Drainage device capable of preventing hematocele

Abstract

The invention discloses an anti-hematocele drainage device and relates to the technical field of medical instruments, the anti-hematocele drainage device comprises a drainage tube and a storage cavity, one end of the drainage tube is communicated with the storage cavity, the other end of the drainage tube is provided with a drainage hole, the storage cavity is communicated with negative pressure equipment, and the end, close to the drainage hole, of the outer wall of the drainage tube is sleeved with a heat preservation sleeve; the outer side of the end, close to the storage cavity, of the drainage tube is sleeved with a cleaning mechanism, the cleaning mechanism comprises two sets of symmetrically-arranged positioning frames, pressing wheels are slidably arranged in the positioning frames, first sliding grooves and second sliding grooves which are slidably connected with the pressing wheels are formed in the positioning frames in parallel, and the two ends of the first sliding grooves and the two ends of the second sliding grooves communicate with each other; the first sliding grooves face the drainage tube, and the pressing wheels, located in the first sliding grooves, in the two sets of positioning frames extrude the drainage tube until the drainage tube deforms. Through the integrated design of heat preservation and constant temperature, automatic pressing wheel cleaning and flow speed detection, the beneficial effects of continuous smooth drainage, manual intervention reduction and blockage risk reduction are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to a blood accumulation prevention and drainage device. Background Art

[0002] In existing postoperative body cavity drainage systems, drainage tubes are typically made of medical silicone or polyurethane and rely on mechanical fixation and negative pressure devices to continuously absorb wound exudate. However, since the fluid in the drainage tube quickly loses temperature after leaving the body, blood or exudate easily forms clots in the tube lumen and adheres to the tube wall, resulting in poor circulation or even complete blockage. Traditional solutions mainly rely on medical staff to manually squeeze the drainage tube or re-flushing it.

[0003] However, in the existing technology, clinical nursing staff are limited, and it is impossible for medical staff to continuously monitor the patient's drainage situation. They can usually only patrol and manually check once or twice a day. When blood clots are generated in the drainage tube during the suction process, if they are not discovered and cleaned in time, these blood clots will stay in the tube lumen for several hours or even more than ten hours. Over time, the fibrin in the blood clots gradually solidifies and adheres tightly to the tube wall, and its adhesion strength is significantly enhanced, resulting in a decrease in the subsequent negative pressure suction effect, a slower drainage speed, and even partial or complete blockage of the drainage tube. If poor drainage or tube blockage is not handled in time, it will directly affect the timely discharge of postoperative exudate. The retention of exudate in the body cavity can aggravate tissue compression, delay wound healing, and provide a breeding ground for bacteria to reproduce, which can easily cause infection or abscess. At the same time, the continuous high negative pressure effect may also cause traction damage to the surrounding tissues, causing pain and the risk of tissue necrosis. Long-term undischarged effusion will also lead to an aggravation of local inflammatory response, thereby endangering the patient's overall recovery process and postoperative quality of life. Summary of the Invention

[0004] In view of the above existing problems, the present invention is proposed.

[0005] The purpose of the present invention is to solve the problem in the prior art that postoperative drainage devices are blocked due to the inability of medical staff to monitor and clear blood accumulation in real time.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] On the one hand, the present invention provides an anti-blood accumulation drainage device, which includes a drainage tube and a storage chamber, one end of the drainage tube is connected to the storage chamber and the other end is provided with a drainage hole, the storage chamber is connected to the negative pressure device, the outer wall of the drainage tube is provided with an insulation sleeve at one end near the drainage hole, and the drainage tube is provided with a cleaning mechanism on the outer side of one end near the storage chamber, the cleaning mechanism includes two groups of symmetrically arranged positioning frames, the positioning frames are provided with a pressure wheel for sliding inside, the positioning frames are provided with a first slide groove and a second slide groove parallel to the positioning frames and connected to the pressure wheel for sliding, the first slide groove and the second slide groove are connected to each other at both ends, the first slide groove is arranged towards the drainage tube, the pressure wheels located in the first slide groove of the two groups of positioning frames squeeze the drainage tube until it is deformed, and the pressure wheels located in the second slide groove of the two groups of positioning frames do not contact the drainage tube, the length of the positioning frame is adjustable, and a constant temperature strip is provided in the positioning frame.

