JP3265452B2 - Medical peeling suction beak tube - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tip used for a medical exfoliation suction beak for performing blunt dissection of a living tissue during an operation, and aspirating and excreting a body fluid and an irrigation solution exuding during an operation. And further enhances the peeling performance of the living tissue.

[0002]

2. Description of the Related Art Surgery is performed while incising and exfoliating skin, muscles, fat layers, so-called connective tissues and organs, and expanding an operation field to a target site. These tissues contain vulnerable blood vessels and tubular organs,
Injury from detachment can cause bleeding and infection, leading to serious consequences. Therefore, the surgeon repeats the operation while paying close attention, and the ingenuity and ingenuity have been evolved with the tools and devices used.

[0003] For example, in addition to sharp incision and exfoliation with a blade such as scissors and a scalpel, an ultrasonic suction device for crushing and sucking only surrounding connective tissue while leaving tubular organs such as blood vessels intact, There are electric scalpels and laser scalpels that use optical energy to bake and incise connective tissue while containing tubular organs. On the other hand, blunt dissection, which tears only connective tissue at the tip of a treatment tool such as a fingertip of an operator or a forceps, is also an important technique that has been commonly used since ancient times. In this case, the surgeon adjusts the delicate force while feeling the resistance of the tissue. The equipment to use is also the most sensitive and flexible fingertips,
A treatment tool tip with a rounded tip or a safer one, such as cotton wool or gauze cotton balls, is selected.However, easy-to-operate forceps are convenient for fine parts, and cotton balls etc. exude from exfoliated tissue. Since a liquid or a cleaning liquid can be absorbed at the same time, it is used alone or by holding it with forceps.

[0004] In recent years, with the development of laparoscopic surgery, laparoscopic surgical operations represented by laparoscopic cholecystectomy have been mainly applied to abdominal diseases. Here, since almost all procedures are performed through the trocar provided on the abdominal wall, there are various restrictions as compared with the conventional laparotomy, and the trocar inner diameter is 5 to 1 so that the trocar can be inserted and operated.
The members used have been devised to reduce the diameter to 5 mm and lengthen the operation instruction section.

[0005] However, the above-mentioned device for performing blunt peeling has been widely used mainly for forceps in terms of peeling, incision, and gripping functions. At present, it is required to use a grasping forceps to make a cotton ball frequently come in and out of a trocar.

[0006] On the other hand, as those which can be more easily used,
Endoscopic Kittner (OR Concepts (USA); Surgica
l Laparoscopy & Endoscopy, Vol1, No.3, P.207-208 (1
991)) is provided to the surgeon. It has a structure in which a cotton cloth is wound around a tapered portion of a lightweight metal pipe and fixed by caulking, and can be inserted into a trocar with an outer diameter of about 5 mm. The cotton cloth is similar to the cotton ball used in the past, so it is very popular because it can easily exfoliate and expose the gallbladder duct and blood vessels in the triangle of Carrot. However, there is no hard member to support from the inside at the forefront of the cotton cloth, so it tends to buckle, and the cotton cloth easily swells with exudate.Furthermore, when the cotton cloth is clogged, it must be taken out and replaced. There are still issues to be improved.

In Japanese Utility Model Application Laid-Open No. 5-88552, the structure and structure of a medical peeling suction beak for solving these problems are described. However, there is still a problem that the peeling performance is low due to insufficient surface roughness. That is, in the case of the chip surface shape in which the ratio of the minimum diameter to the adjacent maximum diameter is more than 99% in the cylindrical shape according to the conventional technique, by using a porous material, the fine pores having an appropriate pore diameter of 1 to 300 μm are used. The hole was opened and an effective suction performance was obtained, but on the other hand, the surface was smooth and less caught, so that an effective peeling performance was not obtained.

[0008]

SUMMARY OF THE INVENTION The present invention has been made as a result of various studies in order to solve such a problem of the tip used in the conventional medical peeling suction beak tube. Has been studied to obtain effective peeling performance by changing the surface shape, and a medical device equipped with a tip that allows the operator to perform blunt peeling of living tissue more safely, reliably and easily To provide a peeling suction beak tube for use.

[0009]

That is, the present invention comprises a hollow member provided with a suction tip at the tip, a handle provided behind the hollow member, a cock, and a connector, and the tip is provided with respect to a central axis. Has a maximum diameter and a minimum diameter adjacent to each other,
The medical treatment characterized in that the number of the maximum diameter and the minimum diameter is at least two each, or that the tip has a saw-tooth outer shape in the axial direction or radially with respect to the central axis and has pores. It is a peeling suction beak tube for use.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on illustrated embodiments. FIG. 1 is a schematic view of a medical peeling suction beak tube according to one embodiment of the present invention, FIG. 2 is an enlarged view of a distal end portion, FIG. 3 is a sectional view of a distal end portion, and FIG. It is.

The medical peeling suction beak tube according to the present invention comprises a pipe (1) having a tip (2) connected to a tip, a handle (3),
And a connector (5) provided with a cock (4).

A pipe (1) which is a hollow member serving as an insertion portion.
Is inserted into the body cavity through the trocar during the operation, and transmits the operation from outside the body of the operator to the tip (2) at the tip, and has a flow passage (8) inside, and aspirates the body fluid and washing fluid.
Discharge. Therefore, it is preferable that the material has bending rigidity, and is lightweight and thin. Examples of the material used include stainless steel, titanium alloy, duralumin, drag aluminum steel, and the like. In the case of, 0.5 mm is appropriate. The outer diameter is preferably 4.85 to 5.0 mm because the inner diameter of the trocar currently generally used as a treatment trocar is 5 mm, but an outer diameter of 3 to 20 mm is assumed depending on the application. Is done. Furthermore, if the pipe (1) is required to have elasticity and flexibility according to the surgeon's preference, a relatively hard resin material can be used. For example, nylon resin, ABS resin, polycarbonate resin, etc.
It is also possible to form a composite with the above-mentioned metal material.

