WO2019114495A1 - 钉仓组件及使用该钉仓组件的医用吻合器 - Google Patents

钉仓组件及使用该钉仓组件的医用吻合器 Download PDF

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Publication number
WO2019114495A1
WO2019114495A1 PCT/CN2018/115821 CN2018115821W WO2019114495A1 WO 2019114495 A1 WO2019114495 A1 WO 2019114495A1 CN 2018115821 W CN2018115821 W CN 2018115821W WO 2019114495 A1 WO2019114495 A1 WO 2019114495A1
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WO
WIPO (PCT)
Prior art keywords
cartridge assembly
cutter
distal end
cartridge
firing block
Prior art date
Application number
PCT/CN2018/115821
Other languages
English (en)
French (fr)
Inventor
叶艳平
舒拓
Original Assignee
苏州天臣国际医疗科技有限公司
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 CN201721746900.6U external-priority patent/CN208838053U/zh
Priority claimed from CN201711341435.2A external-priority patent/CN109953786B/zh
Priority claimed from CN201721746089.1U external-priority patent/CN208851552U/zh
Priority to EP18889587.4A priority Critical patent/EP3725235A4/en
Priority to US16/772,799 priority patent/US11337695B2/en
Priority to CA3084199A priority patent/CA3084199C/en
Application filed by 苏州天臣国际医疗科技有限公司 filed Critical 苏州天臣国际医疗科技有限公司
Priority to JP2020532939A priority patent/JP7049003B2/ja
Priority to RU2020118151A priority patent/RU2736182C1/ru
Priority to AU2018382026A priority patent/AU2018382026B2/en
Priority to BR112020011917-2A priority patent/BR112020011917B1/pt
Priority to KR1020207016169A priority patent/KR102469638B1/ko
Publication of WO2019114495A1 publication Critical patent/WO2019114495A1/zh

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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
    • A61B17/07207—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 the staples being applied sequentially
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B17/3205—Excision instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/03—Automatic limiting or abutting means, e.g. for safety
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/0046—Surgical instruments, devices or methods, e.g. tourniquets with a releasable handle; with handle and operating part separable
    • A61B2017/00473—Distal part, e.g. tip or head
    • 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
    • A61B2017/07214—Stapler heads
    • A61B2017/07257—Stapler heads characterised by its anvil
    • 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
    • A61B2017/07214—Stapler heads
    • A61B2017/07271—Stapler heads characterised by its cartridge
    • 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
    • A61B2017/07214—Stapler heads
    • A61B2017/07278—Stapler heads characterised by its sled or its staple holder
    • 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
    • A61B2017/07214—Stapler heads
    • A61B2017/07285—Stapler heads characterised by its cutter
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/03—Automatic limiting or abutting means, e.g. for safety
    • A61B2090/033—Abutting means, stops, e.g. abutting on tissue or skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/08—Accessories or related features not otherwise provided for
    • A61B2090/0814—Preventing re-use

Definitions

  • the invention belongs to the field of medical instruments, and in particular relates to a staple cartridge assembly and a medical stapler using the same.
  • the medical stapler is a medical device that is often used in the surgical operation of the intestines and other physiological tissues. It is a medical alternative to the traditional manual suture device. Due to the development of modern technology and the improvement of the production technology, it is currently used clinically.
  • the medical stapler is reliable in quality, easy to use, and suitable for tightness and tightness, especially its quick suturing, easy operation, few side effects and surgical complications, and sometimes the tumor surgery that could not be removed in the past can be removed by the lesion.
  • a linear medical stapler for minimally invasive surgery includes an instrument platform and a cartridge assembly mated with the instrument platform.
  • the instrument platform includes a housing and a firing handle pivotally disposed on the housing.
  • the cartridge assembly includes a staple cartridge holder and an anvil pivotally coupled to the staple cartridge holder, and the staple cartridge holder is detachably provided with a staple cartridge.
  • the cartridge assembly further includes a staple cartridge connector for connecting the instrument platform and the staple cartridge holder, the anvil, and the staple cartridge, wherein the staple cartridge connector is provided with a relatively movable pusher bar, and the pusher bar is coupled with the pushrod
  • the distal end of the pusher bar fixes all the knives.
  • the cutter closes the staple cartridge and the anvil during the advancement process, cuts the tissue between the staple cartridge and the anvil, and drives the firing block to push the pusher pieces sequentially. Outside the staple cartridge, the pusher pushes the staples out of the staple cartridge and fits over the tissue.
  • the instrument After the doctor completes the above-mentioned suture cutting operation, the instrument needs to be first reset, and then the cartridge assembly is replaced, so that the medical stapler performs the next suture operation, but some careless doctors or inexperienced doctors will not be replaced.
  • the next operation is performed in the case of a staple cartridge assembly that has been fired, which may result in a medical accident, ie, a resection is performed without suturing.
  • an embodiment of the present invention provides a cartridge assembly comprising:
  • a cartridge attachment member comprising a housing and a pusher bar located within the housing;
  • first jaw and a second jaw located at a distal end of the staple cartridge connector and openable/closable
  • a firing block movably disposed in the first jaw or the second jaw
  • a cutter located at a distal end of the pusher bar, and the cutter can push the firing block to move under the action of the pusher bar;
  • the proximal end of the first jaw is provided with a limiting portion
  • the cutting knife is provided with a securing portion
  • the pusher bar drives the cutting
  • the knife and the firing block move together toward a distal end of the cartridge assembly, the drive mechanism driving the cutter and the first jaw when the firing block is at a distal end of the cartridge assembly
  • the stop portion and the securing portion abut each other to restrict movement of the cutter to the distal end of the cartridge assembly.
  • the driving mechanism drives the cutter and the first a pair of jaws move relative to each other, the safety portion enters the limiting portion, and then the firing block abuts and drives when the pushing knife rod drives the cutter to continue moving toward the distal end of the cartridge assembly
  • the cutter is offset toward a side away from the first jaw, and the safety portion is disengaged from the limit portion.
  • the first jaw is an associated staple cartridge holder and a staple cartridge
  • the second jaw is an anvil
  • the limiting portion is located at the cartridge holder.
  • the driving mechanism is a driving member connected to the housing, and a side of the pushing knife bar adjacent to the driving member is provided with a boss when the protruding table is
  • the drive member drives the pusher bar to be offset toward a side away from the drive member such that the cutter faces toward the cartridge holder
  • One side is offset such that the insurance portion enters the limit portion.
  • a proximal end of the firing block is provided with a first abutting portion, and a distal end of the cutting blade is provided with a second abutting portion, when the first abutting portion
  • the firing block drives the cutter to be offset toward a side away from the cartridge holder such that the securing portion is disengaged from the limiting portion.
  • At least one of the first abutting portion and the second abutting portion is provided with a guiding portion.
  • one of the securing portion and the limiting portion is a convex portion, and the other is a groove.
  • the securing portion is a convex portion
  • the proximal end of the convex portion includes a first inclined surface
  • the limiting portion is a groove
  • the proximal end of the concave portion includes a second inclined surface
  • the slope of the first slope is the same as the slope of the second slope.
  • the distal end of the convex portion includes a first plane
  • the distal end of the concave portion includes a second plane
  • the driving member is a spring piece
  • the elastic piece drives the pusher bar away
  • the firing piece drives the cutting blade to be offset toward a side away from the magazine holder so that the pushing bar In the reset, the boss drives the elastic piece to be deformed toward a side away from the boss.
  • the pusher bar is provided with a notch on both sides of the boss, and when the elastic piece is separated from the boss, the elastic piece enters the notch and the The shrapnel remains in its original state.
  • the elastic piece is a U-shaped elastic piece.
  • the driving mechanism is a compression spring located at a proximal end of the cartridge assembly and connecting the cartridge holder and the anvil, when the pusher bar drives the cutter
  • the compression spring drives the cartridge holder to be offset toward a side close to the insurance portion such that the insurance portion enters the limit Position.
  • the proximal end of the firing block is provided with a first contact portion
  • the distal end of the cutter is provided with a second contact portion, when the first contact portion and the second portion
  • the firing block drives the cutter to be offset toward a side away from the cartridge holder such that the securing portion is disengaged from the limiting portion.
  • At least one of the first contact portion and the second contact portion is provided with a guiding portion.
  • the limiting portion includes a receiving groove on an outer surface of the magazine holder
  • the insurance portion includes a first end of the cutter
  • the first end is located At the outer surface of the cartridge holder, when the cutter moves to the receiving groove, the compression spring acts on the cartridge holder such that the first end enters the receiving groove when the firing block
  • the firing block drives the first end toward the side away from the cartridge holder such that the first end is disengaged from the receiving slot.
  • the limiting portion further includes a recess portion at a distal end of the receiving groove, the securing portion further comprising a protruding portion at a distal end of the first end portion, when When the first end is located in the receiving groove and the cutter continues to move toward the distal end of the cartridge assembly, the protruding portion and the recess portion are engaged with each other.
  • the limiting portion includes two recessed portions symmetrically distributed at a distal end of the receiving groove, and the securing portion includes two symmetrically distributed at a distal end of the first end portion Highlights.
  • the drive mechanism includes two compression springs symmetrically distributed on both sides of the cutter.
  • an embodiment of the present invention provides a medical stapler comprising the cartridge assembly of any of the above aspects.
  • the present invention has the beneficial effects that at least in the second firing process, the driving mechanism drives the cutter and the first jaw relative movement, so that the limiting portion and the insurance portion abut each other. Holding, thereby restricting the cutter from continuing to move to the distal end of the cartridge assembly, can effectively prevent the doctor from closing the instrument without replacing the fired cartridge assembly, avoiding a medical accident or causing damage to normal tissue
  • the structure is simple and effective.
  • FIG. 1 is a schematic structural view of a medical stapler according to an embodiment of the present invention.
  • FIG. 2 is a schematic view showing a partially exploded structure of a staple cartridge assembly according to an embodiment of the present invention
  • FIG. 3 is a schematic view of a staple cartridge frame according to an embodiment of the present invention.
