CN114850757A - Clamp for assembling magnetic suspension centrifugal blood pump - Google Patents
Clamp for assembling magnetic suspension centrifugal blood pump Download PDFInfo
- Publication number
- CN114850757A CN114850757A CN202210449186.3A CN202210449186A CN114850757A CN 114850757 A CN114850757 A CN 114850757A CN 202210449186 A CN202210449186 A CN 202210449186A CN 114850757 A CN114850757 A CN 114850757A
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- Prior art keywords
- positioning seat
- blood pump
- pump body
- blood
- clearance groove
- 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
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- 239000008280 blood Substances 0.000 title claims abstract description 72
- 210000004369 blood Anatomy 0.000 title claims abstract description 72
- 239000000725 suspension Substances 0.000 title claims abstract description 21
- 230000000903 blocking effect Effects 0.000 claims abstract description 6
- 238000005339 levitation Methods 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 239000007769 metal material Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 description 11
- 230000017531 blood circulation Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- 210000000709 aorta Anatomy 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 210000005242 cardiac chamber Anatomy 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 206010019280 Heart failures Diseases 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 239000002473 artificial blood Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 230000004087 circulation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000002861 ventricular Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- External Artificial Organs (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a clamp for assembling a magnetic suspension centrifugal blood pump, which comprises: the blood pump comprises a positioning seat and a locking cap, wherein the positioning seat is in an annular shape with two through ends, a positioning cavity is formed in the positioning seat, a first clearance groove and a second clearance groove are vertically formed in the side wall of the positioning seat, when a pump body and a cavity cover of the blood pump are placed in the positioning cavity, a blood inflow pipeline on the pump body penetrates through the upper end of the positioning seat and is exposed outside, a blood outflow pipeline on the cavity cover is inserted in the first clearance groove, and a cable leading-out pipeline on the pump body is inserted in the second clearance groove; the inner wall of the positioning seat surrounding the upper end of the positioning seat is provided with a limiting blocking platform, the inner wall of the positioning seat surrounding the lower end of the positioning seat is provided with internal threads, and the locking cap is in threaded connection with the lower end of the positioning seat and is matched with the limiting blocking platform for use so as to compress the pump body and the cavity cover. The clamp for assembling the magnetic suspension centrifugal blood pump greatly facilitates the assembly and debugging of the blood pump, the assembly efficiency is improved, and the assembly precision is effectively guaranteed.
Description
Technical Field
The invention relates to the technical field of assembly fixtures, in particular to a fixture for assembling a magnetic suspension centrifugal blood pump.
Background
The application of ventricular assist devices to achieve long-term circulation support has become an effective method for clinically treating patients with heart failure. The ventricle auxiliary device is divided into a blood pump in the implantation body, and particularly, a magnetic suspension centrifugal blood pump which is rapidly developed in recent years is more suitable for long-term in-vivo implantation. The magnetic suspension centrifugal blood pump generally comprises a pump body, a cavity cover, an impeller and a motor, wherein a rotor of the motor is fixed with the impeller and is arranged in the pump body, a coil of the motor is wound on the pump body to provide a rotating magnetic field for driving the impeller, a blood flow inlet is formed in the pump body and is communicated with a heart chamber through an orifice at the apex of the heart, a blood flow outlet is formed in the cavity cover and is connected with an aorta through an artificial blood vessel, and when the impeller rotates, blood is conveyed to the aorta from the heart chamber through the blood pump.
The magnetic suspension centrifugal blood pump is used as a medical instrument implanted into a human body for a long time, has extremely high requirements on the quality and the performance of the magnetic suspension centrifugal blood pump, and therefore a series of debugging needs to be carried out after the assembly is finished. At present, the existing assembly method is to firstly mount the rotor impeller into the pump body, then cover the cavity cover and the pump body, fix several point locations at the joint between the pump body and the cavity cover by spot welding or gluing to relatively fix the point locations, then assemble parts such as magnetic bearings, coils, silicon steel sheets and the like on the pump body, take the parts to a test bench to test after the assembly is finished, continuously adjust the positions of the parts to ensure that the performance of the parts meets the requirements, fix the parts, finally disassemble the pump body and the cavity cover to clean, and reassemble the pump body and the cavity cover and weld and fix the parts all around after the cleaning is finished. Therefore, the mode is not only inconvenient to operate and needs to repeatedly disassemble the pump body and the cavity cover, so that the efficiency is influenced, but also welding spots are not easy to process, and the assembly precision cannot be guaranteed.
