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34results about How to "Prevent retrograde infection" patented technology

Anti-backflow and blockage-proof negative pressure drainage device

The invention relates to an anti-backflow and blockage-proof negative pressure drainage device, which comprises a liquid inlet valve spool (2), a liquid drainage valve spool (7), left and right valve bushes (1 and 5), left and right valve bonnets (4 and 9), a needle barrel connecting tube (6), a liquid outlet connecting tube (12), a left spring (3) and a right spring (8). The liquid inlet valve spool (2) which only allows body liquid to flow rightwards is disposed in the left valve bush (1), the liquid drainage valve spool (7) which only allows the body liquid to flow to a right lower direction is arranged in the right valve bush (5), and the needle barrel connecting tube (6) and the liquid outlet connecting tube (12) are respectively connected with the right valve bush (5) via glue; and the body liquid can be led out via vertical movement of a piston (11) in a needle barrel (10) and then is drained to a container. The anti-backflow and blockage-proof negative pressure drainage device has the advantages that the device is smooth in drainage, not easy to cause blockage and high in drainage efficiency, can prevent backflow of the body liquid under the condition that negative pressure is instable or is removed suddenly, avoids possibility of infection caused by backflow of the body liquid, and is convenient in use and easy to be controlled by medical staffs and family members of patients.
Owner:盐城市瑞华机电制造有限公司

Backflow-prevention anti-blocking drainage device with large suction amount

The invention relates to a backflow-prevention anti-blocking drainage device with a large suction amount. The drainage device comprises a liquid inlet valve body (1), a liquid inlet valve core (2), a liquid inlet valve spring (3), an upper valve cover and a lower valve cover (4 and 10), a needle cylinder piston (5), a piston rod (6), a liquid discharging valve body (7), a liquid discharging valve core (8) and a liquid discharging spring (9), wherein the liquid inlet valve core (2) only allowing a liquid to flow downwards is arranged in the liquid inlet valve body (1), and an insertion hole for a liquid inlet pipe (11) is formed in the upper left part of the liquid inlet valve body (1); the liquid discharging valve core (8) only allowing the liquid to flow leftwards is arranged in the liquid discharging valve body (7); and an insertion hole of a liquid discharging pipe (13) and a duct allowing the needle cylinder piston (5) to move leftwards and rightwards are formed in the left side and in the upper right part of the liquid discharging valve body (7) respectively. The needle cylinder piston (5) moves leftwards and rightwards continuously, so that the liquid can be drained and discharged to a container. The backflow-prevention anti-blocking drainage device with a large suction amount has the advantages as follows: smooth drainage is realized, the drainage amount is large, retrograde infection of the liquid is prevented, blocking is avoided, and continuous drainage can be realized.
Owner:CHANGZHOU XIAOGUO INFORMATION SERVICES

Intelligent in-situ implanted artificial bladder

InactiveCN1339290APrevent complications from intestinal obstructionAvoid intestinal obstructionProsthesisInterstitial cystitisPressure sense
The intelligent in-situ implanted artificial bladder consists of urine conveying and storing system and automatic intelligent system, the former includes artificial ureter, artificial bladder body and artificial urethra; and the latter incldues pressure sensing alarm, automatic flow returning mechanisms, urine pump and controller. The present invention is used mainly for patient needling bladder reconstruction and urethra reformation owing to bladder tumor, necrotic and interstitial cystitis, traumatic bladder damage, etc. After the body's bladder is ablated, the artificial bladder is in-situimplanted into the pelvic cavityk, the artificial ureter is anastomosed with the ureter stump, the artificial urethra is anastomosed with the urethra strump, and the urine conveying and storing system is reconstructed. The present invention makes it possible for the patient to control urination time autonomously.
Owner:靳凤烁 +1

