Drainage tube with spiral grooves

Abstract

The present application discloses a drainage tube with a spiral groove, and relates to the technical field of drainage tubes. The present application comprises: a tube body, on which a connecting tube is installed, the connecting tube is used to connect with a negative pressure balloon, and a spiral groove is provided in the tube body; a connecting member is installed on the connecting tube, and the connecting member comprises a connecting rod and a clamping plate, the connecting rod is hinged on the connecting tube, and the clamping plate is hinged with the connecting rod. When the present application is used, the negative pressure balloon and the connecting tube are not only connected by friction between them, but also by the resistance of the limiting rod to the clamping plate, which further increases the friction between the two, making the device more stable when used, and when the sliding plate drives the limiting rod to resist the clamping plate, it also drives the hook plate to engage with the protrusion, and the sliding of the sliding plate is restricted, so that the limiting rod always resists the clamping plate, which increases the stability of the device when used and reduces the possibility of the tube body falling off when used.

Description

Technical Field

[0001] The present application relates to the technical field of drainage tubes, and in particular to a drainage tube with spiral grooves. Background Art

[0002] The drainage tube is a commonly used postoperative instrument, which is mainly used to guide pus, blood or other fluids accumulated in human tissues or body cavities to the outside of the body to prevent postoperative infection and promote wound healing. When in use, the drainage tube needs to be connected to the negative pressure balloon to facilitate drainage.

[0003] The existing drainage tube is directly put on the outside of the negative pressure balloon, and the two are connected only by friction. The connection strength is low. When sampling the drainage fluid, the two need to be separated. If the force is not enough during insertion, the drainage tube and the negative pressure balloon may be separated, which may cause the drainage fluid to flow out on the one hand, and may also easily cause infection to the patient on the other hand.

[0004] Therefore, the present invention proposes a drainage tube with spiral grooves to solve this problem. Summary of the invention

[0005] The purpose of the present application is to solve the problems in the above-mentioned background technology, and the present application provides a drainage tube with a spiral groove.

[0006] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0007] A drainage tube with a spiral groove, comprising:

[0008] A tube body, on which a connecting tube is installed, the connecting tube is used to connect with the negative pressure balloon, and a spiral groove is opened in the tube body;

[0009] A connecting piece is installed on the connecting pipe, the connecting piece comprises a connecting rod and a clamping plate, the connecting rod is hinged on the connecting pipe, and the clamping plate is hinged to the connecting rod;

[0010] A limiting member is installed on the connecting tube, and the limiting member includes a sliding plate slidably installed on the connecting tube, a limiting rod is installed on the sliding plate, the limiting rod is used to resist the clamping plate, a hook plate is installed on the sliding plate, a protrusion is installed on the connecting tube, the connecting rod is hinged on the protrusion, and the hook end of the hook plate is used to be clamped on the protrusion to limit the sliding of the sliding plate.

[0011] Furthermore, a rotating plate is rotatably mounted on the connecting pipe, a protruding plate is mounted on the rotating plate, a baffle is mounted on the protruding plate, and the baffle is used to shield the connecting rod;

[0012] When the rotating plate rotates, the baffle plate is driven to move through the protruding plate, so that it moves closer to the connecting rod. Figure 3The baffle is in an arc-shaped shape, and the axis of the arc surface of the baffle is colinear with the axis of the connecting pipe. When in use, the baffle makes a circular motion around the axis of the connecting pipe. When in use, the baffle is convenient for shielding the connecting rod as the rotating plate rotates. The arc-shaped structure of the baffle reduces the possibility of conflict between the baffle and the connecting rod body when rotating, so that the baffle can move more smoothly, thereby increasing the practicality of the device.

[0013] Further, the convex block includes a fixed part and a sliding part, the fixed part is connected to the connecting tube, the sliding part and the fixed part are slidably matched, a connecting spring is installed between the sliding part and the connecting tube, the hook plate is used to clamp with the sliding part, a mounting rod is installed on the connecting tube, an inclined block is installed at the end of the mounting rod, an inclined groove for accommodating the inclined block is opened on the sliding part, and a vertical rod connected with the rotating plate is installed on the inclined block;

[0014] When the device needs to be disassembled, the installation rod is driven to drive the inclined block to move, so that the inclined block enters the inclined groove to release the resistance of the inclined block to the sliding part, and the sliding part slides toward the connecting pipe by pulling the connecting spring, so as to release the contact between the sliding part and the hook plate, so that the sliding of the hook plate and the sliding plate is restored, and at the same time, the baffle is pulled by the vertical rod to rotate to release the obstruction of the connecting rod. When the device needs to be disassembled, the operation is more convenient.

