CN109953788B - Handle assembly and anastomat comprising same - Google Patents
Handle assembly and anastomat comprising same Download PDFInfo
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- CN109953788B CN109953788B CN201711431490.0A CN201711431490A CN109953788B CN 109953788 B CN109953788 B CN 109953788B CN 201711431490 A CN201711431490 A CN 201711431490A CN 109953788 B CN109953788 B CN 109953788B
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- torsion spring
- anastomat
- pin shaft
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- 238000010304 firing Methods 0.000 claims abstract description 16
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 230000007704 transition Effects 0.000 claims description 2
- 230000033001 locomotion Effects 0.000 abstract description 12
- 238000000034 method Methods 0.000 description 15
- 210000003953 foreskin Anatomy 0.000 description 13
- 230000008569 process Effects 0.000 description 12
- 230000009471 action Effects 0.000 description 9
- 230000001960 triggered effect Effects 0.000 description 8
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 230000003872 anastomosis Effects 0.000 description 5
- 238000009527 percussion Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 3
- 206010028980 Neoplasm Diseases 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 210000001035 gastrointestinal tract Anatomy 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000003238 esophagus Anatomy 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 208000014617 hemorrhoid Diseases 0.000 description 1
- 230000000968 intestinal effect Effects 0.000 description 1
- 206010034878 phimosis Diseases 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
- A61B17/1114—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis of the digestive tract, e.g. bowels or oesophagus
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
- A61B17/115—Staplers for performing anastomosis in a single operation
- A61B17/1155—Circular staplers comprising a plurality of staples
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/3209—Incision instruments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/326—Circumcision apparatus
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00367—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
- A61B2017/1132—End-to-end connections
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
- A61B2017/1135—End-to-side connections, e.g. T- or Y-connections
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Physiology (AREA)
- Portable Nailing Machines And Staplers (AREA)
Abstract
The invention provides a handle assembly and an anastomat comprising the same, wherein the handle assembly comprises a first handle and a second handle, and a chute and a sliding block are arranged on the first handle; and a first pointer and a second pointer; the slider is located the second section of spout, and when first handle rotated to second handle and slider conflict along the second direction, second handle and first handle linkage, and the slider promotes the second end of second pointer to rotate along the second direction to make pointer reset structure produce the deformation. The invention divides the handle assembly into a first handle and a second handle; when the anastomat does not reach the triggerable state, the first handle can be pressed, but the second handle can not rotate, so that the anastomat can not be trigged; the pointer is divided into the first pointer and the second pointer, when the first handle and the second handle rotate together, the sliding block can push the second pointer to rotate, so that the pointer can not block the rotation of the handle assembly, smoothness of instrument movement during firing of the anastomat is guaranteed, and use experience of a user is improved.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to the technical field of anastomat, and particularly relates to a handle assembly and an anastomat comprising the same.
Background
Digestive tract tumor is one of the diseases of human high incidence, and in the treatment process, a circular tube type anastomat is often used for anastomosing physiological tissues such as digestive tract and the like instead of manual operation of doctors. The circular tube type anastomat is a common surgical instrument, and most of the circular tube type anastomat adopts an axial inner stapling mode, forms end-to-end or end-to-side anastomosis on physiological tissues such as esophagus, stomach, intestinal canal and the like during operation, is accommodated in the anastomat in a astringing way during anastomosis, forms a circular anastomosis opening on the tissues after the completion of percussion, and reconstructs a tissue channel.
In the prior art, the circular tube type anastomat comprises an anastomat body, a handle component movably connected with the anastomat body and a nail anvil component matched with the body. The anastomat body comprises a nail bin assembly arranged at the far end, and the nail bin assembly comprises an annular nail bin and a cutter; and a knob disposed at the proximal end of the body, the knob being rotatable relative to the body. The distal and proximal ends are here the proximal ends with respect to the operator, the ends closer to the operator being the proximal ends, the ends further from the operator, i.e. the ends closer to the surgical site being the distal ends. The nail anvil assembly comprises a nail anvil, a nail anvil cap arranged at the top of the nail anvil, a knife anvil arranged inside the nail anvil and a nail anvil shaft detachably connected with the anastomat body. In the operation process, after tumor tissues are removed by separation, the nail anvil shaft penetrates out of a purse at one end of the tissues and is configured at the far end of the anastomat body, and the knob is rotated, so that the distance between the nail anvil and the nail bin is gradually reduced to reach a proper distance, and then the nail anvil is in a triggerable state, and the handle triggering instrument can be held to complete anastomosis. Along with the continuous development of medical instruments, the circular tube type anastomat is also widely applied to the treatment of hemorrhoids and other diseases.
Meanwhile, in the operation of treating the overlong foreskin and phimosis in the field of urology surgery, another type of circular tube type anastomat, namely a foreskin anastomat, is also appeared. Foreskin staplers are also described in the prior art, which are structurally similar to the circular tubular staplers of the alimentary tract described above, except that a glans cap assembly is fitted with the body. Similarly, the glans cap assembly comprises a nail anvil, a glans cap fixedly connected with the nail anvil, a knife anvil and a center rod detachably connected with the anastomat body. In the operation process, foreskin tissues to be resected are fixed on a glans cap, then a center rod is arranged at the far end of the anastomat body, and a knob is rotated to gradually reduce the distance between the glans cap and a nail bin to a proper distance, so that the glans cap and the nail bin can be in a percussion state, and a handle percussion instrument can be held to complete anastomosis.
