Hysteroscopic infusion tubing and distension infusion device for stabilizing pressure

Abstract

This invention provides a hysteroscopic infusion tubing and a distension infusion device for stabilizing pressure. The hysteroscopic infusion tubing includes: a connecting tube with an inlet at one end and a delivery port at the other end; the inlet connects to the outlet of the irrigation tubing, and the delivery port connects to a saline bag; an infusion tube with a connecting end at one end and an inlet at the other end; the connecting end connects to the saline bag, and the inlet is a Y-shaped tube, with its two ports connected to either the two inlets of the hysteroscope or one inlet and one outlet; and a tee valve located in the middle of the Y-shaped tube, used to adjust whether the two ports of the Y-shaped tube are open for both or one. The hysteroscopic infusion tubing provided by this invention can maintain the continuous and stable pressure required for uterine distension, is compatible with both domestic and imported hysteroscopes, thereby reducing material costs and making operation more convenient for clinical use.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, specifically to a hysteroscopic infusion tubing and a distending infusion device for stabilizing pressure. Background Technology

[0002] A hysteroscopy is a gynecological surgical instrument used for the direct surgical treatment of intrauterine space-occupying lesions (including intrauterine polyps, submucosal fibroids, retained placenta, etc.), endometrial biopsies, adhesiolysis, and septate uterus. Structurally, it is a fiber optic endoscope, comprising a hysteroscope body, an energy system, a light source system, an irrigation system, and an imaging system. During the procedure, the hysteroscope is first slowly inserted into the vagina. The light source is then turned on, and distending fluid is injected into the uterus through the hollow hysteroscope at a pressure of 80-100 mmHg (1 mmHg = 0.133 kPa). Once the uterine cavity is full and the field of view is clear, the endoscope can be rotated for comprehensive observation. It is primarily used for intrauterine examination and treatment. Because it can penetrate deep into the uterine cavity and has a magnifying effect on the observed area, it allows for direct and accurate assessment of the condition, making it the preferred diagnostic method for gynecological bleeding disorders and intrauterine lesions.

[0003] In hysteroscopy, uterine distension is a crucial step, and existing methods include mechanical, gas-driven, and liquid-driven distension. Liquid distension utilizes a distension device to inject pressurized distension fluid into the uterine cavity, filling it completely. This includes gravity distension, liquid distension pump distension, and manual distension. Liquid distension pump distension is further categorized into mechanically driven, gas-driven, and electrically driven (peristaltic) liquid distension pumps. Gas-driven liquid distension pumps rely on gas pressure to drive the liquid, but their pressure accuracy may be limited, and gas leaks can affect the output pressure. Furthermore, if the distension fluid is not depleted during the procedure, the gas-driven operation of the pump can actively pump air into the patient's body, increasing the risk of venous gas embolism. A connection diagram for an electrically driven (peristaltic) liquid distension pump is shown below. Figure 1As shown, the pump delivers the distending fluid to the uterus via an infusion tube and a hollow hysteroscope. In actual clinical use, the peristaltic pump rapidly provides the set distending pressure through the rotation of rollers, thus driving the fluid flow. The advantages of this pump are precise pressure and flow control, allowing for accurate adjustment of the distending fluid pressure and flow rate according to the specific needs of the surgery. It also boasts high efficiency and can operate stably for extended periods. However, the peristaltic operating mode, with its pulsating pressure, can easily cause tremors in the surgical field, potentially affecting the surgeon's intraoperative judgment; tremors can also cause discomfort to the surgeon, indirectly prolonging the operation. Furthermore, hysteroscope designs vary; domestically produced hysteroscopes generally have two irrigation tube inlets, while imported hysteroscopes have one inlet and one outlet. In most hospitals, both domestic and imported hysteroscopes are used, necessitating a new type of hysteroscopic infusion tubing that can meet the requirements of all hysteroscope designs while maintaining stable pressure.

