31results about How to "Avoid bleeding" patented technology

An aqueous ultraviolet-absorbing resin emulsion, and an aqueous resin emulsion composition containing the emulsion is provided, wherein the emulsion is excellent in compatibility with a synthetic resin and light resistance. Also, the emulsion improves stability in blending with an aqueous emulsion of the synthetic resin, and prevents bleed out of the ultraviolet-absorbing resin on the surface of a coating film. Further, the aqueous ultraviolet-absorbing resin emulsion imparts excellent alkali or solvent resistance to a synthetic resin poor in alkali or solvent resistance. More specifically, an aqueous resin emulsion composition comprising (I) an aqueous ultraviolet-absorbing resin emulsion and (II) an other aqueous resin emulsion is provided, wherein the emulsion (I) is obtained by urethanizing (A) a polyol component having an ultraviolet-absorbing group {e.g., 1,1-bis[3-(2H-benzotriazol-2-yl)-4-hydroxy-benzeneethanol]methane}, (B) a polyol if necessary, (C) an alkyl or aryl dialkanolamine compound, and (D) an organic polyisocyanate in (E) an organic solvent, diluting the reaction mixture with (F) an organic solvent having a boiling point lower than 100° C. to give a resin solution, neutralizing the resin solution with (G) a neutralizing agent, and dispersing the resultant in water.

This invention provides a fiber-based biomimetic polyurethane artificial blood vessel and its preparation method. The method involves using wet spinning technology to obtain filaments, which are then drawn and wound onto the surface of a metal tube to form a polyurethane fiber inner layer. A fabric middle layer is woven onto the surface of the polyurethane fiber inner layer. An organic solvent is sprayed onto the surface of the fabric middle layer, and an outer polyurethane fiber layer is prepared on the fabric surface using electrospinning technology. Finally, after curing and demolding, the fiber-based biomimetic polyurethane artificial blood vessel is obtained. This invention combines wet spinning, weaving, and electrospinning technologies to achieve integrated preparation of polyurethane artificial blood vessels. The resulting artificial blood vessel is of high quality, with a tightly bonded three-layer fiber-based structure that maximally mimics the three-layer structure of natural blood vessels. The inner layer provides excellent compliance, the fabric layer increases the blood vessel's impermeability and sutureability, and the outer layer effectively prevents vascular delamination and promotes endothelialization. Furthermore, the preparation method is environmentally friendly and pollution-free, with a short process flow, making it suitable for continuous industrial production.

The invention discloses an ultrasonic blood sampling device and method and application in small animal blood sampling, and relates to the technical field of medical instruments and devices.The ultrasonic blood sampling device comprises an ultrasonic instrument matched with an ultrasonic probe for display, the ultrasonic instrument is arranged on one side of an experiment table, and a blood sampling assembly is fixedly installed on the experiment table and comprises an operation bin, a base and an operation table; the base and the operation table are vertically arranged in the operation bin side by side, a clamping plate is rotationally installed on the operation table through a connecting assembly, a clamping plate is fixedly installed on the clamping plate in a magnetic attraction mode, clamping grooves corresponding to four limbs of a blood sampling animal are formed in the clamping plate, and the connecting assembly is in a W shape. The blood sampling success rate can be increased, the position of the deep vein and the blood flow condition are observed in real time through the ultrasonic imaging technology, the blood sampling needle can be accurately guided to enter the blood vessel, and the blood sampling success rate is remarkably increased.

The invention belongs to the technical field of child infusion auxiliary equipment, and provides a waist stool for infant infusion, which comprises a lacing belt which is laced and fixed on an adult, a supporting mechanism which is arranged on the outer side of the lacing belt and is used for supporting an infant during infusion, and a lifting mechanism which is arranged above the lacing belt and is used for adjusting the infusion height; by arranging the supporting mechanism, the restraining working effect of the device on an infant is greatly improved, the infant can be better pacified, the waist stool main body, the anti-falling safety belt and the tightening protection belt are arranged in the supporting mechanism, better safety protection can be provided for the infant during tightening, and the safety of the infant is improved. Meanwhile, other activities of adults cannot be affected while the infants are pacified, the height of the hook can be conveniently adjusted through work cooperation of a movable lead screw and an adjuster arranged in the lifting mechanism, and due to the fact that the infants like to move freely, the safety of the infants is improved. And the phenomenon of blood return in the infusion process can be effectively prevented to a certain extent.

