CN110786899A - Device for limiting using times of disposable instrument and disposable machine - Google Patents
Device for limiting using times of disposable instrument and disposable machine Download PDFInfo
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- CN110786899A CN110786899A CN201911235904.1A CN201911235904A CN110786899A CN 110786899 A CN110786899 A CN 110786899A CN 201911235904 A CN201911235904 A CN 201911235904A CN 110786899 A CN110786899 A CN 110786899A
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- 230000007246 mechanism Effects 0.000 claims abstract description 54
- 238000010304 firing Methods 0.000 claims abstract description 18
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 230000009471 action Effects 0.000 abstract description 13
- 238000009527 percussion Methods 0.000 abstract description 8
- 230000001954 sterilising effect Effects 0.000 abstract description 7
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 7
- 230000008859 change Effects 0.000 abstract description 4
- 230000032683 aging Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 12
- 238000005520 cutting process Methods 0.000 description 9
- 230000000712 assembly Effects 0.000 description 5
- 238000000429 assembly Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000003825 pressing Methods 0.000 description 3
- 208000015181 infectious disease Diseases 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
- A61B2560/02—Operational features
- A61B2560/0266—Operational features for monitoring or limiting apparatus function
- A61B2560/028—Arrangements to prevent overuse, e.g. by counting the number of uses
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Abstract
The application discloses device of restriction disposable instrument number of times of use, disposable instrument include the percussion handle and change the subassembly, include: the counting disc is used for recording the assembling times of the replacement assembly and is provided with a triggering structure; the driving mechanism is used for driving the counting disc to rotate by a first preset angle when the replacement component is assembled each time; a locking mechanism for locking the firing handle when the trigger structure is rotated to a preset position. This application comes the record to change the assembly number of times of subassembly through the rotation angle of counting dish, when the counting dish rotates to predetermineeing the angle, control percussion handle locking to make disposable instrument can't carry out the percussion action, use the number of times restriction scheme reliable, more can guarantee to carry out the number of times restriction and effective protection before the mechanical properties of apparatus is ageing out of service, and this application adopts mechanical structure to count, can use irradiation sterilization technology, but has improved producibility and implementability. The application also discloses a disposable apparatus having the above beneficial effects.
Description
Technical Field
The application relates to the field of medical instruments, in particular to a device for limiting the using times of a disposable instrument and the disposable instrument.
Background
In the actual use of disposable devices, it may happen that although the devices are labeled as disposable devices, the users still violate the regulations and can use the devices repeatedly after sterilization, resulting in damage to the devices or infection in the hospital. In the disposable medical devices currently used, there are few restrictions on the number of uses or the time of use unless the devices are highly intelligent. The equipment with higher intelligent degree generally adopts an EEPROM (Electrically erasable programmable Memory) as a record, and uses an MCU to count the number of times of use, and this method is Only for the equipment class with the MCU (micro controller Unit) and the equipment cannot be sterilized by irradiation, otherwise, the EEPROM and the MCU will be damaged by strong irradiation.
Therefore, how to provide a solution to the above technical problem is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The device for limiting the use times of the disposable instrument can reliably limit the use times of the disposable instrument, ensure that the limitation and effective protection are carried out before the mechanical property of the instrument is aged and invalid, is not influenced by an irradiation sterilization process, and improves the producibility and the implementability; it is another object of the present application to provide a disposable instrument comprising the above-described means for limiting the number of uses of the disposable instrument.
In order to solve the above technical problem, the present application provides a device for limiting the number of times a disposable instrument is used, the disposable instrument includes a firing handle and a replacement component, including:
the counting disc is used for recording the assembling times of the replacement assembly and is provided with a triggering structure;
the driving mechanism is used for driving the counting disc to rotate by a first preset angle each time the replacing component is assembled;
a locking mechanism for locking the firing handle when the trigger structure is rotated to a preset position.
