Visual balloon dilator

Abstract

The invention provides a visible balloon dilator, which solves the problems of temporary retention of a balloon catheter and the like and comprises a drainage tube, a balloon is mounted at the end of the drainage tube and connected with an inflation tube, and expansion cavities arranged along the axial direction of the drainage tube are arranged in the balloon. An inflation channel and an on-off assembly for controlling the opening and closing amount of the inflation channel are arranged between the adjacent expansion cavities, the on-off assembly is communicated with a pneumatic pipe, and the inflation pipe and the pneumatic pipe are connected with an air pump assembly. The device has the advantages of good structural stability, convenience in operation and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of balloon dilators, and in particular relates to a visible balloon dilator. Background Art

[0002] The urethral balloon dilatation catheter is a medical device used to treat urethral stricture or other urethral diseases. It is usually made of highly elastic materials and can adapt to urethra of different sizes to ensure the comfort and safety of patients. When the catheter encounters obstruction, the top thin section first probes into the narrow urethra, and the balloon is filled with gas to radially expand the urethra to allow the catheter to pass smoothly, minimizing the damage to the urethral mucosa during the catheterization process and alleviating the pain of the patient. The urethral balloon dilatation catheter is divided into single-balloon and double-balloon types. The single-balloon catheter is used to dilate the lesion site of urethral stricture. Since it has only one balloon, it is relatively easy to slip off, and it is necessary to pay attention to the operating skills and select the appropriate catheter size. The double-balloon catheter is more stable than the single-balloon catheter. However, the above-mentioned existing balloon dilator needs to be maintained by an air pump during use, and it cannot be temporarily retained. In addition, due to the lack of visualization during use, the insertion depth cannot be accurately controlled.

[0003] In order to solve the shortcomings of the existing technology, people have conducted long-term exploration and proposed various solutions. For example, a Chinese patent document discloses a visual urethral dilation kit [202110952372.4], which includes a urethroscope, a guide wire, a balloon, a guide sheath, a balloon pressurizer, a urethral dilator and a pusher; the balloon has its own guide wire, and the urethroscope is provided with a channel for the guide wire to pass through. The balloon pressurizer and the balloon with its own guide wire together constitute a balloon dilator; the balloon pressurizer is connected to the rear end of the balloon's own guide wire and is connected to the balloon through the pressurization hole inside the guide wire; the aperture of the guide sheath is larger than the diameter of the guide wire, the urethral dilator is mounted on the front end of the guide sheath, and the pusher is connected to the rear end of the guide sheath and the two have the same diameter.

[0004] The above solution solves the visualization problem to a certain extent, but the solution still has many shortcomings, such as the inability to achieve temporary retention of the catheter. Summary of the invention

[0005] The purpose of the present invention is to provide a visual balloon dilator with reasonable design and capable of achieving temporary indwelling of a catheter in view of the above problems.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a visual balloon dilator, including a drainage tube, a balloon installed at the end of the drainage tube, the balloon is connected to an inflation tube, an expansion cavity arranged along the axial direction of the drainage tube is arranged inside the balloon, an inflation channel and an on-off component for controlling the opening and closing amount of the inflation channel are arranged between adjacent inflation cavities, the on-off component is connected to the pneumatic tube, and the inflation tube and the pneumatic tube are connected to the air pump component.

[0007] In the above-mentioned visual balloon dilator, the balloon includes a first expansion bladder and a second expansion bladder arranged axially at intervals along the drainage tube, and the inner sides of the first expansion bladder and the second expansion bladder are respectively provided with structural ribs arranged in a spiral shape and center symmetrically, and the spiral directions of the structural ribs of the first expansion bladder and the second expansion bladder are opposite.

[0008] In the above-mentioned visual balloon dilator, the on-off component includes a partition bag arranged between the first expansion bag and the second expansion bag, and a spiral deformation tube connected to the pneumatic tube is installed inside the partition bag. The deformation tube surrounds the circumference of the partition bag, and the deformation tube is connected to an elastic ring surrounding the circumference of the partition bag. The inflation channel is arranged between the deformation tube and the partition bag and expands with the expansion of the deformation tube.

