98 results about "Secondary surgery" patented technology

The invention discloses a light-driven / temperature-driven double-trigger shape memory antibacterial and anti-tumor bone scaffold and a fused deposition modeling (FDM) preparation method thereof, and is characterized in that polylactic acid (PLA) is used as a matrix, and polyethylene glycol (PEG) and nano magnesium hydroxide (Mg (OH) 2) / copper oxide (CuO) are uniformly dispersed through an organic solvent blending method; a composite wire is prepared through the processes of drying and film forming, crushing and granulation and screw extrusion, and finally, the integrated molding of the three-dimensional porous scaffold is realized through an FDM (fused deposition modeling) process. According to the stent, temperature and near-infrared light double-triggered shape memory is achieved through cooperation of glass transition regulation and control of PLA-PEG and the photothermal effect of the nano metal oxide particles. Nano Mg (OH) 2 / CuO endows the scaffold with multi-mode antibacterial and anti-tumor functions: 1) Mg < 2 + > / Cu < 2 + > releases and destroys microbial membrane potential; according to the stent, the limitation of shape fixation of a traditional implant is broken through, shape self-adaption can be triggered through light / heat stimulation, irregular bone defects can be accurately attached, the risk of a secondary operation is avoided, and the stent has remarkable advantages in minimally invasive orthopedic repair.

The invention discloses a biliary tract stent with a positioning structure for hepatobiliary pancreatic surgery, relates to the technical field of biliary tract stents.The biliary tract stent is suitable for treating biliary tract stenosis or obstruction, and comprises a tubular stent body and the positioning structure, the positioning structure comprises a Y-shaped anchoring protrusion and a developing mark, the Y-shaped anchoring protrusion is arranged on the outer wall of the stent, and the developing mark is arranged on the outer wall of the stent. Both the cross section and the vertical section are Y-shaped, the embedding force with the inner wall of the biliary tract is remarkably enhanced, the postoperative displacement risk is reduced, the developing mark adopts iodine-doped polylactic acid or gold rings and tantalum particles, X-ray and ultrasonic bimodal developing is supported, the intraoperative positioning accuracy is improved, the stent body and the anchoring protrusions can be made of degradable materials, the degradation performance is excellent, and the stent is suitable for popularization and application. The stent is suitable for short-term implantation, does not need to be taken out through a secondary operation and is good in biocompatibility, the surface of the stent can be coated with a hydrophilic or antibacterial coating, and inflammation and infection risks are reduced. The manufacturing process adopts extrusion molding, laser cutting, injection molding, hot pressing or mechanical embedding, the process is simplified, the efficiency is high, and the method is suitable for micro bracket production.

The invention discloses a minimally invasive degradable reduction device for thoracolumbar vertebral fracture, and relates to the technical field of medical instruments. The mounting mechanism is mounted on the outer wall of the connecting rod in a sleeving manner; the pedicle screw is movably inserted into the middle of the top end of the mounting mechanism; an implantation mechanism; through cooperative work of the connecting rod, the mounting mechanism, the pedicle screw and the connecting mechanism, the whole reduction device adapts to minimally invasive approach modes such as percutaneous puncture and can be implanted into the body of a patient through a percutaneous puncture channel, a skin incision of the minimally invasive approach is small, damage to surrounding tissue is greatly reduced, and the reduction effect is good. Due to the layered design of the screw body in the pedicle screw, bone tissue ingrowth is promoted while the supporting strength is kept, and the reduction device is made of degradable materials, can be gradually degraded along with fracture healing after an operation and is metabolized and absorbed by an organism, and does not need to be taken out through a secondary operation, so that physical and mental pain of a patient is relieved; and the medical cost and the potential risk of the secondary operation are also reduced.

The present invention provides a combined fracture internal fixation device, which includes a fixing rod and a plurality of sliding fixing members slidably mounted on the fixing rod. A torsion locking member is rotatably mounted above each of the plurality of sliding fixing members. A upper half clamping cover is slidably mounted on one side of the torsion locking member. The torsion locking member is used to twist the using direction of the upper half clamping cover, and the upper half clamping cover is used to cooperate to eliminate the installation deviation of the surgical screw. The present invention can adapt to more surgical plans and can match the differences caused by some bone difference factors, so as to solve the problem that the existing screw installation holes are often pre-fixed and non-adjustable. Due to factors such as the fracture site, type and individual bone differences of different patients, this design of fixed holes is often difficult to accurately adapt, and even requires a second operation to adjust the fixation method.

