33 results about "Skin expander" patented technology

Provided are skin incision instrument to efficiently incise minimal portions and a method for incising skin with the skin incision instrument. The skin incision instrument according to the present invention comprises a holder, a needle, a needle drive unit, a skin expander, and a reader, wherein the needle and the skin expander are mounted at an end of the holder, the needle drive unit is mounted in the holder, the needle drive unit is capable of forming an incision portion in a skin caused to contact the end of the holder by moving the needle, the skin expander is capable of expanding skin at both sides of the linear incision portion away from the linear incision portion in a direction to expand the linear incision portion, and the reader determines position of the skin expander by rotating the skin expander around the needle in order to adjust an angle to 45 degrees or more and 90 degrees or less wherein the angle is a smaller angle among angles formed by the representative line connecting both ends of the linear incision portion and the direction to expand skin at both sides of the linear incision portion with the skin expander, and minimal portions are efficiently incised.

The invention aims at solving the problem which exists in an existing skin expander that longitudinal stress is not uniform due to the effect of gravity and overcoming the disadvantages that the trauma size is large caused by the implantation of the existing expander, and a solid skin expander which is relatively simple and reasonable to operate, safe and reliable and low in using cost is provided. To achieve the purpose, mature high water-absorbing resin in the current market is selected as filler of the expander, by utilizing the characteristic that the high water-absorbing resin is expanded after absorbing water, an expanding bag of the expander is gradually expanded, and division and expansion of skin tissues are supported. According to specific technical scheme, the skin expander comprises the expanding bag and a connecting catheter and is characterized in that high water-absorbing filler is arranged inside the expanding bag.

The invention discloses a skin dilator, which comprises an expansion bag, a pressure indicating bag, a pressure indicating tube, a water injection connecting pipe and a water injection pot; one end of the expansion bag communicates with one end of the water injection pot through the water injection connection tube; One end of the pressure indication bladder is in communication with the pressure indication tube, and the pressure indication tube is fixedly connected to one end of the water filling pot; the pressure indication tube is pre-filled with gas, and the pressure indication bladder is pre-filled with colored liquid . Implementing the technical scheme of the invention can protect users safely and effectively, and seek medical treatment in time.

The invention discloses a degradable skin expander. The skin expander comprises a bag which has the tissue regeneration inducing function and is made of an absorbable medical membrane; the absorbablemedical membrane is mainly made from degradable polyurethane, in the skin opening process, cells are promoted to crawl and grow through a membrane support to form incremental skin, and the skin expander can be used for skin grafting and scar repair. The skin expander has the advantages of being fast in skin growth, low in infection rate and high in wound healing speed, and no second operation is needed for removing the skin expander.

The invention discloses a cerebral edema simulator. The upper end of a support frame is provided with a lower shell on which an injector is arranged; the upper end of the lower shell is provided with a spherical shell formed by an upper shell; the top of the upper shell is provided with a head cover, the upper part is provided with an exciting coil, and the lower part is provided with a detection coil; the injector is communicated with a skin expander arranged in the spherical shell by a communication pipe, sodium chloride solution with the same electrical conductivity as normal brain tissues is filled in the spherical shell, and sodium chloride solution with the same electrical conductivity as cerebral edema tissues is injected in the skin expander. The skin expander forms irregular cerebral edema zones in different positions in a skull model to truly stimulate the existing situation of cerebral edema in skull, the severity of cerebral edema can be stimulated by regulating the concentration (namely electrical conductivity) of sodium chloride solution in the skin expander, and the geometric size of cerebral edema can be stimulated by regulating the volume of sodium chloride solution in the skin expander. The invention can be applied to the research of a cerebral edema monitoring technology.

The invention relates to a syndactylia skin expander. The syndactylia skin expander comprises an expander main body, a metal core guide pin and a water injecting vale, wherein the expander main body sleeves the upper part of the metal core guide pin, the water injecting vale communicates with the expander main body through a capillary channel, the water injecting valve injects normal saline into the expander main body, the upper part of the expander main body is expanded to form the columnar shape, and the lower part of the expander main body is expanded to form the ball shape. Compared with the prior art, the syndactylia skin expander has the advantages that syndactylia separation can be completed at once, skin grafting is not needed, the operation is safe and reliable, and the surgery is simplified.

The invention relates to the technical field of medical equipment, in particular to a disposable central vein puncture kit. At present, after a puncture needle penetrates through a central vein, a guide steel wire is arranged, the puncture needle is withdrawn, the skin is expanded through a skin expander, and a central vein catheter is arranged along the guide steel wire during domestic venous transfusion cathetering. The defects are that 1, the guide steel wire possibly touches the heart, so that arrhythmia is caused; 2, the skin is expanded through the skin expander, so that the guide steel wire is possibly bent, the catheter is difficult to arrange, and puncture fails; and 3, the catheter is thick, and the central venous catheter related infection probability is high. The disposable central vein puncture kit comprises a central vein catheter and a puncture needle, wherein a catheter sheath is arranged outside the puncture needle and has an easily torn breakage indentation. During use, the central vein catheter is arranged through the catheter sheath. The operation is easy, the guide steel wire is not required, the skin is not required to be expanded, the injury of a patient is lightened to a certain degree, and the related infection occurrence rate of the catheter is reduced.

