CN204816256U - Collagen raw materials extrusion agitating unit - Google Patents
Collagen raw materials extrusion agitating unit Download PDFInfo
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- CN204816256U CN204816256U CN201520074322.0U CN201520074322U CN204816256U CN 204816256 U CN204816256 U CN 204816256U CN 201520074322 U CN201520074322 U CN 201520074322U CN 204816256 U CN204816256 U CN 204816256U
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Abstract
The utility model discloses a collagen raw materials extrusion agitating unit, it is including power unit and extrusion rabbling mechanism, concrete the bottom plate and connect the fixing base and with the double piston rod cylinder of being connected fixing base fixed connection, the double piston rod cylinder includes left cylinder and right cylinder, on a left side cylinder and the right cylinder respectively the symmetry be provided with left cylinder pipe, right side cylinder pipe, left side piston rod of the cylinder and right piston rod of the cylinder, left side cylinder pipe and right cylinder union coupling have manual control valve, left side piston rod of the cylinder and right piston rod of the cylinder are connected with a left side and impel the board and the right side to impel the board, left side cylinder and right cylinder fixedly connected with fixed block, the symmetry is provided with left needle tubing in the fixed block, right side needle tubing and locating piece, be provided with the hose in the locating piece, the rear side of fixed block is connected with compression screw, the both sides of fixed block are provided with left guide bar and right guide bar. The beneficial effect of the utility model: this device can be safely, reliable and quick even with the mixture stirring of collagen with acid solution.
Description
Technical field
The utility model relates to machinery manufacturing technology field, specifically, relates to a kind of collagen raw material extruding agitating device.
Background technology
Artificial neuron sheath pipe is often used in neurologic defect prosthesis, raw material-the collagen sources of this product is in ox tendon, through being processed into spongy collagen, then extrude with acid solution to stir and make the high starchiness collagen of viscosity, the starchiness collagen obtained is injected tubular die, after freeze drying, makes finished product.The finished product that this mode obtains has high-purity, easily to absorb and feature that unicity is high, is the verified relieved material of clinical case.
Collagen raw material extruding agitating device is the servicing unit producing neurolemma pipe product, and neurolemma pipe product material derives from collagen raw material and the mixed material of acid solution, and its viscosity is high.Therefore, this product cannot lean at all and manually stir in a reservoir, and due to its high viscosity, existing agitating device is not well positioned to meet it and stirs requirement in the market.
For the problem described in above-mentioned correlation technique, at present effective solution is not yet proposed.
Utility model content
For problem above-mentioned in correlation technique, the utility model proposes a kind of collagen raw material extruding agitating device, can also rapidly and uniformly the mixture of collagen and acid solution be stirred safely, reliably.
For realizing above-mentioned technical purpose, the technical solution of the utility model is achieved in that
A kind of collagen raw material extruding agitating device, the connection fixing base comprising base plate and be fixedly installed on described base plate and the double piston-rod cylinder be fixedly connected with described connection fixing base, described double piston-rod cylinder comprises left cylinder and right cylinder symmetrically arranged with described left cylinder, wherein, described left cylinder and described right cylinder are symmetrically arranged with left cylinder tube respectively, right cylinder tube, left cylinder piston rod and right cylinder piston rod, described left cylinder and described right cylinder are connected with hand control valve by described left cylinder tube and described right cylinder tube, described hand control valve is provided with control valve hand and the main tracheae that is connected with source outlet, described left cylinder and described right cylinder are fixedly connected with left pushing plate and right pushing plate by described left cylinder piston rod and described right cylinder piston rod, simultaneously, described left cylinder and described right cylinder are provided with cylinder end piece, described left cylinder and described right cylinder are fixedly connected with fixed block by described cylinder end piece, the upper surface of described fixed block is provided with an arc groove, left needle tubing and right needle tubing is symmetrically arranged with in described arc groove, left needle tubing piston and right needle tubing piston is respectively arranged with and its upper surface is also provided with the compact heap matched with it in described left needle tubing and described right needle tubing, the middle part of described arc groove is provided with a groove, described groove internal fixtion is provided with a positioning block, the upper surface of described locating piece is provided with a holding tank, a flexible pipe be connected with described left needle tubing and described right needle tubing is provided with in described holding tank, and, the rear side of described fixed block is fixedly connected with clamping screw, the bilateral symmetry of described fixed block is provided through the left guide post of described left pushing plate and described right pushing plate and right guide post.
