An integrally formed silicone tube inner-coil drainage catheter

Abstract

The utility model provides a kind of integrally formed silica gel tube inner wrapping wire drainage catheter, including silica gel tube, reinforcing thread, in the pipe wall of silica gel drainage catheter, reinforcing thread is wrapped into, silica gel tube extrusion, reinforcing thread is synchronously extruded with glue material in separately designed passage, and high temperature setting is carried out, it is integrally formed process, can guarantee the adhesion of silica gel tube and reinforcing thread;For the single cavity or multicavity drainage catheter needing to be punched, reinforcing thread in pipe wall adopts parallel arrangement mode, recess mark is made simultaneously on the outside of pipe wall, recess is parallel to reinforcing thread, for identifying the position of reinforcing thread, avoid recess when punching, avoid breaking reinforcing thread, to ensure that reinforcing thread is complete;For the single cavity or multicavity drainage catheter not needing to be punched, reinforcing thread in pipe wall adopts spiral arrangement, and the connection of silica gel tube is more closely, and tensile effect is stronger.The utility model can solve the problem that drainage catheter is easily broken in the process of catheter placement and extubation in prior art, and the small inner diameter of laminated structure drainage catheter leads to poor drainage effect.

Description

Technical Field

[0001] This utility model belongs to the field of medical devices, specifically relating to an integrally molded silicone tube with an inner suture for drainage. Background Technology

[0002] Drainage catheters are medical devices used in clinical surgery to drain pus, blood, and fluid accumulated between tissues or in body cavities to the outside of the body, preventing postoperative infection and promoting wound healing. Examples include central venous catheters, pancreatic drainage tubes, ureteral stents, and abdominal drainage tubes. When the drainage catheter is removed after drainage, it often breaks due to various reasons, leading to postoperative infection and requiring reoperation to remove it.

[0003] Existing drainage catheters are mostly layered structures, typically with reinforcing threads added between two layers of silicone rubber. This increases the wall thickness, and during stretching, there is relative displacement between the tubing and the threads. Furthermore, the increased wall thickness results in a drainage catheter with the same outer diameter having a smaller inner diameter than a standard drainage catheter, leading to poorer drainage and increased susceptibility to blockage. Therefore, there is an urgent need for a drainage catheter that is less prone to breakage while ensuring effective drainage. Summary of the Invention

[0004] This invention provides an integrally molded silicone tube with an inner suture for drainage, which solves the problems of easy breakage of drainage tubes during insertion and removal, and poor drainage effect caused by the small inner diameter of the stacked structure drainage tubes in the prior art.

[0005] To achieve the above objectives, the specific technical solution provided by this utility model is as follows: An integrally molded silicone tube with internal wire wrapping drainage conduit includes a silicone tube body and a reinforcing wire. A drainage cavity is provided inside the silicone tube body. The reinforcing wire is located inside the tube wall outside the drainage cavity. The drainage cavity can be single-cavity or multi-cavity. When the tube wall needs to be perforated, the reinforcing wire is parallel to the drainage cavity, and the tube wall is provided with a groove that completely corresponds to the position of the reinforcing wire.

[0006] The number of reinforcing lines inside the pipe wall is one or more, and more preferably multiple reinforcing lines are used, and the multiple reinforcing lines are arranged symmetrically on the cross-section of the pipe wall.

[0007] When the drainage catheter wall does not need to be perforated, multiple reinforcing lines are installed inside the tube wall. It is preferable to use two reinforcing lines in a spiral arrangement, so that the connection between the reinforcing lines and the silicone tube body is tighter and the tensile strength is stronger.

[0008] Regardless of the specific structure of the drainage conduit, all are manufactured using a one-piece molding process. One or more reinforcing channels are incorporated into the silicone extruder, ensuring the relative position of the reinforcing lines and the silicone tube before extrusion. This allows for direct high-temperature shaping after extrusion, guaranteeing product functionality. The one-piece molding process also ensures adhesion between the silicone tube and the reinforcing lines, enhancing the conduit's resistance to deformation and breakage.

[0009] Preferably, the groove on the pipe wall that corresponds perfectly to the position of the reinforcing line in the above technical solution can be used as a marker to indicate the position of the reinforcing line. However, when drilling, it is necessary to avoid the groove to prevent breaking the reinforcing line and thus ensure the integrity of the reinforcing line.

[0010] Furthermore, the reinforcing wire used in this application can withstand temperatures above 300°C, is soft, and does not affect the bending characteristics of the finished product. The reinforcing wire is made of nylon.

[0011] The above-mentioned technical solutions of this application are not limited to the above solutions, and are also applicable to other drainage catheter shapes, such as cross-shaped tubes and reinforced tubes. The products involved include, but are not limited to, central venous catheters, pancreatic drainage catheters, ureteral stents, abdominal drainage catheters, and lymphatic drainage catheters. It is only necessary to integrally form the reinforcing line into the tube wall according to the above-mentioned concept of this application.

[0012] Compared with the prior art, the present invention has achieved the following technical effects: (1) The integrated silicone tube with internal wire wrapping provided by this utility model is a one-piece molding process. By wrapping a reinforcing wire inside the silicone tube wall, the reinforcing wire is mixed with the rubber material and extruded synchronously when the silicone tube is extruded. This process can ensure the adhesion between the silicone tube and the reinforcing wire and prevent the drainage tube from breaking during insertion or removal.

