WO2023109820A1 - Mécanisme de commutation de fermeture et agrafeuse médicale - Google Patents

Mécanisme de commutation de fermeture et agrafeuse médicale Download PDF

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Publication number
WO2023109820A1
WO2023109820A1 PCT/CN2022/138722 CN2022138722W WO2023109820A1 WO 2023109820 A1 WO2023109820 A1 WO 2023109820A1 CN 2022138722 W CN2022138722 W CN 2022138722W WO 2023109820 A1 WO2023109820 A1 WO 2023109820A1
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WO
WIPO (PCT)
Prior art keywords
closing
switching
rod assembly
driving
connecting rod
Prior art date
Application number
PCT/CN2022/138722
Other languages
English (en)
Chinese (zh)
Inventor
丁水澄
史晓杰
Original Assignee
天臣国际医疗科技股份有限公司
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 claimed from CN202123139600.0U external-priority patent/CN217118484U/zh
Priority claimed from CN202111529336.3A external-priority patent/CN116262059A/zh
Priority claimed from CN202123142827.0U external-priority patent/CN217118488U/zh
Priority claimed from CN202111529332.5A external-priority patent/CN116262057A/zh
Priority claimed from CN202123139637.3U external-priority patent/CN217118485U/zh
Priority claimed from CN202111529338.2A external-priority patent/CN116262061A/zh
Application filed by 天臣国际医疗科技股份有限公司 filed Critical 天臣国际医疗科技股份有限公司
Publication of WO2023109820A1 publication Critical patent/WO2023109820A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
    • A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
    • 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

Definitions

  • the invention relates to the technical field of medical instruments, in particular to a closed switching mechanism and a medical stapler.
  • the medical stapler includes a medical stapler body, a firing handle movably connected to the medical stapler body, and a nail head matched with the body.
  • the nail head includes a nail cartridge assembly and a nail anvil which are oppositely arranged.
  • the operator first holds the firing handle, and pulls the closing tab to move toward the proximal side of the stapler through the closing switching mechanism, thereby closing the staple cartridge assembly and the staple anvil, that is, closing the staple head.
  • the operator holds the firing handle again, and can push the staples to move toward the tissue.
  • the tissues are anastomosed.
  • the cutter moves to the distal side to cut the tissue. Realize the triggering of the stapler.
  • the existing closing switching mechanism the structure is relatively complicated, and after the stapler is fired, it may be difficult to open the nail head, which brings inconvenience to the operator.
  • the object of the present invention is to provide a closing switching mechanism and a medical stapler, by operating the switching driving member to move in different directions, the manual closing and manual opening of the nail head can be realized.
  • An embodiment of the present invention provides a closed switching mechanism for a medical stapler, the stapler includes a stapler body, and the closed switching mechanism includes:
  • closing pull rod assembly is pivotally connected to the second pivot joint
  • switching driving member is configured to be operable to drive the linkage assembly from the second state into the first state, and the second pivot portion drives the closing pull rod assembly to the second direction sports.
  • the linkage assembly includes a first rod and a second rod, the second rod is located on the proximal side of the first rod, the first rod includes the first pivot portion and a third pivotal portion, the second rod includes the second pivotal portion and a fourth pivotal portion, the third pivotal portion is pivotally connected to the fourth pivotal portion;
  • the switching driving member moves toward the second
  • the switching driving member drives the third pivotal part and the fourth pivotal part to move in a fourth direction, and the third direction is opposite to the fourth direction.
  • a connecting rod is further included, the third direction is a direction toward the connecting rod, and the fourth direction is a direction away from the connecting rod;
  • the switching driving member includes a first driving part and a first sheath part, the first sheathing part is sheathed on the outside of the connecting rod or the outside of the closing rod assembly, and the first driving part is located on the first An outer sleeve portion faces one side of the connecting rod assembly, and when the first outer sleeve portion moves toward the first direction, it drives the closing rod assembly to move toward the first direction, so that the connecting rod assembly is moved by the The first state enters the second state.
  • the first direction is toward the proximal side of the stapler
  • the second direction is toward the distal side of the stapler
  • the first direction and the second The directions are all along the axial direction of the stapler.
  • the link assembly when the link assembly is in the second state, and the switching driving member moves toward the second direction, the link assembly is driven to enter the first state, and the second The two pivot joints drive the closing rod assembly to move in the second direction.
  • the first rod or the second rod is provided with a second driving part, and when the linkage assembly is in the second state, the second driving part is relatively the rod or the second rod protrudes towards the direction of the connecting rod;
  • the switching driving member presses the second driving part in a direction away from the connecting rod, so that the The connecting rod assembly enters the first state.
  • the switching driving member moves toward the first direction, so that after the linkage assembly enters the second state from the first state, the first driving part is located in the second state. Proximal side of the drive unit.
  • the distal side of the first driving part is provided with a first guiding surface
  • the proximal side of the second driving part is provided with a second guiding surface
  • the second driving portion is disposed on the third pivot portion or the fourth pivot portion.
  • the switching driving member includes two first driving parts, and the two first driving parts are arranged symmetrically with respect to the axial direction of the stapler; the connecting rod assembly is provided with two The second driving part, the switching driving part is configured to be operable to drive the connecting rod assembly from the second state to the first state, and each of the first driving parts respectively drives one of the first driving parts. 2. Drive unit.
  • the first driving part is a driving arm extending from the first outer casing part to the second direction.
  • a switching biasing member is provided between the switching driving member and the stapler body, and the switching biasing member gives the switching driving member a first bias toward the first direction force.
  • the switch biasing member is a switch return spring
  • one side of the first jacket part is provided with a spring fitting groove
  • one end of the switch return spring is arranged in the spring fitting groove.
  • the closing pull rod assembly includes a second outer casing part and a third driving part, the second outer casing part is sleeved on the outside of the connecting rod, and the first outer casing part of the switching driving part is connected to the third driving part.
  • the second outer casing part is matched, the first end of the third driving part is pivotally connected to the second pivotal part, and the second end of the third driving part is fixedly connected to the second outer casing part.
  • a closing biasing member is disposed between the closing rod assembly and the stapler body, and the closing biasing member gives the closing rod assembly a second bias toward the second direction force.
  • the closure rod assembly includes a first closure member and a second closure member, the first closure member is sleeved on the outside of the connecting rod, and the second closure member includes the second outer sleeve part and the driving part, the first closure part is axially fixed to the second outer casing part, and the part of the first closure part protruding from the distal end side of the second outer casing part passes through the switch The interior of the first housing portion of the driver.
  • the closing biasing member is a closing return spring
  • a spring matching stepped surface is provided inside the first closing member, and one end of the closing returning spring is opposed to the spring matching stepped surface.
  • the switching driving member includes an operating portion protruding from the outer surface of the housing of the stapler body, and the housing is provided with a receiving groove for accommodating the operating portion.
  • it further includes a closure pull piece, the proximal side of the closure pull piece is connected to the closure pull rod assembly through a connecting pin.
  • the switching drive member is pivotally connected to the closing rod assembly, the link assembly is in the second state, and the switching driving member is in a fifth direction relative to the closing rod assembly
  • the connecting rod assembly is driven to enter the first state, and the second pivot portion drives the closing pull rod assembly and the switching driving member to move in the second direction.
  • the switching driving member includes a first driving part and a rotating fitting part, the rotating fitting part is pivotally connected to the closing pull rod assembly through a rotating shaft, and the link assembly includes a second driving part ;
  • the first driving part drives the second driving part in a direction away from the connecting rod, so that the The linkage assembly enters the first state.
  • the second driving portion is disposed on the third pivot portion or the fourth pivot portion.
  • the first driving part when the connecting rod assembly is in the second state, the first driving part is located on the side of the second driving part facing the connecting rod, and the first driving part and the There is a certain height gap between the opposite surfaces of the second driving part.
  • the first driving part is a driving arm extending from the rotating fitting part to the second direction, and the rotating fitting part is connected to the first outer casing part and the first driving arm. There is a bending part between the parts, and a fixed angle is set between the first driving part and the first jacket part.
  • the rotating fitting part is pivotally connected to the third driving part of the closing rod assembly through the rotating shaft.
  • a switching bias is provided between the switching driving member and the closing rod assembly, and when the switching driving member rotates in the fifth direction relative to the closing rod assembly, the switching bias The member is deformed to give the switching driving member a second biasing force to rotate in a sixth direction, the sixth direction being opposite to the fifth direction.
  • the switching biasing member is a switching return spring
  • a first spring installation part is provided on the closing rod assembly
  • a second spring installation part is provided on the switching driving part
  • the switching return spring The two ends of the two ends are respectively fixed on the first spring mounting part and the second spring mounting part, and when no external force is applied, the proximal end surface of the switching driving member is at least partially abutted against the closing rod assembly.
  • the switching driving member is fixed in the axial direction of the stapler relative to the closing rod assembly, and the switching driving member can move in a seventh direction relative to the closing rod assembly, so A fixed angle is set between the seventh direction and the first direction or the second direction;
  • the included angle is a right angle
  • the switching driving member can move in an up and down direction relative to the closing rod assembly.
  • the switching driving member includes a first driving part and a connecting fitting part, and the connecting fitting part is fixed in the axial direction relative to the closing rod assembly, and can be relative to the closing rod assembly for movement in the seventh direction, the linkage assembly includes a second drive portion;
  • the seventh direction is a direction toward the connecting rod or a direction away from the connecting rod.
  • the switching driving member further includes a first connecting part
  • the closing rod assembly includes a second outer casing part and a third driving part
  • the first connecting part is movably connected to the second outer casing part
  • the second outer sleeve part is sheathed on the outside of the connecting rod
  • the third driving part is pivotally connected to the second pivot part of the connecting rod assembly.