[0008] Furthermore, a rack is provided on the side where the first slide groove and the second slide groove are away from each other, and an end gear is provided on the end face of the pressure wheel for sliding in the first slide groove and the second slide groove, and the end gear is meshed with the rack. The distance between the two pressure wheels located in the first slide groove is greater than twice the wall thickness of the drainage tube, and the pressure wheel is arranged in a structure with a narrow center and a wide end. The pressure wheel is driven to rotate by the end gear, and the pressure wheel is driven to rotate. At the same time, due to the meshing of the end gear and the rack, the end gear can be displaced relative to the rack to achieve the effect of moving up and down. The center of the pressure wheel is narrower. When the two pressure wheels clamp and squeeze the drainage tube, a certain amount of space for liquid flow can be reserved at the center of the drainage tube to avoid the problem of abnormal circulation inside the drainage tube when the pressure wheel squeezes the drainage tube.

[0009] Furthermore, the two positioning frames are detachably provided with a connecting frame on the same side, and the connecting frame is provided with two groups and is respectively located on both sides of the positioning frame, and a sliding strip is provided on the outer side of the positioning frame, and a dovetail groove is provided on both sides of the connecting frame facing the positioning frame for sliding with the sliding strip, and the inner wall of the connecting frame is symmetrically provided with convex strips, and the connecting frame is provided with a push plate on the inner side through a spring, and a strip air bag is provided on the side of the push plate away from the spring, and the outer wall of the drainage tube and the inner side surface of the positioning frame are respectively provided with anti-slip grooves that are meshed with each other, and the two groups of connecting frames can be used to limit the two positioning frames to the outer wall of the drainage tube for fixation without shaking, and the anti-slip grooves are provided. The anti-slip effect can be achieved after the positioning frame and the drainage tube are installed, preventing the positioning frame from sliding on the drainage tube as a whole. In addition, when the two pressure wheels squeeze the drainage tube to a flat state, the flat ends of the drainage tube will pass through between the two positioning frames and extend into the connecting frame, squeezing the strip airbag on the outside to the inner side of the convex strip. When the drainage tube loses the squeezing of the pressure wheel, the spring resets and stretches, pushing the push plate and the strip airbag to move toward the drainage tube, and the strip airbag is squeezed to the outside of the convex strip. At this time, the two-point strip airbag can exert a certain pressure on both sides of the drainage tube, promoting the drainage tube to be reset to a circular tubular structure, avoiding the situation where the drainage tube is fatigued and difficult to reset due to long-term squeezing by the pressure wheels.

[0010] Furthermore, the end face of the end gear is driven to rotate by a motor, a motor groove is provided on the inner side of the positioning frame, the motor is slidably arranged in the motor groove, the end face of the end gear is linked to the motor driving end, and the outer wall of the drainage tube close to one end of the storage cavity is provided with an ultrasonic component, the ultrasonic component includes a flexible ultrasonic sheet containing a transmitter and a receiver, a signal conditioning circuit and a single-chip microcomputer, the flexible ultrasonic sheet transmits ultrasonic waves and receives echoes passing through the tube, the signal conditioning circuit converts the echo signal into an electrical signal, and the single-chip microcomputer calculates the liquid flow rate in the tube in real time, and when the flow rate is lower than the preset threshold, the single-chip microcomputer outputs a control signal to drive the motor to start.

[0011] Furthermore, the positioning frame includes two end frames and several auxiliary frames, and the multiple auxiliary frames are detachably arranged between the two end frames. The first slide groove and the second slide groove inside the end frame and the auxiliary frame are correspondingly connected. The side of the end frame and the auxiliary frame is provided with a positioning mechanism. According to the length of the drainage tube, different numbers of auxiliary frames can be selected to be connected between the two end frames, and the length of the blood clot cleaning inside the drainage tube can be adjusted to achieve the effect of local concentrated cleaning or all-round cleaning of the entire drainage tube.

