Soft tissue fixation surgical instrument

Abstract

The application discloses a soft tissue fixing surgical instrument and belongs to the technical field of medical instruments. The soft tissue fixing surgical instrument comprises a body assembly, a nail tube assembly and a nail magazine assembly. The nail tube assembly comprises a shell, an outer tube, an inner tube located in the outer tube and a flexible shaft located in the inner tube. The rear end of the outer tube is fixed with the front end of the body through the shell. The front end of the inner tube is welded with the front end of the outer tube. One end of a rotating rod is arranged in the inner tube and connected with the flexible shaft. A plurality of first gap grooves are arranged on the front segment of the outer tube. A plurality of second gap grooves are arranged on the lower tube wall of the front segment of the inner tube. A front top mechanism is arranged on the shell and used for pushing the inner tube to move forward so that the front segment of the outer tube, the front segment of the inner tube and the flexible shaft are bent at a set angle. The nail magazine assembly comprises a nail magazine tube, a rotating head arranged in the nail magazine tube and absorbable nails. The nail magazine tube is detachably connected with the outer tube. The end of the flexible shaft, which is away from the rotating rod, is connected with the rotating head, so that the nail tube assembly can be bent and normally fire the absorbable nails.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical instruments, in particular to a soft tissue fixation surgical instrument. BACKGROUND

[0002] With the continuous improvement of user demand, laparoscopic surgery has gradually replaced traditional surgery and has been widely used in general surgery, gynecology and cardiothoracic surgery because of its small trauma, small physiological disturbance to patients, good cosmetic effect, light pain and fast recovery. Laparoscopic surgery requires a hole to be opened in the patient's abdomen, and surgical instruments enter the surgical site through the puncture cannula for operation.

[0003] At present, the fixing method of laparoscopic repair can be roughly divided into four types, namely non-absorbable nails, absorbable nails, sutures and glue. In summary of the four fixing methods, the absorbable nail fixing is currently a better way, which can greatly reduce foreign body reaction, pain, adhesion and other adverse reactions.

[0004] The existing CN105496482B discloses an absorbable nail and a soft tissue fixation device containing the absorbable nail, which can effectively fix in laparoscopic repair fixation. Such a fixator is straight, and cannot be bent during surgery. Secondly, due to the limitation of internal space and angle, the nail tube and the nail joint cannot be in a vertical state, resulting in poor fixing effect; even some surgical sites need to be punctured again on the other side of the abdomen, and the fixator is pulled out, and the surgical site is accessed through the puncture cannula on the other side, which is complicated, prolongs the operation time and increases the risk of infection of the patient.

[0005] Therefore, it is urgent to provide a soft tissue fixation surgical instrument to solve the above problems. SUMMARY

[0006] The purpose of the present application is to provide a soft tissue fixation surgical instrument, which is bent at a certain angle to ensure that the nail tube and the nail joint are perpendicular, effectively improve the fixing of the nail joint, reduce the use of the puncture cannula and the wound of the human body, and is simple to operate, shortens the operation time.

[0007] To achieve the above purpose, the following technical solutions are provided:

[0008] The soft tissue fixation surgical instrument comprises:

[0009] The body assembly comprises a machine body and a rotating rod rotatably arranged on the machine body.

[0010] The nail tube assembly comprises a shell, an outer tube, an inner tube located in the outer tube, and a flexible shaft located in the inner tube, the rear end of the outer tube is fixed with the front end of the fuselage through the shell, the front end of the inner tube is welded with the front end of the outer tube, one end of the rotating rod is arranged in the inner tube and connected with the flexible shaft; a plurality of first gap grooves are arranged on the front segment of the outer tube along the length direction of the outer tube, a plurality of second gap grooves are arranged on the lower tube wall of the inner tube along the length direction of the inner tube.

[0011] The front top mechanism is arranged on the shell and used for pushing the inner tube to move forward to make the front segment of the outer tube, the front segment of the inner tube and the flexible shaft bend at a set angle.

[0012] The nail magazine assembly comprises a nail magazine tube, a rotating head arranged in the nail magazine tube and absorbable nails, the nail magazine tube is detachably connected with the outer tube, and one end of the flexible shaft away from the rotating rod is connected with the rotating head.

