CN212140510U

CN212140510U - Circumcision anastomat

Info

Publication number: CN212140510U
Application number: CN201921689794.1U
Authority: CN
Inventors: 傅开芬
Original assignee: Suzhou Tianchen International Medical Technology Co Ltd
Current assignee: Suzhou Tianchen International Medical Technology Co Ltd
Priority date: 2017-12-15
Filing date: 2017-12-15
Publication date: 2020-12-15
Anticipated expiration: 2027-12-15

Abstract

The utility model discloses a circumcision anastomat, which comprises an anastomat body and a glans penis seat component which can move towards the near end or the far end of the circumcision anastomat relative to the anastomat body, wherein the anastomat body comprises a shell and at least one firing handle rotationally connected with the shell; the glans penis seat assembly comprises a glans penis seat and a screw rod positioned at the near end of the glans penis seat, and the glans penis seat is connected with the anastomat body through the screw rod; wherein, the anastomat body still including being located the inside position mechanism that ends of casing, end position mechanism including be located the through-hole that ends the middle part of position mechanism and be located the peripheral connecting portion that ends the position mechanism, end the position portion, the lead screw movably wears to locate in the through-hole, connecting portion and casing reciprocal anchorage, end the position portion and be located the rotation route of percussion handle. The utility model discloses a setting up of ending the position mechanism can provide clear tactile feedback for medical personnel to remind medical personnel to have already fired in place.

Description

Circumcision anastomat

Technical Field

The utility model relates to the field of medical equipment, especially, relate to a circumcision anastomat.

Background

The prepuce is too long and phimosis is a common reproduction problem for men. With the continuous improvement of living standard and health consciousness of people, higher requirements are put forward on self reproductive health. The redundant prepuce is easy to store dirt and dirt, and if the prepuce is not cleaned in time, the inflammation of glans prepuce and the penile inflammation can be caused, the normal couple life is influenced, the chances of the sexual complicated with the cervicitis and the cervical cancer are increased, and various problems such as the penile cancer, the sterility and the premature ejaculation can be caused. Circumcision is an effective method for treating redundant prepuce and phimosis. A great deal of research in the last decade shows that the male circumcision has great significance for reducing the skin infection and the urinary tract infection of the male penis, reducing the incidence rate of balanitis and the like of the adult male, reducing the incidence rate of vaginal infection and cervical cancer of a partner thereof, and even preventing sexually transmitted diseases including AIDS, tumors of a reproductive system and the like.

Currently, manual circumcision and circumcision anastomat methods are generally adopted for treating the redundant prepuce. The manual circumcision adopts manual cutting and suturing, although a plurality of ways exist, the postoperation incisal margin condition completely depends on the level and skill of an operator, the prepuce incision is irregular and not beautiful, the requirement of the operator cannot be met, and the operation time is long. The existing circumcision anastomat has the characteristics of smooth incision, short operation time and simple and convenient operation, but still has certain defects.

The existing circumcision anastomat has the phenomenon of over-percussion in use, excessively squeezes tissues and is not beneficial to postoperative recovery and growth. Meanwhile, medical care personnel do not have obvious in-place prompt in the triggering process, the triggering state is soft and continuous, and the triggering state is not beneficial to the judgment of the medical care personnel on the basis of tactile feedback whether the triggering is in place or not.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a circumcision anastomat.

In order to realize one of the above objects of the present invention, an embodiment of the present invention provides a circumcision anastomat, including:

the anastomat body comprises a shell and at least one firing handle which is rotatably connected with the shell;

the glans-penis seat assembly can move towards the near end or the far end of the circumcision anastomat relative to the anastomat body, the glans-penis seat assembly comprises a glans-penis seat and a screw rod located at the near end of the glans-penis seat, and the glans-penis seat is connected with the anastomat body through the screw rod;

the anastomat body further comprises a stopping mechanism located inside the shell, the stopping mechanism comprises a through hole located in the middle of the stopping mechanism, a connecting portion and a stopping portion located on the periphery of the stopping mechanism, the lead screw movably penetrates through the through hole, the connecting portion and the shell are fixed with each other, and the stopping portion is located on a rotating path of the percussion handle.

As a further improvement of an embodiment of the present invention, the housing is close to one side of the stop mechanism is provided with a limit groove, and the connecting portion is located in the limit groove.

As a further improvement of an embodiment of the present invention, the limiting groove includes a limiting portion, the limiting portion and the connecting portion cooperate with each other to limit the position stopping mechanism to follow the axial movement and the limitation of the circumcision anastomat the position stopping mechanism is relative the lead screw rotates.

As a further improvement of an embodiment of the present invention, the housing includes a first housing and a second housing which are arranged relatively, the first housing is provided with a first limit groove, the second housing is provided with a second limit groove, the stop mechanism includes two connecting portions which are arranged relatively, and the two connecting portions are respectively located in the first limit groove and the second limit groove.

As an embodiment of the present invention, in a further improvement of the present invention, the connecting portion is kept away from one side of the through hole includes a first arc surface, the inner surface of the limiting groove includes a second arc surface, the first arc surface and the second arc surface are matched with each other.

