Peritoneal dialysis inner tube and peritoneal dialysis tube assembly

Abstract

The utility model discloses a peritoneal dialysis inner tube and peritoneal dialysis tube component, the peritoneal dialysis inner tube comprises an inner tube body and a cannula, the cannula and the inner tube body are both vertically arranged, the upper end of the cannula is provided with a bearing head, the outer wall of the middle part of the inner tube body is sleeved with an inserting ring matched with the bearing head, and the inserting ring is provided with an inserting hole matched with the bearing head. The lower end of the inner tube body penetrates through the sleeve from top to bottom and penetrates out of the sleeve, and the insertion ring is detachably connected with the bearing head in an inserted mode, so that the sleeve can firstly penetrate through an abdominal wound, the lower end of the sleeve is put into the abdominal cavity, the upper end of the sleeve is left outside the body, and at the moment, the inner tube body can penetrate into the abdominal cavity through the sleeve. The insertion ring on the inner tube body can be in butt joint with the bearing head at the upper end of the sleeve, when the inner tube body is blocked and needs to be replaced, butt joint of the insertion ring and the bearing head is directly removed, the inner tube body is pulled out of the sleeve, then the inner tube body is replaced with a new inner tube body, and any surgical operation is not needed.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and in particular relates to a peritoneal dialysis inner tube and a peritoneal dialysis tube assembly. Background Technology

[0002] Patients with uremia undergoing peritoneal dialysis require a peritoneal dialysis catheter assembly, which includes an inner peritoneal dialysis catheter and an outer short connector. One end of the inner peritoneal dialysis catheter is inserted into the abdominal cavity through an abdominal incision (a clamp is placed at the point where the inner peritoneal dialysis catheter passes through the abdominal incision, and the clamp heals with the incision to prevent displacement of the inner peritoneal dialysis catheter at the abdominal incision site). The other end of the inner peritoneal dialysis catheter is located outside the body and is connected to the outer short connector via a connector. The other end of the outer short connector is equipped with an iodine cap and a rotary switch. However, in actual application, the end of the inner peritoneal dialysis catheter located in the abdominal cavity is prone to blockage by fibrin and other components. In this case, a new inner peritoneal dialysis catheter needs to be replaced. However, the replacement of the inner peritoneal dialysis catheter is currently quite complicated, especially since the clamp on it has healed with the abdominal incision. In this case, repositioning the new inner peritoneal dialysis catheter may require a new surgical procedure, which increases the financial burden on the patient. Utility Model Content

[0003] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a peritoneal dialysis inner tube with a simple structure and a double-layer structure, especially one that allows for easy replacement of the inner tube body.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: a peritoneal dialysis inner tube, comprising an inner tube body and a sleeve, both the sleeve and the inner tube body being vertically arranged, the upper end of the sleeve being provided with a receiving joint, the outer wall of the middle part of the inner tube body being fitted with an insertion ring that cooperates with the receiving joint, the lower end of the inner tube body passing through from top to bottom and exiting the sleeve, and being detachably inserted into the receiving joint by the insertion ring.

[0005] The advantages of the above technical solution are as follows: the cannula can be passed through the abdominal incision first, and its lower end can be inserted into the abdominal cavity, while the upper end of the cannula remains outside the body. At this time, the inner tube body can be inserted into the abdominal cavity through the cannula, and the insertion ring on the inner tube body can be connected with the socket at the upper end of the cannula. When the inner tube body is blocked and needs to be replaced, the insertion ring and the socket can be disconnected directly, and the inner tube body can be pulled out of the cannula. Then, a new inner tube body can be replaced without any surgical operation.

[0006] In the above technical solution, both the inner tube body and the sleeve are silicone tubes.

[0007] The advantages of the above technical solution are that it has good durability and good flexibility.

[0008] In the above technical solution, the length from the lower end of the inner tube body to the insertion ring is greater than the length of the sleeve.

[0009] The beneficial effect of the above technical solution is that both ends of the inner tube body can be located outside the sleeve.

[0010] In the above technical solution, seepage holes are evenly distributed on the pipe wall at the lower end of the inner tube body.

[0011] The beneficial effect of the above technical solution is that the lower end of the inner tube body can also communicate with the abdominal cavity through the seepage hole.

[0012] The outer wall of the sleeve described in the above technical solution is provided with a clamp.

[0013] The beneficial effect of the above technical solution is that it allows the cannula to heal with the abdominal wound through the clasp, thereby preventing the cannula from shifting out of the abdominal wound.

[0014] The above technical solution provides multiple clamps, and the multiple clamps are distributed at intervals along the length direction at the upper end of the sleeve.

[0015] The beneficial effect of the above technical solution is that it allows the cannula to heal better with the abdominal wound.

[0016] In the above technical solution, the socket is groove-shaped with its groove facing upward. The upper end of the sleeve coaxially passes through the bottom of the socket. The insertion ring is annular and is coaxially sleeved on the inner tube body. When the insertion ring is inserted into the socket, the insertion ring is embedded in the socket.