[0013] As an optional solution of the soft tissue fixation surgical instrument, the nail tube assembly further comprises an extension tube and a displacement ring sleeved on the extension tube, the extension tube is slidingly arranged at the front end of the shell, the outer tube is arranged in the extension tube, and the lower end of the displacement ring extends out of the shell.

[0014] As an optional solution of the soft tissue fixation surgical instrument, the front top mechanism comprises a screw post, the rear end of the shell is rotationally arranged at the front end of the fuselage, the screw post is threadedly connected with a threaded groove in the shell, the outer tube is provided with an avoiding groove extending along the length direction of the outer tube, and the screw post is connected with the inner tube through the avoiding groove.

[0015] As an optional solution of the soft tissue fixation surgical instrument, the front top mechanism comprises a rotating block and a push block, the rear end of the shell is fixedly arranged at the front end of the fuselage, the rotating block is rotationally arranged on the shell, a convex cylinder at the bottom of the rotating block extends into a guide groove at the top of the push block, the outer tube is provided with an avoiding groove extending along the length direction of the outer tube, and the push block is connected with the inner tube through the avoiding groove.

[0016] As an optional solution of the soft tissue fixation surgical instrument, the nail tube assembly further comprises a connecting tube, the rear end of the connecting tube is welded with the front end of the outer tube, and the front end of the connecting tube is clamped with the rear end of the nail magazine tube.

[0017] As an optional solution of the soft tissue fixation surgical instrument, the front end of the connecting tube is provided with a plurality of L-shaped grooves, the rear end of the nail magazine tube is provided with a plurality of convex points, and the convex points are clamped in the L-shaped grooves.

[0018] As an alternative to the soft tissue fixation surgical instrument, the nail tube assembly further comprises a steel wire pull rope, one end of which is welded to the front end of the outer tube.

[0019] As an alternative to the soft tissue fixation surgical instrument, the body assembly further comprises a trigger, a reset tension spring, a drive gear, a large helical gear, a small helical gear and a rotating wheel, the first end of the reset tension spring is arranged on the fixed column of the inner wall of the body, the second end of the reset tension spring is arranged on the trigger, the lower end of the trigger is rotatably connected with the inner wall of the body through a rotating shaft, the upper end of the trigger is equipped with a helical gear matched with the drive gear; the large helical gear is concentrically arranged with the drive gear, the drive gear can selectively drive the large helical gear; the outer teeth of the large helical gear are engaged with the outer teeth of the small helical gear, one end of the rotating wheel is fixedly connected with the rotating rod, the other end of the rotating wheel is selectively connected with the small helical gear.

[0020] As an alternative to the soft tissue fixation surgical instrument, the back surface of the large helical gear is provided with a ring of ratchet teeth, the inner wall of the body is provided with a pawl spring, one end of the pawl spring abuts between two adjacent ratchet teeth.

[0021] As an alternative to the soft tissue fixation surgical instrument, the body assembly further comprises an insurance push block for pushing the rotating wheel to move a set distance relative to the body.

[0022] Compared with the prior art, the soft tissue fixation surgical instrument has the following beneficial effects:

[0023] The soft tissue fixation surgical instrument provided by the application, the surgical instrument mainly realizes the firing of the absorbable nails in the nail magazine tube through the rotation of the rotating rod, the flexible shaft and the rotating head on the body, the outer tube, the inner tube and the flexible shaft of the nail tube assembly are all flexible, the inner tube is located in the outer tube, the front end of the inner tube is welded to the front end of the outer tube, the directions of the cutting grooves of the inner tube and the outer tube are opposite, a plurality of first gap grooves are cut in the outer tube wall at the front section of the outer tube, a plurality of second gap grooves are cut in the inner tube wall at the front section of the inner tube, the first gap grooves cut in the outer tube serve to control the maximum angle of bending, the second gap grooves cut in the inner tube serve to facilitate the normal firing after bending; when bending is needed, the front pushing mechanism pushes the inner tube to move forward, so that the front section of the outer tube, the front section of the inner tube and the flexible shaft are bent by a certain angle, to adapt to the position fixed by the laparoscopic repair, and the front end can bear a certain force value, and the bending can also be normally fired; since the outer tube, the inner tube and the flexible shaft are flexible, the nail magazine assembly adapts to the limitation of the internal space and angle of the tissue, the position where the nail tube and the nail are combined is in a perpendicular state, the fixing effect is improved; at the same time, the use of the puncture sleeve and the wound of the human body is reduced, the operation is simple, and the operation time is shortened. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of the contents of the embodiments of the present application and the drawings.

