WO2008077481A2 - Materialdepot zur abgabe eines antibakteriellen wirkstoffmaterials - Google Patents
Materialdepot zur abgabe eines antibakteriellen wirkstoffmaterials Download PDFInfo
- Publication number
- WO2008077481A2 WO2008077481A2 PCT/EP2007/010820 EP2007010820W WO2008077481A2 WO 2008077481 A2 WO2008077481 A2 WO 2008077481A2 EP 2007010820 W EP2007010820 W EP 2007010820W WO 2008077481 A2 WO2008077481 A2 WO 2008077481A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- material depot
- depot
- chain
- antibiotic
- antibacterial active
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/0012—Galenical forms characterised by the site of application
- A61K9/0019—Injectable compositions; Intramuscular, intravenous, arterial, subcutaneous administration; Compositions to be administered through the skin in an invasive manner
- A61K9/0024—Solid, semi-solid or solidifying implants, which are implanted or injected in body tissue
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
- A61K9/16—Agglomerates; Granulates; Microbeadlets ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction
- A61K9/1605—Excipients; Inactive ingredients
- A61K9/1629—Organic macromolecular compounds
- A61K9/1635—Organic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyvinyl pyrrolidone, poly(meth)acrylates
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
- A61K9/16—Agglomerates; Granulates; Microbeadlets ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction
- A61K9/1605—Excipients; Inactive ingredients
- A61K9/1629—Organic macromolecular compounds
- A61K9/1641—Organic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyethylene glycol, poloxamers
- A61K9/1647—Polyesters, e.g. poly(lactide-co-glycolide)
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
- A61K9/16—Agglomerates; Granulates; Microbeadlets ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction
- A61K9/1605—Excipients; Inactive ingredients
- A61K9/1629—Organic macromolecular compounds
- A61K9/1658—Proteins, e.g. albumin, gelatin
Definitions
- Material depot for dispensing an antibacterial active material for dispensing an antibacterial active material
- the invention relates to a material depot for dispensing an antibacterial active material in a human or animal body.
- Each surgical procedure involves contamination of the wound with germs. For example, if the attending physician or nurse carries no sterile gloves and does not perform disinfection sufficiently, it can lead to contamination with pathological germs that colonize the wound.
- Material depots that deliver the antibiotic to the environment, for example to the wound secretion and thus prevent infection or fight, are known from public prior use. Examples include the gentamicin polymethylmethacrylate (PMMA) chains, which ® under the term of Septopal chains to those skilled in the art. The Septopal ® chains have become the therapeutic standard in osteomyelitis therapy and are also used in the prevention of infection. The mixed with the antibiotic gentamycin and fixed on a wire acrylic beads to fight by the continuous delivery of the antibiotic on the spot the infection or prevent her.
- PMMA gentamicin polymethylmethacrylate
- Septopal ® chains at the site of infection allow for higher drug concentrations. It is known that the killing of the germs is not only due to the presence of the antibiotic in the environment surrounding the bacterium, but also to the local concentration of the antibiotic (antibiotics). tika mirror). The treatment with Septopal ® - chains is still effective when microbiological tests show a "simple" resistance to antibiotics, because in the bacteriological tests usually only those antibiotic concentrations are tested, as they can be achieved in the course of an intravenous therapy.
- the object of the invention is to provide a
- the invention solves this problem by a material depot having the features of claim 1.
- Advantageous embodiments of the invention are disclosed in the subclaims. According to claim 1, the surface of the material depot over which the antibacterial active material is dispensed into the human or animal body is greater than the envelope of the material depot.
- the Envelope refers to a closed area stretched around a body. In a cross-sectional view, the envelope touches every curve in a set of curves at a point. For example, the envelope of a sphere with a basic radius r and grooves extending into the interior of the sphere is determined by the sphere surface as it results from the basic radius (4 ⁇ r 2 ).
- the invention has recognized that the amount of an antibacterial active substance material that is released via the surface of the material depot is dependent on the content of the active ingredient material in the carrier or the loading of the carrier material with the active material material and predefines this content or the loading by the carrier material O upper limits are set.
- the invention has also recognized that the antibiotic is dissolved out of the carrier material only from the uppermost layer of the carrier material. Examinations of explanted Septopal ® chains have shown that the antibiotic material
- Gentamycin is released only from the few millimeters thick outer area of the PMMA spheres, while the deeper layers have consistent antibiotic proportions.
- the invention has further recognized that by increasing the surface of the material depot more antibiotic per unit time can be delivered, ie a higher antibiotic level can be achieved. An antibiotic underdose can be effectively counteracted.
- the high local antibiotic concentration leads to effective killing of not only the sensitive, but also partially resistant germs.
- the invention has also recognized that the material depot according to the invention does not lead to a possible local antibiotic overdose in the implantation area.
