CN105031756B - Extracorporeal circulation pipe of blood purifying device - Google Patents

Extracorporeal circulation pipe of blood purifying device Download PDF

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Publication number
CN105031756B
CN105031756B CN201510546331.XA CN201510546331A CN105031756B CN 105031756 B CN105031756 B CN 105031756B CN 201510546331 A CN201510546331 A CN 201510546331A CN 105031756 B CN105031756 B CN 105031756B
Authority
CN
China
Prior art keywords
blood
cam
intermediate plate
rotating shaft
blood line
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201510546331.XA
Other languages
Chinese (zh)
Other versions
CN105031756A (en
Inventor
崔伟
郭会越
马俊芳
刘培良
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201510546331.XA priority Critical patent/CN105031756B/en
Priority to CN201710236195.3A priority patent/CN106860931B/en
Publication of CN105031756A publication Critical patent/CN105031756A/en
Application granted granted Critical
Publication of CN105031756B publication Critical patent/CN105031756B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
    • A61M1/3621—Extra-corporeal blood circuits
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
    • A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
    • A61M1/1601—Control or regulation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
    • A61M1/3621—Extra-corporeal blood circuits
    • A61M1/3639—Blood pressure control, pressure transducers specially adapted therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
    • A61M1/3621—Extra-corporeal blood circuits
    • A61M1/3653—Interfaces between patient blood circulation and extra-corporal blood circuit
    • A61M1/3659—Cannulae pertaining to extracorporeal circulation
    • A61M1/3661—Cannulae pertaining to extracorporeal circulation for haemodialysis
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/16804—Flow controllers
    • A61M5/16813—Flow controllers by controlling the degree of opening of the flow line
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/16877—Adjusting flow; Devices for setting a flow rate

Landscapes

  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Hematology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Cardiology (AREA)
  • Urology & Nephrology (AREA)
  • Emergency Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • External Artificial Organs (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

The invention discloses an extracorporeal circulation pipe of a blood purifying device. The pipe comprises a pot body, a blood inlet catheter, a detecting catheter and a blood transfusion catheter, the blood inlet catheter and the detecting catheter are arranged at the upper end of the pot body, the blood transfusion catheter is arranged at the lower end of the pot body, a piston which is capable of moving inside the detecting catheter is arranged inside the detecting catheter, and piston limiting structures which do not seal inner holes of the detecting catheter are arranged at the two ends of the detecting catheter. According to the extracorporeal circulation pipe, due to the fact that the piston is arranged inside the detecting catheter, the piston can slide inside the detecting catheter instead of slipping out of the detecting catheter, so that blood inside the pot body can not flow out of the detecting catheter when pressure is detected, therefore, a pressure detecting instrument can not be polluted, and the cross infection of patients does not occur.