[0015] Further, a ring block is rotatably mounted on the connecting pipe, a mounting rod is mounted on the ring block, an outer sleeve is mounted on the ring block, the inner diameter of the outer sleeve is larger than the outer diameter of the baffle, a through groove for the connecting rod to pass through is formed on the outer sleeve, and a sealing plate for sealing the through groove is slidably mounted on the outer sleeve;

[0016] When in use, the outer sleeve is rotated to drive the ring block to rotate, so that the installation rod drives the inclined block to release the interference with the sliding part and drives the baffle to release the blocking of the connecting rod. It is more convenient to use. When the device is installed, the outer sleeve is in the above-mentioned released state, and the through groove is aligned with the connecting rod. At this time, the sliding sealing plate releases the cover on the through groove, so that the connecting rod has enough rotation space, and the ends of the connecting rod are moved away from each other, which is convenient for inserting the interface of the negative pressure balloon between the clamping plates. When the device is fixed, the outer sleeve is rotated to make the inclined block interfere with the sliding part and the block block block the connecting rod, and the through groove and the connecting rod are misaligned, so that the connecting rod is not only blocked by the block, but also restricted by the inner wall of the outer sleeve, which further increases the stability of the connecting rod when in use.

[0017] Furthermore, the sliding plate is provided with a notch, the notch is provided with a guiding inclined surface, an abutment block is installed on the inner wall of the outer sleeve, the abutment block is also provided with a guiding inclined surface, and the guiding inclined surface on the notch is parallel to the guiding inclined surface on the abutment block;

[0018] When in use, when the outer sleeve rotates, it drives the resistance block close to the sliding plate, so that the resistance block contacts the guide bevel on the notch through the guide bevel, and is guided by the guide bevel so that the resistance block contacts the sliding plate, thereby forcing the sliding plate to drive the hook plate to move toward the protrusion, which is more convenient when installing the device.

[0019] Furthermore, an insertion rod is slidably mounted on the sealing plate, and a plug hole for accommodating the free end of the insertion rod is provided on the connecting pipe. When the insertion rod is inserted into the plug hole, the rotation of the ring block is restricted and the sliding of the sealing plate is also restricted;

[0020] When the device is in use, the insertion rod is inserted into the socket and the insertion rod is blocked by the inner wall of the socket. At this time, the sliding of the sealing plate is restricted, and because the sealing plate and the outer sleeve are only in a sliding relationship, the movement of the sealing plate on the connecting pipe is restricted by the insertion rod, so that the sealing plate restricts the outer sleeve and limits its rotation tendency, thereby reducing the possibility of the sealing plate sliding accidentally during use, and reducing the possibility of the outer sleeve rotating accidentally during use, thereby increasing the stability of the device during use.

[0021] Furthermore, the sealing plate is provided with a side block, and the outer sleeve is provided with a side groove for accommodating the side block;

[0022] The side block is slidably inserted into the side groove, thereby increasing the contact area between the outer sleeve and the sealing plate, so that the sealing plate has a more obvious tactile feedback when sliding, and the inner wall of the side groove restricts the side wall of the side block, so that the sealing plate can only slide on the outer sleeve in a straight line direction, which increases the stability of the sealing plate when in use.

[0023] Furthermore, the limiting rod comprises a straight main section and a straight auxiliary section which are parallel to each other, a connecting section is installed between the straight main section and the straight auxiliary section to keep the straight main section away from the protrusion, the straight auxiliary section is used to contact with the clamping plate, the length of the straight auxiliary section is smaller than the length of the straight main section, the clamping plate is made of rubber, and the thickness of the clamping plate is smaller than the distance from the straight auxiliary section to the surface of the connecting pipe;

[0024] Only the straight sub-section contacts the clamping plate. When the device is in use, the sliding plate only needs to slide a small range to complete the contact, which increases the convenience of the device when in use. The clamping plate is made of rubber, and the thickness of the clamping plate is less than the distance from the straight sub-section to the surface of the connecting pipe, so that when the limiting rod contacts the clamping plate, the clamping plate undergoes elastic deformation and contacts the limiting rod in the opposite direction, thereby reducing the gap between it and the limiting rod, further increasing the contact effect on the clamping plate.

