JPH06285155A - Suction tool for surgical operation - Google Patents

Abstract

PURPOSE:To conduct continuous suction of operation field body fluid and reduce frequency of suction operations during a surgical operation by covering the outer circumference of a flexible hygroscopic material with a flexible thin film member having airtightness, and exposing a tip of the hygroscopic material from the thin film member. CONSTITUTION:In a suction tool 10, an outer circumference of a hygroscopic material 11 formed into a slender shape is covered with a resin film 14, and a tip 11F of the hygroscopic material 11 is protruded from the resin film 14, while a rear end 11B of the hygroscopic material 11 is converged to be connectable to a flexible tube 16. The flexible tube 16 is to be connected to a suction pump for a surgical operation, and connection of the tube 16 to the hygroscopic material 11 enables forcible suction of body fluid and the like at the tip 11F of the hygroscopic material 11. By fixedly arranging the tip 11F of the suction tool 10 at an appropriate position during a surgical operation, the body fluid can be forcibly sucked and discharged always stably from an operation field via the tube 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a body fluid suction device for use in surgery, particularly brain surgery.

[0002]

2. Description of the Related Art In surgery, blood and other body fluids are removed from the operative field to ensure better operability. in this case,
Conventionally, means such as suctioning body fluid using a vacuum tube or absorbing the body fluid with cotton (gauze) has been adopted.

This is also the case in brain surgery, during which the body fluid and lavage fluid are constantly removed by a suction tube and cotton. Brain surgery has the peculiarity that it is necessary to proceed with peeling or excision of microscopic regions with great care because even a slight injury or bleeding will result in permanent recovery, but conventionally, especially for brain surgery. No special suction means existed, and a metal suction tube was connected to a vacuum pump, and the tip of the suction tube was carried to the operative field to suck body fluid and the like. The timing of using the suction tube is determined by the operator according to the amount of bleeding and the amount of the washing solution to be added. Distribute the cotton by absorbing it, and replace the cotton at an appropriate time.

[0004]

The material of the conventional surgical suction tube is metal. The use of metal tubes is traditional, and there are many possible reasons for this, but first, because it is necessary to clean the plasma that clogs the suction orifice with a piston, repeated use with flexible materials such as resin Second, it must have chemical resistance (or heat resistance) during disinfection, and third, conventional ceramics can be damaged when dropped or hit with other equipment. Things can be mentioned.

As a matter of course, the metal tube easily damages the tissue. For this reason, the suction tube is not carried into the surgical field (brain tissue portion) inside the bone window unless forced suction is required. Therefore, except when a large amount of bleeding that hinders the operation of the operation is observed, or when the amount of the washing solution added increases to make it difficult to see the operative field, it is common to let the cotton absorb during normal operation. The surgeon holds the suction tube in his hand and performs forced suction only when the need arises, such as sudden bleeding. Such a suction operation is a traditional technique of brain surgery, and does not itself include a fatal problem that particularly impairs the patient's life.

[0006] However, the conventional suction tube is one of the factors that hinder smoother surgical operation in that continuous suction cannot be performed during the operation. Especially in the case of brain surgery, even a slight tissue destruction is dangerous, so it is not possible to fix the hard metal tube in the operative field, so continuous continuous suction is impossible and sudden bleeding occurs. If the operative field is contaminated by the washing liquid or the irrigation solution, the forced suction must be performed while interrupting other operations. The time loss of this suction operation is at most 10 seconds, but this interruption often hinders the concentration of the surgeon in charge.

[0007] Generally, in brain surgery, the dura mater (dural brain membrane) on the side of the skull is separated from the arachnoid membrane in order to reach the affected part from the open bone part (bone window), but it enters the inner part. During the tissue exfoliation operation, it is preferable that the number of other operations such as suction operation that interfere with the intended surgical operation is as small as possible.

[0008] Therefore, an object of the present invention is to enable continuous suction of operative field fluid and further reduce the number of suction operations during surgery.

[0009]

In order to achieve the above object and to achieve the above object, the surgical suction tool according to the present invention has a flexible thin film having airtightness on the outer periphery of a flexible hygroscopic material such as cotton. While covering with the material, the tip of the moisture absorbing material was exposed from the thin film material.

