Staple cartridge for surgical instrument and surgical instrument equipped with same

Abstract

A staple cartridge for a surgical instrument, the staple cartridge for a surgical instrument including a tip tool capable of rotating in at least one direction, the staple cartridge comprising: a housing; a cover which covers one surface of the housing and in which a staple hole through which the staple accommodated inside the housing can be discharged to the outside is formed; a working member provided inside the housing and formed so as to be movable with respect to the housing in a first direction, which is a longitudinal direction of the housing; a leading-out member on which the staples are disposed, and which moves upward from the bottom of the housing toward the top of the housing by the movement of the working member, thereby discharging the staples to the outside; and an elastic member interposed between the housing and the cover and providing an elastic force in a direction in which the lead-out member is directed downward.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority, based on 35 U.S.C. §119, to Korean Patent Application No. 10-2023-0162392 filed on November 21, 2023 in the Korean Intellectual Property Office, which is incorporated herein in its entirety. Technical Field

[0003] The present invention relates to a surgical instrument, in particular to a surgical instrument which is installed on a robot arm or can be manually operated and is used for laparoscopic surgery or various surgeries. Background Art

[0004] In medicine, surgery refers to the use of medical instruments to cut or open or manipulate the skin, mucous membranes, or other tissues to treat diseases. In particular, laparotomy, which involves cutting the skin of the surgical site and opening it for treatment, plastic surgery, or removal of internal organs, can cause problems such as bleeding, side effects, pain for the patient, and scarring. Therefore, in recent years, as an alternative, surgery that is performed by forming a predetermined hole in the skin and inserting only medical instruments such as a laparoscope, surgical instruments, and microsurgery microscopes, or surgery using a robot, has attracted much attention.

[0005] A surgical instrument is a tool that a doctor uses a predetermined driving unit to directly operate the end tool by hand or use a robot arm to operate the end tool to perform surgery on the surgical site, wherein the end tool is equipped at one end of a shaft that passes through a hole drilled in the skin. The end tool equipped on the surgical instrument performs rotation, gripping, cutting, etc. through a predetermined structure.

[0006] The above-mentioned background technology is technical information possessed by the inventor in order to derive the present invention or technical information obtained in the process of deriving the present invention, and is not necessarily known technology disclosed to the public before applying for the present invention. Summary of the invention

[0007] The object of the present invention is to provide a staple magazine and a surgical instrument comprising the staple magazine, wherein, in a surgical instrument mounted on a robot arm or manually operable for laparoscopic surgery or various surgeries, the staple magazine automatically retracts movable suture staples that are not fixed to body tissues.

[0008] Other aspects will be described in part below and in part will be obvious based on the description or may be learned by practicing embodiments of the invention.

[0009] The present invention provides a nail magazine of a surgical instrument, in which the nail magazine of the surgical instrument has an end tool that can rotate in at least any one direction, includes: a shell; a cover, which covers one surface of the shell and is formed with a suture nail hole that can discharge the suture nail accommodated in the interior of the shell to the outside; a working member, which is arranged in the interior of the shell and is formed to be movable relative to the shell along the longitudinal direction of the shell, that is, the first direction; a lead-out member, on which the suture nail is arranged, and through the movement of the working member, the lead-out member moves upward from the bottom of the shell toward the top of the shell, thereby discharging the suture nail to the outside; and an elastic member, which is interposed between the shell and the cover and provides elastic force in the direction of causing the lead-out member to move downward.

[0010] In one embodiment of the present invention, the elastic member may be fixedly coupled to the lead-out member.

[0011] In one embodiment of the present invention, when the lead-out member moves upward toward the top of the housing, the elastic member is compressed by the cover or the external structure, thereby providing elastic force in a direction that moves the lead-out member downward.

[0012] In one embodiment of the present invention, when the elastic member is fixedly coupled to the shell and the lead-out member moves upward toward the top of the shell, the elastic member is compressed by the lead-out member, thereby providing elastic force in a direction that moves the lead-out member downward.

[0013] In one embodiment of the present invention, one end of the elastic member is fixedly coupled to the lead-out member, and the other end of the elastic member is fixedly coupled to the shell, so that when the lead-out member moves upward, the elastic member can provide elastic force in a direction that moves the lead-out member downward.

[0014] In one embodiment of the present invention, the elastic force provided by the elastic member to the lead-out member may be greater than the binding force between the suture staple and the lead-out member.

[0015] In one embodiment of the present invention, the elastic member may be formed as a whole with the lead-out member.

[0016] In one embodiment of the present invention, the elastic member may be formed as a separate member distinguished from the lead-out member and coupled to the lead-out member.

[0017] In one embodiment of the present invention, the working member may include one or more wedges, the wedges including a first inclined surface, the first inclined surface being formed so that the height of the proximal end side of the nail magazine is higher than the height of the distal end side of the nail magazine, wherein the proximal end side of the nail magazine is in a direction close to the connecting portion, and the distal end side of the nail magazine is in a direction away from the connecting portion.

[0018] In one embodiment of the present invention, the wedge may include a second inclined surface formed starting from a proximal end side of the first inclined surface and with a distal end side having a lower height than the proximal end side.

[0019] In one embodiment of the present invention, when the working member moves along the first direction toward the distal end side of the nail magazine, the lead-out member contacts the first inclined surface and moves upward, and when the working member moves along the first direction toward the proximal end side of the nail magazine, the lead-out member is able to contact the second inclined surface and move downward.

[0020] In one embodiment of the present invention, the lead-out member includes a first contact surface and a second contact surface, wherein the first contact surface contacts the first inclined surface of the wedge piece, and the second contact surface contacts the second inclined surface of the wedge piece, and the first contact surface and the second contact surface can be inclined surfaces, and the inclined surfaces are formed so that the height of the proximal end side of the nail magazine is higher than the height of the distal end side.

[0021] In one embodiment of the present invention, when the working member moves along the first direction toward the distal end side of the nail magazine, the wedge-shaped member of the working member pushes the multiple suture staples in the nail magazine upward in sequence to perform the suturing action, and the blade can move along the first direction toward the distal end side of the nail magazine while performing the cutting action.

[0022] In one embodiment of the present invention, the staple hole of the cover may form a recess capable of accommodating a staple in a region adjacent to the inlet.

[0023] In one embodiment of the present invention, the recess may be formed to have a width wider than that of the staple hole and a preset depth.

[0024] In one embodiment of the present invention, the recess is capable of accommodating a staple that has failed in staple suturing and is released from the pull-out member.

[0025] One embodiment of the present invention provides a nail magazine of a surgical instrument, characterized in that the surgical instrument is equipped with an end tool that can rotate along at least one direction, wherein the nail magazine of the surgical instrument includes: a shell; a cover, which covers one surface of the shell and is formed with a suture nail hole that can discharge the suture nail accommodated in the interior of the shell to the outside; a working member, which is arranged in the interior of the shell and is formed to be movable relative to the shell along the longitudinal direction of the shell, that is, the first direction; a lead-out member, on which the suture nail is arranged, and through the movement of the working member, it moves upward from the bottom of the shell toward the top of the shell, thereby discharging the suture nail to the outside, wherein the lead-out member includes a placement portion, which supports the suture nail and the suture nail is placed thereon, and the suture nail is fixed to the placement portion.

[0026] In one embodiment of the present invention, the seating portion includes one or more fasteners, and when the suture staple is seated in the seating portion, the fasteners interfere with the suture staple, and after the suture staple is seated in the seating portion, the fasteners can fix the suture staple by their elasticity.

[0027] In one embodiment of the present invention, an adhesive may be applied between the placement portion and the suture staple to fix the suture staple to the placement portion.

[0028] In one embodiment of the present invention, the adhesive is a water-soluble adhesive, and when the staple and the lead-out member come into contact with body tissue, the adhesive force of the adhesive may be lost due to moisture in the body tissue.

[0029] In one embodiment of the present invention, liquid may be applied between the placement portion and the suture staple, so that the suture staple is fixed to the placement portion by the surface tension of the liquid.

[0030] In one embodiment of the present invention, the lead-out member may include a magnetic body and fix the suture staple to the seating portion by magnetic force.

[0031] In one embodiment of the present invention, the placement portion may form a microstructure, so that the suture staple is fixed to the placement portion by adsorption.

