Medical solid waste recovery device and medical suction system

Abstract

A medical solid matter recovery device and a medical suction system are provided. The medical solid matter recovery device includes a solid matter recovery tube installed to a water suction tube through which a liquid mixed with solid matter is circulated to a suction device disposed outside a subject, a large-diameter portion provided between a liquid inflow portion and a liquid outflow portion of the solid matter recovery tube and having an inner diameter larger than that of the water suction tube connected to the liquid inflow portion, and first and second paths formed in the large-diameter portion, the first path portion causing the liquid circulated from the liquid inflow portion to the liquid outflow portion to descend in a gravitational direction, and the second path causing the liquid to ascend in a direction opposite to the gravitational direction.

Description

TECHNICAL FIELD

[0001] The present application relates to a medical solid matter recovery device used when a liquid into which a solid matter such as a broken stone piece is mixed is suctioned, and a medical suction system. BACKGROUND

[0002] In the past, in the medical field, a surgical method of breaking a stone using an endoscope, suctioning, and recovering a broken stone piece is known.

[0003] In such a surgical method, depending on the composition, the components, and the like of a stone, a stone piece having various sedimentation characteristics or floatation characteristics is generated.

[0004] As a solid matter recovery device for recovering such a stone piece, for example, a Y-shaped strainer having an inflow portion, an outflow portion, and a filter chamber in which a cylindrical sieve is housed in a watertight manner on the inflow side, and a detachable lid is provided at an opening portion of the filter chamber is disclosed in Japanese Patent Application Publication No. 2016-87589.

[0005] Such a Y-shaped strainer is installed in a water suction tube for circulating a liquid such as physiological saline in a body cavity to a water suction pump disposed outside the body.

[0006] Further, the Y-shaped strainer captures (recovers) a stone piece mixed in a liquid suctioned by the water suction pump in the cylindrical sieve of the filter chamber. SUMMARY

[0007] A medical solid matter recovery device of one embodiment of the present application includes a tube installed in a water suction line that circulates a liquid into which a solid matter is mixed to a suction device disposed outside a subject; a liquid inflow portion provided at one end of the tube to cause the liquid to flow from the water suction line into the tube; a liquid outflow portion provided at the other end of the tube to cause the liquid to flow from the tube to the water suction line; a coarse diameter portion provided in the tube between the liquid inflow portion and the liquid outflow portion and having an inner diameter larger than that of the water suction line connected to the liquid inflow portion; a first path formed in the coarse diameter portion to cause the liquid circulating from the liquid inflow portion to the liquid outflow portion to descend in a gravitational direction; and a second path formed in the coarse diameter portion to cause the liquid circulating from the liquid inflow portion to the liquid outflow portion to ascend in a direction opposite to the gravitational direction.

[0008] A medical suction system of one embodiment of the present application includes a suction device disposed outside a subject; a water suction line that circulates a liquid into which a solid matter is mixed from the inside of the subject to the suction device; and the medical solid matter recovery device installed in the middle of the water suction line. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 is a configuration diagram of a medical system of the first embodiment of the present application.

[0010] Figure 2 is a diagram showing a relationship between an endoscope and a water feeding / sucking device of the first embodiment of the present application.

[0011] Figure 3 is a diagram for explaining a path to a kidney into which an insertion portion of an endoscope is inserted, relating to the first embodiment of the present application.

[0012] Figure 4 is a configuration diagram of a medical suction system of the first embodiment of the present application.

[0013] Figure 5 is a perspective view showing a medical solid matter recovery device of the first embodiment of the present application.

[0014] Figure 6 is an exploded perspective view showing the medical solid matter recovery device of the first embodiment of the present application.

[0015] Figure 7 is a schematic view showing a main part of the medical solid matter recovery device of the first embodiment of the present application.

[0016] Figure 8 is an explanatory diagram showing a Yurstron diagram (a diagram showing a relationship between a flow velocity of a river and a particle diameter of sediment in erosion, transportation, and deposition of the sediment) of the first embodiment of the present application.

[0017] Figure 9 is an explanatory diagram showing a behavior of a liquid inside the medical solid matter recovery device of the first embodiment of the present application.

[0018] Figure 10 is a schematic view showing a main part of a medical solid matter recovery device of a first modified example of the first embodiment of the present application.

[0019] Figure 11 is a schematic view showing a main part of a medical solid matter recovery device of a second modified example of the first embodiment of the present application.

[0020] Figure 12 is a schematic view showing a main part of a medical solid matter recovery device of a third modified example of the first embodiment of the present application.

[0021] Figure 13 is a schematic view showing a main part of a medical solid matter recovery device of a fourth modified example of the first embodiment of the present application.

[0022] Figure 14 is a explanatory view showing behavior of liquid inside the medical solid material recovery device of the fourth modification of the first embodiment of the present application.

[0023] Figure 15 is a schematic view showing a main part of the medical solid material recovery device of the fifth modification of the first embodiment of the present application.

[0024] Figure 16 is a schematic view showing a main part of the medical solid material recovery device of the sixth modification of the first embodiment of the present application.

[0025] Figure 17 is a schematic view showing a main part of the medical solid material recovery device of the seventh modification of the first embodiment of the present application.

[0026] Figure 18 is a schematic view showing a main part of the medical solid material recovery device of the eighth modification of the first embodiment of the present application.

[0027] Figure 19 is a schematic view showing a main part of the medical solid material recovery device of the ninth modification of the first embodiment of the present application.

[0028] Figure 20 is a schematic view showing a main part of the medical solid material recovery device of the tenth modification of the first embodiment of the present application.

[0029] Figure 21 is a cross-sectional view showing a main part of the medical solid material recovery device of the second embodiment of the present application.

[0030] Figure 22 is a perspective view showing a downstream side region of the upstream side pipe of the second embodiment of the present application.

[0031] Figure 23 is a cross-sectional view showing a main part of the medical solid material recovery device of the second embodiment of the present application, in which the upstream side of the solid material recovery pipe is oriented downward.

[0032] Figure 24 is a cross-sectional view showing a main part of the medical solid material recovery device of the second embodiment of the present application, in which the downstream side of the solid material recovery pipe is oriented downward.

[0033] Figure 25 is a cross-sectional view showing a main part of the medical solid material recovery device of the first modification of the second embodiment of the present application, on the upstream side and the downstream side.

[0034] Figure 26Fig. 6 is a sectional view showing a main portion of the upstream side and the downstream side of the medical solid material recovery device according to the second embodiment of the present application.

[0035] Figure 27 Fig. 7 is a sectional view showing a main portion of the upstream side and the downstream side of the medical solid material recovery device according to the third modification of the second embodiment of the present application.

[0036] Figure 28 Fig. 8 is a perspective view showing a downstream side region of the upstream side tube according to the fourth modification of the second embodiment of the present application.

[0037] Figure 29 Fig. 9 is a sectional view showing a main portion of the upstream side and the downstream side of the medical solid material recovery device according to the fifth modification of the second embodiment of the present application.

[0038] Figure 30 Fig. 10 is a sectional view showing a main portion of the upstream side and the downstream side of the medical solid material recovery device according to the sixth modification of the second embodiment of the present application.

[0039] Figure 31 Fig. 11 is a sectional view showing a main portion of the upstream side and the downstream side of the medical solid material recovery device according to the seventh modification of the second embodiment of the present application.

[0040] Figure 32 Fig. 12 is a sectional view showing a main portion of the upstream side and the downstream side of the medical solid material recovery device according to the eighth modification of the second embodiment of the present application.

[0041] Figure 33 Fig. 13 is a sectional view showing a main portion of the upstream side and the downstream side of the medical solid material recovery device according to the ninth modification of the second embodiment of the present application.

[0042] Figure 34 Fig. 14 is a sectional view showing a main portion of the upstream side and the downstream side of the medical solid material recovery device according to the tenth modification of the second embodiment of the present application.

[0043] Figure 35 Fig. 15 is a sectional view showing a main portion of the upstream side and the downstream side of the medical solid material recovery device according to the eleventh modification of the second embodiment of the present application.

[0044] Figure 36 Fig. 16 is a perspective view showing a main portion of the solid material recovery tube according to the eleventh modification of the second embodiment of the present application.

