36results about How to "Reduce oppression" patented technology

The present application provides a kind of arterial compression hemostat, including shell, shell is provided with multiple groups rotatable winding frame, winding frame is provided with fixed band, the end of multiple groups fixed band is connected by buckle, rotatable drive cylinder is arranged in shell, drive cylinder end is provided with adjusting wheel, the end of drive cylinder is provided with compression pad, drive cylinder is provided with the same group number of drive unit as fixed band, each group drive unit is connected with one group fixed band, to convert the rotation of drive cylinder into the rotation of drive winding frame, and remove the drive of winding frame when fixed band is tensioned.The hemostat can be used to tighten multiple groups of fixed band in different ranges to perform arterial compression hemostasis, making it convenient for patients of different sizes to use and move, and the group of fixed band can be controlled to tighten without further tightening the fixed band that has been tightened during the movement process, effectively solving the many inconveniences of existing hemostatic devices when in use.

This invention relates to the field of medical device technology, specifically to a fixation brace for postoperative repair of lateral collateral ligament injury of the ankle joint. It includes a bionic support shell conforming to the dorsum of the foot, ankle, and heel. The bionic support shell comprises a dorsum segment, an ankle segment, and a heel segment conforming to the dorsum of the foot, ankle, and heel. The bionic support shell is equipped with a multi-dimensional fit and fixation mechanism and an adaptive rehabilitation adjustment mechanism. The multi-dimensional fit and fixation mechanism is electrically connected to a control module, which is also electrically connected to the adaptive rehabilitation adjustment mechanism. The multi-dimensional fit and fixation mechanism includes an arch support component, a circumferential tightening component, and a heel limiting component. The control module is used to adjust the fixation force of the multi-dimensional fit and fixation mechanism, simultaneously and in conjunction with adjusting the range of motion limits of the adaptive rehabilitation adjustment mechanism. This invention achieves precise multi-point fit and fixation of the ankle joint, with precisely adjustable fixation force.

The utility model relates to a frame assembly and engineering machinery, the frame assembly comprises a frame main body and a track frame, the frame main body comprises a bottom plate and side plates connected to two opposite sides of the bottom plate, the bottom plate and the two side plates jointly enclose a containing cavity, each side plate comprises a main wall part and an inward contraction part, and the main wall part is connected with the inward contraction part in the width direction of the frame assembly. The distance between the two inward-retracting parts is smaller than that between the two main wall parts, and the main wall parts are provided with through holes communicating with the containing cavity. The frame body further comprises a supporting piece located in the containing cavity and connected to the side plates, and the supporting piece is used for suspending an engine. The number of the crawler frames is two, the two crawler frames are connected to the inner containing parts one by one, in the height direction of the frame assembly, the main wall part at least partially shields the crawler frames, and the frame assembly can be provided with a wide crawler under the condition that the transverse occupied space of the loading machine is not increased, so that the compactness and miniaturization of the loading machine are improved.

The invention relates to the technical field of medical supplies, and discloses a multifunctional neonatal noninvasive respirator head cap which comprises a head cover, a multi-specification adaptive interface module, a self-adaptive noise reduction assembly, a constant-temperature adjusting system and a safety locking adjusting mechanism, the head cover is integrally formed by medical elastic breathable fabric, and a fixing ring of an annular structure is fixedly installed on the outer side of the head cover; the fixing ring is used for achieving rapid disassembly, assembly and positioning of the interface module, the self-adaptive noise reduction assemblies are symmetrically arranged on the two sides of the head cover, and the constant-temperature adjusting system is embedded in the head cover and flexibly attached to the head skin of the newborn. Through the rotary clamping structure of the fixing ring, the rotating ring, the limiting piece and the connecting block and the modular design of the multi-specification pipeline connectors, rapid adaptation and disassembly and assembly of different brands of breathing machine pipelines are achieved, the whole set of head cap does not need to be replaced for newborns, and the purchase and inventory cost of hospitals is greatly reduced. Meanwhile, the operation process of medical staff is simplified, and the treatment preparation efficiency is improved.

