Stapler magazine and stapler

Abstract

The present invention discloses a stapler nail magazine, including: a stapler nail magazine, including a nail anvil, a nail magazine assembly, a nail magazine base and a fixed block component, the fixed block component includes two mutually parallel support parts, a knife groove of a cutting knife is provided between the two support parts, the proximal end of the nail anvil and the proximal end of the nail magazine base are movably hinged through the fixed block component, the nail magazine assembly is located between the nail anvil and the nail magazine base, at least one support part of the fixed block component has an open groove on the upper end surface, and the identification mechanism is located in the open groove for identifying whether the nail magazine assembly is installed in the nail magazine. The present invention adopts a nail magazine with an identification mechanism, which ensures that it can identify whether the laparoscopic cutting stapler nail magazine assembly is installed on the laparoscopic cutting stapler nail magazine body, which can effectively avoid medical accidents caused by re-firing or forgetting to replace the assembly and re-firing, and greatly reduce medical risks.

Description

Technical Field

[0001] The invention relates to the field of medical instruments, and in particular to a stapler magazine and a stapler used in laparoscopic surgery. Background Art

[0002] In surgical operations, medical laparoscopic cutting staplers have become an indispensable auxiliary medical device in the process of suturing human tissues. With the development of medicine and product research and development, more and more multifunctional staple products are used in clinical practice, and their application scope has involved various fields such as gastrointestinal surgery, hepatobiliary surgery, thoracic surgery, urology, and gynecology, becoming one of the indispensable tools for doctors. The application of laparoscopic cutting staplers has many advantages such as less bleeding during surgery, shorter operation time, reduced manual operation errors, avoidance of infection, and rapid postoperative functional recovery.

[0003] Laparoscopic cutting stapler and disposable stapler are suitable for the resection, transection and anastomosis of tissues in abdominal, gynecological, pediatric and thoracic surgeries. They can also be used for the resection and transection of liver parenchyma, liver blood vessels and gallbladder ducts.

[0004] The stapler assembly of the existing laparoscopic stapler stapler magazine is disposable as a whole and can be detachably installed in the stapler magazine. However, in practice, it often happens that the operator cannot identify whether the stapler magazine has been installed. Because some operators are not familiar with the stapler and do not know whether there is a stapler magazine assembly in the stapler magazine, they will reuse the stapler that has already fired the stapler magazine assembly, resulting in only cutting but no suturing during the operation. This action will undoubtedly cause medical accidents during the operation and increase the medical risks of patients. Summary of the invention

[0005] The technical problem to be solved by the present invention is to solve the technical problem that the prior art cannot identify whether the stapler magazine assembly is installed in the stapler box, and can still be closed and fired when the stapler magazine assembly is not installed, thereby effectively preventing the stapler magazine and stapler from being accidentally fired due to careless operation by the doctor during surgery.

[0006] In order to solve the above technical problems, the technical solutions provided by the present invention are as follows:

[0007] A stapler stapler comprises a stapler seat, a stapler magazine assembly, a stapler magazine base and a fixed block component, wherein the fixed block component comprises two mutually parallel supporting parts, a knife groove of a cutting knife is arranged between the two supporting parts, a proximal end of the stapler seat and a proximal end of the stapler magazine base are movably hinged through the fixed block component, and the stapler magazine assembly is located between the stapler seat and the stapler magazine base, and is characterized in that:

[0008] An open groove is provided on the upper end surface of at least one supporting portion of the fixing block component. The identification mechanism is located in the open groove and is used to identify whether the nail magazine assembly is installed in the nail box.

[0009] In a further technical solution, the identification mechanism includes a first elastic component, a first sliding component, a second sliding component, and a movable component;

[0010] The proximal end of the first elastic component is located in the groove of the distal end surface of the support portion, the distal end of the first elastic component is connected to the proximal end of the first sliding component, and the first sliding component exerts a driving force on the first elastic component to make the first elastic component store energy or release energy, thereby driving the first sliding component to slide in the horizontal direction;

[0011] A second sliding component capable of sliding up and down is provided between the first sliding component and the movable component, and the second sliding component is used to limit the sliding distance of the first sliding component and to control the closing and opening actions of the movable component.

