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WO2016107586A1 - 一种钉头组件以及腔镜外科手术缝切装置 - Google Patents

一种钉头组件以及腔镜外科手术缝切装置 Download PDF

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Publication number
WO2016107586A1
WO2016107586A1 PCT/CN2015/099941 CN2015099941W WO2016107586A1 WO 2016107586 A1 WO2016107586 A1 WO 2016107586A1 CN 2015099941 W CN2015099941 W CN 2015099941W WO 2016107586 A1 WO2016107586 A1 WO 2016107586A1
Authority
WO
WIPO (PCT)
Prior art keywords
block
head assembly
nail head
connecting tube
pusher bar
Prior art date
Application number
PCT/CN2015/099941
Other languages
English (en)
French (fr)
Inventor
陈望东
裴永旺
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 CN201410842178.0A external-priority patent/CN105796143B/zh
Priority claimed from CN201420858637.XU external-priority patent/CN204364050U/zh
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 US15/541,044 priority Critical patent/US10806453B2/en
Priority to EP15875262.6A priority patent/EP3241505B1/en
Priority to JP2017600081U priority patent/JP3214069U/ja
Priority to ES15875262T priority patent/ES2971142T3/es
Priority to BR112017014210-4A priority patent/BR112017014210B1/pt
Publication of WO2016107586A1 publication Critical patent/WO2016107586A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/068—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
    • A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0469—Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery
    • 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
    • A61B17/320016—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes
    • 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
    • A61B2017/07271—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
    • A61B2090/034—Abutting means, stops, e.g. abutting on tissue or skin abutting on parts of the device itself
    • 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
    • A61B2090/038—Automatic limiting or abutting means, e.g. for safety during shipment
    • 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
    • A61B2090/0801—Prevention of accidental cutting or pricking

Definitions

  • the present invention relates to the field of medical devices, and in particular to a nail head assembly having a safety mechanism for preventing false alarms and a lenticular surgical slitting device having the nail head assembly.
  • the slitting device is widely used for wound suturing, internal tissue suturing and cutting in surgery. Since the development of surgery, it has become more and more inclined to minimally invasive surgery. Broadly speaking, surgery that reduces trauma is called minimally invasive surgery; in a narrow sense, minimally invasive surgery refers to surgery performed under endoscopy. Endoscopic surgery generally requires only a few small holes in the patient's body to remove the resected, sutured tissue and auxiliary instruments from the small hole into the patient for surgery. Minimally invasive surgery brings little trauma to the patient, and the patient can recover in a short period of time, so minimally invasive surgery is increasingly favored by people.
  • a linear slitting device for laparoscopic surgery for minimally invasive surgery includes a device body, and the instrument body includes a housing and a firing handle pivotally disposed on the housing, wherein the housing is provided with a firing handle A relatively movable firing bar that urges the nail head assembly at the front end of the housing for stitching and cutting.
  • the nail head assembly includes a staple cartridge holder and an anvil pivotally coupled to the staple cartridge holder.
  • the staple cartridge frame is detachably provided with a staple cartridge.
  • the nail head assembly further includes a pusher bar movably disposed in the socket of the nail head assembly and coupled to the firing rod, the distal end of the pusher bar fixing all the blades, and the cutter is in the process of advancement
  • the middle stapler and the anvil are closed, the tissue between the staple cartridge and the anvil is cut off, and the firing block is driven to push the pusher pieces out of the staple cartridge in turn, and then the pusher pushes the staples out of the staple cartridge and sets In the organization.
  • the cartridge assembly needs to be installed to the instrument platform of the endoscopic surgical suture device, that is, the body can be operated.
  • the pusher bar may be tilted during assembly, packaging, and transportation, so that the pusher bar pushes the cutter to move, causing the instrument to be accidentally struck, and Displacement of the pusher bar can also result in the instrument platform not being properly installed with the pusher bar, rendering the instrument inoperable.
  • the invention provides a nail head assembly and a lenticular surgical suture cutting device, which can effectively prevent the ejector rod from being swayed in the assembly, packaging and transportation, and prevent the accidental firing of the instrument.
  • a nail head assembly comprising: a staple cartridge holder detachably provided with a staple cartridge; an anvil pivotally closed relative to the staple cartridge; a firing block movable Positioned in the staple cartridge; a connecting tube having a distal end connected to the proximal end of the cartridge holder; a pusher bar movably disposed in the connecting tube, the distal end of the pusher bar being cut a knife that pushes the firing block to move under the push of the pusher bar; and a safety mechanism, the connection
  • the connecting tube, the securing mechanism includes: a pressing block for locking a proximal end of the pusher bar to prevent the pusher bar from moving before use of the nail head assembly, the press block being opposite to the The connecting tube rotates between the first position and the second position; and a pushing block for pushing the pressing block to rotate from the first position to the second position, the push block being located at one of the pressing blocks
  • the side is movable between the third position and
  • the proximal end of the pusher bar is provided with a first latching portion
  • the pressing block is provided with a second latching portion.
  • the pressing block When the pressing block is located at the first position, the The second latching portion is engaged with the first latching portion, the pusher bar is in a locked state and cannot move; when the pressing block is rotated to the second position, the second latching portion is The first click portion is disengaged, and the pusher bar is in an unlocked state and can be moved longitudinally.
