CN211325286U

CN211325286U - Head swinging mechanism and medical anastomat

Info

Publication number: CN211325286U
Application number: CN201922301108.5U
Authority: CN
Inventors: 单腾
Original assignee: Suzhou Tianchen International Medical Technology Co Ltd
Current assignee: Touchstone International Medical Science Co Ltd; Suzhou Tianchen International Medical Technology Co Ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-08-25
Anticipated expiration: 2029-12-19

Abstract

The utility model provides a yaw mechanism and medical anastomat, yaw mechanism includes yaw pull rod, drive assembly and casing, and the inside of casing is provided with the drive assembly holding tank, and the inside wall of drive assembly holding tank is provided with at least one notch, and drive assembly includes first driving piece, second driving piece and setting element, is provided with the setting element holding tank in the second driving piece, and first driving piece drives the second driving piece rotatory when setting element and notch are relative, and the setting element part at least gets into the notch. Through adopting the utility model discloses, through the setting element of drive assembly and the cooperation of the notch of casing, make things convenient for the operator to set up the different swing angle of pin fin portion, and then the swing angle of accurate control pin fin portion to when not exerting external force, drive assembly's setting element forms relatively stable cooperation with the notch of casing, can avoid uncontrollable pin fin portion to swing.

Description

Head swinging mechanism and medical anastomat

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to yaw mechanism and medical anastomat.

Background

A linear stapler generally comprises an instrument platform and a head mounted to the platform, which can be passed through a small incision in the body by a puncture instrument to access a surgical site to perform a procedure. Specifically, the instrument platform comprises a firing handle, the head comprises a nail box shell and a nail head part arranged on the far end side of the nail box shell, a firing assembly is arranged inside the nail box shell, and the nail head part is a part for implementing cutting and suturing actions. Under the drive of the firing handle, the firing assembly can drive the nail head to complete the suture and incision operation.

In order to realize the swinging of the nail head relative to the nail box shell, a swinging pull rod is arranged in the nail box shell, the near end side of the swinging pull rod is connected to a swinging driving piece, the far end side of the swinging pull rod is rotatably fixed on the near end side of the nail head, and when the swinging driving piece drives the swinging pull rod to move along the axial direction of the nail box shell, the far end side of the swinging pull rod drives the nail head to swing clockwise or anticlockwise relative to the nail box shell.

Among the current linear type anastomat, when the yaw was swung, be difficult to set up wobbling angle to in the use, uncontrollable swing phenomenon still can appear in the pin head, thereby causes the uncontrollable of pin head swing angle, leads to the unable accurate location of the pin head of anastomat, influences the operation effect.

The utility model discloses in, distal end side and near-end side are for the operator, and the one end that is nearer apart from the operator is near-end side, and the one end far away apart from the operator, the one end that is more close to the operation position promptly is the distal end side.

SUMMERY OF THE UTILITY MODEL

To the problem among the prior art, the utility model aims to provide a yaw mechanism and medical anastomat through the cooperation of the notch of setting element and casing, makes things convenient for the operator to set up the different swing angle of pin fin portion to can avoid the swing of uncontrollable pin fin portion.

The embodiment of the utility model provides a head swinging mechanism for a medical anastomat, which comprises a head swinging pull rod, a driving component and a shell, wherein the driving component is matched with the head swinging pull rod so as to drive the head swinging pull rod to move along the axial direction of the anastomat when the driving component rotates, the shell is provided with a driving component accommodating groove for accommodating the driving component, and the inner side wall of the driving component accommodating groove is provided with at least one notch;

the driving assembly comprises a first driving piece, a second driving piece and a positioning piece, wherein the positioning piece accommodating groove for accommodating the positioning piece is formed in the second driving piece, the first driving piece drives the second driving piece to rotate when rotating, the second driving piece rotates to the position piece, and when the position piece is opposite to the notch, at least part of the positioning piece enters the notch.

Optionally, the positioning element accommodating groove is communicated to an upper surface of the second driving element, and the first driving element at least partially covers the positioning element accommodating groove.

Optionally, the first driving element comprises a driving disc, and the driving disc at least partially covers the positioning element accommodating groove;

the driving disc is provided with a first matching portion, the upper surface of the second driving piece is provided with a second matching portion, the first matching portion is matched with the second matching portion, and the first matching portion and the second matching portion are not arranged along the diameter direction of the driving disc.

Optionally, the first mating portion and the second mating portion are disposed along a circumferential direction of the driving disc, the first mating portion is a first groove, and the second mating portion is a first protrusion; or the second matching part is a first groove, and the first matching part is a first bulge.

Optionally, a length of the first groove in the circumferential direction of the drive disc is greater than a length of the first protrusion in the circumferential direction of the drive disc.

Optionally, the first driving part comprises a driving disc, and the middle of the lower surface of the driving disc is recessed upwards to form a step surface on the periphery of the lower surface of the driving disc, and the step surface is located on the outer side of the second driving part.

Optionally, the first driving part includes a driving disc, a driving groove is formed in a lower surface of the driving disc, a protrusion is arranged above the positioning part, and at least part of the protrusion enters the driving groove.

Optionally, the driving groove includes a first groove portion and a second groove portion, a central groove portion is formed between a first end of the first groove portion and a first end of the second groove portion, the central groove portion is far away from the axis of the driving disc relative to a second end of the first groove portion and a second end of the second groove portion, and the driving groove forms a V-shaped communicating groove with the central groove portion as a vertex.

Optionally, when the positioning element extends outwards for a maximum length relative to the second driving element, the protrusion of the positioning element at least partially enters the central slot portion of the driving slot, and the first driving element rotates, so that when the protrusion of the positioning element moves along the first slot portion or the second slot portion, the driving slot presses the positioning element to retract inwards relative to the second driving element.

Optionally, the notch of the housing includes a first side wall and a second side wall that are disposed opposite to each other, the protrusion of the positioning element is located in the first slot portion or the second slot portion, and when the first driving element continues to rotate, the positioning element continues to retract inward relative to the second driving element under the pressure of the first side wall or the second side wall.

