Negative pressure sampling adapter device

Abstract

The application provides a negative pressure sampling adapter device, which comprises a connector, the connector comprises a docking port, a probe introduction port and a negative pressure port, and the docking port, the probe introduction port and the negative pressure port are in communication with each other. The negative pressure sampling adapter device provided by the application can accurately control the sampling amount, is convenient to operate and is high in safety.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a negative pressure sampling adapter. Background Technology

[0002] Neurosurgical biopsy refers to the surgical removal of a small sample from the brain, spinal cord, or peripheral nerves for pathological examination to determine the nature of the lesion (such as tumor, infection, inflammation, etc.) and provide a basis for subsequent treatment. Neurosurgical biopsy devices typically consist of an inner cannula and an outer cannula, both with sampling ports. During sampling, the inner and outer cannulas are inserted into the target lesion area, and the sampling location is determined using acquired image information. After aligning the sampling ports on the inner and outer cannulas with the sampling location, the target sample is drawn into the inner cannula under negative pressure. The sample is then extracted by rotating the inner cannula. However, during the sampling process, it is difficult to effectively control the sample volume. Taking too much sample can easily cause brain damage or cerebral hemorrhage, posing a significant risk; taking too little sample can affect pathological interpretation and is inconvenient to use. Summary of the Invention

[0003] The purpose of this application is to provide a negative pressure sampling adapter to solve the technical problem of the inability to effectively control the sampling amount in the prior art.

[0004] To achieve the above objectives, the technical solution adopted in this application is: to provide a negative pressure sampling adapter, comprising: The connector includes a mating port, a probe inlet port, and a negative pressure port, wherein the mating port, the probe inlet port, and the negative pressure port are interconnected.

[0005] Optionally, the negative pressure sampling adapter further includes a control system, a display, and a negative pressure device. The display is electrically connected to the control system, and the negative pressure device is electrically connected to the control system and installed at the negative pressure port.

[0006] Optionally, the negative pressure sampling adapter further includes a negative pressure regulating valve, which is installed between the negative pressure port and the negative pressure device.

[0007] Optionally, the connector is configured as a T-type or a Y-type.

[0008] Optionally, the connector further includes an inner sleeve and an outer sleeve; The inner sleeve includes an inner tube and an inner sampling port. The inner tube is installed at the docking port, and the inner sampling port is opened in the inner tube. The outer tube includes an outer tube and an outer sampling port. The outer tube is fitted onto the inner tube, and the outer sampling port is opened in the outer tube and is correspondingly arranged with the inner sampling port.

[0009] Optionally, sealing rings are installed between the inner tube and the outer tube, between the docking port and the inner tube, between the probe inlet port and the optical probe, and between the negative pressure port and the negative pressure device.

[0010] Optionally, the negative pressure sampling adapter further includes a knob and an adjustment mechanism. The knob is rotatably engaged with the outer periphery of the inner tube. The adjustment mechanism includes a rotating sleeve, a housing, an active component, and multiple driven components. The rotating sleeve is engaged with the outer periphery of the knob. The housing is installed at the end of the rotating sleeve away from the connector and is fitted onto the outer periphery of the inner tube. The active component is installed inside the housing. The multiple driven components are installed between the active component and the outer tube and are configured to drive the outer tube to move axially via the active component.

[0011] Optionally, the outer shell has a plurality of strip-shaped waist-shaped holes, and the plurality of strip-shaped waist-shaped holes are evenly arranged around the axial direction along the circumferential direction; The active component includes a worm, a worm wheel, and multiple arc-shaped waist-shaped holes. The worm is rotatably mounted on the outer casing. The worm wheel is rotatably sleeved on the inner tube and meshes with the worm, and is located inside the outer casing. The multiple arc-shaped waist-shaped holes are all opened on the worm wheel and are arranged one-to-one with the multiple strip-shaped waist-shaped holes.

[0012] Optionally, the driven component includes a translation member and a rotating member. The translation member passes through the strip-shaped waist-shaped hole and the arc-shaped waist-shaped hole and is configured to move along the strip-shaped waist-shaped hole through the arc-shaped waist-shaped hole when the worm gear rotates about the axial direction. The rotating member is hinged between the outer tube and the translation member.

