Intermittent urinary catheter

Abstract

The utility model discloses an intermittent catheter, including catheter assembly, the proximal end of catheter assembly is used to place into human urethra and forms the urination channel, the container is used to accommodate the proximal end of catheter assembly, handle shell, handle shell with container detachable rotation sleeve joint, and, handle shell with the distal end of catheter assembly sleeve joint forms the structure that both can relatively rotate and can seal the distal end of catheter assembly, and at least one urination hole is seted up on the handle shell, when handle shell rotates to the preset angle, the distal end of catheter assembly communicates with the outside through the urination hole. The utility model can reduce the spilling of lubricating liquid in the use process, and the operation is convenient and simple, can effectively promote user use experience and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of urinary catheters, and more particularly to an intermittent urinary catheter. Background Technology

[0002] Urinary catheters are generally used to drain urine from the bladder. They can be divided into indwelling catheters and intermittent catheters. Indwelling catheters are suitable for patients requiring prolonged urine drainage, such as those who are bedridden for extended periods or have chronic diseases. Intermittent catheters are suitable for patients with neurogenic bladder and non-neurogenic bladder dysfunction, such as those with benign prostatic hyperplasia, urinary incontinence, urinary retention, stroke, and spinal cord injury. They allow for intermittent filling and emptying of the bladder, helping to maintain bladder capacity and restore bladder function. These patients typically require 4-6 catheterizations per day. To reduce urethral injury from repeated insertions and improve the safety and comfort of the insertion process, many catheters have a hydrophilic coating or similar material that provides a smooth surface when wetted.

[0003] Commercially available urinary catheters require numerous and complex preparation and operation steps before use. For example, Chinese invention patent application CN115023257A discloses a urinary catheter kit comprising a catheter and a container holding the catheter and a lubricant kit for catheter lubrication. Before use, the user must puncture the lubricant kit to moisten the catheter. Then, the catheter is removed for catheterization. Chinese invention patent application CN117202956A discloses a catheter assembly comprising a cap containing a wetting agent and at least one puncture member configured to puncture the sealed container and guide the wetting agent into the catheter body. Removing the cap causes the sealed container to be punctured by the puncture member, thereby achieving catheter lubrication. Then, the catheter is removed for catheterization. Chinese invention patent CN112154004A discloses a catheter assembly with an attachable handle, including a catheter that is non-removably placed inside a sleeve. A flip-top is provided on the top of the sleeve for opening the urination channel, and the other side of the sleeve and a tubular housing can seal and store the catheter. The user needs to first open the flip-top, then unscrew the connection between the tubular housing and the sleeve, and remove the catheter (optionally, the tubular housing can be connected to the outer surface of the sleeve as a handle) for catheterization.

[0004] The above examples are cumbersome to operate, and all of them have the problem of easy leakage of lubricant / lubricating solution during the removal of the urinary catheter or placement of the container, which brings a bad user experience. The convenience and ease of use of the urinary catheter to a certain extent affect whether the patient can adhere to intermittent urinary catheterization for a long time.

[0005] How to solve the above problems has become an urgent technical issue. Utility Model Content

[0006] The purpose of this invention is to provide an intermittent urinary catheter that reduces lubricant leakage during use and is easy and simple to operate, thereby improving user experience and efficiency.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] This utility model provides an intermittent urinary catheter, comprising:

[0009] A urinary catheter assembly, the proximal end of which is inserted into the human urethra to form a urination channel;

[0010] A container for holding the proximal end of the catheter assembly;

[0011] The handle shell is detachably and rotatably connected to the container, and the handle shell is sleeved with the distal end of the catheter assembly to form a structure in which the two can rotate relative to each other and can seal the distal end of the catheter assembly. At least one urination hole is provided on the handle shell. When the handle shell is rotated to a preset angle, the distal end of the catheter assembly communicates with the outside through the urination hole.

[0012] Furthermore, the catheter assembly includes a catheter body, the distal end of which is connected to a catheter core. The proximal sidewall of the catheter core is rotatably and sealingly fitted with the distal sidewall of the container. When the handle housing is rotated to a preset angle, the distal end of the catheter core communicates with the outside through a urination hole. The surface of the catheter body is coated with a hydrophilic coating and the container contains water or an aqueous solution to provide lubrication to the surface of the catheter body. Alternatively, the surface of the catheter body is coated with a lubricant, or the container contains a lubricant capable of soaking the catheter body.

