Tail end assembly and unilateral suture blood vessel anastomat assembly

Abstract

The utility model discloses a tail end component and a unilateral suturing blood vessel anastomat component, the unilateral suturing blood vessel anastomat component comprises a cannula component, a steering connecting block, a steering pull rod, a percussion beam and the tail end component, the tail end component comprises a nail box base, a nail bin and a nail abutting seat, and the nail bin is provided with an asymmetric nail outlet groove. Specifically, a row of nail outlet grooves are formed in one side of the push broach groove, three rows of nail outlet grooves are formed in the other side of the push broach groove, and anti-skid bosses are arranged on the edges of outlets of the nail outlet grooves to adapt to narrow space operation and prevent tissue sliding dislocation in the anastomosis process, so that the anastomosis quality is improved. An olecranon part and an olecranon groove can be arranged at the far end of the nail abutting seat according to needs, a protrusion is arranged on the nail bin, the olecranon part is used for warping and hooking tissue, and the olecranon groove and the protrusion are used for closing the tissue, so that the universal anastomat is an all-round anastomat, can adapt to various narrow environments, is high in anastomosis quality, and is suitable for popularization and application. The damage to tissues is small.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of medical devices, relates to an anastomat technology, specifically relates to a tip subassembly and single -edge suture blood vessel anastomat subassembly. BACKGROUND

[0002] At present, in the endoscopic thoracic surgery, it is difficult to close the larger vascular wound, stop bleeding and recover, so the vascular suture is used to stop bleeding at present, and the vascular anastomat is the most commonly used medical device in the vascular suture. There are some problems in the prior art vascular anastomat, and the wound is different in different operations. When the wound is small or the wound is far away from the bleeding point, it is difficult to suture the blood vessel. For example, when suturing the broken tissue, other instruments need to be used to straighten and preliminarily position the tissue before the anastomosis of the vascular anastomat. For example, in the anastomosis process, the friction force between the surface of the nail bin and the tissue is not enough, which leads to some difficulties in assembling and anastomosis with tension. For example, the anastomosis left and right turning is limited, which limits the operation field of view and seriously affects the operation precision.

[0003] The prior art CN217488730U discloses a cutting anastomat for narrow anatomical space, which comprises a nail bin assembly, the nail bin assembly comprises a nail seat, a nail bin seat and a nail bin, the nail seat is rotationally connected with the nail bin seat, the nail bin is arranged in the nail bin seat, a push knife groove is formed in the nail bin, three rows of ejection grooves are formed in one side of the push knife groove in the nail bin, and one row of ejection grooves is formed in the other side of the push knife groove in the nail bin. Four rows of ejection grooves are formed in the nail seat. Advantage: the cutting anastomat for narrow anatomical space can retain more healthy tissues because the cutting anastomat reduces the design of two rows of anastomotic nails on the specimen side; the narrower nail seat needs less free tissue, and the operation is more convenient, fast and safe. Although the nail bin of the technology is provided with asymmetric nail bin grooves, the size of the anastomat is reduced, and the cutting anastomat is suitable for narrow anatomical space, but the nail bin does not have anti-skid measures, and the tissue is easy to dislocate due to insufficient clamping force during the anastomosis, especially for the tissue with tension, which makes it difficult to smoothly anastomose. In addition, other instruments are still needed to straighten and preliminarily position the tissue before the anastomosis of the vascular anastomat, so that the function is limited, and the clinical application still has the space for the first step of improvement.

[0004] The prior art CN216933330U discloses a staple cartridge assembly for a stapler, which comprises a body having a tissue contact surface, the tissue contact surface comprising a proximal portion, a middle portion and a distal portion distributed along the length direction thereof, and the middle portion and / or the proximal portion of the tissue contact surface is provided with at least one boss. The present embodiment sets the boss on the tissue contact surface of the staple cartridge assembly, and sets the position, number and height of the boss, so that a larger friction force is formed between the human tissue and the staple cartridge assembly during the anastomosis operation, so that the human tissue is well fixed and cannot slip to the distal portion of the staple cartridge assembly or to the two sides, thereby improving the accuracy of the anastomosis operation and improving the forming effect of the anastomosis staple. This technology solves the problem of slip between the staple cartridge and the tissue due to too small friction force during the anastomosis process, but cannot be operated in a narrow space, does not have a hook pulling mechanism, and cannot lock the tissue, so there is still room for improvement.

