An inflatable device for colon CT imaging

Abstract

This invention relates to the field of medical device technology, and discloses an inflation device for colon CT angiography, comprising: an air guide tube, a perianal top sleeve, and a flanged balloon tube. The air guide tube is slidably connected within the central hole of the perianal top sleeve, and the bottom end of the flanged balloon tube is slidably connected inside the air guide tube. The flanged balloon tube, the perianal top sleeve, and the air guide tube form an externally sealed inflation chamber that buffers the perianal area, anal canal, and anal cavity. The flanged balloon tube and the inner wall of the perianal top sleeve form an internally sealed inflation chamber. The relative movement between the air guide tube and the anus is achieved through a flanged insertion method. A flange is formed on the outside of the air guide tube, and the air guide tube and the flanged balloon tube slide relative to each other. The flanged balloon tube continuously increases in length, causing the flanged surface of the balloon tube to conform to the anus and anal canal. This converts the entire sliding process into a contact process, ensuring smooth insertion of the air guide tube without the use of a lubricating medium.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an inflatable device for colon CT angiography. Background Technology

[0002] A colon CT scan requires the insertion of an air tube through the anus. Pressurized gas is then introduced through the air tube to inflate the intestines, with the aim of making the CT images clearer.

[0003] The main challenge in using the current intubation tube lies in its insertion into the anus. The outer wall of the tube will experience sliding friction with the anal sphincter and anal canal, necessitating the use of lubricant. Currently, the length of the contrast-enhanced intubation tube is approximately 5cm, resulting in at least a 3cm sliding distance between the tube and the anus after insertion. Although lubricant can reduce this friction, the tube and anus are still in a state of sliding friction, which can still cause some sliding damage to the anal canal.

[0004] Secondly, the endotracheal tube usually has an inflatable bladder around its periphery, which needs to be inflated after insertion. Since the bladder is deformable, the probability of it slipping out increases if the perianal area is too lubricated. When intestinal pressure increases, the endotracheal tube, affected by perianal lubrication, also tends to shift outwards.

[0005] Therefore, if the problems of anal slippage and balloon slippage can be overcome, not only can the harm to the patient be reduced, but the stability of balloon fixation can also be improved. Summary of the Invention

[0006] The purpose of this invention is to provide an inflatable device for colon CT angiography to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] An inflatable device for colon CT contrast examination includes: an air guide tube, a perianal top sleeve, and a flanged balloon tube. The air guide tube is slidably connected to the central hole of the perianal top sleeve, the bottom end of the flanged balloon tube is slidably connected to the inside of the air guide tube, and the top end of the flanged balloon tube is outwardly fixed to the surface of the perianal top sleeve.

[0009] The flanged airbag tube, together with the perianal top sleeve and the air guide tube, forms an externally sealed air chamber that buffers the perianal area, anal canal, and anal cavity. The flanged airbag tube and the inner wall of the perianal top sleeve form an internally sealed air chamber.

[0010] As a further embodiment of the present invention: a guide sleeve is fixedly connected to the center of the perianal top sleeve, and the air duct is slidably connected inside the guide sleeve.

[0011] As a further embodiment of the present invention: a positioning ring that fits against the guide sleeve is fixedly connected to the outer wall of the air guide tube.

[0012] As a further embodiment of the present invention: the top of the air duct is provided with an arc-shaped surface, and the arc-shaped surface is slidably connected to the flange of the flanged airbag tube.

[0013] As a further embodiment of the present invention: a sealing groove is provided on the inner wall of the air guide tube, and a sliding sealing ring is slidably connected to the inner wall of the air guide tube, and the sliding sealing ring is fixedly connected to the bottom end of the flanged airbag tube.

[0014] As a further embodiment of the present invention: the sealing groove has a slot that mates with the sliding sealing ring, the cross-sectional shape of the flanged airbag tube is "L" shaped, and the flanged airbag tube is slidably connected to the slot.

