CN209996393U

CN209996393U - Closing driving mechanism and medical anastomat comprising same

Info

Publication number: CN209996393U
Application number: CN201920473305.2U
Authority: CN
Inventors: 叶艳平; 郭毅; 单腾; 傅开芬
Original assignee: Suzhou Tianchen International Medical Technology Co Ltd
Current assignee: Suzhou Tianchen International Medical Technology Co Ltd
Priority date: 2019-04-09
Filing date: 2019-04-09
Publication date: 2020-01-31
Anticipated expiration: 2029-04-09

Abstract

The utility model provides an kind of closed actuating mechanism reaches medical anastomat including it, closed actuating mechanism includes the actuating lever, the activity handle, the slider, stops piece, steering assembly and closed driving piece, steering assembly connects between slider and closed driving piece, under the initial condition, the slider is located the near-end that stopped the piece, and stops the piece and is located the below in slider axial motion route, when gripping the activity handle, the activity handle promotes slider and actuating lever to the distal end direction motion of anastomat simultaneously, steering assembly converts the slider to the motion of the distal end direction of anastomat into the motion of closed driving piece to the near-end direction of anastomat, the slider moves to the distal end that stopped the piece, and the actuating lever oppresses the slider downwards so that stops and gets into in the axial motion route of slider, the utility model discloses a position of closed actuating mechanism is injectd when stopping the pin head portion when avoiding the anastomat to close the pulling-on piece to the distal end direction motion of anastomat when.

Description

Closing driving mechanism and medical anastomat comprising same

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to kinds of closed actuating mechanism reach medical anastomat including it.

Background

The digestive tract diseases are high-incidence diseases of human beings, and in the treatment process, a medical anastomat is often used for replacing the manual operation of a doctor to perform anastomosis on physiological tissues such as the digestive tract and the like, the medical anastomat is common surgical operation instruments, most of the medical anastomats adopt an axial internal stapling mode, end-to-end or end-to-side anastomosis is formed on the physiological tissues such as esophagus, stomach and intestinal tract during operation, two sections of tissues are contained in the medical anastomat in an astringing mode during anastomosis, a circular anastomotic stoma is formed on the tissues after the completion of percussion, and a human body channel is reconstructed.

In the prior art, a medical anastomat comprises a medical anastomat body, an operating handle movably connected with the medical anastomat body and a nail head matched with the medical anastomat body, wherein the nail head comprises a nail bin and a nail anvil which are arranged oppositely, when in operation, the movable handle is firstly held, a closing pull sheet of the nail head is pulled by a closing driving mechanism to move towards the near end of the anastomat, so that after the nail bin and the nail anvil are closed, the operating handle is held again, so that anastomotic nails can be pushed to move towards tissues, and the tissues are anastomosed by forming the anastomotic nails in the nail bin at the nail anvil component.

In the existing closing driving mechanism, the structure is complex, and in the process of firing the anastomat, the closing pull piece may be displaced towards the far end direction of the anastomat, so that the closing effect between the nail bin and the nail anvil is influenced, and the operation effect is adversely affected.

SUMMERY OF THE UTILITY MODEL

To the problem among the prior art, the utility model aims to provide kinds of closed actuating mechanism and including its medical anastomat, inject closed actuating mechanism's position when blocking the piece and closing the pin fin portion, closed pulling-on piece is to the distal end direction motion of anastomat when avoiding the anastomat percussion.

The embodiment of the utility model provides kinds of closed drive mechanisms for medical anastomat, closed drive mechanism includes actuating lever, activity handle, slider, stop piece, steering component and closed driving piece, steering component connects between slider and the closed driving piece, under the initial condition, the slider is located the near end of stop piece, and stop piece is located the below of slider axial motion route;

when the movable handle is held, the movable handle simultaneously pushes the slider and the actuating rod to move towards the far end direction of the anastomat, the steering component converts the movement of the slider towards the far end direction of the anastomat into the movement of the closing driving piece towards the near end direction of the anastomat, the slider moves to the far end of the stopping piece, and the actuating rod presses the slider downwards to enable the stopping piece to enter the axial movement path of the slider.

Optionally, the steering assembly includes a pulley located at the proximal end of the slider and a pull cord sleeved outside the pulley, and the pull cord is connected between the slider and the closing driving member.

Optionally, a pull rope passing groove is formed in the upper surface of the sliding block, and the pull rope passes through the groove and extends along the axial direction of the anastomat.

