Drainage tube implantation assembly

Abstract

The utility model relates to a drainage tube implantation assembly, and relates to the technical field of medical instruments. The drainage tube implantation assembly comprises a flow guide tube and a subcutaneous traction needle, the flow guide tube comprises a tube body, one end of the tube body is a drainage end, and the other end of the tube body is a non-drainage end; a plurality of drainage holes are formed in the drainage end of the tube body; one end of the subcutaneous traction needle is a needle point puncture end, and the other end is a connecting end; the connecting end of the subcutaneous traction needle and the drainage end of the tube body are provided with a connecting structure used for detachably connecting the connecting end and the drainage end. The subcutaneous traction needle is directly connected with the drainage end of the flow guide tube, so that the steps of implanting and taking out the guide tube are omitted, complexity and operation difficulty in implanting the drainage tube are reduced, an operation is simpler, operation time is shorter, and pain of a patient is relieved; and meanwhile, the subcutaneous traction needle can be made thinner, so that trauma and bleeding can be reduced as much as possible when the scalp is punctured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a drainage tube implantation assembly. BACKGROUND

[0002] Drainage surgery using a drainage tube is a common treatment method in modern medicine. It can reduce local symptoms and speed up recovery by placing a drainage tube in various interstitial surgeries to drain the pus and tissue exudate in the interstitial space. For example, external brain drainage has become one of the most important and most common surgeries in neurosurgery, and is suitable for treating diseases such as brain trauma, cerebral hemorrhage, intracranial infection, and hydrocephalus.

[0003] Clinical studies have shown that the risk of infection increases with the length of drainage. The subcutaneous tunneling technique of the drainage tube is a means for reducing the risk of postoperative infection in the medical field. This technique reduces the risk of infection by fixing the drainage tube away from the wound. In particular, in brain drainage surgery, the subcutaneous tunneling technique of the drainage tube can effectively reduce the risk of blockage and intracranial infection of the drainage tube.

[0004] Currently, there are two types of drainage tubes used in drainage surgery: single-lumen drainage tubes and multi-lumen drainage tubes. Referring to FIGS. 1 and 2, the drainage end 11 of the single-lumen drainage tube 100 is a blind end, the non-drainage end 12 is an open end, and there is no branch. During the subcutaneous tunneling process of the single-lumen drainage tube 100, the opening of the non-drainage end 12 of the single-lumen drainage tube 100 is connected to the tail of the subcutaneous traction needle 200. After successfully placing the drainage end 11 of the single-lumen drainage tube 100 through the skull hole 301 of the patient's skull 300, the other end (non-drainage end 12) is operated away from the wound through the subcutaneous tunneling operation, and the single-lumen drainage tube 100 is pulled out and fixed through the subcutaneous tunnel exit 302. Referring to FIGS. 3 and 4, the drainage end 11 of the multi-lumen drainage tube 400 is also a blind end, but the non-drainage end 12 of the multi-lumen drainage tube has branches, and cannot be connected to the subcutaneous traction needle 200 through the non-drainage end 12 to pass through the subcutaneous tunnel. During the subcutaneous tunneling process of the multi-lumen drainage tube 400, the drainage end 11 of the multi-lumen drainage tube 400 needs to be first inserted through the subcutaneous tunnel exit 302, and then the subcutaneous tunneling operation is performed to reach the skull hole 301 of the patient's skull 300. The multi-lumen drainage tube 400 is bent to place its drainage end 11 into the target area through the skull hole 301 to achieve the same effect. Figure 1 Figure 2 Figure 3 Figure 4

[0005] ​​​​And because the drainage end 11 of the multi-lumen drainage tube 400 is a blind end, the subcutaneous traction needle 200 is difficult to directly connect the drainage end 11 of the multi-lumen drainage tube 400. At present, the method is to set the guide tube 500, first connect the guide tube 500 through the subcutaneous traction needle, set the guide tube 500 in the subcutaneous channel, then the multi-lumen drainage tube 400 passes through the guide tube 500, and after the passing is completed, the guide tube 500 is removed, which increases the complexity of the drainage tube implantation. There is a great operation difficulty in the implantation of the multi-lumen drainage tube 400.

