225results about How to "Reduce postoperative complications" patented technology

The invention relates to a method for manufacturing a navigation template for knee replacement. The method comprises the following steps of: scanning a hip joint, a knee joint and an ankle joint through computed tomography (CT) to obtain CT data, and establishing three-dimensional reconstruction models of femur and tibia according to the CT data; respectively carrying out combination on the three-dimensional reconstruction models of thigh bone and shin bone with a three-dimensional structure, and respectively removing the three-dimensional structure models of femur and tibia from the three-dimensional structure; according to the knee replacement process, carrying out distal femoral virtual osteotomy on the three-dimensional structure model containing the femur contour, and carrying out proximal tibia virtual osteotomy on the three-dimensional structure model containing the tibia contour; and establishing virtual femur condyle navigation template and a virtual tibia platform navigation template, and manufacturing an entity condyle navigation template and an entity tibia platform navigation template. The individual navigation template manufactured by the invention be used for carrying out positioning of osteotomy and a rotating axis on the affected knee femur condyle and tibia platform, thus realizing individual precise osteotomy.

The invention discloses a skeleton operation guide plate manufacturing method based on 3D printing and belongs to the medical technical field. The method includes the steps that human body CT scanning Dicom data are acquired, and according to the difference of human body tissue optical density values, by the utilization of open type medical imaging software mimics, skeleton data are acquired, a human body skeleton virtual operation is finished, and an individual operation guide plate is manufactured in the needed position; an STL format is output to a 3D printer for printing, a printing mode for using a polylactic acid (PLA) material for melting fibers and adding materials is used, and a guide plate model is acquired and used for assisting a clinical skeleton operation. By the adoption of the method, clinical radioactive data can be rapidly, conveniently and publically shared, the individual skeleton or hard tissue model is established, the individual operation guide plate is manufactured, operation accuracy is improved, and operation time is saved.

The invention relates to a percutaneous aortic valve replacement surgery conveying device with valve positioning function, which is characterized by comprising a conveying rod (1), a sheath pipe (5), a circular ring (3), positioning rods (2) and circular ring control cables (4), wherein the circular ring (3) is sheathed on the lower end of the percutaneous aortic valve replacement surgery conveying rod (1) and located in the conveying sheath pipe (5); the quantity of the positioning rods (2) is at least two, and one end of each positioning rod (2) is hinged with the conveying rod (1); and the quantity of the circular ring control cables (4) is at least two, the lower end of each circular ring control cable (4) is provided with a structure for supporting the circular ring (3), and the upper end of each circular ring control cable (4) stretches out of the human body along the axial direction of the conveying rod (1). The conveying device can play good auxiliary function on positioning the transplanted valve, increase the success rate of percutaneous aortic valve replacement surgery and reduce surgery difficulty and postoperative complications; the conveying device can also reduce surgery pain and risk for patients and decreases medical expenses.

The invention discloses a prone-operative-position mattress. The prone-operative-position mattress comprises a prone-position mattress body, a head cushion, a trunk cushion and lower-limb cushions. The head cushion is arranged on the prone-position mattress body, the prone-position mattress body and the lower-limb cushions are connected with the trunk cushion, lower-limb grooves are formed at joints of the trunk cushion and the lower-limb cushions respectively, and the whole prone-operative-position mattress is of a vertical centrosymmetric structure. By the prone-operative-position mattress, patients can keep their operative positions unchanged for a long time during operations, and standard arrangement of the operative positions of the patients during prone-position operations is realized; the standard arrangement is reasonably designed on the condition that features of the prone-position operations, genders, heights and weights of the patients and different pressure bearing capabilities of limbs are fully taken into consideration, so that the limbs of the patients are reasonably supported to disperse the pressure borne by the trunks and the limbs of the patients so as to protect the patients; workload and working difficulty of medical workers are lowered; operation time of the patients is indirectly shortened, complications during and after the operations are reduced, hospital stays are shortened, and hospitalization costs are reduced.