The application discloses a catheter protection device and relates to the technical field of medical devices, which comprises an arc-shaped plate, connecting round rods, magic tapes, soft wheels and a fixing assembly, the arc-shaped plate is fixedly connected with the symmetrically arranged connecting round rods, one of the symmetrically arranged connecting round rods is uniformly fixedly connected with the magic tapes, the magic tapes pass around the other connecting round rod, and the arc-shaped plate is uniformly and intervally rotationally connected with the soft wheels. The arc-shaped plate is fixed on the thigh of a patient by the magic tapes, and then the catheter is fixed by side pressing plates and a large pressing plate. In this way, the catheter does not need to be fixed by adhesive tapes, the patient can avoid allergic reactions to the glue of the adhesive tapes, the adhesive tapes can avoid falling off due to the body fluid of the patient, and thus the fixing effect on the catheter is affected.

This invention proposes a multi-degree-of-freedom gastrointestinal surgical robot system, belonging to the field of medical robot technology. It includes a platform with a pair of guide rails on its end face; a main arm drive device mounted on the platform, its output end connected to one end of the main arm to provide power to the main arm, which is hollow inside; a deployment mechanism mounted on the other end of the main arm away from the platform; two sub-arm drive devices respectively mounted on the platform and slidably connected to the guide rails; the output ends of the two sub-arm drive devices pass through the main arm and extend into the deployment mechanism to provide power to the deployment mechanism; the deployment mechanism includes a snake-bone tube and a force-sensitive elastomer clamping unit. The snake-bone tube includes several sequentially arranged rotary joints, adjacent rotary joints are hinged together, the interior of the first rotary joint communicates with a channel inside the main arm, and the last rotary joint is connected to the force-sensitive elastomer clamping unit. Clamping force and three-dimensional force sensing are achieved through inverse kinematics calculation.

The application belongs to the technical field of biological probes, and relates to a PD-L1 guided specific targeted CTC detection combined with tumor boundary distinguishing biological probe and a preparation method thereof. The PD-L1 guided specific targeted CTC detection combined with tumor boundary distinguishing biological probe comprises a core, a covalent organic framework and a PD-L1 antibody, the core comprises a superparamagnetic nanoparticle, the covalent organic framework is coated on the surface of the core, and the PD-L1 antibody is combined on the surface of the covalent organic framework. The PD-L1 guided specific targeted CTC detection combined with tumor boundary distinguishing biological probe prepared by the application can be transported into the body across the membrane, smoothly enter a PD-L1 positive malignant tumor lesion, and perform Raman imaging to microscopically distinguish the tumor boundary.

This invention discloses a waste recycling device for cable manufacturing injection molding, belonging to the field of intelligent manufacturing equipment technology. It includes a subcritical fluidized shear reactor, a gradient swelling pretreatment chamber, and a swelling accelerator connecting the subcritical fluidized shear reactor and the gradient swelling pretreatment chamber. By designing the gradient swelling pretreatment chamber as a series of first, second, and third swelling zones arranged sequentially in a clockwise direction, and coordinating with a rotating lifting mechanism consisting of a ring frame, track slide column, and hollow material cylinder in the steering conveyor, this invention achieves automatic and continuous immersion and lifting of waste materials between multiple temperature gradient zones, significantly improving swelling uniformity and cross-linking point breakage efficiency.

The utility model provides a hip and leg braking device which can be worn on the hip and the unilateral lower limb of a patient and comprises a hip fixator, a thigh fixator, a shank fixator and a supporting plate. The hip fixator is used for wrapping the hip of a patient, the thigh fixator is used for wrapping the thigh on one side of the patient, and the shank fixator is used for wrapping the shank on the side of the patient; the supporting plate penetrates through the hip fixator, the thigh fixator and the shank fixator, is located on the inner sides of the hip fixator, the thigh fixator and the shank fixator and is used for preventing the lower limbs of the patient from bending. According to the hip and leg braking device, the hip, the thighs and the shanks of a patient can be braked at the same time, so that the lower limbs of the patient are effectively prevented from bending, and the postoperative risk is reduced.