[0015] As a further embodiment of the present invention: a rigid support ring is fixedly connected to the inner wall of the bottom end of the flanged airbag tube.

[0016] As a further embodiment of the present invention, the flanged airbag tube is made of an elastic material, and the diameter of the outer flanged end of the flanged airbag tube is larger than the diameter of the bottom end of the flanged airbag tube.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] This invention employs a flanged insertion method to achieve relative movement between the air tube and the anus. A flange is formed on the outside of the air tube, and the air tube slides relative to the flanged balloon tube. The flanged balloon tube only continuously increases in flange length, causing the flanged surface of the balloon tube to fit against the anus and anal canal. This transforms the entire sliding process into a contact process, ensuring smooth insertion of the air tube without the use of a lubricating medium.

[0019] Based on the flanged structure, this structure also enables inflation locking. During compression, the outer sealed inflation chamber transforms from a triangular shape to a curved shape. The curved outer sealed inflation chamber has a concave surface and two protruding ends, located at the top of the inner sealed inflation chamber near the air guide tube and on the surface of the inner sealed inflation chamber near the perianal dome, respectively. Therefore, inflating the outer sealed inflation chamber with air causes it to expand. After expansion, the flanged airbag tube undergoes elastic deformation and expands outward. The curved portion of the outer wall of the outer sealed inflation chamber also conforms to the anal canal, ensuring a tight seal between the air guide tube and the anus under the air pressure of the outer sealed inflation chamber.

[0020] Furthermore, the flanged airbag tube, at the contact point with the top of the air delivery tube, is divided into two spaces: an outer sealed inflation chamber and an inner sealed inflation chamber. Gas is injected into the outer sealed inflation chamber, and this gas also enters the inner sealed inflation chamber, which expands only towards the center of the air delivery tube. If an inflation tube is inserted into the air delivery tube, it can be sealed by clamping the inflation tube within the inner sealed inflation chamber. The air delivery tube, perianal top sleeve, and flanged airbag tube have a simple structure and low manufacturing cost, therefore they can be used as a disposable kit and discarded after use. The inflation tube connected to the device does not come into contact with the human body, thus significantly reducing the difficulty of disinfection. Overall, this improves the convenience and hygiene of use. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram illustrating the use of an inflatable device for colon CT imaging.

[0023] Figure 2 A schematic diagram of a closed inflatable device for colon CT imaging.

[0024] Figure 3 A three-dimensional schematic diagram of an inflatable device for colon CT imaging.

[0025] Figure 4 A front view schematic diagram of an inflatable device for colon CT imaging.

[0026] Figure 5 This is a schematic front cross-sectional view of an inflatable device for colon CT imaging.

[0027] Figure 6 This is a three-dimensional schematic diagram of an inflatable device for colon CT imaging from another perspective.

[0028] Figure 7 for Figure 5 Enlarged diagram of section A in the middle;

[0029] In the diagram: 1. Air guide tube; 11. Positioning ring; 12. Sealing groove; 13. Arc-shaped surface; 2. Perianal top sleeve; 21. Guide sleeve; 3. Flanged airbag tube; 31. Sliding sealing ring; 32. Rigid support ring; 4. Outer closed inflation chamber; 5. Inner closed inflation chamber. Detailed Implementation

[0030] Please see Figures 1-7Example 1:

[0031] In this embodiment, to change the movement of the air tube 1 during insertion into the anus from sliding to contact, thereby reducing sliding friction, the following improvements were made:

[0032] In this embodiment, the following components are included: an air guide tube 1, a perianal top sleeve 2, and a flanged airbag tube 3. The air guide tube 1 is slidably connected to the middle hole of the perianal top sleeve 2, the bottom end of the flanged airbag tube 3 is slidably connected to the inside of the air guide tube 1, and the top end of the flanged airbag tube 3 is outwardly fixedly connected to the surface of the perianal top sleeve 2.

