CN113288275A - Endoscope anastomat convenient for nail cartridge replacement - Google Patents

Endoscope anastomat convenient for nail cartridge replacement Download PDF

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Publication number
CN113288275A
CN113288275A CN202110569253.0A CN202110569253A CN113288275A CN 113288275 A CN113288275 A CN 113288275A CN 202110569253 A CN202110569253 A CN 202110569253A CN 113288275 A CN113288275 A CN 113288275A
Authority
CN
China
Prior art keywords
tooth
reset
nail
cartridge replacement
replacement according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110569253.0A
Other languages
Chinese (zh)
Inventor
蒋易良
桑小林
王春华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changzhou Ankang Medical Equipment Co ltd
Original Assignee
Changzhou Ankang Medical Equipment Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Changzhou Ankang Medical Equipment Co ltd filed Critical Changzhou Ankang Medical Equipment Co ltd
Priority to CN202110569253.0A priority Critical patent/CN113288275A/en
Publication of CN113288275A publication Critical patent/CN113288275A/en
Pending legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/068Surgical staplers, e.g. containing multiple staples or clamps
    • A61B17/072Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
    • A61B17/07207Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously the staples being applied sequentially
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/30Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/36Image-producing devices or illumination devices not otherwise provided for
    • A61B90/361Image-producing devices, e.g. surgical cameras
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/36Image-producing devices or illumination devices not otherwise provided for
    • A61B90/37Surgical systems with images on a monitor during operation
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/068Surgical staplers, e.g. containing multiple staples or clamps
    • A61B17/072Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
    • A61B2017/07214Stapler heads
    • A61B2017/07271Stapler heads characterised by its cartridge

Abstract

The invention discloses an endoscope anastomat convenient for replacing a nail bin, which comprises a protective shell and a connecting assembly, wherein a reset button is arranged on the front side of the protective shell, a reset mechanism is arranged in the protective shell, a fixed handle is fixedly connected to the lower part of the protective shell, and a movable handle is arranged on the left side of the fixed handle; the connecting assembly is connected with the straight pipe in a clamping mode. This make things convenient for chamber mirror anastomat that nail storehouse was changed, be provided with canceling release mechanical system, closed tooth piece is convenient for control through restoring to the throne and pushes away the tooth, it pushes away the tooth through pushing away tooth torsional spring and torsional spring round pin hub connection to restore to the throne, it can promote the transmission rack and remove to the near-end to restore to the throne, during the antiport reset button, the pawl structure that resets and pushes away the tooth skids on the ratchet structure of section that restores to the throne, do not produce the effort to the transmission rack, and then when making the tooth that pushes away that restores to the throne with the section meshing, can only produce the power to the near-end to the transmission rack, the transmission rack removes to the near-end, make keep silent and open smoothly.