[0013] Optionally, the translation component includes a translation rod and an anti-detachment block. The translation rod passes through the strip-shaped waist-shaped hole and the arc-shaped waist-shaped hole, and the anti-detachment block is installed at the end of the translation rod near the rotating sleeve. The rotating component includes a first hinge seat, a second hinge seat, and a hinge rod. The first hinge seat is installed on the outer periphery of the outer tube, the second hinge seat is installed at the end of the translation component away from the rotating sleeve, and the hinge rod is hinged between the first hinge seat and the second hinge seat.

[0014] Optionally, the active component further includes an upper spacer ring and a lower spacer ring. The upper spacer ring is connected to the side of the worm gear facing the rotating sleeve and is sleeved on the inner tube, and is located between the outer shell and the worm gear. The lower spacer ring is connected to the side of the worm gear facing away from the upper spacer ring and is sleeved on the inner tube, and is located between the outer shell and the worm gear.

[0015] Optionally, the inner sleeve further includes an upper partition and a lower partition. The upper partition is connected to the outer periphery of the inner tube and is located at the end of the knob near the connector. The lower partition is connected to the outer periphery of the inner tube and is located at the end of the knob away from the connector.

[0016] Optionally, the adjustment mechanism further includes a snap-fit ​​element, which is sleeved on the inner tube and can snap the knob onto the upper partition.

[0017] Optionally, the snap-fit ​​component includes a chuck, a plurality of snap-fit ​​rods, and a plurality of snap-fit ​​slots. The chuck is sleeved on the inner tube and can slide axially relative to the inner tube, and is located between the connector and the upper partition. The plurality of snap-fit ​​rods are all connected to the chuck and can pass through the knob and the upper partition. The plurality of snap-fit ​​slots are all formed on the inner circumference of the chuck. The inner sleeve also includes multiple retaining strips, each of which is connected to the outer periphery of the inner sleeve and can be engaged with multiple retaining slots, and is configured to correspond one-to-one with each of the retaining slots.

[0018] Optionally, the adjustment mechanism further includes multiple pins, all of which pass through the knob and the rotating sleeve.

[0019] Optionally, the inner tube is provided with a simulated groove; The outer tube has a simulation port at the end furthest from the external sampling port, and is set up in correspondence with the simulation tank.

[0020] This application provides a negative pressure sampling adapter, which, depending on the sampling scenario, can be adapted to different sampling devices through a docking port, thus improving its applicability. Under the influence of the negative pressure port, it can connect with negative pressure equipment to provide negative pressure, thereby enabling precise control of the sample intake volume. Attached Figure Description

[0021] 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.

[0022] Figure 1 A perspective view of a negative pressure sampling adapter provided in Embodiment 1 of this application; Figure 2 A perspective view of a negative pressure sampling adapter provided in Embodiment 2 of this application; Figure 3 This is a cross-sectional view of a negative pressure sampling adapter provided in Embodiment 2 of this application; Figure 4 This is a first-view internal perspective view of a negative pressure sampling adapter provided in Embodiment 2 of this application; Figure 5 This is a second-view internal perspective view of a negative pressure sampling adapter device provided in Embodiment 2 of this application; Figure 6 for Figure 3 A magnified view of a section at point A in the middle; Figure 7 for Figure 3 A magnified view of a section at point B in the middle; Figure 8 for Figure 3 A magnified view of a section at point C; Figure 9 for Figure 2 A magnified view of a section at point D; Figure 10 for Figure 3 A magnified view of a section at point E in the middle.

[0023] The following are the labeling elements in the figure: 1. Inner sleeve; 11. Inner tube; 12. Inner sampling port; 13. Upper partition; 14. Lower partition; 15. Clamping strip; 16. Simulation tank; 2. Outer tube; 21. Outer tube; 22. External sampling port; 23. Simulation port; 3. Connector; 31. Dating port; 32. Probe inlet port; 33. Negative pressure port; 4. Knob; 5. Adjustment mechanism; 51. Rotating sleeve; 52. Housing; 53. Driving component; 531. Worm gear; 532. Worm wheel; 533. Arc-shaped waist-shaped hole; 534. Upper spacer ring; 535. Lower spacer ring; 536. Handle; 54. Driven component; 541. Translation component; 5411. Translation rod; 5412. Anti-detachment block; 542. Rotating component; 5421. First hinge seat; 5422. Second hinge seat; 5423. Hinge rod; 55. Strip-shaped waist-shaped hole; 56. Snap-fit ​​component; 561. Chuck; 562. Snap-fit ​​rod; 563. Slot; 57. Pin. Detailed Implementation

[0024] 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.

