A measuring device for annuloplasty

Abstract

The utility model provides a kind of for annuloplasty measuring device, including insertion section, handheld section and measuring section, the insertion section includes insertion part and insertion main part, the cross section of insertion part is oval, and cross section size gradually increases from the front side to rear side of the insertion part, the rear side of insertion part is connected with the insertion main part;The handheld section includes bending part and rigid part, the bending part is connected between the rear side of the insertion main part and the rigid part;The measuring section is connected with the rear side of the rigid part, scale is provided on the measuring section, insertion part and annulus inner mouth adaptation degree are high, it is convenient to hand, avoid the hand of assistant to block the field of vision and operation of operator.

Description

Technical Field

[0001] This utility model relates to the field of measuring instrument technology, and in particular to a measuring instrument for valve ring shaping. Background Technology

[0002] Orthokeratology (OPO) refers to the surgical or interventional reshaping or repair of the valve annulus of a heart valve to restore its normal shape and size, thereby improving valve function and reducing valvular regurgitation. OPO surgery is suitable for mitral regurgitation, tricuspid regurgitation, and aortic valve disease. Taking aortic valve disease as an example, during the procedure, a pre-made annulus suture is created at the original valve annulus location. A suitable measuring instrument is then selected and inserted into the annulus opening. Once the measuring instrument is in place, the surgeon can assess the actual size of the valve annulus. After confirming the size, an assistant holds the measuring instrument steadily while the surgeon begins tying the pre-made annulus suture around the dilator. Once the suture is tied, the annulus reshaping process is complete.

[0003] The measuring instrument currently in use is the Hegar expander, which is made of metal and is rod-shaped with a blunt, rounded head. However, it has the following drawbacks:

[0004] 1. The blunt, rounded head of the Hegar dilator does not fit well with the inner rim of the valve annulus, which can easily lead to iatrogenic valve tearing if the head of the Hegar dilator cannot enter the inner rim of the valve annulus or if it is forced to enter.

[0005] 2. The Hegar expander has a smooth surface and no clear point of application, making it difficult to keep it still during operation. It is prone to displacement, which in turn affects the shaping surgery.

[0006] 3. The Hegar expander is rod-shaped, so the assistant's hand holding the Hegar expander will obstruct the surgeon's view and operation, which will increase the difficulty of the surgery and increase the surgical risk. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of existing technologies by providing a measuring device for valve annulus shaping. Its insertion part has a high degree of compatibility with the inner opening of the valve annulus, making it easy to hold and preventing the assistant's hand from obstructing the surgeon's view and operation.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A measuring instrument for valve annulus shaping, comprising:

[0010] An insertion segment includes an insertion part and an insertion body part. The cross-section of the insertion part is elliptical, and the cross-sectional size gradually increases from the front side to the rear side of the insertion part. The rear side of the insertion part is connected to the insertion body part.

[0011] A hand-held section, the hand-held section including a curved portion and a rigid portion, the curved portion being connected between the rear side of the insertion body portion and the rigid portion;

[0012] The measuring section is connected to the rear side of the rigid part, and the measuring section is provided with a scale.

[0013] In a preferred embodiment, the outer surface of the insertion body is provided with at least one set of scale line structures, each set of scale line structures is arranged along the length direction of the insertion body, and the starting scale of the scale line structure is located on the front side of the insertion body.

[0014] In a preferred embodiment, multiple sets of scale lines are arranged at intervals along the circumferential direction of the insertion body.

[0015] In a preferred embodiment, the cross-section of the insertion body is circular.

[0016] In a preferred embodiment, the circular diameter of the cross-section of the insertion body is 19mm, 21mm, 23mm or 25mm.

[0017] In a preferred embodiment, the length of the inserted main body is 4.5 cm;

[0018] The length of the insertion part is 1.5cm.

[0019] In a preferred embodiment, the angle between the rigid part and the unbent curved part is 100° to 180°.