[0013] Furthermore, the catheter core includes a core body that communicates with the proximal end of the catheter body. The core body is fitted inside the handle shell and the two can rotate relative to each other. At least one anti-rotation block is provided on the core body. The anti-rotation block engages with the distal end of the container. A sealing ring is fitted on the outer wall of the core body, and a sealing cap is provided at the distal end of the core body. The sealing cap rotates and fits against the handle shell. At least one through hole is provided on the contact surface between the sealing cap and the handle shell. When the through hole at least partially overlaps with the urination hole, the distal end of the core body communicates with the outside world in sequence through the sealing cap, the through hole, and the urination hole.

[0014] Furthermore, the container includes an upper shell that extends through both ends and a lower shell that is open at the distal end. The proximal end of the upper shell and the distal end of the lower shell are coaxially fitted together to form a distally open receiving structure. The distal end of the upper shell is provided with at least one latch, which engages with a rotating locking block. When the proximal end of the catheter assembly is inserted into the container, the catheter assembly, the upper shell, and the handle shell are sequentially fitted together from the inside out. The outer wall of the upper shell is provided with at least one unscrewing locking groove, which is detachably and rotatably connected to the handle shell.

[0015] Furthermore, the unscrewing lock groove includes a straight groove section formed on the outer wall of the far end of the upper shell of the container. The far end of the straight groove section is an open end and the straight groove section extends along the length direction of the upper shell of the container. The proximal end of the straight groove section is connected to an arc groove section. The end of the arc groove section away from the straight groove section extends along the outer periphery of the upper shell of the container, and the end of the arc groove section away from the straight groove section is provided with a locking protrusion. The straight groove section slides with the handle shell, the arc groove section rotates with the handle shell, and the locking protrusion engages with the handle shell.

[0016] Furthermore, the proximal end of the upper shell of the container is interference-fitted or snap-fitted to the distal end of the lower shell of the container, and the outer wall of the proximal end of the upper shell of the container is provided with at least one anti-rotation protrusion, and the inner wall of the distal end of the lower shell of the container is provided with at least one anti-rotation groove, wherein the anti-rotation protrusion and the anti-rotation groove are fitted together.

[0017] Furthermore, the upper shell of the container is provided with an extension at its proximal end, the extension is fitted with the lower shell of the container with a clearance, and the proximal end of the extension is provided with a spill-proof cap that extends through both ends. The inner wall of the spill-proof cap is provided with an annular cap protrusion, and the outer wall of the extension is provided with an annular groove, the annular groove and the annular cap protrusion being snap-fitted together.

[0018] Furthermore, the handle housing includes an upper handle housing, which is rotatably disposed at the distal end of the catheter assembly. The urination port is opened on the upper handle housing. The proximal end of the upper handle housing extends and is connected to a lower handle housing. The inner wall of the lower handle housing is provided with at least one handle housing protrusion, which is rotatably engaged with a rotating locking groove. The inner wall of the lower handle housing is provided with a limiting arc ring for restricting the axial movement of the catheter assembly.

[0019] Furthermore, the inner wall of the upper shell of the handle is provided with a retaining ring and at least one vertical groove, and the outer wall of the lower shell of the handle is provided with an annular retaining groove and at least one vertical protrusion. The retaining ring and the annular retaining groove are engaged in a snap-fit ​​fit, and the vertical groove and the vertical protrusion are fitted together. In addition, the inner wall of the lower shell of the handle is provided with at least one positioning groove, and the catheter assembly is provided with at least one positioning protrusion. When the handle shell is rotated to a preset angle, the positioning groove and the positioning protrusion are matched.

[0020] Furthermore, it also includes a disposable tear-resistant label, the two ends of which are respectively adhered to the handle shell and the container.

