Separator easy to fall off

Abstract

A separator easy to fall off comprises a valve body, a screw joint structure, an output end and a clamping type needle-free connector module. The clamping type needle-free joint module comprises a movable closed joint and a needle-free connector. The movable closed joint comprises a body, a first combination part and a first elastic valve. The body comprises a sleeve and a first clamping part. The first clamping part is a convex block and is arranged on the sleeve; the needle-free connector comprises a shell, a second combination part and a second elastic valve, the shell or the second combination part is provided with a second clamping part, the second clamping part is a protruding block, the force of fixing the first clamping part to the second clamping part is 1.4-8.1 Newton meters, and the needle-free connector has the effect of being easy to separate. Even if the patient moves randomly, the movable closed joint and the needle-free connector can be separated immediately, liquid medicine and blood are prevented from leaking, and the movable closed joint and the needle-free connector can be disinfected by using an alcohol cotton piece so as to be reused.

Description

Technical Field

[0001] The invention relates to a separator for an infusion system, in particular to a separator which is easy to fall off. Background Art

[0002] US Patent No. 10,688,295B2 discloses a drug mixing device, wherein the drug mixing procedure includes the following steps:

[0003] According to the doctor's instructions, a vial containing a certain ingredient is taken out, and the vial contains a powder of a certain ingredient; according to the doctor's instructions, a soft bag containing a dilution solution is taken out; the vial is connected to the integral vial adapter of the needleless additive port, and the puncturing member of the vial adapter punctures the vial cap of the vial (IV one end of the puncture part punctures the film of the infusion tube of the soft bag; the soft bag is placed on top and the medicine bottle is placed on the bottom, the soft bag is squeezed, and the dilution solution in the soft bag passes through the opening and channel of the puncture part, the second flow channel of the output part, the first flow channel of the connection part and the insertion needle, and then enters the interior of the medicine bottle; the medicine bottle is shaken to slightly mix the powder in the medicine bottle to obtain a high-concentration liquid medicine; then the soft bag is placed on the bottom and the medicine bottle is placed on the top; the soft bag is squeezed, and the air in the soft bag passes through the through hole and the long hole of the puncture part, the second flow channel of the output part, the first flow channel of the connection part and the insertion needle, and then enters the interior of the medicine bottle, and then the hand is released to suck out the liquid in the medicine bottle, and this step is repeated in a cycle until the liquid in the internal medicine bottle is ensured to be completely sucked into the soft bag.

[0004] The infusion procedure of the existing drug mixing device includes the following steps: step (a), removing the plug of the connector (administration port) from the other end of the tube body; step (b), setting the infusion liquid drip sleeve at the other end of the tube body and passing through the blocking part (sealing membrane), so that the infusion liquid drip sleeve communicates with the second flow channel of the output part through the third flow channel of the tube body; step (c), the soft bag is on the top and the infusion liquid drip sleeve is on the bottom, and the diluted medicine in the soft bag passes through the through hole and the long hole of the puncture part, the second flow channel of the output part, the third flow channel of the tube body and the infusion liquid drip sleeve in sequence into the patient's body.

[0005] However, when the high-concentration liquid medicine in the medicine bottle passes through the long hole of the puncture part, the air enters and the liquid medicine cannot be completely sucked out at one time, which will cause part of the high-concentration liquid medicine to adhere to and remain in the long hole of the puncture part. When the air in the soft bag passes through the long hole of the puncture part, the air will push all the high-concentration liquid medicine attached to the inner wall of the channel of the puncture part into the space between the second flow channel of the output part and the plug hole, and the air will be blocked by the tube body, forming residual high-concentration liquid medicine. Even if the soft bag is loosened, the high-concentration liquid medicine remaining in the space between the second flow channel of the output part and the plug hole cannot be pushed into the soft bag by the flow of air. Therefore, when the drug mixing procedure is repeated, the space between the second flow channel of the output part and the plug hole will be filled with residual high-concentration liquid medicine due to air squeezing.

[0006] Because the high-concentration liquid medicine remaining in the space between the second flow channel and the jack of the output part has not been diluted, the concentration is too high. Once the nursing staff then uses the existing drug mixing device to perform the infusion procedure, the high-concentration liquid medicine remaining in the space between the second flow channel and the jack of the output part will first enter the patient's body, and the diluted medicine in the soft bag will enter the patient's body later. After the remaining high-concentration liquid medicine enters the patient's body, it will cause adverse reactions in the patient's body. Therefore, patients often react that they feel very uncomfortable in the early stages of the infusion procedure. If this existing drug mixing device is used to infuse drugs to patients who need precise quantitative administration, such as pregnant women or critically ill patients, it often has serious consequences and even life-threatening.

[0007] Some nursing staff noticed the above situation and discharged the high-concentration liquid medicine remaining in the space between the second flow channel and the insertion hole of the output part from the third flow channel of the tube body after step (a) and before step (b) of the infusion procedure. However, this practice directly leads to a reduction in the dosage infused into the patient's body, which is inconsistent with the doctor's order, thereby reducing the treatment effect and causing drug waste.

[0008] Furthermore, in step (c) of the infusion procedure of the existing drug mixing device, because the first flow channel of the connecting part and the second flow channel of the output part remain connected, part of the diluted drug will flow from the second flow channel of the output part to the first flow channel of the connecting part and the insertion needle into the medicine bottle, resulting in a reduction in the dose infused into the patient's body, which is inconsistent with the doctor's order, thereby reducing the treatment effect and causing drug waste.

[0009] Furthermore, since the connection part has no sealing effect, the medicine bottle cannot be removed from the connection part, otherwise the residual high-concentration medicine solution will leak outward through the connection part. Therefore, the existing medicine mixing device can only be used once and cannot be reused.

[0010] In addition, the existing infusion system includes a drug mixing device, an infusion drip set, a distributor, a separator and an indwelling needle. Since the patient with agitation is prone to disorder, the distributor and the separator are easily separated, and the indwelling needle and the artificial blood vessel are easily separated, causing the drug solution and blood to leak out.

[0011] US Patent No. 6,651,956B2 discloses a slit-type wiping valve, US Patent No. 9,415,199B2 discloses a closed connector, and US Patent No. 10,201,693B2 discloses a closed connector. The above three patents can be set in US Patent No. 10,688,295B2. Figure 1 The connecting part of the needle-free control valve of the prior art is shown, and is used to connect a syringe. The syringe can pass the concentrated liquid medicine into the soft bag through the medicine mixing device of the above patent combination. The slit-type wipe valve has a sealing effect, which solves the problem that the connecting part of US10,688,295B2 has no sealing effect. Therefore, the medicine mixing device of the above patent combination can be reused. Unfortunately, the above patent combination cannot solve other problems of US10,688,295B2.

[0012] U.S. Patent No. 11235135B2 discloses a needle-free infusion closed connector for preventing liquid medicine from leaking out, which has a first connecting component and a second connecting component. The first connecting component has a first sleeve and a first elastic valve, the first sleeve forms a first opening, and the first elastic valve tends to seal the first opening. The second connecting component has a second sleeve and a second elastic valve, the second sleeve forms a second opening, and the second elastic valve tends to seal the second opening. The first elastic valve tends to seal the first opening of the first sleeve, and the second elastic valve tends to seal the second opening, so that the residual liquid medicine in the syringe and infusion catheter connecting component, the medicine bottle and the human body end connecting component can be prevented from leaking out, and it can also be bidirectionally sealed to prevent leakage when connecting and removing after adding medicine or infusion. Summary of the invention

[0013] The main purpose of the present invention is to provide a separator that is easy to detach. Even if the patient moves around, the movable closed joint and the needle-free connector will be separated immediately to prevent leakage of medicine and blood. The separator can be disinfected with an alcohol cotton pad and reused without the need for replacement.

[0014] In order to achieve the above-mentioned purpose, the present invention provides an easy-to-detach separator, comprising a valve body, a screw-connected structure, an output end, and a snap-on needle-free connector module. The internal thread of a first end of the screw-connected structure is screwed to the external thread of a first end of the valve body and is defined as an input end of the separator, and the screw-connected structure has an internal conduit. A first end of the output end is disposed at a second end of the valve body. The snap-on needle-free connector module comprises a movable closed connector and a needle-free connector. The movable closed joint includes a body, a first combining portion and a first elastic valve. The body includes a sleeve, a conduit, a positioning portion and a first clamping portion. The conduit is arranged inside the sleeve and has a first channel and a first opening. The positioning portion is located inside the sleeve and is arranged on the outside of the conduit. The first clamping portion is a convex block and is arranged on the sleeve. The first combining portion is arranged on the sleeve. The first elastic valve includes a first circumferential portion and a first sealing portion. The two ends of the first circumferential portion are respectively arranged on the positioning portion and the first combining portion. The first sealing portion is located in the first channel. A first end of the first sealing portion is connected to an inner side surface of the first circumferential portion and has a plurality of through holes. The plurality of through holes are communicated with the first channel. A second end of the first sealing portion closes the first opening. The needle-free connector includes a shell, a second combining portion and a second elastic valve, the shell or the second combining portion has a second clamping portion, the second clamping portion is a convex block and is arranged on an outer side surface of the shell or an outer side surface of the second combining portion, a first end of the shell has a second opening, the second combining portion is arranged at a second end of the shell, has a third opening, and is combined with the threaded structure, the third opening is communicated with the inner catheter, the second elastic valve includes a second circumferential portion and a second sealing portion, the second circumferential portion is arranged inside the shell and the second combining portion and has a second channel, the second channel is communicated with the third opening, the third opening is communicated with the inner catheter, the second sealing portion is arranged inside the shell and has a slit, and the second sealing portion closes the second opening. Wherein, when the movable closed joint is docked with the needle-free connector, the first clamping part is fixed to the second clamping part, and the force with which the first clamping part is fixed to the second clamping part is 1.4 to 8.1 Newton meters. The catheter compresses the second sealing part, and the second sealing part compresses the second circumferential part, so that the second sealing part is away from the second opening, and the catheter passes through the slit of the second sealing part and enters the interior of the second sealing part. The first end of the shell abuts against an inner wall of the sleeve, and the positioning part moves along the catheter in a direction away from the needle-free connector and compresses the first circumferential part, so that the second end of the first sealing part is separated from the first opening, and the first channel, the second channel and the inner catheter are connected.When the movable closed joint is separated from the needle-free connector, the first engaging portion is disengaged from the second engaging portion, and the catheter is disengaged from the second sealing portion, so that the slit of the second sealing portion is tightly closed, and the second sealing portion is reset and closes the second opening by the elastic force of the second circumferential portion, and the first end of the shell is disengaged from the sleeve, and the positioning portion and the first sealing portion are reset by the elastic force of the first circumferential portion, so that the second end of the first sealing portion closes the first opening.

