Skin tensioning device

• US 6,120,525 A
• Filed: 07/14/1999
• Issued: 09/19/2000
• Est. Priority Date: 07/14/1999
• Status: Expired due to Fees

• Current Assignee: Woundtek, Inc.
• Original Assignee: Mitchell S. Westcott
• Inventors: Westcott, Mitchell S.
• Primary Examiner(s): Buiz, Michael
• Assistant Examiner(s): Trinh, Hoa B.
• Application Number:
  US09/353,251
• Time in Patent Office: 433 Days
• Field of Search: 606/216, 606/232, 606/220, 606/219
• US Class Current: 606/216
• CPC Class Codes: A61B 17/0466 Suture bridges
• CPC Class Codes: A61B 2017/0496 for tensioning sutures

Abstract

The present invention provides a skin tensioning device. The skin tensioning device includes an anchor member having a body portion and a pair of first suture guide slots. The anchor member is positioned at one side of a wound. A winding assembly is coupled by sutures to the anchor member. The winding assembly comprises a winder body having a first end and an opposing second end. Similar to the anchor member, the winder body includes a pair of second suture guide slots. The winder body is positioned at an opposite side of the wound. The suture is looped through the first and second suture guide slots of the anchor member and winder body, respectively, so that the suture also extends through the skin beneath each member and across the wound. The first end of the winder body includes a retaining groove which is formed in sidewalls and a bottom surface thereof. The second end of the winder body includes a beveled shoulder formed therein. The winding assembly also includes a reel having a first end and an opposing second end. A ratchet is provided at the second end and an annular retaining flange, which is received within the retaining groove of the winder body, is formed at the first end. Intermediate the first and second ends is a rail which is disposed parallel to an axis of rotation of the reel. The rail has a catch lip portion which captures the suture as the reel is cranked thereby winding the suture around the reel and drawing the anchor member and winder body toward one another and eventually brining margins of the wound into apposition for conventional suturing.

Claims

1. A skin tensioning device including:

an anchor member having a first end and a second end and a pair of first suture guide slots formed therein for receiving a suture;

a winder body having a first end and a second end and a pair of second suture guide slots, the winder body including a retaining groove formed at the first end and a beveled shoulder at the second end, the second suture guide slots for receiving the suture;

a reel having an annular retaining flange at a first end, a ratchet at a second end, and a rail intermediate the first and second ends of the real;

the annular retaining flange being received in the retaining groove of the winder body to securely couple the two together, the ratchet engaging the beveled shoulder to permit a ratchet action when the reel is rotated within the winder body, the reel having at least one drive opening formed in one of the first and second ends; and

a drive crank for rotating the reel within the winder body.

2. The skin tensioning device of claim 1, further including:

a stabilizer having a body with a pair of prongs extending outwardly from one end, the pair of prongs being received within stabilizing slots formed in an outer surface of the winder body intermediate the first and second ends, the body extending above and across the reel when the prongs are located within the stabilizing slots, wherein the stabilizer securely holds the winder body during cranking of the reel.

3. The skin tensioning device of claim 1, wherein the anchor member and winder body comprise semicircular shells.

4. The skin tensioning device of claim 1, wherein the first suture guide slots comprise a pair of slots inwardly extending from the first and second sides of the anchor member, the second suture guide slots comprising a pair of slots inwardly extending from the first and second sides of the winder body.

5. The skin tensioning device of claim 1, wherein the rail of the reel includes a catch lip for catching the suture as the reel is rotated within the winder body so that the suture is wound around the reel as the reel is rotated within the winder body.

6. The skin tensioning device of claim 1, wherein the anchor member is positioned at one side of a wound resting on a surface of the skin and the winder body is positioned at an opposite side of the wound resting on the skin, one end of a loop of the suture extending through the first suture guide slots of the anchor member, the other end of the loop extending through the second suture guide slots of the winder body, whereby the suture loop extends across the wound.

7. The skin tensioning device of claim 1, wherein the crank includes a drive head being received within a drive opening formed in one of first and second ends of the reel.

8. The skin tensioning device of claim 7, wherein the drive head and drive opening are hexagonal in shape.

9. The skin tensioning device of claim 5, wherein the rail and catch lip are integrally formed and generally comprise an L shaped member, a top potion being the catch lip.

10. The skin tensioning device of claim 1, wherein the ratchet includes ratchet gears which are complementary to the beveled shoulder formed in the winder body, the ratchet gears engaging the beveled shoulder during rotation of the reel.

