JPH0588552U - Medical peeling suction beak tube - Google Patents

Abstract

(57) [Summary] [Structure] A grip 3 having a pressure adjusting hole 6, a pipe 1 connected to the front side thereof and having a tip 2 for suction attached to the tip thereof, and a connector 5 for connecting a tube connected to the rear side thereof. In addition to forming a passage for suction and drainage that communicates with the connector from the tip of the pipe to the connector through the pipe, the tip is formed of a porous member. [Effect] In laparoscopic surgery performed through a trocar, the number of times of exchanging members such as tips can be reduced, and blunt dissection can be performed safely, reliably and easily.
In addition, exuded body fluid or cleaning fluid from living tissue can be sucked and discharged as needed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a medical detaching suction beak tube that sucks and drains body fluid that exudes during blunt dissection of biological tissue or during surgery.

[0002]

[Prior Art]

 During surgery, the skin, muscles, fat layer, so-called connective tissues and organs are incised and peeled off, and the surgical field is expanded to the target site. These tissues contain vulnerable blood vessels and tubular organs, which can cause bleeding and infection if they are damaged by incision or detachment, leading to serious consequences. Therefore, the surgeon repeats the operation while paying close attention, and the instruments and devices used are constantly being creatively devised.

For example, in addition to sharp incision and peeling with a knife such as scissors or a scalpel, an ultrasonic suction device for crushing and aspirating only the connective tissue surrounding the tubular organ such as a blood vessel is left without damage. There are electric scalpels and laser scalpels that use electrical and optical energy to burn and incise connective tissue while enclosing tubular organs. On the other hand, blunt dissection in which only the connective tissue is torn at the tip of the operator's fingertip or a treatment tool such as forceps is also an important technique that has been used for a long time. In this case, the surgeon delicately adjusts the force while feeling the resistance of the tissue. The tool to be used is safer than your most sensitive and flexible fingertip, the tip of a treatment tool with a rounded tip, absorbent cotton, or a cotton ball of gauze. It is convenient to use a cotton ball or the like, and since cotton balls and the like can absorb exudate and washing liquid from the exfoliated tissue at the same time, they are used alone or by grasping them with forceps.

In recent years, with the development of laparoscope, laparoscopic surgical procedures typified by laparoscopic cholecystectomy have been expanding their application mainly to abdominal diseases. Here, since almost all procedures are performed through the trocar provided on the abdominal wall, various restrictions are generated as compared with the conventional open surgery, and the inner diameter of the trocar is 5 to 5 mm so that the trocar can be inserted and operated. The equipment used has been devised so that the diameter is reduced to 15 mm and the operation support section is lengthened.

However, the above-described device for performing blunt dissection is generally used mainly for forceps in terms of the dissection, incision, and gripping functions, but when a cotton ball is required, Under the present circumstances, it is necessary to use the above-mentioned grasping forceps to frequently move the cotton ball into and out of the trocar.

[0006] On the other hand, an Endoscopic Kittner (OR Concepts (USA); Surgical Laparoscopy & Endoscopy, Vol 1, No 3, p207-208 (1991)) provided to the operator as a more convenient one. Has been done. It has a structure in which a cotton cloth is wrapped around the tapered portion of a lightweight metal pipe and fixed by caulking, and it can be inserted into the trawl with an outer diameter of about 5 mm. Since the feel of cotton cloth is similar to that of cotton balls used in the past, it has been well-received because it makes it easy to exfoliate and expose the gallbladder duct and blood vessels in the triangular part of Carrot. However, since there is no hard member to support the inside of the cotton cloth from the inside, it is easy to buckle, and the cotton cloth is likely to swell due to exudate, and when the cotton cloth is clogged, it must be taken out and replaced. There are still some issues to be improved.

[0007]

[Problems to be solved by the device]

 The present invention has been made as a result of various studies in order to solve such a problem of the conventional blunt dissection tool, and its purpose is to perform a basic surgical operation even under the constraints of laparoscopic surgery. A medical peeling suction device that allows the operator to perform safe, reliable, and easy blunt dissection of biological tissue, and to relieve the operator from the complexity of frequently changing cotton balls etc. To provide.

