KR102003456B1 - One-time usable core biopsy device - Google Patents

Abstract

The present invention provides a technique for loading a biopsy device so that one-time collection and multiple-time collection can be performed at one time without changing the phage form with only one hand holding the biopsy device, and a technique for easily recovering the collected tissue. Disposable cutting biopsy device according to an embodiment of the present invention, the housing extending in a direction parallel to one axis and having a hollow portion therein; The inner needle is inserted into and fixed in the housing through the first direction short-side hole of the housing, and a needle tube is formed at the distal end to cut the tissue accommodated in the tissue collecting groove, and the needle tube including the inner needle is A needle set including an outer shell formed to reciprocate with respect to the inner needle; The length of the direction parallel to one axis is formed longer than the length of the direction orthogonal to one axis, and is connected to the short side of the outer surface of the second direction opposite to the first direction and one axis. A master block arranged to reciprocate in a direction parallel to the axis; A drive unit connected to the master block, the drive unit including a first spring, a hub block, and a second spring having needle set through parts connected to the hollow part in a row; And a loading unit including a loading connector installed to be able to vary a position of the hub block, and a loading handle connected to the loading connector to apply a force in the second direction to the loading connector.

Description

Disposable Cutting Biopsy Device {One-time usable core biopsy device}

The present invention relates to a sample apparatus of biological tissues, and more particularly, by adjusting the main body to close the sample needle combined with the acupuncture needle and the outer skin to the biological tissue, the operator manipulates the movement of the outer needle into the tissue collection groove of the acupuncture needle. The present invention relates to a biological tissue specimen device for accommodating a sample of biological tissue, cutting the sample from the original living body, sealing the tissue collecting groove of the needle, and collecting the biological tissue.

In general, for the examination of biological tissues, a method of injecting an apparatus capable of sampling biological tissues into biological tissues and collecting tissues to be sampled from among biological tissues is used. This type includes aspiration biopsy and excisional biopsy.

In the case of aspiration biopsy, a needle of a general type is inserted into a tissue, and then a tissue is collected by aspirating cells of the lesion site, and classified into a fine needle aspiration biopsy and a large needle aspiration biopsy according to the diameter of the needle. The large needle aspiration biopsy method can extract a large amount of cells, but the side diameter of the needle is large, resulting in high side effects such as tissue destruction and patient fear composition. In the case of fine needle aspiration biopsy, the needle is thin and easy to insert and provides convenience to the patient, but the accuracy of diagnosis was not high because there is a limit in the size of tissue to be collected.

For this purpose, recently, a cutting biopsy that can be obtained by cutting the tissue by the shape of the needle to maintain the histological form intact and to increase the diagnostic accuracy. In the case of a cutting biopsy, while minimizing the diameter of the needle inserted into the affected part, minimizing repetitive invasive behavior, and enabling a precise procedure for a small sample, it is being used much more recently than aspiration biopsy.

The cutting biopsy specimen device described in Korean Patent Nos. 10-1463867 and 10-1551311 is provided to enable forward movement to the inner ear in the form of enveloping the inner ear and the inner ear with a tissue collecting groove, and a blade is formed at the tip. There is a needle set including the outer skin to cut the tissue, the inner ear first to advance forward, and then the outer skin to advance forward again, the inner needle enters to contain the sample and the sample is cut through the blade of the outer surface Is being used.

In addition, the specimen mechanism described above has an operation method in which a user applies a specific operation a plurality of times to reverse the needle and the face through a plurality of loadings to reach a loading state.

However, in the conventional cutting biopsy apparatus described above, in the cutting mechanism, the inner needle is first fired and the outer shell is fired so that the very thin inner needle can not penetrate or bend through the dense coat tissue or the hard calcified tissue during the advancement. In this case, the nodule may be pushed backward or the inner ear may not reach the exact tissue area to be collected, and thus the problem of making the procedure very difficult has been pointed out.

On the other hand, the technology for improving accuracy, such as using an ultrasonic guide equipment to accurately reach the needle set to the above-described tissue to be collected has been developed a lot. However, in the prior art, the operator generally changes the shape of holding the biopsy device or is loaded with both hands. Therefore, there is a possibility that the targeting of the ultrasonic guide may be disturbed, especially when multiple repetitions are required.

Accordingly, the operator guides and manipulates the ultrasonic guide with one hand, and the biopsy device is held with the other hand. There has been an increasing need for loading biopsy instruments so that they can be performed at one time, and techniques for easily recovering the tissue harvested.

Accordingly, the present invention can easily perform one or multiple times of loading by minimizing the change of the gripping form with only one hand holding the biopsy device, and loading and firing can easily change the loading form for a small amount or a large amount of sampling. It is an object of the present invention to provide a biopsy instrument having a structure.

In addition, the present invention, by newly presenting the movement relationship between the firing of the inner needle and the outer shell, it can not penetrate or bend through the dense coating tissue or hard calcified tissue by the forward firing of the inner needle, which causes the nodules to push backward Another object is to solve the problem that the procedure is very difficult to reach, because the puncture may not reach the exact tissue area to be collected.

In addition, the present invention has another object to provide a technology that can easily recover the tissue collected by the biopsy instrument.

In order to achieve the above object, a disposable cutting biopsy device according to an embodiment of the present invention, the housing extending in a direction parallel to one axis and having a hollow formed therein; The inner needle is inserted into the housing through the first directional short side hole of the housing and has a tissue collecting groove formed therein, and a blade is formed at the tip to cut the tissue accommodated in the tissue collecting groove. A needle set including a needle tube formed with a needle tube reciprocating relative to the inner needle; The length of the direction parallel to the one axis is formed longer than the length of the direction orthogonal to the one axis, connected to the short side of the outer surface in the second direction opposite to the first direction and the one axis; A master block arranged to reciprocate in a direction parallel to the one axis in the hollow part; A driving unit connected to the master block, the driving unit including a first spring, a hub block, and a second spring having the needle set through part connected to the hollow part in a row; And a loading unit including a loading connector installed to be able to vary a position engaged with the hub block, and a loading handle connected to the loading connector to apply a force in the second direction to the loading connector. do.

