CN108498887B - Unlocking and retaining mechanism of blood pump - Google Patents
Unlocking and retaining mechanism of blood pump Download PDFInfo
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- CN108498887B CN108498887B CN201810369932.1A CN201810369932A CN108498887B CN 108498887 B CN108498887 B CN 108498887B CN 201810369932 A CN201810369932 A CN 201810369932A CN 108498887 B CN108498887 B CN 108498887B
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- latch
- lock bolt
- pump head
- buckle
- locking element
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- 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
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- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Mechanical Engineering (AREA)
- Anesthesiology (AREA)
- Cardiology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- External Artificial Organs (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention relates to the technical field of biomedical science, and belongs to an unlocking and retaining mechanism of a blood pump. When not installed, the latch locking element (12) is in the sprung position, and the unlocking operation element (3) is not operated; when secured, the pump head (1) is mounted to depress the latch locking member (12) to interlock with the latch catch (10). When unlocking, the unlocking operation element (3) is operated to drive the lock bolt (6) and the lock bolt buckle (10) to move circumferentially synchronously, the lock bolt locking element (12) presses the lock bolt buckle (10) back through the inclined plane, so that the lock bolt buckle is reset under the action of the third elastic element (11) and clamped into the clamping groove on the lock bolt locking element (12), after the pump head (1) is taken out, the lock bolt locking element (12) is reset under the action of the fourth elastic element (13), the lock bolt buckle (10) is separated from the clamping groove, and the lock bolt (6) is unlocked and reset together with the unlocking operation element (3) under the action of the second elastic body (7).
Description
Technical Field
The invention relates to the technical field of biomedical science, in particular to a blood pump rapid locking and fixing structure of an extracorporeal ventricular cycle auxiliary system. Through locking mechanism and spiral structure that can control, the installation of solution and the convenience problem of taking out.
Background
The blood pump of the extracorporeal ventricle circulation auxiliary system consists of a pump head and a driving motor 2, is disposable consumable, needs to be connected and fixed with the motor in use, and is unlocked and taken out after use. In the existing pump head installation and unlocking scheme, the edge of the pump head is pressed by a clamping groove, a bulge and other elements on the motor to be axially fixed, and then radial locking is provided by means of locking screws (shown in figure 1), buckles (shown in figure 2) and the like.
Such a fixing method has the following drawbacks: (1) the operation of screwing the screw is needed during installation, and the operation is complicated and time-consuming. (2) When the pump head is taken out, the mechanism of the buckle needs to keep the buckle at the unlocking position by one hand, and the pump head is taken out by the other hand, so that the operation by one hand is inconvenient.
Disclosure of Invention
Therefore, the invention aims to provide the quick fixing and unlocking mechanism for the blood pump, which is convenient to operate, safe, reliable and convenient to take out.
Specifically, the above object of the present invention is achieved by the following technical solutions:
an unlocking element retaining mechanism of an extracorporeal ventricular cycle auxiliary system blood pump is characterized in that: the pump head comprises a pump head fixing ring, a motor upper cover, an unlocking operation element, a latch, a second elastic element, a latch buckle, a third elastic element, a latch locking element and a fourth elastic element;
the unlocking operation element is fixed with the lock latch, is arranged in the pump head fixing ring, and realizes reciprocating motion in the pump head fixing ring through the second elastic element;
the latch buckle is arranged on the latch and realizes reciprocating motion through a third elastic element, and the latch buckle is provided with an inclined plane structure;
the latch locking element is arranged in the motor upper cover, and realizes reciprocating motion in the motor upper cover through a fourth elastic element, and the latch locking element is provided with a clamping groove structure for fixing a latch buckle;
when the pump head is not installed, the latch locking element is in a sprung position, and when a user operates the unlocking operation element to the unlocking position, the latch buckle is not contacted with the latch locking element and cannot be locked with the latch locking element, so that after a hand is released, the unlocking operation element is reset under the action of the second elastic body;
when the pump head is required to be fixed, after the pump head is axially installed in place, the latch locking element is pressed down to a locking position by the pump head;
when the pump head is required to be unlocked, the unlocking operation element is operated, the unlocking operation element drives the lock bolt to move, the lock bolt buckle moves along the circumferential direction along with the lock bolt synchronously, the lock bolt buckle is pressed down to retreat under the action of the inclined plane of the lock bolt buckle, after the unlocking operation element rotates in place, the lock bolt buckle resets under the action of the third elastic element, the lock bolt buckle is clamped into a clamping groove structure on the lock bolt locking element, at the moment, the unlocking operation element is fixed at the unlocking position and is not moved, then the pump head is rotated, the lock bolt locking element is not pressed down by the pump head, the lock bolt locking element resets under the action of the fourth elastic element, the lock bolt buckle is separated from the clamping groove structure on the lock bolt locking element, then the lock bolt is unlocked, the lock bolt resets under the action of the second elastic body, and the unlocking operation element fixed together is driven to reset.