[0013] (2) Compared with the drainage conduit with a layered structure of silicone tube and reinforcing line, this utility model adopts an integral molding process. On the one hand, it can avoid the relative displacement of silicone tube and reinforcing line when the drainage conduit is stretched. On the other hand, it avoids the problem that adding reinforcing line between two layers of silicone will reduce the inner diameter of the drainage conduit and thus affect the drainage effect.

[0014] (3) For single-lumen or multi-lumen drainage catheters that require drilling, the reinforcing lines inside the tube wall are arranged in parallel, and groove marks are made on the outside of the tube wall. When drilling, the grooves are avoided to ensure the integrity of the reinforcing lines.

[0015] (4) For drainage catheters that do not require drilling, the reinforcing lines inside the tube wall are arranged in a spiral pattern, making the connection between the reinforcing lines and the silicone tube tighter and the tensile strength stronger. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the single-lumen drainage catheter structure with perforation as shown in Example 1; Figure 2 This is a cross-sectional view of the single-lumen drainage catheter with perforation as described in Example 1; Figure 3 This is a schematic diagram of the perforated multi-lumen drainage catheter structure in Example 2; Figure 4 This is a cross-sectional view of the perforated multi-lumen drainage catheter body in Example 2; Figure 5 This is a side view of the single-lumen drainage catheter in Example 3; Figure 6 This is a cross-sectional view of the single-lumen drainage catheter in Example 3.

[0017] Wherein: 1 is a silicone tube, 1-1 is a drainage hole, 1-2 is a groove, 1-3 is a drainage cavity, 1-4 is the first drainage cavity, 1-5 is the second drainage cavity, and 2 is a reinforcing line. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] Example 1 like Figure 1 and 2 As shown, an integrally molded silicone tube with internally wrapped wire drainage conduit includes a silicone tube 1 and reinforcing wires 2. The drainage conduit has a single-lumen structure, namely a drainage cavity 1-3, and requires perforation. The reinforcing wires 2 are arranged parallel to each other inside the silicone tube 1. When the silicone tube 1 is extruded, the reinforcing wires 2 are mixed with the rubber material and extruded simultaneously. At the same time, grooves 1-2 parallel to the reinforcing wires 2 are provided on the outer side of the tube wall to mark the position of the reinforcing wires 2. When opening the drainage hole 1-1, the grooves 1-2 are avoided, thereby avoiding breaking the reinforcing wires 2 during perforation and ensuring the integrity of the reinforcing wires 2. The number of reinforcing wires 2 inside the tube wall is one or more. In this embodiment, there are four reinforcing wires 2, which are symmetrically distributed. The reinforcing wires 2 are made of nylon material.

[0020] Example 2

[0021] like Figure 3 and 4As shown, an integrally molded silicone tube with internally wrapped wire drainage conduit includes a silicone tube 1 and reinforcing wires 2. The drainage conduit has a two-lumen structure, including a first drainage cavity 1-4 and a second drainage cavity 1-5. A hole needs to be drilled on the outside of the second drainage cavity 1-5. The reinforcing wires 2 are arranged parallel to each other inside the silicone tube 1. When the silicone tube 1 is extruded, the reinforcing wires 2 are mixed with the rubber material and extruded simultaneously. At the same time, a groove 1-2 parallel to the reinforcing wires 2 is provided on the outside of the tube wall to mark the position of the reinforcing wires 2. When opening the drainage hole 1-1, the groove 1-2 is avoided, thereby avoiding breaking the reinforcing wires 2 during drilling and ensuring the integrity of the reinforcing wires 2. The number of reinforcing wires 2 inside the tube wall is one or more. In this embodiment, there are six reinforcing wires 2, which are symmetrically distributed. The reinforcing wires 2 are made of nylon material.

[0022] Example 3

[0023] like Figure 5 and 6 As shown, an integrally molded silicone tube with internally wrapped drainage conduit includes a silicone tube 1 and reinforcing wires 2. This drainage conduit has a single-lumen structure, i.e., drainage lumens 1-3, requiring no drilling. The reinforcing wires 2 inside the silicone tube 1 are arranged spirally. During extrusion of the silicone tube 1, the reinforcing wires 2 are mixed with the silicone material and extruded simultaneously, resulting in a tighter connection with the silicone tube 1 and stronger tensile strength. The number of reinforcing wires 2 inside the tube wall can be one or more; in this embodiment, there are two reinforcing wires 2, made of nylon.

[0024] While the specific embodiments of this utility model have been described in detail above, this utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model. Modifications or variations that do not involve creative labor are still within the protection scope of this utility model.

Claims

1. A one-piece molded silicone tube with an inner wire-wrapped drainage conduit, characterized in that, It includes an integrally molded silicone tube body and reinforcing lines. The silicone tube body is provided with a drainage cavity. The reinforcing lines are set in the tube wall outside the drainage cavity. The drainage cavity can be single-cavity or multi-cavity. When the tube wall needs to be perforated, the reinforcing lines are parallel to the drainage cavity. The tube wall is provided with grooves that completely correspond to the positions of the reinforcing lines. The number of reinforcing lines in the tube wall is one or more.

2. The integrally molded silicone tube with inner wire wrapping drainage conduit according to claim 1, characterized in that, The number of reinforcing lines inside the pipe wall is multiple, and the multiple reinforcing lines are arranged symmetrically on the cross-section of the pipe wall.

3. The integrally formed silicone tube-within-a-wire drainage catheter of claim 1, wherein, When the drainage catheter wall does not require drilling, multiple reinforcing lines are installed inside the tube wall in a spiral arrangement.

4. The integrally formed silicone tube-within-a-catheter wire drain catheter of claim 3, wherein, It employs two reinforcing lines arranged in a spiral.

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