[0025] It should be noted that when a component is referred to as being "mounted to," "fixed to," or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0026] 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.

[0027] Furthermore, 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. Thus, 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.

[0028] Example 1 like Figure 1 As shown, this application provides a negative pressure sampling adapter, including a connector 3. The connector 3 includes a mating port 31, a probe inlet port 32, and a negative pressure port 33, which are interconnected.

[0029] This application provides a negative pressure sampling adapter, which, depending on the sampling scenario, can be adapted to different sampling devices via docking port 31, thus improving its applicability. Through the negative pressure port 33, it can connect to a negative pressure device, thereby providing negative pressure and enabling precise control of the sample intake.

[0030] In one embodiment of this application, please refer to Figure 1 A negative pressure sampling adapter also includes a control system (not shown in the figure), a display (not shown in the figure), and a negative pressure device (not shown in the figure). The display is electrically connected to the control system, and the negative pressure device is electrically connected to the control system and installed at the negative pressure port 33.

[0031] With this setup, the sampling image can be displayed via an external optical probe, under the control of the monitor. During the sampling process, the inner sampling port 12 and the outer sampling port 22 can be accurately aligned with the target sampling position, ensuring precise positioning.

[0032] In one embodiment of this application, please refer to the following: Figure 1 A negative pressure sampling adapter also includes a negative pressure regulating valve (not shown in the figure), which is installed between the negative pressure port 33 and the negative pressure device.

[0033] With this setup, the negative pressure in the inner tube 11 can be accurately controlled by the control system under the action of the negative pressure regulating valve, thereby accurately controlling the sampling amount, ensuring accurate sampling and convenient operation.

[0034] In one embodiment of this application, see reference Figure 1 The connector is set to T-type or Y-type.

[0035] This configuration, using a T-shaped or Y-shaped structure, allows the inner tube 11 to be connected to the external optical probe and negative pressure equipment simultaneously, resulting in a simple structure.

[0036] In one embodiment of this application, please refer to Figure 1 The connector 3 also includes an inner sleeve 1 and an outer sleeve 2. The inner sleeve 1 includes an inner tube 11 and an inner sampling port 12. The inner tube 11 is installed on the docking port 31, and the inner sampling port 12 is opened in the inner tube 11. The outer sleeve 2 includes an outer tube 21 and an outer sampling port 22. The outer tube 21 is sleeved on the inner tube 11, and the outer sampling port 22 is opened in the outer tube 21 and is correspondingly arranged with the inner sampling port 12.

[0037] This configuration allows for the installation of the inner tube 11 via the docking port 31, enabling a detachable connection and facilitating easy installation and maintenance. The probe inlet port 32 allows an external optical probe to be inserted into the inner tube 11 through the docking port 31. This provides visualization when the inner tube 1 and outer tube 2 are inserted into the body, facilitating the alignment of the inner sampling port 12 and outer sampling port 22 with the target sampling location and improving usability. The negative pressure port 33 provides a negative pressure environment for the inner tube 11 via an external negative pressure device, allowing samples to be drawn into the inner tube 11 from the inner sampling port 12 and outer sampling port 22. In summary, the connector 3 employs a multi-port design with a simple structure.

[0038] Alternatively, the inner tube 11 and the outer tube 21 may be made of stainless steel or titanium alloy.

[0039] Optionally, the mating port 31 is configured as a Luer connector.

[0040] This setup, using standardized components, improves the versatility of the device.

[0041] In one embodiment of this application, please refer to Figure 1A sealing ring (not shown in the figure) is installed between the inner tube 11 and the outer tube 21, between the docking port 31 and the inner tube 11, and between the negative pressure port 33 and the negative pressure equipment.

