Drainage fixator and use method

Abstract

The invention discloses a drainage fixator, and particularly relates to the technical field of medical instruments, the drainage fixator comprises a drainage tube and a fixing plate, the fixing plate is provided with a fixing structure, and the fixing plate is provided with a first tube penetrating hole for the drainage tube to freely pass through; the mounting bin is arranged on one surface of the fixing plate in the thickness direction and is hollow; the straightening sleeve is arranged in the mounting bin in a penetrating manner and can freely slide, and the drainage tube freely penetrates out of the straightening sleeve; and the driving structure is used for driving the straightening sleeve to move on the drainage tube in the direction away from the mounting bin. The straightening sleeve slides on the drainage tube, inertia generated during sliding of the straightening sleeve drives the straightening sleeve to straighten the bent portion of the drainage tube, bending of the drainage tube is reduced, effusion can smoothly flow into a drainage bag in the drainage tube, a driving structure is additionally arranged to drive the straightening sleeve, manual operation is not needed, and the drainage tube is convenient to use. And the medical efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and more specifically, to a drainage fixator and a use method thereof. Background Art

[0002] Neurosurgery is a department that treats diseases of the brain, spinal cord and other nervous systems caused by trauma, such as life-threatening cerebral hemorrhage, brain trauma caused by a car accident, or brain tumor compression requiring surgical treatment. After the operation, medical staff need to perform drainage treatment on the patient's surgical site to discharge the fluid in the patient's surgical site to the outside world.

[0003] At present, when draining the accumulated fluid in the surgical site of the patient, a drainage tube is mainly inserted into the surgical site to allow the accumulated fluid to flow out along the drainage tube. One end of the drainage tube is generally adhered to the skin by a bandage or tape, and the other end is hung down and inserted into a drainage bag to achieve drainage. When the patient's body moves, the drainage tube may bend. The bent drainage tube will cause the flow of the accumulated fluid to decrease. However, when the bending angle is close to or greater than 90 degrees, the accumulated fluid may not be able to flow out along the drainage tube, affecting the drainage operation. Medical staff cannot be with the patient all the time to operate the drainage, which makes it impossible for the medical staff to detect the bending of the drainage tube in time, thereby slowing down the drainage operation and reducing the operation efficiency. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a drainage fixer and a method of use. The technical problem to be solved by the present invention is that when the bending angle of the drainage tube in the prior art is close to or greater than 90 degrees, the accumulated fluid cannot be discharged.

[0005] To achieve the above object, the present invention provides the following technical solution: a drainage fixer, comprising a drainage tube, and further comprising:

[0006] A fixing plate, wherein a fixing structure is provided on the fixing plate, and a first tube-penetrating hole is provided on the fixing plate for the drainage tube to freely pass through;

[0007] An installation bin is provided on one side of the fixing plate in the thickness direction, and the interior of the installation bin is hollow;

[0008] A straightening sleeve which is passed through the installation chamber and can slide freely, and the drainage tube can freely pass through the straightening sleeve;

[0009] A driving structure is used for driving the straightening sleeve to move on the drainage tube in a direction away from the installation bin.

[0010] Furthermore, the fixing structure includes elastic bands fixed to opposite ends of the fixing plate, and the ends of the two elastic bands away from the fixing plate are detachably connected by Velcro.

[0011] Furthermore, the fixing plate is made of rubber material.

[0012] Furthermore, the driving structure comprises:

[0013] A stopping unit for limiting the position of the straightening sleeve on the mounting bin;

[0014] An elastic abutting unit for driving the straightening sleeve to move in a direction away from the installation bin;

[0015] A trigger unit is used to trigger the stop unit to move, thereby causing the elastic abutting unit to drive the straightening sleeve to move on the drainage tube in a direction away from the installation chamber.

[0016] Furthermore, the elastic abutment unit comprises:

[0017] An annular protrusion is provided on one end of the straightening sleeve passing through the installation bin, and the outer diameter of the annular protrusion is larger than the outer diameter of the straightening sleeve;

[0018] A first spring is wound around the straightening sleeve and has two ends in the elastic force direction elastically pressing against the annular protrusion and the mounting bin respectively.

