Perforated urinary catheter
By setting drug delivery holes at different distances and with different diameters in the urinary catheter, the problem of the drug mainly flowing out from near the connection end is solved, and the drug is evenly distributed far from the connection end, thus improving the therapeutic effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BAITAI JIABO (SUZHOU) MEDICAL TECHNOLOGY CO LTD
- Filing Date
- 2025-04-11
- Publication Date
- 2026-07-03
AI Technical Summary
The existing urinary catheters have the same orifice diameter, which causes the medication to mainly flow out from the orifice near the connection end, while the amount of medication flowing out from the orifice far from the connection end is insufficient, affecting the treatment effect.
Design a perforated urinary catheter, the administration tube includes a first administration port and a second administration port, the distance from the first administration port to the connecting terminal is less than that of the second administration port, and the diameter of the first administration port is also smaller than that of the second administration port, and optionally a third administration port is added to increase the amount of drug dispensed away from the connecting terminal.
By adjusting the position and diameter of the administration port, the amount of medication administered further away from the connection terminal is increased, thereby improving the uniformity of drug distribution and therapeutic effect in the urethra away from the connection terminal.
Smart Images
Figure CN224441901U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of catheterization devices, and in particular to a perforated catheter. Background Technology
[0002] Postoperative indwelling urinary catheters are generally placed to avoid urinary retention after general anesthesia or for urine volume monitoring after major surgery. They have advantages such as facilitating fluid management and making it easier for patients to urinate.
[0003] A urinary catheter may include an inner drug delivery tube, which may have multiple delivery ports of the same diameter. In use, the catheter is inserted into the patient's urethra, and medication is injected into the inner drug delivery tube. The medication is then delivered to the patient's urethra through the various delivery ports.
[0004] Because all existing catheter administration ports have the same diameter, most of the medication flows out from the ports closer to the catheter connection end. This results in little or no medication flowing out from the ports further away from the connection end, leading to a smaller amount of medication reaching the urethra furthest from the connection end and affecting the treatment efficacy in those areas. Therefore, existing catheters suffer from the problem of insufficient medication delivery to areas far from the connection end. Utility Model Content
[0005] The purpose of this application is to provide a perforated urinary catheter that increases the amount of medication dispensed from a second administration port located away from the connecting terminal, comprising a connecting terminal and an administration tube. The administration tube is connected to the connecting terminal, and the administration tube includes a first administration port and a second administration port, which are spaced apart. The distance from the first administration port to the connecting terminal is less than the distance from the second administration port to the connecting terminal, and the diameter of the first administration port is smaller than the diameter of the second administration port.
[0006] Optionally, the drug delivery tube further includes a third drug delivery port, which is disposed separately from the second drug delivery port. The distance from the second drug delivery port to the connecting terminal is less than the distance from the third drug delivery port to the connecting terminal, and the diameter of the second drug delivery port is less than the diameter of the third drug delivery port.
[0007] Optionally, the administration tube includes an outer tube and an inner tube, the inner tube being inserted through the outer tube, the outer tube being connected to the connecting terminal, and the first administration port, the second administration port, and the third administration port being inserted through the outer tube and the inner tube.
[0008] Optionally, the perforated catheter further includes a first cap, the connecting terminal includes a first connecting end, one end of the first connecting end is connected to one end of the administration tube, the first cap is used to cover the other end of the first connecting end, and the first connecting end is in communication with the administration inner tube.
[0009] Optionally, the perforated catheter further includes a first connecting strap, the two ends of which are respectively connected to the first connecting end and the first cap.
[0010] Optionally, the perforated catheter further includes a media delivery tube, the connecting terminal includes a second connecting end, the second connecting end is connected to the first connecting end, the media delivery tube is connected to the second connecting end, and the direction of the first connecting band away from the first connecting end is different from the direction of the second connecting end away from the first connecting end.
[0011] Optionally, the perforated catheter further includes a second cap and a drainage inner tube, the connecting terminal includes a third connecting end, one end of the third connecting end is connected to the first connecting end, the drainage inner tube is in communication with the third connecting end, and the second cap is used to cover the other end of the third connecting end.
[0012] Optionally, the perforated catheter further includes a second connecting strap, the two ends of which are respectively connected to the third connecting end and the second cap.
[0013] Optionally, the direction in which the first connecting strip is away from the first connecting end is different from the direction in which the second connecting strip is away from the first connecting end.
[0014] Optionally, the direction in which the first connecting strip is away from the first connecting end is different from the direction in which the third connecting end is away from the first connecting end.
