CN220348581U - Punching device for cannula - Google Patents
Punching device for cannula Download PDFInfo
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- CN220348581U CN220348581U CN202320897295.1U CN202320897295U CN220348581U CN 220348581 U CN220348581 U CN 220348581U CN 202320897295 U CN202320897295 U CN 202320897295U CN 220348581 U CN220348581 U CN 220348581U
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- cannula
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- 238000004080 punching Methods 0.000 title claims abstract description 79
- 238000003780 insertion Methods 0.000 claims abstract description 49
- 230000037431 insertion Effects 0.000 claims abstract description 49
- 238000010438 heat treatment Methods 0.000 claims abstract description 31
- 238000012545 processing Methods 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 230000000712 assembly Effects 0.000 claims abstract description 9
- 238000000429 assembly Methods 0.000 claims abstract description 9
- 230000000670 limiting effect Effects 0.000 claims description 70
- 238000013461 design Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 241001631457 Cannula Species 0.000 abstract 2
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000002627 tracheal intubation Methods 0.000 description 1
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- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The utility model discloses a punching device for a cannula, which comprises a working platform, a turntable, a double-position clamp, a top position cylinder and a double-position punching mechanism, wherein the turntable is arranged on the working platform; the turntable is arranged on the working platform; a station groove is formed on the edge of the turntable; the station groove is provided with a double-position clamp; a top position cylinder is arranged below the double-position clamp, and a double-position punching mechanism is arranged above the double-position clamp; the double-position punching mechanism comprises a punching assembly and a heating assembly; punching assemblies are correspondingly arranged above the two cannulas respectively, and heating assemblies are correspondingly arranged on the sides of the two cannulas respectively. The output end of the jacking cylinder is used for jacking the lifting part to tightly jack the insertion pipe, the punching assembly is synchronously started to drive the punch to punch the insertion pipe, and meanwhile, the punching positions of the warmer and the two insertion pipes in the two heating assemblies are synchronously adjusted, the insertion pipe is properly heated, and the processing efficiency and the punching quality of the insertion pipe are improved.
Description
Technical Field
The utility model relates to the technical field of punching, in particular to a punching device for a cannula.
Background
In some hose/cannula processing procedures, it is often necessary to punch the cannula, but in the punching or perforating of the cannula, the cannula is often processed only at a single station, which is low; meanwhile, the cannula shifting and the cannula hardness are affected in the machining process sometimes, and the machining effect of cannula punching is reduced.
Disclosure of Invention
The utility model aims to provide a punching device for a cannula, which can solve the problem of poor punching effect caused by displacement received in cannula processing and higher cannula hardness in the prior art.
The utility model aims at realizing the following technical scheme:
the utility model provides a punching device for a cannula, which comprises a working platform, a turntable, a double-position clamp, a top position cylinder and a double-position punching mechanism, wherein the turntable is arranged on the working platform; the turntable is arranged on the working platform; a station groove is formed on the edge of the turntable; the station groove is provided with a double-position clamp; a top position cylinder is arranged below the double-position clamp, and a double-position punching mechanism is arranged above the double-position clamp;
the double-position clamp comprises clamping plates, bearing seats, jacking parts and rotating shafts, wherein the clamping plates are connected to the station grooves, the bearing seats are arranged at two ends of the top surface of each clamping plate, each bearing seat is connected with each rotating shaft, and one end of each rotating shaft is sleeved with an insertion pipe; the clamping plate is also connected with a jacking component; the upper end of the jacking component is provided with an arc-shaped groove matched with the insertion pipe, and the lower end of the jacking component is connected with the output end of the jacking cylinder;
the double-position punching mechanism comprises a punching assembly and a heating assembly; punching assemblies are correspondingly arranged above the two insertion tubes respectively, and heating assemblies are correspondingly arranged on the sides of the two insertion tubes respectively;
the punching assembly comprises a first cylinder, a first fixing piece and a punch; the top end of the first fixing piece is fixedly connected with the device frame body; the first fixing piece is arranged into a groove, and a first cylinder is arranged at the groove; the output end of the first cylinder is connected with a punch; the punch corresponds to the position to be punched of the insertion tube;
the heating component comprises a second cylinder, a second fixing assembly and a warmer; the second fixing component is fixedly connected with the device frame body; the second fixing assembly is provided with a second cylinder; the output end of the second cylinder is connected with a warmer; the heating end of the heater corresponds to the punching processing position of the insertion pipe.
Further, the punching assembly further comprises a punch limiting block; a first sliding rail is further arranged at the groove of the first fixing piece, and the punching limiting block is in sliding connection with the sliding rail; the punch limiting block is provided with a limiting hole, the punch is matched with the limiting block, and the punch penetrates through the limiting block.