[0032] In one embodiment of the present invention, the seating portion forms a groove in the longitudinal direction, and the lower end portion of the suture staple placed in the seating portion includes a bent section, which is transversely bent relative to the longitudinal direction in at least one region, and when the suture staple is inserted into the groove of the seating portion, the bent section is elastically deformed, and the force of the bent section to restore to its original state can fix the suture staple to the seating portion.

[0033] In one embodiment of the present invention, the suture staple includes a lower end portion arranged in the longitudinal direction of the placement portion, the placement portion is formed with a groove, the groove includes a curved section that is transversely curved relative to the longitudinal direction in at least one region, and when the suture staple is inserted into the groove of the placement portion, the lower end portion of the suture staple is elastically deformed, and the suture staple can be fixed to the placement portion by the force of the lower end portion wanting to restore to its original state.

[0034] In one embodiment of the present invention, the seating portion includes a fastener that can be deformed by an external force, and the fastener is deformed to be fastened with the suture staple while the lead-out member moves upward, thereby fixing the suture staple to the seating portion.

[0035] In one embodiment of the present invention, the suture nail hole of the cover may be formed with an inclined surface so that the inner width becomes narrower toward the upper end of the suture nail hole compared to the lower end of the suture nail hole.

[0036] In one embodiment of the present invention, when the lead-out member moves upward, the fastener contacts the inclined surface, and the fastener may be deformed by an external force caused by the inclined surface.

[0037] In one embodiment of the present invention, the staple hole of the cover may form a recess capable of accommodating a staple in a region adjacent to the inlet.

[0038] In one embodiment of the present invention, the recess may be formed to have a width wider than that of the staple hole and a preset depth.

[0039] In one embodiment of the present invention, the recess is capable of accommodating a staple that has failed in staple suturing and is released from the pull-out member.

[0040] One embodiment of the present invention provides a nail magazine of a surgical instrument, characterized in that the surgical instrument is equipped with an end tool that can rotate along at least one direction, wherein the nail magazine of the surgical instrument includes: a shell; a cover, which covers one surface of the shell and is formed with a suture nail hole that can discharge the suture nail accommodated in the interior of the shell to the outside; a working member, which is arranged in the interior of the shell and is formed to be movable relative to the shell along the longitudinal direction of the shell, that is, the first direction; a lead-out member, which accommodates the suture nail and moves upward from the bottom of the shell toward the top of the shell through the movement of the working member, thereby discharging the suture nail to the outside; and an elastic member, which is interposed between the shell and the cover and provides elastic force in a direction that causes the lead-out member to move downward, wherein the lead-out member includes a placement portion, which supports the suture nail and the suture nail is placed thereon, and the suture nail is simply fixed to the placement portion.

[0041] Other aspects, features, and advantages besides those described above will become apparent from the following drawings, claims, and detailed description of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the inventive concept.

[0043] Figure 1 1 is a perspective view showing a surgical instrument to which the nail cartridge according to the first embodiment of the present invention is applied.

[0044] Figure 2 It is shown Figure 1 A perspective view of a distal end tool of a surgical instrument.

[0045] Figure 3 It is shown Figure 1 A perspective view of a first jaw and a staple cartridge of a surgical instrument.

[0046] Figure 4 It is shown Figure 3 Combination perspective view of the nail magazine.

[0047] Figure 5 It is shown Figure 3 An exploded perspective view of some components of the nail magazine.

[0048] Figure 6 It is shown Figure 3 A perspective view of the working components of the nail magazine.

[0049] Figure 7 It is shown Figure 3 A perspective cross-sectional view of a nail magazine.

[0050] Figure 8 It is shown Figure 3 Side cross-sectional view of the nail magazine.

[0051] Fig. 9 (a) to Fig. 9 (c) shows Figure 2 A side cross-sectional view of the various parts of the end tool for the stapling action.

[0052] Fig.10 It is shown as a whole Figure 2 Side cross-sectional view of the stapling action of the end tool.

[0053] Fig.11 It is shown Figure 5 An enlarged perspective view of the lead-out member and the suture staple.

[0054] Fig.12 yes Fig.11 Side view of the lead-out member and suture staple.

[0055] Fig.13 It is an enlarged perspective view showing a nail cartridge and a pull-out member of a surgical instrument according to a first modified example of the first embodiment of the present invention.

[0056] Fig.14 (a) to Fig.14 (b) is a perspective view showing a wedge and a lead-out member of a nail magazine of a surgical instrument according to a second modified example of the first embodiment of the present invention.

[0057] Fig.15 and Fig.16 It is shown Fig.14 (a) to Fig.14 (b) A perspective view of the lead-out member.

[0058] Fig.17 (a) is a perspective view showing a lead-out member and suture staples of a staple cartridge of a surgical instrument according to a second embodiment of the present invention.

[0059] Fig.17 (b) shows Fig.17 (a) is a cross-sectional view of a portion of a cross section of a lead-out member and a suture staple.

[0060] Fig.18 It is a perspective view showing a lead-out member of a staple cartridge and suture staples of a surgical instrument according to a first modified example of the second embodiment of the present invention.

[0061] Fig.19 1 is a perspective view showing a nail cartridge and a pull-out member of a surgical instrument according to a second modified example of the second embodiment of the present invention.

[0062] Fig. 20 It is along Fig.19 A cross-sectional view taken along line I-I'.

[0063] Fig.21 1 is an enlarged perspective view showing a staple cartridge of a surgical instrument according to a third embodiment of the present invention.

[0064] Fig. 22 It is shown Fig.21 A plan view of the cover of the nail magazine. DETAILED DESCRIPTION

[0065] Embodiments of the present invention will now be described in detail, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements. In this regard, embodiments of the present invention may have different forms and should not be construed as being limited to those described herein. Therefore, embodiments of the present invention are described below only by reference to the accompanying drawings to illustrate various aspects thereof. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0066] Hereinafter, the following embodiments will be described in detail with reference to the accompanying drawings. When describing with reference to the accompanying drawings, the same or corresponding components are marked with the same figure symbols and their repeated description is omitted.

[0067] Since various modifications can be made to this embodiment, specific embodiments will be shown in the drawings and described in detail in the specific embodiments. The effects and features of this embodiment and methods for achieving them will become clear by referring to the drawings and the detailed description below. However, this embodiment is not limited to the embodiments disclosed below and can be implemented in various forms.

[0068] When describing the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, that detailed description will be omitted.

[0069] In the following embodiments, unless the context clearly states otherwise, singular expressions include plural expressions. Terms such as "first" and "second" can be used to describe various components, but the components should not be limited by the terms. The terms are only used to distinguish one component from another component.

[0070] In the following embodiments, the terms “including” or “having” and the like refer to the presence of features or constituent elements described in the specification, and do not preclude the possibility of adding one or more other features or constituent elements.

[0071] In the following embodiments, when a part of a unit, region, constituent element, etc. is described as being on or over another part, it not only refers to the case where it is directly on the other part but also includes the case where other units, regions, constituent elements, etc. are interposed therebetween.

[0072] In the following embodiments, terms such as “connected” or “coupled” do not necessarily mean a direct and / or fixed connection or coupling of two components, and do not mean to exclude the situation where another component is interposed between the two components, unless the context clearly indicates otherwise.

[0073] In the drawings, the size of the constituent elements may be enlarged or reduced for the convenience of description. For example, the size and thickness of each configuration shown in the drawings are arbitrarily shown for the convenience of description, and therefore the following embodiments are not necessarily limited to the contents of the drawings.

[0074] (First embodiment)

[0075] Figure 1 1 is a perspective view showing a surgical instrument to which a nail cartridge according to a first embodiment of the present invention is applied, Figure 2 It is shown Figure 1 A perspective view of a distal end tool of a surgical instrument.

[0076] See also Figure 1 The surgical instrument 10 according to the first embodiment of the present invention includes an end tool 100 , an operating portion 200 , a power transmission portion (not shown), and a connecting portion 400 .

[0077] Here, the connecting part 400 is formed in a hollow shaft shape, in which one or more wires and electric wires can be accommodated. The operating part 200 is coupled to one end of the connecting part 400, and the end tool 100 is coupled to the other end of the connecting part 400, so that the connecting part 400 can be used to connect the operating part 200 and the end tool 100.