The utility model relates to technical field of ureteral stent solves the technical problem that ureteral stent still needs special operation to take out, especially to a kind of ureteral stent of operation-free convenient to take out, including as the support base ureteral stent body, the ureteral stent body outside is provided with the limiting component for increasing its limiting capacity, the ureteral stent body bottom end is provided with the convenient component for taking out from the patient's body, the convenient component includes the fixed seat fixedly connected in the bottom of ureteral stent body both sides, the utility model discloses because the setting of convenient component, the process of ureteral stent body can be taken out from human body inside more convenient, and will not hurt patient urethra, so that patient oneself can also take out, need not suffer the harm of secondary operation, can also alleviate the burden of doctor simultaneously.

The present application relates to the technical field of medical devices, and provides a system with a spiral structure for cavity embolization and a delivery method, the system comprising: an embolization device which is in a spiral structure in a natural state and can be freely stretched and contracted under stress; the embolization device comprises an inner mesh layer and an outer mesh layer which are concentrically arranged, and the sparseness of the outer mesh layer is greater than that of the inner mesh layer; the embolization device is used for sleeving the embolization stent and the inner circle of the spiral structure is tightly attached to the outer wall of the embolization stent. The system, after the release of the embolization device with a spiral structure, can tightly adhere to the periphery of the embolization stent, increase the diameter of the cavity part of the embolization stent, fill the entire cavity or cyst in a physical occupation manner, improve the occlusion effect, avoid the occurrence of internal leakage, and thus avoid secondary surgery. Moreover, since the sparseness of the outer mesh layer is greater than that of the inner mesh layer, the blood flow direction can be better changed, the blood flow speed is reduced, the endothelial material in the blood is quickly deposited in the embolization, the endothelialization is completed, and the tumor cyst is atrophied.

The utility model discloses a poly (p-dioxanone) medical suture with an anti-inflammation capsule, and relates to the technical field of medical sutures. The protein anti-inflammatory suture line comprises a suture line inner core, a protein adhesive layer, a protein microcapsule and anti-inflammatory drug particles, wherein the suture line inner core is made of a PPDO material. According to the utility model, the anti-inflammatory drug of the wound can be fully and comprehensively absorbed; the inner core of the suture line has good compatibility, and rejection and tissue inflammation are reduced; the suture line can be gradually degraded in the body and finally converted into carbon dioxide, water and the like, and the carbon dioxide, the water and the like are naturally discharged by the human body and do not need to be removed through a secondary operation, so that the infection risk possibly caused by the secondary operation is reduced, and the infection risk is reduced; the suture line has long strength maintenance time and can provide continuous support for the wound until the tissue is healed; the protein microcapsules and the anti-inflammatory drug particles are beneficial to reducing inflammatory reaction.

The invention discloses an absorbable particle cannula loaded with double radiosensitizers, and aims to effectively improve the internal radiation radiotherapy effect and facilitate implantation of radioactive particles, and the whole material can be degraded and absorbed in vivo and does not need to be taken out through a secondary operation. The absorbable particle sleeve mainly comprises an absorbable particle sleeve body for packaging radioactive particles, a spacer which is arranged in the sleeve body and is used for spacing the radioactive particles, and a polydopamine coating which is loaded with a double radiosensitizer of metal nanoparticles and aromatic ring structure drugs. In the polydopamine coating, the metal nanoparticles are nanoparticles formed by reducing metal ions on the surface of the coating in situ through catechol groups of polydopamine; and the medicine is loaded on the surface of the coating through non-covalent acting force (pi-pi stacking action, hydrophobic interaction and / or electrostatic attraction).

