Bioabsorbable surgical implants for endoscopic soft tissue suspension procedure

• US 6,015,410 A
• Filed: 12/23/1997
• Issued: 01/18/2000
• Est. Priority Date: 12/23/1997
• Status: Expired due to Term

• Current Assignee: Bionx Implants, Oy (Jefferies Financial Group, Inc.)
• Original Assignee: Bionx Implants, Oy (Jefferies Financial Group, Inc.)
• Inventors: Nigro, Dennis M., Tormala, Pertti, Helevirta, Pertti, Tamminmaki, Markku
• Primary Examiner(s): Buiz, Michael
• Assistant Examiner(s): Trinh, Vikki
• Application Number:
  US08/997,458
• Time in Patent Office: 756 Days
• Field of Search: 606/232, 606/72, 606/73, 606/75, 606/151, 606/65-67, 411/34-38, 411/59-61, 411/43, 411/511, 52/512
• US Class Current: 606/232
• CPC Class Codes: A61B 17/0401 Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors A61B17/0642 takes precedence; fixation devices for tendons or ligaments A61F2/0811
• CPC Class Codes: A61B 17/8605 Heads, i.e. proximal ends projecting from bone
• CPC Class Codes: A61B 2017/00004 (bio)absorbable, (bio)resorbable or resorptive
• CPC Class Codes: A61B 2017/044 with a threaded shaft, e.g. screws
• CPC Class Codes: A61B 2017/0458 Longitudinal through hole, e.g. suture blocked by a distal suture knot
• CPC Class Codes: A61B 2017/0496 for tensioning sutures
• CPC Class Codes: Y10S 606/908 Bioabsorbable material

Abstract

A bioabsorbable surgical implant for use in supporting soft tissue in a superior position in the body is described. The surgical implant includes a shaft that connects the implant to a bone or hard tissue and a head secured to the shaft. The head of the implant has a concave lower surface so that a suture (or sutures) can easily be wound around the shaft below the head and locked to this position by tightening the head against bone or hard tissue and by pushing or turning the shaft into the bone or hard tissue. The connected shaft and head are formed from a resorbable polymer, copolymer, polymer alloy or composite, which maintains a specified strength for a period of time at least equal to a healing period for the patient. Thereafter, the surgical implant is substantially resorbed by the body over a period of time needed for healing. The surgical implant is particularly adapted for use in endoscopic face and/or brow lift surgery and other endoscopic cosmetic, plastic and reconstructive surgical procedures, where sutures are applied for tissue lifting.

Claims

1. A bioabsorbable surgical implant for use in combination with sutures in supporting soft tissue in a position in a body, the surgical implant comprising:

a shaft having a distal end and a proximal end; and

a head having a convex outer surface and a continuous concave lower surface extending from said proximal end of said shaft to an edge of said convex outer surface, said proximal end of said shaft being integrally to said continuous concave lower surface of said head.

2. A bioabsorbable surgical implant of claim 1, wherein the shaft contains one or more protrusions.

3. The bioabsorbable surgical implant of claim 1, wherein the protrusions are threads, barbs or ridges.

4. A bioabsorbable surgical implant of claim 2, wherein the outer surface of the head contains a gripping element.

5. A bioabsorbable surgical implant of claim 4, wherein the gripping element is a cruciform, triangular, quadrangular, hexagonal or circular notch.

6. A surgical procedure for supporting soft tissue in an improved position in a body using a bioabsorbable surgical implant of claim 1, an endoscope, an inserting device, and one or more sutures, the procedure comprising;

making a surgical opening proximate to soft tissue to be moved, skin and bone;

inserting the endoscope into the surgical opening for viewing surgical activity;

separating the soft tissue and skin from the bone;

drilling a hole in the bone proximate the soft tissue to be moved;

inserting the bioabsorbale surgical implant of claim 1 partially into the hole;

looping a suture having two free ends through the soft tissue and lifting the soft tissue by tightening the free ends of the suture;

winding the free ends of the suture around the proximal part of the shaft of the implant, just below its head;

inserting the implant into the drill hole with an inserting device, so that the head of the implant tightens against the bone surface and locks the wound suture below the implant head and the suture retains the soft tissue under tension in the desired improved position; and

closing the surgical opening;

7. The procedure of claim 6, wherein the soft tissue and skin being moved is a portion of a brow.