The utility model relates to the technical field of acupuncture and moxibustion, and discloses a multifunctional acupuncture and moxibustion chair which comprises a base and further comprises a plurality of lockable universal wheels fixedly connected to the bottom of the base. And the connecting frame is fixedly connected to the upper surface of the base. According to the medical nursing bed, the inclination angles of the backrest and the thigh supporting extension plate can be effectively adjusted through the arranged adjusting assembly, medical staff can conveniently take and use treatment tools through the arranged sterile storage assembly, a patient can conveniently call the medical staff through the arranged elbow support auxiliary assembly, and the medical staff can conveniently take and take the treatment tools through the elbow support auxiliary assembly. Meanwhile, a patient can conveniently place a mobile phone, compression on the neck of the patient is reduced, the comfort level of the patient in the treatment process is improved, the seat can be effectively heated through the arranged heating assembly, and therefore the comfort level of the patient in the treatment process can be further improved; and the versatility and the practicability of the whole device are effectively improved.

The utility model discloses a multifunctional post-breast-operation elastic bandage which comprises a base body part and a bandage body part. A cup through hole is formed in the center of the cup part in a penetrating manner, and the peripheral side of the cup part is connected with the base body part through a bidirectional zipper; the strap parts are made of elastic materials, the width of the strap parts is smaller than that of the cup parts, the strap parts are connected to the two sides of the base body part through fixed ends, and the movable ends of the strap parts are detachably connected together; the number of the inflatable air bags is two, the inflatable air bags are annular, a hole in the middle of the annular shape is matched with the position and the size of the cup through hole, the outer size of the annular shape is matched with the size of the cup part, and the inflatable air bags are fixed on the inner side of the cup part through hook-and-loop fasteners. The position of the nipple is reserved, the phenomenon of nipple necrosis caused by blood supply disorder due to the fact that the bandage compresses the nipple areola can be avoided, the inflatable air bag is designed to pressurize the breast portion in a targeted mode, the compression hemostasis effect or the effusion discharge promoting effect is improved, and rapid postoperative rehabilitation is promoted.

This utility model discloses a lower leg prosthesis taking frame, including a taking cylinder body, a lower conical cylinder mounted at the bottom end of the taking cylinder body, a fixing ring mounted at the top end of the taking cylinder body, and a protective padding layer mounted inside the taking cylinder body; the taking cylinder body includes taking cylinder a and taking cylinder b arranged opposite to each other, and the protective padding layer includes a leg guard plate a mounted on the inner wall of taking cylinder a and a leg guard plate b mounted on the inner wall of taking cylinder b; the outer walls of both leg guard plates a and b are equipped with adaptation mechanisms, and the inner walls of both leg guard plates a and b are equipped with sponge padding layers; the lower end of the inside of taking cylinder a and taking cylinder b is equipped with a bearing cylinder, and the top end of the lower conical cylinder is equipped with a connecting cylinder, with the bearing cylinder inserted into the connecting cylinder; the design of this lower leg prosthesis taking frame better adapts to the structure of the human leg, which is wider at the top and narrower at the bottom, providing a more realistic fixation and support effect for the patient, reducing pressure on the patient's leg, and enhancing the use effect of the patient during prosthesis taking.

The utility model relates to the technical field of digestive system department instruments, and particularly discloses an ascites drainage pipeline fixator which comprises a first positioning seat, a clamping plate is arranged on one side of the first positioning seat, and the clamping plate is connected with the first positioning seat through a spring piece. The second positioning seat is hinged to one side of the first positioning seat, the side, away from the hinged position of the first positioning seat, of the second positioning seat is rotationally connected with a positioning plate, and the positioning plate is connected with the first positioning seat through a fixing piece; the pipeline groove is formed between the first positioning seat and the second positioning seat; in the ascites drainage process, accumulated pipelines can be fixed and guided, winding, pressing, excessive bending and the like are reduced, ascites are drained into the drainage bag through the pipelines to be collected, and when the ascites are large in accumulated liquid amount, thick or not prone to flowing out naturally, the ascites can be sucked out through connection of the negative pressure suction pipe and the connecting pipe. Negative pressure is generated in a corresponding drainage bag connected with the drainage bag connector, the amount of effusion in the abdominal cavity can be rapidly reduced, and abdominal distension and discomfort of a patient are relieved.

