CN115814259A - Rapid fixing and unlocking mechanism of blood pump - Google Patents
Rapid fixing and unlocking mechanism of blood pump Download PDFInfo
- Publication number
- CN115814259A CN115814259A CN202211407495.0A CN202211407495A CN115814259A CN 115814259 A CN115814259 A CN 115814259A CN 202211407495 A CN202211407495 A CN 202211407495A CN 115814259 A CN115814259 A CN 115814259A
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- Prior art keywords
- pump head
- pump
- fixing
- unlocking mechanism
- fixing ring
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- 239000008280 blood Substances 0.000 title claims abstract description 23
- 210000004369 blood Anatomy 0.000 title claims abstract description 23
- 230000007246 mechanism Effects 0.000 title claims abstract description 20
- 230000001788 irregular Effects 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000002861 ventricular Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 1
- 238000009434 installation Methods 0.000 description 4
- 230000003028 elevating effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0606—Canned motor pumps
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
- Anesthesiology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Cardiology (AREA)
- External Artificial Organs (AREA)
Abstract
The invention relates to the technical field of biomedical treatment, in particular to a rapid fixing and unlocking mechanism of a blood pump, which can be applied to the blood pump of an extracorporeal ventricle circulation auxiliary system and comprises a pump head; the rotor magnet of the pump head and the motor are mutually adsorbed; the pump head fixing ring is installed on the upper cover of the motor, and the upper cover of the motor is installed on the motor; the pump head fixing ring is provided with a height-lifting track, and the track is configured into a single-line spiral shape or a multi-line spiral shape and used for unlocking and taking out the pump head; the pump head can be gradually disengaged along the rail of the lifting height, and the suction force applied to the rotor in the pump head is gradually reduced.
Description
RELATED APPLICATIONS
The invention relates to a divisional application of a Chinese invention patent with the patent application number of 201810369854 and the invented name of a rapid locking and fixing mechanism of a blood pump.
Technical Field
The invention relates to the technical field of biomedical treatment, in particular to a blood pump quick locking and fixing structure of an extracorporeal ventricle circulation auxiliary system. Through the locking mechanism and the spiral structure that can control, the convenience problem of installation and the removal of solution.
Background
The blood pump of the extracorporeal ventricle circulation auxiliary system is composed of a pump head and a driving motor 2 part, the blood pump is a disposable consumable, and is required to be connected and fixed with the motor in use and is unlocked and taken out after use. The existing pump head mounting and unlocking scheme generally presses the edge of the pump head to perform axial fixation through elements such as a clamping groove and a protrusion on a motor, and then provides radial locking through locking screws (as shown in fig. 1), a buckle (as shown in fig. 2) and the like.
Such a fixing method has the following disadvantages: (1) the operation of screwing the screw is needed during installation, which is more complicated and time-consuming. (2) When the locking screw is fixed, the force applied by a user is different, so the locking screw is easy to loosen if the user is light, and the pump shell can be damaged if the user is heavy, which causes danger. (3) When the pump head is taken out, the rotor magnet of the pump head and the magnetic suspension magnetic coupling magnet of the motor are mutually adsorbed, so that the rigidity is higher, and the pump head can be pulled out only by exerting a larger force when being taken out.
Disclosure of Invention
In view of this, the invention aims to provide a blood pump rapid fixing and unlocking mechanism which is convenient to operate, safe, reliable and convenient to take out.
The specific technical scheme of the embodiment of the invention is as follows:
a rapid fixing and unlocking mechanism of a blood pump of an extracorporeal ventricular circulation auxiliary system comprises a pump head; the motor upper cover is provided with a pump head fixing ring and is arranged on the motor;
the pump head is provided with a flange part which is matched with the pump head fixing ring in a mounting way, the flange part is provided with a plurality of flanges for fixing, and the flange part is also provided with a plurality of clamping grooves;
the pump head fixing ring is provided with a plurality of buckles corresponding to the flanges, and the buckles realize reciprocating motion through a first elastic element; meanwhile, a height-lifting track is arranged on the pump head fixing ring and used for unlocking and taking out the pump head;
the buckle is provided with a sliding structure and an inclined plane structure;
when the pump head needs to be fixed, the flange of the pump head is aligned with the outer side of the clamping groove of the pump head fixing ring, the pump head is installed in the pump head fixing ring along the axial direction of the pump head, then the pump head is rotated for a certain angle, the flange is embedded into the clamping groove, and the pump head is fixed in the axial direction; meanwhile, the buckle is pressed and retreated by the flange on the pump head under the action of the inclined plane. When the pump head rotates to a position, the buckle resets under the action of the first elastic element, and the pump head is fixed in the circumferential direction, namely the pump head is quickly fixed;
the quick fixed and release mechanism of blood pump still includes:
the unlocking operation element is connected with the latch through a second elastic element, and an irregular surface is arranged on the latch;
when the pump head needs to be unlocked, the unlocking operation element is operated and drives the latch to move, the irregular surface of the latch enables the buckle to generate displacement, the buckle is separated from the clamping groove in the fixing ring of the pump head, the pump head is rotated, the pump head is separated from the track of the lifting height gradually, the suction force applied to a rotor in the pump head is reduced gradually, and even becomes a repulsive force, so that the rapid unlocking of the pump head is completed, and the pump head is convenient to take out.