With the development of technology, the firing transmission mechanism of the circular tube type anastomat has been improved, and a safety mechanism is added, so that even if a doctor presses a handle when the anastomat does not reach a triggerable state, the handle can not be pressed due to the action of the safety mechanism, thereby avoiding operation failure caused by instrument firing. However, in practice, there are still some drawbacks, such as a poor experience for the doctor, and in addition, if the doctor presses the handle with force, the casing of the stapler may be cracked.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a handle assembly and an anastomat comprising the same, when the anastomat does not reach a triggerable state, the first handle and the second handle are not linked, so that the anastomat cannot be triggered, the pointer is divided into two sections, and when the first handle rotates, the pointer cannot block the rotation of the handle assembly.
An embodiment of the present invention provides a handle assembly for firing of a stapler, the handle assembly comprising:
the sliding block is slidably arranged in the sliding groove, and the first handle and the second handle are not linked when the sliding block is positioned at the first section of the sliding groove;
the first pointer is rotatably connected with the first end of the second pointer through a pointer resetting structure, and when the first pointer rotates along a first direction, the second end of the second pointer is driven to rotate along the first direction, and the sliding block is pushed to move from the first section of the sliding groove to the second section of the sliding groove;
the sliding block is located at the second section of the sliding groove, when the first handle rotates to the point that the sliding block is abutted against the second handle along the second direction, the second handle is linked with the first handle, and the sliding block pushes the second end of the pointer to rotate along the second direction, so that the pointer resetting structure deforms.
Optionally, the method further comprises:
the first torsion spring and the first pin shaft are arranged in the first handle and the second handle in a penetrating manner and are fixed on the shell of the anastomat, the first torsion spring is sleeved on the first pin shaft, and two ends of the first torsion spring respectively abut against the shell of the anastomat and the second handle;
the second torsion spring and the second pin shaft are fixed on the shell of the anastomat, the second torsion spring is sleeved on the second pin shaft, and two ends of the second torsion spring respectively abut against the shell of the anastomat and the first handle.
Optionally, the pointer reset structure includes a third round pin axle and a third torsional spring that overlaps to be located on the third round pin axle, the third round pin axle wears to locate the first end of second pointer and is fixed in first pointer, the both ends of third torsional spring are contradicted respectively first pointer and second pointer.
Optionally, the first pointer is provided with first torsional spring draw-in groove, the first end of second pointer is provided with the second torsional spring draw-in groove, the both ends of third torsional spring inlay respectively locate first torsional spring draw-in groove with in the second torsional spring draw-in groove.
Optionally, the pointer resetting structure comprises a third pin shaft and a tension spring, wherein the third pin shaft penetrates through the first end of the second pointer and is fixed to the first pointer, and the tension spring is arranged between the first pointer and the second pointer.
Optionally, the second end of the second pointer is curved towards the distal end of the stapler relative to the first end of the second pointer, and the transition between the first end to the second end of the second pointer is smooth.
Optionally, a positioning part is arranged between two ends of the first pointer, and the first pointer is rotatably connected to the casing of the anastomat through the positioning part.
Optionally, a fourth pin shaft is arranged in the positioning part in a penetrating way, a fourth torsion spring is sleeved on the fourth pin shaft, the fourth pin shaft is fixed on the shell of the anastomat, and two ends of the fourth torsion spring respectively abut against the shell of the anastomat and the first pointer.
Optionally, a protruding part is further provided between the first end of the first pointer and the positioning part, the second end of the first pointer is connected with the first end of the second pointer, the protruding part corresponds to the position of the drag hook of a pull tab, the proximal end of the pull tab is sleeved on the screw rod, a knob is provided at the proximal end of the screw rod, the knob is rotated to drive the pull tab to move towards the proximal end of the anastomat, and the pull tab can pull the first pointer to rotate along the first direction through the protruding part;
the first handle or the second handle is provided with a pull-tab abutting part, and when the first handle and the second handle rotate along the second direction, the pull-tab abutting part abuts against the pull tab, so that the drag hook of the pull tab is separated from the pointer.
Optionally, the first handle is further provided with a slider return spring, and when the slider is located at the second section of the sliding chute, the slider applies an acting force to the slider return spring to enable the slider return spring to be in a deformed state; and when the sliding block reset spring is restored to the initial state from the deformed state, the sliding block is driven to move from the second section of the sliding groove to the first section of the sliding groove.
Optionally, when the slider is located at the second section of the chute, the acting force of the slider return spring on the slider is smaller than the acting force of the pointer return structure on the pointer.
Optionally, the method further comprises:
the first torsion spring and the first pin shaft are arranged in the first handle and the second handle in a penetrating mode, the first pin shaft is fixed to the shell of the anastomat, the first torsion spring is sleeved on the first pin shaft, and two ends of the first torsion spring respectively abut against the shell of the anastomat and the second handle;
the handle reset pressure spring is connected between the first handle and the shell of the anastomat.
Optionally, the method further comprises:
the first torsion spring and the first pin shaft are fixed to the second handle and penetrate through the first handle, the first torsion spring is sleeved on the first pin shaft, and two ends of the first torsion spring respectively abut against the first handle and the second handle;
the second torsion spring and the second pin shaft are fixed on the shell of the anastomat and penetrate through the second handle, the second torsion spring is sleeved on the second pin shaft, and two ends of the second torsion spring respectively abut against the second handle and the shell of the anastomat.