[0005] The prior art CN117582258A discloses a terminal execution assembly, an initial position retaining member and a surgical instrument adapted to the surgical instrument, and belongs to the field of medical instruments. The terminal execution assembly of the surgical instrument comprises: a proximal body portion defining a longitudinal axis; a distal execution portion for manipulating tissue, which is pivotally connected to the proximal body portion through a joint assembly, and the joint assembly is provided with a pivot shaft; the proximal body portion comprises a bending transmission member, the joint assembly is provided with a bending drive shaft, and the bending transmission member acts on the bending drive shaft to provide a bending drive force to the joint assembly, so that the distal execution portion bends relative to the longitudinal axis of the proximal body portion; when the terminal execution assembly is in a waiting loading position, the distal execution portion forms an included angle of not 0° with respect to the longitudinal axis. The distal execution portion of the surgical instrument of the present application can realize large-angle bending. Although this technology improves the turning angle of the terminal execution assembly through certain technical means, and obtains a larger operation field of view, it does not set anti-slip measures on the staple cartridge, and does not solve the problem of cutting and anastomosis in a narrow dissection space.

[0006] In summary, the existing anastomosis devices in the prior art can only solve one technical problem, and there are more or less some defects, and there is no all-purpose anastomosis device, so it is necessary to carry out related research and development to obtain an anastomosis device with comprehensive performance. Practical new type content

[0007] One of the purposes of the present utility model is to provide a terminal assembly of an anastomosis device, so as to solve the problem of single function of the terminal assembly of the anastomosis device in the prior art and limited use scene.

[0008] The utility model discloses another purpose is to provide a single edge suture blood vessel anastomat assembly, will above end assembly carry, through setting up with the limiting arc surface steering connecting block, to improve the maximum steering angle of end assembly, to the greater operation visual field of activity.

[0009] In order to solve above-mentioned technical problem, the utility model adopts technical scheme as follows:

[0010] An end assembly of an anastomat, comprising:

[0011] The nail magazine base has a cavity structure with a single opening, and the two ends of the nail magazine base are a proximal end and a distal end, respectively.

[0012] The nail cartridge is installed in the cavity of the nail magazine base, and the nail cartridge has a first working surface protruding from the opening of the nail magazine base; and

[0013] The distal end of the anvil seat is rotatably connected to the proximal end of the nail magazine base, so that the distal end of the anvil seat and the nail magazine base can be opened and closed.

[0014] Among them, the first working surface of the nail cartridge is provided with a push knife groove extending from the proximal end to the distal end, the first working surface on one side of the push knife groove is provided with a row of ejection grooves, the other side is provided with at least two ejection grooves, the anvil seat is provided with an anvil groove matched with the position and size of each ejection groove, and the outlet edges of each ejection groove are respectively provided with anti-skid bosses protruding from the first working surface.

[0015] Further, the ejection grooves on the other side of the push knife groove are provided with 3 rows, and each row of ejection grooves is staggered.

[0016] Further, the distal end of the anvil seat is provided with a beak portion extending downwardly and obliquely towards the first working surface.

[0017] Further, the beak portion is of a pointed end type, and the inclination angle is 10-30 degrees.

[0018] Further, the distal end of the first working surface of the nail cartridge is provided with a raised protrusion, the lower side of the beak portion is provided with a beak groove matched with the protrusion, and when the anvil seat is closed relative to the nail magazine base, the protrusion and the beak groove form a locking structure for the tissue.

[0019] Further, the protrusion at the distal end of the nail cartridge is a smooth protrusion.

[0020] Further, the nail cartridge is detachably installed in the cavity of the nail magazine base through a clamping structure.

[0021] Further, the anti-skid bosses are provided with different heights, and the closer to the push knife groove, the higher the height of the anti-skid bosses.

[0022] In another aspect, the utility model provides a kind of single edge suture blood vessel anastomat assembly, including sleeve assembly, steering connecting block, steering pull rod, firing beam and the end component described above, the end component is installed in the distal end of sleeve assembly by steering connecting block, steering pull rod is connected with steering connecting block, and the steering of end component is realized by pulling steering connecting block, the firing beam is connected with push block, the steering connecting block is by upper connecting block, lower connecting block is detachably connected and is formed, upper connecting block, lower connecting block are equipped with the limiting camber surface of contact portion of firing beam on.