[0025] Figure 1 A schematic view of the soft tissue fixation surgical instrument in the embodiment of the present application in an unbent state;

[0026] Figure 2 A schematic view of the soft tissue fixation surgical instrument in the embodiment of the present application in a bent state;

[0027] Figure 3 A sectional view of the body assembly and the staple tube assembly in the embodiment of the present application;

[0028] Figure 4 A structural schematic view of the staple cartridge assembly in the embodiment of the present application;

[0029] Figure 5 An exploded schematic view of the staple tube assembly in the embodiment of the present application;

[0030] Figure 6 A sectional view of the staple tube assembly in the embodiment of the present application;

[0031] Figure 7 A structural schematic view of the inner tube with a stud in the embodiment of the present application;

[0032] Figure 8 A Figure 7 partial enlarged view of A in FIG. 7;

[0033] Figure 9 A structural schematic view of the outer tube in the embodiment of the present application;

[0034] Figure 10 A Figure 9 partial enlarged view of B in FIG. 8;

[0035] Figure 11 A structural schematic view of the driving gear in the embodiment of the present application;

[0036] Figure 12 A structural schematic view of the first perspective of the large helical gear in the embodiment of the present application;

[0037] Figure 13 A structural schematic view of the second perspective of the large helical gear in the embodiment of the present application;

[0038] Figure 14Structure diagram of the pawl elastic sheet in the first embodiment of the present application;

[0039] Figure 15 Explosion diagram of the connecting pipe and the nail magazine pipe in the first embodiment of the present application;

[0040] Figure 16 Explosion diagram of the small bevel gear and the rotating wheel in the first embodiment of the present application;

[0041] Figure 17 Structure diagram of the safety push block in the first embodiment of the present application;

[0042] Figure 18 Structure diagram of the front jacking mechanism including the rotating block in the third embodiment of the present application.

[0043] Reference signs:

[0044] 100, body assembly; 200, nail pipe assembly; 300, nail magazine assembly;

[0045] 101, body; 102, rotating rod; 103, trigger; 104, return tension spring; 105, driving gear; 1051, protrusion; 106, large bevel gear; 1061, ratchet teeth; 1062, arc trajectory slot; 107, small bevel gear; 108, rotating wheel; 109, pawl elastic sheet; 1010, safety push block;

[0046] 201, shell; 2011, threaded groove; 2011, sliding groove; 202, outer pipe; 2021, avoidance slot; 2022, first gap slot; 203, inner pipe; 2031, second gap slot; 204, flexible shaft; 205, extension pipe; 206, displacement ring; 207, stud; 208, rotating block; 209, push block; 210, connecting pipe; 2101, L-shaped recess;

[0047] 301, nail magazine pipe; 3011, protrusion; 302, rotating head; 303, absorbable nail; 304, lead spring; 305, driving rod. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0049] Therefore, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the application as claimed, but merely represents selected embodiments of the application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the application without creative labor fall within the scope of protection of the application.

[0050] It should be noted that similar reference numbers and letters refer to similar items in the following drawings, and therefore, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0051] In the description of the application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the application is usually placed, and are only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance. In the description of the application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0052] In the description of the application, it should also be noted that, unless otherwise specified and limited, the terms "provided", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected. For those of ordinary skill in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0053] In the present application, unless otherwise specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "over", "above" and "on" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "under", "below" and "under" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0054] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0055] Soft tissue fixation devices containing absorbable staples are straight and cannot be bent during surgery. Secondly, due to limitations in internal space and angle, the staple tube and the fixation site cannot be in a perpendicular position, resulting in poor fixation. In some cases, it is even necessary to perform a second puncture on the other side of the abdomen, remove the fixator, and enter the surgical site through a puncture cannula on the other side, which is complicated, prolongs the operation time, and increases the risk of infection for the patient.