[0015] In order to achieve the above-mentioned purpose, the present invention provides an easy-to-detach separator, comprising a valve body, a screw-connected structure, an output end, and a snap-on needle-free connector module. The internal thread of a first end of the screw-connected structure is screwed to the external thread of a first end of the valve body and is defined as an input end of the separator, and the screw-connected structure has an internal conduit. A first end of the output end is disposed at a second end of the valve body. The snap-on needle-free connector module comprises a movable closed connector and a needle-free connector. The movable closed joint includes a body, a first combining portion and a first elastic valve. The body includes a sleeve, a conduit, a positioning portion and a first clamping portion. The conduit is arranged inside the sleeve and has a first channel and a first opening. The positioning portion is located inside the sleeve and arranged on the outside of the conduit. The first clamping portion is a convex block and is arranged on the sleeve. The first combining portion is arranged on the sleeve. The first elastic valve includes a first circumferential portion and a first sealing portion. One end of the first circumferential portion is arranged on the positioning portion. The first sealing portion is located in the first channel. A first end of the first sealing portion is connected to an inner side surface of the first circumferential portion and has a plurality of through holes. The plurality of through holes are communicated with the first channel. A second end of the first sealing portion closes the first opening. The needle-free connector includes a shell, a second combining portion, a connecting pipe, a third elastic valve and a fourth elastic valve, the shell having a second clamping portion, the second clamping portion being a convex block and being arranged on an outer side surface of the shell or an outer side surface of the second combining portion, a first end of the shell having a second opening, the second combining portion being arranged at a second end of the shell, having a third opening, and being integrally formed with the screw connection structure, the third opening being communicated with the inner conduit, the connecting pipe being arranged in the shell and comprising an upper cylinder, a large diameter portion and a lower cylinder, the upper cylinder being arranged above the large diameter portion, the top end of which is a closed end, and at least one through hole is provided, the at least one through hole passes through a side wall of the upper cylinder and is communicated with the interior of the upper cylinder, the lower cylinder being arranged below the large diameter portion, and the bottom end of which is a The open end, the interior of the upper cylinder, the interior of the large diameter portion and the interior of the lower cylinder are communicated, the third elastic valve is arranged in the shell and has a third circumferential portion and a third sealing portion, the third circumferential portion is arranged around the outer side of the upper cylinder and its bottom end is against the large diameter portion, the third sealing portion is arranged at the top end of the third circumferential portion and has a slit, the fourth elastic valve is arranged in the shell and has a fourth circumferential portion and a fourth sealing portion, the fourth circumferential portion is arranged around the outer side of the lower cylinder and its top end is against the large diameter portion, the fourth sealing portion is arranged at the bottom end of the fourth circumferential portion and against an inner side wall of the second combining portion, a second end of the shell presses the top end of the fourth sealing portion, the fourth sealing portion has a slit, and the slit of the fourth sealing portion is aligned with the interior of the lower cylinder and the third opening.Among them, when the movable closed joint is docked with the needle-free connector, the first clamping part is fixed to the second clamping part, and the force with which the first clamping part is fixed to the second clamping part is 1.4 to 8.1 Newton meters. The upper cylinder opens the slit of the third sealing part, and the upper cylinder pushes and compresses the first sealing part. The upper cylinder passes through the first opening and enters the interior of the conduit. The conduit compresses the third sealing part, and the third sealing part compresses the third circumferential part, so that at least one through hole of the upper cylinder is exposed outside the third sealing part and is located inside the conduit, the third circumferential part pushes the large diameter part, and the large diameter part compresses the fourth circumferential part. The lower cylinder opens the slit of the fourth sealing part and enters the third opening, so that the first channel, the connecting pipe and the inner conduit are connected. When the movable closed joint is separated from the needle-free connector, the first engaging portion is disengaged from the second engaging portion, and the fourth circumferential portion pushes against the large diameter portion by its elastic force, so that the connecting tube and the third elastic valve move, and the lower cylinder returns to the interior of the fourth circumferential portion, so that the slit of the fourth sealing portion is sealed, and the third circumferential portion pushes against the conduit by its elastic force to drive the movable closed joint to move, so that the upper cylinder is disengaged from the conduit and returns to the third circumferential portion, and the conduit is disengaged from the third sealing portion, so that the slit of the third sealing portion is sealed, and the third sealing portion is reset by the elastic force of the third circumferential portion and closes the second opening, and the first end of the shell is disengaged from the sleeve, and the first sealing portion is reset by its elastic force, so that the second end of the first sealing portion closes the first opening.

[0016] The invention has the effect that the force of fixing the first engaging part to the second engaging part is 1.4 to 8.1 Newton meters (1 to 6 pounds per foot), which has the effect of easy separation. Even if the patient moves around, the movable closed joint and the needle-free connector will be separated immediately to prevent leakage of liquid medicine and blood, and can be disinfected with alcohol cotton pads for repeated use without replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the infusion system of the present invention.

[0018] Figure 2 It is a cross-sectional exploded view of the first embodiment of the second drug mixing device of the present invention.

[0019] Figure 3 It is a cross-sectional exploded view of the second embodiment of the second drug mixing device of the present invention.

[0020] Figure 4 It is a cross-sectional exploded view of the separator of the present invention.

[0021] Figure 5A It is a schematic diagram of the first embodiment of the second medicine mixing device of the present invention for mixing medicine and infusing liquid.

[0022] Figure 5B yes Figure 5A Schematic diagram of area A.

[0023] Figure 6 Schematic diagram of the second embodiment of the second drug mixing device of the present invention performing drug mixing and infusion.

[0024] Fig. 7A It is a schematic diagram of the infusion of the separator of the present invention.

[0025] Figure 7B yes Fig. 7A Schematic diagram of area B.

[0026] Figure 8 Schematic diagram of other embodiments of the first closed needle-free connector module of the present invention.

[0027] Fig.9A 4 is a perspective exploded view of the second embodiment of the third closed needle-free connector module of the present invention.

[0028] Fig. 9B 4 is a cross-sectional exploded view of the second embodiment of the third closed needle-free connector module of the present invention.

[0029] Fig. 9C 4 is a cross-sectional view of a second embodiment of a third closed needle-free connector module of the present invention.

[0030] Fig.9D yes Fig. 9C Schematic diagram of region C.

[0031] Fig.9E yes Fig. 9C A three-dimensional cross-sectional view of area C.

[0032] Fig. 10A 4 is a perspective exploded view of a third embodiment of a third closed needle-free connector module of the present invention.

[0033] Fig. 10B 4 is a cross-sectional exploded view of a third embodiment of a third closed needle-free connector module of the present invention.

[0034] Fig. 10C 4 is a cross-sectional view of a third embodiment of a third closed needle-free connector module of the present invention.

[0035] Fig. 10D yes Fig. 10C Schematic diagram of region D.

[0036] Fig.11A It is a perspective view of other uses of syringes and valve bodies.

[0037] Fig. 11B It is a side view of other uses of the syringe and valve body.

[0038] Fig. 12A This is a cross-sectional view of a syringe and a movable closure joint formed integrally.

[0039] Fig. 12B It is a cross-sectional view of a syringe and another movable closed joint formed in one piece.

[0040] Fig.13A 4 is a perspective view of a fourth embodiment of the third enclosed needle-free connector module of the present invention.

[0041] Fig. 13B 4 is a perspective exploded view of a fourth embodiment of the third closed needle-free connector module of the present invention.

[0042] Fig. 13C 4 is a cross-sectional view of a fourth embodiment of the third enclosed needle-free connector module of the present invention.

[0043] Fig.13D It is a cross-sectional view of other uses of the fourth embodiment of the third closed needle-free connector module of the present invention and a syringe providing positive pressure.

[0044] Fig.13E yes Fig.13D Schematic diagram of region E.

[0045] Fig.13F It is a schematic diagram of continuous action of the balanced pressure valve of the fourth embodiment of the third closed needle-free connector module of the present invention being deformed by positive pressure.

[0046] Figure 13G It is a cross-sectional view showing other uses of the fourth embodiment of the third closed needle-free connector module of the present invention and a balanced pressure valve providing a non-return function.

[0047] Fig.13H yes Figure 13G Schematic diagram of area F.

[0048] Fig.13I It is a cross-sectional view of another use of the fourth embodiment of the third closed needle-free connector module of the present invention and a balanced pressure valve that loses its non-return function.

[0049] Fig.13J yes Fig.13I Schematic diagram of region G.

[0050] Fig.14A 4 is a perspective view of a fifth embodiment of the third closed needle-free connector module of the present invention.

[0051] Fig. 14B 4 is a perspective exploded view of a fifth embodiment of the third closed needle-free connector module of the present invention.

[0052] Fig. 14C 4 is a cross-sectional view of a fifth embodiment of the third closed needle-free connector module of the present invention.

[0053] Fig.14D It is a cross-sectional view of another use of the fifth embodiment of the third closed needle-free connector module of the present invention and a syringe providing positive pressure.

[0054] Fig.14E yes Fig.14D Schematic diagram of region H.

[0055] Fig.14F It is a cross-sectional view showing other uses of the fifth embodiment of the third closed needle-free connector module of the present invention and a balanced pressure valve providing a check function.

[0056] Figure 14G yes Fig.14F Schematic diagram of region I.

[0057] Fig.15A 4 is a perspective view of a sixth embodiment of the third closed needle-free connector module of the present invention.

[0058] Fig. 15B 4 is a perspective exploded view of a sixth embodiment of the third closed needle-free connector module of the present invention.

[0059] Fig. 15C 4 is a cross-sectional view of a sixth embodiment of the third closed needle-free connector module of the present invention.

[0060] Fig.16A It is a cross-sectional exploded view of the seventh embodiment of the third closed needle-free connector module of the present invention.

[0061] Fig. 16B 4 is a cross-sectional view of a seventh embodiment of the third closed needle-free connector module of the present invention.

