CN208892728U - A kind of Therapeutic paracentesis device - Google Patents

Abstract

The utility model discloses a kind of Therapeutic paracentesis devices, provided with suction means, the effect that thus can use absorption draws intraperitoneal hydrops, compared to it is existing flowed out naturally by pressure for, this programme can further provide for power, the outflow of hydrops can be made more effective, provided with fixed device, puncture needle can be fixed on patient abdominal cavity surface by fixed device in this way after doctor is inserted into puncture needle, assistant can not be had to clamp puncture needle, in this way labour can be decreased simultaneously to avoid the fault of assistant, provided with pressure sensor, it thus can detecte out the pressure change of the moment when puncture needle penetrates abdominal cavity, then pressure signal is sent to external equipment by the wireless transmitter being arranged, doctor's observation can be preferably provided in this way, also doctor is more preferably reminded, prevent from puncturing it is excessive and The internal organ injured.

Description

A kind of Therapeutic paracentesis device

Technical field

The utility model relates to medical instruments field, more particularly to a kind of Therapeutic paracentesis device.

Background technique

Patient is carried out abdominocentesis liquefaction is taken to treat or carry out tapping treatment being a kind of very universal in Hospitals at Present clinic Operation, especially for intraperitoneal a large amount of hydrops, and in the case where the critical life to patient, the hydrops intraperitoneal to patient into Row puncture liquid is even more a kind of effective treatment method, but people are made when carrying out Therapeutic paracentesis treatment at present Puncture needle is single puncture needle mostly, such doctor by puncture needle be inserted into it is intraperitoneal after need assistant come with medical clamp come Clamp puncture needle, prevent puncture needle in vivo deeply or stroke and injure internal organ, thus will increase labour cost, and not Skilled assistant is also easy to operate improper and accidents happened.

Since above-mentioned problem exists, it is necessary to one kind can one man operation, do not need the puncture liquid device of assistant to solve The certainly above problem.

Utility model content

In view of the deficienciess of the prior art, the purpose of this utility model is to provide one kind can one man operation, be not required to The puncture liquid device of assistant is wanted to solve the problems, such as to be previously mentioned in background technique.

To achieve the above object, it includes puncture needle and drainage tube that the utility model, which provides following technical solution, further includes Suction means, the puncture needle and suction means are connected to the both ends of drainage tube；

The puncture needle is equipped with fixation device for puncture needle to be fastened on to patient skin surface, on the puncture needle Fixing seat is arranged in the other end of opposite syringe needle,

The side adjacent with puncture needle of the fixing seat is additionally provided with regulating mechanism, to adjust the tapping flow rate of syringe needle, The fixing seat is provided with soft briquetting, one adjacent with regulating mechanism of the fixing seat with respect to the other end of puncture needle Side is also fixedly connected with hollow connecting column, offers interface channel in the fixing seat, one end of the connecting column with draw Flow tube is interconnected, and the other end of the connecting column is interconnected by interface channel and puncture needle；

Pressure sensor is additionally provided between the briquetting and fixing seat, between the pressure sensor and fixing seat also Be provided with wireless transmitter, the pressure sensor includes pedestal and the detection faces that are set on the base, the detection faces with press Briquetting fits, and the pedestal is coupled to wireless transmitter, to send pressure signal to wireless transmitter, the wireless transmitter Pressure signal is forwarded to external equipment.

Vibration motor, the shake are additionally provided with inside the wireless transmitter as a further improvement of the utility model, Dynamic motor is coupled to pressure sensor, and the pressure sensor is provided with pressure oscillation threshold value, when the pressure sensor detects When the fluctuation of the pressure signal arrived is more than pressure oscillation threshold value, the pressure sensor sends vibration signal to vibration motor, institute It states vibration motor and opens vibration.

The briquetting is rubber material as a further improvement of the utility model, and the briquetting is passed backwards to pressure Sensor is additionally provided with the first anti-skid chequer on one side, first anti-skid chequer combined by the multiple bulge loops being sequentially increased being arranged concentrically and At.

As a further improvement of the utility model, the fixing seat with respect to one end of syringe needle be additionally provided with two group second it is anti-skidding Line, two group of second anti-skid chequer are separately positioned on the two sides of puncture needle, and second anti-skid chequer multiple is successively increased by what is be arranged concentrically Big bulge loop is composed.

