KR102668868B1 - Core biopsy device - Google Patents

Abstract

One embodiment of the present invention relates to a cutting biopsy device that can improve the collection efficiency, further improves the accuracy of tissue collection, further increases safety during collection, and improves the tissue collection efficiency. It's about the mechanism.

Description

Core biopsy device {Core biopsy device}

Embodiments of the present invention relate to cutting biopsy instruments.

In general, for the examination of biological tissue, a method is used to inject a device capable of sampling biological tissue into the biological tissue and collect the tissue to be sampled from among the biological tissue. These types include aspiration biopsy and excision biopsy.

Recently, excision biopsy has been widely used, as it can obtain tissue with its histological form intact by cutting the tissue using the shape of a needle and can increase diagnostic accuracy. In the case of excision biopsy, it has been used more recently than aspiration biopsy because it minimizes the diameter of the needle inserted into the affected area, minimizes repetitive invasion, and allows precise procedures on small specimens.

Because the tissue to be collected has blood vessels or other tissues around it and/or in the path through which the biopsy needle penetrates, the operator must be very careful.

Therefore, it is necessary to ensure that the biopsy instrument used for biopsy can be operated comfortably while allowing the operator to feel as stable as possible during the procedure.

However, conventional biopsy instruments have a problem in that the operator has to fit the instrument rather than considering the operator's ease of use, making it difficult to provide a sense of stability in the procedure. In addition, depending on the device, the firing force was too strong, making it difficult to use in dangerous areas.

Republic of Korea Patent Publication No. 10-2014-0106062 (2014.09.03)

Embodiments of the present invention are intended to solve the above problems, and can provide a cutting biopsy instrument that can improve user convenience and provide a sense of stability to the operator.

Additionally, the present invention can provide a cutting biopsy instrument that allows the operator to accurately and safely collect tissue through simple operation.

One embodiment of the present invention includes an inner needle having a tissue collection groove, and an outer needle that is shorter than the inner needle, covers the inner needle, and is provided to move along the longitudinal direction of the inner needle to selectively open and close the tissue collection groove. , a needle set, a housing having an inner space inside such that at least one region of the needle set is disposed, and the housing is accommodated in the housing and is coupled to one end of the outer needle portion so that the inner needle portion penetrates and moves along the longitudinal direction of the housing. A first block provided, a second block accommodated in the housing, coupled to one end of the inner needle, and provided to move in parallel with the direction of movement of the first block, and a first spring that provides elastic force to the first block and a spring unit including a second spring that provides elastic force to the second block, a first handle unit provided to selectively drive at least one of the first block or the second block, and the first block or a second handle unit provided to fix at least one of the second blocks, wherein the first handle unit independently drives at least one of the first block or the second block, A cutting biopsy instrument can be provided, characterized in that a two-stage loading state can be driven by moving one block to a first position and moving the second block to a second position in a second state.

According to one embodiment, the first handle portion is provided to move along the longitudinal direction of the housing and includes a first locking portion that is selectively coupled to the first block, and is provided to move along the longitudinal direction of the housing. It may include a second locking portion selectively coupled to the second block.

According to another embodiment, the second locking portion includes a step portion protruding in one direction perpendicular to the axial direction, and the second locking portion selectively penetrates the second block or the step portion depending on the driving of the first handle portion. It can be combined with one end of the second block by means of a part.

According to another embodiment, the second engaging portion may further include a sliding portion located adjacent to the step portion, and the second engaging portion may be provided to penetrate the second block through the sliding portion.

According to another embodiment, the second handle part is provided on the side of the housing and may include a first fixing part that selectively fixes the first block in the first position.

According to another embodiment, the second handle part may be provided on a side of the housing and may further include a second fixing part that selectively fixes the second block in the second position.

According to another embodiment, the second handle unit may release the coupling of the second block and the second fixing part and the coupling of the first block and the first fixing part by a pressing force.

According to another embodiment, the spring unit may further include a third spring that provides elastic force to the first handle unit.

According to another embodiment, the device may further include a third handle portion located adjacent to the second handle portion and capable of switching the cutting biopsy instrument to a locked state.

Other aspects, features and advantages in addition to those described above will become apparent from the following drawings, claims and detailed description of the invention.

The cutting biopsy instrument according to embodiments of the present invention can collect tissue while maintaining a stable grip state through simple operation.

Additionally, the user can change the gripping state of the housing to suit his or her preference, thereby allowing the biopsy procedure to be performed more safely.

In addition, accurate tissue cutting is possible because a light firing action can be performed while the tissue collection groove is accurately inserted into the tissue area to be harvested.

