CN209884236U

CN209884236U - Nail pushing mechanism for anastomat

Info

Publication number: CN209884236U
Application number: CN201822277002.1U
Authority: CN
Inventors: 李茂富; 王宇昊
Original assignee: Anhui Mcgien Medical Technology Co Ltd
Current assignee: Anhui Mcgien Medical Technology Co Ltd
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2020-01-03
Anticipated expiration: 2028-12-29

Abstract

The utility model discloses an anastomat is with pushing away nail mechanism, include: the nail magazine comprises a nail magazine frame, two groups of nail pushing block assemblies arranged in the nail magazine frame, a pair of pushing blocks suitable for respectively pushing the two groups of nail pushing block assemblies to move towards a nail groove direction so as to push out anastomotic nails from the nail groove, and a triggering assembly suitable for triggering the pushing blocks; the firing assembly comprises waist-shaped hole units symmetrically arranged on the pair of pushing blocks, fixing rods simultaneously penetrating through the waist-shaped holes on the pair of pushing blocks, and power units suitable for abutting against to push the pushing blocks to slide along the fixing rods; wherein, the two axial ends of the fixed rod are fixedly connected with the nail bin frame; the waist-shaped hole is obliquely arranged relative to the bottom end part of the pushing block deviating from the nail pushing block component.

Description

Nail pushing mechanism for anastomat

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to an anastomat is with pushing away nail mechanism.

Background

Various surgical linear cutting staplers are used for bare-handed anastomosis with needle wires instead of surgical stapling, and are widely used in organs and tissues such as digestive tract organs, respiratory tract organs, and genitourinary organs of the human body.

For staplers widely used in the prior art, for example, the firing mechanism disclosed in the patent publication of the firing mechanism of the surgical linear cutting stapler with the publication number CN103169515A includes a push button, a slider, a push rod, a push pin wedge and a cutting knife, so that the firing mechanism realizes the pushing operation of the push pin block and the cutting knife through the push button, firstly, for the push button, the force application requirement on the hand of the operator during the operation process is relatively large, and the pushing force of the thumb is generally limited, which makes the use process and the use process inconvenient. In addition, the structure is not separately arranged for the cutting knife and the nail pushing block, the nail pushing block and the cutting knife can be simultaneously triggered when the trigger mechanism is operated, the tissue suturing effect is not good probably due to the operation of suturing and cutting the edges, and bleeding phenomenon can even occur.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an anastomat is with pushing away nail mechanism to the solution realizes the technical problem of independent percussion control to pushing away the nail structure.

The utility model discloses an anastomat is with pushing away nail mechanism is realized like this:

a staple pushing mechanism for a stapler comprises: the nail magazine comprises a nail magazine frame, two groups of nail pushing block assemblies arranged in the nail magazine frame, a pair of pushing blocks suitable for respectively pushing the two groups of nail pushing block assemblies to move towards a nail groove direction so as to push out anastomotic nails from the nail groove, and a triggering assembly suitable for triggering the pushing blocks;

the firing assembly comprises waist-shaped hole units symmetrically arranged on the pair of pushing blocks, fixing rods simultaneously penetrating through the waist-shaped holes on the pair of pushing blocks, and power units suitable for abutting against to push the pushing blocks to slide along the fixing rods; wherein

The two axial ends of the fixed rod are fixedly connected with the nail bin frame; the waist-shaped hole is obliquely arranged relative to the bottom end part of the pushing block deviating from the nail pushing block component.

In a preferred embodiment of the present invention, the waist-shaped hole unit includes at least two waist-shaped holes formed on the pushing block, and the inclination directions and inclination angles of the at least two waist-shaped holes relative to the bottom end portion of the pushing block deviating from the nail pushing block assembly are the same;

the waist-shaped holes are formed in the two ends of the pushing block in the length direction.