Description

Endoscope anastomat convenient for nail cartridge replacement
Technical Field
The invention relates to the technical field related to endoscope staplers, in particular to an endoscope stapler convenient for replacing a nail bin.
Background
An endoscope anastomat is used as one kind of surgical instrument, and the anastomat works on the principle that the anastomat is clamped at a focus position to perform excision, and the focus is sutured while the excision is performed. In practical use, there are two main types of endoscopic staplers. One is a manual endoscope anastomat, and the other is an electric endoscope anastomat. The manual endoscope anastomat mainly realizes the forward movement of a cutting knife by a rack and a triggering propelling piece, and the backward movement needs to be manually pulled back. The nail bin assembly is opened and closed by pushing the inclined plane on the nail abutting seat by a cutter pin on the cutting knife so as to realize the opening and closing of the nail abutting seat.
The existing endoscope anastomat is inconvenient in nail bin replacement, short of a reset function and inconvenient to use, and the existing equipment needs to be improved aiming at the problems.
Disclosure of Invention
The invention aims to provide an endoscope anastomat convenient for replacing a nail bin, and aims to solve the problems that the nail bin is not convenient to replace, the reset function is lacked, and the endoscope anastomat is inconvenient to use in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: an endoscope anastomat convenient for replacing a nail bin comprises a protective shell and a connecting assembly,
the front side of the protection shell is provided with a reset button, a reset mechanism is arranged in the protection shell, the reset mechanism comprises a torsion spring pin shaft, a tooth pushing torsion spring, a reset closing tooth piece and a reset tooth pushing piece, the right side of the protection shell is in threaded connection with a protection cover, a fixed handle is fixedly connected below the protection shell, a movable handle is arranged on the left side of the fixed handle, the left side of the protection shell is connected with an adjusting shell through a connecting piece, and an adjusting knob is arranged above the adjusting shell;
the connecting assembly is connected with the straight pipe in a clamping mode and comprises an assembly butt joint, a connecting rod, a rotating head, a connecting pin, a nail bin, a protective cover, a nail pushing sheet and a nail abutting seat.
Preferably, the reset button is slidably connected with the sliding groove.
Preferably, the torsion spring pin shaft is fixedly connected with the reset push tooth through the push tooth torsion spring, a reset closing tooth piece is arranged above the reset push tooth, and meanwhile, the reset closing tooth piece is connected with the reset button.
Preferably, a storage battery is arranged in the protective cover, and a first battery cover is arranged on the protective cover.
Preferably, a standby battery is arranged in the fixed handle, and a second battery cover is arranged on the fixed handle.
Preferably, the fixed handle is provided with a safety button.
Preferably, a motor is arranged in the adjusting shell and is connected with the straight pipe through a motor shaft.
Preferably, the one end of connecting rod is provided with the subassembly interface, and the subassembly interface is connected with the straight tube block, it is connected with the connecting rod rotation to rotate the head, and rotates the head and rotate with to support the nail seat through the connecting pin and be connected.
Preferably, the nail bin is connected with the connecting rod through the protective cover, the nail bin is clamped and fixed with the protective cover, a nail pushing piece is arranged on one side of the nail bin, and a plurality of suturing nails are arranged inside the nail bin.
Preferably, the left side of the tail end of the nail abutting seat is provided with a miniature camera, and the front side and the rear side of the tail end of the nail abutting seat are symmetrically provided with illuminating lamps.
Compared with the prior art, the invention has the beneficial effects that: the endoscope anastomat convenient for replacing the nail bin,
(1) the reset mechanism is arranged, the tooth sheet is closed through resetting, the reset push tooth is convenient to control, the reset push tooth is connected with the torsion spring pin shaft through the push tooth torsion spring, the push tooth torsion spring is arranged, so that the reset push tooth can be more firmly meshed with the ratchet of the reset section, the reset push tooth can push the transmission rack to move towards the near end, when the reset button is rotated reversely, the pawl structure of the reset push tooth slips on the ratchet structure of the reset section, acting force is not generated on the transmission rack, and therefore when the reset push tooth is meshed with the reset section, only near-end force can be generated on the transmission rack, the transmission rack moves towards the near end, and the jaw can be opened smoothly;
(2) the miniature camera and the illuminating lamp are arranged, the miniature camera moves along with the movement of the nail abutting seat, so that the situation of a cutting part can be observed more comprehensively and in multiple angles by the miniature camera, the illuminating lamp provides illumination for the miniature camera, the situation of the cutting part can be observed better by the electric endoscope anastomat, and the use is convenient;
(3) the standby battery is arranged, so that the standby battery can be used when the storage battery is in a power failure state, the electric quantity is prevented from being insufficient in the operation process, and the inconvenience caused by the replacement of the storage battery in the operation process is avoided;
(4) the motor shaft is driven to rotate through the starting motor, the straight pipe is driven to rotate, the nail bin is driven, the suturing nails are sewed, the nail pushing pieces are driven, the nail pushing seat is abutted, the steering is adjusted, and the direction of the cutting part can be adjusted better.
Drawings
FIG. 1 is a schematic front sectional view of the present invention;
FIG. 2 is a schematic view of the front view of the present invention;
FIG. 3 is a front view of the connecting assembly of the present invention;
FIG. 4 is a front view of the outer appearance of the reset mechanism of the present invention;
FIG. 5 is a schematic view of the front view of the battery according to the present invention;
FIG. 6 is a left-side view of the nail seat, the micro-camera and the illumination lamp of the present invention.
In the figure: 1. the protection device comprises a protection shell, 2, a sliding groove, 3, a reset button, 4, a reset mechanism, 401, a torsion spring pin shaft, 402, a tooth pushing torsion spring, 403, a reset closing tooth sheet, 404, a reset tooth pushing piece, 5, a protection cover, 6, a first battery cover, 7, a storage battery, 8, a fixed handle, 9, a spare battery, 10, a second battery cover, 11, a movable handle, 12, a safety button, 13, a connecting piece, 14, an adjusting knob, 15, an adjusting shell, 16, a motor, 17, a motor shaft, 18, a straight pipe, 19, a connecting assembly, 1901, an assembly butt joint, 1902, a connecting rod, 1903, a rotating head, 1904, a connecting pin, 1905, a nail bin, 1906, a protection cover, 1907, a nail pushing piece, 1908, a nail butt seat, 20, a miniature camera, 21 and an illuminating lamp.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
