KR102610685B1 - Staple apparatus for surgical - Google Patents

Abstract

One embodiment of the present invention provides a surgical staple device with simple construction and improved operability and safety. Here, the surgical staple device includes a loading unit having a cutter for cutting body tissue and staples for suturing the resection area, and a handle unit for detaching the loading unit and controlling the operation of the loading unit. As, the handle unit includes a handle case portion, a drive shaft portion, and a locking portion. The drive shaft portion is provided to reciprocate back and forth inside the handle case portion, and pushes the cutter forward while moving forward. The locking portion is disposed adjacent to the front end of the drive shaft portion and is provided in the handle case portion to enable elevation to prevent forward movement of the drive shaft portion. The locking unit includes a lifting body that can be raised and lowered by an external force on the upper side of the front end of the drive shaft portion, and the up and down movement of the lifting body is guided by the handle case portion.

Description

Surgical staple device {STAPLE APPARATUS FOR SURGICAL}

The present invention relates to a surgical staple device, and more specifically, to a surgical staple device with simple construction and improved operability and safety.

Surgical staple devices are used to clamp or cut tissue and to staple the clamped or cut tissue. As such, a surgical staple device has mechanisms for clamping or cutting tissue and mechanisms for driving staples through tissue.

And, the surgical staple device has a configuration of a plurality of triggers and a handle along with complex mechanisms to provide clamping or proper stapling of cut tissue.

However, this complex mechanism can be a potential cause of device failure or user confusion. Additionally, such a complex mechanism increases the number of parts, making the configuration more complex, and may also cause the manufacturing process to become more complicated.

Additionally, since surgical staple devices are used in surgical operations, they should be operated to clamp or cut tissue or staple cut tissue only when intended by the user. Therefore, there is a need for a surgical staple device with improved operability and safety without having a complicated mechanism.

Republic of Korea Patent Publication No. 2020-0126409 (published on November 6, 2020)

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

The technical problem to be achieved by the present invention is not limited to the technical problem mentioned above, and other technical problems not mentioned can be clearly understood by those skilled in the art from the description below. There will be.

In order to achieve the above technical problem, an embodiment of the present invention includes a loading unit having a cutter for cutting body tissue and staples for suturing the cut area, and a device for detaching the loading unit and controlling the operation of the loading unit. A surgical staple device including a handle unit for, wherein the handle unit includes a handle case portion; a drive shaft portion provided inside the handle case portion to reciprocate in a forward and backward direction, and pushing the cutter forward while moving forward; and a locking portion disposed adjacent to the front end of the drive shaft portion and provided to be capable of being raised and lowered on the handle case portion to prevent forward movement of the drive shaft portion, and the locking portion is configured to respond to external force above the front end of the drive shaft portion. It includes a lifting body that is provided to be capable of being raised and lowered, wherein the vertical movement of the lifting body is guided by the handle case portion, the locking portion is formed to extend downward at one end of the lifting body, and the lifting body is lowered. A surgical staple device, wherein the lower end is located lower than the lower surface of the drive shaft and has a guiding protrusion that guides the latch part, which is moved in close contact with the lower surface of the drive shaft, away from the lower surface of the drive shaft when in the state. provides.

In an embodiment of the present invention, the locking part is provided between the lifting 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 lifting body to elastically push the lifting body downward. It may have a first elastic member supporting it.

In an embodiment of the present invention, a groove into which the lower end of the first elastic member is inserted may be formed in the upper part of the lifting body.

In an embodiment of the present invention, an operating handle portion provided to be hinged and rotated on the handle case portion; And it may include a latch part that is provided to be hinged and rotated on the operating handle part, and hooks on a lower surface of the drive shaft part to push the drive shaft part.

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In an embodiment of the present invention, the handle unit is provided to reciprocate back and forth inside the handle case portion, and when the loading unit is coupled, it is pressed by the loading unit and moves backward to move the locking unit upward. The latch portion may include an unlocking portion that allows the drive shaft portion to be pushed forward.