[0042] With this configuration, the gaps between the inner tube 11 and the outer tube 21, the gap between the docking port 31 and the inner tube 11, and the gap between the negative pressure port 33 and the negative pressure equipment can be sealed under the action of the sealing ring, thereby forming a stable negative pressure environment in the inner tube 11 and not interfering with the rotation of the inner tube 11.

[0043] Example 2 This embodiment is basically the same as Embodiment 1, except that: Figures 2 to 10 As shown, a negative pressure sampling adapter includes a knob 4 and an adjustment mechanism 5. The knob 4 is rotatably engaged with the outer periphery of the inner tube 11. The adjustment mechanism 5 includes a rotating sleeve 51, a housing 52, an active component 53, and multiple driven components 54. The rotating sleeve 51 is engaged with the outer periphery of the knob 4. The housing 52 is installed at the end of the rotating sleeve 51 away from the connector 3 and is fitted onto the outer periphery of the inner tube 11. The active component 53 is installed inside the housing 52. The multiple driven components 54 are all installed between the active component 53 and the outer tube 21 and are configured to drive the outer tube 21 to move axially via the active component 53.

[0044] It should be noted that the "above" and "below" axial directions refer to the bidirectional direction of the central axes of the inner tube 11 and the outer tube 21, as detailed below. Figure 2 The X-axis is shown in the figure.

[0045] This application provides a negative pressure sampling adapter. Under the action of the active component 53, multiple driven components 54 drive the outer tube 21 to move axially. When the outer tube 21 moves axially, the outer sampling port 22 on the outer tube 21 moves relative to the inner sampling port 12 on the inner tube 11, thereby adjusting the overlap area between the inner and outer sampling ports 12. This allows for control of the sampling volume, minimizing the risk of brain damage from excessive sampling and minimizing the risk of insufficient sampling affecting pathological diagnosis. The device is easy to adjust and improves usability. The knob 4 facilitates gripping the outer tube 21. When the inner tube 11 rotates relative to the outer tube 21, the inner sampling port 12 rotates relative to the outer sampling port 22, enabling convenient sample cutting. Rotating the inner tube 11 prevents relative rotational friction between the outer tube 21 and human tissue from causing tissue damage, effectively protecting the patient.

[0046] In one embodiment of this application, please refer to Figures 2 to 10The outer casing 52 has multiple slotted waist-shaped holes 55, which are evenly arranged circumferentially around the axial direction. The driving component 53 includes a worm 531, a worm wheel 532, and multiple arc-shaped waist-shaped holes 533. The worm 531 is rotatably mounted on the outer casing 52, and the worm wheel 532 is rotatably sleeved on the inner tube 11 and meshes with the worm 531, and is located inside the outer casing 52. The multiple arc-shaped waist-shaped holes 533 are all opened in the worm wheel 532 and are arranged one-to-one with the multiple slotted waist-shaped holes 55. The driven component 54 includes a translation member 541 and a rotating member 542. The translation member 541 passes through the slotted waist-shaped holes 55 and the arc-shaped waist-shaped holes 533, and is configured to move along the slotted waist-shaped holes 55 through the arc-shaped waist-shaped holes 533 when the worm wheel 532 rotates around the axial direction. The rotating member 542 is hinged between the outer tube 21 and the translation member 541.

[0047] With this configuration, the worm gear 531, through the worm wheel 532, can drive multiple arc-shaped waist-shaped holes 533 to rotate axially. The rotation of these holes, through the multiple strip-shaped waist-shaped holes 55, can cause the translational components 541 to converge towards each other or expand backwards. The translational components 541, through the multiple rotating components 542, can drive the outer tube 21 to move axially relative to the inner tube 11, facilitating adjustment. The combined action of the worm gear 531 and worm wheel 532 achieves deceleration and torque increase, thereby accurately adjusting the overlap area between the inner sampling port 12 and the outer sampling port 22. Furthermore, under the combined action of the worm gear 531 and worm wheel 532, after the outer tube 21's axial position is adjusted, it can self-lock, preventing axial movement of the outer tube 21 relative to the inner tube 11. This helps improve the structural stability between the outer tube 21 and the inner tube 11, preventing changes in sample volume caused by movement of the outer tube 21 relative to the inner tube 11.

