A wall-mounted negative pressure valve device capable of longitudinal pressing

Abstract

A wall-mounted negative pressure valve device capable of longitudinal pressurization, comprising a wall-mounted interface. The wall-mounted interface is tubular, and a first stop and a second stop are arranged inside the wall-mounted interface. A sealing plug is arranged between the first stop and the second stop. A connector is arranged on the right side of a third stop inside the wall-mounted interface. A second sealing ring is arranged on the right end face of the third stop, and a third sealing ring is arranged on the left end face of the connector. A groove is arranged in the side wall of the connector, and a rotating rod is hinged in the groove through a pin shaft. An opening and a cavity are arranged in the left side wall of the groove, and a second spring and a reset rod are arranged in the cavity. A pressure adjustment knob is sleeved on the connector. For the wall-mounted negative pressure valve device capable of longitudinal pressurization of the present invention, the connecting pipe can be longitudinally pressurized through the pressure adjustment knob to ensure the sealing fit between the third sealing ring and the second sealing ring, and effectively prevent air leakage at this part.

Description

Technical Field

[0001] The present invention relates to human daily necessities, in particular to medical devices, and more particularly to a wall-mounted negative pressure valve device capable of longitudinal pressurization. Background Art

[0002] Negative pressure suction is one of the most commonly used and important intervention means for surgical patients after surgery. The purpose is to usually drain the accumulated pus, oozing blood, tissue fluid and other liquids in the tissue cavity after surgery, prevent postoperative infection, promote wound healing and disease recovery, and at the same time reduce the occurrence of absorption fever after trauma. In actual clinical work, it is necessary to keep the pressure of the negative pressure system constant, and special attention should be paid to the airtightness of the overall negative pressure device to prevent the negative pressure system from failing due to device pressure release.

[0003] In the current clinical work, the applicant has found that the wall-mounted negative pressure suction connection valve is one of the most vulnerable parts to air leakage in the system. In the prior art, the wall-mounted negative pressure suction connection valve of the hospital central negative pressure suction device is a marble lock-fixed structure. The disadvantages of this structure are: during long-term use, it is easy to cause the fixation between the wall interface and the connector to be unreliable, loosen the rubber ring inside the connector and the wall interface, and cause air leakage at the interface. In addition, the rubber ring inside the current connector and the wall interface is a structure in which "metal - rubber ring" is fitted. The long-term pressure at the metal end is likely to cause a certain degree of deformation of the rubber ring, aggravating the air leakage phenomenon at the interface. This phenomenon will directly cause serious consequences, shorten the service life of the equipment, and increase the hospital's expenditure cost. Summary of the Invention

[0004] The purpose of the present invention is to provide a wall-mounted negative pressure valve device capable of longitudinal pressurization, and the wall-mounted negative pressure valve device capable of longitudinal pressurization of the present invention is to solve the technical problems of easy air leakage and short service life at the connector and the wall interface of the wall-mounted negative pressure valve device in the prior art.

[0005] A wall-mounted negative pressure valve device capable of longitudinal pressurization of the present invention includes a wall interface, and the wall interface is tubular.

[0006] A first stop and a second stop are arranged inside the wall interface. The second stop is located to the right of the first stop. A third stop is arranged at the left end inside the second stop. A sealing plug is arranged between the first stop and the second stop. The sealing plug includes a first spring and a support plate. The first spring is arranged on the left side of the support plate. The left end of the first spring is connected to the right end face of the first stop, and the right end of the first spring is connected to the left end face of the support plate. A push rod is vertically connected to the right side of the support plate. A first sealing ring is sleeved on the push rod. The first sealing ring is arranged between the support plate and the third stop. The right end of the push rod passes through the third stop.

[0007] A connector is disposed on the right side of the third stop of the wall-mounted interface. A second sealing ring is disposed on the right end face of the third stop. A third sealing ring is disposed on the left end face of the connector. A flow passage is axially disposed in the left end face of the connector. A top plate is disposed at the left end in the flow passage. A groove is disposed in the side wall of the connector. A rotating rod is hinged in the groove through a pin shaft. The pin shaft is located at the upper left end of the groove. An opening and an inner cavity are disposed in the left side wall of the groove. The inner cavity communicates with the groove through the opening. A second spring and a reset rod are disposed in the inner cavity. The second spring is disposed on the left side of the reset rod. The right end of the reset rod passes through the opening. The second spring biases the reset rod to the right. A position indicating mark is disposed on the outer wall of the right end of the connector. The position indicating mark and the rotating rod are on the same side of the connector and the centers of the position indicating mark and the rotating rod are in the same longitudinal section of the connector. A pressure regulating knob is sleeved on the connector. The pressure regulating knob and the connector form a sliding pair parallel to the axial direction of the connector. External threads are disposed on the outer circumferential surface of the pressure regulating knob. Internal threads are disposed on the inner circumferential surface of the wall-mounted interface and are in fit connection with the external threads.