The embodiment of the invention also provides an anastomat, which comprises the handle assembly.
The handle assembly and the anastomat comprising the same provided by the invention have the following advantages:
the invention provides a handle assembly and an anastomat comprising the same, wherein the handle assembly is divided into a first handle and a second handle, and only the movement of the second handle can trigger the anastomat to execute cutting and stitching actions; in the use process, no matter whether the anastomat reaches a triggerable state or not, a doctor can press the first handle, however, when the anastomat does not reach the triggerable state, the first handle does not drive the second handle, and the anastomat cannot be triggered; divide into first pointer and second pointer with the pointer, when first handle and second handle are rotatory together, the slider can promote the rotation of second pointer, therefore the pointer can not form the blocking to the rotation of handle subassembly, the smoothness of apparatus motion when guaranteeing the anastomat to fire, promotes user's use experience, and simultaneously when the firing is accomplished, the second pointer can return initial position through the pointer reset structure.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings.
FIG. 1 is a schematic view of a handle assembly for a stapler according to an embodiment of the present invention;
FIG. 2 is a schematic view of a handle assembly for a conventional tubular stapler according to an embodiment of the present invention;
figure 3 is a schematic view of the handle assembly for a foreskin stapler according to an embodiment of the invention;
FIGS. 4 to 9 are schematic views showing the structure of a handle assembly in an initial state according to an embodiment of the present invention;
FIG. 10 is a front view of a pointer according to an embodiment of the present invention;
FIG. 11 is a schematic view of a pointer rotated in a first direction in accordance with an embodiment of the present invention;
FIG. 12 is a schematic view of a second pointer rotating in a second direction according to an embodiment of the present invention;
FIG. 13 is a perspective view of a pointer according to an embodiment of the present invention;
FIG. 14 is an exploded view of a pointer according to an embodiment of the present invention;
FIGS. 15-17 are schematic illustrations of the structure of a handle assembly in a disabled state according to an embodiment of the present invention;
FIGS. 18-21 are schematic views of the handle assembly of an embodiment of the present invention in a fired state;
FIG. 22 is a schematic view of a slider pushing a second pointer to rotate when the handle assembly is in a firing state according to an embodiment of the present invention;
FIG. 23 is a schematic view showing a structure in which a pull tab pulls a first pointer to rotate according to an embodiment of the present invention;
FIG. 24 is a schematic view of a pull tab according to an embodiment of the present invention being ejected out of the way of the pointer;
fig. 25 is a schematic view showing the structure of a pointer in which the third torsion spring is replaced with a tension spring according to an embodiment of the present invention.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many 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 the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus a repetitive description thereof will be omitted.
Fig. 1 shows the structure of a stapler according to an embodiment of the present invention. Wherein the distal end of the stapler is provided with a cartridge assembly 72 and an anvil assembly 73, the proximal end is provided with a knob 71 and a handle assembly, the exterior of which is provided with a handle housing 16, by pressing the handle assembly, firing of the stapler can be achieved.
Fig. 2-9 illustrate the structure of the handle assembly in an initial state in which a portion of the housing or a portion of the assembly has been omitted for clarity of illustration of the structure of the handle assembly and its cooperation with other portions. To achieve the above object, the present invention divides the handle assembly into a first handle 1 and a second handle 2, and the stapler can be fired only when the second handle 2 is rotated. The first handle 1 and the second handle 2 are simultaneously provided with a first pin shaft 31 in a penetrating way, the first pin shaft 31 is fixed on a shell 74 of the anastomat, and a first torsion spring 32 is sleeved on the first pin shaft 31. The two ends of the first torsion spring 32 respectively abut against the housing 74 of the stapler and the second handle 2, and after the second handle 2 rotates, if the external force is released, the second handle 2 can be reset.
In addition, a second torsion spring 34 and a second pin 33 are provided for resetting the first handle 1. The second pin shaft 33 is fixed on the housing 74 of the anastomat, the second torsion spring 34 is sleeved on the second pin shaft 33, and two ends of the second torsion spring 34 respectively abut against the housing 74 of the anastomat and the first handle 1.
In order to realize the linkage of the first handle 1 and the second handle 2, a chute 41 and a sliding block 42 are also arranged on the first handle 1, the chute 41 comprises a first section 411 and a second section 412 which are communicated, and the second handle 2 comprises a handle abutting part 25; when the slider 42 is located at the first section 411 of the chute 41 and the first handle 1 is held to rotate in the second direction, the slider 42 does not collide with the handle collision portion 25, and the second handle 2 is located at the safety position, i.e. the first handle 1 is rotated but does not fire the stapler, and is in a failure state. In this embodiment, the second direction is a counterclockwise direction as shown in the drawing, but the present invention is not limited thereto. Thus, the doctor can easily rotate the first handle 1 while holding the first handle 1, but does not trigger the second handle 2, and the force for holding the first handle 1 is very small because of the empty firing state at this time. The doctor can also know that the state of the current anastomat is in an unfired state through the operation experience, and the shell of the anastomat cannot be broken.