According to each embodiment of the present invention described above, the user manipulates the loading unit in such a way as to apply a holding force in a gripped state, and is pushed back through the loading state so that a restoring force is applied to the first and second springs. After the inner and outer skins enter the body together, the outer skin has a reciprocating structure that retracts and advances from the lower acupuncture. It is easy to perform, and it is effective to provide a biopsy apparatus having a loading and firing structure that can easily change the loading form for a small amount or a large amount of collection. It may not penetrate or bend, which may cause the nodules to be pushed backwards or the exact tissue to be harvested. There is sokchim the station can not be reached, you can solve the problem that the procedure is very difficult.

On the other hand, when using the ultrasonic guide, the user can carry out the loading and firing with only one hand while holding the ultrasonic guide, the targeting is maintained accurately has the effect of increasing the accuracy of the procedure.

On the other hand, by moving the outer connecting bar after collecting the tissue by the coupling structure of the outer connecting bar of the master block to which the outer surface is fixed, it is possible to easily recover the tissue existing in the tissue collecting groove of the sediment without any other manipulation. Simple sample recovery is possible.

On the other hand, it is possible to further implement the additional function by increasing the length of the moving direction of the master block to be moved in close contact with the hollow portion of the housing, there is an effect that enables a precise procedure by performing a stable sliding operation.

1 is a cross-sectional view of a combined cut biopsy device in accordance with one embodiment of the present invention.
2 is a view for explaining a coupling example of a drive unit according to an embodiment of the present invention.
3 and 10 are views for explaining the combined state of the shell, the master block and the drive unit according to an embodiment of the present invention.
4 is a schematic diagram illustrating examples of arrangement of a drive unit for implementing an embodiment of the present invention.
5 is a view for explaining the structure of a housing according to an embodiment of the present invention.
6 is a view for explaining the structure of the needle set according to an embodiment of the present invention.
Figure 7 is a coupling diagram of the outer surface and the master block in accordance with an embodiment of the present invention.
Figure 8 is an exploded view for explaining the structure of the housing and the firing unit according to an embodiment of the present invention.
9 is an exploded view of a top and master block according to an embodiment of the present invention in accordance with an embodiment of the present invention.
11 is a perspective view of a loading unit according to an embodiment of the present invention.
12 is a combined state diagram of a disposable cutting biopsy instrument in accordance with an embodiment of the present invention.
Figure 13 is a view for explaining the coupling state except the housing of the disposable cutting biopsy device according to an embodiment of the present invention.
14 is a view for explaining the operating state of the disposable cutting biopsy tool according to an embodiment of the present invention.
15 is a view for explaining the operation at a time of loading the disposable cutting biopsy tool according to an embodiment of the present invention.
16 is a view for explaining the operation at the time of double loading of the disposable cutting biopsy apparatus according to the embodiment of the present invention.
FIG. 17 illustrates examples of a loading unit for implementing one embodiment of the present invention. FIG.
18 is a diagram for explaining a structural example of a first firing unit.

In the following, various embodiments and / or aspects are now disclosed with reference to the drawings. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more aspects. However, it will also be appreciated by one of ordinary skill in the art that this aspect (s) may be practiced without these specific details. The following description and the annexed drawings set forth in detail certain illustrative aspects of the one or more aspects. However, these aspects are exemplary and some of the various methods in the principles of the various aspects may be used and the descriptions described are intended to include all such aspects and their equivalents.

Moreover, various aspects and features will be presented by a system that may include a number of devices, components, and / or modules, and the like. The various systems may include additional devices, components, and / or modules, etc., and / or may not include all of the devices, components, modules, etc. discussed in connection with the drawings. It must be understood and recognized.

As used herein, “an embodiment”, “an example”, “aspect”, “an example”, etc., may not be construed as having any aspect or design described being better or advantageous than other aspects or designs. . In addition, the terms "comprises" and / or "comprising" mean that such features and / or components are present, but exclude the presence or addition of one or more other features, components, and / or groups thereof. It should be understood that it does not.

In addition, terms including ordinal numbers such as first and second may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term and / or includes a combination of a plurality of related items or any item of a plurality of related items.

In addition, in the embodiments of the present invention, unless otherwise defined, all terms used herein including technical or scientific terms are generally understood by those skilled in the art to which the present invention belongs. Has the same meaning as Terms such as those defined in the commonly used dictionaries should be interpreted as having meanings consistent with the meanings in the context of the related art, and ideally or excessively formal meanings, unless explicitly defined in the embodiments of the present invention. Not interpreted as

Meanwhile, in the following description, the matters described in the drawings are partially omitted or excessively enlarged or reduced in order to explain the functions of the elements of the present invention, but the corresponding matters are technical features and rights of the present invention. It will be understood that the present invention is not intended to limit the scope.

In addition, in the following description, in order to explain the components constituting one technical feature or invention, a plurality of drawings will be described with reference to the same.

1, 3, 5, 6 and 9, the disposable cutting biopsy device according to an embodiment of the present invention, extending in a direction parallel to the one axis (D) and the hollow portion therein 11 includes a housing 10 formed therein.

Disposable cutting biopsy instrument is one end 201 is inserted into the housing 10 through the first hole (D1) short side hole 12 of the housing 10 and the inner ear 20 where the tissue collection groove 202 is formed. ), And a blade is formed at the tip 212 to cut the tissue accommodated in the tissue collection groove 202, and a needle tube (not shown) including the inner needle 20 is formed to refer to the inner needle 20. It includes a needle set including a shell 21 reciprocating to.

