35 results about "Stabbing wounds" patented technology

The invention relates to a disposable single hand insertion tube type vein detaining needle (shown as in the abstract drawing) which can simplify the operation process of a nursing technique, improve the venipuncture success rate, relive patients' pain and save medial treatment materials. On the basis of the original vein detaining needle, the handle of the detaining needle is transformed into an anastomosis handle, the anastomosis handle extends forwards about 2 mm, two longitudinal semicircular bulges are designed on the upper surface of the anastomosis handle, a miniature baffle plate is additionally arranged on the rear edge of the lower surface of the anastomosis handle, four protuberances are designed on the lower surface of the anastomosis handle, an anastomosis side wing is additionally arranged on a trocar bed of the indwelling needle, two semicircular grooves are designed in the lower surface of the anastomosis side wing to be matched with the longitudinal semicircular bulges on the upper surface of the handle, a miniature baffle plate is additionally arranged on the front edge of the anastomosis side wing, and four protuberances are designed on the lower surface of the anastomosis side wing. During venipuncture, after blood returning, a cannula is pushed into a vessel by the thumb of a right hand without the need of exchanging hands, so that the delivering of a detaining needle cannula by a single hand can be achieved, the operation process is simplified, the vessel is not liable to puncture, the success rate is improved, and the patients' pain is relieved.

A mechanical stapling device for fastening deep tissue during the closing of peritoneal side of a stab wound, which is associated with a laparoscopic surgical procedure, is provided. Also provided is a unique staple for use with the stapling device of the present invention. A method of using the device and staple of the present invention is also provided.

The present invention belongs to the field of medical article, and is especially one kind of disposable stab-preventing syringe cap, which is one telescopic hollow cap fixed onto the seat of the syringe and comprising several successively interlinked sleeves and has one inside ring to form a cavity and with two piston holes in the side wall and one ring piston buckle outside the cavity. The present invention has the advantages including capacity of avoiding stab by the used syringe, no contamination, possibility of being separated from the syringe tube, etc.

The invention discloses an external traditional Chinese medicine preparation for treating trauma and infection. The preparation is characterized by being composed of the following traditional Chinese herbals in parts by weight: 10 to 15 parts of hyperforin perforatum, 5 to 10 parts of phellodendron, 15 to 20 parts of esliptae herba, 20 to 30 parts of myrtle leaf, and 10 to 15 parts of mangosteen. The preparation has the functions of diminishing inflammation, relieving pains, expelling pus, dispelling putridity, stopping bleeding, sterilizing, clearing heat, removing toxicity, and dissipating stasis; has a prominent curative effect on burns, scratches, stab wounds, and the like, and has the advantages of no side or toxic effect, user-friendliness, and low cost.

The invention provides a safe and protective cap recovering device for a needle stab wound used for an injector. The device includes a supporting assembly, a positioning assembly, a separation assembly, and a sharps box; the supporting assembly includes a bottom frame and a supporting bar; the supporting bar is disposed on the bottom frame; the supporting bar adopts an inverted L shape; the separation assembly is disposed on the supporting bar; the positioning assembly is disposed on the bottom frame; the separation assembly is disposed above the positioning assembly; the positioning assemblyis arranged above the sharps box, and the sharps box is disposed in the bottom frame; the positioning assembly comprises a left frame, a right frame, a left side plate, a right side plate, a rotatingrod, a reset tension spring I, a positioning bolt and a positioning nut; and through arrangement of the positioning assembly, the device can achieve positioning of a needle cap of the injector, and after positioning, the device facilitates separation operation of the needle cap or a needle head of the injector. Through arrangement of the separation assembly, the separation operation of the needlecap or the needle head of the injector can be achieved, operation is simple and safe, the needle stab wound can be effectively avoided, and the purpose of safety and protection is achieved.

