WO2017022869A1 - Introducer needle capable of preventing air infiltration and gun coupled with same - Google Patents

Abstract

The present invention relates to an introducer needle used in a biopsy for inspecting an internal body and a biopsy gun coupled with the same and, more specifically, to an introducer needle for a biopsy and a biopsy gun coupled with the same, the introducer needle guiding a biopsy needle into a human body and having a packing for blocking air to prevent external air from being introduced into the human body. According to the present invention, by configuring the packing having fine slits on the introducer needle for a biopsy, it is possible to prevent air infiltration without affecting insertion and removal of the biopsy needle, and by configuring a biopsy needle guide pipe at the shooting end of the biopsy gun used together, the biopsy needle can be effectively shot by the biopsy gun despite the existence of the packing.

Description

Introducer needles and associated guns prevent air ingress

The present invention relates to an introducer needle used in a biopsy for examining the inside of a living body, and a gun coupled thereto, and more particularly, to an outside of the packing to block air in the introducer needle for guiding the needle into the human body. The present invention relates to an introducer needle for preventing air from entering the human body and a gun coupled thereto. Hereinafter, the biopsy introducer needle and the biopsy gun will be described as an example, but the present invention will not be limited to the biopsy. In other words, the introducer needle and the gun according to the present invention may be used as it is even when a small-acting electrode using high frequency in the body or lung is used instead of the biopsy needle.

Medical examination and treatment technology is developing to minimize surgical procedures such as mass incision of patient skin. Surgical procedures require a lot of pain and a long recovery period for the patient and the psychological pressure on the procedure. In order to reflect this demand, medical instruments have recently been introduced to minimize the physical damage of the patient, even non-surgical or surgical.

Efforts have also been made in the field of biopsy, where the tissues of suspected lesions are directly collected and examined. Biopsy proceeds by inserting a biopsy needle into the patient's suspected lesion and collecting some tissue. In particular, in the case of lung biopsies, biopsies have been recently performed in a direction to minimize the needle insertion route. In other words, such a biopsy is first to determine the location of the suspected lesion in the patient's body using a CT, etc., and then do not directly insert the needle for biopsy in the position, instead the introducer needle (introducer needle) is formed in the tube Stick) The inducer needles are elongated tubular with lumens inside. Therefore, when inserting into the patient's body, a long, long rod-shaped stylet is inserted into the lumen. This will prevent the lumen from being blocked by the patient's tissue. The stylet is then pulled out behind the introducer needle and inserted several times, replacing the biopsy needle inside the introducer needle, to obtain multiple tissue samples by inserting only one needle (introducer needle). The method is widely used.

Biopsy needle 10 is usually the tip portion 11 is formed at the end of the cylindrical body portion 12 as shown in Figure 1a. In addition, the body portion 12 is formed with a groove 13 so that when the biopsy needle 10 is inserted into the human body, the target tissue is contained in the groove 13 and pulls out the biopsy needle 10 again out of the human body. We can collect target tissue. The biopsy needle 10 may further include a cylindrical sheath 14 surrounding the body portion 12 as shown in FIG. 1B. The sheath 14 is connected to a biopsy gun (not shown) at the end, and is fired at a high speed in the direction indicated by the arrow on the drawing by the biopsy gun while the biopsy needle 10 is inserted into the human body. do. In this way, the target tissue can be trapped between the groove 13 and the sheath 14 to be drawn out of the human body more effectively. Of course, the shape of the biopsy needle 10 described above is exemplary.

However, the conventional biopsy introducer needle has a problem that air is introduced into the body tissue of the patient in the process of replacing the biopsy needle inserted therein for multiple tissue sampling. When air is introduced into the tissue, it causes a thrombus (embolism) or embolism (especially when the air embolism may cause the cerebral infarction or coronary embolism again). In the current medical field, in the biopsy, the biopsy needle inserted into the introducer needle is inserted, the syringe is inserted to prevent air inflow, and when the new biopsy needle is ready, the syringe is removed again, and then the prepared biopsy It is preventing the inflow of air into the tissue in a primitive way to insert the dragon needle. In this way, of course, it does not completely prevent the inflow of air into the body of the patient, there is a disadvantage that the procedure is complicated and the procedure time increases.