When the slider 42 is located at the second section 412 of the chute 41 and the first handle 1 is held to rotate in the counterclockwise direction, the slider 42 abuts the handle abutting portion 25 and drives the second handle 2 to rotate from the safety position to the firing position. When the second handle 2 is rotated in a counterclockwise direction, the push rod 75 is simultaneously pushed to move towards the distal end of the stapler, thereby driving the firing stapler.
It should be noted that the first section 411 and the second section 412 of the chute 41 are a relative concept in the present invention, and not necessarily the two ends of the chute 41, i.e., the first section 411 of the chute 41 is located on the right side of the second section 412 in the view shown in the figure. The first handle 1 is held while the slider 42 is located in the first section 411 and the second section 412 of the chute 41, and the relationship between the slider 42 and the handle interference portion 25 is different: the slider 42 is located at the first section 411 of the chute 41 without interfering with the handle interference portion 25, and is located at the second section 412 of the chute 41 without interfering with the handle interference portion 25.
To effect sliding of the slider 42 in the chute 41, the handle assembly of this embodiment also includes a pointer. In this embodiment, the pointer includes a first pointer 81 and a second pointer 82, where the first pointer 81 is rotatably connected to a first end 821 of the second pointer 82 through a pointer resetting structure, and when the first end 811 of the first pointer 81 rotates from a first position area to a second position area along a first direction, the second end 822 of the second pointer 82 is driven to rotate clockwise, and the slider 42 is pushed to move from the first section 411 of the chute 41 to the second section 412 of the chute 41. In this embodiment, the first direction is clockwise as shown in the drawing, but the present invention is not limited thereto. Wherein, a window is provided on the stapler body corresponding to the first position area and the second position area for observing the position of the first end 811 of the first pointer 81 in the use process, the first end 811 of the first pointer 81 is in a safe state when in the first position area, the stapler cannot be fired at this time, and when the first end 811 of the first pointer 81 is in the second position area, the stapler can be fired, in order to more intuitively prompt the doctor, the second position area corresponding to the triggerable position area on the window is a green area.
The invention can be applied to not only the conventional circular tube type anastomat, but also the foreskin anastomat. Such as shown in fig. 3, the structure of the foreskin stapler body 9 to which the handle assembly is applied is shown. The distal end of foreskin stapler body 9 includes a cartridge assembly 91, and is additionally provided with a glans cap assembly (not shown) that mates with cartridge assembly 91. When the foreskin anastomat is adopted, the second handle 2 is movably connected to one end of the foreskin anastomat, the second end of the second handle 2 is matched with a nail pushing component of the foreskin anastomat, and when the condition that the foreskin anastomat can be triggered is met, the second handle 2 pushes the nail pushing component to trigger the foreskin anastomat.
Fig. 10 to 12 show the structure of the pointer in different states. The function of the pointer resetting structure is to keep the first pointer 81 rotating clockwise, and at the same time, the second pointer 82 can be driven to rotate clockwise, i.e. the pointer can rotate to the position shown by the broken line in fig. 11. When the second end 822 of the second pointer 82 receives a rightward force, the second pointer 82 rotates counterclockwise relative to the first pointer 81, that is, the second pointer 82 may rotate to the position shown by the dotted line in fig. 12, but after the rightward force is released, the second pointer 82 may return to the original solid line position by means of the restoring force of the pointer resetting structure. The purpose of this is to avoid the pointer from obstructing the movement path of the slider 42 when the first handle 1 and the second handle 2 are rotated in conjunction with each other. When the sliding block 42 is located at the second section 412 of the sliding groove 41 and the first handle 1 rotates anticlockwise, the sliding block 42 rotates along with the sliding block 42, at this time, the pointer still has a force to the left side on the sliding block 42, the sliding block 42 can avoid the pointer, and after the sliding block 42 collides with the handle collision portion 25 along with the continuous rotation of the first handle 1, the sliding block 42 cannot continue to avoid the pointer due to being blocked by the second handle 2, at this time, if an integral pointer which cannot be deformed is adopted, the pointer can form a blockage on the moving path of the sliding block 42, so that the rotating and firing process of the second handle 2 is not smooth, and the user experience is poor.
Thus, the present invention divides the pointer into two parts: when the first pointer 81 and the second pointer 82 cannot continue to avoid the pointers, the second pointer 82 rotates anticlockwise under the action of the slider 42 to avoid the slider 42, the pointer resetting structure is deformed in the rotating process, and after the first handle 1 is loosened, the second pointer 82 can rotate clockwise to return to the initial position under the recovery action of the pointer resetting structure. Therefore, by adopting the structure, the problem that the handle moves unsmoothly when the whole pointer is adopted to trigger the anastomat is solved, the pointer can not influence the normal triggering of the second handle 2 when in each position, and the pointer is allowed to interfere with other parts when the anastomat is designed, so that the structure of the more compact and small anastomat can be realized.
Fig. 13 to 14 show a specific structure of a pointer in this embodiment. The first pointer 81 includes a first end 811, a protrusion 813, a positioning portion 814, and a second end 812. The protruding part 813 corresponds to the position of the draw hook 61 of one pull tab 6, and the positioning part 814 is rotatably fixed to the housing 74 of the anastomat. The tail 62 of the pull tab 6 is secured to a lead screw 76 and moves with movement of the lead screw 76. When the knob 71 rotates in one direction, the screw rod 76 moves proximally, so as to drive the pull tab 6 to move proximally, and the pull hook 61 of the pull tab 6 can drive the first pointer 81 to rotate clockwise through the protruding part 813, so that the second pointer 82 also rotates, and further drive the sliding block 42 to move from the first section 411 of the sliding slot 41 to the second section 412 of the sliding slot 41.