[0013] The total length of the pipe (1) is selected in consideration of the distance between the affected part and the body surface and the operation length including the handle (3) described later. In the case of laparoscopic cholecystectomy, 20-50
cm is appropriate. Also, the surface is preferably matted or dark colored to reduce reflections that interfere with the field of view during illumination from the laparoscope during surgery.

The tip (2) at the tip of the pipe (1) is made of a porous material having continuous pores, and has a surface shape such as a vertical stripe type (A) and a horizontal stripe type as shown in FIG. (B), screw type (C), roughening type (D), knurled type (E), etc., and the external shape is cylindrical type (A), spherical type (F), tapered type (G), wedge A mold (H) or the like or a shape similar to these can be selected, and is selected by the surgeon according to the purpose of use and ease of operation. Regarding the surface shape, it is desirable that the particles protrude from the surface as shown in FIG. 4 (A). However, in actuality, when the molded product is molded by a mold, the particles up to the vicinity of the surface are appropriately formed as shown in FIG. 4 (B). Although the surface of the mold has pores, the surface shape of the mold itself is transferred to the surface particles, and the particles become flat. At this time, the pores themselves are obtained also on the surface, but since the surface is flat, it is hard to cause appropriate catching.

In order to solve this problem, in the present invention, for example, FIG.
A chip having a surface composed of serrated peaks and valleys as shown in FIG. According to this, it is characterized in that it has a maximum diameter and a minimum diameter adjacent to the central axis, and the number of the maximum diameter and the minimum diameter is at least two or more in each case, and has pores. In this case, the surface of the die is transferred to the surface of the mold itself and becomes a flat plate. However, since the surface itself has appropriate unevenness, an appropriate hooking occurs, thereby improving the peeling performance. The angles of the peaks and valleys are not particularly limited, but are preferably at least 60 degrees in order to maintain the bonding force between the particles. In many cases, the trocars for treatment are those having an inner diameter of 5 mm and 10 mm, whereas the maximum outer diameters are 5 mm and 10 mm, and the minimum outer diameters are 4.5 mm to 4.95 mm and 9.0 mm, respectively.
~ 9.9 mm is appropriate.

The material used is, for example, a resin such as a polyethylene resin, a polypropylene resin, or a vinyl chloride resin; a metal such as stainless steel; or fine particles such as ceramics; Bonded, open-celled foam or non-woven fabric or woven fabric such as cotton, silk, polyester fiber, nylon fiber, etc. with a suitable binder so as not to swell with a bodily fluid or a washing liquid beyond the maximum diameter of the pipe (1), or A processed fiber product processed into a roll is used.
The property required for the tip (2) of the porous material is that it does not sharply damage the living tissue, but produces frictional resistance that does not slip when the operator moves while pressing against the living tissue,
In addition, when a suction pressure of several tens to several hundreds of mmHg is applied by a suction source at a medical site, a gas such as carbon dioxide gas, a body fluid such as blood, and a cleaning fluid can be sucked into the flow passage (8) through the tip (2). The hole is open. Preferably, the hole diameter is 1 to 300 μm over the entire area of the chip (2).
It is desirable that the micropores are opened. The material is 1
Assuming one-time use, a resin material is desirable from the viewpoint of cost.

The cross section of the chip (2) can take various shapes, and in particular, as shown in FIG.
0) is desirable. In addition, as shown in FIG. 3B, a reinforcing material such as a thin stainless steel holding pipe (11) is inserted into the through hole in order to maintain the buckling strength of the chip (2). ), It is also conceivable that the reinforcing material is extended and a sleeve (12) for bonding and fixing is built in. In these cases, if a side hole is opened in the side surface of the holding pipe, it is needless to say that suction can be performed from the side surface of the chip.

[0018]

The tip of the medical peeling and suctioning beak according to the present invention can obtain an effective peeling performance by changing the surface shape, so that the operator can safely remove the blunt body tissue. Can be performed reliably and easily.

[Brief description of the drawings]

FIG. 1 is an external view of a medical peeling suction beak tube according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a tip.

FIG. 3 is a sectional view of a distal end portion.

FIG. 4 is a sectional view of a particle shape of a chip.

[Explanation of symbols]

 1. Pipe 2. Tip 3. Handle 4 Cook 5. Connector 8. Flow passage 10. Through hole 11. Holding pipe 12. Fixed sleeve

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) A61M 1/00 A61M 25/00-27/00

Claims (3)

(57) [Claims] 1. A hollow member having attached the tip having pores for sucking the tip, the handle was attached to the rear of the hollow member, cock, medical peeling yankauer that consists in the connector contact
There are, the chip has a very small diameter with adjacent local maximum diameter with respect to the central axis, medical peeling yankauer the number of local maximum diameter and a micro diameter which is characterized in that there are at least each two or more places. 2. A hollow member having attached the tip having pores for sucking the tip, the handle was attached to the rear of the hollow member, cock, medical peeling yankauer that consists in the connector contact
There are, medical peeling yankauer, characterized in that the chip has a serrated outer contour axially or radially relative to the central axis. 3. The ratio of the length of the very small diameter excluding the end portion to the very large diameter of the tip is 80 to 99%.
The medical peeling suction beak according to the above.