As a further improvement of an embodiment of the present invention, the stopping portion is far away from one side of the through hole to a stopping surface, the trigger handle is close to one side of the stopping mechanism for supporting the wall, and the stopping surface is located on the motion path of the supporting wall.

As a further improvement of an embodiment of the present invention, the stop surface and the support wall are both flat surfaces.

As an embodiment of the utility model is further improved, the anastomat body including the symmetry set up in two percussion handles of casing both sides, only position mechanism including two that the symmetry set up end position portion, each end position portion and lie in the rotation route of the percussion handle that corresponds.

As a further improvement of an embodiment of the present invention, the stopping mechanism includes two connecting portions which are oppositely disposed, and the two stopping portions and the two connecting portions are disposed in a staggered manner.

As an embodiment of the utility model provides a further improvement, be equipped with the percussion handle mounting hole on the casing, the percussion is equipped with the opening on the handle, the mounting hole with through first round pin hub connection between the opening.

Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model discloses an embodiment can provide clear tactile feedback for medical personnel through the setting of ending the position mechanism to remind medical personnel to have already fired in place.

Drawings

Fig. 1 is a perspective view of a circumcision stapler according to an embodiment of the present invention;

fig. 2 is an exploded view of a circumcision stapler according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a circumcision stapler according to an embodiment of the present invention;

FIG. 4 is a schematic view of the triggered handle of the circumcision stapler according to an embodiment of the present invention (with part of the housing omitted);

FIG. 5 is an unfired cross-sectional view of a fired handle of a circumcision stapler in accordance with an embodiment of the present invention;

FIG. 6 is a schematic view of the circumcision stapler's firing handle (with part of the housing omitted) according to an embodiment of the present invention;

FIG. 7 is a cross-sectional view of the firing handle of the circumcision stapler in accordance with an embodiment of the present invention;

fig. 8 is a perspective view of a stop mechanism according to a first embodiment of the present invention;

fig. 9 is a perspective view of a stop mechanism according to a second embodiment of the present invention;

fig. 10 is a schematic view (partial structure is omitted) showing the stop mechanism in the first state and the trigger handle abutting against the stop mechanism according to the second embodiment of the present invention;

fig. 11 is a schematic view (partial structure is omitted) showing the stop mechanism in the second state and the trigger handle abutting against the stop mechanism according to the second embodiment of the present invention;

fig. 12 is a perspective view of a stop mechanism according to a third embodiment of the present invention;

fig. 13 is a schematic view (partial structure is omitted) showing the stop mechanism in the first state and the trigger handle abutting against the stop mechanism according to the third embodiment of the present invention;

fig. 14 is a schematic view (partial structure is omitted) showing the stop mechanism in the second state and the trigger handle abutting against the stop mechanism according to the third embodiment of the present invention;

FIG. 15 is a partial sectional side view of an unfired trigger handle of a circumcision stapler in accordance with an embodiment of the present invention;

FIG. 16 is a schematic view of a staple cartridge assembly according to an embodiment of the present invention;

fig. 17 is a schematic view of a first housing according to an embodiment of the present invention;

fig. 18 is a schematic view of a second housing according to an embodiment of the present invention;

fig. 19 is a sectional view of a circumcision stapler according to an embodiment of the present invention from a bottom view;

fig. 20 is a schematic view of a glans penis receptacle assembly according to an embodiment of the present invention;

FIG. 21 is a schematic view of an anvil and knife anvil according to an embodiment of the present invention;

fig. 22 is a cross-sectional view of a glans penis receptacle assembly according to an embodiment of the present invention;

FIG. 23 is an enlarged view of a portion of FIG. 22;

FIG. 24 is a diagrammatic view of an anvil according to an embodiment of the present invention;

FIG. 25 is a cross-sectional view of the engagement of the cartridge and lead screw in accordance with an embodiment of the present invention;

fig. 26 is a schematic view of a lower mold according to an embodiment of the present invention;

fig. 27 is an assembly view of an upper mold and a lower mold according to an embodiment of the present invention;

fig. 28 is a step diagram of a method for forming a balanus assembly according to an embodiment of the present invention;

fig. 29 is a diagram illustrating the steps of a circumcision stapler forming method according to an embodiment of the present invention.

Detailed Description

The present invention will be described in detail below with reference to specific embodiments shown in the drawings. However, these embodiments are not intended to limit the present invention, and structural, methodical, or functional changes that may be made by one of ordinary skill in the art based on these embodiments are all included in the scope of the present invention.

In the various drawings of the present invention, certain dimensions of structures or portions may be exaggerated relative to other structures or portions for ease of illustration, and thus, are used only to illustrate the basic structure of the subject matter of the present invention.

Also, terms used herein such as "upper," "above," "lower," "below," and the like, denote relative spatial positions of one element or feature with respect to another element or feature as illustrated in the figures for ease of description. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 1 to 3, in one embodiment of the present invention, a circumcision stapler 300 is used to apply a plurality of staples to a tissue of a human body (herein, foreskin) while cutting an excess tissue accordingly.

The circumcision anastomat 300 comprises an anastomat body 100 and a glans penis base assembly 200 which are matched with each other.

Stapler body 100 includes a housing 10, at least one firing handle 11 rotatably coupled to housing 10, and a cartridge assembly 12 coupled to housing 10.