The present invention has been made in view of the problems of the prior arts, and an object of the present invention is to provide a biopsy introducer needle which can prevent the inflow of air into the body of a patient even when the biopsy needle is removed.

The present invention for achieving the above object is an introducer needle for guiding the needle into the human body, the inducer needle is hollow tube portion extending in the longitudinal direction to be inserted into the human body; A hub which is hermetically coupled to one end of the hollow tube portion; And a packing inserted into the hub and having a fine slit formed at the center thereof.

In addition, the introducer needle of the present invention, the hub is composed of a first hub that is hermetically coupled to one end of the hollow tube portion and a second hub inserted into the rear end of the first hub and hermetically coupled and the packing is the first It is characterized in that it is inserted between the hub and the second hub.

In addition, the introducer needle of the present invention is characterized in that the fine slit formed in the central portion of the packing is straight.

In addition, the introducer needle of the present invention is characterized in that the fine slit formed in the center portion of the packing is circular.

In addition, the introducer needle of the present invention is characterized in that the thickness of the packing becomes thinner toward the center portion.

In addition, the introducer needle of the present invention is characterized in that a plurality of packings are inserted into the hub.

In addition, the introducer needle of the present invention is characterized in that at least one of the plurality of packings inserted into the hub varies in shape of the fine slit.

In addition, the introducer needle of the present invention is characterized in that the packing is a flexible material.

In another aspect, the present invention is coupled to the introducer needle with a needle including a sheath on one side (coupling side), to accommodate the needle inside the biopsy introducer needle, to operate the trigger In the gun capable of advancing the sheath at a high speed by a certain distance, the gun is formed on the coupling side is a pipe guided by the needle wrapped by the sheath, the pipe is the introducer needle and the gun is coupled to the introducer needle It is characterized in that through the packing of the fine slit to guide the advancement of the sheath.

According to the present invention, a packing having a micro slit in the inducer needle inserted into the living body, in particular the lung, can block the inflow of air without affecting the insertion and removal of the biopsy needle or the radiofrequency electrode. .

In addition, according to the present invention, the biopsy needle or the high-frequency therapeutic electrode guide pipe is configured at the firing end of the gun so that the biopsy needle or the high-frequency therapeutic electrode can be smoothly fired by the gun despite the presence of the packing.

1A and 1B are front views showing a general biopsy needle 10,

Figure 2 is an exploded perspective view of the biopsy introducer needle according to an embodiment of the present invention,

3 is a perspective view of a first hub 200 according to an embodiment of the present invention;

4 is a perspective view of a second hub 400 according to an embodiment of the present invention;

5 is a perspective view of a packing 300 according to an embodiment of the present invention;

6 is a partial cross-sectional view of the biopsy introducer needle according to an embodiment of the present invention;

7 to 9 are each a perspective view of a packing 300 according to another embodiment of the present invention,

10 is a cross-sectional perspective view of the packing 300 of FIG. 9;

11 is a sectional perspective view of a packing 300 according to another embodiment of the present invention;

12a and 12b is a view showing a penetrating needle 10 for the biopsy through the packing 300 according to an embodiment of the present invention,

Figure 13a to Figure 13c is an exploded perspective view of the biopsy introducer needle for showing various embodiments of the present invention,

14 is a perspective view showing a state in which the biopsy introducer needle 1000 according to an embodiment of the present invention and the biopsy gun 500 according to an embodiment of the present invention are combined;

15 is an enlarged perspective view of a coupling side of the biopsy gun 500 according to an embodiment of the present invention;

FIG. 16 is a partially enlarged view of the coupling side of the biopsy introducer needle 1000 and the biopsy gun 500 of FIG. 14.

Hereinafter, with reference to the embodiments and the accompanying drawings according to the present invention will be described in detail. In the present specification, for the readability of the drawings, if the corresponding structures in the drawings or the same configuration can be easily confirmed that the reference numerals in some drawings have been omitted.

