is as follows:

[0008] It includes a tee, a suction control valve and a liquid recovery container. The first end of the tee is provided with an insertion tube, the second end of the tee is provided with an inlet, the third end of the tee is connected to one end of the suction control valve, the other end of the suction control valve is connected to the liquid recovery container, and the liquid recovery container is used to be connected to a negative pressure aspirator. When the suction control valve is in an open state and the second end of the tee is in a sealed state, the perfusion system is in a suction state; when the suction control valve is in a closed state, the inlet at the second end of the tee is used to insert surgical instruments or to inject liquid.

[0009] Preferably, the inlet is provided with an adjustable sealing ring, and the adjustable sealing ring is configured to prevent the internal liquid from spraying out in reverse when a surgical instrument passes through the inlet or liquid is poured into the inlet, or to keep the second end of the three-way connection in a sealed state when the perfusion system is in a suction state.

[0010] Preferably, a spiral groove is provided on the front section of the insertion tube at the first end of the tee to facilitate bending.

[0011] Preferably, a fixed connection port is provided at the tail end of the insertion tube at the first end of the tee, and after the insertion tube enters the channel of the endoscope, the first end of the tee is sealed and connected to the channel of the endoscope through the fixed connection port.

[0012] Preferably, the third end of the three-way connection is connected to one end of the suction control valve through a transparent pipeline.

[0013] Preferably, an inverted protrusion strip is provided at the third end of the tee to prevent the transparent pipe from falling off.

[0014] Preferably, a plurality of raised limit blocks are provided at the bottom of the suction control valve to install the suction control valve on the fixed body.

[0015] Preferably, the liquid recovery container comprises a sealing cover body having two interfaces, one of the two interfaces is used to be connected to a suction control valve, and the other of the two interfaces is used to be connected to a negative pressure suction device.

[0016] Preferably, a liquid level sensor and a buzzer are arranged on the inner wall of the liquid recovery container, and when the liquid level sensor detects that the liquid level in the liquid recovery container reaches a preset liquid level, the buzzer emits a buzzing sound.

[0017] The perfusion system for endoscope of the present invention forms a closed circulation system through a three-way connection, a suction control valve, and a liquid recovery solution, and can be made into a disposable system component, thereby reducing the cost and avoiding the risk of cross infection as a disposable component. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the perfusion system for endoscope of the present invention.

[0019] Figure 2 The figure is a partially cut-away view of the perfusion system for an endoscope according to the present invention.

[0020] Figure 3 It is a cross-sectional view of a three-way connection in a perfusion system for an endoscope according to the present invention. DETAILED DESCRIPTION

[0021] In order to more clearly understand the technical content of the present invention, the following embodiments are given in detail.

[0022] like Figures 1 to 3 As shown, a specific embodiment of the perfusion system for an endoscope adopted in the present invention is shown, wherein the perfusion system includes a tee 1, a suction control valve 2 and a liquid recovery container 3, an insertion tube 4 is provided at the first end of the tee 1, an inlet port 7 is provided at the second end of the tee 1, a third end 9 of the tee 1 is connected to one end of the suction control valve 2 through a transparent pipeline 8, and the other end of the suction control valve 2 is connected to the liquid recovery container 3 through a pipeline 10, and the liquid recovery container 3 is used to be connected to a negative pressure aspirator.

[0023] In the perfusion system of the present invention, the suction control valve is located between the transparent pipeline 8 and the pipeline 10, and the connection and blocking between the transparent pipeline 8 and the pipeline 10 are achieved by controlling the opening and closing of the suction control valve; when the suction control valve 2 is in an open state and the second end of the three-way valve 1 is in a sealed state, the perfusion system is in a suction state, and negative pressure suction is provided by a negative pressure aspirator, and the sucked liquid enters the liquid recovery solution 3 through the insertion tube 4, the transparent pipeline 8, and the pipeline 10 in sequence; when the suction control valve 2 is in a closed state, the inlet 7 at the second end of the three-way valve can be inserted with a surgical instrument for operation, or liquid can be poured into it.

[0024] like Figure 3As shown, in order to facilitate the use and sealing of the inlet 7, the inlet 7 is provided with an adjustable sealing ring 17, and an adjusting screw 18 can be provided on the sealing ring 17. When the inlet 7 needs to be kept sealed, the adjusting screw 18 can be tightened to block the passage in the adjustable sealing ring 17; when a surgical instrument needs to be inserted into the inlet 7 or liquid needs to be poured into the inlet 7, the adjusting screw 18 can be loosened to keep the passage in the adjustable sealing ring 17 unblocked. The adjustable sealing ring 17 can prevent water from overflowing from the inlet or prevent the internal liquid from being sprayed out in the reverse direction.

[0025] like Figures 1-2 As shown, the front section 5 of the insertion tube 4 at the first end of the tee 1 is provided with a spiral groove, and the spiral groove can be processed on the outer wall of the front section of the insertion tube to facilitate the bending of the insertion tube and prevent the front section from wrinkling when bending, so that when the endoscope is bent, it can maintain a certain circular state and comply with the bending to reduce the load force when bending. The insertion tube is preferably a suction tube that takes both softness and hardness into consideration. A fixed connection port 6 is provided at the tail end of the insertion tube 4 at the first end of the tee 1. After the insertion tube 4 enters the channel of the endoscope, the fixed connection port 6 is used to seal the first end of the tee 1 with the channel of the endoscope. The fixed connection port can be selected through an interface that rotates about 90 degrees, and at the same time plays a sealing role.

