Methods for controlled depth injections into interior body cavities
US6835193B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2001 |
| Grant date | Dec 28, 2004 |
| Priority date | — |
| Expiry date | Dec 6, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/75
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A flexible tissue injection catheter is used to accomplish injections at a precisely controlled depth of precisely controlled volumes of a therapeutic or diagnostic agent into an interior body cavity, such as the epicardium or myocardium of the heart. In one embodiment, the invention method includes repeated injections at spaced intervals along the myocardium or epicardium of sterile fluid containing autologous bone marrow aspirate to promote angiogenesis. For myocardial injection, depth penetration is controlled by using a catheter that allows the operator to control depth penetration by means of an adjustable needle stop attached to the catheter handle. In another embodiment depth penetration during epicardial injections is controlled by use of an injection catheter having an operator-controlled adjustable needle stop that produces a sensible signal, such as a visible or audible signal, marking each increment of needle tip exposed by operation of the adjustable needle stop.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.