The present invention discloses a degradable magnesium mesh for personalized reconstruction of alveolar bone defects in 3D printing; the magnesium mesh designs a personalized model structure based on CT data, and uses 3D printing technology to achieve high-precision preparation of the magnesium mesh, so that the magnesium mesh closely fits the anatomical shape of the alveolar bone; it overcomes the disadvantages of traditional titanium meshes that need to be bent during surgery and have a high exposure rate after surgery, reduces the surgical difficulty and time, and improves the surgical success rate. The surface of the magnesium mesh is a completely open regular hexagonal structure, and this mesh hole structure has the advantages of self-supporting, easy forming, high printing accuracy, and good mechanical properties. At the same time, combining the degradability of magnesium materials and the osteogenic advantages of magnesium ion bone induction, it solves problems such as stress shielding of titanium meshes, non-degradability, and the need for secondary surgery to remove them during dental implantation. The preparation process of the present invention is simple, the preparation cycle is short, the loss of raw materials is small, the repeatability is high, there is no pollution, and the obtained magnesium mesh has the characteristics of controllable shape and high precision, and can be used as a new generation of repair scaffolds for large-area bone defects in oral alveolar bone.

This invention belongs to the field of medical devices, specifically a combined internal fixator and fixation method for fixing joints with micro-motion. The combined internal fixator includes a first bone screw and a second bone screw. A movable connecting structure is provided between the connecting ends of the first and second bone screws. The movable connecting structure includes a groove and a shaft. The groove includes an insertion port and a mounting groove communicating with the insertion port. The mounting groove has a semi-circular cross-section. The shaft includes a semi-circular shaft adapted to the mounting groove, which is rotatably accommodated within the mounting groove, allowing the first and second bone screws to rotate relative to each other around a first radial axis. This invention, through a hook-groove sliding self-locking structure, achieves controllable micro-motion and integrated implantation for fixing joints with micro-motion. It has achieved significant technological advancements in preserving joint physiological function, simplifying surgical procedures, avoiding secondary surgeries, and reducing the incidence of complications. It has important clinical application value and is suitable for fixing joints with micro-motion.

The invention discloses an optimization method, device and equipment of a biodegradable bone fracture plate and a storage medium, and is applied to the technical field of medical instruments, and the method comprises the following steps: constructing a finite element model of femoral shaft fracture; in the finite element model, applying a dynamic biomechanical load simulating a human body walking cycle; the stress level of the bone fracture plate and the displacement level of the fixed thighbone are used as optimization targets, and multi-dimensional parameters of the bone fracture plate are optimized; delimiting a safety area of the bone fracture plate according to the optimized bone fracture plate design parameters; according to the method, the technical steps of base material type selection and process optimization, finite element model construction and dynamic load application, multi-dimensional parameter optimization, safety area demarcation and personalized adaptation and the like are organically combined; the technical problems of secondary operation, stress shielding, high biological safety risk, poor adaptability, high engineering difficulty and the like of a traditional bone fracture plate are effectively solved.

This invention discloses a piezoelectric sensing adaptive internal pressure fixation bone plate system for treating tibial plateau fractures, belonging to the field of orthopedic implantable medical devices. It includes a bone plate, pressure bolts, and an external control module. The bone plate is available in three specifications according to the Schatzker classification: lateral L-type, medial T-type, and bilateral composite type, with transverse internal pressure holes. The pressure bolts embed a PZT-5H piezoelectric sensing device and have an overload-resistant groove between the head and neck, enabling real-time acquisition of the compressive stress at the bolt-bone interface. The external control module transmits signals wirelessly via Bluetooth 5.0 and uses a PID algorithm to non-contactly drive the bolts via magnetic field coupling to adaptively adjust the compressive stress to 30–50 MPa. The system has two levels of safety protection: 55 MPa coil power-off protection and 80 MPa groove breakage protection. This system eliminates the need for secondary surgery, dynamically maintains optimal stress throughout the fracture healing cycle, with a healing time ≤12.5 weeks, a complication rate ≤4%, and an excellent / good knee HSS score rate ≥88%. It is suitable for Schatzker type I-VI tibial plateau fractures.

