Wound surface negative pressure suction instrument with accurate metering function

Abstract

The invention relates to the technical field of negative pressure suction instruments, in particular to a wound surface negative pressure suction instrument with an accurate metering function, which comprises a fixed seat, one side of the fixed seat is rotatably connected with a mounting frame, a negative pressure suction instrument is placed on the mounting frame, the other side of the fixed seat is slidably matched with a foot rest plate, and the top end of the fixed seat is rotatably connected with a rotating frame. A movable frame is arranged on one side of the rotating frame, a dressing replacing mechanism is arranged in the movable frame in a sliding fit mode, and a transmission mechanism is fixedly connected to the top end of the movable frame. The dressing winding rod can drive the dressing to slightly shake, the shaking can help to reduce adhesion between the dressing and a wound, wound tissue is not prone to being pulled when the dressing is taken down, manual operation is reduced, and unnecessary stimulation to the wound surface in the dressing replacement process is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of negative pressure suction devices, and particularly to a wound negative pressure suction device with an accurate metering function. Background Art

[0002] A wound negative pressure suction device with an accurate metering function is a device used to accelerate wound healing, especially suitable for the treatment of chronic wounds, wounds, and postoperative wounds. It promotes wound healing by using negative pressure, and at the same time can manage wound exudate and reduce the risk of infection. In a negative pressure suction device, the accurate metering function is mainly reflected in the accurate control of negative pressure (pressure) and suction flow rate. Accurately controlling these two parameters can ensure the treatment effect and avoid adverse consequences caused by over-suction or insufficient suction.

[0003] When performing negative pressure adsorption on a wound, the negative pressure suction device relies on a dressing to form a sealed environment to ensure that the negative pressure can effectively act on the wound. Without a suitable dressing, the negative pressure cannot continue to function. When performing negative pressure suction on a foot wound, during the wound healing process, the wound will secrete exudate, and the dressing is likely to adhere to the wound surface. Since the existing wound negative pressure suction devices are not convenient for replacing the dressing instead of manual operation, manual operation may cause pulling or irritation to the wound, and even cause secondary injury to the wound, delaying the healing process.

[0004] In summary, in the prior art, there is a lack of technology for assisting in replacing the dressing for foot wounds. Summary of the Invention

[0005] The purpose of the present invention is to solve the deficiencies in the background art and propose a wound negative pressure suction device with an accurate metering function.

[0006] To achieve the above object, the technical solution adopted by the present invention is: a wound negative pressure suction device with an accurate metering function, including a fixed seat. On one side of the fixed seat, a mounting frame is rotatably connected. A negative pressure suction device is placed on the mounting frame. On the other side of the fixed seat, a footrest is slidably fitted. On the top of the fixed seat, a rotating frame is rotatably connected. On one side of the rotating frame, a moving frame is provided. A dressing replacement mechanism is slidably fitted in the moving frame. On the top of the moving frame, a transmission mechanism is fixedly connected.

[0007] Preferably, on one side of the fixed seat where the footrest is located, a toe rubber sleeve is fixedly connected. An electric push rod A is fixedly connected inside the fixed seat. The output end of the electric push rod A is fixedly connected to an adjusting block fixedly connected to one side of the footrest. A rubber pad is fixedly connected to the footrest.

[0008] Preferably, a tension spring A is fixedly connected to the bottom end of the mounting frame, the other end of the tension spring A is fixedly connected to the fixed seat, clamping plates are arranged on both sides of the bottom end of the mounting frame, two sliders are fixedly connected to the lower side of the clamping plates, the sliders are slidably matched with the inner wall of the mounting frame, a tension spring B is fixedly connected to one side of the slider, the other end of the tension spring B is fixedly connected to the inner wall of the mounting frame, and the clamping plates are adapted to the outer wall of the negative pressure suction instrument.

[0009] Preferably, a suction tube is connected to the bottom end of the negative pressure suction instrument, the other end of the suction tube is fixedly connected with a dressing, a Bluetooth module is installed in the negative pressure suction instrument, and a weighing instrument is installed in the negative pressure suction instrument.

