Visual dilator

Abstract

The utility model relates to the technical field of medical instruments, and discloses a visual dilator which comprises a catheter, an endoscope, a dilation piece and a plurality of connector pieces. The guide pipe is provided with a first mounting hole and a plurality of first channels; the endoscope comprises a lens part and a connecting part; the dilation piece comprises a connecting tube and a plurality of balloon tubes, the inner wall of the connecting tube is in sealed connection with the outer wall of the catheter, a dilation cavity is defined between the inner wall of the balloon tube and the outer wall of the catheter, the number of the balloon tubes is multiple, and every two adjacent balloon tubes are connected through the connecting tube; one interface piece is communicated with one expansion cavity through one first channel; according to the visual dilator, through the connecting pipe, the multiple balloon pipes, the multiple first channels and the multiple connector pieces, the dilation length can be correspondingly adjusted according to different conditions of different patients when the visual dilator is used, and the matching performance is good.

Description

Technical Field

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

[0002] Visual dilators are used in many surgeries such as urethral dilation surgery, cardiovascular medicine surgery, and neurosurgery. Taking urethral dilation surgery as an example, a visual urethral dilator disclosed in the utility model patent with the publication number CN208893440U includes a catheter channel for inserting a balloon catheter. An endoscope is fixed at a position on the outer side of the catheter channel close to the catheter outlet. A viewing port for providing a channel for the endoscope to view is provided at the lower end of the catheter outlet of the catheter channel. Although this patent can observe the changes in the urethra during urethral dilation and prevent adverse sequelae such as over-dilation, this patent only provides one balloon for dilation, and the length of this balloon is fixed, which will cause the patent to be unable to adjust the dilation length according to the different conditions of different patients during use, and the matching performance is poor. Similarly, there are also problems with poor matching performance of visual dilators in other surgeries. Summary of the Utility Model

[0003] Aiming to solve at least one of the technical problems existing in the prior art, the utility model provides a visual dilator, which can adjust the dilation length according to the different conditions of different patients during use, and has good matching performance.

[0004] To achieve the above object, the utility model provides a visual dilator having a first direction. The visual dilator includes a catheter, an endoscope, a dilator, and a plurality of interface members. The catheter is provided with a first installation hole penetrating along the first direction, and a plurality of first channels are provided inside the catheter. The endoscope includes a lens portion and a connecting portion. The connecting portion penetrates through the first installation hole along the first direction, and the lens portion is connected to one end of the connecting portion in the first direction. The dilator is sleeved on one end of the catheter close to the lens portion. The dilator includes a connecting pipe and a balloon pipe. The inner wall of the connecting pipe is hermetically connected to the outer wall of the catheter. An expansion cavity is formed by enclosing between the inner wall of the balloon pipe and the outer wall of the catheter. The number of the balloon pipes is multiple, and the multiple balloon pipes are sequentially distributed along the first direction, and adjacent two balloon pipes are connected by the connecting pipe. The interface member is connected to one end of the catheter away from the lens portion in the first direction, and one interface member is communicated with one expansion cavity through one first channel.

[0005] In some embodiments, along the first direction, the length of the balloon pipe is a, satisfying: 20 mm ≤ a ≤ 100 mm.

[0006] In some embodiments, along the first direction, the length of the connecting tube is b, satisfying: 0.2 mm ≤ b ≤ 20 mm.

[0007] In some embodiments, the diameter of the balloon tube is c, satisfying: 2 mm ≤ c ≤ 8.5 mm.

[0008] In some embodiments, an opening communicating with the first channel is formed at one end of the catheter close to the interface member in the first direction, the interface member communicates with the first channel through the opening, a connection hole communicating with the first channel is formed on the side wall of the catheter, and the dilation cavity communicates with the first channel through the connection hole.

[0009] In some embodiments, a first scale is provided on the outer wall of the dilator.

[0010] In some embodiments, a second scale is provided on the outer wall of the catheter.

[0011] In some embodiments, the endoscope further includes a control unit, and the control unit is connected to one end of the connection part away from the lens part in the first direction.