The fixed device includes fastener, fixing layer and for split leather as a further improvement of the utility model, The viscous layer of skin, the viscous layer are fitted in the side of fixing layer, and relative tack layer on fixing layer is arranged in the fastener The other side, the puncture needle penetrate fixing layer and viscous layer, and the fastener includes latch fitting and fastener, and the latch fitting is fixedly connected On fixing layer, the fastener is hinged in a side of latch fitting, and the first sandwich part, the button are fixedly connected on the latch fitting The second sandwich part is fixedly connected on part, first sandwich part and the second sandwich part match, to fix puncture needle.

First sandwich part and the second sandwich part are for clamping puncture needle as a further improvement of the utility model, Side is equipped with rubber block, and when the first sandwich part and the second sandwich part fixation puncture needle, two rubber block clampings live to wear Pricker.

As a further improvement of the utility model, the suction means include unidirectional liquid-inlet valve and unidirectional liquid valve and Injector syringe, the unidirectional liquid-inlet valve and unidirectional liquid valve are arranged on the end face of injector syringe, described unidirectionally to enter liquid Valve is connect by drainage tube with connecting column, and hydrops is imported injector syringe, the unidirectional liquid valve and outside from connecting column Device for storing liquid connection, exports to external device for storing liquid from injector syringe for hydrops.As further changing for the utility model Into the unidirectional liquid-inlet valve includes valve seat and rubber flap, and the valve seat is equipped with entrance and exit, the entrance and drainage tube It is connected to and in communication with, exports and is connected to and in communication with inside injector syringe, the rubber flap is that apertured rubber convex is opened in centre Block, rubber convex block setting between the inlet, and is partially toward injector syringe protrusion close to gap, described Entrance be equipped with inner flap, the outlet be equipped with outer baffle, the outer baffle along rubber convex block convex portion convex Rise, when liquid from entrance flow to export when, rubber convex block and outer baffle are inconsistent, gap opening, when liquid from outlet flow into When mouth, rubber convex block offsets with inner flap, gap closure.

The regulating mechanism includes screw rod, the block of cuboid and side as a further improvement of the utility model, It is provided with the rotation head of tooth, the section of the interface channel is in rectangle compatible with block, and the rotation head is rotatably attached to In fixing seat, the block is arranged in interface channel, and one end of the screw rod is fixedly connected on rotation head, and the other end penetrates solid Reservation is threadedly coupled after entering in interface channel with block

The beneficial effects of the utility model are provided with suction means, and the effect that thus can use absorption will be intraperitoneal Hydrops drawn, compared to it is existing flowed out naturally by pressure for, this programme can further provide for power, can make The outflow of hydrops is more effective, is provided with fixed device, can will be worn by fixed device in this way after doctor is inserted into puncture needle Pricker is fixed on patient abdominal cavity surface, so that it may clamp puncture needle without assistant, in this way can to avoid assistant fault simultaneously Labour is decreased, pressure sensor is provided with, thus can detecte out the pressure of the moment when puncture needle penetrates abdominal cavity Then pressure signal is sent to external equipment by the wireless transmitter being arranged, can preferably provide doctor in this way by variation Observation also more preferably reminds doctor, prevents from puncturing internal organ that are excessive and injuring.

Detailed description of the invention

Fig. 1 is puncture needle schematic front view；

Fig. 2 is puncture needle schematic side view；

Fig. 3 is puncture needle schematic top plan view；

Fig. 4 is puncture needle elevational schematic view；

Fig. 5 is the utility model general structure schematic diagram；

Fig. 6 is the utility model circuit part block diagram；

Fig. 7 is fixture structure schematic diagram；

Fig. 8 is regulating mechanism structural schematic diagram.

Specific embodiment

The utility model is described in further detail below in conjunction with embodiment given by attached drawing.

Referring to figs. 1 to shown in Fig. 8, a kind of Therapeutic paracentesis device of the present embodiment, including puncture needle 1 and drainage tube 2, also Including suction means 3, the puncture needle 1 and suction means 3 are connected to the both ends of drainage tube 2；

The puncture needle 1 is equipped with the fixation device 11 for puncture needle 1 to be fastened on to patient skin surface, the puncture Fixing seat 12 is set with respect to the other end of syringe needle on needle 1,

The side adjacent with puncture needle 1 of the fixing seat 12 is additionally provided with regulating mechanism 121, to adjust the tapping of syringe needle Flow velocity, the other end of the opposite puncture needle 1 of the fixing seat 12 are provided with soft briquetting 122, the fixing seat 12 with tune The adjacent one side of section mechanism 121 is also fixedly connected with hollow connecting column 123, offers interface channel in the fixing seat 12 124, one end of the connecting column 123 and drainage tube 2 are interconnected, and the other end of the connecting column 123 passes through interface channel 124 It is interconnected with puncture needle 1；