Referring to fig. 1-6, the present invention provides a technical solution: an endoscope anastomat convenient for replacing a nail bin is characterized in that as shown in figures 1, 2, 3, 4, 5 and 6, a reset button 3 is arranged on the front side of a protective shell 1, the reset button 3 is in sliding connection with a sliding chute 2, the reset button 3 can move left and right in the sliding chute 2, a reset mechanism 4 is arranged in the protective shell 1, the reset mechanism 4 comprises a torsion spring pin shaft 401, a pushing tooth torsion spring 402, a reset closing tooth piece 403 and a reset pushing tooth 404, the torsion spring pin shaft 401 is fixedly connected with the reset pushing tooth 404 through the pushing tooth torsion spring 402, the reset closing tooth piece 403 is arranged above the reset pushing tooth 404, the reset closing tooth piece 403 is connected with the reset button 3, the reset closing tooth piece 403 is controlled through the reset button 3 to control the reset pushing tooth 404, the reset pushing tooth 404 is connected with the torsion spring pin shaft 401 through the pushing tooth torsion spring 402, the pushing tooth torsion spring 402 can enable the reset pushing tooth 404 to be firmly meshed with a reset section ratchet wheel, so that the jaw can be smoothly opened, the right side of the protection shell 1 is in threaded connection with a protective cover 5, a storage battery 7 is arranged in the protective cover 5, a first battery cover 6 is arranged on the protective cover 5, the storage battery 7 provides power for a motor 16, if the storage battery 7 is not powered, the storage battery 7 is replaced by opening the first battery cover 6, a fixed handle 8 is fixedly connected below the protection shell 1, a safety button 12 is arranged on the fixed handle 8, the safety button 12 can prevent from being triggered by mistake, a standby battery 9 is arranged in the fixed handle 8, a second battery cover 10 is arranged on the fixed handle 8, the standby battery 9 prevents the electricity shortage in the operation process from influencing the operation, and avoids the inconvenience brought by replacing the storage battery 7 in the operation process, meanwhile, a movable handle 11 is arranged on the left side of the fixed handle 8, and the left side of the protection shell 1 is connected with an adjusting shell 15 through a connecting piece 13, an adjusting knob 14 is arranged above the adjusting shell 15, a motor 16 is arranged in the adjusting shell 15, the motor 16 is connected with a straight pipe 18 through a motor shaft 17, the motor 16 is started to drive the motor shaft 17 to rotate and drive the straight pipe 18 to rotate, so that the nail bin 1905, the suturing nails, the nail pushing sheet 1907 and the nail abutting seat 1908 are driven to adjust and turn, and the direction of a cutting part can be adjusted better;
as shown in fig. 1, 2, 3 and 6, the connecting assembly 19 is connected to the straight tube 18 in a snap-fit manner, the connecting assembly 19 includes an assembly interface 1901, a connecting rod 1902, a rotating head 1903, a connecting pin 1904, a nail magazine 1905, a protective cover 1906, a nail pushing sheet 1907 and a nail abutting seat 1908, one end of the connecting rod 1902 is provided with the assembly interface 1901, the assembly interface 1901 is connected to the straight tube 18 in a snap-fit manner, the rotating head 1903 is connected to the connecting rod 1902 in a rotating manner, the rotating head 1903 is connected to the nail abutting seat 1908 in a rotating manner via the connecting pin 1904, the rotating head 1903 can be controlled to rotate by twisting the adjusting knob 14, so as to drive the nail magazine 1905 and the nail abutting seat 1908 to rotate, the protective cover 1906 is fixedly engaged with the nail magazine 1905, a plurality of nails are disposed inside the nail magazine 1905, the nail pushing sheet 1907 is disposed on one side of the nail magazine 1905, the protective cover 1906 plays a role in preventing bacteria from infecting the nail pushing sheet 1907, the left side of the end of the nail abutting seat 1908 is provided with the micro camera 20, and the tail end of the nail abutting seat 1908 is symmetrically provided with illuminating lamps 21 at the front side and the rear side, and the illuminating lamps 21 are convenient for providing illumination for the micro camera 20, so that the internal conditions of the cutting part can be observed better by the micro camera 20.
The working principle is as follows: when the endoscope anastomat convenient for replacing the nail bin is used, the connecting rod 1902 is connected with the straight pipe 18 in a clamping way through the component butt joint port 1901, the protective cover 1906 on the outer side of the nail bin 1905 is taken down, the electric endoscope anastomat is inserted into a cutting part, the rotating head 1903 is convenient to control to rotate through twisting the adjusting knob 14, so that the nail bin 1905 and the nail abutting seat 1908 are driven to rotate, the cutting position is convenient to adjust, the micro camera 20 is arranged on the nail abutting seat 1908, the micro camera 20 rotates along with the nail abutting seat 1908, the internal condition of the cutting part is convenient to move and observe, the illuminating lamp 21 is convenient to provide illumination for the micro camera 20, the internal condition of the cutting part is convenient to observe better, the cutting position is determined through the micro camera 20, the tissue to be cut is arranged above the nail bin 1905, the movable handle 11 is closed, the squeezing is carried out for about 15 seconds, after the tissue is fully squeezed, the safety button 12 is pressed down, the movable handle 11 is closed for stable firing times, the storage battery 7 provides power for the motor 16, the motor 16 is started to drive the motor shaft 17 to rotate and drive the straight pipe 18 to rotate, so as to drive the nail bin 1905, the suturing nail, the nail pushing sheet 1907 and the nail abutting seat 1908 to adjust and turn, so as to better adjust the direction of a cutting part, the reset button 3 is used for controlling the reset closing tooth sheet 403 to control the reset pushing tooth 404, the reset pushing tooth 404 is connected with the torsional spring pin 401 through the pushing tooth torsional spring 402, the pushing tooth torsional spring 402 is arranged to enable the reset pushing tooth 404 to be more firmly meshed with a reset section ratchet wheel, so that the jaw can be smoothly opened, the cutting blade performs suturing while performing the cutting on the tissue, the nail pushing sheet 1907 is used in cooperation with the suturing nail and the nail abutting seat 1908 to facilitate the suturing on the cut tissue, after the firing is completed, the movable handle 11 is pushed open, the reset button 3 is pulled back to complete the tissue cutting, the tissue is sutured and released, after which the movable handle 11 is closed and the electric endoscopic stapler is taken out, which completes the whole work and is not described in detail in this description, which is well known to the person skilled in the art.
The terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for simplicity of description only and are not intended to indicate or imply that the referenced devices or elements must be in a particular orientation, constructed and operative in a particular orientation, and are not to be considered limiting of the claimed invention.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims (10)

