43results about How to "Less prone to infection" patented technology

The invention relates to an elastic skin expander, a skin traction system of the elastic skin expander and a hook rod fixing system of the elastic skin expander. The elastic skin expander is clinically applied to the orthopedics department and the plastic surgery department and can is adjustable in pressure. The hook rod fixing system comprises an adjusting component and a fixing hook device, wherein the adjusting component comprises a screwed rod, a wheel-fixing nut, a pressure-adjusting component, a pressure-adjusting spring, a slide casing pipe and a fixing nut; the pressure of the pressure-adjusting component applied to the pressure-adjusting spring is read through a slide casing pipe pressure scale meter under the matching between the pressure-adjusting component, the pressure-adjusting spring and the slide casing pipe; the fixing hook device is arranged between the slide casing pipe and the fixing nut and comprises a body part and a hook part which are connected through screw threads or connected in a fastening way or integrally molded.

The invention discloses a bone malformation correction or fracture reduction and fixation device and a method for processing the same. The bone malformation correction or fracture reduction and fixation device comprises external fixation brackets or one and more external fixation plates, wherein the external fixation brackets or the external fixation plates are used for fixing fixation needles inserted into the bone tissues; at least one end of each fixation needle is exposed outside the skin, and the exposed end of the fixation needle needs to be fixed; the external fixation brackets consist of a first fixation bracket and a second fixation bracket; the external fixation plates are used for fixing all the fixation needles inserted into the bone tissues needing to be fixed. The method for processing the bone malformation correction or fracture reduction and fixation device comprises the following steps of: (1) collecting the information of an image before reducing the bone; (2) reducing the bone virtually by using a computer; (3) designing the structure of the bone malformation correction or fracture reduction and fixation device; and (4) processing the bone malformation correction or fracture reduction and fixation device. The bone malformation correction or fracture reduction and fixation device provided by the invention has a function of automatically reducing the bone, is reasonable in structure, has a good bone fixing effect and can be used for effectively overcoming the defects of difficult bone malformation correction or fracture reduction, complex operation on malformed or fractured bone and excessive dependence on the clinical experience of a doctor of the existing bone malformation correction or fracture reduction and fixation mode.

The invention relates to a production method of a porous sponge or film for human serum albumin. The production method comprises the following steps: dissolving the human serum albumin into buffer solution with pH of 7.0-10.0, slowly adding glutaraldehyde, and adjusting the concentration of the glutaraldehyde to obtain human serum albumin gels with different degrees of cross linking; cleaning the gels to remove the buffer solution in the gel, infiltrating by 5-30% of glycerin or 5-30% of glycerin solution containing thrombin, freezing and drying to obtain the porous sponge or film for the human serum albumin containing or not containing the thrombin. According to the method provided by the invention, the prepared porous sponge or film for the human serum albumin can absorb blood on a surface of the wound to form a coagulation net rack through a porous structure thereof, so that the blood is stopped quickly; meanwhile, the production method has the characteristics of free antigenicity, good biocompatibility and ability of degrading, simulating cell division and promoting union, and has remarkable progress compared to the conventional medical materials.

The invention provides a multifunctional elbow joint replacement prosthesis which comprises a humerus assembly, an ulna assembly, a radius assembly and a pin shaft assembly. The humerus assembly comprises a humerus handle, a yoke and a capitulum humeri. The ulna assembly comprises an ulna handle, an ulna neck and an ulna head. The radius assembly comprises a radial head and a radial bone marrow needle. The pin shaft assembly comprises a pin shaft outer nail of a hollow barrel structure and a pin shaft inner nail inserted into the pin shaft outer nail. One end of the pin shaft inner nail is provided with an anti-disengagement piece used for preventing the whole pin shaft inner nail from entering the pin shaft outer nail. The other end of the pin shaft inner nail is provided with a locking piece. The pin shaft assembly enables the ulna assembly to pivot around a shaft and fixes the capitulum humeri to a first convex lug. The multifunctional elbow joint replacement prosthesis accords with human body daily behavior movement characteristics, has the good stability and safety, can achieve partial replacement or whole replacement, improves biocompatibility with the sclerotin, and is not likely to cause looseness or infection or instability or other complications and long in service life.