In this embodiment, the slider reset structure includes a third pin 83 and a third torsion spring 84 sleeved outside the third pin 83. The third pin 83 is disposed through the first end 821 of the second pointer 82 and fixed to the first pointer 81. The first pointer 81 is provided with a first torsion spring clamping groove 841, the first end 821 of the second pointer 82 is provided with a second torsion spring clamping groove 842, and two ends of the 84 of the third torsion spring are respectively embedded in the first torsion spring clamping groove 841 and the second torsion spring clamping groove 842.
The positioning part 814 is penetrated with a fourth pin shaft 85, the fourth pin shaft 85 is sleeved with a fourth torsion spring 86, the fourth pin shaft 85 is fixed on the shell 74 of the anastomat, and two ends of the fourth torsion spring 86 respectively abut against the shell 74 and the first pointer 81 of the anastomat. The first pointer 81 can rotate about the fourth pin 84 when an external force is applied, and can be restored to the original position by the fourth torsion spring 86 when the external force is released.
In this embodiment, the second end 822 of the second pointer 82 is bent towards the distal end of the stapler relative to the first end 821 of the second pointer 82, and the first end 821 of the second pointer 82 is smoothly transited to the second end 822 to form an arc profile in a smooth form, which is favorable for smoother relative movement during avoidance, and the second pointer 82 adopts a sheet structure, for example, the design and use requirements are met in a narrow space inside the stapler.
In this embodiment, the first handle 1 includes a first cavity 13 having two side walls, two side walls of the first cavity 13 are respectively provided with a sliding slot 41, the sliding block 42 includes two sliding portions 421 and an abutting portion 422 between the sliding portions 421, and the two sliding portions 421 are respectively slidably disposed in the sliding slot 41. The handle housing 16 is arranged outside the first handle 1, and the handle housing 16 is also provided with a slot at a position corresponding to the chute 41, wherein the first end and the second end of the slot correspond to the first section 411 and the second section 412 of the chute 41 respectively. In order to realize the limit of the sliding block 42 after moving, the sliding portion 421 is provided with a first limit structure 43, a second limit structure is arranged at the second end of the slot, and a sliding block reset pressure spring 45 is respectively arranged between the first limit structure 43 and the second limit structure. When the slider 42 moves toward the first end 411 of the slide slot 411, the slider 42 applies a holding force to the slider return compression spring 45 to deform it.
Fig. 15 to 17 show the structure of the handle assembly of this embodiment in a failure state. In this state, since the pull tab 6 does not pull the first pointer 81, the position of the first pointer 81 does not change, the first end 811 of the first pointer 81 is located in the first position area, and the second pointer 82 does not apply force to the slider 42. The slider 42 is still located in the first section 411 of the chute 41, and the slider 42 does not interfere with the handle interference portion 25 of the second handle 2 in the rotational path of the first handle 1. In the initial position, the slider 42 is located at the end of the first section of the slide groove 41, which is far from the second section, i.e., the right end in the drawing, by the slider return compression spring 45. Of course, the second end 822 of the second pointer 82 may also limit the initial position of the slider 42. In this embodiment, the first end 11 of the first handle 1 is a grip portion and the second end 12 comprises a connection portion; the first end 21 of the second handle 2 is located inside the cavity of the connecting portion, and the second end 22 abuts against the ejector pin lever 75. At this point, the instrument is in a safe state. Because the torsion force of the second torsion spring 34 is much smaller than the trigger force, the first handle 1 can rotate anticlockwise around the first pin shaft 31 when being gripped by an operator, and the second handle 2 continues to enter the cavity of the first handle 1, i.e. the first handle 1 and the second handle 2 are in an unlink state, and the second handle 2 does not rotate. When the operator grips the first handle 1, the operator can easily rotate the first handle 1, but the operator can not drive the second handle 2 to rotate, so that the firing of the anastomat can not be completed. The operator can also get tactile feedback at this time, knowing that the current first pointer 81 has not reached the cocked position and has not been fired. When the external force is released, the first handle 1 is reset under the action of the second torsion spring 34.
Meanwhile, as shown in fig. 17, at this time, although the slider 42 is in contact with the second pointer 82, because the action of the slider return compression spring 45 is smaller than the force of the pointer return structure to the second pointer 82, the slider 42 can be pushed by the second pointer 82, and there is a small displacement along the arrow direction in the figure, so as to avoid the pointer.
Fig. 18 to 21 show the structure of the handle assembly of this embodiment in the fired state. In this process, turning the knob 71 causes the screw 76 to drive the pull tab 6 to move proximally, and drives the first pointer 81 to move clockwise to the second position area, so that the second pointer 82 pushes the slider 42 to move toward the second section 412 of the chute 41 to interfere with the handle abutting portion 25. When the first handle 1 is held for counterclockwise rotation, the slider 42 interferes with the handle interference portion 25 and blocks the second handle 2 from continuing into the interior cavity of the first handle 1. Thereby, the second handle 2 and the first handle 1 are in a interlocked state. The second handle 2 rotates anticlockwise with the first handle 1, the second end 22 of the second handle 2 pushes the ejector pin 75, and the ejector pin 75 further pushes the ejector pin sheet and the annular cutter of the anastomat to suture and cut the tissue subjected to the operation.
