Pointer adjusting assembly, suturing nail forming height adjusting mechanism and tubular anastomat

Abstract

The utility model discloses an indicating pointer adjusting assembly, a suturing nail forming height adjusting mechanism and a tubular anastomat. The indicating pointer adjusting assembly comprises an indicating pointer; the drag hook is suitable for pulling the pointer; the adjusting block assembly comprises an adjusting block suitable for abutting against one end of the drag hook and an elastic cushion block embedded in the adjusting block; a waist-shaped through hole is formed in the elastic cushion block; a mounting hole for embedding the elastic cushion block is formed in the adjusting block; the guide screw comprises a screw body suitable for sequentially penetrating through the mounting hole and the kidney-shaped through hole and a cam arranged on a screw rod of the screw body; the cam is suitable for abutting against the hole wall of the mounting hole.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to an indicator needle adjustment component, a suture staple molding height adjustment mechanism and a tubular stapler. Background Art

[0002] At present, tubular staplers are widely used in surgical operations, which can reduce the operation time and improve the quality of the operation. For example, tubular staplers are often used in end-to-end, end-to-side and side-to-side anastomosis operations of the esophagus, stomach, duodenum, small intestine, colon and rectum in the digestive tract. They are particularly suitable for parts that are difficult to expose and operate, and have a wide range of uses. At present, when assembling tubular stapler products in the early stage, each tubular stapler needs to adjust the forming height of the suture staples. After completing the adjustment of the forming height of the suture staples, the indicator needle needs to be adjusted to the effective area of ​​the indicator window.

[0003] Based on the above situation, in the prior art, an adjustment component for adjusting the indicator needle is designed in the tubular stapler. For example, the indicator safety device of the disposable rotary tubular stapler disclosed in the announcement number CN20973982U adjusts the position of the indicator needle relative to the window through the coordinated use of the indicator needle, pointer pull rod, adjustment block, guide screw and compression spring. Another example is a tubular stapler safety device disclosed in the announcement number CN213465158U. In the process of adjusting the indicator needle in the above-mentioned public technology, it is necessary to manually hold the adjustment block with a tool in one hand to make it move slowly on the screw rod, and determine the position of the adjustment block by observing whether the indicator needle in the indicator window is within the effective area of ​​the indicator window, and then tighten the guide screw with a flat-blade screwdriver in the other hand. During this operation, two tools must be used in conjunction with two hands, which is cumbersome. In addition, since both hands need to be used at the same time, there is no extra hand to hold and control the tubular stapler itself. Therefore, during the process of adjusting the position of the indicator needle, it is inevitable that the tubular stapler will shake due to not being effectively fixed, resulting in inconvenient operation.

[0004] Therefore, in view of the problems existing in the indicator needle position adjustment assembly in the prior art, it is necessary to further optimize the related adjustment structure. Utility Model Content

[0005] The first object of the utility model is to provide an indicator needle adjustment assembly to solve the technical problem of simplifying the position adjustment process of the indicator needle.

[0006] The second object of the utility model is to provide a suture staple forming height adjustment mechanism to solve the technical problem of simplifying the position adjustment process of the indicator needle in the suture staple forming height adjustment mechanism.

[0007] The third object of the utility model is to provide a tubular stapler to solve the technical problem of simplifying the position adjustment process of the indicator needle in the suture staple forming height adjustment mechanism of the tubular stapler.

[0008] The indicator needle adjustment assembly of the utility model is realized as follows:

[0009] An indicator needle adjustment assembly, comprising:

[0010] Indicator needle;

[0011] a pull hook adapted to pull the indicator needle;

[0012] The adjusting block assembly comprises an adjusting block suitable for abutting against one end of the draw hook, and an elastic pad mounted on the adjusting block; the elastic pad is provided with a waist-shaped through hole; and a mounting hole for mounting the elastic pad is formed in the adjusting block;

[0013] The guide screw comprises a screw body which is suitable for sequentially penetrating a mounting hole and a waist-shaped through hole, and a cam arranged on the screw rod of the screw body; the cam is suitable for abutting against the hole wall of the mounting hole.

[0014] In an optional implementation of the present invention, the outer diameter of the screw of the screw body is smaller than the inner diameter of the waist-shaped through hole in the long axis direction; and

[0015] The outer diameter of the cam is smaller than the outer diameter of the screw head.

[0016] In an optional implementation of the present invention, the mounting hole includes a first inner hole and a second inner hole that are connected through each other;

[0017] An L-shaped connecting step is formed between the first inner hole and the second inner hole;

[0018] The elastic pad is suitable for being partially embedded in the first inner hole, and one end of the elastic pad abuts against the L-shaped connecting step;

[0019] The cam is suitable for abutting against the hole wall of the second inner hole.