2 is an exploded perspective view of the biopsy introducer needle 1000 according to an embodiment of the present invention. The biopsy introducer needle 1000 may be composed of a hollow tube part 100, a first hub 200, a packing 300, and a second hub 400. The hollow tube part 100 is inserted into a target site inside the human body in the procedure of the biopsy, and serves to guide the biopsy needle (not shown) inserted into the inside of the hollow tube to the corresponding target site. The other end is combined with the first hub 200. The packing 300 is inserted into the first hub 200 to prevent outside air from flowing into the inside of the hollow tube part 100. The second hub 400 is coupled to serve as an insertion hole into which the biopsy needle is inserted in the procedure.

3 is a perspective view of the first hub 200. The second hub 400 and the packing 300 is inserted into the first hub 200, the upper coupling hole 210 is formed in a circular shape at the center of the upper end of the first hub 200 with the second hub 400 Guide grooves 230 and 240 guide the coupling may be formed in a plurality of radial. The guide grooves 230 and 240 are only the first guide groove 230 that engages with the coupling guide 420 of the second hub 400, and the insertion guide 320 of the packing 300 to be described later by digging deeper into the groove. ) May be divided into second guide grooves 240 that can be coupled to each other. At the lower end, a lower coupler 220 for coupling with the hollow tube part 100 is formed.

4 is a perspective view of a second hub 400. The second hub 400 has an insertion hole 410 formed at the center thereof to serve as an inlet for inserting a biopsy needle (not shown). In addition, the outer circumferential surface of the second hub 400 is inserted into and coupled to the upper coupling hole 210 of the first hub 200, and a plurality of coupling guides 420 are formed radially, which guides the first hub 200. Coupling with the grooves (230, 240).

5 is a perspective view of a packing 300 according to an embodiment of the present invention. The packing 300 has a flat disc shape, and a linear fine slit 310 is formed at the center. Formation of the linear fine slit 310 is preferably made of a method of simply cutting the center portion, not a method of deleting the center portion of the packing 300 in a straight line. In this way, the micro slit 310 can pass the biopsy needle while the gap is widened when the biopsy needle is inserted toward the micro slit 310 without opening the air because the gap is not normally opened. Therefore, in the replacement of the needle for biopsy, it is possible to effectively prevent the inflow of air into the hollow tube part 100. In addition, in this regard, the packing 300 needs to be made of a flexible material such as silicon. An insertion guide 320 is formed on one side of the outer circumferential surface to guide the coupling with the first hub 200. The insertion guide 320 is inserted into the second guide groove 240 of the first hub 200 to guide the coupling between the two.

6 is a partial cross-sectional view of the biopsy introducer needle 1000 in accordance with one embodiment of the present invention. The hollow tube part 100 is inserted into and coupled to the lower coupler 220 of the first hub 200, and the packing 300 is first inserted into the upper coupler 210 and the second hub 400 is inserted thereon. And combine. As can be seen in the figure, the airtight coupling between these components does not introduce external air into the hollow tube part 100. In addition, as described above, since the fine slit 310 (FIG. 5) is formed in the packing 300, a biopsy needle (not shown) is inserted into the insertion hole 410 and passes through the fine slit 310 to the inside of the hollow tube part 100. Can be reached.

7 to 9 are perspective views of a packing 300 according to another embodiment of the present invention. Packing 300 of Figure 7 has a circular fine slit 310 in the center. In addition, the packing 300 of FIG. 8 and the packing 300 of FIG. 9 each have a linear fine slit 310 and a circular fine slit 310, and in particular, their thickness increases toward the center of the packing 300. It has a decreasing shape. Regardless of its shape, the fine slit 310 is preferably formed small so that air is hardly penetrated in the normal state, that is, in a state where the biopsy needle is not inserted. In particular, the circular fine slits 310 are preferably 0.5 mm to 3 mm wide.

10 is a cross-sectional perspective view of the packing 300 of FIG. As can be seen in the figure, the packing 300 may be configured such that the central portion becomes thinner than the peripheral portion. That is, by digging both sides of the packing 300 in the form of a plate may be reduced in thickness toward the center. 11, a similar effect can be obtained by digging only one surface of the packing 300 in the form of a plate. The reason why the central portion of the packing 300 is configured to be thinner than the periphery is to give more flexibility to the micro slit 310, so that the periphery of the biopsy needle penetrates further when the biopsy needle penetrates the micro slit 310. In order to more effectively block the inflow of air by enclosing it, the insertion of the biopsy needle is made easier.