In a preferred embodiment of the present invention, an included angle formed by the waist-shaped hole and a bottom end portion of the pushing block deviating from the nail pushing block assembly is 45 ° to 60 °.

In a preferred embodiment of the present invention, the power unit includes a thrust frame having one end abutting against the pushing block, and a handle connected to the thrust frame for pulling the thrust frame;

the thrust frame is hinged with the clamping hook through a hinge shaft, the hinge shaft is positioned between the end part of the thrust frame which is respectively abutted against the pushing block and the end part of the connecting handle, and the thrust frame is suitable for pushing the thrust frame under the action of the hinge shaft when the thrust frame is pulled through the handle.

In a preferred embodiment of the present invention, the power unit further comprises an elastic safety element clamped between the thrust frame and the clamping hook;

the elastic fuse comprises a base part and a pair of wings, wherein one end of each wing is integrally connected with the base part; a notch is formed between the pair of wings, and the notch extends along the length direction of the wings to form a notch at the other end of the pair of wings;

one of the pair of wings abuts the thrust frame and the other wing abuts the clamping hook.

In a preferred embodiment of the present invention, the side wall of the wing abutting against the thrust frame is provided with a first flat contact surface; and

and a second flat contact surface is arranged on the side wall of the wing abutted to the clamping hook.

In a preferred embodiment of the present invention, the nail pushing block assembly includes a plurality of nail pushing blocks arranged along a straight line;

the nail pushing block comprises two nail pushing parts which are arranged in a staggered mode and used for pushing the anastomotic nails, and a connecting part arranged between the two nail pushing parts; the pushing block is suitable for simultaneously abutting against the connecting parts corresponding to the plurality of nail pushing blocks included in the nail pushing block assembly.

In the preferred embodiment of the present invention, two spacing movable grooves for spacing a pair of the pushing blocks are disposed inside the magazine rack.

By adopting the technical scheme, the utility model discloses following beneficial effect has: the utility model discloses a stapler is with pushing away nail mechanism, the percussion subassembly of design is used for implementing alone the percussion to the anastomosis nail, concrete promotes the piece by the power pack drive and produces the removal trend for pushing away the horizontal direction of nail block subassembly, but because dead lever and waist shape hole are to the effect that promotes the piece, make to promote the piece around the dead lever along the orbit in waist shape hole turn into the driving force to the vertical direction who pushes away nail block subassembly with the horizontal direction's that appears under the power pack drive removal trend, and then make to push away the nail piece and release the anastomosis nail from the nail groove.

The utility model discloses a percussion subassembly is only used for percussion anastomotic nail alone, can not influence the percussion of the cutting knife of anastomat in the operation, therefore the operability is more nimble. Further, the utility model discloses a hand (hold) structure that firing assembly's power pack adopted for the human body can be directly for pressing from both sides the direct hand of tight hook and grip in order to hold tightly the hand (hold) when operating this power pack, makes the hand (hold) move towards pressing from both sides tight hook one side, thereby can make the thrust frame that links to each other with the hand (hold) can realize the impetus to promoting the piece, compares the thumb among the prior art and promotes, has obvious application of force light, convenient operation's excellence.

Furthermore, through the elasticity insurance piece that is equipped with between thrust frame and the tight hook of clamp for realize the switching to thrust frame motion control, owing to be formed with scarce groove between a pair of wing, when pulling thrust frame through the hand (hold), need exert certain pressure to the hand (hold) for lack groove between a pair of wing is tightened up gradually, and a pair of wing is close to gradually promptly, just can make thrust frame produce the promotion effect to pushing the piece. Under general conditions, when not needing to make the thrust frame move, even the hand touch the hand (hold), do not have under the prerequisite of certain pressure, the thrust frame can not produce the promotion effect to promoting the piece, consequently can effectively avoid the problem of maloperation. And the elasticity insurance piece utilizes scarce groove to realize switching the mode of hand (hold) to the deformation that utilizes the elasticity insurance piece, and the operation is swift high-efficient, need not constantly dismantle and install the elasticity insurance piece, can avoid the elasticity insurance piece to drop and the problem of forgetting to produce.