[0045] Figure 37 Fig. 17 is a sectional view showing a main portion of the upstream side and the downstream side of the medical solid material recovery device according to the twelfth modification of the second embodiment of the present application. DETAILED DESCRIPTION

[0046] Generally, a Y-shaped coarse filter installed in a water suction pipe can cause a hole of a screen to be clogged by a stone piece when the screen captures the stone piece in a liquid such as normal saline.

[0047] Further, when the hole of the screen is clogged, the water suction performance of the water suction pump can be reduced.

[0048] In addition, the solid matter recovery device such as the Y-shaped coarse filter is mostly made of metal, and thus, is heavy and difficult to handle when disposed near a patient.

[0049] According to the embodiments described below, a medical solid matter recovery device and a medical suction system which do not reduce the water suction performance and are easy to handle can be provided.

[0050] Figure 1 is a configuration diagram of a medical system of a first embodiment of the present application.

[0051] The medical system 1 is, for example, a system which performs lithotripsy and removal of a kidney stone (hereinafter, also simply referred to as a stone) in a kidney of a patient.

[0052] The medical system 1 includes an endoscope device 2, a water feeding and suction device 3, an X-ray device 4, a laser device 5, and a basket forceps 6.

[0053] The endoscope device 2 includes an endoscope 11, a main body device 12, and a monitor 13.

[0054] The endoscope 11 is, for example, a disposable endoscope.

[0055] The endoscope 11 is a flexible ureteroscope having an insertion portion 14, an operation portion 15, and a connection cable 16.

[0056] A connector (not shown) is provided at a base end portion of the connection cable 16.

[0057] The connector can be connected to the main body device 12.

[0058] The monitor 13 is connected to the main body device 12 via a cable 13a.

[0059] The insertion portion 14 has, from a distal end, a distal end portion 17, a bending portion 18, and a flexible tube portion 19.

[0060] As described later, as shown in FIG. 1, an observation window 17a, an illumination window 17b, and a treatment instrument opening 17c are provided at a distal end surface of the distal end portion 17. Figure 2

[0061] In addition, the endoscope 11 has a treatment instrument insertion passage 14a.

[0062] ​The image of the subject obtained through the observation window 17a of the front end 17 is displayed on the monitor 13.

[0063] While observing the endoscopic image of the patient's body displayed on monitor 13, the surgeon manipulates the curved lever 15a (located in the operating section 15) Figure 2 To perform the operation.

[0064] Thus, the surgeon can bend the curved part 18 while inserting the insertion part 14 into the body being examined to confirm the presence or absence of stones.

[0065] In addition, the surgical personnel can operate the various functions assigned to the operation buttons 15b in the operation unit 15. Figure 2 It can be used to perform various functions such as recording.

[0066] The water supply and suction device 3 is connected to the water supply pipe 21 and the suction pipe 22.

[0067] As described below, the water delivery and aspiration device 3 is a device for delivering saline solution to the water delivery tube 21 inserted into the instrument insertion channel 14a of the endoscope 11, and for aspirating the saline solution supplied to the subject via the water delivery tube 21 via the aspiration tube 22.

[0068] Here, the saline solution drawn by the suction tube 22 is mixed with solids such as stone fragments and gases such as air.

[0069] The X-ray device 4 includes: an X-ray tube 31, a detector 32, a main body 33, and a monitor 34.

[0070] X-ray tube 31 and detector 32 are connected to main unit 33 via cables 31a and 32a, respectively.

[0071] The monitor 34 is connected to the main unit 33 via cable 34a.

[0072] The X-ray tube 31 and detector 32 are positioned to obtain X-ray transmission images of organs such as the kidneys and ureters of the subject on the bed.

[0073] The X-rays emitted from the X-ray tube 31 pass through the subject and are received by the detector 32, and the detection signal is output to the main device 33.

[0074] The main device 33 generates an X-ray transmission image based on the detection signal and outputs the image signal of the generated X-ray transmission image to the monitor 34.

[0075] The laser device 5 has a laser fiber 41 and a main body device 42.

[0076] The laser fiber 41 has a size and shape that can be inserted into the treatment instrument insertion channel 14a of the endoscope 11.

[0077] The main device 42 has a light source (not shown) that generates laser light, and the generated laser light can pass through the laser fiber 41 and be emitted from the front end.

[0078] The basket forceps 6 is a basket type treatment instrument that has a basket 6a at the front end and a handle 6b at the base end.

[0079] A sheath 6c in which a wire for inserting the basket 6a is inserted is provided between the basket 6a and the handle 6b.

[0080] The operator can confirm the positions of the front end portion 17 of the insertion portion 14 of the endoscope 11, the front end of the water feeding tube 21, the front end of the laser fiber 41, and the like while looking at the X-ray transmission image displayed on the monitor 34, and perform various processes such as water feeding, breaking of stones based on laser light, and the like.

[0081] Figure 2 is a view that shows the connection relationship of the endoscope 11 and the water feeding and sucking device 3.

[0082] First, the structure of the endoscope 11 will be described.

[0083] A bending lever 15a is provided at the operation portion 15 of the endoscope 11.

[0084] The operator can bend the bending portion 18 in the up-down direction by operating the bending lever 15a.

[0085] This up-down direction corresponds to the up-down direction in the endoscope image displayed on the monitor 13.

[0086] Two operation buttons 15b are also provided at the operation portion 15.

[0087] Various functions that the endoscope 11 has can be assigned to each of the operation buttons 15b by the operator who is the user.

[0088] Further, a treatment instrument insertion port 15c is provided at the operation portion 15 of the endoscope 11.

[0089] The treatment instrument insertion port 15c is connected to the treatment instrument insertion channel 14a inside the insertion portion 14.

[0090] An observation window 17a, an illumination window 17b, and a treatment instrument opening 17c are provided at the front end face of the front end portion 17 of the endoscope 11.

[0091] Illumination light is emitted from the illumination window 17b.

[0092] The reflected light of the illumination light from the observation site inside the subject is incident on the observation window 17a.

[0093] Light incident to the observation window 17a is incident to an imaging surface of an imaging element (not shown) disposed at the rear side of the observation window 17a.

[0094] An imaging signal from the imaging element is supplied to the main body device 12 via a signal line inserted in the insertion portion 14, the operation portion 15, and the connection cable 16.

[0095] The treatment instrument insertion port 15c of the operation portion 15 is in communication with the treatment instrument opening 17c of the front end portion 17 via the treatment instrument insertion passage 14a.

[0096] The treatment instrument insertion port 15c is an opening for inserting a treatment instrument, and the T-shaped tube 55 can be connected thereto.

[0097] The surgical staff member can change the route of the flow of the liquid in the T-shaped tube 55 by operating the stem 55a of the T-shaped tube 55.

[0098] Further, with respect to the T-shaped tube 55, the switching of the stem 55a that controls the direction of the flow of the liquid in the T-shaped tube 55 can also be controlled in accordance with a control signal from the processor 53 described later, as indicated by the single-dot chain line.

[0099] Next, the structure of the water supply and suction device 3 will be described.

[0100] The water supply and suction device 3 has a water supply pump 51, a water suction pump 52 as a suction device, and a processor 53.

[0101] The water supply pump 51 is connected to a physiological saline bag 54 that stores physiological saline.

[0102] The water supply and suction device 3 has an operation panel not shown, and the surgical staff member can perform desired functions such as the start of water supply by operating the operation panel.

[0103] The water supply pump 51 and the water suction pump 52 are connected to the processor 53.

[0104] The water supply pump 51 and the water suction pump 52 can act under the control of the processor 53.

[0105] The proximal end portion of the water supply tube 21 is connected to the water supply pump 51. The proximal end portion of the water suction tube 22 is connected to the water suction pump 52.

[0106] Further, the pipe tool set 56 described later is installed in the middle of the water suction tube 22.

[0107] Here, in the present embodiment, the water suction pump 52 is constituted by, for example, a tube pump that sucks the liquid in the water suction tube 22 by the rotation of a rotor 52a.

[0108] The front end portion of the water feeding tube 21 is capable of being inserted into the treatment instrument insertion channel 14a from one port of the T-shaped tube 55.

