Connector-protected microwave ablation composite cable

Abstract

The utility model relates to the technical field of microwave ablation composite cable, especially a microwave ablation composite cable with connector protection, which comprises a cable body and a connector, one end of the cable body is electrically connected with the connector, the other end of the cable body is connected with an ablation needle, a protective assembly is sleeved outside the connecting end of the cable body and the connector, the protective assembly comprises an outer bellows and an inner bellows, the inner bellows is nested inside the outer bellows, the cable body, the inner bellows and the outer bellows are concentrically arranged, a gap is left between the inner bellows and the outer bellows, a protective air bag is arranged in the gap between the inner bellows and the outer bellows, and a buffer structure is arranged on the inner side of the inner bellows. In the utility model, a flexible support frame is formed by the outer bellows and the inner bellows, and the flexible support network composed of the gas damping effect of the protective air bag, the buffer spring and the memory alloy connecting ring can accurately resolve mechanical stress in different directions and block stress conduction.

Description

Technical Field

[0001] This utility model relates to the field of microwave ablation composite cable technology, specifically a microwave ablation composite cable with connector protection. Background Technology

[0002] Microwave ablation composite cables are the core transmission components of microwave ablation therapy equipment, primarily used to integrate microwave energy transmission, real-time monitoring, and treatment control in minimally invasive tumor treatment. They are a key component connecting the microwave generator and the ablation needle, directly affecting the precision, safety, and effectiveness of treatment, and are widely used in the clinical treatment of solid tumors such as liver cancer, lung cancer, and thyroid nodules. One end of the cable gradually transitions from a flexible body to a rigid connector. The other end of the connector is inserted into the microwave ablation device for connection. During the operation, the microwave ablation device is usually fixed next to the operating table or on a special bracket. The connector at its interface end is kept in a stable position by a rigid fixing structure, forming a fixed fulcrum for stress transmission. The ablation needle at the other end of the cable will be moved by the operation of medical staff. The cable will be subjected to various mechanical stresses such as tension, bending, and torsion as the medical staff operate. To mitigate the effects of stress, traditional solutions involve placing a protective sleeve made of rubber or silicone at the transition point of the connection. However, with prolonged use, this protective effect gradually diminishes. This not only fails to effectively protect the connection between the cable and the connector but may also exacerbate the mechanical stress concentration at the connection point due to damage to the protective sleeve. Therefore, a microwave ablation composite cable with connector protection is proposed to address these issues. Utility Model Content

[0003] The purpose of this invention is to provide a microwave ablation composite cable with connector protection to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A connector-protected microwave ablation composite cable includes a cable body and a connector. One end of the cable body is electrically connected to the connector, and the other end of the cable body is connected to an ablation needle. A protective component is sleeved on the outside of the connection end between the cable body and the connector. The protective component includes an outer corrugated tube and an inner corrugated tube. The inner corrugated tube is nested inside the outer corrugated tube, and the cable body, inner corrugated tube, and outer corrugated tube are concentrically arranged. A gap is left between the inner corrugated tube and the outer corrugated tube. A protective airbag is provided in the gap between the inner corrugated tube and the outer corrugated tube. A buffer structure is provided on the inner side of the inner corrugated tube. One end of the outer corrugated tube is connected to the end of the connector by hot melt adhesive, and the other end of the outer corrugated tube is connected to the outside of the cable body by hot melt adhesive.

[0005] As a further optimization of this utility model, the protective airbag is hollow inside, and multiple first air holes are opened on the outer side of the protective airbag, and multiple second air holes are opened on the outer side of the outer corrugated tube.

[0006] As a further optimization of this utility model, the first and second vents are of equal number and correspondingly positioned, and both the first and second vents are arranged in a ring-shaped array.

[0007] As a further optimization of this utility model, the first and second air holes are configured to match specifications, and the protective airbag communicates with the outside world through the first and second air holes.

[0008] As a further optimization of this utility model, the buffer structure is multiple, and the number of buffer structures is consistent with the number of wave crests of the inner bellows. All multiple buffer structures are disposed inside each wave crest of the inner bellows.

[0009] As a further optimization of this utility model, the buffer structure includes a pair of shape memory alloy connecting rings adapted to the inner side of the inner corrugated pipe crest, and the two shape memory alloy connecting rings are respectively fixedly connected to the inner sidewall of the inner corrugated pipe crest.

[0010] As a further optimization of this utility model, a plurality of buffer springs are provided between the two memory alloy connecting rings, and the plurality of buffer springs are arranged in a circular array. The two ends of the buffer springs are respectively fixedly connected to the sidewalls of the adjacent memory alloy connecting rings.

