Titanium plate placed in the skull defect repair application
A skull defect lines are required to be greater than 3cm2 skull defect repair. Defects can be repaired using titanium casting a variety of materials, including autologous bone, allograft bone, bone cement, hydroxyapatite, titanium plates, etc.
. Ideal cranioplasty material should be: good histocompatibility, non-toxic, non-carcinogenic, is a poor conductor of electricity and heat, through X-rays, for CT, MRI, EEG and other tests is small, rugged
Durable, easy shaping and so on. Because high plexiglass brittle, broken again under external force may gradually be abandoned; bone cement due to expensive, making trouble, easily fixed, but also limits
Its application.
2 titanium plate as an ideal repair material has the following advantages: ① and tissue compatibility, non-toxic, non-aging, non-corrosive, light tissue reaction, which bore a large and dense, titanium sponge plant is conducive to liquid
Drainage and granulation tissue throughout the body of the growth of fixed titanium; ② titanium plate strength to meet the requirements, resisting ability and strong; ③ appropriate titanium plate thickness, and the skull is similar, sophisticated technology, easy-to-shaping;
④ surgery operation is safe, simple, directly on the edge of skull defects, with special tools, can be directly from titanium titanium screw hole drilled into the skull and a constant; ⑤ preoperative pasteurized side
It easy; ⑥ non-magnetic, for X-ray, CT, MRI had no significant effect.
3 However, in clinical applications, titanium plates exposed is a common complication, although restored, is still likely exposed again. To prevent the exposed titanium and other complications, such as infection
Head flap blood supply, the dura and brain tissue damage, we in clinical practice, to pay attention to the following matters, effectively avoid complications.
(1) Select the curved incision, flap blood supply Note: in the repair, the prosthesis is exposed causes include local tension is too high, poor blood supply to the flap. If you choose linear incision, defect disposition into
After the titanium plate, wound itself, there will be tension, if the tension is reduced to a minimum, the opportunity to put into the body exposed greatly increased. Select curved incision can reduce tension and promote healing
Together. Also note the direction of the flap blood supply. Arterial supply to the top of the scalp are distributed from the periphery, so the design must take into account the flap position of the pedicle, particularly for
Away from the original incision design, but also to pay attention to this issue because of the scalp defect is often scar tissue, the blood supply is poor, do not separate too shallow peel flap. If the lack of intraoperative findings
Loss of blood supply to the scalp area is bad, and must not barely stitched, so the tension is too large, there will be exposed implant, and then need to transfer the local head flap to cover the wound, conducive to wound healing .
(2) isolated from normal to abnormal tissue organization: If you select the original scar incision, the incision may be due to the deep surface is bulging brain tissue caused the damage, but local scar will affect injury
Mouth healing. Choose Titanium Welded Tubes away from the incision, the first can ensure good healing, but separated from the normal subgaleal lower to defect, but also to avoid damage to the dura and brain
Organization, a thorough understanding of the situation defects.
(3) application of tension-suture technique: To reduce the chance of implant exposed suture technique should be noted. Scalp whole layer of neurosurgery using suture method, you can enter
Line improvements, using layered plastic surgery suture, absorbable suture respectively subgaleal layer silk suture skin and skin, to reduce the tension to a minimum.
(4) the timing of surgery reasonable options: repair the skull is also the opportunity to choose, such as 3 to 6 months after the scalp scar has softened, traumatic brain injury patient's condition has stabilized, the general condition
Has improved, hernia disappear, titanium sheet metal intracranial pressure decreased, the site of a partial craniectomy scalp retraction, the wound is completely healed without infection, you can choose surgery. For children who histiocytes new generation of Chen
Xiewang Sheng tissue healing, cranial growth, restore the integrity of the cranial cavity as soon as possible, is conducive to the development of the cranial cavity, so the child can properly repair the skull of time in advance.
Aerospace titanium castings
2014年5月20日星期二
Aerospace titanium castings Breasts is regarded as the most notable female secondary
Breasts is regarded as the most notable female secondary sex characteristics . It is said that the habit of Oriental women bra Bra from Yang invention. Social progress , changing times ,Titanium alloy valve always had the habit of bra Oriental women have begun to wear sun dress , low-cut dress and other clothing , and some also use a variety of beautiful bra to beautify the shape of the breast .