[0109] The front end portion of the water suction tube 22 is capable of being connected to the other port of the T-shaped tube 55.

[0110] The remaining one port of the T-shaped tube 55 is capable of being connected to the treatment instrument insertion port 15c of the endoscope 11.

[0111] Thus, in the present embodiment, the water suction tube 22 constitutes a water suction line together with the treatment instrument insertion channel 14a.

[0112] Further, in the present embodiment, the water suction line constitutes a medical suction system together with the water suction pump 52, the tube work equipment group 56, and the like.

[0113] Further, the operator is capable of inserting the basket forceps 6 into the treatment instrument insertion channel 14a via the T-shaped tube 55 after pulling out the water feeding tube 21.

[0114] The processor 53 includes a central processing device (CPU), a ROM, a RAM, and the like.

[0115] The CPU expands and executes a prescribed control program recorded in the ROM in the RAM in accordance with an instruction inputted to an operation panel by the operator.

[0116] Thus, various functions of the water feeding and suction device 3 are realized.

[0117] For example, the processor 53 controls the water feeding pump 51 to feed physiological saline from the physiological saline bag 54 into the lumen of the water feeding tube 21.

[0118] Further, the processor 53 controls the water suction pump 52 to suction liquid in the treatment instrument insertion channel 14a via the water suction tube 22.

[0119] Figure 3 is a view for explaining a path to the kidney KD from the insertion portion 14 of the endoscope 11.

[0120] The insertion portion 14 is inserted from an unillustrated urethra.

[0121] The insertion portion 14 is capable of reaching the kidney KD by the bladder BL and the ureter UD with the front end portion of the insertion portion 14.

[0122] The kidney KD has a renal pelvis RP.

[0123] The kidney KD also has a plurality of renal calyces RC branching from the renal pelvis RP.

[0124] The renal pelvis RP has a larger space than the renal calyces RC.

[0125] The renal calyx RC is a lumen distal portion of the kidney KD.

[0126] The operator can insert the tip 17 of the insertion portion 14 of the endoscope 11 into each renal calyx RC via the renal pelvis RP while looking at the X-ray transmission image displayed on the monitor 34.

[0127] Figure 4 Fig. 6 is a view for explaining a plumbing fixture group 56 installed in the middle of the water suction pipe 22 (water suction line).

[0128] In the plumbing fixture group 56 of the present embodiment, as the plumbing fixture installed in the middle of the water suction pipe 22, there are, in order from the water suction pump 52 side which is the downstream side, a check valve 61, a pressure gauge 62, a flow meter 63, an air chamber 64, and a solid recovery device 65 which is a medical solid recovery device.

[0129] Further, the plumbing fixture group 56 can appropriately include, as the plumbing fixture, a filter device 66 such as a strainer installed in the middle of the water suction pipe 22 at a position downstream of the solid recovery device 65.

[0130] The filter device 66 is provided with a filter 66a made of a metal mesh or the like.

[0131] The filter device 66 (i.e., the filter 66a) can be disposed, for example, between the check valve 61 and the pressure gauge 62.

[0132] The check valve 61 is a valve body that allows the liquid in the water suction pipe 22 to flow from the T-shaped pipe 55 side to the water suction pump 52 side and prohibits the liquid to flow from the water suction pump 52 side to the T-shaped pipe 55 side.

[0133] The pressure gauge 62 is connected to the middle of the water suction pipe 22 via a T-shaped joint 22a.

[0134] The pressure gauge 62 detects the pressure of the liquid flowing in the water suction pipe 22.

[0135] The middle of the water suction pipe 22 is inserted in the flow meter 63.

[0136] The flow meter 63 is, for example, an ultrasonic flow meter.

[0137] The flow meter 63 measures the flow rate of the liquid flowing in the water suction pipe 22 in a non-contact state with the liquid.

[0138] The pressure and the flow rate of the liquid detected in the pressure gauge 62 and the flow meter 63 are input to the processor 53.

[0139] The processor 53 performs feedback control of the water suction pump 52, for example, based on the measured values of the pressure and the flow rate of the liquid.

[0140] Thus, the pressure and flow rate of the liquid flowing inside the water suction pipe 22 are maintained to a prescribed degree.

[0141] The air chamber 64 is connected to the middle of the water suction pipe 22 via the T-joint 22b.

[0142] The air chamber 64 is disposed, for example, toward the vertically upward side (opposite direction of the direction of gravity) with respect to the water suction pipe 22.

[0143] Thus, air is stored in the upper portion inside the air chamber 64.

[0144] The air chamber 64 absorbs the pulsation of the liquid flowing inside the water suction pipe 22 using the air stored inside the air chamber 64.

[0145] Thus, the pulsation generated in the liquid inside the water suction pipe 22 due to the water suction pump 52 is attenuated.

[0146] In addition, the air chamber 64 of the present embodiment also functions to capture air mixed into the liquid.

[0147] By providing such an air chamber 64 at a position upstream of the flow meter 63, it is possible to remove air from the liquid flowing inside the flow meter 63.

[0148] Therefore, the reduction in the measurement performance of the flow meter 63 disposed at a position downstream of the air chamber 64 is suppressed.

[0149] Furthermore, the upstream and downstream referred to herein are defined in accordance with the direction of the flow of the liquid from the distal end of the endoscope 11 toward the water suction pump 52.

[0150] That is, the distal end side of the endoscope 11 is the upstream, and the water suction pump 52 side is the downstream.

[0151] On the other hand, the air stored in the air chamber 64 increases each time air in the liquid is captured.

[0152] Furthermore, when the air stored in the air chamber 64 overflows the capacity of the air chamber 64, it can lead to a reduction in the measurement performance of the flow meter 63.

[0153] Specifically, due to the influence of the air overflowing into the liquid, the flow rate of the liquid measured by the flow meter 63 can become a value less than the actual flow rate of the liquid.

[0154] Furthermore, when a value less than the actual flow rate of the liquid is measured, the water suction pump 52 is driven earlier than necessary by the feedback control of the processor 53, and the flow rate of the liquid flowing inside the water suction pipe 22 becomes excessive.

[0155] Therefore, in order to prevent such air overflow from occurring and to improve the controllability of the suction pump 52, the air chamber 64 is connected to one end of the leakage passage 70.

[0156] The other end of the leakage passage 70 is connected to the middle of the suction pipe 22 via a T-joint 22c at a position downstream of the flow meter 63 and the pressure gauge 62.

[0157] In addition, a leakage valve 71 is installed in the middle of the leakage passage 70.

[0158] The leakage valve 71 is, for example, a normally closed solenoid valve whose opening is controlled by the processor 53.

[0159] To control the opening of the leakage valve 71, a liquid level sensor 72 is installed in the gas chamber 64.

[0160] The liquid level sensor 72 is, for example, an optical sensor that turns on when the amount of air in the air chamber 64 increases and the liquid level in the air chamber 64 is less than a set height.

[0161] The activation signal of the liquid level sensor 72 is input to the processor 53.

[0162] When the liquid level sensor 72 receives an open signal, the processor 53 causes the leakage valve 71 to open for a preset time.

[0163] As a result, a portion of the air stored in the air chamber 64 bypasses the flow meter 63 and the pressure gauge 62 and is released into the suction pipe 22 downstream of the flow meter 63 and the pressure gauge 62.

[0164] like Figures 4-7 As shown, the solids recovery device 65 includes: a solids recovery tube 75, which is installed in the middle of the suction tube 22; and a tube retainer 76, which is used to fix and hold the solids recovery tube 75 in a predetermined shape.

[0165] Solids recovery tube 75 is, for example, made of a flexible resin tube.

[0166] The solids recovery tube 75 is, for example, a disposable product.

[0167] One end of the solids recovery pipe 75 is configured to allow liquid to flow from the suction pipe 22 into the liquid inflow section 75d of the solids recovery pipe 75.

[0168] One end of the solids recovery tube 75 is connected to the middle of the suction tube 22 via a first connector 77, which serves as a connector.

[0169] That is, the first connector 77 has a stepped through hole 77a into which the solids recovery tube 75 and the suction tube 22 can be inserted.

[0170] By inserting one end of the solids recovery pipe 75 and the upstream end of the water suction pipe 22 into the through hole 77a, one end of the solids recovery pipe 75 and the middle of the water suction pipe 22 are connected in a manner that allows them to contact and separate.

