Prolonged anesthesia in joints and body spaces
First Claim
1. A method of treating localized pain, comprising administering a formulation into a body space selected from the group consisting of pleura, peritoneum, cranium, mediastinum, pericardium, bursae, epidural space, intrathecal space, and intraocular space, said formulation comprising (a) a local anesthetic incorporated in an effective amount of a biocompatible, biodegradable sustained release material, which prolongs the release of the local anesthetic from the formulation, and (b) a non-toxic augmenting agent in an amount effective to prolong the effect of the local anesthetic in-vivo, to treat pain arising from said body space.
1 Assignment
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Accused Products
Abstract
Sustained release local anesthetic formulations are administered intra articularly and/or into body spaces/cavities. The formulation is preferably a plurality of injectable microparticles including a local anesthetic and an effective amount of a biocompatible, biodegradable, sustained release material prolonging the release of the local anesthetic and optionally and a pharmaceutically acceptable, i.e., non-toxic, augmenting agent effective to prolong the duration of the local anesthesia for a time period longer than that obtainable without the augmenting agent.
327 Citations
31 Claims
- 1. A method of treating localized pain, comprising administering a formulation into a body space selected from the group consisting of pleura, peritoneum, cranium, mediastinum, pericardium, bursae, epidural space, intrathecal space, and intraocular space, said formulation comprising (a) a local anesthetic incorporated in an effective amount of a biocompatible, biodegradable sustained release material, which prolongs the release of the local anesthetic from the formulation, and (b) a non-toxic augmenting agent in an amount effective to prolong the effect of the local anesthetic in-vivo, to treat pain arising from said body space.
- 2. A method of treating localized pain, comprising administering a formulation into a body space selected from the group consisting of pleura, peritoneum, cranium, mediastinum, pericardium, bursae, epidural space, intrathecal space, and intraocular space, said formulation comprising (a) controlled release microparticles comprising a local anesthetic and an effective amount of a biocompatible, biodegradable sustained release polymer selected from polyanhydrides, copolymers of lactic acid and glycolic acid, poly(lactic) acid, poly(glycolic) acid, polyesters, polyorthoesters, proteins, polysaccharides and combinations thereof and (b) a non-toxic augmenting agent in an amount effective to prolong the effect of the local anesthetic in-vivo, said formulation when administered providing pain relief to said body space, said formulation when administered in-vivo providing local anesthesia or analgesia or numbness or pain relief for at least about 24 hours.
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14. A method of treating localized pain arising from a body space in a mammal, comprising injecting a formulation into a body space selected from the group consisting of pleura, peritoneum, cranium, mediastinum, pericardium, bursae, epidural space, intrathecal space, and intraocular space, said formulation comprising a pharmaceutically acceptable medium containing a plurality of microspheres comprising a local anesthetic and an effective amount of a biocompatible, biodegradable controlled release material capable of degrading at least fifty percent in less than two years following injection of the formulation in vivo, said controlled release material being selected from the group consisting of polyanhydrides, copolymers of lactic acid and glycolic acid, poly(lactic) acid, poly(glycolic) acid, polyesters, polyorthoesters, proteins, polysaccharides and combinations thereof, said formulation further comprising a non-toxic augmenting agent which is (i) incorporated into and/or onto said microspheres;
- or (ii) incorporated into said pharmaceutically acceptable medium, or (iii) incorporated into said microspheres and also incorporated into said pharmaceutically acceptable medium;
said microspheres being included in said formulation in an amount sufficient to obtain reversible local anesthesia or analgesia or numbness or pain relief or anti-inflammatory effect for at least about 24 hours when said formulation is injected into said body space. - View Dependent Claims (15)