[0012] In some embodiments, the visual dilator further includes an adapter, the adapter is connected to one end of the catheter away from the lens part, and a plurality of the interface members are connected to the catheter through the adapter.

[0013] In some embodiments, a plurality of second channels are formed inside the catheter, and one of the interface members also communicates with one of the dilation cavities through one of the second channels.

[0014] Compared with the prior art, the visual dilator provided by the embodiment of the present utility model has the following beneficial effects: By adopting a connecting tube, a plurality of balloon tubes, a plurality of first channels, and a plurality of interface parts, when a shorter dilation length of the visual dilator is required, one interface part can be used to pressurize one balloon tube through one first channel to expand the balloon tube. Since adjacent two balloon tubes are connected by the connecting tube and the connecting tube is hermetically connected to the catheter, the expansion of this balloon tube will not cause the expansion of other balloon tubes, thereby achieving the purpose of enabling the visual dilator to have a shorter dilation length; when a longer dilation length of the visual dilator is required, a plurality of interface parts can be used to pressurize a plurality of balloon tubes respectively through a plurality of first channels to expand the plurality of balloon tubes. Since the plurality of balloon tubes are distributed along the first direction, the expansion of the plurality of balloon tubes can achieve the purpose of enabling the visual dilator to have a longer dilation length; Therefore, the visual dilator provided by the present utility model can adjust the dilation length according to different situations of different patients during use through the connecting tube, the plurality of balloon tubes, the plurality of first channels, and the plurality of interface parts, and has good matching. Description of the Drawings

[0015] Figure 1 is a schematic structural view of a visual dilator provided by Embodiment 1 of the present utility model;

[0016] Figure 2 is a top view of a visual dilator provided by Embodiment 1 of the present utility model;

[0017] Figure 3 is a cross-sectional view of a visual dilator provided by Embodiment 1 of the present utility model;

[0018] Figure 4 is Figure 3 an enlarged view of part D of

[0019] Figure 5 is Figure 3 an enlarged view of part E of

[0020] Figure 6 is a schematic structural view of a catheter provided by Embodiment 1 of the present utility model;

[0021] Figure 7 is a side view of a catheter provided by Embodiment 1 of the present utility model;

[0022] Figure 8 is a cross-sectional view of an expansion member provided by Embodiment 1 of the present utility model;

[0023] Figure 9 is a side view of a catheter provided by Embodiment 2 of the present utility model.

[0024] In the figure, 1 is a catheter; 11 is a first mounting hole; 12 is a first channel; 13 is a second channel; 14 is a second scale; 121 is an opening; 122 is a connection hole;

[0025] 2 is an endoscope; 21 is a lens part; 22 is a connection part; 23 is a control part;

[0026] 3 is an expander; 31 is a connecting tube; 32 is a balloon tube; 33 is a first scale; 321 is an expansion cavity;

[0027] 4 is an interface part;

[0028] 5 is an adapter; 51 is an adapter hole; 52 is a second mounting hole;

[0029] X is the first direction. Detailed implementation manners

[0030] The following will further describe in detail the specific implementation manners of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0031] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model.

[0032] The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0033] In the present utility model, unless otherwise clearly specified and defined, the terms "mount", "connect", "couple", "fix", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may also include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0035] The visual dilator provided by the present utility model can be applied to any field requiring a visual dilator, such as urethral dilation surgery, cardiovascular internal medicine surgery, neurosurgery, etc., and this application is not limited. Hereinafter, the structure of the dilator of this application will be described by taking urethral dilation surgery as an example.

