582 results about "Tourniquet" patented technology

The invention provides a first-aid tourniquet pressure monitoring and automatic alarm system, and relates to the technical field of pressure monitoring. The system comprises a biological reaction monitoring module, a pressure adjustment analysis module, a real-time pressure adjustment module, a safety threshold detection module and an emergency response activation module. According to the invention, through real-time monitoring of biological reactions, changes of micro blood flow, skin electrical impedance and tissue morphology of a patient after the patient uses the tourniquet are captured, so that monitoring of individual reactions is more comprehensive, the safety and effect of pressure are evaluated in combination with the actual physiological state of the patient, monitoring is more dynamic and personalized, and the monitoring accuracy is improved. Through the combination of pressure real-time adjustment and emergency response, it is ensured that when the pressure exceeds a safety range, pressure adjustment is conducted rapidly, warning is given out through an alarm, secondary injury caused by improper pressure is avoided, the use safety and response speed of the tourniquet are improved, tissue injury of a patient can be more accurately prevented, and the patient can be more accurately protected. And the real-time effectiveness and safety in the emergency treatment process are ensured.

The utility model relates to a self-adaptive pressure tourniquet which comprises a fixing band body, the unfolding face of the fixing band body is in a sector shape with the upper portion wide and the lower portion narrow, rope drawing grooves are formed in the upper end and the lower end of the fixing band body along the edges, corresponding drawing ropes are arranged in the rope drawing grooves, and the other ends of the drawing ropes are movably connected with contraction blocks. The upper end of the side, attached to the skin, of the fixing band body is fixedly connected with a first air bag, the lower end of the side, attached to the skin, of the fixing band body is fixedly connected with a second air bag, and the fan-shaped tourniquet with the wide upper portion and the narrow lower portion can better adapt to differences of limb shapes and sizes of different patients; according to the tourniquet, the fixing band body is arranged, the attaching degree of the fixing band body and the limb is further adjusted through the drawing rope, the tourniquet can be tightly attached to the limb parts with different thicknesses, the multiple air bags can distribute pressure more evenly, and the risk of tissue ischemia and even necrosis caused by uneven pressure is reduced.

The invention relates to the technical field of hemostasis, and discloses a hemostasis device which comprises a tourniquet, a device bin is installed on the tourniquet, a winding shaft is installed in the device bin, two elastic belts are installed on the winding shaft, the ends of the two elastic belts are fixedly connected with the inner walls of the two ends of the tourniquet respectively, and a guide cylinder is fixedly installed on the winding shaft. According to the hemostasis device, the mechanical timing device is used for driving the rotating cylinder to wind the elastic rope, the first magnetic ring is attracted by the magnetic force of the second magnetic ring to drive one end of the elastic rope to move upwards in the rotary knob, and when the rotating shaft and the rotating cylinder are not reset completely, the elastic rope is pulled, so that the elastic rope is wound, and the hemostasis effect is achieved. When the elastic rope is stretched to a certain degree, the pulling force borne by the first magnetic ring is larger than the magnetic attraction force exerted on the first magnetic ring by the second magnetic ring, the first magnetic ring is downwards aligned with the magnetic shaft, the magnetic shaft retracts into the rotary knob, the rotary knob moves upwards to reset, the elastic belt is not rolled any more, and the relaxation time of the tourniquet is effectively adjusted according to the limb bleeding degree of a patient.

An adaptable partial circumferential tourniquet is disclosed that allows for broad application to hemorrhage sites on a human patient. The tourniquet includes a baseplate having an adaptable size with a pair of depending arms that extend lateral from each side of the baseplate. A cable and ratchet arrangement allow for the extension of the depending arms to form a semi-circumferential enclosure around a tourniquet site with the ability to cinch or constrict around the tourniquet site. A V-shaped bladder with integrated side portions expands once the tourniquet is arranged on a patient to apply pressure to tissue resulting in vasculature occlusion. Due to the unfolding segmented nature of the depending arms, the tourniquet has broad application to different body tissue sites. The based plate also includes ports, slots, and openings to allow for other medical procedures to proceed even after tightened positioning and inflation of the tourniquet.

