WO2019158791A1 - Dispositivo para la eliminación selectiva de moléculas de tejidos o fluidos - Google Patents
Dispositivo para la eliminación selectiva de moléculas de tejidos o fluidos Download PDFInfo
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- WO2019158791A1 WO2019158791A1 PCT/ES2019/070038 ES2019070038W WO2019158791A1 WO 2019158791 A1 WO2019158791 A1 WO 2019158791A1 ES 2019070038 W ES2019070038 W ES 2019070038W WO 2019158791 A1 WO2019158791 A1 WO 2019158791A1
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- molecules
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Classifications
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- A61B10/0045—Devices for taking samples of body liquids
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- A61B10/02—Instruments for taking cell samples or for biopsy
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- 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
- A61M1/30—Single needle dialysis ; Reciprocating systems, alternately withdrawing blood from and returning it to the patient, e.g. single-lumen-needle dialysis or single needle systems for hemofiltration or pheresis
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Definitions
- the present invention relates to an implantable device for the selective removal of tissue or fluid molecules, whose purpose is to allow the selective removal of a particular molecule of interest (target molecule) from any type of tissue or fluid solution. , including tissues or biological fluids.
- the device of the invention additionally allows to extract the fluid in which the device is located as well as to be able to administer substances in it (for example to administer enzymes that favor the degradation of deposits of the target molecule).
- plasmaphereris or plasma exchange
- plasma exchange consist of the separation of the cellular component and blood fluid (plasma) that is processed to remove, more or less selectively, some of its components. After treatment, the plasma is reinfused.
- plasmapheresis and plasma exchange are used as synonyms, although in the vast majority of cases the plasma separated from the blood is removed and replaced with the same volume of a replacement solution.
- These techniques suffer from specificity (selectivity), that is, they eliminate a large number of different substances, among which antibodies, immunocomplexes, cryoglobulins, complement components, lipoproteins, protein-bound toxins and other unknown substances can be found. .
- specificity that is, they eliminate a large number of different substances, among which antibodies, immunocomplexes, cryoglobulins, complement components, lipoproteins, protein-bound toxins and other unknown substances can be found. .
- the exact mechanism through which plasmapheresis exerts its therapeutic effect is unknown.
- Filters / columns for the elimination of endotoxins these are extracorporeal devices used to eliminate endotoxins from plasma by hemoperfusion / adsorption. They are based on the use of adsorbents formed by resins or carbon capable of eliminating endogenous and
- Toraymyxin® incorporates polymyxin B (antibiotic that is characterized by generating a strong bond with circulating endotoxin in the bloodstream) in polystyrene and polypropylene fibers.
- LPS adsorber (Alteco Medical AB): This device consists of two porous polyethylene discs covered with a synthetic peptide that has a high endotoxin absorption capacity.
- Oxiris (Gambro-Hospal-Baxter): it is a polysulfone and polyacrylonitrile filter capable of adsorbing proinflammatory cytokines and endotoxins (limited clinical experience).
- MATISSE-Fresenius system it is based on the affinity of endotoxins for human albumin. This system incorporates albumin in a polymethacrylate filter. Clinical safety and tolerance studies performed. Pending demonstrating clinical efficacy.
- Cytosorb® porous polystyrene and divinylbenzene material that reduces circulating cytokine levels (I L-1 ra, IL-6, IL-10, IL-8, IL-1) in animal models and in humans with severe sepsis or shock septic. Studies conducted with few patients.
- CTR column it is a column formed by cellulose combined with a hydrophobic organic ligand.
- the CTR column makes it possible to eliminate cytokines and enterotoxins with molecular weights between 5000 and 50,000 Da. In rat studies with satisfactory results.
- DALI® This device allows direct adsorption of lipoproteins and LDL-cholesterol in patients with refractory hypercholesterolemia conventional treatments.
- TheraSorb TM LDL therapy system (Miltenyi Biotec): consists of two reusable adsorption systems (formed by sepharose), available in different sizes, which eliminate LDL, Lp (a) and VLDL cholesterol from the patient's blood.
- the aforementioned devices include some selectivity, certainly greater than the generic techniques of traditional plasmapheresis or extracorporeal filtration.