1. The utility model provides a make things convenient for chamber mirror anastomat that nail storehouse was changed, includes protection casing (1) and coupling assembling (19), its characterized in that:
a reset button (3) is arranged on the front side of the protection shell (1), a reset mechanism (4) is arranged in the protection shell (1), the reset mechanism (4) comprises a torsion spring pin shaft (401), a pushing tooth torsion spring (402), a reset closing tooth piece (403) and a reset pushing tooth (404), a protective cover (5) is in threaded connection with the right side of the protection shell (1), a fixed handle (8) is fixedly connected with the lower part of the protection shell (1), a movable handle (11) is arranged on the left side of the fixed handle (8), the left side of the protection shell (1) is connected with an adjusting shell (15) through a connecting piece (13), and an adjusting knob (14) is arranged above the adjusting shell (15);
the connecting assembly (19) is connected with the straight pipe (18) in a clamping mode, and the connecting assembly (19) comprises an assembly butt joint port (1901), a connecting rod (1902), a rotating head (1903), a connecting pin (1904), a nail bin (1905), a protective cover (1906), a nail pushing sheet (1907) and a nail abutting seat (1908).
2. The endoscopic stapler facilitating cartridge replacement according to claim 1, wherein: the reset button (3) is connected with the sliding groove (2) in a sliding manner.
3. The endoscopic stapler facilitating cartridge replacement according to claim 1, wherein: the torsion spring pin shaft (401) is fixedly connected with the reset push tooth (404) through the push tooth torsion spring (402), a reset closing tooth piece (403) is arranged above the reset push tooth (404), and meanwhile, the reset closing tooth piece (403) is connected with the reset button (3).
4. The endoscopic stapler facilitating cartridge replacement according to claim 1, wherein: a storage battery (7) is arranged in the protective cover (5), and a first battery cover (6) is arranged on the protective cover (5).
5. The endoscopic stapler facilitating cartridge replacement according to claim 1, wherein: a standby battery (9) is arranged in the fixed handle (8), and a second battery cover (10) is arranged on the fixed handle (8).
6. The endoscopic stapler facilitating cartridge replacement according to claim 1, wherein: the fixed handle (8) is provided with a safety button (12).
7. The endoscopic stapler facilitating cartridge replacement according to claim 1, wherein: a motor (16) is arranged in the adjusting shell (15), and the motor (16) is connected with the straight pipe (18) through a motor shaft (17).
8. The endoscopic stapler facilitating cartridge replacement according to claim 1, wherein: one end of the connecting rod (1902) is provided with an assembly butt joint opening (1901), the assembly butt joint opening (1901) is connected with the straight pipe (18) in a clamping mode, the rotating head (1903) is connected with the connecting rod (1902) in a rotating mode, and the rotating head (1903) is connected with the nail abutting seat (1908) in a rotating mode through the connecting pin (1904).
9. The endoscopic stapler facilitating cartridge replacement according to claim 1, wherein: the nail bin (1905) is connected with the connecting rod (1902) through a protective cover (1906), the nail bin (1905) is fixedly clamped with the protective cover (1906), a nail pushing piece (1907) is arranged on one side of the nail bin (1905), and a plurality of stitching nails are arranged inside the nail bin (1905).
10. The endoscopic stapler facilitating cartridge replacement according to claim 1, wherein: the left side of the tail end of the nail abutting seat (1908) is provided with a miniature camera (20), and the front side and the rear side of the tail end of the nail abutting seat (1908) are symmetrically provided with illuminating lamps (21).
CN202110569253.0A 2021-05-25 2021-05-25 Endoscope anastomat convenient for nail cartridge replacement Pending CN113288275A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110569253.0A CN113288275A (en) 2021-05-25 2021-05-25 Endoscope anastomat convenient for nail cartridge replacement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110569253.0A CN113288275A (en) 2021-05-25 2021-05-25 Endoscope anastomat convenient for nail cartridge replacement

