NL2030451A - Blood pump for percutaneous insertion into patient blood vessel - Google Patents
Blood pump for percutaneous insertion into patient blood vessel Download PDFInfo
- Publication number
- NL2030451A NL2030451A NL2030451A NL2030451A NL2030451A NL 2030451 A NL2030451 A NL 2030451A NL 2030451 A NL2030451 A NL 2030451A NL 2030451 A NL2030451 A NL 2030451A NL 2030451 A NL2030451 A NL 2030451A
- Authority
- NL
- Netherlands
- Prior art keywords
- blood
- catheter
- tube
- flexible cannula
- patient
- Prior art date
Links
- 239000008280 blood Substances 0.000 title claims abstract description 46
- 210000004369 blood Anatomy 0.000 title claims abstract description 46
- 210000004204 blood vessel Anatomy 0.000 title claims abstract description 19
- 238000003780 insertion Methods 0.000 title claims abstract description 15
- 230000037431 insertion Effects 0.000 title claims abstract description 15
- 238000004140 cleaning Methods 0.000 claims abstract description 25
- 239000012530 fluid Substances 0.000 claims abstract description 7
- 238000005086 pumping Methods 0.000 claims abstract description 6
- 239000004744 fabric Substances 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000004745 nonwoven fabric Substances 0.000 claims description 3
- 239000012781 shape memory material Substances 0.000 claims description 3
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 3
- 239000002759 woven fabric Substances 0.000 claims description 3
- 229910001000 nickel titanium Inorganic materials 0.000 claims description 2
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 claims description 2
- 239000012459 cleaning agent Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 9
- 238000009434 installation Methods 0.000 abstract description 3
- 239000013307 optical fiber Substances 0.000 abstract description 2
- 230000017531 blood circulation Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 229920006264 polyurethane film Polymers 0.000 description 3
- 210000001765 aortic valve Anatomy 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 229910052729 chemical element Inorganic materials 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 210000005240 left ventricle Anatomy 0.000 description 2
- 230000002861 ventricular Effects 0.000 description 2
- 206010007556 Cardiac failure acute Diseases 0.000 description 1
- YUBJPYNSGLJZPQ-UHFFFAOYSA-N Dithiopyr Chemical compound CSC(=O)C1=C(C(F)F)N=C(C(F)(F)F)C(C(=O)SC)=C1CC(C)C YUBJPYNSGLJZPQ-UHFFFAOYSA-N 0.000 description 1
- 206010018910 Haemolysis Diseases 0.000 description 1
- HTTJABKRGRZYRN-UHFFFAOYSA-N Heparin Chemical compound OC1C(NC(=O)C)C(O)OC(COS(O)(=O)=O)C1OC1C(OS(O)(=O)=O)C(O)C(OC2C(C(OS(O)(=O)=O)C(OC3C(C(O)C(O)C(O3)C(O)=O)OS(O)(=O)=O)C(CO)O2)NS(O)(=O)=O)C(C(O)=O)O1 HTTJABKRGRZYRN-UHFFFAOYSA-N 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- 210000000709 aorta Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000747 cardiac effect Effects 0.000 description 1
- 206010007625 cardiogenic shock Diseases 0.000 description 1
- 230000000004 hemodynamic effect Effects 0.000 description 1
- 230000008588 hemolysis Effects 0.000 description 1
- 229960002897 heparin Drugs 0.000 description 1
- 229920000669 heparin Polymers 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/10—Location thereof with respect to the patient's body
- A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
- A61M60/126—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel
- A61M60/13—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel by means of a catheter allowing explantation, e.g. catheter pumps temporarily introduced via the vascular system
-
- 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
- A61M25/00—Catheters; Hollow probes
- A61M25/0009—Making of catheters or other medical or surgical tubes
- A61M25/0012—Making of catheters or other medical or surgical tubes with embedded structures, e.g. coils, braids, meshes, strands or radiopaque coils
-
- 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
- A61M25/00—Catheters; Hollow probes
- A61M25/0043—Catheters; Hollow probes characterised by structural features
- A61M25/005—Catheters; Hollow probes characterised by structural features with embedded materials for reinforcement, e.g. wires, coils, braids
-
- 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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/20—Type thereof
- A61M60/205—Non-positive displacement blood pumps
- A61M60/216—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
- A61M60/237—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller the blood flow through the rotating member having mainly axial components, e.g. axial flow pumps
-
- 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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/40—Details relating to driving
- A61M60/403—Details relating to driving for non-positive displacement blood pumps
- A61M60/408—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being mechanical, e.g. transmitted by a shaft or cable
- A61M60/411—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being mechanical, e.g. transmitted by a shaft or cable generated by an electromotor