Further, the second fixing component comprises a first fixing plate, a second fixing plate and a cylinder fixing component; the upper end of the first fixing plate is fixedly connected with the device frame body, and the lower end of the first fixing plate is fixedly connected with the second fixing plate; the second fixing plate is fixedly connected with the cylinder fixing piece; the cylinder fixing piece is fixedly connected with the second cylinder; the second fixing plate is provided with a second sliding rail, the warmer is provided with a sliding block matched with the second sliding rail, and sliding connection between the warmer and the second fixing plate is formed based on the cooperation of the second sliding rail and the sliding block; the output end of the second cylinder is fixedly connected with a sliding block on the warmer.
Further, a heating nozzle is arranged at the heating end of the warmer, and the heating nozzle is in an arc-shaped design; the heating nozzle corresponds to the punching processing position of the insertion pipe.
Further, the jacking component comprises a dragging table, a jacking column, a spring limiting block, a limiting column, a first reset spring and a second reset spring; the two ends of the clamping plate respectively penetrate through the limit posts; the top ends of the two limiting columns are in contact connection with the bottom end of the dragging table, and the lower ends of the two limiting columns are connected with the spring limiting block; the limiting column is sleeved with a first reset spring between the clamping plate and the spring limiting block; the upper end of the top column sequentially penetrates through the spring limiting block, the clamping plate and the dragging table from bottom to top; a cavity is arranged at the position of the top column in the dragging table, a second reset spring is sleeved on the top column at the position of the cavity in a penetrating way, and a shaft neck for limiting is arranged at the joint of the upper end of the top column connected with the second reset spring; the bottom of spring stopper is connected with the output of top position cylinder.
Further, one end of the rotating shaft sleeved with the insertion pipe is provided with a foolproof bevel; the rotating shaft is sleeved at the position of the bearing seat through a limiting hole, and a limiting bolt matched with the limiting hole is arranged at the side end of the bearing seat.
Further, the bottom end of the dragging table is respectively provided with a limiting groove matched with the two limiting columns; the top ends of the two limit posts are respectively inserted into the limit grooves to form contact connection.
Further, a blanking groove is further formed in the working platform, and the blanking groove is correspondingly arranged at the edge of the turntable.
Further, an L-shaped baffle plate is arranged at a feed opening at the upper end of the feed chute, and the L-shaped baffle plate is higher than the working platform.
The utility model has the beneficial effects that:
1. according to the cannula punching device, the jacking part is lifted through the output end of the jacking cylinder to jack and limit the cannula, so that the cannula is prevented from shifting in the punching process; the output ends of the two first cylinders are synchronously started to extend downwards to drive the punch to punch the insertion pipe, and meanwhile, the punching positions of the two heaters and the two insertion pipes are synchronously adjusted, and the insertion pipe is properly heated and softened, so that the processing efficiency and the punching quality are improved.
2. According to the synchronous blank pressing punching device for the insertion pipe, the fool-proof bevel connection is arranged on the rotating shaft of the double-position clamp, and the bolt is arranged at the side end of the bearing seat of the double-position clamp, so that limiting in the insertion pipe punching process is realized, and the accuracy of punching the insertion pipe is improved.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the overall structure of a cannula punching device;
FIG. 2 is a schematic view of a part of the structure of a cannula punching device;
FIG. 3 is a schematic structural view of a punching assembly;
FIG. 4 is a schematic diagram of a heating assembly;
FIG. 5 is a schematic view of the overall structure of a dual-position clamp;
fig. 6 is a schematic single side cross-sectional view of a dual-position clamp.
The reference numerals are as follows:
1-a working platform, 11-a blanking groove and 12-L-shaped baffle plates;
2-a turntable and a 21-station groove;
3-top cylinder;
4-double-position clamp, 41-clamping plate, 42-bearing seat, 421-plug, 43-rotating shaft, 431-concave piece, 432-rotating shaft bevel, 44-spring limit block, 45-dragging table, 46-jacking column, 461-clamping cap, 462-journal, 47-first reset spring, 48-limit column and 49-second reset spring;
5-double-position punching mechanism, 51-punching assembly, 511-first cylinder, 512-first fixing piece, 5121-first sliding rail, 513-punch limiting block, 5131-limiting hole, 514-punch, 512-first 52-heating assembly, 521-first fixing plate, 522-second fixing plate, 5221-second sliding rail, 5222-cylinder fixing piece, 523-second cylinder, 524-heater, 5241-sliding block and 5242-heating nozzle;
10-intubation.
