A new type of hysterosalpingography tube

Abstract

The application relates to the technical field of contrast tubes, in particular to a novel uterine oviduct contrast tube, which comprises a mounting seat, a pouring tube is detachably mounted at the front end of the mounting seat, the pouring tube is used for transporting contrast liquid, a fixed dome is arranged outside the tail end of the pouring tube, a retractable movable dome cover is arranged on the fixed dome, a sprinkler head is connected to the tail end of the pouring tube, the sprinkler head is used for spraying the contrast liquid, the outside of the sprinkler head is wrapped with a plurality of shielding petals, and a corrugated film is connected between any two adjacent shielding petals. The application realizes innovation in lubricating supply, plugging mode, liquid pouring structure and operation convenience, the comfort is ensured through continuous lubrication, the sealing performance is improved through internal and external double plugging, the stimulation feeling is reduced through liquid spraying, and the operation is simplified through memory metal and knob control, compared with a traditional air bag type scheme, the application can effectively avoid compression discomfort and fully improve the patient experience.

Description

Technical Field

[0001] This invention relates to the field of imaging tube technology, and in particular to a novel hysterosalpingography (HSG) tube. Background Technology

[0002] Hysterosalpingography (HSG) is a common diagnostic method for female infertility. The procedure involves injecting a contrast agent into the uterine cavity and fallopian tubes through a catheter, followed by X-ray fluoroscopy and imaging. The imaging of the contrast agent within the fallopian tubes and pelvic cavity is used to assess the morphology of the uterine cavity, the patency of the fallopian tubes, the location of any blockage, and whether there is fimbrial adhesion or hydrosalpinx. Compared to transvaginal ultrasound, CT, and MRI, this technique not only clearly displays the morphology of the uterine cavity and the condition of the fallopian tubes but also offers advantages such as simplicity, ease of use, and lower cost.

[0003] Current hysterosalpingography (HSG) devices mostly use a balloon at the tip of the catheter for occlusion. The principle is that the balloon inflates and adheres to the cervical wall, reducing backflow and leakage of the contrast fluid. However, during inflation, the balloon can easily compress the cervix, causing significant discomfort or even pain for the patient, and in some cases, tissue damage. Furthermore, existing devices often rely on applying disposable lubricant to the catheter surface to reduce insertion resistance, but this lubricant is easily consumed or diluted after entering the vagina, often resulting in insufficient continuous lubrication during cervical insertion, leading to difficult operation and a poor patient experience. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned shortcomings in the prior art by proposing a novel hysterosalpingography (HSG) tube.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A novel hysterosalpingography (HSG) tube includes a mounting base, an injection tube detachably mounted at the front end of the mounting base for transporting contrast fluid, and a fixed dome fitted around the outer end of the injection tube, with a retractable movable dome mounted on the fixed dome. The end of the injection tube is connected to a spray head, which is used to spray the contrast agent. The outside of the spray head is wrapped with several shielding petals, and a pleated membrane is connected between any two adjacent shielding petals. A primary control mechanism is provided between the movable dome and the mounting base to control the expansion and contraction of the movable dome; A two-stage control mechanism is provided between the shielding petal and the movable dome to control the expansion and contraction of the shielding petal and the pleated membrane.

[0006] Preferably, a fixing frame is installed on one side of the mounting base, and an inlet pipe is detachably installed on the fixing frame. One end of the inlet pipe is connected to the injection pipe, and the other end is connected to an external contrast fluid supply device.

[0007] Preferably, the fixed dome and the movable dome together form an umbrella-shaped structure that can be expanded or contracted to hold the outer end of the cervix.

[0008] Preferably, the spray head, together with the outer shielding petals and the folded membrane, forms a bud-like structure that can expand or contract to protect the injection pipe and the spray head, while blocking the inside of the cervix.

[0009] Preferably, the primary control mechanism includes a winding assembly and an adjustment assembly. The winding assembly includes a mounting cavity located inside the mounting base. A winding device is installed inside the mounting cavity. A connecting wire is wound onto the winding device. One end of the connecting wire away from the winding device enters the injection tube and, after being divided into several strands, moves through the wall of the injection tube and connects to multiple points on the inner wall of the movable dome.