[0012] In a further technical solution, the first elastic component is a spring, a protrusion is provided at the proximal end of the first sliding component, the spring is sleeved on the protrusion of the first sliding component, and the length of the spring is greater than the length of the protrusion of the first sliding component.

[0013] In a further technical solution, the first sliding component is a sliding rod, the upper end surface of the sliding rod is provided with a slope groove, including a first table surface, a slope surface, and a second table surface, and the lower end of the second sliding component is located on the first table surface / the second table surface according to the sliding position of the first sliding component;

[0014] When the second sliding component is located on the first table surface, the movable component is in a closed state.

[0015] When the second sliding component is located on the second table surface, the movable component is in an open state.

[0016] In a further technical solution, the second sliding component is a support block, and the inner walls on both sides of the opening groove are provided with a clamping groove that can be clamped with the support block, and the horizontal sliding of the sliding rod drives the support block to move up and down in the clamping groove;

[0017] The upper end surface of the support block is an arc-shaped end surface, and cooperates with the limiting portion of the lower end surface of the movable component. The support block moves up and down in the slot to enable the movable component to close and open.

[0018] In a further technical solution, the identification mechanism further includes a fixing component, which can fix the movable component so that the movable component can perform axial rotation with the fixing component as an axis to achieve closing and opening actions.

[0019] In a further technical solution, the movable part is a hook, and a first through hole is provided on one end face of the hook, and a second through hole and a third through hole are respectively provided on both sides of the opening of the support part, and the first through hole, the second through hole and the third through hole are coaxial holes; the fixing part is a pin, and the pin passes through the first through hole, the second through hole and the third through hole respectively, and is fixed at the third through hole.

[0020] In a further technical solution, the hook is provided with a recessed portion, and when the hook rotates circumferentially with the pin as an axis, a cross section formed by the recessed portion of the hook slides with the protrusion of the support block as an axis.

[0021] In a further technical solution, the identification mechanism further includes a second elastic component, the second elastic component is located in a groove on the upper end surface of the support portion, and the distal end of the second elastic component is connected to the hook to provide elastic force to the hook.

[0022] In a further technical solution, the second elastic component includes a sleeve and a second spring, the sleeve is provided with a groove for accommodating a portion of the second spring, and the depth of the groove is less than the length of the second spring.

[0023] Another technical problem to be solved by the present invention is to provide a stapler to solve the technical problem in the prior art that the stapler cannot identify whether the stapler magazine assembly is installed in the stapler box, thereby effectively preventing the stapler from being accidentally fired due to careless operation by the doctor during surgery.

[0024] In order to solve this technical problem, the present invention further provides a stapler, including the stapler magazine of the stapler.

[0025] After adopting such a design, the present invention has at least the following advantages:

[0026] (1) The present invention adopts a stapler magazine with an identification mechanism, which ensures that it can identify whether the stapler magazine assembly of the laparoscopic stapler is installed on the stapler magazine body of the laparoscopic stapler, and can effectively avoid medical accidents caused by re-firing or forgetting to replace the assembly and re-firing, thereby greatly reducing medical risks.

[0027] (2) The present invention uses a first elastic component, a first sliding component, a second sliding component, and a movable component to cooperate with each other to limit the sliding of the cutting knife in the knife groove, which can effectively avoid the occurrence of operator's misoperation.

[0028] (3) The present invention has a simple structure, good effect, low cost and easy process implementation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] Figure 1 It is a schematic diagram of the structure of the nail box of the present invention;

[0031] Figure 2 It is a structural schematic diagram of the fixing block component of the present invention;

[0032] Figure 3 It is a schematic diagram of the cross-sectional structure of the fixing block component of the present invention;

[0033] Figure 4 It is a schematic diagram of the installation of the fixed block component and the identification mechanism in one embodiment of the present invention;

[0034] Figure 5 is a schematic diagram of the position of the staple cartridge assembly identification mechanism not installed in one embodiment of the present invention;

[0035] Figure 6 is a schematic diagram of the position of the identification mechanism when the cutting knife of the staple cartridge assembly slides without being installed in one embodiment of the present invention;