[0012] Furthermore, the positioning mechanism includes a positioning plate and a positioning slot, the positioning slots being provided with two groups and being respectively opened between adjacent end frames and auxiliary frames or between adjacent auxiliary frames, the two groups of positioning slots being connected, one end of the positioning plate being rotated in a positioning slot by a rotating shaft, and the end of the positioning plate away from the rotating shaft being respectively engaged with the end faces of the two positioning slots. Since one end of the positioning plate is rotated on an end frame or an auxiliary frame by a rotating shaft, when the positioning plate is rotated and fitted into the same positioning slot, the positioning plate does not play a limiting role, but rather receives the positioning plate into the positioning slot. Conversely, the positioning plate is rotated in the opposite direction to the adjacent positioning slot. At this time, the two ends of the positioning plate are respectively located in the two positioning slots. After the end faces of the positioning plate are engaged with the positioning slots, the effect of positioning between adjacent end frames and auxiliary frames or between adjacent auxiliary frames can be achieved.

[0013] Furthermore, a Y-shaped groove is provided inside the positioning plate, and an adjustment shaft is provided for sliding at the lower part of the Y-shaped groove. Two hinge bars are hinged at the upper end of the adjusting shaft, and an insertion shaft is hinged at the end face of the hinge bar. Side grooves are provided on both sides of the end of the positioning plate away from the rotating shaft, and two insertion shafts are slidably provided in the side grooves. Slots that are engaged with the insertion shaft are provided on both sides of the end face of the positioning groove. Since the insertion shaft always slides in the side grooves, the height upper limit of the hinge bar is achieved by moving up and down in the Y-shaped groove through the adjusting shaft. When moving up, the two hinge bars can be pushed up, and the two insertion shafts can be driven to move outward in the side grooves until they are inserted into the slots, thereby realizing the engagement and positioning of the positioning plate with the corresponding positioning grooves.

[0014] Furthermore, handles are respectively provided on both sides of the lower end of the adjusting shaft, one end of the handle passes through the side wall of the positioning plate and extends outward, the handle is slidably set on the side wall of the positioning plate, and strip-shaped teeth are provided on both sides of the adjusting shaft, and fixed plates are symmetrically provided on both sides below the Y-shaped groove, and the fixed plate is provided with tooth blocks engaged with the strip-shaped teeth. By pushing the handle set on the outside, the internal adjusting shaft is driven to slide. During the sliding process, the tooth block and the strip-shaped teeth are displaced. When the handle is released and the pressure limit is lost, the tooth block can also engage with the strip-shaped teeth at the corresponding position to prevent displacement.

[0015] Furthermore, the constant temperature strip is provided in plurality and is embedded in the inside of the positioning frame facing the drainage tube. The constant temperature strip is a graphite flexible heating layer. It uses common carbon ink or graphite conductive paste through screen or digital printing process to form a patterned resistance strip on the PET or PI base film. The thickness is ultra-thin and can maintain the temperature to near body temperature.

[0016] Furthermore, the drainage holes are provided in plurality and are evenly distributed on the end face and side wall of the drainage tube. The drainage tube is provided with a one-way valve on the inner wall of one end of the drainage hole. By providing a plurality of drainage holes, it is possible to avoid the situation in which one drainage hole is blocked during the drainage process, causing the entire drainage tube to be blocked. The setting of the one-way valve can avoid the situation in which the liquid in the drainage tube flows back into the patient's body when the drainage tube is squeezed by the pressure wheel, causing the patient's wound infection. The one-way valve is an umbrella-type check valve.

[0017] The beneficial effects of the present invention are:

[0018] The present invention drives the two pressure wheels in the cleaning mechanism to rotate synchronously in opposite directions, so that they move in the corresponding first chute and second chute respectively. When moving in the first chute, the two pressure wheels squeeze the drainage tube and move along the drainage direction. If blood clots accumulate in the drainage tube, the blood clots can be clamped and pushed into the storage cavity by the two pressure wheels, effectively preventing the blood clots from accumulating in the drainage tube and causing drainage slowdown or even blockage. When the pressure wheel continues to move into the second chute, the pressure wheel is away from the drainage tube and moves toward one end away from the storage cavity. The drainage tube is restored to a rounded state. When the pressure wheel moves When it reaches the first chute, the above steps are repeated to drain the liquid in the drainage tube. The setting of the insulation sleeve can ensure that the accumulated fluid in the body will not lose temperature quickly when leaving the body. The body fluid at a low temperature will accelerate to solidify into a jelly-like state and adhere to the inner wall of the drainage tube. In addition, a constant temperature strip is set inside the positioning frame to ensure that the temperature of the body fluid in the drainage tube passing through the positioning frame is constant at around body temperature, avoiding the situation where the temperature drops due to flowing in the drainage tube for too long. The setting of the cleaning mechanism can realize automatic cleaning of the accumulated blood that may be stored in the drainage tube, without the need for medical staff to check frequently. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A three-dimensional diagram of a blood accumulation prevention and drainage device provided by the present invention;