The invention relates to the technical field of compression hemostasis in interventional operations, and particularly discloses an adjustable compression hemostasis fixing band for interventional operations, which comprises a compression hemostasis component and a fixing component, the compression hemostasis component comprises a mounting bag and a sandbag, an interlayer bag is arranged in the mounting bag, and first magic tapes are arranged on the upper and lower inner walls of openings at two ends of the mounting bag; the fixing assembly comprises a first elastic compression tourniquet, a second elastic compression tourniquet and elastic viscous fixing bands, the mounting bag is fixedly connected to the first elastic compression tourniquet, and the elastic viscous fixing bands are connected to openings in the two ends of the mounting bag; the first elastic compression tourniquet, the second elastic compression tourniquet and the elastic viscous fixing band are fixed to the thigh of the affected side of a patient and the paracentesis incision in a reinforced mode, and through stable fixation at multiple positions, the device is not prone to sliding and has no harm to the skin, and the comfort level of the patient is improved.

The utility model provides an electric pneumatic hemostatic device, including an electric pneumatic hemostatic instrument body, an air circuit connection hose and a tourniquet. The electric pneumatic hemostatic instrument body is provided with a display, a controller, an air pump assembly, a photoelectric blood oxygen saturation probe, an air circuit connection interface and a probe connection interface. The display and the air pump assembly are respectively electrically connected to the controller. The photoelectric blood oxygen saturation probe is used to obtain the blood oxygen pulse signal of the distal end of the patient's limb. A pressure sensor is provided in the tourniquet. The pressure sensor is used to obtain the limb pulse signal of the patient wearing the tourniquet. The number of tourniquets is at least two, and each tourniquet is connected to an air pump assembly through an air circuit connection hose and an air circuit connection interface in turn. The utility model is convenient for reminding the operator to adjust the tourniquet pressure setting in time to reduce safety risks; ensure that the limb of the patient wearing the tourniquet has a trace amount of bleeding, and avoid the risk of limb ischemic necrosis.

A stretcher including a flexible base panel sized to support a person lying thereon during a rescue or extrication operation. The base panel includes a header end and an opposite footer end, and further includes a plurality of securement straps, a shoulder harness, and a leg harness coupled to the base panel to help restrain the injured person and prevent further injury that may be caused such as by having the person roll off the sides of the stretcher. The leg harness may be configured to function as a junctional tourniquet to minimize blood loss at the pelvic region in the case of severe injury to the person.

The invention relates to the technical field of clinical medical treatment, in particular to an intelligent hemostasis system and method. Blood pressure, heart rate, hemostasis pressure, patient body data and patient wound data are collected through the hemostasis device, a hemostasis time-pressure prediction model is constructed through a differential evolution algorithm and a WaveNet model, prediction of a relation curve of the hemostasis pressure and the hemostasis time is achieved, and the hemostasis pressure and the hemostasis time are predicted through the relation curve. The hemostasis device can adjust the pressure applied by the hemostasis device according to needs, and the problems that in the war wound treatment process, the hemostasis pressure of a tourniquet is too large, the hemostasis time is too long, consequently, limbs or pressed local parts are necrotic, and the hemostasis effect is poor due to the too small pressure are solved.

A styptic harness tourniquet used by hands for providing a first aid to stop external arterial bleeding from injured limbs. The harness consists of a casing with Velcro fastener, a sling, a buckle at one end of the casing and a base with fixator with strap, windlass rod attached to the sling. The casing has at least two layers, the buckle contains at least one hole, the base contains at least six holes, and the strap of the fixator contains at least one hole. The holes in the buckle and base have teeth on one side. The windlass rod contains at least 1 cm of a smooth surface and at least 1.5 cm of a ribbed surface at the edges. The harness increases the reliability of the structure and the efficiency of its operation.