Preferably, the number of the slots may be equal to the number of the flanges; alternatively, the number of snap grooves is greater than the number of flanges, so that the pump head 1 has a plurality of selectable outlet orientations in the fixed state.
Preferably, the motor upper cover is provided with an air exhaust structure to reduce resistance when the pump head is installed in the pump head fixing ring.
Preferably, the pump head fixing ring is provided with a single-wire spiral or multi-wire spiral track, and the pump head can be taken out easily.
Preferably, the first elastic element is a latch spring and the second elastic element is a latch spring.
Preferably, the unlocking operation element is a toggle button or a push button or a knob; the irregular surface is a guide groove or a guide rail.
Preferably, the direction of reciprocation of the catch is along the axial or radial or circumferential direction of the pump head.
Also, as an alternative modification, the irregular surface is formed not on the latch but on the buckle; or the means for elevating the height is formed on the pump head rather than on the pump head retaining ring.
The technical scheme of the invention has the following remarkable beneficial effects:
1. the pump head reduces the pulling force for vertically taking out the pump head through a spiral taking-out mode, solves the problem that the pump head needs to be pulled out forcibly when being taken out, and is convenient for a user to operate.
2. By adding an automatic locking mechanism, quick installation, locking and unlocking are realized, and the time of a user is saved; meanwhile, the operation of a user is facilitated, and the hidden troubles caused by complicated operation due to screw locking and uncontrollable locking force during manual screw tightening are avoided.
Specific embodiments of the present invention are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the invention may be employed. It should be understood that the embodiments of the invention are not so limited in scope. Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.
Drawings
The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for facilitating the understanding of the present invention, and do not specifically limit the shapes, the proportional sizes, and the like of the respective members of the present invention. Those skilled in the art, having the benefit of the teachings of this invention, may choose from the various possible shapes and proportional sizes to implement the invention as a matter of case.
FIG. 1 is a prior art locking screw installation view;
FIG. 2 is a prior art snap-fit mounting view;
FIG. 3 is an exploded view of the present invention;
FIG. 4 is a profile view of the buckle of the present invention;
FIG. 5 is a pump head profile of the present invention;
FIGS. 6a and 6b are schematic views of the pump head flange of the present invention before and after it is snap-locked;
FIG. 7 illustrates the mounting effect of the pump head and the fastener of the present invention;
FIGS. 8a and 8b are schematic views of the latch and buckle linkage of the present invention;
FIG. 9 is a graph of force analysis of the pump head of the present invention as it is unscrewed.
Description of reference numerals: 1. a pump head; 2. a pump head fixing ring; 3. an unlocking operation member; 4. a first elastic element; 5. buckling; 6. a latch; 7. a second elastic element; 8. and (4) an upper cover of the motor.
Detailed Description
The following describes in detail a specific embodiment of the present invention with reference to fig. 3 to 9:
a rapid fixing and unlocking structure of a blood pump of an extracorporeal ventricular circulation auxiliary system comprises a pump head 1; the motor upper cover 8, the pump head fixing ring is installed on the motor upper cover 8), and the motor upper cover 8 is installed on the motor;
the pump head 1 is provided with a flange part which is matched with the pump head fixing ring 2 in a mounting way, the flange part is provided with a plurality of flanges for fixing, and the flange part is also provided with a plurality of clamping grooves;
a plurality of buckles 5 are arranged on the pump head fixing ring 2 corresponding to the flanges, and the buckles 5 realize reciprocating motion through a first elastic element 4; meanwhile, a height-lifting track is arranged on the pump head fixing ring and used for unlocking and taking out the pump head 1;
the buckle 5 is provided with a sliding structure and an inclined plane structure;
when the pump head 1 needs to be fixed, the flange of the pump head 1 is aligned with the outside of the clamping groove of the pump head fixing ring 2, after the pump head 1 is installed into the pump head fixing ring 2 along the axial direction of the pump head 1, the pump head 1 is rotated by a certain angle, so that the flange is embedded into the clamping groove, and the pump head 1 is fixed in the axial direction; meanwhile, the buckle 5 is pressed and retreated by the flange on the pump head 1 under the action of the inclined plane. When the pump head 1 is rotated to the position, the buckle 5 is reset under the action of the first elastic element 4, and the pump head 1 is fixed in the circumferential direction, namely, the pump head 1 is quickly fixed;
the quick fixed and release mechanism of blood pump still includes:
the unlocking operation element 3 is connected with the latch 6 through a second elastic element 7, and an irregular surface is arranged on the latch 6;
when the pump head 1 needs to be unlocked, the unlocking operation element 3 is operated, the unlocking operation element 3 drives the latch 6 to move, the irregular surface of the latch 6 enables the buckle 5 to generate displacement and to be separated from the clamping groove in the pump head fixing ring, the pump head 1 is rotated, the pump head 1 is separated from the track of the lifting height gradually, the suction force applied to the rotor in the pump head 1 is reduced gradually, and even becomes a repulsive force, so that the pump head 1 is unlocked quickly, and the pump head 1 is taken out conveniently.