[0017] The advantages of the above technical solution are: its structure is simple, which makes it easier for the insertion ring on the inner tube body to be inserted into the socket at the upper end of the sleeve, and it is not easy to loosen during insertion.

[0018] The second objective of this invention is to provide a peritoneal dialysis catheter assembly with a simple structure and convenient replacement of the inner tube body.

[0019] To achieve the above objectives, the technical solution of this utility model is as follows: a peritoneal dialysis catheter assembly, comprising an outer short tube and a peritoneal dialysis inner tube as described above, wherein one end of the outer short tube is connected to the upper end of the inner tube body via a connector.

[0020] The advantages of the above technical solution are that it has a simple structure, is easy to use, and can be easily replaced when the inner tube is blocked.

[0021] The connector described in the above technical solution is a spiral cap titanium connector.

[0022] The beneficial effect of the above technical solution is that it has good durability.

[0023] The other end of the external short tube in the above technical solution is provided with an iodine cap and a rotary switch in sequence.

[0024] The beneficial effect of the above technical solution is that when dialysis is not needed, the entire peritoneal dialysis catheter assembly can be closed by a rotary switch, and the iodine cap can maintain the aseptic requirements of the end of the external short tube. Attached Figure Description

[0025] Figure 1 This is a cross-sectional view of the inner tube body and the sleeve in the separated state as described in Embodiment 1 of this utility model;

[0026] Figure 2 This is a cross-sectional view of the inner tube body and the sleeve in the assembled state as described in Embodiment 1 of this utility model;

[0027] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0028] Figure 4 This is a side view of the inner tube body and the sleeve in the assembled state as described in Embodiment 1 of this utility model;

[0029] Figure 5 This is a side view of the peritoneal dialysis catheter assembly described in Embodiment 2 of this utility model;

[0030] Figure 6 This is a schematic diagram of the corrector described in Embodiment 2 of this utility model.

[0031] In the diagram: 1. Peritoneal dialysis inner tube; 11. Inner tube body; 111. Exudate hole; 12. Tube; 121. Knuckle; 13. Socket connector; 14. Insertion ring; 2. External short tube; 3. Connector; 4. Iodine cap; 5. Rotary switch; 6. Calibrator; 61. Traction cable; 62. Counterweight bead. Detailed Implementation

[0032] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will be more clearly described in light of the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0033] Example 1

[0034] like Figures 1-4As shown, this embodiment provides a peritoneal dialysis catheter, including an inner catheter body 11 and a cannula 12. Both the cannula 12 and the inner catheter body 11 are vertically arranged. The upper end of the cannula 12 is provided with a connector 13. The outer wall of the middle part of the inner catheter body 11 is fitted with an insertion ring 14 that cooperates with the connector 13. The lower end of the inner catheter body 11 passes through the cannula 12 from top to bottom and is detachably inserted into the connector 13 by the insertion ring 14. In this way, the cannula can be passed through the abdominal incision and its lower end can be lowered into the abdominal cavity, while the upper end of the cannula remains outside the body. At this time, the inner catheter body can be inserted into the abdominal cavity through the cannula. The insertion ring on the inner catheter body can be connected with the connector at the upper end of the cannula. When the inner catheter body is blocked and needs to be replaced, the insertion ring can be directly disconnected from the connector, the inner catheter body can be pulled out of the cannula, and then a new inner catheter body can be replaced without any surgical operation.

[0035] In the above technical solution, both the inner tube body 11 and the sleeve 12 are silicone tubes, which have good durability and flexibility.

[0036] In this embodiment, since both the inner tube body and the sleeve are soft tubes, it is somewhat difficult to insert the inner tube body into the sleeve. At this time, a small amount of sterile and harmless lubricant can be applied to the outer wall of the inner tube body in advance. This lubricant can be sterile glycerin (such as sterile glycerin suppositories).

[0037] In the above technical solution, the length from the lower end of the inner tube body 11 to the insertion ring 14 is greater than the length of the sleeve 12, so that both ends of the inner tube body can be located outside the sleeve; and the tube wall at the lower end of the inner tube body 11 is evenly distributed with seepage holes 111, so that the lower end of the inner tube body can also communicate with the abdominal cavity through the seepage holes.

[0038] In the above technical solution, a clamp 121 is provided on the outer wall of the cannula 12, so that the cannula can heal with the abdominal wound through the clamp, thereby preventing the cannula from shifting at the abdominal wound. Preferably, multiple clamps 121 are provided, and the multiple clamps 121 are distributed at intervals along the length of the upper end of the cannula 12, so that the cannula can heal better with the abdominal wound. Specifically, two clamps can be provided on the outside of the cannula.

