Fatigue testing device for medical anchor

Abstract

The utility model discloses a medical anchor fatigue testing device, which relates to the technical field of medical instruments and comprises a base, a first moving structure and a second moving structure. The first moving structure and the second moving structure are movably installed on the base and arranged in a spaced mode, and the first moving structure and the second moving structure can get close to each other and get away from each other. The two opposite ends of the first moving structure and the second moving structure are fixedly connected with a first anchor and a second anchor respectively, a locking line is connected between the first anchor and the second anchor, and the end, away from the second moving structure, of the first moving structure is connected with a tension measuring instrument. When the second moving structure is fixed, the medical anchor fatigue testing device is used for pulling the first moving structure through the tension measuring instrument so as to detect the tensile strength of the first anchor and the second anchor. The device can test the anti-fatigue performance of the anchor, ensures that the anchor meets the use requirements during implantation, and reduces the possibility of postoperative complications.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a medical anchor fatigue testing device. Background Technology

[0002] In valve repair surgery, anchors are key implantation devices for contracting the valve annulus tissue, and their mechanical properties directly affect postoperative recovery and long-term stability. During use, anchors need to be screwed into the valve annulus tissue for fixation. When the valve annulus contracts, multiple anchors are pulled together to bring the annulus tissue closer together. During postoperative recovery, the anchors need to withstand the tensile load of the locking suture and the cyclic load generated by human movement. If the anchors have poor fatigue resistance, the fixation between the anchors and the valve annulus tissue can easily loosen, fall off, or even break, affecting the valve repair outcome. Therefore, there is an urgent need for a device that can test the fatigue resistance of anchors. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, the present invention provides a medical anchor fatigue testing device.

[0004] To achieve the above objectives, the present invention provides a medical anchor fatigue testing device, comprising:

[0005] Base, first movable structure, and second movable structure;

[0006] The first movable structure and the second movable structure are respectively movably mounted on the base, and the two are spaced apart. The first movable structure and the second movable structure can move closer to each other and further away from each other.

[0007] The two ends of the first movable structure and the second movable structure facing each other are used to fix the first anchor and the second anchor respectively. A locking line is connected between the first anchor and the second anchor. A tensile measuring instrument is connected to the end of the first movable structure away from the second movable structure.

[0008] When the second movable structure is fixed, the medical anchor fatigue testing device is used to pull the first movable structure through the tensile measuring instrument to detect the tensile strength of the first anchor and the second anchor.

[0009] Preferably, the first movable structure includes a first fixing member and a first movable member. One end of the first fixing member is detachably connected to the first movable member, and the other end is used to install the first anchor. The first movable member is movably connected to the base to allow the first movable member to move axially.

[0010] The first movable component has protruding connecting structures on both sides, which are used to connect to the tensile measuring instrument.

[0011] Preferably, the second moving structure includes a second fixing member, a second moving member, and a control knob;

[0012] One end of the second fixing member is detachably connected to the second moving member, and the other end is used to install the second anchor.

[0013] The second movable component is mounted on the top of the base and extends axially through the control knob. The control knob is threadedly connected to the second movable component and is axially limited to the base. The control knob is used to control the axial movement of the second movable component.

[0014] Preferably, the base includes a first mounting part and a second mounting part, wherein the first mounting part is used to mount the first movable structure and the second mounting part is used to mount the second movable structure;

[0015] The first mounting part includes a first support platform and a first limiting structure. The first limiting structure is detachably mounted on the top of the first support platform. The first support platform and the first limiting structure are used to clamp the first moving part. The connecting structure extends from both sides of the first support platform and the first limiting structure.

[0016] Preferably, the second mounting part includes a second support platform, a second limiting structure and a third limiting structure, wherein the second limiting structure and the third limiting structure are detachably disposed on the top of the second support platform and together clamp the second moving part;

[0017] The second limiting structure is used to circumferentially limit the second moving part, and the third limiting structure is respectively disposed on both sides of the control knob to limit the axial movement of the control knob.

[0018] Preferably, a first sliding groove is provided on the first moving member, and a first limiting hole is provided on the first limiting structure. The first limiting hole is used for the insertion of a first pin. When the first pin is inserted into the first limiting hole, one end of the first pin extends into the first sliding groove. The first pin is used to restrict the circumferential rotation of the first moving member, and the first sliding groove is used to restrict the axial movement distance of the first moving member.

[0019] Preferably, the second moving member includes a limiting part and a threaded part, wherein the limiting part is disposed close to the second fixing member;

[0020] A protruding pin is provided on the circumferential sidewall of the limiting part, a pin groove is provided at the bottom of the second limiting structure or the top of the second support platform, and a thread is provided on the circumferential sidewall of the threaded part.

