Anastomat

Abstract

The invention provides an anastomat which comprises an anastomat body, a rack is arranged on the anastomat body, and a plurality of check blocks which are arranged at intervals and are different in height are arranged on one side of the rack; the gear assembly comprises a support and a connecting piece, the connecting piece can move on the support to be close to or away from the check block, and a stroke control block is arranged on the connecting piece; and the driving piece drives the rack to move in a reciprocating mode, and the stroke control block is matched with the check blocks of different heights in the moving process of the rack so that the rack can be located at different positions. According to the anastomat, the distance between each check block and the stroke control block is different, in the advancing process of the rack, the stroke control block is controlled to be matched with the check blocks with different heights in an abutting mode, the stroke control block controls the running stroke length of the rack, and therefore the requirements of the anastomat for different cutting lengths are met.

Description

Technical Field

[0001] The present disclosure relates to the technical field of medical devices, and in particular to a stapler. Background Art

[0002] The surgical stapler is a commonly used surgical instrument. It replaces the traditional manual suture and is mainly used for organ stump closure and incision anastomosis in surgical treatment. Currently, purely manual instruments are commonly used in the market. With the development of automation, some electric products have been developed and used, among which the products of Ethicon and American Surgical Company are relatively mature. The use of electric instruments improves the stability of surgical cutting and anastomosis, greatly improving the use of doctors.

[0003] The existing stapler selects the stroke by moving the rack to cooperate with the stroke control block. When the rack is driven to move, since only one end of the rack is subjected to force to move closer to or away from the stroke control block, it is easy to cause the rack to tilt, which affects the moving accuracy of the rack. Moreover, when the rack is driven by the driving member, due to the rack tilt, it is easy to generate a large friction with the stapler body, which greatly increases the probability of damage to the stapler.

[0004] Moreover, the existing staplers use electronic control to achieve stroke switching, which makes operation inconvenient during surgery. Since most surgical environments are strong magnetic field environments, electronic control stroke switching is prone to the risk of stroke switching failure.

[0005] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the disclosure and should not be regarded as an acknowledgement or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0006] In view of this, an object of the present disclosure is to provide a stapler with adjustable stroke.

[0007] To achieve the above-mentioned purpose, the present disclosure provides a stapler, comprising: a stapler body, on which is provided:

[0008] A rack, one side of which is provided with a plurality of stoppers arranged at intervals and at different heights;

[0009] A gear assembly, comprising a bracket and a connecting piece, wherein the connecting piece can move on the bracket to approach or move away from the stop block, and a travel control block is provided on the connecting piece;

[0010] A driving member drives the rack to move back and forth, and the travel control block cooperates with blocks at different heights during the movement of the rack to position the rack at different positions.

[0011] In one or more embodiments, a groove is provided inwardly along one side surface of the rack, and the stoppers are arranged in the groove at intervals.

[0012] In one or more embodiments, the heights of the plurality of stoppers increase sequentially from the distal end to the proximal end of the stapler body.

[0013] In one or more embodiments, the connecting member includes a moving plate and a threaded rod located on one side of the moving plate, and the travel control block is located on the other side of the moving plate.

[0014] In one or more embodiments, the bracket includes a side plate and a first support plate and a second support plate located on one side of the side plate, one end of the first support plate is connected to one end of the side plate, one end of the second support plate is connected to the other end of the side plate, and the first support plate and the second support plate are both connected to the anastomosis device body.

[0015] In one or more embodiments, an adjustment component is further included, the adjustment component includes a threaded sleeve, the outer wall of the threaded sleeve is provided with a limiting portion, an annular groove is provided around the end of the threaded sleeve, a clamp is provided corresponding to the annular groove, the minimum distance between the clamp and the limiting portion is greater than the thickness of the side plate in a direction perpendicular to the rack, a connecting hole is opened on the side plate, and the outer diameter of the threaded sleeve is smaller than the inner diameter of the connecting hole.

[0016] In one or more embodiments, the inner wall of the threaded sleeve is provided with threads threadedly connected to the threaded rod, and the threaded sleeve can drive the threaded rod to approach or move away from the groove.

