Disposable sterile disconnector

Abstract

The present invention discloses a disposable sterile disconnector, comprising a first connector, comprising a first shell, a first valve assembly and a first elastic driving member; a second connector, comprising a second shell, a second valve assembly and a second elastic driving member; a first gap for accommodating the first elastic driving member is provided between the first shell and the first valve assembly; a second gap for accommodating the second elastic driving member is provided between the second shell and the second valve assembly; the first and second connectors are in a connected state, the flow paths of the first and second valve assemblies are connected to form a flow channel for the flow of feed liquid, and the flow channel is isolated from the first and second gaps at the same time; when in a separated state, the flow channel between the first and second valve assemblies is disconnected to prevent the flow of feed liquid, and the flow path of the first valve assembly is isolated from the first gap, and the flow path of the second valve assembly is isolated from the second gap; the first and second elastic driving members of the present invention will not directly contact the feed liquid, thereby maintaining the sterility and cleanliness of the feed liquid.

Description

Technical Field

[0001] The invention belongs to the technical field of fluid coupling, and in particular relates to a disposable sterile disconnector. Background Art

[0002] Biological fluid bags (such as sampling bags, mixing bags, or bioreactor bags) all include a fluid transfer system consisting of multiple pipes, pumps, containers, fittings, connectors, heat exchangers, sensors, filters, valves, seals, etc., which provide the inlet, outlet, and transfer of feed fluids. To maintain sterility, biological fluid bags are typically single-use closed systems. After the exchange of fluids within the biological bag is completed, the internal and external parts of the biological fluid bag must be promptly disconnected to maintain the sterility of the biological fluid bag environment; therefore, a disconnector is often used to achieve this.

[0003] The disconnector structure currently widely used in the market includes two parts that cooperate with each other. According to the structure disclosed in CN1035898C, the tips of the valve core and the valve core press against each other, thereby applying backward force to each other to open the fluid passage between the male connector and the female connector. At this time, the metal springs of the valve cores on both sides are in a compressed state; since the metal springs of the valve cores on both sides are in direct contact with the liquid, they are prone to rust when exposed to radiation, which poses a risk of contaminating the liquid. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a disposable sterile disconnector, which can prevent the elastic driving member from directly contacting the feed liquid and thus contaminating the feed liquid.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] A disposable sterile disconnector, comprising:

[0007] A first connector comprising a first housing, a first valve assembly and a first elastic drive member;

[0008] a second connector detachably connected to the first connector, comprising a second housing, a second valve assembly, and a second elastic drive member;

[0009] A first gap is defined between the first housing and the first valve assembly to accommodate the first elastic driving member and provide space for axial expansion and contraction thereof;

[0010] A second gap is defined between the second housing and the second valve assembly to accommodate the second elastic driving member and provide space for axial expansion and contraction thereof;

[0011] The first connector and the second connector have a connected state and a separated state. When in the connected state, the flow path of the first valve assembly is connected to the flow path of the second valve assembly to form a flow path for the flow of feed liquid, and the flow path is isolated from the first gap and the second gap at the same time, and the first elastic driving member and the second elastic driving member are both in a compressed state; when in the separated state, the flow path between the first valve assembly and the second valve assembly is disconnected to prevent the flow of feed liquid, and the flow path of the first valve assembly is isolated from the first gap, and the flow path of the second valve assembly is isolated from the second gap, and the first elastic driving member and the second elastic driving member are both in an extended state.

[0012] By adopting the above technical solution, in the disposable sterile disconnector of the present invention, the first gap is located between the first shell and the first valve assembly, the first elastic driving member is in the first gap, and the second gap is located between the second shell and the second valve assembly, the second elastic driving member is in the second gap, that is, the first elastic driving member and the second elastic driving member will not directly contact the feed liquid; at the same time, there are no barriers in the first gap and the second gap, so that the first elastic driving member and the second elastic driving member can be extended and compressed axially without obstruction in the first gap and the second gap respectively; as the first connector and the second connector are connected, the first elastic driving member and the second elastic driving member are compressed, and the flow path between the first connector and the second connector is connected, forming a flow channel for the feed liquid to flow, The flow channel is isolated from the first gap and the second gap, so that the feed liquid does not contact the first elastic driving member and the second elastic driving member, thereby avoiding the risk of the feed liquid contacting the elastic driving member and being contaminated; as the first connector and the second connector are separated, the first elastic driving member and the second elastic driving member extend, the flow channel between the first connector and the second connector is disconnected, and the feed liquid cannot flow between the first valve assembly and the second valve assembly. At this time, the flow path in the first connector and the first elastic driving member, and the flow path in the second connector and the second elastic driving member remain isolated from each other, that is, the first elastic driving member and the second elastic driving member will not directly contact the feed liquid, thereby maintaining the sterility and cleanliness of the feed liquid; the structure of the first connector and the second connector may be the same or different.

[0013] Furthermore, the first valve assembly includes at least a first body and a first valve sleeve, the first body having a first hollow cavity and a first side opening communicating with the first hollow cavity, the first valve sleeve being movably sleeved on the outer side of the first body to form the first gap between the first body, the first valve sleeve and the first shell;

[0014] The second valve assembly includes at least a second body and a second valve sleeve, the second body having a second hollow cavity and a second side opening communicating with the second hollow cavity, the second valve sleeve being movably sleeved on the outer side of the second body to form the second gap between the second body, the second valve sleeve and the second housing;

[0015] When the first connector and the second connector are switched from a connected state to a separated state, the first elastic driving member stretches to push the first valve sleeve to seal and block the first side opening, and the second elastic driving member stretches to push the second valve sleeve to seal and block the second side opening, and the flow channel is disconnected.

[0016] By adopting the above technical solution, the movement process is: when the material liquid is transferred between the first connector and the second connector, the first connector and the second connector are in a connected state, at this time the first shell and the second shell abut each other, the first valve sleeve and the second valve sleeve are close to each other at one end and are tightly pressed against each other, and are axially in a sealed connection state, at this time the flow channel is in a sealed state and is isolated from both the first gap and the second gap, the first elastic driving member and the second elastic driving member are in a compressed state, forcing the first valve sleeve to disengage from the first side opening and the second valve sleeve to disengage from the second side opening, the material liquid flows out through the first side opening of the first hollow cavity and flows into the second hollow cavity through the second side opening; when the first connector and the second connector are in a separated state, at this time as the first connector and the second connector tend to separate in a direction away from each other, the abutment between the first valve sleeve and the second valve sleeve is cancelled and tends to move closer to each other. Movement, at the same time, the pressure between the first elastic driving member and the second elastic driving member also disappears, and as the first elastic driving member and the second elastic driving member recover their natural stretched state, they respectively push the first valve sleeve to seal the first side opening and the second valve sleeve to seal the second side opening, and the flow path between the first side opening and the second side opening is disconnected; a single simple part is used as a sealing member, that is, the axial movement of the first valve sleeve and the second valve sleeve to seal the first side opening and the second side opening respectively, compared with other complex parts or multiple parts movement to seal the first side opening and the second side opening, the first valve sleeve and the second valve sleeve have a simple structure and a smooth movement process, avoiding jamming or insufficient driving force during the movement, which causes the first valve sleeve and the second valve sleeve to fail to reach the sealing position, reducing the accuracy and precision of the sealing process, and resulting in failure of the sealing effect of the first side opening and the second side opening. In addition, since the first elastic driving member is surrounded by the outer peripheral surface of the first main body having the first hollow cavity, and the second elastic driving member is surrounded by the outer peripheral surface of the second main body having the second hollow cavity, and when the first connector is connected to the second connector, the first side opening is sealed by the first valve sleeve and the second side opening is sealed by the second valve sleeve, so that the feed liquid flows in a sealed space isolated from both the first elastic driving member and the second elastic driving member without contacting the first elastic driving member and the second elastic driving member, thereby avoiding the risk of the elastic driving member contacting the feed liquid and contaminating it, and maintaining the sterility and cleanliness of the feed liquid.