[0006] In addition, for the subcutaneous running of the large-diameter multi-lumen drainage tube 400, the diameter of the guide tube 500 used must be greater than that of the multi-lumen drainage tube 400 to facilitate the running of the multi-lumen drainage tube 400. Therefore, the subcutaneous traction needle 200 matched with the guide tube 500 is also relatively thick, and the hard subcutaneous traction needle 200 will cause more trauma and bleeding when passing through the scalp. Moreover, for doctors, the large subcutaneous traction needle 200 is heavy and not very convenient to use. Practical new type content

[0007] In order to reduce the operation difficulty of subcutaneous running in drainage and reduce the damage to the patient, the application provides a drainage tube implantation assembly.

[0008] The drainage tube implantation assembly provided by the application adopts the following technical scheme:

[0009] A drainage tube implantation assembly, comprising a guide tube and a subcutaneous traction needle, the guide tube comprising a tube body, one end of the tube body being a drainage end and the other end being a non-drainage end; a plurality of drainage holes are formed on the drainage end of the tube body;

[0010] One end of the subcutaneous traction needle is a needle tip puncture end, and the other end is a connecting end;

[0011] The connecting end of the subcutaneous traction needle and the drainage end of the tube body have a connecting structure for detachable connection therebetween.

[0012] Through the above technical scheme, the connecting end of the subcutaneous traction needle can be directly connected with the drainage end of the tube body through the connecting structure, the drainage end of the guide tube enters through the subcutaneous tunnel outlet of the patient's skull, and under the traction of the subcutaneous traction needle, the subcutaneous running operation reaches the skull hole of the patient's skull, and then the subcutaneous traction needle is removed, and then the guide tube is bent to place the drainage end thereof into the target area through the skull hole.

[0013] The subcutaneous traction needle is directly connected with the drainage end of the drainage tube, and the size of the subcutaneous traction needle can match the size of the drainage tube. The subcutaneous traction needle can be thin, so that the trauma and bleeding can be reduced as much as possible when the scalp is punctured. The small and light subcutaneous traction needle is convenient for doctors to use. Meanwhile, the drainage tube implanting assembly is used in the drainage operation, so that the implanting and removing steps of the guide tube are omitted, the complexity and operation difficulty of the implanting of the drainage tube are reduced, the operation is simpler, the operation time is shorter, and the pain of the patient is reduced.

[0014] Optionally, the connecting structure comprises a clamping groove formed on the drainage end of the tube body and a plug rod arranged on the connecting end of the subcutaneous traction needle; the clamping groove extends from the drainage end face of the tube body to the non-drainage end of the tube body along the length direction of the tube body, and the plug rod can be embedded in the clamping groove and tightly fit the plug rod with the tube body.

[0015] By adopting the above technical scheme, the plug rod on the subcutaneous traction needle can be inserted into the clamping groove of the tube body, and the two are tightly fitted to achieve detachable connection, which is simple to disassemble and assemble and convenient to use. Further, the slot of the clamping groove can also be provided with a tapered structure to improve the stability of the connection. The clamping groove can also be provided with a protrusion, an annular protrusion or other structures for clamping to ensure the stable and reliable detachable connection of the plug rod and the tube body.

[0016] Optionally, the end of the plug rod away from the needle tip puncture end has a pagoda male plug, and the end face of the pagoda male plug has an arc-shaped guide curve.

[0017] By adopting the above technical scheme, the arc-shaped guide curve can play a guiding role, so as to facilitate the plug rod to be quickly and accurately inserted into the clamping groove of the tube body. By setting the outer end of the plug rod as a pagoda male plug, a barb limiting structure can be formed to realize the stable and reliable connection of the plug rod and the tube body, and the phenomenon of the subcutaneous traction needle falling off during traction of the drainage tube can be avoided.

