A self-sealing protective cover for a peritoneal dialysis solution bag puncture port

Abstract

The utility model relates to peritoneal dialysis related technical field especially, a kind of peritoneal dialysis solution bag puncture port self-sealing protective cover, including protective bag, the one end of protective bag is provided with infusion mechanism, the inside surface of protective bag is wrapped with sealing layer. This one kind of peritoneal dialysis solution bag puncture port self-sealing protective cover, by setting locking mechanism, protective cover body can be conveniently fixed on dialysis solution bag, avoid because accidental touch or move and lead to protective cover to fall off, improve the stability and security of device. Meanwhile, the telescopic structure of pressing block and buckle, and the clamping structure of buckle and limiting slot constitute, so that operation is more simple and quick, just need to press gently to complete locking, greatly improve use efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of peritoneal dialysis, and in particular to a self-sealing protective cap for the puncture site of a peritoneal dialysis fluid bag. Background Technology

[0002] Peritoneal dialysis utilizes the principle of multicyclic equilibrium, involving the exchange of water and solutes between the dialysate infused into the peritoneal cavity and the blood within the peritoneal capillaries. Solute transport is primarily through diffusion, while water removal is mainly through ultrafiltration. Peritoneal dialysis involves repeated changes of the dialysate to remove metabolic waste products and correct electrolyte and acid-base imbalances, thereby maintaining a homeostatic internal environment. Peritoneal dialysis is a physiologically sound treatment. With continuous technological improvements and refinements, peritoneal dialysis has become an important method for treating acute and chronic renal failure. However, after peritoneal dialysis, the puncture site of the peritoneal dialysis bag often experiences decreased sealing performance due to frequent punctures. Therefore, a self-sealing protective cap for the peritoneal dialysis bag puncture site is particularly needed.

[0003] However, most existing peritoneal dialysis fluid bag puncture site self-sealing protective caps require manual sealing during use, which is cumbersome and the sealing effect is not good. Improper operation can easily lead to seal failure, affecting the normal operation of peritoneal dialysis. Utility Model Content

[0004] The purpose of this invention is to provide a self-sealing protective cap for the puncture site of a peritoneal dialysis bag, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a self-sealing protective cap for the puncture port of a peritoneal dialysis fluid bag, comprising a protective cap body, a locking mechanism provided on the outer side wall of the protective cap body, a dialysis fluid bag provided inside the protective cap body, and a sealing mechanism provided on the inner wall of the protective cap body;

[0006] The locking mechanism includes a fixing block, a pressing block, a buckle, a spring, and a limiting groove. The fixing block is installed on the outer wall of the protective cover body. The pressing block is provided inside the fixing block. A buckle is installed at one end of the pressing block. A spring is fixed at one end of the buckle. A limiting groove is provided on the outer wall of the dialysis bag.

[0007] Preferably, the sealing mechanism includes a fixing ring, a sealing ring, a limiting ring, a retaining ring, and an inner ring. The fixing ring is provided on the inner wall of the protective cover body, the sealing ring is installed on the inner wall of the fixing ring, the limiting ring is installed on the inner wall of the fixing ring, and the limiting ring, the sealing ring, and the fixing ring are sequentially fitted from the inside to the outside. The retaining ring is installed on the inner wall of the limiting ring, and the inner ring is installed on the inner wall of the retaining ring.

[0008] Preferably, the protective cover body has a puncture guide ring inside and a rubber seal on its inner wall.

[0009] Preferably, the buckle and the spring form a telescopic structure, and the buckle and the limiting groove form an engaging structure.

[0010] Preferably, the pressing block and the buckle form a telescopic structure, and the limiting groove is formed on the puncture hole thread groove of the dialysis bag.

[0011] Preferably, the inner wall size of the sealing ring matches the outer wall size of the limiting ring, and two sealing rings are provided, which are disposed on the outer walls of the limiting ring and the inner ring.

[0012] Preferably, the inner wall size of the limiting ring matches the outer wall size of the retaining ring, and the inner wall size of the retaining ring matches the outer wall size of the inner ring.

