WO2022124444A1

WO2022124444A1 - Surgical stapling device

Info

Publication number: WO2022124444A1
Application number: PCT/KR2020/017985
Authority: WO
Inventors: 정권호
Original assignee: 주식회사 메디튤립
Priority date: 2020-12-07
Filing date: 2020-12-09
Publication date: 2022-06-16

Abstract

An embodiment of the present invention provides a surgical stapling device, a configuration of which is simple and operability and stability of which have been improved. The surgical stapling device comprises: a loading unit having a cutter for cutting tissue of a human body and a stapler for suturing a cut part; and a handle unit detached from the loading unit and controlling an operation of the loading unit, wherein the handle unit comprises a handle case part, a driving shaft part, and a locking part. The driving shaft part is provided to reciprocate forward and backward inside the handle case part, and pushes the cutter forward while moving forward. The locking part is disposed adjacent to the front end of the driving shaft part, and is provided to be movable up or down at the handle case part to prevent the driving shaft part from moving forward. The locking part comprises an elevating body provided to be movable up or down by an external force at the upper side of the front end of the driving shaft part, and a vertical movement of the elevating body is guided by the handle case part.

Description

surgical staple device

The present invention relates to a surgical staple device, and more particularly, to a surgical staple device having a simple configuration and improved operability and safety.

A surgical staple device is used to clamp or cut tissue and to staple the clamped or cut tissue. As such, the surgical staple device has a mechanism for clamping or cutting tissue and a mechanism for driving a staple through the tissue.

In addition, the surgical stapling device has a configuration of a plurality of triggers and handles together with complex mechanisms for providing clamping or proper stapling of the cut tissue.

However, such a complex mechanism may be a potential cause of device failure or user confusion. In addition, such a complicated mechanism increases the number of parts, which makes the configuration complicated, and may also cause the manufacturing process to be complicated.

In addition, as the surgical stapling device is used in a surgical operation, it must be operated to clamp or cut tissue only when the user intends to, or to staple the cut tissue. Accordingly, there is a need for a surgical staple device having improved operability and safety without having a complicated mechanism.

In order to solve the above problems, the technical problem to be achieved by the present invention is to provide a surgical staple device having a simple configuration and improved operability and safety.

The technical problems to be achieved by the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by those of ordinary skill in the art to which the present invention belongs from the description below. There will be.

In order to achieve the above technical object, an embodiment of the present invention includes a loading unit having a cutter for excising body tissue and a staple for sealing the ablation site, and the loading unit is detached and to control the operation of the loading unit A surgical staple device comprising a handle unit for: a handle case unit; a drive shaft portion provided to reciprocate in the front-rear direction inside the handle case portion and for pushing the cutter forward while moving forward; and a locking part disposed adjacent to the front end of the drive shaft and provided to be elevating on the handle case part to prevent forward movement of the drive shaft, wherein the locking part is protected from external force at the upper side of the front end of the drive shaft. It provides a surgical staple device, characterized in that it comprises a lifting body provided to be lifted by the lifting body, characterized in that the vertical movement of the lifting body is guided by the handle case portion.

In an embodiment of the present invention, the locking part is provided between the elevating body and the handle case part, the upper end is in close contact with the handle case part, and the lower end is in close contact with the upper part of the elevating body so that the elevating body is moved downward. It may have a lifting body elastic member for supporting.

In an embodiment of the present invention, a recess into which the lower end of the elastic member of the elevating body is inserted may be formed in the upper portion of the elevating body.

In an embodiment of the present invention, an operation handle portion provided to be hinged on the handle case portion; And it is provided to be hinged to rotate on the operation handle portion, and may include a latch portion caught on the lower surface of the drive shaft portion to push the drive shaft portion.

In an embodiment of the present invention, the locking portion is formed to extend downwardly from one end of the elevating body, and when the elevating body is in a lowered state, the lower end is located below the lower surface of the drive shaft portion, so that the lower surface of the drive shaft portion It may have a guide protrusion for guiding the clasp portion moved in close contact with the drive shaft to be separated from the lower surface.

In an embodiment of the present invention, the handle unit is provided to reciprocate in the front and rear directions on the inside of the handle case part, and when the loading unit is coupled, it is pressed by the loading unit to move backward while moving the locking part upward. The clasp may include a lock release unit that allows the drive shaft to be pushed forward.

In an embodiment of the present invention, the locking part is formed to protrude from one end of the elevating body, and has a first inclined protrusion having a first inclined surface that is pressed by the unlocking part when the unlocking part is moved rearward, When the first inclined protrusion is pressed by the unlocking unit to move upward, the lower end of the guide protrusion may be located above the lower surface of the drive shaft.

In an embodiment of the present invention, the block housing is provided to reciprocate in the front and rear directions in front of the unlocking unit, and when the loading unit is coupled, it is pressed by the loading unit and moves backward while pressing the unlocking unit backward. and a front end of the unlocking unit may be inserted and coupled to a rear end of the block housing unit.

