54results about How to "Reduce the chance of complications" patented technology

The invention discloses a 4D-printing shape-memory-polymer-composite-material tracheal stent and a preparing method thereof, and belongs to the technical field of 4D printing. As for the problem thata traditional tracheal stent is difficult to implant, and the secondary stricture problem caused by the overlarge hole diameter of the tracheal stent, and the problem that as the hole diameter of thetracheal stent is over small, swinging of airway cilia is blocked, a compound of a shape memory polymer and nanometer iron oxide serves as a material, a curve-edge rectangle serves as a basic unit, and a tracheal-stent three dimensional structure model is designed; the tracheal-stent three dimensional structure is printed and formed with the fused deposition or direct writing printing method, is subjected to electrostatic spinning medicine carrying covering, and then is subjected to in-vitro remote excitation so that the shape of the stent is recovered, and a formed tracheal stent is obtained.The 4D-printing shape-memory-polymer-composite-material tracheal stent and the preparing method thereof are suitable for production of the tracheal stent.

The invention provides a BED (biological effective dose)-based prediction method for complications caused by tumor radiotherapy. The method comprises the following steps of improving the conventional NTCP (normal tissue complication probability) model by using the concept of a BED, and performing fractionated dose correction on the model by introducing an alpha/beta factor; reviewing and analyzing dose-volume parameters of irradiation to a certain organ after a group of patients receive radiotherapy and follow-up results, which are obtained by clinical observation after the radiotherapy, about the occurrence of the complications on the organ, and performing synchronous fitting on model parameters and the alpha/beta factor by utilizing the improved NTCP model; and substituting the NTCP model parameters and the alpha/beta factor, which are obtained by fitting, and the dose-volume information of the organs of a group of patients to receive the radiotherapy into the improved NTCP model, and calculating a probability value of occurrence of the complications on the organs of the patients in the group. Therefore, the probability of occurrence of the complications on the organ after the tumor patients in the group receive different fractionated doses of irradiation is predicted.

The invention discloses a method for manufacturing an operation auxiliary skeleton model. The method comprises the following steps that (1) according to the CT technology, skeleton three-dimensional reconstruction is carried out; (2), three-dimensional reconstruction data are made into three-dimensional printing data; (3), the skeleton model at the ratio of 1:1 is manufactured according to the 3D printing technology; (4), cleaning and completing are carried out on the printed model. The method for manufacturing the operation auxiliary skeleton model has the advantages that the operation auxiliary skeleton model is made of non-toxic polylactic acid material, and therefore the operation auxiliary skeleton model is environmentally friendly; the operation time is shortened, the bleeding amount of a patient is reduced, and the probability of complications is reduced; the visibility is higher, direct simulation of treatment can be conducted, an operation plan can be discussed, and operation risks are more controllable; more powerful assistance is provided for post-operation analysis and medical appraisal; restoration analysis of the skeleton is achieved by medical colleges, diversified cases are provided, and theories and reality are combined; a great number of potential clients exist in the aspect of the application of the method, and the market application prospect is broad.

The invention provides an extra-cavity anastomotic method. The extra-cavity anastomotic method includes enabling two broken ends of a hollow organ to be anastomotic to penetrate from intermediate through holes from a nail bin and a base relatively and reversely overturning outwards to expose the anastomotic positions of the two broken ends, sewing the anastomotic positions of the two broken ends by sewing nails and excising the residual ectropion part of the hollow organ by a rotary cutter. The invention further provides an ectropion type extra-cavity anastomat. An outer casing is a three-way pipe, a nail bin is fixed in a nail bin connecting pipe, the base and the nail bin are coaxially and relatively arranged, and the axes of the nail bin and the base are parallel to the axis of a base connecting pipe; the nail bin and the base are annular, a ring cutter is mounted in the nail bin and embedded in the end face of the nail bin and can axially move in the nail bin, and the end face of the base is provided with a ring slot matched with the ring cutter. The nail bin and the base are not coaxial with the outer casing, the two broken ends of the hollow organ to be anastomotic conveniently penetrate the intermediate through holes of the nail bin and the base, and extra-cavity anastomosis is realized.