[0021] Due to the adoption of the above structure, the beneficial effects of this utility model are as follows:

[0022] This invention utilizes a container filled with lubricating fluid. Before use, the end of the catheter assembly inserted into the urethra is inserted into the container, protecting the proximal end of the catheter assembly and preventing contamination of the hydrophilic coating or lubricant on it. A handle shell, detachably and rotatably fitted to the open end of the container, is also provided. This handle shell rotatably engages with the distal end of the catheter assembly, allowing the proximal end of the catheter assembly to be pulled out of the container simultaneously when the handle shell is rotated to detach it. This eliminates the need for additional lubrication of the catheter assembly during subsequent use. The procedure involves fewer steps, improving ease of operation and effectively avoiding the problem of lubricant leakage that may occur when lubricating after removing the catheter assembly. This enhances the user experience and efficiency. Furthermore, by opening a urination hole on the handle shell, when urination is needed, the handle shell can be rotated to a preset angle to allow the distal end of the catheter assembly to connect with the outside through the urination hole for urination. When urination is not needed, adjusting the relative angle between the handle shell and the catheter assembly can seal the distal end of the catheter assembly and stop urination, thus achieving the effect of intermittent urination.

[0023] The present invention will become clearer from the following description and in conjunction with the accompanying drawings, which are used to explain the embodiments of the present invention. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art 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 This is a schematic diagram of the overall structure of the present invention when assembled as a whole;

[0026] Figure 2 This is a schematic diagram of the urinary catheter assembly of this utility model being pulled out of the container;

[0027] Figure 3 This is an exploded view of the overall structure of this utility model;

[0028] Figure 4 This is one of the cross-sectional views of the urination channel of this utility model when it is in the closed state;

[0029] Figure 5 This is a second cross-sectional view of the urination channel of this utility model when it is in the closed state;

[0030] Figure 6 This is a cross-sectional view of the urination channel of this utility model when it is in the open state;

[0031] Figure 7 This is a schematic diagram of the overall structure of the urinary catheter assembly of this utility model;

[0032] Figure 8 This is an exploded view of the urinary catheter assembly of this utility model;

[0033] Figure 9 This is an exploded view of the structure of the container of this utility model;

[0034] Figure 10 This is one of the structural schematic diagrams of the upper shell of the handle of this utility model;

[0035] Figure 11 This is the second schematic diagram of the structure of the upper shell of the handle of this utility model;

[0036] Figure 12 This is a top view of the upper shell of the handle of this utility model;

[0037] Figure 13 This is a schematic diagram of the structure of the lower shell of the handle of this utility model;

[0038] Figure 14 This is one of the cross-sectional views of the lower shell of the handle of this utility model;

[0039] Figure 15 This is a second cross-sectional view of the lower shell of the handle of this utility model;

[0040] Figure 16 This is a top view of the lower shell of the handle of this utility model;

[0041] Figure 17 This is a schematic diagram of the integrated structure of the upper and lower handle shells of this utility model.

[0042] Figure 18 This is a schematic diagram of the disposable tear-resistant label of this utility model. Detailed Implementation

[0043] 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.

[0044] Please refer to Figures 1 to 6 The present invention provides an intermittent urinary catheter, comprising:

[0045] A urinary catheter assembly 1, the proximal end of which is used to be inserted into the human urethra to form a urination channel;

[0046] Container 2 is used to accommodate the proximal end of the catheter assembly 1. Preferably, the container 2 is gap-fitted with the proximal end of the catheter assembly 1, so that before use, the end of the catheter assembly 1 inserted into the human urethra is always kept in the container 2 and moistened with lubricant. When the proximal end of the catheter assembly 1 can also be pulled out of the container 2, there is no need to lubricate the catheter assembly 1 again during subsequent use. The operation steps are fewer, simpler and more direct, more in line with user habits, and improves the convenience of operation. It also effectively avoids the problem of lubricant leakage that may occur when lubricating after the catheter assembly 1 is pulled out, effectively improving the user experience and efficiency.

[0047] The handle shell 3 is detachably sleeved with the container 2 to form a structure in which the two can rotate relative to each other and can cover the open end of the container 2, thereby fixing and sealing the container 2. The handle shell 3 and the container 2 cooperate to form an outer packaging structure that can house the urinary catheter assembly 1. The handle shell 3 is also a part for the user's hand to hold. The handle shell 3 is sleeved with the distal end of the urinary catheter assembly 1 to form a structure in which the two can rotate relative to each other and can seal the distal end of the urinary catheter assembly 1. At least one urination hole 301 is provided on the handle shell 3. When the housing 3 is rotated to a preset angle, the distal end of the catheter assembly 1 is connected to the outside through the urination hole 301, thereby opening / closing the urination channel by rotating the handle housing 3. The preset angle can be designed according to specific needs. For example, the angle at which the urination channel is opened is equal to the angle at which the handle housing 3 can be detached from the container 2. Thus, when the handle housing 3 can be detached from the container 2, the urination channel is opened simultaneously, completing two predetermined objectives in one operation, which is convenient and quick. Optionally, the handle housing 3 and the container 2 are connected by a threaded connection.

