32results about How to "Eliminate the risk of infection" patented technology

A system and method for locating an internal device separated by a boundary from and in wireless communication with an external device. External device includes an active emitter mechanism wherein a carrier signal is modulated by a location interrogation signal thereby generating an external RF power signal during transmission to the internal device. A secondary antenna of the internal device receives the external RF power signal and induces an RF power signal therein that is converted to a DC induced voltage signal. An indication signal proportional to the intensity of the DC induced voltage signal induced in the secondary antenna is produced by the external device. The process is repeated each time the user moves the external device to a new location proximate the patient's body until a maximum DC induced voltage signal measurement is ascertained representative of a specific area in which the internal device is located.

The distribution of a program is carried out by an agent system. The server (10) has a function ((4)) which transmits a service ID uniquely determined inside the distribution system, and a function ((6)) which, in the case where there is an acquisition request for a program attached with the transmitted service ID, transmits the program together with the service ID to the client terminal making the acquisition request; and the client terminals (20) are equipped with a function ((3)) which makes a request for the issuing of a service ID before the request of a required program, a function ((5)) which acquires the service ID transmitted from the server, and makes an acquisition request for the program attached with the acquired service ID, and a function which authorizes the execution of a program only in the case where the received program matches the service ID attached at the time of said acquisition request.

The invention discloses a drug-delivery absorbable hemostatic sponge, which belongs to the technical field of novel hemostatic materials and comprises drug-loaded chitosan microsphere and collagen protein, wherein the drug-loaded chitosan microsphere comprises medicinal grade chitosan and medicinal grade tranexamic acid. The weight ratios of the medicinal grade chitosan to the medicinal grade tranexamic acid are (0.01-100):1 respectively. The invention also discloses a method for preparing the drug-delivery absorbable hemostatic sponge. By selecting collagen with good hemostatic function and biocompatibility as the main hemostatic substrate, compounding the drug-delivery chitosan microsphere and the medicinal grade tranexamic acid, and making use of the special properties of the chitosan including hemostatic function and drug-delivery function, a novel hemostatic sponge with rapid hemostasis and lasting and steady drug delivery in a period of time can be prepared, and has considerable economic and social benefits.

The invention relates to a mesenchymal stem cells serum-free culture medium. The serum-free culture medium comprises a basal culture medium and an additive component, wherein the additive component comprises the following components: rhEGF, rhVEGF, rhPDGF-BB, rhFGF-b, rhTGF-beta1, human serum albumin, recombinant deferritin, a recombinant human insulin growth factor and hydrocortisone. The invention also provides an application of the mesenchymal stem cell serum-free medium. The composition is clear and stable; the instability of serum culture is eliminated, and meanwhile, all factors have thesynergistic effect, the umbilical cord mesenchymal stem cells can be efficiently amplified, the cell cycle is shortened, the proliferation is rapid, the yield of three generations of cultured cells reaches 1.5 times or more of that of serum culture, the cell consistency is good, and the biological characteristics and differentiation potential of the umbilical cord mesenchymal stem cells can be efficiently maintained due to the synergistic effect of all factors.

The invention relates to biology and to human and animal physiology. The inventive method for optimising functional status of vegetative systems of the human organism consists in exposing the biologically active areas of the human body to the action of microwave electromagnetic pulse by exposing each area to the radiation, the frequency of which is predetermined separately for each area or for several areas equivalent in linear dimensions, the constant mean energy-flux density of which is maintained during the entire session, which is amplitude modulated by a signal which is quasi-randomly variable in the range of 20 Hz-50 kHz and which is circularly polarized. The inventive device for carrying out said method comprises, in-series connected, a microwave frequency generator, a modulator in the form of a pulse generator of quasi-random signals, a radiating aerial in the form of a flat broadside array and a control unit connected to each above-listed units. The aerial is embodied in such a way that it is circularly polarized and the device is also provided with a dielectric spacer, the thickness of which is fixed, which is made of a material transparent for the operating bandwidth and which is placeable between the aerial and the radiation area.