The invention discloses an intraoperative stand false body and a conveying device. The intraoperative stand false body comprises a main body part an a branch part, wherein the main body part comprises an artificial blood vessel false body main body and a self-expanding bracket main body; the branch part comprises an artificial blood vessel false body branch and a self-expanding bracket branch; the self-expanding bracket main body and the self-expanding bracket branch comprise a plurality of self-expanding rings respectively; and the artificial blood vessel false body main body and the artificial blood vessel false body branch are fixed with the self-expanding bracket main body and the self-expanding bracket branch through stitching threads respectively. By adopting the intraoperative stand false body and the conveying device provided by the invention, during an operation, all branch blood vessels are not required to be removed and sewn, thereby shortening the operation time, relieving patients' pain, reducing the probability of complicating diseases caused by the removal of normal non-pathological blood vessels.

The invention relates to a 3D printing-based method for making a preoperative bone model of hip joint deformity, which uses the force line standard of the human body to collect digital imaging data of the hip joint, processes the digital imaging data, and then inputs the digital imaging data into computer-aided design software for bone layering and positioning, carry out 1:1 operation design on the digital three-dimensional model and human skeleton, and use CAD to remove the deformed bone according to the deformity state of the hip joint, so that the formed upper and lower osteotomies can be matched up and down; the generated three segments The imaging data of the osteotomy is input into the Materialize 3D modeling software to simulate the human skeleton and then 3D print out the three-segment osteotomy model. The osteotomy simulation operation in vitro can realize the plasticity of the prosthesis to be implanted in advance, and truly achieve personalized surgery and customized prosthesis design and production.

The invention provides a double-bundle artificial ligament and a manufacturing method, an implanting device and an implanting method thereof. The double-bundle artificial ligament comprises a flexible long-strip-shaped body. The long-strip-shaped body comprises a first body segment, a second body segment and a third body segment. The manufacturing method includes the steps that a lateral plate is woven; the lateral plate is cut, and a fold line is set; a first pull wire and a second pull wire are threaded from one side of the fold line to the other side of the fold line; corners are cut; the lateral plate is wound to the fold line from the two sides to form a cylinder; the first pull wire and the second pull wire are tensioned; a wire is wound around the two ends of the long-strip-shaped body. The implanting device comprises a hanging assembly and a fixing assembly. The implanting method includes the steps that the third body segment is arranged on the hanging assembly in a penetrating mode; the hanging assembly is fixed; the first body segment and the second body segment are fixed. According to the double-bundle artificial ligament and the manufacturing method, the implanting device and the implanting method thereof, the problems that knee joint stability can not be recovered, and donor site insufficiency, donor site complications, allograft ligament formation time delay and immunological rejection occur in reconstruction of an anterior cruciate ligament are solved, the reconstruction effect is greatly improved, and the adaptability is high.

The invention discloses a microwave ablation device, which comprises a hollow sheathing canal, a water blocking structure, a microwave generating structure and a connector assembly, wherein the water blocking structure is movably sealed and blocked in the hollow sheathing canal; the microwave generating structure is inserted and arranged on the water blocking structure, and comprises a coaxial cable and a microwave antenna head arranged at the end part of the coaxial cable; the connector assembly is sealed and plugged at the end part of the hollow sheathing canal; a cooling water inlet pipe and a cooling water return pipe for communicating the hollow sheathing canal are respectively connected onto the connector assembly. The hollow sheathing canal which is matched with a puncture needle and a biopsy needle to be used is directly used as an outer sheathing canal for microwave ablation; the original microwave generation structure arranged inside the microwave needle is glidingly arranged in the hollow microwave ablation through the water blocking structure; the space inside the hollow sheathing canal can be more effectively utilized; the requirement on the diameter of the hollow sheathing canal during the microwave ablation can be reduced; the complication causing probability is reduced.

The invention relates to a 3D printing technique-based preoperative knee joint deformed bone model production method. According to the method, based on alignment standards of the human body, knee joint digital imaging data are acquired; the digital imaging data are processed and then are inputted into computer aided design software for performing bone stratification and positioning; 1:1 operation design is performed on a digital 3D model and the bones of the human body; deformed bone removal is carried out through using the CAD according to a knee joint deformity state; a formed upper cut bone and lower cut bone are matched with each other along a longitudinal direction so as to be combined together; the imaging data of three generated cut bones are inputted into Materialise 3D modeling software for simulating the bones of the human body; three cut bone models are printed out through 3D printing; the three cut bone models are matched and combined with one another, so that a preoperative knee joint deformed bone model can be formed; and based on the bone model, bone cutting simulation operation is carried out in vitro, pre-shaping of a prosthesis to be implanted into a patient can be realized, personalized surgeries, customized prosthesis design and production can be realized authentically.

