Isolation mechanism for body floating type active medical device

Abstract

The utility model relates to an isolation mechanism for a body floating type active medical instrument. The isolation mechanism comprises a first connecting piece, a second connecting piece, a first insulating piece, a second insulating piece and an insulating screw, wherein the first insulating piece, the second insulating piece and the insulating screw are used for electrically isolating and connecting the first connecting piece and the second connecting piece; the first insulating part is sleeved outside the first connecting part, the second connecting part is sleeved outside the first insulating part, the second insulating part is assembled in the second connecting part and is opposite to the first insulating part, and the insulating screw is arranged in the second insulating part and is in threaded fit with the first connecting part. According to the utility model, the safety, reliability and stability of equipment in a complex medical environment can be effectively improved, and the requirements of electrical isolation and leakage current protection are met.

Description

Technical Field

[0001] This utility model belongs to the field of medical devices, specifically relating to an isolation mechanism for a body-floating active medical device. Background Technology

[0002] In modern medical environments, active medical devices are widely used in diagnosis, treatment, monitoring, and life support. These devices typically require direct or indirect contact with patients and rely on power sources, such as electric scalpels, electrocardiographs, infusion pumps, ultrasound equipment, and monitors. Because medical devices involve bioelectric safety, any electrical fault can lead to leakage current injuries, electric shock risks, or even death for patients. Therefore, international standards (such as IEC 60601-1) impose stringent safety requirements on medical devices, particularly regarding the electrical isolation design of patient connection points.

[0003] However, in medical settings, the electrical safety design of body-floating active devices (BF type) still faces many challenges, such as:

[0004] (1) Leakage current control: The leakage current of medical equipment needs to be strictly limited, but in the complex hospital power system environment, patients may suffer from the cumulative leakage current due to contact with multiple devices;

[0005] (2) Power isolation: Medical devices are usually powered by AC power or batteries, so an efficient electrical isolation scheme needs to be designed to prevent current leakage from inside or outside the device to the patient.

[0006] (3) Grounding and protection: While optimizing the grounding design, it is necessary to ensure electrical protection on the patient side.

[0007] Subsequently, ensuring reliable electrical isolation and leakage current protection for body-floating active devices is a key technical challenge in medical device design. Utility Model Content

[0008] The purpose of this invention is to provide an isolation mechanism for body-floating active medical devices to solve the problems of poor safety and reliability.

[0009] The isolation mechanism for a body-floating active medical device according to this utility model is implemented as follows:

[0010] An isolation mechanism for a body-floating active medical device includes a first connector and a second connector, as well as a first insulating member, a second insulating member, and an insulating screw for electrically isolating the first connector and the second connector.

[0011] The first insulating component is fitted outside the first connecting component, the second connecting component is fitted outside the first insulating component, the second insulating component is assembled inside the second connecting component and is disposed opposite to the first insulating component, and the insulating screw is disposed inside the second insulating component and is threadedly engaged with the first connecting component.

[0012] Furthermore, the first insulating member and the first connecting member are connected by a flat key;

[0013] The first insulating component and the flat key have a transition fit;

[0014] The first connector and the flat key have a transition fit.

[0015] Furthermore, the first connector includes a body segment and an assembly segment located to the right of the body segment with an outer diameter smaller than that of the body segment, and the first insulating member is installed on the outside of the assembly segment;

[0016] The first insulating component and the first connecting component are interference fit.

[0017] Furthermore, the outer wall of the first insulating member is provided with an axial protrusion, and the inner wall of the second connecting member is provided with an axial groove that mates with the axial protrusion.

[0018] The first insulating component and the second connecting component are interference fit.

[0019] Furthermore, the right end of the first insulating member is provided with a necked section, and the right end face of the necked section is disposed opposite to the left end face of the second insulating member.

[0020] Furthermore, the left end of the second insulating member is provided with a closing ring extending in the direction of its axis, and the right end face of the first insulating member is disposed opposite to the outer wall of the closing ring.

[0021] Furthermore, the insulating screw is assembled in the inner hole of the second insulating member, and its screw passes through the left end of the second insulating member and the right end of the first insulating member in sequence to be threadedly connected to the inner hole of the first connecting member.

[0022] Furthermore, an annular groove is provided between the head and the threaded section of the insulating screw, and an insulating sleeve is provided in the annular groove.

