A catheter device

Abstract

This application discloses a catheter device, relating to the field of medical device technology. The catheter device includes a catheter, a balloon, a pre-inflated module, and a visual conduit. The catheter has independent inflation chambers and a visual chamber; the balloon is located at the distal end of the catheter and communicates with the inflation chambers. The balloon is used to expand the area to be treated after inflation; the pre-inflated module includes a pre-inflated conduit and a pre-inflated assembly. The pre-inflated conduit is located at the proximal end of the catheter and communicates with the inflation chambers. The pre-inflated assembly is connected to the proximal end of the pre-inflated conduit and is used for pre-inflating with gas; the visual conduit is located at the proximal end of the catheter and communicates with the visual chambers. The visual conduit is used to insert a visual probe. The above-mentioned catheter device not only simplifies the inflation structure and facilitates clinical operation, but also reduces the amount of consumables used and lowers costs. Furthermore, the visual probe provides guidance during balloon expansion, further reducing the difficulty of actual operation.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a catheter device. Background Technology

[0002] Currently, during ureterolithotomy, if a narrow area is found in the ureter, it will be dilated using a dilator before treatment.

[0003] Currently, commonly used ureteral balloon dilation devices on the market often have an anti-backflow structure inside the inflation catheter to prevent gas backflow during balloon inflation. This results in a complex inflation structure. In addition, considering that the ureter and urethra are curved and the treatment sites are mostly narrow areas, the specific narrow location is often not visible during balloon dilation, which increases the difficulty of actual operation and makes it difficult to insert the device into the ureter. Utility Model Content

[0004] The purpose of this application is to provide a catheter device that solves the problem that traditional catheter devices are difficult to insert into ureteral strictures.

[0005] To achieve the above objectives, this application provides a catheter device, comprising:

[0006] The catheter has independent air chambers and a visual chamber;

[0007] The balloon is placed at the distal end of the catheter and communicates with the distal end of the inflation chamber;

[0008] The pre-inflated module includes a pre-inflated pipe and a pre-inflated assembly. The pre-inflated pipe is located at the proximal end of the conduit and communicates with the proximal end of the inflation chamber. The pre-inflated assembly is connected to the proximal end of the pre-inflated pipe and is used for pre-inflating gas.

[0009] A visual conduit, located at the proximal end of the catheter, connects to the visual cavity and is used to insert a visual probe.

[0010] In some embodiments, the pre-inflated assembly includes:

[0011] The first pipe connects to the proximal end of the pre-inflated pipe;

[0012] A pre-inflated airbag, located on the first pipe, is used to contain gas at a certain pressure;

[0013] The outer shell is located outside the pre-inflated airbag;

[0014] An on / off valve is installed on the first pipe and located between the pre-inflated airbag and the pre-inflated pipe, and is used to control the opening and closing of the first pipe.

[0015] In some embodiments, the on / off valve includes:

[0016] The valve body has an internal cavity that communicates with the first pipe;

[0017] The operating lever has a first position and a second position, and is configured to open the valve body in the first position and close the valve body in the second position. The operating lever is provided with an operating head.

[0018] An elastic element, located between the valve body and the operating head, is used to provide an elastic force to the operating lever so that the operating lever tends to move from the first position to the second position.

[0019] In some embodiments, the conduit device further includes an inflation / deflation assembly, which is arranged in parallel with the pre-inflation assembly at the proximal end of the pre-inflation conduit.

[0020] In some embodiments, the proximal end of the pre-inflated pipe is provided with a connector, and the conduit device further includes a connector seat. One end of the connector seat is provided with a first connector hole, and the connector head is inserted into the first connector hole. The other end of the connector seat is provided with two second connector holes, and the inflation / deflation assembly and the pre-inflated assembly are respectively inserted into the two second connector holes.