A laparoscope lens washing-drying device comprises a sleeve, a washing tube, a drying component, a connecting piece and a handle, wherein the nominal dimensions of the inner diameter of the sleeve and the outer diameter of the laparoscope are the same and the sleeve and the laparoscope are in movable fit, two through holes used for mounting the washing tube and the drying component are arranged in the wall of the sleeve, an arc groove is arranged at the rear end of the sleeve, a flushing liquor outlet is arranged on the side wall at the front end of the flushing tube, a flushing liquor control switch is arranged on the side wall at the rear end of the flushing tube, the drying component is a pipe fitting provided with a water sucking sponge, an opening for introducing the flushing liquor into the water sucking sponge is arranged on the side wall at the front end of the pipe fitting, the front end of the flushing tube is inserted in the through hole for mounting the flushing tube on the wall of the sleeve, the front end of the pipe fitting provided with the water sucking sponge is inserted in the through hole for mounting the drying component on the wall of the sleeve, one end of the connecting piece is connected with the rear end part section of the flushing tube, the other end of the connecting piece is connected with the rear end part section of the pipe fitting provided with the water sucking sponge, and the handle is arranged on the connecting piece.

An intraoperative stent system, comprising an artificial blood vessel portion (4) and a main stent portion (5) sutured together with the artificial blood vessel portion (4); the intraoperative stent system also comprises a side branch stent portion (6), the side branch stent portion (6) transversely extending outward from the artificial blood vessel portion (4) or the main stent portion (5), and connecting to and communicating with the artificial blood vessel portion (4) or the main stent portion (5). The intraoperative stent system saves operation time and reduces operation difficulty.

The invention provides a navigation device capable of accurately positioning high tibial osteotomy. The navigation device comprises a positioning template and a bone cutting template, wherein the positioning template comprises a first fixing sheet, and navigation holes are formed in the first fixing sheet; the bone cutting template comprises a second fixing sheet, and a pendulum saw bone cutting groove is formed in the second fixing sheet. The invention further provides a manufacturing method of the navigation device capable of accurately positioning the high tibial osteotomy. The method comprises the following steps: collecting raw data, establishing a three dimensional model, determining a bone cutting plane and a bone cutting angle, designing navigation templates and making the navigation templates. Through the adoption of the navigation device and the manufacturing method thereof, which are disclosed by the invention, the diagnostic accuracy is further improved, the bone cutting accuracy is guaranteed, the limb alignment is restored, postoperative complications are reduced, and the functions of knee joints are improved.

The invention discloses a pelvis CT three-dimensional reconstruction image postprocessing method based on a coordinate system and belongs to the medical image processing field. The method comprises the following steps of 101) collecting patient pelvis CT data; collecting pre-operation pelvis two-dimensional CT case data of a patient; 102) establishing a three-dimensional case model; using the case data, through three-dimensional reconstruction, acquiring a three-dimensional pelvis model of a case; 103) establishing the coordinate system in the three-dimensional pelvis model of the case; 104) acquiring a distance shift and a rotation shift of a pelvic fracture; and establishing a mathematic model in the coordinate system in the step 103), and accurately calculating distance shifts and rotation shifts of a fracture portion projected on X, Y and Z axes. By using the method, an orthopedist can conveniently, visually and accurately know a shift mode and a degree of the pelvis fracture of the patient and can accurately guide intraoperative reset for the patient.

Provided are an elastic thread setting method in an endoloop and an elastic thread endoloop. The elastic thread setting method comprises the steps that one or more elastic threads are arranged along the outer wall of an endoloop spearhead, one or more threading holes is formed in the outer wall of the front end of the spearhead, the front ends of the elastic threads penetrate into the corresponding second ports of the threading holes, penetrate through the threading holes and penetrate out of the corresponding first ports of the threading holes, elastic thread loops are formed in a slipknot mode, the loops are reversely arranged on the outer wall of the front end of the spearhead in a sleeving mode, and the pore diameter of each threading hole is larger than the diameter of the corresponding elastic thread and smaller than the diameter of the knot point of the corresponding slipknot; when the tail ends of the elastic threads are tightened to make the loops get away from the pipe orifice of the spearhead and the knot points of the slipknots are tightened to the first pores, the first pores are taken as acting points, and the elastic threads are continuously tightened to make the pore diameters of the elastic thread loops gradually shortened. The invention further discloses the elastic thread endoloop using the setting method, the structure is simple, operation is convenient, an operation can be completed by one person, misoperation can be avoided, the wound surface of target tissues after the operation is extremely small, and postoperative complications and the probability of bleeding can be reduced.