[0023] Furthermore, a limiting ring is provided on the inner wall of the second connector, and the first insulating member is located on the left side of the limiting ring and its necked section is assembled in the inner hole of the limiting ring.

[0024] The second insulating element is located on the right side of the limiting ring.

[0025] Furthermore, the second insulating member and the second connecting member are in a clearance fit.

[0026] After adopting the above technical solution, the beneficial effects of this utility model are as follows:

[0027] (1) The overall structure of this utility model is simple and easy to use, which reduces the difficulty in the diagnosis and treatment process;

[0028] (2) This utility model is applied to body-floating active medical devices, which can effectively improve the safety, reliability and stability of the device in complex medical environments and meet the requirements of electrical isolation and leakage current protection. Attached Figure Description

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] Figure 1 This is a structural diagram of the isolation mechanism for a body-floating active medical device according to a preferred embodiment of the present invention;

[0031] Figure 2 An axial cross-sectional view of the isolation mechanism for a body-floating active medical device according to a preferred embodiment of the present invention;

[0032] Figure 3 An exploded view of the isolation mechanism for a body-floating active medical device according to a preferred embodiment of the present invention;

[0033] Figure 4 A structural diagram of the second connecting member of the isolation mechanism for a body-floating active medical device according to a preferred embodiment of the present invention;

[0034] Figure 5 A structural diagram of the first insulating component of the isolation mechanism for a body-floating active medical device according to a preferred embodiment of the present invention;

[0035] In the figure: First connector 1, inner keyway 1-1, body section 1-2, assembly section 1-3, second connector 2, axial groove 2-1, limiting ring 2-2, first insulating component 3, outer keyway 3-1, axial protrusion 3-2, necking section 3-3, second insulating component 4, closing ring 4-1, insulating screw 5, annular groove 5-1, external thread 5-2, flat key 6, insulating sleeve 7. Detailed Implementation

[0036] 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 scope of protection of this utility model.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0038] like Figure 1-5 As shown, an isolation mechanism for a body-floating active medical device includes a first connector 1 and a second connector 2, as well as a first insulating member 3, a second insulating member 4, and an insulating screw 5 for electrically isolating the first connector 1 and the second connector 2. The first insulating member 3 is fitted outside the first connector 1, the second connector 2 is fitted outside the first insulating member 3, the second insulating member 4 is fitted inside the second connector 2 and is disposed opposite to the first insulating member 3, and the insulating screw 5 is disposed inside the second insulating member 4 and is threadedly engaged with the first connector 1.

[0039] Among them, the first connector 1, the second connector 2, the first insulating component 3, and the second insulating component 4 are all cylindrical structures.

[0040] To prevent axial rotation between the first insulating member 3 and the first connecting member 1, the first insulating member 3 and the first connecting member 1 are fitted together by a flat key 6.

[0041] Specifically, the outer wall of the front end of the first connecting member 1 is provided with an inner keyway 1-1 located in its axial direction, and the inner wall of the first insulating member 3 is provided with an outer keyway 3-1 opposite to the inner keyway 1-1. A flat key 6 is installed in the space formed by the inner keyway 1-1 and the outer keyway 3-1. Through the engagement of the flat key 6, the torsional strength of the axial rotation between the first insulating member 3 and the first connecting member 1 can be guaranteed, thus ensuring the mechanical strength of the isolation mechanism.

[0042] The first insulating component 3 and the flat key 6 are in a transition fit, which can ensure the assembly accuracy of the first insulating component 3 and the first connecting component 1 in radial rotation.

[0043] The first connector 1 and the flat key 6 are in a transition fit, which can ensure that the relative position of the flat key 6 and the first connector 1 meets the accuracy requirements.

[0044] In order to achieve the cooperation between the first connector 1 and the first insulating member 3, the first connector 1 includes a body section 1-2 and an assembly section 1-3 located on the right side of the body section 1-2 and having an outer diameter smaller than that of the body section 1-2. The first insulating member 3 is installed on the outside of the assembly section 1-3.

[0045] The inner keyway 1-1 is located on the outer wall of the assembly section 1-3. During assembly, the first insulating component 3 is fitted onto the outside of the assembly section 1-3.

[0046] The first insulating component 3 and the first connecting component 1 are interference fit, which can ensure the assembly accuracy of the first insulating component 3 and the first connecting component 1 in radial translation.