The invention provides full deer gelatin for treating osteoporosis and a preparation method of the full deer gelatin. The full deer gelatin comprises the following components in parts by mass: 100-500g of deer horns, 300-600g of cornu cervi pantotrichum, 400-600g of deerskin, 100-500g of deer's sinew, 100-500g of deer bone, 200-600g of deer tails, 40-110g of deer blood, 50-70g of deer whip, 20-80gof deer hearts, 30-60g of deer kidneys, 40-90g of deer livers, 40-50g of deer lungs, 20-50g of deer intestines, 5-15g of codonopsis pilosula, 5-15g of cistanche deserticola, 6-10g of lucid ganodermaand 5-10g of astragalus membranaceus. The preparation method comprises the following steps: preparing raw materials; putting the raw materials into water, timing after the water is boiled, boiling for4-6 hours, and filtering solids and residues so as to obtain an extract I; putting the solids and the residues into water, timing after the water is boiled, boiling for 2-3 hours, and filtering so asto obtain an extract II; filtering the extracts in sequence, cooling, and concentrating, thereby obtaining a finished product, namely the full deer gelatin. By adopting the full deer gelatin for treating osteoporosis, the defects that a conventional western medicine for treating osteoporosis is high in price and liable to cause complications can be solved.

The RF tumor treating equipment as one kind of tumor treating medical equipment includes one RF source comprising one controller, one data processor, one RF power amplifier and one display; and treating electrodes connected to the RF power amplifier. The controller has output connected through control line to the input of the RF power amplifier, and control end connected through control lines to the inputs of display and the data processor. The RF power amplifier has output connected to the data processor and the treating electrodes, and the data processor is connected through data lines to the controller and the display bidirectionally. The present invention has excellent treating effect.

The invention discloses a biological acetabulum part reconstruction prosthesis for treating hip joint dysplasia. The biological acetabulum part reconstruction prosthesis comprises a specific base andan articular surface coating; the upper end of the specific base is sharp and small, the lower end of the specific base is thick and big, and the specific base comprises an acetabulum contact surface,a soft tissue contact surface and a femoral head joint junction surface; the acetabulum contact surface and the soft tissue contact surface define the side surface of the specific base, and the femoral head joint junction surface forms the bottom surface of the specific base; and the specific base is of a three-dimensional porous net structure. According to the biological acetabulum part reconstruction prosthesis for treating hip joint dysplasia, the biomechanical environment of the hip joint of a patient is improved, the progress of hip joint inflammation is delayed, and the defects that anexisting periacetabular osteotomy is large in operative wound, poor in morphological combination and the like are overcome; and meanwhile, the biological acetabulum part reconstruction prosthesis is suitable for early treatment of hip joint dysplasia sequelae, joint replacement is delayed or avoided, and the biological acetabulum part reconstruction prosthesis has a remarkable effect on treatmentof mild hip joint dysplasia patients.

The invention relates to the technical field of medical instruments, in particular to a femoral neck fracture reduction pressurizer. The femoral neck fracture reduction pressurizer comprises a reduction screw tap, a pressurizing sleeve and a pressurizing nut, the reduction screw tap is sleeved with the pressurizing sleeve and the pressurizing nut, self-tapping threads are arranged at a head of thereduction screw tap, guiding external threads are machined at a position, close to a tail end, of the reduction screw tap, the pressurizing sleeve is arranged between the self-tapping thread and theguide external thread of a reset screw tap in a sleeved mode, the pressurizing nut is matched with the guide external thread in a threaded mode, and an end face of the pressurizing sleeve abuts against an end face of the pressurizing nut. The femoral neck fracture reduction device can shorten healing time of a patient after a femoral neck fracture reduction operation and reduce probability of complications.

