Medical absorbable internal fixtion rivettechnical field:
The present invention relates to field of medical materials, specifically a kind of Medical absorbable internal fixtion rivet.
background technology:
Connection, osseous tissue at present clinically for fracturing generally to adopt with the connection of soft tissue follow closely, plate system implements, use rustless steel, absorbable material etc., be prepared into screw and be connected with blade plate.This technology due to safe and reliable in clinical practice for many years.But because the nail-plate majority using stainless steel material to prepare needs again to take out, cause new misery and financial burden to patient; Medical absorbable hold-down screw is used to solve the problem of again taking out screw, but, due to the reason of material and profile design, in the application, need boring, tapping, twist into the steps such as screw, these steps especially twist into screw time, owing to needing intricately woven together careful operation, seem in practical operation and bother very much, and be very easy to the fracture causing Absorbable rod hold-down screw, and bring corresponding trouble thus.
summary of the invention:
The object of the invention is, in order to overcome existing Medical absorbable hold-down screw troublesome poeration, to there is the defect of potential safety hazard, providing a kind of structure simple, easy and simple to handle, the Medical absorbable internal fixtion rivet of use safety.
The object of the invention is to be realized by following technical proposals:
Medical absorbable internal fixtion rivet of the present invention, is formed primarily of rivet nut 1 and nail tip 2, it is characterized in that rivet nut 1 is formed by connecting by multiple cylinder is straggly.
In such scheme, described rivet nut 1 is provided with ailhead 3.
In such scheme, the cylinder cross section of described rivet nut 1 is circle, ellipse, triangle, tetragon, pentagon, hexagon or arbitrary polygon.
In such scheme, the cylinder of described rivet nut 1 be solid or/and hollow body, the cross section of hollow parts is circle, ellipse, triangle, tetragon, pentagon hexagon or arbitrary polygon.
In such scheme, described Medical absorbable internal fixtion rivet material therefor is base material, or the intermingling material obtained by melt blending by base material and auxiliary material, and wherein, base material consumption is 50 ~ 100% by weight percentage, and auxiliary material use quantity is 0 ~ 50% by weight percentage; Base material is one or more in polylactic acid (PLA), PGA (PGA), polycaprolactone (PCL), poly-para-dioxane ketone (PDS), poly butyric (PHB), polyanhydride, glycolide-lactide copolymer (PLGA), lactide caprolactone copolymer, lactide-hydroxybutyric acid copolymer and lactide coglycolide-caprolactone copolymer; Auxiliary material is one or more in Polyethylene Glycol (PEG), poe, polyamino acid, polybutylcyanoacrylate, Pa Luoshamu, poly phosphazene, polyether ester, polyesteramide, poly(ether-urethane), poly phosphate, poly-hydroxyl alkanoic acid ester, polysaccharide (natural and modification class), collagen protein, cellulose, gelatin, chitosan, glucosan, fibroin albumen, hydroxyapatite (HA), tricalcium phosphate (TCP), calcium sulfate and solubility calcium aluminum.
Medical absorbable internal fixtion rivet of the present invention use procedure is as follows:
Punch on osseous tissue with orthopaedics drill bit, aperture is consistent with Absorbable rod rivet diameter.Inserted by Medical absorbable internal fixtion rivet and hole, to the degree of depth of expection, use sonotrode, contact rivet also opens supersonic switch maintenance certain hour.The interface of Medical absorbable internal fixtion rivet and bone is followed sonotrode and is vibrated, the boss in rivet nut and frictional heat between bone surface, thus makes the liquefaction of rivet surface and infiltrate in sutura, is combined by fracture site.Close supersonic switch, complete operation.
Medical absorbable internal fixtion rivet of the present invention and the maximum difference of traditional Absorbable rod inner fixing device are: rivet nut does not have helicitic texture, does not need boring, tapping, knob screw during use, and Clinical practice is convenient, not easy fracture.
Therefore, instant invention overcomes existing Medical absorbable hold-down screw troublesome poeration, there is the defect of potential safety hazard, the Medical absorbable internal fixtion rivet arrangement provided is simple, easy and simple to handle, use safety.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the embodiment of the present invention one.