[0056] To ensure the staple cannula is perpendicular to the stapled area by bending it at a certain angle, effectively improving the fixation of the staple, while reducing the use of puncture cannulas and the number of wounds on the body, and simplifying the operation and shortening the operation time, this embodiment provides a soft tissue fixation surgical instrument. The following describes the instrument in conjunction with... Figures 1 to 18 The specific content of this embodiment will be described in detail.

[0057] Example 1

[0058] In this embodiment, as Figure 1 A diagram showing the soft tissue fixation surgical instruments in an unbent state. Figure 2 The schematic diagram shows a soft tissue fixation surgical instrument in a bent state. The instrument includes a body assembly 100, a staple tube assembly 200, a front-mounted mechanism, and a staple cartridge assembly 300. Among them, as shown... Figure 3 As shown in the cross-sectional view of the device body assembly and the nail tube assembly, the device body assembly 100 includes a body 101 and a rotating rod 102 rotatably disposed on the body 101. The nail tube assembly 200 includes a housing 201, an outer tube 202, an inner tube 203 located inside the outer tube 202, and a flexible shaft 204 located inside the inner tube 203. The rear end of the outer tube 202 passes through the housing 201 and is fixed to the front end of the body 101. The front end of the inner tube 203 is welded to the front end of the outer tube 202. One end of the rotating rod 102 passes through the inner tube 203 and is connected to the flexible shaft 204. The upper wall of the front section of the outer tube 202 is provided with a plurality of first gap grooves 2022 spaced apart along its own length direction, and the lower wall of the front section of the inner tube 203 is provided with a plurality of second gap grooves 2031 spaced apart along its own length direction. A front-pushing mechanism is mounted on the housing 201 and is used to push the inner tube 203 forward, causing the front section of the outer tube 202, the front section of the inner tube 203, and the flexible shaft 204 to bend at a set angle. Figure 4As shown in the structural schematic diagram of the nail magazine assembly, the nail magazine assembly 300 comprises a nail magazine tube 301, a rotating head 302 arranged in the nail magazine tube 301 and absorbable nails 303, the nail magazine tube 301 is detachably connected with the outer tube 202, and the soft shaft 204 is connected with the rotating head 302 at the end away from the rotating rod 102.

[0059] Briefly, the soft tissue fixation surgical instrument provided by the present application mainly realizes the firing of the absorbable nails 303 in the nail magazine tube 301 through the rotation of the rotating rod 102, the soft shaft 204 and the rotating head 302 on the machine body 101, the outer tube 202, the inner tube 203 and the soft shaft 204 of the nail tube assembly 200 are all flexible, the inner tube 203 is located in the outer tube 202, the front end of the inner tube 203 is welded with the front end of the outer tube 202, the directions of the cutting grooves of the inner and outer tubes 202 are opposite, a plurality of first gap grooves 2022 are cut in the outer tube 202 at the front segment of the tube wall, a plurality of second gap grooves 2031 are cut in the inner tube 203 at the lower tube wall of the front segment, the first gap grooves 2022 cut in the outer tube 202 are used to control the maximum angle of bending, the second gap grooves 2031 cut in the inner tube 203 are used to reset smoothly after bending; when bending is needed, the front top mechanism pushes the inner tube 203 to move forward to make the outer tube 202, the inner tube 203 and the soft shaft 204 bend at a certain angle, achieving the function of bending, adapting to the position of laparoscopic repair fixation, and the front end can withstand a certain force value, and the bending can also be normally fired; since the outer tube 202, the inner tube 203 and the soft shaft 204 are bendable, the nail magazine assembly 300 can adapt to the internal space and angle limitation of the tissue, the position where the nail tube and the nail are combined can be in a perpendicular state, improving the fixation effect; at the same time, the use of puncture trocar and the wound of the human body is reduced, and the operation is simple, shortening the operation time.

