Anti-bending drainage tube
By designing a shaped inner tube, a clamping structure, and a counter-strengthening tube, the problem of drainage hole deformation during the bending process of the drainage tube was solved, achieving stable bending and precise shaping of the drainage tube, thus ensuring drainage effect and postoperative wound healing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BECKDAL (SHANGHAI) MEDTECH CO LTD
- Filing Date
- 2024-12-31
- Publication Date
- 2026-04-24
AI Technical Summary
Existing drainage tubes are prone to deformation of the drainage hole during bending, which affects the drainage effect and may even prevent the drainage of fluid in the patient's body, affecting the judgment of medical staff.
It adopts a shaped inner tube and clamping structure, and drives the drainage tube to bend through the bending control line and fix it after bending. Combined with the inlet and outlet channels, the bending control line is inserted through separate channels. A counteracting reinforcement tube is set to prevent the coaxial needles from being out of sync. A imaging ring is used to assist in positioning.
Without affecting the bending of the drainage tube, reduce the deformation of the drainage hole, ensure the drainage effect, prevent postoperative infection, avoid surgical failure, and improve the shape and precision of the drainage tube.
Smart Images
Figure CN224156149U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of drainage tube technology, and in particular to a bend-resistant drainage tube. Background Technology
[0002] Drainage tubes are widely used and common medical consumables in surgical clinics. They are often used to guide pus, blood, and fluid accumulated in human tissues or cavities such as wounds, pleural cavities, brain cavities, gastrointestinal tracts, and bile ducts to the outside of the body to prevent postoperative infection and affect wound healing.
[0003] When using existing drainage tubes, they need to be used in conjunction with a puncture coaxial needle and a bending control line. That is, the drainage tube is inserted through the puncture coaxial needle, and the end of the drainage tube is inserted into the human body by puncture. After that, the coaxial needle is withdrawn, and the bending control line is pulled to gradually bend the tip of the drainage tube into a pig tail shape, so that drainage can be performed through the drainage hole set in the tip of the drainage tube.
[0004] However, in practical applications, when using a bend control line to control the bending of the end of the drainage tube, the drainage tube itself has a small wall thickness, and the drainage holes distributed around the tip of the drainage tube will also deform when the drainage tube is bent, thus affecting the drainage effect of the drainage tube. When the degree of bending deformation is large, it may even cause the accumulated fluid in the patient's body to be unable to drain, affecting the judgment of medical staff. Utility Model Content
[0005] To address the problem that existing drainage tubes are prone to deformation of the drainage hole during bending, thus affecting the drainage effect, this application provides a bending-resistant drainage tube.
[0006] This application provides a bend-resistant drainage tube, which adopts the following technical solution:
[0007] A bend-resistant drainage tube includes a drainage tube body, one end of which is provided with a connector seat. The connector seat is provided with a bend control wire and a clamping structure for clamping and fixing the taut bend control wire. The inner wall of the drainage tube body away from the connector seat is provided with a plastic inner tube. The plastic inner tube is provided with a relief groove, which is provided with a drainage hole on the drainage tube body. The end of the drainage tube body away from the connector seat is provided with a wire-passing hole for passing through the bend control wire.
[0008] By adopting the above technical solution, during use, the drainage tube body is bent away from the connector seat by pulling the bending control line. During the bending process of the drainage tube body, the setting of the plastic inner tube reduces the deformation and shrinkage of the drainage hole without affecting the bending of the drainage tube body. When the drainage tube body is bent into a pig tail shape, the tightened bending control line can be fixed by the clamping structure to shape the end of the drainage tube body. Then the drainage operation can be completed through the drainage tube body.
[0009] Preferably, the inner wall of the drainage tube is provided with a groove, the shaped inner tube is embedded in the groove, and the inner diameter of the shaped inner tube is the same as the inner diameter of the drainage tube.
[0010] By adopting the above technical solution, the use of the groove and the plastic inner tube reduces the impact of the plastic inner tube on the drainage tube's internal channel, thereby ensuring the drainage effect.