In an embodiment of the present invention, the unlocking portion is provided to reciprocate in the front and rear directions inside the handle case portion, and a body bar having a long hole extending in the front and rear direction, and the rear end is inserted into the long hole and the rear end is the handle case portion It is in close contact with the front end portion is in close contact with the front end of the long hole may have a body bar elastic member for elastically supporting the body bar in the front.

In an embodiment of the present invention, a locking projection is formed to protrude from the front end of the unlocking unit, and an insertion portion into which the locking projection is inserted may be formed on the rear end of the block housing unit.

In an embodiment of the present invention, the unlocking portion is formed on the front end of the body bar, has a first flange in which the locking projection is formed on the front side, the block housing portion is formed to face the first flange, the rear It may have a second flange in which the insertion portion is formed.

In an embodiment of the present invention, the insertion portion is formed to protrude from the second flange in the circumferential direction, the first ring-shaped protrusion is formed to protrude along the circumferential direction to the second flange, and is formed to be spaced apart from the first ring-shaped protrusion. It has a second ring-shaped projection forming an insertion groove between the first ring-shaped projection, the locking projection may be inserted into the insertion groove.

In an embodiment of the present invention, the handle case portion has a fixing protrusion extending to the inner rear of the long hole, and the rear end of the elastic member may be in close contact with the front end of the fixing protrusion.

In an embodiment of the present invention, the handle case part has a pair of body bar guide ribs extending in the front and rear directions from the upper and lower sides of the body bar so that the body bar is inserted and guiding the front and rear movement of the body bar. can

In an embodiment of the present invention, the handle case part may have a separation prevention protrusion formed to protrude from the guide rib to prevent separation of the body bar.

In an embodiment of the present invention, the drive shaft portion may have a first fixing groove formed on an upper surface, and the locking portion may have a stop protrusion inserted into the first fixing groove to restrict forward movement of the drive shaft portion.

In an embodiment of the present invention, the drive shaft portion has a second fixing groove recessed in the upper portion, a rotation bar provided to be rotated in the handle case unit from an upper side of the second fixing groove, and on the outer peripheral surface of the rotation bar An auxiliary locking unit having a protrusion formed to protrude and inserted into the second fixing groove, and a rotating bar elastic member that provides an elastic restoring force so that the protrusion presses the second fixing groove backward to restrict the forward movement of the drive shaft part. may include

In an embodiment of the present invention, the locking part has extension protrusions extending in a vertical direction to both ends of the elevating body, and the handle case part is formed to extend in the up-down direction so that the extension protrusions are inserted, and the elevating and lowering of the extension protrusions It may have a pair of extended protrusion guide ribs for guiding movement.

In an embodiment of the present invention, it includes a connection unit coupled to the front end of the handle unit and from which the loading unit is detachable, wherein the loading unit has an insertion protrusion protruding from the outer peripheral surface of the rear end, the connection unit The front end is formed to protrude from the inner circumferential surface, and is spaced apart along the circumferential direction to have a receiving protrusion for inserting the insertion protrusion, the insertion protrusion may have a tapered rear end, and a front end of the receiving protrusion may be tapered.

According to an embodiment of the present invention, when the loading unit is not coupled to the handle unit, the lower end of the guide protrusion is located lower than the lower surface of the drive shaft. You can guide it to fall off. Accordingly, since the clasp does not push the drive shaft forward, even if the user unintentionally pulls the operation handle in a state in which the loading unit is not engaged, the cutter and staple of the loading unit may not work.

In addition, according to an embodiment of the present invention, a locking projection is formed on the front end of the unlocking unit, and an insertion portion is formed on the rear end of the block housing so that the locking projection is inserted, so that the unlocking part and the block housing part can be firmly coupled to each other have.

In addition, according to an embodiment of the present invention, the insertion protrusion of the loading unit has a tapered rear end, and the receiving protrusion formed on the adapter of the connection unit has a tapered front end, so that it is easy to insert the receiving protrusion into the insertion space between the receiving protrusions. can do.

It should be understood that the effects of the present invention are not limited to the above-described effects, and include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.

1 is a perspective view showing a surgical staple device according to an embodiment of the present invention.

2 is a perspective view showing the inside of the handle unit in the surgical staple device according to an embodiment of the present invention.

FIG. 3 is a perspective view showing the handle case part removed in FIG. 2 .

4 and 5 are perspective views showing the drive shaft of the surgical staple device according to an embodiment of the present invention.

6 and 7 are perspective views illustrating a locking unit of the surgical staple device according to an embodiment of the present invention.

8 is a perspective view illustrating a portion of a handle case portion of the surgical staple device according to an embodiment of the present invention.

9 is a perspective view illustrating a portion “A” of FIG. 8 .

10 is an exemplary view for explaining the operation of the stopper portion and the clasp in the surgical staple device according to an embodiment of the present invention.

11 is a perspective view showing the auxiliary locking unit of the surgical staple device according to an embodiment of the present invention.