[0060] Further, as Figure 3 The cross-sectional view of the machine body assembly and the nail tube assembly is shown in Figure 6 As shown in the cross-sectional view of the nail tube assembly, the nail tube assembly 200 further comprises an extension tube 205 and a displacement ring 206 sleeved on the extension tube 205, the extension tube 205 is slidingly arranged at the front end of the shell 201, the outer tube 202 is arranged in the extension tube 205, and the lower end of the displacement ring 206 extends out of the shell 201. The function of the extension tube 205 is: when the outer tube 202, the inner tube 203 and the soft shaft 204 need to be bent, the extension tube 205 is pulled backward to leave space for the bent part; at the same time, the extension tube 205 is pushed out of the sliding groove 2011 of the shell 201 to make the outer tube 202 completely located in the extension tube 205 when the outer tube 202, the inner tube 203 and the soft shaft 204 change from the bent state to the straight state and do not need to be bent, the outer tube 202 and the inner tube 203 have a certain micro-deformation due to the rigid material, and the extension tube 205 is pushed forward to well compensate for the defects.

[0061] Further, as Figure 3 The cross-sectional view of the body assembly and the staple tube assembly and Figure 6 The front top mechanism includes a stud 207, the rear end of the shell 201 is rotatably arranged at the front end of the body 101, the stud 207 is threadedly connected with a threaded groove 2011 in the shell 201, the outer tube 202 is provided with a relief groove 2021 extending along the length direction of the outer tube 202, and the stud 207 is connected with the inner tube 203 by penetrating the relief groove 2021. The shell 201 of the staple tube assembly 200 is connected with the body 101 through a circular groove track, and the shell 201 can move circumferentially along the circular groove track; since the shell 201 is axially limited in the circular groove, when the shell 201 rotates, the stud 207 drives the inner tube 203 to move forward and backward, thereby realizing the bending function of the outer tube 202, the inner tube 203 and the flexible shaft 204.

[0062] Further, as Figure 5 The exploded view of the staple tube assembly and Figure 15 As shown in the exploded view of the connecting tube and the staple cartridge tube, the staple tube assembly 200 further includes a connecting tube 210, the rear end of the connecting tube 210 is welded with the front end of the outer tube 202, and the front end of the connecting tube 210 is clamped with the rear end of the staple cartridge tube 301. One end of the connecting tube 210 is connected with the end of the outer tube 202 away from the body assembly 100, and the other end of the connecting tube 210 is installed with the staple cartridge tube 301. By additionally arranging the connecting tube 210, the replacement of the staple cartridge tube 301 is facilitated.

[0063] Specifically, as Figure 15 As shown in the exploded view of the connecting tube and the staple cartridge tube, the front end outer wall surface of the connecting tube 210 is concavely provided with three L-shaped grooves 2101, and the rear end inner wall surface of the staple cartridge tube 301 is convexly provided with three protrusions 3011, the protrusions 3011 are clamped in the L-shaped grooves 2101. The three protrusions 3011 of the staple cartridge tube 301 are matched with the three L-shaped grooves 2101 of the connecting tube 210, and the staple cartridge tube 301 is fixed by being rotated clockwise; when disassembled, the staple cartridge assembly 300 is rotated counterclockwise and pulled out outward, so that it can be disassembled.

[0064] Further, as Figure 3The cross-sectional view of the body assembly and the nail tube assembly shows that the body assembly 100 further comprises a trigger 103, a reset tension spring 104, a driving gear 105, a large helical gear 106, a small helical gear 107 and a rotating wheel 108. The first end of the reset tension spring 104 is arranged on the fixed column of the inner wall of the body 101, and the second end of the reset tension spring 104 is arranged on the trigger 103. The lower end of the trigger 103 is rotatably connected to the inner wall of the body 101 through a rotating shaft, and the upper end of the trigger 103 is equipped with a helical tooth matched with the driving gear 105. The large helical gear 106 is concentrically arranged with the driving gear 105, and the driving gear 105 can selectively drive the large helical gear 106. The outer teeth of the large helical gear 106 are engaged with the outer teeth of the small helical gear 107. One end of the rotating wheel 108 is fixedly connected with the rotating rod 102, and the other end of the rotating wheel 108 is selectively connected with the small helical gear 107.