[0036] Embodiment 1

[0037] As Figures 1-8 shown, a visual dilator provided by Embodiment 1 of the present utility model has a first direction X. The visual dilator includes a catheter 1, an endoscope 2, a dilating member 3 and a plurality of interface members 4; the catheter 1 is provided with a first mounting hole 11 penetrating along the first direction X, and a plurality of first channels 12 are provided inside the catheter 1; the endoscope 2 includes a lens portion 21 and a connecting portion 22, the connecting portion 22 is disposed in the first mounting hole 11 along the first direction X, and the lens portion 21 is connected to one end of the connecting portion 22 in the first direction X; the dilating member 3 is sleeved on one end of the catheter 1 close to the lens portion 21, the dilating member 3 includes a connecting tube 31 and a balloon tube 32, the inner wall of the connecting tube 31 is hermetically connected to the outer wall of the catheter 1, and an expansion cavity 321 is formed by enclosing between the inner wall of the balloon tube 32 and the outer wall of the catheter 1. The number of the balloon tubes 32 is multiple, and the multiple balloon tubes 32 are sequentially distributed along the first direction X, and adjacent two balloon tubes 32 are connected by the connecting tube 31; the interface member 4 is connected to one end of the catheter 1 away from the lens portion 21 in the first direction X, and one interface member 4 is communicated with one expansion cavity 321 through one first channel 12.

[0038] Based on this technical solution, the endoscope 2 can help the doctor observe the changes inside the urethra during the urethral dilation process, preventing adverse sequelae such as over-dilation. By adopting the connecting tube 31, multiple balloon tubes 32, multiple first channels 12 and multiple interface parts 4, when a shorter dilation length of the visual dilator is required, one interface part 4 can be used to pressurize one balloon tube 32 through one first channel 12 to expand the balloon tube 32. Since adjacent two balloon tubes 32 are connected by the connecting tube 31 and the connecting tube 31 is hermetically connected to the catheter 1, the expansion of this balloon tube 32 will not cause the expansion of other balloon tubes 32, thus achieving the purpose of making the visual dilator have a shorter dilation length; when a longer dilation length of the visual dilator is required, multiple interface parts 4 can be used to pressurize multiple balloon tubes 32 through multiple first channels 12 respectively to expand the multiple balloon tubes 32. Since the multiple balloon tubes 32 are distributed along the first direction X, the expansion of the multiple balloon tubes 32 can achieve the purpose of making the visual dilator have a longer dilation length; therefore, the visual dilator provided by the present utility model can adjust the dilation length according to different conditions of different patients during use through the connecting tube 31, multiple balloon tubes 32, multiple first channels 12 and multiple interface parts 4, and has a better matching performance.

[0039] It should be noted that the connecting part 22 can be any component in the prior art such as a wire, a signal line, an optical fiber, etc. that can provide power transmission and signal transmission for the lens part 21, and will not be elaborated here.

[0040] The first direction X is the axial direction of the catheter 1, that is, the first direction X is the length direction of the catheter 1.

[0041] In this embodiment, the number of the balloon tubes 32 is three. Three expansion cavities 321 are formed between the three balloon tubes 32 and the catheter. The number of the interface parts 4 is three, and the three interface parts 4 are respectively communicated with the three expansion cavities 321.

[0042] In some other embodiments, the number of the balloon tubes 32 can also be any number such as two, four, five, six, seven, etc., and is not limited herein.

[0043] In this embodiment, the connecting tube 31 is sleeved on the outer wall of the catheter 1 by an interference fit manner to realize the sealing connection between the inner wall of the connecting tube 31 and the outer wall of the catheter 1.

[0044] In some other ways, it is also possible to achieve a sealed connection between the inner wall of the connecting pipe 31 and the outer wall of the catheter 1 by providing a seal between the inner wall of the connecting pipe 31 and the outer wall of the catheter 1, or by sleeving a sealing ring on the outer wall of the connecting pipe 31 to make the inner wall of the connecting pipe 31 and the outer wall of the catheter 1 in close contact through the clamping force of the sealing ring to achieve a sealed connection between the inner wall of the connecting pipe 31 and the outer wall of the catheter 1. Without departing from the technical principle of the present invention, any method of achieving a sealed connection between the inner wall of the connecting pipe 31 and the outer wall of the catheter 1 should also be regarded as the protection scope of the present invention.

[0045] Refer to Figures 1-3 , the endoscope 2 provided in the first embodiment of the present invention further includes a control unit 23, and the control unit 23 is connected to one end of the connecting portion 22 away from the lens portion 21 in the first direction X.