The disposable cutting biopsy instrument is connected to the end side 213 of the outer cover 21 in the second direction D2 in the opposite direction with respect to the first direction D1 and one axis D, and the one axis D and The length of the parallel direction is formed longer than the length of the direction orthogonal to the one axis (D), the master block is arranged to reciprocate in a direction parallel to the one axis (D) in the hollow (11) 30).

The disposable cutting biopsy instrument is connected to the master block 30, the hub block 40 and the first spring 50, needle set penetrating portion 41 is formed and the first spring 50 is arranged in a row in order to the hollow portion 11 And a drive unit comprising two springs 60.

Disposable cutting biopsy mechanism is connected to the loading connector 52 and the loading connector 52 which is installed so that the position that is locked to the hub block 40 is applied to the loading connector 52 in the second direction (D2) It includes a loading unit including a loading handle 51 to be given.

Meanwhile, referring to FIGS. 1, 6, and 9, a through hole 211 extending from the needle tube is formed at the end side 211 of the outer cover 21, and the through hole 211 is illustrated in FIG. 9. As described above, the through hole (no identification number) is positioned above the short-side hole 12 in the first direction D1 of the master block 30, so that the hollow portion 11 and the master block 30 generate space. When the inside of the needle tube and the tissue collecting groove 202 is fired by the volume change, it is possible to perform a function of forming a negative pressure according to the retreat movement of the master block 30, that is, the movement in the second direction D2.

As will be described in the description with reference to FIG. 14 which will be described later, in the present invention, the needle 20 has one end 201 fixed to the housing 10, and the outer cover 21 is described above in the master block 30. It is installed to be fixed as described above, the outer shell 21 enters into the state containing the tissue collecting groove 202 of the inner ear 20 when entering the body, and then the motion of the master block 30 and the drive unit at the time of launching Through the outer cover 21 retreats in the second direction (D2) through the first direction (D1) again, the tissue is cut to accommodate the tissue harvesting groove 202.

As a result, it may not be able to penetrate or bend through the dense coat tissue or hard calcification tissue by the forward firing of the needle 20, which may cause the nodule to be pushed backward or the needle may not reach the correct tissue to be collected. There is a problem that the procedure is very difficult to solve.

Meanwhile, referring to FIGS. 2 and 4 together, the driving unit may be implemented as the following example in an embodiment of the present invention.

In one embodiment (FIGS. 2 and 4 (a)), the first spring 50 is installed as a tension spring to connect and couple the 40 between the master block 30 and the hub block, and the second spring 60. The compression spring may be installed to connect the hub block 40 and the short side of the hollow portion 11 in the second direction D2.

In the above-described embodiment, only the hub block 40 is moved and fixed in the second direction D2 when loaded, and the inside of the hollow part 11 of the master block 30 is operated by an operation of the launch unit to be described later. When the fixing is released, the outer surface of the master block 30 retreats as described above as the master block 30 moves in the second direction D2 by the restoring force of the first spring 50.

Thereafter, when the master block 30 releases the fixed movement of the hub block 40, the master block 30 and the hub block 40 simultaneously move in the first direction D2 by the restoring force of the second spring 60. As it moves, the cover 21 advances again as described above.

Meanwhile, in another embodiment illustrated in FIG. 4B, the first spring 51 is a compression spring that is installed to connect the master block 30 with the short side of the first direction D1 of the hollow part 11. The second spring 61 is a compression spring having a greater restoring force than the first spring 51, and is installed to connect and couple the hub block 40 and the second side D2 of the hollow part 11 to one end side thereof. 30 and the hub block 40 are installed to be separated from each other.

In the above-described embodiment, only the hub block 40 is moved and fixed in the second direction D2 when loaded, and the inside of the hollow part 11 of the master block 30 is operated by an operation of the launch unit to be described later. When the fixing is released, the outer surface of the master block 30 retreats as described above as the master block 30 moves in the second direction D2 by the restoring force of the first spring 51.

Subsequently, when the master block 30 moves toward the hub block 40 and then applies a force to the hub block 40 to release the movement of the hub block 40, the first spring of the second spring 61 is moved. As the master block 30 and the hub block 40 move in the first direction D2 at the same time by the restoring force greater than 51, the cover 21 is advanced again as described above.

Referring to FIG. 5, a detailed structure of the housing 10 may be described. Referring to FIG. 5, the housing 10 is formed on one surface of the hollow part 11 and includes a first catching part 13 for fixing the master block 30 during loading.

Meanwhile, the housing 10 may be formed on the other side of the hollow part 11, and a second catching part 14 may be formed to fix the hub block 40 when loaded. On the other hand, the housing 10 may be recessed (recess) the housing side second spring coupling part 15 for fixing the second spring 60 described above.

7 and 9, detailed structural examples of the master block 30 can be seen. In the area corresponding to the above-described first locking portion 13 of the master block 30 where the outer cover 21 is fixed at the above-described position, the first locking portion 13 is a default state which is a state at the time of loading and when the shooting is completed. It is arranged so as to be caught in the () and is fixed to the relative position with respect to the housing 10 while suppressing the master block 30 to move in the second direction (D2), and to the hollow portion 11 from the outside of the housing 10 When the firing unit (not shown) installed to be inserted and moved is pushed and moved in the direction in which the hollow unit 11 is inserted, the state caught by the first catching unit 13 is released, so that the master block 30 is as described above. After the first spring 50 is moved in the second direction D2 by the elastic restoring force, the firing unit is moved toward the outside of the housing 10 while returning to the default state after the launch is completed. 1 is disposed so as to be caught by the engaging portion 13, the master block 30 Second direction comprises an elastic body of a master block engaging portion 31 such that the state of fixing the relative position of the housing 10 while inhibited from moving into (D2).

That is, the master block engaging portion 31 is provided as shown in FIGS. 7 and 9 so as to have an elastic force in a direction perpendicular to the above-described one axis D, and in the default state, that is, the restored state, based on FIG. Maintaining the restoring force toward the upper surface is in a state of being engaged with the first locking portion 13 described above. As a result, the master block 30 is fixed in a state of being not moved in the hollow part 11 despite the restoring force of the first spring 50.

