Annulus measuring device

Abstract

The utility model belongs to the technical field of medical instruments, and discloses a valve ring measuring device which comprises a measuring piece. The measuring piece is of an annular structure, a connecting piece is arranged on one side of the measuring piece, the connecting piece is used for being detachably connected with the holding piece, the measuring piece is provided with an inner ring side and an outer ring side, and the measuring piece is provided with opposite clamping grooves corresponding to the inner ring side and the outer ring side of the connecting piece. According to the position, the shape, the depth and the like of the wound part, the valve ring measuring device can be suitable for adopting the holding part to deliver the measuring part or clamping and delivering the measuring part to the wound part through tweezers to measure the size of the valve ring, the dual-purpose valve ring measuring device is formed, and therefore the universality of the valve ring measuring device is improved.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a valve annulus measuring device. Background Technology

[0002] Tricuspid regurgitation is a common heart valve disease with a high incidence rate, causing great harm to patients' physical and mental health. Currently, the common treatments for tricuspid regurgitation are surgical replacement and surgical repair. International research guidelines and clinical expert teams recommend surgical repair as the preferred option when necessary, and surgical repair is gradually taking up a larger share of surgical treatments.

[0003] Artificial valve annulus implantation is a common procedure in surgical repair. Before implantation, the size of the original valve annulus needs to be measured to select the appropriate size. However, currently available valve annulus measuring devices for use with mitral and tricuspid valve surgical annulus are mostly designed with a handle to hold the device in place. During surgery, the device is inserted into the wound site by holding the handle to take measurements. However, due to the limited handle length, this type of valve annulus measuring device cannot meet the needs of most scenarios. Utility Model Content

[0004] The purpose of this invention is to provide a dual-purpose valve annulus measuring device that can measure the size of the valve annulus by either using a gripper to deliver the measuring piece or by using tweezers to pick up and deliver the measuring piece to the wound site.

[0005] The following technical solutions are used to achieve the above objectives.

[0006] This utility model provides a valve annulus measuring device, which includes a measuring element;

[0007] The measuring element is a ring-shaped structure, and a connector is provided on one side of the measuring element. The connector is used for detachable connection with the gripping element. The measuring element has an inner ring side and an outer ring side, and the measuring element has clamping grooves that are arranged opposite to the inner ring side and the outer ring side of the connector.

[0008] In some embodiments, the valve ring measuring device further includes a grip; the grip includes a handle and an adjusting rod, the handle being detachably connected to the connector via the adjusting rod; the adjusting rod is a flexible structure.

[0009] In some embodiments, the adjusting rod is made of soft nickel-titanium alloy or soft stainless steel, and the adjusting rod has a structure that is flexible under normal conditions and recovers its shape at high temperatures.

[0010] In some embodiments, a connecting groove is provided at one end of the handle near the adjusting rod, and the adjusting rod is movably inserted into the connecting groove; a first locking hole is provided on the side wall of the adjusting rod inserted into the connecting groove, and a second locking hole is provided on the side wall of the handle corresponding to the first locking hole; the handle is sequentially inserted into the second locking hole and the first locking hole by a locking fastener to lock and connect with the adjusting rod.

[0011] In some embodiments, the locking device is a threaded locking device, wherein the walls of the first locking hole and the second locking hole are provided with internal threads, and the locking device is threadedly locked into the first locking hole and the second locking hole.

[0012] In some embodiments, the handle is a prism structure, and the side bend of the handle has an arc-shaped transition.

[0013] In some embodiments, the end of the adjusting rod near the measuring element is provided with a connector, and the end of the connector away from the adjusting rod has a groove in its radial direction. The connector includes an actuating element, a telescopic rod, and a groove formed on the measuring element. The connector is detachably inserted into the groove, the telescopic rod is movably disposed in the groove, the actuating element is movably disposed on the measuring element, and the actuating element is connected to the telescopic rod. When the actuating element is in a first position, the telescopic rod extends into the groove of the connector, and when the actuating element is in a second position, the telescopic rod disengages from the groove of the connector.