12A and 12B illustrate a state in which the biopsy needle 10 penetrates the packing 300 according to an embodiment of the present invention. As described above, the packing 300 has a fine slit 310 at the center thereof, and is inserted into the first hub 200 to block air inflow from the outside, and the biopsy needle has the fine slit 310. It can be securely inserted through.

13A, 13B, and 13C are exploded perspective views of the biopsy introducer needle 1000 for illustrating various embodiments of the present invention. As shown in FIG. 13A, only one packing 300 may be inserted into the first hub 200, and a plurality of packings 300 may be overlapped as shown in FIGS. 13B and 13C. Thus, when the packing 300 is configured to overlap, it acts as a double, triple screening film to prevent the outside air inflow can be more completely prevent the inflow of the outside air. When the packing 300 is configured in multiple manners as described above, the shape of the fine slits 310 is preferably configured differently. For example, when overlapping the packing 300 as shown in Figure 13b, the shape of the fine slit 310 of each packing 300, for example, straight and circular, it is preferable to configure differently. Since the micro slits 310 having different shapes may have different air blocking characteristics, the airtightness may be further secured by overlapping the packing 300 having different characteristics.

14 is a perspective view illustrating a state in which a biopsy introducer needle 1000 and a biopsy gun 500 according to an embodiment of the present invention are combined according to an embodiment of the present invention. One side (coupling side) of the biopsy gun 500 is equipped with a biopsy needle 10 and by operating the trigger 510 on the opposite side, the biopsy gun 500 fires the mounted biopsy needle 10, That is, it advances at high speed. In more detail, as described above with reference to FIGS. 1A and 1B, the body portion 12 of the biopsy needle 10 generally includes a groove 13 and also a sheath surrounding the body portion 12. (14). In performing a biopsy, the biopsy needle 10 is inserted into the biopsy gun 500 and then inserted into a biopsy introducer needle 1000 that is first inserted into the human body. Thereafter, when the operator operates the trigger 510 of the biopsy gun 500, the biopsy gun 500 fires the sheath 14 to advance by a predetermined distance. Due to the sudden advancement of the sheath 14, a portion of the patient's tissue may be excised and immersed in the groove 13 to be taken out of the human body.

Figure 15 is an enlarged perspective view of the coupling side of the biopsy gun 500 according to an embodiment of the present invention. The biopsy gun 500 of the present invention may include a guide pipe 520 for guiding the launch of the biopsy needle 10 on the coupling side. The guide pipe 520 may include a hollow tube portion for accommodating the biopsy needle 10 therein, and the inner diameter of the hollow tube portion may be slightly larger than the outermost diameter of the biopsy needle 10 accommodated therein. If the inner diameter is less than or equal to the outermost diameter of the biopsy needle 10, that is, the outer diameter of the sheath 14, the biopsy needle 10 may or may not be accommodated inside the guide pipe 520. The sheath 14 of the biopsy needle 10 may also be prevented from being fired by the biopsy gun 500. The guide pipe 520 is installed for the purpose of preventing the forward speed of the sheath 14 from being reduced by the packing 300 of the biopsy introducer needle 1000 in the firing by the biopsy gun 500. . As mentioned above, the fine slit in the center of the packing 300 (310 in Figs. 7 to 11) is a configuration for preventing the air from entering the human body and therefore is formed so small that the air almost does not penetrate desirable. Accordingly, the friction force between the micro slit 310 and the sheath 14 in the process of inserting the biopsy needle 10 including the sheath 14 into the biopsy introducer needle 1000 through the micro slit 310. This may interfere with the insertion and thus it is necessary to insert the biopsy needle 10 with greater force.

In particular, the frictional force is a process of releasing the sheath 14 by operating the trigger 510 of the biopsy gun 500 while the biopsy introducer needle 1000 and the biopsy needle 10 are inserted into the human body. In this case, the rate of advancement of the sheath 14 can be lowered to weaken the cutting effect of the target tissue by the sheath 14. At this time, when the guide pipe 520 is configured in the biopsy gun 500 and the guide pipe 520 is combined with the biopsy introducer needle 1000, the packing 300 inside the micro slits 310 is formed. If configured to penetrate through the biopsy needle 10 can be inserted into the biopsy introducer needle 1000 through its inner passage completed by the guide pipe 520, so that the insertion is smooth and the biopsy gun In the firing of the sheath 14 through the 500, the case where the firing speed is reduced by the packing 300 can be prevented.

