Double-needle-tube extruding and blending device
By designing a double needle extrusion mixing device, using a parallel syringe and a cross mixer, the bacterial contamination and structural damage problems during the gel mixing process are solved, and efficient and sterile gel mixing is achieved, suitable for different viscosity gel material.
Patent Information
- Application Number
- CN202420365397.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-27
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-02-27
AI Technical Summary
The prior art tends to cause bacterial contamination and gel structure damage when mixing gel components, resulting in unstable mixing process.
Design a double needle extrusion mixing device, including a first syringe and a second syringe connected in parallel, cross-mixed mixing is performed through a mixer, and efficient mixing is achieved using a Luer joint and a cross-mixed mixer, reducing external contact time and improving non-free Bacterization and mixing efficiency.
It achieves the mixing efficiency and sterilization of gel materials and solvents without destroying the gel structure, and is suitable for uniform mixing of gel materials of different viscosity.
Smart Images
Figure CN222150660U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical consumables, and in particular relates to a double-needle tube extrusion and mixing device. Background Art
[0002] Gel is a general term for semi-solid jelly filled with liquid and its dried form (dried gel). Gel is a three-dimensional network structure composed of polymer materials and water. Under appropriate conditions, polymer solutions and sols can lose fluidity and become elastic semi-solid. Gel can be used to form many drugs or chemicals for treating diseases and assisting examinations in life and medicine, such as for soft tissue repair and wound adhesion prevention.
[0003] Since gel undergoes a process of transformation from a solution to an elastic semi-solid state, how to efficiently and aseptically mix the various components of the gel becomes very important in the medical field. The existing technology is to mix the various components together, and short-term stirring can easily introduce bacteria, and the gel structure will be destroyed during the formation process, resulting in unstable gel properties. Utility Model Content
[0004] In view of the problems existing in the above-mentioned prior art, the utility model provides a double-needle extrusion mixing device. The technical problem to be solved by the utility model is how to achieve the aseptic mixing process without destroying the gel structure, so as to improve the mixing effect and mixing efficiency of the gel material and the solvent.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A double-needle extrusion mixing device comprises a first syringe, a second syringe, a mixer, a support frame and a pusher. The first syringe and the second syringe are connected in parallel and then in series with the mixer. The support frame is used to accommodate the first syringe and the second syringe. The pusher is used to control the first syringe and the second syringe to synchronously inject gel material into the mixer.
[0007] Furthermore, the first syringe, the second syringe and the mixer are connected via a Luer connector.
[0008] Furthermore, a channel is provided inside the mixer, and the diameter of the channel is 0.5-1.5 mm.
[0009] Furthermore, the mixer is a cross mixer including four branches.
[0010] Furthermore, the first syringe and the second syringe have two outlets respectively, and the outlets are connected to the branch via a Luer connector.
[0011] Furthermore, a sliding rod is arranged between the support frame and the pusher, and a limiting hole is provided on the support frame for limiting the sliding rod.
[0012] Furthermore, the first syringe includes a first needle tube and a first push rod, and the second syringe includes a second needle tube and a second push rod, the first needle tube and the second needle tube are inserted into the support frame; the bottom end of the first push rod is inserted into the first needle tube, and the top end of the first push rod is inserted into the pusher; the bottom end of the second push rod is inserted into the second needle tube, and the top end of the second push rod is inserted into the pusher.
[0013] Furthermore, the material of the support frame is any one of polypropylene copolymer, polycarbonate, polyoxymethylene, polyethylene, polypropylene-polylactic acid, and photosensitive resin.
[0014] Furthermore, sealing rings are provided at the bottom ends of the first push rod and the second push rod.
[0015] Furthermore, the pusher is provided with a first slot and a second slot, wherein the first slot is used to clamp the top end of the first push rod, and the second slot is used to clamp the top end of the second push rod.
[0016] Furthermore, the ratio of the labeled filling volume of the first syringe to that of the second syringe is between 1.0 and 3.0.
