68 results about "Reconstruction surgery" patented technology

A device used in conjunction with fixation hardware to provide a two-stage process to address the competing needs of immobilization and re-establishment of normal stress-strain trajectories in grafted bone. A method of determining a patient-specific stress / strain pattern that utilizes a model based on 3D CT data of the relevant structures and cross-sectional data of the three major chewing muscles. The forces on each of the chewing muscles are determined based on the model using predetermined bite forces such that a stiffness of cortical bone in the patient's mandible is determined. Based on the stiffness data, suitable implantation hardware can be designed for the patient by adjusting external topological and internal porous geometries that reduce the stiffness of biocompatible metals to thereby restore normal bite forces of the patient.

The present disclosure relates to a device for use in ligament reconstruction surgery. The device includes a handle, a tube coupled to the handle, and a locking mechanism coupled to the handle. A method for use during ligament reconstruction surgery is also disclosed.

The present invention discloses a measuring and guiding device for reconstruction surgery. The measuring and guiding device includes: a pair of rotary aims, a connector, and a pair of fixators. Each rotary arm includes: a first shaft, a first joint body and a second joint body. The pair of rotary arms is joined together by extending through each of the first joint bodies using the connector. Besides, each fixator includes: a second shaft, a third joint body and a guiding portion, and each third joint body is connected with one of the second joint bodies. With the implementation of the present invention, the measuring and guiding device is capable of measuring an operating site and guiding the operation precisely during reconstruction surgery.

The present disclosure relates to a device for use during ligament reconstruction surgery. The device includes a handle and a shaft coupled to the handle, the handle including a first channel for housing of an insert, a second channel, a third channel for housing of the shaft, a first window, a second window, and a groove. A method for use during ligament reconstruction surgery is also disclosed.

The present disclosure relates to a method of creating a bone tunnel during ligament reconstruction surgery. The method includes placing a guide wire through the femur, the guide wire having a first end portion including a pointed tip and a second end portion; placing a drill mechanism over the first end portion of the guide wire, the drill mechanism having a first end portion including a drill bit and a second end portion including an attachment portion; coupling an adaptor assembly to the attachment portion, the adaptor assembly including a shaft; coupling a drill to the shaft and operating the drill to create a tunnel in the femur; coupling a drill bit assembly to the second end portion of the guide wire and locating the assembly against the drill bit of the attachment portion; and operating the drill to create a counter bore within the tunnel.

The present invention discloses a measuring and guiding device for reconstruction surgery. The measuring and guiding device includes: a pair of rotary aims, a connector, and a pair of fixators. Each rotary arm includes: a first shaft, a first joint body and a second joint body. The pair of rotary arms is joined together by extending through each of the first joint bodies using the connector. Besides, each fixator includes: a second shaft, a third joint body and a guiding portion, and each third joint body is connected with one of the second joint bodies. With the implementation of the present invention, the measuring and guiding device is capable of measuring an operating site and guiding the operation precisely during reconstruction surgery.

A method of biological reconstruction and a device having a major chamber or compartment in the form of the desired anatomy with a shaped chamber inside the main chamber flipped up and held in place by one or more inflatable piston chambers. The inflatable piston chambers selectively hold the shaped chamber and are pressurized in order to support the shape of the device upon implantation. Valves are provided to allow filling the major chamber, the shaped chamber and the piston chambers with a biologically compatible fluid.

Controlled release of biopharmaceutical growth factors from a hydroxyapatite coating on a bioresorbable interference screw used in cruciate ligament reconstruction surgery on a human. Biologically active scaffolds, such as interference bone screws used for ligament fixation, made by growing calcium phosphate-based hydroxyapatite coatings on bioresorbable poly(α-hydroxy ester) scaffolds that provide controlled mineral dissolution and controlled release of bone morphogenetic protein-2. The biologically active scaffold provides improved bioavailability of BMP-2 growth factor that in turn provides enhanced graft-bone healing in the tibial bone tunnel. The coating method uses surface hydrolysis and modified simulated body fluid incubation which does not require solvent or heat and is conducted at room temperature.