Fig. 2 is the schematic diagram of the embodiment of the present invention two.
In accompanying drawing, the implication of each numeral is: 1: rivet nut; 2: nail tip; 3: ailhead.
detailed description of the invention:
Be described in further detail the present invention below in conjunction with embodiment, but the present invention is not limited only to described embodiment.
Embodiment one
The Medical absorbable internal fixtion rivet of this example as shown in Figure 1, is made up of rivet nut 1 and nail tip 2, and rivet nut 1 is formed by connecting by multiple cylinder is straggly.
Rivet nut 1 is solid, and cylinder cross section is circle, ellipse, triangle, tetragon, pentagon, hexagon or arbitrary polygon.
The Medical absorbable internal fixtion rivet diameter of this example 0.01 millimeter to 20 millimeters, length 1 millimeter to 50 millimeters.
The Medical absorbable internal fixtion rivet material therefor of this example is base material, and base material is polylactic acid (PLA), comprises Poly-L-lactic acid (PLLA), poly-dl-lactide (PDLLA).
Embodiment two
As shown in Figure 2, except being provided with ailhead 3, all the other are with embodiment one for the Medical absorbable internal fixtion rivet of this example.
Embodiment three
The Medical absorbable internal fixtion rivet of this example, the cylinder except rivet nut 1 is hollow body, and the cross section of hollow parts is that outside circle, ellipse, triangle, tetragon, pentagon hexagon or arbitrary polygon, all the other are with embodiment one.
Embodiment four
The Medical absorbable internal fixtion rivet of this example, the cylinder except rivet nut 1 first half is hollow body, and the cylinder of Lower Half is solid, and material therefor is base material, base material be PGA (PGA) outward, all the other are with embodiment three.
Embodiment five
The Medical absorbable internal fixtion rivet of this example, material therefor is base material, and base material is polycaprolactone (PCL), and all the other are with embodiment one.
Embodiment six
The Medical absorbable internal fixtion rivet of this example, material therefor is base material, and base material is poly-para-dioxane ketone (PDS), and all the other are with embodiment one.
Embodiment seven
The Medical absorbable internal fixtion rivet of this example, material therefor is base material, and base material is poly butyric (PHB), and all the other are with embodiment one.
Embodiment eight
The Medical absorbable internal fixtion rivet of this example, material therefor is base material, and base material is polyanhydride, and all the other are with embodiment one.
Embodiment nine
The Medical absorbable internal fixtion rivet of this example, material therefor is base material, and base material is glycolide-lactide copolymer (PLGA), and copolymer type includes but not limited to random copolymer, block copolymer, or star, multi-arm copolymer.All the other are with embodiment one.
Embodiment ten
The Medical absorbable internal fixtion rivet of this example, material therefor is base material, and base material is polylactic acid (PLA) and PGA (PGA), and respectively account for 50% by weight percentage, all the other are with embodiment one.
Embodiment 11
The Medical absorbable internal fixtion rivet of this example, material therefor is base material, and base material is polylactic acid (PLA) and glycolide-lactide copolymer (PLGA), and respectively account for 50% by weight percentage, all the other are with embodiment one.
Embodiment 12
The Medical absorbable internal fixtion rivet of this example, material therefor is base material, and base material is polylactic acid (PLA) and poly-para-dioxane ketone (PDS), and respectively account for 50% by weight percentage, all the other are with embodiment one.
Embodiment 13
The Medical absorbable internal fixtion rivet of this example, material therefor is base material, and base material is PGA (PGA) and poly butyric (PHB), and respectively account for 50% by weight percentage, all the other are with embodiment one.
Embodiment 14
The Medical absorbable internal fixtion rivet of this example, material therefor is the intermingling material that base material and auxiliary material are obtained by melt blending, and wherein, base material consumption is 50% by weight percentage, and auxiliary material use quantity is 50% by weight percentage; Base material is polylactic acid (PLA), and auxiliary material is Polyethylene Glycol (PEG), and all the other are with embodiment one.
Embodiment 15
The Medical absorbable internal fixtion rivet of this example, material therefor is the intermingling material that base material and auxiliary material are obtained by melt blending, and wherein, base material consumption is 50% by weight percentage, and auxiliary material use quantity is 50% by weight percentage; Base material is polylactic acid (PLA), and auxiliary material is poe, and all the other are with embodiment one.