[0023] Further, the sleeve assembly includes an inner tube and an outer sleeve disposed on the inner tube, the distal end of the inner sleeve is provided with a rotating support piece, the proximal end of the staple cartridge base and the anvil seat is installed on the lower connecting block through a first rotating shaft, the upper connecting block and the lower connecting block are installed on the rotating support piece through a second rotating shaft, the opening and closing of the staple cartridge base and the anvil seat is realized through the first rotating shaft, and the turning of the end component is realized through the second rotating shaft.

[0024] Compared with the prior art, the utility model has the following beneficial effects:

[0025] The utility model combines anti-skid boss and asymmetric staple slot, solves the problem of insufficient closing force of the first working surface at the single-row staple slot when the jaw is closed, reduces the number of rows of the end component, and still can well close and clamp the tissue, so that the anastomosis staple can be smoothly fired, and the tissue can be anastomosed.

[0026] The height of the anti-skid boss is designed to be different, and the height away from the push knife slot is lower, so as to adapt to the actual situation that the place close to the push knife slot bears stronger force when the jaw is closed, balance the left and right forces when the jaw is closed, and prevent the anastomosis staple from not being formed.

[0027] The utility model increases the upwardly curved boss at the distal end of the staple cartridge, which is matched with the beak groove, and can hook and lift the tissue, reduce the replacement of other instruments, and lock after closing.

[0028] The utility model sets the limiting camber surface on the upper and lower connecting blocks, reduces the angle limitation, can rotate the component at a larger angle, and can better meet the surgical requirements at different angles.

[0029] In summary, the utility model reduces the number of anastomosis staples by 2 rows, so that the anvil seat and the staple cartridge are relatively small and easy to position when treating blood vessels, the friction force is increased by the anti-skid boss to prevent tissue misplacement, the beak top of the staple cartridge is designed to hook and lift the tissue, the field of view of the endoscope is increased by setting the limiting camber surface, the anastomosis staple can be cut and anastomosed through narrow tissue after a large rotation, the replacement of instruments is reduced, the damage to the tissue at the narrow part by large instruments is reduced, and the operation is safer and more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is the end assembly schematic view in the embodiment 1 of the utility model.

[0031] Figure 2 It is the exploded view of end assembly in the embodiment 1 of the utility model.

[0032] Figure 3 It is the side view when the jaw of end assembly in the embodiment 1 of the utility model is closed.

[0033] Figure 4 It is the top view of nail bin in the embodiment 1 of the utility model.

[0034] Figure 5 It is the assembly schematic view of one-side suture blood vessel anastomat in the embodiment 2 of the utility model.

[0035] Figure 6 It is the left turn schematic view of end assembly of one-side suture blood vessel anastomat assembly in the embodiment 2 of the utility model.

[0036] Figure 7 It is the right turn schematic view of end assembly of one-side suture blood vessel anastomat assembly in the embodiment 2 of the utility model.

[0037] 100-end assembly, 110-nail magazine base, 111-clamping groove;

[0038] 120-nail bin, 121-first working surface, 122-knife slot, 123-nail outlet slot, 124-anti-skid boss, 125-protrusion, 126-buckle;

[0039] 130-resist nail seat, 131-resist nail slot, 132-eagle beak part, 133-eagle beak groove;

[0040] 200-sleeve assembly, 210-inner tube, 211-rotary support sheet, 220-outer sleeve;

[0041] 300-turning connecting block, 310-upper connecting block, 320-lower connecting block, 321-limiting arc surface, 330-first rotation shaft, 340-second rotation shaft, 350-pivot;

[0042] 400-turning pull rod, 500-firing beam. DETAILED DESCRIPTION

[0043] The embodiment of the utility model is further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but cannot be used to limit the scope of the utility model.

