A tissue measurement device

Abstract

This invention provides a tissue measuring device, including a base with support rods at both ends. A fixed measuring component and a slidable pressing component are mounted on the support rods, with the pressing component located below the measuring component. The measuring component includes a measuring plate fixedly connected to at least one of the support rods and a dial indicator mounted on the measuring plate. The pressing component includes a pressing plate slidably connected to both support rods and a pressing block mounted on the bottom surface of the pressing plate. The measuring end of the dial indicator contacts the upper surface of the pressing plate, and the axis of the dial indicator is aligned vertically with the center of the pressing block, for measuring the displacement distance of the pressing plate. This invention has wide applications in the field of medical device technology.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and more specifically, to a tissue measuring device. Background Technology

[0002] In biomedical research and clinical practice, accurate measurement of tissue thickness is a crucial foundational task. During laparoscopic stapler surgery, tissue must first be clamped for a certain period to allow tissue fluid to drain and compress to a suitable suture thickness before firing and cutting. Tissue thickness directly affects the staple formation outcome. To avoid tissue rupture and damage due to improper thickness, the thickness of the target tissue must be measured preoperatively or intraoperatively to provide a reference for adjusting surgical parameters.

[0003] Traditional tissue measurement methods often rely on manual measurement using tools such as vernier calipers. These tools cannot simulate the clamping environment of laparoscopic staplers on tissues during surgery. The stress state and environmental conditions during measurement are disconnected from actual surgical procedures, resulting in limited reference value of the measurement results and difficulty in accurately guiding surgical operations. Furthermore, existing measurement methods often involve direct contact between the measuring instrument and the tissue, which can easily damage the tissue and affect its physiological state or subsequent surgical progress. In addition, it is difficult to ensure consistent pressure during manual measurement, leading to poor repeatability and compromised accuracy. Utility Model Content

[0004] To address the aforementioned problems, the present invention provides a tissue measuring device, comprising a base with support rods at both ends; a fixed measuring component and a slidable pressing component are mounted on the support rods, with the pressing component located below the measuring component; the measuring component includes a measuring plate fixedly connected to at least one of the support rods and a dial indicator mounted on the measuring plate; the pressing component includes a pressing plate slidably connected to both support rods and a pressing block mounted on the bottom surface of the pressing plate; the measuring end of the dial indicator contacts the upper surface of the pressing plate, and the axis of the dial indicator and the center of the pressing block are on the same vertical line, for measuring the displacement distance of the pressing plate.

[0005] Preferably, the measuring micrometer includes a dial, a connecting shaft, and a measuring shaft connected sequentially from top to bottom. The connecting shaft is slidably connected to the measuring plate, and the connecting shaft is provided with a locking element for fixing the position of the measuring micrometer. The measuring shaft is vertically downward and fits against the upper surface of the lower pressure plate.

[0006] Preferably, the upper surface of the base is a horizontal plane, and anti-slip textures are provided at the positions corresponding to the lower pressure block on the upper surface.

[0007] Preferably, the cross-section of the pressure block is a trapezoid with a wider top and a narrower bottom, and the material of the pressure block is a biocompatible material.

[0008] Preferably, the lower pressure plate has hand-held parts at both ends for easy operation.

[0009] Preferably, the measuring range of the dial indicator is not less than the maximum travel distance of the pressing component.

[0010] Preferably, the lower surface of the pressure block is a plane or an arc-shaped surface that matches the contour of the tissue to be tested.

[0011] The beneficial effects of this invention are as follows: By cooperating with the base, the clamping environment of a laparoscopic stapler is simulated, enabling pre-measurement of tissue thickness that matches the surgical environment. This improves the reference value of the measurement results and provides a reliable thickness reference for tissue cutting and suturing during surgery. Indirect measurement of tissue thickness is achieved by measuring the displacement of the pressure plate with a dial indicator, avoiding damage to the sample caused by direct measurement. The coaxial arrangement of the dial indicator and the pressure block improves the accuracy of the measurement data. The overall structure is simple and reasonable, and the operation is convenient and efficient, meeting the measurement needs of samples with different shapes. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Symbols in the diagram: 1. Base; 2. Support rod; 3. Measuring plate; 4. Dial indicator; 5. Lower pressure plate; 6. Lower pressure block; 401. Dial; 402. Connecting shaft; 403. Measuring shaft. Detailed Implementation

[0015] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0016] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0017] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0018] The present application will now describe a tissue measurement device provided in an embodiment.

