Testing Tooling

Abstract

The present invention relates to a detection tooling for detecting the sealing performance between a blood pump and a ventricular connector. The ventricular connector is sleeved on the inlet pipe of the blood pump, and a connection seam is formed between the ventricular connector and the inlet pipe. The detection tooling includes: a main body portion having a liquid storage cavity and a liquid outlet that communicate with each other; a valve body disposed at the liquid outlet, and the valve body can close or open the liquid outlet; a sealing member sealingly connected to the main body portion, the sealing member having a relief hole for inserting the inlet pipe, the position of the relief hole corresponding to that of the liquid outlet, and the sealing member can be in sealing contact with the ventricular connector when the inlet pipe is inserted into the liquid outlet, and make the relief hole communicate with the connection seam; and a collection device capable of receiving the liquid flowing out from the connection seam.

Description

Technical Field

[0001] The present invention relates to the technical field of simulation detection, and particularly to a detection tool for detecting the sealing performance between a blood pump and a ventricular connector. Background Art

[0002] An artificial blood pump, also known as a ventricular assist device, during an artificial heart implantation surgery, its outlet end is connected and sutured to the aorta through an artificial blood vessel, and its inlet end is directly inserted into the heart through an opening in the cardiac apex to communicate with the ventricle, and the blood pump and the heart are fixed through a ventricular connector. The ventricular connector has functions such as positioning the inlet tube of the blood pump in the ventricle and sealing to prevent bleeding.

[0003] Due to the assembly gap between the ventricular connector and the outer peripheral wall of the inlet tube of the blood pump, blood will ooze from the joint between the ventricular connector and the inlet tube of the blood pump. At present, it is difficult to simulate the blood oozing situation at the joint between the ventricular connector and the inlet tube of the blood pump after the blood pump is implanted into the human heart, so there is an urgent need for improvement. Summary of the Invention

[0004] Based on this, in view of the above problems, it is necessary to provide a detection tool to simulate and detect the amount of blood oozing at the joint between the ventricular connector and the inlet tube of the blood pump. The present invention achieves the above object through the following technical solutions.

[0005] The present invention provides a detection tool for detecting the sealing performance between a blood pump and a ventricular connector. The ventricular connector is sleeved on the inlet tube of the blood pump, and a connection seam is formed between the ventricular connector and the inlet tube. The detection tool includes:

[0006] A main body part, the main body part having a liquid storage cavity and a liquid outlet that communicate with each other;

[0007] A valve body, arranged at the liquid outlet, the valve body being able to close or open the liquid outlet;

[0008] A seal, hermetically connected to the main body part, the seal having a relief hole for inserting the inlet tube, the position of the relief hole corresponding to that of the liquid outlet. The seal can be in sealing contact with the ventricular connector when the inlet tube is inserted into the liquid outlet, and the relief hole is communicated with the connection seam; and

[0009] A collection device, capable of receiving the liquid flowing out from the connection seam.

[0010] Optionally, the valve body includes a valve core, and the valve core can move relative to the main body part along the through direction of the liquid outlet.

[0011] Optionally, the valve body further includes a housing, the housing is installed on the main body part, the housing is located in the liquid storage cavity and covers the liquid outlet;

[0012] On one side of the housing facing the liquid outlet, a groove is provided, and the housing is further provided with at least one liquid inlet, and the liquid inlets are respectively communicated with the liquid storage cavity and the groove;

[0013] The valve core is located in the groove and is movably connected to the groove, so that the liquid inlet can communicate with the liquid outlet through the groove.

[0014] Optionally, an elastic reset member is provided between the valve core and the bottom wall of the groove, and the elastic reset member has a tendency to move the valve core towards the liquid outlet.

[0015] Optionally, the sealing member penetrates through the liquid outlet, one end of the sealing member is in sealing contact with the housing, and the other end of the sealing member is located outside the main body portion and can be in sealing abutment with the ventricular connecting member.

[0016] Optionally, the collecting device includes a carrier, and the carrier has a carrying surface for carrying the blood pump;

[0017] The detection tooling further includes a base, and the carrier is movably connected to the base so as to be able to move along the through direction of the liquid outlet, so that the inlet pipe can be inserted into or withdrawn from the liquid outlet, and the valve body can be pushed open to open the liquid outlet when the inlet pipe is inserted into the liquid outlet.

[0018] Optionally, the base is provided with an adjustment hole, the opening direction of the adjustment hole is along the through direction of the liquid outlet, the adjustment hole is a threaded hole, and the carrier has a support rod, and the support rod is provided with an external thread to cooperate with the adjustment hole.

[0019] Optionally, the carrying surface is provided with a liquid collecting groove and a liquid collecting hole, the bottom of the liquid collecting groove is inclined, and the liquid collecting hole is located at the lowest position of the bottom of the groove; and / or,

[0020] The carrying surface is provided with a plurality of positioning protrusions, and the plurality of positioning protrusions can surround the blood pump and are used for clamping the blood pump.

[0021] Optionally, the main body portion includes a liquid storage tank and a fixing seat, the liquid storage tank forms the liquid storage cavity, the liquid storage cavity is provided with an open mouth, the fixing seat seals and covers the open mouth, the fixing seat is provided with the liquid outlet, and the fixing seat is installed on the base.

[0022] Optionally, the detection tooling further includes a pressurizing member and a pressure detecting member, the pressurizing member is communicated with the liquid storage cavity to adjust the pressure in the liquid storage cavity, and the pressure detecting member is communicated with the liquid storage cavity to detect the pressure in the liquid storage cavity;

[0023] And / or, the main body is further provided with a spare interface connecting the liquid storage cavity and the external environment, and the main body is provided with a spare plug cooperating with the spare interface.

