CN111202553B - Manual retraction device for electric anastomat and electric anastomat thereof - Google Patents
Manual retraction device for electric anastomat and electric anastomat thereof Download PDFInfo
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- CN111202553B CN111202553B CN202010057399.2A CN202010057399A CN111202553B CN 111202553 B CN111202553 B CN 111202553B CN 202010057399 A CN202010057399 A CN 202010057399A CN 111202553 B CN111202553 B CN 111202553B
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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
- A61B17/072—Surgical 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
- A61B17/07207—Surgical 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
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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
- A61B2017/00367—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
- A61B2017/00398—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like using powered actuators, e.g. stepper motors, solenoids
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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
- A61B17/072—Surgical 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
- A61B2017/07214—Stapler heads
- A61B2017/07285—Stapler heads characterised by its cutter
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- General Health & Medical Sciences (AREA)
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- Surgical Instruments (AREA)
Abstract
The invention provides a manual backspacing device for an electric anastomat, wherein the electric anastomat comprises a motor gear and an end effector, the manual backspacing device comprises a transmission unit rack, an intermediate gear and a gear shaft, the motor gear is meshed with the transmission unit rack through the intermediate gear, the gear shaft is fixedly connected with the intermediate gear, and the intermediate gear is meshed with the transmission unit rack. Under the condition that electronic chamber mirror cutting anastomat electric reset became invalid, can break away from with intermediate gear through simple and convenient operation mode, make the motor gear in electronic backing off to can let clinician accomplish the apparatus through manually operation's mode and reset, convenient and fast, when can be quick carry out manual reset and save operation time, fall to minimum with the injury of medical accident, improved the security that electronic chamber mirror cutting anastomat used.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to an electric anastomat and a manual retraction device for the same.
Background
The electric endoscope cutting anastomat is used for suturing, cutting and separating tissues and organs in an endoscope and open operation. The backspacing mechanism of the electric endoscope cutting anastomat mostly realizes the resetting of the instrument through the motor drive and the logic control of a circuit, but under special conditions, the failure of an electronic component or a motor causes the failure of the instrument, and unpredictable and terrible results can be caused to the operation process, so that the design of a safe and reliable manual backspacing device is particularly necessary, a clinician can be allowed to complete the resetting of the instrument through a manual operation mode under the condition of the failure of the electric backspacing, and the injury of medical accidents is reduced to the minimum. In the prior art, the number of parts is large, and the retraction time is long.
Disclosure of Invention
The invention provides a manual retraction device which is used for realizing normal retraction operation of an electric anastomat under the condition that the electric anastomat is accidentally stopped or clamped so as to at least solve the technical problems of more parts and long retraction time in the prior art.
The invention provides a manual backspacing device for an electric anastomat, wherein the electric anastomat comprises a motor gear and an end effector, the manual backspacing device comprises a transmission unit rack, an intermediate gear and a gear shaft, the motor gear is meshed with the transmission unit rack through the intermediate gear, the gear shaft is fixedly connected with the intermediate gear, and the intermediate gear is meshed with the transmission unit rack.
Optionally, when the intermediate gear is driven by the movement of the gear shaft to be disengaged from the motor gear, the intermediate gear is still engaged with the rack of the transmission unit.
Optionally, the outer surface of the gear shaft is provided with a first protrusion of the gear shaft, the inner surface of the intermediate gear is provided with an intermediate gear groove, and the first protrusion of the gear shaft is connected with the intermediate gear groove in a matching manner.
Optionally, the electric stapler includes an operating handle and a bracket, the bracket is fixed in the operating handle, and the manual retraction device includes a gear spring, and the gear spring is compressed and fixed between the intermediate gear and the bracket.
Optionally, the end structure of the gear shaft is a T-shaped structure or a 7-shaped structure.
Optionally, the inner surface of the intermediate gear is a "D" shaped intermediate gear hole, the outer contour structure of the gear shaft is a "D" shaped gear shaft surface, the intermediate gear hole is matched with the gear shaft surface, and the intermediate gear and the gear shaft rotate in the same direction.
Optionally, the gear shaft is provided with a snap spring, and the gear shaft and the intermediate gear move in the same direction along the axis by matching the snap spring and the intermediate gear.
Optionally, the manual returning device includes a manual returning shaft, a manual returning shaft notch is formed in the manual returning shaft, a gear shaft second protrusion is formed in the gear shaft, and the manual returning shaft notch is matched with the gear shaft second protrusion.
Optionally, the intermediate gear is disengaged from the motor gear by moving the manual retraction shaft.
