An dilation catheter device and a drainage system for ostomy.

Abstract

This utility model discloses an expansion catheter device and a drainage system for stoma surgery, applicable to the field of medical devices. The expansion catheter device includes: a catheter body with a guidewire channel and a drainage channel, the first end of the catheter body being connected to the tissue to be drained; a connector with a first port, a second port, and a third port, the first port being connected to the second end of the catheter body, the second port communicating with the guidewire channel of the catheter body, and the third port communicating with the drainage channel of the catheter body; and a control valve with a catheter connection port, a negative pressure source connection port, and a drainage port, the catheter connection port being connected to the third port of the connector, and the catheter connection port being selectively connected to either the negative pressure source connection port or the drainage port, so that the fluid in the tissue to be drained can be actively drained from the drainage port or passively drained through the negative pressure source connection port. The expansion catheter device provided by this utility model has a wide range of applications, effectively simplifies equipment, facilitates operation, improves accuracy, and reduces damage.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to an expansion catheter device and a drainage system for fistula surgery. Background Technology

[0002] A stoma is a procedure performed percutaneously in patients whose kidneys are obstructed (e.g., due to injury) and for whom other methods of relieving the obstruction are not feasible. The stoma is inserted into the renal pelvis to dilate and drain the kidney.

[0003] Many patients require long-term placement of a nephrostomy balloon catheter due to their condition. This balloon catheter, connected to a delivery catheter, is used to drain fluid from the renal cavity. However, during the surgical procedure, pressure fluctuations within the catheter can cause cortical necrosis or even septic shock, endangering the patient's life. To monitor this pressure, pressure sensors are often installed at corresponding positions on the balloon catheter and delivery catheter. These sensors determine the pressure level, facilitating fluid drainage. However, this method of using pressure sensors leads to structural complexity, increasing the risk of irreparable damage to the nephrostomy site. Furthermore, the connecting catheter in these techniques is prone to deformation during fluid drainage, potentially causing blockage and rendering it unusable.

[0004] Therefore, how to improve the reliability of dilation catheter devices is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide an expansion catheter device and a drainage system for fistula surgery, which is easy to operate, highly accurate, and convenient for drainage.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A dilating catheter device, comprising:

[0008] The catheter body is provided with a guidewire channel and a drainage channel, and the first end of the catheter body is connected to the tissue to be drained.

[0009] The connector has a first port, a second port and a third port. The first port is connected to the second end of the catheter body, the second port is connected to the guidewire channel of the catheter body, and the third port is connected to the drainage channel of the catheter body.

[0010] The control valve is provided with a conduit connection port, a negative pressure source connection port, and a drain port. The conduit connection port is connected to the third port of the connector, and the conduit connection port is selectively connected to either the negative pressure source connection port or the drain port, so that the liquid in the tissue to be drained can be actively discharged from the drain port or passively discharged through the negative pressure source connection port.

[0011] On the other hand, the guidewire channel is located at the center of the catheter body, the drainage channel is located at the periphery of the catheter body, and the extension directions of the guidewire channel and the drainage channel are both parallel to the extension direction of the catheter body.

[0012] On the other hand, the drainage channel spirals from the first end to the second end of the catheter body.

[0013] On the other hand, the drainage channel is located close to the outer peripheral surface of the catheter body.

[0014] On the other hand, the number of drainage channels is at least two.

[0015] On the other hand, there are multiple drainage channels, which are evenly distributed along the periphery of the catheter body.

[0016] On the other hand, the outer periphery of the first port of the connector is provided with a locking platform for engaging with the conduit body, and the outer periphery of the second and third ports of the connector is provided with external threads for bolt installation.

[0017] On the other hand, a control handle is also movably mounted on the control valve. The control handle includes a handle part and a conductive part. The conductive part is connected to the handle part and rotates with the handle part. The conductive part is provided with a first hole, a second hole and a third hole that are interconnected.