Thoracic closed drainage device for nursing in pneumology department

The invention discloses a thoracic closed drainage device for nursing in the pneumology department in the technical field of nursing assisting devices in the pneumology department. The device comprises a bottom plate, the bottom of the bottom plate movably sleeves round shafts, rolling wheels fixedly sleeve the round shafts, the two ends of the bottom plate movably sleeve threaded rods respectively, and the tops of the two threaded rods both extend to the outside of the bottom plate; gears are fixedly mounted on the outsides of the bottoms of the threaded rods, a chain is in transmission connection between the outsides of the two gears, the threaded rods are threadedly sleeved with a horizontal plate, and a dividing ruler located between the two threaded rods is fixedly mounted on the right side of the top of the bottom plate. Through the cooperation among the gears, the chain and the threaded rods, the two threaded rods can be synchronously rotated by rotating one threaded rod, so that ascending and descending of the horizontal plate are realized; through the cooperation between the horizontal plate and the dividing ruler, a liquid collecting bottle can be adjusted to the portion60 cm below an opening of the chest cavity, backflow of a drainage liquid can be effectively prevented, and the phenomenon of retrograde infection can be effectively avoided.
Owner:赵福菊

Thoracic water-sealed drainage apparatus

The invention discloses a pleural cavity water seal drainage device, which comprises a drainage catheter, a negative pressure regulating valve, a water injection port of a negative pressure monitoring window, a supporting foot and a drainage joint. A hook is provided, and a sampling hole is provided inside the outer shell; the head of the drainage catheter is fixedly connected with a joint, the outside of the joint is wrapped and fixed by an antibacterial sheath, and the end of the drainage catheter is connected to the sampling hole; the surface of the outer shell is inlaid A panel, the panel is provided with a water injection port, and the water injection port is connected with the outer shell, the surface of the panel is provided with a negative pressure monitoring window, and the surface of the panel is marked with the water level line of the water seal cavity. The water-sealed drainage device for the chest cavity has the advantages of simple structure, easy manufacture, small volume, convenient portability, good drainage effect, safety and reliability; it has the function of preventing regurgitation, improves the safety factor of the device, and avoids retrograde infection inside the patient's chest cavity.
Owner:XIAOGAN CHUANGKE ELECTRONICS TECH

Built-in hidden urinary catheter for male

The invention discloses a built-in hidden urinary catheter for the male. The urinary catheter comprises a head part, a tube part and a mechanical control valve located in the tube; the head part is fixed in the urinary bladder cavity, and the head part is provided with a urine inlet; the tube part is arranged in the male urethra, and the tail end of the tube part is provided with a urine outlet; the mechanical control valve is opened under the function of external force, and urine enters the urinary catheter through the urine inlet and flows out of the urine outlet and is discharged out of thebody through the external urethral orifice. The urinary catheter has the advantages that the urinary catheter is slightly shorter than the male urethra and does not stay out of the body, the risk ofbacterial infection is reduced, and the situation is prevented that the urinary catheter is dragged out due to misoperation of a patient and the urethra is damaged; moreover, the inconvenience of carrying a urine bag by the patient suffering from urinary incontinence for a long time is overcome, the damage of carrying the urine bag for a long time to the urinary bladder muscles is reduced, the patient can live normally accordingly, the appearance of the urinary catheter is the same as that of a normal person, the life quality of the patient is improved to a certain degree, and the psychological stress of the patient is reduced.
Owner:SHANDONG UNIV

Improved external ventricular drainage tube

InactiveCN105013064AReal-time monitoring of intracranial pressureConvenient for clinical observationWound drainsCatheterComputed tomographyMedicine
The invention relates to an improved external ventricular drainage tube. A pressure sensor, a drainage side hole area and scales are arranged at the front section of the external ventricular drainage, wherein a small hole is formed in the middle section of the drainage tube, the outer side of the small hole is coated with a movable rubber sleeve, a metal support rod is arranged in the drainage tube, and a monitoring port is formed in the tail end of the drainage tube and connected with the pressure sensor through a monitoring port connecting line. The drainage tube has the advantages as follows: the pressure sensor is arranged at the front end of the drainage tube and can monitor the intracranial pressure of a patient in real time; a developing material is arranged in the drainage side hole area at the front section of the drainage tube, can develop under CT (computed tomography) and facilitates clinical observation of the specific position of the drainage side hole area and judgment of the drainage effect; by means of the metal support rod in the drainage tube, the outer layer of the drainage tube can be placed in a ventricle conveniently in a puncture manner; the metal support rod can be pulled out of the small hole in the middle section of the drainage tube, and leakage from the side wall of the drainage tube and retrograde infection after pulling out of the support rod can be effectively avoided.
Owner:SECOND MILITARY MEDICAL UNIV OF THE PEOPLES LIBERATION ARMY