The invention provides a peripheral nerve stimulation system. The peripheral nerve stimulation system comprises a stimulation front end, a release part, a wire and a base, the stimulation front end and the release part are used for being implanted into a body, and the stimulation front end is used for being connected with a target nerve; the base is used for being arranged outside a body; the two ends of the wire are connected with the base and the stimulation front end respectively. The base is configured to send stimulation energy to the stimulation front end through the wire; wherein the stimulation front end is configured to be degradable, and the release part is configured to drive the wire to be released and separated from the stimulation front end when receiving release energy from the base; after the lead is disengaged from the stimulation front end, the lead is configured to be removed from the body. By means of the configuration, the precision and effectiveness of intraoperative electrical stimulation treatment and the convenience of percutaneous electrical stimulation treatment are achieved at the same time, and a secondary operation can be omitted after treatment is completed.

The utility model is applicable to the technical field of medical care equipment, and provides a lifting pillow for preventing lower limbs from rotating inwards, which comprises two side plates respectively arranged on two sides of a fixed bottom plate, a positioning plate arranged at one end of the fixed bottom plate, one ends of the two side plates are respectively connected with the fixed bottom plate, and the other ends of the two side plates are respectively connected with the positioning plate. The upper fixing belt is arranged in a semi-open cavity formed by the fixing bottom plate, the side plates and the positioning plate, the two ends of the upper fixing belt are connected to the two side plates respectively, the two ends of the positioning fixing belt are connected to the back face of the positioning plate respectively, and the two ends of the reinforcing tensioning piece are connected to the upper portion of the positioning plate and the top faces of the side plates respectively. The lower limbs of a patient are effectively fixed through the lifting pillow, the phenomenon of dislocation of the artificial prosthesis caused by unconscious inward rotation, adduction, excessive hip bending and the like is effectively eliminated, the secondary operation phenomenon caused by dislocation of the artificial prosthesis is eliminated, the nursing quality of the patient is improved, and nursing intervention is enhanced. The risk of prosthesis dislocation is reduced, detumescence is facilitated, the treatment effect is improved, and early rehabilitation of a patient is effectively promoted.

The invention discloses a maxillary bone reduction guide plate for orthognathic surgery secondary operation, and relates to the technical field of oral and maxillofacial surgery medical auxiliary instruments, the maxillary bone reduction guide plate comprises a left side guide plate and a right side guide plate, the left side guide plate and the right side guide plate are configured to be capable of being attached to bony structure surfaces on the two sides of a patient's maxillary bone pear-shaped hole respectively, the left guide plate and the right guide plate are each provided with at least one nail hole used for being fixed to the bone surface. The left side guide plate and the right side guide plate are attached to the bone walls of the maxillary frontal process and the maxillary alveolar process to achieve in-place and fixation, so that resetting of the maxillary osteotomy block is guided, the structure is simple, use is convenient, the accuracy and reliability of the secondary orthognathic operation are effectively improved, and pain of a patient is effectively relieved.

The application discloses a pedicle screw system, which comprises a screw expansion sleeve, a screw body, a fixing base, a fastening nut, a fixing rod, a guide cylinder and a bone cement injection device; the screw expansion sleeve is provided with a connecting sheet with a gradient structure and expansion wings with through grooves, can reversely engage with a bone hole, and has good anti-loosening effect. The guide cylinder can realize component positioning and assembly guiding, and can also cooperate with the bone cement injection device to complete preoperative bone cement pre-injection strengthening before the screw body and the fixing base are assembled. The fixing base is provided with a guide plate and a limiting type fixing rod, and assembly positioning is convenient. The pedicle screw system has high fixing strength, is suitable for osteoporosis patients, does not need secondary surgery, is simple in assembly, and has strong clinical practicability.

The utility model relates to the technical field of dental nails, in particular to a degradable biological tent nail for increasing dental implant bone, which is made of biodegradable materials and comprises a threaded portion, a tent cap and a self-tapping tip, the tent cap and the self-tapping tip are arranged on different sides of the threaded portion, and the self-tapping tip is connected to the end of the threaded portion. The thread part is connected with the tent cap through a connecting part, a hollow part is reserved in the tent cap for filling and observing the height of bone meal, and an assembling groove is reserved in the tent cap for screwing operation of a screwing screw part. According to the degradable biological tent nail for increasing the dental implant bone, the degradable polylactic acid bone nail does not need to be taken out after the dental implant bone is increased and healed in clinical use, so that the operation cost is reduced; the hollowed-out design of the top of the tent nail facilitates observation of the height of bone meal, and the clinical operation efficiency is improved.