[0021] When the second movable member is installed on the second mounting part, the second limiting structure and the second support platform clamp the limiting part, the pin is located in the pin groove to restrict the circumferential rotation of the second movable member, the third limiting structure and the second support platform clamp the threaded part, and the control knob is sleeved on the threaded part.

[0022] Preferably, a first slot is provided at one end of the first fixing member facing the second fixing member, and second pins are provided on both sides of the first slot, with the second pins penetrating the first slot radially.

[0023] When the first anchor is installed with the first fastener, the first anchor is located in the first slot, and the second pin passes through the first anchor to axially limit the first anchor.

[0024] A second slot is provided at one end of the second fastener facing the first fastener, and third pins are provided on both sides of the second slot, the third pins penetrating the second slot radially.

[0025] When the second anchor is installed with the second fastener, the second anchor is located in the second slot, and the third pin passes through the second anchor to axially limit the second anchor.

[0026] Preferably, a first groove is provided on the axial sidewall of the connecting structure, the opening of the first groove facing the first fixing member, and the first groove is used to guide the installation of the tensile measuring instrument.

[0027] Preferably, a locking device is provided on the locking line, and a torque meter is connected to the end of the locking device. The medical anchor fatigue testing device is also used to control the rotation of the locking device through the torque meter to pull the first anchor and the second anchor, so as to detect the torsional strength of the first anchor and the second anchor.

[0028] Based on this, the beneficial effects of this utility model are as follows:

[0029] The present invention involves installing a first anchor on a first movable structure and a second anchor on a second movable structure, connected by a locking line. A tensile testing instrument is connected to the first movable structure. By pulling the first movable structure and observing the deformation of the first and second anchors and the reading of the tensile testing instrument, the tensile properties of the first and second anchors are tested. The locking line is also equipped with a locking device, which can be connected to a torque meter at its end. The torque meter can be controlled to rotate and pull the first and second anchors on both sides, thus testing the torsional resistance of the first and second anchors. Attached Figure Description

[0030] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0031] Figure 1 This is a schematic diagram illustrating the structure of a medical anchor fatigue testing device according to one embodiment of the present invention.

[0032] Figure 2 This is a schematic diagram illustrating the structure of the first movable structure according to one embodiment of the present invention.

[0033] Figure 3 This schematic diagram shows an exploded view of the first mounting section structure according to one embodiment of the present invention.

[0034] Figure 4 A schematic diagram illustrating the structure of the second moving structure according to one embodiment of the present invention;

[0035] Figure 5 This schematic diagram illustrates the structure of the second mounting part according to one embodiment of the present invention.

[0036] Explanation of reference numerals in the attached drawings: 10-base, 101-first mounting part, 1011-first support platform, 1012-first limiting structure, 1013-first limiting hole, 102-second mounting part, 1021-second support platform, 1022-second limiting structure, 1023-third limiting structure, 1024-pin groove, 20-first moving structure, 201-first fixing member, 2011-first slot, 2012-second pin, 2 02-First moving part, 2021-First slide groove, 203-Connecting structure, 2031-First groove, 30-Second moving structure, 301-Second fixing part, 3011-Second slot, 3012-Third pin, 302-Second moving part, 3021-Limiting part, 3022-Threaded part, 3023-Pin key, 303-Control knob, 40-First anchor, 50-Second anchor, 60-Locking line, 70-Locking device. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms "a," "the," and "the" as used in the embodiments of this application are also intended to include the plural forms unless the context clearly indicates otherwise.

[0039] It should be understood that although the terms first, second, third, etc., may be used to describe related structures in the embodiments of this application, these related structures should not be limited to these terms. These terms are only used to distinguish related structures from each other.

[0040] Depending on the context, the word "if" as used here can be interpreted as "when" or "when". Similarly, depending on the context, the phrase "if determined" can be interpreted as "when determined" or "when (the condition or event of the statement) is detected".

[0041] It should be noted that the directional terms such as "upper," "lower," "left," and "right" described in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should also be understood that when it is mentioned that an element is formed "upper" or "lower" of another element, it can not only be formed directly "upper" or "lower" of the other element, but also indirectly "upper" or "lower" of the other element through an intermediate element.

