A knotless drainage system

Abstract

The application discloses a knot-free drainage system and relates to the technical field of medical tools.The knot-free drainage system comprises a drainage tube, a fixing device and a suture, a thread is formed on the outer side wall of the middle part of the drainage tube, a plurality of side holes are formed on the outer wall of one end of the drainage tube, the side holes can connect the inner cavity of the drainage tube with the inside of the drainage port, the fixing device comprises a connecting piece and a fixing piece, the connecting piece can be detachably connected to the thread part of the outer periphery of the drainage tube, the outer wall of the connecting piece is connected with the fixing piece, the suture is used for penetrating the wound and forming a closed loop with adjustable tightness, one end of the suture can be detachably connected to the outer wall of the fixing piece, the fixing piece can be bidirectionally rotated compared with the connecting piece, and one end of the suture is wound on the outer wall of the fixing piece so as to adjust the tightness of the suture at the wound. The knot-free drainage system can realize the stable fixation of the drainage tube, reduces the risk while ensuring the drainage effect.

Description

Technical Field

[0001] This invention relates to the field of medical tool technology, specifically to a knot-free drainage system. Background Technology

[0002] In the surgical field, after a surgical procedure, a drainage tube is placed before closing the surgical incision to prevent postoperative complications such as fluid accumulation, gas accumulation, bleeding, and other adverse events that could lead to secondary diseases or even life-threatening situations. After placement, the drainage tube needs to be secured to prevent inward displacement leading to organ damage or outward dislodgement causing drainage failure. Currently, the main method for securing drainage tubes is to suture a single stitch around the drainage opening, tie a knot, and then wrap the suture around the tube multiple times before tying another knot. The problem with this method is that surgeons' skill levels vary, and the tightness of the suture knot cannot be accurately controlled. If the knot at the skin is too tight, it may lead to skin ischemia and necrosis; if the knot is too loose, it will not be able to restrain the drainage opening, causing drainage fluid to leak directly from the drainage opening instead of flowing out through the drainage tube. While the knot should not be too tight, a loose knot will result in insufficient fixation of the drainage tube, leading to related risks. Summary of the Invention

[0003] The purpose of this invention is to provide a knot-free drainage system to solve the problems existing in the prior art, which can achieve stable fixation of the drainage tube, and reduce risks while ensuring drainage effect.

[0004] To achieve the above objectives, the present invention provides the following solution:

[0005] This invention provides a knot-free drainage system, including a drainage tube, a fixing device, and a suture. The drainage tube has threads on its outer side wall in the middle section, and several side holes on the outer wall of one end of the drainage tube. These side holes connect the inner cavity of the drainage tube to the inside of the drainage port. The fixing device includes a connector and a fixing member. The connector is detachably connected to the threads on the outer periphery of the drainage tube, and the fixing member is connected to the outer wall of the connector. The suture passes through the wound and forms a closed loop with adjustable tightness. One end of the suture is detachably connected to the outer wall of the fixing member. The fixing member can rotate bidirectionally relative to the connector, causing one end of the suture to wrap around the outer wall of the fixing member to adjust the tightness of the suture at the wound.

[0006] Preferably, the connector includes an annular base and two semi-rings. One side of the two semi-rings is hinged, and the other side can be snapped together to form a hollow cylinder. The inner wall of each semi-ring has multiple slots, each slot being able to engage with and lock into the thread on the outer wall of the drainage tube. One end of the annular base is fixed to the outer wall of one of the semi-rings, and the side of the annular base that contacts the semi-ring is a curved surface that can fit against the outer wall of the semi-ring. The inner bottom surface of the annular base on the side away from the semi-ring is a flat surface.