[0017] In one or more embodiments, a stroke adjustment knob is provided on the threaded sleeve, and the stroke adjustment knob includes a screwing contact portion and a shielding portion located at one end of the screwing contact portion, and the shielding portion is provided with a notch. A stroke indicator is provided on the anastomosis device body, and an opening is provided in the middle of the stroke indicator for plugging and cooperating with the threaded sleeve, and a plurality of scale lines are provided on the periphery of the opening, and the notch corresponds to a scale line.

[0018] In one or more embodiments, a limit block capable of abutting against the travel control block is provided at one end of the groove away from the stop block.

[0019] In one or more embodiments, a control switch is provided on the stapler body, and a touch block is provided on the connecting member, wherein the touch block at least partially overlaps with the orthographic projection of the control switch along a direction parallel to the extension direction of the rack.

[0020] Compared with the prior art, the stapler according to the present disclosure has the following advantages:

[0021] By moving the stroke control block to move closer to or away from the rack, the rack maintains a relatively uniform moving direction and does not deviate, thereby reducing the friction between the rack and the stapler body, ensuring the accuracy of the rack movement, and thus increasing the service life of the stapler body.

[0022] The travel control block on the connecting piece is controlled to move by manual operation to achieve travel control, which has the advantages of simple structure, low cost, safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of a stapler according to an embodiment of the present disclosure;

[0024] Figure 2 is a cross-sectional view of a stapler according to an embodiment of the present disclosure;

[0025] Figure 3 is a schematic structural diagram of a rack and a gear assembly of a stapler according to an embodiment of the present disclosure;

[0026] Figure 4 It is a schematic structural diagram of a rack, a gear assembly and an adjustment assembly of a stapler according to an embodiment of the present disclosure;

[0027] Figure 5 is a schematic structural diagram of a gear assembly and an adjustment assembly of a stapler according to an embodiment of the present disclosure;

[0028] Figure 6 is a schematic structural diagram of a driving assembly of a stapler according to an embodiment of the present disclosure;

[0029] Figure 7 is a schematic structural diagram of a guide groove of a stapler according to an embodiment of the present disclosure;

[0030] Figure 8 It is a schematic structural diagram of a rack of a stapler according to an embodiment of the present disclosure.

[0031] Description of main reference numerals:

[0032] 1. Stapler body; 2. Driving member; 21. Driving motor; 22. First gear; 23. Second gear; 3. Rack; 31. Groove; 32. Block; 4. Bracket; 41. Side plate; 411. Connecting hole; 42. First support plate; 43. Second support plate; 5. Connecting member; 51. Stroke control block; 52. Moving plate; 53. Threaded rod; 54. Touch block; 55. Guide plate; 6. Threaded sleeve; 61. Limiting part; 62. Annular groove; 63. Clamp; 7. Stroke adjustment knob; 71. Screwing contact part; 72. Shielding part; 721. Notch; 8. Stroke indicator plate; 9. Guide groove; 10. Limiting block. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. The components of the embodiments of the present disclosure described and shown in the drawings here can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present disclosure provided in the accompanying drawings is not intended to limit the scope of the present disclosure claimed for protection, but merely represents selected embodiments of the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present disclosure.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0036] In the description of the embodiments of the present disclosure, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the application is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0037] In the description of the embodiments of the present disclosure, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0038] In the description of the embodiments of the present disclosure, it should be noted that the terms “first”, “second”, etc. used herein do not specifically refer to order or sequence, nor are they intended to limit the present case. They are only used to distinguish components or operations described with the same technical terms.

[0039] It should be noted that, in order to more clearly describe the structure of the medical handle, the term "distal end" is defined herein to mean the end away from the operator during the surgical operation, and the term "proximal end" is defined herein to mean the end close to the operator during the surgical operation. Unless otherwise defined, all technical and scientific terms used in the present invention have the same meanings as those generally understood by those skilled in the art to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0040] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0041] like Figures 1 to 8 As shown, a stapler according to an embodiment of the present disclosure includes: a stapler body 1, on which are provided:

[0042] A rack 3, one side of which is provided with a plurality of stoppers 32 arranged at intervals and of different heights;

[0043] The gear assembly comprises a bracket 4 and a connecting member 5. The connecting member 5 can move on the bracket 4 to approach or move away from the stopper 32. The connecting member 5 is provided with a travel control block 51.