[0021] In some embodiments, the inflation / deflation assembly includes:

[0022] The second pipe connects to the proximal end of the pre-inflated pipe;

[0023] An indicator balloon, located on the second conduit, is used to display the pressure inside the balloon.

[0024] In some embodiments, both the inflation / deflation assembly and the pre-inflation assembly are provided with a one-way valve at their proximal ends.

[0025] In some embodiments, the catheter further has a drainage cavity, and the catheter device further includes a drainage conduit located at the proximal end of the catheter and communicating with the drainage cavity. The drainage conduit is used for drainage and flushing of the treatment site on the human body.

[0026] The inflation chamber and the visual chamber are respectively located on both sides of the drainage chamber along the first direction. The outer walls of both sides of the drainage chamber along the first direction are arc-shaped. The cross-sectional area of ​​the drainage chamber is larger than the cross-sectional area of ​​the inflation chamber or the visual chamber. The dimensions of the two ends of the drainage chamber along the second direction perpendicular to the first direction are larger than the dimensions of the central part of the drainage chamber.

[0027] In some embodiments, the catheter device further includes a fixing member, which is fixedly disposed at the proximal end of the catheter, and the distal ends of the pre-inflated conduit, the visual conduit, and the drainage conduit are fixed within the fixing member.

[0028] In some embodiments, the distal end of the catheter is provided with a radiopaque component.

[0029] Compared to the aforementioned background technology, the catheter device provided in this application includes a catheter, a balloon, a pre-inflated module, and a visual conduit. The catheter has independent inflation and visual chambers and is used for insertion into the treatment area of ​​the human body. The balloon is located at the distal end of the catheter and communicates with the distal end of the inflation chamber. The balloon is used to expand the treatment area of ​​the human body after inflation. The pre-inflated module includes a pre-inflated conduit and a pre-inflated assembly. The pre-inflated conduit is located at the proximal end of the catheter and communicates with the proximal end of the inflation chamber. The pre-inflated assembly is connected to the proximal end of the pre-inflated conduit and is used for pre-inflating with gas. The visual conduit is located at the proximal end of the catheter and communicates with the visual chamber. The visual conduit is used to insert a visual probe.

[0030] In application, if a narrow area is present in the ureter, a catheter needs to be inserted into the narrowed area. The narrowed area is then expanded by inflating a balloon, facilitating subsequent surgical treatment. Specifically, before surgery, gas is inflated into the pre-inflated assembly at a certain pressure. Guided by a visual probe inserted through a visual channel, the catheter is easily positioned into the corresponding narrowed area. The gas in the pre-inflated assembly is also controlled to flow through the pre-inflated channel and inflation chamber into the balloon at the distal end of the catheter, allowing the balloon to inflate and expand to the desired degree of dilation within the narrowed area of ​​the ureter.

[0031] The beneficial effects of this catheter device mainly include: The catheter device provided in this application embodiment has an inflation chamber and a visual chamber inside the catheter inserted into the treatment site of the human body, and a pre-inflation module and a visual channel are added at the proximal end of the catheter. When inflating the balloon at the distal end of the catheter, the gas pre-stored in the pre-inflation component only needs to enter the balloon through the pre-inflation channel and the inflation chamber, without the need for secondary power inflation. This not only simplifies the inflation structure and facilitates catheter insertion into the treatment site of the human body, making clinical operation more convenient, but also reduces the amount of consumables used and lowers costs. At the same time, the visual probe can guide the balloon during expansion, further reducing the difficulty of actual operation. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the overall structure of the catheter device in the embodiments of this application;

[0034] Figure 2 for Figure 1 A schematic diagram of the cross-section of the conduit in the conduit device shown;

[0035] Figure 3 for Figure 1 An enlarged schematic diagram of part A in the middle;

[0036] Figure 4 for Figure 1 Enlarged schematic diagram of part B;

[0037] Figure 5 for Figure 4 A schematic diagram of the central on / off valve in the closed state;

[0038] Figure 6 for Figure 4 A schematic diagram of the central on / off valve in the open state.