[0047] To prevent axial rotation between the first insulating member 3 and the second connecting member 2, an axial protrusion 3-2 is provided on the outer wall of the first insulating member 3, and an axial groove 2-1 that mates with the axial protrusion 3-2 is provided on the inner wall of the second connecting member 2.

[0048] Among them, the axial protrusion 3-2, which is the external keyway 3-1, forms an external convex structure. Through the cooperation between the axial protrusion 3-2 and the axial groove 2-1, the torsional strength of the axial rotation between the first insulating member 3 and the second connecting member 2 can be guaranteed, and the mechanical strength of the isolation mechanism can be further guaranteed.

[0049] The first insulating member 3 and the second connecting member 2 are interference fit, which can ensure the assembly accuracy of the second connecting member 2 and the first insulating member 3 in radial translation and rotation.

[0050] In order to electrically isolate the first connector 1 and the second connector 2 using the first insulating member 3 and the second insulating member 4, a necked section 3-3 is provided at the right end of the first insulating member 3, and the right end face of the necked section 3-3 is positioned opposite to the left end face of the second insulating member 4.

[0051] The first connector 1 is located in the inner hole of the main body (i.e. the rear part of the necked section 3-3) of the first insulating member 3, while the necked section 3-3 is placed on the front side of the first insulating member 3, and its right end face is in contact with the left end face of the first insulating member 3.

[0052] In order to limit the head of the insulating screw 5, the left end of the second insulating member 4 is provided with a closing ring 4-1 extending in the direction of its axis, and the right end face of the first insulating member 3 is positioned opposite to the outer wall of the closing ring 4-1.

[0053] When installing the insulating screw 5, it is inserted into the inner hole of the second insulating member 4 from the front side. When connecting the insulating screw 5 to the first connecting member 1, the head of the insulating screw 5 is restricted inside the second insulating member 4 by the closing ring 4-1, thereby realizing the connection of the first insulating member 3, the second insulating member 4, the first connecting member 1 and the second connecting member 2.

[0054] The outer wall of the closing ring 4-1 is in contact with the right end face of the necked section 3-3.

[0055] To ensure the connection and fixation of the first insulating component 3, the second insulating component 4, the first connecting component 1, and the second connecting component 2, the insulating screw 5 is assembled in the inner hole of the second insulating component 4, and its screw passes through the left end of the second insulating component 4 and the right end of the first insulating component 3 in sequence and is threadedly connected to the inner hole of the first connecting component 1.

[0056] The right end of the first connector 1 has an internal thread, and the tail of the insulating screw 5 has an external thread 5-2. The screw of the insulating screw 5 passes through the left end of the second insulating part 4 (the inner hole of the constriction ring 4-1) and the right end of the first insulating part 3 (the inner hole of the necked section 3-3) in sequence, and then connects with the inner hole of the first connector 1 by thread.

[0057] The connection of the insulating screw 5 ensures the overall axial assembly accuracy of the isolation mechanism.

[0058] To further improve electrical isolation and leakage current protection, an annular groove 5-1 is provided between the head and the threaded section of the tail of the insulating screw 5, and an insulating sleeve 7 is provided inside the annular groove 5-1.

[0059] The outer side of the insulating sleeve 7 is the connection point between the first insulating element 3 and the second insulating element 4. By setting the insulating sleeve 7, the requirements of electrical isolation and leakage current protection can be ensured while meeting the mechanical strength requirements.

[0060] Preferably, the insulating sleeve 7 can be, but is not limited to, an insulating heat shrink sleeve.

[0061] In order to position the first insulating element 3, a limiting ring 2-2 is provided on the inner wall of the second connecting element 2. The first insulating element 3 is located on the left side of the limiting ring 2-2 and its necked section 3-3 is assembled in the inner hole of the limiting ring 2-2. The second insulating element 4 is located on the right side of the limiting ring 2-2.

[0062] The second insulating component 4 and the second connecting component 2 are clearance fit, which makes the assembly process simpler and more reliable.

[0063] Among them, the first connector 1, the second connector 2, the first insulator 3 and the second insulator 4 are all made of PEEK polymer material, but not limited to this material. Other insulating non-metallic materials such as ceramics can also be used. This connection can ensure processing accuracy and mechanical strength, and also meet the requirements of electrical isolation and leakage current protection.