[0011] Preferably, the shaped inner tube has a plurality of first cutting grooves, which are spaced apart along the axial direction of the shaped inner tube. A second cutting groove is provided between two adjacent first cutting grooves, and the first cutting groove and the second cutting groove are located on opposite sides of the outer wall of the shaped inner tube.
[0012] By adopting the above technical solution, the combination of the first and second cutting grooves during use makes the drainage tube body easier to bend and also forms support for the drainage tube body, further reducing the occurrence of deformation and shrinkage of the drainage hole.
[0013] Preferably, the outer walls at both ends of the shaped inner tube are provided with a third cutting groove, and there are several third cutting grooves, which are evenly distributed along the periphery of the shaped inner tube. The inner wall of the groove is provided with a locking block, which is fitted and cooperates with the third cutting groove.
[0014] By adopting the above technical solution, the structural strength of the connection between the plastic inner tube and the drainage tube body is ensured by the cooperation of the locking block and the third cutting groove during use, thereby ensuring the normal use quality of the drainage tube body.
[0015] Preferably, the clamping structure includes an elastic buckle disposed on the connector seat and a handle disposed on the elastic buckle. The side wall of the elastic buckle has a clamping notch, and the connector seat has an annular groove. The elastic buckle is embedded in the annular groove through the clamping notch. The side wall of the elastic buckle also has a threading hole for the control bending wire to pass through.
[0016] By adopting the above technical solution, when in use, the two ends of the control line are wrapped between the thread hole and the through hole, which makes it easier for medical staff to adjust the bending of the drainage tube when pulling the control line. With the help of the elastic buckle and the ring groove, the purpose of fixing the tightened control line can be achieved, thereby achieving the purpose of shaping the drainage tube after bending.
[0017] Preferably, the drainage tube body has an inlet channel and an outlet channel for threading the control bend wire. One end of the control bend wire passes through the inlet channel, the channel inside the drainage tube body, the wire through hole, the outlet channel and the wire through hole in sequence before connecting to the other end.
[0018] By adopting the above technical solution, during use, the inlet and outlet channels are set to separate the channel through which the control wire passes from the channels through which pus, blood, and fluid accumulate in the patient's wounds, pleural cavity, brain cavity, gastrointestinal tract, bile duct, and other human tissues or cavities during drainage, which can better prevent postoperative infection and affect wound healing.
[0019] Preferably, a counteracting reinforcement tube is provided on the inner wall at the tip of the drainage tube, and one end of the counteracting reinforcement tube abuts against the end face of the outer sleeve of the coaxial needle.
[0020] By adopting the above technical solution, during use, by setting up a counter-reinforcing tube, when the tip of the drainage tube encounters resistance from human tissue during clinical puncture, the tip of the drainage tube abuts against the end face of the outer sheath of the coaxial needle, positioning the outer sheath of the coaxial needle. This ensures that the outer sheath of the coaxial needle will not be squeezed into the inner hole of the counter-reinforcing tube due to the elastic-plastic deformation of the tip of the drainage tube. This avoids the situation where the coaxial needle and the drainage tube are not inserted at the same depth during the overall insertion of the drainage tube, which could lead to surgical failure. At the same time, it ensures that the tip of the drainage tube will not bend or bulge when the outer sheath of the coaxial needle is withdrawn.
[0021] Preferably, a contrast ring is provided near the tip of the drainage tube.
[0022] By adopting the above technical solution, the use of the imaging ring helps medical staff to accurately control the drainage tube for positioning, thereby ensuring the drainage effect.
[0023] In summary, this application includes at least one of the following beneficial technical effects:
[0024] 1. By pulling the control bending line, the drainage tube body is bent away from the connector seat. During the bending process of the drainage tube body, the setting of the plastic inner tube and the setting of the first and second cutting grooves on the plastic inner tube can reduce the deformation and shrinkage of the drainage hole without affecting the bending of the drainage tube body. When the drainage tube body is bent into a pig tail shape, the clamping structure can be used to fix the tightened control bending line, thereby shaping the end of the drainage tube body. Then the drainage operation can be completed through the drainage tube body.