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

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 that is inserted into the first fixing groove and restricts the forward movement of the drive shaft portion.

In an embodiment of the present invention, the drive shaft portion has a second fixing groove recessed at the top, a rotary bar provided to rotate on the handle case portion above the second fixing groove, and an outer circumferential surface of the rotary bar. An auxiliary locking unit having a protrusion formed to protrude and inserted into the second fixing groove, and a second elastic member in which the protrusion presses the second fixing groove backward and provides an elastic restoring force to constrain the forward movement of the drive shaft unit. It can be included.

In an embodiment of the present invention, the locking portion has extension protrusions extending in a vertical direction at both ends of the lifting body, and the handle case portion is formed extending in a vertical direction so that the extension protrusions are inserted, and the elevating and lowering portion of the extension protrusions It may have a pair of guide ribs to guide movement.

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 positioned lower than the lower surface of the drive shaft, so even if the latch part moves forward, the guide protrusion is such that the pusher remains on the lower surface of the drive shaft. It can guide you away from the. Accordingly, the latch portion may not be able to push the drive shaft portion forward.

In addition, according to an embodiment of the present invention, if the loading unit is not coupled to the handle unit, the pusher cannot push the drive shaft unit forward, so the user may unintentionally operate the operating handle unit in a state in which the loading unit is not coupled. Even if you pull it, the cutter and staples in the loading unit may not work.

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

Figure 1 is a perspective view showing a surgical staple device according to an embodiment of the present invention.
Figure 2 is a perspective view showing the interior of the handle unit in the surgical staple device according to an embodiment of the present invention.
Figure 3 is a perspective view showing the handle case part in Figure 2 removed.
Figures 4 and 5 are perspective views showing the drive shaft portion of the surgical staple device according to an embodiment of the present invention.
Figures 6 and 7 are perspective views showing the locking portion of the surgical staple device according to an embodiment of the present invention.
Figure 8 is a perspective view showing a portion of the handle case portion of the surgical staple device according to an embodiment of the present invention.
FIG. 9 is a perspective view showing part “A” of FIG. 8.
Figure 10 is an exemplary diagram for explaining the operation of the stopper portion and the latch portion in the surgical staple device according to an embodiment of the present invention.
Figure 11 is a perspective view centered on the auxiliary locking portion of the surgical staple device according to an embodiment of the present invention.
Figure 12 is a perspective view centered on the unlocking portion of the surgical staple device according to an embodiment of the present invention.
Figure 13 is an exemplary diagram 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 14 is an exemplary diagram for explaining the operation of the latch portion in a state in which the locking portion is raised in the surgical staple device according to an embodiment of the present invention.

Hereinafter, the present invention will be described with reference to the attached drawings. However, the present invention may be implemented in various different forms and, therefore, is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts that are not related to the description are omitted, and similar parts are given similar reference numerals throughout the specification.

Throughout the specification, when a part is said to be "connected (connected, contacted, combined)" with another part, this means not only "directly connected" but also "indirectly connected" with another member in between. "Includes cases where it is. Additionally, when a part is said to “include” a certain component, this does not mean that other components are excluded, but that other components can be added, unless specifically stated to the contrary.

The terms used herein are only used to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as “comprise” or “have” are intended to indicate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

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

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

As shown in Figure 1, the surgical staple device includes a loading unit 100 having a cutter (not shown) for cutting body tissue and staples (not shown) for suturing the resection area, and the loading unit 100. It may be detached and include a handle unit 200 for controlling the operation of the loading unit 100. The loading unit 100 is not specifically limited as long as it has cutters and staples that implement the functions described above. Below, the handle unit 200 will be described in detail.

Figure 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, Figure 3 is a perspective view showing the handle case portion removed in Figure 2, and Figures 4 and 5 are the present invention. This is a perspective view showing the drive shaft portion of a surgical staple device according to an embodiment of.

As shown in Figures 1 to 5, the handle unit 200 includes a handle case part 210, a drive shaft part 220, an operating handle part 230, a latch part 240, and a locking part 250. can do.