Preferably, the second elastic element is a latch spring, the third elastic element is a latch snap spring, and the fourth elastic element is a latch locking element spring.
Preferably, the direction of reciprocation of the latch catch is along the axial or radial or circumferential direction of the pump head.
Preferably, the direction of reciprocation of the latch locking element is along the axial or radial or circumferential direction of the pump head.
Also, as an alternative variation, the ramp structure is not formed on the latch catch, but on the latch locking member, or both.
Compared with the prior art, the invention has the following beneficial effects:
1. by adding the unlocking retaining mechanism, the unlocking element can be kept at the unlocking position in the unlocking process, a user does not need to manually keep the unlocking element in the unlocking process any more, and the pump head can be taken out by vacating hands, so that the operation can be completed by one hand, and convenience is brought to the user;
2. the unlocking and holding mechanism is automatically operated, is automatically held during unlocking, is automatically reset after being taken out, does not need additional operation, does not increase operation steps of a user, and saves the time of the user.
Drawings
FIG. 1 is a prior art lock screw installation view;
FIG. 2 is a prior art snap-fit installation view;
FIG. 3 is an exploded view of the present invention;
FIG. 4 is a snap profile view of the present invention;
FIG. 5 is a pump head outline view of the present invention;
FIG. 6 is a diagram of the pump head and motor assembly of the present invention;
fig. 7, 8, 9 are schematic views of the unlock holding mechanism of the present invention before installation, after installation, and during unlocking.
Reference numerals illustrate: 1, a pump head; 2, a pump head fixing ring; 3, unlocking the operation element; 4, a first elastic element; 5, buckling; 6, locking a latch; 7, a second elastic element; 8, a motor upper cover; 9, a motor; 10, a latch buckle; 11, a third elastic element; a latch locking member; 13, a fourth elastic element.
Examples
The following describes embodiments of the present invention in detail with reference to fig. 2-3:
an unlocking element retaining mechanism of an extracorporeal ventricular cycle auxiliary system blood pump is characterized in that: the pump head comprises a pump head (1), a pump head fixing ring (2), an unlocking operation element (3), a latch (6), a second elastic element (7), a motor upper cover (8), a latch buckle (10), a third elastic element (11), a latch locking element (12) and a fourth elastic element (13);
the latch buckle (10) is arranged on the latch (6), and the latch buckle (10) is provided with an inclined plane structure through the reciprocating motion of the third elastic element (11);
the latch locking element (12) realizes reciprocating motion through a fourth elastic element (13), and the latch locking element (12) is provided with a clamping groove structure for fixing the latch buckle (10);
when the pump head (1) is not installed, the latch locking element (12) is in a sprung position, and when a user operates the unlocking operation element (3) to the unlocking position, the latch buckle (10) is not contacted with the latch locking element (12) and cannot be locked with the latch locking element (12), so that after the hand is released, the unlocking operation element (3) is reset under the action of the second elastic body (7);
when the pump head (1) needs to be fixed, the lock latch locking element (12) is pressed down by the pump head (1) after the pump head (1) is axially mounted in place, and in this position the lock latch locking element (12) can be interlocked with the lock latch buckle (10).
When the pump head (1) needs to be unlocked, the unlocking operation element (3) is operated, the unlocking operation element (3) drives the lock bolt (6) to move, the lock bolt buckle (10) moves along the circumferential direction along with the lock bolt (6) synchronously, under the action of the inclined plane of the lock bolt buckle (10), the lock bolt buckle (12) is pressed down to retreat, after the unlocking operation element (3) rotates in place, the lock bolt buckle (10) resets under the action of the third elastic element (11) and is clamped into a clamping groove structure on the lock bolt locking element (12), at the moment, the unlocking operation element (3) is fixed at the unlocking position, then the lock bolt locking element (12) is not pressed down by the pump head (1) any more, the lock bolt buckle (10) is separated from the clamping groove structure on the lock bolt locking element (12) under the action of the fourth elastic element (13), and then the lock bolt (6) is unlocked, and the lock bolt (6) is driven to reset under the action of the second elastic body (7) to be fixed together, and the lock bolt locking element (12) is reset together.
