Nasal cavity structure measuring device

Abstract

The invention relates to the technical field of medical instruments, and provides a nasal cavity structure measuring device which comprises a protective shell; the measuring piece is of a slender strip-shaped structure made of shape memory alloy, and the measuring piece can be movably arranged in the protective shell in the axial direction of the protective shell; the far end of the measuring piece is in a folded state when located in the protective shell, and the far end of the measuring piece is in a released state after extending out of the protective shell. And the driving mechanism is arranged on the protective shell, is connected with the near end of the measuring piece and is used for driving the measuring piece to move. According to the nasal cavity structure measuring device, measurement can be conducted before an operation, the size of the internal space of the nasal meatus and the pathological structure are judged, and follow-up treatment is facilitated.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a nasal cavity structure measuring device. Background Technology

[0002] Inflammation of the nose and lacrimal ducts necessitates surgical treatment. Surgical treatment of the nasal cavity or lacrimal ducts primarily addresses secretory and purulent diseases. However, currently, there are no standardized medical measurement tools to record preoperative condition assessment, postoperative local granulation tissue proliferation, the size of the anastomosis after dacryocystorhinostomy, and the diameter of the lesion. Summary of the Invention

[0003] Therefore, the present invention aims to address the problem that there is no particularly standardized measuring tool in the prior art that can record preoperative condition assessment, postoperative local granulation tissue proliferation, measurement of the size of the anastomosis after dacryocystorhinostomy, and the diameter of the lesion, thereby providing a nasal cavity structure measuring device.

[0004] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0005] This invention provides a nasal cavity structure measuring device, comprising: a protective shell; a measuring element, the measuring element being a slender strip structure made of shape memory alloy, the measuring element being movably disposed within the protective shell along the axial direction of the protective shell; the distal end of the measuring element being in a retracted state when located within the protective shell, and in a released state when the distal end of the measuring element extends out of the protective shell; and a driving mechanism disposed on the protective shell and connected to the proximal end of the measuring element, for driving the measuring element to move.

[0006] Furthermore, the driving mechanism includes a rotating component and a sliding component; the proximal end of the protective shell is threadedly connected to the rotating component; the distal end of the sliding component is inserted into the protective shell, and the proximal end of the sliding component is inserted into the rotating component; a mounting hole is provided at the center of the sliding component, and the proximal end of the measuring component is disposed on the sliding component through the mounting hole; the rotating component rotates relative to the protective shell, driving the sliding component to move along the axial direction of the protective shell.

[0007] Furthermore, the outer wall of the slider is provided with a guide protrusion, and the inner wall of the protective shell is provided with a guide groove that matches the guide protrusion. The guide protrusion is engaged in the guide groove to restrict the slider from rotating relative to the protective shell.

[0008] Furthermore, the measuring element includes a plurality of measuring arms along the circumferential direction of the mounting hole.

[0009] Furthermore, the measuring element includes a first measuring arm and a second measuring arm; the first measuring arm and the second measuring arm are arranged 180° apart from each other within the mounting hole.

[0010] Furthermore, the distal end of each measuring arm is a smooth curved surface structure; the cross-sectional shape of the measuring arm is circular or hexagonal.

[0011] Furthermore, the nasal cavity structure measuring device also includes a restraint strap disposed between two adjacent measuring arms to limit the degree of opening and closing after the distal ends of the two adjacent measuring arms are released.

[0012] Furthermore, a positioning groove is provided on the inner side wall of the measuring arm, and the constraint band is wound around the measuring arm through the positioning groove.

[0013] Furthermore, the proximal end of the measuring element is provided with scale markings to indicate the depth to which the measuring element is inserted into the nasal cavity.

[0014] Furthermore, the protective shell is a transparent protective shell.