It should be noted that the ejector pin plate 123 and the ejector pin base 125 may be integrally connected.

The glans-holder assembly 200 is located at the distal end of the stapler body 100, and the glans-holder assembly 200 is movable relative to the stapler body 100 towards the proximal or distal end of the circumcision stapler 300.

The staple cartridge assembly 12 comprises a staple cartridge 121, a staple barrel 122, a staple pushing plate 123, an annular knife 124 and a staple pushing seat 125. Here, the annular knife 124 is a hollow ring, and the annular knife 124 may be a circular knife or a nearly circular knife, for example, an elliptical annular knife.

The staple cartridge 122 is hollow and annular, the staple cartridge 122 is connected to the distal end of the housing 10 through a fixing ring (not shown), the staple cartridge 122 is detachably connected to the staple cartridge 121, and the staple cartridge 121 is an annular staple cartridge. Likewise, the staple cartridge 122 may be a circular staple cartridge, an elliptical staple cartridge, or the like, and the staple cartridge 121 may be a circular staple cartridge, an elliptical staple cartridge, or the like.

The staple cartridge 122 is provided with a staple pushing sheet 123 and a staple chamber 121 located at the distal end of the staple pushing sheet 123, the staple pushing sheet 123 is further provided with an annular knife 124, when the annular knife 124 is assembled to the staple pushing sheet 123, the distal end face of the annular knife 124 protrudes out of the distal end face of the staple pushing sheet 123, the staple chamber 121 is provided with a plurality of staple holes (not marked) matched with the staple pushing sheet 123 on the end face thereof, and a plurality of staples (not marked) are located at the staple holes.

The proximal end of the staple pushing sheet 123 is connected with a staple pushing seat 125, one end of the staple pushing seat 125, which is far away from the staple pushing sheet 123, abuts against the firing handle 11, and the firing handle 11 drives the staple pushing sheet 123 to move towards the distal end of the circumcision stapler 300 through the staple pushing seat 125 to realize the cutting and suturing operation.

The balanus seat assembly 200 comprises a balanus seat 20, a screw rod 21 positioned at the proximal end of the balanus seat 20, a nail anvil 22 and a knife anvil 23, wherein the balanus seat 20 is connected with the anastomat body 100 through the screw rod 21.

The glans base 20 includes a glans cavity 201 for receiving the glans and an annular rim 202 disposed around the opening of the glans cavity 201.

Here, the annular rim 202 may also be an annular cavity.

The anvil 22 and the knife anvil 23 are located on the proximal surface of the annular rim 202.

The anvil 22 is an annular anvil, and the knife anvil 23 is an annular knife anvil. Likewise, the anvil 22 may be a circular anvil, an elliptical anvil, or the like, and the knife anvil 23 may be a circular knife anvil, an elliptical knife anvil, or the like.

The stapler body further comprises an adjustment knob 13 connected to the proximal end of the housing 10.

The adjusting knob 13 is movably connected to the near end of a screw rod 21 penetrating through the shell 10, and the adjusting knob 13 drives the screw rod 21 to reciprocate in the axial direction of the circumcision anastomat through threads arranged in the adjusting knob 13.

The distal end of the screw rod 21 may be directly connected to the glans base 20, or the proximal end of the glans base 20 is provided with an anvil shaft 203, and the distal end of the screw rod 21 and the anvil shaft 203 are fixed to each other, so that the adjustment knob 13 is rotated clockwise or counterclockwise to drive the glans base 20 to move close to or away from the housing 10, thereby enabling the anvil 22, the anvil 23 and the nail bin 121 to clamp or loosen a target tissue.

The housing 10 includes a first housing 101 and a second housing 102 disposed opposite to each other, and the first housing 101 is focused on the following description, and the first housing 101 is referred to for the description of the second housing 102.

The distal end of the first housing 101 is provided with a housing connecting portion 1011, so that the housing 10 can be connected to the nail barrel 122 through the housing connecting portion 1011.

A firing handle mounting hole 1012 is formed in the first housing 101, the firing handle mounting hole 1012 in the first housing 101 is connected to the opening 111 in the firing handle 11 through a first pin 30, so that the firing handle 11 rotates relative to the housing 10 through the cooperation of the opening 111 and the first pin 30.

In this embodiment, the stapler body 100 includes two firing handles 11 symmetrically disposed on two sides of the housing 10, and distal ends of the two firing handles 11 are respectively abutted against a proximal end of the staple pushing seat 125.

The stapler body 100 further includes a safety mechanism 14 cooperating with the staple pusher 125, and preferably, when the circumcision stapler 300 is in the initial state, the safety mechanism 14 is located between the housing 10 and the staple pusher 125 to limit the axial movement of the staple pusher 125 along the circumcision stapler.

The following briefly introduces the working flow of the circumcision anastomat 300 according to an embodiment of the present invention:

in this embodiment, the glans 20 is detachably connected to the distal end of the housing 10, and when the circumcision stapler 300 is in the initial state, the glans 20 is in the openable state, and the operated target tissue (foreskin) can be placed between the nail bin 121 and the nail anvil 22 and the knife anvil 23 after being fixed on the glans 20.