[0039] in:

[0040] 10-Catheter, 11-Insulation cavity, 12-Visual cavity, 13-Drainage cavity;

[0041] 20-balloon;

[0042] 30-Pre-inflated module, 31-Pre-inflated pipe, 311-Connector, 32-Pre-inflated assembly, 321-First pipe, 322-Pre-inflated airbag, 323-Outer shell, 324-Opening and closing valve, 3241-Valve body, 3242-Operating lever, 3243-Elastic element;

[0043] 40 - Visual pipe; 41 - Visual probe;

[0044] 50 - Drainage tube;

[0045] 60 - Inflation / depression assembly; 61 - Second pipe; 62 - Indicator airbag;

[0046] 70-Connector;

[0047] 80 - Check valve;

[0048] 90 - Fastener;

[0049] 100 - Developing unit. Detailed Implementation

[0050] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0051] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0052] Please see Figure 1 The catheter device provided in this application embodiment includes a catheter 10, a balloon 20, a pre-inflated module 30, and a visible conduit 40.

[0053] Please refer to the following: Figure 2 The catheter 10 has an independent inflation chamber 11 and a visual chamber 12. The catheter 10 is used to be inserted into the treatment site of the human body.

[0054] Please refer to the following: Figure 3 The distal end of the catheter 10 is provided with a balloon 20, which is connected to the distal end of the inflation chamber 11. The balloon 20 is used to expand the area to be treated on the human body after inflation. The distal end of the catheter 10 is also provided with a imaging component 100, which can be an imaging ring made of metal material, to facilitate the positioning of the distal end of the catheter 10 under ultrasound imaging.

[0055] Of course, depending on actual needs, the balloon 20 and the catheter 10 can be designed as an integrated unit, that is, the balloon 20 and the catheter 10 are a single structure with a filling area between them. Preferably, the catheter 10 can be made of materials such as high-density polyethylene, low-density polyethylene, and polyurethane, and the balloon 20 can be made of materials such as nylon, so that the balloon 20 has a certain degree of softness and can be contracted and expanded. Specifically, the expansion of the balloon 20 can be controlled by filling the filling area with gas (or liquid). When the balloon 20 is in the expanded state, the corresponding catheter 10 is in the treatment state.

[0056] The pre-inflation module 30 includes a pre-inflation conduit 31 and a pre-inflation assembly 32. The pre-inflation conduit 31 is located at the proximal end of the catheter 10 and communicates with the proximal end of the inflation chamber 11. The pre-inflation assembly 32 is connected to the proximal end of the pre-inflation conduit 31 and is used for pre-inflation with gas. A certain pressure of gas can be injected into the pre-inflation assembly 32 before the operation to facilitate the inflation of the balloon 20 at the distal end of the catheter 10.

[0057] A visual conduit 40 is located at the proximal end of the catheter 10 and is connected to the proximal end of the visual cavity 12. The visual conduit 40 is used to insert a visual probe 41. The visual probe 41 can be an endoscope or a camera. The visual probe 41 is slowly inserted into the visual conduit 40 and reaches the position to be observed through the visual cavity 12.

[0058] It should be noted that the definitions of "proximal" and "distal" of catheter 10 are based on the relative distance between the catheter 10's position within the body and the treatment site. The proximal end refers to the end of catheter 10 closest to the operator or medical device, typically located outside the body or near the body surface. The distal end refers to the end of catheter 10 furthest from the operator or medical device, typically located inside the body or near the target treatment site. The distal end is the part of catheter 10 that performs therapeutic or diagnostic functions, such as releasing drugs, injecting contrast agents, or performing surgical procedures.

[0059] When in use, if a narrow area is present in the ureter, the catheter 10 needs to be inserted into the narrow area, and the narrow area in the ureter will be expanded by inflating the balloon 20 to facilitate subsequent surgical treatment.

