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Class 623: PROSTHESIS (I.E., ARTIFICIAL BODY MEMBERS), PARTS THEREOF, OR AIDS AND ACCESSORIES THEREFOR / U.S. Patent ... (7764 words) |
 | A filter placed in a vessel or organ is classified in Class 623 if they remain longer than the operation, and in Class 606 if they are removed before completion of the operation. |
| Dialators, are to be placed in Class 606 only if the device is used for holding open the vessel or organ while it is being operated on (i.e., for the duration of the operation), and then removed. |
| Class 623, for example, provides for sphincter type apparatus which is completely or partially substituted for an existing sphincter type muscle while Class 128 provides for sphincter type apparatus which is used in addition to an existing sphincter type muscle or in a location where no such muscle normally exists. |
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