The invention discloses an auxiliary circumcising device for penis root circumcision. A front pressing sheet, a back pressing sheet, a guide nail sheet and a thrusting assembly adopt semi-ring structures; the clamping ends of two clamping arms of pressurizing pilers sequentially pass through the thrusting assembly, the guide nail sheet and the back pressing sheet to be in threaded connection withthe front pressing sheet; the two clamping arms are connected with a guide rod assembly; the guide rod assembly comprises an outer pipe and a push rod which is movably arranged in the outer pipe; sliding grooves are symmetrically formed in the two sides of the outer pipe; the two sides of a push rod is hinged with the inner sides of the two clamping arms through movable assemblies correspondingly;each movable assembly comprises a connecting rod and a mounting sheet; one end of the mounting sheet is hinged with one end of the connecting rod, and the other end of the mounting sheet passes through the sliding grooves to be welded with the push rod; and a spring assembly is in sleeving connection with the push rod. The auxiliary circumcising device for penis root circumcision can overcome thedefects of the traditional penis root circumcision, can reduce the operation difficulty of the penis root circumcision and can realize the idealization effects of minimum scar and minimum influence on the penis function by a surgeon in the penile circumcision so as to finally fulfill the aims of accurately cutting and improving the treatment quality.

The invention discloses a perfused distal-end artificial blood vessel with a stent and an artificial blood vessel for a descending part of arcus aortae. The perfused distal-end artificial blood vessel with the stent comprises a flexible artificial blood vessel body, a self-expansion metal stent and a first perfusion branch. The self-expansion metal stent is fixed inwardly away from one section of a heart of the flexible artificial blood vessel body. One section, close to the heart, of the flexible artificial blood vessel body does not have the self-expansion metal stent. The first perfusion branch is used for connection and perfusion of extracorporeal circulation and formed in such a manner that the flexible artificial blood vessel body draws close to one section of the heart. The perfused distal-end artificial blood vessel with the stent and the artificial blood vessel for the descending part of arcus aortae have the following beneficial effects: when an aortic arch part coincides to a descending part on the condition of minor hypothermia during aortic dissection, circulatory arrest time is reduced to 1 to 2 min during an operation so that operation risk is greatly reduced; the complication probability caused by an operation is reduced; and detention time and recovery time of ICU for a patient are reduced.

The invention discloses a health-preserving tea of ​​dendrobium candidum. It is made of the following raw materials in parts by weight: 5-20 parts of Dendrobium candidum, 5-10 parts of black tea leaves, 1-5 parts of yacon fruit, 1-5 parts of Anemarrhena anemarrhena, 1-5 parts of bellflower, 1-5 parts of Sophora flavescens, 1-3 parts of okra, 0.5-2 parts of evening primrose, 0.1-0.5 parts of fresh mint, 0.01-1 part of multivitamins and 0.01-0.05 parts of complex protein powder. The invention also provides a preparation method of the Dendrobium candidum health tea, which includes the steps of drying, pulverizing, mixing, sterilizing, drying and packing. The present invention uses the by-product dendrobium leaves produced by Dendrobium candidum as the main raw material, rationally utilizes resources, and adds compound vitamins and compound protein powder to each component in addition to common Chinese herbal medicines, which is safe and reliable, and has the functions of invigorating qi, nourishing liver and kidney, and strengthening muscles and bones. And improve the function of human immunity, but also have the effect of relieving alcohol, protecting the liver and lowering the three highs.

The invention relates to a left ventricular assist device implantation method based on blood flow distribution optimization. The method comprises the steps that the heart output quantity of a patient is calculated; physiological parameters of the heart of the patient are obtained by reconstructing aorta and coronary vessels; calculating the blood flow velocity of the normal crowd by using the blood flow volume and resistance of the normal crowd; simulating installation of a left ventricular auxiliary device, importing physiological parameters of the heart of the patient, and calculating the blood flow velocity of the patient; and obtaining an optimal parameter value according to the error function. According to the method, after the optimal parameter values are obtained, implantation and use of the left ventricular assist device can be guided, and it is guaranteed that when the left ventricular assist device is actually implanted, parameters such as the included angle between the artificial blood vessel and the ascending aorta, the diameter of the artificial blood vessel and the motor rotating speed of the left ventricular assist device are optimal parameters; therefore, the blood supply condition of each blood vessel after the left ventricular auxiliary device is implanted is optimized, vortex formation is reduced, thrombus formation is reduced, and the probability of formation of complications such as pulmonary embolism and cerebral infarction is reduced.