[0010] Preferably, the adjustment assembly includes a control knob rotatably mounted on the outside of the mounting base, the control knob being used to control the operation of the winding device.

[0011] Preferably, a memory metal plate is installed on the inner side of the movable dome. In the initial state, the memory metal plate is in a retracted state. When working, the memory metal plate unfolds, which in turn unfolds the movable dome.

[0012] Preferably, the secondary control mechanism includes several control lines located inside and outside the movable dome. One end of the control line is connected to the lower side of the outer wall of the memory metal plate, and the other end of the control line is connected to the surface of the shielding petal after passing through the injection tube.

[0013] Preferably, there are several outlet slits on the wall of the injection pipe between the sprinkler head and the fixed dome. Each outlet slit is provided with a lower membrane pipe installed on the side wall of the injection pipe. The lower membrane pipe is connected to the inside of the outlet slit. Several seepage holes are distributed on the pipe wall at the end of the lower membrane pipe away from the outlet slit.

[0014] Preferably, the outer surface of the shielding petal is connected to a plurality of upper membrane tubes, and the lower membrane tubes and the upper membrane tubes enclose the control line therein.

[0015] Compared with the prior art, the advantages of the present invention are as follows: 1. This invention continuously releases contrast fluid with lubricating properties on the surface of the injection tube and through the drainage holes of the lower membrane tube. This not only provides good lubrication during the operation of the control line, preventing operational jamming, but also ensures continuous replenishment of lubricating fluid during insertion into the cervix and during the stay. Compared with traditional disposable surface lubrication methods, this invention can maintain a smooth effect for a long time, effectively reducing patient discomfort and pain during the operation and significantly improving the comfort of clinical use.

[0016] 2. This invention forms a seal on the outside of the cervix using a movable dome in conjunction with a fixed dome, while simultaneously sealing the inside of the cervix using a shielding flap and a folded membrane. This achieves a double-sealed structure, compared to the traditional method of sealing by inflating an airbag. This invention avoids excessive pressure on the inside of the cervix, significantly improving patient comfort. Furthermore, the double sealing also better prevents contrast fluid leakage, enhancing the reliability and accuracy of the examination and treatment process.

[0017] 3. In terms of the contrast fluid injection method, this invention uses a spray head combined with a shielding flap structure to ensure that the contrast fluid enters the uterus evenly in a spray pattern, rather than the traditional direct injection. This spray design can reduce the direct impact on the uterine wall, reduce the pain and tension caused by strong stimulation, and at the same time, during the spraying process, the contrast fluid can clean the mucus at the cervix, further improving the diagnostic and treatment effects. The overall design significantly improves patient compliance while ensuring medical efficacy.

[0018] 4. During use, the movable dome automatically unfolds and resets through the retraction and extension of the connecting wires and the temperature response of the memory metal plate. The structure is compact and easy to operate. The opening and closing of the dome and the shielding flap can be completed by rotating the control knob. No complicated operation is required, which makes it easy for doctors to perform the operation quickly. This design not only reduces the dependence on the operator, but also improves the practicality and controllability of the instrument, making clinical use more efficient and reducing the risk of misoperation.

[0019] In summary, this invention achieves innovations in lubrication supply, sealing method, injection structure, and ease of operation. Continuous lubrication ensures comfort, double sealing inside and outside improves sealing performance, spray injection reduces irritation, and the use of memory metal and knob control simplifies operation. Compared with traditional pneumatic balloon solutions, this invention can effectively avoid pressure discomfort, improve patient experience, and enhance the accuracy and safety of angiography, thus possessing strong clinical application value. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a novel hysterosalpingography (HSG) tube proposed in this invention.

[0021] Figure 2This is a schematic diagram of the mounting base and control knob structure of a novel hysterosalpingography (HSG) tube proposed in this invention.

[0022] Figure 3 This is a schematic diagram of the installation cavity and winding device of a novel hysterosalpingography (HSG) tube proposed in this invention.

