CN116869612A - Venous catheter suction plug and autologous blood feedback device - Google Patents
Venous catheter suction plug and autologous blood feedback device Download PDFInfo
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- CN116869612A CN116869612A CN202311142515.0A CN202311142515A CN116869612A CN 116869612 A CN116869612 A CN 116869612A CN 202311142515 A CN202311142515 A CN 202311142515A CN 116869612 A CN116869612 A CN 116869612A
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
-
- 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
- A61M1/3622—Extra-corporeal blood circuits with a cassette forming partially or totally the blood circuit
- A61M1/36225—Extra-corporeal blood circuits with a cassette forming partially or totally the blood circuit with blood pumping means or components thereof
-
- 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
- A61M1/3627—Degassing devices; Buffer reservoirs; Drip chambers; Blood filters
- A61M1/3633—Blood component filters, e.g. leukocyte filters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B2017/22079—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for with suction of debris
Abstract
The application discloses a venous catheter thrombus and autologous blood back transfusion device, which comprises a thrombus suction catheter, a filtering device, a blood back transfusion pump, a blood back transfusion unit and a blood transfusion device which are communicated through a back transfusion pipeline, wherein blood with thrombus can enter the filtering device through the thrombus suction catheter under the suction effect of the blood back transfusion pump, the filtering device can filter and retain thrombus in the blood sucked out through the thrombus suction catheter, the blood filtered by the filtering device can enter the blood back transfusion unit under the pumping effect of the blood back transfusion pump, and the blood entering the blood back transfusion unit can enter a human body through the blood transfusion device under the action of gravity and atmospheric pressure, so that the thrombus suction operation can be realized, the blood sucked out of the human body in the operation process can be returned to the human body in real time while the blood vessel is dredged, and the waste of the blood is avoided.
Description
Technical Field
The application belongs to the technical field of medical instruments, and particularly relates to a venous catheter thrombolysis and autologous blood return device.
Background
Deep Vein Thrombosis (DVT) of lower limbs is most common in venous thrombotic diseases (VTE), the annual incidence rate reaches 1.6-1.8%, sudden death can be caused by concurrent pulmonary infarction in early stage, and the deep vein thrombosis sequela (PTS) of lower limbs can be caused by venous hypertension in late stage, so that the life quality of patients is seriously influenced, and early, safe and effective treatment plays an important role in saving the life of the patients, improving the life quality, and the treatment principle recommended by various guidelines at present emphasizes the use of thrombus volume reduction technology besides anticoagulation basic treatment.
Volume reduction techniques include thrombolytic therapy (systemic thrombolysis and catheter contact thrombolysis), catheter aspiration, mechanical thrombectomy, thrombolysis techniques, etc., wherein catheter contact thrombolysis is used clinically as an effective supplement to other volume reduction modalities.
The approach of the catheter: common internal jugular, contralateral and ipsilateral femoral, popliteal, saphenous, posterior tibial. The puncture method comprises direct puncture, incision puncture, puncture under B ultrasonic guidance and radiography puncture under DSA. The choice of direct thrombolytic route is closely related to therapeutic effects and complications. The puncture cannulas of the internal jugular vein and the contralateral femoral vein are retrograde to the blood flow direction, the venous valve is easy to damage, and the puncture cannulas are difficult to pass when the compression of the iliac vein is serious, and the puncture cannulas are mainly used for the proximal thrombus of the iliac femoral vein; the ipsilateral femoral vein cannula has poor thrombolysis effect on the far-segment thrombus of the femoral vein, and because the puncture affects the sitting position of the patient in the groin, the application is mainly the failure of the puncture of the popliteal vein, and the thrombus is adopted when the thrombus is positioned in the iliac vein; the saphenous vein and posterior tibial vein cannulas are difficult to succeed due to the small and thin vein spasm, and sometimes a doctor and patient are irradiated by means of X rays, in addition, due to the limited effective thrombolysis length (50 cm maximum) of the thrombolysis catheter fixation, the ineffective thrombolysis section inserted into the vein is overlong, and on the contrary, the coanda thrombosis is easy to be induced.
Along with the life and work modes, the posture is relatively fixed for a long time, such as: the venous blood of the lower limb is blocked under the conditions of long-time sitting, long-time lying, long-time pressing of the lower limb and the like, so that blood stasis is caused, venous thrombosis is promoted, and the venous thrombosis of the lower limb leads to pain and swelling of the affected limb, chronic ulcer of the lower limb, and blue and purple skin; in severe cases, the patient is inconvenient to move, and even the thrombus is easy to fall off, so that pulmonary embolism is easily caused. The volume reduction technology is a key for treating venous thrombosis, can reduce thrombus load and establish a blood flow channel, but the existing volume reduction technology at present has the following defects: (1) Simple thrombolytic therapy has the advantages of no blood flow channel, high bleeding risk, limited effect and complex clinical management; (2) The catheter thrombolysis operation is purely manual operation, a special catheter is not used, the thrombolysis effect is poor, and simultaneously, the sucked blood is lost to cause blood waste; (3) Mechanical thrombectomy has limited effectiveness on venous thrombosis, and is also costly in terms of discarding aspirated blood; (4) The thrombus breaking technology breaks and sucks out the thrombus and red blood cells in blood, so that not only is the blood lost, but also the kidney function is harmed, and the kidney function failure occurs when serious, so that the thrombus sucking time is strictly limited, and the cost is high.
Symptoms such as dizziness and hypodynamia can appear when the human body bleeds too much, because blood components are various and complex, adverse reactions and complications such as fever reaction, anaphylactic reaction and hemolytic reaction can occur when blood transfusion (allogeneic transfusion) is performed by using blood of other people, and the safety of blood transfusion can be greatly improved and the risk of adverse reactions is reduced when blood transfusion (autologous transfusion) is performed by using blood of the human body.