[0065] Specifically, the trigger 103 is connected with the upper shell of the body 101 through a shaft, and the trigger 103 can rotate clockwise around the shaft of the upper shell to a certain angle and then be reset counterclockwise by the reset tension spring 104.

[0066] Specifically, as shown in the structure diagram of the pawl elastic sheet, Figure 3 the cross-sectional view of the body assembly and the nail tube assembly, Figure 11 the structure diagram of the driving gear, Figure 12 the structure diagram of the large helical gear from the first perspective, Figure 13 the structure diagram of the large helical gear from the second perspective, Figure 14 and the structure diagram of the pawl elastic sheet, the driving gear 105 is located above the large helical gear 106 and coaxial with the large helical gear 106, and the driving gear 105 has a protruding part 1051 below. The corresponding part of the large helical gear 106 has an arc-shaped track groove 1062, which functions to drive the large helical gear 106 to rotate. Further, the back of the large helical gear 106 is provided with a ring of ratchet teeth 1061, and the inner wall of the body 101 is provided with a pawl elastic sheet 109, one end of which abuts between two adjacent ratchet teeth 1061. There is a pawl elastic sheet 109 below the large helical gear 106, which functions to prevent the large helical gear 106 from rotating clockwise and ensure that the large helical gear 106 can only rotate in one direction.

[0067] Specifically, the clockwise rotation of the gear on the trigger 103 drives the driving gear 105 to rotate counterclockwise, and the rotation directions of the two are opposite. The driving gear 105 drives the large helical gear 106 to rotate counterclockwise in the same direction through the protruding part 1051 and the arc-shaped track groove 1062. When the trigger 103 is reset, the driving gear 105 rotates clockwise, and the large helical gear 106 cannot rotate clockwise due to the pawl elastic sheet 109.

[0068] Specifically, the small helical gear 107 is fixed to the upper shell of the small helical gear 107. The gear part of the small helical gear 107 meshes with the large helical gear 106. As the large helical gear 106 rotates counterclockwise, the small helical gear 107 rotates clockwise perpendicular to the plane of the large helical gear 106, which changes the direction of spatial rotation.

[0069] Specifically, the rotating head 302, flexible shaft 204, rotating rod 102 and rotating wheel 108 are connected together, and the coaxiality of the four parts must be ensured. Furthermore, the rotating head 302, flexible shaft 204, rotating rod 102 and rotating wheel 108 cannot rotate relative to each other.

[0070] Furthermore, the body assembly 100 also includes a safety pusher 1010 for pushing the wheel 108 to move a set distance relative to the body 101.

[0071] Specifically, such as Figure 16 As shown, the rotating wheel 108 has an outwardly protruding insertion part on the side near the small helical gear 107, and an inwardly recessed insertion groove on the side of the small helical gear 107 near the rotating wheel 108. Under the pushing action of the safety pusher 1010, the insertion part of the rotating wheel 108 can connect or disconnect horizontally from the insertion groove of the small helical gear 107. An insertion tube is provided at the end of the rotating wheel 108 away from the small helical gear 107, and the end of the rotating rod 102 away from the flexible shaft can be inserted into the insertion tube to connect the rotating wheel 108 and the rotating rod 102. A small hole is provided on the side wall of the insertion tube, through which a connecting pin can pass to abut against the rotating rod 102 inside the insertion tube, ensuring a secure connection between the rotating wheel 108 and the rotating rod 102.

[0072] Specifically, such as Figure 16 Explosion diagram of small helical gear and rotating wheel combined Figure 17 As shown in the structural diagram of the safety push block, the rotating wheel 108 is provided with two limiting circular plates. One end of the safety push block 1010 can be hooked between the two limiting circular plates. When the safety push block 1010 moves, it can ensure that the rotating wheel 108 can also move with the safety push block 1010.