[0025] Furthermore, the connecting pipe is provided with a receiving groove for receiving the clamping plate;

[0026] When the device is not needed, or is packaged for delivery, the connecting rod is rotated 180° and the clamping plate is rotated 180°, and the clamping plate is inserted into the receiving slot to facilitate storage and transportation of the device.

[0027] Furthermore, a protruding block is installed on the side wall of the connecting pipe, a return spring is installed between the protruding block and the sliding plate, the protruding block is located on the sliding path of the sliding plate, and the protruding block is used to limit the sliding distance of the sliding plate;

[0028] When the outer sleeve of the present application rotates so that the interference block rotates to align with the notch, the return spring pulls the sliding plate to make it close to the protruding block. Through the cooperation of the protruding block and the return spring, even if the sliding plate is separated from the protruding block, it will not slide to a position too far away from the protruding block, so that during subsequent installation, the interference block can be inserted into the notch and can smoothly interfere with the guiding inclined surface of the notch, thereby increasing the feasibility of the device. Moreover, when the outer sleeve rotates, when the installation rod rotates to contact the protruding block, the through groove and the connecting rod are misaligned, prompting the installer to install in place, providing the installer with more obvious tactile feedback, thereby increasing the practicality of the device.

[0029] The beneficial effects of this application are as follows:

[0030] When the present application is in use, the connection is not only achieved through the friction between the negative pressure balloon and the connecting tube, but also through the interference of the limiting rod with the clamping plate, which further increases the friction between the two, making the device more stable when in use; and when in use, when the sliding plate drives the limiting rod to interfere with the clamping plate, it also drives the hook plate and the protrusion to engage with each other, limiting the sliding of the sliding plate, so that the limiting rod always interferes with the clamping plate, increasing the stability of the device when in use and reducing the possibility of the tube body falling off when in use.

[0031] In the present application, when the rotating plate rotates, the baffle plate is driven to move by the protruding plate, so that it moves close to the connecting rod until Figure 3The baffle is in an arc-shaped shape, and the axis of the arc surface of the baffle is colinear with the axis of the connecting pipe. When in use, the baffle makes a circular motion around the axis of the connecting pipe. When in use, the baffle is convenient for shielding the connecting rod as the rotating plate rotates. The arc-shaped structure of the baffle reduces the possibility of conflict between the baffle and the connecting rod body when rotating, so that the baffle can move more smoothly, thereby increasing the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the three-dimensional structure of this application;

[0033] Figure 2 This is an exploded view of the outer sleeve when the device of the present application is stored;

[0034] Figure 3 This is a schematic diagram of the structure of the connecting pipe of this application;

[0035] Figure 4 It is a schematic diagram of the structure on the transfer board of this application;

[0036] Figure 5 It is a schematic diagram of the bump and the structure thereon of the present application;

[0037] Figure 6 It is a schematic diagram of the sliding plate of the present application and the structure thereon;

[0038] Figure 7 This is an exploded view of the outer sleeve and sealing plate structure of the present application;

[0039] Figure 8 This is an exploded view of the structure on the connecting pipe of this application;

[0040] Fig. 9 It is another schematic diagram of the sliding plate and the structure thereon of the present application;

[0041] Fig.10 This application Figure 6 Enlarged view of point A in the middle;

[0042] 1. The cam is provided with a plurality of locking cams, and a plurality of locking cams are provided with a plurality of locking cams. The plurality of locking cams are provided with a plurality of locking cams, and a plurality of locking cams are provided with a plurality of locking cams. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Embodiment 1

[0044] like Figure 1 - Fig.10 As shown, a drainage tube with a spiral groove proposed in one embodiment of the present application includes:

[0045] A tube body 1 is provided with a connecting tube 2, which is used to connect to a negative pressure balloon. A spiral groove is provided in the tube body 1, and the tube body 1 is used to connect to a patient for drainage. The connecting tube 2 is used to connect the tube body 1 to the negative pressure balloon. The spiral groove is used to increase the internal volume of the tube body 1 so that it can better drain.

