CN116877813A

CN116877813A - Disposable sterile breaker

Info

Publication number: CN116877813A
Application number: CN202311052312.2A
Authority: CN
Inventors: 贾建东; 高杰; 陈杰帮
Original assignee: Hangzhou Cobetter Filtration Equipment Co Ltd
Current assignee: Hangzhou Cobetter Filtration Equipment Co Ltd
Priority date: 2023-08-20
Filing date: 2023-08-20
Publication date: 2023-10-13

Abstract

The invention discloses a disposable sterile disconnect, comprising a first connector comprising a first housing, a first valve assembly and a first elastic drive member; a second connector comprising a second housing, a second valve assembly, and a second resilient driver; a first gap is provided between the first housing and the first valve assembly for accommodating the first resilient driver; a second gap is provided between the second housing and the second valve assembly for accommodating a second resilient driver; the first connector and the second connector are in a communication state, flow paths of the first valve assembly and the second valve assembly are communicated to form a flow channel for feeding liquid to flow, and the flow channel is simultaneously isolated from the first gap and the second gap; when the valve is in a separation state, a flow channel between the first valve component and the second valve component is disconnected to prevent the flow of feed liquid, and the flow channel of the first valve component is isolated from a first gap, and the flow channel of the second valve component is isolated from a second gap; the first elastic driving piece and the second elastic driving piece of the invention can not be in direct contact with the feed liquid, so that the sterility and the cleanliness of the feed liquid are maintained.

Description

Disposable sterile breaker

Technical Field

The invention belongs to the technical field of fluid coupling, and particularly relates to a disposable sterile disconnect.

Background

Biological fluid bags (e.g., sampling bags, stirred bags, or bioreactor bags, etc.) may include fluid transfer systems consisting of multiple pipes, pumps, containers, fittings, couplings, heat exchangers, sensors, filters, valves, seals, etc., for the ingress and egress of fluids and for the transport of fluids. In order to maintain sterility, the biological fluid bag is usually a disposable closed system, and after the exchange of the fluid in the biological fluid bag is completed, the interior of the biological fluid bag needs to be disconnected from the exterior in time so as to maintain the sterility of the environment in the biological fluid bag; therefore, it is usually implemented using a disconnector.

The current breaker structure with wide market application comprises two parts which are matched with each other, according to the structure disclosed in CN1035898C, the tip of the valve core and the tip of the valve core are mutually propped against each other to be matched, so that backward force is mutually exerted to open a fluid passage between the male connector and the female connector, and at the moment, the metal springs of the valve cores at the two sides are in a compressed state; because the metal springs of the valve cores at two sides are in direct contact with the feed liquid, when the metal springs are irradiated, rust is easy to generate, and the risk of polluting the feed liquid exists.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides a disposable sterile breaker which can achieve the effect of avoiding the pollution of feed liquid caused by the direct contact of an elastic driving piece and the feed liquid.

The technical scheme adopted for solving the technical problems is as follows:

a disposable sterile disconnect comprising:

a first connector comprising a first housing, a first valve assembly, and a first resilient driver;

a second connector detachably connected to the first connector, comprising a second housing, a second valve assembly, and a second elastic driving member;

a first gap is formed between the first housing and the first valve assembly to accommodate the first resilient driver and provide space for axial expansion thereof;

a second gap is formed between the second housing and the second valve assembly to accommodate the second elastic driving member and provide an axial expansion space thereof;

the first connector and the second connector are in a communicating state and a separating state, when the first connector and the second connector are in the communicating state, a flow channel for flowing feed liquid is formed by communicating the flow channel of the first valve assembly with the flow channel of the second valve assembly, the flow channel is simultaneously isolated from the first gap and the second gap, and the first elastic driving piece and the second elastic driving piece are both in a compressed state; when the first elastic driving piece and the second elastic driving piece are in an extending state, a flow channel between the first valve component and the second valve component is disconnected to prevent feed liquid from flowing, the flow channel of the first valve component is isolated from a first gap, the flow channel of the second valve component is isolated from a second gap, and the first elastic driving piece and the second elastic driving piece are in an extending state.

By adopting the technical scheme, the first gap in the disposable sterile breaker is positioned between the first shell and the first valve component, the first elastic driving piece is positioned in the first gap, the second gap is positioned between the second shell and the second valve component, and the second elastic driving piece is positioned in the second gap, namely, the first elastic driving piece and the second elastic driving piece are not in direct contact with feed liquid; meanwhile, the first gap and the second gap are both free of blocking parts, so that the first elastic driving part and the second elastic driving part can extend and compress along the axial direction without blocking in the first gap and the second gap respectively; along with the connection between the first connector and the second connector, the first elastic driving piece and the second elastic driving piece are compressed, the flow paths between the first connector and the second connector are communicated, flow paths are formed for the flow of the liquid, and the liquid is not contacted with the first elastic driving piece and the second elastic driving piece due to the isolation between the flow paths and the first gap and the second gap, so that the risk of pollution caused by the contact of the liquid with the elastic driving piece is avoided; when the first connector and the second connector are separated, the first elastic driving piece and the second elastic driving piece stretch, a flow passage between the first connector and the second connector is disconnected, and feed liquid cannot flow between the first valve assembly and the second valve assembly, at the moment, the flow passage in the first connector, the first elastic driving piece, the flow passage in the second connector and the second elastic driving piece still keep a mutually isolated state, namely, the first elastic driving piece and the second elastic driving piece cannot be in direct contact with the feed liquid, so that the sterility and the cleanliness of the feed liquid are maintained; the first connector and the second connector may have the same or different structures.

Further, the first valve assembly at least comprises a first main body and a first valve sleeve, the first main body is provided with a first hollow cavity and a first side opening communicated with the first hollow cavity, and the first valve sleeve is movably sleeved on the outer side of the first main body so as to form the first gap among the first main body, the first valve sleeve and the first shell;

the second valve assembly at least comprises a second main body and a second valve sleeve, the second main body is provided with a second hollow cavity and a second side opening communicated with the second hollow cavity, and the second valve sleeve is movably sleeved on the outer side of the second main body so as to form a second gap among the second main body, the second valve sleeve and the second housing;

when the first connector and the second connector are switched from the communicating state to the separating state, the first elastic driving piece stretches to push the first valve sleeve to seal and block the first side opening, the second elastic driving piece stretches to push the second valve sleeve to seal and block the second side opening, and the flow channel is disconnected.