  • the first connection part is a first outer casing part, and the first connection part is sleeved on the second outer casing part.
  • the connecting fitting part is provided with a sliding slot extending along the seventh direction
  • the closing rod assembly is provided with a boss, or, the closing rod assembly is provided with a sliding groove extending along the seventh direction.
  • the chute, the connecting part is provided with a boss;
  • the protrusion at least partially enters the interior of the chute, and can move along the extending direction of the chute.
  • a switching biasing member is provided between the switching driving member and the closing rod assembly, and the switching biasing member gives a second biasing force to the switching driving member, and the second The direction of the biasing force is opposite to the seventh direction.
  • the protruding post at least partly enters the interior of the chute, and can move along the extending direction of the chute, and the two ends of the switching biasing member are respectively arranged on the protruding post and the spring fitting part.
  • the second driving portion is disposed on the third pivotal portion and/or the fourth pivotal portion.
  • the switching driving member further includes a first sheath part
  • the closing pull rod assembly includes a second sheath part
  • the second sheath part is sheathed on the outside of the connecting rod, and the first sheath The part is sheathed on the outside of the second sheath part; the first driving part is located at the distal end side of the connection matching part.
  • the first driving part when the connecting rod assembly is in the second state, the first driving part is located on the side of the second driving part facing the connecting rod, and the first driving part faces the One side surface of the second driving part is a plane parallel to the axial direction.
  • the second pivotal part is rotatably connected to the closing rod assembly through a third pin shaft
  • the second driving part is arranged on the second pivotal part
  • the second The driving part and the fourth pivot part are respectively located on two sides of the third pin.
  • the switching driving part includes two side walls, and the two side walls are respectively located on both sides of the third driving part, and the first driving part is connected to the switching driving part. Fourth pin between the two side walls.
  • the second driving part when the connecting rod assembly is in the first state, the second driving part is located on the side of the first driving part facing the connecting rod, and the second driving part is connected to the connecting rod. There is a height gap between the opposite surfaces of the first driving part;
  • a fitting groove is provided on a side of the second driving part away from the connecting rod, and when the connecting rod assembly is in the second state, the first driving part at least partially enters into the fitting groove.
  • the invention provides a closure switching mechanism for a medical stapler.
  • the connecting rod assembly can be switched between different states without passing through the handle of the stapler, and the closing rod assembly can be controlled to move axially along the stapler.
  • the closing rod assembly moves to the first direction
  • the nail head can be closed
  • the closing rod assembly moves to the second direction
  • the nail head can be opened, so that manual closing and manual opening of the nail head can be realized, and the structure is simple , easy to operate.
  • Fig. 1 is a schematic structural view of a stapler according to a first embodiment of the present invention
  • Fig. 2 is the structural representation of the nail head of the first embodiment of the present invention
  • FIG. 3 is a schematic structural view of the stapler body in the first embodiment of the present invention after one side of the housing is removed, wherein the connecting rod assembly is in the first state, and the switching drive member is in the first position range;
  • Fig. 4 is a structural schematic diagram of the cooperation between the connecting rod assembly and the closing rod assembly according to the first embodiment of the present invention
  • Fig. 5 is a schematic diagram of the structure of the cooperation of the connecting rod assembly, the closing pull rod assembly and the switching drive member according to the first embodiment of the present invention
  • Fig. 6 is a schematic structural view of the closed switching mechanism according to the first embodiment of the present invention, wherein the connecting rod assembly is in the second state, and the switching driving member is in the second position range;
  • Fig. 7 is a schematic diagram of cooperation between the connecting rod assembly and the second closing member according to the first embodiment of the present invention.
  • Fig. 8 is a schematic structural view of the closing rod assembly according to the first embodiment of the present invention.
  • Fig. 9 is an exploded view of the closing rod assembly of the first embodiment of the present invention.
  • Fig. 10 is a schematic structural view of the first closing member of the first embodiment of the present invention.
  • Fig. 11 is a schematic diagram of the cooperation between the closing rod assembly and the switching drive member according to the first embodiment of the present invention.
  • Fig. 12 is a schematic structural diagram of a switching drive member according to the first embodiment of the present invention.
  • Fig. 13 is a schematic structural view of the closed switching mechanism according to the first embodiment of the present invention, wherein the connecting rod assembly is in the second state, and the switching driving member moves to the first position range;
  • Fig. 15 is a schematic structural view of the stapler body with part of the casing removed according to the second embodiment of the present invention.
  • Fig. 16 is a schematic structural view of the closing switching mechanism of the second embodiment of the present invention.
  • Fig. 17 and Fig. 18 are schematic diagrams of the cooperation between the closing rod assembly and the switching driving member according to the second embodiment of the present invention.
  • Fig. 19 is a schematic structural view of the closing switching mechanism when the connecting rod assembly is in the first state according to the second embodiment of the present invention.
  • Fig. 21 is a schematic structural view of the closing switching mechanism when the connecting rod assembly is in the second state according to the second embodiment of the present invention.
  • Fig. 22 is a schematic diagram of the cooperation between the switching drive member and the connecting rod assembly according to the second embodiment of the present invention.
  • Fig. 25 is a schematic structural view of the stapler body after one side of the shell is removed according to the first embodiment of the present invention
  • Fig. 26 is a schematic structural view of the closing switching mechanism of the first embodiment of the present invention.
  • Fig. 27 is a perspective view of the closing switching mechanism of the first embodiment of the present invention.
  • Fig. 29 is a schematic structural view of the closing switching mechanism when the connecting rod assembly is in the first state according to the first embodiment of the present invention.
  • Fig. 30 is an exploded view of the closing switching mechanism of the first embodiment of the present invention.
  • Fig. 31 is a schematic structural view of the connecting rod assembly in the second state according to the first embodiment of the present invention.
  • Fig. 32 is a schematic structural view of the closing switching mechanism when the connecting rod assembly is in the second state according to the first embodiment of the present invention
  • Fig. 34 is a schematic structural view of the closing switching mechanism when the connecting rod assembly is in the first state according to the second embodiment of the present invention.
  • Fig. 35 is a schematic structural view of the closing rod assembly when the connecting rod assembly is in the second state according to the second embodiment of the present invention.
  • Fig. 36 is a perspective view of the closing rod assembly of the second embodiment of the present invention.
  • Fig. 37 is an exploded view of the closing rod assembly of the second embodiment of the present invention.
  • Fig. 38 is a schematic structural view of the closing switching mechanism when the nail head is opened according to the second embodiment of the present invention.
  • Example embodiments will now be described more fully with reference to the accompanying drawings.
  • Example embodiments may, however, 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 example embodiments to those skilled in the art.
  • the same reference numerals denote the same or similar structures in the drawings, and thus their repeated descriptions will be omitted.
  • the invention provides a closing switching mechanism for a medical stapler and a medical stapler comprising the closing switching mechanism.
  • the stapler also includes a nail head and a stapler body, the nail head is arranged on the distal side of the stapler body, and the stapler body is provided with a closing tab for closing the nail head , the distal side of the closure tab is connected to the nail head.
  • the closing switching mechanism includes: a link assembly including a first pivot portion and a second pivot portion, the first pivot portion is pivotally connected to the stapler body, and the link assembly includes a first state and a second state; a switching drive member movable in a first direction and a second direction, the first direction being opposite to the second direction; a closing tie rod assembly pivotally connected on the second pivot joint.
  • the closing pull rod assembly When it is necessary to close the nail head of the stapler, when the switching driving member is operated to move toward the first direction, the closing pull rod assembly is driven to move toward the first direction, and the closing pull tab can be pulled toward the second direction. moving in one direction, so as to close the nail head and make the connecting rod assembly enter the second state from the first state. After the staple heads are closed, the firing of the stapler can proceed. After the firing of the stapler is completed, when the nail head needs to be opened, the switching driving member is manually operated, and the switching driving member is configured to be operable to drive the linkage assembly from the second state to the first state. In the state, the second pivotal part drives the closing rod assembly to move in the second direction, thereby opening the nail head. Therefore, the closing switching mechanism of the present invention can realize manual closing and manual opening of the nail head, and has a simple structure and convenient operation.
  • the switching driving member drives the The connecting rod assembly enters the first state, and the second pivot portion drives the closing pull rod assembly to move in the second direction, so as to open the nail head.
  • the first embodiment of the present invention provides a closing switching mechanism for a medical stapler and a medical stapler including the closing switching mechanism.
  • the stapler further includes a nail head 9 and a stapler body 1 , and the nail head 9 is disposed on the distal side of the stapler body 1 .
  • the stapler body 1 includes a housing 13 , and one side of the housing 13 is provided with a fixed handle 11 .
  • the inside of the stapler body 1 is provided with a closing tab 12 for closing the nail head 9 , and the distal side of the closing tab 12 is connected to the nail head 9 .
  • the distal side and the proximal side are relative to the operator, the end closer to the operator is the proximal side, and the end farther away from the operator, that is, the end closer to the surgical site is the far side.
  • the direction along the axis of the stapler is the axial direction, that is, the direction from the distal side to the proximal side of the stapler, or the direction from the proximal side to the distal side of the stapler.
  • the S1 direction in FIG. 1 is the direction from the distal side to the proximal side of the stapler.
  • the S2 direction in FIG. 3 is defined as the longitudinal direction, that is, the height direction.
  • the nail head 9 includes an anvil 91 and a nail cartridge assembly 92 oppositely arranged, and the proximal end side of the nail anvil 91 and the proximal end side of the nail cartridge assembly 92 are rotatable. ground connection, so that the anvil 91 has an open state and a closed state relative to the staple cartridge assembly 92.