However, when a pressing force is applied to the master block catching part 31, the state of catching the first catching part 13 is released through the lower movement of the master block catching part 31, and the master block 30 is then removed. The first spring 50 is moved in the second direction D2 by the restoring force.

Subsequently, as described above, the master block 30 is moved in the first direction D1 together with the above-described hub block 40 by the restoring force of the second spring 60. 2 When the restoring force of the spring 60 is set, the master block catching portion 31 moves toward the first catching portion 13 while being pressed by the shape, and the state in which the master block catching portion 31 is pressed is released. While elastically moving to the upper side again, the first locking portion 13 is in a state of being caught again, and the first spring 50 is maintained immediately before the loading state.

In order to perform the function of the above-described master block catching portion 31, the master block catching portion 31 is the first catching point 311 and the firing unit, which are areas caught by the first catching portion 13 in the above-described default state. As the first locking point 311 is described above, the first locking point 311 is engaged with the first locking part 13 by transmitting a pressing force when it is pressed and moved in the direction inserted into the hollow part 11. And first pressing points 312 and 313 for lowering and releasing the master block engaging portion 31 corresponding to the lower portion.

Meanwhile, as illustrated in FIGS. 7 and 9, two first pressing points 312 and 313 exist in both directions due to the inclined structure of the master block engaging portion 31. In the present invention, the first pressing points 312 and 313 are configured according to the shape and operation of the firing unit.

For this purpose, referring to FIG. 8, in one embodiment of the present invention, two launch units 181 and 191 exist as a first launch unit 181 and a second launch unit 191. The first firing unit 181 is installed to be reciprocated through a first firing unit insertion guide hole 18 formed in a direction to be inserted into the hollow portion 11 on the upper surface of the housing 10.

In this case, in order to prevent an error in launching, as shown in FIG. 8, the first launching unit insertion guide hole 18 is formed in a “b” shape. Referring to FIG. 18, the first launching unit 181 is provided. ) Is composed of a first firing unit head 1810, a connecting elastomer 1812 and a first firing unit body 1813.

The connecting elastic body 1812 is configured to be moved along the first firing unit insertion guide hole 18 described above, and the first firing is performed in a large space at one end side of the first direction D1 of the first firing unit insertion guide hole 18. It is a configuration provided with an elastic force so as to move laterally along the unit insertion guide hole (18).

The first firing unit head 1810 is configured to protrude to apply a pressing force through a finger or the like, and the first firing unit body 1813 performs the function of pressing the first pressing point 312 described above. It is a constitution.

Referring back to FIG. 8, the second firing unit 191 is a configuration capable of applying a pressing force to the first pressing point 313 described above, and the housing 10 as shown in FIGS. 8, 14, and 16. In the hollow portion 11 along a guide line (not shown) in one axis (D) direction formed in the hollow portion 11 in the second direction (D2) short side of the () is capable of reciprocating in one axis (D) direction Means a configuration installed to For the above-described structure, the second launch unit insertion guide hole 19 may be formed through the housing 10 to be connected to the hollow portion 11.

As described above, the second firing unit 191 may press the first pressing point 313 to perform a function similar to that of the first firing unit 181. That is, the first firing unit 181 and the second firing unit 191, when the operator grips the housing 10 for the procedure, regardless of the gripping form of the operator while minimizing the change in the grip form of the outer retreat forward It means a configuration for achieving the effect of performing the launch so that it can be initiated.

Meanwhile, referring to FIG. 13 together with FIG. 7 described above, in the second side direction D2 of the master block 30 in the second direction D2 from the main body region of the master block 30 in a wing bar shape. As a configuration in which the protrusion is extended, the hub block locking release unit 32 formed in a bar shape is formed so that the hub block 40 can be released from being fixed to the second locking portion 14.

Similar to the coupling state of the master block engaging portion 31 and the first locking portion 13 described above, referring to FIGS. 2, 10 and 13, the hub block 40 has a hub block locking portion 42 as described later. ) Is formed. The hub block catching portion 42 is caught by the second catching portion 14 in the same manner as the above state in which the master block catching portion 31 and the first catching portion 13 are coupled, so that the hub block 40 retreats when loaded. While being pushed into the second locking portion 14 by the elastic force of the hub block locking portion 42, it is in the loaded state and is caught by the second locking portion 14, and thus the first direction D1 of the hub block 40 is fixed. Relative position is fixed in relation to the hollow part 11 while advancing to) is suppressed.

At this time, the hub block latch release unit 32, when the master block 30 is moved back in the second direction (D2) by the above-described process at the time of launching by the restoring force of the first spring 50, the hub block latch A pressing force is applied to the portion 42 to move the hub block locking portion 42 to release the locking with the second locking portion 14. As a result, the hub block 40 moves in the first direction D1 while pushing the master block 30 in the first direction D1, and as a result, the cover 21 moves in the first direction D1 again. By cutting the tissue to be sealed in the tissue collection groove 202 of the spit 20.

2 and 10 to perform the above-described function, the hub block 40 is arranged so that the loaded state is caught by the second locking portion 14 so that the hub block 40 moves in the first direction D1. As described above, the second locking portion (2) is pressed by the pressing force applied by the hub block locking release unit 32 as the hub block locking release unit 32 moves in the second direction D2. 14 is released, the hub block 40 includes a hub block engaging portion 42 which is an elastic body for moving the hub block 40 in the first direction D1 by the elastic restoring force of the second spring 60.

In this case, referring to FIG. 2, the hub block catching part 42 may be pressed by the second catching point 421 and the hub block catching release unit 32, which are areas caught by the second catching part 14 in the loaded state. The second locking point 421 may be configured to include a second pressing point 422 that releases the locked state from the second locking portion 14. At this time, the second catching point 421 and the second pressing point 422 form an inclined portion where the point where the connecting point is most protruded, and as shown in FIG. 2, the second catching point except for the second pressing point 422. The second locking point 421 may be engaged with the second locking portion 14 in the space on the side of the first direction D1 of the point 421.

