Randy R. Stephens
36Patents
26h-index
43Co-inventors
85Inventor score
Filing activity: Apr 21, 1983 → Aug 28, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6620111B2 | Surgical biopsy device having automatic rotation of the probe for taking multiple samples | Human Necessities | 1,276 | Expired |
| US5197955A | Universal seal for trocar assembly | Human Necessities | 380 | Expired |
| US5314417A | Safety trocar | Human Necessities | 330 | Expired |
| US5256149A | Trocar having transparent cannula and method of using | Human Necessities | 305 | Expired |
| US5350364A | Universal seal for trocar assembly | Human Necessities | 274 | Expired |
| US7648466B2 | Manually rotatable piercer | Human Necessities | 230 | Active |
| US7442171B2 | Remote thumbwheel for a surgical biopsy device | Human Necessities | 193 | Active |
| US6730044B2 | Firing mechanism for use in a surgical biopsy device | Human Necessities | 181 | Expired |
| US6656133B2 | Transmission assembly for a surgical biopsy device | Human Necessities | 149 | Expired |
| US5531758A | Sliding reducer seal for surgical trocar | Human Necessities | 142 | Expired |
| US5545142A | Seal members for surgical trocars | Human Necessities | 137 | Expired |
| US6663592B2 | Catheter introducer assembly having safety shielded needle | Emerging Cross-Sectional Technologies | 136 | Expired |
| US7153274B2 | Remote thumbwheel for a surgical biopsy device | Human Necessities | 135 | Expired |
| US5209736A | Trocar method and apparatus | Human Necessities | 109 | Expired |
| US5609604A | Trocar with improved blade attachment | Human Necessities | 99 | Expired |
| US7303548B2 | Catheter introducer assembly having safety shielded needle | Emerging Cross-Sectional Technologies | 86 | Expired |
| US5709671A | Trocar having an improved tip configuration | Human Necessities | 85 | Expired |
| US7959613B2 | Catheter introducer assembly having safety shielded needle | Emerging Cross-Sectional Technologies | 83 | Active |
| US5776112A | Trocar having an improved tip configuration | Human Necessities | 81 | Expired |
| US7108660B2 | Surgical biopsy device having automatic rotation of the probe for taking multiple samples | Human Necessities | 75 | Expired |
| US5522833A | Retractable obturator for a trocar | Human Necessities | 73 | Expired |
| US5690663A | Safety trocar | Human Necessities | 73 | Expired |
| US7837632B2 | Biopsy device tissue port adjustment | Human Necessities | 65 | Active |
| USD338270S | Adjustable trocar stabilizing collar | General | 51 | Expired |
| US5161725A | Rotating head skin stapler | Human Necessities | 50 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.