12 is a perspective view showing the unlocking part of the surgical staple device according to an embodiment of the present invention.

13 and 14 are perspective views illustrating the unlocking unit and the block housing of the surgical staple device according to an embodiment of the present invention.

15 is an exemplary view for explaining the operation of the clasp in a state in which the locking unit is lowered in the surgical staple device according to an embodiment of the present invention.

16 is an exemplary view for explaining the operation of the clasp in a state in which the locking unit is raised in the surgical staple device according to an embodiment of the present invention.

17 is a perspective view showing the loading unit of the surgical staple device according to an embodiment of the present invention.

18 is a plan view showing the insertion protrusion of the loading unit of the surgical staple device according to an embodiment of the present invention.

19 is a perspective view showing the adapter of the connection unit of the surgical staple device according to an embodiment of the present invention.

100: loading unit 110: insertion projection

200: handle unit 220: drive shaft unit

224: second ratchet 230: operation handle portion

240: clasp unit 250: locking unit

254: extension projection 258: stop projection

260: unlocking unit 265: locking projection

270: stopper portion 271: stopper

290: auxiliary locking unit 310: block housing unit

311: second flange 312: insertion part

313: first ring-shaped protrusion 314: second ring-shaped protrusion

315: insertion groove 500: connection unit

521: receptor projection

Hereinafter, the present invention will be described with reference to the accompanying drawings. However, the present invention may be embodied in several different forms, and thus is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a part is said to be “connected (connected, contacted, coupled)” with another part, it is not only “directly connected” but also “indirectly connected” with another member interposed therebetween. "Including cases where In addition, when a part "includes" a certain component, this means that other components may be further provided without excluding other components unless otherwise stated.

The terminology used herein is used only to describe specific embodiments, and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present specification, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the surgical staple device includes a loading unit 100 having a cutter (not shown) for excising body tissue and a staple (not shown) for sealing the excision site, and the loading unit 100. Connection unit 500 having a handle unit 200 for controlling the operation of the detachable loading unit 100, and an adapter 520 coupled to the front end of the handle unit 200 and detachable from the loading unit 100. may include The loading unit 100 is not particularly limited as long as it has a cutter and a staple that implements the functions as described above. Hereinafter, the handle unit 200 and the connection unit 500 will be described in detail.

2 is a perspective view showing the inside of the handle unit in the surgical staple device according to an embodiment of the present invention, FIG. 3 is a perspective view showing the handle case part removed in FIG. 2, and FIGS. 4 and 5 are the present invention It is a perspective view showing the drive shaft portion of the surgical staple device according to an embodiment.

1 to 5 , the handle unit 200 includes a handle case part 210 , a drive shaft part 220 , an operation handle part 230 , a clasp part 240 , and a locking part 250 . can do.

The handle case part 210 may form an outer case of the handle unit 200 . The handle case part 210 may have a first case part 211a and a second case part 211b, and the first case part 211a and the second case part 211b are the whole except for a part. They may be formed symmetrically with each other.

Hereinafter, for convenience of explanation, the direction from the handle unit 200 to the loading unit 100 is the forward direction (FW), and the direction from the loading unit 100 to the handle unit 200 is the rear direction (BW). And, based on this, it will be described as front/front/front/front/front, and rear/rear/rear/rear.

The drive shaft 220 may be provided inside the handle case 210 to reciprocate in the front-rear direction. The drive shaft unit 220 may have a shaft body 221 , a first ratchet 223 , and a second ratchet 224 .

The shaft body 221 may form the body of the drive shaft unit 220 and may be formed to extend in the front-rear direction.

The first ratchet 223 may be formed on the lower surface 222 of the shaft body 221 , and a plurality of first ratchets 223 may be formed along the longitudinal direction of the shaft body 221 . The first ratchet 223 may be formed so that only a force applied forward is input. That is, when a forward force is applied to the first ratchet 223 , the shaft body 221 may move forward. On the other hand, the force applied to the rear may not be input to the first ratchet 223 , and the shaft body 221 may not move backward.

The second ratchet 224 may be formed on a side surface of the shaft body 221 , and may be formed in a direction opposite to that of the first ratchet 223 . When the second ratchet 224 is coupled to the fixed structure, the shaft body 221 may be constrained and not move forward.

A connection rod 510 connected to the cutter of the loading unit 100 may be coupled to the front end of the drive shaft 220 . When the drive shaft unit 220 moves forward, the connecting rod 510 also moves forward, and accordingly, the cutter may be pushed forward. A cutter pushed forward can ablate tissue in the body, and staples can be fired to suture the tissue.

In addition, the drive shaft 220 may have a second inclined surface 225 , an inclined groove 226 , and a locking protrusion 227 .

The second inclined surface 225 may be formed on the lower surface 222 of the front end of the shaft body 221 . The inclined groove 226 may be formed in the rear of the second inclined surface 225 in the lower surface 222 of the front end of the shaft body 221 . In addition, the locking protrusion 227 may be formed in the rear of the inclined groove 226 in the lower surface 222 of the front end of the shaft body 221 .

