127results about How to "Small surgical incision" patented technology

The present disclosure concerns a curvature-changing, accommodative intraocular lens (IOL) for implantation in the capsular bag of a patient's eye. The IOL includes a fluid optic body having a cavity for containing an optical fluid, the cavity at least partially defined by a sidewall extending around the cavity and defining a diameter of the cavity and a deformable optical membrane intersecting the sidewall around a circumference of the sidewall and spanning the diameter of the cavity. The IOL further includes a second optic body spaced a distance apart from the fluid optic body and a plurality of struts extending from the sidewall and coupling the fluid optic body to the second optic body. The struts are configured such that axial compression of the capsular bag causes the struts to deform the sidewall in a manner that increases the diameter of the cavity, modifying a curvature of the deformable optical membrane.

The invention discloses a modeling method of a necrosis caput femoris restoring model based on an umbrella-shaped caput femoris supporter. The modeling method comprises the steps that firstly, a three-dimensional model of a to-be-restored caput femoris is obtained, wherein the NURBS curved surface model of the to-be-restored caput femoris is obtained, the to-be-restored caput femoris is a caput femoris which exists in the thigh tissue necrosis area and is pre-restored by the caput femoris supporter, and the caput femoris supporter is composed of an umbrella-shaped supporter body and a supporting sleeve; secondly, the necrosis area needing to be separated is determined according to the shape of the umbrella-shaped supporter body, and a necrosis caput femoris model is established; thirdly, a caput femoris supporter model is established; fourthly, a necrosis caput femoris implantation model is established, wherein the necrosis caput femoris implantation model with an implantation channel and a three-dimensional model of an implanted bone are established; fifthly, the necrosis caput femoris restoring model is established. The modeling method is simple in step, reasonable in design, convenient to achieve and good in using effect, the restoring model of the caput femoris supporter implanted into the necrosis caput femoris can be easily, conveniently and quickly established, and the quality of the established restoring model is high.

An IOL includes a fluid optic body having a cavity defined by a sidewall, a deformable optical membrane intersecting the sidewall around an anterior circumference of the sidewall, and a posterior optic intersecting the sidewall around a posterior circumference of the sidewall. The posterior optic includes a central protrusion extending anteriorly into the cavity and the deformable optical membrane includes a ring-shaped protrusion extending posteriorly into a space between the sidewall and the central protrusion. A second optic body is spaced apart from the fluid optic body and coupled thereto via a plurality of struts. Axial compression causes the plurality of struts to deform the sidewall in a manner that increases the diameter of the cavity, modifying a curvature of the deformable optical membrane is modified. Contact between the ring-shaped protrusion and the central protrusion defines a maximum modification to the curvature of the deformable optical membrane.

The present invention relates to a percutaneous pediculus arcus vertebrae screw internal fixation system. It includes the following three portions: channel integrated type pediculus arcus vertebrae screw, screw plug and self-positioning connection rod. Said invention also provides the concrete structure of above-mentioned every portion, and also provides the concrete operation method of said percutaneous pediculus arcus vertebrae screw internal fixation system.

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.

The present invention relates to a twin-trough channel connecting percutaneous pedicle screw inner fixing system, which comprises a twin-trough channel connecting pedicle screw, a connecting rod and a plug screw. The twin-trough channel connecting pedicle screw comprises a pedicle screw and a double-trough connecting channel. The twin-trough connecting channel is a hollow tube and one side of the tube wall is provided with a whole rabbet; the internal side of two thirds tube wall above the opposite side is provided with a groove and the one third tube wall below is provided with an inverted U-shaped semi-rabbet; when the connecting channel is completely connected with the screw, the two rabbets are superimposed; the connecting channel is connected with the pipe interface of the pedicle screw head through screw threaded covered joint, cutting grafting, clamped joint or a long needle axial fixed connecting structure and is provided with an internal screw thread on the lower one second section inside the channel, which is connected with the internal screw thread of the tube joint of the screw head. The present invention adopts the integrated design of the twin-trough work channel and the screw, thus avoiding multiple replacement of expansion channel, reducing the damages of the approach tissue caused by multiple entering, simplifying the operational machinery and shortening the operation time.