The invention discloses an exosome and hyaluronic acid combined wound dressing, and a preparation method and application thereof. The wound dressing is formed by wrapping mesenchymal stem cell exosome with hyaluronic acid hydrogel, and the hyaluronic acid hydrogel is obtained by repeatedly freezing and unfreezing a hyaluronic acid aqueous solution and then cross-linking the hyaluronic acid aqueous solution with carbodiimide hydrochloride and adipic dihydrazide. Correspondingly, the invention also discloses a preparation method of the exosome and hyaluronic acid combined wound dressing and application of the exosome and hyaluronic acid combined wound dressing in medicines or materials for promoting wound healing. The wound dressing combines the characteristics of the exosome of the mesenchymal stem cells and the hyaluronic acid hydrogel, can promote revascularization and collagen synthesis after being in contact with a wound surface so as to repair damaged tissues, is safe, reliable and good in biocompatibility, has an obvious promoting effect on healing of the wound surface, and is not easy to cause infection, and no scar is left after healing.

The invention discloses a corneal contact lens and an intraocular illumination system. The corneal contact lens comprises a corneal contact lens body, a flexible circuit board, a wireless electric energy receiving circuit and a light-emitting element. The flexible circuit board, the wireless electric energy receiving circuit and the light-emitting element are deployed in a designated area in the corneal contact lens body. The wireless electric energy receiving circuit and the light-emitting element are integrated on the flexible circuit board. The wireless electric energy receiving circuit iselectrically connected with the light-emitting element to supply power for the light-emitting element. The corneal contact lens can be directly worn on the eyes of a patient, and the light emitted bythe light-emitting element after electrification directly penetrates into pupils to be diffused to the parts needing lighting of eye grounds. The soft corneal contact lens body completely wraps the light-emitting element, the biocompatibility and wearable property of the corneal contact lens are verified, the corneal contact lens does not bring any additional eye hurt to the patient while the demand of lighting the eye grounds of the patient is met, and is safe and practical.

The invention discloses a non-invasive medication device for gynaecology nursing. The non-invasive medication device is characterized by comprising a cylindrical liquid mixing cylinder, a liquid injecting assembly, a pressurizing assembly, a soft plastic pipe and a medicine plug, wherein the liquid mixing cylinder comprises an upper cylinder part and a lower cylinder part which are integrally assembled; the liquid injecting assembly is used for injecting liquid medicines to the liquid mixing cylinder; the pressurizing assembly is used for performing pressurizing on the liquid mixing cylinder;a first syringe needle and a second syringe needle are separately fixed to the two ends of the soft plastic pipe; liquid medicine flow holes are formed in the first syringe needle and the second syringe needle; the first syringe needle is detachably mounted at the bottom end of the lower cylinder part; the medicine plug is placed in the vagina of a patient; and the shape of the medicine plug is arod-shaped housing of which two ends are provided with smooth cambered surfaces. Liquid medicines are convenient to sprinkle through the non-invasive medication device disclosed by the invention, theliquid medicines can be sprinkled out in a pressure maintaining manner, and medication is rapid and quick.

The invention provides a young silkworm cooperative-rearing method determining newly-hatched silkworm amount based on egg amount and adopting a mulberry leaf attraction based newly-hatched silkworm collecting method. The method comprises the steps that newly-hatched silkworms are collected, and young silkworms are reared. The step of collecting the newly-hatched silkworms includes the sub-steps that silkworm eggs are spread, wherein the silkworm eggs are poured into silkworm boxes and are arranged to be flat, and moisture-regained lime powder is scattered; dark protection is performed, wherein the silkworm boxes are vertically stacked and are covered with wetted black cloth; sensitization is performed, wherein the cloth is uncovered and lamps are turned on after hatching; mulberry leaves are provided for hatched silkworms, wherein small silkworm nets and newly-hatched silkworm collecting film nets are arranged in the silkworm boxes in sequence, and the mulberry leaves are scattered; nets are lifted, wherein the newly-hatched silkworm collecting film nets are rolled and transferred to other silkworm boxes and then are unfolded again; unhatched silkworm eggs are processed, wherein the hatching of silkworms is hastened in a centralized mode. The step of rearing the young silkworms comprises the sub-steps that leaves are harvested, wherein the mulberry leaves are harvested, rotted leaves are removed, and fresh leaves are put in a mulberry leaf storage pool and are stored with flowing water; the mulberry leaves are given, wherein the mulberry leaves are evenly scattered into the silkworm boxes. The method has the advantages of being conductive to labor saving, improving the security coefficients of silkworm rearing and silkworm egg yield and increasing the rearing amount and incomes of silkworm raisers.