In addition, the hub block locking release unit 32 may provide a pressing force while the hub block locking release unit 32 is moved along the inclined portion of the second pressing point 422, and thus the hub block locking portion 42 is pressed. The jam with the catch 14 may be released.

Meanwhile, in order to connect the above-described first spring 50 and the second spring 60 to the master block 30 and the hub block 40, referring to FIG. 10, the master block 30 and the hub block 40 are described. ) Are spring recesses 341 and 45 for receiving adjacent first spring 50 or second spring 60, respectively.

Meanwhile, as described above, in the present invention, the master block 30 and the hub block 40 may be in contact with each other, and the master block 30 and the hub block 40 are formed on the inner surface of the hollow part 11 in the housing 10. In contact with each other, a shock absorbing plate may be formed on at least one end side of the master block 30 and the hub block 40 in one axis D direction.

2, 10, and 13, a configuration for guiding the retraction movement of the hub block 40 in the second direction D2 by the loading unit may be included. To this end, the hub block 40 includes a first directional inclined portion 4412 caught by the loading connector 52 and a second directional inclined portion slid when the loading connector 52 is moved to its original state by a restoring force ( 4411, which may include a sawtooth shaped hub block engaging teeth 441,442. As described above, two hub block engaging teeth 441 and 442 are formed in the present invention, which is configured to be loaded by varying the interval between the retreat and the retreat forward in order to control the size of the collected tissue. This will be described later. In addition, the hub block engaging teeth 441 and 442 are described as referring to the concave teeth as shown in the above drawings, but any form may be used as long as it is a form for performing a function of the configuration of the present invention.

On the other hand, as can be seen in the drawing, the first direction inclined portion 4412 has an inclination close to a right angle, and the second direction inclined portion 4411 has a gentle inclination. As described above, the force applied according to the movement of the loading connector 52 in the second direction D2 is completely transmitted to the hub block 40, so that the hub block 40 has the first spring 50 and the second spring. This is to move while overcoming the restoring force of (60).

In addition, when the loading connector 52 is in contact with the second direction side inclined portion 4411 during a plurality of loading, the second direction side inclined portion 4411 has a smooth inclination so that the movement of the loading connector 52 is not restricted. It will be configured to have.

5, 11, 12, 13, and 17, one end side 511 of the loading handle 51, which is one configuration constituting the loading unit, is connected to the hinge portion 17 of the housing 10. The other end side 512 is hinge-fixed, and the other end side 512 is not opened, i.e., fixed, to the housing 10, which is hinged to the housing 10, that is, one end side 511. 512 includes a first elastic body (not shown) that provides an opening force so as to be spaced apart from the housing 10.

Through this, unless the movement is inhibited by the toggle locking devices 16 and 513 to be described later, the loading handle 51 is rotated so as to be spaced apart from the housing 10 about one end side 511, thereby the other end side 512 ) Is kept at maximum distance from the housing 10. On the other hand, the hinge connection portion connected to the housing 10 at one end side 511 of the loading handle 51 further includes a locking member (for example, a tooth, etc.), and the loading handle 51 is provided with a housing (more than necessary). It is possible to prevent the phenomenon occurring from 10), so that the short side of the loading connector is correctly caught by the hub block engaging teeth 441 and 442 as described below.

On the other hand, as for the loading connector 52 which is another structure which comprises a loading unit, one end side 521 is hingedly fixed to the one area | region between both end sides of the loading handle 51, and the other end side 522 is a hub block latching tooth. The opening connector 52 is installed at the portion fixed to the loading handle 51 in the restrained direction, similar to the loading handle 51 described above in the restored state. The other end side of the loading connector 52 includes a second elastic body (not shown) that provides a gaping force so as to be spaced apart from the loading handle 51 and engaged with the hub block locking teeth 441 and 442.

Through this, unless the movement is suppressed by the toggle locking devices 16 and 513 to be described later, the loading connector 52 is spaced apart from the loading handle 51 about the one end side 521, the other end side 522. The loading handle 51 is kept in the maximum spaced apart state. On the other hand, at one end side 521 of the loading connector 52, that is, the hinge connection portion with the loading handle 51, similarly to the hinge connection portion at the one end side 511 side of the loading handle 51, the engaging member (for example, the teeth Etc.) to prevent the loading connector 52 from opening from the loading handle 51 more than necessary, so that the end side 522 of the loading connector 52 is connected to the hub block engaging teeth 441, as described later. 442 can be accurately locked.

Meanwhile, referring to FIGS. 1, 12, 13, and 15, the loading connector catching jaw 101 is formed in the housing. The loading connector catching jaw 101 is formed to connect the outside of the housing 10 and the hollow portion 11, but is loaded to guide the area where the hub block catching teeth 441 and 442 and the loading connector 52 are engaged. A protrusion formed on one end side of the unit guide portion 102, wherein the loading connector 52 moves in the second direction D2 by the hinge movement of the mechanism described above by the pressing force applied to the loading handle 51. In this case, the loading connector 52 is configured to be spaced apart from the hub block engaging teeth 441 and 442.

At this time, the loading connector latching jaw 101 is configured to be hooked to the loading connector blade 523. When a pressing force is applied to the loading handle 51, the other end side 522 of the loading connector 52 provides a force to push and move the hub block 40 in the second direction D2. At this time, the position of the hub block engaging teeth 441 and 442 formed in the hub block 40, the position where the second locking point 421 of the hub block locking portion 42 is strongly engaged with the second locking portion 14. It moves a little further in the second direction D2, where the loading connector blade 523 comes into contact with the loading connector catching jaw 101 so that the loading connector 52 is spaced apart from the hub block catching teeth 441 and 442. Is moved in the direction. At this time, when the loading handle 51 is pushed to the maximum, the other end side 522 of the loading connector 52 is spaced apart from the hub block engaging teeth 441 and 442 so that the locking is released.