  • FIG. 4 is a schematic view showing a combination of a staple cartridge holder, a staple cartridge, and an anvil according to an embodiment of the present invention
  • Figure 5 is a cross-sectional view taken along line K-K of Figure 4.
  • Figure 6 is a cross-sectional view taken along line L-L of Figure 5;
  • Figure 7 is a schematic exploded view of the staple cartridge assembly of the first embodiment of the present invention.
  • Figure 8 is a schematic view showing the combination of the pusher bar, the cutter and the firing block according to the first embodiment of the present invention
  • Figure 9 is a schematic view of a magazine holder according to a first embodiment of the present invention.
  • Figure 10 is a schematic view showing the staple cartridge assembly of the first embodiment of the present invention in an initial state
  • Figure 11 is a cross-sectional view taken along line A1-A1 of Figure 10;
  • Figure 12 is an enlarged view of a partial area of Figure 11;
  • Figure 13 is a cross-sectional view taken along line A2-A2 of Figure 10;
  • Figure 14 is an enlarged view of a partial area of Figure 13;
  • Figure 15 is a schematic view showing the process of entering and closing the cartridge assembly of the first embodiment of the present invention.
  • Figure 16 is a cross-sectional view taken along line B1-B1 of Figure 15;
  • Figure 17 is an enlarged view of a portion of Figure 16;
  • Figure 18 is a cross-sectional view taken along line B2-B2 of Figure 15;
  • Figure 19 is an enlarged view of a partial area of Figure 18;
  • Figure 20 is a schematic view showing the process of continuing the closing of the cartridge assembly of the first embodiment of the present invention.
  • Figure 21 is a cross-sectional view taken along line C1-C1 of Figure 20;
  • Figure 22 is an enlarged view of a partial area of Figure 21;
  • Figure 23 is a cross-sectional view taken along line C2-C2 of Figure 20;
  • Figure 24 is an enlarged view of a partial area of Figure 23;
  • Figure 25 is a schematic view showing the staple cartridge assembly of the first embodiment of the present invention fully closed
  • Figure 26 is a cross-sectional view taken along line D1-D1 of Figure 25;
  • Figure 27 is an enlarged view of a partial area of Figure 26;
  • Figure 28 is a cross-sectional view taken along line D2-D2 of Figure 25;
  • Figure 29 is an enlarged view of a partial area of Figure 28;
  • Figure 30 is a schematic view showing the process of secondary entry and closing of the cartridge assembly of the first embodiment of the present invention.
  • Figure 31 is a cross-sectional view taken along line E1-E1 of Figure 30;
  • Figure 32 is an enlarged view of a partial area of Figure 31;
  • Figure 33 is a cross-sectional view taken along line E2-E2 of Figure 30;
  • Figure 34 is an enlarged view of a partial area of Figure 33;
  • Figure 35 is a schematic exploded view of a staple cartridge assembly in accordance with a second embodiment of the present invention.
  • Figure 36 is a schematic view showing the combination of the pusher bar, the cutter and the firing block according to the second embodiment of the present invention.
  • Figure 37 is a schematic view of a magazine holder according to a second embodiment of the present invention.
  • Figure 38 is a schematic view showing the staple cartridge assembly of the second embodiment of the present invention in an initial state
  • Figure 39 is a cross-sectional view taken along line F1-F1 of Figure 38;
  • Figure 40 is an enlarged view of a partial area of Figure 39;
  • Figure 41 is a cross-sectional view taken along line F2-F2 of Figure 38;
  • Figure 42 is an enlarged view of a partial area of Figure 41;
  • Figure 43 is a bottom plan view showing the staple cartridge assembly of the second embodiment of the present invention in an initial state
  • Figure 44 is an enlarged view of a partial area of Figure 43;
  • Figure 45 is a schematic view showing the process of entering and closing the cartridge assembly of the second embodiment of the present invention.
  • Figure 46 is a cross-sectional view taken along line G1-G1 of Figure 45;
  • Figure 47 is an enlarged view of a partial area of Figure 46;
  • Figure 48 is a cross-sectional view taken along line G2-G2 of Figure 45;
  • Figure 49 is an enlarged view of a partial area of Figure 48;
  • Figure 50 is a bottom plan view showing the process of entering and closing the cartridge assembly of the second embodiment of the present invention.
  • Figure 51 is an enlarged view of a partial area of Figure 50;
  • Figure 52 is a schematic view showing the staple cartridge assembly of the second embodiment of the present invention fully closed
  • Figure 53 is a cross-sectional view taken along line H1-H1 of Figure 52;
  • Figure 54 is an enlarged view of a partial area of Figure 53;
  • Figure 55 is a cross-sectional view taken along line H2-H2 of Figure 52;
  • Figure 56 is an enlarged view of a partial area of Figure 55;
  • Figure 57 is a bottom plan view showing the staple cartridge assembly of the second embodiment of the present invention fully closed;
  • Figure 58 is an enlarged view of a partial area of Figure 57;
  • FIG. 59 is a schematic view showing a process of secondary entry and closing of a cartridge assembly according to a second embodiment of the present invention.
  • Figure 60 is a cross-sectional view taken along line J1-J1 of Figure 59;
  • Figure 61 is an enlarged view of a partial area of Figure 60;
  • Figure 62 is a cross-sectional view taken along line J2-J2 of Figure 59;
  • Figure 63 is an enlarged view of a partial area of Figure 62;
  • Figure 64 is a bottom plan view showing the process of secondary entry and closing of the cartridge assembly of the second embodiment of the present invention.
  • Figure 65 is an enlarged view of a partial area of Figure 64.
  • the medical stapler of the present invention is specifically explained by taking a laparoscopic surgical cutting stapler as an example, but it should be noted that the technical spirit involved in the following embodiments may be alternatively utilized. Go to other forms of stapler.
  • a medical stapler is used to apply a plurality of staples to a physiological tissue of a human body while correspondingly cutting the physiological tissue.
  • the medical stapler includes an instrument platform 10, a coil 20 that mates with the instrument platform 10, and a firing handle 30 that pivotally connects the instrument platform 10.
  • a push rod (not shown) is disposed in the instrument platform 10, and the push rod is movable relative to the outer casing of the instrument platform 10 by the firing handle 30.
  • the distal end of the instrument platform 10 is also provided with a cartridge assembly 40 that is detachably coupled to the instrument platform 10.
  • the cartridge assembly 40 includes a staple cartridge 41, an anvil 42, a cartridge holder 43, a cartridge attachment member 44, a cutter 45, and a joint 46 disposed at the distal end of the cartridge attachment member 44 for controlling the direction of rotation and rotation of the joint 46.
  • the angle allows the staple cartridge 41 and the region defined by the anvil 42 to be rotated relative to the staple cartridge connector 44 to accommodate a multi-angle cutting anastomosis procedure.
  • the staple cartridge holder 43 defines a support channel for mounting the staple cartridge 41 therein, the staple cartridge holder 43 for attaching the staple cartridge 41 to the staple cartridge connector 44.
  • the staple cartridge 41 and the anvil 42 are arranged to be relatively rotatable, and when the two are rotated to the open state, the operated target physiological tissue can be placed between the two, and then, The two are rotated to a closed state, and the target physiological tissue between the two is clamped for subsequent cutting and stitching operations.
  • the staple anvil at the proximal end of the anvil 42 is subjected to an external force to keep the anvil 42 and the staple cartridge 41 open, and the cutter 45 is located near the cartridge assembly 40. end.
  • the medical stapler/spin assembly 40 When the medical stapler/spin assembly 40 is in the closed state, driven by the cutter 45, the anvil 42 and the staple cartridge 41 are closed, during which the target physiological tissue can be clamped, and the cutter 45 is aligned with the medical state with respect to the initial state.
  • the distal end of the stapler/cartridge assembly 40 is moved a distance, but is still generally located at the proximal end of the cartridge assembly 40.
  • the anvil 42 and the staple cartridge 41 remain closed, and the cutter 45 is moved distally from the proximal end of the cartridge assembly 40, cutting the clamped physiological tissue, and At the distal end of the cartridge assembly 40, the limit is stopped to move.
  • the cartridge holder 43 includes a first abutment surface 432 that is remote from the anvil 42 and that mates with the first end 451 of the cutter 45; the anvil 42 includes a portion opposite the anvil surface and the cutter 45 The second end surface of the two end portions 452 cooperates.
  • the magazines 41, 421, and 431 of the matching cutter 45 are formed in the magazine 41, the anvil 42, and the magazine holder 43.
  • the cutter grooves 411, 421, 431 extend from the proximal end of the staple cartridge 41, the anvil 42, and the cartridge holder 43, respectively, to the distal end thereof.
  • the knife pockets 411, 421, 431 can cooperate to form a channel that allows the cutter 45 to move from the proximal end of the cartridge assembly 40 toward the distal direction, or the distal end toward the proximal direction.
  • the cartridge assembly 40 further includes a pusher bar 47 coupled to the proximal end of the cutter 45.
  • the pusher bar 47 can drive the cutter 45 from the proximal end to the distal end of the knife pockets 411, 421, 431, or distally to the proximal end. mobile.
  • the cutting grooves 411, 421, and 431 provide a moving path to the cutter 45 and the pusher bar 47 during the process, and simultaneously guide the same, and the region defined by the anvil 42 and the staple cartridge 41 is rotated relative to the staple cartridge connecting member 44.
  • the pusher bar 47 is also bent at a certain angle so that the cutter 45 can smoothly move toward the distal end of the medical stapler.
  • the proximal end of the magazine frame 43 is provided with a stop portion 434.
  • the stop portion 434 limits the staple cartridge 41 along the nail. The stacking direction of the magazine 41 and the magazine frame 43 is separated from the magazine frame 43.
  • the proximal end of the staple cartridge 41 is pressed by the stop portion 434.
  • the proximal end of the staple cartridge 41 does not appear to be deformed and lifted, so that the entire firing operation process is smoother.