[0048] Optionally, the active component 53 also includes a grip 536, which is connected to one end of the worm gear 531.

[0049] This design, with the grip 536 in place, makes it easier for the sampling personnel to rotate the worm gear 531, thus improving ease of use.

[0050] In one embodiment of this application, please refer to the following: Figures 2 to 10 The translation component 541 includes a translation rod 5411 and an anti-detachment block 5412. The translation rod 5411 passes through the strip-shaped waist hole 55 and the arc-shaped waist hole 533. The anti-detachment block 5412 is installed at one end of the translation rod 5411 near the rotating sleeve 51.

[0051] With this configuration, the translation rod 5411 can move along the strip-shaped waist-shaped hole 55 under the rotational action of the arc-shaped waist-shaped hole 533. The movement of the translation rod 5411 drives the rotating component 542 to rotate relative to the translation rod 5411, thereby causing the outer tube 21 to move axially relative to the inner tube 11. The anti-detachment block 5412 prevents the translation rod 5411 from detaching from the arc-shaped waist-shaped hole 533, helping to improve the structural stability between the translation rod 5411 and the worm gear 532.

[0052] In one embodiment of this application, see reference Figures 2 to 10 The rotating component 542 includes a first hinge seat 5421, a second hinge seat 5422, and a hinge rod 5423. The first hinge seat 5421 is installed on the outer periphery of the outer tube 21, the second hinge seat 5422 is installed on the end of the translation component 541 away from the rotating sleeve 51, and the hinge rod 5423 is hinged between the first hinge seat 5421 and the second hinge seat 5422.

[0053] With this configuration, under the action of the first hinge seat 5421 and the second hinge seat 5422, the hinge rod 5423 can be hinged between the translation rod 5411 and the outer tube 21. Under the action of the hinge rod 5423, when the translation rod 5411 moves relative to the strip-shaped hole 55, it can drive the outer tube 21 to move axially relative to the inner tube 11. Under the action of the second hinge seat 5422, the translation rod 5411 can be limited, preventing the translation rod 5411 from moving axially toward the knob 4, so that the translation rod 5411 can stably drive the hinge rod 5423 to rotate, which helps to improve the stability of adjustment.

[0054] In one embodiment of this application, please refer to Figures 2 to 10 The active component 53 also includes an upper spacer ring 534 and a lower spacer ring 535. The upper spacer ring 534 is connected to the side of the worm gear 532 facing the rotating sleeve 51 and is sleeved on the inner tube 11, and is located between the outer shell 52 and the worm gear 532. The lower spacer ring 535 is connected to the side of the worm gear 532 away from the upper spacer ring 534 and is sleeved on the inner tube 11, and is located between the outer shell 52 and the worm gear 532.

[0055] With this configuration, the worm gear 532 can be stably installed inside the housing 52 under the action of the upper spacer ring 534 and the lower spacer ring 535. This allows the worm gear 532 to rotate only around the axial direction, preventing the worm gear 532 from moving along the axial direction and causing changes in the axial position of the outer tube 21, which would affect the sampling. This helps to improve the structural stability between the worm gear 532 and the housing 52.

[0056] In one embodiment of this application, please refer to the following: Figures 2 to 10The inner tube 1 also includes an upper partition 13 and a lower partition 14. The upper partition 13 is connected to the outer periphery of the inner tube 11 and is located at the end of the knob 4 near the connector 3. The lower partition 14 is connected to the outer periphery of the inner tube 11 and is located at the end of the knob 4 away from the connector 3.

[0057] With this configuration, the upper partition 13 and the lower partition 14 can limit the knob 4, so that the knob 4 can only rotate relative to the inner tube 11. This helps to improve the structural stability between the knob 4 and the inner tube 11 and prevents the knob 4 from moving axially relative to the inner tube 11, which would affect the sampling.

[0058] In one embodiment of this application, see reference Figures 2 to 10 The adjustment mechanism 5 also includes a snap-fit ​​component 56, which is fitted onto the inner tube 11 and can snap the knob 4 onto the upper partition 13.

