A balloon uterine stent with guide wire

Abstract

This invention provides a balloon-supported uterine stent with a guide wire, belonging to the field of medical technology. It mainly includes a catheter and a first balloon; the first end of the catheter is a closed end with multiple holes around it, and the second end is an open end. The first balloon is ring-mounted on the catheter, which contains a first lumen and a second lumen. The first lumen is closed within the catheter, and a first branch tube is located on the side of the catheter, communicating with the first lumen. A first air hole is located on the side wall of the catheter, connecting the first lumen and the first balloon. A connector is installed at the open end of the catheter, with a base threaded onto the connector. A guide wire is vertically connected to the base, passing through the second lumen of the catheter and abutting against the closed end of the catheter. A connecting tube is threaded onto the connector, and a second valve is installed on the connecting tube. The base and connecting tube are not simultaneously mounted on the catheter. This invention is convenient for insertion into the patient's uterus.

Description

Technical Field

[0001] This utility model relates to the field of medical technology, and in particular to a balloon uterine stent with a guide wire. Background Technology

[0002] Intrauterine adhesions are a common gynecological condition that seriously affects women's reproductive physiology and physical and mental health. The recurrence rate after hysteroscopic adhesiolysis is as high as 62.5%. To prevent or reduce recurrence after adhesiolysis, a balloon uterine stent is usually placed in the uterus. Balloon uterine stents are mainly used after intrauterine surgery to dilate the uterine cavity, prevent intrauterine adhesions, and also have a hemostatic effect by compressing bleeding sites within the uterus.

[0003] However, because existing balloon uterine stents are made of flexible silicone, they lack sufficient support, making the placement process quite complex. First, the vagina and cervix need to be dilated using a vaginal speculum, which can be very uncomfortable for the mother. Then, the product is slowly inserted into the uterus by holding the tip with forceps. During this process, it's easy to puncture the balloon at the tip of the cervical dilation balloon catheter, resulting in the inability to fill the product with saline solution or leakage after filling, thus affecting the product's function.

[0004] Therefore, a balloon uterine stent with a guide wire is needed to facilitate its placement inside the patient's uterus. Utility Model Content

[0005] To address the aforementioned problems, the purpose of this invention is to provide a balloon uterine stent with a guide wire, which is convenient for insertion into the patient's uterus.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A balloon-supported uterine stent with a guide wire mainly includes a catheter and a first balloon. The first end of the catheter is a closed end, and multiple holes are arranged around its outer surface. The second end of the catheter is an open end. The first balloon is ring-shaped on the catheter and is located near the closed end. The catheter has a first lumen and a second lumen along its length. The first lumen is closed within the catheter. A first branch tube is located on the side of the catheter, near the open end. The first end of the first branch tube communicates with the first lumen. A first air hole is provided on the side wall of the conduit, which connects the first lumen and the first airbag. A first valve is installed on the second end of the first branch pipe. A connector is installed on the open end of the conduit, and a base is threaded onto the connector. A guide wire is vertically connected to the base, and the axis of the guide wire coincides with the axis of the base. The guide wire passes through the second lumen of the conduit and abuts against the closed end of the conduit. A connecting pipe is threaded onto the connector, and a second valve is installed on the connecting pipe. The base and the connecting pipe are not installed on the conduit at the same time.

[0008] Furthermore, a second airbag is provided on the upper ring of the catheter, the second airbag is close to the first airbag, and the second airbag is located on one side of the open end of the catheter; a closed third lumen is provided inside the catheter, a second branch is provided on the outer side of the catheter, the second branch is close to the open end of the catheter, the second branch is connected to the third lumen, and a second air hole is provided on the side wall of the catheter, the second air hole connects the third lumen and the second airbag.

[0009] Furthermore, the second airbag has a flat structure.

[0010] Furthermore, the second branch pipe is a flexible hose.

[0011] Furthermore, the first branch pipe is a flexible hose.

