Measuring guide wire for blood pressure in blood vessels

Abstract

The invention relates to a measuring guide wire for blood pressure in blood vessels. A guide wire far-end main body comprises an inner core wire and a far-end soft section, a developing ring, a near-end soft section, a near-end pipe body, a pressure sensor and a plurality of guide wires which sleeve the inner core wire, wherein a near-end connecting section comprises a plurality of electric conductive rings and a plurality of inner-layer insulation rings; a rear-end pipe body is coaxially arranged with the electric conductive rings and the inner-layer insulation rings; the inner-layer insulation rings are locally located in the electric conductive rings; the outer diameter of the rear-end pipe body is identical to the outer diameters of the electric conductive rings; the near-end connecting section further comprises a plurality of connectors which are respectively arranged on the outer side of the inner-layer insulation rings and can cause the near-end pipe body and the electric conductive ring adjacent to the near-end pipe body as well as the adjacent electric conductive rings smoothly transit. According to the invention, the transmission connectivity of the pressure signal is ensured, the matching degree between the measuring guide wire and the other endovascular intervention instruments (such as, balloon catheter, bracketry and microtubule) is enhanced and the requirement for the insulation ring alignment in the assembling process of the electric conductive rings is reduced.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to an intravascular blood pressure measuring guide wire used in vascular interventional operations. Background technique [0002] Myocardial ischemia caused by coronary artery stenosis requires revascularization of ischemia-related diseased vessels. Before determining the revascularization strategy, it is first necessary to find conclusive evidence of ischemia. At present, simple coronary angiography has limitations in identifying the culprit lesion causing ischemia, especially for intermediate lesions on imaging. The uncertainty caused by such limitations may mislead interventional physicians to deal with stenotic lesions that have no clinical significance, leading to over-medication, or failure to deal with ischemia-related vessels in a timely manner, resulting in patients not being treated effectively. [0003] Since Nico Pijls and De Bruyne proposed in the ...

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Problems solved by technology

Therefore, the design and manufacture of the pressure measurement guide wire need to consider its own structure to

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