[0062] Description of reference numerals:

[0063] 10: first drug mixing device;

[0064] 11: puncture part;

[0065] 111: U-shaped through hole;

[0066] 112: side hole;

[0067] 113: first partition wall;

[0068] 114: first long hole;

[0069] 115: second long hole;

[0070] 12: connecting part;

[0071] 121: connector combination seat;

[0072] 1211: first flow channel;

[0073] 122: bottle needle cover;

[0074] 1221: insert needle;

[0075] 13: output unit;

[0076] 131: second flow channel;

[0077] 132: jack;

[0078] 14: connector;

[0079] 141: Pipe body;

[0080] 1411: third flow channel;

[0081] 1412: blocking part;

[0082] 15: second partition wall;

[0083] 20, 20A: second drug mixing device;

[0084] 21, 21A, 21A1: first closed needle-free connector module;

[0085] 21B: second closed needle-free connector module;

[0086] 21C, 21D, 21E, 21F, 21G, 21H, 21I: third closed needle-free connector module;

[0087] 22, 22A, 22B, 22C: movable closed joints;

[0088] 221: Ontology;

[0089] 2211, 2211A: sleeve;

[0090] 22111, 22111A: upper cylinder;

[0091] 22112: middle tube;

[0092] 22113, 22113A, 22113B, 22113C: lower cylinder;

[0093] 22114: first through hole;

[0094] 22115: second through hole;

[0095] 22116: groove;

[0096] 2212: catheter;

[0097] 22121: First channel;

[0098] 22122: First opening;

[0099] 2213: positioning unit;

[0100] 2214, 2214A: first engaging portion;

[0101] 22141: Arm;

[0102] 22142: Connecting part;

[0103] 22143: hook;

[0104] 222: first joint;

[0105] 2221: first end;

[0106] 22211: groove;

[0107] 2222: second end;

[0108] 2223: Connecting channel;

[0109] 22231: Large diameter part;

[0110] 22232: Trails Department;

[0111] 223: first elastic valve;

[0112] 2231: first circumferential portion;

[0113] 2232: first sealing part;

[0114] 2233: Perforation;

[0115] 2234: Insert rod;

[0116] 22341:head;

[0117] 23, 23C, 23D, 23E, 23F, 23G: first pin-free connector;

[0118] 23B: third pin-free connector;

[0119] 231, 231A: housing;

[0120] 2311, 2311A: upper shell;

[0121] 23111: second opening;

[0122] 2312,2312A: lower shell;

[0123] 2313: second engaging portion;

[0124] 2314: stable structure;

[0125] 232, 232A, 232B, 232C: second joint portion;

[0126] 2321: first end;

[0127] 2322: second end;

[0128] 23222: The third opening;

[0129] 23223: tooth;

[0130] 23224: chamber;

[0131] 23225: upper chamber;

[0132] 2323: anti-slip rib;

[0133] 2324: block;

[0134] 233: second elastic valve;

[0135] 2331: second circumferential portion;

[0136] 23311: Second channel;

[0137] 2332: second sealing portion;

[0138] 23321: slit;

[0139] 234, 234A: connecting pipe;

[0140] 2341: upper cylinder;

[0141] 2342: Large diameter part;

[0142] 2343: Lower column;

[0143] 235: third elastic valve;

[0144] 2351: third circumferential part;

[0145] 2352: third sealing part;

[0146] 2353: slit;

[0147] 236: fourth elastic valve;

[0148] 2361: Fourth circumference;

[0149] 2362: fourth sealing part;

[0150] 2363: slit;

[0151] 237: fifth elastic valve;

[0152] 2371: Fifth circumference;

[0153] 2372: fifth sealing part;

[0154] 2373: slit;

[0155] 30,30A,30B: infusion set;

[0156] 40: distributor;

[0157] 41: Collection Department;

[0158] 42,43,44: input terminal;

[0159] 45: output terminal;

[0160] 46: Screw-on needle-free connector module;

[0161] 50: separator;

[0162] 51: valve body;

[0163] 511: external thread;

[0164] 52: screw connection structure;

[0165] 521: internal thread;

[0166] 522: ratchet;

[0167] 523: inner catheter;

[0168] 524: bowl-shaped trough;

[0169] 525: lower chamber;

[0170] 53: output terminal;

[0171] 60: indwelling needle;

[0172] 70: chuck;

[0173] 80: puncture head;

[0174] 90: Balance pressure valve;

[0175] 90A: Check valve;

[0176] 91,91A: valve body;

[0177] 911: slit;

[0178] 912:Through hole;

[0179] 913: bending portion;

[0180] 92, 92A: fixed part;

[0181] 93: stopper;

[0182] 100,100A: medicine bottle;

[0183] 110: bottle cap;

[0184] 200: syringe;

[0185] 300,300A,300B: soft bag;

[0186] 400: long tube;

[0187] D1, D2: distance;

[0188] H1,H2,H3,H4: height. DETAILED DESCRIPTION

[0189] The following is a more detailed description of the implementation of the present invention with the help of drawings and component symbols, so that those skilled in the art can implement it according to the instructions after reading this specification.

[0190] like Figure 1 As shown, the present invention provides an infusion system, including a first drug mixing device 10, two second drug mixing devices 20, 20A, three infusion drip sets 30, 30A, 30B, a distributor 40, a separator 50 and an indwelling needle 60.

[0191] The first drug mixing device 10 and the second drug mixing device 20 also include a puncture portion 11, a connection portion 12, an output portion 13 and a plug-in connector 14. Figure 2 The details of the above structure will be described below by taking the second drug mixing device 20 as an example.

[0192] A first end of the puncture portion 11 is a sharp end, and a U-shaped through hole 111 and three side holes 112 are formed on a side wall of the puncture portion 11. The internal space of the puncture portion 11 is divided into a first long hole 114 and three second long holes 115 by a first partition wall 113. The first long hole 114 is connected to the U-shaped through hole 111, and each second long hole 115 is connected to each side hole 112. In addition, a distance D1 from the top of the U-shaped through hole 111 to the sharp end of the puncture portion 11 is smaller than a distance D2 from the top of the side hole 112 to the sharp end of the puncture portion 11. In other words, the top of the U-shaped through hole 111 is closer to the sharp end of the puncture portion 11 and forms a U-shaped hole, and the top of the side hole 112 is farther from the sharp end of the puncture portion 11.

[0193] The connecting portion 12 includes a connector assembly 121 . The connector assembly 121 is integrally formed at one side of a second end of the puncture portion 11 and defines a first flow channel 1211 , which communicates with the U-shaped through hole 111 .

[0194] The output portion 13 is disposed at the second end of the puncture portion 11 and defines a second flow channel 131 and an insertion hole 132. The second flow channel 131 is connected between the three second long holes 115 and the insertion hole 132. In this embodiment, the outer surface of the output portion 13 is a smooth curved surface.

[0195] A second partition wall 15 is provided between the connecting portion 12 and the output portion 13 to separate the first flow channel 1211 from the second flow channel 131 , and the first partition wall 113 is connected to the second partition wall 15 .

[0196] The plug connector 14 has a tube body 141. The tube body 141 defines a third flow channel 1411. A first end of the tube body 141 is inserted into the insertion hole 132, so that the second flow channel 131 communicates with the third flow channel 1411. A blocking portion 1412 is disposed inside the third flow channel 1411 to close the third flow channel 1411.

[0197] like Figure 1 As shown, the connecting portion 12 of the first drug mixing device 10 further includes a bottle needle cover 122 . The bottle needle cover 122 is integrally formed on the connector coupling seat 121 , has an insertion needle, and is used to be coupled to a drug bottle 100 .

[0198] like Figure 2 and Figure 5A As shown, the second drug mixing device 20 differs from the first drug mixing device 10 in that the second drug mixing device 20 further includes a first closed needle-free connector module 21, which replaces the bottle needle cover 122. In other words, the first closed needle-free connector module 21 includes a movable closed connector 22 and a first needle-free connector 23.

[0199] The movable closed joint 22 includes a body 221, a first joint portion 222 and a first elastic valve 223. The body 221 includes a sleeve 2211, a guide tube 2212, a positioning portion 2213 and a first engaging portion 2214. The sleeve 2211 includes an upper cylinder portion 22111, a middle cylinder portion 22112 and a lower cylinder portion 22113. The middle cylinder portion 22112 is disposed between a first end of the upper cylinder portion 22111 and a first end of the lower cylinder portion 22113. A first through hole 22114 is provided between a side wall of the upper cylinder portion 22111 and a side wall of the middle cylinder portion 22112. A second through hole 22115 is provided between a side wall of the middle cylinder portion 22112 and a side wall of the lower cylinder portion 22113. The conduit 2212 extends from the interior of the upper tube 22111 to the interior of the middle tube 22112 and has a first passage 22121 and a first opening 22122. The positioning portion 2213 is located inside the upper tube 22111 and is disposed on the outside of the conduit 2212. The first engaging portion 2214 includes an arm 22141, a connecting portion 22142 and a hook 22143. The connecting portion 22142 is disposed on the upper tube 22111, passes through the first through hole 22114 from the interior of the upper tube 22111, and is connected to the arm 22141. The hook 22143 is disposed at one end of the arm 22141 and is located in the second through hole 22115. The first coupling portion 222 includes a first end portion 2221, a second end portion 2222 and a connecting passage 2223. The first end portion 2221 is disposed at a second end of the upper tube portion 22111 and has a groove 22211. A groove wall of the groove 22211 is in an arc shape. The second end portion 2222 is a bottle needle cover having an insertion needle 1221 and is used to be coupled to a medicine bottle 100A (see Figure 1 and Figure 5A ), the connecting channel 2223 passes through the first end 2221 and the second end 2222 and communicates with the groove 22211. The first elastic valve 223 includes a first circumferential portion 2231 and a first sealing portion 2232. The two ends of the first circumferential portion 2231 are respectively arranged at the positioning portion 2213 and the first end 2221. The first sealing portion 2232 is located in the first channel 22121. A first end of the first sealing portion 2232 is connected to an inner side surface of the first circumferential portion 2231 and is provided with a plurality of through holes 2233. The plurality of through holes 2233 communicate with the first channel 22121. The plurality of through holes 2233 communicate with the groove 22211. A second end of the first sealing portion 2232 closes the first opening 22122.