Also, the drive shaft 220 may have a first fixing groove 228 , a second fixing groove 229 , and a third fixing groove 229a.

The first fixing groove 228 may be formed at the front end of the upper surface of the drive shaft 220 . The second fixing groove 229 may be formed in the rear of the first fixing groove 228 in the upper portion of the drive shaft 220 . The second fixing groove 229 may be recessed over the upper surface and the side surface of the drive shaft 220 . In addition, the third fixing groove 229a may be formed in the rear of the second fixing groove 229 on the upper surface of the drive shaft part 220 .

The upper portion of the operation handle unit 230 may be provided inside the handle case unit 210 , and the remaining portion may extend outside the handle case unit 210 . A first hinge hole 231 may be formed through the upper portion of the operation handle unit 230 . In addition, the handle case part 210 may have a first hinge shaft 212 (refer to FIG. 8 ), and the first hinge shaft 212 may be coupled to the first hinge hole 231 . Through this, the operation handle unit 230 may be hingedly rotated about the first hinge shaft 212 .

A handle spring 233 may be provided inside the handle case part 210 . The rear end of the handle spring 233 may be fixed to the handle case unit 210 , and the front end of the handle spring 233 may be connected to the upper end of the operation handle unit 230 . The handle spring 233 may generate a contractile restoring force. Accordingly, the handle spring 233 may pull the upper end of the actuating handle portion 230 rearward.

The latch unit 240 may be coupled to the upper end of the operation handle unit 230 by a second hinge shaft 241 , and may be hingedly rotated around the second hinge shaft 241 . A torsion spring (not shown) may be provided on the second hinge shaft 241 to provide an elastic force to rotate the front end of the clasp 240 upward.

The locking part 250 may be disposed adjacent to the front end of the drive shaft part 220 , and may be provided in the handle case part 210 to be able to move up and down.

6 and 7 are perspective views showing the locking part of the surgical staple device according to an embodiment of the present invention, and Figure 8 is a perspective view showing a part of the handle case part of the surgical staple device according to an embodiment of the present invention, 9 is a perspective view illustrating a portion “A” of FIG. 8 .

3, 6 to 9, the locking part 250 includes the elevating body 251, the extension protrusion 254, the guide protrusion 252, the elevating body elastic member 253 and the first inclined protrusion ( 256) can have.

The elevating body 251 may be provided above the front end of the drive shaft 220 . The elevating body 251 may extend to cross the drive shaft 220 .

The extension protrusion 254 may be formed to extend vertically at both ends of the elevating body 251 . In addition, the handle case part 210 may have extended

protrusion guide ribs

213a and 213b. The extension

protrusion guide ribs

213a and 213b may be formed as a pair so that the extension protrusion 254 is inserted, and may be formed to extend in the vertical direction. Since the front surface of the extension protrusion 254 is in close contact with the extension protrusion guide rib 213a in the front, and the rear surface of the extension protrusion 254 can be in close contact with the extension protrusion guide rib 213b in the rear, the extension protrusion guide rib ( 213a and 213b may guide the lifting movement of the extension protrusion 254 .

The guide protrusion 252 may be formed to extend downwardly at one end of the elevating body 251 . When the elevating body 251 is in a lowered state, the lower end of the guide protrusion 252 may be located lower than the lower surface 222 of the drive shaft 220 . And, when the elevating body 251 is in an elevated state, the lower end of the guide protrusion 252 may be located above the lower surface 222 of the drive shaft 220 .

The lifting body elastic member 253 may be provided between the lifting body 251 and the handle case part 210 . The upper end of the elevating body elastic member 253 is in close contact with the handle case unit 210 , and the lower end may be in close contact with the upper portion of the elevating body 251 , and the elevating body elastic member 253 is the elevating body 251 on the lower side. can be elastically supported. A recess 255 into which the lower end of the elevating body elastic member 253 is inserted may be formed in the upper portion of the elevating body 251 .

The first inclined protrusion 256 may be formed to protrude from one end of the elevating body 251 . A first inclined surface 257 may be formed at the lower end of the first inclined protrusion 256 , and the first inclined surface 257 may be positioned above the lower end of the guide protrusion 252 .

In addition, the locking part 250 may have a stop protrusion 258 . The stop protrusion 258 may be formed to extend rearwardly from the lower portion of the elevating body 251 . When the lifting body 251 descends, the stop protrusion 258 may be inserted into the first fixing groove 228 of the drive shaft 220 . At this time, since the rear end of the stop protrusion 258 may be in close contact with the rear end of the first fixing groove 228 , the drive shaft 220 may be constrained not to move forward.

Meanwhile, as shown in FIGS. 3 and 8 , the surgical staple device may include a stopper unit 270 .

The stopper part 270 may be provided below the drive shaft part 220 at the rear of the upper end of the operation handle part 230 . The stopper part 270 may be elastically supported so as to be lowered by the actuating spring 273 .

