Connecting equipment special for peritoneal dialysis catheter

Abstract

The invention provides special connecting equipment for a peritoneal dialysis catheter, which comprises a male connecting seat and a female connecting seat, the male connecting seat comprises a male connecting body, a male head is arranged on one side, facing the female connecting seat, of the male connecting body, an auxiliary section is arranged at the tail end of the male head, and an outer sealing assembly is arranged at the joint of the male head and the male connecting body; the female connecting seat comprises a female connecting body, and a matching structure matched with the male head is arranged on the inner wall of the female connecting body; and an inner sealing assembly is arranged between the auxiliary section of the male head and the matching structure. The outer wall of the male connector is provided with anti-slip lines or anti-slip protrusions. The outer wall of the female connector is provided with anti-slip lines or anti-slip protrusions. The length of the female connector in the axial direction is larger than that of the male connector in the axial direction. And the male head is in threaded connection with the matching structure. The sealing device is reasonable in structural design, the male connecting base and the female connecting base are screwed and fixed, so that an inner sealing structure and an outer sealing structure are formed between the male connecting base and the female connecting base, operation is easy, sealing reliability is high, and use cost is low.

Description

Technical Field

[0001] The invention belongs to the technical field of peritoneal dialysis, and in particular relates to a special connection device for peritoneal dialysis catheters. Background Art

[0002] Peritoneal dialysis utilizes the properties of the peritoneum as a semi-permeable membrane. The prepared dialysate is regularly and regularly infused into the patient's peritoneal cavity through a catheter under the action of gravity. Due to the difference in solute concentration gradient on both sides of the peritoneum, the solute on the high-concentration side moves to the low-concentration side; water moves from the hypotonic side to the hypertonic side. The peritoneal dialysis fluid is continuously replaced to achieve the purpose of removing metabolic products and toxic substances in the body and correcting water and electrolyte imbalances. When performing abdominal dialysis on a patient, an external dialysis catheter is required to be connected to the dialysis equipment. When in use, the external dialysis catheter is plugged into the patient's abdomen at one end and connected to the dialysis equipment at the other end, which can continuously introduce dialysate into the patient's body to complete the dialysis operation. Most of the existing peritoneal dialysis catheters are one-piece molding settings. The external pipe cannot be used due to damage caused by external force or wear. The existing segmented connection catheter is still prone to drug leakage during use because the sealing link at the connection position is not properly handled. Summary of the Invention

[0003] In view of this, the present invention aims to overcome the defects in the prior art and proposes a special connection device for peritoneal dialysis catheters, which can effectively connect the catheters and keep the catheters sealed reliably.

[0004] To achieve the above object, the technical solution created by the present invention is implemented as follows:

[0005] A special connection device for peritoneal dialysis catheters includes a male connector and a female connector. The male connector includes a male connector, a male head is provided on the side of the male connector facing the female connector, an auxiliary section is provided at the end of the male head, and an external sealing component is provided at the connection between the male head and the male connector; the female connector includes a female connector, and a matching structure matching the male head is provided on the inner wall of the female connector; an internal sealing component is provided between the auxiliary section of the male head and the matching structure.

[0006] Furthermore, the outer wall of the male connector is provided with anti-slip lines or anti-slip protrusions.

[0007] Furthermore, the outer wall of the female connector is provided with anti-slip lines or anti-slip protrusions.

[0008] Furthermore, the length of the female connector in the axial direction is greater than the length of the male connector in the axial direction.

[0009] Furthermore, the length of the male head along the axial direction is 1 / 3-2 / 3 of the total length of the male connecting seat along the axial direction.

[0010] Furthermore, the auxiliary section has a cone-shaped structure.

[0011] Furthermore, the length of the auxiliary section along the axial direction is 1 / 5-1 / 3 of the total length of the male connector along the axial direction.

