Uterine salpingography catheter

Abstract

The utility model relates to a hysterosalpingography catheter, and belongs to the technical field of medical devices. The hysterosalpingography catheter comprises a liquid passing tube, a balloon, a flow guide tube and an expansion ring, the liquid passing tube is hollow, one end of the liquid passing tube is a closed end, the other end of the liquid passing tube is provided with a liquid inlet, an opening is formed in the side wall, close to the closed end, of the liquid passing tube, the balloon is arranged on the liquid passing tube, and the balloon is arranged on the flow guide tube. The balloon is connected with the flow guide tube, and the expansion ring is arranged on the liquid passing tube and the flow guide tube in a sleeving mode. A double-tube structure is formed by the liquid passing tube and the flow guide tube, so that water can be conveniently injected into the balloon, and contrast agents can be conveniently injected into the uterus and the cervix uteri; an opening formed in the side wall of the liquid passing tube is not prone to being blocked by cervix mucus or tissues in the tube arranging process; the expansion ring can be in contact with cervix mucus to expand after the hysterosalpingography catheter enters the uterine cavity, friction force is increased, and the catheter can be prevented from being disengaged out of the cervix in the balloon water injection process.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a hysterosalpingography catheter. Background Art

[0002] Hysterosalpingography is an operation to evaluate the patency of the uterine cavity and fallopian tubes. The traditional examination method first requires inserting a contrast catheter, passing the catheter through the cervical opening into the uterine cavity, injecting 1.0-1.5mL of sterile water to inflate the balloon, thereby fixing the catheter in the proper position, injecting contrast agent into the uterine cavity and fallopian tubes through the catheter, and observing the flow of contrast agent under ultrasound or X-ray to display the morphology of the uterine cavity and fallopian tube lumen and the diffusion of contrast agent in the abdominal cavity.

[0003] However, the existing angiography catheter structure is not reasonably designed. In actual clinical operations, the entrance of the contrast agent is easily blocked when the angiography catheter is inserted into the uterine cavity. After the angiography catheter is inserted into the uterine cavity, the balloon is filled with water to expand it, and the angiography catheter is easily dislocated as a whole to the outside of the uterine cavity during the balloon expansion process, which is inconvenient to operate. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the prior art and provide a hysterosalpingography catheter which has a reasonable structural design and is easy to operate.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A hysterosalpingography catheter comprises a liquid passage tube, a balloon, an expansion ring and a drainage tube. The interior of the liquid passage tube is hollow, one end of the liquid passage tube is a closed end, the other end of the liquid passage tube has a liquid inlet, the liquid passage tube is provided with an opening on a side wall close to the closed end, the balloon is arranged on the liquid passage tube, the opening is located between the closed end and the balloon, the balloon is connected to the drainage tube, and the expansion ring is sleeved on the liquid passage tube and the drainage tube.

[0007] The utility model forms a double-tube structure by arranging a liquid passage tube and a diversion tube, which is convenient for injecting water into the balloon and for injecting contrast agent into the uterus and the cervix. The opening arranged on the side wall of the liquid passage tube is not easily blocked by cervical mucus or tissue during the catheter placement process. The expansion ring sleeved on the liquid passage tube and the diversion tube can gradually expand by contacting cervical mucus after the hysterosalpingography catheter enters the uterine cavity, thereby increasing friction and preventing the catheter from slipping out of the cervix during the balloon water injection process. In the utility model, the balloon expands due to water injection and the expansion ring expands due to liquid absorption, thereby doubly sealing the cervix and preventing the contrast agent from being exposed.

[0008] As a preferred embodiment of the utility model, the hysterosalpingography catheter further comprises a handle, and the handle is sleeved on the liquid passage tube and the diversion tube.

[0009] As a preferred embodiment of the present utility model, the outer wall of the liquid passage tube is integrally formed and connected with the outer wall of the flow guide tube.

[0010] As a preferred embodiment of the present utility model, the liquid inlet of the liquid passage pipe is connected with a hose.

[0011] As a preferred embodiment of the present utility model, the liquid passage tube and the flow guide tube are both made of plastic.

[0012] As a preferred embodiment of the present utility model, the closed end of the liquid passage tube is hemispherical.

[0013] As a preferred embodiment of the present utility model, the expansion ring is made of medical sponge material.

[0014] As a preferred embodiment of the present utility model, the number of the openings is not less than two, and the openings are distributed at equal intervals along the circumference of the liquid passage.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The hysterosalpingography catheter provided by the utility model has a reasonable structural design and is easy to operate; the double-tube structure composed of a liquid-passing tube and a diversion tube is convenient for injecting water into the balloon and injecting contrast agent into the uterus and the cervix; the opening arranged on the side wall of the liquid-passing tube is not easily blocked by cervical mucus or tissue during the catheter placement process; the expansion ring arranged by the utility model can contact the cervical mucus to expand after the hysterosalpingography catheter enters the uterine cavity, thereby increasing friction and preventing the catheter from slipping out of the cervix during the balloon water injection process; the balloon expands due to water injection, and the expansion ring expands due to liquid absorption, thereby doubly sealing the cervix and preventing the contrast agent from being exposed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a schematic diagram of the structure of the hysterosalpingography catheter improved by the present invention.

[0018] In the figure, 1-liquid passage tube, 2-balloon, 3-expansion ring, 4-guiding tube, 5-closed end, 6-opening, 7-handle, 8-liquid passage hose, 9-guiding hose. DETAILED DESCRIPTION

[0019] In order to better illustrate the purpose, technical solutions and advantages of the present invention, the present invention will be further described below in conjunction with specific embodiments.

