A pinch valve structure and a negative pressure wound therapy device with the same and a method of use

Abstract

The present invention is a tube clamping valve structure and a negative pressure wound therapy device with the device and a method of use. The tube clamping valve structure includes a motor frame, which is installed inside the medical negative pressure wound therapy device and corresponds to the strip opening provided on the housing of the medical negative pressure wound therapy device; a clamp fixing part, which is fixed on the motor frame; a clamp movable part, which is slidably installed on the motor frame and cooperates with the clamp fixing part to clamp the pipeline; a reset mechanism, which is installed on the motor frame and connected to the clamp movable part, and drives the clamp movable part to move toward the clamp fixing part; a power device, which is installed on the motor frame and is connected to an eccentric piece; a control part, which is connected to the power device and controls the power device to drive the eccentric piece to rotate. The negative pressure wound therapy device is provided with the above-mentioned tube clamping valve structure. When in use, the orderly opening and closing of the control pipeline is realized by controlling the tube clamping valve structure. The present invention can realize intermittent saline flushing of the wound surface and improve the treatment effect of the wound surface.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, in particular to a pinch valve structure, a negative pressure wound therapy device with the device and a use method thereof. Background Art

[0002] The negative pressure wound therapy device is a device that provides a negative pressure source. When used together with negative pressure drainage materials, it generates a controllable negative pressure to provide a closed moist environment for the wound, and performs negative pressure drainage on the wound to promote wound healing.

[0003] The negative pressure wound therapy device is mainly composed of a negative pressure pump, pipelines and drainage bottles. The negative pressure pump provides a negative pressure source, which is connected to the dressing through pipelines. The dressing is sealed on the wound surface to perform negative pressure suction therapy on the wound.

[0004] Clinical evidence shows that in wound treatment, flushing the wound with saline solution while performing negative pressure treatment can improve the treatment effect.

[0005] However, in actual operation, it was found that long-term flushing would affect the treatment effect. Only intermittent flushing with saline solution can achieve good treatment effect. Summary of the invention

[0006] The purpose of the present invention is to provide a pinch valve structure and a negative pressure wound therapy device with the device and a method of use, which can achieve intermittent saline flushing of the wound surface and improve the treatment effect of the wound surface.

[0007] The present invention is implemented by the following technical scheme: a clamp valve structure for a medical negative pressure wound therapy device, characterized in that: it is arranged on the medical negative pressure wound therapy device 9, and is used to clamp the pipeline and control the on and off of the pipeline;

[0008] It includes

[0009] The motor frame 1 is installed inside the medical negative pressure wound therapy device 9 and corresponds to the strip opening 91 provided on the housing of the medical negative pressure wound therapy device 9. The strip opening 91 is used to accommodate the infusion pipeline;

[0010] The fixture fixing part 2 is fixedly mounted on the motor frame 1;

[0011] The clamp movable part 3 is slidably mounted on the motor frame 1 and cooperates with the clamp fixed part 2 to clamp the pipeline;

[0012] The reset mechanism is installed on the motor frame 1 and connected to the clamp movable part 3, driving the clamp movable part 3 to move toward the clamp fixed part 2;

[0013] The power device 5 is installed on the motor frame 1, and an eccentric piece 51 is connected to the power device 5. The power device 5 drives the eccentric piece to rotate and push the clamp movable part 3 to move in the opposite direction to the clamp fixed part 2;

[0014] The control member is connected to the power device 5 and controls the power device 5 to drive the eccentric member 51 to rotate according to specified requirements.

[0015] A negative pressure wound therapy device is provided with the above-mentioned pinch valve structure.

[0016] The specific steps for using the negative pressure wound therapy device in this case are as follows:

[0017] Step 1, install the infusion bag 92, the infusion bag catheter 93, the infusion bag suction cup 94, the pipette suction cup 95, the pipette 96, and the dressing 97 in order on the negative pressure wound therapy device 1; wherein, the infusion bag catheter 93 is placed in the clamping valve structure; here, the pipette suction cup 95 is connected to the negative pressure source.

[0018] Step 2, start the equipment to start the infusion bag catheter 93 to deliver dripping liquid and the suction tube 96 to form negative pressure; at the same time, control the clamping valve 2 to intermittently clamp the infusion bag catheter 93 or not clamp the infusion bag catheter 93.

[0019] Step 3: After all flushing work is completed, stop the equipment.