[0018] Optionally, the drainage tube implanting assembly further comprises a plugging plug, the material of the plugging plug is the same as that of the tube body, and the plugging plug can be embedded in the clamping groove to make the outer contour of the drainage end of the tube body smooth.

[0019] By adopting the above technical scheme, when the implanting is completed, the subcutaneous traction needle is removed, the plugging plug is inserted into the clamping groove of the tube body, and the clamping groove is plugged to make the outer contour of the drainage end of the tube body smooth, so as to facilitate subsequent operation and reduce the influence of drainage interference. As an alternative, after the subcutaneous implanting is completed, the tube body can be filled with glue in the clamping groove, and the drainage end is implanted into the target area through the skull hole after the glue is solidified.

[0020] Optionally, the drainage tube implanting assembly further comprises a cap sleeve, one end of the cap sleeve is an open end, the other end is a closed end, the drainage end of the tube body can be inserted into the cap sleeve through the open end of the cap sleeve, and the end face shape of the closed end of the cap sleeve matches the end face shape of the drainage end of the tube body.

[0021] By adopting the above technical scheme, after subcutaneous hidden operation, the subcutaneous traction needle is removed, the cap sleeve is covered on the drainage end cover of the tube body, the drainage end of the multi-cavity drainage tube is implanted into the target area through the skull hole, the human tissue is prevented from being embedded into the clamping groove, and the interference of the clamping groove on the puncture process is avoided.

[0022] Optionally, the connecting structure comprises a sleeve provided at the connecting end of the subcutaneous traction needle, the outer diameter of the sleeve is larger than the outer diameter of the body of the subcutaneous traction needle, and one end of the sleeve away from the needle tip puncture end has an opening and the drainage end of the tube body can be inserted into the sleeve through the opening end of the sleeve.

[0023] By adopting the above technical scheme, the sleeve of the subcutaneous traction needle can be sleeved on the drainage end of the tube body, and the two are tightly matched, so as to realize the detachable connection of the subcutaneous traction needle and the drainage tube, which is simple to disassemble and assemble and convenient to use. At the same time, only the sleeve of the subcutaneous traction needle has a larger size, the overall size and weight of the subcutaneous traction needle are relatively small, and the doctor is convenient to operate.

[0024] Optionally, a row of limiting protrusions arranged in the axial direction of the sleeve is arranged on the inner wall of the sleeve, the spacing of the limiting protrusions is equal to the spacing of the drainage holes on the drainage end of the tube body, the number of the limiting protrusions is at least two, and the limiting protrusions can be embedded into the corresponding drainage holes.

[0025] By adopting the above technical scheme, the limiting protrusions and a small number of drainage holes on the tube body are used to realize limiting matching, so as to improve the stability and reliability of the connection between the subcutaneous traction needle and the tube body.

[0026] Optionally, one side of the sleeve has a notch extending in the length direction of the sleeve from the opening of the sleeve; and the limiting protrusions are located on the inner wall of the other side of the sleeve and opposite to the notch.

[0027] By adopting the above technical scheme, part of the side wall of the sleeve is missing, the limiting protrusions are arranged on the remaining part of the side wall, the remaining part of the side wall can be deformed to one side under the action of external force, so as to facilitate the disassembly of the subcutaneous traction needle and the drainage tube.

[0028] Optionally, the notch accounts for 1 / 3 to 2 / 3 of the entire radial cross section of the sleeve in the cross section of the sleeve.

[0029] Further preferably, the ratio is 1 / 2. By adopting the technical scheme, the connection strength of the sleeve can be ensured, and the subcutaneous traction needle and the drainage tube can be conveniently disassembled.

[0030] Optionally, the connecting structure comprises a threaded sleeve arranged at the connecting end of the subcutaneous traction needle, an inner thread is arranged on an inner wall of the threaded sleeve, and the drainage end of the tube body is provided with an outer thread matched with the inner thread.