The invention discloses a skin expander with VEGF slow-release PCL coatings and a manufacturing method thereof. The skin expander comprises an expander capsule, a water manifold and an injection valve; one end of the water manifold is fixedly connected with the injection valve, and the other end of the water manifold is fixed to the bottom of the expander capsule; the expander capsule housing is prepared by a plurality of medical silica gel layers, and external surfaces (except the bottom surface) of the expander capsule housing are additionally provided with the VEGF slow-release PCL coatings; and the VEGF slow-release PCL coatings are additionally installed in a manner of pouring by using PCL and silica gel and then dip-coating by using heparin/VEGF. According to the VEGF slow-release PCL coating expander, VEGF slow-release PCL coatings are additionally installed on external surfaces of a housing of a traditional expander, VEGF stimulation with effective concentration can be uniformly and continuously given to the whole skin at the external surfaces of the expander capsule housing during the whole period of embedding the expander, angiogenesis of expanded flaps is promoted, and therefore expanding speed can be accelerated, and generation of postoperative flap avascular necrosis can be prevented.

The invention discloses a puncture device, a trachea cutting device and a trachea cutting method. The trachea cutting device comprises a marking device for marking the lengths of an incision line and an incision, a tool for cutting the skin along the incision line, a puncture device for vertically penetrating into a trachea in the incision, a verifying device for verifying whether the puncture device penetrates into the trachea or not, a guide wire for playing a guide role, a skin expander for expanding the skin of a puncture point, a long support tube for guiding a subcutaneous tunnel expander and a trachea device to enter the trachea, a tunnel expander for creating and expanding a channel clearance between the skin surface to the trachea to form a subcutaneous tunnel, and a trachea device communicating with the trachea and capable of absorbing a liquid from the trachea. The trachea cutting method implemented by adopting the trachea cutting device has the characteristics that the size of the incision is accurately estimated, the judgment accuracy of puncture is improved, an over-large puncture depth is avoided, and the trachea cutting security can be effectively improved.

The invention discloses a skin expander and a use method thereof. The skin expander structurally comprises a skin expansion air bag, wherein one side of the skin expansion air bag is an adhesive side,a water injection pipe is connected to the skin expansion air bag, the other end of the water injection pipe is connected with a water injection kettle, a colored liquid is accommodated in the waterinjection kettle, a waterproof electronic pressure sensor is arranged in the skin expansion air bag, and a pressure indicator is connected to the water injection pipe. The skin expander is reasonablein design, the use method is safe and efficient, a user is protected against fear, mechanical energy expansion of skin is performed through the skin expansion air bag, besides, too high pressure of the skin expansion air bag can be avoided, and injury to a patient due to excessive skin expansion is prevented.

The invention relates to a skin expander, in particular to a negative pressure type skin external expander. The negative pressure type skin external expander comprises an air cushion type negative pressure cover, a right-angle conversion pipe, a connecting pipe and a negative pressure generation device, wherein one end of the right-angle conversion pipe is connected with the top of the air cushion type negative pressure cover, the other end of the right-angle conversion pipe is connected with the connecting pipe, and the connecting pipe is connected with the negative pressure generation device. The negative pressure type skin external expander can be sufficiently attached to different curved-surface portions of the human body, can also be attached to the portions with much hair, can form a sealed partial space, is simple in operation, is convenient to adjust, can eliminate the fear of a patient, resolves the problem that it is difficult for the patient to see a doctor, and improves work efficiency.

The invention discloses a combined type skin expander which solves the technical problems that a skin expander used in the prior art can not expand the skin in any direction and a wound surface covering device for vacuum sealing drainage in the prior art can not allow a wound surface to be observed at any time. According to the technical scheme, the combined type skin expander comprises a fixed component and a moving component; the fixed component is located in the moving component and comprises a first cover board, a second cover board, a first porous foam-shaped structure, a first negative pipe, a first washing pipe, a first annular air bag, a traction line, a traction hook and a sealing bolt, and the moving component comprises a third cover board, a second porous foam-shaped structure, a second negative pipe, a second washing pipe and a second annular air bag; the elements of the fixed components and the elements of the moving component can be cut and assembled according to the wound surface and the body surface. The combined type skin expander has the advantages that the skin can be expanded in any direction, the wound surface and the expanded skin can be observed at any time, and safety is high.