[0044] In the description of the utility model, it needs to explain, the term "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "internal", "external" and so on the orientation or positional relationship indicated based on the orientation or positional relationship shown in the drawing, just for the convenience of describing the utility model and simplifying the description, and it is not indicated or implied that the device or element must have a particular orientation, a particular orientation and operation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0045] In the description of the utility model, it needs to explain, unless otherwise specified and limited, the term "connected", "connection" should be broad, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. It needs to be explained that in the following description, in order to facilitate the description of relative position, taking the actual operation of the anastomat as an example, the end away from the operator is defined as the distal end, and the end close to the operator is defined as the proximal end.

[0046] Embodiment 1: as shown in the embodiment, the distal end assembly 100 of the anastomat comprises: Figures 1 to 4

[0047] The nail box base 110 has a single-sided opening cavity structure, and the two ends of the nail box base 110 are the proximal end and the distal end respectively;

[0048] The nail cartridge 120 is installed in the cavity of the nail box base 110, and the nail cartridge 120 has a first working surface 121 protruding from the opening of the nail box base 110; and

[0049] The nail cartridge 120 is installed in the cavity of the nail box base 110, and the nail cartridge 120 has a first working surface 121 protruding from the opening of the nail box base 110; and

[0050] Wherein, the first working surface 121 of the nail cartridge 120 is provided with a push knife groove 122 extending from the proximal end to the distal end, a discharge nail groove 123 is arranged on one side of the first working surface 121 of the push knife groove 122, and at least two discharge nail grooves 123 are arranged on the other side, the nail cartridge 130 is provided with a nail cartridge 131 matched with the position and size of each discharge nail groove 123, and the outlet edges of each discharge nail groove 123 are respectively provided with anti-skid bosses 124 protruding from the first working surface 121.

[0051] ​The utility model discloses an asymmetric nail groove 123 is set, one side sets 1 row of nail groove 123, the other side sets multiple rows of nail groove 123, so that the end assembly 100 whole will narrow, can be well adapted when the wound is smaller or the wound is farther from the bleeding point The anastomosis, and when anastomosis, the tissue needed to be free is less (such as blood vessel), and the operation is more simple, fast, safe. The embodiment still through the anti -skidding boss 124, through the anti -skidding boss 124 of array type forms the anti -skidding working surface on the first working surface 121, can prevent the tissue sliding dislocation in the anastomosis process, especially in the case where the number of nail groove rows is reduced, increase the stability of the tissue clamping of the jaw, to improve the anastomosis quality.

[0052] Need to explain, the other side of the push knife groove 122 the setting number of nail groove 123 can be determined according to actual conditions, such as 2 rows, 3 rows, 4 rows of nail groove 123, considering the actual situation and size requirement, such as Figure 4 As shown in the figure, the nail groove 123 is set to 3 rows, Figure 4 In the push knife groove 122, the upper part is a row of nail groove 123, and the lower part is 3 rows of nail groove 123, the adjacent rows of nail groove 123 in the 3 rows of nail groove 123 are staggered, by staggering the nail groove 123, the overall suture quality of the anastomosis nail can be improved, and the damage to the tissue is reduced.

[0053] As an improved embodiment, as shown in Figure 2 And Figure 3 As shown, the distal end of the nail seat 130 is provided with a beak part 132 extending downwardly inclined to the first working surface 121, by setting the beak part 132, the effect of lifting and hooking the tissue can be achieved, which can reduce the use of other instruments, thereby providing the operation efficiency and quality.

[0054] As an improved embodiment, as shown in Figure 2 As shown, the beak part 132 is a sharp end type, to provide better lifting and hooking effect of the tissue, the inclination angle of the beak part 132 is 10-30 degrees, and the inclination angle is too small or too large is not conducive to lifting and hooking the tissue, within the angle range, the effect of lifting and hooking the tissue is better.

[0055] As an improved embodiment, as shown in Figure 2 And Figure 3 As shown, the distal end of the nail seat 130 is provided with a beak part 132 extending downwardly inclined to the first working surface 121, by setting the beak part 132, the effect of lifting and hooking the tissue can be achieved, which can reduce the use of other instruments, thereby providing the operation efficiency and quality.

[0056] As an optimized embodiment, as shown in Figure 2 The protrusion 125 at the distal end of the cartridge 120 is a smooth protrusion 125, which can meet the requirement of locking the tissue and avoid causing tearing injury to the tissue during locking.