Optionally, an elastic element is further disposed in the positioning element accommodating groove, and when the positioning element does not enter the notch, the positioning element retracts into the positioning element accommodating groove under the pressure of the inner side wall of the driving assembly accommodating groove, and the elastic element is pressed to deform.

Optionally, the setting element includes first end, backstop portion and the second end that sets gradually, the setting element holding tank includes middle section holding part and the front end holding part that the intercommunication set up, middle section holding part for the front end holding part is closer to the axle center of second driving piece, the first end of setting element and backstop portion are located respectively among front end holding part and the middle section holding part, just the width of front end holding part is less than the width of backstop portion.

Optionally, the second end of the positioning element is provided with an elastic element accommodating groove communicated to the stopping portion, and an elastic element is arranged in the elastic element accommodating groove.

Optionally, its characterized in that, the setting element holding tank include still include with terminal holding portion that the middle section holding portion communicates, the second end of setting element is located in terminal holding portion, the backstop portion of setting element with still be provided with an elastic component between the second end of setting element, the elastic component is located in the middle section holding portion of setting element holding tank, just the width of elastic component is greater than the width of terminal holding portion.

Optionally, a protrusion is disposed between the first end of the positioning element and the stopping portion, a driving groove is disposed on the bottom surface of the first driving element, and at least a portion of the protrusion enters the driving groove;

the first driving part comprises a driving disc, the middle of the lower surface of the driving disc is recessed upwards to form a step surface at the periphery of the lower surface of the driving disc, and the step surface is positioned on the outer side of the bump.

Optionally, the first driving part comprises a driving disc, and the middle of the lower surface of the driving disc is recessed upwards to form a step surface at the periphery of the lower surface of the driving disc, and the step surface is located at the outer side of the projection.

Optionally, the first driving member includes a driving shaft and a driving disc, the head swing mechanism further includes a swing button, and the swing button is matched with the driving shaft through a first connecting member, so that when the swing button rotates, the first driving member is driven to rotate.

Optionally, the driving assembly further includes a third driving member, and the third driving member is matched with the second driving member, so that when the second driving member rotates, the third driving member is driven to rotate;

the third driving piece is matched with the swinging pull rod through a connecting part, so that when the third driving piece rotates, the swinging pull rod is driven to move along the axial direction of the anastomat through the connecting part.

Optionally, the third driving member comprises a protruding portion and a disc portion disposed below the protruding portion, the second driving member has a first mounting hole disposed therein, and the protruding portion of the third driving member is inserted into the first mounting hole;

the inner side surface of the first mounting hole is provided with a third matching part, and the outer side surface of the protruding part of the third driving piece is provided with a fourth matching part matched with the third matching part.

Optionally, a second connecting piece is further disposed in the first mounting hole, a second mounting hole facing the side face of the second driving piece is disposed in the second driving piece, a matching hole is disposed in a protruding portion of the third driving piece, and the second connecting piece is disposed in the second mounting hole and the matching hole in a penetrating manner.

Optionally, the third driving member is integrally formed with the second driving member.

Optionally, the notch comprises an initial position notch and a non-initial position notch, the initial position notch having a depth greater than the non-initial position notch.

The embodiment of the utility model provides a medical anastomat is still provided, include yaw mechanism.

The utility model provides a yaw mechanism and medical anastomat have following advantage:

the utility model provides a yaw mechanism for medical anastomat, the cooperation of the setting element through drive assembly and the notch of casing makes things convenient for the operator to set up the different swing angle of pin fin portion, can accurate control and the axial displacement distance of drive assembly complex yaw pull rod, and then the swing angle of accurate control pin fin portion to when not exerting external force, drive assembly's setting element forms relatively stable cooperation with the notch of casing, can avoid the swing of uncontrollable pin fin portion.

Drawings

Other features, objects and advantages of the invention will become more apparent from a reading of the following detailed description of non-limiting embodiments thereof, with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a head swing mechanism according to an embodiment of the present invention;

fig. 2 is a top view of a yaw mechanism according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

fig. 4 and 5 are schematic views of the drive assembly and end cap and connector cooperation of an embodiment of the present invention;

fig. 6 is a perspective view of an upper housing according to an embodiment of the present invention;

fig. 7 is a top view of an upper housing according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a driving assembly according to an embodiment of the present invention;

fig. 9 is a schematic structural view of a third driving member according to an embodiment of the present invention;

fig. 10 is a front view of a drive assembly of an embodiment of the present invention;

fig. 11 is a cross-sectional view of the drive assembly with the second and third driving members integrally formed according to an embodiment of the present invention;

fig. 12 is a top view of the drive assembly and the upper housing in a first state in accordance with an embodiment of the present invention;

fig. 13 is a top view of the second driving member and the upper housing in the first state according to an embodiment of the present invention;

fig. 14 is a front view of the first and second driving members in a first state of an embodiment of the invention;

fig. 15 is a cross-sectional view of the first driving member engaged with the second driving member in the first state according to an embodiment of the present invention;

fig. 16 is a perspective view of the first driving member in the first state according to an embodiment of the present invention;

fig. 17 is a perspective view of the first driving member and the positioning member in the first state according to the embodiment of the present invention;

fig. 18 is a bottom view of the first driving member and the positioning member in the first state according to the embodiment of the present invention;

fig. 19 is a perspective view of the positioning member and the spring according to an embodiment of the present invention;

FIG. 20 is a perspective view of the positioning member of another structure of the present invention engaged with a spring;

fig. 21 is a top view of the drive assembly and the upper housing in a second state in accordance with an embodiment of the present invention;

fig. 22 is a top view of the second driving member and the upper housing in the second state according to the embodiment of the present invention;

FIG. 23 is an enlarged view of the receiving slot portion of the drive assembly of FIG. 22;

fig. 24 is a bottom view of the first driving member and the positioning member in the second state according to the embodiment of the present invention;

fig. 25 is a top view of the drive assembly and the upper housing in a third state in accordance with an embodiment of the present invention;

fig. 26 is a top view of the second driving member and the upper housing in the third state according to the embodiment of the present invention;

FIG. 27 is an enlarged view of the receiving slot portion of the drive assembly of FIG. 26;

fig. 28 is a top plan view of a drive assembly in cooperation with a housing in accordance with another embodiment of the present invention;

fig. 29 is a perspective view of a first drive member of another embodiment of the present invention;

FIG. 30 is a schematic structural view of a positioning member according to another embodiment of the present invention;

FIG. 31 is a schematic view of the drive assembly of FIG. 28 after rotation;

fig. 32 is a plan view of the positioning member engaged with the housing in the state of fig. 31.