[0046] The control unit 23 may be any component in the prior art such as a power supply, a controller, etc. that can provide power and signals for the lens portion 21, and will not be elaborated here.

[0047] Refer to Figure 2 , along the first direction X, the length of the balloon tube 32 is a, satisfying: 20 mm ≤ a ≤ 100 mm.

[0048] In this embodiment, a = 65 mm.

[0049] In some other embodiments, a may also be any value such as 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm, 50 mm, 55 mm, 60 mm, 70 mm, 75 mm, 80 mm, 85 mm, 90 mm, 95 mm, 100 mm, etc. that satisfies 20 mm ≤ a ≤ 100 mm, and will not be limited here.

[0050] It should be noted that the lengths a of any two balloon tubes 32 in the first direction X may be equal or not equal, and will not be limited here.

[0051] Along the first direction X, the length of the connecting pipe 31 is b, satisfying: 0.2 mm ≤ b ≤ 20 mm.

[0052] It should be noted that the lengths b of any two connecting pipes in the first direction X may be equal or not equal, and will not be limited here.

[0053] Optionally, b can also be 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, 1.5 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm or any other value that satisfies 0.2 mm ≤ a ≤ 20 mm, which is not limited herein.

[0054] In this embodiment, the total length of the dilator 3 in the first direction X is 210 mm.

[0055] Refer to Figure 1 , Figure 2 and Figure 6 As shown in, the outer wall of the dilator 3 provided in the first embodiment of the present utility model has a first scale 33. The first scale 33 facilitates the doctor to understand the total length of the dilator 3, the length of the balloon tube 32, and the length of the connecting tube 31, which helps the doctor to better adjust the dilation length of the visual dilator.

[0056] The outer wall of the catheter 1 has a second scale 14. The second scale 14 facilitates the doctor to understand the length of the catheter 1. In this embodiment, the values of the first scale 33 on the outer wall of the dilator 3 and the values of the second scale 14 on the catheter 1 are continuous.

[0057] Refer to Figures 1-6 As shown in, the visual dilator provided in the embodiment of the present utility model further includes an adapter 5, which is connected to one end of the catheter 1 away from the lens part 21, and a plurality of interface parts 4 are connected to the catheter 1 through the adapter 5. The adapter 5 facilitates the assembly between the catheter 1 and the plurality of interface parts 4.

[0058] The adapter 5 is provided with a plurality of through holes 51 penetrating along the first direction X, and the plurality of interface parts 4 are respectively connected to the adapter 5 through the plurality of through holes 51, and the interface part 4 communicates with the first channel 12 through the through hole 51. The adapter 5 is provided with a second mounting hole 52 penetrating along the first direction X in sequence, and the connecting part 22 penetrates through the second mounting hole 52 and the first mounting hole 11 along the first direction X in sequence.

[0059] Refer to Figures 3-7 As shown in, one end of the catheter 1 provided in the embodiment of the present utility model near the interface part 4 in the first direction X is provided with an opening 121 communicating with the first channel 12, the interface part 4 communicates with the first channel 12 through the opening 121, the side wall of the catheter 1 is provided with a connection hole 122 communicating with the first channel 12, and the dilation cavity 321 communicates with the first channel 12 through the connection hole 122.

[0060] Refer to Figure 8, the diameter of the balloon tube 32 is c, satisfying: 2mm ≤ c ≤ 8.5mm.

[0061] It should be noted that the diameter of the balloon tube 32 referred to in the present utility model is the diameter of the balloon tube 32 when it is not expanded (i.e., when the balloon tube 32 is not bulged).

[0062] In this embodiment, the diameter c of the balloon tube 32 is 4mm, that is, when the balloon tube 32 is not expanded (i.e., when the balloon tube 32 is not bulged), it is 4mm, and when the balloon tube 32 is expanded (i.e., when the balloon tube 32 is bulged), it is 8mm.

[0063] Optionally, the diameter c of the balloon tube 32 can be any value that satisfies 2mm ≤ c ≤ 8.5mm, such as 2mm, 2.5mm, 3mm, 3.5mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm, etc., and is not limited herein.