[0015] The technical solution of this invention has the following advantages:

[0016] The nasal cavity structure measuring device provided by this invention involves placing the measuring element inside a protective shell, which then retracts. The distal end of the retracted protective shell is placed into the nasal passage to be measured, and the measuring element is pushed inward. After a certain distance, the distal end of the measuring element is released, and the pushing continues. The patient's perception or a endoscopic examination determines whether the distal end of the measuring element is in contact with the inner wall. Once contact is made, the pushing stops. The device is then removed, and the nasal passage size data in that dimension is obtained by observing the open shape of the distal end of the measuring element. Subsequently, a new measurement point is selected along the circumferential direction of the nasal passage, and the above measurement operation is repeated until the ideal nasal passage size data is obtained. This setup allows for preoperative measurements to determine the size of the internal space of the nasal passage and the pathological structure, facilitating subsequent treatment. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a nasal cavity structure measuring device according to one embodiment of the present invention;

[0019] Figure 2This is a schematic diagram of a nasal cavity structure measuring device in another embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of a nasal cavity structure measuring device in another embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram showing the connection relationship between the rotating component and the protective shell in the nasal cavity structure measuring device of this invention.

[0022] Figure 5 This is a schematic diagram showing the connection relationship between the sliding component and the measuring component in the nasal cavity structure measuring device according to an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram showing the connection relationship between the constraint strap and the measuring arm in the nasal cavity structure measuring device of this invention.

[0024] Figure 7 This is a partial structural diagram of the measuring arm in the nasal cavity structure measuring device according to an embodiment of the present invention;

[0025] Figure 8 This is a schematic diagram of the mounting hole in the nasal cavity structure measuring device according to one embodiment of the present invention;

[0026] Figure 9 This is a schematic diagram of the mounting hole in the nasal cavity structure measuring device according to another embodiment of the present invention;

[0027] Figure 10 This is a schematic diagram of the mounting hole in the nasal cavity structure measuring device according to another embodiment of the present invention;

[0028] Figure 11 This is a schematic diagram showing the distribution of measuring arms in a nasal cavity structure measuring device according to one embodiment of the present invention;

[0029] Figure 12 This is a schematic diagram showing the distribution of the measuring arms in the nasal cavity structure measuring device in another embodiment of the present invention;

[0030] Figure 13 This is a schematic diagram showing the distribution of the measuring arms in the nasal cavity structure measuring device in another embodiment of the present invention;

[0031] Figure 14 This is a schematic diagram showing the distribution of the measuring arms in a nasal cavity structure measuring device according to another embodiment of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Protective shell; 2. Measuring component; 3. Rotating component; 4. Sliding component; 5. Mounting hole; 6. Constraint band; 7. Positioning groove. Detailed Implementation

[0034] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0037] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0038] like Figure 1 As shown, this embodiment provides a nasal cavity structure measuring device, including: a protective shell 1, which can be a sleeve-shaped structure; a measuring element 2, which is a slender strip structure made of shape memory alloy, the distal end of which is pre-shaped and heat-treated to shape its curvature and angle. For example, a suitable material can be selected in advance, placed in a mold, and heat-treated. After heat treatment, it is polished, sterilized, and then coated to ensure that the surface of the measuring element 2 is smooth and burr-free. The measuring element 2 is movably disposed within the protective shell 1 along the axial direction; when the distal end of the measuring element 2 is inside the protective shell 1, it is in a retracted state; when the distal end of the measuring element 2 extends out of the protective shell 1, it is in a released state; and a driving mechanism, disposed on the protective shell 1 and connected to the proximal end of the measuring element 2, is used to drive the measuring element 2 to move.