[0042] Figure 1 This schematic diagram illustrates the structure of a medical anchor fatigue testing device according to one embodiment of the present invention, as shown below. Figure 1 As shown, the present invention provides a medical anchor fatigue testing device, comprising:

[0043] Base 10, first movable structure 20 and second movable structure 30;

[0044] The first movable structure 20 and the second movable structure 30 are respectively movably mounted on the base 10, and the two are spaced apart, so that the first movable structure 20 and the second movable structure 30 can move closer to each other and further away from each other;

[0045] The two ends of the first movable structure 20 and the second movable structure 30 facing each other are used to fix the first anchor 40 and the second anchor 50 respectively. The first anchor 40 and the second anchor 50 are connected by a locking line 60. The end of the first movable structure 20 away from the second movable structure 30 is connected to a tensile measuring instrument (not shown in the figure).

[0046] When the second movable structure 30 is fixed, the medical anchor fatigue testing device is used to pull the first movable structure 20 by a tensile measuring instrument to test the tensile strength of the first anchor 40 and the second anchor 50.

[0047] Specifically, the first anchor 40 and the second anchor 50 have the same structure and shape.

[0048] The first anchor 40 and the second anchor 50 are respectively installed on the first moving structure 20 and the second moving structure 30 to simulate the scenario where the first anchor 40 and the second anchor 50 are implanted and fixed in the valve annulus tissue. At the same time, by controlling the first moving structure 20 to move away from the second moving structure 30, the scenario where the first anchor 40 and the second anchor 50 are pulled by the locking line 60 can be simulated. By observing the deformation of the first anchor 40 and the second anchor 50 and the reading on the tensile tester, the tensile strength of the first anchor 40 and the second anchor 50 can be determined, and the fatigue test can be completed.

[0049] Furthermore, Figure 2 This diagram schematically illustrates the structure of the first movable structure according to one embodiment of the present invention. Figure 3 This diagram schematically illustrates an exploded view of the first mounting section structure according to one embodiment of the present invention. Figure 4 This schematic diagram illustrates the structure of the second movable structure according to one embodiment of the present invention. Figure 5 This schematic diagram illustrates the structure of the second mounting part according to one embodiment of the present invention, as shown below. Figure 2-5 As shown:

[0050] The first movable structure 20 includes a first fixing member 201 and a first movable member 202. One end of the first fixing member 201 is detachably connected to the first movable member 202, and the other end is used to install the first anchor 40. The first movable member 202 is movably connected to the base 10 so that the first movable member 202 can move axially.

[0051] A protruding connecting structure 203 is provided on both sides of the first moving part 202, and the connecting structure 203 is used to connect with the tensile measuring instrument.

[0052] Specifically, the base 10 includes a first mounting part 101 for mounting the first movable structure 20. The first mounting part 101 includes a first support platform 1011 and a first limiting structure 1012. The first limiting structure 1012 is detachably mounted on the top of the first support platform 1011 and can be connected using screws.

[0053] The first moving part 202 is axially inserted between the first support platform 1011 and the first limiting structure 1012, so that the two can clamp the first moving part 202. At the same time, when the first support platform 1011 and the first limiting structure 1012 clamp the first moving part 202, the connecting structure 203 can extend from both sides for connection of the tensile measuring instrument.

[0054] In use, by connecting the tension measuring instrument to the connecting structure 203 and placing it away from the second moving structure 30, the first moving structure 20 is moved axially by pulling the tension measuring instrument, thereby achieving the pulling of the first anchor 40 and the second anchor 50.

[0055] Furthermore, the second movable structure 30 includes a second fixing member 301, a second movable member 302, and a control knob 303. One end of the second fixing member 301 is detachably connected to the second movable member 302, and the other end is used to install the second anchor 50.

[0056] The second movable component 302 is installed on the top of the base 10 and axially passes through the control knob 303. The control knob 303 is threadedly connected to the second movable component 302 and axially limited to the base 10. The control knob 303 is used to control the axial movement of the second movable component 302.

[0057] The base 10 also includes a second mounting part 102, which is used for mounting the second movable structure 30. The second mounting part 102 includes a second support platform 1021, a second limiting structure 1022 and a third limiting structure 1023. The second limiting structure 1022 and the third limiting structure 1023 are detachably mounted on the top of the second support platform 1021 and together clamp the second movable part 302.

[0058] The second limiting structure 1022 is used to circumferentially limit the second moving part 302, and the third limiting structure 1023 is respectively provided on both sides of the control knob 303 to limit the axial movement of the control knob 303.

[0059] Specifically, the second moving member 302 includes a limiting part 3021 and a threaded part 3022, with the limiting part 3021 disposed close to the second fixing member 301;

[0060] A protruding pin 3023 is provided on the circumferential side wall of the limiting part 3021, a pin groove 1024 is provided at the bottom of the second limiting structure 1022 or the top of the second support platform 1021, and a thread is provided on the circumferential side wall of the threaded part 3022.

