JP2005110905A - Handle of fine needle aspiration biopsy device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a handle of a fine needle aspiration biopsy device, which is capable of preventing an ovary from being pierced by mistake in puncture when sucking the content liquid of an ovarian cyst, for example, in an endoscopic surgical operation, and preventing a suction tube from falling out of the ovary. <P>SOLUTION: The handle of the fine needle aspiration biopsy device consists of an outer barrel for storing the suction tube with an inner needle at the distal end, and a handle part into which the outer barrel is inserted. The puncture suction device also has an outer barrel sliding means for sliding the outer barrel, a means for inflating or deflating a balloon set near the distal end of the suction tube, and an excess puncture preventive part disposed near the distal end of the suction tube for preventing the excessive puncture of the inner needle. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a handle unit for operating a puncture suction device for sucking an internal solution such as ovarian cyst in an endoscopic surgical operation.

  In recent years, endoscopic surgery has been widely performed. Endoscopic surgery is a method in which surgery is performed by remote operation while viewing images viewed from the endoscope on a screen. In the case of gynecological endoscopic surgery, an intravaginal approach is used in addition to an intraperitoneal approach. In cases of ovarian cysts, the intracystic solution is aspirated with a puncture needle or suction tube. Usually, a puncture needle is inserted while grasping the ovary with forceps or the like, or an incision is made in the ovary and suctioned with a suction tube.

  The conventional method of inserting a needle into a cyst and aspirating it may result in excessive insertion and may penetrate the cyst or puncture other organs. Further, since the puncture needle is not fixed to the cyst, the puncture needle may come off and the content liquid may leak out. Further, in the method in which a cyst is incised and sucked with a suction tube or the like, the internal solution may leak at the time of incision and suction.

As an improvement measure, Patent Document 1 proposes a method of sucking the content liquid leaked when the puncture needle is inserted from the route of the outer cylinder. In this case, the outer cylinder functions to prevent the needle from over-piercing, but the puncture needle does not have a mechanism to prevent the ovary from falling off, so the ovary can be easily removed from the distal end of the outer cylinder, and the contents can leak and be sucked. Sometimes there was no effect.
JP-A-4-224740

  The present invention provides a puncture suction device handle that does not accidentally penetrate the ovary at the time of puncture, and in addition, the suction tube does not fall out of the ovary when, for example, the content fluid of ovarian cyst is aspirated in endoscopic surgery. It is in.

The present invention
(1) A puncture and suction device comprising a suction tube with an inner needle attached to the distal end, an outer cylinder that houses the suction tube so as to be able to advance and retract, and a handle portion through which the outer cylinder is inserted so as to be able to advance and retract. A puncture suction apparatus handle comprising an outer cylinder slide means for allowing the outer cylinder to slide on the handle portion;

(2) It has an excessive penetration preventing part for preventing the internal needle from being excessively inserted in the vicinity of the distal end of the suction tube, and the excessive insertion is prevented by contacting the rear end of the handle part. The puncture suction device handle according to (1), which is prevented from entering,
(3) It has fixing means in the vicinity of the tip of the suction tube, the fixing means is at least one balloon, and the handle part has at least one means for expanding or contracting the balloon (1 ) Or puncture suction device handle according to (2),
(4) The puncture suction device handle according to (3), wherein the means is a female luer connector,
It is.

  According to the present invention, it is possible to prevent an accident that the needle is accidentally penetrated when a puncture needle for suction is inserted into the ovary, and to prevent the ovary from dropping from the punctured suction tube. It can be expected to reduce the operating time, and to return to the patient early, and to reduce medical costs.

  Hereinafter, the present invention will be specifically described with reference to the drawings. 1 and 2 are external views of a puncture and suction device according to an embodiment of the present invention. FIG. 3 shows a cross-sectional view of the handle portion. 4 to 7 are schematic views of the usage state of the present invention.

  FIG. 1 is an external view of an embodiment of the present invention, and the structure thereof is an inner needle (1), a suction tube (2) that is inserted into an organ at the same time with the inner needle (1) inserted, and suction. An outer cylinder (3) which is located on the outer periphery of the pipe (2) and in which the suction pipe (2) and the inner needle (1) can move, and a handle portion for switching the suction operation and moving the suction pipe (2) (4), a slide lever (5) for sliding the outer cylinder (3), an inner balloon (6) placed on the outer periphery of the suction tube (2) and placed inside the organ to fix the organ An outer balloon (7) that is placed on the outer circumference of the aspiration tube (2) and is placed outside the organ to fix the organ, and an excessive penetration prevention that is attached to the aspiration tube (2) to control the penetration length Part (8), inner balloon inflation / deflation tube (9) for inflating / deflating the inner balloon (6), outer balloon (7) Composed of the outer balloon inflation / deflation tube (10) for inflating / deflating the.

