CN109953790B - Handle assembly and anastomat comprising same - Google Patents

Handle assembly and anastomat comprising same Download PDF

Info

Publication number
CN109953790B
CN109953790B CN201711434138.2A CN201711434138A CN109953790B CN 109953790 B CN109953790 B CN 109953790B CN 201711434138 A CN201711434138 A CN 201711434138A CN 109953790 B CN109953790 B CN 109953790B
Authority
CN
China
Prior art keywords
handle
section
anastomat
sliding
sliding block
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201711434138.2A
Other languages
Chinese (zh)
Other versions
CN109953790A (en
Inventor
陈志�
郭毅
林江
徐晓伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Tianchen International Medical Technology Co Ltd
Original Assignee
Suzhou Tianchen International Medical Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to CN201711434138.2A priority Critical patent/CN109953790B/en
Application filed by Suzhou Tianchen International Medical Technology Co Ltd filed Critical Suzhou Tianchen International Medical Technology Co Ltd
Priority to AU2018398829A priority patent/AU2018398829B2/en
Priority to KR1020207019455A priority patent/KR102410828B1/en
Priority to JP2020535540A priority patent/JP7029539B2/en
Priority to RU2020124375A priority patent/RU2738580C1/en
Priority to EP18894080.3A priority patent/EP3733087A4/en
Priority to US16/957,564 priority patent/US11350941B2/en
Priority to CA3087301A priority patent/CA3087301C/en
Priority to BR112020012735-3A priority patent/BR112020012735A2/en
Priority to PCT/CN2018/120697 priority patent/WO2019128719A1/en
Publication of CN109953790A publication Critical patent/CN109953790A/en
Application granted granted Critical
Publication of CN109953790B publication Critical patent/CN109953790B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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, the first handle and the second handle can rotate around a pin shaft, the second handle is reset through a torsion spring, the first handle is reset through a handle reset pressure spring, a sliding block and a sliding groove are arranged on the first handle or the second handle, and when the sliding block moves from a first section to a second section of the sliding groove, the first handle and the second handle enter a linkage state from an unlink state. 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; through the design of torsional spring, round pin axle and pressure spring, but first handle and second handle swivelling joint and can realize resetting, realized that two handles are rotatory around same rotation center, and failure condition and firing state's rotation center is unchangeable, and the structure is more stable, and operator's use experience is better.