[0017] Compared with the prior art, the utility model has the following beneficial effects:
[0018] 1. The first syringe, the second syringe and the mixer form an integrated double-needle extrusion and mixing device, which greatly reduces the time of contact between the gel material and the outside world during the mixing process and improves the aseptic quality of the mixing process;
[0019] 2. Gel materials of different components enter the mixer from the first syringe and the second syringe and are fully mixed through the channels inside the mixer. Under the pressure of the syringe and the action of the staggered channels, the gel material mixing efficiency is higher and the effect is better;
[0020] 3. By changing the marked filling amount of the first syringe and the second syringe, as well as the different channel diameters of the mixer, it is possible to ensure that gel materials / liquids with different viscosities are mixed evenly. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;
[0022] Figure 2 for Figure 1 A partial enlarged view of point A in the middle.
[0023] The parts represented by the reference numerals in the figure are as follows:
[0024] 1-first syringe, 101-first needle tube, 102-first push rod, 2-second syringe, 201-second needle tube, 202-second push rod, 3-mixer, 4-support frame, 5-push device, 6-slide rod, 601-corner cone, 7-sealing ring, 8-Luer connector, 9-channel. DETAILED DESCRIPTION
[0025] The technical solution of the utility model is clearly and completely described below in conjunction with the accompanying drawings.
[0026] Example 1
[0027] like Figure 1 As shown, this embodiment provides the following technical solutions:
[0028] A double-needle tube extrusion and mixing device comprises a first syringe 1, a second syringe 2 and a mixer 3. The first syringe 1 and the second syringe 2 are connected in parallel to each other and then connected in series with the mixer 3.
[0029] Further, such as Figure 1 As shown, the mixer 3 has a special structure, with a channel 9 arranged inside. The diameter of the channel 9 is 0.5-1.5 mm. The channel 9 can be staggered or tortuous, thereby increasing the mixing path and time.
[0030] Gels of different components are drawn into the first syringe 1 and the second syringe 2 respectively, and then injected into the mixer 3. After passing through the staggered channels inside the mixer 3, the staggered mixing time of the two components is increased to achieve full mixing. Then, the gels are injected into the user's body through a needle from the other end of the mixer to complete the treatment.
[0031] Furthermore, the double-needle tube extrusion mixing device further includes a support frame 4, which is used to accommodate the first syringe 1 and the second syringe 2. The support frame 4 is made of any one of polypropylene copolymer, polycarbonate, polyoxymethylene, polyethylene, polypropylene polylactic acid, and photosensitive resin, and has a certain elasticity, so that the two syringes can be placed and removed through the gap generated by its own deformation.
[0032] Furthermore, the double-needle extrusion and mixing device also includes a pusher 5, and the pusher 5 is used to control the first syringe 1 and the second syringe 2 to synchronously inject the gel material into the mixer 3.
[0033] Furthermore, the first syringe 1 includes a first needle tube 101 and a first push rod 102, and the second syringe 2 includes a second needle tube 201 and a second push rod 202. The first needle tube 101 and the second needle tube 201 are inserted into the support frame 4; the bottom end of the first push rod 102 is inserted into the first needle tube 101, and the top end of the first push rod 102 is inserted into the pusher 5; the bottom end of the second push rod 202 is inserted into the second needle tube 201, and the top end of the second push rod 202 is inserted into the pusher 5.
[0034] Furthermore, a sealing ring 7 is disposed at the bottom end of each of the first push rod 102 and the second push rod 202 .
[0035] The needle tube is at least one of glass, polypropylene copolymer, polycarbonate, and polyoxymethylene. The Luer female head is a standard part, and the material is any one of the above materials, polypropylene copolymer, polycarbonate, polyoxymethylene, polypropylene, and polyethylene. The push rod is made of any one of polypropylene copolymer, polycarbonate, polyoxymethylene, polypropylene, and polyethylene. The sealing ring can be made into a rubber plug, and its material is butyl rubber, such as brominated butyl rubber and chlorobutyl rubber.
[0036] Furthermore, the first syringe 1, the second syringe 2 and the mixer 3 are connected via a Luer connector 8. The Luer connector is made of any one of polypropylene copolymer, polycarbonate, polyoxymethylene, polypropylene and polyethylene.
[0037] Furthermore, the Luer connector 8 includes a male head and a female head, the female head is connected to the needle tube, and the male head is connected to the mixer 3.
[0038] The mixer 3 is a cross mixer having four branches. The first syringe 1 and the second syringe 2 each have two outlets, and the outlets and the branches are connected via the Luer connector 8 .