The invention discloses medicinal liquor for relieving swelling and pain. The medicinal liquor comprises the following raw materials in parts by mass: 400 to 600 parts of radix linderae, 400 to 600 parts of fructus psoraleae, 260 to 300 parts of rhizoma smilacis glabrae, 400 to 600 parts of fructus crataegi, 400 to 600 parts of whole plumbago zeylanica, 500 to 800 parts of raw frankincense, 400 to 600 parts of radix mallotus apelta, 400 to 600 parts of rhizoma curcumae, 800 to 1200 parts of rhizoma cimicifugae, 260 to 300 parts of raw rhizoma arisaematis, 400 to 600 parts of paederia scandens roots, 400 to 600 parts of herba rhododendri daurici, 400 to 600 parts of herba equiseti hiemalis roots and 30000 to 50000 parts of rice wine. The medicinal liquor for relieving swelling and pain has the efficacy of relieving swelling and pain, relaxing tendons, activating collaterals, removing blood stasis and stopping bleeding and expelling pus. The medicinal liquor is mainly used for treating traumatic injury, traumatic injury, traumatic bruise, acupuncture point injury, hand and foot sprain, cervical vertebra sprain, lumbar muscle strain, long-term joint swelling and pain, rheumatic joint ache, rheumatoid swelling and pain, hand, foot and finger knife wound bleeding, head blood vessel curl headache, head injury swelling and pain, long-term injury pain, swelling and pain of various substance stabbing wounds, infection, caking and suppuration and unsmooth blood and qi.

The invention discloses a disposable re-covering-puncture-preventing type sterile injection needle and belongs to the technical field of medical instruments. The injection needle comprises a syringe and a syringe needle and further comprises a re-covering-puncture-preventing type structure which comprises a fixing base, a needle cap movably fixed to the fixing base and a rotating structure which is arranged between the fixing base and the needle cap and can rotate the needle cap out of the fixing base. Due to the re-covering-puncture-preventing type structure, a medical worker can freely perform re-covering operation, the fingers of the medical worker will not be punctured, the safety of the injection needle can be improved, and the medical worker is happy and free of psychological load so that work efficiency and quality can be improved.

The invention relates to a pair of forceps for a lid-folding operation, which is a simpler tool for lid-folding operation on easterners. A folded lid can be made only by using the forceps without other tools such as a bistoury, a thread and a needle. The forceps of the invention has a structure that: an upper occlusion part 20 and a lower occlusion part 30 are additionally arranged on handle parts 10a and 10b respectively; a plurality of needle plates capable of causing multiple traumas (stab wound, incised wound and press wound) are formed on the inner side face of the upper occlusion part 20; and a contact plate 32 is arranged on the inner side face of the lower occlusion part 30 which is as long as or slightly longer than and corresponds to the upper occlusion part 20. The forceps for the lid-folding operation of the invention form a folded lid by the following steps: multiple traumas (stab wound, incised wound and press wound) are caused on a relatively thin tarsus of a lid and the lid below the folded lid to be formed or an electrical injury is caused on the basis of the multiple traumas; the injured tissues naturally cicatrize; and scar tissues between the tarsus and corium conglutinate to form a conglutinate line. Based on the principle, the forceps for the lid-folding operation of the invention have the advantages of providing convenience and easiness to operators, and greatly saving experience and time for the easterners (Korean) to whom the lid-folding operation is very common, along with short operation time and simple and easy operation method.

The present invention provides an intelligent drawing toy for children. The intelligent drawing toy comprises a drawing interface and a base. The drawing interface is connected with the base; the drawing interface comprises three parts of the left part, the middle part and the right part; the left part of the base is provided with control elements required by the left part of the drawing interface; a drawing area is arranged in the middle part of the base; the right part of the base is provided with control elements required by the right part of the drawing interface; and the remaining base cavity is provided with a controller, a data memory, a power switch, a battery slot, and a power charging socket. The intelligent drawing toy for children provided by the present invention is more in line with the sequential characteristics of the psychological development of children, the intuitive color selection keyboard and the graphic selection keyboard can better stimulate the drawing interest of the children, and each adjustment knob has the advantages of easy operation and flexible use; and according to the intelligent drawing toy for children provided by the present invention, without using a pencil or a magnetic pen, the phenomenon of children stab wound by pen tips can be avoided, and the painted image can be easily saved.

The invention relates to a safety device for a syringe for avoiding stab wounds, said syringe having a syringe body and a piercing means arranged on the distal end of the syringe body. The safety device comprises a sleeve element (6) that extends along an axial direction (X) and encloses at least partly the piercing means and the syringe body, said sleeve element being rotatably mounted on a distal end region of the syringe body. The safety device is characterized by comprising a contact element (7) which contacts the skin of a patient when the syringe is used, said contact element being arranged on the distal end of the sleeve element and being rotatable independent of the sleeve element.