The utility model relates to the technical field of medical care, in particular to a tourniquet winding device which comprises an unwinding box, an unwinding mechanism, a tourniquet outlet pipe, a guide column, a tourniquet fixing mechanism, a cutting mechanism, a pipe cover and a box cover, a center column is arranged in the center of the interior of the unwinding box, and the unwinding mechanism is movably connected into the center column; when the tourniquet unwinding device is used, a tourniquet roll can be placed through the unwinding mechanism arranged in the unwinding box, the positive and negative tooth lead screw is driven to rotate through the rotating rod, the sliding blocks in threaded connection with the positive and negative teeth of the positive and negative tooth lead screw move oppositely, the supporting plate is supported outwards under the action of the connecting rod through the opposite movement of the two sliding blocks, and the tourniquet is wound on the tourniquet roll. Under the supporting effect of the two supporting plates, the tourniquet winding drum is internally supported and fixed, the tourniquet winding drum fixing device can be suitable for fixing the tourniquet winding drums of multiple specifications, medical staff do not need to hold the tourniquet winding drum to wind the tourniquet winding drum, and the tourniquet winding drum fixing device has good safety.

The invention relates to a hemostasis method scheduling and priority ranking method in war wound first aid. The method comprises the following steps: acquiring key parameters of a wounded person based on multi-source data including visual images, wearable physiological monitoring and voice input, wherein the key parameters include the bleeding amount, the wound part, the bleeding speed and vital signs; constructing a hemostasis urgency degree evaluation model, and mapping each wounded person into a hemostasis urgency degree index BUI; each BUI index is used as one of input parameters for subsequent scheduling and sorting, so that the system is driven to start by injury conditions, and a basic priority sequence is established; the method comprises the following steps: carrying out classification modeling on common hemostasis methods including tourniquets, hemostatic gauze, injection type hemostatic agents and air pressure hemostasis equipment, and establishing an applicable condition matrix; constructing a scheduling rule engine, and dynamically recommending a matched hemostasis method set in combination with the BUI index of the wounded, the wound part, the means adaptability and the risk factor; and a scheduling algorithm is utilized to distribute hemostasis means combination and sequence for each wounded.

The utility model provides an abdominal pressure tourniquet, including an abdominal belt, on which a tightening device is provided, the tightening device adopts a tightening belt, and the tightening belt is provided with Velcro; a pressurizing device is provided on the inner wall of the abdominal belt, and the pressurizing device includes a plurality of air bags arranged at intervals, and a gas diversion structure is provided on the outer surface of the abdominal belt, and all the air bags are connected to the inflation device through the gas diversion structure, and the gas diversion structure can connect all the air bags, or connect one air bag alone. The utility model adopts Velcro provided on the tightening belt, which can quickly fix the abdominal belt on the patient's abdomen; when the inflation device is used to connect one air bag alone through the gas diversion structure, one air bag is inflated alone to locally pressurize the wound, and the pressurized air bag area can be selected according to the wound location; when the amount of abdominal bleeding is large, the inflation device is used to connect all the air bags through the gas diversion structure, and all the air bags can be inflated at the same time to achieve the effect of pressurizing the abdomen as a whole.

A multifunctional cable tie and an apparatus provided with same. The multifunctional cable tie comprises a strap body (1) and a buckle body (2), at least one side surface of the strap body (1) is provided with a plurality of first teeth (3), the buckle body (2) is provided with a rectangular strap channel (4), one side of the strap channel (4) is provided with second teeth (5), and a shape memory component (6) is provided opposite to the second teeth (5); when the strap body (1) passes through the strap channel (4), the shape memory component (6) is deformed, and the strap body (1) is pushed to move in a direction perpendicular to the strap body (1), so that the first teeth (3) and the second teeth (5) are connected and kept in a connected state. The apparatus provided with the cable tie may be a wearable device, an electric appliance, a box, a bag, a medical cable tie or a tourniquet. Different arrangements of the strap body (1), the buckle body (2) and the shape memory component (6) may achieve multiple functions of cable ties.

