An infection-proof drainage tube and drainage system

Abstract

The present invention provides an infection-proof drainage tube and a drainage system, wherein the infection-proof drainage tube comprises a drainage cavity and an infection-proof cavity, wherein a drainage hole is provided at the distal end of the drainage cavity, and a side wall of the infection-proof cavity is provided with slow-release holes distributed along the length direction of the drainage tube, for releasing the infection-proof drug in the infection-proof cavity to the periphery of the drainage tube. The present invention can continuously and evenly release the infection-proof drug in the entire implanted tube channel of the drainage tube by providing an infection-proof cavity in the drainage tube and providing a series of slow-release holes distributed along the length direction on the side wall of the infection-proof cavity, thereby greatly reducing the infection-proof risk, eliminating the need for doctors to perform disinfection and replacement of drainage tubes, and reducing the workload.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an infection-proof drainage tube and a drainage system. Background Art

[0002] According to clinical experimental studies, drainage can effectively alleviate hydrocephalus, reduce intracranial pressure and clear hematomas, which significantly improves the patient's postoperative recovery effect. The implantation time of the drainage tube varies depending on the drainage site and the different effusion / gas accumulation. For example, the drainage tube is generally placed for 2 to 3 days for chest drainage, and the drainage tube is generally placed for 7 to 9 days after cholechojejunostomy and gastrojejunostomy. For patients undergoing axillary lymph node dissection surgery, if there is a lot of lymph leakage, the drainage tube may be placed for up to ten days. The longer the drainage tube is implanted, the higher the risk of infection.

[0003] Current drainage tubes do not have anti-infection functions. Doctors usually disinfect the wounds, clear purulent secretions and replace the drainage tubes regularly. This treatment method creates a workload for doctors and prolongs the patient's recovery period. Replacing the drainage tube itself also brings the risk of infection.

[0004] There are currently two ways to prevent patients from getting infected during the drainage process: antibacterial coating and drug injection. For antibacterial coating, the main problem is that it is difficult to control the sustained release of the drug. In the initial stage of drainage tube placement, the drug release concentration is high and the effect is good, but as the drainage time increases, the drug concentration becomes lower and lower, and the effect becomes worse and worse. For antibiotic injection, this method can only release antibiotics near the drainage hole, and the released antibiotics are easily diluted by the cerebrospinal fluid circulation or drained out of the body through the drainage hole, making it difficult to maintain the antibacterial effect.

[0005] In order to overcome the defects of the existing drainage tubes, such as high infection risk, workload for doctors, and prolonged recovery period for patients, the present invention proposes an infection-proof drainage tube. Summary of the invention

[0006] In order to overcome the defect of poor anti-clogging effect of the drainage tube in the prior art and improve the drainage efficiency, the present invention proposes an anti-infection drainage tube.

[0007] The present invention provides an anti-infection drainage tube comprising a drainage cavity and an anti-infection cavity, wherein the distal end of the drainage cavity is provided with a drainage hole, and the side wall of the anti-infection cavity is provided with sustained-release holes distributed along the length direction of the drainage tube, for releasing the anti-infection drug in the anti-infection cavity to around the drainage tube.

[0008] Optionally, from the proximal end to the distal end of the drainage tube, the diameter of the sustained-release holes gradually increases, and / or the distribution density of the sustained-release holes gradually increases.

[0009] Optionally, the anti-infection cavity is filled with porous materials, or penetrated with absorbent cotton ropes, or penetrated with dialysis tubes, so that the anti-infection drugs are more evenly distributed in the anti-infection cavity.

[0010] Optionally, the cavity wall of the anti-infection cavity is made of an anti-infection drug sustained-release material, which is used to absorb and release the anti-infection drug to the outer wall of the tube.

[0011] Optionally, the infection-proof cavities include two or more.

[0012] Optionally, it further comprises a perfusion cavity, the distal end of which merges into the drainage cavity; the distal end of the perfusion cavity does not exceed the setting position of the drainage hole.

[0013] Optionally, the distal end of the anti-infection cavity does not exceed the setting position of the drainage holes, and the drainage holes are evenly distributed in the circumference of the drainage tube.

