132results about How to "Simple surgery" patented technology

The invention provides a prosthetic implant for supporting the urethra, the implant comprising a flexible elongate element and being provided: with a central portion for being positioned beneath the urethra when the elongate element is in its functional position in the body; and two ends situated on either side of the central portion; wherein said ends are positioned relative to the central portion in such a manner that when the elongate element is in the functional position, one of the ends of the elongate element is disposed between the right internal obturator muscle and the right external obturator muscle, while the other end is disposed between the left internal obturator muscle and the left external obturator muscle. The prosthetic implant is suitable for correcting urinary incontinence.

The invention provides a spinal fusion implant, comprising: a cylindrical body with an expandable front end; a cap-shaped extrusion part, which expands the front end of the main body by bearing tension; Can be used as a guide for the engagement of fasteners; fasteners, which engage in closures and push against extrusions. In the present invention, the main body can be inserted into the fusion part during operation, and the front end of the main body can be expanded with extrusions and fasteners, so that the spinal fusion graft can be fixed to fit the anterior and posterior spaces between adjacent vertebrae.

The invention provides a left auricle plugging device and a production method thereof. The left auricle plugging device comprises a nickel-titanium alloy net support, wherein the nickel-titanium alloy net support is tubular, a left disc surface and a right disc surface are arranged on two ends of the nickel-titanium alloy net support, the left disc surface is connected to the right disc surface through a moving part, and flow resisting films are respectively arranged in the left disc surface and the right disc surface in a horizontal direction. The production method of the left auricle plugging device comprises the following steps of knitting to be slender net shaped, and then carrying out initial thermal treatment, shaping and final thermal treatment so as to produce one left auricle plugging device. The left auricle plugging device has the advantages of simple structure and convenience for use, an operation process is simplified, the operation time is shortened, and meanwhile, when the left auricle plugging operation is carried out by utilizing the left auricle plugging device, X-ray is not needed, so that the harm to doctors and patients is greatly reduced. The left auricle plugging device produced by the production method of the invention has good performance and reliable use.

There is provided a cochlear implant for improving the hearing ability of a patient suffered from hearing impairment comprising an internal receiving unit implanted into the body, which comprises a receiving part for receiving external signal, an active electrode and a reference electrode, characterized in that the active electrode is constructed with a single electrode wire having different thickness in at least two different regions. The active electrode of the internal receiving unit is inserted into a space formed at between the mastoid bone and the ear canal skin and end of the active electrode is inserted into the scala tympani of the cochlea and directly stimulates spiral ganglion. The cochlear implant provides easier implantation into the body and improved hearing ability at a lower cost.

The skull patch making process includes the following steps: computerized tomographic imaging to acquire the information of the skull defect part of the patient and the peripheral soft tissue, image designing to reconstruct the 3D head prototype of the patient, designing the dummy for the defect part, leading the designed dummy camber into fast laser forming machine for making patch mold, and final jointing, comparing and cutting titanium web plate to form the ultimate skull patch. The present invention has high precision, low cost, short making period and excellent post-operational restoring.

A circumcision anastomat is structurally characterized in that a glans penis head is an oval cavity, the left side of the oval cavity is open, the top of the right end of the glans penis head is fixedly connected with the left end of a glans penis head pull rod, an angle of 45-90 degrees is formed between the head body center axis of the glans penis head and the plane of a glans penis head edge, clamping grooves are formed in the glans penis head edge, an elastic ring which is matched with the clamping grooves to be used is arranged in the clamping grooves, a circumcision body which can slide along the glans penis head pull rod is arranged on the glans penis head pull rod coaxially, a blade is arranged on the inner side of the circumcision body, a fixed handle is arranged on the circumcision body coaxially, a movable handle is connected with the left side of the fixed handle, the left end of the circumcision body is contacted with the movable handle through a damping piece, a reset spring and an insurance piece are connected between the movable handle and the fixed handle, a tractive rotary knob is arranged on the right side of the movable handle, and the right end of the glans penis head pull rod is connected with the tractive rotary knob through a threaded structure. By means of the circumcision anastomat, circumcision anastomose operations are simple, efficient, safe and fast, surgical wounds are smooth and attractive and are in conformity with normal anatomical structures and appearances, and requirements for postoperative care are low.

