Dual syringe with guide structure

Abstract

The application provides a double syringe with a guide structure, which comprises a syringe module, a syringe fixing frame and two syringes, wherein the syringe fixing frame comprises two arm parts, the front ends of the two arm parts are spaced apart in the thickness direction, guide parts are arranged on the inner sides of the two arm parts, the guide parts comprise two first guide surfaces, buckles are arranged at the rear ends of the two first guide surfaces, and buckling positions are formed at the rear ends of the buckles; and a mixing connector, wherein the mixing connector comprises a mixing connector connecting part, the mixing connector connecting part comprises two side surfaces which extend rearward in the length direction from the main body part of the mixing connector, and buckle protrusions are arranged at the rear ends of the two side surfaces. The two first guide surfaces can be matched with the two syringes, so that the mixing connector connecting part is quickly aligned and then smoothly inserted into the syringe fixing frame, the buckle protrusions are quickly and accurately found and inserted into the buckling positions to complete buckling, and the quick installation of the syringe module and the mixing connector is realized.

Description

Technical Field

[0001] This application belongs to the field of medical devices, and specifically relates to a dual syringe containing a guide structure. Background Technology

[0002] Existing dual-syringe syringes typically require the components of the reagent bottle to be drawn into the syringe before use. Therefore, the mixing head and syringe module usually need to be assembled. In actual surgical use, the ease of assembly and prevention of installation errors are crucial. Current dual-syringe syringes usually use a movable Luer threaded head to connect to the reagent bottle. However, the movable Luer head is relatively small, resulting in limited operating space for tightening after connection, making operation inconvenient. Furthermore, rotation of the syringe during use may cause a loose connection between the syringe and the mixing head, leading to leakage, and in severe cases, even separation. Additionally, the assembly process requires aligning both Luer heads of the syringes and two holes in the mixing head simultaneously, which is time-consuming and extremely inconvenient.

[0003] In WO2019052510A1, the applicant designed a dual-stage mixing syringe that addresses the aforementioned problems. This syringe is simple in structure, easy to operate, quick to assemble, and effectively prevents rotation during use. By incorporating two longitudinal protrusions inside the upper module's mounting bracket and a snap-fit ​​part with a locking protrusion on the lower module's connector, the longitudinal protrusions of the mounting bracket engage with the snap-fit ​​protrusions of the connector, connecting the connector and the mounting bracket into a single unit. This solves the problems of cumbersome assembly and the dual-stage mixing syringe easily disintegrating under stress. However, during subsequent use, the applicant discovered that when inserting the snap-fit ​​part of the connector into the mounting bracket, it was difficult to quickly and accurately locate the longitudinal protrusions to achieve rapid engagement. Therefore, further improvements to the dual-stage mixing syringe are needed. Summary of the Invention

[0004] This application aims to provide a dual-type syringe with a guide structure, which allows the hybrid head connector to be quickly aligned and smoothly inserted into the syringe holder. The guide buckle protrusion quickly and accurately finds the buckle and inserts into the buckle position to complete the engagement of the two, thereby realizing the rapid installation of the syringe module and the hybrid head.

[0005] Embodiments of this application propose a dual syringe containing a guide structure, comprising:

[0006] A syringe module, comprising a syringe holder and two syringes, the two syringes being detachably connected to the syringe holder;

[0007] The syringe holder includes two opposing arms extending along the length direction, with their front ends spaced apart along the thickness direction, and guide portions provided on the inner surfaces of the two arms.

[0008] The guide portion is disposed between the two syringes. The guide portion includes two opposing first guide surfaces extending rearward along the length direction from the front ends of the inner surfaces of the two arms. The two first guide surfaces are inclined relative to a plane parallel to both the length and width directions. The two first guide surfaces are spaced apart in the thickness direction. A latch is provided at the rear end of the two first guide surfaces, and a locking position is formed at the rear end of the latch.

[0009] A hybrid connector includes a hybrid connector connecting portion, which includes two side surfaces extending rearward from the main body of the hybrid connector along the length direction. The two side surfaces face opposite directions in the thickness direction. A snap-fit ​​protrusion is provided at the rear end of the two side surfaces, and the snap-fit ​​protrusion connects the rear ends of the two side surfaces.

[0010] In at least one possible implementation, the guide portion and the hybrid connector portion are both located at the middle position in the width direction, and / or the guide portion and the hybrid connector portion are both located at the middle position in the thickness direction.

[0011] In at least one possible implementation, the buckle may be deformable; the dimension of the buckle protrusion in the thickness direction is larger than the gap in the thickness direction when the buckle is not deformed.

[0012] In at least one possible implementation, in the width direction, the outer side of the arm is larger than the size of the first guide surface, and the outer side of the arm is larger than the distance between the reservoirs of the two syringes.