[0020] In an optional implementation of the present invention, the diameter of the first inner hole is larger than the diameter of the second inner hole; and

[0021] One end of the cam is connected to the screw head of the screw body;

[0022] The side end surface of the screw head facing the cam is suitable for pressing against the end surface of the adjustment block facing away from the first inner hole, so that the cam enters the second inner hole.

[0023] In an optional implementation of the utility model, the regulating block includes a plate-shaped base and two wings connected to the plate-shaped base and arranged oppositely;

[0024] The mounting holes are provided on the plate-like base; and

[0025] The two wings are formed with notches that penetrate the mounting holes;

[0026] The elastic pad is suitable for being embedded in the notch so that the elastic pad is partially embedded in the first inner hole.

[0027] In an optional implementation of the present invention, the elastic pad is made of an elastic material suitable for being deformed by being squeezed.

[0028] The suture staple forming height adjustment mechanism of the utility model is realized as follows:

[0029] A suture staple forming height adjustment mechanism comprises: a screw rod and an adjustment nut used in conjunction with each other, and the indicator needle adjustment assembly; wherein

[0030] The draw hook is provided with a connector sleeved on the screw rod; the connector abuts against the adjustment block;

[0031] The screw rod is also provided with a connection hole for cooperating with the screw thread of the screw body; and

[0032] The screw rod is also sleeved with a spring; one end of the spring is suitable for abutting against an end of the connector facing away from the adjusting block.

[0033] In an optional implementation of the utility model, the suture staple forming height adjustment mechanism further includes a connecting piece connected to the screw rod, a guide shaft connected to the connecting piece, and an outer tube provided on the outer layer of the connecting piece and suitable for the connecting piece to penetrate; wherein

[0034] The connecting piece and the guide shaft are suitable for synchronous movement in the outer tube along with the axial displacement of the screw rod.

[0035] The tubular stapler of the utility model is realized in this way:

[0036] A tubular stapler comprises: an outer shell and the staple forming height adjustment mechanism arranged in the outer shell, and a staple cartridge assembly and a staple support assembly arranged at the distal end of the outer shell; wherein

[0037] The outer shell is provided with a positioning portion for abutting against an end of the spring facing away from the connecting head.

[0038] In an optional implementation of the present invention, the outer shell is further provided with a window suitable for observing the indicator needle from the outside of the outer shell.

[0039] By adopting the above technical scheme, the utility model has the following beneficial effects: the indicator needle adjustment assembly, the suture staple forming height adjustment mechanism and the tubular stapler of the utility model, through the cooperation of the guide screw, the adjustment block and the elastic pad, when it is necessary to adjust the position of the indicator needle, the guide screw is rotated manually using a tool, and the guide screw is rotated down until its cam contacts the hole wall of the mounting hole of the adjustment block, and the guide screw is continued to be rotated, and the cam gradually moves downward while increasing the force of the adjustment block pressing on the hook and causing the adjustment block to move toward the connector of the hook, when the screw head of the guide screw presses on the adjustment block, the guide screw continues to move downward, that is, the adjustment block moves downward accordingly, and the elastic pad and the adjustment block are engaged with each other, so the elastic pad begins to be compressed until the guide screw stops moving. In this process, as the adjustment block moves toward the connector and the overall hook moves toward the spring side, the hook can drive the indicator needle to move in the direction of the adjustment block, thereby causing the indicator needle to enter the fixed position of the window, which means that the position of the indicator needle is adjusted in place. During this process, the operator only needs to use one tool and one hand to complete the operation, which improves the convenience and stability of the indicator needle adjustment operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of a part of the internal structure of the tubular stapler of the utility model;

[0041] Figure 2 It is a structural schematic diagram of the indicator needle adjustment assembly of the tubular stapler of the utility model;

[0042] Figure 3 for Figure 2 A magnified view of part A;

[0043] Figure 4 It is a structural schematic diagram of an elastic pad of an indicator needle adjustment assembly of a tubular stapler of the utility model;

[0044] Figure 5 It is a structural schematic diagram of an adjustment block of an indicator needle adjustment assembly of a tubular stapler of the utility model;

[0045] Figure 6 It is a structural schematic diagram of the guide screw of the indicator needle adjustment assembly of the tubular stapler of the utility model;

[0046] Figure 7 It is a schematic cross-sectional structural diagram of the tubular stapler of the present utility model.