Disclosure of Invention
In order to reduce the loss of blood of a patient in the venous thrombosis volume reduction operation process, reduce the operation risk and ensure the treatment effect on the patient, the application realizes the purpose of real-time venous blood back transfusion while realizing venous thrombosis through a thrombus suction catheter, a filtering device, a blood back transfusion pump, a blood back transfusion structure and a blood transfusion device which are sequentially communicated, and the application provides a venous catheter thrombosis suction and autologous blood back transfusion device, which comprises the following specific steps:
a venous catheter thrombus-aspiration and autologous blood return device includes a thrombus-aspiration catheter having a first end capable of extending into a vein of a patient; a filtering device communicated with the thrombus suction catheter, wherein a filter screen capable of retaining thrombus is arranged in the filtering device; a blood feedback unit for collecting venous blood received through the filtering device; a blood return pump for continuously providing a force to cause blood to flow from the thrombus aspiration catheter into the blood return unit; the first end is communicated with the blood feedback unit, and the second end can extend into a blood transfusion device of a vein of a patient; the feedback pipeline is used for communicating the thrombus suction catheter, the filtering device, the blood feedback pump, the blood feedback unit and the blood transfusion device; the blood can enter the filtering device through the thrombus suction catheter in real time under the suction effect of the blood feedback pump, the thrombus in the blood sucked out through the thrombus suction catheter is filtered and remained by the filtering device, the blood filtered by the filtering device can enter the blood feedback unit in real time under the pumping effect of the blood feedback pump, and the blood entering the blood feedback unit is input into a human body through the blood transfusion device in real time under the action of gravity and atmospheric pressure.
In the application, a thrombus suction catheter, a filtering device, a blood feedback pump, a blood feedback unit and a blood transfusion device are sequentially communicated through pipelines, so that blood can move in the pipelines of a venous catheter suction plug and an autologous blood feedback device under the suction effect and the pumping effect of the blood feedback pump, when the blood passes through the filtering device, the filtering device filters the passing blood, so that thrombus in the blood is filtered out by the filtering device and is reserved in the filtering device, the filtered blood enters the blood feedback unit under the action of the blood feedback pump, and is input into a human body through the blood transfusion device under the action of gravity and atmospheric pressure. Through the arrangement mode, the application can input the sucked blood into the patient in real time in the process of performing the thrombolytic operation, thereby reducing the blood loss of the patient in unit time, relieving the discomfort of the patient caused by the blood loss, and reducing the possibility of blood transfusion adverse reaction because the patient inputs autologous blood in the process. Through storing the blood after filtering in blood back transfusion unit earlier, then pour into the mode of human body with the blood in the blood back transfusion unit through the blood transfusion ware, blood back transfusion unit can form the buffering between blood back transfusion pump and human body, thereby reduce the impact of blood back transfusion pump blood to human blood vessel, also can regulate and control suitable blood transfusion flow through controlling the blood transfusion ware, make the blood after filtering can be in the human body with suitable stable and safe entering of flow, avoid the unstable condition emergence of blood flow in the human body because the blood flow that gets into in the thrombus aspiration catheter is unstable, also reduced because the blood flow that inputs into the patient in the unit time is great, and the possibility of producing the damage to patient's health, thereby reduce the operation risk, guarantee the stability of blood transfusion, can close the blood transfusion ware when needed, make blood store in the blood back transfusion unit, also can avoid the waste of blood when guaranteeing patient safety.
In one embodiment of the application, the filtering device comprises a filtering shell and a thrombus filter screen, wherein the thrombus filter screen divides an inner cavity of the filtering shell into a liquid inlet cavity and a liquid outlet cavity; the liquid outlet cavity is a cavity which completely covers the thrombus filter screen.
The thrombus filter screen can filter blood entering the liquid inlet cavity, and leaves thrombus in the blood in the liquid inlet cavity, so that preparation work is provided for realizing real-time autologous transfusion in a thrombus suction operation; meanwhile, the liquid outlet cavity is a cavity which completely covers the thrombus filter screen, so that the filtering effect of the filtering device on thrombus in blood can be enhanced.
In one embodiment of the application, the filtering shell is cylindrical, the liquid inlet is arranged at one end of the filtering shell, and the liquid outlet is arranged at the other end of the filtering shell; the thrombus filter screen encloses into and has the cylindric cavity, along the direction that the inlet opening was directed out the liquid hole, the cross-sectional area of the cavity that thrombus filter screen encloses reduces gradually.
The thrombus filter screen is surrounded into a cylindrical cavity, so that the contact area between the thrombus filter screen and blood is increased when the through-flow cross section area of the filter shell is fixed, and the filtering effect of the thrombus filter screen on thrombus in the blood is enhanced; when blood flows from the liquid inlet hole to the liquid outlet hole, the thrombus filter screen can filter thrombus in the blood, and as the thrombus filter screen encloses a cylindrical cavity and the liquid inlet hole points to the liquid outlet hole, the cross-sectional area of the cavity enclosed by the thrombus filter screen is gradually reduced, and the blood flows from the liquid inlet hole to the liquid outlet hole, so that thrombus in the blood can be collected at the position of the thrombus filter screen, which is close to the liquid outlet hole.
In one embodiment of the application, the inner wall of the filtering shell comprises a liquid outlet wall which is arranged in the liquid outlet cavity and surrounds the thrombus filter screen, and the cross section area of a cavity surrounded by the liquid outlet wall is gradually reduced along the direction that the liquid inlet hole points to the liquid outlet hole.
The cross-sectional area of the cavity enclosed by the thrombus filter screen is gradually reduced along the direction of the liquid inlet hole to the liquid outlet hole, and the shape of the thrombus filter screen can be matched in a mode that the cross-sectional area of the cavity enclosed by the liquid outlet wall is gradually reduced along the direction of the liquid inlet hole to the liquid outlet hole so as to ensure the stability of the blood flowing in the cavity inside the filter shell, so that the blood is protected; optionally, the one end that goes out liquid chamber and thrombus filter screen and be close to out the liquid hole all is circular-arc, goes out the one end that goes out liquid chamber and thrombus filter screen and be close to out the liquid hole and all is circular-arc setting mode, can guarantee the filter effect of thrombus filter screen to thrombus in the blood when guaranteeing the blood mobility.
In one embodiment of the application, the filtering device further comprises a working piece arranged in the liquid inlet cavity so as to reduce the volume of the liquid inlet cavity, wherein the arrangement of the working piece does not influence the retention and accommodation of thrombus by the liquid inlet cavity; the working piece comprises a diversion part which is arranged opposite to the liquid inlet hole and has a semicircular longitudinal section and a filling part with an extending direction facing the liquid outlet hole; the blood entering the liquid inlet cavity through the liquid inlet hole can be contacted with the shunt part and can reach the thrombus filter screen under the dispersion action of the shunt part; the filling part extends into a cavity surrounded by the thrombus filter screen.
