CN208102448U - A kind of blade casing bit of sterile needle knife - Google Patents
A kind of blade casing bit of sterile needle knife Download PDFInfo
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- CN208102448U CN208102448U CN201820201586.1U CN201820201586U CN208102448U CN 208102448 U CN208102448 U CN 208102448U CN 201820201586 U CN201820201586 U CN 201820201586U CN 208102448 U CN208102448 U CN 208102448U
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Abstract
The utility model discloses a kind of blade casing bits of sterile needle knife, including casing storage conveying mechanism, casing feed mechanism and needle knife clamping device.Wherein, casing storage conveying mechanism casing feed bin walks flitch group, walks to expect motor, scraper shaft and sweeping through the material plate, casing feed mechanism includes the support frame of planer-type, bottom framework, feeding cylinder, feeding push plate, the reciprocal driving structure of cylinder, pushes away sleeve fork mounting base and pushing sleeve pipe fork plate, and needle knife clamping device includes that lower gripper cylinder frame, lower gripper cylinder, upper gripper cylinder, knit stitch tool holder and upper needle tool holder is arranged.The automatic structure to casing on needle broach shell that the utility model uses, greatly facilitates the casing operation of needle knife production, has greatly speeded up the production efficiency of needle knife, reduced the labor intensity of worker, and of simple structure and strong practicability.
Description
Technical field
The utility model relates to a kind of needle knife process equipments, refer specifically to a kind of blade casing bit of sterile needle knife.
Background technique
Currently, generally using rotary feeder as rotating jig in the automation processing of sterile needle knife, passing through
The different manufacturing procedures for switching different rotary work stations to carry out, needle as above twist the needle, infuse handle, upper set etc. process.In upper set
Operation in, often require to use Shang Tao mechanism to casing on the needle broach shell on rotary work station, in the prior art to needle knife
The process for covering casing, needle knife is often removed by the way of artificial, puts on casing manually.
Although such method can complete casing operation, manually operation needs to expend a large amount of manpower and material resources,
And whole working efficiency is not high, influences the production efficiency of entire needle knife processing.
Utility model content
In order to solve the above shortcomings in the prior art, the utility model provides a kind of blade casing of sterile needle knife dresses
It sets.
In order to solve the above-mentioned technical problem, the utility model uses following technical scheme：A kind of blade set of sterile needle knife
Pipe device, including casing storage conveying mechanism, casing feed mechanism and needle knife clamping device.
Wherein, casing storage conveying mechanism includes the casing feed bin of taper, walking for casing feed bin lower part is arranged in
Flitch group is mounted on the scraper shaft of side walking to expect motor, being mounted in casing feed bin outside casing feed bin and is set to scraper
Sweeping through the material plate in shaft, it is described walk flitch group include inclination be set to casing feed bin lower part separation baffles, be set to separation baffles under
The material trough plate in portion and set on material trough plate be equipped with sweep pipe correcting pressure baffle, the material trough plate have it is a plurality of disposed in parallel defeated
Hopper, the sweeping through the material plate are successively dialled in casing in feeding groove by rotation.
Described sleeve pipe feed mechanism includes the support frame of planer-type, the bottom framework that support frame lower part is arranged in, is fixed on bottom
The feeding cylinder of lower portion, the feeding push plate being mounted in feeding cylinder, the cylinder for being mounted on support frame top back and forth drive
Structure is mounted on pushing away sleeve fork mounting base and be mounted on and pushing away sleeve fork mounting base lower part for the reciprocal driving structure lower part of cylinder
Pushing sleeve pipe fork plate, wherein the plate face of the feeding push plate is equipped with the one-to-one wears groove of feeding groove with material trough plate, and should
Vertical fixed one piece of the rear portion of feeding push plate can be with the baffle plate of the conveying front of the slot notch of backstop material trough plate, the pushing sleeve pipe
Fork plate be equipped with and feeding push plate on wears groove correspondingly before pushing item.