The invention discloses an axial micro-motion and rigid locking dual-mode switchable fracture external fixation support, and relates to the technical field of orthopedic medical instruments, and the key points of the technical scheme are that the fracture external fixation support comprises two bone needle assemblies; the outer sleeve is connected with one bone needle assembly; the telescopic inner core rod is connected with the other bone needle assembly and is sleeved in the outer sleeve in an axial sliding manner; the elastic buffering assembly is arranged between the outer sleeve and the telescopic inner core rod; the mode switching assembly is arranged on the telescopic inner core rod and can be operably connected with or separated from the outer sleeve; when the mode switching assembly is separated from the outer sleeve, the telescopic inner core rod can axially slide relative to the outer sleeve and act on the elastic buffering assembly. When the mode switching assembly is connected with the outer sleeve, the telescopic inner core rod is rigidly connected with the outer sleeve through the mode switching assembly. Fixing modes can be conveniently switched according to different stages of fracture healing, secondary operation is not needed, and the fracture healing environment is optimized.

The invention discloses a drainage self-closing device for preventive ileum fistulization, relates to an ileum fistulization device, and aims to solve the problem that the conventional preventive ileum fistulization method needs a secondary operation. The device comprises a Y-shaped drainage tube, a water injection tube, an air injection tube, a purse string, a suture line, a knot pushing rod and a suture needle, wherein a bag receiving hole is formed in the side wall of the inlet end of the Y-shaped drainage tube, and the tube wall of the outlet end of the Y-shaped drainage tube is a T-shaped tube wall; the end part of the gas injection tube is a balloon; the knot pushing rod is a hollow pipe, a lower hole is formed in the lower end of the pipe, and a wire outlet hole is formed in the side wall of the pipe close to the lower hole; and an inclined plate plug is arranged at the upper part of the wire outlet hole in the hollow pipe. The device is used for fistulization, healing of the fistulization opening is accelerated, and the device can be used for clinical medicine, in particular to the field of gastrointestinal surgery.

The invention provides a dynamic separable distal tibiofibular syndesmosis injury fixing screw, and belongs to the field of surgical instrument equipment. A recovery channel is arranged in the far-end screw body, a mechanical tension structure is arranged in the recovery channel, the mechanical tension structure comprises a pre-pressing spring and a shear pin, and one side of the shear pin is connected with the near-end screw body; a shearing seam is formed in the connecting position of the shearing pin and the near-end screw body, an open groove is formed in the center of the shearing seam, a blocking piece is arranged in the open groove, a limiting groove is formed in the outer wall of the shearing pin, one end of the pre-pressing spring is connected with the shearing pin, the other end of the pre-pressing spring is connected with a sealed cabin, and a solution capsule is arranged in the sealed cabin. A limiting ring is arranged on one side of the sealed cabin, and a fixing assembly is arranged on one side of the limiting ring; a protective film is arranged on one side of the shearing seam, load triggering separation is achieved through a mechanical tension structure, a secondary operation is avoided through a built-in recovery channel, the sealed cabin can release healing promoting medicine, and the advantages of dynamic fixing and healing promoting are achieved.

This application discloses a hydrogel composition, its preparation method, and its applications, relating to the fields of regenerative medicine and biomedical materials technology. The hydrogel composition comprises o-nitrobenzyl alcohol-modified tetra-arm polyethylene glycol and methacrylated hyaluronic acid. The hydrogel composition provided in this application addresses the problems in related technologies that rely on tissue flaps or prostheses for repair, such as large trauma, easy foreign body reaction, asymmetrical shape, unnatural feel, and the inability of tissue engineering materials to be rapidly molded intraoperatively, requiring secondary surgery.