[0024] In the technical solution of the present application, after the blood pump is inserted into the liquid outlet of the main body and the clearance hole of the seal, the ventricular connector sleeved with the blood pump can be in sealing contact with the seal, so the seal seals the ventricular connector and the main body, ensuring that the ventricular connector is tightly fitted with the main body through the seal. When the valve body opens the liquid outlet, the liquid in the liquid storage chamber flows out from the liquid outlet and the clearance hole. During this process, the entrance of the blood pump inlet tube is closed, so the liquid flowing out from the liquid outlet and the clearance hole can only flow out through the connecting seam between the ventricular connector and the blood pump. Thus, the bleeding situation after the blood pump is implanted in the heart can be simulated through the main body and the seal. At the same time, the liquid seeping from the connecting seam can be collected by the collection device, so that the user can judge whether the total amount of liquid is within a reasonable range based on the collected liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the assembly structure of the blood pump and the ventricular connection piece;

[0026] Figure 2 A schematic diagram of the structure of the detection tooling provided by the present invention;

[0027] Figure 3 for Figure 2 An exploded view of the inspection tooling shown;

[0028] Figure 4 for Figure 2 The schematic diagram of the structure of the detection tool shown is when the inlet pipe of the blood pump contacts the valve core;

[0029] Figure 5 for Figure 4 A local enlarged view at point A;

[0030] Figure 6 for Figure 2 A schematic diagram of the connection structure between the fixing base and the shell of the detection tool shown;

[0031] Figure 7 for Figure 2 The schematic diagram of the structure of the detection tool after the inlet pipe of the blood pump hits the valve core;

[0032] Figure 8 for Figure 7 A local enlarged view at point B;

[0033] Figure 9 for Figure 2 A schematic structural diagram of the carrier of the detection tooling is shown.

[0034] Description of the reference numerals in the drawings:

[0035]

[0036] Specific embodiments

[0037] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the specific embodiments of the present invention will be given in conjunction with the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0039] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0040] Please refer to Figures 1 to 3 , the present invention provides a detection tooling 1000 for simulating and detecting the blood leakage amount at the joint of the ventricular connector 3000 and the inlet pipe 2100 of the blood pump 2000 within a preset time period. The ventricular connector 3000 is in a ring structure and is sleeved on the inlet pipe 2100 of the blood pump 2000. Specifically, the ventricular connector 3000 forms a mounting hole, and the inlet pipe 2100 passes through the mounting hole. A connection seam is formed between the hole wall of the mounting hole and the outer wall surface of the inlet pipe 2100, that is, the joint mentioned above. The detection tooling 1000 includes a main body portion 200 and a valve body 400.

[0041] Please refer to Figures 3 to 5, the main body 200 has a liquid storage cavity 200a and a liquid outlet 500a that communicates the liquid storage cavity 200a with the external environment. In one example, the liquid outlet 500a is located at the bottom of the main body 200 to facilitate the outflow of the liquid in the liquid storage cavity 200a. A liquid filling port 200c that communicates the liquid storage cavity 200a with the external environment is also provided at the top of the main body 200, and a liquid filling cap 200d is covered at the liquid filling port 200c to facilitate adding a liquid simulating blood, such as glycerol water, into the liquid storage cavity 200a. In addition, the main body 200 may also be provided with only the liquid outlet 500a, and liquid filling and liquid discharging are performed through the liquid outlet 500a.

[0042] Specifically, please refer to Figures 4 to 6 , the main body 200 includes a fixed seat 210 and a liquid storage tank 220. A liquid storage cavity 200a is formed in the liquid storage tank 220. The liquid storage cavity 200a is provided with an open mouth, and the fixed seat 210 seals the open mouth. In one example, the liquid storage tank 220 is provided in a cylindrical shape with one end open. The open end of the liquid storage tank 220 is detachably connected to the fixed seat 210 so that the fixed seat 210 and the liquid storage tank 220 enclose to form the liquid storage cavity 200a, and the liquid outlet 500a is provided on the fixed seat 210. With such a setting, when it is necessary to clean the main body 200, the liquid storage tank 220 is removed, and the inside of the fixed seat 210 and the liquid storage tank 220 is cleaned, so that the main body 200 can be cleaned conveniently.

[0043] Further, please refer to Figures 4 to 6 , a limiting convex ring 211 surrounding the liquid outlet 500a is provided on the side of the fixed seat 210 facing the liquid storage tank 220, and the inner peripheral wall of the open end of the liquid storage tank 220 is sleeved and matched with the outer peripheral wall of the limiting convex ring 211. Optionally, the inner peripheral wall of the open end of the liquid storage tank 220 is tightly fitted with the outer peripheral wall of the limiting convex ring 211, that is, interference fit or transition fit, which has the effects of pre-positioning and limiting. With such a setting, the detachable connection between the fixed seat 210 and the liquid storage tank 220 is convenient. Further, a sealing ring 221 is clamped between the side of the fixed seat 210 facing the liquid storage tank 220 and the liquid storage tank 220. The sealing ring 221 is arranged around the open end of the liquid storage tank 220, that is, the sealing ring 221 is arranged around the periphery of the limiting convex ring 211. With such a setting, the joint between the fixed seat 210 and the liquid storage tank 220 can be sealed through the sealing ring 221 to ensure the sealing performance of the joint between the fixed seat 210 and the liquid storage tank 220. In addition, the detachable connection between the fixed seat 210 and the liquid storage tank 220 may also be other detachable connection methods such as threaded connection and magnetic attraction connection.