By adopting the technical scheme, the motion process is as follows: when the feed liquid is transferred between the first connector and the second connector, the first connector and the second connector are in a communication state, at the moment, the first shell and the second shell are abutted, one ends of the first valve sleeve and the second valve sleeve, which are close to each other, are abutted against each other, and are in a sealing connection state axially, at the moment, the flow channel is in a sealed state and is isolated from the first gap and the second gap, the first elastic driving piece and the second elastic driving piece are in a compressed state, the first valve sleeve is forced to be separated from the first side opening, the second valve sleeve is separated from the second side opening, and 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; when the first connector and the second connector are in a separated state, the first valve sleeve and the second valve sleeve move in directions approaching each other along with the separation of the first connector and the second connector in directions tending to separate from each other, the abutting between the first valve sleeve and the second valve sleeve is removed, meanwhile, the compression between the first elastic driving piece and the second elastic driving piece is also removed, and the first valve sleeve is pushed to seal the first side opening and the second valve sleeve is pushed to seal the second side opening respectively along with the process that the first elastic driving piece and the second elastic driving piece are restored to a natural extension state, and a flow path between the first side opening and the second side opening is disconnected; the first side opening and the second side opening are respectively sealed through the axial movement of the single simple part serving as a sealing element, namely the first valve sleeve and the second valve sleeve, compared with the mode that the first side opening and the second side opening are sealed through the movement of other complex parts or a plurality of parts, the first valve sleeve and the second valve sleeve are simple in structure and smooth in movement process, the problem that the first valve sleeve and the second valve sleeve do not reach a sealing position due to the fact that clamping or insufficient pushing force occurs in the movement process is avoided, and the accuracy and precision of the sealing process are reduced, so that the sealing effect of the first side opening and the second side opening is invalid. In addition, as the first elastic driving piece surrounds the outer peripheral surface of the first main body with the first hollow cavity, the second elastic driving piece surrounds the outer peripheral surface of the second main body with the second hollow cavity, and when the first connector is connected with 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 feed liquid flows in a sealed space isolated from the first elastic driving piece and the second elastic driving piece and cannot contact with the first elastic driving piece and the second elastic driving piece, the risk that the elastic driving piece contacts the feed liquid to pollute the feed liquid is avoided, and the sterility and the cleanliness of the feed liquid are maintained.

Further, the first main body is provided with a first sealing end for sealing one end of the first hollow cavity, and the second main body is provided with a second sealing end for sealing one end of the second hollow cavity;

a connecting piece is arranged between the first valve sleeve and the second valve sleeve, when the first connector and the second connector are in a communicating state, the first sealing end and the second sealing end are enclosed in the connecting piece, and the connecting piece is positioned in the first shell and the second shell; when the first connector and the second connector are in a disconnected state, the connecting piece is positioned outside the first shell and the second shell and is used for receiving feed liquid;

the connecting piece is integrally connected with the first valve sleeve or the second valve sleeve; or the connecting piece is divided into two parts and is respectively connected with one end of the first valve sleeve and one end of the second valve sleeve, which are close to each other; alternatively, the connector is provided separately from the first and second valve housings.

By adopting the technical scheme, the arrangement of the first sealing end and the second sealing end ensures that feed liquid in the first hollow cavity and the second hollow cavity is isolated from the first elastic driving piece and the second elastic driving piece; because the first valve sleeve, the connecting piece and the second valve sleeve are integrally and directly contacted with the feed liquid when the flow paths between the first connector and the second connector are communicated, the connecting piece surrounds the peripheries of the first sealing end and the second sealing end, and the feed liquid is prevented from leaking, so that the feed liquid is prevented from being contacted with the first elastic driving piece and the second elastic driving piece, and the sterility and the cleanliness of the feed liquid are ensured; when the flow path between the first connector and the second connector is disconnected, the elastic driving piece moves towards the stretching state to push the first valve sleeve, the connecting piece and the second valve sleeve to move towards the approaching direction to seal the first side opening and the second side opening, so that one connecting piece is connected to one of the first valve sleeve or the second valve sleeve, the inner surface of the connecting piece at the part where the first valve sleeve and the second valve sleeve are close to each other can receive feed liquid, the residual feed liquid is prevented from being scattered randomly when the first connector and the second connector are disconnected, and the feed liquid is prevented from leaking to pollute the external environment; the structures of the first main body and the second main body can be the same or different, when the structures of the first main body and the second main body are the same, the connecting piece is divided into two parts, the two parts are respectively connected with the end parts of the first valve sleeve and the second valve sleeve, which are close to each other, integrally, the two parts of the connecting piece are respectively used for receiving residual feed liquid of the first connector and residual feed liquid of the second connector, the feed liquid receiving effect is better, the structures of the two parts of the connecting piece are the same, and the butting precision is high; or the connecting piece is an independent part which is not connected with the first valve sleeve and the second valve sleeve, and can also receive the residual feed liquid of the first connector and the residual feed liquid of the second connector when the connecting piece is disassembled, so that the connecting piece is convenient to disassemble and assemble, and different types of connecting pieces can be selected according to different use conditions; 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 the second valve sleeve, at the moment, the connecting piece can relatively more effectively receive residual feed liquid in one of the first connector and the second connector, and of course, the connecting piece can also relatively incline when the first connector and the second connector are disconnected, so that the residual feed liquid in the connector without the connecting piece flows to the connecting piece.

Further, the connector axially overlaps at least a portion of the first valve sleeve or/and the second valve sleeve to form an overlapping seal disposed about the axis and extending in the axial direction.

Through adopting above-mentioned technical scheme, when the flow path intercommunication between first connector and the second connector, the connecting piece forms the overlap seal district with the one end that the valve pocket is close to each other, and sealed effect is better for both junction can bear great pressure, avoids the junction to take place to leak, and the overlap seal district of here encircles the axis and sets up complete round, also can be complete multiturn certainly, its structural strength is high, sealed effectual, avoids first valve pocket and second valve pocket to take place to leak because of receiving the feed liquid pressure in hookup location department.

Further, when the first valve sleeve seals and plugs the opening of the first side, a first sealing position is arranged among the first valve sleeve, the first main body and the first sealing end;

when the second valve sleeve seals and plugs the second side opening, a second sealing position is arranged among the second valve sleeve, the second main body and the second sealing end;

the first sealing position and the second sealing position are respectively provided with an elastic sealing piece.

By adopting the technical scheme, as the first main body and the first valve sleeve are injection molding pieces, the sealing form between the elastic sealing piece and the injection molding pieces can seal the sealing position along with the deformation of the elastic sealing piece relative to the sealing form of the contact between rigid materials between the injection molding pieces, so that the sealing effect is good, and leakage is avoided; the arrangement of a plurality of first sealing positions ensures effective sealing between the first main body and the first valve sleeve, particularly between the first main body and the two axial ends of the first side opening, so that the leakage of feed liquid in the first connector is avoided when the first connector and the second connector are disconnected; the second main body and the second valve sleeve are injection molding pieces, and the sealing mode between the elastic sealing piece and the injection molding pieces can seal the sealing position along with the deformation of the elastic sealing piece relative to the sealing mode of contact between rigid materials between the injection molding pieces, so that the sealing effect is good, and leakage is avoided; the arrangement of a plurality of second sealing positions ensures effective sealing between the second main body and the second valve sleeve, especially between the two axial ends of the opening at the first side, and avoids the leakage of feed liquid in the second connector when the first connector and the second connector are disconnected.

Further, a part of the first valve sleeve protrudes towards the central axis direction of the first main body to form a first convex position, a first concave position is formed at the position, corresponding to the opening of the first side, of the first main body along the axial direction, and the first convex position can axially move in the first concave position;

the periphery of the first sealing end is provided with a first clamping position, and when the first valve sleeve seals and plugs the opening of the first side, the first protruding position is in sealing fit with the first clamping position;

the part of the second valve sleeve protrudes towards the central axis direction of the second main body to form a second convex position, a second concave position is formed at the position of the second main body corresponding to the second side opening along the axial direction, and the second convex position can axially move in the second concave position;

and a second clamping position is arranged on the periphery of the second sealing end, and when the second valve sleeve seals and plugs the second side opening, the second protruding position is in sealing fit with the second clamping position.

