Peritoneal dialysis catheter protection kit

Abstract

The invention discloses a peritoneal dialysis catheter protection kit. The peritoneal dialysis catheter protection kit comprises a protection sleeve and a fixing clamp, wherein the protection sleeve is used for protecting a peritoneal dialysis catheter in the suture process of peritoneal dialysis catheterization, and the fixing clamp is connected with the protection sleeve. The inner diameter of the protective sleeve is slightly larger than the outer diameter of the peritoneal dialysis catheter and the outer diameter of the polyester sleeve, so that the catheter is protected, and meanwhile it is guaranteed that the catheter can move in the protective sleeve. The fixing clamp is composed of a pair of arc-shaped extension rods, the ends of the fixing clamp are provided with anti-skid design, the default state is that the dialysis catheter is clamped, and the fixing clamp and the protective sleeve are integrally formed. The protective kit is made of the puncture-resistant medical high polymer material, has proper rigidity and flexibility, and can effectively prevent the suture needle from puncturing, so that the effect of protecting the peritoneal dialysis catheter is achieved, and the catheter is prevented from being punctured by mistake or scratched when the rectus abdominis anterior sheath or abdominal wall tissue is sutured. The peritoneal dialysis catheter is simple in structure and convenient to use, the damage risk of the catheter can be remarkably reduced, the safety and success rate of peritoneal dialysis catheterization are improved, and meanwhile postoperative abdominal wall leakage, infection and other complications are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a peritoneal dialysis catheter protection kit used in peritoneal dialysis catheterization, especially a peritoneal dialysis catheter protection kit used to prevent peritoneal dialysis catheters from being pricked by suture needles during the process of suturing the anterior sheath of rectus abdominis. BACKGROUND

[0002] The prevalence of chronic kidney disease in Chinese adults is about 10.8%, of which about 20% to 30% of patients will progress to end-stage renal disease (ESRD) and need kidney replacement therapy. Peritoneal dialysis, as an important replacement therapy, has been widely used in patients with end-stage renal disease. According to the latest statistics, there are about 160,000 peritoneal dialysis patients in China at present.

[0003] During peritoneal dialysis treatment, the placement of peritoneal dialysis catheter is one of the key steps. Peritoneal dialysis catheterization is usually performed by placing the catheter smoothly into the abdominal cavity through an incision and fixing it. During the operation, the anterior sheath of rectus abdominis needs to be sutured to fix the dacron sleeve in the muscle layer of the anterior sheath of rectus abdominis, so as to fix the peritoneal dialysis catheter and promote wound healing. However, during the suturing process, the suture needle may accidentally prick the peritoneal dialysis catheter, causing damage to the catheter, and further causing catheter leakage, fluid accumulation at the surgical site, infection at the surgical site, and even hernia at the surgical site. These complications not only increase the patient's pain, but also may require replacement of the peritoneal dialysis catheter, increase the economic burden, and may cause postoperative trauma to worsen, and even cause medical disputes. Especially for inexperienced doctors, the risk of pricking the catheter is more prominent.

[0004] Therefore, considering the large amount of peritoneal dialysis catheterization surgery and the risk of pricking the catheter, it is urgent to develop a peritoneal dialysis catheter protection kit to avoid accidental damage to the catheter during the operation, reduce the incidence of complications, improve the success rate of the operation, and reduce economic losses and medical risks. SUMMARY

[0005] The purpose of the present application is to solve the problem that in the existing peritoneal dialysis catheterization, the suture needle may accidentally prick the peritoneal dialysis catheter when suturing the anterior sheath of rectus abdominis or the abdominal wall tissue. In the existing operation, since the catheter is exposed near the suture area and lacks effective protection devices, the catheter is easily pricked and scratched by the needle tip, causing complications such as catheter leakage, fluid accumulation at the surgical site, infection, hernia, and impaired catheter function, and even requiring re-catheterization surgery.

[0006] Therefore, the technical problem of the present application is to provide a catheter protection kit that can effectively protect the peritoneal dialysis catheter from being pricked by the suture needle during the suturing process, in order to reduce the incidence of complications and improve the safety of catheterization. At the same time, the protection kit needs to be simple in structure and easy to operate.

