Negative pressure suction system of endoscope

Abstract

The invention discloses a negative pressure suction system of an endoscope, which comprises a machine base, a double-head negative pressure pump is arranged in the machine base, the double-head negative pressure pump comprises a double-head negative pressure pump A and a double-head negative pressure pump B, the double-head negative pressure pump A is provided with a pump A air inlet and a pump A air outlet, and the double-head negative pressure pump B is provided with a pump B air inlet and a pump B air outlet; the double-head negative pressure pump A and the double-head negative pressure pump B are connected in series, and a pump A air inlet of the double-head negative pressure pump A is connected with a pump B air inlet of the double-head negative pressure pump B through a guide pipe; the machine base is further provided with a negative pressure monitoring protection bottle, the top of the negative pressure monitoring protection bottle is provided with an equipment end negative pressure input connector, a negative pressure output connector and a negative pressure measuring connector, and the equipment end negative pressure input connector, the negative pressure output connector and the negative pressure measuring connector are connected with a cavity of the negative pressure monitoring protection bottle in a communicated mode. According to the invention, the environmental interference in the operation can be reduced, the silencing and shockproof effects are improved, meanwhile, the safety protection is carried out on the negative pressure drainage, and the safe negative pressure is monitored in real time.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a negative pressure suction system of a pressure-controlled endoscope. Background Art

[0002] Urinary stones are common and frequently occurring diseases in urology. With the continuous development of endoscopic technology, the continuous improvement of lithotripsy equipment and stone removal tools, endoscopic laser lithotripsy is currently mainly used to treat kidney stones. When performing endoscopic lithotripsy, a suction process is required. First, the saline in the flushing container 12 is used to flush the abdominal cavity through the endoscope 13, and the double-headed negative pressure pump draws the flushing liquid (waste liquid) into the waste liquid collection container through the guide sheath 14. During the suction process, the operation of the pump body will generate noise and vibration, which will cause interference with the instrument. At present, there is no real-time monitoring of the negative pressure, which can easily lead to deviations in the flow rate, increase surgical risks, and affect the treatment effect, which needs to be improved. Summary of the invention

[0003] In order to solve the problems existing in the prior art, the purpose of the present invention is to provide a negative pressure suction system for an endoscope, which takes safety protection measures for the negative pressure drainage process and monitors the negative pressure in real time; at the same time, during the waste liquid suction process, the noise and vibration generated by the negative pressure pump during operation are reduced, thereby improving the treatment effect.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A negative pressure suction system for an endoscope comprises a machine base, wherein a double-head negative pressure pump is arranged in the machine base, the double-head negative pressure pump comprises a double-head negative pressure A pump and a double-head negative pressure B pump, the double-head negative pressure A pump is provided with an A pump air inlet and an A pump air outlet, and the double-head negative pressure B pump is provided with a B pump air inlet and a B pump air outlet; the double-head negative pressure A pump and the double-head negative pressure B pump are arranged in series, and the A pump air inlet of the double-head negative pressure A pump is connected to the B pump air inlet of the double-head negative pressure B pump through a catheter;

[0006] The base is also provided with an A silencer and a B silencer. The double-head negative pressure A pump is connected to the A silencer, and the double-head negative pressure B pump is connected to the B silencer.

[0007] A negative pressure monitoring protection bottle is also provided on the machine base, and a negative pressure input connector, a negative pressure output connector, and a negative pressure measuring connector are provided on the top of the negative pressure monitoring protection bottle. The negative pressure input connector, the negative pressure output connector, and the negative pressure measuring connector on the equipment end are interconnected with the cavity of the negative pressure monitoring protection bottle;

[0008] The negative pressure input connector at the equipment end is connected to the negative pressure suction connector through one of the conduits, and the negative pressure measuring connector is connected to the negative pressure measuring plug socket through one of the conduits.

