166results about How to "Reduce complication rate" patented technology

The invention is a novel adaptive CT-compatible brachytherapy applicator with remotely-controlled radial and longitudinal motion radioactive source lumen shields that can be manipulated by the radiation oncologist to optimize the dose distribution to the target and normal tissue structures for brachytherapy procedures.

A method for locating a guide wire axis on a femoral neck comprises the steps of tracking a position and orientation of a femur; registering a frame of reference with respect to the position and orientation of the femur from a first registration probe mounted onto the femur in a predetermined configuration, the frame of reference having preoperative planned data pertaining to the femoral neck; digitizing femoral neck data with respect to the position and orientation of the femur from a second registration probe positioned onto the femoral neck at desired orientations; calculating a position and orientation of the guide wire axis with respect to the position and orientation of the femur as a function of the preoperative planned data and the femoral neck data.

The invention relates to a technical method for the reconstruction of a stable vertebral column after a vertebral column resection operation. The method comprises the following steps of performing CT (computed topography) and data acquisition on a personalized vertebral column, outputting CT data in a Dicom format, three-dimensionally calculating and establishing a 3D (three-dimensional) vertebral column model, outputting the 3D vertebral column model to a 3D printer in an STL (standard template library) format, and molding a cellular bionic vertebral column by using a titanium printing material with a melting point of 1,668+ / -4 DEG C, wherein the sizes of gaps in the cellular bionic vertebral column are 100 mu m. Compared with the prior art, the method has the advantages that a personalized column body prepared before the operation is directly used for replacing a symptomatic column during the operation, so that the operation time is greatly shortened, bleeding during the operation is reduced, and the incidence rate of various complications during the operation is lowered.

The invention is a novel adaptive CT-compatible brachytherapy applicator with remotely-controlled radial and longitudinal motion radioactive source lumen shields that can be manipulated by the radiation oncologist to optimize the dose distribution to the target and normal tissue structures for brachytherapy procedures.

The present disclosure provides methods, systems, techniques and apparatus related to an instrumentation used to classify tissue before and / or during removal. The tissue can include any hard tissue / soft tissue interface, such as a cataract within a lens. Before an operation, an ultrasound image can be provided that gives a full scan of the targeted region, e.g., a lens, and provide a hardness profile. The profile could include a two or three dimensional map of the tissue hardness, assisting a surgeon to choose a suitable surgical procedure and strategy. During the operation, hardness measurements can be carried out real-time, in a constant manner, while the surgeon is working. This data can allow the handpiece to automatically adjust to the surgical conditions including the tissue hardness, increasing surgical performance, decreasing surgical procedure time and reducing the rate of complications.

The invention relates to a bone filler conveying sleeve which comprises a conveying tube, a conveying tube handle and a sheath core. A flexible tube is arranged at a far end of the conveying tube, a rigid tube is arranged at a near end of the conveying tube, a near end of the flexible tube is fixedly connected with a far end of the rigid tube, a near end of the rigid tube is fixedly connected with the conveying tube handle, the sheath core is slidably inserted into the conveying tube, a near end of the sheath core is fixedly connected with an adjusting handle, and a far end of the sheath core is bent to form a fixed angle which is a fixed bent section of the sheath core. The far end of the conveying tube of the bone filler conveying sleeve is provided with the flexible tube, and the sheath core with the fixed angle formed at the far end is inserted into the conveying tube, so that the purpose of controlling the bending degree of the far end of the conveying tube can be achieved by controlling the relative positions of the fixed bent section of the sheath core and the flexible tube at the far end of the conveying tube, and the bone filler conveying sleeve is convenient to operate, simple in structure and low in cost.

A combination double-barreled and debranching stent graft and methods for its use, where the stent graft comprises, a main body stent graft defining a single lumen with distal and proximal ends, a first bifurcation in the main body defining first and second lumens, the main body stent graft defines a tubular wall that is contiguous with the first and second lumens such that any fluid entering the main body stent graft must exit by entering one of the first or second lumens, (c) a second bifurcation within the first lumen defining a first leg and a second leg, (d) a third bifurcation within the first leg defining a third leg and a fourth leg, and (e) a fourth bifurcation within the second leg between about 10 mm and about 20 mm distal from the second bifurcation defining a fifth leg and a sixth leg.

