Device for preventing abrasive injury from skin and fat aspirati

Surgery – Means for introducing or removing material from body for...

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604175, 604902, A61N 130

Patent

active

052135675

DESCRIPTION:

BRIEF SUMMARY
CROSS REFERENCE TO RELATED APPLICATIONS

This application is a National Phase of PCT/JP90/01654 filed Dec. 19, 1990 and based upon a Japanese International Application 330131 1989 filed Dec. 20, 1989.


Field of Invention

The present invention relates to a device for preventing abrasive injury from skin to be used in the case of inserting a bar-like body such as cannula into a biological body including human bodies for treatment and examination, a fat aspirating device for aspirating a fatty fraction in human bodies, and a fat aspirating method.


Background Art

As one of the methods to treat severe obesity and adiposis, there is included a method to remove fat per se surgically. The fat aspirating method reported by Louise in 1978, France, in particular, has been distinctly common since the incisions on skin according to the method are relatively small and the method promises a reliable therapeutic effect.
According to the fat aspirating method, there is employed a fat aspirating device provided with a metallic fat aspirating tube having pores in the vicinity of the tip thereof and of a several-mm diameter, for example, 2 to 3 mm, and with a vacuum aspirating means being connected with the fat aspirating tube and producing a negative pressure.
Fat aspiration is carried out by incising skin at a relatively small size, inserting a fat aspirating tube through the incision into a fatty layer inside a body, and removing fat, through the pores on the vicinity of the tip of the fat aspirating tube, outside the body by means of a vacuum aspirating means. Such fat aspiration is not carried out while fixing a fat aspirating tube at a predetermined position, but the tube is manually operated to make round-trip motion at a rate of approximately 80 to 120 times per minute. One-hour requirement for aspirating fat in belly, for example, forces a fat aspirating tube to make round-trip motion at a rate of about 4800 to 7200 times through the insertion site of the fat aspirating tube, i.e. through the incision site.
Accordingly, on the skin on the circumference of the incision site damages are caused such as, for example, pressure-induced abrasion, abrasive injury, and abrasion, and the size of the incision site is more enlarged than the initial size thereof for example by a factor of 1.5, leading to severe damage to tissues. Hence, the scar of the incision site is apparently identified and marked after the operation.


Objects of the Invention

The object of the present invention is thus to provide a device for preventing abrasive injury from skin on the circumference of an insertion site of a bar-like body such as cannula to be inserted into a biological body and be made to move.
Another object of the present invention is to provide a fat aspirating device and a fat aspirating method, capable of performing fat aspiration under the condition to insert a fat aspirating tube while preventing the abrasive injury of skin.


Summary of the Invention

The device according to one embodiment of the present invention, is provided with a pipe inserted into a biological body and having a bore portion through which a bar-like body is inserted into a biological body, the pipe is provided with a flange having an aperture communicated with the bore portion and connected with the pipe and facing the skin of the biological body when the pipe is inserted into the biological body.
According to the present invention the device thus structured is inserted into a biological body but does not directly contact to skin in order to protect skin of the biological body and the vicinity thereof. As a result the abrasive injury on the skin due to the motion of the bar-like body can be prevented. Hence, the scar on the skin at the insertion part of the bar-like body after surgery is of a light degree, and the scar is not identified, apparently.
According to another embodiment of the invention, a fat aspirating device comprises a fat aspirating tube having pores in the vicinity of the tip thereof, a fat reservoir means being connected to the fat aspir

REFERENCES:
patent: 4536180 (1985-08-01), Johnson
patent: 4578063 (1986-03-01), Inman et al.
patent: 4781694 (1988-11-01), Branemark et al.
patent: 4815462 (1989-03-01), Clark
patent: 4863438 (1989-09-01), Gauderer et al.
patent: 4936826 (1990-06-01), Amarasinghe
patent: 4944732 (1990-07-01), Russo
patent: 5013300 (1991-05-01), Williams

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