Preferably, the driving mechanism comprises a first pushing wheel and a second pushing wheel which are coaxially distributed, the counting disc comprises a first counting disc and a second counting disc which is coaxially distributed with the first counting disc and provided with the triggering structure, and the first counting disc and the second counting disc are respectively provided with a plurality of gear teeth which are sequentially distributed along the circumferential direction; the first pushing wheel is meshed with the gear teeth of the first counting disc, the first counting disc is provided with a protrusion used for pushing the second pushing wheel to rotate after the first counting disc rotates for a second preset angle, and the second pushing wheel is meshed with the gear teeth of the second counting disc.
Preferably, the driving mechanism further comprises a push rod mechanism, a driving gear meshed with the first pushing wheel and a rotating rod hinged to the driving gear, and a ratchet wheel is arranged on the side wall of the driving gear;
when the push rod mechanism pushes the rotating rod along a preset direction, the rotating rod rotates around the hinge shaft and pushes the ratchet wheel to rotate by a first preset angle.
Preferably, the push rod mechanism comprises a push rod and an electromagnetic driving mechanism for controlling the push rod to move.
Preferably, the trigger structure is a pit arranged on the side wall of the second counting disc;
the locking mechanism comprises an ejector pin, and when the ejector pin is positioned in the concave pit, the ejector pin is abutted against the firing handle so as to lock the firing handle;
or the locking mechanism comprises a microswitch, and when the microswitch is positioned in the pit, the power supply circuit of the firing handle is cut off.
Preferably, the ejector pin is provided with a limiting bulge, and the spring is sleeved on the periphery of the ejector pin and extrudes the limiting bulge towards the second counting disc.
Preferably, the head part of the thimble, which is in contact with the second counting disc, is of an arc-shaped surface structure.
Preferably, the head of the microswitch, which is in contact with the second counting disc, is of a triangular structure.
Preferably, the first counting disc and the second counting disc are sleeved on the periphery of the first positioning shaft, the first positioning shaft is sleeved with a compression spring, and the end part of the compression spring is abutted to the second counting disc.
In order to solve the above technical problem, the present application further provides a disposable device comprising a device for limiting the number of uses of the disposable device as described in any one of the above.
The application provides a device of restriction disposable instrument use number of times, the rotation angle through the counting dish records the assembly number of times of changing the subassembly, when the counting dish rotates to predetermineeing the angle, control percussion handle locking, so that disposable instrument can't carry out the percussion action, use number of times restriction scheme reliably, more can guarantee to carry out the number of times restriction and effective protection before the ageing inefficacy of mechanical properties of apparatus, and this application adopts mechanical structure to count, can use irradiation sterilization technology, producibility and practicality have been improved. The present application also provides a disposable device having the same beneficial effects as the above-described device for limiting the number of uses of a disposable device.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the prior art and the embodiments are briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram of a device for limiting the number of uses of a disposable instrument according to the present application;
FIG. 2 is a schematic structural view of another apparatus for limiting the number of uses of a disposable device provided herein;
FIG. 3a is a schematic view of the engagement of a pusher mechanism and a rotating lever when a replacement component is not assembled as provided herein;
FIG. 3b is a schematic view of the push rod mechanism and the rotating rod in cooperation with the replacement assembly as provided herein;
FIG. 3c is a schematic view of the push rod mechanism and turn rod engagement during assembly of another replacement assembly as provided herein;
FIG. 4 is a schematic structural diagram of a push rod mechanism provided in the present application;
FIG. 5 is a schematic view of a thimble cooperating with a second counting plate according to the present disclosure;
FIG. 6 is a schematic view of another thimble of the present application cooperating with a second counting plate;
FIG. 7 is a schematic view of a microswitch in cooperation with a second counting disk as provided herein;
fig. 8 is a schematic structural diagram of a microswitch provided in the present application;
fig. 9 is a schematic structural diagram of another microswitch provided in the present application.
Wherein the reference numerals in fig. 1 to 9 are:
the device comprises a push rod mechanism 1, a rotating rod 2, a ratchet wheel 3, a driving gear 4, a compression spring 5, a first pushing wheel 6, a second pushing wheel 7, a second counting disc 8, a first counting disc 9, a microswitch 10, a push rod 11, an electromagnetic driving mechanism 12 and a thimble 13; concave 81, contact piece 101, rotation axis 102, contact point 103, lead wire 104, and auxiliary spring 105.