[0021] Figure 2 A schematic diagram of the assembly structure of a positioning frame, a connecting frame and a drainage tube of a drainage device for preventing blood accumulation provided by the present invention;

[0022] Figure 3 A schematic diagram of the internal structure of a positioning frame of a blood accumulation prevention and drainage device provided by the present invention;

[0023] Figure 4 A schematic diagram of the internal structure of a positioning plate of a blood accumulation prevention and drainage device provided by the present invention;

[0024] Figure 5 A schematic diagram of the structure of an adjustment shaft and a gear block of a drainage device for preventing blood accumulation provided by the present invention;

[0025] Figure 6 A schematic diagram of the positioning frame and pressure wheel structure of a blood accumulation prevention and drainage device provided by the present invention;

[0026] Figure 7 A schematic diagram of the internal structure of a connecting frame of a blood accumulation prevention and drainage device provided by the present invention;

[0027] Figure 8 A schematic diagram of a state where the pressure wheel of the anti-blood accumulation drainage device provided by the present invention is located in the second slide groove;

[0028] Figure 9 A schematic diagram of a state where the pressure wheel of the anti-blood accumulation drainage device provided by the present invention is located in the first slide groove;

[0029] Figure 10 A schematic diagram of the structure of a drainage tube and ultrasonic component of a drainage device for preventing blood accumulation provided by the present invention;

[0030] Figure 11 This is a schematic diagram of the assembly structure of the drainage tube and one-way valve of an anti-blood accumulation drainage device provided by the present invention.

[0031] Legend:

[0032] 1. Drainage tube; 2. Storage chamber; 3. Drainage hole; 4. Insulation sleeve; 511. Positioning frame; 512. Pressing wheel; 513. First slide; 514. Second slide; 515. Constant temperature strip; 521. Rack; 522. End gear; 531. Connecting frame; 532. Slide; 533. Dovetail groove; 534. Raised strip; 535. Spring; 536. Push plate; 537. Strip airbag; 541. Motor; 542. Motor slot; 543, ultrasonic component; 5431, flexible ultrasonic sheet; 611, end frame; 612, auxiliary frame; 711, positioning plate; 712, positioning slot; 713, rotating shaft; 721, Y-shaped slot; 722, adjusting shaft; 723, hinge strip; 724, plug-in shaft; 725, side slot; 726, slot; 731, handle; 732, bar tooth groove; 733, fixing plate; 734, tooth block; 8, one-way valve. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0034] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0035] Secondly, as referred to herein, "one embodiment" or "an embodiment" refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0036] See also Figures 1-11The present invention provides a technical solution: a drainage device for preventing blood accumulation, comprising a drainage tube 1 and a storage chamber 2, wherein one end of the drainage tube 1 is connected to the storage chamber 2 and the other end is provided with a drainage hole 3, the storage chamber 2 is connected to a negative pressure device, an end of the outer wall of the drainage tube 1 near the drainage hole 3 is provided with a heat preservation sleeve 4, an outer side of the end of the drainage tube 1 near the storage chamber 2 is provided with a cleaning mechanism, the cleaning mechanism comprises two sets of symmetrically arranged positioning frames 511, a pressure wheel 512 is provided inside the positioning frame 511, and a parallel opening is provided inside the positioning frame 511. A first slide groove 513 and a second slide groove 514 are provided which are slidably connected to the pressure wheel 512. The two ends of the first slide groove 513 and the second slide groove 514 are connected to each other. The first slide groove 513 is set toward the drainage tube 1. The pressure wheels 512 located in the first slide groove 513 in the two groups of positioning frames 511 squeeze the drainage tube 1 until it is deformed. The pressure wheels 512 located in the second slide groove 514 in the two groups of positioning frames 511 do not contact the drainage tube 1. The length of the positioning frame 511 can be adjusted, and a constant temperature strip 515 is provided in the positioning frame 511.