[0048] Please refer to Figure 7 and Figure 8 In this embodiment of the present invention, the urinary catheter assembly 1 includes a urinary catheter body 11, the distal end of which is connected to a catheter core. The side wall of the proximal end of the catheter core is rotatably and sealingly fitted with the side wall of the distal end of the container 2. Furthermore, when the handle shell 3 is rotated to a preset angle, the distal end of the catheter core communicates with the outside through the urination hole 301.

[0049] Preferably, the catheter core includes a core 12 connected to the proximal end of the catheter body 11. The core 12 is detachably fitted inside the handle shell 3 and the two can rotate relative to each other. At least one rotation-blocking block 121 is provided on the core 12. The rotation-blocking block 121 engages with the distal end of the container 2, thereby restricting the rotational freedom of the catheter assembly 1 and preventing the catheter assembly 1 from rotating axially. Furthermore, a sealing ring 122 is fitted on the outer wall of the core 12, and a sealing cap 13 is provided at the distal end of the core 12. The sealing cap 13 rotates and fits against the handle shell 3. At least one through hole 131 is provided on the contact surface between the sealing cap 13 and the handle shell 3. When the through hole 131 at least partially overlaps with the urination hole 301, the distal end of the core 12 communicates with the outside through the sealing cap 13, the through hole 131, and the urination hole 301 in sequence.

[0050] Specifically, the sealing ring 122 is made of elastic materials such as silicone or rubber. When the proximal end of the catheter assembly 1 is inserted into the container 2, the inner and outer side walls of the sealing ring 122 are tightly attached to the outer wall of the core 12 and the inner wall of the container 2, respectively, which can effectively prevent the lubricant from leaking out from the gap between the core 12 and the container 2.

[0051] When the proximal end of the catheter assembly 1 is inserted into the human urethra and the through hole 131 and the urination hole 301 at least partially overlap, urine can be discharged to the outside through the Murphy hole 111, the catheter body 11, the core 12, the sealing cap 13, the through hole 131, and the urination hole 301 in sequence.

[0052] Optionally, the proximal end of the catheter body 11 is provided with at least one Murphy hole 111.

[0053] Optionally, the outer sidewall of the sealing cap 13 is rotatably fitted with the inner sidewall of the handle shell 3 and the through hole 131 is opened on the sidewall of the sealing cap 13, and / or, the distal outer end face of the sealing cap 13 is rotatably fitted with the distal inner end face of the handle shell 3 and the through hole 131 is opened on the distal end face of the sealing cap 13.

[0054] Optionally, the catheter assembly 1 is an integrally molded structure, or the catheter assembly 1 is formed by sequentially bonding or secondary injection molding of the catheter body 11, the core 12, and the sealing cap 13; the core 12 can be made of materials such as TPU / PVC / PP / ABS, and the sealing cap can be made of soft rubber materials such as TPU / silicone rubber.

[0055] Please refer to Figure 9In this embodiment of the present invention, the container 2 includes an upper container shell 21 that extends through both ends and a lower container shell 22 that is open at the distal end. The proximal end of the upper container shell 21 and the distal end of the lower container shell 22 are coaxially sleeved to form a distally open receiving structure. At least one slot 201 is provided at the distal end of the upper container shell 21. The slot 201 engages with a rotating locking block 121. When the catheter assembly 1 is engaged with the container 2, the proximal end of the catheter assembly 1 is inserted into the container 2 from the distal end of the upper container shell 21, and the rotating locking block 121 is engaged into the slot 201 from the distal end of the slot 201. Furthermore, when the proximal end of the catheter assembly 1 is placed into the container 2, the catheter assembly 1, the upper container shell 21, and the handle shell 3 are sequentially sleeved from the inside out. The outer wall of the upper container shell 21 is provided with at least one unscrewing locking groove 23, which is detachably and rotatably connected to the handle shell 3.

