Cutting anastomat assembly under large-angle endoscope and anastomat

Abstract

The invention discloses a large-angle endoscopic cutting anastomat assembly, and relates to the technical field of medical instruments, the large-angle endoscopic cutting anastomat assembly comprises a jaw part (1), an anastomat connecting part (5) and a jaw closing driving part (6), an anastomat main body drives the jaw closing driving part (6) to control the closing action of the jaw part (1) by controlling the anastomat connecting part (5), and the jaw closing driving part (6) is driven by the anastomat main body to control the closing action of the jaw part (1). The anastomat is characterized by further comprising a bending main body, one end of the bending main body is connected with the anastomat main body, the other end of the bending main body is connected with the jaw component (1), and the anastomat main body drives the bending main body to achieve bending action so as to drive the jaw component (1) to flexibly adjust the bending angle. According to the scheme, the reversing gear conducts left-right bending force, large-angle bending is achieved through a multi-joint structure, and the technical problems that due to multiple joints, the bending freedom degree is high, and the zero position is not easy to lock are solved by means of the spring design.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a large-angle laparoscopic cutting and anastomosis device assembly and anastomosis device. Background Technology

[0002] Currently, minimally invasive surgery occupies an important position in surgical procedures. Laparoscopic staplers play an increasingly crucial role in these procedures. Due to variations in the thickness and length of the anastomotic tissue at different surgical sites, corresponding component models must be selected. In this context, a quick, safe, and reliable assembly connection between the stapler and its components can reduce waiting time for instruments, effectively shortening surgical time and improving the success rate. Furthermore, different lesion locations require different components; therefore, the compatibility of stable, large-angle components will allow for minimally invasive surgeries in more complex environments. Current technologies use a stapler cartridge holder connected to a double-layered curved pull tab and a stapler holder fixing block via pins. The component and stapler are connected via a steering linkage to the stapler's steering knob. Rotating the stapler's steering knob pushes forward or pulls backward, driving the stapler cartridge holder to rotate infinitely left and right. However, this design suffers from several drawbacks: the stapler cartridge holder and the curved pull tab are fixed to the stapler cartridge holder by pins, making it difficult to align the multiple connecting pin holes, resulting in significant lateral steering forces and unclear component zero-position.

[0003] There is an urgent need in the market for a stapler assembly with a large bending angle, high precision, and strong stability to reduce the risk of surgical malfunctions.

[0004] Therefore, how to solve the technical problems of large left and right steering forces and unclear component zero position in the existing technology is an urgent technical challenge that needs to be addressed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to solve the technical problems of large left and right steering forces and unclear component zero position in the prior art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A large-angle laparoscopic cutting stapler assembly includes a jaw component (1), a stapler connecting component (5), and a jaw closing drive component (6). The stapler body controls the jaw closing drive component (6) to control the closing of the jaw component (1) by controlling the stapler connecting component (5). The assembly also includes a bending body, one end of which is connected to the stapler body and the other end of which is connected to the jaw component (1). The stapler body drives the bending body to perform a bending action, thereby adjusting the bending angle of the jaw component (1).

[0008] Furthermore, the bending body includes a bending structure (2) and a bending drive component (3); the jaw component (1) is connected to the bending drive component (3) through the bending structure (2).

[0009] Furthermore, the bending structure (2) includes a staple cartridge positioning block (201), a steering connecting block (202), and an inner core positioning block (203). The staple cartridge positioning block (201), the steering connecting block (202), and the inner core positioning block (203) are connected in sequence to form a three-joint linkage structure.

[0010] Furthermore, the bending structure (2) also includes a reset spring (204), the steering connecting block (202) is provided with a through hole (202c), one end of the nail cartridge positioning block (201) is provided with a first fixing boss (201c), one end of the inner core positioning block (203) is provided with a second fixing boss (203c), the reset spring (204) passes through the through hole (202c), and both ends are fixed to the first fixing boss (201c) and the second fixing boss (203c) respectively.

