Dura-puncturing trocar and support handle thereof

Abstract

The invention discloses a dura-puncturing trocar and a support handle thereof. The dura-puncturing trocar is composed of integration of a cylindrical portion at the lower end and a triangular blade-shaped conical head at the upper end. The cross section of the triangular blade-shaped conical head is of a triangular tip shape, and the triangular blade-shaped conical head is formed by connection oftails of three triangular small blades. A junction of the three triangular small blades constitutes a blunt-tip portion in 0.5mm diameter. According to the present invention, the dura-puncturing trocar cooperates with a traditional meninx-puncturing trocar to puncture dura, thereby avoiding damage of blood vessels on a brain surface, and a support limit handle of the dura-puncturing trocar can bequickly assembled and used to quickly adjust length of the conical head, so that the dura-puncturing trocar is simple, convenient, and easy to disinfect and store.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a dura mater puncture cone and a matching handle thereof. Background technique [0002] The existing puncture meningeal cones in the market all adopt triangular pyramids, such as figure 1 As shown, the disadvantage is that the apex of the triangular pyramid is sharp. In actual operation, when puncturing the dura mater, the penetration depth generally needs to reach the surface of the brain. In this way, the tip of the cone is easy to damage the blood vessels on the surface of the brain and cause bleeding. Otherwise, the meningeal pores The inner diameter will be too small. Contents of the invention [0003] In order to solve the above problems, the present invention provides a dural puncture cone, which can be used in conjunction with a traditional meningeal puncture cone to puncture the dura mater, which can well avoid damage to blood vessels on the brain surface. [0004]...

AI Technical Summary

Problems solved by technology

[0002] Existing puncture meningeal cones in the market all adopt triangular pyramids, such as figure 1 As shown, the disadvantage is that the apex of the triangular pyramid is sharp. In actual operation, when puncturing the dura mater, the penetration depth generally needs to reach the surface of the brain, so that the tip of the cone is easy to damage the blood vessels on the surface of the brain and cause bleeding, otherwise the meningeal pores inner diameter will be too small

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