[0017] Furthermore, the first body has a first sealing end for blocking one end of the first hollow cavity, and the second body has a second sealing end for blocking one end of the second hollow cavity;

[0018] A connecting piece is provided between the first valve sleeve and the second valve sleeve. When the first connector and the second connector are in a connected state, the first sealing end and the second sealing end are enclosed in the connecting piece, and the connecting piece is located inside the first shell and the second shell. When the first connector and the second connector are in a disconnected state, the connecting piece is located outside the first shell and the second shell for receiving the feed liquid.

[0019] The connecting member is integrally connected to the first valve sleeve or the second valve sleeve; or, the connecting member is divided into two parts, and is respectively connected to one end of the first valve sleeve and the second valve sleeve that are close to each other; or, the connecting member is separately arranged from the first valve sleeve and the second valve sleeve.

[0020] By adopting the above technical solution, the provision of the first sealing end and the second sealing end ensures that the liquid in the first hollow cavity and the second hollow cavity are isolated from the first elastic driving member and the second elastic driving member; because when the flow path between the first connector and the second connector is connected, the first valve sleeve and the connecting member and the second valve sleeve are all in direct contact with the liquid as a whole, and the connecting member surrounds the outer periphery of the first sealing end and the second sealing end to prevent the liquid from leaking, thereby preventing the liquid from contacting the first elastic driving member and the second elastic driving member, thereby ensuring the sterility and cleanliness of the liquid; when the flow path between the first connector and the second connector is disconnected, the elastic driving member tends to move toward the extension state, pushing the first valve sleeve and the connecting member and the second valve sleeve to move toward the approach direction to seal the first side opening and the second side opening, so that a connecting member is connected to one of the first valve sleeve or the second valve sleeve, and the inner surface of the connecting member at the part where the two are close to each other can receive the liquid, thereby preventing the residual liquid from scattering randomly when the first connector and the second connector are disconnected, and preventing the liquid from leaking and polluting the external environment; the structure of the first body and the second body can be the same Or they can be different. When the structures of the first body and the second body are the same, they include two structures. The connecting piece is divided into two parts, and the two parts are respectively connected to the ends of the first valve sleeve and the second valve sleeve that are close to each other. The two parts of the connecting piece are respectively used to receive the residual liquid of the first connector and the residual liquid of the second connector. The liquid receiving effect is better, and the two parts of the connecting piece have the same structure and high docking accuracy; or the connecting piece is an independent component, which is neither connected to the first valve sleeve nor to the second valve sleeve. When the connecting piece is removed, it can also receive the residual liquid of the first connector and the residual liquid of the second connector. It is convenient to disassemble and assemble, and different types of connecting pieces can be selected according to different usage scenarios; when the structures of the first body and the second body are different, the connecting piece can be integrally connected to the first valve sleeve, or integrally connected to the second valve sleeve. At this time, the connecting piece can relatively more effectively receive the residual liquid of one of the first connector and the second connector. Of course, when the first connector and the second connector are disconnected, they can also be relatively tilted so that the residual liquid in the connector without a connecting piece flows to the connecting piece.

[0021] Furthermore, the connecting member overlaps with at least part of the first valve sleeve and / or the second valve sleeve in the axial direction to form an overlapping sealing area, which is arranged around the axis and extends along the axial direction.

[0022] By adopting the above technical solution, when the flow path between the first connector and the second connector is connected, an overlapping sealing area is formed at one end of the connector and the valve sleeve that is close to each other, which has a better sealing effect, so that the connection between the two can withstand a greater pressure and avoid leakage at the connection. The overlapping sealing area here is set as a complete circle around the axis, and of course it can also be a complete multiple circles. Its structural strength is high and the sealing effect is good, which avoids leakage of the first valve sleeve and the second valve sleeve at the connection position due to the pressure of the liquid.

[0023] Furthermore, when the first valve sleeve seals and blocks the first side opening, a first sealing position is formed between the first valve sleeve, the first body, and the first sealing end;

[0024] When the second valve sleeve seals and blocks the second side opening, a second sealing position is formed between the second valve sleeve, the second body and the second sealing end;

[0025] The first sealing position and the second sealing position are both provided with elastic sealing members.

[0026] By adopting the above technical solution, since the first main body and the first valve sleeve are both injection molded parts, compared with the sealing form of contact between rigid materials between injection molded parts, the sealing form between the elastic seal and the injection molded part will seal the sealing part as the elastic seal deforms, with good sealing effect to avoid leakage; the provision of multiple first sealing positions ensures effective sealing between the first main body and the first valve sleeve, especially between the two axial ends of the first side opening, to avoid leakage of the material and liquid in the first connector when the first connector and the second connector are disconnected; the second main body and the second valve sleeve are both injection molded parts, compared with the sealing form of contact between rigid materials between injection molded parts, the sealing form between the elastic seal and the injection molded part will seal the sealing part as the elastic seal deforms, with good sealing effect to avoid leakage; the provision of multiple second sealing positions ensures effective sealing between the second main body and the second valve sleeve, especially between the two axial ends of the first side opening, to avoid leakage of the material and liquid in the second connector when the first connector and the second connector are disconnected.

[0027] Furthermore, a portion of the first valve sleeve protrudes toward the central axis of the first body to form a first convex portion, and a first concave portion is formed axially on the first body corresponding to the first side opening, and the first convex portion is axially movable within the first concave portion.

[0028] A first latching position is provided on the outer periphery of the first sealing end, and when the first valve sleeve seals and blocks the first side opening, the first protruding position seals and cooperates with the first latching position;

[0029] A portion of the second valve sleeve protrudes toward the central axis of the second body to form a second convex portion, and a second concave portion is formed axially on the second body corresponding to the second side opening. The second convex portion is axially movable within the second concave portion.

[0030] A second clamping position is provided on the outer periphery of the second sealing end. When the second valve sleeve seals and blocks the second side opening, the second protruding position seals and cooperates with the second clamping position.

[0031] By adopting the above technical solution, the first convex position, the second convex position, the first concave position, the second concave position, the first clamping position and the second clamping position cooperate to realize fluid connection and fluid disconnection between the first connector and the second connector, wherein the thickness of the first convex position and the second convex position, the first concave position and the second concave position, the first clamping position and the second clamping position are basically close, taking into account the thickness uniformity and good sealing of the workpiece during the injection molding process; such a structural arrangement can also reduce the overall volume of the disconnector, and while ensuring that an effective overlapping sealing area is formed between the first valve sleeve and the connecting piece, when the first valve assembly and the second valve assembly push each other, the first valve sleeve can smoothly translate along the axial direction.

[0032] Furthermore, when the first connector and the second connector are in a connected state, the first sealing end and the second sealing end end are in contact.

[0033] By adopting the above technical solution, when the first sealing end and the second sealing end are in contact, the flow path between the first connector and the second connector is connected, and the feed liquid will directly contact the first sealing end and the second sealing end in the process of flowing from the first side opening to the second side opening, causing the side of the first sealing end and the second sealing end close to each other to be attracted together by the surface tension of the liquid. When the flow path between the first connector and the second connector is disconnected, the first sealing end and the second sealing end are difficult to be quickly separated in a short time; when the side of the first sealing end and the second sealing end close to each other is in point contact, the contact area between the first sealing end and the second sealing end is the smallest, so they can be quickly separated in a short time, avoiding the feed liquid from being exposed and contaminated, or avoiding too much feed liquid from adhering to the first sealing end and the second sealing end, and leaking to the outside to pollute the environment when the first sealing end and the second sealing end are separated.