[0033] Improvement principle: Please refer to Figure 1 and Figure 2 The anal sleeve 2 contacts the perianal area and has a hole in the middle. The air tube 1 slides in the middle of the anal sleeve 2. The flanged airbag tube 3 slides on the inner wall of the air tube 1, and the outer edge of the flanged airbag tube 3 is fixedly connected to the top surface of the air tube 1. During use, the air tube 1 adheres to the perianal area and is pushed towards the anus. The flanged airbag tube 3 contains air, preventing the rigid air tube 1 from directly contacting the anus. The air tube 1 is pushed into the anus, pushing and expanding the anus to both sides, and the flanged airbag tube 3 directly contacts the anus. During the entire process of opening the anus, the flanged length of the flanged airbag tube 3 gradually increases, and the flanged airbag tube 3 continuously adheres to the perianal area. The contact area between the flanged airbag tube 3 and the perianal area continuously increases. During the pushing of the air tube 1, the flanged airbag tube 3 will not slide relative to the perianal area, so the anus will not be affected by friction. Similarly, during the retraction of the air tube 1, the position of the perianal top sleeve 2 remains unchanged, while the air tube 1 moves outward. The everted flanged balloon tube 3 begins to return to its original position, and the everted length of the flanged balloon tube 3 gradually decreases. Throughout the entire process, the flanged balloon tube 3 will not slide relative to the anus.

[0034] Example 2:

[0035] Example 2: To address the issue of Example 1's non-slip insertion anal structure and to achieve a sealed fixation at the anal structure, the following improvements are made:

[0036] Based on Example 1, the structure is improved as follows: the flanged airbag tube 3 forms an externally closed air chamber 4 between the perianal top sleeve 2 and the air guide tube 1 to buffer the perianal area, anal canal and anal cavity.

[0037] Improvement principle: Please refer to Figure 2 and Figure 5The everted, flared airbag tube 3, the air guide tube 1, and the perianal top sleeve 2 form an outer closed inflation chamber 4, while the outer wall of the everted airbag tube 3 and the inner wall of the air guide tube 1 form an inner closed inflation chamber 5. During compression, the outer closed inflation chamber 4 transforms from a triangular shape to a curved shape. The curved outer closed inflation chamber 4 has a concave surface and two protruding ends, located at the top of the inner closed inflation chamber 5 near the air guide tube 1 and the surface of the inner closed inflation chamber 5 near the perianal top sleeve 2, respectively. Therefore, injecting air into the outer closed inflation chamber 4 causes it to expand. After expansion, the everted airbag tube 3 undergoes elastic deformation and expands outwards. The curved portion of the outer wall of the outer closed inflation chamber 4 also conforms to the anal canal, ensuring a tight seal between the air guide tube 1 and the anus under the pressure of the outer closed inflation chamber 4.

[0038] Example 3:

[0039] Since Embodiment 2 can achieve the inflation function, it only requires connecting the air pipe 1 to an external air supply and pressurization device. To increase applicability and make it suitable for existing inflation devices and inflation pipes, Embodiment 3 makes the following improvements based on Embodiment 2:

[0040] The flanged airbag tube 3 and the inner wall of the perianal top sleeve 2 form an internally closed air chamber 5.

[0041] Please see Figure 5 The flanged airbag tube 3, at its tip, contacts the air guide tube 1, dividing the space into two chambers: an outer sealed inflation chamber 4 and an inner sealed inflation chamber 5. Gas is injected into the outer sealed inflation chamber 4, and this gas also enters the inner sealed inflation chamber 5, which expands only towards the center of the air guide tube 1. If an inflation tube is inserted into the air guide tube 1, it can be sealed by clamping the inflation tube through the inner sealed inflation chamber 5. At this point, the air guide tube 1, the perianal top sleeve 2, and the flanged airbag tube 3 are disposable components. Since the inflation tube connected to the device does not come into contact with the human body, the difficulty of disinfection is significantly reduced. Overall, this improves the convenience and hygiene of use.