[0013] Compared with existing technologies, the advantages of this invention are as follows: This self-sealing protective cap for the peritoneal dialysis bag puncture site, through the setting of a locking mechanism, can easily fix the protective cap body onto the dialysis bag, preventing the protective cap from falling off due to accidental contact or movement, thus improving the stability and safety of the device. At the same time, the telescopic structure formed by the pressing block and the buckle, and the locking structure formed by the buckle and the limiting groove, make operation simpler and faster; locking can be completed with just a light press, greatly improving efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the protective cover body structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the locking mechanism of this utility model;

[0016] Figure 3 This is a schematic diagram of the overall appearance and structure of the present utility model;

[0017] Figure 4 for Figure 3 Enlarged view of a portion of point A in the middle;

[0018] Figure 5 for Figure 3 Enlarged view of a portion of point B in the middle;

[0019] Figure 6 This is a schematic diagram of the sealing mechanism of this utility model;

[0020] Figure 7 This is a schematic diagram of the structure of the sealing mechanism and the protective cover body of this utility model.

[0021] In the diagram: 1. Protective cap body; 2. Locking mechanism; 21. Fixing block; 22. Pressing block; 23. Buckle; 24. Spring; 25. Limiting groove; 3. Dialysis fluid bag; 4. Puncture guide ring; 5. Sealing mechanism; 6. Rubber seal; 51. Including fixing ring; 52. Sealing ring; 53. Limiting ring; 54. Snap ring; 55. Inner ring. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-7 This utility model provides a technical solution: a self-sealing protective cover for the puncture port of a peritoneal dialysis fluid bag, including a protective cover body 1, a locking mechanism 2 provided on the outer side wall of the protective cover body 1, a dialysis fluid bag 3 provided inside the protective cover body 1, and a sealing mechanism 5 provided on the inner wall of the protective cover body 1.

[0024] The locking mechanism 2 includes a fixing block 21, a pressing block 22, a latch 23, a spring 24, and a limiting groove 25. The fixing block 21 is installed on the outer wall of the protective cover body 1. The pressing block 22 is located inside the fixing block 21. A latch 23 is installed at one end of the pressing block 22, and a spring 24 is fixed at one end of the latch 23. A limiting groove 25 is formed on the outer wall of the dialysate bag 3. Specifically, the fixing block 21 is integrally formed on the protective cover body 1 (i.e., the fixing block 21 is part of the protective cover body 1 itself, and its thickness is the same as the thickness of the protective cover body 1). The fixing block 21 has a limiting groove 25. The pressing block 22 is slidably installed in the mounting groove connected to its upper end. The end of the spring 24 away from the buckle 23 abuts against the bottom wall of the mounting groove 25. The pressing block 23 includes a T-shaped part and an inverted L-shaped part integrally formed at its lower end. Under the elastic force of the spring 24, the upper end of the T-shaped part protrudes from the fixing block 21, and the inverted L-shaped part extends out of the fixing block 21 from the strip hole on the side of the mounting block 23 (i.e., the inverted L-shaped part extends into the inner wall of the protective cover body 1). The upper end of the inverted L-shaped part is towards the central axis of the protective cover body 1. The hook portion extends from the thread, and the end of the hook portion is an arc-shaped transition tip. The limiting groove 25 is opened at the thread on the outer wall of the puncture port of the dialysate bag 3, and the limiting groove 25 is inclined along the thread. The side wall of the limiting groove 25 is a flat surface, and the lower side wall of the limiting groove 25 corresponds to the bottom of the thread. When the protective cover body 1 is in the fully installed state, the hook portion of the pressing block 23 is fully engaged in the limiting groove 25 and is limited by the tops of the threads on both sides, so that the protective cover body 1 cannot rotate. When the pressing block 23 is pressed down, the lower side of the hook portion abuts against the large limiting groove 25. On the lower side wall, the hook part corresponds to the bottom of the tooth, thus losing the limit of the tooth crest. Therefore, when rotating the protective cover body 1, the hook part can disengage from the limiting groove 25 and continue to move along the tooth bottom in a threaded manner. Through the setting of the fixing block 21, pressing block 22, buckle 23, spring 24 and limiting groove 25, when it is necessary to unlock the protective cover, first press the symmetrical protruding pressing blocks 22 on both sides of the top of the cover with your thumb to release the internal buckle 23 lock. Then rotate the protective cover body 1 clockwise by 30° to disengage the buckle 23 from the thread of the liquid bag puncture port, so that the protective cover body 1 can be easily removed. When it is necessary to install the protective cover, align the protective cover body 1 with the thread of the liquid bag puncture port and rotate it counterclockwise by 30°. At this time, the buckle 23 is subjected to the elastic force of the spring 24 and is locked into the limiting groove 25. The operation is simple and quick, without the need for manual sealing, effectively avoiding the problem of sealing failure caused by improper operation.