The blood entering the liquid inlet cavity through the liquid inlet hole can be dispersed to the periphery after contacting with the split part by the way of the split part with the semicircular longitudinal section, so that the blood is ensured to be fully contacted with the thrombus filter screen, and meanwhile, the possibility that thrombus is scattered by the split part when the blood and the split part are impacted can be reduced by the way of the semicircular longitudinal section of the split part, so that the filtering effect of the thrombus filter screen on thrombus in the blood is ensured; the flow dividing part is arranged opposite to the liquid inlet hole, so that blood entering the liquid inlet cavity through the liquid inlet hole is firstly contacted with the flow dividing part, and the flow dividing part can provide a certain shielding effect for thrombus collected at the position of the thrombus filter screen close to the liquid outlet hole, thereby reducing the possibility that the thrombus collected at the position of the thrombus filter screen close to the liquid outlet hole is scattered and enters the pipeline again due to the impact of the blood; the working piece provided by the application can occupy the space of the liquid inlet cavity, so that the stability of blood flowing in the liquid inlet cavity is ensured, and the blood residue in the liquid inlet cavity can be reduced after the operation is finished, thereby avoiding the waste of blood.
In one embodiment of the application, the blood back transfusion unit comprises a first blood bag, the first blood bag comprises a first filter screen for dividing an inner cavity of the first blood bag into a filter cavity and a blood storage cavity, the filter cavity is communicated with the blood back transfusion pump, the blood storage cavity is communicated with the blood transfusion device, blood entering the filter cavity can enter the blood storage cavity after being filtered by the first filter screen, and the blood entering the blood storage cavity can enter a human body through the blood transfusion device under the action of gravity and atmospheric pressure.
Through the first filter screen that sets up, can filter once more the blood after filter equipment filter action, further reduce the less thrombotic content of volume that probably exists in the blood to guarantee the security of inhaling real-time blood transfusion in the bolt operation process.
In one embodiment of the application, the blood return unit comprises a second blood bag, and the second blood bag is communicated with an anticoagulant injection tube; the device also comprises a swinging mixing instrument which is connected with the second blood bag and can drive the second blood bag to move.
The operation personnel can input anticoagulant into the second blood bag through the anticoagulant injection tube, and the anticoagulant is fully mixed with blood through the swinging mixer, so that the possibility of coagulation phenomenon in the blood is reduced, the operation risk is reduced, and the safety of a patient is ensured.
In one embodiment of the application, the blood back transfusion unit comprises a first blood bag and a second blood bag, wherein the first blood bag is communicated with the blood back transfusion pump through a back transfusion pipeline, the second blood bag is arranged below the first blood bag and is communicated with the first blood bag through the back transfusion pipeline, so that blood in the first blood bag can enter the second blood bag under the action of gravity and atmospheric pressure, the blood transfusion device is communicated with the second blood bag, and the blood in the second blood bag can enter a human body through the blood transfusion device under the action of gravity and atmospheric pressure.
When the blood back-transfusion pump pumps blood into the first blood bag, fluctuation of blood in the first blood bag can be caused, and the blood pumped into the first blood bag by the blood back-transfusion pump can enter a human body through the blood transfusion device after entering the second blood bag through the arranged second blood bag, so that the blood back-transfusion pump has small influence on blood flowing in the second blood bag, and the blood in the second blood bag can safely and stably enter the human body.
In one embodiment of the application, a blood return pump includes a pump body having a pump chamber inlet and a pump chamber outlet; the pump cavity of the pump body is communicated with the filtering device through a pump cavity inlet and a return pipeline, and is communicated with the blood return unit through a pump cavity outlet and a return pipeline, and a one-way valve is arranged at the pump cavity inlet and the pump cavity outlet; the pump body is equipped with the installing port with the pump chamber intercommunication, and installing port department is equipped with the elastic diaphragm, and when the elastic diaphragm was stretched, pump chamber volume grow, and the one-way valve of pump chamber import department is opened, and the one-way valve of pump chamber exit is closed, and blood gets into the pump chamber from filter equipment, and when the elastic diaphragm was extrudeed, pump chamber volume reduced, and the one-way valve of pump chamber import department is closed, and the one-way valve of pump chamber exit is opened, and blood gets into blood feedback unit from the pump chamber.
Through the setting mode of two unidirectional valves switching pump chamber, realized realizing the flow of blood in the pipeline through pump chamber volume change, simultaneously, unidirectional valve opens or closes the destruction that causes to flowing blood less, has reduced the damage to blood.
In one embodiment of the present application, the thrombus aspiration catheter includes a main conduit and a branch conduit in communication with the main conduit, through which the balloon is capable of entering the main conduit to enter the human body.
When the suction of thrombus in the blood vessel is in question, the application can send the saccule into the human body through the main pipeline by the branch pipeline so as to strengthen the removal effect of thrombus in the blood vessel.
Drawings
FIG. 1 is a component connection schematic of an exemplary embodiment of the present application;
FIG. 2 is an enlarged schematic view of a portion of a thrombus aspiration catheter of the present application;
FIG. 3 is a schematic view of the construction of an exemplary embodiment of a thrombus aspiration catheter of the present application;
FIG. 4 is a schematic view of the balloon of the present application in an unexpanded state;
FIG. 5 is a schematic view showing a state when the balloon of the present application is inflated;
FIG. 6 is a schematic view of the structure of an exemplary embodiment of a filter device of the present application;
FIG. 7 is a schematic perspective view of an exemplary embodiment of a filter device of the present application;
FIG. 8 is a schematic view of an exemplary embodiment of a liquid exit wall in the present application;
FIG. 9 is a component connection schematic of another illustrative embodiment of the application;
FIG. 10 is a schematic illustration of an exemplary embodiment of an arrangement of a first filter screen in the present application;
FIG. 11 is a schematic diagram of an exemplary embodiment of a blood return pump of the present application;
fig. 12 is a schematic structural view of an exemplary embodiment of a pump chamber in the present application.