The slider return compression spring 45 is further compressed during the movement of the slider 42. The rotation process of the first handle 1 is divided into two steps: when the sliding block 42 does not collide with the second handle 2, the acting force of the third torsion spring 84 to the second pointer 82 is far greater than the force of the sliding block reset pressure spring 45 to the sliding block 42, so that the sliding block 42 can avoid the second pointer 82; after the sliding block 42 collides with the second handle 2, the sliding block 42 can not continue to avoid due to acting force between the second handle 2 and the first handle 1, so that the second pointer 82 can be pushed to rotate anticlockwise, and the second pointer 82 is enabled to avoid the sliding block 42. The movement trace of the second pointer 82 may be as shown in fig. 21 to 22. After the anastomat is completely triggered, the operator releases the first handle 1, and the deformation force of the slider return pressure spring 45 when the slider return pressure spring is restored can push the slider 42 to slide towards the first section 411 of the chute 41 again, so that the initial position is restored. And the second pointer 82 is rotated clockwise to be restored due to the force of the third torsion spring 84.
The resetting process of the first pointer 81 can be seen in fig. 23 and 24. In fig. 23, the drag hook 61 contacts the protrusion 813 and can rotate the first pointer 81 clockwise. The second handle 2 is further provided with a pull-tab abutting portion 23, and when the second handle 2 rotates from the safety position to the firing position, the pull-tab abutting portion 23 pushes up the pull tab 6 at the ejection apex 231, so that the drag hook 61 of the pull tab 6 is disengaged from the protruding portion 813. The disengaged state can be seen in fig. 24, at which the first pointer 81 is automatically restored to the original position by the fourth torsion spring 86. Since the first end 51 of the pointer 5 is returned to the first position area, the second end 52 of the pointer 5 is disengaged from the slider 42. Then, after losing the pushing force of the pointer 8, the slider 42 returns to the first section 411 of the chute 41 under the restoring force of the slider restoring compression spring 45, and the restoring is completed. After the percussion of the anastomat is finished, the first handle 1 is loosened, and the second handle 2 is returned to the safety position under the restoring force of the first torsion spring 31; the first handle 1 is engaged with the second handle 2 under the action of the slider, so that it firstly resets with the second handle 2, and simultaneously resets under the action of the second torsion spring 34.
Further, in this embodiment, a metal sheet 77 is provided in the housing 74 of the stapler at a position corresponding to the first end 811 of the first pointer 81, and when the first pointer 81 is restored to the initial position, it collides with the metal sheet 77 to make a sound to prompt the operator that the pointer has been restored.
In this embodiment, since the first handle 1 and the second handle 2 are both rotated around the first pin shaft 31, the rotation centers of the first handle 1 and the second handle 2 are unified, the experience of the operator is better, the rotation centers are unchanged in the failure state and the firing state, and the handle design opening is smaller, the appearance is better, and the structure of the handle assembly and the anastomat is more stable. Meanwhile, the pull-tab abutting part 23 is closer to the pull-tab contact point, so that the pull-tab 6 is easier to eject, and the phenomenon that the pointer is not returned due to ejection failure is not easy to occur.
However, the present invention is not limited thereto, and the first handle 1 and the second handle 2 may be connected by other manners, which are all within the scope of the present invention. For example, the second torsion spring and the second pin shaft for resetting the first handle can be replaced by at least one pressure spring, the pressure spring is connected between the first handle and the housing of the anastomat, when the first handle rotates, the compression spring is compressed to deform, and when the first handle is released, the pressure spring is restored to enable the first handle to reset. Further, a double rotation center mode can be adopted, for example, a first torsion spring and a first pin shaft are also arranged; and a second torsion spring and a second pin. The first pin shaft is fixed on the second handle and penetrates through the first handle, the first torsion spring is sleeved on the first pin shaft, and two ends of the first torsion spring respectively abut against the first handle and the second handle, so that the first handle can be reset; the second pin shaft is fixed in the shell of the anastomat and penetrates through the second handle, the second torsion spring is sleeved on the second pin shaft, and two ends of the second torsion spring respectively abut against the second handle and the shell of the anastomat, so that the second handle can be reset. The first and second handles rotate about the first and second torsion springs, respectively.
Only an alternative structure of the pointer is given here, but the present invention is not limited thereto. Other structural variations are also possible. For example, as shown in fig. 25, the third torsion spring 84 may be replaced with a tension spring 87, and the tension spring 87 may be provided between the first pointer 81 and the second pointer 82. When the second pointer 82 rotates counterclockwise relative to the first pointer 81, the tension spring 87 is pulled to deform the second pointer 82, and after the external force is released, the tension spring 87 is retracted to pull the second pointer 82 back.
The embodiment of the invention also provides a anastomat, which comprises the handle assembly. When the anastomat does not reach the triggerable state, the first handle does not drive the second handle, so that the anastomat is not triggered, a doctor can judge the triggerable state through operation experience, and only when the anastomat reaches the triggerable state, the movement of the first handle drives the movement of the second handle, so that the anastomat is triggered. Therefore, on the basis of avoiding the anastomat from being triggered by mistake, the case of the anastomat is prevented from cracking. The pointer is divided into the first pointer and the second pointer which are rotatably connected, the problem that the handles move unsmoothly when the whole pointer is adopted to trigger the anastomat is solved, the normal trigger of the second handles cannot be influenced when the pointer is arranged at each position, and the pointer is allowed to interfere with other parts when the anastomat is designed, so that the structure of the more compact and small anastomat and the smoother trigger process can be realized.