This invention discloses a positioning stent for convenient fixation and safe removal within human blood vessels, relating to the field of surgical medical device technology. The positioning stent comprises: a metal wire stent with multiple pointed positioning spikes, each spike including an inner metal wire and a covering layer; the inner metal wire is connected to the metal wire of the metal wire stent, the diameter of the inner metal wire being smaller than the diameter of the metal wire of the metal wire stent; the covering layer is conical and made of a biodegradable material; the tips of the inner metal wires and the tips of the covering layer are spaced a predetermined distance apart, and the middle portion of the inner metal wire forms a spiral portion; after the covering layer degrades, the spiral portion changes from a compressed state to an extended state, allowing the inner metal wire to pierce the blood vessel wall, with a predetermined gap between the blood vessel wall surface and the surface of the metal wire stent. This invention achieves reliable stent fixation and safe removal.

The application discloses a high-flow-state self-compacting grouting dry-mixed mortar and a preparation method thereof, and belongs to the technical field of building materials. The mortar comprises, in parts by weight, cementing material 350-450 parts, modified spherical steel slag sand microbeads 500-600 parts, water reducing agent 4-8 parts, plastic expansion agent 0.1-0.5 parts and defoaming agent 0.1-0.5 parts. The alkali-responsive ionized modified warm rubber is pre-anchored on the surface of the spherical steel slag sand through a chemical bond, the ball rolling effect during mixing is fully played, the anti-segregation effect during the standing period is fully played, and the automatic triggering under the alkali condition is realized. The application solves the problems that the flowability and the anti-segregation property of the existing grouting mortar are difficult to be considered, the anti-segregation agent is directly mixed to easily cause a large loss of the flowability, and the dispersion is uneven. The obtained mortar has an initial flowability of greater than or equal to 325 mm, a bleeding rate of zero and a 28d compressive strength of greater than or equal to 85 MPa.

This invention relates to the field of solid waste cementitious material preparation technology, specifically to a rapid-setting and hardening cementitious material based on calcium aluminoferrite from all solid waste and its preparation method, comprising the following steps: S1. Mixing and stirring modified red mud, carbide slag, mineral powder, and modified mineralizer evenly, and then pressing into shape; S2. Performing a first-stage calcination, calcining from room temperature to 950-1000℃, and then performing a second-stage calcination to 1220-1300℃ and holding at that temperature for 30-120 minutes, and cooling to room temperature to obtain modified mineral phase clinker; S3. Passing through a 200-mesh square hole sieve, mixing with modified multi-element solid waste mineral materials in a mixer, and stirring evenly to obtain the rapid-setting and hardening cementitious material based on calcium aluminoferrite from all solid waste. This invention significantly reduces the calcination temperature of clinker through the synergistic effect of various raw materials, thereby greatly reducing energy consumption and carbon emissions. The complex ionic reaction mechanism and the complementary physicochemical properties of multi-component solid waste enrich the diversity of hydration products and the density of the gel structure, thus ultimately achieving the excellent performance of "fast setting, fast hardening, and high strength" of the all-solid waste cementitious material.

This invention provides a composite cementitious material with high rheological properties, its preparation method, and concrete, comprising an active admixture, 40%–60% ordinary Portland cement, 20%–35% modified marble powder, and 0.8%–2% functional admixtures. The modified marble powder is obtained by surface modification treatment of marble powder with a silane coupling agent and a polycarboxylate superplasticizer, effectively solving the problem of marble powder agglomeration and ensuring uniform dispersion in the cementitious system. This significantly optimizes the rheological properties of the paste, improving fluidity and pumpability. The synergistic effect of cellulose ether and air-entraining agent in the functional admixtures further enhances the material's water retention and anti-segregation stability. The cementitious material prepared by this invention possesses both excellent mechanical properties and durability, and the concrete prepared with it exhibits good workability, dense structure, and reliable long-term performance. Simultaneously, this technology achieves high-value-added resource utilization of marble waste, reduces cement consumption and carbon emissions, and aligns with the direction of green building materials and sustainable development.