Drawings

Fig. 1 is a schematic view of the overall structure of the nail pushing mechanism for the stapler of the present invention;

fig. 2 is a schematic view of a partial structure of a nail pushing mechanism for an anastomat according to the present invention;

fig. 3 is a schematic view of a partial structure of a nail pushing mechanism for an anastomat according to the present invention;

fig. 4 is a schematic structural view of a limit movable groove of the nail pushing mechanism for the anastomat of the utility model;

fig. 5 is a schematic view of the overall structure of the nail pushing block of the nail pushing mechanism for the stapler according to the present invention;

fig. 6 is a schematic view of the overall structure of the pushing block of the staple pushing mechanism for the stapler of the present invention.

In the figure: the nail magazine comprises a nail magazine frame 101, a nail pushing part 105, a connecting part 106, a pushing block 107, a limiting movable groove 108, a spacing block 109, a fixing rod 110, a kidney-shaped hole 112, an inner frame body 113, an outer frame body 115, a thrust frame 116, a handle 117, an anti-skidding sleeve 118, a clamping hook 119, a hinge shaft 120, a base 121, a wing 122, a notch 123, a notch 124, a first flat contact surface 125 and a second flat contact surface 126.

Detailed Description

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.

Example 1:

referring to fig. 1 to 6, the present embodiment provides a staple pushing mechanism for a stapler, including: the staple cartridge comprises a staple cartridge frame 101, two groups of staple pushing block assemblies arranged in the staple cartridge frame 101, a pair of pushing blocks 107 suitable for respectively pushing the two groups of staple pushing block assemblies to move towards the direction of a staple groove so as to push out anastomotic staples from the staple groove, and a firing assembly suitable for firing the pushing blocks 107. The two groups of nail pushing block assemblies are conventional technical means, and are not described in detail in this embodiment. Since there are two sets of staple pusher block assemblies, correspondingly, the pushing blocks 107 are also provided as a pair, so that one pushing block 107 of the pair of pushing blocks 107 pushes one set of staple pusher block assemblies, and the other pushing block 107 pushes the other set of staple pusher block assemblies.

Specifically, the nail pushing block assembly comprises a plurality of nail pushing blocks which are arranged along a straight line; the staple pushing block comprises two staple pushing parts 105 which are arranged in a staggered mode and used for pushing staples, and a connecting part 106 arranged between the two staple pushing parts 105; the pushing block 107 is adapted to simultaneously abut against the connecting portions 106 corresponding to the plurality of staple pushing blocks included in the staple pushing block assembly.

In order to limit the movement track of the pushing block 107 in the process of pushing the staple pushing block assembly and ensure the staple pushing effect of the pushing block 107 on the staple pushing block assembly, two limiting movable grooves 108 for limiting a pair of pushing blocks 107 are arranged inside the staple cartridge frame 101. The stopper groove 108 is formed by an inner spacer 109 integrally formed with the cartridge holder 101.

The firing assembly comprises a pair of pushing blocks 107, a pair of fixing rods 110 and a power unit, wherein the pair of pushing blocks 107 are symmetrically provided with waist-shaped holes 112, the fixing rods 110 simultaneously penetrate through the waist-shaped holes 112 on the pair of pushing blocks 107, and the power unit is suitable for abutting to push the pushing blocks 107 to slide along the fixing rods 110; wherein, the two axial ends of the fixed rod 110 are fixedly connected with the nail bin frame 101; the slotted hole 112 is obliquely arranged relative to the bottom end of the pusher block 107 facing away from the staple block assembly. In order to ensure the matching effect of the fixing rod 110 and the waist-shaped hole 112, the width of the hole of the waist-shaped hole 112 in this embodiment is matched with the outer diameter of the fixing rod 110, and the length of the waist-shaped hole 112 is designed according to the distance that the staple pushing block assembly needs to move when pushing a staple out of the staple slot, here, the power unit drives the pushing block 107 to generate a moving trend in the horizontal direction relative to the staple pushing block assembly, but due to the action of the fixing rod 110 and the waist-shaped hole 112 on the pushing block 107, the pushing block 107 converts the moving trend in the horizontal direction, which occurs under the driving of the power unit, into a pushing force in the vertical direction relative to the staple pushing block assembly around the fixing rod 110 along the track of the waist-shaped hole 112, so that the staple pushing block pushes the staple out of the staple slot.