Further, the standard medical needles pipe of described left needle tubing and described right needle tubing to be diameter be 22mm.
Further, the standard medical needles pipe piston of described left needle tubing piston and described right needle tubing piston to be diameter be 20mm.
Further, the standard plastic pipe of described flexible pipe to be diameter be 6mm.
Further, described connection fixing base is L-type holder, and the upper and lower side of described L-type holder is respectively arranged with two through hole, and described L-type holder is fixedly connected with described base plate and described double piston-rod cylinder respectively by described through hole.
Further, described cylinder end piece is provided with screwed hole, described connection fixing base is connect by the screwed hole on described through hole and described cylinder end piece and described double piston-rod cylinders.
Further, the end of described left cylinder piston rod and described right cylinder piston rod is provided with screw thread, is connected respectively by left cylinder piston rod described in described screw thread and described right cylinder piston rod with described left pushing plate and described right pushing plate bolt.
Further, the link of described left guide post and described right guide post and described fixed block is provided with screw thread, the other end of described left guide post and the relatively described fixed block of described right guide post is polished rod, and described polished end is respectively charged in described left pushing plate and described right pushing plate and is slidably connected with described left pushing plate and described right pushing plate.
Further, the top of described control valve hand handle is provided with circular control valve lever head, and described hand control valve and described control valve lever head are all threaded with described control valve hand handle.
Further, the upper and lower side of described left pushing plate and described right pushing plate is provided with top bar hole and hole of getting out of a predicament or an embarrassing situation respectively, wherein, polyethylene lining is provided with in described hole of topping bar, described hole of topping bar is slidably connected by described polyethylene lining and described left guide post and described right guide post, meanwhile, get out of a predicament or an embarrassing situation described in left cylinder piston rod described in Kong Zeyu and described right cylinder piston rod is fixedly connected with.
Further, described hand control valve is provided with left pore, right pore, air admission hole and steam vent, wherein, described left pore is connect by described left cylinder tube and described left cylinders, described right pore is connect by described right cylinder tube and described right cylinders, and described air admission hole is connected with source outlet by described main tracheae.
Further, described clamping screw comprise T-shaped hand and with described T-shaped hand the semicircle spherical base be wholely set.
Further, the upper surface of described compact heap is fixedly installed an anti-rotation compact heap, wherein, the upper surface of described anti-rotation compact heap is provided with a spherical concave surface, the semicircle spherical bottom of described clamping screw is linked with the spherical concave surface of described anti-rotation compact heap and is connected, further, the lower surface of described anti-rotation compact heap is provided with the anti-skidding sharp groove of two circles.
Further, described clamping screw is fixedly connected with clamping screw fixed mount.
Further, the termination symmetry of described double piston-rod cylinder is fixedly installed left limit cover and right limit cover, and wherein, the material of described left limit cover and described right limit cover is polythene material.
The beneficial effects of the utility model: this device has simple, the cheap for manufacturing cost and good practical advantages of structure, the mixture of collagen and acid solution can also stir safely, reliably by rapidly and uniformly, its cylinder piston rod can move repeatedly, drive agitating device repeatedly to extrude, solve the difficult problem that manually cannot stir in a reservoir.Therefore, this device is made to have higher cost performance and the market competitiveness.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the front view of the collagen raw material extruding agitating device according to the utility model embodiment;
Fig. 2 is the top view of the collagen raw material extruding agitating device according to the utility model embodiment;
Fig. 3 is the C-C sectional view of the collagen raw material extruding agitating device according to the utility model embodiment;
Fig. 4 is the B-B sectional view of the collagen raw material extruding agitating device according to the utility model embodiment.