[0036] Figure 7 is a schematic diagram of the position of the identification mechanism when installing the staple cartridge assembly in one embodiment of the present invention;

[0037] Figure 8 It is a schematic diagram of the position of the recognition mechanism when the cutting knife slides after the staple cartridge assembly is installed in one embodiment of the present invention;

[0038] Fig. 9 is a schematic diagram of the structure of a sliding rod in one embodiment of the present invention;

[0039] Fig.10 is a schematic diagram of the support block structure in one embodiment of the present invention;

[0040] Fig.11 This is a schematic diagram of a hook structure in one embodiment of the present invention;

[0041] Fig.12 It is a schematic diagram of the casing structure in one embodiment of the present invention;

[0042] in,

[0043] 1 is a nail support, 2 is a nail magazine assembly, 3 is a nail magazine base, 4 is a fixed block component, 41 is a first supporting portion, 411 is a first hole, 412 is a second hole, 42 is a second supporting portion, 43 is a first groove, 44 is an opening, 51 is a first spring, 52 is a sliding rod, 53 is a hook, 54 is a supporting block, 55 is a second spring, 56 is a pin, 57 is a sleeve, 521 is a sliding rod protrusion, 522 is a limiting slope groove, 5221 is a first table surface, 5222 is a second table surface, 5223 is a slope surface, 523 is a first boss, 524 is a second boss, 531 is a recessed portion, 532 is a hook hole, 533 is a hook, 541 is a make way groove, 61 is a knife groove, and a cutting knife 62. DETAILED DESCRIPTION

[0044] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0045] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to enable the scope of the present invention to be fully communicated to those skilled in the art.

[0046] In each embodiment of the present invention, the “distal end” refers to the end of the stapler that is away from the user when the stapler is operated, and the “proximal end” refers to the end of the stapler that is close to the user when the stapler is operated.

[0047] like Figures 1 to 12 As shown, in an embodiment of the present invention, a stapler stapler is provided, comprising a stapler seat 1, a stapler magazine assembly 2, a stapler magazine base 3 and a fixed block component 4, wherein the fixed block component 4 comprises a first support portion 41 and a second support portion 42, the first support portion 41 and the second support portion 42 are parallel to each other, a knife groove 61 of a cutting knife is provided between the first support portion 41 and the second support portion 42, a proximal end of the stapler seat 1 and a proximal end of the stapler magazine base 3 are movably hinged through the fixed block component 4, the stapler magazine assembly 2 is located between the stapler seat 1 and the stapler magazine base 3, an opening groove is provided on the upper end surface of the first support portion 41 of the fixed block component 4, and an identification mechanism is located in the opening groove for identifying whether the stapler magazine assembly 2 is installed in the stapler magazine.

[0048] Here, the nail magazine assembly 2 is detachably connected to the fixing block component 4 .

[0049] The identification mechanism is slidably disposed on the first supporting portion 41 of the fixed block component 4 .

[0050] The initial position of the identification mechanism in this embodiment is defined as the position of the identification mechanism when the staple cartridge assembly is not installed.

[0051] When the nail magazine assembly 2 is not installed in the nail magazine, the identification mechanism is in an initial position, preventing the cutting knife from sliding in the knife groove 61 .

[0052] When the nail magazine assembly 2 is installed in the nail magazine, the nail magazine assembly 2 occupies the initial position of the identification mechanism, causing the identification mechanism to leave its initial position and slide toward the fixed block component 4, and the distal end of the identification mechanism abuts against the proximal end of the nail magazine assembly 2, thereby identifying the nail magazine assembly 2 and allowing the cutting knife to slide in the knife groove 61.

[0053] When the staple cartridge assembly 2 is taken out of the staple magazine, the distal end of the identification mechanism cannot abut against the staple cartridge assembly 2 , and the identification mechanism returns to its initial position, preventing the cutting knife from sliding in the knife groove 61 .

[0054] In the embodiment of the present invention, the identification mechanism includes a first elastic component, a first sliding component, a second sliding component, and a movable component.

