Intestinal obstruction catheter

Abstract

The utility model relates to the technical field of medical instruments, in particular to an intestinal obstruction catheter which at least comprises an operation portion, a main catheter body, a guide head and a balloon, and a first groove extending in the length direction of the guide head is formed in the peripheral face of the guide head. A second groove extending in the length direction of the main guide pipe is formed in the peripheral face of the main guide pipe. The device further comprises a visual lens and a lens communication line, the visual lens is fixedly arranged in the first groove and located at the free end of the guide head or at the position close to the free end, the lens communication line is embedded in the first groove and the second groove, one end of the lens communication line is connected with the visual lens, and the other end of the lens communication line is connected with the guide head. And the other end extends to the outer side of the operating part and is provided with a connecting part. According to the structure, the grooves are formed in the peripheral surfaces of the guide head and the main guide pipe, the overall size of the guide head and the main guide pipe is slightly increased, the production difficulty of the guide head and the main guide pipe is reduced, the diameter of an internal hole of an original structure cannot be reduced, the production efficiency is higher, and the production cost is lower.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to an intestinal obstruction catheter. Background Technology

[0002] Intestinal obstruction is a common surgical emergency of the abdomen. It is frequently caused by various mechanical factors affecting the intestines, including those within the intestines, the intestinal wall, and outside the intestines, and is characterized by difficult diagnosis, complex etiologies, diverse complications, and rapid disease progression. Currently, the catheters used clinically for treating intestinal obstruction are typically placed using either endoscopy-assisted placement or DSA (digital subtraction angiography)-assisted placement. However, these methods still have drawbacks, including the inability to promptly observe the intestinal condition, difficulty in placement, and poor patient comfort.

[0003] Based on this, Chinese utility model patent CN222324087U discloses a visual intestinal obstruction catheter, which has a visual lens fixedly connected inside the guide tube. The visual lens is connected to a plug via an optical fiber and then to a decoder, thereby enabling direct observation of the situation in front of the guide tube. This allows for rapid insertion of the guide tube into the obstructed area, reducing catheter placement time and improving treatment efficiency. However, the aforementioned visual intestinal obstruction catheter still has the following technical defects:

[0004] (1) The view lens is located inside the guide, which requires opening a lens cavity and a guide wire cavity inside the guide, which will inevitably increase the radial dimension of the guide.

[0005] The guide tip (pre-guide) of the intestinal obstruction catheter, as the component guiding the main tube's advance, needs to be designed with a bullet-shaped structure to facilitate passage through narrow sections and points of intestinal motility closure. A guidewire is also required for guidance during entry into the intestine, and all guide tips have a guidewire channel (guidewire lumen) in the middle of their tip. The guidewire diameter is typically around 1.3mm, and the guidewire channel on the guide tip is usually designed to be around 1.6mm. Currently, the diameter of smaller lens modules on the market is approximately 1.2mm. If the wall thickness of the lens and guidewire channel, as well as the wall thickness surrounding the lens, are included, the minimum width of the guide tip needs to reach 6mm.

[0006] However, the current mainstream guide head has a front diameter of 4-4.5mm. By placing the visual lens inside the guide head, the size of the guide head is increased significantly, greatly increasing the difficulty of passage through the intestines.

[0007] (2) The viewing lens is located inside the front guide, which imposes greater constraints on the size and dimensions of the viewing lens and limits the range of options available.

[0008] (3) Both the lead tube and the main tube are made of silicone, which has a large frictional resistance. If the visual lens and fiber optic cable are installed by internal opening, the hole is small and the length is large (the length of the main tube can reach about 3 meters), resulting in low installation efficiency and high production cost. Summary of the Invention

[0009] The technical problem this invention aims to solve is that in existing technologies, the viewing lens of a visual intestinal obstruction catheter is located inside the pre-guide tube, resulting in a large radial dimension of the pre-guide tube. This also leads to a limited range of selectable viewing lenses, low production efficiency, and high production costs.

[0010] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an intestinal obstruction catheter, comprising at least an operating part, a main tube connected to the operating part, a guide head connected to the end of the main tube away from the operating part, and a balloon disposed on the main tube near the guide head. A first groove extending along the length of the guide head is provided on the outer peripheral surface of the guide head, and a second groove extending along the length of the main tube is provided on the outer peripheral surface of the main tube. It also includes a viewing lens and a lens communication line. The viewing lens is fixedly disposed in the first groove at or near the free end of the guide head. The lens communication line is embedded in the first and second grooves. One end of the lens communication line is connected to the viewing lens, and the other end extends to the outside of the operating part and is provided with a connecting part.

[0011] In a preferred embodiment, the viewing lens is fixed in the first groove of the guide head by adhesive.