Description

Handle assembly and anastomat comprising same
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, and the rotation centers of the two handles are unified.
An embodiment of the present invention provides a handle assembly for firing of a stapler, the handle assembly comprising:
a first handle and a second handle;
the torsion spring and the pin shaft are fixed on the shell of the anastomat and penetrate through the first handle and the second handle, the torsion spring is sleeved on the pin shaft, and two ends of the 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;
the sliding chute is arranged on the first handle or the second handle, the sliding chute comprises a first section and a second section which are communicated, and the sliding block can be arranged in the sliding chute in a sliding manner;
when the sliding block is positioned at the first section of the sliding groove, the first handle and the second handle are not linked; when the sliding block is positioned at the second section of the sliding groove, the first handle and the second handle are linked through the sliding block.
Optionally, the chute is located on the first handle, and the second handle includes a handle interference portion;
when the sliding block is positioned at the first section of the sliding groove and the first handle rotates along the first direction, the sliding block does not collide with the handle collision part, and the second handle is positioned at the safety position;
when the sliding block is positioned at the second section of the sliding groove and the first handle rotates along the first direction, the sliding block is abutted against the handle abutting part and drives the second handle to rotate from the safety position to the firing position.
Optionally, the first handle includes the first cavity that has both sides lateral wall, two lateral walls of first cavity are provided with one respectively the spout, the slider includes the conflict portion between two sliding part and the sliding part, two sliding part slidable respectively set up in one in the spout.
Optionally, the sliding part is provided with first limit structure, the tip of the second section of spout is provided with second limit structure, first limit structure with be provided with a slider pressure spring that resets between the second limit structure respectively.
Optionally, a handle shell is further arranged outside the first handle, a slot is also arranged at a position of the handle shell corresponding to the sliding chute, and the slot comprises a first section and a second section which respectively correspond to the first section and the second section of the sliding chute; the sliding part is provided with a first limit structure, the end part of the slotted second section is provided with a second limit structure, and a sliding block reset pressure spring is respectively arranged between the first limit structure and the second limit structure.
Optionally, a torsion spring limiting part is further included between the two sliding parts of the sliding block, and a sliding block reset torsion spring is further arranged between the torsion spring limiting part and the second handle.
Optionally, the first end of the first handle is a grip portion, and the second end of the first handle includes a connecting portion; the first end of the second handle is positioned in the cavity of the connecting part;
when the sliding block is positioned at the first section of the sliding groove and the first handle rotates along the first direction, the second handle continuously enters the cavity of the first handle;
when the sliding block is positioned at the first section of the sliding groove and the first handle rotates along the first direction, the sliding block stops the second handle from continuously entering the cavity of the first handle.
Optionally, the inner walls of the shells at two sides of the anastomat are respectively provided with a fixing column for fixing the end parts of the pin shafts, the inner walls of the shells of the anastomat are also provided with a shell fixing part, the second end of the first handle is also provided with a handle fixing part, and two ends of the handle reset pressure spring are respectively fixed at the shell fixing part and the handle fixing part.
Optionally, a support column is arranged in the anastomat, two ends of the support column are respectively fixed on two side shells of the anastomat, a first end of the torsion spring is abutted against the support column, and a second end of the torsion spring is abutted against the inner wall of the second handle;
a fixing plate is arranged between the support column and the shell of the anastomat, one end of the fixing plate is provided with an arc-shaped groove which partially covers the support column, and the other end of the fixing plate is fixed to the shell of the anastomat;
the handle reset pressure spring is positioned in a space formed between the fixed plate and the first handle.
Optionally, the chute is located on the second handle, and the first handle includes a handle interference portion;
when the sliding block is positioned at the first section of the sliding groove and the first handle rotates along the first direction, the handle abutting part does not abut against the sliding block, and the second handle is positioned at the safety position;
when the sliding block is positioned at the second section of the sliding groove and the first handle rotates along the first direction, the handle abutting part abuts against the sliding block and drives the second handle to rotate from the safety position to the firing position.
Optionally, the device further comprises a pointer, wherein the pointer comprises a first end, a positioning end and a second end, and the positioning end of the pointer is rotatably fixed on the shell of the anastomat; the pointer is connected to the drag hook of the pull tab, the proximal end of the pull tab is sleeved on the screw rod, the proximal end of the screw rod is provided with a knob, the knob is rotated to drive the pull tab to move towards the proximal end of the anastomat, the pull tab drives the first end of the pointer to move from a first position area to a second position area, and the second end of the pointer drives the sliding block to move from the first section of the sliding groove to the second section of the sliding groove.
Optionally, the second handle includes a pull-tab interference portion, when the second handle is rotated from the safety position to the firing position, the pull-tab interference portion interferes with the pull-tab, so that the drag hook of the pull-tab is disengaged from the pointer.
