Cardiovascular research experiment device

Abstract

The utility model discloses a cardiovascular research experiment device, which belongs to the technical field of cardiovascular research, and adopts the technical scheme that the cardiovascular research experiment device comprises an experiment table, a first mounting rack and a second mounting rack are respectively arranged on the front side and the rear side of the top of the experiment table, and six mounting mechanisms are respectively arranged on the opposite sides of the first mounting rack and the second mounting rack; a support is arranged between the opposite sides of the first mounting frame and the second mounting frame, and the problems that an existing cardiovascular research experiment device is usually carried out in a static simulated blood vessel cavity, a blood vessel support is in a dynamic physiological environment in the body, and in practical application, the blood vessel support is not prone to being damaged are solved. In the prior art, blood vessels continuously deform and displace along with the pulsation of the heart, the movement of the body and the like, the intravascular stent is subjected to the action of forces in different directions and with different magnitudes, and the static test cannot completely simulate the dynamic stress condition, so that the assessment of the anti-fatigue performance of the intravascular stent is not accurate enough, and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of cardiovascular research, in particular to a cardiovascular research experimental device. Background Art

[0002] The cardiovascular research experimental device simulates the pulsating environment inside human blood vessels to test the fatigue resistance of vascular stents to evaluate their reliability and durability under long-term cyclic loads.

[0003] The existing problems are: 1. The auxiliary needle used for ligating the abdominal aorta is difficult to place and fix before ligation, and often requires an assistant to help hold it. If done alone, the auxiliary needle may deviate during the ligation process, affecting the ligation effect and possibly causing damage to surrounding tissues by the needle; 2. The placed auxiliary needle needs to be withdrawn after ligation, and this operation requires a certain amount of space in the abdominal cavity. The auxiliary needle cannot be too long, but if it is too short, it will be difficult to place before ligation; 3. There is currently no unified specification of ligation auxiliary needles. Most of them are modified from clinical injection needles of different calibers based on literature reports. Different experimental animals (such as mice, rats or rabbits) and different arterial stenosis requirements (50% or 75%) require the use of auxiliary needles of different diameters, so unification and standardization are needed;

[0004] The existing patent (publication number: CN215384844U) relates to an auxiliary device for preparing an abdominal aorta coarctation model in experimental animals. The auxiliary device includes a base, a fixed column, a movable rod, an auxiliary needle fixing rod and an auxiliary needle. One end of the fixed column is vertically fixedly connected to the base, and the other end of the fixed column is rotatably connected to one end of the movable rod. The other end of the movable rod is rotatably connected to one end of the auxiliary needle fixing rod. The other end of the auxiliary needle fixing rod is connected to an auxiliary needle, and the auxiliary needle is a 90° right angle.

[0005] In response to the above problems, existing patents have provided solutions, but the above solutions have certain limitations during use. Cardiovascular research experimental devices are usually carried out in a static simulated blood vessel cavity, while vascular stents are in a dynamic physiological environment in the body. In actual applications, blood vessels will continue to deform and displace with the beating of the heart, movement of the body, etc., and the vascular stents will also be subjected to forces of different directions and magnitudes. Static testing cannot fully simulate this dynamic stress condition, which may lead to inaccurate evaluation of the fatigue resistance of the vascular stent.

[0006] Therefore, a cardiovascular research experimental device is proposed. Utility Model Content

[0007] The purpose of the present utility model is to provide a cardiovascular research experimental device, which can solve the problem that existing cardiovascular research experimental devices are usually carried out in a static simulated blood vessel cavity, while the vascular stent is in a dynamic physiological environment in the body. In actual application, the blood vessels will continue to deform and displace with the beating of the heart, the movement of the body, etc., and the vascular stent will also be subjected to forces of different directions and magnitudes. Static testing cannot fully simulate this dynamic stress condition, which may lead to inaccurate evaluation of the fatigue resistance of the vascular stent.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solution: a cardiovascular research experimental device, comprising a laboratory table, wherein a first mounting frame and a second mounting frame are respectively provided on the front and rear sides of the top of the laboratory table, six mounting mechanisms are provided on opposite sides of the first mounting frame and the second mounting frame, a bracket is provided between the opposite sides of the first mounting frame and the second mounting frame, an adjustment mechanism is provided on the surface of the first mounting frame, and a stretching frame is provided on the bottom of the first mounting frame;