[0008] Further, a boss is disposed at the right end of the pressure regulating knob.

[0009] Further, both the push rod and the top plate are cross-shaped.

[0010] Further, the position indicating mark is triangular.

[0011] Compared with the prior art, the effects of the present invention are positive and obvious. A wall-mounted negative pressure valve device capable of longitudinally applying pressure according to the present invention can longitudinally apply pressure to a connecting pipe through a pressure regulating knob to ensure sealing and fitting between the third sealing ring and the second sealing ring, and can effectively prevent air leakage at this part. In addition, we design the original "metal-rubber ring" structure between the connector and the wall-mounted interface into a "rubber-rubber" structure. The longitudinal pressure given by the device can make the rubber at the two parts fit closely. That is, the third sealing ring and the second sealing ring can fit closely. At the same time, during the pressurizing process, the elasticity of the rubber can produce a buffering effect, which can effectively avoid damage to the rubber ring and delay its aging. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic cross-sectional structure view of a wall-mounted negative pressure valve device capable of longitudinally applying pressure according to the present invention.

[0013] Figure 2 is a schematic top view structure view of a sealing plug in a wall-mounted negative pressure valve device capable of longitudinally applying pressure according to the present invention.

[0014] Figure 3 is a schematic three-dimensional structure view of a sealing plug in a wall-mounted negative pressure valve device capable of longitudinally applying pressure according to the present invention.

[0015] Figure 4 This is the first three-dimensional structural schematic diagram of the connector in a wall-mounted negative pressure valve device with longitudinal pressure applied in the present invention.

[0016] Figure 5 This is the second three-dimensional structural schematic diagram of the connector in a wall-mounted negative pressure valve device with longitudinal pressure applied in the present invention.

[0017] Figure 6 This is the sectional structural schematic diagram of the connector in a wall-mounted negative pressure valve device with longitudinal pressure applied in the present invention.

[0018] Figure 7 This is the first schematic diagram of the usage steps of the connector in a wall-mounted negative pressure valve device with longitudinal pressure applied in the present invention.

[0019] Figure 8 This is the second schematic diagram of the usage steps of the connector in a wall-mounted negative pressure valve device with longitudinal pressure applied in the present invention.

[0020] Figure 9 This is the third schematic diagram of the usage steps of the connector in a wall-mounted negative pressure valve device with longitudinal pressure applied in the present invention.

[0021] Figure 10 This is the fourth schematic diagram of the usage steps of the connector in a wall-mounted negative pressure valve device with longitudinal pressure applied in the present invention.

[0022] Figure 11 This is the fifth schematic diagram of the usage steps of the connector in a wall-mounted negative pressure valve device with longitudinal pressure applied in the present invention.

[0023] Figure 12 This is the sixth schematic diagram of the usage steps of the connector in a wall-mounted negative pressure valve device with longitudinal pressure applied in the present invention.

[0024] Figure 13 This is the seventh schematic diagram of the usage steps of the connector in a wall-mounted negative pressure valve device with longitudinal pressure applied in the present invention. Detailed implementation manners

[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. However, the present invention is not limited to these embodiments. Any similar structures and their similar variations of the present invention should be included in the protection scope of the present invention. The use of directions such as up, down, front, back, left, and right in the present invention is only for convenience of description and does not limit the technical solutions of the present invention.

[0026] Embodiment 1

[0027] As Figures 1 - 13As shown, a wall-mounted negative pressure valve device capable of longitudinal pressurization according to the present invention includes a wall-mounted interface 1, and the wall-mounted interface 1 is tubular.