In addition, the direction of the reciprocating movement of the latch buckle (10) is along the axial direction or the radial direction or the circumferential direction of the pump head (1).
In addition, the direction of the reciprocating movement of the latch locking element (12) is along the axial direction or radial direction or circumferential direction of the pump head (1).
Finally, as an alternative variant, the ramp structure of the clasp (10) may be present on the latch locking element (12) or on both.
It should be understood that the above-described embodiments of the present invention are by way of example only, i.e., the spirit of the present invention is not limited to what has been described in the above-described embodiments, but is intended to include all possible equivalent variations based on the above-described embodiments.
Claims (5)
1. An unlocking and retaining mechanism of a blood pump of an extracorporeal ventricular cycle auxiliary system, wherein a pump head of the blood pump is detachably arranged on an upper cover of a motor; the method is characterized in that: the unlocking and retaining mechanism of the blood pump comprises: a pump head fixing ring (2), an unlocking operation member (3), a latch (6), a second elastic member (7), a latch buckle (10), a third elastic member (11), a latch locking member (12) and a fourth elastic member (13);
the latch buckle (10) is arranged on the latch (6), and the latch buckle (10) is provided with an inclined plane structure through the reciprocating motion of the third elastic element (11);
the latch locking element (12) realizes reciprocating motion through a fourth elastic element (13), and the latch locking element (12) is provided with a clamping groove structure for fixing the latch buckle (10);
when the pump head (1) is not installed, the latch locking element (12) is in a sprung position, and when a user operates the unlocking operation element (3) to the unlocking position, the latch buckle (10) is not contacted with the latch locking element (12) and cannot be locked with the latch locking element (12), so that after a hand is released, the unlocking operation element (3) is reset under the action of the second elastic element (7);
when the pump head (1) needs to be fixed, after the pump head (1) is axially mounted on the motor upper cover (8), the latch locking element (12) is pressed down to a locking position by the pump head (1);
when the pump head (1) needs to be unlocked, the unlocking operation element (3) is operated, the unlocking operation element (3) drives the lock bolt (6) to move, the lock bolt buckle (10) moves along the circumferential direction along with the lock bolt (6) synchronously, the lock bolt buckle (10) is pressed by the lock bolt locking element (12) to retreat under the action of the inclined plane of the lock bolt buckle (10), after the unlocking operation element (3) rotates in place, the lock bolt buckle (10) resets under the action of the third elastic element (11) and is clamped into a clamping groove structure on the lock bolt locking element (12), at the moment, the unlocking operation element (3) is fixed at an unlocking position, then the lock bolt locking element (12) is not pressed down by the pump head (1) any more when the pump head (1) rotates and is taken out, the lock bolt locking element (12) is reset under the action of the fourth elastic element (13), the lock bolt buckle (10) is separated from the clamping groove structure on the lock bolt locking element (12), and then the lock bolt (6) is reset under the action of the second elastic element (7), and the lock bolt locking elements are reset together, and the lock are operated;
-the direction of the reciprocating movement of the latch catch (10) is along the radial direction of the pump head (1);
the second elastic element (7) is a latch spring.
2. An unlock-and-hold mechanism for an extracorporeal ventricular cycle assist system blood pump according to claim 1, wherein the direction of said reciprocating movement of said latch locking element (12) is along the axial direction of said pump head (1).
3. An unlock-and-hold mechanism for an extracorporeal ventricular cycle assist system blood pump according to claim 1, wherein said latch catch (10) is alternatively provided on only the latch locking element (12) and not on said latch catch (10).
4. An unlock-and-hold mechanism for an extracorporeal ventricular cycle assist system blood pump according to claim 1 wherein said latch locking member (12) is further provided with a ramp structure.