[0010] Preferably, a motor A is fixedly connected to one end of the rotating frame connected to the fixed seat, the motor A is fixedly connected to the inner wall of the fixed seat, a threaded rod is rotatably connected through the rotating frame, a sliding seat is threadedly connected to the threaded rod, and an electric push rod B is fixedly connected to the bottom end of the sliding seat. The output end of the electric push rod B is fixedly connected to the moving frame.

[0011] Preferably, the dressing replacement mechanism includes a movable frame, the movable frame is slidably matched with the moving frame, a spring is fixedly connected to one side of the movable frame, the other end of the spring is fixedly connected to the moving frame, a dressing winding rod is rotatably connected to the movable frame, and two dressing clips are symmetrically connected to the dressing winding rod.

[0012] Preferably, a worm gear sleeve is rotatably connected to one side of the top end of the movable frame, a worm gear is fixedly connected to the top end of the dressing winding rod, the worm gear sleeve is meshed and driven with the worm gear, and a contact block is fixedly connected to the other side of the top end of the movable frame.

[0013] Preferably, the transmission mechanism includes a motor B, the motor B is fixedly connected to the moving frame, the output end of the motor B is fixedly connected with a transmission rod, the transmission rod is slidably matched with the worm gear sleeve through penetration, a universal joint is fixedly connected to the other end of the transmission rod, the universal joint is rotatably connected to the moving frame, and a driving wheel is fixedly connected to the other end of the universal joint.

[0014] Preferably, a driven wheel is rotatably connected to the top end of the moving frame, the driven wheel is meshed and driven with the driving wheel, a concave-convex disc is fixedly connected below the driven wheel, and the outer wall of the concave-convex disc is in sliding contact with the contact block.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. By setting up a dressing replacement mechanism, the used dressing can be wound up by the dressing winding rod. Meanwhile, with the cooperation of the concave-convex disc and the spring, the dressing winding rod can drive the dressing to produce slight vibrations. This kind of vibration helps to reduce the adhesion between the dressing and the wound, making it not easy to strain the wound tissue when removing the dressing, reducing manual operation, and avoiding unnecessary irritation to the wound surface during the dressing replacement process.

[0017] 2. By setting up a fixed seat and a toe rubber sleeve on the fixed seat, and cooperating with the adjustable footrest, a stable support platform can be provided for the foot, preventing the foot from moving or displacing during the treatment process. Because only when the foot is fixed in an accurate position can the negative pressure suction act better on the wound surface to promote wound healing. At the same time, it can effectively avoid unnecessary external interference, protect the wound surface from external friction or collision, and help reduce the risk of wound surface infection and further damage.

[0018] 3. By setting up a splint on the mounting frame, it is convenient to install and fix the negative pressure suction device, avoiding the displacement or tilt of the device due to external interference or operation errors, so as to ensure that the negative pressure suction device always maintains a stable working state. At the same time, by setting a rotatable mounting frame, it is convenient to adjust the angle of the negative pressure suction device, thus facilitating the viewing of the data on the negative pressure suction device. At the same time, by setting up a rotating frame and a moving frame, it is convenient to replace the dressings at different positions of the foot, improving the operation efficiency and comfort of the nursing staff, and reducing the risk of wound surface exposure and infection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. 1 is a schematic view of one side of the overall structure of a wound surface negative pressure suction device with an accurate measurement function according to the present invention;

[0020] Figure 2 FIG. 2 is a schematic view of the other side of the overall structure of a wound surface negative pressure suction device with an accurate measurement function according to the present invention;

[0021] Figure 3 FIG. 3 is an expanded schematic view of the fixed seat and other structures of a wound surface negative pressure suction device with an accurate measurement function according to the present invention;

[0022] Figure 4 FIG. 4 is a partial cross-sectional schematic view of the mounting frame structure of a wound surface negative pressure suction device with an accurate measurement function according to the present invention;