The handle case portion 210 may form an external 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 portion. They can be formed symmetrically to each other.

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

The drive shaft unit 220 may be provided inside the handle case unit 210 to reciprocate in the forward and backward directions. 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 portion 220 and may be formed to extend in the front-back 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 forward force is input. That is, when a force applied forward is applied to the first ratchet 223, the shaft body 221 can be moved forward. On the other hand, force applied rearward may not be input to the first ratchet 223, and the shaft body 221 may not be moved rearward.

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

A connecting rod 510 connected to the cutter of the loading unit 100 may be coupled to the front end of the drive shaft portion 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 excise body tissue, and staples can be fired to suture the tissue.

Additionally, the drive shaft unit 220 may have a second inclined surface 225, an inclined groove 226, and a stopping 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 at the rear of the second inclined surface 225 on the front end lower surface 222 of the shaft body 221. In addition, the locking protrusion 227 may be formed behind the inclined groove 226 on the front end lower surface 222 of the shaft body 221.

Additionally, the drive shaft unit 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 portion 220. The second fixing groove 229 may be formed at the rear of the first fixing groove 228 at the top of the drive shaft portion 220. The second fixing groove 229 may be recessed over the top and side surfaces of the drive shaft portion 220. And, the third fixing groove 229a may be formed behind the second fixing groove 229 on the upper surface of the drive shaft portion 220.

The upper portion of the operating handle portion 230 may be provided inside the handle case portion 210, and the remaining portion may extend to the outside of the handle case portion 210. A first hinge hole 231 may be formed through the upper part of the operating handle unit 230. Additionally, the handle case portion 210 may have a first hinge axis 212 (see FIG. 8), and the first hinge axis 212 may be coupled to the first hinge hole 231. Through this, the operating handle unit 230 can be hinged and rotated around the first hinge axis 212.

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

The latch unit 240 may be coupled to the upper end of the operating handle unit 230 by the second hinge axis 241, and may be hinged and rotated around the second hinge axis 241. The second hinge shaft 241 may be provided with a torsion spring (not shown) that provides elastic force to rotate the front end of the latch portion 240 upward.

The locking portion 250 may be disposed adjacent to the front end of the drive shaft portion 220 and may be provided to be capable of being raised and lowered on the handle case portion 210.

The locking part 250 may be provided to be lifted up and down by an external force on the upper side of the front end of the drive shaft part 220, and the vertical movement of the locking part 250 may be guided by the handle case part 210.

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

As shown in FIGS. 3 and 6 to 9, the locking portion 250 includes an elevating body 251, an extension protrusion 254, a guide protrusion 252, a first elastic member 253, and a first inclined protrusion ( 256).

The lifting body 251 may be provided on the upper front end of the drive shaft portion 220. The lifting body 251 may be formed to extend across the drive shaft portion 220.

The extension protrusions 254 may be formed to extend in the vertical direction at both ends of the lifting body 251. And, the handle case portion 210 may have first guide ribs 213a and 213b. The first guide ribs 213a and 213b may be formed as a pair so that the extension protrusion 254 is inserted, and may extend in the vertical direction. Since the front of the extension protrusion 254 may be in close contact with the front first guide rib 213a, and the rear of the extension protrusion 254 may be in close contact with the rear first guide rib 213b, the first guide rib (213b) 213a, 213b) may guide the lifting and lowering movement of the extension protrusion 254.

The guide protrusion 252 may be formed to extend downward at one end of the lifting body 251. When the lifting 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 portion 220. And, when the lifting 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 portion 220.

The first elastic member 253 may be provided between the lifting body 251 and the handle case portion 210. The upper end of the first elastic member 253 may be in close contact with the handle case portion 210, and the lower end may be in close contact with the upper part of the lifting body 251, and the first elastic member 253 may be attached to the lower side of the lifting body 251. You can support it with elasticity. A groove 255 into which the lower end of the first elastic member 253 is inserted may be formed in the upper part of the lifting body 251.