  • the proximal side of the nail anvil 91 is provided with a first matching groove 911
  • the proximal side of the nail cartridge assembly 92 is provided with a second matching groove 921 extending axially
  • a closing pin 93 is simultaneously installed in the The first fitting groove 911 , the second fitting groove 921 and the distal side of the closing pull tab 12 .
  • the closing pin 93 also moves toward the proximal side, driving the nail anvil 91 to move toward the nail cartridge assembly 92 to close the nail head 9
  • the closing pin 93 also moves toward the distal side, driving the nail anvil 91 to move away from the nail cartridge assembly 92 to open the nail head Part 9.
  • the closing switching mechanism includes a link assembly 4 , a switching driving member 7 and a closing pull rod assembly 5 .
  • the link assembly 4 includes a first rod 41 and a second rod 42, the second rod 42 is located on the proximal side of the first rod 41, and the first rod 41 includes a first pivot portion 412 and a second rod 41.
  • the first pivotal part 412 is pivotally connected to the housing 13 of the stapler body 1 through the first pin shaft 43, so that the first pivotal part 412 is connected to the housing 13 of the stapler body 1 Relatively fixed in the axial direction.
  • the third pivotal part 413 is pivotally connected to the fourth pivotal part 423 through the second pin shaft 44
  • the second pivotal part 422 is pivotally connected to the closing rod assembly through the third pin shaft 45 5, so that the second pivot portion 422 is relatively fixed in the axial direction with the closing rod assembly 5, and the closing rod assembly 5 is fixedly connected with the proximal end side of the closing pull piece 12, so that the closing rod
  • the axial movement of the component 5 can drive the axial movement of the closing tab 12 .
  • the link assembly 4 includes a first state and a second state, both of which are relatively balanced states.
  • the switching drive 7 comprises a first position area and a second position area. In the initial state, the link assembly 4 is in the first state, and the link assembly 4 is in a relatively compact state, that is, the shaft between the first pivot portion 412 and the second pivot portion 422 If the direction distance is small, the switching drive member 7 is in the first position area.
  • the closing rod assembly 5 When it is necessary to drive the nail head to close, by driving the switching driving member 7 to move toward the first direction, the closing rod assembly 5 is driven to move toward the proximal side of the stapler, and the second pivot part 422 moves toward the proximal side of the stapler, the third pivot part 413 and the fourth pivot part 423 move toward the third direction, the link assembly 4 enters the second state, the The connecting rod assembly 4 enters a relatively stretched state, the axial distance between the first pivotal part 412 and the second pivotal part 422 increases, and at the same time, the closing pull rod assembly 5 drives the closing pull piece 12 moves proximally to close the nail head.
  • the switching driving member 7 moves to the second position area, the nail head is closed.
  • the link assembly 4 is in the relatively stable second state, and the switching drive member 7 is located in the second position area, at this time, the stability of the nail head closure can be maintained , and the firing of the stapler can be carried out, and the accidental movement of the closure tab 12 will not occur when the stapler is firing, which will affect the stability of the closure of the nail head.
  • the switching driving member 7 is operated to move from the second position area toward the second direction, and the switching driving member 7 presses the connecting rod in the fourth direction
  • the assembly 4 can drive the link assembly 4 to enter the first state from the second state, and the second pivot portion 422 of the link assembly 4 drives the closing rod assembly 5 to move toward the distal side, and the closing rod assembly 5 can
  • the closing pull piece 12 is driven to move in the direction of the distal end to open the nail head, so that the nail head can be opened manually, the structure is simple, and the operation is convenient.
  • the second position area of the switching driver 7 is located on the proximal side of the first position area, therefore, the first direction is toward the proximal side of the stapler (S1 in FIG. 3 direction), the second direction is a direction toward the distal side of the stapler (a direction opposite to the S1 direction). And the first direction and the second direction are both along the axial direction of the stapler.
  • the first position area refers to the position area where the switching drive member 7 is located in the initial state as shown in Figures 3-5
  • the second position area refers to the nail head as shown in Figure 6 After the closing is completed, the position area where the driving member 7 is located is switched.
  • the closing switching mechanism also includes a connecting rod 18 .
  • the closing pull piece 12 passes through the inside of the connecting rod 18 .
  • the connecting rod 18 is sleeved with the actuating rod 2 , the switching driving member 7 and the closing pull rod assembly 5 .
  • the stapler also includes a firing handle 3 pivotally connected to the housing 13 of the stapler body 1 , and the firing handle 3 is connected to a handle return spring 15 .
  • the initial position of the firing handle 3 is located away from the fixed handle 11. When the firing handle 3 is held, the handle return spring 15 is elastically deformed.
  • the firing handle 3 When the firing handle 3 is released, the elastic deformation of the handle return spring 15 Under the action of restoring force, the firing handle 3 can return to the initial position.
  • One end of the firing handle 3 is provided with a claw 31 , and the claw 31 cooperates with the rack 21 on one side of the actuating rod 2 .
  • the claw 31 of the firing handle 3 can drive the rack 21 to move toward the distal side, thereby firing the stapler.
  • the third direction is the direction from bottom to top in the viewing angle of FIG. direction.
  • the fourth direction is a direction from top to bottom in the perspective of FIG.
  • the switching drive member 7 includes an operating portion 73 , a first driving portion 72 and a first sheathing portion 71 , the operating portion 73 is connected to the first sheathing portion 71 and protrudes from the first sheathing portion 71 .
  • the outer surface of the casing 13 of the above-mentioned stapler body 1 is convenient for the operator to use.
  • the housing 13 is correspondingly provided with a receiving groove for accommodating the operating portion 73 , the operating portion 73 is partly located in the receiving groove, and partly extends out of the housing 13 .
  • the first sheath portion 71 is sleeved on the outside of the connecting rod 18 or the outside of the closing rod assembly 5 , and can move axially relative to the connecting rod 18 .
  • the first driving part 72 is located on a side of the first outer casing part 71 facing the connecting rod assembly 4 .
  • the third pivot portion 413 of the first rod 41 is provided with a second driving portion 46 , and the second driving portion 46 protrudes from a side surface of the first rod 41 facing the connecting rod 18 .
  • the connecting rod assembly 4 is in the second state (the state shown in FIG. 6 )
  • the second driving part 46 faces toward the connecting rod relative to the first rod 41 or the second rod 42
  • the direction of 18 protrudes.
  • the second driving part 46 is located at a position relatively away from the connecting rod 18 along with the third pivot part 413, and will not contact the first driving part 72, and the first driving part 72
  • the portion 72 will not apply force to the second driving portion 46 .
  • the closing rod assembly 5 includes a first closing member 51 and a second closing member 52, the first closing member 51 is sleeved on the outside of the connecting rod 18, and the second closing member
  • the member 52 includes a second outer casing part 521 and a third driving part 522, the proximal side of the first closure part 51 at least partly enters the second outer casing part 521, the first closure part 51 and the second closure part 51
  • the sheath part 521 is axially fixed, and the part of the first closure part 51 protruding from the distal side of the second sheath part 521 passes through the inside of the first sheath part 71 of the switching drive part 7 .
  • the distal side of the first closing member 51 is provided with a through hole 511, and the connecting pin 53 (shown in FIG. 8 ) passing through the through hole 511 of the first closing member 51 can close the first closing member 51.
  • the distal side of the member 51 is fixedly connected to the proximal side of the closure pull piece 12 .
  • a first end of the third driving part 522 is pivotally connected to the second pivot part 422 of the second lever 42 , and a second end of the third driving part 522 is connected to the second outer sleeve part 521 .
  • One or two guiding parts 5221 are provided on the side of the third driving part 522 .
  • the inner surface of the housing 13 of the stapler body 1 is provided with one or two guide grooves 131, the guide grooves 131 extend in the axial direction, the guide portion 5221 at least partially enters the guide grooves 131, and can Move along the extending direction of the guide groove 131 .
  • the cooperation of the guide portion 5221 and the guide groove 131 restricts the movement of the second closing member 52 only in the axial direction.
  • a guide part may also be provided on the inner surface of the housing 13 of the stapler body 1, and a guide groove may be provided on the side of the third driving part 522, which also belongs to the scope of protection of the present invention. Inside.
  • the first sheath portion 71 of the switch driving member 7 is located at the distal side of the second sheath portion 521 of the second closing member 52 .
  • the distal end surface of the second sheath portion 521 is a switching mating surface 5211 , and the switching mating surface 5211 abuts against the proximal end surface of the first sheathing portion 71 of the switching driving member 7 .
  • a switching biasing member is provided between the switching driving member 7 and the stapler body 1 , and the switching biasing member gives the switching driving member 7 a first biasing force toward the proximal side.
  • the switching biasing member is a switching return spring 62 , and can optionally be a compression spring disposed on the distal side of the switching driving member 7 .
  • the switching biasing member may also be a spring, a tension spring disposed on the proximal side of the switching driving member 7 or other types of elastic members.
  • a stop portion 14 is provided inside the housing 13 of the stapler body 1 .
  • a closing biasing member is disposed between the closing rod assembly 5 and the stopper portion 14 , and the closing biasing member gives the closing rod assembly 5 a second biasing force toward the distal end side.
  • the closing biasing member is a closing return spring 61 , and can optionally be a compression spring disposed on the proximal side of the closing pull rod assembly 5 .
  • the closing biasing member may also be an elastic piece, a tension spring provided on the distal side of the closing rod assembly 5 or other types of elastic members.
  • the closing return spring 61 basically does not deform or only slightly deforms. Under the action of the second biasing force of the closing return spring 61 , the closing pull rod assembly 5 abuts against the switching driving member 7 and keeps the switching driving member 7 in the first position area. However, the first biasing force of the switching return spring 62 is not enough to overcome the second biasing force of the closing return spring 61 , therefore, the switching return spring 62 is compressed and deformed.