The invention relates to a method for implementing aortic stent in-vitro fenestration by virtue of a 3D printing model. The method comprises the following processing steps: acquiring CT or nuclear magnetism imaging data of aorta and branches of a patient, and processing the data into a data format which is recognizable for a 3D printer; transmitting the processed data to the 3D printer and printing the data by virtue of the printer; polishing an obtained mode; disinfecting the mold at normal temperature and keeping the disinfected mode on an operating table; placing an aortic stent graft in the mold, and making marks on the stent in accordance with positions and sizes of branched artery orifices; taking out the stent and conducting fenestration reforming in accordance with the marks; re-installing the reformed stent in a conveyor; and releasing the stent in vivo, and finally reconstructing branched arteries by virtue of a window. With the application of the method provided by the invention, the indication scope of an endovascular repair technology is widened, the efficiency and the accuracy of the aortic stent in vitro fenestration are enhanced, the occurrence rate of complications is reduced and operation safety is improved.

Exemplary apparatus and process can be provided for imaging information associated with at least one portion of a sample. For example, (i) first different wavelengths of at least one first electro-magnetic radiation can be provided within a first wavelength range provided on the portion of the sample so as to determine at least one first transverse location of the portion, and (ii) second different wavelengths of at least one second electro-magnetic radiation within a second wavelength range can be provided on the portion so as to determine at least one second transverse location of the portion. The first and second ranges can east partially overlap on the portion. Further, a relative phase between at least one third electro-magnetic radiation electro-magnetic radiation being returned from the sample and at least one fourth electro-magnetic radiation returned from a reference can be obtained to determine a relative depth location of the portion.

The invention discloses a double-saccule blood vessel inner conduct pipe wherein the pipe is provided with an opening on one end, and a securing sleeve on the other end, the outer wall of the pipe is covered by a first saccule and a second saccule spaced by a finite distance on the opening end of the pipe, the saccule tube connector is inserted into the inner cavity of the pipe through the securing sleeve and is in communication with the inner cavities of the two saccules. The pipe is provided with a blood output hole, which is provided with a blood transfusion tube.

The invention is a novel adaptive CT-friendly brachytherapy applicator with remotely-controlled radial and longitudinal motion radioactive source lumen shields that can be manipulated by the radiation oncologist to optimize the dose distribution to the target and normal tissue structures for brachytherapy procedures.

The invention provides a multi-tip extension type radiofrequency ablation electrode needle. The multi-tip extension type radiofrequency ablation electrode needle comprises a trocar, a handle part and a plurality of control slide blocks, wherein one end of the trocar is provided with a needle outlet; a plurality of electrode auxiliary needles are arranged in the trocar in a penetrating way, can respectively extend out of the needle outlet, and are outwards extended and bent; the electrode auxiliary needles are arranged in the trocar in the circumferential direction; the handle part is fixedly arranged at the other end of the trocar, a plurality of metal slide bars are arranged in the handle part and can slide, one end of each metal slide bar is connected with the corresponding electrode auxiliary needle, and the other end of each metal slide bar is connected with a radiofrequency treatment instrument; the control slide blocks are glidingly arranged on the circumferential wall of the handle part, and are connected with the metal slide bars. The multi-tip extension type radiofrequency ablation electrode needle has the advantages that the needle discharging number, direction and length can be controlled, the directional extension of the electrode auxiliary needles is realized, the electrode needle is suitable for thoroughly ablating tumors under large blood vessels or at the edges of organs, and the operation is simple and convenient.

The invention discloses a use method of a puncture guide device. The use method comprises the following steps: firstly, positioning a surgical part of a patient; and then scanning the surgical part of the patient with CT (computed tomography), and connecting a puncture point and a surgical target point in CT imaging to obtain a puncture path and a puncture depth; calculating a projection angle alpha of an included angle between the puncture path and a sagittal line on a coronal plane, and a projection angle beta of an included angle between the puncture path and a coronal line on a sagittal plane by a CT machine system; adjusting the laser lamp light beam direction and the puncture path direction of the puncture guide device to be conform according to the projection angle alpha and the projection angle beta; adjusting the puncture guide device, so that the laser lamp light beams point to the surgical puncture point; and ensuring that a puncture needle is straight and the tail end of a puncture needle is positioned on a laser lamp light beam line in the follow-up guide. The use method provided by the invention realizes the puncture surgery guide, and is accurate and reliable, and is simple and convenient to use.