[0039] Example 2
[0040] The difference from Example 1 is that, in this embodiment, a slide rod 6 is arranged between the support frame 4 and the pusher 5, and the support frame 4 structure has a limiting hole inside to limit the position of the slide rod 6, and the pusher 5 can slide vertically up and down along the limiting hole together with the slide rod 6.
[0041] like Figure 2 As shown, a pyramid 601 is provided at the bottom end of the slide rod 6 , and the diameter of the pyramid 601 is larger than the aperture of the limiting hole, thereby preventing the slide rod 6 from sliding out of the support frame 4 .
[0042] Example 3
[0043] The difference from Example 1 is that the pusher 5 is provided with a first slot and a second slot, the first slot is used to clamp the top end of the first push rod, and the second slot is used to clamp the top end of the second push rod.
[0044] The pusher material is any one of polypropylene copolymer, polycarbonate, polyoxymethylene, polyethylene, polypropylene, polylactic acid, and photosensitive resin, and has a certain elasticity, so that the first push rod and the second push rod can be clamped to ensure synchronous movement of the first push rod and the second push rod.
[0045] Example 4
[0046] A double-needle extrusion mixing device comprises a first syringe 1, a second syringe 2 and a mixer 3. The first syringe 1 and the second syringe 2 are connected in parallel to each other and then connected in series with the mixer 3. The ratio of the marked filling amount of the first syringe 1 to the second syringe 2 is 1.0, that is, the marked filling amount of the first syringe 1 and the second syringe 2 is the same.
[0047] Example 5
[0048] A double-needle extrusion mixing device comprises a first syringe 1, a second syringe 2 and a mixer 3. The first syringe 1 and the second syringe 2 are connected in parallel and then in series with the mixer 3. The ratio of the marked filling amount of the first syringe 1 to the second syringe 2 is 3.0, that is, the capacity of the first syringe 1 is 3 times the capacity of the second syringe 2.
[0049] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model are included in the protection scope of the utility model.
Claims
1. A double-needle tube extrusion mixing device, characterized in that: It comprises a first syringe, a second syringe, a mixer, a support frame and a pusher, wherein the first syringe and the second syringe are connected in parallel and then in series with the mixer, the support frame is used to accommodate the first syringe and the second syringe, and the pusher is used to control the first syringe and the second syringe to synchronously inject gel material into the mixer; A slide bar is arranged between the support frame and the pusher, and a limiting hole is provided on the support frame for limiting the slide bar.
2. The double-needle tube extrusion mixing device according to claim 1, characterized in that: The first syringe, the second syringe and the mixer are connected via a Luer connector.
3. The double-needle tube extrusion mixing device according to claim 2, characterized in that: The mixer is a cross mixer, comprising four branches; a channel is arranged inside the mixer, and the diameter of the channel is 0.5-1.5 mm.
4. The double-needle tube extrusion mixing device according to claim 3, characterized in that: The first syringe and the second syringe have two outlets respectively, and the outlets are connected to the branch through a Luer connector.
5. The double-needle tube extrusion mixing device according to claim 1, characterized in that: The first syringe includes a first needle tube and a first push rod, and the second syringe includes a second needle tube and a second push rod. The first needle tube and the second needle tube are inserted into the support frame; the bottom end of the first push rod is inserted into the first needle tube, and the top end of the first push rod is inserted into the pusher; the bottom end of the second push rod is inserted into the second needle tube, and the top end of the second push rod is inserted into the pusher.
6. The double-needle tube extrusion mixing device according to claim 5, characterized in that: The material of the support frame is any one of polypropylene copolymer, polycarbonate, polyoxymethylene, polyethylene, polypropylene-polylactic acid, and photosensitive resin.
7. The double-needle tube extrusion mixing device according to claim 5, characterized in that: Sealing rings are arranged at the bottom ends of the first push rod and the second push rod.
8. The double-needle tube extrusion mixing device according to claim 5, characterized in that: The pusher is provided with a first slot and a second slot, wherein the first slot is used to clamp the top end of the first push rod, and the second slot is used to clamp the top end of the second push rod.
9. The double-needle tube extrusion mixing device according to claim 1, characterized in that: The ratio of the labeled filling volume of the first syringe to that of the second syringe is between 1 / 3 and 3.0.