Repeatable injection device used in digestive endoscopy ESD (electro-static discharge) operation

Abstract

The utility model relates to a repeatable injection device used in a digestive endoscopy ESD (Electro-Static Discharge) operation, which belongs to the technical field of digestive endoscopy ESD, and comprises a mucous membrane incision knife with a water filling nozzle, a three-way valve assembly and a small needle cylinder, the three-way valve assembly is provided with an inflow port and two valve ports, the inflow port is connected with a liquid storage component, and the two valve ports are connected with the liquid storage component. The three-way valve assembly is provided with two valve ports, the other two valve ports are communicated with the mucous membrane incision knife and the small needle cylinder respectively and used for controlling extraction and injection of liquid, a cavity is formed in the liquid storage component and used for storing the liquid, and the three-way valve assembly is provided with fluid channels which are communicated with one another among the mucous membrane incision knife, the small needle cylinder and the liquid storage component. The repeatable injection device used in the digestive endoscopy ESD surgery can provide a more convenient repeatable injection function, and aims to simplify the ESD surgery process, so that a small needle cylinder can conveniently and repeatedly extract liquid from a large needle cylinder or an infusion bag, and medical staff do not need to perform repeated insertion and extraction operation.

Description

Technical Field

[0001] The utility model relates to the technical field of digestive endoscopy ESD, in particular to a repeatable injection device used in digestive endoscopy ESD surgery. Background Art

[0002] Endoscopic digestive surgery (ESD) is a minimally invasive surgical technique used to remove early-stage cancers and other lesions in the digestive tract. With the continuous development of endoscopic technology, digestive endoscopy has become one of the important means of diagnosing and treating digestive tract diseases. However, for some early-stage cancers and other lesions, traditional endoscopic resection techniques often make it difficult to completely remove the diseased tissue, which can easily lead to residual and recurrence of the lesions. Therefore, people began to explore more effective minimally invasive surgical techniques, and endoscopic digestive surgery (ESD) came into being.

[0003] The technical key to endoscopic ESD surgery is the submucosal injection of liquid to achieve mucosal lifting. During the operation, the doctor first enters the patient's digestive tract through a digestive endoscope to find the lesion site. Then, a special syringe is used to inject liquid into the submucosal layer to lift the mucosa and form a clear resection space. Next, the doctor uses an electric knife or other instruments to gradually remove the diseased tissue. Finally, endoscopic suturing technology or other methods are used to suture the mucosa at the resection site to prevent complications such as bleeding and perforation.

[0004] Endoscopic ESD surgery has the advantages of less trauma, faster recovery, and fewer complications. It has become one of the preferred surgical methods for resection of early gastrointestinal cancer and other lesions. Its scope of application is also expanding. In addition to early gastrointestinal cancer, it can also be used to treat esophageal leiomyoma, gastrointestinal stromal tumors, gastric polyps and other diseases.

[0005] Existing endoscopic digestive surgery (ESD) procedures suffer from numerous significant drawbacks and shortcomings. The most prominent issue is the small syringe capacity, which cannot meet the large number of syringes required during surgery. This requires doctors to frequently change syringes, or remove the syringe to redraw fluid and then reinsert it for injection. This not only increases the complexity and time of the procedure, but also easily leads to errors and contamination during the procedure, posing a potential threat to the patient's health.

[0006] There are two main reasons for the above shortcomings. First, due to the small capacity of the syringe, the doctor needs to frequently change the syringe during the operation, which not only increases the doctor's operating burden, but also prolongs the operation time and increases the risk and pain of the patient. On the other hand, due to the small capacity of the syringe, the doctor needs to pull out the syringe during the operation, refill it with liquid, and then insert it for injection. This will increase the risk of infection and operational errors during the operation, and may also cause problems such as liquid leakage and bubble mixing, thereby affecting the safety and effectiveness of the operation.

