59 results about "Profound hypothermia" patented technology

The invention discloses a poly-lens profound hypothermia infrared detector pipe casing structure packaged in a Dewar. The poly-lens profound hypothermia infrared detector pipe casing structure is applicable to the packaging technology of a profound hypothermia pipe casing arranged in an infrared focal plane detector Dewar and provided with a plurality of cold optical elements. The poly-lens profound hypothermia infrared detector pipe casing structure comprises a detector chip, an electrode lead wire circuit substrate, a plurality of lenses, an optical filter, a supporting pipe casing, a press ring type cold shield, a chip, a lead wire silicon-aluminum wire and the like. The poly-lens profound hypothermia infrared detector pipe casing structure achieves poly-lens profound hypothermia pipe casing high-accuracy packaging through special measures and structural modes such as laser positioning drilling, the nested press ring type cold shield, the special alloy integrated supporting pipe casing and lateral surface fine tuning aligning, can effectively meet hypothermia infrared optical accuracy requirements, reduce the background in a chip view field, stray light and heat radiation of the whole Dewar and effectively remove low temperature deformation stress of the ceramic sintered pipe casing on the detector chip, and is applicable to other radiation cooling, thermoelectric refrigerating and the like.

This invention relates to a composition material, namely a glassivation freeze-storing liquid, for maintaining active of biological tissue cell stored in profound hypothermia, which makes up present technology deficiency to supply a glassivation freeze-storing liquid suitable for various tissue cells to maintain their active. The invention comprises the following compositions with its percentage by volume: 19.5-21.5 dimethyl sulfoxide, 14.5-16.5 acetamide, 3.5-5.5 propanediol, 4.5-6.5 2, 3-butanediol and 5-7 carbowax with its molecular weight being 6000. The invention has the advantages of allocation simplicity, operation convenience, lower price.

The invention discloses a profound hypothermia discharger adopting full carbon aerogel. The profound hypothermia discharger adopting the full carbon aerogel comprises a shell, a cold end and a hot end, an absorption layer is arranged on the cold end, and the absorption layer is composed of full carbon aerogel. A full carbon aerogel layer is arranged at the cold end of the profound hypothermia discharger, wherein one side of the full carbon aerogel layer is strong in absorption capability. Full carbon ultralight gel materials adsorbing helium have a high volumetric specific heat capacity within the temperature range of 10K and under 10K, and has a high thermal efficiency at the profound hypothermia under 10K. The invention further discloses a stirling cryocooler, the profound hypothermia discharge adopting the full carbon aerogel is applied to the stirling cryocooler to enable the stirling cryocooler to be good in stability and reliability in a deep low temperature zone, and high in refrigeration effect.

The invention relates to an aorta intracavity infusion tube. The aorta intracavity infusion tube comprises an infusion tube body, a pressurizing part and a suction tube, wherein the pressurizing part is sleeved out of the infusion tube body; and the suction tube and the infusion tube body are arranged in parallel. The invention provides the aorta intracavity infusion tube without requirement of profound hypothermia and capable of reducing influence of the temperature-reducing temperature-recovering process on functions of important organs of the whole body.

The invention discloses a profound hypothermia tube picking workstation for biological samples. The profound hypothermia tube picking workstation comprises a shell and a platform in the shell, whereina tube picking area is arranged above the platform, and a transfer barrel conveying area is arranged below the platform; the platform is provided with a liquid nitrogen tank corresponding hole and atransfer barrel butt joint hole; the transfer barrel conveying area is provided with a liquid nitrogen tank and a transfer barrel conveying mechanism; the shell is provided with a conveying opening corresponding to one end of the transfer barrel conveying mechanism; a tank opening of the liquid nitrogen tank is in butt joint with the liquid nitrogen tank corresponding hole, a positioning plate isfixed in the liquid nitrogen tank and provided with a tube picking receding groove; a sample box clamping manipulator, a test tube clamping manipulator and a tube jacking mechanism are arranged in thetube picking area; and the tube jacking mechanism comprises a test tube jacking rod which extends below the positioning plate in the liquid nitrogen tank and is used for jacking a test tube from thebottom end of a sample box, and the test tube jacking rod is connected with a jacking rod driving device. According to the profound hypothermia tube picking workstation, centralized tube picking of multiple storage devices is achieved, the device utilization rate is high, the tube picking efficiency is high, the layout in the workstation is reasonable, the structure is compact, and the overall size and occupied space of the workstation are small.

