Visualizable drainage catheter

Abstract

The utility model discloses a kind of visible drainage catheter, comprising: drainage tube seat;Drainage tube body, being set as being located the front end of the drainage tube seat;Developing strip, the developing strip is integrally disposed in the drainage tube body along the axial direction of the drainage tube body.The utility model can be visible drainage catheter, developing strip is integrally disposed in drainage tube body, especially the developing strip with length ratio reaching more than 90%, compared with prior art drainage catheter with only end portion can be developed, more specific circumstances of middle section in drainage tube body can be shown, it is helpful to judge whether drainage catheter is extruded by surrounding environment, whether drainage catheter needs to be adjusted placement mode.The utility model can be visible drainage catheter, entire drainage catheter can be more obviously, more completely displayed, with good developing effect, wide application range and the like advantages.

Description

Technical Field

[0001] This utility model relates to the field of drainage catheter technology, and in particular to a drainage catheter capable of being visualized. Background Technology

[0002] In surgical procedures, drainage catheters are typically placed in a specific location within the patient's body cavity during or after the operation. These catheters serve two purposes: firstly, they drain various fluids from the body cavity, preventing complications caused by fluid accumulation; secondly, postoperatively, doctors can observe the presence, type, color, consistency, and amount of drainage material within the catheter to infer information about the body cavity and take timely appropriate action. Early drainage catheters often failed to show their intracavitary portions on ultrasound, CT, or MRI scans; however, in recent years, visualized drainage catheters have become available.

[0003] CN106063967A discloses a drainage conduit with a radiopaque ring, which consists of a radiopaque ring and a drainage conduit assembly. The drainage conduit assembly is composed of front and rear parts. The front end of the drainage conduit assembly has a front end portion, and the rear end has a tail tip portion. Radiopaque rings are respectively provided at the front end of the drainage conduit assembly and at a distance of 50 to 100 mm from the tail tip portion. Each radiopaque ring is tightly bonded to the outer wall of the drainage conduit assembly. However, this drainage conduit can only be radiopaque in a localized area and cannot indicate the position of the entire drainage conduit, thus failing to adequately meet application requirements. Utility Model Content

[0004] In view of this, the present invention proposes a drainage catheter capable of visualization, which can solve the aforementioned existing technical problems. The present invention provides the following technical solution:

[0005] A radiopaque drainage catheter includes: a drainage tube seat; a drainage tube body positioned at the front end of the drainage tube seat; and a radiopaque strip integrally disposed within the drainage tube body along its axial direction.

[0006] Optionally, the length of the imaging strip is at least 90% of the length of the drainage tube, preferably at least 95%, and more preferably at least 99%.

[0007] Optionally, the number of developing strips is one or more, preferably the multiple developing strips are evenly distributed in the drainage tube body.

[0008] Optionally, the direction in which the developing strip is laid out is parallel to the axis of the drainage tube.

[0009] Optionally, the cross-sectional area of ​​a single imaging strip accounts for at least 5% of the cross-sectional area of ​​the drainage tube body, preferably at least 10%, more preferably at least 20%, and at most 30%.

[0010] Optionally, the drainage tube and the imaging strip are made of thermoplastic polyurethane elastomers with different properties.

[0011] Optionally, the drainage tube and the imaging strip are made of thermoplastic polyurethane elastomers of different densities.

[0012] Optionally, the drainage tube body and the imaging strip are prepared by polymer co-extrusion molding.

[0013] Optionally, the material of the drainage tube body is thermoplastic polyurethane elastomer, and the material of the imaging strip includes platinum, iridium, tantalum, or tungsten.

[0014] Optionally, the drainage tube and the imaging strip are prepared by injection molding.

[0015] The developing drainage tube of this invention features developing strips integrated throughout the drainage tube body, particularly strips that extend over 90% of its length. Compared to drainage tubes where only the ends are developable, this design provides greater visibility into the middle section of the drainage tube, aiding in determining whether the tube is being compressed by its surroundings and whether its placement needs adjustment. This developing drainage tube of the present invention provides a clearer and more complete view of the entire drainage tube, offering advantages such as superior developing effect and wide applicability. Attached Figure Description

[0016] For illustrative and not limiting purposes, the present invention will now be described with reference to preferred embodiments, and particularly with reference to the accompanying drawings, in which:

[0017] Figure 1 This is a three-dimensional schematic diagram of a radiopaque drainage catheter according to an embodiment of the present invention.