[0009] Further, in some embodiments, the air outlet of the A pump of the double-head negative pressure A pump is connected to the A silencer through a conduit, and the air outlet of the B pump of the double-head negative pressure B pump is connected to the B silencer through a conduit;

[0010] A negative pressure suction joint is provided on the side wall of the machine base, and the negative pressure suction joint is connected to the air inlet of the A pump of the double-head negative pressure A pump through a conduit;

[0011] An A-silencer air inlet joint protruding outward is provided on the wall of the A-silencer, air leakage mesh holes are provided at both ends of the A-silencer, and sound-absorbing sponges are provided in the inner cavity of the A-silencer near both ends, and the sound-absorbing sponges are arranged close to the air leakage mesh holes; the B-silencer has the same structure as the A-silencer.

[0012] Further, in some embodiments, the A pump air outlet of the double-head negative pressure A pump is connected to the A cylinder air inlet joint of the A silencer cylinder through a conduit, and the B pump air outlet of the double-head negative pressure B pump is connected to the B cylinder air inlet joint of the B silencer cylinder through a conduit;

[0013] A three-way joint is provided between the air inlet of the double-head negative pressure A pump and the negative pressure suction joint, and the negative pressure suction joint is connected to the air inlet of the double-head negative pressure A pump through the three-way joint. A proportional valve is provided on the outside of the double-head negative pressure A pump, and the proportional valve is arranged on the machine base. A pressure measuring port and a negative pressure relief port are provided on the proportional valve; the air inlet of the double-head negative pressure A pump is connected to the pressure measuring port of the proportional valve through the three-way joint.

[0014] Further, in some embodiments, the negative pressure measuring plug socket is arranged on the machine base; a circuit board is arranged in the machine base, a pressure sensor is arranged on the circuit board, and the negative pressure measuring plug socket is conductively connected to the pressure sensor;

[0015] The negative pressure output connector is connected to the second waste liquid bottle through one of the catheters, the second waste liquid bottle is connected to the first waste liquid bottle, and the first waste liquid bottle is connected to the guide sheath through one of the catheters;

[0016] The negative pressure suction joint is arranged on the machine base, and the negative pressure suction joint is connected to the double-head negative pressure pump in the machine base;

[0017] A liquid level sensor is provided on one side of the bottom of the negative pressure monitoring protection bottle close to the machine base. The liquid level sensor is arranged adjacent to the negative pressure monitoring protection bottle, and the liquid level sensor is fixedly arranged on the outer shell wall of the machine base.

[0018] Further, in some embodiments, the negative pressure output inlet on the negative pressure output connector is arranged at the bottom of the negative pressure monitoring protection bottle cavity;

[0019] The negative pressure monitoring protection bottle is arranged on the outer side of the rear wall of the machine base;

[0020] The negative pressure input connector, negative pressure output connector, and negative pressure measuring connector at the equipment end are independently and separately arranged on the top of the negative pressure monitoring protection bottle;

[0021] The negative pressure input connector at the equipment end and the negative pressure measuring connector are symmetrically coaxially and reversely arranged on the top of the negative pressure monitoring protection bottle;

[0022] The top of the first waste liquid bottle is provided with a patient-side negative pressure pipe joint and a drainage joint separated by a certain interval, and the top of the second waste liquid bottle is provided with a negative pressure transmission joint and a negative pressure suction joint separated by a certain interval, and the patient-side negative pressure pipe joint is connected to the guide sheath through one of the catheters;

[0023] A one-way valve is provided on the patient-end negative pressure pipe joint located at the bottom end of the first waste liquid bottle cavity; the discharge joint on the first waste liquid bottle is connected to the negative pressure transmission joint on the patient-end negative pressure pipe joint through one of the catheters, and the negative pressure suction joint on the second waste liquid bottle is connected to the negative pressure output joint on the negative pressure monitoring protection bottle through one of the catheters.

[0024] Further, in some embodiments, one end of the three-way joint is connected to the negative pressure suction joint through a catheter, the other end of the three-way joint is connected to the A pump air inlet of the double-head negative pressure A pump through a catheter, and the remaining end of the three-way joint is connected to the pressure measuring port of the proportional valve through a catheter; the negative pressure suction joint, the A pump air inlet of the double-head negative pressure A pump and the pressure measuring port of the proportional valve are interconnected through the three-way joint;

[0025] A mounting seat is provided on the machine base, and shock-absorbing columns are provided at the four corners of the bottom end of the mounting seat, and the mounting seat is arranged on the machine base through the shock-absorbing columns;

[0026] The double-head negative pressure pump is arranged in the mounting seat, and the double-head negative pressure pump is arranged on the machine base through the mounting seat.

