Centrifugal pump mounting and fixing device

Abstract

The utility model belongs to the technical field of medical auxiliary instruments, and particularly discloses a centrifugal pump mounting and fixing device which comprises a support base, and more than two clamping tables are arranged along the periphery of the outer side of the support base. The adapter base is provided with a concave cavity matched with the shape of the support base, a clamping groove communicated with the concave cavity is formed in the concave cavity, and the clamping groove is clamped with the clamping table after being rotated; the pressing and buckling assembly is installed on the support base, and when the pressing and buckling assembly is pressed or loosened, the pressing and buckling assembly is separated from or abuts against the inner wall of the concave cavity. According to the device disclosed by the utility model, the centrifugal pump can be quickly assembled and disassembled through simple pressing and rotating actions, so that the operation time is shortened, and the uncertainty of manual operation is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical auxiliary instrument, specifically relates to a centrifugal pump installation fixing device. BACKGROUND

[0002] In an extracorporeal ventricular assist system, a centrifugal pump works cooperatively with other devices (such as a main machine and a magnetic suspension motor) to provide temporary mechanical ventricular circulation assistance for patients who cannot be weaned from extracorporeal circulation after heart surgery. The system uses magnetic suspension technology to form a bypass by connecting blood vessels, and the impeller in the pump head is suspended and rotated by the main machine and the magnetic suspension motor, thereby pressurizing the blood and assisting the heart function to maintain blood circulation.

[0003] At present, the centrifugal pump in the extracorporeal ventricular assist device is mainly fixed by the way of bolt and nut cooperating with the installation hole. This traditional fixing method can indeed ensure the stability of the device during operation. However, in clinical practice, it is often necessary to adjust the position of the centrifugal pump according to the specific situation of the patient in order to better meet the needs of the patient. In order to achieve this adjustment, the operator needs to disassemble or reassemble the bolt and nut, which is not only tedious and time-consuming, but also may increase the uncertainty of installation due to human operation. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a centrifugal pump installation fixing device, which realizes quick assembly and disassembly of the centrifugal pump, reduces operation time, and avoids the uncertainty of human operation.

[0005] The utility model is achieved by the technical scheme, and specifically provides a centrifugal pump installation fixing device, which comprises:

[0006] The support base is provided with two or more clamping tables along the outer periphery of the support base;

[0007] The adapter base is provided with a concave cavity matched with the shape of the support base, and the concave cavity is provided with a clamping groove communicated therewith, and the clamping groove is clamped with the clamping table through rotation;

[0008] The pressing buckle assembly is installed on the support base, and when the pressing buckle assembly is pressed or released, the pressing buckle assembly is separated from or pressed against the inner wall of the concave cavity.

[0009] Preferably, the support base comprises a support top base and a support bottom base, the support top base is arranged on the support bottom base, and the support top base is provided with a plurality of clamping tables along the circumference thereof.

[0010] Preferably, the pressing buckle assembly comprises a mounting block, a pressing block and a spring, the support base is provided with a second groove, the mounting block covers the bottom of the second groove, the mounting block and the second groove form a sliding space of the pressing block, the spring is installed in the second groove, one end of the spring abuts against the inner wall of the second groove, and the other end of the spring is connected with the pressing block, and both ends of the pressing block can extend out of or retract into the sliding space.

[0011] Preferably, the end of the pressing block close to the spring is provided with a hole slot, and the spring is at least partially accommodated in the hole slot.

[0012] Preferably, the end of the clamping post inserted into the clamping groove is provided with a first guide part, and the end of the clamping groove is provided with a second guide part.

[0013] Preferably, one end of the clamping groove is provided with a limiting end.

[0014] Preferably, the ball head assembly comprises an outer shell, a ball head, a connecting rod, a ball head base and a fixing screw rod, the outer shell is provided with a cavity, the ball head base is installed in the cavity, the ball head base is provided with a first groove matched with the ball head, the ball head base is provided with a threaded hole, one end of the fixing screw rod is threadedly connected with the ball head base and connected with the surface of the ball head, one end of the connecting rod is connected with the ball head, and the other end of the connecting rod is connected with the bottom surface of the support base.

[0015] Preferably, the distance between adjacent clamping grooves is greater than the length of the clamping post.

[0016] Due to the adoption of the above technical scheme, the centrifugal pump mounting and fixing device has the following advantages:

[0017] The centrifugal pump mounting and fixing device of the utility model, setting clamping post outside support base, setting clamping groove on adapter base, clamping post and clamping groove are engaged, setting pressing buckle assembly, separating or pressing adapter base, so that adapter base cannot rotate left and right, up and down or axially relative to support base, so that centrifugal pump is fixed and installed on support base. Users only need to realize the quick assembly and disassembly of the centrifugal pump through simple pressing and rotating actions, without complex tools and cumbersome steps, reducing the operation time and the possibility of human error operation. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the utility model, the following will be briefly introduced the drawings needed to be used in the specific embodiments. In all the drawings, various elements or parts are not necessarily drawn according to the actual proportion.