In the figure:
1. a thrombus aspiration catheter; 101. a main pipeline; 102. a branch pipeline; 103. a suction through hole; 104. a blood inlet; 105. a plug; 2. a filtering device; 201. a filter housing; 2011. an upper cylinder; 2012. a lower cylinder; 2013. a liquid inlet hole; 2014. a liquid inlet cavity; 2015. a liquid outlet hole; 2016. a liquid outlet cavity; 2017. a liquid outlet wall; 202. a thrombus filter screen; 203. a work piece; 2031. a split flow section; 2032. a filling part; 3. a first blood bag; 301. a first blood bag inlet; 302. a filter chamber; 303. a blood storage cavity; 4. a first filter screen; 5. a second blood bag; 6. a blood transfusion device; 701. an anticoagulant injection tube; 702. swinging and evenly mixing the materials; 703. a balloon; 704. a blood vessel; 705. thrombus; 8. a blood return pump; 801. a piston; 802. a piston cylinder; 803. a piston working cavity; 804. a pump body; 805. a pump chamber; 806. a pump chamber inlet; 807. a pump chamber outlet; 808. a one-way valve; 809. an elastic membrane.
Detailed Description
For a clearer understanding of the technical features, objects and effects of the present application, embodiments of the present application will now be described with reference to the drawings, in which like reference numerals refer to identical or structurally similar but functionally identical components throughout the separate views.
In this document, "schematic" means "serving as an example, instance, or illustration," and any illustrations, embodiments described herein as "schematic" should not be construed as a more preferred or advantageous solution.
For the sake of simplicity of the drawing, the parts relevant to the present application are shown only schematically in the figures, which do not represent the actual structure thereof as a product. In addition, for simplicity and ease of understanding, components having the same structure or function in some of the figures are shown schematically only one of them, or only one of them is labeled.
Please refer to fig. 1 to 12 for an understanding of the present application.
The thrombus aspiration catheter 1, the filtering device 2, the blood feedback pump 8, the blood feedback unit and the blood transfusion device 6 are sequentially communicated through a feedback pipeline; the first end of the thrombus-aspiration catheter 1 protrudes into the vein of the patient, i.e. the end of the thrombus-aspiration catheter 1 with the blood inlet 104 is able to protrude into the vein for aspiration of a thrombus; the filtering device 2 is communicated with the thrombus suction catheter 1, and a filter screen capable of retaining thrombus is arranged in the filtering device; a blood feedback unit for collecting venous blood received after passing through the filtering device 2; the blood return pump 8 is for continuously supplying a force so that blood flows from the thrombus-aspiration catheter 1 into the blood return unit; the blood transfusion device 6 has a first end communicated with the blood feedback unit and a second end capable of extending into the vein of the patient; the feedback pipeline is used for sequentially communicating the thrombus suction catheter 1, the filtering device 2, the blood feedback pump 8, the blood feedback unit and the blood transfusion device 6.
Referring to fig. 1, the blood back transfusion unit comprises a first blood bag 3, a thrombus suction catheter 1, a filtering device 2, a blood back transfusion pump 8, the first blood bag 3 and a blood transfusion device 6 which are included in the venous catheter thrombus suction and autologous blood back transfusion device are sequentially communicated through a back transfusion pipeline, when the device is used for operation, the thrombus suction catheter 1 is placed into a blood vessel through the operation of a doctor and reaches the thrombus existence position, the blood back transfusion pump 8 works, the blood inlet 104 of the thrombus suction catheter 1 generates negative pressure, so that thrombus at the blood inlet 104 of the thrombus suction catheter 1 is sucked, blood in the blood vessel is sucked into the thrombus suction catheter 1 and enters a pipeline of the device in the process, and the blood mixed with the thrombus enters the filtering device 2 under the action of the blood back transfusion pump 8, so that the device can reduce the thrombus existing in the blood vessel.
In one embodiment of the present application, the wall of the thrombus-aspiration catheter 1 at the blood inlet 104 is provided with an aspiration through hole 103, and referring to fig. 2, when the thrombus-aspiration catheter 1 aspirates thrombus by using the negative pressure generated by the operation of the blood return pump 8, the aspiration through hole 103 aspirates thrombus around the thrombus-aspiration catheter 1, thereby improving the aspiration efficiency of the thrombus-aspiration catheter 1 on thrombus; meanwhile, when a thrombus-aspiration operation is performed, the aspiration through hole 103 increases the aspiration range of the thrombus-aspiration catheter 1, so that posture adjustment of a doctor on the thrombus-aspiration catheter 1 can be reduced, and the possibility of damage to a blood vessel caused by the thrombus-aspiration catheter 1 is reduced; and when the blood inlet 104 of the thrombus-aspiration catheter 1 is contacted with the wall of the blood vessel, blood can still enter the pipeline of the thrombus-aspiration catheter 1 through the aspiration through hole 103, so that the condition that the thrombus-aspiration catheter 1 damages the blood vessel due to the fact that the blood inlet 104 is blocked by the wall of the blood vessel due to negative pressure at the position of the blood inlet 104 is avoided.
Those skilled in the art will appreciate that the catheter shape at the blood inlet 104 of the thrombus aspiration catheter 1 of the present application can be made into a balloon, oval or the like shape that is less likely to damage the blood vessel 704.
In one embodiment of the present application, the thrombus aspiration catheter 1 comprises a main line 101 and a branch line 102 communicating with the main line 101, and the balloon 703 can enter the main line 101 through the branch line 102 to enter the human body, please refer to fig. 3, 4 and 5, when the suction of the thrombus 705 by the blood feedback pump 8 through the main line 101 encounters a problem, the physician can extend into the balloon 703 through the branch line 102 through the main line 101 to the thrombus site, thereby expanding the blood vessel 704 by the balloon 703 or scraping the thrombus 705 by the balloon 703, thereby enhancing the removal of the thrombus 705.
As will be appreciated by those skilled in the art, the suction through hole 103 can also be provided at the blood inlet 104 of the main line 101, see fig. 3; threads can be arranged on the branch pipeline 102, so that when the branch pipeline 102 is not used, the branch pipeline 102 can be closed by utilizing the screw cap, and the condition that the pressure of the main pipeline 101 is relieved due to the fact that the branch pipeline 102 is not tightly sealed is avoided; at the same time, the condition that external pollutants enter the pipeline of the device through the branch pipeline 102 is avoided; of course, other sealing methods are also provided to seal the branch pipe 102, such as plugging the branch pipe 102 with the plug 105, see fig. 3, which is not described herein.