[0027] The present invention is used for pyelolithotomy surgery, and adopts a double-headed negative pressure pump. The double-headed negative pressure pump is divided into two pumps, namely, a double-headed negative pressure A pump and a double-headed negative pressure B pump. The two pumps work simultaneously, but the double-headed negative pressure pump has only one air inlet (the air inlet of the A pump), and the air inlet of the A pump is connected to the air inlet of the B pump through a catheter; but the double-headed negative pressure pump has two separate air outlets, namely, the air outlet of the A pump and the air outlet of the B pump. The two separate air outlets of the A pump outlet and the B pump outlet are connected to the A silencer and the B silencer, respectively, and the negative pressure exhaust is directly separated and silenced by two independent A silencers and B silencers, which can reduce the environmental interference during the operation and improve the silencer and shockproof effects.

[0028] The present invention provides safety protection for negative pressure drainage. The negative pressure monitoring protection bottle is connected to a pressure sensor to measure pressure and monitor the safe negative pressure in real time. The liquid bottle is connected to a double-head negative pressure pump to automatically discharge waste liquid. The liquid level sensor measures the water level and sets the dangerous water level. When waste liquid enters the negative pressure monitoring protection bottle, the double-head negative pressure pump automatically stops to avoid water ingress and damage to the equipment. The present invention reduces surgical risks and enhances treatment effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1A schematic diagram of the use of an embodiment of the present invention;

[0030] Figure 2 A schematic diagram of a pipeline according to an embodiment of the present invention;

[0031] Figure 3 It is a structural schematic diagram of an embodiment of the present invention;

[0032] Figure 4 The cross-sectional structure of the negative pressure monitoring protection bottle part of the embodiment of the present invention;

[0033] Figure 5 This is a schematic structural diagram of the waste liquid bottle part of an embodiment of the present invention;

[0034] Figure 6 It is a structural schematic diagram of the base part of an embodiment of the present invention;

[0035] Figure 7 It is an exploded schematic diagram of the base part of an embodiment of the present invention;

[0036] Figure 8 It is a cross-sectional structural diagram of the silencer part of an embodiment of the present invention;

[0037] Fig. 9 Schematic diagram of the pipeline connection of the double-head negative pressure pump part of the embodiment of the present invention. DETAILED DESCRIPTION

[0038] In order to further understand the features, technical means and specific objectives and functions achieved by the present invention, and analyze the advantages and spirit of the present invention, a further understanding is obtained through the following detailed description of the present invention in combination with the accompanying drawings and specific implementation methods.

[0039] Please refer to the accompanying drawings. The present invention includes a base 11, in which a double-headed negative pressure pump 40 is arranged. The double-headed negative pressure pump 40 includes a double-headed negative pressure A pump 41 and a double-headed negative pressure B pump 42. The double-headed negative pressure A pump 41 is provided with an A pump air inlet 43 and an A pump air outlet 44, and the double-headed negative pressure B pump 42 is provided with a B pump air inlet 45 and a B pump air outlet 46; the double-headed negative pressure A pump 41 and the double-headed negative pressure B pump 42 are arranged in series, and the A pump air inlet 43 of the double-headed negative pressure A pump 41 is connected to the B pump air inlet 45 of the double-headed negative pressure B pump 42 through a conduit 30.

[0040] A negative pressure suction connector 32 is provided on the side wall of the machine base 11 , and the negative pressure suction connector 32 is connected to the A pump air inlet 43 of the double-head negative pressure A pump 41 through the conduit 30 .

[0041] Furthermore, in some embodiments, an A silencer 37 and a B silencer 38 are also provided in the base 11, and an A silencer air inlet joint 48 protruding outward is provided on the wall of the A silencer 37, and air leakage mesh holes 39 (a plurality of air leakage holes) are provided at both ends of the A silencer 37, and sound-absorbing sponges 47 are respectively provided near both ends in the inner cavity of the A silencer 37, and the sound-absorbing sponges 47 are arranged closely to the air leakage mesh holes 39; the B silencer 38 has the same structure as the A silencer 37.

