Pressure regulating knob device of pressure measuring instrument and medical eustachian tube pressure measuring instrument

Abstract

The utility model discloses a pressure regulating knob device of a pressure measuring instrument and a medical eustachian tube pressure measuring instrument, the pressure regulating knob device comprises a pressure regulator and a pressure regulating knob, the pressure regulating knob is provided with a pressure regulating cavity, and one end of the pressure regulator extends into the pressure regulating cavity and is connected to the inner wall of the pressure regulating knob; a buffer positioning mechanism is fixed in the pressure regulating knob and is positioned in the pressure regulating cavity, and at least part of the buffer positioning mechanism extends out of the pressure regulating cavity; a panel is arranged between the pressure regulator and the pressure regulating knob, a positioning part is arranged on the panel, a telescopic positioning piece is arranged on the buffer positioning mechanism, and when the positioning piece is matched with the positioning part, the positioning piece is in a stretching state; the panel is further provided with a pressure adjusting limiting mechanism used for limiting rotation of the pressure adjusting knob. And the pressure regulating limiting mechanism and the positioning part are positioned in an orthographic projection range of the pressure regulating knob on the panel. Damage and abrasion are not prone to occurring, and maintenance and use cost is low.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a pressure regulating knob device for a pressure measuring instrument and a medical Eustachian tube pressure measuring instrument. Background Technology

[0002] The pressure regulating knob of the medical Eustachian tube manometer is used to maintain a constant output pressure of gas within a certain pressure range. When the pressure exceeds the set value, the pressure regulator will automatically adjust the output pressure through the valve, thereby realizing the pressure regulation function.

[0003] The pressure regulating knob of the pressure measuring instrument is a manual type, consisting of a pressure regulating knob, a pressure limiting mechanism, a pressure regulator, and a buffer positioning mechanism. The pressure limiting mechanism is externally located on the upper left of the pressure regulating knob. The buffer positioning mechanism rotates clockwise from the right side of the external pressure limiting mechanism to the left side, achieving pressure adjustment from 0 to 50 mbar.

[0004] However, external buffer positioning mechanisms may be damaged or have their accuracy affected by accidental physical impacts during transportation or use, especially the impact force generated when reaching the limit point. Moreover, external buffer positioning mechanisms need to be in frequent contact with moving parts, and long-term use will lead to wear and tear, which will affect their limiting effect. In addition, mechanical parts may malfunction, causing the limit to fail, requiring inspection, maintenance or replacement of parts, increasing maintenance and usage costs. Utility Model Content

[0005] The purpose of this invention is to provide a pressure adjustment knob device for a pressure measuring instrument and a medical Eustachian tube pressure measuring instrument, so as to solve the problems of easy wear and damage of the pressure adjustment knob and high maintenance costs.

[0006] The technical solutions for achieving the above objectives include the following:

[0007] This utility model proposes a pressure regulating knob device for a pressure measuring instrument, including a pressure regulator and a pressure regulating knob. The pressure regulating knob has a pressure regulating cavity, and one end of the pressure regulator extends into the pressure regulating cavity and is connected to the inner wall of the pressure regulating knob.

[0008] A buffer positioning mechanism is fixed inside the pressure regulating knob. The buffer positioning mechanism is located inside the pressure regulating cavity and extends at least partially outside the pressure regulating cavity.

[0009] A panel is provided between the pressure regulator and the pressure adjustment knob. The panel is provided with a positioning part. The buffer positioning mechanism is provided with a retractable positioning member. When the positioning member is engaged with the positioning part, the positioning member is in an extended state; when the positioning member is disengaged from the positioning part, the positioning member is in a retracted state.

[0010] The panel is also provided with a pressure regulating limit mechanism for limiting the rotation of the pressure regulating knob;

[0011] The pressure regulating limit mechanism and the positioning part are located within the orthogonal projection range of the pressure regulating knob on the panel.