  • the pushing block is disposed on an outer circumference of the connecting pipe, and when the pushing block is moved from the third position to the fourth position, pushing the pressing block by the first The position is rotated to the second position.
  • the side wall of the connecting pipe is provided with a first limiting slot extending along a longitudinal direction thereof, and the pressing block is connected to the first limiting slot through a pin shaft, and the pressing block can be Rotating relative to the connecting tube about the pin.
  • the proximal end of the pressing block is connected to the connecting tube through the pin shaft, and the second latching portion is disposed at a distal end of the pressing block.
  • the connecting tube is further provided with a second limiting slot extending along a longitudinal direction thereof, the second limiting slot is located at one side of the first limiting slot, and the first limiting The bit slots are in communication, and the push block is disposed in the second limiting slot and movable along the second limiting slot between the third position and the fourth position.
  • the securing mechanism further includes: a torsion spring connecting the pressing block and the connecting tube, driving the pressing block to rotate from the second position to the first position; and a spring, connecting The push block and the connecting tube drive the push block to move from the fourth position toward the third position.
  • the proximal end of the spring is coupled to the distal end of the push block, and the distal end of the spring is coupled to the connecting tube.
  • one end of the torsion spring is connected to the pressing block, and the other end is connected to an inner wall of the connecting pipe.
  • the outer surface of the push block is provided with a first guiding portion
  • the second guiding portion is disposed on the side wall of the distal end of the pressing block near the pushing block
  • the second a guiding portion is disposed on an outer surface of the push block, and when the push block is moved from the third position to the fourth position, the first guiding portion pushes the second guiding portion to cause the pressing block Rotating from the first position to the second position.
  • the first guiding portion is a first inclined surface, and the first inclined surface faces the distal end of the pushing block and is inclined upward from the distal end toward the proximal end.
  • the second guiding portion is a protrusion protruding from a sidewall of the distal end of the pressing block.
  • the proximal end of the pusher bar is further provided with a third guiding portion, and the third guiding portion guides the pressing block when the pushing bar moves toward the proximal end of the connecting pipe Rotating from the first position to the second position.
  • the third guiding portion is a second inclined surface, the second inclined surface faces the proximal end of the pusher bar, and is inclined downward from the distal end toward the proximal end.
  • a laparoscopic surgical suture device includes: a body, The present invention also includes the above-described nail head assembly, the connecting tube of the nail head assembly and the pusher bar being coupled to the body.
  • the invention provides a nail head assembly and a lenticular surgical suture cutting device, which can effectively prevent the shank rod from being pushed in the assembly, packaging and transportation before the cartridge assembly is mounted to the instrument platform of the endoscope stapler.
  • the movement can effectively prevent the accidental firing of the device, and can ensure that the instrument platform can be correctly installed with the pusher bar before the operation.
  • Figure 1 is a perspective view of a nail head assembly of the present invention
  • Figure 2 is an exploded view of the nail head assembly of the present invention
  • Figure 3a is a perspective view of the nail head assembly of the present invention in a locked state
  • Figure 3b is a partial enlarged view of A in Figure 3a;
  • FIG. 4 is a schematic view showing the connection relationship between the pressing block and the pusher bar in the locked state of the nail head assembly of the present invention
  • Figure 5a is a perspective view of the nail head assembly of the present invention in an unlocked state
  • Figure 5b is a partial enlarged view of B in Figure 5a;
  • FIG. 6 is a schematic view showing the connection relationship between the pressing block and the pusher bar in the unlocked state of the nail head assembly of the present invention.
  • Both the proximal end and the distal end described in the present invention are referenced by the operator of the instrument, with one end near the operator being the proximal end and one end remote from the operator being the distal end.
  • the longitudinal direction in the present invention refers to the longitudinal direction of the member, generally from the distal end to the proximal end.
  • the description of the direction or position of the upper/upper, lower/lower, vertical, horizontal, etc. in the present invention is described by taking the drawings as an example, but changes may be made as needed, and the changes are included in the present invention.
  • the terms first, second, third, fourth, etc. are used for descriptive purposes only and are not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • a nail head assembly includes a staple cartridge holder, an anvil, a staple cartridge, a firing block, a connecting tube, a pusher bar, a cutter, and a safety mechanism.
  • the staple cartridge holder is detachably provided with a staple cartridge; the anvil is pivotally closed relative to the staple cartridge; the firing block is movably disposed in the staple cartridge; and the distal end of the connection tube is coupled to the proximal end of the cartridge holder;
  • a pusher bar is movably disposed in the connecting tube, a proximal end of the pusher bar is provided with a first latching portion, and a distal end of the pusher bar is provided with a cutter, and the cutter is in the push Pushing the firing block to move under the pushing of the knife bar; and a safety mechanism connecting the connecting pipe, the safety mechanism comprising: a pressing block, the pressing block is provided with a second clamping portion, and the pressing block can be Rotating between the first position and the second
  • the nail head assembly comprises: a magazine holder 1, an anvil 2, a staple cartridge 3, a firing block (not shown), a connecting tube 5, a pusher bar 6, a cutter 7, and a safety mechanism .
  • the anvil 2 is attached above the staple cartridge holder 1, preferably the proximal end of the anvil 2 is pivotally coupled to the proximal end of the cartridge holder 1.
  • the staple cartridge 3 is disposed between the staple cartridge holder 1 and the anvil 2, and is detachably coupled to the staple cartridge holder 1.