[0013] In at least one possible embodiment, the front end of the outer peripheral surface of the liquid reservoir of the syringe is rounded.

[0014] In at least one possible implementation, when the two syringes are mounted on the syringe holder, the front end of the arm protrudes beyond or is flush with the front end of the syringe's reservoir; the front end of the syringe's reservoir protrudes beyond the latch.

[0015] In at least one possible implementation, the hybrid connector includes four sides extending rearward from the main body of the hybrid connector along the length direction, the four sides intersecting at the rear end, and snap-fit ​​protrusions provided on the rear ends of the two opposite sides in the thickness direction.

[0016] In at least one possible implementation, the guide portion includes a second guide surface formed on the first guide surface, the second guide surface extending along the length direction and inclined relative to a plane parallel to both the length direction and the thickness direction.

[0017] In at least one possible implementation, the distance between the reservoirs of the two syringes is 5 to 25 mm, and the distance between the latch and the outlet of the syringe is 5 to 80 mm.

[0018] In at least one possible implementation, the dual syringe further includes an anti-dislodgement component connected to the syringe, the anti-dislodgement component being capable of preventing the plunger of the syringe from disengaging from the reservoir of the syringe.

[0019] By adopting the above technical solution, a guide part is set in the syringe holder, which is located between two syringes. The guide part includes two first guide surfaces in opposite positions and a buckle set at the rear end of the two first guide surfaces. The two first guide surfaces can cooperate with the two syringes to restrict the hybrid connector in the width and thickness directions, so that the hybrid connector can only be inserted into the syringe holder in the length direction. It can also guide the buckle protrusion to quickly and accurately find the buckle and insert it into the buckle to complete the snap-fit. This realizes the rapid installation of the syringe module and the hybrid connector, and the two are tightly connected and not easy to loosen. The operation is simple. Attached Figure Description

[0020] Figure 1 A schematic diagram of a dual-syringe according to a first embodiment of this application is shown.

[0021] Figure 2 A cross-sectional view of the syringe module of a dual-syringe according to a first embodiment of this application is shown.

[0022] Figure 3 It shows Figure 2 A close-up view of the syringe holder.

[0023] Figure 4 A schematic diagram of the mixing head of a dual-syringe according to a first embodiment of this application is shown.

[0024] Figure 5 A cross-sectional view of the mixing head of a dual-syringe according to a first embodiment of this application is shown.

[0025] Figure 6 A schematic diagram of a dual-syringe according to a second embodiment of this application is shown.

[0026] Figure 7 A schematic diagram of the syringe holder and mixing head of a dual-syringe according to a second embodiment of this application is shown.

[0027] Figure 8 A schematic diagram of the syringe holder of a dual syringe according to a second embodiment of this application is shown.

[0028] Figure 9 and Figure 10 A cross-sectional view of the syringe holder of a dual syringe according to a second embodiment of this application is shown.

[0029] Figure 11 A schematic diagram of the mixing head of a dual-syringe according to a second embodiment of this application is shown.

[0030] Figure 12 and Figure 13 A schematic diagram of the anti-dislodgement component of a dual-syringe according to a second embodiment of this application is shown.

[0031] Explanation of reference numerals in the attached figures

[0032] 1 Syringe holder

[0033] 11 Arm section 111 Inner side 112 Second guide surface

[0034] 12 End cap 121 Hook 122 Syringe mounting hole

[0035] 13 Guiding Section 131 First Guiding Surface

[0036] 14 buckles, 141 buckle positions

[0037] 2 syringe 21 reservoir 22 outlet 23 plunger 24 connecting part 25 flange

[0038] 3. Mixing head 31. First liquid channel 32. Second liquid channel 33. Syringe connection hole 34. Mixing head connection part 341. Snap-on protrusion

[0039] 4 anti-slip components

[0040] 41 Bottom 411 Bottom Middle Section 412 Bottom Opening Section

[0041] 42 Left side wall portion 421 Left side wall arc segment 422 Left side wall opening segment

[0042] 43 Right side wall 44 Receiving groove

[0043] 5 push rod connector

[0044] X (length direction), Y (width direction), Z (thickness direction) Detailed Implementation

[0045] To more clearly illustrate the above-mentioned objectives, features, and advantages of this application, specific embodiments of this application are described in detail in conjunction with the accompanying drawings in this section. Besides the embodiments described in this section, this application can also be implemented in other different ways. Those skilled in the art can make corresponding improvements, modifications, and substitutions without departing from the spirit of this application; therefore, this application is not limited to the specific embodiments disclosed in this section. The scope of protection of this application should be determined by the claims.

[0046] Unless otherwise specified, the length direction X refers to the length direction of the dual-syringe, the width direction Y refers to the width direction of the dual-syringe, and the thickness direction Z refers to the thickness direction of the dual-syringe.