[0047] In the figure: indicating needle 1, needle head 11, retractor 2, connector 21, adjusting block 3, first inner hole 31, second inner hole 32, plate-like base 33, wing 34, slot 35, elastic pad 4, waist-shaped through hole 41, guide screw 5, screw rod 51, screw head 52, cam 53, screw rod 61, connecting hole 611, adjusting nut 62, spring 63, connecting plate 64, guide shaft 65, outer tube 66, nail support assembly 67, nail magazine assembly 68, window 69, fixed point 691, outer shell 100, positioning part 101, gasket 200. DETAILED DESCRIPTION

[0048] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0049] Embodiment 1:

[0050] See also Figures 1 to 7 As shown, this embodiment provides an indicator needle adjustment assembly, including: an indicator needle 1; a pull hook 2, which is suitable for pulling the indicator needle 1; an adjustment block assembly, which includes an adjustment block 3 suitable for abutting against one end of the pull hook 2, and an elastic pad 4 mounted on the adjustment block 3; a waist-shaped through hole 41 is provided on the elastic pad 4; a mounting hole for mounting the elastic pad 4 is formed in the adjustment block 3; a guide screw 5, which includes a screw body suitable for sequentially passing through the mounting hole and the waist-shaped through hole 41 and a cam 53 provided on the screw rod 51 of the screw body; the cam 53 is suitable for abutting against the hole wall of the mounting hole. It should be noted that the specific structure and principle of the indicator needle 1 and the pull hook 2 here can be selected by any mature means in the prior art, and this embodiment does not make an absolute limitation on this.

[0051] On the basis of the above structure, it is necessary to further explain that the outer diameter of the screw rod 51 of the screw body is smaller than the inner diameter of the long axis direction of the waist-shaped through hole 41; and the outer diameter of the cam 53 is smaller than the outer diameter of the screw head 52. Under this structure, the cam 53 can gradually enter the installation hole as the pilot screw is selected, so that the pilot screw generates a driving force for the movement of the adjustment block 3.

[0052] In order to enable the cam 53 to generate a thrust for the movement of the adjusting block 3 and not be hindered by the elastic pad 4 during the movement of the cam 53, the mounting hole in this embodiment includes a first inner hole 31 and a second inner hole 32 that are connected to each other; an L-shaped connecting step is formed between the first inner hole 31 and the second inner hole 32; the elastic pad 4 is suitable for being partially embedded in the first inner hole 31, and one end of the elastic pad 4 is abutted against the L-shaped connecting step; the cam 53 is suitable for abutting against the hole wall of the second inner hole 32.

[0053] Furthermore, based on the above situation, an optional situation is given in combination with the attached figure, the aperture of the first inner hole 31 is larger than the aperture of the second inner hole 32; and one end of the cam 53 is connected to the screw head 52 of the screw body; the side end surface of the screw head 52 facing the cam 53 is suitable for pressing against the end surface of the adjustment block 3 facing away from the first inner hole 31, so that the cam 53 enters the second inner hole 32. It should also be noted here that the cam 53 can enter the second inner hole 32 as the pilot screw rotates, but no matter how many times the pilot screw rotates, the cam 53 will not enter the waist-shaped through hole 41 of the elastic pad 4, that is, a step is formed between the hole wall of the waist-shaped through hole 41 and the hole wall of the second inner hole 32 to prevent the cam 53 from entering the waist-shaped through hole 41.

[0054] In more detail, the adjustment block 3 used in this embodiment includes a plate-like base 33 and two wings 34 connected to the plate-like base 33 and arranged opposite to each other; wherein a mounting hole is provided on the plate-like base 33; and the two wings 34 are formed with a notch 35 which passes through the mounting hole; and the elastic pad 4 is suitable for being embedded in the notch 35 so that the elastic pad 4 is partially embedded in the first inner hole 31.

[0055] In addition, it should be noted that the elastic pad 4 in this embodiment is made of an elastic material suitable for deformation by extrusion, such as but not limited to silicone or rubber.

[0056] In summary, for the indicator needle adjustment assembly of the present embodiment, the guide screw is manually rotated using a tool, and the guide screw rotates down until its cam 53 contacts the hole wall of the mounting hole of the adjustment block 3, and the guide screw continues to be rotated. The cam 53 gradually moves downward while increasing the force of the adjustment block 3 pressing on the hook 2 and causing the adjustment block 3 to move toward the connector 21 of the hook 2. When the hook 2 moves, a pulling force is generated on the indicator needle 1, thereby causing the indicator needle 1 to change its position as the hook 2 moves.

