Inflation device for colon CT radiography examination

Abstract

The invention relates to the technical field of medical instruments, and discloses a colon CT radiography examination inflation device which comprises an air guide tube, a crissum top sleeve and a turnup air bag tube, the air guide tube is slidably connected into a middle hole of the crissum top sleeve, the bottom end of the turnup air bag tube is slidably connected into the air guide tube, and the turnup air bag tube is arranged in the middle hole of the crissum top sleeve. An outer closed inflation chamber for buffering the crissum, the anal tube and the anal interior is formed among the flanged air bag tube, the crissum top sleeve and the air guide tube, and an inner closed inflation chamber is formed by the flanged air bag tube and the inner wall of the crissum top sleeve; the relative movement of the air guide tube and the anus is realized by adopting a flanging top insertion mode. A turnup is formed outside the air guide tube, the air guide tube and the turnup air bag tube slide relatively, and the turnup air bag tube can only increase the length of the turnup continuously, so that the turnup face of the turnup air bag tube is attached to the anus and the anal tube. The whole sliding process is converted into the contact process, and smooth insertion of the air guide pipe can still be guaranteed under the condition that a lubricating medium is not used.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and specifically relates to an inflation device for colon CT angiography examination. Background Art

[0002] For colon CT angiography, an air duct needs to be inserted through the anus, and pressurized gas is inflated through the air duct to expand the intestine, aiming to make the CT film clearer.

[0003] Currently, the main difficulty in using the air duct lies in that the air duct needs to be inserted into the anus. The outer wall of the air duct will generate sliding friction with the anal sphincter and the anal canal, so lubricating fluid needs to be added. The length of the current contrast inflation pipeline is about 5 cm. Therefore, when the pipeline is inserted into the anus, there is at least a 3 cm sliding distance between the pipeline and the anus. Although the lubricating fluid can reduce the sliding friction, the pipeline and the anus are still in a sliding friction state, and the sliding friction will still cause certain sliding damage to the anal canal.

[0004] Secondly, an inflation airbag is generally provided on the periphery of the air duct, and the inflation airbag needs to be inflated and expanded after the air duct is inserted. And the airbag has the ability to deform. If the perianal area is too lubricated, the probability of the airbag slipping off will increase. When the intestinal pressure increases, the air duct will also tend to move outward under the influence of perianal lubrication.

[0005] Therefore, if the problems of anal sliding and airbag slipping can be overcome, not only can the harm to patients be reduced, but also the stability of airbag fixation can be improved. Summary of the Invention

[0006] The purpose of the present invention is to provide an inflation device for colon CT angiography examination to solve the problems raised in the above background art.

[0007] To achieve the above purpose, the present invention provides the following technical solutions:

[0008] An inflation device for colon CT angiography examination, comprising: an air duct, a perianal top sleeve, and a flanging airbag tube. The air duct is slidably connected in the middle hole of the perianal top sleeve, the bottom end of the flanging airbag tube is slidably connected inside the air duct, and the top end of the flanging airbag tube is turned outwards and fixedly connected to the surface of the perianal top sleeve;

[0009] An outer closed inflation chamber for buffering the perianal area, anal canal, and inside the anus is formed between the flanging airbag tube, the perianal top sleeve, and the air duct, and an inner closed inflation chamber is formed between the flanging airbag tube and the inner wall of the perianal top sleeve.

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

[0011] As a further solution of the present invention: a positioning ring which fits with the guide sleeve is fixedly connected to the outer wall of the airway tube.

[0012] As a further solution of the present invention: a curved surface is provided on the top of the air guide tube, and the curved surface is slidably connected to the flange of the flanged airbag tube.

[0013] As a further solution of the present invention: a sealing groove is provided on the inner wall of the air guide tube, 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 solution of the present invention: the sealing groove has a slot that cooperates with the sliding sealing ring, the cross-section of the flanged airbag tube is "L"-shaped, and the flanged airbag tube is slidably connected to the slot.

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

[0016] As a further solution of the present invention, the flanged airbag tube is made of elastic material, and the diameter of the outer 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 present invention has the following beneficial effects:

[0018] The present invention realizes the relative movement between the airway tube and the anus by means of a flanged top insertion. A flange is formed on the outside of the airway tube, and the airway tube and the flanged airbag tube slide relative to each other. The flanged airbag tube will only increase the flanged length continuously, so that the flanged surface of the flanged airbag tube fits the anus and the anal canal. The entire sliding process is converted into a contact process, and the smooth insertion of the airway tube can still be ensured without using a lubricating medium.