By adopting the technical scheme, 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 are matched to realize the fluid connection and the fluid disconnection between the first connector and the second connector, wherein the thicknesses 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, and the thickness uniformity and the good sealing performance of a workpiece in the injection molding process are considered; the whole volume of the breaker can also be reduced through the structural arrangement, and under the condition that an effective overlapped sealing area is formed between the first valve sleeve and the connecting piece, when the first valve assembly and the second valve assembly are pushed mutually, the first valve sleeve can smoothly translate along the axial direction.

Further, when the first connector and the second connector are in a communicating state, the first sealing end and the second sealing end point are in contact.

By adopting the technical scheme, when the first sealing end and the second sealing end are contacted, the flow path between the first connector and the second connector is communicated, and in the process of flowing the feed liquid to the second side opening through the first side opening, the feed liquid can be directly contacted with the first sealing end and the second sealing end, so that one side, close to each other, of the first sealing end and the second sealing end is attracted together under the action of the surface tension of the liquid, and 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 that first sealed end and second sealed end are close to each other is the point contact, and area of contact between first sealed end and the second sealed end is minimum, consequently can be in the short time by the quick quilt, avoid the feed liquid to expose and be polluted, perhaps avoid too much exempt from the feed liquid to adhere to on first sealed end, second sealed end, leak outside when separating along with first sealed end and second sealed end and pollute the environment etc..

Further, the side of the first sealing end or/and the second sealing end, which is far away from each other, is in a cone shape so as to form a guiding surface.

By adopting the technical scheme, one side of the first sealing end far away from the second sealing end is conical, so that a guide surface is formed to guide feed liquid to a plurality of first side openings in the circumferential direction, and the feed liquid in the first hollow cavity is quickly guided to the first side openings; likewise, the side of the second sealing end far away from the first sealing end can also be conical, so that a guiding surface is formed, and feed liquid flowing into a plurality of second side openings can be converged into the second hollow cavity, and then the feed liquid in the second hollow cavity is quickly guided to the outlet side; in summary, the tapered structure accelerates the transfer of the feed liquid between the first connector and the second connector.

Further, the number of the first side openings is a plurality, the sum of the areas of the plurality of the first side openings is S1, the cross section area of the first hollow cavity is S2, and S1 is more than S2 between S1 and S2; or/and, the number of the second side openings is a plurality, the sum of the areas of the second side openings is S3, the cross section area of the second hollow cavity is S4, and S3 is more than S4 between S3 and S4.

By adopting the technical scheme, S1 represents the total transfer flux of the feed liquid through the openings on the first sides, S3 represents the total transfer flux of the feed liquid through the openings on the second sides, 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 is more than S2 or/and S3 is more than S4, the feed liquid is promoted to quickly pass through the first side opening and the second side opening from the first hollow cavity and be transferred into the second hollow cavity, so that the feed liquid is quickly transferred between the first connector and the second connector, and the situation that the stay time of the feed liquid in the breaker is long and the sterility is difficult to ensure is avoided.

Further, the first side opening and the first hollow cavity are coaxially arranged, and the end part of the first side opening and the inner wall of the first hollow cavity are in smooth transition; or/and, the second side opening and the second hollow cavity are coaxially arranged, and the end part of the second side opening and the inner wall of the second hollow cavity are in smooth transition.

By adopting the technical scheme, the rapid convergence and dispersion of the feed liquid are facilitated, the rapid transfer of the feed liquid is accelerated, the transfer rate of the feed liquid is improved, the residence time of the feed liquid in the breaker is further reduced, and good sterility is ensured.

Further, the first housing is provided with a first limiting member, the second housing is provided with a second limiting member, and when the first connector and the second connector are in a communicating state, the first limiting member and the second limiting member are in an axial limiting region so as to limit the axial movement of the first housing and the second housing.

By adopting the technical scheme, the first limiting piece and the second limiting piece can be any limiting piece structure which can be realized by a person skilled in the art, so long as the two limiting pieces can be ensured to realize mutual stop in an axial limiting area so as to limit the movement of the first shell and the second shell in the axial direction; the first limiting piece and the second limiting piece are mutually hooked, so that the first connector and the second connector are prevented from being separated and separated along the axis; the axial limiting area is an area range, and under the condition that the first connector and the second connector generate small-amplitude relative rotation, the first connector and the second connector cannot be completely disconnected, so that the connection stability of the first connector and the second connector is ensured.

Further, a guiding and limiting piece is arranged 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 guiding and limiting piece is arranged 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.

By adopting the technical scheme, the guide limiting piece between the first shell and the first valve sleeve can prevent the first valve sleeve from rotating circumferentially, ensure the accuracy of the first valve sleeve in axial translation, avoid circumferential offset, and limit the travel of the first valve sleeve in axial translation, so that the first elastic driving piece is limited to excessively axially stretch and the first valve sleeve excessively axially moves to prevent the first side opening from being closed; the guiding limiting piece between the second shell and the second valve sleeve can prevent the second valve sleeve from rotating circumferentially, ensure the accuracy of the second valve sleeve in axial translation, avoid circumferential offset, and limit the travel of the second valve sleeve in axial translation at the same time, so that the second elastic driving piece is limited to excessively axially stretch and excessively axially move to prevent the second valve sleeve from closing the second side opening.

Further, the guiding limiting piece comprises a sliding groove arranged on the inner wall of the first shell and a sliding block arranged on the outer wall of the first valve sleeve, and the sliding block is axially connected in the sliding groove in a sliding manner.

By adopting the technical scheme, the matching structure of the sliding block and the sliding groove is simple and effective, along with the sliding connection of the sliding block in the sliding groove, the first valve sleeve can only axially translate relative to the first shell, the second valve sleeve can only axially translate relative to the second shell, circumferential deflection cannot occur, axial movement of the first valve sleeve relative to the first shell is ensured, axial movement of the second valve sleeve relative to the second shell is ensured, shaking is not easy to occur, unstable connection state caused by misoperation or external vibration is avoided, and sterility in the connection state is ensured; the elastic driving piece can be abutted with the sliding block, so that the compression and extension strokes of the first elastic driving piece and the second elastic driving piece are limited by the matching of the sliding block and the sliding groove, and the elastic driving piece is prevented from being excessively extended.

Further, the first housing is provided with a third limiting member, the second housing is provided with a fourth limiting member, and the fourth limiting member is rotationally connected with the first housing and the second housing along with the circumferential direction until the third limiting member and the fourth limiting member are positioned in a circumferential limiting region so as to limit the circumferential movement of the first housing and the second housing, and at the moment, the first limiting member and the second limiting member are positioned in an axial limiting region.