The invention discloses a treatment fixing device for rib fracture, and belongs to the technical field of medical instruments. The device comprises a surrounding claw, the surrounding claw is composed of grasping parts, a top face and a locking part, and the two grasping parts are symmetrically arranged at the front end and the rear end of the top face and jointly form a grasping space used for fixing a fracture part; a locking belt of the locking part is clamped with a buckle on the top face through meshing teeth, and anti-reverse teeth in the buckle ensure stable locking. One or more embracing claws connected through the connecting parts can be selected according to the fracture condition, the whole embracing claw is made of absorbable materials, and the grasping force is enhanced through the threaded structures of the top faces and the inner surfaces of the connecting parts. The fixing device is good in fixing effect and suitable for different fracture scenes, secondary surgery is avoided due to the degradable characteristic, and the problems that in the prior art, a fixing device is poor in adaptability, foreign matter is left and the like are effectively solved.

The invention provides a degradable spring ring for a female fallopian tube. The degradable spring ring is used for temporary plugging of the fallopian tube in gynecological inflammation treatment and assisted reproduction technologies. The spring ring is made of degradable materials, fibrous protrusions extend on the outer surface of the spring ring, and the spring ring is sequentially coated with an antibacterial medicine coating and a developing coating, so that anti-infection and intraoperative visualization functions are achieved. According to clinical requirements, the first class is divided into two classes: the degradation period is about 3 months, and a PLGA 50: 50 material is adopted and is suitable for preventing reflux of inflammatory media in the fallopian tube inflammation treatment period; the degradation period of the second type is about 2 years, the second type comprises three structures which are PLGA 85: 15, an AZ31 magnesium alloy skeleton or a magnesium alloy / PLGA composite structure, and the long-term plugging requirement in the test tube operation is met. The degradation rate is regulated and controlled through the material ratio, the functional coating and the structural design are combined, biocompatibility, operation safety and clinical adaptability are achieved, secondary operation taking-out can be avoided, and the gynecological diagnosis and treatment effect is remarkably improved.

This invention discloses a powder composition for the prevention and treatment of symblepharon (eyelid-eye-ball adhesion). The powder composition comprises a polymer material that cross-links with each other upon contact with an aqueous medium, forming a hydrogel isolation membrane in situ at the wound surface. This invention also discloses the application of the above-mentioned powder composition in the preparation of medicaments for the prevention and / or treatment of symblepharon. The powder composition provided by this invention, when applied to ocular surface wounds, rapidly forms a physical isolation layer in situ. This formed physical isolation layer exhibits good stability and can be gradually and gently degraded without the need for secondary surgical removal.

The invention relates to a biomechanical experiment method of a novel magnesium controlled-release dynamic intramedullary nail, which comprises an intramedullary nail, a nail-withdrawing-preventing bolt, a material exchange hole and a gasket, the surface of the intramedullary nail is provided with an upper hole and a lower hole, the upper hole is the nail-withdrawing-preventing bolt, the lower hole is the material exchange hole, the gasket is embedded in the middle of the surface of the intramedullary nail, and the gasket is embedded in the middle of the surface of the intramedullary nail. A magnesium controlled release-dynamic compression coupling mechanism is provided for the first time, and a degradable material technology is combined with an orthopedic internal fixation dynamic idea; the magnesium alloy gasket structure is innovatively designed, automatic power compression of the intramedullary nail is achieved, and the intramedullary nail is powered without a secondary operation; innovative application of the magnesium alloy in large orthopedic implants is created, and the application field of degradable materials is expanded.

The application discloses an intelligent oral cavity barrier film, a monitoring system and a method for bone combination state. The intelligent oral cavity barrier film comprises: a degradable metal layer configured to include an inductor coil, a first plate of a capacitor, and a porous support area integrally connected with the inductor coil; a dielectric polymer layer; a second plate of the capacitor separated from the first plate by the dielectric polymer layer; the inductor coil, the first plate of the capacitor, the second plate of the capacitor and the porous support area are integrally formed by laser cutting from a whole piece of the degradable metal layer; wherein the inductor coil, the first plate, the dielectric polymer layer and the second plate jointly constitute a passive LC resonance circuit; the quality factor Q of the LC resonance circuit is configured to change in response to the change of ion concentration in the environment around the dielectric polymer layer, and the bone combination state can be wirelessly monitored by an in-vitro reading device. The application has mechanical support and complete degradability, and reduces the risk of secondary surgery.