Pressure sensor 125,125 He of pressure sensor are additionally provided between the briquetting 122 and fixing seat 12 Wireless transmitter 126 is additionally provided between fixing seat 12, the pressure sensor 125 includes pedestal and the inspection being set on the base Survey face, the detection faces fit with briquetting 122, and the pedestal is coupled to wireless transmitter 126, with send pressure signal to Pressure signal is forwarded to external equipment by wireless transmitter 126, the wireless transmitter 126.

Through the above technical solutions, pressure sensor 125 can be the available circuit based on foil gauge, structural principle letter It is single, it is at low cost, when doctor needs to carry out abdominal cavity tapping, so that it may it is intraperitoneal that puncture needle 1 are inserted into patient, when puncture needle 1 The moment in abdominal cavity is penetrated, pressure sensor 125 can detect that pressure moment generates biggish fluctuation, such pressure sensor 125 Pressure signal will be issued to wireless transmitter 126, then the pressure signal is sent to external equipment by wireless transmitter 126, Here wireless transmitter 126 can be the wireless telecom equipment etc. based on bluetooth, while external equipment can be display and hand Machine etc., then doctor thus can may be used by the way that puncture needle 1 to be fixed on to the skin of abdomen surface of patient using fixed device 11 Puncture needle 1 is clamped with tool to save assistant, it is improper to avoid assistance operations in this way, unskilled that puncture needle 1 is caused to slide And internal organ are injured, while labour can also be reduced, and human cost is saved, it then can be by abdominal cavity by suction means 3 Interior hydrops is drawn, and hydrops in patient body enters interface channel 124 after the entrance of the syringe needle of puncture needle 1, is then passed through Enter drainage tube 2 after connecting column 123, enter back into suction means 3, compares for being flowed out naturally by pressure, suction means 3 It can provide and preferably draw effect, and regulating mechanism 121 can also be adjusted when drawing hydrops to adjust the tapping of syringe needle Flow velocity thus can preferably control the speed of absorption, avoid abdominal cavity decompression too fast and damage to patient.

As a kind of improved specific embodiment, it is additionally provided with vibration motor inside the wireless transmitter 126, it is described Vibration motor is coupled to pressure sensor 125, and the pressure sensor 125 is provided with pressure oscillation threshold value, when the pressure passes When the fluctuation for the pressure signal that sensor 125 detects is more than pressure oscillation threshold value, the pressure sensor 125 sends vibration signal To vibration motor, the vibration motor opens vibration.

Through the above technical solutions, vibration motor here is identical as micro motor used in mobile phone, work as pressure sensing When device 125 detects the variation of pressure, due to having the flashy sense that falls through when puncture needle 1 penetrates abdominal cavity, press this when Force snesor 125 will detect instantaneous pressure oscillation, and the pressure oscillation of this sense that falls through can be more than the pressure oscillation of setting Threshold value, such pressure sensor 125 will send vibration signal to vibration motor, and such vibration motor may turn on vibration, just This sense that falls through can be amplified prevents doctor to be inserted into too deep by puncture needle 1 and injure in abdominal cavity to remind doctor It is dirty, the inadequate doctor of experience is also just preferably indicated in this way, improves safety.

As a kind of improved specific embodiment, the briquetting 122 is rubber material, and the briquetting 122 is backwards Pressure sensor 125 is additionally provided with the first anti-skid chequer 127 on one side, first anti-skid chequer 127 by be arranged concentrically it is multiple successively The bulge loop of increase is composed.

Through the above technical solutions, when doctor need for puncture needle 1 to be inserted into patient it is intraperitoneal when, can be pressed with thumb Briquetting 122 is pressed, by thumb by can smoothly press puncture needle 1, the briquetting of rubber material on the first anti-skid chequer 127 122 can provide certain buffering and friction function, can thus reduce the sense of discomfort of doctor, while being also possible to prevent to press When finger skidded off from briquetting 122, thus probably injure patient, the first anti-skid chequer 127 of setting can be into One step increases friction, further increases safety, while the first anti-skid chequer is made of multiple circles to differ in size, thus can be with Realize that omnidirection increases friction, the skid resistance that omnidirection improves has better effect compared to common the first anti-skid chequer of vertical bar Fruit.

