JPS6242624B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention has a sterile air flow directed tangentially to the surgical field, and this air flow is similar to the original patent No. 1374279 (Japanese Patent Publication No. 61-29745). According to the publication (Japanese Publication), it relates to a clean space generating device for a surgical field that is directed toward the surgical field from an area outside the surgical field.

The antiseptic action of sterile air abrasing the surgical field makes the surgical field safe and sheltered from germs entering from the outside. However, in locations where air currents flow, there is a risk that individual bacteria may penetrate the air space and be pushed into the surgical field. In particular, in the field of surgery to be carried out, consideration must be given to the large amount of airflow that impinges on the hands and arms of the operator. This narrow surgical field is not particularly resistant to infection.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to improve a surgical field clean space generating device of the above-mentioned type in such a way that germs are prevented from entering the surgical field even in the area of the air flow.

To solve the above problem, we have a basic element oriented towards the surgical field, which basic element includes at least one air flow for the flow of sterile air in the direction of the surgical field and around it. In a clean space generating device for a surgical field provided with an air outlet, the present invention provides that the sterile air flow surrounds the surgical field tangentially and consists of a number of layers concentrically surrounding the surgical field; Each of these layers has a row of air outlets arranged side by side, said rows being arranged in the basic element one above the other with respect to the operating field, with the respective upper layer extending below it. The structure may be such that it is formed as a closed part between the layers.

In the present invention, the sterile air flow surrounds the surgical field tangentially and consists of multiple layers concentrically surrounding the surgical field, so that the clean air flow does not directly impinge on and dry the surgical wound in the surgical field. is prevented. These individual flows form a labyrinth packing around the object causing the flow. If the upper air layer is still invaded by bacteria in its flow position, this is carried away by the lower air layer. In that case, the bacterial vortex in the upper air layer is adapted to keep the operating field clean, as long as the bacteria in the vortex is received and carried away by the lower air layer.

According to a preferred embodiment of the invention, a controllable built-in device is provided for creating an air layer at the air outlet and the air intake. The device can be opened or closed depending on the respective requirements. In this way, air layers of different thicknesses and different flow speeds can be created.

Further details of the invention will become apparent from the accompanying drawings and the following description, in which preferred embodiments of the invention are embodied.

Embodiments of the present invention will be described below with reference to the drawings.

The clean space generator for the surgical field is essentially a blower 1.
and suction head 2. From the blower 1 an air stream 3 advances in the direction of the suction head 2 and is sucked in from the suction head via a conduit system 4 . The blower 1 and the suction head 2 are arranged above the plate 5 of the operating table 6, so that the air stream 3 flows over the part of the plate 5 which serves as the operating field 7 and where the operation takes place. In that case, the blower 1 and the suction head can be aligned with each other using a hinge so that the air stream 3 runs precisely over the operating field 7. Since the surgical field 7 can have various shapes depending on the required surgery, the blower 1 and the suction head 2 are fixed to their rods 8 so that their height can be adjusted. The blower 1 and the suction head 2 are controlled in such a way that the air flow 3 travels tangentially through the surgical field 7. The surgical field is thus placed away from the direct clean space flow range by tangential flow.

In order to achieve as tight a seal as possible against the ingress of germs, the air flow 3 is distributed into two independent layers 10, 11 arranged one above the other. These layers are connected to the built-in equipment 9 provided in the blower 1.
generated using This built-in device is a somewhat large air outlet 1 provided in the blower 1.
2 and 13 can be opened each time as needed. In addition, a device 14 built into the suction head 2
can be provided, and using this built-in device, the inlet 15 for receiving the air flow 3 is connected to the air outlet 12,
It is distributed into a number of subapertures corresponding to the number of 13.
In this way a strongly concentrated layer of flow is maintained from the air outlets 12, 13 to the inlet 15. These concentrated air layers work together to generate a good vortex in the area of the air flow 3, so that in the unlikely event that individual bacteria reaching through the layer 10 will encounter intense turbulence and By suction head 2
carried away in the direction of

The built-in devices 9, 14 can be designed as louvres, which are connected to the rolls 16, 1 in order to open the air outlet or inlet 12, 13, 15.
It can be rolled up above 7, 18, 19.
To close the openings 12, 13, 15, the louvers are unwound from the corresponding rolls 16, 17, 18, 19 and slid in guides (not shown) over the openings 12, 13, 15. In that case, these openings are each closed to a greater or lesser extent depending on the immediate requirements. To that extent, the louvre is divided into a number of individual layers in order to adapt it as fully as possible to the respective situation. These layers can be operated independently of each other so that the position of the air outlets 12, 13 can be changed in the blower 1. So, for example, on the one hand, roll the louver 1
Rewind greatly from 9 and roll the louver to 18
By winding it up, the position of the air outlet 13 can be moved significantly to the midpoint of the blower 1. In addition, the air outlets 12, 13 can be opened more or less widely by rolling the louvers a little more, so that the thickness of the layers 10, 11 can be influenced in this way.

Instead of louvers, air flaps can also be provided for closing and opening the air outlets 12, 13. These air flaps can be controlled by a lateral displacement or folding movement in order to open and close the air outlets 12, 13, respectively, as required.

In many cases, on the side of the blower 1 different layers 10,
The airflow 3 distributed to the suction head 2 as a whole
It can be said that it is advantageous if it is absorbed by In this case, the device 14 of the suction head 2 is completely opened so that the air stream 3 can enter the suction opening 15 with its full width.