[0012] In one embodiment, the panel has a first groove, the surface of the first groove is smoothly transitioned to the surface of the panel, the first groove forms the positioning part, the buffer positioning mechanism includes a column, an elastic element and a pin, the column is fixed on the inner wall of the top of the pressure regulating knob, the elastic element is installed in the column, the first end of the pin is installed on the elastic element, the second end extends out of the pressure regulating knob, the second end of the pin cooperates with the first groove, and the pin forms the positioning part.

[0013] In one embodiment, the surface of the groove is spherical, and the second end of the pin is provided with a spherical protrusion.

[0014] In one embodiment, the panel is provided with a first sliding groove, the first groove is disposed in the first sliding groove, the pin slides in the first sliding groove, and the panel is also provided with a first stop block, the first stop block is at least partially located in the first sliding groove, and the first stop block forms the pressure regulating and limiting mechanism.

[0015] In one embodiment, the bottom surface of the first groove is a plane between every two first grooves.

[0016] In one embodiment, the panel is provided with an annular second slide groove, the outer wall of the second slide groove is provided with a plurality of second grooves, the second grooves extend radially outward along the second slide groove, the second grooves form the positioning part, the buffer positioning mechanism includes a cam and a telescopic rod movably mounted on the bottom of the cam, the cam is fixed on the pressure adjusting knob, the telescopic rod can extend outward or retract inward in the radial direction of the pressure adjusting knob, and the telescopic rod forms the positioning element.

[0017] In one embodiment, the telescopic rod is curved, there is a clearance between the telescopic rod and the bottom wall of the cam, and / or the surface of the second groove is arc-shaped, and the telescopic rod has an arc-shaped protrusion on the side opposite to the center of the second groove that mates with the second groove.

[0018] In one embodiment, a pressure gauge is also fixed on the panel. The pressure gauge is connected to the pressure regulator and is used to measure the pressure value adjusted by the pressure regulator through the pressure adjustment knob in real time.

[0019] This utility model also provides a medical eustachian tube pressure measuring instrument, which includes any of the above-mentioned pressure adjustment knob devices.

[0020] The technical solution provided by this utility model has the following advantages and effects:

[0021] By fixing a buffer positioning mechanism inside the pressure regulating knob and placing the positioning part and pressure regulating limit mechanism on the panel within the orthogonal projection range of the pressure regulating knob on the panel, a built-in, buffered pressure regulating knob device is achieved. The pressure regulating knob is not easily worn or damaged, and it can avoid the problems of equipment damage or affecting the accuracy of the equipment and increasing maintenance and use costs due to accidental physical impact during transportation or use, especially the impact force generated when reaching the limit point. Attached Figure Description

[0022] The accompanying drawings illustrate specific examples of the technical solutions described in this utility model, and together with the detailed embodiments, form part of the specification, serving to explain the technical solutions, principles, and effects of this utility model.

[0023] Unless otherwise specified or defined, the same reference numerals in different figures represent the same or similar technical features, and different reference numerals may be used to represent the same or similar technical features.

[0024] Figure 1 This is a schematic diagram of a medical eustachian tube manometer.

[0025] Figure 2 This is a cross-sectional view of the connection between the pressure adjustment knob and the pressure regulator.

[0026] Figure 3 A perspective view of the pressure regulating knob in the first embodiment of the pressure regulating knob device;

[0027] Figure 4 A cross-sectional view of the pressure regulating knob in the first embodiment of the pressure regulating knob device;

[0028] Figure 5 This is a cross-sectional view of the first embodiment of the pressure regulating knob device;

[0029] Figure 6 A top view of the panel of the first embodiment of the pressure regulating knob device;

[0030] Figure 7 This is a cross-sectional view of the panel of the first embodiment of the pressure regulating knob device;

[0031] Figure 8 A perspective view of the pressure regulating knob in the second embodiment of the pressure regulating knob device;

[0032] Figure 9A perspective view of the cam in the second embodiment of the pressure regulating knob device;

[0033] Figure 10 This is a cross-sectional view of a second embodiment of the pressure regulating knob device;

[0034] Figure 11 This is a top view of the panel of the second embodiment of the pressure regulating knob device.