[0044] The liquid storage tank 220 may generally be cylindrical. The fixing base 210 may include a support plate 212 and a plurality of connecting portions 213. The plurality of connecting portions 213 are circumferentially distributed along the support plate 212. One end of the connecting portion 213 is connected to the support plate 212, and the other end of the connecting portion 213 is connected to the base 100 (introduced in the following embodiments). The number of the connecting portions 213 may be two, three, four, etc. In some embodiments, two connecting portions 213 are provided, and the two connecting portions 213 are distributed on two opposite sides of the support plate 212 to achieve stable support for the support plate 212. The connecting portion 213 may be columnar or plate-shaped. When the connecting portion 213 is plate-shaped, a single connecting portion 213 has a larger support area, so fewer connecting portions 213 may be provided. Optionally, the base 110 of the base 100 is provided with a relief groove 111. One end of the connecting portion 213 extends into the relief groove 111 and is in tight fit with the relief groove 111 to achieve the effect of pre-positioning. A connecting hole 112 is provided at the bottom of the relief groove 111. The connecting hole 112 penetrates through the base 110, and a screw or other fastener passes through the connecting hole 112 to lock the connecting portion 213 to the base 110.

[0045] The valve body 400 is provided corresponding to the liquid outlet 500a. The valve body 400 may be provided in the liquid outlet 500a or in the liquid storage chamber 200a. The valve body 400 can close or open the liquid outlet 500a. In an example, when the blood pump 2000 moves in a direction close to the liquid outlet 500a until the inlet pipe 2100 of the blood pump 2000 extends into the liquid outlet 500a and abuts against the valve body 400, at least part of the valve body 400 can be pushed inward to open the liquid outlet 500a. Obviously, after the inlet pipe 2100 of the blood pump 2000 releases the abutment against the valve body 400, the valve body 400 can return to the state of closing the liquid outlet 500a under the action of the liquid in the liquid storage chamber 200a or the elastic reset member.

[0046] In other embodiments, for example, a sensor may be provided in the liquid outlet 500a. When the inlet pipe 2100 of the blood pump 2000 extends into the liquid outlet, after the sensor detects the entry of the inlet pipe 2100, it outputs a sensing signal to control the valve body to open the liquid outlet 500a, without the inlet pipe 2100 directly abutting against the valve body.

[0047] The number of the liquid outlets 500a may be set to one or more. When the number of the liquid outlets 500a is multiple, the number of the valve bodies 400 is set to be adapted to the number of the liquid outlets 500a. At this time, the above-mentioned liquid outlets 500a and valve bodies 400 are arranged in one-to-one correspondence, and the blood leakage amounts at the joints of a plurality of ventricular connectors 3000 and the corresponding inlet pipes 2100 of the blood pumps 2000 can be detected simultaneously within a preset time period.

[0048] More specifically, the inner diameter of the liquid outlet 500a is less than or equal to the outer diameter of the ventricular connector 3000 and is greater than the inner diameter of the mounting hole. When the inlet tube 2100 of the blood pump 2000 extends into the liquid outlet 500a, the ventricular connector 3000 is located outside the main body 200 and does not extend into the liquid outlet 500a. Optionally, the ventricular connector 3000 may abut against the outer side of the main body 200.

[0049] Furthermore, a sealing member 500 is provided between the ventricular connector 3000 and the main body 200. The sealing member 500 surrounds the connecting seam and seals the ventricular connector 3000 and the main body 200 respectively, so that the liquid flowing out of the liquid outlet 500a only flows out through the connecting seam.

[0050] Specifically, the sealing member 500 is disposed at the liquid outlet 500a, and the sealing member 500 is provided with a clearance hole 500c, so that the sealing member 500 forms a ring shape. The clearance hole 500c of the sealing member 500 is inserted into the inlet tube 2100, so the clearance hole 500c corresponds to the position of the liquid outlet 500a. When the inlet tube 2100 is inserted into the liquid outlet 500a, the sealing member 500 can be sealed and abutted against the ventricular connector 3000, and the clearance hole 500c is communicated with the connection seam.

[0051] The inlet end of the inlet tube 2100 located in the liquid outlet 500a is closed. When the liquid outlet 500a is opened, the liquid in the liquid storage chamber 200a does not enter the inlet tube 2100, but flows down from the gap between the inner wall of the liquid outlet 500a and the outer wall of the inlet tube 2100 of the blood pump 2000. Since the ventricular connector 3000 and the main body 200 are sealed by the sealing member 500 and fit tightly under continuous resistance pressure, the seal is achieved. The liquid can only flow through the joint between the ventricular connector 3000 and the inlet tube 2100, i.e. the connecting seam, and continue to flow to the surface of the blood pump 2000 and flow down along the surface of the blood pump 2000, thereby simulating the bleeding of the blood pump 2000 after implantation in the heart.

[0052] Furthermore, the detection tooling also includes a collecting device (not shown), which is arranged corresponding to the liquid outlet 500a and receives the liquid flowing out of the connection seam. The collecting device can be an open container such as a collecting bucket or a collecting basin, and is arranged correspondingly below the liquid outlet 500a. A scale can be set on the collecting device to directly read the volume of the liquid.

[0053] By setting up a collecting device to collect the liquid leaking from the connection seam, the total leakage amount of the liquid can be obtained, so as to facilitate the subsequent judgment of whether the structure of the ventricular connector meets the standards based on the total leakage amount.