[0064] Embodiment Two

[0065] Refer to Figure 9 , different from Embodiment One, a plurality of second channels 13 are provided inside the catheter 1 of the visual dilator provided in Embodiment Two, and an interface member 4 is also communicated with an expansion cavity 321 through a second channel 13.

[0066] The way that the interface member 4 is communicated with the expansion cavity 321 through the second channel 13 is similar to the way that the interface member 4 is communicated with the expansion cavity 321 through the first channel 12, and will not be elaborated herein.

[0067] In some other embodiments, an interface member 4 can also be communicated with an expansion cavity 321 through any number of channels such as a third channel, a fourth channel, a fifth channel, etc., and is not limited herein.

[0068] The above are only the preferred embodiments of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and replacements can still be made, and these improvements and replacements should also be regarded as the protection scope of the present utility model.

Claims

1. A visual dilator having a first direction (X), characterized in that: include: A conduit (1), the conduit (1) being provided with a first mounting hole (11) penetrating along the first direction (X), and a plurality of first channels (12) being provided inside the conduit (1); An endoscope (2), the endoscope (2) comprising a lens portion (21) and a connecting portion (22), the connecting portion (22) being arranged along the first direction (X) through the first mounting hole (11), the lens portion (21) being connected to one end of the connecting portion (22) in the first direction (X); an expansion piece (3), the expansion piece (3) being sleeved on one end of the catheter (1) close to the lens head (21), the expansion piece (3) comprising a connecting tube (31) and a balloon tube (32), the inner wall of the connecting tube (31) being sealedly connected to the outer wall of the catheter (1), an expansion cavity (321) being enclosed between the inner wall of the balloon tube (32) and the outer wall of the catheter (1), the number of the balloon tubes (32) being multiple, the multiple balloon tubes (32) being distributed in sequence along the first direction (X), and two adjacent balloon tubes (32) being connected via the connecting tube (31); A plurality of interface components (4), wherein the interface components (4) are connected to one end of the catheter (1) in the first direction (X) away from the lens head (21), and one of the interface components (4) is connected to one of the expansion chambers (321) via one of the first channels (12).

2. The visual dilator according to claim 1, characterized in that: Along the first direction (X), the length of the balloon tube (32) is a, satisfying: 20 mm ≤ a ≤ 100 mm.

3. The visual dilator according to claim 2, characterized in that: Along the first direction (X), the length of the connecting pipe (31) is b, satisfying: 0.2 mm ≤ b ≤ 20 mm.

4. The visual dilator according to claim 1, characterized in that: The diameter of the balloon tube (32) is c, which satisfies: 2mm≤c≤8.5mm.

5. The visual dilator according to claim 1, characterized in that: An opening (121) connected to the first channel (12) is provided at one end of the catheter (1) close to the interface member (4) in the first direction (X); the interface member (4) is connected to the first channel (12) via the opening (121); a connecting hole (122) connected to the first channel (12) is provided on a side wall of the catheter (1); and the expansion cavity (321) is connected to the first channel (12) via the connecting hole (122).

6. The visual dilator according to claim 1, characterized in that: The outer wall of the expansion piece (3) is provided with a first scale (33).

7. The visual dilator according to claim 6, characterized in that: The outer wall of the catheter (1) is provided with a second scale (14).

8. The visual dilator according to claim 1, characterized in that: The endoscope (2) further comprises a control unit (23), wherein the control unit (23) is connected to an end of the connection unit (22) away from the lens unit (21) in the first direction (X).

9. The visual dilator according to claim 1, characterized in that: It also comprises an adapter (5), the adapter (5) being connected to an end of the catheter (1) away from the lens head (21), and a plurality of the interface components (4) being connected to the catheter (1) via the adapter (5).

10. The visual dilator according to any one of claims 1 to 9, characterized in that: A plurality of second channels (13) are provided inside the catheter (1), and one of the interface components (4) is also connected to one of the expansion chambers (321) via one of the second channels (13).

Images