[0047] "Front" refers to the end of the dual-syringe used for drawing or discharging liquid along its length (X). "Rear" refers to the end of the dual-syringe where the plunger is inserted. "Left side" and "Right side" refer to... Figure 12 , Figure 13 Observe the left and right sides of the anti-slip component 4 from the angle shown.

[0048] In this application, the orientation or positional relationship indicated by terms such as "left," "right," "front," "back," "inner," and "outer" is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0049] (First Implementation)

[0050] like Figures 1 to 6 As shown, the first embodiment of this application proposes a dual-syringe with a guide structure. The dual-syringe with a guide structure includes a syringe holder 1, a mixing head 3, and two syringes 2. The two syringes 2 and the syringe holder 1 together can be referred to as a syringe module. The two syringes 2 can be mounted on the syringe holder 1, and the mixing head 3 can be connected to the front end of the syringes 2 and the syringe holder 1.

[0051] (Instrument holder)

[0052] like Figures 1 to 3 As shown, the syringe holder 1 includes an arm 11 extending along the length direction X and an end portion 12 extending along the width direction Y, with the arm 11 connected to the end portion 12.

[0053] The end 12 is connected to two arms 11, which extend along the length direction X and are opposite to each other. The front ends of the two arms 11 are spaced apart along the thickness direction Z. Each arm 11 has a guide portion 13 at its front end for guiding the hybrid head 3 into the space between the two arms 11. The guide portion 13 is located between the two syringes 2 of the syringe module and at a midpoint in the width direction Y and / or thickness direction Z.

[0054] The guide portion 13 includes two opposing first guide surfaces 131 extending rearward from the front ends of the inner surfaces 111 of the two arms 11 along the length direction X. The two first guide surfaces 131 are inclined relative to a plane parallel to both the length direction X and the width direction Y, and the two first guide surfaces 131 are spaced apart in the thickness direction Z. That is, from front to back, the distance between the two first guide surfaces 131 gradually decreases in the thickness direction Z. The first guide surface 131 can be a single inclined surface or multiple consecutive inclined surfaces. In this embodiment, the first guide surface 131 is a single inclined surface.

[0055] The inner side 111 at the front end of the arm 11 can form a buckle 14. The buckle 14 is the part with the smallest gap between the two opposing inner sides 111. The buckle 14 can be located at the rear end of the two first guide surfaces 131. A latching position 141 for receiving the buckle protrusion 341 is formed at the rear end of the buckle 14. The buckle 14 and the latching position 141 can be located at the middle position in the width direction Y and / or the thickness direction Z.

[0056] During the installation of the hybrid connector 3 onto the syringe holder 1, the inclined first guide surface 131 at the front end of the arm 11 can limit the hybrid connector connecting portion 34 in the thickness direction Z, and the two syringes 2 can limit the hybrid connector connecting portion 34 in the width direction Y, so that the hybrid connector connecting portion 34 is aligned along the length direction X and can be smoothly inserted into the syringe holder 1. The guide head 3's snap-fit ​​protrusion 341 quickly and accurately finds the snap-fit ​​14 and smoothly inserts into the buckle 141 to complete the snap-fit. When the snap-fit ​​protrusion 341 is inserted into the snap-fit ​​14, the snap-fit ​​14 can deform so that the snap-fit ​​protrusion 341 can pass through and lock in place, thereby fixing the hybrid connector 3 to the syringe holder 1.

[0057] In the width direction Y, the outer surface dimension of the arm 11 is larger than the dimension of the first guide surface 131, and the outer surface dimension of the arm 11 is larger than the distance between the liquid storage portions 21 of the two syringes 2. Thus, the arm 11 can clamp the two syringes 2, restricting the movement of the two syringes 2 in the thickness direction Z, preventing the syringes 2 from moving relative to the syringe holder 1 when the hybrid connector 3 is inserted into the syringe holder 1. At the same time, the two arms 11 and the two syringes 2 can restrict the hybrid connector 34 in the width direction Y and the thickness direction Z, preventing the hybrid connector 34 from sliding out of the gap between the syringes 2 and the arm 11 during the insertion process, so that the hybrid connector 34 can be smoothly inserted into the syringe holder 1 under the guidance of the two first guide surfaces 131 and the restriction of the two syringes 2.

[0058] like Figure 1 As shown, the end 12 of the syringe holder 1 is provided with two syringe mounting holes 122 for accommodating syringes 2. One syringe 2 can be installed in each syringe mounting hole 122, and the flange 25 of the syringe 2 can abut against the edge of the syringe mounting hole 122. The end 12 may be provided with a hook 121, which can lock the flange 25 of the syringe 2, so that the syringe 2 inserted into the syringe mounting hole 122 can be firmly fixed to the syringe holder 1, preventing the syringe 2 from rotating and loosening during use.