In figure:
1, left needle tubing; 2, right needle tubing; 3, left needle tubing piston; 4, right needle tubing piston; 5, left pushing plate; 6, right pushing plate; 7, flexible pipe; 8, locating piece; 9, fixed block; 10, compact heap; 11, clamping screw; 12, left cylinder piston rod; 13, right cylinder piston rod; 14, left limit cover; 15, right limit cover; 16, left guide post; 17, right guide post; 18, double piston-rod cylinder; 19, main tracheae; 20, control valve hand handle; 21, hand control valve; 22, left cylinder tracheae; 23, right cylinder tracheae; 24, cylinder end piece; 25, connection fixing base; 26, base plate; 27, clamping screw fixed mount; 28, anti-rotation compact heap.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art obtain, all belongs to the scope of the utility model protection.
As Figure 1-4, a kind of collagen raw material extruding agitating device according to embodiment of the present utility model, the connection fixing base 25 comprising base plate 26 and be fixedly installed on described base plate 26 and the double piston-rod cylinder 18 be fixedly connected with described connection fixing base 25, described double piston-rod cylinder 18 comprises left cylinder and right cylinder symmetrically arranged with described left cylinder, wherein, described left cylinder and described right cylinder are symmetrically arranged with left cylinder tube 22 respectively, right cylinder tube 23, left cylinder piston rod 12 and right cylinder piston rod 13, described left cylinder and described right cylinder are connected with hand control valve 21 by described left cylinder tube 22 and described right cylinder tube 23, described hand control valve 21 is provided with control valve hand 20 and the main tracheae 19 that is connected with source outlet, described left cylinder and described right cylinder are fixedly connected with left pushing plate 5 and right pushing plate 6 by described left cylinder piston rod 12 and described right cylinder piston rod 13, simultaneously, described left cylinder and described right cylinder are provided with cylinder end piece 24, described left cylinder and described right cylinder are fixedly connected with fixed block 9 by described cylinder end piece 24, the upper surface of described fixed block 9 is provided with an arc groove, left needle tubing 1 and right needle tubing 2 is symmetrically arranged with in described arc groove, left needle tubing piston 3 and right needle tubing piston 4 is respectively arranged with and its upper surface is also provided with the compact heap 10 matched with it in described left needle tubing 1 and described right needle tubing 2, the middle part of described arc groove is provided with a groove, described groove internal fixtion is provided with a positioning block 8, the upper surface of described locating piece 8 is provided with a holding tank, a flexible pipe 7 be connected with described left needle tubing 1 and described right needle tubing 2 is provided with in described holding tank, and, the rear side of described fixed block 9 is fixedly connected with clamping screw 11, the bilateral symmetry of described fixed block 9 is provided through left guide post 16 and the right guide post 17 of described left pushing plate 5 and described right pushing plate 6.
In addition in a specific embodiment described left needle tubing 1 and described right needle tubing 2 for diameter be the standard medical needles pipe of 22mm.
In addition, in a specific embodiment, described left needle tubing piston 3 and described right needle tubing piston 4 for diameter be the standard medical needles pipe piston of 20mm.
In addition, in a specific embodiment, described flexible pipe 7 for diameter be the standard plastic pipe of 6mm.
In addition, in a specific embodiment, described connection fixing base 25 is L-type holder, and the upper and lower side of described L-type holder is respectively arranged with two through hole, and described L-type holder is fixedly connected with described base plate 26 and described double piston-rod cylinder 18 respectively by described through hole.
In addition, in a specific embodiment, described cylinder end piece 24 is provided with screwed hole, described connection fixing base 25 is connected with described double piston-rod cylinder 18 by the screwed hole on described through hole and described cylinder end piece 24.
In addition, in a specific embodiment, the end of described left cylinder piston rod 12 and described right cylinder piston rod 13 is provided with screw thread, is connected respectively by cylinder piston rod 12 left described in described screw thread and described right cylinder piston rod 13 with described left pushing plate 5 and described right pushing plate 6 bolt.
In addition, in a specific embodiment, described left guide post 16 and described right guide post 17 are provided with screw thread with the link of described fixed block 9, the other end of described left guide post 16 and the relatively described fixed block 9 of described right guide post 17 is polished rod, and described polished end is respectively charged in described left pushing plate 5 and described right pushing plate 6 and is slidably connected with described right pushing plate 6 with described left pushing plate 5.