[0056] Preferably, the unlocking groove 23 is an inverted L-shaped groove. When the proximal end of the handle shell 3 is fitted onto the upper shell 21 of the container, rotating the handle shell 3 clockwise will cause the unlocking groove 23 and the handle shell 3 to engage in an interlocking state, which can prevent axial movement between the handle shell 3 and the upper shell 21 of the container and effectively prevent the handle shell 3 from separating from the upper shell 21 of the container unintentionally. Rotating the handle shell 3 counterclockwise will unlock the unlocking groove 23 and the handle shell 3, at which point the handle shell 3 can be separated from the upper shell 21 of the container.

[0057] Preferably, the latches 201 are U-shaped, and their number is equal to the number of the anti-rotation latches 121. Since the proximal end of the catheter assembly 1 is fitted with the container 2 with a clearance and the distal end of the catheter assembly 1 is rotatably sleeved with the handle shell 3, the catheter assembly 1 has no restricted rotational freedom before use and can rotate axially at will. There is a possibility that the catheter assembly 1 may rotate relative to the handle shell 3 to a preset angle that would cause the distal end of the catheter assembly 1 to communicate with the outside through the urination hole 301. Therefore, by providing at least one latch 201 at the distal end of the upper shell 21 of the container, before use, while the proximal end of the catheter assembly 1 is fitted with the container 2, the rotational freedom of the catheter assembly 1 is restricted by the latch 201. This can effectively prevent the catheter assembly 1 from rotating relative to the handle shell 3 unplannedly, and prevent the distal end of the catheter assembly 1 from communicating with the outside through the urination hole 301 before use.

[0058] In this embodiment of the present invention, the unscrewing lock groove 23 includes a straight groove section 231 formed on the outer wall of the far end of the upper shell 21 of the container. The far end of the straight groove section 231 is an open end and the straight groove section 231 extends along the length direction of the upper shell 21 of the container. Furthermore, the proximal end of the straight groove section 231 is connected to an arc groove section 232. The end of the arc groove section 232 away from the straight groove section 231 extends along the outer periphery of the upper shell 21 of the container, and the end of the arc groove section 232 away from the straight groove section 231 is provided with a locking protrusion 233. The straight groove section 231 is slidably engaged with the handle shell 3, the arc groove section 232 is rotatably engaged with the handle shell 3, and the locking protrusion 233 is engaged with the handle shell 3. In use, the handle shell 3 is aligned with the open end of the straight groove section 231, and can be fitted onto the upper shell 21 of the container along the axial direction of the upper shell 21. When the handle shell 3 is fitted to a preset depth, the handle shell 3 is rotated. The part of the handle shell 3 that mates with the upper shell 21 can be locally elastically deformed and then pass over the locking protrusion 233 to lock onto the end of the arc groove section 232 away from the straight groove section 231. Thus, the axial movement of the handle shell 3 is restricted by the arc groove section 232 and the axial rotation of the handle shell 3 is restricted by the locking protrusion 233, forming an interlocking state, which effectively prevents the handle shell 3 from separating from the upper shell 21 of the container unintentionally.

[0059] In this embodiment of the invention, the proximal end of the upper shell 21 and the distal end of the lower shell 22 are press-fitted or snap-fitted together, allowing them to rotate synchronously. They are also detachable for easy assembly. Furthermore, the outer wall of the proximal end of the upper shell 21 has at least one anti-rotation protrusion 211, and the inner wall of the distal end of the lower shell 22 has at least one anti-rotation groove 221. The anti-rotation protrusion 211 engages with the anti-rotation groove 221. The number of anti-rotation protrusions 211 is equal to or less than the number of anti-rotation grooves 221, thereby effectively preventing relative rotation between the upper shell 21 and the lower shell 22.

[0060] Optionally, the upper shell 21 and the lower shell 22 of the container are connected as one unit by ultrasonic welding, snap fastening, threading, interference fitting, bonding and other processes.

[0061] In this embodiment of the present invention, an extension 212 is provided at the proximal end of the upper shell 21 of the container, the extension 212 is clearance-fitted with the lower shell 22 of the container, and a spill-proof cap 213 with both ends passing through is provided at the proximal end of the extension 212.