The invention belongs to the field of medical instruments, and particularly relates to a skin expansion protector for the surgery department. The inner wall of the bottom part of a fixed cavity of a fixed seat is rotationally connected with a driving shaft; a first rotating shaft and a second rotating shaft are clamped on two connecting seats on the sides, close to each other, of two spoon heads respectively; the ends, close to each other, of the first rotating shaft and the second rotating shaft extend into the fixed cavity; the driving shaft and one end of the first rotating shaft are fixedly sleeved with bevel gears engaged with each other; the interior of the fixed cavity is rotationally connected with a fixed shaft; the driving shaft and the fixed shaft are each fixedly sleeved with abelt wheel; the fixed shaft is in threaded connection with a movable plate; one side of the movable plate is fixedly connected with a toothed plate; one end of a second rotating shaft is fixedly connected with a gear engaged with the toothed plate; a hand-holding column is connected onto a rectangular seat at the top part of the fixed seat; and the top part of the hand-holding column is fixedly connected with a handle. A skin expander can be effectively prevented from being cracked, and the pain of a patient is reduced; and the spoon heads are convenient to install, remove and use.

The invention discloses a skin expander for large wound healing and a use method, and relates to the technical field of medical auxiliary instruments. The skin expander for large wound healing comprises hook claws and adjusting boxes, the multiple adjusting boxes are arranged in an array mode in the horizontal direction, the hook claws are symmetrically arranged on the lower portions of the two sides of each adjusting box, the tops of the hook claws are fixedly connected with a rotating frame, and the rotating frame is rotationally connected with the lower end of an L-shaped connecting rod; the upper end of the L-shaped connecting rod is fixedly arranged on the bottom face of the connecting plate, an adjusting rod is integrally formed on one end face of the connecting plate, and a rack is arranged on one side face of the adjusting rod. The adjusting box is hollow with two open ends, and the adjusting rods at the two ends of the adjusting box are inserted into the same adjusting box in a sliding mode. The device can effectively avoid the pain and discomfort of a patient caused by the pulling friction between a binding line and the skin and the relative sliding between the claw and the skin, and meanwhile, the device can be adjusted according to the lines of a wound, and is good in adaptability.

The invention discloses a central venous catheter. The central venous catheter comprises a double-cavity catheter body, a connection seat and an extension tube in sequential connection and communication. A main cavity of the catheter body is provided with a needle seat structure at an opening position of the connection seat, a puncture needle can be inserted into the main cavity of the catheter body through the needle seat structure, and the needle seat structure can be further connected with a syringe. The double-cavity catheter body is 16-20cm and graduated on the surface, the double-cavity catheter body is provided with catheter fixing wings, and one surface, adhered to human skin, of each catheter fixing wing is provided with an adhesive structure. The central venous catheter has advantages that utilization of guide wires in a puncture catheter of a deep venous system is avoided, conventional use of a skin expander can be omitted, an operation process is simple, convenient and easy to control, and firmness in skin fixation, low human injuries, safety and reliability are realized.

The invention provides a skin dilator applied to elf ear reconstruction, and the skin expander comprises a dilation bag which is implanted into the skin at the position where elf ear is planted and is used for dilating the skin; a catheter which is used for conveying filling liquid into the expansion bag to enable the expansion bag to expand; and an injection mechanism which comprises a storage pipeline, an adjusting unit and a driving unit, wherein the driving unit is connected with the adjusting unit, and the driving unit provides slow and constant-speed power for the adjusting unit. The invention has the beneficial effects that the driving unit arranged on the injection mechanism can drive the buffer mechanism to slowly move at a constant speed, manual pushing for injection is not needed during injection, the injection speed can be unified during operation by different workers, pain of a patient caused by the too high injection speed can be effectively prevented, and pains caused by too fast tension of the expansion bag can be prevented.

The invention relates to the field of medical instruments, and particularly relates to a skin expander for plastic surgery. The skin expander comprises a main bag and at least one annular auxiliary bag, wherein the cross section of the main bag is circular; a catheter used for injecting normal saline is arranged on the main bag; one end of the catheter communicates with the interior of the main bag; the annular auxiliary bags are coaxially arranged on the outer side of the main bag in a sleeving mode; when one annular auxiliary bag is arranged, the main bag communicates with the annular auxiliary bags through flow limiting connecting pipes; when multiple annular auxiliary bags are arranged, the diameters of the annular auxiliary bags are different; the large annular auxiliary bag is coaxially arranged on the outer side of the small annular auxiliary bag in a sleeving mode; the main bag communicates with the adjacent annular auxiliary bag through one flow limiting connecting pipe; everytwo adjacent annular auxiliary bags communicate through one flow limiting connecting pipe; and the flow limiting connecting pipes are connected when hydraulic pressure reaches a certain value. The expander can expand skin step by step.

The invention discloses a disposable sterile multi-serous cavity effusion drainage device. The device comprises a skin expander and a built-in tube, wherein the skin expander is a bullet-shaped cylinder; a conical tip with external threads is arranged on the lower portion of the cylinder; an axial breaking seam is formed in the peripheral wall of the conical tip and breaks the wall of the conicaltip; the built-in tube is arranged in an inner cavity of the skin expander in a sliding mode; and the lower end of the built-in tube is located on the lower portion of an inner cavity of the conical tip. The drainage device has the beneficial technical effects of being simple in structure, convenient to operate and capable of enabling effusion in the organ of a patient to enter an effusion tank through the built-in tube and a drainage tube, and has the characteristics of shortening the drainage treatment operation time, relieving pain of the patient, improving the operation efficiency of medical staffs and reducing the cost.