[0011] Furthermore, the bending drive component (3) includes a drive gear (301), a steering pull plate (302), a gear positioning pin (303), and a steering tie rod (304); the stud cartridge seat positioning block (201) is connected to the steering pull plate (302) by a connecting pin (103); the drive gear (301) meshes with the tooth hole of the steering pull plate (302), and the steering pull plate (302) is connected to the steering tie rod (304).

[0012] Furthermore, there are two steering pull tabs (302), which are symmetrically arranged on both sides of the drive gear (301) and mesh with the drive gear (301) to form a linkage structure.

[0013] Furthermore, one end (304b) of the steering tie rod (304) is connected to the anastomosis device steering linkage. The anastomosis device steering linkage drives the steering tie rod (304) to move axially, thereby driving the steering pull plate (302) on the same side to move. The steering pull plate (302) on the other side achieves reverse movement through the drive gear (301).

[0014] Furthermore, the cutting and anastomosis device assembly also includes a support member (4) for accommodating the bending structure (2), the bending drive member (3), and the cutting blade member (7).

[0015] An anastomosis device comprising a large-angle laparoscopic cutting anastomosis device assembly as described in any of the above.

[0016] With this design, the present invention has at least the following advantages:

[0017] (1) The proposed solution adopts a three-joint linkage structure, combined with a reversing gear transmission, to achieve large-angle bending and adapt to the needs of complex surgical lesion locations; the reset spring design effectively solves the problem of zero-position locking caused by the high degree of freedom of multiple joints, and the zero position is clear and stable, improving the accuracy of surgery.

[0018] (2) The steering pull tabs of this application are symmetrically arranged and mesh with the drive gear, so that the steering force is uniform, the operation is comfortable, and the operation intensity of medical staff is reduced.

[0019] (3) The support components of this application form a closed and stable installation space, ensuring that each component operates without deviation, and improving the overall stability and service life of the components.

[0020] (4) The present invention has a simple structure, good effect, low cost and easy process implementation. Attached Figure Description

[0021] The above is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Figure 1 This is a schematic diagram of the right-hand bend angle of a component according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the left-turn angle of a component according to an embodiment of the present invention;

[0024] Figure 3 This is an overall structural diagram of a component according to an embodiment of the present invention;

[0025] Figure 4 This is an overall structural diagram of a component according to an embodiment of the present invention;

[0026] Figure 5 This is a bending structure diagram of an embodiment of the present invention;

[0027] Figure 6 This is a bending and driving configuration diagram according to an embodiment of the present invention;

[0028] Figure 7 This is a structural diagram of the maximum rightward bending angle according to an embodiment of the present invention;

[0029] Figure 8 This is a structural diagram of the maximum leftward bending angle according to an embodiment of the present invention;

[0030] Figure 9 This is a zero-position structure diagram of an embodiment of the present invention;

[0031] Figure 10This is a structural diagram of a cutting blade component according to an embodiment of the present invention;

[0032] Figure 11 This is a schematic diagram of the anastomosis device assembly according to an embodiment of the present invention;

[0033] Figure label,

[0034] 1-Jaw assembly; 2-Bending structure; 3-Bending drive assembly; 4-Support assembly; 5-Anastomosis device connecting assembly; 6-Jaw closing drive assembly; 7-Cut blade assembly;

[0035] 101-Pin cartridge holder, 102-Anchor pin holder, 103-Connecting pin;

[0036] 201-Pin cartridge seat positioning block, 202-Steering connecting block, 203-Inner core positioning block, 204-Reset tension spring;

[0037] 201a - First positioning hole, 201b - First connecting boss, 201c - First fixing boss, 202a - Second positioning hole, 202b - First flat hole, 202c - Channel, 203a - Second connecting boss, 203b - Second flat hole, 203c - Second fixing boss;

[0038] 301-Drive gear, 302-Steering pull plate, 303-Gear locating pin, 304-Steering tie rod;

[0039] 302a - Third positioning hole, 302b - Toothed hole, 302c - Square hole, 304a - One end of steering tie rod, 304b - The other end of steering tie rod;

[0040] 401 - Inner core lower shell, 402 - Inner core upper shell, 403 - Inner core fuse;

[0041] 501 - Outer Tube;

[0042] 601 - Propulsion ring, 602 - Connecting piece;

[0043] 701-Cut Blade; Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] In this article, terms such as "upper" and "lower" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.

