[0043] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and not to limit the present invention.
[0044] The cutting suture device of the present invention includes a jaw assembly, a connecting assembly connected to the jaw assembly, a jaw driving assembly, a handle assembly, a housing 1 and a cutting device. For convenience, in the following description, the end far away from the operator (that is, the end close to the nail seat) is called the front end, and the end close to the operator (that is, the end close to the fixed handle) is called the rear end.
[0045] Such as Figure 1-3 As shown, the jaw assembly includes a nail abutment base bracket 2, a nail abutment base 3 arranged at the front end of the nail abutment base bracket 2, a nail cartridge 4, and a nail cartridge bracket 5 arranged in the nail abutment base bracket 2. The nail cartridge 4 is installed in the cavity 9 at the front end of the nail cartridge bracket 5, the middle and lower part of the nail seat bracket 2 is provided with a first chute 6, and the upper part of the rear end of the nail seat bracket 2 is provided with The slide rail 7 is provided with a second slide groove 8 at the top of the rear end of the nail magazine bracket 5, the lower end of the nail magazine 4 is slidably arranged in the first slide groove 6, and the slide rail 7 is slidably arranged on the first slide groove 6. The second chute is 8.
[0046] Such as figure 2 As shown, the nail abutment bracket 2 is a hollow structure, the front end of the nail abutment bracket 2 can be installed with a nail bracket 3 or other possible components (such as a cutter), and the rear end of the nail abutment bracket 2 is used for Accommodate the staple cartridge bracket 5. Such as figure 2 As shown in the C-C view, the first chute 6 is provided on the inner walls of both sides of the middle and lower part of the stud base bracket 2. Preferably, the first chute 6 opens inward and has a rectangular cross section. Since the opening of the first chute 6 faces inward, the first chute 6 can limit the staple cartridge 4 while playing a guiding role, so that when the jaw assembly is closed or the firing operation is performed Prevent the staple cartridge 4 from moving up. In addition, in the embodiment shown in the drawings, the cross section of the slide rail 7 is designed as a dovetail shape.
[0047] From image 3 It can be seen that the second slide groove 8 that cooperates with the slide rail 7 is provided on the upper part of the rear end of the staple cartridge bracket 5. Preferably, the shape of the second slide groove 8 is designed to be able to fit the slide rail 7 well, so that the slide rail 7 can slide freely in the second slide groove 8.
[0048] Figure 4 Two forms when the slide rail and the second slide groove are used together are given. Preferably, as Figure 4 In the form shown in (a), the two sides of the notch of the second slide groove 8 are designed as a curved transition structure, and are clamped on both sides of the dovetail slide rail 7. More preferably, as Figure 4 In the form shown in (b), spherical grooves are opened on the inner walls of both sides of the second slide groove 8 to accommodate the compact arrangement between the slide rail 7 and the second slide groove 8. Ball 8a, this arrangement can reduce sliding resistance.
[0049] In addition, the front end of the staple cartridge bracket 5 is provided with a cavity 9 that can accommodate the staple cartridge 4. Preferably, the inner walls on both sides of the cavity 9 are provided with elongated protrusions or grooves along the longitudinal direction, and corresponding parts on the outer wall of the staple cartridge 4 are provided with elongated grooves or protrusions along the longitudinal direction. Therefore, the staple cartridge 4 can be firmly installed in the cavity 9.
[0050] In order to slide the staple cartridge 4 in the first chute 6, the lower part of the staple cartridge 4 protrudes out of the cavity 9 of the staple cartridge bracket 5, and the lower two parts of the staple cartridge 4 The two sides are respectively provided with bosses. When the bosses are placed in the first chute 6 and the sliding rail 7 is clamped into the second chute 7, the staple cartridge is affected by the driving force. The bracket 5 can slide along the long and narrow slide rail 7 under the guiding action of the slide rail 7, so as to drive the nail magazine 4 to slide in the nail seat bracket 2. Preferably, there is a certain gap between the lower edge of the staple cartridge bracket 5 and the upper edge of the middle portion of the staple seat bracket 2, so as to reduce sliding resistance.