[0019] Please see Figure 1 The diagram below illustrates the structure of this utility model. The tissue measuring device includes a base 1 with support rods 2 at both ends. The two support rods 2 are fixed to the base 1 by threaded connection or welding. A fixed measuring component and a slidable pressing component are mounted on the support rods 2. The pressing component is located below the measuring component, and a measuring space for placing the sample to be measured is formed between the pressing component and the base 1. The measuring component includes a measuring plate 3 fixedly connected to at least one of the support rods 2 and a dial gauge 4 mounted on the measuring plate 3. The pressing component includes a pressing plate 5 slidably connected to both support rods 2 and a pressing block 6 mounted on the bottom surface of the pressing plate 5. The measuring end of the dial gauge 4 contacts the upper surface of the pressing plate 5, and the axis of the dial gauge 4 is aligned with the center of the pressing block 6, used to measure the displacement distance of the pressing plate 5. Specifically, the pressing component compresses the sample, causing deformation. The change in sample thickness leads to a corresponding displacement of the pressing plate 5. The dial gauge 4 indirectly obtains the tissue thickness of the sample by measuring the displacement distance of the pressing plate 5.

[0020] Furthermore, the dial indicator 4 includes a dial 401, a connecting shaft 402, and a measuring shaft 403 connected sequentially from top to bottom. The connecting shaft 402 is clearance-fitted with the mounting hole of the measuring plate 3, enabling a sliding connection between the connecting shaft 402 and the measuring plate 3. This allows for adjustment of the height of the dial indicator 4, and the connecting shaft 402 is equipped with a locking element for fixing the position of the dial indicator 4. The measuring shaft 403 is vertically downward and fits against the upper surface of the lower pressure plate 5. The measuring shaft 403 extends and retracts synchronously with the lifting and lowering of the lower pressure plate 5, and the dial 401 converts the extension and retraction amount into readable scale readings. In this embodiment, the connecting shaft 402 has an external thread on its outer side, and the locking element is a locking nut adapted to the external thread, which is sleeved on the connecting shaft 402. Tightening the locking nut fixes the position of the dial indicator 4, preventing displacement of the dial indicator 4 during measurement.

[0021] Specifically, the upper surface of the base 1 is a horizontal plane, and anti-slip textures are provided at the corresponding positions of the upper surface and the lower pressure block 6 to ensure that the thickness of the sample changes uniformly when it is compressed, prevent the sample from sliding or shifting during the measurement process, ensure the consistency of the measurement points, and improve the accuracy of the measurement results.

[0022] Specifically, the cross-section of the lower pressure block 6 is a trapezoid with a wider top and a narrower bottom, which allows the pressure of the lower pressure block 6 to be concentrated on the lower surface and evenly distributed; the material of the lower pressure block 6 is a biocompatible material, such as medical silicone, to avoid scratching the tissue sample.

[0023] In this embodiment, the pressing component is used to simulate the clamping environment of the laparoscopic anastomosis device. The holding force of the pressing component at the contact position with the tissue to be tested after it naturally falls is 8g / mm², and the dial gauge 4 is read after the pressing component presses the tissue for 15 seconds.

[0024] Specifically, the lower pressure plate 5 is provided with sliding sleeves at both ends that cooperate with the support rods 2. The sliding sleeves and the two support rods 2 are slidably connected to ensure that the lower pressure plate 5 can be raised and lowered smoothly.

[0025] Specifically, the lower pressure plate 5 has handholds at both ends for easy operation. The handholds and the lower pressure plate 5 are integrally formed, making it easy for operators to hold.

[0026] Specifically, the measuring range of dial indicator 4 is not less than the maximum travel of the pressing component, ensuring that the measuring range of dial indicator 4 completely covers the travel range of the pressing component, with no measurement blind spots, thus improving the applicability and reliability of the equipment.