[0009] In the above-mentioned visual balloon dilator, the deformable tube has a deformable sheet extending into the first expansion bladder and the second expansion bladder, the deformable sheet and the structural rib are arranged at intervals, and a deformable opening opposite to the inflation channel is left between the deformable sheet and the structural rib.

[0010] In the above-mentioned visual balloon dilator, the air pump assembly includes a pressure pump, the output end of the pressure pump is connected to an electric two-way valve, the first output end of the electric two-way valve is connected to the pneumatic tube, the second output end of the electric two-way valve is connected to the pneumatic tube, the first output end and the second output end of the electric two-way valve are respectively installed with air pressure sensors, the pressure pump, the electric two-way valve and the air pressure sensor are connected to a main control module, the main control module is connected to a control panel and a power supply module, and the main control module is connected to an audio and video warning module.

[0011] In the above-mentioned visual balloon dilator, a locking valve is respectively installed between the inflation tube and the pneumatic tube and the electric two-way valve, the locking valve has a locking cavity and a conical block movably installed in the locking cavity, an elastic reset part is installed between the conical block and the locking cavity, and the first output end and the second output end of the electric two-way valve respectively have a top column extending into the locking cavity and pressing against the conical block.

[0012] In the above-mentioned visual balloon dilator, the first output end and the second output end of the electric two-way valve have different port shapes or sizes, and the input end of the locking valve corresponds to the first output end and the second output end one by one.

[0013] In the above-mentioned visual balloon dilator, a guide wire and a pinhole camera installed at the end of the guide wire are slidably installed in the drainage tube, and the pinhole camera is connected to the image acquisition module.

[0014] In the above-mentioned visual balloon dilator, a protective head is provided at the end of the drainage tube, and the edge of the protective head is rounded.

[0015] In the above-mentioned visual balloon dilator, an indicator scale is arranged on the drainage tube.

[0016] Compared with the existing technology, the advantages of the present invention are: the interior of the balloon outside the drainage tube is divided into several relatively independent expansion chambers, and the opening and closing of each expansion chamber is controlled by the on-off component. When the air pump component is separated, the internal closedness is maintained to achieve the overall retention of the expander; the on-off component uses a pneumatic method to control whether the expansion chamber is connected, and the internal deformation tube and other structures have good self-locking sealing properties, and have a sealing effect even after the air supply is stopped; the air pump component integrates balloon expansion and expansion chamber isolation functions, without manual control, thereby improving operational convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 It is a structural schematic diagram of another perspective of the present invention;

[0019] Figure 3 It is a partial schematic diagram of the present invention;

[0020] Figure 4 is a structural cross-sectional view of the balloon of the present invention;

[0021] Figure 5 is a structural cross-sectional view of a locking valve of the present invention;

[0022] Figure 6 is a structural principle diagram of the air pump assembly of the present invention;

[0023] In the figure, drainage tube 1, guide wire 11, pinhole camera 12, image acquisition module 13, protective head 14, indicator scale 15, balloon 2, first expansion bladder 21, second expansion bladder 22, structural rib 23, expansion cavity 3, inflation channel 4, on-off assembly 5, partition bag 51, deformation tube 52, elastic ring 53, deformation sheet 54, deformation opening 55, pneumatic tube 6, inflation tube 7, air pump assembly 8, pressure pump 81, electric two-way valve 82, first output end 83, second output end 84, air pressure sensor 85, main control module 86, control panel 87, power supply module 88, sound and light warning module 89, locking valve 9, locking cavity 91, conical block 92, elastic reset member 93, top column 94. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] like Figure 1-6As shown, a visual balloon dilator is usually used for tracheal, blood vessel and urethral dilation, including a drainage tube 1 for guiding the flow of liquid, a balloon 2 is installed at the end of the drainage tube 1, and the balloon 2 is connected to an inflation tube 7. The inflation of the inflation tube 7 drives the balloon 2 to expand, squeeze and close. Different from the conventional balloon structure, the balloon 2 in this embodiment is provided with an expansion cavity 3 arranged along the axial direction of the drainage tube 1, and an inflation channel 4 and a switch assembly 5 for controlling the opening and closing amount of the inflation channel 4 are provided between adjacent expansion cavities 3. Multiple expansion cavities 3 are connected and inflated, thereby driving the overall expansion of the balloon 2. When the on-off assembly 5 is completely closed, each expansion cavity 3 is closed and independently maintains the expansion structure of the balloon 2. The on-off assembly 5 is connected to the pneumatic tube 6, and the inflation tube 7 and the pneumatic tube 6 are connected to the air pump assembly 8, and the air pump assembly 8 provides expansion force and closing force for the balloon 2.