[0044] The driving member 2 is used to drive the rack to move back and forth, and the stroke control block 51 is used to cooperate with the stoppers at different heights during the movement of the rack to position the rack at different positions.

[0045] In the above structure, the different distances between each stop block 32 and the stroke control block 51 are utilized. During the movement of the rack 3, the stroke control block 51 is controlled to abut against the stop blocks 32 of different heights to achieve control of the stroke length of the rack 3 by the stroke control block 51, thereby meeting the requirements of the stapler for different cutting lengths.

[0046] Specifically, if Figure 3 , Figure 4 and Figure 8 As shown, in one embodiment, a groove 31 is provided inwardly along one side surface of the rack 3, and the blocks 32 are arranged in the groove 31 at intervals. Preferably, the blocks 32 are arranged at equal intervals. The heights of the multiple blocks 32 increase from the distal end to the proximal end of the stapler body 1. Specifically, when the stroke control block 51 can form an abutment relationship with the block 32 with a lower height, the running stroke of the rack 3 is shorter; when the stroke control block 51 can only form an abutment relationship with the block 32 with a higher height, the running stroke of the rack 3 is longer.

[0047] Preferably, the height and density of the stoppers 32 can be set according to actual usage requirements.

[0048] Please also see Figure 5 In order to facilitate the control of the stroke control block 51 to approach or move away from the groove 31 (i.e., the stroke control block 51 moves in a direction perpendicular to the rack 3), so as to facilitate the control of the stroke control block 51 and the stroke abutment relationship of the stroke control block 51 at different heights. An adjustment component is provided on the connecting member 5, and the stroke control block 51 is controlled to approach or move away from the groove 31 by adjusting the adjustment component. Specifically, the connecting member 5 includes a moving plate 52 and a threaded rod 53 located on one side of the moving plate 52, and the stroke control block 51 is located on the other side of the moving plate 52. The moving plate 52 is driven by driving the threaded rod 53 to drive the stroke control block 51 to approach or move away from the groove 31.

[0049] Please also see Figure 4 As shown, in order to realize the support and positioning of the connecting member 5, a bracket 4 is provided on the stapler body 1, and the bracket 4 includes a side plate 41 and a first support plate 42 and a second support plate 43 located on one side of the side plate 41. Preferably, one end of the first support plate 42 is connected to one end of the side plate 41, and one end of the second support plate 43 is connected to the other end of the side plate 41, and the first support plate 42 and the second support plate 43 are both connected to the stapler body 1, that is, the bracket 4 is fixed to the stapler body 1 through the first support plate 42 and the second support plate 43.

[0050] Please also see Figure 4As shown, the adjustment assembly includes a threaded sleeve 6, and a connecting hole 411 is opened on the side plate 41. The connecting hole 411 is a long hole. The outer diameter of the threaded sleeve 6 is smaller than the inner diameter of the connecting hole 411, so that the threaded sleeve 6 can be inserted into the connecting hole 411 and can reciprocate in the long hole along the extension direction parallel to the rack 3. In order to limit the installation of the threaded sleeve 6 in the connecting hole 411 of the side plate 41, a limiting portion 61 is provided on the outer wall of the threaded sleeve 6, and an annular groove 62 is provided around the end of the threaded sleeve 6. A clamp 63 is provided corresponding to the annular groove 62. The minimum distance between the clamp 63 and the limiting portion 61 is greater than the thickness of the side plate 41 in the direction perpendicular to the rack 3, so that the threaded sleeve 6 can be installed on the connecting hole 411 of the side plate 41 through the clamping effect of the annular groove 62 and the limiting portion 61. The clamping effect of the annular groove 62 and the limiting portion 61 can only prevent the threaded sleeve 6 from falling off the connecting hole 411, but will not affect the rotation of the threaded sleeve 6 under the action of force.