The present application relates to the technical field of medical auxiliary apparatus, in particular to a kind of endoscopic thyroid surgery auxiliary support device, including fixed base, fixed base is equipped with support arm, support arm is equipped with support head, support arm is equipped with fixed component, adjusting assembly and monitoring component, fixed component is installed at the end of support arm away from fixed base, support arm is hollow structure, adjusting assembly is installed in support arm, monitoring component is used to real-time acquisition support head deviation data, fixed component locking torque data and the fit pressure data of support head and operation area, monitoring component is electrically connected with control module, control module is used to control the adjusting action of adjusting assembly and the locking / unlocking state of fixed component according to the data of real-time acquisition of monitoring component.The present application is used to assist fixed operation instrument in endoscopic thyroid surgery process.

The utility model discloses a kind of adhesive tapes of fixed internal fistula needle, including adhesive layer, still including partition layer, metal strip, outer protective layer;The adhesive layer, partition layer, metal strip, outer protective layer are sequentially bonded and connected from bottom to top;Two metal strips are set, two metal strips are collinear, and the distance between two metal strips, i.e. the length K of pipe wrapping area satisfies: πD / 2 The utility model can raise pipe by two metal strips, and the pipe can be accurately raised by the standard of pinching to skin below, so that the pipe is flush with internal fistula needle needle head, and the depth, direction of internal fistula needle is controlled.

The utility model relates to the field of medical instruments, in particular to a disposable crissum postoperative nursing pad. The utility model provides a disposable crissum postoperative nursing pad which can inject water to perform hot compress or cold compress on a patient when the disposable crissum postoperative nursing pad is pasted for use, relieve inflammation, swelling and pain, reduce bleeding, improve use comfort and promote wound healing. A disposable crissum postoperative nursing pad comprises a breathable pad, a first sticking sheet and the like, and the upper side of the rear portion of the breathable pad is connected with the first sticking sheet. Cold water or hot water is poured into the water injection pipe and then enters the water bag for water injection, then the anti-overflow screw cover is rotated to be movably installed for sealing, then the device is pasted on trousers for use, hot compress or cold compress is carried out through hot water or cold water, and therefore when the device is pasted for use, water injection can be carried out on a patient for hot compress or cold compress. Inflammation, swelling and pain are relieved, bleeding is reduced, the use comfort is improved, and wound healing is promoted.

The utility model discloses an adjustable waistline, include: waistline body, buffer mechanism, the outer wall of buffer mechanism and the outer wall fixed connection of waistline body, adjusting mechanism, the outer wall of adjusting mechanism and the outer wall fixed connection of waistline body, elastic rope, the outer wall of elastic rope and the inner wall fixed connection of waistline body, just the elastic rope is along the linear array of the outer wall of waistline body, the adjusting mechanism includes adjusting ring, the outer wall fixed connection of adjusting ring has the hook face layer, the inner wall fixed connection of waistline body has the fixed ring, the outer wall fixed connection of fixed ring has the hair face layer, the utility model relates to the ergonomics technical field, and the present application is through setting adjusting mechanism, utilizes the hook face layer on adjusting ring and sticks to the hair face layer, makes the hook face layer on the barb hooks on the hair face layer, can with adjusting ring lock on fixed ring, and the present application reaches the purpose of adjustable waistline.

This invention discloses a tearable catheter sheath with hemostatic function, relating to the field of medical device technology, which solves the problem of inconvenience for financial personnel in binding vouchers. It includes: a sheath assembly comprising two symmetrical tearable tube seats, with a tearable sheath tube commonly disposed on the inner edge surface of the bottom openings of the two tearable tube seats; tear lines are provided on the tearable sheath tube along the symmetrical axis of the two tearable tube seats to ensure that the tearable sheath tube can be torn simultaneously when the two tearable tube seats are torn outwards; and a limiting component disposed between the tearable tube seats and the tearable sheath tube; the limiting component includes a limiting ring disposed on the outer edge surface of the tearable sheath tube, which ensures that the opening position of the tearable sheath tube when peeled is above the puncture incision, preventing the tearable sheath tube from pulling the puncture incision to the sides and causing incision expansion when it is peeled off and withdrawn from the blood vessel.