- or (ii) incorporated into said pharmaceutically acceptable medium, or (iii) incorporated into said microspheres and also incorporated into said pharmaceutically acceptable medium;
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16. A method of prolonging the effect of a local anesthetic agent in body spaces, comprising injecting a formulation into a body space selected from the group consisting of pleura, peritoneum, cranium, mediastinum, pericardium, bursae, epidural space, intrathecal space, and intraocular space, said formulation comprising a pharmaceutically acceptable medium containing a plurality of microspheres comprising a local anesthetic and an effective amount of a biocompatible, biodegradable controlled release material,
said biocompatible, biodegradable controlled release material capable of degrading at least fifty percent in less than two years following injection of the formulation in vivo, said controlled release material being selected from the group consisting of polyanhydrides, copolymers of lactic acid and glycolic acid, poly(lactic) acid, poly(glycolic) acid, polyesters, polyorthoesters, proteins, polysaccharides and combinations thereof, said formulation further comprising a non-toxic augmenting agent which is (i) incorporated into and/or onto said microspheres; - or (ii) incorporated into said pharmaceutically acceptable medium, or (iii) incorporated into said microspheres and also incorporated into said pharmaceutically acceptable medium;
said microspheres being included in said formulation in an amount sufficient to obtain reversible local anesthesia or analgesia or numbness or pain relief or anti-inflammatory effect for at least about 24 hours when said formulation is injected into said body space. - View Dependent Claims (17, 18, 19, 20, 21, 22)
- or (ii) incorporated into said pharmaceutically acceptable medium, or (iii) incorporated into said microspheres and also incorporated into said pharmaceutically acceptable medium;
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23. A method of prolonging the effect of a local anesthetic agent in body spaces, comprising administering a formulation into a body space selected from the group consisting of pleura, peritoneum, cranium, mediastinum, pericardium, bursae, epidural space, intrathecal space, and intraocular space, said formulation comprising (a) controlled release microparticles comprising a local anesthetic and an effective amount of a biocompatible, biodegradable sustained release polymer selected from polyanhydrides, copolymers of lactic acid and glycolic acid, poly(lactic) acid, poly(glycolic) acid, polyesters, polyorthoesters, proteins, polysaccharides and combinations thereof;
- and (b) a non-toxic augmenting agent in an amount effective to prolong the effect of the local anesthetic in-vivo, for providing pain relief to a body space selected from the group consisting of pleura, peritoneum, cranium, mediastinum, pericardium, bursae, epidural space, intrathecal space, and intraocular space, said bursae selected from the group consisting of acromial, bicipitoradial, cubitoradial, deltoid, infrapatellar, and ishchiadica, and said formulation when administered in-vivo provides local anesthesia or analgesia or numbness or pain relief for at least about 24 hours.
- View Dependent Claims (24)
- 25. A method of treating localized pain, comprising administering a formulation into an intra-articular joint selected from the group consisting of knee, elbow, hip, sternoclavicular, temporomandibular, carpal, tarsal, wrist, ankle, and any other joint subject to pain, said formulation comprising (a) a local anesthetic incorporated in an effective amount of a biocompatible, biodegradable sustained release material, which prolongs the release of the local anesthetic from the formulation, and (b) a non-toxic augmenting agent in an amount effective to prolong the effect of the local anesthetic in-vivo, to treat pain arising from said intra-articular joint.
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27. A method of treating localized pain, comprising administering a formulation into a space selected from the group consisting of a pleural space, mediastinum, and pericardium, said formulation comprising (a) a local anesthetic incorporated in an effective amount of a biocompatible, biodegradable sustained release material, which prolongs the release of the local anesthetic from the formulation, and (b) a non-toxic augmenting agent in an amount effective to prolong the effect of the local anesthetic in-vivo, to treat pain arising from said space.