  • the cartridge holder 43 is surrounded by a bottom portion 4301 and two side walls (4302, 4303) connecting the bottom portion 4301, and the stopper portion 434 is located on a side of the side wall (4302, 4303) away from the bottom portion 4301.
  • the cartridge assembly 40 includes two stops 434 at the two side walls (4302, 4303), and the two stops 434 are symmetrically disposed to achieve a stable limit on the proximal end of the staple cartridge 41.
  • the stop portion 434 is a protrusion 434.
  • One end of the protrusion 434 is connected to one side wall 4302, and the other end is extended toward the other side wall 4303.
  • the distal end of the projection 434 is provided with a chamfered portion 4341.
  • the chamfered portion 4341 is a slope 4341 that is inclined toward the proximal end of the bottom portion 4301 of the magazine frame 43.
  • the proximal end of the staple cartridge 41 is first inserted into the cartridge holder 43, and at this time, the proximal end of the staple cartridge 41 can be loaded into the cartridge holder 43 through the inclined surface 4341.
  • the first surface 4343 of the protrusion 434 near the bottom portion 4301 is a plane, and the first surface 4343 is parallel to the bottom portion 4301.
  • the second surface 4342 of the protrusion 434 away from the bottom portion 4301 is planar, and the second surface 4342 is flush with the side edges of the side walls (4302, 4303) away from the bottom portion 4301, thus avoiding the protrusion 434 during the closing process of the cartridge assembly 40
  • the anvil 42 is blocked.
  • the cartridge assembly 40 further includes a first jaw (not labeled), a second jaw that is openable/closed at the distal end of the cartridge connector 44. Marked), the firing block 49 and the drive mechanism 50.
  • the firing block 49 is movably disposed in the first jaw or the second jaw.
  • the cutter 45 can push the firing block 49 to move the pushing piece 49 (not labeled) to the staple cartridge under the action of the pushing rod 47.
  • the pusher pushes the staples out of the staple cartridge 41 and fits over the tissue.
  • the first clamp is connected to the staple cartridge holder 43 and the staple cartridge 41, and the second clamp is an anvil 42.
  • the firing block 49 is located in the staple cartridge 42, but is not limited thereto.
  • the proximal end of the first jaw is provided with a limiting portion 432, and the cutter 45 is provided with a securing portion 453.
  • the limiting portion 432 is provided at the proximal end of the magazine frame 43 as an example, but is not limited thereto.
  • the pusher bar 47 causes the cutter 45 and the firing block 49 to move together toward the distal end of the cartridge assembly 40 when the firing block 49 is located at the distal end of the cartridge assembly 40.
  • the driving mechanism 50 drives the cutter 45 and the first jaw to move relative to each other, and the limiting portion 432 and the securing portion 453 abut each other to restrict the cutter 45 from continuing to move toward the distal end of the cartridge assembly 40.
  • the pusher bar 47 drives the cutter 45 and the firing block 49 together toward the cartridge assembly 40. End movement; when the cutter 45 moves to the distal end of the cartridge assembly 40 twice (i.e., the new cartridge assembly 40 is not replaced, the firing block 49 is fired and is located at the distal end of the cartridge assembly 40), the drive mechanism 50 is driven.
  • the insurance portion 453 and the limiting portion 432 abut each other to restrict the cutter 45 from continuing to move to the distal end of the cartridge assembly 40, thereby effectively preventing the doctor from firing again after the firing has been completed, avoiding the occurrence of a medical accident or generating normal tissue. Damage, the structure is simple and effective.
  • the spacing between the firing block 49 and the cutter 45 is greater in the initial state, and when the firing block 49 is located at the proximal end of the cartridge assembly 40 and the cutter 45 is not in contact with the firing block 49, the drive mechanism 50 drives the cutting The knife 45 and the first jaw move relative to each other, and the securing portion 453 enters the limiting portion 432 to bring the cartridge assembly 40 into a secured state, and then when the pushing knife bar 47 drives the cutter 45 to continue moving toward the distal end of the cartridge assembly 40, The firing block 49 abuts and drives the cutter 45 toward the side away from the first jaw, the securing portion 453 is disengaged from the limiting portion 432, and the cartridge assembly 40 is released from the fuse.
  • the securing portion 453 has entered the limiting portion 432, and then the cutter 45 is acted upon by the firing block 49 to drive the securing portion 453 out of the limiting portion 432.
  • subsequent normal cutting and suturing operations but not limited thereto.
  • the distance between the firing block 49 and the cutter 45 in the initial state is small, and when the cutter 45 first moves toward the distal end of the cartridge assembly 40, the insurance portion 453 enters the limiting portion 432 and enters the insurance.
  • the firing block 49 Prior to the state, the firing block 49 has contacted the cutter 45 and causes the cutter 45 to move distally toward the cartridge assembly 40, i.e., during the initial movement of the cutter 45 toward the distal end of the cartridge assembly 40, the limit portion 432 is unrestricted.
  • the firing block 49 is at this time.
  • the cutter 45 is not actuated, and the drive mechanism 50 drives the limiting portion 432 and the securing portion 453 to abut each other to bring the cartridge assembly 40 into an insured state.
  • the cartridge assembly 40 of the present invention has a variety of embodiments. In the following, two embodiments of the cartridge assembly 40 of the present invention are described.
  • both embodiments take the example of "the distance between the firing block 49 and the cutter 45 is large", that is, before the firing block 49 interacts with the cutter 45, the securing portion 453 enters the limiting portion 432.
  • the cartridge assembly 40 is brought into an insured state.
  • the driving mechanism 50 is a driving member 50 that connects the housing 48.
  • the side of the pushing knife 47 near the driving member 50 is provided with a boss 471, and when the boss 471 is directed to the cartridge
  • the drive member 50 drives the pusher bar 47 to be offset toward the side away from the drive member 50, so that the cutter 45 is offset toward the side close to the cartridge holder 43 to insure
  • the portion 453 enters the limiting portion 432.
  • a first abutting portion 491 is disposed at a proximal end of the firing block 49, and a second abutting portion 454 is disposed at a distal end of the cutter 45.
  • the firing block 49 drives the cutter 45 to be offset from the side away from the cartridge holder 43 such that the securing portion 453 is disengaged from the limiting portion 432.
  • the second abutting portion 454 is a stud extending in a distal direction along the proximal end of the cartridge assembly 40.
  • At least one of the first abutting portion 491 and the second abutting portion 454 is provided with a guiding portion.
  • the curved surface 4911 at the proximal end of the first abutting portion 491 is used as the guiding portion 4911, and when the cutter 45 is relatively fired
  • the firing block 49 smoothly lifts the cutter 45 through the guide portion 4911, so that the securing portion 453 moves up and disengages from the stopper portion 432.
  • One of the securing portion 453 and the limiting portion 432 is a convex portion, and the other is a groove.
  • the securing portion 453 is a convex portion 453 .
  • two convex portions 453 are symmetrically disposed on the left and right sides of the cutter 45, and the convex portion 453 is
  • the proximal end includes a first slope 4531.
  • the limiting portion 432 is a groove 432.
  • two sides of the groove 431 of the magazine frame 43 are symmetrically disposed with two grooves 432.
  • the proximal end of the groove 432 includes a second inclined surface 4321, and the first inclined surface 4531 The slope is the same as the slope of the second slope 4321.
  • the distal end of the convex portion 453 includes a first flat surface 4532, and the distal end of the concave portion 432 includes a second flat surface 4322.
  • the angle between the opening of the first plane 4532 and the bottom surface (not labeled) of the convex portion 453 toward the proximal direction is an acute angle or a right angle, and similarly, between the second plane 4322 and the bottom surface of the recess 432 (not labeled)
  • the included angle is an acute angle or a right angle to achieve a more reliable limiting effect between the limiting portion 432 and the securing portion 453.
  • the convex portion 453 enters the recess 432, and as the cutter 45 continues to move distally, the firing block 49 drives the cutter 45 to move up, the convex portion
  • the 453 and the recess 432 do not interfere with each other in the closing direction of the cartridge assembly 40 such that the projection 453 can be easily disengaged from the recess 432; when the cutter 45 retracts toward the proximal end of the cartridge assembly 40 and the projection 453 re-enters the recess 432
  • the convex portion 453 is separated from the groove 432 by the interaction of the first inclined surface 4531 and the second inclined surface 4321; when the cutter 45 moves to the distal end of the cartridge assembly 40 again, the convex portion 453 enters the recess 432.
  • the firing block 49 is located at the distal end of the cartridge assembly 40, the cutter 45 cannot move up, the convex portion 453 gradually moves to the most distal end of the groove 432, and the first plane 4532 and the second plane 4322 interfere with each other, and the convex portion 453 cannot be separated. Groove 432.
  • the driving member 50 is a spring piece 50.
  • the elastic piece 50 drives the pushing knife bar 47 away from the elastic piece 50 in conjunction with FIG. 15 to FIG.
  • One side is offset and the elastic piece 50 remains in the initial state, and the securing portion 453 enters the limiting portion 432; referring to FIG. 20 to FIG.
  • the pusher bar 47 is provided with notches on the two sides of the boss 471 (the first notch 472 and the second notch 473, in conjunction with FIG. 12).
  • the elastic piece 50 When the elastic piece 50 is disengaged from the boss 471, the elastic piece 50 enters the notch and the elastic piece 50 Keep the initial state.
  • notches may extend from the boss 471 to both ends of the pusher bar 47, respectively.
  • the side portions of the pusher bar 47 sequentially include a smooth portion 474, a first recess 472, a convex portion 471 and a second recess 473, the first recess 472 and The second recess 473 is flush, and the smooth portion 474 is higher than the first recess 472.
  • the path of the elastic piece 50 includes the first recess 472, the convex portion 471 and the second recess 473.
  • the advantage of this design is that: (1) the elastic piece 50 does not exert force on the pusher bar 47 at the first notch 472 and the second notch 473, thereby avoiding affecting the walking path of the pusher bar 47 at the regions;
  • the elastic piece 50 has a certain deformation range to accommodate a small space in the housing 48;
  • the smoothing portion 474 maintains a high height to ensure the strength of the pusher bar 47.