The first inclined protrusion 256 may be formed to protrude from one end of the lifting 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 located above the lower end of the guide protrusion 252.

In addition, the locking unit 250 may have a stop protrusion 258. The stop protrusion 258 may be formed to extend rearward from the lower part of the lifting 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 portion 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 portion 220 may be restrained from moving forward.

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

The stopper unit 270 may be provided on the lower side of the drive shaft unit 220 at the rear of the upper end of the operating handle unit 230. The stopper unit 270 may be elastically supported to be lowered by the operating spring 273.

The handle case portion 210 may have a pair of second guide ribs 214a and 214b, and the stopper portion 270 may be provided in the space between the second guide ribs 214a and 214b. The second guide ribs 214a and 214b may extend in the vertical direction, and the stopper portion 270 may be moved up and down in the space between the second guide ribs 214a and 214b. In the space between the second guide ribs 214a and 214b, the front of the stopper unit 270 may be in close contact with the front second guide rib 214a, and the rear of the stopper unit 270 may be in close contact with the rear second guide. It may be in close contact with the rib 214b. Therefore, when the stopper unit 270 moves up and down, the second guide ribs 214a and 214b can guide the stopper unit 270 to move up and down stably.

Additionally, the handle case portion 210 may have a fixing protrusion 214c. The fixing protrusion 214c may be formed to protrude above the space between the second guide ribs 214a and 214b. The fixing protrusion 214c is formed in the vertical direction on the stopper part 270 and can be inserted into the long hole 275 where the operating spring 273 is provided on the inside, and the upper end of the operating spring 273 is of the fixing protrusion 214c. It can adhere closely to the bottom. Since the fixing protrusion 214c maintains a fixed state even when the stopper unit 270 is raised and lowered, the operating spring 273 can stably and elastically support the stopper unit 270 downward.

When the drive shaft unit 220 is located at the rearmost position of the handle case unit 210 (hereinafter referred to as “basic state”), the stopper 271 of the stopper unit 270 is positioned at the rearmost position of the handle case unit 210. It may be provided vertically below the second ratchet 224.

When the upper part of the operation handle unit 230 is pulled backward by the handle spring 233, the upper part of the rotating operation handle unit 230 may come into close contact with the stopper unit 270 and stop rotating. A pressing protrusion 232 may be formed at the upper end of the operating handle unit 230, and when the pressing protrusion 232 presses the second inclined protrusion 272 of the stopper unit 270, the operating handle unit 230 The rotation of stops, 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 portion 220 may be restrained from moving forward. Hereinafter, as shown in FIG. 3, the state in which the pressing protrusion 232 of the operating handle unit 230 is in close contact with the second inclined protrusion 272 and the rotation of the operating handle unit 230 has stopped is referred to as the “initial state”.

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

As shown in (a) of FIG. 10, when the drive shaft portion 220 is in the basic state and the operating handle portion 230 is in the initial state, the pressing protrusion 232 of the operating handle portion 230 is the second inclined protrusion. (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 restrained from moving forward. This can provide the effect of preventing the drive shaft portion 220 from moving forward unintentionally.

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

Then, when the operating handle unit 230 is pulled by the user as shown in (b) of FIG. 10 (A1), that is, the upper part of the operating handle unit 230 moves forward around the first hinge axis 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 operating spring 273, and the stopper 271 is separated from the second ratchet 224 and the coupling can be released.

At the same time, since the rear end of the latch portion 240 is also separated from the second guide rib 214a, restraint by the second guide rib 214a can also be released. Then, the front end of the latch unit 240 may rotate upward due to the elastic restoring force of the torsion spring, and the pusher 242 may come into close contact with the lower surface 222 of the drive shaft unit 220. Then, as the rotation (A1) of the operating handle unit 230 continues, the pusher 242 moves forward and is caught by the locking protrusion 227 of the drive shaft unit 220, moving the drive shaft unit 220 forward. can be pushed out.