This invention discloses a tearable catheter sheath with hemostatic function, relating to the field of medical device technology, which solves the problem of inconvenience for financial personnel in binding vouchers. It includes: a sheath assembly comprising two symmetrical tearable tube seats, with a tearable sheath tube commonly disposed on the inner edge surface of the bottom openings of the two tearable tube seats; tear lines are provided on the tearable sheath tube along the symmetrical axis of the two tearable tube seats to ensure that the tearable sheath tube can be torn simultaneously when the two tearable tube seats are torn outwards; and a limiting component disposed between the tearable tube seats and the tearable sheath tube; the limiting component includes a limiting ring disposed on the outer edge surface of the tearable sheath tube, which ensures that the opening position of the tearable sheath tube when peeled is above the puncture incision, preventing the tearable sheath tube from pulling the puncture incision to the sides and causing incision expansion when it is peeled off and withdrawn from the blood vessel.

The invention discloses a preparation method and device of an Anshan basalt stratum grouting material, and relates to the technical field of grouting. Primarily stirring the slurry; shearing and dispersing at high speed; performance detection; and a grouting step. According to the invention, the superfine fly ash microbeads, silica fume and nano-silica are compounded, and a high-speed shearing process is adopted, so that the particle size of the slurry is remarkably reduced, the flowability of the slurry is improved, and the slurry can be smoothly injected into micro cracks of anshan basalt; the main component Portland cement clinker has the characteristics of early strength and micro-expansion; the filling effect of the secondary components silica fume and nano-silica further compacts the structure of the stone body, so that the stone body has high later strength and tight cohesiveness with bedrock; under the synergistic effect of a small amount of hydroxypropyl methyl cellulose and nano silicon dioxide, segregation and bleeding of the slurry are effectively prevented, and it is ensured that the slurry is fully filled in cracks.

This invention proposes a multi-degree-of-freedom gastrointestinal surgical robot system, belonging to the field of medical robot technology. It includes a platform with a pair of guide rails on its end face; a main arm drive device mounted on the platform, its output end connected to one end of the main arm to provide power to the main arm, which is hollow inside; a deployment mechanism mounted on the other end of the main arm away from the platform; two sub-arm drive devices respectively mounted on the platform and slidably connected to the guide rails; the output ends of the two sub-arm drive devices pass through the main arm and extend into the deployment mechanism to provide power to the deployment mechanism; the deployment mechanism includes a snake-bone tube and a force-sensitive elastomer clamping unit. The snake-bone tube includes several sequentially arranged rotary joints, adjacent rotary joints are hinged together, the interior of the first rotary joint communicates with a channel inside the main arm, and the last rotary joint is connected to the force-sensitive elastomer clamping unit. Clamping force and three-dimensional force sensing are achieved through inverse kinematics calculation.

The invention relates to the technical field of medical instruments, in particular to a compression device for arteriopuncture extraction, comprising: a plurality of groups of energy storage assemblies connected to two ends of a rubber sheet, the energy storage assemblies enabling the rubber sheet to fit the wrist of a patient; the follow-up structure is provided with a trigger plate, and a first inclined plane is formed at the end of the trigger plate; the stress block is slidably installed in a second sliding groove formed in the loading shell, a sleeve shaft is rotatably installed on the stress block, a plurality of transverse moving rollers are arranged on the sleeve shaft, the distances between the transverse moving rollers and the sleeve shaft are sequentially decreased, the transverse moving rollers are matched with the trigger plate, and the pressure of the rubber sheet acting on the puncture position of the wrist of the patient can be reduced; the deflection mechanism is installed in the loading shell and comprises a deflection assembly and a locking assembly, and the deflection assembly is matched with the locking assembly, so that the multiple transverse moving rollers can be sequentially matched with the trigger plate, the pressure, acting on the puncture position of the wrist of the patient, of the rubber sheet is sequentially reduced, and the self-healing effect of the patient is improved.