[0064] When assembling the isolation mechanism, first press the flat key 6 into the inner keyway 1-1 of the first connector 1, ensuring that the right end face of the flat key 6 does not exceed the right end face of the first connector 1. Apply lubricant (such as petroleum jelly or silicone oil) evenly to the right end of the first connector 1. Then, put the first insulating part 3 on the first connector 1, aligning its radial direction through the flat key 6. Similarly, apply lubricant evenly to the outside of the first insulating part 3. Then, put the second connector 2 on the first insulating part 3 and use a fixture to press the second connector 2 and the first insulating part 3 tightly onto the first connector 1. Then, remove the fixture and put the second insulating part 4 into the second connector 2. Then, insert the insulating screw 5 with the insulating sleeve 7 into the second insulating part 4 and screw it into the first connector 1.

[0065] This invention can be applied to the end effector of a robotic arm in an orthopedic surgical robot system. The tail of the first connector 1 is equipped with a corresponding connecting flange for easy connection to the robotic arm and other structures. Compared to traditional isolation and protection methods, this invention has a simpler structure, is more convenient to use, and reduces the difficulty of the diagnostic and treatment process.

[0066] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An isolation mechanism for a body-floating active medical device, characterized in that, It includes a first connector (1) and a second connector (2), as well as a first insulating member (3), a second insulating member (4) and an insulating screw (5) for electrically isolating the first connector (1) and the second connector (2); The first insulating member (3) is fitted outside the first connecting member (1), the second connecting member (2) is fitted outside the first insulating member (3), the second insulating member (4) is assembled inside the second connecting member (2) and is disposed opposite to the first insulating member (3), and the insulating screw (5) is disposed inside the second insulating member (4) and is threadedly engaged with the first connecting member (1).

2. The isolation mechanism for a body-floating active medical device according to claim 1, characterized in that, The first insulating member (3) and the first connecting member (1) are connected by a flat key (6); The first insulating element (3) and the flat key (6) are in a transition fit; The first connector (1) and the flat key (6) are in a transition fit.

3. The isolation mechanism for a body-floating active medical device according to claim 1, characterized in that, The first connector (1) includes a body section (1-2) and an assembly section (1-3) located to the right of the body section (1-2) and having an outer diameter smaller than that of the body section (1-2). The first insulating member (3) is installed on the outside of the assembly section (1-3). The first insulating member (3) and the first connecting member (1) are interference fit.

4. The isolation mechanism for a body-floating active medical device according to claim 1, characterized in that, The outer wall of the first insulating member (3) is provided with an axial protrusion (3-2), and the inner wall of the second connecting member (2) is provided with an axial groove (2-1) that mates with the axial protrusion (3-2). The first insulating member (3) and the second connecting member (2) are interference fit.

5. The isolation mechanism for a body-floating active medical device according to claim 1, characterized in that, The right end of the first insulating member (3) is provided with a necked section (3-3), and the right end face of the necked section (3-3) is disposed opposite to the left end face of the second insulating member (4).

6. The isolation mechanism for a body-floating active medical device according to claim 1, characterized in that, The left end of the second insulating member (4) is provided with a closing ring (4-1) extending in the direction of its axis, and the right end face of the first insulating member (3) is disposed opposite to the outer wall of the closing ring (4-1).

7. The isolation mechanism for a body-floating active medical device according to claim 1, characterized in that, The insulating screw (5) is assembled in the inner hole of the second insulating member (4), and its screw passes through the left end of the second insulating member (4) and the right end of the first insulating member (3) in sequence to be threaded into the inner hole of the first connecting member (1).

8. The isolation mechanism for a body-floating active medical device according to claim 1, characterized in that, An annular groove (5-1) is provided between the head and the threaded section of the tail of the insulating screw (5), and an insulating sleeve (7) is provided in the annular groove (5-1).

9. The isolation mechanism for a body-floating active medical device according to claim 5, characterized in that, A limiting ring (2-2) is provided on the inner wall of the second connector (2), the first insulating member (3) is located on the left side of the limiting ring (2-2) and its necked section (3-3) is assembled in the inner hole of the limiting ring (2-2), and the second insulating member (4) is located on the right side of the limiting ring (2-2); The first insulating member (3) and the second connecting member (2) are interference fit.

10. The isolation mechanism for a body-floating active medical device according to claim 1, characterized in that, The second insulating member (4) and the second connecting member (2) are in clearance fit.

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