The invention provides a degradable outer stent and a preparation method and application of the stent. The degradable outer stent comprises a chimeric material and a delivery substance, the chimeric material comprises a degradable polymer substrate and a liquid metal material embedded in the degradable polymer substrate, and the delivery material is arranged on the surface of the liquid metal material; the degradable outer stent is mainly used in coronary artery bypass grafting, peripheral artery bypass grafting or artificial arteriovenous fistula surgery, can be implanted in the peripheral ofa vein graft or the peripheral of other pathological dilated vessels, and plays a role of mechanical support; in addition, the liquid metal material with specific morphology and composition are selected in the degradable outer stent, and extensive electroporation of vascular wall can be realized, so as to deliver plasmids, drugs, proteins and other substances; and the integration of electroporation into the outer stent with purely mechanical support, so as to improve the effect of the outer stent on inhibiting intimal hyperplasia of vein.

The invention relates to a barrel bolt. The barrel bolt comprises an assembling channel and a working channel which are separated, wherein the assembling channel is used for loading an insert tube of an instrument, and a visual window slide is arranged at the end of the assembling channel in a sealed manner, and the window slide can serve as the observation window of the insert tube; the working channel is used for allowing the instrument to penetrate and allowing surgical operation. An endoscopic surgery device is obtained by combining the barrel bolt with an endoscope. The endoscopic surgery device has the advantages that only the cheap barrel bolt needs to be replaced, expensive disposable endoscopes are not needed, the endoscope does not need to be sterilized or repeatedly sterilized, the service life of the endoscope is prolonged, the problem that doctor daily work amount or surgery is affected due to the fact that endoscope sterilizing is time-consuming is solved, the problem that the endoscope is damaged by a sterilizing medium is solved, the infection risk caused by endoscope cross use among different living bodies is reduced or avoided, the application cost of the endoscopic surgery device is lowered, and medical treatment cost is lowered.

The invention discloses a scalpel blade detacher. The scalpel blade detacher comprises a detacher body, wherein a blade groove for a blade to penetrate and a handle foot groove for a handle foot of ascalpel handle to penetrate are formed in the detacher body; and the sections of the blade groove and the handle foot groove are crossed. According to the scalpel blade detacher with the structure, the blade groove is used for clamping the blade and then the scalpel handle is turned over to achieve a purpose of detaching the blade. The detaching manner is convenient and rapid and a detaching mechanism is simple and easy to use. When the scalpel blade detacher is used, a doctor does not need to hold the blade with hands, thus, the doctor is prevented from being cut by the blade, and the hiddendanger of infection of medical workers is eliminated.

The invention provides a medical needle with self-destroying and puncture-resistant functions. The medical needle comprises a needle seat, a self-destroying mechanism and a needle core that penetrates the needle seat, wherein the self-destroying mechanism comprises a containing pipe, a self-destroying switch and an elastic part, the containing pipe comprises an outer containing pipe and an inner containing pipe, and the inner containing pipe can be movably penetrated in the outer containing pipe; by operating the self-destroying switch, the elastic part can be started to drive the needle core to retract back into the containing pipe, meanwhile, the inner containing pipe penetrates out of the rear end of the outer containing pipe, and the containing pipe is provided with a springback-resistant structure which is used for preventing the inner containing pipe from springing back forwards. Compared with the prior art, as the springback-resistant structure is arranged, the inner containing pipe can be locked tightly and cannot spring back forwards accordingly after stretching out backwards, so that the front end of the needle core is prevented from springing back and stretching out from the front end of the containing pipe, and the hidden danger of puncturing medical workers and bringing about infection is eliminated.