[0014] Optionally, the cross-sectional area of ​​the drainage cavity is larger than the cross-sectional area of ​​the anti-infection cavity.

[0015] Optionally, the proximal end of the drainage cavity is connected to the first catheter, and the proximal end of the anti-infection cavity is connected to the second catheter.

[0016] Optionally, the proximal end of the multi-cavity section is connected to an injection molded part, and a catheter is connected to the drainage cavity and the anti-infection cavity through cavities in the injection molded part respectively.

[0017] Optionally, a development marker is also included.

[0018] Optionally, the drainage tube is provided with scale markings on it.

[0019] Optionally, the drainage tube is made of silicone or soft plastic.

[0020] The present invention also provides a drainage system, comprising any of the aforementioned infection-preventing drainage tubes.

[0021] The infection-proof drainage tube and drainage system of the present invention have at least the following beneficial effects:

[0022] 1. The drainage tube includes a drainage cavity and an anti-infection cavity. The anti-infection cavity contains anti-infection drugs, which can be released through a series of sustained-release holes on the drainage tube along its entire length. The entire implant channel can have a good anti-infection effect, and the drugs can be continuously released, thereby extending the anti-infection protection time.

[0023] 2. The aperture of the sustained-release holes gradually increases from the proximal end to the distal end of the drainage tube, or the distribution density of the sustained-release holes gradually increases, so that the anti-infection drug is released more evenly over the entire length of the drainage tube, thereby improving the anti-infection effect.

[0024] 3. By filling the anti-infection cavity with porous materials or inserting absorbent cotton ropes or dialysis tubes, it is possible to provide power for the anti-infection drugs to be automatically and evenly distributed in the cavity.

[0025] 4. By using the anti-infection drug sustained-release material for the cavity wall of the anti-infection cavity, the sustained-release drug in the anti-infection cavity is absorbed and released to at least part of the outer wall of the tube, so that the anti-infection drug is more evenly distributed in the circumferential direction of the drainage tube.

[0026] 5. By adding a perfusion cavity that merges into the drainage cavity, the blockage of the drainage hole can be effectively relieved without causing liquid reflux, reducing the risk of infection. The perfusion cavity can also be used to inject therapeutic drugs, flush tissues, etc., realizing "one cavity for multiple uses"; the distal end of the perfusion cavity is beyond the setting position of the drainage hole, and the perfusion pressure can be evenly released to the distal end of the drainage cavity, which can effectively clear the blockage of the drainage holes.

[0027] 6. The distal end of the anti-infection cavity (and perfusion cavity) does not exceed the setting position of the drainage holes. The drainage holes can be evenly distributed around the drainage tube, meeting the drainage needs in multiple directions within the skull and improving the drainage rate.

[0028] 7. The drainage tube is provided with directional indicator marks for accurate implantation of the drainage tube in combination with the surgical navigation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is one of the structural schematic diagrams of the drainage tube in the prior art;

[0031] Figure 2 It is one of the structural schematic diagrams of an infection-proof drainage tube provided by the present invention (wherein, Figure AA is a cross-sectional schematic diagram);

[0032] Figure 3 is a cross-sectional schematic diagram of another infection-preventing drainage tube provided by the present invention;

[0033] Figure 4 is a cross-sectional schematic diagram of another infection-preventing drainage tube provided by the present invention;

[0034] Figure 5 This is the second structural schematic diagram of an infection-preventing drainage tube provided by the present invention (wherein, Figures BB and CC are cross-sectional schematic diagrams, respectively);

[0035] Figure 6 This is the second structural schematic diagram of the drainage tube in the prior art;

[0036] Figure 7 This is the third structural schematic diagram of an infection-proof drainage tube provided by the present invention;

[0037] Figure 8 This is the fourth structural schematic diagram of an infection-proof drainage tube provided by the present invention. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Figure 1 This is a schematic diagram of the structure of the drainage tube in the prior art. To implant the drainage tube, a channel needs to be constructed to enter the human body, and pathogens may also enter the human body through the implantation channel of the drainage tube, which brings the risk of infection. The current practice is to disinfect and replace the drainage tube regularly, which creates a workload for doctors and prolongs the recovery period of patients. In addition, replacing the drainage tube itself also brings the risk of infection. In addition, there is also a drainage port through the drainage tube (see Figure 1 The method of injecting anti-infection drugs through the drainage port (as shown) has the following defects: 1. Anti-infection drugs can only be injected into the drainage site (through the drainage hole), which only has the effect of "local infection prevention"; 2. Injecting anti-infection drugs through the drainage channel will cause the drainage fluid to flow back, introducing additional infection risks; 3. The anti-infection drugs released from the drainage site may be drained out of the body again, and its anti-infection effect is poor.