Embodiment 16
The Medical absorbable internal fixtion rivet of this example, material therefor is the intermingling material that base material and auxiliary material are obtained by melt blending, and wherein, base material consumption is 50% by weight percentage, and auxiliary material use quantity is 50% by weight percentage; Base material is polylactic acid (PLA), and auxiliary material is polyamino acid, and all the other are with embodiment one.
Embodiment 17
The Medical absorbable internal fixtion rivet of this example, material therefor is the intermingling material that base material and auxiliary material are obtained by melt blending, and wherein, base material consumption is 75% by weight percentage, and auxiliary material use quantity is 25% by weight percentage; Base material is PGA (PGA), and auxiliary material is polybutylcyanoacrylate, and all the other are with embodiment one.
Embodiment 18
The Medical absorbable internal fixtion rivet of this example, material therefor is the intermingling material that base material and auxiliary material are obtained by melt blending, and wherein, base material consumption is 75% by weight percentage, and auxiliary material use quantity is 25% by weight percentage; Base material is polycaprolactone (PCL), and auxiliary material is polyether ester, and all the other are with embodiment one.
Embodiment 19
The Medical absorbable internal fixtion rivet of this example, material therefor is the intermingling material that base material and auxiliary material are obtained by melt blending, and wherein, base material consumption is 90% by weight percentage, and auxiliary material use quantity is 10% by weight percentage; Base material is polylactic acid (PLA), and auxiliary material is Pa Luoshamu, and all the other are with embodiment one.
Embodiment 20
The Medical absorbable internal fixtion rivet of this example, material therefor is the intermingling material that base material and auxiliary material are obtained by melt blending, and wherein, base material consumption is 90% by weight percentage, and auxiliary material use quantity is 10% by weight percentage; Base material is polylactic acid (PLA), and auxiliary material is poly phosphazene, and all the other are with embodiment one.
Embodiment 21
The Medical absorbable internal fixtion rivet of this example, material therefor is the intermingling material that base material and auxiliary material are obtained by melt blending, and wherein, base material consumption is 80% by weight percentage, and auxiliary material use quantity is 20% by weight percentage; Base material is glycolide-lactide copolymer (PLGA), and auxiliary material is polyesteramide and poly(ether-urethane), and the weight ratio of polyesteramide and poly(ether-urethane) is 1:1, and all the other are with embodiment one.
Embodiment 22
The Medical absorbable internal fixtion rivet of this example, material therefor is the intermingling material that base material and auxiliary material are obtained by melt blending, and wherein, base material consumption is 80% by weight percentage, and auxiliary material use quantity is 20% by weight percentage; Base material is polylactic acid (PLA) and poly butyric (PHB), and the weight ratio of polylactic acid (PLA) and poly butyric (PHB) is 4:1, and auxiliary material is polyether ester and poly-hydroxyl alkanoic acid ester, and the weight ratio of polyether ester and poly-hydroxyl alkanoic acid ester is 1:1, and all the other are with embodiment one.
Embodiment 23
The Medical absorbable internal fixtion rivet of this example, material therefor is the intermingling material that base material and auxiliary material are obtained by melt blending, and wherein, base material consumption is 80% by weight percentage, and auxiliary material use quantity is 20% by weight percentage; Base material is polylactic acid (PLA), and auxiliary material is poly phosphate, and all the other are with embodiment one.
Embodiment 24
The Medical absorbable internal fixtion rivet of this example, material therefor is the intermingling material that base material and auxiliary material are obtained by melt blending, and wherein, base material consumption is 80% by weight percentage, and auxiliary material use quantity is 20% by weight percentage; Base material is PGA (PGA), and auxiliary material is polysaccharide, and all the other are with embodiment one.
Embodiment 25
The Medical absorbable internal fixtion rivet of this example, material therefor is the intermingling material that base material and auxiliary material are obtained by melt blending, and wherein, base material consumption is 80% by weight percentage, and auxiliary material use quantity is 20% by weight percentage; Base material is polycaprolactone (PCL), and auxiliary material is collagen protein, and all the other are with embodiment one.