[0037] like Figures 1-11 As shown, a rack 521 is provided on the side where the first slide groove 513 and the second slide groove 514 are away from each other, and an end gear 522 is provided on the end face of the pressure wheel 512 to slide in the first slide groove 513 and the second slide groove 514. The end gear 522 meshes with the rack 521. The distance between the two pressure wheels 512 located in the first slide groove 513 is greater than twice the wall thickness of the drainage tube 1. The pressure wheel 512 is arranged in a structure with a narrow center and wide ends. The end gear 522 is driven to rotate, driving the pressure wheel 512 to rotate. At the same time, due to the meshing of the end gear 522 with the rack 521, the end gear 522 can be displaced relative to the rack 521 to achieve the effect of moving up and down. The center of the pressure wheel 512 is narrow. When the two pressure wheels 512 clamp and squeeze the drainage tube 1, a certain amount of space for liquid flow can be reserved at the center of the drainage tube 1 to avoid the problem of abnormal circulation inside the drainage tube 1 caused by the pressure wheel 512 squeezing the drainage tube 1.

[0038] like Figures 1-11As shown, the same side of the two positioning frames 511 is detachably provided with a connecting frame 531, and the connecting frame 531 is provided with two groups and is respectively located on both sides of the positioning frame 511. A slide bar 532 is provided on the outside of the positioning frame 511, and dovetail grooves 533 are provided on both sides of the connecting frame 531 facing the positioning frame 511, and a slide bar 532 is slidably arranged with the slide bar 532. The inner wall of the connecting frame 531 is symmetrically provided with convex strips 534, and the connecting frame 531 is provided with a push plate 536 on the inner side through a spring 535, and a strip air bag 537 is provided on the side of the push plate 536 away from the spring 535. The outer wall of the drainage tube 1 and the inner side surface of the positioning frame 511 are respectively provided with anti-slip grooves that are engaged with each other. The two groups of connecting frames 531 can be used to limit the two positioning frames 511 to the outer wall of the drainage tube 1 for fixation without shaking. The anti-slip grooves can be used to prevent the positioning frame 511 from shaking. After the frame 511 and the drainage tube 1 are installed, an anti-slip effect is achieved to prevent the positioning frame 511 from sliding on the drainage tube 1 as a whole. In addition, when the two pressure wheels 512 squeeze the drainage tube 1 to a flat state, the flat ends of the drainage tube 1 will pass through the two positioning frames 511 and extend into the connecting frame 531, squeezing the strip airbag 537 located on the outside to the inner side of the convex strip 534. When the drainage tube 1 loses the squeezing of the pressure wheel 512, the spring 535 resets and stretches, pushing the push plate 536 and the strip airbag 537 to move toward the drainage tube 1, and the strip airbag 537 is squeezed to the outside of the convex strip 534. At this time, the two-point strip airbag 537 can apply a certain pressure on both sides of the drainage tube 1, promoting the drainage tube 1 to return to the circular tubular structure, avoiding the situation where the drainage tube 1 is fatigued and difficult to return to its original position due to long-term squeezing by the pressure wheel 512.

[0039] like Figures 1-11 As shown, the end face of the end gear 522 is driven to rotate by the motor 541, a motor slot 542 is provided on the inner side of the positioning frame 511, and the motor 541 is slidably set in the motor slot 542. The end face of the end gear 522 is linked to the driving end of the motor 541, and an ultrasonic component 543 is provided on the outer wall of the drainage tube 1 close to the storage chamber 2. The ultrasonic component 543 includes a flexible ultrasonic sheet 5431 containing a transmitter and a receiver, a signal conditioning circuit and a single-chip microcomputer. The flexible ultrasonic sheet 5431 transmits ultrasonic waves and receives echoes passing through the tube. The signal conditioning circuit converts the echo signal into an electrical signal, and the single-chip microcomputer calculates the liquid flow rate in the tube in real time. When the flow rate is lower than the preset threshold, the single-chip microcomputer outputs a control signal to drive the motor 541 to start.