The utility model relates to the technical field of orthopedic tools, and discloses a posture correcting belt which comprises a waist belt and shoulder belts, the two shoulder belts are arranged in a bilateral symmetry mode and are arranged on the back of a human body in a crossed mode, the front ends of the shoulder belts are connected with the waist belt through the chest of the human body and at a first connecting point X at the junction of the anterior saw muscle of the human body and the pectoralis major muscle of the human body, and the back ends of the shoulder belts are connected with the waist belt. The rear ends of the shoulder straps pass through the shoulders of the human body and obliquely pass through a second connecting point Z at the position of latissimus dorsi of the back of the human body to be adjustably connected with the waistband. According to the posture correcting belt, by optimizing the connecting point positions and mechanical distribution of the shoulder belts and the waist belt, the comfort degree and the correcting effect of the posture correcting belt are remarkably improved, the posture correcting belt can provide stable supporting and correcting force while dispersing pressure and optimizing stress distribution through the design of the crossed shoulder belts and reasonable mechanical fulcrum distribution, and therefore the poor posture is effectively improved, and the posture correcting effect is improved. And the discomfort of the body is reduced.

The present invention relates to a medical emergency kit designed for efficient and safe treatment of wounds, particularly for high-risk situations such as bleeding and pneumothorax. The kit comprises a compression bandage which is improved by pressure applying means attached to its outer surface, making the application of controlled compression easier. Furthermore, the kit contains an auxiliary dressing such as a sterile pad attached to the bandage, and a pocket for storing additional first aid devices such as sterile gauze and a plastic closure sheet, which facilitates the protection and treatment of the wound in a practical and efficient manner. The bandage also has knots and fasteners to prevent accidental unwinding during use. The invention provides a complete combination with all the necessary materials for the quick and safe treatment of wounds, with emphasis on quick application and effective control of complications.

The invention discloses an anti-falling drainage device for thoracic surgery nursing, and particularly relates to the technical field of medical nursing instruments.The device comprises a loading table and a silica gel protection plate, and the silica gel protection plate is used for being attached to the chest wall of a patient. A detachable drainage bottle is arranged at the top of the loading table, and the drainage bottle and the loading table are communicated through an infusion tube assembly capable of being rapidly clamped. An adjustable fixed clamping plate is arranged outside the loading table and is used for stably fixing the drainage bottle; and a rotatable and lifting-adjustable storage hook is further arranged, so that hanging and placing are facilitated. The silica gel protection plate is provided with the elastic bandage and the hook-and-loop fastener and used for being fixed to the body of a patient comfortably and reliably. Particularly, a rotary clamping assembly composed of a containing clamping block, a round wheel block, an oval block and the like is designed at the connecting position of the infusion tube and the silica gel protection plate, the rotary clamping assembly is matched with a special clamping groove structure on an infusion tube connector, rapid and firm inserting and pulling connection is achieved, and the connecting position is effectively prevented from loosening caused by movement of a patient. The drainage device is reasonable in structural design, and safety in the drainage process and comfort of a patient are improved.

The invention provides a self-adaptive dynamic pressing device for an orthopedic bone fracture plate, and relates to the technical field of medical instruments. The self-adaptive dynamic pressing device for the bone fracture plate in the orthopedics department comprises a bottom plate, a plurality of side plates are arranged on the two sides of the bottom plate respectively, first pressing pieces are arranged at the bottoms of the bottom plates respectively, second pressing pieces are arranged on the side walls, close to the outer sides, of the side plates respectively, and by taking one second pressing piece as an example, each second pressing piece comprises a second quick connector; the second quick connector is fixedly connected to the center of the side wall, close to the outer side, of the side plate, nine second piston cylinders are fixedly connected to the center of the side wall, close to the inner side, of the side plate in a rectangular arrangement mode, and one end of the second quick connector penetrates through the side wall, close to the inner side, of the side plate; and the end part is fixedly connected to the second piston cylinder at the central position. And through the arrangement of the second pressing piece, the situation that capillary vessels are pressed when the swelling position is continuously pressed is reduced, complications caused by uneven pressure are avoided, and it is guaranteed that the fracture end is effectively fixed.

The utility model discloses a kind of anti-disengagement urethral support, belong to urethral support technical field, including support body, the inside fixed connection of support body has inner protection component, the outer surface of support body is sleeved with fixed component;By the inner protection component set, by smooth pipe, the inside of support body is protected, urine can be effectively avoided to directly contact support body, prevent urine pollution and accumulation, to reduce cleaning maintenance difficulty and bacterial breeding risk, reduce the possibility of infection, simultaneously, the open design of sealing ring is arc, cooperate the structure of smooth pipe, the impact force of urine to the device can be effectively slowed down, improve the flow effect, can guarantee the stability and security of device operation, by the fixed component set, by the position of support body can be firmly fixed by outer protection pipe and fastening air bag, effectively prevent its displacement or fall off in use process, further guarantee the stability of fixed.