- selectivity the systems based on the antigen-antibody reaction that introduce an important element of selectivity (specificity), and makes them daunting tools for the detection, capture and elimination of macromolecules with antigenic properties.
- Extracorporeal immunoadsorption consists in the collection of the patient's plasma (by an apheresis procedure), and its circulation through a column that manages to selectively eliminate circulating immunocomplexes and IgG.
- Therapeutic elimination of antibodies is used in clinical practice to treat a wide variety of autoimmune diseases and organ transplants. Among them are:
- Immunosorba® (Fresenius Medical Care): The column contains highly purified protein A immobilized on a sepharose substrate. Immunocomplexes bind to protein A and, therefore, are selectively removed from plasma. Plasma can be returned to the patient, thus eliminating the need for a plasma exchange.
- GLOBAFFIN® (Fresenius Medical Care): sepharose columns in which the synthetic peptide GAM-146 is immobilized, with affinity for antibodies.
- Ig-Therasorb® (Miltenyi Biotec, Bergisch-Gladbach): During an apheresis treatment, two reusable cartridges selectively remove antibodies and immune complexes from the patient's blood. These are columns coated with human anti-lg (sheep).
- Selesorb® Kerat Medical Products: Specifically designed for the treatment of Systemic Lupus Erythematosus.
- SELESORB® is designed to eliminate anti-DNA antibodies, anti-cardiolipin antibodies and / or immune complexes of patients with SLE.
- the SELESORB® adsorption mechanism is based on chemoadsorption performed by dextran sulfate immobilized in cellulose beads.
- the Asahi Kasei Medical (Japan) commercial house also has specific filters for neurological diseases (Myasthenia gravis, Guillain-Barré syndrome, Chronic inflammatory demyelinating polyneuropathy, multiple sclerosis), for autoimmune diseases and for the selective elimination of bilirubin and bile acids.
- neurological diseases Myasthenia gravis, Guillain-Barré syndrome, Chronic inflammatory demyelinating polyneuropathy, multiple sclerosis
- autoimmune diseases for the selective elimination of bilirubin and bile acids.
- SAF hollow fiber-specific antibody filter
- the device of the invention allows the selective removal of molecules of interest in tissues or fluids based on a simple but highly effective solution.
- the device of the invention is constituted from a main catheter, whose distal end ends in a chamber whose walls have the peculiarity of being porous, with a pore size larger than the target molecule, but smaller than of the antibodies or aptamers intended to bind to said target molecule, thus acting as a semi-impermeable membrane or nanomembrane.
- the main catheter allows carrying a load of antibodies or aptamers through its surface end, which are retained in the chamber.
- the antibodies will bind, inside the chamber, to the target molecules, so that they will be retained inside the chamber.
- the operation of the device is achieved by the complementary action of specific binding molecules (antibodies or aptamers) directed against the target molecule inside the device with a nanoperforated membrane, whose pores are larger than the target molecule, but lower than that of antibodies.
- a second catheter Parallel to said catheter, and in communication with the main chamber described above, a second catheter is established, so that it communicates with said chamber through a nanoporous membrane of the same type.
- this catheter will have access to the free fluid of the administered antibodies, and with a concentration of target molecule lower than that present in the tissue, since in part it will have been retained in the main chamber due to the anti-bodies.
- the device includes a third catheter, completely independent of the previous two, which ends in a chamber, equally independent of the main chamber, whose walls are formed by a microporous membrane, allowing access to all of the tissue molecules or fluid, regardless of size.
- This catheter has the purpose of being able to extract the fluid in which the device is located and / or to be able to administer substances in it (for example to administer enzymes that favor the degradation of deposits of the target molecule).
- the distal end of the device will be implanted in the tissue, container or cavity that contains the fluid from which the target molecule is to be removed.
- the surface end of the three catheters can be located at any level that is accessible from the outside. For example, in a living being it can be left outside the organism, in which case it would be directly accessible, or under the skin in the subcutaneous cellular tissue, in which case each catheter would be covered by a capsule accessible from the outside by puncture.