[0023] Figure 5 FIG. 5 is a schematic view of the negative pressure suction device structure of a wound surface negative pressure suction device with an accurate measurement function according to the present invention;

[0024] Figure 6 FIG. 6 is an expanded structural schematic view of the rotating frame of a wound surface negative pressure suction device with an accurate measurement function according to the present invention;

[0025] Figure 7 Schematic structural diagram of the dressing replacement mechanism of a wound negative pressure suction device with precise metering function according to the present invention;

[0026] Figure 8 Schematic structural diagram of the transmission mechanism of a wound negative pressure suction device with precise metering function according to the present invention;

[0027] Figure 9 Schematic structural diagram of the mobile rack of a wound negative pressure suction device with precise metering function according to the present invention.

[0028] The labels in the figure are: 1, fixed seat; 2, mounting frame; 3, negative pressure suction device; 4, footrest board; 5, rotating frame; 6, mobile rack; 7, dressing replacement mechanism; 8, transmission mechanism; 101, toe rubber sleeve; 102, electric push rod A; 401, adjusting block; 402, rubber pad; 201, tension spring A; 202, clamp; 203, tension spring B; 204, slider; 301, suction tube; 302, dressing; 501, motor A; 502, threaded rod; 503, sliding seat; 504, electric push rod B; 701, movable frame; 702, spring; 703, dressing winding rod; 704, dressing clip; 705, worm sleeve; 706, worm gear; 707, contact block; 801, motor B; 802, transmission rod; 803, universal joint; 804, driving wheel; 601, driven wheel; 602, concave-convex disk. Detailed implementation manners

[0029] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations.

[0030] As Figures 1-9 shown, a wound negative pressure suction device with precise metering function includes a fixed seat 1. A mounting frame 2 is rotatably connected and arranged on one side of the fixed seat 1. A negative pressure suction device 3 is placed on the mounting frame 2. A footrest board 4 is slidably matched and arranged on the other side of the fixed seat 1. A rotating frame 5 is rotatably connected and arranged at the top of the fixed seat 1. A mobile rack 6 is arranged on one side of the rotating frame 5. A dressing replacement mechanism 7 is slidably matched and arranged inside the mobile rack 6. A transmission mechanism 8 is fixedly connected and arranged at the top of the mobile rack 6.

[0031] As Figure 3 shown, a toe rubber sleeve 101 is fixedly connected and arranged on one side of the fixed seat 1 where the fixed seat 1 is located relative to the footrest board 4. An electric push rod A 102 is fixedly connected and arranged inside the fixed seat 1. The output end of the electric push rod A 102 is fixedly connected and arranged with an adjusting block 401 fixedly connected to one side of the footrest board 4. A rubber pad 402 is fixedly connected and arranged on the footrest board 4. The electric push rod A 102 is used to drive the footrest board 4 connected to the adjusting block 401 to move upward, so that the big toe of the foot can be inserted into the toe rubber sleeve 101 for positioning.

[0032] As Figure 4 shown, a tension spring A201 is fixedly connected to the bottom end of the mounting bracket 2. The other end of the tension spring A201 is fixedly connected to the fixed seat 1. On both sides of the bottom end of the mounting bracket 2, there are clamping plates 202. Two sliders 204 are fixedly connected to the lower side of the clamping plates 202. The sliders 204 are slidably engaged with the inner wall of the mounting bracket 2. A tension spring B203 is fixedly connected to one side of the slider 204. The other end of the tension spring B203 is fixedly connected to the inner wall of the mounting bracket 2. The clamping plates 202 are adapted to the outer wall of the negative pressure suction instrument 3. When the negative pressure suction instrument 3 is placed between the two clamping plates 202, at this time, under the action of the tension spring A201, the slider 204 will drive the connected clamping plate 202 to clamp and fix the negative pressure suction instrument 3. The tension spring B203 facilitates pulling the mounting bracket 2 back to its fixed position.