Detailed Description
The core of the application is to provide a device for limiting the using times of the disposable instrument, which can reliably limit the using times of the disposable instrument, ensure the number limitation and effective protection before the mechanical property of the instrument is aged and invalid, is not influenced by an irradiation sterilization process, and improve the producibility and the implementability; it is another object of the present application to provide a disposable instrument comprising the above-described means for limiting the number of uses of the disposable instrument.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the actual use of disposable devices, it may happen that although the devices are labeled as disposable devices, the users still violate the regulations and can use the devices repeatedly after sterilization, resulting in damage to the devices or infection in the hospital. In the disposable medical devices currently used, there are few restrictions on the number of uses or the time of use unless the devices are highly intelligent. The equipment with higher intelligent degree generally adopts EEPROM as record, MCU is used for counting the using times, the method only aims at the equipment with the MCU and the charged equipment, the universality is poorer, the equipment can not be sterilized by irradiation, otherwise the EEPROM and the MCU can be damaged in strong irradiation. Based on the problems of the related art, the present application provides a new scheme for limiting the number of times of using a disposable instrument, and the following embodiments achieve the purpose of reliably limiting the number of times of using the disposable instrument and improving the producibility and the practicability.
The following provides a detailed description of a device for limiting the number of uses of a disposable instrument.
Referring to fig. 1 to 9, fig. 1 and 2 are schematic structural views of a device for limiting the number of times of using a disposable instrument according to the present application. The device for limiting the number of uses of the disposable instrument comprises:
the counting disc is used for recording the assembling times of the replacement assembly and is provided with a triggering structure;
the driving mechanism is used for driving the counting disc to rotate by a first preset angle when the replacement component is assembled each time;
a locking mechanism for locking the firing handle when the trigger structure is rotated to a preset position.
In particular, the present application is applicable to disposable instruments, which may include, but are not limited to, disposable staplers with replaceable staple cartridges, disposable cutting staplers with replaceable cutting assemblies, disposable electric staplers with replaceable staple cartridges, disposable electric staplers with replaceable cutting assemblies. The replacement assembly in the present application may specifically include a staple cartridge and a cutting assembly.
Specifically, the device of restriction disposable instrument number of times of use that this application provided, the structure is shown as figure 1, including the count dish, actuating mechanism and locking mechanical system, wherein, the count dish is used for the record to change the assembly number of times of subassembly, actuating mechanism with change the subassembly contact, once changing the subassembly assembly, actuating mechanism drive count dish rotatory first preset angle, when the trigger structure on the count dish rotates to preset position, locking mechanical system will fire the handle locking, so that disposable instrument can't carry out the percussion action, thereby reach the purpose of restriction disposable instrument number of times of use.
Specifically, in order to meet the requirement of the disposable instrument on the number of times of use, as a preferred embodiment, the present application may be configured with two counting discs, which are a first counting disc 9 and a second counting disc 8, the first counting disc 9 and the second counting disc 8 are coaxially distributed, the second counting disc 8 is provided with a trigger structure, the first counting disc 9 and the second counting disc 8 are respectively provided with a plurality of gear teeth sequentially distributed along the circumferential direction, correspondingly, the driving mechanism includes a first pushing wheel 6 and a second pushing wheel 7 coaxially distributed, the first pushing wheel 6 is engaged with the gear teeth of the first counting disc 9, under the action of the trigger handle, the first pushing wheel 6 pushes the first counting disc 9 to rotate by a first preset angle, further, the first counting disc 9 is further provided with a protrusion, the second pushing wheel 7 is engaged with the gear teeth of the second counting disc 8, when the first counting disc 9 rotates by a second preset angle, the bulge on the counting plate can push the second pushing wheel 7 to rotate, so that the second counting plate 8 is driven to rotate by a preset angle, and the second preset angle is larger than the first preset angle.