[0007] In summary, the existing injectable mucosal incision device technology used in digestive endoscopic ESD surgery has serious deficiencies in syringe capacity. This problem not only increases the complexity and time cost of the surgery, but may also have a negative impact on the safety and effectiveness of the surgery. Therefore, it is necessary to improve and optimize this technology to meet the actual needs of the surgery. Utility Model Content

[0008] (1) Technical problems solved

[0009] In response to the shortcomings of the existing technology, the utility model provides a repeatable injection device for use in digestive endoscopic ESD surgery, which has the advantages of repeatable injection, simplified surgical process, reduced operation time and improved surgical safety, and solves the problem of small syringe capacity of existing devices.

[0010] (2) Technical solution

[0011] To achieve the above-mentioned objectives of repeatable injection, simplifying the surgical process, reducing surgical time, and improving surgical safety, the present invention provides the following technical solutions: a repeatable injection device for use in digestive endoscopic ESD surgery, comprising a mucosal cutter with a water injection port, a three-way valve assembly, and a small syringe, the three-way valve assembly having an inlet port and two valve ports, wherein the inlet port is connected to a liquid storage component, and the other two valve ports are respectively connected to the mucosal cutter and the small syringe for controlling the extraction and injection of liquid, the liquid storage component having a cavity therein for storing liquid, and the three-way valve assembly having interconnected fluid channels between the mucosal cutter, the small syringe, and the liquid storage component for realizing the transfer of liquid between the various components;

[0012] The three-way valve assembly includes a valve body, a rotating handle, an internally threaded Luer connector and an externally threaded Luer connector; a rotating handle is rotatably installed on one side of the valve body, the outer side of an outlet on one side of the valve body is fixedly connected with an external thread, the inner side of the internally threaded Luer connector is fixedly connected with a No. 1 internal screw groove that matches the external thread on the valve body, the valve body is connected to the outlet of the valve body by a thread, the outlet on the other side of the valve body is fixedly connected to one side of the mucosal cutter, the outer side of the externally threaded Luer connector is fixedly connected with an external thread, and the inner side of the inlet on one side of the valve body is provided with a No. 2 internal screw groove that matches the external thread on the externally threaded Luer connector.

[0013] Furthermore, the male end of the externally threaded Luer connector is connected to the female end of the liquid storage component in a pluggable manner.

[0014] Furthermore, the male end of the internally threaded Luer connector is connected to the nipple of the small syringe in a pluggable manner.

[0015] Furthermore, the liquid storage component is a large syringe.

[0016] Furthermore, the nipple of the large syringe is connected to the externally threaded Luer connector in a pluggable manner.

[0017] Furthermore, the liquid storage component is a liquid storage bag.

[0018] Furthermore, the female end of the liquid storage bag is connected to the externally threaded Luer connector in a pluggable manner.

[0019] (3) Beneficial effects

[0020] Compared with the existing technology, the present invention provides a reusable injection device for use in digestive endoscopic ESD surgery, which has the following beneficial effects:

[0021] The repeatable injection device used in digestive endoscopy ESD surgery can provide a more convenient repeatable injection function through the mutual use of the three-way valve assembly, the small syringe and the liquid storage component on the mucosal incision knife, aiming to simplify the ESD surgical procedure. Through the design of the rotary valve, the small syringe can easily and repeatedly extract liquid from the large syringe or infusion bag, and medical staff no longer need to perform repeated plugging and unplugging operations, thereby saving time and improving surgical efficiency. Secondly, since there is no need to frequently pull out the small syringe, the surgical procedure is smoother and the operation can be completed more quickly. For patients, this means reduced surgical time, reduced surgical risks, and reduced discomfort and pain, and improved surgical safety. The simplified operating steps reduce the possibility of operational errors and the risk of infection and other complications, which helps to protect the health of patients and the success of the operation and improve the operational efficiency and safety of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of the first embodiment of the present utility model;

[0023] Figure 2 This is a schematic structural diagram of the second embodiment of the present utility model;

[0024] Figure 3 for Figure 1 and Figure 2 A three-dimensional schematic diagram of the connection structure of a female Luer connector.