[0008]

[Means for Solving the Problems]

 That is, according to the present invention, a grip portion having a side hole for adjusting pressure, an insertion portion formed of a hollow member connected to the front side of the grip portion and having a suction tip attached to the front end, and connected to the rear side of the grip portion. And a tube connecting member to form a gas-liquid flow passage that communicates with the tube connecting member from the distal end of the insertion portion to the tube connecting member, and the suction tip is formed of a porous member. It is a peeling suction beak tube for medical use characterized by being used.

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. FIG. 1 is a schematic view of a medical exfoliation and suction beak tube according to an embodiment of the present invention, FIG. 2 is an enlarged view of a distal end portion thereof, and FIG. 3 is a sectional view of a distal end portion thereof.

The medical stripping and suction beak tube according to the present invention is a connector provided with a pipe (1) having a tip (2) connected to a tip thereof, a handle (3) having a pressure adjusting hole (6), and a cock (4). -It is composed of part (5).

The pipe (1), which is a hollow member serving as an insertion portion, is inserted into a body cavity through a trocar during an operation, transmits an operation from outside the body of the operator to the tip (2) at the distal end, and has a flow path inside. Hold (8) to suck and discharge body fluids and cleaning fluids. Therefore, it is preferable to have bending rigidity, light weight, and thin thickness. Examples of the material used include stainless steel, titanium alloy, duralumin, and resistance aluminum steel, and the thickness is 0.1 to 2 mm. For stainless steel, 0.5 mm is appropriate. An outer diameter of 4.85 to 5.0 mm is preferable because the inner diameter of a trocar currently used as a treatment trocar is 5 mm, but an outer diameter of 3 to 20 mm is preferable depending on the application. Diameter is assumed. In addition, if it is desired to make the tip part thinner by increasing the adaptation of the procedure, the tip part may be tapered or stepped toward the tip in multiple regions. In this case, With metal materials, a desired shape can be obtained by drawing, drawing, or connecting multiple parts. In addition, if elasticity or flexibility is required for the pipe (1) according to the operator's preference, a relatively hard resin material can be used. There are resins, ABS resins, polycarbonate resins and the like, and it is possible to form a composite with the above-mentioned metal material.

Further, 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, but in the case of laparoscopic cholecystectomy 20 to 50 cm is suitable. Furthermore, in order to more reliably transmit the operation of the operator, a surface state with low frictional resistance is required at the contact portion with the inner surface of the trocar, which causes frictional resistance during forward / backward or rotational movement, and is subjected to polishing smoothing. Alternatively, it is preferable to apply a lubricating coating of fluororesin, silicone resin or the like. In addition, it is preferable that the surface be matte or have a dark color in order to reduce reflection that obstructs the visual field during illumination from the laparoscope during operation.

The tip (2) at the tip of the pipe (1) is made of a porous material having continuous pores, and its shape is, for example, a cylindrical type (A) or a wedge type (B) as shown in FIG. , A taper type (C), a spherical type (D), or the like, or a shape similar to these can be selected, and is selected by an operator depending on the purpose of use and the ease of operation. The outer diameter of the pipe (1) generally matches the maximum diameter of the pipe (1) because the maximum size that can be inserted into the trocar is basically the upper limit. It is necessary to consider that no sharp step is formed on the outer surface of the connecting part. In addition, it must have a rounded shape without any protrusions that may sharply damage living tissues.