[0059] With this configuration, the knob 4 can be snapped onto the upper partition 13 by the snap-fit ​​component 56, preventing the inner sampling port 12 from being blocked when the knob 4 rotates relative to the inner tube 11 during adjustment, thus facilitating sampling.

[0060] In one embodiment of this application, please refer to Figures 2 to 10 The snap-fit ​​component 56 includes a chuck 561, multiple snap-fit ​​rods 562, and multiple snap-fit ​​slots 563. The chuck 561 is sleeved on the inner tube 11 and can slide axially relative to the inner tube 11, and is located between the connector 3 and the upper partition 13. The multiple snap-fit ​​rods 562 are all connected to the chuck 561 and can pass through the knob 4 and the upper partition 13. The multiple snap-fit ​​slots 563 are all formed on the inner circumference of the chuck 561. The inner tube 1 also includes multiple snap-fit ​​strips 15, which are all connected to the outer circumference of the inner tube 11 and can snap into the multiple snap-fit ​​slots 563, and are arranged one-to-one with the multiple snap-fit ​​slots 563.

[0061] This configuration, with the action of multiple locking rods 562, allows the knob 4 to be locked onto the upper partition 13, thus preventing the knob 4 from rotating relative to the upper partition 13. With the action of multiple locking strips 15 and multiple locking slots 563, the chuck 561 and the inner tube 11 can be locked together, facilitating the alignment of the multiple locking rods 562 with the locking holes (not shown in the figure) on the upper partition 13 and the knob 4, improving ease of use. Furthermore, with the action of multiple locking strips 15 and multiple locking slots 563, the chuck 561 can be locked onto the inner tube 11, and when the locking rods 562 lock the knob 4 onto the upper partition 13, it helps improve the structural stability between the chuck 561 and the inner tube 11.

[0062] In one embodiment of this application, please refer to the following: Figures 2 to 10 The adjustment mechanism 5 also includes multiple pins 57, which are all inserted through the knob 4 and the rotating sleeve 51.

[0063] With this configuration, the rotating sleeve 51 can be fixed to the outer periphery of the knob 4 by the action of multiple pins 57. The knob 4 and the rotating sleeve 51 can rotate synchronously, which is convenient for cutting samples. Furthermore, the rotating sleeve 51 and the knob 4 can be detachably connected by the pins 57, which is convenient for disassembly and installation and easy for maintenance.

[0064] In one embodiment of this application, see reference Figures 2 to 10 The inner tube 11 has a simulation groove 16. The outer tube 21 has a simulation port 23 at the end away from the external sampling port 22, and is set to correspond to the simulation groove 16.

[0065] With this setup, the simulation slot 16 and simulation port 23 can be used to simulate the relative position between the inner sampling port 12 and the outer sampling port 22. Sampling personnel can directly observe the relative position between the inner sampling port 12 and the outer sampling port 22 from the outside, thereby achieving visualization, facilitating adjustment, and improving ease of use.

[0066] The working principle of the negative pressure sampling adapter provided in this application is as follows: In use, the knob 4 is first snapped onto the upper partition 13 via the snap-fit ​​56, and the rotating sleeve 51 is snapped onto the knob 4 via the pin 57. The sampling personnel rotate the handle 536, which drives the worm gear 531 to rotate. The worm gear 531 drives the worm wheel 532 to rotate axially, and the multiple arc-shaped waist-shaped holes 533 rotate axially. Guided by the multiple arc-shaped waist-shaped holes 533, the multiple translation rods 5411 converge towards each other or extend away from each other along the multiple strip-shaped waist-shaped holes 55. The multiple translation rods 5411 drive the multiple hinge rods 5423 to rotate, ultimately driving the outer tube 21 to move axially. When the multiple translation rods 5411 converge towards each other, the outer tube 21 moves axially away from the knob 4; when the multiple translation rods 5411 extend away from each other, the outer tube 21 moves axially towards the knob 4. After adjustment, the external negative pressure device provides negative pressure to the inner tube 11 to draw the sample into the inner tube 11 from the outer sampling port 22 and the inner sampling port 12. The sampling personnel pull the locking piece 56, causing it to move axially toward the connector 3 until the locking rod 562 disengages from the upper partition 13. The sampling personnel hold the rotating sleeve 51 to fix the outer tube 21 and rotate the inner tube 11. As the inner tube 11 rotates relative to the outer tube 21, the inner sampling port 12 rotates relative to the outer sampling port 22, thus cutting the sample. After sampling, the negative pressure sampling adapter is disassembled and sterilized.