  • the closing return spring 61 Through the effect of the closing return spring 61, it is possible to further prevent the switching drive member 7 from moving in the direction of the proximal end under the action of the switching return spring 62, and further keep the closing switching mechanism when it is not subjected to external force. state stability. As shown in FIG. 5 , in the initial state, the axial length of the closing return spring 61 is L11 , and the axial length of the switching return spring 62 is L21 .
  • the operating part 73 of the switching driving member 7 is operated, so that the switching driving member 7 moves from the first position area to the first direction, and the first outer sleeve part 71 acts on the second outer sleeve portion 521 to make the closing rod assembly 5 move toward the proximal side of the stapler as a whole.
  • the closing rod assembly 5 drives the second pivoting part 422 to move in the first direction through the third driving part 522 .
  • the third pivot portion 413 and the fourth pivot portion 423 move toward the third direction, that is, move upward and approach the connecting rod 18 , and the first rod 41 rotates counterclockwise around the first pivot 43 Rotate, the second lever 42 rotates clockwise around the third pivot 45, and the link assembly 4 enters the second state.
  • the state of the closed switching mechanism is shown in FIG. 6 . Comparing FIG. 6 and FIG. 5 , it can be seen that the switching driving member moves proximally to the second position area, and the axial length of the switching return spring 62 is extended to L22, and L22 is greater than L21.
  • the third driving part 522 of the second closing member 52 moves toward the proximal side, and the first closing member 51 drives the closing pull tab 12 to move toward the proximal side to close the nail head.
  • the closing return spring 61 is compressed and deformed, and the axial length of the closing return spring 61 is shortened to L12, and L12 is smaller than L11.
  • the first driving part 72 is located at the proximal side of the second driving part 46 and does not act on the second driving part 46 .
  • the connecting rod assembly 4 is in a relatively stable second state, and under the action of the connecting rod assembly 4 , the closing return spring 61 and the switching return spring 62 , the closing pull rod assembly 5 And the switching driving member 7 is also in a relatively stable state, so as to maintain the stability of the nail head after it is closed. Hold the firing handle 3 at this moment, and the stapler can be fired by driving the rack 21 .
  • the first driving part 72 is a driving arm extending from the first sheath part 71 toward the distal side of the stapler.
  • the third pivot portion 413 of the first rod 41 is provided with two second driving parts 46, and the switching driving part 7 includes two first driving parts 72, and the two first driving parts 72 are opposite to the The axial symmetry of the stapler is set.
  • the first closing member 51 and the second closing member 52 are two separate parts, and the proximal side of the first closing member 51 enters the second closing member at least partially.
  • the second sheath portion 521 of the closure member 52 cooperates with the stepped surface inside the second sheath portion 521 to form an axially fixed and relatively rotatable fit.
  • the guiding portion 5221 is a protruding bar disposed on the side of the third driving portion 522 .
  • a matching hole 5222 is provided at a distal side of the third driving part 522 for installing the third pin shaft 45 .
  • the inside of the first closing member 51 is provided with a spring matching step surface 512 , and one end of the closing return spring 61 is opposed to the spring matching step surface 512 .
  • a spring fitting groove 711 is disposed on the distal surface of the first outer casing portion 71 , and one end of the switching return spring 62 is disposed in the spring fitting groove 711 .
  • first closing member 51 and the second closing member 52 may also be integrally provided.
  • the second driving part 46 can also be in other shapes, and the number of the second driving part 46 and the first driving part 72 is not limited to two, for example, only one first driving part 72 is provided. Two driving parts 46 and a first driving part 72 .
  • the installation position and manner of the closing return spring 61 and the switching return spring 62 may also be different from this embodiment.
  • the second driving portion 46 may also be disposed on the fourth pivot portion 423 , or disposed on other positions of the first rod 41 or the second rod 42 .
  • the guide portion 5221 may also be set as a boss or other structures.
  • the stapler can be fired by holding the firing handle 3 .
  • the connecting rod assembly 4 and the closing pull rod assembly 5 and the state of the switching driving member 7 will not change, that is, the connecting rod assembly 4 remains in the second state, the switching driving member 7 remains in the second position area, and the closing pull tab 12 will not accidentally move axially Play to keep the nail head firmly closed.
  • the operator operates the operating part 73 protruding from the outside of the housing 13 to drive it to move in the direction of the distal end, so that the switching driving member 7 moves from the second position area to the stapler.
  • the distal side of the switch moves to the first position area, compressing the switching return spring 62, so that the axial length of the switching return spring 62 is shortened to the initial length L21, and enters the state of FIG. 13 .
  • the first driving part 72 moves to the top of the second driving part 46 in the direction of the distal end, and gives the second driving part 46 a motion along the fourth direction (the downward direction in FIG. 13 , that is, the direction away from the connecting rod 18).
  • the second closing member 52 drives the closing pull piece 12 to move toward the distal side through the first closing member 51 , so that the nail head can be opened. Therefore, after the firing of the stapler is completed, by operating the operating portion 73 of the switching drive member 7 to move in the direction of the distal end, the link assembly 4 can be driven from the second state to the first state, and the closing rod assembly 5 can be driven to the distal end. Move sideways to open the nail head, so that manual opening of the nail head can be realized, the structure is simple, and the operation is convenient.
  • the structure of the switching driving member is different from that of the first embodiment.
  • the switching driving member can be rotatably arranged relative to the closing rod assembly, and when the connecting rod assembly is in the second state and the switching driving member is operated to rotate in the fifth direction, it can drive the The connecting rod assembly enters the first state from the second state, and drives the closing pull rod assembly to move toward the distal end side to open the nail head.
  • the connecting rod assembly can be driven to switch between different states by operating the switching drive member, and the closing pull rod assembly can be controlled to move axially along the stapler, thereby controlling the closing and opening of the nail head.
  • the structure is simple and easy to use.
  • the second embodiment of the present invention provides a closing switching mechanism for a medical stapler and a medical stapler including the closing switching mechanism.
  • the main components of the stapler and the switching of the open and closed states of the nail head can be referred to the description in the first embodiment with reference to FIG. 1 and FIG. 2 , and will not be repeated here.
  • the closing switching mechanism includes a link assembly 4 , a switching driving member 7 and a closing pull rod assembly 50 .
  • the link assembly 4 includes a first rod 41 and a second rod 42, the second rod 42 is located on the proximal side of the first rod 41, and the first rod 41 includes a first pivot portion 412 and a second rod 41.
  • the connection relationship between the connecting rod assembly 4 and the closing rod assembly 50 is the same as that of the first embodiment, and will not be repeated here.
  • the closing rod assembly 50 is fixedly connected to the proximal side of the closing pull piece 12 , so that the axial movement of the closing pull rod assembly 50 can drive the axial movement of the closing pull piece 12 .
  • the switch driving member 7 is pivotally connected to the closing rod assembly 50, and the pivot connection position between the switching driving member 7 and the closing rod assembly 50 is in the axial direction of the stapler relative to the closing rod assembly 50. fixed.
  • being fixed in the axial direction of the stapler means that the pivotal connection position of the switching drive member 7 and the closing rod assembly 50 will not be displaced in the axial direction relative to the closing rod assembly 50 .
  • the switching driving member 7 can move in a first direction and a second direction, and the first direction and the second direction are two opposite directions.
  • the link assembly 4 includes a first state and a second state, both of which are relatively balanced states.
  • the switching drive 7 comprises a first position area and a second position area. In the initial state, the link assembly 4 is in the first state, and the link assembly 4 is in a relatively compact state, that is, the shaft between the first pivot portion 412 and the second pivot portion 422 If the direction distance is small, the switching drive member 7 is in the first position area.
  • the closing rod assembly 50 is driven to move toward the first direction, and the second pivot joint 422 is driven toward the first direction.
  • the link assembly 4 moves towards the third direction, and the link assembly 4 enters the second state, at this time, the link assembly 4 enters a relatively stretched state , the axial distance between the first pivotal portion 412 and the second pivotal portion 422 increases, and at the same time, the closing pull rod assembly 50 drives the closing pull piece 12 to move in the first direction to close nail head.
  • the switching driving member 7 moves to the second position area, the nail head is closed.
  • the connecting rod assembly 4 is in the relatively stable second state, and the switching drive member 7 is located in the second position area.
  • the holding of the connecting rod assembly 4 Under the action, the stability of the closure of the nail head can be maintained, and the firing of the stapler can be performed.
  • the closure tab 12 will not accidentally move and affect the stability of the nail head closure.
  • the switching driving member 7 is operated to rotate in the fifth direction relative to the closing rod assembly 50, and the switching driving member 7 drives the connecting rod assembly 50 to the fourth direction.
  • the rod assembly 4 can drive the link assembly 4 to enter the first state from the second state, and the second pivot portion 422 of the link assembly 4 drives the closing rod assembly 50 to move in the second direction, and the closing rod assembly 50 can Drive the switching drive member 7 to move in the second direction and return to the first position area, and at the same time, the closing pull rod assembly 50 drives the closing pull piece 12 to move in the direction of the distal end to open the nail head, so that The manual opening of the nail head has simple structure and convenient operation.
  • the second location area is located proximally of the first location area.
  • Both the first direction and the second direction are along the axial direction of the stapler. Specifically, the first direction is toward the proximal side of the stapler (direction S1 in FIG. 15 ), and the second direction is toward the distal side of the stapler (direction opposite to S1).
  • the switching driving member 7 moves from the first position area to the proximal side, it can drive the nail head to close, and when the switching driving member 7 moves from the second position area to the distal side, it can drive the nail head to open. department.
  • the first position area refers to the position area where the switching drive member 7 is located in the initial state as shown in Figure 19, and the second position area refers to the completion of the nail head closure as shown in Figure 21 Afterwards, the position area where the driving member 7 is located is switched.