The present invention relates to a picker, in particular to a picker for Chinese prickly ash which avoids stabbing. The technical problem is how to design a prickly ash picker that can facilitate people to pick prickly ash, and can collect the picked prickly ash, avoid falling to the ground and need people to pick it up, and save labor and avoid stabbing. A prickly ash picker for avoiding stab wounds, comprising: a collection frame, a handle is fixedly connected to the outer part of the collection frame in the circumferential direction; A frame part, which cooperates with the collection frame. In the present invention, the movable frame is in contact with the Zanthoxylum bungeanum by moving the device, and the Zanthoxylum bungeanum is placed between the upper and lower movable frames, and the pull rod is moved to the left, so that the two movable frames can swing inward and move to the left to pick the Zanthoxylum bungeanum. There is no need to pick the prickly ash by hand, avoiding being stabbed, and the picked prickly ash can also be collected.

The present invention provides a lancet device with a separable lancet, comprising a pen body and a needle holder, the pen body comprising a first pen body, a second pen body and a connecting part, and the needle holder is arranged on the first pen body and the needle holder. Between the second pen bodies, a first guide channel is arranged in the second pen body along the axial direction, and a second channel is arranged in the needle seat, the needle seat has a first state and a second state, and the first pen body A striker assembly is provided, the striker assembly including a striker rod coaxial with the first guide channel, the striker rod being configured to be capable of knocking the needle inside the needle hub when the needle hub is in the first state. The blood collection needle is bumped into the first guide channel, and the blood collection needle is slid in the first guide channel to form a puncture action. This setting method can avoid the process of repeatedly disassembling and assembling the pen cap, and remove and install the blood collection needle until the When the needle seat is used, the medical staff does not need to touch the needle head of the blood collection needle, which can effectively avoid the phenomenon of cross-contamination and hand stab wounds.

The invention discloses a liniment for treating burns and scalds. The liniment is prepared from the following raw materials in parts by weight: 2-4 g of camphor, 3-5 g of borneol, 2-4 g of pseudo-ginseng, 3-5 g of flos carthami, 3-5 g of radix dipsaci, 2-4 g of teucrium viscidum, 4-6 g of herba melastomatis candii, 3-5 g of radix rehmanniae recen, 2-4 g of sanguis draxonis, 4-6 g of herba stachytarphetae jamaicensis, 4-6 g of root of dentiferous dendropanax, 4-6 g of rhizoma sparganii and 480-520 g of pure rice wine with the alcohol content of 28-30 degrees. The liniment disclosed by the invention has excellent effects on traumatic infection caused by burns and scalds, particularly infection which is not cured for a long time, refractory ulcer as well as mucosa, suppuration, pus and skin rot of wounds, takes effect after being applied for 10-20 minutes, and also has excellent effects on wounds, scabies, scall, bite wounds of poisonous snakes, hornets and ants and stab wounds.

Disposable anti-stab syringe, including push rod, syringe marked with scale and injection needle, is characterized in that: there are two symmetrical bumps on the side wall of the closed front part of the syringe, and the outer layer of the syringe is covered with sliding parts. Sleeve, the sleeve is provided with two symmetrical slots, the slots are inserted into the protrusions at the front of the syringe, the end of the sleeve is provided with a ring-shaped raised edge, the top of the sleeve is provided with a nipple end, and the nipple end is provided with a Semi-circular snap and box snaps. When leaving the factory, the sleeve is pulled out, and the sub-buckle and the female buckle are not fixed, which play the role of a needle cap to seal the injection needle, and the entire syringe is packed in a sterile plastic bag. When in use, the sleeve is pulled back to expose the injection needle for injection. After use, the sleeve is pushed out, and when the injection needle is completely covered in the sleeve, the buckle on the nipple end is fastened to form a one-time use effect. The invention can effectively avoid the problems of injection needle pollution, needle stick injury and recycling of injection needles.