By adopting the technical scheme, the mutual stop of the first limiting piece and the second limiting piece is needed to be performed by virtue of the third limiting piece and the fourth limiting piece, so that the first limiting piece and the second limiting piece firstly form a stop effect, then the third limiting piece and the fourth limiting piece play a double stop effect, the first connector and the second connector are prevented from being separated and separated along the circumferential direction, and when the first shell and the second shell are in circumferential limit, the first shell and the second shell are also in an axial limit area, the double limiting effect is achieved, and the stable connection of the first shell and the second shell is ensured; the third limiting piece and the fourth limiting piece prevent the first shell and the second shell from being pulled apart axially while preventing circumferential rotation.

Further, the third limiting piece and the fourth limiting piece are connected in a sliding mode around the first main body in the circumferential direction, and the central angle corresponding to the moving path in the sliding mode when the third limiting piece and the fourth limiting piece are connected to the circumferential limiting area is 30-60 degrees.

By adopting the technical scheme, the circumferential rotation angles of the third limiting piece and the fourth limiting piece are too large, the rotation path is too long, the flow path is difficult to be rapidly disconnected in a short time, and the sterility is difficult to be ensured; the circumferential rotation angle is too small, the contact between the third limiting part and the fourth limiting part is less, the connection firmness and stability between the first shell and the second shell are difficult to guarantee, the quick disconnection and connection firmness can be guaranteed due to the arrangement of the angle, the quick disconnection and the quick disconnection can be guaranteed, the sterility and the purity of feed liquid are guaranteed, meanwhile, the first shell and the second shell are guaranteed to be firmly connected, adverse effects are not easy to be caused due to external vibration or shaking or artificial misoperation, and the sterility under the connection state is guaranteed.

Further, a removable limit strip is arranged at the joint of the first shell and the second shell.

Through adopting above-mentioned technical scheme, removable spacing can be the sticky strip, or with first locating part and the part of second locating part mutually supporting, further fix the joint between first locating part and the second locating part, avoid the maloperation and make and rotate between first locating part and the second locating part and lead to first connector and second connector separation.

The beneficial effects of the invention are as follows:

1) In the disposable sterile breaker, the first elastic driving piece and the second elastic driving piece are not in direct contact with feed liquid; the first gap and the second gap are both free of blocking parts, so that the first elastic driving part and the second elastic driving part can extend and compress in the first gap and the second gap along the axial direction without blocking respectively; along with the connection between the first connector and the second connector, the first elastic driving piece and the second elastic driving piece are compressed, the flow paths between the first connector and the second connector are communicated, flow paths are formed for the flow of the liquid, and the liquid is not contacted with the first elastic driving piece and the second elastic driving piece due to the isolation between the flow paths and the first gap and the second gap, so that the risk of pollution caused by the contact of the liquid with the elastic driving piece is avoided; when the first connector and the second connector are separated, the first elastic driving piece and the second elastic driving piece stretch, a flow passage between the first connector and the second connector is disconnected, and feed liquid cannot flow between the first valve assembly and the second valve assembly, at the moment, the flow passage in the first connector, the first elastic driving piece, the flow passage in the second connector and the second elastic driving piece still keep a mutually isolated state, namely, the first elastic driving piece and the second elastic driving piece cannot be in direct contact with the feed liquid, so that the sterility and the cleanliness of the feed liquid are maintained;

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 communication state, at the moment, the first shell and the second shell are abutted, one ends of the first valve sleeve and the second valve sleeve, which are close to each other, are abutted against each other, are in a sealing connection state in the axial direction, the runner is in a sealed state, the first elastic driving piece and the second elastic driving piece are forced to be in a compressed state, the first valve sleeve is separated from the first side opening, the second valve sleeve is separated from the second side opening, and 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, when the first connector and the second connector tend to be separated in a direction away from each other, the abutting between the first valve sleeve and the second valve sleeve is removed, so that the compression between the first elastic driving piece and the second elastic driving piece is eliminated, the first valve sleeve and the second valve sleeve tend to move in a direction approaching to each other, the first elastic driving piece and the second elastic driving piece respectively push the first valve sleeve to seal the first side opening and the second valve sleeve to seal the second side opening in the process of restoring the natural extension state, and a flow path between the first side opening and the second side opening is disconnected; the first elastic driving piece surrounds the outer peripheral surface of the first main body with the first hollow cavity, the second elastic driving piece surrounds the outer peripheral surface of the second main body with the second hollow cavity, and the feed liquid flows in a sealed space isolated from the first elastic driving piece and the second elastic driving piece and cannot contact the first elastic driving piece and the second elastic driving piece, so that the risk that the elastic driving piece contacts the feed liquid to pollute the feed liquid is avoided, and the sterility and the cleanliness of the feed liquid are maintained;

3) When the flow paths between the first connector and the second connector are communicated, the first valve sleeve, the connecting piece and the second valve sleeve are in integral direct contact with feed liquid, the connecting piece surrounds the peripheries of the first sealing end and the second sealing end, and leakage of the feed liquid is avoided, so that the feed liquid is prevented from being in contact with the first elastic driving piece and the second elastic driving piece, and sterility and cleanliness of the feed liquid are ensured; when the flow path between the first connector and the second connector is disconnected, the elastic driving piece moves towards the stretching state to push the first valve sleeve, the connecting piece and the second valve sleeve to move towards the approaching direction to seal the first side opening and the second side opening, one connecting piece is connected to one of the first valve sleeve or the second valve sleeve, the inner surface of the connecting piece at the part where the first valve sleeve and the second valve sleeve are close to each other can receive feed liquid, and the phenomenon that residual feed liquid is scattered randomly when the first connector and the second connector are disconnected is avoided, and the feed liquid leakage is avoided to pollute the external environment.

Drawings

Fig. 1 is a perspective view of a disposable sterile disconnect according to a first embodiment of the present invention.

Fig. 2 is a perspective cross-sectional view of a first connector according to a first embodiment of the present invention.

Fig. 3 is a perspective cross-sectional view of a second connector according to a first embodiment of the present invention.

Fig. 4 is a cross-sectional view of a disposable sterile disconnect according to a first embodiment of the present invention, with the first connector and the second connector in a connected state.

Fig. 5 is a perspective cross-sectional view of a disposable sterile disconnect according to a first embodiment of the present invention, in which the first connector and the second connector are in a connected state.

Fig. 6 is a perspective cross-sectional view of a disposable sterile disconnect according to a first embodiment of the present invention, in which the first connector and the second connector are in a connected state, and the first housing and the second housing are omitted. Fig. 7 is a front view illustrating the first connector and the second connector according to the first embodiment of the present invention, wherein the first connector and the second connector are in a separated state.

Fig. 8 is a split cross-sectional view of a first connector and a second connector according to a first embodiment of the present invention, where the first connector and the second connector are in a separated state.

Fig. 9 is a schematic diagram of a mating structure of a first body and a second body in a disposable sterile breaker according to a first embodiment of the present invention.

Fig. 10 is a perspective view of a first valve housing in accordance with a first embodiment of the present invention.

Fig. 11 is a perspective view of a second valve housing in accordance with a first embodiment of the present invention.

Fig. 12 is a perspective view of a first housing according to a first embodiment of the present invention.

Fig. 13 is a top view of a first housing in accordance with a first embodiment of the present invention.

Fig. 14 is a perspective view of a second housing in accordance with a first embodiment of the present invention.

Fig. 15 is a front view of the second housing in accordance with the first embodiment of the present invention.