[0014] In some embodiments, the actuating element is slidably mounted on the measuring element, and an elastic element is provided between the telescopic rod and the groove wall.

[0015] In some embodiments, a fixing rod is also provided in the groove, and a fixing hole is provided in the telescopic rod along its own axial direction. When the actuating member drives the telescopic rod to extend into the slot of the connector, the fixing hole is inserted into the fixing rod.

[0016] In some embodiments, the end of the adjusting rod near the measuring element is provided with a connector, and the end of the connector away from the adjusting rod has a slot along its own radial direction; the connector includes a plug and a groove provided on the measuring element with openings on both the top and inner ring sides, the plug and the plug including a post and an elastic buckle provided on the post, the connector being inserted into the groove from the top opening of the measuring element, the post being inserted into the groove from the inner ring side opening of the measuring element and engaging with the slot of the connector, and the elastic buckle being elastically engaged with the groove wall of the groove.

[0017] In some embodiments, the insertion post has an insertion hole along its own axial direction, and the inner wall of the insertion hole is formed with a step. A positioning post is provided in the groove, and the end of the positioning post is provided with a protruding ring. When the insertion post is inserted into the groove, the insertion hole is movably inserted into the positioning post, and the protruding ring abuts against the step of the insertion hole to prevent the insertion post from sliding out of the groove.

[0018] In some embodiments, the end of the adjusting rod near the measuring element is provided with a connector, and the end of the connector away from the adjusting rod is provided with two elastic posts. The elastic posts are provided with a first buckle and a second buckle. The connector includes a groove on one side of the measuring element, and the inner wall of the groove is provided with a snap-fit ​​groove. The elastic post can be inserted into the groove, and the first buckle is snapped into the snap-fit ​​groove, and the second buckle abuts against the surface of the measuring element.

[0019] The technical solution provided by this utility model has the following advantages and effects:

[0020] This valve annulus measuring device has a connector on the measuring element for detachable connection with a gripping element. When the connector is connected to the gripping element, the gripping element has a certain length, allowing the measuring element to be delivered to the wound site for valve annulus measurement by holding the gripping element. When the connector is not connected to the gripping element, the measuring element has opposing clamping grooves on the inner and outer annulus sides corresponding to the connector. Therefore, the measuring element can be delivered to the wound site by clamping the clamping grooves on both sides of the measuring element with a clamping device such as tweezers. In other words, the measuring element can be clamped with tweezers during surgery instead of the gripping element for measurement. This allows the device to adapt to the location, shape, and depth of the wound site, using either the gripping element or tweezers to deliver the measuring element to the wound site for valve annulus measurement, thus forming a dual-purpose valve annulus measuring device and improving its versatility. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the valve annulus measuring device for mitral valve annulus measurement according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the valve annulus measuring device for measuring the tricuspid valve annulus according to an embodiment of the present invention;

[0023] Figure 3 This is a cross-sectional structural diagram of the connection state of the handle and the adjusting rod in the valve ring measuring device of this utility model embodiment;

[0024] Figure 4 This is a schematic diagram of the connector and connector head in a connected state according to one embodiment of the present utility model;

[0025] Figure 5 yes Figure 4 A schematic diagram of the assembly structure of the connector on the measuring component;

[0026] Figure 6 yes Figure 4 A partial structural diagram of the connector;

[0027] Figure 7 This is a schematic diagram of the connector and connector head in a connected state according to another embodiment of the present invention;

[0028] Figure 8 yes Figure 7 A partial structural diagram of the connector;

[0029] Figure 9 yes Figure 7 A schematic diagram of the specific structure of the plug-in component in the diagram;

[0030] Figure 10 yes Figure 9 A cross-sectional view of the plug-in component at point AA;

[0031] Figure 11 yes Figure 7 A detailed structural diagram of the connector;

[0032] Figure 12 This is a structural schematic diagram of the connector and connector head in a connected state according to another embodiment of the present invention;

[0033] Figure 13 yes Figure 12 A schematic diagram of the specific structure of the connector.