[0051] In one embodiment, the inner wall of the threaded sleeve 6 is provided with a thread that is screwed to the threaded rod 53, and the threaded sleeve 6 and the threaded rod 53 are screwed to each other to achieve the installation of the connecting member 5 on the bracket 4, so that the threaded rod 53 can be driven to approach or move away from the groove 31 by rotating the threaded sleeve 6.

[0052] like Figure 8 As shown, in a preferred embodiment, a limit block 10 capable of abutting against the stroke control block 51 is provided at one end of the groove 31 away from the stop block 32. The limit block 10 is provided to prevent the stroke control block 51 from being separated from the groove 31, and to enable the rack 3 to drive the connecting member 5 to reset through the limit block 10 when retreating.

[0053] A control switch is provided on the stapler body 1, and a touch block 54 is provided on the movable plate 52. The touch block 54 at least partially overlaps with the control switch in the positive projection along the direction parallel to the extension direction of the rack 3. Such an arrangement enables the touch block 54 to follow the movement of the movable plate 52 and contact the control switch to control the stroke control of the drive member 2 on the rack 3, thereby preventing excessive movement of the rack 3.

[0054] like Figure 1 and Figure 4As shown, in one embodiment, a stroke adjustment knob 7 is provided on the threaded sleeve 6, and the stroke adjustment knob 7 includes a screwing contact portion 71 and a shielding portion 72 located at one end of the screwing contact portion 71, and the shielding portion 72 is provided with a notch 721. A stroke indicator 8 is provided on the stapler body 1, and an opening is provided in the middle of the stroke indicator 8 for plugging and matching with the threaded sleeve 6, and a plurality of scale lines are provided on the outer periphery of the opening, and the notch 721 can only correspond to one of the plurality of scale lines. That is, the threaded sleeve 6 is driven to rotate synchronously by hanging the stroke adjustment knob 7, thereby driving the connecting member 5 to drive the stroke control block 51 to approach or move away from the groove 31. The coordination of the notch 721 and the scale line is to accurately rotate the stroke adjustment knob 7 according to the scale line, so as to accurately control the distance of the stroke control block 51 moving toward or away from the groove 31.

[0055] like Figure 7 As shown, in a preferred embodiment, a guide plate 55 is further provided on the movable plate 52, and a guide groove 9 is provided on the stapler body 1 to cooperate with the guide plate 55, and the guide groove 9 is used to prevent the movable plate 52 from not rotating with the stroke adjustment knob 7.

[0056] like Figure 6 As shown, the adjustment component includes a motor and a first gear 22 arranged at the output end of the motor. A second gear 23 meshing with the rack 3 is provided on the stapler body 1. The first gear 22 meshes with the second gear 23 to realize the reciprocating motion of the rack 3 driven by the motor.

[0057] Compared with the prior art, the stapler according to the present disclosure has the following advantages:

[0058] By moving the stroke control block 51 to move closer to or away from the rack 3, the rack 3 maintains a relatively uniform moving direction without deviation, thereby reducing the friction between the rack 3 and the stapler body 1, ensuring the accuracy of the movement of the rack 3, and thus increasing the service life of the stapler body 1.

[0059] The travel control block 51 on the connecting member 5 is controlled to move by manual operation to achieve travel control, which has a simple structure, low cost, and is safe and reliable.

[0060] The working principle of the stapler disclosed in the present invention is as follows:

[0061] When the stroke of the rack 3 needs to be shorter, the stroke adjustment knob is rotated to make the threaded rod 53 matched therewith move toward the direction close to the rack 3, thereby pushing the movable plate 52 and the stroke control block 51 on the movable plate 52 toward the direction close to the rack 3 through the threaded rod 53. When the stroke control block 51 and the lower block can form abutment along the extension direction of the rack 3, the rack 3 is driven to move through the driving member 2. In this case, the movement stroke of the rack 3 is shorter.