[0034] Furthermore, the side of the first sealing end and / or the second sealing end that is away from each other is tapered to form a guiding surface.

[0035] By adopting the above technical solution, the side of the first sealing end away from the second sealing end is conical, thereby forming a guiding surface that can guide the liquid to the multiple first side openings in the circumferential direction, and then the liquid in the first hollow cavity is quickly guided to the first side opening; similarly, the side of the second sealing end away from the first sealing end can also be conical, thereby forming a guiding surface that can gather the liquid flowing into the multiple second side openings into the second hollow cavity, and then the liquid in the second hollow cavity is quickly guided to the outlet side; in summary, the conical structure accelerates the transfer of the liquid between the first connector and the second connector.

[0036] Furthermore, the number of the first side openings is multiple, the total area of ​​the multiple first side openings is S1, the cross-sectional area of ​​the first hollow cavity is S2, and S1>S2 is satisfied between S1 and S2; or / and, the number of the second side openings is multiple, the total area of ​​the multiple second side openings is S3, the cross-sectional area of ​​the second hollow cavity is S4, and S3>S4 is satisfied between S3 and S4.

[0037] By adopting the above technical solution, S1 represents the total transfer flux of the feed liquid through multiple first side openings, S3 represents the total transfer flux of the feed liquid through multiple second side openings, S2 represents the transfer flux of the feed liquid in the first hollow cavity, and S4 represents the transfer flux of the feed liquid in the second hollow cavity; when S1>S2, or / and S3>S4, the feed liquid is prompted to quickly pass through the first side opening and the second side opening from the first hollow cavity to the second hollow cavity, thereby realizing the rapid transfer of the feed liquid between the first connector and the second connector, avoiding the feed liquid from staying in the disconnector for a long time and making it difficult to ensure sterility.

[0038] Furthermore, the first side opening is coaxially arranged with the first hollow cavity, and the end of the first side opening smoothly transitions to the inner wall of the first hollow cavity; or / and, the second side opening is coaxially arranged with the second hollow cavity, and the end of the second side opening smoothly transitions to the inner wall of the second hollow cavity.

[0039] By adopting the above technical solution, it is beneficial to the rapid convergence and dispersion of the feed liquid, accelerate the rapid transfer of the feed liquid, improve the transfer rate of the feed liquid, further reduce the residence time of the feed liquid in the disconnector, and ensure good sterility.

[0040] Furthermore, the first shell is provided with a first limiting member, and the second shell is provided with a second limiting member. When the first connector and the second connector are in a connected state, the first limiting member and the second limiting member are in an axial limiting zone to limit the axial movement of the first shell and the second shell.

[0041] By adopting the above technical solution, the first limit member and the second limit member can be any limit member structure that can be realized by technical personnel in this field, as long as it can ensure that the two can stop each other in the axial limit area to limit the axial movement of the first shell and the second shell; the first limit member and the second limit member are hooked with each other to prevent the first connector and the second connector from separating and disengaging along their axes; the axial limit area is an area range, and when the first connector and the second connector produce a small relative rotation, the two will not be completely disconnected, thereby ensuring the stability of the connection between the two.

[0042] Furthermore, a guide limiter is provided between the inner wall of the first shell and the outer wall of the first valve sleeve to limit the circumferential rotation of the first valve sleeve and the first shell, or / and a guide limiter is provided between the inner wall of the second shell and the outer wall of the second valve sleeve to limit the circumferential rotation of the second valve sleeve and the second shell.

[0043] By adopting the above technical solution, the guide limiter between the first shell and the first valve sleeve can prevent the first valve sleeve from circumferential rotation, ensure the accuracy of the axial translation of the first valve sleeve, and prevent circumferential deviation, and at the same time limit the stroke of the axial translation of the first valve sleeve, thereby limiting the excessive axial extension of the first elastic driving member and the excessive axial movement of the first valve sleeve to make it impossible to close the first side opening; the guide limiter between the second shell and the second valve sleeve can prevent the second valve sleeve from circumferential rotation, ensure the accuracy of the axial translation of the second valve sleeve, and prevent circumferential deviation, and at the same time limit the stroke of the axial translation of the second valve sleeve, thereby limiting the excessive axial extension of the second elastic driving member and the excessive axial movement of the second valve sleeve to make it impossible to close the second side opening.

[0044] Furthermore, the guide limiter comprises a slide groove provided on the inner wall of the first shell and a slider provided on the outer wall of the first valve sleeve, and the slider is connected to the slide groove in an axially sliding manner.

[0045] By adopting the above technical solution, the matching structure of the slider and the slide groove is simple and effective. As the slider slides and is connected in the slide groove, the first valve sleeve can only move axially relative to the first shell, and the second valve sleeve can only move axially relative to the second shell, and no circumferential deflection will occur, thereby ensuring the axial movement of the first valve sleeve relative to the first shell and the axial movement of the second valve sleeve relative to the second shell. It is not easy to shake, avoiding the instability of the connection state due to misoperation or external vibration, and ensuring the sterility of the connection state; the elastic driving member can abut against the slider, so that the matching of the slider and the slide groove also limits the compression and extension stroke of the first elastic driving member and the second elastic driving member, avoiding excessive extension of the elastic driving member.

[0046] Furthermore, the first shell is provided with a third limit member, and the second shell is provided with a fourth limit member, which are connected with the circumferential rotation of the first shell and the second shell until the third limit member and the fourth limit member are in the circumferential limit zone to limit the circumferential movement of the first shell and the second shell. At this time, the first limit member and the second limit member are in the axial limit zone.

[0047] By adopting the above technical solution, the mutual stopping of the first limit member and the second limit member needs to rely on the third limit member and the fourth limit member to stop each other. Therefore, the first limit member and the second limit member first form a stopping effect, and then the third limit member and the fourth limit member play a double stopping role, avoiding the first connector and the second connector from separating and disengaging along their circumferential directions. When the first shell and the second shell are in the circumferential limit area while also in the axial limit area, they play a double limiting role to ensure the stable connection between the first shell and the second shell; the third limit member and the fourth limit member not only prevent circumferential rotation, but also prevent the first shell and the second shell from being pulled apart axially.

[0048] Furthermore, the third limiting member and the fourth limiting member are connected in a circumferential sliding manner around the first main body, and the central angle of the moving path corresponding to the circumferential limiting area when the two are slidably connected to the circumferential limiting area is 30-60°.

[0049] By adopting the above technical solution, the circumferential rotation angle of the third limiter and the fourth limiter is too large, the rotation distance is too long, the flow path is difficult to disconnect quickly in a short time, and it is difficult to ensure sterility; if the circumferential rotation angle is too small, there is little contact between the third limiter and the fourth limiter, and it is difficult to ensure the firmness and stability of the connection between the first shell and the second shell. Such an angle setting can take into account the problems of quick disconnection and connection stability, which can not only ensure quick disconnection, ensure the sterility and purity of the feed liquid, but also ensure that the first shell and the second shell are firmly connected, and are not easily adversely affected by external vibration or shaking or human misoperation, thereby ensuring sterility in the connected state.

[0050] Furthermore, a removable limiting strip is provided at the junction of the first shell and the second shell.

[0051] By adopting the above technical solution, the removable limit strip can be an adhesive strip, or a component that cooperates with the first limit member and the second limit member to further fix the connection between the first limit member and the second limit member, thereby avoiding misoperation that causes the first limit member and the second limit member to rotate and cause the first connector and the second connector to separate.