[0057] As an optimized embodiment, the cartridge 120 is detachably installed in the cavity of the cartridge base 110 through the clamping structure. The clamping structure improves the detachability of the cartridge 120, so that the end assembly 100 can be quickly reused to improve the quality of the operation and reduce the cost. For example, the two side walls of the cartridge base 110 are provided with clamping grooves 111, and the two sides of the cartridge 120 are provided with outward protruding buckles 126 at the corresponding positions. The upper and lower surfaces of the buckle 126 are provided with inclined surfaces. The two side walls of the cartridge base 110 can be made of a plate material with a certain deformation capacity. During use, the cartridge 120 can be installed in the cavity of the cartridge base 110 by extrusion with external force. When installed in place, the buckle 126 reaches the position of the clamping groove 111, and the buckle 126 is clamped into the clamping groove 111 to realize the clamping of the cartridge 120 and the cartridge base 110. When disassembled, the two side walls of the cartridge base 110 can be pried open by external force or the cartridge 120 can be directly pulled upward. The cartridge 120 can also be disassembled through the inclined surfaces of the buckle 126.

[0058] Participate Figure 1 As shown in the figure, the anti-skid boss 124 is arranged at the edge of the ejection groove 123. The height of the anti-skid boss 124 can be set to about 0.5-3mm, which can effectively prevent the tissue from sliding without affecting the anastomosis function.

[0059] As shown in Figure 1 and Figure 4 The anti-skid boss 124 is arranged at different heights. The closer to the push knife groove 122, the higher the anti-skid boss 124. When the cartridge base 110 and the anvil 130 of the asymmetric end assembly 100 are closed, the left and right forces are balanced to prevent the formation of the nail.

[0060] As shown in Figure 4 The ejection groove 123 is divided into four rows from top to bottom, and the anti-skid boss 124 at the left and right rows of the ejection groove 123 adjacent to the push knife groove 122 has the highest height, that is, the anti-skid boss 124 of the first row and the second row has the same height (for example, both are 2mm). The anti-skid boss 124 at each row of the ejection groove 123 has the same height, and the farther away from the push knife groove 122, the lower the height of the anti-skid boss 124. From the second row to the fourth row (in turn 1.9mm, 1.8mm, 1.7mm), the height of the anti-skid boss 124 gradually decreases, and the height difference of the anti-skid boss 124 between adjacent rows is about 0.08-0.5mm.

[0061] Need to explain, as a complete end assembly 100, the push knife groove 122 should also be provided with a push block, cutting knife, each out of the nail groove 123 should also be provided with a push nail for firing anastomosis nail, push block, cutting knife generally linked to set, should also be provided with a firing mechanism to push the cutting knife, etc. The existing technology or background technology listed in the prior art can be used, and the present utility model does not make relevant improvements, so it will not be repeated.

[0062] Embodiment 2: as Figures 5 to 7 The end assembly 100 is installed at the distal end of the sleeve assembly 200 through the turning connecting block 300, the turning connecting block 300 is connected with the turning pull rod 400, the turning of the end assembly 100 is realized by pulling the turning connecting block 300, the firing beam 500 is connected with the push block, the turning connecting block 300 is composed of the upper connecting block 310 and the lower connecting block 320 which are detachably connected, the upper connecting block 310 and the lower connecting block 320 are both provided with the limiting arc surface 321 which is in contact with the contact part of the firing beam 500, the larger limiting arc surface 321 is arranged, the turning of the turning connecting block 300 to the firing beam 500 is avoided, so that the maximum turning angle of the end assembly 100 is improved, the limiting arc surface 321 on the lower connecting block 320 is symmetrical to two, Figure 6 the left turning and Figure 7 the right turning, both have good limiting effect.

[0063] As Figure 5 The sleeve assembly 200 comprises an inner tube 210 and an outer sleeve 220 which is sleeved on the inner tube 210, the distal end of the inner sleeve is provided with a rotating support piece 211, the proximal end of the nail magazine base 110 and the nail abutting seat 130 is installed on the lower connecting block 320 through the first rotating shaft 330, the upper connecting block 310 and the lower connecting block 320 are installed on the rotating support piece 211 through the second rotating shaft 340, the opening and closing of the nail magazine base 110 and the nail abutting seat 130 is realized through the first rotating shaft, and the turning of the end assembly 100 is realized through the second rotating shaft 340.