The invention provides a set of instruments for anterior thoracic and lumbar vertebra surgery, comprising a long-handle drag hook I, a long-handle periosteum detacher II, a long-handle osteotome III, a long-handle curet IV and a long-handle endplate curet V; the long-handle drag hook I comprises a drag hook point 1, a head section 2, a body section 3, a back end circular hole 4; the long-handle periosteum detacher II comprises an obtuse head section 5, a body section 6 and a handle 7; the long-handle osteotome comprises a flat osteotome head 8, a body section 9 and a back end 10; the long-handle curet IV comprises an obtuse curet head 11 with hook, a body 12 and a conical handle 13; the long-handle endplate curet V comprises a hollow curet head 14 with elliptic structure, a body section 15 and a handle 16. The invention has advantages of reasonable design, easy manufacture process, and low cost. By using the instruments of the invention, smaller surgical incision, improved surgery range of vision, optimized operative procedure, reduced surgery difficulty, reduced hemorrhage in surgery and shortened surgery time can be obtained.

The invention belongs to the field of medical apparatuses, and in particular discloses a multi-operation channel laparoscope system with a sheathing canal, which comprises a laparoscope with an operation channel, a laparoscope sheathing canal with more than two operation channels and a multi-operation channel laparoscope image system, wherein the laparoscope comprises an endoscope main body, an operation channel communicated with the endoscope main body, a water inlet channel, a water outlet channel, an ocular input end, a cold light source input end, an endoscope end part and a hard endoscope front end part. The multi-operation channel laparoscope system enters an abdominal cavity from a natural orifice (the umbilical region), under the monitoring of a laparoscope image pickup system, various laparoscope surgery apparatuses with different shapes and different performances are inserted through the multi-channel laparoscope sheathing canal and a plurality of the operation channels of the laparoscope to carry out various minimally invasive surgeries, and an umbilical region cut is stitched after the surgeries. The multi-operation channel laparoscope system has the advantages of surgery cut reduction and simple and safe operation, and avoids the external conflicts between the laparoscope apparatus and the sheathing canal and the laparoscope. The multi-operation channel laparoscope system can truly achieve scarless surgeries, and reduce the surgery wounds and pain of patients to the minimum.

The invention relates to the technical field of manufacturing orthopedics department implantation materials, in particular to a molding technology for an orthopedics department implantation material. The molding technology includes the following steps that a, a fracture portion of a fracture patient is scanned to obtain an injured fracture data; b, the fracture data is imported into 3D simulation software to be processed to obtain a 3D image of the fracture portion; c, medical three-dimensional reconstruction is carried out on the injured fracture portion for resetting in the 3D simulation software, and a 3D image data after reconstruction resetting is obtained; d, the 3D image data after reconstruction resetting is imported into a fast forming machine to obtain a fracture portion model through heaping; e, the fracture portion model is bent and molded to obtain the implantation material capable of being implanted directly. According to the molding technology for the orthopedics department implantation material, the implantation material corresponding to the fracture portion is bent and molded in vitro based on the three-dimensional reconstruction resetting model so that the implantation material can be matched with the fracture portion. The molding technology is simple in process, short in processing cycle and low in manufacturing cost.

The invention relates to a medical apparatus for dental surgery, and more specifically to a fang removing device, comprising a helical auger with its lower end provided with tapping screws and its upper end provided with a connecting screw rod. The helical auger is characterized in that: a nut to the helical auger is screw threaded on the upper part of the connecting screw rod; the middle part ofan elastic rod is provided with a long-strip-like major through hole and the helical auger is installed through the hole. The fang moving device in the invention has a simple construction, is convenient for use, can remove fangs fast at a time, leaves a small wound in operation, and enables patients to suffer little pain.

An acetabulum posterior wall angle locking anatomic bone plate pertains to the technical field of surgical medical devices. The invention provides the acetabulum posterior wall angle locking anatomic bone plate which has small surgical incision, safe and reliable fixation and is conductive to the healing of fracture. The invention includes a plate body which is provided with screw holes, the screw holes are two rows of oblique holes, which are respectively arranged along one side of the plate body which is opposite to the edge of the acetabulum and the opposite side, the oblique included angle Alpha of the central line of the screw holes which are arranged at the one side of the plate body which is opposite to the edge of the acetabulum and the plate surface is 30 degrees to 45 degrees, and the oblique included angle Beta of the central line of the screw holes at the opposite side and the plate surface is 30 degrees to 60 degrees. The invention can make use of the self-shape to ensure the fixation of fracture to be most close to the normal structure after the reduction and fixation of the fracture. The invention has the integrity and the stability which are not possessed by the combined usage of a plurality of bone plates. The invention can reduce surgical incision, reduce the dissection of soft tissues, have less oppression on the periosteum and be more conductive to the healing of fracture. The placement and the removal are easy, and the cost is low. When a screw is screwed, the rod part of the screw can accurately avoid the acetabulum.