In particular, taking the configuration shown in fig. 1 and 2 as an example, the projections may be provided on the side wall of the first counting disk 9 facing the second counting disk 8, with the projections being located in the edge region of the first counting disk 9 so as to be in contact with the second pusher wheel 7.
The teeth of a cogwheel of second drive wheel can adopt long and short tooth structure, and long tooth and short tooth distribute along the circumference of second drive wheel in turn, and the length of the teeth of a cogwheel indicates along the length of axial extension, when first counting dish 9 rotates to the second and predetermines the angle, the arch that sets up on it meshes with long tooth to it is rotatory to make first counting dish 9 drive second drive wheel, thereby drives the rotatory angle of predetermineeing of second counting dish 8.
Further, the first counting plate 9 and the second counting plate 8 can be consistent or inconsistent, for the convenience of production, the consistent counting plate is preferably adopted, the counting number is preferably 5, so that the using time of the disposable anastomat instrument is not more than 20 times, the diameter of the counting plate can be 5-15mm, the preferred diameter of the counting plate is 8mm, and the thickness of the counting plate is 3-10mm, and the preferred thickness of the counting plate is 6 mm.
Of course, the number of the counting discs may also be set to be multiple, the second preset angle may be 360 degrees, and may also be other angles, which is not limited herein.
The application provides a device of restriction disposable instrument use number of times, the rotation angle through the counting dish records the assembly number of times of changing the subassembly, when the counting dish rotates to predetermineeing the angle, control percussion handle locking, so that disposable instrument can't carry out the percussion action, use number of times restriction scheme reliably, more can guarantee to carry out the number of times restriction and effective protection before the ageing inefficacy of mechanical properties of apparatus, and this application adopts mechanical structure to count, can use irradiation sterilization technology, producibility and practicality have been improved.
On the basis of the above-described embodiment:
as a preferred embodiment, the driving mechanism further comprises a push rod mechanism 1, a driving gear 4 meshed with the first pushing wheel 6, and a rotating rod 2 hinged to the driving gear 4, wherein a ratchet wheel 3 is arranged on the side wall of the driving gear 4;
when the push rod mechanism 1 pushes the rotating rod 2 along the preset direction, the rotating rod 2 rotates around the hinge shaft and pushes the ratchet wheel 3 to rotate by a first preset angle.
Specifically, referring to fig. 1, the driving mechanism includes a push rod mechanism 1, a driving gear 4 engaged with the first pushing wheel 6, and a rotating rod 2 hinged to the driving gear 4, wherein the driving gear 4 is fixedly connected to the ratchet wheel 3, and the central axis is collinear. When the subassembly is changed in the assembly at every turn, push rod mechanism 1 promotes rotary rod 2 along predetermineeing the direction, and rotary rod 2 is rotatory around the articulated shaft to it is rotatory to promote ratchet 3, and ratchet 3 is rotatory to drive gear 4 and is rotatory, thereby makes drive gear 4 promote first count dish 9 rotatory. Considering that when different nail bins and different cutting assemblies are used, due to the different lengths of the nail bins and the cutting assemblies, the push rod mechanism 1 is provided with a boss which is matched with the plane of the rotating rod 2, so that when the nail bins and the cutting assemblies with different lengths are inserted, the push rod mechanism 1 is matched with the rotating rod 2 to correctly push the ratchet wheel 3 to rotate so as to complete one-time counting, and the matching schematic diagrams of the push rod mechanism 1 and the rotating rod 2 are shown in fig. 3a to 3 c.
As a preferred embodiment, the push rod mechanism 1 includes a push rod 11, and an electromagnetic driving mechanism 12 for controlling the movement of the push rod 11.
Specifically, referring to fig. 4, the push rod mechanism 1 may include a push rod 11 and an electromagnetic driving mechanism 12 for controlling the push rod 11 to move, the electromagnetic driving mechanism 12 may be an electromagnet, and after any kind of staple cartridge or cutting assembly is installed in the electric stapler with replaceable staple cartridge and the electric stapler with replaceable cutting assembly, the contacts are connected, the electromagnet is powered on, the push rod 11 pushes out a fixed length, and pushes the rotating rod 2 and the ratchet 3 to move so as to complete counting.