Examples of the material used include resins such as polyethylene resin, polypropylene resin, vinyl chloride resin, fine particles of metal such as stainless steel or ceramics, fibers, spheres, etc. Bond a sintered body, open-celled foam or non-woven fabric or fabric such as cotton, silk, polyester fiber, nylon fiber, etc. with a suitable binder so as not to swell with the body fluid or cleaning liquid beyond the maximum diameter of the pipe (1). Or, a fiber processed product processed into a roll is used. The properties required for the porous material tip (2) are such that the living tissue is not sharply damaged, but it produces a friction resistance that does not slip when the operator moves the tissue while pressing it against the living tissue, and When a suction pressure of several tens to several hundreds of mmHg is applied by a suction source on site, through the tip (2), micropores that can suck gas such as carbon dioxide gas and body fluid such as blood fluid or washing solution to the flow passage (8) side. It can be mentioned that the holes are open. Preferably, fine pores having a pore diameter of 1 to 300 μm are preferably opened over the entire area of the chip (2).

Further, the cross-sectional shape of the tip (2) can take various shapes. FIG. 3 shows a state in which the rear end of the tip (2) is inserted and connected to the inner hole of the tip of the pipe (1). Although shown, it is also possible to select a connected state in which the tip of the pipe (1) penetrates into the rear end of the tip (2). Basically, as shown in FIG. 3 (A), the tip (2) is formed of a homogeneous porous body, but considering its hardness, shape, elasticity, or the difficulty of the molding method, A space may be included locally. For example, in the shape of FIG. 3 (B), the surface hardness of the tip (2) is large, but the cross-sectional area is small on the rear end side, and a flexible bend can be obtained with respect to the central axis of the pipe (1). Further, even if a tissue piece mixed with aspirating liquid such as blood or irrigation liquid clogs the micropores of the tip (2), the cavity (9) is provided so that the flow passage (8) is provided. Since the surface area of the porous body is large, the clogging can be reduced. Also, when connecting the pipe (1) and the chip (2) with an adhesive such as epoxy or urethane, there is a risk that the suction passage will be blocked by the adhesive impregnated in the fine holes of the chip (2). There is a processing advantage that it has little property.

Further, in the example of FIG. 3 (C), the cavity (9) of (B) extends further to the tip to form a through hole (10). In addition to the effect similar to the example of (B), when the medical peeling suction beak tube according to the present invention is used as a cleaning liquid suction / discharge beak tube, it has a structure capable of sucking through the through hole (10). In this case, in order to maintain the buckling strength of the tip (2), it is possible to insert a reinforcing material such as a thin stainless pipe into the through hole (10) for molding.

The outer diameter of the tip (2) is substantially the same as the maximum diameter of the pipe (1), and the cavity (9) and the penetrating hole provided inside the tip as shown in FIGS. 3 (B) and 3 (C). The inner diameter of the hole (10) is preferably 20 to 70% of the outer diameter of the tip (2).

The handle (3) which is a grip portion and the connector (5) which is a tube connecting member are connected to each other by extending the flow passage (8) to the rear end side of the pipe (1) and opening at a terminal. A cock (4) is provided between the handle (3) and the connector (5) for opening and closing the gas passage in the flow passage. Each member may be an adhesive combination of individual parts, or may be an integrally molded product having parts satisfying each function.

The handle (3) is generally shaped so that the operator can comfortably grasp it in the hand and easily open and close the pressure adjusting hole (6) opened on the side surface of the flow passage with the thumb or the index finger. Is desired. For example, it is a rod shape with an outer diameter of 5 to 20 mm and a length of 50 to 150 mm, and the opening surface of the pressure adjusting hole (6) is at a position retracted 10 to 50 mm from the tip of the handle (3) and has a spherical shape from the surface. Form a depression (7) with a depth of 0.5-3 mm, and have an area equal to or larger than a round hole with an inner diameter of 1 mm at the bottom and an approximately triangular pressure adjustment hole (6) that is tapered at the tip side. It is preferred that the operator make fine adjustments with his fingertips.

The connector (5) is for connecting a resin or rubber tube for suction and drainage to the rear end side of the grip portion, and is generally used in the medical field. It is preferable that the pipe has a length of 10 to 30 mm and an outer diameter of 5 to 20 mm, and is provided with a bamboo rib-shaped circumferential rib near the rear end or has a tapered shape.