[0012] Furthermore, the male head is threadedly connected to the matching structure.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] The invention has a reasonable structural design, and the male connecting seat and the female connecting seat are screwed and fixed, so that an inner and outer sealing structure is formed between the male connecting seat and the female connecting seat, which is simple to operate, has high sealing reliability and low use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 A schematic diagram of the structure created by the present invention;

[0017] Figure 2 A schematic diagram of the female connector portion of the present invention;

[0018] Figure 3 A schematic diagram of the male connector portion of the present invention;

[0019] Figure 4 A cross-sectional view of the female connector in the present invention;

[0020] Figure 5 A cross-sectional view of the male connector of the present invention;

[0021] Figure 6 A schematic diagram of the inner sealing assembly portion of the present invention;

[0022] Figure 7 A schematic diagram of the positioning ring portion of the present invention;

[0023] Figure 8 A schematic diagram of the outer and inner sealing components of the present invention;

[0024] Figure 9 Schematic diagram when creating an application for the present invention;

[0025] Figure 10 This is a schematic diagram of a male connector in an embodiment of the present invention;

[0026] Figure 11 This is a schematic diagram of a female connector in an embodiment of the present invention.

[0027] Description of reference numerals:

[0028] 1-male connector; 2-female connector; 3-male connector; 4-male head; 5-external sealing assembly; 6-female connector; 7-matching structure; 8-inner sealing assembly; 9-matching section; 10-conical section; 11-inner seal; 12-arc-shaped section; 13-outer seal; 14-positioning ring; 15-auxiliary section; 16-peritoneal dialysis catheter; 17-male connector connection part; 18-female connector connection part; 19-male connector guide section; 20-female connector guide section. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, features defined as "first", "second" and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0031] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art can understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0032] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0033] A special connection device for peritoneal dialysis catheters, such as Figures 1 to 8As shown, it includes a male connector 1 and a female connector 2. The male connector includes a male connector body 3, with a male head 4 provided on the side of the male connector body facing the female connector body, an auxiliary section 15 at the end of the male head, and an external sealing assembly 5 at the junction of the male head and the male connector body; the female connector includes a female connector body 6, with a mating structure 7 that matches the male head provided on the inner wall of the female connector; an internal sealing assembly 8 is provided between the auxiliary section of the male head and the mating structure. The auxiliary section has a conical structure. In an optional embodiment, the mating structure includes a mating section 9 that mates with the male head, and a conical section 10 that mates with the auxiliary section is provided at a section of the mating section away from the male connector body, and the internal sealing assembly is provided in the conical section.

[0034] In an optional embodiment, both the male connector and the female connector are detachably connected to the peritoneal dialysis catheter. Specifically, Figure 10 As shown, the inner wall of the end of the male connector away from the male head is provided with a male connector connecting portion 17, which adopts an internal thread structure. When the male connector needs to be connected to the peritoneal dialysis catheter, it is only necessary to align the male connector connecting portion of the male connector with the end of the peritoneal dialysis catheter, insert the tapered male connector guide section 19 of the peritoneal dialysis catheter into the male connector connecting portion, and as the male connector is screwed, the male connector connecting portion is screwed and fixed on the end of the peritoneal dialysis catheter, and as the male connector connecting portion and the peritoneal dialysis catheter are screwed and fixed, the male connector can be tapped on the peritoneal dialysis catheter without the need for additional auxiliary tools. The thread structure of the male connector connecting portion and the thread formed by the self-tapping of the male connector on the peritoneal dialysis catheter have a high degree of matching, thereby ensuring a reliable seal between the male connector and the peritoneal dialysis catheter.

[0035] like Figure 11 As shown, the inner wall of one end of the female connector away from the matching structure is provided with a female connector connecting portion 18, and the male connector connecting portion adopts an internal thread structure. When the female connector seat needs to be connected to the peritoneal dialysis catheter, it is only necessary to align the female connector connecting portion of the female connector seat with the end of the peritoneal dialysis catheter, insert the female connector guiding section 20 of the peritoneal dialysis catheter into the female connector connecting portion, and as the female connector seat is screwed, the female connector connecting portion is screwed and fixed on the end of the peritoneal dialysis catheter, and as the female connector connecting portion and the peritoneal dialysis catheter are screwed and fixed, the female connector seat can be threaded on the peritoneal dialysis catheter without the need for additional auxiliary tools. The thread structure of the female connector connecting portion and the thread formed by the female connector seat self-tapping on the peritoneal dialysis catheter have a high degree of matching, thereby ensuring a reliable seal between the female connector seat and the peritoneal dialysis catheter.