[0054] Further, the collection device further includes a carrier 300 having a carrying surface 300d on which the blood pump is located. Thus, the carrying surface 300d is used to support the blood pump. In other embodiments, the collection device may only have the function of liquid collection and does not have the function of supporting the blood pump. For example, the blood pump may be fixed to the main body 200.

[0055] Further, the detection tooling further includes a base 100 that provides an installation position for the main body 200 and the carrier 300. The carrier 300 is movably connected to the base 100 so as to be able to move along the through direction of the liquid outlet 500a, enabling the blood pump inlet pipe 2100 to be inserted into or withdrawn from the liquid outlet 500a.

[0056] There are many ways to form the base 100. The base 100 may be assembled from a plurality of rod-shaped structural members, or may be assembled from a plurality of plate-shaped structural members. The base 100 may also be integrally formed by methods such as casting and die-casting, and no specific limitation is made here. The shape of the base 100 may be set as a square, a circle or other shapes, and no specific limitation is made here.

[0057] Specifically, the base 100 includes a base platform 110 and a plurality of support legs 120 both connected to the base platform 110. The plurality of support legs 120 are all connected to the base platform 110 to support the base platform 110.

[0058] The carrier 300 is disposed on the base 100 and is disposed opposite to the liquid outlet 500a. The carrier 300 is used to carry and drive the blood pump 2000 to move in a direction close to or away from the liquid outlet 500a. Obviously, after the ventricular connector 3000 and the inlet pipe 2100 of the blood pump 2000 are sleeved and fixed, the blood pump 2000 is placed on the carrier 300 so that the carrier 300 carries the blood pump 2000.

[0059] Through the above technical solution, when simulating and detecting the blood leakage amount at the joint of the ventricular connector 3000 and the inlet pipe 2100 of the blood pump 2000, first, a liquid simulating blood is added into the main body 200. Then, the ventricular connector 3000 is first sleeved and fixed with the inlet pipe 2100 of the blood pump 2000, and then the blood pump 2000 is placed on the carrier 300, and the inlet pipe 2100 of the blood pump 2000 is aligned with the liquid outlet 500a. Secondly, the carrier 300 drives the blood pump 2000 to move in a direction close to the liquid outlet 500a until the ventricular connector 3000 abuts against the outer surface of the main body 200 (specifically against the seal 500), simulating the heart pressing against the ventricular connector 3000, and at the same time enabling the inlet pipe 2100 of the blood pump 2000 to pass through the liquid outlet 500a and abut against the valve body 400 to open the liquid outlet 500a (such as Figure 7 and Figure 8As shown in the figure, the inner diameter of the liquid outlet 500a is less than or equal to the outer diameter of the ventricular connector 3000 and greater than the inner diameter of the ventricular connector 3000. After the ventricular connector 3000 abuts against the main body portion 200, the liquid in the liquid storage cavity 200a can only flow to the joint between the ventricular connector 3000 and the inlet pipe 2100 of the blood pump 2000 through the gap between the inner peripheral wall of the liquid outlet 500a and the outer peripheral wall of the inlet pipe 2100 of the blood pump 2000, so as to simulate the blood leakage situation of the blood pump 2000 after being implanted into the heart. Finally, first drive the blood pump 2000 and the ventricular connector 3000 in the direction away from the liquid outlet 500a by the carrier 300 until the ventricular connector 3000 is spaced from the main body portion 200, the inlet pipe 2100 of the blood pump 2000 is spaced from the valve body 400 and is withdrawn from the liquid outlet 500a, the abutment against the valve body 400 is released, the valve body 400 seals the liquid outlet 500a, then remove the blood pump 2000, detach the ventricular connector 3000 from the blood pump 2000, replace it with another ventricular connector 3000 for simulation detection, and repeat this process to achieve batch simulation detection of the ventricular connector 3000.

[0060] Please refer to Figures 4 to 8 , there are many types of the above-mentioned valve body 400. In an embodiment of the present invention, the valve body 400 includes a valve core 420, and the valve core 420 can move along the through direction of the liquid outlet 500a to close or open the liquid outlet 500a. At the same time, when the valve core 420 opens the liquid outlet 500a, the valve core 420 blocks the inlet pipe, that is, the inlet end of the inlet pipe can contact the valve core 420 and is sealed by the valve core 420. Of course, in other embodiments, before the detection, the inlet of the inlet pipe can also be sealed with a sealing plug.

[0061] The valve body 400 further includes a housing 410, the housing 410 is arranged in the liquid storage cavity 200a and covers the liquid outlet 500a. A groove 410a is provided on the side of the housing 410 facing the liquid outlet 500a, and at least one liquid inlet 410b communicating the groove 410a and the liquid storage cavity 200a is provided on the side wall of the housing 410. The valve core 420 is located in the groove 410a and seals the liquid outlet 500a under the action of the liquid in the liquid storage cavity 200a. The valve core 420 opens the liquid outlet 500a when the carrier 300 drives the blood pump 2000 in the direction close to the liquid outlet 500a until the inlet pipe 2100 of the blood pump 2000 passes through the seal 500 and abuts against the valve core 420, so that the liquid outlet 500a is communicated with the liquid inlet 410b through the groove 410a.

[0062] There are many ways to connect the housing 410 to the main body 200. The housing 410 and the main body 200 can be fixedly connected, such as by bonding, ultrasonic welding, etc., or the housing 410 and the main body 200 can be detachably connected, such as by screw connection, snap connection, magnetic attraction connection, etc. Specific limitations are not made here.