[0039] The nasal cavity structure measuring device provided in this embodiment is used by placing the measuring element 2 inside the protective shell 1, which then retracts. The distal end of the retracted protective shell 1 is placed into the nasal passage to be measured, and the measuring element 2 is pushed inward. After a certain distance, the distal end of the measuring element 2 is released, and then the pushing continues. The patient's perception or a endoscopic examination is used to determine whether the distal end of the measuring element 2 is in contact with the inner wall. Once it is in contact with the inner wall, the pushing of the measuring element 2 is stopped. The device is then removed, and the nasal passage size data in that dimension is obtained by observing the open shape of the distal end of the measuring element 2. Subsequently, a new measurement point is selected along the circumferential direction of the nasal passage, and the above measurement operation is repeated until the ideal nasal passage size data is obtained. This setup allows for preoperative measurements to determine the size of the internal space of the nasal passage and the pathological structure, facilitating subsequent treatment.

[0040] like Figure 4 , Figure 5 As shown, the driving mechanism includes a rotating component 3 and a sliding component 4. For example, both the rotating component 3 and the sliding component 4 can be sleeve-like structures. The proximal end of the protective shell 1 is connected to the rotating component 3 by a thread. The distal end of the sliding component 4 is inserted into the protective shell 1, and the proximal end of the sliding component 4 is inserted into the rotating component 3. The center of the sliding component 4 is provided with a mounting hole 5. The proximal end of the measuring component 2 is mounted on the sliding component 4 through the mounting hole 5. During measurement, when the measuring component 2 has only one measuring arm, it is necessary to measure the measuring arm multiple times in the circumferential direction of the nasal cavity to obtain complete internal nasal cavity size data.

[0041] like Figure 1 , Figure 2 , Figure 3 As shown, for example, the measuring element 2 includes multiple measuring arms along the circumferential direction of the mounting hole 5. In this case, multiple sets of data can be obtained in a single measurement along the circumferential direction of the nasal cavity. With this configuration, each additional measuring arm adds a dimension of measurement data in space, which helps improve measurement efficiency, makes the measurement space more three-dimensional, and the data more accurate.

[0042] For example, a pin can be provided on the inner wall of the mounting hole 5, and a socket can be provided on the measuring component 2. The mounting hole 5 and the measuring component 2 can be assembled by means of pin hole engagement so that the measuring component 2 can follow the movement of the sliding component 4. The rotating component 3 rotates relative to the protective shell 1 to drive the sliding component 4 to move along the axial direction of the protective shell 1.

[0043] The protective shell 1 can have external threads on its proximal outer wall, and the rotating part 3 can have internal threads on its inner wall, allowing for a threaded fit. When the rotating part 3 rotates, the distance between it and the protective shell 1 can be precisely controlled. For example, the proximal end of the rotating part 3 can have a stepped hole, and the proximal end of the sliding part 4 abuts against the edge of the stepped hole. The proximal end of the measuring part 2 can extend outward from the stepped hole into the rotating part 3. The inner diameter of the stepped hole is smaller than the outer diameter of the sliding part 4, thus holding the sliding part 4 in place and preventing it from falling off. When the rotating part 3 rotates, the sliding part 4 is forced to move with it.

[0044] like Figure 8 , Figure 9 as well as Figure 10 As shown, when the measuring component 2 includes multiple measuring arms, the cross-sectional shape of the measuring arms can be rectangular, square, semi-circular, or hexagonal. The mounting holes 5 within the sliding component 4 can be square, rectangular, I-shaped, or hexagonal. Different sliding components 4 can be replaced depending on the number of measuring arms included in the measuring component 2 and the cross-sectional shape of the measuring arms.

[0045] like Figure 8 , Figure 11 As shown, for example, when the measuring component 2 includes two measuring arms, and the cross-sectional shape of each measuring arm is rectangular, a sliding component 4 with a square mounting hole 5 can be selected.

[0046] For example, when the measuring component 2 contains two measuring arms, the cross-sectional shape of each measuring arm can be designed as a semi-circle. In this case, a sliding component 4 with a circular mounting hole 5 can be selected. During installation, the planes of the two pairs of measuring arms fit together and are not easily misaligned when placed in the mounting hole 5.