The application discloses an arteriovenous fistula precise pressure regulating targeted hemostasis device, relates to the technical field of medical apparatus and instruments, and comprises a base, a threaded sleeve arranged on the base, a threaded rod threaded in the threaded sleeve, a through slot formed in the base and allowing the threaded sleeve to move, a pressure head fixed to the bottom end of the threaded rod, a hollow decompression plate fixed to the outer side of the pressure head, a fixed sleeve fixed to one side of the threaded sleeve, a rotating sleeve sleeved on the outer side of the fixed sleeve, one end of the rotating sleeve penetrating through the base and being rotationally connected with the base, a first spiral groove formed in the fixed sleeve, and a first fixed shaft fixedly arranged in the rotating sleeve and sliding in the first spiral groove. The application has the beneficial effects that the structure design of the targeted convex point pressure head and the annular hollow decompression area is adopted, the convex point only applies vertical pressure to the puncture needle eye, the hollow area completely avoids the main blood vessel of the arteriovenous fistula, the targeted hemostasis of "only pressing the needle eye and not pressing the fistula tube" is realized, and the pressure force can be accurately controlled through two-stage pressure adjustment.

This invention discloses a method for preparing a water-retaining and retarding polycarboxylate superplasticizer, belonging to the field of concrete admixture technology. The method includes: using pentenol polyoxyethylene ether and / or methyl allyl polyoxyethylene ether, hydroxyethyl acrylate, hydrogen peroxide, vitamin C, mercaptopropionic acid, acrylic acid, and phosphorus-containing compounds as raw materials, a polycarboxylate superplasticizer is prepared via free radical polymerization; then, hydroxyl and carboxyl compounds are added sequentially for slow modification; after adjusting the system to a strongly alkaline state, refined cotton powder, chloromethane, and propylene oxide are added, and an etherification and crosslinking reaction is carried out under pressure and heating conditions; finally, the product is obtained by pressure filtration, pulverization, and drying. The polycarboxylate superplasticizer prepared by this invention possesses excellent water retention and retarding effects, effectively reducing concrete bleeding and segregation, extending setting time, improving concrete workability and durability, and exhibiting good compatibility with cement, making it suitable for high-temperature construction, large-volume concrete, and manufactured sand concrete projects.

A detachable bedside drainage tube fixing device with a slide rail includes a linear slide rail and a triangular sliding frame. The linear slide rail is fixedly installed on the side of the bed. The triangular sliding frame has a triangular sliding groove. A fixed bearing is installed at one corner of the triangular sliding frame, and a rotating shaft is installed in the middle of the fixed bearing. The end of the rotating shaft passes through the triangular sliding frame and is fitted with a sliding component, which is movably installed within the linear slide rail. A sliding bearing is slidably connected within the triangular sliding groove, and a positioning ball is installed within the sliding bearing. The surface of the positioning ball has a bowl-shaped notch. This invention overcomes the shortcomings of the prior art, effectively avoiding needlestick injuries caused by using sharp instruments for fixing, and allowing for adaptive adjustment of the drainage tube's fixing position, thereby effectively preventing accidental tube removal or bleeding due to traction on the drainage tube.

The present application relates to the technical field of pulling apparatus, in particular to a tissue adsorption type pulling apparatus for thoracoscope surgery. The apparatus comprises a main rod body, the bottom of the main rod body is connected with a mounting rod through welding, the diameter of the mounting rod is smaller than that of the main rod body, the mounting rod is used for mounting an adsorption sleeve, the bottom of the mounting rod is fixedly connected with an auxiliary support hook through integral forming, the end of the auxiliary support hook is in arc structure, and the outer wall is polished, the top of the main rod body is fixedly connected with a handle, the outer wall of the handle is provided with anti-skid lines to increase the friction between the hand and the handle, which is convenient for doctors to stably hold during surgery, through the setting of the adsorption sleeve and the control assembly, the stable pulling of soft tissue is realized, the uniform adsorption force of the plane suction cup can be realized, the pulling pressure of the auxiliary support hook is dispersed, the adsorption sleeve can be individually or synchronously controlled to rotate through the control assembly, and the soft tissue in the target area is removed, thereby solving the problem that the traditional hook type pulling apparatus is easy to damage soft tissue.