[0004] A search revealed a patent with authorization announcement number CN211213071U, which discloses a hysteroscopic infusion tubing, comprising: a guide tube, including an inlet and a delivery port, the inlet for connecting to a distiller to introduce distiller fluid pumped by the distiller; a water inlet tube, including a connecting end and a water inlet end, the connecting end connected to the delivery port for introducing distiller fluid from the guide tube, and the water inlet end connected to the hysteroscope's water inlet to allow the distiller fluid to flow into the hysteroscope; and a combination tube, including a fixed section and a detachable section, one end of the fixed section connected to the delivery port, and the other end of the fixed section detachably connected to one end of the detachable section. This hysteroscopic infusion tubing can be freely adjusted to connect with a corresponding hysteroscope to form a distiller's access route, thus allowing a single tubing system to be compatible with both domestic and imported hysteroscopes. However, this patent still does not solve the problems mentioned above, such as the vibration of the surgical field caused by the pulsed pressure of the peristaltic pump, and requires disassembly when adapting to different hysteroscopes, which is inconvenient for clinical use. Utility Model Content

[0005] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide a hysteroscopic infusion tubing and a distending infusion device for stabilizing pressure.

[0006] This utility model is achieved through the following technical solution:

[0007] According to one aspect of the present invention, a hysteroscopic infusion tubing for stabilizing pressure is provided, comprising:

[0008] The connecting tube includes an inlet at one end of the tube body and a delivery port at the other end. The inlet is used to connect to the outlet of the irrigation pipeline, and the delivery port is used to connect to the saline bag.

[0009] An infusion tubing includes a connecting end at one end of the tubing body and an inlet end at the other end. The connecting end is used to connect to the saline bag. The inlet end is a Y-shaped tube. The two ports of the Y-shaped tube are respectively connected to the two inlets of the hysteroscope, or to one inlet and one outlet of the hysteroscope.

[0010] A tee is located in the middle of the Y-shaped pipe. The tee is used to adjust the two openings of the Y-shaped pipe to be either both open or one open.

[0011] Optionally, the inlet of the connecting pipe has a tapered joint.

[0012] Optionally, the connection end of the infusion tube has a tapered joint.

[0013] Optionally, an infusion switch regulator is provided on the infusion tube, which is used to adjust the infusion rate.

[0014] Optionally, the infusion tubing is equipped with an air filter device located between the infusion switch regulator and the saline bag, and the air filter device is used to filter out the air in the infusion tubing.

[0015] According to another aspect of the present invention, a uterine distension infusion device is provided, comprising:

[0016] A saline supply bag containing distending fluid;

[0017] A peristaltic pump, the inlet of which is connected to the saline supply bag via an irrigation pipeline, is used to deliver the distending fluid;

[0018] In the aforementioned hysteroscopic infusion tubing, the inlet of one end of the connecting tube is connected to the outlet of the peristaltic pump, and the outlet of the other end of the connecting tube is connected to the saline bag; the connecting end of the infusion tube of the hysteroscopic infusion tubing is connected to the saline bag.

[0019] The inlet end of the infusion tube is connected to the hysteroscope, and the distending fluid is delivered to the uterus sequentially through the hysteroscope infusion tube and the hysteroscope.

[0020] Optionally, the hysteroscope has two inlets, and the two ports of the Y-shaped tube at the other end of the infusion tube are respectively connected to the two inlets of the hysteroscope. The two ports of the Y-shaped tube are adjusted to be unobstructed by a three-way valve in the middle of the Y-shaped tube.

[0021] Optionally, the hysteroscope has an inlet and an outlet, and the two ports of the Y-shaped tube at the other end of the infusion tube are respectively connected to an inlet and an outlet of the hysteroscope. The port connecting the Y-shaped tube to the outlet of the hysteroscope is closed by a T-junction in the middle of the Y-shaped tube.

[0022] Optionally, the inlet end of the irrigation pipeline is a Y-shaped pipeline, and the two inlets of the Y-shaped pipeline are respectively connected to the saline supply bag.

[0023] Optionally, the saline supply bag has a capacity of 1000ml, and the saline bag itself has a capacity of 500ml.