It should be noted that, the magazine rack 101 of the present embodiment includes an inner rack 113 and an outer rack 115, which are used cooperatively, wherein the staple pushing block assembly and the pushing block 107 are disposed on the inner rack 113, and the fixing rod 110 penetrates through the inner rack 113 to be fixedly connected with the outer rack 115, so as to fix the axis of the fixing rod 110 and prevent the fixing rod 110 from being displaced.

In order to improve the stability of the moving state of the pushing block 107 under the action of the power unit, the waist-shaped hole 112 unit comprises at least two waist-shaped holes 112 formed in the pushing block 107, and the inclination directions and the inclination angles of the at least two waist-shaped holes 112 relative to the bottom end part of the pushing block 107 departing from the staple pushing block assembly are the same; the kidney-shaped holes 112 are provided at both ends of the pushing block 107 in the length direction. The drawings of the present embodiment only take two waist-shaped holes 112 as an example. Here, optionally, the angle formed by the kidney-shaped hole 112 and the bottom end of the pushing block 107 departing from the staple pushing block assembly is 45 ° to 60 °. It is easily understood by those skilled in the art that the difference of the included angle formed by the kidney-shaped hole 112 and the bottom end portion of the pushing block 107 away from the staple pushing block assembly affects the pushing distance of the pushing block 107 to the staple pushing block assembly, and therefore, the range of the included angle here is calculated according to the moving distance of the staples of staplers with different specifications.

More specifically, the power unit adopted in the present embodiment includes a thrust frame 116 having one end abutting against the pushing block 107, and a handle 117 connected to the thrust frame 116 to pull the thrust frame 116; the handle 117 may be an integral structure with the thrust frame 116 or a separate structure, and this embodiment is only an example of an integral structure, and the anti-slip cover 118 may be sleeved on the outer side of the handle 117, so as to improve comfort when the handle 117 is held by the hand.

The thrust frame 116 is operated in such a way that the thrust frame 116 is connected to the clamping hook 119 by means of a hinge 120, the hinge 120 being located between the end of the thrust frame 116 abutting against the pusher 107 and the end connected to the handle 117, respectively, and being adapted to allow the thrust frame 116 to be pushed by means of the hinge 120 when the thrust frame 116 is pulled by the handle 117. The thrust bracket 116 in particular rotates about the hinge shaft 120, so that the portion abutting against the pushing block 107 produces an abutting pushing action against the pushing block 107.

Example 2:

referring to fig. 2 to 4, on the basis of the staple pushing mechanism for a stapler in embodiment 1, the power unit of the staple pushing mechanism for a stapler in this embodiment further includes an elastic safety element.

Because the handle 117 of the present embodiment generates the pinching force for the handle 117 by holding the handle 117 with a hand, for the operation process, the possibility that the handle 117 may be operated by mistake by the hand cannot be avoided, and based on the consideration of the above problem, the staggered firing for the pushing block 107 after the handle 117 is touched by mistake is avoided, the present embodiment designs a firing control structure for switching the pushing block 107, and specifically includes an elastic safety member clamped between the thrust frame 116 and the clamping hook 119.