[0062] Specifically, the anti-spray cap 22 is made of silicone, and the side wall of the anti-spray cap 213 is located between the extension 212 and the lower shell 22 of the container. The anti-spray cap 22 has a small hole at its proximal end. When the catheter assembly 1 is pulled out of the container 2 by force, the anti-spray cap 213 can "scrape off" the excess lubricant on the catheter body 11, preventing the lubricant on the catheter body 11 from dripping. In addition, when the container 2 is placed horizontally, the liquid level is lower than the small hole. When the liquid level in the container 2 submerges the small hole or when the opening of the container 2 is placed downward, the lubricant will not easily flow out of the small hole due to the liquid tension because the inner diameter of the small hole is very small. Therefore, the container 2 will not leak lubricant when placed on a table or at any angle or even when the opening is downward.

[0063] Preferably, the inner wall of the anti-spray cap 213 is provided with an annular cap protrusion 214, and the outer wall of the extension 212 is provided with an annular groove 215. The annular groove 215 and the annular cap protrusion 214 are engaged in a snap-fit ​​fit, so that the anti-spray cap 213 can be detachably installed on the extension 212 for easy assembly.

[0064] Optionally, the extension 212 is bonded to the spill-proof cap 213, which simplifies the manufacturing process.

[0065] Please refer to Figures 10 to 16In this embodiment of the present invention, the handle shell 3 includes an upper handle shell 31, which is rotatably covered at the distal end of the catheter assembly 1. The urination hole 301 is located on the upper handle shell 31, preferably at the distal end face of the upper handle shell 31. Furthermore, a lower handle shell 32 extends from the proximal end of the upper handle shell 31. At least one handle shell protrusion 33 is provided on the inner wall of the lower handle shell 32. The handle shell protrusion 33 is rotatably engaged with the locking groove 23. The handle shell protrusion 33 is slid from the open end of the straight groove section 231 to the proximal end of the straight groove section 231, and then rotated to slide to the end of the arc groove section 232 away from the straight groove section 231. Force is applied to cause the handle shell protrusion 33 to undergo local elastic deformation, after which it passes the locking protrusion 233 and engages with the arc groove section 231. 2. At the end away from the straight groove section 231, the arc groove section 232 restricts the axial movement of the handle shell 3 and restricts the axial rotation of the handle shell 3 through the locking protrusion 233, forming an interlocking state. This allows the catheter assembly 1, container 2, and handle shell 3 to be assembled into a whole, making it easy to carry. The catheter assembly 1, container 2, and handle shell 3 form a closed space, which can effectively prevent the lubricating fluid in the container 2 from leaking to the outside and the catheter assembly 1 from being contaminated by the outside before use. In addition, the handle shell protrusion 33 will generate obvious resistance and make a "click" sound when passing over the locking protrusion 233, which makes it easy for the user to judge whether the handle shell 3 and the container 2 are in an interlocking / unlocking state. In addition, the inner wall of the lower handle shell 32 is provided with a limiting arc ring 34 for restricting the axial movement of the catheter assembly 1. Specifically, the distal outer diameter of the core 12 is larger than its proximal outer diameter, forming a stepped structure. The distal end face of the limiting arc ring 34 abuts against the proximal end face of the stepped structure, thereby preventing relative movement between the catheter assembly 1 and the handle shell 3 without affecting relative rotation, effectively avoiding separation. Preferably, there are two limiting arc rings 34, symmetrically arranged on both sides of the inner wall of the lower handle shell 32; or, the limiting arc ring 34 is a complete circular ring; optionally, the lower handle shell 32 and the upper container shell 21 are interlocked by a threaded connection.

[0066] Preferably, the inner wall of the upper handle shell 31 is provided with a retaining ring 311 and at least one vertical groove 312, and the outer wall of the lower handle shell 32 is provided with an annular groove 321 and at least one vertical protrusion 322. The retaining ring 311 and the annular groove 321 are engaged to achieve a detachable connection between the upper handle shell 31 and the lower handle shell 32. The vertical groove 312 and the vertical protrusion 322 are fitted together to prevent the upper handle shell 31 from rotating relative to the lower handle shell 32. The inner wall of the lower handle shell 32 is provided with at least one positioning groove 323, and the catheter assembly 1 is provided with at least one positioning protrusion (not shown). When the handle shell 3 rotates to a preset angle, the positioning groove 323 matches the positioning protrusion. When the urination channel is in the open / closed state, the positioning groove 323 matches the positioning protrusion, which makes it easy to judge the state of the urination channel by the feedback of the rotation. At the same time, it can also effectively prevent the catheter assembly 1 from easily rotating relative to the handle shell 3. However, under a certain force, the positioning protrusion can be disengaged from the positioning groove 323 and rotate. Preferably, the number of the positioning groove 323 and the positioning protrusion are four and arranged in a circular array.