  • the elastic piece 50 is a U-shaped elastic piece, and the two movable ends 502 of the elastic piece 50 (in conjunction with FIG. 12 ) are respectively engaged with the housing 48 .
  • the abutting end 501 of the elastic piece 50 is disposed adjacent to the pusher bar 47 and is opposite to the boss 471 . interaction.
  • the drive member 50 can be a rigid member, in which case the rigid member drives the pusher bar 47 away from rigidity as the boss 471 moves toward the distal end of the cartridge assembly 40 to the rigid member.
  • One side of the piece is offset, and the securing portion 453 enters the limiting portion 432; when the firing block 49 abuts the cutter 45, the firing block 49 drives the cutter 45 to be offset from the side away from the cartridge holder 43 to cause the pushing bar 47 is reset, and at the same time, the rigid member is separated from the boss 471, and the securing portion 453 is disengaged from the limiting portion 432.
  • the firing block 49 and the cutter 45 are both located at the proximal end of the cartridge assembly 40, the firing block 49 is not in contact with the cutter 45, and the dome 50 is located.
  • the first recess 472 is located and the elastic piece 50 is maintained in an initial state.
  • the pusher bar 47 drives the cutter 45 to move toward the distal end of the cartridge assembly 40, and the abutting end 501 of the elastic piece 50 abuts against the pusher bar 47.
  • the boss 471, the elastic piece 50 acts on the side of the pusher bar 47 to be offset toward the side of the magazine frame 43, so that the convex portion 453 on the cutter 45 enters the groove 432, and the cartridge assembly 40 enters the insurance state.
  • the distal end of the second abutting portion 454 of the cutter 45 comes into contact with the guide portion 4911 of the first abutting portion 491 of the firing block 49, and the elastic piece 50 maintains the initial state.
  • the pusher bar 47 causes the cutter 45 and the firing block 49 to move together toward the distal end of the cartridge assembly 40 until the cartridge assembly 40 is fully closed, the tab 50
  • the spring piece 50 is returned to the second recess 473, and the elastic piece 50 is restored to the initial state, and the rear push bar 47 drives the cutter 45 and the firing block 49 to perform the cutting and stitching operation.
  • the pusher bar 47 drives the cutter 45 to move toward the distal end of the cartridge assembly 40, and the abutting end 501 of the elastic piece 50 abuts the pusher bar.
  • the boss 471 of the 47, the elastic piece 50 acts on the side of the pusher bar 47 to be offset toward the side of the magazine frame 43, so that the convex portion 453 on the cutter 45 enters the groove 432.
  • the firing block 49 is located in the staple cartridge.
  • the cutter 45 cannot be moved up, the projection 453 cannot be disengaged from the recess 432, and the cartridge assembly 40 remains in an insured state, thereby preventing secondary firing.
  • FIG. 35 through 65 a schematic view of a staple cartridge assembly 40a in accordance with a second embodiment of the present invention is shown.
  • the driving mechanism 50 is a compression spring 50a located at the proximal end of the cartridge assembly 40a and connecting the cartridge holder 43a and the anvil 42a.
  • the compression spring 50a acts on the staple cartridge 41 and the anvil.
  • the proximal end of 42 causes the first jaw and the second jaw to open in an initial state.
  • the pusher bar 47a drives the cutter 45a to move toward the distal end of the cartridge assembly 40a to the limiting portion (including the receiving groove 432a of the outer surface of the cartridge holder 43a and the recess 433a of the distal end of the receiving groove 432a, see the detailed description below)
  • the compression spring 50a drives the cartridge holder 43a to be offset toward the side of the securing portion (including the first end portion 451a of the cutter 45a and the projection 453a at the distal end of the first end portion 451a, see below for details).
  • the insurance department enters the limit.
  • the first end of the firing block 49a is provided with a first contact portion 491a, and the distal end of the cutter 45a is provided with a second contact portion 454a.
  • the firing block 49a drives the cutting.
  • the knife 45a is offset toward the side away from the cartridge holder 43a such that the securing portion 453a is disengaged from the stopper portion 432a.
  • At least one of the first contact portion 491a and the second contact portion 454a is provided with a guiding portion.
  • the curved surface 4911a at the proximal end of the first contact portion 491a is used as the guiding portion 4911a, and when the cutter 45a is opposite to the firing block When the 49a moves toward the distal end of the cartridge assembly 40a, the firing block 49a smoothly presses the cutter 45a through the guiding portion 4911a, so that the securing portion moves downward and disengages from the limiting portion.
  • the limiting portion includes a receiving groove 432a on the outer surface of the magazine frame 43a
  • the insurance portion includes a first end portion 451a of the cutter 45a
  • the first end portion 451a is located at the outer surface of the magazine frame 43a.
  • the limiting portion further includes a recessed portion 433a at a distal end of the receiving groove 432a
  • the securing portion further includes a protruding portion 453a at a distal end of the first end portion 451a, when the first end portion 451a is located in the receiving groove 432a and the cutter 45a continues to
  • the protruding portion 453a and the recessed portion 433a are engaged with each other to ensure an insurance effect.
  • the limiting portion includes two recessed portions 433a symmetrically distributed at the distal end of the receiving groove 432a
  • the securing portion includes two protruding portions 453a symmetrically distributed at the distal end of the first end portion 451a.
  • the driving mechanism 50 includes a compression spring 50a on one side of the cutter 45a.
  • the magazine frame 43a is provided with a cavity 60a for accommodating the compression spring 50a.
  • the driving mechanism 50 may include a symmetric distribution on the cutter 45a. Two compression springs 50a on both sides.
  • the firing block 49a and the cutter 45a are both located at the proximal end of the cartridge assembly 40a, and the firing block 49a is not in contact with the cutter 45a, the cutter 45a
  • the first end portion 451a is located on the outer surface of the cartridge holder 43a and at the proximal end of the receiving groove 432a.
  • the pusher bar 47a moves the cutter 45a toward the distal end of the cartridge assembly 40a as the first end 451a of the cutter 45a moves to the receiving slot.
  • the compression spring 50a since the compression spring 50a always drives the opening angle of the distal end of the cartridge assembly 40a to the maximum, at this time, the compression spring 50a drives the cartridge holder 43a to move away from the anvil 42a, and the first end portion 451a just falls into the receiving groove.
  • the cartridge assembly 40a enters a secured condition, and the distal end of the second contact portion 454a of the cutter 45a begins to contact the guide portion 4911a of the first contact portion 491a of the firing block 49a as the cutter 45a continues to the cartridge assembly 40a.
  • the firing block 49a remains stationary, and the firing block 49a presses the cutter 45a by the interaction of the first contact portion 491a and the second contact portion 454a to cause the first end portion 451a to move downward, so that the first end portion The 451a is disengaged from the receiving groove 432a, and the cartridge assembly 40a is released from the insurance.
  • the pusher bar 47a moves the cutter 45a and the firing block 49a together toward the distal end of the cartridge assembly 40a until the cartridge assembly 40a is fully closed and then pushed back.
  • the cutter bar 47a drives the cutter 45a and the firing block 49a to perform a cutting and stitching operation.
  • the "the distance between the firing block 49 and the cutter 45 is small" that is, when it is closed for the first time, since the firing block 49 acts on the cutter 45, the insurance portion 453 cannot enter the limiting portion 432, and the cartridge assembly 40 enters the insurance state, the stapler can be fired; when the firing is completed, the firing block 49 remains at the distal end of the staple cartridge 41, because the resistance of the cutter block 45 to the cutter 45 is not generated, the insurance portion 453 cannot be separated from the limit portion. 432 and achieve insurance status.
  • the firing block 49a is located at the distal end of the cartridge assembly 40a, the cutter 45a cannot be moved down, the first end portion 451a cannot be detached from the accommodating groove 432a, and the cartridge assembly 40 is kept in an insured state, thereby preventing two The firing is performed.
  • the cutter 45a continues to move toward the distal end of the cartridge assembly 40a, the protruding portion 453a and the recessed portion 433a are engaged with each other, so that the cutter 45a is more stably coupled with the cartridge holder 43a, and the insurance is more secure.
  • the above two embodiments are only examples of the cartridge assembly 40 of the present invention, and the two embodiments may also be combined, replaced, and the like to form a new embodiment.
  • the first embodiment may also be used.
  • a compression spring is included to control the opening angle of the distal end of the cartridge assembly 40.