[0046] The connecting member 3 is installed on the connecting tube 2. The connecting member 3 includes a connecting rod 301 and a clamping plate 302. The connecting rod 301 is hinged on the connecting tube 2, and the clamping plate 302 is hinged to the connecting rod 301. When in use, the connecting rod 301 is rotated to make it close to the interface of the negative pressure balloon, and the clamping plate 302 is rotated to contact the side wall of the interface to complete the initial fixation;

[0047] The limiting member 4 is installed on the connecting tube 2. The limiting member 4 includes a sliding plate 401 slidably installed on the connecting tube 2. A limiting rod 402 is installed on the sliding plate 401. The limiting rod 402 is used to interfere with the clamping plate 302. When in use, the sliding plate 401 is driven to approach the clamping plate 302, and the limiting rod 402 interferes with the clamping plate 302 to limit its rotation, so that it cannot move away from the negative pressure balloon interface and interfere with the negative pressure balloon interface, thereby clamping the negative pressure balloon interface. Since the clamping plate 302 is located at the free end of the connecting rod 301, when it is squeezed by the limiting rod 402 to interfere with the negative pressure balloon interface, the rotation of the connecting rod 301 is also limited, thereby increasing the stability of the device when in use.

[0048] A hook plate 403 is installed on the sliding plate 401, a protrusion 404 is installed on the connecting pipe 2, the connecting rod 301 is hinged on the protrusion 404, and the hook end of the hook plate 403 is used to be clamped on the protrusion 404 to limit the sliding of the sliding plate 401. The hook plate 403 is made of medical plastic or other elastic materials. When the limiting rod 402 contacts the clamping plate 302, the sliding plate 401 approaches the protrusion 404 and is clamped with the protrusion 404 through the hook plate 403. Figure 3 As shown, the sliding of the sliding plate 401 and the limiting rod 402 on the connecting pipe 2 is restricted, reducing the possibility of the limiting rod 402 releasing the resistance to the clamping plate 302 due to the influence of external force, thereby increasing the stability of the device when in use;

[0049] Compared with the prior art, when in use, the connection is not only achieved through the friction between the negative pressure balloon and the connecting tube 2, but also through the resistance of the limiting rod 402 to the clamping plate 302, which further increases the friction between the two, making the device more stable when in use. When in use, when the sliding plate 401 drives the limiting rod 402 to resist the clamping plate 302, it also drives the hook plate 403 and the protrusion 404 to engage with each other, limiting the sliding of the sliding plate 401, so that the limiting rod 402 always resists the clamping plate 302, thereby increasing the stability of the device when in use and reducing the possibility of the tube body 1 falling off when in use. Embodiment 2

[0050] like Figure 4 and Figure 8 As shown, the second embodiment is based on the first embodiment to further disclose the connecting member 3, the limiting member 4 and the connecting pipe 2. In the second embodiment, a rotating plate 5 is rotatably installed on the connecting pipe 2, a protruding plate 6 is installed on the rotating plate 5, and a baffle 7 is installed on the protruding plate 6. The baffle 7 is used to block the connecting rod 301. When the rotating plate 5 rotates, the baffle 7 is driven by the protruding plate 6 to move so that it moves close to the connecting rod 301 to Figure 3The position in the middle, thereby limiting the tendency of the connecting rod 301 to move away from the connecting pipe 2, increases the stability of the connecting rod 301 when in use, and works together with the limiting rod 402 to limit the rotation of the connecting rod 301, further increasing the stability of the connecting rod 301 when in use. The baffle 7 is arc-shaped, and the axis of the arc surface of the baffle 7 is colinear with the axis of the connecting pipe 2. When in use, the baffle 7 makes a circular motion around the axis of the connecting pipe 2. When in use, it is convenient for the baffle 7 to block the connecting rod 301 as the rotating plate 5 rotates. The baffle 7 reduces the possibility of conflicting with the rod body of the connecting rod 301 when rotating through the arc-shaped structure, which makes it convenient for the baffle 7 to move more smoothly, thereby increasing the practicality of the device.