Figure 1 is a perspective view disclosing a cutting biopsy instrument according to one embodiment.
Figure 2 is a cross-sectional view of the cutting biopsy instrument of Figure 1.
FIG. 3 is a cross-sectional view showing the housing of the cutting biopsy instrument of FIG. 1.
FIG. 4 is a diagram illustrating a first block of the cutting biopsy instrument of FIG. 1.
FIG. 5 is a diagram illustrating a second block of the cutting biopsy instrument of FIG. 1.
FIG. 6 is a diagram illustrating the first handle portion of FIG. 1.
Figure 7 is an enlarged view of part A of Figure 2.
Figures 8a and 8b are diagrams schematically showing the operation sequence of a cutting biopsy device according to an embodiment.
Figure 9 is a perspective view showing a cutting biopsy instrument according to another embodiment.
Figure 10 is a cross-sectional view of the cutting biopsy instrument of Figure 9.

Since the present invention can be modified in various ways and can have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. The effects and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various forms.

In the following embodiments, terms such as first and second are used not in a limiting sense but for the purpose of distinguishing one component from another component.

In the following examples, singular terms include plural terms unless the context clearly dictates otherwise.

In the following embodiments, terms such as include or have mean the presence of features or components described in the specification, and do not exclude in advance the possibility of adding one or more other features or components.

In the following embodiments, when a part of a unit, area, component, etc. is said to be on or on another part, it is not only the case where it is directly on top of the other part, but also when other units, areas, components, etc. are interposed between them. Also includes cases.

In the following embodiments, terms such as connect or combine do not necessarily mean a direct and/or fixed connection or combination of two members, unless the context clearly indicates otherwise, and do not mean that another member is interposed between the two members. It's not exclusion.

In the drawings, the sizes of components may be exaggerated or reduced for convenience of explanation. For example, the size and thickness of each component shown in the drawings are shown arbitrarily for convenience of explanation, so the present invention is not necessarily limited to what is shown.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. When describing with reference to the drawings, identical or corresponding components will be assigned the same reference numerals and redundant description thereof will be omitted. do.

FIG. 1 is a perspective view showing a cutting biopsy instrument 1 according to an embodiment, and FIG. 2 is a cross-sectional view of the cutting biopsy instrument 1 of FIG. 1 . FIG. 3 is a cross-sectional view showing the housing of the cutting biopsy device of FIG. 1, FIG. 4 is a view showing the first block of the cutting biopsy device of FIG. 1, and FIG. 5 is a view showing the second block of the cutting biopsy device of FIG. 1. It is a drawing, and FIG. 6 is a drawing showing the first handle part of FIG. 1. Figure 7 is an enlarged view of part A of Figure 2.

1 to 7, the cutting biopsy instrument 1 of this embodiment includes a housing 11, a needle set 12, a first block 13, a second block 14, and a first handle portion 15. ), a second handle portion 16, and a spring portion 17.

The cutting biopsy instrument 1 of this embodiment can be configured to operate on a biopsy target and can perform harvesting of necessary tissue with respect to the biopsy target.

The needle set 12 may include an outer needle portion 121 and an inner needle portion 122 that overlap each other.

The needle set 12 can penetrate the epidermis of the biopsy target and collect tissue. For example, the needle set 12 may move in the first direction D1 and penetrate the epidermis of the biopsy target.

The outer needle unit 121 is disposed outside the inner needle unit 122. For example, the inner diameter of the outer needle unit 121 may be the same as or larger than the outer diameter of the inner needle unit 122.

The outer needle unit 121 may be disposed outside the inner needle unit 122 and move along the longitudinal direction of the inner needle unit 122, for example, in the first direction D1 or the second direction D2.

For example, the outer needle part 121 is formed in the shape of a pipe to accommodate the inner needle part 122 therein, and may be formed to have a shorter length than the inner needle part 122.

According to one embodiment, the end of the outer needle 121 in the second direction D2 may be coupled to the first block 13. Therefore, the outer needle 121 can be linked to the movement of the first block 13.

Referring to FIG. 5, the inner needle unit 122 has a cutting surface 1221 located at the end in the first direction (D1) and a tissue collection groove 1222 located adjacent to the cutting surface 1221 in the second direction (D2). may include. The tissue collection groove 1222 of the inner needle unit 122 can be selectively opened and closed by the outer needle unit 121 according to the relative movement of the inner needle unit 122 and the outer needle unit 121. That is, the tissue collection groove 1222 may or may not be covered with the outer needle 121 depending on the movement of the inner needle 122 and the outer needle 121.

This tissue collection groove 1222 may have a groove structure open toward the upper or lower side.

The inner needle unit 122 may be arranged to penetrate the housing 11 in the axial direction (D). According to one embodiment, the end of the inner needle unit 122 in the second direction D2 may be fixed to the second block 14.