[0026] Specifically, unlike the conventional single-cavity balloon structure, the balloon 2 in this embodiment includes a first expansion bladder 21 and a second expansion bladder 22 arranged axially at intervals along the drainage tube 1, and the expansion cavity 3 is arranged axially along the drainage tube 1. The first expansion bladder 21 and the second expansion bladder 22 are respectively provided with structural ribs 23 arranged in a spiral shape and center symmetry on the inner side, and the spiral directions of the structural ribs 23 of the first expansion bladder 21 and the second expansion bladder 22 are opposite. The structural ribs 23 maintain the internal cavity structure of the balloon 2. When the balloon 2 is in a contracted state, the internal structural ribs 23 guide the balloon 2 to contract in a spiral shape to ensure that its contraction volume is minimized.

[0027] In depth, multiple expansion chambers 3 are kept in series when the balloon 2 is inflated, and the on-off assembly 5 is arranged at the intersection of the expansion chambers 3. The on-off assembly 5 includes a partition sac 51 arranged between the first expansion sac 21 and the second expansion sac 22. The partition sac 51 is respectively installed with a spiral deformation tube 52 connected to the pneumatic tube 6. The deformation tube 52 surrounds the partition sac 51 circumferentially. The deformation tube 52 is connected to an elastic ring 53 surrounding the partition sac 51 circumferentially. The inflation channel 4 is arranged between the deformation tube 52 and the partition sac 51 and expands with the expansion of the deformation tube 52. The partition sac 51 is hidden inside the balloon 2 as a whole and close to the drainage tube 1. When the deformation tube 52 is inflated, its spiral structure expands to form an inflation channel 4 inside the partition sac 51, so that the adjacent expansion chambers 3 are connected and the balloon 2 is evenly inflated as a whole.

[0028] Furthermore, in order to ensure the sealing performance of the partition bladder 51 in the contracted state, the deformable tube 52 has a deformable sheet 54 extending into the first expansion bladder 21 and the second expansion bladder 22. The deformable sheet 54 is arranged at intervals from the structural rib 23, and a deformable opening 55 opposite to the inflation channel 4 is left between the deformable sheet 54 and the structural rib 23. The deformable sheet 54 is partially fitted with the structural rib 23, and since it is made of elastic materials such as polyurethane, it has a good fit and close fit, and the micro-negative pressure environment formed can improve the sealing effect of the partition bladder 51.

[0029] Furthermore, unlike the existing manual inflation operation, this embodiment uses the inflation tube 7 and the pneumatic tube 6, which requires frequent switching of inflation and deflation, so an air pump assembly 8 is used for automatic control. The air pump assembly 8 includes a pressure pump 81, the output end of the pressure pump 81 is connected to an electric two-way valve 82, the first output end 83 of the electric two-way valve 82 is connected to the pneumatic tube 6, the second output end 84 of the electric two-way valve 82 is connected to the pneumatic tube 6, the first output end 83 and the second output end 84 of the electric two-way valve 82 are respectively installed with an air pressure sensor 85, the pressure pump 81, the electric two-way valve 82 and the air pressure sensor 85 are connected to the main control module 86, the main control module 86 is connected to a control panel 87 and a power supply module 88, and the main control module 86 is connected to an audio and video warning module 89.

