198results about How to "Reduce bleeding" patented technology

The invention relates to the technical field of building materials, and particularly discloses high-strength lightweight concrete containing hollow glass beads and a preparation method of the high-strength lightweight concrete. The high-strength lightweight concrete containing the hollow glass beads is prepared from cement, fly ash, carbon fiber grafted hollow glass beads, lightweight sand, deionized water, polypropylene fiber grafted rubber particles and a water reducing agent according to the mass ratio of (58-75): (25-38): (45-65): (20-40): (42-55): (35-55): (5-12) through mixing, mold filling, vibration molding, covering and demolding. The addition amount of the hollow glass beads is strictly controlled, the influence on the overall strength of the concrete is avoided, the density and weight of the concrete are reduced due to the addition of the light sand and the hollow glass beads, the compactness and integrity of the concrete are improved due to the synergistic effect of the two added fibers, and the raw materials have excellent cohesiveness; the concrete can effectively absorb and disperse stress, and has the advantages of excellent strength, light weight, good durability and excellent comprehensive performance.

The invention relates to a composite hydrogel dressing for promoting wound healing as well as preparation and application thereof, and belongs to the technical field of biological medicines. The hydrogel disclosed by the invention is prepared by mixing gelatin, oxidized dextran and metal ion modified metal-organic framework compounds (MOF-Ag and MOF-Cu). In the mixed solution, amino groups in the gelatin and aldehyde groups of the oxidized dextran are subjected to a Schiff base cross-linking reaction, and the composite hydrogel is formed after standing. The loaded MOF-Ag has antibacterial and anti-biofilm effects on staphylococcus aureus and escherichia coli, and the loaded MOF-Cu has similar superoxide dismutase activity and similar glutathione peroxidase activity, so that excessive active oxygen can be removed, and inflammatory response can be relieved. The obtained hydrogel has good biocompatibility, proper mechanical properties and biological adhesion, stable rheological properties, excellent antibacterial and anti-inflammatory functions and a certain hemostatic function.

The invention provides a photoacoustic microimaging brain electrode implantation site and path planning method and system, and the method comprises the steps: an image extraction step: employing a brain blood vessel enhanced extraction algorithm to extract an input photoacoustic microscanning imaging result, and obtaining brain blood vessel information; the cerebrovascular information comprises two-dimensional image information and a three-dimensional reconstruction result of the cerebrovascular; and an implantation site and path acquisition step: processing the cerebrovascular information by using a brain electrode implantation site path planning algorithm to obtain an implantation site on the two-dimensional image and an implantation path in the three-dimensional structure. According to the invention, the brain blood vessel enhanced extraction algorithm is adopted, so that the problems of high photoacoustic scanning imaging noise and poor imaging quality are solved, and accurate extraction and three-dimensional reconstruction of the brain blood vessel are realized.

The invention belongs to the technical field of biological materials, and particularly discloses a blood vessel biological patch and preparation thereof, the blood vessel biological patch has the maximum tensile elongation of 20.1-35.1%, the elastic deformation rate of 15.1-29.4%, the value of the elastic deformation rate accounting for the maximum tensile elongation is 54-90%, and the bursting strength is 38-55N. The blood vessel biological patch provided by the invention can effectively reduce bleeding at the suture after carotid endarterectomy and prevent the problem of unstable performance of the biological patch.

The invention discloses low-carbon flow-state solidified soil for a seasonal frozen region. The low-carbon flow-state solidified soil comprises soil, a curing agent and water, the dosage of the curing agent is 15-20% of the mass of the dry soil; the water content is 40-60% of the dry mass of the soil and the curing agent; the soil comprises sludge and building residue soil, and the sludge accounts for 20-40 parts by weight, and the building residue soil accounts for 60-80 parts by weight; the curing agent is prepared from the following components in parts by weight: 40 to 60 parts of phosphogypsum, 10 to 15 parts of mixing plant waste slurry, 20 to 40 parts of steel slag, 5 to 10 parts of quick lime, 0.5 to 1.2 parts of glycerol, 0.2 to 0.6 part of hydroxypropyl methyl cellulose and 1 to 1.5 parts of water reducing agent; according to the invention, various technical problems of insufficient anti-freezing performance, unstable fluidity, long setting time, insufficient early strength, large shrinkage deformation, easy generation of segregation and bleeding and the like of the existing fluid-state solidified soil are solved, and meanwhile, more low-carbon environment-friendly raw materials are introduced, so that multi-aspect improvement of the performance of the fluid-state solidified soil and maximization of environment-friendly benefits are realized; and a more reliable and efficient solution is provided for earthwork such as foundation pit backfilling.