The invention also provides an electric anastomat which comprises any one of the manual retraction devices.
The invention designs a manual retraction device aiming at the condition that an electric retraction failure instrument can not be reset, and can successfully complete the instrument reset through a simple and convenient operation mode on the premise of electric failure.
The most important invention of the invention is to design a manual retraction device, under the condition that the electric reset of the electric endoscope cutting anastomat fails, a motor gear in the electric retraction can be separated from an intermediate gear through a simple and convenient operation mode, so that a clinician can complete the reset of the instrument through a manual operation mode, the operation is convenient and rapid, the manual reset can be rapidly carried out, the operation time is saved, the injury of medical accidents is reduced to the minimum, and the use safety of the electric endoscope cutting anastomat is improved.
Drawings
The above and other objects, features and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the invention are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which:
FIG. 1 is a schematic view of an alternative surgical instrument according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an alternative electric stapler including a manual retraction device according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an alternative electric stapler with automatic retraction and failure according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of an alternative electric stapler employing a manual retraction device according to an embodiment of the present invention;
FIG. 5 is a schematic view of an alternative arrangement of the intermediate gear and gear shaft engagement provided by the embodiment of the present invention;
FIG. 6-a is a schematic view of another alternative manual retraction device according to an embodiment of the present invention;
FIG. 6-b is a schematic view of an alternative configuration of an intermediate gear and gear shaft combination according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an alternative manual retraction device provided in an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a gear spring according to an embodiment of the present invention.
Reference numerals
1, a transmission unit rack 2, an intermediate gear 21, an intermediate gear groove
22, middle gear hole 3-gear shaft 32-gear shaft first projection
33-gear shaft surface 34-gear shaft second projection 4-motor gear
5-motor shaft 6-clamp spring 7-manual backspacing shaft
71-manual backspacing shaft notch 8-operating handle 9-slender body
10-end effector 11-support 12-gear spring
The following detailed description is intended to further illustrate but not limit the invention, the following example being only one preferred embodiment of the invention.
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings, in which like numerals in different drawings represent the same or similar elements, unless otherwise specified. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
Detailed Description
The principles and spirit of the present invention will be described with reference to a number of exemplary embodiments. It is understood that these embodiments are given solely for the purpose of enabling those skilled in the art to better understand and to practice the invention, and are not intended to limit the scope of the invention in any way. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Summary of The Invention
The technical problem in the prior art is that the manual backspacing device for the electric anastomat has a plurality of parts and long backspacing time, and the technical scheme of the invention cancels each complicated backspacing device in the prior art, directly borrows partial parts from a percussion transmission system, changes the connection relation of the parts, ensures the original percussion transmission function and realizes the manual backspacing function. The distinguishing characteristic 1 is: the gear shaft, the intermediate gear and the rack of the transmission unit are connected in a manner that the intermediate gear and the gear shaft are integrated or fixedly connected, and the intermediate gear is meshed with the rack of the transmission unit.
The distinguishing characteristic 2 is: in addition, a gear spring can be added and can be compressed and fixed between the gear and the bracket as shown in fig. 8, so that the gear spring in a compression state can provide radial driving force in a vertical movement direction for the intermediate gear in the firing process, the cooperation between the intermediate gear and the motor gear is ensured in the firing process, two ends of the spring are respectively fixedly connected with the gear and the bracket, and the bracket is fixed in the shell.
Exemplary devices
The following examples are shown in figures 1 to 8.
The present embodiment provides an electric stapler having a manual retracting device, which has a driving unit rack 1, an intermediate gear 2, an intermediate gear groove 21, an intermediate gear hole 22, a gear shaft 3, a gear shaft first protrusion 32, a gear shaft surface 33, a gear shaft second protrusion 34, a motor gear 4, a motor shaft 5, a snap spring 6, a manual retracting shaft 7, a manual retracting shaft notch 71, an operating handle 8, an elongated body 9, an end effector 10, a bracket 11, and a gear spring 12.
As shown in fig. 2, the electric stapler includes a motor gear 4 and an end effector 10, the manual retraction device includes a transmission unit rack 1, an intermediate gear 2 and a gear shaft 3, the motor gear 4 is engaged with the transmission unit rack 1 through the intermediate gear 2, the gear shaft 3 is fixedly connected with the intermediate gear 2, the intermediate gear 2 is engaged with the transmission unit rack 1, the end effector includes a cutting knife, and the transmission unit rack 1 is connected with the cutting knife.
Further, when the intermediate gear 2 is disengaged from the motor gear 4 by the movement of the gear shaft 3, the intermediate gear 2 is still engaged with the transmission unit rack 1.