  • the staple cartridge 2 is provided with a nailing hole for accommodating a pusher piece and a staple, and is generally 4 rows or 6 rows of nail holes.
  • the connecting pipe 5 includes an upper support member 51, a lower support member 52, and a sleeve 53 that is sleeved on the outside of the upper support member 51 and the lower support member 52.
  • the first end of the connecting tube 5 is provided with a first limiting slot 54 and a second limiting slot 55.
  • the first stop groove 54 is disposed on the side wall of the proximal end of the upper support member 51.
  • the second limiting slot 55 is disposed at a proximal end of the joint of the upper support member 51 and the lower support member 52.
  • the second limiting slot 55 is disposed along the longitudinal direction of the connecting tube 5, and the second limiting slot 55 is located at the first limiting slot 54.
  • One side is in communication with the first limiting slot 54.
  • the pusher bar 6 is movably disposed in the connecting pipe 5. Specifically, the pusher bar 6 is disposed between the upper link 51 and the lower link 52. A first latching portion 63 is protruded from the top of the proximal end 61 of the pusher bar 6, and the distal end 62 of the pusher bar 6 is connected to the proximal end 71 of the cutter 7. The distal end 72 of the cutter 7 is also provided with a blade 73.
  • the blade 73 can cut off the tissue between the anvil 2 and the staple cartridge 3, while the cutter 7 can push the firing block to move, thereby The pusher pieces are sequentially pushed out of the staple cartridge 3, and the staples are pushed out of the staple cartridge 3 and bound to the tissue.
  • the longitudinal section of the cutter 7 is in the shape of an I-shape, and the I-shaped cutter 7 can move the anvil 2 toward the staple cartridge 3 during the process in which the pusher bar 6 pushes the cutter 7 to the distal end. closure.
  • the securing mechanism is coupled to the proximal end of the connecting tube 5, and the securing mechanism includes a pressing block 81, a push block 82, a torsion spring 83, and a spring 84.
  • the pressing block 81 is provided with a second latching portion 811, and the pressing block 81 is rotatable relative to the connecting tube 5 between the first position and the second position when the pressing block 81 is in the first position (the pressing block in FIG. 4)
  • the position of 81 is the first position
  • the second latching portion 811 on the pressing block 81 is engaged with the first latching portion 63 on the pusher bar 6, so that the pusher bar 6 cannot be moved and is in a locked state.
  • the pressing block 81 is rotated to the second position (the position of the pressing block 81 in FIG. 6 is the second position)
  • the second latching portion 811 is disengaged from the first latching portion 63, and the pusher bar 6 is movable and unlocked. status.
  • the rotation of the pressing block 81 from the first position to the second position corresponds to the counterclockwise rotation of the pressing block 81 from the position shown in FIG.
  • the pressure block 81 is coupled to the first limit groove 54 by a pin 9, and the proximal end of the pressure block 81 is rotatable relative to the connecting tube 5 about the pin shaft 9.
  • the second latching portion 811 is disposed at a distal end of the pressing block 81.
  • the push block 82 is disposed on the outer circumference of the connecting pipe 5 at one side of the pressing block 81, and is movable relative to the connecting pipe 5 in the longitudinal direction thereof between the third position and the fourth position, when the pushing block 82 is moved by the third position In the fourth position, the push block is rotated from the first position to the second position.
  • the push block 82 is disposed in the second limiting slot 55 and is movable between the third position and the fourth position along the second limiting slot 55.
  • the push block 82 in FIG. 3b The position is the third position.
  • the pressing block 81 cooperates with the distal end of the push block 82, and the second latching portion 811 on the pressing block 81 and the first latching portion 63 on the pusher bar 6 are stuck.
  • the position of the push block 82 in FIG. 5b is the fourth position.
  • the press block 81 cooperates with the proximal end of the push block 82, and the second latch portion 811 and the pusher bar 6 on the press block 81
  • the upper first snap portion 63 is disengaged; the third position is at the proximal end of the fourth position.
  • the torsion spring 83 connects the pressing block 81 and the connecting pipe 5 through the pin 9, and the driving pressing block 81 is rotated from the second position to the first position.
  • one end of the torsion spring 83 is connected to the pressing block 81, and the other end is connected to the inner wall of the upper supporting member 51.
  • the spring 84 connects the push block 82 and the connecting tube 5, and the driving push block 82 is moved from the fourth position toward the third position. As shown in Figure 3b, the proximal end of the spring 84 is coupled to the distal end of the push block 82 and the distal end of the spring 84 is coupled to the sidewall of the upper support member 51.
  • the resilient member can be varied.
  • the resilient member can be a spring block disposed between the push block 82 and the sidewall of the upper support member 51. I will not repeat them here.
  • a second guiding portion 812 is disposed on a side wall of the pressing block 81 near the pushing block 82 side.
  • the second guiding portion 812 is attached to the outer surface of the pushing block 82.
  • the second guiding portion 812 is preferably a protruding portion.
  • the outer surface of the push block 82 is provided with a first guiding portion 821.
  • the first guiding portion 821 is used to push the second guiding portion 812 to make the pressing block 81
  • the first guiding portion 821 is a first inclined surface, and the first inclined surface is inclined from the distal end of the pushing block 82 toward the proximal end, as shown in FIG. 3b, the first inclined surface is located near the convex portion. End side.