[0200] The first needle-free connector 23 includes a housing 231, a second coupling portion 232 and a second elastic valve 233. The housing 231 includes an upper housing 2311, a lower housing 2312, a second engaging portion 2313 and a stabilizing structure 2314. A first end of the upper housing 2311 has a second opening 23111. An outer diameter of the upper housing 2311 is smaller than an outer diameter of the lower housing 2312. The second engaging portion 2313 is a protrusion and is disposed on an outer side surface of a first end of the lower housing 2312. The stabilizing structure 2314 is a protrusion and is disposed on an outer side surface of a second end of the lower housing 2312. The second coupling portion 232 includes a first end 2321 and a second end 2322. The first end 2321 is disposed on a second end of the lower housing 2312. The second end 2322 has a third opening 23222 and is used to be coupled to the connector coupling seat 121. The second elastic valve 233 includes a second circumferential portion 2331 and a second sealing portion 2332. The second circumferential portion 2331 is arranged inside the lower shell 2312 and the second combining portion 232 and has a second channel 23311. The second channel 23311 is communicated with the third opening 23222. The second sealing portion 2332 is arranged inside the upper shell 2311 and has a slit 23321. The second sealing portion 2332 closes the second opening 23111.

[0201] like Figure 5A As shown, please refer to Figure 2 When the movable closed joint 22 is docked with the first needle-free connector 23, the second engaging portion 2313 is located at the second through hole 22115, and the hook portion 22143 is fixed to a bottom end of the second engaging portion 2313. The conduit 2212 compresses the second sealing portion 2332, and the second sealing portion 2332 compresses the second circumferential portion 2331, so that the second sealing portion 2332 is away from the second opening 23111, and the conduit 2212 passes through the slit 23321 and enters the interior of the second sealing portion 2332. The first end of the upper shell 2311 abuts against an inner wall of the middle cylinder 22112. The positioning portion 2213 moves along the conduit 2212 in a direction away from the first needle-free connector 23 and compresses the first circumferential portion 2231, so that the second end of the first sealing portion 2232 is separated from the first opening 22122, and the first channel 22121 is connected to the second channel 23311. An inner side surface of the lower tube portion 22113 abuts against an outer side surface of the stabilizing structure 2314 , so that the lower shell 2312 will not shake in the lower tube portion 22113 .

[0202] like Figure 2 As shown, please refer to Figure 5AWhen the movable closed joint 22 is separated from the first needle-free connector 23, the arm portion 22141 is pressed so that the hook portion 22143 is disengaged from the bottom end of the second engaging portion 2313. The conduit 2212 is disengaged from the second sealing portion 2332 so that the slit 23321 is sealed. The second sealing portion 2332 is reset by the elastic force of the second circumferential portion 2331 and closes the second opening 23111. The first end of the upper shell 2311 is separated from the middle cylinder portion 22112. The positioning portion 2213 and the first sealing portion 2232 are reset by the elastic force of the first circumferential portion 2231 so that the second end of the first sealing portion 2232 closes the first opening 22122.

[0203] Preferably, the force of the hook portion 22143 being fixed to the second engaging portion 2313 is 96.14 Newton meters. The conditions for achieving the above force are: Figure 5B As shown, the height H1 of the hook portion 22143 protruding from the arm portion 22141 is between 1.53 and 1.62 mm. Therefore, if the user wants to remove the movable closed joint 22 by pulling it out, the pulling force must be greater than 96.14 Newton meters, and the hook portion 22143 can be separated from the second engaging portion 2313; if the user wants to remove the movable closed joint 22 in a more labor-saving manner, the user can choose to press the arm portion 22141, and the hook portion 22143 can be separated from the second engaging portion 2313. The above technical features make it difficult for the hook 22143 to be removed from the second engaging portion 2313, and the hook 22143 can only be separated from the second engaging portion 2313 by pressing the arm 22141, thereby achieving the following effects: first, it can effectively prevent leakage caused by medical actions such as restlessness or turning over during use; second, it can effectively prevent separation due to certain excessive movements during use, and will not cause liquid leakage or blood backflow; third, after the movable closed joint 22 is separated from the first needle-free connector 23, it can be disinfected with alcohol before assembly to reduce the time and consumables cost of medical staff; fourth, it is suitable for use when normal patients who can be independent are infused; fifth, it is suitable for use when mentally unstable or elderly people are receiving medical assistance. It is worth mentioning that without the above technical features, the movable closed joint 22 will be easy to fall off, which will extend the cost of additional medical equipment and medical staff, and even increase the risk of bacterial infection for patients under treatment, and the medical effect cannot be achieved predictably, which will cause the risk of doubts about the patient's cure.

[0204] In some embodiments, the force with which the hook 22143 is fixed to the second engaging portion is less than 96.14 Newton meters. The condition for achieving the above force is that the height H1 of the hook 22143 protruding from the arm 22141 is less than 1.53 mm. Therefore, if the user wants to remove the movable closed connector 22 by pulling it out, the hook 22143 can be disengaged from the second engaging portion 2313 as long as the pulling out force is less than 96.14 Newton meters; if the user wants to remove the movable closed connector 22 in a more labor-saving manner, the user can choose to press the arm 22141, and the hook 22143 can be disengaged from the second engaging portion 2313. The above technical features give the first closed needle-free connector module 21 the effect of being clampable and easy to fall off.

[0205] like Figure 3 and Figure 6 As shown, the difference between the first closed needle-free connector module 21A and the first closed needle-free connector module 21 is that: first, the second end 2222 is a Luer connector and is used to be combined with a syringe 200 (see Figure 1 and Figure 6 ); secondly, the connecting channel 2223 includes a large diameter portion 22231 and a small diameter portion 22232; thirdly, the first elastic valve 223 further includes a plug rod 2234, a first end of the plug rod 2234 is disposed at the first end of the first sealing portion 2232, and a second end of the plug rod 2234 has a head 22341, a diameter of the head 22341 is equal to a diameter of the small diameter portion 22232 and smaller than a diameter of the large diameter portion 22231. Figure 6 As shown, when the movable closed joint 22 is docked with the first needle-free connector 23, the head 22341 is located in the large diameter portion 22231 and forms a gap with a hole wall of the large diameter portion 22231, so that the connecting channel 2223 is connected with the groove 22211. Figure 3 As shown, when the movable closed joint 22 is separated from the first needle-free connector 23, the head 22341 is located in the small diameter portion 22232, but still maintains a distance from an inner side surface of the small diameter portion 22232 to maintain the smooth flow of the connecting channel 2223. In addition, the remaining technical features of the second drug mixing device 20A are exactly the same as those of the second drug mixing device 20.

[0206] like Figure 1 and Figure 5A As shown, the puncture portion 11 of the second drug mixing device 20A passes through the blocking portion 1412 of the second drug mixing device 20, so that the second drug mixing device 20 and the second drug mixing device 20A are connected in series.

[0207] In some embodiments, multiple second drug mixing devices 20, 20A can be connected in series with each other in the above-mentioned serial connection manner, or multiple second drug mixing devices 20 are connected in series with each other in the above-mentioned serial connection manner, or multiple second drug mixing devices 20A are connected in series with each other in the above-mentioned serial connection manner, which are all possible implementations. In some embodiments, the infusion system can also only include the second drug mixing device 20 or the second drug mixing device 20A.

[0208] like Figure 1 As shown, a first end of the infusion drip set 30 passes through the blocking portion 1412 of the first drug mixing device 10, so that the infusion drip set 30 communicates with the second flow channel 131 through the third flow channel 1411 of the first drug mixing device 10. Figure 1 and Figure 6 As shown, a first end of the infusion drip sleeve 30A passes through the blocking portion 1412 of the second drug mixing device 20A, so that the infusion drip sleeve 30A communicates with the second flow channel 131 through the third flow channel 1411 of the second drug mixing device 20A.

[0209] like Figure 1 As shown, the distributor 40 includes a collecting portion 41, three input ends 42, 43, 44, an output end 45, a second closed needle-free connector module 21B and a threaded needle-free connector module 46. The three input ends 42, 43, 44 are connected to a first end of the collecting portion 41. The output end 45 is connected to a second end of the collecting portion 41. The difference between the second closed needle-free connector module 21B and the first closed needle-free connector module 21A is that: first, the first elastic valve 223 does not include the insertion rod 2234; second, the second end 2222 is connected to a second end of the infusion liquid drip set 30; third, the second end 2322 is combined with the input end 42. The threaded needle-free connector module 46 includes a threaded portion and a second needle-free connector, the threaded portion is disposed at a second end of the infusion drip set 30A, the second needle-free connector has the same structure as the first needle-free connector 23, the upper shell 2311 of the second needle-free connector is threadedly connected to the threaded portion, and the second end 2322 of the second needle-free connector is disposed at the input end 43. The input end 44 is disposed at a second end of the infusion drip set 30B. The second closed needle-free connector module 21B is completely the same as the first closed needle-free connector module 21A.

[0210] like Figure 4 , Fig. 7A and Figure 7BAs shown, the separator 50 includes a valve body 51, a threaded structure 52, an output end 53, a third needle-free connector 23B and a third closed needle-free connector module 21C. The valve body 51 is a three-way valve, the internal thread 521 of the threaded structure 52 is threadedly connected to the external thread 511 of a first end of the valve body 51, the threaded structure 52 has an internal conduit 523, a first end of the output end 53 is arranged at a second end of the valve body 51, and the second end 2322 is arranged at a third end of the valve body 51. The third closed needle-free connector module 21C differs from the first closed needle-free connector module 21A in that: first, the middle cylinder 22112 is arranged on the inner side of the first end of the upper cylinder 22111, and the lower cylinder 22113 is arranged on the outer side of the first end of the upper cylinder 22111, so that the middle cylinder 22112 extends inside the lower cylinder 22113; second, the conduit 2212 extends from the inside of the upper cylinder 22111 through the inside of the middle cylinder 22112 to the lower cylinder 22113. 22113; thirdly, the first engaging portion 2214 is a convex block, which is arranged on an inner side surface of the lower cylinder 22113 and is located below the middle cylinder 22112; fourthly, the second end portion 2322 is arranged on the screw connection structure 52, the outer side surface of a first end of the screw connection structure 52 has a plurality of ratchets 522, a second end of the screw connection structure 52 has an internal thread 521, and the bottom end of the second end portion 2322 is a ratchet wheel and its inner side surface has a plurality of teeth 23223. The structure of the third needle-free connector 23B is completely the same as that of the first needle-free connector 23; fifthly, the third opening 23222 is communicated with the inner conduit 523. As shown in FIG. 7 , when the movable closed joint 22 is docked with the first needle-free connector 23, the first engaging portion 2214 is fixed to a bottom end of the second engaging portion 2313, and the force with which the first engaging portion 2214 is fixed to the second engaging portion 2313 is 1.4 to 8.1 Newton meters (1 to 6 pounds per foot), and the first channel 22121, the second channel 23311, and the inner conduit 523 are connected. Figure 4 As shown, when the movable closed connector 22 is separated from the first needle-free connector 23, the first engaging portion 2214 is separated from a bottom end of the second engaging portion 2313. In addition, the remaining technical features of the third closed needle-free connector module 21C are exactly the same as those of the first closed needle-free connector module 21A.