[0031] By adopting the technical scheme, the connecting end of the subcutaneous traction needle and the drainage end of the tube body are connected through threads, which is stable and reliable and is not easy to fall off.

[0032] In summary, the present application has at least one of the following beneficial technical effects:

[0033] 1. In the present application, the subcutaneous traction needle can be directly connected to the drainage end of the drainage tube, the size of the subcutaneous traction needle can match the size of the drainage tube, and the subcutaneous traction needle can be relatively thin, so that the trauma and bleeding can be reduced as much as possible when the scalp is punctured.

[0034] 2. In the present application, the subcutaneous traction needle of the drainage tube implanting assembly can be made smaller and lighter, which is convenient for doctors to operate.

[0035] 3. In the present application, the drainage tube implanting assembly eliminates the guide tube, reduces the implanting and removing steps of the guide tube, reduces the complexity and operation difficulty of the drainage tube implanting, makes the operation simpler, shortens the operation time, and reduces the pain of the patient. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is a schematic view of an existing single-lumen drainage tube implanting assembly in the background art.

[0037] Figure 2 is a schematic view of a drainage tube implanting method of an existing single-lumen drainage tube in the background art.

[0038] Figure 3 is a schematic view of an existing multi-lumen drainage tube implanting assembly in the background art.

[0039] Figure 4 is a schematic view of a drainage tube implanting method of an existing multi-lumen drainage tube in the background art.

[0040] Figure 5 is a schematic view of a structure of a drainage tube implanting assembly in the present application in embodiment 1.

[0041] Figure 6 is a schematic view of a partial structure of a drainage tube implanting assembly in the present application in embodiment 3.

[0042] Figure 7is a first structural schematic diagram of the drainage tube implantation assembly in the present application in Example 4.

[0043] Figure 8 is a second structural schematic diagram of the drainage tube implantation assembly in the present application in Example 4.

[0044] In the figure:

[0045] 100, single-lumen drainage tube; 200, subcutaneous traction needle; 300, skull; 301, skull hole; 302, subcutaneous tunnel outlet; 400, multi-lumen drainage tube; 500, guide tube;

[0046] 10, guide tube; 11, drainage end; 12, non-drainage end; 13, tube body; 131, drainage hole; 132, clamping groove;

[0047] 21, needle tip puncture end; 22, connecting end; 23, plug-in rod; 231, pagoda male plug; 232, arc-shaped guide surface; 24, sleeve; 241, limiting protrusion; 242, notch;

[0048] 30, cap sleeve. DETAILED DESCRIPTION

[0049] The following will be described in detail in combination with the accompanying Figure 5 - the accompanying drawings Figure 8 , the present application will be further described in detail.

[0050] The drainage tube implantation assembly in the present application is applied to the field of external drainage, and particularly solves the problem of catheterization of multi-lumen drainage tubes. The multi-lumen drainage tube has a larger diameter than the single-lumen drainage tube, and is not easy to subcutaneously run. Therefore, the drainage tube assembly is designed to avoid the large scalp injury caused by using a relatively thick subcutaneous traction needle to pull the guide tube. Of course, the drainage tube implantation assembly in the present application is not limited to the catheterization of multi-lumen drainage tubes, and can also be applied to the catheterization of single-lumen drainage tubes.

[0051] Example 1

[0052] Referring to Figure 5 , the drainage tube implantation assembly in the present application includes a guide tube 10 and a subcutaneous traction needle 200. The guide tube 10 includes a tube body 13, one end of the tube body 13 is a drainage end 11 provided with a plurality of drainage holes 131, and the other end is a non-drainage end 12. One end of the subcutaneous traction needle 200 is a needle tip puncture end 21, and the other end is a connecting end 22. The connecting end 22 of the subcutaneous traction needle 200 and the drainage end 11 of the tube body 13 have a connecting structure for detachably connecting the two.