Reference numerals:

1 second end of the rocking button 42 positioning element

2 first driving member 43 stop

21 drive shaft 44 projection

211 first connecting piece (first pin) 5 third driving piece

212 first mating hole 51 fourth mating portion (second recess)

22 drive disk 52 second mating hole

221 first mating portion (first groove) 53 fifth mating portion (protruding shaft)

23 step surface 6 end cover

24 driving groove 61 limiting column

241 upper shell of first groove part 7

242 second groove 71 drive assembly receiving groove

243 center groove portion 72 notch

3 second drive member 721 initial position notch

31 second fitting part (first projection) 722 non-initial position notch

32 positioning member receiving groove 723 first side wall

321 end receptacle 724 second side wall

322 middle section receiving portion 725 third side wall

323 leading end housing 726 holding part

33 third fitting part (second projection) 8 lower case

34 second connecting piece (second pin shaft) 91 connecting part

35 spring 911 sixth fitting part (waist-shaped hole)

36 first mounting hole (center) 912 distal side of connection member

37 second mounting hole (side wall) 92 swing head pull rod

4 distal side of swing link of positioning piece 921

First end 922 of the 41 position member is proximal to the swing link

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.

The utility model provides a head swinging mechanism for a medical anastomat and the medical anastomat comprising the same. The anastomat comprises an instrument platform and a head, wherein the head comprises a nail box shell and a nail head, and the platform comprises a head swinging mechanism used for controlling the nail head to swing relative to the nail box shell. The head swinging mechanism comprises a shell, a driving component and a head swinging pull rod, wherein the shell is provided with a driving component accommodating groove for accommodating the driving component, the driving component is matched with the head swinging pull rod, so that the driving component is driven to move along the axial direction of the anastomat when rotating, therefore, the driving component can be operated to rotate when the nail head swings in need of control, the driving component drives the head swinging pull rod to move along the axial direction of the anastomat, drives the nail head to swing, and keeps in a required position.

In order to facilitate the switching of different swing angles of the nail head and the avoidance of uncontrollable swing of the nail head by an operator, the shell is provided with a driving assembly accommodating groove for accommodating the driving assembly, and the inner side wall of the driving assembly accommodating groove is provided with at least one notch. The driving assembly comprises a first driving piece, a second driving piece and a positioning piece, wherein the positioning piece accommodating groove for accommodating the positioning piece is formed in the second driving piece, the first driving piece drives the second driving piece to rotate when rotating, the second driving piece rotates to the position piece, and when the position piece is opposite to the notch, at least part of the positioning piece enters the notch.

Therefore, when the nail head is controlled to swing, an operator operates the first driving piece in the driving assembly to rotate, the first driving piece drives the second driving piece to rotate, the positioning piece in the positioning piece accommodating groove of the second driving piece rotates along with the first driving piece, and after the positioning piece rotates to enter the notch, certain resistance and blockage exist under the obstruction of the notch, and the positioning piece can stay at the position of the notch, so that the driving assembly is kept at the position at the moment; when the operator continues to operate the drive assembly to rotate, the positioning member disengages from the notch to continue rotating, and enters the next notch and stays in the position of the notch at the time. Because the position of the notch corresponds to the swing angle of the nail head, the rotation angle of the driving assembly can be set by setting the position of the notch, and then different swing angles of the nail head are set. In the operation process, a relatively stable matching relation can be formed through the matching of the positioning piece in the notch, and the nail head can keep a relatively stable state under the condition of not applying external force artificially, so that the uncontrollable swinging of the nail head is avoided.

The structure of the swing mechanism according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings, and it should be understood that the embodiments are not intended to limit the scope of the present invention.

As shown in fig. 1 to 18, the structure of the swing head mechanism in the first state according to an embodiment of the present invention is shown, where the first state is defined as a state where the first driving member in the driving assembly is at the initial first position, and at this time, the positioning member in the driving assembly at least partially enters the notch of the inner side surface of the housing. As shown in fig. 1 to 8, in this embodiment, the head swing mechanism includes a head swing pull rod 92, a driving component, and a housing, where the driving component is matched with the head swing pull rod 92, so that when the driving component rotates, the head swing pull rod 92 is driven to move along the axial direction of the stapler. In this embodiment, the housing includes an upper housing 7 and a lower housing 8, the upper housing 7 is provided with a driving assembly receiving groove 71 receiving the driving assembly, and an inner sidewall of the driving assembly receiving groove 71 is provided with at least one notch 72. In other alternative embodiments, the casing can also be a whole, or adopt other division modes, the drive assembly holding tank set up in the upper surface of casing can, all belong to within the scope of protection of the utility model.

As shown in fig. 1 to 8, the driving assembly includes a first driving member 2, a second driving member 3 and a positioning member 4, a positioning member accommodating groove 32 for accommodating the positioning member 4 is disposed in the second driving member 3, the first driving member 2 drives the second driving member 3 to rotate when rotating, the second driving member 3 rotates until the positioning member 4 is opposite to the notch 72, and at least a portion of the positioning member 4 enters the notch 72.