[0018] When the liquid pressure in the cavity of the tissue to be drained is greater than the preset pressure, the control handle is rotated to the first position. When the control handle is rotated to the first position, the first hole is connected to the catheter body, the second hole is connected to the negative pressure source connection port, and the third hole is away from the drain port.

[0019] When the liquid pressure in the cavity of the tissue to be drained is less than or equal to the preset pressure, the negative pressure source connection port is blocked, and the control handle is rotated to the second position. When the control handle is rotated to the second position, the first hole corresponds to the position of the negative pressure source connection port, the second hole is connected to the catheter body, and the third hole is connected to the drain port.

[0020] On the other hand, the negative pressure source connection port and the conduit connection port are symmetrically distributed with respect to the axis of rotation of the control handle; the first hole and the second hole are symmetrically distributed with respect to the axis of rotation of the control handle.

[0021] This utility model also provides a drainage system for fistula surgery, including a negative pressure source device, a pressure detection device, and the dilation catheter device described in any one of the above.

[0022] The dilation catheter device provided by this utility model includes: a catheter body with a guidewire channel and a drainage channel, wherein a first end of the catheter body is connected to the tissue to be drained; a connector with a first port, a second port and a third port, wherein the first port is connected to the second end of the catheter body, the second port is connected to the guidewire channel of the catheter body, and the third port is connected to the drainage channel of the catheter body; and a control valve with a catheter connection port, a negative pressure source connection port and a drainage port, wherein the catheter connection port is connected to the third port of the connector, and the catheter connection port is selectively connected to either the negative pressure source connection port or the drainage port, so that the liquid in the tissue to be drained is actively drained from the drainage port or passively drained through the negative pressure source connection port. The dilation catheter device provided by this utility model, through the setting of the connector, can respectively guide the guidewire channel and the drainage channel to different positions, facilitating guidewire insertion and liquid drainage; through the setting of the control valve, by selectively connecting the negative pressure source connection port and the drainage port to the catheter connection port, when the liquid pressure in the cavity of the tissue to be drained is high, the liquid in the cavity of the tissue to be drained can be directly and quickly discharged through the drainage port by connecting the drainage port to the catheter connection port; when the liquid pressure in the cavity of the tissue to be drained is low, the liquid in the cavity of the tissue to be drained can be discharged by the suction effect of the negative pressure source by connecting the negative pressure source connection port to the catheter connection port, meeting the drainage needs under different conditions; this method allows for the detection of the liquid pressure in the cavity of the tissue to be drained to be obtained externally using ultrasonic testing equipment, avoiding the need for a built-in pressure sensor, with a wide range of applications, effectively simplifying the equipment, facilitating operation, improving accuracy, and reducing damage.

[0023] The drainage system for ostomy provided by this utility model is equipped with the above-mentioned dilator catheter device. Since the dilator catheter device has the above-mentioned technical effects, the drainage system for ostomy provided with the dilator catheter device should also have the corresponding technical effects. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A schematic diagram of the process of inserting a guidewire into the tissue to be drained;

[0026] Figure 2 A schematic diagram of a specific embodiment of the dilation catheter device provided by this utility model;

[0027] Figure 3 for Figure 2 A schematic diagram of the structure of the catheter body and connectors in the dilation catheter device shown;

[0028] Figure 4 for Figure 2 A schematic diagram of the connecting parts in the dilation catheter device shown;

[0029] Figure 5 for Figure 2 A schematic diagram of the control valve in the expansion conduit device shown;

[0030] Figure 6 for Figure 2 A schematic diagram of the control valve in another state of the expansion conduit device shown;

[0031] Figure 7 for Figure 6 A schematic diagram of the conductive component of the operating handle in the control valve shown.

[0032] Figure 8 for Figure 2 A schematic diagram of the structure of the catheter body in the dilation catheter device shown;

[0033] Figure 9 for Figure 8 Left view of the catheter body shown;

[0034] Figure 10 for Figure 8 The diagram shows a cross-sectional view of the catheter body.