[0040] like Figures 1-11As shown, the positioning frame 511 includes two end frames 611 and several auxiliary frames 612. The multiple auxiliary frames 612 are detachably arranged between the two end frames 611. The first slide groove 513 and the second slide groove 514 inside the end frames 611 and the auxiliary frames 612 are correspondingly connected. Positioning mechanisms are provided on the sides of the end frames 611 and the auxiliary frames 612. According to the length of the drainage tube 1, different numbers of auxiliary frames 612 can be selected to be connected between the two end frames 611, and the length of the blood clot cleaning inside the drainage tube 1 can be adjusted to achieve the effect of local concentrated cleaning or all-round cleaning of the entire drainage tube 1.

[0041] like Figures 1-11 As shown, the positioning mechanism includes a positioning plate 711 and a positioning slot 712. There are two groups of positioning slots 712, which are respectively opened between adjacent end frames 611 and auxiliary frames 612 or between adjacent auxiliary frames 612. The two groups of positioning slots 712 are connected. One end of the positioning plate 711 is rotated and set in a positioning slot 712 through a rotating shaft 713. The end of the positioning plate 711 away from the rotating shaft 713 is respectively engaged with the end faces of the two positioning slots 712. Since one end of the positioning plate 711 is rotated and set on an end frame 611 or an auxiliary frame 612 through a rotating shaft 713, On the auxiliary frame 612, when the positioning plate 711 is rotated and fitted into the same positioning groove 712, the positioning plate 711 does not play a limiting role, but rather stores the positioning plate 711 into the positioning groove 712. Conversely, the positioning plate 711 is rotated in the opposite direction to the adjacent positioning groove 712. At this time, the two ends of the positioning plate 711 are respectively located in the two positioning grooves 712. After the end face of the positioning plate 711 is buckled with the positioning groove 712, the effect of positioning between the adjacent end frames 611 and the auxiliary frames 612 or between adjacent auxiliary frames 612 can be achieved.

[0042] like Figures 1-11 When the lock is unlocked, the locking plate 720 is unlocked, and the lock is unlocked, so that the lock is unlocked, and the lock is unlocked, and the lock is unlocked.

[0043] like Figures 1-11As shown, handles 731 are provided on both sides of the lower end of the adjusting shaft 722, one end of the handle 731 passes through the side wall of the positioning plate 711 and extends outward, and the handle 731 is slidably set on the side wall of the positioning plate 711, and bar-shaped tooth grooves 732 are provided on both sides of the adjusting shaft 722. Fixed plates 733 are symmetrically provided on both sides below the Y-shaped groove 721, and tooth blocks 734 are provided on the fixed plates 733 to engage with the bar-shaped tooth grooves 732. By pushing the handle 731 set on the outside, the internal adjusting shaft 722 is driven to slide. During the sliding process, the tooth block 734 and the bar tooth groove 732 are displaced. When the handle 731 is released and the pressure limit is lost, the tooth block 734 can also engage with the bar tooth groove 732 at the corresponding position to prevent displacement.

[0044] like Figures 1-11 As shown, multiple constant temperature strips 515 are provided and embedded in the interior of the positioning frame 511 facing the drainage tube 1. The constant temperature strip 515 is a graphite flexible heating layer. It uses common carbon ink or graphite conductive paste through screen or digital printing technology to form a patterned resistance strip on a PET or PI base film. The thickness is ultra-thin and can maintain the temperature to near body temperature.

[0045] There are multiple drainage holes 3 and they are evenly distributed on the end face and side wall of the drainage tube 1. The drainage tube 1 is provided with a drainage hole 3 and a one-way valve 8 is provided on the inner wall of one end. By providing multiple drainage holes 3, it is possible to avoid the situation where one drainage hole 3 is blocked during the drainage process, causing the entire drainage tube 1 to be blocked. The setting of the one-way valve 8 can prevent the liquid in the drainage tube 1 from flowing back into the patient's body when the drainage tube 1 is squeezed by the pressure wheel 512, causing the patient's wound infection. The one-way valve 8 is an umbrella-type check valve.