  • the closing switching mechanism further includes a connecting rod 18 .
  • the closing pull piece 12 passes through the inside of the connecting rod 18 .
  • the third direction is the direction from bottom to top in the viewing angle of FIG. direction.
  • the fourth direction is a direction from top to bottom in the perspective of FIG. 15 , that is, for the third pivotal portion 413 and the fourth pivotal portion 423 , the direction away from the connecting rod 18 .
  • FIG. 19 it is a schematic structural diagram of the closing switching mechanism in the initial state of this embodiment. In the state of FIG.
  • the third pivotal portion 413 and the fourth pivotal portion 423 are in a position relatively far away from the connecting rod 18, and the connecting rod assembly 4 is in a relatively stable first state. , the axial distance between the first pivotal portion 412 and the second pivotal portion 422 is small.
  • the switching drive 7 is in the first position range.
  • the switching driving member 7 includes an operating part 73 , a first driving part 72 , a first outer casing part 71 and a rotating matching part 75 , and the operating part 73 is connected to the first outer casing part 71 .
  • the operation part 73 is connected to the first outer casing part 71 .
  • the housing 13 is correspondingly provided with an accommodating groove for accommodating the operating portion 73 , the operating portion 13 partially enters the interior of the accommodating groove, is movable relative to the accommodating groove, and protrudes beyond the end of the stapler body 1 .
  • the outer surface of the housing 13 is convenient for the operator to use.
  • the first sleeve portion 71 is sheathed on the outside of the closing rod assembly 50 and can move axially relative to the connecting rod 18 .
  • the first driving part 72 is located on the side of the first outer casing part 71 facing the connecting rod assembly 4 , and the rotation matching part is arranged between the first driving part 72 and the first outer casing part 71 75 , the rotating fitting part 75 is pivotally connected to the closing rod assembly 5 through a rotating shaft 5023 , and the rotating fitting part 75 is provided with a second fitting hole 751 passing through the rotating shaft 5023 .
  • the first driving part 72 is a driving arm extending from the rotating matching part 75 to the distal end of the stapler, and the rotating matching part 75 is connected to the first driving part 72 and the second driving part 72.
  • a bent portion between the jacket portions 71 A fixed angle is set between the first driving part 72 and the first outer sleeve part 71, that is, the rotating matching part 75 is a bent part that will not deform, and preferably has a certain rigidity, so that the first The included angle (for example, a right angle, or an angle smaller than a right angle or greater than a right angle) between a driving part 72 and the first sheath part 71 remains unchanged.
  • a second driving portion 411 is disposed at the third pivot portion 413 of the first rod 41 , and the second driving portion 411 includes a mating surface facing the connecting rod 18 . In the initial state, the second driving part 411 is located at a position relatively far away from the connecting rod 18 along with the third pivot part 413, and will not contact the first driving part 72. The first driving part 72 The part 72 will not apply force to the second driving part 411.
  • the closing rod assembly 50 includes a second outer casing part 501 and a third driving part 502 .
  • the second sheath portion 501 is sheathed on the outside of the connecting rod 18, the second sheath portion 501 includes a distal portion and a proximal portion, the outer diameter of the distal portion is smaller than the outer diameter of the proximal portion, so A switching mating surface 5013 is provided between the distal portion and the proximal portion of the second sheath portion 501 .
  • the distal end portion of the second sheath portion 501 is at least partially passed through the inside of the first sheath portion 71 of the switching fitting 7 , and the switching mating surface 5013 of the second sheathing portion 501 is in contact with the first sheathing portion. 71 of the proximal surface to match.
  • the distal side of the second sheath part 501 is provided with a through hole 5011, and the connecting pin 19 passed through the through hole 5011 of the second sheath part 501 can connect the distal side of the second sheath part 501 with the The proximal side of the closure pull tab 12 is fixedly connected.
  • a first end of the third driving part 502 is pivotally connected to the second pivot part 422 of the second rod 42 , and a second end of the third driving part 502 is connected to the second outer sleeve part 501 .
  • the rotation shaft 5023 passes through the third driving part 052 , and is pivotally connected with the rotation matching part 75 of the switching driving part 7 through the rotation shaft 5032 .
  • One or two guiding parts 5021 are provided on the side of the third driving part 502 .
  • the inner surface of the shell 13 of the stapler body 1 is provided with one or two guide grooves (refer to the guide groove 131 in Fig.
  • a stopper portion 14 is provided inside the casing 13 of the stapler body 1 .
  • a closing biasing member is disposed between the closing rod assembly 50 and the stopper portion 14 , and the closing biasing member gives the closing rod assembly 50 a first biasing force toward the distal side.
  • the closing biasing member is a closing return spring 61 , and can optionally be a compression spring disposed on the proximal side of the closing rod assembly 50 .
  • a spring matching stepped surface 5012 is disposed inside the second outer casing portion 501 of the closing rod assembly 50 , and the closing return spring 61 is disposed between the spring fitting stepped surface 5012 and the stopper portion 14 .
  • the closing biasing member may also be an elastic piece, a tension spring disposed on the distal side of the closing rod assembly 50 or other types of elastic members.
  • the closing return spring 61 basically does not deform or only slightly deforms. Under the action of the first biasing force of the closing return spring 61 , the closing pull rod assembly 50 is kept at the initial position, and the switching driving member 7 is kept in the first position area. By means of the closing return spring 61 , the state stability of the closing switch mechanism can be further maintained when no external force is applied.
  • the switching driving member 7 applies a more uniform force toward the proximal side to the closing rod assembly 50, and drives the closing rod assembly 50 to move in the first direction, that is, to move toward the proximal side of the stapler.
  • the closing rod assembly 50 drives the second pivoting part 422 to move in the first direction through the third driving part 502 .
  • the second outer sleeve part 501 drives the closing pull tab 12 to move toward the proximal side, closing the nail head.
  • the first driving part 72 is located on the side of the second driving part 411 facing the connecting rod 18, and the first driving part 72 is opposite to the second driving part 411.
  • between the opposite surfaces of the first driving part 72 and the second driving part 411 refers to between the lower surface of the first driving part 72 and the upper surface of the second driving part 411 .
  • the connecting rod assembly 4 is in a relatively stable second state, and under the action of the connecting rod assembly 4, the closing pull rod assembly 50 and the switching driving member 7 are also in a relatively stable state , so as to maintain the stability of the nail head after it is closed.
  • hold the firing handle 3, and the stapler can be fired by driving the rack in the stapler body (refer to the rack 21 in FIG. 3 of the first embodiment).
  • the third pivotal part 413 of the first lever 41 is provided with the second drive part 411
  • the switching drive member 7 includes two first drive parts 72
  • the first The second driving portion 411 includes two mating surfaces opposite to the two first driving portions 72 , and the two mating surfaces are respectively located on the left and right sides of the fourth pivot portion 423 .
  • the two first driving parts 72 are arranged symmetrically with respect to the axial direction of the stapler, and are arranged corresponding to the two mating surfaces of the second driving part 411 .
  • the guide part 5021 is a convex line provided on the side of the third drive part 502 , and one guide part 5021 can be provided on the left and right sides of the third drive part 502 .
  • the distal side of the third driving part 502 is provided with a first matching hole 5022 for installing the third pin shaft 45 .
  • the number of the first driving part 72 is not limited to two, for example, only one first driving part 72 is provided.
  • the installation position and manner of the closing return spring 61 and the switching return spring 62 may also be different from this embodiment.
  • the second driving part 411 can also be arranged on the fourth pivot part 423 , or be arranged on other positions of the first rod 41 or the second rod 42 .
  • the guide part 5021 may also be set as a boss or other structures.
  • a switching biasing member is provided between the switching driving member 7 and the closing rod assembly 50, and when the switching driving member 7 rotates in the fifth direction, the switching biasing member Elastic deformation occurs, and a second biasing force to rotate in the sixth direction is given to the switching driving member 7 .
  • the proximal end surface of the switching driving member 7 at least partially bears against the closing rod assembly 50, specifically, the first outer sleeve portion 71 of the switching driving member 7
  • the proximal surface is at least partially abutted against the switching matching surface 5013 of the second outer sleeve portion 501 of the closing rod assembly 50 .
  • a second spring installation portion 74 is provided on the surface of the first outer sleeve portion 71 of the switching driving member 7, and a first spring installation portion 5014 is provided on the proximal end portion of the first outer sleeve portion 501 of the closing rod assembly 50.
  • the switch biasing member is a switch return spring 62, and can optionally be a tension spring. Two ends of the switching return spring 62 are installed on the first spring installation part 5014 and the second spring installation part 74 respectively.
  • the first spring installation part 5014 and the second spring installation part 74 are respectively a boss protruding from the surface of the second outer casing part 501 and a post protruding from the surface of the first outer casing part 71. Boss.
  • the switching biasing member can also be a torsion spring sleeved on the rotating shaft 5023, or the switching biasing member is a tension spring or a compression spring, and both ends are fixed on Other positions of the switching drive member 7 and the closing rod assembly 50 .
  • two switching biasing members are provided, and the two switching biasing members are arranged symmetrically with respect to the axial direction of the stapler so as to act on the switching driving member 7 more uniformly.
  • the present invention is not limited thereto. In other alternative implementation manners, for example, only one switching bias member or more switching bias members may be provided.
  • the stapler can be fired by holding the firing handle 3 .
  • the states of the link assembly 4, the closing rod assembly 50 and the switching drive member 7 will not change, that is, the link assembly 4 remains In the second state, the switching driving member 7 remains in the second position area, and the closing pull piece 12 will not move accidentally in the axial direction, so as to keep the nail head closed stably.