[0009] The adjustment mechanism includes a fixing sleeve, a limiting frame, an adjusting frame, an adjusting block and a first electric telescopic column. The interior of the fixing sleeve is rotatably connected to the surface of the first mounting frame, the rear side of the limiting frame is fixedly connected to the front side of the fixing sleeve, the rear side of the limiting frame contacts the front side of the first mounting frame, the rear side of the adjusting frame is fixedly connected to the front side of the first mounting frame, the surface of the adjusting frame is rotatably connected to the interior of the limiting frame, the top of the adjusting block is fixedly connected to the bottom of the limiting frame, and the surface of the first electric telescopic column is fixedly connected to the interior of the stretching frame.

[0010] Preferably, the front side and the rear side of the inner wall of the bracket are both provided with mounting sleeves, and the front side and the rear side of the mounting sleeve are respectively fixedly connected to the side opposite to the first mounting bracket and the second mounting bracket.

[0011] Preferably, a fixed block is fixedly connected to the surface of the mounting sleeve, and a movable sleeve is threadedly connected to the surface of the fixed block.

[0012] Preferably, a connecting ring is fixedly connected to the surface of the mounting sleeve, the surface of the connecting ring is in contact with the inner wall of the bracket, and the surface of the bracket is in close contact with the interior of the movable sleeve.

[0013] Preferably, an adjustment slot is provided on the top of the stretching frame, the bottom of the fixing sleeve extends into and contacts the interior of the adjustment slot, and the surface of the adjustment block extends into and is rotatably connected to the interior of the adjustment slot.

[0014] Preferably, four bolts are provided at the bottom of the stretching frame, the tops of the bolts pass through the stretching frame and extend into the interior of the fixing sleeve, the surfaces of the bolts are threadedly connected to the interior of the fixing sleeve, the rear side of the stretching frame is fixedly connected to a limit plate, and the front side of the limit plate is in contact with the rear side of the fixing sleeve.

[0015] Preferably, two limit blocks are fixedly connected to the bottom of the stretching frame, two limit slots are provided on the top of the laboratory table, and the bottoms of the limit blocks extend into the interior of the limit slots and are slidably connected to the interior of the limit slots.

[0016] Preferably, a second electric telescopic column is fixedly connected to the front side of the inner wall of the limiting groove, and the rear side of the telescopic end of the second electric telescopic column is fixedly connected to the front side of the limiting block.

[0017] Preferably, a protective sleeve is provided on the left side of the first electric telescopic column, and the right side of the protective sleeve extends to the surface of the telescopic end of the first electric telescopic column and is threadedly connected to the surface of the telescopic end of the first electric telescopic column.

[0018] Preferably, the left side of the protective sleeve is rotatably connected to a rotating ball, and the surface of the rotating ball contacts the right side of the adjustment block.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. This application uses a protective sleeve to drive the rotating ball on the left side of the telescopic end of the first electric telescopic column to move, so that the surface of the rotating ball contacts the right side of the adjustment block, thereby causing the adjustment block to drive the adjustment frame to move. The adjustment frame rotates inside the limit frame and simultaneously drives the bracket to rotate and stretch through the first mounting frame;

[0021] 2. According to the specifications of the bracket, the surface of the connecting ring contacts the inner wall of the bracket, so that the movable sleeve moves from the surface of the mounting sleeve to the surface of the bracket for installation and fixation, thereby facilitating the fixation of brackets of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is the overall structural diagram of the cardiovascular research experimental device of the present invention;

[0023] Figure 2 This is a three-dimensional connection diagram of the adjustment mechanism in the utility model;

[0024] Figure 3 This is a schematic diagram of the three-dimensional connection between the protective cover and the telescopic end of the first electric telescopic column in the present invention;

[0025] Figure 4 This is a schematic diagram of the three-dimensional structure of the bottom of the stretching frame in the present invention;

[0026] Figure 5 It is a three-dimensional connection diagram of the installation mechanism in the utility model.