Therefore, when the nail head is controlled to swing, an operator operates the first driving element 2 in the driving assembly to rotate, the first driving element 2 drives the second driving element 3 to rotate, the positioning element 4 in the positioning element accommodating slot 32 of the second driving element 2 rotates along with the first driving element, and after the positioning element 4 rotates to enter the notch 72, under the obstruction of the notch 72, a certain resistance and a certain blockage exist, and the positioning element stays at the position of the notch 72, so that the driving assembly is kept at the current position; as the operator continues to operate the drive assembly to rotate, the locating member 4 disengages from the notch 72 to continue to rotate, thereby entering the next notch 72 and staying in position at that notch 72. Since the position of the notch 72 corresponds to the swing angle of the stud, the rotation angle of the driving assembly can be set by setting the position of the notch 72, thereby setting different swing angles of the stud. During operation, a relatively stable matching relationship can be formed by matching the positioning piece 4 in the notch 72, and the nail head can be kept in a relatively stable state under the condition of not applying external force artificially, so that the uncontrollable swinging of the nail head is avoided.

The utility model discloses in, distal end side and near-end side are for the operator, and the one end that is nearer apart from the operator is near-end side, and the one end far away apart from the operator, the one end that is more close to the operation position promptly is the distal end side. For example, in the view of fig. 5, the right side of the yaw tie 92 is the distal end side 921 of the yaw tie 92, the distal end side 921 of the yaw tie 92 is connected to the nail head, the left side of the yaw tie 92 is the proximal end side 922 of the yaw tie 92, and the proximal end side 922 of the yaw tie 92 is connected to the distal end side 912 of the link member 91. Above and below refer to above and below in the perspective of fig. 3, that is, the upper surface of the upper housing 7 shown in fig. 7, and as shown in fig. 3, the swing button 1 is located above the first driving member 2, and the second driving member 3 is located below the first driving member 2. In the present invention, for a component, the inner side and the outer side are relative to the axis of the component, the side close to the axis is the inner side, and the side far away from the axis is the outer side.

As shown in fig. 3 and 8, the positioning element accommodating groove 32 is communicated to the upper surface of the second driving element 3, so that the positioning element 4 can be conveniently taken out of or put into the upper surface of the second driving element 3, and the positioning element 4 can be conveniently installed. In order to prevent the positioning element 4 from falling out of the upper surface of the second driving element 3 during the use of the stapler, the first driving element 2 at least partially covers the positioning element receiving groove 32 to block the upward movement of the positioning element 4.

In this embodiment, as shown in fig. 3 to 8, the first driving member 2 includes a driving shaft 21 and a driving plate 22, and the driving plate 22 covers the upper surface of the second driving member 3. A swing button 1 is further arranged above the first driving member 2, and the swing button 1 is connected with the driving shaft 21 through a first connecting member 211. In this embodiment, the first connecting member 211 is a first pin, and a first fitting hole 212 for installing the first connecting member 211 is provided in the driving shaft 21. The first connecting piece 211 is inserted into the first fitting hole 212, and two ends of the first connecting piece are fixed inside the swing button 1, so that the swing button 1 and the driving shaft 21 are connected in a non-rotatable manner. When an operator operates the head swinging mechanism to control the head swinging of the nail head, the swinging button 1 is rotated to rotate the first driving piece 2. An end cover 6 can be further arranged between the swing button 1 and the driving assembly, a limiting column 61 is arranged on the lower surface of the end cover 6, and the end cover 6 limits the vertical movement of the driving assembly.

As shown in fig. 8 and 12, a first fitting portion 221 is provided on the driving disc 22, a second fitting portion 31 is provided on the upper surface of the second driving element 3, and the first fitting portion 221 is fitted with the second fitting portion 31. The first fitting portion 221 and the second fitting portion 31 are not provided in the diameter direction of the drive disk, and it is further preferable that the first fitting portion 221 and the second fitting portion 31 are provided in the axial direction of the drive disk. In this embodiment, the first fitting portion 221 is a first groove, the second fitting portion 31 is a first protrusion, and the length of the first groove in the circumferential direction of the drive plate 22 is greater than the length of the first protrusion in the circumferential direction of the drive plate 22. Like this, when operating personnel drives first driving piece 2 rotatory through rotatory swing button 1, first recess is rotatory, nevertheless because first bellied end does not contact with first recess at first, the rotation of first recess can not drive first bellied rotation, first driving piece 2 also can not drive second driving piece 3 rotatory, when rotatory to the contact of the inside wall of first bellied end and first recess, continue rotatory first driving piece 2, first driving piece 2 can drive second driving piece 3 rotatory. Under the first state, when first driving piece 2 is located the first position, first protruding preferred is located the middle part of first recess all leaves certain redundant space at the both ends of first recess like this, and is convenient first driving piece 2 all can not just drive at rotatory initial stage when rotatory to clockwise and anticlockwise second driving piece 3 is rotatory.

In other alternative embodiments, the second matching portion 31 may be a first groove, the first matching portion is a first protrusion, and the length of the first groove along the circumferential direction of the driving disc 22 is greater than the length of the first protrusion along the circumferential direction of the driving disc 22, similarly, when the first protrusion rotates, because the end of the first protrusion does not contact with the first groove at the beginning, the rotation of the first protrusion does not drive the rotation of the first groove, the first driving member 2 does not drive the second driving member 3 to rotate, and when the end of the first protrusion contacts with the inner side wall of the first groove, the first driving member 2 rotates again, and the first driving member 2 can drive the second driving member 3 to rotate. Under the first state, when first driving piece 2 is located the first position, first protruding preferred is located the middle part of first recess all leaves certain redundant space at the both ends of first recess like this, and is convenient first driving piece 2 all can not just drive at rotatory initial stage when rotatory to clockwise and anticlockwise second driving piece 3 is rotatory.

In this embodiment, as shown in fig. 3 to 9, the driving assembly further includes a third driving member 5, and the third driving member 5 is matched with the second driving member 3, so that when the second driving member 3 rotates, the third driving member 5 is driven to rotate. The third driving member 5 is matched with the swing rod 92 through a connecting member 91, so that when the third driving member 5 rotates, the swing rod 92 is driven to move along the axial direction of the anastomat through the connecting member 91. The third driving member 5 comprises a convex part and a disc part arranged below the convex part, a first mounting hole 36 is arranged in the second driving member 3, and the convex part of the third driving member 5 is inserted into the first mounting hole 36; the inner side surface of the first mounting hole 36 is provided with a third matching part 33, and the outer side surface of the convex part of the third driving member 5 is provided with a fourth matching part 51 matched with the third matching part 33. In one embodiment, the third driving member 5 may be a strong metal member, and the second driving member 3 may be a plastic member.