When the circumcision anastomat 300 is switched from the initial state to the closed state, the adjusting knob 13 is rotated, the screw rod 21 moves towards the near end of the circumcision anastomat 300 under the action of the adjusting knob 13, the screw rod 21 drives the glans base 20 to move close to the shell 10 until the anvil 22, the knife anvil 23 and the nail bin 121 are closed, target physiological tissues can be clamped between the nail anvil 22, the knife anvil 23 and the nail bin 121, and the nail pushing sheet 123 and the annular knife 124 do not move and are still located at the near end of the nail bin assembly 12.

When the circumcision anastomat 300 is switched from a closed state to a fired state, the nail anvil 22, the knife anvil 23 and the nail bin 121 are still kept closed, the safety mechanism 14 is pulled out, the firing handle 11 is pressed to drive the nail pushing seat 125 to move towards the far end of the circumcision anastomat 300, the nail pushing seat 125 drives the nail pushing sheet 123 and the annular knife 124 to move from the near end to the far end of the nail bin assembly 12, and the annular knife 124 and the nail pushing sheet 123 cut and sew clamped target physiological tissues and can be limited at the far end of the nail bin assembly 12 to stop moving.

When the circumcision anastomat 300 is switched from the percussion state to the percussion completion state, the percussion handle 11 is released, the adjusting knob 13 is rotated in the opposite direction, the screw rod 21 drives the balanus seat 20 to move away from the shell 10, the nail pushing sheet 123 and the annular knife 124 return to the initial position, the nail anvil 22, the knife anvil 23 and the nail bin 121 are opened, and at the moment, the cut and sutured target physiological tissues can be separated from the balanus seat 20.

In the present embodiment, referring to fig. 4 to 7, the stapler body 100 further includes a stop mechanism 15, and when the firing handle 11 rotates and abuts against the stop mechanism 15, the stop mechanism 15 limits the firing handle 11 from continuing to rotate in a direction approaching the housing 10.

Here, the stop mechanism 15 is provided to provide clear tactile feedback to the healthcare worker to alert the healthcare worker that the firing has been in place.

In the present embodiment, the stop mechanism 15 is located inside the housing 10, but of course, in other embodiments, the stop mechanism 15 may be located at other positions, for example, the stop mechanism 15 is located at the edge of the housing 10.

The stop mechanism 15 of the present invention may include various embodiments, and three embodiments of the stop mechanism 15 are described below.

Referring to fig. 8, in the first embodiment of the present invention, the stopping mechanism 15 is sleeved on the screw rod 21 through a through hole 151 located thereon, and the screw rod 21 can move relative to the through hole 151.

The stop mechanism 15 further includes a connecting portion 152 and a stop portion 153, the connecting portion 152 and the housing 10 are fixed to each other, and the stop portion 153 interacts with the firing handle 11.

Specifically, the stop mechanism 15 includes two stop portions 153 and two connecting portions 152, which are disposed oppositely, that is, the two stop portions 153 and the two connecting portions 152 are disposed alternately.

The housing 10 is provided with a limiting groove 103 for accommodating the connecting portion 152, the limiting groove 103 limits the axial movement of the stopping mechanism 15 along the circumcision stapler, and here, the first housing 101 and the second housing 102 are both provided with a limiting groove 103 for accommodating the two connecting portions 152.

It will be appreciated that the limit slot 103 also limits the rotation of the stop mechanism 15 relative to the lead screw 21.

One side of the connecting portion 152 close to the housing 10 has an arc surface 1521, and the limiting groove 103 and the arc surface 1521 are matched with each other, that is, the inner surface of the limiting groove 103 is also arc-shaped.

The firing handle 11 comprises a supporting wall 112, the supporting wall 112 is located on one side of the firing handle 11 close to the screw rod 21, and the supporting wall 112 is a plane.

The stop portion 153 includes a stop surface 1531, the stop surface 1531 is located on a side of the stop mechanism 15 away from the screw 21, and the stop surface 1531 is a plane.

When the trigger handle 11 abuts against the stop mechanism 15, the abutting wall 112 and the stop surface 1531 form surface contact, so as to realize stable matching of the trigger handle 11 and the stop mechanism 15.

Fig. 9 to 11 are schematic views of a second embodiment of the present invention.

For convenience of explanation, the components of the present embodiment similar to those of the first embodiment are given the same names and are distinguished by different numbers.

In this embodiment, referring to fig. 10, when the stopping mechanism 15a is in the first state and the triggering handle 11a rotates and abuts against the stopping mechanism 15a, an included angle between the triggering handle 11a and the circumcision stapler in the axial direction is a first angle α, referring to fig. 11, when the stopping mechanism 15a is in the second state and the triggering handle 11a rotates and abuts against the stopping mechanism 15a, an included angle between the triggering handle 11a and the circumcision stapler in the axial direction is a second angle β, and the first angle α is different from the second angle β.

Here, the first state and the second state may refer to a position, a placement angle, a form, and the like of the stopper mechanism 15 a.

The stop mechanism 15a at least includes a first stop portion 153a and a second stop portion 153a ', the first stop portion 153a is located on the rotation path of the firing handle 11a when the stop mechanism 15a is in the first state, and the second stop portion 153 a' is located on the rotation path of the firing handle 11a when the stop mechanism 15a is in the second state.