[0051] like Figure 5 and Fig. 9 As shown, in the second embodiment, the protrusion 404 includes a fixed portion 4041 and a sliding portion 4042, the fixed portion 4041 is connected to the connecting tube 2, the sliding portion 4042 and the fixed portion 4041 are slidably matched, a connecting spring 9 is installed between the sliding portion 4042 and the connecting tube 2, and the hook plate 403 is used to engage with the sliding portion 4042, so that the sliding portion 4042 and the connecting tube 2 are also slidably connected, and the sliding path of the sliding portion 4042 is to slide along the radial direction of the connecting tube 2. When the sliding portion 4042 is close to the connecting tube 2, the sliding portion 4042 is separated from the hook plate 403, so that the drainage tube and the negative pressure balloon can be disassembled more conveniently, and the connecting spring 9 forces the sliding portion 4042 to be close to the connecting tube 2;

[0052] The connecting tube 2 is provided with a mounting rod 10, an inclined block 11 is provided at the end of the mounting rod 10, an inclined groove 12 for accommodating the inclined block 11 is provided on the sliding portion 4042, and a vertical rod 13 connected to the baffle 7 is provided on the inclined block 11. When in use, the mounting rod 10, the inclined block 11 and the vertical rod 13 are fixedly connected. When the mounting rod 10 moves in an arc around the axis of the connecting tube 2, the other two components can be driven to move together.

[0053] When the device needs to be disassembled, the installation rod 10 is driven to drive the inclined block 11 to move, so that the inclined block 11 enters the inclined groove 12 to release the interference of the inclined block 11 with the sliding part 4042, and the sliding part 4042 slides toward the connecting pipe 2 by pulling the connecting spring 9, so as to release the contact between the sliding part 4042 and the hook plate 403, so that the sliding of the hook plate 403 and the sliding plate 401 is restored, and at the same time, the rotating plate 5 is pulled by the vertical rod 13 to rotate to release the obstruction of the connecting rod 301. When the device needs to be disassembled, the operation is more convenient.

[0054] like Figure 7 and Figure 8As shown, in the second embodiment, a ring block 14 is rotatably mounted on the connecting tube 2, the mounting rod 10 is mounted on the ring block 14, an outer sleeve 15 is mounted on the ring block 14, the inner diameter of the outer sleeve 15 is larger than the outer diameter of the baffle 7, a through groove 16 for the connecting rod 301 to pass through is provided on the outer sleeve 15, a sealing plate 17 for sealing the through groove 16 is slidably mounted on the outer sleeve 15, when in use, the components on the connecting tube 2 are shielded by the outer sleeve 15 and the sealing plate 17, firstly, the structure can be protected, and secondly, the exterior of the device can be made smoother, reducing the possibility of discomfort to the patient caused by more edges and corners on the exterior of the device during use, the axis of the ring block 14 is colinear with the axis of the connecting tube 2, and the mounting rod 10 is made to make an arc motion around the axis of the connecting tube 2 by rotating the ring block 14;

[0055] When in use, the outer sleeve 15 is rotated to drive the ring block 14 to rotate, so that the installation rod 10 drives the inclined block 11 to release the interference with the sliding part 4042 and drive the baffle 7 to release the blocking of the connecting rod 301, which is more convenient to use. When the device is installed, the outer sleeve 15 is in the above-mentioned released state, and the through groove 16 is aligned with the connecting rod 301. At this time, the sliding sealing plate 17 releases the cover of the through groove 16, so that the connecting rod 301 has enough rotation space, and the ends of the connecting rod 301 are separated from each other, which is convenient for inserting the interface of the negative pressure balloon between the clamping plates 302. When the device is fixed, the outer sleeve 15 is rotated to make the inclined block 11 interfere with the sliding part 4042 and the baffle 7 block the connecting rod 301, and the through groove 16 is misaligned with the connecting rod 301, so that the connecting rod 301 is not only blocked by the baffle 7, but also restricted by the inner wall of the outer sleeve 15, which further increases the stability of the connecting rod 301 when in use.