[0042] Both ends of the A silencer 37 and the B silencer 38 are provided with air leakage mesh holes 39. When negative pressure air is discharged from the plurality of air leakage holes at both ends, the sound will be weakened and the noise will be reduced.

[0043] The double-headed negative pressure pump 40 is divided into two pumps, namely a double-headed negative pressure A pump 41 and a double-headed negative pressure B pump 42. The two pumps work simultaneously, but the double-headed negative pressure pump 40 has only one air inlet (A pump air inlet 43). The A pump air inlet 43 is connected to the B pump air inlet 45 through a conduit 30. However, the double-headed negative pressure pump 40 has two separate air outlets, namely an A pump air outlet 44 and a B pump air outlet 46. The two separate air outlets can reduce the air pressure sound, weaken the air pressure sound, and perform silencing.

[0044] The A pump air outlet 44 of the double-head negative pressure A pump 41 is connected to the A cylinder air inlet joint 48 of the A silencer cylinder 37 through the conduit 30, and the B pump air outlet 46 of the double-head negative pressure B pump 42 is connected to the B cylinder air inlet joint 49 of the B silencer cylinder 38 through the conduit 30.

[0045] Further, in some embodiments, a three-way joint 33 is provided between the A pump air inlet 43 of the double-head negative pressure A pump 41 and the negative pressure suction joint 32, and the negative pressure suction joint 32 is connected to the A pump air inlet 43 of the double-head negative pressure A pump 41 through the three-way joint 33. A proportional valve 34 is provided on the outside of the double-head negative pressure A pump 41, and the proportional valve 34 is arranged on the machine base 11. The proportional valve 34 is provided with a pressure measuring port 35 and a negative pressure relief port 36; the A pump air inlet 43 of the double-head negative pressure A pump 41 is connected to the pressure measuring port 35 of the proportional valve 34 through the three-way joint 33.

[0046] After the negative pressure is introduced into the negative pressure suction joint 32 , the negative pressure will pass through the three-way joint 33 , and then connect the proportional valve 34 and the double-head negative pressure pump 40 through the three-way joint 33 .

[0047] One end of the three-way joint 33 is connected to the negative pressure suction joint 32 through the catheter 30, the other end of the three-way joint 33 is connected to the A pump air inlet 43 of the double-head negative pressure A pump 41 through the catheter 30, and the remaining end of the three-way joint 33 is connected to the pressure measuring port 35 of the proportional valve 34 through the catheter 30; the negative pressure suction joint 32, the A pump air inlet 43 of the double-head negative pressure A pump 41 and the pressure measuring port 35 of the proportional valve 34 are interconnected through the three-way joint 33.

[0048] The proportional valve 34 is provided with a negative pressure relief port 36, and the proportional valve 34 is used to control the pressure. When the negative pressure is high, the negative pressure relief port 36 of the proportional valve 34 will open a little to release the pressure; when the negative pressure does not exceed the set value, the negative pressure relief port 36 of the proportional valve 34 will close; the pressure of the negative pressure is controlled by controlling the switch of the proportional valve 34.

[0049] The pressure measuring port 35 of the proportional valve 34 is connected to the air inlet of the double-head negative pressure pump 40. When the negative pressure is detected to be too high, the negative pressure relief port 36 of the proportional valve 34 is opened to relieve pressure.

[0050] The negative pressure input connector 56 at the device end is connected to the negative pressure suction plug 31 through a negative pressure conduit, and the negative pressure suction plug 31 is inserted into the negative pressure suction connector 32 .

[0051] The guide sheath 14 is connected to a double-head negative pressure pump 40, which generates negative pressure suction to suck gravel and waste liquid at the tip of the guide sheath 14; a first waste liquid bottle 21 and a second waste liquid bottle 22 are provided between the guide sheath 14 and the double-head negative pressure pump 40, and the waste liquid is sucked into the first waste liquid bottle 21 and the second waste liquid bottle 22.