[0019] Figure 1 It is a structural schematic view of the centrifugal pump mounting and fixing device of the utility model;

[0020] Figure 2 It is a structural schematic view of the adapter base;

[0021] Figure 3Structure diagram of bracket base;

[0022] Figure 4 Structure diagram of pressure buckle assembly;

[0023] Figure 5 Structure diagram of ball head assembly and pressure buckle assembly;

[0024] Figure 6 Structure diagram of ball head assembly;

[0025] Figure 7 Installation diagram of centrifugal pump installation fixing device.

[0026] Reference signs:

[0027] 1-bracket base, 11-clamping table, 111-first guide part, 12-bracket top base, 13-bracket bottom base, 14-second groove, 15-opening;

[0028] 2-adaptor base, 21-cavity, 22-clamping groove, 221-second guide part, 222-limiting end;

[0029] 3-pressure buckle assembly, 31-mounting block, 32-pressing block, 321-limiting table, 322-pressing end, 323-hole groove, 33-spring, 34-sliding space;

[0030] 4-ball head assembly, 41-outer shell, 411-cavity, 42-ball head, 43-connecting rod, 44-ball head seat, 441-first groove, 45-fixing screw;

[0031] 5-centrifugal pump. DETAILED DESCRIPTION

[0032] The embodiments of the technical scheme of the utility model will be described in detail below with reference to the drawings.

[0033] Please refer to Figure 1 , Figure 2 and Figure 3 and Figure 7 , a centrifugal pump installation fixing device, comprising: bracket base 1, adaptor base 2 and pressure buckle assembly 3.

[0034] Two or more clamping tables 11 are arranged along the outer periphery of the support base 1; the adapter base 2 is provided with a cavity 21 matched with the shape of the support base 1, and the cavity 21 is provided with a clamping groove 22 communicated therewith, the clamping groove 22 is clamped with the matched clamping table 11 after rotation; the pressing buckle assembly 3 is installed on the support base 1, when the pressing buckle assembly 3 is pressed or released, the pressing buckle assembly 3 is separated from or pressed against the inner wall of the cavity 21. Specifically, the shape of the cavity 21 is matched with the support base 1, so that the adapter base 2 is stably placed on the support base 1, and can be clamped with the support base 1 after a certain angle of rotation. The adapter base 2 is installed at the bottom of the housing of the centrifugal pump 5, or the adapter base 2 is integrally formed with the housing of the centrifugal pump 5. Preferably, installation and rotation marks are arranged at eye-catching positions on the outer sides of the adapter base 2 and the support base 1, the number of clamping tables 11 is four, and they are uniformly and circumferentially arranged on the outer side of the support base 1, and correspondingly, the number of clamping grooves 22 is also four.

[0035] When the centrifugal pump mounting and fixing device is used, during assembly, the pressing buckle assembly 3 is first pressed, the pressing of the pressing buckle assembly 3 does not affect the installation of the adapter base 2, the adapter base 2 is placed on the support base 1 according to the installation marks, then the centrifugal pump 5 is rotated by a certain angle according to the marks, the clamping table 11 is clamped with the corresponding clamping groove 22, at this time, the adapter base 2 cannot move left and right or up and down relative to the support base 1. After clamping, the pressing buckle assembly 3 is released, the pressing buckle assembly 3 is pressed against the inner wall of the cavity 21, at this time, the adapter base 2 cannot rotate relative to the support base 1, so that the adapter base 2 is fixedly installed on the support base 1. When the centrifugal pump 5 needs to be disassembled from the support base 1, the pressing buckle assembly 3 is first pressed, the pressing buckle assembly 3 is separated from the inner wall of the cavity 21, the centrifugal pump 5 is rotated, the clamping table 11 is separated from the clamping groove 22, and then the centrifugal pump 5 can be removed. The centrifugal pump mounting and fixing device adopts a rotating clamping and pressing method, and a user only needs to press and rotate to realize the quick assembly and disassembly of the centrifugal pump, compared with the fixing method of the centrifugal pump 5 by bolts and nuts, the device does not need complex tools and cumbersome steps, significantly simplifies the disassembly process of the centrifugal pump 5, reduces the operation time and the possibility of human error, and is easy to operate. The clamping structure and the pressing buckle assembly 3 limit the up-down, left-right and axial rotation movement of the centrifugal pump 5, have higher fixing stability, and thus improve the operation efficiency and use convenience of the device.