[0015] The beneficial effects of this application are as follows: by providing a connecting terminal and a drug delivery tube, the drug delivery tube is connected to the connecting terminal. The drug delivery tube includes a first drug delivery hole and a second drug delivery hole, which are disposed separately. The distance from the first drug delivery hole to the connecting terminal is less than the distance from the second drug delivery hole to the connecting terminal, and the diameter of the first drug delivery hole is smaller than the diameter of the second drug delivery hole.
[0016] Since the distance from the first administration port to the connecting terminal is less than the distance from the second administration port to the connecting terminal, the diameter of the first administration port is smaller than the diameter of the second administration port. That is, the diameter of the second administration port becomes larger, which can increase the amount of liquid medicine dispensed from the second administration port that is farther away from the connecting terminal.
[0017] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, the following describes the application in detail with reference to the preferred embodiments and accompanying drawings. Attached Figure Description
[0018] Figure 1This is a schematic diagram of the application of a perforated urinary catheter in one embodiment of this application (the first cover, the first connecting strap, the second cover, the second connecting strap, and the second connecting end are omitted).
[0019] Figure 2 This is a front view of a perforated urinary catheter in one embodiment of this application (the administration tube is cut off, and the first and second caps are in the closed state);
[0020] Figure 3 In one embodiment of this application, Figure 2 A magnified section view along line A;
[0021] Figure 4 This is a top view of the first connecting end, the first cover, and the first connecting strip in one embodiment of this application (the first connecting end is shown in part, and the first cover is in a closed state).
[0022] In the attached figures, the following labels are used:
[0023] 1. Connecting terminal
[0024] 10 First connection end
[0025] 11 Second connection end
[0026] 12 Third connection end
[0027] 2. Dosing tube
[0028] 20 First drug delivery hole
[0029] 21 Second drug delivery port
[0030] 22 Third drug delivery hole
[0031] 23 Outer tube
[0032] 24. Inner tube for drug delivery
[0033] 3 First cover
[0034] 4 First connecting belt
[0035] 5. Medium delivery pipe
[0036] 6. Airbag cavity
[0037] 7 Second cover
[0038] 8. Drainage tube
[0039] 9 Second connecting belt Detailed Implementation
[0040] The following specific embodiments illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification.
[0041] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present application will now be described in detail with reference to the accompanying drawings and embodiments. To enable those skilled in the art to better understand the solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.
[0042] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.
[0043] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0044] For ease of explanation, a rectangular coordinate system O-XYZ is set in some of the attached figures. The X and Z axes are parallel to the radial direction of the administration tube 2, and the Y axis is parallel to the axial direction of the administration tube 2. The positive directions of the X, Y, and Z axes remain the same in all the attached figures with coordinate systems.
[0045] like Figure 1As shown, this embodiment provides a perforated urinary catheter, including a connecting terminal 1 and a drug delivery tube 2. The drug delivery tube 2 is connected to the connecting terminal 1. The drug delivery tube 2 includes a first drug delivery hole 20 and a second drug delivery hole 21, which are spaced apart. The distance from the first drug delivery hole 20 to the connecting terminal 1 is less than the distance from the second drug delivery hole 21 to the connecting terminal 1, and the diameter of the first drug delivery hole 20 is less than the diameter of the second drug delivery hole 21.
[0046] like Figure 1 As shown, since the distance from the first administration port 20 to the connecting terminal 1 is less than the distance from the second administration port 21 to the connecting terminal 1, the diameter of the first administration port 20 is less than the diameter of the second administration port 21, that is, the diameter of the second administration port 21 becomes larger, thus increasing the amount of liquid medicine dispensed from the second administration port 21 which is farther away from the connecting terminal 1.
[0047] like Figure 1 As shown, the starting end of the administration tube 2 can be connected to the end of the connecting terminal 1 by integral molding or welding. The starting end of the connecting terminal 1 can be connected to a urine bag or a medicine bag / bottle (e.g., the medicine bag can be an infusion bag or the medicine bottle can be an infusion bottle) by plugging in. The first administration port 20, the second administration port 21, and the third administration port 22 can be provided on the side wall of the administration tube 2. The specific configuration of the connecting terminal 1 can be referred to the following description of the embodiment. The administration tube 2 can deliver the medicine solution in the medicine bag / bottle into the patient's urethra.