When the operator operates during the yaw mechanism, at first rotatory swing button 1, swing button 1 drives first driving piece 2 rotatory, first driving piece 2 drives second driving piece 3 rotatory through the cooperation of first cooperation portion 221 and second cooperation portion 31, and second driving piece 3 drives third driving piece 5 rotatory through the cooperation of third cooperation portion 33 and fourth cooperation portion 51, and third driving piece 5 drives yaw pull rod 92 through adapting unit 91 and follows the axial direction motion of anastomat to the swing of pin fin portion has been realized.

In another embodiment, as shown in fig. 12, the third driver 5 is provided integrally with the second driver 3. The second driving member 3 is matched with the swing rod 92 through a connecting member 91, so that when the second driving member 3 rotates, the swing rod 92 is driven to move along the axial direction of the anastomat through the connecting member 91. When the operator operates the head swinging mechanism, at first the swing button 1 is rotated, and the swing button 1 drives the first driving piece 2 to rotate, the first driving piece 2 drives the second driving piece 3 to rotate through the cooperation of the first cooperation portion 221 and the second cooperation portion 31, and the second driving piece 3 drives the head swinging pull rod 92 to follow through the connecting part 91 the axial direction motion of anastomat to the swing of pin fin portion has been realized.

The connecting component 91 is provided with a sixth matching part 911, the distal end side 912 of the connecting component 91 is connected with the proximal end side 922 of the swing pull rod 92, the lower surface of the third driving component 5 is provided with a fifth matching part 53, and the fifth matching part 53 is matched with the sixth matching part 911, so that the rotation motion of the third driving component 5 is converted into the linear motion of the connecting component 9 along the axial direction of the anastomat. In this embodiment, the fifth matching portion 53 is a protruding shaft, and the sixth matching portion 911 is a waist-shaped hole, but the present invention is not limited thereto, and the fifth matching portion 53 may be a waist-shaped hole, and the sixth matching portion 911 is a protruding shaft, or other matching structures are adopted, all falling within the protection scope of the present invention.

In this embodiment, the third matching portion 33 is a second protrusion, the fourth matching portion 51 is a second groove, and in other alternative embodiments, the third matching portion 33 may be a second groove, and the fourth matching portion 51 may be a second protrusion, etc. In order to further improve the matching and alignment between the third driving element 5 and the second driving element 3, a second connecting element 34 is further disposed in the first mounting hole 36, a second mounting hole 37 communicating with the side surface of the second driving element 3 is disposed in the second driving element 3, a second matching hole 52 is disposed in the protruding portion of the third driving element 5, and the second connecting element 34 is inserted into the second mounting hole 37 and the second matching hole 52.

In the third driving member 5 and the embodiment that the second driving member 3 is integrally provided, the fifth matching portion 53 is directly provided on the lower surface of the second driving member 3, and is directly matched with the connecting member 91 or the swing pull rod 92, and the portion of the first driving member 3 passing through the first mounting hole 36 of the second driving member 3 can be provided below the first driving member, and the portion passing through the lower side of the first driving member 3 is directly matched with the connecting member 91 or the swing pull rod 92, etc., which all fall within the protection scope of the present invention.

As shown in fig. 7, in this embodiment, each notch 72 may have a different depth. For example, the recesses 72 are divided into two types: an initial position notch 721 and a non-initial position notch 722, the initial position notch 721 having a depth greater than the non-initial position notch 722. The initial position notch 721 is located in the axial direction of the stapler. The home position notch 721 may be provided in one or more number, and the non-home position notch 722 may be provided in one or more number. When the nail head is at the initial position, the positioning member 4 is located in the initial position notch 721, and with the rotation of the first driving member 2 and the second driving member 3, the positioning member 4 rotates to enter the non-initial position notch 722, and for an operator, the position of the initial position notch 721 can be determined by sensing the difference of the resistance, so that the initial position of the nail head can be determined more accurately, and the accurate positioning of the initial position of the nail head can be realized.

The number of the home position notches 721 can be determined according to the number of the positioning members 4, for example, in this embodiment, the positioning member receiving slots 32 are two oppositely disposed along the same straight line, and accordingly, two positioning members 4 are provided, and two home position notches 721 can be correspondingly provided. However, the present invention is not limited thereto, and in other embodiments, the number of the positioning members 4 may be selected to be one or more as needed, and the number of the initial position notches 721 does not necessarily correspond to the number of the positioning members 4.

As shown in fig. 13, the positioning member accommodating groove 32 includes a terminal accommodating portion 321, a middle accommodating portion 322, and a front end accommodating portion 323, which are sequentially connected to each other, the terminal accommodating portion 321 is closer to the axis of the second driving member 3 relative to the front end accommodating portion 323, the positioning member 4 includes a first end 41, a blocking plate 43, and a second end 42, which are sequentially connected to each other, the first end 41, the blocking portion 43, and the second end 43 of the positioning member 4 are respectively located in the front end accommodating portion 323, the middle accommodating portion 322, and the terminal accommodating portion 321, and in this embodiment, the blocking portion 43 is a blocking plate 43. The width of the front end receiving portion 323 is smaller than the width of the blocking plate 43, and the width of the blocking plate 43 is smaller than the width of the middle section receiving portion 322. When the positioning element 4 is aligned with the notch 72 and extends outward relative to the axial center of the second driving element 2, the first end 41 of the positioning element 4 enters the notch 72, and because the width of the baffle plate 43 is greater than the width of the front end accommodating portion 323, the baffle plate 43 can only move in the middle section accommodating portion 322 and cannot enter the front end accommodating portion 323, so that the positioning element 4 cannot fall out of the positioning element accommodating groove 32 in the radial direction of the upper surface of the second driving element 2.