[0018] Figure 2 This is one of the cross-sectional schematic diagrams of the drainage tube body and the imaging strip in a imaging-capable drainage conduit according to an embodiment of the present invention;

[0019] Figure 3 This is a second schematic cross-sectional view of the drainage tube body and the imaging strip in a imaging-capable drainage conduit according to an embodiment of the present invention.

[0020] Figure 4 This is the third cross-sectional schematic diagram of the drainage tube body and the imaging strip in a imaging-capable drainage conduit according to an embodiment of the present invention;

[0021] Figure 5 This is the fourth cross-sectional schematic diagram of the drainage tube body and the imaging strip in a imaging drainage conduit according to an embodiment of the present invention.

[0022] In the picture:

[0023] 1. Drainage tube seat; 2. Drainage tube body; 3. Imaging strip. Detailed Implementation

[0024] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] In the description of this utility model, "front" refers to the end farther from the operator, and "rear" refers to the end closer to the operator. It should be noted that, unless otherwise explicitly specified and limited, terms such as "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] like Figure 1 As shown, the imaging-capable drainage catheter according to an embodiment of the present invention mainly includes: a drainage tube seat 1, a drainage tube body 2, and an imaging strip 3. The drainage tube body 2 is positioned at the front end of the drainage tube seat 1. The imaging strip 3 is integrally disposed within the drainage tube body 2 along its axial direction. The length of the imaging strip 3 is at least 90% of the length of the drainage tube body 2, preferably at least 95%, and more preferably at least 99%.

[0027] The developing drainage conduit according to this embodiment of the invention features developing strips integrally formed within the drainage tube body, particularly those extending over 90% of its length. Compared to drainage conduits where only the ends are developable, this invention provides greater visibility into the middle section of the drainage tube, aiding in determining whether the tube is being compressed by its surroundings and whether its placement needs adjustment. This developing drainage conduit offers advantages such as superior developing effect and wider applicability, providing a more clear and complete view of the entire drainage tube.

[0028] In the imaging-enabled drainage catheter according to the embodiments of the present invention, preferably but not limitedly, the drainage tube seat 1 and the drainage tube body 2 can be detachably connected. This design allows the same drainage tube seat 1 to be matched with drainage tube bodies 2 of different lengths or different models, or the drainage tube body 2 can be partially replaced rather than completely replaced if it is contaminated or worn. It has the advantages of good versatility, environmental protection and saving.

[0029] like Figure 1 As shown, the placement direction of the imaging strip 3 can be parallel to the axis of the drainage tube body 2, which can more realistically and completely reflect the location of the drainage tube. It should be noted that... Figure 1 In the illustrated embodiment, the developing strip 3 is located at a shallow position on the drainage tube body 2, and therefore can be shown in the figure. In other embodiments, the developing strip 3 may also be located at a deeper position on the drainage tube body 2, that is, the developing strip 3 is embedded in the drainage tube body 2.

[0030] The number of imaging strips 3 can be one or more. Setting multiple imaging strips 3 allows the drainage catheter to be visualized from multiple angles. Preferably, but not limited to, such as... Figure 2 As shown, multiple contrast strips 3 are uniformly distributed within the drainage tube body 2. In other embodiments, the multiple contrast strips 3 may also be non-uniformly distributed within the drainage tube body 2. When the multiple contrast strips 3 are uniformly distributed within the drainage tube body 2, the drainage catheter has good visibility from all angles under ultrasound. When the multiple contrast strips 3 are non-uniformly distributed within the drainage tube body 2, the ultrasound reflected echoes from the drainage catheter become locally concentrated, and a clear strong echo image can be seen when the contrast strips 3 are directly facing the ultrasound probe, providing a clear indication.

[0031] The cross-sectional shape of the developing strip 3 can be flexibly set, and can be presented as follows: Figure 2 and Figure 3 The sector shown can be as follows Figure 4 The circle shown can also be like... Figure 5 The shape shown is crescent-shaped, or polygonal, semi-circular, etc.