[0020] In a preferred embodiment, the cross-sectional dimensions of the rigid portion and the curved portion are respectively smaller than the cross-sectional dimensions of the insertion body portion.

[0021] In a preferred embodiment, the measurement segment includes:

[0022] Rounded corners;

[0023] A measuring body is connected between the rear side of the rigid part and the rounded corner part.

[0024] In a preferred embodiment, the cross-section of the measuring body is rectangular.

[0025] Compared with existing technologies, this technical solution has the following advantages:

[0026] The elliptical cross-section of the insertion portion is adapted to the flattened elliptical inner opening of the valve annulus, facilitating entry into the inner opening of the valve annulus.

[0027] The slender handle section is easy to hold and can be used even in deep surgical fields or minimally invasive incision scenarios. The flexible design of the curved section allows the surgeon to adjust the ideal angle when using the insertion section. The slender handle section makes it easy for the assistant to hold the surgeon stably without affecting the surgeon's operation when the surgeon is shaping the valve annulus, which can greatly improve the convenience of the operation and increase the success rate of the operation.

[0028] The scale on the measuring segment can measure the leaflet length, increasing its functionality. Furthermore, the rounded corners of the measuring segment prevent damage to the leaflet, reduce the need for cutting the measuring tape during surgery, save medical resources, and make the surgery easier.

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the measuring device for valve ring shaping described in this utility model;

[0031] Figure 2 This is a schematic diagram of the structure of the insertion segment described in this utility model;

[0032] Figure 3 This is a cross-sectional schematic diagram of the insertion part described in this utility model;

[0033] Figure 4 This is a schematic diagram of the measuring section of the present invention.

[0034] In the diagram: 100 Insertion section, 110 Insertion part, 120 Insertion main body part, 121 Scale line structure, 200 Handheld section, 210 Bending part, 220 Rigid part, 300 Measuring section, 310 Measuring main body part, 320 Rounded corner part. Detailed Implementation

[0035] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0036] like Figure 1 and Figure 2 As shown, the measuring device for valve annulus shaping includes:

[0037] Insertion segment 100, the insertion segment 100 includes an insertion part 110 and an insertion body part 120, the cross-section of the insertion part 110 is elliptical, and the cross-sectional size gradually increases from the front side to the rear side of the insertion part 110, and the rear side of the insertion part 110 is connected to the insertion body part 120;

[0038] Hand-held section 200, the hand-held section 200 includes a curved portion 210 and a rigid portion 220, the curved portion 210 being connected between the rear side of the insertion body portion 120 and the rigid portion 220;

[0039] The measuring section 300 is connected to the rear side of the rigid part 220, and the measuring section 300 is provided with a scale.

[0040] The elliptical-shaped insertion portion 110 is adapted to the flattened elliptical inner opening of the valve annulus, facilitating insertion until the insertion body portion 120 is held within the inner opening of the valve annulus. The handle section 200 serves as a handheld component for the assistant, effectively preventing the assistant's hand from obstructing the surgeon's view and operation compared to directly holding the insertion section in existing technologies. It also provides a point of leverage, preventing displacement that could affect the valve annulus reshaping surgery. Furthermore, it extends the overall length of the measuring device, preventing situations where the valve orifice cannot be reached in deep surgical fields or minimally invasive incision surgeries. Additionally, the curved portion 210 allows the surgeon to adjust the angle of the insertion section 100. The graduations on the measuring section 300 can measure the leaflet length, increasing its functionality.

[0041] like Figure 1 and Figure 2 As shown, the rear side of the insertion portion 110 is connected to the front side of the insertion body portion 120. Since the cross-sectional dimension of the insertion portion 110 gradually increases from the front side to the rear side, the front side of the insertion portion 110 is a pointed tip, which is smoothed to allow for smooth and safe insertion into the inner orifice of the valve annulus without damaging surrounding tissue.