[0030] When the expander is in use, the electric two-way valve 82 in the air pump assembly 8 is switched to the second output end 84, and the pressure pump 81 is started to inflate the pneumatic tube 6 and the deformation tube 52, so that the partition bag 51 expands to form an inflation channel 4. The pressure pump 81 then switches to the first output end 83 and inflates the first inflation bag 21 and the second inflation bag 22. At this time, it is inconvenient for the partition bag 51 to maintain the inflation channel 4. The opening and closing amount of the inflation channel 4 is adjusted by controlling the expansion amount of the partition bag 51 to avoid excessive inflation of the balloon 2 due to too fast air intake. The air pressure sensor 85 also plays a negative feedback regulation role to improve operational safety.

[0031] In addition, a locking valve 9 is installed between the inflation tube 7 and the pneumatic tube 6 and the electric two-way valve 82. The locking valve 9 has a locking cavity 91 and a conical block 92 movably installed in the locking cavity 91. An elastic reset member 93 is installed between the conical block 92 and the locking cavity 91. The first output end 83 and the second output end 84 of the electric two-way valve 82 respectively have a top column 94 extending into the locking cavity 91 and pressing against the conical block 92. When the inflation tube 7 and the pneumatic tube 6 are separated from the air pump assembly 8, the pneumatic tube 6 and the inflation tube 7 are automatically closed and maintain the expansion state of the balloon 2. The pressure can be released by manually pushing the conical block 92 without always connecting the air pump, thereby leaving enough operating space.

[0032] At the same time, in order to ensure the connection accuracy of the inflation tube 7 and the pneumatic tube 6, the first output end 83 and the second output end 84 of the electric two-way valve 82 have different port shapes or sizes, and the input end of the locking valve 9 corresponds to the first output end 83 and the second output end 84. Under the control of the main control module 86, the electric two-way valve 82 drives the first output end 83 and the second output end 84 to be alternately connected, thereby gradually increasing the expansion amount of the balloon 2, and at the same time, each internal expansion cavity 3 has enough time to guide the balloon 2 to fit the inner wall.

[0033] It can be seen that a guide wire 11 and a pinhole camera 12 installed at the end of the guide wire 11 are slidably installed in the drainage tube 1, and the pinhole camera 12 is connected to the image acquisition module 13. The pinhole camera 12 collects image information and the image acquisition module 13 performs analog-to-digital conversion to ensure visualization during the operation of the dilator.

[0034] Obviously, a protective head 14 is provided at the end of the drainage tube 1, and the edge of the protective head 14 is rounded. The protective head 14 mainly guides the extension direction of the drainage tube 1 and covers the end of the drainage tube 1 to avoid secondary damage to the human body.

[0035] Preferably, an indicator scale 15 is provided on the drainage tube 1 to facilitate the judgment of the depth of the balloon 2 , and a radioactive mark can be used as needed to further improve the indication effect of the insertion depth of the drainage tube 1 .

[0036] To sum up, the principle of this embodiment is that the interior of the balloon 2 is divided into multiple expansion chambers 3 arranged axially along the drainage tube 1, and the connectivity of adjacent expansion chambers 3 is controlled by the on-off assembly 5. Under the action of the air pump assembly 8, the expansion chambers 3 are evenly inflated and drive the balloon 2 to expand.

[0037] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0038] Although the present invention uses the terms drainage tube 1, guide wire 11, pinhole camera 12, image acquisition module 13, protective head 14, indicator scale 15, balloon 2, first expansion balloon 21, second expansion balloon 22, structural rib 23, expansion cavity 3, inflation channel 4, on-off assembly 5, partition sac 51, deformation tube 52, elastic ring 53, deformation sheet 54, deformation opening 55, pneumatic tube 6, inflation tube 7, air pump assembly 8, pressure pump 81, electric two-way valve 82, first output end 83, second output end 84, air pressure sensor 85, main control module 86, control panel 87, power supply module 88, sound and light warning module 89, locking valve 9, locking cavity 91, conical block 92, elastic reset member 93, top column 94, etc., the possibility of using other terms is not excluded. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A visual balloon dilator, comprising a drainage tube (1), a balloon (2) installed at the end of the drainage tube (1), and the balloon (2) connected to an inflation tube (7), characterized in that: The balloon (2) is provided with an expansion chamber (3) arranged axially along the drainage tube (1), and an inflation channel (4) and an on-off assembly (5) for controlling the opening and closing amount of the inflation channel (4) are provided between adjacent inflation chambers (3). The on-off assembly (5) is connected to the pneumatic tube (6), and the inflation tube (7) and the pneumatic tube (6) are connected to the air pump assembly (8).