[0063] In some embodiments, the housing 410 is disposed within the limit convex ring 211, that is, the limit convex ring 211 surrounds the housing 410. Disposing the housing 410 within the limit convex ring 211 can position the housing 410 and ensure that the groove 410a on the housing 410 corresponds to the liquid outlet 500a.

[0064] Optionally, the outer shape of the housing 410 is adapted to the space surrounded by the limit convex ring 211. In one example, the outer shape of the housing 410 is circular, and the limit convex ring 211 is a circular ring. Specifically, the inner wall of the limit convex ring 211 contacts the outer side surface of the housing 410, thereby providing a certain limiting effect on the housing 410.

[0065] In the above, the central axes of the limit convex ring 211, the liquid outlet 500a, and the liquid storage tank 220 can coincide.

[0066] The liquid inlet 410b can be a notch provided on the side surface of the valve core 420 and penetrating the bottom of the valve core 420; alternatively, the liquid inlet 410b is a through hole provided on the side surface of the valve core 420 and extending horizontally; or the liquid inlet 410b is a through hole provided on the top surface of the valve core 420 and extending in the up and down direction. In one example, one end of the liquid inlet 410b close to the notch of the groove 410a, that is, the lower end, penetrates the bottom surface of the valve core 420 to form a notch shape, and one end of the liquid inlet 410b close to the bottom of the groove 410a, that is, the upper end, is flush with the bottom of the groove 410a, so as to facilitate the liquid in the liquid storage cavity 200a to flow into the groove 410a through the liquid inlet 410b.

[0067] It should be noted that when the liquid inlet 410b is provided on the side surface of the valve core 420, the liquid inlet 410b is at least partially higher than the limit convex ring 211 to prevent the limit convex ring 211 from hindering the flow of the liquid in the liquid storage cavity to the liquid inlet 410b.

[0068] The number of the liquid inlets 410b can be one or more. When the number of the liquid inlets 410b is multiple, the multiple liquid inlets 410b are arranged at intervals along the circumferential direction of the groove 410a, so as to facilitate the liquid in the liquid storage cavity 200a to flow into the groove 410a through the multiple liquid inlets 410b.

[0069] The outer peripheral wall of the valve core 420 is in clearance fit with the inner peripheral wall of the groove 410a, so as to facilitate the smooth up-and-down movement of the valve core 420 within the groove 410a. In the depth direction of the groove 410a (i.e., the up-and-down direction, which is also the movement direction of the valve core 420), the height of the valve core 420 is less than the width of the liquid inlet 410b. With such a setting, when the valve core 420 is abutted by the inlet pipe 2100 of the blood pump 2000, as long as the valve core 420 is displaced, there is no possibility that the valve core 420 completely blocks the liquid inlet 410b. In this way, it can be ensured that the liquid outlet 500a communicates with the liquid inlet 410b through the groove 410a. Therefore, the movement stroke of the valve core 420 is not restricted to a certain extent, and the movement is more flexible.

[0070] Through the above technical solution, when the carrier 300 drives the blood pump 2000 to move towards the liquid outlet 500a until the inlet pipe 2100 of the blood pump 2000 passes through the liquid outlet 500a and abuts against the valve core 420, the valve core 420 moves away from the liquid outlet 500a until it abuts against the bottom of the groove 410a, opening the liquid outlet 500a. Then, the simulated blood in the liquid storage cavity 200a first flows to the liquid outlet 500a through the liquid inlet 410b and the groove 410a, and then flows to the joint between the ventricular connecting member 3000 and the inlet pipe 2100 of the blood pump 2000 through the clearance between the inner peripheral wall of the liquid outlet 500a and the outer peripheral wall of the inlet pipe 2100 of the blood pump 2000. When the carrier 300 drives the blood pump 2000 to move away from the liquid outlet 500a until the inlet pipe 2100 of the blood pump 2000 releases the abutment against the valve core 420, the valve core 420 is restored to cover the liquid outlet 500a under the action of the liquid in the liquid storage cavity 200a.

[0071] Further, the valve core 420 is made of an elastic material. With such a setting, when the valve core 420 is abutted against the bottom of the groove 410a, it will produce a certain degree of elastic deformation, so that when the abutment is released, the valve core 420 can be restored to cover the liquid outlet 500a under the dual action of its own resilience and the liquid in the liquid storage cavity 200a. At the same time, when the elastic valve core 420 covers the liquid outlet 500a, it will produce a certain deformation under the action of the liquid in the liquid storage cavity 200a, so as to ensure that the valve core 420 better seals the liquid outlet 500a and prevent the liquid in the liquid storage cavity 200a from seeping out from the joint between the valve core 420 and the liquid outlet 500a. In addition, the valve core 420 can also be made of a non-elastic material.

[0072] In other embodiments, the valve body 400 can also be configured as an elastic sheet. The end of the elastic sheet is fixedly connected to the chamber wall of the liquid storage chamber 200a adjacent to the liquid outlet 500a to seal the liquid outlet 500a. When the carrier 300 drives the blood pump 2000 to move towards the direction close to the liquid outlet 500a until the inlet pipe 2100 of the blood pump 2000 passes through the liquid outlet 500a and abuts against the elastic sheet, the liquid outlet 500a is opened.

[0073] Please refer to Figure 4 and Figure 5 , in order to facilitate the spool 420 to return to sealing the liquid outlet 500a after the inlet pipe 2100 of the blood pump 2000 releases the abutment against the spool 420. In an embodiment of the present invention, an elastic reset member 430 is provided between the spool 420 and the bottom of the groove 410a. With such a setting, when the inlet pipe 2100 of the blood pump 2000 abuts against the spool 420, the elastic reset member 430 is compressed. After the inlet pipe 2100 of the blood pump 2000 releases the abutment against the spool 420, the spool 420 quickly returns to sealing the liquid outlet 500a under the action of the self-return elastic force of the elastic reset member 430, so as to facilitate the spool 420 to return to sealing the liquid outlet 500a.

