Anti-backflow urine collector fixed by means of pressurization

Abstract

An anti-backflow urine collector fixed by means of pressurization, comprising: a wearable fixing belt (1) worn on the lower body of a patient; a housing (4) detachably mounted on the wearable fixing belt (1); a pressurized sealing device (2) arranged in the housing (4); and a urine collection bag (3), an inlet end of which is inserted into the housing (4), passes through the pressurized sealing device (2), and is fixed on an outer wall of the housing (4) after being flanged. The penis of the patient is placed in the housing (4), and the outer wall of the penis is surrounded and wrapped by the pressurized sealing device (2), so as to prevent urine from flowing back and leaking.

Description

A backflow prevention urine collection device that is fixed by pressure Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an anti-backflow urine collection device that is fixed by pressure. Background Technology

[0002] Currently, urinary care for individuals with urinary incontinence has become a challenge for the nursing profession, placing a heavy workload on families and hospitals. Current care measures often involve inserting a catheter and connecting it to a urine collection bag. For long-term urinary incontinence, continuous indwelling and repeated catheter insertion and replacement are necessary. Each insertion and removal of the catheter is not only extremely painful for the patient but can also damage the urethra and easily lead to urinary tract infections. Ordinary urine collection devices are prone to urine leakage, causing the perineum and scrotum to remain damp, easily leading to eczema and even skin breakdown. They are also difficult to fix and inconvenient to wear. If a urine collection device could be provided that has good sealing properties, does not damage the patient's urethra, is easy to wear, and prevents urine backflow, it would greatly facilitate the care of patients with urinary incontinence (including those in a coma, paralyzed, undergoing general anesthesia, or long-term bedridden conditions). Summary of the Invention

[0003] To address the aforementioned technical problems, the present invention provides an anti-backflow urine collection device that is fixed by applying pressure.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows:

[0005] A backflow prevention urine collection device fixed by pressure, comprising:

[0006] Wearable fixation strap, worn on the patient's lower body;

[0007] The outer shell is detachably mounted on a wearable strap;

[0008] A pressure sealing device is installed inside the housing;

[0009] The urine collection bag has its inlet end inserted into the outer shell, passing through the pressure sealing device, and then fixed to the outer wall of the outer shell after being turned over.

[0010] The patient's penis is placed inside the outer shell, and the outer wall of the penis is surrounded and sealed by a pressure sealing device to prevent urine from flowing back and leaking out.

[0011] After the inlet end of the urine collection bag is fixed to the outer wall of the outer shell, a urine bag fixing ring is fitted onto the flange; the wearable fixing strap is a T-shaped structure composed of a horizontal belt around the waist and a vertical belt in the crotch.

[0012] The pressure sealing device includes:

[0013] The first elastic sealing ring is fitted and installed inside the housing;

[0014] The push ring is fitted inside the housing and located on one side of the first elastic sealing ring;

[0015] The push tube has one end set inside the outer casing and is fixedly connected to the side wall of the push ring, and its outer wall is provided with threads;

[0016] A rotating ring is rotatably mounted on the outer wall of the housing and threadedly connected to the outer wall of the push tube;

[0017] The first annular groove is set on the outer wall of the outer shell. The first elastic sealing ring is inserted into the inlet end of the urine collection bag. After being turned over, it covers the first annular groove and is fixed by the urine bag fixing ring.

[0018] The outer shell has a first fixing plate on both sides, and the first fixing plate has several holes for connecting to the wearable fixing strap.

[0019] The pressure sealing device includes:

[0020] The airbag fixing groove is located inside the outer shell;

[0021] An annular airbag is installed in the airbag fixing groove, and its airbag inflation port passes through the outer shell and is installed on the outer wall of the outer shell;

[0022] Air filling port seal, which is adapted to be installed on the air filling port of the airbag;

[0023] The second annular groove is set on the outer wall of the outer shell. The annular air bladder is inserted into the inlet end of the urine collection bag, and after being turned over, it covers the second annular groove and is fixed by the urine bag fixing ring.