[0027] In the figure, 1. laboratory table; 2. limiting slot; 3. stretching frame; 4. adjusting slot; 5. adjusting mechanism; 501. fixing sleeve; 502. limiting frame; 503. adjusting frame; 504. adjusting block; 505. first electric telescopic column; 6. first mounting frame; 7. bracket; 8. second mounting frame; 9. mounting mechanism; 901. mounting sleeve; 902. connecting ring; 903. fixing block; 904. movable sleeve; 10. protective sleeve; 11. limiting block; 12. limiting plate; 13. bolt; 14. second electric telescopic column; 15. rotating ball. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] See also Figure 1-5 , this utility model provides a technical solution:

[0030] A cardiovascular research experimental device includes an experimental table 1. A first mounting frame 6 and a second mounting frame 8 are respectively provided on the front and rear sides of the top of the experimental table 1. Six mounting mechanisms 9 are provided on the opposite sides of the first mounting frame 6 and the second mounting frame 8. A bracket 7 is provided between the opposite sides of the first mounting frame 6 and the second mounting frame 8. An adjustment mechanism 5 is provided on the surface of the first mounting frame 6. A stretching frame 3 is provided on the bottom of the first mounting frame 6.

[0031] The adjusting mechanism 5 includes a fixing sleeve 501, a limiting frame 502, an adjusting frame 503, an adjusting block 504 and a first electric telescopic column 505. The interior of the fixing sleeve 501 is rotatably connected to the surface of the first mounting frame 6. The rear side of the limiting frame 502 is fixedly connected to the front side of the fixing sleeve 501. The rear side of the limiting frame 502 contacts the front side of the first mounting frame 6. The rear side of the adjusting frame 503 is fixedly connected to the front side of the first mounting frame 6. The surface of the adjusting frame 503 is rotatably connected to the interior of the limiting frame 502. The top of the adjusting block 504 is fixedly connected to the bottom of the limiting frame 502. The surface of the first electric telescopic column 505 is fixedly connected to the interior of the stretching frame 3.

[0032] In this embodiment: by arranging the bracket 7 between the opposite sides of the first mounting bracket 6 and the second mounting bracket 8, the stretching frame 3 can be conveniently driven to move the first mounting bracket 6 through the fixing sleeve 501, so that the first mounting bracket 6 performs a stretching test on the bracket 7, and the interior of the fixing sleeve 501 is rotatably connected to the surface of the first mounting bracket 6, so that the fixing sleeve 501 can be conveniently limited to the first mounting bracket 6 through the limiting frame 502, and the rear side of the adjusting frame 503 is fixedly connected to the front side of the first mounting bracket 6, so that the telescopic end of the first electric telescopic column 505 can be conveniently driven to move the adjusting frame 503 through the adjusting block 504, so that the adjusting frame 503 rotates inside the limiting frame 502 and drives the bracket 7 to rotate and stretch through the first mounting bracket 6.

[0033] Specifically, such as Figure 1 、 Figure 5 As shown, the front and rear sides of the inner wall of the bracket 7 are both provided with mounting sleeves 901 , and the front and rear sides of the mounting sleeves 901 are fixedly connected to the opposite sides of the first mounting bracket 6 and the second mounting bracket 8 respectively.

[0034] Specifically, such as Figure 5 As shown, a fixed block 903 is fixedly connected to the surface of the installation sleeve 901 , and a movable sleeve 904 is threadedly connected to the surface of the fixed block 903 .

[0035] Specifically, such as Figure 1 、 Figure 5 As shown, a connecting ring 902 is fixedly connected to the surface of the mounting sleeve 901 , the surface of the connecting ring 902 contacts the inner wall of the bracket 7 , and the surface of the bracket 7 contacts the interior of the movable sleeve 904 in close contact.

[0036] In this embodiment, by connecting the surface of the fixed block 903 with the internal thread of the movable sleeve 904 , the movable sleeve 904 can be moved to the surface of the bracket 7 through the fixed block 903 , thereby achieving the effect of fixing the bracket 7 .

[0037] Specifically, such as Figure 1 、 Figure 2 As shown, an adjustment slot 4 is provided on the top of the stretching frame 3, the bottom of the fixing sleeve 501 extends into the interior of the adjustment slot 4 and contacts the interior of the adjustment slot 4, and the surface of the adjustment block 504 extends into the interior of the adjustment slot 4 and is rotatably connected to the interior of the adjustment slot 4.