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Abstract

一种钉仓组件(40)及使用钉仓组件(40)的医用吻合器，钉仓组件(40)包括推刀杆(47)、第一钳夹、第二钳夹、击发块(49)、切刀(45)及驱动机构(50)，第一钳夹的近端设有限位部(432)，切刀(45)设有保险部(453)，当击发块(49)位于钉仓组件(40)的近端时，推刀杆(47)带动切刀(45)及击发块(49)一起向钉仓组件(40)的远端移动，当击发块(49)位于钉仓组件(40)的远端时，驱动机构(50)驱动切刀(45)及第一钳夹相对运动，限位部(432)与保险部(453)相互抵持而限制切刀(45)继续向钉仓组件(40)的远端运动。钉仓组件(40)通过驱动机构(50)驱动切刀(45)及第一钳夹相对运动而使得限位部(432)与保险部(453)相互抵持，从而限制切刀(45)继续向钉仓组件(40)的远端运动，可以有效防止医生在未更换已击发的钉仓组件(40)的情况下闭合器械，避免医疗事故的发生或对正常组织产生伤害。

Description

钉仓组件及使用该钉仓组件的医用吻合器
本申请要求了申请日为2017年12月14日，申请号为201711341435.2，发明名称为“钉仓组件及使用该钉仓组件的医用吻合器”的中国专利申请、申请日为2017年12月14日，申请号为201721746900.6，发明名称为“钉仓组件及使用该钉仓组件的医用吻合器”的中国专利申请、申请日为2017年12月14日，申请号为201721746089.1，发明名称为“钉仓组件及使用该钉仓组件的医用吻合器”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明属于医疗器械领域，具体涉及一种钉仓组件及使用该钉仓组件的医用吻合器。
背景技术
医用吻合器是对肠道等生理组织进行外科手术时经常使用的一种医疗器械，它是医学上使用的替代传统手工缝合的设备，由于现代科技的发展和制作技术的改进，目前临床上使用的医用吻合器质量可靠，使用方便，严密、松紧合适，尤其是其缝合快速、操作简便及很少有副作用和手术并发症等优点，有时还使得过去无法切除的肿瘤手术得以病灶切除，很受国内外临床外科医生的青睐和推崇，该仪器性能的差异对于整个手术效果起着至关重要的作用。
现有技术中，用于微创手术的直线型医用吻合器，包括一器械平台及与器械平台配合的钉仓组件，器械平台包括外壳及一枢轴设于外壳上的击发把手，该外壳内设有一个可相对移动的推杆，推杆能推动位于外壳前端的钉仓组件进行缝合和切割。
具体的，钉仓组件包括一钉仓架及一与钉仓架枢轴连接的钉砧，钉仓架上可拆卸地设有钉仓。
钉仓组件还包括用于连接器械平台及钉仓架、钉砧、钉仓的钉仓连接件，钉仓连接件内设有一个可相对移动的推刀杆，推刀杆与推杆配接，推刀杆的远端固定一切刀，该切刀在前进的过程中将钉仓和钉砧闭合，将位于钉仓和钉砧间的组织切断，并驱动击发块将推钉片依次推出于钉仓外，进而推钉片将缝合钉推出于钉仓外并订合在组织上。
医生完成上述的缝切动作后，首先需要将器械复位，继而更换钉仓组件，以便医用吻合器进行下一次的缝切手术，但是，由于一些粗心的医生或者经验不足的医生，会在未更换已击发的钉仓组件的情况下进行下一次的手术，这样会导致医疗事故的产生，即进行了切除却没有缝合。
发明内容
本发明的目的在于提供一种钉仓组件及使用该钉仓组件的医用吻合器。
为实现上述发明目的之一，本发明一实施方式提供一种钉仓组件，包括：
钉仓连接件，其包括壳体及位于所述壳体内的推刀杆；
位于所述钉仓连接件远端且可打开/闭合的第一钳夹及第二钳夹；
击发块，可移动地设置于所述第一钳夹或第二钳夹内；
切刀，位于所述推刀杆的远端，且所述切刀在所述推刀杆的作用下可推动所述击发块移动；
驱动机构；
其中，所述第一钳夹的近端设有限位部，所述切刀设有保险部，当所述击发块位于所述钉仓组件的近端时，所述推刀杆带动所述切刀及所述击发块一起向所述钉仓组件的远端移动，当所述击发块位于所述钉仓组件的远端时，所述驱动机构驱动所述切刀及所述第一钳夹相对运动，所述限位部与所述保险部相互抵持而限制所述切刀继续向所述钉仓组件的远端运动。
作为本发明一实施方式的进一步改进，当所述击发块位于所述钉仓组件的近端且所述切刀未接触所述击发块时，所述驱动机构驱动所述切刀及所述第一钳夹相对运动，所述保险部进入所述限位部，而后当所述推刀杆带动所述切刀继续向所述钉仓组件的远端移动时，所述击发块抵接并带动所述切刀朝远离所述第一钳夹的一侧偏移，所述保险部脱离所述限位部。
作为本发明一实施方式的进一步改进，所述第一钳夹为相连的钉仓架及钉仓，所述第二钳夹为钉砧，所述限位部位于所述钉仓架。
作为本发明一实施方式的进一步改进，所述驱动机构为连接所述壳体的驱动件，所述推刀杆 靠近所述驱动件的一侧设有凸台，当所述凸台向所述钉仓组件的远端移动至所述驱动件处时，所述驱动件驱动所述推刀杆朝远离所述驱动件的一侧偏移，从而所述切刀朝靠近所述钉仓架的一侧偏移而使得所述保险部进入所述限位部。
作为本发明一实施方式的进一步改进，所述击发块的近端设有第一抵持部，所述切刀的远端设有第二抵持部，当所述第一抵持部与所述第二抵持部相互抵持时，所述击发块带动所述切刀朝远离所述钉仓架的一侧偏移而使得所述保险部脱离所述限位部。
作为本发明一实施方式的进一步改进，所述第一抵持部及所述第二抵持部的至少其中之一上设有导向部。
作为本发明一实施方式的进一步改进，所述保险部及所述限位部的其中之一为凸部，其中另一为凹槽。
作为本发明一实施方式的进一步改进，所述保险部为凸部，所述凸部的近端包括第一斜面，所述限位部为凹槽，所述凹槽的近端包括第二斜面，所述第一斜面与所述第二斜面的斜率相同。
作为本发明一实施方式的进一步改进，所述凸部的远端包括第一平面，所述凹槽的远端包括第二平面，当所述凸部位于所述凹槽的最远端时，所述第一平面与所述第二平面相互干涉以限制所述凸部脱离所述凹槽。
作为本发明一实施方式的进一步改进，所述驱动件为弹片，当所述凸台向所述钉仓组件的远端移动至所述弹片处时，所述弹片驱动所述推刀杆朝远离所述弹片的一侧偏移，当所述击发块抵接所述切刀时，所述击发块带动所述切刀朝远离所述钉仓架的一侧偏移而使得所述推刀杆复位，所述凸台驱动所述弹片朝远离所述凸台的一侧变形。
作为本发明一实施方式的进一步改进，所述推刀杆于所述凸台的两侧设有凹口，当所述弹片脱离所述凸台时，所述弹片进入所述凹口且所述弹片保持初始状态。
作为本发明一实施方式的进一步改进，所述弹片为U型弹片。
作为本发明一实施方式的进一步改进，所述驱动机构为位于所述钉仓组件近端且连接所述钉仓架及所述钉砧的压簧，当所述推刀杆带动所述切刀向所述钉仓组件的远端移动至所述限位部处时，所述压簧驱动所述钉仓架朝靠近所述保险部的一侧偏移而使得所述保险部进入所述限位部。
作为本发明一实施方式的进一步改进，所述击发块的近端设有第一接触部，所述切刀的远端设有第二接触部，当所述第一接触部与所述第二接触部相互抵持时，所述击发块带动所述切刀朝远离所述钉仓架的一侧偏移而使得所述保险部脱离所述限位部。
作为本发明一实施方式的进一步改进，所述第一接触部及所述第二接触部的至少其中之一上设有导引部。
作为本发明一实施方式的进一步改进，所述限位部包括位于所述钉仓架外表面的容纳槽，所述保险部包括所述切刀的第一端部，所述第一端部位于钉仓架外表面处，当所述切刀移动至所述容纳槽处时，所述压簧作用所述钉仓架而使得所述第一端部进入所述容纳槽，当所述击发块抵接所述切刀时，所述击发块带动所述第一端部朝远离所述钉仓架的一侧偏移而使得所述第一端部脱离所述容纳槽。
作为本发明一实施方式的进一步改进，所述限位部还包括位于所述容纳槽远端的凹陷部，所述保险部还包括位于所述第一端部远端的突出部，当所述第一端部位于所述容纳槽内且所述切刀继续向所述钉仓组件的远端运动时，所述突出部与所述凹陷部相互卡接。
作为本发明一实施方式的进一步改进，所述限位部包括对称分布于所述容纳槽远端的两个凹陷部，所述保险部包括对称分布于所述第一端部远端的两个突出部。
作为本发明一实施方式的进一步改进，所述驱动机构包括对称分布于所述切刀两侧的两个压簧。
为实现上述发明目的之一，本发明一实施方式提供一种医用吻合器，包括如上任意一项技术方案所述的钉仓组件。
与现有技术相比，本发明的有益效果在于：本发明一实施方式至少在二次击发过程中，通过驱动机构驱动切刀及第一钳夹相对运动而使得限位部与保险部相互抵持，从而限制所述切刀继续向所述钉仓组件的远端运动，可以有效防止医生在未更换已击发的钉仓组件的情况下闭合器械，避免医疗事故的发生或对正常组织产生伤害，结构简单有效。
附图说明
图1是本发明一实施方式的医用吻合器结构示意图；
图2是本发明一实施方式中钉仓组件部分爆炸结构示意图；
图3是本发明一实施方式的钉仓架示意图；
图4是本发明一实施方式的钉仓架、钉仓及钉砧组合示意图；
图5是图4中K-K剖视图；
图6是图5中L-L剖视图；
图7是本发明第一实施方式的钉仓组件爆炸示意图；
图8是本发明第一实施方式的推刀杆、切刀及击发块组合示意图；
图9是本发明第一实施方式的钉仓架示意图；
图10是本发明第一实施方式的钉仓组件处于初始状态的示意图；
图11是图10中A1-A1剖视图；
图12是图11部分区域放大图；
图13是图10中A2-A2剖视图；
图14是图13中部分区域放大图；
图15是本发明第一实施方式的钉仓组件进入闭合过程的示意图；
图16是图15中B1-B1剖视图；
图17是图16部分区域放大图；
图18是图15中B2-B2剖视图；
图19是图18中部分区域放大图；
图20是本发明第一实施方式的钉仓组件继续闭合过程的示意图；