[0020] Compared with the previous technology, the beneficial effects of the present invention are:

[0021] 1. The added pinch valve structure can achieve intermittent flushing of the wound surface with saline, thus improving the therapeutic effect of the wound surface.

[0022] 2. The added sliding cover can seal the strip opening after the dripping pipeline is in place, preventing the dripping pipeline from falling off and pinching your hands. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 for Figure 1 Side view of

[0025] Figure 3 for Figure 2 Sectional view of AA in the middle;

[0026] Figure 4 for Figure 3 The changing state diagram;

[0027] Figure 5 This is the coordination diagram between the motor frame and the power unit;

[0028] Figure 6 It is the connection relationship diagram of the power device and the eccentric member;

[0029] Figure 7 It is a diagram of the coordination relationship between the fixture fixed part and the fixture movable part;

[0030] Figure 8 For Figure 1 A schematic diagram of the structure of a switch fixing frame and a toggle switch is added to the basis;

[0031] Fig. 9 This is an exploded view of the switch holder and toggle switch;

[0032] Fig.10 This is an overall effect diagram of the present invention installed on a medical negative pressure wound therapy device;

[0033] Fig.11 is a schematic diagram of the structure of the sliding cover;

[0034] Fig.12 It is a schematic diagram of the structure of the back side of the sliding cover;

[0035] Fig.13 It is a schematic diagram of the structure of the protective cover;

[0036] Fig.14 This is a schematic diagram of the slide cover being opened;

[0037] Fig.15 is a schematic diagram of a closed slide cover;

[0038] Fig.16 An exploded view of the present invention;

[0039] Fig.17 It is a medical negative pressure wound therapy device with a pinch valve structure.

[0040] Fig.18 This is a step diagram of Example 1 of a method for using a medical negative pressure wound therapy device;

[0041] Fig.19 This is a step diagram of Example 2 of the method for using a medical negative pressure wound therapy device;

[0042] Fig. 20 This is a step diagram of Example 3 of the method for using a medical negative pressure wound therapy device;

[0043] Fig.21 This is a schematic diagram of the flushing mode interface of a medical negative pressure wound therapy device;

[0044] Fig. 22 This is a schematic diagram of the flushing cycle interface of a medical negative pressure wound therapy device.

[0045] Explanation of reference numerals: 1 motor frame, 11 baffle, 2 fixture fixing part, 21 door frame, 22 clamping plate A, 23 guide rod, 24 limiting hole, 25 limiting block, 3 fixture movable part, 31 slider, 32 clamping plate B, 4 return spring, 5 power device, 51 eccentric piece, 511 roller, 61 switch fixing frame, 62 toggle switch, 63 limiting groove, 71 sliding cover, 72 card slot, 81 protective cover, 82 ramp, 9 medical negative pressure wound therapy instrument, 91 row opening, 92 infusion bag, 93 infusion bag catheter, 94 infusion bag suction cup, 95 pipette suction cup, 96 pipette, 97 dressing. DETAILED DESCRIPTION

[0046] The present invention is described in detail below in conjunction with the accompanying drawings:

[0047] like Figure 1-16 As shown: a clamp valve structure for a medical negative pressure wound therapy device, which is arranged on the medical negative pressure wound therapy device 9 and is used to clamp a dripping line and control the on and off of the dripping line;

[0048] It includes

[0049] The motor frame 1 is installed inside the medical negative pressure wound therapy device 9 and corresponds to the strip opening 91 provided on the housing of the medical negative pressure wound therapy device 9. The strip opening 91 is used to accommodate the insertion of the pipeline;

[0050] The fixture fixing part 2 is fixedly mounted on the motor frame 1;

[0051] The clamp movable part 3 is slidably mounted on the motor frame 1 and cooperates with the clamp fixed part 2 to clamp the pipeline;

[0052] The reset mechanism is installed on the motor frame 1 and connected to the clamp movable part 3, driving the clamp movable part to move toward the clamp fixed part 2;

[0053] The power device 5 is installed on the motor frame 1, and an eccentric piece 51 is connected to the power device 5. The power device 5 drives the eccentric piece to rotate and push the clamp movable part 3 to move in the opposite direction to the clamp fixed part 2;

[0054] The control member is connected to the power device 5 and controls the power device 5 to drive the eccentric member 51 to rotate according to specified requirements.