The invention discloses a nasal cavity nursing device for infants. The device comprises a support part and a medicine application part, wherein the support part comprises a handle component and a support pipe, and the medicine application part comprises a hollow medical rubber ellipsoid, a sponge body for medicine application and an air bag; the upper end of the handle component is fixedly connected with the lower end of the support pipe, the hollow medical rubber ellipsoid is mounted at the upper end of the support pipe, the hollow medical rubber ellipsoid covers the sponge body for medicineapplication, and the sponge body for medicine application covers the air bag; an air guide pipe with a first end communicating with a cavity fluid in the air bag is arranged in the support pipe, and asecond end of the air guide pipe communicates with the atmosphere; and a via hole penetrating through the wall of the hollow medical rubber ellipsoid is formed in the hollow medical rubber ellipsoidpositioned on the outer side of the support pipe. The nasal cavity device can avoid stab wounds of faces or nasal cavities of the infants, wet booger by a liquid and control liquid dripping quantity,and prevent excessive liquid from entering the deep position of nostrils or tracheas.

The invention discloses an external traditional Chinese medicine preparation for treating trauma and infection. The preparation is characterized by being composed of the following traditional Chinese herbals in parts by weight: 10 to 15 parts of hyperforin perforatum, 5 to 10 parts of phellodendron, 15 to 20 parts of esliptae herba, 20 to 30 parts of myrtle leaf, and 10 to 15 parts of mangosteen. The preparation has the functions of diminishing inflammation, relieving pains, expelling pus, dispelling putridity, stopping bleeding, sterilizing, clearing heat, removing toxicity, and dissipating stasis; has a prominent curative effect on burns, scratches, stab wounds, and the like, and has the advantages of no side or toxic effect, user-friendliness, and low cost.

The invention relates to a Chinese medicine for remedying fish bone stab wound infection. The invention is made from the raw materials with the following weight portions of 30-40g of honeysuckle, 15-20g of perilla, 10-15g of forsythia, 10-15g of scutellaria, 10-15g of red peony root, 10-15g of catnip, 10-15g of radix saposhnikoviae, 15-20g of radix rehmanniae root, 15-20g of pollen, 3-6g of rhubarb and 8-10g of liquorice. The Chinese medicine is simple to be prepared, has low cost, large range of raw materials source, convenient usage method, quick curative effect, and high cure rate, does not have any side effect, and has 100 percent of effective rate and 85 percent of cure rate. The general sufferers can be cured by taking three doses, and the severe sufferers can be cured by taking six doses. The curative effect is stable so that the illness is not easy to relapse.

The invention relates to a disposable stab-preventing infusion needle, which comprises a protective cap and an infusion needle body connected to the tail end of an infusion tube, wherein the infusion needle body is inserted in the protective cap; an opening is formed in the head end of the protective cap; a boosting handle is arranged at the tail end of the protective cap; a protective cap sliding groove, which is designed in a head-tail direction of the protective cap, is formed in the outer wall of the protective cap; a needle cap sleeves the infusion needle body; an infusion needle tube connecting head, which is inserted in the protective cap, is arranged at the tail end of the infusion needle body; and an infusion needle handle, which runs through the protective cap sliding groove, is arranged on the infusion needle tube connecting head.

The invention discloses an arc-shaped utility knife capable of actively triggering and reducing damage, which includes a knife shell, a storage track groove is provided at the middle position inside the knife shell, and a moving slide plate is slidably connected to the inside of the storage track groove, and the inside of the moving slide plate is uniform. A safety limiting groove is provided, and a safety carrier plate is arranged above the moving slide plate. The bottom surface of the safety carrier plate is evenly and fixedly connected with a safety limit bar, and the top of the safety carrier plate is fixedly connected with a transmission insert rod, and the outer side of the top of the drive insert rod is sleeved. An adjustment pressing plate is slidably connected, and an auxiliary mounting plate is fixedly connected to the right side of the transmission insert near the bottom, and a cutting blade mechanism is provided between the mounting groove and the auxiliary mounting plate. The present invention relates to the field of hardware technology. The arc-shaped utility knife capable of actively triggering and reducing damage can reduce the depth of stab wounds when the utility knife is used as a murder weapon, and improve the safety of the utility knife.

A stab-resistant syringe needle with an elastic protective cap and a stab-resistant syringe are provided, which include the elastic protective cap. After the syringe is used to complete injection, the protective cap can be automatically ejected through simple operations to shield a steel needle, so as to achieve a purpose of preventing stab wounds.

