# US 10,307,151 B2 · Retractor for surgical operation

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- Number: US 10,307,151 B2
- Document ID: US10307151B2
- Status: Granted
- Kind: B2
- Application number: 15/751,927
- Filed: 2016-03-24
- Published: 2018-10-18
- Granted: 2019-06-04
- Earliest claimed: 2015-08-19
- Applicants: Wecan Medicare Co., Ltd.
- Inventors: Chang Won Chung
- Web page: https://patentgrep.com/patent/US10307151B2

## CPC

- A61B 17/0293: {with ring member to support retractor elements}
- A61B 17/02: for holding wounds open, e.g. retractors; Tractors
- A61B 90/50: Supports for surgical instruments, e.g. articulated arms
- A61B 17/3423: {Access ports, e.g. toroid shape introducers for instruments or hands (access sites for liquids A61M39/0247)}
- A61B 2090/571: {for clamping a support arm to a bed or other supports}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

The present invention relates to a surgical traction device and, more specifically, to a surgical traction device, in which a surgical incision site is expanded to allow a surgical tool to be easily inserted in a state, in which the epidermis is incised for surgical operation, and an expansion part having elasticity is formed into a cylindrical shape and held on a fixing part at the upper portion thereof so as to maintain the incision site in an expanded state. According to the present invention, the expansion part made of a material with elasticity can be inserted in the incision site so as to form a space for surgical operation and the expansion part can be easily attached to or separated from the fixing part so that it is easy to change the position of the traction device or remove the traction device during surgery.

## Claims

### Claim 1

A surgical traction device for extending an incision site formed in the epidermis (200) for surgical operation, comprising:
a fixing part (110) configured to be seated on the upper surface of the epidermis; and
an expansion part (120) made of a flexible material and being configured to passing through the fixing part (110) and configured to be inserted into the incision site so as to open the incision site, wherein the fixing part (110) includes
a ring-shaped body (111) having a through hole (112) formed in the center of a disc,
at least one traction blade seat part (113) formed as a recess on a surface of the ring-shaped body, and having a fixing protrusion (114) protruding from the traction blade seat part (113), and
wherein the expansion part (120) includes
an upper ring (121), in the center of which an epidermal opening (122) is formed,
at least one traction blade (123) integrally formed with the upper ring and extending outwardly from the outer rim of the upper ring (121), and being configured to engage said at least one traction blade seat part and the fixing protrusion,
a side wall (124) integrally formed with the upper ring and extending in the downward direction from the bottom surface of the inner rim of the upper ring (121) and being configured to be disposed inside the through hole (112) of the fixing part (110), and
a lower ring (125) integrally formed at the lower portion of the side wall (124) and having a larger diameter than said side wall and being configured to engage a bottom surface of the epidermis such that the expansion part is held in the surgical site.

### Claim 2 (depends on 1)

The surgical traction device according to claim 1, wherein one or two or more fixing grooves (123a) are formed through the traction blade (123) and the fixing protrusions (114) are inserted into the fixing grooves (123a).

### Claim 3 (depends on 1)

The surgical traction device according to claim 1, wherein the expansion part (120) is made of a silicon material.