[0067] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.

Claims

1. A negative pressure sampling adapter, characterized in that, include: The connector includes a mating port, a probe inlet port, and a negative pressure port, wherein the mating port, the probe inlet port, and the negative pressure port are interconnected. The connector also includes an inner sleeve and an outer sleeve; The inner sleeve includes an inner tube and an inner sampling port. The inner tube is installed at the docking port, and the inner sampling port is opened in the inner tube. The outer tube includes an outer tube and an outer sampling port. The outer tube is fitted onto the inner tube, and the outer sampling port is opened in the outer tube and is correspondingly arranged with the inner sampling port. The negative pressure sampling adapter further includes a knob and an adjustment mechanism. The knob is rotatably engaged with the outer periphery of the inner tube. The adjustment mechanism includes a rotating sleeve, a housing, an active component, multiple driven components, and multiple pins. The rotating sleeve is engaged with the outer periphery of the knob. The housing is installed at the end of the rotating sleeve away from the connector and is sleeved on the outer periphery of the inner tube. The active component is installed inside the housing. The multiple driven components are installed between the active component and the outer tube and are configured to drive the outer tube to move axially through the active component. The multiple pins pass through the knob and the rotating sleeve.

2. The negative pressure sampling adapter as described in claim 1, characterized in that, The negative pressure sampling adapter further includes a control system, a display, and a negative pressure device. The display is electrically connected to the control system, and the negative pressure device is electrically connected to the control system and installed at the negative pressure port.

3. The negative pressure sampling adapter as described in claim 2, characterized in that, The negative pressure sampling adapter further includes a negative pressure regulating valve, which is installed between the negative pressure port and the negative pressure device.

4. The negative pressure sampling adapter as described in claim 1, characterized in that, The connector is configured as either T-type or Y-type.

5. The negative pressure sampling adapter as described in claim 1, characterized in that, The outer shell has multiple strip-shaped waist-shaped holes, which are evenly arranged around the axial direction along the circumferential direction. The active component includes a worm, a worm wheel, and multiple arc-shaped waist-shaped holes. The worm is rotatably mounted on the outer casing. The worm wheel is rotatably sleeved on the inner tube and meshes with the worm, and is located inside the outer casing. The multiple arc-shaped waist-shaped holes are all opened on the worm wheel and are arranged one-to-one with the multiple strip-shaped waist-shaped holes.

6. The negative pressure sampling adapter as described in claim 5, characterized in that, The driven component includes a translation member and a rotating member. The translation member passes through the strip-shaped waist-shaped hole and the arc-shaped waist-shaped hole and is configured to move along the strip-shaped waist-shaped hole through the arc-shaped waist-shaped hole when the worm gear rotates about the axis. The rotating member is hinged between the outer tube and the translation member.

7. The negative pressure sampling adapter as described in claim 5, characterized in that, The inner sleeve also includes an upper partition and a lower partition. The upper partition is connected to the outer periphery of the inner tube and is located at the end of the knob near the connector. The lower partition is connected to the outer periphery of the inner tube and is located at the end of the knob away from the connector.

8. The negative pressure sampling adapter as described in claim 7, characterized in that, The adjustment mechanism also includes a snap-fit ​​component, which is sleeved on the inner tube and can snap the knob onto the upper partition. The snap-fit ​​component includes a chuck, multiple snap-fit ​​rods, and multiple snap-fit ​​slots. The chuck is sleeved on the inner tube and can slide axially relative to the inner tube, and is located between the connector and the upper partition. The multiple snap-fit ​​rods are all connected to the chuck and can pass through the knob and the upper partition. The multiple snap-fit ​​slots are all opened on the inner circumference of the chuck. The inner sleeve also includes multiple retaining strips, each of which is connected to the outer periphery of the inner sleeve and can be engaged with multiple retaining slots, and is configured to correspond one-to-one with each of the retaining slots.

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