[0007] Preferably, a slot is provided in the middle of the plane, and a ring of serrations is provided on the inner wall of the annular base on the side away from the semi-ring; the fixing member is a two-way knob, one end of the sewing thread is connected to the outer wall of the two-way knob, a cylindrical protrusion is provided in the middle of one side of the two-way knob, a plug is installed on the cylindrical protrusion on the side away from the two-way knob, the plug can be inserted into and engaged in the slot, and several levers are fixed on the outer periphery of the cylindrical protrusion, the outer edge of the levers can be engaged in the serrations, and when the two-way knob is rotated, each lever can be driven to rotate bidirectionally relative to the annular base, and the sewing thread is wound around the outer wall of the two-way knob, and the outer edge of the lever is engaged with different serrations.

[0008] Preferably, the outer wall of the bidirectional knob is provided with an annular groove, and a hook is fixed on the annular groove for hooking the stitching.

[0009] Preferably, the slot is cylindrical, and the inner wall of the slot is stepped. The inner diameter of the end of the slot near the semi-ring is larger than the inner diameter of the end away from the semi-ring. The plug includes two prongs, one end of each prong is mounted on the cylindrical protrusion, and the other end of each prong extends away from the cylindrical protrusion. The end of each prong away from the cylindrical protrusion has a head end with a triangular cross-section. The two head ends can move towards or away from each other, and the head ends can be engaged in the stepped surface within the slot.

[0010] Preferably, there are three levers, and the levers are evenly arranged circumferentially around the outer wall of the cylindrical protrusion.

[0011] Preferably, the end of the lever away from the cylindrical protrusion is provided with a locking connector, the cross-section of the locking connector is an isosceles triangle, and the locking connector can fit with the serrations.

[0012] Preferably, the suture has two spaced-apart coils along its length, one of which is used to pass one end of the suture through and constrain the drainage port in a way that avoids knotting, while the other coil is used to connect and disconnect with the fastener in a knot-free manner.

[0013] The present invention achieves the following technical effects compared to the prior art:

[0014] The knot-free drainage system provided by this invention has threads on the outer wall of the middle part of the drainage tube, and several side holes on the outer wall of one end of the drainage tube. The side holes can connect the inner cavity of the drainage tube with the inside of the drainage port to achieve drainage at the wound. The fixing device includes a connector and a fixing member. The connector can be detachably connected to the threads on the outer periphery of the drainage tube, and the fixing member is connected to the outer wall of the connector. The suture is used to pass through the wound and form a closed loop with adjustable tightness. One end of the suture can be detachably connected to the outer wall of the fixing member. The drainage tube is fixed at the wound by the cooperation of the fixing member and the suture, which prevents the drainage tube from shifting during use and affecting the drainage effect. The fixing member can rotate bidirectionally relative to the connector and drive one end of the suture to wrap around the outer wall of the fixing member to adjust the tightness of the suture at the wound. It is confirmed that the tightness of the suture at the skin is appropriate, and a knot-free fixing method is achieved for both the drainage port and the drainage tube, avoiding the problem of excessive tightness or looseness and reducing the risk. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the knot-free drainage system provided by the present invention;

[0017] Figure 2 This is a schematic diagram of the drainage tube in this invention;

[0018] Figure 3 This is a schematic diagram of the connector structure in this invention;

[0019] Figure 4 yes Figure 3 The main view;

[0020] Figure 5 yes Figure 3 Side view;

[0021] Figure 6 yes Figure 3 Top view;

[0022] Figure 7 This is a schematic diagram of the structure of the fastener in this invention;

[0023] Figure 8 yes Figure 7Side view;

[0024] Figure 9 yes Figure 7 The main view;

[0025] Figure 10 This is a schematic diagram of the suture structure in this invention;

[0026] Figure 11 This is a schematic diagram of the installation of the drainage tube in this invention;

[0027] In the diagram: 100-Knotless drainage system, 1-Drainage tube, 11-Thread, 12-Side hole, 2-Connector, 21-Half ring, 22-Slot, 23-Annular base, 24-Slot, 25-Serge, 3-Fixing component, 31-Cylindrical protrusion, 32-Lever, 33-Snap connector, 34-Insertion rod, 35-Head end, 36-Annular groove, 37-Hook, 4-Thread, 41-Loop, 42-Needle, 5-Drainage port. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] The purpose of this invention is to provide a knot-free drainage system to solve the technical problem that existing drainage tubes are difficult to securely and stably fix.