Detailed Description
Embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
Other advantages and effects of the present disclosure will become readily apparent to those skilled in the art from the following disclosure, which describes embodiments of the present disclosure by way of specific examples. It will be apparent that the described embodiments are merely some, but not all embodiments of the present disclosure. The disclosure may be embodied or practiced in other different specific embodiments, and details within the subject specification may be modified or changed from various points of view and applications without departing from the spirit of the disclosure. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. All other embodiments, which can be made by one of ordinary skill in the art without inventive effort, based on the embodiments in this disclosure are intended to be within the scope of this disclosure.
Referring to fig. 1 to 6, a punching device for a cannula according to an embodiment of the present utility model includes a working platform, a turntable, a dual-position clamp, a top cylinder, and a dual-position punching mechanism; the turntable is arranged on the working platform, a spacing space is formed between the turntable and the working platform, and the driving end of the turntable is arranged on the working platform; a station groove is formed on the edge of the turntable; the station groove is provided with a double-position clamp; a top position cylinder is arranged below the double-position clamp, and a double-position punching mechanism is arranged above the double-position clamp;
the double-position clamp comprises clamping plates, bearing seats, jacking parts and rotating shafts, wherein the clamping plates are connected to the station grooves, the bearing seats are arranged at two ends of the top surface of each clamping plate, each bearing seat is connected with each rotating shaft, and one end of each rotating shaft is sleeved with an insertion pipe; the clamping plate is also connected with a jacking component; the upper end of the jacking component is provided with an arc-shaped groove matched with the insertion pipe, and the lower end of the jacking component is connected with the output end of the jacking cylinder;
the double-position punching mechanism comprises a punching assembly and a heating assembly; punching assemblies are correspondingly arranged above the two insertion tubes respectively, and heating assemblies are correspondingly arranged on the sides of the two insertion tubes respectively;
the punching assembly comprises a first cylinder, a first fixing piece and a punch; the top end of the first fixing piece is fixedly connected with the device frame body (the device frame body plays a supporting role, and the explanation is the same as the following); the first fixing piece is arranged into a groove, and a first cylinder is arranged at the groove; the output end of the first cylinder is connected with a punch; the punch corresponds to the position to be punched of the insertion tube;
the heating component comprises a second cylinder, a second fixing assembly and a warmer; the second fixing component is fixedly connected with the device frame body; the second fixing assembly is provided with a second cylinder; the output end of the second cylinder is connected with a warmer; the heating end of the heater corresponds to the punching processing position of the insertion pipe.
In specific implementation, the punching processing principle of the insertion tube is as follows:
sleeving the two insertion tubes on the two rotating shafts respectively, and lifting the bottom end of the part at the output end of the jacking cylinder, wherein the jacking part is lifted to tightly jack and limit the insertion tubes at the moment, so that the insertion tubes are prevented from shifting in the punching process; the output ends of the two first cylinders are synchronously started to extend downwards to drive the punch to punch the insertion pipe, and meanwhile, the punching positions of the two heaters and the two insertion pipes are synchronously adjusted, and the insertion pipe is properly heated and softened, so that the processing efficiency and the punching quality are improved.
Referring to fig. 1 to 6, further, in another embodiment of the cannula punching device of the present application, the punching assembly further includes a punch stopper; a first sliding rail is further arranged at the groove of the first fixing piece, and the punching limiting block is in sliding connection with the sliding rail; the limiting hole is formed in the punch limiting block, the punch is matched with the limiting block, the punch penetrates through the limiting block, limiting effect on the punch is achieved through the limiting hole in the punch limiting block, and machining accuracy of punching of the inserted pipe is improved.
The second fixing component comprises a first fixing plate, a second fixing plate and a cylinder fixing component; the upper end of the first fixing plate is fixedly connected with the device frame body, and the lower end of the first fixing plate is fixedly connected with the second fixing plate; the second fixing plate is fixedly connected with the cylinder fixing piece; the cylinder fixing piece is fixedly connected with the second cylinder; the second fixing plate is provided with a second sliding rail, the warmer is provided with a sliding block matched with the second sliding rail, and sliding connection between the warmer and the second fixing plate is formed based on the cooperation of the second sliding rail and the sliding block; the output end of the second cylinder is fixedly connected with a sliding block on the warmer. The heating end of the warmer is provided with a heating nozzle which is in an arc-shaped design; the heating nozzle is corresponding to the punching position of the insertion pipe, the insertion pipe is heated through the heating nozzle, and the efficiency and the processing quality of the punching processing process can be improved by moderately softening the insertion pipe.