The invention relates to an anti-stab treatment device for medical waste needles and a treatment method thereof. The existing medical waste needles are easy to stab people and cause infection when they are disposed of. For this reason, the present invention includes a collection box for waste needles and a bending mechanism for medical waste needles. The bending mechanism for medical waste needles includes a base plate, an F-shaped support frame, a vertical axis cylinder, a bending shaft and a needle sleeve, and the F-shaped support frame includes Upright, upper cross arm and lower cross arm, wherein the lower end of the upright is fixed on the base plate, the upper cross arm is fixedly connected with the top of the upright, the lower cross arm is fixed in the middle of the upright, and the outer end of the upper cross arm and the outer end of the lower cross arm are on the horizontal plane The projections are staggered from each other, the vertical shaft tube is fixed on the outer end of the upper cross arm, the needle sleeve is fixed on the outer end of the lower cross arm, the bending shaft is installed in the vertical shaft tube, the upper end of the bending shaft is exposed from the vertical shaft tube, and connected to a On the rocking handle, a vertical cutting groove is formed at the lower end of the bending shaft, and a longitudinal locking groove is formed at the bottom of the card needle sleeve. The invention has the advantages of simple structure, convenient use, safety and high efficiency, and is widely applicable to various medical institutions.

The invention relates to a multi-positioning-fault detection complex wiring audio detector which comprises a shell and a testing probe arranged at the top end of the shell. A tail section of the testing probe is connected with a pin arranged in shell, an internal thread hole is formed in the tail end of the shell, an adjusting plug is connected in the internal thread hole in a threaded manner, an internal thread is formed in the adjusting plug, the end of the pin is connected with a screw, the tail end of the screw is connected with the adjusting plug, the adjusting plug is rotated to drive the screw to move upwards, and then the screw drives the testing probe to move upwards. Due to the design mode, when the multi-positioning-fault detection complex wiring audio detector is in use, the testing probe can be extended out easily by only clockwise rotating the adjusting plug; when the multi-positioning-fault detection complex wiring audio detector is not needed, the testing probe can be extended in conveniently by only rotating the adjusting plug anticlockwise, so that stab wound and bad contact caused by the fact that the testing probe is exposed for a long time are avoided.

The invention relates to a disposable device capable of preventing needle-stick injuries. The disposable device capable of preventing needle-stick injuries comprises a clamp body, a baffle plate and two handles; the clamp body is composed of a clamping plate I and a clamping plate II which are connected with each other through an elastic component, a solid clamping cavity is formed between the clamping plate I and the clamping plate II, the baffle plate is located on one side of the clamp body, one end of the baffle plate is fixedly arranged on one end face of the clamping plate I or one end face of the clamping plate II, and the two handles are arranged on the clamping plate I and the clamping plate II respectively. The clamp body is an elastic clamp body, the the clamping plate I is connected with the clamping plate II through a middle connecting plate, the clamping plate I, the middle connecting plate and the clamping plate II are sequentially connected into a whole, and solid clamping cavities are formed among the clamping plate I, the middle connecting plate and the clamping plate II. According to the disposable device capable of preventing needle-stick injuries, a needle tip can be wrapped in the clamp body, and the stabbing event caused by the situation that the needle tip protrudes out of a clamp is prevented.

The present invention provides an ostomy appliance, comprising a support unit, the support unit includes a support portion and a fixing portion, the fixing portion includes a first fixing portion connected to the distal end of the support portion, and the first fixing portion It includes a plurality of first fixing parts, the proximal end of the first fixing part is connected with the distal end of the support part, the distal end of the first fixing part is away from the support part and can be turned radially outward to form a curl structure. In the ostomy appliance provided by the present invention, the fixing part can be turned outwards to form a curled structure, and the fixing part forming the curled structure will not cause stab wounds to the tissue; and the distal end of the fixing part can be stretched from the curled structure to a straight line structure under force , to facilitate the recycling of ostomy appliances, and avoid the human body's rejection reaction due to long-term foreign body implantation.

The invention relates to a safety device for a syringe for avoiding stab wounds, said syringe having a syringe body and a piercing means arranged on the distal end of the syringe body. The safety device comprises a sleeve element that extends along an axial direction (X) and at least partially encloses the piercing means and the syringe body, and an inner element which is at least arranged at least in sections inside the sleeve element and surrounds the piercing means. Said safety device is characterised in that the inner element comprises a rim section and a piercing means protection sectionsurrounding the piercing means. Said rim section can be arranged on a distal end of the syringe body, the safety device is secured to the syringe body, and the piercing means protection section can beremoved from the rim section before using the syringe.