[0211] like Figure 1 As shown, the indwelling needle 60 is disposed at a second end of the output end 53 .

[0212] The following will describe how the infusion system performs the drug mixing procedure to uniformly mix the high-concentration drug solution in two medicine bottles 100, 100A and a syringe 200 and the dilution solution in two soft bags 300, 300A.

[0213] Step (1), taking out the two medicine bottles 100, 100A containing a certain ingredient according to the doctor's order, wherein the two medicine bottles 100, 100A contain a powder of a certain ingredient; taking out the two soft bags 300, 300A containing a dilution solution according to the doctor's order, wherein the dilution solution can be physiological saline or glucose solution; Figure 1 As shown, the medicine bottle 100 is sleeved on the bottle needle cover 122 of the first medicine mixing device 10, and the insertion needle 1221 of the first medicine mixing device 10 pierces a bottle cover 110 of the medicine bottle 100; Figure 5A As shown, the medicine bottle 100A is sleeved on the second end 2222 of the first closed needle-free connector module 21, and the insertion needle 1221 of the first closed needle-free connector module 21 pierces a bottle cap 110 of the medicine bottle 100A; and as shown Figure 1 and Figure 5A As shown, a first end of the puncture portion 11 punctures a thin film of an infusion tube of the two soft bags 300 and 300A, and the infusion drip sleeve 30B directly punctures a thin film of an infusion tube of the soft bag 300B.

[0214] Step (1-1), the two soft bags 300, 300A are on top, and the infusion system is on the bottom; the soft bag 300 is squeezed, and the dilution solution in the soft bag 300 passes through the U-shaped through hole 111, the first long hole 114, the first flow channel 1211 and the insertion needle 1221 of the first drug mixing device 10, and then enters the interior of the medicine bottle 10; the soft bag 300A is on top, and the infusion system is on the bottom, and the soft bag 300A is squeezed, and the dilution solution in the soft bag 300A passes through the U-shaped through hole 111 of the second drug mixing device 20. After passing through the through hole 111, the first long hole 114, the first flow channel 1211, the third opening 23222, the second channel 23311, the first channel 22121, the multiple through holes 2233, the groove 22211, the connecting channel 2223 and the insertion needle 1221, enter the interior of the medicine bottle 100A; and shake the two medicine bottles 100, 100A to slightly mix the powder and the dilution solution inside the two medicine bottles 100, 100A to obtain a high concentration of liquid medicine.

[0215] Step (2), the two soft bags 300, 300A are at the bottom and the infusion system is at the top; the soft bag 300 is squeezed, and the air in the soft bag 300 passes through the U-shaped through hole 111 and the first long hole 114 of the first drug mixing device 10, the first flow channel 1211 and the insertion needle 1221 in sequence, and then enters the interior of the medicine bottle 100; and the soft bag 300A is squeezed, and the air in the soft bag 300A passes through the U-shaped through hole 111, the first long hole 114, the first flow channel 1211, the third opening 23222, the second channel 23311, the first channel 22121, the multiple through holes 2233, the groove 22211, the connecting channel 2223 and the insertion needle 1221 of the second drug mixing device 20 in sequence, and then enters the interior of the medicine bottle 100A.

[0216] Step (3), loosen the soft bag 300, and the high-concentration liquid medicine in the medicine bottle 100 passes through the insertion needle 1221, the first flow channel 1211, the first long hole 114 and the U-shaped through hole 111 of the first drug mixing device 10 in sequence, and then enters the interior of the soft bag 300; Figure 5A As shown, the soft bag 300A is released, and the high-concentration liquid medicine in the medicine bottle 100A passes through the insertion needle 1221, the connecting channel 2223, the groove 22211, the plurality of through holes 2233, the first channel 22121, the second channel 23311, the third opening 23222, the first flow channel 1211, the first long hole 114 and the U-shaped through hole 111 of the second medicine mixing device 20 in sequence, and then enters the interior of the soft bag 300A; Figure 6 As shown, the high-concentration drug solution in the syringe 200 passes through the connecting channel 2223, the groove 22211, the multiple perforations 2233, the first channel 22121, the second channel 23311, the third opening 23222, the first flow channel 1211, the first long hole 114 and the U-shaped through hole 111, the third flow channel 1411 of the second drug mixing device 20, the second flow channel 131, the three second long holes 115 and the three side holes 112, and then enters the interior of the soft bag 300A.

[0217] By repeating steps (2) and (3), all the high-concentration liquid medicine in the two medicine bottles 100, 100A and the syringe 200 can enter the two soft bags 300, 300A, and the high-concentration liquid medicine and the dilution solution in the two soft bags 300, 300A can be fully mixed to obtain diluted medicine.

[0218] It is worth mentioning that during the drug mixing procedure, because the distance D1 from the U-shaped through hole 111 to the sharp end of the puncture part 11 is smaller than the distance D2 from the side hole 112 to the sharp end of the puncture part 11 (i.e., the distance between the U-shaped through hole 111 and the sharp end of the puncture part 11 is closer, and the distance between the side hole 112 and the sharp end of the puncture part 11 is farther), and at the same time, the larger and longer the diameter of the puncture part 11 is, the smaller the gap in the infusion tube of the soft bag 300, 300A through which the puncture part 11 is inserted is, and the flow space becomes smaller, thereby generating tension to block the drug solution, thereby preventing high-concentration drug solution from entering the three side holes 112.

[0219] The following will describe how the infusion system performs an infusion procedure to infuse the diluted drug into the patient's body.

[0220] Step (a), such as Figure 1As shown, the two soft bags 300, 300A, 300B are on the top, and the infusion system is on the bottom; the diluted medicine in the soft bag 300 passes through the three side holes 112 and the three second long holes 115 of the first medicine mixing device 10, the second flow channel 131, the third flow channel 1411, the infusion liquid drip set 30, the connecting channel 2223 of the first closed needle-free connector module 21A, the groove 22211, the multiple through holes 2233, the first channel 22121, the second channel 23311, the third opening 23222 and the input end 42 in sequence, and then enters the interior of the collecting part 41; Figure 1 , Figure 5A and Figure 6 As shown, the diluted medicine in the soft bag 300A sequentially passes through the three side holes 112 of the second medicine mixing device 20, the three second long holes 115, the second flow channel 131, the third flow channel 1411, the three side holes 112 of the second medicine mixing device 20A, the three second long holes 115, the second flow channel 131, the third flow channel 1411, the infusion drip set 30A, the threaded portion 461 of the threaded needle-free connector module 46 and the slit 23321 of the needle-free connector, the second channel 23311, the third opening 23222 and the input end 43, and then enters the interior of the collecting portion 41; and as shown in FIG. Figure 1 As shown, other drugs in the soft bag 300B sequentially pass through the infusion drip set 30B and the input end 44 and then enter the interior of the collecting portion 41 .

[0221] Step (b), such as Figure 1 and Fig. 7A As shown, after the three drugs are mixed inside the collecting portion 41, they pass through the output end 45 and enter the third closed needle-free connector module 21C.

[0222] Step (c), such as Figure 1 and Fig. 7A As shown, the mixed drug passes through the connecting channel 2223, the groove 22211, the multiple perforations 2233, the first channel 22121, the second channel 23311, the third opening 23222, the threaded structure 52 of the separator 50, the valve body 51, the output end 53 and the indwelling needle 60 of the third closed needle-free connector module 21C in sequence, and then enters the patient's body.

[0223] Thus, because the U-shaped through hole 111 and the three side holes 112 are separated by the first partition wall 113, and the first flow channel 1211 and the second flow channel 131 are separated by the second partition wall 15, in step (3), the high-concentration drug solution in the drug bottle 100 will only pass through the insertion needle 1221 of the first drug mixing device 10, the first flow channel 1211, the first long hole 114 of the puncture portion 11, and the U-shaped through hole 111 in sequence, and will not pass through the second flow channel 131 of the first drug mixing device 10, the three second long holes 115, and the second long holes 116 in sequence. The high-concentration liquid medicine in the medicine bottle 100A will only sequentially pass through the insertion needle 1221, the connecting channel 2223, the groove 22211, the plurality of through holes 2233, the first channel 22121, the second channel 23311, the third opening 23222, the first flow channel 1211, the first long hole 114 and the U-shaped through hole 111 of the second medicine mixing device 20, and will not sequentially pass through the second flow channel 131, the three second long holes 115 and the three side holes 112 of the second medicine mixing device 20. Therefore, when the high-concentration liquid medicine in the two medicine bottles 100 and 100A passes through the U-shaped through holes 111 of the first medicine mixing device 10 and the second medicine mixing device 20, no high-concentration liquid medicine will adhere to the inner side walls of the three side holes 112. When step (2) is performed again, since there is no high-concentration liquid medicine attached to the inner walls of the three side holes 112, even if the air in the two soft bags 300 and 300A passes through the three side holes 112, there will not be any high-concentration liquid medicine remaining in the space between the second flow channel 131 and the plug hole 132.

[0224] Because there is no high-concentration drug liquid remaining in the space between the second flow channel 131 and the insertion hole 132, during the infusion procedure, only diluted drugs can enter the patient's body through the three side holes 112 and the three second long holes 115, the second flow channel 131, the third flow channel 1411, the infusion liquid drip sleeve 30, 30A, the distributor 40, the separator 50, and the indwelling needle 60 in sequence, and the problem of residual high-concentration drug liquid entering the patient's body will not occur at all, and the patient will not feel any discomfort. It is very safe and reliable.

[0225] Furthermore, because there is no high-concentration drug liquid remaining in the space between the second flow channel 131 and the insertion hole 132, the nursing staff does not need to discharge any residual high-concentration drug liquid, so that the drug dosage infused into the patient's body is not reduced, which is consistent with the doctor's order, thereby maintaining the treatment effect and preventing drug waste.

[0226] In addition, the first long hole 114 only allows the high-concentration drug solution in the medicine bottle 100, 100A to pass through and enter the soft bag 300, 300A, and the three second long holes 115 only allow the diluted drug in the soft bag 300, 300A to pass through and enter the patient's body, which can prevent the diluted drug from flowing back into the medicine bottle 100, 100A, so that the dose infused into the patient's body is not reduced, which is consistent with the doctor's order, thereby maintaining the treatment effect and not causing drug waste.