[0024] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0025] The hysteroscopic infusion tubing provided by this invention allows the guide port of the connecting tube and the connection end of the infusion tube to be inserted into normal saline, buffering pressure fluctuations caused by the peristaltic pump and maintaining the continuous and stable pressure required for uterine distension. Furthermore, depending on the type of hysteroscope used, the tubing can be freely adjusted to single or double access via the T-connector in the middle of the Y-shaped tube, facilitating connection with the corresponding hysteroscope to form a distension pathway. Thus, one set of tubing can be used for both domestic and imported hysteroscopes. This hysteroscopic infusion tubing is assembleable and multifunctional. Only one set of tubing needs to be prepared for hysteroscopic surgery, eliminating the need for additional infusion tubing for domestic or imported hysteroscopes, reducing surgical material costs, and making operation more convenient for clinical use. Attached Figure Description

[0026] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0027] Figure 1 This is a connection diagram of a uterine distension infusion device in the prior art;

[0028] Figure 2 This is a schematic diagram of the connection of the uterine distension infusion device in one embodiment of the present invention;

[0029] Figure 3 This is a partial structural schematic diagram of the infusion tube in one embodiment of the present invention;

[0030] In the diagram: 1 is the inlet of the irrigation line, 2 is the peristaltic pump, 3 is the outlet of the irrigation line, 4 is the connecting pipe, 5 is the infusion line, 6 is the hysteroscope, 7 is the saline bag, 8 is the infusion switch regulator, and 9 is the air filter. Detailed Implementation

[0031] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0032] It should be noted that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Furthermore, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the present invention described herein can be implemented in a sequence other than that illustrated or described herein.

[0033] Furthermore, in the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] Reference Figure 2As shown, an embodiment of this utility model provides a hysteroscopic infusion tubing for stabilizing pressure, including a connecting tube 4, an infusion tube 5, and a tee (not shown in the figure). The connecting tube 4 includes an inlet at one end and a delivery port at the other end. The inlet is connected to the outlet 3 of the irrigation tubing to introduce distending fluid pumped by the distending device (peristaltic pump 2). The delivery port is connected to a saline bag 7. The infusion tube 5 includes a connecting end at one end and an inlet at the other end. The connecting end is used for… The system connects to a saline bag 7, which buffers pressure fluctuations caused by the peristaltic pump 2, stabilizing the pressure. The inlet is connected to the inlet of the hysteroscope 6, allowing the distending fluid to flow into the hysteroscope 6. The inlet is a Y-shaped tube, with its two ports connected to either the two inlets of the hysteroscope 6 or one inlet and one outlet. A tee is located in the middle of the Y-shaped tube, between its three branches, to adjust whether the two ports are open for both or one flow. Specifically, the two ports are the first and second ports. When the hysteroscope 6 is a domestically produced hysteroscope (with two inlets), the tee is fully opened, allowing fluid to flow through both ports, achieving a double-flow. If the hysteroscope 6 is an imported hysteroscope (with one inlet and one outlet), the tee is closed, shutting off the outlet, achieving a single-flow, fluid distending operation.

[0035] In some embodiments, the inlet of the connecting tube 4 has a conical connector to facilitate insertion into the saline bag 7 used for pressure stabilization. This allows the inlet of the connecting tube 4 to be tightly inserted and fixed at the opening of the saline bag 7, preventing liquid leakage and ensuring the stability and safety of the infusion process. Thus, the distending fluid and pressure delivered by the peristaltic pump 2 can be introduced into the saline solution in the saline bag 7, thereby stabilizing the distending pressure.

[0036] In some embodiments, the connection end of the infusion tube 5 has a conical connector, similar to the structure of the infusion port, to facilitate the insertion of the saline bag 7 for stabilizing pressure.

[0037] It should be noted that in other implementations, the guide port and the connecting end can also adopt other connector structures, as long as they can achieve the same function as described above.

[0038] Reference Figure 3 In some embodiments, an infusion switch regulator 8 is provided on the infusion tube 5. The infusion switch regulator 8 is used to adjust the infusion rate. For example, the infusion rate and flow rate can be adjusted by rotating a roller or a button, thereby facilitating the surgeon to control the infusion rate during the uterine distension procedure.