The handle case part 210 may have stopper

part guide ribs

214a and 214b formed as a pair, and the stopper part 270 may be provided in a space between the stopper

part guide ribs

214a and 214b. The

stopper guide ribs

214a and 214b may extend vertically, and the stopper 270 may move up and down in a space between the

stopper guide ribs

214a and 214b. In the space between the stopper

part guide ribs

214a and 214b, the front side of the stopper part 270 may be in close contact with the front stopper part guide rib 214a, and the rear surface of the stopper part 270 is a rear stopper part guide. It may be in close contact with the rib 214b. Therefore, when the stopper part 270 moves up and down, the

stopper guide ribs

214a and 214b may guide the stopper part 270 to move up and down stably.

In addition, the handle case part 210 may have a first fixing protrusion 214c. The first fixing protrusion 214c may be formed to protrude above the space between the

stopper guide ribs

214a and 214b. The first fixing protrusion 214c is formed in the stopper portion 270 in the vertical direction and can be inserted into the first long hole 275 having an actuating spring 273 therein, and the upper end of the actuating spring 273 is the first It may be in close contact with the lower surface of the fixing protrusion 214c. Since the first fixing protrusion 214c maintains a fixed state even when the stopper portion 270 is raised and lowered, the actuating spring 273 may stably and elastically support the stopper portion 270 downward.

When the drive shaft part 220 is located at the rearmost side of the handle case part 210 (hereinafter referred to as a "basic state"), the stopper 271 of the stopper part 270 is the drive shaft part 220 . It may be provided vertically below the second ratchet 224 .

When the upper end of the actuating handle unit 230 is pulled rearward by the handle spring 233 , the upper end of the rotating actuating handle unit 230 may be in close contact with the stopper unit 270 to stop rotation. A pressing protrusion 232 may be formed on the upper end of the operation handle unit 230 , and when the pressing projection 232 presses the second inclined projection 272 of the stopper unit 270 , the operation handle unit 230 . is stopped, and at the same time, the stopper part 270 moves upward, so that the stopper 271 can be coupled to the second ratchet 224 . Then, the drive shaft 220 may be constrained not to move forward. Hereinafter, as shown in FIG. 3 , a state in which the pressing protrusion 232 of the actuating handle part 230 is in close contact with the second inclined protrusion 272 and the rotation of the actuating handle part 230 is stopped is referred to as an “initial state”.

As shown in (a) of FIG. 10 , when the drive shaft part 220 is in a basic state and the operation handle part 230 is in an initial state, the pressing protrusion 232 of the operation handle part 230 is a second inclined projection. (272) is pressurized. Then, the stopper unit 270 moves upward, the stopper 271 is coupled to the second ratchet 224 , and the drive shaft unit 220 may be constrained not to move forward. This may provide an effect of preventing the drive shaft unit 220 from being moved forward unintentionally.

As shown in (a) of FIG. 10, when the operation handle part 230 is in the initial state, the rear end of the latch part 240 may be pressed by the stopper part guide rib 214a (refer to FIG. 8), and thus The rotation of the clasp 240 is restricted so that the pusher 242 formed at the front end of the clasp 240 may be spaced apart from the lower surface of the drive shaft 220 .

Then, as shown in (b) of FIG. 10 , when the operation handle part 230 is pulled by the user (A1), that is, the upper part of the operation handle part 230 is moved forward with respect to the first hinge shaft 212 . When rotating, the pressing protrusion 232 cannot press the second inclined protrusion 272 . Then, the stopper part 270 is moved downward by the elastic restoring force of the actuating spring 273 , and the stopper 271 is separated from the second ratchet 224 to release the coupling.

At the same time, since the rear end of the clasp 240 is also separated from the stopper part guide rib 214a, the restraint by the stopper part guide rib 214a may be released. Then, the front end of the clasp 240 may be rotated upward by the elastic restoring force of the torsion spring, and the pusher 242 may be in close contact with the lower surface 222 of the drive shaft 220 . And, when the rotation A1 of the operation handle part 230 continues, the pusher 242 is caught by the locking jaws 227 of the drive shaft part 220 while moving forward, and the drive shaft part 220 moves forward. can be pushed to

Thereafter, when the user's pulling force on the operation handle part 230 is removed, the operation handle part 230 may be rotated back to its initial state by the elastic restoring force of the handle spring 233 (refer to FIG. 3 ). At this time, since the drive shaft 220 has already moved forward by a predetermined distance, even if the stopper 270 is raised, the stopper 271 cannot be coupled to the second ratchet 224 . And, when the operation handle part 230 is pulled back by the user, the pusher 242 may be coupled to the first ratchet 223 , and the pusher 242 pushes the first ratchet 223 forward. Accordingly, the drive shaft 220 may be moved forward.

8 and 11 , the surgical staple device may include an auxiliary locking unit 290 . The auxiliary locking part 290 may have a rotating bar 291 , a protrusion 293 , and a rotating bar elastic member 294 .