  • FIG. 5a, FIG. 5b and FIG. 6 together, which respectively show a perspective view of the nail head assembly in an unlocked state and a schematic diagram of a connection relationship between the pressure block and the pusher bar. 5a and 5b, in order to more clearly show the structure of the safety mechanism, the connecting pipe 5 is omitted.
  • the push block 82 is forced to push toward its distal end, and the second guide portion 812 (bump) of the press block 81 is pushed along the push block.
  • the first guiding portion 821 (first inclined surface) of the 82 is moved, and since the first inclined surface is inclined from the distal end toward the proximal end, the bump is lifted during the movement of the push block 82 from the third position to the fourth position. Accordingly, the second latch portion 811 located at the distal end of the pressing block 81 is also lifted, and the pressing block 81 is rotated about the pin shaft 9 from the first position to the second position (ie, rotated from the position shown in FIG. 4 to the figure). 6 position)). As shown in FIG.
  • the second latching portion 811 of the pressing block 81 is disengaged from the first latching portion 63 of the pusher bar 6, and the pusher bar 6 is in an unlocked state, which can be driven by the firing assembly. Remote movement.
  • the push block 82 loses the external force, and the push block 82 is moved back to the third position by the action of the spring 84, and at the same time, the pressure is pressed.
  • the block 81 moves from the proximal end of the push block 82 to its distal end, and the pressure block 81 is rotated back to the first position by the torsion spring 83.
  • the proximal end 61 of the pusher bar 6 can also be provided with a third guide 64, when the pusher bar When the 6 is moved toward the proximal end, the third guiding portion 64 can guide the pressing block 81 to rotate from the first position to the second position.
  • the third guiding portion 64 is a second inclined surface (as shown in FIG. 4 or FIG. 6). The second bevel faces the proximal end 61 of the pusher bar 6 and is inclined downwardly from the distal end toward the proximal end.
  • the second latching portion 811 of the pressing block 81 can be moved along the second inclined surface to rotate the pressing block from the first position to the second position.
  • the pressing block 81 is again rotated to the first position by the torsion spring 83, and the second latching portion 811 is re-engaged with the first latching portion 63 of the pusher bar 6 to return the pusher bar 6 to the locked state.
  • the second bevel can facilitate the resetting of the pusher bar 6. It is understood by those skilled in the art that the third guiding portion 64 is not necessary.
  • the pusher bar 6 can also be rotated to the fourth position by pushing the push block 82, and then the pusher bar 6 is pulled. Reset. I will not repeat them here.
  • the tamper-proof and anti-scratch-proof structure of the present embodiment can only release the pusher bar 6 to be unlocked by driving the push block 8 to move longitudinally by applying an external force to the push block 8 to release the pusher bar 6 in an unlocked state;
  • an external force is applied to the push block 8
  • the second latch portion at the distal end of the press block 81 is engaged with the first latch portion of the pusher bar 6, so that the pusher bar 6 is in a locked state, thereby preventing the pusher bar 6 swaying and false hitting.
  • the invention also provides a laparoscopic surgical suture cutting device.
  • the seam cutting device includes a body and a nail head assembly.
  • the nail head assembly is the nail head assembly shown in FIGS. 1 to 6.
  • the connecting tube 5 of the nail head assembly and the pusher bar 6 are connected to the body.
  • the body can push the pusher bar 6 to move the cutter 7 toward the distal end of the cartridge holder 1.
  • the nail head assembly and the endoscopic surgical slitting device provided by the present invention can effectively prevent the cartridge assembly from being mounted to the endoscope stapler. Pushing the arbor in the assembly, packaging and transportation of the instrument platform to ensure that the instrument platform can be correctly installed with the ejector before the operation, and can prevent accidental firing.

