Water bag type ultrasonic probe sleeve for assisting intracavity radiography

Abstract

The utility model discloses a water bag type ultrasonic probe sleeve for assisting intracavity radiography, which comprises a double-layer hollow elastic sleeve capable of being sleeved on an ultrasonic probe, and the double-layer hollow elastic sleeve is provided with an outer wall capable of being contacted with a body cavity, an inner wall capable of being attached to the ultrasonic probe through a coupling agent and an inner cavity positioned between the outer wall and the inner wall, the double-layer hollow elastic sleeve is provided with a first catheter which is communicated with the inner cavity and can be externally connected with an injector, the first catheter is provided with a switch structure capable of opening or closing the orifice of the first catheter, and the double-layer hollow elastic sleeve is further connected with a second catheter capable of injecting a contrast agent into the body cavity; by injecting water into the inner cavity, on one hand, a sound transmission window which is independent of the body cavity and has a good sound conducting effect can be formed, and on the other hand, the double-layer hollow elastic sleeve can flatten the plica in the body cavity to facilitate observation of the rectum wall or the vaginal wall, and a contrast agent can be injected into the same body cavity through the second catheter. Under the assistance of the expanded double-layer hollow elastic sleeve, the fistulous tract can be fully permeated, so that the diagnosis of the fistulous tract is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic probe covers, in particular to a water sac type ultrasonic probe cover for assisting intracavitary contrast imaging. Background Art

[0002] Rectovaginal fistula refers to the appearance of a pathological channel between the rectum and the vagina, resulting in the discharge of gas, feces or pus from the vagina; vesicovaginal fistula refers to the appearance of an abnormal channel between the bladder and the vagina, mainly manifested as involuntary urine leakage from the vagina. Both seriously affect the physical and mental health and quality of life of patients.

[0003] Endocavitary ultrasound includes transrectal ultrasound and transvaginal ultrasound, which can be used to diagnose rectovaginal fistula or vesicovaginal fistula. However, the early diagnosis of rectovaginal fistula and vesicovaginal fistula is difficult because the fistula opening is small and often accompanied by swelling, making it difficult to directly observe the fistula tract. Injecting an ultrasound contrast agent into the cavity helps to display the fistula tract. However, currently, endocavitary ultrasound probes use viscous paste-like coupling agents to conduct sound to display the rectal wall or vaginal wall. When using an ultrasound contrast agent, it needs to be carried by normal saline, and the contrast agent cannot flow in the cavity filled with paste-like coupling agent. Therefore, the contrast agent can usually only be injected into another cavity for observation, with cumbersome and complex operations and poor observation effects. In addition, there is also the problem that the tension of the contrast agent injected into the cavity is insufficient to allow the contrast agent to penetrate into the fistula tract. Summary of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a water sac type ultrasonic probe cover for assisting intracavitary contrast imaging. By injecting water into the inner cavity, on the one hand, it can form a sound-transmitting window that is independent of the body cavity and has good sound conduction effect. On the other hand, the double-layer hollow elastic sleeve can flatten the folds in the body cavity to facilitate the observation of the rectal wall or vaginal wall, and the contrast agent can be injected into the same body cavity through the second catheter. With the assistance of the inflated double-layer hollow elastic sleeve, it can fully penetrate into the fistula tract, which is helpful for diagnosing the fistula tract.

[0005] The technical solution adopted by the utility model to solve its technical problems is to provide a water sac type ultrasonic probe cover for assisting intracavitary contrast imaging, including a double-layer hollow elastic sleeve that can be sleeved on the ultrasonic probe. The double-layer hollow elastic sleeve has an outer wall that can contact the body cavity, an inner wall that can be attached to the ultrasonic probe through a coupling agent, and an inner cavity located between the outer wall and the inner wall. The double-layer hollow elastic sleeve is provided with a first catheter that communicates with the inner cavity and can be externally connected to a syringe. A switch structure is provided on the first catheter to open or close the orifice of the first catheter. The double-layer hollow elastic sleeve is also connected with a second catheter that can inject a contrast agent into the body cavity.

[0006] As a further improvement of the utility model, the inner wall is provided with an elastic fastener for fixing the double-layer hollow elastic sleeve on the ultrasonic probe.

[0007] As a further improvement of the present utility model, a plurality of first through holes are provided at one end of the second catheter close to the double-layer hollow elastic sleeve.