[0038] Specifically, such as Figure 2 、 Figure 4 As shown, four bolts 13 are provided at the bottom of the stretching frame 3. The tops of the bolts 13 pass through the stretching frame 3 and extend into the interior of the fixing sleeve 501. The surfaces of the bolts 13 are threadedly connected to the interior of the fixing sleeve 501. The rear side of the stretching frame 3 is fixedly connected to the limit plate 12, and the front side of the limit plate 12 is in contact with the rear side of the fixing sleeve 501.

[0039] In this embodiment, the surface of the bolt 13 is connected to the inner thread of the fixing sleeve 501 , so that the bolt 13 can fix the fixing sleeve 501 , thereby achieving the effect of fixing the fixing sleeve 501 .

[0040] Specifically, such as Figure 1 、 Figure 4 As shown, two limit blocks 11 are fixedly connected to the bottom of the stretching frame 3, and two limit slots 2 are opened on the top of the experimental table 1. The bottom of the limit block 11 extends to the inside of the limit slot 2 and is slidably connected to the inside of the limit slot 2.

[0041] Specifically, such as Figure 1 、 Figure 4 As shown, the front side of the inner wall of the limiting groove 2 is fixedly connected with the second electric telescopic column 14 , and the rear side of the telescopic end of the second electric telescopic column 14 is fixedly connected with the front side of the limiting block 11 .

[0042] In this embodiment, by making the surface of the limit block 11 slidably connected with the interior of the limit groove 2, the telescopic end of the second electric telescopic column 14 can drive the stretching frame 3 to move through the limit block 11, thereby achieving the effect of conveniently driving the stretching frame 3 to move.

[0043] Specifically, such as Figure 2 、 Figure 3 As shown, a protective cover 10 is provided on the left side of the first electric telescopic column 505 , and the right side of the protective cover 10 extends to the surface of the telescopic end of the first electric telescopic column 505 and is threadedly connected to the surface of the telescopic end of the first electric telescopic column 505 .

[0044] Specifically, such as Figure 2 、 Figure 3 As shown, the left side of the protective sleeve 10 is rotatably connected to a rotating ball 15 , and the surface of the rotating ball 15 contacts the right side of the adjustment block 504 .

[0045] In this embodiment, by threading the interior of the protective sleeve 10 with the surface of the telescopic end of the first electric telescopic column 505, the protective sleeve 10 can conveniently protect the surface of the telescopic end of the first electric telescopic column 505 by rotating the ball 15, thereby achieving the effect of protecting the surface of the telescopic end of the first electric telescopic column 505.

[0046] Working principle: When conducting an experiment on the bracket 7, by setting the bracket 7 between the opposite sides of the first mounting bracket 6 and the second mounting bracket 8, according to the specifications of the bracket 7, the surface of the connecting ring 902 is brought into contact with the inner wall of the bracket 7, so that the movable sleeve 904 is moved from the surface of the mounting sleeve 901 to the surface of the bracket 7 for installation and fixation, thereby facilitating the fixation of brackets 7 of different specifications, and the telescopic end of the second electric telescopic column 14 can facilitate the movement of the limit block 11 inside the limit groove 2, so that the limit block 11 drives the stretching frame 3 to move, and the stretching frame 3 drives the movement of the first mounting bracket 6 through the fixed sleeve 501, so that the first mounting bracket 6 performs a stretching test on the bracket 7, and then the left side of the telescopic end of the first electric telescopic column 505 drives the rotating ball 15 to move through the protective sleeve 10, so that The surface of the rotating ball 15 contacts the right side of the adjustment block 504, so that the adjustment block 504 drives the adjustment frame 503 to move, and the adjustment frame 503 rotates inside the limit frame 502 while driving the bracket 7 to rotate and stretch through the first mounting frame 6, thereby achieving the effect of facilitating experiments on the bracket 7 in different directions, and solving the problem that existing cardiovascular research experimental equipment is usually carried out in a static simulated blood vessel cavity, while the vascular bracket 7 is in a dynamic physiological environment in the body. In actual application, the blood vessels will continue to deform and displace with the beating of the heart, the movement of the body, etc., and the vascular bracket 7 will also be subjected to forces of different directions and sizes. Static testing cannot fully simulate this dynamic stress condition, which may lead to inaccurate evaluation of the fatigue resistance of the vascular bracket 7.

