CN219552099U - Conveying pipe performance test tool and performance test system - Google Patents

Abstract

The utility model relates to a conveying pipe performance testing tool and a performance testing system, wherein at least one in-vivo simulation cavity is formed in a cavity mold of the conveying pipe performance testing tool, a pipe body fixer comprises a device frame and a fixing part, a pipe body fixing channel is formed in the fixing part, the pipe body fixing channel is used for fixing a conveying pipe to be tested, the conveying pipe to be tested is used for penetrating a testing wire, the fixing part is movably assembled on the device frame, and the fixing part can rotate relative to the device frame so as to adjust the relative angle of the pipe body fixing channel relative to any cavity section in the in-vivo simulation cavity. Through the performance test fixture, the test is not required to be carried out after the test wire and the conveying pipe to be tested are made into finished products, and the evaluation and the inspection of the raw materials of the test wire and the conveying pipe to be tested are facilitated during early shipment. Meanwhile, the performance testing tool only needs to be used for a common tension machine in a laboratory, other equipment is not needed to be additionally arranged, the whole performance testing tool is simple in structure, convenient to operate and accurate in testing result.

Description

Conveying pipe performance test tool and performance test system

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a performance testing tool and a performance testing system for evaluating smoothness of an inner wall of a conveying pipe of basket products.

Background

The interventional therapy is a minimally invasive therapy performed by using modern high-tech means, and special precise instruments are introduced into a human body under the guidance of medical imaging equipment to diagnose and locally treat focuses in the human body. The minimally invasive stone extraction of biliary tract stones and kidney stones is an important item of non-vascular interventional treatment, and the stone extraction can be used for various medical instruments such as stone extraction basket, three-jaw basket, interception basket and the like.

The basket type instrument generally comprises a push-pull handle, an outer tube, a test wire, a stone taking end and the like, and in clinical practice, the test wire drives the stone taking end to complete the stone taking task through the push-pull handle. After the instrument passes through a complicated internal cavity, the friction force between the test wire and the inner wall of the conveying pipe outside the test wire is obviously increased, the pushing test wire action of the push-pull handle and the recovery test wire action are easy to be blocked, and after the test wire and the pipe are pushed and recovered for many times, the test wire and the pipe can be distorted, so that the pushing and recovery force value is further increased, and the stone extraction can not be completed in severe cases. Thus, the smoothness of the inner wall of the delivery tube is critical to the success of the procedure.

Therefore, based on the technical problem that push-pull handle pushing and recovery are difficult in clinical use of the conventional basket type instrument, a test system for evaluating the simulation usability of the basket type product, which is easy to operate, high in test speed and accurate in test result, is needed, and the technical problem to be solved is needed.

Disclosure of Invention

Based on this, it is necessary to provide a performance testing tool and a performance testing system for the above-mentioned technical problems.

The utility model provides a conveyer pipe performance test fixture for the smoothness of test conveyer pipe, including cavity way mould, body fixer, test wire and test wire fixed part, the inside of cavity way mould has seted up at least one internal simulation cavity way, is used for simulating the vascular environment of human or animal body;

the pipe body fixer comprises a device frame and a fixing part, wherein a pipe body fixing channel for a conveying pipe to be detected to penetrate through is axially formed in the fixing part, and the fixing part is movably assembled on the device frame and is used for rotating relative to the device frame so as to adjust the relative angle of the pipe body fixing channel relative to any cavity section in the internal simulation cavity;

the test wire fixing component is used for clamping the traction end of the test wire, and the test wire is used for entering and exiting the in-vivo simulation cavity through the conveying pipe to be tested.

In one embodiment, the method further comprises: and the conveying pipe clamping component is used for clamping the fixing component, so as to indirectly clamp the conveying pipe to be tested.

In one embodiment, the delivery tube gripping member is configured to be driven by a pulling force machine and/or the test wire securing member is configured to be driven by a pulling force machine.

In one embodiment, the test wire fixing member and the conveying pipe clamping member are disposed along a traction direction of the conveying pipe to be tested, and the test wire fixing member is located at an end of the conveying pipe to be tested in the traction direction.

In one embodiment, a distance between the delivery tube gripping member and the test wire fixing member is 20mm or more.

In one embodiment, the method further comprises: the test stand has an operating table top, and at least one of the cavity die and the pipe body fixer is arranged on the operating table top of the test stand.

In one embodiment, the conveying pipe to be tested is adhered and fixed in the pipe body fixing channel.

In one embodiment, the length of the conveying pipe to be detected exposed out of the in-vivo simulation cavity is greater than or equal to 10mm.

In one embodiment, the length of the test wire exposed to the delivery tube to be tested is greater than or equal to 30mm.