Preparation method of silver-carried multilayer film coating biliary tract support frame

The invention relates to the field of a medical material, and in particular to a preparation method of a silver-carried multilayer film coating biliary tract support frame. The method comprises the steps of: dropping 0.01-5mg / ml heparin solution into a biliary tract support frame body, spin coating, dropping three-steaming water into the biliary tract support frame body, spin coating, dropping 0.01-10mg / ml chitosan nano silver-carried solution into the biliary tract support frame body, spin coating, and circulating the process to obtain the silver-carried multilayer film coating biliary tractsupport frame, wherein the rotation speed of the spin coating is 250-5000 revolutions, and the spin coating time is 10-50 seconds. The surface of the prepared silver-carried multilayer film coating biliary tract support frame is more flat, and the silver-carried multilayer film coating biliary tract support frame has the functions of anti-bacterium, anti-virus and anti-mycete, so that the unobstructed period of the biliary tract support frame can be prolonged, and the antidromic infection of the biliary tract can be avoided.
Owner:ZHEJIANG UNIV

Collecting device for drainage liquid and seepage liquid

The invention relates to a collecting device for drainage liquid and seepage liquid. The collecting device comprises a first collecting bag and a second collecting bag, wherein the first collecting bag has a fistulization bag structure; a guide pipe which is used for communicating the first collecting bag with the second collecting bag is connected between the first collecting bag and the second collecting bag; one-way conduction switches are respectively arranged on an upper end part of the guide pipe, the middle and lower end parts of an inlet part connected with the first collecting bag and an outlet part connected with the second collecting bag; a draining valve which is communicated with an inner chamber of the second collecting bag is arranged at the bottom of the second collecting bag; the first collecting bag, the second collecting bag and the guide pipe are integrated into a whole; the inlet of the first collecting bag is covered on a stoma of a patient, a drainage pipe is inserted into the inlet of the collecting bag, the seepage liquid between the stoma and the drainage pipe and the drainage liquid drained from the drainage pipe can be collected by the second collecting bag, and when the liquid collected in the second collecting bag is almost full, the draining valve thereon is opened, so that the collected liquid can be drained. The one-way conduction switches arranged in the collecting device can prevent the backflow phenomenon of the liquid in the second collecting bag or the guide pipe.
Owner:张华伟

Intelligent in-situ implanted artificial bladder

The intelligent in-situ implanted artificial bladder consists of urine conveying and storing system and automatic intelligent system, the former includes artificial ureter, artificial bladder body and artificial urethra; and the latter incldues pressure sensing alarm, automatic flow returning mechanisms, urine pump and controller. The present invention is used mainly for patient needling bladder reconstruction and urethra reformation owing to bladder tumor, necrotic and interstitial cystitis, traumatic bladder damage, etc. After the body's bladder is ablated, the artificial bladder is in-situ implanted into the pelvic cavityk, the artificial ureter is anastomosed with the ureter stump, the artificial urethra is anastomosed with the urethra strump, and the urine conveying and storing system is reconstructed. The present invention makes it possible for the patient to control urination time autonomously.
Owner:靳凤烁 +1