Description

A kind of extracorporeal circulation pipeline of apparatus for purifying blood
Technical field
The present invention relates to a kind of medical apparatus and instruments, more particularly to a kind of extracorporeal circulation pipeline of apparatus for purifying blood.
Background technology
The extracorporeal circulation pipeline of apparatus for purifying blood is used to for the blood of hemodialysis to be transmitted back to human body, and it includes kettle Body, enter blood conduit, detection conduit, blood line and dosing interface, detect that tube at one end connects another termination pressure in upper end of kettle body Detector.During blood transfusion, the hypertonia in kettle body is occurred unavoidably by blood press-in detection conduit and pressure is entered Detector, so as to pollute pressure detecting instrument, because pressure detecting instrument is the instrument of life-time service, in use, can cause Intersection sense beam between patient.
The content of the invention
The technical problem to be solved in the present invention is：The apparatus for purifying blood that a kind of blood will not flow out from detection conduit is provided Extracorporeal circulation pipeline.
In order to solve the above problems, the present invention includes kettle body, enters blood conduit, detection conduit and blood line, and described enters Blood conduit and detection conduit are located at kettle body upper end, and blood line is arranged on the lower end of kettle body, and being provided with described detection conduit can The piston of in-pipe is led in detection, the piston limit knot for not closing detection guide pipe inner hole is equipped with the two ends for detecting conduit Structure.
In order to improve limit effect, described piston limit structure is the annulus of protrusion detection pipe inner wall.
For the ease of control blood transfusion flow velocity, described blood line is provided with speed regulator, and speed regulator includes clip and cam, Clip includes first intermediate plate and second intermediate plate, and the middle part of two intermediate plates is hinged by rotating shaft, and between two intermediate plates spring is provided with, The clamping part of second intermediate plate is provided with the open slot for accommodating the clamping part of first intermediate plate away from one end of rotating shaft away from one end of rotating shaft, First intermediate plate is provided with the squeeze station that the axial direction in rotating shaft protrudes above first intermediate plate, and cam rotation is arranged in rotating shaft, squeezes Present a theatrical performance as the last item on a programme and the same side of first intermediate plate is located at cam, the side of neighbouring cam is provided with arc groove on squeeze station；When clip is not received During external force, the clamping part of two intermediate plates is clipped on blood line, and blood line is folder hole through the hole that two intermediate plates are formed, and second presss from both sides One end away from rotating shaft of the clamping part of piece is inserted in open slot, and blood line is contacted with the middle part of arc groove, blood line Do not contact with the side on folder hole away from rotating shaft；Cam in rotation process, cam have blood line is pressed off in squeeze station Arc groove in state and cam do not contact the state of blood line.
In order to prevent two intermediate plates in rotation cam softened, the side of described cam has a taper, side it is same Arc groove of the one end of neighbouring first intermediate plate relative to the other end more in rotating shaft, squeeze station has and cam on bus The corresponding taper of taper direction.
For the ease of dosing, the upper end of the kettle body is provided with dosing interface.
Beneficial effects of the present invention：The present invention can be in detection conduit due to being provided with piston, piston in detection conduit Interior slip, but detection conduit will not be skidded off, so that the blood in kettle body will not flow out detection conduit when pressure is detected, from Without polluting pressure detecting instrument, the cross infection of patient is not resulted in.
Description of the drawings
Fig. 1 is the structural representation of the specific embodiment of the invention one；
Fig. 2 is that the governor structure of the specific embodiment of the invention one illustrates enlarged drawing；
Fig. 3 is that the vertical view of the speed regulator of the specific embodiment of the invention two illustrates enlarged drawing (broken section)；
Fig. 4 is the A partial enlarged drawings of Fig. 1；
In figure：1st, kettle body, 2, dosing interface, 3, enter blood conduit, 4, piston limit structure, 5, piston, 6, detection conduit, 7, Speed regulator, 8, blood line, 701, first intermediate plate, 702, second intermediate plate, 703, rotating shaft, 704, cam, 705, squeeze station, 706, Arc groove, 707, spring, 708, open slot.
Specific embodiment
Specific embodiment one
A kind of specific embodiment as shown in Figure 1, it includes kettle body 1, enters blood conduit 3, detection conduit 6, the and of blood line 8 Dosing interface 2, dosing interface 2, enter blood conduit 3 and detection conduit 6 be located at the upper end of kettle body 1, blood line 8 is arranged on kettle body 1 Lower end, as shown in figure 4, being provided with the piston 5 that can be moved in detection conduit 6 in detection conduit 6, detects in the two ends of conduit 6 It is provided with the piston limit structure 4 of the endoporus for not closing detection conduit 6.Piston limit structure 4 can be the protrusion detection inwall of conduit 6 Annulus or projection, as long as the endoporus for not closing detection conduit 6 is again logical to block piston 5.Blood line 8 is provided with speed regulator 7。
As shown in Fig. 2 speed regulator 7 includes clip and cam 704, clip includes first intermediate plate 701 and second intermediate plate 702, The middle part of two intermediate plates is hinged by rotating shaft 703, and spring 707 is provided between two intermediate plates, and the clamping part of second intermediate plate 702 is remote The open slot 708 for accommodating the clamping part of first intermediate plate 701 away from one end of rotating shaft 703, the first folder are provided with from one end of rotating shaft 703 Piece 701 is provided with the squeeze station 705 that the axial direction in rotating shaft 703 protrudes above first intermediate plate 701, and cam 704 is rotatably arranged on In rotating shaft 703, squeeze station 705 and cam 704 are located at the same side of first intermediate plate 701, neighbouring cam 704 on squeeze station 705 Side is provided with arc groove 706；When clip does not receive external force, the clamping part of two intermediate plates is clipped on blood line 8, blood line 8 holes formed through two intermediate plates are folder hole, and one end away from rotating shaft 703 of the clamping part of second intermediate plate 702 is inserted in open slot 708 In, blood line 8 is contacted with the middle part of arc groove 706, and blood line 8 is not contacted with folder hole away from the side of rotating shaft 703； Cam 704 in rotation process, cam 704 have blood line 8 is pressed off the shape in the arc groove 706 of squeeze station 705 State and cam 704 do not contact the state of blood line 8, so so that when blood line 8 is extruded, cam 704 leads to cam 704 The power for crossing the transmission of blood line 8 is acted predominantly on squeeze station 705, so as to prevent two intermediate plates softened.
Operation principle：The blood extracted out from human body enters blood conduit 3 through dialysis apparatuses, and blood is by kettle body 1 from blood transfusion Conduit 8 is transmitted back to again human body.Detection conduit 6 is connected on pressure detecting instrument, in course of conveying, by pressure detecting instrument kettle is detected Pressure in body 1.Pressure in kettle body passes to the gas of the opposite side of piston 5 by piston 5, and so as to avoid blood pressure is entered Tension gauge.
The flow velocity of blood can be controlled by speed regulator 7, by the position of adjustment cam 704, such that it is able to change blood transfusion Velocity of blood flow in conduit 8.By the folding for controlling two intermediate plates, speed regulator 7 can be removed from blood line 8, be easy to Recycling.
Specific embodiment two
This specific embodiment two is with the difference of example one：In specific embodiment two, as shown in figure 3, the side of cam 704 Mask is tapered, and one end of neighbouring first intermediate plate 701 is squeezed relative to the other end more adjacent to rotating shaft 703 on the same bus of side The arc groove 706 presented a theatrical performance as the last item on a programme on 705 has taper corresponding with the taper direction of cam 7.So that cam 704 is to extruding During the extruding blood line 8 of platform 705, cam 704 accomplishes that the power on the arc groove 706 of squeeze station 705 has one by blood line 8 The individual power for promoting open slot 708 to extrude second intermediate plate 702 so that second intermediate plate 702 is difficult to skid off open slot 708.Concrete In embodiment one, as shown in Fig. 2 the side of cam 704 is cylinder, without taper, arc groove 706 is same also without cone Degree, the line intersected with arc groove 706 by the face of the axis of rotating shaft 703 and the diameter parallel of rotating shaft 703.