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 fire the anastomat; 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; through the design of torsional spring, round pin axle and pressure spring, but first handle and second handle swivelling joint and can realize resetting, realized that first handle and second handle are rotatory around same rotation center, and failure mode and firing state's rotation center is unchangeable, and the structure is more stable, and operator's use experience is better.
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 stapler according to an embodiment of the present invention;
FIG. 2 is a schematic view of a handle assembly according to an embodiment of the present invention applied to a conventional circular tube-type stapler;
figure 3 is a schematic view of the handle assembly of one embodiment of the present invention as applied to a foreskin stapler;
FIGS. 4 and 5 are schematic views showing the structure of a handle assembly according to an embodiment of the present invention in an initial state;
FIG. 6 is an exploded view of a handle assembly in an initial state according to one embodiment of the present invention;
FIG. 7 is a schematic illustration of the connection of a first handle and a second handle in accordance with an embodiment of the present invention;
FIG. 8 is a schematic view of the slider and pointer combination of FIG. 2;
FIG. 9 is a schematic illustration of the tab and pointer engagement of FIG. 2;
FIGS. 10-12 are schematic illustrations of the structure of a handle assembly in a disabled state according to an embodiment of the present invention;
FIG. 13 is an exploded view of a handle assembly in a disabled state in accordance with one embodiment of the present invention;
FIG. 14 is a schematic view of the slider and pointer combination of FIG. 10;
FIGS. 15-17 are schematic illustrations of the handle assembly in a fired state according to one embodiment of the present invention;
FIG. 18 is an exploded view of a handle assembly in a fired state according to one embodiment of the present invention;
FIG. 19 is a schematic view of the slider and pointer combination of FIG. 15;
FIG. 20 is a schematic view of a handle assembly according to another embodiment of the present invention in an initial state;
FIG. 21 is a schematic view of a handle assembly in a disabled state according to another embodiment of the present invention;
FIG. 22 is a schematic view of a handle assembly in a fired state according to another embodiment of the present invention;
fig. 23 is a schematic structural view of a handle assembly according to yet another 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 pin shaft 31 in a penetrating way, the pin shaft 31 is fixed on a shell 74 of the anastomat, and a torsion spring 32 is sleeved on the pin shaft 31. The two ends of the torsion spring 32 respectively abut against the housing 74 of the stapler and the second handle 2, and after the second handle 2 is rotated, if the external force is released, the second handle 2 can be reset.
Because the first handle 1 and the second handle 2 are both rotated around the pin shaft 31, the rotation centers of the first handle 1 and the second handle 2 are unified, the experience of an operator is better, the rotation centers are unchanged in the failure state and the firing state, meanwhile, the opening of the handle design is smaller, the appearance is better, and the structure of the handle assembly and the anastomat is more stable. For fixing the pin 31, in this embodiment, the inner walls of the two side housings 74 of the stapler are provided with fixing posts for fixing the ends of the pin 31, respectively. The two ends of the pin shaft 31 are respectively inserted into the corresponding fixing columns.
Furthermore, one or more handle return compression springs 35 are provided, which are connected at both ends to the first handle 1 and to the housing 74 of the stapler, respectively, for return of the first handle 1. Specifically, a handle fixing portion 352 may be provided on the first handle 1, a housing fixing portion 351 may be provided on the housing 74 of the stapler, and both ends of the handle return compression spring 35 are respectively fixed to the handle fixing portion 352 and the housing fixing portion 351. When the first handle 1 is in the initial state, the handle reset pressure spring 35 is not deformed, however, when the first handle 1 is rotated counterclockwise by an external force, the handle reset pressure spring 35 is pressed to deform, and when the external force is released, the restoring force of the handle reset pressure spring 35 can enable the first handle 1 to restore to the initial state. Only one handle reset pressure spring 35 is shown in the figure, and in practical application, the number and the type of the pressure springs can be selected according to practical needs, which are all within the protection scope of the present invention.
The arrangement of the pin and the compression spring can be seen in the structure shown in fig. 2. A support column 742 is arranged in the anastomat and used for limiting the position of the first end of the first torsion spring 32 on the shell, two ends of the support column 742 are respectively fixed on two side shells 74 of the anastomat, the first end of the torsion spring 31 is abutted against the support column 742, and the second end of the torsion spring 31 is abutted against the inner wall of the second handle 2; a fixing plate 743 is arranged between the support column 742 and the shell 74 of the anastomat, one end of the fixing plate 743 is provided with an arc-shaped groove 744 for partially coating the support column, and the other end of the fixing plate 743 is fixed to the shell 74 of the anastomat to play a role in reinforcing the shell; the handle return compression spring 35 is located in a space formed between the fixing plate 743 and the first handle 1. Through this kind of structural layout, make full use of the interior space of anastomat to each part has carried out fine support, can obtain the overall structure of compacter compactness.
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 first 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 first direction is a counterclockwise direction as shown in the drawings, 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 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.