Respiratory training terminal

The invention discloses a respiratory training terminal which comprises a respiratory pipeline, a pressure sensor, a central processing unit, a communication device, a power supply device and a handheld shell, a clamping containing bin is formed in the upper portion of the handheld shell, and the rear half portion of the respiratory pipeline is inserted into the clamping containing bin to be clamped and fixed. The pressure sensor is installed in the handheld shell and connected with a pressure channel communicated with the upper portion of the breathing pipeline, the pressure sensor is in circuit connection with the central processing unit, the communication device is arranged in the handheld shell and connected with the central processing unit through a circuit, and the power supply device is arranged in the handheld shell. The pressure sensor, the central processing unit and the communication device are powered by the power supply device. The respiratory training device solves the problems that an existing respiratory training device cannot be detached to be cleaned, is prone to pollution and cannot conduct expiration training and inspiration training at the same time.
Owner:苏波

Bile-duct anastomosis bracket

Disclosed is a bile duct anastomosis stent, comprising a stent main body made of degradable material which is acceptable by people. The stent main body takes the shape of a tube and has a diameter which is suitable for putting in a bile duct. Each of the two sides of the outer surface of the main body is provided with a circle of protuberance for fixing the pouch line knots at the broken ends of the bile duct. The bile duct anastomosis stent has the advantages that the bile duct anastomosis stent is easy to operate, quick, short in anastomosis time and low in cost and has no complicating disease after the operation.
Owner:ZHEJIANG UNIV

Control valve for automatic preventing body fluid regurgitation preventing

InactiveCN1597010AReduce the number of zero-distance contact with patientsReduce the chance of being infectedValvesEngineeringControl valves
A control valve able to automatically prevent the body fluid from flowing reversely is composed of a valve cavity with liquid inlet at one end and liquid outlet at another end, a liquid inlet opening-closing part arranged at the liquid inlet, and a reverse flow resistant part.
Owner:崔志茹

Safety-type three-cavity balloon catheter

The invention provides a safety-type three-cavity balloon catheter. The safety-type three-cavity balloon catheter comprises a pipe body, wherein a branching pipe is arranged at the bottom of the pipe body; and a medical non-return valve is arranged at the pipe orifice of the branching pipe. When the safety-type three-cavity balloon catheter is in use, as the branching pipe is arranged at the bottom of the pipe body, and the medical non-return valve is arranged at the pipe orifice of the branching pipe and matched with an infusion apparatus connector, so that infusion by a needle head is not required, and the pipe body is prevented from being punched; and the medical non-return valve can be kept closed, and an infusion apparatus is unobstructed after being connected with the medical non-return valve in a pressing manner and keeps the urinary catheter closed after being pulled out to effectively prevent retroinfection. The safety-type three-cavity balloon catheter is convenient to operate and less in operation steps, and is directly connected with the washing fluid infusion apparatus to realize needle-free use, and the safety valve is used for preventing leakage and infection.
Owner:SHIYAN TAIHE HOSPITAL

Split-type bladder irrigation drainage liquid container

The invention discloses a split-type bladder irrigation drainage liquid container. The split-type irrigation liquid container comprises a latex tube, a primary fluid reservoir, and a secondary fluid reservoir. The latex tube is provided with a one-way valve; the upper portion of the primary fluid reservoir is provided with a first inlet, the bottom of the primary fluid reservoir is provided with a first outlet, a first valve is arranged in the first outlet, and a vent is arranged on the primary fluid reservoir; the opening of the secondary fluid reservoir is provided with a reservoir cover, a second inlet is arranged in the reservoir cover, and the lower portion of the secondary fluid reservoir is provided with a second outlet; the latex tube is connected with the bladder of a patient, the outlet of the latex tube is connected with the first inlet, the first outlet is connected with the second inlet, and the second outlet is provided with a second valve. The drainage liquid container not only facilitates pouring out of drainage fluid, but also prevents retrograde infection, accurately measures and records output of the patient, and provides basis for assessment, observation and treatment of the patient.
Owner:THE FIRST AFFILIATED HOSPITAL OF ANHUI MEDICAL UNIV