[0052] The beneficial effects of the present invention are:

[0053] 1) In the disposable aseptic disconnector of the present invention, neither the first elastic driving member nor the second elastic driving member directly contacts the feed liquid; neither the first gap nor the second gap has a barrier, so that the first elastic driving member and the second elastic driving member can extend and compress axially without obstruction within the first gap and the second gap, respectively; when the first connector and the second connector are connected, the first elastic driving member and the second elastic driving member are compressed, and the flow path between the first connector and the second connector is connected, forming a flow channel for the flow of the feed liquid. Since the flow channel is isolated from the first gap and the second gap, the feed liquid does not contact the first elastic driving member and the second elastic driving member, thereby avoiding the risk of the feed liquid contacting the elastic driving member and being contaminated; when the first connector and the second connector are separated, the first elastic driving member and the second elastic driving member extend, and the flow path between the first connector and the second connector is disconnected, and the feed liquid cannot flow between the first valve assembly and the second valve assembly. At this time, the flow path in the first connector and the first elastic driving member, and the flow path in the second connector and the second elastic driving member remain isolated from each other, that is, the first elastic driving member and the second elastic driving member do not directly contact the feed liquid, thereby maintaining the sterility and cleanliness of the feed liquid;

[0054] 2) When the feed liquid is transferred between the first connector and the second connector, the first connector and the second connector are in a connected state, at this time, the first shell and the second shell are abutted, the ends of the first valve sleeve and the second valve sleeve close to each other are pressed against each other, and the axial direction is in a sealed connection state, the flow channel is in a sealed state, forcing the first elastic driving member and the second elastic driving member to be in a compressed state, the first valve sleeve is separated from the first side opening and the second valve sleeve is separated from the second side opening, the feed liquid flows out through the first side opening of the first hollow cavity and flows into the second hollow cavity through the second side opening; the first connector and the second connector are in a separated state, at this time, as the first connector and the second connector tend to separate in the direction away from each other, the abutment between the first valve sleeve and the second valve sleeve is cancelled, so that the first elastic driving member When the pressure between the first and second elastic driving members disappears, the first valve sleeve and the second valve sleeve tend to move toward each other. In the process of restoring the naturally stretched state, the first elastic driving member and the second elastic driving member respectively push the first valve sleeve to seal the first side opening and the second valve sleeve to seal the second side opening, and the flow path between the first side opening and the second side opening is disconnected; the first elastic driving member surrounds the outer circumference of the first main body having the first hollow cavity, and the second elastic driving member surrounds the outer circumference of the second main body having the second hollow cavity. The feed liquid flows in the sealed space isolated from the first elastic driving member and the second elastic driving member without contacting the first and second elastic driving members, thereby avoiding the risk of the elastic driving members contacting the feed liquid and contaminating it, thereby maintaining the sterility and cleanliness of the feed liquid;

[0055] 3) When the flow path between the first connector and the second connector is connected, the first valve sleeve and the connecting piece as well as the second valve sleeve are in direct contact with the liquid as a whole, and the connecting piece surrounds the outer periphery of the first sealing end and the second sealing end to prevent leakage of the liquid, thereby preventing the liquid from contacting the first elastic driving piece and the second elastic driving piece, thereby ensuring the sterility and cleanliness of the liquid; when the flow path between the first connector and the second connector is disconnected, the elastic driving piece tends to move toward the extension state and pushes the first valve sleeve and the connecting piece as well as the second valve sleeve to move toward the approach direction to seal the first side opening and the second side opening, so that a connecting piece is connected to one of the first valve sleeve or the second valve sleeve, and the inner surface of the connecting piece at the part where the two are close to each other can receive the liquid, thereby preventing the residual liquid from being scattered at will when the first connector and the second connector are disconnected, and preventing the liquid from leaking and polluting the external environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 This is a three-dimensional diagram of the disposable sterile disconnector provided in Example 1 of the present invention.

[0057] Figure 2 This is a three-dimensional cross-sectional view of the first connector provided in the first embodiment of the present invention.

[0058] Figure 3 This is a three-dimensional cross-sectional view of the second connector provided in the first embodiment of the present invention.

[0059] Figure 4 This is a cross-sectional view of the disposable sterile disconnector provided in the first embodiment of the present invention, where the first connector and the second connector are in a connected state.

[0060] Figure 5 This is a three-dimensional cross-sectional view of the disposable sterile disconnector provided in the first embodiment of the present invention, where the first connector and the second connector are in a connected state.

[0061] Figure 6 This is a three-dimensional cross-sectional view of the disposable sterile disconnector provided in the first embodiment of the present invention. At this time, the first connector and the second connector are in a connected state, and the first shell and the second shell are omitted. Figure 7 This is a disassembled front view of the first connector and the second connector provided in the first embodiment of the present invention. At this time, the first connector and the second connector are in a separated state.

[0062] Figure 8 This is a disassembled cross-sectional view of the first connector and the second connector provided in the first embodiment of the present invention, where the first connector and the second connector are in a separated state.

[0063] Figure 9 This is a schematic diagram of the matching structure of the first body and the second body in the disposable sterile disconnector provided in Example 1 of the present invention.

[0064] Figure 10 This is a three-dimensional diagram of the first valve sleeve in Example 1 of the present invention.

[0065] Figure 11 This is a three-dimensional diagram of the second valve sleeve in Example 1 of the present invention.

[0066] Figure 12 This is a three-dimensional diagram of the first housing in embodiment 1 of the present invention.

[0067] Figure 13 This is a top view of the first housing in the first embodiment of the present invention.

[0068] Figure 14 This is a three-dimensional diagram of the second housing in the first embodiment of the present invention.

[0069] Figure 15 This is a front view of the second housing in the first embodiment of the present invention.

[0070] Figure 16 This is a cross-sectional view of the disposable sterile disconnector provided in the second embodiment of the present invention, where the first connector and the second connector are in a connected state.

[0071] Figure 17 This is a three-dimensional cross-sectional view of the disposable sterile disconnector provided in the second embodiment of the present invention, where the first connector and the second connector are in a connected state.

[0072] Figure 18 This is a disassembled front view of the first connector and the second connector provided in the second embodiment of the present invention, where the first connector and the second connector are in a separated state.

[0073] Figure 19 This is a disassembled cross-sectional view of the first connector and the second connector provided in the second embodiment of the present invention, where the first connector and the second connector are in a separated state.

[0074] Figure 20 This is a three-dimensional cross-sectional view of the first connector provided in the second embodiment of the present invention.

[0075] Figure 21 This is a three-dimensional cross-sectional view of the second connector provided in the second embodiment of the present invention.

[0076] Figure 22 A three-dimensional diagram of the first valve sleeve and the connector provided in the second embodiment of the present invention.

[0077] Figure 23 This is a three-dimensional diagram of the disposable sterile disconnector provided in Example 3 of the present invention.

[0078] Figure 24This is a cross-sectional view of the disposable sterile disconnector provided in the third embodiment of the present invention, where the first connector and the second connector are in a connected state.

[0079] Figure 25 This is a three-dimensional cross-sectional view of the disposable sterile disconnector provided in Example 3 of the present invention, where the first connector and the second connector are in a connected state.

[0080] Figure 26 This is a disassembled cross-sectional view of the disposable sterile disconnector provided in Example 3 of the present invention, where the first connector and the second connector are in a separated state.

[0081] Figure 27 This is a disassembled sectional stereoscopic view of the disposable sterile disconnector provided in the third embodiment of the present invention, where the first connector and the second connector are in a separated state.

[0082] Figure 28 This is a three-dimensional diagram of the connecting piece provided in Example 3 of the present invention.