[0025] Furthermore, the sealing mechanism 5 includes a fixing ring 51, a sealing ring 52, a limiting ring 53, a retaining ring 54, and an inner ring 55. A fixing ring 51 is provided on the inner wall of the protective cap body 1. A sealing ring 52 is installed on the inner wall of the fixing ring 51. A limiting ring 53 is installed on the inner wall of the fixing ring 51. A retaining ring 54 is installed on the inner wall of the limiting ring 53. An inner ring 55 is installed on the inner wall of the retaining ring 54. Through the arrangement of the fixing ring 51, sealing ring 52, limiting ring 53, retaining ring 54, and inner ring 55, during sealing, the sealing ring 52 on the fixing ring 51 first contacts the puncture site of the dialysate bag 3, forming the first layer of seal. As the protective cap body 1 rotates further, the limiting ring 53 and retaining ring 54 cooperate to tightly press the sealing ring 52 onto the puncture site, enhancing the sealing effect. Finally, the inner ring 55 serves as the last layer of protection, ensuring that the entire puncture site is completely sealed to prevent dialysate leakage. The multi-layer sealing design can also meet the sealing requirements under different pressure conditions, ensuring that even when subjected to external pressure during transportation or storage, it can maintain good sealing performance.

[0026] Furthermore, the protective cap body 1 is equipped with a puncture guide ring 4 inside and a rubber seal 6 on the inner wall of the protective cap body 1. The puncture guide ring 4 guides the puncture needle to puncture accurately, avoiding seal failure caused by puncture deviation. The rubber seal 6 allows the seal to be quickly restored after the puncture needle is withdrawn, preventing dialysate leakage.

[0027] Furthermore, the buckle 23 and the spring 24 form a telescopic structure, and the buckle 23 and the limiting groove 25 form a locking structure. With the buckle 23, the buckle 23 can automatically lock into the limiting groove 25 when inserted by the elastic force of the spring 24 during use, thereby fixing the protective cover body 1 and preventing it from accidentally falling off during use.

[0028] Furthermore, the pressing block 22 and the buckle 23 form a telescopic structure, and the limiting groove 25 is opened on the puncture hole thread groove of the dialysis bag 3. The pressing block 22 allows the user to easily unlock the buckle 23 by pressing it during use, so that the protective cover body 1 can be rotated and unlocked smoothly. The design of the limiting groove 25 ensures that the buckle 23 can accurately engage after being rotated into place, achieving stable locking.

[0029] Furthermore, the inner wall dimensions of the sealing ring 52 match the outer wall dimensions of the limiting ring 53. Two sealing rings 52 are provided, positioned on the outer walls of the limiting ring 53 and the inner ring 55. The use of sealing rings 52 further enhances the sealing effect, ensuring no leakage occurs under high-pressure conditions. Simultaneously, the design of two sealing rings 52 provides double protection; even if one sealing ring 52 is damaged, the other sealing ring 52 can still maintain its sealing performance, greatly improving the safety and reliability of the device.

[0030] Furthermore, the inner wall size of the limiting ring 53 matches the outer wall size of the retaining ring 54, and the inner wall size of the retaining ring 54 matches the outer wall size of the inner ring 55. By setting the limiting ring 53, it can be ensured that the retaining ring 54 can be stably fixed on the limiting ring 53 during installation, and displacement during rotation can be avoided.