[0056] like Figure 6 As shown, in the second embodiment, the sliding plate 401 is provided with a notch 23, and a guiding slope is provided on the notch 23. A resistance block 22 is installed on the inner wall of the outer sleeve 15, and a guiding slope is also provided on the resistance block 22. The guiding slope on the notch 23 is parallel to the guiding slope on the resistance block 22. When in use, when the outer sleeve 15 rotates, the resistance block 22 is driven to approach the sliding plate 401, so that the resistance block 22 is guided by the guiding slope and the guiding slope on the notch 23, so that the resistance block 22 resists the sliding plate 401, and then forces the sliding plate 401 to drive the hook plate 403 to move toward the protrusion 404, which is more convenient when installing the device.

[0057] like Figure 8As shown, in embodiment 2, an insertion rod 18 is slidably installed on the sealing plate 17, and a socket 19 for accommodating the free end of the insertion rod 18 is opened on the connecting pipe 2. When the insertion rod 18 is inserted into the socket 19, the rotation of the ring block 14 is restricted and the sliding of the sealing plate 17 is also restricted. When the device is in use, the insertion rod 18 is inserted into the socket 19, and the insertion rod 18 is shielded by the inner wall of the socket 19. At this time, the sliding of the sealing plate 17 is restricted, and because the sealing plate 17 and the outer sleeve 15 are only in a sliding relationship, the insertion rod 18 not only restricts the sliding of the sealing plate 17 on the connecting pipe 2, but also restricts its rotation, so that the sealing plate 17 restricts the outer sleeve 15 and restricts its rotation tendency, thereby reducing the possibility of the sealing plate 17 sliding accidentally during use, and also reducing the possibility of the outer sleeve 15 rotating accidentally during use, thereby increasing the stability of the device during use. Embodiment 3

[0058] like Figure 1 - Fig.10 As shown, the third embodiment is a further disclosure of the application based on the second embodiment. In the third embodiment, a side block 20 is installed on the sealing plate 17, and a side groove 21 for accommodating the side block 20 is opened on the outer sleeve 15. The side block 20 is slidably inserted in the side groove 21, thereby increasing the contact area between the outer sleeve 15 and the sealing plate 17, and increasing the friction between the two, so that the sealing plate 17 has a more obvious tactile feedback when sliding, and the inner wall of the side groove 21 restricts the side wall of the side block 20, so that the sealing plate 17 can only slide on the outer sleeve 15 in a straight direction, which increases the stability of the sealing plate 17 when in use.

[0059] In the third embodiment, the limiting rod 402 includes a straight main section 4021 and a straight sub-section 4023 which are parallel to each other. A connecting section 4022 is installed between the straight main section 4021 and the straight sub-section 4023 to keep the straight main section 4021 away from the protrusion 404. The straight sub-section 4023 is used to contact the clamping plate 302. The length of the straight sub-section 4023 is less than that of the straight main section 4021, so that the limiting rod 402 has a shape as shown in FIG. Figure 6 The structure shown allows it to interfere with the clamping plate 302 only through the straight sub-section 4023. When the device is in use, it only needs to slide the sliding plate 401 a small amount to complete the interference, which increases the convenience of the device when in use. The clamping plate 302 is made of medical rubber, and the thickness of the clamping plate 302 is less than the distance from the straight sub-section 4023 to the surface of the connecting tube 2, so that when the limiting rod 402 interferes with the clamping plate 302, the clamping plate 302 undergoes elastic deformation and interferes with the limiting rod 402 in the reverse direction, so that the gap between it and the limiting rod 402 is reduced, further increasing the interference effect on the clamping plate 302.

[0060] In the third embodiment, a receiving groove 8 for receiving the clamping plate 302 is provided on the connecting tube 2, and the notch 23 on the sliding plate 401 is used to receive the rod body of the connecting rod 301. When the device is not needed or is packaged for delivery, the connecting rod 301 is rotated 180° and the clamping plate 302 is rotated 180°, and the clamping plate 302 is inserted into the receiving groove 8, so that the device can be stored and transported easily.

[0061] A channel is also provided on the connecting tube 2, which is used to accommodate the end of the insertion rod 18. When in use, when the outer sleeve 15 is rotated until the through groove 16 is aligned with the connecting rod 301, after the connecting rod 301 is stored in the outer wall, the insertion rod 18 is inserted into the channel to complete the restriction of the outer sleeve 15 and the sealing plate 17, thereby increasing the stability of the device when stored.