[0055] Furthermore, the clamp fixing part 2 is a portal frame 21 and a clamping plate A22 with a T-shaped cross-section arranged on the portal frame 21; the clamp movable part 3 is a slider 31 and a clamping plate B32 with a V-shaped cross-section arranged on the slider 31; the portal frame 21 and the slider 31 are connected to each other through a guiding mechanism, so that the slider 31 can slide relative to the portal frame 21.

[0056] Here, the power device 5 is installed on the motor frame 1, and the eccentric member 51 needs to control the movement of the slider 4. In order to give the eccentric member 51 room to move, the clamp fixing part 2 is designed to be door-shaped, so that space is formed inside to provide space for the eccentric member to move.

[0057] Furthermore, the guide mechanism includes a guide rod 23 provided on the door frame 21 and extending toward the slider 31, and a limit hole 24 provided on the slider 31 for accommodating the guide rod 23 to pass through, and a limit block 25 is provided at the end of the guide rod 23. In order to avoid the slider from deflecting when sliding and to facilitate disassembly and assembly, a guide rod type guide mechanism is adopted here.

[0058] The power device 5 is a motor, which is fixed on the motor frame 1 , and the motor output shaft is connected to the eccentric member 51 , and the eccentric member 51 is located in the portal frame 21 ; the eccentric member 51 rotates to push the slider 31 to slide.

[0059] Furthermore, a baffle 11 is provided on the motor frame 1 , the clamp movable portion 3 is located between the clamp fixed portion 2 and the baffle 11 , and the reset mechanism is a reset spring 4 arranged between the baffle 11 and the clamp movable portion 3 .

[0060] The baffle here can serve as a limit slider on the one hand, and can serve as a fixing carrier for one end of the return spring 4 on the other hand.

[0061] Furthermore, the control component includes a switch fixing frame 61, a toggle switch 62 and a circuit board, wherein the switch fixing frame 61 is arranged on the fixture fixing portion 2, the toggle switch 62 is arranged in a limit groove 63 provided in the switch fixing frame 61, and the toggle switch 62 is connected to the power device 5 via the circuit board. By adding the toggle switch, it is convenient to control the start and stop of the motor.

[0062] In addition, it also includes a sliding cover 71, which is slidably arranged on the side of the strip opening 91 of the medical negative pressure wound therapy device 9; a card slot 72 is provided on the sliding cover 71, and the card slot 72 is connected to the toggle switch 62 so that when the sliding cover 71 moves to close the opening, the toggle switch 62 starts the power device 5.

[0063] The sliding cover is added here to isolate the outside world from the clamp to prevent the operator from being accidentally injured by the clamp; in addition, through the linkage between the sliding cover and the toggle switch 62, it can be ensured that when the sliding cover is closed, the motor drives the clamp to move, and when the sliding cover is in the open state, the motor stops driving the clamp to move.

[0064] The strip opening 91 is also provided with a protective cover 81 embedded in the strip opening 91, and the upper and lower ends of the protective cover 81 are provided with transition slopes 82. This design is mainly to guide the pipeline so that when it is placed in place, the clamp itself presents an arc shape, and the trough of the clamp is between the clamp fixed part 2 and the clamp movable part 3.

[0065] The eccentric piece is an eccentric wheel, and a roller 511 is further provided at the eccentric part of the eccentric wheel, so that when the eccentric wheel rotates, the roller 511 is in rolling friction contact with the movable part 3 of the clamp.

[0066] Since the eccentric piece will contact the clamp movable part 3 for many times, in order to reduce wear, a roller 511 is additionally provided to achieve rolling friction contact between the eccentric piece and the clamp movable part 3.

[0067] A negative pressure wound therapy device is provided with the above-mentioned pinch valve structure. The usage of the negative pressure wound therapy device itself is not much different from that of the existing negative pressure wound therapy devices. The difference lies in that the pinch valve structure controls the on-off of the suction tube.

[0068] like Fig.17 As shown, the negative pressure wound therapy device 1 is connected with an infusion bag 92, an infusion bag catheter 93, an infusion bag suction cup 94, a suction tube suction cup 95, a suction tube 96, and a dressing 97. The specific connection relationship is:

[0069] The infusion bag catheter is connected to the infusion bag and the infusion tube suction cup, the infusion tube suction cup is adhered to the dressing on the wound surface, and the infusion bag catheter passes through the clamp valve structure.

[0070] The pipette is connected to a negative pressure source and a pipette suction cup, and the pipette suction cup is adhered to the dressing on the wound surface.