[0011] Compared with the prior art, the beneficial effects of this utility model are: In this invention, a flexible support frame is formed by the outer and inner corrugated tubes. Combined with the gas damping effect of the protective airbag and the elastic support network composed of buffer springs and shape memory alloy connecting rings, mechanical stress in different directions is precisely resolved, stress transmission is blocked to protect the structural integrity of the connection parts, and the electrical connection between the cable and the connector is reliable, providing support for precise surgical operations. At the same time, the protective components have both flexibility and deformation resistance, without restricting the operation and movement of medical staff, thus balancing the convenience of operation and structural safety. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an assembly drawing of the protective components of this utility model; Figure 3 This is a schematic diagram of the structure of the protective component of this utility model; Figure 4 This is a cross-sectional view of the protective component of this utility model; Figure 5 This is a cross-sectional assembly drawing of the protective component of this utility model; Figure 6 This utility model Figure 4 Enlarged view of point A; Figure 7 This is a schematic diagram of the structure of the protective airbag of this utility model; Figure 8 This is an exploded view of the buffer structure of this utility model.

[0013] In the diagram: 1. Cable body; 2. Connector; 3. Ablation needle; 4. Protective component; 41. Outer corrugated tube; 42. Inner corrugated tube; 43. Protective airbag; 44. First air hole; 45. Second air hole; 46. Buffer structure; 461. Shape memory alloy connecting ring; 462. Buffer spring. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0016] Please see Figures 1-8 This utility model provides a technical solution: A connector-protected microwave ablation composite cable includes a cable body 1 and a connector 2. One end of the cable body 1 is electrically connected to the connector 2, and the other end of the cable body 1 is connected to an ablation needle 3. A protective component 4 is sleeved on the outside of the connection end between the cable body 1 and the connector 2. The protective component 4 includes an outer corrugated tube 41 and an inner corrugated tube 42. The inner corrugated tube 42 is nested inside the outer corrugated tube 41, and the cable body 1, the inner corrugated tube 42, and the outer corrugated tube 41 are concentrically arranged. A gap is left between the inner corrugated tube 42 and the outer corrugated tube 41. A protective airbag 43 is provided in the gap between the inner corrugated tube 42 and the outer corrugated tube 41. A buffer structure 46 is provided on the inner side of the inner corrugated tube 42. One end of the outer corrugated tube 41 is connected to the end of the connector 2 by hot melt adhesive, and the other end of the outer corrugated tube 41 is connected to the outside of the cable body 1 by hot melt adhesive.