Here, the stop mechanism 15a may further include a third stop, a fourth stop, and so on, so that the included angle between the firing handle 11a and the circumcision stapler axial direction may have various angles.

The advantages of such a design are: different stopping parts can be selected to interact with the triggering handle 11a, so that the triggering handle 11a drives the nail pushing piece 123a to move for different distances towards the far end of the circumcision anastomat, different suturing nail forming heights are further realized, tissues with different thicknesses are adapted, and the phenomenon that the suturing nails are excessively triggered to excessively press the tissues or the suturing nails are insufficiently triggered to fail to achieve the due hemostatic effect is avoided.

In the present embodiment, the stop mechanism 15a at least includes a first stop group (not labeled) and a second stop group (not labeled), the first stop group includes two first stop portions 153a symmetrically disposed, and the second stop group includes two second stop portions 153 a' symmetrically disposed to correspond to the two firing handles 11a symmetrically disposed.

When the stop mechanism 15a is in the first state, the first stop group is located on the rotation paths of the two firing handles 11a, and when the stop mechanism 15a is in the second state, the second stop group is located on the rotation paths of the two firing handles 11 a.

In the present embodiment, the stop mechanism 15a is sleeved at the screw rod 21a through hole 151a located thereon, and the screw rod 21a can move relative to the through hole 151 a.

The housing 10a is provided with a limit groove 103a for accommodating the stop mechanism 15 a.

Here, the limiting groove 103a limits the axial movement of the stopping mechanism 15a along the circumcision stapler, and the stopping mechanism 15a can rotate in the limiting groove 103a to change between the first state and the second state.

That is, the position-stopping mechanism 15a is not moved in the axial direction of the circumcision anastomat, and the position-stopping mechanism 15a only rotates in place relative to the screw rod 21a to realize the switching of the position-stopping mechanism 15a between the first position-stopping group and the second position-stopping group.

Fig. 12 to 14 are schematic views of a third embodiment of the present invention.

In this embodiment, the limiting groove 103b has a movable space in the axial direction of the circumcision stapler, and when the stopping mechanism 15b moves in the movable space, the stopping mechanism 15b is changed from the first state to the second state.

Specifically, the position stopping mechanism 15b is in threaded connection (not labeled) with the screw rod 21b, when the balanus assembly 200 moves close to the stapler body 100, the screw rod 21b drives the position stopping mechanism 15b to move together towards the proximal end of the circumcision stapler 300, and when the balanus assembly 200 moves to the proper position and the firing handle 11b starts to be operated, the position stopping mechanism 15b can be switched between the first state and the second state by rotating the position stopping mechanism 15b relative to the screw rod 21 b.

Of course, the stopping mechanism 15b may not be connected to the screw rod 21b, that is, the screw rod 21b may move axially along the circumcision stapler relative to the stopping mechanism 15b, and the stopping mechanism 15b may move axially along the circumcision stapler in the limiting groove 103 b.

In the present embodiment, the stop mechanism 15b may include only one kind of stop portion 153b, that is, the distance from the edge of each stop portion 153b to the central through hole 151b is equal.

Of course, the stopping mechanism 15b may also include various stopping portions, for example, in the second embodiment, and the stopping mechanism 15b is matched with different positions in the axial direction of the circumcision anastomat, so as to form different included angles between the firing handle 11b and the axial direction of the circumcision anastomat.

In a specific example of this embodiment, the firing handle 11b at least includes a first supporting wall 112b and a second supporting wall 112b ', referring to fig. 13, when the stopping mechanism 15b is in the first state, the stopping mechanism 15b is located on a moving path of the first supporting wall 112b, at this time, an included angle between the firing handle 11a and the circumcision stapler in the axial direction is a first angle α, referring to fig. 14, when the stopping mechanism 15b is in the second state, the stopping mechanism 15b is located on a moving path of the second supporting wall 112 b', at this time, an included angle between the firing handle 11a and the circumcision stapler in the axial direction is a second angle β, and the first angle α is different from the second angle β.

It can be understood that in the above-described embodiment, the axial state change or the radial state change of the stop mechanism 15 is finally converted into the different included angles between the firing handle 11 and the circumcision anastomat in the axial direction when firing, so as to realize the different forming heights of the staples when firing, thereby adapting to tissues with different thicknesses.

In this embodiment, referring to fig. 15 and 16, the stapler body 100 further includes an elastic member 16, and the elastic member 16 is located in the cartridge assembly 12.

One end of the cartridge component 12 abuts against the firing handle 11, and when the circumcision stapler 300 is in an initial state, the elastic member 16 acts on the firing handle 11 through the cartridge component 12 so that the firing handle 11 keeps a tendency of expanding outwards.

Here, when the circumcision stapler 300 is in the initial state, the opening angle of the firing handle 11 is determined by the elastic member 16, which provides a better experience for the medical staff.

Specifically, one end of the elastic member 16 is connected to the staple cartridge 122, the other end of the elastic member is connected to the staple pushing seat 125, and one end of the staple pushing seat 125 far away from the elastic member 16 abuts against the firing handle 11.

The elastic element 16 is a spring 16, and the spring 16 is sleeved on the screw rod 21.

