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Surgical retractor

A technique of surgery and ontology, applied in surgery, medical science, surgical swabs, etc.

Active Publication Date: 2015-05-27
KAWAMOTO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Although the suppression devices described in the above-mentioned Patent Documents 1 and 2 are configured to use a relatively soft rubber sheet and an air-filled tube to suppress the internal organs, the frame and the handle that support it are hard.

Method used

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  • Surgical retractor
  • Surgical retractor
  • Surgical retractor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0054] figure 1 It is a perspective view showing the surgical exclusion body 90 according to Embodiment 1 of the present invention.

[0055] The exclusion body 90 is used in endoscopic surgery, and the exclusion body 90 includes an exclusion body body 91 and a fusion portion 92 fused to the exclusion body body 91 .

[0056] The exclusion body body 91 is made of cellulose sponge, and the extrusion body body 91 is a rod-shaped body (8mm×8mm× 200mm) (for convenience, the length direction is drawn shorter in the drawings). And let one direction orthogonal to the said Z direction be X direction, and let the direction orthogonal to Z direction and X direction be Y direction.

[0057] The expulsion body 91 is molded by compressing (arrow A) at an average compression rate of 10% from the side surfaces 91b and 91d of the YZ plane among the side surfaces 91a, 91b, 91c and 91d and drying. Therefore, the expansion stress remains in the X direction. In addition, the above-mentioned si...

Embodiment approach 2

[0105] Figure 7 (c) is a perspective view showing the surgical expulsion body 80 according to Embodiment 2 of the present invention.

[0106] In the exclusion body 90 of Embodiment 1, it is shown that the fusion portion 92 is located at the center position of the width (Y direction) of the side surfaces 91b, 91d (pressure application surface) of the exclusion body body 91 , while in Embodiment 2 In the excluder body 80 , the fusion portion 82 is arranged near the side edge of the excluder body 91 .

[0107] In the expulsion body 90 of Embodiment 1 described above, by setting the side to which water is applied as any one of the side surfaces 91a and 91c during use, the direction of sinking into the shape of the bottom of the ship is controlled, and when the side is provided with fusion When moisture is applied to the side surfaces 91b, 91d of the upper part and the front end of the rod-shaped expulsion body 90, it is not predetermined which side of the Y direction the directi...

Embodiment approach 3

[0119] Figure 9 (a) is a perspective view showing the surgical expulsion body 70 according to Embodiment 3 of the present invention, Figure 9 (b) is a plan view showing a state in which the expulsion body 70 is expanded.

[0120] The exclusion body 70 of Embodiment 3 is composed only of the exclusion body body 71 made of cellulose sponge, and does not have a fusion portion.

[0121] In the pre-expansion state (compression molding state) of the expulsion body 70, the expulsion body 70 is a rod-shaped body with a quadrilateral cross section ( Figure 9 in (a)). Then, among the side surfaces of the exclusion body body 71 of the exclusion body 70 , the side faces (pressure application surfaces) facing the X direction were compressed and dried at an average compression rate of 10% (arrow F). Therefore, the expansion stress remains in the X direction.

[0122] When water (such as physiological saline) is applied to the expulsion body 70, it will expand in the X direction. In ...

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PUM

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Abstract

An excluder (90) inserted into a human body for surgery. The excluder body (91) of the excluder (90) is formed by compressing and shaping a water-absorbing dilatant material so that expansion stress in the direction opposite the direction of the compression remains therein and so that the value of the residual expansion stress varies from portion to portion. Weld sections (92) consisting of a thermoplastic resin are provided to the surfaces (side surfaces (91b, 91d)) facing the direction in which the residual expansion stress is acting. When supplied with water, the excluder body (91) swells large at the center portion (C) thereof at which the expansion stress is high and the excluder body (91) swells small at both the end portions (E) thereof at which the expansion stress is low. The weld sections (92) do not extend, and this controls the shape of the excluder (90) so that, after swelling, the excluder has a curved shape.

Description

technical field [0001] The present invention relates to a surgical expulsion body used when expelling organs other than target organs (organs to be operated on) during surgery. Background technique [0002] Surgical operations are broadly divided into operations performed by making a large incision of the abdomen or chest (hereinafter referred to as laparotomy) and endoscopic operations performed through a small hole in the abdomen or the like. [0003] In these surgeries, organs are resected, extracted, etc., and organs other than the target organ (extra-target organ) may be in the way during this operation, and it may be difficult to operate. Therefore, it is desirable to secure a visual field for surgery by excluding other organs that obstruct the field of view. [0004] As a method of suppressing the target external organ, in addition to the method of tilting the patient's body to rely on gravity, there is also a method of pushing away the target external organ using a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/02A61B17/00
CPCA61B17/0218A61B2017/00898A61B2017/0212A61B2017/0225A61B17/02A61F13/36
Inventor 滨口武之
Owner KAWAMOTO CORP