Endoscopic surgical kit for release of trigger finger
US5480408A · kind A · utility
Inventor
Key dates
| Filing date | Oct 12, 1993 |
| Grant date | Jan 2, 1996 |
| Priority date | — |
| Expiry date | Oct 12, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/320036
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A surgical kit for performing trigger finger release surgery. A flexor tendon (T) passes through the palm (P) of a person's hand (H) to a finger (F) or thumb (B). Constriction of a protective sheath (E) around the tendon causes the trigger finger condition. For a person suffering from trigger finger, a path (1) of the impaired tendon is first identified. A puncture site is then located for insertion of one end of a hollow, curved cannula (1) into the palm. The cannula is pushed through the palm with a first puncture hole (U) being made where the instrument enters into the palm, and a second puncture hole (U') where the cannula exits from the palm. The cannula is routed through the palm such that the path (8) of the cannula passes through the sheath. The cannula is left in place and an arthroscope (9) and a surgical knife (11) are inserted into respective ends of the instrument. The surgeon views the surgical site through a monitor (10) to which the arthroscope is attached. The knife has a cutting blade brought to bear by the surgeon on the sheath. The cannula has a longitudinally extending slot (2) through which the surgeon both views the site and moves the knife against the sheath…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.