The invention relates to a tibia tunnel locating device and method based on a personalized navigation template and belongs to cruciate ligament reconstruction surgery. The method comprises the steps that firstly, CT data and MRI data of a patient are collected, a data model is processed, and three-dimensional reestablishment is conducted on the data model; secondly, according to the three-dimensional model, the position of a tunnel is measured and determined, a bone surface needed by locating is obtained through partition, and a navigation template model is established; thirdly, the navigation template is manufactured through the rapid forming technology; finally, locating and verification are conducted through the navigation template and a locating device of a guider, and then a Kirschner wire is inserted through drilling. According to the tibia tunnel locating device and method based on the personalized navigation template, the navigation template is easy to locate and easy to operate, due to the auxiliary locating calibration of the guider, it is avoided that the error of the Kirschner wire inserted into the inner opening of the tunnel through drilling is amplified due to navigation template catheter small-angle swing deviation caused by soft tissues residues and other factors, the locating precision can be effectively guaranteed, and the surgical effect is more reliable.

A self-supporting prosthesis, in particular for plastic and reconstructive surgery, comprises a body provided with a main portion suitable to reshape or fill the area of the body of the patient in which the prosthesis is intended to be implanted. The self-supporting prosthesis is characterised in that the body comprises a fixing portion suitable to allow fixing directly on the muscle tissue of the area of implantation.

Provided are methods of isolating an extracellular matrix from mesenchymal progenitor cells which are characterized by a reduced differentiation ability into an adipogenic lineage as compared to adipose-derived mesenchymal stem cells. Also provide isolated extracellular matrix and hybrid devices comprising electrospun elements and extracellular matrix which can be used for various tissue regeneration, repair and reconstruction surgeries.

Devices for carrying out subperiosteal minimally invasive jaw bone augmentation and reconstruction procedures, to develop a passageway and surgical site in a concealed area of patient tissue, where the surgical site is not exposed. The devices have shanks with specially configured tips to facilitate maneuvering the device through mammalian tissue to develop a tunnel in the tissue and a remote surgical site within the tissue. The device tips have one or more peripheral cutting surfaces that direct the positioning of the tunnel formation when the instrument handle is manipulated, e.g., by rotation, angular, forward or rearward motion. Embodiments of the devices are configured with tips that have a wide spread for cutting and elevating tissue, and with tips that may be maneuvered to condense bone graft material being implanted at a surgical site concealed within the tissue.

The invention provides an oral lip mucosa ocular surface reconstruction instrument. The oral lip mucosa ocular surface reconstruction instrument is composed of a pair of microsurgical forceps, a pair of microsurgical scissors, a microsurgical needle holder, a left-hand haemostatic clamp and a right-hand haemostatic clamp. By the adoption of the oral lip mucosa ocular surface reconstruction instrument, oral lip mucosa transplantation surgery can be safely and efficiently completed, the surgical time can be shortened by 30 to 45 minutes, and the number of surgical personnel can be reduced by one; the oral lip mucosa ocular surface reconstruction instrument is suitable for operation in a narrow space, and the surgical field can be easily exposed; the haemostatic clamps have the local pressurizing haemostatic function and the remarkable traction ectropion function, so that the surgical field is fully exposed, operation is convenient, and the mucosa tissue is not injured. The oral lip mucosa ocular surface reconstruction instrument is an oral lip mucosa surgery combined instrument which is reasonable in design, simple in structure, suitable for dedicated spaces and parts, capable of fully exposing the surgical field, particularly suitable for ophthalmology oral lip mucosa ocular surface reconstruction surgery, convenient to operate and manufacture, and capable of being applied and popularized conveniently.

The invention provides a guider for 3D printing for dental implantation and superior maxillary bone integrated reconstruction. The guider comprises a transplanted bone guide plate, a dental implantation guide hole seat, a first superior maxillary bone fixing plate and a second superior maxillary bone fixing plate, wherein the guide track of the transplanted bone guide plate is consistently matched with a transplanted bone extending track; a plurality of transplanted bone fixing holes connected with transplanted bones are formed in the transplanted bone guide plate; the dental implantation guide hole seat is arranged on the lower side of the transplanted bone guide plate and holes of the dental implantation guide hole seat are opposite to the transplanted bones; the first superior maxillary bone fixing plate and the second superior maxillary bone fixing plate are respectively connected to two ends of the transplanted bone guide plate and are provided with inner side surfaces which are attached to corresponding superior maxillary bone surfaces; and a plurality of superior maxillary bone fixing holes connected with superior maxillary bones are respectively formed in the first superior maxillary bone fixing plate and the second superior maxillary bone fixing plate. By the guider, partial operations, such as implantation hole preparation and implantation of implants, of dental implantation are assisted while a transplanted bone guider guides superior maxillary bone reconstruction surgery.