The cock (4) is provided as a part of the handle (3) or the connector (5) as shown in FIG. 1, or is interposed between the handle (3) and the connector (5), and The operator operates the knob with his fingertips to rotate the rotor, thereby opening and closing the flow path for suction and drainage of body fluid and cleaning fluid. Usual two-way cocks that have been used in the medical field can be used, but even if a connector (5) is attached to the suction source that comes in contact with the suction source, a pinch-cock type opening / closing part is attached. There is nothing wrong with it. It should be noted that the cock (4) is not always necessary as long as the actual condition of the medical site is such that the pressure control of the suction source can be finely controlled and the assistant can act on his behalf.

Materials used for the handle (3), the cock (4) and the connector (5) include, for example, ABS resin, hard vinyl chloride resin, polysulfone resin, polystyrene resin, polyacetal resin, etc. Those that can be easily manufactured by cutting or cutting are selected. In addition, cutting products made of metallic materials such as stainless steel, carbon steel, aluminum alloy, and brass can be used, but care must be taken not to burden the operator with delicate operations.

Further, it is preferable that the flow passage provided in communication with each of these members has a diameter larger than that of the flow passage (8) of the pipe (1) for the purpose of preventing clogging, and the flow passage is further stepped in the flow direction. It is not appropriate that there be a difference internal protrusion.

[0024]

[Action]

 The medical exfoliation suction beak tube of the present invention has a dimensional conformability and a smooth surface that does not cause a resistance to the trocar when it is inserted into the abdominal cavity through the trocar and advanced toward the affected area. The lengthy and rigid pipe (1) can accurately transfer the delicate movement of the surgeon's grasping operation outside the body and the peeling force to the tip (2) in contact with the peeling surface, and also the resistance force of the living tissue. Communicated to the person.

The grip (3) has an outer diameter that is easier for the operator to grip and operate than the outer diameter of the pipe (1) which is restricted by the diameter of the trocar, and can be rotated with a small torque, and fatigue of the hands and fingers. Enables reliable operation with reduced feeling. The tip (2) is a member that comes into direct contact with living tissue, but the roundness that does not sharply damage the tissue, the shape suitable for various affected area conditions, and the porous material with fine irregularities on the non-slip surface are applicable. The blunt dissection can be performed while safely and accurately grasping the tissue.

Further, since the gas / liquid can be sucked and discharged from the handle (3) outside the body through the porous micropores of the tip (2), the body fluid bleeding or exuding from the exfoliated tissue can be easily removed. The liquid in this area is less likely to damage the surgical field in the affected area. It can also be used for sucking and discharging the cleaning liquid. By operating the cock (4) connected to the handle (3), it is possible to easily open and close the suction pressure connected to the connector (5) easily, and further to adjust the pressure adjusting hole () of the handle (3). By opening and closing 6) with the fingertips, the operator can adjust the optimum suction pressure according to the condition of the surgical field.

[0027]

[Effect of the device]

 As described above, when the medical dissection suction beak tube of the present invention is used, the blunt dissection operation through the trocar can be performed safely and securely with less sharp damage to the living tissue and less operator operation loss. Moreover, since blood and body fluid can be sucked and discharged through the tip of the tip, the operator can be freed from the trouble of frequently changing the treatment tool, and it is useful as a dissection tube for laparoscopic surgery.

[Brief description of drawings]

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

FIG. 2 is an enlarged view of a tip portion of FIG.

FIG. 3 is a cross-sectional view of the tip portion of FIG.

[Explanation of symbols]

 1 Pipe 2 Tip 3 Handle 4 Cock 5 Connector 6 Pressure Control Hole 7 Recess 8 Flow Path 9 Cavity 10 Through Hole

Claims (1)

[Scope of utility model registration request] 1. A gripping part having a side hole for adjusting pressure, an insertion part made of a hollow member connected to the front side of the gripping part and having a suction tip attached to the tip, and connected to the rear side of the gripping part. It is composed of a tube connecting member, forms a gas-liquid flow passage that communicates with the tube connecting member from the distal end of the insertion portion through the gripping portion, and the suction tip is formed of a porous member. Characteristic medical peeling suction beak tube.