[0055] Specifically, the proximal end of the first elastic component is located in the first groove 43 of the distal end surface of the support portion, and the distal end of the first elastic component is connected to the proximal end of the first sliding component. The first sliding component gives a driving force to act on the first elastic component, so that the first elastic component stores energy or releases energy, thereby driving the first sliding component to slide in the horizontal direction;

[0056] A second sliding component capable of sliding up and down is provided between the first sliding component and the movable component. The second sliding component is used to limit the sliding distance of the first sliding component and to limit the closing and opening actions of the movable component.

[0057] Specifically,

[0058] In the initial state, the nail magazine assembly 2 is not installed in the nail box, and the first sliding component is in close contact with the first elastic component under the action of the second sliding component on its upper end surface. The upper end of the second sliding component abuts against the recessed portion of the lower end surface of the movable component, so that the distal end of the movable component is higher than the upper surface end surface of the first support portion 41. At this time, the movable component is in an open state. When the cutting knife slides in its knife groove 61, the cutting knife holder is prevented from moving forward due to the action of the movable component, so that the cutting knife cannot be fired.

[0059] When the nail magazine assembly 2 is installed in the nail magazine, due to the existence of the nail magazine assembly 2, the initial position of the first sliding component is occupied, so that the first sliding component gives way to the nail magazine assembly 2, and the first sliding component slides in the direction of the first elastic component, giving the first elastic component a driving force, so that the first elastic component stores energy; in the process of the first sliding component sliding in the direction of the first elastic component, the position where the second sliding component at the upper end surface of the first sliding component contacts the upper surface of the first sliding component along the slope of the upper surface of the sliding component, changing from the first table surface to the second table surface, where the height of the first table surface is higher than the second table surface, so that the second sliding component moves downward, because the upper end of the second sliding component abuts against the recessed portion of the lower end surface of the movable component, the downward movement of the second sliding component causes the upper end of the second sliding component to move downward, thereby moving the movable component downward, causing the distal end of the movable component to be no higher than the upper surface end surface of the first support portion, at this time, the movable component is in a closed state, and when the cutting knife slides in its knife groove 61, the cutting knife can slide smoothly in the knife groove 61.

[0060] When the nail magazine assembly 2 is disassembled from the nail magazine, the initial position of the first sliding component is vacated due to the removal of the nail magazine assembly 2, and the first elastic component releases energy to make the first sliding component slide back to its initial position. In the process of the first sliding component sliding away from the first elastic component, the position where the second sliding component at the upper end surface of the first sliding component contacts the upper surface of the first sliding component along the slope of the upper surface of the sliding component, changing from the second table surface to the first table surface. Here, the height of the first table surface is higher than the second table surface, thereby causing the second sliding component to move up. Because the upper end of the second sliding component abuts the recessed portion of the lower end surface of the movable component, the upward movement of the second sliding component causes the upper end of the second sliding component to move up, thereby causing the movable component to move up, causing the distal end of the movable component to be higher than the upper surface end surface of the first support portion, thereby preventing the cutting knife from slipping in the knife groove.

[0061] Here, the first elastic component may be an elastic member or a spring, which is not limited here.

[0062] In the embodiment of the present invention, preferably, the first elastic component is a first spring 51 , and the first sliding component is a sliding rod 52 .

[0063] The proximal end of the sliding rod 52 is provided with a sliding rod protrusion 521, and the first spring 51 is sleeved on the sliding rod protrusion 521, so that the first spring 51 and the sliding rod 52 are more firmly in contact. The embodiment of the present invention does not limit the shape of the sliding rod protrusion 521, as long as it can be sleeved by the first spring 51.

[0064] Here, a first groove 43 is provided on the distal end surface of the first supporting portion 41 of the fixing block component 4 for accommodating the first spring 51 . The depth of the first groove 43 is greater than the length of the first spring 51 .

[0065] In the embodiment of the present invention, the diameter of the first groove 43 needs to be larger than the diameter of the first spring 51 , that is, the first spring 51 is disposed in the first groove 43 .