[0039] In some embodiments, an air filter 9 is provided on the infusion tubing 5. The air filter 9 is located between the infusion switch regulator 8 and the saline bag 7, and is used to filter out air from the infusion tubing 5. Specifically, the air filter 9 uses a filter medium (such as a filter membrane, filter material, etc.) to block and filter air in the distending fluid.

[0040] In this embodiment of the invention, by setting an air filter device 9, when the depletion of the distending fluid is not detected in time during the operation and air enters the hysteroscopic infusion line, the distending fluid passes through the air filter device 9, and the air in it is blocked by the filter medium, which can filter out the air in time, prevent and reduce the risk of venous gas embolism, thereby effectively reducing the risk of air embolism in the liquid distending method.

[0041] Another embodiment of this utility model provides a uterine distension infusion device, which continues to be referred to... Figure 2 The device includes the hysteroscopic infusion tubing described in the above embodiment, as well as a saline supply bag, a peristaltic pump 2, and a hysteroscope 6. The saline supply bag contains distending fluid. The inlet 1 of the irrigation tubing is connected to the saline supply bag, and the inlet of the peristaltic pump 2 is connected to the saline supply bag through the irrigation tubing. The peristaltic pump 2 is used to deliver distending fluid. The inlet of one end of the connecting tube 4 of the hysteroscopic infusion tubing is connected to the outlet of the peristaltic pump 2, and the guide port of the other end of the connecting tube 4 is connected to the saline bag 7. The connecting end of one end of the infusion tube 5 of the hysteroscopic infusion tubing is connected to the saline bag 7. The inlet of the other end of the infusion tube 5 is connected to the hysteroscope 6. The distending fluid is delivered to the uterus sequentially through the hysteroscopic infusion tubing and the hysteroscope 6.

[0042] In some alternative embodiments, the hysteroscope 6 has two inlets, and the two ports of the Y-shaped tube at the other end of the infusion tube 5 are respectively connected to the two inlets of the hysteroscope 6. The two ports of the Y-shaped tube are adjusted to be unobstructed by the three-way valve in the middle of the Y-shaped tube.

[0043] In some alternative embodiments, the hysteroscope 6 has an inlet and an outlet, and the two ports of the Y-shaped tube at the other end of the infusion tube 5 are respectively connected to an inlet and an outlet of the hysteroscope 6. The port connecting the Y-shaped tube to the outlet of the hysteroscope 6 is closed by a tee in the middle of the Y-shaped tube.

[0044] In some embodiments, the inlet 1 of the irrigation pipeline is a Y-shaped pipeline, and the two inlets of the Y-shaped pipeline are respectively connected to the saline supply bag.

[0045] In some implementations, the capacity of the saline supply bag is 1000 ml, and the capacity of the saline bag 7 is 500 ml, depending on the actual needs of the uterine distension procedure.

[0046] In the above embodiments of this utility model, the irrigation tubing is conventionally installed on the peristaltic pump 2; the Y-shaped tubing at the inlet end of the irrigation tubing is connected to two 1000ml saline supply bags respectively; using the above-mentioned hysteroscopic infusion tubing, the outlet of the other end of the irrigation tubing is connected to the connecting tube 4 of the disposable uterine infusion tubing and inserted into the 500ml saline bag 7; one end of the infusion tube 5 in the disposable uterine infusion tubing is connected to the 500ml saline bag 7 and the other end is connected to the hysteroscope 6. Without changing the currently used liquid peristaltic pump, the purpose of stabilizing the distension pressure is achieved by changing the connection method of the distension device.

