CN107456619B

CN107456619B - Duplex mixing injector with buckle structure

Info

Publication number: CN107456619B
Application number: CN201710843015.8A
Authority: CN
Inventors: 林础藩; 林丽敏; 邓坤学; 袁玉宇
Original assignee: Medprin Regenerative Medical Technologies Co Ltd
Current assignee: Medprin Regenerative Medical Technologies Co Ltd
Priority date: 2017-09-18
Filing date: 2017-09-18
Publication date: 2023-07-18
Anticipated expiration: 2037-09-18
Also published as: CN107456619A

Abstract

The invention relates to a duplex mixing syringe with a snap-in structure, comprising: the device comprises two syringes, an upper module fixing frame used for fixing one ends of the two syringes, and a lower module fixing frame used for fixing the other ends of the two syringes and guiding liquid in the two syringes to a nozzle. According to the invention, the first buckle is arranged on the upper end face of the upper module fixing frame to fix the syringes, and the distance between the first buckle and the central axis of the corresponding through hole is smaller than the maximum distance between the outer side of the flange part of the syringe and the central axis of the corresponding through hole, so that each syringe can be tightly fixed on the upper module fixing frame, and the rotation and the loosening of the syringes in the use process are avoided.

Description

Duplex mixing injector with buckle structure

Technical Field

The invention relates to the field of medical instruments, in particular to a duplex mixing syringe with a buckle structure.

Background

Currently, the syringes used clinically are mainly single barrel syringes and duplex hybrid syringes. Single-barrel syringes have difficulty achieving this when immediate mixing of two liquid medicaments is required in order to achieve a suitable therapeutic effect. For example, some hemostatic or tissue sealing gels are formed by a two-component mixing reaction, and because of the rapid increase in viscosity of the solution after mixing the two components, the solution must be applied immediately with mixing, otherwise it is difficult to effectively apply the same to the target site; in this case, a dual mixing syringe must be used.

Dual mixing syringes on the market typically require withdrawal of the component solution from the vial into the syringe prior to use. Because of the need for drawing fluid, dual mixing syringes are not preferably designed to be entirely non-removable. The common mode in the market is to split a duplex mixing injector into an upper module and a lower module, wherein the upper module of the duplex mixing injector is used for fixing the two injectors and ensuring that the two injectors synchronously push injection, and the lower module is used for mixing the liquid in the two injectors and then spraying the liquid on an application part; the upper and lower modules need to be combined together to form a single unit when the dual mixing syringe is in use.

Because duplex mixers are used primarily by clinicians, particularly during surgery, ease and rapidity of operation and assembly are important. To increase the efficiency of extracting the component liquids from the reagent bottles into the duplex mixer, two syringes may be fitted into the upper module in advance. When the component solution is extracted from the reagent bottle, luer threads at the lower ends of the two syringes are needed, and the two syringes are connected with the reagent bottle through the luer threads, so that leakage can not occur in the liquid medicine transferring process. At this time, a rotation force is generated in the process of using the luer threaded connection, so that the syringe is easy to drive to rotate, the connection operation is inconvenient, and meanwhile, the syringe is easy to loosen, so that the risk exists; in addition, duplex hybrid syringes require alignment of the two syringe luer and the bore of the lower module simultaneously during assembly, which is time consuming and very inconvenient. In order to avoid the problem of the rotation of the injector under force in the process of connecting the reagent bottles, the prior art generally arranges a semi-enclosed fixing structure on the duplex mixing injector, and utilizes a large-area package to fix the protection support of the injector; the double mixing injector with the semi-enclosed structure is troublesome to assemble and disassemble in the use process, inconvenient to observe and also affects the appearance of the product.

Therefore, it is necessary to design a duplex mixing syringe which has a simple structure, is convenient to operate, is fast to assemble, and can effectively prevent the syringe from rotating during the use process.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a duplex mixing injector with a buckle structure.

In order to achieve the above purpose, the invention adopts the following technical scheme:

a duplex mixing syringe having a snap-fit structure, the duplex mixing syringe comprising:

the device comprises two syringes, an upper module fixing frame and a lower module fixing frame, wherein the upper module fixing frame is used for fixing one ends of the two syringes, and the lower module fixing frame is used for fixing the other ends of the two syringes and guiding liquid in the two syringes to a nozzle;

the injector comprises a cylindrical liquid storage part for storing liquid and a push-pull rod capable of performing piston movement in the liquid storage part, a flange part is arranged at the end part of the opening end of the liquid storage part, the upper module fixing frame is provided with a T-shaped structure, two through holes are formed in the upper end face of the T-shaped structure, the two injectors respectively penetrate through the two through holes, and the flange part of the injector is received on the upper end face of the T-shaped structure;

the upper end face of the T-shaped structure of the upper module fixing frame is provided with at least one first buckle used for fixing the syringe beside each through hole, the first buckle is clamped with the flange part of the syringe, and the distance between the first buckle and the central axis of the corresponding through hole is smaller than the maximum distance from the outer side of the flange part of the syringe to the central axis of the corresponding through hole.