- Figure 1 shows a schematic view in profile and section of a device for the selective removal of tissue molecules or fluids performed in accordance with the object of the invention.
- Figure 2. Shows a view of the device of the previous figure implanted in the lateral ventricle of the brain of a mouse, showing an enlarged detail in which the target molecules, natural antibodies and antibodies used to reduce the concentration are represented. of target molecules.
- the device for the selective removal of tissue molecules or fluids is constituted from a main catheter (1) that is inserted through the body surface (2) in question , until reaching the fluid (3) or tissue to be treated, fluid (3) or tissue in which a series of target molecules (4) are present, together with natural anti-bodies (5).
- the main catheter (1) is finished off in a chamber (7) in which a nanomembrane (8) is established, with a pore size larger than the target molecules (4), but smaller than the antibodies, both to the natural anti-bodies (5) present in the fluid or tissue, as to the specific anti-bodies or aptamers (6) that are introduced through the main catheter (1).
- the main catheter (7) allows a specific antibody load to be carried out.
- the target molecules (4) access the main chamber (7) where they are attacked by the specific anti-bodies or aptamers (6), intended to treat said target molecule.
- a large part of the target molecules (4) will be retained inside the main chamber (7) due to the effect of specific anti-bodies or aptamers (6), having provided that parallel to the main catheter and in communication with the main chamber, through a nanomembrane (8 ') of identical characteristics to the nanomembrane (8) described above, a second catheter (9) is established through which to extract the fluid treated, accessing said fluid free of the administered antibodies, and with a concentration of target molecule lower than that present in the tissue, since in part it will have been retained in the main chamber by effect of the anti-bodies.
- the antibody capacity When the antibody capacity has become saturated, it can be restarted by aspirating the contents of the main chamber (7) through the main catheter (1) and infusing a new load of specific antibodies (6).
- the device includes a third catheter (10), completely independent of the previous two, which ends in a secondary chamber (11), equally independent of the main chamber (7), whose walls are formed by a microporous membrane (12), allowing access to it of all tissue or fluid molecules, regardless of their size.
- This third catheter (10) has the purpose of being able to extract the fluid in which the device is located and / or to be able to administer substances in it (for example to administer enzymes that favor the degradation of deposits of the target molecule).
- Samples of the fluid (3) with its actual concentration of target molecules (4) and anti-bodies (5) can be extracted through the third catheter (10), while through the second catheter (9) the fluid ( 3) with a concentration of target molecule (4) lower than that of the original fluid.
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Hematology (AREA)
- Anesthesiology (AREA)
- Vascular Medicine (AREA)
- Surgery (AREA)
- Molecular Biology (AREA)
- Medical Informatics (AREA)
- Pathology (AREA)
- Cardiology (AREA)
- Urology & Nephrology (AREA)
- Biophysics (AREA)
- Pulmonology (AREA)
- Emergency Medicine (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- External Artificial Organs (AREA)
- Materials For Medical Uses (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020541421A JP7255899B2 (ja) | 2018-02-14 | 2019-01-28 | 組織または流体から分子を選択的に除去するためのデバイス |
PL19754457.0T PL3753598T3 (pl) | 2018-02-14 | 2019-01-28 | Urządzenie do selektywnego usuwania cząsteczek z tkanek lub płynów |
AU2019221715A AU2019221715B2 (en) | 2018-02-14 | 2019-01-28 | Device for the selective removal of molecules from tissues or fluids |
