FR2615724A1 - Haemostatic apparatuses for scalp operations - Google Patents

Abstract

Haemostatic apparatus for scalp operations making it possible to operate surgically without haemorrhage. It consists of an incurvate frame 1, a frontal backing strap, a parietoapical band and a backing chin strap. Air chambers allow inflation for pneumatic compression against the skull. The invention is in particular intended for scalp grafting operations for surgical treatment of baldness.

Description

HEMOSTATIC APPARATUS FOR SCALP OPERATIONS
The invention relates to a pneumatic pressure device for temporarily stopping blood circulation in the scalp and facilitating surgical operations there.

 An apparatus of this type is known and described in French document 2054.858, an apparatus in which a metallic and pouryu # frame of an inflatable pneumatic cavity is fixed by a strap which is wrapped around the head.

 The disadvantage of such a device is that it only provides circulatory arrest in the framed area, and in this framing, it limits the operable region to the lower part of the occipital region, since the framing can only remain stable if it is located in the zone diametrically opposite to the front. On the other hand, if the operation must be done on a higher region of the occipital region, at the time of pressurization, the device will slide upwards, will escape from the head, preventing any surgical use.

 In addition, if the operation must be located in the front region, the inflatable pneumatic frame will not act on this latter region. In fact, experience shows that the hemostatic effect only works if the area is completely surrounded by pneumatic pressure and if it is close to a few centimeters from the operating field.

 Another device of this type is described in the American document 4210.147, moreover obviously inspired by the previous one.

In this device, the inflatable pneumatic cavity exists only in a front anterior portion intended to ensure the mechanical pressure of the frame on the occipital zone. With this device, no area of
pneumatic pressure the henostatic effect is
nonexistent.

Finally, a device that would enclose the head in a
Cotctt has two drawbacks: on the one hand
quickly leads to intolerable pain due to
peripheral pressure on the other hand at the point
apical, corresponding to the parieto-apical strap of
the present invention pass through perforating arteries
crossing the bony skull and letting the
blood despite the circular pneumatic tourniquet.

The aim of the present invention is to produce a hemostatic device at pneumatic pressure making it possible to completely frame an operating area of the scalp, depending on the need, sometimes the occipital area,
sometimes the parietal zone, sometimes the frontal zone.

The present invention comprises the combination of an occipital frame made of elastic flexible metal with an extension at its two ends, of a counter strap
frontal, with a diametric parieto-apical upper band
trally opposite to the chin on the tajet of the perforating arteries of the skull and of a chin strap, an inflatable pneumatic cavity filling both the occipital frame with its two ex
extended ends, as the frontal band and the apical band. These three pneumatic cavities, although independent, leave no space between them and can be inflated separately or simultaneously by two.

 The invention is set out below in more detail with the aid of drawings.

 Figure I shows an elongated rectangular frame I of flexible semi-rigid elastic metal, having a rectangular window 2, and or middle of each short side of the rectangle an extension 3, so that the assembly, - curved in the direction of the length along a radius a little greater than the average radius of the occipital curvature of a human head -, Reads a total length equivalent to 4 IL distance from one ear to the other measured on the scalp either 20 to 22cm on average.

 Each end will have a lug 4 on which will be attached a cylinder unit described below. The concave face of this part will include a rubber air chamber (dotted 5) in connection with a nozzle 6 passing through the frame and on which the inflation hose will adjust.

 Figure 2 shows a cylinder unit: small cylinder? with screw and notched part 8 pierced with small holes 9 and 10 for fixing on the parts to be brought together, allowing the approximation and adjustment on the head of the inflatable parts and of the counter straps.

 FIG. 3 shows a profile head comprising, in profile view, the rectangular frame I and its extension 3, the assembly fixed to a front counter strap 8 by a jack unit on each side. The front strap is fitted on its entire concave face with an air chamber connected to an inflation nozzle passing through the strap.

 A parieto-apical strap 9 also provided with an air chamber on its concave face and with an inflation end piece passing through it, is articulated on the two ends of the counter strap 8 by means of two jack units 7. Its air chamber is flush with its end with the air chamber of the counter strap 8.

 A chin strap counter-hinge is articulated at its ends with the counter-strap 8 at the same point as the strap 9, being in the extension of the parieto-apical strap 9 and being intended to ensure a narrow application of this strap 9 against the skull.

In its center, the rentonnière counter strap 10, presents at the place of the support of the chin, a hollow part it furnished with foam rubber and damping the support on the chin.

 Figure 4 shows the device out of the head, in connection with a pear inflation manometer with three directions, each with a tap 12, thus making it possible to exclude one or the other of the air chambers during the setting under pressure.

 Thus, the isolated pressurization of the frontal and apical air chambers completely frames the front field, and makes it possible to ensure a complete circulatory stop at this point.

 The isolated pressurization of the two occipital and apical chambers allows an operation in field B apico-occipital field. The pressurization of the occipital chamber in isolation allows an operation in the occipital field C. Thus, for a hair transplant operation for correction of baldness, a particularly hemorrhagic operation, consisting in taking graft-scalp grafts in the area occipital and to place them sometimes in the frontal area, sometimes in the upper occipital area (tonsure area), the graft removal will be done by inflating the only occipital cavity framed by frame I. For the second operative time, the placement grafts in the balding area, stil it is a baldness of the tonsure, the apical cavity will also be put under pressure, on the other hand if it is a frontal baldness, the occipital pressure will be released and only the frontal and apical cavities will be swollen.

Claims (3)

I: hemostatic device for operating the head of a human being comprising a rectangular, elongated, curved, semi-elastic metal frame, comprising two extensions at the ends of the rectangle, at the ends of the extensions is fixed by diary of small jacks, a strap flexible metal intended for circular fronto-temporal pressure, another metal strap fixed to the previous one by a small jack on each side, ensures parietopical pressure, a chin strap against also fixed by a small jack ensures the back pressure of parieto-apical pressure.  2: Apparatus according to claim I characterized in that the frame and its two curved extensions with a radius a little greater than that of the head has on its concave face a rubber cavity inflatable by a nozzle passing through the metal plate ; the frontal and parieto-apical straps each have an inflatable rubber cavity on the concave face by a nozzle passing through the strap.  3: Apparatus conforming to claims 1 and 2 in which a pear manometer with three directions comprises for each direction a stop valve for selecting the cavity to be excluded from the inflation circuit.