[0051] In order to install the jaw assembly with the guide structure on the suturing device, the suturing device is provided with a connecting assembly connected to the jaw assembly. Such as Figure 5 As shown, the connecting assembly includes a front push nail plate 11 arranged in the nail cartridge bracket 5, a rear push nail plate 12 connected with the front push nail plate 11, and a nail seat bracket 2 The fixed splint 13 is connected and the connecting part locking part arranged at the connecting part of the jaw assembly and the connecting assembly. The rear end of the front nail plate 11 and the front end of the rear nail plate 12 are respectively provided with rectangular hooks, so that the front nail plate 11 and the rear nail plate 12 can be clamped and connected to each other. In order to connect the nail seat bracket 2 and the fixed splint 13, a T-shaped rib 2a is provided on the inner wall of the end of the nail seat bracket 2 (see figure 2 ). Correspondingly, a T-shaped slot is provided at the front end of the fixed splint 13, and the T-shaped rib 2a is clamped in the T-shaped slot, so that the abutment base bracket 2 and the fixed splint 13 Clamp each other and connect.
[0052] In order to further fix the connecting portion and prevent the connecting components of the connecting portion from moving upward during use, a connecting portion locking member is provided on the connecting portion. Such as Figure 7 As shown, the connecting portion locking member includes a locking cover 14 and a locking pin 15 provided in the locking cover 14. The locking cover 14 is provided with a rectangular groove with an opening facing downward and open at both ends. Lateral grooves 14a and longitudinal grooves 14b are respectively provided on the side inner walls (see Picture 8 ). The two ends of the locking pin 15 are diamond-shaped, and there is a transitional contraction neck between the two diamonds, and the locking pin 15 is slidably mounted in the longitudinal groove 14b. In addition, a lateral rib 2b is provided on the outer wall of the tail end of the nail seat bracket 2, and a gap 2c is formed on the lateral rib. The purpose of this arrangement is to place the transverse ribs 2b in the transverse grooves 14a of the locking cover 14 during installation, and slide the locking pins 15 down into the notches 2c of the transverse ribs 2b. , So that the connection part is in a locked state. In addition, a transverse rib is also provided on the outside of the fixing splint 13, the width of which is the same as the width of the transverse rib 2b of the stud support bracket 2, so that the locking cover 14 can be installed along the transverse rib first. Sliding and further sliding along the transverse ribs 2b of the nail seat bracket 2 to an appropriate position (the position of the locking pin 15 corresponding to the notch 2c), so as to achieve the purpose of fixing the connecting component of the connecting part. In other words, when the connecting portion is in the locked state, the transverse ribs 2b on the abutment base bracket and the transverse ribs on the fixing splint 13 are both limited in the transverse groove 14a of the locking cover 14.
[0053] By adopting the above-mentioned connection assembly and assembly method, the jaw assembly can be installed on the stapler. In other words, for the convenience of doctors, the jaw assembly installed on the stapler of the present invention can be replaced and replaced. When there are multiple surgical incisions of different lengths during the operation, the doctor can choose to replace the jaw components of different lengths according to the needs to suture the surgical incisions of different lengths without having to replace the entire stapler, which can greatly save the production cost of the stapler And the cost of surgery.
[0054] In the present invention, the jaw drive assembly includes a staple cartridge support pushing member 16 and a connecting rod assembly. The staple cartridge support pushing member 16 is provided on the innermost rear nail plate 12 and the outermost fixed splint 13 between. Such as Image 6 As shown, the handle assembly includes a fixed handle 17 and a movable handle 18. The movable handle 18 can pivot toward or away from the fixed handle 17, and the movable handle 18 is linked with a connecting rod 19a of the connecting rod assembly. , The other connecting rod 19b of the connecting rod assembly is linked with the staple cartridge support pushing member 16, so as to cause the staple cartridge support pushing member 16 to move linearly and drive the nails through the pivoting of the movable handle 18 The bin bracket 5 moves toward the nail seat 3.