FIG. 16 is a partially enlarged view of the coupling side of the biopsy introducer needle 1000 and the biopsy gun 500 of FIG. 14. As described above, the guide pipe 520 when the biopsy introducer needle 1000 and the biopsy gun 500 in accordance with an embodiment of the present invention is to seal the packing 300 of the biopsy introducer needle 1000 Configured to penetrate. Eventually, when the biopsy needle 10 is inserted into the biopsy introducer needle 1000 while being combined with the biopsy gun 500 in the practice of the invention, the biopsy needle 10 is completed by the guide pipe 520. The insertion of the biopsy needle 10 is not disturbed by the packing 300 because it may be inserted into the biopsy introducer needle 1000 through an inner passage. Even when the sheath 14 of the biopsy needle 10 is fired, since the sheath 14 and the packing 300 do not contact each other, the sheath 14 and the packing 300 may also be fired by a predetermined distance toward the inside of the human body without receiving the resistance of the packing 300. have.

As used herein, the term "slit" is used to mean a fine incision to a fine hole and does not necessarily mean a narrow elongated shape. In addition, as described above, as an example to which the present invention can be applied, the inducer needle for guiding the insertion of the biopsy needle has been described, but the present invention is not limited to the use of the biopsy needle. The same applies to insertion into the living body, in particular the lungs, using the inducer needle. In this case, the biopsy needle is only changed to an electrode for high frequency treatment, and the inducer needle or gun according to the present invention can be used in the same manner, which is not limited to the preferred embodiment, and departs from the gist of the present invention as claimed in the claims. Without this modification, any person having ordinary skill in the art to which the present invention pertains can make various modifications, and such modifications are within the scope of the claims.

According to the present invention, a packing having a micro slit in the inducer needle inserted into the living body, especially the lung, can block the inflow of air without affecting the insertion and removal of the biopsy needle or the radiofrequency electrode. In addition, a biopsy needle or radiofrequency guide electrode guide pipe is formed at the firing end of the biopsy needle or radiofrequency therapy electrode gun so that the biopsy needle or radiofrequency electrode is smoothly fired by the gun despite the presence of the packing. Can be.

Claims (9)

In the inducer needle for guiding the needle into the human body, Hollow tube portion extending in the longitudinal direction to be inserted into the human body; A hub which is hermetically coupled to one end of the hollow tube portion; And An introducer needle is prevented from entering the air, characterized in that it comprises a; is inserted into the hub and the packing is formed with a fine slit in the center. The method of claim 1, The hub is composed of a first hub which is hermetically coupled to one end of the hollow tube part and a second hub which is inserted into the rear end of the first hub to be hermetically coupled and a packing is inserted between the first hub and the second hub. Introducer needle to prevent air inflow. The method of claim 1, The micro slit is formed in the center of the packing introducer needle is prevented from entering the air, characterized in that the straight. The method of claim 1, The micro slit formed in the center of the packing needle is prevented from entering the air, characterized in that the circular. The method of claim 1, Introducer needle is prevented from entering the air, characterized in that the packing becomes thinner toward the center portion. The method of claim 1, The packing is an introducer needle is prevented from entering the air, characterized in that the plurality is inserted into the hub. The method of claim 6, At least one of the plurality of packings to be inserted into the hub is the introducer needle is prevented from entering air, characterized in that the shape of the fine slit. The method of claim 1, Introducer needle to prevent air inflow, characterized in that the packing is a flexible material. On one side (coupling side), combined with any one of the introducer needles of claim 1 with the needle including a sheath, to accommodate the needle inside the introducer needle, and to activate the trigger In the gun which can advance the sheath at a high speed by a certain distance, The coupling side is formed with a pipe for guiding the needle wrapped by the sheath, the pipe is characterized in that the introducer needle and the gun is coupled to guide the advancement of the sheath through the packing of the inducer needle through the fine slit. Gun made with.

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