[0074] There are many types of the elastic reset member 430. The elastic reset member 430 can be a spring, a spring block or other elastic elements. The number of the elastic reset members 430 can be one or more. When the number of the elastic reset members 430 is multiple, the types of the elastic reset members 430 can be the same or different, and no specific limitation is made here.

[0075] Please refer to Figures 3 to 5 , the seal 500 is provided in a cylindrical shape with both ends open. The seal 500 is inserted through the liquid outlet 500a and is in sealing contact with the hole wall of the liquid outlet 500a. One end of the seal 500 is located outside the main body portion. The inlet pipe 2100 of the blood pump 2000 passes through the seal 500. When the carrier 300 drives the blood pump 2000 to move towards the direction close to the liquid outlet 500a until the inlet pipe 2100 of the blood pump 2000 passes through the liquid outlet 500a and abuts against the valve body 400, the ventricular connector 3000 abuts against the seal 500 and the liquid outlet 500a is opened. One end of the seal 500 in the axial direction extends out of the liquid storage tank 220 in the direction away from the liquid storage chamber 200a. With such a setting, on the one hand, it is convenient for the seal 500 to abut against the ventricular connector 3000. On the other hand, when abutting against the ventricular connector 3000, it can avoid rigid contact and cause wear, and can also provide elastic deformation to improve the sealing performance of the abutting surface between the two.

[0076] It should be noted that the seal 500 can be entirely elastic, or it can be partially elastic. For example, the two axial ends of the seal 500 are elastic, and the middle part of the seal 500 is not elastic. The material of the seal 500 can be silica gel, rubber, plastic, or other elastic materials, and no specific limitation is made here.

[0077] Please refer to Figures 3 to 5 , in order to further improve the sealing performance, in an embodiment of the present invention, the other axial end of the seal 500 extends into the liquid storage cavity 200a. Optionally, the other axial end of the seal 500 is flush with the end of the liquid outlet 500a close to the liquid storage cavity 200a. The diameter of the notch of the groove 410a is larger than the inner diameter of the seal 500 and less than or equal to the outer diameter of the seal 500, so that the seal 500 can be in sealing contact with the housing 410, thereby sealing the gap between the housing 410 and the main body 200. With such a setting, the seal 500 is subjected to an axial force and is closely attached to the housing 410, and the liquid flowing into the groove 410a cannot flow out from the surface where the seal 500 is in contact with the housing 410, so as to further improve the sealing performance at this place.

[0078] Please refer to Figures 3 to 5 , in order to facilitate the fixation of the outer peripheral wall of the seal 500 and the inner peripheral wall of the liquid outlet 500a, in an embodiment of the present invention, a positioning groove 500b extending along the circumferential direction of the seal 500 is provided on the outer peripheral wall of the seal 500, and a positioning protrusion 210b extending along the circumferential direction of the liquid outlet 500a is provided on the inner peripheral wall of the liquid outlet 500a. The positioning groove 500b and the positioning protrusion 210b cooperate to limit the relative movement of the seal 500 with respect to the main body 200.

[0079] Furthermore, one end of the seal 500 protrudes outside the main body 200 and can be in sealing contact with the ventricular connector 3000. Optionally, a limiting protrusion 500d is formed at the end of the seal 500 protruding outside the main body 200. The limiting protrusion 500d abuts against the outer side surface of the main body 200 and can also be in sealing contact with the ventricular connector 3000. The setting of the limiting protrusion 500d increases the contact area between the seal 500 and the ventricular connector 3000, and the sealing effect of the seal 500 on the ventricular connector 3000 is better.

[0080] In other embodiments, the outer peripheral wall of the seal 500 and the inner peripheral wall of the liquid outlet 500a can also be in interference fit, or the outer peripheral wall of the seal 500 and the inner peripheral wall of the liquid outlet 500a can be fixedly bonded.

[0081] Preferably, the diameter of the outer peripheral wall of the seal 500 near one end close to the carrier 300 is tapered in the direction from the seal 500 to the carrier 300. With such a setting, when the ventricular connector 3000 abuts against one end of the seal 500 close to the carrier 300, since the abutting area between the seal 500 and the ventricular connector 3000 is the same and the contact area here is the smallest, the extrusion force is concentrated on the ventricular connector 3000, which is conducive to improving the sealing performance of the abutting surface between the two.

[0082] Please refer to Figures 3 to 5 and Figure 9 As mentioned above, there are many ways for the above-mentioned carrier 300 to drive the blood pump 2000 to move in the direction close to or away from the liquid outlet 500a. In an embodiment of the present invention, the base 100 is provided with an adjustment hole 100a, and the opening direction of the adjustment hole 100a is parallel to the through direction of the liquid outlet 500a. Optionally, the axis of the adjustment hole 100a coincides with the axis of the liquid outlet 500a. The carrier 300 includes a carrier table 310 and a support rod 320 connected to the carrier table 310. The carrier table 310 is disposed opposite to the liquid outlet 500a and is used to carry the blood pump 2000 and the ventricular connector 3000. The adjustment hole 100a is a threaded hole, and the support rod 320 is provided with an external thread. The support rod 320 is threadedly connected to the adjustment hole 100a and can adjust the distance between the carrier table 310 and the liquid outlet 500a. Preferably, a screwing block extending along the circumferential direction of the support rod 320 is provided at a position on the outer peripheral wall of the support rod 320 adjacent to the carrier table 310 to facilitate screwing the support rod 320 with a tool.