As an optional embodiment, the outer needle 121 has a cutting surface 1211 formed at one end to cut the tissue accommodated in the tissue collection groove 1222 of the inner needle 122, and reciprocates with respect to the inner needle 122. It may be provided to do so. The cutting surface 1211 of the outer needle part 121 may be inclined in a different direction from the cutting surface 1221 of the inner needle part 122, but is not necessarily limited to this, and the blade 1221 of the inner needle part 122 It may be provided to have an inclination in the same direction as.

This needle set 12 passes through the housing 11 and protrudes outward through the second opening 112 at the distal end of the housing 11.

The housing 11 may be a case for maintaining the durability of the cutting biopsy instrument 1 and may include a placement space therein.

Referring to FIG. 2, at least one area of the needle set 12 may be disposed in the interior space of the housing 11.

As can be seen in FIGS. 1 and 2, the housing 11 may have a structure extending in the axial direction (D), and a first handle portion 15 is provided at an end of the housing 11 in the second direction (D2). may be positioned so that the second handle portion 16 is exposed on one side of the housing 11. The length of the housing 11 may be long enough for the user to hold it with one hand. The user can perform loading and/or collecting operations by holding the body of the housing 11 with one hand and pulling the first handle portion 15 with the other hand. After loading is completed, the user can hold the body of the housing 11 with one hand and then perform a firing operation by pressing the second handle portion 16 during the procedure. At this time, since the second handle part 16 is located in front of the side of the housing 11, the user holds the housing 11 as if holding a pencil and presses the second handle part 16 with the index finger to perform a firing operation. can do. Optionally, the user may perform a firing operation by pressing the second handle portion 16 with the thumb while holding the housing 11. In this way, the user can perform the procedure after holding the housing 11 in a pose that is comfortable for him or her.

As can be seen in FIG. 3, the housing 11 has a first opening 111 formed on the upper side, a second opening 112 formed at an end in the first direction D1, and a third opening 112 formed at an end in the second direction D2. It may include an opening 113. The second handle portion 16 is exposed to the outside through the first opening 111, the needle set 12 is exposed through the second opening 112, and the first handle is exposed through the third opening 113. Part 15 is exposed.

The housing 11 may include a first fixed end 1111 and a second fixed end 1112 located adjacent to the first opening 111. The first fixed end 1111 may be located at an end of the first opening 111 in the first direction (D1), and the second fixed end 1112 may be located at the end of the first opening 111 in the second direction (D2). It may be located at the end. The second handle portion 16 can be positioned within the housing 11 by the first fixed end 1111 and the second fixed end 1112 and does not deviate outside the first opening 111.

A first shaft coupling portion 1141 and a second shaft coupling portion 1142 may be located adjacent to the first opening 111 within the housing 11 .

The first shaft coupling part 1141 may be located adjacent to the center of the first opening 111, and as can be seen in FIG. 2, the first fixing part 161 can be coupled thereto. The first rotation axis 1611 of the first fixing part 161 is coupled to the first axis coupling part 1141, and the first fixing part 161 can be rotated around the first rotation axis 1611. Although not shown in the drawing, a spring coupled to the first fixing part 161 may be further coupled to the first shaft coupling part 1141, and thus the first fixing part 161 is maintained in a state with elastic force. 2 The fixing part 162 can be supported. The spring may be a torsion spring.

The second shaft coupling portion 1142 is located inside the housing 11 close to the second fixed end 1112. The second fixing part 162 may be coupled to the second shaft coupling part 1142. The second rotation axis 1621 of the second fixing part 162 is coupled to the second axis coupling part 1142, and the second fixing part 162 can be rotated around the second rotation axis 1621.

The second handle unit 16 may be formed by the first fixing part 161 and the second fixing part 162. A detailed description of this will be provided later.

Inside the housing 11, a first partition wall 115 extending along the axial direction D is located. The first partition 115 extends in the axial direction D along approximately the center of the housing 11 and divides the interior of the housing 11 in the vertical direction of the drawing. As can be seen in FIG. 2, the first block 13 and the second block 14 are arranged in one divided region, and the second handle portion 16 is coupled to the other region. The first partition 115 may serve as a guide rail for movement of the first block 13 and the second block 14 in the axial direction (D).

A first window 1151 and a second window 1152 may be formed in this first partition 115, and the first window 1151 is provided to allow a part of the first fixing part 161 to enter and exit, The second window 1152 may be provided to allow a portion of the second fixing part 162 to enter and exit. In this way, the first block 13 and the second block are formed by the parts of the first fixing part 161 and the second fixing part 162 that enter the lower guide rail area through the first window 1151 and the second window 1152. (14) can be supported.

In the guide rail area defined by the first partition 115, a plurality of partition walls may be installed in a direction perpendicular to the axial direction D to divide the area. For example, the first vertical partition 1171, the second vertical partition 1172, the third vertical partition 1173, and the fourth vertical partition are sequentially formed from one end in the first direction D1 to the end in the second direction D2. 1174 and a fifth vertical partition 1175 may be disposed.