- A61M60/416—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being mechanical, e.g. transmitted by a shaft or cable generated by an electromotor transmitted directly by the motor rotor drive shaft
-
- 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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/80—Constructional details other than related to driving
- A61M60/802—Constructional details other than related to driving of non-positive displacement blood pumps
- A61M60/827—Sealings between moving parts
- A61M60/829—Sealings between moving parts having a purge fluid supply
-
- 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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/80—Constructional details other than related to driving
- A61M60/855—Constructional details other than related to driving of implantable pumps or pumping devices
- A61M60/871—Energy supply devices; Converters therefor
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Mechanical Engineering (AREA)
- Cardiology (AREA)
- Biophysics (AREA)
- Pulmonology (AREA)
- Vascular Medicine (AREA)
- External Artificial Organs (AREA)
Abstract
UITTREKSEL The utility model relates to the field of medical device technique and discloses a blood, pump for percutaneous insertion into a patient's blood vessel, comprising a catheter and a pumping installation attached, to the said catheter, the said catheter 5 extending along the longitudinal axis and having a lumen in which an electrical wire and a cleaning tube are provided extending from the proximal to the distal end, the cleaning tube being constructed to receive the pressurized fluid, and the said lumen having a flexible cannula in which the electrical wire and/or 10 cleaning tube is provided. The flexible cannula is used to accommodate the electrical wire, optical fiber and cleaning tube, and then it is placed in the catheter, thus improving the overall flexural properties of the catheter, facilitating resistance to radial deformation and providing structural support for the smooth l5 operation of the catheter in the blood vessel.
Description
TECHNICAL FIELD The utility model relates to the field of medical device technique, in particular to a blood pump for percutaneous inser- tion into a patient's blood vessel.
BACKGROUND ART Blood pumps, also known as mechanical blood circulation sup- port device or ventricular assist device, can be introduced percu- taneously into the heart and can be so constructed that it assists or replaces the natural cardiac pumping function by circulatory or continuous pumping of blood to provide hemodynamic support for cardiogenic shock and acute heart failure.
The prior art is the technical scheme adopted by the patent with a Chinese Patent Publication No. of CN202022033733.9, which include a pigtail tube, a blood inflow port, a blood flow channel, a blood outflow port, a motor and an extension tube which are con- nected and fixed in turn, with the said pigtail tube, blood inflow port, blood flow channel, blood outflow port, motor and extension tube covered with polyurethane film on the outer side, and a blood inlet and a blood outlet provided at the polyurethane films corre- sponding to the blood inflow port and the blood outflow port re- spectively. The surface of the heart assist device is covered with a polyurethane film that extends from the pigtail tube to the ex- tension tube and is hollowed out at the positions corresponding to the blood inflow port and blood outflow port to form the blood in- let and blood outlet, so that the risk of component fall off is completely eliminated and the safety of using this heart assist device is greatly increased.
The motor is located inside the motor housing, with a clear- ance formed between the motor's rotating shaft and the motor hous- ing. Blood can enter the motor housing through the clearance and bring about adverse effects such as thrombosis and hemolysis. A cleaning tube is so set that it extends from the outside into the motor housing through the catheter, and the cleaning fluid, such as heparin, can push out the blood at the clearance by flowing in the motor housing so as to prevent the blood from entering the housing. However, due to the tortuous path of the blood vessels, radial deformation, such as bending, may occur in the extension tube during the process of pushing the blood pump into the heart, resulting in obstruction of the flow of cleaning fluid in the cleaning tube and adversely affecting the function of the blood pump.
SUMMARY In response to the problems in the prior art, the utility model aims to provide a blood pump for percutaneous insertion into a patient's blood vessel.
The technical problem to be solved by the utility model is solved using the following technical scheme: a blood pump for per- cutaneous insertion into a patient's blood vessel, comprising a catheter and a pumping installation attached to the said catheter, the said catheter extending along the longitudinal axis and having a lumen in which an electrical wire and a cleaning tube are pro- vided extending from the proximal to the distal end, the cleaning tube being constructed to receive the pressurized fluid, and the said lumen having a flexible cannula in which the electrical wire and/or cleaning tube is provided.