As a preferred embodiment, the triggering structure is a pit 81 provided in the side wall of the second counting disc 8;
the locking mechanism comprises a thimble 13, and when the thimble 13 is positioned in the concave pit 81, the thimble is abutted against the firing handle so as to lock the firing handle;
or the locking mechanism comprises a microswitch 10, and when the microswitch 10 is positioned in the pit 81, the power supply circuit of the firing handle is cut off.
In this embodiment, referring to fig. 5 and 6, the locking mechanism may be specifically a thimble 13, the thimble 13 is provided with a limiting protrusion, and the spring is sleeved on the periphery of the thimble 13 and presses the thimble 13 against the surface of the second counting disc 8 through the limiting protrusion. The second counting disc 8 is provided with lands and pits 81. Along with the rotation of the second counting disc 8, when the thimble 13 contacts with the plane of the second counting disc 8, under the plane limitation, the limit protrusion is abutted to the preset position, at this moment, the thimble 13 is abutted to a stop block, when the pit 81 of the second counting disc 8 rotates to the limit protrusion position, the limit protrusion receives the elastic action of the spring and moves towards the second counting disc 8, so that the thimble 13 enters the pit 81, because the thimble 13 has a certain displacement, the stop block can not be abutted, the stop block falls down to abut against the firing handle, so that a user can not hold the firing handle to execute the firing action. As a preferred embodiment, the head part of the thimble 13 contacting with the second counting disc 8 is of a cambered surface structure, so that the thimble cannot rotate again when sliding and locking normally.
In this embodiment, referring to fig. 7, the locking mechanism may be specifically a micro switch 10, the specific structure of the micro switch 10 may be as shown in fig. 8 and 9, and includes a housing, which may include a contact plate 101, an auxiliary spring 105, a contact 103, and an outgoing line 104 connected to the contact 103, and the micro switch 10 and two counting disks are mounted on the same shaft. The action stroke of the microswitch 10 is 1-3mm, preferably 1.5 mm. The head of the microswitch 10 contacting the second counting disc 8 is in a triangular structure, namely a right-angled triangle contact surface is adopted, and the pressing can be carried out only in one direction, so that the counting disc is locked when passing through the pit 81 and can not act any more. Specifically, as the second counting disc 8 rotates, when the plane of the second counting disc 8 rotates to the position of the microswitch 10, the contact plate 101 presses the auxiliary spring 105 downwards through the rotating shaft 102 under the action of the external force of the plane, the contact 103 is not contacted, the power supply of the power supply control mechanism in the disposable instrument control system is not affected, when the pit 81 of the second counting disc 8 rotates to the position of the microswitch 10, because the external force provided by the plane does not exist, the contact plate 101 is ejected into the pit 81 through the rotating shaft 102, at the moment, the contact 103 is contacted, and a control signal is output through the outgoing line 104 to disconnect the power supply of the power supply control mechanism in the disposable instrument control system, so that the disposable electric stapler does not respond to any action.
In particular, the structure proposed by the application is of an irreversible type, so that the structure is more reliable than other using time limit methods, and can ensure time limit and protection before the mechanical performance of the instrument is aged and failed than other methods for limiting the power-on time of a power supply.
As a preferred embodiment, the first counting disc 9 and the second counting disc 8 are both sleeved on the outer periphery of the first positioning shaft, the first positioning shaft is sleeved with the pressing spring 5, and the end of the pressing spring 5 abuts against the second counting disc 8.
Specifically, a compression spring 5 is further arranged on the outer side of the second counting disc 8, and the compression spring 5 can ensure tight engagement between each counting disc and the ratchet 3 and can keep a certain distance and compression for the microswitch 10.
In another aspect, the present application also provides a disposable instrument comprising a device as in any of the above for limiting the number of uses of the disposable instrument.
The disposable instrument provided by the application has the same beneficial effects as the device for limiting the using times of the disposable instrument.