[0024] The pressure sealing device includes:

[0025] The second elastic sealing ring is fitted and installed inside the housing;

[0026] The shrink band wraps around the outer wall of the second elastic sealing ring. One end of the shrink band is fixed to the inner wall of the outer shell, and the other end is set on the outside of the outer shell through the pull-out opening on the outer shell. Several positive locking teeth are evenly distributed on the outer wall of the shrink band.

[0027] An elastic locking plate is installed on the pull-out opening, and its inner side is provided with reverse locking teeth that correspond to the forward locking teeth, which are used to lock and position the shrink band.

[0028] The third annular groove is set on the outer wall of the outer shell. The second elastic sealing ring is inserted into the inlet end of the urine collection bag, and after being turned over, it covers the third annular groove and is fixed by the urine bag fixing ring.

[0029] The pressure sealing device includes:

[0030] The second elastic sealing ring is fitted and installed inside the housing;

[0031] The first, second, third, and fourth sockets are respectively located on the side walls of the outer casing.

[0032] At least one strap, one end of which is inserted into the housing through the third socket, passes around the upper part of the outer wall of the second elastic sealing ring and then passes out through the first socket, then enters the second socket, passes around the lower part of the outer wall of the second elastic sealing ring again and then passes out through the fourth socket.

[0033] Two second fixing plates are respectively set on both sides of the outer shell, and several holes are provided on them for connecting to the wearable fixing strap;

[0034] The clamping and positioning component is located on the outside of the housing and clamps and locks both ends of the strap to prevent the strap from retracting into the housing.

[0035] The fifth annular groove is set on the outer wall of the outer shell. The second elastic sealing ring is inserted into the inlet end of the urine collection bag, and after being turned over, it covers the fifth annular groove and is fixed by the urine bag fixing ring.

[0036] The strap consists of two straps. One end of the second strap is inserted into the outer shell through the first insertion hole, passes around the upper part of the outer wall of the second elastic sealing ring, and then passes out through the third insertion hole. It then enters the fourth insertion hole, passes around the lower part of the outer wall of the second elastic sealing ring again, and then passes out through the second insertion hole. Both ends of the second strap are also clamped and locked by the clamping and positioning components.

[0037] Remove the outer shell and pressure sealing device and replace them with a retaining ring. A soft sealing ring is installed on the inner wall of the retaining ring. Semi-circular positioning rings are respectively snapped into both sides of the retaining ring. The semi-circular positioning rings are connected to the wearable retaining strap through the retaining ring.

[0038] The inlet end of the urine collection bag passes through a soft sealing ring, and after being turned over, it covers the outer wall of the fixing ring. The urine collection bag is then fixed by snapping on a semi-circular positioning ring, and the positioning hole on the inlet end of the urine collection bag is then fitted into the fixing ring.

[0039] Remove the outer shell and pressure sealing device and replace them with a third elastic sealing ring. The outer wall of the third elastic sealing ring is provided with a fourth annular groove. The third elastic sealing ring is provided with mounting through holes on both sides for connecting with a wearable fixing strap. The inlet end of the urine collection bag is inserted into the third elastic sealing ring, and after being turned over, it covers the fourth annular groove and is fixed by the urine bag fixing ring.

[0040] The urine collection bag includes:

[0041] Bag body;

[0042] The inlet of the urinary catheter is either funnel-shaped or cylindrical with a straight opening, and its outlet is connected to the inlet of the bag.

[0043] The catheter interface is located at the outlet end of the bag.

[0044] The beneficial effects of this invention are as follows: This invention utilizes a pressure-sealing device to fix the urine collection device to the patient's urethra. Pressure is applied for sealing and fixation, ensuring that the inner diameter of the elastic sealing ring or annular airbag matches the outer diameter of the male penis. This secures the pressure-sealing device and urine collection bag to the outside of the penis. Because their inner and outer diameters match and can be moderately compressed, urine leakage is prevented. This invention provides excellent sealing without damaging the patient's urethra, is easy to wear, effectively prevents urine reflux, directly solves the problem of bedwetting in patients with urinary incontinence, and effectively prevents inconvenience caused by urine leakage. Attached Figure Description

[0045] Figure 1 is a diagram showing the usage state of the present invention.