The invention provides a chemical treatment method for bone allograft. The chemical treatment method comprises the steps of bone cutting and profound-hypothermia freezing, and specifically comprises the steps of: cutting a bone material, cleaning the cut bone material by using purified water, processing the cleaned bone materials by using acetone, oxalate and alcohol in sequence, finally dewatering, lyophilizing the dewatered bone material for 15-25 hours at -40 DEG C, performing profound-hypothermia freezing below -70 DEG C, and performing irradiation sterilization to obtain a finished product of the bone allograft. According to the invention, the acetone, the oxalate and the alcohol are commonly used for processing so as to deactivate or remove cells and fat components inside bone marrow, meanwhile, by means of lyophilizing treatment and profound-hypothermia freezing, the immunogenicity of the bone allograft can be further removed, and better ossification capability and biomechanical performance of the bone allograft are kept at the same time. In addition, processing steps designed in the invention are simple, convenient and feasible and are convenient for scale production operation.

The invention relates to a medical profound hypothermia storage bag having a function of protecting a liquid inlet pipe. The storage bag comprises a bag body and a pipeline. A liquid outlet pipes and a liquid inlet pipe which are communicated with the inner and outer sides of the bag body are arranged at the port of the storage bag. The liquid inlet pipe is communicated with an external pipeline. The bag body is formed by banding an upper film and a lower film. Upper and lower two pairs of butterfly wings are arranged on the liquid outlet pipe. The upper and lower films extend out 3 to 5 mm of the liquid inlet pipe and the liquid outlet pipe, at the position close to the binding wire of the bag port. The lower butterfly wings of two liquid outlet pipes are close to one side of the liquid inlet pipe and are welded with the upper and lower films in order to cover the liquid inlet pipe. The medical profound hypothermia storage bag of the invention has no phenomenon of breaking the liquid inlet pipe in the process of freezing and unfreezing and no liquid inlet pipe is damaged. The invention has the function of excellently protecting the liquid inlet pipe.

The invention relates to an implanted biological material medical device and specifically relates to a preparation method and application of degreased sterilized profound-hypothermia allogeneic bone. The preparation method of the degreased sterilized profound-hypothermia allogeneic bone is characterized by comprising the following steps: utilizing human allogeneic bone as a raw material; cutting into bone sections, bone pieces and bone particles; cleaning and removing marrow; degreasing under a temperature of 20 to 40 DEG C; soaking by ethyl alcohol and cleaning by purified water; then packaging; storing the packaged product in an environment below -40 DEG C for at least 12 hours; then putting into a thermal-insulation container; putting ice cake s around the thermal-insulation container; packaging the container and performing irradiation sterilization by cobalt-60 with the dosage of 20 to 25kGy; obtaining the degreased sterilized profound-hypothermia allogeneic bone and storing the degreased sterilized profound-hypothermia allogeneic bone in an environment below -40 DEG C. The degreased sterilized profound-hypothermia allogeneic bone disclosed by the invention has the characteristics of applicability to bone defect bone graft repair, good biocompatibility and mechanical strength, small immunological rejection, high safety, union with graft field and gradual substitution in receptor self bone tissue.

The invention discloses a device for installing and fixing a profound hypothermia gaseous helium cold screen temperature sensor. The device comprises a gaseous helium cold screen, an installing support and a compressing device, wherein the compressing device comprises a compressing bolt, a fixed nut, a spring washer, a check nut, a heat insulation cushion, a temperature sensor, a filler, a heat conduction cushion block and the like; the installing support is installed on the outer side of the gaseous helium cold screen; the compressing device is installed on the installing support, and the endabuts against the gaseous helium cold screen; the heat conduction cushion block is installed on the gaseous helium cold screen; the fixed nut is welded onto the installing support; the compressing bolt is installed on the installing support through the fixed nut; the spring washer and the check nut are positioned below the installing support and are installed on the compressing bolt; the end of the compressing bolt abuts against the heat insulation cushion; the temperature sensor is installed between the heat insulation cushion and the heat conduction cushion block; and the filler is installed between the temperature sensor and the heat conduction cushion block. The device is applicable for the installation of various profound hypothermia temperature sensors, and meets the temperature measurement requirement of the gaseous helium cold screen in different stages.