The utility model provides a posterior cruciate ligament stopping point fracture fixing device which comprises a fixing steel plate, a threaded sleeve and a fixing screw, and a traction hole for a first traction line to penetrate through is formed in one corner of the fixing steel plate; one end of the threaded sleeve is rotatably arranged in the middle of the fixed steel plate, the other end of the threaded sleeve is provided with a threaded hole, and the bottom of the threaded hole is connected with a second pull wire; the fixing screw is in threaded fit with the threaded hole in the threaded sleeve, and the center of the fixing screw is provided with a threading hole for the second pull wire to penetrate through. The device can be implanted under arthroscope micro-creation, and has the advantages of small trauma and less bleeding compared with the traditional open implantation; meanwhile, compared with a loop-shaped steel plate, the bone block is fixed through the pulling force of the screw, the force is larger and more stable, and healing of posterior cruciate ligament dead point avulsion fracture is facilitated; the device is simple in overall structure, low in manufacturing cost, stable in structure and high in popularization value.

The invention discloses concrete with high salt corrosion resistance and a preparation method of the concrete. The concrete is prepared from 300-400 kg / m < 3 > of cement, 50-150 kg / m < 3 > of slag powder, 1000-1200 kg / m < 3 > of gravel, 650-800 kg / m < 3 > of machine-made sand, 0.5-2 kg / m < 3 > of a modified polycarboxylic acid water reducing agent, 0.005-0.01 kg / m < 3 > of an air entraining agent, 0.05-0.1 kg / m < 3 > of an ion chelating agent, 0.05-0.1 kg / m < 3 > of polyacrylamide, 0.01-0.05 kg / m < 3 > of sodium methyl silicate, 0.1-0.5 kg / m < 3 > of multiwalled carbon nanotube dispersion liquid and 140-160 kg / m < 3 > of water. The preparation method comprises the following steps: stirring and mixing the modified polycarboxylate superplasticizer, the air entraining agent, the ion chelating agent, the polyacrylamide, the sodium methyl silicate and part of the water for mixing to obtain an admixture mixed solution; sequentially putting broken stones, cement, machine-made sand, the admixture mixed solution, the multi-walled carbon nanotube dispersion liquid and the rest of mixing water into a stirrer, and stirring for 2-3 minutes, so as to obtain the concrete with high salt corrosion resistance. The concrete has high salt corrosion resistance in a complex service environment, the service life of a concrete structure is effectively prolonged, and a reliable guarantee is provided for infrastructure construction.

The invention discloses a preparation method and application of a marine high-molecular polysaccharide hydrogel wound dressing. The hydrogel is formed by cross-linking the marine polysaccharide composition and the cross-linking agent, and the gelation time is short and is about 15 seconds; pores are uniform and moderate; the self-healing property, the adhesion property and the swelling property are high; the antibacterial effect is strong, and the inhibition rates on escherichia coli and staphylococcus aureus are both higher than 90%; skin irritation and skin allergy are avoided, and the biological safety is high; hemostasis can be rapidly carried out within 10s, and the bleeding amount is obviously reduced; the hydrogel dressing can rapidly shrink and scab a wound surface, has the effect of promoting wound healing, and has the effects of stopping bleeding and promoting wound healing which are obviously superior to those of commercially available hydrogel dressings (German Hydrosorb Gel) (Plt; 0.05), and is a safe and effective high-performance wound dressing. In addition, the hydrogel is simple in formula and high in industrialization prospect, is expected to be developed into novel wound dressings and medical instruments, and breaks through the trapping that domestic hydrogel dressings are mostly dependent on import.

