Internal medicine thoracoscope puncture outfit cannula

Abstract

The utility model relates to an internal medicine thoracoscope puncture outfit cannula. The internal medicine thoracoscope puncture outfit cannula comprises a puncture cannula body, the side wall of the puncture cannula body is provided with a limiting structure, the limiting structure comprises a movable sleeve and a sliding groove, the sliding groove is formed in the puncture cannula body in the axial direction of the puncture cannula body, and the movable sleeve is sleeved with the sliding groove. The movable sleeve is arranged on the puncture cannula body in a sleeving mode and can move along the sliding groove, a plurality of limiting holes are formed in the sliding groove in the axial direction of the puncture cannula body at intervals, and a locking structure capable of stretching into and stretching out of the limiting holes is arranged on the movable sleeve. And when the locking structure extends into the limiting hole, the movable sleeve and the puncture cannula body are relatively locked. According to the scheme, the puncture depth can be conveniently controlled.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a cannula for an internal medicine thoracoscopic puncture device. Background Technology

[0002] Thoracentesis is a common clinical treatment method, traditionally performed directly using flexible trocars of various sizes. These cannulas have sharp, pointed tips, and the physician inserts them into the effusion site based on a sense of resistance. During the procedure, the needle tip can puncture lung tissue due to the advancement of the cannula or lung respiration, with serious consequences. Therefore, based on years of clinical experience, most thoracentesis accidents are caused by improper needle selection or technique. The depth of puncture is paramount; an appropriate depth will prevent lung tissue injury, too shallow a depth will fail to reach the effusion site, and too deep a depth will injure the lung tissue.

[0003] In related techniques, medical staff often rely on experience to perform punctures, making it difficult to control the depth of the puncture. Utility Model Content

[0004] To address or partially address the problems existing in related technologies, this application provides a thoracoscopic puncture cannula that facilitates control of puncture depth.

[0005] This application provides a thoracoscopic trocar cannula, comprising: a trocar cannula body, wherein a limiting structure is provided on the side wall of the trocar cannula body, the limiting structure including a movable sleeve and a sliding groove, the sliding groove being opened on the trocar cannula body along the axial direction, the movable sleeve being fitted on the trocar cannula body and being movable along the sliding groove, wherein a plurality of limiting holes are provided at intervals along the axial direction of the trocar cannula body in the sliding groove, and the movable sleeve being provided with a locking structure that can extend into and extend out of the limiting holes, wherein when the locking structure extends into the limiting holes, the movable sleeve is locked relative to the trocar cannula body.

[0006] Furthermore, the puncture cannula body is provided with scale lines, and the movable sleeve is provided with an observation window that is positioned opposite to the scale lines.

[0007] Furthermore, the locking structure includes a transmission box disposed on the movable sleeve, a sliding rod slidably connected to the transmission box, and an elastic member disposed between the sliding rod and the transmission box. The sliding rod passes through the transmission box, and one end of the sliding rod can extend into and out of the limiting hole. The force exerted by the elastic member on the sliding rod is directed towards the limiting hole.

[0008] Furthermore, the elastic element is a compression spring, and a sliding plate is provided at one end of the sliding rod near the limiting hole. The sliding plate is located inside the transmission box and is slidably connected to the transmission box. One end of the elastic element abuts against the sliding plate, and the other end of the elastic element abuts against the inner wall of the transmission box.

[0009] Furthermore, a slider is provided at one end of the sliding rod near the limiting hole. The slider is slidably connected to the sliding groove. A limiting block matching the limiting hole is provided at the end of the slider. The limiting block can extend into the limiting hole.

[0010] Furthermore, a pull block is provided at the end of the sliding rod that is away from the limiting hole.

[0011] Furthermore, one end of the puncture cannula body is provided with a collection structure, the collection structure including a temporary storage box, a storage box on the temporary storage box, a drain port on the storage box, a one-way valve between the temporary storage box and the storage box, the temporary storage box and the storage box being connected through the one-way valve, and the temporary storage box being connected to the inner cavity of the puncture cannula body.