  • the operator operates the operating part 73 protruding from the outside of the housing 13 to drive it to move in the direction of the distal end, so that the switching drive member 7 is relatively close to the closing rod assembly 50.
  • Rotate around the rotation axis 5023, and the rotation direction is the fifth direction.
  • the fifth direction is the S3 direction shown in FIG. 21 , that is, the counterclockwise direction in the viewing angle of FIG. 21 .
  • the first driving part 72 presses the second driving part 411 in a direction away from the connecting rod 18, so that the second driving part 411
  • the driving part 411 drives the third pivotal part 413 and the fourth pivotal part 423 to move in a fourth direction, that is, to move away from the connecting rod 18, so that the connecting rod assembly 4 enters the first state .
  • the connecting rod assembly 4 returning from the second state to the first state in the perspective of FIG.
  • the second pivot part 422 moves in the second direction, that is, moves toward the distal side of the stapler, and the second pivot part 422 drives the third
  • the driving part 502 moves in the direction of the distal end, and then drives the switching driving member 7 to also move in the direction of the distal end to the first position area.
  • the second jacket part 501 drives the closing pull tab 12 to move toward the distal side, so as to open the nail head.
  • the closing return spring 61 also returns to the initial state, and the first biasing force of the closing return spring 61 further ensures that the closing pull rod assembly 50 can return to the initial position.
  • the link assembly 4 can be driven from the second state to the first state, and the closing rod assembly 50 can be driven to the distal end.
  • the switching return spring 62 (not shown in the figure) is elongated and elastically deformed. At this time, the operator releases the operation part 73, and the operation part 73 loses the effect of external force. Under the action of the second biasing force of the switching return spring 62, the switching driving member 7 rotates along the sixth direction and returns to the initial position (that is, the position and state of the switching driving member 7 shown in FIG. 19 ) .
  • the sixth direction is the S4 direction shown in FIG. 23 , that is, the clockwise direction in the viewing angle of FIG. 23 .
  • the second driving part of the linkage assembly 4 may be a raised part 414 provided at the third pivot part 413, and the raised part 414 protrudes in the direction of the connecting rod 18 relative to the first rod 41 .
  • the connecting rod assembly 4 is in the second state and the switching driving member 7 is not rotated by external force, there is a certain distance between the lower surface of the first driving part 72 and the top end of the protruding part 414 . The height gap, the switching drive member 7 will not act on the raised portion 414 .
  • the structure of the switching driving member is different from that of the first embodiment.
  • the switching driving member is fixed in the axial direction relative to the closing rod assembly, and the switching driving member can move in a third direction relative to the closing rod assembly, and the third direction is the same as the closing rod assembly.
  • a fixed angle is set between the first direction or the second direction.
  • the fourth embodiment of the present invention provides a closing switching mechanism for a medical stapler and a medical stapler including the closing switching mechanism.
  • the main components of the stapler and the switching of the open and closed states of the nail head can be referred to the description in the first embodiment with reference to FIG. 1 and FIG. 2 , and will not be repeated here.
  • the closing switching mechanism includes a link assembly 4 , a switching driving member 7 and a closing pull rod assembly 50 .
  • the link assembly 4 includes a first rod 41 and a second rod 42, the second rod 42 is located on the proximal side of the first rod 41, and the first rod 41 includes a first pivot portion 412 and a second rod 41.
  • the matching structure of the first rod 41 and the second rod 42 and the closing rod assembly 50 is the same as that of the first embodiment, and will not be repeated here.
  • the closing rod assembly 50 is fixedly connected to the proximal side of the closing pull piece 12 , so that the axial movement of the closing pull rod assembly 50 can drive the axial movement of the closing pull piece 12 .
  • the switching driving member 7 is fixed in the axial direction of the stapler relative to the closing rod assembly 50, and the switching driving member 7 can move in a seventh direction relative to the closing rod assembly 50, and the seventh direction A fixed angle is set between the first direction or the second direction.
  • being fixed in the axial direction of the stapler means that the switching driving member 7 will not be displaced in the axial direction relative to the closing rod assembly 50 .
  • the switching driving member 7 can move in a first direction and a second direction, and the first direction and the second direction are two opposite directions. And when the switching driving member 7 moves in the axial direction, the closing rod assembly 50 also moves in the axial direction together with the switching driving member 7 .
  • the link assembly 4 includes a first state and a second state, both of which are relatively balanced states.
  • the switching drive 7 comprises a first position area and a second position area. As shown in FIG. 28 and FIG. 29 , in the initial state, the linkage assembly 4 is in the first state, and the linkage assembly 4 is in a relatively compact state, that is, the first pivot portion 412 and the second The axial distance between the two pivotal parts 422 is relatively small, and the switching driving member 7 is in the first position area.
  • the closing rod assembly 50 is driven to move toward the first direction, and the second pivot joint 422 is driven toward the first direction.
  • the third pivot portion 413 and the fourth pivot portion 423 rotate relatively, and the link assembly 4 enters the second state.
  • the connecting rod assembly 4 enters a relatively stretched state, the axial distance between the first pivotal portion 412 and the second pivotal portion 422 increases, and The first pivot portion 412 has no axial displacement relative to the stapler body 1 .
  • the closing pull rod assembly 50 drives the closing pull piece 12 to move in the first direction to close the nail head.
  • the connecting rod assembly 4 is in the relatively stable second state, and the switching drive member 7 is located in the second position area. In this way, the stability of the closure of the nail head can be maintained, and the firing of the stapler can be performed. When the stapler is fired, the closure tab 12 will not accidentally move and affect the stability of the nail head closure.
  • the switching drive member 7 is operated to move in the seventh direction relative to the closing pull rod assembly 50 to drive the connecting rod assembly 4 from the second state to the first state.
  • the second pivot portion 422 of the link assembly 4 drives the closing rod assembly 50 to move in the second direction, and the closing rod assembly 50 can drive the switching driving member 7 to move in the second direction and return to the first At the same time, the closing pull rod assembly 50 drives the closing pull piece 12 to move toward the distal side to open the nail head, so that the nail head can be opened manually, with simple structure and convenient operation.
  • the second location area is located proximally of the first location area.
  • Both the first direction and the second direction are along the axial direction of the stapler. Specifically, the first direction is toward the proximal side of the stapler (direction S1 in FIG. 25 ), and the second direction is toward the distal side of the stapler (direction opposite to S1).
  • the switching driving member 7 moves from the first position area to the proximal side, it can drive the nail head to close, and when the switching driving member 7 moves from the second position area to the distal side, it can drive the nail head to open. department.
  • the first position area refers to the position area where the switching drive member 7 is located in the initial state as shown in Figure 29, and the second position area refers to the completion of the nail head closure as shown in Figure 32 Afterwards, the position area where the driving member 7 is located is switched.
  • the closing switching mechanism further includes a connecting rod 18 .
  • the closing pull piece 12 passes through the inside of the connecting rod 18 .
  • the seventh direction is the direction from top to bottom in the viewing angle of FIG. direction.
  • the included angle between the seventh direction and the first direction is a right angle or an angle close to a right angle, and the switching driving member 7 moves in an up and down direction relative to the closing rod assembly 50 .
  • a third direction is defined here, and the third direction is the direction from bottom to top in the viewing angle of FIG. 18 directions.
  • Both the third direction and the fifth direction are perpendicular to the axial direction of the stapler, defined here as the longitudinal direction, and the two directions are opposite. As shown in FIG.
  • FIG. 29 it is a schematic structural diagram of the closing switching mechanism in the initial state of this embodiment.
  • the third pivotal portion 413 and the fourth pivotal portion 423 are in a position relatively far away from the connecting rod 18, and the connecting rod assembly 4 is in a relatively stable first state.
  • the axial distance between the first pivotal portion 412 and the second pivotal portion 422 is small.
  • the switching drive 7 is in the first position range.
  • the switching driving member 7 includes an operating part 73 , a first driving part 72 , a first connecting part and a connecting matching part 76 .
  • the operation part 73 is connected to the first connection part.
  • the first connecting portion is the first outer casing portion 71 .
  • the housing 13 is correspondingly provided with an accommodating groove for accommodating the operating portion 73 , the operating portion 13 partially enters the interior of the accommodating groove, is movable relative to the accommodating groove, and protrudes beyond the end of the stapler body 1 .
  • the outer surface of the housing 13 is convenient for the operator to use.
  • the first sleeve portion 71 is sheathed on the outside of the closing rod assembly 50 and can move axially relative to the connecting rod 18 .
  • the first driving part 72 and the connecting fitting part 76 are located on the side of the first outer sleeve part 71 facing the link assembly 4 , and the connecting fitting part 76 is located at the proximal end of the first driving part 72 side.
  • a second driving portion 46 is disposed at the third pivot portion 413 of the first rod 41 . In the initial state, the second driving part 46 is located at a position relatively away from the connecting rod 18 along with the third pivot part 413, and will not contact the first driving part 72, and the first driving part 72 The portion 72 will not apply force to the second driving portion 46 .
  • the second driving part 46 is integrated with the second pin, that is, the second driving part 46 is partly passed through the third pivot part 413 and the fourth pivot part 423 , so that the third pivotal part 413 and the fourth pivotal part 423 are pivotally connected, and the part of the second driving part 46 protrudes from the outside of the third pivotal part 413 and the fourth pivotal part 423
  • the surface is opposite to the first driving part 72 .
  • the closing rod assembly 50 includes a second outer casing part 501 and a third driving part 502 .
  • the second sheath portion 501 is sheathed on the outside of the connecting rod 18, the second sheath portion 501 includes a distal portion and a proximal portion, the outer diameter of the distal portion is smaller than the outer diameter of the proximal portion, so A switching mating surface 5013 is provided between the distal portion and the proximal portion of the second sheath portion 501 .