In such a state, the hub block 40 is moved forward slightly in the first direction D1 to be securely caught by the second locking portion 14.

5, 11, 12, 13, and 15, as the pressing force is applied to the loading handle 51, the other end side 512 of the loading handle 51 is connected to the housing 10. When contacted, the locking and unlocking states are toggled according to the pressing force applied, and toggle locking devices 16 and 512 may be provided to control the coupling of the loading handle 51 and the housing 10.

In other words, the toggle locking devices 16 and 512 have a structure in which the device 512 on the loading handle 51 side and the device 16 on the housing 10 side are combined as described above, and are pressed by the loading handle 51. As it is applied to the maximum contact with the housing 10, when the pressing force is removed, the toggle is locked with a slight gap open, the pressing force is applied again and removes means a configuration that is released.

In the meantime, the loading connector accommodating groove 514 is recessed in the loading handle 51 to move the loading connector 52 according to the loading connector catching jaw 101 by the loading connector catching jaw 101. Can be. As the loading connector 52 is received by the loading connector catching jaw 101 while being received in the loading connector accommodating groove 514, the loading connector 52 becomes a hub block catching teeth 441, 442 when the hub block 40 is moved. ) Can be prevented.

Meanwhile, referring to FIG. 17, the loading handle and the loading connector may be configured in various ways. Referring to FIG. 17A, the loading handle 51 has one end side 511 hinged to the housing 10, and the loading connector 52 has one end side 521. ) Is hinged to the loading handle 51, the other end side 522 is in contact with the hub block engaging teeth 44 of the hub block (40). Accordingly, the loading is performed to drive the master block 30, the first spring 50, the hub block 40, and the second spring 60.

Meanwhile, referring to FIG. 17B, unlike FIG. 17A, one end side 531 of the loading handle 53 in the second direction D2 is hinged to the housing 10 and loaded. One end 541 of the connector 54 is hinged to the loading handle 53, and the other end 542 is in contact with the hub block engaging teeth 44 of the hub block 40. Accordingly, the loading is performed by the force in the opposite direction to FIG. 17 (a) to drive the master block 30, the first spring 50, the hub block 40 and the second spring 60.

Referring to FIG. 17C, unlike FIG. 17A and FIG. 17B, one end side 551 of the loading handle 55 in the second direction D2 is the same as that of FIG. 17B. Although hinged to the housing 10, the loading connector 56 includes a first sub connector 561 and a second sub connector 562. The first direction D1 of the first sub connector 561 has a short side 563 hinged to the housing 10 and the other short side 564 is connected to the second sub connector 562 to the loading handle 55. The other end side 565 of the second sub-connector 562 is in contact with the hub block engaging teeth 44 of the hub block 40. Of course, as in FIG. 17B, a long power is applied.

Referring to the drawings described above with reference to FIGS. 15 and 16, it can be seen that at least two hub block engaging teeth 441 and 442 and the second engaging portion 14 are formed to have the same width.

In this case, referring first to FIG. 15, when a loading force is applied to the loading handle 51, one loading time in the default state S7, that is, when the first pressing force is applied to the loading handle 51, a loading connector The other short side of 52 applies the force in the second direction D2 to the first tooth 441 in the second direction D2 in order to load the hub block 40 in accordance with the above-described moving mechanism while the hub block 40 is moved. When the lock is released while the gap is opened by the toggle locking devices 16 and 513 in the steps S8 and S9 holding the handle 51 to the maximum, the first second locking part (D2) In the first direction D1, the engaging portion 14 is locked to a state S10.

Referring to FIG. 16, when the loading handle 51 is squeezed to the maximum in S10 and the pressing force is removed, the other end side of the loading connector 52 is in the second direction (S11 in FIG. 16). D2) While sliding in contact with the side inclined portion, the second teeth (442) in the second direction (442) in the first direction (D1) side inclined portion is engaged, the pressing force is applied to the loading handle 51, S12 And according to the flow of state S13. The other end side of the loading connector 52 exerts a force in the second direction D2 on the second teeth 442 in the second direction D2, so that the hub block 40 is placed in the second direction. It becomes the state (S14) which is locked by the 2nd direction D2 side latch part of the 2nd 2nd latch part 14

As described above, in the present invention, by repeatedly pressing the loading handle 51 by the above-described structure, the retreat distance of the outer cover 21 can be easily controlled with one hand, so that a small amount and a large amount of sampling can be easily adjusted.

5 and 15, an open loading state confirmation window 122 is formed in one region of the housing 10, and the position of the hub block in one loading and two loading states of the outer surface of the hub block 40. In the region corresponding to the loading state confirmation window 122, the loading state marking portion 43 that can check the number of loading is formed.

In particular, referring to Figure 15, as the loading is repeated by performing the above-described function, the loading state such as 0, 1, 2, etc. is exposed through the loading state confirmation window 122, so that the operator can check the loading state have.

5, 9, 10, and 13, it can be seen that the master block 30 includes an outer shell connecting bar 33 to which the outer shell 21 is fixed. Outer connecting bar 33 is a space formed in the master block 30, the outer connecting bar 33 in the first or second direction (D1, D2) along the sliding space 333 in which the sliding direction is guided sliding It is moved together with the shell 21.

The outer surface connection bar guide portion 121 extends from the outer surface connection bar 33 and opens to an area of the housing 10 to guide the movement of the outer surface connection bar 33 for the above-described movement. The outer casing bar operating part 331 is formed to protrude out of the housing 10 to apply a moving force to the outer casing bar 33.