Fig. 16 is a cross-sectional view of a disposable sterile disconnect provided in accordance with a second embodiment of the present invention, with the first connector and the second connector in a connected state.

Fig. 17 is a perspective cross-sectional view of a disposable sterile disconnect provided in accordance with a second embodiment of the present invention, with the first connector and the second connector in a connected state.

Fig. 18 is a front view illustrating the first connector and the second connector according to the second embodiment of the present invention, wherein the first connector and the second connector are in a separated state.

Fig. 19 is a split cross-sectional view of a first connector and a second connector according to a second embodiment of the present invention, where the first connector and the second connector are in a separated state.

Fig. 20 is a perspective cross-sectional view of a first connector according to a second embodiment of the present invention.

Fig. 21 is a perspective cross-sectional view of a second connector according to a second embodiment of the present invention.

Fig. 22 is a perspective view of a first valve housing and connector provided in accordance with a second embodiment of the present invention.

Fig. 23 is a perspective view of a disposable sterile disconnect provided in accordance with a third embodiment of the present invention.

Fig. 24 is a cross-sectional view of a disposable sterile disconnect provided in accordance with a third embodiment of the present invention, with the first connector and the second connector in a connected state.

Fig. 25 is a perspective cross-sectional view of a disposable sterile disconnect provided in accordance with a third embodiment of the present invention, with the first connector and the second connector in a connected state.

Fig. 26 is a split cross-sectional view of a disposable sterile disconnect provided in accordance with a third embodiment of the present invention, with the first connector and the second connector in a disconnected state.

Fig. 27 is a split, cross-sectional, perspective view of a disposable sterile disconnect provided in accordance with a third embodiment of the present invention, with the first connector and the second connector in a disconnected state.

Fig. 28 is a perspective view of a connector according to a third embodiment of the present invention.

Wherein 1-first connector, 11-first housing, 110-connecting ring, 111-first stopper, 112-third stopper, 1121-end point, 113-chute, 114-connecting face, 115-spacing gap, 2-second connector, 21-second housing, 211-second stopper, 212-fourth stopper, 3-first valve assembly, 31-first body, 311-first hollow cavity, 312-first side opening, 313-first sealing end, 3131-first detent, 3132-guide face, 314-first recess, 32-first valve sleeve, 321-first boss, 322-slider, 323-annular flange, 4-first elastic drive member, 5-second valve assembly, 51-second body, 511-second hollow cavity, 512-second side opening, 513-second sealing end, 5131-second detent, 514-second recess, 52-second valve sleeve, 521-second boss, 6-second elastic drive member, 71-first gap, 72-second gap, 8-flow channel, 9-connector, 91-overlap sealing zone, 92-first sealing position, 93-second sealing position, 94-spacing bead.

Detailed Description

In order to make the present invention better understood by those skilled in the art, the following description of the technical solutions of the present invention will be made in detail, but not all embodiments of the present invention are apparent to some embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.

As shown in fig. 1-28, a disposable sterile disconnect comprises a first connector 1, and a second connector 2 detachably connected to the first connector 1; the first connector 1 comprises a first housing 11, a first valve assembly 3 and a first resilient driver 4, and the second connector 2 comprises a second housing 21, a second valve assembly 5 and a second resilient driver 6. A first gap 71 is provided between the first housing 11 and the first valve assembly 3, the first gap 71 being for accommodating the first elastic driving member 4 and providing a space for axial expansion and contraction thereof; a second gap 72 is provided between the second housing 21 and the second valve assembly 5, the second gap 72 being adapted to accommodate the second resilient driver 6 and to provide space for axial expansion thereof. In the present embodiment, the axial direction refers to a direction in which the first connector 1 and the second connector 2 are engaged and the flow of the feed liquid is allowed, specifically, a direction in which the O line in fig. 4 extends.

The first connector 1 and the second connector 2 have a communication state and a separation state, when the two are in the communication state, the flow path of the first valve assembly 3 and the flow path of the second valve assembly 5 are communicated to form a flow path 8, the flow path 8 is used for feeding liquid to flow, the flow path 8 is simultaneously isolated from the first gap 71 and the second gap 72, and the first elastic driving member 4 and the second elastic driving member 6 are in a compressed state.

When the first connector 1 and the second connector 2 are in the separated state, the flow passage 8 between the first valve assembly 3 and the second valve assembly 5 is disconnected, thereby preventing the flow of the feed liquid, and the flow passage of the first valve assembly 3 is isolated from the first gap 71, the flow passage 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 the extended state.

The structure of the first connector 1 and the second connector 2 in the disposable sterile breaker of the invention can be the same or different, the first gap 71 is positioned between the first shell 11 and the first valve component 3, and the second gap 72 is positioned between the second shell 21 and the second valve component 5, namely, the first elastic driving piece 4 and the second elastic driving piece 6 are not in direct contact with feed liquid; since the first gap 71 and the second gap 72 are continuously extended, it means that the first gap 71 and the second gap 72 are both free of blocking members, so that the first elastic driving member 4 and the second elastic driving member 6 can be stretched and compressed in the first gap 71 and the second gap 72, respectively, without blocking; as the first connector 1 and the second connector 2 are connected, the first elastic driving piece 4 and the second elastic driving piece 6 are compressed, the flow path between the first connector 1 and the second connector 2 is communicated, the flow channel 8 is formed for the flow of the liquid, and the liquid is isolated from the first gap 71 and the second gap 72, so that the liquid is not contacted with the first elastic driving piece 4 and the second elastic driving piece 6, and the risk of pollution caused by the contact of the liquid with the elastic driving piece is avoided; with the first connector 1 and the second connector 2 separated, the first elastic driving member 4 and the second elastic driving member 6 are stretched, the flow channel 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, and at this time, the flow channel in the first connector 1 and the first elastic driving member 4, and the flow channel in the second connector 2 and the second elastic driving member 6 are still kept isolated from each other, that is, the first elastic driving member 4 and the second elastic driving member 6 are not in direct contact with the feed liquid.

Example 1

In this embodiment, as shown in fig. 2, the first valve assembly 3 includes at least a first body 31 and a first valve sleeve 32, the first body 31 having a first hollow cavity 311, a first side opening 312 communicating with the first hollow cavity 311, and a first sealing end 313 sealing one end of the first hollow cavity 311; the first valve housing 32 is movably sleeved outside the first body 31 so as to move in a first gap 71 formed between the first body 31, the first valve housing 32 and the first housing 11. The first elastic driving member 4 is axially sleeved outside the first main body 31, is located in the first gap 71, and two ends of the first elastic driving member are respectively abutted against the first main body 31 and the first valve sleeve 32.

As shown in fig. 3, the second valve assembly 5 includes at least a second body 51 and a second valve housing 52, the second body 51 having a second hollow cavity 511, a second side opening 512 communicating with the second hollow cavity 511, and a second sealing end 513 sealing one end of the second hollow cavity 511; the second valve housing 52 is movably sleeved outside the second body 51 so as to move in a second gap 72 formed between the second body 51, the second valve housing 52 and the second housing 21. The second elastic driving member 6 is axially sleeved outside the second main body 51, is located in the second gap 72, and two ends of the second elastic driving member are respectively abutted against the second main body 51 and the second valve sleeve 52.