In addition to the size of the female breast affected by hormones , but also by a variety of genetic factors , environmental factors, nutrition , weight , physical exercise. Some people in order to make up the breasts while taking hormone drugs , endocrine disorders will inevitably bring , the beauty of women must be careful to use. Breast is it has the potential to cause harm to breast tissue under the negative influence . It is understood that the U.S. Food and Drug Administration (FDA) prohibited such products to market. Some foreign countries have silicon breast augmentation capsules bags in vivo safety questioned .
Experts recommend physical exercise plus choose the ideal bra is the most appropriate. Bra has recently Titanium precision castings introduced a new foreign high-tech , with its bottom rim "shape memory alloy" in place of nickel-titanium alloy when heated to a certain temperature , i.e., a predetermined shape to reply , and it is more flexible than the existing rims even after washing distorted , just wore that tie with the temperature curve , the elastic than normal rims doubled in size, will not be deformed . With the popularization and application of titanium , I believe that soon the natural beauty of oriental women will benefit from them.
Jewelry made of titanium , titanium system bra will make wonderful woman in the world . Advantage of titanium is " titanium " Light : titanium, stainless steel accounts for about half of cobalt, chromium and other alloys , it is much lighter than gold 16.3 , in making earrings, necklaces and other jewelry when obvious advantages ;
"Titanium " has good corrosion resistance : it embodies the advantages of jewelry is non-corrosive , not color, can long maintain a good luster, and is not afraid of water ;
"Titanium " has good biocompatibility : good corrosion resistance characteristics of titanium and people make it after long-term exposure does not affect its nature , does not cause allergies. Now in the medical field has been widely used. Therefore, people who are allergic to metal can boldly wear titanium jewelry ;
"Titanium " Can coloring : titanium metal has a very interesting feature , titanium placed on certain current through the electrolyte , the surface will be based on the electrolytic oxide film , and the thickness of the oxide film may decide to change the color while and no external element. Now do the colors are gold , black, blue , brown , titanium casting factory flowers and other colors . This feature makes it more colorful jewelry design , more fashionable ;
High titanium hardness, not easy to deformation , unlike ordinary wear gold and silver jewelry and other period of time need to re- shaping.
Since the material properties of titanium and unique cultural connotation , she will become after the precious metals platinum, gold jewelry is another stylish and classic metal ! Recent years, the Western countries and Japan, South Korea , titanium jewelry industry is booming , and ascendant, titanium jewelry has become a fashion, classic , conservation , personality, health synonymous ! believe that in the near future , Xiuwaihuizhong , sunny temperament of women will add in the next Jin let panacea "Titanium " charm !
2014年5月12日星期一
Aerospace titanium castings From the viewpoint of heat transfer efficiency
Titanium tube heat transfer efficiency to beat rivals
From the viewpoint of heat transfer efficiency, we find that the titanium alloy pipes with other
tubing (e.g., copper-nickel alloy) Aerospace titanium castings match. High strength titanium and high impact resistance allowable
turbidity of seawater with high flow rates and titanium alloys have a high temperature corrosion
resistance, titanium-nickel alloy than copper heat exchanger 60 a weight reduction of 70%, the their
overall heat transfer efficiency is roughly the same.
Due to the longer life of the titanium tube structure to offset one-time investment, in terms of
economic efficiency is also something else. And because of the speed for the entire period in the life
of the tube can reduce downtime, titanium alloy pump thus also receive an additional character. With the growth and
expansion of the use of titanium production, the cost and availability of titanium improved. Titanium
also with 317L stainless steel, Monel alloy 400 and Hastelloy C-276 to compete. It is predicted that
in the middle with seawater cooled heat exchangers, finned whole rolled titanium tube will completely replace copper-based alloy tube.
From the viewpoint of heat transfer efficiency, we find that the titanium alloy pipes with other
tubing (e.g., copper-nickel alloy) Aerospace titanium castings match. High strength titanium and high impact resistance allowable
turbidity of seawater with high flow rates and titanium alloys have a high temperature corrosion
resistance, titanium-nickel alloy than copper heat exchanger 60 a weight reduction of 70%, the their
overall heat transfer efficiency is roughly the same.
Due to the longer life of the titanium tube structure to offset one-time investment, in terms of
economic efficiency is also something else. And because of the speed for the entire period in the life
of the tube can reduce downtime, titanium alloy pump thus also receive an additional character. With the growth and
expansion of the use of titanium production, the cost and availability of titanium improved. Titanium
also with 317L stainless steel, Monel alloy 400 and Hastelloy C-276 to compete. It is predicted that
in the middle with seawater cooled heat exchangers, finned whole rolled titanium tube will completely replace copper-based alloy tube.
订阅：
博文 (Atom)