[0025] 2. By setting up inlet and outlet channels, the channel through which the control line passes is separated from the channels through which pus, blood, and fluid accumulate in the patient's wounds, pleural cavity, brain cavity, gastrointestinal tract, bile duct, and other human tissues or cavities during drainage, which can better prevent postoperative infection and affect wound healing.
[0026] 3. By setting up a counter-reinforcing tube, it is ensured that during clinical puncture, the outer sheath of the coaxial needle will not be squeezed into the inner hole of the counter-reinforcing tube due to the elastic-plastic deformation of the tip of the drainage tube. This avoids the situation where the coaxial needle and the drainage tube are not inserted at the same depth during the overall insertion of the drainage tube, which could lead to surgical failure. It also ensures that the outer sheath of the coaxial needle will not cause the tip of the drainage tube to bend and bulge when it is withdrawn. Attached Figure Description
[0027] Figure 1 This is an isometric schematic diagram of the main overall structure in the embodiments of this application;
[0028] Figure 2 This is a cross-sectional view of the tip structure of the drainage tube in the embodiments of this application;
[0029] Figure 3 This is a frontal schematic diagram of the internal structure of the drainage tube, which is the main feature of this embodiment.
[0030] Figure 4 This is a rear view of the main internal structure of the drainage tube in the embodiments of this application;
[0031] Figure 5 This is a schematic diagram illustrating the main clamping structure in the embodiments of this application;
[0032] Figure 6 This is a side view of the main shaped inner tube structure in the embodiments of this application;
[0033] Figure 7 This is a frontal schematic diagram of the main shaped inner tube structure in the embodiments of this application.
[0034] Reference numerals: 1. Drainage tube body; 11. Inlet channel; 12. Outlet channel; 13. Through hole; 14. Drainage hole; 2. Connector seat; 21. Ring groove; 22. Sheath tube; 23. Threaded connector; 3. Bending control wire; 4. Clamping structure; 41. Elastic retaining ring; 42. Handle; 43. Clamping notch; 44. Through hole; 45. Clamping teeth; 5. Molded inner tube; 51. Clearance groove; 52. First cutting groove; 53. Second cutting groove; 54. Third cutting groove; 6. Anti-reinforcing tube; 7. Imaging ring; 8. Coaxial needle; 9. Outer tube. Detailed Implementation
[0035] The following is in conjunction with the appendix Figure 1 - Appendix Figure 7 This application will be described in further detail.
[0036] This application discloses an anti-bending drainage tube.
[0037] Reference Figure 1A bend-resistant drainage tube includes a horizontally placed drainage tube body 1. A connector seat 2 is fixed to the left end of the drainage tube body 1. A sheath tube 22 is provided at the connection between the connector seat 2 and the drainage tube body 1. A pointed tip is formed at the end of the drainage tube body 1 away from the connector seat 2. A wire hole 13 is opened on the side wall of the pointed tip of the drainage tube body 1. The wire hole 13 communicates with the inner channel of the drainage tube body 1. In this embodiment, the drainage tube body 1 is made of polymer material. A threaded connector 23 is provided at the left end of the connector seat 2. A through hole for a coaxial needle 8 to pass through is opened on the threaded connector 23. The threaded connector 23 is threadedly connected to the needle handle of the coaxial needle 8.
[0038] Reference Figure 1 and Figure 2 A counteracting reinforcement tube 6 is fixed on the inner wall of the tip of the drainage tube body 1. The end of the counteracting reinforcement tube 6 facing the connector seat 2 abuts against the end of the outer sleeve 9 of the coaxial needle 8. In this embodiment, the material of the counteracting reinforcement tube 6 is the same as that of the drainage tube body 1. Alternatively, a polymer material that is compatible with the material of the drainage tube body 1 and has a strength greater than that of the material of the drainage tube body 1 can be selected.