[0083] Among them, 1-first connector, 11-first housing, 110-connecting ring, 111-first limiter, 112-third limiter, 1121-end point, 113-slide, 114-connecting surface, 115-limiting gap, 2-second connector, 21-second housing, 211-second limiter, 212-fourth limiter, 3-first valve assembly, 31-first main body, 311-first hollow cavity, 312-first side opening, 313-first sealing end, 3131-first clamping position, 3132-guide surface, 314-first concave position, 32-first A valve sleeve, 321-first convex position, 322-slider, 323-annular convex edge, 4-first elastic driving member, 5-second valve assembly, 51-second main body, 511-second hollow cavity, 512-second side opening, 513-second sealing end, 5131-second clamping position, 514-second concave position, 52-second valve sleeve, 521-second convex position, 6-second elastic driving member, 71-first gap, 72-second gap, 8-flow channel, 9-connecting member, 91-overlapping sealing area, 92-first sealing position, 93-second sealing position, 94-limiting rib. DETAILED DESCRIPTION

[0084] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0085] like Figure 1-28 As shown, the disposable sterile disconnector includes a first connector 1 and a second connector 2 detachably connected to the first connector 1; the first connector 1 includes a first shell 11, a first valve assembly 3 and a first elastic drive member 4, and the second connector 2 includes a second shell 21, a second valve assembly 5 and a second elastic drive member 6. There is a first gap 71 between the first shell 11 and the first valve assembly 3, and the first gap 71 is used to accommodate the first elastic drive member 4 and provide space for its axial expansion and contraction; there is a second gap 72 between the second shell 21 and the second valve assembly 5, and the second gap 72 is used to accommodate the second elastic drive member 6 and provide space for its axial expansion and contraction. In this embodiment, the axial direction refers to the direction in which the first connector 1 and the second connector 2 are engaged and allow the flow of liquid, specifically Figure 4 The direction in which the O line extends.

[0086] The first connector 1 and the second connector 2 have a connected state and a separated state. When the two are in the connected state, the flow path of the first valve assembly 3 and the flow path of the second valve assembly 5 are connected to form a flow channel 8, and the flow channel 8 allows the feed liquid to flow. The flow channel 8 is isolated from the first gap 71 and the second gap 72 at the same time, and the first elastic driving member 4 and the second elastic driving member 6 are both in a compressed state.

[0087] When the first connector 1 and the second connector 2 are in a separated state, the flow channel 8 between the first valve assembly 3 and the second valve assembly 5 is disconnected, thereby preventing the flow of the liquid, and the flow path of the first valve assembly 3 is isolated from the first gap 71, and the flow path of the second valve assembly 5 is isolated from the second gap 72, and the first elastic driving member 4 and the second elastic driving member 6 are both in an extended state.

[0088] The structures of the first connector 1 and the second connector 2 in the disposable sterile disconnector of the present invention may be the same or different. The first gap 71 is located between the first shell 11 and the first valve assembly 3, and the second gap 72 is located between the second shell 21 and the second valve assembly 5, that is, the first elastic drive member 4 and the second elastic drive member 6 will not be in direct contact with the liquid; since the first gap 71 and the second gap 72 are both continuously extended, it means that there are no barriers in the first gap 71 and the second gap 72, so that the first elastic drive member 4 and the second elastic drive member 6 can be stretched and compressed without obstruction in the first gap 71 and the second gap 72 respectively; as the first connector 1 and the second connector 2 are connected, the first elastic drive member 4 and the second elastic drive member 6 are compressed, and the first connector 1 and the second connector are connected. The flow path between the connectors 2 is connected to form a flow path 8 to supply the feed liquid. Since the flow path 8 is isolated from the first gap 71 and the second gap 72, the feed liquid does not contact the first elastic driving member 4 and the second elastic driving member 6, thereby avoiding the risk of the feed liquid contacting the elastic driving members and being contaminated; as the first connector 1 and the second connector 2 are separated, the first elastic driving member 4 and the second elastic driving member 6 are extended, and the flow path 8 between the first connector 1 and the second connector 2 is disconnected, and the feed liquid cannot flow between the first valve assembly 3 and the second valve assembly 5. At this time, the flow path in the first connector 1 and the first elastic driving member 4, and the flow path in the second connector 2 and the second elastic driving member 6 remain isolated from each other, that is, the first elastic driving member 4 and the second elastic driving member 6 will not directly contact the feed liquid.

[0089] Example 1

[0090] This embodiment is based on the above structure. Figure 2 As shown, the first valve assembly 3 includes at least a first body 31 and a first valve sleeve 32. The first body 31 has a first hollow cavity 311, a first side opening 312 communicating with the first hollow cavity 311, and a first sealing end 313 that blocks one end of the first hollow cavity 311. The first valve sleeve 32 is movably mounted on the outside of the first body 31, thereby moving within a first gap 71 formed between the first body 31, the first valve sleeve 32, and the first housing 11. The first elastic driving member 4 is axially mounted on the outside of the first body 31, located within the first gap 71, with its two ends respectively abutting the first body 31 and the first valve sleeve 32.

[0091] like Figure 3As shown, the second valve assembly 5 includes at least a second body 51 and a second valve sleeve 52. The second body 51 has a second hollow cavity 511, a second side opening 512 communicating with the second hollow cavity 511, and a second sealing end 513 that blocks one end of the second hollow cavity 511. The second valve sleeve 52 is movably mounted on the outside of the second body 51, thereby moving within the second gap 72 formed between the second body 51, the second valve sleeve 52, and the second housing 21. The second elastic driving member 6 is axially mounted on the outside of the second body 51, located within the second gap 72, with its two ends respectively abutting the second body 51 and the second valve sleeve 52.

[0092] like Figure 4-6 As shown, when the first connector 1 and the second connector 2 are in a connected state, the first shell 11 and the second shell 21 are in abutment, the first valve sleeve 32 and the second valve sleeve 52 are close to each other at one end and are tightly pressed against each other and are axially in a sealed connection state, and the flow channel 8 is in a sealed state. At the same time, pushed by the first valve sleeve 32 and the second valve sleeve 52, the first elastic driving member 4 and the second elastic driving member 6 are compressed. The first valve sleeve 32 is separated from the first side opening 312, and the second valve sleeve 52 is separated from the second side opening 512, that is, the first side opening 312 is open, and the second side opening 512 is open, so that the first hollow cavity 311 and the second hollow cavity 511 are connected to each other through the first side opening 312 and the second side opening 512, and the flow path of the first valve assembly 3 is connected with the flow path of the second valve assembly 5 to form a flow channel 8 for the flow of the feed liquid. The feed liquid enters the first hollow cavity 311 of the first connector 1, flows out from the first side opening 312, flows to the second side opening 512, and then enters the second hollow cavity 511, and finally flows out of the second connector 2, that is, the feed liquid flows along the first hollow cavity 311 of the first connector 1, flows out from the first side opening 312, flows to the second side opening 512, and then enters the second hollow cavity 511, and finally flows out of the second connector 2, that is, the feed liquid flows along the second side opening 512. Figure 4 The entire flow channel 8 and the first gap 71 and the second gap 72 are isolated from each other, ensuring that the liquid does not contact the first elastic driving member 4 and the second elastic driving member 6, thereby maintaining the sterility and cleanliness of the liquid.

[0093] At this time, in this embodiment, the first sealing end 313 and the second sealing end 513 are in point contact. When the flow path between the first connector 1 and the second connector 2 is connected, the feed liquid will directly contact the first sealing end 313 and the second sealing end 513 in the process of flowing from the first side opening 313 to the second side opening 512, causing the first sealing end 313 and the second sealing end 513 to be attracted together on the side close to each other due to the surface tension of the liquid. When the flow path between the first connector 1 and the second connector 2 is disconnected, the first sealing end 313 and the second sealing end 513 are difficult to be quickly separated in a short time; when the first sealing end 313 and the second sealing end 513 are in point contact on the side close to each other, the contact area between the first sealing end 313 and the second sealing end 513 is the smallest, so they can be quickly separated in a short time, avoiding the feed liquid from being exposed and contaminated, or avoiding excessive attachment of the feed liquid to the first sealing end 313 and the second sealing end 513 to pollute the environment.