[0008] As a further improvement of the present utility model, a film covering the second catheter is further connected to the outer wall, and a plurality of second through holes are provided on the surface of the film.

[0009] As a further improvement of the present utility model, the connection between the film and the outer wall is arc-shaped.

[0010] As a further improvement of the present utility model, a sealing film connected to the film and the outer wall and sleeved on the second catheter is further included, and the sealing film divides the cavity between the film and the outer wall into an upper cavity and a lower cavity to limit the inflow of the contrast agent into the lower cavity.

[0011] As a further improvement of the present utility model, the sealing film, the film and the double-layer hollow elastic sleeve are of an integral structure.

[0012] As a further improvement of the present utility model, an opening is provided at the lower end of the film for the lower end of the second catheter to extend out.

[0013] As a further improvement of the present utility model, the switching structure is a three-way joint.

[0014] The beneficial effects of the present utility model are at least as follows: the double-layer hollow elastic sleeve can achieve a good sound conduction effect by discharging air and injecting water. At the same time, the double-layer hollow elastic sleeve has a certain tension and can flatten the body cavity wall for convenient observation; the second catheter is beneficial to injecting the contrast agent into the same body cavity, and the contrast agent can wet the entire body cavity more conveniently for observing the fistula by adjusting the liquid tension of the double-layer hollow elastic sleeve. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is a structural sectional view of the present utility model. Detailed Embodiments

[0017] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the drawings.

[0018] Refer to Figure 1-2, the present utility model proposes a water-filled balloon-type ultrasonic probe sheath for assisting in intracavitary contrast imaging, which includes a double-layer hollow elastic sheath 2 that can be sleeved on the ultrasonic probe 1. The double-layer hollow elastic sheath 2 has an outer wall 21 that can contact the body cavity, an inner wall 23 that can be attached to the ultrasonic probe 1 through a coupling agent, and an inner cavity 22 located between the outer wall 21 and the inner wall 23. The double-layer hollow elastic sheath 2 is provided with a first catheter 3 that communicates with the inner cavity 22 and can be externally connected to a syringe. A switch structure 31 that can open or close the orifice of the first catheter 3 is provided on the first catheter 3. The double-layer hollow elastic sheath 2 is also connected with a second catheter 4 that can inject contrast agent into the body cavity. After the switch structure 31 is opened, water can be injected into the inner cavity 22 using a syringe, causing the double-layer hollow elastic sheath 2 to expand. On the one hand, it can form a sound-transmitting window that is independent of the body cavity and has good sound conduction effect. On the other hand, the double-layer hollow elastic sheath can flatten the folds in the body cavity to facilitate the observation of the rectal wall or vaginal wall, and the contrast agent can be injected into the same body cavity through the second catheter 4. With the assistance of the expanded double-layer hollow elastic sheath 2, it can fully penetrate into the fistula, which helps in the diagnosis of the fistula.

[0019] As a further improvement of the present utility model, the inner wall 23 is provided with an elastic fastener 5 for fixing the double-layer hollow elastic sheath 2 on the ultrasonic probe 1.

[0020] As a further improvement of the present utility model, the second catheter 4 is provided with a plurality of first through holes 41 at one end close to the double-layer hollow elastic sheath 2; since the body cavity will be attached to the double-layer hollow elastic sheath 2 during the detection, setting a plurality of first through holes 41 can facilitate the outflow of the contrast agent.

[0021] As a further improvement of the present utility model, the outer wall 21 is also connected with a film 6 that covers the second catheter 4. A plurality of second through holes 61 are provided on the surface of the film 6; since the second catheter 4 is directly arranged outside the outer wall 21, when entering the body cavity, the port of the second catheter 4 may cause discomfort to the patient. Therefore, setting a film 6 that covers the second catheter 4 can reduce the discomfort of the patient.

[0022] As a further improvement of the present utility model, the connection between the film 6 and the outer wall 21 is arc-shaped, so that the body cavity wall of the patient can smoothly transition when contacting the port of the second catheter 4, reducing the discomfort.

[0023] As a further improvement of the present utility model, it further includes a sealing film that is connected to the film 6 and the outer wall 21 and sleeved on the second catheter 4. The sealing film divides the cavity between the film 6 and the outer wall 21 into an upper cavity 63 and a lower cavity 64 to limit the inflow of the contrast agent into the lower cavity 64; so that most of the contrast agent can effectively remain in the body cavity, reducing the outflow of the contrast agent from the vaginal orifice or the rectal orifice.