The invention relates to a degradable drug sustained-release intrauterine anti-adhesion stent and a preparation method thereof, and belongs to the technical field of medical instruments, the degradable drug sustained-release intrauterine anti-adhesion stent comprises a drug-loading core layer, a sustained-release barrier layer and an antibacterial coating, the drug-loading core layer is formed by compounding a degradable high polymer material and estrogen, the degradable high polymer material is PLGA, the estrogen is 17beta-estradiol, and the sustained-release barrier layer is an anti-bacterial coating. And the loading capacity of the estrogen is 1-10wt% of the total weight of the According to the invention, the anti-adhesion purpose is achieved by physically isolating the uterine cavity wall, the regeneration of the intima is promoted in an estrogen slow release manner, the active repair effect is achieved, the PHMB coating is arranged to inhibit bacteria, and the infection prevention effect is achieved; the clinical pain points that a traditional uterine cavity anti-adhesion support needs to be taken out through a secondary operation, has no active repairing function and has the infection risk and medicine depends on systemic administration are solved in a three-in-one mode of anti-adhesion, repair promoting and anti-infection.

The invention relates to the technical field of medical apparatuses and instruments, in particular to an internal flow turning degradable ring latex sleeve for preventing anastomotic fistula after a low rectal cancer operation. Due to the special anatomical position of a low rectal cancer operation, the occurrence rate of postoperative anastomotic fistula is high, and prophylactic stoma can effectively reduce the occurrence rate of anastomotic fistula, but secondary operation is needed for stoma reduction. Therefore, a medical instrument which is safe, effective, easy and convenient to operate and capable of reducing rectal cancer postoperative anastomotic fistula from the physiological level needs to be researched and developed. Through the unique structural design and working principle of the degradable ring latex sleeve, internal turning of intestinal contents is achieved within a period of time after an operation, pressure and pollution at an anastomotic stoma are reduced, meanwhile, by means of the characteristics of degradable materials, secondary taking-out operation is avoided, and the degradable ring latex sleeve is soft in texture, can adapt to the contraction and closing state of muscles near the anorectal ring, and has a good application prospect. Healing of the anastomotic stoma is promoted, and the occurrence risk of anastomotic fistula is reduced.

The present application relates to the technical field of cardiac pacing electrode, in particular to a telescopic cardiac pacing electrode, which comprises a pulse pacemaker and an electrode lead, the electrode lead comprises an insertion end, a connecting sleeve, a conductive core wire and an electrode end, the insertion end, the connecting sleeve and the electrode end are sequentially fixedly connected, the insertion end is insertedly matched with the pulse pacemaker, the connecting sleeve is internally provided with the conductive core wire, the two ends of the conductive core wire are respectively connected with the insertion end and the electrode end, and the pulse pacemaker generates a pulse electric signal which is transmitted to the inside of an organ through the electrode end; in the present application, the telescopic members and the fixing members are staggered in the subcutaneous section, the initial length is the shortest, the spacing of the fixing members anchored in the subcutaneous tissue is increased with the growth of the patient's trunk, the telescopic members are axially stretched, the length adjustment range covers the entire growth period from childhood to adulthood, the risk of electrode lead tightness, electrode displacement or breakage is fundamentally eliminated, and secondary surgery is avoided.

The invention discloses a personalized implantation structure and method for improving insufficient chin anterior movement in a chin shaping surgery, the personalized implantation structure comprises an implant and a chin anterior movement osteotomy matched with the implant, and the implant is fixed on the chin anterior movement osteotomy. Compared with the prior art, osteotomy forward movement and the implant are combined together to be applied to the chin forming operation, and when the chin bone mass of a patient is insufficient, supplementation can be conducted through the implant. Compared with an autogenous bone or an artificial bone for transplantation, the implant does not need to face the problems of absorption, rejection and the like, and the risk of a secondary operation cannot be increased; meanwhile, compared with the mode that the prosthesis is completely adopted for implantation, the burden of mandibular fibrous tissue can be relieved, and the risk of implant displacement can also be reduced.