[0062] In the third embodiment, a protrusion 24 is installed on the side wall of the connecting pipe 2, and a return spring 25 is installed between the protrusion 24 and the sliding plate 401, and the return spring 25 forces the sliding plate 401 to move away from the protrusion 404;

[0063] The raised block 24 is located on the sliding path of the sliding plate 401, and the raised block 24 is used to limit the sliding distance of the sliding plate 401. When the outer sleeve 15 rotates to make the abutment block 22 rotate to align with the notch 23, the return spring 25 pulls the sliding plate 401 to make it close to the raised block 24. Through the cooperation of the raised block 24 and the return spring 25, even if the sliding plate 401 is separated from the raised block 404, it will not slide to a position too far away from the raised block 404, so that during subsequent installation, the abutment block 22 can be inserted into the notch 23, and then can smoothly abut against the guiding inclined surface of the notch 23, thereby increasing the feasibility of the device. Moreover, when the outer sleeve 15 rotates, when the installation rod 10 rotates to contact with the raised block 24, the through groove 16 and the connecting rod 301 are misaligned, prompting the installer to install in place, providing the installer with a more obvious tactile feedback, thereby increasing the practicality of the device. Embodiment 4

[0064] Embodiment 4 further discloses the application based on daily use. First, the drainage tube with spiral grooves is used in surgery, so PE material (or TPU, liquid silicone, etc.) can be used. When used, one end of the catheter is inserted into the drainage site in the body or on the wound surface, and the other end can be connected to other external devices such as drainage tubes outside the body. Through the pressure of the body, gravity or negative pressure suction, the drainage is drained to the outside of the body. Therefore, it can be regarded as consisting of three parts: the puncture part, the drainage part (non-spiral part) and the spiral drainage part.

[0065] In addition to the above embodiments, the spiral drainage portion in the present embodiment can be formed by three PE strips twisted together in a spiral shape (triple helical structure, like three ropes twisted together), and the surface of the formed spiral drainage portion has a spiral arch flow groove (when the spiral drainage portion is formed by three PE strips (or other biocompatible materials) tightly wound in a spiral shape, the naturally formed structure on its surface will present a unique spiral arch flow groove; that is, the rotating intersection part).

[0066] The drainage area can be increased: The design of the spiral bow flow groove greatly increases the contact area between the drainage tube and the surrounding tissue, thereby improving the drainage efficiency. The fluid can be more evenly distributed in the drainage tube when passing through the bow flow groove, reducing the risk of blockage.

[0067] It can also promote fluid flow: the spiral shape of the bow flow channel helps guide the fluid to flow along a specific path, forming a vortex effect, which can further promote the mixing and movement of the fluid and ensure a smooth drainage process.

[0068] It can also reduce pressure accumulation: inside the drainage tube, especially in the case of blockage or increased pressure that may be encountered during drainage, the spiral arch flow groove can provide a buffer mechanism to reduce the accumulation of pressure in local areas and reduce the risk of deformation or rupture of the drainage tube due to excessive pressure;

[0069] On this basis, microsphere technology can be further added to the spiral drainage, that is, microspheres can be embedded on the surface or inside of the spiral arch flow channel to achieve the sustained release of drugs; a coating (such as an anticoagulant coating, hemostatic coating or analgesic coating) can also be added to the surface of the spiral drainage part to play an anticoagulant, hemostatic and analgesic role.

[0070] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A drainage tube with a spiral groove, characterized in that: include: A tube body (1) is mounted with a connecting tube (2), the connecting tube (2) being used to be connected to the negative pressure balloon, and a spiral groove is provided in the tube body (1); A connecting member (3) is mounted on the connecting pipe (2), the connecting member (3) comprising a connecting rod (301) and a clamping plate (302), the connecting rod (301) being hinged on the connecting pipe (2), and the clamping plate (302) being hinged on the connecting rod (301); A limiting member (4) is mounted on the connecting tube (2), the limiting member (4) comprising a sliding plate (401) slidably mounted on the connecting tube (2), a limiting rod (402) being mounted on the sliding plate (401), the limiting rod (402) being used to resist the clamping plate (302), a hook plate (403) being mounted on the sliding plate (401), a convex block (404) being mounted on the connecting tube (2), the connecting rod (301) being hinged on the convex block (404), and the hook plate (403) being The hook end is used to be clamped on the protrusion (404) so ​​that the sliding of the sliding plate (401) is restricted. When in use, the connecting rod (301) is rotated to make it close to the interface of the negative pressure balloon, and the clamping plate (302) is rotated to contact the side wall of the interface to complete the initial fixation. When in use, the limiting rod (402) limits the rotation of the clamping plate (302), so that the clamping plate (302) cannot be away from the interface of the negative pressure balloon and contacts the interface of the negative pressure balloon, thereby clamping the interface of the negative pressure balloon.