The invention relates to a spinal surgery minimally invasive surgery navigation system. The spinal surgery minimally invasive surgery navigation system comprises an imaging portion, a treatment portion, and a navigation portion, wherein an imaging portion scanner performs scaning and imaging around a treatment object; the treatment portion includes a mechanical arm, a connecting rod, a power supply unit, a clipper, a puncture channel into a lesion of a spinal column, and an ablation electrode needle. The puncture channel is a minimally invasive surgical working cannula having a diameter of about 2 mm. The system has the advantages of simple structure, low cost and easy operation, and the CT and MRI images are combined to integrally reconstruct the intervertebral disc tissues of the patient's bone structure, nerves, blood vessels and compression nerves as well as the ligament before the surgery, according to the position of protrusion of intervertebral disc and the nerve compression, areasonable surgical approach is designed before the surgery, and the intraoperative scanning bone image is registered, a robot arm is remotely controlled to accurate ablate the compression nerve tissue through real-time navigation, and the safety and stability are good. The system avoids damage to normal tissues caused by doctor fatigue during surgery and effectively reduces the damage of radiation to patients and doctors.

The invention relates to an arterial puncture system and a method for determining an arterial puncture position. The arterial puncture system is provided with a surgical bed, mechanical arms, a braking device, an arterial detection device, a skin disinfection device, an arterial fixation device, a puncture needle operation device, an arterial pressing device and a control platform, and the controlplatform includes an image acquisition and analysis module, an image reconstruction module, a mechanical arm control module, a position collection module, a braking module, an arterial detection module, an arterial puncture module and an arterial hemostasis module. The method for determining the arterial puncture position is completed by using the arterial puncture system. Human body imaging, human body contour recognition, pulse-induced skin pressure change and the like are organically combined, a relationship between pulse wave conduction velocity and blood vessel wall hardness is utilizedto eliminate arterial diseases, and the complete fully-automated precise positioning arterial puncture system with practical operability is constructed.

The invention discloses an elastic thread ligation device and an elastic thread setting method; a gun head comprises a gun head body, a pull rod mount, a gun head sleeve, an elastic thread pull rod, and a gun head fixing sleeve; the outer wall of the gun head of the ligation device is provided with at least one elastic thread and a corresponding traction line, and the two penetrate one thread hole; the front end of the elastic thread forms a slipknot bail sleeved on the gun head fixing sleeve, and is hooked backwards on a hook; the front end of the traction line is connected with the elastic thread; when the elastic thread is released from the hook, the traction line and the elastic thread are simultaneously drawn, so the bail of the elastic thread and the traction line can leave the gun head; the elastic thread is continuously pulled, the thread hole on the gun head fixing sleeve can press the slipknot on the elastic thread bail; a bail hole diameter of the elastic thread can be reduced under the effect of two opposite forces. The elastic thread ligation device is simple in structure, convenient in operation, so operation can be completed by one person with no maloperation; postoperation wound surface of a target organ is very small, thus reducing postoperation complications and hemorrhagic rate.

The invention discloses a pharmaceutical composition with short pressure-reducing function and a preparation method of emulsion injection thereof. The pharmaceutical composition comprise: 1) dihydropyridine medicine clevidipine butyrate with the function of reducing pressure in short period; 2) alpha-DL-vitamin E; 3) one or more kinds of injection oil; 4) one or more kinds of emulsifying agents; 5) injection water or buffer solution. The pharmaceutical composition not only can reduce blood pressure but also can improve damage to tissue and organs of the user caused by lipid peroxidation, thereby obviously reducing load of liver and reducing incidence rate of hypertriglyceridemia.