Referring to fig. 1, since the thrombus-aspiration catheter 1, the filtering device 2, the blood return pump 8, the first blood bag 3, and the blood transfusion device 6 are sequentially communicated, blood can enter the filtering device 2 through the thrombus-aspiration catheter 1 under the aspiration action of the blood return pump 8, and the filtering device 2 can filter and retain thrombus in the blood aspirated through the thrombus-aspiration catheter 1. In one embodiment of the present application, the filtering device 2 includes a filtering housing 201 and a thrombus-filtering screen 202 disposed in an inner cavity of the filtering housing 201 and dividing the inner cavity of the filtering housing 201 into a liquid inlet cavity 2014 and a liquid outlet cavity 2016, please refer to fig. 6 and 7, the thrombus-aspiration catheter 1 communicates with the liquid inlet cavity 2014 through a liquid inlet hole 2013 disposed in the filtering housing 201, the liquid outlet cavity 2016 communicates with the blood back-feeding pump 8 through a liquid outlet hole 2015 disposed in the filtering housing 201, the blood entering the thrombus-aspiration catheter 1 flows in the direction of the blood back-feeding pump 8 due to the suction effect of the blood back-feeding pump 8, so that the blood in the thrombus-aspiration catheter 1 enters the liquid inlet cavity 2014 through the liquid inlet hole 2013, enters the liquid outlet cavity 2016 after the filtering effect of the thrombus-filtering screen 202, finally leaves the filtering device 2 through the liquid outlet hole 2015 due to the filtering effect of the thrombus-filtering screen 202 on the blood entering the liquid outlet cavity 2016 from the liquid inlet cavity 2014, the thrombus in the blood is remained in the liquid inlet cavity 2014, the liquid outlet cavity 2016 is a cavity which completely covers the thrombus filtering net 202, the liquid outlet cavity 2016 is in a shape which is not easy to accumulate the blood, such as semicircle shape, cone shape and the like, the filtered blood enters the first blood bag 3 under the action of the blood back-transfusion pump 8, the blood entering the first blood bag 3 enters the human body through the blood transfusion device 6 under the action of gravity and atmospheric pressure, the blood sucked from the human body by the device in the thrombus sucking operation process is back-transfused into the human body through the first blood bag 3 and the blood transfusion device 6 communicated with the first blood bag 3, thereby avoiding the waste of autologous blood, reducing the operation risk, and the filtered blood can stably and safely enter the human body with a proper flow by controlling the blood transfusion device 6, the situation that the blood flow entering the human body is unstable due to the unstable blood flow entering the thrombus aspiration catheter 1 is avoided, the possibility that the human body is damaged due to the fact that the blood flow entering the human body is large in unit time is also reduced, the operation risk is reduced, the stability of blood transfusion is guaranteed, the blood transfusion device 6 can be closed when needed, the blood is stored in the first blood bag 3, and the waste of the blood can be avoided while the safety of the patient is guaranteed.
Blood can only enter the blood feedback pump 8 after passing through the filtering device 2, and the filtering device 2 can filter thrombus in blood, so that the blood feedback pump 8 can be prevented from being blocked by the thrombus by the arrangement mode, and the normal operation of an operation is ensured.
Referring to fig. 6 and 7, in an embodiment of the present application, a filter housing 201 is cylindrical, a liquid inlet 2013 is disposed at one end of the filter housing 201, and a liquid outlet 2015 is disposed at the other end of the filter housing 201; the thrombus filter screen 202 encloses a cylindrical cavity, along the direction that the liquid inlet 2013 points to the liquid outlet 2015, the cross-sectional area of the cavity enclosed by the thrombus filter screen 202 is gradually reduced, please refer to fig. 6 and 7, the shape similar to a cone shape enclosed by the thrombus filter screen 202 is formed, when blood flows from the liquid inlet 2013 to the liquid outlet 2015, under the action of the blood flow, thrombus in the blood is continuously collected to the position of the thrombus filter screen 202 close to the liquid outlet 2015, see the position of the cone tip of the thrombus filter screen 202 shown in fig. 6, thereby avoiding the thrombus from blocking other positions of the thrombus filter screen 202, and enabling the position of the thrombus filter screen 202 to be controllable; meanwhile, due to the three-dimensional shape design of the thrombus filter screen 202, when the through-flow cross section area of the filter shell 201 is fixed, the contact area between the thrombus filter screen 202 and blood is increased, so that the filtering effect of the thrombus filter screen 202 on thrombus in blood is enhanced.
In one embodiment of the present application, the inner wall of the filtering housing 201 includes a liquid outlet wall 2017 disposed in the liquid outlet cavity 2016 and surrounding the thrombus filter 202, the cross-sectional area of the cavity enclosed by the liquid outlet wall 2017 is gradually reduced along the direction of the liquid inlet 2013 pointing to the liquid outlet 2015, and referring to fig. 6 and 8, the liquid outlet wall 2017 is disposed around the thrombus filter 202, and the liquid outlet wall 2017 forms a "cone-shaped" curved surface similar to the thrombus filter 202.
Through the mode that the cross sectional area of the cavity enclosed by the liquid outlet wall 2017 gradually reduces along the direction that the liquid inlet 2013 points to the liquid outlet 2015, flowing blood can enter the liquid outlet 2015 more easily, meanwhile, the liquid outlet wall 2017 is matched with the shape of the thrombus filter screen 202, and the liquid outlet wall 2017 can better bear the filtered blood of the thrombus filter screen 202 so as to ensure the flowing stability of the blood in the cavity inside the filter shell 201 and protect the blood.
Further, the outlet cavity 2016 and the thrombus filter 202 are all circular-arc at the end near the outlet hole, so as to avoid the occurrence of large fluctuation of blood flow caused by abrupt change of the shapes of the outlet cavity 2016 and the thrombus filter 202 due to the blood flowing from the inlet hole 2013 to the outlet hole 2015, and further reduce the damage to the blood.