[0035] Figure label:

[0036] Tissue to be drained 01; Puncture sheath needle 02; Sheath 03; Guide wire 04;

[0037] The catheter body 100; guide wire channel 101; drainage channel 102; connector 200; first port 201; second port 202; third port 203; clamping platform 204; external thread 205; control valve 300; catheter connection port 301; negative pressure source connection port 302; drainage port 303; control handle 310; handle part 311; conductive part 312; first hole 312-1; second hole 312-2; third hole 312-3. Detailed Implementation

[0038] The core of this invention is to provide an expansion catheter device and a drainage system for fistula surgery, which can significantly improve reliability, reduce tube deformation problems, and facilitate operation.

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] Please refer to Figures 1 to 10 , Figure 1 A schematic diagram of the process of inserting a guidewire into the tissue to be drained; Figure 2 A schematic diagram of a specific embodiment of the dilation catheter device provided by this utility model; Figure 3 for Figure 2 A schematic diagram of the structure of the catheter body and connectors in the dilation catheter device shown; Figure 4 for Figure 2 A schematic diagram of the connecting parts in the dilation catheter device shown; Figure 5 for Figure 2 A schematic diagram of the control valve in the expansion conduit device shown; Figure 6 for Figure 2 A schematic diagram of the control valve in another state of the expansion conduit device shown; Figure 7 for Figure 6 A schematic diagram of the conductive component of the operating handle in the control valve shown. Figure 8 for Figure 2 A schematic diagram of the structure of the catheter body in the dilation catheter device shown; Figure 9 for Figure 8 Left view of the catheter body shown; Figure 10 for Figure 8 The diagram shows a cross-sectional view of the catheter body.

[0041] In this embodiment, the dilation catheter device includes:

[0042] The catheter body 100 is provided with a guidewire channel 101 and a drainage channel 102, and the first end of the catheter body 100 is connected to the tissue 01 to be drained.

[0043] The connector 200 has a first port 201, a second port 202 and a third port 203. The first port 201 is connected to the second end of the catheter body 100, the second port 202 is connected to the guide wire channel 101 of the catheter body 100, and the third port 203 is connected to the drainage channel 102 of the catheter body 100.

[0044] The control valve 300 is provided with a conduit connection port 301, a negative pressure source connection port 302, and a drain port 303. The conduit connection port 301 is connected to the third port 203 of the connector 200, and the conduit connection port 301 is selectively connected to either the negative pressure source connection port 302 or the drain port 303, so that the liquid in the tissue 01 to be drained can be actively discharged from the drain port 303 or passively discharged through the negative pressure source connection port 302.

[0045] Specifically, the tissue to be drained (01) is generally the kidney, such as... Figure 1 As shown, under ultrasound guidance, the puncture site is located, and the puncture sheath needle 02 is inserted into the renal calyx, specifically into the cavity of the tissue to be drained 01. After removing the needle core, the guide wire 04 is inserted into the sheath 03 for guidance. The sheath 03 is then removed, leaving the guide wire 04 in place. Next, the first end of the dilator catheter is inserted along the guide wire 04 into the tissue to be drained 01. The second end of the dilator catheter is connected to a control valve 300, which is connected to a negative pressure source device. The negative pressure source device can aspirate renal fluid. The catheter connection port 301 can be configured to either connect to the negative pressure source connection port 302 or the drainage port 303. This can be adjusted using a handle, valve, or other means to achieve passive or active drainage via negative pressure aspiration. When the catheter connection port 301 is connected to the drainage port 303 for active drainage, the negative pressure source connection port 302 should be sealed using a plug or other sealing components.