Optionally, the closing driving mechanism further includes a supporting plate, in an initial state, the supporting plate is located at a distal end of the sliding block, and when the movable handle is held, the sliding block moves to a position above the supporting plate, and the sliding block drives the supporting plate to move downward.

Optionally, biasing members are provided below the platform, which bias the platform towards the top.

Optionally, the upper surface of the proximal end of the plate is provided with step surfaces, and in the initial state, the lower surface of the stop is in contact with the step surfaces.

Optionally, an step surface is provided on the upper surface of the distal end of the supporting plate, and the closing driving mechanism further includes a second stopper, and in an initial state, the second stopper is in contact with the step surface.

Optionally, the closing driving mechanism further includes a third blocking member, the third blocking member has a blocking surface, in an initial state, the supporting plate is located above the blocking surface and has clearance with the blocking surface, and when the sliding block drives the supporting plate to move downward, the supporting plate contacts with the blocking surface.

Optionally, the top of the distal end and the top of the proximal end of the slider are respectively provided with a th inclined surface and a th inclined surface, the th inclined surface is inclined upwards from the distal end to the proximal end, and the second inclined surface is inclined upwards from the proximal end to the distal end.

Optionally, the medical stapler comprises a stapler body and a closing pull piece located inside the stapler body, the closing driving piece is sleeved outside the closing pull piece, and the closing driving piece and the closing pull piece are axially fixed.

Optionally, the outside of the closing pull piece is further sleeved with an sleeve, the closing driving piece is sleeved outside the sleeve, a stroke groove extending along the axial direction of the anastomat is formed in the side face of the sleeve, a connecting pin is arranged in the closing driving piece and inserted into the stroke groove, and the connecting pin can move along the extending direction of the stroke groove.

Optionally, the proximal end of the closure drive is provided with biasing element that biases the closure drive in the direction of the distal end of the stapler.

Optionally, the movable handle is connected to link, and when the movable handle is held, the distal end of the link pushes the slider to move towards the distal end of the anastomat.

The embodiment of the utility model provides an kinds of medical anastomats still, including arbitrary item the closed actuating mechanism.

The utility model provides a closed actuating mechanism reaches medical anastomat including it has following advantage:

the utility model provides an kind are used for closed actuating mechanism of medical anastomat, and closed actuating mechanism's position when blocking the part and closing the pin fin portion is injectd, and closed pulling-on piece moves to the distal end direction of anastomat when avoiding the anastomat percussion to guarantee the closed stability of pin fin portion among the anastomat percussion process, promote the operation effect.

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 view of a closure drive mechanism engaged with a housing in an initial state according to an embodiment of the present invention ;

FIG. 2 is a schematic view of the closure actuation mechanism of embodiment of the present invention in an initial state in cooperation with other components of the stapler;

fig. 3 is a schematic view of the slider and the stopper in an initial state according to an embodiment of the present invention ;

FIG. 4 is a perspective view of the closure actuation mechanism of an embodiment of the present invention in an initial state in cooperation with other components of a stapler;

fig. 5 is a schematic structural view of a closure driving mechanism in an initial state according to an embodiment of the present invention ;

fig. 6 is a schematic structural view of an embodiment showing the distal face of the closure actuator;

fig. 7 is a schematic view of the position of the slider and the stopper after holding the movable handle according to the embodiment of the present invention.

Reference numerals:

1 stapler body 61 Limit stop

11 fixed handle 62 second stop

12 sleeve 63 third stop

121 travel slot 8 actuator lever

13 pull tab 81 pushing teeth

2 housing 82 rack

3 Movable handle 83 firing piece

31 claw 91 pull rope

4 connecting rod 92 pulley

51 slider 93 closure drive

511 groove 94 second compression spring

512 th slope 95 connecting pin

513 second inclined plane

514 draw cord passing through slot

52 pallet

521 step surface

53 st pressure spring

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.

In order to solve the technical problem in the prior art, the utility model provides a close actuating mechanism for medical anastomat and medical anastomat including this nail storehouse, the anastomat includes pin head and anastomat body, be provided with in the anastomat body and be used for closing the closed pulling-on piece of pin head, close actuating mechanism is including being used for medical anastomat, close actuating mechanism includes actuating rod, activity handle, slider, stops, turns to subassembly and closed driving piece, turn to the subassembly and connect in between the slider and the closed driving piece, under the initial condition, the slider is located the near end that stopped, and the stops being located the slider axial motion route's below, therefore, the stops can not stop the slider along the motion of axial direction.