The handle assembly and the anastomat comprising the same provided by the invention have the following advantages:
the invention provides a handle assembly and an anastomat comprising the same, wherein the handle assembly is divided into a first handle and a second handle, and only the movement of the second handle can trigger the anastomat to execute cutting and stitching actions; in the use process, no matter whether the anastomat reaches a triggerable state or not, a doctor can press the first handle, however, when the anastomat does not reach the triggerable state, the first handle does not drive the second handle, and the anastomat cannot be triggered; divide into first pointer and second pointer with the pointer, when first handle and second handle are rotatory together, the slider can promote the rotation of second pointer, therefore the pointer can not form the blocking to the rotation of handle subassembly, the smoothness of apparatus motion when guaranteeing the anastomat to fire, promotes user's use experience, and simultaneously when the firing is accomplished, the second pointer can return initial position through the pointer reset structure.
The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.
Claims (14)
1. A handle assembly for firing of a stapler, the handle assembly comprising:
the sliding block is slidably arranged in the sliding groove, and the first handle and the second handle are not linked when the sliding block is positioned at the first section of the sliding groove;
the first pointer is rotatably connected with the first end of the second pointer through a pointer resetting structure, and when the first pointer rotates along a first direction, the second end of the second pointer is driven to rotate along the first direction, and the sliding block is pushed to move from the first section of the sliding groove to the second section of the sliding groove;
the sliding block is located at the second section of the sliding groove, when the first handle rotates to the point that the sliding block is abutted against the second handle along the second direction, the second handle is linked with the first handle, and the sliding block pushes the second end of the pointer to rotate along the second direction, so that the pointer resetting structure deforms.
2. The handle assembly of claim 1, further comprising:
the first torsion spring and the first pin shaft are arranged in the first handle and the second handle in a penetrating manner and are fixed on the shell of the anastomat, the first torsion spring is sleeved on the first pin shaft, and two ends of the first torsion spring respectively abut against the shell of the anastomat and the second handle;
the second torsion spring and the second pin shaft are fixed on the shell of the anastomat, the second torsion spring is sleeved on the second pin shaft, and two ends of the second torsion spring respectively abut against the shell of the anastomat and the first handle.
3. The handle assembly according to claim 1, wherein the pointer resetting structure comprises a third pin shaft and a third torsion spring sleeved on the third pin shaft, the third pin shaft is arranged at the first end of the second pointer in a penetrating manner and is fixed on the first pointer, and two ends of the third torsion spring respectively abut against the first pointer and the second pointer.
4. The handle assembly of claim 3, wherein the first pointer is provided with a first torsion spring slot, the first end of the second pointer is provided with a second torsion spring slot, and two ends of the third torsion spring are respectively embedded in the first torsion spring slot and the second torsion spring slot.
5. The handle assembly of claim 1, wherein the pointer resetting structure comprises a third pin passing through the first end of the second pointer and fixed to the first pointer, and a tension spring disposed between the first pointer and the second pointer.
6. The handle assembly of claim 1, wherein the second end of the second pointer is curved toward the distal end of the stapler relative to the first end of the second pointer, and wherein the transition between the first end to the second end of the second pointer is smooth.
7. The handle assembly of claim 1, wherein a positioning portion is provided between two ends of the first pointer, the first pointer being rotatably connected to the housing of the stapler by the positioning portion.
8. The handle assembly according to claim 7, wherein a fourth pin shaft is penetrated in the positioning part, a fourth torsion spring is sleeved on the fourth pin shaft, the fourth pin shaft is fixed on the housing of the anastomat, and two ends of the fourth torsion spring respectively abut against the housing of the anastomat and the first pointer.
9. The handle assembly according to claim 7, wherein a protruding portion is further provided between the first end of the first pointer and the positioning portion, the second end of the first pointer is connected to the first end of the second pointer, the protruding portion corresponds to a drag hook of a pull tab, the proximal end of the pull tab is sleeved on the lead screw, a knob is provided at the proximal end of the lead screw, the knob is rotated to drive the pull tab to move toward the proximal end of the stapler, and the pull tab can rotate in a first direction by pulling the first pointer through the protruding portion;
the first handle or the second handle is provided with a pull-tab abutting part, and when the first handle and the second handle rotate along the second direction, the pull-tab abutting part abuts against the pull tab, so that the drag hook of the pull tab is separated from the pointer.
10. The handle assembly of claim 1, wherein the first handle is further provided with a slider return spring, the slider exerting a force on the slider return spring to deform the slider return spring when the slider is positioned in the second section of the chute; and when the sliding block reset spring is restored to the initial state from the deformed state, the sliding block is driven to move from the second section of the sliding groove to the first section of the sliding groove.
11. The handle assembly of claim 10, wherein the force of the slider return spring on the slider is less than the force of the pointer return structure on the pointer when the first handle has not been rotated in the second direction until the second handle abuts the slider.