Thereafter, when the user's force pulling the operation handle unit 230 is removed, the operation handle unit 230 may be rotated back to its initial state by the elastic restoring force of the handle spring 233 (see FIG. 3). At this time, since the drive shaft unit 220 has already moved forward a certain distance, the stopper unit 271 cannot be coupled to the second ratchet 224 even if the stopper unit 270 is raised. Then, when the operating handle portion 230 is pulled again 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 portion 220 may be moved forward.

Figure 11 is a perspective view centered on the auxiliary locking portion of the surgical staple device according to an embodiment of the present invention.

As shown in FIGS. 8 and 11, the surgical staple device may include an auxiliary locking portion 290. The auxiliary locking part 290 may have a rotating bar 291, a protrusion 293, and a second elastic member 294.

The rotating bar 291 may be provided to cross the drive shaft unit 220 on the upper side of the second fixing groove 229 of the drive shaft unit 220. Both ends of the rotary bar 291 may be coupled to the third hinge axis 218 of the handle case portion 210 to enable rotation.

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

The second elastic member 294 may be provided to surround the rotating bar 291. One end of the second elastic member 294 may be coupled to the cut groove 292 formed in the rotating bar 291, and the other end may be coupled to the third fixing groove 229a. The second elastic member 294 may provide an elastic restoring force that causes the protrusion 293 coupled to the second fixing groove 229 to press the second fixing groove 229 backward. Through this, forward movement of the drive shaft portion 220 may be restricted. When a force greater than the elastic restoring force of the second elastic member 294 is applied forward to the drive shaft portion 220, the drive shaft portion 220 can be moved forward and the rotary bar 291 can be rotated. there is.

And, the surgical staple device may include an unlocking unit 260.

Figure 12 is a perspective view centered on the unlocking part of the surgical staple device according to an embodiment of the present invention, and Figure 13 is a perspective view showing the operation of the latch portion in a state in which the locking portion is lowered in the surgical staple device according to an embodiment of the present invention. It is an exemplary diagram for explaining, and Figure 14 is an exemplary diagram for explaining the operation of the clasp portion in a state in which the locking portion is raised in the surgical staple device according to an embodiment of the present invention.

As shown in FIGS. 1, 2, and 12 to 14, the unlocking unit 260 may be provided inside the handle case unit 210 to reciprocate in the forward and backward direction. When the loading unit 100 is coupled to the handle unit 200, the block housing 310 is pressed by the loading unit 100 and may be moved rearward. Then, the unlocking unit 260 may be pressed by the block housing 310 and moved rearward.

When the loading unit 100 is not coupled to the handle unit 200, as shown in FIG. 13, the rear end of the unlocking unit 260 does not contact the first inclined surface 257 of the locking unit 250. , Or, even if it comes into contact with the first inclined surface 257, it may be in a state where the first inclined surface 257 is not pressed. Then, the lower end of the guide protrusion 252 can be positioned lower than the lower surface of the drive shaft part 220 due to the elastic restoring force of the first elastic member 253, and the stopping protrusion 227 can be covered. Therefore, as shown in (b) of FIG. 13, when the pusher 242 moves near the latch portion 240, the guide protrusion 252 allows the pusher 242 to move from the lower surface 222 of the drive shaft portion 220. It may be guided to fall, and the latch portion 240 may not be able to push the drive shaft portion 220 forward. Here, the first elastic member 253 may have an elastic restoring force greater than that of the torsion spring that rotates the latch unit 240.

Meanwhile, as shown in FIG. 14, when the unlocking unit 260 is pressed and moved rearward as the loading unit 100 is coupled to the handle unit 200, the unlocking unit 260 is moved to the first inclined surface 257. ) can be pushed up by applying pressure. Then, the locking part 250 can be moved upward, and the lower end of the guide protrusion 252 can be positioned above the lower surface 222 of the drive shaft part 220. Accordingly, the locking protrusion 227 of the drive shaft portion 220 may be exposed, and the pusher 242 of the latch portion 240 pushes the locking protrusion 227, causing the drive shaft portion 220 to move forward. It can be done as much as possible.