The present invention relates to aortic arch three collateral support blood vessels comprising an aorta support vascular that comprises an aorta ascenden section, an aortic arch section and an aorta section; the aorta support vascular also comprises three collateral artery support vasculars which are fixed respectively on an aortic arch section arc surface of the aorta support vascular and are formed into an five-way type. The three collateral artery support vasculars are corresponding respectively to an arteria anonyma, a left common carotid artery and a left subclavian artery. The invention is capable of greatly simplifying an operation process and greatly shortens the time of a deep hypothermia and a circulation arrest, which is characterized by not only omitting an inosculation between an artificial vascular graft and three branches of the aortic arch but also reducing bleeding rate and operation risk. In an operation, the invention changes an operation method from a partial blood vessel replacement plus partial endovascular repair to a complete endovascular repair.

The use of an intravascular cooling element to induce hypothermia in connection with a medical procedure. According to a first aspect of the present, invention, a coronary bypass procedure is conducted in which a patient's blood is oxygenated with the patient's lungs and in which blood is circulated using the patient's heart or using an intracorporeal pump. The procedure preferably comprises: (a) positioning a heat transfer element in a blood vessel of a patient; (b) cooling the body of the patient to less than 35° C., more preferably 32±2° C., using the heat transfer element; and (c) forming a fluid communicating graft between an arterial blood supply and the coronary artery. The body of the patient is preferably heated to about 37° C. using the heat transfer element subsequent to the step of forming the fluid communicating graft. According to a further aspect of the invention, a hypothermic medical procedure is provided while a patient is in a conscious or semiconscious state, comprising (a) administering a beta-blocking drug to the patient; (b) delivering a heat transfer element to a blood vessel of the patient; and (c) cooling a region of the patient or the body of the patient to less than 35° C. using the heat transfer element.

The invention requests to protect an implantation-type nervous stimulation system of controlling wireless limb motions and a control method thereof, which relates to a technical field of human implantation-type medical devices. The system makes use of the principle of advanced wireless sensing network technology, constructs a star-type network and not limits to a wireless stimulation network of star-type network topology, and the topological structure is flexible and the extensibility is strong, and stimulation networks with different scales are constructed according to requirements of controlling of different limb motions; by adopting a wireless time synchronous protocol and the coordination work of synchronous dormancy and synchronous awaking of an external control terminal and an internal stimulation unit, the system realizes a multi-target implantation-type nerve stimulation method of wireless limb motion controlling, and the Burst working mode is low in power consumption and can prolong the service life of the internal stimulation unit greatly. The system and the control method thereof provide a novel stimulation device and a control method for the recovery treatment of nervous system diseases or patients of nervous system injury, and are beneficial to realize the controlling over more coordinate and natural limb motions in low trauma through the wireless synchronous controlling stimulation of multiple nerves and multiple muscles.

The invention discloses a method for preparing an acetabulum supplementary material. The method comprises the steps that thin layer CT image data of a hip joint of a patient is collected, and an acetabulum three-dimensional model and a femoral head three-dimensional model are created; an acetabulum supplementary material three-dimensional model is created; the acetabulum three-dimensional model, the femoral head three-dimensional model and the acetabulum supplementary material three-dimensional model are subjected to finite element analysis, so that weight-bearing position stress distributionanalysis results under two simulation states are obtained; the two weight-bearing position stress distribution analysis results are compared; the acetabulum supplementary material three-dimensional model is subjected to porous treatment; repairing and optimizing treatment is conducted; the acetabulum supplementary material three-dimensional model, the acetabulum three-dimensional model and the femoral head three-dimensional model which are obtained after repairing and optimizing treatment are prepared, and the matching rate among entities are verified on the basis of an acetabulum entity, thefemoral head entity and the acetabulum supplementary material entity. Accordingly, insufficient covering of the acetabulum to the femoral head can be effectively supplemented, and the stress concentration problem is solved.

Methods and implants to treat anterior cruciate ligament (ACL) injuries are disclosed. The methods involve advancing the insertion of the patellar tendon to the proximal tibia by means of a partial osteotomy and a wedge-shaped cage (30). The wedge-shaped cage is specifically designed to facilitate transfer of not only compressive loads, but also of shear loads due to pull by the patellar tendon at its insertion to the tibial tuberosity. The cage decreases the angle between the patellar tendon and the common tangent plane formed by the condyles of the femur and the condyles of the tibia (sometimes called tibial plateau) and consequently modifies the internal joint force, restoring stability to the joint even if the ACL is ruptured. The methods and implants are applicable to both human and canine patients.