According to the invention, the first buckle is arranged on the upper end face of the upper module fixing frame to fix the syringes, and the distance between the first buckle and the central axis of the corresponding through hole is smaller than the maximum distance between the outer side of the flange part of the syringe and the center of the corresponding through hole, so that each syringe can be tightly fixed on the upper module fixing frame, and the rotation and the loosening of the syringes in the use process are avoided.

It should be noted that, the distance between the first buckle and the central axis of the corresponding through hole refers to the maximum horizontal distance between the inner surface of the first buckle and the central axis of the through hole.

Further, two mutually parallel hand support straight edges are arranged on the flange part of each syringe, and the first buckle is clamped with the hand support straight edges.

Further, two first buckles for fixing the same syringe are arranged beside each through hole.

Further, the lower module fixing frame is provided with assembly holes matched with the luer heads of the two syringes, and a second buckle protruding out of the top surface of the lower module fixing frame is arranged between the two assembly holes; the vertical portion of the T-shaped structure of the upper module fixing frame is provided with a clamping structure, a buckle assembly position is arranged in the clamping structure, and the second buckle is in clamping connection with the buckle assembly position.

Further, when the second buckle is assembled into the buckle assembly position, the luer heads of the two syringes are automatically assembled into the two assembly holes of the lower module fixing frame at the same time, and the two assembly holes are arranged in the longitudinal part of the T-shaped structure.

Further, the second buckle is arranged at the symmetrical center position of the two assembly holes of the lower module fixing frame, the buckle assembly position is arranged at the symmetrical center position of the clamping structure of the upper module fixing frame, and the arrangement enables the second buckle and the buckle assembly to be coordinated on the same central line. When the second buckle is installed in the buckle installation position, the luer heads of the two syringes can be automatically installed in the two assembly holes of the lower module fixing frame of the duplex mixing syringe at the same time, and a water-leakage-proof sealing structure is formed at the assembly position.

The upper module fixing frame and the lower module fixing frame are connected into a whole through the clamping connection of the second clamping buckle and the clamping buckle assembly, so that the problems of complex assembly and easy dispersion of stress of the duplex mixing injector are solved. The buckle structure provided by the invention replaces the assembly mode of luer threads or pull rings in the market, is rapid and simple to assemble, and ensures that the product is convenient and easy to use. The snap fitting also gives the operator a feedback sound to the assembly, by which the operator can accurately judge whether the dual mixing syringe is assembled, thereby confirming whether it can be used.

The duplex mixing injector provided by the invention comprises an upper module fixing frame and a lower module fixing frame, and the problem that the injector is easy to rotate in the use process is solved by fixing two groups of buckling positions respectively arranged on the upper module fixing frame and the lower module fixing frame; meanwhile, the problem that the duplex mixing injector is complex in assembly and easy to break out in stress is solved.

Further, the duplex mixing injector further comprises an injector push-pull rod connecting plate, wherein the injector push-pull rod connecting plate is used for connecting push-pull rods of the two injectors into a whole.

Further, the connecting plate of the push-pull rod of the injector is connected with the push-pull rod in a way that the push-pull rod is always aligned.

Further, the lower module fixing frame is provided with a curved channel for communicating the two syringes with the nozzles, respectively.

Further, the syringe is a syringe pre-packaged with a liquid, and the syringe has identification information corresponding to the liquid.

Further, the nozzle is connected with the lower module fixing frame through the extension pipe.

Compared with the prior art, the invention has the following beneficial effects:

according to the invention, the first buckle is arranged on the upper end face of the upper module fixing frame to fix the syringes, and the distance between the first buckle and the central axis of the corresponding through hole is smaller than the maximum distance from the outer side of the flange part of the syringe to the central axis of the corresponding through hole, so that each syringe can be tightly fixed on the upper module fixing frame, and the rotation and the loosening of the syringes in the use process are avoided; the upper module fixing frame and the lower module fixing frame are connected into a whole through the second buckle and the clamping connection of the buckle assembly position arranged in the clamping structure, so that the problems of complex assembly and easy dispersion of stress of the duplex mixing injector are solved. In addition, the duplex mixing injector provided by the invention is convenient to assemble, clean and sanitary, and has great popularization and application values.