The invention relates to the field of concrete, and particularly discloses self-compacting concrete and a preparation method thereof. The self-compacting concrete comprises the following raw materials in parts by weight: 320-370 parts of cement; 800 to 840 parts of coarse aggregate; 750 to 780 parts of fine aggregate; 12 to 19 parts of a fiber composition; 55 to 70 parts of fly ash; 20-35 parts of steel slag powder; 1-3 parts of a water reducing agent; 140 to 175 parts of water; 8-14 parts of an expanding agent; the fiber composition is hybrid fibers of steel fibers and sisal fibers, and the weight ratio of the steel fibers to the sisal fibers is (9-13): (3-6). The self-compacting concrete has the effects of inhibiting self-constriction and plastic constriction of the self-compacting concrete, reducing generation of harmful cracks and improving the strength and impermeability of the self-compacting concrete.

The invention discloses a plasma tissue dissociation knife, and relates to the technical field of medical instruments. In order to solve the problems that when an existing endoscopic surgery relates to a plurality of instruments, the instruments need to be frequently switched for surgical operation, and the surgical efficiency is reduced, the following technical scheme is provided: the endoscopic surgical instrument comprises a tool bit, a tool bar, a handle and a cable which are connected in sequence; the cutter head comprises a blade telescopic assembly arranged on the head portion, an endoscope guide tube and a cutter head telescopic control mechanism are arranged in the handle, and the cutter head telescopic control mechanism drives a blade in the blade telescopic assembly to stretch out and draw back through a transmission piece. The positive cable extends to the tool bit to be connected with the blade telescopic assembly, the negative steel pipe is connected with the negative cable, and double-frequency emitter cutting is formed at the blade; the suction channel arranged in the cutter bar is used for flushing the surgical field and sucking turbid liquid in the operation. Compared with a traditional cold instrument, cutting efficiency, bleeding amount control, clear surgical field, cutter bar size optimization, cutting flexibility, sealing performance, operation convenience and the like are remarkably improved.

The invention discloses an early-strength polycarboxylate superplasticizer with thickening and water-retaining properties and a preparation method thereof, and relates to the technical field of building materials. The early-strength polycarboxylate superplasticizer is prepared from the following components in parts by weight through free radical copolymerization and condensation polymerization: 360 parts of polyether monomer, 20-40 parts of unsaturated carboxylic acid, 0.1-0.5 part of hydrophobic monomer, 1-30 parts of functional additive, 0.5-3 parts of oxidant, 0.1-1 part of reducing agent, 0.5-2 parts of chain transfer agent and 270-460 parts of water. The invention also provides a preparation method of the water reducing agent. By adjusting the structure of the polycarboxylic acid water reducing agent and grafting functional groups with bonding capacity and early strength function, the water reducing agent which is good in application performance and high in water reducing rate is prepared, and the water reducing agent can remarkably improve the wrapping property of concrete, reduce the bleeding property of the concrete and improve the early strength of the concrete.

The invention relates to the field of hemostasis, in particular to an emergency surgery compression type hemostasis device which comprises a support, a supporting plate is fixedly connected to the top end of the support, a screwing rod is fixedly connected to one end of a first threaded rod, a connecting shaft is slidably connected to the other end of the first threaded rod in an embedded mode, and a hemostasis plate is fixedly connected to the bottom end of the connecting shaft. The bottom end of the hemostasis plate is of an arc-shaped structure, an air bag is fixedly connected to the bottom end of the hemostasis plate, gathering assemblies are symmetrically installed on the side wall of the hemostasis plate, a cold compress assembly is installed on the side wall of the air bag, and a connecting assembly is installed between a first threaded rod and the hemostasis plate. According to the compression hemostasis device, the connecting assembly is arranged, and the first wedge-shaped block and the second wedge-shaped block are matched with each other, so that the moving position distance of the hemostasis plate is consistent, the pressure is consistent, the problem that the pressure is inconsistent during compression hemostasis is avoided, compression hemostasis operation is facilitated, and the practicability of the device is improved.

The invention provides a predelivery auxiliary exercise device which comprises a flexible pad, a shell is arranged at the end of the flexible pad, a mounting rod is rotatably arranged on the shell, a first sleeve is slidably mounted on the mounting rod, a supporting frame is hinged to the first sleeve, a leg support is hinged to the end of the supporting frame, and a slidable and rotatable mounting wheel is arranged in the shell. The first sleeve is sleeved with a connecting ring, a driving rope is arranged on the connecting ring, the end of the driving rope bypasses the mounting wheel and is connected with the shell, a resistance unit connected with the shell is arranged on the mounting wheel, a linkage assembly connected with the driving rope is arranged at the end of the mounting rod, and the driving rope is pulled through the linkage assembly when the mounting rod rotates. By means of the device, leg muscles and crotch muscles can be fully exercised, so that discomfort in the pregnancy period is reduced, the elasticity of pelvic cavity and birth canal muscles is increased, pain in the production process is relieved, the time of the production process is shortened, and meanwhile laceration and bleeding of the birth canal can be reduced.