Disclosure of Invention
In order to solve the technical problems, the invention provides the clamp for assembling the magnetic suspension centrifugal blood pump, which greatly facilitates the assembly and debugging of the blood pump and improves the assembly efficiency and precision.
The technical scheme adopted by the invention for solving the technical problem is as follows: the utility model provides a centrifugal blood pump of magnetic suspension anchor clamps for press from both sides tightly fixedly when the equipment to the pump body and the chamber lid of blood pump, wherein, be provided with blood flow inlet pipe way, cable extraction pipeline and blood flow outlet pipe way on the blood pump, blood flow inlet pipe says and vertically arranges the top of the pump body, cable extraction pipeline says along transverse arrangement on the periphery wall of the pump body, blood outflow pipeline says along transverse arrangement on the periphery wall of chamber lid. The magnetic suspension centrifugal blood pump assembly fixture comprises: the positioning seat is annular with two through ends, a positioning cavity is formed in the positioning seat, a first clearance groove and a second clearance groove are vertically formed in the side wall of the positioning seat, when the pump body and the cavity cover are placed in the positioning cavity, the blood inflow pipeline penetrates through the upper end of the positioning seat and is exposed outside, the blood outflow pipeline is inserted in the first clearance groove, and the cable leading-out pipeline is inserted in the second clearance groove; the inner wall of the positioning seat surrounding the upper end of the positioning seat is provided with a limiting blocking platform, the inner wall of the positioning seat surrounding the lower end of the positioning seat is provided with internal threads, and the locking cap is in threaded connection with the lower end of the positioning seat and is matched with the limiting blocking platform for use so as to tightly press the pump body and the cavity cover.
As a further improvement of the present invention, at least one third clearance groove is provided on the positioning seat at a junction of the pump body and the cavity cover.
As a further improvement of the invention, the first clearance groove is a groove with a top wall formed by recessing the positioning seat from bottom to top; the second clearance groove is a through groove penetrating through the upper end and the lower end of the positioning seat.
As a further improvement of the present invention, the locking cap is provided with a handle portion and a tightening portion integrally extending from a top portion of the handle portion, the tightening portion being provided with an external thread around an outer circumferential wall.
As a further improvement of the invention, a circular truncated cone is arranged at the middle position of the top of the tightening part, and the upper end surface of the circular truncated cone is a plane.
As a further improvement of the invention, the positioning seat and the locking cap are both made of metal materials.
The invention has the beneficial effects that: the invention provides a clamp for assembling a magnetic suspension centrifugal blood pump, which is provided with a positioning seat and a locking cap, wherein the positioning seat is in an annular shape with two through ends, a positioning cavity is formed in the positioning seat, a first empty avoiding groove, a second empty avoiding groove and a third empty avoiding groove are vertically formed in the side wall of the positioning seat, a pump body and a cavity cover are assembled in the positioning cavity, a blood flow outlet pipeline of the cavity cover is inserted into the first empty avoiding groove, a cable leading-out pipeline of the pump body is inserted into the second empty avoiding groove, and the locking cap is screwed at the lower end of the positioning seat through threads to tightly press the pump body and the cavity cover.
Drawings
FIG. 1 is a perspective view of a jig for assembling a magnetic suspension centrifugal blood pump according to the present invention;
FIG. 2 is a perspective view of a positioning seat in the jig for assembling the magnetic suspension centrifugal blood pump of the present invention;
FIG. 3 is a perspective view of a locking cap in the fixture for assembling the magnetic suspension centrifugal blood pump of the present invention;
fig. 4 is a perspective view of the magnetically levitated centrifugal blood pump of the present invention placed within a fixture.
The following description is made with reference to the accompanying drawings:
1. a pump body; 101. blood flows into the duct; 102. a cable exit conduit; 2. a chamber cover; 201. a blood outflow conduit; 3. positioning seats; 301. a positioning cavity; 302. a first clearance groove; 303. a second clearance groove; 304. a limiting stop table; 305. an internal thread; 306. a third clearance groove; 4. a locking cap; 401. a handle portion; 402. a tightening part; 403. a round table.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1 to 4, the invention provides a fixture for assembling a magnetic suspension centrifugal blood pump, which is used for clamping and fixing a pump body 1 and a cavity cover 2 of the magnetic suspension centrifugal blood pump during assembly.