[0061] When the second moving part 302 is installed on the second mounting part 102, the second limiting structure 1022 and the second support platform 1021 clamp the limiting part 3021, the pin 3023 is located in the pin groove 1024 to restrict the circumferential rotation of the second moving part 302, the third limiting structure 1023 and the second support platform 1021 clamp the threaded part 3022, and the control knob 303 is sleeved on the threaded part 3022.

[0062] When the control knob 303 is rotated, its axial movement is restricted by the third limiting structure 1023 at both ends because it is threadedly connected to the threaded part 3022. The second moving part 302 is restricted to circumferential rotation by the key 3023 and the groove 1024, thereby causing the second moving part 302 to move axially, thereby adjusting the distance between the first moving structure 20 and the second moving structure 30, thereby realizing the installation of the first anchor 40 and the second anchor 50, and keeping the locking line 60 between them in a straight state.

[0063] In the scheme of this application, the tensile test can be performed by controlling the movement of the first moving structure 20 to pull the first anchor 40 and the second anchor 50, or by controlling the movement of the second moving structure 30.

[0064] When the first moving structure 20 is moved, the second moving structure 30, being a threaded control mechanism, can fix the second anchor 50, thus enabling pulling. However, when the second moving structure 30 is moved, the first moving structure 20 needs to be fixed. The fixing method is as follows:

[0065] A first sliding groove 2021 is provided on the first moving member 202, and a first limiting hole 1013 is provided on the first limiting structure 1012. The first limiting hole 1013 is used for the insertion of the first pin (not shown in the figure). When the first sliding groove 2021 is set to a hole shape, when the first pin is inserted into the first limiting hole 1013 and extends into the first sliding groove 2021, the first pin can fix the first moving member 202 to the first mounting part 101. Therefore, when the second moving structure 30 is pulled, the first anchor 40 will not move.

[0066] Meanwhile, the first slide groove 2021 can also be set as a long strip with a certain length. This length is related to the range of tensile force that the first anchor 40 and the second anchor 50 are subjected to in actual use. By limiting the maximum tensile force, when the first moving part 202 is pulled to move, the first pin moves along the first slide groove 2021 and contacts the end of the first slide groove 2021 near the second moving structure 30. In the process of not being able to pull the first moving part 202 further, neither the first anchor 40 nor the second anchor 50 is deformed. Therefore, it is considered that the tensile performance of the first anchor 40 and the second anchor 50 meets the usage requirements.

[0067] Furthermore, a first slot 2011 is provided at one end of the first fixing member 201 facing the second fixing member 301, and second pins 2012 are provided on both sides of the first slot 2011, with the second pins 2012 radially penetrating the first slot 2011;

[0068] When the first anchor 40 is installed with the first fastener 201, the first anchor 40 is located in the first slot 2011, and the second pin 2012 passes through the first anchor 40 to axially limit the first anchor 40, thus realizing the installation of the first anchor 40.

[0069] Similarly, a second slot 3011 is provided at one end of the second fastener 301 facing the first fastener 201, and a third pin 3012 is provided on both sides of the second slot 3011, with the third pin 3012 radially penetrating the second slot 3011.

[0070] When the second anchor 50 is installed with the second fastener 301, the second anchor 50 is located in the second slot 3011, and the third pin 3012 passes through the second anchor 50 to axially limit the second anchor 50, thus achieving the fixation of the second anchor 50.

[0071] Furthermore, a first groove 2031 is provided on the axial sidewall of the connecting structure 203, the opening of the first groove 2031 faces the first fixing member 201, and the first groove 2031 is used to guide the installation of the tensile measuring instrument.

[0072] Furthermore, a locking device 70 is provided on the locking line 60. The locking device 70 can rotate and pull the first anchor 40 and the second anchor 50 on both sides closer to each other. By connecting a torque meter (not shown in the figure) to the end of the locking device 70, the first anchor 40 and the second anchor 50 are pulled by controlling the torque meter or the locking device 70 to observe their deformation state and the torque meter reading to complete the test.

[0073] In summary, the medical anchor fatigue testing device of this application can be used to test the tensile and torsional properties of the first anchor 40 and the second anchor 50, ensuring that the fatigue resistance of the first anchor 40 and the second anchor 50 used for valve annulus repair meets the requirements for use and reducing the possibility of postoperative complications.