[0078] On the other hand, the operating part 200 is formed at one end of the connecting part 400 and has an interface that the doctor can directly operate, such as a forceps-shaped, rod-shaped, lever-shaped, etc. interface. When the doctor controls it, it will be connected to the corresponding interface, and the end tool 100 inserted into the surgical patient's body will perform the predetermined operation to perform the operation.

[0079] Here, although Figure 1 The operation part 200 is shown to be formed in a handle shape that can be rotated by inserting a finger, but the concept of the present invention is not limited thereto, and it can be an operation part in various forms as long as it is connected to the end tool 100 to be able to control the end tool 100.

[0080] The end tool 100 is formed at the other end of the connection part 400 and is inserted into the surgical site to perform the required operation. As an example of the end tool 100 as described above, Figure 2 A pair of jaws 103 is shown to perform a gripping action. However, the concept of the present invention is not limited thereto, and various surgical devices may also be used as the end tool 100. For example, a configuration such as a single-arm cauterizer may also be used as the end tool. The end tool 100 as described above is connected to the operating part 200 through a power transmission part (not shown), and receives the driving force of the operating part 200 through the power transmission part (not shown), thereby performing the actions required for the operation, such as gripping, cutting, and suturing actions.

[0081] Here, the end tool 100 of the surgical instrument 10 according to the first embodiment of the present invention is formed to be rotatable in one or more directions. For example, the end tool 100 can be formed to rotate around Figure 1 While the Y axis is pitching, Figure 1 The Z-axis performs yaw motion and actuation motion.

[0082] On the other hand, the power transmission part (not shown) connects the operating part 200 and the end tool 100, thereby transmitting the driving force of the operating part 200 to the end tool 100, and may include a plurality of wires, pulleys, links, joints, gears, etc.

[0083] In describing the present invention, the portion close to the user side, ie, the portion close to the operating part 200 is described as a proximal end, and the portion far from the user side, ie, the portion close to the end tool 100 is described as a distal end.

[0084] For example, see Figure 4 , the portion of the staple cartridge 500 close to the operating portion 200 is defined as the proximal portion 501 of the staple cartridge 500, and the portion away from the operating portion 200, that is, the portion close to the end of the end tool 100 is defined and described as the distal portion 502 of the staple cartridge 500. Describing this from another perspective, the proximal portion 501 of the staple cartridge 500 can be described as the portion close to the connecting portion 400, and the distal portion 502 of the staple cartridge 500 is described as the portion away from the connecting portion 400.

[0085] The end tool 100 of the first embodiment of the present invention is provided with a pair of jaws for performing a gripping action, namely, a first jaw 101 and a second jaw 102. Here, the first jaw 101 and the second jaw 102, or the constituent elements including the first jaw 101 and the second jaw 102, can be respectively referred to as the jaw 103.

[0086] In addition, the end tool 100 may include pulleys related to the rotational movement of the first jaw 101 and the second jaw 102.

[0087] Here, although the respective pulleys shown in the drawings are formed parallel to each other, the concept of the present invention is not limited thereto. Each pulley can be formed at various positions suitable for the configuration of the end tool and can also be formed in various sizes suitable for the configuration of the end tool.

[0088] Furthermore, the end tool 100 of the first embodiment of the present invention may include an end tool center 180 and a pitch center 107.

[0089] The rotation shafts 141 and 142 are inserted through the end tool center 180, and at least a part of the pulley axially coupled to the rotation shaft 141 can be accommodated inside the end tool center 180. In addition, the end tool center 180 can accommodate at least a part of the pulley axially coupled to the rotation shaft 142 inside.

[0090] On the other hand, a pulley 131 serving as an end tool pitch pulley can be formed at one end of the end tool center 180. The pulley 131 can be formed integrally with the end tool center 180. That is, a disk-shaped pulley is formed at one end of the end tool center 180, and a groove capable of winding a wire can be formed on its outer circumferential surface. Alternatively, the pulley 131 can be formed as a separate member distinct from the end tool center 180 and coupled to the end tool center 180. A wire (not shown) is coupled to the pulley 131 serving as an end tool pitch pulley, and this pulley 131 performs a pitch action while rotating around the rotation shaft 143.

[0091] The rotation shafts 143 and 144 described later are inserted through the pitch center 107, and the pitch center 107 and the end tool center 180 (and the pulley 131) can be axially coupled through the rotation shaft 143. Therefore, the end tool center 180 and the pulley 131 can be formed to be rotatable relative to the pitch center 107 around the rotation shaft 143.

[0092] In addition, the pitch center 107 may accommodate at least a portion of a pulley coupled to the rotation axis 143 inside. In addition, the pitch center 107 may accommodate at least a portion of a pulley coupled to the rotation axis 144 inside.

[0093] Here, the rotation axis 141 is used as an end tool jaw pulley rotation axis, the rotation axis 142 is used as an end tool jaw auxiliary pulley rotation axis, the rotation axis 143 is used as an end tool pitch rotation axis, and the rotation axis 144 can be used as an end tool pitch auxiliary rotation axis of the end tool 100. One or more pulleys can be respectively inserted into the rotation axis 141, the rotation axis 142, the rotation axis 143, and the rotation axis 144 as described above.

[0094] Here, although not shown in the drawings, the pulleys used as the end tool jaw pulleys may be fixedly coupled to the first jaw 101 and the second jaw 102, respectively, and rotated together with the jaws. The yaw action and actuation action of the end tool 100 are performed according to the rotation of the pulleys. That is, when the pulleys of each jaw rotate in the same direction around the rotation axis 141, the end tool 100 performs a yaw action, and when the pulleys of each jaw rotate in opposite directions around the rotation axis 141, the end tool 100 performs an actuation action.

[0095] Here, the jaw 101 and the pulley may be formed as separate members that are distinguished to be combined with each other, or the jaw 101 and the pulley may also be formed as one-body.

[0096] In the following, it will be described in more detail Figure 1 A nail magazine 500 of the surgical instrument 10.

[0097] Figure 3 It is shown Figure 1 A perspective view of a first jaw and a staple cartridge of a surgical instrument. Figure 4 It is shown Figure 3 Combination perspective view of the nail bin, Figure 5 It is shown Figure 3 An exploded perspective view of some components of the nail magazine. Figure 6 It is shown Figure 3 A perspective view of the working components of the nail magazine, Figure 7 It is shown Figure 3 A perspective cross-sectional view of a nail magazine. Figure 8 It is shown Figure 3 A side cross-sectional view of a nail magazine, Fig. 9 (a) to Fig. 9 (c) is shown as a whole Figure 8 Side cross-sectional view of the stapling action of the staple cartridge.

[0098] See also Figures 3 to 9 (c), etc., the staple cartridge 500 is formed to be attachable to and detachable from the first jaw 101, and includes a plurality of staples 530 and a blade 542 therein for suturing and cutting tissue. Here, the staple cartridge 500 may include a cover 510, a housing 520, staples 530, a lead-out member 560, a working member 540, and a reciprocating assembly (not shown).

[0099] The housing 520 constitutes the outer shape of the staple cartridge 500, and is generally formed in a form in which one side (top surface) is removed from an empty box, so that the interior thereof can be formed to accommodate a reciprocating moving assembly (not shown), a working member 540, and suture staples 530. Here, the cross section of the housing 520 is generally formed in a "U" shape.

[0100] The cover 510 is formed to cover the top of the housing 520. The cover 510 may be provided with a suture nail hole 511 that enables a plurality of suture nails 530 to be discharged to the outside. Before the suture nails are driven, the suture nails 530 are originally accommodated in the housing 520, but when the suture nails are sutured, they are pushed upward by the working member 540 and then pass through the suture nail holes 511 of the cover 510 to be led out to the outside of the staple cartridge 500 while the suture nails are sutured.

[0101] On the other hand, the slit 512 may be formed on the cover 510 along the longitudinal direction of the cover 510. The blade 542 of the working member 540 may protrude to the outside of the staple cartridge 500 through the slit 512. When the blade 542 of the working member 540 passes along the slit 512, the stapled tissue may be cut.