2 and 3, within the first guide area 1181 defined between the second vertical partition 1172 and the third vertical partition 1173, the first block 13 moves in the axial direction (D). You can exercise. And the second block 14 can move in the axial direction (D) within the second guide area 1182 defined between the fourth vertical partition 1174 and the fifth vertical partition 1175.

According to one embodiment, a first horizontal partition 1161 extending in the axial direction (D) is disposed in the second direction D2 within the first guide area 1181, and accordingly, the first guide area 1181 ) becomes narrow from the point where the first horizontal partition 1161 is installed from the first direction D1 to the second direction D2. A first spring 171 coupled to the first block 13 is disposed in the first guide area 1181 narrowed by the first horizontal partition 1161, and the first spring 171 is connected to the first horizontal partition 1161. It is located within the area defined by 1161 so that it does not bounce when the first spring 171 is compressed.

According to one embodiment, the first spring 171 is located within the area defined by the first block 13, the third vertical partition 1173, and the first horizontal partition 1161 within the first guide area 1181. can be located One end of the first spring 171 may be fixed to the first block 13, and the other end may be fixed adjacent to the third vertical partition 1173.

The first block 13 can be stopped from moving in the first direction D1 by the second vertical partition 1172 within the first guide area 1181, and is located at the end of the first horizontal partition 1161. Movement in the second direction D2 may be stopped.

According to one embodiment, a second horizontal partition wall 1162 extending in the axial direction D is disposed in the second direction D2 within the second guide area 1182, and accordingly, the second guide area 1182 ) becomes narrow from the point where the second horizontal partition 1162 is installed from the first direction D1 to the second direction D2. A second spring 172 coupled to the second block 14 is disposed in the second guide area 1182 narrowed by the second horizontal partition 1162, and the second spring 172 is connected to the second horizontal partition 1162. It is located within the area defined by 1162 so that it does not bounce when the second spring 172 is compressed.

According to one embodiment, the second spring 172 is located within the area defined by the second block 14, the fifth vertical partition 1175, and the second horizontal partition 1162 within the second guide area 1182. can be located One end of the second spring 172 may be fixed to the second block 14, and the other end may be fixed adjacent to the fifth vertical partition 1175.

The second block 13 may be stopped from moving in the first direction D1 by the fourth vertical partition 1174 within the second guide area 1182, and is located at the end of the second horizontal partition 1162. Movement in the second direction D2 may be stopped.

A first guide groove 1176 is formed in the first vertical partition 1171 and the second vertical partition 1172, and a second guide groove is formed in the third vertical partition 1173 and the fourth vertical partition 1174 ( 1177) is formed, and a third guide groove 1178 may be formed in the fifth vertical partition 1175. The first locking portion 153 of the first handle portion 15 is guided by the first guide groove 1176, and the second locking portion of the first handle portion 15 is guided by the second guide groove 1177. (154) can be guided. The third guide groove 1178 may guide the extension portion 152 of the first handle portion 15.

According to one embodiment, the first vertical partition 1171 and the second vertical partition 1172 may be formed as a single vertical partition, and the third vertical partition 1173 and the fourth vertical partition 1174 may also be formed as a single vertical partition. It can be formed as a partition wall.

Meanwhile, a third spring 173 may be further positioned in the area between the first vertical partition 1171 and the second opening 112, as shown in FIG. 2. One end of this third spring 173 is fixed in the housing and the other end is fixed to the first locking part 153 of the first handle part 15, so that the first handle part 15 can be elastically restored to its original position. . According to one embodiment, one end of the third spring 173 may be fixed to the second coupling portion 1192 of the housing 11. The housing 11 may be assembled by installing a first coupling portion 1191, a second coupling portion 1192, and a third coupling portion 1193 at both ends in the axial direction (D), respectively.

According to one embodiment, the spring unit 17 includes a first spring 171 coupled to the first block 13 to provide elastic force, and a second spring coupled to the second block 14 to provide elastic force ( 172), and may optionally further include a third spring 173 coupled to the first handle portion 15 to provide elastic force.

4 and 5 are diagrams showing the first block 13 and the second block 14 according to one embodiment.

The outer needle part 121 may be coupled to the first block 13, and the inner needle part 122 may be coupled to the second block 14. Since the first block 13 is located within the first guide area 1181 of the housing 11 and the second block 14 is located within the second guide area 1182 of the housing 11, the inner needle unit 122 It may pass through the first block 13 and through the outer needle 121.

The first block 13 may have a first channel 131 through which the extension portion 152 of the first handle portion 15 passes. The first channel 131 may be defined by a pair of first supports 1311 extending from both ends in the body width direction of the first block 13. At the end of the first support 1311 in the first direction D1 is a first support surface 132 to which the first locking portion 153 of the first handle portion 15 is selectively coupled. Therefore, the first handle portion 15 has an extension portion 152 penetrating the first channel 131 and a first locking portion 153 is selectively coupled to the first support surface 132 to form the first block 13. can be selectively driven.