[0033] As Figure 5 shown, a suction tube 301 is connected to the bottom end of the negative pressure suction instrument 3. The other end of the suction tube 301 is fixedly connected to a dressing 302. A Bluetooth module is installed inside the negative pressure suction instrument 3, and a weighing instrument is installed inside the negative pressure suction instrument 3. The dressing 302 is made of a cellulose material. The cellulose material has good hygroscopicity, can absorb wound exudate, keep the wound clean, and the fiber material is usually used for the suction layer of negative pressure suction to help absorb and guide the flow of exudate.

[0034] As Figure 6 shown, a motor A501 is fixedly connected to one end of the rotating frame 5 connected to the fixed seat 1. The motor A501 is fixedly connected to the inner wall of the fixed seat 1. A threaded rod 502 is rotatably connected through the rotating frame 5. A sliding seat 503 is threadedly connected to the threaded rod 502. An electric push rod B504 is fixedly connected to the bottom end of the sliding seat 503. The output end of the electric push rod B504 is fixedly connected to the moving frame 6. The motor A501 is used to drive the rotating frame 5 to rotate to a suitable angle, then the threaded rod 502 is rotated, so that the threaded rod 502 drives the sliding seat 503 to move, and then the electric push rod B504 is used to drive the moving frame 6 to move to a suitable position.

[0035] As Figure 7 shown, the dressing replacement mechanism 7 includes a movable frame 701. The movable frame 701 is slidably engaged with the moving frame 6. A spring 702 is fixedly connected to one side of the movable frame 701. The other end of the spring 702 is fixedly connected to the moving frame 6. A dressing winding rod 703 is rotatably connected to the movable frame 701. Two dressing clips 704 are symmetrically connected to the dressing winding rod 703.

[0036] A worm sleeve 705 is rotatably connected to one side of the top of the movable frame 701, a worm wheel 706 is fixedly connected to the top of the dressing reeling rod 703, the worm sleeve 705 and the worm wheel 706 are meshed and driven, and a contact block 707 is fixedly connected to the other side of the top of the movable frame 701. One end of the dressing 302 is clamped by two dressing clamps 704, and then the motor B801 is used to drive the transmission rod 802 to rotate, so that the transmission rod 802 drives the worm sleeve 705 to rotate, and at this time the worm sleeve 705 drives the worm wheel 706 to rotate, so that the worm wheel 706 drives the connected dressing reeling rod 703 to rotate slowly and uniformly.

[0037] By setting up the dressing replacement mechanism 7, the dressing 302 after use can be rolled up by the dressing rolling rod 703. At the same time, with the cooperation of the concave-convex disk 602 and the spring 702, the dressing rolling rod 703 can drive the dressing 302 to produce a slight vibration. This vibration can help reduce the adhesion between the dressing 302 and the wound, making it less likely to tear the wound tissue when removing it, reducing manual operation, and avoiding unnecessary stimulation to the wound surface during the replacement of the dressing 302.

[0038] like Figure 8 As shown, the transmission mechanism 8 includes a motor B801, which is fixedly connected to the moving frame 6, and a transmission rod 802 is fixedly connected to the output end of the motor B801. The transmission rod 802 and the worm sleeve 705 are slidingly matched, and the other end of the transmission rod 802 is fixedly connected to a universal joint 803, and the universal joint 803 is rotatably connected to the moving frame 6, and the other end of the universal joint 803 is fixedly connected to a driving wheel 804.

[0039] like Figure 9 As shown, the top of the mobile frame 6 is rotatably connected with a driven wheel 601, which is meshed with the driving wheel 804 for transmission, and a concave-convex disk 602 is fixedly connected to the bottom of the driven wheel 601, and the outer wall of the concave-convex disk 602 is in sliding contact with the contact block 707. The transmission rod 802 drives the driving wheel 804 connected to the universal joint 803 to rotate, so that the driving wheel 804 drives the driven wheel 601 to rotate, and at this time the driven wheel 601 drives the connected concave-convex disk 602 to rotate, and then the concave-convex disk 602 cooperates with the spring 702, which makes the movable frame 701 connected to the contact block 707 move back and forth quickly, thereby causing the dressing 302 to vibrate slightly.