[0012] Furthermore, a pressure measuring structure is installed on the first branch pipe. The pressure measuring structure mainly includes a fixed pipe, which is vertically installed on the side wall of the first branch pipe. The fixed pipe is connected to the first pipe cavity. A marker is slidably connected inside the fixed pipe. A piston is provided at the lower end of the marker. The piston is slidably connected inside the fixed pipe. An annular stop is provided on the inner side of the pipe opening of the fixed pipe. The marker extends out of the fixed pipe. The diameter of the piston is larger than the inner diameter of the stop.

[0013] Furthermore, a pressure measuring structure is installed on the second branch pipe.

[0014] Furthermore, a flow meter is installed on the connecting pipe.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] This invention features a detachable base mounted on the connector at the open end of the catheter. A guide wire, installed on the base, is inserted into the second lumen of the catheter. The guide wire supports the catheter, facilitating its insertion from the vagina into the uterus. The base and guide wire can then be removed from the catheter, preventing the rigid guide wire from remaining inside the patient and reducing discomfort. After removing the base, a connecting tube is installed at the open end of the catheter. A second valve on the connecting tube closes the second lumen of the catheter, preventing blood from flowing out of the uterus.

[0017] This invention features a first balloon on a catheter that supports the uterus. A second balloon on the catheter expands and is fixed to the cervix. The second balloon supports and limits the first balloon, making it less likely to move or deviate. This allows the first balloon to support the uterus while also applying pressure to stop bleeding.

[0018] This invention features a pressure measuring structure on the first and second branch tubes, which allows for the measurement of the pressure of the first and second airbags, facilitating the control of the support force of the first and second airbags on the uterus. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure provided in the embodiment of this utility model.

[0020] Figure 2 This is a top view of the overall structure provided in the embodiment of this utility model.

[0021] Figure 3 This is a schematic diagram showing the base and conduit disassembled according to an embodiment of the present invention.

[0022] Figure 4 This is a schematic diagram of the connection between the connecting tube and the conduit provided in an embodiment of this utility model.

[0023] Figure 5 yes Figure 4 A cross-sectional view of the corresponding connecting pipe.

[0024] Among them, 1 is the first airbag, 2 is the second airbag, 3 is the conduit, 4 is the second branch tube, 5 is the marker, 6 is the fixing tube, 7 is the third valve, 8 is the base, 9 is the connector, 10 is the first valve, 11 is the first branch tube, 12 is the tube hole, 13 is the guide wire, 14 is the connecting tube, 15 is the second valve, 16 is the first cavity, 17 is the air hole, 18 is the third cavity, and 19 is the second cavity. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The accompanying drawings are for illustrative purposes only and represent schematic diagrams, not actual pictures. They should not be construed as limiting the present patent. In order to better illustrate the specific implementation of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product size. It is understandable for those skilled in the art that some well-known structures, components, and their descriptions may be omitted in the drawings. The terms "upper," "lower," "left," and "right" are used to illustrate the invention and do not represent the actual product's location. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0026] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0027] A specific embodiment, as shown in the figure, represents a preferred embodiment of this utility model. A balloon-supported uterine stent with a guide wire 13 mainly includes a catheter 3 and a first balloon 1. The first end of the catheter 3 is a closed end, and multiple tube holes 12 are arranged around the outer surface of the first end of the catheter 3. The second end of the catheter 3 is an open end. The first balloon 1 is arranged around the catheter 3, close to the closed end of the catheter 3. A first lumen 16 and a second lumen 19 are provided along the length of the catheter 3. The first lumen 16 is closed within the catheter 3. A first branch tube 11 is provided on the side of the catheter 3, close to the open end of the catheter 3. The first end of the first branch tube 11 communicates with the first lumen 16. The side wall of the catheter 3... A first air hole 17 is provided, which connects the first lumen 16 and the first airbag 1. A first valve 10 is installed on the second end of the first branch pipe 11. A connector 9 is installed on the open end of the conduit 3. A base 8 is threadedly connected to the connector 9. A guide wire 13 is vertically connected to the base 8. The axis of the guide wire 13 coincides with the axis of the base 8. The guide wire 13 passes through the second lumen 19 of the conduit 3 and abuts against the closed end of the conduit 3. A connecting pipe 14 is threadedly connected to the connector 9. A second valve 15 is installed on the connecting pipe 14. The base 8 and the connecting pipe 14 are not installed on the conduit 3 at the same time.