The invention relates to a nursing method and device, in particular to a nursing method and device of wounds and correlated parts. A scheme of isolating a central part for treating surrounding areas is adopted; according to the scheme, clearance structures for the wounds or the correlated parts are formed by isolating devices 1 on the wounds or peripheral parts which are coated with medicine or disinfected or subjected to other treatment in order to isolate the wounds, a treatment device 2 applies medicine to or conducts other treatment on the wounds or the peripheral parts, a limiting device3 is adopted for limiting and stabilizing certain wounds or other correlated parts, fixing devices 4 are used for fixing each component to the human body or other objects, ventilation passages 5 are used for air convection, and a notch 6 is used for further fixing and limiting the body part and improving the aesthetic degree and comfort degree.

The embodiment of the invention discloses a polyvalent antibody and a preparation method thereof. The polyvalent antibody includes a plurality of antigen-binding sites, wherein the antigen-binding sites are connected to a human-source antibody core fragment; and the antigen-binding sites at least include antigen-binding sites specifically bound with tumor cells and antigen-binding sites specifically bound with immunocyte. The polyvalent antibody is obtained through reformation in a genetic engineering manner, and can enable the immunocyte to be bound to the cancer cells to arouse attack of theimmunocyte on the cancer cells. Compared with a conventional CAR-T treatment method, a treatment method disclosed by the invention has the advantages that the polyvalent antibody has broad spectrum,does not depend on autologous T cells of patients, and can be in mass production. In addition, waiting time does not exist, and the polyvalent antibody can be immediately prepared for use. Relying ona mature antibody production technology, risk infected by other pathogens can be eliminated in the manner of GMP and the like, and the polyvalent antibody has lower treatment fees.

The invention relates to an inward-curling destroyer for medical syringe needle of department of infectious diseases, and belongs to the field of medical apparatuses and instruments. The device comprises a C-shaped frame, wherein a rail groove is axially formed in the upper part of the inner wall of the C-shaped frame; a rear sliding block is matched in the rail groove, and a bending assembly is fixed on the rear sliding block; the bending assembly is located in the C-shaped frame and comprises a front block and a rear block, the front block and the rear block are seamlessly spliced, and arc-shaped notches are formed in the connecting positions of the front block and the rear block; after the front block and the rear block are spliced, the two notches form a circular constraint surface, and a gap is reserved at the joint of the upper parts of the front block and the rear block; the width of the gap is larger than the diameter of the needle stem, and the gap is tangent to the arc-shaped notch of the rear block. A needle tip is directly curled and hidden, the possibility that the needle tip is scratched by the needle tip is completely eradicated, the risk that medical workers are infected is avoided, cost is low, and use is safe and convenient.

The invention provides a combined type sample collecting and a detecting device and a sampling tube and a detecting tube thereof, and belongs to the technical field of medical instruments. The problemthat in the prior art, the risk of contact with a sample is likely to happen in the detection operation process is solved. The sampling tube of the combined sample collection and detection device comprises a sampling tube body for storing a sampling rod, and further comprises a sampling cover matched with one end of an opening in the sampling tube body, wherein one end of the sampling cover is opened, and the other end of the sampling tube body is in a blocked state. The sampling cover is detachably matched with the detection tube in the combined type sample collection and detection device through a first main connecting piece, and a first main through hole allowing a collected sample stored in the sampling tube body to penetrate through and then enter the detection tube is formed in thebottom side of the sampling cover. The combined type sample collecting and detecting device and the sampling tube and the detecting pipe thereof have the advantages that a sample circulation channel is formed by combining the sampling tube and the detecting pipe, and the risk that an operator makes contact with a sample in the detecting process is avoided.

The invention discloses FTO gene-modified porcine adipose-derived stem cells as well as a construction method and application thereof. The construction method comprises the following steps: 1) separating porcine adipose-derived stem cells (pADSCs); and 2) performing transient overexpression of the FTO gene by a liposome method, and constructing the FTO gene-modified porcine adipose-derived stem cells. The overexpression of FTO by pADSCs increases protein expression of cell cycle proteins CDK2 and CDK4, promotes transition from G1 phase to S phase of the cell cycle, and increases mRNA expression level of adipogenic differentiation key genes PPARgamma, FABP4 and C/EBP alpha. The stem cells are inoculated in a collagen sponge scaffold to construct a tissue engineering skin.