A debranching stent graft limb and methods for its use, where the limb comprises, a main body stent graft limb with a bifurcation defining a first and second leg, the main body stent graft limb has a distal end and a proximal end, the main body stent graft limb has a diameter at the proximal end in the range from about 14-18 mm, the first leg has a diameter ranging from about 8-12 mm, the second leg has a diameter ranging from about 6-10 mm, and the distance from the proximal end of the main body to the distal end of the first leg and the second leg is in the range from about 70-90 mm, and the diameter of the first leg is about 2 mm greater than the diameter of the second leg.

The invention is a novel adaptive CT-friendly brachytherapy applicator with remotely-controlled radial and longitudinal motion radioactive source lumen shields that can be manipulated by the radiation oncologist to optimize the dose distribution to the target and normal tissue structures for brachytherapy procedures.

The invention discloses a retrobulbar drug injection device. The device comprises a syringe and a sheath, the syringe comprises a syringe cylinder, a piston push rod, a piston, a first protrusion portion, a first needle, and a first support plate, the sheath includes a sheath cylinder, a second protrusion portion, a second needle, and a second support plate, an inner wall at a far side of the sheath cylinder is provided with internal threads, and an outer wall at a far side of the syringe cylinder is provided with external threads; the end at a far side of the first needle is blunt, and the end at a far side of the second needle is pointed; the portion at the far end of the first needle is provided with one or more drug injection openings; and the bottom surface of the sheath cylinder is provided with one or more air holes. By using the retrobulbar drug injection device, the second needle and the first needle respectively perform the puncture function and the stripping function, and the drug injection openings of the first needle can be employed for drug injection so that the depth of the drug injection position, the drug injection amount, and the drug injection speed can be actively controlled.

The invention discloses a methoxyl flavonoids compound used as a drug for preventing and treating MS (metabolic syndrome) and the usage. As for high-risk MS groups or patients diagnosed with MS, an effective dose of methoxyl flavonoids or compound preparations containing the substances can be adopted for a prevention and / or treatment.

A device and a method for planning an endovascular procedure are proposed. A medical instrument, particularly a catheter, is introduced into a vessel and is guided to its place of application via the vessel. Vessel diameters and bend radiuses along a plotted vessel course are automatically determined from the volume data set of the medical imaging and compared with a maximum diameter and minimum bend radius of the medical instrument planned for use. Points or regions within the plotted vessel course which have too low a vessel diameter or bend radius are subsequently highlighted in color in an image display of the vascular tree or vessel course. The user immediately detects critical areas and can if necessary change his or her plan or resort to an instrument with different geometric data. The method and the device make planning the endovascular procedure possible even for inexperienced users.

The invention discloses a sewing-free stent artificial blood vessel and a super elastic woven fixing ring, and relates to the technical field of medical equipment. The problem that an existing artificial blood vessel has difficulty in anastomosis, and the anastomosis time is too long, so that blood leak and complications are caused is solved. The sewing-free stent artificial blood vessel comprisesa artificial blood vessel body formed by a line-making part artificial blood vessel and a non-line-making part artificial blood vessel which are connected in sequence, and a compressible elastic metal support is sewn on the non-line-making part artificial blood vessel; the line-making part artificial blood vessel is provided with a sewing-free connecting part which is formed by a soft circular pocket which is located on the outer side of the line-making part artificial blood vessel and is in coaxial and seamless connection with the line-making part artificial blood vessel and the super elastic woven fixing ring arranged between the soft circular pocket and the line-making part artificial blood vessel, and a height constraint device is arranged on the super elastic woven fixing ring in thedirection of elasticity; the super elastic woven fixing ring is of an up-down staggered grid structure and is formed by weaving super elastic nickel-titanium alloy wire.

A device for repairing and reshaping blood vessel is composed of a blood vessel flanging-butt connecting unit for two segments of blood vessel, a U-shaped closing clamp, for clamping the flanged edges of said two segments of blood vessel to be butt connected, a closing clamp releasing unit for releasing said U-shaped closing clamp to said flanged edges, and a pair of clamp detaching pliers for detaching the error clamp.