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] like Figures 1-11As shown, this embodiment provides a knotless drainage system 100, including a drainage tube 1, a fixing device, and a suture 4. The drainage tube 1 has a thread 11 on its outer side wall in the middle, and several side holes 12 are formed on the outer wall of one end of the drainage tube 1. The side holes 12 can connect the inner cavity of the drainage tube 1 with the inside of the drainage port 5, realizing drainage at the wound site. The fixing device includes a connector 2 and a fixing member 3. The connector 2 is detachably connected to the thread 11 on the outer periphery of the drainage tube 1, and the fixing member 3 is connected to the outer wall of the connector 2. The suture 4 is used to pass through the wound and form an adjustable tension. The closed loop is formed, and one end of the suture 4 can be detachably connected to the outer wall of the fixation member 3. The drainage tube 1 is fixed at the wound through the cooperation of the fixation member 3 and the suture 4, so as to avoid displacement of the drainage tube 1 during use and affect the drainage effect. The fixation member 3 can rotate in both directions relative to the connecting member 2, and drive one end of the suture 4 to wrap around the outer wall of the fixation member 3 to adjust the tightness of the suture 4 at the wound. It is confirmed that the tightness of the suture 4 at the skin is appropriate, and a knot-free fixation method is achieved for both the drainage port 5 and the drainage tube 1, avoiding the problem of excessive tightness or looseness of the constraint and reducing the risk.

[0032] Specifically, the connector 2 and the fixing member 3 are detachably connected. The connector 2 includes an annular base 23 and two semi-rings 21. One side of the two semi-rings 21 is hinged, and the other side can be fastened and locked to form a hollow cylinder. The cylinder is open at both ends, allowing the two ends of the drainage tube 1 to extend out of the cylinder. The inner wall of the semi-rings 21 is provided with multiple slots 22. The threads 11 on the outer wall of the drainage tube 1 are parallel and densely distributed. Each slot 22 can cooperate with and lock the threads 11 on the outer wall of the drainage tube 1, thereby preventing the cylinder formed by the two semi-rings 21 from being too large relative to the drainage tube 1. Movement affects the fixing effect. At the same time, when the connector 2 is removed, the side where the two half rings 21 are snapped together can be opened directly, which is convenient to use. One end of the annular base 23 is fixed to the outer wall of one of the half rings 21 without affecting the snapping and engagement of the two half rings 21. The side of the annular base 23 that contacts the half ring 21 is a curved surface that can fit against the outer wall of the half ring 21 to ensure connection stability and avoid gaps between the outer edge of the annular base 23 and the outer wall of the half ring 21. The inner bottom surface of the side of the annular base 23 away from the half ring 21 is flat to facilitate the installation of the fixing part 3.

[0033] A slot 24 is provided in the middle of the plane, and a serration 25 is provided on the inner wall of the annular base 23 on the side away from the semi-ring 21; the fixing part 3 is a two-way knob, which can cooperate with the annular base 23 to achieve bidirectional rotation. The suture 4 is used to pass through the wound and form a closed loop with adjustable tightness through one of the coils 41. The other coil 41 of the suture 4 is connected to the outer wall of the two-way knob. Thus, by rotating the two-way knob in both directions, the number of turns of the suture 4 around the two-way knob can be adjusted, thereby adjusting the tightness at the wound. The adjustment is convenient. A cylindrical protrusion 31 is provided in the middle of one side of the two-way knob. On the side of the cylindrical protrusion 31 away from the two-way knob, a... It has a plug that can be inserted into and engaged in the slot 24, thereby connecting the fixing part 3 and the connecting part 2, and facilitating installation and disassembly. Several levers 32 are fixed on the outer periphery of the cylindrical protrusion 31. The outer edge of the lever 32 can be engaged on the serration 25. Through the cooperation between the serration 25 and the lever 32, the fixing part 3 can be rotated and fixed relative to the connecting part 2. When the bidirectional knob is rotated with a large external force, each lever 32 can be rotated bidirectionally relative to the annular base 23, and the thread 4 can be wound on the outer wall of the bidirectional knob. The outer edge of the lever 32 can be engaged with different serrations 25, so as to achieve precise adjustment and fixation of the tightness of the thread 4.