[0010]

In the case of the surgical suction device according to the present invention, the tip of the hygroscopic material reaches the surgical field, particularly the deep affected area in brain surgery, and absorbs the blood-related fluid (and the washing fluid) in that portion.
On the other hand, since the outer periphery of the hygroscopic paper material is covered with a flexible thin film material having airtightness, by connecting the rear end portion to a vacuum, the absorbing action is forced by the depressurizing action inside the thin film material. As a result, it is possible to continuously suction body fluid at any deep part,
It is possible to keep the operative field visibility always clean.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows an example of a surgical suction tool according to the present invention. In this suction tool 10, the outer peripheral portion of a moisture absorbing material 11 formed in an elongated shape is covered with a resin film 14, and the tip portion F of the moisture absorbing material 11 is projected from the resin film 14, while the rear end of the moisture absorbing material 11 is formed. The part B is bundled so that it can be connected to the flexible tube 16.

The hygroscopic material 11 may be the same material as conventional surgical cotton. Therefore, for example, a conventional surgical cotton may be simply folded into an appropriate size and formed into an elongated shape. Of course, the material itself is not particularly limited as long as it is hygroscopic. That is, in addition to a conventional cotton substrate, a hygroscopic paper, a water-absorbent polymer, a laminated body thereof, or the like may be used. Further, the surface of the hygroscopic substrate 11 may be coated with a semipermeable membrane such as a non-woven fabric to prevent backflow of absorbed moisture.

The resin film 14 covering the moisture absorbing material 11 is not limited as long as it is airtight and flexible at room temperature. The airtightness required here means a material rigidity that does not cause cracks in the film material when vacuum suctioning the rear end portion for operation and airtightness that can achieve stable suction, It does not require complete air barrier in a strict sense. This is because the rigidity and airtightness at the time of suction are not necessarily a problem of the material, and can be freely set by the thickness of the resin film 14 and the number of windings. Therefore, when it is carried out at the minimum cost, it can be used even by simply wrapping the conventionally commercially available food wrap material.

Since the suction tool 10 needs to be used while being in close contact with human tissue, the resin film 14 is not toxic, does not exhibit melting at body temperature, and is easy to sterilize. Must meet the conditions. However,
Since the suction tool 10 is assumed to be disposable, as long as it can be sterilized before surgery, particularly strict material conditions such as chemical resistance and heat resistance are not required.

The tip F of the hygroscopic material 11 is projected from the resin film 14 so that the body fluid or the cleaning liquid is absorbed in the portion. The protruding size and the shape of the protruding tip portion (spreading degree, etc.) are not limited, but it is usually sufficient to set a protruding size of about 3 to 10 mm. Further, in order to improve the absorbability, the periphery P of the exposed base end portion of the hygroscopic material 11 has a resin film 1
It is desirable to fix it tightly to No. 4 to prevent the inflow of excess air. As for the method of making close contact, the simplest sewing with a thread is the easiest. The use of adhesives is possible, but of course those that affect human tissue should be avoided.

The rear end portion B of the moisture absorbent material 11 is formed in a shape connectable to the flexible tube 16. For example, it is focused into a cylindrical shape. This flexible tube 16 is
It is connected to a surgical suction pump (not shown),
By connecting the tube 16 and the hygroscopic material 11, it is possible to forcibly suck body fluid or the like at the hygroscopic material tip portion F. The connection method between the two is not limited as long as suction is possible.

However, in the conventional suction tube for surgery, the suction orifice has an inner diameter of about 1.5 to 2 mm, and it is not always easy to directly fit the rear end of the hygroscopic material 11 into this diameter. is not. Therefore, for example, as shown in FIG. 2, it is desirable to provide a connection adapter 20 to make the connection between the both easier. This is because by using the connection adapter 20, the shape of the rear end of the hygroscopic material becomes free, and the replacement operation during the operation becomes easier and faster.

The moisture absorbing material 11 is not covered with the resin film 14 on the entire rear end thereof, but is provided with an opening portion in a part of the resin film 14 so that the suction and suction are possible. In this case, the rear end portion b to be fitted in the suction tube may be entirely exposed, and a plurality of air holes may be provided at the rear end of the resin film 14.

