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Vertebroplasty device having a flexible plunger

A flexible, piston-based technology, used in surgery, medical science, puncture needles, etc.

Inactive Publication Date: 2006-11-08
DEPUY SPINE SARL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because delivery of cement using a simple syringe requires the clinician's hand to be within the fluoroscopy field, delivering cement directly under fluoroscopy may result in the clinician being exposed to considerable fluoroscopy-induced pain within the fluoroscopy field. Under strong X-rays

Method used

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  • Vertebroplasty device having a flexible plunger
  • Vertebroplasty device having a flexible plunger

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Embodiment Construction

[0025] now refer to figure 1 and figure 2 , provides a device 1 for injecting bone cement, comprising:

[0026] a) a flexible delivery tube 11 having a proximal end 13, a distal end 15 and an inner surface 17 defining a hole 19;

[0027] b) a flexible piston 21 having a distal portion 23 and a proximal portion 25 sized to be slidably received in the bore,

[0028] c) A pushing device 31 for pushing the plunger distally is located adjacent the proximal end of the flexible delivery tube.

[0029] As mentioned above, the delivery tube is made flexible to allow it to be made of sufficient length to allow the surgeon to stay out of the fluoroscopy field and keep any Torque due to off-axis movement of the tube is minimized. Preferably, its inner surfaces are sterilized to minimize infection.

[0030] Preferably, the tube is made of a non-compliant material that will reduce the amount of cement that seeps from the tube into the patient following actuation of the piston. A pref...

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PUM

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Abstract

A device for injecting bone cement is provided. The device has a flexible delivery tube (11) and a flexible plunger (21).

Description

Background technique [0001] In vertebroplasty, surgeons seek a way to treat vertebral compression fractures by injecting a bone cement such as PMMA into the fractured area. In an AJNR: Clinical Report by Jensen et al., Nov. 18, 1997, Jensen described mixing two PMMA precursor components in a dish to make a viscous bone cement; this bone cement was filled into a 10ml syringe, The cement is injected from the larger syringe into multiple smaller 1 ml syringes, and the viscous bone cement is finally delivered through the needle attached to the smaller syringe into the desired area of ​​the vertebral body. [0002] To ensure that the injected cement does not move too far from its intended location, clinicians often monitor the location of the injected bone cement using fluoroscopy. However, because delivery of cement using a simple syringe requires the clinician's hand to be within the fluoroscopy field, delivering cement directly under fluoroscopy may result in the clinician bein...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/56A61B17/88
CPCA61B17/8816A61B17/8822A61B17/88A61B17/34
Inventor J·韦尔米克
Owner DEPUY SPINE SARL
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