[0039] In the above technical solution, the socket 13 is groove-shaped with its groove facing upward. The upper end of the sleeve 12 coaxially passes through the bottom of the socket 13. The insertion ring 14 is annular and is coaxially sleeved on the inner tube body 11. When the insertion ring 14 is inserted into the socket 13, the insertion ring 14 is embedded in the socket 13. Its structure is simple, which makes it easier for the insertion ring on the inner tube body to be inserted into the socket at the upper end of the sleeve, and it is not easy to loosen during insertion.

[0040] Compared with the prior art, the peritoneal dialysis inner tube in the prior art is equivalent to the inner tube body in this embodiment. In this embodiment, a sleeve 12 is added, and the clasp is transferred to the sleeve. At the same time, a socket joint 13 and a plug ring 14 are added.

[0041] Example 2

[0042] like Figure 5 As shown, this embodiment provides a peritoneal dialysis catheter assembly, including an outer short tube 2 and a peritoneal dialysis inner tube 1 as described above. One end of the outer short tube 2 is connected to the upper end of the inner tube body 11 through a connector 3. It has a simple structure and is easy to use, and can be easily replaced when the inner tube body is blocked.

[0043] In the above technical solution, the connector 3 is a spiral-cap titanium connector, which has excellent durability. The other end of the outer short connector 2 is sequentially equipped with an iodine cap 4 and a rotary switch 5. This allows the entire peritoneal dialysis catheter assembly to be closed by the rotary switch when dialysis is not needed, while the iodine cap maintains the aseptic requirements of the outer short connector end. The connector 3, iodine cap 4, and rotary switch 5 described in this embodiment are all prior art and will not be elaborated upon here.

[0044] like Figure 6 As shown, in this embodiment, for the peritoneal dialysis catheter assembly, the end of the peritoneal dialysis inner tube located in the abdominal cavity is prone to displacement (especially when it moves upward to the point of being detached from the fluid surface, which can easily lead to poor drainage of peritoneal fluid). In this case, a corrector 6 can be inserted into the abdominal cavity through the inner tube body. The corrector includes a traction cable 61, and one end of the traction cable is strung with multiple counterweight beads 62. The end with the counterweight beads is inserted into the abdominal cavity through the inner tube body, and the end of the inner tube body located in the abdominal cavity will move down to its original position (i.e., fall into the pelvic cavity) under the action of the weight of the counterweight beads. At this time, the corrector can be pulled out. The traction cable can be a plastic wire, and the counterweight beads can be stainless steel beads or ceramic beads. The diameter of the counterweight beads must be smaller than the inner diameter of the inner tube body, and the length of the traction cable must be greater than the length of the inner tube body.

[0045] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A peritoneal dialysis tubing, characterized in that, It includes an inner tube body (11) and a sleeve (12). Both the sleeve (12) and the inner tube body (11) are arranged vertically. The upper end of the sleeve (12) is provided with a connector (13). The outer wall of the middle part of the inner tube body (11) is fitted with a plug ring (14) that cooperates with the connector (13). The lower end of the inner tube body (11) passes through from top to bottom and out of the sleeve (12), and is detachably plugged into the connector (13) by the plug ring (14).

2. The peritoneal dialysis tubing according to claim 1, characterized in that, Both the inner tube body (11) and the sleeve (12) are silicone tubes.

3. The peritoneal dialysis tubing according to claim 1, characterized in that, The length from the lower end of the inner tube body (11) to the insertion ring (14) is greater than the length of the sleeve (12).

4. The peritoneal dialysis tubing according to claim 1, characterized in that, The inner tube body (11) has perforations (111) evenly distributed on the tube wall at the lower end.

5. The peritoneal dialysis tubing according to claim 1, characterized in that, A clasp (121) is provided on the outer wall of the sleeve (12).

6. The peritoneal dialysis tubing according to claim 5, characterized in that, Multiple clasps (121) are provided, and the multiple clasps (121) are distributed at intervals along the length direction at the upper end of the sleeve (12).

7. The peritoneal dialysis tubing according to claim 1, characterized in that, The socket (13) is groove-shaped with its groove facing upward. The upper end of the sleeve (12) coaxially passes through the bottom of the socket (13). The insertion ring (14) is annular and is coaxially sleeved on the inner tube body (11). When the insertion ring (14) is inserted into the socket (13), the insertion ring (14) is embedded in the socket (13).

8. A peritoneal dialysis catheter assembly, characterized in that, It includes an external short tube (2) and a peritoneal dialysis inner tube (1) as described in any one of claims 1-7, wherein one end of the external short tube (2) is connected to the upper end of the inner tube body (11) via a connector (3).

9. The peritoneal dialysis catheter assembly according to claim 8, characterized in that, The connector (3) is a spiral cap titanium connector.

10. The peritoneal dialysis catheter assembly according to claim 9, characterized in that, The other end of the external short tube (2) is provided with an iodine cap (4) and a rotary switch (5) in sequence.

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