Referring to fig. 6 and 7, in one embodiment of the present application, the filtering device 2 further includes a working member 203 disposed in the liquid inlet cavity 2014 to reduce the volume of the liquid inlet cavity 2014, the working member 203 is configured to be matched with the internal cavity of the filtering housing 201 and the size of the thrombus filtering screen 202, so that the placement of the working member 203 does not affect the retention and accommodation of thrombus by the liquid inlet cavity 2014, and the working member 203 includes a flow dividing portion 2031 disposed opposite to the liquid inlet hole 2013 and having a semicircular longitudinal section and a filling portion 2032 extending toward the liquid outlet hole 2015; the blood entering the liquid inlet cavity 2014 through the liquid inlet hole 2013 can be contacted with the flow dividing part 2031, and the blood reaches the thrombus filter screen 202 under the dispersion action of the flow dividing part 2031, because the longitudinal section of the flow dividing part 2031 is semicircular, when flowing blood is contacted with the flow dividing part 2031, the flow dividing part 2031 has dispersion action on flowing blood, and meanwhile, the possibility of collision and thrombus breakage between thrombus and the flow dividing part 2031 can be reduced, so that the condition that the thrombus filter screen 202 is blocked by scattered thrombus is avoided; the filling part 2032 extends into the cavity surrounded by the thrombus filtering screen 202, referring to fig. 6, the filling part 2032 extends into the cavity surrounded by the thrombus filtering screen 202, the filling part 2032 can occupy the cavity volume surrounded by the thrombus filtering screen 202, and the presence of the working piece 203 can reduce the amount of blood remained in the filtering device 2 after the end of the thrombus aspiration operation because the shunt part 2031 and the filling part 2032 of the working piece 203 occupy the space of the liquid inlet cavity 2014; meanwhile, since the diversion portion 2031 is opposite to the liquid inlet 2013, the blood entering the liquid inlet cavity 2014 through the liquid inlet 2013 is in contact with the diversion portion 2031 first, the diversion portion 2031 can provide a certain shielding effect for the thrombus collected at the position of the thrombus filter screen 202 close to the liquid outlet 2015, so that the possibility that the thrombus collected at the position of the thrombus filter screen 202 close to the liquid outlet 2015 is scattered and enters the pipeline again due to the impact of the blood is reduced, and the occurrence of the condition that the thrombus collected at the position of the thrombus filter screen 202 close to the liquid outlet 2015 is scattered to other positions of the thrombus filter screen 202 by the blood entering through the liquid inlet 2013 and the filtering effect of the thrombus filter screen 202 is affected can be reduced.
One skilled in the art can understand that the shape of the filling portion 2032 can be conical, and the size of the filling portion 2032 can be matched with the size of a cavity surrounded by the thrombus filter screen 202, so as to ensure that the distance between the outer surface of the filling portion 2032 and the thrombus filter screen 202 is kept constant, thereby ensuring the flowing effect of blood; preferably, the surface of the work piece 203 is smooth to improve smoothness of the blood flow and to avoid damage to the blood in the flow of the work piece 203.
It will be appreciated by those skilled in the art that the "conical shape" and "conical tip" described above are merely for convenience of describing the present application, and do not specifically limit the overall shape of the thrombus filter 202 enclosed by the cavity and the overall shape of the liquid outlet wall 2017 enclosed by the cavity, and the overall shape of the thrombus filter 202 enclosed by the cavity and the overall shape of the liquid outlet wall 2017 enclosed by the cavity are not limited to the above-described shapes, but may have other shapes, such as "Fang Zhuizhuang", "truncated cone shape", etc., and will not be repeated herein.
Of course, as can be understood by those skilled in the art, various ways of disposing the thrombus filter screen 202 in the internal cavity of the filter housing 201 are provided, as shown in fig. 6 and 7, the filter housing 201 is divided into an upper cylinder 2011 and a lower cylinder 2012 that can be connected by screw, a liquid inlet 2013 is provided in the upper cylinder 2011, a liquid outlet 2015 is provided in the lower cylinder 2012, and when the upper cylinder 2011 and the lower cylinder 2012 are connected by screw, the upper cylinder 2011 and the lower cylinder 2012 can clamp the annular hard strip of the thrombus filter screen 202, so that the thrombus filter screen 202 is fixed in the internal cavity of the filter housing 201 by the combined action of the upper cylinder 2011 and the lower cylinder 2012, and of course, other ways of fixing the thrombus filter screen 202 in the internal cavity of the filter housing 201 are provided, such as clamping, which will not be repeated herein.
Referring to fig. 1, the blood filtered by the filtering device 2 can enter the first blood bag 3 through the feedback pipeline under the pumping action of the blood feedback pump 8, the blood entering the first blood bag 3 can enter the human body through the blood transfusion device 6 under the action of gravity and atmospheric pressure, the blood pumped by the blood feedback pump 8 firstly enters the first blood bag 3, and then enters the human body through the blood transfusion device 6, the first blood bag 3 can form buffer between the blood feedback pump 8 and the human body, so that the condition that the blood feedback pump 8 impacts the blood vessel 704 of the human body through the blood when the blood feedback pump 8 directly pumps the blood into the human body is avoided, and further the blood transfusion risk can be reduced due to the existence of the first blood bag 3 and the blood transfusion device 6, and the operation risk is reduced.
Referring to fig. 1 and 9, in one embodiment of the present application, the blood feedback unit further includes a first filter screen 4 disposed in the internal cavity of the first blood bag 3 and dividing the internal cavity of the first blood bag 3 into a filter cavity 302 and a blood storage cavity 303, the filter cavity 302 is communicated with the blood feedback pump 8 through a first blood bag inlet 301 provided in the first blood bag 3, the blood storage cavity 303 is communicated with the blood transfusion device 6, the blood pumped by the blood feedback pump 8 enters the filter cavity 302 through the first blood bag inlet 301, the blood entering the filter cavity 302 can enter the blood storage cavity 303 after being filtered by the first filter screen 4 under the action of factors such as the blood feedback pump 8 and gravity, and the blood entering the blood storage cavity 303 can enter the human body through the blood transfusion device 6 under the action of gravity and atmospheric pressure. Through the first filter screen 4 that sets up, can filter once more the blood after filter equipment 2 filtration, the thrombus of less volume that probably exists in the further reduction blood to guarantee the security of inhaling real-time blood transfusion in the bolt operation in-process.
Optionally, the filter hole of the first filter screen is a one-way hole, allowing blood to enter the blood storage cavity from the filter cavity.
As can be understood by those skilled in the art, the first filter 4 in the present application has various positions, referring to fig. 9, the first filter 4 is semicircular, and covers the first blood bag inlet 301, referring to fig. 10, the first filter 4 can also be vertically disposed in the cavity inside the first blood bag 3, and of course, the first filter 4 is disposed in other manners, which will not be described herein.