[0017] It should be noted that the cable as a whole uses the cable body 1 as the core of transmission. One end is connected to the connector 2 through electrical connection to realize signal and energy transmission, and the other end is connected to the ablation needle 3 for clinical ablation operations. The connection end between the cable body 1 and the connector 2 is a mechanically weak area. Therefore, a protective component 4 is sleeved on the outside to form a protective barrier. The outer corrugated tube 41 and the inner corrugated tube 42 are concentrically set. This coaxial design ensures that the force is evenly distributed when external force is applied, and avoids local stress concentration. The two ends of the outer corrugated tube 41 are fixedly connected to the end of the connector 2 and the outside of the cable body 1 respectively by hot melt adhesive, which not only achieves sealing protection, but also completely wraps the connection part between the connector 2 and the cable body 1, blocking the intrusion path of external dust and liquid. As a further implementation of this solution, the protective airbag 43 is hollow inside, and multiple first air holes 44 are opened on the outside of the protective airbag 43. Multiple second air holes 45 are opened on the outside of the outer corrugated tube 41. The number of first air holes 44 and second air holes 45 are equal and their positions are corresponding. The first air holes 44 and second air holes 45 are arranged in a ring-shaped array. The first air holes 44 and second air holes 45 are matched in specifications. The protective airbag 43 communicates with the outside world through the first air holes 44 and second air holes 45. It should be noted that a protective airbag 43 is installed in the annular gap between the inner corrugated pipe 42 and the outer corrugated pipe 41. The airbag is made of elastic and wear-resistant material and has a hollow interior to form a buffer cavity. The number of first air holes 44 on the outside of the protective airbag 43 is equal to the number of second air holes 45 on the outside of the outer corrugated pipe 41 and their positions correspond one-to-one. They are all arranged in a ring array. This air hole corresponding design allows the protective airbag 43 to communicate with the outside atmosphere through the first air holes 44 and the second air holes 45. It can absorb energy through gas compression when subjected to external impact and balance the internal and external air pressure to avoid abnormal expansion or contraction of the airbag caused by temperature difference or deformation, thus ensuring stable buffering performance. As a further implementation of this solution, there are multiple buffer structures 46, and the number of buffer structures 46 is consistent with the number of crests of the inner bellows 42. Multiple buffer structures 46 are all set inside each crest of the inner bellows 42. Each buffer structure 46 includes a pair of shape memory alloy connecting rings 461 that are adapted to the inner side of the crests of the inner bellows 42. The two shape memory alloy connecting rings 461 are fixedly connected to the inner sidewall of the crest of the inner bellows 42 respectively. Multiple buffer springs 462 are provided between the two shape memory alloy connecting rings 461. The multiple buffer springs 462 are arranged in a ring-shaped array. The two ends of the buffer springs 462 are fixedly connected to the sidewall of the adjacent shape memory alloy connecting rings 461 respectively. It should be noted that the buffer structure 46 inside the inner corrugated tube 42 further strengthens the protection of the cable body 1. Its number is consistent with the number of crests of the inner corrugated tube 42, and it is precisely set inside each crest. Each buffer structure 46 consists of a pair of shape memory alloy connecting rings 461 and multiple buffer springs 462. The shape memory alloy connecting rings 461 are tightly fitted and fixed to the inner sidewall of the crest of the inner corrugated tube 42. Utilizing the characteristic of shape memory alloy material that "can recover its original shape after deformation", it provides basic support and shape memory capability for the buffer structure 46. The buffer springs 462 distributed in a ring array between the two shape memory alloy connecting rings 461 are fixed at both ends to the sidewall of the adjacent shape memory alloy connecting rings 461 to form an elastic support network. When the cable body 1 is subjected to radial compression or bending stress, the buffer springs 462 absorb energy through expansion and contraction deformation. Together with the shape recovery force of the shape memory alloy connecting rings 461, they jointly reduce the impact of external force on the internal core wire of the cable body 1. Specifically: the outer corrugated tube 41 and the inner corrugated tube 42 themselves have the flexible characteristics of corrugated tubes, and can bend and deform flexibly with the cable body 1, avoiding the protective structure from restricting the clinical operation flexibility of the cable body 1; the middle protective airbag 43 relieves axial and radial impact through gas buffering; the inner buffer structure 46 acts directly on the surface of the cable body 1, forming a triple protection system of "outer impact resistance - middle buffer energy dissipation - inner flexible support". This multi-level protection design can protect the connection stability between the cable body 1 and the connector 2 without sacrificing the operation flexibility of the cable body 1, effectively extending the service life of the cable body 1 and reducing the clinical use risk.