In addition, in a specific embodiment, described control valve hand is provided with circular control valve lever head the top of 20, and described hand control valve 21 and described control valve lever head are all threaded with described control valve hand handle.
In addition, in a specific embodiment, the upper and lower side of described left pushing plate 5 and described right pushing plate 6 is provided with top bar hole and hole of getting out of a predicament or an embarrassing situation respectively, wherein, polyethylene lining is provided with in described hole of topping bar, described hole of topping bar is slidably connected mutually by described polyethylene lining and described left guide post 16 and described right guide post 17, meanwhile, described in get out of a predicament or an embarrassing situation left cylinder piston rod 12 described in Kong Zeyu and described right cylinder piston rod 13 be fixedly connected with.
In addition, in a specific embodiment, described hand control valve 21 is provided with left pore, right pore, air admission hole and steam vent, wherein, described left pore is connect with described left cylinders by described left cylinder tube 22, described right pore is connect with described right cylinders by described right cylinder tube 23, and described air admission hole is connected with source outlet by described main tracheae 19.
In addition, in a specific embodiment, described clamping screw 11 comprise T-shaped hand and with described T-shaped hand the semicircle spherical base be wholely set.
In addition, in a specific embodiment, the upper surface of described compact heap 10 is fixedly installed an anti-rotation compact heap 28, wherein, the upper surface of described anti-rotation compact heap 28 is provided with a spherical concave surface, the semicircle spherical bottom of described clamping screw 11 is linked with the described spherical concave surface of described anti-rotation compact heap 28 and is connected, and the lower surface of described anti-rotation compact heap 28 is provided with the anti-skidding sharp groove of two circles.
In addition, in a specific embodiment, described clamping screw 11 is fixedly connected with clamping screw fixed mount 27.
In addition, in a specific embodiment, the termination symmetry of described double piston-rod cylinder 18 is fixedly installed left limit cover 14 and right limit cover 15, and wherein, the material of described left limit cover 14 and described right limit cover 15 is polythene material.
Conveniently understand technique scheme of the present utility model, below by way of in concrete occupation mode, technique scheme of the present utility model is described in detail.
When specifically using, the air inlet of described hand control valve is pressed into the compressed air of 0.6Mpa by main tracheae, thus change the position of hand control valve, and then be with dynamic air cylinder tracheae air inlet or exhaust, double piston-rod cylinder is made to drive piston rod work, make the pushing plate be fixedly connected with it promote needle tubing piston and stir fusion process by the circular hole of two needle tubing termination internal diameter 2mm to complete to extrude with certain stroke extrusion of water-containing collagen, concrete, load in left needle tubing after the collagen raw material of certain mass is mixed with acid solution, and then move right under the promotion of described left pushing plate, the 2mm circular hole simultaneously collagen being pressed through left needle tubing to be entered in right needle tubing by described flexible pipe and makes described right needle tubing piston extend the extruding stirring work of a stroke to the right.
Otherwise to sum up state Machine Movement Process, described right needle tubing piston is moved to the left under the promotion of right pushing plate, the 2mm circular hole simultaneously collagen being pressed through right needle tubing is entered in left needle tubing by described flexible pipe, and makes left needle tubing piston extend the extruding stirring work of another stroke left.
At work, locating piece is fixed on described left needle tubing and right needle tubing, and left needle tubing and right needle tubing firmly compress by compact heap under the effect of clamping screw.Left pushing plate and right pushing plate are then connected on left cylinder piston rod and right cylinder piston rod, in stroke action, rely on left limit cover and right limit cover to complete limit function.
Left pushing plate and right pushing plate rely on the left guide post of part and right guide post to play guide effect.Left cylinder piston rod and right cylinder piston rod have idle stroke to be 10.5mm, its impulse stroke is overlapped by left limit in addition and the restriction of right limit cover, makes the bottom of the top of left needle tubing piston and right needle tubing piston and described left needle tubing and described right needle tubing have the distance of 2.5mm all the time.Therefore, protocollagen material extruding agitating device is all safe under any running status.