As a kind of improved specific embodiment, one end of the opposite syringe needle of the fixing seat 12 is additionally provided with two group second and prevents Sliding line 128, two group of second anti-skid chequer 128 are separately positioned on the two sides of puncture needle 1, and second anti-skid chequer 128 is by being arranged concentrically Multiple bulge loops being sequentially increased be composed.

Through the above technical solutions, two group of second anti-skid chequer 128 being arranged in fixing seat 12 can be for index finger and middle finger Fitting can provide the better point of application pressing briquetting 122 by thumb, while further increase antiskid function, Also improve the flexibility of operation puncture needle 1.

As a kind of improved specific embodiment, the fixed device 11 includes fastener 111, fixing layer 112 and uses In the viscous layer 113 of fitting skin, the viscous layer 113 is fitted in the side of fixing layer 112, and the setting of fastener 111 exists The other side of relative tack layer 113 on fixing layer 112, the puncture needle 1 penetrate fixing layer 112 and viscous layer 113, the fastening Part 111 includes latch fitting 1111 and fastener 1112, and the latch fitting 1111 is fixedly connected on fixing layer 112, and the fastener 1112 is cut with scissors It connects in a side of latch fitting 1111, is fixedly connected with the first sandwich part 1113 on the latch fitting 1111, on the fastener 1112 It is fixedly connected with the second sandwich part 1114, first sandwich part 1113 and the second sandwich part 1114 match, and puncture with fixed Needle 1.

Through the above technical solutions, when doctor needs puncture needle 1 being fixed on patients abdomen skin surface, by latch fitting 1111 and fastener 1112 separate, then slide fixing layer 112, viscous layer 113 is fitted in patients abdomen skin surface and is glued Patch, can will thus be fixed into 112 and be fixed on patients abdomen skin surface, then mutually detain latch fitting 1111 and fastener 1112 It closes, the first sandwich part 1113 and the second sandwich part 1114 will cooperate at this time, fix puncture needle 1, thus can be to prevent Only puncture needle 1 slides, and further increases safety, and doctor's both hands is also facilitated to carry out subsequent operation.

As a kind of improved specific embodiment, first sandwich part 1113 and the second sandwich part 1114 are used for clamping The side of puncture needle is equipped with rubber block 1115, when the first sandwich part 1113 and the second sandwich part 1114 fixation puncture needle 1, two Puncture needle 1 is lived in a 1115 clamping of the rubber block.

Through the above technical solutions, by the way that rubber block is arranged on the first sandwich part 1113 and the second sandwich part 1114 1115, it, thus can be when the first sandwich part 1113 and the second sandwich part then by rubber block 1115 come clamping puncture needle 1 When 1114 clamping puncture needle 1, there is rubber block 1115 to be buffered, clamping dynamics can be prevented excessive, make puncture needle 1 be bent or Person's fracture, will result in security risk, while rubber block 1115 can increase friction, further securely to puncture needle 1115 in this way Fixation.

As a kind of improved specific embodiment, the suction means 3 includes unidirectional liquid-inlet valve 31 and unidirectional liquid valve 32 and injector syringe, the unidirectional liquid-inlet valve 31 and unidirectional liquid valve 32 be arranged on the end face of injector syringe, institute It states unidirectional liquid-inlet valve 31 to connect by drainage tube 2 with connecting column 123, hydrops is imported into injector syringe, institute from connecting column 123 It states unidirectional liquid valve 32 to connect with external device for storing liquid, hydrops is exported into external device for storing liquid from injector syringe.

Through the above technical solutions, when doctor needs to draw the intraperitoneal hydrops of patient, it is only necessary to twitch syringe needle Cylinder, it is then identical as existing syringe, by piston effect can by the intraperitoneal hydrops of patient from intraperitoneal by wearing Successively hydrops can thus be inhaled by interface channel 124, connecting column 123, drainage tube 2 and unidirectional liquid-inlet valve 31 after pricker 1 Enter into syringe, then can squeeze injector syringe, by unidirectional after can equally squeezing hydrops under the effect of piston Liquid valve 32 imported into external device for storing liquid connection, and external device for storing liquid can be the liquid storing bag etc. with range, pass through in this way The scheme of unidirectional liquid-inlet valve 31 and unidirectional liquid valve 32 and injector syringe can realize preferably control speed, can also be with Draw power is preferably provided, doctor is facilitated to operate.