The invention discloses a flexible and stable three-layer porous structure hemostatic dressing and a preparation method thereof, and belongs to the technical field of biological medicine. The preparation method of the hemostatic dressing comprises the following steps: constructing a stable foaming system by using protein and polysaccharide, constructing a dual three-dimensional network by combining multi-source polysaccharide and tannic acid, and designing a large-area dressing structure by overlapping the dual three-dimensional network with cotton gauze; carrying out Ca < 2 + > cross-linking impregnation and freeze drying in a weak acid environment to prepare an integrally formed three-layer dual-network multi-source porous structure dressing; the dressing has three layers of different structures, has an extremely fast hemostatic effect, reduces the amount of bleeding, can effectively maintain the humidity of a wound, avoids invasion and infection of bacteria, and can quickly and effectively sterilize; good shape maintaining and recovering capability is realized; meanwhile, the advantages of the porous structure and the cotton gauze are integrated, the structure is enriched, the structural stability of the large-area dressing is improved, the dressing can be stored for a long time in a normal-temperature environment, and the physical basic performance of the dressing meets the requirements of medical dressings.

The invention discloses a myocardial rotary cutting system with an inverted puncture needle. The myocardial rotary cutting system comprises a shell, and a rotary cutting device assembly and a negative pressure device assembly are arranged in the shell; the rotary cutting device assembly extends out of the shell, and an inner cavity of the rotary cutting device assembly communicates with an inner cavity of the shell. The side face, away from the shell, of the rotary cutting device assembly is provided with an excision window and a tissue storage chamber, the excision window communicates with an inner cavity of the rotary cutting device assembly, a rotary cutting pipe is arranged in the rotary cutting device assembly, one end of the rotary cutting pipe is connected with a first bevel gear, and a rotary cutting blade is formed at the other end of the rotary cutting pipe. The rotary cutting blade can form continuous axial cutting action relative to the cutting window based on axial rotation; when the rotary cutting pipe shields the cutting window, the cutting window is in a closed state; a puncture needle is arranged in the rotary cutting pipe, and a boss-shaped barb structure is arranged on the puncture needle in a sleeving manner; according to the invention, in a minimally invasive incision state, tissue locking, continuous mechanical rotary cutting and accurate cardiac muscle tissue excision can be realized.

The invention belongs to the technical field of medical instruments, and particularly relates to an atherosclerosis resection device which comprises a puncture cannula, a shell is in threaded connection with the interior of the puncture cannula, a connecting pipe A is fixedly connected to one end of the shell, and a hole fixedly connected with the cannula is formed in the outer surface of the connecting pipe A; the interior of the sleeve is in threaded connection with a collecting component, and one end of the connecting pipe A is fixedly connected with a connecting pipe B; by means of the collecting component arranged in cooperation with the structure, after the artery plaque is cut up, the artery plaque needs to be removed from the blood vessel, after being removed, the artery plaque is placed in the collecting component, and assemblies in the collecting component can filter the artery plaque and conduct dry-wet separation; the separated artery plaque can be subjected to more detailed pathological and biochemical analysis, composition and characteristics of the plaque can be known, and damage to surrounding tissues in the operation process can be reduced by grinding the plaque and collecting the plaque in a sealed mode.

The invention relates to vacuum auxiliary equipment for filling concrete, the auxiliary equipment is used for auxiliary processing of a spiral cavity steel pipe filled with the concrete, the auxiliary equipment is located at the other end, deviating from filling equipment, of the steel pipe, and the auxiliary equipment comprises a pipeline assembly and a vacuum pump assembly, comprising a vacuum tube communicated between the outside and the spiral cavity, and one end of the vacuum tube is connected to the exhaust and drainage port; and the vacuum pump is connected with the other end, far away from the gas and water discharging opening, of the vacuum pipe, and the vacuum pump is used for discharging gas in the spiral cavity. The auxiliary equipment and the concrete conveying device are installed at the two ends of the steel pipe body respectively, mutual interference between the auxiliary equipment and the concrete conveying device is avoided through the layout design, and in the vacuum auxiliary filling process, the removal efficiency of bubbles and water in concrete is remarkably improved through the negative pressure effect; the negative effects of bubbles and water seepage on the strength and durability of the concrete structure are reduced.