The invention provides a preparation method of a decellularized biological amnion. The preparation method comprises cleaning, chemical treatment and freeze drying of the amnion. According to the method, a fresh amnion is washed clean with normal saline, residual blood on the amnion is washed away, the obtained amnion is treated with hydrogen peroxide, acetone, sodium dodecyl sulfate and alcohol again, after alcohol treatment, the obtained amnion is subjected to profound hypothermia freezing in an environment at subzero 70 DEG C for 16-25 h, and the obtained amnion is placed in a freezer dryer for freeze drying according to a set freeze drying curve. A finished decellularized biological amnion is obtained after irradiation sterilization. The amnion is jointly treated with hydrogen peroxide, acetone, sodium dodecyl sulfate and alcohol, immunogenic ingredients of an epithelial cell layer, a fibrous membrane cell layer and a sponge layer in the amnion can be effectively removed, meanwhile, a basilar membrane and a compact layer of the amnion are reserved, and the biological activity and biomechanical properties of the amnion are better reserved; on the other hand, the immunogenicity of the decellularized biological amnion can be further reduced through freeze drying treatment, and the immunological rejection of host cells is reduced. In addition, the preparation method of the decellularized biological amnion is simple and easy to implement, and large-scale production operation is facilitated.

The invention provides an autologous skull collection, treatment and storage device and a profound hypothermia preservation method. The autologous skull collecting, processing and storing device comprises a profound hypothermia refrigerator body; two bridging plates both fixedly mounted on the outer wall of one side of the deep hypothermia refrigerator body; a double-section screw rod rotationally mounted on the sides, close to each other, of the two bridging plates; two fixed connection seats both fixedly installed on the outer wall of one side of the deep hypothermia refrigerator body, wherein the double-section screw rod penetrates through the fixed connection seats and is movably connected with the fixed connection seats; two bearing plates respectively hinged to the two fixed connection seats; and two placing grooves. The autologous skull collection, processing and storing device and the profound hypothermia preservation method have the advantages that the skull flaps and accessories are convenient to take, the air exposure time of objects is shortened, the temperature rise speed of the objects is slowed down, and use is convenient.

The invention relates to a step-by-step direct-acting profound hypothermia electromagnetic valve which comprises an electromagnet assembly, a sleeve assembly, a main valve, an auxiliary valve, a valve body, an armature and a spring retainer ring. The electromagnet assembly and the sleeve assembly are locked through a screw; the valve body integrates the main valve and the auxiliary valve through the spring retainer ring, and the auxiliary valve is in floating connection to the armature via a hook and is combined in a step-by-step direct-acting form; and the valve body is connected with the electromagnet assembly through an external sleeving nut and is sealed by a gasket stationarily. The invention provides a step-by-step direct-acting electromagnetic valve structure form suitable for profound hypothermia. The electromagnetic valve can respond quickly and can be opened with zero pressure difference.

According to a low-temperature fluid flow measurement and calibration device and method, by designing the two subcoolers, it can be guaranteed that a medium is in a pure liquid state before entering an element to be measured and a weighing system, and by combining a standard meter comparison method and a weighing method, the measurement and calibration device which is simple in structure and high in precision is provided for the deep hypothermia field. Measurement and calibration in an actual working state in a real sense are realized. According to the device, the calibration working condition can be consistent with the actual working condition, working condition conversion is not needed in the calibration process, for example, if the actual working condition of the flow meter is 0.6 MPa and 83K, the calibration system can be directly adjusted to the working condition of 0.6 MPa and 83K, and the flow meter and the like are measured and calibrated. Meanwhile, two functions are provided, the flowmeter and the low-temperature pump can be tested, metered and calibrated respectively, the flowmeter and the low-temperature pump can be tested and calibrated at the same time through one-time operation, efficiency is high, and cost is low. According to the structure, multiple paths can be selected, and the calibration cost is reduced as much as possible.