[0040] To this end, the present invention provides an infection-proof drainage tube to reduce the risk of infection and reduce the workload of doctors. Figure 2 As shown, the infection-preventing drainage tube provided by the present invention comprises: a drainage cavity 10 and an infection-preventing cavity 20. A drainage hole 101 is provided at the distal end of the drainage cavity 10, and the drainage hole 101 may include one or more ( Figure 2Only the state including three drainage holes is illustrated). The side wall of the anti-infection cavity 20 is provided with a series of slow-release holes 102 distributed along the length direction of the drainage tube, and the slow-release holes 102 include at least three, which are used to release the anti-infection drug in the anti-infection cavity 20 to the surrounding of the drainage tube. It can be understood that the anti-infection drug can be injected into the anti-infection cavity 20 at one time, or it can be injected intermittently or continuously during the drainage period (especially when the drainage tube is implanted for a long time) to ensure the anti-infection effect. Since the side wall of the anti-infection cavity 20 is distributed with a series of slow-release holes 202 in the length direction, the anti-infection drug can be released into the entire implant channel of the drainage tube through the slow-release holes 202, thereby improving the anti-infection effect. Since the anti-infection drug does not reuse the drainage channel, the independently arranged anti-infection cavity will not cause the drainage fluid to flow back, and it also reduces the possibility of the antibiotics in the drainage site being drained out of the body again, thereby improving the anti-infection effect.

[0041] It can be understood that the "distal end" in the present invention refers to the end closer to the drainage area in the implanted state, and the "proximal end" refers to the end away from the drainage area and close to the outside of the body in the implanted state.

[0042] This embodiment provides an anti-infection cavity in the drainage tube and provides a series of sustained-release holes distributed along the length direction on the side wall of the anti-infection cavity. This can continuously and evenly release anti-infection drugs in the entire implant channel of the drainage tube, greatly reducing the risk of infection. Doctors do not need to disinfect or replace the drainage tube, thus reducing their workload.

[0043] Based on the previous embodiment, in one embodiment, the diameter of the sustained-release hole 201 gradually increases from the proximal end to the distal end of the drainage tube.

[0044] Specifically, refer to Figure 2 A series of sustained-release holes 201 are provided on the side wall of the anti-infection cavity 20 of the drainage tube. Since the anti-infection drug is injected from the proximal end of the anti-infection cavity 20, the sustained-release holes 201 are designed to be "the closer to the distal end of the drainage tube, the larger the aperture of the sustained-release holes 201" to avoid excessive release of the anti-infection drug from the proximal end, so that the concentration of the anti-infection drug released to the periphery of the drainage tube is more uniform in the length direction.

[0045] Based on any embodiment, in one embodiment, the distribution density of the sustained-release holes 201 gradually increases from the proximal end to the distal end of the drainage tube.

[0046] Specifically, refer to Figure 2 A series of sustained-release holes 201 are provided on the side wall of the anti-infection cavity 20 of the drainage tube. Since the anti-infection drug is injected from the proximal end of the anti-infection cavity 20, the sustained-release holes 201 are designed to be "the closer to the distal end of the drainage tube, the greater the distribution density of the sustained-release holes 201" to avoid excessive release of the anti-infection drug from the proximal end, making it more evenly released in the length direction of the drainage tube.

[0047] Based on any embodiment, in one embodiment, the anti-infection cavity 20 is filled with porous materials, or penetrated with absorbent cotton ropes, or penetrated with dialysis tubes, so that the anti-infection drugs are more evenly distributed in the anti-infection cavity 20.