[0047] like Figure 9 , Figure 12 As shown, for example, when the measuring component 2 contains four measuring arms, and the cross-sectional shape of each measuring arm is square, a sliding component 4 with an I-shaped mounting hole 5 can be selected.

[0048] like Figure 10 , Figure 13 , Figure 14 As shown, for example, when two, three or more sets of measuring arms need to be set in the mounting hole 5, the mounting hole 5 of the slider 4 can be hexagonal, and the cross-sectional shape of the measuring arm is also designed as a hexagonal structure. At this time, each face of the measuring arm can fit together, so it is not easy to get tangled. At this time, the number of measuring points can also be increased, and the data is more accurate.

[0049] This design prevents the measuring arm from becoming misaligned or entangled within the protective housing 1. Additionally, a sliding element 4 can be installed near the distal or middle section of the protective housing 1. The difference between this sliding element 4 and the one installed at the drive unit is that the sliding element 4 at this location can be fixed within the protective housing 1 without sliding; it only uses its internal mounting holes 5 to guide and limit the measuring element 2.

[0050] In use, by setting the pitch of the rotating component 3, the distance traveled per revolution is calculated. By recording the number of revolutions of the rotating component 3, the depth of the measuring component 2 can be recorded. This setting allows for precise control and locking of each component, ensuring that even if the component moves, it will not cause errors in the data and thus guaranteeing the accuracy of the measurement data.

[0051] The outer wall of the sliding member 4 is provided with a guide protrusion extending along the axial direction of the sliding member 4. The inner wall of the protective shell 1 is provided with a guide groove that matches the guide protrusion and extends along the axial direction of the protective shell 1. The guide protrusion engages with the guide groove to restrict the rotation of the sliding member 4 relative to the protective shell 1. For example, two guide protrusions can be symmetrically arranged along the circumferential direction of the sliding member 4, and correspondingly, two guide grooves are also provided in the protective shell 1 to improve the limiting effect. With this arrangement, when the rotating member 3 rotates, the sliding member 4 can only move along the axial direction of the protective shell 1 under the limiting effect of the guide protrusion and guide groove, and cannot rotate. When the measuring member 2 includes multiple measuring arms, it can avoid the measuring arms from getting entangled, which would affect the measurement effect.

[0052] The measuring element 2 includes a first measuring arm and a second measuring arm; the first measuring arm and the second measuring arm are arranged at a distance of 180° from each other in the mounting hole 5.

[0053] The distal end of each measuring arm has a smooth curved surface structure; this design prevents soft tissue from being bruised when the measuring arm is released, effectively reducing damage to the patient's body.

[0054] like Figure 6 , Figure 7 As shown, the nasal cavity structure measuring device also includes a restraint strap 6, positioned between two adjacent measuring arms to limit the opening and closing degree of the distal ends of the two adjacent measuring arms after release. For example, a positioning groove 7 can be provided on the inner wall of the measuring arm, and the restraint strap 6 is wound around the measuring arm through the positioning groove 7. In this configuration, the restraint strap 6 connects the interconnected measuring arms, forming a fence-like structure. This allows for more accurate measurement data of the internal space of the tissue. Furthermore, after measurement, it can also cut away mucus and polyps within the tissue, effectively cleaning away excess material. For example, it can remove stubborn deposits such as polyps and mucus from the inner wall.

[0055] When the measuring component 2 includes three or more measuring arms, the constraint strap 6 can be wrapped around two adjacent measuring arms, or selected from two opposite measuring arms to form a cross connection. In use, for example, the length of the constraint strap can be adjusted by the number of wraps, or different lengths of constraint straps can be directly replaced.

[0056] The protective shell 1 is transparent. For example, the protective shell 1 can be made of a soft transparent material or a hard transparent material. This design, using a transparent material, facilitates observation of the position and release status of the measuring element 2. Alternatively, the protective shell 1 can also be made of a hard transparent material, or the transparent material can be used in specific areas.