[0057] Embodiment 2:

[0058] See also Figures 1 to 7As shown, based on the indicator needle adjustment assembly of Example 1, this embodiment provides a suture staple forming height adjustment mechanism, including: a screw rod 61 and an adjustment nut 62 used in conjunction, and the indicator needle adjustment assembly of Example 1; wherein the hook 2 is formed with a connector 21 sleeved on the screw rod 61; the connector 21 abuts against the adjustment block 3; the screw rod 61 is also provided with a connection hole 611 for threaded engagement with the screw rod 51 of the screw body; and the screw rod 61 is also sleeved with a spring 63; one end of the spring 63 is suitable for abutting against the end of the connector 21 facing away from the adjustment block 3. The matching relationship and implementation principle between the spring 63, the screw rod 61, the adjustment nut 62 and the adjustment block 3 here can adopt any mature means in the prior art, and this embodiment does not make an absolute limitation on this. Compared with the mature means of the prior art, this embodiment only changes the driving mode of the movement process of the adjustment block 3 on the basis of Example 1, which can simplify the process of manual operation.

[0059] On the basis of the above structure, it should be noted that the suture staple forming height adjustment mechanism used in this embodiment can be selected to adopt any mature means in the prior art, and this embodiment does not make an absolute limitation on this. Generally speaking, the suture staple forming height adjustment mechanism used in this embodiment also includes a connecting piece 64 connected to the screw rod 61, a guide shaft 65 connected to the connecting piece 64, and an outer tube 66 provided on the outer layer of the connecting piece 64 and suitable for the connecting piece 64 to pass through; wherein the connecting piece 64 and the guide shaft 65 are suitable for synchronous movement in the outer tube 66 with the axial displacement of the screw rod 61.

[0060] Embodiment 3:

[0061] See also Figures 1 to 7 As shown, based on the suture staple forming height adjustment mechanism of Example 2, this embodiment provides a tubular stapler, comprising: an outer shell 100 and the suture staple forming height adjustment mechanism of Example 2 arranged in the outer shell 100, and a staple cartridge assembly 68 and a staple anvil assembly 67 arranged at the far hand end of the outer shell 100; wherein a positioning portion 101 for abutting against the end of the spring 63 facing away from the connector 21 is provided in the outer shell 100. A channel suitable for the guide shaft 65 to pass through is provided in the staple cartridge assembly 68 here. Therefore, when the user rotates the adjustment nut 62, the staple anvil assembly 67 can be driven to move away from or close to the staple cartridge assembly 68, thereby adjusting the forming height of the suture staple.

[0062] Furthermore, it should be noted that the outer shell 100 is also provided with a window 69 suitable for observing the indicator needle 1 from the outside of the outer shell 100. A fixed point 691 corresponding to the absolute position of the indicator needle 1 is preset in the window 69, that is, in the process of adjusting the indicator needle 1, the indicator needle 1 needs to move to the fixed point 691 where the needle head 11 of the indicator needle 1 can enter the window 69. Of course, this part of the technology is also a mature means in the prior art, and the principle will not be repeated here.

[0063] In summary, the general usage process of the tubular stapler of this embodiment is as follows:

[0064] When the adjusting nut 62 is rotated, the screw rod 61, the connecting piece 64, the guide shaft 65, and the nail support assembly 67 are connected to each other. Therefore, when the adjusting nut 62 is rotated, a force is applied to the screw rod 61 to move away from the adjusting nut 62. The screw rod 61 thrusts the connecting piece 64, the connecting piece 64 thrusts the guide shaft 65, and the guide shaft 65 thrusts the nail support assembly 67 to move the nail support assembly 67 away from the nail magazine assembly 68. When the gap between the nail support assembly 67 and the nail magazine assembly 68 is sufficient, stop rotating the adjusting nut 62. Place a 0.5mm gasket between the nail support assembly 67 and the nail magazine assembly 68. At this time, rotate the adjusting nut 62 in the opposite direction, and the nail support assembly 67 is close to the nail magazine assembly 68. After the gasket 200 is clamped, observe through the window 69 on the outer shell 100. At this time, the position of the needle head 11 of the indicator needle 1 is not at the fixed position 691, and the position of the indicator needle 1 needs to be debugged.