[0012] Furthermore, the temporary storage box is provided with a fixing plate, and the fixing plate is provided with a clamping hole for clamping the puncture needle. The inner cavity of the puncture cannula body, the temporary storage box and the clamping hole are connected in sequence.

[0013] Furthermore, the storage box is equipped with a monitoring window made of transparent material.

[0014] Furthermore, the end of the movable sleeve facing away from the temporary storage box is provided with an overflow prevention cover.

[0015] The technical solution provided in this application may include the following beneficial effects: by moving the movable sleeve fitted on the puncture cannula body along the slide groove, the position of the movable sleeve on the puncture cannula body is adjusted. When the movable sleeve moves to the corresponding position along the axis of the puncture cannula body, the locking structure extends into the limiting hole, locking the movable sleeve and the puncture cannula body relative to each other. This allows adjustment of the length of the end of the puncture cannula body used for puncturing the pleural cavity that extends out of the movable sleeve. During puncture, the movable sleeve is located outside the human body, and one end of the puncture cannula body extends into the human pleural cavity, thereby allowing adjustment of the depth of the puncture cannula body puncturing into the pleural cavity.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0017] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0018] Figure 1 This is a schematic diagram of the structure of the thoracoscopic trocar cannula shown in the embodiments of this application;

[0019] Figure 2 This is another structural schematic diagram of the cannula for medical thoracoscopic puncture, as shown in the embodiments of this application;

[0020] Figure 3 This is a cross-sectional schematic diagram of the puncture cannula body shown in the embodiments of this application;

[0021] Figure 4 This is a schematic diagram of the movable sleeve and locking structure shown in the embodiments of this application.

[0022] Figure label:

[0023] 1. Puncture cannula body; 2. Temporary storage box; 3. Fixed plate; 4. Storage box; 5. Drain port; 6. One-way valve; 7. Moving sleeve; 8. Observation window; 9. Overflow cover; 10. Slide groove; 11. Limiting hole; 12. Transmission box; 13. Sliding plate; 14. Sliding rod; 15. Elastic element; 16. Sliding block; 17. Limiting block; 18. Scale line; 19. Pull block. Detailed Implementation

[0024] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.

[0025] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. 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.

[0026] In the description of this application, 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, and 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, and therefore should not be construed as a limitation of this application.

[0027] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0028] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0029] like Figures 1 to 4 As shown in the figure, this application provides a thoracoscopic puncture device cannula, including a puncture cannula body 1. The side wall of the puncture cannula body 1 is provided with a limiting structure, which includes a movable sleeve 7 and a sliding groove 10. The sliding groove 10 is opened on the puncture cannula body 1 along the axial direction. The movable sleeve 7 is sleeved on the puncture cannula body 1 and can move along the sliding groove 10. Multiple limiting holes 11 are provided at intervals along the axial direction of the puncture cannula body 1 in the sliding groove 10. Neither the limiting holes 11 nor the sliding groove 10 penetrates the side wall of the puncture cannula body 1. The movable sleeve 7 is provided with a locking structure that can extend into and out of the limiting holes 11. When the locking structure extends into the limiting holes 11, it locks the movable sleeve 7 relative to the puncture cannula body 1.

[0030] Specifically, when it is necessary to adjust the position of the movable sleeve 7 on the puncture cannula body 1, the locking structure extends out of the limiting hole 11, allowing the movable sleeve 7 to move along the sliding groove 10, thereby adjusting the position of the movable sleeve 7 in the axial direction of the puncture cannula body 1; when the movable sleeve 7 is adjusted to the corresponding position, the locking structure extends into the limiting hole 11, locking the movable sleeve 7 relative to the puncture cannula body 1. Figure 1 and Figure 2 As shown, the axis of the puncture cannula body 1 is the left-right direction as shown in the figure. The part of the puncture cannula body 1 located on the left side of the movable sleeve 7 is used to insert into the thoracic cavity of the human body, while the remaining part of the puncture cannula body 1 and the movable sleeve 7 are located outside the human body.

