According to the latest market report published by Persistence Market Research titled "Cervical Total Disc Replacement Device Market: Global Industry Analysis & Forecast: North America to Witness Highest Growth by 2021", the CTDR device market is expected to be valued at US$ 489.7 Mn by the end of 2015. It is anticipated to expand at a CAGR of 23.1% during the forecast period (2015 - 2021) to account for US$ 1,750.1 Mn by 2021.
Cervical total disc replacement (CTDR) device is used to treat patients suffering from degenerative disc disorders (DDD). Neck pain is the major cause for development of DDD in cervical region of the spine. Cervical disc replacement procedure is performed for treatment of DDD, where the degenerated disc is removed surgically and an artificial disc is implanted in the vertebra. This is a minimal incision surgery (MIS), which results in quick recovery post-surgery, short hospital stay and low revision surgery rate. Various benefits of this procedure is increasing adoption rate of this surgery over conventional spinal fusion surgery. Conventionally, DDD is treated through spinal fusion surgery, but due to high rate of revision surgery and increasing prevalence of adjacent segment disc degeneration post fusion surgery, doctors are considering cervical disc replacement over spinal fusion.
The CTDR device market is mainly driven by factors such as growing ageing population, low revision surgery rate of cervical disc replacement surgery, and increasing demand for advanced CTDR device. However, factors such as inadequate reimbursement policies and lack of clinical data are expected to hamper market growth. The CTDR device market is segmented on the basis of material type and end user. By region, North America dominated the market with over 45% market share and is expected to remain dominant throughout the forecast period. The CTDR device market in Asia and Latin America are expected to expand at a CAGRs of 23.8% and 18.5% respectively in terms of value during the forecast period.
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Cervical total disc replacement (CTDR) device is used to treat patients suffering from degenerative disc disorders (DDD). Neck pain is the major cause for development of DDD in cervical region of the spine. Cervical disc replacement procedure is performed for treatment of DDD, where the degenerated disc is removed surgically and an artificial disc is implanted in the vertebra. This is a minimal incision surgery (MIS), which results in quick recovery post-surgery, short hospital stay and low revision surgery rate. Various benefits of this procedure is increasing adoption rate of this surgery over conventional spinal fusion surgery. Conventionally, DDD is treated through spinal fusion surgery, but due to high rate of revision surgery and increasing prevalence of adjacent segment disc degeneration post fusion surgery, doctors are considering cervical disc replacement over spinal fusion.
The CTDR device market is mainly driven by factors such as growing ageing population, low revision surgery rate of cervical disc replacement surgery, and increasing demand for advanced CTDR device. However, factors such as inadequate reimbursement policies and lack of clinical data are expected to hamper market growth. The CTDR device market is segmented on the basis of material type and end user. By region, North America dominated the market with over 45% market share and is expected to remain dominant throughout the forecast period. The CTDR device market in Asia and Latin America are expected to expand at a CAGRs of 23.8% and 18.5% respectively in terms of value during the forecast period.
https://www.chbuttfusionweldingmachine.com/product/hydraulic-butt-fusion-welding-machines/
A wide range of CPAP machine
2019年8月20日If you are looking for the ideal sleep apnea products, then it is likely to avail the best services that are vital for usage. The reputable and leading suppliers offer essential products to help people in the treatment of sleep apnea and other sleep disorders.
A wide range of CPAP machines and supplies are available to treat sleep apnea and other sleep disorders.The high quality CPAP Machine Supplies include CPAP machines, bi-level machines, auto CPAP machines and oxygen systems. They are electromechanical devices for better airflow, at variable pressures to keep the airway open. It supplies a constant and steady air pressure, a mask or nose piece. The machines are set in a perfect way to assist patients, providing a medical device to let them breathe properly.The CPAP Mask Accessories are ideal for a personalized therapy and they have different styles including full face, nasal or nasal pillow. The mask fits directly to the user and it will provide greater comfort during the night. A good comfortable fit offers a better observance with the increased acceptance of CPAP therapy. The triangular mask with the silicon cushions are used to seal the airflow and prevent the air leakage. Keeping the CPAP mask clean is mandatory to perform properly. The CPAP machines have their own importance in the treatment and so Portable CPAP Machines are designed to bring precise constant pressure to the nasal airway. The machines are the smallest and compact and offer the most exclusive sleep apnea therapy.