[0067] Please refer to Figure 17 Optionally, the upper handle shell 31 and the lower handle shell 32 are connected as one unit by ultrasonic welding, snap fastening, threading, interference fitting, bonding and other processes.

[0068] Please refer to Figure 18 This invention also includes a disposable tear-resistant label 4, the two ends of which are respectively adhered to the handle shell 3 and the container 2. When the user unscrews the handle shell 3, the disposable tear-resistant label 3 is destroyed, and the urination channel is opened. One operation can accomplish three predetermined objectives, making the operation convenient and quick.

[0069] In this invention, the surface of the catheter body 11 is coated with a hydrophilic coating and the container 2 contains water or an aqueous solution to provide lubrication to the surface of the catheter body 11. Alternatively, the surface of the catheter body 11 is coated with a lubricant, or the container 2 contains a lubricant capable of soaking the catheter body 11. Thus, when the catheter body 11 is pulled out of the container 2, no additional lubrication is required, saving operational steps and improving operational convenience.

[0070] In use, the user holds the handle shell 3 and rotates it counterclockwise, causing the handle shell protrusion 33 to pass over the locking protrusion 233 and slide along the arc groove section 232 to the proximal end of the straight groove section 231. Then, the user pulls it outward forcefully, causing the handle shell protrusion 33 to slide along the straight groove section 231 away from the container 2. At the same time, the handle shell 3 causes the proximal end of the catheter body 11 to be pulled out of the container 2 until the catheter assembly 1 is completely separated from the container 2. At this time, the surface of the catheter body 11 is coated with a hydrophilic coating and is contaminated with water or aqueous solution, or the surface of the catheter body 11 is contaminated with lubricating fluid. Meanwhile, the excess water, aqueous solution, or lubricating fluid on the catheter body 11 will be scraped off by the anti-spill cap 213 to prevent dripping. Thus, the proximal end of the catheter body 11 can be inserted into the human urethra to form a urination channel without additional lubrication. The operation is convenient and simple, which can effectively improve the user experience and efficiency.

[0071] The preferred embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above. Devices and structures not described in detail herein should be understood as being implemented in a conventional manner within the art. Any person skilled in the art can make many possible variations and modifications to the technical solutions of this utility model using the disclosed methods and techniques, or modify them into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. This does not affect the essential content of this utility model. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the content of the technical solution of this utility model, still fall within the protection scope of the technical solution of this utility model.

Claims

1. An intermittent urinary catheter, characterized in that, include: A urinary catheter assembly (1), the proximal end of which is used to be inserted into the human urethra to form a urination channel; Container (2) for receiving the proximal end of the catheter assembly (1); The handle shell (3) is detachably and rotatably connected to the container (2). The handle shell (3) is connected to the distal end of the catheter assembly (1) to form a structure in which the two can rotate relative to each other and can seal the distal end of the catheter assembly (1). At least one urination hole (301) is provided on the handle shell (3). When the handle shell (3) is rotated to a preset angle, the distal end of the catheter assembly (1) communicates with the outside through the urination hole (301).

2. The intermittent urinary catheter according to claim 1, characterized in that: The catheter assembly (1) includes a catheter body (11), the distal end of which is connected to a catheter core. The sidewall of the proximal end of the catheter core is rotatably and sealed to the sidewall of the distal end of the container (2). When the handle shell (3) is rotated to a preset angle, the distal end of the catheter core is connected to the outside through the urination hole (301). The surface of the catheter body (11) is coated with a hydrophilic coating and the container (2) is filled with water or an aqueous solution to form a lubricating function on the surface of the catheter body (11). Alternatively, the surface of the catheter body (11) is coated with a lubricant, or the container (2) is filled with a lubricant that can soak the catheter body (11).

3. An intermittent urinary catheter according to claim 2, characterized in that: The catheter core includes a core (12) that is connected to the proximal end of the catheter body (11). The core (12) is fitted inside the handle shell (3) and the two can rotate relative to each other. At least one anti-rotation block (121) is provided on the core (12). The anti-rotation block (121) engages with the distal end of the container (2). A sealing ring (122) is fitted on the outer wall of the core (12), and a sealing cap (13) is provided at the distal end of the core (12). The sealing cap (13) rotates and fits against the handle shell (3). At least one through hole (131) is provided on the contact surface between the sealing cap (13) and the handle shell (3). When the through hole (131) and the urination hole (301) are at least partially overlapped, the distal end of the core (12) communicates with the outside through the sealing cap (13), the through hole (131), and the urination hole (301) in sequence.