The invention discloses an elastic thread ligator with a thread cutting device and a method for setting the elastic thread. The elastic thread ligator with thread cutting device comprises a gun head,a gun body, a negative pressure tube and at least one elastic thread. At least one thread penetrating hole is formed in the tube wall of the gun head. The thread penetrating hole comprises a first hole and a second hole. The negative pressure tube passes through the gun body and extends to the gun head after being connected with the negative pressure device. At least one electric drive device is arranged on that gun body. The elastic wire is formed into elastic wire sleeve in the form of movable knot and is sleeved on the outer wall of the gun head. The elastic wire is penetrated through the first hole, passes through the thread penetrating hole, and then passes through the second hole and is connected with the electric driving device. The two sides of the gun head are respectively provided with blades, the gun body is provided with a push-pull driving part, and the output end of the push-pull driving part is provided with a push rod, which extends to the second hole and resists the elastic line. The invention has the characteristics of complete thread cutting, convenient operation and the like, and is applied to the field of medical devices.

The invention relates to a perioperative period critical event prediction method based on cross-modal deep learning, and belongs to the field of artificial intelligence and medical application. The method comprises the following steps: step 1, constructing a multi-modal medical monitoring data set; 2, performing bimodal fusion feature learning on patient monitoring data and personalized data; 3, cross-modal collaborative learning feature extraction; 4, constructing a multi-modal critical event (death risk) prediction model; 5, verifying model feedback. The method serves as a critical adverse event prediction and early warning tool, and is an effective method for achieving real-time tracking, early diagnosis and early warning of main critical events after operation.

The invention discloses a guide wire navigation method for endoscopic biliary stent implantation for portal stenosis and a guide wire navigation system thereof. The method comprises the following steps: S1, receiving an input magnetic resonance pancreatic duct imaging image of a patient with portal stenosis; S2, performing image segmentation on the magnetic resonance pancreatic duct imaging imageof the patient with the hilar biliary stenosis based on an image segmentation method of deep learning, and predicting a navigation line from the tail end of the biliary duct to a hilar stenosis part;S3, receiving a real-time perspective image in an endoscopic retrograde cholangiopancreatography; S4, registering the two images according to the key points of the biliary duct on a magnetic resonance cholangiopancreatography image and the key points of the guide wire on the perspective image in the endoscopic retrograde cholangiopancreatography; and S5, displaying a registered composite image, and when the predicted navigation line in the composite image is not matched with the inserted guide wire, changing the position of the guide wire until the predicted navigation line is matched with the inserted guide wire. The method and the system can guide a doctor to perform biliary duct intubation, help the doctor to judge whether biliary duct intubation is correct or not, and reduce the use amount of a contrast media during an operation so as to reduce postoperative complications.

The invention provides a venipuncture system based on a near infrared spectroscopy. The venipuncture system based on the near infrared spectroscopy utilizes good permeability of a near infrared band spectrum on human tissue and the differences of optical properties of different tissue molecules according to the band spectrum for optical algorithm analysis, and the vein route can be calculated to operate venipuncture. Based on the venipuncture system, precise locating of veins and puncture automation can be achieved, the operation of medical workers is not needed, and medical resources are saved.

The invention relates to an artificial temporal-mandibular joint replacement prosthesis. The replacement prosthesis comprises a glenoid fossa prosthesis and a mandible ramus prosthesis; the glenoid fossa prosthesis is made of supra polymer polyethylene polymer and comprises a tissue surface in contact with the glenoid fossa and a function surface in contact with the mandible ramus prosthesis, the tissue surface comprises a wing plate which is in contact with the zygomatic arch and is fixed to the zygomatic arch and a protrusion part in contact with the glenoid fossa, and the function surface comprises a sunken part in contact with the mandible ramus prosthesis and stopping plates arranged at the two ends of the sunken part; and the mandible ramus prosthesis comprises a condyloid process head and a mandible ramus fixing handle, the condyloid process head is cylindral and is in contact with the sunken part, the mandible ramus fixing handle is attached to the outer lateral face of the mandible ramus. By means of the artificial temporal-mandibular joint replacement prosthesis, the standard form artificial joint prosthesis is more suitable for the dissection appearance of the Chinese and is better attached to the jaw, complications in and after an operation are effectively reduced, the using effect of the standard form artificial joint prosthesis is improved, and the service life of the standard form artificial joint prosthesis is prolonged.