In order to operate the layers 10, 11 and the total air flow 3, a basic element 20 is provided, which is a housing in which the air outlet is arranged, and which contains an impeller and a filter. Therefore,
The basic element 20 forms the blower 1 together with the impeller and the associated filter. The technology of how purified air is produced does not belong to the present invention. Producing clean air is a common solved problem and is not critical to the present invention. The upper and lower sections 21, 22 of this basic element are curved in the direction of the air flowing out of the blower 1. Air layer 1 flowing out from air outlets 12 and 13
0 and 11 are concentrated in the direction of the suction head 2,
Air outlets 12, 13 are provided in curved upper or lower compartments 21, 22. In this way, the air flow 3 in the area of the entire operating field 7 is strongly concentrated so as to constitute an air flow sufficient to transport germs. The air flow 3 can be strongly concentrated in accordance with the formation of the respective operating field 7 by making the curvature of the basic element 20 more or less pronounced. For this purpose, the basic element 20 is designed flexibly in such a way that the upper or lower sections 21, 22, respectively, can be curved as required.

Furthermore, the basic element has a curvature transverse to the longitudinal direction of the air stream 3 (see FIG. 2). The air stream 3 flowing out of the basic element 20 curved in this manner flows over the operating theater 7 like a roof. For example, if it is narrow and high due to the corresponding position of the body to be operated on, then the basic element 20 is pulled down significantly on both sides so that a very narrow and very high curved air flow 3 occurs. Correspondingly, the air outlets 12, 13 formed in the basic element 20 are deformed.

In order to be able to aspirate the air flow 3 with sufficient capacity with a highly deformed basic element 1, the suction head is also formed flexibly as an auxiliary element 23. The deformations of the basic element 20 and the auxiliary element 23 must be carried out correspondingly in order to achieve as concentrated an intake of the air flow 3 as possible. For this purpose, the auxiliary element 23 also has curved upper or lower sections 24, 25, in which inlets 15 for the layers 10, 11 of the air flow 3 are provided.

In order to further protect the formation of air layers 10, 11, air outlets 12, 13 are formed as nozzles. These nozzles are particularly suitable for generating concentrated air flows.

Another possibility of modification is that the speed of the air flow is adapted to the particular situation. Depending on the length of the operating field 7 in each case, more or less high air velocities can be allowed in the air flow 3. Others, individual layers 1
0,11 can also have the same or mutually different flow speeds. In many cases, the air layer 10,1
1 to flow against each other, the air layer 10 is almost directed from the suction head 2 toward the blower 1, and the air layer 1
1 flows in the direction from the blower 1 to the suction head 2.

Air guidance in the basic element 20 can also take place with webs 30. This has the advantage that it is designed in the form of the basic element 20 and that it can be kept sterile in a simpler manner than with a large bulky design of the air guide. The individual webs 30 of the basic elements 20 can be formed in sequence and individually placed in a pressure cooker for sterilization. During assembly, grip the web 30 with a sterile cloth and attach the basic element 20.
to be joined to. The air outlet of the web 30 can be designed as a nozzle. In this way it is possible to direct the airflow in a predetermined direction. In order to further reduce the air volume inside the basic element 20, a tube 31 passes through the web 30. These tubes are kept at a small spacing so that the air leaving the air outlet of tube 31 forms a uniform layer directly behind the outlet. Further, the air outlet of the tube 31 can also be formed as a nozzle. The individual tubes 31 can be made of flexible material so that the deformability of the basic elements is guaranteed. In order to optimally adapt the basic elements to the surgical field to be abraded, the individual webs 30 are interchangeable. In this way, by connecting the individual webs 30 in different ways, many deformation possibilities can be created for the formation of the basic element 20.

The blower 1 and the suction head 2 can be rotatably arranged on the plate 5 of the operating table 6 using a rod 8 so that the height can be changed. Furthermore, it is also possible, however, to fasten the blower 1 and the suction head 2 to a stand which is held independently and separately from the workbench 6. In all cases, however, a shielding body 26 can be provided in the space between the operating plate 5 and the lower section 22 of the blower 1. As a result, the operating field 7 must be made smaller with respect to the space in front of the blower 1. Otherwise, some dirty air may be drawn into the operating field 7 from that space through the air stream 3. This shingle body 26 should be made of as flexible a material as possible in order to be able to adapt to any control of the blower 1.

Additional Relationships The original patent has a flow of sterile air directed toward the surgical field from an area external to the surgical field, with this air flow being directed tangentially to the surgical field. Patent No. 1374279 (Japanese Patent Publication No. 61-29745) This is an essential part of the structure of the invention; This invention achieves the same objective as the original patent application in that it keeps the space above the surgical field free of germs.

[Brief explanation of the drawing]

Fig. 1 is a side view of an operating table with a clean space generating device for a surgical field, Fig. 2 is a front view of a blower, and Fig. 3 is a longitudinal sectional view of the blower with an attached suction head.
FIG. 4 is a perspective view of the blower with integrated louvers, and FIG. 5 is a front view of the blower with webs. 3... Sterile airflow, 7... Operating theater, 10,1
1...Multilayer.

Claims (1)

[Claims] 1. having a basic element oriented towards the surgical field, the basic element being provided with at least one air outlet for a flow of sterile air to flow in the direction of and around the surgical field; In a clean space generator for a surgical field, the sterile air flow surrounds the surgical field 7 tangentially and consists of a number of layers 10, 11 concentrically surrounding the surgical field 7, each of these layers having: A row of air outlets arranged side by side is assigned, said rows being arranged in the basic element 20 one above the other with respect to the operating field 7, in each case of layers 11 with an upper layer 10 extending below. A clean space generating device for a surgical field, characterized in that it is formed as a closed section.