[0025] In the figure: 1. Mucosal cutter; 200. Three-way valve assembly; 201. Valve body; 202. Rotating handle; 203. Externally threaded Luer connector; 204. Internally threaded Luer connector; 3. Small syringe; 4. Liquid storage component. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] See also Figures 1 to 3 The utility model provides a technical solution: a repeatable injection device for use in digestive endoscopic ESD surgery, comprising a mucosal cutter 1 with a water injection port, a three-way valve assembly 200 and a small syringe 3, the three-way valve assembly 200 having three ports, the three-way valve assembly 200 having an inflow port and two valve ports, wherein the inflow port is connected to a liquid storage component 4, and the other two valve ports are respectively connected to the mucosal cutter 1 and the small syringe 3 for controlling the extraction and injection of liquid, the inlet of the three-way valve assembly 200 is connected to the liquid storage component 4, the liquid storage component 4 is provided with a cavity for storing liquid, the three-way valve assembly 200 is provided with interconnected fluid channels between the mucosal cutter 1, the small syringe 3 and the liquid storage component 4, to realize the transfer of liquid between the various parts, and the flow direction and flow rate of the liquid can be controlled by operating the switch or knob of the three-way valve;

[0028] Through the mutual cooperation between the three-way valve assembly 200, the small syringe 3 and the liquid storage component 4 on the mucosal incision knife 1, a more convenient repeatable injection function can be provided, aiming to simplify the ESD surgical process. Through the design of the rotary valve, the small syringe can easily and repeatedly extract liquid from the large syringe or infusion bag, and medical staff no longer need to perform repeated plugging and unplugging operations, thereby saving time and improving surgical efficiency. Secondly, since there is no need to frequently pull out the small syringe, the surgical process is smoother and the operation can be completed more quickly. For patients, this means reduced surgical time, reduced surgical risks, and reduced discomfort and pain, and improved surgical safety. The simplified operating steps reduce the possibility of operational errors and reduce the risk of infection and other complications, which helps to protect the health of patients and the success of the operation and improve the operational efficiency and safety of the operation.

[0029] In the first embodiment, the liquid storage component 4 can use a large syringe as the main storage device for the injection liquid.

[0030] like Figure 1 、 Figure 2 and Figure 3 As shown, the three-way valve assembly 200 includes a valve body 201, a rotating handle 202, an internally threaded Luer connector 203 and an externally threaded Luer connector 204; the rotating handle 202 is rotatably installed on one side of the valve body 201, the outer side of the outlet on one side of the valve body 201 is fixedly connected with an external thread, the inner side of the internally threaded Luer connector 203 is fixedly connected with a No. 1 internal screw groove that matches the external thread on the valve body 201, the valve body 201 is connected to the outlet of the valve body 201 by a thread, and the outlet on the other side of the valve body 201 is fixedly connected to one side of the mucosal cutter 1, the outer side of the externally threaded Luer connector 204 is fixedly connected with an external thread, and the inner side of the inlet on one side of the valve body 201 is provided with a No. 2 internal screw groove that matches the external thread on the externally threaded Luer connector 204.

[0031] It should be noted that the male end of the externally threaded Luer connector 204 is connected to the female end of the liquid storage component 4 in a pluggable manner. When the male and female ends of the Luer connector are connected, the seal is completed by the cooperation between the cone at the front end of the male end and the elastic snap ring in the female end. A knurled area is added to the conical surface of the external Luer cone head, which increases the friction while ensuring a sealed connection, making the connection more secure and reliable and not easy to loosen. When it is necessary to disconnect the externally threaded Luer connector 204 from the liquid storage component 4, it is only necessary to rotate the externally threaded Luer connector 204 clockwise to pull out the externally threaded Luer connector 204, thereby realizing a pluggable function. In some cases where parts need to be replaced frequently or cleaning and maintenance are required, this pluggable connection method can be operated conveniently and quickly, thereby improving work efficiency. At the same time, after the externally threaded Luer connector 204 is connected to one side of the liquid storage component 4, it can ensure airtight sealing performance, prevent gas or liquid leakage, and ensure the stability and reliability of the system. The specifications of the externally threaded Luer connector 204 are generally international standards, and can be connected and matched with other equipment or pipelines that meet the standards, and have good versatility.