[0059] (syringe)

[0060] like Figure 1 , Figure 2 As shown, the syringe 2 includes a liquid reservoir 21, an outlet 22, a plunger 23, and a connecting part 24. The liquid reservoir 21 is cylindrical, and a flange 25 is provided at its rear end. The outlet 22 extends forward from the front end of the liquid reservoir 21. The plunger 23 is inserted into the liquid reservoir 21. Pushing or pulling the plunger 23 can cause the liquid in the liquid reservoir 21 to flow out of the outlet 22 or to be drawn into the liquid reservoir 21 from the outlet 22. The distance between the latch 14 and the outlet 22 can be 5 to 80 mm. This space can be used to guide the mixing head connecting part 34 into the syringe holder 1.

[0061] The two syringe mounting holes 122 are spaced apart, so that the distance between the liquid reservoirs 21 of the two syringes 2 can be, for example, 5 to 25 mm, and the guide portion 13 is disposed between the two syringes 2.

[0062] The connecting portion 24 is located radially outside the outlet portion 22. The connecting portion 24 can be annular, surrounding the outlet portion 22, and the connecting portion 24 and the outlet portion 22 are concentric circles. The outlet portion 22 and the connecting portion 24 can form a Luer female connector. The Luer female connector can be sealed to the Luer male connector, and the syringe 2 can be sealed to the mixing head 3 through the mating of the Luer connector. Furthermore, the mating of the Luer male connector and the Luer female connector can also serve a guiding function. When the connecting portion 34 of the mixing head enters the guide portion 13 of the syringe holder 1, the outlet portion 22 of the syringe enters the syringe connection hole 33 of the mixing head 3. The mating of the Luer male connector and the Luer female connector achieves a locking connection between the syringe 2 and the mixing head 3. Combined with the guiding function of the connecting portion 34 and the guide portion 13, the connection between the mixing head 3 and the syringe module is faster and tighter.

[0063] like Figure 1 As shown, the plungers 23 of the two syringes 2 can be connected by the plunger connector 5, so that the plungers 23 of the two syringes 2 can move synchronously.

[0064] The front end of the outer peripheral surface of the liquid reservoir 21 of the syringe 2 is rounded. During the process of inserting the mixing head connector 34 into the fixing frame, if the rear end of the mixing head connector 34 hits the front end surface of the liquid reservoir 21 of the syringe 2, the rounded corner can better guide the mixing head connector 34 to slide smoothly into the guide part 13.

[0065] (Mixed head)

[0066] like Figure 1 , Figure 4 , Figure 5 As shown in the cross-sectional view taken along the longitudinal direction of the mixing head 3, the mixing head is approximately triangular in shape. A first liquid channel 31 and a second liquid channel 32 are disposed within the internal cavity of the mixing head 3. The first liquid channel 31 and the second liquid channel 32 are close to each other in the direction of extension from the inlet end to the outlet end. The inlet end of the first liquid channel 31 and the inlet end of the second liquid channel 32 are separated by a predetermined distance. The first liquid channel 31 and the second liquid channel 32 are respectively connected to the outlet portions 22 of the two syringes 2, allowing the two syringes 2 to deliver liquid into the first liquid channel 31 and the second liquid channel 32 respectively.

[0067] The rear end of the hybrid head 3 is provided with two syringe connection holes 33. One syringe connection hole 33 surrounds the inlet end of the first liquid channel 31, and the other syringe connection hole 33 surrounds the inlet end of the second liquid channel 32. One syringe connection hole 33 and the inlet end of the first liquid channel 31 can form a concentric circle, and the other syringe connection hole 33 and the inlet end of the second liquid channel 32 can form a concentric circle.

[0068] The opening edge of the syringe connection hole 33 protrudes beyond the inlet ends of the first liquid channel 31 and the second liquid channel 32. When the syringe 2 is inserted into the syringe connection hole 33 and communicates with the first liquid channel 31 and the second liquid channel 32, the inner wall of the syringe connection hole 33 can guide the syringe 2. The syringe connection hole 33 and the inlet ends of the first liquid channel 31 and the second liquid channel 32 can be configured as a Luer male connector, allowing the syringe 2 to be sealed to the syringe connection hole 33.

[0069] The hybrid connector 3 is provided with a hybrid connector connecting portion 34, which extends rearward from the main body of the hybrid connector 3 along the length direction X. The hybrid connector connecting portion 34 includes two side surfaces that face opposite directions in the thickness direction Z. The hybrid connector connecting portion 34 can be inserted into the guide portion 13. The two side surfaces can be beveled and intersect at the rear end. When viewed along the width direction Y, the hybrid connector connecting portion 34 is generally triangular, and when viewed along the thickness direction Z, the hybrid connector connecting portion 34 is generally rectangular.