12. The handle assembly of claim 1, further comprising:
the first torsion spring and the first pin shaft are arranged in the first handle and the second handle in a penetrating mode, the first pin shaft is fixed to the shell of the anastomat, the first torsion spring is sleeved on the first pin shaft, and two ends of the first torsion spring respectively abut against the shell of the anastomat and the second handle;
the handle reset pressure spring is connected between the first handle and the shell of the anastomat.
13. The handle assembly of claim 1, further comprising:
the first torsion spring and the first pin shaft are fixed to the second handle and penetrate through the first handle, the first torsion spring is sleeved on the first pin shaft, and two ends of the first torsion spring respectively abut against the first handle and the second handle;
the second torsion spring and the second pin shaft are fixed on the shell of the anastomat and penetrate through the second handle, the second torsion spring is sleeved on the second pin shaft, and two ends of the second torsion spring respectively abut against the second handle and the shell of the anastomat.
14. A stapler comprising a handle assembly according to any one of claims 1 to 13.
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711431490.0A CN109953788B (en) | 2017-12-26 | 2017-12-26 | Handle assembly and anastomat comprising same |
| BR112020012558-0A BR112020012558B1 (en) | 2017-12-26 | 2018-12-12 | KNOB AND STAPLER SET INCLUDING THE SAME |
| US16/957,553 US11471160B2 (en) | 2017-12-26 | 2018-12-12 | Handle assembly and stapler including the same |
| JP2020554350A JP7029547B2 (en) | 2017-12-26 | 2018-12-12 | Handle assembly and anastomosis device including it |
| KR1020207019499A KR102443146B1 (en) | 2017-12-26 | 2018-12-12 | Handle assembly and anastomosis including same |
| CA3086804A CA3086804C (en) | 2017-12-26 | 2018-12-12 | Handle assembly and stapler including the same |
| EP18895634.6A EP3733089A4 (en) | 2017-12-26 | 2018-12-12 | Handle assembly and stapler comprising same |
| AU2018393322A AU2018393322B2 (en) | 2017-12-26 | 2018-12-12 | Handle assembly and stapler including the same |
| RU2020122630A RU2738427C1 (en) | 2017-12-26 | 2018-12-12 | Handle assembly and a stapling apparatus comprising the assembly |
| PCT/CN2018/120698 WO2019128720A1 (en) | 2017-12-26 | 2018-12-12 | Handle assembly and stapler comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711431490.0A CN109953788B (en) | 2017-12-26 | 2017-12-26 | Handle assembly and anastomat comprising same |
Publications (2)
| Publication Number | Publication Date |
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| CN109953788A CN109953788A (en) | 2019-07-02 |
| CN109953788B true CN109953788B (en) | 2024-02-13 |
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| CN201711431490.0A Active CN109953788B (en) | 2017-12-26 | 2017-12-26 | Handle assembly and anastomat comprising same |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2024017102A1 (en) * | 2022-07-18 | 2024-01-25 | 天臣国际医疗科技股份有限公司 | Firing mechanism and surgical stapler |
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| CN101991454A (en) * | 2010-12-10 | 2011-03-30 | 苏州天臣国际医疗科技有限公司 | Novel handle component |
| CN103142278A (en) * | 2012-12-28 | 2013-06-12 | 苏州天臣国际医疗科技有限公司 | Circular tube-type anastomat |
| CN104997541A (en) * | 2015-08-14 | 2015-10-28 | 上海逸思医疗科技有限公司 | One-hand operable surgical instrument and operation method thereof |
| CN107106180A (en) * | 2014-12-11 | 2017-08-29 | 柯惠有限合伙公司 | Stapling apparatus with automatic locking mechanism |
| CN208876647U (en) * | 2017-12-26 | 2019-05-21 | 苏州天臣国际医疗科技有限公司 | Handle assembly and stapler including it |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7364061B2 (en) * | 2003-09-29 | 2008-04-29 | Ethicon Endo-Surgery, Inc. | Surgical stapling instrument incorporating a multistroke firing position indicator and retraction mechanism |
| US8113405B2 (en) * | 2008-09-03 | 2012-02-14 | Tyco Healthcare Group, Lp | Surgical instrument with indicator |
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|---|---|---|---|---|
| CN101991454A (en) * | 2010-12-10 | 2011-03-30 | 苏州天臣国际医疗科技有限公司 | Novel handle component |
| CN103142278A (en) * | 2012-12-28 | 2013-06-12 | 苏州天臣国际医疗科技有限公司 | Circular tube-type anastomat |
| CN107106180A (en) * | 2014-12-11 | 2017-08-29 | 柯惠有限合伙公司 | Stapling apparatus with automatic locking mechanism |
| CN104997541A (en) * | 2015-08-14 | 2015-10-28 | 上海逸思医疗科技有限公司 | One-hand operable surgical instrument and operation method thereof |
| CN208876647U (en) * | 2017-12-26 | 2019-05-21 | 苏州天臣国际医疗科技有限公司 | Handle assembly and stapler including it |
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| CN109953788A (en) | 2019-07-02 |
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Address after: 215123 No. 278 Dongping Street, Suzhou Industrial Park, Suzhou City, Jiangsu Province Applicant after: Tianchen International Medical Technology Co.,Ltd. Address before: 215021, 1355 international science and Technology Park, Jinji Lake Avenue, Suzhou Industrial Park, Jiangsu, 3 21A Applicant before: TOUCHSTONE INTERNATIONAL MEDICAL SCIENCE Co.,Ltd. |
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