Drawings

Fig. 1 is a schematic structural view of a duplex mixing syringe provided in embodiment 1;

fig. 2 is a schematic structural view of the syringe according to embodiment 1;

fig. 3 is a schematic structural diagram of an upper module fixing frame provided in embodiment 1;

fig. 4 is an end view of the upper module holder provided in embodiment 1;

FIG. 5 is a schematic view showing a partial structure of a dual mixing syringe according to embodiment 1;

FIG. 6 is a schematic side view of a portion of a duplex mixing syringe provided in example 1;

fig. 7 is a schematic diagram of the split structure of the duplex mixing syringe provided in embodiment 1;

FIG. 8 is a schematic view of another split structure of the dual mixing syringe provided in example 1;

fig. 9 is another partial side view schematic of the duplex mixing syringe provided in example 1.

Detailed Description

Various exemplary embodiments, features and aspects of the invention will be described in detail below with reference to the drawings. In the drawings, like reference numbers indicate identical or functionally similar elements. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

The word "exemplary" is used herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

In addition, numerous specific details are set forth in the following description in order to provide a better illustration of the invention. It will be understood by those skilled in the art that the present invention may be practiced without some of these specific details. In some instances, well known methods, procedures, components, and circuits have not been described in detail so as not to obscure the present invention.

Example 1

Fig. 1 is a schematic structural diagram of a duplex mixing syringe according to the present embodiment, as shown in fig. 1, the duplex mixing syringe includes: two syringes 10, an upper module fixing frame 20 for fixing one end of the two syringes 10, and a lower module fixing frame 30 for fixing the other end of the two syringes 10 and guiding the liquid in the two syringes 10 to a nozzle 40, wherein the nozzle 40 is connected with the lower module fixing frame 30.

Fig. 2 is a schematic structural diagram of the injector 10 provided in this embodiment, as shown in fig. 2, the injector 10 includes a cylindrical liquid storage portion 11 for storing liquid, and a push-pull rod 12 capable of performing a piston movement in the liquid storage portion 11, a flange portion 13 is disposed at an end portion of an open end of the liquid storage portion 11, the upper module fixing frame 20 has a T-shaped structure, two through holes 21 are disposed on an upper end surface of the T-shaped structure, the two injectors 10 respectively pass through the two through holes 21, and the flange portion 13 of the injector 10 is received on the upper end surface of the T-shaped structure.

Fig. 3 and fig. 4 are a schematic structural view and an end view of the upper module fixing frame provided in this embodiment, as shown in the drawing, at least one first buckle 22 for fixing the syringe 10 is disposed on the upper end face of the T-shaped structure of the upper module fixing frame 20 beside each through hole 21, the first buckle 22 is clamped with the flange portion 13 of the syringe 10, and the distance between the first buckle 22 and the central axis of the corresponding through hole 21 is smaller than the maximum distance from the outer side of the flange portion 13 of the syringe 10 to the central axis of the corresponding through hole 21 (i.e., B < a). In this embodiment, two mutually parallel hand rest straight edges 14 are provided on the flange portion 13 of each syringe 10, and the first buckle 22 is in clamping connection with the hand rest straight edges 14. Two first catches 22 for fixing the same syringe 10 are provided beside each through hole 21. Fig. 5 and 6 are a schematic partial structure view and a schematic partial side view of the duplex mixing syringe according to the present embodiment.

The syringe 10 in this embodiment is a single syringe, and the syringe 10 may be made of transparent or semitransparent materials such as plastic, glass, etc., and is not limited herein. The duplex mixing system of the present embodiment may be applied to any liquid-form substance, such as a liquid medicine, a glue solution, and the like, and is not limited thereto.

Fig. 7 and 8 are schematic views of split structures of the duplex hybrid injector, as shown in fig. 7 and 8, the lower module fixing frame 30 is provided with assembly holes 32 adapted to luer heads of two injectors 10, and a second buckle 31 protruding from the top surface of the lower module fixing frame 30 is arranged between the two assembly holes 32; the longitudinal part of the T-shaped structure of the upper module fixing frame 20 is provided with a clamping structure 23, a buckle assembly position 24 is arranged inside the clamping structure 23, and the second buckle 31 is in clamping connection with the buckle assembly position 24, as shown in fig. 9. More specifically, the snap-fit locations 24 are disposed inside the longitudinal portion of the T-shaped structure in such a manner that when the second snaps 31 are installed into the snap-fit locations 24, the luer heads of the two syringes 10 are simultaneously automatically installed into the two fitting holes 32 of the lower module holder 30.