[0065] When the position of the indicator needle 1 needs to be adjusted, the guide screw is rotated and lowered by a tool, and the guide screw rotates and descends until its cam 53 contacts the hole wall of the mounting hole of the adjustment block 3. The guide screw is rotated continuously, and the cam 53 gradually moves downward while increasing the force exerted on the adjustment block 3 against the hook 2 and causing the adjustment block 3 to move toward the connector 21 of the hook 2. When the screw head 52 of the guide screw presses against the adjustment block 3, the guide screw continues to move downward, and the adjustment block 3 moves downward accordingly, and the elastic pad 4 and the adjustment block 3 are engaged with each other, so the elastic pad 4 begins to be compressed until the guide screw stops moving. In this process, as the adjustment block 3 moves toward the connector 21 and the entire hook 2 moves toward the side of the spring 63, the hook 2 can drive the indicator needle 1 to move in the direction of the adjustment block 3, thereby causing the indicator needle 1 to enter the fixed position of the window 69, which indicates that the position of the indicator needle 1 is adjusted in place. In this process, the operator only needs to use one tool and one hand to complete the operation process, which improves the convenience and stability of the adjustment operation of the indicator needle 1.

[0066] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0067] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0068] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does 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 cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0070] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0071] In the present utility model, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

Claims

1. An indicator needle adjustment assembly, characterized in that: include: Indicator needle; a pull hook adapted to pull the indicator needle; The adjusting block assembly comprises an adjusting block suitable for abutting against one end of the draw hook, and an elastic pad mounted on the adjusting block; the elastic pad is provided with a waist-shaped through hole; and a mounting hole for mounting the elastic pad is formed in the adjusting block; The guide screw comprises a screw body which is suitable for sequentially penetrating a mounting hole and a waist-shaped through hole, and a cam arranged on the screw rod of the screw body; the cam is suitable for abutting against the hole wall of the mounting hole.

2. The indicator needle adjustment assembly according to claim 1, characterized in that: The outer diameter of the screw rod of the screw body is smaller than the inner diameter of the waist-shaped through hole in the long axis direction; and The outer diameter of the cam is smaller than the outer diameter of the screw head.

3. The indicator needle adjustment assembly according to claim 1, characterized in that: The mounting hole includes a first inner hole and a second inner hole which are connected through each other; An L-shaped connecting step is formed between the first inner hole and the second inner hole; The elastic pad is suitable for being partially embedded in the first inner hole, and one end of the elastic pad abuts against the L-shaped connecting step; The cam is suitable for abutting against the hole wall of the second inner hole.

4. The indicator needle adjustment assembly according to claim 3, characterized in that: The diameter of the first inner hole is larger than the diameter of the second inner hole; and One end of the cam is connected to the screw head of the screw body; The side end surface of the screw head facing the cam is suitable for pressing against the end surface of the adjustment block facing away from the first inner hole, so that the cam enters the second inner hole.

5. The indicator needle adjustment assembly according to claim 3 or 4, characterized in that: The regulating block comprises a plate-shaped base and two wings connected to the plate-shaped base and arranged oppositely; The mounting holes are provided on the plate-like base; and The two wings are formed with notches that penetrate the mounting holes; The elastic pad is suitable for being embedded in the notch so that the elastic pad is partially embedded in the first inner hole.

6. The indicator needle adjustment assembly according to claim 5, characterized in that: The elastic pad is made of an elastic material suitable for being deformed by being squeezed.

7. A suture staple forming height adjustment mechanism, characterized in that: include: A screw rod and an adjusting nut used in conjunction with each other, and an indicator needle adjustment assembly as claimed in any one of claims 1 to 6; wherein The draw hook is provided with a connector sleeved on the screw rod; the connector abuts against the adjustment block; The screw rod is also provided with a connection hole for cooperating with the screw thread of the screw body; and The screw rod is also sleeved with a spring; one end of the spring is suitable for abutting against an end of the connector facing away from the adjusting block.

8. The staple forming height adjustment mechanism according to claim 7, characterized in that: The suture staple forming height adjustment mechanism also includes a connecting piece connected to the screw rod, a guide shaft connected to the connecting piece, and an outer tube provided on the outer layer of the connecting piece and suitable for the connecting piece to penetrate; in The connecting piece and the guide shaft are suitable for synchronous movement in the outer tube along with the axial displacement of the screw rod.

9. A tubular stapler, characterized in that: include: An outer shell and a staple forming height adjustment mechanism as claimed in claim 7 or 8 arranged in the outer shell, and a staple cartridge assembly and a staple support assembly arranged at the distal end of the outer shell; wherein The outer shell is provided with a positioning portion for abutting against an end of the spring facing away from the connecting head.

10. The tubular stapler according to claim 9, characterized in that: The outer shell is also provided with a viewing window suitable for observing the indicator needle from the outside of the outer shell.

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