The invention relates to a drug composition. The drug composition consists of an effective treating amount of calcium antagonist (CCB), an angiotensin II receptor blocker (ARB), a thiazide diuretic, a folic acid compound and a pharmaceutically acceptable carrier, wherein the content of the CCB is 2-240 mg, the content of the ARB is 4-600 mg, the content of the thiazide diuretic is 0.625-25 mg, and the content of the folic acid compound is 0.4-0.4 mg. The drug composition has the advantages that the drug composition can effectively improve the treatment effect of reducing blood pressure of class-2 and class-3 hypertensive patients, strengthen the effect of protecting target organs of the patients and reduce the occurrence risk of cerebral apoplexy complications caused by high blood pressure. In addition, the drug composition can be conveniently taken by patients, the treatment compliance is greatly improved, and the medical costs can be also reduced.

Disclosed are devices, systems and / or methods for use in the surgical treatment of vertebrae and / or other bones, particularly implants and / or related devices comprising silicon nitride in some of all of the implant or device body, including portions, layers and / or surface coatings thereof, for use in spinal surgeries and / or other orthopedic procedures.

A visceral double-barreled main body stent graft and methods for its use, the stent graft comprises, a main body stent graft having distal and proximal ends, the main body stent graft's length ranges from about 100-120 mm and diameter at the proximal end ranges from about 30-45 mm, first and second lumens defined at the main body stent graft's distal end, the first lumen's diameter ranges from about 18-20 mm, the second lumen's diameter ranges from about 16-18 mm, the first and second lumens have about the same length from about 50-70 mm, the first lumen is secured to the second lumen along a shared length, and the main body stent graft defines a tubular wall that is contiguous with the first and second lumens such that any fluid entering the main body must exit through one of the first or second lumens.

A length adjustable and controllable esophageal balloon catheter for treating narrow or occlusive lumen of the esophagus is disclosed, and relates to the technical field of the medical apparatus. The length adjustable and controllable esophageal balloon catheter comprises a catheter body, a developing ring, at least two balloons, a balloon cavity, a balloon filling channel, a balloon filling opening, a guide wire channel and a guide wire channel filling opening. The balloon filling opening, the balloon filling channel and the balloons are same in quantity. The lengthy cylindrical or spindle-like balloons are same in diameter and arranged axially along the catheter body orderly. In the invention, the balloon at the tail end is filled first and adjacent balloons are filled orderly on this basis so as not to change the balloon catheter to directly prolong the integral length of the balloon on the basis that the balloon at the tail end is expanded to continuously and synchronously expand pathological changes; the length adjustable and controllable esophageal balloon catheter reduces, and even avoids moving and changing the balloon catheter repeatedly, lowers the medical cost, simplifies the operating steps, reduces the operating complexity and the complication occurrence, lessens X-ray exposure of medical personnel and patients and alleviates the pain of patients.

A BQ-HTJ-I-type frameless solid navigation directional operation system mainly applied to the medical field is a brain navigation directional operation system consisting of a navigation main system, a navigation tool and a puncture tracking system, and can complete various brain operations safely and quickly.

The invention discloses a traditional Chinese medicine composition for treating lung cancer. According to the traditional Chinese medicine composition, the living quality and survival rate can be improved. The raw material medicines consist of the following components: loquat kernel, lalang grass rhizome, exocarpium, apricot kernel, hickory, adenophora tetraphylla, radix glehniae, radix pseudostellariae, radix scrophulariae, radix ophiopogonis, semen litchi, rhizoma sparganii, curcuma zedoary, glossy privet fruit, fritillaria thun-bergli, astragalus, subprostrate sophora, pangolin, scutellaria baicalensis, cornu bubali, platycodon grandiflorum, rhizoma polygonati, pseudo-ginseng, lucid ganoderma, the root of bidentate achyranthes, selaginella doederleinii Hieron, asparagus, schisandra chinensis, oldenlandia diffusa and houttuynia cordata. The traditional Chinese medicine composition consists of multiple Chinese herbal medicines with an anti-cancer effect; compared with a general chemical medicine, the traditional Chinese medicine composition has the characteristic of small toxic or side effect, the anti-cancer effect is obvious, and the complication occurrence rate of the patient can be effectively reduced, so that the cure rate of the patient with lung cancer is improved.