In this way, if the loading unit 100 is not coupled to the handle unit 200, the pusher 242 cannot push the drive shaft portion 220 forward, so in the state where the loading unit 100 is not coupled. Even if the user unintentionally pulls the operating handle 230, the cutter and staple of the loading unit 100 may not operate.

The description of the present invention described above is for illustrative purposes, and those skilled in the art will understand that the present invention can be easily modified into other specific forms without changing the technical idea or essential features of the present invention. will be. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive. For example, each component described as unitary may be implemented in a distributed manner, and similarly, components described as distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the claims described below, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention.

100: loading unit 200: handle unit
210: handle case part 220: drive shaft part
224: second ratchet 230: operating handle portion
240: latch part 250: locking part
260: unlocking part 270: stopper part
290: Auxiliary locking part 310: Block housing
510: connecting rod

Claims (10)

A surgical staple device comprising a loading unit having a cutter for cutting body tissue and staples for suturing the cut site, and a handle unit for detaching the loading unit and controlling the operation of the loading unit,
The handle unit is
Handle case part;
a drive shaft portion provided inside the handle case portion to reciprocate in a forward and backward direction, and pushing the cutter forward while moving forward;
a locking portion disposed adjacent to the front end of the drive shaft portion and provided to enable elevation on the handle case portion to prevent forward movement of the drive shaft portion;
an operating handle portion provided to be hinged and rotated on the handle case portion; and
It is provided to be hinged and rotated on the operating handle part, and includes a latch part that is hooked on the lower surface of the drive shaft part and pushes the drive shaft part,
The locking part is
an elevating body that is provided to be capable of being raised and lowered by an external force at an upper side of the front end of the drive shaft portion and whose up and down movement is guided by the handle case portion;
The latch portion is formed to extend downwardly at one end of the lifting body, and when the lifting 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. A surgical staple device characterized by having a guide protrusion that guides it away from the lower surface of the bone. According to paragraph 1,
The locking part is
It is provided between the lifting body and the handle case part, and 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 lifting body and has a first elastic member to elastically support the lifting body downward. A surgical staple device. According to paragraph 2,
A surgical staple device, characterized in that a groove is formed in the upper part of the lifting body into which the lower end of the first elastic member is inserted. delete delete According to paragraph 1,
The handle unit is
It is provided to reciprocate back and forth inside the handle case portion, and when the loading unit is coupled, it is pressed by the loading unit and moves rearward, thereby moving the locking portion upward so that the latch portion can push the drive shaft portion forward. A surgical staple device, characterized in that it includes an unlocking part that allows. According to clause 6,
The locking part is
It has a first inclined protrusion that protrudes from one end of the lifting body and has a first inclined surface that is pressed by the unlocking unit when the unlocking unit is moved rearward,
When the first inclined protrusion is pressed and moved upward by the unlocking unit, the lower end of the guide protrusion is located higher than the lower surface of the drive shaft portion. According to paragraph 1,
The drive shaft portion has a first fixing groove formed on the upper surface,
A surgical staple device, wherein the locking portion has a stop protrusion that is inserted into the first fixing groove and restricts forward movement of the drive shaft portion. According to paragraph 1,
The drive shaft portion has a second fixing groove recessed at the top,
a rotating bar provided to rotate on the handle case portion above the second fixing groove;
a protrusion formed on the outer peripheral surface of the rotating bar and inserted into the second fixing groove;
A surgical staple device, wherein the protrusion includes an auxiliary locking portion having a second elastic member that presses the second fixing groove rearward and provides an elastic restoring force to constrain the forward movement of the drive shaft portion. According to paragraph 1,
The locking portion has extension protrusions extending in a vertical direction at both ends of the lifting body,
The handle case portion is formed to extend in a vertical direction so that the extension protrusion is inserted, and has a pair of guide ribs for guiding the upward and downward movement of the extension protrusion.

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