The invention relates to an artificial blood vessel. The artificial blood vessel comprises a tubular structure and at least one protective plate sleeve, the protective plate sleeve is arranged outside the tubular structure in a sleeving manner and at least covers a part of the tubular structure; the protection plate sleeve comprises a front wall and a rear wall, the front wall and the rear wall are connected to form a continuous pipe body, the front wall is provided with a puncture window, and the puncture window penetrates from the outer surface of the front wall to the inner surface of the front wall; the puncture window comprises a curve structure, and the curve structure comprises at least one wave crest and at least one wave trough. The artificial blood vessel not only can protect and avoid complete penetration of a puncture needle, but also has a long puncture path and is long in service life.

This invention discloses a medical pad that is less prone to fiber shedding and its preparation method. The medical pad is made from polytetrafluoroethylene (PTFE) short fibers through a nonwoven process and a laser perforation process. The preparation steps include using PTFE short fibers as raw materials, opening and carding them, feeding them into a web-laying machine to obtain a loosely structured PTFE fiber layer, then reinforcing it with a needle punch to obtain a PTFE felt sheet, and finally using a laser perforation process to form uniformly distributed through holes on the PTFE felt sheet, ultimately obtaining the medical pad that is less prone to fiber shedding. This medical pad is used in the field of vascular surgery as a pad during vascular suturing. It can seal needle holes and reduce the cutting force of sutures on the vessel wall. Compared with conventional short-fiber felt sheets, the fibers in the medical pad of this invention are less prone to shedding.

The invention discloses an alarm for preventing a catheter from slipping, and relates to the technical field of catheters.The alarm comprises an alarm assembly, the alarm assembly comprises a fixing frame, a clamping plate is arranged in the fixing frame, a threaded column is fixed to one side of the clamping plate, a threaded sleeve is in threaded connection with the outer side of the threaded column, a through groove is formed in the fixing frame, the threaded sleeve is movably connected with the interior of the through groove, and a positioning ring is fixed to the outer side of the threaded sleeve; an audible and visual alarm is fixed to one side of the fixing frame, and a trigger switch is arranged on one side of the audible and visual alarm. The anti-slip catheter has the advantages that through the arrangement of the alarm assembly, an alarm can be actively given out in time when the catheter slips, real-time reminding of catheter slipping is achieved, medical staff can know the slipping dangerous situation at the first time and rush to dispose, the situation that complication sustainable development is caused by slipping discovery delay is avoided, and the dangerous situation disposition response time is greatly shortened.

This invention provides a urological stone crushing and aspirating device, belonging to the field of urological stone crushing technology. It includes an outer sheath containing the stone crushing and aspirating device body and a guide wire, with an end piece at the top of the stone crushing and aspirating device body; a first expansion mechanism for catching the stone, connected to the end piece; and a second expansion mechanism for intercepting large stones, also connected to the end piece. By incorporating the first and second expansion mechanisms, this invention not only allows for the rapid catching of stones within the kidney using the first expansion mechanism, facilitating stone crushing and collection, but also ensures complete encapsulation of the stone without large gaps, effectively solving the problem of incomplete stone removal after crushing in traditional methods.

This invention relates to the field of building materials technology, and more particularly to a dispersant for high-volume solid carbon steel slag powder cementitious materials and its preparation method. The dispersant is a multi-block comb polymer, and the main chain of the multi-block comb polymer, from one end to the other along the chain direction, sequentially includes a first rheology-regulating block R1, a steel slag affinity block S, a cement dispersion block C, and a second rheology-regulating block R2. This invention can be used to adjust the cohesiveness, bleeding tendency, and air content of high-volume solid carbon steel slag powder concrete, achieving directional recognition and selective adsorption on the surface of solid carbon steel slag powder. It also provides efficient dispersion and slump retention for cement clinker and hydration product particles. Simultaneously, this invention can reduce the viscosity of concrete, while avoiding bleeding and segregation. The air bubbles are small and dense, improving the fluidity and pumpability of the mixture, while ensuring good early strength and long-term durability.