As shown in fig. 4 to 6, when the first connector 1 and the second connector 2 are in the communication state, the first housing 11, the second housing 21 abut, the ends of the first valve sleeve 32 and the second valve sleeve 52 which are close to each other abut each other and are in the sealing connection state in the axial direction, and the flow passage 8 is in the sealed state while being pushed by the first valve sleeve 32 and the second valve sleeve 52, and 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, i.e. the first side opening 312 is opened, and the second side opening 512 is opened, so that the first hollow cavity 311 and the second hollow cavity 511 are mutually communicated through the first side opening 312 and the second side opening 512, the communication between the flow path of the first valve assembly 3 and the flow path of the second valve assembly 5 forms the flow path 8 for feeding liquid, and the liquid enters the first hollow cavity 311 of the first connector 1, flows out of the first side opening 312, flows to the second side opening 512, then enters the second hollow cavity 511, and finally flows out of the second connector 2, i.e. the liquid flows along the direction indicated by the arrow in fig. 4. The whole runner 8 is in a state of being isolated from the first gap 71 and the second gap 72, so that the feed liquid is prevented from contacting the first elastic driving piece 4 and the second elastic driving piece 6, and the sterility and the cleanliness of the feed liquid are maintained.

At this time, in the present embodiment, the first sealing end 313 and the second sealing end 513 are in point contact, and when the flow path between the first connector 1 and the second connector 2 is communicated, the feed liquid is directly contacted with the first sealing end 313 and the second sealing end 513 in the process of flowing to the second side opening 512 through the first side opening 313, so that the sides of the first sealing end 313 and the second sealing end 513 close to each other are attracted together by the action of the surface tension of the liquid, and 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 sides of the first sealing end 313 and the second sealing end 513 close to each other are in point contact, the contact area between the first sealing end 313 and the second sealing end 513 is minimized, so that the liquid can be rapidly separated in a short time, the liquid can be prevented from being exposed to be polluted, or the liquid can be prevented from being excessively attached to the first sealing end 313 and the second sealing end 513 to pollute the environment, etc.

In the present embodiment, the number of the first side openings 312 is plural, the sum of the areas of the plurality of 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 and S2; the number of the second side openings 512 is a plurality, the sum of the areas of the plurality of 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 be quickly transferred into the second hollow cavity 511 from the first hollow cavity 311 through the first side opening 312 and the second side opening 512, so that the feed liquid is quickly transferred between the first connector 1 and the first connector 2, and the situation that the retention time of the feed liquid in the breaker is long and the sterility is difficult to ensure is avoided.

In order to facilitate rapid convergence and dispersion of the feed liquid, accelerate rapid transfer of the feed liquid, increase transfer rate of the feed liquid, further reduce residence time of the feed liquid in the breaker, 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 is smoothly transited with the inner wall of the first hollow cavity 311; the second side opening 512 is coaxially disposed with the second hollow cavity 511, and an end of the second side opening 512 smoothly transitions with an inner wall of the second hollow cavity 511.

In order to quickly guide the feed liquid in the first hollow cavity 311 to the first side openings 313, the side of the first sealing end 313 away from the second sealing end 513 is tapered, so that a guiding surface 3132 is formed to guide the feed liquid to the plurality of first side openings 313 in the circumferential direction. Likewise, the side of the second sealing end 513 away from the first sealing end 313 may be tapered, so as to form a guiding surface to collect the feed liquid flowing into the plurality of second side openings 512 into the second hollow cavity 511, and thus the feed liquid in the second hollow cavity 511 is rapidly guided to the outlet side; in summary, the tapered structure accelerates the transfer of the feed 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 may exist at the same time or may exist alone, and are not particularly limited.

As shown in fig. 7 and 8, when the first connector 1 and the second connector 2 are switched from the connected state to the disconnected state, at this time, as the first connector 1 and the second connector 2 are separated in the direction toward each other, the abutment between the first valve sleeve 32 and the second valve sleeve 52 is cancelled and moved in the direction toward each other, the compression between the first elastic driving member 4 and the second elastic driving member 6 is lost, the first elastic driving member 4 is stretched to push the first valve sleeve 32 to the sealing stopper first side opening 312 with the return to the natural state, the second elastic driving member 6 is stretched to push the second valve sleeve 52 to the sealing stopper second side opening 512 with the return to the natural state, and the flow passage 8 is opened. At this time, the flow path of the first valve assembly 3 is still kept isolated from the first gap 71, and the flow path of the second valve assembly 5 is still kept isolated from the second gap 72, that is, the feed liquid is not in contact with the first elastic driving member 4 and the second elastic driving member 6, so that the sterility and cleanliness of the feed liquid are maintained.

In order to ensure that the first valve sleeve 32 effectively seals off the first side opening 312, a first sealing position 92 is provided between the first valve sleeve 32, the first body 31, the first sealing end 313, which first sealing position 92 is provided with an elastic sealing element. Specifically, in the present embodiment, a first sealing position 92 is provided between one end of the first valve sleeve 32 and the outer wall of the first body 31, and a first sealing position 92 is provided between the other end of the first valve sleeve 32 and the first sealing end 313.

In order to ensure that the second valve sleeve 52 effectively seals off the second side opening 512, a second sealing position 93 is provided between the second valve sleeve 52, the second body 51 and the second sealing end 513, which second sealing position 93 is provided with an elastic seal. Specifically, in the present embodiment, a second sealing position 93 is provided between one end of the second valve sleeve 52 and the outer wall of the second body 51, and a second sealing position 93 is provided between the other end of the second valve sleeve 52 and the second sealing position 93.

A connecting piece 9 is further arranged 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 communicating state, the first sealing end 313 and the second sealing end 513 are positioned in the connecting piece 9, and the connecting piece 9 is positioned in the first shell 11 and the second shell 21; the connector 9 is located outside the first housing 11 and the second housing 21 for receiving the feed liquid when the first connector 1 and the second connector 2 are in the disconnected state.

Specifically, in the present embodiment, the connecting member 9 is integrally connected to the second valve sleeve 52, which extends in the axial direction toward the first valve sleeve 32, but in other embodiments, the connecting member 9 may also be integrally connected to the first valve sleeve 32 and extend in the axial direction toward the second valve sleeve 52. To ensure a sealing engagement between the connector piece 9 and the first valve assembly 3 in the connected state of the first connector 1 and the second connector 2, the connector piece 9 axially overlaps at least part of the first valve sleeve 32, thereby forming an overlapping sealing zone 91 (see fig. 4) encircling in the axial direction; when the flow paths between the first connector 1 and the second connector 2 are communicated, the ends, close to each other, of the connecting piece 9 and the first valve sleeve 32 are abutted tightly and sealed, at the moment, the ends, close to each other, of the connecting piece 9 and the first valve sleeve 32 are mutually overlapped to form an overlapped sealing area 91 encircling along the axis direction of the connecting piece 9, and the overlapped sealing area 91 is arranged in a complete circle around the axis, so that the sealing effect is good, and leakage of the first valve sleeve 32 and the second valve sleeve 52 due to the pressure of feed liquid at the connecting position is avoided. Of course, in other embodiments, the overlapping sealing area 91 may be provided with a multi-turn structure, which has high structural strength and better sealing effect.