[0066] One end of the first spring 51 is located at the bottom of the first groove 43 , and the other end of the first spring 51 is connected to the sliding rod 52 . The diameter of the first groove 43 needs to be larger than the diameter of the sliding rod 52 , that is, the first groove 43 needs to be able to accommodate at least part of the sliding rod 52 .

[0067] A limiting slope groove 522 is provided on the upper end face of the sliding rod 52, including a first table 5221, a second table 5222 and a slope 5223. The second sliding component is located on the limiting slope groove. Due to the existence of the second sliding component, the movable distance of the first sliding component is the distance between the first table 5221 and the second table 5222.

[0068] In the embodiment of the present invention, preferably, the second sliding component is a supporting block 54 .

[0069] When the sliding rod 52 slides toward the first spring 51, due to the existence of the support block 54, the support block 54 abuts against the side wall of the second table 5222, preventing the sliding rod 52 from continuing to slide; when the sliding rod 52 slides away from the first spring 51, the support block 54 abuts against the side wall of the first table 5221, preventing the sliding rod 52 from continuing to slide.

[0070] In the embodiment of the present invention, in order to ensure that the sliding rod 52 will not jump out of its sliding area due to the elastic force of the first spring 51 during the sliding process, so that the sliding rod 52 and the support block 54 are more firmly abutted on both sides, a first boss 523 and a second boss 524 are respectively provided on the two end surfaces of the sliding rod 52, so that when the sliding rod 52 and the support block 54 are abutted, the contact height between the two is higher and the contact area is larger, so that the support block 54 is not easy to fall off and is more secure.

[0071] Here, the first boss 523 and the second boss 524 are respectively provided on both end surfaces of the sliding rod 52, and their heights can be the same or different, and can be set as needed, which is not limited here.

[0072] A clearance groove 541 is provided at the lower end of the support block 54. When the support block 54 contacts the second table surface 5222 of the sliding rod 52, in order to better clamp the support block 54 and the sliding rod 52 to each other and prevent the support block 54 from slipping due to the abutment of the sliding rod 52, in the embodiment of the present invention, the width of the clearance groove 541 of the support block 54 is preferably able to accommodate the width of the side wall of the sliding rod 52.

[0073] In addition, in order to facilitate the installation of the support block 54, the support block 54 in the embodiment of the present invention is provided with an orientation groove 542.

[0074] In the embodiment of the present invention, a portion of the length of the sliding rod 52 is located inside the first groove 43 .

[0075] In the present invention, the inner walls on both sides of the opening groove of the first support portion 41 are provided with slots that can be engaged with the support block 54. The slot on one side is higher than the end face of the first support portion 41 and is used to identify the orientation slot 542 of the support block 54, so as to facilitate the quick and correct installation of the support block 54.

[0076] There is no gap on the side wall of the first groove 43 , and the diameter of the groove needs to be larger than the outer diameter of the first spring 51 .

[0077] Preferably, in the present invention, the first groove 43 of the first support portion 41 is an open groove, that is, the first groove 43 of the support portion 41 is provided with an opening 44 for accommodating a movable component and a support block 54, and the depth of the opening 44 is greater than the height of the movable component, so that the movable component can rotate within the opening within an acute angle range with one end of the movable component as the axis. In the present embodiment, preferably, the rotation angle of the movable component is less than 30 degrees.

[0078] It should be noted that the width of the opening 44 is greater than the thickness of the movable component, so as to facilitate accommodating the movable component.

[0079] Here, grooves capable of accommodating the support block 54 are respectively provided on both sides of the side wall of the opening 44, so that the support block 54 can slide up and down in the groove.

[0080] In the embodiment of the present invention, the identification mechanism 5 further includes a fixing component, which can fix the movable component so that the movable component can perform axial rotation with the fixing component as an axis to realize opening and closing actions.

[0081] Here, the movable part is a hook 53, and a hook hole 532 is provided on one end face of the hook 53. The first support part 41 of the fixed block part 4 is also provided with a first hole 411 and a second hole 412 on both sides of the opening. The first hole 411, the hook hole 532, and the second hole 412 are coaxial holes. The pin 56 passes through the first hole 411 and the hook hole 532 respectively and is fixed at the second hole 412.