[0019] On the basis of the flanging structure, this structure can also achieve inflation locking. During the extrusion process, the outer closed air chamber will be converted from a triangle to a curve. The curved outer closed air chamber has a concave surface and two raised ends, which are respectively located at the top part of the inner closed air chamber close to the airway and the surface part of the inner closed air chamber close to the perianal top sleeve. Therefore, the outer closed air chamber can be expanded by rushing gas into the outer closed air chamber. After the outer closed air chamber is expanded, the flanging air bag tube undergoes elastic deformation and expands outward at the same time. The curved part of the outer wall of the outer closed air chamber will also fit the anal canal. Under the action of the air pressure of the outer closed air chamber, the sealing performance of the airway and the anus can be guaranteed.

[0020] Furthermore, the flanging airbag tube contacts with the top end of the air duct and is divided into two spaces: an outer closed inflation chamber and an inner closed inflation chamber. When gas is filled into the outer closed inflation chamber, the gas will also enter the inner closed inflation chamber. The inner closed inflation chamber can only expand towards the center of the air duct. If an inflation tube is inserted into the air duct, clamping the inflation tube through the inner closed inflation chamber can achieve sealing. The air duct, the perianal top sleeve, and the flanging airbag tube have simple structures and low manufacturing costs, so 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, so the disinfection difficulty is greatly reduced. Overall, the convenience and hygiene of use are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 It is a schematic diagram of the use of an inflation device for colon CT angiography;

[0023] Figure 2 It is a schematic diagram of the closure of an inflation device for colon CT angiography;

[0024] Figure 3 It is a three-dimensional schematic diagram of an inflation device for colon CT angiography;

[0025] Figure 4 It is a front view schematic diagram of an inflation device for colon CT angiography;

[0026] Figure 5 It is a front view sectional schematic diagram of an inflation device for colon CT angiography;

[0027] Figure 6 It is a three-dimensional schematic diagram of another perspective of an inflation device for colon CT angiography;

[0028] Figure 7 For Figure 5 an enlarged schematic diagram of part A in

[0029] In the figure: 1. air duct; 11. positioning ring; 12. sealing groove; 13. arc surface; 2. perianal top sleeve; 21. guiding sleeve; 3. flanging airbag tube; 31. sliding sealing ring; 32. rigid support ring; 4. outer closed inflation chamber; 5. inner closed inflation chamber. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] Please refer to Figures 1 - 7Example 1:

[0031] In this embodiment, in order to change the movement state of the air duct 1 inserted into the anus from sliding to contact and reduce the sliding friction, the following improvements are made to achieve the above method:

[0032] In this embodiment, it includes: an air duct 1, a perianal top sleeve 2, and a flanged airbag tube 3. The air duct 1 is slidably connected in the middle hole of the perianal top sleeve 2. The bottom end of the flanged airbag tube 3 is slidably connected inside the air duct 1, and the top end of the flanged airbag tube 3 is turned outwards and fixedly connected to the surface of the perianal top sleeve 2.

[0033] Improvement principle: Please refer to Figure 1 and Figure 2 , the perianal top sleeve 2 contacts the perianal area. The middle part of the perianal top sleeve 2 has a hole. The air duct 1 slides in the middle part of the perianal top sleeve 2. The flanged airbag tube 3 slides on the inner wall of the air duct 1, and the edge after the outer wall of the flanged airbag tube 3 is turned outwards is fixedly connected to the top surface of the air duct 1. During the use process, the air duct 1 adheres to the perianal area and is pushed towards the anus. The flanged airbag tube 3 is filled with air, and the flanged airbag tube 3 prevents the hard air duct 1 from directly contacting the anus. The air duct 1 is pushed into the anus, pushing the anus to expand to both sides, and the flanged airbag tube 3 directly contacts the anus. During the entire process of pushing open the anus, the flanging 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 process of the air duct 1, the flanged airbag tube 3 will not produce relative sliding with the perianal area, so the anus will not be affected by friction. Similarly, during the retraction process of the air duct 1, the position of the perianal top sleeve 2 remains unchanged, and the air duct 1 moves outwards. The turned-out flanged airbag tube 3 begins to recover, and the turned-out length of the flanged airbag tube 3 gradually decreases. During the whole process, the flanged airbag tube 3 will not have relative sliding with the anus either.