  • the distal end portion of the second sheath portion 501 is at least partially passed through the inside of the first sheath portion 71 of the switching fitting 7 , and the switching mating surface 5013 of the second sheathing portion 501 is in contact with the first sheathing portion. 71 of the proximal surface to match.
  • the proximal surface of the first sheath part 71 and the switching mating surface 5013 of the second sheath part 501 abut against each other.
  • the distal side of the second sheath part 501 is provided with a through hole 5011, and the connecting pin 19 passed through the through hole 5011 of the second sheath part 501 can connect the distal side of the second sheath part 501 with the The proximal side of the closure pull tab 12 is fixedly connected.
  • a first end of the third driving part 502 is pivotally connected to the second pivot part 422 of the second rod 42 , and a second end of the third driving part 502 is connected to the second outer sleeve part 501 .
  • One or two guiding parts 5021 are provided on the side of the third driving part 502 .
  • the inner surface of the shell 13 of the stapler body 1 is provided with one or two guide grooves 131, the guide grooves 131 extend in the axial direction, the guide part 5021 at least partially enters the guide grooves 131, and can Move along the extending direction of the guide groove 131 .
  • the cooperation of the guide portion 5021 and the guide groove 131 limits the movement of the closing pull rod assembly 5 only in the axial direction.
  • a guide part may also be provided on the inner surface of the casing 13 of the stapler body 1, and a guide groove may be provided on the side of the third driving part 502, which also belongs to the protection scope of the present invention. Inside.
  • the switch driving member 7 and the closing rod assembly 50 are connected through the cooperation of the boss and the sliding groove.
  • the connecting and matching part 76 is provided with a sliding slot 761, and the sliding slot 761 extends along the seventh direction
  • the third driving part 502 is provided with a protruding post 503, and the protruding post 503 at least partially enters the The inside of the chute 761 and can move along the extending direction of the chute 761 , that is, the protrusion 503 can move relative to the chute 761 along the longitudinal direction of the stapler.
  • the chute 761 includes a first section 7611 and a second section 7612 , the first section 7611 is located below the second section 7612 .
  • the protrusion 503 is located at the first section 7611 of the slide groove 761 .
  • the switching driving member 7 is operated to move downward by the operating portion 73 , the protrusion 503 enters the second section 7612 of the slide groove 761 .
  • the boss 503 can also be arranged on the second outer casing part 501, and in yet another embodiment, the boss 503 can also be arranged on the connection matching part 76, so
  • the third driving part 502 or the second outer casing part 501 is provided with a chute extending along the seventh direction, and the protrusion at least partially enters the chute.
  • the housing 13 of the stapler body 1 is provided with a stopper 14 inside, and the stopper 14 is located on the proximal side of the second outer sleeve 501 .
  • a closing biasing member is disposed between the closing rod assembly 50 and the stopper portion 14 , and the closing biasing member gives the closing rod assembly 50 a first biasing force toward the distal side.
  • the closing biasing member is a closing return spring 61 , and can optionally be a compression spring disposed between the second outer sleeve portion 501 of the closing rod assembly 50 and the stopper portion 14 .
  • the closing biasing member may also be an elastic piece, a tension spring disposed on the distal side of the closing rod assembly 50 or other types of elastic members.
  • the closing return spring 61 basically does not deform or only slightly deforms. Under the action of the first biasing force of the closing return spring 61 , the closing pull rod assembly 50 is kept at the initial position, and the switching driving member 7 is kept in the first position area. By means of the closing return spring 61 , the state stability of the closing switch mechanism can be further maintained when no external force is applied.
  • the operating portion 73 of the switching drive member 7 is operated, so that the switch drive member 7 moves from the first position area to the proximal side, and the connection matching portion of the switch drive member 7
  • the sliding groove 761 of 76 cooperates with the boss 503 to drive the third driving part 502 to move toward the proximal side.
  • the switching driving member 7 applies a more uniform force toward the proximal side to the closing rod assembly 50, and drives the closing rod assembly 50 to move in the first direction, that is, to move toward the proximal side of the stapler.
  • the closing rod assembly 50 drives the second pivoting part 422 to move along the first direction through the third driving part 502 .
  • the third pivotal part 413 and the fourth pivotal part 423 move along the third direction, that is, move upwards and approach the connecting rod 18 , and the first rod 41 goes counterclockwise around the first pivot 43 Rotate, the second lever 42 rotates clockwise around the third pivot 45, the linkage assembly 4 enters the second state, the first pivot 412 and the second pivot 422 The axial distance increases.
  • the state of the link assembly 4 is shown in FIG. 31
  • the state of the closing switching mechanism is shown in FIG. 32 . Comparing FIG. 32 and FIG. 29 , it can be seen that the switching driving member 7 moves to the proximal direction to the second position area, and the closing rod assembly 50 compresses the closing return spring 61 to generate elastic deformation.
  • the second outer sleeve part 501 drives the closing pull tab 12 to move toward the proximal side, closing the nail head.
  • the first driving part 72 is located on the side of the second driving part 46 facing the connecting rod 18 , and the first driving part 72 is opposite to the second driving part 46
  • between the surfaces of the first driving part 72 and the second driving part 46 means between the lower surface of the first driving part 72 and the upper surface of the second driving part 46 .
  • the connecting rod assembly 4 is in a relatively stable second state, and under the action of the connecting rod assembly 4, the closing pull rod assembly 50 and the switching driving member 7 are also in a relatively stable state , so as to maintain the stability of the nail head after it is closed.
  • the firing handle 3 is held, and the stapler can be fired by driving the rack in the stapler body (for example, referring to the rack 21 in FIG. 3 of the first embodiment).
  • the third pivotal portion 413 of the first lever 41 is provided with the second drive portion 46
  • the switching drive member 7 includes two first drive portions 72
  • the two first drive portions 72 The driving part 72 is arranged symmetrically with respect to the axial direction of the stapler. Both ends of the second driving part 46 protrude from the outer surfaces of the left and right sides of the pivot joint part 413 and are opposite to the two first driving parts 72 .
  • the side of the first driving part 72 facing the second driving part 46 is preferably a plane parallel to the axial direction.
  • the guide part 5021 is a convex line provided on the side of the third drive part 502 , and one guide part 5021 can be provided on the left and right sides of the third drive part 502 .
  • the distal side of the third driving part 502 is provided with a first matching hole 5022 for installing the third pin shaft 45 .
  • the third driving part 502 includes a first cavity 5024 , and the second rod 42 at least partially enters into the first cavity 5024 of the third driving part 502 .
  • the side of the second rod 42 facing the connecting rod 18 is provided with a relief groove 424, when the connecting rod assembly 4 is in the second state, the bottom 5015 of the second outer sleeve part 501 partially enters the connecting rod 18. In the step-off slot 424 mentioned above.
  • the protruding post provided on the closing rod assembly 50 is the protruding post 503 matched with the slide groove 761
  • the second spring installation part 74 is a post provided on the connecting fitting part 76 Body
  • the second spring mounting portion 74 is located below the boss 503 .
  • Both ends of the switching return spring 62 are respectively hung on the boss 503 and the second spring matching portion 74 .
  • two switching biasing members are provided, and the two switching biasing members are arranged symmetrically with respect to the axial direction of the stapler so as to act on the switching driving member 7 more uniformly.
  • the present invention is not limited thereto. In other alternative implementation manners, for example, only one switching bias member or more switching bias members may be provided.
  • the spring mounting part and the protruding post 503 provided on the closing rod assembly 503 may also be two separate independent parts.
  • the switching biasing member is a tension spring or a pressing spring, and both ends are fixed to other positions of the switching driving member 7 and the closing pull rod assembly 50 .
  • the stapler can be fired by holding the firing handle 3 .
  • the states of the link assembly 4, the closing rod assembly 50 and the switching drive member 7 will not change, that is, the link assembly 4 remains In the second state, the switching driving member 7 remains in the second position area, and the closing pull piece 12 will not move accidentally in the axial direction, so as to keep the nail head closed stably.
  • the operator operates the operating part 73 protruding from the outside of the housing 13 to drive it to move in the seventh direction, that is, in the perspective of FIG. 32 ,
  • the driving switch driving member 7 moves downward (moves in the direction opposite to the S2 direction), and the first driving part 72 presses the second driving part 46 in a direction away from the connecting rod 18 (along the seventh direction),
  • the second driving part 46 drives the third pivot part 413 and the fourth pivot part 423 to move away from the connecting rod 18 , so that the link assembly 4 enters the first state.
  • the link assembly 4 returning from the second state to the first state in the perspective of FIG.
  • the second pivot part 422 moves in the second direction, that is, moves toward the distal side of the stapler, and the second pivot part 422 drives the third
  • the driving part 502 moves in the direction of the distal end. Since the closing rod assembly 50 and the switch driving member 7 are relatively fixed in the axial direction through the boss 503 and the sliding groove 761, and the switching mating surface 5013 of the closing rod assembly 50 is opposed to the proximal surface of the switching driving member 7, the closing The pull rod assembly 50 further drives the switching driving member 7 to also move in the direction of the distal end to the first position area. At the same time, the second jacket part 501 drives the closing pull tab 12 to move toward the distal side, so as to open the nail head.
  • the closing return spring 61 also returns to the initial state, and the first biasing force of the closing return spring 61 further ensures that the closing pull rod assembly 50 can return to the initial position. At this time, the state of the closed switching mechanism is shown in FIG. 33 .
  • the link assembly 4 can be driven from the second state to the first state, and the closing rod assembly 50 can be driven to the distal end side. direction movement to open the nail head, so that the manual opening of the nail head can be realized, the structure is simple, and the operation is convenient.
  • the sliding slot 761 moves downward relative to the protruding post 503 as a whole, and the protruding post 503 enters into the second section 7612 of the sliding slot 761 .