[0073] The functions of the three control points of the safety push block 1010 are as follows: When it is at the first control point, the trigger 103 cannot be fired, and the rotating head 302 connected to the rotating wheel 108 is located at the left end; when it is at the second control point, the trigger 103 still cannot be fired, and it is used to load and unload the nail magazine assembly 300; when it is at the third control point, the rotating head 302 connected to the rotating wheel 108 is exactly in the middle of the two arcs of the drive rod 305 of the nail magazine assembly 300, the trigger 103 can be fired normally, and at the same time the rotating device moves normally, and the absorbable nail 303 can be fired.

[0074] Specifically, the pinion 107 and the rotating wheel 108 are matched by convex and concave grooves, when the pinion 107 rotates, the rotating wheel 108 is driven to rotate; at the same time, the safety push block 1010 controls the forward and backward displacement of the rotating wheel 108.

[0075] Specifically, the two-arc structure of one end of the driving rod 305 limits the front end of the rotating head 302 to be able to extend into the driving rod 305 and drive the driving rod 305 to rotate; at the same time, the protruding part 1051 of the driving rod 305 limits the axial displacement in the middle of the gasket.

[0076] Specifically, the other end of the driving rod 305 is slotted on both sides for placing the tail wing of the absorbable nail 303, and the absorbable nail 303 is helically fired along the trajectory of the pitch spring 304 with the rotation of the driving rod 305.

[0077] Embodiment two

[0078] The embodiment provides a soft tissue fixation surgical instrument, compared with embodiment one, the basic structure of the soft tissue fixation surgical instrument provided by the embodiment is the same as that of embodiment one, only the setting of the steel wire pull rope is different, and the same structure as that of embodiment one is not repeated.

[0079] Further, the nail tube assembly 200 further comprises a steel wire pull rope, one end of the steel wire pull rope is welded with the front end of the outer tube 202.

[0080] Exemplarily, the steel wire pull rope can be located in the outer tube 202, when bending is needed, the other end of the steel wire pull rope is pulled backward to realize the bending of the outer tube 202. In actual use, the outer tube 202 can be bent in a set direction by controlling the pulling direction of the steel wire pull rope.

[0081] In other application scenarios, the steel wire pull rope can also be located outside the outer tube 202 or the steel wire pull rope can also be located in the inner tube 203, which is not limited too much here.

[0082] Embodiment three

[0083] The embodiment provides a soft tissue fixation surgical instrument, compared with embodiment one, the basic structure of the soft tissue fixation surgical instrument provided by the embodiment is the same as that of embodiment one, only the setting of the steel wire pull rope is different, and the same structure as that of embodiment one is not repeated.

[0084] Further, as Figure 18The front jacking mechanism includes a structure diagram of a rotating block, the front jacking mechanism includes a rotating block 208 and a push block 209, the rear end of the shell 201 is fixedly arranged at the front end of the fuselage 101, the rotating block 208 is rotationally arranged on the shell 201, the convex cylinder at the bottom of the rotating block 208 extends into the guide groove at the top of the push block 209, the outer tube 202 is provided with an avoiding groove 2021, the avoiding groove 2021 extends along the length direction of the outer tube 202, and the push block 209 is connected with the inner tube 203 by penetrating the avoiding groove 2021 by a pin. The inner tube 203 can be moved by the push block 209 by rotating the rotating block 208, and the bending function is realized.