The invention relates to a linear type cutting and suturing device with an inter-bridge structure. The linear type cutting and suturing device comprises a nail abutting device, a nail bin, a nail bin seat, a cutting knife and a sliding knife rail; the nail abutting device is aligned with the nail bin in an assisting mode to form a nail, the nail bin is installed on the nail bin seat, and the cutting knife is installed on the position, located at the back central axis, of the sliding knife rail; when the cutting knife moves ahead and enters the nail bin along the sliding knife rail, a sliding knife groove is reserved at the central axis of the nail bin; the cutting knife slides ahead on the sliding knife rail, enters the sliding knife groove of the nail bin and arrives at the front end, and a cutting portion is exposed to perform cutting and suturing. According to the linear type cutting and suturing device with the inter-bridge structure, suturing and cutting are synchronously completed, front end cutting and two-side suturing can be achieved, an anastomotic stoma is in a linear shape, and the inter-bridge type is in the mode that the cutting and suturing position only occurs at the front end of the action tissue, and the back end is kept complete.

The invention relates to a blood vessel stent device and use methods thereof. The caliber of the front half section of the blood vessel stent device can be equal to the caliber of the rear half section of the blood vessel stent device, or the caliber of the front half section of the blood vessel stent device can be larger than or less than the caliber of the rear half section of the blood vessel stent device, so as to adapt to blood vessels of different size of a receptor. The use methods of the blood vessel stent mainly comprise two use methods, i.e. an end-to-end anastomosis method and an end-to-side anastomosis method, wherein an end-to-end part is that a guide wire is put in a receptor blood vessel which is to be used as a anastomosis blood vessel, the other section of blood vessel to be anastomosed is sheathed on the guide wire, and the blood vessel stent for anastomosis is slid into the receptor blood vessel along the guide wire. The strip label of the blood vessel stent can be directly seen from a transparent blood vessel sheath. When the strip label is between two blood vessel sections, the blood vessel sheath is dropped back to release the self-expandable blood vessel stent to complete the anastomosis. The invention has the advantages that the surgical process can be effectively simplified, the surgical time is saved, the surgery success rate is improved and the like.

The invention relates to a method for forming a composite rhBMP-2 elasticity modulus graded porous titanium alloy support rod for the femoral head and the neck. Titanium alloy powder is prepared with an electrode induction melting gas atomization method, and the integrated elasticity modulus graded porous titanium alloy support rod consisting of a head part, a body part and a tail part is prepared according to actually measured biomechanical parameters of the femoral head, the neck and a rotor, wherein the head part and the body part are prepared by sintering the titanium alloy powder and pore-forming agents through the adoption of a cold rolling method, the tail part is prepared by directly sintering the titanium alloy powder, and the porous titanium alloy support rod is immersed in a rhBMP-2/gelatin controlled release microsphere solution. The product prepared by the method can simulate the biomechanical properties of the femoral head and the neck of a human body to the utmost extent, thereby being beneficial to the stress transfer between materials and bone tissue interfaces, avoiding poor bone restoration caused by the stress shielding effect; and simultaneously, sustained-release microspheres on which bone induced growth factors (rhBMP-2) are loaded endue the materials per se with good bone conductivity.

An expandable intra-medullary nail comprises a nail body and a central rod arranged inside the nail body. The nail body is a hollow tube. The tube walls of the trunk and the far end of the nail body are provided with three or more than three expandable slots lengthways. The far end of the central rod is provided with an expandable head. The near end of the central rod is provided with a screw thread type axial tow attachment. The near end of the nail body is provided with a fixed structure which is a lock nail hole which is arranged at the near end of the nail body and is equipped with a lock nail. The present invention is characterized in that the lock nail is formed by a stainless steel nail body and degradable biological active material wrapped at the outside of the nail body, or the lock nail is made from the degradable biological active material, or the hole wall of the lock nail hole is provided with a layer of degradable biological active material. Compared with the prior art, as the stress simulation can be provided for the middle and later period of the fracture healing and the provided stress simulation is strengthened gradually, the nail of the present invention has the advantages of being good for the porosis at the early period of the fracture, being good for promoting the rebuilding and the cicatrization of bone during the medium and later periods of the fracture and improving the fracture cicatrization effect further.