2. A drainage tube with a spiral groove according to claim 1, characterized in that: A rotating plate (5) is rotatably mounted on the connecting pipe (2), a protruding plate (6) is mounted on the rotating plate (5), a baffle (7) is mounted on the protruding plate (6), and the baffle (7) is used to shield the connecting rod (301).

3. A drainage tube with a spiral groove according to claim 2, characterized in that: The protrusion (404) comprises a fixed portion (4041) and a sliding portion (4042); the fixed portion (4041) is connected to the connecting tube (2); the sliding portion (4042) and the fixed portion (4041) are slidably matched; a connecting spring (9) is installed between the sliding portion (4042) and the connecting tube (2); the hook plate (403) is used for clamping with the sliding portion (4042); a mounting rod (10) is installed on the connecting tube (2); an inclined block (11) is installed at the end of the mounting rod (10); an inclined groove (12) for accommodating the inclined block (11) is provided on the sliding portion (4042); and a vertical rod (13) connected to the rotating plate (5) is installed on the inclined block (11).

4. A drainage tube with a spiral groove according to claim 3, characterized in that: A ring block (14) is rotatably mounted on the connecting pipe (2), the mounting rod (10) is mounted on the ring block (14), an outer sleeve (15) is mounted on the ring block (14), the inner diameter of the outer sleeve (15) is larger than the outer diameter of the baffle (7), a through groove (16) for the connecting rod (301) to pass through is formed on the outer sleeve (15), and a sealing plate (17) for sealing the through groove (16) is slidably mounted on the outer sleeve (15).

5. A drainage tube with spiral grooves according to claim 4, characterized in that: The sliding plate (401) is provided with a notch (23), and a guiding inclined surface is provided on the notch (23). A resistance block (22) is mounted on the inner wall of the outer sleeve (15), and a guiding inclined surface is also provided on the resistance block (22). The guiding inclined surface on the notch (23) is parallel to the guiding inclined surface on the resistance block (22).

6. A drainage tube with spiral grooves according to claim 5, characterized in that: An insertion rod (18) is slidably mounted on the sealing plate (17), and a socket (19) for accommodating the free end of the insertion rod (18) is provided on the connecting pipe (2). When the insertion rod (18) is inserted into the socket (19), the rotation of the ring block (14) is restricted and the sliding of the sealing plate (17) is also restricted.

7. A drainage tube with spiral grooves according to claim 6, characterized in that: A side block (20) is mounted on the sealing plate (17), and a side groove (21) for accommodating the side block (20) is formed on the outer sleeve (15).

8. The drainage tube with spiral grooves according to claim 7, characterized in that: The limiting rod (402) comprises a straight main section (4021) and a straight auxiliary section (4023) which are parallel to each other. A connecting section (4022) is installed between the straight main section (4021) and the straight auxiliary section (4023) so as to keep the straight main section (4021) away from the protrusion (404). The straight auxiliary section (4023) is used to contact the clamping plate (302). The length of the straight auxiliary section (4023) is smaller than the length of the straight main section (4021). The clamping plate (302) is made of rubber. The thickness of the clamping plate (302) is smaller than the distance from the straight auxiliary section (4023) to the surface of the connecting pipe (2).

9. A drainage tube with a spiral groove according to claim 8, characterized in that: The connecting pipe (2) is provided with a receiving groove (8) for receiving the clamping plate (302).

10. The drainage tube with spiral grooves according to claim 9, characterized in that: A protruding block (24) is installed on the side wall of the connecting pipe (2), a return spring (25) is installed between the protruding block (24) and the sliding plate (401), the protruding block (24) is located on the sliding path of the sliding plate (401), and the protruding block (24) is used to limit the sliding distance of the sliding plate (401).

Images