[0046] This dilation catheter device, through the connection 200, allows the guidewire channel 101 and the drainage channel 102 to be connected to different positions, facilitating guidewire 04 insertion and fluid drainage. Furthermore, through the control valve 300, either the negative pressure source connection port 302 or the drainage port 303 can be connected to the catheter connection port 301. When the fluid pressure within the cavity of the tissue to be drained 01 is high, the drainage port 303 can be connected to the catheter connection port 301, allowing the fluid within the cavity of the tissue to be drained to flow directly through the drainage port 303. 03. Rapid drainage: When the fluid pressure inside the cavity of the tissue to be drained 01 is low, the fluid inside the cavity of the tissue to be drained 01 can be drained by connecting the negative pressure source connection port 302 to the catheter connection port 301, using the suction effect of the negative pressure source to meet the drainage needs under different conditions. In this way, the fluid pressure inside the cavity of the tissue to be drained 01 can be detected externally by ultrasonic testing equipment, avoiding the need for built-in pressure sensors, which can effectively simplify the equipment, facilitate operation, improve accuracy, and reduce damage.

[0047] In some embodiments, the guidewire channel 101 is located at the center of the catheter body 100, and the drainage channel 102 is located at the periphery of the catheter body 100, with both the guidewire channel 101 and the drainage channel 102 extending parallel to the extension direction of the catheter body 100. Specifically, by locating the guidewire channel 101 at the center of the catheter body 100, the arrangement of the connector 200 can be facilitated; furthermore, as... Figures 2 to 4 As shown, the first port 201 and the second port 202 in the connector 200 can be set to extend in parallel directions. After the first port 201 is connected to the catheter body 100, the guide wire channel 101 in the center of the catheter body 100 can be parallel to the extension direction of the second port 202, which makes it convenient for the guide wire 04 to be inserted from the second port 202 of the connector 200 and extend to the position of the guide wire channel 101. The extension direction of the third port 203 in the connector 200 is inclined relative to the extension direction of the first port 201 or the second port 202, and the extension direction of the third port 203 in the connector 200 is inclined towards the side closer to the second port 202. The third port 203 is connected to the drainage channel 102, which makes it convenient for the accumulated fluid to be discharged from the drainage channel 102.

[0048] In some implementations, such as Figure 10 As shown, the drainage channel 102 spirals from the first end to the second end of the catheter body 100. As an internal drainage channel of the catheter body 100, the drainage channel 102 extends in a spiral shape, which can facilitate drainage and increase the strength of the catheter body 100, reducing deformation problems.

[0049] In some implementations, such as Figure 8 and Figure 9The drainage channel 102 shown is located close to the outer peripheral surface of the catheter body 100. Of course, the outer peripheral part of the catheter body 100 should be a sealed structure, with only the end having an opening or clearance structure to facilitate the drainage channel 102 to communicate with the third port 203 of the connector 200. This is because the outer peripheral surface of the catheter body 100 is large, which can maximize the space size of the drainage channel 102 and leave sufficient space for the opening of the guidewire channel 101.

[0050] In some implementations, such as Figure 9 As shown, there are at least two drainage channels 102. Since there may be particles such as gravel in the accumulated liquid, by setting multiple drainage channels 102, the situation where a single drainage channel 102 is blocked and cannot be used normally can be effectively avoided, thereby improving reliability.

[0051] In some embodiments, there are multiple drainage channels 102, which are evenly distributed around the periphery of the catheter body 100. This can ensure the structural stability of the catheter body 100 and the force distribution is more uniform. Of course, there can also be one, three or more drainage channels 102. It is preferred that they are evenly distributed around the periphery of the catheter body 100. In actual processing, drainage channels 102 can also be set at appropriate locations as needed, and are not limited to the solution given in this embodiment.

[0052] In some implementations, such as Figure 4 As shown, the outer periphery of the first port 201 of the connector 200 is provided with a locking platform 204 for engaging with the catheter body 100. The locking platform 204 has a barbed structure to facilitate quick connection with the catheter body 100 while ensuring a sealing effect. The outer periphery of the second port 202 and the third port 203 of the connector 200 are both provided with external threads 205 for bolt installation. The second port 202 of the connector 200 can be quickly disconnected from the guide wire 04 conveying mechanism, and the third port 203 of the connector 200 can be quickly disconnected from the control valve 300. The use of threaded and bolted connection methods results in low cost and a firm connection.