[0046] In the following description, the end of each component closer to the operator is defined as the proximal end, and the end farther from the operator is defined as the distal end. These proximal and distal designations are for simplicity and clarity only and should not be construed as limiting the scope of the invention.

[0047] An embodiment of the large-angle laparoscopic cutting and stapler assembly of this application includes a jaw component 1, a stapler connecting component (5), and a jaw closing drive component 6. One end of the stapler connecting component (5) is connected to the stapler body, and the other end of the stapler connecting component (5) is connected to the jaw closing drive component (6). The stapler body controls the jaw closing drive component (6) to control the closing of the jaw component (1) by controlling the stapler connecting component (5). The cutting and stapler assembly also includes a bending body. One end of the bending body is connected to the stapler body, and the other end of the bending body is connected to the jaw component 1. The stapler body drives the bending body to achieve bending action, thereby driving the jaw component 1 to adjust the bending angle to adapt to the surgical requirements.

[0048] Here, the jaw component 1 includes a staple cartridge seat 101 and a staple anchor seat 102. One end of the staple cartridge seat 101 and the staple anchor seat 102 are movably connected, and the other end of the staple cartridge seat 101 and the staple anchor seat 102 performs an opening and closing action.

[0049] The stapler assembly is equipped with a cutting blade component (7), which cuts tissue by driving the stapler body.

[0050] Furthermore, the bending body includes a bending structure 2 and a bending drive component 3; the jaw component 1 is connected to the bending structure 2 and the bending drive component 3.

[0051] The bending structure 2 here is a multi-joint linkage structure, including a staple cartridge seat positioning block 201, a steering connecting block 202, and an inner core positioning block 203; the staple cartridge seat positioning block 201, the steering connecting block 202, and the inner core positioning block 203 are connected in sequence to form a three-joint linkage structure.

[0052] Specifically, the staple cartridge positioning block 201 and the inner core positioning block 203 are movably connected through the steering connecting block 202. The steering connecting block 202 has a second positioning hole 202a at both ends. The staple cartridge positioning block 201 has a first connecting boss 201b at one end, and the inner core positioning block 203 has a second connecting boss 203a at one end. The first connecting boss 201b is connected to one second positioning hole 202a, and the other second positioning hole 202a is connected to the second connecting boss 203a, forming a three-joint linkage structure, which provides sufficient freedom for large-angle bending.

[0053] The bending structure 2 also includes a reset spring 204. The surface of the steering connecting block 202 is provided with a channel 202c. One end of the nail cartridge positioning block 201 is provided with a first fixed boss 201c, and one end of the inner core positioning block 203 is provided with a second fixed boss 203c. The reset spring 204 passes through the channel 202c, and both ends of the reset spring 204 are fixed to the first fixed boss 201c and the second fixed boss 203c respectively.

[0054] Here, a total of 4 reset tension springs 204 are provided. Correspondingly, the upper and lower surfaces of the steering connecting block 202 are respectively provided with 2 channels 202c, the upper and lower surfaces of the staple cartridge positioning block 201 are respectively provided with 2 first fixing bosses 201c, and the upper and lower surfaces of the inner core positioning block 203 are respectively provided with 2 second fixing bosses 203c. This ensures that the jaw component 1 is stably locked in the initial position when the stapler assembly is in the free state and the stapler is in the zero position. Here, the zero position is a technical term commonly used in the field, which refers to the upright state of the stapler assembly.

[0055] The staple cartridge seat 101 of the jaw component 1 is fixedly connected to the staple cartridge seat positioning block 201 and the steering pull plate 302 via connecting pins 103; the staple cartridge seat positioning block 201, the steering connecting block 202, and the inner core positioning block 203 are sequentially engaged with the positioning holes through bosses to form a three-joint linkage bending structure 2; the reset spring 204 passes through the channel 202c of the steering connecting block 202, and its two ends are fixed to the first fixed boss 201c and the second fixed boss 203c respectively. A total of 4 reset springs 204 are provided, which correspond to the mounting positions on the upper and lower surfaces of the steering connecting block 202, the staple cartridge seat positioning block 201, and the inner core positioning block 203 respectively, to ensure stable zero-position locking.