[0171] In addition, the other end of the solids recovery pipe 75 is configured as a liquid outflow section 75e for allowing liquid to flow from the solids recovery pipe 75 to the suction pipe 22.

[0172] The other end of the solids recovery tube 75 is connected to the middle of the suction tube 22 via a second connector 78, which serves as a connector.

[0173] That is, the second connector 78 has a stepped through hole 78a into which the solids recovery tube 75 and the suction tube 22 can be inserted.

[0174] By inserting the other end of the solids recovery pipe 75 and the downstream end of the suction pipe 22 into the through hole 78a, the other end of the solids recovery pipe 75 is connected to the middle of the suction pipe 22 in a manner that allows them to contact and separate.

[0175] Here, the inner diameter of at least a portion of the solids recovery pipe 75 is formed to be larger than the inner diameter of the suction pipe 22 connected to the first connector 77.

[0176] In this embodiment, the inner diameter of the entire area of ​​the solids recovery pipe 75 is formed to be larger than the inner diameter of the suction pipe 22 connected to the first connector 77.

[0177] That is, the entire area of ​​the solids recovery pipe 75 in this embodiment is set to be a coarse diameter portion 75a that is larger than the inner diameter of the suction pipe 22 connected to the first connector 77.

[0178] like Figure 5 , 6 As shown, the tube retainer 76 is configured, for example, to have: a flat retainer body 76a; a cylindrical winding frame 76b protruding from the retainer body 76a; and a plurality of guide members 76c protruding from the retainer body 76a in a manner that surrounds the winding frame 76b.

[0179] These retainer bodies 76a, winding frames 76b, and guide components 76c are integrally formed, for example, by resin molding.

[0180] For example, about 3 turns of solids recovery tube 75 are wound on the winding frame 76b of the tube holder 76.

[0181] Furthermore, the solid recovery tube 75 wound on the winding frame 76b is held in the gap between the winding frame 76b and each guide member 76c.

[0182] That is, the solids recovery tube 75 is fixed to the tube holder 76 in a state of rotating 3 times around the winding frame 76b.

[0183] At this time, the solids recovery tube 75 is fixed to the tube holder 76, for example, with one end connected to the first connector 77 and the other end connected to the second connector 78 facing opposite directions.

[0184] That is, in this embodiment, the solid recovery tube 75 is fixed to the tube holder 76 in such a way that the angle between the central axis of the liquid inflow portion 75d and the central axis of the liquid outflow portion 75e is 1080 degrees.

[0185] Thus, in this embodiment, the coarse diameter portion 75a of the solids recovery pipe 75 forms a ring portion.

[0186] Here, the pre-set guide member 76c among the plurality of guide members 76c (e.g., two guide members 76c adjacent to each other) also functions as a support for erecting the tube holder 76 relative to the worktable, etc.

[0187] Furthermore, in this embodiment, the state in which the tube holder 76 is upright means, for example, that the holder body 76a is in a vertical state relative to the worktable, and the central axis of the winding frame 76b is in a horizontal state relative to the worktable.

[0188] Furthermore, by holding the tube holder 76 in an upright position, one end of the solids recovery tube 75 and the other end are configured to be horizontal relative to the ground on the upper side of the tube holder 76.

[0189] Furthermore, by holding the tube holder 76 in an upright state, a first path 75b and a second path 75c are formed in the coarse diameter portion 75a of the solid recovery tube 75 wound on the winding frame 76b.

[0190] The first path 75b is a path that causes the liquid flowing from the liquid inlet 75d to the liquid outlet 75e to descend further in the direction of gravity than in the horizontal direction.

[0191] The second path 75c is a path that causes the liquid flowing from the liquid inlet 75d to the liquid outlet 75e to rise in the opposite direction of gravity.

[0192] In addition, the pipe retainer 76 can be placed not only on a workbench, but also suspended in the middle of the pipe.

[0193] Alternatively, the tube holder 76 can also be positioned so that the surface perpendicular to the winding frame 76b ( Figure 5 It is installed in a way that is fixed to a wall, pump housing, endoscope cart, or other similar locations (such as the back side).

[0194] Here, with respect to the solid matter such as the stone pieces that can be captured by the solid matter recovery pipe 75 of the solid matter recovery device 65, a Yurston diagram (refer to Fig. 9) that represents the erosion, deposition, and transport relationships of the sand in a river is described with reference to the drawing. Figure 8

[0195] Figure 8 The Yurston diagram shown in Fig. 9 represents the liquid erosion flow rate region, the transport flow rate region, and the deposition flow rate region in the relationship with the particle diameter of the solid matter.

[0196] The erosion flow rate region corresponds to the flow rate region in the liquid flow rate region in the pipe in which the deposited solid matter starts to flow.

[0197] The transport flow rate region corresponds to the flow rate region in the liquid flow rate region in the pipe in which the solid matter flows without deposition.

[0198] The deposition flow rate region corresponds to the flow rate region in the liquid flow rate region in the pipe in which the flowing solid matter is deposited.

[0199] With reference to this Yurston diagram, the flow rate at which the solid matter such as the stone pieces of the average size (for example, in the range of 0.2 mm to 1.0 mm) that is the recovery target starts to flow is investigated.

[0200] For example, in the solid matter of the particle diameter of 0.2 mm, the flow rate that is the boundary between the transport and the deposition is 15 mm / s, and the flow rate that is the boundary between the transport and the erosion is 200 mm / s.

[0201] Therefore, in order to make the temporarily deposited solid matter flow again, the flow rate needs to be about 13.3 times.

[0202] The flow rate (average cross-sectional flow rate) that flows in the pipe is inversely proportional to the pipe cross-sectional area, and therefore, when the pipe inner diameter is 1 / 3.6 times, the temporarily deposited solid matter flows again.

[0203] In addition, in the solid matter of the particle diameter of 1.0 mm, the flow rate that is the boundary between the transport and the deposition is 60 mm / s, and the flow rate that is the boundary between the transport and the erosion is 350 mm / s.

[0204] Therefore, in order to make the temporarily deposited solid matter flow again, the flow rate needs to be about 5.8 times.

[0205] The flow rate (average cross-sectional flow rate) that flows in the pipe is inversely proportional to the pipe cross-sectional area, and therefore, when the pipe inner diameter is 1 / 2.4 times, the temporarily deposited solid matter flows again.

[0206] ​To realize these flow rate changes, it is desirable to set a substantially 2 or more times larger inner diameter ratio between the water suction pipe 22 connected to the first connector 77 and the thick diameter portion 75a of the solid recovery pipe 75.

[0207] By so setting, the following effects are obtained: the broken stone pieces of the size to be recovered are not deposited in the water suction pipe 22 on the upstream side of the solid recovery device 65, but are introduced to the solid recovery device 65 and deposited (caught) inside the solid recovery pipe 75.

[0208] Further, for example, in a case where the assumed average flow rate range of the water suction pump 52 is assumed to be 50 ml / min, the inner diameter of the solid recovery pipe 75 and the experimental results of the behavior of the broken stone pieces are, for example, as follows.

[0209] Further, the diameter of the ring of the solid recovery pipe 75 (thick diameter portion 75a) in this experiment is based on 100 mm or less.

[0210] For example, in a case where the inner diameter of the solid recovery pipe 75 is set to 4 mm, it is confirmed that, if the flow rate of the liquid becomes larger (if the average flow rate approaches 50 ml / min), a part of the stone pieces exceeds the ring and flows downstream.

[0211] Further, it is confirmed that, in the solid recovery pipe 75 of this inner diameter, the air mixed into the liquid exceeds the ring of the solid recovery pipe 75 and flows downstream.

[0212] Further, for example, in a case where the inner diameter of the solid recovery pipe 75 is set to 5 mm, it is confirmed that, even if the flow rate of the liquid becomes larger (even if the average flow rate approaches 50 ml / min), the stone pieces do not exceed the ring and flow downstream.

[0213] Further, it is confirmed that, in the solid recovery pipe 75 of this inner diameter, the air mixed into the liquid is attached to the level of the bubbles and stays.