- the antibiotic released from the material reservoir into the wound fluid in the wound fluid is affected by the dynamics of the wound fluid, e.g. by changing the position of the patient or by muscle activity, is distributed and thus adjusted for the patient lowered antibiotic level. If an overdose can not be ruled out in individual cases or a delayed release of the antibiotic is desired, it is expedient to adjust the rate of antibiotic quantity delivery accordingly. This can be done by suitable proportions of the antibiotic in the material depot and / or in the material depot built-in additives that delay the release of the antibiotic. The rate of release can also be controlled by pressing the material deposit to different extents, or e.g. is foam-like.
- the enlargement of the surface of the material depot can take place through a great variety of surface structures, for example depressions, trough-shaped recesses, indentations and protuberances such as furrows, folds, slots, lamellae, honeycombs and bores.
- the furrows, folds and slots preferably run longitudinally in or on the surface of the material deposit.
- the surface structures do not damage, irritate or adversely affect the tissue on the spot.
- the material depot advantageously has no sharp edges. This is likewise advantageous in the removal of the material depot chain which will be described in more detail below since, when pulling out the chain, injury to the tissue, the nerves and vessels and subsequent bleeding can be largely avoided.
- the removal direction is predetermined by the pulling direction of the chain.
- the inventive arrangement of the grooves, folds and slots parallel to the intended direction of pull supports the unimpeded sliding out of the chain when pulling out of the wound.
- the depths or heights of the surface structures are expediently selected such that on the one hand the strength of the carrier material is not impaired and, for example, an undesired breakage of carrier material during implantation or explantation of the material depot or repositioning is avoided, and on the other hand the material thickness between the adjacent structures the material depot is so strong that the most effective possible drug delivery from the carrier material takes place in the wound.
- Slats i. long disks or sheets, especially if they are arranged parallel to each other with their surfaces parallel or approximately parallel to one another and connected to one another, over a very large surface and stability measured on the cost of materials.
- the material thickness between the adjacent structures of the material depot should preferably be only a few millimeters, preferably at most 5 mm. further preferably 3 mm, particularly preferably 1 to 3 mm.
- the structuring of the material depot according to the invention allows the surface of the material depot to be enveloped by at least a factor of 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9 or many times (at least by a factor of 2, 3, 4, 5, 6, 7, 8, 9, 10, 11-100, 100-200, 200-300, 300-400, 400-500, 500-600, 600-700, 700-800, 800- 900 or 900-1000).
- the antibacterial material is an antibiotic, with gentamycin being particularly useful or a disinfectant.
- other antibiotics for example, vanvomycin and / or clindamycin may also be used.
- the antibacterial material may be included in a resorbable carrier material (e.g., polyglycolide lactide or collagen) or in a non-resorbable material (e.g., PMMA).
- a resorbable carrier material e.g., polyglycolide lactide or collagen
- a non-resorbable material e.g., PMMA
- the material depot is on its surface, at least partially, open-pored. The open pores allow easier delivery of the antibacterial drug material in the wound.
- the geometric basic shape of the material deposit formed by the envelope is preferably a shape that is selected from the group consisting of cylinder, sphere, cone and the combination of these basic shapes, such as the drop shape.
- any basic form is preferred which allows the material depot to be gently implanted and / or explanted for the patient.
- “Gentle” means in particular that the wound opening for implanting and / or explanting the material depot can be kept as small as possible, but at the same time, however, a slight distance is guaranteed.
- the subject matter of the present invention is furthermore a material depot chain which has at least two material depots according to the invention as chain links.
- the chain links can be arranged on a central wire.
- the chain links may, for example, a spherical basic shape ® analogue known from the prior art Septopal chain, or a roller shape, such as a solid cylinder form having.
- the adjacent chain links may also have mutually corresponding surfaces. The surfaces may be formed, for example, convex-concave.
- FIG. 1 shows a spherical material depot according to the invention with grooves
- FIG. 2 shows a material depot chain with balls
- FIG 3 shows a material depot chain from a plurality of material depots in roll form with a convex / concave contact surface design.
- FIG. 1 shows a spherical material depot 1 with parallel grooves 2.
- the material depot 1 contains an antibacterial active material and releases it via its open-pore surface in a human or animal body (not shown).
- FIG. 2 shows a material depot chain 4 with a plurality of material depot balls 1 according to FIG. 1, which are fixed on a central wire 3.
- the material depots 1, 5 have grooves 2, which are arranged parallel to each other and in the pulling direction according to arrow A.
- FIG. 4 Another material depot chain 4 with a plurality of cylindrical material depots 6 fixed on a central wire 3 is shown in FIG.
- the cylindrical material depots 6 have corresponding concave-convex surfaces instead of the usual flat surfaces which are typical for a cylinder. As a result, even with a small distance between the adjacent tengliedern 6 a hinge-like movement of the chain links possible.