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 a slot is also arranged at a position of the handle housing 16 corresponding to the sliding groove 41, and the first section and the second section of the slot respectively correspond to the first section 411 and the second section 412 of the sliding groove 41. In order to realize the limit of the sliding block 42 after moving, the sliding part 421 is provided with a first limit structure 43, the end part of the slotted second section is provided with a second limit structure, and a sliding block reset pressure spring 45 is respectively arranged between the first limit structure 43 and the second limit structure.
The movement of the slider 42 from the first section 411 to the second section 412 of the chute 41 is controlled by means of the pointer 5. The pointer 5 comprises a first end 51, a positioning end 53 and a second end 52, the first end 51 of the pointer 5 is provided with a protruding part 54, the protruding part 54 corresponds to the position of a draw hook 61 of a pull tab 6, and the positioning end 53 of the pointer 5 is rotatably fixed on a shell 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 a direction, the screw 76 moves proximally, driving the pull tab 6 to move proximally, and the pull hook 61 of the pull tab can drive the first end 51 of the pointer 5 to rotate in a second direction, so that when the first end 51 of the pointer 5 moves from the first position area to the second position area, the second end 52 of the pointer 5 further drives the slider 42 to move from the first section 411 of the chute 41 to the second section 412 of the chute 41. In this embodiment, the second direction is a clockwise direction as shown in the drawing, but the present invention is not limited thereto. Wherein, a window is provided on the anastomat body corresponding to the first position area and the second position area for observing the position of the first end 51 of the pointer in the use process, the first end 51 of the pointer is in a safe state when in the first position area, the anastomat can not be fired at this moment, and the anastomat can be fired when the first end 51 of the pointer is in the second position area, in order to more intuitively prompt a doctor, the second position area corresponding to the triggerable area on the window is a green area, and the prior art has been disclosed.
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 8 to which the handle assembly is applied is shown. The distal end of foreskin stapler body 8 includes a cartridge assembly 81, and is additionally provided with a glans cap assembly (not shown) that mates with cartridge assembly 81. 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 14 show the structure of the handle assembly of this embodiment in a disabled state. In this state, since the position of the tab 6 where the pointer 5 is not pulled does not change, the position of the first segment 51 of the pointer 5 does not change, and the slider 42 is still located in the first position region, and the slider 42 does not interfere with the handle abutting portion 25 of the second handle 2 in the rotation path of the first handle 1, while the slider 42 is still located in the first segment 411 of the slide groove 41. 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 52 of the pointer 41 may also be used to limit the initial position of the slider 3. 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 compression force of the handle reset compression spring 35 is much smaller than the trigger force, when the first handle 1 is subjected to a smaller holding force by an operator, the first handle 1 can rotate anticlockwise around the pin shaft 31, the second handle 2 continues to enter the cavity of the first handle 1, namely, 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 press the first handle, but the operator can not drive the second handle 2 to rotate, and the firing of the anastomat can not be completed. The operator can also get tactile feedback at this time, knowing that the second end of the current pointer 5 has not reached the second position area, and has not been fired. When the external force is released, the first handle 1 is reset under the action of the reset compression spring 35.
Fig. 15-19 illustrate the handle assembly of this embodiment in a fired position. In this state, turning the knob 71 causes the screw 76 to drive the pull tab 6 to move proximally, and drives the first end 51 of the pointer 5 to move clockwise, so that the first end 51 of the pointer 5 enters the second position area from the first position area, and the second end 52 of the pointer 5 pushes the slider 42 to move toward the second section 412 of the chute 41 to interfere with the handle interference 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 along with the first handle 1, the second end of the second handle 2 pushes the ejector pin rod 75, and the ejector pin rod 75 further pushes the ejector pin sheet and the annular cutter of the anastomat to suture and cut the tissue subjected to the operation.
As can be seen from fig. 15 to 19, the slide return compression spring 45 is further compressed during the displacement of the slide 42. 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 can jack up the pull tab 6 at the ejection vertex 231 position, so that the drag hook 61 of the pull tab 6 is separated from the pointer 5. At this time, the pointer 5 is automatically restored to the initial position by the return spring. With the single rotation center structure of this embodiment, the tab abutting portion 23 is closer to the tab contact point, the tab 6 is easier to be ejected, and the phenomenon that the pointer does not return due to ejection failure is not easy to occur. 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 5, 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 reset under the restoring force of the torsion spring 31; the first handle 1 is engaged with the second handle 2 by the action of the slider, so that it firstly resets with the second handle 2, and at the same time resets under the action of the reset compression spring 35.
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 51 of the pointer 5, and when the pointer 5 is restored to the initial position, it collides with the metal sheet 77 to make a sound to inform the operator that the pointer 5 has been restored.