[0094] In this embodiment, there are multiple first side openings 312, the total area of ​​the multiple first side openings 312 is S1, the cross-sectional area of ​​the first hollow cavity 311 is S2, and S1>S2 is satisfied between S1; there are multiple second side openings 512, the total area of ​​the multiple second side openings 512 is S3, the cross-sectional area of ​​the second hollow cavity 511 is S4, and S3>S4 is satisfied between S3 and S4; the feed liquid is promoted to quickly pass through the first side opening 312 and the second side opening 512 from the first hollow cavity 311 to the second hollow cavity 511, thereby realizing the rapid transfer of the feed liquid between the first connector 1 and the first connector 2, and avoiding the feed liquid staying in the disconnector for a long time and difficulty in ensuring sterility.

[0095] In order to facilitate the rapid convergence and dispersion of the feed liquid, accelerate the rapid transfer of the feed liquid, increase the transfer rate of the feed liquid, further reduce the residence time of the feed liquid in the disconnector, and ensure good sterility, the first side opening 312 is coaxially arranged with the first hollow cavity 311, and the end of the first side opening 312 smoothly transitions to the inner wall of the first hollow cavity 311; the second side opening 512 is coaxially arranged with the second hollow cavity 511, and the end of the second side opening 512 smoothly transitions to the inner wall of the second hollow cavity 511.

[0096] In order to quickly guide the liquid in the first hollow cavity 311 to the first side opening 313, the side of the first sealing end 313 away from the second sealing end 513 is tapered, thereby forming a guide surface 3132 to guide the liquid to the multiple first side openings 313 in the circumferential direction. Similarly, the side of the second sealing end 513 away from the first sealing end 313 can also be tapered, thereby forming a guide surface to converge the liquid flowing into the multiple second side openings 512 into the second hollow cavity 511, and then the liquid in the second hollow cavity 511 is quickly guided to the outlet side; in summary, the tapered structure speeds up the transfer of the liquid between the first connector 1 and the second connector 2. The guide surface of the first sealing end 313 and the guide surface of the second sealing end 513 can exist at the same time or separately, and there is no specific limitation.

[0097] like Figure 7 and Figure 8 As shown, when the first connector 1 and the second connector 2 switch from the connected state to the disconnected state, as the first connector 1 and the second connector 2 separate in a direction away from each other, the abutment between the first valve sleeve 32 and the second valve sleeve 52 is cancelled and they move toward each other, the pressure between the first elastic driving member 4 and the second elastic driving member 6 disappears. As the first elastic driving member 4 returns to its natural state and stretches, it pushes the first valve sleeve 32 to seal the first side opening 312. The second elastic driving member 6 resumes its natural stretch, pushing the second valve sleeve 52 to seal the second side opening 512, and the flow channel 8 is disconnected. At this time, the flow path of the first valve assembly 3 remains isolated from the first gap 71, and the flow path of the second valve assembly 5 remains isolated from the second gap 72. That is, the feed liquid does not contact the first elastic driving member 4 and the second elastic driving member 6, thereby maintaining the sterility and cleanliness of the feed liquid.

[0098] To ensure that the first valve sleeve 32 effectively seals the first side opening 312, a first sealing portion 92 is defined between the first valve sleeve 32, the first body 31, and the first sealing end 313. An elastic sealing member is provided at the first sealing portion 92. Specifically, in this embodiment, the first sealing portion 92 is defined between one end of the first valve sleeve 32 and the outer wall of the first body 31, and between the other end of the first valve sleeve 32 and the first sealing end 313.

[0099] To ensure that the second valve sleeve 52 effectively seals the second side opening 512, a second sealing portion 93 is defined between the second valve sleeve 52, the second body 51, and the second sealing end 513. A resilient sealing member is provided at this second sealing portion 93. Specifically, in this embodiment, the second sealing portion 93 is defined between one end of the second valve sleeve 52 and the outer wall of the second body 51, and between the other end of the second valve sleeve 52 and the second sealing portion 93.

[0100] A connecting piece 9 is also provided between the first valve sleeve 32 and the second valve sleeve 52. When the first connector 1 and the second connector 2 are in a connected state, the first sealing end 313 and the second sealing end 513 are located in the connecting piece 9, and the connecting piece 9 is located in the first shell 11 and the second shell 21; when the first connector 1 and the second connector 2 are in a disconnected state, the connecting piece 9 is located outside the first shell 11 and the second shell 21 for receiving the feed liquid.

[0101] Specifically, in this embodiment, the connecting member 9 is integrally connected to the second valve sleeve 52 and extends axially in the direction of the first valve sleeve 32. Of course, in other embodiments, the connecting member 9 can also be integrally connected to the first valve sleeve 32 and extend axially in the direction of the second valve sleeve 52. In order to ensure the sealing cooperation between the connecting member 9 and the first valve assembly 3 when the first connector 1 and the second connector 2 are connected, the connecting member 9 and the first valve sleeve 32 are at least partially overlapped in the axial direction, thereby forming an overlapping sealing area 91 surrounding the axial direction (see back). Figure 4 ); When the flow path between the first connector 1 and the second connector 2 is connected, the end of the connector 9 and the first valve sleeve 32 that is close to each other is tightly pressed and sealed. At this time, the end of the connector 9 and the first valve sleeve 32 that is close to each other overlaps with each other, forming an overlapping sealing area 91 that surrounds the axis. The overlapping sealing area 91 here is set as a complete circle around the axis, which has a good sealing effect and prevents leakage of the first valve sleeve 32 and the second valve sleeve 52 at the connection position due to the pressure of the liquid. Of course, in other embodiments, the overlapping sealing area 91 can also be set as a multi-circle structure, which has a high structural strength and a better sealing effect.

[0102] like Figure 5-10 As shown, in order to reduce the overall volume of the disconnector, while ensuring that an effective overlapping sealing area 91 is formed between the first valve sleeve 32 and the connecting piece 9, when the first valve assembly 3 and the second valve assembly 5 push each other, the first valve sleeve 32 can move smoothly in the axial direction, and a portion of the first valve sleeve 32 protrudes toward the central axis of the first main body 31 to form a first convex position 321. A first concave position 314 is formed in the axial direction at the first side opening 312 of the first main body 31, and the first convex position 321 can move axially in the first concave position 314.

[0103] A first latching position 3131 is provided on the outer periphery of the first sealing end 313 . When the first valve sleeve 32 seals and blocks the first side opening 312 , the first protrusion 321 seals and cooperates with the first latching position 3131 to form part of the first sealing position 92 .

[0104] Similarly, a portion of the second valve sleeve 52 protrudes toward the central axis of the second body 51 to form a second convex portion 521 , and a second concave portion 514 is axially formed in the second body 51 corresponding to the second side opening 512 , and the second convex portion 521 can move axially in the second concave portion 514 .

[0105] A second latching position 5131 is provided on the outer periphery of the second sealing end 513 . When the second valve sleeve 52 seals and blocks the second side opening 512 , the second protrusion 521 seals and cooperates with the second latching position 5131 to form part of the above-mentioned second sealing position 93 .

[0106] To ensure axial movement of the first valve sleeve 32 relative to the first housing 11, specifically axial movement of the first valve sleeve 32 within the first housing 11, a guide stopper is provided between the inner wall of the first housing 11 and the outer wall of the first valve sleeve 32. This limits circumferential rotation of the first valve sleeve 32 and the first housing 11, thereby achieving a non-rotating engagement between the first valve sleeve 32 and the first housing 11. In this embodiment, the guide stopper includes a slide groove 113 provided on the inner wall of the first housing 11 and a slider 322 provided on the outer wall of the first valve sleeve 32. The slider 322 protrudes radially outward from the first valve sleeve 32 and slidably connects axially within the slide groove 113. In addition to the slider 322, an annular ridge 323 is also formed on the outer wall of the first valve sleeve 32, connecting the multiple sliders 322 into a single entity. The annular ridge 323 can also abut against the first elastic driving member 4. Specifically, there are multiple guide and stop members. That is, the inner wall of the first housing 11 is provided with a plurality of slide grooves 113 at intervals. The annular protrusion 323 integrally connects a number of sliders 322 spaced apart to match the number of slide grooves 113. The guide and stop member structure between the inner wall of the second housing 21 and the outer wall of the second valve sleeve 52 is the same as that described above and will not be further described.