[0036] Please refer to Figure 2 and Figure 3Further, the support base 1 comprises a support top base 12 and a support bottom base 13, the support top base 12 is arranged on the support bottom base 13, and the support top base 12 is provided with a plurality of clamping tables 11 along the circumference thereof. Specifically, the support top base 12 and the support bottom base 13 are both disc-shaped and integrally formed. The shape of the concave cavity 21 is matched with the support top base 12, and after the support base 1 is installed with the adapter base 2, the support top base 12 is arranged in the concave cavity 21, and the lower surface of the adapter base 2 is in contact with the upper surface of the support bottom base 13. With this structure, the support base 1 and the adapter base 2 are stably assembled together.

[0037] Please refer to Figure 4 and Figure 5 Further, the pressing buckle assembly 3 comprises a mounting block 31, a pressing block 32 and a spring 33, the support base 1 is provided with a second groove 14, the mounting block 31 covers the bottom of the second groove 14, the mounting block 31 and the second groove 14 form a sliding space 34 of the pressing block 32, the spring 33 is installed in the second groove 14, one end of the spring 33 is in abutment with the inner wall of the second groove 14, and the other end is connected with the pressing block 32, and both ends of the pressing block 32 can extend out of or retract into the sliding space 34. Specifically, the second groove 14 is arranged in the support top base 12 and the support bottom base 13, the mounting block 31 is fixedly installed on the bottom surface of the support bottom base 13 by screws, and the pressing block 32 moves along the mounting block 31. The pressing block 32 is provided with a limiting table 321 and a pressing end 322, and the side surface of the support top base 12 is provided with an opening 15 for the extension and retraction of the limiting table 321. In use, the pressing end 322 is pressed, the pressing block 32 slides into the sliding space 34, the limiting table 321 retracts into the second groove 14, at this time, the limiting table 321 is not exposed on the side surface of the support top base 12, avoiding the interference of the limiting table 321 with the placement of the support base 1 on the adapter base 2, and at the same time, the spring 33 is retracted, when the support base 1 is placed on the adapter base 2, the pressing block 32 is released, and by the action force of the spring 33, the limiting table 321 restores to the original position and is exposed on the opening 15 until it is in abutment with the inner wall of the concave cavity 21, a friction force is generated by the abutment, and the axial rotation of the adapter base 2 and the support base 1 is limited.

[0038] Please refer to Figure 4 Further, the end of the pressing block 32 close to the spring 33 is provided with a hole slot 323, and the spring 33 is at least partially accommodated in the hole slot 323. With this structure, the extension and retraction direction of the spring 33 is along the axial direction of the hole slot 323, the deformation direction of the extension and retraction of the spring 33 is limited, and the extension and retraction of the spring 33 will not deviate.

[0039] Please refer to Figure 2 and Figure 3Further, the end of the card slot 22 is provided with a first guide part 111, and the end of the card slot 22 is provided with a second guide part 221. With this structure, the card slot 22 is conveniently clamped in the card slot 22. Preferably, one end of the card slot 22 is provided with a limiting end 222, so that when rotating and clamping, it is clear whether the clamping is in place or not, and rotation out of position is prevented.

[0040] Please refer to Figure 5 and Figure 6 Further, the ball head assembly 4 comprises a shell 41, a ball head 42, a connecting rod 43, a ball head seat 44 and a fixing screw 45; the shell 41 is provided with a cavity 411, the ball head seat 44 is installed in the cavity 411, the ball head seat 44 is provided with a first recess 441, one end of the outer surface of the ball head 42 abuts against the inner wall of the cavity 411, and the other end abuts against the inner wall of the first recess 441; the ball head seat 44 is provided with a threaded hole, one end of the fixing screw 45 is threadedly connected with the ball head seat 44 and connected with the surface of the ball head 42, one end of the connecting rod 43 is connected with the surface of the ball head 42, and the other end is connected with the bottom surface of the support base 1. In use, the fixing screw 45 is loosened, the ball head seat 44 and the ball head 42 are driven to move downward, the outer surface of the ball head 42 is separated from the inner wall of the shell 41, at this time, the support base 1 can be rotated at any angle, and the centrifugal pump 5 can be adjusted in angle according to the actual application scene to be suitable for the operation of patients or medical personnel. After adjusting the angle, the fixing screw 45 is tightened, the outer surface of the ball head 42 is in close contact with the inner wall of the shell 41 to generate damping, so as to fix the position of the centrifugal pump 5.

[0041] Further, the distance between adjacent card slots 22 is greater than the length of the card slot 22, so that during assembly, no interference is caused.