[0048] Specifically, porous materials such as porous carbon composite materials, sponge materials, etc. can be filled in the anti-infection cavity 20. On the one hand, the porous material can effectively adsorb the anti-infection drug, so that the anti-infection drug is more evenly distributed in the length direction of the anti-infection cavity 20. On the other hand, due to the adsorption of the porous material, it can also improve the "slow release" effect, extend the duration of the action of the anti-infection drug, and further improve the anti-infection performance. In addition, a wool absorbent cotton rope can also be inserted into the anti-infection cavity 20, and the capillary phenomenon is used to make the anti-infection drug more evenly distributed in the length direction of the anti-infection cavity. Alternatively, a dialysis tube can be inserted into the anti-infection cavity 20, and the anti-infection drug is injected into the dialysis tube, and the concentration difference of the anti-infection drug in the length direction of the dialysis tube is used to make it more evenly distributed, and the concentration difference of the anti-infection drug inside and outside the dialysis tube is used to release the anti-infection drug outside the dialysis tube.

[0049] It can be understood that this embodiment is particularly suitable for the application scenarios of "one-time injection of anti-infection drugs" or "intermittent injection of anti-infection drugs". The porous material or capillary can provide the power for the anti-infection drugs to "diffuse" in the cavity, so that they are automatically evenly distributed.

[0050] Based on any embodiment, in one embodiment, the cavity wall of the anti-infection cavity 20 is made of an anti-infection drug sustained-release material, which is used to absorb and release the anti-infection drug to the outer wall of the tube.

[0051] Specifically, the anti-infection drug sustained-release material can absorb and slowly release the anti-infection drug, such as nano-hydroxyapatite, polymethyl methacrylate, porous polyurethane and the like.

[0052] Reference Figure 3 The cavity wall 202 of the anti-infection cavity 20 is made of an anti-infection drug sustained-release material, which can absorb and release the anti-infection drug in the anti-infection cavity 20 to all or part of the outer wall of the tube. Figure 4 The cavity wall 202 of the anti-infection cavity 20 is made of anti-infection drug sustained-release material. The area made of anti-infection drug sustained-release material extends from the anti-infection cavity 20 and surrounds the cavity wall 102 of the drainage cavity 10, which can absorb the anti-infection drug in the anti-infection cavity 20 and release it to the entire outer wall of the tube.

[0053] Understandably, Figure 4It is only illustrated that the entire cavity wall of the anti-infection cavity 20 is made of the anti-infection drug sustained-release material. Part of the cavity wall of the anti-infection cavity 20 can also be made of the anti-infection drug sustained-release material to absorb and release the anti-infection drug to at least a part of the outer wall of the tube.

[0054] Furthermore, the cavity wall 102 of the drainage cavity 10 may be made of a material with a low absorption rate for anti-infection drugs, such as polyurethane, silicone, soft plastic, etc., to prevent the anti-infection drugs from passing through the cavity wall and being drained out of the body by the fluid in the drainage cavity 10. Figure 3 FIG. 2 shows a case where the boundary between the cavity wall 202 and the cavity wall 102 is a curve. The boundary between the two can also be designed as a straight line to reduce the manufacturing difficulty. Figure 3 When the drainage tube shown in the figure is specifically manufactured, the tube body part corresponding to the cavity wall 202 and the tube body corresponding to the cavity wall 102 can be manufactured separately and then connected into one by bonding or welding to obtain a drainage tube. Figure 4 When the drainage tube shown in the figure is specifically manufactured, the tube body portion corresponding to the cavity wall 202 can be manufactured first, and then the cavity wall 102 can be formed by "adding a coating layer" in the drainage cavity.

[0055] This embodiment absorbs and releases the anti-infection drug to at least a portion of the outer wall of the tube by selecting the material of the wall of the anti-infection cavity, so that the anti-infection drug can be released along the tube body to the periphery of the drainage tube, further expanding the distribution range of the anti-infection drug on the implanted pipeline and improving the anti-infection effect.

[0056] Based on any of the embodiments, in one embodiment, the anti-infection cavity includes two or more. That is, more "sources" of anti-infection drugs are provided, so that the release distribution of anti-infection drugs is more uniform. Specifically, multiple anti-infection cavities can provide more locations for setting sustained-release holes. In the case of "releasing anti-infection drugs through the tube body" in the previous embodiment, setting more anti-infection cavities can also shorten the average release distance between the anti-infection cavity and the outer wall of the drainage tube.