[0107] like Figure 12-15 As shown, the first housing 11 is provided with a first stopper 111, and the second housing 21 is provided with a second stopper 211. When the first connector 1 and the second connector 2 are in a connected state, the first stopper 111 and the second stopper 211 are in an axial limit zone, thereby limiting the axial movement of the first housing 11 and the second housing 21. The first stopper 111 and the second stopper 211 can be any stopper structure that can be implemented by those skilled in the art, as long as they can ensure that they can stop each other in the axial limit zone to limit the axial movement of the first housing 11 and the second housing 21.

[0108] In this embodiment, the end of the first housing 11 close to the second housing 21 has a connecting surface 114, and the end of the first housing 11 close to the second housing 21 extends axially to form a connecting ring 110. The first limiting member 111 is formed by the end of the connecting ring 110 away from the connecting surface 114 radially protruding toward the axial direction of the first housing 11. A single first limiting member 111 is an arc segment extending along the circumferential direction, and a limiting gap 115 extending along the circumferential direction is provided between the first limiting member 111 and the connecting surface 114. There are multiple first limiting members 111, and accordingly, there are multiple limiting gaps 115. Figure 14、 Figure 15 As shown, the second limiting member 211 is formed on the outer wall of the second housing 21 at one end near the first housing 11. The number of second limiting members 211 matches the number of first limiting members 111. Each second limiting member 211 is a radially protruding arc segment extending circumferentially relative to the outer wall of the second housing 21. When the first housing 11 and the second housing 21 are assembled and connected, as the circumferential rotation occurs, the second limiting member 211 falls into the limiting gap 115 and is blocked in the axial direction by the first limiting member 111, thereby achieving axial limiting of the first housing 11 and the second housing 21. Once a portion of the second limiting member 211 enters the limiting gap 115, the first limiting member 111 and the second limiting member 211 are in the axial limiting zone, and the second limiting member 211 does not need to fall completely into the limiting gap 115.

[0109] The first housing 11 is provided with a third limiting member 112, and the second housing 21 is provided with a fourth limiting member 212. As the first housing 11 and the second housing 21 are connected in a circumferential rotation, the third limiting member 112 and the fourth limiting member 212 are located in the circumferential limiting zone, thereby limiting the circumferential movement of the first housing 11 and the second housing 21. At this time, the first limiting member 111 and the second limiting member 211 are located in the axial limiting zone. The mutual stopping of the first limit member 111 and the second limit member 211 needs to rely on the third limit member 112 and the fourth limit member 212 to stop each other. Therefore, the first limit member 111 and the second limit member 211 first form a stopping effect, and then the third limit member 112 and the fourth limit member 212 play a double stopping role to prevent the first connector 1 and the second connector 2 from separating and disengaging along their circumferential directions. When the first shell 11 and the second shell 21 are in the circumferential limit area while also in the axial limit area, they play a double limiting role to ensure the stable connection between the first shell 11 and the second shell 21; the third limit member 112 and the fourth limit member 212 not only prevent circumferential rotation, but also prevent the first shell 11 and the second shell 21 from being pulled apart axially.

[0110] In this embodiment, the connecting ring 110 of the first housing 11 is recessed in the direction away from the axis of the first housing 11 to form a third limiting member 112. In other words, the third limiting member 112 is formed between adjacent limiting gaps 115. The third limiting member 112 is an arc segment extending along the circumferential direction and includes two end points 1121. Its axial thickness is greater than the axial thickness of the first limiting member 111. Figure 15 As shown, the fourth limiting member 212 is formed below the second limiting member 211 (with Figure 14When the second limiting member 211 is completely within the limiting gap 115 and is blocked in the axial direction by the first limiting member 111, the fourth limiting member 212 abuts against the two end points 1121 of the third limiting member 112, preventing the first and second housings 11 and 21 from further circumferential rotation.

[0111] When the first housing 11 and the second housing 21 are assembled and connected, the third limiting member 112 and the fourth limiting member 212 are connected by sliding movement around the first body 31, and the central angle of the movement path corresponding to the sliding connection of the two to the circumferential limiting area is 30-60 degrees, that is, Figure 13 The middle α angle is 30-60°, preferably 45°. If the circumferential rotation angle of the third limiter 112 and the fourth limiter 212 is too large, the rotation distance is too long, the flow path is difficult to be quickly disconnected in a short time, and the sterility is difficult to ensure; if the circumferential rotation angle is too small, there is little contact between the third limiter 112 and the fourth limiter 212, and it is difficult to ensure the connection firmness and stability between the first shell 11 and the second shell 21. Such an angle setting can take into account the problems of quick disconnection and connection stability, and can ensure quick disconnection, ensure the sterility and purity of the feed liquid, and at the same time ensure that the first shell 11 and the second shell 21 are firmly connected, and are not easily adversely affected by external vibration or shaking or human misoperation, thereby ensuring sterility in the connected state.

[0112] In order to further ensure the stability of the connection between the first housing 11 and the second housing 21, a removable limiting strip (not shown in the figure) can be provided at the joint between the two. The removable limiting strip can be an adhesive strip, or a component that cooperates with the first limiting member 111 and the second limiting member 211 to further secure the joint between the first limiting member 111 and the second limiting member 211, thereby preventing the first and second limiting members 111, 211 from rotating due to misoperation and causing the first connector 1 and the second connector 2 to separate.

[0113] Example 2

[0114] like Figures 16-21 As shown, in this embodiment, the connector 9 is divided into two parts, and the two parts are respectively connected to the ends of the first valve sleeve 32 and the second valve sleeve 52 that are close to each other. At this time, the first connector 1 and the second connector 2 have the same structure, which is easy to process and manufacture.

[0115] Specifically, the first part of the connecting member 9 is integrally connected to the first valve sleeve 32, and the first part of the connecting member 9 extends axially from the first convex position 321 of the first valve sleeve 32 toward the second valve sleeve 52. The second part of the connecting member 9 is integrally connected to the second valve sleeve 52. Under the push of the first elastic driving member 4 and the second elastic driving member 6, the end faces of the first and second parts of the connecting member 9 that are close to each other are sealed against each other.

[0116] In this case, the overlapping sealing area 91 structure in the first embodiment may not be provided, and other structures are the same as those in the first embodiment and will not be described in detail.

[0117] Example 3

[0118] like Figure 23-Figure 28 As shown, in this embodiment, the connecting member 9 is separately provided from the first valve sleeve 32 and the second valve sleeve 52 , that is, the connecting member 9 is neither connected to the first valve sleeve 32 nor to the second valve sleeve 52 , and is an independent component.

[0119] The inner wall of the connecting member 9 is provided with a plurality of limiting ribs 94 at intervals along the circumferential direction. When the connecting member 9 is assembled and connected with the first valve sleeve 32 and the second valve sleeve 52, the end face of the first convex position 321 of the first valve sleeve 32 abuts against one end of the limiting rib 94, and the end face of the second convex position 521 of the second valve sleeve 52 abuts against the other end of the limiting rib 94, that is, the ends of the first valve sleeve 32 and the second valve sleeve 52 that are close to each other abut against the two ends of the limiting rib 94 respectively, so as to press the first elastic driving member 4 and the second elastic driving member 6 into a compressed state respectively.