[0053] Specifically, referring to Figure 5As shown, the connecting structure in the present application includes a clamping groove 132 provided on the drainage end 11 of the tube body 13 and a plug rod 23 provided on the connecting end 22 of the subcutaneous traction needle 200; the clamping groove 132 extends from the end face of the drainage end 11 of the tube body 13 along the length direction of the tube body 13 to the non-drainage end 12 of the tube body 13, and the plug rod 23 can be embedded in the clamping groove 132 and make the plug rod 23 tightly fit with the tube body 13; preferably, the outer diameter of the plug rod 23 is smaller than the outer diameter of the body of the subcutaneous traction needle 200, and the plug rod 23 has a pagoda male plug 231 at the end away from the needle tip puncture end 21, and the end face of the pagoda male plug 231 has an arc-shaped guide curve 232, which can play a guiding role, thereby facilitating the plug rod 23 to be quickly and accurately inserted into the clamping groove 132 of the tube body 13; the pagoda male plug 231 can form a barb limiting structure to realize the stable and reliable connection of the plug rod 23 with the tube body 13, and avoid the phenomenon of falling off of the subcutaneous traction needle 200 in the process of traction of the drainage tube 10.

[0054] Further, the slot opening of the clamping groove 132 in the present application can also be provided with a tapered structure, or the slot wall of the clamping groove 132 can be provided with a protrusion, an annular protrusion or other structures for clamping, thereby further ensuring the stable reliability of the detachable connection of the plug rod 23 with the tube body 13.

[0055] The drainage tube implanting assembly in the present application further includes a blocking plug, the material of the blocking plug is the same as that of the tube body 13, and the blocking plug can be embedded in the clamping groove 132 and make the outer contour of the drainage end 11 of the tube body 13 be smooth. After the implanting of the tube is completed, the subcutaneous traction needle 200 is removed, and the blocking plug is inserted into the clamping groove 132 of the tube body 13 for blocking the clamping groove 132, so that the outer contour of the drainage end 11 of the tube body 13 is smooth, thereby facilitating the subsequent operation and reducing the influence of drainage interference.

[0056] The implementation principle is as follows: the connecting end 22 of the subcutaneous traction needle 200 can be directly connected with the drainage end 11 of the tube body 13 through the connecting structure, the drainage end 11 of the drainage tube 10 enters through the subcutaneous tunnel outlet of the patient's skull, is operated subcutaneously under the traction of the subcutaneous traction needle 200 to reach the skull hole of the patient's skull, the subcutaneous traction needle 200 is then removed, the blocking plug is inserted into the clamping groove 132 of the tube body 13, and then the drainage tube 10 is bent to place its drainage end 11 into the target area through the skull hole.

[0057] The subcutaneous traction needle 200 is directly connected to the drainage end 11 of the drainage tube 10 in the present application. The size of the subcutaneous traction needle 200 can match the size of the drainage tube 10. The subcutaneous traction needle 200 can be thin, so that the trauma and bleeding can be reduced as much as possible when the scalp is punctured. The small and light subcutaneous traction needle 200 is more convenient for doctors to use. Meanwhile, the drainage tube implanting assembly in the present application is used in the drainage operation, so that the steps of implanting and removing the guide tube are omitted, the complexity and operation difficulty of implanting the drainage tube are reduced, the operation is simpler, the operation time is shorter, and the pain of the patient is reduced.

[0058] Embodiment 2

[0059] The present embodiment is substantially the same as embodiment 1. The difference is that, in the present embodiment, instead of using the blocking plug, after the subcutaneous navigation and the removal of the subcutaneous traction needle 200 are completed, the glue is filled into the clamping groove 132 of the tube body 13, and after the glue is solidified, the drainage end 11 is implanted into the target area through the skull hole, so that the outer contour of the drainage end 11 of the tube body 13 is smooth.