图21是图20中C1-C1剖视图；
图22是图21部分区域放大图；
图23是图20中C2-C2剖视图；
图24是图23中部分区域放大图；
图25是本发明第一实施方式的钉仓组件完全闭合的示意图；
图26是图25中D1-D1剖视图；
图27是图26部分区域放大图；
图28是图25中D2-D2剖视图；
图29是图28中部分区域放大图；
图30是本发明第一实施方式的钉仓组件二次进入闭合过程的示意图；
图31是图30中E1-E1剖视图；
图32是图31部分区域放大图；
图33是图30中E2-E2剖视图；
图34是图33中部分区域放大图；
图35是本发明第二实施方式的钉仓组件爆炸示意图；
图36是本发明第二实施方式的推刀杆、切刀及击发块组合示意图；
图37是本发明第二实施方式的钉仓架示意图；
图38是本发明第二实施方式的钉仓组件处于初始状态的示意图；
图39是图38中F1-F1剖视图；
图40是图39部分区域放大图；
图41是图38中F2-F2剖视图；
图42是图41中部分区域放大图；
图43是本发明第二实施方式的钉仓组件处于初始状态的仰视图；
图44是图43中部分区域放大图；
图45是本发明第二实施方式的钉仓组件进入闭合过程的示意图；
图46是图45中G1-G1剖视图；
图47是图46部分区域放大图；
图48是图45中G2-G2剖视图；
图49是图48中部分区域放大图；
图50是本发明第二实施方式的钉仓组件进入闭合过程的仰视图；
图51是图50中部分区域放大图；
图52是本发明第二实施方式的钉仓组件完全闭合的示意图；
图53是图52中H1-H1剖视图；
图54是图53部分区域放大图；
图55是图52中H2-H2剖视图；
图56是图55中部分区域放大图；
图57是本发明第二实施方式的钉仓组件完全闭合的仰视图；
图58是图57中部分区域放大图；
图59是本发明第二实施方式的钉仓组件二次进入闭合过程的示意图；
图60是图59中J1-J1剖视图；
图61是图60部分区域放大图；
图62是图59中J2-J2剖视图；
图63是图62中部分区域放大图；
图64是本发明第二实施方式的钉仓组件二次进入闭合过程的仰视图；
图65是图64中部分区域放大图。
具体实施方式
以下将结合附图所示的具体实施方式对本发明进行详细描述。但这些实施方式并不限制本发明，本领域的普通技术人员根据这些实施方式所做出的结构、方法、或功能上的变换均包含在本发明的保护范围内。
本发明内所描述的表达位置与方向的词，均是以器械操作者作为参照，靠近操作者的一端为近端，远离操作者的一端为远端。
在本发明的各个图示中，为了便于图示，结构或部分的某些尺寸会相对于其它结构或部分夸大，因此，仅用于图示本发明的主题的基本结构。
本文使用的例如“上”、“上方”、“下”、“下方”等表示空间相对位置的术语是出于便于说明的目的来描述如附图中所示的一个单元或特征相对于另一个单元或特征的关系。空间相对位置的术语可以旨在包括设备在使用或工作中除了图中所示方位以外的不同方位。例如，如果将图中的设备翻转，则被描述为位于其他单元或特征“下方”或“之下”的单元将位于其他单元或特征“上方”。因此，示例性术语“下方”可以囊括上方和下方这两种方位。设备可以以其他方式被定向(旋转90度或其他朝向)，并相应地解释本文使用的与空间相关的描述语。
在本发明的实施方式中，以腔镜外科切割吻合器为示例对本发明的医用吻合器做具体的阐释，但应当说明的是，在下述的实施方式中所涉及的技艺精神可以被替换地利用到其它形式的吻合器上。
如图1至图2所示，医用吻合器用于将多个缝合钉施加到人体的生理组织上，同时相应的对 生理组织实施切割。医用吻合器包括器械平台10、与器械平台10配接的旋圈20，以及枢轴连接器械平台10的击发把手30。
器械平台10内设置有推杆(未标示)，推杆在击发把手30作用下可相对器械平台10的外壳移动。
器械平台10的远端还设有钉仓组件40，钉仓组件40与器械平台10可拆卸连接。
钉仓组件40包括钉仓41、钉砧42、钉仓架43、钉仓连接件44、切刀45以及设置于钉仓连接件44远端的关节46，通过控制关节46的转动方向及转动角度，可使得钉仓41及钉砧42所限定区域相对钉仓连接件44转动，以适应多角度切割吻合手术。
当然，在钉仓组件40不能摆动的器械中也可以没有关节46。
钉仓架43限定了一支撑通道，以将钉仓41可安装地容纳在其中，钉仓架43用于将钉仓41连接至钉仓连接件44。
在本实施方式中，钉仓41和钉砧42被设置为可以相对地转动，当两者转动至打开状态时，被操作的目标生理组织可被置放于两者之间，随后，通过将两者转动至闭合状态，位于两者之间的目标生理组织被夹紧，以进行后续的切割及缝合操作。
当医用吻合器/钉仓组件40处于初始状态时，钉砧42近端的钉砧尾受到外力作用，以保持钉砧42和钉仓41呈打开状，切刀45位于钉仓组件40的近端。
当医用吻合器/钉仓组件40处于闭合状态时，受切刀45驱动，钉砧42和钉仓41闭合，其间可夹紧目标生理组织，切刀45相对于初始状态而言，向医用吻合器/钉仓组件40的远端移动了一定距离，但总体而言仍然位于钉仓组件40的近端。
当医用吻合器/钉仓组件40处于击发状态时，钉砧42和钉仓41仍然保持闭合，切刀45由钉仓组件40的近端向远端移动，切割夹紧的生理组织，并可在钉仓组件40的远端受到限位停止移动。
如图2所示，钉仓架43包括远离钉砧42且与切刀45的第一端部451配合的第一抵触面432；钉砧42包括与钉砧面相背且与切刀45的第二端部452配合的第二抵触面。
钉仓41、钉砧42、钉仓架43上形成有配合切刀45的走刀槽411、421、431。走刀槽411、421、431分别从钉仓41、钉砧42、钉仓架43的近端向其远端延伸。当钉仓41和钉砧42闭合后，走刀槽411、421、431可配合形成允许切刀45由钉仓组件40的近端朝向远端方向，或远端朝向近端方向移动的通道。
钉仓组件40还包括连接于切刀45近端的推刀杆47，推刀杆47可驱动切刀45由走刀槽411、421、431的近端向远端，或远端向近端移动。走刀槽411、421、431在此过程中对切刀45及推刀杆47提供运动路径且同时对其进行导向，当钉砧42及钉仓41所限定区域相对钉仓连接件44转动一定角度时，推刀杆47也随之弯曲一定的角度，以使得切刀45可以顺利地朝向医用吻合器的远端移动。
在本实施方式中，参见图3至图6，钉仓架43的近端设有止位部434，当钉仓架43与钉仓41相互配合时，止位部434限制钉仓41沿钉仓41及钉仓架43的叠加方向脱离钉仓架43。
这里，钉仓41的近端被止位部434压制，在医用吻合器击发过程中，钉仓41的近端不会出现变形翘起现象，使得整个击发运行过程更加顺畅。
钉仓架43由底部4301及连接底部4301的两个侧壁(4302、4303)围设而成，止位部434位于侧壁(4302、4303)远离底部4301的一侧。
钉仓组件40包括位于两个侧壁(4302、4303)处的两个止位部434，且两个止位部434对称设置，实现钉仓41近端的稳定限位。
在本实施方式中，止位部434为凸起434，凸起434一端连接一个侧壁4302，另一端朝向另一个侧壁4303延伸。
凸起434的远端设有倒角部4341。
这里，倒角部4341为朝向钉仓架43底部4301的近端倾斜的斜面4341。
当钉仓41组装入钉仓架43时，先将钉仓41的近端插入钉仓架43，此时，钉仓41的近端可以通过斜面4341组装入钉仓架43。
凸起434靠近底部4301的第一表面4343为平面，第一表面4343平行于底部4301，如此，当钉仓41组装入钉仓架43后，凸起434可以稳定配合于钉仓41表面。
凸起434远离底部4301的第二表面4342为平面，且第二表面4342与侧壁(4302、4303)远离底部4301的侧缘齐平，如此，避免凸起434在钉仓组件40闭合过程中阻碍钉砧42。
参图7至图9，在本发明一实施方式中，钉仓组件40还包括位于钉仓连接件44远端且可打开/闭合的第一钳夹(未标示)、第二钳夹(未标示)、击发块49以及驱动机构50。
击发块49可移动地设置于第一钳夹或第二钳夹内，切刀45在推刀杆47的作用下可推动击发块49移动而将推钉片(未标示)依次推出于钉仓41外，进而推钉片将缝合钉推出于钉仓41外并订合在组织上。
这里，以第一钳夹为相连的钉仓架43及钉仓41，第二钳夹为钉砧42为例，击发块49位于钉仓42内，但不以此为限。
参图8及图9，第一钳夹的近端设有限位部432，切刀45设有保险部453。
这里，以钉仓架43的近端设有限位部432为例，但不以此为限。
当击发块49位于钉仓组件40的近端时，推刀杆47带动切刀45及击发块49一起向钉仓组件40的远端移动，当击发块49位于钉仓组件40的远端时，驱动机构50驱动切刀45及第一钳夹相对运动，限位部432与保险部453相互抵持而限制切刀45继续向钉仓组件40的远端运动。
这里，当切刀45初次向钉仓组件40远端运动(即击发块49位于钉仓组件的近端)时，推刀杆47带动切刀45及击发块49一起向钉仓组件40的远端移动；当切刀45二次向钉仓组件40远端运动(即未更换新的钉仓组件40，击发块49击发完成并位于钉仓组件40的远端)时，驱动机构50会驱动保险部453与限位部432相互抵持而限制切刀45继续向钉仓组件40远端运动，从而有效防止医生在已经击发完成的情况下再次击发，避免医疗事故的发生或对正常组织产生伤害，结构简单有效。
下面，介绍当切刀45初次向钉仓组件40远端运动时，切刀45与击发块49的配合情况。
