Memory alloy tube for manufacturing expandable vertebral stent

A memory alloy and vertebral body technology, which is applied in the field of memory alloy tubes, can solve the problems of filling material filling difficulties, increasing the collapsed part of the front edge, narrow tail pipe of the bracket, etc.

Inactive Publication Date: 2016-11-23
刘小勇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For most young and middle-aged patients, the anterior edge of the vertebral body collapses, and it is necessary to increase the supporting strength of the anterior edge of the collapsed part, and to fill the bone material through the tail end. question
The bracket tail pipe developed by the pipe with parallel pipe wall is narrow, and the filling material is prone to filling difficulties, and even the actual operation is difficult to realize
However, there is a joint problem at the end of the support developed by the plate, which may cause leakage of material filling and non-cohesion in operation.

Method used

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  • Memory alloy tube for manufacturing expandable vertebral stent
  • Memory alloy tube for manufacturing expandable vertebral stent
  • Memory alloy tube for manufacturing expandable vertebral stent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1: refer to figure 1 As shown, a memory alloy tube for making an expandable vertebral body stent is integrally made of nickel-titanium temperature memory alloy. Inner lumen 2; the small holes 21 and large holes 22 at both ends of the tapered inner lumen 2 are respectively located on the circular end faces of the head end 11 and the tail end 12 of the cylindrical outer tube wall, and the tapered inner lumen 2 is cut , casting mold, 3D printing technology or grinding process, when designing and considering the supporting force of the stent, the perfusion channel at the tail end 12 and the microelastic function of the stent, the design of the entire stent can be adjusted through the inclination of the tapered inner lumen 2 At the same time, the stent made of the tapered inner lumen 2, in addition to the functions of the ordinary cylindrical inner lumen 3 stent to expand and reset, restore the geometric shape of the fractured vertebral body, and generate a cavity...

Embodiment 2

[0039] Embodiment 2: refer to figure 2 As shown, a memory alloy tube for making an expandable vertebral body stent is integrally made of nickel-titanium temperature memory alloy. The memory alloy tube includes a cylindrical outer wall tube 1 and a cylindrical outer wall tube 1 inside Inner lumen 3; the outlets at both ends of the cylindrical inner lumen 3 are respectively located on the circular end faces of the first end 11 and the tail end 12 of the cylindrical outer tube wall, and the cylindrical inner lumen 3 is cut, molded, and 3D printed technology or grinding process, refer to Figure 12 As shown, the memory alloy tube is shaped into a tubular shape in the state of ice water, implanted into the vertebral body, and can be reshaped under body temperature conditions. After reshaping and expanding, the memory alloy tube forms a certain volume space, and in Tension is generated in the vertebral body, and the fragmented, loose, and collapsed cancellous bone of the vertebral...

Embodiment 3

[0041] Embodiment 3: refer to image 3 As shown, a memory alloy tube for making an expandable vertebral body stent is integrally made of nickel-titanium temperature memory alloy. The memory alloy tube includes a cylindrical outer wall tube 1 and an inner tube arranged inside the cylindrical outer wall tube 1 Cavity; the outlets at both ends of the inner lumen are located on the circular end faces of the cylindrical outer tube wall head end 11 and tail end 12 respectively, and the inner lumen in the present embodiment 3 is composed of two cylindrical inner lumens 3 and the middle The tapered inner lumen 2 is formed by cutting, molding, 3D printing technology or grinding process, refer to Figure 12 As shown, the memory alloy tube is shaped into a tubular shape in the state of ice water, implanted into the vertebral body, and can be reshaped under body temperature conditions. After reshaping and expanding, the memory alloy tube forms a certain volume space, and in Tension is ge...

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Abstract

The invention discloses a memory alloy tube for making an expandable vertebral body stent, which is integrally made of nickel-titanium temperature memory alloy, and is characterized in that the memory alloy tube includes a cylindrical outer wall tube, and The inner lumen inside the tube; the outlets at both ends of the inner lumen are respectively located on the circular end faces of the first end and the tail end of the cylindrical outer tube wall; the inner lumen can be cut, molded, 3D printed or polished craft made. The advantage of the present invention is that the change of the internal structure of the bracket, the manufacture of brackets with different structural strengths and vertebral body structures, the rules of vertebral body fractures, and the connection between tail end material filling and injection of filling materials are solved at one time, and according to clinical conditions of patients of different ages The bone regeneration ability and mechanical strength of the vertebral body can be adjusted to obtain stents with different wall thicknesses.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to a memory alloy tube for making expandable vertebral body brackets. Background technique [0002] In the previous research, we designed a series of memory alloy vertebral body expandable brackets: nickel-titanium temperature memory alloy vertebral body compression fracture orthopedic resetter and device (ZL 200610024715.6), vertebral body expandable orthopedic resetter (ZL200820006206.5), Expandable vertebral body stent (ZL 201020106368.3), and expandable reduction stent implanted in spinal lesion vertebral body (ZL 200720067399.0). [0003] In the above-mentioned patent design, the design and related experiments were done on the support with tubes and plates. However, in practical applications, there are still problems requiring different designs of scaffolds under different bone quality conditions. For example, the bone regeneration ability of young adults is good, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/70A61B17/56A61M29/00
CPCA61B17/7061A61B17/7071A61B17/7094A61B2017/564A61M29/00
Inventor 刘小勇杨惠林罗宗平唐天驷
Owner 刘小勇
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