Specifically, the elastic fuse includes a base portion 121 and a pair of wings 122 integrally connected at one end to the base portion 121; a notch 123 is formed between the pair of wings 122, and the notch 123 extends along the longitudinal direction of the wings 122 to form a notch 124 at the other end of the pair of wings 122; one wing 122 of the pair of wings 122 abuts thrust frame 116, and the other wing 122 abuts clamping hook 119. The elastic safety element is made of a metal material with a certain rigidity, the "elasticity" of the elastic safety element is realized through the notches 123 in the pair of wings 122, in a normal state, under the condition that no force is applied to the handle 117, the pair of wings 122 of the elastic safety element respectively abut against the thrust frame 116 and the clamping hook 119, and when the thrust frame 116 is pulled through the handle 117, a certain pressure needs to be applied to the handle 117, so that the notches 123 between the pair of wings 122 are gradually tightened, that is, the pair of wings 122 gradually approach, and the thrust frame 116 can generate a pushing effect on the pushing block 107. In general, when the thrust frame 116 does not need to be moved, even if the hand touches the handle 117, the thrust frame 116 does not generate a pushing effect on the pushing block 107 on the premise of no pressure, so that the problem of misoperation can be effectively avoided. And the elastic safety piece utilizes the notch 123 to realize that the operating mode of the handle 117 is switched by utilizing the deformation of the elastic safety piece, the operation is fast and efficient, the elastic safety piece does not need to be continuously disassembled and assembled, and the problems that the elastic safety piece falls off and is forgotten can be avoided.

In order to reduce the relative sliding between the elastic safety piece and the handle 117 in the process of pinching the handle 117 and influence the pinching effect of the handle 117, the side wall of the wing 122 abutting against the thrust frame 116 is provided with a first flat contact 125 surface; and the side wall of wing 122 abutting clamping hook 119 is provided with a second flat contact surface 126. The contact effect of the first flat contact surface 125 and the second flat contact surface 126 is more stable and reliable than that of a circular arc contact surface.

The above embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above embodiments are only examples of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the products of the present invention are used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the mechanism or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.

Claims

1. A staple pushing mechanism for a stapler is characterized by comprising: the nail magazine comprises a nail magazine frame, two groups of nail pushing block assemblies arranged in the nail magazine frame, a pair of pushing blocks suitable for respectively pushing the two groups of nail pushing block assemblies to move towards a nail groove direction so as to push out anastomotic nails from the nail groove, and a triggering assembly suitable for triggering the pushing blocks;

2. The staple pushing mechanism for the anastomat as claimed in claim 1, wherein the waist-shaped hole unit comprises at least two waist-shaped holes formed on the pushing block, and the at least two waist-shaped holes have the same inclination direction and the same inclination angle relative to the bottom end part of the pushing block, which is far away from the staple pushing block assembly;

the waist-shaped holes are formed at two ends of the pushing block in the length direction.

3. The staple pushing mechanism for the anastomat according to any one of claims 1 or 2, wherein an included angle formed by the kidney-shaped hole and the bottom end part of the pushing block, which is far away from the staple pushing block assembly, is 45-60 degrees.

4. The staple pushing mechanism for the anastomat according to claim 1, wherein the power unit comprises a thrust frame with one end abutting against the pushing block, and a handle connected with the thrust frame to pull the thrust frame;

5. The staple pushing mechanism for the anastomat according to claim 4, wherein the power unit further comprises an elastic safety piece clamped between the thrust frame and the clamping hook;

6. The nail pushing mechanism for the anastomat according to claim 5, wherein the side wall of the wing abutting against the thrust frame is provided with a first flat contact surface; and

7. The staple pushing mechanism for the anastomat according to claim 1, wherein the staple pushing block assembly comprises a plurality of staple pushing blocks arranged in a straight line;

8. The nail pushing mechanism for the anastomat according to claim 1, wherein two limiting movable grooves for limiting a pair of the pushing blocks are arranged inside the nail bin frame.