[0042] The valve annulus is the connection between the heart valve and the heart wall, forming a ring-shaped structure. The inner orifice of the valve annulus refers to the opening formed by the connection between the valve and the heart wall.

[0043] The rear side of the insertion part 110 coincides with the front side of the insertion body part 120, that is, the rear side of the insertion part 110 is circular. The insertion part 110 extends and connects to the front and rear sides of the insertion part 110 in an elliptical cross-section. The surface of the insertion part 110 and the connection between the insertion part 110 and the front side of the insertion body part 120 are smoothed.

[0044] The distance from the front to the rear of the insertion part 110 defines the length of the insertion part 110, which is 1.5 cm.

[0045] like Figure 1 and Figure 2As shown, the distance from the front to the rear of the insertion body 120 defines its length, which can be 4.5 cm. The cross-section of the insertion body 120 is circular, meaning it is cylindrical. The diameter of the circular cross-section of the insertion body 120 is 19 mm, 21 mm, 23 mm, or 25 mm, corresponding to four different measuring device models. Therefore, a suitable measuring device model can be selected based on the valve size. Of course, once the insertion body 120 of the corresponding measuring device is fitted and held within the valve annulus, the diameter of the valve annulus ...

[0046] The cross-sectional dimensions of the insertion part 110 are adjusted depending on the model of the insertion main body 120.

[0047] like Figure 2 As shown, the outer surface of the insertion body 120 is provided with at least one set of scale line structures 121. The scale line structures 121 can be used to measure the leaflet occlusion height, which refers to the height at which the anterior and posterior leaflets of the mitral valve are in contact or nearly in contact with each other during ventricular diastole.

[0048] It is evident that the insertion body 120, in addition to being held within the valve annulus, can also determine the diameter of the valve annulus's inner opening through the model of the measuring instrument, and measure the leaflet alignment height through the scale line structure 121 on the outer surface of the insertion body 120. That is, when the insertion body 120 is held within the valve annulus, the diameter of the valve annulus's inner opening and the leaflet alignment height can be measured simultaneously.

[0049] Specifically, each set of scale line structures 121 is arranged along the length direction of the insertion body portion 120. The starting scale of the scale line structure 121 can be located on the front side of the insertion body portion 120, while the maximum scale of the scale line structure 121 is located on the rear side of the insertion body portion 120.

[0050] Preferably, multiple sets of scale line structures 121 are arranged at intervals along the circumference of the insertion body 120. By increasing the number of scale line structures 121, the surgeon's field of vision is prevented from being obscured, thus ensuring the dimensions on the scale line structures 121 can be read. The scale line structures 121 employ millimeter-level graduations.

[0051] In this embodiment, the scale line structure 121 consists of three sets, which are arranged at equal intervals along the circumferential direction of the insertion body 120, i.e., the circumferential angle between two adjacent sets of scale line structures 120 is 120°. The three sets of equally divided scale lines also provide the surgeon with a reference for marking the artificial blood vessel into three equal parts.

[0052] like Figure 2 As shown, the handheld section 200 includes a bent portion 210 and a rigid portion 220. The bent portion 210 is connected to the rear side of the insertion main body 120 and the rigid portion 220, respectively. The connection can be achieved by integral molding, screwing, plugging, welding, or other methods. The bent portion 210 of the handheld section 200 is flexible, thus adjusting the relative angle between the insertion section 100 and the handheld section 200, as well as adjusting the angular position of the measuring section 300 relative to the insertion section 100, facilitates the insertion section 100 entering the inner opening of the valve annulus and enables the measuring section 300 to measure the length of the valve leaflet.

[0053] The bending portion 210 is made of an elastic material, which can be metallic or non-metallic. Metallic materials include cobalt-chromium alloys, nickel-titanium alloys, etc., while non-metallic materials include silicone, rubber, and biocompatible polymers. Silicone and rubber materials may have internal springs to enhance structural strength and achieve bending. Biocompatible polymers include polyurethane, polyester, etc.