[0070] The hybrid connector 34 is located at the middle position in the width direction Y and / or thickness direction Z. The hybrid connector 34 corresponds to the guide part 13 of the syringe holder 1 in the width direction Y and / or thickness direction Z, which can better enable the hybrid connector 34 to be blindly inserted into the guide part 13.

[0071] A latching protrusion 341 is provided at the rear end of two sides along the thickness direction Z of the hybrid connector 34, connecting the rear ends of the two sides. The latching protrusion 341 can protrude from the two sides of the hybrid connector 34 along the thickness direction Z, and the dimension of the latching protrusion 341 in the thickness direction Z is larger than the gap in the thickness direction Z when the latch 14 is not deformed. During the installation of the hybrid connector 3 onto the syringe holder 1, the latching protrusion 341 can be inserted into and pass through the latch 14 into the latching position 141 through the elastic deformation of the latch 14. After the latch 14 returns to its original deformation, it can lock the latching protrusion 341, making it difficult for the latching protrusion 341 to disengage from the latching position 141, and making it difficult for the hybrid connector 3 to be pulled out. When the hybrid connector 3 is installed on the syringe module, the outlets 22 of the two syringes 2 are respectively inserted into the inlet ends of the first liquid channel 31 and the second liquid channel 32. The syringe connection hole 33 and the syringe connection part 24 can be interference-fitted to prevent leakage. With the hybrid connector 3 installed on the syringe module, the front end of the arm 11 protrudes from or is flush with the front end of the liquid reservoir 21 of the syringe 2; the front end of the liquid reservoir 21 of the syringe 2 protrudes from the buckle 14, so that the liquid reservoirs 21 of the two syringes 2 can cooperate with the guide 13 of the syringe holder 1, restricting the hybrid connector 34 in the width direction Y and the thickness direction Z, so that the hybrid connector 34 can be smoothly inserted into the syringe holder 1 along the length direction X, and the guide buckle protrusion 341 quickly and accurately finds the buckle and inserts into the buckle position 141 to complete the snap-fit.

[0072] The inclination angle of the first guide surface 131 relative to the plane parallel to both the length direction X and the width direction Y can be less than or equal to the inclination angle of the two sides of the hybrid connector 34 relative to the plane parallel to both the length direction X and the width direction Y. Preferably, the inclination angle of the first guide surface 131 relative to the plane parallel to both the length direction X and the width direction Y is less than 60°, thereby reducing the resistance encountered by the hybrid connector 34 during insertion and guiding the buckle protrusion 341 to smoothly find the buckle 14 and insert into the buckle position 141.

[0073] Both the guide part 13 and the hybrid connector 34 can guide the buckle protrusion 341 to quickly and accurately find the buckle 14 and insert it into the buckle position 141. Their shapes do not necessarily match, as long as the guide part 13 can accommodate the hybrid connector 34.

[0074] (Second Implementation)

[0075] In the second embodiment of the dual-syringe with a guide structure, the same reference numerals are used to denote the same or similar components as those in the first embodiment of the dual-syringe with a guide structure, and these will not be described again.

[0076] The difference between the dual-syringe with a guide structure in the second embodiment and the dual-syringe with a guide structure in the first embodiment includes the structure of the mixing head connector 34 and the guide section 13.

[0077] like Figures 6 to 13 As shown, the second embodiment of this application proposes a dual-syringe with a guide structure. The dual-syringe with a guide structure includes a syringe holder 1, a mixing head 3, and two syringes 2. The two syringes 2 and the syringe holder 1 together can be referred to as a syringe module. The two syringes 2 can be installed on the syringe holder 1, and the mixing head 3 can be connected to the front end of the syringes 2 and the syringe holder 1.

[0078] (Instrument holder)

[0079] like Figures 6 to 10 As shown, the two arms 11 can be connected together. The connected arms 11 can provide guidance when the syringe 2 is inserted into the syringe mounting hole 122, making it easier to keep the syringe 2 stable. The connecting part of the two arms 11 can be hollowed out, thereby reducing weight, saving materials, and facilitating observation of the liquid in the syringe at any time.