[0071] The liquid in the infusion bag can flow to the dressing due to gravity, and the clamp valve can clamp and release the infusion bag catheter to control the flow of the liquid; the negative pressure source provides negative pressure to absorb the liquid in the dressing.

[0072] The specific steps for using the negative pressure wound therapy device in this case are as follows:

[0073] Step 1, install the infusion bag 92, the infusion bag catheter 93, the infusion bag suction cup 94, the pipette suction cup 95, the pipette 96, and the dressing 97 in order on the negative pressure wound therapy device 1; wherein, the infusion bag catheter 93 is placed in the clamping valve structure; here, the pipette suction cup 95 is connected to the negative pressure source.

[0074] Step 2, start the equipment to start the infusion bag catheter 93 to deliver dripping liquid and the suction tube 96 to form negative pressure; at the same time, control the clamping valve 2 to intermittently clamp the infusion bag catheter 93 or not clamp the infusion bag catheter 93.

[0075] Step 3: After all flushing work is completed, stop the equipment.

[0076] There are currently three implementations of the trigger flushing mode in this case: Example 1

[0077] Trigger flushing mode S1: Fig.18As shown: There is a flushing function key on the front or side of the machine. Press it to trigger the flushing mode; enter the flushing mode interface S2, flushing mode function option S3: the interface is as follows Fig.21 , selection of negative pressure value and negative pressure working time, selection of drip volume or liquid drip time, selection of soaking time; installation of drip line S4: passing the infusion bag catheter through the clamp valve structure; triggering the machine to run S5: the start button is on the front or side of the machine, triggering the start button, the machine starts running; flushing cycle mode S5: such as Fig. 22 , negative pressure work, dripping work and immersion work are carried out in sequence; until the pause or stop button is pressed, the machine stops. Example 2

[0078] Trigger flushing mode S11: Fig.19 As shown: There is a flushing function key on the front or side of the machine, press it to trigger the flushing mode; enter the flushing mode interface S12, flushing mode function option S13; the interface is as follows Fig.21 , selection of negative pressure value and negative pressure working time, selection of drip volume or liquid drip time, selection of soaking time; installation of drip pipeline S14: pass the infusion bag catheter through the clamp valve structure; cover the clamp protection cover, determine whether the clamp protection cover is covered S15, if not, the program is forcibly stopped and the flushing mode is not run; if so, trigger the machine to run S16: start button on the front or side of the machine, trigger the start button, and the machine starts running; 90 seconds negative pressure suction S17: first run 90 seconds of negative pressure suction to evacuate the air in the dressing; drip work S18: the clamp valve structure is opened, and the liquid in the infusion bag flows to the shriveled dressing through the infusion bag catheter; flushing cycle mode S19: if Fig. 22 , negative pressure work, dripping work and immersion work are carried out in sequence; until the pause or stop button is pressed, the machine stops. Example 3

[0079] Trigger flushing mode S111: Fig. 20 As shown: There is a flushing function key on the front or side of the machine, press it to trigger the flushing mode; enter the flushing mode interface S112, flushing mode function options S113: the interface is as follows Fig.21, selection of negative pressure value and negative pressure working time, selection of drip volume or liquid drip time, selection of soaking time; installation of drip pipeline S114: pass the infusion bag catheter through the clamp valve structure; cover the clamp protection cover, determine whether to cover the clamp protection cover S115, if not, the program is forcibly stopped and the flushing mode is not run; if so, trigger the machine to run S116: start button on the front or side of the machine, trigger the start button, and the machine starts running; 90 seconds negative pressure suction S117: first run 90 seconds of negative pressure suction to evacuate the air in the dressing; drip work S118: the clamp valve structure 2 is opened, and the liquid in the infusion bag flows to the shriveled dressing through the infusion bag catheter; flushing cycle mode S119: if Fig. 22 , negative pressure operation, dripping operation and immersion operation are cycled in sequence; until the pause or stop button is pressed, it is determined whether the flushing cycle is in the dripping operation or immersion operation stage S121. If not, the machine stops running. If so, it runs negative pressure suction for 90 seconds S122 and then stops the machine to prevent the liquid in the dressing from flowing out when the medical staff removes the dressing.

[0080] The 90 seconds of negative pressure suction as mentioned above can be determined according to the working conditions of the negative pressure source, such as 60 seconds, 50 seconds, etc.

[0081] Although the present invention is illustrated and described by specific embodiments and their alternatives, it should be understood that various changes and modifications within the spirit and scope of the present invention can be implemented. Therefore, it should be understood that the present invention is not limited in any sense except by the limitations of the attached claims and their equivalents.