[0057] The measuring element 2 has a scale marking on its proximal end to indicate the depth to which it extends into the nasal cavity. During use, the opening range of the measuring arm within the nasal cavity can be determined by observing the scale markings on the measuring arm. For example, the scale markings can be set according to the opening arc between the distal and middle parts of the measuring arm. Through prior simulation experiments and material pre-design, theoretical data can be used to derive predicted values ​​for the internal organs and tissues, enabling accurate understanding and reasonable judgment of the condition, and the development of effective treatment plans.

[0058] The device includes a display on the protective casing 1 and a built-in sensor, such as a photoelectric or inductive sensor, on the measuring component 2 to detect minute changes in its position and convert them into electrical signals. When the measuring component 2 moves, the built-in sensor converts its position into electronic signals. These electronic signals are amplified, filtered, and digitally converted before the measurement results are displayed on the screen. Through these steps, users can easily read the depth data of the measuring component 2 inserted into the nasal cavity.

[0059] In the specific examples above, an endoscope can also be used to assist in the surgery. If the internal condition of the tissue is found to be intact through the endoscope, the surgery is considered successful.

[0060] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A nasal cavity structure measuring device, characterized in that, include: Protective shell (1); Measuring element (2), the measuring element (2) is a slender strip structure made of shape memory alloy, the measuring element (2) is movable in the protective shell (1) along the axial direction of the protective shell (1); the distal end of the measuring element (2) is in a retracted state when it is inside the protective shell (1), and in a released state when the distal end of the measuring element (2) extends out of the protective shell (1); A drive mechanism is disposed on the protective shell (1) and connected to the proximal end of the measuring element (2) for driving the measuring element (2) to move.

2. The nasal cavity structure measuring device according to claim 1, characterized in that, The driving mechanism includes a rotating component (3) and a sliding component (4); The near end of the protective shell (1) is connected to the rotating part (3) by a thread; The distal end of the slider (4) is inserted into the protective shell (1), and the proximal end of the slider (4) is inserted into the rotating part (3); the center of the slider (4) is provided with a mounting hole (5), and the proximal end of the measuring part (2) is mounted on the slider (4) through the mounting hole (5); The rotating member (3) rotates relative to the protective shell (1) to drive the sliding member (4) to move along the axial direction of the protective shell (1).

3. The nasal cavity structure measuring device according to claim 2, characterized in that, The outer wall of the slider (4) is provided with a guide protrusion, and the inner wall of the protective shell (1) is provided with a guide groove that matches the guide protrusion. The guide protrusion is inserted into the guide groove to restrict the slider (4) from rotating relative to the protective shell (1).

4. The nasal cavity structure measuring device according to claim 2, characterized in that, The measuring element (2) includes a plurality of measuring arms along the circumferential direction of the mounting hole (5).

5. The nasal cavity structure measuring device according to claim 4, characterized in that, The measuring component (2) includes a first measuring arm and a second measuring arm; The first measuring arm and the second measuring arm are set 180° apart from each other in the mounting hole (5).

6. The nasal cavity structure measuring device according to claim 4, characterized in that, The distal end of each of the measuring arms is a smooth curved surface structure; The cross-sectional shape of the measuring arm is circular or hexagonal.

7. The nasal cavity structure measuring device according to claim 4, characterized in that, It also includes a constraint band (6) disposed between two adjacent measuring arms to limit the degree of opening and closing after the distal ends of the two adjacent measuring arms are released.

8. The nasal cavity structure measuring device according to claim 7, characterized in that, The inner wall of the measuring arm is provided with a positioning groove (7), and the constraint band (6) is wrapped around the measuring arm through the positioning groove (7).

9. The nasal cavity structure measuring device according to claim 1, characterized in that, The proximal end of the measuring element (2) is provided with scale markings to indicate the depth to which the measuring element (2) extends into the nasal cavity.

10. The nasal cavity structure measuring device according to claim 1, characterized in that, The protective shell (1) is a transparent protective shell (1).

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