When the movable handle is held, the movable handle simultaneously pushes the sliding block and the actuating rod to move towards the distal direction of the anastomat, the steering component converts the movement of the sliding block towards the distal direction of the anastomat into the movement of the closing driving component towards the proximal direction of the anastomat, so that the closing pull piece is pulled to move towards the proximal direction of the anastomat to close the nail head, the sliding block moves to the distal end of the stopping piece, and the actuating rod presses the sliding block downwards to enable the stopping piece to enter the axial movement path of the sliding block.

The structure of the staple cartridge and the medical stapler according to the embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in fig. 1 to 7, in this embodiment, the stapler includes a stapler body 1 and a nail head (not shown) at a distal end of the stapler body 1, the stapler body 1 includes a housing 2 and a fixed handle 11, a closing pull tab 13 for closing and opening the nail head is further provided inside the stapler body 1, a sleeve 12 is sleeved outside the closing pull tab 13, the closing driving mechanism includes an actuating rod 8, a movable handle 3, a slider 51, an -th blocking member 61, a steering assembly and a closing driving member 93, the steering assembly is connected between the slider 51 and the closing driving member 93, the slider 51 is located at a proximal end of the -th blocking member 61 in an initial state, the -th blocking member 61 is located below an axial moving path of the slider 51, i.e., does not block an axial movement of the slider 3551, the -th blocking member 61 may be fixed to the housing 2, or may be fixed to other mechanisms in the stapler body 1, and a position of the -th blocking member relative to the housing 2 is unchanged during firing and resetting of the stapler.

The movable handle 3 is connected to link 4, the movable handle 3 is provided with a pawl 3. when the movable handle 3 is held, the movable handle 3 pushes the actuating rod 8 to move towards the distal direction of the stapler through the pawl 31, and pushes the slider 51 to move towards the distal direction of the stapler through the link 4. in preferred embodiment, the distal end of the actuating rod 8 is movably provided with a firing member 83, the firing member 83 can rotate 360 ° relative to the actuating rod 8. the steering assembly converts the movement of the slider 51 towards the distal direction of the stapler into the movement of the closing driver 93 towards the proximal direction of the stapler to close the head by closing 13. the slider 51 moves to the distal end of the stop 61, and the firing member 83 presses the slider 51 downward to cause the stop 3561 to enter the axial movement path of the slider 51, so that the stop 61 blocks the movement of the slider 51 towards the proximal direction of the stapler.

The distal end and the proximal end are relative to the operator, wherein the distal end refers to the end which is farther from the operator and the proximal end refers to the end which is closer to the operator, for example, in the view of fig. 1, the distal end of the stapler body 1 is the end on the left in the figure and the right end of the stapler body 1 is the end on the right in the figure, the axial direction of the medical stapler refers to the direction from the proximal end of the medical stapler toward the distal end, i.e., the direction of extension of the cannula 12 in fig. 1, for components, the outer side refers to the side which is farther from the axial center of the stapler and the inner side refers to the side which is closer to the axial center of the stapler, for components, the upper side refers to the upper side in the view of fig. 1 and the lower side refers to the lower side in the view of fig. 1.

In this embodiment, the steering assembly includes a pulley 92 and a pull cord 91, the pulley 92 is located at the proximal end of the slider 51, the pull cord 91 is disposed outside the pulley 92, and the pull cord 91 is connected between the slider 51 and the closure drive member 93. By the configuration of the rope 91 and the pulley 92, the movement of the slider 51 can be converted into a reverse driving force to be transmitted to the closing driving member 93. As shown in fig. 6, a pull rope passing groove 514 is formed on the upper surface of the slider 51, the pull rope passing groove 514 extends along the axial direction of the stapler, and the pull rope 91 extends from the closing driving member 91, passes through the pull rope passing groove 514, is sleeved outside the pulley 92, enters the groove 511 of the slider 51, and is fixed with the slider 51.

As shown in fig. 2 to 6, the closing driving mechanism further includes a supporting plate 52, in an initial state, the supporting plate 52 is located at the far end of the slider 51, when the movable handle 3 is held, the slider 51 moves above the supporting plate 52, and the slider 51 drives the supporting plate 52 to move downward, step surfaces 521 are arranged on the upper surface of the near end of the supporting plate 52, and in an initial state, the lower surface of the blocking member 61 contacts with the step surfaces 521, so that the blocking member 61 not only can block the near end movement of the slider 51 after the nail head is closed, but also can limit the initial position of the supporting plate 52, that is, in an initial state, the height of the supporting plate 52 cannot exceed the height of the blocking member 61.