As shown in fig. 5 to 10, in order to reduce the overall volume of the decoupler, under the condition of ensuring that an effective overlapped sealing area 91 is formed between the first valve sleeve 32 and the connecting member 9, when the first valve assembly 3 and the second valve assembly 5 are pushed against each other, the first valve sleeve 32 can move smoothly in the axial direction, a part of the first valve sleeve 32 protrudes toward the central axis direction of the first main body 31 to form a first convex position 321, a first concave position 314 is formed at the position of the first main body 31 corresponding to the first side opening 312 in the axial direction, and the first convex position 321 can move axially in the first concave position 314.

The first sealing end 313 has a first locking portion 3131 at its outer periphery, and when the first valve sleeve 32 seals the first side opening 312, the first protruding portion 321 is in sealing engagement with the first locking portion 3131 to form part of the first sealing portion 92.

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 formed in the second body 51 corresponding to the second side opening 512 in the axial direction, and the second convex portion 521 can axially move in the second concave portion 514.

The second sealing end 513 has a second locking portion 5131 at its outer periphery, and when the second valve sleeve 52 seals the second side opening 512, the second protruding portion 521 is in sealing engagement with the second locking portion 5131 to form part of the second sealing portion 93.

In order to ensure axial movement of the first valve sleeve 32 relative to the first housing 11, and in particular axial movement of the first valve sleeve 32 within the first housing 11, a guiding and limiting member is provided between the inner wall of the first housing 11 and the outer wall of the first valve sleeve 32, thereby limiting circumferential rotation of the first valve sleeve 32 and the first housing 11 and achieving a rotationally locked engagement of the first valve sleeve 32 and the first housing 11. In this embodiment, the guiding and limiting member includes a sliding groove 113 disposed on the inner wall of the first housing 11 and a sliding block 322 disposed on the outer wall of the first valve sleeve 32, where the sliding block 322 protrudes outward in the radial direction of the first valve sleeve 32 and is slidably connected in the sliding groove 113 in the axial direction. At the same time as the sliding blocks 322 are arranged, the outer wall of the first valve sleeve 32 can also form an annular convex edge 323 which connects the sliding blocks 322 into a whole, and the annular convex edge 323 can also abut against the first elastic driving piece 4. Specifically, the number of the guiding limiting members is plural, that is, the inner wall of the first housing 11 is provided with plural sliding grooves 113 at intervals, and the annular convex edges 323 connect the sliding blocks 322 which are arranged at intervals and matched with the number of the sliding grooves 113 into a whole. The structure of the guiding and limiting member 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 repeated.

As shown in fig. 12 to 15, the first housing 11 is provided with a first stopper 111, and the second housing 21 is provided with a second stopper 211, and when the first connector 1 and the second connector 2 are in a communication state, the first stopper 111 and the second stopper 211 are in an axial stopper region, so that the axial movement of the first housing 11 and the second housing 21 can be restricted. The first limiting member 111 and the second limiting member 211 may be any limiting member structure that can be realized by a person skilled in the art, so long as it can ensure that the first limiting member 111 and the second limiting member 211 realize mutual stop in the axial limiting region, so as to limit the movement of the first housing 11 and the second housing 21 in the axial direction.

In this embodiment, the end of the first housing 11 near the second housing 21 has a connection surface 114, the end of the first housing 11 near the second housing 21 extends along the axial direction to form the connection ring 110, the first limiting member 111 is formed by radially protruding the end of the connection ring 110 far from the connection surface 114 towards the axial direction near the first housing 11, the single first limiting member 111 is an arc-shaped section 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 connection surface 114. The number of the first limiting members 111 is plural, and correspondingly, the number of the limiting gaps 115 is plural. As shown in fig. 14 and 15, the second limiting members 211 are formed on the outer wall of the end, close to the first housing 11, of the second housing 21, the number of the second limiting members 211 is matched with that of the first limiting members 111, and the single second limiting member 211 is an arc-shaped section protruding radially and extending along the circumferential direction relative to the outer wall of the second housing 21. When the first housing 11 and the second housing 21 are assembled and connected, the second stopper 211 is caused to fall into the stopper gap 115 and is blocked by the first stopper 111 in the axial direction as it rotates in the circumferential direction, thereby achieving axial stopper of the first housing 11 and the second housing 21. Once a portion of the second stop 211 enters the stop gap 115, the first stop 111 and the second stop 211 are in an axial stop zone, and the second stop 211 need not fall completely into the stop gap 115.

The first housing 11 is provided with a third limiting member 112, the second housing 21 is provided with a fourth limiting member 212, and the first and second limiting members 111 and 211 are in an axial limiting region at this time along with the circumferential rotational connection of the first housing 11 and the second housing 21 until the third and fourth limiting members 112 and 212 are in a circumferential limiting region, thereby limiting the circumferential movement of the first and second housings 11 and 21. The mutual stop of the first limiting piece 111 and the second limiting piece 211 is needed to be performed by means of the third limiting piece 112 and the fourth limiting piece 212, so that the first limiting piece 111 and the second limiting piece 211 form a stop function firstly, then a double stop function is achieved through the third limiting piece 112 and the fourth limiting piece 212, the first connector 1 and the second connector 2 are prevented from being separated and separated along the circumferential direction, the first housing 11 and the second housing 21 are located in an axial limiting area at the same time of circumferential limiting, a double limiting function is achieved, and stable connection of the first housing 11 and the second housing 21 is guaranteed; the third stopper 112 and the fourth stopper 212 serve to prevent the circumferential rotation and also prevent the axial pulling apart of the first housing 11 and the second housing 21.

In the present embodiment, the connecting ring 110 of the first housing 11 is recessed away from the axial direction of the first housing 11 to form the third stopper 112, in other words, the third stopper 112 is formed between the adjacent stopper gaps 115, and the third stopper 112 is an arc-shaped section extending along the circumferential direction and includes two end points 1121, the axial thickness of which is larger than that of the first stopper 111. As shown in fig. 15, the fourth stopper 212 is a radial protrusion formed below the second stopper 211 (illustrated in the direction shown in fig. 14). When the second limiting member 211 falls completely into the limiting gap 115 and is blocked by the first limiting member 111 in the axial direction, the fourth limiting member 212 abuts against the two end points 1121 of the third limiting member 112, preventing the first housing 11 and the second housing 21 from continuing to rotate circumferentially.

When the first housing 11 and the second housing 21 are assembled and connected, the third stopper 112 and the fourth stopper 212 are slidingly connected circumferentially around the first body 31, and the central angle corresponding to the moving path of the slidingly connected to the circumferential stopper is 30-60 °, that is, the angle α is 30-60 °, preferably 45 °, in fig. 13. The circumferential rotation angles of the third limiting member 112 and the fourth limiting member 212 are too large, the rotation path is too long, the flow path is difficult to be rapidly broken in a short time, and the sterility is difficult to be ensured; the circumferential rotation angle is too small, the contact between the third limiting part 112 and the fourth limiting part 212 is less, the connection firmness and stability between the first shell 11 and the second shell 21 are difficult to ensure, the quick disconnection and connection firmness can be guaranteed due to the arrangement of the angle, the quick disconnection can be guaranteed, the sterility and the purity of feed liquid are guaranteed, the first shell 11 and the second shell 21 are guaranteed to be firmly connected, adverse effects are not easy to be caused due to external vibration or shaking or artificial misoperation, and the sterility in a connection state is guaranteed.