[0031] By moving the movable sleeve 7, which is fitted onto the puncture cannula body 1, along the slide groove 10, the position of the movable sleeve 7 on the puncture cannula body 1 can be adjusted. When the movable sleeve 7 moves to the corresponding position along the axis of the puncture cannula body 1, the locking structure extends into the limiting hole 11, locking the movable sleeve 7 relative to the puncture cannula body 1. This allows adjustment of the length of the end of the puncture cannula body 1 used for puncture into the thoracic cavity extending out of the movable sleeve 7, i.e., adjusting the length of the puncture cannula body 1 located on the left side of the movable sleeve 7. During puncture, the movable sleeve 7 is located outside the human body, and one end of the puncture cannula body 1 extends into the human thoracic cavity, thereby allowing adjustment of the depth of the puncture cannula body 1 puncture into the thoracic cavity.

[0032] In some embodiments, the puncture cannula body 1 is provided with scale lines 18, and the movable sleeve 7 is provided with an observation window 8 opposite to the scale lines 18. Specifically, the scale lines 18 can be equally spaced on the puncture cannula body 1 to indicate the distance the movable sleeve 7 moves. The observation window 8 facilitates observation of the scale lines 18, thereby facilitating the determination of the distance the movable sleeve 7 has moved.

[0033] In some embodiments, as Figures 1 to 4 As shown, the locking structure includes a transmission box 12 disposed on the movable sleeve 7, a sliding rod 14 slidably connected to the transmission box 12, and an elastic element 15 disposed between the sliding rod 14 and the transmission box 12. The sliding rod 14 passes through the transmission box 12, and one end of the sliding rod 14 can extend into and out of the limiting hole 11. The force exerted by the elastic element 15 on the sliding rod 14 is directed toward the limiting hole 11.

[0034] Specifically, one end of the sliding rod 14 passes through the transmission box 12 and the movable sleeve 7, and then extends into the limiting hole 11 from the slide groove 10, thereby restricting the movement of the movable sleeve 7 along the slide groove 10. The elastic force of the elastic element 15 keeps one end of the sliding rod 14 inserted into the limiting hole 11. Pulling the other end of the sliding rod 14 can compress the elastic element 15, thereby causing the sliding rod 14 to extend out of the limiting hole 11.

[0035] In some embodiments, as Figure 4 As shown, the elastic element 15 is a compression spring. A sliding plate 13 is provided at one end of the sliding rod 14 near the limiting hole 11. The sliding plate 13 is located inside the transmission box 12 and is slidably connected to the transmission box 12. One end of the elastic element 15 abuts against the sliding plate 13, and the other end of the elastic element 15 abuts against the inner wall of the transmission box 12. Specifically, the elastic element 15 is sleeved on the sliding rod 14.

[0036] In some embodiments, as Figure 4As shown, a slider 16 is provided at one end of the sliding rod 14 near the limiting hole 11. The slider 16 is slidably connected to the sliding groove 10. A limiting block 17 matching the limiting hole 11 is provided at the end of the slider 16. The limiting block 17 can extend into the limiting hole 11. The slider 16 can restrict the rotation of the moving sleeve 7 relative to the puncture cannula body 1. The limiting block 17 extending into the limiting hole 11 locks the moving sleeve 7 relative to the puncture cannula body 1.