Preferably, the said flexible cannula is of spiral structure or porous three-dimensional structure.
Preferably, the said flexible cannula is a spiral coil or a rubber tube or a braided tube or a hollowed-out tube. Preferably, the said flexible cannula comprises a shape memory material, preferably a shape memory alloy, and more prefer- ably Nitinol.
Preferably, the said braided tube is made of knitted fabric, knotted fabric, woven fabric or non-woven fabric. Preferably, the said flexible cannula extends intermittently or continuously in the lumen.
Preferably, the said flexible cannula has an external dimen- sion suitable for the catheter passing through and an internal di-
mension capable of accommodating the electrical wire and/or clean- ing tube.
The beneficial effects of the utility model are as follows: In the utility model, the flexible cannula is used to accom- modate the electrical wire and cleaning tube, and then it is placed in the extension tube, thus improving the overall flexural properties of the extension tube, facilitating resistance to radi- al deformation and providing structural support for the smooth op- eration of the extension tube in the blood vessel.
BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the technical scheme in the utility model embodiments, the following is a brief descrip- tion of the attached figures to be used in the description of the embodiments. It is obvious that the following attached figures in the description are only some embodiments of the utility model and, for a person with ordinary skill in the field, other attached figures can be obtained according to these attached figures with- out creative work.
Figure 1 is a structural diagram of a blood pump for percuta- neous insertion into a patient's blood vessel in the utility mod- el; Figure 2 is a schematic diagram for the internal structure of the motor housing in the utility model.
Figure 3 is a partial enlarged drawing of Part A in Figure 2 of the utility model.
Figure 4 is a structural schematic diagram for the longitudi- nal section of the extension tube in the utility model. Figure 5 is a partial enlarged drawing of Part B in Figure 4 of the utility model.
Figure 6 is a structural schematic diagram for the cross sec- tion of the flexible cannula in the utility model.
In the figures: 101. catheter; 102. motor housing; 103. blood outflow port; 104. blood flow channel; 105. blood inflow port;
106. pigtail tube; 201. flexible cannula; 202. cleaning tube; 203. electric wire; 301. motor; 302. axial impeller.
DETAILED DESCRIPTION OF THE EMBODIMENTS In order to make the technical means, creative features, pur- pose and efficacy of the utility model is easy to understand, the utility model is further elaborated in combination with the spe- cific figures.
Embodiment 1 As shown in Figure 1, in the prior art, the complete blood pump suitable for left ventricular assistance includes a pigtail tube 106, a blood inflow port 105, a blood flow channel 104, a blood outflow port 103, a motor housing 102 and an extension tube 101 connected and fixed in turn, a motor 301 mounted inside the motor housing 102, the rotating shaft of the motor 301 running through the motor 301 housing and fixedly connected to the axial impeller 302 connected in a rotatable manner inside the blood flow channel 104, and the electric wire 204, optical fiber 203 and cleaning tube 202 arranged inside the extension tube 101. When the blood pump is in use, the blood flow channel 104 can extend and pass the aortic valve so that the blood inflow port 105 and pigtail tube 106 cross the aortic valve and are positioned in the left ventricle; the motor 301 drives the axial impeller 302 to rotate and, under this driving effect, the blood in the left ven- tricle is pumped into the pump at the blood inflow port 105 and flows out of the pump via the blood outflow port 103 and flows in- to the aorta; radial deformation, such as bending, may occur in the extension tube during the process of pushing the blood pump into the heart, resulting in obstruction of the flow of cleaning fluid in the cleaning tube and adversely affecting the function of the blood pump.
Embodiment 2 As shown in Figures 1-6, a blood pump for percutaneous inser- tion into a patient's blood vessel comprises a catheter 101 and a pumping installation attached to the said catheter 101, the said catheter 101 extending along the longitudinal axis and having a lumen in which an electrical wire 204 and a cleaning tube 202 are provided extending from the proximal to the distal end, and the cleaning tube 202 being constructed to receive the pressurized fluid, inside the said lumen a flexible cannula 201 set, and the electrical wire 204 and/or cleaning tube 202 set in the flexible cannula 201.
The said flexible cannula 201 is of spiral structure or po- rous three-dimensional structure.
5 The said flexible cannula 201 is a spiral coil or a rubber tube or a braided tube or a hollowed-out tube.
The said flexible cannula 201 comprises a shape memory mate- rial, preferably a shape memory alloy, and more preferably Nitin- ol.