[0042] Example 4:

[0043] In Example 4, based on Example 2, the following improvements are made to prevent the air tube 1 from detaching from the anus: a guide tube 21 is fixedly connected to the center of the perianal top sleeve 2, the air tube 1 is slidably connected inside the guide tube 21, and a positioning ring 11 that fits into the guide tube 21 is fixedly connected to the outer wall of the air tube 1.

[0044] Please see Figure 5As can be seen from the above, to separate the air tube 1 from the anus, the air tube 1 and the perianal top sleeve 2 need to slide relative to each other. Once the guide sleeve 21 is attached to the positioning ring 11, the connection between the positioning ring 11 and the guide sleeve 21 can be established. The connection method is as follows:

[0045] The positioning ring 11 and the guide sleeve 21 have continuous threads of the same specification on their surfaces. The positioning ring 11 and the guide sleeve 21 are fixed by screwing the threaded sleeve into them.

[0046] An adhesive layer is provided on the contact surface of the positioning ring 11 and the guide sleeve 21. The adhesive layer can be an adhesive layer or a Velcro layer. Fixing is achieved by the contact between the positioning ring 11 and the guide sleeve 21.

[0047] The contact surfaces of the positioning ring 11 and the guide sleeve 21 can be equipped with a snap-fit ​​structure, which includes, but is not limited to, pin locking and wedge locking. The pin locking can adopt the telescopic locking method of the umbrella rod, and the wedge locking can be formed by the cooperation of elastic snap and slotted pin.

[0048] After the positioning ring 11 and the guide sleeve 21 are connected, the lower part of the perianal top sleeve 2 and the outer sealed air chamber 4 are in contact with the perianal area, and the upper part of the outer sealed air chamber 4 is in contact with the inner wall of the anus. At this time, the air guide tube 1 cannot be separated from the anus, and the air guide tube 1 seals the anal contact surface.

[0049] The following are supplementary explanations for the above embodiments:

[0050] Supplement to the sliding structure of air tube 1 and flanged airbag tube 3:

[0051] The top of the air tube 1 has an arc-shaped surface 13, which slides in connection with the flange of the flanged balloon tube 3. During insertion into the anus, the air tube 1 does not slide against the anus, but it does slide against the flanged balloon tube 3. Therefore, the arc-shaped surface 13 is provided at the top of the air tube 1. A Teflon film or lubricant can be attached to the arc-shaped surface 13 to facilitate smooth sliding between the air tube 1 and the flanged balloon tube 3. The lubricant only exists inside the outer sealed inflation chamber 4 and the inner sealed inflation chamber 5, thus preventing lubrication around the anus.

[0052] Supplement to the sealing structure of air delivery tube 1 and flanged airbag tube 3:

[0053] The inner wall of the air duct 1 is provided with a sealing groove 12, and a sliding sealing ring 31 is slidably connected to the inner wall of the air duct 1. The sliding sealing ring 31 is fixedly connected to the bottom end of the flanged airbag tube 3. The sealing groove 12 has a slot that cooperates with the sliding sealing ring 31. The cross-sectional shape of the flanged airbag tube 3 is "L" shaped, and the flanged airbag tube 3 is slidably connected to the slot.

[0054] Please see Figure 5 , Figure 7 When the bottom end of the flanged airbag tube 3 slides upward, the sliding sealing ring 31 will be inserted into the slot of the sealing groove 12. The L-shaped sliding sealing ring 31 and the sealing groove 12 slot are engaged to achieve a labyrinthine treatment, which increases the sealing of the connection and enables the closed space of the outer closed inflation chamber 4 and the inner closed inflation chamber 5 to be realized.

[0055] A rigid support ring 32 is fixedly connected to the inner wall of the bottom end of the flanged airbag tube 3. The rigid support ring 32 can prevent the bottom end of the flanged airbag tube 3 from expanding to the center of the air guide tube 1. The rigid support ring 32 makes it easier to guide the inflation tube into the air guide tube 1 and the inner sealed inflation chamber 5.