The utility model discloses a perfusion flow guide device for avoiding deep hypothermic circulatory arrest in aortic total arch replacement, and belongs to the technical field of surgical medical instruments. Blood flow diversion from an aorta descendens to an aortic arch upper branch is carried out, the technical scheme is as follows: a main balloon is adopted to surround the outer wall of a mainflow guide pipe; the main balloon is connected with a main balloon air inlet pipe; the main flow guide pipe is connected with three branch flow guide pipes, the three branch flow guide pipes are respectively surrounded by branch balloons, the three branch balloons are respectively connected with branch balloon air inlet pipes, branch flow guide blocking clamps are respectively arranged on the three branch flow guide pipes, and the air inlet ends of the main balloon air inlet pipe and the branch balloon air inlet pipes are respectively connected with an external air delivery pipe. The three branch flow guide pipes with blocking balloons and suction devices are creatively applied to aortic total arch replacement, blood supply to the brain and the lower body is kept during far-end aorta anastomotic stoma suture, accordingly, deep hypothermic circulatory arrest is avoided, postoperative complications are greatly reduced, and the operation effect is improved.

The invention discloses a device and a method for measuring the deep hypothermia heat leakage rate of a material. The device comprises an inner cylinder, an outer cylinder, an inner flange, an outer flange and heat insulation foam. The open end of the inner cylinder is welded to the inner flange, the side face and the bottom face are covered with heat insulation foam, a liquid inlet pipe and an air outlet pipe are welded to the bottom face, a low-temperature valve is arranged on the liquid inlet pipe, and a low-temperature valve, a pressure gauge and a flow meter are connected to the air outlet pipe. The outer cylinder and the inner cylinder are concentrically arranged, the open end is connected to the inner flange through a flange, a liquid inlet pipe is welded to the bottom face, meanwhile, an air outlet is formed, and the side face and the bottom face are covered with heat insulation foam. Threaded holes are formed in the outer edge of the inner flange in the circumferential direction. The outer side surface of the outer flange is provided with a small part made of a test material, the remaining area is covered with heat insulation foam, and the inner side is fastened on the inner flange through peripheral bolt and nut assemblies. The inner cylinder and the outer cylinder are axially and vertically arranged, and the flange is below. The outer cylinder, the inner flange and the outer flange are connected through the same set of bolt and nut assembly. A polytetrafluoroethylene gasket is arranged between the outer cylinder and the inner flange. The high-precision measurement method for the deep hypothermia heat leakage rate of the material is realized.

The invention discloses a portable profound hypothermia cold therapy soft cabin, and belongs to the technical field of cold therapy equipment. The portable profound hypothermia cold therapy soft cabin comprises a cold therapy cabin body and a control console, and the control console and the cold therapy cabin body are connected through an L-shaped ventilation pipe; an air inlet channel and an air outlet channel are arranged in the L-shaped ventilation pipe; the cold therapy cabin body comprises an outer surface layer and a lining layer, and an inflation supporting cavity is formed between the outer surface layer and the lining layer; a cold therapy cavity is formed in the inner side of the inner layer; a through hole is formed in the top of the cold therapy cabin body; a soft cabin door is arranged on the front side of the cold therapy cabin body; the side wall of the cold therapy cabin body is connected with a first cylindrical belt and a second cylindrical belt; a control screen is arranged on the control console; a control panel, a centrifugal fan, a liquid nitrogen release device and an air blower are arranged in the control console; and the centrifugal fan, the liquid nitrogen release device and the air blower are all electrically connected with the control panel. According to the portable profound hypothermia cold therapy soft cabin, the cold therapy cabin body and the control console are independent, are stored into a whole when not in use, and are convenient to move; and meanwhile, an L-shaped zipper directly communicated with the top of the cabin body is arranged, so that the user can conveniently enter and exit the cabin body without bending down.