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  • Engineering & Computer Science (AREA)
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  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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Abstract

一种钉头组件以及腔镜外科手术缝切装置，钉头组件包括设有钉仓（3）的钉仓架（1）、钉砧（2）、移动设置于钉仓（3）内的击发块、连接于钉仓架（1）的连接管（5）、移动设置于连接管（5）内的推刀杆（6）以及保险机构。推刀杆（6）近端设有第一卡挚部（63），远端设有切刀（7），能够推动击发块移动。保险机构包括：设有第二卡挚部（811）的压块（81）和推块（82），压块（81）可相对连接管（5）于第一位置与第二位置之间转动，使推刀杆（6）处于锁定状态和解锁状态，推块（82）可相对连接管（5）沿其纵向于第三位置与第四位置之间移动，当推块（82）由第三位置移动至第四位置时，推动压块（81）由第一位置转动至第二位置。腔镜外科手术缝切装置包括该钉头组件和本体。该钉头组件以及腔镜外科手术缝切装置可以防止钉仓组件安装前推刀杆（6）发生蹿动，防止误击发，且可确保推刀杆（6）被正确安装。

Description

一种钉头组件以及腔镜外科手术缝切装置 技术领域
本发明涉及医疗器械领域，具体地，涉及一种具有防误击发的保险机构的钉头组件以及具有该钉头组件的腔镜外科手术缝切装置。
背景技术
缝切装置被广泛用于外科手术中的伤口缝合、内部组织缝合与切割。外科手术发展至今，已经越来越倾向于微创手术。广义来讲，能够减少创伤的手术都称为微创手术；狭义来讲，微创手术是指在内窥镜下进行的手术。内窥镜下的手术一般只需要在病人的身体上开几个小孔，将切除、缝合组织及辅助的器械从小孔中深入病人体内进行手术。微创手术给病人带来的创伤小，病人可以在很短的时间内恢复，因此微创手术越来越受到人们的青睐。
现有技术中用于微创手术的腔镜外科手术用直线缝切装置，包括一器械本体，所述器械本体包括壳体及一枢轴设于壳体上的击发把手，该壳体内设有一个可相对移动的击发杆，所述击发杆能推动位于壳体前端的钉头组件进行缝合和切除。具体的，所述钉头组件包括一钉仓架，及一与钉仓架枢轴连接的钉砧。所述钉仓架上可拆卸地设有钉仓。所述钉头组件还包括一个可移动地设置在钉头组件的接管内的、与击发杆配接的推刀杆，所述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，进而推钉片将吻合钉推出于钉仓外并订合在组织上。
现有技术中，钉仓组件需要安装至腔镜外科手术用缝切装置的器械平台即本体后才能进行手术。但是由于钉仓组件安装至腔镜吻合器的器械平台之前，在组装、包装和运输等环节中推刀杆可能会发生蹿动，从而推刀杆推动切刀移动，导致器械的误击发，而且推刀杆发生移位，也会导致器械平台不能与推刀杆正确安装，致使器械无法正常使用。
发明内容
本发明提供一种钉头组件以及腔镜外科手术缝切装置，可以有效防止推刀杆在组装、包装和运输等环节中出现蹿动，并防止器械的误击发。
根据本发明的一个方面，提供一种钉头组件，所述钉头组件包括：钉仓架，可拆卸地设有钉仓；钉砧，可相对于钉仓枢转闭合；击发块，可移动地设置于所述钉仓内；连接管，其远端连接所述钉仓架的近端；推刀杆，可移动地设置于所述连接管内，所述推刀杆的远端设有切刀，所述切刀在所述推刀杆的推动下推动所述击发块移动；以及保险机构，连接 所述连接管，所述保险机构包括：压块，用于锁定所述推刀杆的近端，防止所述推刀杆在所述钉头组件使用前移动，所述压块可以相对所述连接管于第一位置与第二位置之间转动；和推块，用于推动所述压块由所述第一位置向所述第二位置转动，所述推块位于所述压块的一侧，且可相对所述连接管沿其纵向于第三位置与第四位置之间移动。
本发明实施例中，所述推刀杆的近端设有第一卡挚部，所述压块上设有第二卡挚部，当所述压块位于所述第一位置时，所述第二卡挚部与所述第一卡挚部卡接，所述推刀杆处于锁定状态无法移动；当所述压块转动至所述第二位置时，所述第二卡挚部与所述第一卡挚部脱离，所述推刀杆处于解锁状态，可纵向移动。
本发明实施例中，所述推块设置于所述连接管的外周上，当所述推块由所述第三位置移动至所述第四位置时，推动所述压块由所述第一位置转动至所述第二位置。
本发明实施例中，所述连接管的侧壁上设有沿其纵向延伸的第一限位槽，所述压块通过销轴连接于所述第一限位槽内，所述压块可绕所述销轴相对所述连接管转动。
本发明实施例中，所述压块的近端通过所述销轴与所述连接管连接，所述第二卡挚部设置于所述压块的远端。
本发明实施例中，所述连接管还设有沿其纵向延伸的第二限位槽，所述第二限位槽位于所述第一限位槽的一侧，且与所述第一限位槽相连通，所述推块设置于所述第二限位槽内，且可沿所述第二限位槽于所述第三位置与第四位置之间移动。
本发明实施例中，所述保险机构还包括：扭簧，连接所述压块和所述连接管，驱动所述压块由所述第二位置向所述第一位置转动；以及弹簧，连接所述推块和所述连接管，驱动所述推块由所述第四位置向所述第三位置方向移动。