4. An intermittent urinary catheter according to claim 1, characterized in that: The container (2) includes a container upper shell (21) that extends through both ends and a container lower shell (22) that is open at the distal end. The proximal end of the container upper shell (21) and the distal end of the container lower shell (22) are coaxially sleeved to form a distally open receiving structure. The distal end of the container upper shell (21) is provided with at least one latch (201), which engages with a rotating locking block (121). When the proximal end of the catheter assembly (1) is placed into the container (2), the catheter assembly (1), the container upper shell (21), and the handle shell (3) are sleeved together from the inside out. The outer wall of the container upper shell (21) is provided with at least one rotating locking groove (23), which is detachably and rotatably connected to the handle shell (3).

5. An intermittent urinary catheter according to claim 4, characterized in that: The unscrewing lock groove (23) includes a straight groove section (231) formed on the outer wall of the far end of the upper shell (21) of the container. The far end of the straight groove section (231) is an open end and the straight groove section (231) extends along the length direction of the upper shell (21) of the container. The near end of the straight groove section (231) is connected to an arc groove section (232). The end of the arc groove section (232) away from the straight groove section (231) extends along the outer periphery of the upper shell (21) of the container, and the end of the arc groove section (232) away from the straight groove section (231) is provided with a locking protrusion (233). The straight groove section (231) is slidably engaged with the handle shell (3), the arc groove section (232) is rotatably engaged with the handle shell (3), and the locking protrusion (233) is engaged with the handle shell (3).

6. An intermittent urinary catheter according to claim 4 or 5, characterized in that: The proximal end of the upper shell (21) of the container is press-fitted or snap-fitted to the distal end of the lower shell (22) of the container. The outer wall of the proximal end of the upper shell (21) of the container is provided with at least one anti-rotation protrusion (211), and the inner wall of the distal end of the lower shell (22) of the container is provided with at least one anti-rotation groove (221). The anti-rotation protrusion (211) and the anti-rotation groove (221) are fitted together.

7. An intermittent urinary catheter according to claim 4 or 5, characterized in that: An extension (212) is provided at the proximal end of the upper shell (21) of the container. The extension (212) is clearance-fitted with the lower shell (22) of the container. A spill-proof cap (213) with both ends passing through is provided at the proximal end of the extension (212). An annular cap protrusion (214) is provided on the inner wall of the spill-proof cap (213). An annular groove (215) is provided on the outer wall of the extension (212). The annular groove (215) and the annular cap protrusion (214) are snap-fitted together.

8. An intermittent urinary catheter according to any one of claims 1 to 5, characterized in that: The handle housing (3) includes an upper handle housing (31), which is rotatably covered at the distal end of the catheter assembly (1). The urination hole (301) is opened on the upper handle housing (31). Furthermore, the proximal end of the upper handle housing (31) is connected to a lower handle housing (32). The inner wall of the lower handle housing (32) is provided with at least one handle housing protrusion (33), which is rotatably engaged with the unscrewing locking groove (23). Additionally, the inner wall of the lower handle housing (32) is provided with a limiting arc ring (34) for restricting the axial movement of the catheter assembly (1).

9. An intermittent urinary catheter according to claim 8, characterized in that: The inner wall of the upper shell (31) of the handle is provided with a retaining ring (311) and at least one vertical groove (312), and the outer wall of the lower shell (32) of the handle is provided with an annular groove (321) and at least one vertical protrusion (322). The retaining ring (311) and the annular groove (321) are engaged in a snap-fit ​​fit, and the vertical groove (312) and the vertical protrusion (322) are fitted together. The inner wall of the lower shell (32) of the handle is provided with at least one positioning groove (323), and the catheter assembly (1) is provided with at least one positioning protrusion. When the handle shell (3) is rotated to a preset angle, the positioning groove (323) matches the positioning protrusion.

10. An intermittent urinary catheter according to any one of claims 1 to 5, characterized in that: It also includes a disposable tear-resistant label (4), the two ends of which are respectively bonded to the handle shell (3) and the container (2).

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