Referring to fig. 9, in one embodiment of the present application, the blood back transfusion unit further includes a second blood bag 5 disposed under the first blood bag 3 and communicating with the first blood bag 3 through a back transfusion line, since blood has fluidity, blood in the first blood bag 3 can enter the second blood bag 5 under the action of gravity and atmospheric pressure, the blood transfusion device 6 communicates with the second blood bag 5, blood entering the second blood bag 5 can enter the human body through the blood transfusion device 6 under the action of gravity and atmospheric pressure, and blood in the first blood bag 3 can enter the second blood bag 5 under the action of gravity and atmospheric pressure, thereby reducing the amount of blood in the first blood bag 3, and further avoiding the occurrence of the situation that the filtering effect of the first filter screen 4 is affected due to the fact that the amount of blood in the first blood bag 3 is large; meanwhile, when the blood is pumped into the first blood bag 3 by the blood back-transfusion pump 8, fluctuation of blood in the first blood bag 3 can be caused, and the blood pumped into the first blood bag 3 by the blood back-transfusion pump 8 can enter a human body through the blood transfusion device 6 after entering the second blood bag 5 through the arranged second blood bag 5, the blood back-transfusion pump 8 has small influence on blood flow in the second blood bag 5, so that the blood in the second blood bag 5 can stably and safely enter the human body through the blood transfusion device 6, and the blood transfusion safety is improved.
Referring to fig. 9, in one embodiment of the present application, the blood back infusion unit further includes an anticoagulant syringe 701 in communication with the second blood bag 5 and a rocking mixing device 702 connected to the second blood bag 5 and capable of moving the second blood bag 5.
When the operation time is long, anticoagulant can be added into the blood in the second blood bag 5 through the anticoagulant injection tube 701, and the blood and the anticoagulant can be uniformly mixed through the swinging mixer 702, so that the blood transfusion safety is ensured.
Those skilled in the art will understand that there are various ways to add anticoagulant to the anticoagulant syringe 701, such as infusion of anticoagulant into the anticoagulant syringe 701 through a infusion bottle and a disposable infusion set, and the description thereof will be omitted.
The present application provides a blood return pump 8, described in more detail below.
Referring to fig. 11 and 12, the present application provides a volumetric blood back-transfusion pump, which comprises a piston cylinder 802 and a piston 801 capable of reciprocating in the piston cylinder 802, and a pump body 804 having a pump cavity 805, wherein the pump body 804 is provided with a mounting port communicated with the pump cavity 805, the pump cavity 805 is communicated with the piston cylinder 802 through the mounting port, an elastic diaphragm 809 is arranged at the communication place between the pump cavity 805 and the piston cylinder 802, the elastic diaphragm 809 seals the communication place between the pump cavity 805 and the piston cylinder 802, namely the elastic diaphragm 809 seals the mounting port, the elastic diaphragm 809 is connected with the piston 801, a pump cavity inlet 806 of the pump body 804 is communicated with a filtering device 2 through a one-way valve 808, a pump cavity outlet 807 of the pump body 804 is communicated with a first blood bag 3 through a one-way valve 808, when the piston 801 moves downwards in the piston cylinder 802 (referring to the upper and lower parts of fig. 11), the piston working cavity 805 is enlarged, the elastic diaphragm 809 is stretched by the piston 801, the volume of the pump cavity 805 is enlarged, thereby negative pressure is generated in the pump cavity 805, the one-way valve 808 at the pump cavity inlet 806 is opened, the filtering device 2 is opened, and the blood bag 803 is not closed, and the blood bag is discharged from the pump cavity 803; when the piston 801 moves upward in the piston cylinder 802 (referring to the up-down direction of fig. 11), the piston working chamber 803 becomes smaller, the elastic membrane 809 is pressed by the piston 801, the volume of the pump chamber 805 becomes smaller, the pressure in the pump chamber 805 increases, the one-way valve 808 at the pump chamber outlet 807 opens, blood in the pump chamber 805 enters the first blood bag 3, and the one-way valve 808 at the pump chamber inlet 806 closes, so that blood in the pump chamber 805 cannot enter the filter device 2, and the piston 801 reciprocates in the piston cylinder 802, thereby realizing the flow of blood from the thrombus aspiration catheter 1 into the first blood bag 3 through the filter device 2 and the blood return pump 8 in sequence.
Those skilled in the art will appreciate that the above-mentioned manner of fixing the one-way valve 808 at the pump cavity inlet 806 and the pump cavity outlet 807 has various manners, for example, the one-way valve 808 is connected with the pump body 804 through threads, which are not described herein again; there are various ways to drive the piston 801 to reciprocate in the piston cylinder 802, for example, the piston 801 reciprocates in the piston cylinder 802 by matching a motor and a link mechanism, please refer to fig. 11, which is not described herein.
As can be appreciated by those skilled in the art, the first blood bag 3 and the second blood bag 5 in the blood feedback unit can be set at the same time, or only one of them can be set, for example, when only the first blood bag 3 is set, the blood feedback pump 8 is communicated with the first blood bag 3 and can pump blood into the first blood bag 3, and the blood in the first blood bag 3 directly enters the human body through the blood transfusion device; when only the second blood bag 5 is provided, the blood return pump 8 is communicated with the second blood bag 5 and pumps blood into the second blood bag 5, blood in the second blood bag 5 is input into a human body through a blood transfusion device, and simultaneously an anticoagulant injection tube 701 communicated with the second blood bag 5 and a swing mixing instrument 702 connected with the second blood bag 5 are selectively provided.
It should be understood that although the present disclosure has been described in terms of various embodiments, not every embodiment is intended to include only a single embodiment, and such description is for clarity only, and those skilled in the art will recognize that the embodiments described herein may be suitably combined to form other embodiments as would be understood by those skilled in the art.
The above list of detailed descriptions is only specific to practical examples of the present application, and they are not intended to limit the scope of the present application, and all equivalent embodiments or modifications, such as combinations, divisions or repetitions of features, without departing from the technical spirit of the present application are included in the scope of the present application.