[0082] Here, the fixing member is a pin 56. The diameter of the pin 56 is smaller than the diameter of the hook hole 532, so that the hook 53 can rotate in the circumferential direction with the pin 56 as the axis.

[0083] Here, the shapes of the first hole 411 and the second hole 412 on both sides of the opening of the first support portion 41 of the fixed block component 4 can be consistent or inconsistent. For example, the first hole 411 can be set as a square hole and the second hole 412 can be set as a circular hole as needed to facilitate fixing the pin 56. Of course, they can also be set as through holes of other shapes, which will not be elaborated here.

[0084] The other end of the draw hook 53 is in a hook shape, and can also be in an L shape, as long as the draw hook can be higher than the end surface of the fixed block component when the draw hook rotates around the nail magazine.

[0085] The hook 533 of the pull hook 53 is thicker than other parts of the pull hook 53 to facilitate resisting the cutting knife.

[0086] In an embodiment of the present invention, the identification mechanism further comprises a second elastic component, which is located in a groove on the upper end surface of the support portion, and a distal end of the second elastic component is connected to the hook to provide elastic force to the hook.

[0087] Specifically, in the present invention, the second elastic component includes a sleeve 57 and a second spring 55 . The sleeve 57 is provided with a groove for accommodating a portion of the second spring 55 . The depth of the groove is smaller than the length of the second spring 55 .

[0088] Here, the second spring 55 is sleeved in the sleeve 57 to prevent the second spring 55 from bouncing, thereby effectively ensuring that the elastic force of the second spring 55 acts on the hook 53 .

[0089] Of course, the present invention may not use the sleeve 57 and use other methods to fix the second spring 55, such as bonding, etc., which will not be described in detail here.

[0090] In the embodiment of the present invention, the hook 53 is provided with a limiting protrusion in the section of the hook hole 532, and a limiting platform is provided in the opening groove of the first support portion 41. When the hook of the hook 53 moves upward, the hook squeezes the second spring 55, and the limiting protrusion of the hook 53 moves downward. Due to the action of the limiting platform, the limiting protrusion cannot continue to move downward and only needs to move to the limiting platform. Similarly, when the hook of the hook 53 moves downward, the second spring 55 releases its elastic force to act on the hook 53, and the limiting protrusion of the hook 53 moves upward. Due to the action of the limiting platform, the limiting protrusion cannot continue to move upward.

[0091] A recessed portion 531 is provided on the lower end surface of the hook 53, and the concave surface between the recessed portions 531 forms a force transmission surface, which cooperates with the protrusion at the upper end of the support block 54 to complete the force transmission function, so that the hook 53 can realize the opening and closing action.

[0092] As required, the heights of the two ends of the recessed portion 531 of the hook 53 may be different or the same, which is not limited here.

[0093] When the opening action is realized, when the cutting knife slides in its knife groove 61, the knife holder of the cutting knife is prevented from moving forward due to the effect of the draw hook 53, so that the cutting knife cannot be fired.

[0094] Specifically,

[0095] In the initial state, the nail magazine assembly 2 is not installed in the nail magazine, the proximal end of the sliding rod 52 is in close contact with the first spring 51, the lower end of the support block 54 is in contact with the first table 5221 of the upper end surface of the sliding rod 52 and abuts against the side wall of the first table 5221, the upper end protrusion of the support block abuts against the recessed portion 531 of the lower end surface of the hook 53, and the proximal end of the hook 53 abuts against the second spring 55, so that the first spring 51 and the second spring 55 respectively obtain elastic force to store energy, and the hook 533 at the distal end of the hook 53 is higher than the upper surface end surface of the first support portion 41. At this time, the hook 53 is in an open state. When the cutting knife slides in its knife groove 61, the action of the hook 53 prevents the knife holder from moving forward, so that the cutting knife cannot be fired.