[0040] Working principle: When the wound surface of the foot needs to be suctioned with negative pressure, the foot is first placed on the footrest board 4, and then the footrest board 4 connected to the adjustment block 401 is driven upward by the electric push rod A102, so that the big toe of the foot can be inserted into the toe rubber sleeve 101 for limiting;

[0041] Then connect the suction tube 301 to the bottom end of the negative pressure suction device 3, and place the negative pressure suction device 3 between the two clamping plates 202. At this time, under the action of the tension spring A201, the slider 204 will drive the connected clamping plate 202 to clamp and fix the negative pressure suction device 3. Then cover the dressing 302 connected to the other end of the suction tube 301 on the wound surface, and then use medical tape to stick the dressing 302 on the foot. Then use the negative pressure suction device 3 to generate negative pressure, and suck out the liquid flowing out of the wound surface through the suction tube 301;

[0042] Then the weighing instrument in the negative pressure suction device 3 measures the weight and volume of the sucked liquid. Each time a measurement is made, the system calculates the change in weight based on the reading of the weighing instrument. According to the density of the liquid (usually using the density of water, 1g = 1ml), the change in weight can be converted into a change in liquid volume (unit: ml). For example, if the weight of the container increases from 200g to 210g, it means that 10g of liquid has been sucked, which is equivalent to 10ml of liquid (assuming the liquid has the same density as water, in fact, the density of tissue fluid is higher than that of water). Set a threshold for the liquid suction volume (such as 10ml) in the system. The system will monitor the liquid suction volume in real time. If the suction volume exceeds the set threshold within a time interval (such as 1 hour), the system will send an alarm signal. This threshold can be adjusted according to clinical needs. If the amount of liquid sucked per hour exceeds the set threshold (such as 10ml), the system will trigger an alarm to remind the nursing staff. The Bluetooth module installed in the negative pressure suction device 3 is used to achieve the data transmission function. The Bluetooth module usually connects to the control system of the negative pressure suction device 3 through a serial port (such as UART, I2C, etc.). The Bluetooth module packs the data and transmits it to a remote device (such as a medical staff's mobile phone, tablet, or the hospital's medical monitoring system) via Bluetooth;

[0043] Then when the dressing 302 needs to be replaced, first use the motor A501 to drive the rotating frame 5 to rotate to an appropriate angle, then rotate the threaded rod 502 so that the threaded rod 502 drives the sliding seat 503 to move, and then use the electric push rod B504 to drive the moving frame 6 to move to an appropriate position;

[0044] Then, one end of the dressing 302 is clamped by two dressing clips 704. Then, the motor B 801 drives the transmission rod 802 to rotate, causing the transmission rod 802 to drive the worm sleeve 705 to rotate. At this time, the worm sleeve 705 drives the worm wheel 706 to rotate, causing the worm wheel 706 to drive the connected dressing winding rod 703 to rotate slowly and evenly. At this time, the transmission rod 802 drives the driving wheel 804 connected by the universal joint 803 to rotate, causing the driving wheel 804 to drive the driven wheel 601 to rotate. At this time, the driven wheel 601 drives the connected concave-convex disc 602 to rotate. Then, the concave-convex disc 602 cooperates with the spring 702, causing the movable frame 701 connected by the contact block 707 to move rapidly back and forth, thereby driving the dressing 302 to generate slight vibrations. This kind of vibration helps to reduce the adhesion between the dressing 302 and the wound, making it not easy to strain the wound tissue when removing it.

[0045] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A wound surface negative pressure suction instrument with precise metering function, comprising a fixing seat (1), characterized in that: A mounting frame (2) is rotatably connected to one side of the fixed seat (1), a negative pressure suction device (3) is placed on the mounting frame (2), a footrest (4) is slidably provided on the other side of the fixed seat (1), a rotating frame (5) is rotatably connected to the top of the fixed seat (1), a mobile frame (6) is provided on one side of the rotating frame (5), a dressing replacement mechanism (7) is slidably provided inside the mobile frame (6), and a transmission mechanism (8) is fixedly connected to the top of the mobile frame (6).