[0214] Further, for example, in a case where the inner diameter of the solid recovery pipe 75 is set to 6 mm, it is confirmed that, even if the flow rate of the liquid becomes larger (even if the average flow rate approaches 50 ml / min), the stone pieces do not exceed the ring and flow downstream.

[0215] Further, it is confirmed that, in the solid recovery pipe 75 of this inner diameter, the air mixed into the liquid is largely stayed in the upper portion of the ring portion.

[0216] According to the above results, in the present embodiment, as an example, the inner diameter of the water suction pipe 22 connected to the first connector 77 is set to 3 mm or less, and in the case of such an example, an example in which the inner diameter of the thick diameter portion 75a of the solid recovery pipe 75 is set to 5 mm or more, preferably 6 mm or more, is cited.

[0217] Further, these inner diameters are of course appropriately changed according to the size of the stone pieces to be captured, the capacity of the water suction pump 52, and the like.

[0218] Further, the inner diameter of the water suction tube 22 connected to the second connector 78 is not particularly limited.

[0219] In the medical system 1 of such a structure, after various treatments such as delivery of a liquid such as physiological saline into the kidney KD and the like using the endoscope device 2, and laser-based lithotripsy of stones, when the water suction pump 52 is driven, the liquid such as physiological saline including stone pieces and the like is sucked from inside the body cavity (inside the kidney KD) through the treatment instrument insertion channel 14a.

[0220] When the liquid sucked from inside the body cavity flows from the water suction tube 22 into the solid recovery tube 75 of the solid recovery device 65, the flow rate of the liquid reaching the large-diameter portion 75a sharply decreases.

[0221] At this time, the effective area of the pipe sharply changes at the large-diameter portion 75a, and thus a vortex is generated inside the large-diameter portion 75a (refer to Figure 9 ).

[0222] Due to these sharp changes in the flow rate of the liquid reaching the large-diameter portion 75a and the generation of the vortex, a part of the solid 80 having a specific gravity greater than that of the liquid among the stone pieces and the like contained in the liquid precipitates and is captured into the solid recovery tube 75 (refer to Figure 7 ).

[0223] Further, when the liquid travels inside the large-diameter portion 75a, the liquid moves downward in the direction of gravity in the first path 75b.

[0224] At this time, the solid 80 having a specific gravity smaller than that of the liquid among the solid 80 contained in the liquid does not move downward in the direction of gravity and stays near the entrance of the first path 75b, and is captured into the solid recovery tube 75.

[0225] Further, when the liquid travels inside the large-diameter portion 75a, the liquid shifts from the first path 75b to the second path 75c.

[0226] At this time, the solid 80 having a specific gravity greater than that of the liquid among the solid 80 contained in the liquid does not move in the opposite direction of the direction of gravity together with the liquid, but precipitates near the boundary between the first path 75b and the second path 75c, and is captured into the solid recovery tube 75.

[0227] Thus, most of the solid 80 contained in the liquid is captured inside the solid recovery tube 75.

[0228] Further, even if a part of the solid matter 80 contained in the liquid does not get recovered in the solid matter recovery device 65 and slightly flows out from the liquid outflow portion 75e into the water suction pipe 22, the flowed-out solid matter 80 is reliably caught in the filter 66a of the filter device 66.

[0229] In this case, the amount of the stone pieces and the like of the solid matter remaining in the liquid after passing through the solid matter recovery device 65 is small.

[0230] Therefore, clogging of the mesh of the filter 66a of the filter device 66 is prevented.

[0231] According to such an embodiment, the solid matter recovery device 65 has: a solid matter recovery pipe 75 installed to the water suction pipe 22 through which the liquid mixed with the solid matter flows to the water suction pump 52 disposed outside the subject; a liquid inflow portion 75d provided to one end of the solid matter recovery pipe 75 to cause the liquid to flow from the water suction pipe 22 to the solid matter recovery pipe; a liquid outflow portion 75e provided to the other end of the solid matter recovery pipe 75 to cause the liquid to flow from the solid matter recovery pipe 75 to the water suction pipe 22; a large-diameter portion 75a provided to the solid matter recovery pipe 75 between the liquid inflow portion 75d and the liquid outflow portion 75e, the inner diameter of which is formed larger than the inner diameter of the water suction pipe 22 connected to the liquid inflow portion 75d; a first path 75b formed in the large-diameter portion 75a to cause the liquid flowing from the liquid inflow portion 75d to the liquid outflow portion 75e to descend in the direction of gravity; and a second path 75c formed in the large-diameter portion 75a to cause the liquid flowing from the liquid inflow portion 75d to the liquid outflow portion 75e to ascend in the direction opposite to the direction of gravity.

[0232] With such a structure, it is possible to provide the solid matter recovery device 65 which does not degrade the water suction performance of the water suction pump 52 and is easy to handle.

[0233] That is, the solid matter recovery device 65 of the present embodiment adopts a structure in which, after the flow rate of the liquid flowing from the water suction pipe 22 to the solid matter recovery pipe 75 is weakened, the liquid is caused to descend in the direction of gravity and to ascend in the direction opposite to the direction of gravity, whereby the stone pieces and the like of the solid matter contained in the liquid are caught.

[0234] Therefore, clogging and the like of the mesh do not occur as in the structure in which the filter such as a screen is used to catch the solid matter, and it is possible to prevent degradation of the water suction performance of the water suction pump 52.

[0235] Further, the solid matter recovery device 65 of the present embodiment adopts a structure which does not use the filter and the like, and it is possible to use a light-weight resin for the solid matter recovery pipe 75 and the pipe holder 76 and the like.

[0236] Therefore, it is possible to achieve weight reduction of the solid matter recovery device 65, and handling becomes easy.

[0237] In this case, particularly, the thick diameter portion 75a of the solid matter recovery pipe 75 includes a loop portion that guides the liquid from the liquid inflow portion 75d after the liquid has revolved (more specifically, 3 revolutions) and then to the liquid outflow portion 75e.

[0238] Therefore, the solid matter recovery pipe 75 can more reliably capture the solid matter contained in the liquid.

[0239] In addition, the solid matter recovery pipe 75 is detachable with respect to the water suction pipe 22 by the first connector 77 and the second connector 78.

[0240] Therefore, when performing a living body inspection or the like of the stone pieces or the like of the solid matter captured in the solid matter recovery pipe 75, the stone or the like of the solid matter can be easily removed from the solid matter recovery device 65.

[0241] Here, for example, as shown in Figure 10 , the solid matter recovery pipe 75 can also be configured to have the thick diameter portion 75a revolve 1 revolution.

[0242] That is, as shown in Figure 10 , the solid matter recovery pipe 75 of the modification example is fixed to describe a circular arc having an angle of 360 degrees between the central axis of the liquid inflow portion 75d and the central axis of the liquid outflow portion 75e.

[0243] In addition, for example, as shown in Figure 11 , 12 , the loop portion of the solid matter recovery pipe 75 can be fixed to describe a circular arc having 3 / 4 or more revolutions of the liquid from the liquid inflow portion 75d.

[0244] In this case, particularly, at least either one of the central axis of the liquid inflow portion 75d and the central axis of the liquid outflow portion 75e can also be fixed to be inclined with respect to the horizontal direction.

[0245] That is, as shown in Figure 11 , the solid matter recovery pipe 75 of the modification example is fixed to describe a circular arc having an angle of 315 degrees between the central axis of the liquid inflow portion 75d and the central axis of the liquid outflow portion 75e.

[0246] In addition, as shown in Figure 12 , the solid matter recovery pipe 75 of the modification example is fixed to describe a circular arc having an angle of 270 degrees between the central axis of the liquid inflow portion 75d and the central axis of the liquid outflow portion 75e.

[0247] In addition, for example, as shown in Figure 13 , 14 , the solid matter recovery pipe 75 can also be fixed to have the central axis of the liquid inflow portion 75d in the vertical direction.

[0248] That is, as shown in Figure 13, 14 The solid matter recovery pipe 75 of the modification shown is fixed so as to trace a circular arc of which the angle between the central axis of the liquid inflow portion 75d and the central axis of the liquid outflow portion 75e is 270 degrees.