The invention discloses a coincident cutting assembly of a cannular anastomat, and relates to a digestive tract reconstruction operative instrument. The coincident cutting assembly is suitable for being used in cooperation with the cannular anastomat, is used for end-end coinciding, end-side coinciding and side-side coinciding of the digestive tracts in operations for reconstructing the digestive tracts such as the esophagus, the stomach and the intestines, and comprises a nail abutting-against base assembly, a nail bin assembly and a puncturing connecting shaft. When the nail abutting-against base assembly is coincided with the nail bin assembly, the coincided face is a slope, and the slope angle of the coincided face ranges from 10 degrees to 60 degrees. The nail abutting-against base assembly comprises a nail abutting-against base cover, a left clamping reed, a right clamping reed, a positioning shaft, a nail abutting-against base and a cushion cutter ring. The nail bin assembly comprises a nail bin protective cover, a nail bin, an annular cutter, a nail pushing sheet, a nail bin sleeve and coincided nails, the upper portion of the nail bin sleeve is upwards slant by 10 degrees to 60 degrees with the horizontal plane as the standard, installation holes are formed in the lower bottom of the annular cutter, distribution of the installation holes is coincident with that of annular cutter installation bosses on the nail pushing sheet, the top end of the positioning shaft is provided with a clamping reed installation platform, and the left clamping reed and the right clamping reed form a set to be inserted into a clamping reed installation hole of the positioning shaft.

A cartilaginous structural member (CSM) for use in penile reconstruction, for the correction of developmental defects, postoperative reconstruction, and for reconstructive preprosthetic surgery. The cartilaginous structural member (CSM) comprise of live cells seeded onto pre-formed shaped structure which may be biodegradable. The live cells may comprise chondrocyte and the cartilaginous structural member (CSM) for use in reconstructive surgery may be constructed of polyglycolic acid. The implant structure is applicable to use for the regeneration and reconstruction or augmentation of semirigid members of the body such as the penis, nose, ear and locations which naturally has cartilage. Further, the cartilaginous structural member (CSM) may be used in plastic surgery such as, for example, breast augmentation or pectoral augmentation. The cartilaginous structural member (CSM) may be a composite cartilaginous structural member (CSM) comprising additional anchoring and strengthening elements for anchoring or changing the structural strength of said composite cartilaginous structural member (CSM).

Disclosed are methods, devices, and systems for treatment of an abnormal wound healing response. The methods, devices, and systems can be used to treat solid ulcerated tissue, such as diabetic foot ulcers (DFUs), arthritic tissue, muscle soreness, joint pain, varicose veins, obesity, and peripheral artery disease. Additionally, the methods, devices, and systems can promote the healing of xenograft, allograft, autograft, or engineered tissue following reconstruction surgery. The methods, devices, and systems include the ability to determine an optimal set of pulse parameters that are specific to wound healing. In embodiments, the methods, devices, and systems include components for guiding the user on electrode placement based on anatomical or electrical measurements, delivering a custom series of electric pulses, applying heat, and using feedback from physiologic measurements to control the device.

The invention provides a biological retina, which is applied to tissue repair in the field of ophthalmological department. The tissue repair includes glaucoma trabeculectomy, a neovascular glaucoma surgery, uveitic glaucoma, a pterygium surgery, a strabismus surgery, a nasolacrimal duct operation, an orbital surgery, an ocular plastic surgery, a conjunctival scar tissue reconstruction surgery, a burn repair surgery and a corneal ulcer surgery; and the preparation method comprises the following steps: preparing a high-purity type I collagen and glacial acetic acid water solution according to a preset proportion and emulsifying; and vacuumizing the emulsified slurry and freeze-drying the slurry so as to obtain a collagen film having a three-dimensional porous structure. The biological retina disclosed by the invention has beneficial effects that the prepared biological retina, which takes the collagen, as a major ingredient, is good in biocompatibility and biodegradability and is capable of controlling an inflammatory reaction; the high-purity collagen is free from antigenicity and repellency; by virtue of the three-dimensional porous structure, the random and discrete hyperplasia of fibroblasts is guided; and the biological retina can inhibit conjunctival scars and conjunctival contraction, and can keep normal intraocular pressure.