  • the switching return spring 62 is elongated and elastically deformed.
  • the operator releases the operation part 73, and the operation part 73 loses the effect of external force.
  • the switching driving member 7 moves along the third direction (that is, moves upward) and returns to the initial position (that is, the switching driving member 7 shown in FIG. 29 position and state), the boss 503 re-enters the first section 7611 of the slide groove 761 .
  • FIGS. 34 to 38 are structural schematic diagrams of the closing switching mechanism of the fifth embodiment of the present invention.
  • the difference between the fifth embodiment and the fourth embodiment is that: in the fifth embodiment, the moving direction when the switching driving member 7 drives the nail head to open is different from that of the fourth embodiment.
  • the definition of the seventh direction is opposite to that of the fourth embodiment.
  • the direction S2 is the seventh direction, that is, the upward direction
  • the direction opposite to the direction S2 is the fourth direction, that is, the downward direction.
  • the switching driving member 7 When the link assembly 4 is in the second state and the switching driving member 7 moves in the seventh direction, the switching driving member 7 lifts the second driving part 46 upward, so that the third pivotal part 413 and the fourth pivot portion 423 move downwards (moving along the fourth direction), and move away from the connecting rod 18 to enter the first state.
  • FIG. 34 it is a schematic structural diagram of the closing switching mechanism when the link assembly 4 of this embodiment is in the first state.
  • the switching drive 7 is located in the first position area.
  • the switching driving member 7 is located on the proximal side of the second outer sleeve portion 501 , and the relative positions of the switching driving member 7 and the closing rod assembly 50 in the axial direction will not change.
  • the first outer sleeve portion 71 of the switching driving member 7 is sheathed on the outside of the connecting rod 18 , and the connecting matching portion 76 of the switching driving member 7 and the third driving member 50 pass through the sliding groove 761 and the protrusion 503
  • the connection realizes the relative fixation in the axial direction.
  • the protrusion 503 is located at the second section 7612 of the slide groove 761 (marked in FIG. 37 ), and the spring mounting portion 74 is located above the protrusion 503 . In the state shown in FIG.
  • the operating part 73 drives the switching driving member 7 to move to the second position in the direction of the proximal side, and drives the closing rod assembly 50 to move in the direction of the proximal side, and the third driving part 502 drives the second
  • the pivoting part 422 moves toward the proximal side, drives the link assembly 4 to enter the first state, and the second outer sleeve part 501 compresses the closing return spring 61 to generate elastic deformation, and simultaneously drives the closing pull piece 12 to move toward the proximal side, Close the nail head.
  • the closed switching mechanism is in the state shown in FIG. 35 .
  • the second drive part 46 is arranged on the second pivot part 422, and the second drive part 46 and the fourth pivot part 423 are respectively located on both sides of the third pin shaft 45 . Therefore, in this embodiment, the second driving part 46 is no longer integrated with the second pin shaft 44 . As shown in FIG. 36 , the second driving part 46 is located on the proximal side of the third pin shaft 45, the fourth pivot joint 423 is located on the distal side of the third pin shaft 45, and the first The two rods 42 form a lever structure that can rotate relative to the third pin shaft 45 .
  • the fourth pivotal portion 423 moves toward the direction close to the connecting rod 18 , and the second pivotal portion 422 moves relative to the first
  • the three-pin shaft 45 rotates clockwise, so that the second driving part 46 moves away from the connecting rod 18 .
  • the second pivot part 422 rotates counterclockwise relative to the third pin shaft 45, so that the fourth pivot part 423 Move in a direction away from the connecting rod 18 .
  • the switching driving member 7 includes two side walls, and the two side walls are respectively located on both sides of the third driving part 502 , and the first A driving portion 72 is a fourth pin connected between two side walls of the switching driving member 7 .
  • a matching groove 425 is disposed on a side of the second driving portion 46 away from the connecting rod.
  • the second jacket part 501 drives the closing pull tab 12 to move toward the distal side, so as to open the nail head.
  • the closing return spring 61 also returns to the initial state, and the first biasing force of the closing return spring 61 further ensures that the closing pull rod assembly 50 can return to the initial position.
  • the state of the closed switching mechanism is shown in FIG. 38 .
  • the link assembly 4 can be driven from the second state to the first state, and the closing rod assembly 50 can be driven to the distal end side. direction movement to open the nail head, so that the manual opening of the nail head can be realized, the structure is simple, and the operation is convenient.
  • the chute 761 moves upwards relative to the protruding post 503 as a whole, and the protruding post 503 enters into the first section 7611 of the chute 761 (shown in FIG. 37 ).
  • the switching return spring 62 is elongated and elastically deformed.
  • the operator releases the operation part 73, and the operation part 73 loses the effect of external force.
  • the switching driving member 7 moves downwards and returns to the initial position (that is, the position and state of the switching driving member 7 shown in FIG. 34 ), the The protrusion 503 re-enters the second section 7612 of the slide groove 761 .

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  • 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)
  • Surgical Instruments (AREA)

Abstract

L'invention concerne un mécanisme de commutation de fermeture et une agrafeuse médicale. Le mécanisme de commutation de fermeture comprend : un ensemble de liaison (4), l'ensemble de liaison (4) comprenant une première partie de pivot (412) et une seconde partie de pivot (422), la première partie de pivot (412) étant reliée avec faculté de pivotement à un corps d'agrafeuse (1), et l'ensemble de liaison (4) ayant un premier état et un second état ; un élément d'entraînement de commutation (7), l'élément d'entraînement de commutation (7) étant mobile dans une première direction et une seconde direction, et la première direction étant opposée à la seconde direction ; et un ensemble tige de traction de fermeture (5), l'ensemble tige de traction de fermeture (5) étant relié avec faculté de pivotement à la seconde partie de pivot (422), lorsque l'élément d'entraînement de commutation (7) se déplace dans la première direction, l'ensemble tige de traction de fermeture (5) est entraîné à se déplacer dans la première direction, de telle sorte que l'ensemble liaison (4) entre dans le second état à partir du premier état ; et l'élément d'entraînement de commutation (7) est conçu pour être utilisable pour entraîner l'ensemble de liaison (4) à entrer dans le premier état à partir du second état, et la seconde partie de pivot (422) entraîne l'ensemble tige de traction de fermeture (5) à se déplacer dans la seconde direction. Le mécanisme de commutation de fermeture et l'agrafeuse médicale peuvent effectuer la fermeture et l'ouverture manuelles d'une tête d'agrafe (9).
PCT/CN2022/138722 2021-12-14 2022-12-13 Mécanisme de commutation de fermeture et agrafeuse médicale WO2023109820A1 (fr)

Applications Claiming Priority (12)

Application Number Priority Date Filing Date Title
CN202123139600.0U CN217118484U (zh) 2021-12-14 2021-12-14 闭合切换机构及医用吻合器
CN202111529338.2 2021-12-14
CN202123142827.0 2021-12-14
CN202111529336.3 2021-12-14
CN202111529336.3A CN116262059A (zh) 2021-12-14 2021-12-14 闭合切换机构及医用吻合器
CN202123142827.0U CN217118488U (zh) 2021-12-14 2021-12-14 闭合切换机构及医用吻合器
CN202111529332.5 2021-12-14
CN202111529332.5A CN116262057A (zh) 2021-12-14 2021-12-14 闭合切换机构及医用吻合器
CN202123139600.0 2021-12-14
CN202123139637.3U CN217118485U (zh) 2021-12-14 2021-12-14 闭合切换机构及医用吻合器
CN202123139637.3 2021-12-14
CN202111529338.2A CN116262061A (zh) 2021-12-14 2021-12-14 闭合切换机构及医用吻合器

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JPH09238947A (ja) * 1996-03-12 1997-09-16 Olympus Optical Co Ltd 縫合器
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CN210903169U (zh) * 2019-05-10 2020-07-03 上海逸思医疗科技有限公司 一种医疗器械
CN217118489U (zh) * 2021-12-14 2022-08-05 天臣国际医疗科技股份有限公司 闭合切换机构及医用吻合器
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CN217118487U (zh) * 2021-12-14 2022-08-05 天臣国际医疗科技股份有限公司 驱动机构及医用吻合器
CN217118484U (zh) * 2021-12-14 2022-08-05 天臣国际医疗科技股份有限公司 闭合切换机构及医用吻合器
CN217118486U (zh) * 2021-12-14 2022-08-05 天臣国际医疗科技股份有限公司 闭合切换机构及医用吻合器

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09238947A (ja) * 1996-03-12 1997-09-16 Olympus Optical Co Ltd 縫合器
CN202950702U (zh) * 2012-10-18 2013-05-29 北京中法派尔特医疗设备有限公司 一种设有击发保险装置的缝合器
US20170027574A1 (en) * 2015-07-30 2017-02-02 Ethicon Endo-Surgery, Llc Surgical instrument comprising a system for bypassing an operational step of the surgical instrument
CN109199488A (zh) * 2017-07-03 2019-01-15 江苏风和医疗器材股份有限公司 外科器械
CN210903169U (zh) * 2019-05-10 2020-07-03 上海逸思医疗科技有限公司 一种医疗器械
CN217118489U (zh) * 2021-12-14 2022-08-05 天臣国际医疗科技股份有限公司 闭合切换机构及医用吻合器
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CN217118487U (zh) * 2021-12-14 2022-08-05 天臣国际医疗科技股份有限公司 驱动机构及医用吻合器
CN217118484U (zh) * 2021-12-14 2022-08-05 天臣国际医疗科技股份有限公司 闭合切换机构及医用吻合器
CN217118486U (zh) * 2021-12-14 2022-08-05 天臣国际医疗科技股份有限公司 闭合切换机构及医用吻合器

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