[0046] Working principle: During the drainage operation, one end of the drainage tube 1 with the drainage hole 3 is placed into the position of the fluid accumulation in the patient's body and fixed, and then the insulation cover 4 is put on the drainage tube 1 close to the wound but not touching the wound. Two positioning frames 511 are selected and fixed on both sides of the drainage tube 1 to complete its positioning. The port of the storage chamber 2 is connected to the external negative pressure device, and the appropriate negative pressure is adjusted to suck the fluid accumulated in the patient's body into the storage chamber 2 along the drainage tube 1. At this time, the two pressure wheels 512 in the cleaning mechanism are driven to rotate synchronously in opposite directions so that they move in the corresponding first slide groove 513 and second slide groove 514 respectively. When moving in the first slide groove 513, the two pressure wheels 512 squeeze the drainage tube 1 and move along the drainage direction. If there is blood clot accumulated in the drainage tube 1, the blood clot can be clamped by the two pressure wheels 512 and pushed into the storage chamber 2, effectively preventing the blood clot from accumulating in the drainage tube 1 and causing drainage. When the pressure wheel 512 moves into the first chute 513, the above steps are repeated to drain the liquid in the drainage tube 1. The setting of the thermal insulation sleeve 4 can ensure that the accumulated fluid in the body will not lose temperature quickly when leaving the body. The body fluid at a lower temperature will accelerate to solidify into a jelly-like state and adhere to the inner wall of the drainage tube 1. In addition, a constant temperature strip 515 is provided inside the positioning frame 511 to ensure that the temperature of the body fluid in the drainage tube 1 passing through the positioning frame 511 is constant at around body temperature, avoiding the situation where the temperature drops due to too long a flow time in the drainage tube 1. The setting of the cleaning mechanism can realize automatic cleaning of the accumulated blood in the drainage tube 1 without the need for medical staff to check frequently.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A blood accumulation prevention drainage device, comprising a drainage tube (1) and a storage chamber (2), wherein one end of the drainage tube (1) is connected to the storage chamber (2) and the other end is provided with a drainage hole (3), and the storage chamber (2) is connected to a negative pressure device, characterized in that: An insulation sleeve (4) is provided on the outer wall of the drainage tube (1) at one end close to the drainage hole (3), and a cleaning mechanism is provided on the outer side of one end of the drainage tube (1) close to the storage chamber (2), wherein the cleaning mechanism comprises two sets of symmetrically arranged positioning frames (511), wherein a pressure wheel (512) is provided in a sliding manner inside the positioning frame (511), and wherein a first slide groove (513) and a second slide groove (514) are provided in parallel in the positioning frame (511) and are slidably connected to the pressure wheel (512), wherein the first slide groove (513) The two ends of the first and second chutes (514) are connected to each other, the first chutes (513) are arranged toward the drainage tube (1), the pressure wheels (512) located in the first chutes (513) in the two groups of the positioning frames (511) squeeze the drainage tube (1) until it is deformed, and the pressure wheels (512) located in the second chutes (514) in the two groups of the positioning frames (511) do not contact the drainage tube (1), the length of the positioning frames (511) can be adjusted, and a constant temperature strip (515) is provided in the positioning frames (511).

2. The anti-blood accumulation drainage device according to claim 1, characterized in that: A rack (521) is provided on the side where the first chute (513) and the second chute (514) are away from each other, and an end gear (522) is provided on the end face of the pressure wheel (512) so as to be slidably arranged in the first chute (513) and the second chute (514). The end gear (522) is engaged with the rack (521). The distance between the two pressure wheels (512) in the first chute (513) is greater than twice the wall thickness of the drainage tube (1), and the pressure wheel (512) is arranged in a structure with a narrow center and wide ends.