Anti-backflow anti-blocking negative pressure drainage device

The invention relates to an anti-backflow and blockage-proof negative pressure drainage device, which comprises a liquid inlet valve spool (2), a liquid drainage valve spool (7), left and right valve bushes (1 and 5), left and right valve bonnets (4 and 9), a needle barrel connecting tube (6), a liquid outlet connecting tube (12), a left spring (3) and a right spring (8). The liquid inlet valve spool (2) which only allows body liquid to flow rightwards is disposed in the left valve bush (1), the liquid drainage valve spool (7) which only allows the body liquid to flow to a right lower direction is arranged in the right valve bush (5), and the needle barrel connecting tube (6) and the liquid outlet connecting tube (12) are respectively connected with the right valve bush (5) via glue; and the body liquid can be led out via vertical movement of a piston (11) in a needle barrel (10) and then is drained to a container. The anti-backflow and blockage-proof negative pressure drainage device has the advantages that the device is smooth in drainage, not easy to cause blockage and high in drainage efficiency, can prevent backflow of the body liquid under the condition that negative pressure is instable or is removed suddenly, avoids possibility of infection caused by backflow of the body liquid, and is convenient in use and easy to be controlled by medical staffs and family members of patients.
Owner:盐城市瑞华机电制造有限公司

Automatic disposable vacuum drainager

An automatic disposable vacuum drainager comprises an infusion tube puncture device, an infusion tube, a drainage tube, a diversion tube and a liquid accumulation bag. The automatic disposable vacuum drainager is characterized in that the infusion tube puncture device, the infusion tube, the drainage tube, the diversion tube and the liquid accumulation bag are connected in sequence to form the shape of T, the drainage tube is provided with a medical one-way liquid instillation valve, and the infusion tube is provided with a transparent drip cup and a flow control valve. The automatic disposable vacuum drainager has the advantages that the medical one-way liquid instillation valve can stop drained liquid from flowing back to the lesion location of drainage, retrograde infection can be effectively prevented, liquid in the drainage tube flows into the liquid accumulation bag through the diversion tube due to the action of gravity and siphonic action, continuous and stable negative pressure is automatically formed in the drainage tube, the infusion tube supplies the liquid continuously to maintain the liquid inside the drainage tube, the phenomenon that the siphonic action in the drainage tube disappears when gas is drained is prevented, and pre-hospital care, battlefield first aid, injured transport and the like are convenient to achieve.
Owner:牛晓滨

Split type anti-blocking tube drainage ball

The split type anti-blocking tube drainage ball comprises a drainage ball body, an upper drainage tube, a drainage ball opening and a tee joint, the upper drainage tube and the drainage ball upper opening are arranged at the upper end of the drainage ball body, the tee joint is arranged at one end of the upper drainage tube, a movable clamp is arranged on one side of the upper drainage tube, and a lower drainage tube is arranged at the bottom end of the drainage ball body. And a filter screen is arranged in the drainage ball main body. The flow-out and the flow-out direction of drainage liquid can be controlled by adjusting the movable clamp and the valve on the tee joint, the drainage liquid can be extracted from the lower end of a wound of a patient, the lower drainage tube or the drainage ball main body for bacterial culture by adjusting the movable clamp and the valve, whether the wound of the patient is infected or not is identified, and the purpose of precise treatment is achieved. After the filter screen is additionally arranged, the filter screen can filter residual tissues and blood clots flowing out of the wound, the drainage tube opening is prevented from being blocked, operation of medical staff is facilitated, and the hospitalization cost of a patient is reduced.
Owner:殷婧