[0019] Furthermore, the stopping unit comprises:

[0020] A mounting seat fixedly connected to the inner wall of the mounting bin, wherein the interior of the mounting seat is hollow;

[0021] A sliding block engaged in the inner cavity of the mounting seat and capable of sliding freely horizontally;

[0022] A stop pin coaxially fixed to the sliding block, the stop pin can slide freely on the mounting bin, one end of the alignment sleeve inserted into the mounting bin is coaxially provided with an annular groove, and one end of the stop pin passing through the mounting seat is inserted into the annular groove;

[0023] An electromagnet fixedly connected to the mouth of the mounting seat, the electromagnet being used in conjunction with the sliding block;

[0024] A second spring is horizontally mounted in the inner cavity of the mounting seat, and two ends of the second spring in the elastic force direction elastically press against the electromagnet and the sliding block respectively.

[0025] Furthermore, the trigger unit includes:

[0026] A sealing seat fixedly connected to the surface of the fixing plate and located in the installation chamber, wherein the sealing seat is hollow inside and is provided with a second pipe-through hole for the drainage tube to freely pass through, and a connecting port is provided at the position where the drainage tube passes through the sealing seat, and the connecting port is connected with the interior of the drainage tube;

[0027] A piston plate sleeved on one end of the drainage tube that penetrates into the sealing seat, the piston plate is engaged in the sealing seat and can slide freely, and the piston plate divides the interior of the sealing seat into a buffer cavity and an installation cavity in sequence, and the buffer cavity is connected to the communication port;

[0028] A third spring is arranged in the installation cavity, and two ends of the third spring in the elastic force direction elastically press against the piston plate and the inner wall of the installation cavity respectively;

[0029] Two conductive sheets fixedly connected to an end surface of the piston plate facing away from the buffer cavity;

[0030] The conductive pillars are arranged in groups of two through the sealing seat, and the two groups of conductive pillars are respectively defined as a first conductive pillar and a second conductive pillar. One end of the two first conductive pillars inserted into the installation cavity corresponds to one end of the two conductive sheets respectively, and one end of the two second conductive pillars inserted into the installation cavity corresponds to the other end of the two conductive sheets respectively. The two power lines of the electromagnet are electrically connected to the two first conductive pillars respectively.

[0031] Furthermore, a plurality of balls are rotatably embedded in the inner hole wall of the straightening sleeve, and the balls are in rolling contact with the wall of the drainage tube.

[0032] Furthermore, an annular flange is coaxially fixed in the inner cavity of the sealing seat, and the annular flange is used to limit the movement of the piston plate toward the cache cavity.

[0033] A method for using a drainage fixator, comprising:

[0034] The fixing plate is attached to the skin surface of the surgical site on the patient's head, and then the drainage tube is inserted into the surgical site of the patient through one end of the fixing plate, and then the two elastic bands are passed around the patient's head, and the ends of the two elastic bands are bonded with Velcro, so as to fix the fixing plate on the patient's head, and the end of the drainage tube away from the fixing plate is inserted into the drainage bag, so as to drain the accumulated fluid in the surgical site of the patient;

[0035] When the patient's body moves and causes the drainage tube to bend, and the bending angle is greater than or close to 90 degrees, the accumulated fluid in the drainage tube cannot flow into the drainage bag from the bending part, so the accumulated fluid will quickly flow into the buffer cavity from the connecting port of the drainage tube, thereby increasing the pressure of the accumulated fluid in the buffer cavity, pushing the piston plate to move toward the mounting cavity, and at the same time causing the piston plate to compress the third spring;

[0036] When the piston plate moves, the two ends of the two conductive sheets are in contact with the first conductive column and the second conductive column respectively, and the positive and negative poles of the external battery are electrically connected to the two second conductive columns respectively. At this time, the positive and negative poles of the battery will form a path with the first conductive column, the conductive sheet, the second conductive column and the positive and negative poles of the electromagnet, so that the battery can supply power to the electromagnet. After the electromagnet is energized, magnetism is generated, and then a magnetic attraction force is generated on the sliding block, so that the sliding block drives the stop pin to move toward the inner side of the mounting seat, thereby causing the stop pin to be out of the engagement state with the annular groove, and at the same time, the sliding block compresses the second spring;

[0037] After the stop pin is disengaged from the engagement state with the annular groove, the first spring is rapidly converted from a compressed state to an extended state, thereby driving the straightening sleeve to be mounted on the drainage tube and move rapidly in a direction away from the installation bin. Under the action of inertia, the straightening sleeve is sleeved on the bent portion of the drainage tube, and the impact force generated on the drainage tube when moving by inertia causes the bent portion of the drainage tube to be straightened by the straightening sleeve, thereby allowing the accumulated fluid in the drainage tube to flow into the drainage bag.