[0035] Explanation of reference numerals in the attached figures:

[0036] 100. Pressure regulating knob device,

[0037] 10. Pressure regulator; 11. First port; 12. Second port; 13. Third port; 14. Fourth port; 15. Fifth port.

[0038] 20. Pressure regulating knob; 21. Pressure regulating chamber; 211. Upper chamber; 212. Lower chamber; 213. Hexagonal nut; 22. Buffer positioning mechanism; 220. Positioning component; 221. Column; 222. Elastic component; 223. Pin; 23. Cam; 231. Telescopic rod; 2311. Arc-shaped protrusion; 24. Clearance gap; 25. Protrusion; 28. Buckle.

[0039] 30. Panel; 31. Positioning part; 32. Pressure regulating and limiting mechanism; 33. First groove; 34. First slide groove; 35. First stop block; 36. Second slide groove; 37. Second groove; 38. Second baffle.

[0040] 200. Pressure gauge. Detailed Implementation

[0041] 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.

[0042] 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.

[0043] 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.

[0044] It should be noted that when a component is considered "fixed" to another component, it can be directly fixed to the other component or there can be an intervening component; when a component is considered "connected" to another component, it can be directly connected to the other component or there can be an intervening component; when a component is considered "mounted" on another component, it can be directly mounted on the other component or there can be an intervening component; when a component is considered "placed" on another component, it can be directly placed on the other component or there can be an intervening component.

[0045] To improve the durability of the pressure regulating knob device in a pressure measuring instrument and reduce maintenance costs, this invention changes the easily worn and damaged buffer positioning mechanism in the pressure regulating knob device from an external to an internal design, i.e., it is installed inside the pressure regulating knob. This prevents the buffer positioning mechanism from being impacted and provides protection. When the buffer positioning mechanism wears out and needs to be replaced, only the pressure regulating knob needs to be replaced, making the operation simple.

[0046] This embodiment provides a pressure adjustment knob device for use in medical pressure measuring instruments, such as medical Eustachian tube manometers. Figure 1 As shown, the pressure regulating knob device 100 includes a pressure regulator 10, a pressure regulating knob 20, and a panel 30. To facilitate understanding of the working principle of the pressure regulating knob device 100, Figure 1 The pressure gauge 200 is also shown. A panel 30 is located between the pressure regulator 10 and the pressure adjustment knob 20. The pressure regulator 10 has a first interface 11, a second interface 12, a third interface 13, a fourth interface 14, and a fifth interface 15. The first interface 11 is used to connect to the air pump assembly, the second interface 12 is used to connect to the airbag assembly, the third interface 13 is used to connect to the pressure reducing valve assembly, the fourth interface 14 is used to connect to the pressure relief valve assembly, and the fifth interface 15 is used to connect to the pressure gauge 200. The pressure gauge 200 is fixed to the panel 30 and is used to display the gas pressure flowing to the airbag assembly. Figure 2 As shown, the pressure regulating knob 20 has a pressure regulating chamber 21. One end of the pressure regulator 10 passes through the panel 30, extends into the pressure regulating chamber 21, and is connected to the pressure regulating knob 20. Specifically, the pressure regulating chamber 21 is divided into an upper chamber 211 and a lower chamber 212. Hexagonal nuts 213 are fixed in both the upper chamber 211 and the lower chamber 212. One end of the pressure regulator 10 extends into the pressure regulating chamber 21 and is threaded onto the hexagonal nut 213. When the pressure regulating knob 20 is rotated, it moves the push rod in the pressure regulator 10, thereby adjusting the gas pressure flowing to the airbag assembly. The pressure regulator 10 is a common component in pressure measuring instruments, and its working principle will not be described in detail here. It should be noted that the pressure regulating knob device of this invention can be used not only in medical pressure measuring instruments but also in pressure measuring instruments in other fields.