As shown in fig. 15, an elastic member is further disposed in the positioning member receiving groove 32, and when the positioning member 4 does not enter the notch 72, the positioning member 4 retracts into the positioning member receiving groove 32 under the pressure of the inner side wall of the driving assembly receiving groove 71, and presses the elastic member to deform. In this embodiment, the elastic member is a spring 35, after the positioning member 4 is separated from the notch 72, when the first end 41 of the positioning member 4 contacts the inner sidewall of the driving assembly receiving slot 71, the spring 35 is compressed and deformed, and when the positioning member 4 rotates to align with the next notch 72, under the deformation restoring force of the spring 35, the first end 41 of the positioning member 4 protrudes outward and enters the notch 72 aligned at this time. As shown in fig. 19, the spring 35 is located between the baffle 43 and the second end 42 of the positioning member 4, the spring 35 is installed in the middle accommodating portion 322, and the width of the spring 35 is greater than that of the end accommodating portion 321. Thus, the accommodation space of the spring 35 can be restricted by the end surfaces of the shutter 43 and the tip accommodating portion 321.

In another alternative embodiment, as shown in fig. 20, the positioning member receiving groove 32 may include only the middle section receiving portion 322 and the front end receiving portion 323. The first end 41 of the positioning element 4 is located in the front end accommodating portion 323, and the stopping portion 43 of the positioning element 4 may be connected to the second end 42 of the positioning element 4. The second end 42 of the positioning element 4 is provided with an elastic element accommodating groove, the spring 35 is installed in the elastic element accommodating groove, and the position and the space of the spring 35 are limited by the bottom surface of the positioning element accommodating groove 32 and the elastic element accommodating groove.

As shown in fig. 15 and 16, the middle of the lower surface of the driving disc 22 is recessed upwards to form a step surface 23 at the periphery of the lower surface of the driving disc 22, the step surface 23 is located at the outer side of the second driving element 3 to form a better coverage of the first driving element 2 on the upper surface of the second driving element 3, the lower surface of the driving disc 22 and the inner side surface of the positioning element accommodating groove 32 jointly define a space for accommodating the positioning element 4, so as to block the upward movement of the positioning element 4, maintain the stability of the positioning element 4 in the vertical direction, and maintain the stability of the first driving element 2 in the axial direction relative to the second driving element 3.

As shown in fig. 15 to 19, a driving groove 24 is formed on a lower surface of the driving disc 22, and a protrusion 44 is formed above the positioning member 4, wherein the protrusion 44 is at least partially received in the driving groove 24. As shown in fig. 18, the driving groove 24 includes a first groove portion 241 and a second groove portion 242, a central groove portion 243 is formed between a first end of the first groove portion 241 and a first end of the second groove portion 242, the central groove portion 243 is away from the axial center of the driving disc 22 relative to a second end of the first groove portion 241 and a second end of the second groove portion 242, and the driving groove 24 forms a V-shaped communicating groove with the central groove portion 243 as a vertex, that is, the first groove portion 241, the second groove portion 242, and the central groove portion 243 are a communicating groove 24.

As shown in fig. 18, in the first state, when the positioning element 4 at least partially enters the notch 72 and the outward protruding length of the positioning element 4 relative to the second driving element 3 is the maximum, the protrusion 44 of the positioning element 4 at least partially enters the central groove portion 243 of the driving groove 24. At this time, the central groove portion 243 of the driving groove 24 and the positioning member 4 are located in the stapler axial direction.

As shown in fig. 15, the protrusion 44 is located between the first end 41 of the positioning element 4 and the blocking plate 43 and is disposed toward the driving groove 24, and the step surface 23 of the first driving element 2 is disposed opposite to the upper surface of the first end 41 of the positioning element 4. The recessed portion of the lower surface of the first driving element 2 is attached to the upper surface of the baffle 43, so that the accommodating space of the positioning element 4 is better defined by the lower surface of the first driving element 2 and the inner side surface of the positioning element accommodating groove 32, and the center alignment of the first driving element 2 and the second driving element 3 can be better realized.

Fig. 21 to 24 are schematic views of the swing head mechanism in the second state according to this embodiment. The second state is defined herein as: the first driving member 2 rotates from the first position to the second position along the counterclockwise direction, but the first driving member 2 does not drive the second driving member 3 to rotate yet, and the positioning member 4 retracts inward under the pressure of the inner sidewall of the driving groove 24.

As shown in fig. 21, since the length of the first groove 221 in the circumferential direction of the drive disc 21 is greater than the length of the first protrusion 31 in the circumferential direction of the drive disc 21, the first groove 221 has a certain redundant space with respect to the first protrusion 31, when the first driving member 2 rotates counterclockwise to the second position, the inner sidewall of one end of the first groove 221 does not contact or just contact with the end of the first protrusion 31, and the first driving member 2 does not drive the second driving member 3 to rotate during the rotation of the first driving member 2 from the first position to the second position. At this time, as shown in fig. 23 and fig. 24, due to the relative rotation between the first driving element 2 and the second driving element 3, the protrusion 44 of the positioning element 4 moves towards the second end of the second groove 242 along the extending direction of the second groove 242, and in the movement of the positioning element 4 along with the protrusion 44, the inner sidewall of the second groove 242 presses the positioning element 4 to retract inwards relative to the second driving element 3, so that the positioning element 4 can be more conveniently separated from the notch 72 by the rotation of the second driving element 3 in the next step. It should be noted that, since fig. 24 is a bottom view, the direction in fig. 24 is opposite to the direction in fig. 23, and both the clockwise direction and the counterclockwise direction in the present invention are the clockwise direction and the counterclockwise direction in the top view of fig. 22 and 23. Similarly, when the first driving element 2 rotates clockwise from the first position, the protrusion 44 of the positioning element 4 first moves toward the second end of the first groove 241 along the extending direction of the first groove 241, and during the movement of the positioning element 4 along with the protrusion 44, the inner sidewall of the first groove 241 presses the positioning element 4 to retract inward relative to the second driving element 3. The inward retraction means that the positioning member 4 retracts toward the axial center of the second driving member 3 and compresses the spring 35 to deform.