在一示例中，初始状态下击发块49与切刀45之间的间距较大，当击发块49位于钉仓组件40的近端且切刀45未接触击发块49时，驱动机构50驱动切刀45及第一钳夹相对运动，保险部453进入限位部432而使得钉仓组件40进入保险状态，而后当推刀杆47带动切刀45继续向钉仓组件40的远端移动时，击发块49抵接并带动切刀45朝远离第一钳夹的一侧偏移，保险部453脱离限位部432，钉仓组件40解除保险。
也就是说，在切刀45初次向钉仓组件40远端运动过程中，保险部453已经进入限位部432，而后，通过击发块49作用切刀45而带动保险部453脱离限位部432以进行后续正常的切割缝合操作，但不以此为限。
在另一示例中，初始状态下击发块49与切刀45之间的间距较小，当切刀45初次向钉仓组件40远端运动时，在保险部453进入限位部432而进入保险状态之前，击发块49就已经接触切刀45并带动切刀45向钉仓组件40远端运动，即在切刀45初次向钉仓组件40远端运动过程中，限位部432未能限制保险部453，此时器械可以击发；而后击发完成，击发块49留在钉仓组件40的远端，此时若驱动切刀45再次向钉仓组件40远端运动，由于此时击发块49位于钉仓组件40远端而无法作用切刀45，驱动机构50会驱动限位部432与保险部453相互抵持而使得钉仓组件40进入保险状态。
本发明的钉仓组件40具有多种实施方式，下面，介绍本发明钉仓组件40的两种实施方式。
为了方便说明，两个实施例均以“击发块49与切刀45之间的间距较大”为例，即在击发块49与切刀45相互作用之前，保险部453进入限位部432而使得钉仓组件40进入保险状态。
结合图10至图34，为本发明第一实施方式的钉仓组件40的示意图。
在本实施方式中，结合图10至图19，驱动机构50为连接壳体48的驱动件50，推刀杆47靠近驱动件50的一侧设有凸台471，当凸台471向钉仓组件40的远端移动至驱动件50处时，驱动件50驱动推刀杆47朝远离驱动件50的一侧偏移，从而切刀45朝靠近钉仓架43的一侧偏移而使得保险部453进入限位部432。
参图12，击发块49的近端设有第一抵持部491，切刀45的远端设有第二抵持部454，当第一抵持部491与第二抵持部454相互抵持时，击发块49带动切刀45朝远离钉仓架43的一侧偏移而使得保险部453脱离限位部432。
这里，第二抵持部454为沿钉仓组件40近端朝向远端方向延伸的凸柱。
第一抵持部491及第二抵持部454的至少其中之一上设有导向部，这里，以第一抵持部491近端的弧面4911作为导向部4911，当切刀45相对击发块49向钉仓组件40远端运动时，击发块49通过导向部4911顺利将切刀45抬起，从而使得保险部453上移而脱离限位部432。
保险部453及限位部432的其中之一为凸部，其中另一为凹槽。
在本实施方式中，参图14(结合图8及图9)，保险部453为凸部453，较佳的，切刀45的左右两侧对称设有两个凸部453，凸部453的近端包括第一斜面4531。
限位部432为凹槽432，较佳的，钉仓架43的走刀槽431的两侧对称设有两个凹槽432，凹槽432的近端包括第二斜面4321，第一斜面4531与第二斜面4321的斜率相同。
凸部453的远端包括第一平面4532，凹槽432的远端包括第二平面4322。
较佳的，第一平面4532与凸部453底面(未标示)之间开口朝向近端方向的夹角为锐角或直角，同样的，第二平面4322与凹槽432底面(未标示)之间的夹角为锐角或直角，以实现限位部432与保险部453之间更可靠的限制作用。
这里，当切刀45初次向钉仓组件40远端运动时，凸部453进入凹槽432内，随着切刀45继续向远端移动，进而击发块49带动切刀45上移，凸部453与凹槽432在钉仓组件40闭合方向上不相互干涉而使得凸部453可以轻松脱离凹槽432；当切刀45向钉仓组件40近端回退而凸部453再次进入凹槽432时，凸部453通过第一斜面4531及第二斜面4321的相互作用而脱离凹槽432；当切刀45再次向钉仓组件40远端运动时，凸部453进入凹槽432内，此时击发块49位于钉仓组件40的远端，切刀45无法上移，凸部453逐渐运动至凹槽432的最远端，第一平面4532与第二平面4322相互干涉，凸部453无法脱离凹槽432。
在本实施方式中，驱动件50为弹片50，结合图15至图19，当凸台471向钉仓组件40的远端移动至弹片50处时，弹片50驱动推刀杆47朝远离弹片50的一侧偏移且弹片50保持初始状态，保险部453进入限位部432；参见图20至图24，当击发块49抵接切刀45时，击发块49带动切刀45朝远离钉仓架43的一侧偏移而使得推刀杆47复位，凸台471驱动弹片50朝远离凸台471的一侧变形，保险部453脱离限位部432。
推刀杆47于凸台471的两侧设有凹口(第一凹口472及第二凹口473，结合图12)，当弹片50脱离凸台471时，弹片50进入凹口且弹片50保持初始状态。
需要说明的是，凹口分别可以从凸台471延伸至推刀杆47的两端。
这里，从钉仓组件远端朝向近端的方向上，推刀杆47的侧部依次包括平滑部474、第一凹口472、凸部471及第二凹口473，第一凹口472与第二凹口473齐平，平滑部474高出第一凹口472，弹片50所经路线包括第一凹口472、凸部471及第二凹口473。
这样设计的好处在于：(1)弹片50在第一凹口472与第二凹口473处对推刀杆47不施力，避免在该些区域处影响推刀杆47的行走路径；(2)弹片50具有一定的变形范围，以适应壳体48内狭小的空间；(3)平滑部474保持较高的高度，以保证推刀杆47的强度。
较佳的，弹片50为U型弹片，弹片50的两个活动端502(结合图12)分别卡接于壳体48，弹片50的抵持端501靠近推刀杆47设置且与凸台471相互作用。
可以理解的，在其他实施方式中，驱动件50可为刚性件，此时，当凸台471向钉仓组件40的远端移动至刚性件处时，刚性件驱动推刀杆47朝远离刚性件的一侧偏移，保险部453进入限位部432；当击发块49抵接切刀45时，击发块49带动切刀45朝远离钉仓架43的一侧偏移而使得推刀杆47复位，同时，刚性件脱离凸台471，保险部453脱离限位部432。
下面，详细介绍本实施方式的钉仓组件40的工作原理。
参见图10至图14，当钉仓组件40处于初次击发的初始状态时，击发块49及切刀45均位于钉仓组件40的近端，击发块49与切刀45不接触，弹片50位于第一凹口472内且弹片50保持初始状态。
参见图15至图19，当钉仓组件40进入闭合过程中时，推刀杆47带动切刀45向钉仓组件40的远端运动，弹片50的抵持端501抵持推刀杆47的凸台471，弹片50作用推刀杆47的远端朝钉仓架43一侧偏移，从而使得切刀45上的凸部453进入凹槽432，钉仓组件40进入保险状态，此时，切刀45的第二抵持部454的远端开始接触击发块49第一抵持部491的导向部4911，弹片50保持初始状态。
参见图20至图24，当钉仓组件40继续闭合时，推刀杆47继续带动切刀45向钉仓组件40的远端运动，击发块49保持不动，第二抵持部454通过导向部4911爬坡至第一抵持部491上方，此时切刀45上移而使得凸部453脱离凹槽432，钉仓组件40解除保险，同时，凸台471越过弹片50，连接切刀45的推刀杆47复位，推刀杆47凸台471挤压弹片50而使得弹片50朝远离凸台471的一侧变形。
参见图25至图29，当钉仓组件40进入完全闭合过程中时，推刀杆47带动切刀45及击发块49一起向钉仓组件40远端运动直至钉仓组件40完全闭合，弹片50脱离凸台471而进入第二凹口473，弹片50恢复初始状态，而后推刀杆47带动切刀45及击发块49进行切割缝合操作。
参见图30至图34，当钉仓组件40二次进入闭合过程中时，推刀杆47带动切刀45向钉仓组件40的远端运动，弹片50的抵持端501抵持推刀杆47的凸台471，弹片50作用推刀杆47的远端朝钉仓架43一侧偏移，从而使得切刀45上的凸部453进入凹槽432，此时，击发块49位于钉仓组件40的远端，切刀45无法上移，凸部453无法脱离凹槽432，钉仓组件40保持在保险状态，从而防止二次击发。
参见图35至图65，为本发明第二实施方式的钉仓组件40a的示意图。
为了便于说明，第二实施方式与第一实施方式中类似的部件采用相同的名称，并以不同的编号以示区别。
在本实施方式中，参见图35至图37，驱动机构50为位于钉仓组件40a近端且连接钉仓架43a及钉砧42a的压簧50a，压簧50a作用于钉仓41与钉砧42的近端，使得第一钳口与第二钳口在初始状态时张开。当推刀杆47a带动切刀45a向钉仓组件40a的远端移动至限位部(包括钉仓架43a外表面的容纳槽432a及容纳槽432a远端的凹陷部433a，参见下方详细说明)处时，压簧50a驱动钉仓架43a朝靠近保险部(包括切刀45a的第一端部451a及位于第一端部451a远端的突出部453a，参见下方详细说明)的一侧偏移而使得保险部进入限位部。
击发块49a的近端设有第一接触部491a，切刀45a的远端设有第二接触部454a，当第一接触部491a与第二接触部454a相互抵持时，击发块49a带动切刀45a朝远离钉仓架43a的一侧偏移而使得保险部453a脱离限位部432a。
第一接触部491a及第二接触部454a的至少其中之一上设有导引部，这里，以第一接触部491a近端的弧面4911a作为导引部4911a，当切刀45a相对击发块49a向钉仓组件40a远端运动时，击发块49a通过导引部4911a顺利将切刀45a下压，从而使得保险部下移而脱离限位部。
在本实施方式中，限位部包括位于钉仓架43a外表面的容纳槽432a，保险部包括切刀45a的第一端部451a，第一端部451a位于钉仓架43a外表面处，当切刀45a移动至容纳槽432a处时，压簧50a作用钉仓架43a而使得第一端部451a进入容纳槽432a，当击发块49a抵接切刀45a 时，击发块49a带动第一端部451a朝远离钉仓架43a的一侧偏移而使得第一端部451a脱离容纳槽432a。