In addition, the outer connecting bar locking device 332 is formed between the outer connecting bar operating part 331 and the outer connecting bar 33. The outer connecting bar locking device 332 is specifically, in the default state, the narrowest opening 334 of the openings opened on the side of the outer surface of the sliding space 333 as shown in FIG. 9 is the outer connecting bar 33. ), While pressing the outer cover bar operating portion 331, the outer cover bar connecting device 33 through the narrowest opening 334 as the outer cover bar locking device is matched to the narrowest opening 334. ) Is set to move in the second direction D2 or the first direction D1. Thereby, it is controlled that the meter reading bar 33 is relatively moved with respect to the master block 30 in accordance with the operation of the outer cover bar operating part 331. Pulling while pressing while pressing the outer connection bar operation part 331 is pulled while the lock is released, and pushed forward again to move forward while being locked by the opening part 334 by its elasticity to maintain the locked state. To this end, at least one of the outer surface connection bar 33, the outer surface connection bar operating portion 331 and the outer surface connection bar locking device 332 may be made of a material having an elastic force in the pressing direction.

Referring to FIG. 14, there is shown an operational flow of a disposable cutting biopsy instrument in accordance with one embodiment of the present invention having the above-described structure.

The step S1 is a ready state, and the loading handle 51 is prepared so as to be spaced apart from the housing as the state just before the loading progress, which is the step S2, and the loading connector 52 is caught by the hub block engaging teeth 441 and 442. Then, as the state enters S3, a pressing force is applied to the loading handle 51, and according to the hinge movement mechanism, the loading connector 52 has a force in the second direction D2 on the hub block engaging teeth 441 and 442. The hub block 40 is moved in the second direction D2 by a predetermined distance a so as to be in the loading completion state. At this time, since the movement of the master block 30 is suppressed by the firing unit, the restoring force is applied to the first spring 50 while being spaced apart from the master block 30 and the hub block 40 by the predetermined distance a. Will occur.

Thereafter, when pressing forces P1 and P2 are applied to the firing units 181 and 191, the first firing stage S4 is performed. That is, when the pressing force (P1, P2) is applied to the firing units (181, 191), the pressing force is applied to the master block locking portion 31 and the locking with the first locking portion 13 is released by the above-described mechanism. Accordingly, the master block 30 is moved in the second direction D2 by a predetermined distance b by the restoring force of the first spring 50.

When the step S4 is completed, the second firing stage S5 proceeds. That is, as the master block 30 is moved in the second direction D2, the hub block locking release unit 32 applies a pressing force to the hub block locking portion 42 to move the hub block locking portion 42. To release the locking with the second locking portion 14. As a result, the hub block 40 moves the master block 30 in the first direction D1 by the predetermined distance c while pushing the master block 30 in the first direction D1, and as a result, the outer cover 21 is removed again. Moving in one direction (D1) to cut the tissue to be accommodated in the tissue collection groove 202 of the inner ear 20.

Each of the preset distances a, b, and c described above is preferably the same in the present invention, but it may be understood that some errors occur in performing the functions of the present invention, so that a, b, and c may be set differently. have.

Thereafter, the tissue recovery stage S6 described above proceeds. In other words, the outer connecting bar 33 is moved without moving the master block 30 and the hub block 40 on the master block 30 by the above-described operation mechanism, and the retreat movement of the outer cover 21, the puncture 20 The tissue collection groove 202 is exposed to recover the tissue. After that, the process may return to step S1 again to enable repeated sampling.

Although the embodiments have been described by the limited embodiments and the drawings as described above, various modifications and variations are possible to those skilled in the art from the above description. For example, the described techniques may be performed in a different order than the described method, and / or components of the described systems, structures, devices, circuits, etc. may be combined or combined in a different form than the described method, or other components. Or even if replaced or substituted by equivalents, an appropriate result can be achieved. Therefore, other implementations, other embodiments, and equivalents to the claims are within the scope of the claims that follow.

10: housing
20: Cheating
21: Outer
30: master block
40: hub block
50: first spring
60: second spring

Claims (19)