The magnetic levitation centrifugal blood pump according to this embodiment is provided with a blood inflow pipeline 101, a cable outgoing pipeline 102, and a blood outflow pipeline 201. The blood inflow pipe 101 is coaxially arranged on the top of the pump body 1 along the vertical direction and is used for being communicated with the ventricle of the human body, and the blood flows into the blood pump through the blood inflow pipe 101. The blood outflow pipe 201 is arranged on the outer peripheral wall of the chamber cover 2 in the transverse direction for communicating with the aorta of the human body, and the blood in the blood pump flows out to the aorta of the human body through the blood outflow pipe 201. The cable outlet duct 102 is arranged transversely on the outer peripheral wall of the pump body 1 for passing cables of the blood pump out of the body.
The fixture for assembling the magnetic suspension centrifugal blood pump comprises a positioning seat 3 and a locking cap 4, wherein the positioning seat 3 is annular with two through ends, a positioning cavity 301 for placing the pump body 1 and the cavity cover 2 is formed inside the positioning seat, and the inner diameter of the positioning cavity 301 is slightly larger than the outer diameters of the pump body 1 and the cavity cover 2, so that the pump body 1 and the cavity cover 2 can be placed conveniently. Wherein, the positioning seat 3 and the locking cap 4 are made of metal materials, such as stainless steel.
Further, a first clearance groove 302 and a second clearance groove 303 are vertically arranged on the side wall of the positioning seat 3 corresponding to the positions of the blood flow outlet pipe 201 and the cable outlet pipe 102. When the pump body 1 and the cavity cover 2 are placed in the positioning cavity 301, the blood inflow pipeline 101 penetrates through the upper end of the positioning seat 3 and is exposed outside, the blood outflow pipeline 201 is inserted in the first clearance groove 302, the cable leading-out pipeline 102 is inserted in the second clearance groove 303, and then the first clearance groove 302 and the second clearance groove 303 are arranged to play a role in avoiding the blood outflow pipeline 201 and the cable leading-out pipeline 102, and meanwhile, the pump body 1 and the cavity cover 2 can be circumferentially positioned.
It should be noted that, since the cable outlet conduit 102 is located at a position close to the upper portion of the blood pump, the second clearance groove 303 is provided as a through groove penetrating through the upper and lower ends of the positioning socket 3, and thus the first clearance groove 302 is provided as a groove having a top wall formed by recessing the positioning socket 3 from bottom to top. In addition, the height of the first clearance groove 302 is higher than the connecting position of the pump body 1 and the cavity cover 2, so that the connecting position is fixed by spot welding or gluing through the first clearance groove 302.
Referring to fig. 2 to 4, the positioning socket 3 is provided with an annular limiting stop 304 around the inner wall of the upper end thereof, and an inner thread 305 around the inner wall of the lower end thereof, and the limiting stop 304 is used for limiting and stopping the pump body 1 placed in the positioning cavity 301. The locking cap 4 is provided with a handle portion 401 and a tightening portion 402 integrally extended from a top portion of the handle portion 401, the handle portion 401 and the tightening portion 402 are coaxially arranged, cross sections thereof are circular, and a diameter of the handle portion 401 is larger than that of the tightening portion 402, so that a rotating operation is performed by hand. The tightening part 402 is provided with an external thread matching the internal thread 305 around the outer circumferential wall, and the locking cap 4 is screwed on the lower end of the positioning seat 3 through the tightening part 402 and is used in cooperation with the limit stop 304 to press the pump body 1 and the cavity cover 2.
Wherein, the middle position of the top of the tightening part 402 is provided with a round table 403, and the upper end surface of the round table 403 is a plane. In the process of screwing the locking cap 4, the cavity cover 2 is pushed by the circular truncated cone 403, so that the contact area between the cavity cover and the bottom surface of the cavity cover 2 is reduced, the influence caused by machining flatness errors is reduced, and the effect of pushing the cavity cover 2 tightly is improved.