In this embodiment, as shown in fig. 23, the recess 72 has a holding portion 726, i.e. the deepest position of the recess 72 has a holding portion 726 with a shape corresponding to the shape of the first end 41 of the positioning member 4, and when the swing head operation is not performed, the holding portion 726 can better hold the first end 41 of the positioning member 4 in the recess 72, and stabilize the head at the current swing angle. Furthermore, in order to make it smoother to disengage the positioning element 4 from the holding portion 726 during the swinging operation, there is provided a cooperation of the V-shaped driving groove 24 and the projection 44, and the first end of the positioning element 4 is disengaged from the holding portion 726 when the first driving element 2 is rotated counterclockwise from the first position to the second position.

Fig. 25 to 27 are schematic structural views of the swing head mechanism in the third state of the embodiment. The third state is defined as that the first driving element 2 continues to rotate from the second position to the third position in the counterclockwise direction, and the positioning element 4 continues to retract inward relative to the second driving element 3 under the pressure of the inner side wall of the recess 72.

As shown in fig. 25, in the process that the first driving member 2 continues to rotate from the second position to the third position in the counterclockwise direction, the first groove 221 drives the first protrusion 31 to rotate, i.e. drives the second driving member 3 to rotate, the second driving member 3 drives the positioning member 4 to rotate in the counterclockwise direction, and at this time, the protrusion 44 of the positioning member 4 is located in the second groove 242. As shown in fig. 26 and 27, the recess 72 of the housing further includes a first sidewall 723 and a second sidewall 724 at the edge of the recess 72, the receiving groove 71 further includes a third sidewall 725 outside the recess 72, and when the first driving element 2 continues to rotate, the first end 41 of the positioning element 4 continues to retract inward relative to the second driving element 3 under the pressure of the first sidewall 723, so that the positioning element 4 can be completely disengaged from the recess 72, and the spring 35 further deforms and enters the third sidewall 725 portion of the receiving groove 71 until entering the next adjacent recess 72. At this time, since the positioning member 4 is already partially separated from the notch 72 by the urging of the driving groove 24 in the process of the transition from the first state to the second state, the separation of the positioning member 4 from the notch 72 is more smooth in the transition from the second state to the third state. The first driving member 2 continues to rotate, and the second driving member 3 drives the positioning member 4 to continue to rotate, so that the first end 41 of the positioning member 4 abuts against the third sidewall 725 of the driving component accommodating groove 71, which is not provided with the notch 72, and the deformation of the spring 35 is kept unchanged under the pressing of the third sidewall 725 of the driving component accommodating groove 71.

Similarly, after the first driving element 2 rotates clockwise from the first position until the protrusion 44 of the positioning element 4 at least partially enters the first groove 241, and the first driving element 2 continues to rotate, the first end 41 of the positioning element 4 continues to retract inward relative to the second driving element 3 under the urging of the second sidewall 724, so that the positioning element 4 can be completely disengaged from the notch 72, and the spring 35 further deforms, and the first end 41 of the positioning element 4 abuts against the third sidewall 725 of the driving assembly receiving slot 71, where the notch 72 is not provided, so as to keep the deformation of the spring 35 unchanged under the urging of the third sidewall 725 of the driving assembly receiving slot 71. The clockwise rotation and the anticlockwise rotation of the first driving piece 2 can respectively realize the swing of the nail head in different directions.

As shown in fig. 27, the first side wall 723 is a smooth transition arc with the third side wall 725 of the drive assembly receiving slot 71 not having the notch 72, so as to better guide the positioning member 4 to disengage from the notch 72 when rotating in the counterclockwise direction. Similarly, the second side wall 724 is a smooth curved surface with the third side wall 725, so as to better guide the positioning member 4 to disengage from the notch 72 when rotating in the clockwise direction.

In the third state shown in fig. 27, the first driving member 2 continues to rotate, which drives the positioning member 4 and the second driving member 3 to rotate continuously until the positioning member 4 is aligned with the next notch 72, and under the deformation restoring force of the spring 35, the positioning member 4 protrudes outward relative to the second driving member 3, so that the first end 41 of the positioning member 4 enters the currently aligned notch 72. At this time, when the operator releases the swing button 1, the inclined surface of the second slot 242 guides the protrusion 44 of the positioning member 4 to move from the second slot 242 to the central slot 243 again, and in the process, the first driving member 2 is driven to rotate clockwise relative to the second driving member 3 under the driving of the protrusion 44 of the positioning member 4, so that the first protrusion 31 returns to the central position of the first groove 221 again.

Fig. 28 to 32 are schematic structural views of a head swing mechanism according to another embodiment of the present invention. This embodiment differs from the embodiment shown in FIGS. 1-27 in that: the length of the first groove 221 in the circumferential direction of the drive disc 22 is substantially equal to the length of the first projection 31 in the axial direction of the drive disc 22. Therefore, in this embodiment, when the first driving member 2 is rotated from the initial state, the first driving member 2 immediately rotates the second driving member 3 by the cooperation of the first recess 221 and the first protrusion 31. In the situation of fig. 28, when the first driver 2 is rotated counterclockwise, i.e. into the situation shown in fig. 31, the retainer 4 is also rotated counterclockwise with the second driver 3, out of the recess 72.

As shown in fig. 29 and 30, in this embodiment, the first drive element 2 only rotates the second drive element 3, and no longer guides the initial retraction of the positioning element 4. The positioning member receiving groove 32 is not formed on the lower surface of the first driving member 2, and the protrusion 44 is not formed on the positioning member 4. Further, as shown in fig. 32, in order to better guide the disengagement of the keeper 4 from the notch 72 during the swing head operation, no retaining portion is provided in the notch 72 and the first and

second side walls

723, 724 extend substantially to the deepest end of the notch 72. When the first driving member 2 rotates the second driving member 3, the positioning member 4 is disengaged from the notch 72 under the pressing and guiding of the first side wall 723 and the second side wall 724.