The invention discloses an olecroanon tension side fixation bone fracture plate, which belongs to the technical field of orthopaedic medical apparatus and aims to provide an olecroanon bone fracture plate which realizes tension side fixation, strengthens the fixing strength and stability of a fracture part and facilitates the healing of fracture. The olecroanon bone fracture plate adopts the following technical proposal: the plate body plate plane of the olecroanon bone fracture plate is of an angle steel plate shape along a longitudinal shaft of a plate body; and the starting point of a bent angle steel plate is the lower edge of a semicircular external spread protrusion part to the rear end of the plate body, and the angle of the bent angle steel plate gradually changes from 110 to 80 degrees from the near end to the far end and corresponds to the anatomic shape of an ulna ridge. The olecroanon bone fracture plate has the advantages that the olecroanon bone fracture plate breakthroughs the planar design concept of the prior bone fracture plate, adopts the angle steel plate plane corresponding to the anatomic shape of the ulna ridge, realizes the real extension side fixation, strengthens the stability of fracture fixation, and facilitates the healing of fracture; besides, the olecroanon bone fracture plate adopts an uncommon proposal, obtains unexpected good effect, and solves the long-standing problem of treatment of the olecroanon fracture.

The invention relates to a prosthetic for repairing an opening or a defect in a soft tissue, to its preparation and use. The prosthetic of the invention comprises a substrate viscerally-coated with stabilized and non-completely dry fibrin. The prosthetic displays reduced postoperative complications following its implantation.

A porous nanometer carbon-polyvinyl alcohol hydrogel artificial cornea, which is used for patients of cornea diaphaneity descent and cornea blind caused by eye tissue diseases, consisting of an optical part and a supporting part, the optical part being made from transparent polyvinyl alcohol hydrogel, and the supporting part being made from black nanometer carbon materials. The optical part is provided with an upper and a lower surface, the supporting part enwraps the optical part, combines tightly with human cornea tissues, and is embedded in the optical part. The materials of the optical part protrude on the top and the bottom and overtops the supporting part at the joint of the two parts, and forms a trapezoid right-angle structure. The invention overcomes the shortcomings of existing techniques, and is capable of watertightness engomphosis with host cornea, preventing infection, degrowth of corneal epitheliums, antagonizing intra-ocular pressure, and preventing the forming of the back fibrous membrane of cornea. The artificial cornea has advantages of tenderness, good elasticity, certain tensile strength, convenience in surgical operation, and maximum decrease of complicating diseases.

The invention discloses a knee joint balance detection system in total knee replacement and a balance discrimination method thereof. The system is characterized in that a left pressure sensor set anda right pressure sensor set are attached to the left and right regions of a gasket, in the operation process, the gasket is placed in a gap between the thigh bone prosthesis and the tibia bracket, data of the left and right sensor sets can be obtained during 0-degree knee bending, 90-degree knee bending, internal rotation and ectropion, due to data analysis, whether the knee joints are located inthe balanced state or not is judged, and if the knee joints are in the non-balanced state, by properly repairing bones or adjusting the position of a prosthesis, the knee joints are in the balanced state finally. By keeping the position unchanged, surgical suturing is performed. By improving the accuracy of surgical knee joint balance, the important role in prolonging the service life of the postoperation prosthesis of a patient, reducing postoperative complications, and improving the postoperation living quality of the patient is achieved.

The invention relates to a titanium mesh manufacturing method for the alveolar bone defect, which comprises the steps of 1, synthesizing 3D model data of the dentition and jaw according to dentition data and jaw data; 2, generating three-dimensional data of a titanium mesh covering a bone defect structure according to the bone defect structure; 3, generating a positioning wing, and generating dataof the positioning wind connecting a natural tooth adjacent to the bone defect position and the titanium mesh according to the three-dimensional data of the titanium mesh and the 3D model data; 4, determining positioning holes used for fixing the titanium mesh on the jaw according to the three-dimensional data of the titanium mesh; and 5, printing the titanium mesh. The position matching betweenthe titanium mesh and the adjacent natural tooth is realized due to the setting of the positioning wing, the installation location of the titanium mesh can be positioned according to the positioning wing when the titanium mesh is installed so as to enable the titanium mesh to be accurately fixed at the predetermined location.