A performance testing system, the performance testing system comprising:

the performance test tool;

and the pulling machine is used for driving the test wire to reciprocate relative to the inner cavity of the conveying pipe to be tested.

In the performance testing tool and the performance testing system, through the performance testing tool, the test after the test wire and the conveying pipe to be tested are made into finished products is not needed, and the evaluation and the inspection of the raw materials of the test wire and the conveying pipe to be tested are facilitated during the early-stage shipment. Meanwhile, the performance testing tool only needs to be used for a common tension machine in a laboratory, other equipment is not needed to be additionally arranged, the whole performance testing tool is simple in structure, convenient to operate, accurate in testing result and easy to popularize into other similar medical instruments.

Drawings

FIG. 1 is a schematic diagram illustrating a performance testing system according to an embodiment of the present utility model.

Reference numerals:

A. a conveying pipe to be tested; B. testing wires;

1000. a cavity mold; 2000. a tube body fixer; 3000. a delivery tube gripping member; 4000. a test wire fixing member; 5000. a test bed;

1000a, simulating a cavity in a body;

2100. a device frame; 2200. a fixing member; 2000a, a tube body fixing channel;

3000a, a first clamping gap;

4000a, a second clamping gap;

5000a, an operation table surface.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1, fig. 1 is a schematic view illustrating a use state of a performance test system according to an embodiment of the present utility model, and an embodiment of the present utility model provides a performance test fixture, which includes a cavity mold 1000, a pipe body holder 2000, a test wire B, and a test wire fixing member 4000.

One or more in-vivo simulation channels 1000a are provided in the channel mold 1000, the in-vivo simulation channels 1000a are used for simulating natural channels in a human body or an animal body, such as a vascular environment, therefore, the in-vivo simulation channels 1000a can be constructed into one or more bending sections with different bending degrees according to test requirements, the bending sections with different degrees are used for simulating different in-vivo environments, the channel mold 1000 and the inner walls of the in-vivo simulation channels 1000a can be constructed by adopting materials capable of simulating vascular characteristics, and a person skilled in the art can select materials such as silica gel according to the test requirements, so that the method is not limited.

The tube holder 2000 includes a device frame 2100 and a fixing member 2200, the device frame 2100 serves as a fixing base of the fixing member 2200, and the fixing member 2200 is movably mounted on the device frame 2100 such that the fixing member 2200 can be rotated or moved with respect to the device frame 2100, thereby adjusting a relative angle of the tube fixing channel 2000a with respect to any channel section of the in-vivo simulation channel 1000a. The fixing member 2200 is provided with a pipe fixing passage 2000a in an axial direction for sheathing and fixing the transfer pipe a to be measured. The test wire fixing component 4000 is used for clamping the traction end of the test wire B, and the test wire B is arranged in the conveying pipe A to be tested in a penetrating mode and enters and exits the in-vivo simulation cavity 1000a through the conveying pipe A to be tested.

That is, during the experiment, the in-vivo simulation channel 1000a of the channel mold 1000 is in a stationary state, the channel mold 1000 is used to simulate a vascular environment in a human or animal body, and then the assembled state such as the angle, the orientation, and the position of the fixing member 2200 is adjusted by the rotation or the movement of the fixing member 2200 with respect to the device frame 2100, so that the tube fixing channel 2000a of the fixing member 2200 can form a relative angle change with respect to the in-vivo simulation channel 1000a, wherein, since the in-vivo simulation channel 1000a can be constructed as one or more curved sections with different bending degrees according to the experiment requirement, when the fixing member 2200 rotates or moves with respect to the device frame 2100, in fact, the tube fixing channel 2000a of the fixing member 2200 can form different relative angles with respect to any designated channel section in the in-vivo simulation channel 1000a, thereby adjusting different experiment conditions.

With continued reference to fig. 1, in one embodiment, the performance test fixture includes a conveying pipe clamping member 3000, where the conveying pipe clamping member 3000 may be a spring clip, a hydraulic clip, an air pressure clip, or other various components capable of implementing a clamping function, and the conveying pipe clamping member 3000 may be used to clamp the fixing member 2200, thereby clamping the traction end of the conveying pipe a to be tested. In use, the fixing member 2200 first clamps the transfer tube a to be tested, and then the transfer tube clamping member 3000 clamps the fixing member 2200, thereby indirectly clamping the transfer tube a to be tested. The fixing member 2200 may protect the external shape structure of the transfer tube a to be measured based on the tube body fixing passage 2000a with the matched external shape structure, and when the transfer tube clamping member 3000 indirectly clamps the transfer tube a to be measured through the fixing member 2200, since the clamping force of the transfer tube clamping member 3000 is applied to the fixing member 2200 instead of being directly applied to the transfer tube a to be measured, the external shape structure of the transfer tube a to be measured may be ensured, preventing the transfer tube a to be measured from being deformed in the external shape structure due to the application of the clamping force.