[0074] The above description is merely a preferred embodiment of this application. Those skilled in the art should understand that the scope of disclosure in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A medical anchor fatigue testing device, characterized in that, include: Base, first movable structure, and second movable structure; The first movable structure and the second movable structure are respectively movably mounted on the base, and the two are spaced apart. The first movable structure and the second movable structure can move closer to each other and further away from each other. The two ends of the first movable structure and the second movable structure facing each other are used to fix the first anchor and the second anchor respectively. A locking line is connected between the first anchor and the second anchor. A tensile measuring instrument is connected to the end of the first movable structure away from the second movable structure. When the second movable structure is fixed, the medical anchor fatigue testing device is used to pull the first movable structure through the tensile measuring instrument to detect the tensile strength of the first anchor and the second anchor.

2. The medical anchor fatigue testing device according to claim 1, characterized in that, The first movable structure includes a first fixing member and a first movable member. One end of the first fixing member is detachably connected to the first movable member, and the other end is used to install the first anchor. The first movable member is movably connected to the base to allow the first movable member to move axially. The first movable component has protruding connecting structures on both sides, which are used to connect to the tensile measuring instrument.

3. The medical anchor fatigue testing device according to claim 2, characterized in that, The second moving structure includes a second fixing member, a second moving member, and a control knob; One end of the second fixing member is detachably connected to the second moving member, and the other end is used to install the second anchor. The second movable component is mounted on the top of the base and extends axially through the control knob. The control knob is threadedly connected to the second movable component and is axially limited to the base. The control knob is used to control the axial movement of the second movable component.

4. The medical anchor fatigue testing device according to claim 3, characterized in that, The base includes a first mounting part and a second mounting part, wherein the first mounting part is used to mount the first movable structure and the second mounting part is used to mount the second movable structure. The first mounting part includes a first support platform and a first limiting structure. The first limiting structure is detachably mounted on the top of the first support platform. The first support platform and the first limiting structure are used to clamp the first moving part. The connecting structure extends from both sides of the first support platform and the first limiting structure.

5. The medical anchor fatigue testing device according to claim 4, characterized in that, The second mounting part includes a second support platform, a second limiting structure and a third limiting structure. The second limiting structure and the third limiting structure are detachably mounted on the top of the second support platform and together clamp the second moving part. The second limiting structure is used to circumferentially limit the second moving part, and the third limiting structure is respectively disposed on both sides of the control knob to limit the axial movement of the control knob.

6. The medical anchor fatigue testing device according to claim 4, characterized in that, A first sliding groove is provided on the first moving member, and a first limiting hole is provided on the first limiting structure. The first limiting hole is used for the insertion of a first pin. When the first pin is inserted into the first limiting hole, one end of the first pin extends into the first sliding groove. The first pin is used to limit the circumferential rotation of the first moving member, and the first sliding groove is used to limit the axial movement distance of the first moving member.

7. The medical anchor fatigue testing device according to claim 5, characterized in that, The second moving member includes a limiting part and a threaded part, wherein the limiting part is disposed close to the second fixing member; A protruding pin is provided on the circumferential sidewall of the limiting part, a pin groove is provided at the bottom of the second limiting structure or the top of the second support platform, and a thread is provided on the circumferential sidewall of the threaded part. When the second movable member is installed on the second mounting part, the second limiting structure and the second support platform clamp the limiting part, the pin is located in the pin groove to restrict the circumferential rotation of the second movable member, the third limiting structure and the second support platform clamp the threaded part, and the control knob is sleeved on the threaded part.

8. A medical anchor fatigue testing device according to claim 3, characterized in that, A first slot is provided at one end of the first fixing member facing the second fixing member, and second pins are provided on both sides of the first slot, with the second pins penetrating the first slot radially. When the first anchor is installed with the first fastener, the first anchor is located in the first slot, and the second pin passes through the first anchor to axially limit the first anchor. A second slot is provided at one end of the second fastener facing the first fastener, and third pins are provided on both sides of the second slot, the third pins penetrating the second slot radially. When the second anchor is installed with the second fastener, the second anchor is located in the second slot, and the third pin passes through the second anchor to axially limit the second anchor.

9. A medical anchor fatigue testing device according to claim 2, characterized in that, A first groove is provided on the axial sidewall of the connecting structure, the opening of the first groove facing the first fixing member, and the first groove is used to guide the installation of the tensile measuring instrument.

10. A medical anchor fatigue testing device according to claim 1, characterized in that, A locking device is provided on the locking line, and a torque meter is connected to the end of the locking device. The medical anchor fatigue testing device is also used to control the rotation of the locking device through the torque meter to pull the first anchor and the second anchor, so as to detect the torsional strength of the first anchor and the second anchor.

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