The invention discloses a sectional adjustable artificial hip joint prosthesis. The sectional adjustable artificial hip joint prosthesis comprises a handle-shaped body capable of being inserted into the femoral myelocavity, the lateral upper part of the handle-shaped body extends, an included angle between the axis of an extension end and the axis of the handle-shaped body is 110-140 degrees, the end part of the extension end is connected with a globoid matched with the acetabulum, the handle-shaped body is in an integrated structure or a meshed insertion structure, one end of the extension end is hinged with or fixedly connected with the globoid, and the other end of the extension end is hinged with the handle-shaped body. When the hip replacement operation is carried out clinically, the adjustment on the collodiaphyseal angle and the femoral neck anteversion is conveniently realized when different thighbone patients wear the hip joint prosthesis, while hip replacement is realized, dissection imbedding and fixation are realized, individual differences of the people are perfectly adapted, the hip replacement curative effect is improved, the accurate medical treatment is realized, and postoperative complications are further reduced.

The invention provides a dural / spinal dural biological patch material, a preparation method and application thereof. The obtained biological patch material is especially suitable for repair of dural / spinal dural defect, can maintain stable and non-degradable within 6 months-2 years after being implanted into the human body or animals, and can degrade gradually after more than 2 years. While ensuring certain mechanical properties and liquid seepage resistance, the biological patch material also has biocompatibility, has greatly reduced risks of postoperative complications and side effects, and meets the special requirements for dural / spinal dural defect repair materials.

The invention relates to a real time monitoring method of cortical somatosensory evoked potential of a transform joint sparse model. The method comprises following steps of constructing the sparse dictionary of the cortical somatosensory evoked potential; filtering successive two times of electroencephalogram measuring signals by the T-JSM (transform joint sparse model) model through a transform matrix H; carrying out joint sparse decomposition to the filtered electroencephalogram signals, thus obtaining a public sparse coefficient and respective sparse coefficients; reconstructing to obtain single time of CSEP (cortical somatosensory evoked potential) signals; and carrying out real time monitoring, wherein the optimum solutions of the transform matrix H and the sparse coefficients are solved at the same time through adoption of a joint optimization algorithm. According to the method, the single time extraction method of extracting weak CSEP signals from complex intra-operative electroencephalogram signals is broken through; similar components, namely the CSEP signals are separated from two times of electroencephalogram signals; the extraction difficulty is effectively reduced; the extraction accuracy is improved; the transform matrix H is increased; and therefore, the interferences of the EEG (electroencephalogram) to the sparse decomposition of the CSEP signals are reduced.

The present invention provides an intraoperative stent system, which includes an artificial blood vessel part and a main body stent part sewn together with the artificial blood vessel part, and is characterized in that the intraoperative stent system also includes a side A branch stent part, the side branch stent part extends laterally from the artificial blood vessel part or the main body stent part, and is connected to and communicates with the artificial blood vessel part or the main body stent part. The intraoperative stent system of the present invention can save operation time and reduce operation difficulty.

The invention relates to an intra-operative rapid blood vessel butt-joint assisting device which comprises a lining ring and long-rod diameter expanding pliers. The lining ring is formed by bending a long-strip-shaped sheet, one end of the long-strip-shaped sheet is provided with a clamp spring, the other end of the long-strip-shaped sheet is provided with multiple clamping holes, and the clamp spring is inserted into the clamping holes to fix the diameter of the lining ring; the outer wall of the lining ring is provided with an upper groove and a lower groove; the head end of the long-rod diameter expanding pliers is provided with two rows of protrusions, and the lining ring is arranged between the two rows of the protrusions to feed the blood vessel and prevent slipping; a plier handle on one side is fixedly provided with a scale metering panel, the corresponding portion of a plier handle on the other side is fixedly provided with diameter reading lines, and the scale metering panel is provided with an anti-slip clamp hoop which can slide along the scale metering panel, so that excessive pressing and holding are prevented. According to the intra-operative rapid blood vessel butt-joint assisting device, butt-joint of the self-blood vessel and the artificial blood vessel can be changed into a binding fixing mode from a suture anastomosing mode, the blood vessel butt-joint operation time and the intra-operative circulatory arrest time can be significantly shortened, the operation difficulty is lowered, anastomotic bleeding and postoperative complications are reduced, and increasing of the survival rate of a patient and improving of the postoperative recovery quality are facilitated.