The rotary bar 291 may be provided to cross the drive shaft 220 at the upper side of the second fixing groove 229 of the drive shaft 220 . Both ends of the rotating bar 291 may be coupled to the third hinge shaft 218 of the handle case unit 210 to be rotatable, respectively.

The protrusion 293 may be formed to protrude from the outer circumferential surface of the rotating bar 291 , and may be inserted into the second fixing groove 229 .

The rotating bar elastic member 294 may be provided to surround the rotating bar 291 . The rotating bar elastic member 294 may have one end coupled to the cutout groove 292 formed in the rotating bar 291 , and the other end coupled to the third fixing groove 229a. The rotating bar elastic member 294 may provide an elastic restoring force such that the protrusion 293 coupled to the second fixing groove 229 presses the second fixing groove 229 backward. Through this, the forward movement of the drive shaft unit 220 may be limited. When a force greater than the elastic restoring force of the rotating bar elastic member 294 is applied to the driving shaft unit 220 forward, the driving shaft unit 220 can be moved forward, and the rotating bar 291 can be rotated. have.

In addition, the surgical staple device may include a unlocking unit 260 .

12 is a perspective view showing the unlocking part of the surgical staple device according to an embodiment of the present invention, and FIGS. 13 and 14 are the unlocking part and the block housing of the surgical staple device according to an embodiment of the present invention. is a perspective view showing

9 and 11 to 14 , the unlocking unit 260 may include a body bar 261 and a body bar elastic member 263 .

The body bar 261 may be provided inside the handle case part 210 to reciprocate in the front-rear direction. To this end, the handle case part 210 may have a pair of body

bar guide ribs

216a and 216b. The body

bar guide ribs

216a and 216b may be formed to extend in the front and rear directions from the upper and lower sides of the body bar 261 so that the body bar 261 is inserted, and installed between the body

bar guide ribs

216a and 216b. A space 216c may be formed. The body bar 261 may be moved in the front-rear direction in the installation space 216c, and in the installation space 216c, the upper surface of the body bar 261 is in close contact with the upper body bar guide rib 216a, and the lower surface is the lower side. It may be in close contact with the body bar guide rib (216b) of the.

The handle case part 210 may have a pair of

separation prevention protrusions

217a and 217b, and the

separation prevention projections

217a and 217b are formed to protrude to face each other on the body

bar guide ribs

216a and 216b, and the body bar (261) can be prevented.

The body bar 261 may have a second long hole 262 extending in the longitudinal direction of the body bar 261 . In addition, the handle case part 210 may have a second fixing protrusion 215 . The second fixing protrusion 215 may be formed to protrude from the installation space 216c. When the body bar 261 is positioned in the installation space 216c, the second fixing protrusion 215 may be inserted into the second long hole 262. The second fixing protrusion 215 may be located at the rear inside the second long hole 262 .

In addition, the body bar elastic member 263 may be inserted into the second long hole 262 , and the rear end of the body bar elastic member 263 inside the second long hole 262 is the front end of the second fixing protrusion 215 . It is in close contact with the part, and the front end is in close contact with the front end of the second long hole 262 to elastically support the body bar 261 in the front. Even if the body bar 261 is moved rearward, since the second fixing protrusion 215 is in a fixed state, the elastic restoring force of the body bar 261 is stably generated while being compressed while the body bar elastic member 263 is compressed. can

In addition, the unlocking unit 260 may have a first flange 264 and a locking protrusion 265 .

The first flange 264 may be formed on the front end of the body bar 261 , and the locking protrusion 265 may be formed on the front surface of the first flange 264 .

In addition, the surgical staple device may include a block housing 310 .

The block housing unit 310 may be provided to reciprocate in the front and rear directions in front of the unlocking unit 260 . When the loading unit 100 is coupled, the block housing unit 310 is pressed by the loading unit 100 and can be moved rearward, and the block housing unit 310 moving rearwardly moves the body bar 261 rearward. It can be moved by pressing.

The block housing part 310 may have a second flange 311 and an insertion part 312 .

The second flange 311 may be formed at the rear end of the block housing 310 and may face the first flange 264 .

The insertion part 312 may be formed on the rear surface of the second flange 311 . The insertion part 312 may have a first ring-shaped protrusion 313 and a second ring-shaped protrusion 314 .

The first ring-shaped protrusion 313 may be formed to protrude from the second flange 311 in the circumferential direction.

And, the second ring-shaped protrusion 314 is formed to protrude along the circumferential direction on the second flange 311, is formed to have a larger diameter than the first ring-shaped protrusion 313 to be formed to be spaced apart from the first ring-shaped protrusion 313. can Accordingly, an insertion groove 315 may be formed between the first ring-shaped protrusion 313 and the second ring-shaped protrusion 314 , and the engaging projection 265 of the body bar 261 is provided in the insertion groove 315 . can be inserted. When the locking projection 265 is inserted into the insertion groove 315, the locking projection 265 may be constrained not to move in the radial direction. Through this, the block housing unit 310 and the body bar 261 may be firmly fixed, and the block housing unit 310 may stably press the body bar 261 .