限位部还包括位于容纳槽432a远端的凹陷部433a，保险部还包括位于第一端部451a远端的突出部453a，当第一端部451a位于容纳槽432a内且切刀45a继续向钉仓组件40a的远端运动时，突出部453a与凹陷部433a相互卡接以保证保险效果。
这里，限位部包括对称分布于容纳槽432a远端的两个凹陷部433a，保险部包括对称分布于第一端部451a远端的两个突出部453a。
在本实施方式中，驱动机构50包括位于切刀45a一侧的压簧50a，钉仓架43a上设有容纳压簧50a的容腔60a，当然，驱动机构50可以包括对称分布于切刀45a两侧的两个压簧50a。
下面，详细介绍本实施方式的钉仓组件40a的工作原理。
参见图38至图44，当钉仓组件40a处于初次击发的初始状态时，击发块49a及切刀45a均位于钉仓组件40a的近端，击发块49a与切刀45a不接触，切刀45a的第一端部451a位于钉仓架43a外表面且位于容纳槽432a的近端。
参见图45至图51，当钉仓组件40a进入闭合过程中时，推刀杆47a带动切刀45a向钉仓组件40a的远端运动，当切刀45a的第一端部451a运动至容纳槽432a处时，由于压簧50a始终驱使钉仓组件40a远端的张角张至最大，此时，压簧50a驱动钉仓架43a远离钉砧42a运动，第一端部451a正好落入容纳槽432a中，钉仓组件40a进入保险状态，切刀45a的第二接触部454a的远端开始接触击发块49a的第一接触部491a的导引部4911a，当切刀45a继续向钉仓组件40a远端运动时，击发块49a保持不动，击发块49a通过第一接触部491a及第二接触部454a的相互作用挤压切刀45a而使得第一端部451a下移，从而第一端部451a脱离容纳槽432a，钉仓组件40a解除保险。
参见图52至图58，当钉仓组件40a进入完全闭合过程中时，推刀杆47a带动切刀45a及击发块49a一起向钉仓组件40a远端运动直至钉仓组件40a完全闭合，而后推刀杆47a带动切刀45a及击发块49a进行切割缝合操作。
同样地，当“击发块49与切刀45之间的间距较小”时，即首次闭合时，由于击发块49作用于切刀45，使得保险部453无法进入限位部432，钉仓组件40进入保险状态，吻合器可以击发；当击发完成，击发块49留在钉仓41的远端时，由于没有击发块49对切刀45的抵持力，使得保险部453无法脱离限位部432而实现保险状态。
参见图59至图65，当钉仓组件40a二次进入闭合过程中时，推刀杆47a带动切刀45a向钉仓组件40a的远端运动，当切刀45a的第一端部451a运动至容纳槽432a处时，由于压簧50a始终驱使钉仓组件40a远端的张角张至最大，此时，压簧50a驱动钉仓架43a远离钉砧42a运动，第一端部451a正好落入容纳槽432a中，此时，击发块49a位于钉仓组件40a的远端，切刀45a无法下移，第一端部451a无法脱离容纳槽432a，钉仓组件40保持在保险状态，从而防止二次击发，这里，当切刀45a继续向钉仓组件40a远端运动时，突出部453a与凹陷部433a相互卡接，使得切刀45a与钉仓架43a配合更加稳固，保险更加牢靠。需要说明的是，上述两个实施方式仅是本发明钉仓组件40的举例说明，两个实施方式也可进行组合、置换等操作而形成新的实施方式，例如，第一实施方式中也可包含压簧以控制钉仓组件40远端的张角。
应当理解，虽然本说明书按照实施方式加以描述，但并非每个实施方式仅包含一个独立的技术方案，说明书的这种叙述方式仅仅是为清楚起见，本领域技术人员应当将说明书作为一个整体，各实施方式中的技术方案也可以经适当组合，形成本领域技术人员可以理解的其他实施方式。
上文所列出的一系列的详细说明仅仅是针对本发明的可行性实施方式的具体说明，它们并非用以限制本发明的保护范围，凡未脱离本发明技艺精神所作的等效实施方式或变更均应包含在本发明的保护范围之内。

Claims (20)

  1. 一种钉仓组件，其特征在于，包括：
    钉仓连接件，其包括壳体及位于所述壳体内的推刀杆；
    位于所述钉仓连接件远端且可打开/闭合的第一钳夹及第二钳夹；
    击发块，可移动地设置于所述第一钳夹或第二钳夹内；
    切刀，位于所述推刀杆的远端，且所述切刀在所述推刀杆的作用下可推动所述击发块移动；
    驱动机构；
    其中，所述第一钳夹的近端设有限位部，所述切刀设有保险部，当所述击发块位于所述钉仓组件的近端时，所述推刀杆带动所述切刀及所述击发块一起向所述钉仓组件的远端移动，当所述击发块位于所述钉仓组件的远端时，所述驱动机构驱动所述切刀及所述第一钳夹相对运动，所述限位部与所述保险部相互抵持而限制所述切刀继续向所述钉仓组件的远端运动。
  2. 根据权利要求1所述的钉仓组件，其特征在于，当所述击发块位于所述钉仓组件的近端且所述切刀未接触所述击发块时，所述驱动机构驱动所述切刀及所述第一钳夹相对运动，所述保险部进入所述限位部，而后当所述推刀杆带动所述切刀继续向所述钉仓组件的远端移动时，所述击发块抵接并带动所述切刀朝远离所述第一钳夹的一侧偏移，所述保险部脱离所述限位部。
  3. 根据权利要求1所述的钉仓组件，其特征在于，所述第一钳夹为相连的钉仓架及钉仓，所述第二钳夹为钉砧，所述限位部位于所述钉仓架。
  4. 根据权利要求3所述的钉仓组件，其特征在于，所述驱动机构为连接所述壳体的驱动件，所述推刀杆靠近所述驱动件的一侧设有凸台，当所述凸台向所述钉仓组件的远端移动至所述驱动件处时，所述驱动件驱动所述推刀杆朝远离所述驱动件的一侧偏移，从而所述切刀朝靠近所述钉仓架的一侧偏移而使得所述保险部进入所述限位部。
  5. 根据权利要求4所述的钉仓组件，其特征在于，所述击发块的近端设有第一抵持部，所述切刀的远端设有第二抵持部，当所述第一抵持部与所述第二抵持部相互抵持时，所述击发块带动所述切刀朝远离所述钉仓架的一侧偏移而使得所述保险部脱离所述限位部。
  6. 根据权利要求5所述的钉仓组件，其特征在于，所述第一抵持部及所述第二抵持部的至少其中之一上设有导向部。
  7. 根据权利要求4所述的钉仓组件，其特征在于，所述保险部及所述限位部的其中之一为凸部，其中另一为凹槽。
  8. 根据权利要求4所述的钉仓组件，其特征在于，所述保险部为凸部，所述凸部的近端包括第一斜面，所述限位部为凹槽，所述凹槽的近端包括第二斜面，所述第一斜面与所述第二斜面的斜率相同。
  9. 根据权利要求8所述的钉仓组件，其特征在于，所述凸部的远端包括第一平面，所述凹槽的远端包括第二平面，当所述凸部位于所述凹槽的最远端时，所述第一平面与所述第二平面相互干涉以限制所述凸部脱离所述凹槽。
  10. 根据权利要求4所述的钉仓组件，其特征在于，所述驱动件为弹片，当所述凸台向所述钉仓组件的远端移动至所述弹片处时，所述弹片驱动所述推刀杆朝远离所述弹片的一侧偏移，当所述击发块抵接所述切刀时，所述击发块带动所述切刀朝远离所述钉仓架的一侧偏移而使得所述推刀杆复位，所述凸台驱动所述弹片朝远离所述凸台的一侧变形。
  11. 根据权利要求10所述的钉仓组件，其特征在于，所述推刀杆于所述凸台的两侧设有凹口，当所述弹片脱离所述凸台时，所述弹片进入所述凹口且所述弹片保持初始状态。
  12. 根据权利要求10所述的钉仓组件，其特征在于，所述弹片为U型弹片。
  13. 根据权利要求3所述的钉仓组件，其特征在于，所述驱动机构为位于所述钉仓组件近端且连接所述钉仓架及所述钉砧的压簧，当所述推刀杆带动所述切刀向所述钉仓组件的远端移动至 所述限位部处时，所述压簧驱动所述钉仓架朝靠近所述保险部的一侧偏移而使得所述保险部进入所述限位部。
  14. 根据权利要求13所述的钉仓组件，其特征在于，所述击发块的近端设有第一接触部，所述切刀的远端设有第二接触部，当所述第一接触部与所述第二接触部相互抵持时，所述击发块带动所述切刀朝远离所述钉仓架的一侧偏移而使得所述保险部脱离所述限位部。
  15. 根据权利要求14所述的钉仓组件，其特征在于，所述第一接触部及所述第二接触部的至少其中之一上设有导引部。
  16. 根据权利要求13所述的钉仓组件，其特征在于，所述限位部包括位于所述钉仓架外表面的容纳槽，所述保险部包括所述切刀的第一端部，所述第一端部位于钉仓架外表面处，当所述切刀移动至所述容纳槽处时，所述压簧作用所述钉仓架而使得所述第一端部进入所述容纳槽，当所述击发块抵接所述切刀时，所述击发块带动所述第一端部朝远离所述钉仓架的一侧偏移而使得所述第一端部脱离所述容纳槽。
  17. 根据权利要求16所述的钉仓组件，其特征在于，所述限位部还包括位于所述容纳槽远端的凹陷部，所述保险部还包括位于所述第一端部远端的突出部，当所述第一端部位于所述容纳槽内且所述切刀继续向所述钉仓组件的远端运动时，所述突出部与所述凹陷部相互卡接。
  18. 根据权利要求17所述的钉仓组件，其特征在于，所述限位部包括对称分布于所述容纳槽远端的两个凹陷部，所述保险部包括对称分布于所述第一端部远端的两个突出部。
  19. 根据权利要求13所述的钉仓组件，其特征在于，所述驱动机构包括对称分布于所述切刀两侧的两个压簧。
  20. 一种医用吻合器，其特征在于包括如权利要求1-19中任意一项所述的钉仓组件。
PCT/CN2018/115821 2017-12-14 2018-11-16 钉仓组件及使用该钉仓组件的医用吻合器 WO2019114495A1 (zh)

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