[0102] A plurality of suture staples 530 may be disposed inside the housing 520. As the working member 540 described later moves linearly in one direction, the plurality of suture staples 530 may be sequentially pushed upward from the inside of the housing 520 to the outside while being sutured, i.e., staple suture. Here, the material of the suture staples 530 may include titanium, stainless steel, etc.

[0103] On the other hand, a lead-out member 560 may be further provided between the housing 520 and the staple 530. In other words, it may be described that the staple 530 is provided on top of the lead-out member 560. In this case, the working member 540 pushes the lead-out member 560 upward while performing a linear motion in one direction, and the lead-out member 560 may push the staple 530 upward.

[0104] As described above, the situation in which the working member 540 directly pushes the suture staple 530 upward and the situation in which the working member 540 pushes the lead-out member 560 upward so that the lead-out member 560 pushes the suture staple 530 upward (i.e., the situation in which the working member 540 indirectly pushes the suture staple 530 upward) can both be described as the working member 540 pushing the suture staple 530 upward.

[0105] On the other hand, the method of linearly moving the working member 540, that is, the method of moving from the proximal end side to the distal end side of the jaw in one direction, can be various.

[0106] As an example, the working member 540 can be linearly moved by a reciprocating member (not shown), and the reciprocating member converts the rotational motion of the pulley into the reciprocating linear motion of the reciprocating member (not shown) to perform the reciprocating linear motion. Alternatively, the wire can be directly fixed to the working member 540, so that the working member 540 can be linearly moved by using the structure of the pulley and the wire. However, the technical concept of the present invention is not limited to this, and various mechanisms that make the working member 540 perform linear motion can certainly be used. Below, for convenience, the case where the working member 540 is linearly moved using the above-mentioned reciprocating member (not shown) is described as an example.

[0107] The working member 540 may be disposed inside the housing 520. The working member 540 is formed to be contactable with a reciprocating member (not shown) so as to be able to perform linear motion in one direction according to the reciprocating linear motion of the reciprocating member (not shown). In other words, the working member 540 interacts with the reciprocating member (not shown) so as to perform stapling and cutting while moving along the extending direction of the connecting portion 400.

[0108] The working member 540 may include a wedge 541 , a blade 542 , a ratchet member 543 , and a body 545 .

[0109] The body 545 may be formed in a rectangular column shape, and formed as a base portion of the working member 540 .

[0110] The wedge 541 may be formed on at least one side of the main body 545, and may be combined with the main body 545 or formed as a whole with the main body 545. In addition, the wedge 541 may be formed to have a predetermined inclined surface. That is, the wedge 541 may be formed to be inclined to a certain degree in the extension direction of the connecting portion 400. In other words, in the wedge 541, the height of the proximal end 501 side of the staple cartridge 500 may be higher than the height of the distal end 502 side. Although the wedge 541 is shown in the figure as being formed two on each side of the main body 545, the concept of the present invention is not limited thereto, and it may be formed in a variety of numbers and shapes according to the shape of the suture staples 530 or the lead-out member 560 contacting the wedge 541.

[0111] The wedge-shaped member 541 as described above may be formed to sequentially contact the lead-out member 560 or the plurality of suture staples 530, thereby being used to sequentially push the suture staples 530 upward. Fig.10 As shown in FIGS. 1 and 14 , the working member 540 can move toward the distal end portion 502 while pushing the suture staples 530 upward in sequence to lead the suture staples out of the staple cartridge 500 .

[0112] The blade 542 may be formed on one side of the wedge 541, more specifically, on the proximal end 501 side of the wedge 541. In one region of the blade 542, a sharp edge portion 542a for cutting tissue is formed. While at least a portion of the edge portion 542a is led out of the first jaw 101 and the staple cartridge 500, the tissue disposed between the first jaw 101 and the second jaw 102 can be cut. The edge portion 542a of the blade 542 may always be led out of the first jaw 101. Alternatively, the edge portion 542a of the blade 542 may be accommodated inside the first jaw 101 or inside the staple cartridge 500 at ordinary times, and may be led out of the first jaw 101 only when the working member 540 moves along the longitudinal direction.

[0113] Fig. 9 (a) to Fig. 9 (c) shows Figure 8 A side cross-sectional view of the various parts of the staple cartridge during the staple suturing action, Fig.10 It is shown as a whole Figure 8 Side cross-sectional view of the stapling action of the staple cartridge.

[0114] exist Fig. 9 In the state shown in (a), when the working member 540 moves along Fig. 9 When the working member 540 moves in the direction of arrow A1 in (b), the wedge 541 of the working member 540 pushes the lead-out member 560 upward, and the lead-out member 560 pushes up one side of the bottom of the suture staple 530. In addition, the suture staple 530 is discharged to the outside of the first jaw 101 and the staple cartridge 500.

[0115] In this state, when the working member 540 moves along Fig. 9 When the suture staple 530 moves further in the direction of arrow A2 in (c), the ejected suture staple 530 is further pushed upward by the working member 540 while in contact with the anvil (not shown) of the second jaw 102, thereby bending the two ends of the suture staple 530 to perform suture suturing.

[0116] While the above actions are being performed continuously, Fig.10 As shown, among the plurality of suture staples 530 , sutures are performed sequentially starting from the suture staples 530 on the proximal end portion 501 side to the suture staples 530 on the distal end portion 502 side.

[0117] In summary, the surgical instrument 10 according to the embodiment of the present invention moves the working member 540 toward the distal end 502 of the staple cartridge 500, while the working member 540 discharges the staples 530 to the outside of the staple cartridge 500, and at the same time, the blade 542 of the working member 540 moves toward the distal end 502 of the staple cartridge 500. Here, when the body tissue is interposed between the first jaw 101 and the second jaw 102, the surgical instrument 10 according to the embodiment of the present invention can be described as simultaneously suturing and cutting the body tissue.

[0118] On the other hand, when performing the staple suturing operation, not all staples 530 will be fixed to body tissues, and a part of staples may move inside the body. For example, if the starting part of the staple arrangement is located at the part without tissue, then when starting to staple suturing, the first few staples 530 may not be fixed to the tissues, but move without restriction.

[0119] It is often recommended to remove unsecured staples, but this procedure is cumbersome and may result in inability to fully retract the staples.

[0120] Therefore, a system is needed to automatically retract staples that are not fixed to tissues during staple suturing surgery.

[0121] The present invention aims to solve the above-mentioned problems and provides a staple cartridge for a surgical instrument, which can utilize the following mechanisms to prevent the occurrence of active staples or to retract active staples.

[0122] Hereinafter, the lead-out member 560 and the suture staples 530 of the staple cartridge 500 according to the first embodiment of the present invention will be described.

[0123] Fig.11 It is shown Figure 5 An enlarged perspective view of the lead-out member and the suture staple, Fig.12 yes Fig.11Side view of the lead-out member and suture staple.

[0124] See also Fig.11 and Fig.12 The staple cartridge 500 according to the first embodiment of the present invention may include a wedge 541 of a working member 540 , a lead-out member 560 , and staples 530 .

[0125] The lead-out member 560 may include a support portion 561 that accommodates or supports the suture staple 530. The support portion 561 may be formed in the shape of a rectangular column, and a seating portion 562 that can seat the suture staple 530 may be formed at the top of the support portion 561. In addition, the seating portion 562 may be formed in a groove shape along the longitudinal direction and can accommodate at least a portion of the suture staple 530.

[0126] On the other hand, one support portion 561 and one suture staple 530 may be provided on one lead-out member 560, or a plurality of support portions 561 and a plurality of suture staples 530 may be provided on one lead-out member 560. Fig.11 As shown, the lead-out member 560 may be formed as a whole by connecting the bottoms of three support portions 561 .

[0127] In addition, the nail cartridge 500 according to the first embodiment of the present invention may include an elastic member 563a. Here, the elastic member 563a is interposed between the housing 520 and the cover 510, and can provide elastic force in a direction that causes the lead-out member 560 to move downward. In other words, a device can be provided that can move the lead-out member 560 downward again, and the lead-out member 560 moves upward inside the housing 520 by the movement of the wedge 541.