(Inner needle)
The inner needle (1) is usually produced by injection molding, extrusion molding or metal processing. The outer diameter of the inner needle (1) is preferably φ1 to φ8 mm. If the diameter is less than 1 mm, the suction efficiency of the highly viscous internal solution is poor, and if it exceeds 8 mm, it is too thick and difficult to insert. The total length is preferably 20-50 cm. This is because if it is less than 20 cm, it may not reach the organ, and if it exceeds 50 cm, the operability of the treatment tool will deteriorate. The inner needle (1) may be tubular, and the inner diameter in that case is preferably φ0.5 to φ7 mm. The needle tip of the inner needle (1) may be a sharp shape, and may be a shape such as a conical shape or an oblique cut. The material used for the inner needle (1) is usually a metal material such as stainless steel, but may be a hard synthetic resin such as a polycarbonate resin.

(Suction tube)
The suction pipe (2) is a conduit having a lumen, and is usually produced by injection molding, extrusion molding or metal processing. The inner diameter is formed to such an extent that it can be in close contact with the inner needle (1) without a step. The wall thickness is 0.1-2 mm. At the tip of the suction tube, an inner balloon (6) and an outer balloon (7) for fixing an organ are installed by a method such as adhesion, and the inner balloon (6) and the outer balloon (7) are inflated / deflated. There are cases where 3 lumens are added. At the cutting edge, a soft material may be formed by insert molding or the like so as not to damage the internal organs. The material used for the suction pipe (2) is usually a metal material such as stainless steel, but may be a hard synthetic resin such as polycarbonate resin. Further, it is desirable to use a flexible material such as natural rubber, silicone rubber, soft vinyl chloride resin, polyurethane resin, polyethylene resin, polypropylene resin, polyethylene terephthalate resin, etc. as the leading soft material.

(Outer cylinder)
The outer cylinder (3) is usually produced by injection molding or extrusion molding. The handle part (4) can be attached to the handle part (4) by attaching the handle or screwing so that the outer cylinder (3) can be slid by sliding the slide lever (5) in FIG. Alternatively, it may be attached by adhesion with a solvent or an adhesive, welding with ultrasonic waves or high frequency. The inner balloon inflation / deflation tube (9) and the outer balloon inflation / deflation tube (10) for inflating / deflating the inner balloon (6) and the outer balloon (7) in FIG. ) And the suction tube (2) may be provided with an outer cylinder slit. The outer cylinder (3) has an inner diameter of 3 to 14 mm and an outer diameter of 4 to 15 mm. If the inner diameter is less than 3 mm, the inner diameter of the suction pipe (2) for sucking the content liquid becomes smaller, the suction efficiency of the inner solution is poor, and the outer diameter is limited to the diameter of the trocar to be inserted. Before use, the length has a length that covers the inner needle (1) and the suction tube (2) to the tip, and by sliding the outer cylinder slide lever, the inner needle (1) and the suction tube (2) Can protrude from the tip of the outer cylinder (3). As a material used for the outer cylinder (3), a hard synthetic resin such as hard vinyl chloride resin, polycarbonate resin, and ABS resin, or a metal material such as stainless steel is used.

(Handle part)
The handle part (4) is usually produced by injection molding. The handle part (4) sucks the inner solution, injects / discharges physiological saline, and slide lever (5) for sliding the outer cylinder (3) and a slide lever for determining the moving range of the slide lever (5) Inner balloon inflation / deflation tube (9) for inflating / deflating the slit, inner balloon (6), outer balloon (7), outer balloon inflation / deflation tube (10) and inner balloon inflation / deflation port (11) ) Or an outer balloon inflation / deflation port (12). This port is preferably a female luer connector into which a syringe can be fitted, and more preferably a connector with a valve on which the injected product does not flow backward even if the syringe is removed. As a material used for the handle portion (4), a hard synthetic resin such as a hard vinyl chloride resin, a polycarbonate resin, or an ABS resin, or a metal material such as stainless steel is used.

(Slide lever)
The slide lever (5) is usually produced by injection molding. The slide lever (5) may be attached to the outer cylinder (3) by a detachable method such as fitting or screwing, bonding with a solvent or an adhesive, welding with ultrasonic waves or high frequency, or the like. As a material used for the slide lever (5), a hard synthetic resin such as hard vinyl chloride resin, polycarbonate resin or ABS resin, or a metal material such as stainless steel is used.

(Inner balloon, outer balloon)
The inner balloon (6) and the outer balloon (7) are fixing means for preventing organ drop-off, and the inner balloon (6) and the outer balloon (7) are extrusion molding, blow molding, compression molding, dipping, sheet welding, etc. It is formed by the method. The tip of the suction pipe (2) is installed by adhesion or welding. The width of the inner balloon (6) and the outer balloon (7) in the longitudinal direction is preferably 10 to 30 mm, and the expanded diameter is preferably φ5 to φ35 mm. Although the interval between the inner balloon (6) and the outer balloon (7) varies depending on the size, it is desirable that the inner balloon (6) and the outer balloon (7) are in close contact during inflation. As the material used, rubbers such as silicone rubber and natural rubber, and synthetic resins such as soft vinyl chloride resin, SEBS resin, and polyurethane are used. The outer diameter after mounting is limited to the inner diameter of the outer cylinder (3).