3. The anti-blood accumulation drainage device according to claim 2, characterized in that: The two positioning frames (511) are detachably provided with a connecting frame (531) on the same side. The connecting frame (531) is provided with two groups and is respectively located on both sides of the positioning frame (511). A sliding bar (532) is provided on the outer side of the positioning frame (511). The connecting frame (531) is provided with dovetail grooves (533) on both sides of the side facing the positioning frame (511) and slidingly arranged with the sliding bar (532). The inner wall of the connecting frame (531) is symmetrically provided with convex strips (534). The connecting frame (531) is provided with a push plate (536) on the inner side through a spring (535). The push plate (536) is provided with a strip air bag (537) on the side away from the spring (535). The outer wall of the drainage tube (1) and the inner side surface of the positioning frame (511) are respectively provided with anti-slip grooves that are meshed with each other.

4. The anti-blood accumulation drainage device according to claim 3, characterized in that: The end face of the end gear (522) is driven to rotate by a motor (541); a motor slot (542) is provided on the inner side of the positioning frame (511); the motor (541) is slidably arranged in the motor slot (542); the end face of the end gear (522) is linked to the driving end of the motor (541); an ultrasonic component (543) is provided on the outer wall of one end of the drainage tube (1) close to the storage chamber (2); the ultrasonic component (543) comprises a flexible ultrasonic sheet (5431) containing a transmitter and a receiver, a signal conditioning circuit and a single-chip microcomputer; the flexible ultrasonic sheet (5431) transmits ultrasonic waves and receives echoes passing through the tube; the signal conditioning circuit converts the echo signals into electrical signals, and the single-chip microcomputer calculates the flow rate of the liquid in the tube in real time; when the flow rate is lower than a preset threshold, the single-chip microcomputer outputs a control signal to drive the motor (541) to start.

5. The anti-blood accumulation drainage device according to claim 4, characterized in that: The positioning frame (511) includes two end frames (611) and a plurality of auxiliary frames (612). The plurality of auxiliary frames (612) are detachably arranged between the two end frames (611). The first sliding groove (513) and the second sliding groove (514) inside the end frames (611) and the auxiliary frames (612) are correspondingly connected. Positioning mechanisms are provided on the sides of the end frames (611) and the auxiliary frames (612).

6. The anti-blood accumulation drainage device according to claim 5, characterized in that: The positioning mechanism comprises a positioning plate (711) and a positioning groove (712). The positioning groove (712) is provided with two groups and is respectively opened between adjacent end frames (611) and auxiliary frames (612) or between adjacent auxiliary frames (612). The two groups of positioning grooves (712) are connected and arranged. One end of the positioning plate (711) is rotatably arranged in one positioning groove (712) through a rotating shaft (713). The end of the positioning plate (711) away from the rotating shaft (713) is respectively engaged with the end faces of the two positioning grooves (712).

7. The anti-blood accumulation drainage device according to claim 6, characterized in that: A Y-shaped groove (721) is provided inside the positioning plate (711), and an adjustment shaft (722) is slidably provided below the Y-shaped groove (721). The upper end of the adjustment shaft (722) is hinged with two hinge bars (723), and the end face of the hinge bar (723) is hinged with an insertion shaft (724). Side grooves (725) are provided on both sides of one end of the positioning plate (711) away from the rotating shaft (713), and two insertion shafts (724) are slidably provided in the side grooves (725). Slots (726) are provided on both sides of the end face of the positioning groove (712) to engage with the insertion shaft (724).

8. The anti-blood accumulation drainage device according to claim 7, characterized in that: A handle (731) is provided on both sides of the lower end of the adjusting shaft (722), one end of the handle (731) passes through the side wall of the positioning plate (711) and extends outward, and the handle (731) is slidably set on the side wall of the positioning plate (711), and a strip-shaped tooth groove (732) is provided on both sides of the adjusting shaft (722), and a fixed plate (733) is symmetrically provided on both sides below the Y-shaped groove (721), and a tooth block (734) is provided on the fixed plate (733) to engage with the strip-shaped tooth groove (732).

9. The anti-blood accumulation drainage device according to claim 1, characterized in that: The constant temperature strips (515) are provided in plurality and are embedded in the interior of the positioning frame (511) on a side facing the drainage tube (1).

10. The anti-blood accumulation drainage device according to claim 9, characterized in that: The drainage holes (3) are provided in plurality and are evenly distributed on the end surface and side wall of the drainage tube (1); the drainage tube (1) is provided with a one-way valve (8) on the inner wall of one end of the drainage hole (3).

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