WO1996019149A1

WO1996019149A1 - Endoscopic surgical instrument

Info

Publication number: WO1996019149A1
Application number: PCT/BR1995/000066
Authority: WO
Inventors: Ronaldo André POERSCHKE
Original assignee: Poerschke Ronaldo Andre
Priority date: 1994-12-21
Filing date: 1995-12-20
Publication date: 1996-06-27
Also published as: BR7402312U; AU4427996A

Abstract

Endoscopic surgical instrument comprising a handle portion with means for gripping the instrument, the shaft extending from the gripping means and, means for actuating the instrument. The end of the shaft of the instrument is adaptable to be used with a plurality of tools, such as: grasping members (forceps), or cutting members (scissors blades), or needle holders; and each includes means for engaging the actuating means.

Description

ENDOSCOPIC SURGICAL INSTRUMENT

The above mentioned utility model is refer to as a starter system and/or support for surgical instruments, with its main aim to ease trauma by reducing the numbers and sizes of incisions, or by making incisions dispensable which occur during surgical treatment and diagnoses in video surgeries.

The polyvalent cable, as the majority of its are made by steel industry, using inox steel number 304, classified quality steel for surgical purposes (or of the likes). Also, it brings a capillary tube of steel number 304 fabricated by prolonged fusionings.

Presently, the surgical process micro-invading instruments has its highlights on video cameras guided surgeries. Surgery is undergone with the use of appropriate instruments which goes thru the tubes to enter the human body. These tubes, called trocartes, are placed in a way to transfix the smooth anatomical walls of the region to be operated, after making a small incision on the skin thru where the trocarte is installed.

Consequently, the region to be operated may or may not be treated with insuflation (carbonic gas is more in use now adays) according to visual and operative necessities. The numbers of these trocartes, and incisions varies a lot as persize of surgery. The average being 4 trocartes, 2 of 10mm which needs incisions of 10 to 15mm and 2 trocartes of 5mm which needs incisions of 7 to 9mm.

This instruments was developed to reduce the number incisions or to just eliminate them all together. With the polyvalent cable, the skin and the rest of the anatomical wall components are managed at the region to be handled, with the rod or tube of capillary dimensions. It is hereby understood that tubes with capillary dimensions are those that transfix the skin such as a needle, thus, dispensing surgical incisions. The rod or or capillary tubes support and allows for the starting of the instruments developed for these purposes.

The said surgical instrument is divided into groups according to the purpose of material in synthesis, cut, grasp, hemostasis, dissecting, removal and special materials, the latter beings specific instruments for some specialized surgeries. The instrument use in video viewed surgeries can be classified in a similar way: cutting instruments, graspings, hemostasis, synthesis, removal and the special, like intestinal and vascular clamps, strong pincers for graspings, asperators, biopsia and optical instruments. All these instruments for video guided surgeries can be used for medic-operative performance with the polyvalent cable. However, these types of instruments must be adjusted in structural order or manufactured to meet compatibility usage with the polyvalent cable.

The followings are the maim instruments in use the polyvalent cable: hemostatic pincers, dissecting pincers, graspings pincers, scissors, electro-cautery scissors and pincers, mechanic sutural apparatus, needle holders, intestinal and vasculars clamps, clippers, thread leads, removers, asperators, electro-cautery, bisteries, lazer bisteries and crushers.

The polyvalent cable is made up of a starter system. A capillary tube for support (or a rod), a lead for power transmissions, a copulative system and a funcional system. The latter would be the type to copulate to the polyvalent cable. The starter system used is similar to those that have already been in use for many years now by other surgical utility models. Also the power system for transmission uses a rod that allows forward and backward moviments which opens and closes the instruments, is of commom use. To best understand this instrument, follow the detailed description with illustrations.

Reference to these figures, one can observe the penetrating needle of the instrument in the human body (1), which also serves to fastened the power transmission mechanism of the polyvalent cable, to the copulating instrument as detailed in figure 3, 4 and 5. The needle (1) is held at the extreme end of the lead (2) which moves freely within the tube (3) when switched on by a lever (5) to which it is fastened by a cilindric part (6). The levers (4) are steadfast whils the other (5) is mobile, allowing opening and closings of the copulating instruments that make up parts of this utility model. On this lever system one can notice in the extreme end of the tube, thread for copulation and is communly found in the instrumental market.