[0018] Workflow: Under non-stress conditions, the protective component 4 provides normal protection for the connection end between the cable body 1 and the connector 2. The outer corrugated tube 41 is fixed by hot melt adhesive at both ends, completely wrapping the connection part to form a physical barrier, blocking external dust and liquid from directly contacting the interface, avoiding oxidation corrosion or short circuit risks. The inner corrugated tube 42 is nested inside the outer corrugated tube 41 and is concentrically set, forming a double rigid support frame together with the outer corrugated tube 41. The structural characteristics of the corrugated tube are used to maintain the shape of the protective space, while maintaining a certain degree of flexibility, ensuring that the connection end of the cable body 1 will not be damaged due to excessive deformation during normal bending operations. In the inner buffer structure 46, the shape memory alloy connecting ring 461 fits against the inner side of the crest of the inner corrugated tube 42 and remains in a natural state. The buffer spring 462 is in a miniaturized standby state, forming a gentle support for the surface of the cable body 1. When the connection end of the cable body 1 is subjected to various mechanical stresses such as tension, bending, and torsion due to the operation of medical staff, the protective component 4 activates a multi-level buffering mechanism: the outer corrugated tube 41 of the outer layer first comes into contact with the external force, and its corrugated structure disperses the impact force through deformation, converting the concentrated stress into a dispersed force along the axial direction of the corrugated tube; after the impact force is transmitted to the middle layer, the protective airbag 43 is squeezed and deformed, and the internal air is slowly discharged through the first air hole 44 and the second air hole 45 (the two are in corresponding positions and have matching specifications), using the gas damping effect to absorb the impact energy and reduce the external force transmission efficiency; at the same time, the inner corrugated tube 42 deforms synchronously with the outer corrugated tube 41, and the buffer structure 46 on the inner side of its crest is activated by force, the buffer spring 462 is compressed, and further absorbs the remaining impact force through elastic deformation, avoiding the external force from acting directly on the internal core wire of the cable body 1. If the external force causes the inner corrugated tube 42 to undergo abnormal deformation, the shape memory alloy connecting ring 461 will generate a restoring force by virtue of its shape memory characteristics, constraining the corrugated tube from excessive deformation and preventing the protective structure from failing; During clinical operations, the cable 1 needs to be bent and its angle adjusted frequently. At this time, the protective component 4 demonstrates its flexible adaptability: the outer corrugated tube 41 and the inner corrugated tube 42 can deform synchronously with the bending of the cable 1. The expansion and contraction characteristics of the corrugated structure ensure that the bending process is smooth and without jamming, avoiding the limitation of operational flexibility due to the rigidity of the protective structure; the protective airbag 43 adapts to the shape change of the corrugated tube when bending, and the internal air flows freely through the air holes, balancing the air pressure difference at the bending part, and preventing the protective airbag 43 from rupturing due to excessive local air pressure or losing its buffering effect due to excessive contraction; the shape memory alloy connecting ring 461 in the buffer structure 46 adjusts its shape slightly with the bending angle of the inner corrugated tube 42, and the buffer spring 462 adapts to the bending direction, always maintaining uniform support for the cable 1, and avoiding excessive local stress on the cable 1 during bending, which may cause the core wire to break. After the external force or bending operation ends, the protective components 4 automatically reset: the outer bellows 41 and inner bellows 42 recover their initial shape due to their own elasticity; the protective airbag 43 draws in air from the outside through the first air hole 44 and the second air hole 45, refills and restores the buffer standby state; in the buffer structure 46, the buffer spring 462 releases elastic potential energy to extend and reset, and the shape memory alloy connecting ring 461 drives the inner bellows 42 to restore the standard shape, ensuring that the protective space is reshaped. The entire reset process does not require manual intervention, so that the protective components 4 quickly return to the standby state, ready to cope with the next external impact, and continuously ensure the structural stability and electrical connection reliability of the connection end between the cable body 1 and the connector 2.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A connector-protected microwave ablation composite cable, comprising a cable body (1) and a connector (2), characterized in that: One end of the cable (1) is electrically connected to the connector (2), and the other end of the cable (1) is connected to an ablation needle (3). A protective component (4) is sleeved on the outside of the connection end between the cable (1) and the connector (2). The protective component (4) includes an outer corrugated pipe (41) and an inner corrugated pipe (42). The inner corrugated pipe (42) is nested inside the outer corrugated pipe (41). The cable body (1), the inner corrugated pipe (42) and the outer corrugated pipe (41) are concentrically arranged. There is a gap between the inner corrugated pipe (42) and the outer corrugated pipe (41). A protective airbag (43) is provided in the gap between the inner corrugated pipe (42) and the outer corrugated pipe (41). A buffer structure (46) is provided on the inner side of the inner corrugated pipe (42). One end of the outer corrugated tube (41) is connected to the end of the connector (2) by hot melt adhesive, and the other end of the outer corrugated tube (41) is connected to the outside of the cable body (1) by hot melt adhesive.

2. The microwave ablation composite cable with connector protection according to claim 1, characterized in that: The protective airbag (43) is hollow inside, and multiple first air holes (44) are opened on the outside of the protective airbag (43), and multiple second air holes (45) are opened on the outside of the outer corrugated tube (41).

3. The microwave ablation composite cable with connector protection according to claim 2, characterized in that: The first vent (44) and the second vent (45) are of equal number and are positioned correspondingly. The first vent (44) and the second vent (45) are arranged in a ring-shaped array.

4. The microwave ablation composite cable with connector protection according to claim 2, characterized in that: The first air hole (44) and the second air hole (45) are configured to match specifications, and the protective airbag (43) is connected to the outside world through the first air hole (44) and the second air hole (45).

5. The microwave ablation composite cable with connector protection according to claim 1, characterized in that: There are multiple buffer structures (46), and the number of buffer structures (46) is consistent with the number of peaks of the inner bellows (42). Multiple buffer structures (46) are all located inside each peak of the inner bellows (42).

6. The microwave ablation composite cable with connector protection according to claim 1, characterized in that: The buffer structure (46) includes a pair of shape memory alloy connecting rings (461) adapted to the inner side of the crest of the inner bellows (42), and the two shape memory alloy connecting rings (461) are respectively fixedly connected to the inner sidewall of the crest of the inner bellows (42).

7. A connectorable protected microwave ablation composite cable according to claim 6, characterized in that: Multiple buffer springs (462) are provided between the two memory alloy connecting rings (461). The multiple buffer springs (462) are arranged in a ring-shaped array. The two ends of the buffer springs (462) are fixedly connected to the sidewalls of the adjacent memory alloy connecting rings (461).

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