[0034] The outer wall of the two-way knob is provided with an annular groove 36, and a hook 37 is fixed on the annular groove 36. The hook 37 is used to hook one of the loops 41 of the sewing thread 4. At the same time, the annular groove 36 can provide space for the sewing thread 4 to wrap around, so as to prevent the wrapped sewing thread 4 from slipping off the fixing member 3.

[0035] The slot 24 is cylindrical, and its inner wall is stepped, forming an annular step surface. The inner diameter of the end of the slot 24 near the semi-ring 21 is larger than the inner diameter of the end away from the semi-ring 21, i.e., the annular step surface faces the semi-ring 21. The plug includes two prongs 34. One end of each prong is mounted on the cylindrical protrusion 31, and the other end extends away from the cylindrical protrusion 31. The two prongs 34 can be slightly deformed to facilitate installation and disassembly. The end of each prong away from the cylindrical protrusion 31 has a head end 35. The cross-section of the head end 35 is triangular, and the two head ends 35 can move towards or away from each other. The head ends 35 can be engaged in the annular step inside the slot 24, thereby connecting the plug to the slot 24. When the plug needs to be removed, the head ends 35 of the two plugs are moved towards each other and then pulled out.

[0036] There are three levers 32, and the levers 32 are evenly arranged circumferentially around the outer wall of the cylindrical protrusion 31. Those skilled in the art can make adaptive adjustments to the number of levers 32 according to actual needs.

[0037] The lever 32 has a locking connector 33 at the end away from the cylindrical protrusion 31. The cross-section of the locking connector 33 is an isosceles triangle, and the locking connector 33 can fit with the serration 25, thereby facilitating the bidirectional rotation of the bidirectional knob. At the same time, the locking connector 33 and the serration 25 can be engaged to fix the tension of the sewing thread 4 after adjustment.

[0038] Two spaced loops 41 are provided along the length of the suture 4, and one end of the suture 4 is connected to the needle 42. The loops 41 and the suture 4 are made of the same material and have the same weaving process. One loop 41 is used to pass one end of the suture 4 through and to constrain the drainage port 5 in a way that avoids knotting. The other loop 41 is used to connect and disconnect the fastener 3 in a way that avoids knotting.

[0039] During operation, firstly, a suture 4 is pre-placed at the edge of the drainage port 5. The needle 42 enters from one side of the incision in the drainage port 5 and exits from the opposite side, with two loops 41 positioned on either side of the incision. Then, the needle 42 passes through the loop 41 on the side of the needle entry point, forming an adjustable closed loop of suture 4 at the drainage port 5. At this point, the loop 41 on the side of the needle entry point initially fixes one end of the suture 4. The drainage tube 1 is then passed through the drainage port 5, and the desired length is determined. The connector 2 is removed and placed against the skin outside the drainage port 5, fitted onto the thread 11 of the drainage tube 1 and secured. Simultaneously, the bottom surface of the annular base 23 faces the suture 4. The fixing piece 3 is removed, and the head end 35 of the plug is inserted into the corresponding slot 24. The plug rod 34 slightly bends towards the center, and the locking connector 33 of the lever 32 corresponds to the serration 25, fully inserting into the fixing piece 3. The stepped design of the inner wall of the slot 24 secures the plug and prevents it from falling out. At this point, lever 32 matches the saw teeth 25, allowing for stepped bidirectional rotation under significant external force. Cut the needle 42 of the suture 4 and loop the loop 41 on the side of the suture 4 where the needle exits onto hook 37. Start rotating the knob clockwise or counterclockwise to make the suture 4 loop within the annular groove 36 until the suture 4 is fully tightened and both ends of the suture 4 are secured. Confirm that the tightness of the suture 4 at the skin is appropriate, thus completing the fixation of the drainage tube 1.