[0007] Technical Solution: To achieve the above objectives, this invention provides a peritoneal dialysis catheter protection kit, comprising a catheter protection sleeve and a fixing clip integrated with the sleeve. The fixing clip consists of two arc-shaped extension rods, left and right, possessing a certain degree of elasticity and memory. Its default state is clamping the peritoneal dialysis catheter. The two extension rods can be pushed apart by pressing with fingers, allowing the protection sleeve to move up and down. Releasing the pressure returns the fixing clip to its initial state, clamping the peritoneal dialysis catheter again. The end area of ​​the fixing clip is designed with raised anti-slip stripes to increase the friction when the kit clamps the peritoneal dialysis catheter. The inner diameter of the catheter protection sleeve is slightly larger than the outer diameter of the peritoneal dialysis catheter and the inner and outer polyester sleeves, ensuring both protection of the peritoneal dialysis catheter and the kit's mobility. The catheter protection kit is made of medical-grade high-polymer puncture-resistant material and has a wall thickness sufficient to prevent suture needles from penetrating the protective cavity.

[0008] Preferably, in the peritoneal dialysis catheter protection kit provided by the present invention, the protective sleeve and the fixing clip are integrally formed.

[0009] Preferably, in the peritoneal dialysis catheter protection kit provided by the present invention, the length of the protective sleeve is 3 to 4.5 cm, and the length of the fixing clip is 2 to 3 cm.

[0010] Preferably, in the peritoneal dialysis catheter protection kit provided by the present invention, the initial state of the extension rod in the fixing clamp is bent towards the center of the sleeve. It can be loosened by pressing the two extension rods simultaneously with one hand to make them shift outward and thus release the clamp on the peritoneal dialysis catheter.

[0011] Preferably, in the peritoneal dialysis catheter protection kit provided by the present invention, the raised anti-slip stripes provided at the end area of ​​the fixing clip are arc stripes that protrude toward the dialysis catheter side, with a width of 2 to 3 mm and located in the middle position, and the number of stripes is 3 to 5.

[0012] Preferably, in the peritoneal dialysis catheter protection kit provided by the present invention, the inner diameter of the protective sleeve is larger than both the outer diameter of the commonly used peritoneal dialysis catheter and the outer diameter of the inner and outer polyester sleeves, and the gap between the inner diameter of the protective sleeve and the outer diameter of the polyester sleeve is 1 to 6 mm.

[0013] Preferably, in the peritoneal dialysis catheter protection kit provided by the present invention, the thickness of the protective sleeve is 1-2 mm.

[0014] Preferably, in the peritoneal dialysis catheter protection kit provided by the present invention, the material used for the protection kit is medical-grade thermoplastic elastomer (TPE) or thermoplastic polyurethane (TPU).

[0015] Beneficial effects: Compared with the prior art, the present invention has the following advantages: (1) The anti-puncture structure of the kit can prevent the suture needle tip from contacting or puncturing the catheter, thus avoiding catheter damage from the root cause; (2) The introduction of the kit can avoid complications such as leakage after catheter puncture, surgical site infection, postoperative effusion, and abdominal wall hernia, thereby improving the success rate of surgery; (3) The protective effect of the kit can reduce medical disputes and repeated catheter placement surgery caused by catheter damage, thereby reducing medical costs; (4) The use of the kit can reduce the risk of accidental puncture by novices during the suturing process, thereby improving the safety and stability of operation; (5) The protective kit has a simple structure and is easy to operate. It can be quickly fixed outside the catheter, is easy to install and remove, does not affect the suturing field of vision, and does not require additional complicated operations. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the peritoneal dialysis catheter protection kit of the present invention clamping the catheter.

[0017] Figure 2 This is a three-dimensional schematic diagram of the fixation clip in the peritoneal dialysis catheter protection kit of the present invention when it is opened.

[0018] Figure 3 for Figure 2 A schematic diagram of the cross-section of region A in the middle.

[0019] Figure 4 This is a schematic diagram of the peritoneal dialysis catheter protection kit fixing clip at different angles according to the present invention.