In order to further secure the connection between the first housing 11 and the second housing 21, a removable stop bar (not shown) may be provided at the junction of the two. The removable limiting strip may be an adhesive strip or a component that is mutually matched with the first limiting piece 111 and the second limiting piece 211, so that the joint between the first limiting piece 111 and the second limiting piece 211 is further fixed, and the first connector 1 and the second connector 2 are prevented from being separated due to rotation between the first limiting piece 111 and the second limiting piece 211 caused by misoperation.

Example two

As shown in fig. 16-21, 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 convenient for processing and manufacturing.

Specifically, the first portion of the connecting member 9 is integrally connected with the first valve sleeve 32, the first portion of the connecting member 9 extends from the first boss 321 of the first valve sleeve 32 in the axial direction towards the direction approaching the second valve sleeve 52, the second portion of the connecting member 9 is integrally connected with the second valve sleeve 52, and under the pushing of the first elastic driving member 4 and the second elastic driving member 6, the end surfaces of the first end surface and the second end surface, which are close to each other, of the connecting member 9 are sealed and abutted.

In this case, the structure of the overlapped sealing area 91 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 again.

Example III

As shown in fig. 23-28, in this embodiment the connector 9 is provided separately from the first valve sleeve 32 and the second valve sleeve 52, i.e. the connector 9 is not connected to either the first valve sleeve 32 or the second valve sleeve 52, which is a separate component.

When the connecting piece 9 is assembled and connected with the first valve sleeve 32 and the second valve sleeve 52, the end face of the first boss 321 of the first valve sleeve 32 abuts against one end of the limiting boss 94, the end face of the second boss 521 of the second valve sleeve 52 abuts against the other end of the limiting boss 94, namely, the end, close to each other, of the first valve sleeve 32 and the second valve sleeve 52 abuts against the two ends of the limiting boss 94 respectively, so that the first elastic driving piece 4 and the second elastic driving piece 6 are pressed to be in a compressed state respectively.

The inner walls of the first valve sleeve 32 and the connecting element 9 also form a first sealing position 92 and the inner walls of the second valve sleeve 52 and the connecting element 9 also form a second sealing position 93. The overlapping seal area 91 structure in the first embodiment may not be provided at this time.

In the present embodiment, the first casing 1 and the second casing 21 are connected by a limit bar.

Other structures are the same as those of the first embodiment, and will not be described again.

The foregoing detailed description is provided to illustrate the present invention and not to limit the invention, and any modifications and changes made to the present invention within the spirit of the present invention and the scope of the appended claims fall within the scope of the present invention.

Claims

1. A disposable sterile disconnect comprising:

a second connector detachably connected to the first connector, comprising a second housing, a second valve assembly, and a second elastic driving member; it is characterized in that the method comprises the steps of,

2. The disposable sterile disconnect of claim 1, wherein:

the first valve assembly at least comprises a first main body and a first valve sleeve, the first main body is provided with a first hollow cavity and a first side opening communicated with the first hollow cavity, and the first valve sleeve is movably sleeved on the outer side of the first main body so as to form a first gap among the first main body, the first valve sleeve and the first shell;

3. The disposable sterile disconnect of claim 2, wherein:

the first main body is provided with a first sealing end for sealing one end of the first hollow cavity, and the second main body is provided with a second sealing end for sealing one end of the second hollow cavity;

4. A disposable sterile interrupter according to claim 3, wherein: the connector axially overlaps at least a portion of the first valve sleeve or/and the second valve sleeve to form an overlapping seal disposed about the axis and extending in the axial direction.

5. A disposable sterile interrupter according to claim 3, wherein:

when the first valve sleeve seals and plugs the opening at the first side, a first sealing position is arranged among the first valve sleeve, the first main body and the first sealing end;

6. A disposable sterile interrupter according to claim 3, wherein:

the part of the first valve sleeve protrudes towards the central axis direction of the first main body to form a first convex position, a first concave position is formed at the position of the first main body corresponding to the opening of the first side along the axial direction, and the first convex position can move in the first concave position;

7. A disposable sterile interrupter according to claim 3, wherein: the first sealing end and the second sealing end point are in contact when the first connector and the second connector are in a communicating state.

8. A disposable sterile interrupter according to claim 3, wherein: the side of the first sealing end or/and the second sealing end, which is away from each other, is in a cone shape so as to form a guiding surface.

9. The disposable sterile disconnect of claim 2, wherein: the number of the first side openings is a plurality, the sum of the areas of the plurality of the first side openings is S1, the cross section area of the first hollow cavity is S2, and S1 is more than S2 between S1 and S2; or/and, the number of the second side openings is a plurality, the sum of the areas of the second side openings is S3, the cross section area of the second hollow cavity is S4, and S3 is more than S4 between S3 and S4.

10. The disposable sterile disconnect of claim 2, wherein: the first side opening and the first hollow cavity are coaxially arranged, and the end part of the first side opening and the inner wall of the first hollow cavity are in smooth transition; or/and, the second side opening and the second hollow cavity are coaxially arranged, and the end part of the second side opening and the inner wall of the second hollow cavity are in smooth transition.

11. The disposable sterile disconnect of claim 1, wherein: the first shell is provided with a first limiting part, the second shell is provided with a second limiting part, and when the first connector and the second connector are in a communicating state, the first limiting part and the second limiting part are in an axial limiting area so as to limit the axial movement of the first shell and the second shell.

12. The disposable sterile interrupter of claim 11, wherein: and a guiding limiting piece is arranged between the inner wall of the first shell and the outer wall of the first valve sleeve so as to limit the circumferential rotation of the first valve sleeve and the first shell, or/and a guiding limiting piece is arranged between the inner wall of the second shell and the outer wall of the second valve sleeve so as to limit the circumferential rotation of the second valve sleeve and the second shell.

13. The disposable sterile interrupter of claim 12, wherein: the guide limiting piece comprises a sliding groove arranged on the inner wall of the first shell and a sliding block arranged on the outer wall of the first valve sleeve, and the sliding block is axially slidably connected in the sliding groove.

14. The disposable sterile interrupter of claim 11, wherein: the first shell is provided with a third limiting part, the second shell is provided with a fourth limiting part, and the fourth limiting part is rotationally connected with the first shell and the second shell along with the circumferential direction until the third limiting part and the fourth limiting part are positioned in a circumferential limiting area so as to limit the circumferential movement of the first shell and the second shell, and at the moment, the first limiting part and the second limiting part are positioned in an axial limiting area.

15. The disposable sterile interrupter of claim 11, wherein: the third limiting piece and the fourth limiting piece are connected in a sliding mode around the first main body in the circumferential direction, and the central angle corresponding to the moving path in the sliding mode when the third limiting piece and the fourth limiting piece are connected to the circumferential limiting area is 30-60 degrees.

16. The disposable sterile disconnect of claim 1, wherein: and a removable limit strip is arranged at the joint of the first shell and the second shell.