[0057] Reference Figure 5 Based on any embodiment, in one embodiment, the drainage tube further includes a perfusion cavity 30 , and the distal end of the perfusion cavity 30 merges into the drainage cavity 10 ; the distal end of the perfusion cavity 30 does not exceed the setting position of the drainage hole 101 .

[0058] Figure 5 The middle section BB shows the cross-sectional state before the perfusion cavity 30 merges into the drainage cavity 10. At this time, the drainage tube includes three cavities: the drainage cavity 10, the infection prevention cavity 20, and the perfusion cavity 30. Figure 5 The middle section CC illustrates the cross-sectional state after the perfusion cavity 30 merges into the drainage cavity 10 . At this time, the drainage tube includes two cavities: the drainage cavity 10 and the anti-infection cavity 20 .

[0059] When the drainage hole of the existing single-lumen drainage tube is blocked, reverse perfusion is performed through the drainage cavity to flush out the blockage such as tissue and blood clots (refer to Figure 1 ), which will cause drainage fluid to flow back, increasing the risk of secondary infection. Compared with the existing single-lumen drainage tube, the drainage tube designed in this embodiment is filled with physiological saline, artificial cerebrospinal fluid and other liquids through the perfusion cavity 30 when the drainage hole is blocked. This process does not need to use drainage fluid backflow to clear the blockage, reducing the risk of infection, and the perfusion cavity can also be used to inject therapeutic drugs, flush tissues, etc., realizing "one cavity for multiple uses".

[0060] Reference Figure 6 , the prior art also has a solution for removing the blockage of drainage holes by using a double-lumen drainage tube, which includes a parallel drainage cavity and a perfusion cavity, and a side hole is opened at the end of the perfusion cavity for releasing the perfusion liquid into the drainage cavity. Most of the pressure released by the side hole is released through the drainage hole closest to it, that is, this solution can only remove the blockage of some drainage holes. Compared with the existing double-lumen drainage tube, in the drainage tube designed in this embodiment, the end of the perfusion cavity 30 merges into the drainage cavity 10, and the distal end of the perfusion cavity does not exceed the setting position of each drainage hole 101 (or, the distance between the distal end of the perfusion cavity and the rearmost drainage hole is greater than the set threshold, such as 2cm, 3cm, etc.), so the perfusion pressure can be evenly released to the end of the drainage cavity 10, which can effectively flush the blockage at each drainage hole 101.

[0061] The drainage tube of this embodiment can effectively unblock multiple drainage holes through a further designed perfusion cavity without causing liquid reflux, thereby reducing the risk of infection and improving drainage efficiency. The perfusion cavity can also be used to inject therapeutic drugs, flush tissues, etc., realizing "one cavity for multiple uses".

[0062] Based on any of the embodiments, in one embodiment, the distal end of the anti-infection cavity 20 is set to a position that does not exceed the drainage hole 101, or in combination with the previous embodiment, the distal ends of the anti-infection cavity 20 and the perfusion cavity 30 are both set to a position that does not exceed the drainage hole 101. At this time, the distal end of the drainage tube is a "single cavity section", and the drainage holes 101 can be evenly arranged in the circumferential direction of the distal end of the drainage tube (without avoiding the anti-infection cavity 20) to meet the drainage needs in all directions. On the other hand, the anti-infection drugs released by the anti-infection cavity 20 can avoid the drainage area to a certain extent to prevent being directly drained out of the body. It can be understood that in this embodiment, the distal end of the anti-infection cavity 20 is in a closed state to prevent the anti-infection drugs from being injected into the drainage cavity 10.

[0063] Based on any embodiment, in one embodiment, the cross-sectional area of ​​the drainage cavity 10 is greater than the cross-sectional area of ​​the anti-infection cavity 20 .

[0064] Usually, the drainage flow rate is generally greater than the injection flow rate of anti-infection drugs, refer to Figure 2 , setting the cross-sectional area of ​​the drainage cavity 10 larger than the cross-sectional area of ​​the infection prevention cavity 20 can avoid a large drainage pressure at a local location and prevent unnecessary damage to the patient. The cross-sectional shape of the cavity can be set according to demand, such as circular, elliptical, rectangular, etc.