[0047] refer to Figures 3-11 The pressure regulating knob device 100 locks the gas pressure flowing to the airbag assembly by cooperating with the positioning part 31 provided on the panel 30 through a buffer positioning mechanism 22 installed in the pressure regulating knob 20. Specifically, the buffer positioning mechanism 22 is installed in the pressure regulating cavity 21 of the pressure regulating knob 20. The buffer positioning mechanism 22 is provided with a retractable positioning element 220, such as a positioning pin or positioning rod. The panel 30 is provided with a positioning part 31, such as a slot or groove. The positioning element 220 extends to the outside of the pressure regulating knob 20, that is, the positioning element 220 protrudes from the end of the pressure regulating knob 20. Therefore, when the pressure regulating knob 20 is rotated, the positioning element 220 slides on the panel 30. When the positioning element 220 slides to the positioning part 31, the positioning element 220 extends and engages with the positioning part 31, realizing the cooperation between the positioning element 220 and the positioning part 31, thereby making the gas pressure flowing to the airbag assembly a certain value, such as 20 mbar or 30 mbar.

[0048] The panel 30 is also provided with a pressure regulating limit mechanism 32, which restricts the rotation of the pressure regulating knob 20, that is, restricts the sliding of the positioning member 220 on the panel 30, and prevents damage to the pressure regulating knob device 100.

[0049] The pressure regulating limit mechanism 32 and the positioning part 31 of this utility model are both located within the orthographic projection range of the pressure regulating knob 20 on the panel 30. Neither the pressure regulating limit mechanism 32 nor the positioning part 31 is exposed outside the pressure regulating knob 20, that is, they are built-in. Compared with setting them on the outside of the pressure regulating knob 20, the pressure regulating knob device 100 is more durable and less prone to wear or damage.

[0050] Depending on the extension and retraction direction of the positioning member 220, the buffer positioning mechanism 22 of this utility model is divided into a hidden axial adjustment positioning mechanism and a hidden radial adjustment positioning mechanism.

[0051] The positioning element of the concealed axial adjustment and positioning mechanism extends and retracts axially with the pressure adjusting knob 20. Specifically, in one embodiment, as shown... Figure 3 , Figure 4 and Figure 5 As shown, the buffer positioning mechanism 22 includes a column 221, an elastic element 222, and a pin 223. The column 221 is fixed to the inner wall of the top of the pressure regulating knob 20. In some embodiments, the column 221 and the pressure regulating knob 20 can also be integrally manufactured. The elastic element 222 is located inside the column 221, abutting against the inner wall of the column 221, and sleeved on the first end of the pin 223. The second end of the pin 223 extends out of the pressure regulating knob 20, forming the positioning element 220. Figure 6 and Figure 7As shown, the panel 30 has multiple first grooves 33, which form positioning portions 31. To allow the pin 223 to engage with different first grooves 33, different gas pressures can be selected. The surface of the first groove 33 needs to smoothly transition with the surface of the panel 30. In this embodiment, the surface of the first groove 33 is spherical, and the second end of the pin 223 has a spherical protrusion. This makes the engagement between the first groove 33 and the pin 223 smoother. It should be noted that the specific shapes of the first groove and the second end of the pin are not limited to those in this embodiment; they can also be curved surfaces, arc surfaces, or other shapes.

[0052] When the pin 223 slides on the panel 30, the pin 223 is squeezed, which compresses the elastic element 222 and the pin 223 retracts into the column 221; when the pin 223 slides to the first groove 33 on the panel 30, under the action of the elastic force, the pin 223 extends outward and engages with the first groove 33.