It should be noted that the number of slots may be equal to the number of flanges; alternatively, the number of snap grooves is greater than the number of flanges, so that the pump head 1 has a plurality of selectable outlet orientations in the fixed state.
An air exhaust structure is arranged on the upper motor cover 8, so that resistance when the pump head 1 is installed in the pump head fixing ring 2 is reduced.
Meanwhile, it is particularly noteworthy that the pump head fixing ring 2 is preferably provided with a single-thread spiral or multi-thread spiral track, because the attraction force of the magnet in the pump head 1 is too strong to be taken out. As shown in FIG. 9, the attraction force F1 of the magnet is downward, the force F2 of the rotary pump head 1 is horizontal, the resultant force is perpendicular to the inclined plane, F 2 ＝F 1 X Tg theta, helix angle theta < 45 deg., so F 2 ＜F 1 . After rising to a certain height, the attraction force F of the magnet 1 Greatly reduce, even reach to oneAfter the height is fixed, the magnet is changed from attraction force to repulsion force, and the pump head 1 can be easily taken out.
In other aspects, optionally, the first elastic element 4 is a latching spring and the second elastic element 7 is a latching spring; the unlocking operation element 3 is a toggle button or a push button or a knob; the irregular surface is a guide groove or a guide rail.
In addition, the direction of the reciprocating movement of the buckle 5 is along the axial direction or the radial direction or the circumferential direction of the pump head 1.
Finally, as an alternative variant, the irregular surface is not formed on the latch, but on the buckle 5; or the means for elevating is formed on the pump head 1 instead of the pump head fixing ring 2.
It should be understood that the above-described embodiments of the present invention are intended to be examples only, i.e., the spirit of the present invention is not limited to the contents of the above-described embodiments, but should include all possible equivalent modifications based on the above-described embodiments.
Claims (10)
1. A rapid fixing and unlocking mechanism of a blood pump of an extracorporeal ventricular circulation auxiliary system is characterized by comprising a pump head (1); the motor upper cover (8) is used for attracting the rotor magnet of the pump head (1) and the motor; the pump head fixing ring (2) is installed on the motor upper cover (8), and the motor upper cover is installed on the motor (9);
the pump head fixing ring (2) is provided with a height-lifting track which is configured into a single-line spiral shape or a multi-line spiral shape and used for unlocking and taking out the pump head (1);
the pump head (1) can be gradually disengaged along a track of a lifting height, and the suction force applied to a rotor in the pump head (1) is gradually reduced.
2. The rapid fixing and unlocking mechanism of a blood pump according to claim 1, wherein the motor upper cover (8) and/or the pump head fixing ring (2) is provided with an air exhaust structure to reduce resistance when the pump head (1) is installed in the pump head fixing ring (2).
3. The rapid fixing and unlocking mechanism of the blood pump according to claim 1 or 2, wherein the pump head (1) has a flange part which is matched with the pump head fixing ring (2), the flange part is provided with a plurality of flanges for fixing, and the flange part is also provided with a plurality of clamping grooves;
the pump head fixing ring (2) is provided with a plurality of buckles (5) corresponding to the flanges, and the buckles (5) realize reciprocating motion through a first elastic element (4); the buckle (5) is provided with a sliding structure and an inclined plane structure; when the pump head (1) needs to be fixed, the flange of the pump head (1) is aligned with the outer side of the clamping groove of the pump head fixing ring (2), after the pump head (1) is installed into the pump head fixing ring (2) along the axial direction of the pump head (1), the pump head (1) is rotated for a certain angle, the flange is embedded into the clamping groove, and the pump head (1) is fixed in the axial direction; meanwhile, the buckle (5) is pressed by the flange on the pump head (1) to retreat under the action of the inclined plane; when the pump head (1) rotates to a position, the buckle (5) resets under the action of the first elastic element (4), and the pump head (1) is fixed in the circumferential direction, namely, the pump head (1) is quickly fixed.