[0038] Technical effects and advantages of the present invention:

[0039] The straightening sleeve is slid on the drainage tube, and the inertia generated by the sliding of the straightening sleeve is used to drive the straightening sleeve to straighten the bent part of the drainage tube, thereby reducing the bending of the drainage tube, so that the accumulated fluid can flow smoothly into the drainage bag in the drainage tube. In addition, a driving structure is provided to drive the straightening sleeve, and manual operation is not required, thereby improving medical efficiency.

[0040] By setting the driving structure to consist of an elastic abutting unit, a stopping unit and a triggering unit, the elastic abutting unit can accumulate elastic potential energy in the initial state. When the drainage tube is bent at an excessively large angle so that the accumulated fluid cannot flow smoothly into the drainage bag, the accumulated fluid in the drainage tube cannot flow, causing the triggering unit to actuate, thereby driving the stopping unit to actuate. After the stopping unit actuates, the stopping effect on the straightening sleeve fails, thereby allowing the elastic potential energy accumulated by the elastic abutting unit to be released, and driving the straightening sleeve to move quickly on the drainage tube. The entire process realizes automated operation.

[0041] By setting a connecting port on the drainage tube, when the bending angle of the drainage tube is too large and the accumulated liquid cannot flow, the accumulated liquid will flow into the cache cavity of the sealing seat from the connecting port, and as the accumulated liquid increases, the thrust of the accumulated liquid on the piston plate increases, so that the piston plate overcomes the elastic resisting force of the third spring, and then the piston plate moves away from the cache cavity, so that the conductive sheet contacts the first conductive column and the second conductive column, so that the battery can power the electromagnet, and the electromagnet generates magnetism after being energized, thereby driving the stop pin to disengage from the engagement state with the annular groove, so that the straightening sleeve is out of contact with the stop pin. The whole process is based on the change in the pressure of the accumulated liquid after the drainage tube is bent to move the piston plate, and then the battery powers the electromagnet, so that the flow state of the accumulated liquid in the drainage tube automatically triggers the movement of the straightening sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a structural schematic diagram of a drainage fixer in the present invention;

[0043] Figure 2 for Figure 1 A schematic cross-sectional view of the middle structure;

[0044] Figure 3 for Figure 2 A magnified schematic diagram of the local structure at point A;

[0045] Figure 4 It is a schematic diagram of the structure after the fixing plate and the elastic belt are assembled in the present invention;

[0046] Figure 5 for Figure 4 A schematic cross-sectional view of the structure;

[0047] Figure 6 It is a schematic diagram of the assembly structure of the piston plate and the conductive sheet in the present invention;

[0048] Figure 7 It is a structural schematic diagram of the straightening sleeve in the present invention;

[0049] Figure 8 It is a schematic diagram of the structure after the mounting seat, the stop pin and the electromagnet are assembled in the present invention;

[0050] Fig. 9 for Figure 8 Schematic cross-sectional view of the structure.