[0083] Through the above technical solution, when the carrier 300 drives the blood pump 2000 to move in the direction close to or away from the liquid outlet 500a, rotating the support rod 320 forward and backward can drive the carrier table 310 and the blood pump 2000 to move in the direction close to or away from the liquid outlet 500a.

[0084] In other embodiments, the carrier 300 can also be set as a linear transmission structure, and the linear transmission structure carries and drives the blood pump 2000 to move in the direction close to or away from the liquid outlet 500a. The linear transmission structure can be a motor screw linear transmission module, a cylinder hydraulic rod linear transmission module, etc.

[0085] Please refer to Figures 3 to 5 and Figure 9 In order to facilitate the collection of blood oozing from the connection seam between the ventricular connector 3000 and the inlet pipe 2100 of the blood pump 2000, in an embodiment of the present invention, a liquid collecting groove 300a is provided on the bearing surface 300d, and a liquid collecting hole 300b is provided at the bottom of the liquid collecting groove 300a. The blood is concentrated in the liquid collecting groove 300a and flows down along the liquid collecting hole 300b.

[0086] Optionally, the liquid collecting groove 300a includes an annular groove 301 and a communicating groove 302. The annular groove 301 is annular, and the communicating groove 302 communicates with the annular groove 301 and the liquid collecting hole 300b respectively. In one example, the liquid collecting hole 300b is coaxially arranged with the annular groove 301, the communicating groove 302 extends along the radial direction of the annular groove 301, and both ends of the communicating groove 302 communicate with the annular groove 301.

[0087] In the above embodiment, the area enclosed by the annular groove 301 is equivalent to forming a bump, that is, the bearing block 300c for bearing the blood pump 2000, and the upper surface of the bearing block 300c constitutes the bearing surface 300d. In some examples, the communicating groove 302 may not be provided, and the liquid collecting hole 300b penetrates through the bottom of the annular groove 301. At this time, the liquid flows along the blood pump 2000 to the bearing surface 300d of the bearing block 300c, and flows along the bearing surface 300d to the edge, and then flows down from the edge of the bearing surface 300d and converges into the annular groove 301, and finally flows out from the liquid collecting hole 300b at the bottom of the annular groove 301. In some examples, both the annular groove 301 and the communicating groove 302 are provided, and the communicating groove 302 cuts the bearing block 300c into two parts, and each part is semi-cylindrical.

[0088] Preferably, in order to facilitate the liquid in the liquid collecting groove 300a to flow to the liquid collecting hole 300b, the bottom of the liquid collecting groove 300a is inclined, and the liquid collecting hole 300b is located at the lowest position of the bottom. Such a setting makes the bottom of the liquid collecting groove 300a form a diversion inclined plane to facilitate the liquid in the liquid collecting groove 300a to flow to the liquid collecting hole 300b under the action of gravity.

[0089] Specifically, the bottom of the liquid collecting groove 300a is arranged in a funnel shape to realize the inclined setting of the bottom of the liquid collecting groove 300a. In addition, the bottom of the liquid collecting groove 300a can also be set as an inclined plane inclined in the up-down direction.

[0090] Along the radial direction of the liquid collecting hole 300b and in the direction close to the central axis of the liquid collecting hole 300b, the annular groove 301 gradually inclines downward to better guide the liquid to flow to the liquid collecting hole 300b.

[0091] Specifically, the bearing member 300 includes a bearing platform 310 and a support rod 320. The liquid collecting groove 300a is arranged at one end of the bearing platform 310 facing away from the support rod 320, and one end of the liquid collecting hole 300b away from the liquid collecting groove 300a penetrates to one end of the support rod 320 away from the bearing platform 310.

[0092] The overall shapes of the bearing platform 310 and the support rod 320 can both be cylindrical, and the two are coaxially arranged. The diameter of the bearing platform 310 is larger than the diameter of the support rod 320, and the height of the bearing platform 310 is smaller than the height of the support rod 320. In other examples, the bearing platform 310 and the support rod 320 can also be square or irregular in shape, etc.

[0093] Please refer to Figure 1 Figure 1 , in an embodiment of the present invention, in order to facilitate the positioning of the blood pump 2000, the bearing surface 300d is provided with a plurality of positioning protrusions 310c, and the plurality of positioning protrusions 310c are arranged in an annular array to clamp and position the blood pump 2000. Specifically, the positioning protrusions 310c are provided on the bearing block 300c, and the positioning protrusions 310c can be arc-shaped to better match the circular shape of the blood pump 2000 and achieve better contact and limit. The number of positioning protrusions 310c on each bearing block 300c can be the same or different, and no specific limitation is made here.

[0094] Through the above technical solution, the blood oozing from the joint of the ventricular connector 3000 and the inlet pipe 2100 of the blood pump 2000 can first flow into the liquid collection tank 300a under the action of gravity, then flow to the liquid collection hole 300b and be collected through the container below the liquid collection hole 300b. Such a setting facilitates the collection of the blood oozing from the joint of the ventricular connector 3000 and the inlet pipe 2100 of the blood pump 2000. Moreover, by bearing the blood pump 2000 through the bearing block 300c, the blood pump 2000 is spaced from the bottom of the liquid collection tank 300a, without interfering with the collection of the blood oozing from the joint of the ventricular connector 3000 and the inlet pipe 2100 of the blood pump 2000 through the liquid collection tank 300a and the liquid collection hole 300b.