[0037] Specifically, the sliding plate 13 is fixedly connected to the sliding rod 14. When the movable sleeve 7 is not moving, the elastic element 15 allows the sliding plate 13 to contact the inner wall of the work box, causing the slider 16 to drive the limiting block 17 into the movable sleeve 7. The slider 16 contacts the slide groove 10, and the limiting block 17 abuts against the limiting hole 11, thereby limiting the movable sleeve 7. When it is necessary to move the movable sleeve 7, the sliding rod 14 is pulled, the elastic element 15 is compressed, and the sliding rod 14 drives the sliding plate 13 to slide in the transmission box 12, with the slider 16 following. The sliding plate 13 moves, causing the limiting block 17 to move until the limiting block 17 moves out of the limiting hole 11. At this time, the slider 16 has not moved out of the slide groove 10, and the moving sleeve 7 can be moved. The moving sleeve 7 slides in the slide groove 10 through the slider 16 to prevent the moving sleeve 7 from deviating when moving. After moving to the predetermined position, the sliding rod 14 is released, the elastic element 15 is reset, the sliding plate 13 drives the sliding rod 14 to move, and the slider 16 drives the limiting block 17 to move with it. The limiting block 17 enters the limiting hole 11 to limit the moving sleeve 7.

[0038] In some embodiments, as Figures 1 to 4 As shown, a pull block 19 is provided at one end of the sliding rod 14 away from the limiting hole 11, which facilitates the pulling of the sliding rod 14.

[0039] In some embodiments, as Figures 1 to 3 As shown, one end of the puncture cannula body 1 is provided with a collection structure, which includes a temporary storage box 2, a storage box 4 on the temporary storage box 2, a drain port 5 on the storage box 4, a one-way valve 6 between the temporary storage box 2 and the storage box 4, and the temporary storage box 2 and the storage box 4 are connected through the one-way valve 6. The temporary storage box 2 is connected to the inner cavity of the puncture cannula body 1.

[0040] Specifically, when pleural effusion overflows, it spills into the temporary storage box 2, and then enters the storage box 4 through the one-way valve 6 on the storage box 4. The one-way valve 6 can prevent the pleural effusion from flowing back. After the storage box 4 has finished collecting, it can be discharged through the drain port 5.

[0041] In some embodiments, as Figures 1 to 3As shown, the temporary storage box 2 is equipped with a fixing plate 3, which has a clamping hole for holding the puncture needle. The inner cavity of the puncture cannula body 1, the temporary storage box 2, and the clamping hole are connected in sequence. Specifically, the puncture needle can be fixed by the fixing plate 3. The puncture needle passes through the clamping hole, the temporary storage box 2, and the inner cavity of the puncture cannula body 1 in sequence. A sealing structure such as a rubber sealing ring can be installed in the clamping hole to fit tightly with the puncture needle.

[0042] In some embodiments, the storage box 4 is provided with a monitoring window made of transparent material. Specifically, the monitoring window is located on the side wall of the storage box 4, allowing for easy observation of the collection process inside the storage box 4.

[0043] In some embodiments, as Figure 1 and Figure 2 As shown, the end of the movable sleeve 7 facing away from the temporary storage box 2 is equipped with an overflow shield 9. The overflow shield 9 can be made of flexible material and comes into contact with the surface of the human body at the puncture site during puncture to prevent gas from leaking out.

[0044] In summary, this application provides a thoracoscopic trocar cannula. During operation, the puncture distance is first adjusted according to the actual situation. Pulling the sliding rod 14 causes the sliding plate 13 to slide, and the limiting block 17 moves with the sliding plate 13 until it exits the limiting hole 11. The sliding slider 16 moves within the groove 10, adjusting the movement distance of the moving sleeve 7. The movement distance can be determined by the interaction between the observation window 8 and the scale line 18. After determining the distance, the sliding rod 14 is released, the elastic element 15 returns to its original position, and the sliding plate 13 and... The transmission box 12 abuts against the side wall, and the limiting block 17 enters the limiting hole 11 to limit the movement sleeve 7. The puncture needle is fixed by the fixing plate 3. The puncture needle passes through the temporary storage box 2 and the puncture cannula body 1, and the tip of the puncture needle is exposed for puncture. The puncture cannula body 1 enters the pleural cavity. If there is pleural effusion, the pleural effusion will enter the temporary storage box 2 through the puncture cannula body 1, and then enter the storage box 4 through the one-way valve 6 for storage. It will not come into contact with medical staff. After the pleural effusion is full, it can be drained through the drainage port 5.