[0053] In some implementations, such as Figure 2 , Figure 5 and Figure 6 As shown, a control handle 310 is also movably mounted on the control valve 300. The control handle 310 includes a handle portion 311 and a conductive portion 312. The conductive portion 312 is connected to the handle portion 311 and rotates with the handle portion 311, such as... Figure 7 As shown, the conductive part 312 is provided with a first hole 312-1, a second hole 312-2 and a third hole 312-3 that are interconnected; the control handle 310 rotates and connects one of the negative pressure source connection port 302 and the drain port 303 to the conduit connection port 301;

[0054] When the fluid pressure in the cavity of the tissue to be drained (01) exceeds the preset pressure, the control handle 310 is rotated to the first position, such as... Figure 5 As shown, when the control handle 310 is rotated to the first position, the first hole 312-1 of the control handle 310 is connected to the catheter body 100, the second hole 312-2 is connected to the negative pressure source connection port 302, and the third hole 312-3 is away from the drain port 303.

[0055] When the liquid pressure in the cavity of the tissue to be drained 01 is less than or equal to the preset pressure, the negative pressure source connection port 302 is blocked, and the control handle 310 is rotated to the second position. Figure 6 As shown, when the control handle 310 is rotated to the second position, the first hole 312-1 corresponds to the position of the negative pressure source connection port 302, the second hole 312-2 is connected to the catheter body 100, and the third hole 312-3 is connected to the drain port 303.

[0056] Specifically, the handle 311 can be rod-shaped, with an appropriately increased length for easy gripping and rotation. The handle 311 is fixed above the conductive part 312. Rotating the handle 311 causes the conductive part 312 to rotate, thereby changing the positions of the first hole 312-1, the second hole 312-2, and the third hole 312-3. The liquid pressure within the cavity of the tissue to be drained 01 can be obtained using an ultrasonic device. The above process involves determining the magnitude of the liquid pressure within the cavity of the tissue to be drained 01 to change the position of the control handle 310. Alternatively, a driving component can be installed on the control handle 310, connected to a controller. The controller automatically obtains the magnitude of the liquid pressure within the cavity of the tissue to be drained 01 and controls the driving component to change the position of the control handle 310. The driving component can be a motor or similar structure. This operation allows for the selection of different drainage modes as needed, enabling both suction drainage and automatic rapid drainage.

[0057] In some embodiments, the negative pressure source connection port 302 and the conduit connection port 301 are symmetrically distributed with respect to the axis of rotation of the control handle 310; the first hole 312-1 and the second hole 312-2 are symmetrically distributed with respect to the axis of rotation of the control handle 310. With this arrangement, after the control handle 310 is rotated 180°, the positions of the first hole 312-1 and the second hole 312-2 are interchanged, which can realize the switching of the connection mode between the negative pressure source connection port 302 and the conduit connection port 301, ensuring the reliability of use; the setting position of the third hole 312-3 should correspond to the position of the drain port 303, so that the first hole 312-1 corresponds to the position of the negative pressure source connection port 302, and when the second hole 312-2 is connected to the conduit body 100, the position of the third hole 312-3 corresponds exactly to the position of the drain port 303, ensuring smooth drainage.

[0058] In addition to the aforementioned dilation catheter device, this utility model also provides a fistula drainage system including the aforementioned dilation catheter device; furthermore, the fistula drainage system also includes a negative pressure source device and a pressure detection device. The negative pressure source device is connected to the negative pressure source connection port 302 of the control valve 300, and the pressure detection device can be an ultrasonic device. The probe of the ultrasonic device can be used to detect the liquid pressure in the cavity of the tissue to be drained 01, thereby determining whether the liquid pressure in the cavity of the tissue to be drained 01 is greater than the preset pressure, which serves as the basis for adjusting the control handle 310.