Further, as shown in fig. 5, a first gear shaft protrusion 32 is formed on an outer surface of the gear shaft 3, an intermediate gear groove 21 is formed on an inner surface of the intermediate gear 2, and the first gear shaft protrusion 32 is engaged with the intermediate gear groove 21.
Further, as shown in fig. 8, the electric stapler includes an operating handle 8 and a bracket 11, the bracket 11 is fixed in the operating handle 8, the manual withdrawing means includes a gear spring 12, and the gear spring 12 is compressed and fixed between the intermediate gear 2 and the bracket 11.
Further, as shown in fig. 5 and 7, the end structure of the gear shaft 3 is a "T" shaped structure or a "7" shaped structure.
Further, as shown in fig. 6 b, the inner surface of the intermediate gear 2 is a "D" shaped intermediate gear hole 22, the outer contour structure of the gear shaft 3 is a "D" shaped gear shaft surface 33, the intermediate gear hole 22 is engaged with the gear shaft surface 33, and the intermediate gear 2 rotates in the same manner as the gear shaft 3.
Further, as shown in fig. 7, the gear shaft 3 is provided with a snap spring 6, and the gear shaft 3 and the intermediate gear 2 realize the same movement in the axial direction by the snap spring 6 cooperating with the intermediate gear 2.
Further, as shown in fig. 6-a, the manual retraction device includes a manual retraction shaft 7, the manual retraction shaft 7 is provided with a manual retraction shaft notch 71, the gear shaft 3 is provided with a gear shaft second protrusion 34, and the manual retraction shaft notch 71 is engaged with the gear shaft second protrusion 34.
Further, the movement of the manual retraction shaft 7 disengages the intermediate gear 2 from the motor gear 4.
Further, the basic scheme of the embodiment of the invention only comprises the following steps: the gear shaft 3, the intermediate gear 2, and the power transmission unit rack 1 are connected in such a manner that the intermediate gear 2 and the gear shaft 3 are integrally formed or fixedly connected to each other, and the intermediate gear 2 and the power transmission unit rack 1 are engaged with each other.
When the electric resetting of the electric anastomat fails, the motor gear 4 is connected with the transmission unit rack 1 through the intermediate gear 2, the transmission unit rack 1 is connected with the cutting knife in the end effector 10, the intermediate gear 2 is connected with the gear shaft 3, the two keep the same motion state, the motor shaft 5 cannot drive the motor gear 4 to rotate due to the failure of the motor or a control circuit, and the transmission unit rack 1 cannot pull back the cutting knife through external force.
At this time, the gear shaft 3 is moved along the axial direction to drive the intermediate gear 2 to move upwards and separate from the motor gear 4, but the intermediate gear 2 still meshes with the transmission unit rack 1, and because the intermediate gear 2 separates from the motor gear 4 at this time, the connection between the transmission unit rack 1 and the motor gear 4 is disconnected, so that in the manual retraction process, other rotary motion can be prevented from being transmitted to the motor shaft 5 and the transmission unit rack 1 can be mechanically retracted, the intermediate gear 2 still meshes with the transmission unit rack 1, and the intermediate gear 2 can be rotated clockwise by rotating the gear shaft 3, so that the transmission unit rack 1 moves backwards to retract the cutting knife.
Further, the sub-optimal scheme of the embodiment of the invention is as follows: on the basis of the basic scheme, the structure connection mode of the intermediate gear 2 and the gear shaft 3 comprises that the inner surface of the intermediate gear 2 is provided with at least one bulge, the matching part of the gear shaft 3 is a groove matched with the bulge, or the outer surface of the gear shaft 3 is provided with at least one bulge, and the matching part of the inner surface of the intermediate gear is a groove matched with the bulge.
Meanwhile, the connection mode of the intermediate gear 2 and the gear shaft 3 also comprises a welding mode.
The end structure of the gear shaft 3 can adopt a T-shaped structure or a 7-shaped structure to facilitate the manual operation.
Meanwhile, the tail end of the gear shaft 3 can be provided with a groove matched with the accessory tool 7, so that the gear shaft can rotate conveniently through the rotation of the accessory tool.