The invention provides an intracranial hemorrhage transformation model after acute cerebral ischemia mechanical recanalization and a microRNA screening method and application thereof. The intracranialhemorrhage transformation model after acute cerebral ischemia mechanical recanalization is established by using a hyperglycemia combined suture-occluded method MCA for occlusion for 5 hours and thenrecanalization for 19 hours. The intracranial hemorrhage transformation model has 33 microRNAs expressions with significant difference. A new method for the study of intracranial hemorrhage transformation after acute cerebral ischemia mechanical recanalization, and an innovative means for the diagnosis and treatment of reperfusion injury after endovascular interventional recanalization in acute ischemic stroke is provided.

The invention discloses a pleural cavity puncture flusher, which comprises a wide adhesive tape, a dirt can, a lotion bottle and a drainage bag, and further comprises a puncture drainage device, wherein the puncture drainage device comprises a middle segment outer thread puncture sleeve, an adjusting rotating support plate, a puncture needle head rod and a puncture needle tail rod, a T-type piston Y pipe is respectively connected with a suction washing device, an accessory inner thread drainage soft pipe, a hook needle and a cutting knife, the suction washing device comprises a suction washing ball, a suction pipe and a washing pipe, a round hole is arranged on a screw end of the puncture needle head rod, the screw end of the puncture needle head rod is connected with the puncture needle tail rod in a thread mode to be sleeved into the middle segment outer thread puncture sleeve, and the tail end of an inner thread drainage soft pipe after the puncture needle head rod and the puncture needle tail rod are taken out is connected with the drainage bag or the suction washing device. The pleural cavity puncture flusher has the advantages that the pleural cavity puncture flusher is smell in operative incisions, effectively prevents stimulation and damage to pleura and lungs of patients, reduces course of treatment, promotes cure, reduces cold of the patients, is convenient for life and normal activities of the patients, is simple in structure, low in cost and easy to select and operate and the like, and is suitable for pleural cavity puncture drainage washing of the patients.

The inVention discloses a sacroiliac screw digitalized imbedding method based on 3D printing and relates to the technical field of medicine. The method includes the following steps that 1, an ideal safe screw channel for sacroiliac screws is designed by means of Minics software, wherein preoperatiVe pelVis CT scanning data of a patient is collected, the Minics software is imported for three-dimensional reconstruction of a three-dimensional pelVis model, and sacroiliac joints are reset through three-dimensional editing; 2, a naVigation module is designed by means of SolidWorks and Mimics software; 3, 3D printing of a naVigation module entity is carried out; 4, the naVigation module obtained by means of 3D printing is adopted for assisting in embedding the sacroiliac screws. The functions ofthe related software are fully mined, by means of a new design and implementation method, digitalized design and a 3D printing technology, conVenient, radiation-free, safer and minimally inVasiVe embedding of the sacroiliac screws is achieVed with small incisions.

The invention discloses an injectable temperature-sensitive hydrogel artificial lens material having a cell membrane biomimetic property and a preparation method thereof, and belongs to the field of biomedical materials. The material is prepared through free radical polymerization of polymerizable monomers and an initiator, wherein the polymerizable monomers are divided into three classes; the first class comprises N-isopropylacrylamide, vinyl pyrrolidone, 2-(Dimethylamino)ethyl methacrylate or other temperature-sensitive functional monomers; the second class comprises 2-phenoxyethyl methacrylate or 2-phenoxyethyl acrylate; the third class comprises 2-methylacryloyloxyethyl phosphorylcholine; and the initiator is azodiisobutyronitrile. The material is temperature-sensitive and has favorable water solubility and flowability at low temperature, thereby being beneficial to injection operation; the material can be gelated within the temperature range of a human body, and has favorable mechanical and optical properties; and the artificial lens has the characteristic of cell membrane biomimetic property, has favorable biocompatibility and can reduce the proliferation of human epithelial cells on the surface of the artificial lens, so that surgical incisions are effectively decreased through an injection means.