[0034] Example 2:

[0035] Example 2 makes the following improvements to solve the problem that Example 1 adopts a non-sliding structure for inserting into the anus and realizes the sealing and fixation at the anus structure:

[0036] On the basis of Example 1, the improved structure is as follows: an outer closed inflation chamber 4 for buffering the perianal area, anal canal, and anal cavity is formed between the flanged airbag tube 3, the perianal top sleeve 2, and the air duct 1.

[0037] Improvement principle: Please refer to Figure 2 and Figure 5, an outer closed inflation chamber 4 is formed between the turned - out flanged airbag tube 3, the air guide tube 1, and the perianal top sleeve 2. An inner closed inflation chamber 5 is formed between the outer wall of the flanged airbag tube 3 and the inner wall of the air guide tube 1. During the extrusion process of the outer closed inflation chamber 4, it will be converted from a triangle to a curve. The curved outer closed inflation chamber 4 has a concave surface and two convex ends. The convex ends are respectively located at the top part of the inner closed inflation chamber 5 close to the air guide tube 1 and the surface part of the inner closed inflation chamber 5 close to the perianal top sleeve 2. Therefore, inflating the outer closed inflation chamber 4 with gas can cause the outer closed inflation chamber 4 to expand. After the outer closed inflation chamber 4 expands, the flanged airbag tube 3 undergoes elastic deformation and expands outward. The curved part of the outer wall of the outer closed inflation chamber 4 will also fit against the anal canal. Under the action of the air pressure in the outer closed inflation chamber 4, the sealing performance between the air guide tube 1 and the anus can be ensured.

[0038] Embodiment Three:

[0039] Since the inflation function can be achieved in Embodiment Two, only the air guide tube 1 needs to be externally connected to a gas supply and pressurization device. To increase applicability and be applicable to existing inflation devices and inflation tubes, the following improvements are made in Embodiment Three based on Embodiment Two:

[0040] An inner closed inflation chamber 5 is formed between the flanged airbag tube 3 and the inner wall of the perianal top sleeve 2.

[0041] Please refer to Figure 5 , the flanged airbag tube 3 is in contact with the top of the air guide tube 1 and is divided into two spaces: an outer closed inflation chamber 4 and an inner closed inflation chamber 5. When gas is introduced into the outer closed inflation chamber 4, the gas will also enter the inner closed inflation chamber 5. The inner closed inflation chamber 5 can only expand towards the center of the air guide tube 1. If an inflation tube is inserted into the air guide tube 1, the inflation tube can be clamped through the inner closed inflation chamber 5 to achieve sealing. At this time, the air guide tube 1, the perianal top sleeve 2, and the flanged airbag tube 3 are disposable kits and can be discarded. The inflation tube connected to the device does not come into contact with the human body, so the disinfection difficulty is greatly reduced. The overall convenience and hygiene of use are improved.

[0042] Embodiment Four:

[0043] Based on Embodiment Two, in order to prevent the air guide tube 1 from detaching from the anus, the following improvements are made in Embodiment Four: A guiding sleeve 21 is fixedly connected to the center of the perianal top sleeve 2. The air guide tube 1 is slidably connected inside the guiding sleeve 21, and a positioning ring 11 that fits against the guiding sleeve 21 is fixedly connected to the outer wall of the air guide tube 1.

[0044] Please refer to Figure 5, As can be seen from the above, if one wants to separate the air duct 1 from the anus, it is necessary to relatively slide the air duct 1 and the perianal top sleeve 2. After the guiding sleeve 21 fits with the positioning ring 11, the connection relationship between the positioning ring 11 and the guiding sleeve 21 can be established. The connection method is as follows:

[0045] Continuous threads of the same specification are provided on the surfaces of the positioning ring 11 and the guiding sleeve 21. A threaded sleeve is screwed into the positioning ring 11 and the guiding sleeve 21 to fix the positioning ring 11 and the guiding sleeve 21.

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

[0047] A buckle structure can be provided on the contact surface between the positioning ring 11 and the guiding sleeve 21. The buckle structure includes, but is not limited to, pin locking, wedge locking, etc. Pin locking can follow the telescopic locking method of an umbrella rod, and wedge locking can be formed by the cooperation of an elastic buckle and a grooved pin.

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

[0049] The supplementary description of the above embodiments is as follows:

[0050] Supplementary description of the sliding structure of the air duct 1 and the flanged airbag tube 3:

[0051] An arc surface 13 is provided at the top of the air duct 1. The arc surface 13 is slidably connected to the flanged part of the flanged airbag tube 3. During the process of the air duct 1 being inserted into the anus, although the air duct 1 does not slide with the anus, the air duct 1 and the flanged airbag tube 3 will have a sliding contact. Therefore, an arc surface 13 is provided at the top of the air duct 1. A Teflon film can be attached to the arc surface 13 or a lubricant can be added to promote the smooth sliding of the air duct 1 and the flanged airbag tube 3. And the lubricant only exists inside the outer closed inflatable chamber 4 and the inner closed inflatable chamber 5, so there will be no lubrication phenomenon or behavior around the anus.