[0227] In addition, regarding the first closed needle-free connector module 21, 21A, when the movable closed connector 22 is separated from the first needle-free connector 23, the movable closed connector 22 and the first needle-free connector 23 both have a closed effect, which can prevent the drug solution from leaking. Therefore, the medicine bottle 100A and the syringe 200 can be removed from the movable closed connector 22, so that the second drug mixing device 20, 20A can be reused. If the medical staff wants to mix drugs multiple times, they can use the same second drug mixing device 20, 20A to install multiple bottles of medicine bottles 100A or multiple syringes 200 in batches to mix drugs multiple times, without having to replace the second drug mixing device 20, 20A, saving costs. Of course, the medical staff can also connect multiple second drug mixing devices 20, 20A in series, install multiple bottles of medicine bottles 100A or multiple syringes 200 at a time, and complete the above-mentioned multiple drug mixing procedures at one time, saving time. It should be noted that each time before installing the medicine bottle 100A or the syringe 200, the movable closing joint 22 and the first needle-free connector 23 must be sterilized.

[0228] In addition, regarding the second closed needle-free connector module 21B, when the movable closed connector 22 is separated from the first needle-free connector 23, both the movable closed connector 22 and the first needle-free connector 23 have a sealing effect, which can prevent leakage of the drug solution.

[0229] In addition, regarding the third closed needle-free connector module 21C, the force of the first engaging portion 2214 being fixed to the second engaging portion 2313 is 1.4 to 8.1 Newton meters (1 to 6 pounds per foot), which has the effect of easy separation. Even if the patient moves around, the movable closed connector 22 and the first needle-free connector 23 will be separated immediately to prevent leakage of liquid medicine and blood, and can be disinfected with alcohol cotton pads for repeated use without replacement. When the height H2, H3, and H4 of the first engaging portion 2214 protruding from the lower barrel 22113 is 0.05 mm, the force of the first engaging portion 2214 being fixed to the second engaging portion 2313 is 2.7 Newton meters (2 pounds per foot). When the height H2, H3, and H4 of the first engaging portion 2214 protruding from the lower barrel 22113 is 0.07 mm, the force of the first engaging portion 2214 being fixed to the second engaging portion 2313 is 4.1 Newton meters. When the height H2, H3, H4 of the first engaging portion 2214 protruding from the lower tube 22113 is 0.1 mm, the force of fixing the first engaging portion 2214 to the second engaging portion 2313 is 5.4 Nm (4 lbs per foot). When the height H2, H3, H4 of the first engaging portion 2214 protruding from the lower tube 22113 is 0.14 mm, the force of fixing the first engaging portion 2214 to the second engaging portion 2313 is 8.1 Nm (6 lbs per foot).

[0230] Importantly, since the groove wall of the groove 22211 is in an arc shape, the drug solution can flow along the arc-shaped groove wall of the groove 2221 to prevent the generation of eddy currents, thereby increasing the flow rate of the drug solution.

[0231] It is worth mentioning that, because a diameter of the groove 22211 is greater than a diameter of the first sealing portion 2232 , even if the first circumferential portion 2231 is compressed and deformed and the first sealing portion 2232 is close to the groove 22211 , the groove 22211 still remains unobstructed with the plurality of through holes 2233 and will not be affected.

[0232] Moreover, the upper shell 2311 of the third needle-free connector 23B is a Luer connector and is used to be combined with a syringe 200. Thus, medical personnel can take out a blood sample or add a non-toxic general medicine from the second end of the valve body 51 through the third needle-free connector 23B of the separator 50.

[0233] In some embodiments, the valve body 51 may also be a female Luer connector.

[0234] When the first needle-free connector 23 rotates along a first direction by a first rotational force, the first needle-free connector 23 sequentially transmits the first rotational force to the screw-connected structure 52 through the multiple teeth 23223 and the multiple ratchet claws 522, and the screw-connected structure 52 is pushed by the first rotational force to rotate along the first direction, so that the screw-connected structure 52 is fixed to the first end of the valve body 51. After the screw-connected structure 52 is fixed to the first end of the valve body 51, when the first needle-free connector 23 rotates along a second direction opposite to the first direction by a second rotational force, the first needle-free connector 23 squeezes the multiple ratchet claws 522 with the multiple teeth 23223, so that the multiple ratchet claws 522 are bent and deformed to be separated from the multiple teeth 23223, and the first needle-free connector 23 idles relative to the screw-connected structure 52 along the second direction. At this time, the screw-connected structure 52 is still fixed to the first end of the valve body 51, and the first needle-free connector 23 has no way to drive the screw-connected structure 52 to rotate in the second direction.

[0235] After the screw connection structure 52 is fixed to the first end of the valve body 51, when the first needle-free connector 23 is rotated along the first direction by a third rotational force, the first needle-free connector 23 transmits the third rotational force to the plurality of ratchet claws 522 through the plurality of teeth 23223. The third rotational force is greater than the force that the plurality of ratchet claws 522 can withstand, and the plurality of ratchet claws 522 are broken, so that the screw connection structure 52 can rotate arbitrarily along the first direction and the second direction relative to the first needle-free connector 23, so that the liquid medicine in the output end 53 can keep flowing smoothly.

[0236] like Figure 8 As shown, the difference between the first closed needle-free connector module 21A1 and the first closed needle-free connector module 21A is that the length of the lower barrel 22113 is longer.

[0237] like Fig.9A and Fig. 9BAs shown, the structural differences between the third closed needle-free connector module 21D and the third closed needle-free connector module 21C are as follows: first, the sleeve 2211A of the movable closed connector 22A only includes an upper cylinder portion 22111A and a lower cylinder portion 22113A; second, the second coupling portion 232A and the screw connection structure 52 are integrally formed; third, the first needle-free connector 23C includes a connecting pipe 234, which is disposed in the housing and includes an upper cylinder 2341, a large diameter portion 2342 and a lower cylinder 2343, and the upper cylinder 23 The first pin-free connector 23C includes a third elastic valve 235 disposed in the housing 231A. The third elastic valve 235 is disposed in the housing 231A. The first pin-free connector 23C includes a third elastic valve 235 disposed in the housing 231A. The first pin-free connector 23C includes a third elastic valve 235 disposed in the housing 231A. The first pin-free connector 23C includes a third elastic valve 235 disposed in the housing 231A. The first pin-free connector 23C includes a third elastic valve 235 disposed in the housing 231A. The first pin-free connector 2341 includes a third elastic valve 235 disposed in the housing 231A. The first pin-free connector 2342 includes a third elastic valve 235 disposed in the housing 231A. The first pin-free connector 2342 includes a third elastic valve 235 disposed in the housing 231A. The first needle-free connector 23C includes a third circumferential portion 2351 and a third sealing portion 2352. The third circumferential portion 2351 is disposed around the outer side of the upper cylinder 2341 and its bottom end is against the large diameter portion 2342. The third sealing portion 2352 is disposed at the top of the third circumferential portion 2351 and has a slit 2353. Fifth, the first needle-free connector 23C includes a fourth elastic valve 236. The fourth elastic valve 236 is disposed in the housing 231A and has a fourth circumferential portion 2361 and a fourth sealing portion 2362. The fourth circumferential portion 236 1 is arranged around the outer side of the lower column 2343 and its top end is against the large diameter portion 2342, the fourth sealing portion 2362 is arranged at the bottom end of the fourth circumferential portion 2361 and is against an inner side wall of the second combining portion 232A, the lower shell 2312A presses the top end of the fourth sealing portion 2362, and the fourth sealing portion 2362 is provided with a slit 2363, and the slit 2363 of the fourth sealing portion 2362 is aligned with the interior of the lower column 2343 and the third opening 23222; sixthly, the lower cylinder portion 22113A is provided with two grooves 22116.

[0238] like Fig. 9C , Fig.9D and Fig.9EAs shown, the third closed needle-free connector module 21D and the third closed needle-free connector module 21C differ in that: first, the upper cylinder 2341 opens the slit 2353 of the third sealing portion 2352, the upper cylinder 2341 pushes against and compresses the first sealing portion 2232, the upper cylinder 2341 passes through the first opening 22122 and enters the interior of the conduit 2212, the conduit 2212 compresses the third sealing portion 2352, and the third sealing portion 2352 compresses the third ring The peripheral portion 2351 makes the perforation of the upper column 2341 exposed outside the third sealing portion 2352 and located inside the conduit 2212; secondly, the third circumferential portion 2351 pushes against the large diameter portion 2342, the large diameter portion 2342 compresses the fourth circumferential portion 2361, and the lower column 2343 opens the slit 2363 of the fourth sealing portion 2362 and enters the third opening 23222, so that the first channel 22121, the connecting tube 234 and the inner conduit 523 are connected.

[0239] like Fig.9A and Fig. 9B As shown, the difference between the separation methods of the third closed needle-free connector module 21D and the third closed needle-free connector module 21C is that: first, the fourth circumferential portion 2361 pushes against the large diameter portion 2342 by its elastic force, so that the connecting pipe 234 and the third elastic valve 235 move, and the lower cylinder 2343 returns to the inside of the fourth circumferential portion 2361, so that the slit 2363 of the fourth sealing portion 2362 is tightly closed; second, the third circumferential portion 2351 pushes against the conduit 2212 by its elastic force to drive the movable closed connector 22A to move, so that the upper The column 2341 detaches from the conduit 2212 and returns to the third circumferential portion 2351; thirdly, the conduit 2212 detaches from the third sealing portion 2352, so that the slit 2353 of the third sealing portion 2352 is tightly closed, and the third sealing portion 2352 is reset by the elastic force of the third circumferential portion 2351 and closes the second opening 23111; fourthly, the upper shell 2311A detaches from the lower cylinder 22113A, and the first sealing portion 2232 is reset by its elastic force, so that the second end of the first sealing portion 2232 closes the first opening 22122.

[0240] like Fig. 10A , Fig. 10B , Fig. 10C and Fig. 10D As shown, the structural differences between the third closed needle-free connector module 21E and the third closed needle-free connector module 21D are: first, the first locking portion 2214A is disconnected to form a plurality of protrusions with shorter arc lengths; second, the lower barrel portion 22113B of the movable closed connector 22B has no groove.

[0241] In some embodiments, there may be only one first engaging portion 2214A.