[0055] In order to facilitate the movement of the front nail plate 11 from the open state to the closed state with the nail cartridge bracket 5, preferably, as Figure 5 As shown, the staple cartridge bracket 5 is provided with a pin 5a, the front push nail plate 11 is provided with a pin hole 11a, and the pin 5a is fixed on the staple cartridge bracket 5 through the pin hole 11a. With this arrangement, when the staple cartridge holder 5 moves toward the staple holder 3, the staple cartridge holder 5 drives the front nail plate 11 through the pins 5a, so that the front staple plate 11 moves with the staple holder bracket 5.
[0056] In order to enable the forward push nail plate 11 to continue to move forward relative to the staple cartridge 5 during the firing operation, such as Figure 5 As shown, further, a recess 12a is provided at the rear of the rear nail plate 12, and a firing link 20 is provided on the movable handle 18, and the firing link 20 can push the nail sheet 12 behind. When moved to a proper position (closed state), it engages with the recessed portion 12a of the back nail piece 12. Specifically, the firing link 20 is always maintained in a state of being pressed upwards against the lower edge of the nail piece 12 through a biasing member (such as a spring). One end of the firing link 20 is connected to the movable handle 18, and the other One end can be engaged with the concave portion 11a under the action of a biasing force in the closed state to push the rear nail plate 12 to push the front nail plate 11 to move forward. Therefore, when the jaw assembly is in the closed state, the firing link 20 will push the rear nail plate 12 to push the front nail plate 11 to continue to move. At this time, the staple cartridge support pusher 16 will no longer move, and the staple cartridge support 5 will not move either. Then move, so that the front push nail plate 11 can continue to move relative to the nail magazine bracket 5 to push the push piece 10 provided in the nail magazine 4, thereby firing the staples. The pin 5a is located at the front end of the pin hole 11a when the jaw assembly is in the open state and the closed state, and is located at the rear end of the pin hole 11a after firing, so that the front nail plate 11 is fired. After that, you can no longer move forward.
[0057] Preferably, in order to facilitate guidance, at least two guide pins 13a are provided on the fixed splint 13, and the rear push nail plate 12 and the staple cartridge support pusher 16 are respectively provided with guide holes respectively. The pins 13a pass through the guide holes and are fixed on the fixing clamp plate 13. When the rear nail plate 12 and the staple cartridge support pusher 16 move, under the cooperation of the guide pin 13a and the guide hole, the rear push nail plate 12 and the staple cartridge support pusher 16 move. Move back and forth without swinging up and down.
[0058] Preferably, in order to be able to adjust the position of the tissue to be sutured as required before the firing operation, the cutting and stapling device of the present invention can be reset to the initial state (ie, the open state) through the reset structure. For example, the cutting suturing device further includes a resetting assembly, which includes a resetting button 21 and a resetting tension spring 22 linked with the resetting button 21. One end of the resetting tensioning spring 22 is fixed (fixed in the cutting suturing device which is relatively immovable). On the component, for example, it is fixed to the rear end of the fixed splint 13), and the other end is connected to the rear push nail plate 12. When the jaw assembly is closed, the two connecting rods 19a and 19b of the connecting rod assembly are pushed to a horizontal position and are in a locked state. At this time, to open the jaws, you need to press the reset button 21 to unlock the connecting rod assembly At the same time, resetting the restoring force of the tension spring 22 will drive the rear nail plate 12 to drive the front nail plate 11 to retreat, so that the nail magazine bracket 5 can be driven to retreat through the pin 5a on the nail magazine bracket 5, which is set in the nail magazine bracket The staple cartridge 4 on 5 moves away from the staple seat 3.
[0059] Similarly, the cutting and stapling device of the present invention can be returned to the open state in the above-mentioned manner to exit the cutting and stapling device of the present invention.