[0034] Explanation of reference numerals in the attached figures:

[0035] 100. Lobe ring measuring device;

[0036] 1. Grip; 11. Handle; 111. Second locking hole; 12. Adjusting rod; 121. First locking hole; 13. Connector; 131. Slot; 132. Elastic post; 133. First buckle body; 134. Second buckle body; 2. Measuring component; 21. Clamping groove; 3. Locking component; 4. Connecting component; 41. Actuating component; 42. Telescopic rod; 421. Fixing hole; 43. Groove; 431. Positioning post; 432. Protruding ring; 433. Snap-fit ​​groove; 44. Elastic component; 45. Fixing rod; 46. Insertion / removal component; 461. Insertion post; 462. Elastic buckle; 463. Insertion hole; 464. Step. Detailed Implementation

[0037] To facilitate understanding of this utility model, the specific embodiments of this utility model will be described in more detail below with reference to the accompanying drawings.

[0038] Unless otherwise specified or defined, the terms "first," "second," etc., used in this document are for distinguishing names only and do not represent a specific number or order.

[0039] Unless otherwise stated or defined, the term “and / or” as used herein includes any and all combinations of one or more of the associated listed items.

[0040] It should be noted that in this article, "fixed to" or "connected to" can mean directly fixed to or connected to a component, or indirectly fixed to or connected to a component.

[0041] This utility model embodiment provides a valve ring measuring device 100, such as Figures 1 to 13 As shown, the valve annulus measuring device 100 includes a measuring element 2; the measuring element 2 has a ring-shaped structure. The ring-shaped hollow structure of the measuring element 2 facilitates suture threading or implantation of chordae tendineae during surgery. The thickness of the ring can be 1mm-8mm, and the measuring element is designed with mark points for aligning with the junction of the original valve annulus.

[0042] One side of the measuring component 2 is provided with a connector 4, which is used for detachable connection with the gripping component 1. The measuring component 2 has an inner ring side and an outer ring side, and the measuring component 2 has clamping grooves 21 corresponding to the inner ring side and outer ring side of the connector 4. In addition, the measuring component 2 can also be designed with specification markings for easy differentiation of specifications. The specification markings are set on the side of the connector 4, where M represents the mitral valve annulus, T represents the tricuspid valve annulus, and the following numbers indicate the corresponding specifications. The markings include, but are not limited to: M24, M26, M28, M30, M32, M34, M36, M38, M40, etc., or T26, T28, T30, T32, T34, T36, etc.

[0043] Specifically, in the valve annulus measuring device 100, the gripper 1 is used for holding, and the measuring element 2, based on its own annular structure, can be used to compare the size of the original valve annulus, thereby selecting an artificial valve annulus of the corresponding size for implantation at the wound site based on the measured valve annulus size. The valve annulus can be a mitral valve annulus or a tricuspid valve annulus; that is, the valve annulus measuring device 100 can be used to measure the size of either a mitral or tricuspid valve annulus. The measuring element 2 of a suitable shape can be selected and replaced according to the shape of the different valve annulus, without any particular limitation. The device includes a connecting member 4 on the gripper 1 for detachable connection with the gripper 2. When the gripper 1 is connected to the connecting member 4 of the measuring member 2, the gripper 1 has a certain length. At this time, the measuring member 2 can be delivered to the wound site by holding the gripper 1 to measure the size of the valve annulus. When the gripper 1 is not connected to the connecting member 4 of the measuring member 2, since the measuring member 2 has opposing clamping grooves 21 on the inner and outer ring sides corresponding to the connecting member 4, the measuring member 2 can be delivered to the wound site by clamping the clamping grooves 21 on both sides of the measuring member 2 with a clamping tool such as tweezers. That is, the measuring member 2 can be clamped with tweezers during surgery to replace the gripper 1 for measurement. Thus, the size of the valve annulus can be measured by either using the gripper 1 to deliver the measuring member 2 or by clamping the measuring member 2 with tweezers to deliver the measuring member 2 to the wound site, depending on the location, shape and depth of the wound site. This makes it a dual-purpose valve annulus measuring device 100, improving the versatility of the valve annulus measuring device 100.