[0046] Figure 2 is a schematic diagram of the structure of the present invention.

[0047] Figure 3 is a structural schematic diagram of Embodiment 1 of the present invention.

[0048] Figure 4 is a structural schematic diagram of Embodiment 2 of the present invention.

[0049] Figure 5 is a structural schematic diagram of Embodiment 3 of the present invention.

[0050] Figure 6 is a structural schematic diagram of Embodiment 5 of the present invention.

[0051] Figure 7 is a structural schematic diagram of Embodiment 4 of the present invention.

[0052] Figure 8 is a side view of Embodiment 4 of the present invention.

[0053] Figure 9 is a cross-sectional view of Embodiment 4 of the present invention.

[0054] Figure 10 is a structural schematic diagram of Embodiment 6 of the present invention.

[0055] Figure 11 is a front view of Embodiment 6 of the present invention.

[0056] Figure 12 is a side view of Embodiment 6 of the present invention.

[0057] Figure 13 is a schematic diagram of the funnel-shaped inlet tube of the urine collection bag of the present invention.

[0058] Figure 14 is a schematic diagram of the cylindrical straight-mouthed urine inlet tube of the urine collection bag of the present invention. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0060] Example 1

[0061] As shown in Figures 1 to 3 and Figures 13 and 14, a backflow prevention urine collection device fixed by pressure includes: a wearable fixing strap 1, worn on the patient's lower body; a shell 4, detachably mounted on the wearable fixing strap 1; a pressure sealing device 2, disposed inside the shell 4; and a urine collection bag 3, the inlet end of which is inserted into the shell 4, passes through the pressure sealing device 2, and is fixed to the outer wall of the shell 4 after being turned over; wherein, the patient's penis is placed inside the shell 4, and the outer wall of the penis is surrounded and wrapped by the pressure sealing device 2 to prevent backflow leakage.

[0062] After the inlet end of the urine collection bag 3 is fixed to the outer wall of the outer shell 4, a urine bag fixing ring 11 is fitted onto the flange; the wearable fixing strap 1 is a T-shaped structure composed of a waist horizontal strap and a crotch vertical strap.

[0063] The pressurized sealing device 2 includes: a first elastic sealing ring 7, adapted and installed inside the housing 4; a push ring 6, adapted and installed inside the housing 4, located on one side of the first elastic sealing ring 7; a push tube 5, one end of which is located inside the housing 4 and fixedly connected to the side wall of the push ring 6, and its outer wall is provided with threads; a rotating ring 9, which is rotatably installed on the outer wall of the housing 4 and threadedly connected to the outer wall of the push tube 5; a first annular groove 10, which is provided on the outer wall of the housing 4, the inlet end of the urine collection bag 3 is inserted into the first elastic sealing ring 7, and after being turned over, it covers the first annular groove 10 and is fixed by the urine bag fixing ring 11; wherein, both sides of the housing 4 are provided with a first fixing plate 8, and the first fixing plate 8 is provided with several insertion holes for connecting with the wearable fixing strap 1.

[0064] The urine collection bag 3 includes: a bag body 302; a urine inlet tube 301, the inlet end of which is funnel-shaped or cylindrical straight-mouthed, and the outlet end of which is connected to the inlet end of the bag body 302; and a catheter interface 12, which is disposed on the outlet end of the bag body 302.

[0065] The inlet end of the urine inlet tube 301 is funnel-shaped or cylindrical straight-mouthed, which is convenient for folding and fixing. When connecting the urine collection bag 3, first pass the urine inlet tube 301 through the inside of the pressure sealing device 2, fold the funnel or cylindrical straight-mouthed edge to cover the first annular groove 10, and then fix it by the urine bag fixing ring 11. The urine collection bag 3 is made of soft material and can be used once. The bottom of the urine collection bag 3 can be provided with a catheter interface 12 to connect with a catheter. When catheterization is needed, the catheter can be connected to the catheter interface of the urine collection bag 3.