[0052] A mounting seat 51 is provided on the machine base 11, and shock-absorbing columns 52 are provided at the four corners of the bottom end of the mounting seat 51. The mounting seat 51 is arranged on the machine base 11 through the shock-absorbing columns 52, and the double-headed negative pressure pump 40 is arranged in the mounting seat 51. The double-headed negative pressure pump 40 is arranged on the machine base 11 through the mounting seat 51.

[0053] The two separate air outlets, A pump air outlet 44 and B pump air outlet 46, are connected to A silencer 37 and B silencer 38 respectively, and the negative pressure air is directly separated and silenced by two independent A silencer 37 and B silencer 38, thereby improving the silencing and shockproof effects.

[0054] During endoscopic lithotripsy surgery, the physiological saline in the flushing container 12 is used to flush the abdominal cavity through the endoscope 13, and the flushing fluid is sucked into the waste fluid bottle (the first waste fluid bottle 21, the second waste fluid bottle 22) through the guide sheath 14; during the flushing fluid (waste fluid) suction process, the second waste fluid bottle 22 is connected to the double-headed negative pressure pump 40, and the double-headed negative pressure pump 40 generates negative pressure suction, and the lithotripsy and waste fluid are sucked at the tip of the guide sheath 14 to complete the surgery.

[0055] A negative pressure monitoring protection bottle 53 is provided on the machine base 11, and a device-end negative pressure input connector 56, a negative pressure output connector 57, and a negative pressure measuring connector 58 are provided on the top of the negative pressure monitoring protection bottle 53. The device-end negative pressure input connector 56, the negative pressure output connector 57, and the negative pressure measuring connector 58 are interconnected with the cavity of the negative pressure monitoring protection bottle 53.

[0056] Further, in some embodiments, the negative pressure monitoring protection bottle 53 is arranged on the outer side of the rear wall of the base 11; the equipment end negative pressure input connector 56, the negative pressure output connector 57, and the negative pressure measuring connector 58 are independently and separately arranged on the top of the negative pressure monitoring protection bottle 53.

[0057] Furthermore, in some embodiments, the negative pressure input connector 56 at the device end is symmetrically coaxially and reversely arranged with the negative pressure measuring connector 58 on the top of the negative pressure monitoring protection bottle 53 .

[0058] The negative pressure input connector 56 at the equipment end is connected to the negative pressure suction connector 32 through one of the conduits 30, and the negative pressure measuring connector 58 is connected to the negative pressure measuring plug socket 55 through one of the conduits 30. The negative pressure measuring plug socket 55 is arranged on the machine base 11; a circuit board 28 is arranged in the machine base 11, and a pressure sensor 29 is arranged on the circuit board 28. The negative pressure measuring plug socket 55 is conductively connected to the pressure sensor 29.

[0059] Further, in some embodiments, the negative pressure output connector 57 is connected to the second waste liquid bottle 22 through one of the catheters 30 , the second waste liquid bottle 22 is dual-bottle-connected to the first waste liquid bottle 21 , and the first waste liquid bottle 21 is connected to the guide sheath 14 through one of the catheters 30 .

[0060] Further, in some embodiments, the negative pressure suction connector 32 is disposed on the machine base 11 , and the negative pressure suction connector 32 is connected to the double-head negative pressure pump 40 in the machine base 11 .

[0061] A liquid level sensor 54 is provided on one side of the bottom of the negative pressure monitoring protection bottle 53 close to the machine base 11 . The liquid level sensor 54 is arranged close to the negative pressure monitoring protection bottle 53 , and the liquid level sensor 54 is fixedly arranged on the outer shell wall of the machine base 11 .

[0062] See attached Figure 4 As shown, the negative pressure output inlet 59 on the negative pressure output connector 57 is arranged at the bottom of the cavity of the negative pressure monitoring protection bottle 53 .