[0032] It is understandable that the male end of the internally threaded Luer connector 203 is connected to the nipple of the small syringe 3 in a pluggable manner, and the Luer cone is also used as the sealing contact surface. The air-tight or liquid-tight connection of the gas and liquid passages is achieved through the mating connection of the male and female ends. In many medical applications, Luer connectors are widely used to connect instruments such as syringes, infusion sets, and blood collection sets because they provide a reliable connector connection method that can ensure the safety and accuracy of the infusion or injection process. This connection method has good sealing performance. Through the dual sealing function of the cone seal and the O-ring, it can effectively prevent liquid leakage, facilitate quick connection and disassembly, and improve the work efficiency of medical staff.

[0033] When medical staff insert the internal thread Luer connector 203 into the nipple of the small syringe 3, they need to first rotate the adjustment ring clockwise to move the needle tip into the nipple and penetrate it, and then rotate the adjustment ring counterclockwise to move the needle tip upward. After that, the small syringe 3 and the internal thread Luer connector 203 can be plugged in and out. Since the Luer connector is a standardized connector with good interchangeability, it helps to avoid problems such as poor sealing, loose connection, and easy leakage between the small syringe 3 and the Luer connector.

[0034] In addition, the liquid storage component 4 is a large syringe.

[0035] In this embodiment, the nipple of the large syringe is connected to the externally threaded Luer connector 204 in a pluggable manner.

[0036] In the second embodiment, the liquid storage component 4 can use an infusion bag as the main storage device for the injection liquid.

[0037] It should be noted that the liquid storage component 4 is a liquid storage bag.

[0038] It is understandable that the female end of the liquid storage bag is connected to the externally threaded Luer connector 204 in a pluggable manner.

[0039] The valve body 201 is mainly composed of a three-way valve body, a valve core, a valve cap and a sealing gasket, wherein the three-way valve body is the main part of the three-way valve, the valve core is located inside the three-way valve body, and controls the smoothness and blockage of the channel by rotation, the valve cap is located above the three-way valve body, and is used to protect the valve core and the channel, and the sealing gasket is located between the three-way valve body and the valve cap to prevent leakage.

[0040] When in use, first keep the valve body 201 closed, twist the rotating handle 202 to rotate it in place and then fix it at a certain position. At this time, the valve body 201 is connected to the fluid channel through the valve core. When the valve core is rotated to different positions, the inlet can be connected to different outlets, thereby realizing the flow direction control of the fluid. The three ports on the valve core are respectively connected to the mucosal cutter 1, the small syringe 3 and the liquid storage component 4. When the valve core is rotated to a certain position, two of the three interfaces can be interconnected, and the other is closed, thereby realizing the switching of the infusion and the adjustment of the flow rate.

[0041] The working principle of the above embodiment is:

[0042] During actual use, the small syringe 3 is first connected to the liquid storage part 4 through the three-way valve assembly 200, and then, by twisting the rotating handle 202, the valve body 201 can be connected to the fluid channel through the valve core, opening the passage, thereby realizing control of the direction of liquid flow. Specifically, when the rotating handle 202 is in a specific position, the three ports on the valve core are respectively connected to the mucosal cutter 1, the small syringe 3 and the liquid storage part 4, thereby realizing the switching of the infusion and the adjustment of the flow rate, and the required liquid can be extracted from the large syringe or infusion bag. Finally, the three-way valve assembly 200 is closed, and the liquid is injected into the submucosal membrane through the water injection port of the mucosal cutter 1 to form a mucosal lift. The entire operation process does not require the small syringe 3 to be pulled out, which greatly simplifies the operation process and improves work efficiency.