[0066] In this embodiment, rotating the rotating ring 9 causes the pushing ring 6 to move continuously into the outer shell 4. Under the pressure of the groove inside the outer shell 4 and the pushing ring 6, the first elastic sealing ring 7 deforms and expands inward, reducing its inner diameter. This allows the inner diameter of the first elastic sealing ring 7 to match the outer diameter of the male penis, thereby fixing the invention to the outside of the male penis. Since the inner and outer diameters of the two are matched and can be moderately compressed to prevent urine leakage, the outer shell 4 can be provided with a first fixing plate 8 connected to a wearable fixing strap 1 to fix the device in place. One end of the outer shell 4 can also be provided with a urine bag fixing ring 11. The inner diameter of the urine bag fixing ring 11 matches the outer diameter of one end of the outer shell 4. The urine bag fixing ring 11 can be separated from the outer shell 4, and the urine bag fixing ring 11 can fix the urine collection bag 3 to the outside of the outer shell 4, facilitating the loading and unloading of the urine collection bag.

[0067] Example 2

[0068] As shown in Figures 1, 2, and 4, the pressure sealing device 2 includes: an airbag fixing groove 16, which is disposed inside the outer shell 4; an annular airbag 15, which is disposed inside the airbag fixing groove 16, with its airbag inlet 14 passing through the outer shell 4 and disposed on the outer wall of the outer shell 4; an air inlet sealing element 13, which is adapted to be installed on the airbag inlet 14; and a second annular groove 36, which is disposed on the outer wall of the outer shell 4. The inlet end of the urine collection bag 3 is inserted into the annular airbag 15, and after being turned over, it covers the second annular groove 36 and is fixed by the urine bag fixing ring 11.

[0069] In this embodiment, after the annular airbag 15 is pressurized, the annular airbag 15 expands towards its center, so that the inner diameter of the annular airbag 15 matches the outer diameter of the male penis, thereby fixing the urine collection bag 3 to the outside of the male penis. Since the inner and outer diameters of the two are matched and can be squeezed appropriately, urine leakage is prevented. The inner diameter of the urine bag fixing ring 11 matches the outer diameter of one end of the outer shell 4. The urine bag fixing ring 11 can be separated from the outer shell 4. The urine bag fixing ring 11 can fix the urine collection bag 3 to the outer shell 4, which facilitates the loading and unloading of the urine collection bag 3.

[0070] Example 3

[0071] As shown in Figures 1, 2, and 5, the pressure sealing device 2 includes: a second elastic sealing ring 24, which is fitted and installed inside the outer shell 4; a shrink band 19, which wraps around the outer wall of the second elastic sealing ring 24, with one end fixed to the inner wall of the outer shell 4 and the other end set outside the outer shell 4 through a pull-out opening on the outer shell 4, and a number of forward locking teeth are evenly distributed on the outer wall of the shrink band 19; an elastic locking plate 17, which is set on the pull-out opening, and has reverse locking teeth 18 on its inner side that correspond to the forward locking teeth, for locking and positioning the shrink band 19; and a third annular groove 25, which is set on the outer wall of the outer shell 4, with the inlet end of the urine collection bag 3 inserted into the second elastic sealing ring 24, and after being turned over, covering the third annular groove 25, and fixed by the urine bag fixing ring 11.

[0072] In this embodiment, when in use, the elastic plate 17 is lifted upwards, causing the reverse locking teeth 18 to disengage from the forward locking teeth on the outer wall of the contraction band 19. The contraction band 19 is then pulled, moving outwards through the pull-out port, causing it to contract inwards towards the second elastic sealing ring 24. This continuously compresses the second elastic sealing ring 24, causing it to deform and bulge outwards, reducing its inner diameter. This allows the inner diameter of the second elastic sealing ring 24 to match the outer diameter of the male penis, thereby fixing the device and the urine collection bag 3 to the outside of the male penis. After fixing, the elastic plate 17 is released, causing the reverse locking teeth 18 to engage with the forward locking teeth on the outer wall of the contraction band 19, thus locking the contraction band 19. A urine bag fixing ring 11 can also be provided at one end of the outer shell 4. The inner diameter of the urine bag fixing ring 11 matches the outer diameter of one end of the outer shell 4. The urine bag fixing ring 11 can be separated from the outer shell 4, allowing the urine collection bag 3 to be fixed to the outside of the outer shell 4, facilitating the loading and unloading of the urine collection bag 3.