The second block 14 may have a second channel 141 through which the extension portion 152 of the first handle portion 15 passes. The second channel 141 may be defined by a pair of second supports 1411 extending from both ends in the body width direction of the second block 14. At the end of the second support 1411 in the first direction D1 is a second support surface 142 to which the second locking portion 154 of the first handle portion 15 is selectively coupled. Therefore, the first handle portion 15 has an extension portion 152 penetrating the second channel 141 and a second locking portion 154 is selectively coupled to the second support surface 142 to form the second block 14. can be selectively driven.

FIG. 6 is a diagram showing the first handle portion 15.

The first handle unit 15 according to one embodiment independently drives at least one of the first block 13 or the second block 14 to control the first block 13 in the first state. It is possible to drive the second stage loading state by moving it to the first position and moving the second block 14 to the second position in the second state.

The first handle portion 15 includes a lever 151 provided at an end in the second direction D2 so that the user can pull the first handle portion 15, and a lever 151 in the axial direction D on this lever 151. It may include an extended extension portion 152. The extension portion 152 flows into the housing 11 through the third opening 113, and its end in the first direction D1 extends to penetrate the first block 13. The extension portion 152 may be formed in a pillar shape extending in the axial direction (D), and the thickness is the first channel 131 of the first block 13 and the second channel of the second block 14 ( 141) can be formed to a thickness that can penetrate.

The first handle portion 15 may include a first engaging portion 153 and a second engaging portion 154 arranged to be spaced apart from each other along the extension portion 152. The first locking portion 153 is located at the end of the extension portion 152 in the first direction D1, and the second locking portion 154 is located between the first locking portion 153 and the lever 151. .

The first catching portion 153 may be formed to have a thickness that does not pass through the first channel 131 of the first block 13. Therefore, the user can selectively move the first block 13 by the first locking portion 153, and at this time, the first locking portion 153 is connected to the first support surface 132 of the first block 13. It touches and transmits the user's power.

Optionally, the first locking portion 153 has a groove 1531 formed on one side, and one end of the third spring 173 can be coupled to this groove 1531, and the opposite side coupled to the extension portion 152 The tip 1532 may be disposed toward the third spring 173.

The second locking portion 154 may be located at approximately the middle position of the extension portion 152, and the distance between the first locking portion 153 and the second locking portion 154 is that of the first block 13. It may be a length corresponding to the sum of the axial length and the length of the first spring 171. At this time, the length of the first spring 171 may be the length before the first spring 171 is deformed, but may also be the length in a slightly compressed state.

The second locking portion 154 may be provided to be selectively coupled to the second block 14. As the user manipulates the handle 151, the second locking portion 154 is not coupled to the second block 14 at the first viewpoint, but is coupled to the second block 14 at a second viewpoint different from the first viewpoint. It can be provided as much as possible. That is, at the first time point, the second locking portion 154 passes through the second block 14 without being coupled to the second block 14, and at the second time point, the second locking portion 154 is connected to the second block 14. When combined with the 2 block 14, the second block 14 can be moved.

According to one embodiment, the second locking portion 154 may include a step portion 1541 protruding in a direction perpendicular to the axial direction D, as shown in FIG. 6 . The step portion 1541 may move the second block 14 by combining with the second support surface 142 of the second block 14 at the second viewpoint.

Additionally, the second locking portion 154 may further include a sliding portion 1542 located adjacent to the step portion 1541. According to one embodiment, the sliding part 1542 may be positioned perpendicular to the step part 1541. That is, the sliding part 1542 and the step part 1541 may be arranged adjacent to each other by 90 degrees in the thickness direction of the extension part 152.

As described above, the extension portion 152 penetrates the second channel 141 of the second block 14, and the step portion 1541 does not penetrate the second channel 141. The sliding part 1542 may be provided to penetrate the second channel 141.

To this end, the second channel 141 may be provided to have a first width W1 in a direction perpendicular to the axial direction D, and the sliding portion 1542 may have a second width W2 and a step portion 1541. ) may each be provided to have a third width W3. At this time, the third width W3 may be larger than the first width W1, and the second width W2 may be equal to or smaller than the first width W1.

When the sliding part 1542 passes through the second channel 141, the sliding surface 1543 of the sliding part 1542 faces the inner surface of the second channel 141, and the sliding surface 1543 is positioned to avoid friction. It may be slightly spaced apart from the inner surface of the second channel 141.

When the lever 151 of the first handle unit 15 is pulled in the second direction D2 in the state shown in FIG. 6, the sliding surface 1543 penetrates the second channel 141 of the second block 14. As a result, the first handle portion 15 does not move the second block 14.