Therefore, according to the suction tool 10, the distal end portion F of the suction tool 10 is fixedly arranged at an appropriate site during the operation, so that the body fluid is constantly and stably discharged from the operative field via the tube 16. It becomes possible to absorb and eliminate. The operator need only position and fix the tip portion F of the hygroscopic material 11 at an appropriate portion.

Since the suction tool 10 has flexibility both in the moisture absorbing material 11 and the resin film 14, the tip portion F is introduced into a deep part of the brain surgery, and the suction force is continuously fixed while being fixedly arranged. Can be done. Of course, the degree of suction force can be appropriately set on the pump side, and a cock (adjustment valve) can be arranged on the path of the flexible tube.

Since the conventional metal suction tube is not flexible, it cannot be fixedly arranged in the deep part of the brain, for example.
This is because even if a small external force is applied, the tissue inside the skull may be injured, and the straight tube is greatly reflected in the surgical microscope for visually observing the surgical field, and it is easy to obstruct the surgical operation. Moreover, even if a flexible tube was used, there was no change in obstructing the field of view, and continuous suction could not be performed. However, by using a flexible material coated with cotton, it is possible to arrange it in a free shape according to the tissue shape, so that continuous suction during surgery can be performed without obstructing the field of view of the microscope. Is possible.

The surgical suction tool according to the present invention is not limited to that of the above embodiment. For example, a core material for keeping the shape constant may be inserted into the hygroscopic material. This core material is
The material itself may be flexible, and for example, cotton thread, resin-based thread material, paper material and the like can be used. Of course, the material of the core material may be changed appropriately according to the surgical site. It should be noted that it is sufficient that the core material can stabilize its shape, and it does not matter whether or not it has hygroscopicity.

Further, when the coating resin film reaches deep inside the brain and is used, it is desirable to have a considerable flexibility.
However, the field of application of the suction device according to the present invention is not necessarily limited to brain surgery, and can be applied to other surgical operations such as dental surgery and visceral surgery. You may use excessively soft material. This is because, as long as it is flexible enough to be easily bent when pushed by hand, it is possible to perform continuous suction even in a general surgical operation as in the above-mentioned embodiment.

Further, in the above-mentioned embodiment, it was explained that the tip portion F of the hygroscopic material is exposed and body fluid or the like is sucked only from that portion. However, in actual surgery, bleeding is observed even at the midpoint reaching the deep affected area. It is not uncommon for body fluids to be required to be sucked in the middle part as well. Therefore, as shown in FIG. 3, a plurality of suction holes 40 may be provided in advance at appropriate locations on the coating resin film, and forced suction can be performed from those locations. Needless to say, these suction holes may be urgently opened with scissors at the discretion of the doctor.

The method of exposing the tip of the hygroscopic material is not particularly limited. For example, as shown in FIG. 4A, the cotton tip portion F may be located on the same plane without protruding from the resin film 14. According to this, it is possible to manufacture (or use) by cutting one long hygroscopic material into an appropriate length. Further, as shown in (b), it is possible to set various shapes such as a resin film in which only one side surface of the front end is cut off, or in which the resin film is obliquely cut as shown in (c).
In addition, the shape of the tip when the hygroscopic material is exposed is free.

[0026]

As described above, according to the surgical suction tool of the present invention, while the tip of the hygroscopic material covered with the flexible material reaches the deep affected area, it is covered with the airtight thin film material, so that it is vacuumed. It enables continuous suction of body fluids. Therefore, the body fluid can be continuously sucked at any deep portion, and the number of suction operations during surgery can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a surgical suction tool according to the present invention.

FIG. 2 is a perspective view showing another embodiment of the surgical suction device according to the present invention.

FIG. 3 is a perspective view showing a third embodiment of the surgical suction tool according to the present invention.

FIG. 4 is a diagram exemplifying a variation of protrusion of the moisture absorbent material according to the present invention.

[Explanation of symbols]

 10 Suction Tool 11 Hygroscopic Material 14 Resin Film 16 Flexible Tube 40 Suction Hole F Cotton Tip

Claims (1)

[Claims] 1. A surgical suction tool characterized in that the outer periphery of a flexible hygroscopic material is covered with an airtight flexible thin film material, and the tip of the hygroscopic material is exposed from the thin film material.