The invention provides a mining low-bleeding self-reinforced solid waste filling material as well as a preparation method and application thereof. The mining low-bleeding self-reinforced solid waste filling material is prepared from the following raw material components: 340 to 480 parts of weathered coal gangue, 20 to 25 parts of cement, 30 to 40 parts of fly ash, 30 to 40 parts of slag powder, 0.3 to 0.7 part of sodium silicate, 5 to 7 parts of quick lime, 3 to 5 parts of magnesium oxide, 0.05 to 0.1 part of water-absorbent resin, 0.2 to 0.4 part of fiber and 160 to 245 parts of water. The slump of the filling material is 24-27 cm, the bleeding rate is smaller than 1%, the compressive strength of the filling material in 3 days is 1-2 MPa, the compressive strength of the filling material in 28 days is 3-6 MPa, and the drying shrinkage is-20-0 mm / m. The main solid raw materials used in the method are solid wastes, the purposes of stable filling material structure, low bleeding rate, self-strengthening in the curing process and the like are achieved by utilizing the characteristic and function synergy of various solid wastes, the mine filling production cost can be effectively saved, the resource treatment of bulk solid wastes in the mining industry field is realized, and the economic benefit is increased. Geological disaster and environmental pollution risks of mining areas are reduced, ecological management cost is reduced, economic benefits are created for mines, and meanwhile green and low-carbon development of the mining industry is promoted.

The present invention discloses an electrode implantation surgical robot, comprising a control terminal and a first mechanical arm, a first end actuator, a second mechanical arm and a second end actuator connected to the control terminal; the end of the first mechanical arm is connected to the first end actuator, and the end of the second mechanical arm is connected to the second end actuator; the control terminal comprises: a positioning module for determining the target position and target depth required for electrode implantation; a first control module for moving the first end actuator to the target position driven by the first mechanical arm, drilling at the target position according to the target depth, and stopping drilling and triggering the second control module when the drilling end condition is met; a second control module for moving the second end actuator to the target position driven by the second mechanical arm, and implanting the electrode at the target position. The present invention realizes one-touch fully automatic operation and full-process aseptic operation of electrode implantation, and has high implantation accuracy.

The utility model relates to the field of medical instruments, in particular to a thighbone drilling guider and a unicondylar femoral extramedullary positioning device. A guiding body of the thighbone drilling guider is used for abutting against the far end of a thighbone condyle, a first through hole and a second through hole are formed in the guiding body in the first preset direction, and the first through hole and the second through hole are both used for positioning marking lines of the center position of the thighbone condyle. At least one of the first abutting part and the second abutting part is movably connected with the guiding body in the second preset direction. The first propping part and the second propping part are respectively used for propping against the posterior condyle of the femur and the osteotomy surface of the tibia; wherein the first preset direction is perpendicular to the second preset direction. The femur drilling guider is applied to a single-condyle femur extramedullary positioning device, is used for positioning outside femur marrow, can effectively reduce intramedullary hemorrhage, reduces the blood loss amount and the blood transfusion rate of an operation, and meanwhile reduces the occurrence rate of deep venous thrombosis, pulmonary embolism and cerebral embolism in and after the operation.

The application relates to the photovoltaic technical field, in particular to a solar printing screen structure, a fusing equipment thereof and a processing method, which comprise an electrode pattern, a main grid pattern line, a warp and a weft, the warp and the weft are woven to form a printing screen, a mesh hole is formed between two adjacent warps and two adjacent wefts, the warp is parallel to the main grid pattern line, the main grid pattern line is symmetrically arranged on the two sides of the electrode pattern, a main grid pad point is located in the electrode pattern, and the part of the warp in the coverage range of the electrode pattern is subjected to fusing treatment outside the coverage range of the electrode pattern. The application has the effects of improving the wear resistance of the printing screen and improving the conversion efficiency of the battery.