[0249] Further, for example, as shown in Figure 15 The solid matter recovery pipe 75 can also be fixed so that the central axis of the liquid inflow portion 75d and the central axis of the liquid outflow portion 75e are both in the vertical direction.

[0250] That is, as shown in Figure 15 The solid matter recovery pipe 75 of the modification shown is fixed so as to trace a circular arc of which the angle between the central axis of the liquid inflow portion 75d and the central axis of the liquid outflow portion 75e is 180 degrees.

[0251] Further, for example, as shown in Figure 16 The solid matter recovery pipe 75 can also be fixed in a shape other than a ring.

[0252] That is, as shown in Figure 16 The solid matter recovery pipe 75 of the modification shown is fixed so as to trace a plurality of connected U shapes.

[0253] Further, in the modification shown in Figure 16 A gas tank 67 for absorbing pulsation of liquid is installed midway through the thick diameter portion 75a.

[0254] A stretchable wall 67a for partitioning gas and liquid is provided inside the gas tank 67.

[0255] The capacity of this gas tank 67 (the capacity of the gas region partitioned by the wall 67a) is, for example, 5 cm 3 ~ 30 cm 3 .

[0256] By so configuring, the air chamber 64 installed to the water absorption pipe 22 can also be appropriately omitted.

[0257] Further, for example, as shown in Figure 17 The solid matter recovery pipe 75 can also be configured so that a diameter expansion portion 75f is formed midway through the ring formed by the thick diameter portion 75a.

[0258] Figure 17 The diameter expansion portion 75f of the modification shown is formed in a spherical shape whose maximum inner diameter is larger than the inner diameter of the thick diameter portion 75a.

[0259] By so configuring, the flow rate of the liquid flowing through the solid matter recovery pipe 75 can be further changed, and the solid matter such as stone pieces can be more effectively captured.

[0260] As the shape of this diameter expansion portion 75f, for example, as shown in Figure 18As shown, the diameter expansion portion 75f can also be formed in a cylindrical shape.

[0261] That is, as in the embodiment shown in Figure 17 , Figure 18 , the diameter expansion portion 75f is preferably formed as a solid of revolution about the length axis of the solid recovery pipe 75.

[0262] Also, for example, as shown in Figure 19 , 20 , the diameter expansion portion 75f can also be formed at a position other than the ring portion on the solid recovery pipe 75.

[0263] Next, a second embodiment of the present application will be described with reference to Figures 21-24 .

[0264] In this embodiment, the solid recovery device 65 adopts a structure in which the inflow direction when liquid flows into the solid recovery pipe 75 from the upstream side of the water absorption pipe 22 is set to only a direction different from the direction of the central axis O2 of the solid recovery pipe 75.

[0265] In addition, the solid recovery device 65 of this embodiment adopts a structure in which the outflow direction when liquid flows out from the solid recovery pipe 75 to the downstream side of the water absorption pipe 22 is set to only a direction different from the direction of the central axis O2 of the solid recovery pipe 75.

[0266] Further, the solid recovery device 65 can adopt only at least one of the above-described structure on the inflow side and the structure on the outflow side of the liquid with respect to the solid recovery pipe 75.

[0267] Further, with respect to structures common to the above-described first embodiment, the same reference numerals are appropriately assigned and the description is omitted.

[0268] As shown in Figure 21 , the water absorption pipe 22 is divided into an upstream side pipe 22a and a downstream side pipe 22b at a middle portion.

[0269] The downstream side region 81 of the upstream side pipe 22a is inserted into the inside of the solid recovery pipe 75 via the liquid inflow portion 75d.

[0270] In this embodiment, the downstream side region 81 of the upstream side pipe 22a corresponds to a specific example of the first pipe body.

[0271] That is, the downstream side region 81 causes liquid to flow into the inside of the solid recovery pipe 75 only from a direction different from the direction of the central axis O2 of the solid recovery pipe 75.

[0272] Specifically, the downstream side region 81 of the upstream side pipe 22a penetrates the penetration hole 77a of the first connector 77, and as a result, the downstream side region 81 is inserted into the inside of the solid recovery pipe 75.

[0273] Further, in the inside of the solid-recovery pipe 75, the center axis Oi of the upstream-side pipe 22a and the center axis O2 of the solid-recovery pipe 75 are arranged substantially coaxially.

[0274] Further, in the present embodiment, "substantially coaxial" means that a prescribed error can be included in the arrangement of the center axis Oi and the center axis O2.

[0275] Further, in the inside of the solid-recovery pipe 75, a pair of rectangular holes that penetrate a wall portion of a downstream-side region 81 of the upstream-side pipe 22a are formed as first opening portions 81a (see FIG. 6) in the downstream-side region 81. Figure 22 ).

[0276] These first opening portions 81a are formed, for example, at a position that is separated by a prescribed distance d or more in the downstream direction with respect to the liquid-inflow portion 75d.

[0277] Further, the total value of the opening areas of these first opening portions 81a is set to be larger than the flow path area of the water-absorption pipe 22 (the upstream-side pipe 22a).

[0278] Further, a sealing member 81b is provided in the downstream-side region 81 of the upstream-side pipe 22a.

[0279] The sealing member 81b seals the downstream end portion of the upstream-side pipe 22a at a position that is downstream of the first opening portions 81a.

[0280] That is, the sealing member 81b seals the face that is perpendicular to the center axis Oi of the upstream-side pipe 22a at the downstream end of the downstream-side region 81.

[0281] Further, an upstream-side region 82 of the downstream-side pipe 22b is inserted into the inside of the solid-recovery pipe 75 via a liquid-outflow portion 75e.

[0282] In the present embodiment, the upstream-side region 82 of the downstream-side pipe 22b corresponds to one specific example of the second pipe body.

[0283] That is, the upstream-side region 82 causes the liquid to flow into the inside of the downstream-side pipe 22b only from a direction that is different from the direction of the center axis O2 of the solid-recovery pipe 75.

[0284] Specifically, the upstream-side region 82 of the downstream-side pipe 22b penetrates the through-hole 78a of the second connector 78, and as a result, the upstream-side region 82 is inserted into the inside of the solid-recovery pipe 75.

[0285] Further, in the inside of the solid-recovery pipe 75, the center axis Oi of the downstream-side pipe 22b and the center axis O2 of the solid-recovery pipe 75 are arranged substantially coaxially.

[0286] Further, in the inside of the solid recovery pipe 75, a pair of rectangular holes that penetrate a wall portion of the upstream side region 82 of the downstream side pipe 22b are formed as the second opening portions 82a, for example, in the upstream side region 82.

[0287] These second opening portions 82a are formed, for example, at a position that is separated by a prescribed distance d or more in the upstream side from the liquid outflow portion 75e.

[0288] Further, the total value of the opening areas of these second opening portions 82a is set to be larger than the flow path area of the water absorption pipe 22 (downstream side pipe 22b).

[0289] Further, a sealing member 82b is provided in the upstream side region 82 of the downstream side pipe 22b.

[0290] This sealing member 82b seals the upstream side end portion of the downstream side pipe 22b at a position that is upstream of the second opening portions 82a.

[0291] That is, the sealing member 82b seals the face that is perpendicular to the central axis O1 of the downstream side pipe 22b at the upstream end of the upstream side region 82.

[0292] Further, in the present embodiment, the first pipe body can also be configured by a member that is separate from the upstream side pipe 22a.

[0293] In this case, the downstream side end portion of the upstream side pipe 22a is connected to the first pipe body that is configured by the separate member.

[0294] Similarly, the second pipe body can also be configured by a member that is separate from the downstream side pipe 22b.

[0295] In this case, the upstream side end portion of the downstream side pipe 22b is connected to the second pipe body that is configured by the separate member.

[0296] In such a configuration, the liquid that flows through the upstream side pipe 22a flows into the solid recovery pipe 75 via the first opening portion 81a.

[0297] At this time, the effective area of the pipe changes sharply, and as a result, the flow rate of the liquid decreases sharply.

[0298] Further, the inflow of the liquid into the inside of the solid recovery pipe 75 is performed only from a direction that is different from the direction of the central axis O2 of the solid recovery pipe 75.

[0299] That is, the inflow of the liquid into the inside of the solid recovery pipe 75 is performed only from a direction that is different from the direction of the flow of the liquid in the inside of the solid recovery pipe 75.