[0028] A first stop 2 and a second stop 3 are arranged in the wall-mounted interface 1. The second stop 3 is located to the right of the first stop 2. A third stop 4 is arranged at the left end inside the second stop 3. A sealing plug 5 is arranged between the first stop 2 and the second stop 3. The sealing plug 5 includes a first spring 6 and a support plate 7. The first spring 6 is arranged on the left side of the support plate 7. The left end of the first spring 6 is connected to the right end face of the first stop 2, and the right end of the first spring 6 is connected to the left end face of the support plate 7. A push rod 8 is vertically connected to the right side of the support plate 7. A first sealing ring 9 is sleeved on the push rod 8. The first sealing ring 9 is arranged between the support plate 7 and the third stop 4. The right end of the push rod 8 passes through the third stop 4.

[0029] A connector 10 is arranged to the right of the third stop 4 inside the wall-mounted interface 1. A second sealing ring 11 is arranged on the right end face of the third stop 4. A third sealing ring 12 is arranged on the left end face of the connector 10. A flow channel 13 is arranged axially in the left end face of the connector 10. A top plate 14 is arranged at the left end inside the flow channel 13. A groove 15 is arranged in the side wall of the connector 10. A rotating rod 20 is hinged in the groove 15 through a pin shaft 16. The pin shaft 16 is located at the upper left end of the groove 15. An opening and an inner cavity 17 are arranged in the left side wall of the groove 15. The inner cavity 17 is communicated with the groove 15 through the opening. A second spring 18 and a reset rod 19 are arranged in the inner cavity 17. The second spring 18 is arranged on the left side of the reset rod 19. The right end of the reset rod 19 passes through the opening. The second spring 18 biases the reset rod 19 to the right. A position indicating mark 21 is arranged on the outer wall of the right end of the connector 10. The position indicating mark 21 and the rotating rod 20 are on the same side of the connector 10 and the centers of the position indicating mark 21 and the rotating rod 20 are in the same longitudinal section of the connector 10. A pressure adjustment knob 22 is sleeved on the connector 10. The pressure adjustment knob 22 and the connector 10 form a sliding pair parallel to the axial direction of the connector 10. External threads 23 are arranged on the outer circumferential surface of the pressure adjustment knob 22, and internal threads 24 matching the external threads 23 are arranged on the inner circumferential surface of the wall-mounted interface 1.

[0030] Further, a boss 25 is arranged at the right end of the pressure adjustment knob 22.

[0031] Further, both the push rod 8 and the top plate 14 are cross-shaped.

[0032] Further, the position indicating mark 21 is triangular.

[0033] Specifically, the wall-mounted interface 1 is a central negative pressure branch interface fixed on the wall. The left side of the wall-mounted interface 1 is connected to the central negative pressure system 26. The right end of the connector 10 is connected to a negative pressure gauge and then connected to the drainage bottle and the human body.

[0034] The internal thread 24 of the wall-mounted interface 1 is coupled with the external thread 23 of the pressure adjustment knob 22, providing important support for the knob to function.

[0035] The rotating rod 20 can freely rotate around the pin shaft 16; and in the working state, it is the supporting part of the pressure adjustment knob 22, ensuring that a continuously increasing longitudinal pressure can be obtained as the pressure adjustment knob 22 is screwed in, so as to meet the minimum pressure requirement for the second sealing ring 11 and the third sealing ring 12 to fit tightly and not leak air.

[0036] The triangular position indicator 21 on the connector 10 is used to determine the position of the rotating rod 20.

[0037] The support plate 7 and the push rod 8 are connected into a T-shaped structure. As Figure 1 shown, in the non-working state, the sealing plug 5 squeezes the first sealing ring 9 under the push of the first spring 6, playing a sealing role to prevent the pipeline of the central negative pressure system 26 from communicating with the outside in the non-working state.

[0038] Specifically, the central negative pressure system 26 in this embodiment and the like all adopt well-known solutions in the prior art, which are already understood by those skilled in the art and will not be elaborated here.

[0039] The working process of this embodiment: When installing the device, first rotate the connector 10 so that the triangular position indicator 21 faces downwards, that is, the rotating rod 20 also faces downwards. Insert the connector 10 into the pressure adjustment knob 22. When the position of the rotating rod 20 exceeds the left end of the pressure adjustment knob 22, the right end of the rotating rod 20 drops by gravity and makes the rotating rod 20 perpendicular to the axial direction of the connector 10. Then screw in the pressure adjustment knob 22 so that its left end abuts against the rotating rod 20 and drives the connector 10 to move continuously to the left, making the third sealing ring 12 and the second sealing ring 11 fit. Continue to tighten the pressure adjustment knob 22. On the one hand, make the third sealing ring 12 tightly and hermetically fit with the second sealing ring 11 without air leakage. On the other hand, make the top plate 14 push the push rod 8, pushing the sealing plug 5 to move to the left, making the central negative pressure system 26 communicate with the flow channel 13, and turning on the negative pressure suction device.