Claims (10)
1. An intravenous catheter stopper and autologous blood return device, comprising:
a thrombus aspiration catheter having a first end extending into a venous vessel of a patient;
the filtering device is communicated with the thrombus suction catheter, and a filter screen capable of retaining thrombus is arranged in the filtering device;
a blood feedback unit for collecting venous blood received after passing through the filtering device;
a blood return pump for continuously providing a force to cause blood to flow from the thrombus aspiration catheter into the blood return unit;
A blood transfusion device, the first end of which is communicated with the blood feedback unit, and the second end of which can extend into a vein of a patient;
the reinfusion pipeline is used for sequentially communicating the thrombus suction catheter, the filtering device, the blood reinfusion pump, the blood reinfusion unit and the blood transfusion device;
the blood can enter the filtering device through the thrombus suction catheter in real time under the suction effect of the blood feedback pump, the thrombus in the blood sucked through the thrombus suction catheter is filtered and remained by the filtering device, the blood filtered by the filtering device can enter the blood feedback unit in real time under the pumping effect of the blood feedback pump, and the blood entering the blood feedback unit is input into a human body through the blood transfusion device in real time under the action of gravity and atmospheric pressure.
2. The venous catheter thrombus and autologous blood return device according to claim 1, wherein the filtering device comprises a filtering shell and a thrombus filtering screen, wherein the thrombus filtering screen divides an inner cavity of the filtering shell into a liquid inlet cavity and a liquid outlet cavity, the thrombus sucking catheter is communicated with the liquid inlet cavity through a liquid inlet hole formed in the filtering shell, the liquid outlet cavity is communicated with the blood return pump through a liquid outlet hole formed in the filtering shell, and the thrombus filtering screen can filter blood entering the liquid outlet cavity from the liquid inlet cavity so that thrombus in the blood can be remained in the liquid inlet cavity; the liquid outlet cavity is a cavity which completely covers the thrombus filter screen.
3. The intravenous catheter stopper and autologous blood back transfusion device according to claim 2, wherein the filtering shell is cylindrical, the liquid inlet hole is arranged at one end of the filtering shell, and the liquid outlet hole is arranged at the other end of the filtering shell;
the thrombus filter screen encloses into and has the cylindric cavity, follows the inlet opening is directional the direction of play liquid hole, the cross-sectional area of the cavity that the thrombus filter screen encloses reduces gradually.
4. The venous catheter and autologous blood back transfusion device according to claim 3, wherein the inner wall of the filtering shell comprises a liquid outlet wall arranged in the liquid outlet cavity and surrounding the thrombus filter screen, the cross-sectional area of a cavity surrounded by the liquid outlet wall is gradually reduced along the direction that the liquid inlet hole points to the liquid outlet hole.
5. The intravenous catheter stopper and autologous blood return device according to claim 2, wherein,
the filtering device also comprises a working piece arranged in the liquid inlet cavity so as to reduce the volume of the liquid inlet cavity, and the arrangement of the working piece can not influence the retention and accommodation of thrombus by the liquid inlet cavity;
the working piece comprises a diversion part which is arranged opposite to the liquid inlet hole and has a semicircular longitudinal section and a filling part with an extending direction facing the liquid outlet hole;
The blood entering the liquid inlet cavity through the liquid inlet hole can be contacted with the shunt part and can reach the thrombus filter screen under the dispersion action of the shunt part;
the filling part extends into a cavity surrounded by the thrombus filter screen.
6. The venous catheter stopper and autologous blood back transfusion device according to claim 1, wherein the blood back transfusion unit comprises a first blood bag, the first blood bag comprises a first filter screen dividing an inner cavity of the first blood bag into a filter cavity and a blood storage cavity, the filter cavity is communicated with the blood back transfusion pump, the blood storage cavity is communicated with the blood transfusion device, blood entering the filter cavity can enter the blood storage cavity after being filtered by the first filter screen, and blood entering the blood storage cavity can enter a human body through the blood transfusion device under the action of gravity and atmospheric pressure.
7. The intravenous catheter stopper and autologous blood return device of claim 1 wherein the blood return unit comprises a second blood bag in communication with an anticoagulant syringe;
the swing mixing instrument is connected with the second blood bag and can drive the second blood bag to move.
8. The venous catheter thrombus and autologous blood back-transfusion device according to claim 1, wherein the blood back-transfusion unit comprises a first blood bag and a second blood bag, the first blood bag is communicated with the blood back-transfusion pump through the back-transfusion pipeline, the second blood bag is arranged below the first blood bag and is communicated with the first blood bag through the back-transfusion pipeline, so that blood in the first blood bag can enter the second blood bag under the action of gravity and atmospheric pressure, and the blood transfusion device is communicated with the second blood bag, and blood in the second blood bag can enter a human body through the blood transfusion device under the action of gravity and atmospheric pressure.
9. The intravenous catheter stopper and autologous blood return device according to claim 1, wherein,
the blood feedback pump comprises a pump body provided with a pump cavity inlet and a pump cavity outlet;
the pump cavity of the pump body is communicated with the filtering device through the pump cavity inlet and the return pipeline, and is communicated with the blood return unit through the pump cavity outlet and the return pipeline, and a one-way valve is arranged at the pump cavity inlet and the pump cavity outlet;
the pump body be equipped with the installing port of pump chamber intercommunication, installing port department is equipped with the elastic diaphragm, when the elastic diaphragm was stretched, pump chamber volume grow, the one-way valve of pump chamber import department is opened, the one-way valve of pump chamber exit is closed, blood is from filter equipment gets into the pump chamber, when the elastic diaphragm is extrudeed, pump chamber volume reduces, the one-way valve of pump chamber import department is closed, the one-way valve of pump chamber exit is opened, blood is from the pump chamber gets into the blood feedback unit.
10. The venous catheter suction plug and autologous blood return device of claim 1 wherein the thrombus aspiration catheter includes a main line and a branch line in communication with the main line through which a balloon can enter the main line for entry into the body.
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| CN202311142515.0A CN116869612B (en) | 2023-09-06 | 2023-09-06 | Venous catheter suction plug and autologous blood feedback device |
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| CN202311142515.0A CN116869612B (en) | 2023-09-06 | 2023-09-06 | Venous catheter suction plug and autologous blood feedback device |
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| CN116869612B CN116869612B (en) | 2023-12-12 |
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| CN208693889U (en) * | 2017-12-28 | 2019-04-05 | 北京新科以仁科技发展有限公司 | A kind of self blood blood sampling refluxing device of three oxygen |
| CN110152090A (en) * | 2019-06-18 | 2019-08-23 | 长沙医学院 | A kind of transfusion set of self blood supply circulating purification |
| CN218420539U (en) * | 2022-01-26 | 2023-02-03 | 柳州市工人医院 | Simple autoblood recovery device |
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| CN116869612B (en) | 2023-12-12 |
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