For the introduction of the disposable apparatus provided in the present application, please refer to the above embodiments, which are not repeated herein.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A device for limiting the number of uses of a disposable instrument, the disposable instrument including a firing handle and a replacement assembly, comprising:
the counting disc is used for recording the assembling times of the replacement assembly and is provided with a triggering structure;
the driving mechanism is used for driving the counting disc to rotate by a first preset angle each time the replacing component is assembled;
a locking mechanism for locking the firing handle when the trigger structure is rotated to a preset position.
2. The device for limiting the number of times of using the disposable instrument is characterized in that the driving mechanism comprises a first pushing wheel and a second pushing wheel which are coaxially distributed, the counting disc comprises a first counting disc and a second counting disc which is coaxially distributed with the first counting disc and is provided with the triggering structure, and the first counting disc and the second counting disc are respectively provided with a plurality of gear teeth which are sequentially distributed along the circumferential direction; the first pushing wheel is meshed with the gear teeth of the first counting disc, the first counting disc is provided with a protrusion used for pushing the second pushing wheel to rotate after the first counting disc rotates for a second preset angle, and the second pushing wheel is meshed with the gear teeth of the second counting disc.
3. The device for limiting the number of times of using the disposable instrument as recited in claim 2, wherein the driving mechanism further comprises a push rod mechanism, a driving gear engaged with the first pushing wheel, a rotating rod hinged to the driving gear, and a ratchet wheel is arranged on the side wall of the driving gear;
when the push rod mechanism pushes the rotating rod along a preset direction, the rotating rod rotates around the hinge shaft and pushes the ratchet wheel to rotate by a first preset angle.
4. The device for limiting the number of uses of a disposable instrument as recited in claim 3 wherein said pusher mechanism comprises a pusher rod, an electromagnetic drive mechanism controlling the movement of said pusher rod.
5. The device for limiting the number of uses of a disposable instrument as recited in claim 2, wherein said trigger structure is a dimple formed in a sidewall of said second counting disk;
the locking mechanism comprises an ejector pin, and when the ejector pin is positioned in the concave pit, the ejector pin is abutted against the firing handle so as to lock the firing handle;
or the locking mechanism comprises a microswitch, and when the microswitch is positioned in the pit, the power supply circuit of the firing handle is cut off.
6. The device for limiting the number of times of using disposable instrument of claim 5, wherein said thimble is provided with a limit protrusion, and a spring is sleeved on the periphery of said thimble and presses said limit protrusion toward said second counting plate.
7. The device for limiting the number of times of using disposable instruments according to claim 5 or 6, characterized in that the head of said thimble contacting said second counting disc is a cambered surface structure.
8. The device for limiting the number of uses of a disposable instrument as recited in claim 5, wherein the head of said microswitch that contacts said second counting disk is of a triangular configuration.
9. The device for limiting the number of times of using the disposable instrument as recited in claim 2, wherein the first counting plate and the second counting plate are both sleeved on the outer circumference of a first positioning shaft, the first positioning shaft is sleeved with a compression spring, and the end of the compression spring is abutted against the second counting plate.
10. A disposable instrument comprising a means for limiting the number of uses of the disposable instrument as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911235904.1A CN110786899A (en) | 2019-12-05 | 2019-12-05 | Device for limiting using times of disposable instrument and disposable machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911235904.1A CN110786899A (en) | 2019-12-05 | 2019-12-05 | Device for limiting using times of disposable instrument and disposable machine |
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| CN110786899A true CN110786899A (en) | 2020-02-14 |
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| CN201911235904.1A Pending CN110786899A (en) | 2019-12-05 | 2019-12-05 | Device for limiting using times of disposable instrument and disposable machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113842184A (en) * | 2021-10-20 | 2021-12-28 | 常州威克医疗器械有限公司 | Percussion safety device for electric endoscope anastomat |
| CN114187737A (en) * | 2020-09-15 | 2022-03-15 | 迈普通信技术股份有限公司 | Connector service life monitoring guiding counting device, monitoring system and monitoring method |
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Application publication date: 20200214 |