The needle knife clamping device includes that the lower gripper cylinder frame on front side of support frame is arranged in, is set on lower gripper cylinder frame
Lower gripper cylinder, be fixed on support frame top forward position upper gripper cylinder, be mounted on the knit stitch cutter holder on lower gripper cylinder top
Tool and the upper needle tool holder set on upper gripper cylinder lower part, the knit stitch tool holder and upper needle tool holder are by using ripple
Broached-tooth design makes somebody a mere figurehead fixed pin knife blade, feeding push plate and two needle knives to a clamping fixed row and the one-to-one needle knife of wears groove
Fixed casing conductive plate on the support frame is additionally provided between fixture, described sleeve pipe conductive plate is equipped with and the wears groove of feeding push plate
Corresponding bushing slot, the needle knife and bushing slot correspond.
After penetrating storing in the wears groove of the feeding push plate and having casing, material push plate is pushed in the feeding cylinder and is arrived and casing
Conductive plate flushes, the reciprocal driving structure of cylinder push pushing sleeve pipe fork plate preceding pushing item, preceding pushing item stir casing according to
Secondary pass through is set on needle knife blade again in wears groove and bushing slot.
Further, the sweeping through the material plate is elastic soft silica gel plate, and the pipe correcting pressure shutter of sweeping is in material trough plate
Feeding groove on, sweeping through the material plate one by one arranges casing in rotation and scrapes in feeding groove, and the casing bunchiness in feeding groove is forward
It arranges progressive.
Further, the reciprocal driving structure of the cylinder includes the line of slide rail for being fixed on support frame top both sides, installation
Two line of slide rails promotion slide plate, vertically be installed through push sliding on a pair of of hanging column, be fixed on push slide plate in
The cylinder axis fixing seat of plate and the fork plate on support frame drive cylinder, and the sleeve fork mounting base that pushes away is fixed on two
The lower part of hanging column.
Further, the top of the knit stitch tool holder is equipped with two rows of parallel lower jaw sawtooth, the upper needle tool holder
Lower part is equipped with maxilla sawtooth, and the centre of two rows of lower jaw sawtooth, knit stitch tool holder and upper needle tool holder is arranged in the maxilla sawtooth
After closing up, needle knife is stuck in the tooth socket of maxilla sawtooth and lower jaw sawtooth；In the plate face of the knit stitch tool holder and upper needle tool holder
Equipped with the casing hole slot for facilitating casing to penetrate, the needle knife rest sky is inserted into this casing hole slot.
Further, the lower part of the knit stitch tool holder is equipped with a pair of lower guide post for running through lower gripper cylinder frame, described
The top of upper needle tool holder is equipped with upper guide post.
Further, the bottom framework is equipped with the height limiting device for limiting feeding push plate.
The needle knife of the utility model is on the assembly line for be arranged in the processing of needle knife on rotary work station, when rotating to upper set station
When position, the root of the shank of needle knife is clamped in upper and lower gripper cylinder work by upper needle tool holder and the molding of knit stitch tool holder
Position, for needle knife after completing to infuse handle, the fixture on rotary work station directly clamps the shank of needle knife, exposes complete needle knife blade,
Casing can directly entangle needle knife in this way.
In order to which grip pipe sleeve lives needle knife, casing is put according to the vertical direction of feeding groove first, is put into casing feed bin.
It walks to expect motor at this time, drives the rotation of sweeping through the material plate, sweeping through the material plate is using soft board, and sweeping through the material plate is in rotation, constantly the past material of casing
It is scraped in feeding groove on frid, the feeding groove in material trough plate is using square groove, the diameter of lateral wide cut and circular casing
Slightly larger 2mm or so, what guarantee casing can be mutual in feeding groove is progressive, and in one piece of correcting pressure gear of the upper surface of feeding groove
Plate covers, and casing is allowed directly to pass through from feeding groove, after covering tube top to baffle plate, walks and expects that motor stops working, to feeding gas
The position that cylinder begins to work drop-down feeding push plate arrival and material trough plate flushes, in this way, wears groove and material trough plate in feeding push plate
On feeding groove can Corresponding matching be connected, allow away material motor to work again, after allowing casing to be inserted into wears groove, and by front
The fixed stop plate of casing conductive plate side is stopped, casing conductive plate it is identical with the length of feeding push plate and the length of casing or
Slightly smaller than casing length is to carry out by rows this makes it possible to guarantee each conduction all, is fixed baffle plate 11 and blocks it
Afterwards, feeding cylinder works, and jacks up feeding push plate, shifts the position that preset and casing conductive plate flushes, such casing conductive plate onto
On the corresponding matching of bushing slot and wears groove flush and communicate.