At work, described double piston-rod cylinder passes through main tracheae to gas, thus pull control valve hand handle, given vent to anger in gas outlet on hand control valve and the air inlet of left cylinder tracheae, and then left cylinder piston rod is moved right, right cylinder completes one stroke by right cylinder tracheae return-air and vent simultaneously.
In sum, this device has simple, the cheap for manufacturing cost and good practical advantages of structure, the mixture of collagen and acid solution can also stir safely, reliably by rapidly and uniformly, its cylinder piston rod can move repeatedly, drive agitating device repeatedly to extrude, solve the difficult problem that manually cannot stir in a reservoir.Therefore, this device is made to have higher cost performance and the market competitiveness.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (15)
1. a collagen raw material extruding agitating device, it is characterized in that, the connection fixing base (25) comprising base plate (26) and be fixedly installed on described base plate (26) and the double piston-rod cylinder (18) be fixedly connected with described connection fixing base (25), described double piston-rod cylinder (18) comprises left cylinder and right cylinder symmetrically arranged with described left cylinder, wherein, described left cylinder and described right cylinder are symmetrically arranged with left cylinder tube (22) respectively, right cylinder tube (23), left cylinder piston rod (12) and right cylinder piston rod (13), described left cylinder and described right cylinder are connected with hand control valve (21) by described left cylinder tube (22) and described right cylinder tube (23), the main tracheae (19) described hand control valve (21) being provided with control valve hand handle (20) and being connected with source outlet, described left cylinder and described right cylinder are fixedly connected with left pushing plate (5) and right pushing plate (6) by described left cylinder piston rod (12) and described right cylinder piston rod (13), simultaneously, described left cylinder and described right cylinder are provided with cylinder end piece (24), described left cylinder and described right cylinder are fixedly connected with fixed block (9) by described cylinder end piece (24), the upper surface of described fixed block (9) is provided with an arc groove, left needle tubing (1) and right needle tubing (2) is symmetrically arranged with in described arc groove, left needle tubing piston (3) and right needle tubing piston (4) is respectively arranged with and its upper surface is also provided with the compact heap (10) matched with it in described left needle tubing (1) and described right needle tubing (2), the middle part of described arc groove is provided with a groove, described groove internal fixtion is provided with a positioning block (8), the upper surface of described locating piece (8) is provided with a holding tank, a flexible pipe (7) be connected with described left needle tubing (1) and described right needle tubing (2) is provided with in described holding tank, and, the rear side of described fixed block (9) is fixedly connected with clamping screw (11), the bilateral symmetry of described fixed block (9) is provided through left guide post (16) and the right guide post (17) of described left pushing plate (5) and described right pushing plate (6).
2. collagen raw material according to claim 1 extruding agitating device, is characterized in that, described left needle tubing (1) and described right needle tubing (2) for diameter be the standard medical needles pipe of 22mm.
3. collagen raw material according to claim 1 extruding agitating device, is characterized in that, described left needle tubing piston (3) and described right needle tubing piston (4) for diameter be the standard medical needles pipe piston of 20mm.
4. collagen raw material according to claim 1 extruding agitating device, is characterized in that, described flexible pipe (7) for diameter be the standard plastic pipe of 6mm.
5. collagen raw material extruding agitating device according to claim 1, it is characterized in that, described connection fixing base (25) is L-type holder, the upper and lower side of described L-type holder is respectively arranged with two through hole, and described L-type holder is fixedly connected with described base plate (26) and described double piston-rod cylinder (18) respectively by described through hole.
6. collagen raw material extruding agitating device according to claim 5, it is characterized in that, (24) are provided with screwed hole to described cylinder end piece, and described connection fixing base (25) is connected with described double piston-rod cylinder (18) by the screwed hole on described through hole and described cylinder end piece (24).
7. collagen raw material extruding agitating device according to claim 6, it is characterized in that, the end of described left cylinder piston rod (12) and described right cylinder piston rod (13) is provided with screw thread, is connected respectively by left cylinder piston rod (12) described in described screw thread and described right cylinder piston rod (13) with described left pushing plate (5) and described right pushing plate (6) bolt.