Further, in this embodiment, as shown in fig. 11, in order to limit the position of the first handle 1 at the initial position and prevent the opening angle of the first handle 1 from being excessively large, a limiting pin 14 is provided in the cavity of the second end 12 of the first handle 1, and a second handle limiting portion 24 is provided at the first end 21 of the second handle 2; when the first handle 1 is not rotated under pressure, the limit pin 14 abuts against the handle limit portion 24 to block the first handle 1 from rotating clockwise in the drawing, and an accurate initial position is given to the first handle 1 in an initial state. However, the limit pin 14 and the second handle limit portion 24 have no effect on the counterclockwise rotation of the first handle 1 and therefore do not affect the normal operation of the handle assembly. Meanwhile, with this arrangement, the initial position of the second handle 2 can also be defined.
Fig. 20 to 22 are schematic structural views of a handle assembly according to another embodiment of the present invention. In this embodiment, the technical contents different from the previous embodiment are: the second limiting structure for limiting the slider return compression spring 45 is directly arranged at the end part of the second section 412 of the chute 41. Further, in this embodiment, the contact between the first handle 1 and the housing 74 of the stapler is provided with a first handle limiting portion 15, and the housing 74 of the stapler is correspondingly provided with a housing limiting portion 741; when the first handle 1 is not rotated under pressure, the first handle limit portion 15 abuts against the housing limit portion 741 to block the first handle 1 from rotating in the clockwise direction.
As shown in fig. 20, the handle assembly is in the initial state, the pull tab 6 does not pull the pointer 5 to rotate, the pointer 5 is in the first position area, and the slider 42 is positioned in the first section 411 of the chute 41. As shown in fig. 21, the handle assembly is in a disabled state, the second handle 2 continues to enter the cavity of the first handle 1, the two are not linked, and the first handle 1 is held to enable the firing of the anastomat. As shown in fig. 22, the handle assembly is in the firing state, the knob 71 is rotated to enable the pull tab 6 to pull the pointer 5 to rotate clockwise, the sliding block 42 slides to the second section 412 of the sliding groove 41 to hold the first handle 1, and meanwhile, the second handle 2 is driven to rotate anticlockwise to push the staple pushing rod 75, so that the firing of the stapler is completed. After firing, the reset state of each component is the same as that of the previous embodiment, and will not be described in detail herein.
Because of the distance between the handle end and the housing, it is often difficult for an operator to determine whether the stapler is in a fully fired condition. Thus, in this embodiment, a rubber spike 78 is also provided on the housing 74 of the stapler, and when the first handle 1 is held, the tail of the first end of the first handle 1 is adjacent to the rubber spike 78, which visually indicates to the operator that the first end 11 of the first handle 1 has reached the housing 74 of the stapler and that the stapler is fired in place.
Fig. 23 is a schematic structural view of a handle assembly according to still another embodiment of the present invention. The difference between the two embodiments is that the handle reset pressure spring 35 is disposed at the other side of the first handle 1, and similarly, when the first handle 1 is pressed, the handle reset pressure spring 35 can be compressed, and after the first handle 1 is released, the handle reset pressure spring 35 can reset the first handle 1. In this embodiment, the handle return compression spring 35 may be arranged between the first handle 1 itself and the housing 74 of the stapler, or between the handle housing 16 and the housing 74 of the stapler.
The above-mentioned three alternative embodiments of the present invention are only three alternative embodiments, and in practical application, other modifications and combinations may be selected, which fall within the protection scope of the present invention. For example, the slide groove and the slider are not limited to be provided on the first handle, but may be provided on the second handle, and the first handle has a handle abutting portion accordingly. The second handle has a second cavity, and the second end portion of the first handle is located inside the second cavity. When the sliding block is positioned at the first section of the sliding groove and the first handle rotates along the first direction, the handle abutting part does not abut against the sliding block, the first handle continuously enters the cavity of the second handle, and the second handle is positioned at the safety position; when the sliding block is positioned at the second section of the sliding groove, and the first handle rotates along the first direction, the handle abutting part abuts against the sliding block to prevent the first handle from continuously entering the cavity of the second handle, so that the second handle is driven to rotate from the safety position to the firing position, and the firing of the anastomat is realized.
In addition, the resetting mode of the sliding block is not limited to a mode of adopting a pressure spring, and a torsion spring limiting part can be arranged between two sliding parts of the sliding block, and a sliding block resetting torsion spring is arranged between the torsion spring limiting part and the second handle. The torsion spring limiting part can be a groove for limiting one end of the slider reset torsion spring. When the sliding block slides from the first section to the second end of the sliding groove, the sliding block reset torsion spring is extruded to deform, and after the external force applied to the sliding block is relieved, the restoring force of the sliding block reset torsion spring can push the sliding block to the initial position.
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. In addition, the rotary centers of the first handle and the second handle are unified, so that the whole structure of the anastomat is more stable, and the opening of the handle in the shell can be designed smaller, thereby having more attractive appearance.
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; through the design of torsional spring, round pin axle and pressure spring, but first handle and second handle swivelling joint and can realize resetting, realized that first handle and second handle are rotatory around same rotation center, and failure mode and firing state's rotation center is unchangeable, and the structure is more stable, and operator's use experience is better.
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 (13)