[0065] Reference Figure 7 Based on any embodiment, in one embodiment, the proximal end of the drainage cavity 10 is connected to the first catheter 40, and the proximal end of the anti-infection cavity 20 is connected to the second catheter 50.

[0066] Drainage cavity 10( Figure 7 The proximal end of the first catheter 40 is connected to the first catheter 40 so as to output the drainage liquid to a container (such as a drainage bag), and the infection prevention cavity 20 ( Figure 7 The proximal end of the second catheter 50 is connected to the infusion chamber (not shown) to introduce the flushing liquid into the perfusion chamber. It can be understood that the input flushing liquid needs to have a certain pressure to achieve the flushing effect.

[0067] Furthermore, the drainage cavity / anti-infection cavity and the corresponding catheter may be integrally connected, for example, the catheter is connected to the corresponding inner cavity and then heated and welded. The catheter may also be detachably connected to the corresponding inner cavity, for example, the catheter is threadedly connected to the corresponding inner cavity, or the catheter is clipped into the corresponding inner cavity. In the case of detachable connection, a sealing gasket may be provided to improve the sealing performance.

[0068] Reference Figure 2 , Figure 5 , Figure 7 , Figure 8 Based on any embodiment, in one embodiment, the proximal end of the drainage tube is connected to an injection molded part 60, a cavity is provided in the injection molded part 60, and the catheter is connected to the drainage cavity and the anti-infection cavity through the cavity in the injection molded part 60 respectively.

[0069] Specifically, refer to Figure 2 , Figure 7 The drainage tube is provided with two inner cavities 10 and 20. The proximal end of the drainage tube is connected to the injection molded part 60. The injection molded part 60 is provided with two cavities. The two catheters 40 and 50 at the proximal end are connected to the corresponding inner cavities of the drainage tube through the corresponding cavities. Figure 5 , Figure 8 The drainage tube is provided with three inner cavities 10, 20, 30, and the injection molded part 60 is provided with three cavities. The three catheters 40, 50, 70 at the proximal end are respectively connected to the corresponding inner cavities of the drainage tube through the corresponding cavities.

[0070] It is understandable that the drainage tube may include more lumens. Of course, not all lumens lead out catheters. If the proximal end of a lumen of the drainage tube is not connected to a catheter, a through hole for entering the corresponding lumen may be reserved on the side wall of the drainage tube or on the injection molded part 60. For example, the channel for passing the guide needle / guide wire does not need to be connected to the catheter. The guide needle / guide wire passes through the through hole reserved on the injection molded part 60 and enters the guide needle / guide wire cavity to guide the implantation direction of the drainage tube. The injection molded part 60 can play a role in strengthening the strength of the transition. In addition, the injection molded part 60 can also adjust the direction of the leading catheter to a suitable angle to avoid interference between the leading catheters.

[0071] When making the drainage tube, the catheter can be docked with the corresponding cavity in the drainage tube, and then material is added around the docking point and injection molded to form the injection molded part 60. If the proximal end of a certain inner cavity of the drainage tube is not connected to the catheter, a through hole entering the inner cavity can be reserved by adding a core during manufacturing.

[0072] Based on the previous embodiment, in one embodiment, the drainage tube includes a development marker.

[0073] Specifically, refer to Figure 2 , Figure 5 The distal end (head) of the drainage tube is a blind end, and a developing marker can be set in the blind end, or in the body of the drainage tube. The developing marker can assist in indicating the implantation position of the drainage tube and improve the accuracy of the operation. The developing markers include iodine preparations (triiodobenzene, iopamidol, etc. that can be developed under X-rays) and barium sulfate. The developing markers can be centrally set at one or more locations of the blind end or the body of the tube, or they can be doped in the entire blind end material or the body of the tube. It is understandable that the above-mentioned body of the tube includes the tube wall and the interval between the cavities.

[0074] Based on any embodiment, in one embodiment, a directional indicator mark is provided in the drainage tube, and the directional indicator mark can be tracked by the surgical navigation system, so that during the process of implanting the drainage tube, the surgical navigation system can be used to track and locate the drainage tube, so as to accurately implant the drainage tube into the target position.