Waste liquid bag for automated peritoneal dialysis with disinfection tablets

PendingCN112190774AEasy to observe clarityAchieve full airtightnessCatheterIntravenous devicesEffervescent tabletAutomated peritoneal dialysis
The present invention provides a waste liquid bag for automated peritoneal dialysis with disinfection tablets. The waste liquid bag for the automated peritoneal dialysis with the disinfection tabletscomprises a liquid storage bag body, a disinfection bag, a liquid discharging pipe, a disinfection pipe and a drainage pipe, the drainage pipe is integrally formed on an upper portion of the liquid storage bag body, the disinfection pipe is connected to one side of a lower portion of the liquid storage bag body and connected with the disinfection bag, the liquid discharging pipe is connected to the other side of the lower portion of the liquid storage bag body, a disinfection clamp is arranged on the disinfection pipe, a liquid discharging clamp is arranged on the liquid discharging pipe, disinfection tablets are arranged in the disinfection bag, a liquid discharging cover is arranged at an end part of the liquid discharging pipe, and a cover cap is arranged at a end part of the liquid discharging pipe. The waste liquid bag is provided with chlorine-containing disinfection effervescent tablets, the chlorine-containing disinfection effervescent tablets can be quickly dissolved in liquid, and the waste liquid bag can timely perform a harmless treatment on waste liquid of peritoneal dialysis, prevents infectious diseases, and is made of transparent polyethylene materials, convenient to observe clarity of the waste liquid of the peritoneal dialysis and conductive for observation of diseases.
Owner:THE FIRST AFFILIATED HOSPITAL ZHEJIANG UNIV COLLEGE OF MEDICINE

Multifunctional controllable bladder fistulization tube

The invention discloses a multifunctional controllable bladder fistulization tube. The multifunctional controllable bladder fistulization tube comprises a liquid guide tube, an extension tube and a urine bag, wherein a liquid drainage one-way valve is arranged at the top end of the liquid guide tube, a liquid drainage tube is connected to the top end of the liquid drainage one-way valve, an inner cavity of the liquid guide tube is divided into a liquid cavity, a line cavity and an air cavity, a pressure probe is arranged in the line cavity, a pressure sensor is arranged at the outer end of the line cavity, an alarm is arranged at one side of the pressure sensor, the outer end of the air cavity is connected with a ventilation one-way valve, a plurality of drainage openings are formed in the bottom of a liquid outlet cavity, a fixing ring buckle sleeves the periphery of the liquid guide tube, an air bag is arranged at the bottom of the fixing ring buckle, and the air bag communicates with the air cavity. Urination can be carried out in a toilet through the extension tube, urination can also be carried out through the urine bag, and use is more convenient; and meanwhile, the fistulization tube is fixed through the fixing ring buckle and the air bag, so that the air bag is prevented from moving in the bladder to continuously stimulate a triangular area of the bladder to cause bladder spasm discomfort.
Owner:赵力

Silver-loaded biliary tract stent with multiple layers of film coatings and preparation method of silver-loaded biliary tract stent

The invention relates to the field of medical materials, in particular to a silver-loaded biliary tract stent with multiple layers of film coatings, which comprises a biliary tract stent body, wherein a multiple layers of film coatings which are alternately arranged according to chitosan nano silver layers and heparin layers are coated on the surface of the biliary tract stent body, the total layer quantity of the multiple layers of film coatings is not less than 4, and the total thickness of the multiple layers of film coatings is between 100 and 2000nm. The invention also provides a preparation method of the silver-loaded biliary tract stent with multiple layers of film coatings, which comprises the steps of: dip-coating the biliary tract stent body in a heparin solution and then dip-coating in a chitosan-loaded nano silver solution, and circularly repeating the steps. The silver-loaded biliary tract stent with multiple layers of film coatings, prepared by utilizing the preparation method disclosed by the invention, has the functions of resisting bacteria, virus and mycete; and due to the adoption of the silver-loaded biliary tract stent, the unobstructed period of the biliary tract stent can be prolonged and the inverse infection of the biliary tract can be prevented.
Owner:ZHEJIANG UNIV