At this point, the fork plate of top drives cylinder operation, shifts entire promotion slide plate onto and slided on line of slide rail, push slide plate
Lower part both ends be equipped with the line of slide seat of a pair of of matching line of slide rail installation, shift slide plate onto sliding, drive pushing sleeve pipe fork plate
Forward, then preceding pushing item is inserted into wears groove forward, and the casing in wears groove is pushed in bushing slot, is placed to bushing slot
Afterwards, it is directly inserted into casing hole slot, and is inserted on the blade of needle knife, complete casing operation.
In addition, it is noted that the upper needle tool holder and knit stitch tool holder of the utility model when clamping needle knife, not
It is the shank of complete clamping needle knife, but that not loose not tight state, in this way when needle knife and casing contraposition have deviation, just
Needle knife and casing will not be damaged.
Compared with prior art, the automatic structure to casing on needle broach shell that the utility model uses, greatly facilitates needle
The casing operation of knife production, has greatly speeded up the production efficiency of needle knife, has reduced the labor intensity of worker, and structure is simple,
It is practical.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the perspective view of the utility model；
Fig. 3 is the top view of the utility model；
Fig. 4 is the front elevation of the utility model；
Fig. 5 is the sectional view that the A-A in Fig. 4 goes out；
Fig. 6 is the decomposition texture schematic diagram of the utility model；
Fig. 7 is the structural schematic diagram of the casing feed mechanism of the utility model；
Fig. 8 is the casing operation figure of the utility model；
Fig. 9 is the structural schematic diagram for walking flitch group of the utility model；
Figure 10 is the structural schematic diagram of the feeding push plate of the utility model.
Specific embodiment
Utility model is described in detail with reference to the accompanying drawings and examples.
As shown in Fig. 1 to 10, the utility model proposes sterile needle knife blade casing bit, including casing storage conveying
Mechanism, casing feed mechanism and needle knife clamping device；
Wherein, casing storage conveying mechanism include the casing feed bin 1 of taper, 1 lower part of casing feed bin is set walk flitch
2 are organized, the scraper shaft 4 of 1 outside side of casing feed bin walking to expect motor 3, being mounted in casing feed bin 1 is mounted on and is set to scraper
Sweeping through the material plate 5 in shaft 4, walking flitch group 2 includes that inclination is set to the separation baffles 6 of 1 lower part of casing feed bin, is set to separation baffles 6
The material trough plate 7 of lower part and set on material trough plate 7 be equipped with sweep pipe correcting pressure baffle 8, material trough plate 7 have it is a plurality of disposed in parallel
Feeding groove 71, sweeping through the material plate 5 are successively dialled in casing in feeding groove by rotation.
Casing feed mechanism includes the support frame 9 of planer-type, the bottom framework 10 that 9 lower part of support frame is arranged in, is fixed on bottom
The feeding cylinder 12 of lower portion, the feeding push plate 14 being mounted in feeding cylinder 12, the cylinder for being mounted on 9 top of support frame
Reciprocal driving structure is mounted on pushing away sleeve fork mounting base 15 and be mounted on and pushing away sleeve fork for the reciprocal driving structure lower part of cylinder
The pushing sleeve pipe fork plate 16 of 15 lower part of mounting base, wherein the plate face of feeding push plate 14 is equipped with a pair of with the feeding groove one of material trough plate 7
The wears groove 17 answered, and vertical fixed one piece of the rear portion of the feeding push plate 14 can be with the conveying front of the slot notch of backstop material trough plate 7
Baffle plate 18, pushing sleeve pipe fork plate 16 be equipped with and feeding push plate 14 on wears groove 17 it is one-to-one before pushing item 19.