2. A visual balloon dilator according to claim 1, characterized in that: The balloon (2) comprises a first expansion sac (21) and a second expansion sac (22) which are arranged axially with intervals along the drainage tube (1); the first expansion sac (21) and the second expansion sac (22) are respectively provided with structural ribs (23) which are arranged centrally and symmetrically in a spiral shape on the inner side; the structural ribs (23) of the first expansion sac (21) and the second expansion sac (22) have opposite spiral directions.

3. A visual balloon dilator according to claim 2, characterized in that: The on-off assembly (5) comprises a partition bag (51) arranged between a first expansion bag (21) and a second expansion bag (22); a spirally shaped deformation tube (52) connected to a pneumatic tube (6) is installed inside the partition bag (51); the deformation tube (52) surrounds the partition bag (51) circumferentially; the deformation tube (52) is connected to an elastic ring (53) surrounding the partition bag (51) circumferentially; and the inflation channel (4) is arranged between the deformation tube (52) and the partition bag (51) and expands as the deformation tube (52) expands.

4. A visual balloon dilator according to claim 3, characterized in that: The deformable tube (52) has a deformable sheet (54) extending into the first expansion bladder (21) and the second expansion bladder (22); the deformable sheet (54) and the structural rib (23) are arranged at intervals; and a deformable opening (55) opposite to the inflation channel (4) is left between the deformable sheet (54) and the structural rib (23).

5. The visual balloon dilator according to claim 1, characterized in that: The air pump assembly (8) comprises a pressure pump (81), the output end of the pressure pump (81) is connected to an electric two-way valve (82), the first output end (83) of the electric two-way valve (82) is in communication with the pneumatic tube (6), the second output end (84) of the electric two-way valve (82) is in communication with the pneumatic tube (6), the first output end (83) and the second output end (84) of the electric two-way valve (82) are respectively provided with an air pressure sensor (85), the pressure pump (81), the electric two-way valve (82) and the air pressure sensor (85) are connected to a main control module (86), the main control module (86) is connected to a control panel (87) and a power supply module (88), and the main control module (86) is connected to an audio and video warning module (89).

6. A visual balloon dilator according to claim 5, characterized in that: A locking valve (9) is installed between the inflation tube (7) and the pneumatic tube (6) and the electric two-way valve (82), respectively. The locking valve (9) comprises a locking cavity (91) and a conical block (92) movably installed in the locking cavity (91), an elastic reset member (93) is installed between the conical block (92) and the locking cavity (91), and the first output end (83) and the second output end (84) of the electric two-way valve (82) respectively comprise a top column (94) extending into the locking cavity (91) and pressing against the conical block (92).

7. A visual balloon dilator according to claim 6, characterized in that: The first output end (83) and the second output end (84) of the electric two-way valve (82) have different port shapes or sizes, and the input end of the locking valve (9) corresponds one-to-one to the first output end (83) and the second output end (84).

8. The visual balloon dilator according to claim 1, characterized in that: A guide wire (11) and a pinhole camera (12) installed at the end of the guide wire (11) are slidably installed in the drainage tube (1), and the pinhole camera (12) is connected to an image acquisition module (13).

9. The visual balloon dilator according to claim 1, characterized in that: A protective head (14) is provided at the end of the drainage tube (1), and the edges of the protective head (14) are chamfered.

10. The visual balloon dilator according to claim 1, characterized in that: The drainage tube (1) is provided with an indicating scale (15).

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