[0052] Supplementary description of the sealing structure of the air duct 1 and the flanged airbag tube 3:

[0053] A sealing groove 12 is provided on the inner wall of the air duct 1. 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", and the flanged airbag tube 3 is slidably connected to the slot.

[0054] See also 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 slot 12. The L-shaped sliding sealing ring 31 and the sealing slot 12 are plugged into and matched to realize a labyrinth processing, thereby increasing the sealing of the connection and realizing the closed space of the outer closed inflation chamber 4 and the inner closed inflation chamber 5.

[0055] The inner wall of the bottom end of the flanged airbag tube 3 is fixedly connected with a hard support ring 32. The hard support ring 32 can prevent the bottom end of the flanged airbag tube 3 from expanding toward the center of the airway tube 1. The hard support ring 32 is more convenient for guiding the inflation tube to be inserted into the airway tube 1 and the inner closed inflation chamber 5.

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

[0057] See also Figure 5 When the diameter of the outer end of the cuffed airbag tube 3 is larger than the diameter of the bottom end of the cuffed airbag tube 3, the cuffed airbag tube 3 and the anal top sleeve 2 form a triangular area. After the outer closed air chamber 4 is inflated, the outer closed air chamber 4 is constrained by the sphincter, and the expansion points of the outer closed air chamber 4 are located at the upper and lower ends. Therefore, the convex areas formed at the upper and lower ends can just limit the outside and inside of the anus.

[0058] Further explanation:

[0059] The bottom surface of the perianal sleeve 2 can be provided with a hole or a pipe connected to the outer closed air chamber 4, and the pipe can inflate the outer closed air chamber 4 and the inner closed air chamber 5 through an external air supply mechanism. Secondly, there is gas inside the flanged airbag tube 3. If the flanged airbag tube 3 needs to be additionally inflated, an inflation pipe or hole can be provided on the bottom surface of the perianal sleeve 2. Since the end of the flanged airbag tube 3 also has a connection point with the perianal sleeve 2, the perianal sleeve 2 can be provided with a hole to satisfy the inflation of the outer closed air chamber 4 and the flanged airbag tube 3.

[0060] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A colon CT contrast examination inflation device, characterized in that: Comprising: An air guide tube (1), a perianal top sleeve (2), and a flanged airbag tube (3). The air guide tube (1) is slidably connected within the central hole of the perianal top sleeve (2). The bottom end of the flanged airbag tube (3) is slidably connected inside the air guide tube (1), and the top end of the flanged airbag tube (3) is turned outwards and fixedly connected to the surface of the perianal top sleeve (2). An outer closed inflation chamber (4) for buffering the perianal area, anal canal, and inside of the anus is formed between the flanged airbag tube (3), the perianal top sleeve (2), and the air guide tube (1), and an inner closed inflation chamber (5) is formed between the flanged airbag tube (3) and the inner wall of the perianal top sleeve (2).

2. The air inflation device for colon CT imaging examination according to claim 1, wherein: A guiding sleeve (21) is fixedly connected to the center of the perianal top sleeve (2), and the air guide tube (1) is slidably connected within the guiding sleeve (21).

3. The air inflation device for colon CT angiography according to claim 2, wherein: A positioning ring (11) that fits with the guiding sleeve (21) is fixedly connected to the outer wall of the air guide tube (1).

4. The air inflation device for colon CT imaging examination according to claim 1, characterized in that: An arc surface (13) is formed at the top of the air guide tube (1), and the arc surface (13) is slidably connected to the flanged part of the flanged airbag tube (3).

5. The colon CT contrast examination inflation device according to claim 1, characterized in that: A sealing groove (12) is formed on the inner wall of the air guide tube (1), and a sliding sealing ring (31) is slidably connected to the inner wall of the air guide tube (1). The sliding sealing ring (31) is fixedly connected to the bottom end of the flanged airbag tube (3).

6. The air inflation device for colon CT imaging examination according to claim 5, characterized in that: 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.

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

8. The air inflation device for colon CT imaging examination according to claim 1, characterized in that: The flanged airbag tube (3) is made of an elastic material, and the diameter of the turned-out 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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