[0056] The flanged airbag tube 3 is made of elastic material, and the diameter of the outer flanged end of the flanged airbag tube 3 is larger than the diameter of the bottom end of the flanged airbag tube 3.

[0057] Please see Figure 5 When the diameter of the outward-curved end of the flared balloon tube 3 is greater than the diameter of the bottom end of the flared balloon tube 3, a triangular area is formed between the flared balloon tube 3 and the perianal top sleeve 2. After the outer closed inflation chamber 4 is inflated, the outer closed inflation chamber 4 is constrained by the sphincter muscle, and the expansion point of the outer closed inflation chamber 4 is located at the upper and lower ends. Therefore, the raised areas formed at the upper and lower ends can just limit the movement of the anus externally and internally.

[0058] Further explanation:

[0059] The bottom surface of the perianal top sleeve 2 can have a hole or pipe connecting to the outer closed inflation chamber 4. The pipe inflates the outer closed inflation chamber 4 and the inner closed inflation chamber 5 through an external air supply mechanism. Secondly, the flanged airbag tube 3 contains its own gas. If additional inflation of the flanged airbag tube 3 is required, an inflation pipe or hole can be provided on the bottom surface of the perianal top sleeve 2. Since the end of the flanged airbag tube 3 also has a connection point with the perianal top sleeve 2, a hole at the perianal top sleeve 2 is sufficient to accommodate the inflation of the outer closed inflation chamber 4 and the flanged airbag tube 3.

[0060] The above description is merely 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. An inflatable device for colon CT angiography, characterized in that: include: Air tube (1), perianal top sleeve (2), and flanged airbag tube (3). The air tube (1) is slidably connected to the middle hole of the perianal top sleeve (2). The bottom end of the flanged airbag tube (3) is slidably connected to the inside of the air tube (1). The top end of the flanged airbag tube (3) is turned outward and fixedly connected to the surface of the perianal top sleeve (2). The flanged airbag tube (3) forms an externally closed air chamber (4) between the perianal top sleeve (2) and the air guide tube (1) to buffer the perianal area, anal canal and anal cavity, and the flanged airbag tube (3) forms an internally closed air chamber (5) between the inner wall of the perianal top sleeve (2). The center of the perianal top sleeve (2) is fixedly connected to a guide sleeve (21), and the air guide tube (1) is slidably connected inside the guide sleeve (21); the top of the air guide tube (1) is provided with an arc-shaped surface (13), and the arc-shaped surface (13) is slidably connected to the flange of the flanged airbag tube (3).

2. The inflatable device for colon CT angiography according to claim 1, characterized in that: The outer wall of the air duct (1) is fixedly connected with a positioning ring (11) that fits against the guide sleeve (21).

3. The inflatable device for colon CT angiography according to claim 1, characterized in that: The inner wall of the air duct (1) is provided with a sealing groove (12), and the inner wall of the air duct (1) is slidably connected with a sliding sealing ring (31), which is fixedly connected to the bottom end of the flanged airbag tube (3).

4. The inflatable device for colon CT contrast examination according to claim 3, characterized in that: The sealing groove (12) has a slot that mates with the sliding sealing ring (31), the cross-sectional shape of the flanged airbag tube (3) is "L" shaped, and the flanged airbag tube (3) is slidably connected to the slot.

5. The inflatable device for colon CT angiography according to claim 1, characterized in that: A rigid support ring (32) is fixedly connected to the inner wall of the bottom end of the flanged airbag tube (3).

6. The inflatable device for colon CT angiography according to claim 1, characterized in that: The flanged airbag tube (3) is made of elastic material, and the diameter of the outer flanged end of the flanged airbag tube (3) is larger than the diameter of the bottom end of the flanged airbag tube (3).

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