[0080] A second guide surface 112 is provided on the first guide surface 131 of the inner side surface 111 of the arm portion 11. Each first guide surface 131 may have two opposing second guide surfaces 112. The two second guide surfaces 112 are spaced apart in the width direction Y. The second guide surfaces 112 extend along the length direction X and are inclined relative to a plane parallel to both the length direction X and the thickness direction Z. That is, in the direction from front to back along the length direction X, the distance between the two opposing second guide surfaces 112 gradually decreases. The inclination angle of the two second guide surfaces 112 relative to the plane parallel to both the length direction X and the thickness direction Z is less than or equal to the inclination angle of the two sides of the coupling head connector 34 in the width direction Y relative to the plane parallel to both the length direction X and the thickness direction Z. Preferably, the inclination angle of the second guide surfaces 112 relative to the plane parallel to both the length direction X and the thickness direction Z is less than 60°, thereby reducing the resistance encountered by the coupling head connector 34 during insertion, and guiding the buckle protrusion 341 to smoothly find the buckle 14 and insert into the buckle position 141. During the installation of the hybrid connector 3 onto the syringe holder 1, the first guide surface 131, the second guide surface 112, and the two syringes 2 can restrict the hybrid connector connection part 34 in the thickness direction Z and the width direction Y, so that the hybrid connector connection part 34 can be quickly aligned along the length direction X and smoothly inserted into the syringe holder 1. The guide buckle protrusion 341 quickly and accurately finds the buckle 14 and inserts into the buckle position 141 to complete the snap-fit, realizing the blind insertion operation of the hybrid connector 3 and the syringe holder 1, and completing the fixed connection between the hybrid connector 3 and the syringe module.

[0081] In this embodiment, each of the two first guide surfaces 131 is provided with two opposing second guide surfaces 112. However, in other possible embodiments, only one first guide surface 131 may be provided with two opposing second guide surfaces 112, and the other first guide surface 131 may not be provided with a second guide surface 112. Alternatively, one second guide surface 112 may be provided on each of the two first guide surfaces 131.

[0082] With the hybrid head 3 installed on the syringe module, the buckle protrusion 341 can be inserted into and pass through the buckle 14 into the buckle position 141 through the elastic deformation of the buckle 14. After the buckle 14 returns to its original deformation, it can lock the buckle protrusion 341, making it difficult for the buckle protrusion 341 to come out of the buckle position 141. The hybrid head 3 is locked with the syringe module and is not easy to pull out.

[0083] (Mixed head)

[0084] like Figure 6 , Figure 7 and Figure 11 As shown, the hybrid connector 34 includes four sides extending rearward from the main body of the hybrid connector 3 along the length direction X. The four sides intersect at the rear end, and a snap-fit ​​protrusion 341 is provided on the rear end of the two opposite sides in the thickness direction Z.

[0085] The two sides of the hybrid connector 34 along the width direction Y can slide under the guidance of the second guide surface 112, and the two sides of the hybrid connector 34 along the thickness direction Z can slide under the guidance of the first guide surface 131, thereby guiding the buckle protrusion 341 to quickly and accurately find the buckle 14 and insert it into the buckle position 141 to complete the snap-fit, realizing the rapid installation of the hybrid connector 3 and the syringe holder 1.

[0086] The snap-fit ​​protrusion 341 can protrude from both sides of the hybrid connector 34 along the thickness direction Z. When the hybrid connector 3 is installed in the syringe module, the snap-fit ​​protrusion 341 can be inserted into and pass through the snap-fit ​​insertion position 141 by the elastic deformation of the snap-fit ​​14. After the snap-fit ​​14 returns to its original deformation, it can lock the snap-fit ​​protrusion 341, making it difficult for the snap-fit ​​protrusion 341 to come out of the insertion position 141. The hybrid connector 3 is locked to the syringe module and is not easy to pull out.

[0087] During the installation of the hybrid connector 3 onto the syringe module, the first guide surface 131 and the second guide surface 112 can restrict the hybrid connector 34 in the thickness direction Z and the width direction Y, as well as restrict the two syringes 2 in the width direction Y. This allows the hybrid connector 34 to be quickly aligned along the length direction X and smoothly inserted into the syringe holder 1. The guide buckle protrusion 341 quickly and accurately finds the buckle 14 and easily inserts into the buckle position 141 to form a strong locking structure, achieving a stable connection and convenient operation.

[0088] (Anti-detachment component)

[0089] like Figure 6 , Figure 12 and Figure 13 As shown, the flange 25 at the rear end of the liquid storage section 21 is connected to an anti-detachment component 4. The anti-detachment component 4 can prevent the push rod 23 from coming out of the liquid storage section 21. The hook 121 can hold the anti-detachment component 4, so that the syringe 2 inserted into the syringe mounting hole 122 can be firmly fixed to the syringe holder 1.

[0090] The anti-detachment component 4 includes a bottom 41, a left side wall 42, and a right side wall 43. The left side wall 42 and the right side wall 43 are respectively connected to both sides of the bottom 41 to define a receiving groove 44, which is used to receive at least a portion of the flange 25. The inner circumferential surface of the bottom of the receiving groove 44 and a section of the outer circumferential surface of the flange 25 cooperate with each other, preventing the flange 25 and the anti-detachment component 4 from rotating relative to each other. For example, the inner circumferential surface of the bottom 41 and the flange 25 have the same non-circular shape.

