FR2683991A1 - VISCAR SPREADER FOR VIDEOSCOPIC SURGERY. - Google Patents

Abstract

The invention relates to a video surgery instrument intended to retract the viscera masking the operation site. Said instrument is comprised of two parts, a body (1) which may be introduced by one of the operator trocars (8) used in videoscopy surgery, by means of a tool-holder (6), and a very thin handle (4) provided with a point (10) which punctures directly the wall, with respect to the organ to be retracted. The assembly is carried out under videoscopy control inside the organism of the patient by fixing the handle to the body of the instrument. The tool-holder is then released from the assembly and removed, thereby freeing the operator trocar. The retractor is thus handled from the outside. The puncture orifice is hardly visible due to the fineness of the handle and the absence of trocar. A plurality of retractors are thus usable with very few aesthetic sequelae.

Description

 The present invention relates to a viscera retractor for videosurgery and in particular for laparoscopic surgery.

 Existing retractors require the permanent use of one of the 5 mm or 10 mm diameter trocar operators, sometimes located at a distance from the area or the organ to be removed.

 The device according to the invention is introduced into the abdominopelvic cavity by an operating trocar, which is then released to receive the operating instruments proper.

The retractor is assembled in the abdominal cavity under videoscopic control. The handle of the instrument directly transfixes the wall, above the organ to be removed. It is fixed to the body of the instrument which has been previously introduced. At the end of the intervention, the exteriorization is preceded by disassembly according to a reverse path.

The advantages of the method:
~ possibility of using several spacers without installing an additional trocar.

~ skin holes created by the passage of the sleeves giving scars which are not very visible due to their small size
, placement of the spacer (s) near the organs to be removed.

 shape which can be adapted to the member to be removed.

 The instrument has 2 parts, the body and the neck. The body is introduced into the Celvian abdominal cavity using a tool holder.

 Figure 1 shows the body seen from the front (1), profile (2) and bottom (3).

 Figure 2 shows the handle seen from the front (4) and from below (5).

 Figure 3 shows the tool holder seen from the front (6) and from below (7).

The dimensions are given by way of nonlimiting example.

 The body of the instrument (fig 1) measures 40 to 80 mm long, 10 mm wide, 4 mm thick. Its profile (3) is such that it can be introduced by a trocar of 10 mm internal diameter (8).

 I1 has several cavities provided with a thread (9), which will be used to fix the handle. Depending on the cavity occupied, the instrument will assume a different shape (fig 4). It can be made of metal or plastic.

 The handle (fig 2) made of rigid metal, measures 250 to 350 mm in length and 2 inni in diameter. One of its ends is provided with a sharp point 2 mm long (10) then a thread of 2 mm long eyelash).

The other end (12) used for gripping and holding the instrument, has a diameter of 5 to 7 mm.

It is perforated with an opening of 3 to 5 mm in diameter (13), which will allow the instrument to be suspended in one of its uses.

 The tool holder (fig 3) used to introduce the body into the abdominal cavity by an operating trocar 10 mm in internal diameter is cylindrical, its diameter is 10 mm. One of its ends is provided with a threaded area 2 mm long and 2 mm in diameter (14).

 Use (fig 5): The body of the retractor (16) fixed to the tool holder (17) at one of its ends is introduced into the abdominal cavity (15) by a trocar (18) of 10 mm diameter. Videoscopic subcontrol, perforation of the abdominal wall, vertical to the area to be removed, by the point of the handle (10), which will then be fixed to the body by screwing at one of its fixing sites (9 ). The tool holder is then separated from the assembly and removed by the trocar, which being released will become operational.

Claims (4)

 1) Videosurgery instrument, used to remove the viscera which mask the operating area, characterized by:  ~ A body (1) whose profile is such that it can be introduced by one of the trocards used in videoscopic surgery (8), and the presence on its surface of several cavities provided with a thread (9).  a thin and rigid handle (4), having at one of its ends a sharp point (10) then a thread (11), and on the other a transfixing orifice (13).  a tool holder (6) provided with a thread at one of its ends (14).  2) Instrument according to claim 1 characterized by a rigid and thin handle (4), directly puncturing the abdominal wall above the organ to be removed to attach to the body.  3) Instrument according to one of the preceding claims, characterized in that the threaded cavities of the body (9) have different orientations allowing during assembly, obtaining an instrument with a shape adapted to the member to be removed by depending on the cavity used.  4) Method of assembling inside the abdomen of a retractor with several elements, characterized in that the body (1) is introduced by a trocar using the tool holder (6), that the '' the handle (4) is fixed by screwing after introduction without a trocar of its carrying end of a tip (10) and a thread (11), and that the tool holder is separated from the assembly by unscrewing before to remove it from the abdomen.