本发明实施例中，所述弹簧的近端连接于所述推块的远端，所述弹簧的远端连接所述连接管。
本发明实施例中，所述扭簧的一端连接所述压块，另一端连接所述连接管的内壁。
本发明实施例中，所述推块上的外表面设有第一引导部，所述压块的远端靠近所述推块一侧的侧壁上设有第二引导部，所述第二引导部置于所述推块的外表面上，当所述推块由所述第三位置移动至所述第四位置时，所述第一引导部推动第二引导部，使所述压块由所述第一位置旋转至所述第二位置。
本发明实施例中，所述第一引导部为一第一斜面，所述第一斜面朝向所述推块的远端且自远端朝向近端上升式倾斜。
本发明实施例中，所述第二引导部为一凸设于所述压块的远端的侧壁上的凸块。
本发明实施例中，所述推刀杆的近端还设有第三引导部，当所述推刀杆向所述连接管的近端移动时，所述第三引导部引导所述压块由所述第一位置旋转至第二位置。
本发明实施例中，所述第三引导部为一第二斜面，所述第二斜面朝向所述推刀杆近端，且自远端朝向近端下降式倾斜。
根据本发明的另一个方面，还包括一种腔镜外科手术缝切装置，其包括：本体，其特 征在于，还包括上述钉头组件，所述钉头组件的连接管以及推刀杆与所述本体相连接。
本发明通过提供一种钉头组件以及腔镜外科手术缝切装置，可以有效地防止钉仓组件安装至腔镜吻合器的器械平台之前，在组装、包装和运输等环节中推刀杆发生蹿动，能有效防止器械的误击发，而且可以确保手术前器械平台能够与推刀杆正确安装。
附图说明
通过阅读参照以下附图对非限制性实施例所作的详细描述，本发明的其它特征、目的和优点将会变得更明显：
图1为本发明的钉头组件的立体图；
图2为本发明的钉头组件的分解图；
图3a为本发明的钉头组件锁定状态下的立体图；
图3b为图3a中A处的局部放大图；
图4为本发明的钉头组件锁定状态下的压块与推刀杆的连接关系示意图；
图5a为本发明的钉头组件解锁状态下的立体图；
图5b为图5a中B处的局部放大图；以及
图6为本发明的钉头组件解锁状态下的压块与推刀杆的连接关系示意图。
具体实施方式
本发明内所描述的近端和远端，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。本发明中的纵向是指部件长度方向，大致从远端到近端的方向。本发明中的上方/上、下方/下、竖直、水平等对方向或位置的描述是以附图为例进行的说明，但根据需要也可以做出改变，所做改变均包含在本发明保护范围内。此外，术语第一、第二、第三、第四等仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。
依据本发明主旨构思，钉头组件包括钉仓架、钉砧、钉仓、击发块、连接管、推刀杆、切刀以及保险机构。钉仓架可拆卸地设有钉仓；钉砧可相对于钉仓枢转闭合；击发块可移动地设置于所述钉仓内；连接管的远端连接所述钉仓架的近端；推刀杆可移动地设置于所述连接管内，所述推刀杆的近端设有第一卡挚部，所述推刀杆的远端设有切刀，所述切刀在所述推刀杆的推动下推动所述击发块移动；以及保险机构，连接所述连接管，所述保险机构包括：压块，所述压块上设有第二卡挚部，且所述压块可以相对所述连接管于第一位置与第二位置之间转动，当所述压块位于所述第一位置时，所述第二卡挚部与所述第一卡挚部卡接，所述推刀杆处于锁定状态无法移动，当所述压块转动至所述第二位置时，所述第二卡挚部与所述第一卡挚部脱离，所述推刀杆处于解锁状态，可纵向移动；和推块，设置于所述连接管近端的外周上，位于所述压块的一侧，且可相对所述连接管沿其纵向于第三位置与第四位置之间移动，当所述推块由所述第三位置移动至所述第四位置时，推动所 述压块由所述第一位置转动至第二位置。
下面结合附图和实施例对本发明的技术内容进行进一步地说明：
请一并参见图1至图4，其分别示出了本发明的钉头组件的立体图、分解图、锁定状态下的立体图以及锁定状态下的压块与推刀杆的连接关系示意图。其中，由于钉头组件的钉仓架、钉砧、钉仓和击发块不是本发明的创新部分，因此，为了更清楚地显示钉头组件的结构，除图1外，其余附图中均省略了钉头组件的钉仓架、钉砧、钉仓以及击发块。在本发明的优选实施例中，钉头组件包括：钉仓架1、钉砧2、钉仓3、击发块(未示出)、连接管5、推刀杆6、切刀7以及保险机构。
如图1所示，钉砧2连接于钉仓架1的上方，优选地，钉砧2的近端与钉仓架1的近端枢轴连接。钉仓3设置于钉仓架1与钉砧2之间，且可拆卸地连接钉仓架1。钉仓2内设容纳有推钉片和吻合钉的置钉孔，一般为4排或6排置钉孔。
连接管5的远端与钉仓架1的近端相连接。如图2所示，连接管5包括相互拼接的上支撑件51、下支撑件52以及套设于上支撑件51、下支撑件52外部的套管53。
连接管5的近端设有一第一限位槽54以及第二限位槽55。在图3a所示的优选实施中，第一限位槽54设置于上支撑件51近端的侧壁上。第二限位槽55设置于上支撑件51和下支撑件52拼接处的近端，第二限位槽55沿连接管5的纵向设置，第二限位槽55位于第一限位槽54的一侧，且与第一限位槽54相连通。
推刀杆6可移动地设置于连接管5内。具体地，推刀杆6设置于上连接件51与下连接件52之间。推刀杆6的近端61顶部凸设有一第一卡挚部63，推刀杆6的远端62连接切刀7的近端71。切刀7远端72还设有刀刃73。在所述推刀杆6推动切刀7往远端移动的过程中，刀刃73可以切断位于钉砧2和钉仓3之间的组织，与此同时，切刀7可以推动击发块移动，从而将推钉片依次推出钉仓3，进而将吻合钉推出钉仓3并订合于组织上。在本实施例中，切刀7的纵截面呈工字形，在所述推刀杆6推动切刀7往远端移动的过程中，工字形的切刀7可使钉砧2朝向钉仓3闭合。