[0075] Based on any embodiment, in one embodiment, the drainage tube is provided with scale markings.

[0076] Specifically, the body of the drainage tube is also provided with a scale mark, and the doctor can determine the implant depth according to the scale mark and accurately drain the target area. Further, the scale mark may include scale lines and / or depth digital marks, etc., to facilitate the doctor's identification.

[0077] Based on any embodiment, in one embodiment, the drainage tube is made of silicone or soft plastic.

[0078] Specifically, when the anti-infection drug is released only through the anti-infection cavity and the sustained-release hole, the drainage tube can be made of silicone or soft plastic, such as polyethylene (PE), polypropylene (PP), polystyrene (PS), polyvinyl chloride (PVC), nylon (Nylon), polyurethane (PU), thermoplastic polyurethane (TPU), polytetrafluoroethylene (Teflon, PTFE), etc.

[0079] Silicone and soft plastics have the characteristics of low water absorption, good chemical resistance and easy processing. They are easy to process and can meet clinical drainage needs.

[0080] The present invention also provides a drainage and perfusion system, comprising the anti-infection drainage tube described in any of the above items. The distal end of the anti-infection drainage tube is implanted in the patient's body, and the proximal end of the anti-infection drainage tube is respectively connected to the drainage catheter and the anti-infection drug input catheter. The cerebrospinal fluid, hematoma, etc. in the patient's body can be discharged into an external container through the drainage cavity and the drainage catheter. In addition, the anti-infection drug can also be input into the anti-infection cavity through the input catheter, and released to the periphery of the drainage tube through the slow-release hole or the cavity wall material of the anti-infection cavity, thereby reducing the risk of infection during drainage.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An infection-proof drainage tube, characterized in that: The drainage tube comprises a drainage cavity and an anti-infection cavity. The distal end of the drainage cavity is provided with a drainage hole. The side wall of the anti-infection cavity is provided with slow-release holes distributed along the length direction of the drainage tube, which are used to release the anti-infection drug in the anti-infection cavity to the periphery of the drainage tube, thereby improving the anti-infection effect on the implanted tube channel. The drainage tube further comprises a perfusion cavity, the distal end of which merges into the drainage cavity; the distal end of the perfusion cavity does not exceed the setting position of the drainage hole.

2. The infection-preventing drainage tube according to claim 1, characterized in that: From the proximal end to the distal end of the drainage tube, the diameter of the sustained-release holes gradually increases, and / or the distribution density of the sustained-release holes gradually increases.

3. The infection-preventing drainage tube according to claim 1, characterized in that: The anti-infection cavity is filled with porous materials, or penetrated with absorbent cotton ropes, or penetrated with dialysis tubes, so that the anti-infection drugs are distributed more evenly in the anti-infection cavity.

4. The infection-preventing drainage tube according to claim 1, characterized in that: The cavity wall of the anti-infection cavity is made of an anti-infection drug sustained-release material, which is used to absorb the anti-infection drug and release it to the outer wall of the tube.

5. The drainage tube according to claim 1, characterized in that: The infection-proof chamber comprises two or more.

6. The infection-preventing drainage tube according to claim 1, characterized in that: The distal end of the anti-infection cavity does not exceed the setting position of the drainage holes, and the drainage holes are evenly distributed in the circumference of the drainage tube.

7. The infection-preventing drainage tube according to claim 1, characterized in that: The proximal end of the drainage cavity is connected to the first catheter, and the proximal end of the anti-infection cavity is connected to the second catheter.

8. The infection-preventing drainage tube according to claim 1, characterized in that: The proximal end of the multi-cavity section is connected to the injection molded part, and the catheter is connected to the drainage cavity and the anti-infection cavity through the cavity in the injection molded part respectively.

9. The infection-preventing drainage tube according to claim 1, characterized in that: Also included are development markers.

10. The infection-preventing drainage tube according to claim 1, characterized in that: The body of the drainage tube is provided with scale marks.

11. A drainage system, characterized in that: The invention comprises the infection-proof drainage tube according to any one of claims 1 to 10.

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