As a kind of improved specific embodiment, the unidirectional liquid-inlet valve 31 includes valve seat 311 and rubber flap 312, The valve seat 311 is equipped with entrance and exit, and the entrance is connected to and in communication with drainage tube 2, inside outlet and injector syringe It is connected to and in communication with, the rubber flap 312 is that apertured rubber convex block is opened in centre, and the rubber convex block setting is in entrance and goes out Between mouthful, and it is partially toward injector syringe protrusion close to gap, the entrance is equipped with inner flap 314, the outlet Be equipped with outer baffle 313, the outer baffle 313 along rubber convex block convex portion outwardly convex, when liquid from entrance flow to When outlet, rubber convex block and outer baffle 313 are inconsistent, gap open, when liquid flows to entrance from outlet, rubber convex block with it is interior Baffle 314 offsets, gap closure.

Through the above technical solutions, there is elasticity and recovery effect well, in this way by the rubber flap 312 of setting Leakproofness is all right, so that it may the entrance and exit of valve seat 311 is isolated well, the outer baffle 313 of setting can be more preferable Protection rubber flap 312, while it is excessive to prevent the gap on rubber flap 312 from opening, and can also preferably fix Rubber flap 312, the structure of inner flap 314 can be used to support the protrusion of rubber flap 312, rubber thus can be enhanced The barrier action of flap 312 prevents the gap of rubber flap 312 reverse opening under biggish pressure, unidirectional 32 He of liquid valve The structure of unidirectional liquid-inlet valve 31 is identical, so that it may realize the same effect.

As a kind of improved specific embodiment, the regulating mechanism 121 includes the block of screw rod 1211, cuboid 1212 and side be provided with the rotation head 1213 of tooth, the section of the interface channel 124 is in rectangle compatible with block 1212, institute It states rotation head 1213 to be rotatably attached in fixing seat 12, the block 1212 is arranged in interface channel 124, the screw rod 1211 one end is fixedly connected on rotation head 1213, and the other end penetrates after fixing seat 12 enters in interface channel 124 and block 1212 are threadedly coupled.

Through the above technical solutions, when doctor needs further to regulate and control the flow velocity of hydrops, so that it may pass through rotation Revolve head 1213, then revolve head 1213 and screw rod 1211 is driven to rotate, due to interface channel 124 and block 1212 be it is compatible, this Sample will be such that block 1212 moves in interface channel 124 along screw rod 1211 under mutual cooperation, when block 1212 is mobile Connecting column 123, which can be blocked, thus when to the position of connecting column 123 can occlude connecting column 123, so that it may so that Hydrops can not be flowed out from connecting column 123, and can block the area of connecting column 123 by adjusting block 1212 to control maximum Flow velocity, the flow velocity of hydrops can thus be regulated and controled, prevent patient abdominal cavity decompression it is too fast lead to discomfort, rotation head 1213 Upper tooth punching can increase friction, keep rotation rotation head 1213 more convenient.

The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.

Claims (9)

1. a kind of Therapeutic paracentesis device, including puncture needle (1) and drainage tube (2), which is characterized in that further include suction means (3), the puncture needle (1) and suction means (3) are connected to the both ends of drainage tube (2)；

The puncture needle (1) is equipped with the fixation device (11) for puncture needle (1) to be fastened on to patient skin surface, described to wear Fixing seat (12) are set with respect to the other end of syringe needle on pricker (1),

The side adjacent with puncture needle (1) of the fixing seat (12) is additionally provided with regulating mechanism (121), to adjust putting for syringe needle Flow velocity, the fixing seat (12) are provided with soft briquetting (122), the fixing seat with respect to the other end of puncture needle (1) (12) the one side adjacent with regulating mechanism (121) is also fixedly connected with hollow connecting column (123), the fixing seat (12) It inside offers interface channel (124), one end and drainage tube (2) of the connecting column (123) are interconnected, the connecting column (123) the other end is interconnected by interface channel (124) and puncture needle (1)；

Pressure sensor (125), the pressure sensor are additionally provided between the briquetting (122) and fixing seat (12) (125) it is additionally provided between fixing seat (12) wireless transmitter (126), the pressure sensor (125) includes pedestal and sets The detection faces on pedestal are set, the detection faces fit with briquetting (122), and the pedestal is coupled to wireless transmitter (126), it is given wireless transmitter (126) with sending pressure signal, pressure signal is forwarded to outside by the wireless transmitter (126) Equipment.