The proximal end of the staple pusher holder 125 has a first surface 1251, the distal end of the firing handle 11 has a second surface 114 matching with the first surface 1251, and when the circumcision stapler 300 is in the initial state, the first surface 1251 and the second surface 114 are in surface contact, so that the firing handle 11 and the staple pusher holder 125 are stably matched.

The anastomat body 100 further comprises a second pin shaft 40 connected with the shell 10, and a stroke groove 113 matched with the second pin shaft 40 is formed in the firing handle 11.

When the circumcision anastomat 300 is in the initial state, the second pin shaft 40 is positioned at the farthest end of the stroke groove 113, so that the opening angle of the firing handle 11 in the initial state is relatively fixed; when the circumcision anastomat 300 is in a triggering process, the triggering handle 11 is close to the shell 10 to rotate, the second pin shaft 40 moves towards the near end of the stroke groove 113, meanwhile, the triggering handle 11 drives the nail pushing seat 125 to move towards the far end of the circumcision anastomat 300, the nail pushing seat 125 acts on the elastic piece 16 to compress the elastic piece 16, the triggering handle 11 rotates to abut against the stop mechanism 15 to stop rotating, and at the moment, the nail pushing seat 125 drives the nail pushing piece 123 and the annular cutter 124 to realize cutting and suturing operations; when the circumcision anastomat 300 is completely triggered, the triggering handle 11 is released, and the elastic piece 16 drives the nail pushing seat 125, the nail pushing sheet 123 and the annular cutter 124 to reset.

In the present embodiment, referring to fig. 16 to 19, the cartridge module 12 has a first fitting portion 1252, the housing 10 has a second fitting portion 104, and when the firing handle 11 drives the cartridge module 12 to move, the first fitting portion 1252 and the second fitting portion 104 are mutually adapted to control the axial movement of the cartridge module 12 along the circumcision stapler 300.

Here, by the interaction of the first fitting portion 1252 and the second fitting portion 104, the stable movement of the cartridge assembly 12 along the circumcision stapler 300 can be achieved without deviation, thereby ensuring the cutting effect and the staple forming effect.

Specifically, the nail pushing seat 125 includes two driving portions 1253 matched with the two firing handles 11 and a nail pushing seat body 1254 connected to the two driving portions 1253, the nail pushing seat body 1254 is connected to the nail pushing sheet 123, and the nail pushing seat body 1254 and the nail pushing sheet 123 are connected by a snap fit.

The first fitting portion 1252 is located at the driving portion 1253.

Of course, first mating portion 1252 may be located elsewhere on cartridge assembly 12.

One of the first fitting portion 1252 and the second fitting portion 104 is a rib, and the other is a guide groove, and the rib and the guide groove both extend along the axial direction of the circumcision stapler.

In this embodiment, the first engagement portion 1252 is a rib, and the second engagement portion 104 is a guide groove.

Specifically, taking the one-side driving portion 1253 as an example, the driving portion 1253 includes a first surface 1253a and a second surface 1253b respectively corresponding to the first casing 101 and the second casing 102, the first surface 1253a is provided with a first rib 1252a, the first casing 101 is provided with a first guide groove 104a matched with the first rib 1252a, the second surface 1253b is provided with a second rib 1252b, and the second casing 102 is provided with a second guide groove 104b matched with the second rib 1252 b.

In this way, when the nail pushing seat 125 moves axially towards the circumcision stapler 300 relative to the housing 10, the first fitting portion 1252 and the second fitting portion 104 are stably fitted to each other, so that the moving direction of the nail pushing seat 125 is not deviated.

The first rib 1252a and the second rib 1252b are symmetrically arranged.

In addition, in the axial direction of the circumcision stapler 300, the first guiding groove 104a has a first length such that the first rib 1252a is not separated from the first guiding groove 104a at all times, so as to ensure the stable movement of the nail pushing seat 125 in all directions.

In this embodiment, referring to fig. 20, the glans base 20 further includes an exhaust mechanism 204, when the glans is placed in the glans cavity 201 and the foreskin extends to the glans cavity 201, a space is formed among the glans, the foreskin and the glans cavity 201, and the exhaust mechanism 204 is used for exhausting gas in the space.

Here, the exhaust mechanism 204 is at least one through hole 204 located on the glans penis cavity 201, when the opening of the glans penis of the patient is small and the foreskin is tightly fitted with the annular edge 202 of the glans penis cavity 201, a closed space is formed among the glans penis, the foreskin and the glans penis cavity, so that the glans penis cannot continuously move close to the glans penis cavity 201, and the through hole 204 can effectively exhaust the gas in the closed space, so that the glans penis can continuously move close to the glans penis cavity 201.

In this embodiment, the through hole 204 is located on a side of the balanus cavity 201 away from the annular edge 202.

Specifically, the through hole 204 is provided near the screw 21.

In this embodiment, referring to fig. 21-24, the anvil 22 includes a first adapter portion 221, and the glans seat 20 includes a second adapter portion 205, wherein the first adapter portion 221 and the second adapter portion 205 cooperate with each other to limit the anvil 22 from separating from the glans seat 20 along the axial direction of the glans seat assembly 200.