[0032] Preferably, but not limited to, the cross-sectional area of ​​a single developing strip 3 can account for at least 5% of the cross-sectional area of ​​the drainage tube body 2, preferably at least 10%, more preferably at least 20%, and at most 30%. This cross-sectional area ratio is preferred mainly because: if the cross-sectional area ratio of the developing strip is too large, the strength or toughness parameters of the drainage tube body may not meet the usage requirements, or it may lead to processing difficulties; if the cross-sectional area ratio of the developing strip is too small, the developing strip is too thin, and its developing signal is easily drowned out by noise signals.

[0033] The drainage tube body 2 and the contrast strip 3 can be made of thermoplastic polyurethane elastomers (TPU) with different properties. Thermoplastic polyurethane elastomers possess excellent toughness and elasticity, making them the preferred material for manufacturing various medical elastomer products. Thermoplastic polyurethane also exhibits good biocompatibility; blood compatibility can be improved by modifying the polyurethane elastomer and its surface, reducing the chance of thrombosis. Furthermore, thermoplastic polyurethane elastomers possess excellent coagulation properties, meet medical requirements in toxicity tests, and have no allergic reactions, making them widely applicable in the biomedical field. The drainage tube body 2 and the contrast strip 3 are prepared using a polymer co-extrusion molding method. Polymer co-extrusion refers to the simultaneous extrusion of different thermoplastic polymer materials through two extruder heads during the catheter molding process. This processing method results in a one-piece molding of the contrast strip and drainage tube body, preventing separation or detachment during use.

[0034] The drainage tube body 2 and the developing strip 3 are made of materials with different properties, specifically different densities. For example, the developing strip 3 has a higher density and is easier to develop. As an example, and not a limitation, the drainage tube body 2 can be made of ordinary TPU, and the developing strip 3 can be made of TPU mixed with tungsten powder.

[0035] Metal reflects ultrasound waves and appears as a high-density image under CT and MRI scans. Therefore, the drainage tube body 2 can be made of thermoplastic polyurethane elastomer, and the contrast strip 3 can be made of platinum, iridium, or tantalum, or a combination of these materials. The drainage tube body 2 and the contrast strip 3 can be manufactured using an injection molding embedding method.

[0036] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can occur depending on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A drainage catheter capable of being visualized, characterized in that, include: Drainage tube seat (1); The drainage tube body (2) is positioned at the front end of the drainage tube seat (1); The developing strip (3) is integrally disposed in the drainage tube body (2) along the axial direction of the drainage tube body (2); The cross-sectional shape of the developing strip (3) is fan-shaped or crescent-shaped, and the cross-sectional area of ​​a single developing strip (3) accounts for 5% to 30% of the cross-sectional area of ​​the drainage tube body (2).

2. The imaging-enabled drainage catheter according to claim 1, characterized in that, The length of the developing strip (3) is at least 90% of the length of the drainage tube (2).

3. The imaging-enabled drainage catheter according to claim 1, characterized in that, The length of the developing strip (3) is at least 95% of the length of the drainage tube (2).

4. The imaging-enabled drainage catheter according to claim 1, characterized in that, The length of the imaging strip (3) is at least 99% of the length of the drainage tube (2).

5. The imaging-enabled drainage catheter according to claim 1, characterized in that, The number of developing strips (3) is multiple, and the multiple developing strips (3) are evenly distributed in the drainage tube body (2).

6. The imaging-enabled drainage catheter according to claim 1, characterized in that, The direction of the development strip (3) is parallel to the axis of the drainage tube (2).

7. The imaging-capable drainage catheter according to any one of claims 1-4, characterized in that, The drainage tube (2) and the imaging strip (3) are made of thermoplastic polyurethane elastomers of different densities.

8. The imaging-enabled drainage catheter according to claim 7, characterized in that, The drainage tube (2) and the developing strip (3) are polymer co-extrusion molding structures.

9. The imaging-capable drainage catheter according to any one of claims 1 to 5, characterized in that, The material of the drainage tube (2) is thermoplastic polyurethane elastomer, and the material of the imaging strip (3) includes platinum, iridium or tantalum.

10. The imaging-enabled drainage catheter according to claim 9, characterized in that, The developing strip (3) is embedded in the drainage tube body (2).

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