Figure 2 shows a pincer copulated to the polyvalent system. In figure 3 one can also notice pincer connected to the polyvalent cable where the gripes of the pincers can be seen. It is observed that the needle (1) is seen inside the copulative system.

Figure 4 brings a copulative scissor and (20) are its blades. The 9 part of figure 4 is similar to part 9 of figure 3. The 10 part of the power transmission system slides freely when the lever is turn on (5) by the surgeon that starts the instrument. The (11) part and the lock of the needle (1) is basculable on part (10). When the copulating instruments are installed to the polyvalent cable and when part (9) is screwed to the tube (2) the needle will remain within part (10) and the lock will turn on manually (or with the help of a common pincer to avoid puncturing the surgeons glove) securing the needle (1) whilst the lead goes thru the split (9) as indicated in figure 8.

The figure 5 shows part 9. Its configuration is a cilinder, with an opening where one can see in figure 3 of part (10) and where lock (11) is acessible to the operator or the instrument. At the extreme end of part (9) there are two narrowings (16 and 17) with (16) having a thread inside and thru it passes the needle (1) to be fastened ahead on part (10). On this thread in the narrowings (16) tre capillary tube (3) is fastened. On the opposite end of (16) there is the narrowing of (17) where the lead (12) (fig. 6) goes thru start the copulative instrument. At the extreme end of the narrowing of (17) there is a perfuration that allows passage for a small axle (18) that manages the opening and closing with instruments (pincers, clamps, scissors and clippers). Further details are not given on the mechanism of the opening and closing of the instrument due to the fact that the one in use is already of long usage.

In the figure 6 comes with a starter rod 12 of the copulative instrument. Part 10 is hemicilindrical, closing at the end where the lead (12) is fastened, and opens on the opposite side where the needle (1) goes thru. The lock (11) has the form of the letter "L" and is hinged to part (10) by a axle (13).

The figure 7 shows part 10 with a needle 1 locked in the inside. The figure 8 shows the lock (11) that holds the needle 1. The axle (13) allows for opening and closing of the lock. Thru the split (19) passes the axle (2) when the lock is turned on.

In the figure 9, one can notice the design that reveals the functioning of the utility model in question. After transfixing the pacient with the polyvalent cable, the surgeon sets up the instrument (in the case of design is a clipper) while putting the needle (1) thru the narrowing (17), at the same time as part 9 is screwed to the capillary tube (3) until the needle is in part (10). The surgeon should then turn on the lock (11). When the lock (5) is turn on, the lead (2) runs in the inside of the tube (3) pulling or pushing the needle (1), which is fastened to part 10, transmitting the movement and repassing on to lead (12) thus starting the mechanism of opening and closing of the copulative instrument. Thru the polyvalent cable (and the copulative instrument) cautery can be done (electro-coagular) on bleeding anatomical structure once the electric isolation is provide, and connection is done to a electro-coagulator. The electric isolant used as linen in the capillary tube (3) can become "slack" allowing the sliding of the capillary within, reducing frictions with the anatomical structure.

However, what is new in this instrument is the use of capillary tube with diameters similar to medical needles which keep surgical trauma to a low. Inside the human body it supports and starts instruments that would not pass thru the cappilary tubes with openings of 1 to 2,5mm in diameter. Beside this advantage, this utility model allows for the turning on of different surgical instruments.

Claims

CLAIMS 1. The polyvalent cable for surgical instruments, characterized by bearing a needle (item 1 of figure 1) at the extreme end of the lead (2) . The lead (2) goes thru the inside of the capillary tube (3), this capillary tube is connected to the starter system on its backward end (4, 5, 6) . On the forward end of the capillary tube (3) there is a thread (7) where a copulative instrument is fastened.

2. The polyvalent cable or surgical instruments, according to claim number 1 is characterized by allowing the copulation of different instruments (fig. 2 a pincer, fig.4 a scissor, fig. 5 a needle holder).

3. The polyvalent cable for surgical instruments, according to claim number 1 is characterized by presenting copulative instruments. This composts of a tube semi-open (item 9 of fig. 3) of which its extreme backward end has a thread (fig.5, item 6) to screw on to the capillary tube (item 3) and at its extreme forward end of the semi-open tube (9) is found the articulated system of pincers and scissors. The partially opened tube (9) shows the power transmission internally with the needle (1) fastened inside part 10 (fig.3) by the lock

(11) that manages part 10. From this part appears the rod

(12) that starts the mechanism of opening and closing of the instrument.