After the blood pump is assembled, debugged and cleaned, the blood pump needs to be disassembled from the fixture for circumferential sealing welding, and spot welding or gluing needs to be performed on the joint between the pump body 1 and the cavity cover 2 before disassembly in order to ensure that the pump body 1 and the cavity cover 2 are relatively kept fixed. Because when the pump body 1 and the chamber lid 2 compress tightly, there is elasticity between it to first clearance groove 302 and the position of second clearance groove 303 are closer again, if only through first clearance groove 302 and the spot welding of second clearance groove 303 or the corresponding hookup location between viscose pump body 1 and the chamber lid 2, when dismantling from anchor clamps, can lead to the opening situation to appear in pump body 1 and the unwelded or sticky opposite side bullet of chamber lid 2, and then follow-up can't guarantee the equipment precision when carrying out full-round seal welding. Therefore, at least one third clearance groove 306 is provided on the positioning socket 3 right at the junction of the pump body 1 and the cavity cover 2. Specifically, the third clearance groove 306 is formed by vertically recessing the positioning seat 3 along the top. Preferably, in this embodiment, the third clearance grooves 306 are provided with, but not limited to, two third clearance grooves 306, the first clearance groove 302 and the second clearance groove 303 are distributed around the circumference of the positioning seat 3 at a certain interval, and the joint of the pump body 1 and the cavity cover 2 is fixed by multiple spot welding or bonding through the two third clearance grooves 306, the first clearance groove 302 and the second clearance groove 303, so as to ensure that the joint is firmly fixed and cannot be bounced off.
The assembly process of this embodiment is as follows:
firstly, the pump body 1 is placed in the positioning cavity 301 from the lower end of the positioning seat 3 and is stopped on the limiting stop table 304, the blood inflow pipeline 101 penetrates out from the upper end of the positioning seat 3, and the cable leading-out pipeline 102 is positioned in the second clearance groove 303; then the rotor impeller is inserted into the pump body 1, the cavity cover 2 is placed in the positioning cavity 301 from the lower end of the positioning seat 3 and covers the bottom of the pump body 1, and the blood flow outlet pipeline 201 is positioned in the first clearance groove 302; then, the locking cap 4 is screwed at the lower end of the positioning seat 3 to a proper position until the cavity cover 2 and the pump body 1 are tightly pressed on the limiting baffle table 304; next, parts such as a magnetic bearing, a coil and a silicon steel sheet are assembled outside the blood inflow pipeline 101 of the pump body 1, after the assembly is completed and the debugging is passed, the parts on the pump body 1 are fixed, the locking cap 4 is opened, the blood pump is disassembled to clean the insides of the pump body 1 and the cavity cover 2, after the cleaning is completed, the pump body 1 and the cavity cover 2 are assembled in the clamp again, the joint of the pump body 1 and the cavity cover 2 is subjected to multi-point welding or bonding fixation through the two third clearance grooves 306, the first clearance groove 302 and the second clearance groove 303, and finally the joint of the pump body 1 and the cavity cover 2 is disassembled from the clamp to be subjected to full-circle sealing welding.
Therefore, the clamp can greatly facilitate the assembly and debugging of the blood pump, the welding spots are not required to be processed, the assembly process is optimized, the assembly efficiency is improved, and the assembly precision is guaranteed.
In the previous description, numerous specific details were set forth in order to provide a thorough understanding of the present invention. The foregoing description is only a preferred embodiment of the invention, which can be embodied in many different forms than described herein, and therefore the invention is not limited to the specific embodiments disclosed above. And that those skilled in the art may, using the methods and techniques disclosed above, make numerous possible variations and modifications to the disclosed embodiments, or modify equivalents thereof, without departing from the scope of the claimed embodiments. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the scope of the technical solution of the present invention.
Claims (6)
1. A magnetic suspension centrifugal blood pump assembling clamp is used for clamping and fixing a blood pump body (1) and a cavity cover (2) of a blood pump when assembling, wherein a blood inflow pipeline (101), a cable leading-out pipeline (102) and a blood outflow pipeline (201) are arranged on the blood pump, the blood inflow pipeline (101) is vertically arranged at the top of the pump body (1), the cable leading-out pipeline (102) is transversely arranged on the peripheral wall of the pump body (1), and the blood outflow pipeline (201) is transversely arranged on the peripheral wall of the cavity cover (2), and the magnetic suspension centrifugal blood pump assembling clamp is characterized in that:
the clamp comprises a positioning seat (3) and a locking cap (4), the positioning seat (3) is annular, two ends of the positioning seat are communicated, a positioning cavity (301) is formed in the positioning seat, a first clearance groove (302) and a second clearance groove (303) are vertically formed in the side wall of the positioning seat (3), when the pump body (1) and the cavity cover (2) are placed in the positioning cavity (301), the blood inflow pipeline (101) penetrates through the upper end of the positioning seat (3) and is exposed outside, the blood outflow pipeline (201) is inserted in the first clearance groove (302), and the cable leading-out pipeline (102) is inserted in the second clearance groove (303); the inner wall of the positioning seat (3) surrounding the upper end of the positioning seat is provided with a limiting blocking platform (304), the inner wall of the positioning seat surrounding the lower end of the positioning seat is provided with an internal thread (305), and the locking cap (4) is in threaded connection with the lower end of the positioning seat (3) and is matched with the limiting blocking platform (304) for use so as to compress the pump body (1) and the cavity cover (2).