[0053] To facilitate the sliding of the pin and protect the panel, in some embodiments, the panel 30 is further provided with a first groove 34, and a first recess 33 is located within the first groove 34. When the pin 223 slides within the first groove 34, the elastic element 222 is in a compressed state. When it slides to the position of the first recess 33, the pin 223 extends outward under the elastic force of the elastic element 222 and engages within the first recess 33. Furthermore, the bottom surface of the first groove 34 between every two first recesses 33 can be set as a plane, making the adjustment and rotation smoother.

[0054] The panel also features a first stop 35, forming a pressure regulating and limiting mechanism 32. Specifically, as shown... Figure 7 As shown, the cross-section of the first stop 35 is trapezoidal. When the first slide groove 34 is provided, the first stop 35 is at least partially located within the first slide groove 34. When the pin 223 slides to the position of the first stop 35, it will abut against the first stop 35, and the pressure adjusting knob 20 will not be able to continue rotating in the original direction.

[0055] The positioning element of the concealed radial adjustment positioning mechanism extends and retracts radially with the pressure adjusting knob 20. Specifically, in one embodiment, as shown... Figure 8 , Figure 9 , Figure 10As shown, a cam 23 is installed inside the pressure regulating knob 20. For example, a snap-fit ​​28 is fixed inside the pressure regulating knob 20, thereby engaging the cam 23 onto the pressure regulating knob 20. A telescopic rod 231 is provided at the bottom of the cam 23. The telescopic rod 231 can extend outward or retract inward in the radial direction of the pressure regulating knob 20, forming a positioning element 220. In this embodiment, the telescopic rod 231 is arc-shaped, and there is a clearance gap 24 between the telescopic rod 231 and the bottom wall of the cam 23. The telescopic rod 231 is similar to a pawl and is made of nylon or acetal polymer material, so that the telescopic rod 231 can extend outward or retract inward in the radial direction of the pressure regulating knob 20. Exemplarily, the telescopic rod 231 can also be a retractable pin fixed laterally on the cam 23. Figure 11 As shown, the panel 30 has an annular second groove 36, and the outer wall of the second groove 36 has a plurality of second grooves 37. The second grooves 37 extend in a direction away from the center of the second groove 36 to form a positioning part 31. In order to make the telescopic rod 231 cooperate more smoothly with the second grooves 37, the surface of the second grooves 37 in this embodiment is arc-shaped, and the side of the telescopic rod 231 away from the center of the second groove 36 is provided with an arc-shaped protrusion 2311 for cooperating with the second grooves 37.

[0056] A second baffle 38 is provided on the panel 30 near the second slide groove 36, forming a pressure regulating and limiting mechanism 32. A protrusion 25 is provided on the inner wall of the bottom of the pressure regulating knob 20. When the pressure regulating knob 20 is rotated to the corresponding position, the protrusion 25 abuts against the second baffle 38. At this time, the pressure regulating knob 20 cannot continue to rotate in the original direction.

[0057] In some embodiments, the panel 20 is provided with a pressure value indicator, which corresponds to the positioning part 31. That is, each positioning part 31 corresponds to a specific pressure value, such as 0 / 30 / 40 / 50 mbar, and this pressure value is displayed by the pressure value indicator. The top surface of the pressure regulating knob 20 is provided with an arrow mark, which points to the pressure value indicator to indicate the current gas pressure flowing to the airbag assembly.

[0058] In summary, by employing a built-in, buffered positioning mechanism, the mechanism effectively cushions impacts during transportation or use, preventing damage to the equipment, loss of accuracy, and increased maintenance and operating costs due to unexpected physical shocks, especially those occurring when reaching the limit points. Furthermore, when the buffer positioning mechanism wears out and needs replacement, only the pressure adjustment knob needs to be replaced, making operation simple and maintenance convenient.

[0059] When referencing drawings, new features are explained. To avoid redundant references to drawings that would make the description less concise, features already described will not be referenced again on the drawings if the description is clear.

