Medical catheter and endoscope equipment

Abstract

The utility model discloses a medical catheter and endoscope equipment, and relates to the technical field of medical instruments. The hose body is provided with at least two channels; and the supporting pipe is arranged in the channel, and the length of the supporting pipe is smaller than that of the hose body. On the premise that the manufacturing cost is not increased, the situation that the butt joint face of the medical catheter leaks water along with the increase of the pressure of a liquid injection source is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a medical catheter and endoscope equipment. Background Art

[0002] An endoscope is a medical device used to observe and examine cavities, organs or tissues inside the human body. It consists of a slender tubular structure and an optical system that can be inserted into the body through natural cavities or small incisions such as the mouth, esophagus, trachea, gastrointestinal tract, etc., to provide real-time internal images and videos.

[0003] An endoscope usually includes a light source system and a catheter, wherein the existing medical catheter with a bendable front end is composed of an insertion part and a bending part, wherein the bending part is made of a relatively soft tube or a snake bone, and the insertion part is made of a relatively hard tube, and finally one end of the bending part is connected to the other end of the insertion part to form a medical catheter. If the bending part is docked with a relatively soft tube, water will easily break through the docking surface and enter other cavities during the injection process as time increases or the pressure of the injection source increases, causing leakage. If the bending part is docked with a snake bone, the manufacturing cost is high and the structure is complicated.

[0004] Therefore, how to avoid water leakage at the docking surface of the medical catheter due to the increase of injection source pressure without increasing the manufacturing cost has become a technical problem that needs to be solved urgently. Utility Model Content

[0005] The main purpose of the utility model is to provide a medical catheter and endoscope equipment, aiming to avoid the situation that the medical catheter leaks at the docking surface due to the increase of injection source pressure without increasing the manufacturing cost.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a medical catheter, comprising:

[0007] a hose body having at least two passages; and

[0008] The support tube is arranged in the channel, and the length of the support tube is smaller than the length of the hose body, so that a hardness difference is formed between the part of the hose body that contacts with the support tube and the part that does not contact with the support tube.

[0009] In one embodiment of the present application, the support tube is a metal tube or a tension spring.

[0010] In one embodiment of the present application, the outer side of the hose body is also covered with a braided layer.

[0011] In one embodiment of the present application, the outer diameter of the support tube is less than or equal to 1.3 times the inner diameter of the channel.

[0012] In one embodiment of the present application, the hose body is made of thermoplastic polyetheramide copolymer or thermoplastic polyurethane.

[0013] In one embodiment of the present application, the number of the channels is eight, and any one of the channels is provided with a traction wire that can drive the portion of the hose body that is not in contact with the support tube to bend; wherein the channel where the traction wire is located is independent of the channel on the hose body used for transmission. In one embodiment of the present application, the rigidity of the braided layer is less than the rigidity of the support tube.

[0014] The present application also discloses an endoscope device, comprising the medical catheter as described in any one of the above items.

[0015] With the above technical solution, the presence of the support tube increases the rigidity and stability of the hose body, enabling it to resist external pressure and deformation and maintain the required shape and direction of the hose body. The hose body has at least two channels, which can simultaneously transmit different fluids, gases or substances, thereby improving the versatility and applicability of the pipeline system. The length of the support tube is shorter than the length of the hose body to ensure that the remaining part of the hose body can maintain flexibility and bendability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0017] Figure 1 A top view of the first embodiment of the utility model;

[0018] Figure 2 This is a front view of the first embodiment of the utility model;

[0019] 10. Hose body; 11. Channel; 20. Support tube; 30. Braided layer; 40. Traction wire. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the following specific embodiments are only used to explain the utility model and do not constitute a limitation on the utility model.

[0021] like Figure 1 to Figure 2 As shown, in order to achieve the above-mentioned purpose, the utility model provides a medical catheter, comprising:

[0022] The hose body 10 is provided with at least two channels 11; and

[0023] The support tube 20 is disposed in the channel 11 . The length of the support tube 20 is smaller than the length of the hose body 10 , so that a hardness difference is formed between the portion of the hose body 10 that contacts the support tube 20 and the portion that does not contact the support tube 20 .

[0024] Specifically, the hose body 10 is a flexible tubular structure, usually made of a flexible material such as thermoplastic polyurethane (TPU). It has at least two channels 11. The diameter and shape of each channel 11 can be designed according to the requirements of a specific application. The inner wall surface of the hose body 10 is usually smooth so that fluid or gas can pass smoothly.

[0025] The support tube 20 is a rigid tubular structure, and common materials include metal (such as stainless steel) or plastic (such as polyurethane). The support tube 20 is placed in the channel 11 of the hose body 10, so that a hardness difference is formed between the part of the hose body 10 that contacts the support tube 20 and the part that does not contact it.

[0026] The support tube 20 is fixedly connected to the hose body 10 by bonding, heat pressing or mechanical connection. Alignment of one end means that one end of the support tube 20 is parallel to one end of the hose body 10 and is placed at the starting position of the hose body 10. The length of the support tube 20 is shorter than the length of the hose body 10 to ensure that the remaining part of the hose body 10 can maintain flexibility and bendability.

[0027] With the above technical solution, the presence of the support tube 20 increases the rigidity and stability of the hose body 10, enabling it to resist external pressure and deformation and maintain the desired shape and direction of the hose body 10. The hose body 10 has at least two channels 11, which can work independently to transmit fluids, gases or substances, thereby improving the versatility and applicability of the pipeline system. The length of the support tube 20 is less than the length of the hose body 10 to ensure that the remaining part of the hose body 10 can maintain flexibility and bendability.