Needle knife clamping device includes the lower gripper cylinder frame 20 that 9 front side of support frame is arranged in, is set on lower gripper cylinder frame
Lower gripper cylinder 21, be fixed on 9 top forward position of support frame upper gripper cylinder 22, be mounted on the knit stitch on lower gripper cylinder top
Tool holder 23 and upper needle tool holder 24 set on upper 22 lower part of gripper cylinder, knit stitch tool holder 23 and upper needle tool holder 24 are logical
It crosses using corrugated zigzag structure to a clamping fixed row and the one-to-one needle knife of wears groove 17, and makes somebody a mere figurehead fixed pin knife blade, feeding
Fixed casing conductive plate 25 on the support frame is additionally provided between push plate 14 and two needle tool holders, casing conductive plate 25 is equipped with
Bushing slot 13 corresponding with the wears groove of feeding push plate, needle knife and bushing slot 13 correspond.
After penetrating storing in the wears groove 17 of feeding push plate 14 and having casing, material push plate 14 is pushed in feeding cylinder 12 and is arrived and casing
Conductive plate 25 flushes, and the reciprocal driving structure of cylinder is in the preceding pushing item 19 for pushing pushing sleeve pipe fork plate 16, preceding 19 sliding set of pushing item
Pipe is sequentially passed through to be set on needle knife blade again in wears groove 17 and bushing slot 13.
Sweeping through the material plate 5 is elastic soft silica gel plate, sweeps pipe correcting pressure baffle 8 and covers on the feeding groove of material trough plate 7, sweeping through the material
Plate 5 one by one arranges casing in rotation and scrapes in feeding groove, and the casing bunchiness in feeding groove arranges forward progressive.
The reciprocal driving structure of cylinder includes the line of slide rail 26 for being fixed on 9 top both sides of support frame, is mounted on two lines of slide
The promotion slide plate 27 of rail 26 is vertically installed through a pair of of the hanging column 28 pushed in sliding, is fixed on plate in promotion slide plate 27
Cylinder axis fixing seat 29 and fork plate on support frame 9 drive cylinder 30, push away sleeve fork mounting base 15 and be fixed on two
The lower part of hanging column 28.
The top of knit stitch tool holder 23 is equipped with two rows of parallel lower jaw sawtooth, and the lower part of upper needle tool holder 24 is sawed equipped with maxilla
Tooth, the centre of two rows of lower jaw sawtooth is arranged in maxilla sawtooth, after knit stitch tool holder 23 and upper needle tool holder 24 close up, needle knife card
In the tooth socket of maxilla sawtooth and lower jaw sawtooth；The plate face of knit stitch tool holder 23 and upper needle tool holder 24, which is equipped with, facilitates casing to wear
The casing hole slot entered, needle knife rest sky are inserted into this casing hole slot.
The lower part of knit stitch tool holder 23 is equipped with a pair of lower guide post for running through lower gripper cylinder frame 20, upper needle tool holder 24
Top is equipped with upper guide post.Support frame 9 is equipped with the height limiting device 31 for limiting feeding push plate 14.
The needle knife 32 of the utility model is on the assembly line for be arranged in the processing of needle knife on rotary work station, when rotating to upper set work
When the position of position, the root of the shank of needle knife is clamped in upper and lower gripper cylinder work by upper needle tool holder and the molding of knit stitch tool holder
Portion position, for needle knife after completing to infuse handle, the fixture on rotary work station directly clamps the shank of needle knife, exposes complete needle knife knife
Body, such casing 33 can directly entangle needle knife.
In order to which grip pipe sleeve lives needle knife, casing is put according to the vertical direction of feeding groove first, is put into casing feed bin.
It walks to expect motor at this time, drives the rotation of sweeping through the material plate, sweeping through the material plate is using soft board, and sweeping through the material plate is in rotation, constantly the past material of casing
It is scraped in feeding groove on frid, the feeding groove in material trough plate is using square groove, the diameter of lateral wide cut and circular casing
Slightly larger 2mm or so, what guarantee casing can be mutual in feeding groove is progressive, and in one piece of correcting pressure gear of the upper surface of feeding groove
Plate covers, and casing is allowed directly to pass through from feeding groove, after covering tube top to baffle plate, walks and expects that motor stops working, to feeding gas
The position that cylinder begins to work drop-down feeding push plate arrival and material trough plate flushes, in this way, wears groove and material trough plate in feeding push plate
On feeding groove can Corresponding matching be connected, allow away material motor to work again, after allowing casing to be inserted into wears groove, and by front
The fixed stop plate 11 of casing conductive plate side is stopped, the length phase of the length and casing of casing conductive plate and feeding push plate
With or slightly smaller than casing length, be to carry out by rows this makes it possible to guarantee each conduction all, be fixed the gear of baffle plate 11
After firmly, feeding cylinder work jacks up feeding push plate, shifts the position that preset and casing conductive plate flushes onto, and such casing passes
The corresponding matching of bushing slot and wears groove on guide plate, which flushes, to be communicated.