[0051] The accompanying drawings are marked as follows: 1-elastic band, 2-drainage tube, 3-fixing plate, 4-first spring, 5-annular protrusion, 6-mounting chamber, 7-straightening sleeve, 8-first conductive column, 9-second conductive column, 10-annular flange, 11-connecting port, 12-buffer chamber, 13-piston plate, 14-mounting chamber, 15-annular groove, 16-sealing seat, 17-conductive sheet, 18-ball, 19-groove, 20-electromagnet, 21-sliding block, 22-stop pin, 23-second spring, 24-mounting seat. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0053] like Figure 1-Figure 9As shown, the present invention provides: a drainage fixer, comprising a drainage tube 2 and a fixing plate 3, the fixing plate 3 is made of rubber material, so that the fixing plate 3 has a certain degree of extension and elastic deformation ability, in addition, the fixing plate 3 is provided with a first tube-through hole for the drainage tube 2 to pass freely, and elastic bands 1 are sewn at opposite ends of the fixing plate 3, and the ends of the two elastic bands 1 away from the fixing plate 3 are detachably connected by Velcro, a cylindrical mounting chamber 6 is bonded to one side in the thickness direction of the fixing plate 3, the mounting chamber 6 is hollow inside, and a straightening sleeve 7 that can slide freely is passed through the mounting chamber 6, the drainage tube 2 freely passes through the straightening sleeve 7, and an end of the straightening sleeve 7 passing through the mounting chamber 6 is provided with an outward-turned annular protrusion 5, and the outer diameter of the annular protrusion 5 is greater than the outer diameter of the straightening sleeve 7, and the straightening sleeve 7 is put on A first spring 4 is wound around which both ends in the elastic direction elastically press against the annular protrusion 5 and the mounting bin 6 respectively. In the initial state, the first spring 4 is in a compressed state. At this time, the first spring 4 accumulates elastic potential energy. In addition, a through groove 19 is coaxially provided on the straightening sleeve 7. A plurality of balls 18 are rotatably embedded in the inner wall of the through groove 19. The balls 18 are in rolling contact with the wall of the drainage tube 2, so that the resistance of the straightening sleeve 7 when sliding on the drainage tube 2 is small. An internal hollow mounting seat 24 is screwed to the inner wall of the mounting bin 6 away from the fixed plate 3. A sliding block 21 that can slide freely horizontally is engaged in the inner cavity of the mounting seat 24. The sliding block 21 is made of magnetic material. A stop pin 22 is coaxially welded on the sliding block 21. The stop pin 22 can slide freely on the mounting bin 6. An annular groove 15 is coaxially provided at one end of the mounting chamber 6, and one end of the stop pin 22 passes through the mounting seat 24 and is inserted into the annular groove 15. An electromagnet 20 is welded at the mouth of the mounting seat 24, and the electromagnet 20 is used in conjunction with the sliding block 21. Specifically, when the electromagnet 20 is energized to generate magnetism, it will generate magnetic attraction on the sliding block 21, so that the sliding block 21 moves quickly in the direction of the electromagnet 20. In addition, a second spring 23 is horizontally installed in the inner cavity of the mounting seat 24, and the two ends of the second spring 23 in the elastic force direction elastically resist the electromagnet 20 and the sliding block 21 respectively, and an elastic resisting force is generated on the sliding block 21 through the second spring 23. In the initial state, the second spring 23 is in a compressed state, so that the second spring 23 has a pre-compression on the sliding block 21. The electromagnet 20 is in a power-off state at this time. When the electromagnet 20 is energized, it will generate magnetism and drive the sliding block 21 to move quickly in the direction of the electromagnet 20, thereby driving the stop pin 22 to disengage from the engagement state with the annular groove 15. At this time, the straightening sleeve 7 loses the limiting effect of the stop pin 22. Under the elastic resisting force of the first spring 4 on the annular protrusion 5, the straightening sleeve 7 will be driven to move quickly in the direction away from the installation bin 6, so that the straightening bar 7 slides on the drainage tube 2. When sliding, the straightening sleeve 7 has a certain inertia. Under the action of inertia, the straightening sleeve 7 can squeeze the bent part of the drainage tube 2, thereby forcibly straightening the drainage tube 2, so that the bending angle of the drainage tube 2 is reduced, so that the accumulated fluid in the drainage tube 2 can flow into the drainage bag;