The conveying pipe clamping member 3000 may be configured to be driven by a pulling machine when in use, and further, the driving motion of the conveying pipe a to be tested is implemented by the pulling machine, or the conveying pipe clamping member 3000 is a clamping mechanism of the pulling machine, and a person skilled in the art may select the clamping mechanism of the pulling machine as the conveying pipe clamping member 3000, or select a peripheral clamping mechanism as the conveying pipe clamping member 3000 according to the requirement, which is not limited herein.

With continued reference to fig. 1, the test wire fixing member 4000 is configured to clamp the traction end of the test wire B, so that the test wire B and the conveying pipe a to be tested can be driven to move relatively by the cooperation between the conveying pipe clamping member 3000 and the test wire fixing member 4000, that is, the test wire B is driven to movably pass through the conveying pipe a to be tested and axially reciprocate in the conveying pipe a to be tested. The test wire fixing member 4000 may be configured to be driven by a tensile machine when in use, and further, the driving motion of the test wire B is implemented by the tensile machine, or the test wire fixing member 4000 is a clamping mechanism of the tensile machine itself, and a person skilled in the art may select the clamping mechanism of the tensile machine as the test wire fixing member 4000, or select an external clamping mechanism as the test wire fixing member 4000 according to the requirements, which is not limited herein.

The conveying pipe clamping member 3000 and the test wire fixing member 4000 may be arranged in a transverse direction parallel to a horizontal plane, or the conveying pipe clamping member 3000 and the test wire fixing member 4000 may be arranged in a longitudinal direction perpendicular to the horizontal plane, or the conveying pipe clamping member 3000 and the test wire fixing member 4000 may be arranged obliquely in a manner of forming an angle with respect to the horizontal plane, which may be set by those skilled in the art according to actual test requirements, and is not limited herein.

With continued reference to fig. 1, for example, in an unclamped state, the carrier tube clamping member 3000 has a first clamping gap 3000a, the test wire fixing member 4000 has a second clamping gap 4000a, and the test wire fixing member 4000 is located above the carrier tube clamping member 3000, and at this time, the carrier tube clamping member 3000 and the test wire fixing member 4000 are disposed in a longitudinal direction perpendicular to a horizontal plane, such that the first clamping gap 3000a of the carrier tube clamping member 3000 and the second clamping gap 4000a of the test wire fixing member 4000 are longitudinally opposite, and thus, a portion of the wire section of the test wire B and a portion of the tube section of the carrier tube a to be tested are also disposed in a longitudinal direction perpendicular to the horizontal plane. Also, in one of the embodiments, the distance between the delivery tube holding member 3000 and the test wire fixing member 4000 may be 20mm or more, for example, the distance between the delivery tube holding member 3000 and the test wire fixing member 4000 may be maintained at 20mm, 21mm, 22mm, 23mm, 24mm, 25mm, 26mm, 27mm, 28mm, 29mm, 30mm, etc., without limitation.

With continued reference to fig. 1, in one embodiment, the performance test fixture includes a test stand 5000, where the test stand 5000 has an operation table 5000a, so that the cavity mold 1000 and the pipe holder 2000 may be disposed on the operation table 5000a of the test stand 5000 when a test is performed, and a reference positioning is formed on the cavity mold 1000 and the pipe holder 2000 by using the operation table 5000a, so that the cavity mold 1000 and the pipe holder 2000 can cooperate to position the test wire B and the conveying pipe a to be tested, and a stable test condition is provided.

In one embodiment, the conveying pipe a to be tested may be fixed in the pipe fixing channel 2000a of the fixing component 2200 by adopting a bonding, fastening connection, threaded connection, or other manners, so that the pipe fixing channel 2000a of the fixing component 2200 may form a stable positioning for the conveying pipe a to be tested, and when the test wire B is passed through the conveying pipe a to be tested in a reciprocating manner, the conveying pipe a to be tested may maintain a relatively fixed state, thereby meeting the test requirement.

In one embodiment, the length of the tube length of the conveying tube a to be tested exposed to the in-vivo simulation channel 1000a is greater than or equal to 10mm, for example, the length of the tube length of the conveying tube a to be tested exposed to the in-vivo simulation channel 1000a is 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, etc., the length of the testing wire B exposed to the conveying tube a to be tested is greater than or equal to 30mm, for example, the length of the wire length of the testing wire exposed to the conveying tube a to be tested is 30mm, 32mm, 34mm, 36mm, 38mm, 40mm, 42mm, 44mm, 46mm, 48mm, 50mm, etc.