[0063] Further, in some embodiments, see the attached Figure 5 As shown, the top of the first waste liquid bottle 21 is provided with a patient-end negative pressure pipe joint 23 and a drainage joint 24 separated by a gap, and the top of the second waste liquid bottle 22 is provided with a negative pressure transfer joint 26 and a negative pressure suction joint 27 separated by a gap. The patient-end negative pressure pipe joint 23 is connected to the guide sheath 14 through one of the catheters 30, and a one-way valve 25 is provided on the patient-end negative pressure pipe joint 23 at the bottom end of the cavity of the first waste liquid bottle 21; the drainage joint 24 on the first waste liquid bottle 21 is conductively connected to the negative pressure transfer joint 26 on the patient-end negative pressure pipe joint 23 through one of the catheters 30, and the negative pressure suction joint 27 on the second waste liquid bottle 22 is conductively connected to the negative pressure output joint 57 on the negative pressure monitoring protection bottle 53 through one of the catheters 30.

[0064] Equipment-end negative pressure pipe joint 56: connected to the equipment (machine base 11) double-head negative pressure pump 40 through the negative pressure suction joint 32.

[0065] Liquid level sensor 54: protects the machine equipment from sucking in waste liquid and causing danger; when waste liquid enters the negative pressure monitoring protection bottle 53 from the negative pressure delivery connector 57 (port), the liquid level sensor 54 will detect the liquid entering the negative pressure monitoring protection bottle 53, thereby shutting down the double-head negative pressure pump 40 to stop negative pressure suction, and there will be a prompt on the perfusion function screen.

[0066] Negative pressure monitoring protection bottle 53: The pressure measuring bottle adopts a three-way bottle, and there is a device-end negative pressure input connector 56 (port) on the top of the bottle connected to the negative pressure suction connector 32 on the device (machine base 11), a negative pressure output connector 57 (port) connected to the waste liquid collection bottle (second waste liquid bottle 22), and a negative pressure measuring connector 58 (negative pressure monitoring port) connected to the pressure sensor 29 on the circuit board 28.

[0067] The first waste liquid bottle 21: the patient-end negative pressure pipe joint 23 (interface) is connected to the guide sheath 14, the first waste liquid bottle 21 and the second waste liquid bottle 22 are connected through a catheter 30, and the patient-end negative pressure pipe joint 23 (interface) is provided with a one-way valve 25.

[0068] Negative pressure measuring connector 58 (port): It is led out from the negative pressure monitoring protection bottle 53, connected to the pressure sensor 29 on the equipment circuit board 28, and monitors the suction negative pressure in real time.

[0069] During endoscopic lithotripsy, the physiological saline in the flushing container 12 is injected into the renal pelvis through the endoscope 13, and the abdominal cavity is flushed and the stones are broken through the endoscope 13; the waste liquid in the renal pelvis is connected to the first waste liquid bottle 21 through the negative pressure connecting pipe of the guide sheath 14 with a negative pressure suction tube (catheter 30), and the guide sheath 14 draws the flushing waste liquid into the first waste liquid bottle 21; after the flushing liquid (waste liquid) is drawn into the first waste liquid bottle 21, the first waste liquid bottle 21 and the second waste liquid bottle 22 are connected through one of the catheters 30 and connected to the negative pressure suction connector 32 on the device (machine base 11) after passing through the negative pressure monitoring protection bottle 53, and the negative pressure suction is generated by the double-headed negative pressure pump 40 on the device (machine base 11), and the negative pressure suction connector 32 is connected to the double-headed negative pressure pump 40, and the stones and waste liquid are sucked at the tip of the guide sheath 14 to complete the operation.

[0070] When the second waste liquid bottle 22 is full and forgotten to be replaced, the waste liquid will be sucked into the negative pressure monitoring protection bottle 53 from the negative pressure silicone tube (catheter 30). At this time, the liquid level sensor 54 next to the negative pressure monitoring protection bottle 53 will detect that waste liquid has entered the bottle, and then the equipment will immediately stop the double-head negative pressure pump 40, suspend the perfusion and negative pressure suction functions, and there will be a prompt on the screen that the waste liquid is backflowing; at this time, you should immediately check whether the negative pressure monitoring protection bottle 53 (negative pressure monitoring buffer protection bottle) has entered waste liquid. If so, you need to replace the waste liquid immediately, and clean the accumulated water in the negative pressure silicone tube (a catheter 30) and the negative pressure monitoring protection bottle 53 before you can start it again to prevent waste liquid from being sucked into the machine from the negative pressure monitoring protection bottle 53 to damage the machine or cause danger.