[0060] The purpose of the above embodiments is to reproduce and derive the technical solution of this utility model by way of example, and to fully describe the technical solution, purpose and effect of this utility model. The purpose is to enable the public to have a more thorough and comprehensive understanding of the disclosed content of this utility model, and it is not intended to limit the protection scope of this utility model.

[0061] 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 pressure regulating knob device for a pressure measuring instrument, characterized in that, include: A pressure regulator and a pressure regulating knob, the pressure regulating knob having a pressure regulating cavity, one end of the pressure regulator extending into the pressure regulating cavity and connected to the inner wall of the pressure regulating knob; A buffer positioning mechanism is fixed inside the pressure regulating knob. The buffer positioning mechanism is located inside the pressure regulating cavity and extends at least partially outside the pressure regulating cavity. A panel is provided between the pressure regulator and the pressure adjustment knob. The panel is provided with a positioning part. The buffer positioning mechanism is provided with a retractable positioning member. When the positioning member is engaged with the positioning part, the positioning member is in an extended state; when the positioning member is disengaged from the positioning part, the positioning member is in a retracted state. The panel is also provided with a pressure regulating limit mechanism for limiting the rotation of the pressure regulating knob; The pressure regulating limit mechanism and the positioning part are located within the orthogonal projection range of the pressure regulating knob on the panel.

2. The pressure regulating knob device of the pressure measuring instrument as described in claim 1, characterized in that, The panel has a first groove, the surface of which smoothly transitions with the surface of the panel. The first groove forms the positioning part. The buffer positioning mechanism includes a column, an elastic element, and a pin. The column is fixed on the inner wall of the top of the pressure regulating knob. The elastic element is installed inside the column. The first end of the pin is installed on the elastic element, and the second end extends out of the pressure regulating knob. The second end of the pin cooperates with the first groove. The pin forms the positioning part.

3. The pressure regulating knob device of the pressure measuring instrument as described in claim 2, characterized in that, The surface of the first groove is spherical, and the second end of the pin is provided with a spherical protrusion.

4. The pressure regulating knob device of the pressure measuring instrument as described in claim 2, characterized in that, The panel is provided with a first sliding groove, the first groove is provided in the first sliding groove, the pin slides in the first sliding groove, and the panel is also provided with a first stop block, the first stop block is at least partially located in the first sliding groove, and the first stop block forms the pressure regulating and limiting mechanism.

5. The pressure regulating knob device of the pressure measuring instrument as described in claim 4, characterized in that, Between every two of the first grooves, the bottom surface of the first groove is a plane.

6. The pressure regulating knob device of the pressure measuring instrument as described in claim 1, characterized in that, The panel is provided with a second annular recessed groove, and the outer wall of the second groove is provided with a plurality of second grooves. The second grooves extend radially outward along the second groove and form the positioning part. The buffer positioning mechanism includes a cam and a telescopic rod movably mounted on the bottom of the cam. The cam is fixed on the pressure adjustment knob, and the telescopic rod can extend outward or retract inward in the radial direction of the pressure adjustment knob. The telescopic rod forms the positioning element.

7. The pressure regulating knob device of the pressure measuring instrument as described in claim 6, characterized in that, The telescopic rod is curved, and there is a clearance between the telescopic rod and the bottom wall of the cam. And / or, the surface of the second groove is arc-shaped, and the telescopic rod has an arc-shaped protrusion on the side opposite to the center of the second groove that cooperates with the second groove.

8. The pressure regulating knob device of the pressure measuring instrument as described in any one of claims 1-7, characterized in that, A pressure gauge is also fixed on the panel. The pressure gauge is connected to the pressure regulator and is used to measure the pressure value adjusted by the pressure regulator through the pressure adjustment knob in real time.

9. A medical eustachian tube manometer, characterized in that, It includes the pressure regulating knob device as described in any one of claims 1-8.

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