[0054] Since the power on and off of the electromagnet 20 needs to be automatically controlled to reduce the manual operation of medical personnel, in this embodiment, a cylindrical sealing seat 16 is bonded to the surface of the fixed plate 3 or integrally formed with the fixed plate 3. The interior of the sealing seat 16 is hollow, and the sealing seat 16 is provided with a second through-tube hole for the drainage tube 2 to pass freely. A connecting port 11 is provided at the portion where the drainage tube 2 penetrates into the sealing seat 16. The connecting port 11 is connected to the interior of the drainage tube 2. One end of the drainage tube 2 penetrates into the sealing seat 16 is sleeved with a piston plate 13. The piston plate 13 is engaged in the sealing seat 16 and can slide freely. The plate 13 divides the interior of the sealing seat 16 into a cache chamber 12 and an installation chamber 14 in sequence. The cache chamber 12 is connected to the connecting port 11. In addition, the piston plate 13 is preferably made of silicone material, so that the sealing effect of the connection between the drainage tube 2 and the piston plate 13 can be improved. A third spring is installed in the installation chamber 14, and the two ends of the third spring elastic force direction elastically press against the piston plate 13 and the inner wall of the installation chamber 14 respectively. Two conductive sheets 17 are bonded to the end surface of the piston plate 13 facing away from the cache chamber 12. The two conductive sheets 17 are arranged in an axial array along the piston plate 13. Two conductive columns are respectively penetrated on the opposite sides of the radial direction of the sealing seat 16, and the adjacent two conductive columns are respectively penetrated. The conductive columns are grouped into one group, and the two groups of conductive columns are defined as the first conductive column 8 and the second conductive column 9, respectively. The ends of the two first conductive columns 8 that penetrate into the installation cavity 14 correspond to the ends of the two conductive sheets 17, respectively. The ends of the two second conductive columns 9 that penetrate into the installation cavity 14 correspond to the other ends of the two conductive sheets 17, respectively. The two power lines of the electromagnet 20 are electrically connected to the two first conductive columns 8, respectively. A battery is provided in the installation compartment 6, and the positive and negative electrodes of the battery are electrically connected to the two second conductive columns 9 through cables, respectively. When the piston plate 13 moves in the direction away from the cache cavity 12, the arc length of the conductive sheet 17 will be made The two ends of the direction are respectively in contact with the first conductive column 8 and the second conductive column 9. At this time, the first conductive column 8 and the second conductive column 9 in contact with the same conductive sheet 17 are in an electrically connected state, so that the positive and negative poles of the battery are respectively electrically connected to the positive and negative poles of the electromagnet 20, so that the battery can supply power to the electromagnet 20. In addition, in order to prevent the piston plate 13 from blocking the connecting port 11, an annular flange 10 is coaxially fixed in the inner cavity of the sealing seat 16. The annular flange 10 is used to limit the movement of the piston plate 13 toward the cache cavity 12, so that the annular flange 10 will not close the connecting port 11.

[0055] Working principle of the present invention:

[0056] The fixing plate 3 is attached to the skin surface of the surgical site on the patient's head, and then the drainage tube 2 is inserted into the surgical site of the patient through one end of the fixing plate 3, and then the two elastic bands 1 are passed around the patient's head, and the ends of the two elastic bands 1 are bonded with Velcro, and then the fixing plate 3 is fixed to the patient's head, and the end of the drainage tube 2 away from the fixing plate 3 is inserted into the drainage bag, so as to drain the effusion in the surgical site of the patient;

[0057] When the patient's body moves and causes the drainage tube 2 to bend, and the bending angle is greater than or close to 90 degrees, the accumulated fluid in the drainage tube 2 cannot flow into the drainage bag from the bending part, so the accumulated fluid will quickly flow into the buffer chamber 12 from the connecting port 11 of the drainage tube 2, thereby increasing the pressure of the accumulated fluid in the buffer chamber 12, and pushing the piston plate 13 to move toward the mounting chamber 14, and at the same time causing the piston plate 13 to compress the third spring;

[0058] When the piston plate 13 moves, the two ends of the two conductive sheets 17 are in contact with the first conductive column 8 and the second conductive column 9 respectively, and the positive and negative electrodes of the external battery are electrically connected to the two second conductive columns 9 respectively. At this time, the positive and negative electrodes of the battery will form a path with the positive and negative electrodes of the first conductive column 8, the conductive sheet 17, the second conductive column 9 and the electromagnet 20, so that the battery can supply power to the electromagnet 20. After the electromagnet 20 is energized, it generates magnetism, and then generates a magnetic attraction force on the sliding block 21, so that the sliding block 21 drives the stop pin 22 to move toward the inner side of the mounting seat 24, so that the stop pin 22 is out of the engagement state with the annular groove 15, and at the same time, the sliding block 21 compresses the second spring 23;