[0040] When disassembling the device, first unscrew the pressure regulating knob 22. The first spring 6 drives the sealing plug 5 to move rightward, pressing the first sealing ring 9 tightly, thus closing the negative pressure suction device. After the left end of the pressure regulating knob 22 moves to the right side of the groove 15, rotate the connector 10 to make the triangular position indicator 21 face upward. The rotating rod 20 is rotated to the upper side of the connector 10. The second spring 18 causes the reset rod 19 to eject. The reset rod 19 pushes the rotating rod 20. The rotating rod 20 can no longer be perpendicular to the axial direction of the connector 10. The right end of the rotating rod 20 drops by gravity and the rotating rod 20 falls back into the groove 15. Then the connector 10 can be smoothly taken out from the pressure regulating knob 22 to the right.

[0041] A wall-mounted negative pressure valve device capable of longitudinal pressurization according to the present invention can longitudinally pressurize the connecting pipe through the pressure regulating knob 22 to ensure that the third sealing ring 12 and the second sealing ring 11 are tightly sealed together, effectively preventing air leakage at this part. In addition, we design the original "metal - rubber ring" structure between the connector 10 and the wall interface 1 into a "rubber - rubber" structure. The longitudinal pressure given by the device can make the rubber at the two parts fit tightly. That is, the third sealing ring 12 and the second sealing ring 11 can fit tightly. At the same time, during the pressurization process, the elasticity of the rubber can produce a buffering effect, effectively avoiding damage to the rubber ring and delaying its aging.

Claims

1. A wall - type negative - pressure valve device capable of longitudinal pressure, characterized in that: It includes a wall - type interface (1). The wall - type interface (1) is tubular. A first stop (2) and a second stop (3) are arranged in the wall - type interface (1). The second stop (3) is located to the right of the first stop (2). A third stop (4) is arranged at the left - end inside the second stop (3). A sealing plug (5) is arranged between the first stop (2) and the second stop (3). The sealing plug (5) includes a first spring (6) and a support plate (7). The first spring (6) is arranged on the left side of the support plate (7). The left end of the first spring (6) is connected to the right end - face of the first stop (2), and the right end of the first spring (6) is connected to the left end - face of the support plate (7). A push rod (8) is vertically connected to the right side of the support plate (7). A first sealing ring (9) is sleeved on the push rod (8). The first sealing ring (9) is arranged between the support plate (7) and the third stop (4). The right end of the push rod (8) passes through the third stop (4). A connector (10) is arranged to the right of the third stop (4) inside the wall - type interface (1). A second sealing ring (11) is arranged on the right - end face of the third stop (4). A third sealing ring (12) is arranged on the left - end face of the connector (10). A flow channel (13) is arranged axially in the left - end of the left - end face of the connector (10). A top plate (14) is arranged at the left - end inside the flow channel (13). A groove (15) is arranged in the side - wall of the connector (10). A rotating rod (20) is hinged in the groove (15) through a pin shaft (16). The pin shaft (16) is located at the upper - left end of the groove (15). An opening and a cavity (17) are arranged in the left - side wall of the groove (15). The cavity (17) is communicated with the groove (15) through the opening. A second spring (18) and a reset rod (19) are arranged in the cavity (17). The second spring (18) is arranged on the left side of the reset rod (19). The right end of the reset rod (19) passes through the opening. The second spring (18) biases the reset rod (19) to the right. A position - indicating mark (21) is arranged on the outer - wall of the right - end of the connector (10). The position - indicating mark (21) and the rotating rod (20) are on the same side of the connector (10) and the centers of the position - indicating mark (21) and the rotating rod (20) are in the same longitudinal section of the connector (10). A pressure - regulating knob (22) is sleeved on the connector (10). The pressure - regulating knob (22) and the connector (10) form a sliding pair parallel to the axial direction of the connector (10). External threads (23) are arranged on the outer - circumferential surface of the pressure - regulating knob (22). Internal threads (24) are arranged on the inner - circumferential surface of the wall - type interface (1) and are in mating connection with the external threads (23). A boss (25) is arranged at the right - end of the pressure - regulating knob (22). Both the push rod (8) and the top plate (14) are cross - shaped. The position - indicating mark (21) is triangular.

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