[0047] In the above embodiments of this invention, the inlet of the connecting tube 4 and the connection end of the infusion tube 5 are inserted into physiological saline to buffer pressure fluctuations caused by the peristaltic pump 2, thus maintaining continuous and stable distension pressure. The air filter 9 effectively filters out air, preventing the risk of air embolism. Depending on the type of hysteroscope used, the infusion tubing can be freely adjusted via a three-way valve without disassembling the tubing to facilitate connection with the corresponding hysteroscope 6 to form a distension pathway. Therefore, one set of tubing can be used to accommodate both domestic and imported hysteroscopes. Due to the assembleability and multifunctionality of the hysteroscopic infusion tubing, only one set of tubing needs to be prepared for hysteroscopic surgery, eliminating the need for additional infusion tubing for either domestic or imported hysteroscopes. This makes operation more convenient, facilitates clinical use, and saves on surgical material costs.

[0048] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various modifications or variations within the scope of the claims, which do not affect the substantive content of this utility model.

Claims

1. A hysteroscopic infusion line for stabilizing pressure, characterized in that include: The connecting tube includes an inlet at one end of the tube body and a delivery port at the other end. The inlet is used to connect to the outlet of the irrigation pipeline, and the delivery port is used to connect to the saline bag. The infusion tubing includes a connecting end at one end of the tubing body and an inlet end at the other end. The connecting end is used to connect to the saline bag. The inlet end is a Y-shaped tube, and the two ports of the Y-shaped tube are respectively connected to the two inlets of the hysteroscope, or to one inlet and one outlet of the hysteroscope. The saline bag is used to buffer the pressure fluctuations caused by the peristaltic pump and plays a role in stabilizing the pressure. A tee is located in the middle of the Y-shaped pipe. The tee is used to adjust the two openings of the Y-shaped pipe to be either both open or one open.

2. The hysteroscopy infusion line for stable pressure according to claim 1, characterized in that, The inlet of the connecting pipe has a tapered joint.

3. The hysteroscopy infusion line for stable pressure according to claim 1, characterized in that, The infusion tube has a tapered connector at its connection end.

4. The hysteroscopic infusion tubing for stabilizing pressure according to claim 1, characterized in that, An infusion switch regulator is provided on the infusion tube, which is used to adjust the infusion rate.

5. The hysteroscopy infusion line for stable pressure according to claim 4, characterized in that, An air filter is provided on the infusion tubing, which is located between the infusion switch regulator and the saline bag. The air filter is used to filter out the air in the infusion tubing.

6. An inflator device for a medical balloon, comprising: include: A saline supply bag containing distending fluid; A peristaltic pump, the inlet of which is connected to the saline supply bag via an irrigation pipeline, is used to deliver the distending fluid; The hysteroscopic infusion tubing according to any one of claims 1-5, wherein the inlet of one end of the connecting tube of the hysteroscopic infusion tubing is connected to the outlet of the peristaltic pump, and the delivery port of the other end of the connecting tube is connected to the saline bag; the connecting end of one end of the infusion tube of the hysteroscopic infusion tubing is connected to the saline bag. The inlet end of the infusion tube is connected to the hysteroscope, and the distending fluid is delivered to the uterus sequentially through the hysteroscope infusion tube and the hysteroscope.

7. The inflating uterine fluid infusion device of claim 6, wherein, The hysteroscope has two inlets, and the two ports of the Y-shaped tube at the other end of the infusion tube are connected to the two inlets of the hysteroscope respectively. The two ports of the Y-shaped tube are adjusted to be unobstructed by the three-way valve in the middle of the Y-shaped tube.

8. The inflating uterine fluid infusion device of claim 6, wherein, The hysteroscope has an inlet and an outlet. The two ports of the Y-shaped tube at the other end of the infusion tube are connected to the inlet and outlet of the hysteroscope, respectively. The port connecting the Y-shaped tube to the outlet of the hysteroscope is closed by a T-junction in the middle of the Y-shaped tube.

9. The inflating uterine fluid infusion device of claim 6, wherein, The inlet of the irrigation pipeline is a Y-shaped pipeline, and the two inlets of the Y-shaped pipeline are respectively connected to the saline supply bag.

10. The inflating uterine fluid infusion device of claim 6, wherein, The saline supply bag has a capacity of 1000ml, and the saline bag itself has a capacity of 500ml.

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