The interface is designed in a suitable manner to adjust the pressure settings that can be changed instantly. You can buy these machines to enhance the comfort of your sleep apnea therapy. The machines use the rechargeable batteries sometimes and they are greatly suitable for carrying purposefully. There are various online sources such as CPAPMAN.com where you can buy the high-quality CPAP machines and masks at affordable prices. So, go online to purchase the finest quality CPAP supplies and CPAP equipment and treat your sleep disorders.
https://www.chbuttfusionweldingmachine.com/product/manual-machine/
A wide range of CPAP machines and supplies are available to treat sleep apnea and other sleep disorders.The high quality CPAP Machine Supplies include CPAP machines, bi-level machines, auto CPAP machines and oxygen systems. They are electromechanical devices for better airflow, at variable pressures to keep the airway open. It supplies a constant and steady air pressure, a mask or nose piece. The machines are set in a perfect way to assist patients, providing a medical device to let them breathe properly.The CPAP Mask Accessories are ideal for a personalized therapy and they have different styles including full face, nasal or nasal pillow. The mask fits directly to the user and it will provide greater comfort during the night. A good comfortable fit offers a better observance with the increased acceptance of CPAP therapy. The triangular mask with the silicon cushions are used to seal the airflow and prevent the air leakage. Keeping the CPAP mask clean is mandatory to perform properly. The CPAP machines have their own importance in the treatment and so Portable CPAP Machines are designed to bring precise constant pressure to the nasal airway. The machines are the smallest and compact and offer the most exclusive sleep apnea therapy.
The interface is designed in a suitable manner to adjust the pressure settings that can be changed instantly. You can buy these machines to enhance the comfort of your sleep apnea therapy. The machines use the rechargeable batteries sometimes and they are greatly suitable for carrying purposefully. There are various online sources such as CPAPMAN.com where you can buy the high-quality CPAP machines and masks at affordable prices. So, go online to purchase the finest quality CPAP supplies and CPAP equipment and treat your sleep disorders.
https://www.chbuttfusionweldingmachine.com/product/manual-machine/
In the production of erw carbon steel pipe, the shape of the joint of the tube directly affects the quality of the weld, in which the parallelity of the welded joint is particularly important. In the pipe joint welding process, mainly by adjusting the amount of roller on the roll and the gap between the two rollers to ensure the degree of parallel fit.
1. Features of the welding of the squeeze roller
The size of the squeeze roller on the extrusion extrusion frame is about 10% greater than that of the other squeeze rollers. Therefore, there is a gap between the outer roller surface of the upper squeeze roller and the ideal circular cross section of the steel pipe, Followed by the gap ". In the actual molding, the steel pipe section can not be the ideal circular. Under normal circumstances, due to the deformation of the edge of the strip is not sufficient, the section is easy to peach-shaped, if not adjusted will form a welded butt joint non-parallel docking, seriously affecting the quality of the weld. If the upper squeeze roller and the other Hydraulic butt fusion welding machines squeeze rollers use the same bar diameter, when the V-shaped joint is removed by adjusting the reduction amount of the upper squeeze roller, the outer roller surface of the upper squeeze roller will be strongly pressed against the steel pipe On the surface, easily lead to surface scratches, and the formation of a serious V-shaped joints. Therefore, the "heel gap" is set according to the actual characteristics of the tube forming, through the upper squeeze roller to adjust the amount of pressure to effectively eliminate the V-shaped joint phenomenon.