[0096] When the nail magazine assembly 2 is installed in the nail magazine, the existence of the nail magazine assembly 2 occupies the initial position of the sliding rod 52, so that the sliding rod 52 gives way to the nail magazine assembly 2, and the sliding rod 52 slides in the direction of the first spring 51, giving the first spring 51 a driving force, so that the first spring 51 stores energy. In the process of the sliding rod 52 sliding in the direction of the first spring 51, the position where the support block 54 at the upper end surface of the sliding rod 52 contacts the upper surface of the sliding rod 52 changes from the first table surface 5221 to the second table surface 5222 along the slope of the upper surface of the sliding rod 52. Here, the height of the first table surface 5221 is higher than the second table surface 5222, so that the support block 54 moves downward. The recessed portion 531 on the lower end surface of the hook 53 and the upper end of the support block 54 cooperate with the recessed portion on the lower end surface of the hook 53 to limit the rotation of the hook 53. The hook 53 rotates circumferentially around the pin 56 in the hook hole 532. When the hook 53 rotates circumferentially in the downward direction, the second spring 55 begins to release energy, and the downward movement of the support block 54 causes the upper end of the support block 54 to move downward, thereby causing the hook 53 to move downward, causing the distal end hook 533 of the hook 53 to be no higher than the upper surface end surface of the first support portion. At this time, the hook 53 is in a closed state, and when the cutting knife slides in its knife groove 61, the cutting knife can slide smoothly in the knife groove 61, thereby achieving normal firing of the laparoscopic stapler stapler.

[0097] When the nail magazine assembly 2 is disassembled from the nail magazine, the initial position of the sliding rod 52 is vacated due to the removal of the nail magazine assembly 2, and the first spring 51 releases energy to make the sliding rod 52 slide back to its initial position. In the process of sliding the sliding rod 52 away from the first spring 51, the position where the support block 54 at the upper end surface of the sliding rod 52 contacts the upper surface of the sliding rod 52 is changed from the second table surface 5222 to the first table surface 5221 along the slope of the upper surface of the sliding rod 52. Here, the first table surface 52 The height of 21 is higher than the second table surface 5222, so that the support block 54 moves upward. Since the upper end of the support block 54 abuts against the recessed portion of the lower end surface of the movable component, the upward movement of the support block 54 causes the upper end of the support block 54 to move upward, thereby moving the hook 53 upward, and the proximal end of the hook 53 abuts against the second spring 55, so that the first spring 51 and the second spring 55 respectively obtain elastic force and store energy, causing the distal end of the hook 53 to be higher than the upper surface end surface of the first support portion, thereby preventing the cutting knife from slipping in the knife groove.

[0098] Here, the recessed portion 531 of the hook 53 can accommodate the distal end protrusion of the supporting block 54 .

[0099] Here, the internal curved force transmission surface of the recessed portion 531 may be a conical surface, or may be a trapezoidal surface or other shapes, as long as the shape can achieve smooth force transmission.

[0100] In the present invention, the thickness of the hook 533 of the pull hook 53 needs to be greater than the thickness of other parts of the pull hook 53 to ensure that the hook 533 can block the cutting knife.

[0101] Here, when the hook 53 rotates circumferentially with the pin 56 as the axis, the cross section formed by the recessed portion 531 of the hook 53 slides with the protrusion at the end of the support block 54 as the axis.

[0102] Of course, in the embodiment of the present invention, the elastic component may also be an elastic member or other mechanical component that can provide energy storage, which will not be described in detail here.

[0103] The invention also discloses a stapler comprising the staple box.

[0104] After adopting such a design, the present invention has at least the following advantages:

[0105] (1) The present invention adopts a stapler magazine with an identification mechanism, which ensures that it can identify whether the stapler magazine assembly of the laparoscopic stapler is installed on the stapler magazine body of the laparoscopic stapler, and can effectively avoid medical accidents caused by re-firing or forgetting to replace the assembly and re-firing, thereby greatly reducing medical risks.

[0106] (2) The present invention uses a first elastic component, a first sliding component, a second sliding component, and a movable component to cooperate with each other to limit the sliding of the cutting knife in the knife groove, which can effectively avoid the occurrence of operator's misoperation.

[0107] (3) The present invention has a simple structure, good effect, low cost and easy process implementation.

[0108] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Those skilled in the art may make some simple modifications, equivalent changes or modifications using the technical contents disclosed above, which all fall within the protection scope of the present invention.