The second fastener 31 is disposed at a symmetrical center position of the two assembly holes 32 of the lower module fixing frame 30, the fastener assembly position 24 is disposed at a symmetrical center position of the clamping structure 23 of the upper module fixing frame 20, and the second fastener 31 and the fastener assembly position 24 are on the same central line. When the second buckle 31 is installed in the buckle installation position 24, the luer heads of the two syringes 10 are automatically installed in the two assembly holes 32 of the lower module fixing frame 30 of the duplex mixing syringe at the same time, and a water-proof sealing structure is formed at the assembly position.

The duplex mixing injector provided by the invention comprises an upper module fixing frame and a lower module fixing frame, wherein the injector 10 is fixed through a first buckle 22 arranged on the upper module fixing frame 20, so that the injector 10 is prevented from rotating and loosening in the using process; the upper and lower module fixing frames are quickly connected into a whole through the second buckle 31 arranged on the lower module fixing frame 30 and the buckling assembly bit 24 arranged on the upper module fixing frame 20. The first buckle 22 is used for fixing the up-down directions of the two syringes 10 and preventing the syringes 10 from rotating; the upper module fixing frame 20 fixes the front and rear and left and right directions of the two syringes 10 to prevent the horizontal movement of the syringes 10, and the two syringes 10 can be effectively fixed by the 4 first buckles 22 and the upper module fixing frame 20. When long-distance guiding is performed, only the second buckle 31 of the lower module fixing frame 30 of the duplex mixing syringe is required to be inserted into the buckle assembly position 24, the luer of the syringe 10 and the two assembly holes 32 of the lower module fixing frame 30 are not required to be aligned, the syringe 10 can be easily placed into the assembly holes 32, the whole connection of the duplex mixing syringe is realized, the success rate is 100%, and the connection mode also has a better sealing effect. The invention solves the problem that the injector is easy to rotate in the using process by fixing the two groups of buckling positions, and simultaneously solves the problems that the assembly is complicated and the stress of the duplex mixing injector is easy to scatter.

Fig. 5 is a schematic view of a partial structure provided in this embodiment, and as shown in fig. 5, the duplex mixing system further includes a syringe push-pull rod connecting plate 50, where the syringe push-pull rod connecting plate 50 is used to connect the push-pull rods 12 of the two syringes 10 together. In this embodiment, the injector push-pull rod attachment plate 50 attaches the push-pull rod 12 in such a way that the push-pull rod 12 is always aligned.

The syringe push-pull rod attachment plate 50 of this embodiment may have a recess for securing the syringe push-pull rod 12. The grooves may be provided at different positions of the syringe push-pull rod attachment plate 50, respectively, without limitation. When installed, the flange structure of the hand-held end (free end) of the push-pull rod 12 may be installed in the groove. The syringe push-pull rod attachment plate 50 allows the syringe push-pull rods 12 to be co-located (i.e., their free ends to be co-planar) so that the syringe 10 can be equally sized to dispense fluid to achieve uniform mixing of the fluid. During use of the duplex mixing system, the syringe push-pull rods 12 may be moved the same distance by applying both a pushing force and a pulling force to the syringe push-pull rod connection plate 50, thereby enabling an equal amount of liquid to be withdrawn or pushed out by the pulling force.

The syringe push-pull rod attachment plate 50 of the present embodiment may have a recess corresponding to the shape of a finger, and the present embodiment does not limit the specific shape of the recess. For example, the concave part can be an arc-shaped concave part which can be matched with the shape and the size of the belly of the thumb of an adult, so that the operation of a user is convenient, and the operation comfort level is improved. In addition, the concave part can be designed into a frosted structure, so that the anti-skid function is enhanced.

The present embodiment does not limit the form and state in which the nozzle 40 discharges the mixed liquid. For example, the nozzle 40 may spray the mixed liquid with an atomization effect. In the case where the nozzle 40 ejects the mixed liquid with an atomizing effect, the length of the nozzle 40 and the size of the atomizing aperture may be determined by the viscosity of the solution during use, the gel forming time, and the manner of use. In this embodiment, the nozzle 40 is directly connected to the lower module holder 30. It will be appreciated by those skilled in the art that the nozzle may also be connected to the lower module holder by an extension tube as desired for the application site. The extension tube can be provided with two long non-communicated pipelines for further guiding the liquid, and then the two components of liquid are atomized and sprayed out after being mixed by the nozzle.

The lower module fixing frame 30 is provided with a curved passage communicating with the two syringes 10, respectively. For example, in the case of a duplex mixing system comprising two syringes, two channels may be provided in the lower module holder 30. The channel can have a certain radian, so that the die opening process is simplified, the die stripping effect is easy to realize, and the pushing resistance is reduced.