[0028] In one embodiment of the present application, the support tube 20 is a metal tube or a tension spring.

[0029] With the above technical solution, the metal tube and the tension spring have high strength and rigidity, and can provide stronger supporting force. They can resist greater pressure and external forces, so that the hose body 10 maintains a stable shape and is not easy to deform or collapse.

[0030] In one embodiment of the present application, the outer side of the hose body 10 is further covered with a braided layer 30 .

[0031] By adopting the above technical solution, the braided layer 30 increases the strength and wear resistance of the hose body 10. The braided layer 30 can resist external scratches, friction and physical damage, and protect the hose body 10 from damage in the environment. The braided layer 30 enhances the structural stability of the hose, making it more resistant to stretching and twisting. This enables the hose to withstand greater tension and torque without being easily deformed or broken. The braided layer 30 can increase the pressure resistance of the hose.

[0032] In one embodiment of the present application, the outer diameter of the support tube 20 is less than or equal to 1.3 times the inner diameter of the channel 11 .

[0033] By adopting the above technical solution, the outer diameter of the support tube 20 is less than or equal to 1.3 times the inner diameter of the passage 11 of the hose body 10;

[0034] When the outer diameter of the support tube 20 is smaller than or equal to the inner diameter of the channel 11 of the hose body 10 , the support tube 20 can be directly inserted and made to fit in the channel by bonding or heat shrinking.

[0035] When the outer diameter of the support tube 20 is larger than the inner diameter of the channel 11 of the hose body 10 and less than 1.3 times, the channel of the hose body 10 can be cut along the outer wall and parallel to the channel axis, and then the support tube 20 can be inserted, and the support tube can be attached to the channel by bonding or heat shrinking. This allows the support tube 20 to be tightly matched with the hose body 10. Such a design can ensure that there is no gap or looseness between the support tube 20 and the hose body 10, thereby increasing the stability and sealing of the system.

[0036] In one embodiment of the present application, the hose body 10 is made of thermoplastic polyetheramide copolymer or thermoplastic polyurethane.

[0037] By adopting the above technical solution, thermoplastic polyetheramide copolymer and thermoplastic polyurethane have good tolerance, including acid, alkali, solvent, etc. They can resist chemical corrosion and dissolution, and maintain the integrity and performance of the hose. At the same time, they have good elasticity and bending properties, and can restore their original shape after being stressed, so that the hose has good flexibility and plasticity. This enables the hose to adapt to different installation and use conditions, and is easy to bend and arrange.

[0038] In one embodiment of the present application, the number of the channels 11 is eight, and any one of the channels 11 is provided with a traction wire 40 that can drive the portion of the hose body 10 that is not in contact with the support tube 20 to bend; wherein the channel where the traction wire 40 is located is independent of the channel for transmission on the hose body 10. The channel for transmission in the present application refers to a channel for delivering instruments, gas, liquid, optical signal, electrical signal, etc. to a target object.

[0039] By adopting the above technical solution, by setting the traction wire 40 in the channel 11 in the hose body 10, the bending part in the hose body 10 can be accurately controlled. The channel 11 where the traction wire 40 is located is independent of the channel 11 used for transmission on the hose body 10. It can avoid that the traction wire 40 interferes with the channel 11 used for transmission.

[0040] In an embodiment of the present application, the rigidity of the braided layer 30 is smaller than the rigidity of the support tube 20 .

[0041] With the above technical solution, the flexibility of the braided layer 30 helps to reduce stress concentration and fatigue damage of the hose under cyclic load. When the hose is frequently bent or subjected to vibration and impact during use, the lower rigidity braided layer 30 can reduce stress concentration and improve the durability and life of the hose.

[0042] The present application also discloses an endoscope device, comprising the medical catheter as described in any one of the above items.

[0043] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A medical catheter, characterized in that: include: A hose body (10) is provided with at least two channels (11); and A support tube (20) is arranged in the channel (11), and the length of the support tube (20) is shorter than the length of the hose body (10), so that a hardness difference is formed between the part of the hose body (10) that contacts the support tube (20) and the part that does not contact the support tube (20).

2. The medical catheter according to claim 1, characterized in that The support tube (20) is a metal tube or a tension spring.

3. The medical catheter according to claim 1, wherein: The outer side of the hose body (10) is also covered with a braided layer (30).

4. The medical catheter according to claim 1, wherein: The outer diameter of the support tube (20) is less than or equal to 1.3 times the inner diameter of the channel (11).

5. The medical catheter according to claim 1, wherein: The hose body (10) is made of thermoplastic polyether amide copolymer or thermoplastic polyurethane.

6. The medical catheter according to claim 1, wherein: The number of the channels (11) is eight, and any one of the channels (11) is provided with a traction wire (40) capable of driving the portion of the hose body (10) that is not in contact with the support tube (20) to bend; wherein the channel where the traction wire (40) is located is independent of the channel on the hose body (10) used for transmission.

7. The medical catheter according to claim 3, characterized in that The rigidity of the braided layer (30) is smaller than the rigidity of the support tube (20).

8. An endoscope device, characterized in that: Comprising the medical catheter as claimed in any one of claims 1 to 7.

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