[0028] Because the balloon uterine stent is a single-use product, it is placed in a sterile packaging bag before use. For convenient immediate use, the base 8 and guide wire 13 on the base 8 are pre-installed at the open end of the catheter 3 at the time of manufacture, and the connecting tube 14 is also placed in the sterile packaging bag. When needed, the catheter 3 with the guide wire 13 can be removed by opening the sterile packaging bag. The rigid guide wire 13 provides support for the catheter 3, allowing medical staff to easily insert the flexible catheter 3 from the vagina into the patient's uterus. Furthermore, to facilitate knowing the insertion depth of the catheter 3, depth markings are provided on the outer surface of the catheter 3. After the closed end of the catheter 3 is inserted into the patient's uterus, the base 8 is rotated to disengage the base 8 from the connector 9 on the catheter 3. The guide wire 13 is then removed from the catheter 3 through the base 8, preventing it from remaining inside the catheter 3 and reducing discomfort caused by the rigid guide wire 13. After catheter 3 is inserted into the uterus, blood from the uterus flows from the orifice 12 into the second lumen 19 of catheter 3 and out of catheter 3. To prevent blood from flowing out of catheter 3 unnecessarily, connecting tube 14 can be removed from the sterile packaging bag and installed on connector 9 of catheter 3. When it is necessary to drain blood from the uterus, the second valve 15 on connector 9 is opened to drain the blood. To better understand the patient's condition, blood loss needs to be monitored. Therefore, a flow meter is installed on connecting tube 14. After the second valve 15 is opened, the flow meter is used to record the amount of blood flowing through it, allowing the patient's condition to be assessed before proceeding with the next treatment step. After catheter 3 is inserted into the patient's uterus, the first balloon 1 is inflated or filled with water through the first branch tube 11. Then, the first valve 10 is used to close the first branch tube 11, causing the first balloon 1 to inflate. The inflated balloon 1 supports the uterus and prevents re-adhesion.

[0029] Because when the first balloon 1 inflates and supports the uterus, it may slide and shift within the uterus, preventing it from effectively compressing and stopping the bleeding. Therefore, a second balloon 2 is further provided around the catheter 3, close to the first balloon 1, located on one side of the open end of the catheter 3. A closed third lumen 18 is provided inside the catheter 3, and a second branch tube 4 is provided on the outside of the catheter 3, close to the open end of the catheter 3. A third valve 7 is installed on the second branch tube 4. The second branch tube 4 communicates with the third lumen 18, and a second air hole 17 is provided on the side wall of the catheter 3, connecting the third lumen 18 and the second balloon 2. When the catheter 3 is inserted into the uterus, the second balloon 2 is inflated by air or water through the second branch tube 4. Simultaneously, the first branch tube 11 is used to inflate or inject water into the first balloon 1, causing it to expand. The expanded first balloon 1 supports the uterus, while the expanded second balloon 2 blocks the cervix. The second balloon 2 supports and confines the first balloon 1 within the uterus, allowing for better pressure and hemostasis at the bleeding site, and preventing the first balloon 1 from shifting within the uterus. Furthermore, under the pressure of the first balloon 1, the edges of the second balloon 2 adhere more closely to the uterine wall, further blocking the cervix and preventing blood from flowing out of the uterus through the gap between the catheter 3 and the cervix. Moreover, the second balloon 2 has a flat structure, allowing it to lie flat on the cervix, thus reducing pressure on the cervix.

[0030] Furthermore, the second branch tube 4 is a flexible tube, and the first branch tube 11 is a flexible tube, so that the first branch tube 11 and the second branch tube 4 can be bent and placed without easily hitting the patient.