[0242] In some embodiments, Fig.11A and Fig. 11B As shown, two movable closed joints 22 of the first closed needle-free connector module 21A are respectively arranged at one end of the syringe 200 and the first end and the second end of the valve body 51, the first needle-free connector 23 of the first closed needle-free connector module 21A is arranged at the third end of the valve body 51, a clamp 70 is arranged at one end of one of the first needle-free connectors 23, and a puncture head 80 is arranged at one end of the other first needle-free connector 23. These embodiments are suitable for an automated drug dispensing system.

[0243] In some embodiments, Fig. 12A and Fig. 12B As shown, the syringe 200 is integrally formed with two types of movable closure joints 22. Because the syringe 200 and the movable closure joint 22 are integrally formed, a large number of combinations of syringes 200 and movable closure joints 22 can be produced, reducing manufacturing costs, such as the waste of resources in the use of sterilization packaging bags and reducing the carbon emissions generated by sterilization. Users can also avoid assembling additional parts when using (for example, it can be applicable to combinations of syringes 200 and movable closure joints 22 of various milliliters), saving labor and time, having integration, and being more convenient in use and operation.

[0244] In some embodiments, Fig.13A , Fig. 13B and Fig. 13C As shown, the structural differences between the third closed needle-free connector module 21F and the third closed needle-free connector module 21D are: first, the outer side of the second connecting portion 232B has a stabilizing structure 2314; second, the second locking portion 2313 is arranged on an outer side surface of the second connecting portion 232B; third, the third closed needle-free connector module 21F further includes a balancing pressure valve 90, which is arranged between the second end 2322 of the second connecting portion 232B of the first needle-free connector 23D and the screw structure 52.

[0245] Preferably, the second end 2322 forms a chamber 23224, a bowl-shaped groove 524 is formed at the center of the top of the screw-connected structure 52, and the balanced pressure valve 90 is disposed in the chamber 23224 and includes a valve body 91 and a fixing portion 92. The valve body 91 is semi-spherical, located in the bowl-shaped groove 524, has a slit 911, and a bent portion 913 is formed on the outside thereof. The fixing portion 92 is disposed around the outside of the bent portion 913 of the valve body 91, the top of the fixing portion 92 abuts against the bottom of the second end 2322, the side wall of the fixing portion 92 abuts against the inner wall of the chamber 23224, and the bottom of the fixing portion 92 abuts against the top of the screw-connected structure 52.

[0246] like Fig.13D , Fig.13E and Fig.13FAs shown, the syringe 200 is connected to the first joint portion 222, the long tube 400 is connected to the screw structure 52, and the inner conduit 523 extends into the long tube 400. When the syringe 200 injects the liquid medicine into the human body through the separator 50 and the long tube 400, the syringe 200 provides positive pressure. Under the influence of the positive pressure, the liquid medicine will be concentrated in the inner space of the semi-spherical valve body 91 and move to store more liquid medicine. When the bent portion 913 of the semi-spherical valve body 91 cannot withstand the positive pressure, it will be forced by the liquid medicine and gradually move to open the slit 911, so that the liquid medicine can enter the long tube 400 through the slit 911 and the inner conduit 523.

[0247] like Figure 13G and Fig.13H As shown, after the syringe 200 is removed from the first coupling portion 222, the connecting tube 234, the third elastic valve 235 and the fourth elastic valve 236 are reset to provide negative pressure. Under the influence of the negative pressure, during the resetting process of the third elastic valve 235 and the fourth elastic valve 236, the part of the interior of the semi-spherical valve body 91 that was originally filled with liquid medicine continues to flow out from the slit 911 opened toward the output end until it is closed to achieve a pressure stabilization effect, and then the opening is closed to prevent the liquid medicine and blood from flowing back.

[0248] like Fig.13I and Fig.13J When the syringe 200 extracts excess liquid medicine through the separator 50 and the long tube 400, the syringe 200 provides negative pressure, and the slit 911 will be opened by the negative pressure to allow excess liquid medicine or the blood sample to be drawn without being damaged, so as to enter the syringe 200 through the separator 50.

[0249] In case the medicine bag falls during the use of infusion, or when the patient coughs, or when the medicine bag is lower than the human body, the balanced pressure valve 90 can prevent blood from flowing back.

[0250] In some embodiments, Fig.14A , Fig. 14B and Fig. 14C As shown, the structural difference between the third closed needle-free connector module 21G and the third closed needle-free connector module 21F is that the check valve 90A replaces the balanced pressure valve 90 .

[0251] Specifically, the second end 2322 of the second joint 232C of the first needle-free connector 23E forms an upper chamber 23225, the screw connection structure 52 forms a lower chamber 525, and the check valve 90A includes a valve body 91A, a fixing portion 92A, and a stopper 93. The valve body 91A is located in the lower chamber 525 and has a through hole 912. The top of the fixing portion 92 abuts against the bottom of the second end 2322, the side wall of the fixing portion 92 abuts against the inner wall of the lower chamber 525, and the bottom of the fixing portion 92 abuts against the top of the screw connection structure 52. The stopper 93 is disposed in the upper chamber 23225.

[0252] like Fig.14D and Fig.14E As shown, the syringe 200 is connected to the first joint portion 222, the long tube 400 is connected to the threaded structure 52, and the inner conduit 523 extends into the long tube 400. When the syringe 200 injects the liquid medicine into the human body through the separator 50 and the long tube 400, the syringe 200 provides positive pressure, and the valve body 91A is affected by the positive pressure and moves away from the stopper 93, and the stopper 93 no longer closes the through hole 912, so that the liquid medicine enters the long tube 400 through the through hole 912 and the inner conduit 523.

[0253] like Fig.14F and Figure 14G As shown, after the syringe 200 is removed from the first coupling portion 222, the connecting tube 234, the third elastic valve 235 and the fourth elastic valve 236 are reset to provide negative pressure, and the valve body 91A is affected by the negative pressure and abuts against the block 93, and the block 93 closes the through hole 912 to prevent the drug solution and blood from flowing back.

[0254] like Fig.15A , Fig. 15B and Fig. 15C As shown, the structural differences between the third closed needle-free connector module 21H and the third closed needle-free connector module 21F are as follows: first, the housing 231A and the second joint portion 232B of the first needle-free connector 23F are integrally formed; second, the outer wall of the second joint portion 232B has a plurality of anti-slip ribs 2323, which can prevent the user's hand from slipping; third, the interior of the second end 2322 of the second joint portion 232B has a block 2324, and the block 2324 has a third opening 23222; fourth, the screw structure 52 forms a lower chamber 525, the valve body 91 is located in the lower chamber 525, the top of the fixing portion 92 abuts against the bottom of the block 2324, the side wall of the fixing portion 92 abuts against the inner wall of the lower chamber 525, and the bottom of the fixing portion 92 abuts against the top of the screw structure 52. In some embodiments, the balanced pressure valve 90 of the third closed needle-free connector module 21H can be replaced by a check valve 90A.

[0255] In some embodiments, the check valve 90A replaces the balanced pressure valve 90. Specifically, the screw structure 52 forms a lower chamber 525, and the check valve 90A includes a valve body 91A, a fixing portion 92A, and a stopper 93. The valve body 91A is located in the lower chamber 525 and has a through hole 912. The stopper 93 and the block body 2324 are integrally formed.

[0256] like Fig.16A As shown, the difference in structure between the movable closed joint 22C of the third closed needle-free joint module 21I and the movable closed joint 22B of the third closed needle-free joint module 21E is that the first engaging portion 2214A can be arranged at the bottom of the lower barrel portion 22113C close to the movable closed joint 22C. In other words, the first engaging portion can be arranged at any position of the lower barrel portion of the movable closed joint.

[0257] like Fig.16A As shown, the structural differences between the first needle-free connector 23G of the third closed needle-free connector module 21I and the first needle-free connector 23F of the third closed needle-free connector module 21H are: first, the first needle-free connector 23G includes a connecting tube 234A and a fifth elastic valve 237. The connecting tube 234A is arranged in the second combining portion 232B, is conical in shape, and its top end is a closed end, and a through hole (not shown) is provided. The through hole passes through a side wall of the connecting tube 234A and communicates with the interior of the connecting tube 234A. The bottom end of the connecting tube 234A is a block 2324. The fifth elastic valve 237 is arranged in the second combining portion 232B and has a fifth circumferential portion 2371 and a fifth sealing portion 2372.

[0258] like Fig. 16B As shown, the difference between the docking method of the third closed needle-free connector module and the third closed needle-free connector modules 21E and 21F is that the connecting tube 234A opens a slit 2373 of the fifth sealing portion 2372 (see Fig.16A ), the connecting tube 234A pushes against and compresses the first sealing portion 2232, the connecting tube 234A passes through the first opening 22122 and enters the interior of the conduit 2212, the conduit 2212 compresses the fifth sealing portion 2372, and the fifth circumferential portion 2371 does not deform.

[0259] It is worth mentioning that the connecting tube 234 of the first needle-free connectors 23C to 23F is movable, and the connecting tube 234A of the first needle-free connector 23G is fixed. In other words, any type of movable closed joints 22A, 22B, 22C are applicable to the movable or fixed connecting tubes 234, 234A of the first needle-free connectors 23C to 23G.

[0260] Here, the term "medical device" is used to refer to any medical equipment commonly used in the medical field, in addition to any different form of implementation other than the connector disclosed herein, and can be used to connect or combine with other related connector devices for medical purposes.

[0261] The above description is only used to explain the preferred embodiments of the present invention, and is not intended to limit the present invention in any form. Therefore, any modifications or changes made to the present invention under the same inventive spirit should still be included in the scope of protection intended by the present invention.