[0062] When a longer stroke of the rack 3 is required, the direction adjustment stroke knob is rotated to cause the threaded rod 53 cooperating therewith to move in a direction away from the rack 3, thereby pushing the movable plate 52 and the stroke control block 51 on the movable plate 52 to move in a direction away from the rack 3 through the threaded rod 53. When the stroke control block 51 and the higher block can form abutment along the extension direction of the rack 3, the rack 3 is driven to move through the driving member 2. In this case, the movement stroke of the rack 3 is longer.

[0063] The foregoing description of specific exemplary embodiments of the present disclosure is for the purpose of illustration and demonstration. These descriptions are not intended to limit the present disclosure to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present disclosure and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the present disclosure and various different selections and changes. The scope of the present disclosure is intended to be defined by the claims and their equivalents.

Claims

1. A stapler, characterized in that: include: The stapler body (1) is provided with: A rack (3), wherein one side of the rack (3) is provided with a plurality of stoppers (32) which are arranged at intervals and have different heights; A gear assembly comprises a bracket (4) and a connecting member (5), wherein the connecting member (5) can move on the bracket (4) to approach or move away from the stop block (32), and a travel control block (51) is provided on the connecting member (5); A driving member (2) is used to drive the rack to move back and forth, and the travel control block (51) is used to cooperate with blocks at different heights during the movement of the rack to position the rack at different positions.

2. The stapler according to claim 1, characterized in that: A groove (31) is provided inwardly on one side surface of the rack (3), and the stoppers (32) are arranged in the groove (31) at intervals.

3. The stapler according to claim 2, characterized in that: The heights of the plurality of stoppers (32) increase sequentially from the distal end to the proximal end of the stapler body (1).

4. The stapler according to claim 2, characterized in that: The connecting member (5) comprises a movable plate (52) and a threaded rod (53) located on one side of the movable plate (52), and the travel control block (51) is located on the other side of the movable plate (52).

5. The stapler according to claim 4, characterized in that: The bracket (4) comprises a side plate (41) and a first support plate (42) and a second support plate (43) located on one side of the side plate (41), one end of the first support plate (42) is connected to one end of the side plate (41), one end of the second support plate (43) is connected to the other end of the side plate (41), and the first support plate (42) and the second support plate (43) are both connected to the stapler body (1).

6. The stapler according to claim 5, characterized in that: The invention also comprises an adjusting component, wherein the adjusting component comprises a threaded sleeve (6), the outer wall of the threaded sleeve (6) is provided with a limiting portion (61), an annular groove (62) is provided around the end of the threaded sleeve (6), a clamp (63) is provided corresponding to the annular groove (62), the minimum distance between the clamp (63) and the limiting portion (61) is greater than the thickness of the side plate (41) in a direction perpendicular to the rack (3), a connecting hole (411) is provided on the side plate (41), and the outer diameter of the threaded sleeve (6) is smaller than the inner diameter of the connecting hole (411).

7. The stapler according to claim 6, characterized in that: The inner wall of the threaded sleeve (6) is provided with a thread that is threadedly connected to the threaded rod (53), and the threaded sleeve (6) can drive the threaded rod (53) to approach or move away from the groove (31).

8. The stapler according to claim 6, characterized in that: The threaded sleeve (6) is provided with a stroke adjustment knob (7), the stroke adjustment knob (7) comprising a screwing contact portion (71) and a shielding portion (72) located at one end of the screwing contact portion (71), the shielding portion (72) being provided with a notch (721), the stapler body (1) being provided with a stroke indicator plate (8), the middle portion of the stroke indicator plate (8) being provided with an opening for plugging and matching with the threaded sleeve (6), a plurality of scale lines being provided on the outer periphery of the opening, the notch (721) corresponding to one scale line.

9. The stapler according to claim 2, characterized in that: A limit block (10) for abutting against the travel control block (51) is provided at one end of the groove (31) away from the stop block (32).

10. The stapler according to claim 1, characterized in that: The stapler body (1) is provided with a control switch, and the connecting member (5) is provided with a touch block (54), wherein the touch block (54) at least partially overlaps with the positive projection of the control switch along a direction parallel to the extension of the rack (3).

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