[0048] like Figure 1 As shown, the distance from the first administration port 20 to the connecting terminal 1 can be the distance from the central axis of the first administration port 20 to the end face of the connecting terminal 1 (the distances from the first administration port 20, the second administration port 21, and the third administration port 22 to the connecting terminal 1 are based on the administration tube 2 in the straightened state). The distance from the second administration port 21 to the connecting terminal 1 can be the distance from the central axis of the second administration port 21 to the end face of the connecting terminal 1. The distance from the third administration port 22 to the connecting terminal 1 can be the distance from the central axis of the third administration port 22 to the end face of the connecting terminal 1 (the first administration port 20, the second administration port 21, and the third administration port 22 can be cylindrical).
[0049] like Figure 1 As shown, due to the different pressure differences at different locations of the drug delivery ports, the closer the drug delivery port is to the connection end, the greater its drug flow rate. Therefore, since existing drug delivery ports have the same orifice diameter, most of the drug will flow out through the drug delivery port closest to the connection end, while a small portion will flow out through the drug delivery port farther from the connection end. In this embodiment, the orifice diameters of the first drug delivery port 20 (whose orifice diameter can be smaller than that of existing drug delivery ports), the second drug delivery port 21, and the third drug delivery port 22 are sequentially increased, which allows for a greater drug delivery amount from the drug delivery ports farther from the connection terminal 1.
[0050] like Figure 1 As shown, optionally, the drug delivery tube 2 also includes a third drug delivery port 22, which is disposed separately from the second drug delivery port 21. The distance from the second drug delivery port 21 to the connecting terminal 1 is less than the distance from the third drug delivery port 22 to the connecting terminal 1, and the diameter of the second drug delivery port 21 is less than the diameter of the third drug delivery port 22. With this configuration, the diameter of the third drug delivery port 22 becomes larger, thereby increasing the amount of drug delivered from the third drug delivery port 22, which is farther away from the connecting terminal 1.
[0051] Please also refer to Figure 2 and Figure 3 Optionally, the administration tube 2 includes an outer tube 23 and an inner administration tube 24, with the inner administration tube 24 passing through the outer tube 23. The outer tube 23 and the connecting terminal 1 (see connection terminal 1 for details) Figure 1 The first administration port 20, the second administration port 21 and the third administration port 22 are connected and pass through the outer tube 23 and the inner administration tube 24.
[0052] Please also refer to Figure 1 and Figure 3 The outer diameter of the inner tube 24 is smaller than the inner diameter of the outer tube 23, and the outer tube 23 is fitted onto the inner tube 24. The starting end of the outer tube 23 can be connected to the end of the connecting terminal 1 by integral molding or welding. The end of the outer tube 23 can be connected to the balloon cavity 6 located in the bladder. The perforated catheter can be made of natural rubber or silicone rubber.
[0053] Please also refer to Figure 1 and Figure 2 Optionally, the perforated catheter also includes a first cap 3, and the connecting terminal 1 includes a first connecting end 10. One end of the first connecting end 10 is connected to one end of the administration tube 2. The first cap 3 is used to cover the other end of the first connecting end 10. The first connecting end 10 and the administration inner tube 24 (please refer to the administration inner tube 24) Figure 3 The connection is maintained. This arrangement prevents the medication in the administration tube 2 from being contaminated (e.g., by airborne germs or by contact with the patient).
[0054] like Figure 2 As shown, the first cap 3 can be conical. The first connecting end 10 can be cylindrical. The end of the first connecting end 10 can be connected to the starting end of the administration tube 2 by integral molding or welding. The first cap 3 can be connected to the starting end of the first connecting end 10 by interference fit, that is, the first cap 3 can be inserted into the starting end of the first connecting end 10 to seal the first connecting end 10. The end of the second connecting end 11 can be connected to the middle of the first connecting end 10 by integral molding or welding.
[0055] like Figure 2As shown, the first connecting end 10 is used to connect to the medicine bag / bottle, and the medicine in the medicine bag / bottle can enter the drug delivery inner tube 24 through the first connecting end 10 (please refer to the drug delivery inner tube 24). Figure 3 For example, when the first cap 3 is opened, the starting end of the first connecting end 10 can be connected to the medicine bag / bottle by plugging it in.
[0056] like Figure 4 As shown, optionally, the perforated catheter also includes a first connecting strap 4, with both ends of the first connecting strap 4 connected to the first connecting end 10 and the first cap 3, respectively. With this configuration, the first cap 3 can remain fixed to the first connecting end 10 even after being opened, preventing the first cap 3 from being lost.