[0056] Furthermore, the turning drive component 3 includes a drive gear 301, a steering pull plate 302, and a steering tie rod 304; here there are two steering pull plates 302, and the steering connecting block 202 is provided with first flat holes 202b on both sides, and the inner core positioning block 203 is provided with second flat holes 203b on both sides. The two steering pull plates 302 pass through the first flat holes 202b on both sides of the steering connecting block and the second flat holes 203b on both sides of the inner core positioning block respectively, to ensure that the power transmission is without deviation.

[0057] Here, the staple cartridge positioning block 201 is provided with a first positioning hole 201a, and one end of the steering pull plate 302 is provided with a third positioning hole 302a. The connecting pin 103 passes through the first positioning hole 201a and the third positioning hole 302a to connect the steering pull plate 302 and the staple cartridge positioning block 201. One end of the steering pull plate 302 is provided with a square hole 302c, and one end 304a of the steering rod is inserted into the square hole 302c to connect the steering pull plate 302 and the steering rod 304. The other end 304b of the steering rod 304 is connected to the steering linkage of the stapler to realize the transmission of operation commands.

[0058] It should be noted that one end of the staple cartridge seat 101 is provided with a through hole. When the connecting pin 103 passes through the first positioning hole 201a and the third positioning hole 302a, it also passes through the through hole of the staple cartridge seat 101, so that the staple cartridge seat 101, the staple cartridge seat positioning block and the steering pull plate 302 are connected, thereby realizing the transmission of bending power to the jaw component 1.

[0059] Furthermore, the cutting anastomosis device assembly also includes a support component 4, which includes a lower inner core shell 401 and an upper inner core shell 402; the drive gear 301 of the bending drive component 3 is fixed to the lower inner core shell 401 of the support component 4 by a gear positioning pin 303, forming a fixed rotation center; the inner core positioning block 203 is embedded and fixed to the lower inner core shell 401 of the support component 4, and the outer teeth of the drive gear 301 mesh with the tooth holes 302b of the two side steering pull tabs, forming a symmetrical linkage structure;

[0060] In this invention, the drive gear 301 of the bending drive component 3 is fixed to the inner core lower shell 401 of the support component 4 by the gear positioning pin 303, forming a fixed rotation center; the two steering pull plates 302 pass through the first flat hole 202b of the steering connecting block 202 and the second flat hole 203b of the inner core positioning block 203, respectively, and their tooth holes 302b mesh with the drive gear 301. The steering pull plates 302 are engaged with the steering tie rod 304 through the square hole 302c; the other end 304b of the steering tie rod 304 is connected to the steering linkage of the anastomosis device to realize the transmission of operation commands.

[0061] The stapler connection component 5 includes an outer sleeve 501. The cutting stapler assembly is assembled to the stapler main unit through the outer sleeve 501 to form an integrated operating unit.

[0062] The jaw closing drive component 6 includes a push ring 601 and a connecting piece 602; the push ring 601 passes through the tail of the staple cartridge seat 101 and is connected to the anvil seat 102, and the jaw opening and closing is controlled by the axial movement of the push ring 601; the connecting piece 602 fixes the push ring 601 to the outer sleeve 501 of the stapler connection component 5 to realize power transmission;

[0063] The head of the cutting blade 701 is embedded in the nail cartridge seat 101 of the jaw assembly. The middle part of the cutting blade assembly 7 is engaged in the central groove of the bending structure 2 to achieve guidance and positioning during the cutting process. The push ring 601 and the outer sleeve 501 are sequentially inserted and connected by the connecting piece 602. The connecting pin 103 passes through the nail cartridge seat 101, the steering pull piece 302, and the nail cartridge seat positioning block 201 in sequence. The front end of the cutting blade assembly 7 is engaged in the nail cartridge seat 101, and the middle part is guided by the central groove of the bending structure 2. When the jaws close, the jaws close along with the closing action of the nail cartridge seat 101 and the nail abutment seat 102.