[0059] For the structure of other parts of the drainage system for this fistula procedure, please refer to relevant technologies; they will not be described in detail here.

[0060] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0061] The dilation catheter device provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A dilating catheter device, comprising: include: The catheter body (100) is provided with a guidewire channel (101) and a drainage channel (102), and the first end of the catheter body (100) is connected to the tissue (01) to be drained; The connector (200) is provided with a first port (201), a second port (202) and a third port (203). The first port (201) is connected to the second end of the catheter body (100), the second port (202) is connected to the guidewire channel (101) of the catheter body (100), and the third port (203) is connected to the drainage channel (102) of the catheter body (100). The control valve (300) is provided with a conduit connection port (301), a negative pressure source connection port (302) and a drain port (303). The conduit connection port (301) is connected to the third port (203) of the connector (200), and the conduit connection port (301) is selectively connected to either the negative pressure source connection port (302) or the drain port (303) so that the liquid in the tissue (01) to be drained can be actively discharged from the drain port (303) or passively discharged through the negative pressure source connection port (302).

2. The dilation catheter device of claim 1, wherein, The guidewire channel (101) is located at the center of the catheter body (100), and the drainage channel (102) is located at the periphery of the catheter body (100). The extension directions of the guidewire channel (101) and the drainage channel (102) are both parallel to the extension direction of the catheter body (100).

3. The expanding conduit device of claim 1, wherein, The drainage channel (102) spirals around the first end of the catheter body (100) to the second end.

4. The expanding conduit device of claim 3, wherein, The drainage channel (102) is located near the outer peripheral surface of the catheter body (100).

5. The expanding conduit device of claim 1, wherein, The number of drainage channels (102) is at least two.

6. The expanding conduit device of claim 1, wherein, The number of drainage channels (102) is multiple, and they are evenly distributed along the periphery of the catheter body (100).

7. The dilation catheter device according to claim 1, characterized in that, The outer periphery of the first port (201) of the connector (200) is provided with a locking platform (204) for engaging with the conduit body (100), and the outer periphery of the second port (202) and the third port (203) of the connector (200) are both provided with external threads (205) for bolt installation.

8. The dilation catheter device according to any one of claims 1 to 7, characterized in that, A control handle (310) is also movably mounted on the control valve (300). The control handle (310) includes a handle part (311) and a conductive part (312). The conductive part (312) is connected to the handle part (311) and rotates with the handle part (311). The conductive part (312) is provided with a first hole (312-1), a second hole (312-2), and a third hole (312-3) that are interconnected. When the liquid pressure in the cavity of the tissue to be drained (01) is greater than the preset pressure, the control handle (310) is rotated to the first position. When the control handle (310) is rotated to the first position, the first hole (312-1) is connected to the catheter body (100), the second hole (312-2) is connected to the negative pressure source connection port (302), and the third hole (312-3) is away from the drain port (303). When the liquid pressure in the cavity of the tissue to be drained (01) is less than or equal to the preset pressure, the negative pressure source connection port (302) is blocked, and the control handle (310) is rotated to the second position. When the control handle (310) is rotated to the second position, the first hole (312-1) corresponds to the position of the negative pressure source connection port (302), the second hole (312-2) is connected to the catheter body (100), and the third hole (312-3) is connected to the drain port (303).

9. The dilation catheter device according to claim 8, characterized in that, The negative pressure source connection port (302) and the conduit connection port (301) are symmetrically distributed with respect to the axis of rotation of the control handle (310); the first hole (312-1) and the second hole (312-2) are symmetrically distributed with respect to the axis of rotation of the control handle (310).

10. A drainage system for a stoma, comprising a dilation catheter device, a negative pressure source device, and a pressure detection device, characterized in that, The dilation catheter device is the dilation catheter device according to any one of claims 1 to 9.

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