EP19754457.0A EP3753598B1 (en) | 2018-02-14 | 2019-01-28 | Device for the selective removal of molecules from tissues or fluids |
GB2010986.4A GB2583667B (en) | 2018-02-14 | 2019-01-28 | Device for selective removal of molecules from tissues or fluids |
CN201980010115.XA CN111655320B (zh) | 2018-02-14 | 2019-01-28 | 用于从组织或液体中选择性去除分子的装置 |
CA3088073A CA3088073A1 (en) | 2018-02-14 | 2019-01-28 | Device for the selective removal of molecules from tissues or fluids |
ES19754457T ES2935909T3 (es) | 2018-02-14 | 2019-01-28 | Dispositivo para la eliminación selectiva de moléculas de tejidos o fluidos |
US16/964,151 US11684746B2 (en) | 2018-02-14 | 2019-01-28 | Device for the selective removal of molecules from tissues or fluids |
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ES201830130A ES2722802B2 (es) | 2018-02-14 | 2018-02-14 | Dispositivo para la eliminacion selectiva de moleculas de tejidos o fluidos |
ESP201830130 | 2018-02-14 |
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WO2019158791A1 true WO2019158791A1 (es) | 2019-08-22 |
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PCT/ES2019/070038 WO2019158791A1 (es) | 2018-02-14 | 2019-01-28 | Dispositivo para la eliminación selectiva de moléculas de tejidos o fluidos |
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US (1) | US11684746B2 (es) |
EP (1) | EP3753598B1 (es) |
JP (1) | JP7255899B2 (es) |
CN (1) | CN111655320B (es) |
AU (1) | AU2019221715B2 (es) |
CA (1) | CA3088073A1 (es) |
ES (2) | ES2722802B2 (es) |
GB (1) | GB2583667B (es) |
PL (1) | PL3753598T3 (es) |
WO (1) | WO2019158791A1 (es) |
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JPH09509588A (ja) * | 1993-12-30 | 1997-09-30 | ボストン・サイエンティフィック・コーポレーション | 身体標本の採取 |
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JPH1033662A (ja) * | 1996-07-25 | 1998-02-10 | Kanegafuchi Chem Ind Co Ltd | 血液体外循環装置 |
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-
2018
- 2018-02-14 ES ES201830130A patent/ES2722802B2/es active Active
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2019
- 2019-01-28 JP JP2020541421A patent/JP7255899B2/ja active Active
- 2019-01-28 US US16/964,151 patent/US11684746B2/en active Active
- 2019-01-28 WO PCT/ES2019/070038 patent/WO2019158791A1/es active Application Filing
- 2019-01-28 ES ES19754457T patent/ES2935909T3/es active Active
- 2019-01-28 CA CA3088073A patent/CA3088073A1/en active Pending
- 2019-01-28 CN CN201980010115.XA patent/CN111655320B/zh active Active
- 2019-01-28 GB GB2010986.4A patent/GB2583667B/en active Active
- 2019-01-28 PL PL19754457.0T patent/PL3753598T3/pl unknown
- 2019-01-28 AU AU2019221715A patent/AU2019221715B2/en active Active
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WO1988006045A2 (en) * | 1987-02-21 | 1988-08-25 | Bissendorf Peptide Gmbh | Device for the removal of active substances locally applied against solid tumors |
WO2004083817A2 (en) * | 2003-03-18 | 2004-09-30 | Dyerx Medical Inc. | Methods and devices for retrieval of a medical agent from a physiological efferent fluid collection site |
WO2008157256A1 (en) * | 2007-06-13 | 2008-12-24 | Catharos Medical Systems, Inc. | Methods and devices for removal of a medical agent from a physiological efferent fluid collection site |
Also Published As
Publication number | Publication date |
---|---|
PL3753598T3 (pl) | 2023-03-20 |
CN111655320A (zh) | 2020-09-11 |
AU2019221715B2 (en) | 2024-01-18 |
CN111655320B (zh) | 2022-04-26 |
ES2722802B2 (es) | 2019-12-18 |
ES2935909T3 (es) | 2023-03-13 |
GB2583667A (en) | 2020-11-04 |
JP7255899B2 (ja) | 2023-04-11 |
GB2583667B (en) | 2022-02-23 |
GB202010986D0 (en) | 2020-09-02 |
US11684746B2 (en) | 2023-06-27 |
EP3753598B1 (en) | 2022-11-23 |
US20210030941A1 (en) | 2021-02-04 |
ES2722802A1 (es) | 2019-08-16 |
JP2021513383A (ja) | 2021-05-27 |
EP3753598A1 (en) | 2020-12-23 |
ES2935909T8 (es) | 2023-06-29 |
CA3088073A1 (en) | 2019-08-22 |
EP3753598A4 (en) | 2021-11-10 |
GB2583667A8 (en) | 2020-11-18 |
AU2019221715A1 (en) | 2020-07-30 |
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