Claims (4)

1. a kind of extracorporeal circulation pipeline of apparatus for purifying blood, including kettle body, blood conduit, detection conduit and blood line, institute are entered Enter blood conduit and the detection conduit stated is located at kettle body upper end, and blood line is arranged on the lower end of kettle body, it is characterised in that：Described Being provided with detection conduit can lead the piston of in-pipe in detection, be equipped with the two ends for detecting conduit and do not close in detection conduit The piston limit structure in hole, described blood line is provided with speed regulator, and speed regulator includes clip and cam, and clip includes first Intermediate plate and second intermediate plate, the middle part of two intermediate plates is hinged by rotating shaft, and spring, the folder of first intermediate plate are provided between two intermediate plates Hold portion and be provided with the clamping part for accommodating second intermediate plate away from the open slot of one end of rotating shaft away from one end of rotating shaft, set in first intermediate plate There is the axial direction in rotating shaft to protrude above the squeeze station of first intermediate plate, cam rotation is arranged in rotating shaft, squeeze station and cam position In the same side of first intermediate plate, the side of neighbouring cam is provided with arc groove on squeeze station；When clip does not receive external force, two folders The clamping part of piece is clipped on blood line, blood line through two intermediate plates formed folder hole, the clamping part of second intermediate plate away from One end of rotating shaft is inserted in open slot, and blood line is contacted with the middle part of arc groove, away from rotating shaft on blood line and folder hole Side do not contact；Cam in rotation process, cam have blood line is pressed off the shape in the arc groove of squeeze station State and cam do not contact the state of blood line.
2. the extracorporeal circulation pipeline of apparatus for purifying blood according to claim 1, it is characterised in that：Described piston limit Structure is the annulus of protrusion detection pipe inner wall.
3. the extracorporeal circulation pipeline of apparatus for purifying blood according to claim 1, it is characterised in that：The side of described cam Mask is tapered, on the same bus of side one end of neighbouring first intermediate plate relative to the other end more in rotating shaft, squeeze station Arc groove have taper corresponding with the taper direction of cam.
4. the extracorporeal circulation pipeline of apparatus for purifying blood according to claim 1, it is characterised in that：The upper end of the kettle body It is provided with dosing interface.
CN201510546331.XA 2015-08-31 2015-08-31 Extracorporeal circulation pipe of blood purifying device Expired - Fee Related CN105031756B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201510546331.XA CN105031756B (en) 2015-08-31 2015-08-31 Extracorporeal circulation pipe of blood purifying device
CN201710236195.3A CN106860931B (en) 2015-08-31 2015-08-31 The governor of blood line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510546331.XA CN105031756B (en) 2015-08-31 2015-08-31 Extracorporeal circulation pipe of blood purifying device

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CN201710236195.3A Division CN106860931B (en) 2015-08-31 2015-08-31 The governor of blood line

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Publication Number Publication Date
CN105031756A CN105031756A (en) 2015-11-11
CN105031756B true CN105031756B (en) 2017-04-26

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CN201710236195.3A Expired - Fee Related CN106860931B (en) 2015-08-31 2015-08-31 The governor of blood line
CN201510546331.XA Expired - Fee Related CN105031756B (en) 2015-08-31 2015-08-31 Extracorporeal circulation pipe of blood purifying device

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CN112472912B (en) * 2021-01-12 2021-07-06 郭玉玲 Automatic needle pulling device with liquid flow detection function

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Also Published As

Publication number Publication date
CN106860931A (en) 2017-06-20
CN105031756A (en) 2015-11-11
CN106860931B (en) 2019-04-12

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