[0091] The bottom 41 includes a bottom middle section 411 and a bottom opening section 412. When the anti-detachment component 4 is installed in the syringe 2, the bottom middle section 411 can be matched with the arc-shaped portion of the flange 25.

[0092] The left wall portion 42 is generally plate-shaped, comprising an arc-shaped segment 421 and an open segment 422. The open segment 422 can be directly connected to both ends of the arc-shaped segment 421, meaning there is no transition section between them. The inner circumferential surface of the arc-shaped segment 421 can be arc-shaped, while the radially inner surface of the open segment 422 can be straight. The open segment 422 forms an opening, the radial dimension of which gradually decreases from the opening side towards the side containing the arc-shaped segment 421.

[0093] The inner circumferential surface of the arc-shaped segment 421 on the left side wall can form a superior arc, that is, the central angle of the arc-shaped inner circumferential surface of the arc-shaped segment 421 on the left side wall is greater than 180 degrees.

[0094] With the anti-detachment component 4 installed on the syringe 2, the left side wall portion 42 is located in front of the flange 25. The inner circumferential surface of the arc-shaped section 421 of the left side wall portion can contact the outer circumferential wall of the liquid storage portion 21. The arc-shaped section 421 of the left side wall portion can lock the liquid storage portion 21, so that the anti-detachment component 4 can be firmly connected to the syringe 2. The anti-detachment component 4 and the syringe 2 are not easy to loosen after installation.

[0095] The right side wall 43 is generally U-shaped. The width of the U-shaped recess in the right side wall 43 is smaller than the radial dimension of the end of the push rod 23 but larger than the radial dimension of the rod portion of the push rod 23. This prevents the end of the push rod 23 from passing through the recess, while the rod portion of the push rod 23 can pass through the recess smoothly without friction, thus not affecting the pulling operation of the push rod 23. When the anti-dislodgement component 4 is installed in the syringe 2, the right side wall 43 can prevent the push rod 23 from detaching from the liquid reservoir 21 when the push rod 23 is pulled out.

[0096] It is understood that a piston may be mounted or integrally formed on the end of the push rod 23. In particular, the phrase "the width of the U-shaped recess of the right side wall 43 is less than the radial dimension of the end of the push rod 23" can be interpreted as the width of the U-shaped recess of the right side wall 43 being less than the diameter of the piston at the end of the push rod 23.

[0097] The dual mixer with a guiding structure of this application has the following advantages and outstanding effects:

[0098] 1. By setting a guide part in the syringe holder, the guide part is located between two syringes. The guide part includes two first guide surfaces in opposite positions and a buckle set at the rear end of the two first guide surfaces. The two first guide surfaces can cooperate with the two syringes to restrict the connecting part of the hybrid head in the width and thickness directions, so that the connecting part of the hybrid head can be quickly aligned along the length direction and smoothly inserted into the syringe holder. The guide buckle protrusion quickly and accurately finds the buckle and inserts into the buckle to complete the snap-fit, realizing the rapid installation of the syringe module and the hybrid head. The connection between the two is tight and not easy to loosen, and the operation is simple.

[0099] 2. The Luer female connector of the syringe and the Luer male connector of the mixing head cooperate to play a secondary guiding role, realizing the locking connection between the syringe and the mixing head. In conjunction with the guiding role of the connecting part and the guide part of the mixing head, the connection between the mixing head and the syringe module is tighter, achieving the effect of sealing the liquid and avoiding leakage problems.

[0100] 3. The buckle can deform, making the connection between the mixing head and the syringe module tighter and less prone to loosening. It also enables a detachable connection between the two. In cases where the dual syringe nozzle is prone to clogging and replacing the nozzle cannot solve the clogging problem, a new mixing head can be replaced.

[0101] 4. The anti-detachment component can be easily and firmly fixed to the syringe, and is not easy to fall off during use; when the syringe is being withdrawn, the anti-detachment component can prevent the syringe plunger from coming out of the liquid reservoir, effectively preventing the plunger and liquid reservoir from separating during use or transportation; and the installation and removal of the anti-detachment component from the syringe is simple and convenient.

[0102] It should be understood that at least some aspects or features of the above-described implementation methods, embodiments, or examples can be appropriately combined.

[0103] It is understood that, in this application, when the number of parts or components is not specifically limited, the number can be one or more, where multiple refers to two or more. For cases where the number of parts or components shown in the drawings and / or described in the specification is, for example, two, three, four, etc., this specific number is generally exemplary and not restrictive, and can be understood as multiple, i.e., two or more; however, this does not mean that this application excludes the case of one.

