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Claims for Patent: 5,670,524

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Claims for Patent: 5,670,524

Title: Methods and compositions for the treatment of pain utilizing ropivacaine
Abstract:Use of a pharmaceutically acceptable salt of ropivacaine for the manufacture of a pharmaceutical preparation with sensoric block and minimal motor blockade.
Inventor(s): Eek; Arne Torsten (Trosa, SE)
Assignee: Astra AB (SE)
Application Number:08/256,319
Patent Claims: 1. A method for treating a human experiencing pain, said method comprising: administering to said human a composition comprising a pharmaceutically acceptable salt of ropivacaine, wherein said ropivacaine is present in said composition at a concentration of less than 0.25% by weight.

2. The method of claim 1, wherein said composition is administered at a site permitting direct interaction between said ropivacaine and nerves in the spinal column of said human.

3. The method of claim 1, wherein said composition is administered epidurally.

4. The method of any one of claims 1-3, wherein said pharmaceutically acceptable salt of ropivacaine is ropivacaine hydrochloride.

5. The method of any one of claims 1-3, wherein said composition is administered by continuous infusion.

6. The method of claim 5, wherein said continuous infusion is at a flow rate of about 10 ml per hour.

7. The method of any one of claims 1-3, wherein said composition is administered for post-surgical pain.

8. The method of any one of claims 1-3, wherein said composition is administered for labor pain.

9. A pharmaceutical composition for use in acute pain management with minimal motor blockade, comprising a pharmaceutically acceptable salt of ropivacaine at a concentration lower than 0.25% by weight.

10. The pharmaceutical composition of claim 9, wherein said pharmaceutically acceptable salt of ropivacaine is ropivacaine hydrochloride.
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