The utility model generally relates to the technical field of medical instruments, in particular to a multifunctional neurosurgery endoscope which comprises a neuroendoscope assembly, a blood coagulation assembly, a flushing and sucking assembly and a handle. The working ends of the neuroendoscope assembly, the blood coagulation assembly and the flushing and suction assembly are all integrally arranged at one end of the handle, and the blood coagulation assembly can stretch out or retract relative to the handle; an adjustable switch and a telescopic button are arranged at the other end of the handle, the adjustable switch is used for controlling on-off of the flushing and suction assembly, and the telescopic button is used for controlling stretching or retracting of the blood coagulation assembly. The minimally invasive surgery is carried out under direct vision of the neuroendoscope assembly, blood coagulation is more accurate, hematoma removal is more thorough, minimally invasive surgery injuries are smaller, bleeding caused by blind operation is overcome, hematoma can be removed in a larger range, the blood coagulation function is integrated, multiple functions are achieved, the occupied operation space is small, operation is convenient, the surgery time is effectively shortened, and the operation efficiency is improved. Therefore, the patient can recover more quickly.

The utility model discloses a kind of middle long catheter protection devices, it is related to catheter fixing device technical field, the utility model includes air-permeable elastic cloth, first window and second window for catheter positive pressure connector to be worn are set on air-permeable elastic cloth;First sub magic tape, a plurality of first sub magic tape are fixedly arranged in the side wall of air-permeable elastic cloth;First female magic tape, a plurality of first female magic tape are fixedly arranged in the other side wall of air-permeable elastic cloth, and first female magic tape and first sub magic tape are connected by viscosity;Fixed component, fixed component is set in second window side, for the fixed positive pressure connector.The utility model discloses a kind of middle long catheter protection devices, after patient catheter puncture, by wearing this device, on the one hand, it is convenient to fix restriction to catheter, prevent the effect of falling off, on the other hand, it is convenient to carry out compression hemostasis to puncture point, prevent bleeding.

This utility model relates to the field of medical supplies technology and discloses a hemodialysis indwelling needle with a built-in tubing clamp. It includes an indwelling needle body and an infusion tube fixedly connected to the side of the indwelling needle body. One end of the infusion tube is fixedly connected to an infusion tee, and a movable sleeve is slidably connected to the infusion tube. When using this device to implant the indwelling needle into a patient, the indwelling needle body can be inserted into the patient's vein first, and then the indwelling needle body can be attached and fixed to the patient's body surface with tape. Since the patient does not always need infusion, when not in use, the remaining infusion tube is relatively long. The excess infusion tube can be bent and clamped using a clamping device to prevent bleeding at the indwelling needle body caused by pulling the infusion tube during patient movement. During use, the hemodialysis indwelling needle with a built-in tubing clamp can fold and fix the excess infusion tube using the clamping device to prevent bleeding caused by pulling the indwelling needle body during patient movement.

The utility model discloses an orthodontic anchorage nail with double-ring buffer structure protective sleeve, including protective sleeve body and anchorage nail, and the anchorage nail is by threaded rod, anchorage nail head, anchorage nail neck and anchorage nail nut is composed, and the lower extreme of anchorage nail nut is fixedly connected with threaded rod, and the top of anchorage nail nut is equipped with anchorage nail head, and the anchorage nail neck is equipped between anchorage nail nut and anchorage nail head, and the top of anchorage nail is connected in sleeve joint with protective sleeve body, and the protective sleeve body includes outer protective sleeve and inner protective sleeve, and the surface of outer protective sleeve covers in inner protective sleeve, and the center of inner protective sleeve is equipped with sleeve joint hole, and the surface of outer protective sleeve is equipped with upper buffer ring and lower buffer ring. The utility model discloses sleeve joint connection has protective sleeve body at the top of anchorage nail, can avoid the direct contact of anchorage nail and labium, effectively prevent the mucous membrane ulcer or hemorrhage caused by friction when speaking, mastication, brushing teeth of patient, can carry out anti -inflammatory to the contact place of anchorage nail and gum simultaneously.