[0012] In a preferred embodiment, the lens communication cable is fixed in the first groove and the second groove by adhesive.

[0013] In a preferred embodiment, the opening width of the first groove is smaller than the diameter of the first groove, and the depth of the first groove is greater than the radius of the first groove.

[0014] In a preferred embodiment, the opening width of the second groove is smaller than the diameter of the second groove, and the depth of the second groove is greater than the radius of the second groove.

[0015] In a preferred embodiment, the balloon includes a first balloon near the guide head and a second balloon spaced apart from the first balloon.

[0016] In a preferred embodiment, the main tube is provided with a guidewire cavity, an injection channel, a first balloon channel communicating with a first balloon, a second balloon channel communicating with a second balloon, and a radiopaque line extending along the length of the main tube.

[0017] In a preferred embodiment, the guide head is provided with a guide wire hole communicating with the guide wire cavity.

[0018] In a preferred embodiment, a side hole communicating with the guidewire cavity is provided on the main guide tube between the guide head and the first balloon and between the first balloon and the second balloon.

[0019] In a preferred embodiment, the operating part is provided with a guidewire inlet communicating with the guidewire cavity, an injection port communicating with the injection channel, a first balloon valve communicating with the first balloon channel, and a second balloon valve communicating with the second balloon channel.

[0020] The intestinal obstruction catheter of this embodiment has the following advantages compared with the prior art:

[0021] (1) A first groove is provided on the outer peripheral surface of the guide head, and the visual lens is fixedly placed in the first groove. In this way, the visual lens is fixedly placed on the side of the guide head, and only the size of the position of the visual lens is increased, rather than the overall radial size of the guide head. Compared with the traditional guide head, the increase in size is very small. While achieving visualization at the guide head, the passage of the guide head in the intestine is almost unaffected.

[0022] (2) Since the first groove for accommodating the viewing lens is set on the outer peripheral surface of the guide head, there are fewer restrictions on the size and shape of the viewing lens, and the range of viewing lenses is wider.

[0023] (3) Grooving is made on the outside of the guide head and the main tube, which reduces the production difficulty of the guide head and the main tube, and does not reduce the diameter of the internal hole of the original structure.

[0024] (4) The first groove for accommodating the viewing lens is set on the outer peripheral surface of the guide head, making it more convenient to assemble the viewing lens, increasing production efficiency and reducing production costs.

[0025] (5) The second groove for accommodating the lens communication line is set on the outer peripheral surface of the main tube. The efficiency of accommodating the lens by first embedding it into the second groove is far greater than that of inserting it inside the main tube. It is also less difficult, more efficient, and less costly.

[0026] (6) The second groove for accommodating the lens communication line is set on the outer peripheral surface of the main tube, which has little impact on the overall radial dimension of the main tube. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the intestinal obstruction catheter shown in this embodiment;

[0028] Figure 2 This is a schematic diagram of the end face of the guide head in the first embodiment of the intestinal obstruction catheter shown in this example;

[0029] Figure 3This is a schematic diagram of the end face of the guide head in the second embodiment of the intestinal obstruction catheter shown in this example;

[0030] Figure 4 This is a schematic cross-sectional view of the main catheter in the first embodiment of the intestinal obstruction catheter shown in this example;

[0031] Figure 5 This is a schematic cross-sectional view of the main catheter in the second embodiment of the intestinal obstruction catheter shown in this example. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0033] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an integral connection, or a detachable connection; they can refer to the internal connection of two components; they can refer to a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0035] Example 1,

[0036] like Figure 1 As shown, an intestinal obstruction catheter of this embodiment includes an operating part 3, a main tube 2, and a guide head 1. One end of the main tube 2 is connected to the operating part 3, and the other end is connected to the guide head 1. A first balloon 4 and a second balloon 5 spaced apart from the first balloon 4 are disposed on the main tube 2 near the guide head 1.

[0037] like Figure 4 As shown, the main tube 2 is internally provided with a guidewire cavity 21, an injection channel 24, a first balloon channel 25 communicating with the first balloon 4, a second balloon channel 26 communicating with the second balloon 5, and a radiopaque line 23 extending along the length of the main tube. Correspondingly, as... Figure 1As shown, the operation unit 3 is provided with a guidewire inlet 31 communicating with the guidewire cavity 21, an injection port 32 communicating with the injection channel 24, a first balloon valve 33 communicating with the first balloon channel 25, and a second balloon valve 34 communicating with the second balloon channel 26.

[0038] like Figure 1 As shown, a side hole 22 communicating with the guide wire cavity is provided on the main tube 2 between the guide head 1 and the first balloon 4 and between the first balloon 4 and the second balloon 5.