In other words, the anvil 22 includes a first extension 221a, the side of the balanus cavity 20 near the annular edge 202 has a second extension 205a, the second extension 205a and the first extension 221a have an overlapping portion in the axial direction of the balanus assembly 200, and the second extension 205a limits the first extension 221a from moving toward the proximal end of the balanus assembly 200 along the axial direction of the balanus assembly 200.

Here, the first adapter 221 and the second adapter 205 or the first extension 221a and the second extension 205a can cooperate to prevent the anvil 22 from separating from the balanus seat 20 during the operation.

The first adaptive portion 221 and the second adaptive portion 205 are further described below as an example.

In this embodiment, the anvil 22 includes an anvil body 222, the near end of the anvil body 222 has an anvil surface 223, the first adapting portion 221 is connected to the far end of the anvil body 222 and extends toward the center of the anvil 22, in this embodiment, the first adapting portion 221 and the anvil body 222 are integrally formed

The second adapter 205 is located on the proximal surface of the annular rim 202, and the second adapter 205 is connected to the glans cavity 201, in this embodiment, the second adapter 205 is integrally formed with the glans base 20.

In this embodiment, the first adapting part 221 includes a first inclined surface 2211, and the second adapting part 205 includes a second inclined surface 2051, wherein the second inclined surface 2051 and the first inclined surface 2211 interfere with each other when the anvil 22 and the glans base 20 are assembled with each other.

Specifically, the first adapting portion 221 further includes a first distal end surface 2212 and a first proximal end surface 2213, the first inclined surface 2211 is connected to the first distal end surface 2212 and the first proximal end surface 2213, an included angle between the first inclined surface 2211 and the first proximal end surface 2213 is an obtuse angle, the second adapting portion 205 further includes a second distal end surface 2052 and a second proximal end surface 2053, the second inclined surface 2051 is connected to the second distal end surface 2052 and the second proximal end surface 2053, and an included angle between the second inclined surface 2051 and the second proximal end surface 2053 is an acute angle.

When the anvil 22 and the glans 20 are assembled with each other, the first proximal end surface 2213 and the second proximal end surface 2053 are located on the same plane.

In this embodiment, the first adapting part 221 and the second adapting part 205 are both hollow ring-shaped structures, that is, the first adapting part 221 is actually an area inside the anvil 22.

It is understood that the first fitting part 221 and the second fitting part 205 may be a plurality of parts distributed at intervals.

In the present embodiment, in the direction in which the center of the knife anvil 23 faces the periphery, the periphery of the knife anvil 23 has a plurality of protrusions 231 distributed at intervals, and correspondingly, the anvil 22 has a plurality of recesses 225, and by the cooperation of the protrusions 231 and the recesses 225, the stable cooperation between the knife anvil 23 and the anvil 22 can be realized, so that the knife anvil 23 cannot be completely separated from the anvil 22 after the cutting is completed.

In the present embodiment, referring to fig. 24 and 25, the cartridge 122 has a first positioning portion 1221, and the screw 21 has a second positioning portion 211.

It should be noted that the first positioning portion 1221 may also be located at the nail pushing plate 123.

The distal end of the nail bin 121 is provided with a plurality of annularly distributed nail holes, the proximal end of the nail anvil 22 is provided with a plurality of annularly distributed nail anvil slots 2201, and the plurality of nail holes correspond to the plurality of nail anvil slots 2201 one by one.

When the cartridge base 20 and the cartridge module 12 are assembled, the first positioning portion 1221 and the second positioning portion 211 cooperate with each other to limit the cartridge base 200 to rotate relative to the cartridge module 12, so that the plurality of staple holes correspond to the plurality of anvil slots 2201 one-to-one.

Here, through the alignment of the balanus seat 20 and the nail bin assembly 12, the one-to-one correspondence of a plurality of nail holes and a plurality of nail anvil slots 2201 is realized, and each nail can be completely formed in the nail anvil slot 2201.

Specifically, when the staple cartridge assembly 12 is molded, a first fixed relative position relationship is formed between the first positioning portion 1221 and the plurality of staple holes, when the glans penis holder assembly 200 is molded, a second fixed relative position relationship is formed between the second positioning portion 211 and the plurality of staple anvil slots 2201, and when the first positioning portion 1221 and the second positioning portion 211 are matched with each other, the one-to-one correspondence between the plurality of staple holes and the plurality of staple anvil slots 2201 is realized through the first fixed relative position relationship and the second fixed relative position relationship.

That is to say, the relative positions between the first positioning portion 1221 and the plurality of staple holes are fixed, and the relative positions between the second positioning portion 211 and the plurality of anvil slots 2201 are also fixed, so that the relative positions between the plurality of staple holes and the plurality of anvil slots 2201 can be fixed as long as the relative positions between the first positioning portion 1221 and the second positioning portion 211 are fixed, and the one-to-one correspondence between the plurality of staple holes and the plurality of anvil slots 2201 can be realized.

In the present embodiment, the first positioning portion 1221 is a spline groove 1221 located on the inner surface of the nail barrel 122, and the second positioning portion 211 is a spline 211 located on the outer surface of the screw rod 21, where the second positioning portion 221 may also be located on the anvil shaft 203.