[0300] Therefore, in the vicinity of the first opening portion 81a, the flow of the liquid in the inside of the solid recovery pipe 75 becomes turbulent.

[0301] Due to the rapid change in flow rate and the generation of turbulence in the liquid immediately after it flows into the solids recovery pipes 75, the solids recovery device 65 can reliably capture a portion of the solids 80, such as stone fragments, contained in the liquid, which have a higher specific gravity than the liquid, by allowing them to settle.

[0302] In addition, the liquid flowing in the solids recovery pipe 75 flows into the downstream side pipe 22b through the second opening 82a.

[0303] In this case, the liquid flows from the solids recovery pipe 75 into the downstream side pipe 22b only from a direction different from the direction of the central axis O2 of the solids recovery pipe 75.

[0304] That is, the liquid flows from the solid recovery pipe 75 into the downstream side pipe 22b only from a direction different from the flow direction of the liquid inside the solid recovery pipe 75.

[0305] Therefore, on the downstream side of the solids recovery pipe 75, the liquid bypasses the upstream end of the downstream side pipe 22b and reaches the second opening 82a.

[0306] By detouring the liquid in this way, the solids recovery device 65 can reliably capture any slightly residual solids 80 in the liquid into the interior of the solids recovery pipe 75 as the liquid flows into the downstream side pipe 22.

[0307] Furthermore, the solid material recovery device 65 of this embodiment can reliably recover solid material 80 regardless of changes in posture that occur during the use of the solid material recovery device 65 in the operating room or the like.

[0308] That is, the downstream region 81 of the upstream side pipe 22a is inserted into the interior of the solids recovery pipe 75.

[0309] In addition, the downstream end of the downstream region 81 is sealed by the sealing member 81b.

[0310] In addition, the first opening 81a is located at a predetermined distance d or more relative to the liquid inflow section 75d and opens in a direction different from the central axis O2 of the solid recovery pipe 75.

[0311] Based on these structures, for example, Figure 23 As shown, even when the orientation of the solid recovery device 65 changes so that the upstream side of the solid recovery pipe 75 faces downward in the direction of gravity, the solids 80 deposited near the first opening 81a can be held between the solid recovery pipe 75 and the downstream region 81 of the upstream side pipe 22a without backflowing into the interior of the upstream side pipe 22a.

[0312] Further, the solid recovery device 65 can also be configured so that the insertion position of the upstream side pipe 22a with respect to the through-hole 77a of the first connector 77 can be changed.

[0313] If so configured, the distance d from the liquid inflow portion 75d to the first opening portion 81a can be arbitrarily changed according to the use or the like.

[0314] Likewise, the upstream side region 82 of the downstream side pipe 22b is inserted into the inside of the solid recovery pipe 75.

[0315] Further, the upstream side end portion of the upstream side region 82 is closed by a sealing member 82b.

[0316] Further, the second opening portion 82a opens in a direction different from the central axis O2 of the solid recovery pipe 75 at a position separated from the liquid outflow portion 75e by a prescribed distance d or more.

[0317] According to these configurations, for example, as shown in Figure 24 even if the downstream side of the solid recovery pipe 75 is disposed toward the lower side of the gravitational direction, the solid 80 precipitated in the vicinity of the second opening portion 82a can be held between the solid recovery pipe 75 and the downstream side region 82 of the downstream side pipe 22b without flowing into the inside of the downstream side pipe 22b.

[0318] Further, the solid recovery device 65 can also be configured so that the insertion position of the downstream side pipe 22b with respect to the through-hole 78a of the second connector 78 can be changed.

[0319] If so configured, the distance d from the liquid outflow portion 75e to the second opening portion 82a can be arbitrarily changed according to the use or the like.

[0320] Here, for example, as shown in Figure 25 as the first opening portion 81a and the second opening portion 82a, two or more pairs of rectangular holes can also be provided in the downstream side region 81 and the upstream side region 82, respectively.

[0321] In this case, it is preferable that the length of the short side of each rectangular hole constituting the first opening portion 81a be set to be sufficiently large compared to the particle diameter of the solid 80.

[0322] By so configuring, the solid 80 can be easily caused to flow into the inside of the solid recovery pipe 75.

[0323] Further, for example, as shown in Figure 26 it is preferable that the position of the end portion of the sealing member 81b closing the upstream side pipe 22a coincide with the position of the end portion of the first opening portion 81a.

[0324] This configuration allows solids 80 to easily flow into the interior of the solids recovery pipe 75.

[0325] Additionally, for example, such as Figure 27 As shown, inclined surfaces 81c and 82c can also be formed in each sealing component 81 and 82, respectively.

[0326] This configuration allows for proper control of the flow of liquid as it flows in and out of the solids recovery pipe 75.

[0327] Additionally, for example, such as Figure 28 As shown, the first opening 81a (and the second opening 82a) can also be formed by a circular hole.

[0328] Additionally, for example, such as Figure 29 As shown, the downstream region 81 of the upstream pipe 22a and the upstream region 82 of the downstream pipe 22b can also be formed by pipes with a thicker end shape, as needed.

[0329] That is, the inner diameter of the portion of the upstream side pipe 22a and the downstream side pipe 22b inserted into the solids recovery pipe 75 can be different from the inner diameter of the portion located outside the solids recovery pipe 75.

[0330] This configuration allows for greater freedom in adjusting the flow rate of the liquid relative to the solid recovery pipe 75 during inflow and outflow.

[0331] Additionally, for example, such as Figure 30 As shown, the downstream region 81 of the upstream side pipe 22a and the upstream region 82 of the downstream side pipe 22b can also be formed by pipes with a narrow end shape, as needed.

[0332] That is, the inner diameter of the portion of the upstream side pipe 22a and the downstream side pipe 22b inserted into the solids recovery pipe 75 can be different from the inner diameter of the portion located outside the solids recovery pipe 75.

[0333] This configuration allows for greater freedom in adjusting the flow rate of the liquid relative to the solid recovery pipe 75 during inflow and outflow.

[0334] Additionally, for example, such as Figure 31 As shown, it is also possible to bend the downstream side region 81 of the upstream side pipe 22a and the upstream side region 82 of the downstream side pipe 22b in a direction different from the central axis O2 of the solids recovery pipe 75.

[0335] With this configuration, the inflow and outflow directions of the liquid relative to the solids recovery pipe 75 can be set to any direction with a simpler structure.

[0336] In this case, for example, such asFigure 32 As shown in FIG. 6, the bending angles of the downstream side region 81 of the upstream side pipe 22a and the upstream side region 82 of the downstream side pipe 22b can each be less than 90 degrees.

[0337] Alternatively, for example, as shown in FIG. 7, the bending angles of the downstream side region 81 of the upstream side pipe 22a and the upstream side region 82 of the downstream side pipe 22b can each be greater than 90 degrees. Figure 33

[0338] Further, for example, as shown in FIG. 8, the upstream side pipe 22a and the downstream side pipe 22b can each be set in a direction different from the central axis O2 with respect to the insertion direction of the solid matter recovery pipe 75. Figure 34

[0339] In this case, for example, the upstream end and the downstream end of the solid matter recovery pipe 75 are each closed by a sealing member 75g and 75h.

[0340] Further, through holes 75i and 75j are formed in the wall portions on the upstream side and the downstream side of the solid matter recovery pipe 75.

[0341] Further, the through hole 77a of the first connector 77 and the through hole 78a of the second connector 78 are each provided at a position corresponding to the through holes 75i and 75j of the solid matter recovery pipe 75.

[0342] Further, the downstream side region 81 of the upstream side pipe 22a is inserted into the inside of the solid matter recovery pipe 75 via the through hole 77a and the through hole 75i.

[0343] Further, the upstream side region 82 of the downstream side pipe 22b is inserted into the inside of the solid matter recovery pipe 75 via the through hole 78a and the through hole 75j.

[0344] By so configuring, the inflow direction and the outflow direction of the liquid with respect to the solid matter recovery pipe 75 can be made different from the central axis O2 without special processing of the upstream side pipe 22a and the downstream side pipe 22b.

[0345] In this case, the downstream end opening of the upstream side pipe 22a and the upstream end opening of the downstream side pipe 22b directly function as the first opening and the second opening, respectively.