15 is an exemplary view for explaining the operation of the latch unit in a state in which the locking unit is lowered in the surgical staple device according to an embodiment of the present invention, Figure 16 is a surgical staple device according to an embodiment of the present invention locking It is an exemplary view for explaining the operation of the clasp in the state in which the part is raised.

1, 2, 12, 15 and 16, when the loading unit 100 is not coupled to the handle unit 200, the unlocking unit 260 is the block housing unit 310. ), as shown in FIG. 15 , the rear end of the unlocking part 260 does not contact the first inclined surface 257 of the locking part 250 or even in contact with the first inclined surface 257. It may be in a state in which the first inclined surface 257 is not pressed. Then, the lower end of the guide protrusion 252 may be positioned lower than the lower surface of the drive shaft 220 by the elastic restoring force of the elevating body elastic member 253 , and may cover the engaging protrusion 227 . Accordingly, as shown in (b) of FIG. 15 , when the pusher 242 moves near the clasp 240 , the guide protrusion 252 is the pusher 242 from the lower surface 222 of the drive shaft 220 . may be guided to fall off, and the clasp 240 may not be able to push the drive shaft 220 forward. Here, the lifting body elastic member 253 may have a greater elastic restoring force than the torsion spring for rotating the clasp 240 .

On the other hand, as shown in FIG. 16 , as the loading unit 100 is coupled to the handle unit 200 , the unlocking unit 260 is pressed and moved to the rear, the unlocking unit 260 is the first inclined surface 257 . ) can be pushed up by pressing. Then, the locking part 250 may be moved upward, and the lower end of the guide protrusion 252 may be located above the lower surface 222 of the drive shaft part 220 . Accordingly, the locking jaw 227 of the drive shaft 220 may be exposed, and the pusher 242 of the locking part 240 pushes the locking jaw 227 so that the drive shaft 220 moves forward. can make it happen

As such, if the loading unit 100 is not coupled to the handle unit 200, the pusher 242 cannot push the drive shaft 220 forward, so that in a state in which the loading unit 100 is not coupled Even if the user unintentionally pulls the operation handle part 230, the cutter and stapler of the loading unit 100 may not work.

17 is a perspective view showing the loading unit of the surgical staple device according to an embodiment of the present invention, Figure 18 is a plan view showing the insertion protrusion of the loading unit of the surgical staple device according to an embodiment of the present invention. , FIG. 19 is a perspective view showing the adapter of the connection unit of the surgical staple device according to an embodiment of the present invention.

17 to 19 , the loading unit 100 may have an insertion protrusion 110 protruding from the outer peripheral surface of the rear end. A pair of insertion protrusions 110 may be provided. In addition, the insertion protrusion 110 may have a tapered rear end 111 formed therein.

In addition, the connection unit 500 may have an adapter 520 to which the loading unit 100 is detachably attached to the front end. In addition, a receiving protrusion 521 may be formed to protrude from the inner circumferential surface of the adapter 520 . The receiving protrusions 521 may be spaced apart along the circumferential direction, and an insertion space 523 may be formed between the receiving protrusions 521 . The insertion protrusion 110 may be inserted into the insertion space 523 between the receiving protrusions 521 . The receiving protrusion 521 may have a tapered front end 522 formed therein. Since both the rear end of the insertion protrusion 110 and the front end of the receiving protrusion 521 are tapered, the insertion protrusion 110 can be easily inserted into the insertion space 523 .

The description of the present invention described above is for illustration, and those of ordinary skill in the art to which the present invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a dispersed form, and likewise components described as distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the following claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention.

In the present invention, since it is possible to stably and conveniently secure a tissue area for pathological examination that is not damaged by staples in the tissue of the organ to be removed, cutting of an organ in abdominal and thoracic organ surgery such as cutting cancer tissue and suturing the cut site And it can be widely used in surgical staple devices that are often used for anastomosis.

Claims

A surgical staple device comprising: a loading unit having a cutter for excising body tissue and a staple for sealing the excision site; and a handle unit to which the loading unit is detached and for controlling the operation of the loading unit,

The handle unit is

handle case part;

a drive shaft portion provided to reciprocate in the front-rear direction inside the handle case portion and for pushing the cutter forward while moving forward; and

and a locking part disposed adjacent to the front end of the drive shaft and provided so as to be able to move up and down in the handle case to prevent forward movement of the drive shaft,

The locking unit includes an elevating body provided above the front end of the drive shaft to be elevated by an external force, and the vertical movement of the elevating body is guided by the handle case unit.
According to claim 1,

The locking part

It is provided between the elevating body and the handle case portion, the upper end is in close contact with the handle case portion and the lower end is in close contact with the upper portion of the elevating body, characterized in that it has an elevating body elastic member for elastically supporting the elevating body downward. surgical staple device.
3. The method of claim 2,