[0020] Figure labels: peritoneal dialysis catheter 1, inner polyester sheath 11, outer polyester sheath 12, catheter protective sleeve 2, fixing clip 3, anti-slip stripe 31. Detailed Implementation

[0021] The technical solutions in the embodiments of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] In the description of this invention, it should be understood that the terms "left", "right", "inner", "outer", "end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Example 1

[0023] See appendix Figure 1 to Figure 4This embodiment provides a peritoneal dialysis catheter protection kit, which is used to protect the peritoneal dialysis catheter 1 from being punctured by the suture needle when suturing the anterior rectus abdominis sheath during peritoneal dialysis catheter placement.

[0024] The protective kit mainly consists of a conduit protective sleeve 2 and a fixing clip 3 integrally formed with the sleeve.

[0025] The catheter protective sleeve 2 is a hollow cylindrical structure made of medical-grade thermoplastic polyurethane (TPU), possessing excellent puncture resistance, flexibility, and biocompatibility. The length L1 of the catheter protective sleeve 2 is 3.5 cm, the wall thickness T is 1 mm, and the length L2 of the fixing clip is 2.5 cm. This thickness is sufficient to effectively prevent the insertion of surgical suture needles, forming a safe protective cavity. The inner diameter D1 of the catheter protective sleeve 2 is 9 mm, slightly larger than the outer diameter of commonly used peritoneal dialysis catheter 1 (outer diameter approximately 5 mm) and the inner and outer polyester sleeves (outer diameter approximately 7 mm), allowing the sleeve to be fitted over the catheter while maintaining a certain degree of mobility when the fixing clip 3 is not locked (e.g., ...). Figure 3 (As shown), this allows doctors to adjust its protective position.

[0026] The fixing clip 3 and the conduit protective sleeve 2 are integrally injection molded, ensuring the integrity and structural strength of the kit. The fixing clip 3 consists of two arc-shaped extension rods that extend naturally outward from the end of the conduit protective sleeve 2. In its natural state (i.e., without external force), as... Figure 1 As shown, the two extension rods bend towards the central axis, generating an inward clamping preload, which can clamp the peritoneal dialysis catheter 1 placed between them by default.

[0027] The extension rod of the fixing clip 3 has excellent elasticity and memory. For example... Figure 2 As shown, when the doctor presses the outer sides of both extension rods simultaneously with their thumb and forefinger, the extension rods elastically shift outwards, thus releasing the clamp on the peritoneal dialysis catheter 1. At this point, the doctor can easily move the entire protective kit up and down on the catheter to precisely cover the catheter segment requiring suturing. After releasing the fingers, due to material memory, the fixing clip 3 quickly returns to its original position. Figure 1 The initial clamping state is shown; the catheter is then firmly re-clamped.

[0028] In particular, combined Figure 4At the end region of the clamp 3 (i.e., the area where it contacts and holds the catheter with the doctor's fingers), raised anti-slip stripes 31 are designed. In this embodiment, the anti-slip stripes 31 are arc-shaped stripes protruding towards the peritoneal dialysis catheter 1, and there are three of them. These anti-slip stripes 31 can significantly increase the static friction between the clamp 3 and the catheter surface, preventing the kit from sliding due to accidental contact during the operation, thus ensuring the reliability of the protection.

[0029] Working principle and usage process: During peritoneal dialysis catheter placement, when peritoneal dialysis catheter 1 is in place and anterior rectus abdominis sheath suturing is required, the doctor holds this protective kit and opens it by pressing the extension rod of the fixation clip 3 (as shown in the image). Figure 2 As shown), place the catheter protective sleeve 2 onto the catheter at the location corresponding to the suture position. Then loosen the extension rod, and the fixing clip 3 will securely hold the catheter (as shown). Figure 1 (As shown). The doctor can then perform the suturing procedure. At this point, even if the suture needle accidentally punctures the catheter, it will only puncture or press against the hard outer wall of the catheter protective sleeve 2, and will not be able to reach the internal peritoneal dialysis catheter 1, thus fundamentally avoiding the risk of catheter puncture. After suturing is completed, the entire kit can be easily removed by pressing the fixation clip 3 again. Example 2

[0030] Based on Example 1, this example optimizes the size and materials of the protective kit.

[0031] In this embodiment, the length L1 of the catheter protective sleeve 2 is 3 cm, which is more suitable for situations where the surgical incision is small and more precise local protection is required. The length L2 of the fixing clip 3 is 2 cm, providing sufficient leverage arm to make single-handed opening and closing operations more effortless.