[0073] Example 4

[0074] As shown in Figures 1, 2, and 7 to 9, the pressure sealing device 2 includes: a second elastic sealing ring 30, adapted and installed inside the housing 4; a first insertion hole 31, a second insertion hole 32, a third insertion hole 37, and a fourth insertion hole 38, respectively disposed on the side walls of the housing 4; and at least one strap 27, one end of which is inserted into the housing 4 through the third insertion hole 37, passes around the upper part of the outer wall of the second elastic sealing ring 30, exits through the first insertion hole 31, enters the second insertion hole 32, passes around the lower part of the outer wall of the second elastic sealing ring 30, and exits through the third insertion hole 37. The fourth insertion hole 38 protrudes; two second fixing plates 26 are respectively set on both sides of the outer shell 4, and are provided with several insertion holes for connecting with the wearable fixing strap 1; the clamping and positioning component 28 is set on the outside of the outer shell 4, clamping and locking both ends of the strap 27 to prevent the strap 27 from retracting into the outer shell 4; the fifth annular groove 33 is set on the outer wall of the outer shell 4, the inlet end of the urine collection bag 3 is inserted into the second elastic sealing ring 30, and after being turned over, it covers the fifth annular groove 33 and is fixed by the urine bag fixing ring 11.

[0075] The clamping and positioning assembly 28 includes a sliding tube 282, with an upper pressure rod 281 and a lower pressure rod 284 inserted into its upper and lower ends respectively. The upper pressure rod 281 and the lower pressure rod 284 are connected by a spring 283. Two through holes are provided on each side of the outer wall of the sliding tube 282 for inserting straps 27. The upper pressure rod 281 and the lower pressure rod 284 also have through holes corresponding to the through holes on the outer wall of the sliding tube 282 for inserting straps 27. When in use, the upper pressure rod 281 and the lower pressure rod 284 are pressed into the sliding tube 282. At this time, the through holes on the outer wall of the sliding tube 282 correspond to the through holes on the upper pressure rod 281 and the lower pressure rod 284, and the strap 27 can be pulled freely. After the upper pressure rod 281 and the lower pressure rod 284 are released, due to the action of the spring 283, the upper pressure rod 281 and the lower pressure rod 284 are reset, and their respective through holes are misaligned, clamping the strap 27. At this time, the strap 27 is limited and locked.

[0076] In practice, clamps can also be used to hold and position the positioning component 28.

[0077] Among them, there can be two straps 27. One end of the second strap is inserted into the outer shell 4 through the first insertion hole 31, passes around the upper part of the outer wall of the second elastic sealing ring 30, and then passes out through the third insertion hole 37. Then it enters the fourth insertion hole 38, passes around the lower part of the outer wall of the second elastic sealing ring 30 again, and then passes out through the second insertion hole 32. Both ends of the second strap are also clamped and locked by the clamping and positioning component 28.

[0078] In this embodiment, the second elastic sealing ring 30 is fitted onto the outside of the male penis. One hand holds the outer shell 4, and the other hand grasps both ends of the strap 27 and pulls it outward, so that the strap 27 squeezes the outer wall of the second elastic sealing ring 30. The outer wall of the second elastic sealing ring 30 clamps the outer wall of the male penis, thereby firmly fixing the shell 4 to the outside of the male penis. Finally, the two ends of the strap 27 are clamped and locked by the clamping and positioning component 28.

[0079] Example 5

[0080] As shown in Figure 6, the outer shell 4 and the pressure sealing device 2 are removed and replaced with a fixing ring 22. A soft sealing ring 23 is provided on the inner wall of the fixing ring 22. Semicircular positioning rings 21 are respectively snapped onto both sides of the fixing ring 22. The semicircular positioning rings 21 are connected to the wearable fixing strap 1 through the fixing ring 20. The inlet end of the urine collection bag 3 passes through the soft sealing ring 23, and after being turned over, it covers the outer wall of the fixing ring 22. The urine collection bag 3 is fixed by snapping onto the semicircular positioning rings 21. Then, the positioning hole on the inlet end of the urine collection bag 3 is fitted into the fixing ring 20.