[0085] It should be noted that the above are only the preferred embodiments of the present application and the technical principles applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, readjustments and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A soft tissue fixation surgical instrument, characterized by, The utility model relates to a kind of surgical stapler, including: Body assembly (100), including fuselage (101) and rotationally arranged in the rotating rod (102) of the fuselage (101); Nail tube assembly (200), including shell (201), outer tube (202), inner tube (203) located in the outer tube (202) and flexible shaft (204) located in the inner tube (203), the rear end of the outer tube (202) passes through the shell (201) and is fixed with the front end of the fuselage (101), the front end of the inner tube (203) is welded with the front end of the outer tube (202), one end of the rotating rod (102) is arranged in the inner tube (203) and is connected with the flexible shaft (204);The outer tube (202) is provided with a plurality of first gap grooves (2022) on the front segment of the tube wall along the length direction of itself, and the inner tube (203) is provided with a plurality of second gap grooves (2031) on the lower tube wall of the front segment along the length direction of itself; Front top mechanism, arranged on the shell (201), for pushing the inner tube (203) to move forward to make the front segment of the outer tube (202), the front segment of the inner tube (203) and the flexible shaft (204) bend to a set angle; Nail magazine assembly (300), including nail magazine tube (301), rotating head (302) arranged in the nail magazine tube (301) and absorbable nail (303), the nail magazine tube (301) is detachably connected with the outer tube (202), and the end of the flexible shaft (204) away from the rotating rod (102) is connected with the rotating head (302); The front top mechanism includes stud (207), the rear end of the shell (201) is rotationally arranged in the front end of the fuselage (101), the stud (207) is threadedly connected with the thread groove (2011) in the shell (201), the outer tube (202) is provided with avoiding slot (2021), the avoiding slot (2021) extends along the length direction of the outer tube (202), and the stud (207) is connected with the inner tube (203) by pin through the avoiding slot (2021);Or, The front top mechanism includes rotating block (208) and push block (209), the rear end of the shell (201) is fixedly arranged in the front end of the fuselage (101), the rotating block (208) is rotationally arranged on the shell (201), the convex cylinder on the bottom of the rotating block (208) extends into the guide groove on the top of push block (209), the outer tube (202) is provided with avoiding slot (2021), the avoiding slot (2021) extends along the length direction of the outer tube (202), and the push block (209) is connected with the inner tube (203) by pin through the avoiding slot (2021).

2. The soft tissue fixation surgical apparatus of Claim 1, wherein, The nail tube assembly (200) further comprises an extension tube (205) and a displacement ring (206) sleeved on the extension tube (205), the extension tube (205) is slidingly arranged at the front end of the shell (201), the outer tube (202) is arranged in the extension tube (205), and the lower end of the displacement ring (206) extends out of the shell (201).

3. The soft tissue fixation surgical apparatus of Claim 1, wherein, The nail tube assembly (200) further comprises a connecting tube (210), the rear end of the connecting tube (210) is welded with the front end of the outer tube (202), and the front end of the connecting tube (210) is clamped with the rear end of the nail magazine tube (301).

4. The soft tissue fixation surgical apparatus of Claim 3, wherein, The front end of the connecting tube (210) is concave with a plurality of L-shaped grooves (2101), and the rear end of the nail magazine tube (301) is convex with a plurality of convex points (3011), and the convex points (3011) are clamped in the L-shaped grooves (2101).

5. The soft tissue fixation surgical apparatus of Claim 2, wherein, The nail tube assembly (200) further comprises a steel wire pull rope, one end of the steel wire pull rope is welded with the front end of the outer tube (202).

6. The soft tissue fixation surgical instrument of any of claims 1-5, wherein, The body assembly (100) further comprises a trigger (103), a reset tension spring (104), a drive gear (105), a large helical gear (106), a small helical gear (107) and a rotating wheel (108), the first end of the reset tension spring (104) is arranged on the fixed column of the inner wall of the body (101), the second end of the reset tension spring (104) is arranged on the trigger (103), the lower end of the trigger (103) is rotatably connected with the inner wall of the body (101) through a rotating shaft, and the upper end of the trigger (103) is provided with a helical tooth matched with the drive gear (105); the large helical gear (106) is concentrically arranged with the drive gear (105), and the drive gear (105) can selectively drive the large helical gear (106); the outer teeth of the large helical gear (106) are engaged with the outer teeth of the small helical gear (107), one end of the rotating wheel (108) is fixedly connected with the rotating rod (102), and the other end of the rotating wheel (108) is selectively connected with the small helical gear (107).

7. The soft tissue fixation surgical apparatus of Claim 6, wherein, The back of the large helical gear (106) is provided with a ring of ratchet teeth (1061), and the inner wall of the body (101) is provided with a pawl spring (109), one end of the pawl spring (109) abuts between two adjacent ratchet teeth (1061).

8. The soft tissue fixation surgical apparatus of Claim 6, wherein, The body assembly (100) further comprises a safety push block (1010) for pushing the rotating wheel (108) to move a set distance relative to the body (101).

Images