The spline grooves 1221 extend in the axial direction of the circumcision stapler.

The present embodiment also provides a method for forming a balanus seat assembly, which includes the steps of, with reference to fig. 26 to 28:

providing a lower die 50, wherein the lower die 50 comprises a fixed cavity 51, an injection molding cavity 52 and at least one positioning column 53, and the injection molding cavity 52 comprises a cavity 521 for molding the second positioning part 211;

providing a ring-shaped anvil 22, wherein the anvil 22 has at least one positioning hole 224, and one end of the anvil 222 has a plurality of anvil slots 2201;

providing a screw rod 21;

the screw rod 21 and the anvil 22 are placed in the fixing cavity 51, and the positioning hole 224 and the positioning column 53 correspond to each other;

providing an upper mold 60, and fixing the upper mold 60 and the lower mold 50 to each other;

the injection molding material is injected into the injection molding cavity 52 to form the glans base assembly 200, the second positioning portion 211 is formed on the outer surface of the screw rod 21, and a second fixed relative position relationship is formed between the second positioning portion 211 and the plurality of anvil slots 2201.

Here, the relative positions of the chamber 521 forming the second positioning portion 211 and the positioning column 53 are fixed, the relative positions between the positioning hole 224 on the anvil 22 and the plurality of anvil slots 2201 are also fixed, and when the anvil 22 is assembled to the lower die 50 through the positioning hole 224 and the positioning column 53, the relative positions between the injection-molded second positioning portion 211 and the plurality of anvil slots 2201 should also be fixed, that is, the second positioning portion 211 and the plurality of anvil slots 2201 have a second fixed relative position relationship.

In the present embodiment, the upper mold 60 has an injection channel 61 communicating with the injection cavity 52, and the injection material enters the injection cavity 52 through the injection channel 61.

The lower mold 50 includes three positioning posts 53 separately provided, and the anvil 22 includes three positioning holes 224 corresponding to the three positioning posts 53.

The present embodiment further provides a method for forming a circumcision stapler, which includes the steps of, with reference to fig. 29:

providing a nail bin assembly 12, wherein the nail bin assembly 12 is provided with a first positioning part 1221, one end of the nail bin assembly 12 is provided with a plurality of nail holes which are distributed annularly, and a first fixed relative position relationship is formed between the first positioning part 1221 and the nail holes;

providing a balanus assembly 200 formed according to the above-described balanus assembly molding method;

the balanus assembly 200 is assembled to the nail barrel 122, the first positioning portion 1221 and the second positioning portion 211 are matched with each other to limit the balanus assembly 200 to rotate relative to the nail barrel 122, and the one-to-one correspondence between the plurality of suture nail holes and the plurality of nail anvil slots 2201 is realized through the first fixed relative position relationship and the second fixed relative position relationship.

Here, the first positioning portion 1221 is located at the staple cartridge 122 or the staple pushing plate 123, and by aligning the cartridge base 20 with the staple cartridge assembly 12, a plurality of staple holes and a plurality of staple anvil slots 2201 are in one-to-one correspondence, so as to ensure that each staple can be completely formed in the staple anvil slots 2201.

For other descriptions of the circumcision anastomat forming method of the embodiment, reference may be made to the description of the circumcision anastomat, and further description is omitted here.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.

Claims

1. A circumcision stapler, comprising:

2. The circumcision stapler according to claim 1, wherein a limiting groove is provided on a side of the housing close to the stopping mechanism, and the connecting portion is located in the limiting groove.

3. The circumcision stapler according to claim 2, wherein the limiting groove includes a limiting portion, the limiting portion and the connecting portion cooperate to limit the axial movement of the stopping mechanism along the circumcision stapler and the rotation of the stopping mechanism relative to the screw rod.

4. The circumcision stapler according to claim 2, wherein the housing comprises a first housing and a second housing which are oppositely arranged, the first housing is provided with a first limit groove, the second housing is provided with a second limit groove, the stop mechanism comprises two connecting parts which are oppositely arranged, and the two connecting parts are respectively positioned in the first limit groove and the second limit groove.

5. The circumcision stapler according to claim 2, wherein the side of the connecting part away from the through hole comprises a first arc surface, the inner surface of the limiting groove comprises a second arc surface, and the first arc surface and the second arc surface are matched with each other.

6. The circumcision anastomat as claimed in claim 1, wherein one side of the stopping part far away from the through hole is a stopping surface, one side of the firing handle close to the stopping mechanism is a supporting wall, and the stopping surface is located on the motion path of the supporting wall.

7. The circumcision stapler according to claim 6, wherein the stop surface and the holding wall are both planar.

8. The circumcision stapler according to claim 1, wherein the stapler body comprises two firing handles symmetrically disposed at both sides of the housing, and the stopping mechanism comprises two stopping portions symmetrically disposed, each stopping portion being located on a rotation path of the corresponding firing handle.

9. The circumcision stapler according to claim 8, wherein the stopping mechanism comprises two connecting parts oppositely arranged, and two stopping parts are staggered with the two connecting parts.

10. The circumcision stapler according to claim 1, wherein the housing is provided with a firing handle mounting hole, the firing handle is provided with an opening, and the mounting hole is connected with the opening through a first pin shaft.