[0060] In order to realize tissue separation after the firing of the staples is completed, the stapler provided by the present invention is also provided with a cutting device. The cutting device includes a cutting knife 23 arranged at the lower part of the front end of the abutting base bracket 2, a cutting knife seat 24 arranged at the tail end of the cutting knife 23, a cutting knife pull cord 25 connected with the cutting knife seat, and a cutting knife. Knife return spring 26.
[0061] Such as Figure 5 As shown, the cutting edge of the cutting knife 23 is upward and perpendicular to the length of the suture. Under the pulling of the cutting knife pull cord 25, the cutting knife 23 can move from bottom to top to cut the tissue, and After cutting the tissue, it can return to the initial position (the lower part of the front end of the nail seat bracket) under the action of the cutter return spring 26.
[0062] Specifically, one end of the cutter pull cord 25 is connected to the upper part of the cutter seat 24, and the other end is connected to a pull rod 28 with a handle 29 at the end through a connecting piece 27. One end of the connecting member 27 is fixedly connected with the cutter pull cord 25, and the other end is movably connected with the pull rod 28 (for example, by means of a slot). A plurality of pulleys 30 in contact with the pull cord of the cutter are provided in the nail holder bracket 2, and the central part of the nail holder 3 and the staple cartridge 4 are both provided with a knife groove for the passage of the cutter 23 , By pulling the handle 29 to move the cutter pull cord 25 on the pulley 30, thereby pulling the cutter 23 from the initial position (the lower part of the front end of the nail seat bracket 2) to move upward along the knife groove The top of the front end of the abutment base bracket 2 realizes tissue separation.
[0063] In order to return the cutter 23 to the initial position (the lower part of the front end of the nail seat bracket 2) after the tissue is broken, a cutter return spring 26 is provided in the nail seat bracket 5. The cutter return spring 26 is a A clockwork spring made of heat-treated high-carbon steel spring steel strip. One end of the cutter return spring 26 is fixed, and the other end is connected to the lower part of the cutter seat 24. When the cutter 23 is located at the lower part of the front end of the nail seat bracket 2, the cutter return spring 26 is in a natural curl state, and when the cutter 23 finishes cutting and is at the top of the front end of the nail seat bracket 2 When the cutter return spring 25 is in a stretched state, when the handle 29 is released, the cutter 23 will quickly return to the initial position under the action of the return tension of the cutter return spring 25.
[0064] Preferably, as figure 1 As shown in the A-A view, at least two convex posts 24a are provided on the left and right sides of the cutter seat 24, and, as figure 1 As shown in the BB view, the inner wall on both sides of the front end of the nail abutment bracket 2 is provided with cutter seat stroke grooves 31, so that when the cutter 23 moves from bottom to top, the convex post 24a is It is defined in the cutter seat stroke groove 31 and slides in the cutter seat stroke groove 31 so that the cutter 23 moves smoothly and prevents deflection.
[0065] Through the cutting device provided by the present invention, the doctor can easily realize tissue separation from bottom to top, even if the tissue to be separated is thick, the cutting operation can be easily realized, and after the cutting is completed, the cutting knife is reset Under the action of the spring 25, the cutter 23 can automatically return to the initial position.
[0066] In summary, the stapler provided by the present invention can effectively prevent the staple cartridge from deflecting during the closing of the jaw assembly, and facilitate complete tissue separation. At the same time, the stapler provided by the present invention can be based on actual conditions. It is necessary to disassemble and replace suitable jaw components to meet the needs of different types of staplers for the same operation, thereby saving costs.
[0067] It should be noted that the various specific technical features described in the foregoing specific embodiments can be combined in any suitable manner, and they also fall within the scope of the disclosure. In addition, various different embodiments of the present invention can also be combined arbitrarily, as long as they do not violate the idea of the present invention, they should also be regarded as the content disclosed in the present invention.
[0068] The preferred embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details in the above-mentioned embodiments. Within the scope of the technical concept of the present invention, many simple modifications can be made to the technical solutions of the present invention. These simple modifications all belong to the protection scope of the present invention.