At this point, the fork plate of top drives cylinder operation, shifts entire promotion slide plate onto and slided on line of slide rail, push slide plate
Lower part both ends be equipped with the line of slide seat of a pair of of matching line of slide rail installation, shift slide plate onto sliding, drive pushing sleeve pipe fork plate
Forward, then preceding pushing item is inserted into wears groove forward, and the casing in wears groove is pushed in bushing slot, is placed to bushing slot
Afterwards, it is directly inserted into casing hole slot, and is inserted on the blade of needle knife, complete casing operation.
In addition, it is noted that the upper needle tool holder and knit stitch tool holder of the utility model when clamping needle knife, not
It is the shank of complete clamping needle knife, but that not loose not tight state, in this way when needle knife and casing contraposition have deviation, just
Needle knife and casing will not be damaged.
Above-described embodiment only expresses the several embodiments of the utility model, and the description thereof is more specific and detailed, but simultaneously
It cannot be therefore understands that for a limitation on the scope of the patent of the present invention.It should be pointed out that for the ordinary skill people of this field
For member, without departing from the concept of the premise utility, various modifications and improvements can be made, these belong to this reality
With novel protection scope.Therefore, the utility model patent and protection scope should be subject to the appended claims.
Claims (6)
1. a kind of blade casing bit of sterile needle knife, it is characterised in that：Conveying mechanism, casing feed mechanism are stored including casing
With needle knife clamping device；
Wherein, casing storage conveying mechanism includes the casing feed bin (1) of taper, is arranged in casing feed bin (1) lower part
The scraper walking to expect motor (3), being mounted in casing feed bin (1) walked flitch group (2), be mounted on the external side of casing feed bin (1)
Shaft (4) and be set to scraper shaft (4) on sweeping through the material plate (5), it is described walk flitch group (2) include inclination be set to casing feed bin (1)
The separation baffles (6) of lower part, be set to separation baffles (6) lower part material trough plate (7) and be set to material trough plate (7) be equipped with sweep pipe
Baffle (8) are pressed in correcting, and the material trough plate (7) has a plurality of feeding groove (71) disposed in parallel, and the sweeping through the material plate (5) passes through rotation
Casing is successively dialled in feeding groove；
Described sleeve pipe feed mechanism include the support frame (9) of planer-type, setting support frame (9) lower part bottom framework (10), solid
It is scheduled on the feeding cylinder inside bottom framework (12), the feeding push plate (14) that is mounted on feeding cylinder (12), is mounted on support frame
(9) the reciprocal driving structure of the cylinder on top, be mounted on the reciprocal driving structure lower part of cylinder push away sleeve fork mounting base (15) and
It is mounted on the pushing sleeve pipe fork plate (16) for pushing away sleeve fork mounting base (15) lower part, wherein set in the plate face of the feeding push plate (14)
Have and the one-to-one wears groove of feeding groove (17) of material trough plate (7), and vertical fixed one piece of the rear portion of the feeding push plate (14)
Can be with the baffle plate (18) of the conveying front of the slot notch of backstop material trough plate (7), the pushing sleeve pipe fork plate (16) is equipped with and feeding
The one-to-one preceding pushing item (19) of wears groove (17) in push plate (14)；
The needle knife clamping device includes the lower gripper cylinder frame (20) being arranged on front side of support frame (9), is set to lower gripper cylinder
Lower gripper cylinder (21) on frame, is mounted on lower gripper cylinder at the upper gripper cylinder (22) for being fixed on support frame (9) top forward position
The knit stitch tool holder (23) on top and the upper needle tool holder (24) for being set to upper gripper cylinder (22) lower part, the knit stitch cutter holder
Have (23) and upper needle tool holder (24) by using corrugated zigzag structure to a clamping fixed row and wears groove (17) one-to-one needle
Knife, and aerial fixed pin knife blade, are additionally provided with fixed casing on the support frame between feeding push plate (14) and two needle tool holders
Conductive plate (25), described sleeve pipe conductive plate (25) are equipped with bushing slot (13) corresponding with the wears groove of feeding push plate, the needle
Knife and bushing slot (13) correspond；
After penetrating storing in the wears groove (17) of the feeding push plate (14) and having casing, material push plate is pushed on the feeding cylinder (12)
(14) it is flushed to casing conductive plate (25), the reciprocal driving structure of cylinder is in the preceding pushing item for pushing pushing sleeve pipe fork plate (16)
(19), preceding pushing item (19) is stirred casing and sequentially passed through is set on needle knife blade again in wears groove (17) and bushing slot (13).
