Wound retractor with split hoops

• US 9,649,102 B2
• Filed: 07/08/2015
• Issued: 05/16/2017
• Est. Priority Date: 10/14/2005
• Status: Active Grant

• Current Assignee: Applied Medical Resources Corporation (Applied Medical Corporation)
• Original Assignee: Applied Medical Resources Corporation (Applied Medical Corporation)
• Inventors: Albrecht, Jeremy J., Hart, Charles C., Brustad, John R., Gadberry, Donald L., Johnson, Gary M., Ko, Jennifer T.
• Primary Examiner(s): BATES, DAVID W
• Application Number:
  US14/794,052
• Publication Number:
  US 20150305733A1
• Time in Patent Office: 678 Days
• CPC Class Codes: A61B 17/02 for holding wounds open; Tractors specula A61B1/32 ; drainage appliances for wounds A61M27/00
• CPC Class Codes: A61B 17/0218 for minimally invasive surgery A61B17/0281, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 17/0293 with ring member to support retractor elements
• CPC Class Codes: A61B 17/3423 Access ports, e.g. toroid shape introducers for instruments or hands access sites for liquids A61M39/0247
• CPC Class Codes: A61B 17/3431 being collapsible, e.g. made of thin flexible material A61B17/3423 takes precedence
• CPC Class Codes: A61B 17/3439 with means for changing the inner diameter of the cannula, e.g. expandable A61B17/3423, A61B17/3431 take precedence; catheters A61M25/0662
• CPC Class Codes: A61B 17/3462 with means for changing the diameter or the orientation of the entrance port of the cannula, e.g. for use with different-sized instruments, reduction ports, adapter seals expandable cannulas A61B17/3417
• CPC Class Codes: A61B 17/3496 Protecting sleeves or inner probes; Retractable tips for protecting body piercing guide needles A61M25/0612
• CPC Class Codes: A61B 17/3498 Valves therefor, e.g. flapper valves, slide valves haemostasis valves A61M39/06; check valves A61M39/24
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 2017/00526 Methods of manufacturing
• CPC Class Codes: A61B 2017/0225 flexible, e.g. fabrics, meshes, or membranes
• CPC Class Codes: A61B 2017/0287 with elastic retracting members connectable to a frame, e.g. hooked elastic wires
• CPC Class Codes: A61B 2017/3419 Sealing means between cannula and body
• CPC Class Codes: A61B 2017/347 Locking means, e.g. for locking instrument in cannula
• CPC Class Codes: A61B 2050/005 with a lid or cover
• CPC Class Codes: A61B 2050/0051 closable by rotation
• CPC Class Codes: A61B 90/40 Apparatus fixed or close to patients specially adapted for providing an aseptic surgical environment

Abstract

An incrementally adjustable wound retractor, which provides access to a body cavity, includes a flexible retraction sheath, an inner ring having a diameter greater than the desired diameter of the wound incision attached to the distal end of the retraction sheath, and at least two rows of a plurality of loops disposed around the proximal end of the retraction sheath, each row of loops sized and configured to receive a noncompliant split hoop. The two split hoops may be rolled over each other and around the annular axis to retract the sheath with sufficient force to stretch the incision to the desired diameter.

Claims

1. An adjustable wound retractor comprising:

a flexible retraction sheath having a distal end, a proximal end, and an outer surface;

a flexible inner ring insertable into a body cavity, the ring attached to the distal end of the retraction sheath;

a first split-hoop comprising a first end and a second end, wherein the first split-hoop is disposed within a first row of a plurality of loops

positioned around the outer surface of the retraction sheath near the proximal end of the sheath, the first row of loops sized and configured to receive the first split-hoop; and

a second split-hoop comprising a first end and a second end, wherein the second split-hoop is disposed within a second row of a plurality of loops positioned around the outer surface of the retraction sheath near the proximal end of the sheath, the second row of loops positioned distal to the first row and sized and configured to receive the second split-hoop.

2. The access device of claim 1, wherein a distal portion of the retraction sheath has the configuration of a frustrum of a cone.

3. The access device of claim 1, wherein a proximal portion of the retraction sheath has the configuration of a cylinder.

4. The access device of claim 1, wherein the retraction sheath comprises an elastomeric material.

5. The access device of claim 1, wherein the retraction sheath comprises neoprene.

6. The access device of claim 1, wherein the hoop comprises at least one of:

metal, plastic, and a composite.

7. The access device of claim 1, wherein the hoop is tubular.

8. The access device of claim 1, wherein the inner ring comprises at least one of an elastomer, a soft plastic, and rubber.