The invention discloses an adsorption type frozen pipe transmitting mechanism comprising an adsorption transmitting mechanism unit and a vacuum pneumatic mechanism. Automatic control units of the adsorption transmitting mechanism unit and the vacuum pneumatic mechanism are connected electrically. The adsorption transmitting mechanism unit consists of a telescopic pipe mechanism and a fixed seat; and the telescopic pipe mechanism is connected with a pipe picking three-axis robot by the fixed seat. The adsorption transmitting mechanism unit and the vacuum pneumatic mechanism form a negative-pressure gas circuit. A lower end of a sucker pipe is in adsorptive connection with a frozen pipe based on a negative pressure generated by the negative-pressure gas circuit. The adsorption type frozen pipe transmitting mechanism can be applied to a profound hypothermia environment. A single frozen pipe can be taken out of or placed in a frozen plate, thereby realizing the full-automatic storage process of a single frozen pipe access sample; the activity of a biological sample can be guaranteed; the work efficiency and the security coefficient of the operator can be improved; and occurrence of a related accident can be avoided.

The invention discloses an absorption type resonant cavity for measuring the sample surface state in a profound hypothermia high-intensity magnetic field. The resonant cavity mainly consists of a coaxial cable assembly, a microwave separating plate and panel installing type connector, a resonant cavity cover plate, a resonant cavity, a copper sheet A, a copper sheet B, a screw A, a screw B and the like. The resonant cavity is mainly characterized in that microwaves are guided into the resonant cavity in the profound hypothermia high-intensity magnetic field environment by coaxial cables, and the combination of the microwave measurement and the profound hypothermia high-intensity magnetic field transporting measurement is realized. The system provides an effective tool for studying the profound hypothermia magnetic transportation of the surface state of two-dimensional nano-structure materials such as topological insulators.

The invention provides a four-branch artificial blood vessel for arcus aortae portion replacement perfusion. The artificial blood vessel comprises a body artificial blood vessel for introducing blood for perfusion and a brachiocephalic artery branch artificial blood vessel, a left common carotid artery branch artificial blood vessel and a left subclavian artery branch artificial blood vessel which are communicated with the body artificial blood vessel. An arterial perfusion branch artificial blood vessel communicated with extracorporeal circulation is further arranged on the body artificial blood vessel. Perfusion can be performed on the bilateral whole brain and the whole body during operation, the brain perfusion during operation during profound hypothermia circulation arrest is ensured to the maximum extent, postoperative neurological complications can be reduced, the operation technique can be simplified, and the operation time is shortened, so that the purposes of improving the operation success rate and reducing related operation complications are achieved.

The invention relates to a cryopreservation tube taking device for deep hypothermia. The cryopreservation tube taking device comprises a sleeve piece, a moving assembly, a clamping jaw assembly, a clamping assembly and a driving assembly; the moving assembly is arranged in the sleeve piece; the clamping jaw assembly is connected to the moving assembly and used for clamping the cryopreservation tube, the clamping jaw assembly is in linkage with the moving assembly, and the moving assembly can drive the clamping jaw assembly to be switched between a clamping position and a loosening position; the clamping assembly is arranged in the sleeve piece, and the clamping assembly is in linkage with the moving assembly; the driving assembly is connected with the moving assembly and used for driving the moving assembly to ascend or descend in the sleeve piece; when the moving assembly ascends, when part of the cryopreservation tube clamped by the clamping jaw assembly enters the sleeve piece, the clamping assembly clamps the cryopreservation tube; and when the moving assembly descends, the clamping assembly releases the cryopreservation tube. According to the cryopreservation tube taking device, clamping of the clamping jaw assembly on the cryopreservation tube and movement of the clamping jaw assembly and the cryopreservation tube can be achieved through linkage of the moving assembly, and meanwhile the moving assembly can be in linkage with the clamping assembly during movement so that the clamping assembly can clamp the cryopreservation tube.

The invention belongs to the technical field of single pipe grabbing, and particularly relates to a single pipe grabbing control system in a profound hypothermia cold chain environment. The single pipe grabbing control system in the deep hypothermia cold chain environment is good in using effect. The single tube grabbing control system in the deep hypothermia cold chain environment comprises a processor circuit, a first stepping motor driving circuit, a second stepping motor driving circuit, a third stepping motor driving circuit, a heating control circuit, a temperature detection circuit and a power supply circuit. The control circuit is characterized in that a signal transmission port of the processor circuit is respectively connected with a signal transmission port of the first stepping motor driving circuit, a signal transmission port of the second stepping motor driving circuit, a signal transmission port of the third stepping motor driving circuit, a signal transmission port of the heating control circuit and a signal transmission port of the temperature detection circuit.