Publications (1)

Publication Number Publication Date
CN113288275A true CN113288275A (en) 2021-08-24

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Application Number Title Priority Date Filing Date
CN202110569253.0A Pending CN113288275A (en) 2021-05-25 2021-05-25 Endoscope anastomat convenient for nail cartridge replacement

Country Status (1)

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CN (1) CN113288275A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190117217A1 (en) * 2014-03-26 2019-04-25 Ethicon Llc Interface systems for use with surgical instruments
CN112754575A (en) * 2021-01-23 2021-05-07 常州安康医疗器械有限公司 Electric endoscope anastomat convenient for disassembling and replacing battery
CN112754569A (en) * 2021-01-18 2021-05-07 常州安康医疗器械有限公司 Electric endoscope anastomat with reset function
CN112754573A (en) * 2021-01-18 2021-05-07 常州安康医疗器械有限公司 Electric endoscope anastomat with standby battery
CN112754572A (en) * 2021-01-18 2021-05-07 常州安康医疗器械有限公司 Electric endoscope anastomat with battery capable of dissipating heat

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190117217A1 (en) * 2014-03-26 2019-04-25 Ethicon Llc Interface systems for use with surgical instruments
CN112754569A (en) * 2021-01-18 2021-05-07 常州安康医疗器械有限公司 Electric endoscope anastomat with reset function
CN112754573A (en) * 2021-01-18 2021-05-07 常州安康医疗器械有限公司 Electric endoscope anastomat with standby battery
CN112754572A (en) * 2021-01-18 2021-05-07 常州安康医疗器械有限公司 Electric endoscope anastomat with battery capable of dissipating heat
CN112754575A (en) * 2021-01-23 2021-05-07 常州安康医疗器械有限公司 Electric endoscope anastomat convenient for disassembling and replacing battery

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Application publication date: 20210824