[0057] Please also refer to Figure 3 and Figure 4 The first connecting strip 4 can be elongated. The two ends of the first connecting strip 4 can be integrally formed or welded to the first connecting end 10 and the first cover 3 respectively. The first connecting strip 4 and the second connecting strip 9 (please refer to [reference needed] for the second connecting strip 9)... Figure 2 It can be made of flexible materials such as plastic or rubber.
[0058] Please also refer to Figure 2 and Figure 4 Optionally, the perforated catheter also includes a media delivery tube 5, and the connecting terminal 1 includes a second connecting end 11, which is connected to the first connecting end 10. The media delivery tube 5 is connected to the second connecting end 11, and the direction of the first connecting band 4 away from the first connecting end 10 is different from the direction of the second connecting end 11 away from the first connecting end 10.
[0059] Please also refer to Figure 1 and Figure 2 With this configuration, the first cover 3 will not be blocked by the second connecting end 11 when it is opened or closed, facilitating the opening and closing of the first cover 3. The medium delivery tube 5 can be an inflation tube or a liquid filling tube to inject air or saline into the airbag cavity 6. The direction of the second connecting end 11 away from the first connecting end 10 can be parallel to the YOZ plane and form an acute angle with the negative Z-axis.
[0060] like Figure 2 As shown, the outer diameter of the medium delivery pipe 5 is smaller than the inner diameter of the outer pipe 23. The medium delivery pipe 5 can be inserted into the outer pipe 23. The end of the second connecting end 11 can be integrally formed or welded to the middle of the first connecting end 10. The second connecting end 11 can be cylindrical. The starting end of the medium delivery pipe 5 can be connected to the second connecting end 11 by adhesive bonding or welding.
[0061] like Figure 2As shown, the starting end of the second connecting end 11 can be connected to an air pump or a liquid pump via a plug-in connection. The end of the media delivery tube 5 can be inserted into the balloon cavity 6, and the end of the media delivery tube 5 is provided with a through hole to inject liquid or gas into or withdraw from the balloon cavity 6. The balloon cavity 6 can be placed in the patient's bladder, and when the balloon cavity 6 is inflated or filled with liquid, a perforated catheter can be fixed in the patient's bladder.
[0062] like Figure 2 As shown, optionally, the perforated catheter also includes a second cap 7 and a drainage inner tube 8. The connecting terminal 1 includes a third connecting end 12, one end of which is connected to the first connecting end 10. The drainage inner tube 8 communicates with the third connecting end 12, and the second cap 7 is used to cover the other end of the third connecting end 12. This configuration prevents the drainage inner tube 8 from being contaminated (e.g., by airborne germs or by contact with the patient). This is because the perforated catheter needs to remain in the patient's body for approximately 7 to 28 days.
[0063] like Figure 2 As shown, the outer diameter of the inner drainage tube 8 is smaller than the outer diameter of the outer tube 23. The outer tube 23 can be simultaneously fitted onto both the medium conveying tube 5 and the inner drainage tube 8. The inner drainage tube 8 can be inserted through the outer tube 23. The third connecting end 12 can be cylindrical. The second cover 7 can be conical. The second cover 7 can be connected to the starting end of the third connecting end 12 by an interference fit, that is, the second cover 7 can be inserted into the starting end of the third connecting end 12 to seal the third connecting end 12.
[0064] like Figure 2 As shown, the end of the third connecting end 12 can be connected to the middle of the first connecting end 10 by integral molding or welding. When the second cover 7 is opened, the starting end of the third connecting end 12 can be connected to the urine bag by insertion.
[0065] like Figure 2 As shown, optionally, the perforated catheter also includes a second connecting strap 9, with both ends of the second connecting strap 9 connected to the third connecting end 12 and the second cap 7, respectively. This configuration ensures that the second cap 7 remains fixed to the third connecting end 12 even after being opened, preventing its loss. The second connecting strap 9 can be elongated, and its two ends can be integrally formed or welded to the third connecting end 12 and the second cap 7, respectively.
[0066] Please also refer to Figure 2 and Figure 4Optionally, the direction in which the first connecting strip 4 faces away from the first connecting end 10 is different from the direction in which the second connecting strip 9 faces away from the first connecting end 10. With this configuration, the first cover 3 will not be obstructed by the second connecting strip 9 when opening and closing, and the second cover 7 will not be obstructed by the first connecting strip 4 when opening and closing, facilitating the opening and closing of both the first cover 3 and the second cover 7. For example, the direction in which the first connecting strip 4 faces away from the first connecting end 10 can be parallel to the positive X-axis. The direction in which the second connecting strip 9 faces away from the first connecting end 10 can be parallel to the YOZ plane and form an acute angle with the positive Z-axis.