[0023] Figure 4 This is a schematic diagram of the fixed dome and movable dome structure of a novel hysterosalpingography (HSG) tube proposed in this invention.

[0024] Figure 5 This is a schematic diagram of the shielding flap and folded membrane structure of a novel hysterosalpingography (HSG) tube proposed in this invention.

[0025] Figure 6 This is a schematic diagram of the lower membrane tube and seepage hole structure of a novel hysterosalpingography tube proposed in this invention.

[0026] Figure 7 This is a schematic diagram of the memory metal plate and control line structure of a novel hysterosalpingography (HSG) tube proposed in this invention.

[0027] In the diagram: 1. Mounting base, 2. Fixing frame, 3. Liquid inlet pipe, 4. Injection pipe, 5. Control knob, 6. Mounting cavity, 7. Winding device, 8. Connecting line, 9. Movable dome, 10. Fixed dome, 11. Liquid outlet slit, 12. Memory metal plate, 13. Control line, 14. Lower membrane pipe, 15. Water seepage hole, 16. Upper membrane pipe, 17. Shielding flap, 18. Pleated membrane, 19. Sprinkler head. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] Reference Figures 1 to 7A novel hysterosalpingography (HSG) tube includes a mounting base 1. An injection tube 4 is detachably mounted at the front end of the mounting base 1. A fixing frame 2 is mounted on the mounting base 1, and an inlet tube 3 is detachably mounted on the fixing frame 2. One end of the inlet tube 3 is connected to the injection tube 4, and the other end is connected to an external contrast fluid supply device. A fixed dome 10 is fixedly sleeved on the outer side of the end of the injection tube 4. A retractable movable dome 9 is movably mounted on the fixed dome 10. The fixed dome 10 and the movable dome 9 together form an umbrella-like structure. A memory metal plate 12 is installed inside the movable dome 9. In the initial state, the memory metal plate 12 is in a retracted state. During operation, the memory metal plate 12 unfolds, simultaneously causing the movable dome 9 to unfold as well. Several control lines 13 are provided inside and outside the movable dome 9. One end of the control line 13 is connected to the lower side of the outer wall of the memory metal plate 12, so that the memory metal plate 12 can pull the control line 13 to move a certain distance while expanding. The distance moved can be adjusted according to actual needs.

[0030] The end of the injection tube 4 is connected to a spray head 19. The spray head 19 has multiple spray holes for spraying contrast fluid. The outside of the spray head 19 is wrapped with several shielding petals 17, which together with the spray head 19 form a flower bud-like design. Any two adjacent shielding petals 17 are connected by a pleated membrane 18, which provides an elastic connection. Between the spray head 19 and the fixed dome 10, there are several outlet slits 11 on the wall of the injection tube 4. Each outlet slit 11 has a lower membrane tube 14 installed on the side wall of the injection tube 4. The lower membrane tube 14 is connected to the inside of the outlet slit 11, so that some of the contrast fluid inside the injection tube 4 can enter the lower membrane tube 14 through the outlet slit 11. There are several seepage holes 15 distributed on the end of the lower membrane tube 14 away from the outlet slit 11. The contrast fluid inside the lower membrane tube 14 further flows out through the seepage holes 15 and adheres to the lower membrane tube 14 and the outer surface of the injection tube 4. Since the contrast fluid itself has a certain lubricating ability, it can ensure the continuous lubrication of the surface of the injection tube 4, so that the injection tube 4 can be better inserted into the cervix.

[0031] The outer surface of the shielding flap 17 is connected to the upper membrane tube 16. The other end of the control line 13 is connected to the surface of the shielding flap 17 after passing through the injection tube 4, the lower membrane tube 14 and the upper membrane tube 16 in sequence. This allows the control line 13 to be pulled apart by the force when the movable dome 9 is unfolded, thus blocking the inside of the cervical opening inside the uterus.

