Bone filling bag and preparation method thereof

Abstract

The invention provides a bone filling bag and a preparation method thereof, the bag is provided with a plurality of layers of net structures from inside to outside, each layer of net structure comprises a first balloon, a second balloon and a waist tightening structure connected with the first balloon and the second balloon; a plurality of eyelets are formed in each layer of net-shaped structure, and the apertures of the eyelets in the net-shaped structure are sequentially decreased from the inner layer to the outer layer. The bone filling bag is of a multi-layer waisted structure, the problem of stress concentration of a circular structure is effectively relieved, the mechanical property of the bag is improved, leakage of a bone filling material caused by breakage of the bag is prevented, surrounding non-treated tissue cannot bear compression of overlarge stress, the bag is easy to take out, and the bone filling bag is convenient to use. The problem that the bag is difficult to take out after an operation is solved, the hole diameters of the multiple layers of net structures of the bag are sequentially decreased from the inner layer to the outer layer, bone cement can be filtered layer by layer, the dispersing force and injection force of the bone cement are improved, and the bone cement is evenly dispersed in the designated position.

Description

technical field [0001] The invention relates to the field of medical devices, in particular, to a bone-filled capsular bag and a preparation method thereof. Background technique [0002] Bone cement filling has the advantages of fast fixation, permanent existence and good biocompatibility in the treatment of bone defects and fractures. The cement is directly poured into the capsular bag and the capsular bag containing the bone cement is transported to the designated position in the body, the bone cement is released, the bone cement is rapidly solidified, and the capsular bag is removed from the body after surgery. Since the capsular bag is inserted into the body through a minimally invasive procedure, the capsular bag usually enters the body in a folded and contracted form, but the problem of insufficient expansion of the capsular bag when the bone cement is released from the capsular bag may lead to enlarged surgery. Difficulty, and even cause surgical failure, so the stru...

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a bone filling pouch, which is a multi-layered waist-shaped structure, which effectively alleviates the problem of stress concentration in the circular structure, improves the mechanical properties of the pouch, and prevents the The leakage of the bone filling material caused by the rupture will not cause the surrounding non-treatment tissue to bear excessive stress, and it is easier to remove, which solves the problem of difficult removal of the postoperative capsule bag, and the multi-layer mesh structure of the capsule bag of the present invention The pore size of the upper layer decreases in order from the inner layer to the outer layer, which can filter the bone cement layer by layer, improve the dispersion force and injection force of the bone cement, and make the bone cement evenly dispersed in the designated position

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