The jacking component comprises a dragging table, a jacking column, a spring limiting block, a limiting column, a first reset spring and a second reset spring; the two ends of the clamping plate respectively penetrate through the limit posts; the top ends of the two limiting columns are in contact connection with the bottom end of the dragging table, and the lower ends of the two limiting columns are connected with the spring limiting block; the limiting column is sleeved with a first reset spring between the clamping plate and the spring limiting block; the upper end of the top column sequentially penetrates through the spring limiting block, the clamping plate and the dragging table from bottom to top; a cavity is arranged at the position of the top column in the dragging table, a second reset spring is sleeved on the top column at the position of the cavity in a penetrating way, and a shaft neck for limiting is arranged at the joint of the upper end of the top column connected with the second reset spring; the bottom of spring stopper is connected with the output of top position cylinder.
One end of the rotating shaft, which is sleeved with the insertion pipe, is provided with a fool-proof bevel; the rotating shaft is sleeved at the position of the bearing seat through a limiting hole, and a limiting bolt matched with the limiting hole is arranged at the side end of the bearing seat. Through being equipped with in the pivot of dibit anchor clamps and prevent slow-witted bevel connection to be equipped with the bolt at the side of the bearing frame of dibit anchor clamps, utilize the pivot to rotate to prevent slow-witted bevel connection position, then carry out spacingly to the pivot at utilizing the bolt, realize that the intubate punches a hole and processes in-process spacing, improved the accuracy to the intubate processing of punching a hole.
The bottom end of the dragging table is respectively provided with a limiting groove matched with the two limiting columns; the top ends of the two limiting columns are respectively inserted into the limiting grooves to form contact connection, so that good limiting effect between the limiting columns and the dragging table is achieved.
In specific implementation, the top position cylinder stretches out and upwards jacks up the spring limiting part, and the spacing post will rise at this moment and jack up and drag the platform so that drag the platform and rise, and first reset spring is compressed this moment, and second reset spring is stretched, and the arc recess of jack up post and drag the platform changes all and forms the tight state of top with the intubate, prevents to punch a hole the position of walking of intubate in the course of working. At this time, the output end of the second cylinder stretches out to send the heating nozzle of the warmer to the upper part of the punching position of the insertion pipe, the insertion pipe is heated, the first cylinder stretches out downwards and drives the punch to move downwards in the limiting hole of the punch limiting block, the punch punches the insertion pipe, after the punching is finished, the top cylinder retracts, the top column is recovered downwards under the reset action of the first reset spring and the second reset spring, and the dragging table and the insertion pipe are in a spaced state. The clamping state and the spacing state of the dragging table and the insertion pipe are realized by utilizing the matching of the dragging table of the double-position clamp and the jacking cylinder, so that the accuracy of the punching processing process of the insertion pipe is improved.
Further, in another embodiment of the cannula punching device of the present application, the working platform is further provided with a blanking groove, and the blanking groove is correspondingly disposed at the edge of the turntable. The blanking mouth department of silo upper end down is equipped with L type and separates the baffle, L type separates the baffle and is higher than work platform, prevents to drop on work platform when getting the intubate.
In the concrete implementation, after punching processing is completed on the inserted pipe, the top cylinder is contracted downwards, and the inserted pipe on the double-position clamp is driven to rotate into the blanking groove through the turntable at the moment, and the processed inserted pipe is taken down.
In the description of the present utility model, it should be understood that the terms "middle," "length," "upper," "lower," "front," "rear," "vertical," "horizontal," "inner," "outer," "radial," "circumferential," and the like indicate an orientation or a positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model.
In the present utility model, unless expressly stated or limited otherwise, a first feature "on" a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. The meaning of "a plurality of" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
The above description is for the purpose of illustrating the embodiments of the present utility model and is not to be construed as limiting the utility model, but is intended to cover all modifications, equivalents, improvements and alternatives falling within the spirit and principles of the utility model.