The said braided tube is made of knitted fabric, knotted fab- ric, woven fabric or non-woven fabric.
The said flexible cannula 201 extends intermittently or con- tinuously in the lumen.
The said flexible cannula 201 has an external dimension suit- able for the catheter passing through and an internal dimension capable of accommodating the electrical wire 204 and/or cleaning tube 202.
The flexible cannula 201 is used to accommodate the electri- cal wire 203 and cleaning tube 202, and then it is placed in the catheter 101, thus improving the overall flexural properties of the catheter 101, facilitating resistance to radial deformation and providing structural support for the smooth operation of the catheter 101 in the blood vessel.
It is important to note that in this document, terms such as first and second are used only to distinguish one entity or opera- tion from another and do not necessarily require or imply any ac- tual relationship or order between these entities or operations. Further, the terms "include", "comprise" or any other variation thereof are intended to cover non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of ele- ments includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, meth- od, article, or apparatus. Without further limitation, the ele- ments defined by the statement "including a ......" do not pre- clude the existence of additional identical elements in such pro- cess, method, article or apparatus as includes the said elements.
The above shows and describes the basic philosophy, main characteristics and advantages of the utility model.
A person skilled in the art should understand that the utility model is not limited by the above embodiments.
The above embodiments and those described in the specification only illustrate the philosophy of the utility model, and there will be various changes and improve- ments to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model for which protection is requested.
The utility model claims a scope of protection defined by the appended claims and their equivalents.
Claims (7)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122783525.5U CN218485008U (en) | 2021-11-15 | 2021-11-15 | Blood pump for percutaneous insertion into blood vessel of patient |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NL2030451A true NL2030451A (en) | 2022-05-16 |
| NL2030451B1 NL2030451B1 (en) | 2024-11-25 |
Family
ID=81607272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL2030451A NL2030451B1 (en) | 2021-11-15 | 2022-01-06 | Blood pump for percutaneous insertion into patient blood vessel |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN218485008U (en) |
| NL (1) | NL2030451B1 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030176835A1 (en) * | 2002-03-15 | 2003-09-18 | Sun Medical Technology Research Corporation | Protector and blood pump system |
| AU2013254644A1 (en) * | 2012-04-27 | 2014-11-13 | Abiomed Europe Gmbh | Catheter system and intravascular blood pump comprising said catheter system |
| US20180064862A1 (en) * | 2013-03-13 | 2018-03-08 | Tc1 Llc | Sheath assembly for catheter pump |
| WO2018202775A1 (en) * | 2017-05-04 | 2018-11-08 | Abiomed Europe Gmbh | Blood pump with reinforced catheter |
| WO2020018742A1 (en) * | 2018-07-19 | 2020-01-23 | Abiomed, Inc. | Systems and methods for reducing leaks from a catheter |
| WO2020120342A1 (en) * | 2018-12-11 | 2020-06-18 | Abiomed Europe Gmbh | Catheter for intravascular blood pump |
| WO2020152611A2 (en) * | 2019-01-24 | 2020-07-30 | Magenta Medical Ltd | Ventricular assist device |
-
2021
- 2021-11-15 CN CN202122783525.5U patent/CN218485008U/en active Active
-
2022
- 2022-01-06 NL NL2030451A patent/NL2030451B1/en active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030176835A1 (en) * | 2002-03-15 | 2003-09-18 | Sun Medical Technology Research Corporation | Protector and blood pump system |
| AU2013254644A1 (en) * | 2012-04-27 | 2014-11-13 | Abiomed Europe Gmbh | Catheter system and intravascular blood pump comprising said catheter system |
| US20180064862A1 (en) * | 2013-03-13 | 2018-03-08 | Tc1 Llc | Sheath assembly for catheter pump |
| WO2018202775A1 (en) * | 2017-05-04 | 2018-11-08 | Abiomed Europe Gmbh | Blood pump with reinforced catheter |
| WO2020018742A1 (en) * | 2018-07-19 | 2020-01-23 | Abiomed, Inc. | Systems and methods for reducing leaks from a catheter |
| WO2020120342A1 (en) * | 2018-12-11 | 2020-06-18 | Abiomed Europe Gmbh | Catheter for intravascular blood pump |
| WO2020152611A2 (en) * | 2019-01-24 | 2020-07-30 | Magenta Medical Ltd | Ventricular assist device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN218485008U (en) | 2023-02-17 |
| NL2030451B1 (en) | 2024-11-25 |
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