Anti-reflux and anti-clogging drainage device with large suction volume

The invention relates to a backflow-prevention anti-blocking drainage device with a large suction amount. The drainage device comprises a liquid inlet valve body (1), a liquid inlet valve core (2), a liquid inlet valve spring (3), an upper valve cover and a lower valve cover (4 and 10), a needle cylinder piston (5), a piston rod (6), a liquid discharging valve body (7), a liquid discharging valve core (8) and a liquid discharging spring (9), wherein the liquid inlet valve core (2) only allowing a liquid to flow downwards is arranged in the liquid inlet valve body (1), and an insertion hole for a liquid inlet pipe (11) is formed in the upper left part of the liquid inlet valve body (1); the liquid discharging valve core (8) only allowing the liquid to flow leftwards is arranged in the liquid discharging valve body (7); and an insertion hole of a liquid discharging pipe (13) and a duct allowing the needle cylinder piston (5) to move leftwards and rightwards are formed in the left side and in the upper right part of the liquid discharging valve body (7) respectively. The needle cylinder piston (5) moves leftwards and rightwards continuously, so that the liquid can be drained and discharged to a container. The backflow-prevention anti-blocking drainage device with a large suction amount has the advantages as follows: smooth drainage is realized, the drainage amount is large, retrograde infection of the liquid is prevented, blocking is avoided, and continuous drainage can be realized.
Owner:CHANGZHOU XIAOGUO INFORMATION SERVICES

Disposable automatic negative pressure drainage device

A disposable automatic negative pressure drainage device, comprising an infusion tube puncturer, an infusion tube, a drainage tube, a drainage tube, and a effusion bag, characterized in that: the infusion tube puncturer, infusion tube, drainage tube, and drainage tube The effusion bags are connected in sequence to form a "D" shape, the drainage tube has a medical one-way liquid valve, and the infusion tube has a transparent drip pot and a flow regulating valve. The beneficial effect of the present invention is that the medical one-way liquid-through valve can prevent the drained liquid from flowing back to the drainage lesion site, which can effectively prevent retrograde infection, and the liquid in the drainage tube flows to the effusion through the drainage tube due to gravity and siphon effect bag, so that a continuous and stable negative pressure is automatically formed in the drainage tube. The continuous liquid supply of the infusion tube can maintain the liquid in the drainage tube, prevent the siphon effect in the drainage tube from disappearing when the gas is drained, and facilitate pre-hospital first aid, first aid in the field and transport of the wounded.
Owner:牛晓滨

Preparation method of silver-carried multilayer film coating biliary tract support frame

The invention relates to the field of a medical material, and in particular to a preparation method of a silver-carried multilayer film coating biliary tract support frame. The method comprises the steps of: dropping 0.01-5mg / ml heparin solution into a biliary tract support frame body, spin coating, dropping three-steaming water into the biliary tract support frame body, spin coating, dropping 0.01-10mg / ml chitosan nano silver-carried solution into the biliary tract support frame body, spin coating, and circulating the process to obtain the silver-carried multilayer film coating biliary tract support frame, wherein the rotation speed of the spin coating is 250-5000 revolutions, and the spin coating time is 10-50 seconds. The surface of the prepared silver-carried multilayer film coating biliary tract support frame is more flat, and the silver-carried multilayer film coating biliary tract support frame has the functions of anti-bacterium, anti-virus and anti-mycete, so that the unobstructed period of the biliary tract support frame can be prolonged, and the antidromic infection of the biliary tract can be avoided.
Owner:ZHEJIANG UNIV

Catheter capable of adjusting hole size of head end

ActiveCN104922777AAvoid cloggingEasy to drainCatheterStraight cathetersFoley catheter
The present invention discloses a catheter capable of adjusting hole size of a head end. The catheter comprises a straight catheter, three sliding guide wires are disposed in a side wall of the straight catheter with an equal interval, front ends of the guide wires are connected with the head end of the catheter, and the rear segment of the catheter is provided with an adjusting switch capable of adjusting the guide wires to extend and retract. The head end hole can be slightly lessened when the catheter is inserted, and the hole can be largened or closed according to the need after the catheter is indwelled. A hole size adjusting function is added to a traditional catheter, the hole is largened to facilitate drainage, and the catheter is prevented from being blocked by blood clots or tissue blocks; and the traditional fact the catheter is closed by external clamp is replaced by closing the head end hole, so that retrograde infection of the catheter can be prevented. The catheter is simple in structure, convenient to manufacture and easy to use.
Owner:JIANGSU CANCER HOSPITAL
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