[0346] Further, for example, as shown in FIG. 9, a first shielding member 85a can be provided inside the solid matter recovery pipe 75 so as to oppose the downstream end opening of the upstream side pipe 22a. Figure 35 For example, as shown in FIG. 10, a second shielding member 85b can be provided inside the solid matter recovery pipe 75 so as to oppose the upstream end opening of the downstream side pipe 22b.

[0347] Figure 35 36 ​​​​As shown, the first shielding member 85a can be supported by a plurality of spokes 87a on a ring member 86a fixed on the inner circumferential surface of the solids recovery tube 75.

[0348] Similarly, a second shielding member 85b can be provided inside the solids recovery pipe 75, which is opposite to the upstream end opening of the downstream side pipe 22b.

[0349] like Figure 35 As shown, the second shielding member 85b can be supported by a ring member 86b fixed on the inner circumferential surface of the solids recovery tube 75 via a plurality of spokes 87b.

[0350] In this case, the gap between the downstream end of the upstream side pipe 22a and the first shielding member 85a is equivalent to the first opening, and the gap between the upstream end of the downstream side pipe 22b and the second shielding member 85b is equivalent to the second opening.

[0351] Additionally, for example, such as Figure 37 As shown, a structure in which the downstream end opening of the upstream side pipe 22a is pressed against the first shielding member 85a can also be adopted.

[0352] In this case, by providing a first opening 81a in the upstream side pipe 22a, the flow direction of the liquid relative to the solid recovery pipe 75 can be different from that of the central axis O2.

[0353] Furthermore, for example, if the outer diameter of the first shielding member 85a is set to be larger than the outer diameter of the upstream side pipe 22a, the flow of the liquid can be further varied.

[0354] Similarly, a structure in which the upstream end opening of the downstream side pipe 22b is pressed against the second shielding member 85b can also be adopted.

[0355] In this case, by providing a second opening 82a in the downstream side pipe 22b, the outflow direction of the liquid from the solids recovery pipe can be different relative to the central axis O2.

[0356] Furthermore, for example, if the outer diameter of the second shielding member 85b is set to be larger than the outer diameter of the downstream side pipe 22b, the flow of the liquid can be further varied.

[0357] Furthermore, the present invention is not limited to the embodiments and variations described above, and various modifications and alterations are possible, which are also within the technical scope of the present invention.

[0358] For example, the above-described implementation methods and the structures of various modifications can be appropriately combined.

Claims

1. A medical solids recovery device, comprising: A solids recovery tube is installed in a suction line that allows liquid containing solids to flow toward a suction device located outside the subject. A liquid inlet section is provided at one end of the solids recovery pipe, allowing the liquid to flow from the water suction pipe into the solids recovery pipe; A liquid outflow section is provided at the other end of the solid material recovery pipe, so that the liquid flows out from the solid material recovery pipe to the water absorption pipe; A coarse-diameter section is provided in the solid recovery pipe between the liquid inlet section and the liquid outlet section, and its inner diameter is formed to be larger than the inner diameter of the water suction pipe connected to the liquid inlet section; A first path is formed in the coarse diameter section, causing the liquid flowing from the liquid inlet to the liquid outlet to descend in the direction of gravity; as well as A second path, formed in the wider diameter section, causes the liquid flowing from the liquid inlet to the liquid outlet to rise in the opposite direction to the direction of gravity. The solids precipitate near the entrance of the first path and near the boundary between the first and second paths, and are captured in the solids recovery tube.

2. The medical solids recovery device according to claim 1, wherein, The direction in which the liquid flows into the interior of the coarse-diameter section is horizontal or has a downward component due to gravity.

3. The medical solids recovery device according to claim 1, wherein, The coarse diameter portion includes a ring portion that guides the liquid from the liquid inlet portion to the liquid outlet portion after causing the liquid to swirl.

4. The medical solids recovery device according to claim 3, wherein, The ring is fixed in a circular arc that causes the liquid from the liquid inlet to rotate more than 3 / 4 of a turn.

5. The medical solids recovery device according to claim 1, wherein, The inner diameter of the coarse-diameter section is more than twice the inner diameter of the suction pipe connected to the liquid inflow section.

6. The medical solids recovery device according to claim 1, wherein, The rough diameter section has an enlarged diameter section with a locally enlarged inner diameter.

7. The medical solids recovery device according to claim 6, wherein, The enlarged diameter section is a rotating body centered on the length axis of the solid material recovery tube.

8. The medical solids recovery device according to claim 1, wherein, The medical solids recovery device has a connector configured to be detachable from the end of the coarse diameter portion.

9. The medical solids recovery device according to claim 1, wherein, The larger diameter section has an air tank in the middle.

10. The medical solids recovery device according to claim 9, wherein, The gas tank has a retractable wall that separates the gas inside the tank from the liquid.

11. The medical solids recovery device according to claim 1, wherein, The medical solids recovery device has at least one of a first tube and a second tube. The first tube is inserted into the interior of the solid recovery tube from the liquid inlet, and has a first opening that allows the liquid to flow into the solid recovery tube only from a direction different from the central axis direction of the solid recovery tube; The second tube is inserted into the interior of the solids recovery tube from the liquid outflow portion, and has a second opening that allows the liquid to flow out of the solids recovery tube only from a direction different from the central axis direction of the solids recovery tube.

12. The medical solids recovery device according to claim 11, wherein, The outer diameter of the first tube and the second tube is smaller than the inner diameter of the coarse diameter portion.

13. The medical solids recovery device according to claim 11, wherein, At least one of the first tube and the second tube has at least one of the first opening and the second opening at a location other than a plane perpendicular to the central axis of the solids recovery tube.

14. The medical solids recovery device according to claim 13, wherein, The surface of at least one of the first tube and the second tube, perpendicular to the central axis of the solids recovery tube, is sealed.

15. The medical solids recovery device according to claim 11, wherein, The end of at least one of the first tube and the second tube is bent relative to the central axis of the solids recovery tube.

16. The medical solids recovery device according to claim 11, wherein, In at least one of the first tube and the second tube, the inner diameter of the portion inserted into the interior of the solids recovery tube is different from the inner diameter of the portion located outside the solids recovery tube.

17. The medical solids recovery device according to claim 11, wherein, The medical solids recovery device has at least one of a first shielding component and a second shielding component. The first shielding component is disposed inside the solid material recovery tube, opposite to the end of the first tube body. The second shielding component is disposed inside the solid material recovery tube and is opposite to the end of the second tube body.

18. A medical suction system comprising: An insertion device is inserted into the body being examined. A suction device, disposed outside the subject and the insertion device, for aspirating liquid; A suction line that allows the liquid mixed with solids to flow from the inside of the subject to the suction device; as well as A medical solids recovery device is installed midway through the suction pipe. The medical solids recovery device includes: A solids recovery pipe is installed in the water suction pipe; A liquid inlet section is provided at one end of the solids recovery pipe, allowing the liquid to flow from the water suction pipe into the solids recovery pipe; A liquid outflow section is provided at the other end of the solid material recovery pipe, so that the liquid flows out from the solid material recovery pipe to the water absorption pipe; A coarse-diameter section is provided in the solid recovery pipe between the liquid inlet section and the liquid outlet section, and its inner diameter is formed to be larger than the inner diameter of the water suction pipe connected to the liquid inlet section; A first path, formed in the coarse-diameter portion, causes the liquid flowing from the liquid inlet to the liquid outlet to descend in the direction of gravity; and A second path, formed in the wider diameter section, causes the liquid flowing from the liquid inlet to the liquid outlet to rise in the opposite direction to the direction of gravity. The solids precipitate near the entrance of the first path and near the boundary between the first and second paths, and are captured in the solids recovery tube.

19. The medical suction system according to claim 18, wherein, The medical suction system also includes a filter installed midway through the suction line, located downstream of the medical solids recovery device.

20. The medical suction system according to claim 19, wherein, The medical suction system also has: A flow meter, installed midway down the suction line from the downstream side of the medical solids recovery device, measures the flow rate of the liquid flowing in the suction line; and An air chamber is installed midway through the suction pipe between the medical solids recovery device and the flow meter.

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