A tourniquet includes a strap formed of a flexible material and shaped as a long, thin and generally flat body having a first surface and an opposed second surface, and an array of ridges extending transversely, substantially along most of the first surface. The tourniquet head includes an insertion mouth and within the mouth a flexible support and a plurality of teeth formed on the flexible support. The flexible support and the plurality of teeth providing an insertion channel in the tourniquet head for tightly receiving a free insertion end of the strap in a manner that enables the strap to be threaded through the insertion mouth with the plurality of teeth in the head being lockable on the ridges on the strap in a manner that enables a leading end of said strap to be ratcheted through the mouth in a locking direction only. A release lever enables the flexible support in the mouth to be pulled away from the ridges on the strap to allow for temporary disengaging of the teeth in the head from the ridges on the strap, to enable gradual and controlled releasing of tourniquet tension being applied on a body part to which the tourniquet has been mounted.

The invention discloses a blood collection auxiliary device, and relates to the technical field of medical instruments, the blood collection auxiliary device comprises a tourniquet arm support assembly, the tourniquet arm support assembly comprises a foundation plate and an annular air bag, the foundation plate is provided with a through hole, the annular air bag is fixedly connected in the through hole of the foundation plate, and two first telescopic pipes are symmetrically and fixedly connected to the two sides of the bottom of the foundation plate; the telescopic ends of the two first telescopic pipes are each fixedly connected with a bottom support, the top ends of the two bottom supports are each fixedly communicated with a semi-ring air bag, and a micro air pump is installed on the top face of the foundation plate. The arm of a patient is fixed by the annular air bag and the two semi-ring air bags in a three-point mode, the forearm and the big arm of the patient are wrapped and limited, abut against the semi-ring air bags and are in a bottom supporting state, then the patient cannot freely move the arm, it can be ensured that the problem that in the blood sampling process, a blood sampling needle moves due to movement of the arm of the patient is solved, and the blood sampling efficiency is improved. The comfort of the patient in the blood sampling process and the smoothness of the blood sampling work are ensured.

The utility model belongs to the technical field of tourniquets, and particularly relates to a spinning tourniquet which comprises a self-adhesive tape, a buckle shaped like a Chinese character'ri 'is fixedly connected to one end of the self-adhesive tape, a screwing mechanism is arranged on the self-adhesive tape, and the screwing mechanism is close to the buckle shaped like the Chinese character'ri'. The screwing mechanism comprises a pressurizing assembly arranged on the self-adhesive tape, the pressurizing assembly is in transmission connection with a screwing assembly, a self-locking structure is arranged in the screwing assembly, a timer is arranged on the screwing assembly, and a marking pen is detachably connected to the screwing assembly. The spinning tourniquet is provided with the timer and the marking pen, a user can conveniently record the hemostasis time, and the situation that the hemostasis effect is poor due to the short hemostasis time or the limbs are damaged or necrotic due to the long hemostasis time is avoided.

A tourniquet tightening modulation method based on blood pressure measurement and vibration point sensing and a tourniquet tightening modulation device based on blood pressure measurement and vibration point sensing are provided. The method includes: wearing a tourniquet at a limb base through a loop, performing a first tightening of the tourniquet according to a first predetermined pressure; when a propagation direction of a vibration wave detected is a predetermined direction and a blood pressure of the limb is below a predetermined threshold, performing a second tightening of the tourniquet according to a second predetermined pressure; recording a tightening moment of the second tightening, and, when a difference between a current moment and the tightening moment exceeds a first predetermined duration, loosening the tourniquet to a predetermined subsequent moment according to a third predetermined pressure, and then performing a third tightening of the tourniquet according to the second predetermined pressure.

