Percutaneous vertebroplasty device with precise control and accurate measurement of bone cement

A technology of vertebral body shaping and bone cement, which is applied in the field of medical devices and can solve problems such as poor compression effect and uncontrollable bone cement volume

Pending Publication Date: 2019-10-18
吕浩然
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the amount of bone cement injected by the traditional bone cement injection device is uncontrollable and the pressurization effect is not good, operators with rich experience are required to accurately grasp the inje...

Method used

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  • Percutaneous vertebroplasty device with precise control and accurate measurement of bone cement
  • Percutaneous vertebroplasty device with precise control and accurate measurement of bone cement
  • Percutaneous vertebroplasty device with precise control and accurate measurement of bone cement

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Such as Figure 2-4 As shown, this embodiment provides a push rod assembly for precise control and precise measurement of bone cement, including a sleeve rod 1 and a push rod 2 ; a hollow cavity 11 is provided at one end of the sleeve rod 1 . The hollow cavity 11 is provided with an elastic member 12 , the side wall of the hollow cavity 11 is provided with a scale line 14 , and the area covering the scale line 14 is provided with a transparent observation port 15 . The scale line 14 helps to better quantitatively count the amount of bone cement injected, and the transparent observation port 15 can more conveniently observe the relative position of the push rod 2 and the scale line 14, which is convenient for quantification. A sleeve handle 13 is provided at the top of the hollow cavity 11 , and a push rod handle 22 is provided at the top of the push rod 2 . The sleeve handle 13 and the push rod handle 22 facilitate the holding of the push rod 2 when the bone cement is ...

Embodiment 2

[0040] Such as Figure 5-7As shown, this embodiment provides a percutaneous vertebral body shaping device with precise control and precise metering of bone cement, including a syringe assembly, which includes a sleeve 3 and an empty sleeve 4; the bottom end of the sleeve 3 is provided with a connection A piece 34, the connecting piece 34 is detachably connected to the needle; in this embodiment, the connecting piece 34 is threadedly connected to the needle. The top of empty cylinder 4 is provided with the baffle plate that cooperates with limit plate 31 and limit groove 32; The bit components are connected in a detachable way to be suitable for the use of empty cylinders of various specifications. As a preferred solution of the present invention, the limiting assembly further includes a connecting cylinder 35 , and the connecting cylinder 35 is threadedly connected to the limiting plate 31 . The side wall of the sleeve 3 is provided with an observation opening 33 capable of ...

Embodiment 3

[0044] This embodiment is the third embodiment of the present invention, which is basically the same as Embodiment 2, except that it involves more specifically inserting the empty cylinder 4 into the sleeve 3, rotating the baffle 41 and snapping it into the limiting groove 32, Then, the connector 34 is threaded to the needle.

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Abstract

The invention discloses a percutaneous vertebroplasty device with precise control and accurate measurement of bone cement. The percutaneous vertebroplasty device comprises a push rod assembly and a syringe assembly. The push rod assembly comprises a sleeve rod and a push rod; the sleeve rod is provided with a cavity with an opening in one end, an elastic piece extends into the cavity to drive thesleeve rod to move, and the other end of the elastic piece abuts against the push rod. The syringe assembly comprises a sleeve and a hollow cylinder; the top of the sleeve is provided with a limitingplate, and the limiting plate is provided with limiting grooves for clamping the hollow cylinder; the push rod assembly is used for pushing liquid in the hollow cylinder. According to the percutaneousvertebroplasty device, the push rod assembly is adopted for replacing a traditional piston push rod; on one hand, one end of the sleeve rod is provided with a solid part which can adopt a metal material and has sufficient strength; on the other hand, the sleeve rod is connected with the push rod through the elastic piece, an operator can judge the amount of the injected bone cement according to the pressure of the push rod.

Description

technical field [0001] The invention relates to the field of medical devices, more specifically, to a precisely controlled injection push rod assembly and a percutaneous vertebral body shaping device. Background technique [0002] With the development of the economy, the aging of the population has become more and more obvious in the world. Osteoporosis affects the quality of life of the elderly population to varying degrees. At present, osteoporotic vertebral compression fractures in the elderly are one of the most common diseases in the field of spinal surgery. Vertebroplasty is a common surgical method for the treatment of osteoporotic vertebral compression fractures. The traditional vertebroplasty surgical instruments cannot accurately measure the bone cement perfused during the operation; Insufficient perfusion or leakage will affect the recovery of height and lead to various complications, and also affect the biomechanical stability of the entire spine. During the o...

Claims

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Application Information

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IPC IPC(8): A61B17/88A61B17/70
CPCA61B17/7094A61B17/8819A61B17/8825A61B17/8833
Inventor 吕浩然
Owner 吕浩然
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