Because the test wire B and the conveying pipe A to be tested have size differences, the difficulty degree of pushing and back drawing after assembly is inconsistent easily, and therefore, through the performance test tool, the test is not required until the test wire B and the conveying pipe A to be tested are finished and then tested, and the evaluation and the test of the raw materials of the test wire B and the conveying pipe A to be tested are facilitated during early shipment. Meanwhile, the performance testing tool only needs to be used for a common tension machine in a laboratory, other equipment is not needed to be additionally arranged, the whole performance testing tool is simple in structure, convenient to operate, accurate in testing result and easy to popularize into other similar medical instruments.

With continued reference to fig. 1, the utility model provides a performance testing system, which comprises the performance testing tool and a pulling machine, wherein the pulling machine is used for driving a test wire B to reciprocate relative to a tube cavity of a conveying tube A to be tested, and the pulling machine has a main function of recording a force value in the pushing and recovering process of the test wire B from the conveying tube A to be tested. In the test, the conveying pipe a to be tested and the pipe body fixer 2000 can be connected and fixed by using glue, and the pipe body fixer 2000 is clamped by using the conveying pipe clamping component 3000, so that the conveying pipe a to be tested is indirectly clamped without deforming the conveying pipe a to be tested. After the test wire B penetrates into the conveying pipe A to be tested, one end of the test wire B penetrates through the internal simulation cavity 1000a, the conveying pipe A to be tested exceeds the edge of the internal simulation cavity 1000a by 10mm, the length of the test wire B exceeds the conveying pipe A to be tested by 30mm, one end of the conveying pipe A to be tested is connected with a pulling machine through a conveying pipe clamping part 3000, the conveying pipe clamping part 3000 clamps a pipe body fixer 2000, the test wire fixing part 4000 clamps the test wire B, and the distance between the conveying pipe clamping part 3000 and the test wire fixing part 4000 is 20mm.

Setting the running speed of the tension machine, firstly enabling the test wire B to be slowly drawn back by 20mm from the conveying pipe A to be tested, pushing 20mm again to return to the starting point, circularly testing for 3 times, and recording the maximum force value in the three testing processes. Then the pipe body fixer 2000180 degrees can be rotated to enable the conveying pipe A to be tested to twist at a certain angle, then the test wire B is repeatedly pulled back from the conveying pipe A to be tested for 20mm, then 20mm is pushed back to the starting point, the cyclic test is carried out for 3 times, the maximum force value in the three test processes is recorded, and the magnitude of the force value can represent the pushing and pulling difficulty degree of the handle of the basket type products.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. The conveying pipe performance test tool is used for testing the smoothness of a conveying pipe to be tested and is characterized by comprising a cavity mold, a pipe body fixer, a test wire and a test wire fixing part, wherein at least one in-vivo simulation cavity is formed in the cavity mold and used for simulating the vascular environment of a human body or an animal body;

the pipe body fixer comprises a device frame and a fixing part, wherein a pipe body fixing channel for a conveying pipe to be detected to penetrate through is axially formed in the fixing part, and the fixing part is movably assembled on the device frame and is used for rotating relative to the device frame so as to adjust the relative angle of the pipe body fixing channel relative to any cavity section in the internal simulation cavity;

the test wire fixing component is used for clamping the traction end of the test wire, and the test wire is used for entering and exiting the in-vivo simulation cavity through the conveying pipe to be tested.

2. The carrier pipe performance test fixture of claim 1, further comprising: and the conveying pipe clamping component is used for clamping the fixing component, so as to indirectly clamp the conveying pipe to be tested.

3. The performance test fixture of claim 2, wherein the delivery tube gripping member is configured to be driven by a pulling machine and/or the test wire securing member is configured to be driven by a pulling machine.

4. A performance testing tool according to claim 3, wherein the test wire fixing member and the conveying pipe clamping member are disposed along a traction direction of the conveying pipe to be tested, and the test wire fixing member is located at an end of the conveying pipe to be tested in the traction direction.

5. The performance test fixture of claim 3, wherein a distance between the delivery tube clamping member and the test wire fixing member is 20mm or more.

6. The performance testing tool of claim 1, further comprising: the test stand has an operating table top, and at least one of the cavity die and the pipe body fixer is arranged on the operating table top of the test stand.

7. The performance test fixture of claim 1, wherein the delivery tube to be tested is adhesively secured within the tube body securing channel.

8. The performance test tool according to claim 1, wherein the length of the conveying pipe to be tested exposed to the in-vivo simulation cavity is greater than or equal to 10mm.

9. The performance test fixture of claim 1, wherein the length of the test wire exposed to the delivery tube to be tested is greater than or equal to 30mm.

10. A performance testing system, the performance testing system comprising:

the performance testing tool of any one of claims 1-9;

and the pulling machine is used for driving the test wire to reciprocate relative to the inner cavity of the conveying pipe to be tested.