保险机构连接于连接管5的近端，保险机构包括压块81、推块82、扭簧83以及弹簧84。
压块81上设有第二卡挚部811，且压块81可以相对连接管5于第一位置与第二位置之间转动，当压块81位于第一位置时(图4中的压块81所在位置即为第一位置)，压块81上的第二卡挚部811与推刀杆6上的第一卡挚部63卡接，使推刀杆6无法移动，处于锁定状态，当压块81转动至第二位置时(图6中的压块81所在位置即为第二位置)，第二卡挚部811与第一卡挚部63脱离，推刀杆6可移动，处于解锁状态。本实施例中，压块81由第一位置向第二位置的转动相当于压块81由图4所示位置进行逆时针的转动。如图3a和图3b所示，压块81通过销轴9连接于第一限位槽54内，压块81的近端可绕销轴9相对连接管5转动。第二卡挚部811设置于压块81的远端。
推块82设置于连接管5的外周上，位于压块81的一侧，且可相对连接管5沿其纵向于第三位置与第四位置之间移动，当推块82由第三位置移动至第四位置时，推动压块由第一位置转动至第二位置。如图3a和图3b所示，推块82设置于第二限位槽55内，且可沿第二限位槽55于第三位置与第四位置之间移动，图3b中的推块82所在位置即为第三位置，此时，压块81与推块82的远端相配合，且压块81上的第二卡挚部811与推刀杆6上的第一卡挚部63卡接；图5b中的推块82所在位置即为第四位置，此时，压块81与推块82的近端相配合，且压块81上的第二卡挚部811与推刀杆6上的第一卡挚部63脱离；第三位置位于第四位置的近端。
扭簧83通过销轴9连接压块81和连接管5，驱动压块81由第二位置向第一位置转动。在本实施例中，扭簧83的一端连接压块81，另一端连接上支撑件51的内壁。
弹簧84连接推块82和连接管5，驱动推块82由第四位置向第三位置方向移动。如图3b所示，弹簧84的近端连接于推块82的远端，弹簧84的远端连接上支撑件51的侧壁。本领域技术人员理解，在一些实施例中，弹性部件是可以进行变化的，例如，弹性部件可以是一设置于推块82与上支撑件51侧壁之间的弹块。在此不予赘述。
进一步地，请参见图3b，当本发明的钉头组件解锁前，压块81位于第一位置，推块82位于第三位置。压块81的远端靠近推块82一侧的侧壁上设有第二引导部812，第二引导部812贴于推块82的外表面上，第二引导部812优选地为一凸设于压块81的远端的侧壁上的凸块。所述凸块由压块81的侧面延伸而出，穿过第一限位槽54和第二限位槽55的连通处，贴于推块82的外表面上。推块82上的外表面设有第一引导部821，当推块82由第三位置移动至第四位置时，第一引导部821用于推动第二引导部812，使压块81由第一位置旋转至第二位置，第一引导部821为一第一斜面，第一斜面自推块82的远端朝向近端上升式倾斜，如图3b所示，第一斜面位于凸块的近端侧。
更进一步地，请一并参见图5a、图5b和图6，其分别示出了钉头组件解锁状态下的立体图以及压块与推刀杆的连接关系示意图。图5a、图5b为了更清楚地显示保险机构的结构，省略了连接管5。如图3b所示，当将钉头组件安装至缝切装置的平台上的过程中，推块82受力向其远端推动，压块81的第二引导部812(凸块)沿推块82的第一引导部821(第一斜面)移动，由于第一斜面自远端朝向近端上升式倾斜，因此，凸块在推块82从第三位置移动至第四位置的过程中被抬起，相应地，位于压块81远端的第二卡挚部811也被抬起，压块81绕销轴9从第一位置旋转至第二位置(即从图4所示位置旋转至图6所示位置)。如图6所示，此时，压块81的第二卡挚部811与推刀杆6的第一卡挚部63脱离，推刀杆6处于解锁状态，其可在击发组件的作用下向远端移动。当缝切装置击发完毕，将钉头组件自缝切装置的平台上拆下时，推块82失去外力作用，则推块82在弹簧84的作用下移回第三位置，与此同时，压块81自推块82的近端移动至其远端，且压块81在扭簧83的作用下，旋转回第一位置。
在本发明的优选实施例中，推刀杆6的近端61还可以设有第三引导部64，当推刀杆 6向近端移动时，第三引导部64可以引导压块81由第一位置旋转至第二位置。优选地，第三引导部64为一第二斜面(如图4或图6所示)。所述第二斜面朝向推刀杆6近端61，且自远端朝向近端下降式倾斜。当推刀杆6复位返回近端过程中，压块81的第二卡挚部811可以沿第二斜面移动，使压块由第一位置旋转至第二位置，当推刀杆6复位后，压块81在扭簧83的作用下再次旋转至第一位置，第二卡挚部811重新与推刀杆6的第一卡挚部63卡接，使推刀杆6重新恢复至锁定状态。第二斜面可以使推刀杆6的复位更方便。本领域技术人员理解，第三引导部64并不是必需的，推刀杆6的复位过程中，同样可以使用推动推块82的方式使压块81旋转至第四位置后，拉动推刀杆6复位。在此不予赘述。
本实施例的防窜动和防误击发结构只有通过向推块8施加外力驱动推块8纵向移动，使压块81旋转抬起，才能释放推刀杆6使其处于解锁状态；而在无外力施加给推块8的情况下，压块81远端的第二卡挚部与推刀杆6的第一卡挚部保持卡接，使推刀杆6处于锁定状态，从而阻止推刀杆6蹿动和误击发。
