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Visual internal lock type femoral nail

A technology of bone marrow and internal nailing, applied in the field of visual interlocking femoral intramedullary nailing, which can solve problems such as low tensile strength and yield strength, troublesome patients, and poor compatibility, etc., to achieve enhanced elastic modulus, fully Response, the effect of excellent mechanical properties

Inactive Publication Date: 2018-11-13
WENZHOU CENT HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The visual interlocking femoral intramedullary nail is a fixation device for femoral shaft fractures. It has the advantages of preventing fracture rotation deformity and reducing the fracture of built-in objects. Most common femoral intramedullary nails are made of metal, because they have Very good tensile strength and yield strength, but after implanting the femoral intramedullary nail made of metal into the human body, on the one hand, the compatibility with the human body is not good enough; During body detection, the detector may sound an alarm, causing unnecessary trouble to the patient
Plastic screws generally have good biocompatibility, but their tensile strength and yield strength are far lower than metal screws, which cannot meet actual needs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Embodiment 1: a visual interlocking femoral intramedullary nail, comprising the following materials in parts by weight:

[0049] 75 parts of polyamide resin;

[0050] 25 parts of polyacrylic resin;

[0051] 10 parts of tetraethylene glycol dimethacrylate;

[0052] 15 parts of dimethylaminoethyl methacrylate;

[0053] 5 parts of polyethylene glycol;

[0054] 5 parts of polylactic acid;

[0055] 4 parts of propylene glycol alginate;

[0056] 2 parts of zinc oxide;

[0057] 2 parts of magnesium oxide;

[0058] Chitosan 2 parts;

[0059] 2 parts plasticizer;

[0060] 2 parts of coupling agent;

[0061] 1 part filler;

[0062] 1 part of antibacterial agent;

[0063] 2 parts toughening agent;

[0064] 1 part antioxidant;

[0065] 1 part lubricant;

[0066] Accelerator 2 parts;

[0067] Described accelerant comprises following material composition in parts by weight:

[0068] 2 parts of titanium diisopropoxy diacetylacetonate;

[0069]1 part of bis(acetylaceto...

Embodiment 2

[0087] Embodiment 2: a visual interlocking femoral intramedullary nail, comprising the following materials in parts by weight:

[0088] 75 parts of polyamide resin;

[0089] 25 parts of polyacrylic resin;

[0090] 10 parts of tetraethylene glycol dimethacrylate;

[0091] 15 parts of dimethylaminoethyl methacrylate;

[0092] 5 parts of polyethylene glycol;

[0093] 5 parts of polylactic acid;

[0094] 4 parts of propylene glycol alginate;

[0095] 2 parts of zinc oxide;

[0096] 2 parts of magnesium oxide;

[0097] Chitosan 2 parts;

[0098] 2 parts plasticizer;

[0099] 2 parts of coupling agent;

[0100] 1 part filler;

[0101] 1 part of antibacterial agent;

[0102] 2 parts toughening agent;

[0103] 1 part antioxidant;

[0104] 1 part lubricant;

[0105] Accelerator 2 parts;

[0106] Described accelerant comprises following material composition in parts by weight:

[0107] 2 parts of titanium diisopropoxy diacetylacetonate;

[0108] 1 part of bis(acetylacet...

Embodiment 3

[0126] Embodiment 3: a visual interlocking femoral intramedullary nail, comprising the following materials in parts by weight:

[0127] 75 parts of polyamide resin;

[0128] 25 parts of polyacrylic resin;

[0129] 10 parts of tetraethylene glycol dimethacrylate;

[0130] 15 parts of dimethylaminoethyl methacrylate;

[0131] 5 parts of polyethylene glycol;

[0132] 5 parts of polylactic acid;

[0133] 4 parts of propylene glycol alginate;

[0134] 2 parts of zinc oxide;

[0135] 2 parts of magnesium oxide;

[0136] Chitosan 2 parts;

[0137] 2 parts plasticizer;

[0138] 2 parts of coupling agent;

[0139] 1 part filler;

[0140] 1 part of antibacterial agent;

[0141] 2 parts toughening agent;

[0142] 1 part antioxidant;

[0143] 1 part lubricant;

[0144] Accelerator 2 parts;

[0145] Described accelerant comprises following material composition in parts by weight:

[0146] 2 parts of titanium diisopropoxy diacetylacetonate;

[0147] 1 part of bis(acetylacet...

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PUM

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Abstract

The invention discloses a visual internal lock type femoral nail. Firstly, polyamide resin, polyacrylic resin, tetraethylene glycol dimethacrylate and dimethylaminoethyl methacrylate are preliminarilymixed, polyethylene glycol, polylactic acid, propylene glycol alginate, zinc oxide, magnesium oxide and chitosan are added, various additives, such as an accelerant, are added, uniform mixing is performed, then the materials are put into an extruder, extrusion granulation is performed, finally the materials are put into an injection molding machine, injection molding is performed, and the accelerant selects bis (pentane-2,4-dionato-O, O') bis (propan-2-olato) titanium, titanium acetylacetonate, bis (2,2,6,6-tetramethyl-3,5-heptanedionato) magnesium dihydrate, ethylenediaminetetraacetic acid disodiu, 4-[2-(2-methoxy-5-chlorobenzamido) ethyl] benzene sulfonamide, 2-acrylamido-2-methylpropane sulfonic acid and bis (1-butyl-3-methylcyclopentadienyl) zirconium dichloride. The formed femoral nail femoral nail has good biocompatibility, and meanwhile further has high tensile strength and yield strength.

Description

technical field [0001] The invention relates to a screw, in particular to a visual interlocking femoral intramedullary nail. Background technique [0002] Screws, a common fastener, are widely used in machinery, construction, medicine and other fields. Screws include slotted ordinary screws, ring screws and set screws, etc. Screws are generally made of metal or plastic . [0003] The visual interlocking femoral intramedullary nail is a fixation device for femoral shaft fractures. It has the advantages of preventing fracture rotation deformity and reducing the fracture of built-in objects. Most common femoral intramedullary nails are made of metal, because they have Very good tensile strength and yield strength, but after implanting the femoral intramedullary nail made of metal into the human body, on the one hand, the compatibility with the human body is not good enough; During body detection, the detector may sound an alarm, thereby causing unnecessary trouble to the pati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/00C08L71/02C08L67/04C08L5/04C08L5/08C08K13/02C08K5/42C08K5/17C08K5/10C08K3/22C08F291/12C08F291/06C08F220/34
CPCC08F265/00C08F283/04C08K2003/222C08K2003/2296C08L51/00C08L2203/02C08L2205/02C08L2205/035C08L71/02C08L67/04C08L5/04C08L5/08C08K13/02C08K5/0025C08K5/175C08K5/42C08K5/10C08K3/22C08F220/343
Inventor 陈芒芒楚宇鹏董启榕
Owner WENZHOU CENT HOSPITAL
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