The invention discloses a multi-section venipuncture tourniquet device, and relates to the technical field of medical instruments. Comprising two telescopic frames which are symmetrically arranged, a holding rod, a first supporting plate and a second supporting plate are sequentially and fixedly installed between the two telescopic frames, a tourniquet is arranged above the holding rod, a plurality of automatic telescopic rods are installed at the bottom of the tourniquet in a dense array mode, tourniquet balls are arranged at the bottoms of the automatic telescopic rods, and pressure sensors, temperature sensors and heating wires are arranged in the tourniquet balls; a camera is arranged at the bottom of the tourniquet, a touch screen is arranged at the top of the tourniquet, and a controller is arranged in the tourniquet and electrically connected with the touch screen and the automatic telescopic rod. The touch screen presents the distribution condition of veins on the back of the hand of a patient, a finger selects one vein on the touch screen and draws a corresponding track, the tourniquet stretches out the automatic telescopic rod according to the track, the tourniquet ball is pressed on the corresponding vein, rolling pressing is conducted on the vein in a targeted mode, meanwhile, the hot compress function is matched, blood vessel dilatation is effectively promoted, and the blood vessel dilatation rate is increased. And the veins are fully filled and exposed.

The invention relates to the technical field of nursing devices, in particular to a surgical nursing tourniquet winding device and a method thereof.The surgical nursing tourniquet winding device comprises an outer sleeve device, a driving device arranged on the outer side of the outer sleeve device and a placing device moving along with movement of the driving device; the outer sleeve device comprises a fixing part, rotating ring bodies arranged at the left end and the right end of the fixing part, a plurality of sets of clamping parts changing the positions of the clamping parts along with rotation of the rotating ring bodies, limiting protruding blocks arranged on the inner sides of the rotating ring bodies and second pressure springs pushing the limiting protruding blocks to move outwards through elastic force of the second pressure springs. According to the surgical nursing tourniquet winding device and the surgical nursing tourniquet winding method, a driving motor is started to drive a moving table and a placing device to move on the outer side of a fixed ring body, and a rod end pulley moves in a cam groove, so that after a tourniquet in a placing ring is pulled out, the tourniquet is wound; the tourniquet is continuously wound on the outer side of the arm of the patient by simulating manual work and adopting a cross overlock method, so that the occupation of human resources is reduced, and the tourniquet winding consistency is improved.

A styptic harness tourniquet includes a casing with Velcro fastener. The casing contains a sling with windlass rod, and a buckle and a base on which a fixator and a strap are located. The buckle contains at least two holes, and the base contains at least six holes. The strap contains at least one hole. At least one hole of the buckle and at least two holes of the base contain teeth. At least one fixator of the buckle is located on the casing. At least two limiters are located on the fixator of the windlass rod. The holes in the buckle are arranged in at least two rows. At least one strengthening element is connected to the sling for at least one sixth of its length, and at least two protectors are located in the casing on both sides of the base.

The utility model discloses an inflatable splint for fixing a broken limb, which comprises a splint outer layer, a magic tape, a splint inner layer and an inflatable hole, a gap is reserved between the splint outer layer and the splint inner layer, and a fixing structure is arranged on the splint outer layer and the splint inner layer. The fixing structure comprises a left fixing plate, a left rotating block, a vertical rod, a connecting block, a right rotating block and a right fixing plate, the left fixing plate is fixed on the outer layer of the clamping plate, and the right fixing plate is fixed on the inner layer of the clamping plate. According to the inflatable splint for fixing the fractured limb, the gap is formed between the inner layer and the outer layer and used for containing an ice bag, when the limb of a wounded person is not completely fractured, low-temperature treatment can be conducted on the wound, hemostasis is conducted on the wounded part in cooperation with a spinning tourniquet arranged at the end opening of the outer layer, and the fixing structure is arranged to fix the inner splint and the outer splint; and the ice bag can be separated from the inner interlayer and the outer interlayer by lifting the vertical rod, so that the ice bag can be comprehensively and uniformly placed or taken out between the inner interlayer and the outer interlayer.