[0064] After the bending and driving components are fixed to the lower inner core shell 401, the cutting blade is placed in the central groove of the bending structure, and the upper inner core shell 402 is fastened to the inner core safety 403 to form a closed and stable support structure.

[0065] The main body of the stapler controls the stapler connecting component 5, which drives the push ring 601 to move axially through the connecting piece 602, thereby controlling the opening and closing of the staple cartridge seat 101 and the anvil seat 102 to complete the jaw closing action.

[0066] The stapler assembly is mounted onto the stapler via the outer sleeve 501 and is connected to the stapler steering linkage via the steering tie rod 304b, thereby enabling the left and right rotation of the stapler's steering knob to push and pull the steering tie rod 304b forward and backward.

[0067] Turn the stapler steering knob to the right, and pull the steering lever 304 backward through the stapler steering linkage. The steering lever 304 drives the steering pull plate 302 on the same side to move backward at the same time. The steering pull plate 302 drives the drive gear 301 to rotate clockwise through the tooth hole 302b. The rotation of the drive gear 301 will drive the opposite steering pull plate 302 to move forward through the tooth hole 302b of the steering pull plate. The forces of the two pull plates form a resultant force, which drives the staple cartridge positioning block 201 and the jaw component 1 to bend to the right.

[0068] The forward thrust of the left steering pull plate 302 and the backward pull of the right steering pull plate 302 combine to drive the staple cartridge seat positioning block 201 and the jaw component 1 to bend to the right as a whole. Since the steering pull plates 302 on both sides are linked through the drive gear 301, the steering force is uniform and the feel is comfortable.

[0069] Similarly, when turning left, turn the anastomosis device steering knob to the left, which pushes the steering lever 304 forward through the anastomosis device steering linkage. The steering lever 304 drives the steering pull plate 302 on the same side to move forward at the same time. The tooth hole 302b of the steering pull plate meshes with the drive gear 301, thereby driving the drive gear 301 to rotate counterclockwise. Through the meshing action, the drive gear 301 drives the steering pull plate 302 on the opposite side to move backward. The combined force drives the jaw component 1 to bend to the left.

[0070] The pull force of the left steering pull plate 302 and the push force of the right steering pull plate 302 combine to drive the staple cartridge seat positioning block 201 and the jaw component 1 to bend to the left as a whole;

[0071] Before and after surgery, during storage, simply rotate the stapler's steering knob back to zero when the jaw component is in the zero position. The large-angle bending of this component is achieved by three joint structures: the staple cartridge positioning block 201, the steering connecting block 202, and the inner core positioning block 203, which provides a high degree of freedom. This invention adds four return springs 204 to the three joints of the staple cartridge positioning block 201, the steering connecting block 202, and the inner core positioning block 203. The tension of the return springs 204 resets the bending structure 2, effectively suppressing the slight sway of the jaw component 1. The jaw component 1 is stably locked in the zero position, ensuring smooth and stable entry and exit of the component from the trocar. This ensures that the jaw component is stably locked in the zero position when the component is in its free state and when it is assembled onto the stapler and the stapler's steering knob is in the zero position, thus making the bending force of the component when entering and exiting the trocar more uniform and smoother.

[0072] In this invention, the bending drive component 3 is fixed to the lower inner core shell 401, the cutting blade component 7 is placed in the central groove of the bending structure 2, and the upper inner core shell 402 and the inner core safety 403 are fastened together; the staple cartridge seat 101, the staple cartridge seat positioning block 201, and the steering pull plate 302 are connected by the connecting pin 103; the push ring 601, the connecting piece 602 and the outer sleeve 501 are assembled and fixed; finally, the components are assembled to the stapler main unit through the outer sleeve 501 to complete the overall assembly.

[0073] One embodiment of the present invention also includes a stapler comprising any of the above-described large-angle laparoscopic cutting stapler components.