[0071] The automatic waste liquid suction and safety protection device of the present invention: the pressure sensor 29 measures the pressure and monitors the safe negative pressure in real time; the liquid level sensor 54 measures the water level. When the waste liquid in the second waste liquid bottle 22 is too full, the negative pressure monitoring protection bottle 53 enters the waste liquid, and the double-head negative pressure pump 40 is shut down to avoid water ingress and damage to the equipment.

[0072] The above embodiments only express several preferred implementation modes of the present invention, and the description thereof is relatively specific and detailed. For ordinary technicians in this field, several modifications and improvements may be made without departing from the concept of the present invention, which all fall within the scope of protection of the claims attached to the present invention.

Claims

1. An endoscope negative pressure suction system, comprising: A machine base (11); characterized in that a double-headed negative pressure pump (40) is arranged in the machine base (11), and the double-headed negative pressure pump (40) comprises a double-headed negative pressure A pump (41) and a double-headed negative pressure B pump (42); the double-headed negative pressure A pump (41) is provided with an A pump air inlet (43) and an A pump air outlet (44), and the double-headed negative pressure B pump (42) is provided with a B pump air inlet (45) and a B pump air outlet (46); the double-headed negative pressure A pump (41) and the double-headed negative pressure B pump (42) are arranged in series, and the A pump air inlet (43) of the double-headed negative pressure A pump (41) is connected to the B pump air inlet (45) of the double-headed negative pressure B pump (42) through a conduit (30); An A silencer (37) and a B silencer (38) are also provided in the machine base (11); a double-head negative pressure A pump (41) is connected to the A silencer (37); and a double-head negative pressure B pump (42) is connected to the B silencer (38); A negative pressure monitoring protection bottle (53) is also provided on the machine base (11). A device-end negative pressure input connector (56), a negative pressure output connector (57), and a negative pressure measuring connector (58) are provided on the top of the negative pressure monitoring protection bottle (53). The device-end negative pressure input connector (56), the negative pressure output connector (57), and the negative pressure measuring connector (58) are interconnected with the cavity of the negative pressure monitoring protection bottle (53). The negative pressure input connector (56) at the device end is connected to the negative pressure suction connector (32) via one of the conduits (30), and the negative pressure measuring connector (58) is connected to the negative pressure measuring plug socket (55) via one of the conduits (30).

2. The negative pressure suction system for an endoscope according to claim 1, characterized in that: The A pump air outlet (44) of the double-head negative pressure A pump (41) is connected to the A silencer (37) through a conduit (30), and the B pump air outlet (46) of the double-head negative pressure B pump (42) is connected to the B silencer (38) through a conduit (30); A negative pressure suction connector (32) is provided on the side wall of the machine base (11), and the negative pressure suction connector (32) is connected to the A pump air inlet (43) of the double-head negative pressure A pump (41) through a conduit (30); The A silencer (37) has an A silencer air inlet joint (48) protruding outwardly on its wall. Both ends of the A silencer (37) are provided with air leakage mesh holes (39). Sound-absorbing sponges (47) are respectively provided in the inner cavity of the A silencer (37) near both ends. The sound-absorbing sponges (47) are arranged in close proximity to the air leakage mesh holes (39). The B silencer (38) has the same structure as the A silencer (37).

3. The negative pressure suction system for an endoscope according to claim 1, characterized in that: The A pump air outlet (44) of the double-head negative pressure A pump (41) is communicated with the A cylinder air inlet connector (48) of the A silencer cylinder (37) via a conduit (30), and the B pump air outlet (46) of the double-head negative pressure B pump (42) is communicated with the B cylinder air inlet connector (49) of the B silencer cylinder (38) via a conduit (30); A three-way joint (33) is provided between the A pump air inlet (43) of the double-head negative pressure A pump (41) and the negative pressure suction joint (32), and the negative pressure suction joint (32) is connected to the A pump air inlet (43) of the double-head negative pressure A pump (41) through the three-way joint (33); a proportional valve (34) is provided on the outer side of the double-head negative pressure A pump (41), the proportional valve (34) is arranged on the machine base (11), and a pressure measuring port (35) and a negative pressure relief port (36) are provided on the proportional valve (34); the A pump air inlet (43) of the double-head negative pressure A pump (41) is connected to the pressure measuring port (35) of the proportional valve (34) through the three-way joint (33).