4. The rapid fixing and unlocking mechanism of a blood pump according to claim 3, characterized in that it further comprises an unlocking operating element (3) and a latch (6), said latch (6) being provided with an irregular surface; when needs are right pump head (1) is unlocked, the operation unblock operating element (3), unblock operating element (3) drive hasp (6) motion, hasp (6) irregular surface makes buckle (5) produce the displacement, and follow deviate from in the draw-in groove on the pump head solid fixed ring, will pump head (1) is rotatory, pump head (1) can break away from along the track of lifting height gradually, the suction that the rotor in pump head (1) received diminishes gradually, accomplishes promptly the quick unblock of pump head (1), conveniently takes out.
5. The blood pump quick-fixing and unlocking mechanism according to claim 4, wherein the number of the catching grooves is equal to the number of the flanges.
6. The blood pump quick fixing and unlocking mechanism according to claim 4, wherein the number of said catch grooves is greater than the number of said flanges, so that said pump head (1) has a plurality of selectable outlet orientations in the fixed state.
7. The rapid fixation and unlocking mechanism of a blood pump according to claim 4, characterized in that the direction of the reciprocating movement of the catch (5) is axial or radial or circumferential along the pump head (1).
8. The rapid fixing and unlocking mechanism of a blood pump according to claim 4, characterized in that said first elastic element (4) is a snap spring.
9. The rapid fixing and unlocking mechanism of a blood pump according to claim 4, characterized in that the unlocking operating element (3) is a toggle button or a push button or a rotary knob.
10. The blood pump quick fixing and unlocking mechanism according to claim 4, wherein the irregular surface is a guide groove or a guide rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211407495.0A CN115814259B (en) | 2018-04-24 | 2018-04-24 | Quick fixing and unlocking mechanism of blood pump |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211407495.0A CN115814259B (en) | 2018-04-24 | 2018-04-24 | Quick fixing and unlocking mechanism of blood pump |
| CN201810369895.4A CN108525038B (en) | 2018-04-24 | 2018-04-24 | Quick locking and fixing mechanism of blood pump |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810369895.4A Division CN108525038B (en) | 2018-04-24 | 2018-04-24 | Quick locking and fixing mechanism of blood pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115814259A true CN115814259A (en) | 2023-03-21 |
| CN115814259B CN115814259B (en) | 2023-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810369895.4A Active CN108525038B (en) | 2018-04-24 | 2018-04-24 | Quick locking and fixing mechanism of blood pump |
| CN202211407495.0A Active CN115814259B (en) | 2018-04-24 | 2018-04-24 | Quick fixing and unlocking mechanism of blood pump |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810369895.4A Active CN108525038B (en) | 2018-04-24 | 2018-04-24 | Quick locking and fixing mechanism of blood pump |
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| Country | Link |
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| CN (2) | CN108525038B (en) |
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| CN110306264B (en) * | 2019-07-16 | 2021-07-27 | 济宁精忠纺织有限公司 | Device convenient to high rotational speed spinning rotor free end installation is dismantled |
| CN112494804B (en) * | 2020-11-23 | 2023-09-19 | 苏州恒瑞宏远医疗科技有限公司 | Driving turntable and device suitable for magnetic driving centrifugal blood pump |
| CN112809602B (en) * | 2021-02-04 | 2022-08-09 | 江苏创源电子有限公司 | Dismounting device |
| CN113090488A (en) * | 2021-03-02 | 2021-07-09 | 四川卓滤环保技术有限公司 | Install fast and dismantle measuring pump head |
| CN112891729B (en) * | 2021-03-22 | 2025-03-18 | 湖南埃普特医疗器械有限公司 | Connection structure of micro blood pump and micro blood pump |
| CN114159693B (en) * | 2021-11-26 | 2024-11-15 | 南京汉科明德医疗科技有限公司 | Extracorporeal magnetic levitation cardiopulmonary assist device |
| CN116407703A (en) * | 2021-12-31 | 2023-07-11 | 微创外科医疗科技(上海)有限公司 | Locking and releasing mechanism and extracorporeal life support system |
| CN116764019A (en) * | 2022-03-07 | 2023-09-19 | 微创外科医疗科技(上海)有限公司 | Locking detection mechanism and extracorporeal membrane pulmonary oxygenation system |
| CN115487415B (en) * | 2022-11-17 | 2023-03-10 | 深圳汉诺医疗科技有限公司 | A new type of blood pump pump head fixing structure |
| CN116036464B (en) * | 2022-12-28 | 2023-12-01 | 心擎医疗（苏州）股份有限公司 | Magnetic suspension blood pump with pump head quick disassembly structure |
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| US4103511A (en) * | 1976-10-04 | 1978-08-01 | Firma Kress Elektrik Gmbh & Co. | Connecting arrangement for a machine tool |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN115814259B (en) | 2023-12-08 |
| CN108525038A (en) | 2018-09-14 |
| CN108525038B (en) | 2023-04-28 |
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