When the user rotates the lever 151 90 degrees around the extension part 152 and pulls it in the second direction D2, the second locking part 154 is connected to the second channel 141 of the second block 14. does not pass through, and the step portion 1541 contacts the second support surface 142, causing the first handle portion 15 to move the second block 14.

The third spring 173 coupled to the first locking portion 153 of the first handle portion 15 holds the first handle portion 15 when the user pulls and releases the lever 151 in the second direction D2. Recover again in direction 1 (D1). In addition, when the user releases the lever 151 after rotating it by 90 degrees around the extension part 152, the third spring 173 can return the first handle part 15 to its original state.

FIG. 7 is a diagram showing the second handle portion 16 in more detail. The second handle unit 16 may include a first fixing part 161 and a second fixing part 162.

The first fixing part 161 is provided on the side of the housing 11 and can selectively fix the first block 13 in the first position. The first fixing part 161 is provided to be rotatable about the first rotation axis 1611, and the 1-1 end 1612 faces the first opening 111, and the 1-2 end ( 1613) is rotatably coupled to the first shaft coupling portion 1141 of the housing 11 with the first rotation axis 1611 selectively passing through the first window 1151 of the first partition 115. do. The first fixing part 161 may be provided so that the 1-1 end 1612 receives elastic force in a direction toward the first opening 111. The 1-1 end 1612 may support the second fixing part 162, and the 1-2 end 1613 may selectively support the first block 13.

The second fixing part 162 is provided on the side of the housing 11 and can selectively fix the second block 14 in the second position. The second fixing part 162 is provided to be rotatable about the second rotation axis 1621, and the 2-1 end 1624 is attached to the first fixing end 1111 of the first opening 111. It is possible to prevent the second fixing part 162 from completely falling out of the first opening 111. The 2-2 end 1625, which is an end opposite to the 2-1 end 1624, can selectively support the second block 14 by penetrating the second window 1152 of the first partition 115. . The 2-1 end 1624 may be provided in a wedge shape facing the first opening 111, and the 2-2 end 1625 may be provided in a wedge shape facing the second window 1152.

The portion of the second rotation axis 1621 facing the 2-1 end 1624 passes through the first opening 111, and the first side 1622 facing the outside of the housing 11 is connected to the second fixed end. The second surface 1623, which selectively touches 1112 and faces the inside of the housing 11, touches the 1-1 end 1612 of the first fixing part 161.

The second fixing part 162 can elastically rotate around the second rotating axis 1621, and a spring (not shown) is coupled to the second rotating axis 1621 to form the second fixing part 162. Can be elastically supported so that the first surface 1622 faces the outside of the housing 11. Optionally, a spring (not shown) is coupled only to the first rotation axis 1611 so that the first fixing part 161 holds the second fixing part 162 so that the first surface 1622 faces the outside of the housing 11. It can be elastically supported. Therefore, the user can operate the second handle unit 16 by pressing the first surface 1622.

In this way, the second block 14 and the second fixing part 162 are sequentially coupled and the first block 13 and the first fixing part 161 are sequentially combined by the pressing force of the second handle portion 16. ) can be released.

8A to 8B are diagrams schematically illustrating the operation steps of the cutting biopsy device according to an embodiment of the present invention described above.

The S1 stage is the preparation state. At this time, the tissue collection groove 1222 of the inner needle 122 is covered by the outer needle 121.

Step S2 is the first loading operation, and as the user pulls the lever 151 in the second direction D2, the first locking portion 153 is coupled to the first block 13 in the first state. At this time, the first block 13 is moved by a first distance a1 in the second direction D2 and is located at the first position. Accordingly, the first spring 171 is compressed, the third spring 173 is stretched, and the 1-2 end 1613 of the first fixing part 161 fixes and supports the first block 13. Accordingly, the first block 13 receives the force stored by the first spring 171. At this time, the second locking portion 154 may have a sliding portion 1542 that penetrates the second channel 141 of the second block 14 so that the second block 14 does not move.

As the first block 13 moves in the second direction D2, the outer needle 121 also moves, exposing the tissue collection groove 1222 of the inner needle 122.

In this state, when the user releases the lever 151, the first handle portion 15 is restored to its original position by the restoring force of the third spring 173 in step S3, and the second locking portion 154 is connected to the second block 14. ) passes through again in the first direction (D1).

Step S4 is the second loading operation, in which the user rotates the lever 151 90 degrees about the axial direction D and pulls it in the second direction D2, thereby opening the second locking portion 154 in the second state. The step portion 1541 comes into contact with the second support surface 142 of the second block 14. At this time, the second block 14 is moved by a second distance a2 in the second direction D2 and is located at the second position. The second distance (a2) may be the same as the first distance (a1). Accordingly, the second spring 172 is compressed, the third spring 173 is stretched, and the 2-2 end 1625 of the second fixing part 162 fixes and supports the second block 14. Accordingly, the second block 14 receives the force stored by the second spring 172.