2. A wound surface negative pressure suction instrument with precise metering function according to claim 1, characterized in that: The fixing seat (1) is fixedly connected to a toe rubber sleeve (101) located on one side of the footrest board (4), an electric push rod A (102) is fixedly connected inside the fixing seat (1), an output end of the electric push rod A (102) is fixedly connected to an adjustment block (401) fixedly connected to one side of the footrest board (4), and a rubber pad (402) is fixedly connected to the footrest board (4).

3. The wound surface negative pressure suction instrument with accurate metering function according to claim 1, characterized in that: A tension spring A (201) is fixedly connected to the bottom end of the mounting frame (2), and the other end of the tension spring A (201) is fixedly connected to the fixing seat (1). Clamps (202) are provided on both sides of the bottom end of the mounting frame (2), and two sliders (204) are fixedly connected to the lower side of the clamp (202). The sliders (204) are slidably matched with the inner wall of the mounting frame (2). A tension spring B (203) is fixedly connected to one side of the slider (204), and the other end of the tension spring B (203) is fixedly connected to the inner wall of the mounting frame (2), and the clamp (202) is compatible with the outer wall of the negative pressure suction device (3).

4. The wound surface negative pressure suction instrument with accurate metering function according to claim 1, characterized in that: The bottom end of the negative pressure suction device (3) is connected to a suction tube (301), the other end of the suction tube (301) is fixedly connected to a dressing (302), a Bluetooth module is installed in the negative pressure suction device (3), and a weighing instrument is installed in the negative pressure suction device (3).

5. The wound surface negative pressure suction instrument with accurate metering function according to claim 1, characterized in that: A motor A (501) is fixedly connected to one end of the rotating frame (5) connected to the fixed seat (1); the motor A (501) is fixedly connected to the inner wall of the fixed seat (1); a threaded rod (502) is rotatably connected to the rotating frame (5); a sliding seat (503) is threadedly connected to the threaded rod (502); an electric push rod B (504) is fixedly connected to the bottom end of the sliding seat (503); and an output end of the electric push rod B (504) is fixedly connected to the moving frame (6).

6. The wound surface negative pressure suction instrument with accurate metering function according to claim 1, characterized in that: The dressing replacement mechanism (7) comprises a movable frame (701), the movable frame (701) is slidably matched with the movable frame (6), a spring (702) is fixedly connected to one side of the movable frame (701), and the other end of the spring (702) is fixedly connected to the movable frame (6), a dressing reeling rod (703) is rotatably connected to the movable frame (701), and two dressing clips (704) are symmetrically connected to the dressing reeling rod (703).

7. The wound surface negative pressure suction instrument with accurate metering function according to claim 6, characterized in that: A worm sleeve (705) is rotatably connected to one side of the top of the movable frame (701), a worm wheel (706) is fixedly connected to the top of the dressing reeling rod (703), the worm sleeve (705) and the worm wheel (706) are meshed and transmitted, and a contact block (707) is fixedly connected to the other side of the top of the movable frame (701).

8. The wound surface negative pressure suction instrument with accurate metering function according to claim 7, characterized in that: The transmission mechanism (8) comprises a motor B (801), the motor B (801) is fixedly connected to the moving frame (6), a transmission rod (802) is fixedly connected to the output end of the motor B (801), the transmission rod (802) and the worm sleeve (705) are slidably matched, the other end of the transmission rod (802) is fixedly connected to a universal joint (803), the universal joint (803) is rotatably connected to the moving frame (6), and the other end of the universal joint (803) is fixedly connected to a driving wheel (804).

9. The wound surface negative pressure suction instrument with accurate metering function according to claim 8, characterized in that: A driven wheel (601) is rotatably connected to the top of the moving frame (6), the driven wheel (601) is meshed and driven with the driving wheel (804), a concave-convex disk (602) is fixedly connected to the bottom of the driven wheel (601), and the outer wall of the concave-convex disk (602) is in sliding contact with the contact block (707).

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