[0095] Please refer to Figure 2 and Figure 3 Figure 2 , in an embodiment of the present invention, the detection tooling 1000 further includes a pressurizing member 600 and a pressure detection member 700. The pressurizing member 600 is communicated with the liquid storage cavity 200a to adjust the pressure of the liquid storage cavity 200a, and the pressure detection member 700 is communicated with the liquid storage cavity 200a to detect the pressure in the liquid storage cavity 200a.

[0096] The pressurizing member 600 can be a pressurizing airbag, a pressurizing pump or other pressurizing elements, and the pressure detection member 700 can be a pressure gauge, a pressure sensor or other pressure detection elements, and no specific limitation is made here.

[0097] Through the above technical solution, by the combined use of the pressurizing member 600 and the pressure detection member 700, it is possible to both detect the liquid pressure in the liquid storage cavity 200a and adjust the liquid pressure in the liquid storage cavity 200a. Therefore, the liquid pressure in the liquid storage cavity 200a can be adjusted to be consistent with the pressure of the human heart, that is, 120 mmHg high, and further the simulation detection can be made more suitable for actual applications.

[0098] Please refer to Figure 2 and Figure 3, for the convenience of accessing other measuring components, in an embodiment of the present invention, the main body 200 is further provided with a spare interface 200e communicating the liquid storage cavity 200a and the external environment, and the main body 200 is provided with a spare plug 200f cooperating with the spare interface 200e. With such a setting, other measuring components, such as temperature sensors, liquid level sensors, etc., can be accessed through the spare interface 200e. Optionally, the spare interface 200e is arranged close to the bottom of the liquid storage cavity 200a.

[0099] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0100] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A detection tooling for detecting the sealing performance between a blood pump and a ventricular connector, wherein the ventricular connector is sleeved on the inlet pipe of the blood pump, and a connection seam is formed between the ventricular connector and the inlet pipe; Characterized in that, The detection tooling includes: A main body part, which has a liquid storage cavity and a liquid outlet that communicate with each other; A valve body, arranged at the liquid outlet, and the valve body can close or open the liquid outlet; A seal, which is sealingly connected to the main body part. The seal has a relief hole for inserting the inlet pipe, and the position of the relief hole corresponds to that of the liquid outlet. When the inlet pipe is inserted into the liquid outlet, the seal can sealingly abut against the ventricular connector and make the relief hole communicate with the connection seam; and A collection device, which can receive the liquid flowing out from the connection seam.

2. The detection tooling according to claim 1, Characterized in that, The valve body includes a valve core, and the valve core can move relative to the main body part along the through direction of the liquid outlet.

3. The detection tooling according to claim 2, Characterized in that, The valve body further includes a housing, which is installed on the main body part. The housing is located in the liquid storage cavity and covers the liquid outlet; A groove is provided on the side of the housing facing the liquid outlet, and the housing is also provided with at least one liquid inlet, and the liquid inlets communicate with the liquid storage cavity and the groove respectively; The valve core is located in the groove and is movably connected to the groove, so that the liquid inlet can communicate with the liquid outlet through the groove.

4. The detection tooling according to claim 3, Characterized in that, An elastic reset member is provided between the valve core and the bottom wall of the groove, and the elastic reset member has a tendency to make the valve core move towards the liquid outlet.

5. The detection tooling according to claim 3, Characterized in that, The seal penetrates through the liquid outlet and is in sealing contact with the hole wall of the liquid outlet. One end of the seal is in sealing contact with the housing, and the other end of the seal is located outside the main body part and can sealingly abut against the ventricular connector.

6. The detection tooling according to any one of claims 1 to 5, Characterized in that, The collection device includes a carrier, and the carrier has a carrier surface for carrying the blood pump; The detection tooling further includes a base, and the carrier is movably connected to the base so as to be able to move along the through direction of the liquid outlet, so that the inlet pipe can be inserted into or withdrawn from the liquid outlet, and the valve body can be pushed open to open the liquid outlet when the inlet pipe is inserted into the liquid outlet.

7. The detection tooling according to claim 6, Characterized in that, The base is provided with an adjustment hole, and the opening direction of the adjustment hole is along the through direction of the liquid outlet. The adjustment hole is a threaded hole, and the carrier has a support rod, and the support rod is provided with an external thread to cooperate with the adjustment hole.

8. The detection tooling according to claim 6, Characterized in that, The bearing surface is provided with a liquid collecting groove and liquid collecting holes. The bottom of the liquid collecting groove is inclined, and the liquid collecting holes are located at the lowest position of the bottom of the groove; and / or, The bearing surface is provided with a plurality of positioning protrusions. The plurality of positioning protrusions can surround the blood pump and can clamp the blood pump.

9. The detection tooling according to claim 6, characterized in that The main body portion includes a liquid storage tank and a fixing seat. The liquid storage tank forms the liquid storage cavity. The liquid storage cavity is open, the fixing seat seals and covers the opening, the fixing seat is provided with the liquid outlet, and the fixing seat is installed on the base.

10. The detection tooling according to claim 1, characterized in that The detection tooling further includes a pressurizing member and a pressure detecting member. The pressurizing member is communicated with the liquid storage cavity to adjust the pressure in the liquid storage cavity, and the pressure detecting member is communicated with the liquid storage cavity to detect the pressure in the liquid storage cavity; and / or, the main body portion is further provided with a spare interface communicating with the liquid storage cavity, and the main body portion is provided with a spare plug cooperating with the spare interface.

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