[0039] Reference Figure 1 and Figure 2 When in use, the structural strength of the tip of the drainage tube body 1 is enhanced by the counter-reinforcing tube 6. At the same time, the outer tube 9 of the coaxial needle 8 is abutted and limited when the coaxial needle 8 is punctured. This ensures that during the clinical puncture process, the outer tube 9 of the coaxial needle 8 will not be squeezed into the inner hole of the counter-reinforcing tube 6 due to the elastic-plastic deformation of the tip of the drainage tube body 1. This avoids the situation where the coaxial needle 8 and the drainage tube body 1 are not inserted at the same depth during the overall insertion of the drainage tube body 1, which could lead to surgical failure. It also ensures that the outer tube 9 of the coaxial needle 8 will not cause the tip of the drainage tube body 1 to bend and bulge when it is withdrawn.
[0040] Reference Figure 1 and Figure 2 In this embodiment, the reinforcing tube 6 and the drainage tube body 1 are molded separately and then fixed together by hot melting. This avoids the situation where the cross section of the coaxial needle 8's outer tube 9 is not flush due to the difficulty in controlling the flow direction of the polymer during the one-piece molding process. This would prevent the tip of the drainage tube body 1 from being well-contacted with the end face of the coaxial needle 8's outer tube 9, and as a result, the outer tube 9 of the coaxial needle 8 would be squeezed into the inner hole of the reinforcing tube 6 during the insertion of the coaxial needle 8 into the drainage tube body 1.
[0041] Reference Figure 1 , Figure 3 and Figure 4A bending control wire 3 and a clamping structure 4 are provided on the connector seat 2. An inlet channel 11 and an outlet channel 12 are provided on the drainage tube body 1. Both the inlet channel 11 and the outlet channel 12 are located between the connector seat 2 and the tip of the drainage tube body 1, and the length directions of the inlet channel 11 and the outlet channel 12 are parallel to each other. In use, one end of the bending control wire 3 is first inserted into the inlet channel 11 near the connector seat 2, and then enters the drainage tube body 1 through the opening of the inlet channel 11 near the tip of the drainage tube body 1. After that, it is inserted into the wire hole 13, and then inserted into the outlet channel 12 near the tip of the drainage tube body 1, and then exited through the outlet channel 12 near the opening of the connector seat 2. This is how the bending control wire 3 is installed.
[0042] Reference Figure 3 and Figure 4 After the coaxial needle 8 is withdrawn from the drainage tube body 1, the control line 3 can be tightened to gradually bend the tip of the drainage tube body 1 into a pig tail shape. Then, the clamping structure 4 is used to fix the tightened control line 3 to prevent it from loosening, thereby shaping the tip of the drainage tube body 1. Drainage can then be performed through the drainage hole 14 near the tip of the drainage tube body 1. During the drainage process, the control line 3 is isolated by the inlet channel 11 and the outlet channel 12, that is, the passage of the control line 3 is separated from the channels for pus, blood, and fluid accumulated between or in the patient's wound, chest cavity, brain cavity, gastrointestinal tract, bile duct, and other human tissues or body cavities during drainage, which can better prevent postoperative infection and affect wound healing.
[0043] Reference Figure 1 and Figure 5 The clamping structure 4 includes an elastic buckle 41 and a handle 42. The elastic buckle 41 is a ring-shaped structure made of plastic. The handle 42 is integrally formed on one side of the elastic buckle 41. A clamping notch 43 is provided on the side of the elastic buckle 41 away from the handle 42. An annular groove 21 is provided on the connector seat 2. The opening size of the clamping notch 43 is slightly smaller than the diameter of the inner wall of the annular groove 21. Several locking teeth 45 are formed on the inner wall of the elastic buckle 41. The locking teeth 45 are distributed at intervals along the periphery of the elastic buckle 41. A wire hole 44 is also provided on the side wall of the elastic buckle 41.