The invention relates to the technical field of binding detection equipment, and discloses an intelligent binding pressurization pressure measuring device, which comprises a pressurization bandage, a flexible base layer card, a sensor array, a wireless transmission module and an alarm terminal, and is characterized in that the flexible base layer card comprises a flexible card strip and a plurality of flexible cards, and the sensor array comprises a plurality of temperature sensors and a plurality of pressure sensors; the pressurizing bandage can surround the body of a patient together with the flexible clamping strip for binding, and the multiple temperature sensors and the multiple flexible clamping sheets are distributed in a staggered mode in the length direction of the flexible clamping strip. Through the dynamic fitting design of the flexible clamping strip and the pressurizing bandage, self-adaptive binding of the curved surface of the binding part of the human body is achieved, a traditional tourniquet can be replaced in the surgical operation, the temperature sensors are embedded into the flexible clamping strip at equal intervals in the length direction of the pressurizing bandage, and the pressure sensors are integrated on the detachable flexible clamping strip; and the plurality of pressure sensors and the plurality of temperature sensor arrays form a distributed monitoring network covering key parts.

A junctional tourniquet apparatus and related methods of use. An exemplary tourniquet has an inverted cone shape, wherein a narrower end has a mushroom shaped base that is pressed against a compression target and a broader end has a plurality of pass-through slots for straps. Another exemplary tourniquet has a broad plate component and a handle component. The handle component has a mushroom shaped base on a first end and a handle on a second end. The handle component passes through the center of the plate component with threads that allow the handle component to compress a target by twisting the handle.

The utility model discloses a vein hemostat. The vein hemostat comprises a main body and an air bag, the main body is annular, and an accommodating space for allowing the arm of a person needing hemostasis to penetrate through is formed in the inner side; the air bag is arranged on the inner side of the body and used for being connected with the inflation device, the air bag is inflated through the inflation device to press the arm to block vein blood flow, and a tourniquet clamping groove is formed in the inner side of the air bag and used for allowing a disposable tourniquet to be inserted in so that the disposable tourniquet can be attached to the skin surface of the arm. According to the vein hemostat, the body and the air bag are arranged, the air bag is inflated to press the arm to block vein blood flow, the tourniquet clamping groove is formed in the inner side of the air bag and used for allowing the disposable tourniquet to be inserted, the disposable tourniquet is made to be attached to the skin surface of the arm, and therefore the discomfort brought to the arm of a person needing hemostasis due to the strength factor of a nurse can be reduced; and a disposable tourniquet can be used, so that one person can use the tourniquet, and the safety requirement of medical supplies is met.

The invention relates to an overturning and pressing type hemostasis device which comprises a tourniquet body, a tensioning belt and an overturning and pressing type multi-stage locking structure, one end of the tensioning belt is connected with one end of the tourniquet body, and the overturning and pressing type multi-stage locking structure is installed on the outer side of the other end of the tourniquet body. One end of the tourniquet main body is provided with a tightening belt, the other end of the tourniquet main body is provided with a belt body anti-pinch traction structure, the other end of the tightening belt penetrates through the belt body anti-pinch traction structure and is connected with the overturning pressing type multi-stage locking structure, and the overturning pressing type multi-stage locking structure is used for adjusting the tensioning speed of the tightening belt and locking the tightening belt after adjustment. And the host is arranged on the turnover pressing type multi-stage locking structure and is provided with a timing module and an alarm module. The tourniquet has the advantages that the tensioning belt is tensioned through the operation of overturning and pressing, so that the hemostasis pressure of the tourniquet body is adjusted, and compared with an existing spinning type hemostasis mode, the operation process is simplified.