[0032] The protective kit is made of medical-grade thermoplastic elastomer (TPE). TPE material also has excellent puncture resistance and biocompatibility, and is softer to the touch, providing better clamping cushioning and further reducing potential abrasion to the catheter surface.

[0033] The inner diameter D1 of the catheter protective sleeve 2 has a 2 mm gap with the outer diameter of the catheter, and a 1 mm gap with the outer diameter of the polyester sleeve, providing a tighter fit while ensuring mobility. The wall thickness T of the catheter protective sleeve 2 is 1.5 mm, providing stronger puncture resistance and making it suitable for scenarios with higher protection requirements. Example 3

[0034] This embodiment provides a protection kit with an alternative size configuration.

[0035] In this embodiment, the catheter protective sleeve 2 has a length L1 of 4.5 cm, which can cover longer catheter segments and provide a wider protection area for suturing operations, making it particularly suitable for novice doctors to increase the margin of error. The fixing clip 3 has a length L2 of 3 cm, which allows for a larger operating range.

[0036] The fixing clip 3 has five anti-slip stripes 31 at its end region to provide maximum clamping stability. The catheter protective sleeve 2 has a wall thickness T of 1 mm, which ensures sufficient protection while making the overall kit lighter and minimizing the impact on surgical procedures.

[0037] In summary, the peritoneal dialysis catheter protection kit provided by this invention effectively solves the technical problem of catheter puncture during suturing through the ingenious combination of a puncture-resistant sleeve and an elastic fixing clip. This kit has a simple structure, is intuitive to operate, and is easy to assemble and disassemble, significantly reducing surgical complications and medical risks.

Claims

1. A peritoneal dialysis catheter protection kit, characterized in that, The kit includes a catheter protection sleeve (2) and a clamping clip (3) integrated with the sleeve. The clamping clip (3) consists of two arc-shaped extension rods, left and right. The clamping clip (3) has a certain degree of elasticity and memory. The default state is to clamp the peritoneal dialysis catheter (1). The two extension rods can be pushed apart by pressing with fingers to move the protective sleeve up and down. After releasing, the clamping clip (3) will return to the initial state and clamp the peritoneal dialysis catheter again. The end area of ​​the clamping clip (3) is designed with raised anti-slip stripes (31) to increase the friction when the kit clamps the peritoneal dialysis catheter. The inner diameter of the catheter protection sleeve (2) is slightly larger than the outer diameter of the peritoneal dialysis catheter (1) and the inner (11) and outer polyester sleeve (12), thus ensuring that the kit protects the peritoneal dialysis catheter while also ensuring the mobility of the kit. The catheter protection kit is made of medical-grade high-molecular puncture-resistant material and has a wall thickness sufficient to prevent suture needles from piercing the protective cavity.

2. The protection kit according to claim 1, characterized in that: The protective sleeve (2) and the fixing clamp (3) are integrally formed.

3. The protection kit according to claim 1, characterized in that: The length of the protective sleeve (2) is 3 to 4.5 cm, and the length of the fixing clip (3) is 2 to 3 cm.

4. The protection kit according to claim 1, characterized in that: The initial state of the extension rod in the fixing clamp (3) is bent towards the center of the sleeve. It can be operated with one hand to press the two extension rods at the same time to make them shift outward and thus loosen the clamp on the peritoneal dialysis catheter.

5. The protection kit according to claim 1, characterized in that: The raised anti-slip stripes (31) provided at the end area of ​​the fixing clip (3) are arc stripes that protrude towards the dialysis catheter side, with a width of 2-3 mm and located in the middle position, and the number of stripes is 3-5.

6. The protection kit according to claim 1, characterized in that: The inner diameter of the protective sleeve (2) is larger than both the outer diameter of the commonly used peritoneal dialysis catheter and the outer diameter of the inner (11) and outer polyester sleeve (12). The gap between the inner diameter of the protective sleeve (2) and the outer diameter of the inner (11) and outer polyester sleeve (12) is 1 to 6 mm.

7. The protection kit according to claim 1, characterized in that: The thickness of the protective sleeve (2) is 1 to 2 mm.

8. The protection kit according to claim 1, characterized in that: The protective kit is made of medical-grade thermoplastic elastomer (TPE) or thermoplastic polyurethane (TPU).

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