The invention provides application of adrenochromic hydrazone in preparation of a medicine for treating subdural hematoma, and belongs to the technical field of medicines. The invention finds that the adrenochrome can improve the expression level of endothelial connexin of epidural blood vessels, enhance the resistance of blood capillaries to injury, reduce the permeability of the blood capillaries, reduce the bleeding amount of subdural hematoma, relieve inflammatory response caused by hematoma stimulation and accelerate the recovery of subdural hematoma for the first time. Therefore, the compound can be used for preparing medicines for treating subdural hematoma. The medicine can be administrated through oral administration, the risk existing in a traditional drilling drainage operation is avoided, and an alternative or auxiliary treatment scheme is provided for patients who are intolerant to statins or hormones and patients who are ineffective in treatment through combination of statins and hormones.

The present invention discloses a video cable external ventilation catheter, comprising a bronchial catheter or a tracheal catheter, a video cable and a video catheter connecting mechanism. The video catheter connecting mechanism is provided with a video connecting mechanism that can temporarily lock the position of the rear section of the video cable. By loosening the video catheter connecting mechanism, the tail of the video cable can be manipulated to make the video cable move forward, backward or rotate independently. The video catheter connecting mechanism is also provided with a catheter connecting mechanism and a ventilation catheter (bronchial catheter or tracheal catheter) that is movably connected, which can temporarily lock the position of a correctly assembled ventilation catheter. By loosening the catheter connecting mechanism, the video catheter connecting mechanism can be manipulated to separate from the ventilation catheter. The video cable external ventilation catheter provided by the present invention can make full use of the space in the patient's trachea, reduce the occupation of the ventilation cavity by the video cable, reduce the airway pressure of ventilation, can adjust the video cable to inspect and position at different depths in the airway, has a simple structure and wide applicability.

The invention discloses a solid-waste-based mine filling material as well as a preparation method and a use method thereof, and relates to the field of mine filling. The solid waste-based mine filling material comprises the following components in percentage by weight: 20-50% of tailings, 10-30% of slag, 10-30% of modified fly ash, 5-15% of phosphogypsum, 5-10% of sodium carbonate, 5-10% of cement and 1-10% of a foaming agent. Wherein a copolymer of PVA, polyacrylate or vinyl acetate and acrylate is formed on the surface of the modified fly ash. By implementing the method disclosed by the invention, bleeding of the solid-waste-based mine filling material can be greatly reduced, free adjustment of the density of the solid-waste-based mine filling material can be realized, and the consumption of cement and other components is reduced. Meanwhile, the dry shrinkage resistance and the freezing and thawing resistance of a filling body formed by the solid waste-based mine filling material are also improved.

The invention relates to the technical field of building admixtures, in particular to an anti-mud foam-stabilizing slump retaining material and a preparation method thereof. The preparation method comprises the following steps: dropwise adding a comonomer mixture solution, an initiator aqueous solution and a molecular weight regulator aqueous solution into a reaction kettle filled with water, stirring and reacting at the reaction temperature of 5-80 DEG C for 1.0-2.0 hours, continuously reacting for 0.5-2.0 hours after dropwise adding to obtain a copolymerization product, and regulating the pH value to 5-7 by using alkali to obtain the anti-mud foam-stabilizing slump retaining material, the prepared slump retaining material is excellent in slump retaining performance, has a very good air entraining effect, is more stable in bubbling when being applied to concrete, can further improve the lubricating effect of particles in multiple systems of the concrete, endows the concrete with an excellent anti-mud function, can reduce concrete segregation and bleeding, has an early strength effect, and has a good anti-mud effect. Even in the harsh process of stirring, long-distance transportation, frequent loading and unloading and even final pouring of concrete, bubbles can still keep the integrity and do not crack or overflow.

This utility model relates to the field of medical device technology and discloses a dressing change kit for infants and young children with persistent seepage at deep vein catheter insertion sites. The kit includes a dressing bag, an inner wall with a sterilization pack, a skin protective dressing, an exposed catheter patch, and a sterile gauze sleeve. Elastic strips are fixedly connected to both the front and back sides of the sterile gauze sleeve. A hemostatic component for the puncture site and continuous bleeding is provided on the inner wall of the dressing bag. This hemostatic component includes a stretchable adhesive tape, the outer side of which is placed on the inner wall of the dressing bag. A pressable circular plate is fixedly connected to the bottom of the stretchable adhesive tape. In this utility model, the operator passes the catheter through the skin protective dressing, the exposed catheter patch wraps around the dialysis catheter, and then the dialysis catheter is inserted into the sterile gauze sleeve, thus securing the dialysis catheter and achieving fixation of the catheter, which cannot be cut.