The utility model relates to the field of medical equipment, and particularly discloses a simple breast cancer postoperative rehabilitation supporting chest strap which comprises a supporting mechanism, the supporting mechanism comprises a lining pad and a lacing line, a bottom limiting block is installed at the lower end of the lacing line, an installation through hole is formed in the lining pad and corresponds to the outer side of the lacing line, and the bottom limiting block is connected with the installation through hole. A hook-and-loop fastener is installed at the upper end of the lacing line, and a position adjusting rope is arranged between the hook-and-loop fastener and the bottom limiting block and located on the outer side of the lacing line. The whole structure of the supporting mechanism is simple, the contact area between the supporting mechanism and the breast after the operation is small, the purpose of being convenient to put on and take off can be achieved, and meanwhile compression and friction to the breast position of a patient can be reduced when the supporting mechanism is put on.

This invention provides an abdominal imaging diagnostic device, belonging to the field of imaging diagnostic technology. It includes a base plate and an ultrasound probe. A clamp is fixedly connected to the bottom of one end of the base plate, and a support plate is fixedly connected to the end of the base plate near the clamp. The support mechanism is used to support and position the pregnant woman's body. By setting up the support mechanism, this invention allows the first and second curved plates to support the pregnant woman's lower back during diagnostic examinations while she is lying supine on the examination bed. This effectively reduces the pressure of the enlarged uterus on the inferior vena cava, increases venous return, and alleviates supine hypotension syndrome caused by prolonged supine position. When the pregnant woman is in a lateral decubitus position, the second curved plate provides support and restraint for her lower back, not only improving the support and comfort of the pregnant woman's back but also effectively preventing her body from slipping back into the supine position during the examination, ensuring the stability of the diagnostic position.

The utility model provides an ECMO catheter fixing device. The ECMO catheter fixing device sequentially comprises a skin adhesive tape making contact with the skin of a patient, a liner layer, a connecting band and a catheter adhesive tape making contact with an ECMO catheter. The number of the connecting bands can be two, and the two connecting bands are spaced by a set distance in the extending direction of the ECMO catheter. Each connecting band is connected with two catheter adhesive tapes, and each catheter adhesive tape has the length capable of winding the ECMO catheter by at least two circles. The ECMO catheter fixing device provided by the utility model can enhance the fitting degree of the catheter and the skin and the stability of the catheter, effectively fix the catheter and prevent the catheter from shifting, loosening or twisting, and simultaneously reduce the compression on the skin and limbs of a patient, thereby reducing the treatment risk and ensuring the smooth ECMO treatment.

The utility model relates to foot bracket technical field, and disclose a kind of diabetic foot nursing bracket, including a mounting frame body frame on support frame, still include: arc bracket, detachably installed in the top of frame body frame;Several supporting rollers are evenly arranged and installed on arc bracket;Roller shaft is fixedly installed on the supporting roller, and the roller shaft is detachably installed on arc bracket.The diabetic foot nursing bracket, by the combination support structure of arc bracket and several supporting rollers, can evenly support the foot of patient on multiple supporting rollers, avoid single point or local pressure concentration, help to reduce the compression on diabetic foot;Arc bracket and supporting roller are all detachable design, facilitate disassembly and cleaning, maintain the sanitation of device, reduce the risk of cross infection.

The utility model provides a multifunctional nasal high-flow oxygen supply tube, which belongs to the field of medical equipment and comprises an oxygen supply component and a fixing component, and one end of the oxygen supply component is connected to the middle of the fixing component. The fixing assembly comprises a fixing part and an elastic band, the two ends of the elastic band are connected with the two ends of the fixing part respectively, decompression cotton pieces are arranged in the middle and at the two ends of the bottom end of the fixing part respectively, a connecting block is arranged at the top end of one side of the fixing part, a connecting hole is formed in the middle of the connecting block, and a string is arranged in the connecting hole. The oxygen supply assembly comprises a nasal catheter, a hose and a connector, the nasal catheter is connected to the middle of the fixing part, two nasal plugs are arranged on one side of the nasal catheter and penetrate through one side of the fixing part, a limiting assembly is arranged between the two nasal plugs and arranged on one side of the fixing part, one end of the hose communicates with one end of the nasal catheter, and the other end of the hose communicates with the other end of the nasal catheter. The other end of the hose is communicated with one end of the connector, and the end, close to the connector, of the hose is communicated with an anti-backflow water collection bottle.