[0044] In some embodiments, such as Figure 1 and Figure 2 As shown, the clamping groove 21 is a U-shaped groove structure formed by the edge of the measuring element 2 recessing towards the opposite side. For example, the clamping groove 21 located on the inner ring side of the measuring element 2 is formed by the inner ring side of the measuring element 2 recessing towards the outer ring side, and the clamping groove 21 located on the outer ring side of the measuring element 2 is formed by the outer ring side of the measuring element 2 recessing towards the inner ring side. This allows the measuring element 2 to be stably clamped and delivered by using tweezers to hold both sides of the annular structure. Of course, in other embodiments, the shape of the clamping groove 21 is not limited to the U-shape described above; other groove shapes are also applicable as long as they can accommodate the clamping of the measuring element. No particular limitation is made here.

[0045] In some embodiments, such as Figure 1 As shown, the valve ring measuring device 100 also includes a gripping member 1, which includes a handle 11 and an adjusting rod 12. The handle 11 is detachably connected to the connecting member 4 via the adjusting rod 12. The adjusting rod 12 is a flexible structure. Because the adjusting rod 12 is flexible, it can be bent into any shape to meet different spatial measurement requirements.

[0046] Specifically, in this embodiment, the adjusting rod 12 is made of soft nickel-titanium alloy or soft stainless steel. Understandably, both soft nickel-titanium alloy and soft stainless steel have the characteristics of being bendable at normal temperatures and restoring their shape at high temperatures. Therefore, they can be bent into any shape without springing back during use in surgery at room temperature, thus meeting different spatial measurement needs. After use, they straighten during high-temperature sterilization, facilitating subsequent operations. Specifically, taking the adjusting rod 12 as a soft nickel-titanium alloy as an example, the AF range of soft nickel-titanium alloy is 37–100℃. It can be bent into any shape at room temperature and straightens when it reaches a temperature above AF.

[0047] In some embodiments, such as Figure 3 As shown, the handle 11 has a connecting groove at one end near the adjusting rod 12, and the adjusting rod 12 is movably inserted into the connecting groove. A first locking hole 121 is formed on the side wall of the adjusting rod 12 inserted into the connecting groove. A second locking hole 111 is formed on the side wall of the handle 11 corresponding to the first locking hole 121. The handle 11 is sequentially inserted into the second locking hole 111 and the first locking hole 121 via a locking fastener 3 to lock the adjusting rod 12. The handle 11 and adjusting rod 12 are locked from the side by the locking fastener 3, allowing for quick assembly and connection of the handle 11 and adjusting rod 12. This also effectively prevents the adjusting rod 12 from breaking and becoming difficult to remove from inside the handle 11. Even if it breaks, it can be directly removed and replaced with a new adjusting rod 12, reducing costs. Of course, in other embodiments, the ends of the handle 11 and the adjusting rod 12 can also be locked together by threaded connection; no particular limitation is made here.

[0048] In some embodiments, such as Figure 3 As shown, the locking device 3 is a threaded locking device. Both the first locking hole 121 and the second locking hole 111 have internal threads on their walls. The locking device 3 is threadedly locked into the first locking hole 121 and the second locking hole 111. It can be understood that the handle 11 and the adjusting rod 12 are locked together by a side threaded locking method, which is convenient and quick to assemble, and provides a secure connection.