[0020] like Figure 1As shown, the utility model provides a hysterosalpingography catheter, comprising a liquid passage tube 1, a balloon 2, an expansion ring 3 and a guide tube 4. The interior of the liquid passage tube 1 is hollow, one end of the liquid passage tube 1 is a closed end 5, and the other end of the liquid passage tube 1 has a liquid inlet. The liquid passage tube 1 is provided with an opening 6 on the side wall near the closed end 5. The balloon 2 is arranged on the liquid passage tube 1, and the opening 6 is located between the closed end 5 and the balloon 2. The balloon 2 is connected to the guide tube 4, and the expansion ring 3 is sleeved on the liquid passage tube 1 and the guide tube 4.

[0021] The utility model comprises a double-tube structure consisting of a liquid passage tube 1 and a flow guide tube 4, wherein one end of the liquid passage tube 1 is set as a closed end, and an opening 6 is set on the side wall of the liquid passage tube 1, so that the opening 6 is not easily blocked by cervical mucus or tissue during the catheter placement process; the expansion ring 3 provided in the utility model can contact the cervical mucus to expand after the hysterosalpingography catheter enters the uterine cavity, thereby increasing the friction force, and preventing the catheter from slipping out of the uterus and the cervix during the water injection process of the balloon 2, thereby facilitating the improvement of the operational controllability of the catheter of the utility model; the balloon 2 expands due to water injection, and the expansion ring 3 expands due to liquid absorption, thereby doubly sealing the cervix, avoiding the exposure of the contrast agent, and facilitating the improvement of the accuracy of the contrast detection.

[0022] In one embodiment, the hysterosalpingography catheter further includes a handle 7, which is sleeved on the liquid passage tube 1 and the flow guide tube 4. It is convenient for an operator to hold the handle 7 to control the hysterosalpingography catheter.

[0023] In one embodiment, the outer wall of the liquid passage tube 1 is integrally connected with the outer wall of the flow guiding tube 4 .

[0024] In one embodiment, the liquid inlet of the liquid passage tube 1 is connected to a liquid passage hose 8 ; and the end of the fluid guiding tube 4 away from the balloon 2 is connected to a fluid guiding hose 9 .

[0025] In one embodiment, the liquid passage tube 1 and the drainage tube 4 are both made of plastic; more preferably, they are made of hard plastic. The liquid passage tube 1 and the drainage tube 4 made of hard plastic are not easily deformed and are easier to be pushed into the cervix.

[0026] In one embodiment, the closed end 5 of the liquid passage 1 is hemispherical.

[0027] In one embodiment, the expansion ring 3 is made of medical sponge material.

[0028] In one embodiment, the number of openings 6 is not less than two, and the openings 6 are evenly spaced along the circumference of the liquid passage tube 1. A plurality of openings 6 are arranged on the side wall of the liquid passage tube 1 along the circumference of the liquid passage tube 1, which are not easy to be blocked, thereby reducing the probability of false positives in fallopian tube angiography due to blockage of the openings.

[0029] In the present invention, the end of the liquid passage tube 1 away from the handle 7 can be designed to be a curved structure adapted to the uterine cavity and the cervix.

[0030] During operation, the operator holds the handle 7 and manipulates the hysterosalpingography catheter to slowly insert into the uterus; physiological saline is delivered to the balloon 2 through the guide tube 4 to expand the balloon 2; during the insertion process, the expansion ring 3 encounters the mucus in the cervix and gradually expands, increasing the friction, which can effectively prevent the catheter from slipping out of the cervix, and the balloon 2 and the expansion ring 3 expand, playing a good role in sealing the cervix; finally, the contrast agent is introduced into the uterine cavity and fallopian tube through the hose 8 and the liquid tube 1, and the flow process of the contrast agent can be observed under ultrasound or X-ray to display the morphology of the uterine cavity and the fallopian tube cavity and the diffusion of the contrast agent in the abdominal cavity.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit the protection scope of the utility model. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A hysterosalpingography catheter, characterized in that: The invention comprises a liquid passing tube, a balloon, an expansion ring and a guide tube. The interior of the liquid passing tube is hollow, one end of the liquid passing tube is a closed end, the other end of the liquid passing tube has a liquid inlet, an opening is arranged on the side wall of the liquid passing tube close to the closed end, the balloon is arranged on the liquid passing tube, the opening is located between the closed end and the balloon, the balloon is connected to the guide tube, and the expansion ring is arranged on the liquid passing tube and the guide tube.

2. The hysterosalpingography catheter according to claim 1, characterized in that: It also includes a handle, which is sleeved on the liquid passing tube and the flow guiding tube.

3. The hysterosalpingography catheter according to claim 1, characterized in that: The outer wall of the liquid passage pipe is integrally connected with the outer wall of the flow guide pipe.

4. The hysterosalpingography catheter according to claim 1, wherein: The liquid inlet of the liquid passage pipe is connected with a hose.

5. The hysterosalpingography catheter according to claim 1, characterized in that: The liquid passage pipe and the flow guide pipe are both made of plastic.

6. The hysterosalpingography catheter according to claim 1, characterized in that: The closed end of the liquid passage is hemispherical.

7. The hysterosalpingography catheter according to claim 1, characterized in that: The expansion ring is made of medical sponge material.

8. The hysterosalpingography catheter according to claim 1, characterized in that: The number of the openings is not less than two, and the openings are distributed at equal intervals along the circumference of the liquid passage.

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