Claims

1. A pinch valve structure for a medical negative pressure wound therapy device, characterized in that: It is arranged on a medical negative pressure wound therapy device (9) and is used to clamp a dripping pipeline and control the on and off of the pipeline; It includes A motor frame (1) is installed inside the medical negative pressure wound therapy device (9) and corresponds to a row of openings (91) provided on the housing of the medical negative pressure wound therapy device (9), wherein the row of openings (91) is used to accommodate the insertion of pipelines; A clamp fixing portion (2) is fixedly mounted on the motor frame (1); The clamp movable part (3) is slidably mounted on the motor frame (1) and cooperates with the clamp fixed part (2) to clamp the dripping pipeline; A reset mechanism is mounted on the motor frame (1) and connected to the clamp movable portion (3), driving the clamp movable portion (3) to move towards the clamp fixed portion (2); A power device (5) is mounted on the motor frame (1), and an eccentric piece (51) is connected to the power device (5). The power device (5) drives the eccentric piece to rotate and push the movable part (3) of the clamp to move in the opposite direction toward the fixed part (2) of the clamp; A control member connected to the power device (5) to control the power device (5) to drive the eccentric member (51) to rotate according to specified requirements; The fixture fixing portion (2) is a door frame (21) and a clamping plate A (22) with a T-shaped cross section arranged on the door frame (21); the fixture movable portion (3) is a slider (31) and a clamping plate B (32) with a V-shaped cross section arranged on the slider (31); the door frame (21) and the slider (31) are connected to each other via a guide mechanism, so that the slider (31) can slide relative to the door frame (21); The control component comprises a switch fixing frame (61), a toggle switch (62) and a circuit board, wherein the switch fixing frame (61) is arranged on the fixture fixing portion (2), the toggle switch (62) is arranged in a limiting groove (63) provided in the switch fixing frame (61), and the toggle switch (62) is connected to the power device (5) via the circuit board; It also includes a sliding cover (71), the sliding cover (71) being slidably arranged on the side of the strip opening (91) of the medical negative pressure wound therapy device (9); a card slot (72) is provided on the sliding cover (71), the card slot (72) being connected to a toggle switch (62) so that when the sliding cover (71) moves to close the opening, the toggle switch (62) activates the power device (5).

2. The pinch valve structure for a medical negative pressure wound therapy device according to claim 1, characterized in that: The guide mechanism comprises a guide rod (23) arranged on the door frame (21) and extending toward the slide block (31), and a limit hole (24) formed on the slide block (31) for accommodating the guide rod (23) to pass through, and a limit block (25) is provided at the end of the guide rod (23).

3. The pinch valve structure for a medical negative pressure wound therapy device according to claim 1, characterized in that: The power device (5) is a motor, which is fixedly mounted on the motor frame (1); the motor output shaft is connected to an eccentric piece (51), and the eccentric piece (51) is located in the portal frame (21); the eccentric piece (51) rotates to push the slider (31) to slide.

4. The pinch valve structure for a medical negative pressure wound therapy device according to claim 1, characterized in that: The motor frame (1) is provided with a baffle (11), the clamp movable portion (3) is located between the clamp fixed portion (2) and the baffle (11), and the reset mechanism is a reset spring (4) arranged between the baffle (11) and the clamp movable portion (3).

5. The pinch valve structure for a medical negative pressure wound therapy device according to claim 1, characterized in that: The strip openings (91) are also provided with a protective sleeve (81) embedded in the strip openings (91), and the protective sleeve (81) is provided with transition slopes (82) at the upper and lower ends.

6. A negative pressure wound therapy device having a pinch valve structure as claimed in any one of claims 1 to 5.

7. A method for using the negative pressure wound therapy device as claimed in claim 6, characterized in that: The specific steps are as follows: Step 1, sequentially installing an infusion bag (92), an infusion bag catheter (93), an infusion bag suction cup (94), a suction tube suction cup (95), a suction tube (96), and a dressing (97) on a negative pressure wound therapy device (9); wherein the infusion bag catheter 93 is placed in the pinch valve structure; Step 2, start the equipment to start the infusion bag catheter 93 to deliver dripping liquid and the suction tube 96 to form negative pressure; at the same time, control the clamp valve to intermittently clamp the infusion bag catheter 93 or not clamp the infusion bag catheter 93; Step 3: After all flushing work is completed, stop the equipment.

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