[0049] In some embodiments, such as Figure 1 As shown, the handle 11 has a prism structure, and the side transition of the handle 11 is arc-shaped. Specifically, in this embodiment, the handle 11 has a triangular prism structure, and the transition of the prism is arc-shaped to form a rounded edge, which facilitates gripping, improves grip comfort, and has a surgical anti-slip function. Of course, in other embodiments, the handle 11 can also be a cylinder, a square, etc., and no particular limitation is made here.

[0050] In some embodiments, such as Figures 4 to 6As shown, the adjusting rod 12 has a connector 13 at one end near the measuring element 2, and a slot 131 is formed at the end of the connector 13 away from the adjusting rod 12 along its radial direction. The connector 4 includes an actuating element 41, a telescopic rod 42, and a groove 43 formed on the measuring element 2. The connector 13 is detachably inserted into the groove 43, the telescopic rod 42 is movably disposed within the groove 43, and the actuating element 41 is movably disposed on the measuring element 2. When the actuating element 41 is in a first position, the telescopic rod 42 extends into the slot 131 of the connector 13; when the actuating element 41 is in a second position, the telescopic rod 42 disengages from the slot 131 of the connector 13. Specifically, the connector 13 is disposed on the first side of the measuring element 2, and the actuating element 41 is disposed on the second side of the measuring element 2. Therefore, when an external force acts on the actuating element 41 to move relative to the measuring element 2, it will not interfere with the connection of the connector 13. Specifically, when it is necessary to fix the adjusting rod 12 to the measuring element 2, the actuating element 41 is moved to the second position by an external force, which in turn drives the telescopic rod 42 to retract in the groove 43 to avoid the insertion position of the connector 13. Then, the connector 13 connected to the end of the adjusting rod 12 is inserted into the groove 43 of the measuring element 2. Then, the actuating element 41 is moved to the first position, which in turn drives the telescopic rod 42 to extend into the slot 131 of the connector 13 to fix the connector 13, thereby fixing the adjusting rod 12 to the measuring element 2. When it is necessary to remove the adjusting rod 12, the actuating element 41 is moved to the second position by an external force, which in turn drives the telescopic rod 42 to disengage from the slot 131 of the connector 13. At this time, the connector 13 is in the released state, and the adjusting rod 12 can be removed from the measuring element 2.

[0051] Furthermore, such as Figure 4 and Figure 5 As shown, the actuating element 41 is slidably mounted on the measuring element 2, and an elastic element 44 is provided between the telescopic rod 42 and the groove wall of the groove 43. Specifically, the actuating element 41 is a sliding cover structure and is slidably mounted on the measuring element 2. It can reciprocate to move the telescopic rod 42 in a specific direction to either insert into or disengage from the slot 131 of the connector 13. With the elastic element 44, when it is necessary to fix the adjusting rod 12 to the measuring element 2, an external force is applied to the actuating element 41, which moves the telescopic rod 42 back into the groove 43 to avoid the insertion position of the connector 13. At this time, the elastic element 44 is in a compressed state like a spring. The connector 13 connected to the end of the adjusting rod 12 can be inserted into the groove 43 of the measuring element 2. Then, the actuating element 41 is released, and the elastic element 44 moves the actuating element 41 and the telescopic rod 42 under its elastic action, so that the telescopic rod 42 extends into the slot 131 of the connector 13 to fix the connector 13.

[0052] Furthermore, such as Figure 5 and Figure 6 As shown, a fixing rod 45 is also provided in the groove 43, and a fixing hole 421 is provided in the telescopic rod 42 along its own axial direction. When the actuating member 41 drives the telescopic rod 42 to extend into the slot 131 of the connector 13, the fixing hole 421 is inserted into the fixing rod 45. The telescopic rod 42 and the fixing rod 45 are located on opposite sides of the groove 43. When the telescopic rod 42 extends into the slot 131 of the connector 13 to fix the connector 13, the telescopic rod 42 is also fixedly inserted into the fixing rod 45. Thus, the fixing rod 45 can position the telescopic rod 42, effectively preventing the connector 13 from shaking relative to the measuring member 2, thereby avoiding affecting the measurement operation and results. Furthermore, the end of the connector 13 away from the adjusting rod 12 has an opening communicating with the slot 131, and the width of the opening is smaller than the radial length of the slot 131, facilitating the insertion of the fixing rod 45 into the slot 131 to fix the telescopic rod 42.