[0039] It should be noted that the structure of the above-mentioned intestinal obstruction catheter is a mature existing technology, and its specific structure will not be described in detail in this embodiment.

[0040] As a special feature of this embodiment, such as Figure 2 , Figure 4 As shown, in this embodiment of the intestinal obstruction catheter, a viewing lens 6 is provided at or near the free end of the guide head 1. One end of the viewing lens 6 is connected to a lens communication line 7, and the other end of the lens communication line 7 extends to the outside of the operation part 3. A connecting part 71 is provided at the end of the lens communication line 7 away from the viewing lens. The connecting part 71 can be a plug-like structure for connecting to a video decoding and / or display device, so as to observe the image in front of the viewing lens in real time through the viewing lens, thereby guiding the doctor to operate the guide head to move forward in the intestine.

[0041] As a special feature of this embodiment, a first groove 12 extending along the length of the guide head 1 is provided on the outer peripheral surface of the guide head 1, and a second groove 27 extending along the length of the main guide tube 2 is provided on the outer peripheral surface of the main guide tube 2. The viewing lens 6 is fixedly disposed in the first groove 12, and the lens communication cable 7 is embedded in the first groove 12 and the second groove 27.

[0042] Preferably, in this embodiment, the viewing lens 6 is fixed in the first groove 12 of the guide head 1 by the fixing adhesive 8, and the lens communication cable 7 is fixed in the first groove 12 and the second groove 27 by the fixing adhesive 8.

[0043] As a preferred embodiment of this example, Figure 3 As shown, the opening width of the first groove 12 is smaller than the diameter of the first groove 12, and the depth of the first groove 12 is greater than the radius of the first groove 12. The advantage of this design is that when installing a viewing lens, placing the viewing lens in the first groove 12 can pre-position the lens, followed by the gluing operation, thereby improving the efficiency of the viewing lens installation.

[0044] As a preferred embodiment of this example, Figure 5As shown, the opening width of the second groove 27 is smaller than the diameter of the second groove 27, and the depth of the second groove 27 is greater than the radius of the second groove 27. The advantage of this design is that when installing the lens communication cable, placing the cable in the second groove provides pre-positioning for the cable, followed by adhesive bonding, thereby improving the efficiency of lens communication cable installation.

[0045] In summary, the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An intestinal obstruction catheter, comprising at least an operating portion, a main tube connected to the operating portion, a guide head connected to the end of the main tube away from the operating portion, and a balloon disposed on the main tube near the guide head, characterized in that, The guide head has a first groove extending along its length on its outer circumferential surface, and the main guide tube has a second groove extending along its length on its outer circumferential surface. The guide head also includes a viewing lens and a lens communication line. The viewing lens is fixedly disposed in the first groove at or near the free end of the guide head. The lens communication line is embedded in the first and second grooves. One end of the lens communication line is connected to the viewing lens, and the other end extends to the outside of the operating part and has a connecting portion.

2. The intestinal obstruction catheter according to claim 1, characterized in that, The viewing lens is fixed in the first groove of the guide head by adhesive.

3. The intestinal obstruction catheter according to claim 1, characterized in that, The lens communication cable is fixed in the first groove and the second groove with adhesive.

4. The intestinal obstruction catheter according to claim 2 or 3, characterized in that, The opening width of the first groove is smaller than the diameter of the first groove, and the depth of the first groove is greater than the radius of the first groove.

5. The intestinal obstruction catheter according to claim 4, characterized in that, The opening width of the second groove is smaller than the diameter of the second groove, and the depth of the second groove is greater than the radius of the second groove.

6. The intestinal obstruction catheter according to any one of claims 1-5, characterized in that, The balloon includes a first balloon near the guide head and a second balloon spaced apart from the first balloon.

7. The intestinal obstruction catheter according to claim 6, characterized in that, The main tube is internally provided with a guidewire cavity, an injection channel, a first balloon channel communicating with the first balloon, a second balloon channel communicating with the second balloon, and a radiopaque line extending along the length of the main tube.

8. The intestinal obstruction catheter according to claim 7, characterized in that, The guide head is provided with a guide wire hole that communicates with the guide wire cavity.

9. The intestinal obstruction catheter according to claim 7, characterized in that, The main guide tube between the guide head and the first balloon, and between the first balloon and the second balloon, is provided with side holes that communicate with the guide wire cavity.

10. The intestinal obstruction catheter according to any one of claims 7-9, characterized in that, The operating unit is provided with a guidewire inlet communicating with the guidewire cavity, an injection port communicating with the injection channel, a first balloon valve communicating with the first balloon channel, and a second balloon valve communicating with the second balloon channel.

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