Surgical staple device, characterized in that the upper portion of the elevating body is formed with a recess into which the lower end of the elastic member of the elevating body is inserted.
The method of claim 1,

an operation handle portion provided to be hingedly rotated on the handle case portion; and

The surgical staple device is provided so as to be hinged to rotate on the operation handle, and includes a clasp that is caught on the lower surface of the drive shaft and pushes the drive shaft.
5. The method of claim 4,

The locking part

The clasp part is formed to extend downwardly at one end of the elevating body, and when the elevating body is in a lowered state, the lower end is located lower than the lower surface of the drive shaft and moves in close contact with the lower surface of the drive shaft. Surgical staple device, characterized in that it has a guide protrusion for guiding so as to fall from the lower surface of the part.
6. The method of claim 5,

The handle unit is

It is provided to move reciprocally in the front-rear direction inside the handle case part, and when the loading unit is coupled, it is pressed by the loading unit and moves backward while moving the locking part upward, so that the clasp part can push the drive shaft part forward. Surgical staple device, characterized in that it comprises a unlocking portion to enable.
7. The method of claim 6,

The locking part

It has a first inclined protrusion formed to protrude from one end of the elevating body and having a first inclined surface pressed by the unlocking part when the unlocking part is moved rearward,

When the first inclined protrusion is pressed by the unlocking unit and moved upward, the lower end of the guide protrusion is positioned above the lower surface of the drive shaft.
7. The method of claim 6,

It is provided to reciprocate in the front and rear directions in front of the unlocking unit, and when the loading unit is coupled, it is pressurized by the loading unit and moves backward, and includes a block housing unit for pressing the unlocking unit rearward,

A surgical staple device, characterized in that the front end of the unlocking unit is inserted and coupled to the rear end of the block housing unit.
9. The method of claim 8,

The unlocking unit

A body bar provided to reciprocate in the front-rear direction inside the handle case part and having a long hole extending in the front-rear direction;

The surgical staple device, characterized in that it has a body bar elastic member inserted into the long hole, the rear end is in close contact with the handle case, the front end is in close contact with the front end of the long hole to support the body bar elastically.
10. The method of claim 9,

A surgical staple device, characterized in that the locking projection is formed to protrude from the front end of the unlocking unit, and the insertion part into which the locking projection is inserted is formed in the rear end of the block housing.
11. The method of claim 10,

The unlocking part has a first flange formed on the front end of the body bar, the locking projection is formed on the front side,

The block housing unit is formed to face the first flange, the surgical staple device, characterized in that it has a second flange in which the insertion unit is formed on the rear surface.
12. The method of claim 11,

the insert

a first ring-shaped protrusion protruding from the second flange along the circumferential direction;

It is formed to protrude along the circumferential direction on the second flange, and has a second ring-shaped protrusion formed to be spaced apart from the first ring-shaped protrusion to form an insertion groove between the first ring-shaped protrusion and,

The locking projection is a surgical staple device, characterized in that inserted into the insertion groove.
10. The method of claim 9,

The handle case portion has a fixing protrusion extending inward and rearward of the long hole, and the rear end of the elastic member is in close contact with the front end of the fixing protrusion.
10. The method of claim 9,

The handle case part

Surgical staple device, characterized in that it has a pair of body bar guide ribs extending in the front and rear directions from the upper and lower sides of the body bar so that the body bar is inserted to guide the front and rear movement of the body bar.
15. The method of claim 14,

The handle case part

Surgical staple device, characterized in that it has a separation prevention projection formed to protrude from the guide rib to prevent separation of the body bar.
The method of claim 1,

The drive shaft portion has a first fixing groove formed on the upper surface,

The locking unit is inserted into the first fixing groove for a surgical staple device, characterized in that it has a stop projection for restricting the forward movement of the drive shaft.
The method of claim 1,

The drive shaft portion has a second fixing groove recessed in the upper portion,

a rotating bar provided to rotate on the handle case part from an upper side of the second fixing groove;

a protrusion formed protruding from the outer circumferential surface of the rotating bar and inserted into the second fixing groove;

Surgical staple device, characterized in that the protrusion includes an auxiliary locking unit having a rotating bar elastic member for providing an elastic restoring force to constrain the forward movement of the drive shaft by pressing the second fixing groove to the rear.
According to claim 1,

The locking portion has an extension protrusion extending in the vertical direction at both ends of the elevating body,

The handle case portion is formed to extend in the vertical direction so that the extension protrusion is inserted, and the surgical staple device, characterized in that it has a pair of extension protrusion guide ribs for guiding the lifting movement of the extension protrusion.
According to claim 1,

and a connection unit coupled to the front end of the handle unit and from which the loading unit is detachable,

The loading unit has an insertion protrusion protruding from the outer peripheral surface of the rear end,

The connection unit is formed to protrude from the inner circumferential surface of the front end, and is spaced apart along the circumferential direction and has a receiving protrusion for inserting the insertion protrusion,

The insertion protrusion has a rear end that is tapered, and the receiving protrusion has a front end that is tapered.