1. A handle assembly for firing of a stapler, the handle assembly comprising:
a first handle and a second handle;
the torsion spring and the pin shaft are fixed on the shell of the anastomat and penetrate through the first handle and the second handle, the torsion spring is sleeved on the pin shaft, and two ends of the 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;
the sliding chute is arranged on the first handle or the second handle, the sliding chute comprises a first section and a second section which are communicated, and the sliding block can be arranged in the sliding chute in a sliding manner;
when the sliding block is positioned at the first section of the sliding groove, the first handle and the second handle are not linked; when the sliding block is positioned at the second section of the sliding groove, the first handle and the second handle are linked through the sliding block.
2. The handle assembly of claim 1, wherein the chute is located on the first handle and the second handle includes a handle interference portion;
when the sliding block is positioned at the first section of the sliding groove and the first handle rotates along the first direction, the sliding block does not collide with the handle collision part, and the second handle is positioned at the safety position;
when the sliding block is positioned at the second section of the sliding groove and the first handle rotates along the first direction, the sliding block is abutted against the handle abutting part and drives the second handle to rotate from the safety position to the firing position.
3. The handle assembly of claim 2, wherein the first handle comprises a first cavity having two side walls, the two side walls of the first cavity are respectively provided with one of the sliding grooves, the slider comprises two sliding portions and an abutting portion between the sliding portions, and the two sliding portions are respectively slidably disposed in one of the sliding grooves.
4. A handle assembly according to claim 3, wherein the sliding portion is provided with a first limit structure, the end of the second section of the chute is provided with a second limit structure, and a slider return compression spring is provided between the first limit structure and the second limit structure, respectively.
5. A handle assembly according to claim 3, wherein the exterior of the first handle is further provided with a handle housing, the handle housing also being provided with a slot in a position corresponding to the chute, the slot comprising a first section and a second section corresponding to the first section and the second section of the chute, respectively; the sliding part is provided with a first limit structure, the end part of the slotted second section is provided with a second limit structure, and a sliding block reset pressure spring is respectively arranged between the first limit structure and the second limit structure.
6. A handle assembly according to claim 3, further comprising a torsion spring stop between the two sliding portions of the slider, and a slider return torsion spring is further provided between the torsion spring stop and the second handle.
7. A handle assembly according to claim 3, wherein the first end of the first handle is a grip portion and the second end of the first handle includes a connecting portion; the first end of the second handle is positioned in the cavity of the connecting part;
when the sliding block is positioned at the first section of the sliding groove and the first handle rotates along the first direction, the second handle continuously enters the cavity of the first handle;
when the sliding block is positioned at the second section of the sliding groove and the first handle rotates along the first direction, the sliding block stops the second handle from continuously entering the cavity of the first handle.
8. The handle assembly according to claim 1, wherein the inner walls of the casings on both sides of the stapler are respectively provided with a fixing post for fixing the end of the pin shaft, the inner wall of the casing of the stapler is further provided with a casing fixing portion, the second end of the first handle is further provided with a handle fixing portion, and both ends of the handle reset compression spring are respectively fixed to the casing fixing portion and the handle fixing portion.
9. The handle assembly according to claim 8, wherein a support column is arranged in the anastomat, two ends of the support column are respectively fixed on two side shells of the anastomat, a first end of the torsion spring is abutted against the support column, and a second end of the torsion spring is abutted against the inner wall of the second handle;
a fixing plate is arranged between the support column and the shell of the anastomat, one end of the fixing plate is provided with an arc-shaped groove which partially covers the support column, and the other end of the fixing plate is fixed to the shell of the anastomat;
the handle reset pressure spring is positioned in a space formed between the fixed plate and the first handle.
10. The handle assembly of claim 1, wherein the chute is located on the second handle, the first handle including a handle interference portion;
when the sliding block is positioned at the first section of the sliding groove and the first handle rotates along the first direction, the handle abutting part does not abut against the sliding block, and the second handle is positioned at the safety position;
when the sliding block is positioned at the second section of the sliding groove and the first handle rotates along the first direction, the handle abutting part abuts against the sliding block and drives the second handle to rotate from the safety position to the firing position.
11. The handle assembly of claim 2 or 10, further comprising a pointer, the pointer comprising a first end, a positioning end, and a second end, the positioning end of the pointer being rotatably secured to the housing of the stapler;
the pointer is connected to the drag hook of the pull tab, the proximal end of the pull tab is sleeved on the screw rod, the proximal end of the screw rod is provided with a knob, the knob is rotated to drive the pull tab to move towards the proximal end of the anastomat, the pull tab drives the first end of the pointer to move from a first position area to a second position area, and the second end of the pointer drives the sliding block to move from the first section of the sliding groove to the second section of the sliding groove.
12. The handle assembly of claim 11, wherein the second handle includes a tab interference portion that interferes with the tab when the second handle is rotated from the secured position to the firing position to disengage the drag hook of the tab from the pointer.
13. A stapler comprising a handle assembly according to any one of claims 1 to 12.
CN201711434138.2A 2017-12-26 2017-12-26 Handle assembly and anastomat comprising same Active CN109953790B (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
CN201711434138.2A CN109953790B (en) 2017-12-26 2017-12-26 Handle assembly and anastomat comprising same
BR112020012735-3A BR112020012735A2 (en) 2017-12-26 2018-12-12 lever and stapler assembly including the same
JP2020535540A JP7029539B2 (en) 2017-12-26 2018-12-12 Handle assembly and stapler containing it
RU2020124375A RU2738580C1 (en) 2017-12-26 2018-12-12 Assembled handle and a stapling apparatus comprising a handle assembly
EP18894080.3A EP3733087A4 (en) 2017-12-26 2018-12-12 Handle assembly and stapler comprising same
US16/957,564 US11350941B2 (en) 2017-12-26 2018-12-12 Handle assembly and stapler including the same
AU2018398829A AU2018398829B2 (en) 2017-12-26 2018-12-12 Handle assembly and stapler including the same
KR1020207019455A KR102410828B1 (en) 2017-12-26 2018-12-12 Handle assembly and stapler comprising same
PCT/CN2018/120697 WO2019128719A1 (en) 2017-12-26 2018-12-12 Handle assembly and stapler comprising same
CA3087301A CA3087301C (en) 2017-12-26 2018-12-12 Handle assembly and stapler including the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711434138.2A CN109953790B (en) 2017-12-26 2017-12-26 Handle assembly and anastomat comprising same