[0044] Reference Figure 1 and Figure 5 In use, the end of the control line 3, which is threaded through the tip of the drainage tube body 1, is wrapped and fixed to the elastic buckle 41 through the thread hole 44. Then, the elastic buckle 41 is pressed and snapped into the ring groove 21 through the clamping notch 43. This achieves the purpose of fixing the tightened control line 3. When the elastic buckle 41 is snapped into the ring groove 21, the snapping stability of the elastic buckle 41 is ensured by the setting of the snapping teeth 45, so as to avoid the situation where the elastic buckle 41 is detached from the ring groove 21 under the tension of the control line 3.
[0045] Reference Figure 1 and Figure 5 During the bending process of the tip of the drainage tube 1, in order to prevent the diameter of the drainage hole 14 from decreasing due to bending deformation, thereby affecting the drainage effect, a groove is provided on the inner wall of the drainage tube 1 near the tip. A plastic inner tube 5 is installed in the groove. The inner diameter of the plastic inner tube 5 is the same as the inner diameter of the drainage tube 1. Thus, the groove limits the plastic inner tube 5 during use, ensuring the stability of the installation structure of the plastic inner tube 5.
[0046] Reference Figure 3 and Figure 6 Several third cutting grooves 54 are provided at both ends of the shaped inner tube 5. The several third cutting grooves 54 are evenly distributed around the outer wall of the shaped inner tube. At the same time, several locking blocks are formed on the inner wall of the groove. The locking blocks are distributed one-to-one with the third cutting grooves 54, and the locking blocks and the third cutting grooves 54 form an embedded fit. In this embodiment, the shaped inner tube 5 is a metal tube. During processing, the shaped inner tube 5 is wrapped in the drainage tube body 1 by hot melting casting, so that the locking blocks are formed at the corresponding positions of the third cutting grooves 54, thereby further ensuring the stability of the inner cavity structure of the shaped inner tube 5.
[0047] Reference Figure 6 and Figure 7 Since the inner tube 5 is made of metal, in order to avoid the inner tube 5 affecting the bending of the drainage tube body 1, a first cutting groove 52 and a second cutting groove 53 are formed on the side wall of the inner tube 5 by laser cutting. Several first cutting grooves 52 and several second cutting grooves 53 are provided, and the several first cutting grooves 52 and several second cutting grooves 53 are arranged along the axial direction of the drainage tube body 1. Each second cutting groove 53 is located between two adjacent first cutting grooves 52, and the second cutting grooves 53 and the first cutting grooves 52 are distributed on opposite sides of the drainage tube body 1.
[0048] Reference Figure 6 In the actual processing, the depth and width of the first cutting groove 52 and the second cutting groove 53, as well as the distance between two adjacent first cutting grooves 52, can be adjusted as needed to change the hardness of the plastic inner tube 5, that is, to provide structural support for the inner wall of the drainage tube 1 without affecting the normal bending of the drainage tube body 1.
[0049] Reference Figure 6 and Figure 7In this embodiment, the width of the first cutting groove 52 is greater than the width of the second cutting groove 53. Simultaneously, a clearance groove 51 is laser-cut into the shaped inner tube 5. The clearance groove 51 corresponds to the drainage hole 14. In this embodiment, multiple clearance grooves 51 and drainage holes 14 are provided, and these multiple clearance grooves 51 and drainage holes 14 are evenly distributed along the axial direction of the drainage tube body 1. During use, the hardness of the metal shaped inner tube 5 is altered by the multiple first cutting grooves 52 and second cutting grooves 53, allowing the shaped inner tube 5 to bend with the drainage tube body 1. This also provides support for the inner wall of the drainage tube body 1. Combined with the clearance grooves 51, this reduces the possibility of the drainage hole 14 shrinking due to deformation, thus ensuring the drainage effect during subsequent use.
[0050] Reference Figure 1 and Figure 3 In addition, a contrast ring 7 is provided on the drainage tube body 1. The contrast ring 7 is located near the tip of the drainage tube body 1. During use, the contrast ring 7 assists medical staff in operation, ensuring the accuracy of the drainage tube insertion surgery and making it more convenient to use.