Claims

1. A stapler stapler, comprising a stapler seat, a stapler assembly, a stapler base and a fixed block component, wherein the fixed block component comprises two mutually parallel supporting parts, a knife groove of a cutting knife is arranged between the two supporting parts, a proximal end of the stapler seat and a proximal end of the stapler base are movably hinged through the fixed block component, and the stapler assembly is located between the stapler seat and the stapler base, characterized in that: The upper end surface of at least one supporting portion of the fixed block member is provided with an opening groove, and the identification mechanism is located in the opening groove for identifying whether the staple cartridge assembly is installed in the staple cartridge; The identification mechanism includes a first elastic component, a first sliding component, a second sliding component, and a movable component; The proximal end of the first elastic component is located in the groove of the distal end surface of the support portion, the distal end of the first elastic component is connected to the proximal end of the first sliding component, and the first sliding component exerts a driving force on the first elastic component to make the first elastic component store energy or release energy, thereby driving the first sliding component to slide in the horizontal direction; A second sliding component capable of sliding up and down is provided between the first sliding component and the movable component, and the second sliding component is used to limit the sliding distance of the first sliding component and to control the closing and opening actions of the movable component; When the movable part is in an open state, the distal end of the movable part is higher than the upper surface end face of the support part, and when the cutting knife slides in its knife groove, the knife holder of the cutting knife is prevented from moving forward due to the action of the movable part, so that the cutting knife cannot be fired; When the movable component is in a closed state, the distal end of the movable component is not higher than the end surface of the upper surface of the supporting portion, and the cutting knife can smoothly slide in its knife groove.

2. The stapler magazine of claim 1, wherein: The first elastic component is a spring. A protrusion is provided at the proximal end of the first sliding component. The spring is sleeved on the protrusion of the first sliding component. The length of the spring is greater than the length of the protrusion of the first sliding component.

3. The stapler magazine of claim 2, wherein: The first sliding component is a sliding rod, the upper end surface of the sliding rod is provided with a slope groove, including a first table surface, a slope surface, and a second table surface, and the lower end of the second sliding component is located on the first table surface / the second table surface according to the sliding position of the first sliding component; When the second sliding component is located on the first table surface, the movable component is in a closed state. When the second sliding component is located on the second table surface, the movable component is in an open state.

4. The stapler magazine of claim 3, wherein: The second sliding component is a support block, and the inner walls on both sides of the opening groove are provided with a clamping groove that can be clamped with the support block, and the horizontal sliding of the sliding rod drives the support block to move up and down in the clamping groove; The upper end surface of the support block is an arc-shaped end surface, and cooperates with the limiting portion of the lower end surface of the movable component. The support block moves up and down in the slot to enable the movable component to close and open.

5. The stapler magazine of claim 4, wherein: The identification mechanism further comprises a fixing component, which can fix the movable component so that the movable component can be axially rotated with the fixing component as an axis to realize closing and opening actions.

6. The stapler magazine of claim 5, wherein: The movable component is a hook, and a first through hole is provided on one end face of the hook. A second through hole and a third through hole are respectively provided on both sides of the opening of the support portion. The first through hole, the second through hole and the third through hole are coaxial holes. The fixed component is a pin, and the pin passes through the first through hole, the second through hole and the third through hole respectively, and is fixed at the third through hole.

7. The stapler magazine of claim 6, wherein: The hook is provided with a recessed portion. When the hook rotates circumferentially with the pin as an axis, a section formed by the recessed portion of the hook slides with the protrusion of the support block as an axis.

8. The stapler magazine of claim 6, wherein: The identification mechanism further includes a second elastic component, which is located in a groove on the upper end surface of the support portion. The distal end of the second elastic component is connected to the hook and can provide elastic force to the hook.

9. The stapler magazine of claim 8, wherein: The second elastic component includes a sleeve and a second spring. The sleeve is provided with a groove for accommodating a portion of the second spring. The depth of the groove is smaller than the length of the second spring.

10. A stapler, characterized in that: It comprises a nail magazine as described in any one of claims 1 to 9.

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