A housing extending in a direction parallel to one axis and having a hollow portion formed therein;
The inner needle is inserted into the housing through the first directional short side hole of the housing and has a tissue collecting groove formed therein, and a blade is formed at the tip to cut the tissue accommodated in the tissue collecting groove. A needle set including a needle tube formed with a needle tube reciprocating relative to the inner needle;
The length of the direction parallel to the one axis is formed longer than the length of the direction orthogonal to the one axis, connected to the short side of the outer surface in the second direction opposite to the first direction and the one axis; A master block arranged to reciprocate in a direction parallel to the one axis in the hollow part;
The first and second springs are arranged in a row and connected in series to the hollow part, and a first spring provided to provide elastic force to at least the master block, and a needle set through part provided to at least pass the needle, are formed so as not to be coupled with the needle set. A drive unit comprising a fixed hub block and a second spring provided to provide elastic force to at least the hub block;
The hub block is moved in the second direction in a state in which the latching position of the hub block is variable and the master block is suppressed from moving in the second direction due to the suppression of the elastic force by the first spring. A loading unit including a loading connector provided to load the hub block in a state in which the elastic force by the second spring is suppressed, and a loading handle connected to the loading connector to apply a force in the second direction to the loading connector; And
A firing unit installed to be inserted into the hollow portion outside the housing and configured to release the restrained state of the master block to move the master block in a second direction by an elastic force of the first spring; Disposable cutting biopsy instrument comprising a. The method of claim 1,
The first spring is installed to connect and couple between the master block and the hub block as a tension spring, the second spring is installed to connect and couple the hub block and the second direction short side of the hollow portion as a compression spring. A disposable cutting biopsy instrument. The method of claim 1,
The first spring is installed as a compression spring to connect the first direction short side and the master block of the hollow portion, and the second spring is a compression spring having a greater restoring force than the first spring and the hollow block and the hollow. And the master block and the hub block are installed to be coupled to each other in the second direction short side of the unit. The method of claim 1,
The housing,
Is formed on one surface of the hollow portion, the first engaging portion for suppressing the movement of the master block during loading; And
The second cutting portion is formed on the other side of the hollow portion, and for fixing the hub block moved in the second direction after loading; Disposable cutting biopsy mechanism further comprises. The method of claim 4, wherein
The master block,
The master block is formed in an area corresponding to the first locking portion of the master block, and a default state, which is a state of loading and firing completion, is disposed to hook the first locking portion to move the master block in the second direction. When the firing unit is pressed and moved in the direction in which the firing unit is inserted, the state caught in the first catching part is released, and the master block is removed by the elastic restoring force of the first spring. A master block engaging portion which is an elastic body which moves in two directions and moves the firing unit toward the outside of the housing while returning to the default state after the firing is completed;
And a hub block locking release unit formed in the second direction short-side area of the master block, the hub block locking release unit being formed in a bar shape to release the state in which the hub block is fixed to the second locking portion. Cutting biopsy instruments. The method of claim 1,
The firing unit,
A first firing unit installed to reciprocate in a direction inserted into the hollow part from an upper surface of the housing; And
And a second firing unit inserted into the hollow portion along a guide line formed in the hollow portion at the second side end side of the housing and installed to reciprocate in the one axial direction. . The method of claim 5,
The master block engaging portion,
A first catching point that is an area caught by the first catching part in the default state; And
A first pressing point for transmitting the pressing force when the firing unit is pushed and moved in the direction inserted into the hollow part to release the first catching point from the first catching part; Cutting biopsy instruments. The method of claim 5,
The hub block,
The state in which the loaded state is arranged to be caught by the second engaging portion is a state in which the hub block is prevented from moving in the first direction, and the hub block engaging release is released as the hub block locking release unit moves in the second direction. And a hub block catching portion which is an elastic body that is released from the second catching portion by the pressing force applied by the unit so that the hub block moves in the first direction by the elastic restoring force of the second spring. A disposable cutting biopsy instrument. The method of claim 8,
The hub block locking portion,
A second catching point that is an area caught by the second catching part in the loaded state; And
And a second pressing point for transmitting the pressing force applied by the hub block locking release unit to release the second locking portion from the latching state with the second locking portion. The method of claim 1,
The master block and the hub block is a disposable cutting biopsy mechanism, characterized in that each of the spring receiving portion for receiving the first or second spring connected adjacently recessed. The method of claim 1,
A disposable absorbing biopsy instrument, characterized in that a shock absorbing plate is formed on at least one end side of the master block and the hub block in the one axial direction. The method of claim 1,
The hub block,
And a sawtooth-type hub block engaging tooth having a first directional inclined portion caught by the loading connector and a second directional inclined portion opposite to the first directional inclined portion. . The method of claim 12,
The loading handle,
One end is hinged to the housing, the other end is open, and the hinged portion to the housing is provided with a first opening that provides the opening force so that the other end of the loading handle is spaced apart from the housing while the loading handle is in a restored state. It includes an elastic body;
The loading connector,
One end side is hinged to an area between both ends of the loading handle, and the other end is openly installed in the direction of engagement with the hub block engaging teeth, and the loading connector is restored to the hinge fixing portion of the loading handle. And a second elastic body provided with an opening force such that the other end side of the loading connector is spaced apart from the loading handle and engaged with the hub block engaging teeth in a state. The method of claim 13,
The housing,
Is formed to connect the outside of the housing and the hollow portion, the protrusion formed on any one side of the loading unit guide portion for guiding the area where the hub block engaging teeth and the loading connector is engaged, wherein the loading connector is loaded Disposable connector comprising a; loading connector engaging jaw to be spaced apart from the hub block engaging teeth when the loading connector is moved to the second direction by the hinge movement by the pressing force applied to the handle, Cutting biopsy instruments. The method of claim 4, wherein
The hub block,
And a hub block engaging tooth having a plurality of teeth having a first direction side inclined portion caught by the loading connector and a second direction side inclined portion opposite to the first direction side inclined portion.
At least two or more hub block engaging teeth and the second engaging portion are formed to have the same width,
As the pressing force is applied to the loading handle, the other end side of the loading connector applies the force in the second direction to the first tooth in the second direction in the second direction during the single loading. In order to be locked to the first second latching portion, and the pressing force is removed from the loading handle to restore the state, while the other end side of the loading connector slides on the inclined portion of the second direction side in the second direction order. The second tooth is engaged with the first direction side inclined portion, and a pressing force is applied to the loading handle so that the other end side of the loading connector is second in the second tooth in the second direction in the second direction during the second loading. Disposable, characterized in that the hub block is fixed to the second engaging portion in the second direction in order to apply a force of the Cutting biopsy instruments. The method of claim 1,
An open loading state confirmation window is formed in one region of the housing, and the outer surface of the hub block is marked in an area corresponding to the loading state confirmation window at the position of the hub block in a ready state and a loading state, so that the loading Disposable cutting biopsy device, characterized in that the loading state marking portion is formed through the status confirmation window to check the loading state information. The method of claim 13,
When the other end of the loading handle is in contact with the housing as a pressing force is applied to the loading handle, the locked and released state is toggled according to the pressing force applied to control the engagement of the loading handle and the housing. Toggle locking device; Disposable cutting biopsy device further comprising. The method of claim 1,
The master block,
An outer shell connecting bar to which the outer shell is fixed; And
And a sliding space in which the outer connecting bar slides while the movement direction is guided.
The outer connecting bar extends from the outer connecting bar and opens to an area of the housing to protrude out of the housing through an outer connecting bar guide part for guiding the movement of the outer connecting bar to apply a moving force to the outer connecting bar. The overlying connection bar control part is formed so that
An outer surface connection bar locking device is formed between the outer surface connection bar operating unit and the outer surface connection bar, and the outer surface connection bar is controlled to move relative to the master block according to the operation of the outer surface connection bar locking device. Disposable cutting biopsy instruments. The method of claim 1,
The master block,
Disposable cutting biopsy instrument, characterized in that moved in close contact with the hollow portion of the housing.

Images