[0031] Inflating or filling the first balloon 1 with water causes it to expand. However, when the first balloon 1 expands inside the uterus, it is compressed by the uterus and deforms, increasing the air pressure inside the first balloon 1. Different patients have different uterine contraction forces, resulting in different compression forces on the first balloon 1 and thus different air pressures inside it. Therefore, a pressure measuring structure is further installed on the first branch tube 11. The pressure measuring structure mainly includes a fixed tube 6, which is vertically installed on the side wall of the first branch tube 11 and communicates with the first lumen 16. A pointer 5 is slidably connected inside the fixed tube 6, and a piston is provided at the lower end of the pointer 5. The piston is slidably connected inside the fixed tube 6, and an annular stop is provided on the inner side of the opening of the fixed tube 6. The pointer 5 extends outside the fixed tube 6, and the diameter of the piston is larger than the inner diameter of the stop. The piston slides inside the fixed tube 6, and under the restriction of the stop, the piston will not detach from the fixed tube 6. When the first balloon 1 is inflated or filled with water, the pressure in the first lumen 16, which is connected to the first balloon 1, is the same as that in the first balloon 1. Therefore, the pressure measuring structure installed in the first lumen 16 can simultaneously measure the pressure of the first balloon 1. As the first balloon 1 is continuously inflated or filled with water, the pressure increases, and the pressure also increases due to the squeezing force from the uterus. This causes the piston inside the fixed tube 6 to move outward, causing the gauge 5 installed on the piston to extend out of the fixed tube 6. The gauge 5 indicates the increase in pressure inside the first balloon 1, thereby adjusting the amount of air or water injected into the first balloon 1. This allows the degree of inflation of the first balloon 1 to be suitable for different patients. Furthermore, a pressure measuring structure is installed on the second branch tube 4 to facilitate adjustment of the degree of inflation of the second balloon 2, making it convenient to use.

[0032] The above description is a detailed description of the preferred embodiments of the present utility model. However, the embodiments are not intended to limit the scope of the patent application of the present utility model. All equivalent changes or modifications made under the technical spirit of the present utility model should fall within the patent scope covered by the present utility model.

Claims

1. A balloon uterine stent with a guide wire, characterized in that: The device mainly includes a conduit and a first airbag. The first end of the conduit is a closed end, and multiple holes are arranged around its outer surface. The second end of the conduit is an open end. The first airbag is ring-shaped on the conduit and is located near the closed end. The conduit has a first lumen and a second lumen along its length. The first lumen is closed within the conduit. A first branch tube is located on the side of the conduit, near the open end. The first end of the first branch tube communicates with the first lumen. A first air hole is formed on the side wall of the conduit, connecting the first lumen and the first airbag. A first valve is installed at the second end of the first branch tube. A connector is installed at the open end of the conduit, with a base threaded onto the connector. A guide wire is vertically connected to the base, with its axis coinciding with the axis of the base. The guide wire passes through the second lumen of the conduit and abuts against the closed end of the conduit. A connecting tube is threaded onto the connector, and a second valve is installed on the connecting tube. The base and the connecting tube are not simultaneously installed on the conduit.

2. The balloon uterine stent with guide wire as described in claim 1, characterized in that: The catheter is provided with a second airbag, which is close to the first airbag and is located on one side of the open end of the catheter. The catheter is provided with a closed third lumen. The catheter is provided with a second branch tube on the outside of the catheter, which is close to the open end of the catheter and communicates with the third lumen. The catheter is provided with a second air hole on its side wall, which connects the third lumen and the second airbag.

3. A balloon uterine stent with guide wire as described in claim 2, characterized in that: The second airbag has a flat structure.

4. A balloon uterine stent with guide wire as described in claim 2, characterized in that: The second branch pipe is a flexible hose.

5. A balloon uterine stent with guide wire as described in claim 1, characterized in that: The first branch pipe is a flexible hose.

6. A balloon uterine stent with guide wire as described in claim 2, characterized in that: A pressure measuring structure is installed on the first branch pipe. The pressure measuring structure mainly includes a fixed pipe, which is vertically installed on the side wall of the first branch pipe and communicates with the first pipe cavity. A pointer is slidably connected inside the fixed pipe, and a piston is provided at the lower end of the pointer. The piston is slidably connected inside the fixed pipe. An annular stop is provided on the inner side of the pipe opening of the fixed pipe. The pointer extends out of the fixed pipe, and the diameter of the piston is larger than the inner diameter of the stop.

7. A balloon uterine stent with guide wire as described in claim 6, characterized in that: A pressure measuring structure is installed on the second branch pipe.

8. A balloon uterine stent with guide wire as described in claim 1, characterized in that: A flow meter is installed on the connecting pipe.

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