A miniature condyle bone cutting device comprises a driving shaft (2), a gearbox (3), a positioning rod (4), a front condyle bone cutting knife (5), two distal bone cutting knives (6 and 7) and two rear condyle bone cutting knives (8 and 9). The driving shaft (2) is a power input shaft, power is transmitted to the front condyle bone cutting knife (5) via the gearbox (3), the two distal bone cutting knives (6 and 7) and the two rear condyle bone cutting knives (8 and 9) via the gearbox (3), and the positioning rod (4) is located at the front end of the gearbox (3). The miniature condyle bone cutting device breaks through a traditional design concept of knee joint bone cutting, traditional five-surface bone cutting is omitted, surgical instruments for total knee joints and the design of a knee joint prosthesis are more adaptive small-incision minimally invasive replacement technology, vertical bone cutting can be carried out from a distal femur of a human body to a proximal femur of the human body, due to the vertical bone cutting, exposure area can be greatly reduced, a surgical incision is reduced, surgical time is shortened, and sufferings of patients are relieved.

The invention provides a lung lobe traction combination instrument for video-assisted thoracic surgery (VATS). A lung lobe clamp in the lung lobe traction combination instrument for VATS comprises a first clamp arm, a second clamp arm and a traction rope, wherein the first clamp arm and the second clamp arm are identical in length, convex parts at the middle of the first and second clamp arms are connected trough a hinging shaft, a spring is mounted on the hinging shaft, two ends of the spring are respectively contacted with the first clamp arm and the second clamp arm, the inner side of the left end of the first clamp arm is connected with a first clamp plate, a first groove is formed on the right end of the first clamp arm, the inner side of the left end of the second clamp arm is connected with a second clamp plate, a second groove is formed on the right end of the second clamp arm, the first clamp plate and the second clamp plate correspond to and are contacted with each other, the first and second grooves are same in shape and size and are located in the same vertical plane, one end of the traction rope is connected with the first clamp arm or the second clamp arm, and the other end of the traction rope is connected with a pulling ring. According to the lung lobe traction combination instrument for VATS, the problems, existing in the prior art, that many surgical incisions are caused, surgical wound is relatively large, surgical operations are fussy, and many operators are needed can be solved.

The invention relates to an anastomat for laparoscope appendectomy. The anastomat comprises an anastomat body, a sleeve and a negative-pressure suction tube, the anastomat body is arranged on the inner wall of the sleeve, and the negative-pressure suction tube extends into the sleeve and can slide along the sleeve; guiding sleeves for guiding the negative-pressure suction tube to slide are arranged on the exterior of the negative-pressure suction tube and connected to the sleeve through supporting rods, the guiding sleeves and the supporting rods are provided with communicating air inflating cavities, and the guiding sleeves are elastic; a clamp claw of the anastomat body is arranged at one end of the sleeve, an anti-air leaking sealing cover is arranged at the other end of the sleeve andprovided with a small hole, and the negative-pressure suction tube is inserted into the sleeve through the small hole. Through the single anastomat instrument, the steps of appendectomy and sewing canbe completed, incisions of a laparoscopic surgery are reduced, the processes of the surgery are reduced, and abdominal cavity contamination and intestinal canal stimulation are reduced.

The invention discloses a retractable cutting and suturing machine, and belongs to the field of cutting and suturing machines in medical apparatuses. The retractable cutting and suturing machine structurally comprises an outer tube and a handle arranged at the rear end of the outer tube. The retractable cutting and suturing machine is characterized by also comprising a first supporting rod, a second supporting rod, a first seam cutting mechanism, a second seam cutting mechanism, an aperture angle regulating assembly, an opening and closing control assembly and a driving assembly, wherein the front end of the outer tube is hinged to the rear end of the first supporting rod and the rear end of the second supporting rod; the front end of the first supporting rod is hinged to the rear end of the first seam cutting mechanism, and the front end of the second supporting rod is hinged to the rear end of the second seam cutting mechanism; and the front end of the first seam cutting mechanism and the front end of the second seam cutting mechanism are in transmission connection with the aperture angle regulating assembly. Compared with the prior art, the retractable cutting and suturing machine disclosed by the invention has the characteristics that wounds are small, and cutting and suturing can be completed in one time.