RU148055U1 - PUNCH NEEDLE FOR CARRYING INTRACLASTIC COAGULATION - Google Patents

Abstract

A puncture needle for intracavitary coagulation, containing two hollow metal tubes, the main and additional, with pointed working ends and cannulas at opposite ends, the main hollow metal tube contains a mandrin, characterized in that the additional hollow metal tube has a diameter equal to the lumen width of the main hollow a metal tube and is inserted into the main hollow metal tube at an angle, and both cannulas are made with plugs.

Description

The utility model relates to medicine, namely to surgical treatment tools for puncture needles for aspiration of pathological fluid for subsequent cytological examination with the possibility of intracavitary local anesthesia and laser irradiation of the pathological formation.

A known puncture fiber optic needle (see RF patent for utility model No. 94840 IPC A61B 17/34, dated February 24, 2010), consisting of a tubular shaft and a shank at the proximal end, provided with a mark made in the form of a groove or bulge, is tubular the needle shaft is made of a material with the effect of shape memory, and the shank is additionally equipped with a fitting, the longitudinal axis of which is an acute angle with the longitudinal axis of the tubular needle shaft, for supplying a cooling solution.

A disadvantage of the known solution is the lack of mandrel in the working part of the needle when passing through soft tissues, which leads to their penetration into the lumen and further difficulty in conducting the fiber for laser irradiation. The known puncture fiber optic needle does not allow simultaneous aspiration of the pathological fluid for cytological examination and intracavitary laser obliteration of cystic neoplasms.

A known puncture fiber optic needle (see RF patent for utility model No. 58904 IPC A61B 17/34, July 13, 2006), made in the form of a tubular rod with a straight longitudinal axis, equipped with a shank on the proximal part and bent at an acute angle to the longitudinal axis of the distal part, the end of which is cut at an acute angle to the longitudinal axis of the distal part, the bending radius between the proximal and distal parts is at least twenty diameters of the optical fiber used.

A disadvantage of the known puncture light guide needle is that the needle, previously bent from the longitudinal axis along the radius, when advancing in the patient’s body, leads to additional soft tissue trauma during surgery. The known puncture fiber optic needle does not allow simultaneous aspiration of the pathological fluid for cytological examination and intracavitary laser obliteration of cystic neoplasms.

The closest in technical essence to the claimed technical solution is a puncture needle (see patent for utility model No. 39479, IPC A61B 17/34, dated 05.04.2004) containing a hollow metal tube with a pointed working end and a cannula on its opposite the end, further comprises an inner metal hollow tube with a pointed working end, a cannula at the opposite end and a mandrel, the diameter of the inner hollow metal tube being less than the diameter of the outer and the length greater than the length of the outer.

A disadvantage of the known puncture needle is that it does not allow simultaneous aspiration of the pathological fluid for cytological examination and intracavitary laser obliteration of cystic neoplasms.

The objective of the proposed technical solution is to provide the possibility of aspiration of fluid for cytological examination, local intracavitary anesthesia and laser irradiation of cystic neoplasms with one puncture of the tissue, adequately positioning the working end of the fiber in the cavity of the cyst, while providing the ability to adjust the distance between the walls of the cyst.

The problem is solved due to the fact that the puncture needle for intracavitary coagulation contains two hollow metal tubes, the main and additional, with pointed working ends and cannulas at opposite ends, the main hollow metal tube contains a mandrin,

additional hollow metal tube has a diameter equal to the lumen width of the main hollow metal tube and is inserted into the main hollow metal tube at an angle, and both cannulas are made with plugs.

The implementation of the puncture needle in the form of a main hollow metal tube with an additional hollow metal tube, that is, in the form of a double-lumen tube, allows simultaneous introduction of local anesthetics into the lumen of the cyst and laser intracavitary irradiation without the use of additional needles, thus reducing the time and trauma of the procedure .

The connection of the additional hollow metal tube at an angle with the main hollow metal tube allows the syringe to be attached directly or through a system of tubes for suction, so that this will not interfere with the puncture of the main metal tube.

The execution of cannulas with plugs allows you to perform a puncture of the cyst and the subsequent introduction of the fiber without a sharp change in intracystic pressure, that is, while maintaining a clear visualization of the cavity and walls of the formation.

Performing the main hollow metal tube equipped with a mandrin allows puncture of the cavity neoplasm without fear of getting track blood and parts of soft tissues getting into the tube’s lumen, keeping the aspirated liquid free of blood impurities, and the tube’s lumen for subsequent unhindered fiber passage.

Performing an additional hollow metal tube with a diameter equal to the lumen width of the main hollow metal tube allows for aspiration of cystic contents of any viscosity.

In FIG. 1 shows a puncture needle for intracavitary coagulation. In FIG. 2 shows a view of section A.

On which includes:

1 - the main hollow metal tube,

2 - additional hollow metal tube,

3 - adapter,

4 - cannula of the main hollow metal tube,

5 - cannula of an additional hollow metal tube,

6 - cannula plug with the mandrel of the main hollow metal tube,

7 - plug the cannula of an additional hollow metal tube,

8 - mandrin.

The main hollow metal tube (1) and the additional hollow metal tube (2) are pointed at the working ends and containing cannulas, respectively (4) and (5) at the opposite ends with plugs, respectively (6) and (7). The plug (6) is rigidly connected to the mandrel 8. Moreover, the diameter of the main hollow metal tube (1) corresponds to the width of the lumen of the additional hollow metal tube (2).

The length of the main hollow metal tube (1) is 200 mm longer than the length of the additional (2). The main hollow metal tube (1) contains a mandrin (8), the length of which corresponds to the length of the main hollow metal tube (1). An additional hollow metal tube (2) is inserted into the main hollow metal tube (1) at an angle through the adapter (3).

A puncture needle for intracavitary coagulation works as follows.

First, the plug (7) is removed from the cannula (5) on an additional hollow metal tube (2) and a disposable syringe of the Luer type is fixed in its place (not shown in the figure). The main hollow metal tube (1) with a pointed end with mandrin (8) is inserted into the intracystic cavity under ultrasound guidance. After that, the mandrin (8) is removed and the plug (7) is put on the cannula (4) of the main metal tube (1) and the material is taken by aspiration of the tissues due to the negative pressure created by the syringe. Then, the syringe with the aspirated pathological fluid is removed and replaced with an identical, pre-filled with local anesthetic. The next step is to press the syringe plunger to inject the required amount of local anesthetic into the cyst cavity. Through the main hollow metal tube (1), after removing the plug (7), a surgical laser with a diameter of 600 μm is inserted instead of the mandrin. If necessary, an additional volume of anesthetic is introduced or removed from the cyst cavity using a syringe fixed to the cannula of an additional metal tube (2). The necessary laser irradiation of the cyst cavity is performed. At the end of the medical intervention, the main hollow metal tube (1) is removed from the cyst. The aspirated material obtained by puncture is sent for cytological examination.

The use of the claimed technical solution will reduce injuries, the safety of the procedure by more accurately positioning the end of the fiber and complete intracavitary anesthesia due to fluid aspiration for cytological examination, local intracavitary anesthesia and laser irradiation of cystic neoplasms with one puncture.

Claims (1)

A puncture needle for intracavitary coagulation, containing two hollow metal tubes, the main and additional, with pointed working ends and cannulas at opposite ends, the main hollow metal tube contains a mandrin, characterized in that the additional hollow metal tube has a diameter equal to the lumen width of the main hollow a metal tube and is inserted into the main hollow metal tube at an angle, and both cannulas are made with plugs.

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