Claims

1. A separator that is easy to fall off, characterized in that: include: a valve body; A threaded structure, wherein an internal thread at a first end of the threaded structure is threadedly connected to an external thread at a first end of the valve body and defines an input end of the separator, and the threaded structure has an internal conduit; an output end, a first end of the output end being disposed at a second end of the valve body; as well as A snap-on needle-free connector module, comprising: A movable closed joint comprises a body, a first combining part and a first elastic valve, wherein the body comprises a sleeve, a conduit, a positioning part and a first engaging part, wherein the conduit is arranged inside the sleeve and has a first passage and a first opening, wherein the positioning part is arranged inside the sleeve and outside the conduit, wherein the first engaging part is a convex block and is arranged on the sleeve, wherein the first combining part is arranged on the sleeve, wherein the first elastic valve comprises a first circumferential part and a first sealing part, wherein the two ends of the first circumferential part are arranged on the positioning part and the first combining part respectively, wherein the first sealing part is arranged in the first passage, wherein a first end of the first sealing part is connected to an inner side surface of the first circumferential part and has a plurality of through holes, wherein the plurality of through holes are communicated with the first passage, and wherein a second end of the first sealing part closes the first opening; and A needle-free connector comprises a shell, a second combination part and a second elastic valve, wherein the shell has a second engaging part, the second engaging part is a convex block and is arranged on an outer side surface of the shell or an outer side surface of the second combination part, a first end of the shell has a second opening, the second combination part is arranged at a second end of the shell, has a third opening and is combined with the screw connection structure, the third opening is communicated with the inner conduit, the second elastic valve comprises a second circumferential part and a second sealing part, the second circumferential part is arranged inside the shell and the second combination part and has a second channel, the second channel is communicated with the third opening, the third opening is communicated with the inner conduit, the second sealing part is arranged inside the shell and has a slit, and the second sealing part closes the second opening; Wherein, when the movable closed joint is docked with the needle-free connector, the first clamping portion is fixed to the second clamping portion, the force of the first clamping portion being fixed to the second clamping portion is 1.4 to 8.1 Newton meters, the conduit compresses the second sealing portion, the second sealing portion compresses the second circumferential portion, so that the second sealing portion is away from the second opening, and the conduit passes through the slit of the second sealing portion and enters the interior of the second sealing portion, the first end of the shell abuts against an inner wall of the sleeve, the positioning portion moves along the conduit in a direction away from the needle-free connector and compresses the first circumferential portion, so that the second end of the first sealing portion is separated from the first opening, and the first channel, the second channel and the inner conduit are communicated; and When the movable closed joint is separated from the needle-free connector, the first engaging portion is disengaged from the second engaging portion, and the catheter is disengaged from the second sealing portion, so that the slit of the second sealing portion is tightly closed, and the second sealing portion is reset and closes the second opening by the elastic force of the second circumferential portion, and the first end of the shell is disengaged from the sleeve, and the positioning portion and the first sealing portion are reset by the elastic force of the first circumferential portion, so that the second end of the first sealing portion closes the first opening.

2. The easily removable separator according to claim 1, characterized in that: The sleeve comprises an upper tube portion, a middle tube portion and a lower tube portion, the middle tube portion is arranged on the inner side of a first end of the upper tube portion, and the lower tube portion is arranged on the outer side of the first end of the upper tube portion, so that the middle tube portion extends inside the lower tube portion; wherein the conduit extends from the inside of the upper tube portion through the inside of the middle tube portion to the inside of the lower tube portion; wherein the positioning portion is located inside the upper tube portion; wherein the first clamping portion is arranged on an inner side surface of the lower tube portion and is located below the middle tube portion; wherein the first combining portion is arranged on a second end of the upper tube portion; wherein the shell comprises an upper shell and a lower shell, a first end of the upper shell has the second opening, an outer diameter of the upper shell is smaller than an outer diameter of the lower shell, and the second clamping portion is arranged on an outer side surface of a first end of the lower shell; wherein when the movable closed joint is docked with the needle-free connector, the first clamping portion is fixed to a bottom end of the second clamping portion, and a first end of the upper shell abuts against an inner wall of the middle tube portion.

3. The easily removable separator according to claim 2, characterized in that: When the height of the first clamping part protruding from the lower cylinder is 0.05mm, the force with which the first clamping part is fixed to the second clamping part is 2.7 Newton meters; wherein, when the height of the first clamping part protruding from the lower cylinder is 0.07mm, the force with which the first clamping part is fixed to the second clamping part is 4.1 Newton meters; wherein, when the height of the first clamping part protruding from the lower cylinder is 0.1mm, the force with which the first clamping part is fixed to the second clamping part is 5.4 Newton meters; wherein, when the height of the first clamping part protruding from the lower cylinder is 0.14mm, the force with which the first clamping part is fixed to the second clamping part is 8.1 Newton meters.

4. The easily removable separator according to claim 1, characterized in that: The invention further comprises a balanced pressure valve, which is arranged between the second connecting portion and the screw connection structure.

5. The easily removable separator according to claim 1, characterized in that: It further includes a check valve, which is arranged between the second connecting portion and the screw connection structure.

6. A separator that is easy to fall off, characterized in that: include: a valve body; A threaded structure, wherein an internal thread at a first end of the threaded structure is threadedly connected to an external thread at a first end of the valve body and defines an input end of the separator, and the threaded structure has an internal conduit; an output end, a first end of the output end being disposed at a second end of the valve body; as well as A snap-on needle-free connector module, comprising: A movable closed joint comprises a body, a first combining part and a first elastic valve, wherein the body comprises a sleeve, a conduit, a positioning part and a first engaging part, wherein the conduit is arranged inside the sleeve and has a first passage and a first opening, wherein the positioning part is arranged inside the sleeve and outside the conduit, wherein the first engaging part is a convex block and is arranged on the sleeve, wherein the first combining part is arranged on the sleeve, wherein the first elastic valve comprises a first circumferential part and a first sealing part, wherein one end of the first circumferential part is arranged on the positioning part, wherein the first sealing part is arranged in the first passage, wherein a first end of the first sealing part is connected to an inner side surface of the first circumferential part and has a plurality of through holes, wherein the plurality of through holes are communicated with the first passage, wherein a second end of the first sealing part closes the first opening; and A needle-free connector comprises a shell, a second combining part, a connecting pipe, a third elastic valve and a fourth elastic valve, the shell or the second combining part has a second clamping part, the second clamping part is a convex block and is arranged on an outer side surface of the shell or an outer side surface of the second combining part, a first end of the shell has a second opening, the second combining part is arranged at a second end of the shell, has a third opening, and is integrally formed with the screw connection structure, the third opening is communicated with the inner conduit, the connecting pipe is arranged in the shell and comprises an upper cylinder, a large diameter part and a lower cylinder, the upper cylinder is arranged above the large diameter part, the top end of the upper cylinder is a closed end, and at least one through hole is provided, the at least one through hole runs through a side wall of the upper cylinder and is communicated with the interior of the upper cylinder, the lower cylinder is arranged below the large diameter part, and its The bottom end is an open end, the interior of the upper cylinder, the interior of the large diameter portion and the interior of the lower cylinder are communicated, the third elastic valve is arranged in the shell and has a third circumferential portion and a third sealing portion, the third circumferential portion is arranged around the outer side of the upper cylinder and its bottom end is against the large diameter portion, the third sealing portion is arranged at the top end of the third circumferential portion and has a slit, the fourth elastic valve is arranged in the shell and has a fourth circumferential portion and a fourth sealing portion, the fourth circumferential portion is arranged around the outer side of the lower cylinder and its top end is against the large diameter portion, the fourth sealing portion is arranged at the bottom end of the fourth circumferential portion and against an inner side wall of the second combining portion, a second end of the shell presses the top end of the fourth sealing portion, the fourth sealing portion has a slit, and the slit of the fourth sealing portion is aligned with the interior of the lower cylinder and the third opening; Wherein, when the movable closed joint is docked with the needle-free connector, the first clamping part is fixed to the second clamping part, the force of the first clamping part being fixed to the second clamping part is 1.4 to 8.1 Newton meters, the upper cylinder opens the slit of the third sealing part, the upper cylinder pushes against and compresses the first sealing part, the upper cylinder passes through the first opening and enters the interior of the conduit, the conduit compresses the third sealing part, the third sealing part compresses the third circumferential part, so that the at least one through hole of the upper cylinder is exposed outside the third sealing part and is located inside the conduit, the third circumferential part pushes against the large diameter part, the large diameter part compresses the fourth circumferential part, the lower cylinder opens the slit of the fourth sealing part and enters the third opening, so that the first channel, the connecting pipe and the inner conduit are connected; When the movable closed joint is separated from the needle-free connector, the first engaging portion is disengaged from the second engaging portion, and the fourth circumferential portion pushes against the large diameter portion by its elastic force, so that the connecting tube and the third elastic valve move, and the lower cylinder returns to the interior of the fourth circumferential portion, so that the slit of the fourth sealing portion is sealed, and the third circumferential portion pushes against the conduit by its elastic force to drive the movable closed joint to move, so that the upper cylinder is disengaged from the conduit and returns to the third circumferential portion, and the conduit is disengaged from the third sealing portion, so that the slit of the third sealing portion is sealed, and the third sealing portion is reset by the elastic force of the third circumferential portion and closes the second opening, and the first end of the shell is disengaged from the sleeve, and the first sealing portion is reset by its elastic force, so that the second end of the first sealing portion closes the first opening.

7. The easily removable separator according to claim 6, characterized in that: The sleeve includes an upper tube portion and a lower tube portion, the lower tube portion is arranged on the outer side of the first end of the upper tube portion, wherein the conduit extends from the interior of the upper tube portion to the interior of the lower tube portion; wherein the positioning portion is located inside the upper tube portion; wherein the first clamping portion is arranged on an inner side surface of the lower tube portion; wherein the first combining portion is arranged on a second end of the upper tube portion; wherein the shell includes an upper shell and a lower shell, a first end of the upper shell has the second opening, the lower shell presses the top end of the fourth sealing portion, and the second clamping portion is arranged on an outer side surface of a first end of the lower shell; wherein, when the movable closed joint is docked with the needle-free connector, the first clamping portion is fixed to a bottom end of the second clamping portion.

8. The easily removable separator according to claim 7, characterized in that: When the height of the first clamping part protruding from the lower cylinder is 0.05mm, the force with which the first clamping part is fixed to the second clamping part is 2.7 Newton meters; wherein, when the height of the first clamping part protruding from the lower cylinder is 0.07mm, the force with which the first clamping part is fixed to the second clamping part is 4.1 Newton meters; wherein, when the height of the first clamping part protruding from the lower cylinder is 0.1mm, the force with which the first clamping part is fixed to the second clamping part is 5.4 Newton meters; wherein, when the height of the first clamping part protruding from the lower cylinder is 0.14mm, the force with which the first clamping part is fixed to the second clamping part is 8.1 Newton meters.

9. The easily removable separator according to claim 6, characterized in that: The invention further comprises a balanced pressure valve, which is arranged between the second connecting portion and the screw connection structure.

10. The easily removable separator according to claim 6, characterized in that: It further includes a check valve, which is arranged between the second connecting portion and the screw connection structure.

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