[0027] Specifically, the lower surface of the pressure block 6 is a plane or an arc-shaped surface that matches the contour of the tissue to be tested; this reduces pressure concentration caused by poor contact, ensures pressure uniformity during the measurement of various samples, and improves measurement accuracy.

[0028] The method of using this utility model is as follows: First, zero-point calibration is required before use. Adjust the pressing component to allow it to fall freely, so that the lower surface of the pressing block 6 is in close contact with the upper surface of the base 1. Then adjust the measuring micrometer 4 so that the probe of the measuring shaft 403 is in close contact with the upper surface of the pressing plate 5. Adjust it downwards by 2-3 mm and lock it. Finally, zero the reading of the measuring micrometer 4. After calibration, the operator holds both ends of the pressing plate 5 with both hands and lifts the pressing plate 5 to a height of about 40 mm. Place the tissue to be measured stably on the upper surface of the base 1 in the area corresponding to the pressing block 6, ensuring that the tissue is wrinkle-free and tilted. Then, slowly lower the pressing plate 5 so that the pressing block 6 contacts the tissue and applies pressure. Hold the pressure for 15 seconds to allow the tissue fluid to be fully drained and the tissue to be compressed to a suitable thickness for suturing. After the 15-second pressure holding period, directly read the value on the measuring micrometer 4. This value is the thickness of the tissue at the current position. After the measurement is completed, slowly lift the pressing component and remove the tissue sample. If multiple measurements are required, repeat the above steps.

[0029] In this invention, the cooperation between the pressing component and the base 1 simulates the clamping environment of a laparoscopic stapler, enabling pre-measurement of tissue thickness that matches the surgical environment. This improves the reference value of the measurement results and provides a reliable thickness reference for tissue cutting and suturing during surgery. Indirect measurement of tissue thickness is achieved by measuring the displacement of the pressing plate 5 using a dial indicator 4, avoiding damage to the sample caused by direct measurement. The coaxial arrangement of the dial indicator 4 and the pressing block 6 improves the accuracy of the measurement data. The overall structure is simple and reasonable, and the operation is convenient and efficient, meeting the measurement needs of samples with different shapes.

[0030] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A tissue measuring device, comprising a base, wherein support rods are respectively provided at both ends of the base; characterized in that: The support rod is equipped with a fixed measuring component and a slidable pressing component, with the pressing component located below the measuring component. The measuring component includes a measuring plate fixedly connected to at least one of the support rods and a measuring dial indicator disposed on the measuring plate. The pressing component includes a pressing plate slidably connected to both support rods and a pressing block disposed on the bottom surface of the pressing plate. The measuring end of the measuring dial indicator contacts the upper surface of the pressing plate, and the axis of the measuring dial indicator is on the same vertical line as the center of the pressing block, for measuring the displacement distance of the pressing plate.

2. A tissue measurement device as in claim 1, wherein: The measuring dial indicator includes a dial, a connecting shaft, and a measuring shaft connected sequentially from top to bottom. The connecting shaft is slidably connected to the measuring plate, and the connecting shaft is provided with a locking element for fixing the position of the measuring dial indicator. The measuring shaft is vertically downward and fits against the upper surface of the lower pressure plate.

3. The tissue measuring device as described in claim 1, characterized in that: The upper surface of the base is a horizontal plane, and anti-slip textures are provided at the positions corresponding to the lower pressure block on the upper surface.

4. The tissue measuring device as described in claim 1, characterized in that: The cross-section of the pressure block is a trapezoid with a wider top and a narrower bottom, and the material of the pressure block is a biocompatible material.

5. The tissue measuring device as described in claim 1, characterized in that: The lower pressure plate is equipped with hand-held parts at both ends for easy operation.

6. The tissue measuring device as described in claim 1, characterized in that: The measuring range of the dial indicator is not less than the maximum travel distance of the pressing component.

7. A tissue measuring device as described in claim 1 or 4, characterized in that: The lower surface of the pressing block is either a plane or an arc-shaped surface that conforms to the contour of the tissue to be tested.

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