[0054] The rigid part 220 can be made of stainless steel, aluminum alloy, etc., and cannot be bent, providing stability and good support.

[0055] As can be seen, the handheld section 200 combines the bending portion 210 and the rigid portion 220 to form a handheld section 200 that is both flexible and stable. This design allows the operator to adjust the operating direction and angle as needed, making the measuring instrument easier to operate and control, while maintaining the stability and durability of its overall structure.

[0056] The front side of the curved portion 210 is connected to the rear side of the insertion body portion 120, the rear side of the curved portion 210 is connected to the front side of the rigid portion 220, and the rear side of the rigid portion 220 is connected to the measuring segment 300. The distance from the front to the rear side of the curved portion 210 defines its length. The distance from the front to the rear side of the rigid portion 220 defines its length. Both the curved portion 210 and the rigid portion 220 are 10 cm in length.

[0057] The cross-sections of both the curved portion 210 and the rigid portion 220 are circular or rectangular. However, it should be noted that the cross-sectional dimensions of the rigid portion 220 and the curved portion 210 are smaller than the cross-sectional dimensions of the insertion body portion 120.

[0058] refer to Figure 2 The included angle between the rigid part 220 and the unbent bent part 210 is 100° to 180°, further increasing the angle adjustment range of the measuring section 300 relative to the insertion section 100.

[0059] The curved portion 210 and the rigid portion 220 can each be used as a handheld device. Because the curved portion 210 can be bent, the assistant's hand can be kept away from the insertion segment 100, preventing the assistant's hand from obstructing the surgeon's view. At the same time, the position of the measuring segment 300 relative to the insertion segment 100 can be adjusted to measure the length of the leaflet.

[0060] like Figure 1 and Figure 4 As shown, the measuring segment 300 and the rigid part 220 are kept on the same straight line, or the measuring segment 300 and the rigid part 220 are set at an angle, further increasing the adjustment angle of the measuring segment 300 to realize the measurement of the leaflet length.

[0061] In existing valve leaflet length measurement procedures, surgeons typically use disposable graduated measuring tapes. However, this requires on-site trimming each time, which is time-consuming, laborious, and wastes time during cardiac arrest. Furthermore, the lack of standardized trimming methods leads to measurement errors. This embodiment, however, allows for leaflet length measurement by adjusting the angle between the measuring segment 300 and the insertion segment 100. This method is convenient and effectively improves measurement efficiency.

[0062] The scale on the measuring segment 300 is in millimeter increments, and the scale is arranged along the length of the measuring segment 300. The starting scale is located on the rear side of the measuring segment 300, and the maximum scale is located on the front side of the measuring segment 300. The cross-section of the measuring segment 300 may be rectangular, wherein the measuring segment 300 is 30mm long, 5mm wide, and 2mm thick, and the width and thickness of the measuring segment 300 correspond to the two sides of the rectangle.

[0063] like Figure 1 and Figure 4 As shown, the measurement segment 300 includes:

[0064] Rounded corners 320;

[0065] The measuring body 310 is connected between the rear side of the rigid part and the rounded corner part 320.

[0066] The measuring body 310 and the rounded corner portion 320 are arranged along the length direction of the measuring segment 300. By providing the rounded corner portion 320, damage to the leaflets is prevented.

[0067] The measuring instrument used for valve annulus reshaping is made of metal, which is resistant to high temperatures and corrosion, and is hard and durable, making it easy to use during surgery and reuse after high-temperature sterilization. The curved portion 210, unlike the rigid portion 220, is made of a metal material with elastic properties.