[0045] The solution of this application has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have different focuses; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also understand that the actions and modules involved in the specification are not necessarily essential to this application. Furthermore, it is understood that the steps in the method of this application embodiment can be adjusted, combined, and deleted according to actual needs, and the modules in the device of this application embodiment can be combined, divided, and deleted according to actual needs.

[0046] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A thoracoscopic trocar cannula, characterized in that, include: The puncture cannula body (1) has a limiting structure on its side wall. The limiting structure includes a movable sleeve (7) and a sliding groove (10). The sliding groove (10) is opened on the puncture cannula body (1) along the axial direction of the puncture cannula body (1). The movable sleeve (7) is sleeved on the puncture cannula body (1) and can move along the sliding groove (10). The sliding groove (10) has a plurality of limiting holes (11) spaced apart along the axial direction of the puncture cannula body (1). The movable sleeve (7) is provided with a locking structure that can extend into and out of the limiting holes (11). When the locking structure extends into the limiting holes (11), it locks the movable sleeve (7) relative to the puncture cannula body (1).

2. The thoracoscopic trocar cannula according to claim 1, characterized in that: The puncture cannula body (1) is provided with a scale line (18), and the movable sleeve (7) is provided with an observation window (8) opposite to the scale line (18).

3. The thoracoscopic trocar cannula according to claim 1, characterized in that: The locking structure includes a transmission box (12) disposed on the movable sleeve (7), a sliding rod (14) slidably connected to the transmission box (12), and an elastic element (15) disposed between the sliding rod (14) and the transmission box (12). The sliding rod (14) passes through the transmission box (12), and one end of the sliding rod (14) can extend into and out of the limiting hole (11). The force exerted by the elastic element (15) on the sliding rod (14) is directed toward the limiting hole (11).

4. The thoracoscopic trocar cannula according to claim 3, characterized in that: The elastic element (15) is a compression spring. The sliding rod (14) has a sliding plate (13) at one end near the limiting hole (11). The sliding plate (13) is located inside the transmission box (12) and is slidably connected to the transmission box (12). One end of the elastic element (15) abuts against the sliding plate (13), and the other end of the elastic element (15) abuts against the inner wall of the transmission box (12).

5. The thoracoscopic trocar cannula according to claim 3, characterized in that: The sliding rod (14) has a slider (16) at one end near the limiting hole (11). The slider (16) is slidably connected to the slide groove (10). The end of the slider (16) is provided with a limiting block (17) that matches the limiting hole (11). The limiting block (17) can extend into the limiting hole (11).

6. The thoracoscopic trocar cannula according to claim 3, characterized in that: The sliding rod (14) has a pull block (19) at the end opposite to the limiting hole (11).

7. The thoracoscopic trocar cannula according to claim 1, characterized in that: One end of the puncture cannula body (1) is provided with a collection structure, the collection structure includes a temporary storage box (2), the temporary storage box (2) is provided with a storage box (4), the storage box (4) is provided with a drain port (5), a one-way valve (6) is provided between the temporary storage box (2) and the storage box (4), the temporary storage box (2) and the storage box (4) are connected through the one-way valve (6), and the temporary storage box (2) is connected to the inner cavity of the puncture cannula body (1).

8. The thoracoscopic trocar cannula according to claim 7, characterized in that: The temporary storage box (2) is provided with a fixing plate (3), and the fixing plate (3) is provided with a clamping hole for clamping the puncture needle. The inner cavity of the puncture cannula body (1), the temporary storage box (2) and the clamping hole are connected in sequence.

9. The thoracoscopic trocar cannula according to claim 7, characterized in that: The storage box (4) is equipped with a monitoring window made of transparent material.

10. The thoracoscopic trocar cannula according to claim 7, characterized in that: The movable sleeve (7) is provided with an overflow cover (9) at the end away from the temporary storage box (2).

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