[0053] In other embodiments, such as Figures 7 to 11 As shown, the adjusting rod 12 has a connector 13 at one end near the measuring member 2, and the connector 13 has a slot 131 at the end away from the adjusting rod 12 along its radial direction; the connector 4 includes a plug-in member 46 and a groove 43 on the measuring member 2 with openings at the top and the inner ring side. The plug-in member 46 includes a post 461 and an elastic buckle 462 on the post 461. The connector 13 is inserted into the groove 43 from the top opening of the measuring member 2, and the post 461 is inserted into the groove 43 from the inner ring side opening of the measuring member 2 and inserted into the slot 131 of the connector 13. The elastic buckle 462 is elastically held in place by the groove wall of the groove 43. The top of the measuring component 2 refers to the side facing the operator when assembling the adjusting rod 12. An opening communicating with its internal groove 43 is provided at the top of the measuring component 2, facilitating the insertion of the connector 13 of the adjusting rod 12 into the groove 43. Then, the insert 461 is inserted into the groove 43 through the opening on the inner ring side of the measuring component 2 and into the slot 131 of the connector 13. At this time, the elastic buckle 462 holds the groove wall of the groove 43, stably fixing the connector 13 within the groove 43. When the adjusting rod 12 is fixed to the measuring component 2, the elastic buckle 462 is elastic, so when it is necessary to disassemble the adjusting rod 12, external force is applied to pull the insert 46 to deform the elastic buckle 462, allowing it to be pulled out of the groove 43, thus enabling the adjusting rod 12 to be disassembled. In other words, pushing the insert 46 locks the adjusting rod 12, and pressing it deforms it for removal, making the operation simple and convenient.

[0054] Furthermore, such as Figure 8 and Figure 10As shown, the insertion post 461 has an insertion hole 463 along its axial direction, and the inner wall of the insertion hole 463 has a step 464. A positioning post 431 is provided in the groove 43, and the end of the positioning post 431 has a protruding ring 432. When the insertion post 461 is inserted into the groove 43, the insertion hole 463 is movably inserted into the positioning post 431. The protruding ring 432 abuts against the step 464 of the insertion hole 463 to prevent the insertion post 461 from sliding out of the groove 43. It can be understood that through the cooperation of the step 464 in the insertion hole 463 and the protruding ring 432 on the positioning post 431, when the insertion post 461 slides to the point where its step 464 abuts against the protruding ring 432 of the positioning post 431, the protruding ring 432 restricts the further sliding of the insertion post 461, thereby effectively preventing the insertion / removal member 46 from dislodging from the groove 43 under excessive external force.

[0055] In some embodiments, such as Figures 12 to 13 As shown, the adjusting rod 12 has a connector 13 at one end near the measuring member 2, and two elastic posts 132 at the other end away from the adjusting rod 12. The elastic posts 132 are provided with a first buckle 133 and a second buckle 134. The connector 4 includes a groove 43 on one side of the measuring member 2, and the inner wall of the groove 43 is provided with a snap-fit ​​groove 433. The elastic posts 132 can be inserted into the groove 43, and the first buckle 133 is snapped into the snap-fit ​​groove 433. The second buckle 134 abuts against the surface of the measuring member 2. Understandably, in this embodiment, by making the connector 13 into a pluggable structure, two fasteners, a first fastener 133 and a second fastener 134, are provided to cooperate. The first fastener 133 is held in the snap-fit ​​groove 433, and the second fastener 134 is pressed against the surface of the measuring element 2, so that the connector 13 can be elastically locked in the groove 43 of the measuring element 2. Thus, when the adjusting rod 12 is fixed on the measuring element 2, it can be pulled out under the action of external force, so that the adjusting rod 12 can be disassembled.