In this state, when the user releases the lever 151, the first handle portion 15 is restored to its original position by the restoring force of the third spring 173 in step S5, and at this time, the axial direction of the third spring 173 ( In addition to the restoring force of D), the restoring force in the direction of rotation centered on the axis direction (D) also operates, so that the lever 151 can be restored to its original state by rotating the first handle portion 15 in the opposite direction to the direction in which the user turns. there is.

Next, the firing operation of the fully loaded cutting biopsy instrument will be described.

Figure 8b is a diagram sequentially showing the firing operation of a fully loaded cutting biopsy instrument.

With the loading completed in step S5, the user inserts the needle assembly into the patient's treatment area. At this time, the user can hold the housing so that the thumb rests on the second handle part 16, or the user can hold the housing as if holding a pencil and press the second handle part 16 with the index finger. No matter what position the user holds the housing in, the user can perform the procedure in a stable state that suits him best.

In this state, when the user presses the first surface 1622 of the second fixing part 162 with the first pressure P1, the second fixing part 162 rotates counterclockwise as in step S6 to press the second fixing part 162. The coupling between the 2-2 end 1625 of the fixing part 162 and the second block 14 is released and the second block 14 moves in the first direction (D1) by the condensed force of the second spring 172. ) is fired forward. At the same time, the inner needle 122 coupled to the second block 14 also moves forward in the first direction D1 to penetrate deeper into the tissue, and the tissue collection groove 1222 is exposed. Tissue is seated in the exposed tissue collection groove 1222.

Next, when the user presses the first surface 1622 of the second fixing part 162 with the second pressure P2, the second fixing part 162 further rotates counterclockwise as in step S7 to form the second fixing part 162. The top 162 presses the first fixing part 161, and the first fixing part 161 also rotates counterclockwise. Accordingly, the coupling between the 1-2 end 1613 of the first fixing part 161 and the first block 13 is released, and the first block 13 is moved by the condensed force of the first spring 171. It is fired forward in this first direction (D1). At the same time, the outer needle 121 coupled to the first block 13 also moves forward in the first direction D1 to cover the tissue collection groove 1222.

The outer needle unit 121 cuts the tissue seated in the tissue collection groove 1222 and allows the cut tissue to be sealed and accommodated in the tissue collection groove 1222.

In this way, the user can easily collect tissue by pressing the second handle part 16 with his or her thumb or index finger, so the user can perform the procedure in his or her preferred stable posture. In addition, since the needle assembly 12 can be launched simply by pressing the second handle 16 provided on the side of the housing 11, it is possible to provide the user with a comfortable posture during the procedure and provide greater psychological stability. It can be raised.

After firing is completed, a reloading operation can be performed by pulling the lever 151 as in step S2 of FIG. 8A for the next firing. At this time, step S2 can be a reloading process for the next launch and at the same time a recovery process to recover the collected tissue. That is, in step S2, when the user pulls the lever 151 to move and fix the first block 13 in the second direction D2, the outer needle 121 moves together and the tissue collection groove 1222 is opened. The user can retrieve the tissue accommodated in the open tissue collection groove 1222. In this way, the present invention can proceed with the recovery process through a reloading operation without the need for a separate recovery process, thereby minimizing the user's inconvenience. After retrieving the tissue, the user can complete reloading simply by rotating and pulling the lever 151, making reloading simpler.

Figures 9 and 10 are perspective and cross-sectional views showing a cutting biopsy instrument according to another embodiment of the present invention.

The cutting biopsy instrument according to the embodiment may further include a third handle portion 18 located adjacent to the second handle portion 16.

As can be seen in FIG. 10, the third handle portion 18 is slidably coupled to the front end of the housing 11. Part of the third handle part 18 protrudes to the outside of the housing so that the user can operate it, and the other part protrudes inside the housing. It is extended to

The end of the portion extending inside the housing of the third handle unit 18 in the second direction (D2) is formed in a latch shape and is provided to be caught inside the housing, so that the user can use the housing of the third handle unit 18. When the lock is released by pushing the lever portion exposed to the outside in the first direction D1, the third handle portion 18 can prevent the third handle portion 18 from being disconnected from the housing.

The portion extending inside the housing of the third handle portion 18 extends in the second direction D2, and the first fixed end 1111 of the housing 11 is in the state before the user pushes it in the first direction D1. ) can be extended to pass. Therefore, when the user is in a state before pushing the third handle part 18 in the first direction D1, the second handle is moved by the extended portion of the third handle part 18 in the vicinity of the first fixed end 1111. Since the tip of the second fixing part 162 of the handle unit 16 is supported, even if the user presses the second fixing part 162, it may not operate. In this state, the cutting biopsy instrument is locked, so safety can be maintained even if the device is fully loaded.