[0051] The implementation principle of this application embodiment is as follows: In use, the coaxial needle 8 is first inserted into the drainage tube body 1. Then, the drainage tube body 1 and the coaxial needle 8 are simultaneously inserted into the patient's body. After the medical staff judges that the tip of the drainage tube body 1 has reached the designated position through the imaging ring 7, the coaxial needle 8 can be withdrawn from the drainage tube body 1. Then, the bending control line 3 is pulled to bend the part of the drainage tube body 1 near the tip into a pig tail shape. After bending, the bending control line 3 is tightened and tied to the elastic buckle 41. Then, the elastic buckle 41 is fastened in the ring groove 21 to fix the tip of the drainage tube body 1. Finally, the drainage operation can be realized through the drainage hole 14 on the drainage tube body 1.
[0052] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A kink-resistant drainage tube, characterized by: The device includes a drainage tube body (1), one end of which is provided with a connector seat (2). The connector seat (2) is provided with a bending control line (3) and a clamping structure (4) for clamping and fixing the bent control line (3). A plastic inner tube (5) is provided on the inner wall of the end of the drainage tube body (1) away from the connector seat (2). An avoidance groove (51) is provided on the plastic inner tube (5). The avoidance groove (51) is correspondingly provided with a drainage hole (14) on the drainage tube body (1). A wire hole (13) for passing through the bending control line (3) is provided on the end of the drainage tube body (1) away from the connector seat (2).
2. A kink-resistant drainage tube according to claim 1, wherein: The inner wall of the drainage tube body (1) is provided with a groove, and the plastic inner tube (5) is embedded in the groove, and the inner diameter of the plastic inner tube (5) is the same as the inner diameter of the drainage tube body (1).
3. A kink-resistant drainage tube according to claim 2, wherein: The shaped inner tube (5) is provided with a plurality of first cutting grooves (52), the plurality of first cutting grooves (52) are spaced apart along the axial direction of the shaped inner tube (5), and a second cutting groove (53) is provided between two adjacent first cutting grooves (52). The first cutting grooves (52) and the second cutting grooves (53) are respectively located on opposite sides of the outer wall of the shaped inner tube (5).
4. A kink-resistant drainage tube according to claim 3, wherein: The outer walls at both ends of the shaped inner tube (5) are provided with a third cutting groove (54). There are several third cutting grooves (54), and the several third cutting grooves (54) are evenly distributed along the periphery of the shaped inner tube (5). The inner wall of the groove is provided with a locking block, and the locking block is fitted and cooperates with the third cutting groove (54).
5. The kink-resistant drainage tube of claim 1, wherein: The clamping structure (4) includes an elastic buckle (41) disposed on the connector seat (2) and a handle (42) disposed on the elastic buckle (41). The side wall of the elastic buckle (41) is provided with a clamping notch (43). The connector seat (2) is provided with an annular groove (21). The elastic buckle (41) is embedded in the annular groove (21) through the clamping notch (43). The side wall of the elastic buckle (41) is also provided with a threading hole (44) for the control bending wire (3) to pass through.
6. A kink-resistant drainage tube according to claim 5, wherein: The drainage tube body (1) is provided with an inlet channel (11) and an outlet channel (12) for passing through the control bend wire (3). One end of the control bend wire (3) passes through the inlet channel (11), the inner channel of the drainage tube body (1), the wire hole (13), the outlet channel (12) and the wire hole (44) in sequence and then connects to the other end.
7. The kink-resistant drainage tube of claim 1, wherein: A counteracting reinforcement tube (6) is provided on the inner wall at the tip of the drainage tube body (1), and one end of the counteracting reinforcement tube (6) abuts against the end face of the outer sleeve (9) of the coaxial needle (8).
8. The kink-resistant drainage tube of claim 1, wherein: The drainage tube (1) has a contrast ring (7) near its tip.