11. The skin tensioning device of claim 1, wherein the pair of first suture guide slots are formed in a bottom surface of the anchor member and are linearly aligned with one another and the pair of second suture guide slots are formed in a bottom surface of the winder body and are linearly aligned with one another.

12. The skin tensioning device of claim 4, wherein the first suture guide slot at the second end of winder body is parallel to the beveled shoulder which extends inwardly from the second end and is generally located on a bottom surface of the winder body.

13. The skin tensioning device of claim 1, further comprising:

a stabilizer including a body having a first end and a second end, the first side including a prong extending outwardly from the first end, the prong being received within a stabilizing slot formed in an outer surface of the winder body intermediate the first and second ends of the winder body, the second end of the stabilizer including a hinge which hingedly attaches the second end of the stabilizer to the winder body and permits the stabilizer to move between a hinged position and an engaged position, wherein in the hinged position, the reel is freely removable from the winder body and in the engaged position, the body extends above and across the reel.

14. A skin tensioning device including:

an anchor member having a first end and a second end and a pair of first suture guide slots formed therein for receiving a suture;

a winder body having a first end and a second end and a pair of second suture guide slots, the winder body including a retaining groove formed at the first end and a beveled shoulder at the second end, the second suture guide slots for receiving the suture;

a reel having an annular retaining flange at a first end, a ratchet at a second end, the annular retaining flange being received in the retaining groove of the winder body to securely couple the two together, the ratchet engaging the beveled shoulder to permit a ratchet action when the reel is rotated within the winder body, the reel having at least one drive opening formed in one of the first and second ends,

means on the reel for catching and winding the suture around the body of the reel as the reel is rotated; and

a drive crank for rotating the reel within the winder body.

15. The skin tensioning device of claim 14, wherein the means for catching and winding the suture around the reel comprise at least one hook disposed on the reel and extending therefrom so that the suture is caught by the hook as the reel is rotated and the continued rotation of the reel causes the suture to be continuously wound around the reel.

16. The skin tensioning device of claim 14, wherein the means for catching and winding the suture around the reel comprise a notch formed within the body of the reel, the notch extending a portion of the length of the reel so that the suture is caught in the notch as the reel is rotated and the continued rotation of the reel causes the suture to be continuously wound around the reel.

17. A method of skin tensioning, stretching, or closing a wound, comprising:

preparing a wound on the skin that provides opposed skin margins;

positioning an anchor member at one side of the wound resting on the surface of the skin;

positioning a winder body at the opposite side of the wound resting on the surface of the skin;

suturing through each of the anchor member and the winder body and then through the skin beneath the anchor member and the winder body using one continuous loop of suture material;

inserting a reel within the winder body, the reel having a rail intermediate first and second ends of the real, the rail extending outwardly from an outer surface of the reel; and

rotating the reel within the winder body so that the rail of the reel catches the suture and further rotation of the reel causes the suture to be wound around the reel intermediate the first and second ends, the winding of the suture causing the winder body and anchor member to be drawn toward each other to eventually bring the margins of the wound into apposition for conventional suturing.

18. The method of claim 17, wherein the anchor member has first and second ends and a pair of first suture guide slots, the pair of first suture guide slots extending inwardly from the first and second ends, the winder body having first and second ends and a pair of second suture guide slots, the pair of second suture guide slots extending inwardly from the first and second ends of the winder body, the suture looping through the first suture guide slots at the one side of the wound and through the second suture guide slots at the opposite side of the wound.

19. The method of claim 17, wherein the insertion of the reel within the winder body, comprises:

inserting an annular retaining flange formed at the first end of the reel into a retaining groove formed in a first end of the winder body; and

engaging a ratchet portion of the reel at a second end thereof with a beveled shoulder formed in the winder body.

20. The method of claim 19, wherein the rotation of the reel comprises:

inserting a drive crank into a drive opening formed in the reel;

rotating the reel in a first direction so that ratchet gears engage the beveled shoulder and the reel rotates in a ratchet like manner and the annular retaining flange rotates within the retaining groove of the winder body.

21. The method of claim 20, wherein the rail includes a catch lip which catches the suture loop extending within the winder body so that rotation of the reel causes the catch lip to pick up and wind the suture loop around the reel.

22. The method of claim 20, further comprising:

stabilizing the winder body during the rotation of the reel by securely coupling a stabilizer with the winder body, the stabilizer including a pair of prongs outwardly extending from a body, the pair of prongs being received within complementary stabilizing slots formed within an outer surface of the winder body, the stabilizer body extending above and across the reel during the rotation thereof.