When the user pushes the third handle portion 18 in the first direction D1, the extended portion of the third handle portion 18 and the second fixing portion 162 of the second handle portion 16 are coupled. Since this is released, the safety state is released and the user can press the second fixing part 162 to proceed with the firing process.

The third handle part 18 as described above is located adjacent to the second handle part 16, which serves as a trigger button, so it is convenient for the user to operate. In other words, the user who has finished loading can operate the second handle unit 16 immediately after inserting the needle assembly into the treatment area and releasing the safety state by manipulating the third handle unit 18, thereby improving user convenience. can be maximized. Moreover, since the third handle part 18 is located in front of the second handle part 16, the user can more easily release the safety, and there is no need to position the hand differently for firing, thereby improving convenience of operation. It can be raised even further.

According to the present invention, the loading operation for the two spring structures can be completed with a simple operation, and the user's grip comfort and simplicity of operation can be provided, so the procedure can be completed safely.

Each of the embodiments described above can be implemented independently, but of course, the structure of each embodiment can be applied in combination to other embodiments.

As such, the present invention has been described with reference to the embodiments shown in the drawings, but these are merely illustrative, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. . Therefore, the true scope of technical protection of the present invention should be determined by the technical spirit of the attached patent claims.

Specific implementations described in the embodiments are examples and do not limit the scope of the embodiments in any way. Additionally, if there is no specific mention such as “essential,” “important,” etc., it may not be a necessary component for the application of the present invention.

In the specification of the embodiment (particularly in the claims), the use of the term “above” and similar referential terms may refer to both the singular and the plural. In addition, when a range is described in an example, the invention includes the application of individual values within the range (unless there is a statement to the contrary), and is the same as describing each individual value constituting the range in the detailed description. . Finally, unless the order of the steps constituting the method according to the embodiments is clearly stated or there is no description to the contrary, the steps may be performed in an appropriate order. The embodiments are not necessarily limited by the order of description of the steps above. The use of all examples or illustrative terms in the embodiments is simply for explaining the embodiments in detail, and the scope of the embodiments is not limited by the examples or illustrative terms unless limited by the claims. Additionally, those skilled in the art will recognize that various modifications, combinations and changes may be made depending on design conditions and factors within the scope of the appended claims or their equivalents.

1: Cutting biopsy instrument
11: housing
12: Needle set
13: 1st block
14: 2nd block
15: first handle part
16: second handle part
17: spring part
18: Third handle part

Claims (9)

A needle set including an inner needle portion having a tissue collection groove, and an outer needle portion that is shorter than the inner needle portion, covers the inner needle portion, and is provided to move along the longitudinal direction of the inner needle portion to selectively open and close the tissue collection groove;
a housing having an inner space therein so that at least one area of the needle set is disposed;
a first block accommodated in the housing, coupled to one end of the outer needle portion, through which the inner needle portion passes, and provided to move along the longitudinal direction of the housing;
a second block accommodated in the housing, coupled to one end of the inner needle, and provided to move in parallel with the direction of movement of the first block;
a spring unit including a first spring providing elastic force to the first block and a second spring providing elastic force to the second block;
a first handle unit provided to selectively drive at least one of the first block and the second block; and
It includes; a second handle portion provided to fix at least one of the first block or the second block,
The first handle unit independently drives at least one of the first block and the second block to move the first block to a first position in a first state, and to move the second block to a second position in a second state. A cutting biopsy instrument, characterized in that it can be moved to a position and driven into a two-stage loading state. According to claim 1,
The first handle part,
a first locking portion provided to move along the longitudinal direction of the housing and selectively coupled to the first block; and
A cutting biopsy instrument comprising a second locking portion that is provided to move along the longitudinal direction of the housing and selectively engages the second block. According to clause 2,
The second locking portion includes a step protruding in one direction perpendicular to the axial direction, and the second locking portion selectively penetrates the second block or moves through the second block according to the driving of the first handle portion. A cutting biopsy device that combines with one end of a cutting biopsy device. According to clause 3,
The second locking portion further includes a sliding portion located adjacent to the step, and the second locking portion is provided to penetrate the second block through the sliding portion. According to claim 1,
The second handle portion is provided on a side of the housing and includes a first fixing portion for selectively fixing the first block in the first position. According to clause 5,
The second handle portion is provided on a side of the housing and further includes a second fixing portion that selectively fixes the second block in the second position. According to clause 6,
The second handle unit is a cutting biopsy instrument that releases the coupling of the second block and the second fixing part and the coupling of the first block and the first fixing part by a pressing force. According to claim 1,
The spring portion further includes a third spring that provides elastic force to the first handle portion. According to claim 1,
A cutting biopsy instrument further comprising a third handle positioned adjacent to the second handle, the cutting biopsy instrument being capable of switching the cutting biopsy instrument to a locked state.

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