The structure of this embodiment may also be combined with that of the first embodiment. For example, the matching structure of the first groove 221 and the first protrusion 31 shown in fig. 28 may be adopted, and the driving groove 24 and the protrusion 44 are still provided, the driving groove 24 may be only a circular groove adapted to the shape of the protrusion 44, or may be provided as a V-shaped through groove as in the first embodiment, and so on, all falling within the scope of the present invention.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. A head swinging mechanism is characterized by being used for a medical anastomat and comprising a head swinging pull rod, a driving assembly and a shell, wherein the driving assembly is matched with the head swinging pull rod so as to drive the head swinging pull rod to move along the axial direction of the anastomat when the driving assembly rotates, the shell is provided with a driving assembly accommodating groove for accommodating the driving assembly, and the inner side wall of the driving assembly accommodating groove is provided with at least one notch;

2. The wobble mechanism of claim 1, wherein the positioning element receiving slot is connected to an upper surface of the second driving element, and the first driving element at least partially covers the positioning element receiving slot.

3. The yaw mechanism of claim 2, wherein said first drive member includes a drive disk, said drive disk at least partially covering said keeper receiving slot;

4. The yaw mechanism of claim 3, wherein the first engagement portion and the second engagement portion are disposed along a circumferential direction of the drive plate, the first engagement portion is a first groove, and the second engagement portion is a first protrusion; or

The second matching part is a first groove, and the first matching part is a first protrusion.

5. The yaw mechanism of claim 4, wherein a length of the first groove in a circumferential direction of the drive plate is greater than a length of the first protrusion in the circumferential direction of the drive plate.

6. The yaw mechanism of claim 2, wherein the first drive member includes a drive plate, a middle portion of a lower surface of the drive plate being recessed upward to form a stepped surface at an outer periphery of the lower surface of the drive plate, the stepped surface being located outside the second drive member.

7. The yaw mechanism of claim 2, wherein the first driving member includes a driving disk, a driving groove is formed on a lower surface of the driving disk, and a protrusion is formed above the positioning member and at least partially enters the driving groove.

8. The yaw mechanism of claim 7, wherein said drive slot includes a first slot portion and a second slot portion, a central slot portion is formed between a first end of said first slot portion and a first end of said second slot portion, and said central slot portion is located away from an axial center of said drive plate relative to a second end of said first slot portion and a second end of said second slot portion, said drive slot forming a V-shaped communication slot having said central slot portion as an apex;

when the length of the positioning piece extending outwards relative to the second driving piece is the largest, at least part of the lug of the positioning piece enters the central groove part of the driving groove, and the first driving piece rotates, so that when the lug of the positioning piece moves along the first groove part or the second groove part, the driving groove presses the positioning piece to retract inwards relative to the second driving piece.

9. The head oscillating mechanism of claim 8, wherein the recess of the housing includes a first side wall and a second side wall opposite to each other, the protrusion of the positioning element is located in the first slot or the second slot, and when the first driving element continues to rotate, the positioning element continues to retract inward relative to the second driving element under the pressure of the first side wall or the second side wall.

10. The wobble mechanism as claimed in claim 1, wherein an elastic member is further disposed in the positioning member receiving slot, and when the positioning member is not inserted into the notch, the positioning member retracts into the positioning member receiving slot under the pressure of the inner sidewall of the driving assembly receiving slot, and presses the elastic member to deform.

11. The head oscillating mechanism according to claim 1, wherein the positioning element includes a first end, a stopping portion and a second end, the positioning element accommodating groove includes a middle accommodating portion and a front accommodating portion, the middle accommodating portion is closer to the axis of the second driving element relative to the front accommodating portion, the first end and the stopping portion of the positioning element are respectively located in the front accommodating portion and the middle accommodating portion, and the width of the front accommodating portion is smaller than the width of the stopping portion.

12. The wobble mechanism of claim 11, wherein the second end of the positioning member defines an elastic receiving slot facing the stopping portion, and the elastic receiving slot defines an elastic member therein.

13. The wobble mechanism of claim 11, wherein the positioning member receiving slot further comprises a terminal receiving portion communicating with the middle receiving portion, the second end of the positioning member is located in the terminal receiving portion, an elastic member is further disposed between the stopping portion of the positioning member and the second end of the positioning member, the elastic member is located in the middle receiving portion of the positioning member receiving slot, and a width of the elastic member is greater than a width of the terminal receiving portion.

14. The yaw mechanism of claim 11, wherein a protrusion is disposed between the first end of the positioning member and the stop portion, a driving groove is disposed on a bottom surface of the first driving member, and at least a portion of the protrusion enters the driving groove;

15. The yaw mechanism of claim 1, wherein the first drive member includes a drive shaft and a drive plate, and further comprising a yaw knob coupled to the drive shaft via a first coupling member such that rotation of the yaw knob rotates the first drive member.

16. The yaw mechanism of claim 1, wherein the drive assembly further comprises a third drive member, the third drive member cooperating with the second drive member such that rotation of the second drive member rotates the third drive member;

17. The yaw mechanism of claim 16, wherein the third drive member includes a boss portion and a disc portion disposed below the boss portion, the second drive member having a first mounting hole formed therein, the boss portion of the third drive member being inserted into the first mounting hole;

18. The wobble mechanism of claim 17, wherein a second connecting member is further disposed in the first mounting hole, a second mounting hole is disposed in the second driving member and connected to a side surface of the second driving member, a mating hole is disposed in the protruding portion of the third driving member, and the second connecting member is disposed through the second mounting hole and the mating hole.

19. The yaw mechanism of claim 16, wherein the third drive member is integrally formed with the second drive member.

20. The yaw mechanism of claim 1, wherein the notch comprises an initial position notch and a non-initial position notch, the initial position notch having a depth greater than a depth of the non-initial position notch.

21. A medical stapler, characterized in that it comprises a head swinging mechanism according to any one of claims 1 to 20.