Adjustable valve clamping system

Abstract

The invention provides an adjustable valve clamping system. The adjustable valve clamping system comprises a pushing device and a valve clamping device, wherein the valve clamping device comprises a clamping device body and a clamping device adjusting mechanism. The clamping device body comprises a fixing base, a near-end clamping piece and a far-end clamping piece, wherein the fixing base is used for being connected with the pushing device so that the clamping device body can be pushed through the pushing device, and the near-end clamping piece and the far-end clamping piece are matched to clamp the valve tissue; and the clamping device adjusting mechanism is located between the pushing device and the fixing base and comprises an adjusting piece which can slide in the axial direction till the fixing base is sleeved with the adjusting piece, and when the clamping device body is folded, the adjusting piece abuts against the near-end clamping piece so as to adjust the traction degree of the clamping device body to the valve tissue. According to the adjustable valve clamping system, it can be guaranteed that the clamping device body has enough clamping force so that slipping can be avoided, and the degree of traction on the valve tissue by the clamping device body can be adjusted through the clamping device adjusting mechanism.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to an adjustable valve clipping system. Background technique [0002] see figure 1 , the mitral valve 1 is a one-way valve located between the left atrium 2 and the left ventricle 3 of the heart. A normal and healthy mitral valve 1 can control blood flow from the left atrium 2 to the left ventricle 3 while preventing blood flow from the left ventricle 3 to the left atrium 2. The mitral valve 1 includes a pair of leaflets called an anterior leaflet 1a and a posterior leaflet 1b. The anterior lobe 1a and the posterior lobe 1b are fixed to the papillary muscle of the left ventricle 3 through the chordae 4 . Under normal circumstances, when the left ventricle 3 of the heart contracts, the edges of the anterior lobe 1a and the posterior lobe 1b are completely joined to prevent blood from flowing from the left ventricle 3 to the left atrium 2 . see figure 2 , when the leaflets of the ...

AI Technical Summary

Problems solved by technology

However, because the valve leaflet tissue is sticky and always in a pulsating state, when the valve leaflet is clamped by the cooperation between the rigid forceps arm and the elastic body, the clamping force may not be enough, resulting in the valve clamp easily slipping off; and, for In patients with small leaflet spacing, mitral regurgitation may not be adequately treated due to the presence of elastomers that may result in suboptimal leaflet retraction after closure

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