2. The jig for assembling a magnetic levitation centrifugal blood pump as claimed in claim 1, wherein: and at least one third clearance groove (306) is arranged at the joint of the positioning seat (3) and the pump body (1) and the cavity cover (2).
3. The jig for assembling a magnetic levitation centrifugal blood pump as claimed in claim 1, wherein: the first clearance groove (302) is a groove with a top wall formed by the positioning seat (3) being recessed from bottom to top; the second clearance groove (303) is a through groove penetrating through the upper end and the lower end of the positioning seat (3).
4. The jig for assembling a magnetic levitation centrifugal blood pump as claimed in claim 1, wherein: the locking cap (4) is provided with a handle portion (401) and a tightening portion (402) integrally extending from the top of the handle portion (401), and the tightening portion (402) is provided with external threads around the outer peripheral wall.
5. The jig for assembling a magnetic levitation centrifugal blood pump as claimed in claim 4, wherein: the tightening part (402) is provided with a circular truncated cone (403) at the middle position of the top of the tightening part, and the upper end face of the circular truncated cone (403) is a plane.
6. The jig for assembling a maglev centrifugal blood pump according to claim 1, characterized in that: the positioning seat (3) and the locking cap (4) are made of metal materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210449186.3A CN114850757A (en) | 2022-04-26 | 2022-04-26 | Clamp for assembling magnetic suspension centrifugal blood pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210449186.3A CN114850757A (en) | 2022-04-26 | 2022-04-26 | Clamp for assembling magnetic suspension centrifugal blood pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114850757A true CN114850757A (en) | 2022-08-05 |
Family
ID=82633280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210449186.3A Pending CN114850757A (en) | 2022-04-26 | 2022-04-26 | Clamp for assembling magnetic suspension centrifugal blood pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN114850757A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107717543A (en) * | 2017-10-25 | 2018-02-23 | 佛山市宏石激光技术有限公司 | A kind of frock clamp |
| CN109093431A (en) * | 2018-08-20 | 2018-12-28 | 浙江维新汽车配件有限公司 | Pump housing positioning device |
| CN110900028A (en) * | 2019-12-05 | 2020-03-24 | 韶关市武江区冠启自动化设备设计有限公司 | Assembling production line for centrifugal blood pump rotor |
| CN211465162U (en) * | 2019-12-04 | 2020-09-11 | 宁波创为电子科技有限公司 | Ultrasonic welding stop gear |
| CN212145100U (en) * | 2020-02-29 | 2020-12-15 | 重庆耐德中意减振器有限责任公司 | Oil storage cylinder journal stirrup welding frock |
| CN215309682U (en) * | 2021-06-16 | 2021-12-28 | 中国医学科学院阜外医院深圳医院(深圳市孙逸仙心血管医院) | External pulsation type magnetic suspension centrifugal blood pump |
-
2022
- 2022-04-26 CN CN202210449186.3A patent/CN114850757A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107717543A (en) * | 2017-10-25 | 2018-02-23 | 佛山市宏石激光技术有限公司 | A kind of frock clamp |
| CN109093431A (en) * | 2018-08-20 | 2018-12-28 | 浙江维新汽车配件有限公司 | Pump housing positioning device |
| CN211465162U (en) * | 2019-12-04 | 2020-09-11 | 宁波创为电子科技有限公司 | Ultrasonic welding stop gear |
| CN110900028A (en) * | 2019-12-05 | 2020-03-24 | 韶关市武江区冠启自动化设备设计有限公司 | Assembling production line for centrifugal blood pump rotor |
| CN212145100U (en) * | 2020-02-29 | 2020-12-15 | 重庆耐德中意减振器有限责任公司 | Oil storage cylinder journal stirrup welding frock |
| CN215309682U (en) * | 2021-06-16 | 2021-12-28 | 中国医学科学院阜外医院深圳医院(深圳市孙逸仙心血管医院) | External pulsation type magnetic suspension centrifugal blood pump |
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