[0060] Specifically, before the operation, a certain pressure of gas can be filled into the pre-inflation assembly 32, and under the guidance of the visual probe 41 inserted by the visual tube 40, the catheter 10 can be conveniently placed into the corresponding narrow area, and the gas in the pre-inflation assembly 32 can be controlled to enter the balloon 20 at the distal end of the catheter 10 through the pre-inflation tube 31 and the inflation chamber 11, so that the balloon 20 can be inflated to the extent of expansion of the narrow area in the ureter.

[0061] In this way, the catheter device provided in this application embodiment has an inflation chamber 11 and a visual chamber 12 inside the catheter 10 inserted into the treatment site of the human body, and a pre-inflation module 30 and a visual channel 40 are added at the proximal end of the catheter 10. When inflating the balloon 20 at the distal end of the catheter 10, the gas pre-stored in the pre-inflation component 32 only needs to enter the balloon 20 through the pre-inflation channel 31 and the inflation chamber 11, without the need for secondary power inflation. This not only simplifies the inflation structure and facilitates the insertion of the catheter 10 into the treatment site of the human body, making clinical operation more convenient, but also reduces the amount of consumables used and lowers costs. At the same time, the visual probe 41 can guide the balloon 20 during expansion, further reducing the difficulty of actual operation.

[0062] Please refer to the following: Figure 4 The pre-inflated assembly 32 includes a first pipe 321, a pre-inflated airbag 322, a housing 323, and an on / off valve 324.

[0063] The first pipe 321 is connected to the proximal end of the pre-inflation pipe 31. The pre-inflation airbag 322 is located on the first pipe 321 and is used to contain gas at a certain pressure. The outer shell 323 is located outside the pre-inflation airbag 322. The outer shell 323 is a rigid shell used to protect the internal pre-inflation airbag 322. The opening and closing valve 324 is located on the first pipe 321 and is located between the pre-inflation airbag 322 and the pre-inflation pipe 31. The opening and closing valve 324 is used to control the opening and closing of the first pipe 321.

[0064] In this way, before surgery, the first conduit 321 can be connected to the inflation power device to pre-inflate the pre-inflated balloon 322 with gas at a certain pressure. When the balloon 20 needs to be inflated, the control valve 324 is opened, allowing the gas pre-stored in the pre-inflated balloon 322 to enter the balloon 20 through the pre-inflation conduit 31 and the inflation chamber 11.

[0065] Please refer to the following: Figure 5 and Figure 6 To facilitate control of gas flow, the on / off valve 324 includes a valve body 3241, an operating lever 3242, and an elastic element 3243. The valve body 3241 has an inner cavity communicating with the first pipe 321. The operating lever 3242 has a first position and a second position. The operating lever 3242 is configured to open the valve body 3241 in the first position and close the valve body 3241 in the second position. The operating lever 3242 has an operating head. The elastic element 3243 is located between the valve body 3241 and the operating head, and provides an elastic force to the operating lever 3242 to give it a tendency to move from the first position to the second position.

[0066] In this way, under normal conditions, the opening and closing valve 324 is in the closed state. When it is necessary to open the opening and closing valve 324, simply press down the operating rod 3242, moving it from the second position to the first position. At this time, the through hole on the operating rod 3242 connects to the inner cavity of the valve body 3241, and the gas pre-stored in the pre-inflated airbag 322 can enter the pre-inflated air pipe 31 through the opening and closing valve 324. In addition, due to the presence of the elastic element 3243 (specifically a compression spring), after the operating rod 3242 moves from the second position to the first position, the elastic element 3243 is in a compressed state. After releasing the operating rod 3242, the elastic element 3243 releases its elastic potential energy, causing the operating rod 3242 to return from the first position to the second position.

[0067] In some embodiments, the conduit device further includes an inflation / deflation assembly 60, which is arranged in parallel with the pre-inflation assembly 32 at the proximal end of the pre-inflation conduit 31.