This utility model belongs to the field of medical supplies technology and discloses a special hospital gown for heart failure patients, including a hospital gown top and hospital gown pants. The hospital gown top includes a main body and two sleeves. The shoulder blade position and the upper back position are respectively provided with a back pressure relief component and a foldable back placket. The sleeves are provided with an inflatable blood pressure buckle and a sleeve opening seam. The inflatable blood pressure buckle is located on the upper part of the sleeve. The sleeve opening seam extends from the middle of the sleeve to the cuff. The back pressure relief component includes a storage pocket and a pressure relief pad housed in the storage pocket. The main body of the top is also provided with a pocket opening connector. The back pressure relief pocket is added to the back of the top, which is convenient for placing a jelly pad when needed, thereby reducing the pressure on the back of the head of long-term bedridden patients and preventing pressure injury. The crotch opening of both sleeves is designed with Velcro closure, which makes it easy to open quickly when collecting blood and reduces the problem of difficulty in rolling up the cuffs due to ill-fitting clothing.

The special medical decompression cushion comprises a cushion body, a hip position groove for containing the hip is formed in the upper portion of the cushion body, a thigh slope for containing the thigh is arranged at the position, close to the hip position groove, of the top of the cushion body, and two shank grooves are formed in the lower portion of the cushion body; when the patient is in a kneeling posture, the crus groove of the cushion body is buckled on the periphery of the crus, the hip sits in the hip position groove, and the thigh leans against the thigh slope. According to the medical special pressure reduction cushion, through the design of the hip position groove and the thigh slope, the pressure of the hip and thighs of a patient is effectively dispersed, direct compression on the surgical site is reduced, and therefore the pain feeling is relieved, the wound cracking and infection risks are reduced, and postoperative recovery is promoted. The shape and the structure accord with ergonomics, and comfortable support is provided for a patient. When a patient kneels, the shank grooves stably buckle the shanks, so that the body is kept in a comfortable posture, the shanks are prevented from being pressed, and discomfort caused by long-time sitting and standing is reduced.

The utility model relates to power system maintenance equipment technical field, specifically disclose an intelligent operation and maintenance wearing equipment based on power system, including foot cover, arm rotating part, rotating hydraulic rod, rotating connecting piece, waist connecting piece, waist support, leg connecting piece, bottom rotating part, foot connecting piece, foot stop piece and limit rod. Arm rotating part is connected with foot cover rotation, is driven by rotating hydraulic rod, and rotating connecting piece can swing horizontally and is limited angle through rotating stop piece. Waist connecting piece and support form double support, and leg, bottom rotating part multidirectional rotation, and limit rod limits rotation angle. The equipment still includes symmetrical arm rotating part and synchronous drive system, has double fixed structure's connecting bandage, has the waist support of hook and ground wire, antiskid and adjustable foot structure, leg buffer pad, waist fixing waistband and foot cover heat dissipation hole. The equipment promotes operation and maintenance safety, flexibility and efficiency, is suitable for power system operation and maintenance scene.

The utility model relates to the field of medical apparatus and instruments especially is adjustable postpartum seat cushion. The utility model discloses from outside to inside detachable cover set's first annular inflatable air mattress, second annular inflatable air mattress and third annular inflatable air mattress, detachable cover set in the center circular inflatable air mattress of third annular inflatable air mattress, the annular water injection air bag of fixedly established first annular inflatable air mattress, second annular inflatable air mattress and third annular inflatable air mattress upper surface, the circular water injection air bag of fixedly established center circular inflatable air mattress upper surface and the breathable non -woven cover of cover set on annular water injection air bag and circular water injection air bag upper surface, the utility model discloses the purpose lies in providing a kind of adjustable postpartum seat cushion, to solve the fixedness of the inner diameter in the hollow part of existing postpartum pad, cannot be flexibly adjusted and when using and easily make patient hip part stuffy, use flexibility is poor, and the problem of low comfort.