[0074] The use of the large-angle laparoscopic cutting stapler assembly and stapler described in this invention has at least the following advantages:

[0075] (1) The proposed solution adopts a three-joint linkage structure, combined with a reversing gear transmission, to achieve large-angle bending and adapt to the needs of complex surgical lesion locations; the reset spring design effectively solves the problem of zero-position locking caused by the high degree of freedom of multiple joints, and the zero position is clear and stable, improving the accuracy of surgery.

[0076] (2) The steering pull tabs of this application are symmetrically arranged and mesh with the drive gear, so that the steering force is uniform, the operation is comfortable, and the operation intensity of medical staff is reduced.

[0077] (3) The support components of this application form a closed and stable installation space, ensuring that each component operates without deviation, and improving the overall stability and service life of the components.

[0078] (4) The present invention has a simple structure, good effect, low cost and easy process implementation.

[0079] Other embodiments of the invention will readily conceive of those skilled in the art upon consideration of the invention disclosed in the specification and embodiments. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0080] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A large-angle laparoscopic cutting stapler assembly, comprising a jaw component (1), a stapler connecting component (5), and a jaw closing drive component (6), wherein the stapler body controls the jaw connection component (5) to cause the jaw closing drive component (6) to control the closing of the jaw component (1), characterized in that, It also includes a bending body, one end of which is connected to the stapler body and the other end of which is connected to the jaw component (1). The stapler body drives the bending body to perform a bending action, thereby causing the jaw component (1) to adjust the bending angle.

2. The large-angle laparoscopic cutting and anastomosis device assembly according to claim 1, characterized in that, The bending body includes a bending structure (2) and a bending drive component (3); the jaw component (1) is connected to the bending drive component (3) through the bending structure (2).

3. The large-angle laparoscopic cutting and anastomosis device assembly according to claim 2, characterized in that, The bending structure (2) includes a staple cartridge positioning block (201), a steering connecting block (202), and an inner core positioning block (203). The staple cartridge positioning block (201), the steering connecting block (202), and the inner core positioning block (203) are connected in sequence to form a three-joint linkage structure.

4. The large-angle laparoscopic cutting and anastomosis device assembly according to claim 3, characterized in that, The bending structure (2) also includes a reset spring (204). The steering connecting block (202) is provided with a through hole (202c). One end of the nail cartridge positioning block (201) is provided with a first fixing boss (201c). One end of the inner core positioning block (203) is provided with a second fixing boss (203c). The reset spring (204) passes through the through hole (202c) and its two ends are respectively fixed on the first fixing boss (201c) and the second fixing boss (203c).

5. The large-angle laparoscopic cutting and anastomosis device assembly according to claim 2, characterized in that, The bending drive component (3) includes a drive gear (301), a steering pull plate (302), a gear positioning pin (303), and a steering tie rod (304); the stud cartridge seat positioning block (201) is connected to the steering pull plate (302) by a connecting pin (103); the drive gear (301) meshes with the tooth hole of the steering pull plate (302), and the steering pull plate (302) is connected to the steering tie rod (304).

6. The large-angle laparoscopic cutting and anastomosis device assembly according to claim 5, characterized in that, There are two steering pull tabs (302), which are symmetrically arranged on both sides of the drive gear (301) and mesh with the drive gear (301) to form a linkage structure.

7. The large-angle laparoscopic cutting and anastomosis device assembly according to claim 6, characterized in that, One end (304b) of the steering tie rod (304) is connected to the steering linkage of the anastomosis device. The steering tie rod (304) is driven to move axially through the steering linkage of the anastomosis device, thereby driving the steering pull plate (302) on the same side to move. The steering pull plate (302) on the other side achieves reverse movement through the drive gear (301).

8. The large-angle laparoscopic cutting and anastomosis device assembly according to claim 1, characterized in that, The cutting and anastomosis assembly also includes a support member (4) for accommodating the bending structure (2), the bending drive member (3), and the cutting blade member (7).

9. A stapler, characterized in that, Includes the large-angle laparoscopic cutting and anastomosis device assembly as described in any one of claims 1-8.

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