[0031] Working principle: During use, the user first aligns the protective cap body 1 with the puncture site of the peritoneal dialysis bag. The puncture guide ring 4 inside the protective cap body 1 acts as a guide when the puncture needle is inserted, guiding the puncture needle to accurately puncture into the dialysis bag. At the same time, the rubber seal 6 will temporarily open, allowing the puncture needle to pass through. When the puncture needle is fully inserted into the dialysis bag, the rubber seal 6 deforms, increasing the squeezing force on the puncture needle, thereby preventing leakage and preventing dialysis fluid from leaking out. When the protective cap body 1 is rotated and installed on the dialysis bag, the buckle 23, under the elastic force of the spring 24, will automatically lock into the limiting groove 25 on the outer wall of the dialysis bag 3, completing the locking. At the same time, the sealing ring 52 on the fixing ring 51 will make tight contact with the puncture site of the dialysis bag, forming a... The first layer of sealing involves the limiting ring 53 and the retaining ring 54 working together to press the sealing ring 52 more tightly onto the puncture site, further enhancing the sealing effect. Finally, the inner ring 55 serves as the last layer of protection, ensuring that the entire puncture site is completely sealed to prevent dialysate leakage. After needle removal, the rubber seal 6 will return to a sealed state. When the protective cap needs to be removed, the user only needs to press the symmetrically protruding fixing blocks 21 on both sides of the top of the cap with their thumb to release the locking of the internal buckle 23. Then, rotate the protective cap body 1 clockwise to disengage the buckle 23 from the thread of the puncture site of the fluid bag, and the protective cap body 1 can be easily removed. The entire operation process is simple and quick, without the need for manual sealing, effectively avoiding the problem of sealing failure caused by improper operation.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-sealing protective cap for the puncture site of a peritoneal dialysis fluid bag, comprising a protective cap body (1), characterized in that: The outer wall of the protective cover body (1) is provided with a locking mechanism (2), the inside of the protective cover body (1) is provided with a dialysis fluid bag (3), and the inner wall of the protective cover body (1) is provided with a sealing mechanism (5). The locking mechanism (2) includes a fixing block (21), a pressing block (22), a buckle (23), a spring (24), and a limiting groove (25). The fixing block (21) is installed on the outer wall of the protective cover body (1). The pressing block (22) is provided inside the fixing block (21). A buckle (23) is installed at one end of the pressing block (22). A spring (24) is fixed at one end of the buckle (23). A limiting groove (25) is opened on the outer wall of the dialysis bag (3).

2. The self-sealing protective cap for the puncture site of a peritoneal dialysis fluid bag according to claim 1, characterized in that: The sealing mechanism (5) includes a fixing ring (51), a sealing ring (52), a limiting ring (53), a retaining ring (54), and an inner ring (55). The inner wall of the protective cover body (1) is provided with a fixing ring (51), the inner wall of the fixing ring (51) is provided with a sealing ring (52), the inner wall of the fixing ring (51) is provided with a limiting ring (53), and the limiting ring (53), the sealing ring (52), and the fixing ring (51) are sequentially connected from the inside to the outside. The inner wall of the limiting ring (53) is provided with a retaining ring (54), and the inner wall of the retaining ring (54) is provided with an inner ring (55).

3. The self-sealing protective cap for the puncture site of a peritoneal dialysis fluid bag according to claim 1, characterized in that: The protective cover body (1) is provided with a puncture guide ring (4) inside, and the inner wall of the protective cover body (1) is provided with a rubber seal (6).

4. The self-sealing protective cap for the puncture site of a peritoneal dialysis fluid bag according to claim 1, characterized in that: The buckle (23) and the spring (24) form a telescopic structure, and the buckle (23) and the limiting groove (25) form a locking structure.

5. The self-sealing protective cap for the puncture site of a peritoneal dialysis fluid bag according to claim 1, characterized in that: The pressing block (22) and the buckle (23) form a telescopic structure, and the limiting groove (25) is opened on the puncture hole thread groove of the dialysis bag (3).

6. The self-sealing protective cap for the puncture site of a peritoneal dialysis fluid bag according to claim 2, characterized in that: The inner wall size of the sealing ring (52) matches the outer wall size of the limiting ring (53). There are two sealing rings (52), which are disposed on the outer walls of the limiting ring (53) and the inner ring (55).

7. The self-sealing protective cap for the puncture site of a peritoneal dialysis fluid bag according to claim 2, characterized in that: The inner wall dimension of the limiting ring (53) matches the outer wall dimension of the retaining ring (54), and the inner wall dimension of the retaining ring (54) matches the outer wall dimension of the inner ring (55).

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