[0128] Specifically, the elastic member 563a may be fixedly coupled to the lead-out member 560. When the lead-out member 560 moves upward toward the top of the housing 520, the elastic member 563a may be compressed by the cover 510 or the external structure, thereby providing an elastic force in a direction that causes the lead-out member 560 to move downward. That is, as the lead-out member 560 pushed upward by the wedge 541 approaches the cover 510 or the external structure, the elastic member 563a coupled to the lead-out member 560 can be compressed by contacting the cover 510 or the external structure. At this time, the lead-out member 560 may be pushed upward to a degree sufficient to discharge the suture staples 530 through the suture staple holes 511 to the outside of the cover.

[0129] Thus, when the wedge 541 that pushes the lead-out member 560 upward moves to the distal end side and passes, the force that pushes the lead-out member 560 upward is removed, so that the lead-out member 560 can move downward by the elastic force of the elastic member 563a. And, the suture nail 530 that is not fixed to the body tissue can be introduced into the interior of the housing 520 together with the lead-out member 560.

[0130] Here, the elastic member 563a may be formed in the form of a leaf spring, so that one end of the elastic member 563a is coupled to one side of the lead-out member 560, and the other end of the elastic member 563a is spaced apart from the one end, so that elastic deformation can be achieved by pressing. Here, an example of the elastic member 563a has been described as a leaf spring, but in addition, various forms that provide elastic force may also be used, such as a coil spring and a disc spring.

[0131] As another example, the elastic member 563a is fixedly coupled to the cover 510, and when the lead-out member 560 moves upward toward the top of the housing 520, the elastic member 563a is compressed by the lead-out member 560, thereby being able to provide elastic force in a direction that causes the lead-out member 560 to move downward. That is, as the lead-out member 560 pushed upward by the wedge 541 approaches the cover 510, the elastic member 563a coupled to the bottom surface of the cover 510 can be compressed by contacting the lead-out member 560. At this time, the lead-out member 560 can be pushed upward to a degree sufficient to discharge the suture staples 530 through the suture staple holes 511 to the outside of the cover.

[0132] Similarly, the elastic member 563a can be formed in the form of a leaf spring, so that one end of the elastic member 563a is coupled to the bottom surface of the cover 510, and the other end of the elastic member 563a is spaced apart from the one end, so that elastic deformation can be achieved by pressing. Here, an example of the elastic member 563a has been described as a leaf spring, but in addition, it can also be various forms that provide elastic force, such as a coil spring and a disc spring.

[0133] When the elastic member 563a is fixed to the lead-out member 560 or the cover 510, etc., the elastic member 563a provides elastic force to the lead-out member 560 by compression deformation. At this time, the extent to which the lead-out member 560 moves downward may be such that it returns to its original position, or may be such that it returns to the minimum extent that the staple 530 is released from the lead-out member 560.

[0134] Here, the elastic member 563a is fixed to the lead-out member 560 and the elastic member 563a is fixed to the cover 510 as an example for description, however, the elastic member 563a may be located anywhere between the staple cartridge 500 and the lead-out member 560. Specifically, the elastic member 563a may be located between the housing 520 of the staple cartridge 500 and the lead-out member 560.

[0135] (First Modification of the First Embodiment)

[0136] Hereinafter, the lead-out member 560 and the suture staples 530 of the staple cartridge 500 according to the first modified example of the first embodiment of the present invention will be described. Figure 3 500, etc.), compared with the first variant of the first embodiment of the present invention, the nail magazine is different in characteristics with respect to the coupling position and the force of the elastic member.

[0137] Fig.13 1 is an enlarged perspective view showing a nail cartridge and a pull-out member of a surgical instrument according to a first modified example of the first embodiment of the present invention.

[0138] See also Fig.13 , the staple cartridge 500 according to the first modified example of the first embodiment of the present invention may include a lead-out member 560. In addition, although not shown in the drawings, the staple cartridge 500 may include a wedge 541 of a working member 540 and staples 530. Since the working member 540, the wedge 541, the staples 530, etc. are substantially the same as those of the staple cartridge 500 according to the first embodiment of the present invention, a detailed description thereof will be omitted.

[0139] The lead-out member 560 of the staple cartridge 500 according to the first modified example of the first embodiment of the present invention is interposed between the housing 520 and the cover 510 and includes an elastic member 563 b that provides elastic force in a direction that causes the lead-out member 560 to move downward.

[0140] Here, one end of the elastic member 563b is fixedly coupled to the lead-out member 560, and the other end of the elastic member 563b is fixedly coupled to the housing 520, so that when the lead-out member 560 moves upward, elastic force can be provided in a direction to move the lead-out member 560 downward.

[0141] Specifically, when the lead-out member 560 moves upward to the top of the housing 520, the elastic member 563b is elastically deformed, and the pulling force can act in the direction of moving the lead-out member 560 downward. That is, the lead-out member 560 is pushed upward by the wedge 541 toward the top of the housing 520, that is, the direction of the cover 510, and the elastic member 563b coupled to the lead-out member 560 can be stretched. At this time, the lead-out member 560 can be pushed upward to a degree sufficient to discharge the suture staples 530 through the suture staple holes 511 to the outside of the cover.

[0142] Thus, when the wedge 541 that pushes the lead-out member 560 upward moves to the distal end side and passes, the force that pushes the lead-out member 560 upward is removed, so that the lead-out member 560 can move downward by the pulling force of the elastic member 563b. In addition, the suture nail 530 that is not fixed to the body tissue can be introduced into the interior of the housing 520 together with the lead-out member 560.

[0143] Here, the elastic member 563b may be composed of a tension spring or a leaf spring, etc. In addition, the elastic member 563b may be formed as a separate member distinguished from the lead-out member 560 to be coupled to the lead-out member 560. Alternatively, the elastic member 563b may be formed as a whole with the lead-out member 560.

[0144] In addition, as shown in the figure, the elastic member 563b can be provided at one position, but a plurality of elastic members 563b can also be provided at a plurality of positions.

[0145] On the other hand, in the elastic member 563a of the staple cartridge 500 according to the first embodiment of the present invention and the elastic member 563b of the staple cartridge 500 according to the modification of the first embodiment of the present invention, the elastic force provided by the elastic members 563a and 563b to the lead-out member 560 must be greater than the binding force between the staples 530 and the lead-out member 560. That is, since the staples 530 fixed to the body tissue must be released from the lead-out member 560 during the suturing, the elastic force of the elastic members 563a and 563b that causes the lead-out member 560 to descend must be greater than the binding force between the staples 530 and the lead-out member 560.

[0146] (Second Modification of the First Embodiment)

[0147] Hereinafter, the lead-out member 560 and the suture staples 530 of the staple cartridge 500 according to the second modified example of the first embodiment of the present invention will be described. Figure 3 500, etc.) according to the second variant of the first embodiment of the present invention is different in features in the shapes of the wedge 541 and the lead-out member 560.

[0148] Fig.14 (a) to Fig.14 (b) is a perspective view showing a wedge-shaped member and a lead-out member of a nail magazine of a surgical instrument according to a second modified example of the first embodiment of the present invention, Fig.15 and Fig.16 It is shown Fig.14 (a) to Fig.14 (b) A perspective view of the lead-out member.

[0149] See also Fig.14 (a) to Fig.16 , the working member 540 is formed on the main body (see Figure 6545), and the working member 540 may include a wedge 541 formed to have a predetermined inclined surface. That is, the wedge 541 may be formed to be inclined to a certain extent in the extending direction of the connecting portion 400. In other words, the wedge 541 may include a first inclined surface 541a, which is formed so that the height of the proximal end portion 501 side of the nail cartridge 500 is higher than the height of the distal end portion 502 side.

[0150] In addition, the wedge 541 may include a second inclined surface 541 b formed from the proximal end side of the first inclined surface 541 a and having a height on the distal end side lower than that on the proximal end side.

[0151] That is, when the wedge 541 moves forward from the proximal end 501 side of the nail magazine 500 toward the distal end 502 side along the first direction, the surface of the wedge 541 in contact with the lead-out member 560 may be referred to as a first inclined surface 541a, wherein the first direction may be defined as the longitudinal direction of the jaws or the longitudinal direction of the nail magazine 500. In addition, another inclined surface other than the first inclined surface 541a may be formed, which may be referred to as a second inclined surface 541b. At this time, the inclination of the second inclined surface 541b may be the same as or different from the inclination of the first inclined surface 541a.