The invention belongs to the technical field of medical equipment, and particularly relates to a skin grafting packaging stitching instrument in surgical operation, which comprises a fresh skin grafting fixing sheet, a transplantation receiving area positioning sheet and a stitching belt, a first connecting piece is arranged at the upper part of the fresh skin grafting fixing sheet, and the fresh skin grafting fixing sheet covers and fixes fresh skin grafting; a first connecting piece is arranged at the upper part of the transplantation recipient area positioning piece, a second connecting piece is arranged at the upper part of the transplantation recipient area positioning piece, the transplantation recipient area positioning piece is positioned near a recipient area, and the sewing belt is used for sewing and fixing the fresh grafted skin near the recipient area through the first connecting piece and the second connecting piece. The method is simple and rapid to operate, short in operation time, small in bleeding amount, small in wound and destructive effect on fresh skin grafting and recipient tissue, low in infection rate, safe and sanitary, and the skin is easy to survive.

The invention relates to a prepuce anastomat. The prepuce anastomat comprises a shell; the nail abutting seat is detachably connected to the shell. The cutting structure is used for cutting the prepuce to be cut; the nail pushing assembly and the cutting structure are both located in the shell and arranged on the nail abutting base in a sleeving mode. The limiting assembly is rotatably connected to the shell; the percussion assembly is rotationally connected to the shell and can drive the nail pushing assembly and the cutting structure to move in the first direction. The prepuce anastomat is divided into two independent times of percussion, namely, the first-time percussion and the second-time percussion, the prepuce can be sutured through the first-time percussion, the prepuce can be cut through the second-time percussion, and the bleeding amount in the prepuce cutting process can be reduced through the mode that the prepuce is sutured first and then cut; in addition, after the first-time percussion is completed, the limiting assembly is used for stopping the nail pushing assembly from moving, the forming effect of the suturing nails can be guaranteed, and the hand fatigue condition of an operator can be relieved.

The utility model relates to an adjustable prone position pad special for spine surgery. The adjustable prone position pad comprises a shoulder and chest pad and an iliac pad. The shoulder and chest pad is H-shaped; the iliac cushion comprises a bottom plate and two cushion blocks, and further comprises two sets of lifting mechanisms driving the two cushion blocks to ascend and descend relative to the bottom plate, and two sets of left-right translation mechanisms driving the two cushion blocks to translate left and right relative to the bottom plate. And the two cushion blocks are outwards splayed towards the head side. The structure of the shoulder and chest pad is optimized, so that the shoulder and chest pad conforms to the human body structure, and a female patient feels comfortable even when using the shoulder and chest pad; the structure of the iliac pad is optimized, on one hand, the iliac pad is of an integrated structure instead of a split structure, convenient to use and not prone to displacement, and on the other hand, the iliac pad has three degrees of freedom of rotation, up-down translation and left-right translation, can be flexibly adjusted according to different body types, is suitable for all people, has high universality and can ensure that the abdomen is completely suspended; the device plays a great role in reducing bleeding in the minimally invasive spine surgery, and belongs to the technical field of spine surgery auxiliary equipment.

The present application relates to a kind of anastomosis equipment.The anastomosis equipment includes repair assembly and anastomat;Repair assembly includes at least one patch, various the patch is respectively used for different operation;Anastomat includes shaft assembly, anvil and nail bin, anvil and nail bin are connected to shaft assembly, anvil and nail bin can be relatively closed, various patch is used to install in anvil or nail bin, anvil and nail bin are configured to operate to anastomosis position, and patch is applied to corresponding anastomosis to achieve occlusion and reinforcement by operation.This application at least one patch, so as to cooperate with anvil and nail bin, so that various patch is adhered to corresponding anastomosis under its corresponding operation, so as to reduce the proportion of stomal fistula and bleeding at incision, improve the reliability and adaptability of anastomosis equipment.