[0081] In this embodiment, the patient's penis is inserted into the soft sealing ring 23. Because the soft sealing ring 23 is elastic, it can tightly wrap around the outside of the patient's penis, thus achieving a seal. The inner diameter of the fixing ring 22 can be configured in several different sizes according to the size of the man's penis.

[0082] Example 6

[0083] As shown in Figures 10 to 12, the outer shell 4 and the pressure sealing device 2 are removed and replaced with a third elastic sealing ring 34. A fourth annular groove 35 is provided on the outer wall of the third elastic sealing ring 34. The third elastic sealing ring 34 has mounting through holes 29 on both sides for connecting with the wearable fixing strap 1. The inlet end of the urine collection bag 3 is inserted into the third elastic sealing ring 34, and after being turned over, it covers the fourth annular groove 35 and is fixed by the urine bag fixing ring 11.

[0084] In this embodiment, the third elastic sealing ring 34 is placed on the patient's penis, so that the third elastic sealing ring 34 tightly wraps around the penis, thereby sealing the outer wall of the penis.

[0085] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of the invention and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of the invention should be included within the protection scope of the invention. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A backflow prevention urine collection device fixed by pressure, characterized in that, include: Wearable fixation strap (1) is worn on the patient's lower body; The outer shell (4) is detachably mounted on the wearable fixing strap (1); A pressure sealing device (2) is installed inside the outer casing (4); The urine collection bag (3) is inserted into the outer shell (4) at the inlet end, passes through the pressure sealing device (2), and is fixed to the outer wall of the outer shell (4) after being turned over; The patient's penis is placed inside the outer shell (4), and the outer wall of the penis is surrounded and wrapped by a pressure sealing device (2) to prevent urine from flowing back and leaking out.

2. The anti-backflow urine collection device fixed by pressure according to claim 1, characterized in that, After the inlet end of the urine collection bag (3) is fixed to the outer wall of the outer shell (4), a urine bag fixing ring (11) is fitted on the flange; the wearable fixing strap (1) is a T-shaped structure composed of a waist horizontal strap and a crotch vertical strap.

3. The anti-backflow urine collection device fixed by pressure according to claim 1, characterized in that, The pressure sealing device (2) includes: The first elastic sealing ring (7) is adapted to be installed inside the outer casing (4); The push ring (6) is adapted to be installed inside the housing (4) and located on one side of the first elastic sealing ring (7); The push tube (5) has one end set inside the outer shell (4) and is fixedly connected to the side wall of the push ring (6), and its outer wall is provided with threads; A rotating ring (9) is rotatably mounted on the outer wall of the housing (4) and threadedly connected to the outer wall of the push tube (5); The first annular groove (10) is set on the outer wall of the outer shell (4). The inlet end of the urine collection bag (3) is inserted into the first elastic sealing ring (7), and after being turned over, it covers the first annular groove (10) and is fixed by the urine bag fixing ring (11). The outer shell (4) has a first fixing plate (8) on both sides, and the first fixing plate (8) has several holes for connecting to the wearable fixing strap (1).

4. A backflow prevention urine collection device fixed by pressure according to claim 1, characterized in that, The pressure sealing device (2) includes: An airbag fixing groove (16) is set inside the outer shell (4); An annular airbag (15) is set in the airbag fixing groove (16), and its airbag filling port (14) passes through the outer shell (4) and is set on the outer wall of the outer shell (4); The air filling port seal (13) is adapted to be installed on the air filling port (14) of the airbag; The second annular groove (36) is set on the outer wall of the outer shell (4). The inlet end of the urine collection bag (3) is inserted into the annular air bladder (15), and after being turned over, it covers the second annular groove (36) and is fixed by the urine bag fixing ring (11).

