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| Wound closure device |
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| Surgical drapes and methods of making same |
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| Vacuum extractor |
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| Gynecological tenaculum |
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| Laparoscopic instrument |
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Tensioning, twisting and cutting device for sutures
| Details |
Inventors: Santos, Manuel V.;
Assignee:
Primary Examiner: Petrakes; John
Assistant Examiner:
Attorney, Agent or Firm: Carella, Bain, Gilfillan & Rhodes
This invention relates to surgical instruments used, for example, in approximation of the sternum after median sternotomy. The device according to this invention is utilized to tighten applied sternal sutures, such as wires, by first winding up the sutures on a spool, then twisting the sutures for fixation and to provide an appropriate final tension. A cutting mechanism is included for severing the sutures so as to leave a short twisted segment, resulting in a joint secure against slippage. Waste sutures are stripped from the spool against a stripping plate by axial translation of the spool. A crank and sleeve may be included to facilitate twisting the sutures for fixation and final tensioning. An optional ratchet or similar mechanism may be used to prevent unwinding of the sutures from the spool during operation. |
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DETAILED DESCRIPTION The primary object of the present invention is to provide a new device for joining, tensioning, fixing and severing sutures in, for example, approximation of the sternum after median sternotomy, using stainless steel sutures.
The device according to this invention includes a shaft having stripping and retaining plates, a channel and a lumen.
The sutures are fed through the lumen to a slotted spool which extends through holes in the stripping and retaining plates and which serves to wind up the sutures so as to provide an initial degree of tension.
Means are provided for rotating the spool to wind up the sutures, and an optional ratchet or similar mechanism may be utilized to prevent unwinding of the sutures from the spool during use.
The device itself is rotated to twist the sutures together, thereby fixing the sutures and imparting an appropriate final degree of tension; this operation is facilitated by provision of a crank, for rotating the device, and a sleeve, for holding the device during rotation.
A cutting mechanism is included to sever the twisted ends of the sutures, thereby leaving a short twisted segment for fixation.
The spool is mounted in such a way that the stripping and retaining plates serve to retain the sutures laterally on the spool during operation.
The spool can be axially translated so that the stripping plate strips waste sutures from the spool.
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