[0032] The mounting base 1 has a mounting cavity 6 inside, and a winding device 7 is installed inside the mounting cavity 6. A control knob 5 is rotatably installed on the outside of the mounting base 1. The control knob 5 is used to control the operation of the winding device 7. A connecting line 8 is wound on the winding device 7. The end of the connecting line 8 away from the winding device 7 enters the injection tube 4 and is divided into several strands that move through the wall of the injection tube 4 and connect to multiple points on the inner wall of the movable dome 9. This allows the movable dome 9 to retract as a whole when the winding device 7 is winding the connecting line 8, and to unfold as a whole under the action of the memory metal plate 12 when the connecting line 8 is unwound.

[0033] When using this invention, before insertion into the cervix, the connecting wire 8 is wound around the winding device 7, and the other end is inserted into the injection tube 4 and connected to the upper movable dome 9. At this time, the connecting wire 8 is in a tightened state, and the memory metal plate 12 inside the movable dome 9 is also in a tightened state that moves towards the injection tube 4. At this time, the movable dome 9 is attached to the injection tube 4, which facilitates subsequent insertion into the cervix.

[0034] The surface of the injection tube 4 is disinfected beforehand and coated with a lubricating solution. Then, the contrast fluid with therapeutic and lubricating effects is injected into the inlet tube 3, which is fixed by the fixing frame 2. The front end of the injection tube 4 has an outlet slit 11. The contrast fluid flowing out of the outlet slit 11 will enter the lower membrane tube 14 and come into contact with the control line 13 inside the lower membrane tube 14. Excess contrast fluid will seep out from the seepage hole 15 on the surface of the lower membrane tube 14. The purpose of this design is: First: The contrast fluid with lubricating properties will come into contact with and wet the control line 13, increasing the lubrication of the control line 13 in the lower membrane tube 14, making the subsequent movement of the control line 13 smoother and preventing it from getting stuck. Second: The lubricant applied to the surface of the injection tube 4 at the beginning may rub against the vaginal wall before entering the vagina and contacting the cervix, causing the lubricant on the surface of the injection tube to be consumed. When it is necessary to insert into the cervix, the lack of lubricant may cause the patient to feel uncomfortable. Therefore, the contrast fluid that plays a lubricating role is continuously replenished through the drainage hole 15 to keep the contact area lubricated at all times. Third: After being inserted into the cervix, the injection tube 4, where the lower membrane tube 14 is located, will be clamped in the cervix for a relatively long time. The contrast fluid seeping out of the drainage hole 15 can not only have a certain therapeutic effect on the cervix and clean the mucus in the cervix, but also keep the cervix lubricated at all times, making it more comfortable to remove later.

[0035] Then, the vagina is opened using a speculum, and the inlet of the injection tube 4 is aligned with the cervix and inserted. The end of the injection tube 4 is equipped with a spray head 19, and the outside of the spray head 19 is equipped with several shielding flaps 17 connected by a pleated membrane 18. The shielding flaps 17, together with the pleated membrane 18, can effectively shield the spray head 19 and the inlet of the injection tube 4, preventing the mucus inside from blocking the spray head 19 or the holes on the surface of the injection tube 4 when it is inserted into the cervix, thus preventing contamination of the contrast fluid sprayed out later.

[0036] The fixed dome 10 and the movable dome 9 form an umbrella-shaped structure. After the front end of the injection tube 4 is inserted into the cervix, the fixed dome 10 also slightly enters the cervix to block it. At this time, rotating the control knob 5 on the mounting base 1 causes the winding device 7 in the mounting cavity 6 to start rotating, loosening the connecting line 8. Simultaneously, due to the influence of the body's internal temperature, the shape memory metal plate 12 begins to unfold. Under the combined action of the connecting line 8 and the shape memory metal plate 12, the movable dome 9 unfolds, working with the fixed dome 10 to press against the outer end of the cervix.

[0037] When the memory metal plate 12 unfolds, the control line 13 connected to the outside of the memory metal plate 12 is pulled. One end of the control line 13 is connected to the outside of the memory metal plate 12, and the other end is connected to the outside of the shielding flap 17. The entire body of the control line 13 is wrapped inside the upper membrane tube 16 and the lower membrane tube 14. When the control line 13 is pulled, the shielding flap 17 is pulled open, and the folded membrane 18 connected in the middle is also pulled open, blocking the inside of the cervical opening inside the uterus.