[0040] This specification uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A knot-free drainage system, characterized in that: The device includes a drainage tube, a fixation device, and sutures. The drainage tube has threads on its outer side wall in the middle section, and several side holes on the outer wall of one end of the drainage tube. The side holes can connect the inner cavity of the drainage tube with the inside of the drainage port. The fixation device includes a connector and a fixator. The connector can be detachably connected to the threads on the outer periphery of the drainage tube, and the fixator is connected to the outer wall of the connector. The sutures are used to pass through the wound and form a closed loop with adjustable tightness. One end of the sutures can be detachably connected to the outer wall of the fixator. The fixator can rotate bidirectionally relative to the connector, and drive one end of the sutures to wrap around the outer wall of the fixator to adjust the tightness of the sutures at the wound. The connector includes an annular base and two semi-rings. One side of the two semi-rings is hinged, and the other side can be snapped together to form a hollow cylinder. The inner wall of the semi-rings is provided with multiple slots, each of which can engage with the thread on the outer wall of the drainage tube and be locked. One end of the annular base is fixed to the outer wall of one of the semi-rings, and the side of the annular base that contacts the semi-ring is a curved surface that can fit against the outer wall of the semi-ring. The inner bottom surface of the annular base on the side away from the semi-ring is a plane. A slot is provided in the middle of the plane, and a ring of serrations is provided on the inner wall of the annular base on the side away from the semi-ring. The fixing member is a two-way knob. One end of the sewing thread is connected to the outer wall of the two-way knob. A cylindrical protrusion is provided in the middle of one side of the two-way knob. Several levers are fixed on the outer periphery of the cylindrical protrusion. The outer edge of the lever can be locked on the serrations. When the two-way knob is rotated, it can drive each lever to rotate bidirectionally relative to the annular base, and cause the sewing thread to wrap around the outer wall of the two-way knob, and cause the outer edge of the lever to engage with different serrations. A locking head is provided on the end of the lever away from the cylindrical protrusion. The cross-section of the locking head is an isosceles triangle, and the locking head can fit with the serrations. The suture has two spaced coils along its length. One coil is used to pass one end of the suture through and constrain the drainage port in a way that avoids knotting. The other coil is used to connect and disconnect the suture from the fastener in a knot-free manner.

2. The knot-free drainage system according to claim 1, characterized in that: A plug is installed on the side of the cylindrical protrusion away from the bidirectional knob, and the plug can be inserted into and engaged in the slot.

3. The knot-free drainage system according to claim 2, characterized in that: The outer wall of the two-way knob is provided with an annular groove, and a hook is fixed on the annular groove for hooking the stitching.

4. The knot-free drainage system according to claim 2, characterized in that: The slot is cylindrical, and the inner wall of the slot is stepped. The inner diameter of the end of the slot near the semi-ring is larger than the inner diameter of the end away from the semi-ring. The plug includes two prongs, one end of each prong is mounted on the cylindrical protrusion, and the other end of each prong extends away from the cylindrical protrusion. The end of each prong away from the cylindrical protrusion has a head end with a triangular cross-section. The two head ends can move towards or away from each other and can be engaged in the stepped surface within the slot.

5. The knot-free drainage system according to claim 2, characterized in that: There are three levers, and the levers are evenly arranged circumferentially around the outer wall of the cylindrical protrusion.

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