2. Adjustment method of upper squeeze rollerWhen the position of the squeeze roller is set according to the standard hole, if it is found that the molded joint is V-shaped, the reduction amount of the upper squeeze roller can be adjusted in the range of "heel gap". The limit of the amount of pressure on the upper squeeze roller is such that the outer roll surface of the upper squeeze roll causes a shallow indentation on the surface of the steel pipe. In accordance with experience, when the pressure to reach this limit, even if the higher strength of the pipe, usually can also be formed into a flat shape joint. In applying this experience, the gap between the two upper squeeze rollers must be set exactly in accordance with the design value. The change in this gap will directly cause "heel gap" changes. If the roll is not set to the design value for each time, the adjustment of the hole is difficult to achieve reproducibility.
3. Method of confirming the butt joint state of forming jointIt is the most accurate way to confirm the weld profile of the weld area. The method not only can determine the joint state, but also can determine the welding extrusion and welding output power is reasonable or not. In order to facilitate the observation of the streamline, the specimen shall be taken before the weld heat treatment. If the upper part of the weld metal line angle is basically symmetrical, it can be judged that the joints of the joints are parallel. The difference between the flow direction angles of the upper and lower symmetrical parts is usually limited to five degrees, and the "waist drum" shape of the heat affected zone should be substantially symmetrical. The easiest way to confirm the scene is to compare the shape and size of the inner and outer burrs after welding. If the seam is type I, the size and shape of the inner and outer burrs are basically the same. But this method can not be quantified, only as a general judgment.
https://www.chbuttfusionweldingmachine.com/about/company-profile.html
1. Features of the welding of the squeeze roller
The size of the squeeze roller on the extrusion extrusion frame is about 10% greater than that of the other squeeze rollers. Therefore, there is a gap between the outer roller surface of the upper squeeze roller and the ideal circular cross section of the steel pipe, Followed by the gap ". In the actual molding, the steel pipe section can not be the ideal circular. Under normal circumstances, due to the deformation of the edge of the strip is not sufficient, the section is easy to peach-shaped, if not adjusted will form a welded butt joint non-parallel docking, seriously affecting the quality of the weld. If the upper squeeze roller and the other Hydraulic butt fusion welding machines squeeze rollers use the same bar diameter, when the V-shaped joint is removed by adjusting the reduction amount of the upper squeeze roller, the outer roller surface of the upper squeeze roller will be strongly pressed against the steel pipe On the surface, easily lead to surface scratches, and the formation of a serious V-shaped joints. Therefore, the "heel gap" is set according to the actual characteristics of the tube forming, through the upper squeeze roller to adjust the amount of pressure to effectively eliminate the V-shaped joint phenomenon.
2. Adjustment method of upper squeeze rollerWhen the position of the squeeze roller is set according to the standard hole, if it is found that the molded joint is V-shaped, the reduction amount of the upper squeeze roller can be adjusted in the range of "heel gap". The limit of the amount of pressure on the upper squeeze roller is such that the outer roll surface of the upper squeeze roll causes a shallow indentation on the surface of the steel pipe. In accordance with experience, when the pressure to reach this limit, even if the higher strength of the pipe, usually can also be formed into a flat shape joint. In applying this experience, the gap between the two upper squeeze rollers must be set exactly in accordance with the design value. The change in this gap will directly cause "heel gap" changes. If the roll is not set to the design value for each time, the adjustment of the hole is difficult to achieve reproducibility.
3. Method of confirming the butt joint state of forming jointIt is the most accurate way to confirm the weld profile of the weld area. The method not only can determine the joint state, but also can determine the welding extrusion and welding output power is reasonable or not. In order to facilitate the observation of the streamline, the specimen shall be taken before the weld heat treatment. If the upper part of the weld metal line angle is basically symmetrical, it can be judged that the joints of the joints are parallel. The difference between the flow direction angles of the upper and lower symmetrical parts is usually limited to five degrees, and the "waist drum" shape of the heat affected zone should be substantially symmetrical. The easiest way to confirm the scene is to compare the shape and size of the inner and outer burrs after welding. If the seam is type I, the size and shape of the inner and outer burrs are basically the same. But this method can not be quantified, only as a general judgment.
https://www.chbuttfusionweldingmachine.com/about/company-profile.html