[0152] As a specific example, Fig.14 (a) to Fig.14 As shown in (b), the upper end starting point of the first inclined surface 541a and the upper end starting point of the second inclined surface 541b can be close to each other, and the inclination of the second inclined surface 541b can be formed to be steeper than that of the first inclined surface 541a.

[0153] On the other hand, when the working member 540 moves along the first direction toward the distal end 502 side of the nail magazine 500, the lead-out member 560 contacts the first inclined surface 541a and moves upward, and when the working member 540 moves along the first direction toward the proximal end 501 side of the nail magazine 500, the lead-out member 560 can contact the second inclined surface 541b and move downward.

[0154] In other words, Fig.14 As shown in (a), when the working member 540 moves forward toward the distal end portion 502 of the staple cartridge 500, the lead-out member 560 can slide upward on the first inclined surface 541a. Fig.14 As shown in FIG. 5( b ), when the working member 540 moves backward toward the proximal end portion 501 of the nail magazine 500 , the lead-out member 560 may slide downward on the second inclined surface 541 b .

[0155] Here, the lead-out member 560 may include a first contact surface 560a contacting the first inclined surface 541a of the wedge 541 and a second contact surface 560b contacting the second inclined surface 541b of the wedge 541. In addition, the first contact surface 560a and the second contact surface 560b may be inclined surfaces formed such that the height of the proximal end portion 501 side of the staple cartridge 500 is higher than the height of the distal end portion 502 side of the staple cartridge 500.

[0156] In addition, the first contact surface 560a can be formed as an inclined surface having the same inclination as the first inclined surface 541a. In addition, the second contact surface 560b can be formed as an inclined surface having the same inclination as the second inclined surface 541b. In addition, the inclinations of the first contact surface 560a and the second contact surface 560b can be the same or different from each other. That is, the first contact surface 560a can form a predetermined angle relative to the second contact surface 560b.

[0157] Here, the first contact surface 560 a and the second contact surface 560 b may be formed between the support parts 561 of the lead-out member 560 .

[0158] In addition, the first inclined surface 541a of the wedge 541 is formed as a long and narrow inclined surface, and a pair of the first inclined surfaces 541a can be formed to be spaced apart by a predetermined distance. Similarly, the second inclined surface 541b formed at the bottom of the first inclined surface 541a can also be formed as a pair and spaced apart by a predetermined distance.

[0159] As described above, the spaced distance of the wedge 541 may correspond to the thickness of the support portion 561 of the lead-out member 560, and when the lead-out member 560 contacts the second inclined surface 541b and slides downward, the support portion 561 formed at the center of the lead-out member 560 may pass between the spaced spaces. That is, the wedge 541 may be used to guide the lead-out member 560 including the support portion 561.

[0160] As the working member 540 and the wedge 541 move toward the distal end portion 502 side of the staple cartridge 500, the lead-out member 560 rises along the first inclined surface 541a of the wedge 541. Then, when the wedge 541 moves backward toward the proximal end portion 501 side of the staple cartridge 500, the lead-out member 560 descends along the second inclined surface 541b. At this time, when the lead-out member 560 is at its highest point after moving upward, even if the wedge 541 moves backward, the lead-out member 560 may not contact the second inclined surface 541b, and therefore it is necessary for the lead-out member to move downward to a certain extent.

[0161] Thus, the cartridge 500 may include the elastic members 563a, 563b described in the first embodiment, such that after the lead member 560 moves upward, it can move downward to a certain extent from its highest point.

[0162] However, the body tissue or the staple 530 can be used as a kind of spring to move the lead member downward. Specifically, during the stapling process, the body tissue is sandwiched between the first jaw 101 and the second jaw 102, and thus is compressed by each jaw. Therefore, the body tissue has a force to restore its original thickness. This force acts on the lead member 560 protruding above the lid 510 of the cartridge 500, so that the lead member 560 can be moved downward.

[0163] In addition, during the stapling process, as the two ends of the staple 530 are bent, the staple 530 is deformed into a specific shape. At this time, there may be a force in the staple 530 to restore its original shape. In other words, a spring-back phenomenon may occur during the stapling process. And the force that makes the staple 530 restore its original shape acts on the lead member 560 protruding above the lid 510 of the cartridge 500, so that the lead member 560 is moved downward.

[0164] As described above, through the process of moving the lead member 560 that moves upward during stapling back downward, the staple 530 not fixed to the body tissue can be introduced into the cartridge 500 together with the lead member 560.

[0165] (Second Embodiment)

[0166] Hereinafter, the lead member 660 and the staple 630 of a cartridge (not shown) according to the second embodiment of the present invention will be described. Here, compared with the cartridge (see Figure 3 500, etc. in the above-mentioned first embodiment of the present invention), the cartridge according to the second embodiment of the present invention is different in terms of the shape of the lead member 660.

[0167] Fig.17 (a) of shows a perspective view of the lead member and the staple of the cartridge of the surgical instrument according to the second embodiment of the present invention, Fig.17 (b) of shows Fig.17 (a) of the cross-sectional view of a part of the cross-section of the lead member and the staple.

[0168] See Fig.17 (a) of and Fig.17(b), the staple cartridge (not shown) according to the second embodiment of the present invention may include a lead-out member 660 and a suture staple 630. In addition, although not shown in the drawings, the staple cartridge may include a wedge of a working member. Since the working member, the wedge, etc. are substantially the same as the working member 540 and the wedge 541 of the staple cartridge 500 according to the first embodiment of the present invention, a detailed description thereof will be omitted.

[0169] The lead-out member 660 includes a seating portion 662 that supports the suture staple 630 and on which the suture staple 630 is seated, and the suture staple 630 may be easily fixed to the seating portion 662 .

[0170] Here, the seating portion 662 may be formed in a groove shape along the longitudinal direction. Specifically, the seating portion 662 may be formed in a groove corresponding to the shape of the lower end portion 631 of the suture staple 630 .

[0171] The method for simply fixing the staple 630 to the seating portion 662 may be varied and will be described in various embodiments below.

[0172] As an example, the seating portion 662 may include one or more fasteners 664 .

[0173] Specifically, the fastener 664 may be formed in a hook shape, and two fasteners 664 may be formed to face each other with the groove of the seating portion 662 interposed therebetween. Fig.17 As shown in (b), the distance between the surfaces facing each other of the two fasteners 664 may be narrower than the thickness of the cross section of the lower end portion 631 of the suture staple. That is, when the suture staple 630 is placed in the placement portion 662, the fastener 664 may interfere with the suture staple 630. Here, the fastener 664 is formed of a member having elasticity to be elastically deformed so that the suture staple 630 can be placed in the placement portion 662. In addition, after the suture staple 630 is placed in the placement portion 662, the fastener 664 can easily fix the suture staple 630 by elasticity.

[0174] The fastener 664 may be formed as one body with the seating portion 662 , or may be formed as a distinguished separate member so as to be coupled to the seating portion 662 .

[0175] As another example of simply fixing the staple 630 to the seating portion 662, in the lead-out member 660, the staple 630 may be simply fixed to the seating portion 662 by applying an adhesive between the seating portion 662 and the staple 630. Here, the adhesive is a water-soluble adhesive, and when the staple 630 and the lead-out member 660 come into contact with body tissue, the adhesive force may be lost due to the moisture in the body tissue.

[0176] Alternatively, in the lead-out member 660, a liquid may be applied between the placement portion 662 and the staple 630, so that the staple 630 is simply fixed to the placement portion 662 by the surface tension of the liquid. Here, the liquid includes water or oil, and a non-evaporating liquid may be injected between the placement portion 662 and the staple 630 during the manufacturing stage, or physiological saline may be applied to the staple cartridge before starting the operation.

[0177] As another example, the lead-out member 660 may include a magnetic body and simply fix the suture staple 630 to the seating portion 662 by magnetic force.

[0178] As another example, the placement portion 662 of the lead-out member 660 may be formed with a microstructure and the staple 630 may be easily fixed to the placement portion 662 through an adsorption phenomenon. Specifically, a silicon structure having a micro-pore surface may be formed on the placement portion 662. The adsorption phenomenon may weaken over time, but the staple 630 may contact the anvil and bend both ends to apply pressure to the adsorption structure, thereby restoring the adsorption phenomenon.