The invention discloses a lingualis exercising device. The device comprises a tooth socket, a tongue plate negative pressure airbag, an air cylinder airbag, an upper fixed block and a lower fixed block are fixedly installed on the tooth socket, and the upper fixed block is fixedly installed on an upper tooth socket portion; a first rotary shaft is movably installed in the upper fixed block, an aircylinder is fixedly installed on the first rotary shaft, and a tongue plate connecting rod is fixedly sleeved with a tongue plate shaft; a tongue plate is fixedly installed on the side, away from thetongue plate shaft, of the tongue plate connecting rod, the lower fixed block is fixedly installed on a lower tooth socket portion, and a supporting rod is fixedly installed on a second rotary shaft;the side, away from the upper fixed block, of a hole passage is fixedly connected with a tongue plate connecting rod through a pipeline, and the hole passage is formed in the tongue plate connectingrod. The lower portion of the tongue is sucked through the negative pressure of a tongue plate, the tongue is assisted in rolling backward through the opening and closing of the oral cavity, thereforethe effect of exercising the tongue root and the tongue lingualis is achieved, the lingualis exercising can be completed just in the oral cavity, the infection phenomenon cannot easily occur, the device is practical and sanitary, and the using is convenient.

The invention provides a disposable vertebral balloon type cervical dilator comprising a deepened and extended main channel pipe, wherein a suction hole is formed in the drainage end of the deepened and extended main channel pipe; the deepened and extended main channel pipe comprises a water and gas injection channel, a local anesthesia drug channel and a straight operating channel; a water and gas injection sealing balloon injection outlet is formed in the top of the water and gas injection channel; the bottom of the water and gas injection channel is communicated with a water and gas injection inlet; a water and gas injection sealing balloon is arranged outside the water and gas injection sealing balloon injection outlet; a front end local anesthesia drug outlet is formed in the top of the local anesthesia drug channel and is located between the suction hole and the top of the water and gas injection sealing balloon; and a local anesthesia drug inlet is formed in the bottom of the local anesthesia drug channel. By using the disposable vertebral balloon type cervical dilator, the dilating process can be finished at one step in the local anesthesia drug administration process, the pain of a patient can be relieved, cervical laceration can be avoided, secretions can be sucked through negative-pressure suction while cervical dilating, and infection is not easily caused.

The invention discloses a special clinical foreign matter clamp for the ophthalmology department. The special clinical foreign matter clamp comprises a clamp main body, a solution circulation guide unit and an eye illumination unit; a mounting plate is fixedly connected to the right end of the clamp main body; a solution bottle is fixedly connected to the right side face of the mounting plate; a cover is mounted at an opening in the right end of the solution bottle; two liquid outlets distributed at equal angles are formed in the left portion of the side face of the solution bottle; the solution circulation guide unit is mounted on the inner side of the clamp main body; the eye illumination unit is arranged on the front side of the clamp main body; the special clinical foreign matter clamp further comprises a cylindrical block; the cylindrical block is fixedly connected to the right portion of the inner side of the clamp main body; the thickness of the connecting position of the clamp main body and the cylindrical block is small; and two evenly-distributed through holes are formed in the cylindrical block. The special clinical foreign matter clamp for the ophthalmology department has a disinfection function when in use, is not easy to cause eye infection of a patient when clamping the foreign matters, and is very convenient.

The invention provides a vascular suture for laparoscope, and belongs to the field of medical apparatus and instruments. The vascular suture comprises a suture body, a suture needle and a tail clamp, the tail end of the suture needle is fixed to one end of the suture body, the other end of the suture body is provided with a tail barb area, tail bards are arranged on the suture body in the tail barb area, the tail bards are arranged by inclining to the end where the suture needle is located, the tail clamp is of a pipe type structure and arranged on the tail barb area in a sleeving mode, and limiting barbs for clamping the tail barbs are arranged on the inner side of the tail clamp. The problems are solved that at present, when continuous suture is conducted on the vascular suture, under the condition of straining the suture body, the tail end of the suture is likely to be pulled into sutured tissue, so that the tail end cannot be found, knotting cannot be conducted, suturing even needs to be conducted again sometimes, and time and energy are wasted.

The invention provides a single-hole pneumoperitoneum-free operation device for the general surgery department. The invention belongs to the technical field of medical instruments. According to the technical schemes of the invention, the device comprises an outer sleeve body, and a supporting assembly is installed on one side of the outer sleeve body and located on the annular side of the outer sleeve body. The abdominal wall of a patient can be separated from organs in the abdominal cavity without introducing CO2 into the abdominal cavity of the patient to establish pneumoperitoneum.