The invention relates to a closed-loop type discarded medical syringe needle processing device, and belongs to the field of medical instruments. The processing device comprises a sliding rod, a sliding sleeve is sleeved on the sliding rod, a fixed handle is fixed at the tail end of the sliding rod, a movable handle is fixed on the sliding sleeve, the fixed handle corresponds to the movable handle in position, a transversely-arranged U-shaped limiting frame is fixed on the sliding sleeve, limiting grooves are respectively arranged on two inner walls of the limiting frame, the two grooves correspond to each other in position, the inner width of the limiting frame corresponds to the diameter of a pintle, the distance between the two grooves corresponds to the diameter of the annular protrusion on the needle stem, and the opening end of the limiting frame extends out of the sliding sleeve. The needle point of the needle head is hidden in the pintle of the needle head to form a closed loop, the needle head is not easy to draw out, the structure is simple, the use is convenient, no sharp part is exposed, the possibility of being scratched by the needle point is completely eradicated, and the risk that medical staff are infected is avoided.

The invention relates to a mesenchymal stem cell chemical component limited serum-free culture medium comprising a basic culture medium and additive components, and the additive components comprise: rhPDGF-BB, rhFGF-b, rhTGF-beta1, polyvinyl alcohol, alpha-ketoglutaric acid, lipopolysaccharide, recombinant fibronectin, recombinant human albumin, recombinant apo-transferrin, recombinant human insulin growth factors and hydrocortisone. The invention also provides application of the mesenchymal stem cell chemical component limited serum-free culture medium. The composition is clear and stable; instability of serum culture is eliminated, meanwhile, the factors have a synergistic effect, the adipose tissue-derived stromal cells can be efficiently amplified, the cell cycle is shortened, proliferation is rapid, the yield of the cells cultured for three generations reaches two times or above of that of serum culture, cell consistency is good, and the biological characteristics and differentiation potential of the cells can be efficiently maintained.

The invention discloses an artificial intelligence intraoperative nerve monitoring stimulation current regulation and control system and a regulation and control method thereof. The system comprises a host, an interface box, a junction box and a stimulation current output adjusting device. The stimulation current output adjusting device is provided with an output port, the output port is connected with a stimulation current terminal instrument, and the stimulation current output adjusting device can regulate and control the current output by the junction box and output the current to the stimulation current terminal instrument. The invention also discloses an artificial intelligence intraoperative nerve monitoring stimulation current regulation and control method. The method comprises a step of setting the upper limit value of the output stimulation current by the host and a regulation and control step. The size of the output current can be regulated and controlled below the output value set by the host, regulation and control of the output current can be operated by personnel on an operating table, the defects in the prior art are overcome, and the hidden danger of hospital infection caused by regulation and control of the output current is eliminated.

A non-contact ophthalmic optical measuring scale comprises a light source; a convex lens is arranged on one side of the light source; a first light shielding plate is arranged between one side of the convex lens and the light source; a strip-shaped measuring hole and a positioning light seam are horizontally formed in the light shielding plate; a strip-shaped light shielding piece is arranged on the first light shielding plate; the light shading piece is arranged on the measuring hole and is in relative movable fit with the first light shading plate; a measuring light seam is formed in the light shading piece; a second light shading plate is arranged on the other side of the convex lens; two image dividing holes are longitudinally formed in the second light shading plate; and the two image dividing holes are perpendicular to the measuring hole and the positioning light seam in position. According to the non-contact ophthalmic optical measuring scale, an optical measurement mark is projected on a measured object according to an optical imaging principle, and comparison measurement on a same plane is completed, which aims to complete measurement of an eye structure in a non-contact state, so that eye stimulation to an examinee is reduced and the risk that the eye structure is damaged and eye infection is caused due to contact measurement is eliminated.