8. collagen raw material extruding agitating device according to claim 1, it is characterized in that, described left guide post (16) and described right guide post (17) are provided with screw thread with the link of described fixed block (9), the other end of described left guide post (16) and the relatively described fixed block (9) of described right guide post (17) is polished rod, and described polished end is respectively charged in described left pushing plate (5) and described right pushing plate (6) and is slidably connected with described left pushing plate (5) and described right pushing plate (6).
9. collagen raw material extruding agitating device according to claim 1, it is characterized in that, described control valve hand is provided with circular control valve lever head the top of (20), further, described hand control valve (21) and described control valve lever head are all threaded with described control valve hand handle.
10. collagen raw material extruding agitating device according to claim 1, it is characterized in that, the upper and lower side of described left pushing plate (5) and described right pushing plate (6) is provided with top bar hole and hole of getting out of a predicament or an embarrassing situation respectively, wherein, polyethylene lining is provided with in described hole of topping bar, described hole of topping bar is slidably connected by described polyethylene lining and described left guide post (16) and described right guide post (17), meanwhile, get out of a predicament or an embarrassing situation described in left cylinder piston rod (12) described in Kong Zeyu and described right cylinder piston rod (13) is fixedly connected with.
11. collagen raw material extruding agitating devices according to claim 1, it is characterized in that, described hand control valve (21) is provided with left pore, right pore, air admission hole and steam vent, wherein, described left pore is connect by described left cylinder tube (22) and described left cylinders, described right pore is connect by described right cylinder tube (23) and described right cylinders, and described air admission hole is connected with described source outlet by described main tracheae (19).
12. collagen raw materials according to claim 1 extruding agitating devices, is characterized in that, described clamping screw (11) comprise T-shaped hand and with described T-shaped hand the semicircle spherical base be wholely set.
13. collagen raw material extruding agitating devices according to claim 1, it is characterized in that, the upper surface of described compact heap (10) is provided with an anti-rotation compact heap (28), wherein, the upper surface of described anti-rotation compact heap (28) is provided with a spherical concave surface, the semicircle spherical bottom of described clamping screw (11) is linked with the spherical concave surface of described anti-rotation compact heap (28) and is connected, further, the lower surface of described anti-rotation compact heap (28) is provided with the anti-skidding sharp groove of two circles.
14. collagen raw material extruding agitating devices according to claim 1, it is characterized in that, described clamping screw (11) is fixedly connected with clamping screw fixed mount (27).
15. collagen raw material extruding agitating devices according to claim 1, it is characterized in that, the termination symmetry of described double piston-rod cylinder (18) is fixedly installed left limit cover (14) and right limit cover (15), wherein, the material of described left limit cover (14) and described right limit cover (15) is polythene material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520074322.0U CN204816256U (en) | 2015-02-03 | 2015-02-03 | Collagen raw materials extrusion agitating unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520074322.0U CN204816256U (en) | 2015-02-03 | 2015-02-03 | Collagen raw materials extrusion agitating unit |
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| CN204816256U true CN204816256U (en) | 2015-12-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104624074A (en) * | 2015-02-03 | 2015-05-20 | 北京天新福医疗器材有限公司 | Collagen raw material extruding and stirring device |
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2015
- 2015-02-03 CN CN201520074322.0U patent/CN204816256U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104624074A (en) * | 2015-02-03 | 2015-05-20 | 北京天新福医疗器材有限公司 | Collagen raw material extruding and stirring device |
| CN104624074B (en) * | 2015-02-03 | 2018-05-29 | 天新福（北京）医疗器材股份有限公司 | A kind of collagen raw material squeezes agitating device |
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Address after: 102200 Changping District science and Technology Park, Beijing torch street, No. 30 Patentee after: Tianxinfu (Beijing) medical equipment Limited by Share Ltd Address before: 101204 Changping District science and Technology Park, Beijing torch street, No. 30 Patentee before: Beijing Tian Xin Fu Medical Appliance Co., Ltd. |