[0060] Embodiment 3

[0061] Referring to Figure 6 The present embodiment is substantially the same as embodiment 1. The difference is that, in the present embodiment, the drainage tube implanting assembly further includes a cap sleeve 30. One end of the cap sleeve 30 is an open end, and the other end is a closed end. The drainage end 11 of the tube body 13 can be inserted into the cap sleeve 30 through the open end of the cap sleeve 30. The shape of the end face of the closed end of the cap sleeve 30 matches the shape of the end face of the drainage end 11 of the tube body 13. The outer contour of the cap sleeve 30 is smooth, and the end face of the closed end of the cap sleeve 30 is a circular arc surface or a spherical surface. A friction surface or a clamping protrusion can be arranged on the inner wall of the open end of the cap sleeve 30 to increase the clamping force when the cap sleeve 30 is sleeved on the drainage end 11 of the tube body 13. After the subcutaneous navigation is completed, the subcutaneous traction needle 200 is removed, and the cap sleeve 30 is covered on the drainage end 11 of the tube body 13, so that the drainage end 11 of the multi-lumen drainage tube 400 is implanted into the target area through the skull hole, the human tissue is prevented from being embedded into the clamping groove 132, and the clamping groove 132 is prevented from interfering with the puncture process.

[0062] Embodiment 4

[0063] Referring to Figure 7As shown, the connection structure in the embodiment includes a sleeve 24 arranged at the connecting end 22 of the subcutaneous traction needle 200, the outer diameter of the sleeve 24 is larger than the outer diameter of the body of the subcutaneous traction needle 200; the sleeve 24 has an opening at the end away from the needle tip puncture end 21 and the drainage end 11 of the tube body 13 can be inserted into the sleeve 24 through the opening end of the sleeve 24. The sleeve 24 of the subcutaneous traction needle 200 can be sleeved on the drainage end 11 of the tube body 13, and the two achieve tight fit, thereby achieving detachable connection of the subcutaneous traction needle 200 and the drainage tube 10, which is simple to disassemble and convenient to use. Meanwhile, only the sleeve 24 of the subcutaneous traction needle 200 has a larger size, and the overall size and weight of the subcutaneous traction needle 200 are relatively small, which is convenient for doctors to operate.

[0064] Further, referring to Figure 7 As shown, the inner wall of the sleeve 24 is provided with a row of limiting protrusions 241 arranged in the axial direction of the sleeve 24, the spacing of the limiting protrusions 241 is equal to the spacing of the drainage holes 131 on the drainage end 11 of the tube body 13, the number of the limiting protrusions 241 is at least two and the limiting protrusions 241 can be embedded into the corresponding drainage holes 131; the limiting protrusions 241 and the few drainage holes 131 on the tube body 13 achieve limiting fit, thereby improving the stability and reliability of the connection of the subcutaneous traction needle 200 and the tube body 13.

[0065] Further, referring to Figure 8 As shown, one side of the sleeve 24 has a notch 242 extending from the opening of the sleeve 24 in the length direction of the sleeve 24; preferably, the limiting protrusions 241 are located on the inner wall of the other side of the sleeve 24 and opposite to the notch 242; the notch 242 occupies 1 / 3-2 / 3 of the entire radial cross section of the sleeve 24 on the cross section of the sleeve 24, for example, the notch 242 can occupy 1 / 2 of the entire radial cross section of the sleeve 24. There is a part of the side wall missing on the sleeve 24, and the remaining part of the side wall is provided with the limiting protrusions 241, which makes it more convenient for the limiting protrusions 241 to be embedded into the drainage holes 131 and also facilitates the disassembly of the subcutaneous traction needle 200 and the drainage tube 10.

[0066] Embodiment 5

[0067] The embodiment is basically the same as embodiment 1, except that the connection structure in the embodiment includes a threaded sleeve arranged at the connecting end 22 of the subcutaneous traction needle 200, the inner wall of the threaded sleeve is provided with internal threads, and the drainage end 11 of the tube body 13 is provided with external threads matched with the internal threads; the connecting end 22 of the subcutaneous traction needle 200 and the drainage end 11 of the tube body 13 are connected through threads, which is stable and reliable and not easy to fall off.