The invention belongs to a medical instrument, in particular to a dynamic locking screw which comprises a fixation screw. The dynamic locking screw is characterized in that a thread casing is arranged outside the fixation screw, and a shaft end of the fixation screw is provided with a structure of a polish rod with an outer thread; a hollow structure with an inner thread is adopted on the inner surface of the thread casing; and the fixation screw and the thread casing are fixed together in a manner that the inner thread is connected with the outer thread to form a dynamic elastic micro motion structure in which the thread casing can move axially along the fixation screw. The invention provides motions nearly parallel to a fracture part for a patient through the dynamic structure in which the thread casing can move axially along the fixation screw, so that the dynamic locking screw has greater potentials to form an annular callus with higher mechanical strength, thereby a quicker and more stable healing process is provided and the formation of asymmetrical poroma is avoided. The dynamic locking screw has the advantages of small wound, simple operation, quick postoperative recovery and the like.

The invention is related with an external fixator that is used in High Tibial Osteotomy (HTO) surgeries, including at least one positioner (1) for gripping the leg from both sides, at least one angulation device (3) and a proximal arch (8) that is connected to the positioner (1), at least one proximal schanz holder (7) on the proximal arch (8), at least one distal schanz holder (4) at the bottom of the angulation device (3), at least one osteotomy block (5) that enables to set the size and the location of the incision on the proximal arch (8), at least one fibular head positioning device (2) that is connected to the angulation device (3) and at least one angular indicator (scale) (19) on the fixator, on which the correction can be adjusted and controlled.

The invention provides an implant used for artificial dental implant when a bone mass of alveolar bone is insufficient. The implant comprises an implant neck part, an implant shoulder part, an implant body part and an implant root part, and is characterized in that the surface of the implant has no screw thread, and the implant body part and the implant root part are a flat cone shape. The implant can be made in to a straight shape or a curved shape, as well as an embedded way or a non-embedded way. The implant provided by the invention is simple in structure, easy for mass production, and thus relatively cheap. According the implant, when the bone mass of the alveolar bone of the patients is insufficient or severely insufficient, appropriately shaped implant can be selected, and without filling artificial bone meal and pasting biofilms to graft bone, the dental implant can be carried out. Because the expensive artificial bone meal and biofilms are not used, implant costs can be greatly reduced, and burden of patients with alveolar bone atrophy is alleviated, thereby being relatively conducive to the promotion of artificial dental implant.

The invention provides an artificial iris capable of fixing an artificial lens as well as a material and a processing method of the artificial iris. The artificial iris comprises an artificial iris diaphragm, a loop for fixing the artificial iris, and a fixing structure for fixing the artificial lens. By utilizing the self convex structure of the artificial iris, the artificial iris can penetrate through the sclera wall and be flexibly fixed to the sclera wall, so that the operation of fixing the suture is avoided, the operation is simple and feasible, the iris is kept stable in the eye, meanwhile, a suture used for fixing is not needed during implantation, the viscoelasticity enables the iris to easily pass through the small incision, and no injury is caused. The artificial iris provided by the invention is further provided with the fixing structure for fixing the artificial lens, so that the artificial lens can be conveniently fixed to the iris as for the cataract patient with the injured sac.

The invention provides a dynamic-pressurizing-locked bone screw and a use method thereof. The dynamic-pressurizing-locked bone screw comprises a screw sleeve and a screw core, wherein the screw core comprises a top cap, an unthreaded rod and a screw head, the screw sleeve sleeves the periphery of the unthreaded rod and the periphery of the screw head, a gap exists between the screw sleeve and the unthreaded rod, and the screw sleeve is connected with the screw head. Through the dynamic-pressurizing-locked bone screw, which achieves that a fracture site moves almost parallel to the fracture site through fixing lateral cortices, the stress concentration of the root of the screw can be avoided, the screw can be prevented from rupture, and meanwhile, micro friction is provided for the broken ends of a fractured bone so as to faster promote the formation of calluses, and thus, a faster and stable healing process is provided.

Provided is a curved manual surgical equipment allowing a plurality of surgical equipments to access affected areas. The curved manual surgical equipment includes: a curved frame; and a manual surgical equipment which includes a handle allowing an operator to control a surgical equipment, an internal connector allowing the surgical equipment to perform the translation and rotation motions, and an end effector attached to a tip of the internal connector to operate on affected areas and is inserted into an inner space of the curved frame in plural, wherein the internal connector is configured to include a plurality of rotating parts which performs translation and rotation motions within the curved frame; and a link which transfers pressure, tension, and rotating force between the plurality of rotating parts.