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28. A method of treating localized pain, comprising administering a formulation into a space selected from the group consisting of a pleural space, mediastinum, and pericardium, said formulation comprising (a) controlled release microparticles comprising a local anesthetic and an effective amount of a biocompatible, biodegradable sustained release polymer selected from polyanhydrides, copolymers of lactic acid and glycolic acid, poly(lactic) acid, poly(glycolic) acid, polyesters, polyorthoesters, proteins, polysaccharides and combinations thereof;
- and (b) a non-toxic augmenting agent in an amount effective to prolong the effect of the local anesthetic in-vivo, said formulation when administered providing pain relief to said space, said formulation when administered in-vivo providing local anesthesia or analgesia or numbness or pain relief for at least about 24 hours.
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29. A method of treating localized pain arising from a space in a mammal, comprising injecting a formulation into a space selected from the group consisting of a pleural space, mediastinum, and pericardium, said formulation comprising a pharmaceutically acceptable medium containing a plurality of microspheres comprising a local anesthetic and an effective amount of a biocompatible, biodegradable controlled release material capable of degrading at least fifty percent in less than two years following injection of the formulation in vivo, said controlled release material being selected from the group consisting of polyanhydrides, copolymers of lactic acid and glycolic acid, poly(lactic) acid, poly(glycolic) acid, polyesters, polyorthoesters, proteins, polysaccharides and combinations thereof, said formulation further comprising a non-toxic augmenting agent which is (i) incorporated into and/or onto said microspheres;
- or (ii) incorporated into said pharmaceutically acceptable medium, or (iii) incorporated into said microspheres and also incorporated into said pharmaceutically acceptable medium;
said microspheres being included in said formulation in an amount sufficient to obtain reversible local anesthesia or analgesia or numbness or pain relief or anti-inflammatory effect for at least about 24 hours when said formulation is injected into said space.
- or (ii) incorporated into said pharmaceutically acceptable medium, or (iii) incorporated into said microspheres and also incorporated into said pharmaceutically acceptable medium;
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30. A method of prolonging the effect of a local anesthetic agent in spaces, comprising injecting a formulation into a space selected from the group consisting of a pleural space, mediastinum, and pericardium, said formulation comprising a pharmaceutically acceptable medium containing a plurality of micro spheres comprising a local anesthetic and an effective amount of a biocompatible, biodegradable controlled release material, said biocompatible, biodegradable controlled release material capable of degrading at least fifty percent in less than two years following injection of the formulation in vivo, said controlled release material being selected from the group consisting of polyanhydrides, copolymers of lactic acid and glycolic acid, poly(lactic) acid, poly(glycolic) acid, polyesters, polyorthoesters, proteins, polysaccharides and combinations thereof,
said formulation further comprising a non-toxic augmenting agent which is (i) incorporated into and/or onto said microspheres; - or (ii) incorporated into said pharmaceutically acceptable medium, or (iii) incorporated into said microspheres and also incorporated into said pharmaceutically acceptable medium;
said microspheres being included in said formulation in an amount sufficient to obtain reversible local anesthesia or analgesia or numbness or pain relief or anti-inflammatory effect for at least about 24 hours when said formulation is injected into said space.
- or (ii) incorporated into said pharmaceutically acceptable medium, or (iii) incorporated into said microspheres and also incorporated into said pharmaceutically acceptable medium;
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31. A method of prolonging the effect of a local anesthetic agent in spaces, comprising administering a formulation into a space selected from the group consisting of a pleural space, mediastinum, and pericardium, said formulation comprising (a) controlled release microparticles comprising a local anesthetic and an effective amount of a biocompatible, biodegradable sustained release polymer selected from polyanhydrides, copolymers of lactic acid and glycolic acid, poly(lactic) acid, poly(glycolic) acid, polyesters, polyorthoesters, proteins, polysaccharides and combinations thereof;
- and (b) a non-toxic augmenting agent in an amount effective to prolong the effect of the local anesthetic in-vivo, for providing pain relief to a space selected from the group consisting of a pleural space, mediastinum, and pericardium, and said formulation when administered in-vivo provides local anesthesia or analgesia or numbness or pain relief for at least about 24 hours.
Specification