Landscapes
- Health & Medical Sciences (AREA)
- Pharmacology & Pharmacy (AREA)
- Veterinary Medicine (AREA)
- Chemical & Material Sciences (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Animal Behavior & Ethology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Epidemiology (AREA)
- Dermatology (AREA)
- Neurosurgery (AREA)
- Biomedical Technology (AREA)
- Oncology (AREA)
- Communicable Diseases (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Organic Chemistry (AREA)
- Materials For Medical Uses (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Medicinal Preparation (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP07856568.6A EP2101837B1 (de) | 2006-12-20 | 2007-12-11 | Materialdepotkette zur abgabe eines antibakteriellen wirkstoffmaterials |
| JP2009541833A JP5406036B2 (ja) | 2006-12-20 | 2007-12-11 | 抗菌活性剤放出用物質貯蔵体 |
| US12/520,810 US20100136080A1 (en) | 2006-12-20 | 2007-12-11 | Material depot for releasing an antibacterial active agent |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006060938.7 | 2006-12-20 | ||
| DE102006060938A DE102006060938A1 (de) | 2006-12-20 | 2006-12-20 | Materialdepot zur Abgabe eines antibakteriellen Wirkstoffmaterials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2008077481A2 true WO2008077481A2 (de) | 2008-07-03 |
| WO2008077481A3 WO2008077481A3 (de) | 2008-09-25 |
Family
ID=39431625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2007/010820 Ceased WO2008077481A2 (de) | 2006-12-20 | 2007-12-11 | Materialdepot zur abgabe eines antibakteriellen wirkstoffmaterials |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20100136080A1 (de) |
| EP (1) | EP2101837B1 (de) |
| JP (1) | JP5406036B2 (de) |
| DE (1) | DE102006060938A1 (de) |
| WO (1) | WO2008077481A2 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101740693B1 (ko) * | 2015-03-18 | 2017-05-30 | 전남대학교산학협력단 | 카테터 및 카테터 시스템 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3545980A (en) * | 1966-12-01 | 1970-12-08 | Mildred H Stanger | Combination straw and flavoring |
| DE3115763A1 (de) * | 1981-04-18 | 1982-11-04 | Edgar Dr.med. 6238 Hofheim Lenhard | Medizinische depotsonde zur lokalen protrahierten wirkstoffreisetzung |
| DE3441586A1 (de) * | 1984-11-14 | 1986-05-15 | Jörg-Günter Dr.med. 3100 Celle Wiedeck | Harnroehrenkatheter |
| FI83729C (fi) * | 1987-11-26 | 1991-08-26 | Biocon Oy | Kirurgisk implantat. |
| US5451215A (en) * | 1990-09-17 | 1995-09-19 | Wolter; Dietmar | Suction drain for the aspiration of discharges |
| SE502003C2 (sv) * | 1993-11-08 | 1995-07-10 | Matts Folkoe | Salivsug innefattande ett antal styva sektionselement |
| DE4341442C2 (de) * | 1993-12-04 | 1998-11-05 | Lohmann Therapie Syst Lts | Vorrichtung zur kontrollierten Freisetzung von Wirkstoffen sowie ihre Verwendung |
| DE19641775A1 (de) * | 1996-08-22 | 1998-02-26 | Merck Patent Gmbh | Verfahren zur Herstellung von wirkstoffhaltigen Knochenzementen |
| US6273875B1 (en) * | 1998-08-17 | 2001-08-14 | Edwards Lifesciences Corporation | Medical devices having improved antimicrobial/antithrombogenic properties |
| US6579533B1 (en) * | 1999-11-30 | 2003-06-17 | Bioasborbable Concepts, Ltd. | Bioabsorbable drug delivery system for local treatment and prevention of infections |
| GB0020610D0 (en) * | 2000-08-21 | 2000-10-11 | Dytech Corp Ltd | Uses of porous carriers |
| DE10114364A1 (de) * | 2001-03-22 | 2002-10-02 | Heraeus Kulzer Gmbh & Co Kg | Verfahren zur Herstellung von antibiotischen Kompositen |
-
2006
- 2006-12-20 DE DE102006060938A patent/DE102006060938A1/de not_active Withdrawn
-
2007
- 2007-12-11 JP JP2009541833A patent/JP5406036B2/ja not_active Expired - Fee Related
- 2007-12-11 EP EP07856568.6A patent/EP2101837B1/de not_active Not-in-force
- 2007-12-11 WO PCT/EP2007/010820 patent/WO2008077481A2/de not_active Ceased
- 2007-12-11 US US12/520,810 patent/US20100136080A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008077481A3 (de) | 2008-09-25 |
| JP2010512871A (ja) | 2010-04-30 |
| EP2101837A2 (de) | 2009-09-23 |
| DE102006060938A1 (de) | 2008-06-26 |
| EP2101837B1 (de) | 2013-05-15 |
| US20100136080A1 (en) | 2010-06-03 |
| JP5406036B2 (ja) | 2014-02-05 |
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