[0042] The centrifugal pump mounting and fixing device of the utility model, the card slot 22 is arranged on the adapter base 2, the card slot 22 is clamped with the card slot 22 to limit the adapter base 2 from moving left and right or up and down relative to the support base 1. The pressure buckle assembly 3 is arranged, so that the adapter base 2 cannot rotate relative to the support base 1, so that the centrifugal pump 5 is fixedly mounted on the support base 1. By adopting the rotating buckle and the pressure connection mode, the user only needs to press and rotate to realize the quick assembly and disassembly of the centrifugal pump, without the need for complex tools and cumbersome steps, reducing the operation time and human operation errors. The card slot 11 is provided with a first guide part 111, the card slot 22 is provided with a second guide part 221 and a limiting end 223, the card slot 11 is conveniently clamped in the card slot 22, and it is clear whether the rotating clamping is in place or not. The ball head assembly 4 is arranged, the support base 1 can be rotated at any angle, the centrifugal pump 5 can be adjusted in angle according to the actual application scene to be suitable for the operation of patients or medical personnel, and the application scene is improved.

[0043] The above-described specific embodiments have further detailed the purposes, technical solutions and beneficial effects of the present application, and it should be understood that the above-described embodiments are merely specific implementation methods of the present application and are not intended to limit the present application, and any modifications, equivalent replacements and improvements, etc. made within the spirit of the present application shall be included in the protection scope of the present application.

Claims

1. A centrifugal pump mounting fixture, characterized by, The utility model relates to a support base (1) is provided with two or more than two clamping tables (11) along the outer side periphery of the support base (1), an adapter base (2) is provided with a concave cavity (21) matched with the shape of the support base (1), the concave cavity (21) is provided with a clamping groove (22) communicated with it, the clamping groove (22) is matched with the clamping table (11) through rotation and clamping, and a pressing buckle assembly (3) is installed on the support base (1), when the pressing buckle assembly (3) is pressed or loosened, the pressing buckle assembly (3) is separated or pressed against the inner wall of the concave cavity (21). The support base (1) comprises a support top base (12) and a support bottom base (13), the support top base (12) is arranged on the support bottom base (13), and the support top base (12) is provided with a plurality of clamping tables (11) along the circumferential direction thereof. The pressing buckle assembly (3) comprises a mounting block (31), a pressing block (32) and a spring (33), the support base (1) is provided with a second groove (14), the mounting block (31) covers the bottom of the second groove (14), the mounting block (31) and the second groove (14) form a sliding space (34) of the pressing block (32), the spring (33) is installed in the second groove (14), one end of the spring (33) abuts against the inner wall of the second groove (14), the other end of the spring (33) is connected with the pressing block (32), and both ends of the pressing block (32) can extend out of or retract into the sliding space (34). The end of the pressing block (32) close to the spring (33) is provided with a hole groove (323), and the spring (33) is at least partially accommodated in the hole groove (323).

2. The centrifugal pump mounting fixture of claim 1, wherein, The end of the clamping table (11) inserted into the clamping groove (22) is provided with a first guide part (111), and one end of the clamping groove (22) is provided with a second guide part (221).

3. The centrifugal pump mounting fixture of claim 1 or 2, wherein One end of the clamping groove (22) is provided with a limiting end (222).

4. The centrifugal pump mounting fixture of claim 3, wherein, One end of the clamping groove (22) is provided with a limiting end (222).

5. The centrifugal pump mounting fixture of claim 1, 2, or 4, wherein, The utility model further comprises a ball head assembly (4), the ball head assembly (4) comprises a shell (41), a ball head (42), a connecting rod (43), a ball head seat (44) and a fixing screw rod (45), the shell (41) is provided with a cavity (411), the ball head seat (44) is installed in the cavity (411), the ball head seat (44) is provided with a first groove (441), one end of the outer side surface of the ball head (42) abuts against the inner wall of the cavity (411), and the other end abuts against the inner wall of the first groove (441); the ball head seat (44) is provided with a threaded hole, one end of the fixing screw rod (45) is connected with the ball head seat (44) in a threaded mode and is connected with the surface of the ball head (42), one end of the connecting rod (43) is connected with the surface of the ball head (42), and the other end is connected with the bottom surface of the support base (1).

6. The centrifugal pump mounting fixture of claim 1, 2, or 4, wherein, The distance between adjacent clamping grooves (22) is greater than the length of the clamping table (11).

7. The centrifugal pump mounting fixture of claim 3, wherein ​ 8. The centrifugal pump mounting fixture of claim 1, 2, 4 or 7, wherein, ​ 9. The centrifugal pump mounting fixture of claim 1, 2, 4 or 7, wherein, ​

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