2. the blade casing bit of sterile needle knife according to claim 1, it is characterised in that：The sweeping through the material plate (5) is band
Flexible soft silica gel plate, pipe correcting pressure baffle (8) of sweeping are covered on the feeding groove of material trough plate (7), and sweeping through the material plate (5) is rotating
Middle casing is arranged one by one is scraped in feeding groove, and the casing bunchiness in feeding groove arranges forward progressive.
3. the blade casing bit of sterile needle knife according to claim 1, it is characterised in that：The cylinder back and forth drives knot
Structure includes being fixed on the line of slide rail (26) on support frame (9) top both sides, being mounted on the promotion slide plate of two line of slide rails (26)
(27), it is vertically installed through a pair of of the hanging column (28) pushed in sliding, is fixed on the cylinder axis for pushing plate in slide plate (27)
Fixing seat (29) and the fork plate being set on support frame (9) drive cylinder (30), and the sleeve fork mounting base (15) that pushes away is fixed on
The lower part of two hanging columns (28).
4. the blade casing bit of sterile needle knife according to claim 1, it is characterised in that：The knit stitch tool holder (23)
Top be equipped with two rows of parallel lower jaw sawtooth, the lower part of the upper needle tool holder (24) is equipped with maxilla sawtooth, the maxilla saw
The centre of two rows of lower jaw sawtooth is arranged in tooth, and after knit stitch tool holder (23) and upper needle tool holder (24) close up, needle knife is stuck in maxilla
In the tooth socket of sawtooth and lower jaw sawtooth；The plate face of the knit stitch tool holder (23) and upper needle tool holder (24), which is equipped with, facilitates casing
The casing hole slot penetrated, the needle knife rest sky are inserted into this casing hole slot.
5. the blade casing bit of sterile needle knife according to claim 1, it is characterised in that：The knit stitch tool holder (23)
Lower part be equipped with a pair of lower guide post for running through lower gripper cylinder frame (20), the top of the upper needle tool holder (24), which is equipped with, above leads
Xiang Zhu.
6. the blade casing bit of sterile needle knife according to claim 1, it is characterised in that：It is set on the bottom framework (10)
There is the height limiting device (31) for limiting feeding push plate (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820201586.1U CN208102448U (en) | 2018-02-06 | 2018-02-06 | A kind of blade casing bit of sterile needle knife |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820201586.1U CN208102448U (en) | 2018-02-06 | 2018-02-06 | A kind of blade casing bit of sterile needle knife |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208102448U true CN208102448U (en) | 2018-11-16 |
Family
ID=64123555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820201586.1U Active CN208102448U (en) | 2018-02-06 | 2018-02-06 | A kind of blade casing bit of sterile needle knife |
Country Status (1)
| Country | Link |
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| CN (1) | CN208102448U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108190099A (en) * | 2018-02-06 | 2018-06-22 | 江西老宗医医疗器械有限公司 | A kind of blade casing bit of sterile needle knife |
-
2018
- 2018-02-06 CN CN201820201586.1U patent/CN208102448U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108190099A (en) * | 2018-02-06 | 2018-06-22 | 江西老宗医医疗器械有限公司 | A kind of blade casing bit of sterile needle knife |
| CN108190099B (en) * | 2018-02-06 | 2023-12-19 | 江西老宗医医疗器械有限公司 | Blade sleeve device of sterile needle knife |
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