[0068] In other words, the inflation / deflation assembly 60 and the pre-inflation assembly 32 can be arranged as two parallel gas branches at the proximal end of the pre-inflation conduit 31. The pre-inflation assembly 32 serves as the branch for inflating the balloon 20, while the inflation / deflation assembly 60 serves as the channel for releasing the gas from the balloon 20 postoperatively. Furthermore, in cases of malfunction of the pre-inflation assembly 32 or in situations requiring special inflation, conventional methods can be used to perform inflation / deflation operations via the inflation / deflation assembly 60.

[0069] To facilitate the assembly of the inflation / deflation assembly 60 and the pre-inflation assembly 32, a connector 311 is provided near the pre-inflation pipe 31. The conduit device also includes a connector 70. One end of the connector 70 is provided with a first connection hole. The connector 311 is inserted into the first connection hole to connect the connector 311 to one end of the connector 70. The other end of the connector 70 is provided with two second connection holes. The axes of the two second connection holes are arranged in parallel. The inflation / deflation assembly 60 and the pre-inflation assembly 32 are respectively inserted into the two second connection holes to install the inflation / deflation assembly 60 and the pre-inflation assembly 32 at the other end of the connector 70.

[0070] Specifically, the inflation / deflation assembly 60 includes a second conduit 61 and an indicator airbag 62. The second conduit 61 is connected to the proximal end of the pre-inflation conduit 31 and is used to connect to the inflation power device. The indicator airbag 62 is disposed on the second conduit 61 and is used to display the pressure inside the balloon 20.

[0071] To prevent gas backflow, both the inflation / deflation assembly 60 and the pre-inflation assembly 32 are equipped with a one-way valve 80 at their proximal ends.

[0072] In some embodiments, the catheter 10 further has a drainage cavity 13, and the catheter device further includes a drainage conduit 50, which is located at the proximal end of the catheter 10 and communicates with the proximal end of the drainage cavity 13. The drainage conduit 50 is used for drainage and flushing of the treatment site on the human body.

[0073] In this embodiment, the inflation cavity 11 and the visual cavity 12 are respectively located on both sides of the drainage cavity 13 along the first direction. The outer walls of both sides of the drainage cavity 13 along the first direction are arc-shaped. The cross-sectional area of ​​the drainage cavity 13 is larger than the cross-sectional area of ​​the inflation cavity 11 or the visual cavity 12. The dimensions of the two ends of the drainage cavity 13 along the second direction perpendicular to the first direction are larger than the dimensions of the central part of the drainage cavity 13.

[0074] It should be noted that the so-called first direction can be as follows: Figure 2 The Y-axis direction is shown, and the second direction can be as follows: Figure 2 The X-axis direction is shown.

[0075] With the above-described configuration, the operator can independently perform inflation and visualization operations without interfering with the drainage function, improving operational flexibility and efficiency. Setting the cross-sectional area of ​​the drainage cavity 13 to be larger than that of the inflation cavity 11 or the visualization cavity 12 allows the drainage cavity 13 to more effectively drain large amounts of liquid or gas, reducing the risk of blockage. Furthermore, the larger cross-sectional area reduces fluid flow velocity, minimizing irritation and damage to tissues. Simultaneously, designing the drainage cavity 13 to be larger at both ends and smaller in the middle helps reduce resistance within the body, making it easier to pass through tortuous blood vessels or narrow tubes. In addition, the arc-shaped outer wall design of the drainage cavity 13 not only avoids the inflation cavity 11 and the visualization cavity 12, improving the space utilization within the catheter 10, but also reduces fluid turbulence within the cavity, improving drainage efficiency while minimizing friction and damage to surrounding tissues.