Embodiment 26
The Medical absorbable internal fixtion rivet of this example, material therefor is the intermingling material that base material and auxiliary material are obtained by melt blending, and wherein, base material consumption is 80% by weight percentage, and auxiliary material use quantity is 20% by weight percentage; Base material is polylactic acid (PLA), and auxiliary material is cellulose, and all the other are with embodiment one.
Embodiment 27
The Medical absorbable internal fixtion rivet of this example, material therefor is the intermingling material that base material and auxiliary material are obtained by melt blending, and wherein, base material consumption is 80% by weight percentage, and auxiliary material use quantity is 20% by weight percentage; Base material is polylactic acid (PLA), and auxiliary material is gelatin, and all the other are with embodiment one.
Embodiment 28
The Medical absorbable internal fixtion rivet of this example, material therefor is the intermingling material that base material and auxiliary material are obtained by melt blending, and wherein, base material consumption is 80% by weight percentage, and auxiliary material use quantity is 20% by weight percentage; Base material is polylactic acid (PLA), and auxiliary material is chitosan, and all the other are with embodiment one.
Embodiment 29
The Medical absorbable internal fixtion rivet of this example, material therefor is the intermingling material that base material and auxiliary material are obtained by melt blending, and wherein, base material consumption is 80% by weight percentage, and auxiliary material use quantity is 20% by weight percentage; Base material is polylactic acid (PLA), and auxiliary material is glucosan, and all the other are with embodiment one.
Embodiment 30
The Medical absorbable internal fixtion rivet of this example, material therefor is the intermingling material that base material and auxiliary material are obtained by melt blending, and wherein, base material consumption is 80% by weight percentage, and auxiliary material use quantity is 20% by weight percentage; Base material is polylactic acid (PLA), and auxiliary material is fibroin albumen, and all the other are with embodiment one.
Embodiment 31
The Medical absorbable internal fixtion rivet of this example, material therefor is the intermingling material that base material and auxiliary material are obtained by melt blending, and wherein, base material consumption is 80% by weight percentage, and auxiliary material use quantity is 20% by weight percentage; Base material is polylactic acid (PLA), and auxiliary material is hydroxyapatite (HA), and all the other are with embodiment one.
Embodiment 32
The Medical absorbable internal fixtion rivet of this example, material therefor is the intermingling material that base material and auxiliary material are obtained by melt blending, and wherein, base material consumption is 80% by weight percentage, and auxiliary material use quantity is 20% by weight percentage; Base material is polylactic acid (PLA), and auxiliary material is tricalcium phosphate (TCP), and all the other are with embodiment one.
Embodiment 33
The Medical absorbable internal fixtion rivet of this example, material therefor is the intermingling material that base material and auxiliary material are obtained by melt blending, and wherein, base material consumption is 80% by weight percentage, and auxiliary material use quantity is 20% by weight percentage; Base material is polylactic acid (PLA), and auxiliary material is calcium sulfate, and all the other are with embodiment one.
Embodiment 34
The Medical absorbable internal fixtion rivet of this example, material therefor is the intermingling material that base material and auxiliary material are obtained by melt blending, and wherein, base material consumption is 80% by weight percentage, and auxiliary material use quantity is 20% by weight percentage; Base material is polylactic acid (PLA), and auxiliary material is solubility calcium aluminum, and all the other are with embodiment one.
Embodiment 35
The Medical absorbable internal fixtion rivet of this example, material therefor is base material, and base material is lactide caprolactone copolymer, and copolymer type includes but not limited to random copolymer, block copolymer, or star, multi-arm copolymer.All the other are with embodiment two.
Embodiment 36
The Medical absorbable internal fixtion rivet of this example, material therefor is base material, and base material is lactide-hydroxybutyric acid copolymer, and copolymer type includes but not limited to random copolymer, block copolymer, or star, multi-arm copolymer.All the other are with embodiment two.
Embodiment 37
The Medical absorbable internal fixtion rivet of this example, material therefor is base material, and base material is lactide coglycolide-caprolactone copolymer, and copolymer type includes but not limited to random copolymer, block copolymer, or star, multi-arm copolymer.All the other are with embodiment two.