Further, the most preferred technical scheme of the embodiment of the invention is as follows: the intermediate gear 2 and the gear shaft 3 are connected in a way that the inner surface of the intermediate gear 2 is a D-shaped through hole, the shaft with the D-shaped outer contour of the gear shaft 3 realizes the same rotating action of the two through the matching of the D-shaped shaft hole, meanwhile, the gear shaft 3 can be assembled with at least one clamping spring piece 6, and the gear shaft 3 and the intermediate gear 2 realize the same movement along the axis direction through the matching of the clamping spring piece 6 and the intermediate gear 2; and an accessory manual retraction shaft 7 is added to realize the rotation of the gear shaft. At this time, the gear shaft has a protrusion, and the manual retraction shaft 7 has a notch 71 matching with the gear shaft second protrusion 34 of the gear shaft 3. Meanwhile, the manual backspacing shaft is provided with a T-shaped structure or a 7-shaped structure so as to facilitate the manual backspacing shaft to be rotated by a human hand.
When the electric failure of the instrument occurs, the notch 71 of the manual retraction shaft 7 is aligned with the second gear shaft protrusion 34 on the gear shaft 3, and is pressed downwards and rotated clockwise, and the second gear shaft protrusion 34 of the gear shaft 3 falls into the notch 71 of the manual retraction shaft 7. And then the manual backspacing shaft 7 is pulled upwards to separate the intermediate gear 2 from the motor gear 5, the manual backspacing shaft 7 is rotated clockwise, the rack 1 moves backwards through the transmission of the gear shaft 3 and the intermediate gear 2 to pull back the cutting knife, and the manual resetting of the electric endoscope cutting anastomat is completed.
Meanwhile, a gear spring 12 can be added, the gear spring 12 can be fixed between the intermediate gear 2 and the bracket 11 in a compressed mode as shown in fig. 8, the bracket 11 is fixed in the operating handle 8, when the instrument is in a normal firing process, the gear spring 12 is compressed, and therefore the gear spring 12 in the compressed state can provide elastic acting force to the intermediate gear 2 along the axial direction of the intermediate gear 2, and the matching of the intermediate gear 2 and the motor gear 4 is guaranteed. The axis of the gear 2 refers to the axis of the cylinder of the gear 2, i.e. the direction of the line connecting the centers of the two sides of the gear 2.
Exemplary method
The working principle is as follows:
when the electric reset of the instrument fails, the motor gear is connected with the transmission unit rack through the intermediate gear, the transmission unit rack is connected with the cutting knife in the end effector, the intermediate gear is connected with the gear shaft through the characteristics, the intermediate gear and the gear shaft are kept in the same motion state, and the motor shaft cannot drive the motor gear to rotate due to the fault of the motor or the control circuit, so that the cutting knife cannot be pulled back by the transmission unit rack through external force.
The manual backspacing device drives the intermediate gear to move upwards to be separated from the motor gear by moving the gear shaft along the axis direction, but the intermediate gear is still meshed with the rack.
The intermediate gear is still engaged with the rack. The intermediate gear can be rotated by rotating the gear shaft, so that the rack moves backwards to pull the cutting knife back.
It should be noted that although in the above detailed description several units/modules or sub-units/modules of the apparatus are mentioned, such a division is merely exemplary and not mandatory. Indeed, the features and functionality of two or more of the units/modules described above may be embodied in one unit/module according to embodiments of the invention. Conversely, the features and functions of one unit/module described above may be further divided into embodiments by a plurality of units/modules.
Moreover, while the operations of the method of the invention are depicted in the drawings in a particular order, this does not require or imply that the operations must be performed in this particular order, or that all of the illustrated operations must be performed, to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions.
While the spirit and principles of the invention have been described with reference to several particular embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, nor is the division of aspects, which is for convenience only as the features in such aspects may not be combined to benefit. The invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (7)
1. A manual retraction device for an electric stapler comprising a motor gear (4) and an end effector (10), characterized in that the manual retraction device comprises a transmission unit rack (1), an intermediate gear (2) and a gear shaft (3), the motor gear (4) is engaged with the transmission unit rack (1) through the intermediate gear (2), the gear shaft (3) is fixedly connected with the intermediate gear (2), the intermediate gear (2) is engaged with the transmission unit rack (1);
when the gear shaft (3) moves to drive the intermediate gear (2) to be separated from the motor gear (4), the intermediate gear (2) is still meshed with the transmission unit rack (1);
the gear shaft (3) is provided with a clamp spring (6), and the gear shaft (3) and the intermediate gear (2) move in the same direction along the axis by matching the clamp spring (6) with the intermediate gear (2);
the manual backspacing device comprises a manual backspacing shaft (7), a manual backspacing shaft notch (71) is arranged on the manual backspacing shaft (7), a gear shaft second bulge (34) is arranged on the gear shaft (3), and the manual backspacing shaft notch (71) is matched with the gear shaft second bulge (34);
when electronic the inefficacy of electronic anastomat, will manual back off axle breach (71) aim at gear shaft (3) gear shaft second arch (34) are impressed and are followed clockwise rotation, this moment gear shaft (3) gear shaft second arch (34) fall into in manual back off axle breach (71), then upwards stimulate manual back off axle (7), make intermediate gear (2) with motor gear (4) break away from, and along clockwise rotation manual back off axle (7), through gear shaft (3) with the transmission messenger of intermediate gear (2) drive unit rack (1) is the motion backward and is pulled back the cutting knife, accomplishes the manual reset of electronic anastomat.