[0104] In this application, unless otherwise expressly stated or limited, terms such as "installation," "assembly," "connection," "linking," "joining," "linking," "abutment," "communication," "connection," "conduction," "fixing," and "fastening" should be interpreted broadly, for example, they can be direct or indirect. For instance, regarding connection, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components, unless otherwise expressly stated or limited. For instance, regarding communication / conduction, it can be direct communication / conduction or indirect communication / conduction through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0105] In this application, unless otherwise expressly stated or limited, a component being disposed / installed / located / enclosed / placed within, inside, or incorporated in another component can be either of the following two situations: a portion or a majority of the one component is located within the other component; or the one component is completely enclosed within the other component.

[0106] Although the present application has been described in detail using the above embodiments, it will be apparent to those skilled in the art that the present application is not limited to the embodiments described herein. The present application can be modified and implemented as alternative embodiments without departing from the spirit and scope of the present application as defined by the claims. Therefore, the description in this specification is for illustrative purposes only and does not have any limiting meaning for the present application.

Claims

1. A dual-syringe syringe containing a guiding structure, characterized in that, It includes: The syringe module includes a syringe holder (1) and two syringes (2), which are detachably connected to the syringe holder (1). The syringe holder (1) includes two opposing arms (11) extending along the length direction (X), with the front ends of the two arms (11) spaced apart along the thickness direction (Z), and guides (13) provided on the inner sides (111) of the two arms (11). The guide portion (13) is disposed between the two syringes (2). The guide portion (13) includes two opposing first guide surfaces (131) extending rearward along the length direction (X) from the front ends of the inner surfaces (111) of the two arms (11). The two first guide surfaces (131) are inclined relative to a plane parallel to both the length direction (X) and the width direction (Y). The two first guide surfaces (131) are spaced apart in the thickness direction (Z). A latch (14) is provided at the rear end of the two first guide surfaces (131), and a latch (141) is formed at the rear end of the latch (14). The guide portion (13) also includes a second guide surface (112) formed on the first guide surfaces (131). The second guide surface (112) extends along the length direction (X) and is inclined relative to a plane parallel to both the length direction (X) and the thickness direction (Z). The mixing head (3) has two syringe connection holes (33) at its rear end. The mixing head (3) includes a mixing head connection part (34), which includes two side surfaces extending rearward from the main body of the mixing head (3) along the length direction (X). The two side surfaces face opposite directions in the thickness direction (Z). A snap-fit ​​protrusion (341) is provided at the rear end of the two side surfaces, and the snap-fit ​​protrusion (341) connects the rear ends of the two side surfaces.

2. The dual syringe with a guide structure according to claim 1, characterized in that, The guide portion (13) and the hybrid connector portion (34) are both located at the middle position in the width direction (Y), and / or the guide portion (13) and the hybrid connector portion (34) are both located at the middle position in the thickness direction (Z).

3. The dual syringe with a guide structure according to claim 1, characterized in that, The buckle (14) can be deformed; the size of the buckle protrusion (341) in the thickness direction (Z) is larger than the gap in the thickness direction (Z) when the buckle (14) is not deformed.

4. The dual syringe with a guide structure according to claim 1, characterized in that, In the width direction (Y), the outer side of the arm (11) is larger than the size of the first guide surface (131), and the outer side of the arm (11) is larger than the distance between the liquid reservoirs (21) of the two syringes (2).

5. The dual syringe with a guide structure according to claim 1, characterized in that, The front end of the outer peripheral surface of the liquid reservoir (21) of the syringe (2) is rounded.

6. The dual syringe with a guide structure according to claim 1, characterized in that, When the two syringes (2) are mounted on the syringe holder (1), the front end of the arm (11) protrudes beyond the front end of the liquid reservoir (21) of the syringe (2) or is flush with the front end of the liquid reservoir (21) of the syringe (2); the front end of the liquid reservoir (21) of the syringe (2) protrudes beyond the buckle (14).

7. The dual syringe with a guide structure according to claim 1, characterized in that, The hybrid connector (34) includes four sides extending rearward from the main body of the hybrid connector (3) along the length direction (X), the four sides intersecting at the rear end, and a snap-fit ​​protrusion (341) is provided on the rear end of the two opposite sides in the thickness direction (Z).

8. The dual syringe with a guide structure according to claim 1, characterized in that, The distance between the liquid reservoirs (21) of the two syringes (2) is 5 to 25 mm, and the distance between the buckle (14) and the outlet (22) of the syringe (2) is 5 to 80 mm.

9. The dual syringe with a guide structure according to claim 1, characterized in that, The dual syringe also includes an anti-dislodgement component (4), which is connected to the syringe (2) and can prevent the plunger (23) of the syringe (2) from disengaging from the liquid reservoir (21) of the syringe (2).

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