An biasing member is provided below the carriage 52 and biases the carriage 52 upwardly, in this embodiment a compression spring 53, a biasing member is provided at the proximal end of the closure driver 93 and biases the closure driver 93 in a distal direction of the stapler, in this embodiment a second compression spring 94.

After the slider 51 is moved to above the platform 52 while holding the movable handle 3, the slider 51 drives the platform 52 to move downward under the pressure of the actuating rod 8, and presses the compressed spring 53 to deform, and the closing driving member 93 moves to the proximal direction of the stapler and presses the second compressed spring 94 to deform, after the stapler is fired, the actuating rod 8 needs to be pulled back to the initial position in the proximal direction of the stapler during the reset, the actuating rod 8 no longer presses the slider 51, the platform 52 can move upward under the deformation restoring force of the compressed spring 53, and drives the slider 51 to move upward above the barrier 61, the barrier 61 simultaneously limits the position of the upward movement of the platform 52, and the upward movement of the platform 52 is prevented from exceeding the height of the initial position, at this time, the barrier 61 no longer interferes with the axial movement of the slider 51, i.e., the movement of the slider 51 to the proximal direction of the stapler is no longer blocked, and the closing driving member 93 moves to the distal direction of the stapler under the deformation restoring force of the second compressed spring 94, and converts the movement of the slider 51 to the proximal direction of the stapler, and pulls the slider to the proximal direction.

As shown in FIG. 5, in this embodiment, the upper surface of the distal end of the platform 52 is also provided with a step 521, the closure driving mechanism further comprises a second stop 62, the second stop 62 initially contacts the step 521, the second stop 62 and the stop 61 together define the initial position of the platform 621 and a height at which the platform 621 does not exceed the initial position during upward movement, the second stop 62 can be fixed to the housing 2 or other mechanisms within the stapler body 1, and the position of the second stop 62 relative to the housing 2 does not change during firing and resetting of the stapler.

As shown in FIGS. 3 and 7, in this embodiment, the closure driving mechanism further includes a third stopping member 63, the third stopping member 63 has a stopping surface, in the initial state, the supporting plate 52 is above the stopping surface and has clearance with the stopping surface, the supporting plate 52 contacts with the stopping surface when the slider 51 drives the supporting plate 52 to move downwards, the third stopping member 63 can limit the downward movement stroke of the supporting plate 52, so as to prevent the supporting plate 52 from moving too much under the inertia effect, the third stopping member 63 can be fixed on the housing 2, or can be fixed on other mechanisms in the stapler body 1, and the position of the third stopping member 63 relative to the housing 2 is not changed during the stapling and resetting processes.

The distal end of the actuating rod 8 is provided with a pushing tooth 81, the proximal end of the pushing tooth 81 is provided with a rack 82, when the stapler is closed by holding the movable handle 3, the pawl 31 of the movable handle 3 pushes the pushing tooth 81 of the actuating rod 8, so that the actuating rod 8 moves towards the distal end of the stapler, and the actuating rod 8 presses the slider 51 downwards, at this time, the pawl 31 is located at a position corresponding to the rack 82, when the movable handle 3 is switched to the cockable mode, the pawl 31 pushes the rack 82 of the actuating rod 8, so that the actuating rod 8 continues to move towards the distal end of the stapler, the actuating rod 8 pushes the firing member 83 at the distal end of the actuating rod 8 to fire the stapler, at this time, the rack 82 presses the slider 51 downwards, after the slider 51 moves above the platform 52, since the actuating rod 8 moves towards the distal end during the distal movement and during the return movement towards the proximal end, the top of the slider 51 will contact the top surface of the slider 51, and the top of the proximal end of the slider 51 is provided with a third inclined surface and a second inclined surface 513, which, the second inclined surface inclines upwards from the distal end towards the proximal end of the actuating rod 513, and the slider 512, especially the second inclined surface is inclined surface .