[0043] Compared with the existing technology: the repeatable injection device used in digestive endoscopy ESD surgery can provide a more convenient repeatable injection function through the mutual cooperation between the three-way valve assembly 200, the small syringe 3 and the liquid storage component 4 on the mucosal incision knife 1, aiming to simplify the ESD surgical process. Through the design of the rotary valve, the small syringe can easily and repeatedly extract liquid from the large syringe or infusion bag, and medical staff no longer need to perform repeated plugging and unplugging operations, thereby saving time and improving surgical efficiency. Secondly, since there is no need to frequently pull out the small syringe, the surgical process is smoother and the operation can be completed more quickly. For patients, this means reduced surgical time, reduced surgical risks, and reduced discomfort and pain, and improved surgical safety. The simplified operating steps reduce the possibility of operational errors and the risk of infection and other complications, which helps to protect the health of patients and the success of the operation, improve the operational efficiency and safety of the operation, and solve the problem of small syringe capacity of existing devices.

[0044] The electrical components appearing in the article are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device that controls a computer, etc., and the existing disclosed power connection technology and power supply provision are also common knowledge in this field, so this application will not go into details.

[0045] It should be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not preclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0046] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A reusable injection device for use in digestive endoscopic ESD surgery, comprising a mucosal incision knife (1) with a water injection port, a three-way valve assembly (200) and a small syringe (3), characterized in that: The three-way valve assembly (200) has an inflow port and two valve ports, wherein the inflow port is connected to a liquid storage component (4), and the other two valve ports are respectively connected to the mucosal cutter (1) and the small syringe (3) for controlling the extraction and injection of liquid. The liquid storage component (4) is provided with a cavity for storing liquid. The three-way valve assembly (200) is provided with interconnected fluid channels between the mucosal cutter (1), the small syringe (3) and the liquid storage component (4) to achieve the transfer of liquid between the various parts; The three-way valve assembly (200) comprises a valve body (201), a rotating handle (202), an internally threaded Luer connector (203) and an externally threaded Luer connector (204); a rotating handle (202) is rotatably mounted on one side of the valve body (201); an external thread is fixedly connected to the outer side of an outlet on one side of the valve body (201); an internal threaded Luer connector (203) is fixedly connected to a No. 1 internal screw groove that matches the external thread on the valve body (201); the valve body (201) is connected to the outlet of the valve body (201) by threading; the outlet on the other side of the valve body (201) is fixedly connected to one side of the mucosal incision knife (1); an external thread is fixedly connected to the outer side of the externally threaded Luer connector (204); and a No. 2 internal screw groove that matches the external thread on the externally threaded Luer connector (204) is provided on the inner side of an inlet on one side of the valve body (201).

2. The reusable injection device for endoscopic ESD surgery according to claim 1, characterized in that: The male end of the externally threaded Luer connector (204) is connected to the female end of the liquid storage component (4) in a pluggable manner.

3. The reusable injection device for endoscopic ESD surgery according to claim 1, characterized in that: The male end of the internally threaded Luer connector (203) is connected to the nipple of the small syringe (3) in a pluggable manner.

4. The reusable injection device for use in digestive endoscopic ESD surgery according to claim 1, characterized in that: The liquid storage component (4) is a large syringe.

5. The reusable injection device for use in digestive endoscopic ESD surgery according to claim 4, characterized in that: The nipple of the large syringe is connected to the externally threaded Luer connector (204) in a pluggable manner.

6. The reusable injection device for use in digestive endoscopic ESD surgery according to claim 1, characterized in that: The liquid storage component (4) is a liquid storage bag.

7. The reusable injection device for use in digestive endoscopic ESD surgery according to claim 6, characterized in that: The female end of the liquid storage bag is connected to the externally threaded Luer connector (204) in a pluggable manner.

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