[0179] Even if there is only a downward moving structure of the lead-out member 560 as in the staple cartridge 500 according to the first embodiment of the present invention, the lead-out member 560 and the suture staples 530 will move downward together due to gravity, so that the movable suture staples 530 can be retracted. However, the direction of gravity acting on the suture staples 530 may change due to the inclination of the staple cartridge 500, or the suture staples 530 may collide with the staple cartridge 500 during the process of retracting the suture staples 530, resulting in the suture staples 530 being unable to enter the suture staple holes 511 and being separated.

[0180] Therefore, in addition to the downward moving structure of the lead-out member, as in the staple cartridge (not shown) according to the second embodiment of the present invention, an additional structure is provided to fix the staples 630 to the lead-out member 660, thereby being able to effectively realize the function of retracting the staples.

[0181] On the other hand, even if there is only the simple fixing property of the lead-out member 660 and the staple 630, when the user retracts the staple cartridge (not shown) after the staple suturing, the movable staple 630 can also be retracted. However, since the simple fixing between the plurality of lead-out members 660 and the staple 630 is released at the same time, it may cause a burden on the body tissue. Therefore, it is necessary to properly adjust the simple fixing force between the lead-out member 660 and the staple 630. At this time, if the fixing force between the lead-out member 660 and the staple 630 is weak, the simple fixing can be released only by the slight retreat of the lead-out member 660 caused by the elasticity of the body tissue and the staple. And, even if the staple 630 is not released, since the simple fixing force is weak, when the staple 630 is forcibly released, the body tissue will not be burdened.

[0182] (First Modification of the Second Embodiment)

[0183] Hereinafter, the lead-out member 760 and the suture staples 730 of the staple cartridge (not shown) according to the first modified example of the second embodiment of the present invention will be described. Figure 3 500, etc.) according to the first variant of the second embodiment of the present invention is different in features in the shape of the lead-out member 760 or the suture staple 730.

[0184] Fig.18 It is a perspective view showing a lead-out member of a staple cartridge and suture staples of a surgical instrument according to a first modified example of the second embodiment of the present invention.

[0185] The lead-out member 760 includes a placement portion 762, which can form a groove in the longitudinal direction. The lower end portion 731b of the suture staple 730 placed in the placement portion 762 can include a curved section 731a, which is laterally curved relative to the longitudinal direction in at least one region. And, when the suture staple 730 is inserted into the groove of the placement portion 762, elastic deformation occurs in the curved section 731a, and the suture staple 730 can be simply fixed to the placement portion 762 by the force of the curved section 731a to restore to its original state. That is, the curved section 731a of the suture staple 730 is deformed into a shape close to a straight line to fit into the groove of the placement portion 762, but since the curved section 731a attempts to restore to its curved shape, an elastic force can be applied to the groove of the placement portion 762.

[0186] In other words, since the lower end portion 731b of the suture staple 730 is not formed in a straight line shape corresponding to the groove of the seating portion 762, a portion of the lower end portion 731b is bent laterally, and therefore, when the suture staple 730 is inserted into the seating portion 762, the suture staple 730 may interfere with the seating portion 762. At this time, the suture staple 730 is elastically deformed and inserted into the groove of the seating portion 762, and frictional force is generated between the suture staple 730 and the seating portion 762 by the elastic force of the suture staple 730, so that the suture staple 730 and the seating portion 762 are easily fixed.

[0187] On the other hand, in contrast, the suture staple 730 includes a lower end portion 731b in the longitudinal direction disposed on the placement portion 762, and the placement portion 762 may form a groove including a curved section, and the curved section is transversely curved relative to the longitudinal direction in at least one region. Furthermore, when the suture staple 730 is inserted into the groove of the placement portion 762, the lower end portion 731b of the suture staple 730 is elastically deformed, and the suture staple 730 can be simply fixed to the placement portion 762 by the force of the lower end portion 731b trying to restore to its original state. That is, the lower end portion 731b of the straight line shape is transversely bent to be inserted into the groove of the placement portion 762, but since the lower end portion 731b tries to restore to its straight line shape, an elastic force can be applied to the groove of the placement portion 762.

[0188] In other words, since the lower end portion 731b of the suture staple 730 is not formed in a curved shape corresponding to the groove of the seating portion 762, the entire portion of the lower end portion 731b is formed in a straight line shape, and therefore, when the suture staple 730 is inserted into the seating portion 762, the suture staple 730 may interfere with the seating portion 762. At this time, the suture staple 730 is elastically deformed and inserted into the groove of the seating portion 762, and frictional force is generated between the suture staple 730 and the seating portion 762 by the elastic force of the suture staple 730, so that the suture staple 730 and the seating portion 762 are easily fixed.

[0189] (Second Modification of the Second Embodiment)

[0190] Hereinafter, the lead-out member 860 and the suture staples 830 of the staple cartridge 800 according to the second modified example of the second embodiment of the present invention will be described. Figure 3 500, etc.), compared with the nail magazine 800 according to the second modified example of the second embodiment of the present invention is different in features in the shapes of the shell 820, the cover 810 and the lead-out member 860.

[0191] Fig.19 1 is a perspective view showing a nail cartridge and a lead-out member of a surgical instrument according to a second modified example of the second embodiment of the present invention, Fig. 20 It is along Fig.19 A cross-sectional view taken along line I-I'.

[0192] See also Figures 19 to 20 The nail magazine 800 according to the second modified example of the second embodiment of the present invention includes a cover 810, a housing 820, and a lead-out member 860, and, although not shown in the drawings, may include a working member, a wedge, etc. Since the working member, the wedge, etc. are substantially the same as the working member 540 and the wedge 541 of the nail magazine 500 according to the first embodiment of the present invention, a detailed description thereof will be omitted.

[0193] The lead member 860 may include a body support portion 861 and a placement portion 862. The placement portion 862 includes a fastener 864 that can be deformed by an external force. When the lead member 860 moves, the fastener 864 deforms to fasten to a staple (see Fig.17 630 in (a) of

[0194] That is, the fastener 864 is not initially in a state of fastening the staple, but can be deformed by an external force to fasten the staple. Specifically, the portion of the fastener 864 connected to the placement portion 862 can be formed to be easily elastically deformed and can be bent or folded by an external force.

[0195] Here, the fastener 864 can be formed in a shape similar to the fastener 664 of the lead member 660 of the staple cartridge according to the second embodiment of the present invention. In other words, the fastener 864 can be formed in a hook shape capable of easily fastening the lower end portion of the staple.

[0196] On the other hand, the staple hole 811 of the lid 810 may have an inclined surface 810c, which is formed such that the inner width becomes narrower as it approaches the upper end portion of the staple hole 811 compared to the lower end portion of the staple hole 811. Additionally, when the lead member 860 moves upward, the fastener 864 contacts the inclined surface 810c, and the fastener 864 can be deformed by the external force caused by the inclined surface 810c.

[0197] In other words, the width of the lower end portion of the staple hole 811 is formed wide enough so as not to contact the fastener 864, such that before the lead member 860 moves upward, the fastener 864 does not contact the inner wall of the staple hole 811. However, the upper end portion of the staple hole 811 is formed to have a narrow enough width to contact the fastener 864 or the support portion 861, such that as the lead member 860 moves upward along the staple hole 811, the fastener 864 contacts the inclined surface 810c of the staple hole 811.

[0198] Additionally, it is natural that although the fastener 864 contacts the inner wall of the staple hole 811 before the lead member 860 moves upward, an external force sufficient to deform the fastener 864 is not applied to the fastener 864, and as the lead member 860 moves upward along the staple hole 811, the fastener 864 can be deformed by receiving an external force from the inclined surface 810c.

[0199] Alternatively, when the staple is fixed to the fastener 864, the fastener 864 contacts the inner wall of the staple hole 811 or the like and is partially deformed, and at the same time, the staple can be placed in the groove of the placement portion 862.

