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CN-224232985-U - Isolation mechanism for body floating type active medical instrument

CN224232985UCN 224232985 UCN224232985 UCN 224232985UCN-224232985-U

Abstract

The utility model relates to an isolation mechanism for a body floating type active medical instrument, which 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 piece is sleeved outside the first connecting piece, the second connecting piece is sleeved outside the first insulating piece, the second insulating piece is assembled in the second connecting piece and is arranged opposite to the first insulating piece, and the insulating screw is arranged in the second insulating piece and is in threaded fit with the first connecting piece. The utility model can effectively improve the safety, reliability and stability of the equipment in a complex medical environment and meet the requirements of electric isolation and leakage current protection.

Inventors

  • YANG MINGHAO
  • MA RONGLI

Assignees

  • 常州市康辉医疗器械有限公司

Dates

Publication Date
20260512
Application Date
20250513

Claims (10)

  1. 1. An isolation mechanism for a body floating type active medical instrument is characterized by comprising a first connecting piece (1) and a second connecting piece (2), and a first insulating piece (3), a second insulating piece (4) and an insulating screw (5) which are used for electrically isolating and connecting the first connecting piece (1) and the second connecting piece (2); The first insulating part (3) is sleeved outside the first connecting part (1), the second connecting part (2) is sleeved outside the first insulating part (3), the second insulating part (4) is assembled in the second connecting part (2) and is opposite to the first insulating part (3), and the insulating screw (5) is arranged in the second insulating part (4) and is in threaded fit with the first connecting part (1).
  2. 2. The isolation mechanism for a body floating active medical device according to claim 1, wherein the first insulator (3) is mated with the first connector (1) by means of a flat key (6); the first insulating piece (3) is in transition fit with the flat key (6); the first connecting piece (1) is in transition fit with the flat key (6).
  3. 3. The isolation mechanism for a body floating active medical device according to claim 1, wherein the first connector (1) comprises a body section (1-2), and a fitting section (1-3) located on the right side of the body section (1-2) and having an outer diameter smaller than the body section (1-2), the first insulator (3) being mounted outside the fitting section (1-3); The first insulating piece (3) is in interference fit with the first connecting piece (1).
  4. 4. The isolation mechanism for a body floating type active medical device according to claim 1, wherein an axial protrusion (3-2) is provided on an outer wall of the first insulating member (3), and an axial groove (2-1) which is matched with the axial protrusion (3-2) is provided on an inner wall of the second connecting member (2); the first insulating piece (3) and the second connecting piece (2) are in interference fit.
  5. 5. The isolation mechanism for a body floating type active medical device according to claim 1, wherein a necked section (3-3) is provided at a right end of the first insulating member (3), and a right end face of the necked section (3-3) is provided opposite to a left end face of the second insulating member (4).
  6. 6. The isolation mechanism for a body floating type active medical device according to claim 1, wherein a closing ring (4-1) extending toward an axial direction of the second insulating member (4) is provided at a left end of the second insulating member (4), and a right end face of the first insulating member (3) is provided opposite to an outer wall of the closing ring (4-1).
  7. 7. The isolation mechanism for a body floating active medical device according to claim 1, wherein the insulating screw (5) is fitted in the inner bore of the second insulating member (4), and its screw rod is threaded with the inner bore of the first connecting member (1) sequentially through the left end of the second insulating member (4) and the right end of the first insulating member (3).
  8. 8. The isolation mechanism for a body floating type active medical device according to claim 1, wherein an annular groove (5-1) is arranged between the thread sections of the head part and the tail part of the insulating screw (5), and an insulating sleeve (7) is sleeved in the annular groove (5-1).
  9. 9. The isolation mechanism for a body floating active medical device according to claim 5, wherein a stop collar (2-2) is provided on the inner wall of the second connector (2), the first insulator (3) is located on the left side of the stop collar (2-2) and its necked section (3-3) is fitted in the inner hole of the stop collar (2-2), the second insulator (4) is located on the right side of the stop collar (2-2); the first insulating piece (3) and the second connecting piece (2) are in interference fit.
  10. 10. The isolation mechanism for a body floating active medical device of claim 1, wherein the second insulator (4) is a clearance fit with the second connector (2).

Description

Isolation mechanism for body floating type active medical instrument Technical Field The utility model belongs to the field of medical instruments, and particularly relates to an isolation mechanism for a body floating type active medical instrument. Background In modern medical environments, active medical devices (ACTIVE MEDICAL DEVICE) are widely used in the fields of diagnosis, therapy, monitoring, and life support. These devices typically require direct or indirect contact with the patient and rely on a power source to power, such as an electric scalpel, electrocardiograph, infusion pump, ultrasound device, monitor, etc. Since medical devices are involved in bioelectric safety (Bioelectric Safety), any electrical failure may result in the patient suffering from leakage current injury, shock risk, or even life threatening. Thus, international standards (such as IEC 60601-1) place stringent demands on the safety of medical equipment, especially in terms of the design of electrical isolation at the patient connection site. However, in a medical environment, the electrical safety design of body floating active devices (BF type) still faces challenges such as: (1) Leakage current control-leakage current of medical equipment needs to be strictly limited, but under the complex hospital power system environment, patients can suffer accumulated leakage current influence due to contact with a plurality of equipment; (2) The medical equipment is usually powered by an alternating current power supply or a battery, and a high-efficiency electric isolation scheme needs to be designed to avoid leakage of current inside or outside the equipment to a patient; (3) Grounding and shielding-optimizing the grounding design while ensuring electrical protection on the patient side. Then, how to ensure reliable electrical isolation and leakage current protection functions aiming at the isolation means of the body floating type active equipment is a key technical difficulty in the design of medical equipment. Disclosure of utility model The utility model aims to provide an isolation mechanism for a body floating type active medical instrument, which is used for solving the problems of poor safety and reliability. The isolation mechanism for the body floating type active medical instrument is realized by the following steps: An isolation mechanism for a body floating type active medical instrument 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. Further, the first insulating piece is matched with the first connecting piece through a flat key; the first insulating piece is in transition fit with the flat key; the first connecting piece is in transition fit with the flat key. Further, the first connecting piece comprises a body section and a fitting section which is positioned on the right side of the body section and has an outer diameter smaller than that of the body section, and the first insulating piece is arranged outside the fitting section; the first insulating piece is in interference fit with the first connecting piece. Further, an axial protrusion is arranged on the outer wall of the first insulating piece, and an axial groove matched with the axial protrusion is arranged on the inner wall of the second connecting piece; the first insulating member and the second connecting member are in interference fit. Further, the right end of the first insulating piece is provided with a necking section, and the right end face of the necking section is opposite to the left end face of the second insulating piece. Further, a closing ring extending towards the axis direction of the second insulating piece is arranged at the left end of the second insulating piece, and the right end face of the first insulating piece is arranged opposite to the outer wall of the closing ring. Further, the insulating screw is assembled in the inner hole of the second insulating piece, and the screw rod of the insulating screw sequentially penetrates through the left end of the second insulating piece and the right end of the first insulating piece to be in threaded connection with the inner hole of the first connecting piece. Further, an annular groove is arranged between the thread sections of the head part and the tail part of the insulating screw, and an insulating sleeve is sleeved in th