In this embodiment, as shown in fig. 4 and 6, the closing driving member 93 is sleeves sleeved on the outer portion of the closing pull tab 13, and the closing driving member 93 is axially fixed to the closing pull tab 13, where axially fixed means that there is no relative movement between the closing driving member 93 and the closing pull tab 13 along the axial direction of the stapler, if the closing driving member 93 moves axially toward the proximal end or the distal end of the stapler, the closing pull tab 13 is linked with the closing driving member 93, and step , the closing driving member 93 is sleeved on the outer portion of the sleeve 12, the side surface of the sleeve 12 is opened with a stroke groove 121 extending along the axial direction of the stapler, a connecting pin 95 is disposed in the closing driving member 93, the connecting pin 95 is inserted into the stroke groove 121, and the connecting pin 95 is movable along the extending direction of the stroke groove 121, the stroke groove 121 communicates the inner side surface and the outer side surface of the sleeve 12, and the connecting pin 95 is through pins, the closing driving member 93 is fixedly connected with the closing pull tab 13 by the connecting pin 95, and the sleeve 12 moves circumferentially around the closing driving member 93.

It will be apparent to those skilled in the art that a number of simple inferences or substitutions can be made without departing from the spirit and scope of the invention and these should be construed as within the scope of the invention.

Claims

A closure drive mechanism of for use in a medical stapler, said closure drive mechanism including an actuation lever, a movable handle, a slider, a th stop, a steering assembly and a closure drive member, said steering assembly being connected between said slider and said closure drive member, said slider being initially located proximal to said th stop and said th stop being located below the path of axial movement of said slider;

when the movable handle is held, the movable handle simultaneously pushes the slider and the actuating rod to move towards the far end direction of the anastomat, the steering component converts the movement of the slider towards the far end direction of the anastomat into the movement of the closing driving piece towards the near end direction of the anastomat, the slider moves to the far end of the stopping piece, and the actuating rod presses the slider downwards to enable the stopping piece to enter the axial movement path of the slider.
2. The closure drive mechanism of claim 1, wherein the steering assembly includes a pulley at the proximal end of the slider and a pull cord that is disposed externally of the pulley and is coupled between the slider and the closure drive member.
3. The closure driving mechanism according to claim 2, wherein a pull rope passing groove is formed on an upper surface of the slider, and the pull rope passing groove extends in an axial direction of the stapler.
4. The closure drive mechanism of claim 1, further comprising a support plate, wherein the support plate is located at a distal end of the slider in an initial state, and wherein when the movable handle is held, the slider moves above the support plate and the slider moves the support plate downward.
5. The closure drive mechanism of claim 4, wherein an bias is provided below the blade, the bias biasing the blade upward.
6. The closure drive mechanism of claim 4, wherein an upper surface of the proximal end of the blade is provided with an step surface, and wherein, in the initial state, a lower surface of the stop is in contact with the step surface.
7. The closure drive mechanism of claim 4, wherein an upper surface of the distal end of the blade is provided with an step surface, the closure drive mechanism further comprising a second stop, the second stop being in contact with the step surface in an initial state.
8. The closure drive mechanism of claim 4, further comprising a third stop member having a stop surface, wherein in the initial state, the blade is above the stop surface and spaced from the stop surface, and wherein the blade contacts the stop surface when the slider moves the blade downward.
9. The closure drive mechanism of claim 1, wherein the top of the distal end and the top of the proximal end of the slider are provided with th ramp and a second ramp, respectively, the th ramp sloping upward from the distal end to the proximal end thereof, and the second ramp sloping upward from the proximal end to the distal end thereof.
10. The closure driving mechanism as claimed in claim 1, wherein the medical stapler comprises a stapler body and a closure pull-tab located inside the stapler body, the closure driving member is sleeved outside the closure pull-tab, and the closure driving member is axially fixed with the closure pull-tab.
11. The closure driving mechanism as claimed in claim 10, wherein an sleeve is further sleeved on an outer portion of the closure pull tab, the closure driving member is sleeved on an outer portion of the sleeve, a stroke slot extending along an axial direction of the stapler is formed on a side surface of the sleeve, a connecting pin is disposed in the closure driving member, the connecting pin is inserted into the stroke slot, and the connecting pin is movable along an extending direction of the stroke slot.
12. The closure drive mechanism of claim 1, wherein a proximal end of the closure drive is provided with biasing element that biases the closure drive in a distal direction of the stapler.
13. The closure drive mechanism according to claim 1, wherein the movable handle is connected to linkage, and when the movable handle is grasped, the distal end of the linkage pushes the slider in a direction toward the distal end of the stapler.
14, A medical stapler, comprising a closure driving mechanism according to any of claims 1 to 13.