[0024] As a further improvement of the present utility model, the sealing film, the film 6 and the double-layer hollow elastic sheath 2 are of an integral structure.

[0025] As a further improvement of the present utility model, an opening is provided at the lower end of the thin film 6 for the lower end of the second catheter 4 to extend out; to provide a certain moving space for the second catheter 4.

[0026] As a further improvement of the present utility model, the switch structure 31 is a three-way joint.

[0027] Operation steps:

[0028] Sheathe the double-layer hollow elastic sleeve 2 on the ultrasonic probe 1. The inner wall 23 is fully attached to the ultrasonic probe 1 through a coupling agent. Place the ultrasonic probe 1 at an appropriate depth in the rectum. Open the three-way joint. Use a syringe to draw out the air in the inner cavity 22, and use a syringe to inject water into the inner cavity 22. Gradually adjust the water volume to flatten the folds in the body cavity with the outer wall 21 to facilitate the observation of the rectal wall or vaginal wall.

[0029] When intravascular ultrasound contrast is required, first appropriately reduce the liquid in the inner cavity 22 to leave a certain space in the body cavity. Then, inject the ultrasound contrast agent through the second catheter 4. Rotate the ultrasonic probe 1 to fully moisten the body cavity with the contrast agent. Then, increase the liquid in the inner cavity 22 to force the flow of the contrast agent so that the contrast agent can enter the fistula with sufficient pressure to facilitate the determination of the position of the fistula and the clarification of the course of the other end of the fistula.

Claims

1. A water-bag type ultrasound probe cover for assisting intracavitary angiography, characterized in that: The invention comprises a double-layer hollow elastic sleeve (2) which can be sleeved on an ultrasonic probe (1), the double-layer hollow elastic sleeve (2) having an outer wall (21) which can contact a body cavity, an inner wall (23) which can be attached to the ultrasonic probe (1) via a coupling agent, and an inner cavity (22) located between the outer wall (21) and the inner wall (23), the double-layer hollow elastic sleeve (2) being provided with a first catheter (3) which is in communication with the inner cavity (22) and can be connected to an external syringe, the first catheter (3) being provided with a switch structure (31) which can open or close the tube mouth of the first catheter (3), and the double-layer hollow elastic sleeve (2) being further connected to a second catheter (4) which can inject a contrast agent into the body cavity.

2. The water-bag type ultrasound probe cover for assisting intracavitary angiography according to claim 1, characterized in that: The inner wall (23) is provided with an elastic fastener (5) for fixing the double-layer hollow elastic sleeve (2) on the ultrasonic probe (1).

3. The water-bag type ultrasound probe cover for assisting intracavitary angiography according to claim 1, characterized in that: The second conduit (4) is provided with a plurality of first through holes (41) at one end close to the double-layer hollow elastic sleeve (2).

4. The water-bag type ultrasound probe cover for assisting intracavitary angiography according to claim 3, characterized in that: The outer wall (21) is also connected to a film (6) covering the second conduit (4), and a plurality of second through holes (61) are provided on the surface of the film (6).

5. The water-bag type ultrasound probe cover for assisting intracavitary angiography according to claim 4, characterized in that: The connection between the film (6) and the outer wall (21) is arc-shaped.

6. The water-bag type ultrasound probe cover for assisting intracavitary angiography according to claim 4, characterized in that: It also includes a closing membrane connected to the film (6) and the outer wall (21) and sleeved on the second catheter (4), the closing membrane divides the cavity between the film (6) and the outer wall (21) into an upper cavity (63) and a lower cavity (64) to limit the contrast agent from flowing into the lower cavity (64).

7. The water-bag type ultrasound probe cover for assisting intracavitary angiography according to claim 6, characterized in that: The sealing membrane, the film (6) and the double-layer hollow elastic sleeve (2) are an integrated structure.

8. The water-bag type ultrasound probe cover for assisting intracavitary angiography according to claim 4, characterized in that: The lower end of the film (6) is provided with an opening through which the lower end of the second conduit (4) can extend.

9. The water-bag type ultrasound probe cover for assisting intracavitary angiography according to claim 1, characterized in that: The switch structure (31) is a three-way joint.

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