[0064] It should be noted that the sleeve assembly 200 should also be installed with a firing assembly and a tail connecting assembly connected with a handle, and the upper connecting block 310 and the lower connecting block 320 should also be provided with a pin shaft 350 connected with the steering pull rod 400, the firing beam 500 is part of the firing assembly, made of flexible material with turning ability, and the steering pull rod 400 is detachably connected with the handle, and the like, which are not improved in the utility model, and can be designed in the prior art or the background art, and the utility model will not be described here.

[0065] The above embodiments are only used to illustrate the utility model, rather than limit the utility model. Although the utility model is described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the utility model do not deviate from the spirit and scope of the utility model, and should be covered in the claim range of the utility model.

Claims

1. An end assembly for a stapler, comprising: The application relates to a staple cartridge base with a single-side opening cavity structure, wherein two ends of the staple cartridge base are a proximal end and a distal end respectively; a staple cartridge is installed in the cavity of the staple cartridge base, and the staple cartridge has a first working surface protruding from the opening of the staple cartridge base; and a staple abutting seat is rotatably connected to the proximal end of the staple cartridge base, so that the distal end of the staple abutting seat and the staple cartridge base can be opened and closed. The first working surface of the staple cartridge is provided with a push-knife groove extending from the proximal end to the distal end, a row of staple discharging grooves is arranged on one side of the first working surface of the push-knife groove, and at least two rows of staple discharging grooves are arranged on the other side of the push-knife groove; the staple abutting seat is provided with a staple abutting groove matched with the position and size of each staple discharging groove, and the outlet edges of each staple discharging groove are respectively provided with anti-skid bosses protruding from the first working surface. The staple discharging grooves on the other side of the push-knife groove are arranged in three rows, and each row of the staple discharging grooves is staggered. The distal end of the staple abutting seat is provided with a beak part extending downward and inclining towards the first working surface. The beak part is a pointed end type, and the inclination angle is 10-30 degrees. The distal end of the staple cartridge is provided with a raised boss in a raised type, the lower side of the beak part is provided with a beak groove matched with the raised boss, and when the staple abutting seat is closed relative to the staple cartridge base, the raised boss and the beak groove are closed to form a locking structure for tissues.

2. The tip assembly of claim 1, wherein, The raised boss at the distal end of the staple cartridge is a smooth raised boss.

3. The tip assembly of claim 1, wherein, The staple cartridge is detachably installed in the cavity of the staple cartridge base through a clamping structure.

4. The tip assembly of claim 3, wherein, The anti-skid bosses are arranged in different heights, and the closer to the push-knife groove, the higher the anti-skid boss.

5. The tip assembly of claim 3, wherein, The upper connecting block and the lower connecting block are respectively provided with a limiting arc surface matched with the contact part of the firing beam.

6. The tip assembly of claim 5, wherein, The sleeve assembly comprises an inner tube and an outer sleeve sleeved on the inner tube, the distal end of the inner tube is provided with a rotating support piece, the proximal end of the staple cartridge base and the staple abutting seat are installed on the lower connecting block through a first rotating shaft, the upper connecting block and the lower connecting block are installed on the rotating support piece through a second rotating shaft, the opening and closing of the staple cartridge base and the staple abutting seat are realized through the first rotating shaft, and the turning of the end assembly is realized through the second rotating shaft.

7. The tip assembly of claim 1, wherein, ​ 8. The tip assembly of claim 1, wherein, ​ 9. A single edge sutured vessel anastomat assembly comprising a sleeve assembly, a steering connector, a steering pull rod, a firing beam and the tip assembly of any one of claims 1-8, the tip assembly being mounted at the distal end of the sleeve assembly via the steering connector, the steering pull rod being connected to the steering connector, the steering of the tip assembly being achieved by pulling the steering connector, a push block and a push knife being connected to each other and being arranged in the push knife slot of the tip assembly, the firing beam being connected to the push block, the steering connector being composed of an upper connector and a lower connector which are detachably connected to each other, characterized in that: ​ 10. The single limb stapling vessel anastomosis device of claim 9, wherein: ​

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