[0059] After the stop pin 22 is disengaged from the engagement state with the annular groove 15, the first spring 4 is rapidly changed from a compressed state to an extended state, thereby driving the straightening sleeve 7 on the drainage tube 2 to move quickly in a direction away from the installation bin 6. Under the action of inertia, the straightening sleeve 7 will be sleeved on the bending part of the drainage tube 2, and the impact force generated on the drainage tube 2 when moving by inertia causes the bending part of the drainage tube 2 to be straightened by the straightening sleeve 7, thereby allowing the accumulated fluid in the drainage tube 2 to flow into the drainage bag.

[0060] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0061] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0062] Finally: The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A drainage fixture, comprising a drainage tube (2), characterized in that: Also includes: A fixing plate (3), wherein a fixing structure is provided on the fixing plate (3), and the fixing plate (3) is provided with a first tube-penetrating hole for the drainage tube (2) to freely pass through; An installation bin (6) is provided on one side of the fixing plate (3) in the thickness direction, and the interior of the installation bin (6) is hollow; A straightening sleeve (7) which is inserted into the installation bin (6) and can slide freely, and the drainage tube (2) can freely pass through the straightening sleeve (7); A driving structure for driving the straightening sleeve (7) to move on the drainage tube (2) in a direction away from the installation bin (6).

2. A drainage fixator according to claim 1, characterized in that: The fixing structure comprises elastic bands (1) fixed to opposite ends of the fixing plate (3), and the ends of the two elastic bands (1) away from the fixing plate (3) are detachably connected via Velcro.

3. A drainage fixator according to claim 2, characterized in that: The fixing plate (3) is made of rubber material.

4. A drainage fixator according to claim 3, characterized in that: The driving structure comprises: A stopping unit for limiting the position of the straightening sleeve (7) on the mounting bin (6); an elastic abutting unit for driving the straightening sleeve (7) to move in a direction away from the installation bin (6); A trigger unit for causing the stop unit to trigger an action, thereby causing the elastic abutment unit to drive the straightening sleeve (7) on the drainage tube (2) to move in a direction away from the installation chamber (6).

5. A drainage fixator according to claim 4, characterized in that: The elastic abutment unit comprises: an annular protrusion (5) provided on one end of the straightening sleeve (7) passing through the installation bin (6), the outer diameter of the annular protrusion (5) being greater than the outer diameter of the straightening sleeve (7); A first spring (4) is wound around the straightening sleeve (7) and elastically presses against the annular protrusion (5) and the installation chamber (6) at both ends in the elastic force direction.

6. A drainage fixator according to claim 5, characterized in that: The stopping unit comprises: A mounting seat (24) fixedly connected to the inner wall of the mounting bin (6), wherein the interior of the mounting seat (24) is hollow; A sliding block (21) engaged in the inner cavity of the mounting seat (24) and capable of sliding freely horizontally; A stop pin (22) coaxially fixed to the sliding block (21), the stop pin (22) being able to slide freely on the mounting chamber (6), an annular groove (15) being coaxially formed on one end of the alignment sleeve (7) that penetrates into the mounting chamber (6), and an end of the stop pin (22) that penetrates out of the mounting seat (24) being inserted into the annular groove (15); An electromagnet (20) fixedly connected to the mouth of the mounting seat (24), the electromagnet (20) being used in conjunction with the sliding block (21); A second spring (23) is horizontally mounted in the inner cavity of the mounting seat (24), and two ends of the second spring (23) in the elastic force direction elastically press against the electromagnet (20) and the sliding block (21) respectively.