(Excessive penetration prevention part)
The excessive penetration prevention part (8) is formed by injection molding or compression molding and is attached to the inner needle (1) and suction tube (2) end as shown in FIGS. It is done. The puncture distance is restricted by the over-piercing prevention part (8) striking the rear end of the handle part (4) to prevent over-piercing. As the material for the over-stab prevention part (8), a hard synthetic resin such as hard vinyl chloride resin, polycarbonate resin or ABS resin, or a metal material such as stainless steel is used.

(Inner balloon inflation / deflation tube, outer balloon inflation / deflation tube)
The inner balloon inflation / deflation tube (9) and the outer balloon inflation / deflation tube (10) are gas and liquid injection / discharge routes for inflating / deflating the inner balloon (6) and the outer balloon (7). . The inner balloon inflation / deflation tube (9) and the outer balloon inflation / deflation tube (10) include an inner balloon (6) and an outer balloon (7) lumen for inflation / deflation attached to the suction pipe (2). Connected by a method such as adhesion or welding. The outer diameters of the inner balloon inflation / deflation tube (9) and the outer balloon inflation / deflation tube (10) are 0.5-5 mm. If it is less than 0.5 mm, a sufficient inner diameter for inflating the balloon cannot be secured, and if it is greater than 5 mm, it will not fit in the handle. As the material to be used, rubber-based materials such as silicone rubber and natural rubber that are appropriately deformed when the suction pipe (2) slides, and synthetic resins such as soft vinyl chloride resin, SEBS resin, and polyurethane are used.

(how to use)
Next, an actual method of using the puncture and suction device according to the present invention will be described with reference to FIGS. 4 to 7 to clarify the effects of the present invention.

  As shown in FIG. 4, the slide lever (5) is slid forward, and the inner needle (1) and the suction tube (2) are inserted into the abdominal cavity through the trocar while being housed inside the outer cylinder (3). Press the tip of the outer tube (3) against the ovary. As shown in Fig. 5, with the tip pressed against the ovary, insert the inner needle (1) and suction tube (2) until the over-stab prevention part (8) hits the rear end of the handle part (4). Gradually insert into the ovarian cyst. Since the puncture depth is controlled by the excessive puncture prevention unit (8), the ovarian cyst cannot be accidentally penetrated.

  Here, as shown in FIG. 6, in order to fix the suction tube (2) to the ovarian cyst, the inner balloon (6) is inflated to fix the ovarian cyst from the inside. Subsequently, as shown in FIG. 7, the slide lever (5) is slid backward to expose the outer balloon (7) from the outer cylinder (3), the outer balloon (7) is inflated, and the ovarian cyst is fixed from the outside. To do. Since the suction tube (2) is fixed to the ovarian cyst by the inner balloon (6) and the outer balloon (7), the suction tube (2) does not easily fall off, and leakage of the content liquid can be suppressed. The inner needle (1) is removed and connected to a suction tube to suck the content liquid.

  According to the present invention, it is possible to prevent accidental penetration when inserting a puncture needle for suction into the ovary, to prevent the ovary from falling off the suction tube, and to reduce the stress on the operator and shorten the operation time. As a result, patients can be expected to return to society quickly and reduce medical expenses.

It is an external view of the puncture suction device handle which becomes one Example of this invention. It is an external view of the puncture suction device handle which becomes one Example of this invention. It is a handle part expanded sectional view of the puncture suction device handle which becomes one Example of this invention. It is the schematic which shows the use condition of the puncture suction device which becomes one Example of this invention. It is the schematic which shows the use condition of the puncture suction device which becomes one Example of this invention. It is the schematic which shows the use condition of the puncture suction device which becomes one Example of this invention. It is the schematic which shows the use condition of the puncture suction device which becomes one Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Inner needle 2 Suction tube 3 Outer cylinder 4 Handle part 5 Slide lever 6 Inner balloon 7 Outer balloon 8 Over-stab prevention part 9 Inner balloon inflation / deflation tube 10 Outer balloon inflation / deflation tube 11 Inner balloon inflation / deflation Port 12 External balloon inflation / deflation port

Claims (4)

A puncture and suction device comprising a suction tube having an inner needle attached to a distal end portion, an outer cylinder that accommodates the suction tube so as to advance and retreat, and a handle portion through which the outer cylinder is inserted and retracted. A puncture suction apparatus handle comprising an outer cylinder slide means for allowing the outer cylinder to slide on the handle portion. In the vicinity of the distal end portion of the suction tube, there is an over-piercing prevention portion for preventing the inner needle from over-piercing, and the over-piercing prevention portion is brought into contact with the rear end of the handle portion to prevent over-piercing. The puncture suction device handle according to claim 1, wherein 3. A fixing means is provided in the vicinity of the distal end portion of the suction tube, the fixing means is at least one balloon, and the handle portion has at least one means for expanding or contracting the balloon. A puncture suction device handle according to claim 1. The puncture suction device handle according to claim 3, wherein the means for expanding or contracting the balloon is a female luer connector.

Images