In this embodiment, the lower module holder 30 may be used to drain fluid from both syringes. The two channels of the present embodiment may be isolated from each other such that the liquids in the channels do not mix. In the case of a backflow of liquid caused by a user's mistake or other reasons, the liquid in each syringe 10 can be kept pure, and contamination or even failure caused by mixing the liquid with each other can be avoided.

In addition, it is preferable that the two syringes 10 are syringes of pre-packaged liquid, and that the two syringes 10 have identification information corresponding to the liquid they are loaded with. For example, the duplex mixing system can be used in a pre-filling mode, and is convenient to use. Specifically, in the case of using the pre-filling method, the syringes 10 may be loaded with a specific type of liquid, and the liquid inlet and outlet of the liquid storage portion 11 of each syringe 10 may be covered with a rubber cap to seal the liquid, thereby preventing the liquid from flowing out. Further, to facilitate the user in identifying different solutions, identification information corresponding to the liquids may be provided on the syringe, e.g., different colors may be used for the push-pull rod 12 of the two single-barrel syringes 10.

Claims

1. A duplex mixing syringe having a snap-fit structure, the duplex mixing syringe comprising:

two syringes (10), an upper module fixing frame (20) for fixing one end of the two syringes (10), and a lower module fixing frame (30) for fixing the other end of the two syringes (10) and guiding the liquid in the two syringes (10) to a nozzle (40);

the injector (10) comprises a cylindrical liquid storage part (11) for storing liquid and a push-pull rod (12) capable of performing piston movement in the liquid storage part (11), a flange part (13) is arranged at the end part of the opening end of the liquid storage part (11), the upper module fixing frame (20) is of a T-shaped structure, two through holes (21) are formed in the upper end face of the T-shaped structure, the two injectors (10) respectively penetrate through the two through holes (21), and the flange part (13) of the injector (10) is received on the upper end face of the T-shaped structure;

at least one first buckle (22) for fixing the syringe (10) is arranged on the upper end face of the T-shaped structure of the upper module fixing frame (20) beside each through hole (21), the first buckle (22) is clamped with the flange part (13) of the syringe (10), and the distance between the first buckle (22) and the central axis of the corresponding through hole (21) is smaller than the maximum distance between the outer side of the flange part (13) of the syringe (10) and the central axis of the corresponding through hole (21);

a second buckle (31) is arranged on the lower module fixing frame (30), a buckle assembly position (24) is arranged in the longitudinal part of the T-shaped structure of the upper module fixing frame (20), and the second buckle (31) is in clamping connection with the buckle assembly position (24);

the nozzle (40) ejects the liquid with an atomizing effect.

2. Duplex mixing syringe according to claim 1, wherein two mutually parallel hand rest straight edges (14) are provided on the flange portion (13) of each syringe (10), the first snap-fit (22) being snapped with the hand rest straight edges (14).

3. Duplex mixing syringe according to claim 1, wherein two first catches (22) for securing the same syringe (10) are provided beside each through hole (21).

4. Duplex mixing syringe according to claim 1, characterized in that the lower module holder (30) is provided with fitting holes (32) adapted to the luer heads of two syringes (10), a second buckle (31) protruding from the top surface of the lower module holder (30) is provided between the two fitting holes (32); the vertical portion of the T-shaped structure of the upper module fixing frame (20) is provided with a clamping structure (23), and a clamping assembly position (24) is arranged in the clamping structure (23).

5. Duplex mixing syringe according to claim 4, wherein the snap-fit position (24) is arranged inside the longitudinal part of the T-shaped structure in such a way that when the second snap-fit (31) is fitted into the snap-fit position (24), the luer heads of both syringes (10) are simultaneously automatically fitted into the two fitting holes (32) of the lower module holder (30).

6. The dual mixing syringe of claim 1, further comprising a syringe push-pull rod connection plate (50), the syringe push-pull rod connection plate (50) being configured to connect push-pull rods (12) of the two syringes (10) together.

7. Duplex mixing syringe according to claim 6, wherein the syringe push-pull rod connection plate (50) connects the push-pull rods (12) in such a way that the push-pull rods are always aligned.

8. Duplex mixing syringe according to claim 1, wherein the lower module holder (30) is provided with a curved channel connecting the two syringes (10) with the nozzle (40), respectively.

9. Duplex mixing syringe according to claim 1, wherein the syringe (10) is a syringe pre-packaged with a liquid, the syringe having identification information corresponding to the liquid.

10. Duplex mixing syringe according to any of claims 1-9, wherein the nozzle (40) is connected to the lower module holder (30) by means of an extension tube.