2. Therapeutic paracentesis device according to claim 1, it is characterised in that: inside the wireless transmitter (126) also It is provided with vibration motor, the vibration motor is coupled to pressure sensor (125), and the pressure sensor (125) is provided with pressure Fluctuation threshold value, it is described when the fluctuation for the pressure signal that the pressure sensor (125) detects is more than pressure oscillation threshold value Pressure sensor (125) sends vibration signal to vibration motor, and the vibration motor opens vibration.

3. Therapeutic paracentesis device according to claim 2, it is characterised in that: the briquetting (122) is rubber material, The briquetting (122) is additionally provided with the first anti-skid chequer (127) on one side backwards to pressure sensor (125), first anti-skid chequer (127) it is composed of the multiple bulge loops being sequentially increased being arranged concentrically.

4. Therapeutic paracentesis device according to claim 3, it is characterised in that: one of the fixing seat (12) with respect to syringe needle End is additionally provided with two group of second anti-skid chequer (128), and two group of second anti-skid chequer (128) is separately positioned on the two sides of puncture needle (1), described Second anti-skid chequer (128) is composed of the multiple bulge loops being sequentially increased being arranged concentrically.

5. Therapeutic paracentesis device according to claim 4, it is characterised in that: the fixed device (11) includes fastener (111), fixing layer (112) and the viscous layer (113) for being bonded skin, the viscous layer (113) are fitted in fixing layer (112) Side, the other side of relative tack layer (113), the puncture needle is arranged on fixing layer (112) in the fastener (111) (1) fixing layer (112) and viscous layer (113) are penetrated, the fastener (111) includes latch fitting (1111) and fastener (1112), institute Latch fitting (1111) to be stated to be fixedly connected on fixing layer (112), the fastener (1112) is hinged in a side of latch fitting (1111), It is fixedly connected with the first sandwich part (1113) on the latch fitting (1111), is fixedly connected with the second clamping on the fastener (1112) Portion (1114), first sandwich part (1113) and the second sandwich part (1114) match, to fix puncture needle (1).

6. Therapeutic paracentesis device according to claim 5, it is characterised in that: first sandwich part (1113) and second Side of the sandwich part (1114) for clamping puncture needle is equipped with rubber block (1115), when the first sandwich part (1113) and second press from both sides When puncture needle (1) is fixed in conjunction portion (1114), puncture needle (1) is lived in two rubber block (1115) clampings.

7. Therapeutic paracentesis device according to claim 1, it is characterised in that: the suction means (3) includes unidirectionally entering Liquid valve (31) and unidirectional liquid valve (32) and injector syringe, the unidirectional liquid-inlet valve (31) and unidirectional liquid valve (32) are all provided with It sets on the end face of injector syringe, the unidirectional liquid-inlet valve (31) is connect by drainage tube (2) with connecting column (123), will Hydrops imports injector syringe from connecting column (123), and the unidirectional liquid valve (32) connect with external device for storing liquid, by hydrops External device for storing liquid is exported to from injector syringe.

8. Therapeutic paracentesis device according to claim 7, it is characterised in that: the unidirectional liquid-inlet valve (31) includes valve seat (311) and rubber flap (312), the valve seat (311) are equipped with entrance and exit, and the entrance is connect simultaneously with drainage tube (2) Connection is exported and is connected to and in communication with inside injector syringe, and the rubber flap (312) is that apertured rubber convex is opened in centre Block, rubber convex block setting between the inlet, and is partially toward injector syringe protrusion close to gap, described Entrance is equipped with inner flap (314), and the outlet is equipped with outer baffle (313), and the outer baffle (313) is along rubber convex block Convex portion outwardly convex, when liquid is flowed to from entrance to be exported, rubber convex block and outer baffle (313) are inconsistent, and gap is opened, When liquid flows to entrance from outlet, rubber convex block offsets with inner flap (314), gap closure.

9. Therapeutic paracentesis device according to claim 1, it is characterised in that: the regulating mechanism (121) includes screw rod (1211), the block (1212) of cuboid and side are provided with the rotation head (1213) of tooth, and the section of the interface channel (124) is in The compatible rectangle with block (1212), the rotation head (1213) are rotatably attached on fixing seat (12), the block (1212) setting is in interface channel (124), and one end of the screw rod (1211) is fixedly connected in rotation head (1213), the other end It penetrates after fixing seat (12) enters in interface channel (124) and is threadedly coupled with block (1212).