7. A drainage fixator according to claim 6, characterized in that: The trigger unit comprises: a sealing seat (16) fixedly connected to the surface of the fixing plate (3) and located in the installation chamber (6); the sealing seat (16) is hollow inside and is provided with a second pipe-through hole for the drainage pipe (2) to freely pass through; a connecting port (11) is provided at a portion where the drainage pipe (2) passes through the sealing seat (16); the connecting port (11) is connected to the interior of the drainage pipe (2); a piston plate (13) sleeved on one end of the drainage tube (2) penetrating into the sealing seat (16); the piston plate (13) is engaged in the sealing seat (16) and can slide freely; the piston plate (13) divides the interior of the sealing seat (16) into a buffer chamber (12) and an installation chamber (14) in sequence; the buffer chamber (12) is connected to the communication port (11); A third spring is arranged in the installation cavity (14), and two ends of the third spring in the elastic force direction elastically press against the piston plate (13) and the inner wall of the installation cavity (14) respectively; Two conductive sheets (17) fixedly connected to an end surface of the piston plate (13) facing away from the buffer chamber (12); Conductive columns are arranged in groups of two through the sealing seat (16), and the two groups of conductive columns are defined as a first conductive column (8) and a second conductive column (9), respectively. One end of the two first conductive columns (8) inserted into the installation cavity (14) corresponds to one end of the two conductive sheets (17), and one end of the two second conductive columns (9) inserted into the installation cavity (14) corresponds to the other end of the two conductive sheets (17), and the two power lines of the electromagnet (20) are electrically connected to the two first conductive columns (8) respectively.

8. A drainage fixator according to claim 7, characterized in that: A plurality of balls (18) are rotatably embedded in the inner hole wall of the straightening sleeve (7), and the balls (18) are in rolling contact with the wall of the drainage tube (2).

9. The drainage fixator according to claim 8, characterized in that: An annular flange (10) is coaxially fixedly connected in the inner cavity of the sealing seat (16), and the annular flange (10) is used to limit the movement of the piston plate (13) towards the buffer cavity (12).

10. The method for using the drainage fixator according to claim 9, characterized in that: include: The fixing plate (3) is attached to the skin surface of the surgical site on the patient's head, and then one end of the drainage tube (2) is inserted into the surgical site of the patient after passing through the fixing plate (3). Then, the two elastic bands (1) are passed around the patient's head, and the ends of the two elastic bands (1) are bonded together using Velcro, thereby fixing the fixing plate (3) on the patient's head, and the end of the drainage tube (2) away from the fixing plate (3) is inserted into the drainage bag, thereby draining the accumulated fluid in the surgical site of the patient; When the patient's body moves and causes the drainage tube (2) to bend, and the bending angle is greater than or close to 90 degrees, the accumulated fluid in the drainage tube (2) cannot flow into the drainage bag from the bending position, so the accumulated fluid will quickly flow into the buffer chamber (12) from the connecting port (11) of the drainage tube (2), thereby increasing the pressure of the accumulated fluid in the buffer chamber (12), pushing the piston plate (13) to move in the direction of the mounting chamber (14), and at the same time causing the piston plate (13) to compress the third spring; When the piston plate (13) moves, the two ends of the two conductive sheets (17) are respectively in contact with the first conductive column (8) and the second conductive column (9), and the positive and negative electrodes of the external storage battery are respectively electrically connected to the two second conductive columns (9). At this time, the positive and negative electrodes of the storage battery will form a path with the positive and negative electrodes of the first conductive column (8), the conductive sheet (17), the second conductive column (9) and the electromagnet (20), so that the storage battery can supply power to the electromagnet (20). After the electromagnet (20) is energized, magnetism is generated, thereby generating a magnetic attraction force on the sliding block (21), so that the sliding block (21) drives the stop pin (22) to move toward the inner side of the mounting seat (24), thereby causing the stop pin (22) to be out of the engagement state with the annular groove (15), and at the same time, the sliding block (21) compresses the second spring (23); After the stop pin (22) is disengaged from the engagement state with the annular groove (15), the first spring (4) is rapidly changed from a compressed state to an extended state, thereby driving the straightening sleeve (7) on the drainage tube (2) to move rapidly in a direction away from the installation bin (6). Under the action of inertia, the straightening sleeve (7) is sleeved on the bent portion of the drainage tube (2), and the impact force generated on the drainage tube (2) during the inertial movement causes the bent portion of the drainage tube (2) to be straightened by the straightening sleeve (7), thereby allowing the accumulated fluid in the drainage tube (2) to flow into the drainage bag.

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