[0038] This application does not use any airbags for occlusion on the inner side of the cervix. Instead, it adopts a targeted design to improve lubrication and comfort, making patients more comfortable. It also chooses to occlude on both the inner and outer sides of the cervix. Occlusion at these two locations does not create a pressure sensation on the inner side of the cervix like traditionally designed airbags, and it also improves the occlusion effect to prevent leakage of contrast fluid.

[0039] After sealing, increase the flow rate of the inlet tube 3, and spray the contrast fluid into the uterus in a spraying manner using the spray nozzle 19. Compared with the traditional direct injection, this can effectively reduce irritation, improve patient comfort, and alleviate tension.

[0040] After the angiography is completed, rotate the control knob 5 to restore the movable dome 9 and the shielding flap 17 to their original positions, and then pull out the injection tube 4.

[0041] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A novel hysterosalpingography (HSG) catheter, comprising a mounting base (1), wherein an injection tube (4) is detachably mounted at the front end of the mounting base (1), the injection tube (4) being used to transport contrast fluid, characterized in that, A fixed dome (10) is fitted on the outer side of the end of the injection tube (4), and a retractable movable dome (9) is installed on the fixed dome (10). The end of the injection tube (4) is connected to a spray head (19), which is used to spray the contrast agent. The spray head (19) is wrapped with several shielding petals (17) on the outside, and a pleated membrane (18) is connected between any two adjacent shielding petals (17). A primary control mechanism is provided between the movable dome (9) and the mounting base (1) to control the expansion and contraction of the movable dome (9); A secondary control mechanism is provided between the shielding petal (17) and the movable dome (9) to control the expansion and contraction of the shielding petal (17) and the pleated membrane (18); The fixed dome (10) and the movable dome (9) together form an umbrella-shaped structure that can be expanded or contracted to hold the outer end of the cervix. The spray head (19), together with the outer shielding petals (17) and the folded membrane (18), forms a flower bud-like structure that can expand or contract to protect the injection tube (4) and the spray head (19) while blocking the inside of the cervix. The primary control mechanism includes a winding assembly and an adjustment assembly. The winding assembly includes a mounting cavity (6) located inside the mounting base (1). A winding device (7) is installed inside the mounting cavity (6). A connecting line (8) is wound on the winding device (7). One end of the connecting line (8) away from the winding device (7) enters the injection tube (4) and, after being divided into several strands, moves through the wall of the injection tube (4) and connects to multiple points on the inner wall of the movable dome (9). The adjustment assembly includes a control knob (5) that is rotated and mounted on the outside of the mounting base (1), the control knob (5) being used to control the operation of the winding device (7); The movable dome (9) has a memory metal plate (12) installed inside. In the initial state, the memory metal plate (12) is in a retracted state. When working, the memory metal plate (12) unfolds, which in turn drives the movable dome (9) to unfold as well. The secondary control mechanism includes several control lines (13) located inside and outside the movable dome (9). One end of the control line (13) is connected to the lower side of the outer wall of the memory metal plate (12), and the other end of the control line (13) is connected to the surface of the shielding petal (17) after passing through the injection tube (4). Between the sprinkler head (19) and the fixed dome (10), there are several outlet slits (11) opened on the wall of the injection pipe (4). Each outlet slit (11) is provided with a lower membrane pipe (14) installed on the side wall of the injection pipe (4). The lower membrane pipe (14) is connected to the inside of the outlet slit (11). Several seepage holes (15) are distributed on the pipe wall of the lower membrane pipe (14) away from the outlet slit (11).

2. The novel hysterosalpingography (HSG) tube according to claim 1, characterized in that, A fixing frame (2) is installed on one side of the mounting base (1). An inlet pipe (3) is detachably installed on the fixing frame (2). One end of the inlet pipe (3) is connected to the injection pipe (4), and the other end is connected to an external contrast fluid supply device.

3. The novel hysterosalpingography (HSG) tube according to claim 1, characterized in that, The outer surface of the shielding petal (17) is connected to several upper membrane tubes (16), and the lower membrane tube (14) and the upper membrane tubes (16) wrap the control line (13) within them.

Images