[0047] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cardiovascular research experimental device, comprising an experimental table (1), wherein a first mounting frame (6) and a second mounting frame (8) are respectively provided on the front side and the rear side of the top of the experimental table (1), characterized in that: Six mounting mechanisms (9) are provided on opposite sides of the first mounting frame (6) and the second mounting frame (8), a bracket (7) is provided between the opposite sides of the first mounting frame (6) and the second mounting frame (8), an adjustment mechanism (5) is provided on the surface of the first mounting frame (6), and a stretching frame (3) is provided on the bottom of the first mounting frame (6); The adjustment mechanism (5) comprises a fixing sleeve (501), a limiting frame (502), an adjusting frame (503), an adjusting block (504) and a first electric telescopic column (505); the interior of the fixing sleeve (501) is rotatably connected to the surface of the first mounting frame (6); the rear side of the limiting frame (502) is fixedly connected to the front side of the fixing sleeve (501); the rear side of the limiting frame (502) contacts the front side of the first mounting frame (6); the rear side of the adjusting frame (503) is fixedly connected to the front side of the first mounting frame (6); the surface of the adjusting frame (503) is rotatably connected to the interior of the limiting frame (502); the top of the adjusting block (504) is fixedly connected to the bottom of the limiting frame (502); and the surface of the first electric telescopic column (505) is fixedly connected to the interior of the stretching frame (3).

2. A cardiovascular research experimental device according to claim 1, characterized in that: The front and rear sides of the inner wall of the bracket (7) are both provided with mounting sleeves (901), and the front and rear sides of the mounting sleeves (901) are fixedly connected to the opposite sides of the first mounting frame (6) and the second mounting frame (8), respectively.

3. A cardiovascular research experimental device according to claim 2, characterized in that: The surface of the installation sleeve (901) is fixedly connected to a fixed block (903), and the surface of the fixed block (903) is threadedly connected to a movable sleeve (904).

4. A cardiovascular research experimental device according to claim 3, characterized in that: A connecting ring (902) is fixedly connected to the surface of the mounting sleeve (901), the surface of the connecting ring (902) contacts the inner wall of the bracket (7), and the surface of the bracket (7) is in close contact with the interior of the movable sleeve (904).

5. The cardiovascular research experimental device according to claim 1, characterized in that: An adjustment slot (4) is provided on the top of the stretching frame (3); the bottom of the fixing sleeve (501) extends to the inside of the adjustment slot (4) and contacts the inside of the adjustment slot (4); and the surface of the adjustment block (504) extends to the inside of the adjustment slot (4) and is rotatably connected to the inside of the adjustment slot (4).

6. The cardiovascular research experimental device according to claim 1, characterized in that: Four bolts (13) are provided at the bottom of the stretching frame (3), the tops of the bolts (13) pass through the stretching frame (3) and extend into the interior of the fixing sleeve (501), the surfaces of the bolts (13) are threadedly connected to the interior of the fixing sleeve (501), the rear side of the stretching frame (3) is fixedly connected to a limiting plate (12), and the front side of the limiting plate (12) is in contact with the rear side of the fixing sleeve (501).

7. The cardiovascular research experimental device according to claim 1, characterized in that: The bottom of the stretching frame (3) is fixedly connected to two limit blocks (11), the top of the experimental table (1) is provided with two limit slots (2), and the bottom of the limit block (11) extends to the inside of the limit slot (2) and is slidably connected to the inside of the limit slot (2).

8. The cardiovascular research experimental device according to claim 7, characterized in that: A second electric telescopic column (14) is fixedly connected to the front side of the inner wall of the limiting groove (2), and the rear side of the telescopic end of the second electric telescopic column (14) is fixedly connected to the front side of the limiting block (11).

9. The cardiovascular research experimental device according to claim 1, characterized in that: A protective sleeve (10) is provided on the left side of the first electric telescopic column (505), and the right side of the protective sleeve (10) extends to the surface of the telescopic end of the first electric telescopic column (505) and is threadedly connected to the surface of the telescopic end of the first electric telescopic column (505).

10. The cardiovascular research experimental device according to claim 9, characterized in that: The left side of the protective sleeve (10) is rotatably connected to a rotating ball (15), and the surface of the rotating ball (15) contacts the right side of the adjustment block (504).

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