Virtual surgery systems, methods, and apparatuses that provide for the prediction, evaluation, and validation of various cosmetic and reconstructive surgical procedures. The virtual surgery systems, methods, and apparatuses utilize a scanner, measurement software, queries to a postoperative patient scan catalog, conversion of a preoperative image to a Virtual Reality Modeling Language (3-D) image, grafting and scaling of chosen postoperative surgery candidates, conversion from the converted 3-D image to a scanner readable format, and measuring the forecasted 3-D image.

The invention provides a screw capable of absorbing a compound interface. The screw comprises a screw cap, a screw rod, a screw head connector, and a gene thin layer, wherein a self-taping thread is arranged on the outer edge of the screw rod; the gene thin layer covers the surface of the thread, and is an activation layer formed by a base layer of chitosan, and a hyaluronic acid layer and a pEGFP-COMP (Plasmid Enhanced Green Florescence Protein-Cartilage Oligomeric Matrix Protein) plasmid layer wrapped by lipidosome-2000, which are sequentially covered from inside to outside at an interval. The plasmids pEGFP-COMP are gradually deposited on the surface of the interface screw by using the electrostatic interaction of the chitosan, the hyaluronic acid and the lipidosome. The screw has good biocompatibility and bone inductivity, release of a COMP gene can be effectively regulated and controlled to enhance and promote the calcification fiber cartilage effect, the host cell transfection rate is increased, the bone-ligament interface is good in coalescence after the ligament is induced to be implanted, and intra-articular ligament reconstruction surgery can be combined with gene therapy. The screw is reasonable in design, simple and convenient to operate, low in cost, and applicable to industrial application, and has extremely strong feasibility.

The invention aims to provide an anterior cruciate ligament reconstruction surgical navigation method and system, and the method comprises the steps: carrying out the three-dimensional reconstruction of a virtual model of an affected part of a patient through a preoperative segmentation and modeling module, and setting a reference point in the virtual model; acquiring real operation scene information, and calculating position coordinates of a marker on a patient through a camera calibration and video acquisition module; carrying out space registration on the virtual model and a real surgical site by utilizing a virtual-real registration technology module, configuring a surgical planning path on a display, and carrying out navigation; and displaying a real surgical imaging result through an imaging and position tracking module, tracking the marker in real time and calculating coordinate information of the marker so as to complete surgical navigation for anterior cruciate ligament reconstruction. The point-to-point registration is adopted to automatically complete the registration of the virtual scene and the real scene, when the registration of the reference point is inaccurate, the registration of the reference point can be manually completed through the position information fed back in real time, and the registration rate is improved.

A system and method for simulating the reconstructive surgery of a cruciate ligament using medical images are disclosed herein. The system includes a processor, the processor is configured to acquire a first image of a knee region of a subject, and a 3D model including the knee region, identify the locations of reference points, on the 3D model, acquire a second image corresponding to the changes in the movement of the knee region, and track changes in the locations of the reference points using the acquired second image, and simulate changes in the length of a virtual ligament attributable to the changes in the movement of the knee region based on the tracked changes in the locations of the reference points and the location of the insertion of the virtual ligament received from a user.

The invention provides a pressure sore prevention hat for sick children after a craniofacial reconstruction surgery. The pressure sore prevention hat for sick children after the craniofacial reconstruction surgery comprises a hat body and a hat brim extending along the hat body, wherein hat strips are symmetrically arranged along the center in the hat body, the hat strips extend from an internal curved surface of the hat body, and a ventilation channel is formed between the hat strips; a plurality of ventilation holes are formed in the hat strips along the length direction of the hat strips, and the ventilation holes pass through the hat body; and two outer sides of the hat brim adjust the size of the pressure sore prevention hat through an adjusting mechanism, and an inner side surface ofthe hat brim is a non-slip surface. Compared with related technologies, the pressure sore prevention hat for sick children after the craniofacial reconstruction surgery, provided by the invention, has the advantages that the ventilation channel is formed by the hat strips arranged at the top, and the plurality of ventilation holes are formed in the hat strips, so that a better ventilation effectcan be achieved so as to prevent formation of a pressure sore; furthermore, the size of the hat can be adjusted by adopting the adjusting mechanism; and the pressure sore prevention hat is wide in applicability, convenient to wear and simple in operation.