5. An unlock-and-hold mechanism for an extracorporeal ventricular cycle assist system blood pump according to claim 1 wherein the third elastic member (11) is a latch snap dome and the fourth elastic member (13) is a latch lock member spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810369932.1A CN108498887B (en) | 2018-04-24 | 2018-04-24 | Unlocking and retaining mechanism of blood pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810369932.1A CN108498887B (en) | 2018-04-24 | 2018-04-24 | Unlocking and retaining mechanism of blood pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108498887A CN108498887A (en) | 2018-09-07 |
| CN108498887B true CN108498887B (en) | 2023-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810369932.1A Active CN108498887B (en) | 2018-04-24 | 2018-04-24 | Unlocking and retaining mechanism of blood pump |
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| Country | Link |
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| CN (1) | CN108498887B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112791305A (en) * | 2021-01-22 | 2021-05-14 | 苏州心擎医疗技术有限公司 | Blood pump and power transmission assembly thereof |
| WO2023283751A1 (en) * | 2021-07-12 | 2023-01-19 | 苏州心擎医疗技术有限公司 | Device for assisting heart in event of heart failure |
| CN115487415B (en) * | 2022-11-17 | 2023-03-10 | 深圳汉诺医疗科技有限公司 | Novel blood pump head fixed knot constructs |
| CN115531649B (en) * | 2022-12-01 | 2023-03-07 | 深圳汉诺医疗科技有限公司 | External membrane lung oxygenation pump head fixing device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6045340A (en) * | 1997-10-10 | 2000-04-04 | Rule Industries, Inc. | Locking mechanism for a removable live well pump |
| CN1306598A (en) * | 1998-06-25 | 2001-08-01 | 胡夫休尔斯贝克及福尔斯特公司 | Closure, especially for vehicles |
| JP2004118901A (en) * | 2002-09-25 | 2004-04-15 | Hitachi Ltd | Magnetic disk unit |
| KR20130012694A (en) * | 2011-07-26 | 2013-02-05 | 주식회사 삼송 | Retractor and seat belt therewith |
| CN103080557A (en) * | 2011-02-10 | 2013-05-01 | 三菱重工业株式会社 | Pump configuration |
| CN105264157A (en) * | 2013-06-05 | 2016-01-20 | 株式会社利富高韩国 | Button latch device of dual door type inner door |
| CN205162697U (en) * | 2015-10-23 | 2016-04-20 | 九阳股份有限公司 | Juice extractor of easy dismouting |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB608121A (en) * | 1946-03-12 | 1948-09-09 | Self Priming Pump & Eng Co Ltd | Improvements in or relating to motor-driven pumps for liquids |
| TW557085U (en) * | 2002-12-13 | 2003-10-01 | Hon Hai Prec Ind Co Ltd | Fan frame assembly |
-
2018
- 2018-04-24 CN CN201810369932.1A patent/CN108498887B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6045340A (en) * | 1997-10-10 | 2000-04-04 | Rule Industries, Inc. | Locking mechanism for a removable live well pump |
| CN1306598A (en) * | 1998-06-25 | 2001-08-01 | 胡夫休尔斯贝克及福尔斯特公司 | Closure, especially for vehicles |
| JP2004118901A (en) * | 2002-09-25 | 2004-04-15 | Hitachi Ltd | Magnetic disk unit |
| CN103080557A (en) * | 2011-02-10 | 2013-05-01 | 三菱重工业株式会社 | Pump configuration |
| KR20130012694A (en) * | 2011-07-26 | 2013-02-05 | 주식회사 삼송 | Retractor and seat belt therewith |
| CN105264157A (en) * | 2013-06-05 | 2016-01-20 | 株式会社利富高韩国 | Button latch device of dual door type inner door |
| CN205162697U (en) * | 2015-10-23 | 2016-04-20 | 九阳股份有限公司 | Juice extractor of easy dismouting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108498887A (en) | 2018-09-07 |
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Address after: Room 801, 802, 803 and 804, Building 7, No. 188 Fuchunjiang Road, High-tech Zone, Suzhou, Jiangsu, 215000 Patentee after: Xinqing Medical (Suzhou) Co.,Ltd. Address before: 215163, 1st Floor, Building 13, 101park13, No. 158 Jinfeng Road, Science and Technology City, High tech Zone, Suzhou City, Jiangsu Province Patentee before: SUZHOU XINQING MEDICAL TECHNOLOGY Co.,Ltd. |
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