The invention relates to the technical field of medical nursing materials, in particular to a cesarean postoperative hemostasis bellyband which comprises a main bellyband body used for being fixed to the abdomen of a puerpera in a sleeving mode, an auxiliary adjusting band used for adjusting the tightening tension of the main bellyband body and a tourniquet used for conducting pressing hemostasis on the position of a cesarean operation incision. The two sides of the tourniquet are detachably connected with the main bellyband body through zippers, the tourniquet comprises a fabric layer, a filling layer, a heating layer and a hemostasis layer which are sequentially arranged from outside to inside, a gap is formed between the fabric layer and the filling layer, and medical cotton cloth is arranged in the gap; the filling layer acts on an operative incision through inflation expansion, and a heat insulation sheet is arranged between the filling layer and the heating layer and sewn to the heating layer. The outer side of the hemostasis layer adheres to the heating layer, and the inner side of the hemostasis layer makes contact with a surgical incision. The invention aims to solve the defects of the existing bellyband in the aspects of hemostasis and adaptive adjustment after cesarean section.

The utility model provides a bandage tourniquet, and relates to the technical field of bandage tourniquets, the bandage tourniquet comprises a tourniquet body, an adjusting structure is arranged on the tourniquet body, the adjusting structure is mainly composed of a connecting groove, the connecting groove is arranged at one end of the tourniquet body, a rotating column is rotatably connected in the connecting groove, and the rotating column is provided with a rotating hole. An extension belt is fixedly connected to the rotating column, limiting columns are slidably inserted into the two sides of the connecting groove respectively, connecting rods are fixedly connected to one ends of the limiting columns, clamping blocks are fixedly connected to the connecting rods, clamping grooves are formed in the two ends of the rotating column respectively, and the clamping blocks are matched with the clamping grooves in size; according to the adjustable bandage tourniquet, the problem that inconvenience is brought to a patient due to the fact that the length of an existing bandage tourniquet is uniform and cannot be adjusted is solved.

The invention discloses a rapid hemostasis auxiliary device for nursing in the emergency department, and relates to the technical field of nursing appliances in the emergency department. The two sides of the base frame are each provided with an adjusting assembly used for stopping bleeding of an affected part and a bleeding stopping assembly, each adjusting assembly comprises a motor fixed to the center of the top of the base frame, and a bleeding stopping pad used for absorbing and stopping bleeding is arranged on the inner side of each bleeding stopping assembly; a contraction assembly is arranged on the side cylinder and used for contracting the tourniquet bound to the affected limb so as to cut off blood supply. By adopting an elastic pressing mode, effective and rapid hemostasis nursing is carried out on an affected limb, the bleeding phenomenon caused by improper hemostasis action is avoided, meanwhile, the vein of the affected limb is bound and separated for blood supply, and rapid hemostasis nursing of the affected limb is facilitated. And cold compress hemostasis nursing is performed in combination with the cold compress assembly.

A tourniquet includes: a strap; a housing containing a winding mechanism, a first end of the strap being attached to a spool shaft of the winding mechanism; a buckle assembly attached to the housing; a buckle tongue attached to a second end of the strap for releasably coupling the strap to the buckle assembly; a first portion of the winding mechanism configured to reduce a length of the strap extending outside of the housing; and an instruction portion that is configured to emit one of audible and visual instructions to a user. The emitting of a particular one of the instructions results from a user step being performed with the tourniquet, the rotating handle is initially decoupled from the first portion of the winding mechanism, and rotation of the rotating handle causes the rotating handle to become mechanically coupled to the spool shaft.

The invention relates to the technical field of medical simulation training equipment, in particular to an arm puncture simulation training device and a simulation system thereof, comprising an arm model main body and a control box base arranged at the end of the arm model main body; the puncture training assembly is arranged on the arm model main body and comprises a hand back clamping groove formed in the hand back of the arm model main body, a hand back module piece arranged in the hand back clamping groove, an ejection piece arranged in the hand back clamping groove and a storage piece arranged in the control box base; the rectangular plate is arranged in the control box base, long objects such as tourniquets and the like can be clamped and stored in the rectangular plate, so that the long objects cannot be intertwined and interfered with one another, medical students can clearly take needed objects, the first connecting rod and the second connecting rod drive the expansion plate to be unfolded in the control box base, and the expansion plate is convenient to use. Storage of necessary small articles such as cotton swabs by the control box base is improved, and the situation that the necessary articles of the arm model main body are stored in a mess is improved.