[0068] The method of using the measuring instrument for annular shaping is as follows:

[0069] The measuring instrument's insertion section 100 enters the inner opening of the valve annulus from top to bottom. At this point, the diameter of the inner opening of the valve annulus can be determined by the measuring instrument's model, and the leaflet alignment height is measured using the scale line structure 121 on the outer surface of the insertion body 120. Then, the length of the leaflet is measured using the measuring section 300. The diameter of the inner opening of the valve annulus, the leaflet alignment height, and the length of the leaflet provide a reference for subsequent valve annulus sutures.

[0070] When tying and shaping the valve annulus sutures, an assistant holds the handpiece 200 so that the insertion body 120 of the insertion section 100 enters the inner opening of the valve annulus. The surgeon then ties and shapes the insertion body 120 around the insertion body 120.

[0071] In summary, the elliptical cross-section of the insertion portion 110 is adapted to the flattened elliptical inner opening of the valve annulus, facilitating entry into the annulus. The slender handle section 200 is easy to hold, even in deep surgical fields or minimally invasive incision scenarios. The flexible design of the bending portion 210 allows the surgeon to adjust the ideal angle when using the insertion portion 100. The slender handle section 200 allows the assistant to hold the device stably without affecting the surgeon's operation during valve annulus shaping, greatly improving surgical convenience and success rate. The graduations on the measuring section 300 can measure the leaflet length, increasing its functionality. Furthermore, the rounded corners 320 of the measuring section 300 avoid damage to the leaflets, reduce the need for cutting the measuring tape during surgery, save medical resources, and make the surgery easier.

[0072] The embodiments described above are only used to illustrate the technical ideas and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. The scope of patent application of this utility model should not be limited by these embodiments. That is, any equivalent changes or modifications made in accordance with the spirit disclosed in this utility model still fall within the patent scope of this utility model.

Claims

1. A measuring instrument for valve ring shaping, characterized in that, include: An insertion segment (100) includes an insertion part (110) and an insertion body part (120). The cross-section of the insertion part (110) is elliptical, and the cross-sectional size gradually increases from the front side to the rear side of the insertion part (110). The rear side of the insertion part (110) is connected to the insertion body part (120). Hand-held section (200), the hand-held section (200) includes a curved portion (210) and a rigid portion (220), the curved portion (210) being connected between the rear side of the insertion body portion (120) and the rigid portion (220); The measuring section (300) is connected to the rear side of the rigid part (220) and is provided with a scale.

2. The measuring device for valve ring shaping as described in claim 1, characterized in that, The outer surface of the insertion body (120) is provided with at least one set of scale line structures (121), each set of scale line structures (121) is arranged along the length direction of the insertion body (120), and the starting scale of the scale line structure (121) is located on the front side of the insertion body (120).

3. The measuring device for valve ring shaping as described in claim 2, characterized in that, Multiple sets of scale line structures (121) are arranged at intervals along the circumferential direction of the insertion body (120).

4. The measuring device for valve ring shaping as described in claim 1, characterized in that, The cross-section of the insertion body (120) is circular.

5. The measuring device for valve ring shaping as described in claim 4, characterized in that, The circular diameter of the cross-section of the insertion body (120) is 19mm, 21mm, 23mm or 25mm.

6. The measuring device for valve ring shaping as described in claim 1, characterized in that, The length of the inserted main body (120) is 4.5 cm; The length of the insertion part (110) is 1.5cm.

7. The measuring device for valve ring shaping as described in claim 1, characterized in that, The included angle between the rigid part (220) and the unbent curved part (210) is 100°~180°.

8. The measuring device for valve ring shaping as described in claim 1, characterized in that, The cross-sectional dimensions of the rigid part (220) and the curved part (210) are smaller than the cross-sectional dimensions of the insertion body part (120).

9. The measuring device for valve ring shaping as described in claim 1, characterized in that, The measurement segment (300) includes: Rounded corners (320); The measuring body (310) is connected between the rear side of the rigid part and the rounded corner part (320).

10. The measuring device for valve ring shaping as described in claim 9, characterized in that, The cross-section of the measuring body (310) is rectangular.

Images