[0120] At this time, the first valve sleeve 32 and the inner wall of the connecting member 9 also form a first sealing position 92, and the second valve sleeve 52 and the inner wall of the connecting member 9 also form a second sealing position 93. At this time, the overlapping sealing area 91 structure in the first embodiment can be omitted.

[0121] In this embodiment, the first housing 1 and the second housing 21 are connected via a limiting bar.

[0122] The other structures are the same as those in the first embodiment and will not be described in detail.

[0123] The above specific embodiments are used to illustrate the present invention rather than to limit the present invention. Any modifications and changes made to the present invention within the spirit of the present invention and the protection scope of the claims shall fall within the protection scope of the present invention.

Claims

1. A disposable sterile disconnector, comprising: A first connector comprising a first housing, a first valve assembly and a first elastic drive member; The second connector is detachably connected to the first connector and comprises a second housing, a second valve assembly and a second elastic drive member; characterized in that: A first gap is defined between the first housing and the first valve assembly to accommodate the first elastic driving member and provide space for axial expansion and contraction thereof. The first valve assembly comprises at least a first body and a first valve sleeve. The first body has a first hollow cavity and a first side opening communicating with the first hollow cavity. The first valve sleeve is movably sleeved on the outer side of the first body to form the first gap between the first body, the first valve sleeve, and the first housing. A second gap is defined between the second housing and the second valve assembly to accommodate the second elastic driving member and provide space for its axial expansion and contraction. The second valve assembly comprises at least a second body and a second valve sleeve. The second body has a second hollow cavity and a second side opening communicating with the second hollow cavity. The second valve sleeve is movably sleeved on the outer side of the second body to form the second gap between the second body, the second valve sleeve and the second housing. The first connector and the second connector have a connected state and a separated state. When in the connected state, the flow path of the first valve assembly is connected to the flow path of the second valve assembly to form a flow channel for the feed liquid, and the flow channel is isolated from the first gap and the second gap at the same time, ensuring that the feed liquid does not contact the first elastic driving member and the second elastic driving member, and the first elastic driving member and the second elastic driving member are both in a compressed state; When in a separated state, the flow channel between the first valve assembly and the second valve assembly is disconnected to prevent the flow of the liquid, and the flow path of the first valve assembly is isolated from the first gap, and the flow path of the second valve assembly is isolated from the second gap, and the first elastic driving member and the second elastic driving member are both in an extended state.

2. The disposable sterile disconnector according to claim 1, characterized in that: When the first connector and the second connector are switched from a connected state to a separated state, the first elastic driving member stretches to push the first valve sleeve to seal and block the first side opening, and the second elastic driving member stretches to push the second valve sleeve to seal and block the second side opening, and the flow channel is disconnected.

3. The disposable sterile disconnector according to claim 2, characterized in that: The first body has a first sealing end for blocking one end of the first hollow cavity, and the second body has a second sealing end for blocking one end of the second hollow cavity; A connecting piece is provided between the first valve sleeve and the second valve sleeve. When the first connector and the second connector are in a connected state, the first sealing end and the second sealing end are enclosed in the connecting piece, and the connecting piece is located inside the first shell and the second shell. When the first connector and the second connector are in a disconnected state, the connecting member is located outside the first shell and the second shell and is used to receive the feed liquid; The connecting member is integrally connected to the first valve sleeve or the second valve sleeve; or, the connecting member is divided into two parts, and is respectively connected to one end of the first valve sleeve and the second valve sleeve that are close to each other; or, the connecting member is separately arranged from the first valve sleeve and the second valve sleeve.

4. The disposable sterile disconnector according to claim 3, characterized in that: The connecting member overlaps with at least part of the first valve sleeve and / or the second valve sleeve in the axial direction to form an overlapping sealing area, which is arranged around the axis and extends along the axial direction.

5. The disposable sterile disconnector according to claim 3, characterized in that: When the first valve sleeve seals and blocks the first side opening, a first sealing position is formed between the first valve sleeve, the first body, and the first sealing end; When the second valve sleeve seals and blocks the second side opening, a second sealing position is formed between the second valve sleeve, the second body and the second sealing end; The first sealing position and the second sealing position are both provided with elastic sealing members.

6. The disposable sterile disconnector according to claim 3, characterized in that: A portion of the first valve sleeve protrudes toward the central axis of the first body to form a first convex portion, and a first concave portion is formed axially on the first body corresponding to the first side opening. The first convex portion is axially movable within the first concave portion. A first latching position is provided on the outer periphery of the first sealing end, and when the first valve sleeve seals and blocks the first side opening, the first protruding position seals and cooperates with the first latching position; A portion of the second valve sleeve protrudes toward the central axis of the second body to form a second convex portion, and a second concave portion is formed axially on the second body corresponding to the second side opening. The second convex portion is axially movable within the second concave portion. A second clamping position is provided on the outer periphery of the second sealing end. When the second valve sleeve seals and blocks the second side opening, the second protruding position seals and cooperates with the second clamping position.

7. The disposable sterile disconnector according to claim 3, characterized in that: When the first connector and the second connector are in a connected state, the first sealing end and the second sealing end are in contact.

8. The disposable sterile disconnector according to claim 3, characterized in that: The side of the first sealing end and / or the second sealing end that is away from each other is tapered to form a guiding surface.

9. The disposable sterile disconnector according to claim 2, characterized in that: There are multiple first side openings, the total area of ​​the multiple first side openings is S1, the cross-sectional area of ​​the first hollow cavity is S2, and S1>S2 is satisfied between S1 and S2; or / and, there are multiple second side openings, the total area of ​​the multiple second side openings is S3, the cross-sectional area of ​​the second hollow cavity is S4, and S3>S4 is satisfied between S3 and S4.

10. The disposable sterile disconnector according to claim 2, characterized in that: The first side opening is coaxially arranged with the first hollow cavity, and the end of the first side opening smoothly transitions to the inner wall of the first hollow cavity; or / and, the second side opening is coaxially arranged with the second hollow cavity, and the end of the second side opening smoothly transitions to the inner wall of the second hollow cavity.

11. The disposable sterile disconnector according to claim 1, characterized in that: The first shell is provided with a first limiting member, and the second shell is provided with a second limiting member. When the first connector and the second connector are in a connected state, the first limiting member and the second limiting member are in an axial limiting area to limit the axial movement of the first shell and the second shell.

12. The disposable sterile disconnector according to claim 11, characterized in that: A guide limiter is provided between the inner wall of the first shell and the outer wall of the first valve sleeve to limit the circumferential rotation of the first valve sleeve and the first shell, or / and a guide limiter is provided between the inner wall of the second shell and the outer wall of the second valve sleeve to limit the circumferential rotation of the second valve sleeve and the second shell.

13. The disposable sterile disconnector according to claim 12, characterized in that: The guide limiter comprises a slide groove provided on the inner wall of the first shell and a slider provided on the outer wall of the first valve sleeve, and the slider is connected to the slide groove in an axially sliding manner.

14. The disposable sterile disconnector according to claim 11, characterized in that: The first shell is provided with a third limit member, and the second shell is provided with a fourth limit member, which are connected with the circumferential rotation of the first shell and the second shell until the third limit member and the fourth limit member are in the circumferential limit zone to limit the circumferential movement of the first shell and the second shell. At this time, the first limit member and the second limit member are in the axial limit zone.

15. The disposable sterile disconnector according to claim 14, characterized in that: The third limiting member and the fourth limiting member are connected to each other in a circumferential sliding manner around the first main body, and the central angle of the moving path corresponding to the two limiting members when they are slidably connected to the circumferential limiting area is 30-60 degrees.

16. The disposable sterile disconnector according to claim 1, characterized in that: A removable limiting strip is provided at the junction of the first shell and the second shell.

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