5. A backflow prevention urine collector fixed by pressure according to claim 1, characterized in that, The pressure sealing device (2) includes: The second elastic sealing ring (24) is adapted to be installed inside the outer casing (4); The shrink band (19) wraps around the outer wall of the second elastic sealing ring (24). One end of the shrink band (19) is fixed to the inner wall of the outer shell (4), and the other end is set outside the outer shell (4) through the pull-out opening on the outer shell (4). Several positive locking teeth are evenly distributed on the outer wall of the shrink band (19). An elastic plate (17) is provided on the pull-out opening, and its inner side is provided with reverse teeth (18) that correspond to the forward teeth, which are used to lock and position the shrink band (19). The third annular groove (25) is set on the outer wall of the outer shell (4). The inlet end of the urine collection bag (3) is inserted into the second elastic sealing ring (24), which is then flipped over and covered on the third annular groove (25), and fixed by the urine bag fixing ring (11).

6. A backflow prevention urine collection device fixed by pressure according to claim 1, characterized in that, The pressure sealing device (2) includes: The second elastic sealing ring (30) is adapted to be installed inside the housing (4); The first socket (31), the second socket (32), the third socket (37), and the fourth socket (38) are respectively located on the side walls of the outer casing (4); At least one strap (27) is inserted into the outer shell (4) through the third socket (37), passes around the upper part of the outer wall of the second elastic sealing ring (30) and then passes out through the first socket (31), then enters the second socket (32), passes around the lower part of the outer wall of the second elastic sealing ring (30) again and then passes out through the fourth socket (38); Two second fixing plates (26) are respectively set on both sides of the outer shell (4), and several holes are provided on them for connecting to the wearable fixing strap (1); The clamping and positioning component (28) is located outside the housing (4) and clamps and locks the two ends of the strap (27) to prevent the strap (27) from retracting into the housing (4); The fifth annular groove (33) is set on the outer wall of the outer shell (4). The inlet end of the urine collection bag (3) is inserted into the second elastic sealing ring (30), which is then flipped over and covered on the fifth annular groove (33), and fixed by the urine bag fixing ring (11).

7. A backflow prevention urine collector fixed by pressure according to claim 6, characterized in that, The straps (27) are two in number. One end of the second strap is inserted into the outer shell (4) through the first insertion hole (31), passes around the upper part of the outer wall of the second elastic sealing ring (30), and then passes out through the third insertion hole (37), and then enters the fourth insertion hole (38). After passing around the lower part of the outer wall of the second elastic sealing ring (30) again, it passes out through the second insertion hole (32). Both ends of the second strap are also clamped and locked by the clamping and positioning component (28).

8. A backflow prevention urine collector fixed by pressure according to claim 1, characterized in that, Remove the outer shell (4) and the pressure sealing device (2) and replace them with a fixing ring (22). A soft sealing ring (23) is provided on the inner wall of the fixing ring (22). Semicircular positioning rings (21) are respectively attached to both sides of the fixing ring (22). The semicircular positioning rings (21) are connected to the wearable fixing strap (1) through the fixing ring (20). Among them, the inlet end of the urine collection bag (3) passes through the soft sealing ring (23), and after being turned over, it covers the outer wall of the fixing ring (22). The urine collection bag (3) is fixed by snapping the semi-circular positioning ring (21), and then the positioning hole on the inlet end of the urine collection bag (3) is put into the fixing ring (20).

9. A backflow prevention urine collector fixed by pressure according to claim 1, characterized in that, Remove the outer shell (4) and the pressure sealing device (2) and replace them with the third elastic sealing ring (34). The outer wall of the third elastic sealing ring (34) is provided with a fourth annular groove (35). The third elastic sealing ring (34) is provided with mounting through holes (29) on both sides for connecting with the wearable fixing strap (1). The inlet end of the urine collection bag (3) is inserted into the third elastic sealing ring (34), and after being turned over, it covers the fourth annular groove (35) and is fixed by the urine bag fixing ring (11).

10. A backflow prevention urine collector fixed by pressure according to any one of claims 1-9, characterized in that, The urine collection bag (3) includes: Bag body (302); The inlet of the urinary catheter (301) has a funnel-shaped or cylindrical straight opening at its inlet end, and its outlet end is connected to the inlet end of the bag body (302); The catheter interface (12) is located at the outlet end of the bag body (302).

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