The invention discloses a conical head sleeve for a laboratory rat in the field of a laboratory appliance. The conical head sleeve comprises a framework, wherein a leather sleeve covers the outside of the framework; the framework comprises a left half frame, a right half frame and a rotating shaft; the left half frame is movably connected with the right half frame through the rotating shaft; a fixed frame is respectively arranged on the outer side edge of each of the left half frame and the right half frame in the length direction; the two fixed frames are in symmetrical arrangement by using the rotating shaft as an axis; a flexible connecting rod is connected onto each of the two fixed frames; a fixed ear stud is movably connected onto each of the two flexible connecting rods; the two fixed ear studs are in a collineation state in the length direction; one end of each fixed ear stud is made into a sharp end inserted into the rat ear; a finger ring used for fixing a finger of an experiment person is fixedly connected onto the rotating shaft; at least one fixing rack is fixedly connected onto the outer side in the length direction of the left half frame; a fixing buckle matched with the fixing rack in a buckling and connecting way is connected onto the right half frame. Through the blocking by the leather sleeve, the stab wound probability of the finger of the experiment person by the teeth of the laboratory rat is reduced; the finger of the experiment person can also conveniently realize the tight holding according to the concrete shape of the head of the laboratory rat.

The invention discloses a sliding groove type transfusion needle guard. After clinical transfusion is finished, a nurse inserts a transfusion needle into a transfusion bag to be stored, and the process can stab the nurse easily. The sliding groove type transfusion needle guard is of a circular platform structure with openings at two ends. A slot penetrating through the side face is formed in the sliding groove type transfusion needle guard in the axial direction. The slot sequentially comprises an installing groove, a containing groove, a sliding groove and a working groove. The installing groove is formed in the end with large diameter of the sliding groove type transfusion needle guard, the top of the installing groove is opened, and the bottom of the installing groove is opened on the top of the containing groove. The bottom of the containing groove is opened at one end of the sliding groove, the other end of the sliding groove is opened on the top of the working groove, and the bottom of the working groove is closed. A first limiting protrusion is arranged on one side of the containing groove and located on the sliding groove, and a first positioning groove is formed in one side of the sliding groove and located on the sliding groove. A second limiting protrusion is arranged on one side of the working groove and located on the sliding groove, and a second positioning groove is formed in the other side of the working groove and located on the sliding groove. The sliding groove type transfusion needle guard is simple in structure, low in cost and good in anti-stabbing effect.

The present invention relates to a safety device for avoiding stab wounds for a syringe comprising a syringe body and a piercing mechanism arranged at the distal end of the syringe body. The safety device includes a sleeve element extending in the axial direction (X) and at least partially surrounding the piercing mechanism and the syringe body, and also includes a sleeve element disposed on the distal region of the syringe body and locking the safety device in the axial direction (X). A collar element comprising at least one guide projection which engages in at least one guide rail of the sleeve element. The safety device further comprises a cap element arranged to be at least partially seatable on the sleeve element and by means of which the sleeve element can be locked with respect to movement of the syringe body relative to the sleeve element.

The invention relates to the field of medical apparatus and instruments, and discloses a multi-purpose pricking-wound-preventing apparatus and a use method of the multi-purpose pricking-wound-preventing apparatus. The multi-purpose pricking-wound-preventing apparatus comprises a spine part clamping part, a sleeve, spiral springs and a base, wherein the spine part clamping part is composed of a handle and a plurality of clamping clacks connected with the handle, and all the clamping clacks are annularly arranged and surround to form a spine part insertion hole. Through the mechanical coordination of the sleeve, the springs and the base, the clamping force of the spine part clamping part for the spine parts of various apparatuses, such as needles, burrs of the dental department, and file-expanding needles for machines is controlled, the assembly or disassembly of the spine parts of the apparatuses can be conveniently carried out, meanwhile, the spine parts of the apparatuses are covered by the clamping part, so that the human body is prevented from being punctured, and the safe connection for use of the sharp apparatuses with consumable items, instruments and equipment can be guaranteed, and in addition, the multi-purpose pricking-wound-preventing apparatus can clean the spine parts of the apparatuses, and is simple in structure, convenient to assemble and disassemble, low in cost, and suitable for practical promotion and application.