[0067] Please also refer to Figure 2 and Figure 4 Optionally, the direction in which the first connecting strip 4 faces away from the first connecting end 10 is different from the direction in which the third connecting end 12 faces away from the first connecting end 10. With this configuration, the first cover 3 will not be obstructed by the third connecting end 12 when opening and closing, facilitating the opening and closing of the first cover 3. For example, the direction in which the third connecting end 12 faces away from the first connecting end 10 can be parallel to the YOZ plane and form an acute angle with the positive Z-axis.
[0068] Please also refer to Figure 1 , Figure 2 and Figure 4 When medication needs to be administered to the patient's urethra, the first cap 3 is opened while the second cap 7 is closed. The medication bag / bottle is connected to the first connecting end 10, and the administration tube 2 is inserted into the patient's urethra. The medication in the bag / bottle flows through the first connecting end 10 and the administration tube 2 to the first administration port 20, the second administration port 21, and the third administration port 22, and is then delivered to the patient's urethra. The flow direction of the medication in the administration tube 2 is as follows: Figure 1 The linear arrows in the diagram are shown.
[0069] Please also refer to Figure 1 , Figure 2 and Figure 4 When it is necessary to drain urine from the patient, the second cover 7 is opened while the first cover 3 is closed, the urine bag is connected to the starting end of the third connecting end 12, and the inner drainage tube 8 is inserted into the patient's urethra, with the tip of the inner drainage tube 8 inserted into the bladder. Because the tip of the inner drainage tube 8 has a through hole, urine in the patient's bladder can flow from the inner drainage tube 8 into the urine bag.
[0070] The perforated urinary catheter provided in the embodiments of this application has been described in detail above. For those skilled in the art, based on the ideas of the embodiments of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application. All equivalent modifications or changes made in accordance with the spirit and technical concept of this application should still be covered by the claims of this application.
Claims
1. A perforated urinary catheter, characterized in that, include: Connecting terminals; as well as A drug delivery tube is connected to the connecting terminal. The drug delivery tube includes a first drug delivery hole and a second drug delivery hole, which are disposed separately. The distance from the first drug delivery hole to the connecting terminal is less than the distance from the second drug delivery hole to the connecting terminal, and the diameter of the first drug delivery hole is less than the diameter of the second drug delivery hole.
2. The fenestrated urinary catheter of claim 1, wherein, The drug delivery tube further includes a third drug delivery port, which is disposed separately from the second drug delivery port. The distance from the second drug delivery port to the connecting terminal is less than the distance from the third drug delivery port to the connecting terminal, and the diameter of the second drug delivery port is less than the diameter of the third drug delivery port.
3. The fenestrated urinary catheter of claim 2, wherein, The drug delivery tube includes an outer tube and an inner tube, the inner tube being inserted through the outer tube, the outer tube being connected to the connecting terminal, and the first drug delivery hole, the second drug delivery hole, and the third drug delivery hole being inserted through the outer tube and the inner tube.
4. The fenestrated urinary catheter of claim 3, wherein, It also includes a first cover, the connecting terminal includes a first connecting end, one end of the first connecting end is connected to one end of the drug delivery tube, the first cover is used to cover the other end of the first connecting end, and the first connecting end is connected to the drug delivery inner tube.
5. The fenestrated urinary catheter of claim 4, wherein, It also includes a first connecting strip, the two ends of which are respectively connected to the first connecting end and the first cover.
6. The fenestrated urinary catheter of claim 5, wherein, It also includes a medium delivery tube, and the connection terminal includes a second connection end, which is connected to the first connection end. The medium delivery tube is connected to the second connection end, and the direction of the first connection strip away from the first connection end is different from the direction of the second connection end away from the first connection end.
7. The fenestrated urinary catheter of claim 5, wherein, It also includes a second cover and a drainage inner tube. The connecting terminal includes a third connecting end, one end of which is connected to the first connecting end. The drainage inner tube is connected to the third connecting end. The second cover is used to cover the other end of the third connecting end.
8. The fenestrated urinary catheter of claim 7, wherein, It also includes a second connecting strip, the two ends of which are respectively connected to the third connecting end and the second cover.
9. The fenestrated urinary catheter of claim 8, wherein, The direction in which the first connecting strip is away from the first connecting end is different from the direction in which the second connecting strip is away from the first connecting end.
10. The fenestrated urinary catheter of claim 7, wherein, The direction in which the first connecting strip is away from the first connecting end is different from the direction in which the third connecting end is away from the first connecting end.