4. The negative pressure suction system for an endoscope according to claim 1, characterized in that: The negative pressure measuring plug socket (55) is arranged on the machine base (11); a circuit board (28) is arranged in the machine base (11), a pressure sensor (29) is arranged on the circuit board (28), and the negative pressure measuring plug socket (55) is conductively connected to the pressure sensor (29); The negative pressure output connector (57) is connected to the second waste liquid bottle (22) via one of the conduits (30); the second waste liquid bottle (22) is connected to the first waste liquid bottle (21) via a dual-bottle conduction connection; and the first waste liquid bottle (21) is connected to the guide sheath (14) via one of the conduits (30); The negative pressure suction connector (32) is disposed on the machine base (11), and the negative pressure suction connector (32) is connected to a double-head negative pressure pump (40) in the machine base (11); A liquid level sensor (54) is provided on one side of the bottom of the negative pressure monitoring protection bottle (53) close to the machine base (11). The liquid level sensor (54) is arranged in close proximity to the negative pressure monitoring protection bottle (53). The liquid level sensor (54) is fixedly arranged on the outer shell wall of the machine base (11).

5. The negative pressure suction system for an endoscope according to claim 1, characterized in that: The negative pressure output inlet (59) on the negative pressure output connector (57) is arranged at the bottom of the cavity of the negative pressure monitoring protection bottle (53); The negative pressure monitoring protection bottle (53) is arranged on the outer side of the rear wall of the machine base (11); The negative pressure input connector (56), the negative pressure output connector (57), and the negative pressure measuring connector (58) at the equipment end are independently and separately arranged on the top of the negative pressure monitoring protection bottle (53); The negative pressure input connector (56) at the equipment end and the negative pressure measuring connector (58) are symmetrically coaxially arranged in opposite directions on the top of the negative pressure monitoring protection bottle (53); A patient-side negative pressure pipe joint (23) and a drainage joint (24) are provided at the top end of the first waste liquid bottle (21), and a negative pressure transmission joint (26) and a negative pressure suction joint (27) are provided at the top end of the second waste liquid bottle (22). The patient-side negative pressure pipe joint (23) is connected to the guide sheath (14) via one of the catheters (30); A one-way valve (25) is provided on the patient-side negative pressure pipe joint (23) at the bottom end of the cavity of the first waste liquid bottle (21); the discharge joint (24) on the first waste liquid bottle (21) is conductively connected to the negative pressure transmission joint (26) on the patient-side negative pressure pipe joint (23) via one of the conduits (30); and the negative pressure suction joint (27) on the second waste liquid bottle (22) is conductively connected to the negative pressure output joint (57) on the negative pressure monitoring protection bottle (53) via one of the conduits (30).

6. The negative pressure suction system for an endoscope according to claim 3, characterized in that: One end of the three-way joint (33) is connected to the negative pressure suction joint (32) via a conduit (30); the other end of the three-way joint (33) is connected to the A pump air inlet (43) of the double-head negative pressure A pump (41) via a conduit (30); the remaining end of the three-way joint (33) is connected to the pressure measuring port (35) of the proportional valve (34) via a conduit (30); the negative pressure suction joint (32), the A pump air inlet (43) of the double-head negative pressure A pump (41) and the pressure measuring port (35) of the proportional valve (34) are interconnected via the three-way joint (33); A mounting seat (51) is provided on the machine base (11), shock-absorbing columns (52) are provided at four corners of the bottom end of the mounting seat (51), and the mounting seat (51) is arranged on the machine base (11) via the shock-absorbing columns (52); The double-head negative pressure pump (40) is arranged in the mounting seat (51), and the double-head negative pressure pump (40) is arranged on the machine base (11) through the mounting seat (51).

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