2. The manual retraction device for electric stapler according to claim 1, wherein the gear shaft (3) is provided with a gear shaft first protrusion (32) at the outer surface thereof, and the intermediate gear (2) is provided with an intermediate gear groove (21) at the inner surface thereof, the gear shaft first protrusion (32) being fittingly connected with the intermediate gear groove (21).
3. Manual retraction device for an electric stapler according to claim 1, comprising an operating handle (8) and a bracket (11), said bracket (11) being fixed inside said operating handle (8), characterized in that it comprises a gear spring (12), said gear spring (12) being fixed in compression between said intermediate gear (2) and said bracket (11).
4. Manual retraction device for electric stapler according to claim 1 characterized by that the end structure of the gear shaft (3) is "T" shaped structure or "7" shaped structure.
5. The manual retraction device for electric stapler according to claim 1, wherein the inner surface of the intermediate gear (2) is a "D" shaped intermediate gear hole (22), the outer contour structure of the gear shaft (3) is a "D" shaped gear shaft surface (33), the intermediate gear hole (22) is matched with the gear shaft surface (33), and the intermediate gear (2) and the gear shaft (3) do the same rotation movement.
6. Manual retraction device for electric stapler according to claim 1 characterized by the fact that the movement of the manual retraction shaft (7) disengages the intermediate gear (2) from the motor gear (4).
7. An electric stapler characterized in that it comprises a manual retraction device according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010057399.2A CN111202553B (en) | 2020-01-17 | 2020-01-17 | Manual retraction device for electric anastomat and electric anastomat thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010057399.2A CN111202553B (en) | 2020-01-17 | 2020-01-17 | Manual retraction device for electric anastomat and electric anastomat thereof |
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| CN111202553A CN111202553A (en) | 2020-05-29 |
| CN111202553B true CN111202553B (en) | 2021-04-20 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111963639B (en) * | 2020-08-13 | 2024-04-16 | 元创医学技术(江苏)有限公司 | Emergency actuating structure of electric surgical instrument |
| CN111920471B (en) * | 2020-09-17 | 2021-08-17 | 重庆迈科唯医疗科技有限公司 | Driving mechanism, power handle and anastomat |
| CN112406979A (en) * | 2020-11-12 | 2021-02-26 | 厦门醉媚音汽车零部件有限公司 | Transfer trolley for storing automobile precision parts |
| CN112587207B (en) * | 2020-12-10 | 2022-02-15 | 广州市雪儿海蒂门诊部有限公司 | Vagina contraction and folding minimally invasive surgery operation device and control method |
| CN113855131B (en) * | 2021-11-18 | 2023-08-11 | 重庆迈科唯医疗科技有限公司 | Electric anastomat with manual reset mechanism |
| CN115462852B (en) * | 2022-09-21 | 2024-01-05 | 常州安康医疗器械有限公司 | Transmission mechanism and electric endoscope anastomat |
| WO2024109713A1 (en) * | 2022-11-23 | 2024-05-30 | 天臣国际医疗科技股份有限公司 | Reset device and surgical operation instrument |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8608045B2 (en) * | 2008-10-10 | 2013-12-17 | Ethicon Endo-Sugery, Inc. | Powered surgical cutting and stapling apparatus with manually retractable firing system |
| CN105997171B (en) * | 2016-06-08 | 2018-08-21 | 宁波维尔凯迪医疗器械有限公司 | A kind of hand-reset structure and the stapler with the structure |
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Effective date of registration: 20210702 Address after: No. 1199, xinsiping Road, Lingang New District, China (Shanghai) pilot Free Trade Zone, Pudong New Area, Shanghai, 200131 Patentee after: ENGINE MEDICAL EQUIPMENT MANUFACTURING (SHANGHAI) Corp. Address before: 901, 9 / F, building 6, courtyard 4, Shengliyuan Road, Huilongguan town, Changping District, Beijing 100096 Patentee before: Yingjia medical technology (Beijing) Co.,Ltd. |