[0068] The embodiments of the present application are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, wherein the same parts are denoted by the same reference numerals. Therefore, any equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A drain tube implant assembly, comprising: The drainage tube implanting assembly comprises a drainage tube (10) and a subcutaneous traction needle (200), the drainage tube (10) comprises a tube body (13), one end of the tube body (13) is a drainage end (11), the other end is a non-drainage end (12), a plurality of drainage holes (131) are arranged on the drainage end (11) of the tube body (13); One end of the subcutaneous traction needle (200) is a needle tip puncture end (21), the other end is a connecting end (22); The connecting end (22) of the subcutaneous traction needle (200) is detachably connected with the drainage end (11) of the tube body (13) through a connecting structure.

2. The drain tube implant assembly of claim 1, wherein, The connecting structure comprises a clamping groove (132) arranged on the drainage end (11) of the tube body (13) and a plug rod (23) arranged on the connecting end (22) of the subcutaneous traction needle (200), the clamping groove (132) extends from the end face of the drainage end (11) of the tube body (13) to the non-drainage end (12) of the tube body (13) along the length direction of the tube body (13), and the plug rod (23) can be embedded in the clamping groove (132) and tightly fit with the tube body (13).

3. The drain tube implant assembly of claim 2, wherein, The plug rod (23) is provided with a pagoda male plug (231) at one end away from the needle tip puncture end (21), and the end face of the pagoda male plug (231) is provided with an arc-shaped guide curved surface (232).

4. A drain tube implant assembly according to claim 2 or 3, wherein, The drainage tube implanting assembly further comprises a blocking plug, the material of the blocking plug is the same as that of the tube body (13), the blocking plug can be embedded in the clamping groove (132) and make the outer contour of the drainage end (11) of the tube body (13) smooth.

5. A drain tube implant assembly according to claim 2 or 3, wherein, The drainage tube implanting assembly further comprises a cap sleeve (30), one end of the cap sleeve (30) is an open end, the other end is a closed end, the drainage end (11) of the tube body (13) can be inserted into the cap sleeve (30) through the open end of the cap sleeve (30), and the end face shape of the closed end of the cap sleeve (30) matches the end face shape of the drainage end (11) of the tube body (13).

6. The drain tube implant assembly of claim 1, wherein, The connecting structure comprises a sleeve (24) arranged on the connecting end (22) of the subcutaneous traction needle (200), the outer diameter of the sleeve (24) is greater than that of the body of the subcutaneous traction needle (200), one end of the sleeve (24) away from the needle tip puncture end (21) is provided with an opening, and the drainage end (11) of the tube body (13) can be inserted into the sleeve (24) through the opening end of the sleeve (24).

7. The drain tube implant assembly of claim 6, wherein, The inner wall of the sleeve (24) is provided with a row of limiting protrusions (241) arranged in the axial direction of the sleeve (24), the spacing of the limiting protrusions (241) is equal to the spacing of the drainage holes (131) on the drainage end (11) of the tube body (13), the number of the limiting protrusions (241) is at least two, and the limiting protrusions (241) can be embedded in the corresponding drainage holes (131).

8. The drain tube implant assembly of claim 7, wherein, One side of the sleeve (24) is provided with a notch (242) extending from the opening of the sleeve (24) along the length direction of the sleeve (24).

9. The drain tube implant assembly of claim 8, wherein, The limiting protrusion (241) is located on the inner wall of the other side of the sleeve (24) and faces the gap (242).

10. The drain tube implant assembly of claim 8, wherein, The gap (242) occupies 1 / 3-2 / 3 of the radial cross section of the sleeve (24) in the cross section of the sleeve (24).

11. The drain tube implant assembly of claim 1, wherein, The connecting structure comprises a threaded sleeve arranged at the connecting end (22) of the subcutaneous traction needle (200), an inner thread is arranged on the inner wall of the threaded sleeve, and the drainage end (11) of the tube body (13) is provided with an outer thread matched with the inner thread.

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