[0200] Alternatively, the fastener 864 may be formed with Fig.17 The same shape as the fastener 664 shown in (a) of FIG. That is, the fastener 864 as a member having elasticity can be formed in a hook shape, and two fasteners 864 can be formed to face each other with the groove of the placement portion 862 inserted therebetween. Here, the suture staple (see Fig.17 630 in (a) may not be in a state of being fastened to the fastener 864, but may simply be placed on the fastener 864. Furthermore, the lead-out member 860 moves upward along the staple hole 811, and the fastener 864 is elastically deformed by the force of the staple colliding with the body tissue or the anvil, and the staple can be fastened to the fastener 864 in the end.

[0201] On the other hand, if the process of fastening the suture staples to the fasteners is performed separately in advance, the thin and weak suture staples may be deformed, but since the above-mentioned structure automatically fastens the suture staples to the fasteners during the suture action, the deformation of the suture staples that may occur when the suture staple fastening process is performed separately can be prevented in advance.

[0202] (Third Embodiment)

[0203] Hereinafter, the cover 910 of the staple cartridge 900 of the third embodiment of the present invention will be described in detail. Figure 3 500, etc.) according to the third embodiment of the present invention, the staple cartridge 900 is characteristically different in the shape of the staple holes 911 of the cover 910.

[0204] Fig.21 is an enlarged perspective view showing a nail cartridge of a surgical instrument according to a third embodiment of the present invention, Fig. 22 It is shown Fig.21 A plan view of the cover of the nail magazine.

[0205] See also Fig.21 and Fig. 22 According to the third embodiment of the present invention, the staple cartridge 900 includes a cover 910 , and the cover 910 may include a plurality of staple holes 911 .

[0206] The suture nail hole 911 of the cover 910 may form a recess 911b capable of accommodating the suture nail in the area adjacent to the entrance. Here, the recess 911b may have a wider width or a longer length than the suture nail hole 911, or may have a wider width and a longer length than the suture nail hole 911, and may be formed to have a preset depth.

[0207] The suture nail hole 911 formed along the longitudinal direction of the nail magazine 900 is formed into a groove shape. As shown in the figure, the length l2 of the recess 911b is longer than the length l1 of the suture nail hole 911, and the width w2 of the recess 911b can be formed to be wider than the width w1 of the suture nail hole 911.

[0208] On the other hand, when functions such as the descending structure of the lead-out member 560 or the fixed combination structure of the suture staple 530 and the lead-out member 560 are realized, the suture staple 530 that is not fixed to the body tissue will be reintroduced into the suture staple hole 511 of the staple cartridge 500, but the suture staple 530 that has been in contact with the anvil and has both ends bent may not be reintroduced into the suture staple hole 511. In this case, the cover 510 of the staple cartridge and the suture staple 530 may collide, so that the simple fixation between the suture staple 530 and the lead-out member 560 is released, thereby making the suture staple 530 movable.

[0209] However, the staple cartridge 900 according to the third embodiment of the present invention can accommodate the staples 530 that have failed in staple suturing and are released from the lead-out member 560 into the recesses 911 b by forming the recesses 911 b wider than the staple holes 911 .

[0210] Of course, the above-mentioned embodiments or modifications may be implemented independently of each other or together.

[0211] So far, the present invention has been described with focus on the preferred embodiments. It will be appreciated by those skilled in the art that the present invention may be implemented in a modified form without departing from the essential features of the present invention. Therefore, the disclosed embodiments should be considered from an illustrative rather than a restrictive perspective. The scope of the present invention is indicated in the claims rather than in the foregoing description, and all differences within the equivalent range should be interpreted as being included in the present invention.

[0212] According to the present invention as described above, when performing staple suturing surgery using surgical instruments, the suture staples that are not fixed to body tissues but move can be automatically retracted, thereby achieving the effects of improving the convenience of the surgeon, the safety, reliability and speed of the surgery, etc.

[0213] It should be understood that the embodiments described herein should be considered only as illustrative and not for limiting purposes. The description of features or aspects in each embodiment should generally be considered as other similar features or aspects that can be used in other embodiments. Although one or more embodiments have been described with reference to the accompanying drawings, it will be understood by those skilled in the art that various modifications may be made to the form and details thereof without departing from the spirit and scope defined by the claims.

[0214] Explanation of symbols

[0215] 10: Surgical instruments

[0216] 100: end tool

[0217] 200: Operation Department

[0218] 500: Nail warehouse

Claims

1. A nail magazine for a surgical instrument, In a nail magazine of a surgical instrument having an end tool that can rotate in at least one direction, the nail magazine includes: case; a cover covering one surface of the housing and having a suture nail hole capable of discharging the suture nails accommodated in the interior of the housing to the outside; a working member disposed inside the housing and formed to be movable relative to the housing along a longitudinal direction of the housing, that is, a first direction; a lead-out member on which the suture staples are disposed and which moves upward from the bottom of the housing toward the top of the housing by the movement of the working member, thereby discharging the suture staples to the outside; and an elastic member interposed between the housing and the cover, the elastic member being configured to provide an elastic force in a direction to move the lead-out member downward.

2. The staple cartridge of the surgical instrument according to claim 1, characterized in that: The elastic member is fixedly combined with the lead-out member.

3. The staple cartridge of the surgical instrument according to claim 2, characterized in that: When the lead-out member moves upward toward the top of the housing, the elastic member is configured to be compressed by the housing or an external structure, and the elastic member is configured to provide an elastic force in a direction to move the lead-out member downward.

4. The staple cartridge of the surgical instrument according to claim 1, characterized in that: The elastic member is fixedly coupled to the cover, and when the lead-out member moves upward toward the top of the housing, the elastic member is configured to be compressed by the lead-out member, thereby providing elastic force in a direction to move the lead-out member downward.

5. The staple cartridge of the surgical instrument according to claim 1, characterized in that: In the elastic member, one end of the elastic member is fixedly coupled to the lead-out member, and the other end of the elastic member is fixedly coupled to the housing, so that when the lead-out member moves upward, the elastic member is configured to provide elastic force in a direction to move the lead-out member downward.

6. The staple cartridge of the surgical instrument according to claim 1, characterized in that: The elastic force provided by the elastic member to the lead-out member is greater than the binding force between the suture staple and the lead-out member.

7. The staple cartridge of the surgical instrument according to claim 1, characterized in that: The elastic member is formed as a whole with the lead-out member.

8. The staple cartridge of the surgical instrument according to claim 1, characterized in that: The elastic member is provided as a separate member distinguished from the lead-out member and coupled to the lead-out member.

9. The staple cartridge of the surgical instrument according to claim 1, characterized in that: The working components include: One or more wedges, each of which includes a first inclined surface, wherein the height of the first inclined surface on the proximal end side of the nail magazine is higher than the height of the first inclined surface on the distal end side of the nail magazine, and the proximal end side of the nail magazine is closer to the connecting portion than the distal end side.

10. The staple cartridge of the surgical instrument according to claim 9, characterized in that: Each of the one or more wedges includes a second inclined surface defined starting from a proximal end side of the first inclined surface and having a height of the second inclined surface on the distal end side lower than a height of the second inclined surface on the proximal end side.

11. The staple cartridge of the surgical instrument according to claim 10, characterized in that: When the working member moves along the first direction toward the distal end side of the nail magazine, the lead-out member contacts the first inclined surface and moves upward, and when the working member moves along the first direction toward the proximal end side of the nail magazine, the lead-out member contacts the second inclined surface and moves downward.

12. The staple cartridge of the surgical instrument according to claim 11, characterized in that: The lead-out member comprises: a first contact surface in contact with the first inclined surface of each of the one or more wedges; and a second contact surface in contact with the second inclined surface of each of the one or more wedges, The first contact surface and the second contact surface are inclined surfaces, and their heights on the proximal end side of the nail magazine are higher than their heights on the distal end side of the nail magazine.

13. The staple cartridge of the surgical instrument according to claim 9, characterized in that: When the working member moves along the first direction toward the distal end side of the nail magazine, one or more wedge members of the working member are configured to push up multiple suture staples in the nail magazine in sequence to perform a suturing action, and the blade is configured to move simultaneously along the first direction toward the distal end side of the nail magazine to perform a cutting action.

14. The staple cartridge of the surgical instrument according to claim 1, characterized in that: The staple holes of the cover form pockets capable of accommodating staples in an area adjacent to the inlet.

15. The staple cartridge of the surgical instrument according to claim 14, characterized in that: The recess has a width wider than that of the staple hole, and the recess has a preset depth.

Images