Claims (9)
1. The punching device for the cannula is characterized by comprising a working platform, a turntable, a double-position clamp, a top position cylinder and a double-position punching mechanism; the turntable is arranged on the working platform; a station groove is formed on the edge of the turntable; the station groove is provided with a double-position clamp; a top position cylinder is arranged below the double-position clamp, and a double-position punching mechanism is arranged above the double-position clamp;
the double-position clamp comprises clamping plates, bearing seats, jacking parts and rotating shafts, wherein the clamping plates are connected to the station grooves, the bearing seats are arranged at two ends of the top surface of each clamping plate, each bearing seat is connected with each rotating shaft, and one end of each rotating shaft is sleeved with an insertion pipe; the clamping plate is also connected with a jacking component; the upper end of the jacking component is provided with an arc-shaped groove matched with the insertion pipe, and the lower end of the jacking component is connected with the output end of the jacking cylinder;
the double-position punching mechanism comprises a punching assembly and a heating assembly; punching assemblies are correspondingly arranged above the two insertion tubes respectively, and heating assemblies are correspondingly arranged on the sides of the two insertion tubes respectively;
the punching assembly comprises a first cylinder, a first fixing piece and a punch; the top end of the first fixing piece is fixedly connected with the device frame body; the first fixing piece is arranged into a groove, and a first cylinder is arranged at the groove; the output end of the first cylinder is connected with a punch; the punch corresponds to the position to be punched of the insertion tube;
the heating component comprises a second cylinder, a second fixing assembly and a warmer; the second fixing component is fixedly connected with the device frame body; the second fixing assembly is provided with a second cylinder; the output end of the second cylinder is connected with a warmer; the heating end of the heater corresponds to the punching processing position of the insertion pipe.
2. The cannula punch device of claim 1, wherein the punch assembly further comprises a punch stop; a first sliding rail is further arranged at the groove of the first fixing piece, and the punching limiting block is in sliding connection with the sliding rail; the punch limiting block is provided with a limiting hole, the punch is matched with the limiting block, and the punch penetrates through the limiting block.
3. The cannula punch device of claim 1, wherein the second securing member comprises a first securing plate, a second securing plate, and a cylinder securing member; the upper end of the first fixing plate is fixedly connected with the device frame body, and the lower end of the first fixing plate is fixedly connected with the second fixing plate; the second fixing plate is fixedly connected with the cylinder fixing piece; the cylinder fixing piece is fixedly connected with the second cylinder; the second fixing plate is provided with a second sliding rail, the warmer is provided with a sliding block matched with the second sliding rail, and sliding connection between the warmer and the second fixing plate is formed based on the cooperation of the second sliding rail and the sliding block; the output end of the second cylinder is fixedly connected with a sliding block on the warmer.
4. A cannula punching device according to claim 3, characterized in that the heating end of the warmer is provided with a heating nozzle, and the heating nozzle is of circular arc design; the heating nozzle corresponds to the punching processing position of the insertion pipe.
5. The cannula punch device of claim 1, wherein the jacking component comprises a drag table, a jack post, a spring stop, a stop post, a first return spring, and a second return spring; the two ends of the clamping plate respectively penetrate through the limit posts; the top ends of the two limiting columns are in contact connection with the bottom end of the dragging table, and the lower ends of the two limiting columns are connected with the spring limiting block; the limiting column is sleeved with a first reset spring between the clamping plate and the spring limiting block; the upper end of the top column sequentially penetrates through the spring limiting block, the clamping plate and the dragging table from bottom to top; a cavity is arranged at the position of the top column in the dragging table, a second reset spring is sleeved on the top column at the position of the cavity in a penetrating way, and a shaft neck for limiting is arranged at the joint of the upper end of the top column connected with the second reset spring; the bottom of spring stopper is connected with the output of top position cylinder.
6. The cannula punching device according to claim 5, wherein one end of the rotating shaft sleeved with the cannula is provided with a foolproof bevel; the rotating shaft is sleeved at the position of the bearing seat through a limiting hole, and a limiting bolt matched with the limiting hole is arranged at the side end of the bearing seat.
7. The cannula punching device according to claim 5, wherein the bottom ends of the dragging platforms are respectively provided with a limiting groove matched with the two limiting columns; the top ends of the two limit posts are respectively inserted into the limit grooves to form contact connection.
8. The cannula punching device according to claim 1, wherein the working platform is further provided with a blanking groove, and the blanking groove is correspondingly arranged at the edge position of the turntable.
9. The cannula punching device according to claim 8, wherein an L-shaped baffle is arranged at the feed opening at the upper end of the feed chute, and the L-shaped baffle is higher than the working platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320897295.1U CN220348581U (en) | 2023-04-20 | 2023-04-20 | Punching device for cannula |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320897295.1U CN220348581U (en) | 2023-04-20 | 2023-04-20 | Punching device for cannula |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220348581U true CN220348581U (en) | 2024-01-16 |
Family
ID=89484662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320897295.1U Active CN220348581U (en) | 2023-04-20 | 2023-04-20 | Punching device for cannula |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220348581U (en) |
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2023
- 2023-04-20 CN CN202320897295.1U patent/CN220348581U/en active Active
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