[0036] In an optional embodiment, two or more peritoneal dialysis catheters are connected for easy operation. Specifically, Figure 9As shown, during use, the connecting end of the male connector and the connecting end of the female connector are respectively welded to a peritoneal dialysis catheter 16. When the male connector and the female connector are screwed and fixed, the peritoneal dialysis catheters on both sides are connected, and the male and female connectors, which are assembled into one body, form a reliable seal. The auxiliary section of the tapered structure not only facilitates the insertion of the male connector into the female connector, but also facilitates the cooperation with the mating structure to achieve a seal.

[0037] In an optional embodiment, the inner seal assembly includes an inner sealing groove disposed on the inner wall of the tapered section, within which an inner seal 11 is disposed. The inner seal has an arcuate portion 12 on the side facing the mating section. When the male connector is inserted into the female connector, the male connector is screwed, securing the two connectors together. The auxiliary section gradually aligns with the tapered section, compressing the inner seal and creating a seal between the male connector and the mating structure.

[0038] The axial length of the female connector is greater than the axial length of the male connector. The axial length of the male connector is 1 / 3 to 2 / 3 of the total axial length of the male connector base. The axial length of the auxiliary section is 1 / 5 to 1 / 3 of the total axial length of the male connector.

[0039] The male head is threadedly connected to the mating structure. In order to facilitate screwing, the male connector and the female connector are docked and fixed. Preferably, the outer wall of the male connector is provided with anti-slip grooves or anti-slip protrusions. The outer wall of the female connector is provided with anti-slip grooves or anti-slip protrusions. In an optional embodiment, a positioning platform is formed at the junction of the male head and the male connector, and the external sealing assembly includes an external sealing groove provided on the positioning platform, and an external sealing member 13 is installed in the external sealing groove. When the male connector and the female connector are screwed and fixed, the end of the mating structure of the female connector rests against the external seal on the positioning platform, so that a seal is formed between the mating structure and the male connector.

[0040] In a further improved solution, a positioning ring 14 is provided at the end face of the mating structure end of the female connector. The positioning ring protrudes from the end face of the mating structure end of the female connector. When the male connector and the female connector are tightened and fixed, the positioning ring is in reliable contact with the outer seal to form a good seal.

[0041] The invention has a reasonable structural design. When used, the male connecting seat and the female connecting seat of two adjacent sections of the conduit are screwed and fixed, so that an inner and outer sealing structure is formed between the male connecting seat and the female connecting seat. The operation is simple, the sealing reliability is high, and the use cost is low.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A peritoneal dialysis catheter connection device, characterized in that: It includes a male connecting seat and a female connecting seat. The male connecting seat includes a male connecting body. A male head is provided on the side of the male connecting body facing the female connecting seat. An auxiliary section is provided at the end of the male head. An external sealing component is provided at the connection between the male head and the male connecting body; the female connecting seat includes a female connecting body. A matching structure matching the male head is provided on the inner wall of the female connector; an internal sealing component is provided between the auxiliary section of the male head and the matching structure.

2. The peritoneal dialysis catheter connection device according to claim 1, characterized in that: The outer wall of the male connector is provided with anti-skid lines or anti-skid protrusions.

3. The peritoneal dialysis catheter connection device according to claim 1, characterized in that: The outer wall of the female connector is provided with anti-skid lines or anti-skid protrusions.

4. The peritoneal dialysis catheter connection device according to claim 1, characterized in that: The length of the female connector in the axial direction is greater than the length of the male connector in the axial direction.

5. The peritoneal dialysis catheter connection device according to claim 1, characterized in that: The length of the male head in the axial direction is 1 / 3-2 / 3 of the total length of the male connecting seat in the axial direction.

6. The peritoneal dialysis catheter connection device according to claim 1, characterized in that: The auxiliary section has a cone-shaped structure.

7. The peritoneal dialysis catheter connection device according to claim 1, characterized in that: The length of the auxiliary section along the axial direction is 1 / 5-1 / 3 of the total length of the male connector along the axial direction.

8. The peritoneal dialysis catheter connection device according to any one of claims 1 to 7, characterized in that: The male head is threadedly connected to the matching structure.

Images