[0076] In some embodiments, the catheter device further includes a fixing member 90, which is fixedly disposed at the proximal end of the catheter 10. The distal ends of the pre-inflation tube 31, the visual tube 40, and the drainage tube 50 are all fixed within the fixing member 90, such that the pre-inflation tube 31, the visual tube 40, and the drainage tube 50 are connected to the proximal end of the catheter 10, and the pre-inflation tube 31 is connected to the proximal end of the inflation chamber 11, the visual tube 40 is connected to the proximal end of the visual chamber 12, and the drainage tube 50 is connected to the proximal end of the drainage chamber 13.

[0077] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0078] The catheter device provided in this application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the solution and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of this application.

Claims

1. A catheter device, characterized in that, include: The catheter has independent air chambers and a visual chamber; A balloon is located at the distal end of the catheter and communicates with the distal end of the inflation chamber; A pre-inflated module includes a pre-inflated pipe and a pre-inflated assembly. The pre-inflated pipe is located at the proximal end of the conduit and communicates with the proximal end of the inflation chamber. The pre-inflated assembly is connected to the proximal end of the pre-inflated pipe and is used for pre-inflating gas. A visual conduit, located at the proximal end of the conduit and connected to the visual cavity, is used to insert a visual probe.

2. The catheter device of claim 1, wherein, The pre-inflated assembly includes: The first conduit is connected to the proximal end of the pre-inflated conduit; A pre-inflated airbag, located on the first pipe, is used to contain gas at a certain pressure; The outer shell is located outside the pre-inflated airbag; An on / off valve is provided on the first pipe and located between the pre-inflated airbag and the pre-inflated pipe, for controlling the opening and closing of the first pipe.

3. The catheter device of claim 2, wherein, The on / off valve includes: The valve body has an internal cavity communicating with the first pipe; An operating lever has a first position and a second position, the operating lever being configured to open the valve body in the first position and close the valve body in the second position, the operating lever being provided with an operating head; An elastic element, disposed between the valve body and the operating head, is used to provide an elastic force to the operating lever so that the operating lever tends to move from the first position to the second position.

4. The catheter device of claim 1, wherein, The conduit device further includes an inflation / deflation assembly, which is connected in parallel with the pre-inflation assembly at the proximal end of the pre-inflation conduit.

5. The catheter device of claim 4, wherein, The pre-inflated pipe is provided with a connector at its proximal end. The conduit device also includes a connector seat. One end of the connector seat is provided with a first connector hole. The connector head is inserted into the first connector hole. The other end of the connector seat is provided with two second connector holes. The inflation / deflation assembly and the pre-inflated assembly are respectively inserted into the two second connector holes.

6. The catheter device of claim 4, wherein, The inflation / deflation assembly includes: The second pipe is connected to the proximal end of the pre-inflated pipe; An indicator airbag, located on the second conduit, is used to display the pressure inside the airbag.

7. The catheter device of claim 4, wherein, Both the inflation / deflation assembly and the pre-inflation assembly are equipped with a one-way valve at their proximal ends.

8. The catheter device of any of claims 1-7, wherein, The catheter also has a drainage cavity, and the catheter device further includes a drainage tube located at the proximal end of the catheter and communicating with the drainage cavity. The drainage tube is used for drainage and flushing of the body's treatment site. The inflation cavity and the visual cavity are respectively located on both sides of the drainage cavity along the first direction. The outer walls of both sides of the drainage cavity along the first direction are arc-shaped. The cross-sectional area of ​​the drainage cavity is larger than the cross-sectional area of ​​the inflation cavity or the visual cavity. The dimensions of the two ends of the drainage cavity along the second direction perpendicular to the first direction are larger than the dimensions of the central part of the drainage cavity.

9. The catheter device of claim 8, wherein, The catheter device also includes a fixing member, which is fixedly disposed at the proximal end of the catheter, and the distal ends of the pre-inflated tube, the visible tube, and the drainage tube are all fixed within the fixing member.

10. The catheter device of any of claims 1-7, wherein, The distal end of the catheter is provided with a radiopaque component.

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