Publications (2)

Publication Number Publication Date
CN109953790A CN109953790A (en) 2019-07-02
CN109953790B true CN109953790B (en) 2024-02-13

Family

ID=67022274

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711434138.2A Active CN109953790B (en) 2017-12-26 2017-12-26 Handle assembly and anastomat comprising same

Country Status (1)

Country Link
CN (1) CN109953790B (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN206261635U (en) * 2016-08-25 2017-06-20 江苏明朗医疗器械科技有限公司 Single use cast stapler
CN107106180A (en) * 2014-12-11 2017-08-29 柯惠有限合伙公司 Stapling apparatus with automatic locking mechanism
CN208876646U (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

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN206261635U (en) * 2016-08-25 2017-06-20 江苏明朗医疗器械科技有限公司 Single use cast stapler
CN208876646U (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

Also Published As

Publication number Publication date
CN109953790A (en) 2019-07-02

Similar Documents

Publication Publication Date Title
AU2018398829B2 (en) Handle assembly and stapler including the same
AU2018396724B2 (en) Handle assembly and stapler including the same
AU2018393359C1 (en) Handle assembly and stapler including the same
JP7029548B2 (en) Handle assembly and anastomosis device including it
CN109953793B (en) Handle assembly and anastomat comprising same
CN109953795B (en) Circular tube type anastomat
CN109953788B (en) Handle assembly and anastomat comprising same
CN109953790B (en) Handle assembly and anastomat comprising same
CN109953789B (en) Handle assembly and anastomat comprising same
AU2018393322B2 (en) Handle assembly and stapler including the same
CN109953794B (en) Handle assembly and anastomat comprising same
CN109953792B (en) Handle assembly and anastomat comprising same
CN109953791B (en) Handle assembly and anastomat comprising same
CN111345862A (en) Firing mechanism and anastomat
RU2738212C9 (en) Assembled handle and a stapler including such a handle
AU2018398858B2 (en) Handle assembly and stapler including the same

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
CB02 Change of applicant information
CB02 Change of applicant information

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.

GR01 Patent grant
GR01 Patent grant