[0056] The above embodiments are not an exhaustive list based on the present invention, and there may be other embodiments not listed. Any substitutions and improvements made without departing from the concept of the present invention are within the protection scope of the present invention.

Claims

1. A valve ring measuring device, characterized in that, The valve ring measuring device includes a measuring element; The measuring element is a ring-shaped structure, and a connector is provided on one side of the measuring element. The connector is used for detachable connection with the gripping element. The measuring element has an inner ring side and an outer ring side, and the measuring element has clamping grooves that are arranged opposite to the inner ring side and the outer ring side of the connector.

2. The valve ring measuring device as described in claim 1, characterized in that, The annular measuring device further includes a gripping component; the gripping component includes a handle and an adjusting rod, the handle being detachably connected to the connecting component via the adjusting rod; the adjusting rod is a bendable structure.

3. The valve ring measuring device as described in claim 2, characterized in that, The adjusting rod is made of soft nickel-titanium alloy or soft stainless steel.

4. The valve ring measuring device as described in claim 2, characterized in that, The handle has a connecting groove at one end near the adjusting rod, and the adjusting rod is movably inserted into the connecting groove; the side wall of the adjusting rod inserted into the connecting groove has a first locking hole, and the handle has a second locking hole on the side wall corresponding to the first locking hole; the handle is sequentially inserted into the second locking hole and the first locking hole by a locking fastener to lock and connect with the adjusting rod.

5. The valve ring measuring device as described in claim 4, characterized in that, The locking device is a threaded locking device, and the walls of the first locking hole and the second locking hole are provided with internal threads. The locking device is threadedly locked into the first locking hole and the second locking hole.

6. The valve ring measuring device as described in claim 2, characterized in that, The handle has a prism structure, and the side bends of the handle have an arc-shaped transition.

7. The valve ring measuring device according to any one of claims 2-6, characterized in that, The adjusting rod has a connector at one end near the measuring element, and a slot is formed at the other end of the connector away from the adjusting rod in its radial direction. The connector includes an actuating element, a telescopic rod, and a groove formed on the measuring element. The connector is detachably inserted into the groove, the telescopic rod is movably disposed in the groove, and the actuating element is movably disposed on the measuring element and connected to the telescopic rod. When the actuating element is in a first position, the telescopic rod extends into the slot of the connector. When the actuating element is in a second position, the telescopic rod disengages from the slot of the connector.

8. The valve ring measuring device according to any one of claims 2-6, characterized in that, The adjusting rod has a connector at one end near the measuring element, and a slot is formed at the other end of the connector away from the adjusting rod in its radial direction. The connector includes a plug and a groove on the measuring element with openings at the top and the inner ring side. The plug includes a post and an elastic buckle on the post. The connector is inserted into the groove from the top opening of the measuring element, and the post is inserted into the groove from the inner ring side opening of the measuring element and engaged in the slot of the connector. The elastic buckle is elastically engaged in the groove wall.

9. The valve ring measuring device as described in claim 8, characterized in that, The insertion post has an insertion hole along its own axial direction, and the inner wall of the insertion hole has a step. A positioning post is provided in the groove, and the end of the positioning post has a protruding ring. When the insertion post is inserted into the groove, the insertion hole is movably inserted into the positioning post. The protruding ring abuts against the step of the insertion hole to prevent the insertion post from sliding out of the groove.

10. The valve ring measuring device according to any one of claims 2-6, characterized in that, The adjusting rod has a connector at one end near the measuring element, and two elastic posts at the other end away from the adjusting rod. Each elastic post has a first fastener and a second fastener. The connector includes a groove on one side of the measuring element, and the inner wall of the groove has a snap-fit ​​groove. The elastic post can be inserted into the groove, and the first fastener is snapped into the snap-fit ​​groove, while the second fastener abuts against the surface of the measuring element.

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