[0026] like Figure 3 As shown, the third end 9 of the tee 1 is provided with an inverted protrusion strip 16 to prevent the transparent pipe 8 from falling off.

[0027] like Figure 1 As shown, three raised limit blocks 19 are arranged at the bottom of the suction control valve 2 to mount the suction control valve 2 on a fixed body to prevent the suction control valve 2 from falling off during operation.

[0028] like Figure 2 As shown, the liquid recovery container 3 includes a sealing cover body 11, which has a first interface 14 and a second interface 15, wherein the first interface 14 is connected to the suction control valve 2, and the second interface 15 is connected to the negative pressure suction device, and the pipeline at the first interface 14 is arranged at the bottom of the liquid recovery container 2.

[0029] like Figure 2 As shown, in order to realize the intelligent alarm function of the perfusion system of the present invention during suction, a liquid level sensor 13 and a buzzer 12 are arranged on the inner wall of the liquid recovery container 3, and the liquid sensor 13 is connected to the buzzer 12. When the perfusion system is in the suction state, the liquid level sensor 13 detects the liquid level in the liquid recovery container 3. If the preset liquid level is reached, the buzzer 12 emits a buzzing sound to prompt the user.

[0030] Therefore, the perfusion system provided by the present invention can be used in combination with an endoscope and a negative pressure aspirator as a disposable consumable product. It can be used directly after being sterilized and unpacked in advance. After being unpacked and used, it is discarded as a non-reusable product. After the insertion tube enters the human body through the pipeline of the endoscope, the liquid to be injected can be connected to the inlet of the second end of the three-way, and the injected liquid is injected into the body through the insertion tube. After a certain amount of liquid is injected, the suction control valve is pressed to open it. The liquid is sucked into the liquid recovery container by the negative pressure of the negative pressure aspirator. When the liquid in the liquid recovery container reaches a certain amount, the buzzer of the liquid level alarm is used to alarm, and the suction control valve is released to close it, cutting off the suction function of the negative pressure aspirator, that is, stopping the suction work of the negative pressure. At this time, the liquid recovery container is removed, replaced with a sterilized cover and delivered for inspection, completing the entire working procedure. The perfusion system provided by the present invention has been verified by experiments.

[0031] The perfusion system for endoscopes of the present invention forms a closed circulation system through a three-way connection, a suction control valve, and a liquid recovery solution, which minimizes the recovery of liquid through the working channel of the endoscope, and realizes the self-circulation recovery of liquid through the perfusion system; it can be made into a disposable system component, which reduces the cost; or when perfusion and recovery suction are not performed, a single three-way connection and a suction valve body form a combination component for normal suction use. Both solutions can ensure safe use, and as a disposable component, the risk of cross infection is avoided. Therefore, the perfusion system of the present invention is a good solution that is simple, functional, has no difference in operation from traditional endoscopes, improves accurate detection, and reduces cross infection.

[0032] In this specification, the present invention has been described with reference to specific embodiments thereof. However, it is apparent that various modifications and variations may be made without departing from the spirit and scope of the present invention. Therefore, the specification and drawings should be regarded as illustrative rather than restrictive.

Claims

1. A perfusion system for an endoscope, characterized in that: The invention comprises a three-way connection, a suction control valve and a liquid recovery container, wherein an insertion tube is arranged at the first end of the three-way connection, a fixed connection port is arranged at the tail end of the insertion tube at the first end of the three-way connection, after the insertion tube enters the channel of the endoscope, the first end of the three-way connection is sealedly connected with the channel of the endoscope through the fixed connection port, an entry port is arranged at the second end of the three-way connection, the entry port is used for inserting surgical instruments or injecting liquid, an adjustable sealing ring is arranged at the entry port, and the adjustable sealing ring is arranged to prevent the internal liquid from being ejected in reverse when the surgical instrument passes through the entry port or the liquid is injected, or when the perfusion system is in the suction state. The second end of the three-way connection is kept in a sealed state when in the suction state, the third end of the three-way connection is connected to one end of the suction control valve, the other end of the suction control valve is connected to the liquid recovery container, a plurality of raised limit blocks are arranged at the bottom of the suction control valve to install the suction control valve on the fixed body, the liquid recovery container is used to be connected to the negative pressure suction device, when the suction control valve is in the open state and the second end of the three-way connection is in the sealed state, the perfusion system is in the suction state; when the suction control valve is in the closed state, the inlet at the second end of the three-way connection is used to insert surgical instruments or to inject liquid.

2. The perfusion system for endoscope according to claim 1, characterized in that: The front section of the insertion tube at the first end of the tee is provided with a spiral groove to facilitate bending.

3. The perfusion system for endoscope according to claim 1, characterized in that: The third end of the three-way connection is connected to one end of the suction control valve through a transparent pipeline.

4. The perfusion system for endoscope according to claim 3, characterized in that: The third end of the tee is provided with an inverted protrusion strip to prevent the transparent pipe from falling off.

5. The perfusion system for endoscope according to claim 1, characterized in that: The liquid recovery container comprises a sealing cover body with two interfaces, one of the two interfaces is used to be connected to a suction control valve, and the other of the two interfaces is used to be connected to a negative pressure suction device.

6. The perfusion system for endoscope according to claim 1, characterized in that: A liquid level sensor and a buzzer are arranged on the inner wall of the liquid recovery container. When the liquid level sensor detects that the liquid level in the liquid recovery container reaches a preset liquid level, the buzzer emits a buzzing sound.

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