本发明还提供一种腔镜外科手术缝切装置。该缝切装置包括本体以及钉头组件。其中，钉头组件为图1至图6中所示的钉头组件。钉头组件的连接管5以及推刀杆6与本体相连接。该本体可以推动推刀杆6，使切刀7向钉仓架1的远端方向移动。
综合上述图1至图6所示的实施例，本领域技术人员理解，本发明所提供的钉头组件以及腔镜外科手术缝切装置，可以有效地防止钉仓组件安装至腔镜吻合器的器械平台之前的组装、包装和运输等环节中推刀杆蹿动，确保手术前器械平台能够与推刀杆正确安装，并能防误击发。
以上对本发明的具体实施例进行了描述。需要理解的是，本发明并不局限于上述特定实施方式，本领域技术人员可以在权利要求的范围内做出各种变形或修改，这并不影响本发明的实质内容。

Claims (15)

  1. 一种钉头组件，所述钉头组件包括：
    钉仓架，可拆卸地设有钉仓；
    钉砧，可相对于钉仓枢转闭合；
    击发块，可移动地设置于所述钉仓内；
    连接管，其远端连接所述钉仓架的近端；
    推刀杆，可移动地设置于所述连接管内，所述推刀杆的远端设有切刀，所述切刀在所述推刀杆的推动下推动所述击发块移动；以及
    保险机构，连接所述连接管，所述保险机构包括：
    压块，用于锁定所述推刀杆的近端，防止所述推刀杆在所述钉头组件使用前移动，所述压块可以相对所述连接管于第一位置与第二位置之间转动；和
    推块，用于推动所述压块由所述第一位置向所述第二位置转动，所述推块位于所述压块的一侧，且可相对所述连接管沿其纵向于第三位置与第四位置之间移动。
  2. 根据权利要求1所述的钉头组件，其特征在于，所述推刀杆的近端设有第一卡挚部，所述压块上设有第二卡挚部，当所述压块位于所述第一位置时，所述第二卡挚部与所述第一卡挚部卡接，所述推刀杆处于锁定状态无法移动；当所述压块转动至所述第二位置时，所述第二卡挚部与所述第一卡挚部脱离，所述推刀杆处于解锁状态，可纵向移动。
  3. 根据权利要求1所述的钉头组件，其特征在于，所述推块设置于所述连接管的外周上，当所述推块由所述第三位置移动至所述第四位置时，推动所述压块由所述第一位置转动至所述第二位置。
  4. 根据权利要求2所述的钉头组件，其特征在于，所述连接管的侧壁上设有沿其纵向延伸的第一限位槽，所述压块通过销轴连接于所述第一限位槽内，所述压块可绕所述销轴相对所述连接管转动。
  5. 根据权利要求4所述的钉头组件，其特征在于，所述压块的近端通过所述销轴与所述连接管连接，所述第二卡挚部设置于所述压块的远端。
  6. 根据权利要求4所述的钉头组件，其特征在于，所述连接管还设有沿其纵向延伸的第二限位槽，所述第二限位槽位于所述第一限位槽的一侧，且与所述第一限位槽相连通，所述推块设置于所述第二限位槽内，且可沿所述第二限位槽于所述第三位置与第四位置之间移动。
  7. 根据权利要求1至6中任一项所述的钉头组件，其特征在于，所述保险机构还包括：
    扭簧，连接所述压块和所述连接管，驱动所述压块由所述第二位置向所述第一位置转动；以及
    弹簧，连接所述推块和所述连接管，驱动所述推块由所述第四位置向所述第三位置方 向移动。
  8. 根据权利要求7所述的钉头组件，其特征在于，所述弹簧的近端连接于所述推块的远端，所述弹簧的远端连接所述连接管。
  9. 根据权利要求7所述的钉头组件，其特征在于，所述扭簧的一端连接所述压块，另一端连接所述连接管的内壁。
  10. 根据权利要求1至6中任一项所述的钉头组件，其特征在于，所述推块上的外表面设有第一引导部，所述压块的远端靠近所述推块一侧的侧壁上设有第二引导部，所述第二引导部置于所述推块的外表面上，当所述推块由所述第三位置移动至所述第四位置时，所述第一引导部推动第二引导部，使所述压块由所述第一位置旋转至所述第二位置。
  11. 根据权利要求10所述的钉头组件，其特征在于，所述第一引导部为第一斜面，所述第一斜面朝向所述推块的远端且自远端朝向近端上升式倾斜。
  12. 根据权利要求11所述的钉头组件，其特征在于，所述第二引导部为一凸设于所述压块的远端的侧壁上的凸块。
  13. 根据权利要求12所述的钉头组件，其特征在于，所述推刀杆的近端还设有第三引导部，当所述推刀杆向所述连接管的近端移动时，所述第三引导部引导所述压块由所述第一位置旋转至第二位置。
  14. 根据权利要求13所述的钉头组件，其特征在于，所述第三引导部为一第二斜面，所述第二斜面朝向所述推刀杆近端，且自远端朝向近端下降式倾斜。
  15. 一种腔镜外科手术缝切装置，包括：本体，其特征在于，还包括上述权利要求1至14中任一项所述的钉头组件，所述钉头组件的连接管以及推刀杆与所述本体相连接。
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JP3214069U (ja) 2017-12-21
BR112017014210B1 (pt) 2022-02-22
EP3241505A4 (en) 2017-12-13
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BR112017014210A2 (pt) 2018-04-10
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